diff --git a/audio/Android.mk b/audio/Android.mk
index 84e2e56..eb0732d 100644
--- a/audio/Android.mk
+++ b/audio/Android.mk
@@ -38,4 +38,15 @@
         system/media/audio_utils/include \
         system/media/audio_effects/include
 
+ifeq ($(TARGET_ENABLE_DSP_DEVICE), true)
+LOCAL_CFLAGS += -DENABLE_XAF_DSP_DEVICE
+LOCAL_C_INCLUDES += \
+        $(LOCAL_PATH)/../hifi/xaf/host-apf/include \
+        $(LOCAL_PATH)/../hifi/xaf/host-apf/include/os/android \
+        $(LOCAL_PATH)/../hifi/xaf/host-apf/include/sys/fio\
+        $(LOCAL_PATH)/../hifi/xaf/host-apf/include/audio \
+        $(LOCAL_PATH)/../hifi/xaf/host-apf/utest/include
+
+LOCAL_STATIC_LIBRARIES := libxtensa_proxy
+endif
 include $(BUILD_SHARED_LIBRARY)
diff --git a/audio/audio_hw.c b/audio/audio_hw.c
index 3fdf3f9..02ce250 100644
--- a/audio/audio_hw.c
+++ b/audio/audio_hw.c
@@ -42,6 +42,7 @@
 #include <audio_effects/effect_aec.h>
 
 #include <sys/ioctl.h>
+#include <linux/audio_hifi.h>
 
 #define CARD_OUT 0
 #define PORT_CODEC 0
diff --git a/hifi/Android.mk b/hifi/Android.mk
new file mode 100644
index 0000000..f3377fe
--- /dev/null
+++ b/hifi/Android.mk
@@ -0,0 +1,17 @@
+#
+# Copyright 2017 The Android Open Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+include $(all-subdir-makefiles)
diff --git a/hifi/debug-hifi/Android.mk b/hifi/debug-hifi/Android.mk
new file mode 100644
index 0000000..eefcaa5
--- /dev/null
+++ b/hifi/debug-hifi/Android.mk
@@ -0,0 +1,23 @@
+# Copyright (C) 2017 The Android Open Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License
+
+LOCAL_PATH := $(call my-dir)
+
+include $(CLEAR_VARS)
+LOCAL_MODULE := debug-hifi
+LOCAL_LICENSE_KINDS := SPDX-license-identifier-Apache-2.0
+LOCAL_LICENSE_CONDITIONS := notice
+LOCAL_SHARED_LIBRARIES := liblog libcutils
+LOCAL_SRC_FILES := debug-hifi.c
+include $(BUILD_EXECUTABLE)
diff --git a/hifi/debug-hifi/debug-hifi.c b/hifi/debug-hifi/debug-hifi.c
new file mode 100644
index 0000000..75bda4c
--- /dev/null
+++ b/hifi/debug-hifi/debug-hifi.c
@@ -0,0 +1,70 @@
+/*
+ * Copyright (C) 2017 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "debug-hifi"
+#include <errno.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <poll.h>
+#include <pthread.h>
+#include <sys/ioctl.h>
+#include <sys/prctl.h>
+#include <stdio.h>
+#include <cutils/log.h>
+#include <cutils/uevent.h>
+#include <stdlib.h>
+#include <linux/audio_hifi.h>
+
+int main(int argc, char *argv[])
+{
+    char *buffer;
+    int hifi_dsp_fd;
+    int ret = -1;
+    int i = 0;
+    unsigned int memsize = DRV_DSP_UART_TO_MEM_SIZE;
+    unsigned int clear = 0;
+    struct misc_io_dump_buf_param dump_buf;
+
+    ALOGI("Enter hifi-dsp Audio Framework - sample application\n");
+    if (argc > 1)
+        memsize = strtoul(argv[1], NULL, 0);
+    if (argc > 2)
+        clear = 1;
+    hifi_dsp_fd = open(HIFI_DSP_MISC_DRIVER, O_RDWR, 0);
+    if (hifi_dsp_fd < 0) {
+        ALOGE("Error %d opening hifi dsp device", errno);
+        return ret;
+    }
+    buffer = malloc(memsize);
+    if (!buffer) {
+        ALOGE("Error allocating buffer");
+        goto out0;
+    }
+    dump_buf.user_buf = (uint64_t)buffer;
+    dump_buf.buf_size = memsize;
+    dump_buf.clear = clear;
+    ret = ioctl(hifi_dsp_fd, HIFI_MISC_IOCTL_DISPLAY_MSG, &dump_buf);
+    if (ret < 0) { /* This IOCTL returns buffer size */
+        ALOGE("Error %d accessing message buffer", errno);
+    } else {
+        printf("%s\n", ret > 0 ? buffer : "Buffer is empty");
+    }
+    free(buffer);
+out0:
+    close(hifi_dsp_fd);
+    ALOGI("Exit hifi-dsp Audio Framework - sample application\n");
+    return ret;
+}
diff --git a/hifi/firmware/hifi-hikey960.img b/hifi/firmware/hifi-hikey960.img
new file mode 100644
index 0000000..b8c2516
--- /dev/null
+++ b/hifi/firmware/hifi-hikey960.img
Binary files differ
diff --git a/hifi/xaf/Android.mk b/hifi/xaf/Android.mk
new file mode 100644
index 0000000..f3377fe
--- /dev/null
+++ b/hifi/xaf/Android.mk
@@ -0,0 +1,17 @@
+#
+# Copyright 2017 The Android Open Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+include $(all-subdir-makefiles)
diff --git a/hifi/xaf/README b/hifi/xaf/README
new file mode 100755
index 0000000..9c83576
--- /dev/null
+++ b/hifi/xaf/README
@@ -0,0 +1,39 @@
+
+.
+|--- README
+|   - This file 
+|   
+|--- release.txt
+|   - Release notes
+|   
+|--- config
+|   |   
+|   |--- hifi3_hikey960_linux.tgz
+|   |   - HiKey960 HiFi3 LX6 config with SW upgraded to RG.5 tools for Linux
+|   |   
+|   |-- hifi3_hikey960_win32.tgz
+|       - HiKey960 HiFi3 LX6 config with SW upgraded to RG.5 tools for Windows 
+|   
+|--- docs
+|   |   
+|   |--- HiFi-AF-Hosted-ProgrammersGuide.pdf
+|   |   - Xtensa Audio Framework (Hosted) Programmers Guide, v0.6
+|   |   
+|   |--- HiFi-Audio-Codec-API-Definition.pdf
+|   |   - HiFi Audio Codec API Definition, v1.0
+|   |   
+|   |--- HiFi-Speech-Codec-API-Definition.pdf
+|   |   - HiFi Speech Codec API Definition, v1.0
+|   |   
+|   |-- HiKey960-HiFi3-Android-SDK-Guide.pdf
+|       - HiKey960-HiFi3-Android-SDK Guide, v0.7
+|   
+|--- xaf-dsp-v0.7_Alpha.tgz
+|   - XAF DSP Firmware Source Code(hifi-dpf)
+|   
+|-- xaf-host-v0.7_Alpha.tgz
+|   - XAF Host application Source Code(host-apf)
+|
+|-- Get xtensa tools and guide to install xtensa tools,HiKey960 HiFi3 LX6 config
+|   -https://www.tensilicatools.com/platform/huawei-kirin-960/
+|
diff --git a/hifi/xaf/config/hifi3_hikey960_linux.tgz b/hifi/xaf/config/hifi3_hikey960_linux.tgz
new file mode 100755
index 0000000..8115219
--- /dev/null
+++ b/hifi/xaf/config/hifi3_hikey960_linux.tgz
Binary files differ
diff --git a/hifi/xaf/config/hifi3_hikey960_win32.tgz b/hifi/xaf/config/hifi3_hikey960_win32.tgz
new file mode 100755
index 0000000..3287175
--- /dev/null
+++ b/hifi/xaf/config/hifi3_hikey960_win32.tgz
Binary files differ
diff --git a/hifi/xaf/docs/HiFi-AF-Hosted-ProgrammersGuide.pdf b/hifi/xaf/docs/HiFi-AF-Hosted-ProgrammersGuide.pdf
new file mode 100755
index 0000000..3499a87
--- /dev/null
+++ b/hifi/xaf/docs/HiFi-AF-Hosted-ProgrammersGuide.pdf
Binary files differ
diff --git a/hifi/xaf/docs/HiFi-Audio-Codec-API-Definition.pdf b/hifi/xaf/docs/HiFi-Audio-Codec-API-Definition.pdf
new file mode 100755
index 0000000..179d13b
--- /dev/null
+++ b/hifi/xaf/docs/HiFi-Audio-Codec-API-Definition.pdf
Binary files differ
diff --git a/hifi/xaf/docs/HiFi-Speech-Codec-API-Definition.pdf b/hifi/xaf/docs/HiFi-Speech-Codec-API-Definition.pdf
new file mode 100755
index 0000000..2b6a68a
--- /dev/null
+++ b/hifi/xaf/docs/HiFi-Speech-Codec-API-Definition.pdf
Binary files differ
diff --git a/hifi/xaf/docs/HiKey960-HiFi3-Android-SDK-Guide.pdf b/hifi/xaf/docs/HiKey960-HiFi3-Android-SDK-Guide.pdf
new file mode 100755
index 0000000..ea3c07a
--- /dev/null
+++ b/hifi/xaf/docs/HiKey960-HiFi3-Android-SDK-Guide.pdf
Binary files differ
diff --git a/hifi/xaf/docs/Hosted_XAF_Arch_v0.7.pdf b/hifi/xaf/docs/Hosted_XAF_Arch_v0.7.pdf
new file mode 100755
index 0000000..f5b372f
--- /dev/null
+++ b/hifi/xaf/docs/Hosted_XAF_Arch_v0.7.pdf
Binary files differ
diff --git a/hifi/xaf/hifi-dpf/app/xa-factory.c b/hifi/xaf/hifi-dpf/app/xa-factory.c
new file mode 100644
index 0000000..b9e7d19
--- /dev/null
+++ b/hifi/xaf/hifi-dpf/app/xa-factory.c
@@ -0,0 +1,163 @@
+/*******************************************************************************
+* Copyright (C) 2018 Cadence Design Systems, Inc.
+* 
+* Permission is hereby granted, free of charge, to any person obtaining
+* a copy of this software and associated documentation files (the
+* "Software"), to use this Software with Cadence processor cores only and 
+* not with any other processors and platforms, subject to
+* the following conditions:
+* 
+* The above copyright notice and this permission notice shall be included
+* in all copies or substantial portions of the Software.
+* 
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+******************************************************************************/
+
+/*******************************************************************************
+ * xa-factory.c
+ *
+ * DSP processing framework core - component factory
+ *
+ ******************************************************************************/
+
+#define MODULE_TAG                      FACTORY
+
+/*******************************************************************************
+ * Includes
+ ******************************************************************************/
+
+#include "xf.h"
+#include "audio/xa_type_def.h"
+
+/*******************************************************************************
+ * Tracing tags
+ ******************************************************************************/
+
+/* ...general initialization sequence */
+TRACE_TAG(INIT, 1);
+
+/*******************************************************************************
+ * Local types definitions
+ ******************************************************************************/
+
+/* ...component descriptor */
+typedef struct xf_component_id
+{
+    /* ...class id (string identifier) */
+    const char         *id;
+    
+    /* ...class constructor */
+    xf_component_t *  (*factory)(u32 core, xa_codec_func_t process);
+
+    /* ...component API function */
+    xa_codec_func_t    *process;
+
+}   xf_component_id_t;
+
+/*******************************************************************************
+ * External functions
+ ******************************************************************************/
+
+/* ...components API functions */
+extern XA_ERRORCODE xa_pcm_codec(xa_codec_handle_t, WORD32, WORD32, pVOID);
+extern XA_ERRORCODE xa_mp3_decoder(xa_codec_handle_t, WORD32, WORD32, pVOID);
+extern XA_ERRORCODE xa_aac_decoder(xa_codec_handle_t, WORD32, WORD32, pVOID);
+extern XA_ERRORCODE xa_aac_encoder(xa_codec_handle_t, WORD32, WORD32, pVOID);
+extern XA_ERRORCODE xa_vorbis_decoder(xa_codec_handle_t, WORD32, WORD32, pVOID);
+extern XA_ERRORCODE xa_ac3_decoder(xa_codec_handle_t, WORD32, WORD32, pVOID);
+extern XA_ERRORCODE xa_ddplus71_decoder(xa_codec_handle_t, WORD32, WORD32, pVOID);
+extern XA_ERRORCODE xa_mixer(xa_codec_handle_t, WORD32, WORD32, pVOID);
+extern XA_ERRORCODE xa_renderer(xa_codec_handle_t, WORD32, WORD32, pVOID);
+extern XA_ERRORCODE xa_capturer(xa_codec_handle_t, WORD32, WORD32, pVOID);
+extern XA_ERRORCODE xa_src_pp_fx(xa_codec_handle_t, WORD32, WORD32, pVOID);
+extern XA_ERRORCODE xa_dts_hd_decoder(xa_codec_handle_t, WORD32, WORD32, pVOID);
+extern XA_ERRORCODE xa_dap_fx(xa_codec_handle_t, WORD32, WORD32, pVOID);
+
+/* ...component class factories */
+extern xf_component_t * xa_audio_codec_factory(u32 core, xa_codec_func_t process);
+extern xf_component_t * xa_audio_fx_factory(u32 core, xa_codec_func_t process);
+extern xf_component_t * xa_mixer_factory(u32 core, xa_codec_func_t process);
+extern xf_component_t * xa_renderer_factory(u32 core,xa_codec_func_t process);
+
+/*******************************************************************************
+ * Local constants definitions
+ ******************************************************************************/
+    
+/* ...component class id */
+static const xf_component_id_t xf_component_id[] = 
+{
+#if XA_PCM
+    { "audio-decoder/pcm",      xa_audio_codec_factory,     xa_pcm_codec },
+#endif
+#if XA_MP3_DECODER
+    { "audio-decoder/mp3",      xa_audio_codec_factory,     xa_mp3_decoder },
+#endif
+#if XA_AAC_DECODER
+    { "audio-decoder/aac",      xa_audio_codec_factory,     xa_aac_decoder },
+#endif
+#if XA_AC3_DECODER
+    { "audio-decoder/ac3",      xa_audio_codec_factory,     xa_ac3_decoder },
+#endif
+#if XA_DDP71_DECODER
+    { "audio-decoder/ddplus71", xa_audio_codec_factory,     xa_ddplus71_decoder },
+#endif
+#if XA_DTS_HD_DECODER
+    { "audio-decoder/dts-hd",   xa_audio_codec_factory,     xa_dts_hd_decoder },
+#endif
+#if XA_VORBIS_DECODER
+    { "audio-decoder/vorbis",   xa_audio_codec_factory,     xa_vorbis_decoder },
+#endif
+#if XA_AAC_ENCODER
+    { "audio-encoder/aac",      xa_audio_codec_factory,     xa_aac_encoder },
+#endif
+#if XA_SRC_PP_FX
+    { "audio-fx/src-pp",        xa_audio_codec_factory,     xa_src_pp_fx },
+#endif
+#if XA_DAP_FX
+    { "audio-fx/dap",           xa_audio_codec_factory,     xa_dap_fx },
+#endif
+#if XA_MIXER
+    { "mixer",                  xa_mixer_factory,           xa_mixer },
+#endif
+#if XA_RENDERER
+    { "renderer",               xa_renderer_factory,        xa_renderer },
+#endif
+#if XA_CAPTURER
+    { "capturer",               xa_capturer_factory,        xa_capturer },
+#endif
+};
+
+/* ...number of items in the map */
+#define XF_COMPONENT_ID_MAX     (sizeof(xf_component_id) / sizeof(xf_component_id[0]))
+   
+/*******************************************************************************
+ * Enry points
+ ******************************************************************************/
+
+xf_component_t * xf_component_factory(u32 core, xf_id_t id, u32 length)
+{
+    u32     i;
+
+    /* ...find component-id in static map */
+    for (i = 0; i < XF_COMPONENT_ID_MAX; i++)
+    {
+        /* ...symbolic search - not too good; would prefer GUIDs in some form */
+        if (!strncmp(id, xf_component_id[i].id, length))
+        {
+            /* ...pass control to specific class factory */
+            return xf_component_id[i].factory(core, xf_component_id[i].process);
+        }
+    }
+
+    /* ...component string id is not recognized */
+    TRACE(ERROR, _b("Unknown component type: %s"), id);
+
+    return NULL;
+}
diff --git a/hifi/xaf/hifi-dpf/audio/xa-class-audio-codec.c b/hifi/xaf/hifi-dpf/audio/xa-class-audio-codec.c
new file mode 100644
index 0000000..ce233f0
--- /dev/null
+++ b/hifi/xaf/hifi-dpf/audio/xa-class-audio-codec.c
@@ -0,0 +1,785 @@
+/*******************************************************************************
+* Copyright (C) 2018 Cadence Design Systems, Inc.
+* 
+* Permission is hereby granted, free of charge, to any person obtaining
+* a copy of this software and associated documentation files (the
+* "Software"), to use this Software with Cadence processor cores only and 
+* not with any other processors and platforms, subject to
+* the following conditions:
+* 
+* The above copyright notice and this permission notice shall be included
+* in all copies or substantial portions of the Software.
+* 
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+******************************************************************************/
+
+/*******************************************************************************
+ * xa-class-audio-codec.c
+ *
+ * Generic audio codec task implementation
+ *
+ ******************************************************************************/
+
+#define MODULE_TAG                      CODEC
+
+/*******************************************************************************
+ * Includes
+ ******************************************************************************/
+
+#include "xf.h"
+#include "xa-class-base.h"
+#include "audio/xa-audio-decoder-api.h"
+
+/*******************************************************************************
+ * Tracing configuration
+ ******************************************************************************/
+
+TRACE_TAG(INIT, 1);
+TRACE_TAG(WARNING, 1);
+TRACE_TAG(INFO, 1);
+TRACE_TAG(INPUT, 1);
+TRACE_TAG(OUTPUT, 1);
+TRACE_TAG(DECODE, 1);
+
+/*******************************************************************************
+ * Internal functions definitions
+ ******************************************************************************/
+
+typedef struct XAAudioCodec
+{
+    /***************************************************************************
+     * Control data
+     **************************************************************************/
+
+    /* ...generic audio codec data */
+    XACodecBase             base;
+
+    /* ...input port data */
+    xf_input_port_t         input;
+
+    /* ...output port data */
+    xf_output_port_t        output;
+
+    /* ...input port index */
+    WORD32                  in_idx;
+
+    /* ...output port index */
+    WORD32                  out_idx;
+
+    /***************************************************************************
+     * Run-time configuration parameters
+     **************************************************************************/
+
+    /* ...sample size in bytes */
+    u32                     sample_size;
+
+    /* ...audio sample duration */
+    u32                     factor;
+
+    /* ...total number of produced audio frames since last reset */
+    u32                     produced;
+
+}   XAAudioCodec;
+
+/*******************************************************************************
+ * Auxiliary codec execution flags
+ ******************************************************************************/
+
+/* ...input port setup condition */
+#define XA_CODEC_FLAG_INPUT_SETUP       __XA_BASE_FLAG(1 << 0)
+
+/* ...output port setup condition */
+#define XA_CODEC_FLAG_OUTPUT_SETUP      __XA_BASE_FLAG(1 << 1)
+
+/*******************************************************************************
+ * Data processing scheduling
+ ******************************************************************************/
+
+/* ...prepare codec for steady operation (tbd - don't absolutely like it) */
+static inline XA_ERRORCODE xa_codec_prepare_runtime(XAAudioCodec *codec)
+{
+    XACodecBase    *base = (XACodecBase *)codec;
+    xf_message_t   *m = xf_msg_queue_head(&codec->output.queue);
+    xf_start_msg_t *msg = m->buffer;
+    u32             frame_size;
+    u32             factor;
+
+    /* ...fill-in buffer parameters */
+    XA_API(base, XA_API_CMD_GET_CONFIG_PARAM, XA_CODEC_CONFIG_PARAM_SAMPLE_RATE, &msg->sample_rate);
+    XA_API(base, XA_API_CMD_GET_CONFIG_PARAM, XA_CODEC_CONFIG_PARAM_CHANNELS, &msg->channels);
+    XA_API(base, XA_API_CMD_GET_CONFIG_PARAM, XA_CODEC_CONFIG_PARAM_PCM_WIDTH, &msg->pcm_width);
+    XA_API(base, XA_API_CMD_GET_MEM_INFO_SIZE, codec->in_idx, &msg->input_length);
+    XA_API(base, XA_API_CMD_GET_MEM_INFO_SIZE, codec->out_idx, &msg->output_length);
+
+    TRACE(INIT, _b("codec[%p]::runtime init: f=%u, c=%u, w=%u, i=%u, o=%u"), codec, msg->sample_rate, msg->channels, msg->pcm_width, msg->input_length, msg->output_length);
+
+    /* ...reallocate input port buffer as needed - tbd */
+    BUG(msg->input_length > codec->input.length, _x("Input buffer reallocation required: %u to %u"), codec->input.length, msg->input_length);
+
+    /* ...save sample size in bytes */
+    codec->sample_size = msg->channels * (msg->pcm_width == 16 ? 2 : 4);
+
+    /* ...calculate frame duration; get number of samples in the frame (don't like division here - tbd) */
+    frame_size = msg->output_length / codec->sample_size;
+
+    /* ...it must be a multiple */
+    XF_CHK_ERR(frame_size * codec->sample_size == msg->output_length, XA_API_FATAL_INVALID_CMD_TYPE);
+
+    /* ...retrieve upsampling factor for given sample rate */
+    XF_CHK_ERR(factor = xf_timebase_factor(msg->sample_rate), XA_API_FATAL_INVALID_CMD_TYPE);
+
+    /* ...set frame duration factor (converts number of bytes into timebase units) */
+    codec->factor = factor / codec->sample_size;
+
+    TRACE(INIT, _b("ts-factor: %u (%u)"), codec->factor, factor);
+
+    BUG(codec->factor * codec->sample_size != factor, _x("Freq mismatch: %u vs %u"), codec->factor * codec->sample_size, factor);
+
+    /* ...pass response to caller (push out of output port) */
+    xf_output_port_produce(&codec->output, sizeof(*msg));
+
+    /* ...codec runtime initialization is completed */
+    TRACE(INIT, _b("codec[%p] runtime initialized: i=%u, o=%u"), codec, msg->input_length, msg->output_length);
+
+    return XA_NO_ERROR;
+}
+
+/*******************************************************************************
+ * Commands processing
+ ******************************************************************************/
+
+/* ...EMPTY-THIS-BUFFER command processing */
+static XA_ERRORCODE xa_codec_empty_this_buffer(XACodecBase *base, xf_message_t *m)
+{
+    XAAudioCodec   *codec = (XAAudioCodec *) base;
+
+    /* ...make sure the port is valid */
+    XF_CHK_ERR(XF_MSG_DST_PORT(m->id) == 0, XA_API_FATAL_INVALID_CMD);
+
+    /* ...command is allowed only in post-init state */
+    XF_CHK_ERR(base->state & XA_BASE_FLAG_POSTINIT, XA_API_FATAL_INVALID_CMD);
+
+    /* ...put message into input queue */
+    if (xf_input_port_put(&codec->input, m))
+    {
+        /* ...restart stream if it is in completed state */
+        if (base->state & XA_BASE_FLAG_COMPLETED)
+        {
+            /* ...reset execution stage */
+            base->state = XA_BASE_FLAG_POSTINIT | XA_BASE_FLAG_EXECUTION;
+
+            /* ...reset execution runtime */
+            XA_API(base, XA_API_CMD_EXECUTE, XA_CMD_TYPE_DO_RUNTIME_INIT, NULL);
+
+            /* ...reset produced samples counter */
+            codec->produced = 0;
+        }
+
+        /* ...codec must be in one of these states */
+        XF_CHK_ERR(base->state & (XA_BASE_FLAG_RUNTIME_INIT | XA_BASE_FLAG_EXECUTION), XA_API_FATAL_INVALID_CMD);
+        
+        /* ...schedule data processing if output is ready */
+        if (xf_output_port_ready(&codec->output))
+        {
+            xa_base_schedule(base, 0);
+        }
+    }
+
+    TRACE(INPUT, _b("Received buffer [%p]:%u"), m->buffer, m->length);
+
+    return XA_NO_ERROR;
+}
+
+/* ...FILL-THIS-BUFFER command processing */
+static XA_ERRORCODE xa_codec_fill_this_buffer(XACodecBase *base, xf_message_t *m)
+{
+    XAAudioCodec   *codec = (XAAudioCodec *) base;
+
+    /* ...make sure the port is valid */
+    XF_CHK_ERR(XF_MSG_DST_PORT(m->id) == 1, XA_API_FATAL_INVALID_CMD);
+
+    /* ...command is allowed only in postinit state */
+    XF_CHK_ERR(base->state & XA_BASE_FLAG_POSTINIT, XA_API_FATAL_INVALID_CMD);
+
+    /* ...special handling of zero-length buffer */
+    if (base->state & XA_BASE_FLAG_RUNTIME_INIT)
+    {
+        /* ...message must be zero-length */
+        BUG(m->length != 0, _x("Invalid message length: %u"), m->length);
+    }
+    else if (m == xf_output_port_control_msg(&codec->output))
+    {
+        /* ...end-of-stream processing indication received; check the state */
+        BUG((base->state & XA_BASE_FLAG_COMPLETED) == 0, _x("invalid state: %x"), base->state);
+
+        /* ... mark flushing sequence is done */
+        xf_output_port_flush_done(&codec->output);
+
+        /* ...complete pending zero-length input buffer */
+        xf_input_port_purge(&codec->input);
+
+        TRACE(INFO, _b("codec[%p] playback completed"), codec);
+
+        /* ...playback is over */
+        return XA_NO_ERROR;
+    }
+    else if ((base->state & XA_BASE_FLAG_COMPLETED) && !xf_output_port_routed(&codec->output))
+    {
+        /* ...return message arrived from application immediately */
+        xf_response_ok(m);
+
+        return XA_NO_ERROR;
+    }
+    else
+    {
+        TRACE(OUTPUT, _b("Received output buffer [%p]:%u"), m->buffer, m->length);
+
+        /* ...adjust message length (may be shorter than original) */
+        m->length = codec->output.length;
+    }
+
+    /* ...place message into output port */
+    if (xf_output_port_put(&codec->output, m) && xf_input_port_ready(&codec->input))
+    {
+        /* ...schedule data processing instantly */
+        if (base->state & (XA_BASE_FLAG_RUNTIME_INIT | XA_BASE_FLAG_EXECUTION))
+        {
+            xa_base_schedule(base, 0);
+        }
+    }
+
+    return XA_NO_ERROR;
+}
+
+/* ...output port routing */
+static XA_ERRORCODE xa_codec_port_route(XACodecBase *base, xf_message_t *m)
+{
+    XAAudioCodec           *codec = (XAAudioCodec *) base;
+    xf_route_port_msg_t    *cmd = m->buffer;
+    xf_output_port_t       *port = &codec->output;
+    u32                     src = XF_MSG_DST(m->id);
+    u32                     dst = cmd->dst;
+    
+    /* ...command is allowed only in "postinit" state */
+    XF_CHK_ERR(base->state & XA_BASE_FLAG_POSTINIT, XA_API_FATAL_INVALID_CMD);
+
+    /* ...make sure output port is addressed */
+    XF_CHK_ERR(XF_MSG_DST_PORT(m->id) == 1, XA_API_FATAL_INVALID_CMD_TYPE);
+
+    /* ...make sure port is not routed yet */
+    XF_CHK_ERR(!xf_output_port_routed(port), XA_API_FATAL_INVALID_CMD_TYPE);
+
+    /* ...route output port - allocate queue */
+    XF_CHK_ERR(xf_output_port_route(port, __XF_MSG_ID(dst, src), cmd->alloc_number, cmd->alloc_size, cmd->alloc_align) == 0, XA_API_FATAL_MEM_ALLOC);
+
+    /* ...schedule processing instantly */
+    xa_base_schedule(base, 0);
+    
+    /* ...pass success result to caller */
+    xf_response_ok(m);
+    
+    return XA_NO_ERROR;
+}
+
+/* ...port unroute command */
+static XA_ERRORCODE xa_codec_port_unroute(XACodecBase *base, xf_message_t *m)
+{
+    XAAudioCodec           *codec = (XAAudioCodec *) base;
+    
+    /* ...command is allowed only in "postinit" state */
+    XF_CHK_ERR(base->state & XA_BASE_FLAG_POSTINIT, XA_API_FATAL_INVALID_CMD);
+
+    /* ...make sure output port is addressed */
+    XF_CHK_ERR(XF_MSG_DST_PORT(m->id) == 1, XA_API_FATAL_INVALID_CMD_TYPE);
+
+    /* ...cancel any pending processing */
+    xa_base_cancel(base);
+
+    /* ...clear output-port-setup condition */
+    base->state &= ~XA_CODEC_FLAG_OUTPUT_SETUP;
+
+    /* ...pass flush command down the graph */
+    if (xf_output_port_flush(&codec->output, XF_FLUSH))
+    {
+        TRACE(INFO, _b("port is idle; instantly unroute"));
+
+        /* ...flushing sequence is not needed; command may be satisfied instantly */
+        xf_output_port_unroute(&codec->output);
+
+        /* ...pass response to the proxy */
+        xf_response_ok(m);
+    }
+    else
+    {
+        TRACE(INFO, _b("port is busy; propagate unroute command"));
+
+        /* ...flushing sequence is started; save flow-control message */
+        xf_output_port_unroute_start(&codec->output, m);
+    }
+
+    return XA_NO_ERROR;
+}
+
+/* ...FLUSH command processing */
+static XA_ERRORCODE xa_codec_flush(XACodecBase *base, xf_message_t *m)
+{
+    XAAudioCodec   *codec = (XAAudioCodec *) base;
+
+    /* ...command is allowed only in "postinit" state */
+    XF_CHK_ERR(base->state & XA_BASE_FLAG_POSTINIT, XA_API_FATAL_INVALID_CMD);
+
+    /* ...ensure input parameter length is zero */
+    XF_CHK_ERR(m->length == 0, XA_API_FATAL_INVALID_CMD_TYPE);
+
+    TRACE(1, _b("flush command received"));
+    
+    /* ...flush command must be addressed to input port */
+    if (XF_MSG_DST_PORT(m->id) == 0)
+    {
+        /* ...cancel data processing message if needed */
+        xa_base_cancel(base);
+
+        /* ...input port flushing; purge content of input buffer */
+        xf_input_port_purge(&codec->input);
+
+        /* ...clear input-ready condition */
+        base->state &= ~XA_CODEC_FLAG_INPUT_SETUP;
+
+        /* ...reset execution runtime */
+        XA_API(base, XA_API_CMD_EXECUTE, XA_CMD_TYPE_DO_RUNTIME_INIT, NULL);
+
+        /* ...reset produced samples counter */
+        codec->produced = 0;
+
+        /* ...propagate flushing command to output port */
+        if (xf_output_port_flush(&codec->output, XF_FLUSH))
+        {
+            /* ...flushing sequence is not needed; satisfy command instantly */
+            xf_response(m);
+        }
+        else
+        {
+            /* ...flushing sequence is started; save flow-control message at input port */
+            xf_input_port_control_save(&codec->input, m);
+        }
+    }
+    else if (xf_output_port_unrouting(&codec->output))
+    {
+        /* ...flushing during port unrouting; complete unroute sequence */
+        xf_output_port_unroute_done(&codec->output);
+
+        TRACE(INFO, _b("port is unrouted"));
+    }
+    else
+    {
+        /* ...output port flush command/response; check if the port is routed */
+        if (!xf_output_port_routed(&codec->output))
+        {
+            /* ...complete all queued messages */
+            xf_output_port_flush(&codec->output, XF_FLUSH);
+
+            /* ...and pass response to flushing command */
+            xf_response(m);
+        }
+        else
+        {            
+            /* ...response to flushing command received */
+            BUG(m != xf_output_port_control_msg(&codec->output), _x("invalid message: %p"), m);
+
+            /* ...mark flushing sequence is completed */
+            xf_output_port_flush_done(&codec->output);
+
+            /* ...complete original flow-control command */
+            xf_input_port_purge_done(&codec->input);
+        }
+
+        /* ...clear output-setup condition */
+        base->state &= ~XA_CODEC_FLAG_OUTPUT_SETUP;
+    }
+
+    return XA_NO_ERROR;
+}
+
+/*******************************************************************************
+ * Generic codec API
+ ******************************************************************************/
+
+/* ...memory buffer handling */
+static XA_ERRORCODE xa_codec_memtab(XACodecBase *base, WORD32 idx, WORD32 type, WORD32 size, WORD32 align, u32 core)
+{
+    XAAudioCodec   *codec = (XAAudioCodec *) base;
+
+    if (type == XA_MEMTYPE_INPUT)
+    {
+        /* ...input port specification; allocate internal buffer */
+        XF_CHK_ERR(xf_input_port_init(&codec->input, size, align, core) == 0, XA_API_FATAL_MEM_ALLOC);
+
+        /* ...save input port index */
+        codec->in_idx = idx;
+
+        /* ...set input buffer pointer as needed */
+        (size ? XA_API(base, XA_API_CMD_SET_MEM_PTR, idx, codec->input.buffer) : 0);
+
+        (size ? TRACE(1, _x("set input ptr: %p"), codec->input.buffer) : 0);
+    }
+    else
+    {
+        /* ...output buffer specification */
+        XF_CHK_ERR(type == XA_MEMTYPE_OUTPUT, XA_API_FATAL_INVALID_CMD_TYPE);
+
+        /* ...initialize output port queue (no allocation here yet) */
+        XF_CHK_ERR(xf_output_port_init(&codec->output, size) == 0, XA_API_FATAL_MEM_ALLOC);
+
+        /* ...save output port index */
+        codec->out_idx = idx;
+    }
+
+    return XA_NO_ERROR;
+}
+
+/* ...prepare input/output buffers */
+static XA_ERRORCODE xa_codec_preprocess(XACodecBase *base)
+{
+    XAAudioCodec   *codec = (XAAudioCodec *) base;
+
+    /* ...prepare output buffer if needed */
+    if (!(base->state & XA_CODEC_FLAG_OUTPUT_SETUP))
+    {
+        void   *output;
+
+        /* ...get output buffer from port, if possible */
+        if (base->state & XA_BASE_FLAG_RUNTIME_INIT)
+        {
+            /* ...run-time is not initialized yet; use scratch buffer */
+            output = base->scratch;
+        }
+        else if ((output = xf_output_port_data(&codec->output)) == NULL)
+        {
+            /* ...no output buffer available */
+            return XA_CODEC_EXEC_NO_DATA;
+        }
+
+        /* ...set the output buffer pointer */
+        XA_API(base, XA_API_CMD_SET_MEM_PTR, codec->out_idx, output);
+
+        TRACE(1, _x("set output ptr: %p"), output);
+        
+        /* ...mark output port is setup */
+        base->state ^= XA_CODEC_FLAG_OUTPUT_SETUP;
+    }
+
+    /* ...prepare input data if needed */
+    if (!(base->state & XA_CODEC_FLAG_INPUT_SETUP))
+    {
+        void   *input;
+        u32     filled;
+
+        /* ...fill input buffer */
+        if (xf_input_port_bypass(&codec->input))
+        {
+            /* ...use input buffer directly; check if there is data available */
+            if ((input = xf_input_port_data(&codec->input)) != NULL)
+            {
+                /* ...set input data buffer pointer */
+                XA_API(base, XA_API_CMD_SET_MEM_PTR, codec->in_idx, input);
+
+                /* ...retrieve number of input bytes */
+                filled = xf_input_port_length(&codec->input);
+            }
+            else if (!xf_input_port_done(&codec->input))
+            {
+                /* ...return non-fatal indication to prevent further processing */
+                return XA_CODEC_EXEC_NO_DATA;
+            }
+            else
+            {
+                /* ...mark we have no data in current buffer */
+                filled = 0;
+            }
+        }
+        else
+        {
+            /* ...port is in non-bypass mode; try to fill internal buffer */
+            if (xf_input_port_done(&codec->input) || xf_input_port_fill(&codec->input))
+            {
+                /* ...retrieve number of bytes in input buffer (not really - tbd) */
+                filled = xf_input_port_level(&codec->input);
+            }
+            else
+            {
+                /* ...return non-fatal indication to prevent further processing */
+                return XA_CODEC_EXEC_NO_DATA;
+            }
+        }
+
+        /* ...check if input stream is over */
+        if (xf_input_port_done(&codec->input))
+        {
+            /* ...pass input-over command to the codec to indicate the final buffer */
+            XA_API(base, XA_API_CMD_INPUT_OVER, codec->in_idx, NULL);
+
+            TRACE(INFO, _b("codec[%p]: signal input-over (filled: %u)"), codec, filled);
+        }
+
+        TRACE(INPUT, _b("input-buffer fill-level: %u bytes"), filled);
+
+        /* ...specify number of bytes available in the input buffer */
+        XA_API(base, XA_API_CMD_SET_INPUT_BYTES, codec->in_idx, &filled);
+
+        /* ...mark input port is setup */
+        base->state ^= XA_CODEC_FLAG_INPUT_SETUP;
+    }
+
+    return XA_NO_ERROR;
+}
+
+/* ...post-processing operation; input/output ports maintenance */
+static XA_ERRORCODE xa_codec_postprocess(XACodecBase *base, int done)
+{
+    XAAudioCodec   *codec = (XAAudioCodec *) base;
+    WORD32          consumed = 0;
+    WORD32          produced = 0;
+
+    /* ...get number of consumed / produced bytes */
+    XA_API(base, XA_API_CMD_GET_CURIDX_INPUT_BUF, codec->in_idx, &consumed);
+
+    /* ...get number of produced bytes only if runtime is initialized (sample size is known) */
+    (codec->sample_size ? XA_API(base, XA_API_CMD_GET_OUTPUT_BYTES, codec->out_idx, &produced) : 0);
+
+    TRACE(DECODE, _b("codec[%p]::postprocess(c=%u, p=%u, d=%u)"), codec, consumed, produced, done);
+
+    /* ...input buffer maintenance; check if we consumed anything */
+    if (consumed)
+    {
+        /* ...consume specified number of bytes from input port */
+        xf_input_port_consume(&codec->input, consumed);
+
+        /* ...clear input-setup flag */
+        base->state ^= XA_CODEC_FLAG_INPUT_SETUP;
+    }
+
+    /* ...output buffer maintenance; check if we have produced anything */
+    if (produced)
+    {
+        /* ...increment total number of produced samples (really don't like division here - tbd) */
+        codec->produced += produced / codec->sample_size;
+
+        /* ...immediately complete output buffer (don't wait until it gets filled) */
+        xf_output_port_produce(&codec->output, produced);
+
+        /* ...clear output port setup flag */
+        base->state ^= XA_CODEC_FLAG_OUTPUT_SETUP;
+    }
+
+    /* ...process execution stage transition */
+    if (done)
+    {
+        if (base->state & XA_BASE_FLAG_RUNTIME_INIT)
+        {
+            /* ...stream is completed while codec is in runtime initialization stage */
+            BUG(1, _x("breakpoint"));
+        }
+        else if (base->state & XA_BASE_FLAG_EXECUTION)
+        {
+            /* ...runtime initialization done */
+            XA_CHK(xa_codec_prepare_runtime(codec));
+
+            /* ...clear output port setup flag as we were using scratch buffer;
+             * technically, no need to repeat setup of input buffer, but some codecs require
+             * it as well
+             */
+            base->state &= ~(XA_CODEC_FLAG_INPUT_SETUP | XA_CODEC_FLAG_OUTPUT_SETUP);
+        }
+        else
+        {
+            /* ...output stream is over; propagate condition to sink port */
+            if (xf_output_port_flush(&codec->output, XF_FILL_THIS_BUFFER))
+            {
+                /* ...flushing sequence is not needed; complete pending zero-length input */
+                xf_input_port_purge(&codec->input);
+                
+                /* ...no propagation to output port */
+                TRACE(INFO, _b("codec[%p] playback completed"), codec);
+            }
+            else
+            {
+                /* ...flushing sequence is started; wait until flow-control message returns */
+                TRACE(INFO, _b("propagate end-of-stream condition"));
+            }
+        }
+
+        /* ...return early to prevent task rescheduling */
+        return XA_NO_ERROR;
+    }
+
+    /* ...reschedule processing if needed */
+    if (xf_input_port_ready(&codec->input) && xf_output_port_ready(&codec->output))
+    {
+        /* ...schedule data processing with respect to its urgency */
+        xa_base_schedule(base, produced * codec->factor);
+    }
+
+    return XA_NO_ERROR;
+}
+
+/* ...configuration parameter retrieval */
+static XA_ERRORCODE xa_codec_getparam(XACodecBase *base, WORD32 id, pVOID value)
+{
+    XAAudioCodec   *codec = (XAAudioCodec *) base;
+
+    if (id == XA_CODEC_CONFIG_PARAM_PRODUCED)
+    {
+        /* ...retrieve number of produced samples since last reset */
+        *(u32 *)value = codec->produced;
+
+        return XA_NO_ERROR;
+    }
+    else
+    {
+        /* ...pass command to underlying codec plugin */
+        return XA_API(base, XA_API_CMD_GET_CONFIG_PARAM, id, value);
+    }
+}
+
+/*******************************************************************************
+ * Component entry point
+ ******************************************************************************/
+
+/* ...command hooks */
+static XA_ERRORCODE (* const xa_codec_cmd[])(XACodecBase *, xf_message_t *) =
+{
+    [XF_OPCODE_TYPE(XF_SET_PARAM)] = xa_base_set_param,
+    [XF_OPCODE_TYPE(XF_GET_PARAM)] = xa_base_get_param,
+    [XF_OPCODE_TYPE(XF_ROUTE)] = xa_codec_port_route,
+    [XF_OPCODE_TYPE(XF_UNROUTE)] = xa_codec_port_unroute,
+    [XF_OPCODE_TYPE(XF_EMPTY_THIS_BUFFER)] = xa_codec_empty_this_buffer,
+    [XF_OPCODE_TYPE(XF_FILL_THIS_BUFFER)] = xa_codec_fill_this_buffer,
+    [XF_OPCODE_TYPE(XF_FLUSH)] = xa_codec_flush,
+    [XF_OPCODE_TYPE(XF_SET_PARAM_EXT)] = xa_base_set_param_ext,
+    [XF_OPCODE_TYPE(XF_GET_PARAM_EXT)] = xa_base_get_param_ext,
+};
+
+/* ...total number of commands supported */
+#define XA_CODEC_CMD_NUM        (sizeof(xa_codec_cmd) / sizeof(xa_codec_cmd[0]))
+
+/* ...command processor for termination state (only for routed port case) */
+static int xa_audio_codec_terminate(xf_component_t *component, xf_message_t *m)
+{
+    XAAudioCodec   *codec = (XAAudioCodec *) component;
+    u32             opcode = m->opcode;
+
+    /* ...check if we received output port control message */
+    if (m == xf_output_port_control_msg(&codec->output))
+    {
+        /* ...output port flushing complete; mark port is idle and terminate */
+        xf_output_port_flush_done(&codec->output);
+        return -1;
+    }
+    else if (opcode == XF_FILL_THIS_BUFFER)
+    {
+        /* ...output buffer returned by the sink component; ignore and keep waiting */
+        TRACE(OUTPUT, _b("collect output buffer"));
+        return 0;
+    }
+    else if (opcode == XF_UNREGISTER)
+    {
+        /* ...ignore subsequent unregister command/response - tbd */
+        return 0;
+    }
+    else
+    {
+        /* ...everything else is responded with generic failure */
+        xf_response_err(m);
+        return 0;
+    }
+}
+
+/* ...audio codec destructor */
+static int xa_audio_codec_destroy(xf_component_t *component, xf_message_t *m)
+{
+    XAAudioCodec   *codec = (XAAudioCodec *) component;
+    u32             core = xf_component_core(component);
+
+    /* ...destroy input port */
+    xf_input_port_destroy(&codec->input, core);
+
+    /* ...destroy output port */
+    xf_output_port_destroy(&codec->output, core);
+
+    /* ...deallocate all resources */
+    xa_base_destroy(&codec->base, XF_MM(sizeof(*codec)), core);
+
+    TRACE(INIT, _b("audio-codec[%p@%u] destroyed"), codec, core);
+
+    /* ...indicate the client has been destroyed */
+    return 0;
+}
+
+/* ...audio codec destructor - first stage (ports unrouting) */
+static int xa_audio_codec_cleanup(xf_component_t *component, xf_message_t *m)
+{
+    XAAudioCodec *codec = (XAAudioCodec *) component;
+
+    /* ...complete message with error response */
+    xf_response_err(m);
+
+    /* ...cancel internal scheduling message if needed */
+    xa_base_cancel(&codec->base);
+
+    /* ...purge input port (returns OK? pretty strange at this point - tbd) */
+    xf_input_port_purge(&codec->input);
+
+    /* ...propagate unregister command to connected component */
+    if (xf_output_port_flush(&codec->output, XF_FLUSH))
+    {
+        /* ...flushing sequence is not needed; destroy audio codec */
+        return xa_audio_codec_destroy(component, NULL);
+    }
+    else
+    {
+        /* ...wait until output port is cleaned; adjust component hooks */
+        component->entry = xa_audio_codec_terminate;
+        component->exit = xa_audio_codec_destroy;
+
+        TRACE(INIT, _b("codec[%p] cleanup sequence started"), codec);
+
+        /* ...indicate that second stage is required */
+        return 1;
+    }
+}
+
+/*******************************************************************************
+ * Audio codec component factory
+ ******************************************************************************/
+
+xf_component_t * xa_audio_codec_factory(u32 core, xa_codec_func_t process)
+{
+    XAAudioCodec   *codec;
+
+    /* ...allocate local memory for codec structure */
+    XF_CHK_ERR(codec = (XAAudioCodec *) xa_base_factory(core, XF_MM(sizeof(*codec)), process), NULL);
+
+    /* ...set base codec API methods */
+    codec->base.memtab = xa_codec_memtab;
+    codec->base.preprocess = xa_codec_preprocess;
+    codec->base.postprocess = xa_codec_postprocess;
+    codec->base.getparam = xa_codec_getparam;
+
+    /* ...set message commands processing table */
+    codec->base.command = xa_codec_cmd;
+    codec->base.command_num = XA_CODEC_CMD_NUM;
+
+    /* ...set component destructor hook */
+    codec->base.component.exit = xa_audio_codec_cleanup;
+
+    TRACE(INIT, _b("Codec[%p] initialized"), codec);
+
+    return (xf_component_t *) codec;
+}
diff --git a/hifi/xaf/hifi-dpf/audio/xa-class-base.c b/hifi/xaf/hifi-dpf/audio/xa-class-base.c
new file mode 100644
index 0000000..ef1110e
--- /dev/null
+++ b/hifi/xaf/hifi-dpf/audio/xa-class-base.c
@@ -0,0 +1,537 @@
+/*******************************************************************************
+* Copyright (C) 2018 Cadence Design Systems, Inc.
+* 
+* Permission is hereby granted, free of charge, to any person obtaining
+* a copy of this software and associated documentation files (the
+* "Software"), to use this Software with Cadence processor cores only and 
+* not with any other processors and platforms, subject to
+* the following conditions:
+* 
+* The above copyright notice and this permission notice shall be included
+* in all copies or substantial portions of the Software.
+* 
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+******************************************************************************/
+
+/*******************************************************************************
+ * xa-class-base.c
+ *
+ * Generic audio codec task implementation
+ *
+ ******************************************************************************/
+
+#define MODULE_TAG                      BASE
+
+/*******************************************************************************
+ * Includes
+ ******************************************************************************/
+
+#include "xf.h"
+#include "xa-class-base.h"
+
+/*******************************************************************************
+ * Tracing configuration
+ ******************************************************************************/
+
+TRACE_TAG(INIT, 1);
+TRACE_TAG(WARNING, 1);
+TRACE_TAG(SETUP, 1);
+TRACE_TAG(EXEC, 1);
+
+/*******************************************************************************
+ * Internal functions definitions
+ ******************************************************************************/
+
+/* ...codec pre-initialization */
+static XA_ERRORCODE xa_base_preinit(XACodecBase *base, u32 core)
+{
+    WORD32      n;
+
+    /* ...codec must be empty */
+    XF_CHK_ERR(base->state == 0, XA_API_FATAL_INVALID_CMD);
+
+    /* ...get API structure size */
+    XA_API(base, XA_API_CMD_GET_API_SIZE, 0, &n);
+
+    /* ...allocate memory for codec API structure (4-bytes aligned) */
+    XMALLOC(&base->api, n, 4, core);
+
+    /* ...set default config parameters */
+    XA_API(base, XA_API_CMD_INIT, XA_CMD_TYPE_INIT_API_PRE_CONFIG_PARAMS, NULL);
+
+    /* ...get memory info tables size */
+    if (XA_API(base, XA_API_CMD_GET_MEMTABS_SIZE, 0, &n), n != 0)
+    {
+        /* ...allocate memory for tables (4-bytes aligned) */
+        XMALLOC(&base->mem_tabs, n, 4, core);
+
+        /* ...set pointer for process memory tables */
+        XA_API(base, XA_API_CMD_SET_MEMTABS_PTR, 0, base->mem_tabs.addr);
+    }
+    
+    TRACE(INIT, _b("Codec[%p] pre-initialization completed"), base);
+    
+    return XA_NO_ERROR;
+}
+
+/* ...post-initialization setup */
+static XA_ERRORCODE xa_base_postinit(XACodecBase *base, u32 core)
+{
+    WORD32  n, i;
+    
+    /* ...issue post-config command and determine the buffer requirements */
+    XA_API(base, XA_API_CMD_INIT, XA_CMD_TYPE_INIT_API_POST_CONFIG_PARAMS, NULL);
+
+    /* ...get number of memory tables required */
+    XA_API(base, XA_API_CMD_GET_N_MEMTABS, 0, &n);
+
+    /* ...set scratch buffer in advance (as codec not necessarily exposes it) */
+    base->scratch = XF_CORE_DATA(core)->scratch;
+
+    /* ...allocate memory buffers */
+    for (i = 0; i < n; i++)
+    {
+        WORD32      size, align, type;
+
+        TRACE(1, _b("i = %u (of %u)"), (u32)i, (u32)n);
+        
+        /* ...get memory type */
+        XA_API(base, XA_API_CMD_GET_MEM_INFO_TYPE, i, &type);
+
+        /* ...get memory size of i-th buffer */
+        XA_API(base, XA_API_CMD_GET_MEM_INFO_SIZE, i, &size);
+
+        /* ...get alignment */
+        XA_API(base, XA_API_CMD_GET_MEM_INFO_ALIGNMENT, i, &align);
+
+        /* ...process individual buffer */
+        switch (type)
+        {
+        case XA_MEMTYPE_SCRATCH:
+            /* ...scratch memory is shared among all codecs; check its validity */
+            XF_CHK_ERR(size <= XF_CFG_CODEC_SCRATCHMEM_SIZE, XA_API_FATAL_MEM_ALLOC);
+
+            /* ...make sure alignment is valid */
+            XF_CHK_ERR((XF_CFG_CODEC_SCRATCHMEM_ALIGN & (align - 1)) == 0, XA_API_FATAL_MEM_ALIGN);
+
+            /* ...set the scratch memory pointer */
+            XA_API(base, XA_API_CMD_SET_MEM_PTR, i, base->scratch);
+
+            TRACE(INIT, _b("Mem tab %d: sz=%d al=%d ty=%d Scratch memory (%p)"), i, size, align, type, base->scratch);
+
+            break;
+
+        case XA_MEMTYPE_PERSIST:
+            /* ...allocate persistent memory */
+            XMALLOC(&base->persist, size, align, core);
+
+            /* ...and set the pointer instantly */
+            XA_API(base, XA_API_CMD_SET_MEM_PTR, i, base->persist.addr);
+
+            TRACE(INIT, _b("Mem tab %d: sz=%d al=%d ty=%d Persistent memory (%p)"), i, size, align, type, base->persist.addr);
+
+            break;
+
+        case XA_MEMTYPE_INPUT:
+        case XA_MEMTYPE_OUTPUT:
+            /* ...input/output buffer specification; pass to codec function */
+            CODEC_API(base, memtab, i, type, size, align, core);
+
+            break;
+
+        default:
+            /* ...unrecognized memory type */
+            TRACE(ERROR, _x("Invalid memory type: [%d]=(%u, %u, %u)"), i, type, size, align);
+            return XA_API_FATAL_INVALID_CMD_TYPE;
+        }
+    }
+
+    TRACE(INIT, _b("Codec[%p] post-initialization completed (api:%p[%u])"), base, base->api.addr, base->api.size);
+
+    return XA_NO_ERROR;
+}
+
+/*******************************************************************************
+ * Commands processing
+ ******************************************************************************/
+
+/* ...SET-PARAM processing (enabled in all states) */
+XA_ERRORCODE xa_base_set_param(XACodecBase *base, xf_message_t *m)
+{
+    xf_set_param_msg_t     *cmd = m->buffer;
+    xf_set_param_item_t    *param = &cmd->item[0];
+    WORD32                  n, i;
+
+    /* ...calculate total amount of parameters */
+    n = m->length / sizeof(*param);
+
+    /* ...check the message length is valid */
+    XF_CHK_ERR(m->length == XF_SET_PARAM_CMD_LEN(n), XA_API_FATAL_INVALID_CMD_TYPE);
+
+    /* ...apply all parameters; pass to codec-specific function */
+    for (i = 0; i < n; i++)
+    {
+        TRACE(SETUP, _b("set-param[%p]: [%u]=%u"), base, param[i].id, param[i].value);
+
+        if (base->setparam)
+        {
+            CODEC_API(base, setparam, param[i].id, &param[i].value);
+        }
+        else
+        {
+            XA_API(base, XA_API_CMD_SET_CONFIG_PARAM, param[i].id, &param[i].value);
+        }
+    }
+
+    /* ...check if we need to do post-initialization */
+    if ((base->state & XA_BASE_FLAG_POSTINIT) == 0)
+    {
+        /* ...do post-initialization step */
+        XA_CHK(xa_base_postinit(base, XF_MSG_DST_CORE(m->id)));
+        
+        /* ...mark the codec static configuration is set */
+        base->state ^= XA_BASE_FLAG_POSTINIT | XA_BASE_FLAG_RUNTIME_INIT;
+    }
+    
+    /* ...complete message processing; output buffer is empty */
+    xf_response_ok(m);
+
+    return XA_NO_ERROR;
+}
+
+/* ...GET-PARAM message processing (enabled in all states) */
+XA_ERRORCODE xa_base_get_param(XACodecBase *base, xf_message_t *m)
+{
+    xf_get_param_msg_t *cmd = m->buffer;
+    u32                *id = &cmd->c.id[0];
+    u32                *value = &cmd->r.value[0];
+    u32                 n, i;
+
+    /* ...calculate amount of parameters */
+    n = m->length / sizeof(*id);
+
+    /* ...check input parameter length */
+    XF_CHK_ERR(XF_GET_PARAM_CMD_LEN(n) == m->length, XA_API_FATAL_INVALID_CMD_TYPE);
+
+    /* ...retrieve the collection of codec  parameters */
+    for (i = 0; i < n; i++)
+    {
+        /* ...place the result into same location */
+        if (base->getparam)
+        {
+            CODEC_API(base, getparam, id[i], &value[i]);
+        }
+        else
+        {
+            XA_API(base, XA_API_CMD_GET_CONFIG_PARAM, id[i], &value[i]);
+        }
+    }
+
+    /* ...complete message specifying output buffer size */
+    xf_response_data(m, XF_GET_PARAM_RSP_LEN(n));
+
+    return XA_NO_ERROR;
+}
+
+/* ...SET-PARAM-EXT processing (enabled in all states) */
+XA_ERRORCODE xa_base_set_param_ext(XACodecBase *base, xf_message_t *m)
+{
+    xf_ext_param_msg_t *cmd = m->buffer;
+    u16                 length = m->length;
+    u16                 remaining = (length + 3) & ~3;
+    u16                 i;
+    
+    for (i = 0; TRACE_CFG(SETUP) && i < remaining; i += 16)
+    {
+        TRACE(SETUP, _b("[%03x]: %02X:%02X:%02X:%02X:%02X:%02X:%02X:%02X:%02X:%02X:%02X:%02X:%02X:%02X:%02X:%02X"),
+              i, 
+              ((u8 *)m->buffer)[i + 0], ((u8 *)m->buffer)[i + 1],
+              ((u8 *)m->buffer)[i + 2], ((u8 *)m->buffer)[i + 3],
+              ((u8 *)m->buffer)[i + 4], ((u8 *)m->buffer)[i + 5],
+              ((u8 *)m->buffer)[i + 6], ((u8 *)m->buffer)[i + 7],
+              ((u8 *)m->buffer)[i + 8], ((u8 *)m->buffer)[i + 9],
+              ((u8 *)m->buffer)[i + 10], ((u8 *)m->buffer)[i + 11],
+              ((u8 *)m->buffer)[i + 12], ((u8 *)m->buffer)[i + 13],
+              ((u8 *)m->buffer)[i + 14], ((u8 *)m->buffer)[i + 15]);
+    }    
+
+    /* ...process all parameters encapsulated in buffer */
+    while (remaining >= sizeof(*cmd))
+    {
+        u16     id = cmd->desc.id;
+        u16     dlen = cmd->desc.length;
+        u16     dsize = (dlen + 3) & ~3;
+        u16     pad = dlen & 3;
+
+        /* ...cut-off descriptor header */
+        remaining -= sizeof(*cmd);
+
+        TRACE(SETUP, _b("remaining:%u, desc_size:%u"), (u32)remaining, (u32)dsize);
+        
+        /* ...make sure length is sufficient */        
+        XF_CHK_ERR(remaining >= dsize, XA_API_FATAL_INVALID_CMD_TYPE);
+        
+        /* ...pad remaining bytes with zeroes */
+        (pad ? memset(cmd->data + dlen, 0, 4 - pad) : 0);
+
+        TRACE(SETUP, _b("set-ext-param[%p]: [%u]:%u - [%02X:%02X:%02X:%02X:...]"), base, id, dsize, cmd->data[0], cmd->data[1], cmd->data[2], cmd->data[3]);
+
+        /* ...apply parameter */
+        XA_API(base, XA_API_CMD_SET_CONFIG_PARAM, id, cmd->data);
+
+        /* ...move to next item (keep 4-bytes alignment for descriptor) */
+        cmd = (xf_ext_param_msg_t *)(&cmd->data[0] + dsize), remaining -= dsize;
+    }
+    
+    /* ...check the message is fully processed */
+    XF_CHK_ERR(remaining == 0, XA_API_FATAL_INVALID_CMD_TYPE);
+
+    /* ...complete message processing; output buffer is empty */
+    //xf_response_ok(m);
+
+    /* ...unfortunately, it looks like a bug of the library that updates the memory
+     * and leaves it in a dirty state causing subsequent cache inconsistency - tbd
+     */
+    xf_response_data(m, length);
+
+    return XA_NO_ERROR;
+}
+
+/* ...GET-PARAM-EXT message processing (enabled in all states) */
+XA_ERRORCODE xa_base_get_param_ext(XACodecBase *base, xf_message_t *m)
+{
+    xf_ext_param_msg_t *cmd = m->buffer;
+    u32                 length = m->length;
+    u32                 remaining = (length + 3) & ~3;
+    int                 i;
+
+    for (i = 0; TRACE_CFG(SETUP) && i < remaining; i += 16)
+    {
+        TRACE(SETUP, _b("[%03x]: %02X:%02X:%02X:%02X:%02X:%02X:%02X:%02X:%02X:%02X:%02X:%02X:%02X:%02X:%02X:%02X"),
+              i, 
+              ((u8 *)m->buffer)[i + 0], ((u8 *)m->buffer)[i + 1],
+              ((u8 *)m->buffer)[i + 2], ((u8 *)m->buffer)[i + 3],
+              ((u8 *)m->buffer)[i + 4], ((u8 *)m->buffer)[i + 5],
+              ((u8 *)m->buffer)[i + 6], ((u8 *)m->buffer)[i + 7],
+              ((u8 *)m->buffer)[i + 8], ((u8 *)m->buffer)[i + 9],
+              ((u8 *)m->buffer)[i + 10], ((u8 *)m->buffer)[i + 11],
+              ((u8 *)m->buffer)[i + 12], ((u8 *)m->buffer)[i + 13],
+              ((u8 *)m->buffer)[i + 14], ((u8 *)m->buffer)[i + 15]);
+    }
+    
+    /* ...process all parameters encapsulated in buffer */
+    while (remaining >= sizeof(*cmd))
+    {
+        u16     id = cmd->desc.id;
+        u16     len = cmd->desc.length;
+        u16     size = (len + 3) & ~3;
+        u8      pad = len & 3;
+
+        /* ...cut-off command header */
+        remaining -= sizeof(*cmd);
+
+        /* ...make sure data buffer has sufficient length */
+        XF_CHK_ERR(remaining >= size, XA_API_FATAL_INVALID_CMD_TYPE);
+        
+        /* ...retrieve parameter from buffer (care about alignment? - tbd) */
+        XA_API(base, XA_API_CMD_GET_CONFIG_PARAM, id, cmd->data);
+
+        /* ...pad remaininig bytes with zeroes */
+        (pad ? memset(cmd->data + len, 0, 4 - pad) : 0);
+
+        TRACE(SETUP, _b("get-ext-param[%p]: [%u]:%u - [%02X:%02X:%02X:%02X:...]"), base, id, size, cmd->data[0], cmd->data[1], cmd->data[2], cmd->data[3]);
+        
+        /* ...move to next item (alignment issues? - tbd) */
+        cmd = (xf_ext_param_msg_t *)(&cmd->data[0] + size), remaining -= size;
+    }
+    
+    /* ...check the message is fully processed */
+    XF_CHK_ERR(remaining == 0, XA_API_FATAL_INVALID_CMD_TYPE);
+
+    /* ...complete message processing; output buffer has the same length */
+    xf_response_data(m, length);
+
+    return XA_NO_ERROR;
+}
+
+/*******************************************************************************
+ * Command/data processing functions
+ ******************************************************************************/
+
+/* ...generic codec data processing */
+static XA_ERRORCODE xa_base_process(XACodecBase *base)
+{
+    XA_ERRORCODE    error;
+    WORD32          done;
+
+    /* ...clear internal scheduling flag */
+    base->state &= ~XA_BASE_FLAG_SCHEDULE;
+        
+    /* ...codec-specific preprocessing (buffer maintenance) */
+    if ((error = CODEC_API(base, preprocess)) != XA_NO_ERROR)
+    {
+        /* ...return non-fatal codec error */
+        return error;
+    }
+
+    /* ...execution step */
+    if (base->state & XA_BASE_FLAG_RUNTIME_INIT)
+    {
+        /* ...kick initialization process */
+        XA_API(base, XA_API_CMD_INIT, XA_CMD_TYPE_INIT_PROCESS, NULL);
+
+        /* ...check if initialization is completed */
+        XA_API(base, XA_API_CMD_INIT, XA_CMD_TYPE_INIT_DONE_QUERY, &done);
+
+        TRACE(EXEC, _b("Initialization result: %d"), done);
+
+        /* ...switch to execution state if required */
+        (done ? base->state ^= XA_BASE_FLAG_RUNTIME_INIT | XA_BASE_FLAG_EXECUTION : 0);
+    }
+    else if (base->state & XA_BASE_FLAG_EXECUTION)
+    {
+        TRACE(1, _b("do exec"));
+        
+        /* ...execute decoding process */
+        XA_API(base, XA_API_CMD_EXECUTE, XA_CMD_TYPE_DO_EXECUTE, NULL);
+
+        /* ...check for end-of-stream condition */
+        XA_API(base, XA_API_CMD_EXECUTE, XA_CMD_TYPE_DONE_QUERY, &done);
+
+        TRACE(EXEC, _b("Execution result: %d"), done);
+
+        /* ...mark the output path is done to release all queued buffers */
+        (done ? base->state ^= XA_BASE_FLAG_EXECUTION | XA_BASE_FLAG_COMPLETED : 0);
+    }
+
+    /* ...codec-specific buffer post-processing */
+    return CODEC_API(base, postprocess, done);
+}
+                              
+/* ...message-processing function (component entry point) */
+static int xa_base_command(xf_component_t *component, xf_message_t *m)
+{
+    XACodecBase    *base = (XACodecBase *) component;
+    u32             cmd;
+    
+    /* ...invoke data-processing function if message is null */
+    if (m == NULL)
+    {
+        XF_CHK_ERR(!XA_ERROR_SEVERITY(xa_base_process(base)), -EPIPE);
+        return 0;
+    }
+
+    /* ...process the command */
+    TRACE(EXEC, _b("[%p]:state[%X]:(%X, %d, %p)"), base, base->state, m->opcode, m->length, m->buffer);
+
+    /* ...bail out if this is forced termination command (I do have a map; maybe I'd better have a hook? - tbd) */
+    if ((cmd = XF_OPCODE_TYPE(m->opcode)) == XF_OPCODE_TYPE(XF_UNREGISTER))
+    {
+        TRACE(INIT, _b("force component[%p] termination"), base);
+        return -1;    
+    }
+    
+    /* ...check opcode is valid */
+    XF_CHK_ERR(cmd < base->command_num, -EINVAL);
+
+    /* ...and has a hook */
+    XF_CHK_ERR(base->command[cmd] != NULL, -EINVAL);
+    
+    /* ...pass control to specific command */
+    XF_CHK_ERR(!XA_ERROR_SEVERITY(base->command[cmd](base, m)), -EPIPE);
+
+    /* ...execution completed successfully */
+    return 0;
+}
+
+/*******************************************************************************
+ * Base codec API
+ ******************************************************************************/
+
+/* ...data processing scheduling */
+void xa_base_schedule(XACodecBase *base, u32 dts)
+{
+    if ((base->state & XA_BASE_FLAG_SCHEDULE) == 0)
+    {
+        /* ...schedule component task execution */
+        xf_component_schedule(&base->component, dts);
+
+        /* ...and put scheduling flag */
+        base->state ^= XA_BASE_FLAG_SCHEDULE;
+    }
+    else
+    {
+        TRACE(EXEC, _b("codec[%p] processing pending"), base);
+    }
+}
+
+/* ...cancel data processing */
+void xa_base_cancel(XACodecBase *base)
+{
+    if (base->state & XA_BASE_FLAG_SCHEDULE)
+    {
+        /* ...cancel scheduled codec task */
+        xf_component_cancel(&base->component);
+
+        /* ...and clear scheduling flag */
+        base->state ^= XA_BASE_FLAG_SCHEDULE;
+
+        TRACE(EXEC, _b("codec[%p] processing cancelled"), base);
+    }
+}
+
+/* ...base codec destructor */
+void xa_base_destroy(XACodecBase *base, u32 size, u32 core)
+{
+    /* ...deallocate all resources */
+    xf_mm_free_buffer(&base->persist, core);
+    xf_mm_free_buffer(&base->mem_tabs, core);
+    xf_mm_free_buffer(&base->api, core);
+
+    /* ...destroy codec structure (and task) itself */
+    xf_mem_free(base, size, core, 0);
+
+    TRACE(INIT, _b("codec[%p]:%u destroyed"), base, core);
+}
+
+/* ...generic codec initialization routine */
+XACodecBase * xa_base_factory(u32 core, u32 size, xa_codec_func_t process)
+{
+    XACodecBase    *base;
+
+    /* ...make sure the size is valid */
+    XF_CHK_ERR(size >= sizeof(XACodecBase), NULL);
+    
+    /* ...allocate local memory for codec structure */
+    XF_CHK_ERR(base = xf_mem_alloc(size, 0, core, 0), NULL);
+ 
+    /* ...reset codec memory */
+    memset(base, 0, size);
+
+    /* ...set low-level codec API function */
+    base->process = process;
+
+    /* ...set message processing function */
+    base->component.entry = xa_base_command;
+
+    /* ...do basic initialization */
+    if (xa_base_preinit(base, core) != XA_NO_ERROR)
+    {
+        /* ...initialization failed for some reason; do cleanup */
+        xa_base_destroy(base, size, core);
+
+        return NULL;
+    }   
+
+    /* ...initialization completed successfully */
+    TRACE(INIT, _b("Codec[%p]:%u initialized"), base, core);
+    
+    return base;
+}
diff --git a/hifi/xaf/hifi-dpf/audio/xa-class-base.h b/hifi/xaf/hifi-dpf/audio/xa-class-base.h
new file mode 100644
index 0000000..252044d
--- /dev/null
+++ b/hifi/xaf/hifi-dpf/audio/xa-class-base.h
@@ -0,0 +1,263 @@
+/*******************************************************************************
+* Copyright (C) 2018 Cadence Design Systems, Inc.
+* 
+* Permission is hereby granted, free of charge, to any person obtaining
+* a copy of this software and associated documentation files (the
+* "Software"), to use this Software with Cadence processor cores only and 
+* not with any other processors and platforms, subject to
+* the following conditions:
+* 
+* The above copyright notice and this permission notice shall be included
+* in all copies or substantial portions of the Software.
+* 
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+******************************************************************************/
+
+/*******************************************************************************
+ * xa-class-base.h
+ *
+ * Generic Xtensa Audio codecs interfaces
+ *
+ ******************************************************************************/
+
+#ifndef __XA_CLASS_BASE_H
+#define __XA_CLASS_BASE_H
+
+/*******************************************************************************
+ * Includes
+ ******************************************************************************/
+
+/* ...audio-specific API */
+#include "audio/xa_type_def.h"
+#include "audio/xa_error_standards.h"
+#include "audio/xa_apicmd_standards.h"
+#include "audio/xa_memory_standards.h"
+
+/*******************************************************************************
+ * Generic codec structure
+ ******************************************************************************/
+
+typedef struct XACodecBase XACodecBase;
+
+/* ...memory buffer initialization */
+typedef XA_ERRORCODE  (*xa_codec_memtab_f)(XACodecBase *codec, WORD32 i, WORD32 type, WORD32 size, WORD32 align, u32 core);
+
+/* ...preprocessing operation */
+typedef XA_ERRORCODE  (*xa_codec_preprocess_f)(XACodecBase *);
+
+/* ...postprocessing operation */
+typedef XA_ERRORCODE  (*xa_codec_postprocess_f)(XACodecBase *, int);
+
+/* ...parameter setting function */
+typedef XA_ERRORCODE  (*xa_codec_setparam_f)(XACodecBase *, WORD32, pVOID p);
+
+/* ...parameter retrival function */
+typedef XA_ERRORCODE  (*xa_codec_getparam_f)(XACodecBase *, WORD32, pVOID p);
+
+/*******************************************************************************
+ * Codec instance structure
+ ******************************************************************************/
+
+struct XACodecBase
+{
+    /***************************************************************************
+     * Control data
+     **************************************************************************/
+
+    /* ...generic component handle */
+    xf_component_t          component;
+
+    /* ...codec API entry point (function) */
+    xa_codec_func_t        *process;
+
+    /* ...codec API handle, passed to *process */
+    xf_mm_buffer_t          api;
+
+    /* ...memory table buffer */
+    xf_mm_buffer_t          mem_tabs;
+
+    /* ...persistent memory buffer */
+    xf_mm_buffer_t          persist;
+
+    /* ...scratch memory pointer */
+    void                   *scratch;
+
+    /* ...codec control state */
+    u32                     state;
+
+    /***************************************************************************
+     * Codec-specific methods
+     **************************************************************************/
+
+    /* ...memory buffer initialization */
+    xa_codec_memtab_f       memtab;
+ 
+    /* ...preprocessing function */
+    xa_codec_preprocess_f   preprocess;
+
+    /* ...postprocessing function */
+    xa_codec_postprocess_f  postprocess;
+
+    /* ...configuration parameter setting function */
+    xa_codec_setparam_f     setparam;
+
+    /* ...configuration parameter retrieval function */
+    xa_codec_getparam_f     getparam;
+    
+    /* ...command-processing table */
+    XA_ERRORCODE (* const * command)(XACodecBase *, xf_message_t *);
+    
+    /* ...command-processing table size */
+    u32                     command_num;
+};
+
+/*******************************************************************************
+ * Base codec execution flags
+ ******************************************************************************/
+
+/* ...codec static initialization completed */
+#define XA_BASE_FLAG_POSTINIT           (1 << 0)
+
+/* ...codec runtime initialization sequence */
+#define XA_BASE_FLAG_RUNTIME_INIT       (1 << 1)
+
+/* ...codec steady execution state */
+#define XA_BASE_FLAG_EXECUTION          (1 << 2)
+
+/* ...execution stage completed */
+#define XA_BASE_FLAG_COMPLETED          (1 << 3)
+
+/* ...data processing scheduling flag */
+#define XA_BASE_FLAG_SCHEDULE           (1 << 4)
+
+/* ...base codec flags accessor */
+#define __XA_BASE_FLAGS(flags)          ((flags) & ((1 << 5) - 1))
+
+/* ...custom execution flag */
+#define __XA_BASE_FLAG(f)               ((f) << 5)
+
+/*******************************************************************************
+ * Local macros definitions
+ ******************************************************************************/
+
+/* ...audio-framework API function execution */
+#define XA_CHK(cond)                            \
+({                                              \
+    XA_ERRORCODE  __e = (cond);                 \
+    if (__e != XA_NO_ERROR)                     \
+    {                                           \
+        if (XA_ERROR_SEVERITY(__e))             \
+        {                                       \
+            TRACE(ERROR, _x("error: %X"), __e); \
+            return __e;                         \
+        }                                       \
+        TRACE(WARNING, _x("warning: %X"), __e); \
+    }                                           \
+    __e;                                        \
+})
+
+/* ...low-level codec API function execution */
+#define XA_API(codec, cmd, idx, pv)                                                         \
+({                                                                                          \
+    XA_ERRORCODE  __e;                                                                      \
+    __e = (codec)->process((xa_codec_handle_t)(codec)->api.addr, (cmd), (idx), (pv));       \
+    if (__e != XA_NO_ERROR)                                                                 \
+    {                                                                                       \
+        if (XA_ERROR_SEVERITY(__e))                                                         \
+        {                                                                                   \
+            TRACE(ERROR, _x("[%p]:(%d, %d, %p): %X"), (codec), (cmd), (idx), (pv), __e);    \
+            return __e;                                                                     \
+        }                                                                                   \
+        TRACE(WARNING, _x("%X"), __e);                                                      \
+    }                                                                                       \
+    __e;                                                                                    \
+})
+
+#define XA_API_NORET(codec, cmd, idx, pv)                                                   \
+({                                                                                          \
+    XA_ERRORCODE  __e;                                                                      \
+    __e = (codec)->process((xa_codec_handle_t)(codec)->api.addr, (cmd), (idx), (pv));       \
+    if (__e != XA_NO_ERROR)                                                                 \
+    {                                                                                       \
+        if (XA_ERROR_SEVERITY(__e))                                                         \
+        {                                                                                   \
+            TRACE(ERROR, _x("[%p]:(%d, %d, %p): %X"), (codec), (cmd), (idx), (pv), __e);    \
+        }                                                                                   \
+        TRACE(WARNING, _x("%X"), __e);                                                      \
+    }                                                                                       \
+    __e;                                                                                    \
+})
+
+/* ...codec hook invocation */
+#define CODEC_API(codec, func, ...)                                 \
+({                                                                  \
+    XA_ERRORCODE    __e = (codec)->func((codec), ##__VA_ARGS__);    \
+                                                                    \
+    if (__e != XA_NO_ERROR)                                         \
+    {                                                               \
+        if (XA_ERROR_SEVERITY(__e))                                 \
+        {                                                           \
+            /* ...actual error is reported by the codec */          \
+            TRACE(ERROR, _x("[%p]: " #func ": %X"), (codec), __e);  \
+            return __e;                                             \
+        }                                                           \
+                                                                    \
+        TRACE(WARNING, _x("warning: %X"), __e);                     \
+    }                                                               \
+    __e;                                                            \
+})
+
+/* ...allocate local memory on specific core */
+#define XMALLOC(p, size, align, core)                                           \
+do                                                                              \
+{                                                                               \
+    if (xf_mm_alloc_buffer((size), (align), (core), (p)) != 0)                  \
+    {                                                                           \
+        TRACE(ERROR, _x("Failed to allocate %d bytes of memory"), (size));      \
+        return XA_API_FATAL_MEM_ALLOC;                                          \
+    }                                                                           \
+                                                                                \
+    if (((u32)((p)->addr) & ((align) - 1)) != 0)                                \
+    {                                                                           \
+        TRACE(ERROR, _x("Invalid %d-algnment: %p"), (align), (p)->addr);        \
+        return XA_API_FATAL_MEM_ALIGN;                                          \
+    }                                                                           \
+}                                                                               \
+while (0)
+
+/*******************************************************************************
+ * Public API
+ ******************************************************************************/
+
+/* ...SET-PARAM processing */
+extern XA_ERRORCODE xa_base_set_param(XACodecBase *base, xf_message_t *m);
+
+/* ...GET-PARAM-EXT message processing */
+extern XA_ERRORCODE xa_base_set_param_ext(XACodecBase *base, xf_message_t *m);
+
+/* ...GET-PARAM message processing */
+extern XA_ERRORCODE xa_base_get_param(XACodecBase *base, xf_message_t *m);
+
+/* ...GET-PARAM-EXT message processing */
+extern XA_ERRORCODE xa_base_get_param_ext(XACodecBase *base, xf_message_t *m);
+
+/* ...data processing scheduling */
+extern void xa_base_schedule(XACodecBase *base, u32 dts);
+
+/* ...cancel internal scheduling message */
+extern void xa_base_cancel(XACodecBase *base);
+
+/* ...base codec factory */
+extern XACodecBase * xa_base_factory(u32 core, u32 size, xa_codec_func_t process);
+
+/* ...base codec destructor */
+extern void xa_base_destroy(XACodecBase *base, u32 size, u32 core);
+
+#endif  /* __XA_CLASS_BASE_H */
diff --git a/hifi/xaf/hifi-dpf/audio/xa-class-mixer.c b/hifi/xaf/hifi-dpf/audio/xa-class-mixer.c
new file mode 100644
index 0000000..47b4740
--- /dev/null
+++ b/hifi/xaf/hifi-dpf/audio/xa-class-mixer.c
@@ -0,0 +1,870 @@
+/*******************************************************************************
+* Copyright (C) 2018 Cadence Design Systems, Inc.
+* 
+* Permission is hereby granted, free of charge, to any person obtaining
+* a copy of this software and associated documentation files (the
+* "Software"), to use this Software with Cadence processor cores only and 
+* not with any other processors and platforms, subject to
+* the following conditions:
+* 
+* The above copyright notice and this permission notice shall be included
+* in all copies or substantial portions of the Software.
+* 
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+******************************************************************************/
+
+/*******************************************************************************
+ * xa-class-mixer.c
+ *
+ * Generic mixer component class
+ *
+ ******************************************************************************/
+
+#define MODULE_TAG                      MIXER
+
+/*******************************************************************************
+ * Includes
+ ******************************************************************************/
+
+#include "xf.h"
+#include "xa-class-base.h"
+#include "audio/xa-mixer-api.h"
+
+/*******************************************************************************
+ * Tracing tags
+ ******************************************************************************/
+
+TRACE_TAG(INIT, 1);
+TRACE_TAG(WARNING, 1);
+TRACE_TAG(INFO, 1);
+TRACE_TAG(INPUT, 1);
+TRACE_TAG(OUTPUT, 1);
+
+/*******************************************************************************
+ * Data structures
+ ******************************************************************************/
+
+/* ...mixed source - input data */
+typedef struct XATrack
+{
+    /* ...input port data */
+    xf_input_port_t     input;
+
+    /* ...current presentation timestamp (in samples; local to a mixer state) */
+    u32                 pts;
+
+    /* ...total amount of decoded frames since last synchronization point */
+    u32                 decoded;
+
+    /* ...total amount of rendered frames (consumed) since last synchronization point */
+    u32                 rendered;
+
+}   XATrack;
+
+/*******************************************************************************
+ * Helpers
+ ******************************************************************************/
+
+static inline u32 xa_track_test_flags(XATrack *track, u32 flags)
+{
+    return (track->input.flags & flags);
+}
+
+static inline u32 xa_track_set_flags(XATrack *track, u32 flags)
+{
+    return (track->input.flags |= flags);
+}
+
+static inline u32 xa_track_clear_flags(XATrack *track, u32 flags)
+{
+    return (track->input.flags &= ~flags);
+}
+
+static inline u32 xa_track_toggle_flags(XATrack *track, u32 flags)
+{
+    return (track->input.flags ^= flags);
+}
+
+/*******************************************************************************
+ * Mixer data definitions
+ ******************************************************************************/
+
+/* ...mixer data */
+typedef struct XAMixer
+{
+    /***************************************************************************
+     * Control data
+     **************************************************************************/
+
+    /* ...generic audio codec data */
+    XACodecBase         base;
+
+    /* ...input tracks */
+    XATrack             track[XA_MIXER_MAX_TRACK_NUMBER];
+    
+    /* ...output port */
+    xf_output_port_t    output;
+
+    /***************************************************************************
+     * Run-time configuration parameters
+     **************************************************************************/
+
+    /* ...audio frame size in samples */
+    u32                 frame_size;
+
+    /* ...audio frame duration */
+    u32                 frame_duration;
+    
+    /* ...presentation timestamp (in samples; local mixer scope) */
+    u32                 pts;
+    
+}   XAMixer;
+
+/*******************************************************************************
+ * Mixer flags
+ ******************************************************************************/
+
+/* ...output port setup completed */
+#define XA_MIXER_FLAG_OUTPUT_SETUP      __XA_BASE_FLAG(1 << 0)
+
+/*******************************************************************************
+ * Track state flags
+ ******************************************************************************/
+
+/* ...track is idle (will autostart as soon as input data received) */
+#define XA_TRACK_FLAG_IDLE              __XF_INPUT_FLAG(1 << 0)
+
+/* ...track is rendered */
+#define XA_TRACK_FLAG_ACTIVE            __XF_INPUT_FLAG(1 << 1)
+
+/* ...track is paused */
+#define XA_TRACK_FLAG_PAUSED            __XF_INPUT_FLAG(1 << 2)
+
+/* ...track input port is setup */
+#define XA_TRACK_FLAG_INPUT_SETUP       __XF_INPUT_FLAG(1 << 3)
+
+/* ...track has received data */
+#define XA_TRACK_FLAG_RECVD_DATA        __XF_INPUT_FLAG(1 << 4)
+
+/*******************************************************************************
+ * Helper functions
+ ******************************************************************************/
+/* ...Count the tracks that have received data or are active*/
+static inline UWORD32 xa_mixer_check_active(XAMixer *mixer)
+{
+    XATrack        *track;
+    UWORD32            i;
+    UWORD32            cnt = 0;
+    
+    for (track = &mixer->track[i = 0]; i < XA_MIXER_MAX_TRACK_NUMBER; i++, track++)
+    {
+        if (xa_track_test_flags(track, XA_TRACK_FLAG_RECVD_DATA | XA_TRACK_FLAG_ACTIVE))
+            cnt++;
+    }
+    return cnt;
+}
+
+/* ...prepare mixer for steady operation */
+static inline XA_ERRORCODE xa_mixer_prepare_runtime(XAMixer *mixer)
+{
+    XACodecBase    *base = (XACodecBase *) mixer;
+    xf_message_t   *m = xf_msg_dequeue(&mixer->output.queue);
+    xf_start_msg_t *msg = m->buffer;
+    u32             frame_size;
+    u32             factor;
+    
+    /* ...query mixer parameters */
+    XA_API(base, XA_API_CMD_GET_CONFIG_PARAM, XA_MIXER_CONFIG_PARAM_SAMPLE_RATE, &msg->sample_rate);
+    XA_API(base, XA_API_CMD_GET_CONFIG_PARAM, XA_MIXER_CONFIG_PARAM_CHANNELS, &msg->channels);
+    XA_API(base, XA_API_CMD_GET_CONFIG_PARAM, XA_MIXER_CONFIG_PARAM_PCM_WIDTH, &msg->pcm_width);
+    XA_API(base, XA_API_CMD_GET_MEM_INFO_SIZE, 0, &msg->input_length);
+    XA_API(base, XA_API_CMD_GET_MEM_INFO_SIZE, XA_MIXER_MAX_TRACK_NUMBER, &msg->output_length);
+    XA_API(base, XA_API_CMD_GET_CONFIG_PARAM, XA_MIXER_CONFIG_PARAM_FRAME_SIZE, &frame_size);
+
+    /* ...calculate mixer frame duration; get upsample factor */
+    XF_CHK_ERR(factor = xf_timebase_factor(msg->sample_rate), XA_MIXER_CONFIG_FATAL_RANGE);
+
+    /* ...set mixer frame duration */
+    mixer->frame_duration = frame_size * factor;
+    
+    /* ...pass response to caller */
+    xf_response_data(m, sizeof(*msg));
+
+    return XA_NO_ERROR;
+}
+
+/*******************************************************************************
+ * Commands handlers
+ ******************************************************************************/
+
+/* ...EMPTY-THIS-BUFFER command processing */
+static XA_ERRORCODE xa_mixer_empty_this_buffer(XACodecBase *base, xf_message_t *m)
+{
+    XAMixer    *mixer = (XAMixer *) base;
+    u32         i = XF_MSG_DST_PORT(m->id);
+    XATrack    *track = &mixer->track[i];
+
+    /* ...make sure the port is valid */
+    XF_CHK_ERR(i < XA_MIXER_MAX_TRACK_NUMBER, XA_API_FATAL_INVALID_CMD_TYPE);
+    
+    /* ...command is allowed only in "postinit" state */
+    XF_CHK_ERR(base->state & XA_BASE_FLAG_POSTINIT, XA_API_FATAL_INVALID_CMD);
+
+    TRACE(INPUT, _b("track-%u: received buffer [%p]:%u"), i, m->buffer, m->length);
+
+    /* ...update received data for the track */
+    if (m->length)
+        xa_track_set_flags(track, XA_TRACK_FLAG_RECVD_DATA);
+    else
+        xa_track_clear_flags(track, XA_TRACK_FLAG_RECVD_DATA);
+    
+    /* ...place received message into track input port */
+    if (xf_input_port_put(&track->input, m))
+    {
+        /* ...process track autostart if needed */
+        if (xa_track_test_flags(track, XA_TRACK_FLAG_IDLE))
+        {
+            /* ...put track into active state */
+            xa_track_toggle_flags(track, XA_TRACK_FLAG_IDLE | XA_TRACK_FLAG_ACTIVE);
+            
+            /* ...save track presentation timestamp */
+            track->pts = mixer->pts;
+
+            TRACE(INFO, _b("track-%u started (pts=%x)"), i, track->pts);
+        }
+        
+        /* ...schedule data processing if there is output port available */
+        if (xf_output_port_ready(&mixer->output))
+        {
+            /* ...force data processing */
+            xa_base_schedule(base, 0);
+        }
+    }
+    
+    return XA_NO_ERROR;
+}
+
+/* ...FILL-THIS-BUFFER command processing */
+static XA_ERRORCODE xa_mixer_fill_this_buffer(XACodecBase *base, xf_message_t *m)
+{
+    XAMixer    *mixer = (XAMixer *) base;
+    u32         i = XF_MSG_DST_PORT(m->id);
+    
+    /* ...make sure the port is valid */
+    XF_CHK_ERR(i == XA_MIXER_MAX_TRACK_NUMBER, XA_API_FATAL_INVALID_CMD_TYPE);
+    
+    /* ...command is allowed only in "postinit" state */
+    XF_CHK_ERR(base->state & XA_BASE_FLAG_POSTINIT, XA_API_FATAL_INVALID_CMD);
+
+    /* ...process runtime initialization explicitly */
+    if (base->state & XA_BASE_FLAG_RUNTIME_INIT)
+    {
+        /* ...message must be zero-length */
+        XF_CHK_ERR(m->length == 0, XA_MIXER_EXEC_FATAL_STATE);
+    }
+    else if (m->length != 0) /* ...EOS response */
+    {
+        /* ...message must have exactly expected size (there is no ordered abortion) */
+        XF_CHK_ERR(m->length == mixer->output.length, XA_MIXER_EXEC_FATAL_STATE);
+    }
+
+    TRACE(OUTPUT, _b("received output buffer [%p]:%u"), m->buffer, m->length);
+    
+    /* ...put message into output port */
+    if (xf_output_port_put(&mixer->output, m))
+    {
+        /* ...force data processing */
+        xa_base_schedule(base, 0);
+    }
+
+    return XA_NO_ERROR;
+}
+
+/* ...output port routing */
+static XA_ERRORCODE xa_mixer_port_route(XACodecBase *base, xf_message_t *m)
+{
+    XAMixer                *mixer = (XAMixer *) base;
+    xf_route_port_msg_t    *cmd = m->buffer;
+    xf_output_port_t       *port = &mixer->output;
+    u32                     src = XF_MSG_DST(m->id);
+    u32                     dst = cmd->dst;
+    
+    /* ...command is allowed only in "postinit" state */
+    XF_CHK_ERR(base->state & XA_BASE_FLAG_POSTINIT, XA_API_FATAL_INVALID_CMD);
+
+    /* ...make sure output port is addressed */
+    XF_CHK_ERR(XF_MSG_DST_PORT(m->id) == XA_MIXER_MAX_TRACK_NUMBER, XA_API_FATAL_INVALID_CMD_TYPE);
+
+    /* ...make sure port is not routed yet */
+    XF_CHK_ERR(!xf_output_port_routed(port), XA_API_FATAL_INVALID_CMD_TYPE);
+
+    /* ...route output port - allocate queue */
+    XF_CHK_ERR(xf_output_port_route(port, __XF_MSG_ID(dst, src), cmd->alloc_number, cmd->alloc_size, cmd->alloc_align) == 0, XA_API_FATAL_MEM_ALLOC);
+
+    /* ...schedule processing instantly - tbd - check if we have anything pending on input */
+    xa_base_schedule(base, 0);
+    
+    /* ...pass success result to caller */
+    xf_response_ok(m);
+    
+    return XA_NO_ERROR;
+}
+
+/* ...port unroute command */
+static XA_ERRORCODE xa_mixer_port_unroute(XACodecBase *base, xf_message_t *m)
+{
+    XAMixer            *mixer = (XAMixer *) base;
+    xf_output_port_t   *port = &mixer->output;
+    
+    /* ...command is allowed only in "postinit" state */
+    XF_CHK_ERR(base->state & XA_BASE_FLAG_POSTINIT, XA_API_FATAL_INVALID_CMD);
+
+    /* ...make sure output port is addressed */
+    XF_CHK_ERR(XF_MSG_DST_PORT(m->id) == XA_MIXER_MAX_TRACK_NUMBER, XA_API_FATAL_INVALID_CMD_TYPE);
+
+    /* ...cancel any pending processing */
+    xa_base_cancel(base);
+
+    /* ...clear output-port-setup condition */
+    base->state &= ~XA_MIXER_FLAG_OUTPUT_SETUP;
+
+    /* ...pass flush command down the graph */
+    if (xf_output_port_flush(port, XF_FLUSH))
+    {
+        TRACE(INFO, _b("port is idle; instantly unroute"));
+
+        /* ...flushing sequence is not needed; command may be satisfied instantly */
+        xf_output_port_unroute(port);
+
+        /* ...pass response to the proxy */
+        xf_response_ok(m);
+    }
+    else
+    {
+        TRACE(INFO, _b("port is busy; propagate unroute command"));
+
+        /* ...flushing sequence is started; save flow-control message */
+        xf_output_port_unroute_start(port, m);
+    }
+
+    return XA_NO_ERROR;
+}
+
+/* ...PAUSE message processing */
+static XA_ERRORCODE xa_mixer_pause(XACodecBase *base, xf_message_t *m)
+{
+    XAMixer    *mixer = (XAMixer *) base;
+    u32         i = XF_MSG_DST_PORT(m->id);
+    XATrack    *track = &mixer->track[i];
+    
+    /* ...make sure the buffer is empty */
+    XF_CHK_ERR(m->length == 0, XA_API_FATAL_INVALID_CMD_TYPE);
+    
+    /* ...check destination port is valid */
+    XF_CHK_ERR(i < XA_MIXER_MAX_TRACK_NUMBER, XA_API_FATAL_INVALID_CMD_TYPE);
+
+    /* ...check for actual track flags */
+    if (xa_track_test_flags(track, XA_TRACK_FLAG_ACTIVE))
+    {
+        /* ...switch to paused state */
+        xa_track_toggle_flags(track, XA_TRACK_FLAG_ACTIVE | XA_TRACK_FLAG_PAUSED);
+
+        /* ...other tracks may be waiting for this one, so force data processing */
+        if (xf_output_port_ready(&mixer->output))
+        {
+            xa_base_schedule(base, 0);
+        }
+
+        TRACE(INFO, _b("mixer[%p]::track[%u] paused"), mixer, i);
+    }
+    else
+    {
+        /* ...track is in idle state and pausing here means suspending */
+        TRACE(INFO, _b("mixer[%p]::track[%u] is not active"), mixer, i);
+    }
+
+    /* ...complete message immediately */
+    xf_response(m);
+    
+    return XA_NO_ERROR;
+}
+
+/* ...RESUME command processing */
+static XA_ERRORCODE xa_mixer_resume(XACodecBase *base, xf_message_t *m)
+{
+    XAMixer    *mixer = (XAMixer *) base;
+    u32         i = XF_MSG_DST_PORT(m->id);
+    XATrack    *track = &mixer->track[i];
+    
+    /* ...make sure the buffer is empty */
+    XF_CHK_ERR(m->length == 0, XA_API_FATAL_INVALID_CMD_TYPE);
+    
+    /* ...check destination port is valid */
+    XF_CHK_ERR(i < XA_MIXER_MAX_TRACK_NUMBER, XA_API_FATAL_INVALID_CMD_TYPE);
+    
+    /* ...check for actual track state */
+    if (xa_track_test_flags(track, XA_TRACK_FLAG_PAUSED))
+    {
+        /* ...switch track to active state */
+        xa_track_toggle_flags(track, XA_TRACK_FLAG_ACTIVE | XA_TRACK_FLAG_PAUSED);
+
+        /* ...reset track presentation timestamp - tbd */
+        track->pts = mixer->pts;
+
+        /* ...force data processing if there is an output buffer */
+        if (xf_output_port_ready(&mixer->output))
+        {
+            xa_base_schedule(base, 0);
+        }
+
+        TRACE(INFO, _b("mixer[%p]::track[%u] resumed"), mixer, i);
+    }
+    else
+    {
+        /* ...track is in idle state; do nothing */
+        TRACE(INFO, _b("mixer[%p]::track[%u] is not paused"), mixer, i);
+    }
+    
+    /* ...complete message */
+    xf_response(m);
+    
+    return XA_NO_ERROR;
+}
+
+/* ...FLUSH command processing */
+static XA_ERRORCODE xa_mixer_flush(XACodecBase *base, xf_message_t *m)
+{
+    XAMixer    *mixer = (XAMixer *) base;
+    u32         i = XF_MSG_DST_PORT(m->id);
+    XATrack    *track = &mixer->track[i];
+
+    /* ...make sure the buffer is empty */
+    XF_CHK_ERR(m->length == 0, XA_API_FATAL_INVALID_CMD_TYPE);
+
+    /* ...check destination port index */
+    if (i == XA_MIXER_MAX_TRACK_NUMBER)
+    {
+        /* ...flushing response received; that is a port unrouting sequence */
+        XF_CHK_ERR(xf_output_port_unrouting(&mixer->output), XA_API_FATAL_INVALID_CMD_TYPE);
+        
+        /* ...complete unroute sequence */
+        xf_output_port_unroute_done(&mixer->output);
+
+        TRACE(INFO, _b("port is unrouted"));
+
+        return XA_NO_ERROR;
+    }
+
+    /* ...check destination port index is valid */
+    XF_CHK_ERR(i < XA_MIXER_MAX_TRACK_NUMBER, XA_API_FATAL_INVALID_CMD_TYPE);
+
+    /* ...input port flushing; check the track state is valid */
+    if (xa_track_test_flags(track, XA_TRACK_FLAG_ACTIVE | XA_TRACK_FLAG_PAUSED))
+    {
+        /* ...purge input port */
+        xf_input_port_purge(&track->input);
+
+        /* ...force clearing of ACTIVE and INPUT_SETUP condition */
+        xa_track_clear_flags(track, XA_TRACK_FLAG_ACTIVE | XA_TRACK_FLAG_PAUSED | XA_TRACK_FLAG_INPUT_SETUP);
+
+        /* ...and enter into idle state */
+        xa_track_set_flags(track, XA_TRACK_FLAG_IDLE);
+
+        /* ...other tracks may be waiting for this track, so force data processing */
+        if (xf_output_port_ready(&mixer->output))
+        {
+            xa_base_schedule(base, 0);
+        }
+
+        TRACE(INFO, _b("mixer[%p]::track[%u] flushed"), mixer, i);
+    }
+
+    /* ...complete message instantly (no propagation to output port) */
+    xf_response(m);
+
+    return XA_NO_ERROR;
+}
+
+/*******************************************************************************
+ * Codec API implementation
+ ******************************************************************************/
+
+/* ...buffers handling */
+static XA_ERRORCODE xa_mixer_memtab(XACodecBase *base, WORD32 idx, WORD32 type, WORD32 size, WORD32 align, u32 core)
+{
+    XAMixer    *mixer = (XAMixer *)base;
+    
+    if (type == XA_MEMTYPE_INPUT)
+    {
+        XATrack    *track = &mixer->track[idx];
+
+        /* ...input buffer allocation; check track number is valid */
+        XF_CHK_ERR(idx < XA_MIXER_MAX_TRACK_NUMBER, XA_API_FATAL_INVALID_CMD_TYPE);
+
+        /* ...create input port for a track */
+        XF_CHK_ERR(xf_input_port_init(&track->input, size, align, core) == 0, XA_API_FATAL_MEM_ALLOC);
+
+        /* ...set input port buffer */
+        XA_API(base, XA_API_CMD_SET_MEM_PTR, idx, track->input.buffer);
+
+        /* ...put track into idle state (will start as soon as we receive data) */
+        xa_track_set_flags(track, XA_TRACK_FLAG_IDLE);
+        
+        TRACE(INIT, _b("mixer[%p]::track[%u] input port created - size=%u"), mixer, idx, size);
+    }
+    else
+    {
+        /* ...output buffer allocation */
+        XF_CHK_ERR(type == XA_MEMTYPE_OUTPUT, XA_API_FATAL_INVALID_CMD_TYPE);
+
+        /* ...check port number is what we expect */
+        XF_CHK_ERR(idx == XA_MIXER_MAX_TRACK_NUMBER, XA_API_FATAL_INVALID_CMD_TYPE);
+
+        /* ...set mixer frame-size (in samples - for timestamp tracking) */
+        XA_API(base, XA_API_CMD_GET_CONFIG_PARAM, XA_MIXER_CONFIG_PARAM_FRAME_SIZE, &mixer->frame_size);
+        
+        /* ...create output port for a track */
+        XF_CHK_ERR(xf_output_port_init(&mixer->output, size) == 0, XA_API_FATAL_MEM_ALLOC);
+        
+        TRACE(INIT, _b("mixer[%p] output port created; size=%u"), mixer, size);
+    }
+
+    return XA_NO_ERROR;
+}
+
+/* ...preprocessing function */
+static XA_ERRORCODE xa_mixer_preprocess(XACodecBase *base)
+{
+    XAMixer        *mixer = (XAMixer *) base;
+    XATrack        *track;
+    u8              i;
+    XA_ERRORCODE    e = XA_MIXER_EXEC_NONFATAL_NO_DATA;
+
+    /* ...prepare output buffer */
+    if (!(base->state & XA_MIXER_FLAG_OUTPUT_SETUP))
+    {
+        void   *output;
+
+        /* ...set output buffer pointer */
+        if (base->state & XA_BASE_FLAG_RUNTIME_INIT)
+        {
+            /* ...no actual data processing during initialization */
+            return XA_NO_ERROR;
+        }
+        else if ((output = xf_output_port_data(&mixer->output)) == NULL)
+        {
+            /* ...no output buffer available */
+            return e;
+        }
+            
+        /* ...set output buffer pointer */
+        XA_API(base, XA_API_CMD_SET_MEM_PTR, XA_MIXER_MAX_TRACK_NUMBER, output);
+
+        /* ...mark output port is setup */
+        base->state ^= XA_MIXER_FLAG_OUTPUT_SETUP;
+    }
+    
+    /* ...check EOS */
+    if (!xa_mixer_check_active(mixer))
+    {
+        /* ...push EOS to output port */
+        xf_output_port_produce(&mixer->output, 0);
+        TRACE(INFO, _b("mixer[%p]::EOS generated"), mixer);
+    }
+
+    /* ...setup input buffer pointers and length */
+    for (track = &mixer->track[i = 0]; i < XA_MIXER_MAX_TRACK_NUMBER; i++, track++)
+    {
+        /* ...skip tracks that are not played */
+        if (!xa_track_test_flags(track, XA_TRACK_FLAG_ACTIVE))  continue;
+
+        /* ...set temporary mixing request */
+        e = XA_NO_ERROR;
+
+        /* ...skip the tracks that has been setup already */
+        if (xa_track_test_flags(track, XA_TRACK_FLAG_INPUT_SETUP))  continue;
+
+        /* ...found active track that hasn't been setup yet */
+        TRACE(INPUT, _b("track-%u: ts=%x vs mts=%x"), i, track->pts, mixer->pts);
+
+        /* ...if track presentation timestamp is in the future, do nothing yet really */
+        if (!xf_time_after(track->pts, mixer->pts))
+        {
+            u32     filled;
+            
+            /* ...take actual data from input port (mixer is always using internal buffer) */
+            if (!xf_input_port_fill(&track->input))
+            {
+                /* ...failed to prefill input buffer - no sufficient data yet */
+                return XA_MIXER_EXEC_NONFATAL_NO_DATA;
+            }
+            else
+            {
+                /* ...retrieve number of bytes available */
+                filled = xf_input_port_level(&track->input);
+            }
+
+            /* ...set total number of bytes we have in buffer */
+            XA_API(base, XA_API_CMD_SET_INPUT_BYTES, i, &filled);
+
+            /* ...actual data is to be played */
+            TRACE(INPUT, _b("track-%u: filled %u bytes"), i, filled);
+        }
+        
+        /* ...mark the track input is setup (emit silence or actual data) */
+        xa_track_set_flags(track, XA_TRACK_FLAG_INPUT_SETUP);
+    }
+
+    /* ...do mixing operation only when all active tracks are setup */
+    return e;
+}
+
+/* ...postprocessing function */
+static XA_ERRORCODE xa_mixer_postprocess(XACodecBase *base, int done)
+{
+    XAMixer        *mixer = (XAMixer *) base;
+    XATrack        *track;
+    u32             produced;
+    u32             consumed;
+    u8              i;
+
+    /* ...process execution stage transitions */
+    if (done)
+    {
+        if (base->state & XA_BASE_FLAG_RUNTIME_INIT)
+        {
+            /* ...failed to initialize runtime (can't be? - tbd)*/
+            BUG(1, _x("breakpoint"));
+        }
+        else if (base->state & XA_BASE_FLAG_EXECUTION)
+        {
+            /* ...enter into execution state; initialize runtime */
+            return XA_CHK(xa_mixer_prepare_runtime(mixer));
+        }
+        else
+        {
+            /* ...mixer operation is over (can't be? - tbd) */
+            BUG(1, _x("breakpoint"));
+        }
+    }
+
+    /* ...input ports maintenance; process all tracks */
+    for (track = &mixer->track[i = 0]; i < XA_MIXER_MAX_TRACK_NUMBER; i++, track++)
+    {
+        /* ...skip the tracks that are not runing */
+        if (!xa_track_test_flags(track, XA_TRACK_FLAG_ACTIVE))  continue;
+
+        /* ...clear input setup flag */
+        xa_track_clear_flags(track, XA_TRACK_FLAG_INPUT_SETUP);
+        
+        /* ...advance track presentation timestamp */
+        track->pts += mixer->frame_size;
+        
+        /* ...get total amount of consumed bytes */
+        XA_API(base, XA_API_CMD_GET_CURIDX_INPUT_BUF, i, &consumed);
+
+        TRACE(INPUT, _b("track-%u::postprocess(c=%u, ts=%x)"), i, consumed, track->pts);
+
+        /* ...consume that amount from input port (may be zero) */
+        xf_input_port_consume(&track->input, consumed);
+        
+        /* ...check if input port is done */
+        if (xf_input_port_done(&track->input))
+        {
+            /* ...input stream is over; return zero-length input back to caller */
+            xf_input_port_purge(&track->input);
+
+            /* ...switch to idle state */
+            xa_track_toggle_flags(track, XA_TRACK_FLAG_ACTIVE | XA_TRACK_FLAG_IDLE);
+
+            TRACE(INFO, _b("mixer[%p]::track[%u] completed"), mixer, i);
+        }
+    }
+
+    /* ...check if we have produced anything */
+    XA_API(base, XA_API_CMD_GET_OUTPUT_BYTES, XA_MIXER_MAX_TRACK_NUMBER, &produced);
+
+    TRACE(OUTPUT, _b("mixer[%p]::postprocess(p=%u, ts=%x, done=%u)"), mixer, produced, mixer->pts, done);
+
+    /* ...output port maintenance */
+    if (produced)
+    {
+        /* ...make sure we have produced exactly single frame */
+        BUG(produced != mixer->output.length, _x("Invalid length: %u != %u"), produced, mixer->output.length);
+        
+        /* ...steady mixing process; advance mixer presentation timestamp */
+        mixer->pts += mixer->frame_size;
+
+        /* ...push data from output port */
+        xf_output_port_produce(&mixer->output, produced);
+
+        /* ...clear output-setup condition */
+        base->state &= ~XA_MIXER_FLAG_OUTPUT_SETUP;
+    }    
+    
+    /* ...reschedule data processing if there is a pending output message */
+    if (xf_output_port_ready(&mixer->output))
+    {
+        /* ...schedule execution with respect to urgency */
+        xa_base_schedule(base, (produced ? mixer->frame_duration : 0));
+    }
+
+    return XA_NO_ERROR;
+}
+
+/*******************************************************************************
+ * Command-processing function
+ ******************************************************************************/
+
+/* ...command hooks */
+static XA_ERRORCODE (* const xa_mixer_cmd[])(XACodecBase *, xf_message_t *) =
+{
+    /* ...set-parameter - actually, same as in generic case */
+    [XF_OPCODE_TYPE(XF_SET_PARAM)] = xa_base_set_param,
+    [XF_OPCODE_TYPE(XF_GET_PARAM)] = xa_base_get_param,
+
+    /* ...output port routing/unrouting */
+    [XF_OPCODE_TYPE(XF_ROUTE)] = xa_mixer_port_route,
+    [XF_OPCODE_TYPE(XF_UNROUTE)] = xa_mixer_port_unroute,
+
+    /* ...input/output buffers processing */
+    [XF_OPCODE_TYPE(XF_EMPTY_THIS_BUFFER)] = xa_mixer_empty_this_buffer,
+    [XF_OPCODE_TYPE(XF_FILL_THIS_BUFFER)] = xa_mixer_fill_this_buffer,
+    [XF_OPCODE_TYPE(XF_FLUSH)] = xa_mixer_flush,
+
+    /* ...track control */
+    [XF_OPCODE_TYPE(XF_PAUSE)] = xa_mixer_pause,
+    [XF_OPCODE_TYPE(XF_RESUME)] = xa_mixer_resume,
+};
+
+/* ...total number of commands supported */
+#define XA_MIXER_CMD_NUM        (sizeof(xa_mixer_cmd) / sizeof(xa_mixer_cmd[0]))
+
+/*******************************************************************************
+ * Entry points
+ ******************************************************************************/
+
+/* ...mixer termination-state command processor */
+static int xa_mixer_terminate(xf_component_t *component, xf_message_t *m)
+{
+    XAMixer    *mixer = (XAMixer *) component;
+    u32         opcode = m->opcode;
+    
+    if (m == xf_output_port_control_msg(&mixer->output))
+    {
+        /* ...output port flushing complete; mark port is idle and terminate */
+        xf_output_port_flush_done(&mixer->output);
+        return -1;
+    }
+    else if (opcode == XF_FILL_THIS_BUFFER && xf_output_port_routed(&mixer->output))
+    {
+        /* ...output buffer returned by the sink component; ignore and keep waiting */
+        TRACE(OUTPUT, _b("collect output buffer"));
+        return 0;
+    }
+    else if (opcode == XF_UNREGISTER)
+    {
+        /* ...ignore subsequent unregister command/response */
+        return 0;
+    }
+    else
+    {
+        /* ...everything else is responded with generic failure */
+        xf_response_err(m);
+        return 0;
+    }
+}
+
+/* ...mixer class destructor */
+static int xa_mixer_destroy(xf_component_t *component, xf_message_t *m)
+{
+    XAMixer    *mixer = (XAMixer *) component;
+    u32         core = xf_component_core(component);
+    u32         i;
+    
+    /* ...destroy all inputs */
+    for (i = 0; i < XA_MIXER_MAX_TRACK_NUMBER; i++)
+    {
+        xf_input_port_destroy(&mixer->track[i].input, core);
+    }
+
+    /* ...destroy output port */
+    xf_output_port_destroy(&mixer->output, core);
+
+    /* ...destroy base object */
+    xa_base_destroy(&mixer->base, XF_MM(sizeof(*mixer)), core);
+
+    TRACE(INIT, _b("mixer[%p] destroyed"), mixer);
+
+    return 0;
+}
+
+/* ...mixer class first-stage destructor */
+static int xa_mixer_cleanup(xf_component_t *component, xf_message_t *m)
+{
+    XAMixer    *mixer = (XAMixer *) component;
+    u32         i;
+
+    /* ...complete message with error result code */
+    xf_response_err(m);
+    
+    /* ...cancel internal scheduling message if needed */
+    xa_base_cancel(&mixer->base);    
+    
+    /* ...purge all input ports (specify "unregister"? - don't know yet - tbd) */
+    for (i = 0; i < XA_MIXER_MAX_TRACK_NUMBER; i++)
+    {
+        xf_input_port_purge(&mixer->track[i].input);
+    }
+
+    /* ...flush output port */
+    if (xf_output_port_flush(&mixer->output, XF_FLUSH))
+    {
+        /* ...flushing sequence is not needed; destroy mixer */
+        return xa_mixer_destroy(component, NULL);
+    }
+    else
+    {
+        /* ...wait until output port is cleaned; adjust component hooks */
+        component->entry = xa_mixer_terminate;
+        component->exit = xa_mixer_destroy;
+        
+        TRACE(INIT, _b("mixer[%p] cleanup sequence started"), mixer);
+
+        /* ...indicate that second stage is required */
+        return 1;
+    }
+}
+
+/* ...mixer class factory */
+xf_component_t * xa_mixer_factory(u32 core, xa_codec_func_t process)
+{
+    XAMixer    *mixer;
+
+    /* ...construct generic audio component */
+    XF_CHK_ERR(mixer = (XAMixer *)xa_base_factory(core, XF_MM(sizeof(*mixer)), process), NULL);
+
+    /* ...set generic codec API */
+    mixer->base.memtab = xa_mixer_memtab;
+    mixer->base.preprocess = xa_mixer_preprocess;
+    mixer->base.postprocess = xa_mixer_postprocess;
+
+    /* ...set message-processing table */
+    mixer->base.command = xa_mixer_cmd;
+    mixer->base.command_num = XA_MIXER_CMD_NUM;
+
+    /* ...set component destructor hook */
+    mixer->base.component.exit = xa_mixer_cleanup;
+    
+    TRACE(INIT, _b("Mixer[%p] created"), mixer);
+
+    /* ...return handle to component */
+    return (xf_component_t *) mixer;
+}
diff --git a/hifi/xaf/hifi-dpf/build_hikey/Makefile b/hifi/xaf/hifi-dpf/build_hikey/Makefile
new file mode 100644
index 0000000..e1980a0
--- /dev/null
+++ b/hifi/xaf/hifi-dpf/build_hikey/Makefile
@@ -0,0 +1,135 @@
+#
+# Copyright (C) 2018 Cadence Design Systems, Inc.
+# 
+# Permission is hereby granted, free of charge, to any person obtaining
+# a copy of this software and associated documentation files (the
+# "Software"), to use this Software with Cadence processor cores only and 
+# not with any other processors and platforms, subject to
+# the following conditions:
+# 
+# The above copyright notice and this permission notice shall be included
+# in all copies or substantial portions of the Software.
+# 
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+# IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+# CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+# TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+# SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+#
+
+
+.PHONY: all install clean HIKEY960
+
+NOSTRIP = 1
+XF_TRACE = 1
+
+ROOTDIR = ..
+CODEC_NAME = hikey
+
+PLUGINO2OBJS =
+PLUGINLIBS =
+PLUGININCLUDES =
+
+XA_MP3_DECODER ?= 0
+XA_VORBIS_DECODER ?= 1
+XA_MIXER 	   ?= 1
+XA_PCM 	   ?= 1
+
+
+vpath %.c $(ROOTDIR)/ipc/xt-shmem/hikey
+vpath %.c $(ROOTDIR)/ipc/xt-shmem
+vpath %.c $(ROOTDIR)/core/util
+vpath %.c $(ROOTDIR)/core/util/gdbstub
+vpath %.c $(ROOTDIR)/core
+vpath %.c $(ROOTDIR)/app
+vpath %.c $(ROOTDIR)/audio
+
+vpath %.S $(ROOTDIR)/ipc/xt-shmem/hikey
+vpath %.S $(ROOTDIR)/core/util/gdbstub
+
+vpath %.c $(ROOTDIR)/plugins/cadence/mixer
+
+LIBXAFASMOBJS = \
+			reset.o \
+			int_vector.o \
+			arch_hifi330.o \
+			gdbstub-entry.o
+
+LIBXAFO2OBJS = \
+            cpu_c.o \
+			dsp_debug.o \
+			dsp_comm.o \
+			mutex.o \
+			rbtree.o \
+			xf-core.o \
+			xf-io.o \
+			xf-mem.o \
+			xf-msg.o \
+			xf-sched.o \
+			xa-factory.o \
+			xf-shmem.o \
+			tinyvprintf.o \
+			xf-isr.o \
+			gdbstub.o \
+			xa-class-base.o \
+			xa-class-audio-codec.o \
+			xa-class-mixer.o \
+			xf-main.o 
+
+ifeq ($(XF_TRACE),1)
+  CFLAGS         += -DXF_TRACE=1
+  CFLAGS         += -DXAF_PROFILE_DSP=1
+endif
+
+ifeq ($(XA_MP3_DECODER),1)
+  vpath %.c $(ROOTDIR)/plugins/cadence/mp3_dec
+  CFLAGS         += -DXA_MP3_DECODER=1
+  PLUGINO2OBJS   += xa-mp3-decoder.o
+  PLUGINLIBS     += $(ROOTDIR)/plugins/cadence/mp3_dec/lib/hifi2/xa_mp3_dec.a 
+  PLUGININCLUDES += -I$(ROOTDIR)/plugins/cadence/mp3_dec
+endif
+
+ifeq ($(XA_PCM),1)
+  vpath %.c $(ROOTDIR)/plugins/cadence/pcm_proc
+  CFLAGS         += -DXA_PCM=1
+  PLUGINO2OBJS   += xa-pcm.o
+  PLUGINLIBS     += 
+  PLUGININCLUDES += -I$(ROOTDIR)/plugins/cadence/pcm_proc
+endif  
+
+ifeq ($(XA_VORBIS_DECODER),1)
+  vpath %.c $(ROOTDIR)/plugins/cadence/vorbis_dec
+  CFLAGS         += -DXA_VORBIS_DECODER=1
+  PLUGINO2OBJS   += xa-vorbis-decoder.o
+  PLUGINLIBS     += $(ROOTDIR)/plugins/cadence/vorbis_dec/lib/hifi3/xa_vorbis_dec.a
+  PLUGININCLUDES += -I$(ROOTDIR)/plugins/cadence/vorbis_dec
+endif
+
+ifeq ($(XA_MIXER),1)
+  vpath %.c $(ROOTDIR)/plugins/cadence/mixer
+  CFLAGS         += -DXA_MIXER=1
+  PLUGINO2OBJS   += xa-mixer.o
+  PLUGINLIBS     += 
+  PLUGININCLUDES += -I$(ROOTDIR)/plugins/cadence/mixer
+endif
+
+LIBO2OBJS = $(LIBXAFO2OBJS) $(LIBMP3DECO2OBJS) $(LIBMIXERO2OBJS) $(PLUGINO2OBJS)
+LIBASMOBJS = $(LIBXAFASMOBJS)
+ 
+INCLUDES += \
+    -I$(ROOTDIR)/include \
+    -I$(ROOTDIR)/include/audio \
+    -I$(ROOTDIR)/include/sys/xt-shmem \
+	-I$(ROOTDIR)/include/sys/xt-shmem/board-hikey \
+    -I$(ROOTDIR)/plugins/cadence/mp3_dec 
+    
+INCLUDES += $(PLUGININCLUDES)
+
+LDFLAGS += -nostdlib -lhal -lhandlers-board -lc -lgcc 
+LDFLAGS += -mlsp="./hifi_hikey_lsp"
+
+HIKEY960: $(CODEC_NAME) 
+
+include $(ROOTDIR)/build_hikey/common.mk
diff --git a/hifi/xaf/hifi-dpf/build_hikey/common.mk b/hifi/xaf/hifi-dpf/build_hikey/common.mk
new file mode 100644
index 0000000..ef4429e
--- /dev/null
+++ b/hifi/xaf/hifi-dpf/build_hikey/common.mk
@@ -0,0 +1,156 @@
+#
+# Copyright (C) 2018 Cadence Design Systems, Inc.
+# 
+# Permission is hereby granted, free of charge, to any person obtaining
+# a copy of this software and associated documentation files (the
+# "Software"), to use this Software with Cadence processor cores only and 
+# not with any other processors and platforms, subject to
+# the following conditions:
+# 
+# The above copyright notice and this permission notice shall be included
+# in all copies or substantial portions of the Software.
+# 
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+# IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+# CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+# TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+# SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+#
+
+QUIET =
+MAPFILE  = map_$(CODEC_NAME).txt
+LDSCRIPT = ldscript_$(CODEC_NAME).txt
+SYMFILE  = symbols_$(CODEC_NAME).txt
+ELFTOBIN = $(ROOTDIR)/build_hikey/tools/elftobin.sh
+
+ifeq ($(CPU), gcc)
+    S = /
+    AR = ar
+    OBJCOPY = objcopy
+    CC = gcc
+    CXX = g++
+    CFLAGS += -fno-exceptions -DCSTUB=1
+    CFLAGS += -ffloat-store 
+    CFLAGS += -DHIFI3_CSTUB
+    RM = rm -f
+    RM_R = rm -rf
+    MKPATH = mkdir -p
+    CP = cp -f
+    INCLUDES += \
+    -I$(ROOTDIR)/test/include
+else
+    AR = xt-ar $(XTCORE)
+    OBJCOPY = xt-objcopy $(XTCORE)
+    CC = xt-xcc $(XTCORE)
+    CXX = xt-xc++ $(XTCORE)
+    ISS = xt-run $(XTCORE)
+    CONFIGDIR := $(shell $(ISS) --show-config=config)
+    include $(CONFIGDIR)/misc/hostenv.mk
+    #CFLAGS += -Wall 
+    #CFLAGS += -Werror 
+    #CFLAGS += -mno-mul16 -mno-mul32 -mno-div32 -fsigned-char -fno-exceptions -mlongcalls -INLINE:requested -mcoproc -fno-zero-initialized-in-bss
+    CFLAGS += -mlongcalls -mtext-section-literals
+    ASMFLAGS += -mlongcalls
+endif
+
+OBJDIR = objs$(S)$(CODEC_NAME)
+LIBDIR = $(ROOTDIR)$(S)lib
+
+OBJ_LIBO2OBJS = $(addprefix $(OBJDIR)/,$(LIBO2OBJS))
+OBJ_LIBOSOBJS = $(addprefix $(OBJDIR)/,$(LIBOSOBJS))
+OBJ_LIBO2CPPOBJS = $(addprefix $(OBJDIR)/,$(LIBO2CPPOBJS))
+OBJ_LIBOSCPPOBJS = $(addprefix $(OBJDIR)/,$(LIBOSCPPOBJS))
+OBJ_LIBASMOBJS = $(addprefix $(OBJDIR)/,$(LIBASMOBJS))
+
+TEMPOBJ = temp.o    
+
+ifeq ($(CPU), gcc)
+    LIBOBJ   = $(OBJDIR)/xgcc_$(CODEC_NAME).o
+    LIB      = xgcc_$(CODEC_NAME).img
+else
+    LIBOBJ   = $(OBJDIR)/xa_$(CODEC_NAME).o
+    LIB      = xa_$(CODEC_NAME).img
+endif
+
+CFLAGS += \
+    $(EXTRA_CFLAGS) $(EXTRA_CFLAGS2)
+
+
+ifeq ($(DEBUG),1)
+  NOSTRIP = 1
+  OPT_O2 = -O0 -g 
+  OPT_OS = -O0 -g
+  CFLAGS += -DDEBUG
+else
+ifeq ($(CPU), gcc)
+  OPT_O2 = -O2 -g 
+  OPT_OS = -O2 -g 
+else
+  #OPT_O2 = -O3 -LNO:simd 
+  OPT_O2 = -g -O2 
+  OPT_OS = -Os 
+endif
+endif
+
+OPT_ASM = -g -Wa,--gdwarf-2
+
+
+all: $(OBJDIR) $(LIB) 
+$(CODEC_NAME): $(OBJDIR) $(LIB) 
+
+install: $(LIB)
+	@echo "Installing $(LIB)"
+	$(QUIET) -$(MKPATH) "$(LIBDIR)"
+	$(QUIET) $(CP) $(LIB) "$(LIBDIR)"
+
+$(OBJDIR):
+	$(QUIET) -$(MKPATH) $@
+
+ifeq ($(NOSTRIP), 1)
+$(LIBOBJ): $(OBJ_LIBO2OBJS) $(OBJ_LIBOSOBJS) $(OBJ_LIBO2CPPOBJS) $(OBJ_LIBOSCPPOBJS) $(OBJ_LIBASMOBJS) $(PLUGINLIBS)
+	@echo "Linking Objects"
+	$(QUIET) $(CXX) -c $(OPT_O2) $(CFLAGS) -o $@ $^ \
+	-Wl,-Map,$(MAPFILE) --no-standard-libraries \
+	$(LDFLAGS) $(EXTRA_LDFLAGS)
+else
+$(LIBOBJ): $(OBJ_LIBO2OBJS) $(OBJ_LIBOSOBJS) $(OBJ_LIBO2CPPOBJS) $(OBJ_LIBOSCPPOBJS) $(OBJ_LIBASMOBJS) $(PLUGINLIBS)
+	@echo "Linking Objects"
+	$(QUIET) $(CXX) -c $(OPT_O2) $(CFLAGS) -o $@ $^ \
+	-Wl,-Map,$(MAPFILE) --no-standard-libraries \
+	-Wl,--retain-symbols-file,$(SYMFILE) \
+	$(IPA_FLAGS) $(LDFLAGS) $(EXTRA_LDFLAGS)
+	$(QUIET) $(OBJCOPY) --keep-global-symbols=$(SYMFILE) $@ $(TEMPOBJ)
+	$(QUIET) $(OBJCOPY) --strip-unneeded $(TEMPOBJ) $@
+	$(QUIET) -$(RM) $(TEMPOBJ)
+endif 
+
+
+$(OBJ_LIBO2OBJS): $(OBJDIR)/%.o: %.c
+	@echo "Compiling $<"
+	$(QUIET) $(CC) -o $@ $(OPT_O2) $(CFLAGS) $(INCLUDES) -c $<
+	
+$(OBJ_LIBOSOBJS): $(OBJDIR)/%.o: %.c
+	@echo "Compiling $<"
+	$(QUIET) $(CC) -o $@ $(OPT_OS) $(CFLAGS) $(INCLUDES) -c $<
+	
+$(OBJ_LIBO2CPPOBJS): $(OBJDIR)/%.o: %.cpp
+	@echo "Compiling $<"
+	$(QUIET) $(CXX) -o $@ $(OPT_O2) $(CFLAGS) $(INCLUDES) -c $<
+	
+$(OBJ_LIBOSCPPOBJS): $(OBJDIR)/%.o: %.cpp
+	@echo "Compiling $<"
+	$(QUIET) $(CXX) -o $@ $(OPT_OS) $(CFLAGS) $(INCLUDES) -c $<
+
+$(OBJ_LIBASMOBJS): $(OBJDIR)/%.o: %.S
+	@echo "Compiling $<"
+	$(QUIET) $(CC) -o $@ $(OPT_ASM) $(ASMFLAGS) $(INCLUDES) -c $<
+	
+$(LIB): %.img: $(OBJDIR)/%.o
+	@echo "Creating Library $@"
+	$(ELFTOBIN) $< $@
+
+clean:
+	-$(RM) $(LIB) $(MAPFILE)
+	-$(RM_R) $(OBJDIR) $(LIBDIR) 
diff --git a/hifi/xaf/hifi-dpf/build_hikey/hifi_hikey_lsp/ldscripts/elf32xtensa.x b/hifi/xaf/hifi-dpf/build_hikey/hifi_hikey_lsp/ldscripts/elf32xtensa.x
new file mode 100644
index 0000000..67507ed
--- /dev/null
+++ b/hifi/xaf/hifi-dpf/build_hikey/hifi_hikey_lsp/ldscripts/elf32xtensa.x
@@ -0,0 +1,827 @@
+/* This linker script generated from xt-genldscripts.tpp for LSP hifi_hikey_lsp */
+/* Linker Script for default link */
+MEMORY
+{
+  sram0_seg :                         	org = 0xC0000000, len = 0x408000
+  old_vlpd_seg :                      	org = 0xC0408000, len = 0x10000
+  efr_fr_hr_vlpd_seg :                	org = 0xC0418000, len = 0x10000
+  amr_vlpd_seg :                      	org = 0xC0428000, len = 0x10000
+  amrwb_vlpd_seg :                    	org = 0xC0438000, len = 0x10000
+  evrc_evrcb_vlpt_seg :               	org = 0xC0448000, len = 0x48000
+  efr_fr_hr_vlpt_seg :                	org = 0xC0490000, len = 0x30000
+  amr_vlpt_seg :                      	org = 0xC04C0000, len = 0x20000
+  amrwb_vlpt_seg :                    	org = 0xC04E0000, len = 0x30000
+  vlpt_seg :                          	org = 0xC0510000, len = 0x48000
+  vlpd_seg :                          	org = 0xC0558000, len = 0x20000
+  ulpp_seg :                          	org = 0xC0578000, len = 0x40000
+  dtsv3_seg :                         	org = 0xC05B8000, len = 0x20000
+  dtsv4_seg :                         	org = 0xC05D8000, len = 0x28000
+  dram0_0_seg :                       	org = 0xE8058000, len = 0x28000
+  iram0_0_seg :                       	org = 0xE8080000, len = 0x300
+  iram0_1_seg :                       	org = 0xE8080300, len = 0x100
+  iram0_2_seg :                       	org = 0xE8080400, len = 0x178
+  iram0_3_seg :                       	org = 0xE8080578, len = 0x8
+  iram0_4_seg :                       	org = 0xE8080580, len = 0x38
+  iram0_5_seg :                       	org = 0xE80805B8, len = 0x8
+  iram0_6_seg :                       	org = 0xE80805C0, len = 0x38
+  iram0_7_seg :                       	org = 0xE80805F8, len = 0x8
+  iram0_8_seg :                       	org = 0xE8080600, len = 0x38
+  iram0_9_seg :                       	org = 0xE8080638, len = 0x8
+  iram0_10_seg :                      	org = 0xE8080640, len = 0x38
+  iram0_11_seg :                      	org = 0xE8080678, len = 0x48
+  iram0_12_seg :                      	org = 0xE80806C0, len = 0x38
+  iram0_13_seg :                      	org = 0xE80806F8, len = 0x8
+  iram0_14_seg :                      	org = 0xE8080700, len = 0x38
+  iram0_15_seg :                      	org = 0xE8080738, len = 0x8
+  iram0_16_seg :                      	org = 0xE8080740, len = 0x38
+  iram0_17_seg :                      	org = 0xE8080778, len = 0x48
+  iram0_18_seg :                      	org = 0xE80807C0, len = 0x40
+  iram0_19_seg :                      	org = 0xE8080800, len = 0xB800
+}
+
+PHDRS
+{
+  sram0_phdr PT_LOAD;
+  sram0_bss_phdr PT_LOAD;
+  old_vlpd_phdr PT_LOAD;
+  old_vlpd_bss_phdr PT_LOAD;
+  efr_fr_hr_vlpd_phdr PT_LOAD;
+  efr_fr_hr_vlpd_bss_phdr PT_LOAD;
+  amr_vlpd_phdr PT_LOAD;
+  amr_vlpd_bss_phdr PT_LOAD;
+  amrwb_vlpd_phdr PT_LOAD;
+  amrwb_vlpd_bss_phdr PT_LOAD;
+  evrc_evrcb_vlpt_phdr PT_LOAD;
+  efr_fr_hr_vlpt_phdr PT_LOAD;
+  amr_vlpt_phdr PT_LOAD;
+  amrwb_vlpt_phdr PT_LOAD;
+  vlpt_phdr PT_LOAD;
+  vlpd_phdr PT_LOAD;
+  ulpp_phdr PT_LOAD;
+  ulpp_bss_phdr PT_LOAD;
+  dtsv3_phdr PT_LOAD;
+  dtsv3_bss_phdr PT_LOAD;
+  dtsv4_phdr PT_LOAD;
+  dtsv4_bss_phdr PT_LOAD;
+  dram0_0_phdr PT_LOAD;
+  dram0_0_bss_phdr PT_LOAD;
+  iram0_0_phdr PT_LOAD;
+  iram0_1_phdr PT_LOAD;
+  iram0_2_phdr PT_LOAD;
+  iram0_3_phdr PT_LOAD;
+  iram0_4_phdr PT_LOAD;
+  iram0_5_phdr PT_LOAD;
+  iram0_6_phdr PT_LOAD;
+  iram0_7_phdr PT_LOAD;
+  iram0_8_phdr PT_LOAD;
+  iram0_9_phdr PT_LOAD;
+  iram0_10_phdr PT_LOAD;
+  iram0_11_phdr PT_LOAD;
+  iram0_12_phdr PT_LOAD;
+  iram0_13_phdr PT_LOAD;
+  iram0_14_phdr PT_LOAD;
+  iram0_15_phdr PT_LOAD;
+  iram0_16_phdr PT_LOAD;
+  iram0_17_phdr PT_LOAD;
+  iram0_18_phdr PT_LOAD;
+  iram0_19_phdr PT_LOAD;
+}
+
+
+/*  Default entry point:  */
+ENTRY(_ResetVector)
+
+/*  Memory boundary addresses:  */
+_memmap_mem_iram0_start = 0xe8080000;
+_memmap_mem_iram0_end   = 0xe808c000;
+_memmap_mem_dram0_start = 0xe8058000;
+_memmap_mem_dram0_end   = 0xe8080000;
+_memmap_mem_sram_start = 0xc0000000;
+_memmap_mem_sram_end   = 0xc0600000;
+
+/*  Memory segment boundary addresses:  */
+_memmap_seg_sram0_start = 0xc0000000;
+_memmap_seg_sram0_max   = 0xc0408000;
+_memmap_seg_old_vlpd_start = 0xc0408000;
+_memmap_seg_old_vlpd_max   = 0xc0418000;
+_memmap_seg_efr_fr_hr_vlpd_start = 0xc0418000;
+_memmap_seg_efr_fr_hr_vlpd_max   = 0xc0428000;
+_memmap_seg_amr_vlpd_start = 0xc0428000;
+_memmap_seg_amr_vlpd_max   = 0xc0438000;
+_memmap_seg_amrwb_vlpd_start = 0xc0438000;
+_memmap_seg_amrwb_vlpd_max   = 0xc0448000;
+_memmap_seg_evrc_evrcb_vlpt_start = 0xc0448000;
+_memmap_seg_evrc_evrcb_vlpt_max   = 0xc0490000;
+_memmap_seg_efr_fr_hr_vlpt_start = 0xc0490000;
+_memmap_seg_efr_fr_hr_vlpt_max   = 0xc04c0000;
+_memmap_seg_amr_vlpt_start = 0xc04c0000;
+_memmap_seg_amr_vlpt_max   = 0xc04e0000;
+_memmap_seg_amrwb_vlpt_start = 0xc04e0000;
+_memmap_seg_amrwb_vlpt_max   = 0xc0510000;
+_memmap_seg_vlpt_start = 0xc0510000;
+_memmap_seg_vlpt_max   = 0xc0558000;
+_memmap_seg_vlpd_start = 0xc0558000;
+_memmap_seg_vlpd_max   = 0xc0578000;
+_memmap_seg_ulpp_start = 0xc0578000;
+_memmap_seg_ulpp_max   = 0xc05b8000;
+_memmap_seg_dtsv3_start = 0xc05b8000;
+_memmap_seg_dtsv3_max   = 0xc05d8000;
+_memmap_seg_dtsv4_start = 0xc05d8000;
+_memmap_seg_dtsv4_max   = 0xc0600000;
+_memmap_seg_dram0_0_start = 0xe8058000;
+_memmap_seg_dram0_0_max   = 0xe8080000;
+_memmap_seg_iram0_0_start = 0xe8080000;
+_memmap_seg_iram0_0_max   = 0xe8080300;
+_memmap_seg_iram0_1_start = 0xe8080300;
+_memmap_seg_iram0_1_max   = 0xe8080400;
+_memmap_seg_iram0_2_start = 0xe8080400;
+_memmap_seg_iram0_2_max   = 0xe8080578;
+_memmap_seg_iram0_3_start = 0xe8080578;
+_memmap_seg_iram0_3_max   = 0xe8080580;
+_memmap_seg_iram0_4_start = 0xe8080580;
+_memmap_seg_iram0_4_max   = 0xe80805b8;
+_memmap_seg_iram0_5_start = 0xe80805b8;
+_memmap_seg_iram0_5_max   = 0xe80805c0;
+_memmap_seg_iram0_6_start = 0xe80805c0;
+_memmap_seg_iram0_6_max   = 0xe80805f8;
+_memmap_seg_iram0_7_start = 0xe80805f8;
+_memmap_seg_iram0_7_max   = 0xe8080600;
+_memmap_seg_iram0_8_start = 0xe8080600;
+_memmap_seg_iram0_8_max   = 0xe8080638;
+_memmap_seg_iram0_9_start = 0xe8080638;
+_memmap_seg_iram0_9_max   = 0xe8080640;
+_memmap_seg_iram0_10_start = 0xe8080640;
+_memmap_seg_iram0_10_max   = 0xe8080678;
+_memmap_seg_iram0_11_start = 0xe8080678;
+_memmap_seg_iram0_11_max   = 0xe80806c0;
+_memmap_seg_iram0_12_start = 0xe80806c0;
+_memmap_seg_iram0_12_max   = 0xe80806f8;
+_memmap_seg_iram0_13_start = 0xe80806f8;
+_memmap_seg_iram0_13_max   = 0xe8080700;
+_memmap_seg_iram0_14_start = 0xe8080700;
+_memmap_seg_iram0_14_max   = 0xe8080738;
+_memmap_seg_iram0_15_start = 0xe8080738;
+_memmap_seg_iram0_15_max   = 0xe8080740;
+_memmap_seg_iram0_16_start = 0xe8080740;
+_memmap_seg_iram0_16_max   = 0xe8080778;
+_memmap_seg_iram0_17_start = 0xe8080778;
+_memmap_seg_iram0_17_max   = 0xe80807c0;
+_memmap_seg_iram0_18_start = 0xe80807c0;
+_memmap_seg_iram0_18_max   = 0xe8080800;
+_memmap_seg_iram0_19_start = 0xe8080800;
+_memmap_seg_iram0_19_max   = 0xe808c000;
+
+_rom_store_table = 0;
+PROVIDE(_memmap_vecbase_reset = 0xe8080400);
+PROVIDE(_memmap_reset_vector = 0xe8080000);
+/* Various memory-map dependent cache attribute settings: */
+_memmap_cacheattr_wb_base = 0x44000000;
+_memmap_cacheattr_wt_base = 0x11000000;
+_memmap_cacheattr_bp_base = 0x22000000;
+_memmap_cacheattr_unused_mask = 0x00FFFFFF;
+_memmap_cacheattr_wb_trapnull = 0x4422222F;
+_memmap_cacheattr_wba_trapnull = 0x4422222F;
+_memmap_cacheattr_wbna_trapnull = 0x5522222F;
+_memmap_cacheattr_wt_trapnull = 0x1122222F;
+_memmap_cacheattr_bp_trapnull = 0x2222222F;
+_memmap_cacheattr_wb_strict = 0x44FFFFFF;
+_memmap_cacheattr_wt_strict = 0x11FFFFFF;
+_memmap_cacheattr_bp_strict = 0x22FFFFFF;
+_memmap_cacheattr_wb_allvalid = 0x44222222;
+_memmap_cacheattr_wt_allvalid = 0x11222222;
+_memmap_cacheattr_bp_allvalid = 0x22222222;
+PROVIDE(_memmap_cacheattr_reset = _memmap_cacheattr_wb_trapnull);
+
+SECTIONS
+{
+
+  .vlpd.rodata : ALIGN(4)
+  {
+    _vlpd_rodata_start = ABSOLUTE(.);
+    *(.vlpd.rodata)
+    _vlpd_rodata_end = ABSOLUTE(.);
+  } >old_vlpd_seg :old_vlpd_phdr
+
+  .vlpd.data : ALIGN(4)
+  {
+    _vlpd_data_start = ABSOLUTE(.);
+    *(.vlpd.data)
+    _vlpd_data_end = ABSOLUTE(.);
+  } >old_vlpd_seg :old_vlpd_phdr
+
+  .vlpd.bss (NOLOAD) : ALIGN(8)
+  {
+    . = ALIGN (8);
+    _vlpd_bss_start = ABSOLUTE(.);
+    *(.vlpd.bss)
+    . = ALIGN (8);
+    _vlpd_bss_end = ABSOLUTE(.);
+    _memmap_seg_old_vlpd_end = ALIGN(0x8);
+  } >old_vlpd_seg :old_vlpd_bss_phdr
+
+  .efr_fr_hr_vlpd.rodata : ALIGN(4)
+  {
+    _efr_fr_hr_vlpd_rodata_start = ABSOLUTE(.);
+    *(.efr_fr_hr_vlpd.rodata)
+    _efr_fr_hr_vlpd_rodata_end = ABSOLUTE(.);
+  } >efr_fr_hr_vlpd_seg :efr_fr_hr_vlpd_phdr
+
+  .efr_fr_hr_vlpd.data : ALIGN(4)
+  {
+    _efr_fr_hr_vlpd_data_start = ABSOLUTE(.);
+    *(.efr_fr_hr_vlpd.data)
+    _efr_fr_hr_vlpd_data_end = ABSOLUTE(.);
+  } >efr_fr_hr_vlpd_seg :efr_fr_hr_vlpd_phdr
+
+  .efr_fr_hr_vlpd.bss (NOLOAD) : ALIGN(8)
+  {
+    . = ALIGN (8);
+    _efr_fr_hr_vlpd_bss_start = ABSOLUTE(.);
+    *(.efr_fr_hr_vlpd.bss)
+    . = ALIGN (8);
+    _efr_fr_hr_vlpd_bss_end = ABSOLUTE(.);
+    _memmap_seg_efr_fr_hr_vlpd_end = ALIGN(0x8);
+  } >efr_fr_hr_vlpd_seg :efr_fr_hr_vlpd_bss_phdr
+
+  .amr_vlpd.rodata : ALIGN(4)
+  {
+    _amr_vlpd_rodata_start = ABSOLUTE(.);
+    *(.amr_vlpd.rodata)
+    _amr_vlpd_rodata_end = ABSOLUTE(.);
+  } >amr_vlpd_seg :amr_vlpd_phdr
+
+  .amr_vlpd.data : ALIGN(4)
+  {
+    _amr_vlpd_data_start = ABSOLUTE(.);
+    *(.amr_vlpd.data)
+    _amr_vlpd_data_end = ABSOLUTE(.);
+  } >amr_vlpd_seg :amr_vlpd_phdr
+
+  .amr_vlpd.bss (NOLOAD) : ALIGN(8)
+  {
+    . = ALIGN (8);
+    _amr_vlpd_bss_start = ABSOLUTE(.);
+    *(.amr_vlpd.bss)
+    . = ALIGN (8);
+    _amr_vlpd_bss_end = ABSOLUTE(.);
+    _memmap_seg_amr_vlpd_end = ALIGN(0x8);
+  } >amr_vlpd_seg :amr_vlpd_bss_phdr
+
+  .amrwb_vlpd.rodata : ALIGN(4)
+  {
+    _amrwb_vlpd_rodata_start = ABSOLUTE(.);
+    *(.amrwb_vlpd.rodata)
+    _amrwb_vlpd_rodata_end = ABSOLUTE(.);
+  } >amrwb_vlpd_seg :amrwb_vlpd_phdr
+
+  .amrwb_vlpd.data : ALIGN(4)
+  {
+    _amrwb_vlpd_data_start = ABSOLUTE(.);
+    *(.amrwb_vlpd.data)
+    _amrwb_vlpd_data_end = ABSOLUTE(.);
+  } >amrwb_vlpd_seg :amrwb_vlpd_phdr
+
+  .amrwb_vlpd.bss (NOLOAD) : ALIGN(8)
+  {
+    . = ALIGN (8);
+    _amrwb_vlpd_bss_start = ABSOLUTE(.);
+    *(.amrwb_vlpd.bss)
+    . = ALIGN (8);
+    _amrwb_vlpd_bss_end = ABSOLUTE(.);
+    _memmap_seg_amrwb_vlpd_end = ALIGN(0x8);
+  } >amrwb_vlpd_seg :amrwb_vlpd_bss_phdr
+
+  .evrc_evrcb_vlpt.text : ALIGN(4)
+  {
+    _evrc_evrcb_vlpt_text_start = ABSOLUTE(.);
+    *(.evrc_evrcb_vlpt.literal .evrc_evrcb_vlpt.text)
+    _evrc_evrcb_vlpt_text_end = ABSOLUTE(.);
+    _memmap_seg_evrc_evrcb_vlpt_end = ALIGN(0x8);
+  } >evrc_evrcb_vlpt_seg :evrc_evrcb_vlpt_phdr
+
+  .efr_fr_hr_vlpt.text : ALIGN(4)
+  {
+    _efr_fr_hr_vlpt_text_start = ABSOLUTE(.);
+    *(.efr_fr_hr_vlpt.literal .efr_fr_hr_vlpt.text)
+    _efr_fr_hr_vlpt_text_end = ABSOLUTE(.);
+    _memmap_seg_efr_fr_hr_vlpt_end = ALIGN(0x8);
+  } >efr_fr_hr_vlpt_seg :efr_fr_hr_vlpt_phdr
+
+  .amr_vlpt.text : ALIGN(4)
+  {
+    _amr_vlpt_text_start = ABSOLUTE(.);
+    *(.amr_vlpt.literal .amr_vlpt.text)
+    _amr_vlpt_text_end = ABSOLUTE(.);
+    _memmap_seg_amr_vlpt_end = ALIGN(0x8);
+  } >amr_vlpt_seg :amr_vlpt_phdr
+
+  .amrwb_vlpt.text : ALIGN(4)
+  {
+    _amrwb_vlpt_text_start = ABSOLUTE(.);
+    *(.amrwb_vlpt.literal .amrwb_vlpt.text)
+    _amrwb_vlpt_text_end = ABSOLUTE(.);
+    _memmap_seg_amrwb_vlpt_end = ALIGN(0x8);
+  } >amrwb_vlpt_seg :amrwb_vlpt_phdr
+
+  .vlpt.text : ALIGN(4)
+  {
+    _vlpt_text_start = ABSOLUTE(.);
+    *(.vlpt.literal .vlpt.text)
+    _vlpt_text_end = ABSOLUTE(.);
+    _memmap_seg_vlpt_end = ALIGN(0x8);
+  } >vlpt_seg :vlpt_phdr
+
+  .low_power_dyn_alloc : ALIGN(4)
+  {
+    _low_power_dyn_alloc_start = ABSOLUTE(.);
+    *(.low_power_dyn_alloc)
+    _low_power_dyn_alloc_end = ABSOLUTE(.);
+    _memmap_seg_vlpd_end = ALIGN(0x8);
+  } >vlpd_seg :vlpd_phdr
+
+  .ulpp.rodata : ALIGN(4)
+  {
+    _ulpp_rodata_start = ABSOLUTE(.);
+    *(.ulpp.rodata)
+    _ulpp_rodata_end = ABSOLUTE(.);
+  } >ulpp_seg :ulpp_phdr
+
+  .ulpp.data : ALIGN(4)
+  {
+    _ulpp_data_start = ABSOLUTE(.);
+    *(.ulpp.data)
+    _ulpp_data_end = ABSOLUTE(.);
+  } >ulpp_seg :ulpp_phdr
+
+  .ulpp.text : ALIGN(4)
+  {
+    _ulpp_text_start = ABSOLUTE(.);
+    *(.ulpp.literal .ulpp.text)
+    _ulpp_text_end = ABSOLUTE(.);
+  } >ulpp_seg :ulpp_phdr
+
+  .ulpp.bss (NOLOAD) : ALIGN(8)
+  {
+    . = ALIGN (8);
+    _ulpp_bss_start = ABSOLUTE(.);
+    *(.ulpp.bss)
+    . = ALIGN (8);
+    _ulpp_bss_end = ABSOLUTE(.);
+    _memmap_seg_ulpp_end = ALIGN(0x8);
+  } >ulpp_seg :ulpp_bss_phdr
+
+  .dtsv3.rodata : ALIGN(4)
+  {
+    _dtsv3_rodata_start = ABSOLUTE(.);
+    *(.dtsv3.rodata)
+    _dtsv3_rodata_end = ABSOLUTE(.);
+  } >dtsv3_seg :dtsv3_phdr
+
+  .dtsv3.data : ALIGN(4)
+  {
+    _dtsv3_data_start = ABSOLUTE(.);
+    *(.dtsv3.data)
+    _dtsv3_data_end = ABSOLUTE(.);
+  } >dtsv3_seg :dtsv3_phdr
+
+  .dtsv3.text : ALIGN(4)
+  {
+    _dtsv3_text_start = ABSOLUTE(.);
+    *(.dtsv3.literal .dtsv3.text)
+    _dtsv3_text_end = ABSOLUTE(.);
+  } >dtsv3_seg :dtsv3_phdr
+
+  .dtsv3.bss (NOLOAD) : ALIGN(8)
+  {
+    . = ALIGN (8);
+    _dtsv3_bss_start = ABSOLUTE(.);
+    *(.dtsv3.bss)
+    . = ALIGN (8);
+    _dtsv3_bss_end = ABSOLUTE(.);
+    _memmap_seg_dtsv3_end = ALIGN(0x8);
+  } >dtsv3_seg :dtsv3_bss_phdr
+
+  .dtsv4.rodata : ALIGN(4)
+  {
+    _dtsv4_rodata_start = ABSOLUTE(.);
+    *(.dtsv4.rodata)
+    _dtsv4_rodata_end = ABSOLUTE(.);
+  } >dtsv4_seg :dtsv4_phdr
+
+  .dtsv4.data : ALIGN(4)
+  {
+    _dtsv4_data_start = ABSOLUTE(.);
+    *(.dtsv4.data)
+    _dtsv4_data_end = ABSOLUTE(.);
+  } >dtsv4_seg :dtsv4_phdr
+
+  .dtsv4.text : ALIGN(4)
+  {
+    _dtsv4_text_start = ABSOLUTE(.);
+    *(.dtsv4.literal .dtsv4.text)
+    _dtsv4_text_end = ABSOLUTE(.);
+  } >dtsv4_seg :dtsv4_phdr
+
+  .dtsv4.bss (NOLOAD) : ALIGN(8)
+  {
+    . = ALIGN (8);
+    _dtsv4_bss_start = ABSOLUTE(.);
+    *(.dtsv4.bss)
+    . = ALIGN (8);
+    _dtsv4_bss_end = ABSOLUTE(.);
+    _memmap_seg_dtsv4_end = ALIGN(0x8);
+  } >dtsv4_seg :dtsv4_bss_phdr
+
+  .dram0.rodata : ALIGN(4)
+  {
+    _dram0_rodata_start = ABSOLUTE(.);
+    *(.dram0.rodata)
+    *(.dram.rodata)
+    _dram0_rodata_end = ABSOLUTE(.);
+  } >dram0_0_seg :dram0_0_phdr
+
+  .dram0.literal : ALIGN(4)
+  {
+    _dram0_literal_start = ABSOLUTE(.);
+    *(.dram0.literal)
+    *(.dram.literal)
+    _dram0_literal_end = ABSOLUTE(.);
+  } >dram0_0_seg :dram0_0_phdr
+
+  .dram0.data : ALIGN(4)
+  {
+    _dram0_data_start = ABSOLUTE(.);
+    *(.dram0.data)
+    *(.dram.data)
+    _dram0_data_end = ABSOLUTE(.);
+  } >dram0_0_seg :dram0_0_phdr
+
+  .dram0.bss (NOLOAD) : ALIGN(8)
+  {
+    . = ALIGN (8);
+    _dram0_bss_start = ABSOLUTE(.);
+    *(.dram0.bss)
+    *(.om.debug.bss)
+    *(.os.stack.bss)
+    . = ALIGN (8);
+    _dram0_bss_end = ABSOLUTE(.);
+    _end = ALIGN(0x8);
+    PROVIDE(end = ALIGN(0x8));
+    _stack_sentry = ALIGN(0x8);
+    _memmap_seg_dram0_0_end = ALIGN(0x8);
+  } >dram0_0_seg :dram0_0_bss_phdr
+  __stack = 0xe8080000;
+  _heap_sentry = 0xe8080000;
+
+  .ResetVector.text : ALIGN(4)
+  {
+    _ResetVector_text_start = ABSOLUTE(.);
+    KEEP (*(.ResetVector.text))
+    _ResetVector_text_end = ABSOLUTE(.);
+    _memmap_seg_iram0_0_end = ALIGN(0x8);
+  } >iram0_0_seg :iram0_0_phdr
+
+  .Reset.literal : ALIGN(4)
+  {
+    _Reset_literal_start = ABSOLUTE(.);
+    *(.Reset.literal)
+    _Reset_literal_end = ABSOLUTE(.);
+    _memmap_seg_iram0_1_end = ALIGN(0x8);
+  } >iram0_1_seg :iram0_1_phdr
+
+  .WindowVectors.text : ALIGN(4)
+  {
+    _WindowVectors_text_start = ABSOLUTE(.);
+    KEEP (*(.WindowVectors.text))
+    _WindowVectors_text_end = ABSOLUTE(.);
+    _memmap_seg_iram0_2_end = ALIGN(0x8);
+  } >iram0_2_seg :iram0_2_phdr
+
+  .Level2InterruptVector.literal : ALIGN(4)
+  {
+    _Level2InterruptVector_literal_start = ABSOLUTE(.);
+    *(.Level2InterruptVector.literal)
+    _Level2InterruptVector_literal_end = ABSOLUTE(.);
+    _memmap_seg_iram0_3_end = ALIGN(0x8);
+  } >iram0_3_seg :iram0_3_phdr
+
+  .Level2InterruptVector.text : ALIGN(4)
+  {
+    _Level2InterruptVector_text_start = ABSOLUTE(.);
+    KEEP (*(.Level2InterruptVector.text))
+    _Level2InterruptVector_text_end = ABSOLUTE(.);
+    _memmap_seg_iram0_4_end = ALIGN(0x8);
+  } >iram0_4_seg :iram0_4_phdr
+
+  .Level3InterruptVector.literal : ALIGN(4)
+  {
+    _Level3InterruptVector_literal_start = ABSOLUTE(.);
+    *(.Level3InterruptVector.literal)
+    _Level3InterruptVector_literal_end = ABSOLUTE(.);
+    _memmap_seg_iram0_5_end = ALIGN(0x8);
+  } >iram0_5_seg :iram0_5_phdr
+
+  .Level3InterruptVector.text : ALIGN(4)
+  {
+    _Level3InterruptVector_text_start = ABSOLUTE(.);
+    KEEP (*(.Level3InterruptVector.text))
+    _Level3InterruptVector_text_end = ABSOLUTE(.);
+    _memmap_seg_iram0_6_end = ALIGN(0x8);
+  } >iram0_6_seg :iram0_6_phdr
+
+  .Level4InterruptVector.literal : ALIGN(4)
+  {
+    _Level4InterruptVector_literal_start = ABSOLUTE(.);
+    *(.Level4InterruptVector.literal)
+    _Level4InterruptVector_literal_end = ABSOLUTE(.);
+    _memmap_seg_iram0_7_end = ALIGN(0x8);
+  } >iram0_7_seg :iram0_7_phdr
+
+  .Level4InterruptVector.text : ALIGN(4)
+  {
+    _Level4InterruptVector_text_start = ABSOLUTE(.);
+    KEEP (*(.Level4InterruptVector.text))
+    _Level4InterruptVector_text_end = ABSOLUTE(.);
+    _memmap_seg_iram0_8_end = ALIGN(0x8);
+  } >iram0_8_seg :iram0_8_phdr
+
+  .DebugExceptionVector.literal : ALIGN(4)
+  {
+    _DebugExceptionVector_literal_start = ABSOLUTE(.);
+    *(.DebugExceptionVector.literal)
+    _DebugExceptionVector_literal_end = ABSOLUTE(.);
+    _memmap_seg_iram0_9_end = ALIGN(0x8);
+  } >iram0_9_seg :iram0_9_phdr
+
+  .DebugExceptionVector.text : ALIGN(4)
+  {
+    _DebugExceptionVector_text_start = ABSOLUTE(.);
+    KEEP (*(.DebugExceptionVector.text))
+    _DebugExceptionVector_text_end = ABSOLUTE(.);
+    _memmap_seg_iram0_10_end = ALIGN(0x8);
+  } >iram0_10_seg :iram0_10_phdr
+
+  .NMIExceptionVector.literal : ALIGN(4)
+  {
+    _NMIExceptionVector_literal_start = ABSOLUTE(.);
+    *(.NMIExceptionVector.literal)
+    _NMIExceptionVector_literal_end = ABSOLUTE(.);
+    _memmap_seg_iram0_11_end = ALIGN(0x8);
+  } >iram0_11_seg :iram0_11_phdr
+
+  .NMIExceptionVector.text : ALIGN(4)
+  {
+    _NMIExceptionVector_text_start = ABSOLUTE(.);
+    KEEP (*(.NMIExceptionVector.text))
+    _NMIExceptionVector_text_end = ABSOLUTE(.);
+    _memmap_seg_iram0_12_end = ALIGN(0x8);
+  } >iram0_12_seg :iram0_12_phdr
+
+  .KernelExceptionVector.literal : ALIGN(4)
+  {
+    _KernelExceptionVector_literal_start = ABSOLUTE(.);
+    *(.KernelExceptionVector.literal)
+    _KernelExceptionVector_literal_end = ABSOLUTE(.);
+    _memmap_seg_iram0_13_end = ALIGN(0x8);
+  } >iram0_13_seg :iram0_13_phdr
+
+  .KernelExceptionVector.text : ALIGN(4)
+  {
+    _KernelExceptionVector_text_start = ABSOLUTE(.);
+    KEEP (*(.KernelExceptionVector.text))
+    _KernelExceptionVector_text_end = ABSOLUTE(.);
+    _memmap_seg_iram0_14_end = ALIGN(0x8);
+  } >iram0_14_seg :iram0_14_phdr
+
+  .UserExceptionVector.literal : ALIGN(4)
+  {
+    _UserExceptionVector_literal_start = ABSOLUTE(.);
+    *(.UserExceptionVector.literal)
+    _UserExceptionVector_literal_end = ABSOLUTE(.);
+    _memmap_seg_iram0_15_end = ALIGN(0x8);
+  } >iram0_15_seg :iram0_15_phdr
+
+  .UserExceptionVector.text : ALIGN(4)
+  {
+    _UserExceptionVector_text_start = ABSOLUTE(.);
+    KEEP (*(.UserExceptionVector.text))
+    _UserExceptionVector_text_end = ABSOLUTE(.);
+    _memmap_seg_iram0_16_end = ALIGN(0x8);
+  } >iram0_16_seg :iram0_16_phdr
+
+  .DoubleExceptionVector.literal : ALIGN(4)
+  {
+    _DoubleExceptionVector_literal_start = ABSOLUTE(.);
+    *(.DoubleExceptionVector.literal)
+    _DoubleExceptionVector_literal_end = ABSOLUTE(.);
+    _memmap_seg_iram0_17_end = ALIGN(0x8);
+  } >iram0_17_seg :iram0_17_phdr
+
+  .DoubleExceptionVector.text : ALIGN(4)
+  {
+    _DoubleExceptionVector_text_start = ABSOLUTE(.);
+    KEEP (*(.DoubleExceptionVector.text))
+    _DoubleExceptionVector_text_end = ABSOLUTE(.);
+    _memmap_seg_iram0_18_end = ALIGN(0x8);
+  } >iram0_18_seg :iram0_18_phdr
+
+  .Reset.text : ALIGN(4)
+  {
+    _Reset_text_start = ABSOLUTE(.);
+    *(.Reset.text)
+    _Reset_text_end = ABSOLUTE(.);
+  } >iram0_19_seg :iram0_19_phdr
+
+  .iram0.text : ALIGN(4)
+  {
+    _iram0_text_start = ABSOLUTE(.);
+    *(.iram0.literal .iram.literal .iram.text.literal .iram0.text .iram.text)
+    _iram0_text_end = ABSOLUTE(.);
+    _memmap_seg_iram0_19_end = ALIGN(0x8);
+  } >iram0_19_seg :iram0_19_phdr
+
+  .sram.shareaddr : ALIGN(4)
+  {
+    _sram_shareaddr_start = ABSOLUTE(.);
+    *(.sram.shareaddr)
+    _sram_shareaddr_end = ABSOLUTE(.);
+  } >sram0_seg :sram0_phdr
+
+  .sram.rodata : ALIGN(4)
+  {
+    _sram_rodata_start = ABSOLUTE(.);
+    *(.sram.rodata)
+    _sram_rodata_end = ABSOLUTE(.);
+  } >sram0_seg :sram0_phdr
+
+  .rodata : ALIGN(4)
+  {
+    _rodata_start = ABSOLUTE(.);
+    *(.rodata)
+    *(.rodata.*)
+    *(.gnu.linkonce.r.*)
+    *(.rodata1)
+    __XT_EXCEPTION_TABLE__ = ABSOLUTE(.);
+    KEEP (*(.xt_except_table))
+    KEEP (*(.gcc_except_table))
+    *(.gnu.linkonce.e.*)
+    *(.gnu.version_r)
+    KEEP (*(.eh_frame))
+    /*  C++ constructor and destructor tables, properly ordered:  */
+    KEEP (*crtbegin.o(.ctors))
+    KEEP (*(EXCLUDE_FILE (*crtend.o) .ctors))
+    KEEP (*(SORT(.ctors.*)))
+    KEEP (*(.ctors))
+    KEEP (*crtbegin.o(.dtors))
+    KEEP (*(EXCLUDE_FILE (*crtend.o) .dtors))
+    KEEP (*(SORT(.dtors.*)))
+    KEEP (*(.dtors))
+    /*  C++ exception handlers table:  */
+    __XT_EXCEPTION_DESCS__ = ABSOLUTE(.);
+    *(.xt_except_desc)
+    *(.gnu.linkonce.h.*)
+    __XT_EXCEPTION_DESCS_END__ = ABSOLUTE(.);
+    *(.xt_except_desc_end)
+    *(.dynamic)
+    *(.gnu.version_d)
+    . = ALIGN(4);		/* this table MUST be 4-byte aligned */
+    _bss_table_start = ABSOLUTE(.);
+    LONG(_vlpd_bss_start)
+    LONG(_vlpd_bss_end)
+    LONG(_efr_fr_hr_vlpd_bss_start)
+    LONG(_efr_fr_hr_vlpd_bss_end)
+    LONG(_amr_vlpd_bss_start)
+    LONG(_amr_vlpd_bss_end)
+    LONG(_amrwb_vlpd_bss_start)
+    LONG(_amrwb_vlpd_bss_end)
+    LONG(_ulpp_bss_start)
+    LONG(_ulpp_bss_end)
+    LONG(_dtsv3_bss_start)
+    LONG(_dtsv3_bss_end)
+    LONG(_dtsv4_bss_start)
+    LONG(_dtsv4_bss_end)
+    LONG(_dram0_bss_start)
+    LONG(_dram0_bss_end)
+    LONG(_bss_start)
+    LONG(_bss_end)
+    _bss_table_end = ABSOLUTE(.);
+    _rodata_end = ABSOLUTE(.);
+  } >sram0_seg :sram0_phdr
+
+  .sram.text : ALIGN(4)
+  {
+    _sram_text_start = ABSOLUTE(.);
+    *(.sram.literal .sram.text)
+    _sram_text_end = ABSOLUTE(.);
+  } >sram0_seg :sram0_phdr
+
+  .text : ALIGN(4)
+  {
+    _stext = .;
+    _text_start = ABSOLUTE(.);
+    *(.entry.text)
+    *(.init.literal)
+    KEEP(*(.init))
+    *(.literal .text .literal.* .text.* .stub .gnu.warning .gnu.linkonce.literal.* .gnu.linkonce.t.*.literal .gnu.linkonce.t.*)
+    *(.fini.literal)
+    KEEP(*(.fini))
+    *(.gnu.version)
+    _text_end = ABSOLUTE(.);
+    _etext = .;
+  } >sram0_seg :sram0_phdr
+
+  .sram.data : ALIGN(4)
+  {
+    _sram_data_start = ABSOLUTE(.);
+    *(.sram.data)
+    _sram_data_end = ABSOLUTE(.);
+  } >sram0_seg :sram0_phdr
+
+  .data : ALIGN(4)
+  {
+    _data_start = ABSOLUTE(.);
+    *(.data)
+    *(.data.*)
+    *(.gnu.linkonce.d.*)
+    KEEP(*(.gnu.linkonce.d.*personality*))
+    *(.data1)
+    *(.sdata)
+    *(.sdata.*)
+    *(.gnu.linkonce.s.*)
+    *(.sdata2)
+    *(.sdata2.*)
+    *(.gnu.linkonce.s2.*)
+    KEEP(*(.jcr))
+    _data_end = ABSOLUTE(.);
+  } >sram0_seg :sram0_phdr
+
+  .sram.uninit : ALIGN(4)
+  {
+    _sram_uninit_start = ABSOLUTE(.);
+    *(.sram.uninit)
+    _sram_uninit_end = ABSOLUTE(.);
+  } >sram0_seg :sram0_phdr
+
+  .bss (NOLOAD) : ALIGN(8)
+  {
+    . = ALIGN (8);
+    _bss_start = ABSOLUTE(.);
+    *(.dynsbss)
+    *(.sbss)
+    *(.sbss.*)
+    *(.gnu.linkonce.sb.*)
+    *(.scommon)
+    *(.sbss2)
+    *(.sbss2.*)
+    *(.gnu.linkonce.sb2.*)
+    *(.dynbss)
+    *(.bss)
+    *(.bss.*)
+    *(.gnu.linkonce.b.*)
+    *(COMMON)
+    *(.sram.pool.bss)
+    *(.sram.bss)
+    . = ALIGN (8);
+    _bss_end = ABSOLUTE(.);
+    _memmap_seg_sram0_end = ALIGN(0x8);
+  } >sram0_seg :sram0_bss_phdr
+  .debug  0 :  { *(.debug) }
+  .line  0 :  { *(.line) }
+  .debug_srcinfo  0 :  { *(.debug_srcinfo) }
+  .debug_sfnames  0 :  { *(.debug_sfnames) }
+  .debug_aranges  0 :  { *(.debug_aranges) }
+  .debug_pubnames  0 :  { *(.debug_pubnames) }
+  .debug_info  0 :  { *(.debug_info) }
+  .debug_abbrev  0 :  { *(.debug_abbrev) }
+  .debug_line  0 :  { *(.debug_line) }
+  .debug_frame  0 :  { *(.debug_frame) }
+  .debug_str  0 :  { *(.debug_str) }
+  .debug_loc  0 :  { *(.debug_loc) }
+  .debug_macinfo  0 :  { *(.debug_macinfo) }
+  .debug_weaknames  0 :  { *(.debug_weaknames) }
+  .debug_funcnames  0 :  { *(.debug_funcnames) }
+  .debug_typenames  0 :  { *(.debug_typenames) }
+  .debug_varnames  0 :  { *(.debug_varnames) }
+  .xt.insn 0 :
+  {
+    KEEP (*(.xt.insn))
+    KEEP (*(.gnu.linkonce.x.*))
+  }
+  .xt.prop 0 :
+  {
+    KEEP (*(.xt.prop))
+    KEEP (*(.xt.prop.*))
+    KEEP (*(.gnu.linkonce.prop.*))
+  }
+  .xt.lit 0 :
+  {
+    KEEP (*(.xt.lit))
+    KEEP (*(.xt.lit.*))
+    KEEP (*(.gnu.linkonce.p.*))
+  }
+  .debug.xt.callgraph 0 :
+  {
+    KEEP (*(.debug.xt.callgraph .debug.xt.callgraph.* .gnu.linkonce.xt.callgraph.*))
+  }
+}
+
diff --git a/hifi/xaf/hifi-dpf/build_hikey/hifi_hikey_lsp/ldscripts/elf32xtensa.xbn b/hifi/xaf/hifi-dpf/build_hikey/hifi_hikey_lsp/ldscripts/elf32xtensa.xbn
new file mode 100644
index 0000000..e226d64
--- /dev/null
+++ b/hifi/xaf/hifi-dpf/build_hikey/hifi_hikey_lsp/ldscripts/elf32xtensa.xbn
@@ -0,0 +1,827 @@
+/* This linker script generated from xt-genldscripts.tpp for LSP hifi_hikey_lsp */
+/* Linker Script for ld -N */
+MEMORY
+{
+  sram0_seg :                         	org = 0xC0000000, len = 0x408000
+  old_vlpd_seg :                      	org = 0xC0408000, len = 0x10000
+  efr_fr_hr_vlpd_seg :                	org = 0xC0418000, len = 0x10000
+  amr_vlpd_seg :                      	org = 0xC0428000, len = 0x10000
+  amrwb_vlpd_seg :                    	org = 0xC0438000, len = 0x10000
+  evrc_evrcb_vlpt_seg :               	org = 0xC0448000, len = 0x48000
+  efr_fr_hr_vlpt_seg :                	org = 0xC0490000, len = 0x30000
+  amr_vlpt_seg :                      	org = 0xC04C0000, len = 0x20000
+  amrwb_vlpt_seg :                    	org = 0xC04E0000, len = 0x30000
+  vlpt_seg :                          	org = 0xC0510000, len = 0x48000
+  vlpd_seg :                          	org = 0xC0558000, len = 0x20000
+  ulpp_seg :                          	org = 0xC0578000, len = 0x40000
+  dtsv3_seg :                         	org = 0xC05B8000, len = 0x20000
+  dtsv4_seg :                         	org = 0xC05D8000, len = 0x28000
+  dram0_0_seg :                       	org = 0xE8058000, len = 0x28000
+  iram0_0_seg :                       	org = 0xE8080000, len = 0x300
+  iram0_1_seg :                       	org = 0xE8080300, len = 0x100
+  iram0_2_seg :                       	org = 0xE8080400, len = 0x178
+  iram0_3_seg :                       	org = 0xE8080578, len = 0x8
+  iram0_4_seg :                       	org = 0xE8080580, len = 0x38
+  iram0_5_seg :                       	org = 0xE80805B8, len = 0x8
+  iram0_6_seg :                       	org = 0xE80805C0, len = 0x38
+  iram0_7_seg :                       	org = 0xE80805F8, len = 0x8
+  iram0_8_seg :                       	org = 0xE8080600, len = 0x38
+  iram0_9_seg :                       	org = 0xE8080638, len = 0x8
+  iram0_10_seg :                      	org = 0xE8080640, len = 0x38
+  iram0_11_seg :                      	org = 0xE8080678, len = 0x48
+  iram0_12_seg :                      	org = 0xE80806C0, len = 0x38
+  iram0_13_seg :                      	org = 0xE80806F8, len = 0x8
+  iram0_14_seg :                      	org = 0xE8080700, len = 0x38
+  iram0_15_seg :                      	org = 0xE8080738, len = 0x8
+  iram0_16_seg :                      	org = 0xE8080740, len = 0x38
+  iram0_17_seg :                      	org = 0xE8080778, len = 0x48
+  iram0_18_seg :                      	org = 0xE80807C0, len = 0x40
+  iram0_19_seg :                      	org = 0xE8080800, len = 0xB800
+}
+
+PHDRS
+{
+  sram0_phdr PT_LOAD;
+  sram0_bss_phdr PT_LOAD;
+  old_vlpd_phdr PT_LOAD;
+  old_vlpd_bss_phdr PT_LOAD;
+  efr_fr_hr_vlpd_phdr PT_LOAD;
+  efr_fr_hr_vlpd_bss_phdr PT_LOAD;
+  amr_vlpd_phdr PT_LOAD;
+  amr_vlpd_bss_phdr PT_LOAD;
+  amrwb_vlpd_phdr PT_LOAD;
+  amrwb_vlpd_bss_phdr PT_LOAD;
+  evrc_evrcb_vlpt_phdr PT_LOAD;
+  efr_fr_hr_vlpt_phdr PT_LOAD;
+  amr_vlpt_phdr PT_LOAD;
+  amrwb_vlpt_phdr PT_LOAD;
+  vlpt_phdr PT_LOAD;
+  vlpd_phdr PT_LOAD;
+  ulpp_phdr PT_LOAD;
+  ulpp_bss_phdr PT_LOAD;
+  dtsv3_phdr PT_LOAD;
+  dtsv3_bss_phdr PT_LOAD;
+  dtsv4_phdr PT_LOAD;
+  dtsv4_bss_phdr PT_LOAD;
+  dram0_0_phdr PT_LOAD;
+  dram0_0_bss_phdr PT_LOAD;
+  iram0_0_phdr PT_LOAD;
+  iram0_1_phdr PT_LOAD;
+  iram0_2_phdr PT_LOAD;
+  iram0_3_phdr PT_LOAD;
+  iram0_4_phdr PT_LOAD;
+  iram0_5_phdr PT_LOAD;
+  iram0_6_phdr PT_LOAD;
+  iram0_7_phdr PT_LOAD;
+  iram0_8_phdr PT_LOAD;
+  iram0_9_phdr PT_LOAD;
+  iram0_10_phdr PT_LOAD;
+  iram0_11_phdr PT_LOAD;
+  iram0_12_phdr PT_LOAD;
+  iram0_13_phdr PT_LOAD;
+  iram0_14_phdr PT_LOAD;
+  iram0_15_phdr PT_LOAD;
+  iram0_16_phdr PT_LOAD;
+  iram0_17_phdr PT_LOAD;
+  iram0_18_phdr PT_LOAD;
+  iram0_19_phdr PT_LOAD;
+}
+
+
+/*  Default entry point:  */
+ENTRY(_ResetVector)
+
+/*  Memory boundary addresses:  */
+_memmap_mem_iram0_start = 0xe8080000;
+_memmap_mem_iram0_end   = 0xe808c000;
+_memmap_mem_dram0_start = 0xe8058000;
+_memmap_mem_dram0_end   = 0xe8080000;
+_memmap_mem_sram_start = 0xc0000000;
+_memmap_mem_sram_end   = 0xc0600000;
+
+/*  Memory segment boundary addresses:  */
+_memmap_seg_sram0_start = 0xc0000000;
+_memmap_seg_sram0_max   = 0xc0408000;
+_memmap_seg_old_vlpd_start = 0xc0408000;
+_memmap_seg_old_vlpd_max   = 0xc0418000;
+_memmap_seg_efr_fr_hr_vlpd_start = 0xc0418000;
+_memmap_seg_efr_fr_hr_vlpd_max   = 0xc0428000;
+_memmap_seg_amr_vlpd_start = 0xc0428000;
+_memmap_seg_amr_vlpd_max   = 0xc0438000;
+_memmap_seg_amrwb_vlpd_start = 0xc0438000;
+_memmap_seg_amrwb_vlpd_max   = 0xc0448000;
+_memmap_seg_evrc_evrcb_vlpt_start = 0xc0448000;
+_memmap_seg_evrc_evrcb_vlpt_max   = 0xc0490000;
+_memmap_seg_efr_fr_hr_vlpt_start = 0xc0490000;
+_memmap_seg_efr_fr_hr_vlpt_max   = 0xc04c0000;
+_memmap_seg_amr_vlpt_start = 0xc04c0000;
+_memmap_seg_amr_vlpt_max   = 0xc04e0000;
+_memmap_seg_amrwb_vlpt_start = 0xc04e0000;
+_memmap_seg_amrwb_vlpt_max   = 0xc0510000;
+_memmap_seg_vlpt_start = 0xc0510000;
+_memmap_seg_vlpt_max   = 0xc0558000;
+_memmap_seg_vlpd_start = 0xc0558000;
+_memmap_seg_vlpd_max   = 0xc0578000;
+_memmap_seg_ulpp_start = 0xc0578000;
+_memmap_seg_ulpp_max   = 0xc05b8000;
+_memmap_seg_dtsv3_start = 0xc05b8000;
+_memmap_seg_dtsv3_max   = 0xc05d8000;
+_memmap_seg_dtsv4_start = 0xc05d8000;
+_memmap_seg_dtsv4_max   = 0xc0600000;
+_memmap_seg_dram0_0_start = 0xe8058000;
+_memmap_seg_dram0_0_max   = 0xe8080000;
+_memmap_seg_iram0_0_start = 0xe8080000;
+_memmap_seg_iram0_0_max   = 0xe8080300;
+_memmap_seg_iram0_1_start = 0xe8080300;
+_memmap_seg_iram0_1_max   = 0xe8080400;
+_memmap_seg_iram0_2_start = 0xe8080400;
+_memmap_seg_iram0_2_max   = 0xe8080578;
+_memmap_seg_iram0_3_start = 0xe8080578;
+_memmap_seg_iram0_3_max   = 0xe8080580;
+_memmap_seg_iram0_4_start = 0xe8080580;
+_memmap_seg_iram0_4_max   = 0xe80805b8;
+_memmap_seg_iram0_5_start = 0xe80805b8;
+_memmap_seg_iram0_5_max   = 0xe80805c0;
+_memmap_seg_iram0_6_start = 0xe80805c0;
+_memmap_seg_iram0_6_max   = 0xe80805f8;
+_memmap_seg_iram0_7_start = 0xe80805f8;
+_memmap_seg_iram0_7_max   = 0xe8080600;
+_memmap_seg_iram0_8_start = 0xe8080600;
+_memmap_seg_iram0_8_max   = 0xe8080638;
+_memmap_seg_iram0_9_start = 0xe8080638;
+_memmap_seg_iram0_9_max   = 0xe8080640;
+_memmap_seg_iram0_10_start = 0xe8080640;
+_memmap_seg_iram0_10_max   = 0xe8080678;
+_memmap_seg_iram0_11_start = 0xe8080678;
+_memmap_seg_iram0_11_max   = 0xe80806c0;
+_memmap_seg_iram0_12_start = 0xe80806c0;
+_memmap_seg_iram0_12_max   = 0xe80806f8;
+_memmap_seg_iram0_13_start = 0xe80806f8;
+_memmap_seg_iram0_13_max   = 0xe8080700;
+_memmap_seg_iram0_14_start = 0xe8080700;
+_memmap_seg_iram0_14_max   = 0xe8080738;
+_memmap_seg_iram0_15_start = 0xe8080738;
+_memmap_seg_iram0_15_max   = 0xe8080740;
+_memmap_seg_iram0_16_start = 0xe8080740;
+_memmap_seg_iram0_16_max   = 0xe8080778;
+_memmap_seg_iram0_17_start = 0xe8080778;
+_memmap_seg_iram0_17_max   = 0xe80807c0;
+_memmap_seg_iram0_18_start = 0xe80807c0;
+_memmap_seg_iram0_18_max   = 0xe8080800;
+_memmap_seg_iram0_19_start = 0xe8080800;
+_memmap_seg_iram0_19_max   = 0xe808c000;
+
+_rom_store_table = 0;
+PROVIDE(_memmap_vecbase_reset = 0xe8080400);
+PROVIDE(_memmap_reset_vector = 0xe8080000);
+/* Various memory-map dependent cache attribute settings: */
+_memmap_cacheattr_wb_base = 0x44000000;
+_memmap_cacheattr_wt_base = 0x11000000;
+_memmap_cacheattr_bp_base = 0x22000000;
+_memmap_cacheattr_unused_mask = 0x00FFFFFF;
+_memmap_cacheattr_wb_trapnull = 0x4422222F;
+_memmap_cacheattr_wba_trapnull = 0x4422222F;
+_memmap_cacheattr_wbna_trapnull = 0x5522222F;
+_memmap_cacheattr_wt_trapnull = 0x1122222F;
+_memmap_cacheattr_bp_trapnull = 0x2222222F;
+_memmap_cacheattr_wb_strict = 0x44FFFFFF;
+_memmap_cacheattr_wt_strict = 0x11FFFFFF;
+_memmap_cacheattr_bp_strict = 0x22FFFFFF;
+_memmap_cacheattr_wb_allvalid = 0x44222222;
+_memmap_cacheattr_wt_allvalid = 0x11222222;
+_memmap_cacheattr_bp_allvalid = 0x22222222;
+PROVIDE(_memmap_cacheattr_reset = _memmap_cacheattr_wb_trapnull);
+
+SECTIONS
+{
+
+  .vlpd.rodata : ALIGN(4)
+  {
+    _vlpd_rodata_start = ABSOLUTE(.);
+    *(.vlpd.rodata)
+    _vlpd_rodata_end = ABSOLUTE(.);
+  } >old_vlpd_seg :old_vlpd_phdr
+
+  .vlpd.data : ALIGN(4)
+  {
+    _vlpd_data_start = ABSOLUTE(.);
+    *(.vlpd.data)
+    _vlpd_data_end = ABSOLUTE(.);
+  } >old_vlpd_seg :old_vlpd_phdr
+
+  .vlpd.bss (NOLOAD) : ALIGN(8)
+  {
+    . = ALIGN (8);
+    _vlpd_bss_start = ABSOLUTE(.);
+    *(.vlpd.bss)
+    . = ALIGN (8);
+    _vlpd_bss_end = ABSOLUTE(.);
+    _memmap_seg_old_vlpd_end = ALIGN(0x8);
+  } >old_vlpd_seg :old_vlpd_bss_phdr
+
+  .efr_fr_hr_vlpd.rodata : ALIGN(4)
+  {
+    _efr_fr_hr_vlpd_rodata_start = ABSOLUTE(.);
+    *(.efr_fr_hr_vlpd.rodata)
+    _efr_fr_hr_vlpd_rodata_end = ABSOLUTE(.);
+  } >efr_fr_hr_vlpd_seg :efr_fr_hr_vlpd_phdr
+
+  .efr_fr_hr_vlpd.data : ALIGN(4)
+  {
+    _efr_fr_hr_vlpd_data_start = ABSOLUTE(.);
+    *(.efr_fr_hr_vlpd.data)
+    _efr_fr_hr_vlpd_data_end = ABSOLUTE(.);
+  } >efr_fr_hr_vlpd_seg :efr_fr_hr_vlpd_phdr
+
+  .efr_fr_hr_vlpd.bss (NOLOAD) : ALIGN(8)
+  {
+    . = ALIGN (8);
+    _efr_fr_hr_vlpd_bss_start = ABSOLUTE(.);
+    *(.efr_fr_hr_vlpd.bss)
+    . = ALIGN (8);
+    _efr_fr_hr_vlpd_bss_end = ABSOLUTE(.);
+    _memmap_seg_efr_fr_hr_vlpd_end = ALIGN(0x8);
+  } >efr_fr_hr_vlpd_seg :efr_fr_hr_vlpd_bss_phdr
+
+  .amr_vlpd.rodata : ALIGN(4)
+  {
+    _amr_vlpd_rodata_start = ABSOLUTE(.);
+    *(.amr_vlpd.rodata)
+    _amr_vlpd_rodata_end = ABSOLUTE(.);
+  } >amr_vlpd_seg :amr_vlpd_phdr
+
+  .amr_vlpd.data : ALIGN(4)
+  {
+    _amr_vlpd_data_start = ABSOLUTE(.);
+    *(.amr_vlpd.data)
+    _amr_vlpd_data_end = ABSOLUTE(.);
+  } >amr_vlpd_seg :amr_vlpd_phdr
+
+  .amr_vlpd.bss (NOLOAD) : ALIGN(8)
+  {
+    . = ALIGN (8);
+    _amr_vlpd_bss_start = ABSOLUTE(.);
+    *(.amr_vlpd.bss)
+    . = ALIGN (8);
+    _amr_vlpd_bss_end = ABSOLUTE(.);
+    _memmap_seg_amr_vlpd_end = ALIGN(0x8);
+  } >amr_vlpd_seg :amr_vlpd_bss_phdr
+
+  .amrwb_vlpd.rodata : ALIGN(4)
+  {
+    _amrwb_vlpd_rodata_start = ABSOLUTE(.);
+    *(.amrwb_vlpd.rodata)
+    _amrwb_vlpd_rodata_end = ABSOLUTE(.);
+  } >amrwb_vlpd_seg :amrwb_vlpd_phdr
+
+  .amrwb_vlpd.data : ALIGN(4)
+  {
+    _amrwb_vlpd_data_start = ABSOLUTE(.);
+    *(.amrwb_vlpd.data)
+    _amrwb_vlpd_data_end = ABSOLUTE(.);
+  } >amrwb_vlpd_seg :amrwb_vlpd_phdr
+
+  .amrwb_vlpd.bss (NOLOAD) : ALIGN(8)
+  {
+    . = ALIGN (8);
+    _amrwb_vlpd_bss_start = ABSOLUTE(.);
+    *(.amrwb_vlpd.bss)
+    . = ALIGN (8);
+    _amrwb_vlpd_bss_end = ABSOLUTE(.);
+    _memmap_seg_amrwb_vlpd_end = ALIGN(0x8);
+  } >amrwb_vlpd_seg :amrwb_vlpd_bss_phdr
+
+  .evrc_evrcb_vlpt.text : ALIGN(4)
+  {
+    _evrc_evrcb_vlpt_text_start = ABSOLUTE(.);
+    *(.evrc_evrcb_vlpt.literal .evrc_evrcb_vlpt.text)
+    _evrc_evrcb_vlpt_text_end = ABSOLUTE(.);
+    _memmap_seg_evrc_evrcb_vlpt_end = ALIGN(0x8);
+  } >evrc_evrcb_vlpt_seg :evrc_evrcb_vlpt_phdr
+
+  .efr_fr_hr_vlpt.text : ALIGN(4)
+  {
+    _efr_fr_hr_vlpt_text_start = ABSOLUTE(.);
+    *(.efr_fr_hr_vlpt.literal .efr_fr_hr_vlpt.text)
+    _efr_fr_hr_vlpt_text_end = ABSOLUTE(.);
+    _memmap_seg_efr_fr_hr_vlpt_end = ALIGN(0x8);
+  } >efr_fr_hr_vlpt_seg :efr_fr_hr_vlpt_phdr
+
+  .amr_vlpt.text : ALIGN(4)
+  {
+    _amr_vlpt_text_start = ABSOLUTE(.);
+    *(.amr_vlpt.literal .amr_vlpt.text)
+    _amr_vlpt_text_end = ABSOLUTE(.);
+    _memmap_seg_amr_vlpt_end = ALIGN(0x8);
+  } >amr_vlpt_seg :amr_vlpt_phdr
+
+  .amrwb_vlpt.text : ALIGN(4)
+  {
+    _amrwb_vlpt_text_start = ABSOLUTE(.);
+    *(.amrwb_vlpt.literal .amrwb_vlpt.text)
+    _amrwb_vlpt_text_end = ABSOLUTE(.);
+    _memmap_seg_amrwb_vlpt_end = ALIGN(0x8);
+  } >amrwb_vlpt_seg :amrwb_vlpt_phdr
+
+  .vlpt.text : ALIGN(4)
+  {
+    _vlpt_text_start = ABSOLUTE(.);
+    *(.vlpt.literal .vlpt.text)
+    _vlpt_text_end = ABSOLUTE(.);
+    _memmap_seg_vlpt_end = ALIGN(0x8);
+  } >vlpt_seg :vlpt_phdr
+
+  .low_power_dyn_alloc : ALIGN(4)
+  {
+    _low_power_dyn_alloc_start = ABSOLUTE(.);
+    *(.low_power_dyn_alloc)
+    _low_power_dyn_alloc_end = ABSOLUTE(.);
+    _memmap_seg_vlpd_end = ALIGN(0x8);
+  } >vlpd_seg :vlpd_phdr
+
+  .ulpp.rodata : ALIGN(4)
+  {
+    _ulpp_rodata_start = ABSOLUTE(.);
+    *(.ulpp.rodata)
+    _ulpp_rodata_end = ABSOLUTE(.);
+  } >ulpp_seg :ulpp_phdr
+
+  .ulpp.data : ALIGN(4)
+  {
+    _ulpp_data_start = ABSOLUTE(.);
+    *(.ulpp.data)
+    _ulpp_data_end = ABSOLUTE(.);
+  } >ulpp_seg :ulpp_phdr
+
+  .ulpp.text : ALIGN(4)
+  {
+    _ulpp_text_start = ABSOLUTE(.);
+    *(.ulpp.literal .ulpp.text)
+    _ulpp_text_end = ABSOLUTE(.);
+  } >ulpp_seg :ulpp_phdr
+
+  .ulpp.bss (NOLOAD) : ALIGN(8)
+  {
+    . = ALIGN (8);
+    _ulpp_bss_start = ABSOLUTE(.);
+    *(.ulpp.bss)
+    . = ALIGN (8);
+    _ulpp_bss_end = ABSOLUTE(.);
+    _memmap_seg_ulpp_end = ALIGN(0x8);
+  } >ulpp_seg :ulpp_bss_phdr
+
+  .dtsv3.rodata : ALIGN(4)
+  {
+    _dtsv3_rodata_start = ABSOLUTE(.);
+    *(.dtsv3.rodata)
+    _dtsv3_rodata_end = ABSOLUTE(.);
+  } >dtsv3_seg :dtsv3_phdr
+
+  .dtsv3.data : ALIGN(4)
+  {
+    _dtsv3_data_start = ABSOLUTE(.);
+    *(.dtsv3.data)
+    _dtsv3_data_end = ABSOLUTE(.);
+  } >dtsv3_seg :dtsv3_phdr
+
+  .dtsv3.text : ALIGN(4)
+  {
+    _dtsv3_text_start = ABSOLUTE(.);
+    *(.dtsv3.literal .dtsv3.text)
+    _dtsv3_text_end = ABSOLUTE(.);
+  } >dtsv3_seg :dtsv3_phdr
+
+  .dtsv3.bss (NOLOAD) : ALIGN(8)
+  {
+    . = ALIGN (8);
+    _dtsv3_bss_start = ABSOLUTE(.);
+    *(.dtsv3.bss)
+    . = ALIGN (8);
+    _dtsv3_bss_end = ABSOLUTE(.);
+    _memmap_seg_dtsv3_end = ALIGN(0x8);
+  } >dtsv3_seg :dtsv3_bss_phdr
+
+  .dtsv4.rodata : ALIGN(4)
+  {
+    _dtsv4_rodata_start = ABSOLUTE(.);
+    *(.dtsv4.rodata)
+    _dtsv4_rodata_end = ABSOLUTE(.);
+  } >dtsv4_seg :dtsv4_phdr
+
+  .dtsv4.data : ALIGN(4)
+  {
+    _dtsv4_data_start = ABSOLUTE(.);
+    *(.dtsv4.data)
+    _dtsv4_data_end = ABSOLUTE(.);
+  } >dtsv4_seg :dtsv4_phdr
+
+  .dtsv4.text : ALIGN(4)
+  {
+    _dtsv4_text_start = ABSOLUTE(.);
+    *(.dtsv4.literal .dtsv4.text)
+    _dtsv4_text_end = ABSOLUTE(.);
+  } >dtsv4_seg :dtsv4_phdr
+
+  .dtsv4.bss (NOLOAD) : ALIGN(8)
+  {
+    . = ALIGN (8);
+    _dtsv4_bss_start = ABSOLUTE(.);
+    *(.dtsv4.bss)
+    . = ALIGN (8);
+    _dtsv4_bss_end = ABSOLUTE(.);
+    _memmap_seg_dtsv4_end = ALIGN(0x8);
+  } >dtsv4_seg :dtsv4_bss_phdr
+
+  .dram0.rodata : ALIGN(4)
+  {
+    _dram0_rodata_start = ABSOLUTE(.);
+    *(.dram0.rodata)
+    *(.dram.rodata)
+    _dram0_rodata_end = ABSOLUTE(.);
+  } >dram0_0_seg :dram0_0_phdr
+
+  .dram0.literal : ALIGN(4)
+  {
+    _dram0_literal_start = ABSOLUTE(.);
+    *(.dram0.literal)
+    *(.dram.literal)
+    _dram0_literal_end = ABSOLUTE(.);
+  } >dram0_0_seg :dram0_0_phdr
+
+  .dram0.data : ALIGN(4)
+  {
+    _dram0_data_start = ABSOLUTE(.);
+    *(.dram0.data)
+    *(.dram.data)
+    _dram0_data_end = ABSOLUTE(.);
+  } >dram0_0_seg :dram0_0_phdr
+
+  .dram0.bss (NOLOAD) : ALIGN(8)
+  {
+    . = ALIGN (8);
+    _dram0_bss_start = ABSOLUTE(.);
+    *(.dram0.bss)
+    *(.om.debug.bss)
+    *(.os.stack.bss)
+    . = ALIGN (8);
+    _dram0_bss_end = ABSOLUTE(.);
+    _end = ALIGN(0x8);
+    PROVIDE(end = ALIGN(0x8));
+    _stack_sentry = ALIGN(0x8);
+    _memmap_seg_dram0_0_end = ALIGN(0x8);
+  } >dram0_0_seg :dram0_0_bss_phdr
+  __stack = 0xe8080000;
+  _heap_sentry = 0xe8080000;
+
+  .ResetVector.text : ALIGN(4)
+  {
+    _ResetVector_text_start = ABSOLUTE(.);
+    KEEP (*(.ResetVector.text))
+    _ResetVector_text_end = ABSOLUTE(.);
+    _memmap_seg_iram0_0_end = ALIGN(0x8);
+  } >iram0_0_seg :iram0_0_phdr
+
+  .Reset.literal : ALIGN(4)
+  {
+    _Reset_literal_start = ABSOLUTE(.);
+    *(.Reset.literal)
+    _Reset_literal_end = ABSOLUTE(.);
+    _memmap_seg_iram0_1_end = ALIGN(0x8);
+  } >iram0_1_seg :iram0_1_phdr
+
+  .WindowVectors.text : ALIGN(4)
+  {
+    _WindowVectors_text_start = ABSOLUTE(.);
+    KEEP (*(.WindowVectors.text))
+    _WindowVectors_text_end = ABSOLUTE(.);
+    _memmap_seg_iram0_2_end = ALIGN(0x8);
+  } >iram0_2_seg :iram0_2_phdr
+
+  .Level2InterruptVector.literal : ALIGN(4)
+  {
+    _Level2InterruptVector_literal_start = ABSOLUTE(.);
+    *(.Level2InterruptVector.literal)
+    _Level2InterruptVector_literal_end = ABSOLUTE(.);
+    _memmap_seg_iram0_3_end = ALIGN(0x8);
+  } >iram0_3_seg :iram0_3_phdr
+
+  .Level2InterruptVector.text : ALIGN(4)
+  {
+    _Level2InterruptVector_text_start = ABSOLUTE(.);
+    KEEP (*(.Level2InterruptVector.text))
+    _Level2InterruptVector_text_end = ABSOLUTE(.);
+    _memmap_seg_iram0_4_end = ALIGN(0x8);
+  } >iram0_4_seg :iram0_4_phdr
+
+  .Level3InterruptVector.literal : ALIGN(4)
+  {
+    _Level3InterruptVector_literal_start = ABSOLUTE(.);
+    *(.Level3InterruptVector.literal)
+    _Level3InterruptVector_literal_end = ABSOLUTE(.);
+    _memmap_seg_iram0_5_end = ALIGN(0x8);
+  } >iram0_5_seg :iram0_5_phdr
+
+  .Level3InterruptVector.text : ALIGN(4)
+  {
+    _Level3InterruptVector_text_start = ABSOLUTE(.);
+    KEEP (*(.Level3InterruptVector.text))
+    _Level3InterruptVector_text_end = ABSOLUTE(.);
+    _memmap_seg_iram0_6_end = ALIGN(0x8);
+  } >iram0_6_seg :iram0_6_phdr
+
+  .Level4InterruptVector.literal : ALIGN(4)
+  {
+    _Level4InterruptVector_literal_start = ABSOLUTE(.);
+    *(.Level4InterruptVector.literal)
+    _Level4InterruptVector_literal_end = ABSOLUTE(.);
+    _memmap_seg_iram0_7_end = ALIGN(0x8);
+  } >iram0_7_seg :iram0_7_phdr
+
+  .Level4InterruptVector.text : ALIGN(4)
+  {
+    _Level4InterruptVector_text_start = ABSOLUTE(.);
+    KEEP (*(.Level4InterruptVector.text))
+    _Level4InterruptVector_text_end = ABSOLUTE(.);
+    _memmap_seg_iram0_8_end = ALIGN(0x8);
+  } >iram0_8_seg :iram0_8_phdr
+
+  .DebugExceptionVector.literal : ALIGN(4)
+  {
+    _DebugExceptionVector_literal_start = ABSOLUTE(.);
+    *(.DebugExceptionVector.literal)
+    _DebugExceptionVector_literal_end = ABSOLUTE(.);
+    _memmap_seg_iram0_9_end = ALIGN(0x8);
+  } >iram0_9_seg :iram0_9_phdr
+
+  .DebugExceptionVector.text : ALIGN(4)
+  {
+    _DebugExceptionVector_text_start = ABSOLUTE(.);
+    KEEP (*(.DebugExceptionVector.text))
+    _DebugExceptionVector_text_end = ABSOLUTE(.);
+    _memmap_seg_iram0_10_end = ALIGN(0x8);
+  } >iram0_10_seg :iram0_10_phdr
+
+  .NMIExceptionVector.literal : ALIGN(4)
+  {
+    _NMIExceptionVector_literal_start = ABSOLUTE(.);
+    *(.NMIExceptionVector.literal)
+    _NMIExceptionVector_literal_end = ABSOLUTE(.);
+    _memmap_seg_iram0_11_end = ALIGN(0x8);
+  } >iram0_11_seg :iram0_11_phdr
+
+  .NMIExceptionVector.text : ALIGN(4)
+  {
+    _NMIExceptionVector_text_start = ABSOLUTE(.);
+    KEEP (*(.NMIExceptionVector.text))
+    _NMIExceptionVector_text_end = ABSOLUTE(.);
+    _memmap_seg_iram0_12_end = ALIGN(0x8);
+  } >iram0_12_seg :iram0_12_phdr
+
+  .KernelExceptionVector.literal : ALIGN(4)
+  {
+    _KernelExceptionVector_literal_start = ABSOLUTE(.);
+    *(.KernelExceptionVector.literal)
+    _KernelExceptionVector_literal_end = ABSOLUTE(.);
+    _memmap_seg_iram0_13_end = ALIGN(0x8);
+  } >iram0_13_seg :iram0_13_phdr
+
+  .KernelExceptionVector.text : ALIGN(4)
+  {
+    _KernelExceptionVector_text_start = ABSOLUTE(.);
+    KEEP (*(.KernelExceptionVector.text))
+    _KernelExceptionVector_text_end = ABSOLUTE(.);
+    _memmap_seg_iram0_14_end = ALIGN(0x8);
+  } >iram0_14_seg :iram0_14_phdr
+
+  .UserExceptionVector.literal : ALIGN(4)
+  {
+    _UserExceptionVector_literal_start = ABSOLUTE(.);
+    *(.UserExceptionVector.literal)
+    _UserExceptionVector_literal_end = ABSOLUTE(.);
+    _memmap_seg_iram0_15_end = ALIGN(0x8);
+  } >iram0_15_seg :iram0_15_phdr
+
+  .UserExceptionVector.text : ALIGN(4)
+  {
+    _UserExceptionVector_text_start = ABSOLUTE(.);
+    KEEP (*(.UserExceptionVector.text))
+    _UserExceptionVector_text_end = ABSOLUTE(.);
+    _memmap_seg_iram0_16_end = ALIGN(0x8);
+  } >iram0_16_seg :iram0_16_phdr
+
+  .DoubleExceptionVector.literal : ALIGN(4)
+  {
+    _DoubleExceptionVector_literal_start = ABSOLUTE(.);
+    *(.DoubleExceptionVector.literal)
+    _DoubleExceptionVector_literal_end = ABSOLUTE(.);
+    _memmap_seg_iram0_17_end = ALIGN(0x8);
+  } >iram0_17_seg :iram0_17_phdr
+
+  .DoubleExceptionVector.text : ALIGN(4)
+  {
+    _DoubleExceptionVector_text_start = ABSOLUTE(.);
+    KEEP (*(.DoubleExceptionVector.text))
+    _DoubleExceptionVector_text_end = ABSOLUTE(.);
+    _memmap_seg_iram0_18_end = ALIGN(0x8);
+  } >iram0_18_seg :iram0_18_phdr
+
+  .Reset.text : ALIGN(4)
+  {
+    _Reset_text_start = ABSOLUTE(.);
+    *(.Reset.text)
+    _Reset_text_end = ABSOLUTE(.);
+  } >iram0_19_seg :iram0_19_phdr
+
+  .iram0.text : ALIGN(4)
+  {
+    _iram0_text_start = ABSOLUTE(.);
+    *(.iram0.literal .iram.literal .iram.text.literal .iram0.text .iram.text)
+    _iram0_text_end = ABSOLUTE(.);
+    _memmap_seg_iram0_19_end = ALIGN(0x8);
+  } >iram0_19_seg :iram0_19_phdr
+
+  .sram.shareaddr : ALIGN(4)
+  {
+    _sram_shareaddr_start = ABSOLUTE(.);
+    *(.sram.shareaddr)
+    _sram_shareaddr_end = ABSOLUTE(.);
+  } >sram0_seg :sram0_phdr
+
+  .sram.rodata : ALIGN(4)
+  {
+    _sram_rodata_start = ABSOLUTE(.);
+    *(.sram.rodata)
+    _sram_rodata_end = ABSOLUTE(.);
+  } >sram0_seg :sram0_phdr
+
+  .rodata : ALIGN(4)
+  {
+    _rodata_start = ABSOLUTE(.);
+    *(.rodata)
+    *(.rodata.*)
+    *(.gnu.linkonce.r.*)
+    *(.rodata1)
+    __XT_EXCEPTION_TABLE__ = ABSOLUTE(.);
+    KEEP (*(.xt_except_table))
+    KEEP (*(.gcc_except_table))
+    *(.gnu.linkonce.e.*)
+    *(.gnu.version_r)
+    KEEP (*(.eh_frame))
+    /*  C++ constructor and destructor tables, properly ordered:  */
+    KEEP (*crtbegin.o(.ctors))
+    KEEP (*(EXCLUDE_FILE (*crtend.o) .ctors))
+    KEEP (*(SORT(.ctors.*)))
+    KEEP (*(.ctors))
+    KEEP (*crtbegin.o(.dtors))
+    KEEP (*(EXCLUDE_FILE (*crtend.o) .dtors))
+    KEEP (*(SORT(.dtors.*)))
+    KEEP (*(.dtors))
+    /*  C++ exception handlers table:  */
+    __XT_EXCEPTION_DESCS__ = ABSOLUTE(.);
+    *(.xt_except_desc)
+    *(.gnu.linkonce.h.*)
+    __XT_EXCEPTION_DESCS_END__ = ABSOLUTE(.);
+    *(.xt_except_desc_end)
+    *(.dynamic)
+    *(.gnu.version_d)
+    . = ALIGN(4);		/* this table MUST be 4-byte aligned */
+    _bss_table_start = ABSOLUTE(.);
+    LONG(_vlpd_bss_start)
+    LONG(_vlpd_bss_end)
+    LONG(_efr_fr_hr_vlpd_bss_start)
+    LONG(_efr_fr_hr_vlpd_bss_end)
+    LONG(_amr_vlpd_bss_start)
+    LONG(_amr_vlpd_bss_end)
+    LONG(_amrwb_vlpd_bss_start)
+    LONG(_amrwb_vlpd_bss_end)
+    LONG(_ulpp_bss_start)
+    LONG(_ulpp_bss_end)
+    LONG(_dtsv3_bss_start)
+    LONG(_dtsv3_bss_end)
+    LONG(_dtsv4_bss_start)
+    LONG(_dtsv4_bss_end)
+    LONG(_dram0_bss_start)
+    LONG(_dram0_bss_end)
+    LONG(_bss_start)
+    LONG(_bss_end)
+    _bss_table_end = ABSOLUTE(.);
+    _rodata_end = ABSOLUTE(.);
+  } >sram0_seg :sram0_phdr
+
+  .sram.text : ALIGN(4)
+  {
+    _sram_text_start = ABSOLUTE(.);
+    *(.sram.literal .sram.text)
+    _sram_text_end = ABSOLUTE(.);
+  } >sram0_seg :sram0_phdr
+
+  .text : ALIGN(4)
+  {
+    _stext = .;
+    _text_start = ABSOLUTE(.);
+    *(.entry.text)
+    *(.init.literal)
+    KEEP(*(.init))
+    *(.literal .text .literal.* .text.* .stub .gnu.warning .gnu.linkonce.literal.* .gnu.linkonce.t.*.literal .gnu.linkonce.t.*)
+    *(.fini.literal)
+    KEEP(*(.fini))
+    *(.gnu.version)
+    _text_end = ABSOLUTE(.);
+    _etext = .;
+  } >sram0_seg :sram0_phdr
+
+  .sram.data : ALIGN(4)
+  {
+    _sram_data_start = ABSOLUTE(.);
+    *(.sram.data)
+    _sram_data_end = ABSOLUTE(.);
+  } >sram0_seg :sram0_phdr
+
+  .data : ALIGN(4)
+  {
+    _data_start = ABSOLUTE(.);
+    *(.data)
+    *(.data.*)
+    *(.gnu.linkonce.d.*)
+    KEEP(*(.gnu.linkonce.d.*personality*))
+    *(.data1)
+    *(.sdata)
+    *(.sdata.*)
+    *(.gnu.linkonce.s.*)
+    *(.sdata2)
+    *(.sdata2.*)
+    *(.gnu.linkonce.s2.*)
+    KEEP(*(.jcr))
+    _data_end = ABSOLUTE(.);
+  } >sram0_seg :sram0_phdr
+
+  .sram.uninit : ALIGN(4)
+  {
+    _sram_uninit_start = ABSOLUTE(.);
+    *(.sram.uninit)
+    _sram_uninit_end = ABSOLUTE(.);
+  } >sram0_seg :sram0_phdr
+
+  .bss (NOLOAD) : ALIGN(8)
+  {
+    . = ALIGN (8);
+    _bss_start = ABSOLUTE(.);
+    *(.dynsbss)
+    *(.sbss)
+    *(.sbss.*)
+    *(.gnu.linkonce.sb.*)
+    *(.scommon)
+    *(.sbss2)
+    *(.sbss2.*)
+    *(.gnu.linkonce.sb2.*)
+    *(.dynbss)
+    *(.bss)
+    *(.bss.*)
+    *(.gnu.linkonce.b.*)
+    *(COMMON)
+    *(.sram.pool.bss)
+    *(.sram.bss)
+    . = ALIGN (8);
+    _bss_end = ABSOLUTE(.);
+    _memmap_seg_sram0_end = ALIGN(0x8);
+  } >sram0_seg :sram0_bss_phdr
+  .debug  0 :  { *(.debug) }
+  .line  0 :  { *(.line) }
+  .debug_srcinfo  0 :  { *(.debug_srcinfo) }
+  .debug_sfnames  0 :  { *(.debug_sfnames) }
+  .debug_aranges  0 :  { *(.debug_aranges) }
+  .debug_pubnames  0 :  { *(.debug_pubnames) }
+  .debug_info  0 :  { *(.debug_info) }
+  .debug_abbrev  0 :  { *(.debug_abbrev) }
+  .debug_line  0 :  { *(.debug_line) }
+  .debug_frame  0 :  { *(.debug_frame) }
+  .debug_str  0 :  { *(.debug_str) }
+  .debug_loc  0 :  { *(.debug_loc) }
+  .debug_macinfo  0 :  { *(.debug_macinfo) }
+  .debug_weaknames  0 :  { *(.debug_weaknames) }
+  .debug_funcnames  0 :  { *(.debug_funcnames) }
+  .debug_typenames  0 :  { *(.debug_typenames) }
+  .debug_varnames  0 :  { *(.debug_varnames) }
+  .xt.insn 0 :
+  {
+    KEEP (*(.xt.insn))
+    KEEP (*(.gnu.linkonce.x.*))
+  }
+  .xt.prop 0 :
+  {
+    KEEP (*(.xt.prop))
+    KEEP (*(.xt.prop.*))
+    KEEP (*(.gnu.linkonce.prop.*))
+  }
+  .xt.lit 0 :
+  {
+    KEEP (*(.xt.lit))
+    KEEP (*(.xt.lit.*))
+    KEEP (*(.gnu.linkonce.p.*))
+  }
+  .debug.xt.callgraph 0 :
+  {
+    KEEP (*(.debug.xt.callgraph .debug.xt.callgraph.* .gnu.linkonce.xt.callgraph.*))
+  }
+}
+
diff --git a/hifi/xaf/hifi-dpf/build_hikey/hifi_hikey_lsp/ldscripts/elf32xtensa.xn b/hifi/xaf/hifi-dpf/build_hikey/hifi_hikey_lsp/ldscripts/elf32xtensa.xn
new file mode 100644
index 0000000..17c05e1
--- /dev/null
+++ b/hifi/xaf/hifi-dpf/build_hikey/hifi_hikey_lsp/ldscripts/elf32xtensa.xn
@@ -0,0 +1,827 @@
+/* This linker script generated from xt-genldscripts.tpp for LSP hifi_hikey_lsp */
+/* Linker Script for ld -n */
+MEMORY
+{
+  sram0_seg :                         	org = 0xC0000000, len = 0x408000
+  old_vlpd_seg :                      	org = 0xC0408000, len = 0x10000
+  efr_fr_hr_vlpd_seg :                	org = 0xC0418000, len = 0x10000
+  amr_vlpd_seg :                      	org = 0xC0428000, len = 0x10000
+  amrwb_vlpd_seg :                    	org = 0xC0438000, len = 0x10000
+  evrc_evrcb_vlpt_seg :               	org = 0xC0448000, len = 0x48000
+  efr_fr_hr_vlpt_seg :                	org = 0xC0490000, len = 0x30000
+  amr_vlpt_seg :                      	org = 0xC04C0000, len = 0x20000
+  amrwb_vlpt_seg :                    	org = 0xC04E0000, len = 0x30000
+  vlpt_seg :                          	org = 0xC0510000, len = 0x48000
+  vlpd_seg :                          	org = 0xC0558000, len = 0x20000
+  ulpp_seg :                          	org = 0xC0578000, len = 0x40000
+  dtsv3_seg :                         	org = 0xC05B8000, len = 0x20000
+  dtsv4_seg :                         	org = 0xC05D8000, len = 0x28000
+  dram0_0_seg :                       	org = 0xE8058000, len = 0x28000
+  iram0_0_seg :                       	org = 0xE8080000, len = 0x300
+  iram0_1_seg :                       	org = 0xE8080300, len = 0x100
+  iram0_2_seg :                       	org = 0xE8080400, len = 0x178
+  iram0_3_seg :                       	org = 0xE8080578, len = 0x8
+  iram0_4_seg :                       	org = 0xE8080580, len = 0x38
+  iram0_5_seg :                       	org = 0xE80805B8, len = 0x8
+  iram0_6_seg :                       	org = 0xE80805C0, len = 0x38
+  iram0_7_seg :                       	org = 0xE80805F8, len = 0x8
+  iram0_8_seg :                       	org = 0xE8080600, len = 0x38
+  iram0_9_seg :                       	org = 0xE8080638, len = 0x8
+  iram0_10_seg :                      	org = 0xE8080640, len = 0x38
+  iram0_11_seg :                      	org = 0xE8080678, len = 0x48
+  iram0_12_seg :                      	org = 0xE80806C0, len = 0x38
+  iram0_13_seg :                      	org = 0xE80806F8, len = 0x8
+  iram0_14_seg :                      	org = 0xE8080700, len = 0x38
+  iram0_15_seg :                      	org = 0xE8080738, len = 0x8
+  iram0_16_seg :                      	org = 0xE8080740, len = 0x38
+  iram0_17_seg :                      	org = 0xE8080778, len = 0x48
+  iram0_18_seg :                      	org = 0xE80807C0, len = 0x40
+  iram0_19_seg :                      	org = 0xE8080800, len = 0xB800
+}
+
+PHDRS
+{
+  sram0_phdr PT_LOAD;
+  sram0_bss_phdr PT_LOAD;
+  old_vlpd_phdr PT_LOAD;
+  old_vlpd_bss_phdr PT_LOAD;
+  efr_fr_hr_vlpd_phdr PT_LOAD;
+  efr_fr_hr_vlpd_bss_phdr PT_LOAD;
+  amr_vlpd_phdr PT_LOAD;
+  amr_vlpd_bss_phdr PT_LOAD;
+  amrwb_vlpd_phdr PT_LOAD;
+  amrwb_vlpd_bss_phdr PT_LOAD;
+  evrc_evrcb_vlpt_phdr PT_LOAD;
+  efr_fr_hr_vlpt_phdr PT_LOAD;
+  amr_vlpt_phdr PT_LOAD;
+  amrwb_vlpt_phdr PT_LOAD;
+  vlpt_phdr PT_LOAD;
+  vlpd_phdr PT_LOAD;
+  ulpp_phdr PT_LOAD;
+  ulpp_bss_phdr PT_LOAD;
+  dtsv3_phdr PT_LOAD;
+  dtsv3_bss_phdr PT_LOAD;
+  dtsv4_phdr PT_LOAD;
+  dtsv4_bss_phdr PT_LOAD;
+  dram0_0_phdr PT_LOAD;
+  dram0_0_bss_phdr PT_LOAD;
+  iram0_0_phdr PT_LOAD;
+  iram0_1_phdr PT_LOAD;
+  iram0_2_phdr PT_LOAD;
+  iram0_3_phdr PT_LOAD;
+  iram0_4_phdr PT_LOAD;
+  iram0_5_phdr PT_LOAD;
+  iram0_6_phdr PT_LOAD;
+  iram0_7_phdr PT_LOAD;
+  iram0_8_phdr PT_LOAD;
+  iram0_9_phdr PT_LOAD;
+  iram0_10_phdr PT_LOAD;
+  iram0_11_phdr PT_LOAD;
+  iram0_12_phdr PT_LOAD;
+  iram0_13_phdr PT_LOAD;
+  iram0_14_phdr PT_LOAD;
+  iram0_15_phdr PT_LOAD;
+  iram0_16_phdr PT_LOAD;
+  iram0_17_phdr PT_LOAD;
+  iram0_18_phdr PT_LOAD;
+  iram0_19_phdr PT_LOAD;
+}
+
+
+/*  Default entry point:  */
+ENTRY(_ResetVector)
+
+/*  Memory boundary addresses:  */
+_memmap_mem_iram0_start = 0xe8080000;
+_memmap_mem_iram0_end   = 0xe808c000;
+_memmap_mem_dram0_start = 0xe8058000;
+_memmap_mem_dram0_end   = 0xe8080000;
+_memmap_mem_sram_start = 0xc0000000;
+_memmap_mem_sram_end   = 0xc0600000;
+
+/*  Memory segment boundary addresses:  */
+_memmap_seg_sram0_start = 0xc0000000;
+_memmap_seg_sram0_max   = 0xc0408000;
+_memmap_seg_old_vlpd_start = 0xc0408000;
+_memmap_seg_old_vlpd_max   = 0xc0418000;
+_memmap_seg_efr_fr_hr_vlpd_start = 0xc0418000;
+_memmap_seg_efr_fr_hr_vlpd_max   = 0xc0428000;
+_memmap_seg_amr_vlpd_start = 0xc0428000;
+_memmap_seg_amr_vlpd_max   = 0xc0438000;
+_memmap_seg_amrwb_vlpd_start = 0xc0438000;
+_memmap_seg_amrwb_vlpd_max   = 0xc0448000;
+_memmap_seg_evrc_evrcb_vlpt_start = 0xc0448000;
+_memmap_seg_evrc_evrcb_vlpt_max   = 0xc0490000;
+_memmap_seg_efr_fr_hr_vlpt_start = 0xc0490000;
+_memmap_seg_efr_fr_hr_vlpt_max   = 0xc04c0000;
+_memmap_seg_amr_vlpt_start = 0xc04c0000;
+_memmap_seg_amr_vlpt_max   = 0xc04e0000;
+_memmap_seg_amrwb_vlpt_start = 0xc04e0000;
+_memmap_seg_amrwb_vlpt_max   = 0xc0510000;
+_memmap_seg_vlpt_start = 0xc0510000;
+_memmap_seg_vlpt_max   = 0xc0558000;
+_memmap_seg_vlpd_start = 0xc0558000;
+_memmap_seg_vlpd_max   = 0xc0578000;
+_memmap_seg_ulpp_start = 0xc0578000;
+_memmap_seg_ulpp_max   = 0xc05b8000;
+_memmap_seg_dtsv3_start = 0xc05b8000;
+_memmap_seg_dtsv3_max   = 0xc05d8000;
+_memmap_seg_dtsv4_start = 0xc05d8000;
+_memmap_seg_dtsv4_max   = 0xc0600000;
+_memmap_seg_dram0_0_start = 0xe8058000;
+_memmap_seg_dram0_0_max   = 0xe8080000;
+_memmap_seg_iram0_0_start = 0xe8080000;
+_memmap_seg_iram0_0_max   = 0xe8080300;
+_memmap_seg_iram0_1_start = 0xe8080300;
+_memmap_seg_iram0_1_max   = 0xe8080400;
+_memmap_seg_iram0_2_start = 0xe8080400;
+_memmap_seg_iram0_2_max   = 0xe8080578;
+_memmap_seg_iram0_3_start = 0xe8080578;
+_memmap_seg_iram0_3_max   = 0xe8080580;
+_memmap_seg_iram0_4_start = 0xe8080580;
+_memmap_seg_iram0_4_max   = 0xe80805b8;
+_memmap_seg_iram0_5_start = 0xe80805b8;
+_memmap_seg_iram0_5_max   = 0xe80805c0;
+_memmap_seg_iram0_6_start = 0xe80805c0;
+_memmap_seg_iram0_6_max   = 0xe80805f8;
+_memmap_seg_iram0_7_start = 0xe80805f8;
+_memmap_seg_iram0_7_max   = 0xe8080600;
+_memmap_seg_iram0_8_start = 0xe8080600;
+_memmap_seg_iram0_8_max   = 0xe8080638;
+_memmap_seg_iram0_9_start = 0xe8080638;
+_memmap_seg_iram0_9_max   = 0xe8080640;
+_memmap_seg_iram0_10_start = 0xe8080640;
+_memmap_seg_iram0_10_max   = 0xe8080678;
+_memmap_seg_iram0_11_start = 0xe8080678;
+_memmap_seg_iram0_11_max   = 0xe80806c0;
+_memmap_seg_iram0_12_start = 0xe80806c0;
+_memmap_seg_iram0_12_max   = 0xe80806f8;
+_memmap_seg_iram0_13_start = 0xe80806f8;
+_memmap_seg_iram0_13_max   = 0xe8080700;
+_memmap_seg_iram0_14_start = 0xe8080700;
+_memmap_seg_iram0_14_max   = 0xe8080738;
+_memmap_seg_iram0_15_start = 0xe8080738;
+_memmap_seg_iram0_15_max   = 0xe8080740;
+_memmap_seg_iram0_16_start = 0xe8080740;
+_memmap_seg_iram0_16_max   = 0xe8080778;
+_memmap_seg_iram0_17_start = 0xe8080778;
+_memmap_seg_iram0_17_max   = 0xe80807c0;
+_memmap_seg_iram0_18_start = 0xe80807c0;
+_memmap_seg_iram0_18_max   = 0xe8080800;
+_memmap_seg_iram0_19_start = 0xe8080800;
+_memmap_seg_iram0_19_max   = 0xe808c000;
+
+_rom_store_table = 0;
+PROVIDE(_memmap_vecbase_reset = 0xe8080400);
+PROVIDE(_memmap_reset_vector = 0xe8080000);
+/* Various memory-map dependent cache attribute settings: */
+_memmap_cacheattr_wb_base = 0x44000000;
+_memmap_cacheattr_wt_base = 0x11000000;
+_memmap_cacheattr_bp_base = 0x22000000;
+_memmap_cacheattr_unused_mask = 0x00FFFFFF;
+_memmap_cacheattr_wb_trapnull = 0x4422222F;
+_memmap_cacheattr_wba_trapnull = 0x4422222F;
+_memmap_cacheattr_wbna_trapnull = 0x5522222F;
+_memmap_cacheattr_wt_trapnull = 0x1122222F;
+_memmap_cacheattr_bp_trapnull = 0x2222222F;
+_memmap_cacheattr_wb_strict = 0x44FFFFFF;
+_memmap_cacheattr_wt_strict = 0x11FFFFFF;
+_memmap_cacheattr_bp_strict = 0x22FFFFFF;
+_memmap_cacheattr_wb_allvalid = 0x44222222;
+_memmap_cacheattr_wt_allvalid = 0x11222222;
+_memmap_cacheattr_bp_allvalid = 0x22222222;
+PROVIDE(_memmap_cacheattr_reset = _memmap_cacheattr_wb_trapnull);
+
+SECTIONS
+{
+
+  .vlpd.rodata : ALIGN(4)
+  {
+    _vlpd_rodata_start = ABSOLUTE(.);
+    *(.vlpd.rodata)
+    _vlpd_rodata_end = ABSOLUTE(.);
+  } >old_vlpd_seg :old_vlpd_phdr
+
+  .vlpd.data : ALIGN(4)
+  {
+    _vlpd_data_start = ABSOLUTE(.);
+    *(.vlpd.data)
+    _vlpd_data_end = ABSOLUTE(.);
+  } >old_vlpd_seg :old_vlpd_phdr
+
+  .vlpd.bss (NOLOAD) : ALIGN(8)
+  {
+    . = ALIGN (8);
+    _vlpd_bss_start = ABSOLUTE(.);
+    *(.vlpd.bss)
+    . = ALIGN (8);
+    _vlpd_bss_end = ABSOLUTE(.);
+    _memmap_seg_old_vlpd_end = ALIGN(0x8);
+  } >old_vlpd_seg :old_vlpd_bss_phdr
+
+  .efr_fr_hr_vlpd.rodata : ALIGN(4)
+  {
+    _efr_fr_hr_vlpd_rodata_start = ABSOLUTE(.);
+    *(.efr_fr_hr_vlpd.rodata)
+    _efr_fr_hr_vlpd_rodata_end = ABSOLUTE(.);
+  } >efr_fr_hr_vlpd_seg :efr_fr_hr_vlpd_phdr
+
+  .efr_fr_hr_vlpd.data : ALIGN(4)
+  {
+    _efr_fr_hr_vlpd_data_start = ABSOLUTE(.);
+    *(.efr_fr_hr_vlpd.data)
+    _efr_fr_hr_vlpd_data_end = ABSOLUTE(.);
+  } >efr_fr_hr_vlpd_seg :efr_fr_hr_vlpd_phdr
+
+  .efr_fr_hr_vlpd.bss (NOLOAD) : ALIGN(8)
+  {
+    . = ALIGN (8);
+    _efr_fr_hr_vlpd_bss_start = ABSOLUTE(.);
+    *(.efr_fr_hr_vlpd.bss)
+    . = ALIGN (8);
+    _efr_fr_hr_vlpd_bss_end = ABSOLUTE(.);
+    _memmap_seg_efr_fr_hr_vlpd_end = ALIGN(0x8);
+  } >efr_fr_hr_vlpd_seg :efr_fr_hr_vlpd_bss_phdr
+
+  .amr_vlpd.rodata : ALIGN(4)
+  {
+    _amr_vlpd_rodata_start = ABSOLUTE(.);
+    *(.amr_vlpd.rodata)
+    _amr_vlpd_rodata_end = ABSOLUTE(.);
+  } >amr_vlpd_seg :amr_vlpd_phdr
+
+  .amr_vlpd.data : ALIGN(4)
+  {
+    _amr_vlpd_data_start = ABSOLUTE(.);
+    *(.amr_vlpd.data)
+    _amr_vlpd_data_end = ABSOLUTE(.);
+  } >amr_vlpd_seg :amr_vlpd_phdr
+
+  .amr_vlpd.bss (NOLOAD) : ALIGN(8)
+  {
+    . = ALIGN (8);
+    _amr_vlpd_bss_start = ABSOLUTE(.);
+    *(.amr_vlpd.bss)
+    . = ALIGN (8);
+    _amr_vlpd_bss_end = ABSOLUTE(.);
+    _memmap_seg_amr_vlpd_end = ALIGN(0x8);
+  } >amr_vlpd_seg :amr_vlpd_bss_phdr
+
+  .amrwb_vlpd.rodata : ALIGN(4)
+  {
+    _amrwb_vlpd_rodata_start = ABSOLUTE(.);
+    *(.amrwb_vlpd.rodata)
+    _amrwb_vlpd_rodata_end = ABSOLUTE(.);
+  } >amrwb_vlpd_seg :amrwb_vlpd_phdr
+
+  .amrwb_vlpd.data : ALIGN(4)
+  {
+    _amrwb_vlpd_data_start = ABSOLUTE(.);
+    *(.amrwb_vlpd.data)
+    _amrwb_vlpd_data_end = ABSOLUTE(.);
+  } >amrwb_vlpd_seg :amrwb_vlpd_phdr
+
+  .amrwb_vlpd.bss (NOLOAD) : ALIGN(8)
+  {
+    . = ALIGN (8);
+    _amrwb_vlpd_bss_start = ABSOLUTE(.);
+    *(.amrwb_vlpd.bss)
+    . = ALIGN (8);
+    _amrwb_vlpd_bss_end = ABSOLUTE(.);
+    _memmap_seg_amrwb_vlpd_end = ALIGN(0x8);
+  } >amrwb_vlpd_seg :amrwb_vlpd_bss_phdr
+
+  .evrc_evrcb_vlpt.text : ALIGN(4)
+  {
+    _evrc_evrcb_vlpt_text_start = ABSOLUTE(.);
+    *(.evrc_evrcb_vlpt.literal .evrc_evrcb_vlpt.text)
+    _evrc_evrcb_vlpt_text_end = ABSOLUTE(.);
+    _memmap_seg_evrc_evrcb_vlpt_end = ALIGN(0x8);
+  } >evrc_evrcb_vlpt_seg :evrc_evrcb_vlpt_phdr
+
+  .efr_fr_hr_vlpt.text : ALIGN(4)
+  {
+    _efr_fr_hr_vlpt_text_start = ABSOLUTE(.);
+    *(.efr_fr_hr_vlpt.literal .efr_fr_hr_vlpt.text)
+    _efr_fr_hr_vlpt_text_end = ABSOLUTE(.);
+    _memmap_seg_efr_fr_hr_vlpt_end = ALIGN(0x8);
+  } >efr_fr_hr_vlpt_seg :efr_fr_hr_vlpt_phdr
+
+  .amr_vlpt.text : ALIGN(4)
+  {
+    _amr_vlpt_text_start = ABSOLUTE(.);
+    *(.amr_vlpt.literal .amr_vlpt.text)
+    _amr_vlpt_text_end = ABSOLUTE(.);
+    _memmap_seg_amr_vlpt_end = ALIGN(0x8);
+  } >amr_vlpt_seg :amr_vlpt_phdr
+
+  .amrwb_vlpt.text : ALIGN(4)
+  {
+    _amrwb_vlpt_text_start = ABSOLUTE(.);
+    *(.amrwb_vlpt.literal .amrwb_vlpt.text)
+    _amrwb_vlpt_text_end = ABSOLUTE(.);
+    _memmap_seg_amrwb_vlpt_end = ALIGN(0x8);
+  } >amrwb_vlpt_seg :amrwb_vlpt_phdr
+
+  .vlpt.text : ALIGN(4)
+  {
+    _vlpt_text_start = ABSOLUTE(.);
+    *(.vlpt.literal .vlpt.text)
+    _vlpt_text_end = ABSOLUTE(.);
+    _memmap_seg_vlpt_end = ALIGN(0x8);
+  } >vlpt_seg :vlpt_phdr
+
+  .low_power_dyn_alloc : ALIGN(4)
+  {
+    _low_power_dyn_alloc_start = ABSOLUTE(.);
+    *(.low_power_dyn_alloc)
+    _low_power_dyn_alloc_end = ABSOLUTE(.);
+    _memmap_seg_vlpd_end = ALIGN(0x8);
+  } >vlpd_seg :vlpd_phdr
+
+  .ulpp.rodata : ALIGN(4)
+  {
+    _ulpp_rodata_start = ABSOLUTE(.);
+    *(.ulpp.rodata)
+    _ulpp_rodata_end = ABSOLUTE(.);
+  } >ulpp_seg :ulpp_phdr
+
+  .ulpp.data : ALIGN(4)
+  {
+    _ulpp_data_start = ABSOLUTE(.);
+    *(.ulpp.data)
+    _ulpp_data_end = ABSOLUTE(.);
+  } >ulpp_seg :ulpp_phdr
+
+  .ulpp.text : ALIGN(4)
+  {
+    _ulpp_text_start = ABSOLUTE(.);
+    *(.ulpp.literal .ulpp.text)
+    _ulpp_text_end = ABSOLUTE(.);
+  } >ulpp_seg :ulpp_phdr
+
+  .ulpp.bss (NOLOAD) : ALIGN(8)
+  {
+    . = ALIGN (8);
+    _ulpp_bss_start = ABSOLUTE(.);
+    *(.ulpp.bss)
+    . = ALIGN (8);
+    _ulpp_bss_end = ABSOLUTE(.);
+    _memmap_seg_ulpp_end = ALIGN(0x8);
+  } >ulpp_seg :ulpp_bss_phdr
+
+  .dtsv3.rodata : ALIGN(4)
+  {
+    _dtsv3_rodata_start = ABSOLUTE(.);
+    *(.dtsv3.rodata)
+    _dtsv3_rodata_end = ABSOLUTE(.);
+  } >dtsv3_seg :dtsv3_phdr
+
+  .dtsv3.data : ALIGN(4)
+  {
+    _dtsv3_data_start = ABSOLUTE(.);
+    *(.dtsv3.data)
+    _dtsv3_data_end = ABSOLUTE(.);
+  } >dtsv3_seg :dtsv3_phdr
+
+  .dtsv3.text : ALIGN(4)
+  {
+    _dtsv3_text_start = ABSOLUTE(.);
+    *(.dtsv3.literal .dtsv3.text)
+    _dtsv3_text_end = ABSOLUTE(.);
+  } >dtsv3_seg :dtsv3_phdr
+
+  .dtsv3.bss (NOLOAD) : ALIGN(8)
+  {
+    . = ALIGN (8);
+    _dtsv3_bss_start = ABSOLUTE(.);
+    *(.dtsv3.bss)
+    . = ALIGN (8);
+    _dtsv3_bss_end = ABSOLUTE(.);
+    _memmap_seg_dtsv3_end = ALIGN(0x8);
+  } >dtsv3_seg :dtsv3_bss_phdr
+
+  .dtsv4.rodata : ALIGN(4)
+  {
+    _dtsv4_rodata_start = ABSOLUTE(.);
+    *(.dtsv4.rodata)
+    _dtsv4_rodata_end = ABSOLUTE(.);
+  } >dtsv4_seg :dtsv4_phdr
+
+  .dtsv4.data : ALIGN(4)
+  {
+    _dtsv4_data_start = ABSOLUTE(.);
+    *(.dtsv4.data)
+    _dtsv4_data_end = ABSOLUTE(.);
+  } >dtsv4_seg :dtsv4_phdr
+
+  .dtsv4.text : ALIGN(4)
+  {
+    _dtsv4_text_start = ABSOLUTE(.);
+    *(.dtsv4.literal .dtsv4.text)
+    _dtsv4_text_end = ABSOLUTE(.);
+  } >dtsv4_seg :dtsv4_phdr
+
+  .dtsv4.bss (NOLOAD) : ALIGN(8)
+  {
+    . = ALIGN (8);
+    _dtsv4_bss_start = ABSOLUTE(.);
+    *(.dtsv4.bss)
+    . = ALIGN (8);
+    _dtsv4_bss_end = ABSOLUTE(.);
+    _memmap_seg_dtsv4_end = ALIGN(0x8);
+  } >dtsv4_seg :dtsv4_bss_phdr
+
+  .dram0.rodata : ALIGN(4)
+  {
+    _dram0_rodata_start = ABSOLUTE(.);
+    *(.dram0.rodata)
+    *(.dram.rodata)
+    _dram0_rodata_end = ABSOLUTE(.);
+  } >dram0_0_seg :dram0_0_phdr
+
+  .dram0.literal : ALIGN(4)
+  {
+    _dram0_literal_start = ABSOLUTE(.);
+    *(.dram0.literal)
+    *(.dram.literal)
+    _dram0_literal_end = ABSOLUTE(.);
+  } >dram0_0_seg :dram0_0_phdr
+
+  .dram0.data : ALIGN(4)
+  {
+    _dram0_data_start = ABSOLUTE(.);
+    *(.dram0.data)
+    *(.dram.data)
+    _dram0_data_end = ABSOLUTE(.);
+  } >dram0_0_seg :dram0_0_phdr
+
+  .dram0.bss (NOLOAD) : ALIGN(8)
+  {
+    . = ALIGN (8);
+    _dram0_bss_start = ABSOLUTE(.);
+    *(.dram0.bss)
+    *(.om.debug.bss)
+    *(.os.stack.bss)
+    . = ALIGN (8);
+    _dram0_bss_end = ABSOLUTE(.);
+    _end = ALIGN(0x8);
+    PROVIDE(end = ALIGN(0x8));
+    _stack_sentry = ALIGN(0x8);
+    _memmap_seg_dram0_0_end = ALIGN(0x8);
+  } >dram0_0_seg :dram0_0_bss_phdr
+  __stack = 0xe8080000;
+  _heap_sentry = 0xe8080000;
+
+  .ResetVector.text : ALIGN(4)
+  {
+    _ResetVector_text_start = ABSOLUTE(.);
+    KEEP (*(.ResetVector.text))
+    _ResetVector_text_end = ABSOLUTE(.);
+    _memmap_seg_iram0_0_end = ALIGN(0x8);
+  } >iram0_0_seg :iram0_0_phdr
+
+  .Reset.literal : ALIGN(4)
+  {
+    _Reset_literal_start = ABSOLUTE(.);
+    *(.Reset.literal)
+    _Reset_literal_end = ABSOLUTE(.);
+    _memmap_seg_iram0_1_end = ALIGN(0x8);
+  } >iram0_1_seg :iram0_1_phdr
+
+  .WindowVectors.text : ALIGN(4)
+  {
+    _WindowVectors_text_start = ABSOLUTE(.);
+    KEEP (*(.WindowVectors.text))
+    _WindowVectors_text_end = ABSOLUTE(.);
+    _memmap_seg_iram0_2_end = ALIGN(0x8);
+  } >iram0_2_seg :iram0_2_phdr
+
+  .Level2InterruptVector.literal : ALIGN(4)
+  {
+    _Level2InterruptVector_literal_start = ABSOLUTE(.);
+    *(.Level2InterruptVector.literal)
+    _Level2InterruptVector_literal_end = ABSOLUTE(.);
+    _memmap_seg_iram0_3_end = ALIGN(0x8);
+  } >iram0_3_seg :iram0_3_phdr
+
+  .Level2InterruptVector.text : ALIGN(4)
+  {
+    _Level2InterruptVector_text_start = ABSOLUTE(.);
+    KEEP (*(.Level2InterruptVector.text))
+    _Level2InterruptVector_text_end = ABSOLUTE(.);
+    _memmap_seg_iram0_4_end = ALIGN(0x8);
+  } >iram0_4_seg :iram0_4_phdr
+
+  .Level3InterruptVector.literal : ALIGN(4)
+  {
+    _Level3InterruptVector_literal_start = ABSOLUTE(.);
+    *(.Level3InterruptVector.literal)
+    _Level3InterruptVector_literal_end = ABSOLUTE(.);
+    _memmap_seg_iram0_5_end = ALIGN(0x8);
+  } >iram0_5_seg :iram0_5_phdr
+
+  .Level3InterruptVector.text : ALIGN(4)
+  {
+    _Level3InterruptVector_text_start = ABSOLUTE(.);
+    KEEP (*(.Level3InterruptVector.text))
+    _Level3InterruptVector_text_end = ABSOLUTE(.);
+    _memmap_seg_iram0_6_end = ALIGN(0x8);
+  } >iram0_6_seg :iram0_6_phdr
+
+  .Level4InterruptVector.literal : ALIGN(4)
+  {
+    _Level4InterruptVector_literal_start = ABSOLUTE(.);
+    *(.Level4InterruptVector.literal)
+    _Level4InterruptVector_literal_end = ABSOLUTE(.);
+    _memmap_seg_iram0_7_end = ALIGN(0x8);
+  } >iram0_7_seg :iram0_7_phdr
+
+  .Level4InterruptVector.text : ALIGN(4)
+  {
+    _Level4InterruptVector_text_start = ABSOLUTE(.);
+    KEEP (*(.Level4InterruptVector.text))
+    _Level4InterruptVector_text_end = ABSOLUTE(.);
+    _memmap_seg_iram0_8_end = ALIGN(0x8);
+  } >iram0_8_seg :iram0_8_phdr
+
+  .DebugExceptionVector.literal : ALIGN(4)
+  {
+    _DebugExceptionVector_literal_start = ABSOLUTE(.);
+    *(.DebugExceptionVector.literal)
+    _DebugExceptionVector_literal_end = ABSOLUTE(.);
+    _memmap_seg_iram0_9_end = ALIGN(0x8);
+  } >iram0_9_seg :iram0_9_phdr
+
+  .DebugExceptionVector.text : ALIGN(4)
+  {
+    _DebugExceptionVector_text_start = ABSOLUTE(.);
+    KEEP (*(.DebugExceptionVector.text))
+    _DebugExceptionVector_text_end = ABSOLUTE(.);
+    _memmap_seg_iram0_10_end = ALIGN(0x8);
+  } >iram0_10_seg :iram0_10_phdr
+
+  .NMIExceptionVector.literal : ALIGN(4)
+  {
+    _NMIExceptionVector_literal_start = ABSOLUTE(.);
+    *(.NMIExceptionVector.literal)
+    _NMIExceptionVector_literal_end = ABSOLUTE(.);
+    _memmap_seg_iram0_11_end = ALIGN(0x8);
+  } >iram0_11_seg :iram0_11_phdr
+
+  .NMIExceptionVector.text : ALIGN(4)
+  {
+    _NMIExceptionVector_text_start = ABSOLUTE(.);
+    KEEP (*(.NMIExceptionVector.text))
+    _NMIExceptionVector_text_end = ABSOLUTE(.);
+    _memmap_seg_iram0_12_end = ALIGN(0x8);
+  } >iram0_12_seg :iram0_12_phdr
+
+  .KernelExceptionVector.literal : ALIGN(4)
+  {
+    _KernelExceptionVector_literal_start = ABSOLUTE(.);
+    *(.KernelExceptionVector.literal)
+    _KernelExceptionVector_literal_end = ABSOLUTE(.);
+    _memmap_seg_iram0_13_end = ALIGN(0x8);
+  } >iram0_13_seg :iram0_13_phdr
+
+  .KernelExceptionVector.text : ALIGN(4)
+  {
+    _KernelExceptionVector_text_start = ABSOLUTE(.);
+    KEEP (*(.KernelExceptionVector.text))
+    _KernelExceptionVector_text_end = ABSOLUTE(.);
+    _memmap_seg_iram0_14_end = ALIGN(0x8);
+  } >iram0_14_seg :iram0_14_phdr
+
+  .UserExceptionVector.literal : ALIGN(4)
+  {
+    _UserExceptionVector_literal_start = ABSOLUTE(.);
+    *(.UserExceptionVector.literal)
+    _UserExceptionVector_literal_end = ABSOLUTE(.);
+    _memmap_seg_iram0_15_end = ALIGN(0x8);
+  } >iram0_15_seg :iram0_15_phdr
+
+  .UserExceptionVector.text : ALIGN(4)
+  {
+    _UserExceptionVector_text_start = ABSOLUTE(.);
+    KEEP (*(.UserExceptionVector.text))
+    _UserExceptionVector_text_end = ABSOLUTE(.);
+    _memmap_seg_iram0_16_end = ALIGN(0x8);
+  } >iram0_16_seg :iram0_16_phdr
+
+  .DoubleExceptionVector.literal : ALIGN(4)
+  {
+    _DoubleExceptionVector_literal_start = ABSOLUTE(.);
+    *(.DoubleExceptionVector.literal)
+    _DoubleExceptionVector_literal_end = ABSOLUTE(.);
+    _memmap_seg_iram0_17_end = ALIGN(0x8);
+  } >iram0_17_seg :iram0_17_phdr
+
+  .DoubleExceptionVector.text : ALIGN(4)
+  {
+    _DoubleExceptionVector_text_start = ABSOLUTE(.);
+    KEEP (*(.DoubleExceptionVector.text))
+    _DoubleExceptionVector_text_end = ABSOLUTE(.);
+    _memmap_seg_iram0_18_end = ALIGN(0x8);
+  } >iram0_18_seg :iram0_18_phdr
+
+  .Reset.text : ALIGN(4)
+  {
+    _Reset_text_start = ABSOLUTE(.);
+    *(.Reset.text)
+    _Reset_text_end = ABSOLUTE(.);
+  } >iram0_19_seg :iram0_19_phdr
+
+  .iram0.text : ALIGN(4)
+  {
+    _iram0_text_start = ABSOLUTE(.);
+    *(.iram0.literal .iram.literal .iram.text.literal .iram0.text .iram.text)
+    _iram0_text_end = ABSOLUTE(.);
+    _memmap_seg_iram0_19_end = ALIGN(0x8);
+  } >iram0_19_seg :iram0_19_phdr
+
+  .sram.shareaddr : ALIGN(4)
+  {
+    _sram_shareaddr_start = ABSOLUTE(.);
+    *(.sram.shareaddr)
+    _sram_shareaddr_end = ABSOLUTE(.);
+  } >sram0_seg :sram0_phdr
+
+  .sram.rodata : ALIGN(4)
+  {
+    _sram_rodata_start = ABSOLUTE(.);
+    *(.sram.rodata)
+    _sram_rodata_end = ABSOLUTE(.);
+  } >sram0_seg :sram0_phdr
+
+  .rodata : ALIGN(4)
+  {
+    _rodata_start = ABSOLUTE(.);
+    *(.rodata)
+    *(.rodata.*)
+    *(.gnu.linkonce.r.*)
+    *(.rodata1)
+    __XT_EXCEPTION_TABLE__ = ABSOLUTE(.);
+    KEEP (*(.xt_except_table))
+    KEEP (*(.gcc_except_table))
+    *(.gnu.linkonce.e.*)
+    *(.gnu.version_r)
+    KEEP (*(.eh_frame))
+    /*  C++ constructor and destructor tables, properly ordered:  */
+    KEEP (*crtbegin.o(.ctors))
+    KEEP (*(EXCLUDE_FILE (*crtend.o) .ctors))
+    KEEP (*(SORT(.ctors.*)))
+    KEEP (*(.ctors))
+    KEEP (*crtbegin.o(.dtors))
+    KEEP (*(EXCLUDE_FILE (*crtend.o) .dtors))
+    KEEP (*(SORT(.dtors.*)))
+    KEEP (*(.dtors))
+    /*  C++ exception handlers table:  */
+    __XT_EXCEPTION_DESCS__ = ABSOLUTE(.);
+    *(.xt_except_desc)
+    *(.gnu.linkonce.h.*)
+    __XT_EXCEPTION_DESCS_END__ = ABSOLUTE(.);
+    *(.xt_except_desc_end)
+    *(.dynamic)
+    *(.gnu.version_d)
+    . = ALIGN(4);		/* this table MUST be 4-byte aligned */
+    _bss_table_start = ABSOLUTE(.);
+    LONG(_vlpd_bss_start)
+    LONG(_vlpd_bss_end)
+    LONG(_efr_fr_hr_vlpd_bss_start)
+    LONG(_efr_fr_hr_vlpd_bss_end)
+    LONG(_amr_vlpd_bss_start)
+    LONG(_amr_vlpd_bss_end)
+    LONG(_amrwb_vlpd_bss_start)
+    LONG(_amrwb_vlpd_bss_end)
+    LONG(_ulpp_bss_start)
+    LONG(_ulpp_bss_end)
+    LONG(_dtsv3_bss_start)
+    LONG(_dtsv3_bss_end)
+    LONG(_dtsv4_bss_start)
+    LONG(_dtsv4_bss_end)
+    LONG(_dram0_bss_start)
+    LONG(_dram0_bss_end)
+    LONG(_bss_start)
+    LONG(_bss_end)
+    _bss_table_end = ABSOLUTE(.);
+    _rodata_end = ABSOLUTE(.);
+  } >sram0_seg :sram0_phdr
+
+  .sram.text : ALIGN(4)
+  {
+    _sram_text_start = ABSOLUTE(.);
+    *(.sram.literal .sram.text)
+    _sram_text_end = ABSOLUTE(.);
+  } >sram0_seg :sram0_phdr
+
+  .text : ALIGN(4)
+  {
+    _stext = .;
+    _text_start = ABSOLUTE(.);
+    *(.entry.text)
+    *(.init.literal)
+    KEEP(*(.init))
+    *(.literal .text .literal.* .text.* .stub .gnu.warning .gnu.linkonce.literal.* .gnu.linkonce.t.*.literal .gnu.linkonce.t.*)
+    *(.fini.literal)
+    KEEP(*(.fini))
+    *(.gnu.version)
+    _text_end = ABSOLUTE(.);
+    _etext = .;
+  } >sram0_seg :sram0_phdr
+
+  .sram.data : ALIGN(4)
+  {
+    _sram_data_start = ABSOLUTE(.);
+    *(.sram.data)
+    _sram_data_end = ABSOLUTE(.);
+  } >sram0_seg :sram0_phdr
+
+  .data : ALIGN(4)
+  {
+    _data_start = ABSOLUTE(.);
+    *(.data)
+    *(.data.*)
+    *(.gnu.linkonce.d.*)
+    KEEP(*(.gnu.linkonce.d.*personality*))
+    *(.data1)
+    *(.sdata)
+    *(.sdata.*)
+    *(.gnu.linkonce.s.*)
+    *(.sdata2)
+    *(.sdata2.*)
+    *(.gnu.linkonce.s2.*)
+    KEEP(*(.jcr))
+    _data_end = ABSOLUTE(.);
+  } >sram0_seg :sram0_phdr
+
+  .sram.uninit : ALIGN(4)
+  {
+    _sram_uninit_start = ABSOLUTE(.);
+    *(.sram.uninit)
+    _sram_uninit_end = ABSOLUTE(.);
+  } >sram0_seg :sram0_phdr
+
+  .bss (NOLOAD) : ALIGN(8)
+  {
+    . = ALIGN (8);
+    _bss_start = ABSOLUTE(.);
+    *(.dynsbss)
+    *(.sbss)
+    *(.sbss.*)
+    *(.gnu.linkonce.sb.*)
+    *(.scommon)
+    *(.sbss2)
+    *(.sbss2.*)
+    *(.gnu.linkonce.sb2.*)
+    *(.dynbss)
+    *(.bss)
+    *(.bss.*)
+    *(.gnu.linkonce.b.*)
+    *(COMMON)
+    *(.sram.pool.bss)
+    *(.sram.bss)
+    . = ALIGN (8);
+    _bss_end = ABSOLUTE(.);
+    _memmap_seg_sram0_end = ALIGN(0x8);
+  } >sram0_seg :sram0_bss_phdr
+  .debug  0 :  { *(.debug) }
+  .line  0 :  { *(.line) }
+  .debug_srcinfo  0 :  { *(.debug_srcinfo) }
+  .debug_sfnames  0 :  { *(.debug_sfnames) }
+  .debug_aranges  0 :  { *(.debug_aranges) }
+  .debug_pubnames  0 :  { *(.debug_pubnames) }
+  .debug_info  0 :  { *(.debug_info) }
+  .debug_abbrev  0 :  { *(.debug_abbrev) }
+  .debug_line  0 :  { *(.debug_line) }
+  .debug_frame  0 :  { *(.debug_frame) }
+  .debug_str  0 :  { *(.debug_str) }
+  .debug_loc  0 :  { *(.debug_loc) }
+  .debug_macinfo  0 :  { *(.debug_macinfo) }
+  .debug_weaknames  0 :  { *(.debug_weaknames) }
+  .debug_funcnames  0 :  { *(.debug_funcnames) }
+  .debug_typenames  0 :  { *(.debug_typenames) }
+  .debug_varnames  0 :  { *(.debug_varnames) }
+  .xt.insn 0 :
+  {
+    KEEP (*(.xt.insn))
+    KEEP (*(.gnu.linkonce.x.*))
+  }
+  .xt.prop 0 :
+  {
+    KEEP (*(.xt.prop))
+    KEEP (*(.xt.prop.*))
+    KEEP (*(.gnu.linkonce.prop.*))
+  }
+  .xt.lit 0 :
+  {
+    KEEP (*(.xt.lit))
+    KEEP (*(.xt.lit.*))
+    KEEP (*(.gnu.linkonce.p.*))
+  }
+  .debug.xt.callgraph 0 :
+  {
+    KEEP (*(.debug.xt.callgraph .debug.xt.callgraph.* .gnu.linkonce.xt.callgraph.*))
+  }
+}
+
diff --git a/hifi/xaf/hifi-dpf/build_hikey/hifi_hikey_lsp/ldscripts/elf32xtensa.xr b/hifi/xaf/hifi-dpf/build_hikey/hifi_hikey_lsp/ldscripts/elf32xtensa.xr
new file mode 100644
index 0000000..3e9f189
--- /dev/null
+++ b/hifi/xaf/hifi-dpf/build_hikey/hifi_hikey_lsp/ldscripts/elf32xtensa.xr
@@ -0,0 +1,42 @@
+/* This linker script generated from xt-genldscripts.tpp for LSP hifi_hikey_lsp */
+/* Linker Script for ld -r or ld -i */
+
+/*  Default entry point:  */
+ENTRY(_ResetVector)
+
+SECTIONS
+{
+
+  .text 0 :
+  {
+    *(.literal .text)
+  }
+
+  .bss 0 :
+  {
+    *(.dynsbss)
+    *(.sbss)
+    *(.scommon)
+    *(.dynbss)
+    *(.bss)
+    *(COMMON)
+  }
+  .debug  0 :  { *(.debug) }
+  .line  0 :  { *(.line) }
+  .debug_srcinfo  0 :  { *(.debug_srcinfo) }
+  .debug_sfnames  0 :  { *(.debug_sfnames) }
+  .debug_aranges  0 :  { *(.debug_aranges) }
+  .debug_pubnames  0 :  { *(.debug_pubnames) }
+  .debug_info  0 :  { *(.debug_info) }
+  .debug_abbrev  0 :  { *(.debug_abbrev) }
+  .debug_line  0 :  { *(.debug_line) }
+  .debug_frame  0 :  { *(.debug_frame) }
+  .debug_str  0 :  { *(.debug_str) }
+  .debug_loc  0 :  { *(.debug_loc) }
+  .debug_macinfo  0 :  { *(.debug_macinfo) }
+  .debug_weaknames  0 :  { *(.debug_weaknames) }
+  .debug_funcnames  0 :  { *(.debug_funcnames) }
+  .debug_typenames  0 :  { *(.debug_typenames) }
+  .debug_varnames  0 :  { *(.debug_varnames) }
+}
+
diff --git a/hifi/xaf/hifi-dpf/build_hikey/hifi_hikey_lsp/ldscripts/elf32xtensa.xu b/hifi/xaf/hifi-dpf/build_hikey/hifi_hikey_lsp/ldscripts/elf32xtensa.xu
new file mode 100644
index 0000000..d8e1986
--- /dev/null
+++ b/hifi/xaf/hifi-dpf/build_hikey/hifi_hikey_lsp/ldscripts/elf32xtensa.xu
@@ -0,0 +1,42 @@
+/* This linker script generated from xt-genldscripts.tpp for LSP hifi_hikey_lsp */
+/* Linker Script for ld -Ur */
+
+/*  Default entry point:  */
+ENTRY(_ResetVector)
+
+SECTIONS
+{
+
+  .text 0 :
+  {
+    *(.literal .text)
+  }
+
+  .bss 0 :
+  {
+    *(.dynsbss)
+    *(.sbss)
+    *(.scommon)
+    *(.dynbss)
+    *(.bss)
+    *(COMMON)
+  }
+  .debug  0 :  { *(.debug) }
+  .line  0 :  { *(.line) }
+  .debug_srcinfo  0 :  { *(.debug_srcinfo) }
+  .debug_sfnames  0 :  { *(.debug_sfnames) }
+  .debug_aranges  0 :  { *(.debug_aranges) }
+  .debug_pubnames  0 :  { *(.debug_pubnames) }
+  .debug_info  0 :  { *(.debug_info) }
+  .debug_abbrev  0 :  { *(.debug_abbrev) }
+  .debug_line  0 :  { *(.debug_line) }
+  .debug_frame  0 :  { *(.debug_frame) }
+  .debug_str  0 :  { *(.debug_str) }
+  .debug_loc  0 :  { *(.debug_loc) }
+  .debug_macinfo  0 :  { *(.debug_macinfo) }
+  .debug_weaknames  0 :  { *(.debug_weaknames) }
+  .debug_funcnames  0 :  { *(.debug_funcnames) }
+  .debug_typenames  0 :  { *(.debug_typenames) }
+  .debug_varnames  0 :  { *(.debug_varnames) }
+}
+
diff --git a/hifi/xaf/hifi-dpf/build_hikey/hifi_hikey_lsp/memmap.xmm b/hifi/xaf/hifi-dpf/build_hikey/hifi_hikey_lsp/memmap.xmm
new file mode 100644
index 0000000..c7a94bc
--- /dev/null
+++ b/hifi/xaf/hifi-dpf/build_hikey/hifi_hikey_lsp/memmap.xmm
@@ -0,0 +1,49 @@
+
+
+BEGIN iram0
+0xe8080000: instRam : iram0 : 0xc000 : executable, writable ;
+ iram0_0 : F : 0xe8080000 - 0xe80802ff : .ResetVector.text;
+ iram0_1 : C : 0xe8080300 - 0xe80803ff : .Reset.literal;
+ iram0_2 : F : 0xe8080400 - 0xe8080577 : .WindowVectors.text;
+ iram0_3 : C : 0xe8080578 - 0xe808057f : .Level2InterruptVector.literal;
+ iram0_4 : F : 0xe8080580 - 0xe80805b7 : .Level2InterruptVector.text;
+ iram0_5 : C : 0xe80805b8 - 0xe80805bf : .Level3InterruptVector.literal;
+ iram0_6 : F : 0xe80805c0 - 0xe80805f7 : .Level3InterruptVector.text;
+ iram0_7 : C : 0xe80805f8 - 0xe80805ff : .Level4InterruptVector.literal;
+ iram0_8 : F : 0xe8080600 - 0xe8080637 : .Level4InterruptVector.text;
+ iram0_9 : C : 0xe8080638 - 0xe808063f : .DebugExceptionVector.literal;
+ iram0_10 : F : 0xe8080640 - 0xe8080677 : .DebugExceptionVector.text;
+ iram0_11 : C : 0xe8080678 - 0xe80806bf : .NMIExceptionVector.literal;
+ iram0_12 : F : 0xe80806c0 - 0xe80806f7 : .NMIExceptionVector.text;
+ iram0_13 : C : 0xe80806f8 - 0xe80806ff : .KernelExceptionVector.literal;
+ iram0_14 : F : 0xe8080700 - 0xe8080737 : .KernelExceptionVector.text;
+ iram0_15 : C : 0xe8080738 - 0xe808073f : .UserExceptionVector.literal;
+ iram0_16 : F : 0xe8080740 - 0xe8080777 : .UserExceptionVector.text;
+ iram0_17 : C : 0xe8080778 - 0xe80807bf : .DoubleExceptionVector.literal;
+ iram0_18 : F : 0xe80807c0 - 0xe80807ff : .DoubleExceptionVector.text;
+ iram0_19 : C : 0xe8080800 - 0xe808bfff : .iram0.literal .Reset.text .iram0.text;
+END iram0
+
+BEGIN dram0
+0xe8058000: dataRam : dram0 : 0x28000 : writable ;
+ dram0_0 : C : 0xe8058000 - 0xe807ffff :  STACK :  HEAP : .dram0.rodata .dram0.literal .dram0.data .dram0.bss .om.debug.bss .os.stack.bss;
+END dram0
+
+BEGIN sram
+0xc0000000: sysram : sram : 0x600000 : executable, writable ;
+ sram0 : C : 0xc0000000 - 0xC0407FFF : .sram.shareaddr .sram.rodata .rodata .sram.literal .literal .sram.text .text .sram.data .data .sram.uninit .sram.pool.bss .sram.bss .bss;
+ old_vlpd : C : 0xC0408000 - 0xC0417FFF : .vlpd.rodata .vlpd.data .vlpd.bss;
+ efr_fr_hr_vlpd : C : 0xC0418000 - 0xC0427FFF : .efr_fr_hr_vlpd.rodata .efr_fr_hr_vlpd.data .efr_fr_hr_vlpd.bss;
+ amr_vlpd : C : 0xC0428000 - 0xC0437FFF : .amr_vlpd.rodata .amr_vlpd.data .amr_vlpd.bss;
+ amrwb_vlpd : C : 0xC0438000 - 0xC0447FFF : .amrwb_vlpd.rodata .amrwb_vlpd.data .amrwb_vlpd.bss;
+ evrc_evrcb_vlpt : C : 0xC0448000 - 0xC048FFFF : .evrc_evrcb_vlpt.literal .evrc_evrcb_vlpt.text;
+ efr_fr_hr_vlpt : C : 0xC0490000 - 0xC04BFFFF : .efr_fr_hr_vlpt.literal .efr_fr_hr_vlpt.text;
+ amr_vlpt : C : 0xC04C0000 - 0xC04DFFFF : .amr_vlpt.literal .amr_vlpt.text;
+ amrwb_vlpt : C : 0xC04E0000 -0xC050FFFF : .amrwb_vlpt.literal .amrwb_vlpt.text;
+ vlpt : C : 0xC0510000 - 0xC0557FFF : .vlpt.literal .vlpt.text;
+ vlpd : C : 0xC0558000 - 0xC0577FFF : .low_power_dyn_alloc;
+ ulpp : C : 0xc0578000 - 0xc05b7fff : .ulpp.rodata .ulpp.data .ulpp.literal .ulpp.text .ulpp.bss;
+ dtsv3 : C : 0xc05b8000 - 0xc05d7fff : .dtsv3.rodata .dtsv3.data .dtsv3.literal .dtsv3.text .dtsv3.bss;
+ dtsv4 : C : 0xc05d8000 - 0xc05fffff : .dtsv4.rodata .dtsv4.data .dtsv4.literal .dtsv4.text .dtsv4.bss;
+END sram
+
diff --git a/hifi/xaf/hifi-dpf/build_hikey/hifi_hikey_lsp/min-rt.parm b/hifi/xaf/hifi-dpf/build_hikey/hifi_hikey_lsp/min-rt.parm
new file mode 100644
index 0000000..25083ee
--- /dev/null
+++ b/hifi/xaf/hifi-dpf/build_hikey/hifi_hikey_lsp/min-rt.parm
@@ -0,0 +1,15 @@
+//  Memory map file to generate linker scripts for programs without board I/O.
+
+// $Id: //depot/rel/Cottonwood/Xtensa/SWConfig/ldscripts/min-rt.parm#1 $
+
+// Customer ID=9470; Build=0x42f97; Copyright (c) 2004-2007 by Tensilica Inc.  ALL RIGHTS RESERVED.
+// These coded instructions, statements, and computer programs are the
+// copyrighted works and confidential proprietary information of Tensilica Inc.
+// They may not be modified, copied, reproduced, distributed, or disclosed to
+// third parties in any manner, medium, or form, in whole or in part, without
+// the prior written consent of Tensilica Inc.
+
+//  Show more details if configuration targets the XT2000 board:
+INCLUDE_XT2000_MEMORIES = try
+RESERVE_SEGMENT_AREA = ".i_ocram.text 0x7800 + 0 start : .d_ocram.data 0x5000 + 0 start"
+
diff --git a/hifi/xaf/hifi-dpf/build_hikey/hifi_hikey_lsp/specs b/hifi/xaf/hifi-dpf/build_hikey/hifi_hikey_lsp/specs
new file mode 100644
index 0000000..2988e02
--- /dev/null
+++ b/hifi/xaf/hifi-dpf/build_hikey/hifi_hikey_lsp/specs
@@ -0,0 +1,22 @@
+# Customer ID=9470; Build=0x42f97; Copyright (c) 2001-2010 by Tensilica Inc.  ALL RIGHTS RESERVED.
+# These coded instructions, statements, and computer programs are the
+# copyrighted works and confidential proprietary information of Tensilica Inc.
+# They may not be modified, copied, reproduced, distributed, or disclosed to
+# third parties in any manner, medium, or form, in whole or in part, without
+# the prior written consent of Tensilica Inc.
+
+
+# The %O suffix on the start and end files indicates that the system's
+# standard suffix for object files (e.g., ".o") should be appended.
+# The %s suffix tells the compiler driver to search for the file in the
+# list of known locations for startfiles.
+
+*startfile:
+crt1-boards%O%s crti%O%s crtbegin%O%s _sharedvectors%O%s _vectors%O%s
+
+*endfile:
+crtend%O%s crtn%O%s
+
+*lib:
+-lc -lgloss -lminrt -lc -lhandler-reset -lhandlers-board -lminrt -lhal -lc
+
diff --git a/hifi/xaf/hifi-dpf/build_hikey/hifi_hikey_lsp/tag b/hifi/xaf/hifi-dpf/build_hikey/hifi_hikey_lsp/tag
new file mode 100644
index 0000000..7be80f2
--- /dev/null
+++ b/hifi/xaf/hifi-dpf/build_hikey/hifi_hikey_lsp/tag
@@ -0,0 +1,3 @@
+#This file is generated by Xplorer, do not edit.
+#Mon Aug 26 15:41:31 CST 2013
+standardlsp=min-rt
diff --git a/hifi/xaf/hifi-dpf/build_hikey/hifi_hikey_lsp/user.parm b/hifi/xaf/hifi-dpf/build_hikey/hifi_hikey_lsp/user.parm
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/hifi/xaf/hifi-dpf/build_hikey/hifi_hikey_lsp/user.parm
diff --git a/hifi/xaf/hifi-dpf/build_hikey/map_hikey.txt b/hifi/xaf/hifi-dpf/build_hikey/map_hikey.txt
new file mode 100644
index 0000000..58a3efc
--- /dev/null
+++ b/hifi/xaf/hifi-dpf/build_hikey/map_hikey.txt
@@ -0,0 +1,2167 @@
+Archive member included because of file (symbol)
+
+../plugins/cadence/vorbis_dec/lib/hifi3/xa_vorbis_dec.a(xa_vorbis_dec.o)
+                              objs/hikey/xa-vorbis-decoder.o (xa_vorbis_dec)
+/scratch/speacial_projects/sof-sdk/xtensa_tools/tools/XtDevTools/install/builds/RG-2017.5-linux/hifi3_hikey960/xtensa-elf/arch/lib//libhal.a(windowspill_asm.o)
+                              objs/hikey/arch_hifi330.o (xthal_window_spill_nw)
+/scratch/speacial_projects/sof-sdk/xtensa_tools/tools/XtDevTools/install/builds/RG-2017.5-linux/hifi3_hikey960/xtensa-elf/arch/lib//libhal.a(cache_asm--dcache_region_invalidate.o)
+                              objs/hikey/xf-shmem.o (xthal_dcache_region_invalidate)
+/scratch/speacial_projects/sof-sdk/xtensa_tools/tools/XtDevTools/install/builds/RG-2017.5-linux/hifi3_hikey960/xtensa-elf/arch/lib//libhal.a(cache_asm--dcache_region_writeback.o)
+                              objs/hikey/xf-shmem.o (xthal_dcache_region_writeback)
+/scratch/speacial_projects/sof-sdk/xtensa_tools/tools/XtDevTools/install/builds/RG-2017.5-linux/hifi3_hikey960/xtensa-elf/arch/lib//libhal.a(cache_asm--hw_configid0.o)
+                              /scratch/speacial_projects/sof-sdk/xtensa_tools/tools/XtDevTools/install/builds/RG-2017.5-linux/hifi3_hikey960/xtensa-elf/arch/lib//libhal.a(cache_asm--dcache_region_invalidate.o) (xthals_hw_configid0)
+/scratch/speacial_projects/sof-sdk/xtensa_tools/tools/XtDevTools/install/builds/RG-2017.5-linux/hifi3_hikey960/xtensa-elf/arch/lib//libhal.a(cache_asm--hw_configid1.o)
+                              /scratch/speacial_projects/sof-sdk/xtensa_tools/tools/XtDevTools/install/builds/RG-2017.5-linux/hifi3_hikey960/xtensa-elf/arch/lib//libhal.a(cache_asm--dcache_region_invalidate.o) (xthals_hw_configid1)
+/scratch/speacial_projects/sof-sdk/xtensa_tools/tools/XtDevTools/install/builds/RG-2017.5-linux/hifi3_hikey960/xtensa-elf/arch/lib//libhal.a(cache_asm--release_major.o)
+                              /scratch/speacial_projects/sof-sdk/xtensa_tools/tools/XtDevTools/install/builds/RG-2017.5-linux/hifi3_hikey960/xtensa-elf/arch/lib//libhal.a(cache_asm--dcache_region_invalidate.o) (xthals_release_major)
+/scratch/speacial_projects/sof-sdk/xtensa_tools/tools/XtDevTools/install/builds/RG-2017.5-linux/hifi3_hikey960/xtensa-elf/arch/lib//libhal.a(cache_asm--release_minor.o)
+                              /scratch/speacial_projects/sof-sdk/xtensa_tools/tools/XtDevTools/install/builds/RG-2017.5-linux/hifi3_hikey960/xtensa-elf/arch/lib//libhal.a(cache_asm--dcache_region_invalidate.o) (xthals_release_minor)
+/scratch/speacial_projects/sof-sdk/xtensa_tools/tools/XtDevTools/install/builds/RG-2017.5-linux/hifi3_hikey960/xtensa-elf/arch/lib//libhal.a(int_asm--get_intenable.o)
+                              objs/hikey/cpu_c.o (xthal_get_intenable)
+/scratch/speacial_projects/sof-sdk/xtensa_tools/tools/XtDevTools/install/builds/RG-2017.5-linux/hifi3_hikey960/xtensa-elf/arch/lib//libhal.a(int_asm--set_intenable.o)
+                              objs/hikey/cpu_c.o (xthal_set_intenable)
+/scratch/speacial_projects/sof-sdk/xtensa_tools/tools/XtDevTools/install/builds/RG-2017.5-linux/hifi3_hikey960/xtensa-elf/arch/lib//libhal.a(state_asm--restore_extra_nw.o)
+                              objs/hikey/arch_hifi330.o (xthal_restore_extra_nw)
+/scratch/speacial_projects/sof-sdk/xtensa_tools/tools/XtDevTools/install/builds/RG-2017.5-linux/hifi3_hikey960/xtensa-elf/arch/lib//libhal.a(state_asm--save_extra_nw.o)
+                              objs/hikey/arch_hifi330.o (xthal_save_extra_nw)
+/scratch/speacial_projects/sof-sdk/xtensa_tools/tools/XtDevTools/install/builds/RG-2017.5-linux/hifi3_hikey960/xtensa-elf/arch/lib//libhandlers-board.a(ints-on.o)
+                              objs/hikey/xf-main.o (_xtos_ints_on)
+/scratch/speacial_projects/sof-sdk/xtensa_tools/tools/XtDevTools/install/builds/RG-2017.5-linux/hifi3_hikey960/xtensa-elf/arch/lib//libhandlers-board.a(ints-off.o)
+                              objs/hikey/mutex.o (_xtos_ints_off)
+/scratch/speacial_projects/sof-sdk/xtensa_tools/tools/XtDevTools/install/builds/RG-2017.5-linux/hifi3_hikey960/xtensa-elf/arch/lib//libhandlers-board.a(interrupt-table.o)
+                              /scratch/speacial_projects/sof-sdk/xtensa_tools/tools/XtDevTools/install/builds/RG-2017.5-linux/hifi3_hikey960/xtensa-elf/arch/lib//libhandlers-board.a(ints-on.o) (_xtos_intstruct)
+/scratch/speacial_projects/sof-sdk/xtensa_tools/tools/XtDevTools/install/builds/RG-2017.5-linux/hifi3_hikey960/xtensa-elf/lib//libc.a(lib_a-memchr.o)
+                              ../plugins/cadence/vorbis_dec/lib/hifi3/xa_vorbis_dec.a(xa_vorbis_dec.o) (memchr)
+/scratch/speacial_projects/sof-sdk/xtensa_tools/tools/XtDevTools/install/builds/RG-2017.5-linux/hifi3_hikey960/xtensa-elf/lib//libc.a(lib_a-memcmp.o)
+                              ../plugins/cadence/vorbis_dec/lib/hifi3/xa_vorbis_dec.a(xa_vorbis_dec.o) (memcmp)
+/scratch/speacial_projects/sof-sdk/xtensa_tools/tools/XtDevTools/install/builds/RG-2017.5-linux/hifi3_hikey960/xtensa-elf/lib//libc.a(lib_a-memcpy.o)
+                              objs/hikey/xf-io.o (memcpy)
+/scratch/speacial_projects/sof-sdk/xtensa_tools/tools/XtDevTools/install/builds/RG-2017.5-linux/hifi3_hikey960/xtensa-elf/lib//libc.a(lib_a-memset.o)
+                              objs/hikey/xf-io.o (memset)
+/scratch/speacial_projects/sof-sdk/xtensa_tools/tools/XtDevTools/install/builds/RG-2017.5-linux/hifi3_hikey960/xtensa-elf/lib//libc.a(lib_a-qsort.o)
+                              ../plugins/cadence/vorbis_dec/lib/hifi3/xa_vorbis_dec.a(xa_vorbis_dec.o) (qsort)
+/scratch/speacial_projects/sof-sdk/xtensa_tools/tools/XtDevTools/install/builds/RG-2017.5-linux/hifi3_hikey960/xtensa-elf/lib//libc.a(lib_a-strncmp.o)
+                              objs/hikey/xa-factory.o (strncmp)
+/scratch/speacial_projects/sof-sdk/xtensa_tools/tools/XtDevTools/install/builds/RG-2017.5-linux/hifi3_hikey960/xtensa-elf/lib/xcc//libgcc.a(_divsi3.o)
+                              ../plugins/cadence/vorbis_dec/lib/hifi3/xa_vorbis_dec.a(xa_vorbis_dec.o) (__divsi3)
+/scratch/speacial_projects/sof-sdk/xtensa_tools/tools/XtDevTools/install/builds/RG-2017.5-linux/hifi3_hikey960/xtensa-elf/lib/xcc//libgcc.a(_modsi3.o)
+                              ../plugins/cadence/vorbis_dec/lib/hifi3/xa_vorbis_dec.a(xa_vorbis_dec.o) (__modsi3)
+/scratch/speacial_projects/sof-sdk/xtensa_tools/tools/XtDevTools/install/builds/RG-2017.5-linux/hifi3_hikey960/xtensa-elf/lib/xcc//libgcc.a(_addsubdf3.o)
+                              objs/hikey/xf-core.o (__adddf3)
+/scratch/speacial_projects/sof-sdk/xtensa_tools/tools/XtDevTools/install/builds/RG-2017.5-linux/hifi3_hikey960/xtensa-elf/lib/xcc//libgcc.a(_muldf3.o)
+                              objs/hikey/dsp_debug.o (__muldf3)
+/scratch/speacial_projects/sof-sdk/xtensa_tools/tools/XtDevTools/install/builds/RG-2017.5-linux/hifi3_hikey960/xtensa-elf/lib/xcc//libgcc.a(_cmpdf2.o)
+                              objs/hikey/dsp_debug.o (__ltdf2)
+/scratch/speacial_projects/sof-sdk/xtensa_tools/tools/XtDevTools/install/builds/RG-2017.5-linux/hifi3_hikey960/xtensa-elf/lib/xcc//libgcc.a(_fixunsdfsi.o)
+                              objs/hikey/xf-core.o (__fixunsdfsi)
+/scratch/speacial_projects/sof-sdk/xtensa_tools/tools/XtDevTools/install/builds/RG-2017.5-linux/hifi3_hikey960/xtensa-elf/lib/xcc//libgcc.a(_fixunsdfdi.o)
+                              objs/hikey/dsp_debug.o (__fixunsdfdi)
+/scratch/speacial_projects/sof-sdk/xtensa_tools/tools/XtDevTools/install/builds/RG-2017.5-linux/hifi3_hikey960/xtensa-elf/lib/xcc//libgcc.a(_floatsidf.o)
+                              objs/hikey/xf-core.o (__floatunsidf)
+/scratch/speacial_projects/sof-sdk/xtensa_tools/tools/XtDevTools/install/builds/RG-2017.5-linux/hifi3_hikey960/xtensa-elf/lib/xcc//libgcc.a(_floatdidf.o)
+                              objs/hikey/dsp_debug.o (__floatundidf)
+/scratch/speacial_projects/sof-sdk/xtensa_tools/tools/XtDevTools/install/builds/RG-2017.5-linux/hifi3_hikey960/xtensa-elf/lib/xcc//libgcc.a(_divdi3.o)
+                              ../plugins/cadence/vorbis_dec/lib/hifi3/xa_vorbis_dec.a(xa_vorbis_dec.o) (__divdi3)
+/scratch/speacial_projects/sof-sdk/xtensa_tools/tools/XtDevTools/install/builds/RG-2017.5-linux/hifi3_hikey960/xtensa-elf/lib/xcc//libgcc.a(_udivdi3.o)
+                              objs/hikey/dsp_debug.o (__udivdi3)
+/scratch/speacial_projects/sof-sdk/xtensa_tools/tools/XtDevTools/install/builds/RG-2017.5-linux/hifi3_hikey960/xtensa-elf/lib/xcc//libgcc.a(_umoddi3.o)
+                              objs/hikey/dsp_debug.o (__umoddi3)
+/scratch/speacial_projects/sof-sdk/xtensa_tools/tools/XtDevTools/install/builds/RG-2017.5-linux/hifi3_hikey960/xtensa-elf/lib/xcc//libgcc.a(vec_memcpy.o)
+                              ../plugins/cadence/vorbis_dec/lib/hifi3/xa_vorbis_dec.a(xa_vorbis_dec.o) (__vec_memcpy)
+/scratch/speacial_projects/sof-sdk/xtensa_tools/tools/XtDevTools/install/builds/RG-2017.5-linux/hifi3_hikey960/xtensa-elf/lib/xcc//libgcc.a(vec_memset.o)
+                              ../plugins/cadence/vorbis_dec/lib/hifi3/xa_vorbis_dec.a(xa_vorbis_dec.o) (__vec_memset)
+/scratch/speacial_projects/sof-sdk/xtensa_tools/tools/XtDevTools/install/builds/RG-2017.5-linux/hifi3_hikey960/xtensa-elf/lib/xcc//libgcc.a(softfloat_div_df.o)
+                              objs/hikey/xf-core.o (__divdf3)
+/scratch/speacial_projects/sof-sdk/xtensa_tools/tools/XtDevTools/install/builds/RG-2017.5-linux/hifi3_hikey960/xtensa-elf/lib/xcc//libgcc.a(softfloat_cmn_df.o)
+                              /scratch/speacial_projects/sof-sdk/xtensa_tools/tools/XtDevTools/install/builds/RG-2017.5-linux/hifi3_hikey960/xtensa-elf/lib/xcc//libgcc.a(softfloat_div_df.o) (__propagateFloat64NaN)
+/scratch/speacial_projects/sof-sdk/xtensa_tools/tools/XtDevTools/install/builds/RG-2017.5-linux/hifi3_hikey960/xtensa-elf/lib/xcc//libgcc.a(softfloat_cmn_div.o)
+                              /scratch/speacial_projects/sof-sdk/xtensa_tools/tools/XtDevTools/install/builds/RG-2017.5-linux/hifi3_hikey960/xtensa-elf/lib/xcc//libgcc.a(softfloat_div_df.o) (__estimateDiv64To32)
+
+Memory Configuration
+
+Name             Origin             Length             Attributes
+sram0_seg        0xc0000000         0x00408000
+old_vlpd_seg     0xc0408000         0x00010000
+efr_fr_hr_vlpd_seg 0xc0418000         0x00010000
+amr_vlpd_seg     0xc0428000         0x00010000
+amrwb_vlpd_seg   0xc0438000         0x00010000
+evrc_evrcb_vlpt_seg 0xc0448000         0x00048000
+efr_fr_hr_vlpt_seg 0xc0490000         0x00030000
+amr_vlpt_seg     0xc04c0000         0x00020000
+amrwb_vlpt_seg   0xc04e0000         0x00030000
+vlpt_seg         0xc0510000         0x00048000
+vlpd_seg         0xc0558000         0x00020000
+ulpp_seg         0xc0578000         0x00040000
+dtsv3_seg        0xc05b8000         0x00020000
+dtsv4_seg        0xc05d8000         0x00028000
+dram0_0_seg      0xe8058000         0x00028000
+iram0_0_seg      0xe8080000         0x00000300
+iram0_1_seg      0xe8080300         0x00000100
+iram0_2_seg      0xe8080400         0x00000178
+iram0_3_seg      0xe8080578         0x00000008
+iram0_4_seg      0xe8080580         0x00000038
+iram0_5_seg      0xe80805b8         0x00000008
+iram0_6_seg      0xe80805c0         0x00000038
+iram0_7_seg      0xe80805f8         0x00000008
+iram0_8_seg      0xe8080600         0x00000038
+iram0_9_seg      0xe8080638         0x00000008
+iram0_10_seg     0xe8080640         0x00000038
+iram0_11_seg     0xe8080678         0x00000048
+iram0_12_seg     0xe80806c0         0x00000038
+iram0_13_seg     0xe80806f8         0x00000008
+iram0_14_seg     0xe8080700         0x00000038
+iram0_15_seg     0xe8080738         0x00000008
+iram0_16_seg     0xe8080740         0x00000038
+iram0_17_seg     0xe8080778         0x00000048
+iram0_18_seg     0xe80807c0         0x00000040
+iram0_19_seg     0xe8080800         0x0000b800
+*default*        0x00000000         0xffffffff
+
+Linker script and memory map
+
+LOAD objs/hikey/cpu_c.o
+LOAD objs/hikey/dsp_debug.o
+LOAD objs/hikey/dsp_comm.o
+LOAD objs/hikey/mutex.o
+LOAD objs/hikey/rbtree.o
+LOAD objs/hikey/xf-core.o
+LOAD objs/hikey/xf-io.o
+LOAD objs/hikey/xf-mem.o
+LOAD objs/hikey/xf-msg.o
+LOAD objs/hikey/xf-sched.o
+LOAD objs/hikey/xa-factory.o
+LOAD objs/hikey/xf-shmem.o
+LOAD objs/hikey/tinyvprintf.o
+LOAD objs/hikey/xf-isr.o
+LOAD objs/hikey/gdbstub.o
+LOAD objs/hikey/xa-class-base.o
+LOAD objs/hikey/xa-class-audio-codec.o
+LOAD objs/hikey/xa-class-mixer.o
+LOAD objs/hikey/xf-main.o
+LOAD objs/hikey/xa-pcm.o
+LOAD objs/hikey/xa-vorbis-decoder.o
+LOAD objs/hikey/xa-mixer.o
+LOAD objs/hikey/reset.o
+LOAD objs/hikey/int_vector.o
+LOAD objs/hikey/arch_hifi330.o
+LOAD objs/hikey/gdbstub-entry.o
+LOAD ../plugins/cadence/vorbis_dec/lib/hifi3/xa_vorbis_dec.a
+LOAD /scratch/speacial_projects/sof-sdk/xtensa_tools/tools/XtDevTools/install/builds/RG-2017.5-linux/hifi3_hikey960/xtensa-elf/arch/lib//libhal.a
+LOAD /scratch/speacial_projects/sof-sdk/xtensa_tools/tools/XtDevTools/install/builds/RG-2017.5-linux/hifi3_hikey960/xtensa-elf/arch/lib//libhandlers-board.a
+LOAD /scratch/speacial_projects/sof-sdk/xtensa_tools/tools/XtDevTools/install/builds/RG-2017.5-linux/hifi3_hikey960/xtensa-elf/lib//libc.a
+LOAD /scratch/speacial_projects/sof-sdk/xtensa_tools/tools/XtDevTools/install/builds/RG-2017.5-linux/hifi3_hikey960/xtensa-elf/lib/xcc//libgcc.a
+                0xe8080000                _memmap_mem_iram0_start = 0xe8080000
+                0xe808c000                _memmap_mem_iram0_end = 0xe808c000
+                0xe8058000                _memmap_mem_dram0_start = 0xe8058000
+                0xe8080000                _memmap_mem_dram0_end = 0xe8080000
+                0xc0000000                _memmap_mem_sram_start = 0xc0000000
+                0xc0600000                _memmap_mem_sram_end = 0xc0600000
+                0xc0000000                _memmap_seg_sram0_start = 0xc0000000
+                0xc0408000                _memmap_seg_sram0_max = 0xc0408000
+                0xc0408000                _memmap_seg_old_vlpd_start = 0xc0408000
+                0xc0418000                _memmap_seg_old_vlpd_max = 0xc0418000
+                0xc0418000                _memmap_seg_efr_fr_hr_vlpd_start = 0xc0418000
+                0xc0428000                _memmap_seg_efr_fr_hr_vlpd_max = 0xc0428000
+                0xc0428000                _memmap_seg_amr_vlpd_start = 0xc0428000
+                0xc0438000                _memmap_seg_amr_vlpd_max = 0xc0438000
+                0xc0438000                _memmap_seg_amrwb_vlpd_start = 0xc0438000
+                0xc0448000                _memmap_seg_amrwb_vlpd_max = 0xc0448000
+                0xc0448000                _memmap_seg_evrc_evrcb_vlpt_start = 0xc0448000
+                0xc0490000                _memmap_seg_evrc_evrcb_vlpt_max = 0xc0490000
+                0xc0490000                _memmap_seg_efr_fr_hr_vlpt_start = 0xc0490000
+                0xc04c0000                _memmap_seg_efr_fr_hr_vlpt_max = 0xc04c0000
+                0xc04c0000                _memmap_seg_amr_vlpt_start = 0xc04c0000
+                0xc04e0000                _memmap_seg_amr_vlpt_max = 0xc04e0000
+                0xc04e0000                _memmap_seg_amrwb_vlpt_start = 0xc04e0000
+                0xc0510000                _memmap_seg_amrwb_vlpt_max = 0xc0510000
+                0xc0510000                _memmap_seg_vlpt_start = 0xc0510000
+                0xc0558000                _memmap_seg_vlpt_max = 0xc0558000
+                0xc0558000                _memmap_seg_vlpd_start = 0xc0558000
+                0xc0578000                _memmap_seg_vlpd_max = 0xc0578000
+                0xc0578000                _memmap_seg_ulpp_start = 0xc0578000
+                0xc05b8000                _memmap_seg_ulpp_max = 0xc05b8000
+                0xc05b8000                _memmap_seg_dtsv3_start = 0xc05b8000
+                0xc05d8000                _memmap_seg_dtsv3_max = 0xc05d8000
+                0xc05d8000                _memmap_seg_dtsv4_start = 0xc05d8000
+                0xc0600000                _memmap_seg_dtsv4_max = 0xc0600000
+                0xe8058000                _memmap_seg_dram0_0_start = 0xe8058000
+                0xe8080000                _memmap_seg_dram0_0_max = 0xe8080000
+                0xe8080000                _memmap_seg_iram0_0_start = 0xe8080000
+                0xe8080300                _memmap_seg_iram0_0_max = 0xe8080300
+                0xe8080300                _memmap_seg_iram0_1_start = 0xe8080300
+                0xe8080400                _memmap_seg_iram0_1_max = 0xe8080400
+                0xe8080400                _memmap_seg_iram0_2_start = 0xe8080400
+                0xe8080578                _memmap_seg_iram0_2_max = 0xe8080578
+                0xe8080578                _memmap_seg_iram0_3_start = 0xe8080578
+                0xe8080580                _memmap_seg_iram0_3_max = 0xe8080580
+                0xe8080580                _memmap_seg_iram0_4_start = 0xe8080580
+                0xe80805b8                _memmap_seg_iram0_4_max = 0xe80805b8
+                0xe80805b8                _memmap_seg_iram0_5_start = 0xe80805b8
+                0xe80805c0                _memmap_seg_iram0_5_max = 0xe80805c0
+                0xe80805c0                _memmap_seg_iram0_6_start = 0xe80805c0
+                0xe80805f8                _memmap_seg_iram0_6_max = 0xe80805f8
+                0xe80805f8                _memmap_seg_iram0_7_start = 0xe80805f8
+                0xe8080600                _memmap_seg_iram0_7_max = 0xe8080600
+                0xe8080600                _memmap_seg_iram0_8_start = 0xe8080600
+                0xe8080638                _memmap_seg_iram0_8_max = 0xe8080638
+                0xe8080638                _memmap_seg_iram0_9_start = 0xe8080638
+                0xe8080640                _memmap_seg_iram0_9_max = 0xe8080640
+                0xe8080640                _memmap_seg_iram0_10_start = 0xe8080640
+                0xe8080678                _memmap_seg_iram0_10_max = 0xe8080678
+                0xe8080678                _memmap_seg_iram0_11_start = 0xe8080678
+                0xe80806c0                _memmap_seg_iram0_11_max = 0xe80806c0
+                0xe80806c0                _memmap_seg_iram0_12_start = 0xe80806c0
+                0xe80806f8                _memmap_seg_iram0_12_max = 0xe80806f8
+                0xe80806f8                _memmap_seg_iram0_13_start = 0xe80806f8
+                0xe8080700                _memmap_seg_iram0_13_max = 0xe8080700
+                0xe8080700                _memmap_seg_iram0_14_start = 0xe8080700
+                0xe8080738                _memmap_seg_iram0_14_max = 0xe8080738
+                0xe8080738                _memmap_seg_iram0_15_start = 0xe8080738
+                0xe8080740                _memmap_seg_iram0_15_max = 0xe8080740
+                0xe8080740                _memmap_seg_iram0_16_start = 0xe8080740
+                0xe8080778                _memmap_seg_iram0_16_max = 0xe8080778
+                0xe8080778                _memmap_seg_iram0_17_start = 0xe8080778
+                0xe80807c0                _memmap_seg_iram0_17_max = 0xe80807c0
+                0xe80807c0                _memmap_seg_iram0_18_start = 0xe80807c0
+                0xe8080800                _memmap_seg_iram0_18_max = 0xe8080800
+                0xe8080800                _memmap_seg_iram0_19_start = 0xe8080800
+                0xe808c000                _memmap_seg_iram0_19_max = 0xe808c000
+                0x00000000                _rom_store_table = 0x0
+                0xe8080400                PROVIDE (_memmap_vecbase_reset, 0xe8080400)
+                0xe8080000                PROVIDE (_memmap_reset_vector, 0xe8080000)
+                0x44000000                _memmap_cacheattr_wb_base = 0x44000000
+                0x11000000                _memmap_cacheattr_wt_base = 0x11000000
+                0x22000000                _memmap_cacheattr_bp_base = 0x22000000
+                0x00ffffff                _memmap_cacheattr_unused_mask = 0xffffff
+                0x4422222f                _memmap_cacheattr_wb_trapnull = 0x4422222f
+                0x4422222f                _memmap_cacheattr_wba_trapnull = 0x4422222f
+                0x5522222f                _memmap_cacheattr_wbna_trapnull = 0x5522222f
+                0x1122222f                _memmap_cacheattr_wt_trapnull = 0x1122222f
+                0x2222222f                _memmap_cacheattr_bp_trapnull = 0x2222222f
+                0x44ffffff                _memmap_cacheattr_wb_strict = 0x44ffffff
+                0x11ffffff                _memmap_cacheattr_wt_strict = 0x11ffffff
+                0x22ffffff                _memmap_cacheattr_bp_strict = 0x22ffffff
+                0x44222222                _memmap_cacheattr_wb_allvalid = 0x44222222
+                0x11222222                _memmap_cacheattr_wt_allvalid = 0x11222222
+                0x22222222                _memmap_cacheattr_bp_allvalid = 0x22222222
+                0x4422222f                PROVIDE (_memmap_cacheattr_reset, _memmap_cacheattr_wb_trapnull)
+
+.vlpd.rodata    0xc0408000        0x0
+                0xc0408000                _vlpd_rodata_start = ABSOLUTE (.)
+ *(.vlpd.rodata)
+                0xc0408000                _vlpd_rodata_end = ABSOLUTE (.)
+
+.vlpd.data      0xc0408000        0x0
+                0xc0408000                _vlpd_data_start = ABSOLUTE (.)
+ *(.vlpd.data)
+                0xc0408000                _vlpd_data_end = ABSOLUTE (.)
+
+.vlpd.bss       0xc0408000        0x0
+                0xc0408000                . = ALIGN (0x8)
+                0xc0408000                _vlpd_bss_start = ABSOLUTE (.)
+ *(.vlpd.bss)
+                0xc0408000                . = ALIGN (0x8)
+                0xc0408000                _vlpd_bss_end = ABSOLUTE (.)
+                0xc0408000                _memmap_seg_old_vlpd_end = ALIGN (0x8)
+
+.efr_fr_hr_vlpd.rodata
+                0xc0418000        0x0
+                0xc0418000                _efr_fr_hr_vlpd_rodata_start = ABSOLUTE (.)
+ *(.efr_fr_hr_vlpd.rodata)
+                0xc0418000                _efr_fr_hr_vlpd_rodata_end = ABSOLUTE (.)
+
+.efr_fr_hr_vlpd.data
+                0xc0418000        0x0
+                0xc0418000                _efr_fr_hr_vlpd_data_start = ABSOLUTE (.)
+ *(.efr_fr_hr_vlpd.data)
+                0xc0418000                _efr_fr_hr_vlpd_data_end = ABSOLUTE (.)
+
+.efr_fr_hr_vlpd.bss
+                0xc0418000        0x0
+                0xc0418000                . = ALIGN (0x8)
+                0xc0418000                _efr_fr_hr_vlpd_bss_start = ABSOLUTE (.)
+ *(.efr_fr_hr_vlpd.bss)
+                0xc0418000                . = ALIGN (0x8)
+                0xc0418000                _efr_fr_hr_vlpd_bss_end = ABSOLUTE (.)
+                0xc0418000                _memmap_seg_efr_fr_hr_vlpd_end = ALIGN (0x8)
+
+.amr_vlpd.rodata
+                0xc0428000        0x0
+                0xc0428000                _amr_vlpd_rodata_start = ABSOLUTE (.)
+ *(.amr_vlpd.rodata)
+                0xc0428000                _amr_vlpd_rodata_end = ABSOLUTE (.)
+
+.amr_vlpd.data  0xc0428000        0x0
+                0xc0428000                _amr_vlpd_data_start = ABSOLUTE (.)
+ *(.amr_vlpd.data)
+                0xc0428000                _amr_vlpd_data_end = ABSOLUTE (.)
+
+.amr_vlpd.bss   0xc0428000        0x0
+                0xc0428000                . = ALIGN (0x8)
+                0xc0428000                _amr_vlpd_bss_start = ABSOLUTE (.)
+ *(.amr_vlpd.bss)
+                0xc0428000                . = ALIGN (0x8)
+                0xc0428000                _amr_vlpd_bss_end = ABSOLUTE (.)
+                0xc0428000                _memmap_seg_amr_vlpd_end = ALIGN (0x8)
+
+.amrwb_vlpd.rodata
+                0xc0438000        0x0
+                0xc0438000                _amrwb_vlpd_rodata_start = ABSOLUTE (.)
+ *(.amrwb_vlpd.rodata)
+                0xc0438000                _amrwb_vlpd_rodata_end = ABSOLUTE (.)
+
+.amrwb_vlpd.data
+                0xc0438000        0x0
+                0xc0438000                _amrwb_vlpd_data_start = ABSOLUTE (.)
+ *(.amrwb_vlpd.data)
+                0xc0438000                _amrwb_vlpd_data_end = ABSOLUTE (.)
+
+.amrwb_vlpd.bss
+                0xc0438000        0x0
+                0xc0438000                . = ALIGN (0x8)
+                0xc0438000                _amrwb_vlpd_bss_start = ABSOLUTE (.)
+ *(.amrwb_vlpd.bss)
+                0xc0438000                . = ALIGN (0x8)
+                0xc0438000                _amrwb_vlpd_bss_end = ABSOLUTE (.)
+                0xc0438000                _memmap_seg_amrwb_vlpd_end = ALIGN (0x8)
+
+.evrc_evrcb_vlpt.text
+                0xc0448000        0x0
+                0xc0448000                _evrc_evrcb_vlpt_text_start = ABSOLUTE (.)
+ *(.evrc_evrcb_vlpt.literal .evrc_evrcb_vlpt.text)
+                0xc0448000                _evrc_evrcb_vlpt_text_end = ABSOLUTE (.)
+                0xc0448000                _memmap_seg_evrc_evrcb_vlpt_end = ALIGN (0x8)
+
+.efr_fr_hr_vlpt.text
+                0xc0490000        0x0
+                0xc0490000                _efr_fr_hr_vlpt_text_start = ABSOLUTE (.)
+ *(.efr_fr_hr_vlpt.literal .efr_fr_hr_vlpt.text)
+                0xc0490000                _efr_fr_hr_vlpt_text_end = ABSOLUTE (.)
+                0xc0490000                _memmap_seg_efr_fr_hr_vlpt_end = ALIGN (0x8)
+
+.amr_vlpt.text  0xc04c0000        0x0
+                0xc04c0000                _amr_vlpt_text_start = ABSOLUTE (.)
+ *(.amr_vlpt.literal .amr_vlpt.text)
+                0xc04c0000                _amr_vlpt_text_end = ABSOLUTE (.)
+                0xc04c0000                _memmap_seg_amr_vlpt_end = ALIGN (0x8)
+
+.amrwb_vlpt.text
+                0xc04e0000        0x0
+                0xc04e0000                _amrwb_vlpt_text_start = ABSOLUTE (.)
+ *(.amrwb_vlpt.literal .amrwb_vlpt.text)
+                0xc04e0000                _amrwb_vlpt_text_end = ABSOLUTE (.)
+                0xc04e0000                _memmap_seg_amrwb_vlpt_end = ALIGN (0x8)
+
+.vlpt.text      0xc0510000        0x0
+                0xc0510000                _vlpt_text_start = ABSOLUTE (.)
+ *(.vlpt.literal .vlpt.text)
+                0xc0510000                _vlpt_text_end = ABSOLUTE (.)
+                0xc0510000                _memmap_seg_vlpt_end = ALIGN (0x8)
+
+.low_power_dyn_alloc
+                0xc0558000        0x0
+                0xc0558000                _low_power_dyn_alloc_start = ABSOLUTE (.)
+ *(.low_power_dyn_alloc)
+                0xc0558000                _low_power_dyn_alloc_end = ABSOLUTE (.)
+                0xc0558000                _memmap_seg_vlpd_end = ALIGN (0x8)
+
+.ulpp.rodata    0xc0578000        0x0
+                0xc0578000                _ulpp_rodata_start = ABSOLUTE (.)
+ *(.ulpp.rodata)
+                0xc0578000                _ulpp_rodata_end = ABSOLUTE (.)
+
+.ulpp.data      0xc0578000        0x0
+                0xc0578000                _ulpp_data_start = ABSOLUTE (.)
+ *(.ulpp.data)
+                0xc0578000                _ulpp_data_end = ABSOLUTE (.)
+
+.ulpp.text      0xc0578000        0x0
+                0xc0578000                _ulpp_text_start = ABSOLUTE (.)
+ *(.ulpp.literal .ulpp.text)
+                0xc0578000                _ulpp_text_end = ABSOLUTE (.)
+
+.ulpp.bss       0xc0578000        0x0
+                0xc0578000                . = ALIGN (0x8)
+                0xc0578000                _ulpp_bss_start = ABSOLUTE (.)
+ *(.ulpp.bss)
+                0xc0578000                . = ALIGN (0x8)
+                0xc0578000                _ulpp_bss_end = ABSOLUTE (.)
+                0xc0578000                _memmap_seg_ulpp_end = ALIGN (0x8)
+
+.dtsv3.rodata   0xc05b8000        0x0
+                0xc05b8000                _dtsv3_rodata_start = ABSOLUTE (.)
+ *(.dtsv3.rodata)
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+ .xtensa.info   0x00000000        0x0 /scratch/speacial_projects/sof-sdk/xtensa_tools/tools/XtDevTools/install/builds/RG-2017.5-linux/hifi3_hikey960/xtensa-elf/lib/xcc//libgcc.a(_fixunsdfsi.o)
+ .xtensa.info   0x00000000        0x0 /scratch/speacial_projects/sof-sdk/xtensa_tools/tools/XtDevTools/install/builds/RG-2017.5-linux/hifi3_hikey960/xtensa-elf/lib/xcc//libgcc.a(_fixunsdfdi.o)
+ .xtensa.info   0x00000000        0x0 /scratch/speacial_projects/sof-sdk/xtensa_tools/tools/XtDevTools/install/builds/RG-2017.5-linux/hifi3_hikey960/xtensa-elf/lib/xcc//libgcc.a(_floatsidf.o)
+ .xtensa.info   0x00000000        0x0 /scratch/speacial_projects/sof-sdk/xtensa_tools/tools/XtDevTools/install/builds/RG-2017.5-linux/hifi3_hikey960/xtensa-elf/lib/xcc//libgcc.a(_floatdidf.o)
+ .xtensa.info   0x00000000        0x0 /scratch/speacial_projects/sof-sdk/xtensa_tools/tools/XtDevTools/install/builds/RG-2017.5-linux/hifi3_hikey960/xtensa-elf/lib/xcc//libgcc.a(_divdi3.o)
+ .xtensa.info   0x00000000        0x0 /scratch/speacial_projects/sof-sdk/xtensa_tools/tools/XtDevTools/install/builds/RG-2017.5-linux/hifi3_hikey960/xtensa-elf/lib/xcc//libgcc.a(_udivdi3.o)
+ .xtensa.info   0x00000000        0x0 /scratch/speacial_projects/sof-sdk/xtensa_tools/tools/XtDevTools/install/builds/RG-2017.5-linux/hifi3_hikey960/xtensa-elf/lib/xcc//libgcc.a(_umoddi3.o)
+ .xtensa.info   0x00000000        0x0 /scratch/speacial_projects/sof-sdk/xtensa_tools/tools/XtDevTools/install/builds/RG-2017.5-linux/hifi3_hikey960/xtensa-elf/lib/xcc//libgcc.a(vec_memcpy.o)
+ .xtensa.info   0x00000000        0x0 /scratch/speacial_projects/sof-sdk/xtensa_tools/tools/XtDevTools/install/builds/RG-2017.5-linux/hifi3_hikey960/xtensa-elf/lib/xcc//libgcc.a(vec_memset.o)
+ .xtensa.info   0x00000000        0x0 /scratch/speacial_projects/sof-sdk/xtensa_tools/tools/XtDevTools/install/builds/RG-2017.5-linux/hifi3_hikey960/xtensa-elf/lib/xcc//libgcc.a(softfloat_div_df.o)
+ .xtensa.info   0x00000000        0x0 /scratch/speacial_projects/sof-sdk/xtensa_tools/tools/XtDevTools/install/builds/RG-2017.5-linux/hifi3_hikey960/xtensa-elf/lib/xcc//libgcc.a(softfloat_cmn_df.o)
+ .xtensa.info   0x00000000        0x0 /scratch/speacial_projects/sof-sdk/xtensa_tools/tools/XtDevTools/install/builds/RG-2017.5-linux/hifi3_hikey960/xtensa-elf/lib/xcc//libgcc.a(softfloat_cmn_div.o)
+
+.debug.xt.callgraph
+ *(.debug.xt.callgraph .debug.xt.callgraph.* .gnu.linkonce.xt.callgraph.*)
+OUTPUT(objs/hikey/xa_hikey.o elf32-xtensa-le)
+
+.debug_ranges   0x00000000       0x98
+ .debug_ranges  0x00000000       0x20 objs/hikey/reset.o
+ .debug_ranges  0x00000020       0x58 objs/hikey/int_vector.o
+ .debug_ranges  0x00000078       0x20 objs/hikey/gdbstub-entry.o
diff --git a/hifi/xaf/hifi-dpf/build_hikey/tools/elftobin.sh b/hifi/xaf/hifi-dpf/build_hikey/tools/elftobin.sh
new file mode 100755
index 0000000..cebe6bf
--- /dev/null
+++ b/hifi/xaf/hifi-dpf/build_hikey/tools/elftobin.sh
@@ -0,0 +1,94 @@
+#!/bin/bash
+
+if [ $# != 2 ]
+then
+echo "elftobin.sh <input_elf_file> <output_img_file>"
+exit
+fi
+
+if [ $XTENSA_CORE == "" ]
+then 
+echo "XTENSA_CORE is not set"
+exit
+fi
+
+if [ $XTENSA_SYSTEM == "" ]
+then 
+echo "XTENSA_SYSTEM is not set"
+exit
+fi
+
+export INPUT_ELF_FILE=$1
+export OUTPUT_BIN_FILE=__hikey_temp.bin
+export OUTPUT_IMG_FILE=$2
+export OP_DIR=./
+
+xt-objdump -h $INPUT_ELF_FILE > __elfdump
+less __elfdump | sed -n '/ALLOC/{g;1!p;};h' > __header
+less __header | awk '{print $2 " " $3 " " $4}' > __proc
+
+sections=`less __proc | cut -f1 -d' ' | tr '\n' ',' | sed 's/\,$//g'`
+SECTION_NUM=`awk 'END {print NR}' __proc`
+echo "Total number of sections are $SECTION_NUM"
+#sections=(".dram0.data" ".ResetVector.text" ".Reset.literal" ".WindowVectors.text" ".Level2InterruptVector.literal" ".Level2InterruptVector.text" ".Level3InterruptVector.literal" ".Level3InterruptVector.text" ".DebugExceptionVector.literal" ".DebugExceptionVector.text" ".NMIExceptionVector.literal" ".NMIExceptionVector.text" ".KernelExceptionVector.literal" ".KernelExceptionVector.text" ".UserExceptionVector.literal" ".UserExceptionVector.text" ".DoubleExceptionVector.literal" ".DoubleExceptionVector.text" ".Reset.text" ".iram0.text" ".rodata" ".text" ".data" ".bss")
+#dst_addr=("0xe8058000" "0xe8080000" "0xe8080300" "0xe8080400" "0xe8080578" "0xe8080580" "0xe80805b8" "0xe80805c0" "0xe8080638" "0xe8080640" "0xe8080678" "0xe80806c0" "0xe80806f8" "0xe8080700" "0xe8080738" "0xe8080740" "0xe8080778" "0xe80807c0" "0xe8080800" "0xe8080a44" "0xc0000000" "0xc0000cc8" "0xc00025c0" "0xc0002a20")
+
+ID_Sec=("0x01010000" "0x01000001" "0x01000002" "0x01000003" "0x01000004" "0x01000005" "0x01000006" "0x01000007" "0x01000008" "0x01000009" "0x0100000A" "0x0100000B" "0x0100000C" "0x0100000D" "0x0100000E" "0x0100000F" "0x01000010" "0x01000011" "0x01000012" "0x01000013" "0x00000014" "0x00000015" "0x00010016" "0x00020017")
+
+head -c "4" /dev/zero > __zero.bin
+
+i=0
+for j in `seq 1 $SECTION_NUM`
+do
+	VAR=`less __proc | awk 'FNR == "'"$j"'" {print $1}'`
+	VARBIN=`echo "$VAR" | sed 's/^./__/' | sed "s/\..*//" | sed 's/$/.bin/' `
+	#echo "section: $VAR  $VARBIN"
+	xt-objcopy $INPUT_ELF_FILE -O binary --only-section $VAR $VARBIN
+
+	size_sec[${i}]=$(cat $VARBIN | wc -c)
+	#echo "size : ${size_sec[${i}]}"
+    mod0=`expr ${size_sec[${i}]} % 4`
+    nbytes=`expr 4 - $mod0`
+	if [ "$nbytes" -ne "4" ] ; then
+		tail -c $nbytes __zero.bin >> $VARBIN
+		size_sec[$i]=`expr ${size_sec[${i}]} + $nbytes`
+	fi
+	cat $VARBIN >> $OUTPUT_BIN_FILE		
+	i=`expr $i + 1`;
+done
+cd $OP_DIR
+
+tmp1=$(cat $OUTPUT_BIN_FILE | wc -c)
+total_sections=$SECTION_NUM
+main_header_size=32
+section_header_size=16
+size_total_img=`expr $main_header_size + $tmp1 + $total_sections \* $section_header_size`
+current_date_time=`date "+%Y/%m/%d %H:%M:%S"`
+echo "HIF:$current_date_time" > $OUTPUT_IMG_FILE
+
+printf "0: %.8x" $size_total_img | sed -e 's/0\: \(..\)\(..\)\(..\)\(..\)/0\: \4\3\2\1/' | xxd -r -g0 >> $OUTPUT_IMG_FILE
+printf "0: %.8x" $total_sections | sed -e 's/0\: \(..\)\(..\)\(..\)\(..\)/0\: \4\3\2\1/' | xxd -r -g0 >> $OUTPUT_IMG_FILE
+
+cnt1=`expr $main_header_size + $total_sections \* $section_header_size`
+i=0
+for j in `seq 1 $SECTION_NUM`
+do
+	DST_ADDR=`less __proc | awk 'FNR == "'"$j"'" {print $3}'`
+	printf "0: %.8x" ${ID_Sec[${i}]} | sed -e 's/0\: \(..\)\(..\)\(..\)\(..\)/0\: \4\3\2\1/' | xxd -r -g0 >> $OUTPUT_IMG_FILE
+	printf "0: %.8x" $cnt1 | sed -e 's/0\: \(..\)\(..\)\(..\)\(..\)/0\: \4\3\2\1/' | xxd -r -g0 >> $OUTPUT_IMG_FILE
+	printf "0: %.8x" 0x$DST_ADDR | sed -e 's/0\: \(..\)\(..\)\(..\)\(..\)/0\: \4\3\2\1/' | xxd -r -g0 >> $OUTPUT_IMG_FILE
+	printf "0: %.8x" ${size_sec[${i}]} | sed -e 's/0\: \(..\)\(..\)\(..\)\(..\)/0\: \4\3\2\1/' | xxd -r -g0 >> $OUTPUT_IMG_FILE
+	cnt_prev=$cnt1
+	cnt1=`expr ${size_sec[${i}]} + $cnt_prev`
+	i=`expr $i + 1`
+done
+
+cat $OUTPUT_BIN_FILE >> $OUTPUT_IMG_FILE                        
+rm $OUTPUT_BIN_FILE
+rm __*.bin
+rm __proc
+rm __elfdump
+rm __header
+
+echo "elftobin successful!"
+
diff --git a/hifi/xaf/hifi-dpf/build_hikey/xa_hikey.img b/hifi/xaf/hifi-dpf/build_hikey/xa_hikey.img
new file mode 100644
index 0000000..4c16652
--- /dev/null
+++ b/hifi/xaf/hifi-dpf/build_hikey/xa_hikey.img
Binary files differ
diff --git a/hifi/xaf/hifi-dpf/core/util/gdbstub/gdbstub-entry.S b/hifi/xaf/hifi-dpf/core/util/gdbstub/gdbstub-entry.S
new file mode 100644
index 0000000..50a33a9
--- /dev/null
+++ b/hifi/xaf/hifi-dpf/core/util/gdbstub/gdbstub-entry.S
@@ -0,0 +1,198 @@
+/*******************************************************************************
+* Copyright (C) 2018 Cadence Design Systems, Inc.
+* 
+* Permission is hereby granted, free of charge, to any person obtaining
+* a copy of this software and associated documentation files (the
+* "Software"), to use this Software with Cadence processor cores only and 
+* not with any other processors and platforms, subject to
+* the following conditions:
+* 
+* The above copyright notice and this permission notice shall be included
+* in all copies or substantial portions of the Software.
+* 
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+******************************************************************************/
+#include "xtensa-defs.h"
+
+.macro	SAVE_	reg, loc
+	rsr	a1, \reg
+	s32i	a1, a3, \loc * 4
+.endm
+.macro	SAVE	reg
+	SAVE_	\reg, \reg
+.endm
+
+.macro	LOAD_	reg, loc
+	l32i	a1, a3, \loc * 4
+	wsr	a1, \reg
+.endm
+.macro	LOAD	reg
+	LOAD_	\reg, \reg
+.endm
+
+	.section ".DebugExceptionVector.text", "ax"
+	.global DebugExceptionVector
+
+DebugExceptionVector:
+	j	1f
+	.align	4
+	.literal_position
+1:		
+	xsr	a2, DEBUG_EXCSAVE
+	jx	a2
+
+	.text
+	.global DebugExceptionEntry
+	.align	4
+
+DebugExceptionEntry:
+	j	1f
+	.align	4
+	.literal_position
+1:				
+	movi	a2, aregs
+	s32i	a0, a2, 0
+	s32i	a1, a2, 4
+	rsr	a1, DEBUG_EXCSAVE
+	s32i	a1, a2, 8
+	s32i	a3, a2, 12
+
+	movi	a3, sregs
+	SAVE	LBEG
+	SAVE	LEND
+	SAVE	LCOUNT
+	SAVE	SAR
+	SAVE	WINDOWBASE
+	SAVE	WINDOWSTART
+
+	rsr	a1, DEBUG_PC
+	movi	a2, initial_breakpoint
+	bne	a1, a2, 1f
+	addi	a1, a1, 3
+1:
+	s32i	a1, a3, DEBUG_PC * 4
+
+	SAVE	EXCSAVE_1
+	SAVE_	DEBUG_PS, PS
+	SAVE	EXCCAUSE
+	SAVE	DEBUGCAUSE
+	SAVE	EXCVADDR
+
+	movi	a1, XCHAL_NUM_AREGS / 4 - 1
+	movi	a2, aregs
+1:
+	s32i	a4, a2, 16
+	s32i	a5, a2, 20
+	s32i	a6, a2, 24
+	s32i	a7, a2, 28
+
+	addi	a6, a2, 16
+	addi	a5, a1, -1
+	rotw	1
+	bnez	a1, 1b
+
+	movi	a1, 1
+	wsr	a1, windowstart
+	movi	a0, 0
+	wsr	a0, windowbase
+	rsync
+
+	movi	a0, 0
+	movi	a1, stack + STACK_SIZE - 20
+	rsr	a2, ps
+	addi	a2, a2, -PS_EXCM_MASK
+	wsr	a2, ps
+	rsync
+
+	movi	a4, handle_exception
+	callx4	a4
+
+DebugExceptionExit:
+	movi	a2, DebugExceptionEntry
+	wsr	a2, DEBUG_EXCSAVE
+
+	rsr	a2, ps
+	addi	a2, a2, PS_EXCM_MASK
+	wsr	a2, ps
+	rsync
+
+	movi	a3, sregs
+	LOAD	LBEG
+	LOAD	LEND
+	LOAD	LCOUNT
+	/* TODO: handle unlikely return-to-lend case */
+	LOAD	SAR
+	LOAD	WINDOWBASE
+	rsync
+	movi	a3, sregs
+	LOAD	WINDOWSTART
+	LOAD	DEBUG_PC
+	LOAD	EXCSAVE_1
+	LOAD_	DEBUG_PS, PS
+	LOAD	EXCCAUSE
+	LOAD	EXCVADDR
+
+	movi	a6, aregs
+	movi	a5, XCHAL_NUM_AREGS / 4 - 2
+1:
+	l32i	a0, a6, 0
+	l32i	a1, a6, 4
+	l32i	a2, a6, 8
+	l32i	a3, a6, 12
+
+	beqz	a5, 2f
+	addi	a10, a6, 16
+	addi	a9, a5, -1
+	rotw	1
+	j	1b
+2:
+	l32i	a4, a6, 16
+	l32i	a5, a6, 20
+	l32i	a7, a6, 28
+	l32i	a6, a6, 24
+	rotw	2
+
+	rfi	XCHAL_DEBUGLEVEL
+
+
+#ifdef LIBC_LEVEL1_HANDLER
+	.global	fault_handler
+	.align	4
+fault_handler:
+	rsr	a2, epc1
+	addi	a2, a2, 3
+	wsr	a2, epc1
+	rsync
+	movi	a2, mem_err
+	s32i	a2, a2, 0
+
+	l32i	a2, a1, 16
+	l32i	a3, a1, 20
+	addi	a1, a1, 256
+	rfe
+#endif
+
+
+	.global init_debug_entry
+	.align	4
+init_debug_entry:
+	entry	a1, 16
+	movi	a2, DebugExceptionEntry
+	wsr	a2, DEBUG_EXCSAVE
+	isync
+	retw
+
+	.global breakpoint
+	.align	4
+breakpoint:
+	entry	a1, 16
+initial_breakpoint:
+	_break	0, 0
+	retw
diff --git a/hifi/xaf/hifi-dpf/core/util/gdbstub/gdbstub.c b/hifi/xaf/hifi-dpf/core/util/gdbstub/gdbstub.c
new file mode 100644
index 0000000..e125b94
--- /dev/null
+++ b/hifi/xaf/hifi-dpf/core/util/gdbstub/gdbstub.c
@@ -0,0 +1,756 @@
+/*******************************************************************************
+* Copyright (C) 2018 Cadence Design Systems, Inc.
+* 
+* Permission is hereby granted, free of charge, to any person obtaining
+* a copy of this software and associated documentation files (the
+* "Software"), to use this Software with Cadence processor cores only and 
+* not with any other processors and platforms, subject to
+* the following conditions:
+* 
+* The above copyright notice and this permission notice shall be included
+* in all copies or substantial portions of the Software.
+* 
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+******************************************************************************/
+
+/****************************************************************************
+
+		THIS SOFTWARE IS NOT COPYRIGHTED
+
+   HP offers the following for use in the public domain.  HP makes no
+   warranty with regard to the software or it's performance and the
+   user accepts the software "AS IS" with all faults.
+
+   HP DISCLAIMS ANY WARRANTIES, EXPRESS OR IMPLIED, WITH REGARD
+   TO THIS SOFTWARE INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+   OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+
+****************************************************************************/
+
+/****************************************************************************
+ *  Header: remcom.c,v 1.34 91/03/09 12:29:49 glenne Exp $
+ *
+ *  Module name: remcom.c $
+ *  Revision: 1.34 $
+ *  Date: 91/03/09 12:29:49 $
+ *  Contributor:     Lake Stevens Instrument Division$
+ *
+ *  Description:     low level support for gdb debugger. $
+ *
+ *  Considerations:  only works on target hardware $
+ *
+ *  Written by:      Glenn Engel $
+ *  ModuleState:     Experimental $
+ *
+ *  NOTES:           See Below $
+ *
+ *  Modified for SPARC by Stu Grossman, Cygnus Support.
+ *
+ *  This code has been extensively tested on the Fujitsu SPARClite demo board.
+ *
+ *  To enable debugger support, two things need to happen.  One, a
+ *  call to set_debug_traps() is necessary in order to allow any breakpoints
+ *  or error conditions to be properly intercepted and reported to gdb.
+ *  Two, a breakpoint needs to be generated to begin communication.  This
+ *  is most easily accomplished by a call to breakpoint().  Breakpoint()
+ *  simulates a breakpoint by executing a trap #1.
+ *
+ *************
+ *
+ *    The following gdb commands are supported:
+ *
+ * command          function                               Return value
+ *
+ *    g             return the value of the CPU registers  hex data or ENN
+ *    G             set the value of the CPU registers     OK or ENN
+ *
+ *    mAA..AA,LLLL  Read LLLL bytes at address AA..AA      hex data or ENN
+ *    MAA..AA,LLLL: Write LLLL bytes at address AA.AA      OK or ENN
+ *
+ *    c             Resume at current address              SNN   ( signal NN)
+ *    cAA..AA       Continue at address AA..AA             SNN
+ *
+ *    s             Step one instruction                   SNN
+ *    sAA..AA       Step one instruction from AA..AA       SNN
+ *
+ *    k             kill
+ *
+ *    ?             What was the last sigval ?             SNN   (signal NN)
+ *
+ * All commands and responses are sent with a packet which includes a
+ * checksum.  A packet consists of
+ *
+ * $<packet info>#<checksum>.
+ *
+ * where
+ * <packet info> :: <characters representing the command or response>
+ * <checksum>    :: < two hex digits computed as modulo 256 sum of <packetinfo>>
+ *
+ * When a packet is received, it is first acknowledged with either '+' or '-'.
+ * '+' indicates a successful transfer.  '-' indicates a failed transfer.
+ *
+ * Example:
+ *
+ * Host:                  Reply:
+ * $m0,10#2a               +$00010203040506070809101112131415#42
+ *
+ ****************************************************************************/
+#ifdef XAF_ENABLE_NON_HIKEY
+#include "xf.h"
+#else
+#include <string.h>
+#include <signal.h>
+#include <stdint.h>
+#include <xtensa/xtruntime.h>
+#endif
+#include "xtensa-defs.h"
+
+/*******************************************************************************
+ * Ring-buffer definition
+ ******************************************************************************/
+
+#define RING_SIZE           256
+
+struct ring {
+	unsigned char head;
+	unsigned char fill1[63];
+	unsigned char tail;
+	unsigned char fill2[63];
+	unsigned char data[RING_SIZE];
+};
+
+#define GDB_INVALIDATE(p)     \
+    xthal_dcache_region_invalidate((void *)(p), sizeof(*p))
+
+#define GDB_FLUSH(p)          \
+    xthal_dcache_region_writeback((void *)(p), sizeof(*p))
+
+static inline unsigned int ring_next_head(const volatile struct ring *ring)
+{
+	return (ring->head + 1) & (RING_SIZE - 1);
+}
+
+static inline unsigned int ring_next_tail(const volatile struct ring *ring)
+{
+	return (ring->tail + 1) & (RING_SIZE - 1);
+}
+
+static inline int ring_have_space(const volatile struct ring *ring)
+{
+    /* ...invalidate tail pointer of tx-ring (updated by host) */
+    GDB_INVALIDATE(&ring->tail);
+
+	return ring_next_head(ring) != ring->tail;
+}
+
+static inline int ring_have_data(const volatile struct ring *ring)
+{
+    /* ...invalidate head pointer of rx-ring (updated by host) */
+    GDB_INVALIDATE(&ring->head);
+    
+	return ring->head != ring->tail;
+}
+#ifdef XAF_ENABLE_NON_HIKEY
+#define DEBUG_RX_BASE   XF_CFG_GDB_RING_RX
+#define DEBUG_TX_BASE   XF_CFG_GDB_RING_TX
+#else
+//#define DEBUG_RX_BASE (0x72000000)
+//#define DEBUG_TX_BASE (0x72000800)
+#define DEBUG_RX_BASE (0x6FFFF000)
+#define DEBUG_TX_BASE (0x6FFFF800)
+#endif
+
+volatile struct ring * const rx = (void *)DEBUG_RX_BASE;
+volatile struct ring * const tx = (void *)DEBUG_TX_BASE;
+
+void init_debug_comm(void)
+{
+	rx->head = rx->tail = 0;
+	tx->head = tx->tail = 0;
+    GDB_FLUSH(&rx->head);
+    GDB_FLUSH(&rx->tail);
+    GDB_FLUSH(&tx->head);
+    GDB_FLUSH(&tx->tail);
+}
+
+/* ...functions defined in asm code */
+extern void breakpoint(void);
+extern void init_debug_entry(void);
+
+void poll_debug_ring(void)
+{
+	if (ring_have_data(rx)) {
+		breakpoint();
+	}
+}
+
+static void putDebugChar(char c)
+{
+	while (!ring_have_space(tx))
+		;
+
+	tx->data[tx->head] = c;
+
+    /* ...flush data buffer to main memory */
+    GDB_FLUSH(&tx->data[tx->head]);
+
+	tx->head = ring_next_head(tx);
+
+    /* ...flush head pointer to main memory */
+    GDB_FLUSH(&tx->head);
+}
+
+static int getDebugChar(void)
+{
+	int v;
+	while (!ring_have_data(rx))
+		;
+
+    /* ...inavlidate data buffer */
+    GDB_INVALIDATE(&rx->data[rx->tail]);
+
+	v = rx->data[rx->tail];
+	rx->tail = ring_next_tail(rx);
+
+    /* ...update tail index */
+    GDB_FLUSH(&rx->tail);
+
+	return v;
+}
+
+/************************************************************************/
+/* BUFMAX defines the maximum number of characters in inbound/outbound buffers*/
+/* at least NUMREGBYTES*2 are needed for register packets */
+#define BUFMAX 256
+
+#ifdef USE_GDBSTUB
+#define bulk_data __attribute__((section (".ddr0.data")))
+#else
+#define bulk_data
+#endif
+uint32_t stack[STACK_SIZE / sizeof(uint32_t)] bulk_data;
+static uint8_t sregs_read[32] bulk_data;
+static uint8_t sregs_mod[32] bulk_data;
+static uint8_t sregs_late[32] bulk_data;
+uint32_t sregs[256] bulk_data;
+uint32_t aregs[XCHAL_NUM_AREGS] bulk_data;
+static uint8_t remcomInBuffer[BUFMAX] bulk_data;
+static uint8_t remcomOutBuffer[BUFMAX] bulk_data;
+
+static const char hexchars[]="0123456789abcdef";
+
+/* Convert ch from a hex digit to an int */
+
+static int hex(unsigned char ch)
+{
+	if (ch >= 'a' && ch <= 'f')
+		return ch-'a'+10;
+	if (ch >= '0' && ch <= '9')
+		return ch-'0';
+	if (ch >= 'A' && ch <= 'F')
+		return ch-'A'+10;
+	return -1;
+}
+
+/* scan for the sequence $<data>#<checksum>     */
+
+unsigned char *getpacket(void)
+{
+	unsigned char *buffer = &remcomInBuffer[0];
+	unsigned char checksum;
+	unsigned char xmitcsum;
+	int count;
+	char ch;
+
+	while (1) {
+		/* wait around for the start character, ignore all other characters */
+		while ((ch = getDebugChar ()) != '$')
+			;
+
+retry:
+		checksum = 0;
+		xmitcsum = -1;
+		count = 0;
+
+		/* now, read until a # or end of buffer is found */
+		while (count < BUFMAX - 1) {
+			ch = getDebugChar ();
+			if (ch == '$')
+				goto retry;
+			if (ch == '#')
+				break;
+			checksum = checksum + ch;
+			buffer[count] = ch;
+			count = count + 1;
+		}
+		buffer[count] = 0;
+
+		if (ch == '#') {
+			ch = getDebugChar ();
+			xmitcsum = hex (ch) << 4;
+			ch = getDebugChar ();
+			xmitcsum += hex (ch);
+
+			if (checksum != xmitcsum) {
+				putDebugChar ('-');	/* failed checksum */
+			} else {
+				putDebugChar ('+');	/* successful transfer */
+
+				/* if a sequence char is present, reply the sequence ID */
+				if (buffer[2] == ':') {
+					putDebugChar (buffer[0]);
+					putDebugChar (buffer[1]);
+
+					return &buffer[3];
+				}
+
+				return &buffer[0];
+			}
+		}
+	}
+}
+
+/* send the packet in buffer.  */
+
+static void putpacket(uint8_t *buffer)
+{
+	unsigned char checksum;
+	int count;
+	unsigned char ch;
+
+	/*  $<packet info>#<checksum>. */
+	do {
+		putDebugChar('$');
+		checksum = 0;
+		count = 0;
+
+		while ((ch = buffer[count]) != 0) {
+			putDebugChar(ch);
+			checksum += ch;
+			count += 1;
+		}
+
+		putDebugChar('#');
+		putDebugChar(hexchars[checksum >> 4]);
+		putDebugChar(hexchars[checksum & 0xf]);
+
+	} while (getDebugChar() != '+');
+}
+
+/* Indicate to caller of mem2hex or hex2mem that there has been an
+   error.  */
+volatile int mem_err = 0;
+
+/* Convert the memory pointed to by mem into hex, placing result in buf.
+ * Return a pointer to the last char put in buf (null), in case of mem fault,
+ * return 0.
+ */
+
+static uint8_t * mem2hex(const void *mem_, uint8_t *buf, int count)
+{
+	const unsigned char *mem = mem_;
+	unsigned char ch;
+
+	mem_err = 0;
+	while (count-- > 0) {
+#ifdef __XTENSA__
+		unsigned long v;
+		unsigned long addr = (unsigned long)mem;
+		asm volatile ("_l32i	%0, %1, 0\n"
+			      : "=r"(v)
+			      : "r"(addr & ~3)
+			      : "memory");
+		ch = v >> (addr & 3) * 8;
+#endif
+		mem++;
+		if (mem_err)
+			return NULL;
+		*buf++ = hexchars[ch >> 4];
+		*buf++ = hexchars[ch & 0xf];
+	}
+
+	*buf = 0;
+
+	return buf;
+}
+
+/* convert the hex array pointed to by buf into binary to be placed in mem
+ * return a pointer to the character AFTER the last byte written */
+
+static uint8_t * hex2mem(const uint8_t *buf, void *mem_, int count)
+{
+	uint8_t *mem = mem_;
+	int i;
+	uint8_t ch;
+
+	if ((unsigned long)mem >= 0xece80000)
+		return NULL;
+
+	mem_err = 0;
+	for (i=0; i<count; i++) {
+		ch = hex(*buf++) << 4;
+		ch |= hex(*buf++);
+#ifdef __XTENSA__
+		unsigned long tmp;
+		unsigned long addr = (unsigned long)mem;
+		asm volatile ("_l32i	%0, %1, 0\n"
+			      "and	%0, %0, %2\n"
+			      "or	%0, %0, %3\n"
+			      "_s32i	%0, %1, 0\n"
+			      "dhwb	%1, 0\n"
+			      "ihi	%1, 0\n"
+			      : "=r"(tmp)
+			      : "r"(addr & ~3), "r"(0xffffffff ^ (0xff << (addr & 3) * 8)), "r"(ch << (addr & 3) * 8)
+			      : "memory");
+#endif
+		mem++;
+		if (mem_err)
+			return NULL;
+	}
+
+	return mem;
+}
+
+/*
+ * While we find nice hex chars, build an int.
+ * Return number of chars processed.
+ */
+
+static int hexToInt(uint8_t **ptr, int *intValue)
+{
+	int numChars = 0;
+	int hexValue;
+
+	*intValue = 0;
+
+	while (**ptr) {
+		hexValue = hex(**ptr);
+		if (hexValue < 0)
+			break;
+
+		*intValue = (*intValue << 4) | hexValue;
+		numChars ++;
+
+		(*ptr)++;
+	}
+
+	return (numChars);
+}
+
+static inline int test_bit(const uint8_t *p, int bit)
+{
+	return (p[bit / 8] >> (bit & 0x7)) & 1;
+}
+static inline int set_bit(uint8_t *p, int bit)
+{
+	return (p[bit / 8] |= 1u << (bit & 0x7));
+}
+
+static inline void mark_read(int sr)
+{
+	set_bit(sregs_read, sr);
+}
+static inline int is_read(int sr)
+{
+	return test_bit(sregs_read, sr);
+}
+static inline void mark_mod(int sr)
+{
+	set_bit(sregs_mod, sr);
+}
+static inline int is_mod(int sr)
+{
+	return test_bit(sregs_mod, sr);
+}
+static inline void mark_late(int sr)
+{
+	set_bit(sregs_late, sr);
+}
+static inline int is_late(int sr)
+{
+	return test_bit(sregs_late, sr);
+}
+
+static void read_sr(int sr)
+{
+	if (!is_read(sr)) {
+#ifdef __XTENSA__
+		uint32_t val;
+		asm volatile ("movi	a3, 1f + 1\n"
+			      "s8i	%1, a3, 0\n"
+			      "dhwb	a3, 0\n"
+			      "ihi	a3, 0\n"
+			      "isync\n"
+			      "1:\n"
+			      "rsr	%0, lbeg\n"
+			      : "=r"(val)
+			      : "r"(sr)
+			      : "a3", "memory");
+		sregs[sr] = val;
+#endif
+		mark_read(sr);
+	}
+}
+
+static void write_sr(int sr)
+{
+#ifdef __XTENSA__
+	asm volatile ("movi	a3, 1f + 1\n"
+		      "s8i	%1, a3, 0\n"
+		      "dhwb	a3, 0\n"
+		      "ihi	a3, 0\n"
+		      "isync\n"
+		      "1:\n"
+		      "wsr	%0, lbeg\n"
+		      :
+		      : "r"(sregs[sr]), "r"(sr)
+		      : "a3", "memory");
+#endif
+}
+
+static void restore_sr(void)
+{
+	int i;
+	for (i = 0; i < 256; ++i)
+		if (is_mod(i) && !is_late(i))
+			write_sr(i);
+}
+
+extern void *_xtos_exc_handler_table[];
+void fault_handler(void);
+#define ARRAY_SIZE(a) (sizeof(a) / sizeof(*(a)))
+
+void handle_exception(void)
+{
+	int sigval = 0;
+	int addr;
+	int length;
+	uint8_t *ptr;
+	unsigned i;
+	const unsigned windowbase = 4 * sregs[WINDOWBASE];
+	uint8_t stop_status[4] = "Sxx";
+#ifdef LIBC_LEVEL1_HANDLER
+	static const int cause[] = {
+		EXCCAUSE_LOAD_STORE_ERROR,
+		EXCCAUSE_LOAD_STORE_DATA_ERROR,
+		EXCCAUSE_LOAD_STORE_ADDR_ERROR,
+		EXCCAUSE_DTLB_MISS,
+		EXCCAUSE_DTLB_MULTIHIT,
+		EXCCAUSE_LOAD_PROHIBITED,
+		EXCCAUSE_STORE_PROHIBITED,
+	};
+	_xtos_handler handler[sizeof(cause) / sizeof(cause[0])];
+
+	for (i = 0; i < ARRAY_SIZE(cause); ++i) {
+		handler[i] = _xtos_exc_handler_table[cause[i]];
+		_xtos_exc_handler_table[cause[i]] = fault_handler;
+	}
+#endif
+	memcpy(sregs_read, sregs_late, sizeof(sregs_read));
+	memset(sregs_mod, 0, sizeof(sregs_mod));
+
+	sigval = 5;
+	stop_status[1] = hexchars[sigval >> 4];
+	stop_status[2] = hexchars[sigval & 0xf];
+
+	if (sregs[DEBUGCAUSE] & DEBUGCAUSE_ICOUNT_MASK) {
+		sregs[ICOUNTLEVEL] = 0;
+		mark_mod(ICOUNTLEVEL);
+	}
+	putpacket(stop_status);
+
+	while (1) {
+		remcomOutBuffer[0] = 0;
+
+		ptr = getpacket();
+		switch (*ptr++) {
+		case '?':
+			memcpy(remcomOutBuffer, stop_status, sizeof(stop_status));
+			break;
+
+		case 'c':    /* cAA..AA    Continue at address AA..AA(optional) */
+			/* try to read optional parameter, pc unchanged if no parm */
+
+			if (hexToInt(&ptr, &addr))
+				sregs[DEBUG_PC] = addr;
+			goto out;
+
+		case 'm':	  /* mAA..AA,LLLL  Read LLLL bytes at address AA..AA */
+			/* Try to read %x,%x.  */
+
+			if (hexToInt(&ptr, &addr) && *ptr++ == ',' &&
+			    hexToInt(&ptr, &length)) {
+				if (mem2hex((void *)addr, remcomOutBuffer, length))
+					break;
+
+				strcpy((char *)remcomOutBuffer, "E03");
+			} else {
+				strcpy((char *)remcomOutBuffer, "E01");
+			}
+			break;
+
+		case 'M': /* MAA..AA,LLLL: Write LLLL bytes at address AA.AA return OK */
+			/* Try to read '%x,%x:'.  */
+
+			if (hexToInt(&ptr, &addr) && *ptr++ == ',' &&
+			    hexToInt(&ptr, &length) && *ptr++ == ':') {
+				if (hex2mem(ptr, (void *)addr, length))
+					strcpy((char *)remcomOutBuffer, "OK");
+				else
+					strcpy((char *)remcomOutBuffer, "E03");
+			} else {
+				strcpy((char *)remcomOutBuffer, "E02");
+			}
+			break;
+
+		case 'p': /* pAA..AA read register number AA..AA */
+			if (hexToInt(&ptr, &addr)) {
+				if (addr < 0x10) { /* read address register in the current window */
+					mem2hex(aregs + addr, remcomOutBuffer, 4);
+				} else if (addr == 0x20) { /* read PC */
+					mem2hex(sregs + DEBUG_PC, remcomOutBuffer, 4);
+				} else if (addr >= 0x100 && addr < 0x100 + XCHAL_NUM_AREGS) { /* read address register by absolute index */
+					mem2hex(aregs + ((addr - windowbase) & 0xff), remcomOutBuffer, 4);
+				} else if (addr >= 0x200 && addr < 0x300) { /* read special register */
+					addr &= 0xff;
+					read_sr(addr);
+					mem2hex(sregs + addr, remcomOutBuffer, 4);
+				} else if (addr >= 0x300 && addr < 0x400) { /* TODO read user register */
+					strcpy((char *)remcomOutBuffer, "deadbabe");
+				} else { /* unexpected register number */
+					strcpy((char *)remcomOutBuffer, "E00");
+				}
+			}
+			break;
+
+		case 'P': /* PAA..AA=VV..VV  Set register number AA..AA to a value VV..VV */
+			if (hexToInt(&ptr, &addr) && *(ptr++) == '=') {
+				int ok = 1;
+
+				if (addr < 0x10) {
+					hex2mem(ptr, aregs + addr, 4);
+				} else if (addr == 0x20) {
+					hex2mem(ptr, sregs + DEBUG_PC, 4);
+				} else if (addr >= 0x100 && addr < 0x100 + XCHAL_NUM_AREGS) {
+					hex2mem(ptr, aregs + ((addr - windowbase) & 0xff), 4);
+				} else if (addr >= 0x200 && addr < 0x300) {
+					addr &= 0xff;
+					hex2mem(ptr, sregs + addr, 4);
+					mark_read(addr);
+					mark_mod(addr);
+				} else {
+					ok = 0;
+					strcpy((char *)remcomOutBuffer, "E00");
+				}
+				if (ok)
+					strcpy((char *)remcomOutBuffer, "OK");
+			}
+			break;
+
+		case 'q': /* generic query */
+			if (strncmp((char *)ptr, "Supported", 9) == 0)
+				strcpy((char *)remcomOutBuffer, "PacketSize=100"); /* must match BUFMAX */
+			break;
+
+		case 's': /* s[AA..AA] Single step */
+			if (hexToInt(&ptr, &addr))
+				sregs[DEBUG_PC] = addr;
+			sregs[ICOUNT] = 0xfffffffe;
+			mark_mod(ICOUNT);
+			sregs[ICOUNTLEVEL] = XCHAL_DEBUGLEVEL;
+			mark_mod(ICOUNTLEVEL);
+			goto out;
+
+		case 'Z': /* insert HW breakpoint*/
+			switch (*ptr++) {
+			case '1':
+				read_sr(IBREAKENABLE);
+				if (*ptr++ == ',' && hexToInt(&ptr, &addr) &&
+				    *ptr++ == ',' && hexToInt(&ptr, &length) &&
+				    *ptr == 0) {
+					for (i = 0; i < XCHAL_NUM_IBREAK; ++i) {
+						if (!(sregs[IBREAKENABLE] & (1 << i)) ||
+						    sregs[IBREAKA + i] == addr) {
+							sregs[IBREAKA + i] = addr;
+							mark_mod(IBREAKA + i);
+							sregs[IBREAKENABLE] |= (1 << i);
+							mark_mod(IBREAKENABLE);
+							break;
+						}
+					}
+					if (i == XCHAL_NUM_IBREAK)
+						strcpy((char *)remcomOutBuffer, "E02");
+					else
+						strcpy((char *)remcomOutBuffer, "OK");
+				} else {
+					strcpy((char *)remcomOutBuffer, "E01");
+				}
+				break;
+			}
+			break;
+
+		case 'z': /* remove HW breakpoint */
+			switch (*ptr++) {
+			case '1':
+				read_sr(IBREAKENABLE);
+				if (*ptr++ == ',' && hexToInt(&ptr, &addr) &&
+				    *ptr++ == ',' && hexToInt(&ptr, &length)) {
+					for (i = 0; i < XCHAL_NUM_IBREAK; ++i) {
+						read_sr(IBREAKA + i);
+						if (sregs[IBREAKENABLE] & (1 << i) &&
+						    sregs[IBREAKA + i] == addr) {
+							sregs[IBREAKENABLE] &= ~(1 << i);
+							mark_mod(IBREAKENABLE);
+							break;
+						}
+					}
+					if (i == XCHAL_NUM_IBREAK)
+						strcpy((char *)remcomOutBuffer, "E02");
+					else
+						strcpy((char *)remcomOutBuffer, "OK");
+				} else {
+					strcpy((char *)remcomOutBuffer, "E01");
+				}
+				break;
+			}
+			break;
+		}
+
+		/* reply to the request */
+		putpacket(remcomOutBuffer);
+	}
+out:
+#ifdef LIBC_LEVEL1_HANDLER
+	for (i = 0; i < ARRAY_SIZE(cause); ++i) {
+		_xtos_exc_handler_table[cause[i]] = handler[i];
+	}
+#endif
+	restore_sr();
+}
+
+void init_gdbstub(void)
+{
+	mark_late(LBEG);
+	mark_late(LEND);
+	mark_late(LCOUNT);
+	mark_late(SAR);
+	mark_late(WINDOWBASE);
+	mark_late(WINDOWSTART);
+	mark_late(DEBUG_PC);
+	mark_late(EXCSAVE_1);
+	mark_late(PS);
+	mark_late(EXCCAUSE);
+	mark_late(DEBUGCAUSE);
+	mark_late(EXCVADDR);
+#ifdef __XTENSA__
+	init_debug_comm();
+	init_debug_entry();
+#endif
+}
diff --git a/hifi/xaf/hifi-dpf/core/util/gdbstub/xtensa-defs.h b/hifi/xaf/hifi-dpf/core/util/gdbstub/xtensa-defs.h
new file mode 100644
index 0000000..6ba485f
--- /dev/null
+++ b/hifi/xaf/hifi-dpf/core/util/gdbstub/xtensa-defs.h
@@ -0,0 +1,37 @@
+/*******************************************************************************
+* Copyright (C) 2018 Cadence Design Systems, Inc.
+* 
+* Permission is hereby granted, free of charge, to any person obtaining
+* a copy of this software and associated documentation files (the
+* "Software"), to use this Software with Cadence processor cores only and 
+* not with any other processors and platforms, subject to
+* the following conditions:
+* 
+* The above copyright notice and this permission notice shall be included
+* in all copies or substantial portions of the Software.
+* 
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+******************************************************************************/
+
+#ifndef XTENSA_DEFS_H
+#define XTENSA_DEFS_H
+
+#include <xtensa/specreg.h>
+#include <xtensa/config/core-isa.h>
+#include <xtensa/corebits.h>
+
+#define _AREG0		256
+
+#define STACK_SIZE	1024
+#define DEBUG_PC	(EPC + XCHAL_DEBUGLEVEL)
+#define DEBUG_EXCSAVE	(EXCSAVE + XCHAL_DEBUGLEVEL)
+#define DEBUG_PS	(EPS + XCHAL_DEBUGLEVEL)
+
+#endif /* XTENSA_DEFS_H */
diff --git a/hifi/xaf/hifi-dpf/core/util/mutex.c b/hifi/xaf/hifi-dpf/core/util/mutex.c
new file mode 100644
index 0000000..d62a6a1
--- /dev/null
+++ b/hifi/xaf/hifi-dpf/core/util/mutex.c
@@ -0,0 +1,156 @@
+/*******************************************************************************
+* Copyright (C) 2018 Cadence Design Systems, Inc.
+* 
+* Permission is hereby granted, free of charge, to any person obtaining
+* a copy of this software and associated documentation files (the
+* "Software"), to use this Software with Cadence processor cores only and 
+* not with any other processors and platforms, subject to
+* the following conditions:
+* 
+* The above copyright notice and this permission notice shall be included
+* in all copies or substantial portions of the Software.
+* 
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+******************************************************************************/
+
+/*******************************************************************************
+ * mutex.c
+ *
+ * Implementation of non-robust Szymanski linear-waiting algorithm. Types of
+ * failures tolerated by Szymanski's "robust" algorithm are not specific for
+ * Xtensa DSP cluster and therefore more lightweight version of the algorithm
+ * is used. FIFO servicing property is of low importance, and faster/smaller
+ * version with linear-wait property is preferable.
+ ******************************************************************************/
+ 
+#include "xf.h"
+
+/*******************************************************************************
+ * Local constants definitions
+ ******************************************************************************/
+
+/* ...communication variables */
+#define __M_A                           (1 << 0)
+#define __M_W                           (1 << 1)
+#define __M_S                           (1 << 2)
+
+/* ...process states (updated atomically) */
+#define M_PASSIVE                       (0)
+#define M_ENTRY                         (__M_A)
+#define M_INSIDE                        (__M_W)
+#define M_TRANSIENT                     (__M_S | __M_W)
+#define M_EXIT                          (__M_S)
+
+/* ...total number of cores */
+#define M_N                             XF_CFG_CORES_NUM
+
+/* ...do not compile the code if there is just a single core */
+#if M_N > 1
+/*******************************************************************************
+ * Entry points
+ ******************************************************************************/
+
+void mutex_lock(u32 i)
+{
+    u32     j;
+    
+    /* ...p1: i-th core goes into "entry" state (aws = true,false,false) */
+    MUTEX_SHARED_WRITE(i, M_ENTRY);
+
+    /* ...p2: wait all processes have sj=false (waiting room door is open) */
+    for (j = 0; j < M_N; j++)
+    {
+        /* ...wait until sj = false */
+        while (MUTEX_SHARED_READ(j) & __M_S) (void) 0;
+    }
+    
+    /* ...p3: i-th core enters "inside" state (aws = false,true,false) */
+    MUTEX_SHARED_WRITE(i, M_INSIDE);
+
+p4:
+    /* ...p4: wait in "inside" state */
+    for (j = 0; j < M_N; j++)
+    {
+        /* ...p5: check if any of the cores appears is in "entry" state (aj=true) */
+        if (MUTEX_SHARED_READ(j) & __M_A)
+        {
+            /* ...p5: found core in "entry" state (j < n); wait until it enters waiting room */
+            goto p7;
+        }
+    }
+
+    /* ...p6: j == n; enter into "transient" state (ai=false, wi=true, si=true) */
+    MUTEX_SHARED_WRITE(i, M_TRANSIENT);
+
+    /* ...p6.1: check for any core appearing in "entry" room */
+    for (j = 0; j < M_N; j++)
+    {
+        if (MUTEX_SHARED_READ(j) & __M_A)
+        {
+            /* ...p6.2: found core in "entry" state (j < n) */
+            MUTEX_SHARED_WRITE(i, M_INSIDE);
+
+            /* ...back of to the "inside" state */
+            goto p7;
+        }
+    }
+        
+    /* ...p6.3: no cores in "entry" room (j == n); go to "exit" state (ai=false, wi=false, si=true) */
+    MUTEX_SHARED_WRITE(i, M_EXIT);
+
+    /* ...p6.4: allow all cores to leave "transient" state (i.e. switch to "exit") */
+    for (j = 0; j < M_N; j++)
+    {
+        while (MUTEX_SHARED_READ(j) & __M_W) (void) 0;
+    }
+
+    goto p9;
+    
+p7:
+    /* ...j < n condition is met; find any cores in "inside" state (wj = true, sj = false) */
+    for (j = 0; j < M_N; j++)
+    {
+        /* ...check if the core is in "exit" state */
+        if (MUTEX_SHARED_READ(j) == M_EXIT)
+        {
+            /* ...p8.1: different core is a leader; go to "exit" state (ai=false, wi=false, si=true) */
+            MUTEX_SHARED_WRITE(i, M_EXIT);
+
+            goto p9;
+        }
+    }
+
+    /* ...wait in "inside" state while all transients settle */
+    goto p4;
+
+p9:
+    /* ...p9: i-th core is in "exit" state; enter critical section in accordance with numbering */
+    for (j = 0; j < i; j++)
+    {
+        /* ...wait until core with lower number in "inside"/"transient"/"exit" states leaves */
+        while (MUTEX_SHARED_READ(j) & (__M_W | __M_S)) (void) 0;
+    }
+    
+    /* ...critical section entered */
+}
+
+/*******************************************************************************
+ * mutex_unlock
+ *
+ * Release multi-core mutex
+ ******************************************************************************/
+
+void mutex_unlock(u32 i)
+{
+    /* ...enter into "passive" state (ai=false, wi=false, si=false) */
+    MUTEX_SHARED_WRITE(i, M_PASSIVE);
+}
+
+#endif  /* M_N > 1 */
diff --git a/hifi/xaf/hifi-dpf/core/util/rbtree.c b/hifi/xaf/hifi-dpf/core/util/rbtree.c
new file mode 100644
index 0000000..740e025
--- /dev/null
+++ b/hifi/xaf/hifi-dpf/core/util/rbtree.c
@@ -0,0 +1,842 @@
+/*******************************************************************************
+* Copyright (C) 2018 Cadence Design Systems, Inc.
+* 
+* Permission is hereby granted, free of charge, to any person obtaining
+* a copy of this software and associated documentation files (the
+* "Software"), to use this Software with Cadence processor cores only and 
+* not with any other processors and platforms, subject to
+* the following conditions:
+* 
+* The above copyright notice and this permission notice shall be included
+* in all copies or substantial portions of the Software.
+* 
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+******************************************************************************/
+
+/*******************************************************************************
+ * rbtree.c
+ *
+ * Red-black tree library
+ ******************************************************************************/
+
+#include "xf.h"
+
+/*******************************************************************************
+ * Macros definitions
+ ******************************************************************************/
+
+/* ...node color */
+#define RB_RED                          (1)
+#define RB_BLK                          (0)
+
+/* ...pointer to parent node */
+#define RB_PARENT(tree, node)           ((node)->parent)
+
+/* ...pointer to left child node */
+#define RB_LEFT(tree, node)             ((node)->left)
+
+/* ...pointer to right child node */
+#define RB_RIGHT(tree, node)            ((node)->right)
+
+/* ...pointer to right child node */
+#define RB_COLOR(tree, node)            ((node)->color & 1)
+
+/* ...check if node is black */
+#define RB_IS_BLACK(tree, node)         (!((node)->color & RB_RED))
+
+/* ...root node index of the tree - can be simplified? */
+#define RB_ROOT(tree)                   RB_LEFT((tree), &(tree)->root)
+
+/* ...empty node */
+#define RB_NULL(tree)                   (&(tree)->root)
+
+/*******************************************************************************
+ * Helpers
+ ******************************************************************************/
+
+#define RB_SET_P(t, n, p)               \
+    ({ (n)->parent = (p); })
+
+#define RB_SET_L(t, n, l)               \
+    ({ (n)->left = (l); })
+
+#define RB_SET_R(t, n, r)               \
+    ({ (n)->right = (r); })
+
+#define RB_SET_C(t, n, c)               \
+    RB_SET_C_##c((t), (n))
+
+#define RB_SET_C_RB_BLK(t, n)           \
+    ({ (n)->color &= ~1; })
+
+#define RB_SET_C_RB_RED(t, n)           \
+    ({ (n)->color |= 1; })
+
+#define RB_SET_P_C(t, n, p, c)          \
+    ({ (n)->parent = (p); RB_SET_C_##c(t, n); })
+
+#define RB_SET_P_L(t, n, p, l)          \
+    ({ (n)->parent = (p); (n)->left = (l); })
+
+#define RB_SET_P_L_C(t, n, p, l, c)     \
+    ({ (n)->parent = (p); (n)->left = (l); RB_SET_C_##c(t, n); })
+
+#define RB_SET_P_R(t, n, p, r)          \
+    ({ (n)->parent = (p); (n)->right = (r); })
+
+#define RB_SET_P_R_C(t, n, p, r, c)     \
+    ({ (n)->parent = (p); (n)->right = (r); RB_SET_C_##c(t, n); })
+
+#define RB_SET_P_L_R(t, n, p, l, r)     \
+    ({ (n)->parent = (p); (n)->left = (l); (n)->right = (r); })
+
+#define RB_SET_P_L_R_C(t, n, p, l, r, c)\
+    ({ (n)->parent = (p); (n)->left = (l); (n)->right = (r); RB_SET_C_##c(t, n); })
+
+#define RB_SET_ROOT(t, n)               \
+    RB_SET_L((t), &(t)->root, (n))
+
+/*******************************************************************************
+ * RB-tree functions
+ ******************************************************************************/
+
+/*******************************************************************************
+ * rb_first, rb_last
+ *
+ * Return pointer to first/last item in the tree
+ ******************************************************************************/
+
+rb_idx_t rb_first(rb_tree_t *tree)
+{
+    rb_idx_t    p_idx, t_idx;
+    
+    if ((p_idx = RB_ROOT(tree)) != RB_NULL(tree))
+    {
+        /* ...find left-most item in non-empty tree */
+        while ((t_idx = RB_LEFT(tree, p_idx)) != RB_NULL(tree))
+            p_idx = t_idx;
+    }
+    
+    return p_idx;
+}
+
+rb_idx_t rb_last(rb_tree_t *tree)
+{
+    rb_idx_t    p_idx, t_idx;
+    
+    if ((p_idx = RB_ROOT(tree)) != RB_NULL(tree))
+    {
+        /* ...find right-most item in non-empty tree */
+        while ((t_idx = RB_RIGHT(tree, p_idx)) != RB_NULL(tree))
+            p_idx = t_idx;
+    }
+    
+    return p_idx;
+}
+
+/*******************************************************************************
+ * rb_next, rb_prev
+ *
+ * Return next / previous in-order item in the tree
+ ******************************************************************************/
+
+rb_idx_t rb_next(rb_tree_t *tree, rb_idx_t n_idx)
+{
+    rb_idx_t    p_idx, c_idx, t_idx;
+    
+    /* ...if we have any right children, process them */
+    if ((c_idx = RB_RIGHT(tree, n_idx)) != RB_NULL(tree))
+    {
+        /* ...descent to the left-most node starting from right child */
+        while ((t_idx = RB_LEFT(tree, c_idx)) != RB_NULL(tree))
+            c_idx = t_idx;
+        return c_idx;
+    }
+    
+    /* ...no right children; ascend to our parent while we are right child */
+    while ((p_idx = RB_PARENT(tree, n_idx)) != RB_NULL(tree))
+    {
+        /* ...as soon as "n" is a left child, return "p" */
+        if (n_idx == RB_RIGHT(tree, p_idx))
+            n_idx = p_idx;
+        else
+            return p_idx;
+    }
+    
+    /* ...we were right-most child */
+    return p_idx;
+}
+
+rb_idx_t rb_prev(rb_tree_t *tree, rb_idx_t n_idx)
+{
+    rb_idx_t    p_idx, c_idx, t_idx;
+    
+    /* ...if we have any left children, process them */
+    if ((c_idx = RB_LEFT(tree, n_idx)) != RB_NULL(tree))
+    {
+        /* ...descent to the right-most node starting from left child */
+        while ((t_idx = RB_RIGHT(tree, c_idx)) != RB_NULL(tree))
+            c_idx = t_idx;
+        return c_idx;
+    }
+    
+    /* ...no left children; ascend to our parent while we are left child */
+    while ((p_idx = RB_PARENT(tree, n_idx)) != RB_NULL(tree))
+    {
+        /* ...as soon as "n" is a right child, return "p" */
+        if (n_idx == RB_LEFT(tree, p_idx))
+            n_idx = p_idx;
+        else
+            return p_idx;
+    }
+    
+    /* ...we were left-most child */
+    return p_idx;
+}
+
+/*******************************************************************************
+ * rb_init
+ *
+ * Initialize rb-tree structure
+ ******************************************************************************/
+
+void rb_init(rb_tree_t *tree)
+{
+    /* ...initialize sentinel node of the empty tree */
+    RB_SET_P_L_R_C(tree, &tree->root, RB_NULL(tree), RB_NULL(tree), RB_NULL(tree), RB_BLK);
+}
+
+/*******************************************************************************
+ * rb_insert
+ *
+ * Insert new item into RB-tree. Returns non-zero node index on success
+ ******************************************************************************/
+
+/* ...internal tree balancing function */
+static void __rb_insert_balance(rb_tree_t *tree, rb_idx_t n_idx, rb_idx_t p_idx)
+{
+	rb_idx_t    u_idx, g_idx, t_idx, cl_idx, cr_idx;
+
+rebalance:
+
+	/***************************************************************************
+	 * Trivial case #1 - N (red) is a root
+	 **************************************************************************/
+
+	if (p_idx == RB_NULL(tree))
+    {
+		RB_SET_C(tree, n_idx, RB_BLK);
+		goto root;
+	}
+
+	/***************************************************************************
+	 * Trivial case #2 - P is black
+	 **************************************************************************/
+
+	if (RB_IS_BLACK(tree, p_idx))
+		goto done;
+
+	/***************************************************************************
+	 * Complex cases - P is red, N is red
+	 **************************************************************************/
+
+	/* ...grandparent must exist and be black */
+	g_idx = RB_PARENT(tree, p_idx);
+	if (p_idx == RB_LEFT(tree, g_idx))
+    {
+		/* ...we are left grandchild; get uncle (if it exists) */
+		u_idx = RB_RIGHT(tree, g_idx);
+
+		/* ...if U is read, we have conditions of case #3 */
+		if (!RB_IS_BLACK(tree, u_idx))
+			goto case3;
+
+		/* ...we will need grand-grand-parent later */
+		t_idx = RB_PARENT(tree, g_idx);
+
+		/* ...U is black/null; if we are LL grandchild, we have case #5 */
+		if (n_idx == RB_LEFT(tree, p_idx))
+			goto case5_ll;
+
+		/* ...N is RL grandchild of G; case #4 */
+		goto case4_rl;
+	}
+    else
+    {
+		/* ...we are right grandchild; get uncle (if it exists) */
+		u_idx = RB_LEFT(tree, g_idx);
+
+		/* ...if U is read, we have conditions of case #3 */
+		if (!RB_IS_BLACK(tree, u_idx))
+			goto case3;
+
+		/* ...we will need grand-grand-parent later */
+		t_idx = RB_PARENT(tree, g_idx);
+
+		/* ...U is black/null; if we are RR grandchild, we have case #5 */
+		if (n_idx == RB_RIGHT(tree, p_idx))
+			goto case5_rr;
+
+		/* ...N is LR grandchild of G; case #4 */
+		goto case4_lr;
+	}
+
+case4_rl:
+
+	/***************************************************************************
+	 * Case #4 - P is red, U is black, N is red RL grandchild of G. We will do
+	 * two tree rotations - first the one described in case #4, second is the
+	 * one described in case #5 (as have conditions for case #5(LL) with P and
+	 * N changing roles
+	 **************************************************************************/
+
+	cl_idx = RB_LEFT(tree, n_idx), cr_idx = RB_RIGHT(tree, n_idx);
+	RB_SET_P_L_R_C(tree, n_idx, t_idx, p_idx, g_idx, RB_BLK);
+	RB_SET_P_R(tree, p_idx, n_idx, cl_idx);
+	RB_SET_P(tree, cl_idx, p_idx);
+	RB_SET_P_L_C(tree, g_idx, n_idx, cr_idx, RB_RED);
+	RB_SET_P(tree, cr_idx, g_idx);
+
+	/* ...new root of subtree is N; adjust T pointer */
+	goto case5_xx;
+
+case4_lr:
+
+	/***************************************************************************
+	 * Case #4 - P is red, U is black, N is red LR grandchild of G. We will do
+	 * two tree rotations - first the one described in case #4, second is the
+	 * one described in case #5 (as have conditions for case #5(RR) with P and
+	 * N changing roles
+	 **************************************************************************/
+
+	cl_idx = RB_LEFT(tree, n_idx), cr_idx = RB_RIGHT(tree, n_idx);
+	RB_SET_P_L_R_C(tree, n_idx, t_idx, g_idx, p_idx, RB_BLK);
+	RB_SET_P_L(tree, p_idx, n_idx, cr_idx);
+	RB_SET_P(tree, cr_idx, p_idx);
+	RB_SET_P_R_C(tree, g_idx, n_idx, cl_idx, RB_RED);
+	RB_SET_P(tree, cl_idx, g_idx);
+
+	/* ...new root of the subtree is N; adjust T pointer */
+	goto case5_xx;
+
+case5_ll:
+
+	/***************************************************************************
+	 * Case #5: N is LL grandchild of P; N and P red, G and U black
+	 **************************************************************************/
+
+	cr_idx = RB_RIGHT(tree, p_idx);
+	RB_SET_P_L_C(tree, g_idx, p_idx, cr_idx, RB_RED);
+	RB_SET_P(tree, cr_idx, g_idx);
+	RB_SET_P_R_C(tree, p_idx, t_idx, g_idx, RB_BLK);
+
+	/* ...new root of the subtree is P; relabel and adjust T pointer */
+	n_idx = p_idx;
+	goto case5_xx;
+
+case5_rr:
+
+	/***************************************************************************
+	 * Case #5: N is RR grandchild of P; N and P red, G and U black
+	 **************************************************************************/
+
+	cl_idx = RB_LEFT(tree, p_idx);
+	RB_SET_P_R_C(tree, g_idx, p_idx, cl_idx, RB_RED);
+	RB_SET_P(tree, cl_idx, g_idx);
+	RB_SET_P_L_C(tree, p_idx, t_idx, g_idx, RB_BLK);
+
+	/* ...new root of the subtree is P; relabel and adjust T pointer */
+	n_idx = p_idx;
+	goto case5_xx;
+
+case5_xx:
+
+	/* ...N is a (black) root of subtree; check if it is a root of tree as well */
+    if (t_idx == RB_NULL(tree))
+        goto root;
+    else if (g_idx == RB_LEFT(tree, t_idx))
+        RB_SET_L(tree, t_idx, n_idx);
+    else
+        RB_SET_R(tree, t_idx, n_idx);
+    
+    goto done;
+
+case3:
+
+	/***************************************************************************
+	 * Case #3 - P and U are red, G is black
+	 **************************************************************************/
+
+	RB_SET_C(tree, p_idx, RB_BLK);
+	RB_SET_C(tree, u_idx, RB_BLK);
+	RB_SET_C(tree, g_idx, RB_RED);
+
+	/* ...rebalance the tree for a G */
+	n_idx = g_idx, p_idx = RB_PARENT(tree, g_idx);
+	goto rebalance;
+
+root:
+	/* ...adjust root pointer of the tree */
+	RB_SET_ROOT(tree, n_idx);
+
+done:
+	/* ...tree is balanced */
+	return;
+}
+
+/* ...high-level API function */
+void rb_insert(rb_tree_t *tree, rb_idx_t n_idx, rb_idx_t p_idx)
+{
+    if (p_idx == RB_NULL(tree))
+    {
+        /* ...set black root node */
+		RB_SET_P_L_R_C(tree, n_idx, p_idx, p_idx, p_idx, RB_BLK);
+
+        /* ...tree consists of the only root node; is balanced */
+		RB_SET_ROOT(tree, n_idx);
+    }
+    else
+    {
+        /* ...create new node - set parent pointer and paint red */
+        RB_SET_P_L_R_C(tree, n_idx, p_idx, RB_NULL(tree), RB_NULL(tree), RB_RED);
+
+        /* ...and rebalance the tree */
+        __rb_insert_balance(tree, n_idx, p_idx);
+    }
+}
+
+/*******************************************************************************
+ * rb_delete
+ *
+ * Remove item from RB-key (by key). Returns zero on success
+ ******************************************************************************/
+
+/* ...internal tree balancing function */
+static void __rb_delete_rebalance(rb_tree_t *tree, rb_idx_t p_idx)
+{
+	rb_idx_t    n_idx, s_idx, sl_idx, sr_idx, g_idx, c_idx, cl_idx, cr_idx;
+
+    /* ...initialize rebalancing procedure with null-child of P */
+    n_idx = RB_NULL(tree);
+    
+rebalance:
+
+	/* ...save grand-parent pointer (may be null) */
+	g_idx = RB_PARENT(tree, p_idx);
+
+	/***************************************************************************
+	 * Check for complex cases
+	 **************************************************************************/
+
+	if (n_idx == RB_LEFT(tree, p_idx))
+    {
+		/* ...N is left child; get sibling (must exist) and its children  */
+		s_idx = RB_RIGHT(tree, p_idx);
+		sl_idx = RB_LEFT(tree, s_idx);
+		sr_idx = RB_RIGHT(tree, s_idx);
+
+		/* ...if S is black, test for conditions 3,4,5,6; otherwise - case 2 */
+		if (RB_IS_BLACK(tree, s_idx))
+			goto test3_l;
+		else
+			goto case2_l;
+	}
+    else
+    {
+		/* ...N is right child; get sibling (must exist) and its children */
+		s_idx = RB_LEFT(tree, p_idx);
+		sl_idx = RB_LEFT(tree, s_idx);
+		sr_idx = RB_RIGHT(tree, s_idx);
+
+		/* ...if S is black, test for conditions 3,4,5,6; otherwise - case 2 */
+		if (RB_IS_BLACK(tree, s_idx))
+			goto test3_r;
+		else
+			goto case2_r;
+	}
+
+case2_l:
+
+	/***************************************************************************
+	 * Case #2: N is a left child of P; S is red
+	 **************************************************************************/
+
+	c_idx = sl_idx;
+	RB_SET_P_L_C(tree, s_idx, g_idx, p_idx, RB_BLK);
+	RB_SET_P_R_C(tree, p_idx, s_idx, c_idx, RB_RED);
+	RB_SET_P(tree, c_idx, p_idx);
+
+	/* ...S is new root of subtree, Sl(C) is new sibling of N; update G */
+	goto case2_x;
+
+case2_r:
+
+	/***************************************************************************
+	 * Case #2: N is a right child of P; S is red
+	 **************************************************************************/
+
+	c_idx = sr_idx;
+	RB_SET_P_R_C(tree, s_idx, g_idx, p_idx, RB_BLK);
+	RB_SET_P_L_C(tree, p_idx, s_idx, c_idx, RB_RED);
+	RB_SET_P(tree, c_idx, p_idx);
+
+	/* ...S is new root of subtree, Sr(C) is new sibling of N; update G */
+	goto case2_x;
+
+case2_x:
+
+	/* ...check if S is becoming new (black) root of the tree */
+    if (g_idx == RB_NULL(tree))
+        RB_SET_ROOT(tree, s_idx);
+    else if (p_idx == RB_LEFT(tree, g_idx))
+        RB_SET_L(tree, g_idx, s_idx);
+    else
+        RB_SET_R(tree, g_idx, s_idx);
+
+	/* ...relabel new N's grandparent (now S) as G and new sibling (now C) as S	 */
+	g_idx = s_idx, s_idx = c_idx;
+	sl_idx = RB_LEFT(tree, s_idx);
+	sr_idx = RB_RIGHT(tree, s_idx);
+
+	/* ...N is still one of P's children; select proper side */
+	if (n_idx == RB_LEFT(tree, p_idx))
+		goto test3_l;
+	else
+		goto test3_r;
+
+test3_l:
+
+	/***************************************************************************
+	 * Test for cases 3,4,5,6; P is any, S is black. N is left child of P
+	 **************************************************************************/
+    
+    if (!RB_IS_BLACK(tree, sr_idx))
+		/* ...Sr is red, Sl of any color; conditions for case #6 are met */
+		goto case6_l;
+    else if (!RB_IS_BLACK(tree, sl_idx))
+        /* ...Sr is black and Sl is red; conditions for case #5 are met */
+        goto case5_l;
+    else if (RB_IS_BLACK(tree, p_idx))
+        /* ...Sl and Sr are of the same (black) color and P is black */
+        goto case3;
+    else
+        /* ...Sl and Sr are of the same (black) color and P is red */
+        goto case4;
+
+test3_r:
+
+	/***************************************************************************
+	 * Test for cases 3,4,5,6; P is any, S is black. N is right child of P
+	 **************************************************************************/
+
+    if (!RB_IS_BLACK(tree, sl_idx))
+		/* ...Sl is red, Sr of any color; conditions for case #6 are met */
+		goto case6_r;
+    else if (!RB_IS_BLACK(tree, sr_idx))
+        /* ...Sl is black and Sr is red; conditions for case #5 are met */
+        goto case5_r;
+    else if (RB_IS_BLACK(tree, p_idx))
+        /* ...Sl and Sr are of the same (black) color and P is black */
+        goto case3;
+    else
+        /* ...Sl and Sr are of the same (black) color and P is red */
+        goto case4;
+
+case3:
+
+	/***************************************************************************
+	 * Case #3: N, P, S, Sl and Sr are black
+	 **************************************************************************/
+
+	RB_SET_C(tree, s_idx, RB_RED);
+
+	/* ...and rebalance the tree for parent */
+	n_idx = p_idx, p_idx = RB_PARENT(tree, p_idx);
+
+	if (p_idx == RB_NULL(tree))
+		goto done;
+	else
+		goto rebalance;
+
+case4:
+
+	/***************************************************************************
+	 * Case #4: N and S are black, P is red, Sl and Sr are all black
+	 **************************************************************************/
+
+	RB_SET_C(tree, s_idx, RB_RED);
+	RB_SET_C(tree, p_idx, RB_BLK);
+
+	goto done;
+
+case5_l:
+	/***************************************************************************
+	 * Case #5: S is black, Sl is red, Sr is black; N is left child of P. We
+	 * have two subsequent transformations (case #5 and case #6) combined
+	 **************************************************************************/
+
+	cl_idx = RB_LEFT(tree, sl_idx);
+	cr_idx = RB_RIGHT(tree, sl_idx);
+
+	if (RB_IS_BLACK(tree, p_idx))
+		RB_SET_P_L_R_C(tree, sl_idx, g_idx, p_idx, s_idx, RB_BLK);
+	else
+		RB_SET_P_L_R_C(tree, sl_idx, g_idx, p_idx, s_idx, RB_RED);
+
+	RB_SET_P_R_C(tree, p_idx, sl_idx, cl_idx, RB_BLK);
+	RB_SET_P(tree, cl_idx, p_idx);
+	RB_SET_P_L(tree, s_idx, sl_idx, cr_idx);
+	RB_SET_P(tree, cr_idx, s_idx);
+
+	/* ...relabel new root as S (for common processing in case #6) */
+	s_idx = sl_idx;
+	goto case6_x;
+
+case5_r:
+	/***************************************************************************
+	 * Case #5: S is black, Sr is red, Sl is black; N is right child of P. We
+	 * have two subsequent transformations (case #5 and case #6) combined
+	 **************************************************************************/
+
+	cl_idx = RB_LEFT(tree, sr_idx);
+	cr_idx = RB_RIGHT(tree, sr_idx);
+
+	if (RB_IS_BLACK(tree, p_idx))
+		RB_SET_P_L_R_C(tree, sr_idx, g_idx, s_idx, p_idx, RB_BLK);
+	else
+		RB_SET_P_L_R_C(tree, sr_idx, g_idx, s_idx, p_idx, RB_RED);
+
+	RB_SET_P_L_C(tree, p_idx, sr_idx, cr_idx, RB_BLK);
+	RB_SET_P(tree, cr_idx, p_idx);
+	RB_SET_P_R(tree, s_idx, sr_idx, cl_idx);
+	RB_SET_P(tree, cl_idx, s_idx);
+
+	/* ...relabel new root as S (for common processing in case #6) */
+	s_idx = sr_idx;
+	goto case6_x;
+
+case6_l:
+
+	/***************************************************************************
+	 * Case #6: S is black, N is the left child of P, Sr is red
+	 **************************************************************************/
+
+	if (RB_IS_BLACK(tree, p_idx))
+		RB_SET_P_L(tree, s_idx, g_idx, p_idx);
+	else
+		RB_SET_P_L_C(tree, s_idx, g_idx, p_idx, RB_RED);
+
+	RB_SET_P_R_C(tree, p_idx, s_idx, sl_idx, RB_BLK);
+	RB_SET_P(tree, sl_idx, p_idx);
+	RB_SET_C(tree, sr_idx, RB_BLK);
+
+	/* ...S is a new root of subtree; update G */
+	goto case6_x;
+
+case6_r:
+
+	/***************************************************************************
+	 * Case #6: S is black, N is the right child of P, Sl is red
+	 **************************************************************************/
+
+	if (RB_IS_BLACK(tree, p_idx))
+		RB_SET_P_R(tree, s_idx, g_idx, p_idx);
+	else
+		RB_SET_P_R_C(tree, s_idx, g_idx, p_idx, RB_RED);
+
+	RB_SET_P_L_C(tree, p_idx, s_idx, sr_idx, RB_BLK);
+	RB_SET_P(tree, sr_idx, p_idx);
+	RB_SET_C(tree, sl_idx, RB_BLK);
+
+	/* ...S is a new root of subtree; update G */
+	goto case6_x;
+
+case6_x:
+
+	/* ...S is a new root of subtree; update G's pointer */
+    if (g_idx == RB_NULL(tree))
+		RB_SET_ROOT(tree, s_idx);
+    else if (p_idx == RB_LEFT(tree, g_idx))
+        RB_SET_L(tree, g_idx, s_idx);
+    else
+        RB_SET_R(tree, g_idx, s_idx);
+
+	/* ...tree is balanced; pass through */
+
+done:
+
+	return;
+}
+
+/* ...high-level API function */
+rb_idx_t rb_delete(rb_tree_t *tree, rb_idx_t n_idx)
+{
+	rb_idx_t    p_idx, t_idx, m_idx, c_idx, l_idx, r_idx, k_idx;
+    u32         color;
+    
+    /* ...save parent of element N that we are going to remove */
+    p_idx = RB_PARENT(tree, n_idx);
+
+	/* ...get in-order predecessor/successor of n_idx, if possible */
+	if ((m_idx = RB_LEFT(tree, n_idx)) != RB_NULL(tree))
+    {
+		while ((t_idx = RB_RIGHT(tree, m_idx)) != RB_NULL(tree))
+			m_idx = t_idx;
+
+        /* ...set the child of in-order predecessor (may be null) */
+		c_idx = RB_LEFT(tree, m_idx);   
+	}
+    else if ((m_idx = RB_RIGHT(tree, n_idx)) != RB_NULL(tree))
+    {
+		while ((t_idx = RB_LEFT(tree, m_idx)) != RB_NULL(tree))
+			m_idx = t_idx;
+
+        /* ...set the child of in-order successor (may be null) */
+		c_idx = RB_RIGHT(tree, m_idx);
+	}
+    else if (p_idx == RB_NULL(tree))
+    {
+        /* ...tree consists of the only root node N that we are removing */
+        RB_SET_ROOT(tree, m_idx);
+
+        /* ..return tree null pointer */
+        return m_idx;
+    }
+    else
+    {
+        /* ...N is a (non-root) leaf node; M and C are null */
+		c_idx = m_idx;
+
+        /* ...save the color of the node we are going to delete */
+        color = RB_COLOR(tree, n_idx);
+                        
+        /* ...set new parent of C */
+        t_idx = p_idx;
+        
+        /* ...pointer that we return as in-order predecessor/successor */
+        k_idx = p_idx;
+        
+        /* ...adjust only parent of the N */
+        goto adjust_parent;
+    }
+
+    /* ...node that replaces our component is M */
+    k_idx = m_idx;
+    
+	/***************************************************************************
+	 * Replace node N with M
+	 **************************************************************************/
+
+    /* ...save original color of M (the node that we are deleting) */
+    color = RB_COLOR(tree, m_idx);    
+
+    /* ...put M in place of N; get N's children */
+    l_idx = RB_LEFT(tree, n_idx);
+    r_idx = RB_RIGHT(tree, n_idx);
+
+    /* ...see if M is a child of N */
+    if ((t_idx = RB_PARENT(tree, m_idx)) != n_idx)
+    {
+        /* ...C becomes left or right child of M's original parent T */
+        if (c_idx == RB_LEFT(tree, m_idx))
+            RB_SET_R(tree, t_idx, c_idx);
+        else
+            RB_SET_L(tree, t_idx, c_idx);
+        
+        /* ...adjust C parent pointer (okay if it's null)  */
+        RB_SET_P(tree, c_idx, t_idx);
+
+        /* ...set all pointers of node M (it replaces N) */
+        RB_SET_P_L_R(tree, m_idx, p_idx, l_idx, r_idx);
+        RB_SET_P(tree, l_idx, m_idx);
+        RB_SET_P(tree, r_idx, m_idx);
+    }
+    else
+    {
+        /* ...M is a left or right child of N; it gets to N's place, and C remains intact */
+        if (m_idx == l_idx)
+        {
+            RB_SET_P_R(tree, m_idx, p_idx, r_idx);
+            RB_SET_P(tree, r_idx, m_idx);
+        }
+        else
+        {
+            RB_SET_P_L(tree, m_idx, p_idx, l_idx);
+            RB_SET_P(tree, l_idx, m_idx);
+        }
+
+        /* ...parent of C is still M (we label it as T) */
+        t_idx = m_idx;
+    }
+
+    /* ...paint M in the same color as N which it replaced */
+    if (RB_IS_BLACK(tree, n_idx))
+        RB_SET_C(tree, m_idx, RB_BLK);
+    else
+        RB_SET_C(tree, m_idx, RB_RED);
+    
+adjust_parent:
+
+    /* ...adjust N's parent node to point to M */
+    if (p_idx == RB_NULL(tree))
+        RB_SET_ROOT(tree, m_idx);
+    else if (n_idx == RB_LEFT(tree, p_idx))
+        RB_SET_L(tree, p_idx, m_idx);
+    else
+        RB_SET_R(tree, p_idx, m_idx);
+
+	/* ...check for a color of deleted item (M or N in case it is a leaf) */
+	if (color == RB_BLK)
+    {
+		if (c_idx == RB_NULL(tree))
+            /* ...rebalance the tree for a T node (it is never a null)*/
+            __rb_delete_rebalance(tree, t_idx);
+		else
+            /* ...C node exists and is necessarily red; repaint it black */
+            RB_SET_C(tree, c_idx, RB_BLK);
+	}
+
+    /* ....return the node K which replaced deleted node N */
+    return k_idx;
+}
+
+/*******************************************************************************
+ * rb_replace
+ *
+ * Replace the node with the same-key node - adjust tree pointers
+ ******************************************************************************/
+
+void rb_replace(rb_tree_t *tree, rb_idx_t n_idx, rb_idx_t t_idx)
+{
+    rb_idx_t    p_idx, l_idx, r_idx;
+    
+    /* ...get node pointers */
+    p_idx = RB_PARENT(tree, n_idx), l_idx = RB_LEFT(tree, n_idx), r_idx = RB_RIGHT(tree, n_idx);
+
+    /* ...set new node pointers */
+    RB_SET_P_L_R(tree, t_idx, p_idx, l_idx, r_idx);
+    
+    /* ...set node color */
+    if (RB_IS_BLACK(tree, n_idx))
+        RB_SET_C(tree, t_idx, RB_BLK);
+    else
+        RB_SET_C(tree, t_idx, RB_RED);
+
+    /* ...update parent node */
+    if (p_idx == RB_NULL(tree))
+        RB_SET_ROOT(tree, t_idx);
+    else if (n_idx == RB_LEFT(tree, p_idx))
+        RB_SET_L(tree, p_idx, t_idx);
+    else
+        RB_SET_R(tree, p_idx, t_idx);
+    
+    /* ...update children's parent node (okay if null) */
+    RB_SET_P(tree, l_idx, t_idx), RB_SET_P(tree, r_idx, t_idx); 
+}
diff --git a/hifi/xaf/hifi-dpf/core/util/tinyvprintf.c b/hifi/xaf/hifi-dpf/core/util/tinyvprintf.c
new file mode 100644
index 0000000..25d7e03
--- /dev/null
+++ b/hifi/xaf/hifi-dpf/core/util/tinyvprintf.c
@@ -0,0 +1,198 @@
+/*******************************************************************************
+* Copyright (C) 2018 Cadence Design Systems, Inc.
+* 
+* Permission is hereby granted, free of charge, to any person obtaining
+* a copy of this software and associated documentation files (the
+* "Software"), to use this Software with Cadence processor cores only and 
+* not with any other processors and platforms, subject to
+* the following conditions:
+* 
+* The above copyright notice and this permission notice shall be included
+* in all copies or substantial portions of the Software.
+* 
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+******************************************************************************/
+
+
+#include <string.h>
+#include "lib/tinyput.h"
+
+
+/*
+ *  Simple formatted output routine.
+ *  Designed primarily for small size (and secondarily for efficiency).
+ *  Only a common subset of printf formats and options are handled:
+ *
+ *	%[-+ ][0][width]i	decimal signed integer
+ *	%[-+ ][0][width]d	decimal signed integer
+ *	%[-][0][width]u		decimal unsigned integer
+ *	%[-][0][width]x		hex unsigned integer
+ *	%[-][0][width]p		hex unsigned integer with 0x prefix ("pointer")
+ *	%[-][width]c		single character
+ *	%[-][width]s		string
+ *
+ *  These modifiers are ignored (legally on 32-bit Xtensa):
+ *	#           (alternate format)
+ *	h           (short)			expands to int on 32-bit Xtensa
+ *	l           (long)			same as int on 32-bit Xtensa
+ *	j           (intmax_t or uintmax_t)	same as int on 32-bit Xtensa
+ *	z           (size_t or ssize_t)		same as int on 32-bit Xtensa
+ *	t           (ptrdiff_t)			same as int on 32-bit Xtensa
+ *
+ *  Does NOT support:
+ *	width.prec  (precision modifier)
+ *	%X          (capitalized hex; handles this as lowercase hex)
+ *	%o          (octal)
+ *	%[L][feEgG] (floating point formats)
+ *	%a %A       (hex floating point formats, C99)
+ *	%C          (multibyte character)
+ *	%S          (multibyte character string)
+ *	%n          (returning count of character written)
+ *	ll          (long long)
+ *	q j z t     (other size modifiers, eg. see glibc)
+ */
+int tiny_vsprintf(char *out, const char *fmt, va_list ap)
+{
+    int total = 0;
+    char c, space = ' ', buf[11];	/* largest 32-bit integer output (octal) */
+
+    while ((c = *(char*)fmt++) != 0) {
+        if (c != '%') {
+            *out++ = c;
+            total++;
+        } else {
+            int width = 0, len = 1, rightjust = 1;
+            unsigned n;
+            char *s = buf, *t, pad = ' ', sign = 0;
+            while (1) {
+                c = *(char*)fmt++;
+                switch (c) {
+                case 'c':	buf[0] = va_arg(ap, int);		goto donefmt;
+                case 's':	s = va_arg(ap, char*);
+                    if (s == 0)
+                        len = 0;
+                    else {
+                        for (t = s; *t; t++) ;
+                        len = t - s;
+                    }
+                    goto donefmt;
+
+                case '#':	/* ignore (not supported) */
+                case 'h':	/* ignore (short; passed as int) */
+                case 'l':	/* ignore (long; same as int) */
+                case 'j':	/* ignore (intmax_t or uintmax_t; same as int) */
+                case 'z':	/* ignore (size_t or ssize_t; same as int) */
+                case 't':	/* ignore (ptrdiff_t; same as int) */
+                    break;
+
+                case ' ':	sign = ' ';				break;
+                case '+':	sign = '+';				break;
+                case '-':	rightjust = 0;				break;
+
+                case 'i':	/*FALLTHROUGH*/
+                case 'd':	n = va_arg(ap, int);
+                if ((int)n < 0) {
+                    sign = '-';
+                    n = -(int)n;
+                }
+                if (sign) {
+                    if (rightjust && pad == ' ')
+                        *s++ = sign;
+                    else {
+                        *out++ = sign;
+                        width--;
+                        total++;
+                    }
+                }
+                goto do_decimal;
+                case 'u':	n = va_arg(ap, int);
+                do_decimal:
+                {
+                    /*  (avoids division or multiplication)  */
+                    int digit, i, seen = 0;
+                    for (digit = 0; n >= 1000000000; digit++)
+                        n -= 1000000000;
+                    for (i = 9;;) {
+                        if (!seen && digit != 0)
+                            seen = i;
+                        if (seen)
+                            *s++ = '0' + digit;
+                        for (digit = 0; n >= 100000000; digit++)
+                            n -= 100000000;
+                        if (--i == 0) {
+                            *s++ = '0' + digit;
+                            len = s - buf;
+                            s = buf;
+                            goto donefmt;
+                        }
+                        n = ((n << 1) + (n << 3));
+                    }
+                }
+                /*NOTREACHED*/
+
+#if 0
+                case 'o':	n = va_arg(ap, unsigned);
+                    s = buf + 11;
+                    do {
+                        *--s = '0' + (n & 7);
+                        n = (unsigned)n >> 3;
+                    } while (n);
+                    len = buf + 11 - s;
+                    goto donefmt;
+#endif
+
+                case 'p':	*out++ = '0', *out++ = 'x';
+                    total += 2;
+                    /*FALLTHROUGH*/
+                case 'X':	/*FALLTHROUGH*/
+                case 'x':	n = va_arg(ap, unsigned);
+                s = buf + 8;
+                do {
+                    *--s = "0123456789abcdef"[n & 0xF];
+                    n = (unsigned)n >> 4;
+                } while (n);
+                len = buf + 8 - s;
+                goto donefmt;
+
+                case 0:	goto done;
+                case '0':	if (width == 0) pad = '0';		/*FALLTHROUGH*/
+                default:	if (c >= '0' && c <= '9')
+                    width = ((width<<1) + (width<<3)) + (c - '0');
+                else {
+                    buf[0] = c;		/* handles case of '%' */
+                    goto donefmt;
+                }
+                }
+            }
+            /*NOTREACHED*/
+        donefmt:
+            if (len < width) {
+                total += width;
+                if (rightjust)
+                    do { *out++ = pad; } while (len < --width);
+            } else
+                total += len;
+            for(n = len; n > 0; n--) *out++ = *s++;
+            for (; len < width; len++) *out++ = space;
+        }
+    }
+done:
+    return total;
+}
+
+int tiny_sprintf(char *out, const char *fmt, ...)
+{
+  int n = 0;
+  va_list ap;
+  va_start(ap, fmt);
+  n = tiny_vsprintf(out, fmt, ap);
+  va_end(ap);
+  return n;
+}
diff --git a/hifi/xaf/hifi-dpf/core/xf-core.c b/hifi/xaf/hifi-dpf/core/xf-core.c
new file mode 100644
index 0000000..95bca12
--- /dev/null
+++ b/hifi/xaf/hifi-dpf/core/xf-core.c
@@ -0,0 +1,709 @@
+/*******************************************************************************
+* Copyright (C) 2018 Cadence Design Systems, Inc.
+* 
+* Permission is hereby granted, free of charge, to any person obtaining
+* a copy of this software and associated documentation files (the
+* "Software"), to use this Software with Cadence processor cores only and 
+* not with any other processors and platforms, subject to
+* the following conditions:
+* 
+* The above copyright notice and this permission notice shall be included
+* in all copies or substantial portions of the Software.
+* 
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+******************************************************************************/
+
+/*******************************************************************************
+ * xf-core.c
+ *
+ * DSP processing framework core
+ *
+ ******************************************************************************/
+
+#define MODULE_TAG                      CORE
+
+/*******************************************************************************
+ * Includes
+ ******************************************************************************/
+
+#include "xf.h"
+
+/*******************************************************************************
+ * Tracing tags
+ ******************************************************************************/
+
+/* ...general initialization sequence */
+TRACE_TAG(INIT, 1);
+
+/* ...message dispatching */
+TRACE_TAG(DISP, 1);
+
+/* ...client registration procedures */
+TRACE_TAG(REG, 1);
+
+/* ...ports routing/unrouting */
+TRACE_TAG(ROUTE, 1);
+
+#ifdef XAF_PROFILE_DSP
+/* ... MCPS/profile info */
+#include "xa_profiler.h"
+#endif
+/*******************************************************************************
+ * Internal helpers
+ ******************************************************************************/
+
+/* ...translate client-id into component handle */
+static inline xf_component_t * xf_client_lookup(xf_core_data_t *cd, u32 client)
+{
+    xf_cmap_link_t *link = &cd->cmap[client];
+
+    /* ...if link pointer is less than XF_CFG_MAX_CLIENTS, it is a free descriptor */
+    return (link->next > XF_CFG_MAX_CLIENTS ? link->c : NULL);
+}
+
+/* ...allocate client-id */
+static inline u32 xf_client_alloc(xf_core_data_t *cd)
+{
+    u32     client = cd->free;
+
+    /* ...advance list head to next free id */
+    (client < XF_CFG_MAX_CLIENTS ? cd->free = cd->cmap[client].next : 0);
+
+    return client;
+}
+
+/* ...recycle client-id */
+static inline void xf_client_free(xf_core_data_t *cd, u32 client)
+{
+    /* ...put client into the head of the free id list */
+    cd->cmap[client].next = cd->free, cd->free = client;
+}
+
+/*******************************************************************************
+ * Process commands to a proxy
+ ******************************************************************************/
+
+/* ...register new client */
+static int xf_proxy_register(u32 core, xf_message_t *m)
+{
+    xf_core_data_t *cd = XF_CORE_DATA(core);
+    u32             src = XF_MSG_SRC(m->id);
+    u32             client;
+    xf_component_t *component;
+    
+    /* ...allocate new client-id */
+    XF_CHK_ERR((client = xf_client_alloc(cd)) != XF_CFG_MAX_CLIENTS, -EBUSY);
+    
+    /* ...create component via class factory */
+    if ((component = xf_component_factory(core, m->buffer, m->length)) == NULL)
+    {
+        TRACE(ERROR, _x("Component creation failed"));
+        
+        /* ...recycle client-id */
+        xf_client_free(cd, client);
+        
+        /* ...return generic out-of-memory code always (tbd) */
+        return -ENOMEM;
+    }
+
+    /* ...register component in a map */
+    cd->cmap[client].c = component;
+
+    /* ...set component "default" port specification ("destination") */
+    component->id = __XF_PORT_SPEC(core, client, 0);
+    
+    /* ...adjust session-id to include newly created component-id */
+    m->id = __XF_MSG_ID(src, component->id);
+
+    /* ...do system-specific registration of component within IPC layer */
+    xf_ipc_component_addref(m->id);
+    
+    TRACE(REG, _b("registered client: %u:%u (%s)"), core, client, (xf_id_t)m->buffer);
+
+    /* ...and return success to remote proxy (zero-length output) */
+    xf_response_ok(m);
+    
+    return 0;
+}
+
+/* ...shared buffer allocation request */
+static int xf_proxy_alloc(u32 core, xf_message_t *m)
+{
+    /* ...command is valid only if shared memory interface for core is specified */
+    XF_CHK_ERR(xf_shmem_enabled(core), -EPERM);
+
+    /* ...allocate shared memory buffer (system-specific function; may fail) */
+    xf_shmem_alloc(core, m);
+
+    /* ...pass result to remote proxy (on success buffer is non-null) */
+    xf_response(m);
+
+    return 0;
+}
+
+/* ...shared buffer freeing request */
+static int xf_proxy_free(u32 core, xf_message_t *m)
+{
+    /* ...command is valid only if shared memory interface for core is specified */
+    XF_CHK_ERR(xf_shmem_enabled(core), -EPERM);
+    
+    /* ...pass buffer freeing request to system-specific function */
+    xf_shmem_free(core, m);
+
+    /* ...return success to remote proxy (function never fails) */
+    xf_response(m);
+        
+    return 0;
+}
+
+#if 0
+/* ...port routing command processing */
+static int xf_proxy_route(u32 core, xf_message_t *m)
+{
+    xf_route_port_msg_t    *cmd = m->buffer;
+    u32                     src = cmd->src;
+    u32                     dst = cmd->dst;
+    xf_component_t         *component;
+    xf_output_port_t       *port;
+
+    /* ...source component must reside on the local core */
+    XF_CHK_ERR(XF_MSG_SRC_CORE(src) == core, -EINVAL);
+    
+    /* ...make sure the "src" component is valid ("dst" may reside on other core) */
+    if ((component = xf_client_lookup(XF_CORE_DATA(core), XF_PORT_CLIENT(src))) == NULL)
+    {
+        TRACE(ERROR, _x("Source port lookup failed: %x"), src);
+        return -ENOENT;
+    }
+    else if (!component->port || !(port = component->port(component, XF_PORT_ID(src))))
+    {
+        TRACE(ERROR, _b("Source port doesn't exist: %x"), src);
+        return -ENOENT;
+    }
+    else if (xf_output_port_routed(port))
+    {
+        TRACE(ERROR, _b("Source port is already routed: %x"), src);
+        return -EBUSY;
+    }
+
+    /* ...route output port with source port set as destination */
+    XF_CHK_API(xf_output_port_route(port, __XF_MSG_ID(dst, src), cmd->alloc_number, cmd->alloc_size, cmd->alloc_align));
+  
+    TRACE(ROUTE, _b("Ports routed: %03x -> %03x"), src, dst);
+
+    /* ...invoke component data-processing function directly (ignore errors? - tbd) */
+    component->entry(component, NULL);
+
+    /* ...return success result code (no output attached) */
+    xf_response_ok(m);
+
+    return 0;
+}
+
+/* ...disconnect ports */
+static int xf_proxy_unroute(u32 core, xf_message_t *m)
+{
+    xf_unroute_port_msg_t  *cmd = m->buffer;
+    u32                     src = cmd->src;
+    xf_component_t         *component;
+    xf_output_port_t       *port;
+
+    /* ...source component must reside on the local core */
+    XF_CHK_ERR(XF_MSG_SRC_CORE(src) == core, -EINVAL);
+
+    /* ...lookup source (output) port */
+    if ((component = xf_client_lookup(XF_CORE_DATA(core), XF_PORT_CLIENT(src))) == NULL)
+    {
+        TRACE(ERROR, _b("Source port lookup failed: %x"), src);
+        return -ENOENT;
+    }
+    else if (!component->port || !(port = component->port(component, XF_PORT_ID(src))))
+    {
+        TRACE(ERROR, _b("Source port doesn't exist: %x"), src);
+        return -ENOENT;
+    }
+    else if (!xf_output_port_routed(port))
+    {
+        /* ...port is not routed; satisfy immediately */
+        goto done;
+    }
+    else if (!xf_output_port_idle(port))
+    {
+        TRACE(ERROR, _b("Source port is not idle: %x"), src);
+        return -EBUSY;
+    }
+
+    /* ...unroute port (call must succeed) */
+    xf_output_port_unroute(port);
+
+    /* ...we cannot satisfy the command now, and need to propagate it to a sink - tbd */
+    //return 0;
+
+done:
+    /* ...pass success result code to caller */
+    xf_response_ok(m);
+
+    return 0;
+}
+#endif
+
+/* ...fill-this-buffer command processing */
+static int xf_proxy_output(u32 core, xf_message_t *m)
+{
+    /* ...determine destination "client" */
+    switch (XF_MSG_SRC_CLIENT(m->id))
+    {
+#if XF_TRACE_REMOTE
+    case 0:
+        /* ...destination is a tracer facility; submit buffer to tracer */
+        xf_trace_submit(core, m);
+        return 0;
+#endif
+
+    default:
+        /* ...unrecognized destination; return general failure response */
+        return XF_CHK_ERR(0, -EINVAL);
+    }
+}
+
+/* ...flush command processing */
+static int xf_proxy_flush(u32 core, xf_message_t *m)
+{
+    /* ...determine destination "client" */
+    switch (XF_MSG_SRC_CLIENT(m->id))
+    {
+#if XF_TRACE_REMOTE
+    case 0:
+        /* ...destination is a tracer facility; flush current buffer */
+        xf_trace_flush(core, m);
+        return 0;
+#endif
+
+    default:
+        /* ...unrecognized destination; return general failure response */
+        return XF_CHK_ERR(0, -EINVAL);
+    }
+}
+
+/* ...proxy command processing table */
+static int (* const xf_proxy_cmd[])(u32, xf_message_t *) = 
+{
+    [XF_OPCODE_TYPE(XF_REGISTER)] = xf_proxy_register,
+    [XF_OPCODE_TYPE(XF_ALLOC)] = xf_proxy_alloc,
+    [XF_OPCODE_TYPE(XF_FREE)] = xf_proxy_free,
+#if 0
+    [XF_OPCODE_TYPE(XF_ROUTE)] = xf_proxy_route,
+    [XF_OPCODE_TYPE(XF_UNROUTE)] = xf_proxy_unroute,
+#endif
+    [XF_OPCODE_TYPE(XF_FILL_THIS_BUFFER)] = xf_proxy_output,
+    [XF_OPCODE_TYPE(XF_FLUSH)] = xf_proxy_flush,
+};
+
+/* ...total number of commands supported */
+#define XF_PROXY_CMD_NUM        (sizeof(xf_proxy_cmd) / sizeof(xf_proxy_cmd[0]))
+
+/* ...process commands to a proxy */
+static void xf_proxy_command(u32 core, xf_message_t *m)
+{
+    u32     opcode = m->opcode;
+    int     res;
+
+    /* ...dispatch command to proper hook */
+    if (XF_OPCODE_TYPE(opcode) < XF_PROXY_CMD_NUM)
+    {
+        if ((res = xf_proxy_cmd[XF_OPCODE_TYPE(opcode)](core, m)) >= 0)
+        {
+            /* ...command processed successfully; do nothing */
+            return;
+        }
+    }
+    else
+    {
+        TRACE(ERROR, _x("invalid opcode: %x"), opcode);
+    }
+
+    /* ...command processing failed; return generic failure response */
+    xf_response_err(m);
+}
+
+/*******************************************************************************
+ * Message completion helper
+ ******************************************************************************/
+
+/* ...put message into local IPC command queue on remote core (src != dst) */
+static inline void xf_msg_local_ipc_put(u32 src, u32 dst, xf_message_t *m)
+{
+    xf_core_rw_data_t  *rw = XF_CORE_RW_DATA(dst);    
+    int                 first;
+    
+    /* ...flush message payload if needed */
+    if (XF_LOCAL_IPC_NON_COHERENT)
+    {
+        /* ...it may be a command with output payload only - tbd */
+        XF_PROXY_FLUSH(m->buffer, m->length);
+    }
+
+    /* ...acquire mutex to target rw-data (running on source core) */
+    xf_mutex_lock(src);
+
+    /* ...assure memory coherency as needed */
+    if (XF_LOCAL_IPC_NON_COHERENT)
+    {
+        /* ...invalidate local queue data */
+        XF_PROXY_INVALIDATE(&rw->local, sizeof(rw->local));
+        
+        /* ...place message into queue */
+        first = xf_msg_enqueue(&rw->local, m);
+        
+        /* ...flush both queue and message data */
+        XF_PROXY_FLUSH(&rw->local, sizeof(rw->local)), XF_PROXY_FLUSH(m, sizeof(*m));
+    }
+    else
+    {
+        /* ...just enqueue the message */
+        first = xf_msg_enqueue(&rw->local, m);
+    }
+    
+    /* ...release global rw-memory access lock */
+    xf_mutex_unlock(src);
+
+    /* ...signal IPI interrupt on destination core as needed */
+    (first ? xf_ipi_assert(dst), 1 : 0);
+}
+
+/* ...dequeue message from core-specific dispatch queue */
+static inline xf_message_t * xf_msg_local_ipc_get(u32 core)
+{
+    xf_core_rw_data_t  *rw = XF_CORE_RW_DATA(core);
+    xf_message_t       *m;
+    
+    /* ...retrieve message from queue in atomic fashion */
+    xf_mutex_lock(core);
+
+    /* ...process memory coherency as required */
+    if (XF_LOCAL_IPC_NON_COHERENT)
+    {
+        /* ...inavlidate local rw-data */
+        XF_PROXY_INVALIDATE(&rw->local, sizeof(rw->local));
+        
+        /* ...get message from the queue */
+        if ((m = xf_msg_dequeue(&rw->local)) != NULL)
+        {
+            /* ...flush rw-queue data */
+            XF_PROXY_FLUSH(&rw->local, sizeof(rw->local));
+        }
+    }
+    else
+    {
+        /* ...just dequeue message from the queue */
+        m = xf_msg_dequeue(&rw->local);
+    }
+    
+    /* ...release rw-memory access lock */
+    xf_mutex_unlock(core);
+
+    /* ...invalidate message header and data as needed */
+    if (XF_LOCAL_IPC_NON_COHERENT && m != NULL)
+    {
+        /* ...invalidate message header */
+        XF_PROXY_INVALIDATE(m, sizeof(*m));
+        
+        /* ...and data if needed (it may not be always needed - tbd) */
+        (m->length ? XF_PROXY_INVALIDATE(m->buffer, m->length) : 0);
+    }
+
+    /* ...return message */
+    return m;
+}
+
+/* ...retrieve message from local queue (protected from ISR) */
+static inline int xf_msg_local_put(u32 core, xf_message_t *m)
+{
+    xf_core_data_t *cd = XF_CORE_DATA(core);
+    int             first;
+    u32             status;
+    
+    /* ...use interrupt masking protocol to protect message queue */
+    status = xf_isr_disable(core);
+    first = xf_msg_enqueue(&cd->queue, m);
+    xf_isr_restore(core, status);
+    
+    return first;
+}
+
+/* ...retrieve message from local queue (protected from ISR) */
+static inline xf_message_t * xf_msg_local_get(u32 core)
+{
+    xf_core_data_t *cd = XF_CORE_DATA(core);
+    xf_message_t   *m;
+    u32             status;
+    
+    /* ...use interrupt masking protocol to protect message queue */
+    status = xf_isr_disable(core);
+    m = xf_msg_dequeue(&cd->queue);
+    xf_isr_restore(core, status);
+    
+    return m;
+}
+
+/* ...retrieve message from local queue (protected from ISR) */
+static inline xf_message_t * xf_msg_local_response_get(u32 core)
+{
+    xf_core_data_t *cd = XF_CORE_DATA(core);
+    xf_message_t   *m;
+    u32             status;
+    
+    /* ...use interrupt masking protocol to protect message queue */
+    status = xf_isr_disable(core);
+    m = xf_msg_dequeue(&cd->response);
+    xf_isr_restore(core, status);
+    
+    return m;
+}
+
+/* ...call component data processing function */
+static inline void xf_core_process(xf_component_t *component)
+{
+    u32     id = component->id;
+    
+    /* ...client look-up successfull */
+    TRACE(DISP, _b("core[%u]::client[%u]::process"), XF_PORT_CORE(id), XF_PORT_CLIENT(id));
+
+    /* ...call data-processing interface */
+    if (component->entry(component, NULL) < 0)
+    {
+        TRACE(ERROR, _b("execution error (ignored)"));
+    }
+}
+
+/* ...dispatch message queue execution */
+static inline void xf_core_dispatch(xf_core_data_t *cd, u32 core, xf_message_t *m)
+{
+    u32             client;
+    xf_component_t *component;
+
+    /* ...do client-id/component lookup */
+    if (XF_MSG_DST_PROXY(m->id))
+    {
+        TRACE(DISP, _b("core[%u]::proxy-cmd(id=%x, opcode=%x)"), core, m->id, m->opcode);
+        
+        /* ...process message addressed to proxy */
+        xf_proxy_command(core, m);
+
+        /* ...do not like this return statement... - tbd */
+        return;
+    }
+
+    /* ...message goes to local component */
+    client = XF_MSG_DST_CLIENT(m->id);
+    
+    /* ...check if client is alive */
+    if ((component = xf_client_lookup(cd, client)) != NULL)
+    {
+        /* ...client look-up successfull */
+        TRACE(DISP, _b("core[%u]::client[%u]::cmd(id=%x, opcode=%x)"), core, client, m->id, m->opcode);
+            
+        /* ...pass message to component entry point */
+        if (component->entry(component, m) < 0)
+        {
+            /* ...call component destructor */
+            if (component->exit(component, m) == 0)
+            {
+                /* ...component cleanup completed; recycle component-id */
+                xf_client_free(cd, client);
+
+                /* ...do system-specific deregistration of component within IPC layer */
+                xf_ipc_component_rmref(__XF_PORT_SPEC(core, client, 0));
+            }
+        }
+    }
+    else
+    {
+        TRACE(DISP, _b("Discard message id=%x - client %u:%u not registered"), m->id, core, client);
+        
+        /* ...complete message with general failure response */   
+        xf_response_err(m);
+    }
+}
+
+/*******************************************************************************
+ * Entry points
+ ******************************************************************************/
+
+/* ...submit message for instant execution on some core */
+void xf_msg_submit(xf_message_t *m)
+{
+    u32     src = XF_MSG_SRC_CORE(m->id);
+    u32     dst = XF_MSG_DST_CORE(m->id);
+
+    /* ...check if message shall go through local IPC layer */
+    if (src ^ dst)
+    {
+        /* ...put message into local IPC queue */
+        xf_msg_local_ipc_put(src, dst, m);
+    }
+    else
+    {
+        /* ...message is addressed to same core */
+        xf_msg_local_put(src, m);
+    }
+}
+
+/* ...complete message and pass response to a caller */
+void xf_msg_complete(xf_message_t *m)
+{
+    u32     src = XF_MSG_SRC(m->id);
+    u32     dst = XF_MSG_DST(m->id);
+
+    /* ...swap src/dst specifiers */
+    m->id = __XF_MSG_ID(dst, src);
+
+    /* ...check if message goes to remote IPC layer */
+    if (XF_MSG_DST_PROXY(m->id))
+    {
+        /* ...return message to proxy */
+        xf_msg_proxy_complete(m);
+    }
+    else
+    {
+        /* ...destination is within DSP cluster; check if that is a data buffer */
+        switch (m->opcode)
+        {
+        case XF_EMPTY_THIS_BUFFER:
+            /* ...emptied buffer goes back to the output port */
+            m->opcode = XF_FILL_THIS_BUFFER;
+            break;
+
+        case XF_FILL_THIS_BUFFER:
+            /* ...filled buffer is passed to the input port */
+            m->opcode = XF_EMPTY_THIS_BUFFER;
+            break;
+        }
+
+        /* ...submit message for execution */
+        xf_msg_submit(m);
+    }
+}
+
+/* ...initialize per-core framework data */
+int xf_core_init(u32 core)
+{
+    xf_core_data_t     *cd = XF_CORE_DATA(core);
+    xf_cmap_link_t     *link;
+    u32                 i;
+    
+    /* ...create list of free client descriptors */
+    for (link = &cd->cmap[i = 0]; i < XF_CFG_MAX_CLIENTS; i++, link++)
+    {
+        link->next = i + 1;
+    }
+
+    /* ...set head of free clients list */
+    cd->free = 0;
+    
+    /* ...initialize local queue scheduler */
+    xf_sched_init(&cd->sched);
+
+    /* ...initialize IPI subsystem */
+    XF_CHK_API(xf_ipi_init(core));
+    
+    /* ...initialize shared read-write memory */
+    XF_CHK_API(xf_shmem_enabled(core) ? xf_shmem_init(core) : 0);
+
+    /* ...initialize scratch memory */
+    XF_CHK_ERR(cd->scratch = xf_scratch_mem_init(core), -ENOMEM);
+
+    /* ...okay... it's all good */
+    TRACE(INIT, _b("core-%u initialized"), core);
+    
+    return 0;
+}
+
+/* ...core executive loop function */
+void xf_core_service(u32 core)
+{
+    xf_core_data_t *cd = &xf_core_data[core];
+    u32             status;
+    xf_message_t   *m;
+    xf_task_t      *t;
+
+#ifdef XAF_PROFILE_DSP
+    START_TIME_XA_PROFILER(prof);
+#endif
+    do
+    {           
+        /* ...clear local status change */
+        status = 0;
+
+        /* ...if core is servicing shared memory with AP, do it first - actually, they all need to support it */
+        if (xf_shmem_enabled(core))
+        {
+            /* ...process all commands */
+            xf_shmem_process_queues(core);
+        }
+
+        /* ...check if we have a backlog message placed into interim queue */
+        while ((m = xf_msg_local_ipc_get(core)) || (m = xf_msg_local_get(core)))
+        {
+            /* ...dispatch message execution */
+            xf_core_dispatch(cd, core, m);
+
+            /* ...set local status change */
+            status = 1;
+        }
+
+        /* ...check if we have pending responses (submitted from ISR) we need to process */
+        while ((m = xf_msg_local_response_get(core)) != NULL)
+        {
+            /* ...call completion handler on current stack */
+            xf_msg_complete(m);
+
+            /* ...set local status change */
+            status = 1;
+
+        }
+            
+        /* ...if scheduler queue is empty, break the loop and pause the core */
+        if ((t = xf_sched_get(&cd->sched)) != NULL)
+        {
+            /* ...data-processing execution (ignore internal errors) */
+            xf_core_process((xf_component_t *)t);
+
+            /* ...set local status change */
+            status = 1;
+        }
+    }
+    while (status);
+
+#ifdef XAF_PROFILE_DSP
+    STOP_TIME_XA_PROFILER(prof);
+      
+    if(prof.g_output_bytes)
+    {
+      unsigned long output_samples = prof.g_output_bytes;
+      output_samples >>= (prof.channels == 2 ? 1 : 0);
+      output_samples >>= (prof.pcm_width == 24 ? 2 : 1);
+      
+      COMPUTE_MHZ_XA_PROFILER(prof, output_samples, prof.sample_rate, 0);
+
+      prof.g_output_bytes = prof.cycles = 0; /* reset counters */
+    }
+#endif
+
+}
+
+/* ...global data initialization function */
+int xf_global_init(void)
+{
+    /* ...what global data we have to initialize? - tbd */
+    TRACE(INIT, _b("Global data initialized"));
+    
+    return 0;
+}
diff --git a/hifi/xaf/hifi-dpf/core/xf-io.c b/hifi/xaf/hifi-dpf/core/xf-io.c
new file mode 100644
index 0000000..09f8e3e
--- /dev/null
+++ b/hifi/xaf/hifi-dpf/core/xf-io.c
@@ -0,0 +1,644 @@
+/*******************************************************************************
+* Copyright (C) 2018 Cadence Design Systems, Inc.
+* 
+* Permission is hereby granted, free of charge, to any person obtaining
+* a copy of this software and associated documentation files (the
+* "Software"), to use this Software with Cadence processor cores only and 
+* not with any other processors and platforms, subject to
+* the following conditions:
+* 
+* The above copyright notice and this permission notice shall be included
+* in all copies or substantial portions of the Software.
+* 
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+******************************************************************************/
+
+/*******************************************************************************
+ * xf-io.c
+ *
+ * Generic input/output ports handling
+ *
+ ******************************************************************************/
+
+#define MODULE_TAG                      IO
+
+/*******************************************************************************
+ * Includes
+ ******************************************************************************/
+
+#include "xf.h"
+
+/*******************************************************************************
+ * Tracing configuration
+ ******************************************************************************/
+
+TRACE_TAG(INIT, 1);
+TRACE_TAG(INPUT, 1);
+TRACE_TAG(OUTPUT, 1);
+TRACE_TAG(ROUTE, 1);
+
+/*******************************************************************************
+ * Input port API
+ ******************************************************************************/
+
+/* ...initialize input port structure */
+int xf_input_port_init(xf_input_port_t *port, u32 size, u32 align, u32 core)
+{
+    /* ...allocate local internal buffer of particular size and alignment */
+    if (size)
+    {
+        /* ...internal buffer is used */
+        XF_CHK_ERR(port->buffer = xf_mem_alloc(size, align, core, 0), -ENOMEM);
+    }
+    else
+    {
+        /* ...no internal buffering is used */
+        port->buffer = NULL;
+    }
+    
+    /* ...initialize message queue */
+    xf_msg_queue_init(&port->queue);
+    
+    /* ...set buffer size */
+    port->length = size;
+    
+    /* ...enable input by default */
+    port->flags = XF_INPUT_FLAG_ENABLED | XF_INPUT_FLAG_CREATED;
+
+    /* ...mark buffer is empty */
+    port->filled = 0, port->access = NULL;
+    
+    TRACE(INIT, _b("input-port[%p] created - %p@%u[%u]"), port, port->buffer, align, size);
+
+    return 0;
+}
+
+/* ...put message into input port queue; return non-zero if queue was empty */
+int xf_input_port_put(xf_input_port_t *port, xf_message_t *m)
+{
+    /* ...check if input is enabled */
+    if ((port->flags & XF_INPUT_FLAG_ENABLED) == 0)
+    {
+        /* ...input disabled; this is an error condition, likely */
+        TRACE(INPUT, _b("input-port[%p] disabled"), port);
+        
+        /* ...release the message instantly */
+        xf_response_ok(m);
+
+        /* ...buffer has not been accepted - no actions to take */
+        return 0;
+    }
+    else if (m->length == 0)
+    {
+        /* ...it is forbidden to pass more than one zero-length message */
+        BUG(port->flags & XF_INPUT_FLAG_EOS, _x("invalid state: %x"), port->flags);
+
+        /* ...received a message with zero-length; mark end-of-stream condition */
+        port->flags ^= XF_INPUT_FLAG_ENABLED | XF_INPUT_FLAG_EOS;
+
+        /* ...still enqueue that zero-length message; it will be processed afterwards */
+        TRACE(INPUT, _b("input-port[%p]: zero-length buffer received"), port);
+    }
+    else
+    {
+        TRACE(INPUT, _b("input-port[%p]: buffer received - %u bytes"), port, m->length);
+    }
+
+    /* ...enqueue message and set access pointer as needed */
+    if (xf_msg_enqueue(&port->queue, m))
+    {
+        /* ...first message put - set access pointer and length */
+        port->access = m->buffer, port->remaining = m->length;
+
+        /* ...if first message is empty, mark port is done */
+        (!port->access ? port->flags ^= XF_INPUT_FLAG_EOS | XF_INPUT_FLAG_DONE : 0);
+
+        /* ...return non-zero to indicate the first buffer is placed into port */
+        return 1;
+    }
+    else
+    {
+        /* ...subsequent message placed into buffer */
+        return 0;
+    }
+}
+
+/* ...internal helper - input message completion */
+static inline int xf_input_port_complete(xf_input_port_t *port)
+{
+    /* ...dequeue message from queue */
+    xf_message_t   *m = xf_msg_dequeue(&port->queue);
+
+    /* ...message cannot be NULL */
+    BUG(m == NULL, _x("invalid port state"));
+
+    /* ...complete current message (EMPTY-THIS-BUFFER always; no length adjustment) */
+    xf_response(m);
+
+    /* ...set up next head */
+    if ((m = xf_msg_queue_head(&port->queue)) != NULL)
+    {
+        /* ...set new access pointers */
+        port->access = m->buffer, port->remaining = m->length;
+
+        /* ...return indication that there is an input message */
+        return 1;
+    }
+    else
+    {
+        /* ...no more messages; reset access pointer */
+        port->access = NULL;
+
+        /* ...return indication that input port has no data available */
+        return 0;
+    }
+}
+
+/* ...fill-in required amount of data into input port buffer */
+int xf_input_port_fill(xf_input_port_t *port)
+{
+    u32     filled = port->filled;
+    u32     remaining = port->remaining;
+    u32     copied = 0;
+    s32     n;
+
+    /* ...function shall not be called if no internal buffering is used */
+    BUG(xf_input_port_bypass(port), _x("Invalid transaction"));
+
+    /* ...if there is no message pending, bail out */
+    if (!xf_msg_queue_head(&port->queue))
+    {
+        TRACE(INPUT, _b("No message ready"));
+        return 0;
+    }
+    
+    /* ...calculate total amount of bytes we need to copy */
+    n = (s32)(port->length - filled);
+    
+    /* ...get at most "n" bytes from input message(s) buffer(s) */
+    while (n > 0)
+    {
+        u32     k;
+        
+        /* ...determine the size of the chunk to copy */
+        ((k = remaining) > n ? k = n : 0);
+
+        /* ...process zero-length input message separately */
+        if (k == 0)
+        {
+            /* ...end-of-stream condition must be set */
+            BUG((port->flags & XF_INPUT_FLAG_EOS) == 0, _x("port[%p]: invalid state: %x"), port, port->flags);
+
+            /* ...mark stream is completed */
+            port->flags ^= XF_INPUT_FLAG_EOS | XF_INPUT_FLAG_DONE;
+
+            /* ...reset total amount of bytes to fill */
+            n = 0;
+
+            /* ...do not release message yet */
+            TRACE(INPUT, _b("input-port[%p] done"), port);
+            
+            /* ...and break the loop */
+            break;
+        }
+
+        /* ...buffer must be set */
+        BUG(!port->access, _x("invalid port state"));
+            
+        /* ...get required amount from input buffer */
+        memcpy(port->buffer + filled, port->access, k), port->access += k;
+        
+        /* ...advance buffer positions */
+        filled += k, copied += k, n -= k;
+        
+        /* ...check if input buffer is processed completely */
+        if ((remaining -= k) == 0)
+        {
+            if (!xf_input_port_complete(port))
+            {
+                /* ...no more input messages; break the loop */
+                break;
+            }
+            else
+            {
+                /* ...update remaining counter */
+                remaining = port->remaining;
+            }
+        }
+    }
+
+    /* ...update buffer positions */
+    port->filled = filled, port->remaining = remaining;
+    
+    /* ...return indicator whether input buffer is prefilled */
+    return (n == 0);
+}
+
+/* ...pad input buffer with given pattern */
+void xf_input_port_pad(xf_input_port_t *port, u8 pad)
+{
+    u32     filled = port->filled;
+    s32     k;
+    
+    /* ...do padding if port buffer is not filled */
+    if ((k = port->length - filled) > 0)
+    {
+        memset(port->buffer + filled, pad, k);
+
+        /* ...indicate port is filled */
+        port->filled = port->length;
+    }
+}
+
+/* ...consume input buffer data */
+void xf_input_port_consume(xf_input_port_t *port, u32 n)
+{
+    /* ...check whether input port is in bypass mode */
+    if (xf_input_port_bypass(port))
+    {
+        /* ...port is in bypass mode; advance access pointer */
+        if ((port->remaining -= n) == 0)
+        {
+            /* ...complete message and try to rearm input port */
+            xf_input_port_complete(port);
+
+            /* ...check if end-of-stream flag is set */
+            if (xf_msg_queue_head(&port->queue) && !port->access)
+            {
+                BUG((port->flags & XF_INPUT_FLAG_EOS) == 0, _x("port[%p]: invalid state: %x"), port, port->flags);
+
+                /* ...mark stream is completed */
+                port->flags ^= XF_INPUT_FLAG_EOS | XF_INPUT_FLAG_DONE;
+                
+                TRACE(INPUT, _b("input-port[%p] done"), port);
+            }
+        }
+        else
+        {
+            /* ...advance message buffer pointer */
+            port->access += n;
+        }
+    }
+    else if (port->filled > n)
+    {
+        u32     k = port->filled - n;
+        
+        /* ...move tail of buffer to the head (safe to use memcpy) */
+        memcpy(port->buffer, port->buffer + n, k);        
+
+        /* ...adjust filled position */
+        port->filled = k;
+    }
+    else
+    {
+        /* ...entire buffer is consumed; reset fill level */
+        port->filled = 0;
+    }
+}
+
+/* ...purge input port queue */
+void xf_input_port_purge(xf_input_port_t *port)
+{
+    xf_message_t   *m;
+
+    /* ...bail out early if port is not created */
+    if (!xf_input_port_created(port))   return;
+    
+    /* ...free all queued messages with generic "ok" response */
+    while ((m = xf_msg_dequeue(&port->queue)) != NULL)
+    {
+        xf_response_ok(m);
+    }
+
+    /* ...reset internal buffer position */
+    port->filled = 0, port->access = NULL;
+    
+    /* ...reset port flags */
+    port->flags = (port->flags & ~__XF_INPUT_FLAGS(~0)) | XF_INPUT_FLAG_ENABLED | XF_INPUT_FLAG_CREATED;
+    
+    TRACE(INPUT, _b("input-port[%p] purged"), port);
+}
+
+/* ...save flow-control message for propagated input port purging sequence */
+void xf_input_port_control_save(xf_input_port_t *port, xf_message_t *m)
+{
+    /* ...make sure purging sequence is not active */
+    BUG(port->flags & XF_INPUT_FLAG_PURGING, _x("invalid state: %x"), port->flags);
+
+    /* ...place message into internal queue */
+    xf_msg_enqueue(&port->queue, m);
+    
+    /* ...set port purging flag */
+    port->flags ^= XF_INPUT_FLAG_PURGING;
+
+    TRACE(INPUT, _b("port[%p] start purge sequence"), port);
+}
+
+/* ...mark flushing sequence is completed */
+void xf_input_port_purge_done(xf_input_port_t *port)
+{
+    /* ...make sure flushing sequence is ongoing */
+    BUG((port->flags & XF_INPUT_FLAG_PURGING) == 0, _x("invalid state: %x"), port->flags);
+
+    /* ...complete saved flow-control message */
+    xf_response_ok(xf_msg_dequeue(&port->queue));
+    
+    /* ...clear port purging flag */
+    port->flags ^= XF_INPUT_FLAG_PURGING;
+
+    TRACE(INPUT, _b("port[%p] purge sequence completed"), port);
+}
+
+/* ...destroy input port data */
+void xf_input_port_destroy(xf_input_port_t *port, u32 core)
+{
+    /* ...bail out earlier if port is not created */
+    if (!xf_input_port_created(port))   return;
+    
+    /* ...deallocate input buffer if needed */
+    (port->buffer ? xf_mem_free(port->buffer, port->length, core, 0), port->buffer = NULL : 0);
+
+    /* ...reset input port flags */
+    port->flags = 0;
+    
+    TRACE(INIT, _b("input-port[%p] destroyed"), port);
+}
+
+/*******************************************************************************
+ * Output port API
+ ******************************************************************************/
+
+/* ...initialize output port (structure must be zero-initialized) */
+int xf_output_port_init(xf_output_port_t *port, u32 size)
+{
+    /*  ...initialize message queue */
+    xf_msg_queue_init(&port->queue);
+    
+    /* ...set output buffer length */
+    port->length = size;
+
+    /* ...mark port is created */
+    port->flags = XF_OUTPUT_FLAG_CREATED;
+
+    TRACE(INIT, _b("output-port[%p] initialized"), port);
+
+    return 0;
+}
+
+/* ...route output port */
+int xf_output_port_route(xf_output_port_t *port, u32 id, u32 n, u32 length, u32 align)
+{
+    u32             core = XF_MSG_DST_CORE(id);
+    u32             shared = XF_MSG_SHARED(id);
+    xf_message_t   *m;
+    u32             i;
+    
+    /* ...allocate message pool for a port; extra message for control */
+    XF_CHK_API(xf_msg_pool_init(&port->pool, n + 1, core));
+
+    /* ...allocate required amount of buffers */
+    for (i = 1; i <= n; i++)
+    {
+        /* ...get message from pool (directly; bypass that "get" interface) */
+        m = xf_msg_pool_item(&port->pool, i);
+
+        /* ...wipe out message link pointer (debugging) */
+        m->next = NULL;
+        
+        /* ...set message parameters */
+        m->id = id;
+        m->opcode = XF_FILL_THIS_BUFFER;
+        m->length = length;
+        m->buffer = xf_mem_alloc(length, align, core, shared);
+
+        /* ...if allocation failed, do a cleanup */
+        if (!m->buffer)     goto error;
+
+        /* ...place message into output port */
+        xf_msg_enqueue(&port->queue, m);
+    }
+
+    /* ...setup flow-control message */
+    m = xf_output_port_control_msg(port);
+    m->id = id;
+    m->length = 0;
+    m->buffer = NULL;
+
+    /* ...wipe out message link pointer (debugging) */
+    m->next = NULL;
+    
+    /* ...save port length */
+    port->length = length;
+
+    /* ...mark port is routed */
+    port->flags |= XF_OUTPUT_FLAG_ROUTED | XF_OUTPUT_FLAG_IDLE;
+
+    TRACE(ROUTE, _b("output-port[%p] routed: %x -> %x"), port, XF_MSG_DST(id), XF_MSG_SRC(id));
+
+    return 0;
+
+error:
+    /* ...allocation failed; do a cleanup */
+    while (--i)
+    {
+        m = xf_msg_pool_item(&port->pool, i);
+
+        /* ...free item */
+        xf_mem_free(m->buffer, length, core, shared);
+    }
+
+    /* ...destroy pool data */
+    xf_msg_pool_destroy(&port->pool, core);
+    
+    return -ENOMEM;
+}
+
+/* ...start output port unrouting sequence */
+void xf_output_port_unroute_start(xf_output_port_t *port, xf_message_t *m)
+{
+    /* ...port must be routed */
+    BUG(!xf_output_port_routed(port), _x("invalid state: %x"), port->flags);
+
+    /* ...save message in the queue */
+    port->unroute = m;
+    
+    /* ...put port unrouting flag */
+    port->flags |= XF_OUTPUT_FLAG_UNROUTING;
+}
+
+/* ...complete port unrouting sequence */
+void xf_output_port_unroute_done(xf_output_port_t *port)
+{
+    xf_message_t   *m;
+    
+    /* ...make sure we have an outstanding port unrouting sequence */
+    BUG(!xf_output_port_unrouting(port), _x("invalid state: %x"), port->flags);
+
+    /* ...retrieve enqueued control-flow message */
+    m = port->unroute, port->unroute = NULL;
+    
+    /* ...destroy port buffers */
+    xf_output_port_unroute(port);
+    
+    /* ...and pass response to the caller */
+    xf_response_ok(m);
+}
+
+/* ...unroute output port and destroy all memory buffers allocated */
+void xf_output_port_unroute(xf_output_port_t *port)
+{
+    xf_message_t   *m = xf_output_port_control_msg(port);
+    u32             core = XF_MSG_DST_CORE(m->id);
+    u32             shared = XF_MSG_SHARED(m->id);   
+    u32             n = port->pool.n - 1;
+    u32             i;
+    
+    /* ...free all messages (we are running on "dst" core) */
+    for (i = 1; i <= n; i++)
+    {
+        /* ...directly obtain message item */
+        m = xf_msg_pool_item(&port->pool, i);
+
+        /* ...free message buffer (must exist) */
+        xf_mem_free(m->buffer, port->length, core, shared);
+    }
+
+    /* ...destroy pool data */
+    xf_msg_pool_destroy(&port->pool, core);
+
+    /* ...reset all flags */
+    port->flags = XF_OUTPUT_FLAG_CREATED;
+
+    /* ...reset message queue (it is empty again) */
+    xf_msg_queue_init(&port->queue);
+
+    TRACE(ROUTE, _b("output-port[%p] unrouted"), port);
+}
+
+/* ...put next message to the port */
+int xf_output_port_put(xf_output_port_t *port, xf_message_t *m)
+{
+    /* ...in case of port unrouting sequence the flag returned will always be 0 */
+    return xf_msg_enqueue(&port->queue, m);
+}
+
+/* ...retrieve next message from the port */
+void * xf_output_port_data(xf_output_port_t *port)
+{
+    xf_message_t   *m = xf_msg_queue_head(&port->queue);
+
+    /* ...bail out if there is nothing enqueued */
+    if (m == NULL)      return NULL;
+
+    /* ...it is not permitted to access port data when port is being unrouted */
+    BUG(xf_output_port_unrouting(port), _x("invalid transaction"));
+
+    /* ...make sure message length is valid */
+    BUG(m->length < port->length, _x("Insufficient buffer length: %u < %u"), m->length, port->length);
+        
+    /* ...return access buffer pointer */
+    return m->buffer;
+}
+
+/* ...produce output message marking amount of bytes produced */
+int xf_output_port_produce(xf_output_port_t *port, u32 n)
+{
+    xf_message_t   *m = xf_msg_dequeue(&port->queue);
+    
+    /* ...message cannot be NULL */
+    BUG(m == NULL, _x("Invalid transaction"));
+
+    /* ...it is not permitted to invoke this when port is being unrouted (or flushed - tbd) */
+    BUG(xf_output_port_unrouting(port), _x("invalid transaction"));
+
+    /* ...complete message with specified amount of bytes produced */
+    xf_response_data(m, n);
+
+    /* ...clear port idle flag (technically, not needed for unrouted port) */
+    port->flags &= ~XF_OUTPUT_FLAG_IDLE;
+    
+    /* ...return indication of pending message availability */
+    return (xf_msg_queue_head(&port->queue) != NULL);
+}
+
+/* ...flush output port */
+int xf_output_port_flush(xf_output_port_t *port, u32 opcode)
+{
+    xf_message_t   *m;
+
+    /* ...if port is routed, we shall pass flush command to sink port */
+    if (xf_output_port_routed(port))
+    {
+        /* ...if port is idle, satisfy immediately */
+        if (port->flags & XF_OUTPUT_FLAG_IDLE)     return 1;
+        
+        /* ...start flushing sequence if not already started */
+        if ((port->flags & XF_OUTPUT_FLAG_FLUSHING) == 0)
+        {
+            /* ...put flushing flag */
+            port->flags ^= XF_OUTPUT_FLAG_FLUSHING;
+
+            /* ...get control message from associated pool */
+            m = xf_output_port_control_msg(port);
+
+            /* ...set flow-control operation */
+            m->opcode = opcode;
+        
+            /* ...message is a command, but source and destination are swapped */
+            xf_response(m);
+        }
+        
+        /* ...zero-result indicates the flushing is in progress */
+        return 0;
+    }
+    else
+    {
+        /* ...for non-routed port just complete all queued messages */
+        while ((m = xf_msg_dequeue(&port->queue)) != NULL)
+        {
+            /* ...pass generic zero-length "okay" response - tbd */
+            xf_response_ok(m);
+        }
+
+        /* ...non-zero result indicates the flushing is done */
+        return 1;
+    }
+}
+
+/* ...mark flushing sequence is completed */
+void xf_output_port_flush_done(xf_output_port_t *port)
+{
+    /* ...make sure flushing sequence is ongoing */
+    BUG((port->flags & XF_OUTPUT_FLAG_FLUSHING) == 0, _x("invalid state: %x"), port->flags);
+    
+    /* ...clear flushing flag and set idle flag */
+    port->flags ^= XF_OUTPUT_FLAG_IDLE | XF_OUTPUT_FLAG_FLUSHING;
+
+    TRACE(OUTPUT, _b("port[%p] flush sequence completed"), port);
+}
+
+/* ...destroy output port */
+void xf_output_port_destroy(xf_output_port_t *port, u32 core)
+{
+    /* ...check if port is routed */
+    if (xf_output_port_routed(port))
+    {
+        /* ...port must be in idle state */
+        BUG(!xf_output_port_idle(port), _x("destroying non-idle port[%p]"), port);
+
+        /* ...unroute port */
+        xf_output_port_unroute(port);
+    }
+
+    /* ...reset port flags */
+    port->flags = 0;
+
+    TRACE(INIT, _b("output-port[%p] destroyed"), port);
+}
diff --git a/hifi/xaf/hifi-dpf/core/xf-isr.c b/hifi/xaf/hifi-dpf/core/xf-isr.c
new file mode 100644
index 0000000..4e2add1
--- /dev/null
+++ b/hifi/xaf/hifi-dpf/core/xf-isr.c
@@ -0,0 +1,68 @@
+/*******************************************************************************
+* Copyright (C) 2018 Cadence Design Systems, Inc.
+* 
+* Permission is hereby granted, free of charge, to any person obtaining
+* a copy of this software and associated documentation files (the
+* "Software"), to use this Software with Cadence processor cores only and 
+* not with any other processors and platforms, subject to
+* the following conditions:
+* 
+* The above copyright notice and this permission notice shall be included
+* in all copies or substantial portions of the Software.
+* 
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+******************************************************************************/
+
+/*******************************************************************************
+ * xf-isr.c
+ *
+ * DSP processing framework - code running from interrupt context
+ *
+ ******************************************************************************/
+
+#define MODULE_TAG                      ISR
+
+/*******************************************************************************
+ * Includes
+ ******************************************************************************/
+
+#include "xf.h"
+
+/*******************************************************************************
+ * API functions definitions
+ ******************************************************************************/
+
+/* ...submit command message from interrupt context on local core */
+void xf_msg_schedule_isr(xf_message_t *m)
+{
+    u32                 core = XF_MSG_DST_CORE(m->id);
+    xf_core_data_t     *cd = XF_CORE_DATA(core);
+    
+    /* ...interrupt masking protocol is used for protecting local message queue */
+    if (xf_msg_enqueue(&cd->queue, m))
+    {
+        /* ...resume local scheduler if that is the first message */
+        xf_ipi_resume(core);
+    }
+}
+
+/* ...complete message from interrupt handler */
+void xf_msg_complete_isr(xf_message_t *m)
+{
+    u32                 core = XF_MSG_DST_CORE(m->id);
+    xf_core_data_t     *cd = XF_CORE_DATA(core);
+
+    /* ...place message into response queue */
+    if (xf_msg_enqueue(&cd->response, m))
+    {
+        /* ...notify local scheduler if that is the first message */
+        xf_ipi_resume(core);
+    }
+}
diff --git a/hifi/xaf/hifi-dpf/core/xf-mem.c b/hifi/xaf/hifi-dpf/core/xf-mem.c
new file mode 100644
index 0000000..ce5d8a6
--- /dev/null
+++ b/hifi/xaf/hifi-dpf/core/xf-mem.c
@@ -0,0 +1,361 @@
+/*******************************************************************************
+* Copyright (C) 2018 Cadence Design Systems, Inc.
+* 
+* Permission is hereby granted, free of charge, to any person obtaining
+* a copy of this software and associated documentation files (the
+* "Software"), to use this Software with Cadence processor cores only and 
+* not with any other processors and platforms, subject to
+* the following conditions:
+* 
+* The above copyright notice and this permission notice shall be included
+* in all copies or substantial portions of the Software.
+* 
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+******************************************************************************/
+
+/*******************************************************************************
+ * xf-mem.c
+ *
+ * Dynamic memory allocator implementation (based on rb-tree index)
+ *
+ ******************************************************************************/
+
+#define MODULE_TAG                      MM
+
+/*******************************************************************************
+ * Includes
+ ******************************************************************************/
+
+#include "xf.h"
+
+/*******************************************************************************
+ * Tracing configuration
+ ******************************************************************************/
+
+TRACE_TAG(INIT, 1);
+
+/*******************************************************************************
+ * Internal helpers
+ ******************************************************************************/
+
+/* ...initialize block */
+static inline xf_mm_block_t * xf_mm_block_init(void *addr, u32 size)
+{
+    xf_mm_block_t  *b = (xf_mm_block_t *)addr;
+    
+    /* ...use 31 available bits of node color to keep aligned size */
+    return b->l_node.color = size, b;
+}
+
+/* ...check if the length of the block is less than given */
+static inline int xf_mm_block_length_less(xf_mm_block_t *b, u32 size)
+{
+    /* ...we don't really care about LSB of color */
+    return (b->l_node.color < size);
+}
+
+/* ...return exact block length */
+static inline u32 xf_mm_block_length(xf_mm_block_t *b)
+{
+    /* ...wipe out least-significant bit from node color */
+    return (b->l_node.color & ~1);
+}
+
+/* ...increase block length */
+static inline u32 xf_mm_block_length_add(xf_mm_block_t *b, u32 size)
+{
+    /* ...return exact block length after increase */
+    return ((b->l_node.color += size) & ~1);
+}
+
+/* ...decrease block length */
+static inline u32 xf_mm_block_length_sub(xf_mm_block_t *b, u32 size)
+{
+    /* ...return exact block length after decrease */
+    return ((b->l_node.color -= size) & ~1);
+}
+
+/*******************************************************************************
+ * Internal functions
+ ******************************************************************************/
+
+/* ...find best-match node given requested size */
+static inline  xf_mm_block_t * xf_mm_find_by_size(xf_mm_pool_t *pool, u32 size)
+{
+    rb_tree_t *tree = &pool->l_map;
+    rb_idx_t   p_idx, t_idx;
+    
+    /* ...find first block having length greater than requested */
+    for (p_idx = rb_root(tree); p_idx != rb_null(tree); p_idx = rb_right(tree, p_idx))
+    {
+        xf_mm_block_t  *b = container_of(p_idx, xf_mm_block_t, l_node);
+        
+        /* ...break upon finding first matching candidate */
+        if (!xf_mm_block_length_less(b, size))
+            break;
+    }
+
+    /* ...bail out if haven't found a block with sufficient size */
+    if (p_idx == rb_null(tree))
+        return NULL;
+
+    /* ...try to find better match in left subtree */
+    for (t_idx = rb_left(tree, p_idx); t_idx != rb_null(tree); )
+    {
+        xf_mm_block_t  *b = container_of(t_idx, xf_mm_block_t, l_node);
+
+        /* ...check the size of the block */
+        if (!xf_mm_block_length_less(b, size))
+        {
+            /* ...update best match */
+            p_idx = t_idx;
+
+            /* ...and check if we have anything better in left sbtree */
+            t_idx = rb_left(tree, t_idx);
+        }
+        else
+        {
+            /* ...move towards higher block sizes in that subtree */
+            t_idx = rb_right(tree, t_idx);
+        }
+    }
+
+    /* ...p_idx is our best choice */
+    return container_of(p_idx, xf_mm_block_t, l_node);
+}
+
+/* ...find the neighbours of the block basing on its address */
+static void xf_mm_find_by_addr(xf_mm_pool_t *pool, void *addr, xf_mm_block_t **n)
+{
+    rb_tree_t  *tree = &pool->a_map;
+    rb_idx_t    p_idx, l_idx, r_idx;
+
+    /* ...it is not possible to have exact match in this map */
+    for (p_idx = rb_root(tree), l_idx = r_idx = NULL; p_idx != rb_null(tree); )
+    {
+        /* ...only "is less than" comparison is valid (as "a_node" pointer is biased) */
+        if ((u32)p_idx < (u32)addr)
+        {
+            /* ...update lower neighbour */
+            l_idx = p_idx;
+            
+            /* ...and move towards higher addresses */
+            p_idx = rb_right(tree, p_idx);
+        }
+        else
+        {
+            /* ...update higher neighbour */
+            r_idx = p_idx;
+            
+            /* ...and move towards lower addresses */
+            p_idx = rb_left(tree, p_idx);
+        }
+    }
+
+    /* ...translate nodes into blocks */
+    n[0] = (l_idx ? container_of(l_idx, xf_mm_block_t, a_node) : NULL);
+    n[1] = (r_idx ? container_of(r_idx, xf_mm_block_t, a_node) : NULL);
+}
+
+/* ...insert the block into L-map */
+static void xf_mm_insert_size(xf_mm_pool_t *pool, xf_mm_block_t *b, u32 size)
+{
+    rb_tree_t  *tree = &pool->l_map;
+    rb_idx_t    p_idx, t_idx;
+    
+    /* ...find the parent node for the next block */
+    for (p_idx = rb_root(tree); p_idx != rb_null(tree); p_idx = t_idx)
+    {
+        /* ...check for the size */
+        if (xf_mm_block_length_less(container_of(p_idx, xf_mm_block_t, l_node), size))
+        {
+            /* ...move towards higher addresses */
+            if ((t_idx = rb_right(tree, p_idx)) == rb_null(tree))
+            {
+                /* ...node becomes a right child of parent p */
+                rb_set_right(tree, p_idx, &b->l_node);
+                break;
+            }
+        }
+        else
+        {
+            /* ...move towards lower addresses (ok if exact size match is found) */
+            if ((t_idx = rb_left(tree, p_idx)) == rb_null(tree))
+            {
+                /* ...node becomes a left child of parent p */
+                rb_set_left(tree, p_idx, &b->l_node);
+                break;
+            }
+        }
+    }
+
+    /* ...insert node into tree */
+    rb_insert(tree, &b->l_node, p_idx);
+}
+
+/* ...insert the block into A-map */
+static void xf_mm_insert_addr(xf_mm_pool_t *pool, xf_mm_block_t *b)
+{
+    rb_tree_t  *tree = &pool->a_map;
+    rb_idx_t    p_idx, t_idx;
+    
+    /* ...find the parent node for the next block */
+    for (p_idx = rb_root(tree); p_idx != rb_null(tree); p_idx = t_idx)
+    {
+        /* ...check for the address (only "is less than" comparison is valid) */
+        if ((u32)p_idx < (u32)b)
+        {
+            /* ...move towards higher addresses */
+            if ((t_idx = rb_right(tree, p_idx)) == rb_null(tree))
+            {
+                /* ...node becomes a right child of parent p */
+                rb_set_right(tree, p_idx, &b->a_node);
+                break;
+            }
+        }
+        else
+        {
+            /* ...move towards lower addresses (by design there cannot be exact match) */
+            if ((t_idx = rb_left(tree, p_idx)) == rb_null(tree))
+            {
+                /* ...node becomes a left child of parent p */
+                rb_set_left(tree, p_idx, &b->a_node);
+                break;
+            }
+        }
+    }
+
+    /* ...insert node into tree */
+    rb_insert(tree, &b->a_node, p_idx);
+}
+
+/*******************************************************************************
+ * Entry points
+ ******************************************************************************/
+
+/* ...block allocation */
+void * xf_mm_alloc(xf_mm_pool_t *pool, u32 size)
+{
+    xf_mm_block_t  *b;
+    
+    /* ...find best-fit free block */
+    XF_CHK_ERR(b = xf_mm_find_by_size(pool, size), NULL);
+    
+    /* ...remove the block from the L-map */
+    rb_delete(&pool->l_map, &b->l_node);
+    
+    /* ...check if the size is exactly the same as requested */
+    if ((size = xf_mm_block_length_sub(b, size)) == 0)
+    {
+        /* ...the block needs to be removed from the A-map as well */
+        rb_delete(&pool->a_map, &b->a_node);
+
+        /* ...entire block goes to user */
+        return (void *) b;
+    }
+    else
+    {
+        /* ...insert the block into L-map */
+        xf_mm_insert_size(pool, b, size);
+        
+        /* ...A-map remains intact; tail of the block goes to user */
+        return (void *) b + size;
+    }
+}
+
+/* ...block deallocation */
+void xf_mm_free(xf_mm_pool_t *pool, void *addr, u32 size)
+{
+    xf_mm_block_t  *b = xf_mm_block_init(addr, size);
+    xf_mm_block_t  *n[2];
+    
+    /* ...find block neighbours in A-map */
+    xf_mm_find_by_addr(pool, addr, n);
+
+    /* ...check if we can merge block to left neighbour */
+    if (n[0])
+    {
+        if ((void *)n[0] + xf_mm_block_length(n[0]) == addr)
+        {
+            /* ...merge free block with left neighbour; delete it from L-map */
+            rb_delete(&pool->l_map, &n[0]->l_node);
+        
+            /* ...adjust block length (block remains in A-map) */
+            addr = (void *)(b = n[0]), size = xf_mm_block_length_add(b, size);
+        }
+        else
+        {
+            /* ...mark there is no left-merge */
+            n[0] = NULL;
+        }
+    }
+    
+    /* ...check if we can merge block to right neighbour */
+    if (n[1])
+    {
+        if ((void *)n[1] == addr + size)
+        {
+            /* ...merge free block with right neighbour; delete it from L-map */
+            rb_delete(&pool->l_map, &n[1]->l_node);
+        
+            /* ...adjust block length */
+            size = xf_mm_block_length_add(b, xf_mm_block_length(n[1]));
+
+            /* ...check if left merge took place as well */
+            if (n[0])
+            {
+                /* ...left neighbour covers now all three blocks; drop record from A-map */
+                rb_delete(&pool->a_map, &n[1]->a_node);
+            }
+            else
+            {
+                /* ...fixup tree pointers (equivalent to remove/reinsert the same key) */
+                rb_replace(&pool->a_map, &n[1]->a_node, &b->a_node);
+            }
+        }
+        else
+        {
+            n[1] = NULL;
+        }
+    }
+
+    /* ...if any merge has occured, A-map is updated */
+    if (n[0] == NULL && n[1] == NULL)
+    {
+        /* ...add new block into A-map */
+        xf_mm_insert_addr(pool, b);
+    }
+    
+    /* ...add (new or adjusted) block into L-map */
+    xf_mm_insert_size(pool, b, size);
+}
+
+/* ...initialize memory allocator */
+int xf_mm_init(xf_mm_pool_t *pool, void *addr, u32 size)
+{
+    /* ...check pool alignment validity */
+    XF_CHK_ERR(((u32)addr & (sizeof(xf_mm_block_t) - 1)) == 0, -EINVAL);
+
+    /* ...check pool size validity */
+    XF_CHK_ERR(((size) & (sizeof(xf_mm_block_t) - 1)) == 0, -EINVAL);
+    
+    /* ...set pool parameters (need that stuff at all? - tbd) */    
+    pool->addr = addr, pool->size = size;
+
+    /* ...initialize rb-trees */
+    rb_init(&pool->l_map), rb_init(&pool->a_map);
+
+    /* ..."free" the entire block */
+    xf_mm_free(pool, addr, size);
+
+    TRACE(INIT, _b("memory allocator initialized: [%p..%p)"), addr, addr + size);
+    
+    return 0;
+}
diff --git a/hifi/xaf/hifi-dpf/core/xf-msg.c b/hifi/xaf/hifi-dpf/core/xf-msg.c
new file mode 100644
index 0000000..4253e1e
--- /dev/null
+++ b/hifi/xaf/hifi-dpf/core/xf-msg.c
@@ -0,0 +1,107 @@
+/*******************************************************************************
+* Copyright (C) 2018 Cadence Design Systems, Inc.
+* 
+* Permission is hereby granted, free of charge, to any person obtaining
+* a copy of this software and associated documentation files (the
+* "Software"), to use this Software with Cadence processor cores only and 
+* not with any other processors and platforms, subject to
+* the following conditions:
+* 
+* The above copyright notice and this permission notice shall be included
+* in all copies or substantial portions of the Software.
+* 
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+******************************************************************************/
+
+/*******************************************************************************
+ * xf-msg.c
+ *
+ * Message/message pool handling
+ *
+ ******************************************************************************/
+
+#define MODULE_TAG                      MSG
+
+/*******************************************************************************
+ * Includes
+ ******************************************************************************/
+
+#include "xf.h"
+
+/*******************************************************************************
+ * Entry points
+ ******************************************************************************/
+
+/* ...allocate message pool */
+int xf_msg_pool_init(xf_msg_pool_t *pool, u32 n, u32 core)
+{   
+    u32     i;
+    
+    /* ...allocate shared memory from global pool */
+    XF_CHK_ERR(pool->p = xf_mem_alloc(XF_MM(sizeof(*pool->p) * n), XF_PROXY_ALIGNMENT, core, 1), -ENOMEM);
+    
+    /* ...place all messages into single-liked list */
+    for (pool->head = &pool->p[i = 0]; i < n - 1; i++)
+    {
+        /* ...set message pointer to next message in the pool */
+        xf_msg_pool_item(pool, i)->next = xf_msg_pool_item(pool, i + 1);
+    }
+    
+    /* ...set tail of the list */
+    xf_msg_pool_item(pool, i)->next = NULL;
+
+    /* ...save pool size */
+    pool->n = n;
+    
+    return 0;
+}
+
+/* ...destroy memory pool */
+void xf_msg_pool_destroy(xf_msg_pool_t *pool, u32 core)
+{
+    /* ...release pool memory (from shared local-IPC memory) */
+    xf_mem_free(pool->p, XF_MM(sizeof(*pool->p) * pool->n), core, 1);
+}
+
+/* ...allocate message from a pool (no concurrent access from other cores) */
+xf_message_t * xf_msg_pool_get(xf_msg_pool_t *pool)
+{
+    __xf_message_t  *_m;
+    
+    /* ...pop message from the head of the pool */
+    XF_CHK_ERR(_m = pool->head, NULL);
+    
+    /* ...advance list head */
+    pool->head = (__xf_message_t *)(((xf_message_t *) _m)->next);
+
+    /* ...debug - wipe out message "next" pointer */
+    ((xf_message_t *) _m)->next = NULL;
+    
+    /* ...return properly aligned message pointer */
+    return (xf_message_t *) _m;
+}
+
+/* ...return message back to the pool (no concurrent access from other cores) */
+void xf_msg_pool_put(xf_msg_pool_t *pool, xf_message_t *m)
+{
+    __xf_message_t  *_m = (__xf_message_t *) m;
+    
+    /* ...make sure the message is properly aligned object */
+    BUG(!XF_IS_ALIGNED(_m), _x("Corrupted message pointer: %p"), _m);
+    
+    /* ...make sure it is returned to the same pool (need a length for that - tbd) */
+    BUG(!xf_msg_from_pool(pool, m) < 0, _x("Bad pool/message: %p/%p"), pool->p, _m);
+
+    /* ...place message into the head */
+    m->next = (xf_message_t *) pool->head;
+    
+    /* ...advance pool head */
+    pool->head = _m;
+}
diff --git a/hifi/xaf/hifi-dpf/core/xf-sched.c b/hifi/xaf/hifi-dpf/core/xf-sched.c
new file mode 100644
index 0000000..cc1b4e8
--- /dev/null
+++ b/hifi/xaf/hifi-dpf/core/xf-sched.c
@@ -0,0 +1,153 @@
+/*******************************************************************************
+* Copyright (C) 2018 Cadence Design Systems, Inc.
+* 
+* Permission is hereby granted, free of charge, to any person obtaining
+* a copy of this software and associated documentation files (the
+* "Software"), to use this Software with Cadence processor cores only and 
+* not with any other processors and platforms, subject to
+* the following conditions:
+* 
+* The above copyright notice and this permission notice shall be included
+* in all copies or substantial portions of the Software.
+* 
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+******************************************************************************/
+
+/*******************************************************************************
+ * xf-sched.c
+ *
+ * Non-preemptive earliest-deadline-first scheduler
+ *
+ ******************************************************************************/
+
+#define MODULE_TAG                      SCHED
+
+/*******************************************************************************
+ * Includes
+ ******************************************************************************/
+
+#include "xf.h"
+
+/*******************************************************************************
+ * Tracing configuration
+ ******************************************************************************/
+
+TRACE_TAG(DEBUG, 1);
+
+/*******************************************************************************
+ * Global functions definitions
+ ******************************************************************************/
+
+/* ...place task into scheduler queue */
+void xf_sched_put(xf_sched_t *sched, xf_task_t *t, u32 ts)
+{
+    rb_tree_t  *tree = (rb_tree_t *)sched;
+    rb_node_t  *node = (rb_node_t *)t;
+    rb_idx_t    p_idx, t_idx;
+    u32         _ts;
+
+    /* ...set scheduling timestamp */
+    xf_task_timestamp_set(t, ts);
+    
+    /* ...find a place in the tree where the message should be inserted */
+    for (p_idx = rb_root(tree); p_idx != rb_null(tree); p_idx = t_idx)
+    {
+        /* ...get timestamp of the p_idx */
+        _ts = xf_task_timestamp((xf_task_t *)p_idx);
+
+        /* ...ordering respects FIFO order of messages with same timestamp */
+        if (xf_timestamp_before(ts, _ts))
+        {
+            if ((t_idx = rb_left(tree, p_idx)) == rb_null(tree))
+            {
+                /* ...p_idx is a direct successor of the message */
+                rb_set_left(tree, p_idx, node);
+
+                /* ...adjust head of the tree if needed */
+                if (p_idx == rb_cache(tree))    goto insert_head;
+                else                            goto insert;
+            }
+        }
+        else
+        {
+            if ((t_idx = rb_right(tree, p_idx)) == rb_null(tree))
+            {
+                /* ...p_idx is a direct predeccessor of the message */
+                rb_set_right(tree, p_idx, node);
+
+                goto insert;
+            }
+        }        
+    }
+
+insert_head:
+    /* ...adjust scheduler head element */
+    rb_set_cache(tree, node);
+
+insert:    
+    /* ...insert item and rebalance the tree */
+    rb_insert(tree, node, p_idx);
+
+    /* ...head cannot be NULL */
+    BUG(rb_cache(tree) == rb_null(tree), _x("Invalid scheduler state"));
+    
+    TRACE(DEBUG, _b("in:  %x:[%p] (ts:%x)"), ts, node, xf_sched_timestamp(sched));
+}
+
+/* ...get first item from the scheduler */
+xf_task_t * xf_sched_get(xf_sched_t *sched)
+{
+    rb_tree_t      *tree = (rb_tree_t *)sched;
+    rb_idx_t        n_idx, t_idx;
+    u32             ts;
+    
+    /* ...head of the tree is cached; replace it with its parent (direct successor) */
+    if ((n_idx = rb_cache(tree)) == rb_null(tree))
+    {
+        /* ...tree is empty; bail out */
+        return NULL;
+    }
+    else
+    {
+        /* ...delete current node and rebalance the tree */
+        t_idx = rb_delete(tree, n_idx), rb_set_cache(tree, t_idx);
+
+        /* ...get task timestamp */
+        ts = xf_task_timestamp((xf_task_t *)n_idx);
+        
+        /* ...advance scheduler timestamp */
+        xf_sched_timestamp_set(sched, ts);
+        
+        TRACE(DEBUG, _b("out: %x:[%p]"), ts, n_idx);
+        
+        /* ...return task */
+        return (xf_task_t *)n_idx;
+    }
+}
+
+/* ...cancel specified task execution (must be scheduled!) */
+void xf_sched_cancel(xf_sched_t *sched, xf_task_t *t)
+{
+    rb_tree_t      *tree = (rb_tree_t *)sched;
+    rb_idx_t        n_idx = t;
+    rb_idx_t        t_idx;
+
+    /* ...delete message from tree */
+    t_idx = rb_delete(tree, n_idx);
+
+    /* ...adjust head if that was the first message */
+    (n_idx == rb_cache(tree) ? rb_set_cache(tree, t_idx), 1 : 0);
+}
+
+/* ...initialize scheduler data */
+void xf_sched_init(xf_sched_t *sched)
+{
+    rb_init((rb_tree_t *)sched);
+}
diff --git a/hifi/xaf/hifi-dpf/core/xf-shmem.c b/hifi/xaf/hifi-dpf/core/xf-shmem.c
new file mode 100644
index 0000000..15d3b1d
--- /dev/null
+++ b/hifi/xaf/hifi-dpf/core/xf-shmem.c
@@ -0,0 +1,350 @@
+/*******************************************************************************
+* Copyright (C) 2018 Cadence Design Systems, Inc.
+* 
+* Permission is hereby granted, free of charge, to any person obtaining
+* a copy of this software and associated documentation files (the
+* "Software"), to use this Software with Cadence processor cores only and 
+* not with any other processors and platforms, subject to
+* the following conditions:
+* 
+* The above copyright notice and this permission notice shall be included
+* in all copies or substantial portions of the Software.
+* 
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+******************************************************************************/
+
+/*******************************************************************************
+ * xf-shmem.c
+ *
+ * DSP shared memory interface implementation
+ *
+ ******************************************************************************/
+
+#define MODULE_TAG                      SHMEM
+
+/*******************************************************************************
+ * Includes
+ ******************************************************************************/
+
+#include "xf.h"
+
+/*******************************************************************************
+ * Tracing tags
+ ******************************************************************************/
+
+/* ...general initialization sequence */
+TRACE_TAG(INIT, 1);
+
+/* ...interface status change */
+TRACE_TAG(EXEC, 0);
+
+/* ...command reception */
+TRACE_TAG(CMD, 1);
+
+/* ...response generation */
+TRACE_TAG(RSP, 1);
+
+#ifdef XAF_PROFILE_DSP
+#include "xa_profiler.h"
+#endif
+/*******************************************************************************
+ * Local constants definitions
+ ******************************************************************************/
+
+/* ...local interface status change flag */
+#define XF_PROXY_STATUS_LOCAL           (1 << 0)
+
+/* ...remote status change notification flag */
+#define XF_PROXY_STATUS_REMOTE          (1 << 1)
+
+/*******************************************************************************
+ * Internal helpers
+ ******************************************************************************/
+
+/* ...put message into proxy queue */
+static inline void xf_msg_proxy_put(xf_message_t *m)
+{
+    u32                 dst = XF_MSG_DST_CORE(m->id);
+    u32                 src = XF_MSG_SRC_CORE(m->id);
+    xf_core_rw_data_t  *rw = XF_CORE_RW_DATA(dst);
+    int                 first;
+
+    /* ...get an access to shared rw-memory (we are running on "source" core) */
+    xf_mutex_lock(src);
+    
+    /* ...assure memory coherency if needed */
+    if (XF_REMOTE_IPC_NON_COHERENT)
+    {
+        /* ...invalidate rw-shared memory region */
+        XF_PROXY_INVALIDATE(rw, sizeof(*rw));
+        
+        /* ...put message into shared queue */
+        first = xf_msg_enqueue(&rw->remote, m);
+
+        /* ...flush both message and shared queue data */
+        XF_PROXY_FLUSH(rw, sizeof(*rw)), XF_PROXY_FLUSH(m, sizeof(*m));
+    }
+    else
+    {
+        /* ...no memory coherency concerns; just place a message in the queue */
+        first = xf_msg_enqueue(&rw->remote, m);
+    }
+
+    /* ...release rw-memory region lock */
+    xf_mutex_unlock(src);
+
+    /* ...assert IPI interrupt on target ("destination") core if needed */
+    if (first && (dst ^ src))
+    {
+        xf_ipi_assert(dst);
+    }
+}
+
+/* ...retrieve message from proxy queue */
+static inline xf_message_t * xf_msg_proxy_get(u32 core)
+{
+    xf_core_rw_data_t  *rw = XF_CORE_RW_DATA(core);
+    xf_message_t       *m;
+    
+    /* ...retrieve message from queue in atomic fashion */
+    xf_mutex_lock(core);
+
+    /* ...assure memory coherency if needed */
+    if (XF_REMOTE_IPC_NON_COHERENT)
+    {
+        /* ...invalidate rw-memory */
+        XF_PROXY_INVALIDATE(rw, sizeof(*rw));
+
+        /* ...dequeue message from response queue */
+        m = xf_msg_dequeue(&rw->remote);
+
+        /* ...flush rw memory */
+        XF_PROXY_FLUSH(rw, sizeof(*rw));
+
+        /* ...invalidate message data if found */
+        (m ? XF_PROXY_INVALIDATE(m, sizeof(*m)) : 0);
+    }
+    else
+    {
+        /* ...just dequeue message from response queue */
+        m = xf_msg_dequeue(&rw->remote);
+    }
+    
+    /* ...release the rw-lock */
+    xf_mutex_unlock(core);
+
+    return m;
+}
+
+/*******************************************************************************
+ * Internal functions definitions
+ ******************************************************************************/
+
+/* ...retrieve all incoming commands from shared memory ring-buffer */
+static u32 xf_shmem_process_input(u32 core)
+{
+    xf_message_t   *m;
+    u32             read_idx;
+    u32             write_idx;
+    u32             status = 0;
+
+    /* ...get current value of write pointer */
+    read_idx = XF_PROXY_READ(core, cmd_read_idx);
+    write_idx = XF_PROXY_READ(core, cmd_write_idx);
+
+    TRACE(EXEC, _b("Command queue: write = %x / read = %x"), write_idx, read_idx);
+
+    /* ...process all committed commands */
+    while (!XF_QUEUE_EMPTY(read_idx, write_idx))
+    {
+        xf_proxy_message_t *command;
+
+        /* ...allocate message; the call should not fail */
+        if ((m = xf_msg_pool_get(&XF_CORE_RO_DATA(core)->pool)) == NULL)
+            break;
+
+        /* ...if queue was full, set global proxy update flag */
+        if (XF_QUEUE_FULL(read_idx, write_idx))
+            status |= XF_PROXY_STATUS_REMOTE | XF_PROXY_STATUS_LOCAL;
+        else
+            status |= XF_PROXY_STATUS_LOCAL;
+
+        /* ...get oldest not processed command */
+        command = XF_PROXY_COMMAND(core, XF_QUEUE_IDX(read_idx));
+
+        /*  ...synchronize memory contents */
+        XF_PROXY_INVALIDATE(command, sizeof(*command));
+
+        /* ...fill message parameters */
+        m->id = command->session_id;
+        m->opcode = command->opcode;
+        m->length = command->length;
+        m->buffer = xf_ipc_a2b(core, command->address);
+        TRACE(CMD, _b("C[%x]:(%x,%u,%p)"), m->id, m->opcode, m->length, m->buffer);
+
+        /* ...invalidate message buffer contents as required - not here - tbd */
+        (XF_OPCODE_CDATA(m->opcode) ? XF_PROXY_INVALIDATE(m->buffer, m->length) : 0);
+        
+        /* ...advance local reading index copy */
+        read_idx = XF_QUEUE_ADVANCE_IDX(read_idx);
+
+        /* ...update shadow copy of reading index */
+        XF_PROXY_WRITE(core, cmd_read_idx, read_idx);
+
+        /* ...and schedule message execution on proper core */
+        xf_msg_submit(m);
+    }
+
+    return status;
+}
+
+/* ...send out all pending outgoing responses to the shared memory ring-buffer */
+static u32 xf_shmem_process_output(u32 core)
+{
+    xf_message_t   *m;
+    u32             read_idx;
+    u32             write_idx;
+    u32             status = 0;
+
+    /* ...get current value of peer read pointer */
+    write_idx = XF_PROXY_READ(core, rsp_write_idx);
+    read_idx = XF_PROXY_READ(core, rsp_read_idx);
+
+    TRACE(EXEC, _b("Response queue: write = %08X / read = %08X"), write_idx, read_idx);
+
+    /* ...while we have response messages and there's space to write out one */
+    while (!XF_QUEUE_FULL(read_idx, write_idx))
+    {
+        xf_proxy_message_t     *response;
+
+        /* ...remove message from internal queue */
+        if ((m = xf_msg_proxy_get(core)) == NULL)
+            break;
+
+        /* ...notify remote interface each time we send it a message (only if it was empty?) */
+        status = XF_PROXY_STATUS_REMOTE | XF_PROXY_STATUS_LOCAL;
+
+#if 0
+        /* ...need to decide on best strategy - tbd */
+        if (XF_QUEUE_EMPTY(read_idx, write_idx))
+            status |= XF_PROXY_STATUS_REMOTE | XF_PROXY_STATUS_LOCAL;
+        else
+            status |= XF_PROXY_STATUS_LOCAL;
+#endif
+
+        /* ...flush message buffer contents to main memory as required - too late - different core - tbd */
+        (XF_OPCODE_RDATA(m->opcode) ? XF_PROXY_FLUSH(m->buffer, m->length) : 0);
+
+        /* ...find place in a queue for next response */
+        response = XF_PROXY_RESPONSE(core, XF_QUEUE_IDX(write_idx));
+
+        /* ...put the response message fields */
+        response->session_id = m->id;
+        response->opcode = m->opcode;
+        response->length = m->length;
+        response->address = xf_ipc_b2a(core, m->buffer);
+        /* ...flush the content of the caches to main memory */
+        XF_PROXY_FLUSH(response, sizeof(*response));
+
+#ifdef XAF_PROFILE_DSP
+        if((m->opcode == XF_FILL_THIS_BUFFER))
+        {
+            if((m->length != 0) && (m->length != 20))
+            {
+                prof.g_output_bytes += (unsigned long)m->length;
+            }
+            else if (m->length == 20)
+            {
+              /* Profiler re-initialization */
+              INIT_XA_PROFILER(prof,"DSP core");
+
+              /* update stream params on re-init */
+              xf_start_msg_t *sm = (xf_start_msg_t *)m->buffer;
+              prof.sample_rate = sm->sample_rate;
+              prof.channels = sm->channels;
+              prof.pcm_width = sm->pcm_width;
+            }
+        }
+#endif
+        TRACE(RSP, _b("R[%x]:(%x,%u,%p)"), m->id, m->opcode, m->length, m->buffer);
+
+        /* ...return message back to the pool */
+        xf_msg_pool_put(&XF_CORE_RO_DATA(core)->pool, m);
+
+        /* ...advance local writing index copy */
+        write_idx = XF_QUEUE_ADVANCE_IDX(write_idx);
+
+        /* ...update shared copy of queue write pointer */
+        XF_PROXY_WRITE(core, rsp_write_idx, write_idx);
+    }
+
+    /* ...return interface status change flags */
+    return status;
+}
+
+/*******************************************************************************
+ * Entry points
+ ******************************************************************************/
+
+/* ...process local/remote shared memory interface status change */
+void xf_shmem_process_queues(u32 core)
+{
+    u32     status;
+
+    do
+    {
+        /* ...acknowledge/clear any pending incoming interrupt */
+        XF_PROXY_SYNC_PEER(core);
+
+        /* ...send out pending response messages (frees message buffers, so do it first) */
+        status = xf_shmem_process_output(core);
+
+        /* ...receive and forward incoming command messages (allocates message buffers) */
+        status |= xf_shmem_process_input(core);
+
+        /* ...assert remote mailbox interrupt if global update bit is set */
+        if (status & XF_PROXY_STATUS_REMOTE)
+        {
+            XF_PROXY_NOTIFY_PEER(core);
+        }
+    }
+    while (status);
+}
+
+/* ...completion callback for message originating from remote proxy */
+void xf_msg_proxy_complete(xf_message_t *m)
+{
+    /* ...place message into proxy response queue */
+    xf_msg_proxy_put(m);
+}
+
+/* ...initialize shared memory interface (DSP side) */
+int xf_shmem_init(u32 core)
+{
+    xf_core_rw_data_t  *rw = XF_CORE_RW_DATA(core);
+    xf_core_ro_data_t  *ro = XF_CORE_RO_DATA(core);
+
+    /* ...initialize local/remote message queues */
+    xf_msg_queue_init(&rw->local);
+    xf_msg_queue_init(&rw->remote);
+
+    /* ...initialize global message list */
+    XF_CHK_API(xf_msg_pool_init(&ro->pool, XF_CFG_MESSAGE_POOL_SIZE, core));
+
+    /* ...flush memory content as needed */
+    (XF_REMOTE_IPC_NON_COHERENT ? XF_PROXY_FLUSH(rw, sizeof(*rw)) : 0);
+
+    /* ...system-specific initialization of IPC layer */
+    XF_CHK_API(xf_ipc_init(core));
+
+    TRACE(INIT, _b("SHMEM-%u subsystem initialized"), core);
+
+    return 0;
+}
diff --git a/hifi/xaf/hifi-dpf/include/audio/xa-audio-decoder-api.h b/hifi/xaf/hifi-dpf/include/audio/xa-audio-decoder-api.h
new file mode 100644
index 0000000..797bf23
--- /dev/null
+++ b/hifi/xaf/hifi-dpf/include/audio/xa-audio-decoder-api.h
@@ -0,0 +1,66 @@
+/*******************************************************************************
+* Copyright (C) 2018 Cadence Design Systems, Inc.
+* 
+* Permission is hereby granted, free of charge, to any person obtaining
+* a copy of this software and associated documentation files (the
+* "Software"), to use this Software with Cadence processor cores only and 
+* not with any other processors and platforms, subject to
+* the following conditions:
+* 
+* The above copyright notice and this permission notice shall be included
+* in all copies or substantial portions of the Software.
+* 
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+******************************************************************************/
+
+/*******************************************************************************
+ * xa-audio-decoder-api.h
+ *
+ * Generic audio decoder API
+ *
+ ******************************************************************************/
+
+#ifndef __XA_ADEC_API_H__
+#define __XA_ADEC_API_H__
+
+/* ...includes */
+#include "xa_type_def.h"
+#include "xa_error_standards.h"
+#include "xa_apicmd_standards.h"
+#include "xa_memory_standards.h"
+
+/* ...generic audio-decoder configuration parameters */
+enum xa_config_param_codec {
+    XA_CODEC_CONFIG_PARAM_CHANNELS       = 0x10000 + 0,
+    XA_CODEC_CONFIG_PARAM_SAMPLE_RATE    = 0x10000 + 1,
+    XA_CODEC_CONFIG_PARAM_PCM_WIDTH      = 0x10000 + 2,
+    XA_CODEC_CONFIG_PARAM_PRODUCED       = 0x10000 + 3
+};
+
+/* ...ports indices */
+enum xa_codec_ports {
+    XA_CODEC_INPUT_PORT  = 0,
+    XA_CODEC_OUTPUT_PORT = 1
+};
+
+/* ...non-fatal execution errors */
+enum
+{
+    XA_CODEC_EXEC_NO_DATA = XA_ERROR_CODE(xa_severity_nonfatal, xa_class_execute, XA_CODEC_GENERIC, 0)
+};
+
+/* ...fatal execution errors */
+enum
+{
+    XA_CODEC_EXEC_SEQUENCE = XA_ERROR_CODE(xa_severity_fatal, xa_class_execute, XA_CODEC_GENERIC, 0),
+    XA_CODEC_EXEC_MISBEHAVING = XA_ERROR_CODE(xa_severity_fatal, xa_class_execute, XA_CODEC_GENERIC, 1),
+};
+
+#endif
diff --git a/hifi/xaf/hifi-dpf/include/audio/xa-mixer-api.h b/hifi/xaf/hifi-dpf/include/audio/xa-mixer-api.h
new file mode 100644
index 0000000..0de1745
--- /dev/null
+++ b/hifi/xaf/hifi-dpf/include/audio/xa-mixer-api.h
@@ -0,0 +1,157 @@
+/*******************************************************************************
+* Copyright (C) 2018 Cadence Design Systems, Inc.
+* 
+* Permission is hereby granted, free of charge, to any person obtaining
+* a copy of this software and associated documentation files (the
+* "Software"), to use this Software with Cadence processor cores only and 
+* not with any other processors and platforms, subject to
+* the following conditions:
+* 
+* The above copyright notice and this permission notice shall be included
+* in all copies or substantial portions of the Software.
+* 
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+******************************************************************************/
+
+/*******************************************************************************
+ * xa-mixer-api.h
+ *
+ * Mixer component API
+ *
+ ******************************************************************************/
+
+#ifndef __XA_MIXER_API_H__
+#define __XA_MIXER_API_H__
+
+/*******************************************************************************
+ * Includes
+ ******************************************************************************/
+
+#include "xa_type_def.h"
+#include "xa_error_standards.h"
+#include "xa_apicmd_standards.h"
+#include "xa_memory_standards.h"
+
+/*******************************************************************************
+ * Constants definitions
+ ******************************************************************************/
+
+/* ...mixer-specific configuration parameters */
+enum xa_config_param_mixer {
+    XA_MIXER_CONFIG_PARAM_INPUT_TRACKS      = 0,
+    XA_MIXER_CONFIG_PARAM_PCM_WIDTH         = 1,
+    XA_MIXER_CONFIG_PARAM_CHANNELS          = 2,
+    XA_MIXER_CONFIG_PARAM_SAMPLE_RATE       = 4,
+    XA_MIXER_CONFIG_PARAM_FRAME_SIZE        = 5,
+    XA_MIXER_CONFIG_PARAM_BUFFER_SIZE       = 6,
+    XA_MIXER_CONFIG_PARAM_VOLUME            = 7,
+    XA_MIXER_CONFIG_PARAM_NUM               = 8
+};
+
+/* ...component identifier (informative) */
+#define XA_CODEC_MIXER                  1
+
+/* ...global limitation - maximal mixer track number */
+#define XA_MIXER_MAX_TRACK_NUMBER       4
+
+/* ...volume representation */
+#define __XA_MIXER_VOLUME(v)            \
+    ({ u32  __v = (u32)((v) * (1 << 12)); (__v > 0xFFFF ? __v = 0xFFFF : 0); (u16)__v; })
+
+/* ...mixer volume setting command encoding */
+#define XA_MIXER_VOLUME(track, channel, volume) \
+    (__XA_MIXER_VOLUME(volume) | ((track) << 16) | ((channel) << 20))
+
+/*******************************************************************************
+ * Class 0: API Errors
+ ******************************************************************************/
+
+#define XA_MIXER_API_NONFATAL(e)        \
+    XA_ERROR_CODE(xa_severity_nonfatal, xa_class_api, XA_CODEC_MIXER, (e))
+
+#define XA_MIXER_API_FATAL(e)           \
+    XA_ERROR_CODE(xa_severity_fatal, xa_class_api, XA_CODEC_MIXER, (e))
+
+enum xa_error_nonfatal_api_mixer {
+    XA_MIXER_API_NONFATAL_MAX = XA_MIXER_API_NONFATAL(0)
+};
+
+enum xa_error_fatal_api_mixer {
+    XA_MIXER_API_FATAL_MAX = XA_MIXER_API_FATAL(0)
+};
+
+/*******************************************************************************
+ * Class 1: Configuration Errors
+ ******************************************************************************/
+
+#define XA_MIXER_CONFIG_NONFATAL(e)     \
+    XA_ERROR_CODE(xa_severity_nonfatal, xa_class_config, XA_CODEC_MIXER, (e))
+
+#define XA_MIXER_CONFIG_FATAL(e)        \
+    XA_ERROR_CODE(xa_severity_fatal, xa_class_config, XA_CODEC_MIXER, (e))
+
+enum xa_error_nonfatal_config_mixer {
+    XA_MIXER_CONFIG_NONFATAL_RANGE  = XA_MIXER_CONFIG_NONFATAL(0),
+    XA_MIXER_CONFIG_NONFATAL_STATE  = XA_MIXER_CONFIG_NONFATAL(1),
+    XA_MIXER_CONFIG_NONFATAL_MAX    = XA_MIXER_CONFIG_NONFATAL(2)
+};
+
+enum xa_error_fatal_config_mixer {
+    XA_MIXER_CONFIG_FATAL_RANGE     = XA_MIXER_CONFIG_FATAL(0),
+    XA_MIXER_CONFIG_FATAL_TRACK_STATE = XA_MIXER_CONFIG_FATAL(0 + XA_MIXER_CONFIG_NONFATAL_MAX),
+    XA_MIXER_CONFIG_FATAL_MAX       = XA_MIXER_CONFIG_FATAL(1)
+};
+
+/*******************************************************************************
+ * Class 2: Execution Class Errors
+ ******************************************************************************/
+
+#define XA_MIXER_EXEC_NONFATAL(e)       \
+    XA_ERROR_CODE(xa_severity_nonfatal, xa_class_execute, XA_CODEC_MIXER, (e))
+
+#define XA_MIXER_EXEC_FATAL(e)          \
+    XA_ERROR_CODE(xa_severity_fatal, xa_class_execute, XA_CODEC_MIXER, (e))
+
+enum xa_error_nonfatal_execute_mixer {
+    XA_MIXER_EXEC_NONFATAL_STATE    = XA_MIXER_EXEC_NONFATAL(0),
+    XA_MIXER_EXEC_NONFATAL_NO_DATA  = XA_MIXER_EXEC_NONFATAL(1),
+    XA_MIXER_EXEC_NONFATAL_INPUT    = XA_MIXER_EXEC_NONFATAL(2),
+    XA_MIXER_EXEC_NONFATAL_OUTPUT   = XA_MIXER_EXEC_NONFATAL(3),
+    XA_MIXER_EXEC_NONFATAL_MAX      = XA_MIXER_EXEC_NONFATAL(4)
+};
+
+enum xa_error_fatal_execute_mixer {
+    XA_MIXER_EXEC_FATAL_STATE       = XA_MIXER_EXEC_FATAL(0),
+    XA_MIXER_EXEC_FATAL_INPUT       = XA_MIXER_EXEC_FATAL(1),
+    XA_MIXER_EXEC_FATAL_OUTPUT      = XA_MIXER_EXEC_FATAL(2),
+    XA_MIXER_EXEC_FATAL_MAX         = XA_MIXER_EXEC_FATAL(3)
+};
+
+/*******************************************************************************
+ * API function definition (tbd)
+ ******************************************************************************/
+
+#if defined(USE_DLL) && defined(_WIN32)
+#define DLL_SHARED __declspec(dllimport)
+#elif defined (_WINDLL)
+#define DLL_SHARED __declspec(dllexport)
+#else
+#define DLL_SHARED
+#endif
+
+#if defined(__cplusplus)
+extern "C" {
+#endif  /* __cplusplus */
+DLL_SHARED xa_codec_func_t xa_mixer;
+#if defined(__cplusplus)
+}
+#endif  /* __cplusplus */
+
+#endif /* __XA_MIXER_API_H__ */
diff --git a/hifi/xaf/hifi-dpf/include/audio/xa_apicmd_standards.h b/hifi/xaf/hifi-dpf/include/audio/xa_apicmd_standards.h
new file mode 100644
index 0000000..eb1b78e
--- /dev/null
+++ b/hifi/xaf/hifi-dpf/include/audio/xa_apicmd_standards.h
@@ -0,0 +1,107 @@
+/*******************************************************************************
+* Copyright (C) 2018 Cadence Design Systems, Inc.
+* 
+* Permission is hereby granted, free of charge, to any person obtaining
+* a copy of this software and associated documentation files (the
+* "Software"), to use this Software with Cadence processor cores only and 
+* not with any other processors and platforms, subject to
+* the following conditions:
+* 
+* The above copyright notice and this permission notice shall be included
+* in all copies or substantial portions of the Software.
+* 
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+******************************************************************************/
+/*******************************************************************************
+*
+* NOTE, ANY CHANGES TO THIS FILE MAY AFFECT UNDERLYING AUDIO / SPEECH CODEC
+* LIBRARY COMPONENT FROM CADENCE DESIGN SYSTEMS, INC.
+*
+******************************************************************************/
+
+
+#ifndef __XA_API_CMD_STANDARDS_H__
+#define __XA_API_CMD_STANDARDS_H__
+
+/*****************************************************************************/
+/* Standard API commands                                                     */
+/*****************************************************************************/
+
+enum xa_api_cmd_generic {
+  XA_API_CMD_GET_LIB_ID_STRINGS	      = 0x0001,
+
+  XA_API_CMD_GET_API_SIZE             = 0x0002,
+  XA_API_CMD_INIT                     = 0x0003,
+
+  XA_API_CMD_SET_CONFIG_PARAM         = 0x0004,
+  XA_API_CMD_GET_CONFIG_PARAM         = 0x0005,
+
+  XA_API_CMD_GET_MEMTABS_SIZE         = 0x0006,
+  XA_API_CMD_SET_MEMTABS_PTR          = 0x0007,
+  XA_API_CMD_GET_N_MEMTABS            = 0x0008,
+
+  XA_API_CMD_EXECUTE                  = 0x0009,
+
+  XA_API_CMD_PUT_INPUT_QUERY          = 0x000A,
+  XA_API_CMD_GET_CURIDX_INPUT_BUF     = 0x000B,
+  XA_API_CMD_SET_INPUT_BYTES          = 0x000C,
+  XA_API_CMD_GET_OUTPUT_BYTES         = 0x000D,
+  XA_API_CMD_INPUT_OVER               = 0x000E,
+
+  XA_API_CMD_GET_MEM_INFO_SIZE        = 0x0010,
+  XA_API_CMD_GET_MEM_INFO_ALIGNMENT   = 0x0011,
+  XA_API_CMD_GET_MEM_INFO_TYPE        = 0x0012,
+  XA_API_CMD_GET_MEM_INFO_PLACEMENT   = 0x0013,
+  XA_API_CMD_GET_MEM_INFO_PRIORITY    = 0x0014,
+  XA_API_CMD_SET_MEM_PTR              = 0x0015,
+  XA_API_CMD_SET_MEM_INFO_SIZE        = 0x0016,
+  XA_API_CMD_SET_MEM_PLACEMENT        = 0x0017,
+
+  XA_API_CMD_GET_N_TABLES             = 0x0018,
+  XA_API_CMD_GET_TABLE_INFO_SIZE      = 0x0019,
+  XA_API_CMD_GET_TABLE_INFO_ALIGNMENT = 0x001A,
+  XA_API_CMD_GET_TABLE_INFO_PRIORITY  = 0x001B,
+  XA_API_CMD_SET_TABLE_PTR            = 0x001C,
+  XA_API_CMD_GET_TABLE_PTR            = 0x001D
+};
+
+/*****************************************************************************/
+/* Standard API command indices                                              */
+/*****************************************************************************/
+
+enum xa_cmd_type_generic {
+  /* XA_API_CMD_GET_LIB_ID_STRINGS indices */
+  XA_CMD_TYPE_LIB_NAME                    = 0x0100,
+  XA_CMD_TYPE_LIB_VERSION                 = 0x0200,
+  XA_CMD_TYPE_API_VERSION                 = 0x0300,
+
+  /* XA_API_CMD_INIT indices */
+  XA_CMD_TYPE_INIT_API_PRE_CONFIG_PARAMS  = 0x0100,
+  XA_CMD_TYPE_INIT_API_POST_CONFIG_PARAMS = 0x0200,
+  XA_CMD_TYPE_INIT_PROCESS                = 0x0300,
+  XA_CMD_TYPE_INIT_DONE_QUERY             = 0x0400,
+
+  /* XA_API_CMD_EXECUTE indices */
+  XA_CMD_TYPE_DO_EXECUTE                  = 0x0100,
+  XA_CMD_TYPE_DONE_QUERY                  = 0x0200,
+  XA_CMD_TYPE_DO_RUNTIME_INIT             = 0x0300
+};
+
+
+/*****************************************************************************/
+/* Standard API configuration parameters                                     */
+/*****************************************************************************/
+
+enum xa_config_param_generic {
+  XA_CONFIG_PARAM_CUR_INPUT_STREAM_POS    = 0x0100,
+  XA_CONFIG_PARAM_GEN_INPUT_STREAM_POS    = 0x0200,
+};
+
+#endif /* __XA_API_CMD_STANDARDS_H__ */
diff --git a/hifi/xaf/hifi-dpf/include/audio/xa_error_standards.h b/hifi/xaf/hifi-dpf/include/audio/xa_error_standards.h
new file mode 100644
index 0000000..1b67b52
--- /dev/null
+++ b/hifi/xaf/hifi-dpf/include/audio/xa_error_standards.h
@@ -0,0 +1,79 @@
+/*******************************************************************************
+* Copyright (C) 2018 Cadence Design Systems, Inc.
+* 
+* Permission is hereby granted, free of charge, to any person obtaining
+* a copy of this software and associated documentation files (the
+* "Software"), to use this Software with Cadence processor cores only and 
+* not with any other processors and platforms, subject to
+* the following conditions:
+* 
+* The above copyright notice and this permission notice shall be included
+* in all copies or substantial portions of the Software.
+* 
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+******************************************************************************/
+/*******************************************************************************
+*
+* NOTE, ANY CHANGES TO THIS FILE MAY AFFECT UNDERLYING AUDIO / SPEECH CODEC
+* LIBRARY COMPONENT FROM CADENCE DESIGN SYSTEMS, INC.
+*
+******************************************************************************/
+
+
+#ifndef __XA_ERROR_STANDARDS_H__
+#define __XA_ERROR_STANDARDS_H__
+
+/*****************************************************************************/
+/* File includes                                                             */
+/*  xa_type_def.h                                                            */
+/*****************************************************************************/
+
+/*****************************************************************************/
+/* Constant hash defines                                                     */
+/*****************************************************************************/
+#define XA_NO_ERROR	0
+#define XA_FATAL_ERROR	0x80000000
+
+enum xa_error_severity {
+  xa_severity_nonfatal = 0,
+  xa_severity_fatal    = 0xffffffff
+};
+
+enum xa_error_class {
+  xa_class_api     = 0,
+  xa_class_config  = 1,
+  xa_class_execute = 2,
+  xa_class_proxy   = 3
+};
+
+#define XA_CODEC_GENERIC	0
+
+#define XA_ERROR_CODE(severity, class, codec, index)	((severity << 15) | (class << 11) | (codec << 6) | index)
+#define XA_ERROR_SEVERITY(code)	(((code) & XA_FATAL_ERROR) != 0)
+#define XA_ERROR_CLASS(code)	(((code) >> 11) & 0x0f)
+#define XA_ERROR_CODEC(code)    (((code) >>  6) & 0x1f)
+#define XA_ERROR_SUBCODE(code)	(((code) >>  0) & 0x3f)
+
+/* Our convention is that only api-class errors can be generic ones. */
+
+/*****************************************************************************/
+/* Class 0: API Errors                                                       */
+/*****************************************************************************/
+/* Non Fatal Errors */
+/* (none) */
+/* Fatal Errors */
+enum xa_error_fatal_api_generic {
+  XA_API_FATAL_MEM_ALLOC        = XA_ERROR_CODE(xa_severity_fatal, xa_class_api, XA_CODEC_GENERIC, 0),
+  XA_API_FATAL_MEM_ALIGN        = XA_ERROR_CODE(xa_severity_fatal, xa_class_api, XA_CODEC_GENERIC, 1),
+  XA_API_FATAL_INVALID_CMD      = XA_ERROR_CODE(xa_severity_fatal, xa_class_api, XA_CODEC_GENERIC, 2),
+  XA_API_FATAL_INVALID_CMD_TYPE = XA_ERROR_CODE(xa_severity_fatal, xa_class_api, XA_CODEC_GENERIC, 3)
+};
+
+#endif /* __XA_ERROR_STANDARDS_H__ */
diff --git a/hifi/xaf/hifi-dpf/include/audio/xa_memory_standards.h b/hifi/xaf/hifi-dpf/include/audio/xa_memory_standards.h
new file mode 100644
index 0000000..27ec455
--- /dev/null
+++ b/hifi/xaf/hifi-dpf/include/audio/xa_memory_standards.h
@@ -0,0 +1,104 @@
+/*******************************************************************************
+* Copyright (C) 2018 Cadence Design Systems, Inc.
+* 
+* Permission is hereby granted, free of charge, to any person obtaining
+* a copy of this software and associated documentation files (the
+* "Software"), to use this Software with Cadence processor cores only and 
+* not with any other processors and platforms, subject to
+* the following conditions:
+* 
+* The above copyright notice and this permission notice shall be included
+* in all copies or substantial portions of the Software.
+* 
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+******************************************************************************/
+/*******************************************************************************
+*
+* NOTE, ANY CHANGES TO THIS FILE MAY AFFECT UNDERLYING AUDIO / SPEECH CODEC
+* LIBRARY COMPONENT FROM CADENCE DESIGN SYSTEMS, INC.
+*
+******************************************************************************/
+
+
+#ifndef __XA_MEMORY_STANDARDS_H__
+#define __XA_MEMORY_STANDARDS_H__
+
+/*****************************************************************************/
+/* Constant hash defines                                                     */
+/*****************************************************************************/
+/* when you don't need alignment, pass this to memory library */
+#define XA_MEM_NO_ALIGN				0x01
+
+/* standard memory types */
+/* to be used inter frames */
+#define XA_MEMTYPE_PERSIST				0x00 
+/* read write, to be used intra frames */
+#define XA_MEMTYPE_SCRATCH				0x01 
+/* read only memory, intra frame */
+#define XA_MEMTYPE_INPUT				0x02 
+/* read-write memory, for usable output, intra frame */
+#define XA_MEMTYPE_OUTPUT				0x03 
+/* readonly memory, inter frame */
+#define XA_MEMTYPE_TABLE				0x04 
+/* input buffer before mem tabs allocation */
+#define XA_MEMTYPE_PRE_FRAME_INPUT		0x05 
+/* input buffer before mem tabs allocation */
+#define XA_MEMTYPE_PRE_FRAME_SCRATCH	0x06 
+/* for local variables */
+#define XA_MEMTYPE_AUTO_VAR				0x80 
+
+/* standard memory priorities */
+#define XA_MEMPRIORITY_ANYWHERE			0x00
+#define XA_MEMPRIORITY_LOWEST			0x01
+#define XA_MEMPRIORITY_LOW				0x02
+#define XA_MEMPRIORITY_NORM				0x03
+#define XA_MEMPRIORITY_ABOVE_NORM		0x04
+#define XA_MEMPRIORITY_HIGH				0x05
+#define XA_MEMPRIORITY_HIGHER			0x06
+#define XA_MEMPRIORITY_CRITICAL			0x07
+
+/* standard memory placements */
+/* placement is defined by 64 bits */
+
+#define XA_MEMPLACE_FAST_RAM_0			0x000001
+#define XA_MEMPLACE_FAST_RAM_1			0x000002
+#define XA_MEMPLACE_FAST_RAM_2			0x000004
+#define XA_MEMPLACE_FAST_RAM_3			0x000008
+#define XA_MEMPLACE_FAST_RAM_4			0x000010
+#define XA_MEMPLACE_FAST_RAM_5			0x000020
+#define XA_MEMPLACE_FAST_RAM_6			0x000040
+#define XA_MEMPLACE_FAST_RAM_7			0x000080
+
+#define XA_MEMPLACE_INT_RAM_0			0x000100
+#define XA_MEMPLACE_INT_RAM_1			0x000200
+#define XA_MEMPLACE_INT_RAM_2			0x000400
+#define XA_MEMPLACE_INT_RAM_3			0x000800
+#define XA_MEMPLACE_INT_RAM_4			0x001000
+#define XA_MEMPLACE_INT_RAM_5			0x002000
+#define XA_MEMPLACE_INT_RAM_6			0x004000
+#define XA_MEMPLACE_INT_RAM_7			0x008000
+
+#define XA_MEMPLACE_EXT_RAM_0			0x010000
+#define XA_MEMPLACE_EXT_RAM_1			0x020000
+#define XA_MEMPLACE_EXT_RAM_2			0x040000
+#define XA_MEMPLACE_EXT_RAM_3			0x080000
+#define XA_MEMPLACE_EXT_RAM_4			0x100000
+#define XA_MEMPLACE_EXT_RAM_5			0x200000
+#define XA_MEMPLACE_EXT_RAM_6			0x400000
+#define XA_MEMPLACE_EXT_RAM_7			0x800000
+
+#define XA_MEMPLACE_DONTCARE_H			0xFFFFFFFF
+#define XA_MEMPLACE_DONTCARE_L			0xFFFFFFFF
+
+/* the simple common PC RAM */
+#define XA_PC_RAM_H					0x00000000
+#define XA_PC_RAM_L					XA_MEMPLACE_EXT_RAM_0
+
+#endif /* __XA_MEMORY_STANDARDS_H__ */
diff --git a/hifi/xaf/hifi-dpf/include/audio/xa_type_def.h b/hifi/xaf/hifi-dpf/include/audio/xa_type_def.h
new file mode 100644
index 0000000..e83cdd3
--- /dev/null
+++ b/hifi/xaf/hifi-dpf/include/audio/xa_type_def.h
@@ -0,0 +1,98 @@
+/*******************************************************************************
+* Copyright (C) 2018 Cadence Design Systems, Inc.
+* 
+* Permission is hereby granted, free of charge, to any person obtaining
+* a copy of this software and associated documentation files (the
+* "Software"), to use this Software with Cadence processor cores only and 
+* not with any other processors and platforms, subject to
+* the following conditions:
+* 
+* The above copyright notice and this permission notice shall be included
+* in all copies or substantial portions of the Software.
+* 
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+******************************************************************************/
+/*******************************************************************************
+*
+* NOTE, ANY CHANGES TO THIS FILE MAY AFFECT UNDERLYING AUDIO / SPEECH CODEC
+* LIBRARY COMPONENT FROM CADENCE DESIGN SYSTEMS, INC.
+*
+******************************************************************************/
+
+
+#ifndef  __XA_TYPE_DEF_H__
+#define  __XA_TYPE_DEF_H__
+
+/****************************************************************************/
+/*     types               type define    prefix        examples      bytes */
+/************************  ***********    ******    ****************  ***** */
+typedef signed char             WORD8   ;/* b       WORD8    b_name     1   */
+typedef signed char         *   pWORD8  ;/* pb      pWORD8   pb_nmae    1   */
+typedef unsigned char           UWORD8  ;/* ub      UWORD8   ub_count   1   */
+typedef unsigned char       *   pUWORD8 ;/* pub     pUWORD8  pub_count  1   */
+
+typedef signed short            WORD16  ;/* s       WORD16   s_count    2   */
+typedef signed short        *   pWORD16 ;/* ps      pWORD16  ps_count   2   */
+typedef unsigned short          UWORD16 ;/* us      UWORD16  us_count   2   */
+typedef unsigned short      *   pUWORD16;/* pus     pUWORD16 pus_count  2   */
+
+typedef signed int              WORD24  ;/* k       WORD24   k_count    3   */
+typedef signed int          *   pWORD24 ;/* pk      pWORD24  pk_count   3   */
+typedef unsigned int            UWORD24 ;/* uk      UWORD24  uk_count   3   */
+typedef unsigned int        *   pUWORD24;/* puk     pUWORD24 puk_count  3   */
+
+typedef signed int              WORD32  ;/* i       WORD32   i_count    4   */
+typedef signed int          *   pWORD32 ;/* pi      pWORD32  pi_count   4   */
+typedef unsigned int            UWORD32 ;/* ui      UWORD32  ui_count   4   */
+typedef unsigned int        *   pUWORD32;/* pui     pUWORD32 pui_count  4   */
+
+typedef signed long long        WORD40  ;/* m       WORD40   m_count    5   */
+typedef signed long long    *   pWORD40 ;/* pm      pWORD40  pm_count   5   */
+typedef unsigned long long      UWORD40 ;/* um      UWORD40  um_count   5   */
+typedef unsigned long long  *   pUWORD40;/* pum     pUWORD40 pum_count  5   */
+
+typedef signed long long        WORD64  ;/* h       WORD64   h_count    8   */
+typedef signed long long    *   pWORD64 ;/* ph      pWORD64  ph_count   8   */
+typedef unsigned long long      UWORD64 ;/* uh      UWORD64  uh_count   8   */
+typedef unsigned long long  *   pUWORD64;/* puh     pUWORD64 puh_count  8   */
+
+typedef float                   FLOAT32 ;/* f       FLOAT32  f_count    4   */
+typedef float               *   pFLOAT32;/* pf      pFLOAT32 pf_count   4   */
+typedef double                  FLOAT64 ;/* d       UFLOAT64 d_count    8   */
+typedef double              *   pFlOAT64;/* pd      pFLOAT64 pd_count   8   */
+
+typedef void                    VOID    ;/* v       VOID     v_flag     4   */
+typedef void                *   pVOID   ;/* pv      pVOID    pv_flag    4   */
+
+/* variable size types: platform optimized implementation */
+//typedef signed int              BOOL    ;/* bool    BOOL     bool_true      */
+//typedef unsigned int            UBOOL   ;/* ubool   BOOL     ubool_true     */
+typedef signed int              FLAG    ;/* flag    FLAG     flag_false     */
+typedef unsigned int            UFLAG   ;/* uflag   FLAG     uflag_false    */
+typedef signed int              LOOPIDX ;/* lp      LOOPIDX  lp_index       */
+typedef unsigned int            ULOOPIDX;/* ulp     SLOOPIDX ulp_index      */
+typedef signed int              WORD    ;/* lp      LOOPIDX  lp_index       */
+typedef unsigned int            UWORD   ;/* ulp     SLOOPIDX ulp_index      */
+
+typedef LOOPIDX                 LOOPINDEX; /* lp    LOOPIDX  lp_index       */
+typedef ULOOPIDX                ULOOPINDEX;/* ulp   SLOOPIDX ulp_index      */
+
+#define PLATFORM_INLINE __inline
+
+typedef struct xa_codec_opaque { WORD32 _; } *xa_codec_handle_t;
+
+typedef int XA_ERRORCODE;
+
+typedef XA_ERRORCODE xa_codec_func_t(xa_codec_handle_t p_xa_module_obj,
+				     WORD32            i_cmd,
+				     WORD32            i_idx,
+				     pVOID             pv_value);
+
+#endif /* __XA_TYPE_DEF_H__ */
diff --git a/hifi/xaf/hifi-dpf/include/lib/mutex.h b/hifi/xaf/hifi-dpf/include/lib/mutex.h
new file mode 100644
index 0000000..2aef0f6
--- /dev/null
+++ b/hifi/xaf/hifi-dpf/include/lib/mutex.h
@@ -0,0 +1,59 @@
+/*******************************************************************************
+* Copyright (C) 2018 Cadence Design Systems, Inc.
+* 
+* Permission is hereby granted, free of charge, to any person obtaining
+* a copy of this software and associated documentation files (the
+* "Software"), to use this Software with Cadence processor cores only and 
+* not with any other processors and platforms, subject to
+* the following conditions:
+* 
+* The above copyright notice and this permission notice shall be included
+* in all copies or substantial portions of the Software.
+* 
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+******************************************************************************/
+
+/*******************************************************************************
+ * mutex.h
+ *
+ *
+ * Implementation of "non-robust" Szymanski linear-waiting algorithm. Types of
+ * failures tolerated by Szymanski's "robust" algorithm are not specific for
+ * Xtensa DSP cluster and therefore more lightweight version of the algorithm
+ * is used. FIFO servicing property is of low importance, and faster/smaller
+ * version with linear-wait property is preferable.
+ *
+ * We assume there is just a single mutex in the system, and all communication
+ * variables are defined somewhere in board-specific headers and imported here
+ * by means of macros MUTEX_SHARED_READ/WRITE.
+ ******************************************************************************/
+
+#ifndef __MUTEX_H
+#define __MUTEX_H
+
+/*******************************************************************************
+ * Imported macros
+ ******************************************************************************/
+
+#if !defined(MUTEX_SHARED_READ) || !defined(MUTEX_SHARED_WRITE)
+#error "Macros MUTEX_SHARED_READ and/or MUTEX_SHARED_WRITE not defined"
+#endif
+
+/*******************************************************************************
+ * Entry points
+ ******************************************************************************/
+
+/* ...acquire global mutex from i-th core */
+extern void mutex_lock(u32 i);
+
+/* ...release global mutex from i-th core */
+extern void mutex_unlock(u32 i);
+
+#endif  /* __MUTEX_H */
diff --git a/hifi/xaf/hifi-dpf/include/lib/rbtree.h b/hifi/xaf/hifi-dpf/include/lib/rbtree.h
new file mode 100644
index 0000000..7f02cdf
--- /dev/null
+++ b/hifi/xaf/hifi-dpf/include/lib/rbtree.h
@@ -0,0 +1,157 @@
+/*******************************************************************************
+* Copyright (C) 2018 Cadence Design Systems, Inc.
+* 
+* Permission is hereby granted, free of charge, to any person obtaining
+* a copy of this software and associated documentation files (the
+* "Software"), to use this Software with Cadence processor cores only and 
+* not with any other processors and platforms, subject to
+* the following conditions:
+* 
+* The above copyright notice and this permission notice shall be included
+* in all copies or substantial portions of the Software.
+* 
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+******************************************************************************/
+
+/*******************************************************************************
+ * rbtree.h
+ *
+ * Generic implmentation of red-black trees
+ *
+ *******************************************************************************/
+
+#ifndef __RBTREE_H
+#define __RBTREE_H
+
+/*******************************************************************************
+ * Red-black tree node definition
+ ******************************************************************************/
+
+/* ...reference to rb-tree node */
+typedef struct rb_node  *rb_idx_t;
+
+/* ...rb-tree node */
+typedef struct rb_node
+{
+    /* ...pointers to parent and two children */
+    rb_idx_t            parent, left, right;
+    
+    /* ...node color (least-significant-bit only) */
+    u32                 color;
+
+}   rb_node_t;
+
+/* ...rb-tree data */
+typedef struct rb_tree_t
+{
+    /* ...tree sentinel node */
+    rb_node_t           root;
+
+}   rb_tree_t;    
+
+/*******************************************************************************
+ * Helpers
+ ******************************************************************************/
+
+/* ...left child accessor */
+static inline rb_idx_t rb_left(rb_tree_t *tree, rb_idx_t n_idx)
+{
+    return n_idx->left;
+}
+
+/* ...right child accessor */
+static inline rb_idx_t rb_right(rb_tree_t *tree, rb_idx_t n_idx)
+{
+    return n_idx->right;
+}
+
+/* ...parent node accessor */
+static inline rb_idx_t rb_parent(rb_tree_t *tree, rb_idx_t n_idx)
+{
+    return n_idx->parent;
+}
+
+/* ...tree root node accessor */
+static inline rb_idx_t rb_root(rb_tree_t *tree)
+{
+    return rb_left(tree, &tree->root);
+}
+
+/* ...tree data pointer accessor */
+static inline rb_idx_t rb_cache(rb_tree_t *tree)
+{
+    return rb_right(tree, &tree->root);
+}
+
+/* ...tree null node */
+static inline rb_idx_t rb_null(rb_tree_t *tree)
+{
+    return &tree->root;
+}
+
+/* ...get user-bits stored in node color */
+static inline u32 rb_node_data(rb_tree_t *tree, rb_idx_t n_idx)
+{
+    return (n_idx->color >> 1);
+}
+
+/* ...left child assignment */
+static inline void rb_set_left(rb_tree_t *tree, rb_idx_t n_idx, rb_node_t *child)
+{
+    n_idx->left = child;
+}
+
+/* ...right child assignment */
+static inline void rb_set_right(rb_tree_t *tree, rb_idx_t n_idx, rb_node_t *child)
+{
+    n_idx->right = child;
+}
+
+/* ...cache tree client index */
+static inline void rb_set_cache(rb_tree_t *tree, rb_idx_t c_idx)
+{
+    tree->root.right = c_idx;
+}
+
+/* ...get user-bits stored in node color */
+static inline void rb_set_node_data(rb_tree_t *tree, rb_idx_t n_idx, u32 data)
+{
+    n_idx->color = (n_idx->color & 0x1) | (data << 1);
+}
+
+/*******************************************************************************
+ * API functions
+ ******************************************************************************/
+
+/* ...initialize rb-tree */
+extern void     rb_init(rb_tree_t *tree);
+
+/* ...insert node into tree as a child of p */
+extern void     rb_insert(rb_tree_t *tree, rb_idx_t n_idx, rb_idx_t p_idx);
+
+/* ...replace the node with same-key value and fixup tree pointers */
+extern void     rb_replace(rb_tree_t *tree, rb_idx_t n_idx, rb_idx_t t_idx);
+
+/* ...delete node from the tree and return its in-order predecessor/successor */
+extern rb_idx_t rb_delete(rb_tree_t *tree, rb_idx_t n_idx);
+
+/* ...first in-order item in the tree */
+extern rb_idx_t rb_first(rb_tree_t *tree);
+
+/* ...last in-order item in the tree */
+extern rb_idx_t rb_last(rb_tree_t *tree);
+
+/* ...forward tree iterator */
+extern rb_idx_t rb_next(rb_tree_t *tree, rb_idx_t n_idx);
+
+/* ...backward tree iterator */
+extern rb_idx_t rb_prev(rb_tree_t *tree, rb_idx_t n_idx);
+
+#endif  /* __RBTREE_H */
diff --git a/hifi/xaf/hifi-dpf/include/lib/tinyput.h b/hifi/xaf/hifi-dpf/include/lib/tinyput.h
new file mode 100644
index 0000000..dadd088
--- /dev/null
+++ b/hifi/xaf/hifi-dpf/include/lib/tinyput.h
@@ -0,0 +1,31 @@
+/*******************************************************************************
+* Copyright (C) 2018 Cadence Design Systems, Inc.
+* 
+* Permission is hereby granted, free of charge, to any person obtaining
+* a copy of this software and associated documentation files (the
+* "Software"), to use this Software with Cadence processor cores only and 
+* not with any other processors and platforms, subject to
+* the following conditions:
+* 
+* The above copyright notice and this permission notice shall be included
+* in all copies or substantial portions of the Software.
+* 
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+******************************************************************************/
+
+/* $Id: //depot/dev/Cottonwood/Xtensa/OS/mpg2/tinyput.h#2 $ */
+
+#include <stdarg.h>
+
+extern void tiny_putc(char c);
+extern int  tiny_puts(const char *s);
+extern int  tiny_atoi(const char *s);
+extern int  tiny_vsprintf(char *out, const char *fmt, va_list ap);
+extern int  tiny_sprintf(char *out, const char *fmt, ...);
diff --git a/hifi/xaf/hifi-dpf/include/sys/xt-shmem/board-hikey/arch_hifi330.h b/hifi/xaf/hifi-dpf/include/sys/xt-shmem/board-hikey/arch_hifi330.h
new file mode 100644
index 0000000..74b1222
--- /dev/null
+++ b/hifi/xaf/hifi-dpf/include/sys/xt-shmem/board-hikey/arch_hifi330.h
@@ -0,0 +1,134 @@
+/*******************************************************************************
+* Copyright (C) 2018 Cadence Design Systems, Inc.
+* 
+* Permission is hereby granted, free of charge, to any person obtaining
+* a copy of this software and associated documentation files (the
+* "Software"), to use this Software with Cadence processor cores only and 
+* not with any other processors and platforms, subject to
+* the following conditions:
+* 
+* The above copyright notice and this permission notice shall be included
+* in all copies or substantial portions of the Software.
+* 
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+******************************************************************************/
+
+#include <xtensa/simcall.h>
+#include <xtensa/corebits.h>
+#include <xtensa/config/system.h>
+#include <xtensa/config/core.h>
+
+#ifndef __ARCH_HIFI330_H__
+#define __ARCH_HIFI330_H__
+
+#ifdef __ASSEMBLER__
+#include    <xtensa/coreasm.h>
+#endif
+
+#include    <xtensa/corebits.h>
+#include    <xtensa/config/system.h>
+
+/*
+Align a value up to nearest n-byte boundary, where n is a power of 2.
+*/
+#define ALIGNUP(n, val) (((val) + (n)-1) & -(n))
+
+
+/*******************************************************************************
+INTERRUPT STACK FRAME FOR A THREAD OR NESTED INTERRUPT
+*******************************************************************************/
+#define XT_STK_EXIT             0x00    /* (offset 0) exit point for dispatch */
+#define XT_STK_PC               0x04    /* return address */
+#define XT_STK_PS               0x08    /* at level 1 PS.EXCM is set here */
+#define XT_STK_A0               0x0C
+#define XT_STK_A1               0x10    /* stack ptr before interrupt */
+#define XT_STK_A2               0x14
+#define XT_STK_A3               0x18
+#define XT_STK_A4               0x1C
+#define XT_STK_A5               0x20
+#define XT_STK_A6               0x24
+#define XT_STK_A7               0x28
+#define XT_STK_A8               0x2C
+#define XT_STK_A9               0x30
+#define XT_STK_A10              0x34
+#define XT_STK_A11              0x38
+#define XT_STK_A12              0x3C    /* Call0 callee-save */
+#define XT_STK_A13              0x40    /* Call0 callee-save */
+#define XT_STK_A14              0x44    /* Call0 callee-save */
+#define XT_STK_A15              0x48    /* Call0 callee-save */
+#define XT_STK_SAR              0x4C
+
+#define XT_STK_LBEG             0x50
+#define XT_STK_LEND             0x54
+#define XT_STK_LCOUNT           0x58
+#define XT_STK_NEXT1            0x5C    /* next unused offset */
+
+#define XT_STK_EXTRA            ALIGNUP(XCHAL_EXTRA_SA_ALIGN, XT_STK_NEXT1)
+
+#define XT_STK_NEXT2            (XT_STK_EXTRA    + XCHAL_EXTRA_SA_SIZE)
+
+#define XT_STK_N_TMP            3       /* # of 4-byte temp. slots */
+#define XT_STK_TMP              XT_STK_NEXT2
+#define XT_STK_NEXT3            XT_STK_TMP    + (4 * XT_STK_N_TMP)
+#define XT_STK_FRMSZ            (ALIGNUP(0x10, XT_STK_NEXT3) + 0x20)
+
+
+/*******************************************************************************
+SIMPLE STACK FRAME FOR A THREAD
+*******************************************************************************/
+#define XT_SOL_EXIT             XT_STK_EXIT /* code indicates solicited frame */
+#define XT_SOL_PC               0x04    /* return address (b30-31=callinc) */
+#define XT_SOL_PS               0x08
+#define XT_SOL_NEXT             0x0c    /* next unused offset */
+                                /* there may be some unused space here */
+#define XT_SOL_A0               ALIGNUP(0x10, XT_SOL_NEXT)
+#define XT_SOL_A1               XT_SOL_A0    + 4
+#define XT_SOL_A2               XT_SOL_A1    + 4
+#define XT_SOL_A3               XT_SOL_A2    + 4
+#define XT_SOL_FRMSZ            ALIGNUP(0x10, XT_SOL_A3)
+
+
+/*******************************************************************************
+CO-PROCESSOR STATE SAVE AREA FOR A THREAD
+*******************************************************************************/
+#define XT_CPENABLE 0
+#define XT_CPSTORED (XT_CPENABLE + 1)
+#define XT_CP0_SA   ALIGNUP(XCHAL_CP0_SA_ALIGN, XT_CPSTORED + 1)
+#define XT_CP1_SA   ALIGNUP(XCHAL_CP1_SA_ALIGN, XT_CP0_SA + XCHAL_CP0_SA_SIZE)
+#define XT_CP2_SA   ALIGNUP(XCHAL_CP2_SA_ALIGN, XT_CP1_SA + XCHAL_CP1_SA_SIZE)
+#define XT_CP3_SA   ALIGNUP(XCHAL_CP3_SA_ALIGN, XT_CP2_SA + XCHAL_CP2_SA_SIZE)
+#define XT_CP4_SA   ALIGNUP(XCHAL_CP4_SA_ALIGN, XT_CP3_SA + XCHAL_CP3_SA_SIZE)
+#define XT_CP5_SA   ALIGNUP(XCHAL_CP5_SA_ALIGN, XT_CP4_SA + XCHAL_CP4_SA_SIZE)
+#define XT_CP6_SA   ALIGNUP(XCHAL_CP6_SA_ALIGN, XT_CP5_SA + XCHAL_CP5_SA_SIZE)
+#define XT_CP7_SA   ALIGNUP(XCHAL_CP7_SA_ALIGN, XT_CP6_SA + XCHAL_CP6_SA_SIZE)
+#define XT_CP_SIZE  ALIGNUP(4                 , XT_CP7_SA + XCHAL_CP7_SA_SIZE)
+
+#ifdef __ASSEMBLER__
+/* Windowed */
+#define ENTRY(sz)     entry   sp, sz
+#define ENTRY0        entry   sp, 0x10
+#define RET(sz)       retw
+#define RET0          retw
+#endif
+
+#define XT_TICK_PER_SEC     100
+#define XT_RTOS_INT_ENTER   OS_IntEnter
+#define XT_RTOS_INT_EXIT    OS_IntExit
+#define XT_RTOS_CP_STATE    OS_GetTaskCoprocState
+
+#ifdef __ASSEMBLER__
+// typedef struct vos_tcb {
+#define OSTCBStkPtr             0x00    // OSTCBStkPtr
+#define OSTCBStkBottom          0x10    // StackAddress
+//...
+// } VOS_TCB;
+#endif /* __ASSEMBLER__ */
+
+#endif /* end of arch_balongV7r1.h */
diff --git a/hifi/xaf/hifi-dpf/include/sys/xt-shmem/board-hikey/cpu_c.h b/hifi/xaf/hifi-dpf/include/sys/xt-shmem/board-hikey/cpu_c.h
new file mode 100644
index 0000000..0cc0da9
--- /dev/null
+++ b/hifi/xaf/hifi-dpf/include/sys/xt-shmem/board-hikey/cpu_c.h
@@ -0,0 +1,109 @@
+/*******************************************************************************
+* Copyright (C) 2018 Cadence Design Systems, Inc.
+* 
+* Permission is hereby granted, free of charge, to any person obtaining
+* a copy of this software and associated documentation files (the
+* "Software"), to use this Software with Cadence processor cores only and 
+* not with any other processors and platforms, subject to
+* the following conditions:
+* 
+* The above copyright notice and this permission notice shall be included
+* in all copies or substantial portions of the Software.
+* 
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+******************************************************************************/
+
+#ifndef __CPU_C_H__
+#define __CPU_C_H__
+
+enum OS_HOOK_TYPE_ENUM
+{
+    OS_HOOK_TYPE_ENTER_INTR=0,
+    OS_HOOK_TYPE_EXIT_INTR,
+    OS_HOOK_TYPE_TASK_SWITCH,
+    OS_HOOK_TYPE_MSG_GET,
+    OS_HOOK_TYPE_NMI,
+    OS_HOOK_TYPE_EXCEPTION,
+    OS_HOOK_TYPE_APPINIT,
+    OS_HOOK_TYPE_IDLE,
+    OS_HOOK_TYPE_BUTT
+};
+
+enum OS_INTR_CONNECT_TYPE_ENUM
+{
+    OS_INTR_CONNECT_00=0,        /*Int 0   type / priority level NMI / 6          */
+    OS_INTR_CONNECT_01,          /*Int 1   type / priority level Software / 3  */
+    OS_INTR_CONNECT_02,          /*Int 2   type / priority level ExtLevel / 2  */
+    OS_INTR_CONNECT_03,          /*Int 3   type / priority level ExtLevel / 2  */
+    OS_INTR_CONNECT_04,          /*Int 4   type / priority level ExtLevel / 2  */
+    OS_INTR_CONNECT_05,          /*Int 5   type / priority level Timer / 3     */
+    OS_INTR_CONNECT_06,          /*Int 6   type / priority level Timer / 4     */
+    OS_INTR_CONNECT_07,          /*Int 7   type / priority level ExtLevel / 3  */
+    OS_INTR_CONNECT_08,          /*Int 8   type / priority level ExtLevel / 3  */
+    OS_INTR_CONNECT_09,          /*Int 9   type / priority level ExtLevel / 3  */
+    OS_INTR_CONNECT_10,          /*Int 10   type / priority level ExtLevel / 2 */
+    OS_INTR_CONNECT_11,          /*Int 11   type / priority level ExtLevel / 2 */
+    OS_INTR_CONNECT_12,          /*Int 12   type / priority level ExtLevel / 2 */
+    OS_INTR_CONNECT_13,          /*Int 13   type / priority level ExtLevel / 2 */
+    OS_INTR_CONNECT_14,          /*Int 14   type / priority level ExtLevel / 2 */
+    OS_INTR_CONNECT_15,          /*Int 15   type / priority level ExtLevel / 1 */
+    OS_INTR_CONNECT_16,          /*Int 16   type / priority level ExtLevel / 1 */
+    OS_INTR_CONNECT_17,          /*Int 17   type / priority level ExtLevel / 1 */
+    OS_INTR_CONNECT_18,          /*Int 18   type / priority level ExtLevel / 1 */
+    OS_INTR_CONNECT_19,          /*Int 19   type / priority level Timer / 2    */
+    OS_INTR_CONNECT_20,          /*Int 20   type / priority level ExtLevel / 1 */
+    OS_INTR_CONNECT_21,          /*Int 21   type / priority level ExtLevel / 1 */
+    OS_INTR_CONNECT_22,          /*Int 22   type / priority level ExtLevel / 1 */
+    OS_INTR_CONNECT_23,          /*Int 23   type / priority level ExtLevel / 1 */
+    OS_INTR_CONNECT_24,          /*Int 24   type / priority level ExtLevel / 1 */
+    OS_INTR_CONNECT_25,          /*Int 25   type / priority level ExtLevel / 1 */
+    OS_INTR_CONNECT_26,          /*Int 26   type / priority level ExtLevel / 1 */
+    OS_INTR_CONNECT_27,          /*Int 27   type / priority level ExtLevel / 1 */
+    OS_INTR_CONNECT_28,          /*Int 28   type / priority level ExtLevel / 1 */
+    OS_INTR_CONNECT_29,          /*Int 29   type / priority level ExtLevel / 1 */
+    OS_INTR_CONNECT_30,          /*Int 30   type / priority level ExtLevel / 1 */
+    OS_INTR_CONNECT_31,          /*Int 31   type / priority level ExtEdge / 1  */
+    OS_INTR_CONNECT_BUTT
+};
+
+#define UCOM_SET_WFI_NMI(var1)          asm ("waiti 5": :)
+
+#define UCOM_FlushCache(pAddr, uwSize)      \
+    xthal_dcache_region_writeback(pAddr, uwSize)
+
+#define UCOM_FlushCacheAll()      \
+    xthal_dcache_all_writeback()
+
+#define UCOM_InvalidateCache(pAddr, uwSize)      \
+    xthal_dcache_region_invalidate(pAddr, uwSize)
+
+#define UCOM_InvalidateCacheAll()      \
+    xthal_dcache_all_invalidate()
+
+#define ADD_TAG asm("movi a1, 0xdeadbaaf \n movi a2, 0xe8075e80 \n s32i a1, a2, 0": :)
+
+//typedef void (*HOOK_FUN_TYPE)(void);
+typedef void (*HOOK_FUN_TYPE)(unsigned int);
+
+typedef void  (*INTR_HOOK_FUN_TYPE )(unsigned int uwIntNo);
+
+typedef void (*VOS_EXCEPTION_HOOK_FUNC)( unsigned int uwExceptionNo);
+
+extern void *g_pfVosHookFuncTable[OS_HOOK_TYPE_BUTT];
+
+extern void VOS_ConnectInterrupt(unsigned int uwIntrNo, HOOK_FUN_TYPE pfnInterruptHook);
+
+extern void VOS_EnableInterrupt(unsigned int uwIntNo);
+extern void VOS_DisableInterrupt(unsigned int uwIntNo);
+
+extern void  OS_UserExit(void);
+
+
+#endif /* end of cpu_c.h */
diff --git a/hifi/xaf/hifi-dpf/include/sys/xt-shmem/board-hikey/dsp_comm.h b/hifi/xaf/hifi-dpf/include/sys/xt-shmem/board-hikey/dsp_comm.h
new file mode 100644
index 0000000..3764677
--- /dev/null
+++ b/hifi/xaf/hifi-dpf/include/sys/xt-shmem/board-hikey/dsp_comm.h
@@ -0,0 +1,45 @@
+/*******************************************************************************
+* Copyright (C) 2018 Cadence Design Systems, Inc.
+* 
+* Permission is hereby granted, free of charge, to any person obtaining
+* a copy of this software and associated documentation files (the
+* "Software"), to use this Software with Cadence processor cores only and 
+* not with any other processors and platforms, subject to
+* the following conditions:
+* 
+* The above copyright notice and this permission notice shall be included
+* in all copies or substantial portions of the Software.
+* 
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+******************************************************************************/
+
+
+#ifndef __DSP_COMM_H__
+#define __DSP_COMM_H__
+
+#include <xtensa/config/core.h>
+#include <xtensa/simcall.h>
+
+#define DSP_FLUSH_PIECE_CACHE(addr, size) xthal_dcache_region_writeback(addr, size)
+#define DSP_FLUSH_ALL_CACHE() xthal_dcache_all_writeback()
+#define DSP_INVALIDATE_PIECE_CACHE(addr, size) xthal_dcache_region_invalidate(addr, size)
+#define DSP_INVALIDATE_ALL_CACHE() xthal_dcache_all_invalidate()
+
+#define memset(d,uCData,size) dsp_memset(d,uCData,size)
+#define memcpy(d,s,size) dsp_memcpy(d,s,size)
+#define divsi3(a,b) division(a,b)
+#define _divsi3(a,b) division(a,b)
+
+void dsp_memcpy(void *d, void *s, unsigned int size);
+void dsp_memset(void *d, unsigned char ucData, unsigned int size);
+int division(int a, int b);
+
+#endif /* end of dsp_comm.h */
+
diff --git a/hifi/xaf/hifi-dpf/include/sys/xt-shmem/board-hikey/dsp_debug.h b/hifi/xaf/hifi-dpf/include/sys/xt-shmem/board-hikey/dsp_debug.h
new file mode 100644
index 0000000..0ca2d37
--- /dev/null
+++ b/hifi/xaf/hifi-dpf/include/sys/xt-shmem/board-hikey/dsp_debug.h
@@ -0,0 +1,71 @@
+/*******************************************************************************
+* Copyright (C) 2018 Cadence Design Systems, Inc.
+* 
+* Permission is hereby granted, free of charge, to any person obtaining
+* a copy of this software and associated documentation files (the
+* "Software"), to use this Software with Cadence processor cores only and 
+* not with any other processors and platforms, subject to
+* the following conditions:
+* 
+* The above copyright notice and this permission notice shall be included
+* in all copies or substantial portions of the Software.
+* 
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+******************************************************************************/
+
+#ifndef __DSP_DEBUG_H__
+#define __DSP_DEBUG_H__
+
+ 
+#define DEBUG_LEVEL   0
+#define INFO_LEVEL    1
+#define WARNING_LEVEL 1
+#define ERROR_LEVEL   1
+#define TRACE_DUMP    1
+
+#define LOG_TAG " DSP_LOG"
+
+#if TRACE_DUMP
+#define DSP_TRACE(fmt, ...) print_log(fmt" @%s:%d \n", ##__VA_ARGS__, __FUNCTION__, __LINE__)
+#else
+#define DSP_TRACE(fmt, ...)
+#endif
+
+#if DEBUG_LEVEL
+#define DSP_LOGD(fmt, ...) print_log(LOG_TAG"[D]%s:%d: "fmt, __FUNCTION__, __LINE__, ##__VA_ARGS__)
+#else
+#define DSP_LOGD(fmt, ...)
+#endif
+
+#if INFO_LEVEL
+#define DSP_LOGI(fmt, ...) print_log(LOG_TAG"[I]%s:%d: "fmt, __FUNCTION__, __LINE__, ##__VA_ARGS__)
+#else
+#define DSP_LOGI(fmt, ...)
+#endif
+
+#if WARNING_LEVEL
+#define DSP_LOGW(fmt, ...) print_log(LOG_TAG"[W]%s:%d: "fmt, __FUNCTION__, __LINE__, ##__VA_ARGS__)
+#else
+#define DSP_LOGW(fmt, ...)
+#endif
+
+#if ERROR_LEVEL
+#define DSP_LOGE(fmt, ...) print_log(LOG_TAG"[E]%s:%d: "fmt, __FUNCTION__, __LINE__, ##__VA_ARGS__)
+#else
++#define DSP_LOGE(fmt, ...)
+#endif
+
+
+void print_log(const char *fmt, ...);
+void dsp_debug_init();
+#ifdef HIKEY_XAF_IPC_COMMENT_OUT
+void dsp_om_func_proc(char *om_str, unsigned int str_len);
+#endif
+#endif
diff --git a/hifi/xaf/hifi-dpf/include/sys/xt-shmem/board-hikey/dsp_driver_ipc.h b/hifi/xaf/hifi-dpf/include/sys/xt-shmem/board-hikey/dsp_driver_ipc.h
new file mode 100644
index 0000000..2228f32
--- /dev/null
+++ b/hifi/xaf/hifi-dpf/include/sys/xt-shmem/board-hikey/dsp_driver_ipc.h
@@ -0,0 +1,61 @@
+/*******************************************************************************
+* Copyright (C) 2018 Cadence Design Systems, Inc.
+* 
+* Permission is hereby granted, free of charge, to any person obtaining
+* a copy of this software and associated documentation files (the
+* "Software"), to use this Software with Cadence processor cores only and 
+* not with any other processors and platforms, subject to
+* the following conditions:
+* 
+* The above copyright notice and this permission notice shall be included
+* in all copies or substantial portions of the Software.
+* 
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+******************************************************************************/
+
+#ifndef __DSP_DRIVER_IPC_H__
+#define __DSP_DRIVER_IPC_H__
+
+#if 0
+#define DSP_IPC_FROM_AP_INT_NO     (3)
+#define DSP_SYS_IPC_BASE_ADDR_NS   (0xe896b000)
+#define DSP_AP_TO_DSP_MAILBOX_NO   (18)
+#define DSP_DSP_TO_AP_MAILBOX_NO   (2)
+#define IPC_BUSY_RETRY_COUNT       (1000)
+#define IPC_ACPU_INT_SRC_HIFI_MSG  (1)
+#define BIT_MASK(n) (1 << (n))
+
+#define WORD_REF(address) (* ((unsigned int volatile *) (address)))
+
+#define SYS_IPC_LOCK(base)                  WORD_REF(base + 0xA00)
+#define SYS_IPC_ICLR(base, box)             WORD_REF(base + ((box) << 6) + 0x18)
+#define SYS_IPC_DATA(base, box, num)        WORD_REF(base + ((box) << 6) + 0x20 + ((num) << 2))
+#define SYS_IPC_CPUIRST(base, core)         WORD_REF(base + 0x804 + ((core) << 3))
+#define SYS_IPC_MODE(base, box)             WORD_REF(base + ((box) << 6) + 0x10)
+#define SYS_IPC_SOURCE(base, box)           WORD_REF(base + ((box) << 6))
+#define SYS_IPC_DEST(base, box)             WORD_REF(base + ((box) * 64) + 0x04)
+#define SYS_IPC_SEND(base, box)             WORD_REF(base + ((box) << 6) + 0x1c)
+#define SYS_IPC_IMASK(base, box)            WORD_REF(base + ((box) << 6) + 0x14)
+#define SYS_IPC_DCLR(base, box)             WORD_REF(base + ((box) * 64) + 0x08)
+#define SYS_IPC_CPUIMST(base, core)         WORD_REF(base + 0x800 + ((core) * 8))
+#define SYS_IPC_MODE_ACK     (7)
+#define SYS_IPC_MODE_IDLE    (4)
+#define SYS_IPC_MODE_AUTOACK (0)
+
+#define SYS_IPC_CORE_HIFI  (4)
+#define SYS_IPC_CORE_A15   (0)
+#define SYS_IPC_CORE_LPM3  (3)
+#endif
+#if 0
+extern void dsp_ipc_init(void);
+extern void dsp_ipc_wait(void);
+#endif
+#endif
+
diff --git a/hifi/xaf/hifi-dpf/include/sys/xt-shmem/board-hikey/dsp_driver_mailbox.h b/hifi/xaf/hifi-dpf/include/sys/xt-shmem/board-hikey/dsp_driver_mailbox.h
new file mode 100644
index 0000000..5fdcca9
--- /dev/null
+++ b/hifi/xaf/hifi-dpf/include/sys/xt-shmem/board-hikey/dsp_driver_mailbox.h
@@ -0,0 +1,171 @@
+/*******************************************************************************
+* Copyright (C) 2018 Cadence Design Systems, Inc.
+* 
+* Permission is hereby granted, free of charge, to any person obtaining
+* a copy of this software and associated documentation files (the
+* "Software"), to use this Software with Cadence processor cores only and 
+* not with any other processors and platforms, subject to
+* the following conditions:
+* 
+* The above copyright notice and this permission notice shall be included
+* in all copies or substantial portions of the Software.
+* 
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+******************************************************************************/
+
+#ifndef __DSP_DRIVER_MAILBOX_H__
+#define __DSP_DRIVER_MAILBOX_H__
+
+#include <stdint.h>
+
+#define HIKEY_MSG_HEAD_PROTECT_WORD 0xffff1234
+#define HIKEY_MSG_BODY_PROTECT_WORD 0xffff4321
+
+#define	HIKEY_MSG_ID_AP_DSP_OM_CMD 0xDDCB
+#define HIKEY_AUDIO_DSP_AP_OM_CMD   0xDDC9
+
+typedef enum HIFI_MSG_ID_ {
+
+	/*DTS command id from ap*/
+	ID_AP_AUDIO_SET_DTS_ENABLE_CMD			= 0xDD36,
+	ID_AP_AUDIO_SET_DTS_DEV_CMD			= 0xDD38,
+	ID_AP_AUDIO_SET_DTS_GEQ_CMD			= 0xDD39,
+	ID_AP_AUDIO_SET_DTS_GEQ_ENABLE_CMD		= 0xDD3B,
+
+	/* APºÍHIFIµÄ¿ØÖÆÍâÖÃ¶ú»úHIFI codecœ»»¥ÏûÏ¢ */
+	ID_AP_AUDIO_SET_EXCODEC_ENABLE_CMD		= 0xDD3D,
+
+	/* Voice Record */
+	ID_AP_HIFI_VOICE_RECORD_START_CMD		= 0xDD40,
+	ID_AP_HIFI_VOICE_RECORD_STOP_CMD		= 0xDD41,
+
+	/* voicePP MSG_ID */
+	ID_AP_VOICEPP_START_REQ				= 0xDD42,						/* Æô¶¯VOICEPPÍš»° */
+	ID_VOICEPP_MSG_START				= ID_AP_VOICEPP_START_REQ,
+	ID_VOICEPP_AP_START_CNF				= 0xDD43,
+	ID_AP_VOICEPP_STOP_REQ				= 0xDD44,						/* ÖÕÖ¹VOICEPPÍš»° */
+	ID_VOICEPP_AP_STOP_CNF				= 0xDD45,
+	ID_VOICEPP_MSG_END				= 0xDD4A,
+
+	ID_AP_AUDIO_PLAY_START_REQ			= 0xDD51,/* APÆô¶¯Hifi audio player requestÃüÁî */
+	ID_AUDIO_AP_PLAY_START_CNF			= 0xDD52,/* HifiÆô¶¯audio playerºó»ØžŽAP confirmÃüÁî */
+	ID_AP_AUDIO_PLAY_PAUSE_REQ			= 0xDD53,/* APÍ£Ö¹Hifi audio player requestÃüÁî */
+	ID_AUDIO_AP_PLAY_PAUSE_CNF			= 0xDD54,/* HifiÍ£Ö¹audio playerºó»ØžŽAP confirmÃüÁî */
+	ID_AUDIO_AP_PLAY_DONE_IND			= 0xDD56,/* HifiÍšÖªAP audio playerÒ»¿éÊýŸÝ²¥·ÅÍê±Ï»òÕß²¥·ÅÖÐ¶Ïindication */
+	ID_AP_AUDIO_PLAY_UPDATE_BUF_CMD			= 0xDD57,/* APÍšÖªHifiÐÂÊýŸÝ¿éžüÐÂcommand */
+	ID_AP_AUDIO_PLAY_QUERY_TIME_REQ			= 0xDD59,/* AP²éÑ¯Hifi audio player²¥·Åœø¶ÈrequestÃüÁî */
+	ID_AP_AUDIO_PLAY_WAKEUPTHREAD_REQ		= 0xDD5A,
+	ID_AUDIO_AP_PLAY_QUERY_TIME_CNF			= 0xDD60,/* Hifi»ØžŽAP audio player²¥·Åœø¶ÈconfirmÃüÁî */
+	ID_AP_AUDIO_PLAY_QUERY_STATUS_REQ		= 0xDD61,/* AP²éÑ¯Hifi audio player²¥·Å×ŽÌ¬requestÃüÁî */
+	ID_AUDIO_AP_PLAY_QUERY_STATUS_CNF		= 0xDD62,/* Hifi»ØžŽAP audio player²¥·Å×ŽÌ¬confirmÃüÁî */
+	ID_AP_AUDIO_PLAY_SEEK_REQ			= 0xDD63,/* AP seek Hifi audio playerµœÄ³Ò»Î»ÖÃrequestÃüÁî */
+	ID_AUDIO_AP_PLAY_SEEK_CNF			= 0xDD64,/* Hifi»ØžŽAP seekœá¹ûconfirmÃüÁî */
+	ID_AP_AUDIO_PLAY_SET_VOL_CMD			= 0xDD70,/* APÉèÖÃÒôÁ¿ÃüÁî */
+	ID_AP_AUDIO_RECORD_PCM_HOOK_CMD			= 0xDD7A,/* AP ÍšÖªHIFI¿ªÊŒ×¥È¡PCMÊýŸÝ */
+	ID_AUDIO_AP_UPDATE_PCM_BUFF_CMD			= 0xDD7C,
+	ID_AP_AUDIO_DYN_EFFECT_GET_PARAM		= 0xDD7D,
+	ID_AP_AUDIO_DYN_EFFECT_GET_PARAM_CNF		= 0xDD7E,
+	ID_AP_AUDIO_DYN_EFFECT_TRIGGER			= 0xDD7F,
+	/* enhance msgid between ap and hifi */
+	ID_AP_HIFI_ENHANCE_START_REQ			= 0xDD81,
+	ID_HIFI_AP_ENHANCE_START_CNF			= 0xDD82,
+	ID_AP_HIFI_ENHANCE_STOP_REQ			= 0xDD83,
+	ID_HIFI_AP_ENHANCE_STOP_CNF			= 0xDD84,
+	ID_AP_HIFI_ENHANCE_SET_DEVICE_REQ		= 0xDD85,
+	ID_HIFI_AP_ENHANCE_SET_DEVICE_CNF		= 0xDD86,
+
+	/* audio enhance msgid between ap and hifi */
+	ID_AP_AUDIO_ENHANCE_SET_DEVICE_IND		= 0xDD91,
+	ID_AP_AUDIO_MLIB_SET_PARA_IND			= 0xDD92,
+	ID_AP_AUDIO_CMD_SET_SOURCE_CMD			= 0xDD95,
+	ID_AP_AUDIO_CMD_SET_DEVICE_CMD			= 0xDD96,
+	ID_AP_AUDIO_CMD_SET_MODE_CMD			= 0xDD97,
+	ID_AP_AUDIO_CMD_SET_ANGLE_CMD			= 0xDD99,
+
+	/* for 3mic */
+	ID_AP_AUDIO_ROUTING_COMPLETE_REQ		= 0xDDC0,/*AP ÍšÖªHIFI 3Mic/4Mic ÍšÂ·ÒÑœšÁ¢*/
+	ID_AUDIO_AP_DP_CLK_EN_IND			= 0xDDC1,/* HIFI ÍšÖªAºËŽò¿ª»ò¹Ø±ÕCodec DPÊ±ÖÓ */
+	ID_AP_AUDIO_DP_CLK_STATE_IND			= 0xDDC2,/* AºËÍšÖªHIFI £¬Codec DPÊ±ÖÓ×ŽÌ¬( Žò¿ª»ò¹Ø±Õ) */
+	ID_AUDIO_AP_OM_DUMP_CMD				= 0xDDC3,/* HIFI ÍšÖªAºËdumpÈÕÖŸ */
+	ID_AUDIO_AP_FADE_OUT_REQ			= 0xDDC4,/* HIFIÍšÖªAP×öµ­³öŽŠÀí */
+	ID_AP_AUDIO_FADE_OUT_IND			= 0xDDC5,/* APÍšÖªHIFIµ­³öÍê±Ï */
+
+	ID_AUDIO_AP_OM_CMD				= 0xDDC9,
+	ID_AP_AUDIO_STR_CMD				= 0xDDCB,/* APžøHIFI·¢ËÍÒ»žö×Ö·ûŽ®£¬ŸßÌåº¬ÒåhifiÖÐœâÎö */
+	ID_AUDIO_AP_VOICE_BSD_PARAM_CMD			= 0xDDCC,/* VOICE BSD ²ÎÊýÉÏ±š */
+
+	ID_AP_ENABLE_MODEM_LOOP_REQ			= 0xDDCD,/* the audio hal notify HIFI to start/stop  MODEM LOOP*/
+	ID_AP_HIFI_REQUEST_VOICE_PARA_REQ		= 0xDF00, /*AP REQUEST VOICE MSG*/
+	ID_HIFI_AP_REQUEST_VOICE_PARA_CNF		= 0xDF01, /*HIFI REPLAY VOICE MSG*/
+
+	/* XAF message IDs */
+    ID_XAF_AP_TO_DSP                    = 0xDF10,
+    ID_XAF_DSP_TO_AP                    = 0xDF11,
+} HIFI_MSG_ID;
+
+#define HIKEY_AP2DSP_MSG_QUEUE_ADDR HIFI_HIKEY_SHARE_MEM_ADDR
+
+#define HIKEY_AP2DSP_MSG_QUEUE_SIZE 0x1800
+#define HIKEY_DSP2AP_MSG_QUEUE_ADDR (HIKEY_AP2DSP_MSG_QUEUE_ADDR + HIKEY_AP2DSP_MSG_QUEUE_SIZE)
+#define HIKEY_DSP2AP_MSG_QUEUE_SIZE 0x1800
+
+#define HIKEY_AP_DSP_MSG_MAX_LEN 100
+/////////////////////////////////////////////////////////////////////
+//    XAF STRUCTURES                                               //
+/////////////////////////////////////////////////////////////////////
+#ifdef GJB_CHANGE
+/* ...command/response message */
+typedef struct xf_proxy_msg {
+	/* ...session ID */
+	uint32_t                 id;
+
+	/* ...proxy API command/reponse code */
+	uint32_t                 opcode;
+
+	/* ...length of attached buffer */
+	uint32_t                 length;
+
+	/* ...physical address of message buffer */
+	uint64_t                 address;
+	uint64_t                 v_address;
+
+}	__attribute__((__packed__)) xf_proxy_msg_t;
+
+struct hikey_ap_dsp_msg_head {
+	unsigned int head_protect_word;
+	unsigned int msg_num;
+	unsigned int read_pos;
+	unsigned int write_pos;
+};
+
+/*struct hikey_ap_dsp_msg_body {
+	unsigned short msg_id;
+	unsigned short msg_len;
+	char msg_content[0];
+};*/
+
+struct hikey_ap_dsp_msg_body {
+	unsigned short msg_id;
+	unsigned short msg_len;
+    union {
+	    char msg_content[0];
+        struct xf_proxy_msg xf_dsp_msg;
+    };
+};
+struct hikey_msg_with_content {
+	struct hikey_ap_dsp_msg_body msg_info;
+	char msg_content[HIKEY_AP_DSP_MSG_MAX_LEN];
+};
+void dsp_init_share_mem(char *share_mem_addr, unsigned int share_mem_size);
+int dsp_mailbox_read(struct hikey_msg_with_content *hikey_msg);
+void dsp_msg_process(struct hikey_msg_with_content *hikey_msg);
+#else
+#endif
+#endif
diff --git a/hifi/xaf/hifi-dpf/include/sys/xt-shmem/board-hikey/dsp_memory_config.h b/hifi/xaf/hifi-dpf/include/sys/xt-shmem/board-hikey/dsp_memory_config.h
new file mode 100644
index 0000000..fd5a93d
--- /dev/null
+++ b/hifi/xaf/hifi-dpf/include/sys/xt-shmem/board-hikey/dsp_memory_config.h
@@ -0,0 +1,96 @@
+/*******************************************************************************
+* Copyright (C) 2018 Cadence Design Systems, Inc.
+* 
+* Permission is hereby granted, free of charge, to any person obtaining
+* a copy of this software and associated documentation files (the
+* "Software"), to use this Software with Cadence processor cores only and 
+* not with any other processors and platforms, subject to
+* the following conditions:
+* 
+* The above copyright notice and this permission notice shall be included
+* in all copies or substantial portions of the Software.
+* 
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+******************************************************************************/
+
+#ifndef __DSP_MEMORY_CONFIG_H__
+#define __DSP_MEMORY_CONFIG_H__
+
+/** for chicago only **/
+/**Non Secure 3.5M **/
+/* |0x8B300000|0x8B432000|0x8B532000|0x8B5B1000|0x8B5B2000|0x8B5C5000|0x8B5C6000|0x8B5C7000|0x8B5F9800|~~0x8B609800~~|~~0x8B618800~~|~0x8B618880~|0x8B627880|~0x8B629880~|0x8B62C880~~~| */
+/* |Music data|~~PCM data|~hifi uart|panicstack|icc debug~|flag data~|DDRsechead|~~AP NV ~~|AP&HIFIMB~|codec dma buff|codecdmaconfig|soundtrigger|pcm upload|~hikey share|unsec reserve| */
+/* |~~~~1.2M~~|~~~~1M~~~~|~~508k~~~~|~~~~~4k~~~|~~76k~~~~~|~~~4k~~~~~|~~~4k~~~~~|~~202k~~~~|~~~64k~~~~|~~~~60k~~~~~~~|~~~~128b~~~~~~|~~~~60k~~~~~|~~~8k~~~~~|~~~~~12k~~~~|~~334k-128b~~| */
+/* |0x8B431fff|0x8B531fff|0x8B5B0fff|0x8B5B1fff|0x8B5C4fff|0x8B5C5fff|0x8B5C6fff|0x8B5F97ff|0x8B6097ff|~~0x8B6187FF~~|~~0x8B61887F~~|~0x8B62787F~|0x8B62987F|0x8B62C87F~~|~~0x8B67FFFF~| */
+
+/** Secure9.5M **/
+/* |~~~0x89200000~~~|~~~0x89800000~~~|~~~0x89830000~~|~~~0x89864000~~~| */
+/* |~~HIFI RUNNING~~|~OCRAM img bak~~|~~TCM img bak~~|~~~~IMG bak~~~~~| */
+/* |~~~~~~~6M~~~~~~~|~~~~~~192K~~~~~~|~~~~~208k~~~~~~|~~~~~~3.1M ~~~~~| */
+/* |~~~0x897fffff~~~|~~~0x8982ffff~~~|~~~0x89863fff~~|~~~0x89B80000~~~| */
+
+ 
+#define HIFI_UNSEC_REGION_SIZE              (0x380000)
+#define HIFI_MUSIC_DATA_SIZE                (0x132000)
+#define PCM_PLAY_BUFF_SIZE                  (0x100000)
+#define DRV_DSP_UART_TO_MEM_SIZE            (0x7f000)
+#define DRV_DSP_UART_TO_MEM_RESERVE_SIZE    (0x100)
+#define DRV_DSP_STACK_TO_MEM_SIZE           (0x1000)
+#define HIFI_ICC_DEBUG_SIZE                 (0x13000)
+#define HIFI_FLAG_DATA_SIZE                 (0x1000)
+#define HIFI_SEC_HEAD_SIZE                  (0x1000)
+#define HIFI_AP_NV_DATA_SIZE                (0x32800)
+#define HIFI_AP_MAILBOX_TOTAL_SIZE          (0x10000)
+#define CODEC_DSP_OM_DMA_BUFFER_SIZE        (0xF000)
+#define CODEC_DSP_OM_DMA_CONFIG_SIZE        (0x80)
+#define CODEC_DSP_SOUNDTRIGGER_TOTAL_SIZE   (0xF000)
+#define HIFI_PCM_UPLOAD_BUFFER_SIZE         (0x2000)
+#define HIFI_HIKEY_SHARE_SIZE               (0x1800 * 2)
+#define HIFI_UNSEC_RESERVE_SIZE             (0x53780)
+
+#define HIFI_UNSEC_BASE_ADDR                (0x8B300000)
+#define HIFI_MUSIC_DATA_LOCATION        (HIFI_UNSEC_BASE_ADDR)
+#define PCM_PLAY_BUFF_LOCATION          (HIFI_MUSIC_DATA_LOCATION + HIFI_MUSIC_DATA_SIZE)
+#define DRV_DSP_UART_TO_MEM             (PCM_PLAY_BUFF_LOCATION + PCM_PLAY_BUFF_SIZE)
+#define DRV_DSP_STACK_TO_MEM            (DRV_DSP_UART_TO_MEM + DRV_DSP_UART_TO_MEM_SIZE)
+#define HIFI_ICC_DEBUG_LOCATION         (DRV_DSP_STACK_TO_MEM + DRV_DSP_STACK_TO_MEM_SIZE)
+#define HIFI_FLAG_DATA_ADDR             (HIFI_ICC_DEBUG_LOCATION + HIFI_ICC_DEBUG_SIZE)
+#define HIFI_SEC_HEAD_BACKUP            (HIFI_FLAG_DATA_ADDR + HIFI_FLAG_DATA_SIZE)
+#define HIFI_AP_NV_DATA_ADDR            (HIFI_SEC_HEAD_BACKUP + HIFI_SEC_HEAD_SIZE)
+#define HIFI_AP_MAILBOX_BASE_ADDR       (HIFI_AP_NV_DATA_ADDR + HIFI_AP_NV_DATA_SIZE)
+#define CODEC_DSP_OM_DMA_BUFFER_ADDR    (HIFI_AP_MAILBOX_BASE_ADDR + HIFI_AP_MAILBOX_TOTAL_SIZE)
+#define CODEC_DSP_OM_DMA_CONFIG_ADDR    (CODEC_DSP_OM_DMA_BUFFER_ADDR + CODEC_DSP_OM_DMA_BUFFER_SIZE)
+#define CODEC_DSP_SOUNDTRIGGER_BASE_ADDR (CODEC_DSP_OM_DMA_CONFIG_ADDR + CODEC_DSP_OM_DMA_CONFIG_SIZE)
+#define HIFI_PCM_UPLOAD_BUFFER_ADDR     (CODEC_DSP_SOUNDTRIGGER_BASE_ADDR + CODEC_DSP_SOUNDTRIGGER_TOTAL_SIZE)
+#define HIFI_HIKEY_SHARE_MEM_ADDR       (HIFI_PCM_UPLOAD_BUFFER_ADDR+HIFI_AP_MAILBOX_TOTAL_SIZE)
+#define HIFI_UNSEC_RESERVE_ADDR         (HIFI_HIKEY_SHARE_MEM_ADDR + HIFI_HIKEY_SHARE_SIZE)
+
+#define DRV_DSP_PANIC_MARK              (HIFI_FLAG_DATA_ADDR)
+#define DRV_DSP_UART_LOG_LEVEL          (DRV_DSP_PANIC_MARK + 4)
+#define DRV_DSP_UART_TO_MEM_CUR_ADDR    (DRV_DSP_UART_LOG_LEVEL + 4)
+
+#define HIFI_SEC_REGION_SIZE            (0x980000)
+#define HIFI_IMAGE_OCRAMBAK_SIZE        (0x30000)
+#define HIFI_RUN_SIZE                   (0x600000)
+#define HIFI_IMAGE_TCMBAK_SIZE          (0x34000)
+#define HIFI_IMAGE_SIZE                 (0x31C000)
+#define HIFI_RUN_ITCM_BASE              (0xe8080000)
+#define HIFI_RUN_ITCM_SIZE              (0x9000)
+#define HIFI_RUN_DTCM_BASE              (0xe8058000)
+#define HIFI_RUN_DTCM_SIZE              (0x28000)
+
+ 
+#define HIFI_SEC_REGION_ADDR            (0x89200000) /* chciago */
+#define HIFI_RUN_LOCATION               (HIFI_SEC_REGION_ADDR)
+#define HIFI_IMAGE_OCRAMBAK_LOCATION    (HIFI_RUN_LOCATION + HIFI_RUN_SIZE)
+#define HIFI_IMAGE_TCMBAK_LOCATION      (HIFI_IMAGE_OCRAMBAK_LOCATION + HIFI_IMAGE_OCRAMBAK_SIZE)
+#define HIFI_IMAGE_LOCATION             (HIFI_IMAGE_TCMBAK_LOCATION + HIFI_IMAGE_TCMBAK_SIZE)
+
+#endif
diff --git a/hifi/xaf/hifi-dpf/include/sys/xt-shmem/board-hikey/dsp_pcm_gain.h b/hifi/xaf/hifi-dpf/include/sys/xt-shmem/board-hikey/dsp_pcm_gain.h
new file mode 100644
index 0000000..24f94ec
--- /dev/null
+++ b/hifi/xaf/hifi-dpf/include/sys/xt-shmem/board-hikey/dsp_pcm_gain.h
@@ -0,0 +1,37 @@
+/*******************************************************************************
+* Copyright (C) 2018 Cadence Design Systems, Inc.
+* 
+* Permission is hereby granted, free of charge, to any person obtaining
+* a copy of this software and associated documentation files (the
+* "Software"), to use this Software with Cadence processor cores only and 
+* not with any other processors and platforms, subject to
+* the following conditions:
+* 
+* The above copyright notice and this permission notice shall be included
+* in all copies or substantial portions of the Software.
+* 
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+******************************************************************************/
+
+#ifndef DSP_PCM_GAIN_H
+#define __DSP_PCM_GAIN_H__
+#include "dsp_memory_config.h"
+#define FRAME_SIZE		 480					//  10 ms @ 48 KHz.
+#define HOLD_BUF_SIZE  228404
+#define 	MSG_RECV	1		//  Msg received
+#define 	MSG_PROC	2		//  Msg processed.
+#define     MSG_COMP    8
+#define     MSG_INCOMP  9
+#define MUSIC_DATA_MEM_READ_ADDR		HIFI_MUSIC_DATA_LOCATION //  Address of the Music data memory..   !!! change this if necessary..
+#define PCM_DATA_MEM_WRITE_ADDR		PCM_PLAY_BUFF_LOCATION		//  Address of some random element in PCM data memory..   !!! change this if necessary..
+int ReadData( char *pDst,  int Size );
+int WriteData( char *pSrc,  int Size );
+int processAudio( int *pDst,  int *pSrc,  int Size );
+#endif
diff --git a/hifi/xaf/hifi-dpf/include/sys/xt-shmem/board-hikey/reset.h b/hifi/xaf/hifi-dpf/include/sys/xt-shmem/board-hikey/reset.h
new file mode 100644
index 0000000..5a77a97
--- /dev/null
+++ b/hifi/xaf/hifi-dpf/include/sys/xt-shmem/board-hikey/reset.h
@@ -0,0 +1,62 @@
+/*******************************************************************************
+* Copyright (C) 2018 Cadence Design Systems, Inc.
+* 
+* Permission is hereby granted, free of charge, to any person obtaining
+* a copy of this software and associated documentation files (the
+* "Software"), to use this Software with Cadence processor cores only and 
+* not with any other processors and platforms, subject to
+* the following conditions:
+* 
+* The above copyright notice and this permission notice shall be included
+* in all copies or substantial portions of the Software.
+* 
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+******************************************************************************/
+
+
+#include <xtensa/coreasm.h>
+#include <xtensa/simcall.h>
+#define PIF_CACHED  1
+#define PIF_BYPASS  2
+#define PIF_CACHED_WBA   4
+#define PIF_CACHED_WBNA  5
+#define PIF_INVALID 15
+
+#ifdef __cplusplus
+#if __cplusplus
+extern "C" {
+#endif
+#endif
+
+
+
+/*set memory mapping attribute*/
+.macro set_access_mode am
+    rdtlb1 a4, a3
+    ritlb1 a5, a3
+    srli a4, a4, 4
+    slli a4, a4, 4
+    srli a5, a5, 4
+    slli a5, a5, 4
+    addi a4, a4, \am
+    addi a5, a5, \am
+    wdtlb a4, a3
+    witlb a5, a3
+.endm
+
+
+
+
+#ifdef __cplusplus
+    #if __cplusplus
+        }
+    #endif
+#endif
+
diff --git a/hifi/xaf/hifi-dpf/include/sys/xt-shmem/board-hikey/xf-board.h b/hifi/xaf/hifi-dpf/include/sys/xt-shmem/board-hikey/xf-board.h
new file mode 100644
index 0000000..e42ab1b
--- /dev/null
+++ b/hifi/xaf/hifi-dpf/include/sys/xt-shmem/board-hikey/xf-board.h
@@ -0,0 +1,180 @@
+/*******************************************************************************
+* Copyright (C) 2018 Cadence Design Systems, Inc.
+* 
+* Permission is hereby granted, free of charge, to any person obtaining
+* a copy of this software and associated documentation files (the
+* "Software"), to use this Software with Cadence processor cores only and 
+* not with any other processors and platforms, subject to
+* the following conditions:
+* 
+* The above copyright notice and this permission notice shall be included
+* in all copies or substantial portions of the Software.
+* 
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+******************************************************************************/
+
+/*******************************************************************************
+ * board-hikey/xf-board.h
+ *
+ * HiKey960-specific definitions
+ *
+ *******************************************************************************/
+
+#ifndef __XF_H
+#error "xf-board.h mustn't be included directly"
+#endif
+
+/*******************************************************************************
+ * Global constants definitions
+ ******************************************************************************/
+
+/* ...shared memory interface address */
+#define XF_CFG_SHMEM_ADDRESS(core)      HIFI_HIKEY_SHARE_MEM_ADDR
+
+/* ...tracing buffer configuration (place at the end of memory) */
+#define XF_CFG_TRACE_START(core)        0x78000000
+#define XF_CFG_TRACE_END(core)          0x7FFFFFFF
+#if 1
+#define DSP_IPC_FROM_AP_INT_NO     (3)
+#define DSP_SYS_IPC_BASE_ADDR_NS   (0xe896b000)
+#define DSP_AP_TO_DSP_MAILBOX_NO   (18)
+#define DSP_DSP_TO_AP_MAILBOX_NO   (2)
+#define IPC_BUSY_RETRY_COUNT       (1000)
+#define IPC_ACPU_INT_SRC_HIFI_MSG  (1)
+#define BIT_MASK(n) (1 << (n))
+
+#define WORD_REF(address) (* ((unsigned int volatile *) (address)))
+
+#define SYS_IPC_LOCK(base)                  WORD_REF(base + 0xA00)
+#define SYS_IPC_ICLR(base, box)             WORD_REF(base + ((box) << 6) + 0x18)
+#define SYS_IPC_DATA(base, box, num)        WORD_REF(base + ((box) << 6) + 0x20 + ((num) << 2))
+#define SYS_IPC_CPUIRST(base, core)         WORD_REF(base + 0x804 + ((core) << 3))
+#define SYS_IPC_MODE(base, box)             WORD_REF(base + ((box) << 6) + 0x10)
+#define SYS_IPC_SOURCE(base, box)           WORD_REF(base + ((box) << 6))
+#define SYS_IPC_DEST(base, box)             WORD_REF(base + ((box) * 64) + 0x04)
+#define SYS_IPC_SEND(base, box)             WORD_REF(base + ((box) << 6) + 0x1c)
+#define SYS_IPC_IMASK(base, box)            WORD_REF(base + ((box) << 6) + 0x14)
+#define SYS_IPC_DCLR(base, box)             WORD_REF(base + ((box) * 64) + 0x08)
+#define SYS_IPC_CPUIMST(base, core)         WORD_REF(base + 0x800 + ((core) * 8))
+#define SYS_IPC_MODE_ACK     (7)
+#define SYS_IPC_MODE_IDLE    (4)
+#define SYS_IPC_MODE_AUTOACK (0)
+
+#define SYS_IPC_CORE_HIFI  (4)
+#define SYS_IPC_CORE_A15   (0)
+#define SYS_IPC_CORE_LPM3  (3)
+#endif
+/* ...inter-processor interrupt number (SEL:10 - LEVEL:15) */
+#define XF_PROXY_IPI_NUM(core)          15
+
+/*******************************************************************************
+ * External functions
+ ******************************************************************************/
+
+/* ...gdb stub initialization */
+extern void init_gdbstub(void);
+
+/* ...emit breakpoint */
+extern void breakpoint(void);
+#if 0// def HIKEY_XAF_IPC_COMMENT_OUT
+/*******************************************************************************
+ * Public proxy API
+ ******************************************************************************/
+
+/* ...notify remote side about status change */
+#define XF_PROXY_NOTIFY_PEER(core)      h2_wake_core()
+
+/* ...clear pending interrupt mask */
+#define XF_PROXY_SYNC_PEER(core)        h2_local_ack()
+
+/*******************************************************************************
+ * Auxiliary helper functions
+ ******************************************************************************/
+
+/* ...generate inter-processor interrupt for remote core */
+static inline void h2_wake_core(void)
+{
+    /* ...we have single INPUT-interrupt pin */
+	*(volatile unsigned int *)0xec800044 = 1;
+}
+
+/* ...acknowledge pending IPI interrupt */
+static inline void h2_local_ack(void)
+{
+    /* ...asserted interrupt cannot be cleared */
+}
+
+/*******************************************************************************
+ * Board specific init
+ ******************************************************************************/
+
+static inline void xf_board_init(void)
+{
+    /* ...initialize GDB debugging interface */
+    init_gdbstub();
+
+    /* ...indicate the board has started */
+	*(volatile unsigned int *)0xec800100 = 1;
+}
+#else
+//#define XF_PROXY_NOTIFY_PEER(core)      dsp_ipc_send_irq_to_ap()
+#define XF_PROXY_NOTIFY_PEER(core)      h2_wake_core()
+/* ...clear pending interrupt mask */
+#define XF_PROXY_SYNC_PEER(core)        h2_local_ack()
+
+/* ...generate inter-processor interrupt for remote core */
+static inline void h2_wake_core(void)
+{
+    unsigned int mode = 0;
+    unsigned int mode_1 = 0;
+
+    //    mode = SYS_IPC_MODE(DSP_SYS_IPC_BASE_ADDR_NS, DSP_DSP_TO_AP_MAILBOX_NO);
+    //mode = (* ((unsigned int volatile *) (0xe896b000 + ((2) << 6) + 0x10)));
+    mode = * (volatile unsigned int*) 0xe896b090;
+
+    //if (mode & BIT_MASK(SYS_IPC_MODE_IDLE)) {
+    //if (mode & (1 << (4))) {
+    if (mode & 0x10) {
+        mode_1=0;
+    } else {
+        return;
+    }
+
+    //SYS_IPC_SOURCE(DSP_SYS_IPC_BASE_ADDR_NS, DSP_DSP_TO_AP_MAILBOX_NO) = BIT_MASK(SYS_IPC_CORE_HIFI);
+    //(* ((unsigned int volatile *) (0xe896b000 + ((2) << 6))))= (1 << (4));
+    * (volatile unsigned int *) 0xe896b080 = (0x10);
+
+    //SYS_IPC_IMASK(DSP_SYS_IPC_BASE_ADDR_NS, DSP_DSP_TO_AP_MAILBOX_NO) = ~((unsigned int)(BIT_MASK(SYS_IPC_CORE_HIFI)|BIT_MASK(SYS_IPC_CORE_A15)));
+    //(* ((unsigned int volatile *) (0xe896b000 + ((2) << 6) + 0x14))) = ~ ((unsigned int)((1 << (4))|(1 << (0))));
+    * (volatile unsigned int *)0xe896b094 = ~ ((unsigned int)(0x11));
+
+    //SYS_IPC_DATA(DSP_SYS_IPC_BASE_ADDR_NS, DSP_DSP_TO_AP_MAILBOX_NO, 0) = IPC_ACPU_INT_SRC_HIFI_MSG;
+    //(* ((unsigned int volatile *) (0xe896b000 + ((2) << 6) + 0x20 + ((0) << 2)))) = 1;
+    * (volatile unsigned int *) 0xe896b0A0 = 1;
+
+    //SYS_IPC_MODE(DSP_SYS_IPC_BASE_ADDR_NS, DSP_DSP_TO_AP_MAILBOX_NO) = BIT_MASK(SYS_IPC_MODE_AUTOACK);
+    //(* ((unsigned int volatile *) (0xe896b000 + ((2) << 6) + 0x10))) = (1 << (0));
+    * (volatile unsigned int *) 0xe896b090 = 1;
+
+    //SYS_IPC_SEND(DSP_SYS_IPC_BASE_ADDR_NS, DSP_DSP_TO_AP_MAILBOX_NO) = BIT_MASK(SYS_IPC_CORE_HIFI);
+    //(* ((unsigned int volatile *) (0xe896b000 + ((2) << 6) + 0x1c))) = (1 << (4));
+    * (volatile unsigned int *) 0xe896b09C = 0x10;
+
+    return;
+}
+
+/* ...acknowledge pending IPI interrupt */
+static inline void h2_local_ack(void)
+{
+        /* ...asserted interrupt cannot be cleared */
+}
+
+#endif
+
diff --git a/hifi/xaf/hifi-dpf/include/sys/xt-shmem/xf-config.h b/hifi/xaf/hifi-dpf/include/sys/xt-shmem/xf-config.h
new file mode 100644
index 0000000..4775e80
--- /dev/null
+++ b/hifi/xaf/hifi-dpf/include/sys/xt-shmem/xf-config.h
@@ -0,0 +1,63 @@
+/*******************************************************************************
+* Copyright (C) 2018 Cadence Design Systems, Inc.
+* 
+* Permission is hereby granted, free of charge, to any person obtaining
+* a copy of this software and associated documentation files (the
+* "Software"), to use this Software with Cadence processor cores only and 
+* not with any other processors and platforms, subject to
+* the following conditions:
+* 
+* The above copyright notice and this permission notice shall be included
+* in all copies or substantial portions of the Software.
+* 
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+******************************************************************************/
+
+/*******************************************************************************
+ * xf-config.h
+ *
+ * Xtensa target configuration parameters
+ *
+ *******************************************************************************/
+
+/* ...number of DSP cores */
+#define XF_CFG_CORES_NUM                1
+
+/* ...size of the internal message pool (make it equal to at least ring-buffer) */
+#define XF_CFG_MESSAGE_POOL_SIZE        256
+
+/* ...local IPC is coherent (say) */
+#define XF_LOCAL_IPC_NON_COHERENT       0
+
+/* ...remote IPC is non coherent (say) */
+#define XF_REMOTE_IPC_NON_COHERENT      1
+
+/* ...size of the local memory pool (in bytes) */
+#define XF_CFG_LOCAL_POOL_SIZE          (1024 << 10)
+
+/* ...size of the shared memory pool (in bytes) */
+#if 1//def XAF_ENABLE_NON_HIKEY
+#define XF_CFG_REMOTE_IPC_POOL_SIZE     (256 << 10)
+#else
+#define XF_CFG_REMOTE_IPC_POOL_SIZE     (HIFI_MUSIC_DATA_SIZE)
+#endif
+
+/* ...size of the local memory pool (in bytes) */
+#define XF_CFG_LOCAL_IPC_POOL_SIZE      (1024 << 10)
+#ifdef XAF_ENABLE_NON_HIKEY
+/* ...maximal size of scratch memory is 80 KB */
+#define XF_CFG_CODEC_SCRATCHMEM_SIZE    (80 << 10)
+#else
+/* ...maximal size of scratch memory is 56 KB */
+#define XF_CFG_CODEC_SCRATCHMEM_SIZE    (56 << 10)
+#endif
+
+/* ...scratch memory is 8-bytes aligned */
+#define XF_CFG_CODEC_SCRATCHMEM_ALIGN   8
diff --git a/hifi/xaf/hifi-dpf/include/sys/xt-shmem/xf-hal.h b/hifi/xaf/hifi-dpf/include/sys/xt-shmem/xf-hal.h
new file mode 100644
index 0000000..82cf3c1
--- /dev/null
+++ b/hifi/xaf/hifi-dpf/include/sys/xt-shmem/xf-hal.h
@@ -0,0 +1,151 @@
+/*******************************************************************************
+* Copyright (C) 2018 Cadence Design Systems, Inc.
+* 
+* Permission is hereby granted, free of charge, to any person obtaining
+* a copy of this software and associated documentation files (the
+* "Software"), to use this Software with Cadence processor cores only and 
+* not with any other processors and platforms, subject to
+* the following conditions:
+* 
+* The above copyright notice and this permission notice shall be included
+* in all copies or substantial portions of the Software.
+* 
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+******************************************************************************/
+
+/*******************************************************************************
+ * xf-hal.h
+ *
+ * Platform-specific HAL definitions
+ *
+ *******************************************************************************/
+
+#ifndef __XF_H
+#error "xf-hal.h mustn't be included directly"
+#endif
+
+/*******************************************************************************
+ * Includes
+ ******************************************************************************/
+
+/* ...primitive types */
+#include "xf-types.h"
+
+/* ...XTOS runtime */
+#include <xtensa/xtruntime.h>
+
+/*******************************************************************************
+ * Auxilliary macros definitions
+ ******************************************************************************/
+
+/* ...use system-specific cache-line size */
+#define XF_PROXY_ALIGNMENT              XCHAL_DCACHE_LINESIZE
+
+/* ...properly aligned shared memory structure */
+#define __xf_shmem__        __attribute__((__aligned__(XF_PROXY_ALIGNMENT)))
+
+/*******************************************************************************
+ * Interrupt control
+ ******************************************************************************/
+
+/* ...disable interrupts on given core */
+static inline u32 xf_isr_disable(u32 core)
+{
+    /* ...no actual dependency on the core identifier */
+    return XTOS_SET_INTLEVEL(XCHAL_EXCM_LEVEL);
+}
+
+/* ...enable interrupts on given core */
+static inline void xf_isr_restore(u32 core, u32 status)
+{
+    /* ...no actual dependency on the core identifier */
+    XTOS_RESTORE_INTLEVEL(status);
+}
+
+/*******************************************************************************
+ * Auxiliary system-specific functions
+ ******************************************************************************/
+
+#if XF_CFG_CORES_NUM > 1
+/* ...current core identifier (from HW) */
+static inline u32 xf_core_id(void)
+{
+    /* ...retrieve core identifier from HAL */
+    return (u32) xthal_get_prid();
+}
+#else
+#define xf_core_id()        0
+#endif
+
+/*******************************************************************************
+ * Atomic operations (atomicity is assured on local core only)
+ ******************************************************************************/
+
+static inline int xf_atomic_test_and_set(volatile u32 *bitmap, u32 mask)
+{
+    u32     status;
+    u32     v;
+
+    /* ...atomicity is assured by interrupts masking */
+    status = XTOS_DISABLE_ALL_INTERRUPTS;
+    v = *bitmap, *bitmap = v | mask;
+    XTOS_RESTORE_INTLEVEL(status);
+    
+    return !(v & mask);
+}
+
+static inline int xf_atomic_test_and_clear(volatile u32 *bitmap, u32 mask)
+{
+    u32     status;
+    u32     v;
+
+    /* ...atomicity is assured by interrupts masking */
+    status = XTOS_DISABLE_ALL_INTERRUPTS;
+    v = *bitmap, *bitmap = v & ~mask;
+    XTOS_RESTORE_INTLEVEL(status);
+    
+    return (v & mask);
+}
+
+static inline u32 xf_atomic_set(volatile u32 *bitmap, u32 mask)
+{
+    u32     status;
+    u32     v;
+
+    /* ...atomicity is assured by interrupts masking */
+    status = XTOS_DISABLE_ALL_INTERRUPTS;
+    v = *bitmap, *bitmap = (v |= mask);
+    XTOS_RESTORE_INTLEVEL(status);
+
+    return v;
+}
+
+static inline u32 xf_atomic_clear(volatile u32 *bitmap, u32 mask)
+{
+    u32     status;
+    u32     v;
+    
+    /* ...atomicity is assured by interrupts masking */
+    status = XTOS_DISABLE_ALL_INTERRUPTS;
+    v = *bitmap, *bitmap = (v &= ~mask);
+    XTOS_RESTORE_INTLEVEL(status);
+
+    return v;
+}
+
+/*******************************************************************************
+ * Abortion macro (debugger should be configured)
+ ******************************************************************************/
+
+/* ...breakpoint function */
+extern void breakpoint(void);
+
+/* ...abort execution (enter into debugger) */
+#define __xf_abort()            breakpoint()
diff --git a/hifi/xaf/hifi-dpf/include/sys/xt-shmem/xf-ipc.h b/hifi/xaf/hifi-dpf/include/sys/xt-shmem/xf-ipc.h
new file mode 100644
index 0000000..3ce5bd6
--- /dev/null
+++ b/hifi/xaf/hifi-dpf/include/sys/xt-shmem/xf-ipc.h
@@ -0,0 +1,345 @@
+/*******************************************************************************
+* Copyright (C) 2018 Cadence Design Systems, Inc.
+* 
+* Permission is hereby granted, free of charge, to any person obtaining
+* a copy of this software and associated documentation files (the
+* "Software"), to use this Software with Cadence processor cores only and 
+* not with any other processors and platforms, subject to
+* the following conditions:
+* 
+* The above copyright notice and this permission notice shall be included
+* in all copies or substantial portions of the Software.
+* 
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+******************************************************************************/
+
+/*******************************************************************************
+ * xf-ipc.h
+ *
+ * Xtensa IPC mechanism
+ *
+ *******************************************************************************/
+
+#ifndef __XF_H
+#error "xf-ipc.h mustn't be included directly"
+#endif
+
+/*******************************************************************************
+ * Includes
+ ******************************************************************************/
+
+/* ...system-specific shared memory configuration */
+#include "xf-shmem.h"
+#ifndef XAF_ENABLE_NON_HIKEY
+#include <xtensa/xtruntime.h>
+extern volatile int waitstate;
+#endif
+
+#ifdef XAF_ENABLE_NON_HIKEY
+/*******************************************************************************
+ * Macros definitions (should better go to some other header)
+ ******************************************************************************/
+
+/*
+ *  Execute WAITI 0 (enabling interrupts) only if *(ptr) is zero.
+ *  The decision to execute WAITI is done atomically by disabling
+ *  interrupts at level 'level' (level must be a constant)
+ *  before checking the pointer.  Interrupts are always re-enabled
+ *  on exit from this macro.
+ */
+#define _WAITI_ON_PTR(ptr, level)                       \
+do {                                                    \
+    int __tmp;                                          \
+    __asm__ ("  rsil  %0, " #level " \n"                \
+			 "  l32i  %0, %1, 0 \n"                     \
+			 "  bnez  %0, 1f    \n"                     \
+			 "  waiti 0         \n"                     \
+             "1:rsil  %0, 0     \n"                     \
+             : "=a" (__tmp) : "a" (ptr) : "memory");    \
+} while(0)
+
+/* ...enable gdbstub */
+//#define XF_CFG_USE_GDBSTUB              0
+
+#ifndef XF_CFG_USE_GDBSTUB
+/* ...maybe "level" should be hidden here - we always magically set 15 */
+#define WAITI_ON_PTR(ptr, level)    _WAITI_ON_PTR(ptr, level)
+#else
+/* ...if debugger is enabled, do polling instead of waiting */
+static inline void WAITI_ON_PTR(volatile u32 *ptr, u32 level)
+{
+    extern void poll_debug_ring(void);
+    
+    while (*ptr == 0)
+    {
+        /* ...should be called with interrupts disabled - tbd */
+        poll_debug_ring();
+    }
+}
+#endif
+
+/*******************************************************************************
+ * Remote IPI interrupt mode
+ ******************************************************************************/
+
+/* ...enable/disable IPI interrupt */
+static inline void xf_ipi_enable(u32 core, int on)
+{
+    if (on)
+        _xtos_ints_on(1 << XF_PROXY_IPI_NUM(core));
+    else
+        _xtos_ints_off(1 << XF_PROXY_IPI_NUM(core));
+}
+
+/* ...wait in low-power mode for interrupt arrival if "ptr" is 0 */
+static inline void xf_ipi_wait(u32 core)
+{
+    xf_core_ro_data_t  *ro = XF_CORE_RO_DATA(core);
+    
+    /* ...enable IPI interrupt before sleeping */
+    xf_ipi_enable(core, 1);
+
+    /* ...wait in low-power mode, atomically checking *ipc != 0 */
+    WAITI_ON_PTR(&ro->ipc.wait, 15);
+
+    /* ...force disabling of IPI interrupts */
+    xf_ipi_enable(core, 0);
+
+    /* ...reset waiting object upon leaving */
+    ro->ipc.wait = 0;
+}
+#else
+#define _WAITI_ON_PTR(ptr, level)                       \
+    do {                                                    \
+        int __tmp;                                          \
+        __asm__ ("  rsil  %0, " #level " \n"                \
+                "  l32i  %0, %1, 0 \n"                     \
+                "  bnez  %0, 1f    \n"                     \
+                "  waiti 0         \n"                     \
+                "1:rsil  %0, 0     \n"                     \
+                : "=a" (__tmp) : "a" (ptr) : "memory");    \
+    } while(0)
+
+#define WAITI_ON_PTR(ptr, level)    _WAITI_ON_PTR(ptr, level)
+static inline void xf_ipi_wait(u32 core)
+{
+#if 0    
+    //  VOS_EnableInterrupt(DSP_IPC_FROM_AP_INT_NO);
+    _xtos_ints_on(1 << DSP_IPC_FROM_AP_INT_NO);
+    while(1)
+    {
+        if(waitstate ==1)
+        {
+            //            VOS_DisableInterrupt(DSP_IPC_FROM_AP_INT_NO);
+            _xtos_ints_off(1 << DSP_IPC_FROM_AP_INT_NO);
+            waitstate = 0;
+            break;
+        }
+    }
+#else
+
+    _xtos_ints_on(1 << DSP_IPC_FROM_AP_INT_NO);
+    /* ...wait in low-power mode, atomically checking *ipc != 0 */
+    WAITI_ON_PTR(&waitstate, 15);
+
+    /* ...force disabling of IPI interrupts */
+
+    _xtos_ints_off(1 << DSP_IPC_FROM_AP_INT_NO);
+    /* ...reset waiting object upon leaving */
+    waitstate = 0;
+    
+#endif
+}	
+#endif
+#ifdef XAF_ENABLE_NON_HIKEY
+/* ...complete IPI waiting (may be called from any context on local core) */
+static inline void xf_ipi_resume(u32 core)
+{
+    xf_core_ro_data_t  *ro = XF_CORE_RO_DATA(core);
+    
+    /* ...single instruction is written atomically; no need to mask interrupts */
+    ro->ipc.wait = 1;
+}
+#else
+/* ...complete IPI waiting (may be called from any context on local core) */
+static inline void xf_ipi_resume(u32 core)
+{
+    unsigned int ipc_int_state = 0;
+    unsigned int ipc_data = 0;
+
+    _xtos_ints_off(1 << DSP_IPC_FROM_AP_INT_NO);
+
+    //process message
+    ipc_int_state = SYS_IPC_CPUIRST(DSP_SYS_IPC_BASE_ADDR_NS, SYS_IPC_CORE_HIFI);
+
+    if (ipc_int_state & BIT_MASK(DSP_AP_TO_DSP_MAILBOX_NO)) {       //mailbox-18
+        SYS_IPC_ICLR(DSP_SYS_IPC_BASE_ADDR_NS, DSP_AP_TO_DSP_MAILBOX_NO) = BIT_MASK(SYS_IPC_CORE_HIFI);
+        waitstate = 1;
+    }
+    
+    //_xtos_ints_on(1 << DSP_IPC_FROM_AP_INT_NO);
+
+    return;
+}	
+#endif
+#if 0//ndef HIKEY_XAF_IPC_COMMENT_OUT
+/* ...notify remote side about status change */
+//#define XF_PROXY_NOTIFY_PEER(core)      dsp_ipc_send_irq_to_ap()
+
+static inline void dsp_ipc_send_irq_to_ap(void)
+{
+    unsigned int mode = 0;
+    unsigned int mode_1 = 0;
+
+    mode = SYS_IPC_MODE(DSP_SYS_IPC_BASE_ADDR_NS, DSP_DSP_TO_AP_MAILBOX_NO);
+
+    if (mode & BIT_MASK(SYS_IPC_MODE_IDLE)) {
+        mode_1=0;
+    } else {
+        return;
+    }
+
+
+    SYS_IPC_SOURCE(DSP_SYS_IPC_BASE_ADDR_NS, DSP_DSP_TO_AP_MAILBOX_NO) = BIT_MASK(SYS_IPC_CORE_HIFI);
+    SYS_IPC_IMASK(DSP_SYS_IPC_BASE_ADDR_NS, DSP_DSP_TO_AP_MAILBOX_NO) = ~((unsigned int)(BIT_MASK(SYS_IPC_CORE_HIFI)|BIT_MASK(SYS_IPC_CORE_A15)));
+    SYS_IPC_DATA(DSP_SYS_IPC_BASE_ADDR_NS, DSP_DSP_TO_AP_MAILBOX_NO, 0) = IPC_ACPU_INT_SRC_HIFI_MSG;
+    SYS_IPC_MODE(DSP_SYS_IPC_BASE_ADDR_NS, DSP_DSP_TO_AP_MAILBOX_NO) = BIT_MASK(SYS_IPC_MODE_AUTOACK);
+    SYS_IPC_SEND(DSP_SYS_IPC_BASE_ADDR_NS, DSP_DSP_TO_AP_MAILBOX_NO) = BIT_MASK(SYS_IPC_CORE_HIFI);
+
+    return;
+}	
+#endif
+/* ...assert IPI interrupt on remote core - board-specific */
+static inline void xf_ipi_assert(u32 core)
+{
+    XF_PROXY_NOTIFY_PEER(core);
+}
+	
+#ifdef XAF_ENABLE_NON_HIKEY
+/* ...initialize IPI subsystem */
+static inline int xf_ipi_init(u32 core)
+{
+    xf_core_ro_data_t  *ro = XF_CORE_RO_DATA(core);
+    extern void (* const xf_ipi_handlers[])(void);
+    
+    /* ...reset IPC data - no interrupt yet */
+    ro->ipc.wait = 0;
+
+    /* ...install interrupt handler */
+    _xtos_set_interrupt_handler(XF_PROXY_IPI_NUM(core), xf_ipi_handlers[core]);
+
+    return 0;
+}
+#else
+/* ...initialize IPI subsystem */
+static inline int xf_ipi_init(u32 core)
+{
+
+    waitstate =0;
+
+    dsp_debug_init();
+    //dsp_init_share_mem(HIKEY_AP2DSP_MSG_QUEUE_ADDR,HIKEY_DSP2AP_MSG_QUEUE_SIZE);
+    /* unlock reg */
+    SYS_IPC_LOCK(DSP_SYS_IPC_BASE_ADDR_NS) = 0x1ACCE551;
+    //VOS_ConnectInterrupt(DSP_IPC_FROM_AP_INT_NO, _ap_to_dsp_ipc_irq_proc);
+    VOS_ConnectInterrupt(DSP_IPC_FROM_AP_INT_NO, xf_ipi_resume);
+
+//    VOS_EnableInterrupt(DSP_IPC_FROM_AP_INT_NO);
+
+    return;   
+}	
+#endif
+
+/*******************************************************************************
+ * Shared memory operations
+ ******************************************************************************/
+
+/* ...NULL-address specification */
+#define XF_PROXY_NULL       (~0U)
+
+/* ...invalid proxy address */
+#define XF_PROXY_BADADDR    XF_CFG_REMOTE_IPC_POOL_SIZE
+/* ...translate buffer address to shared proxy address */
+static inline u32 xf_ipc_b2a(u32 core, void *b)
+{
+    xf_shmem_data_t    *shmem = XF_CORE_DATA(core)->shmem;
+    void               *start = shmem->buffer;
+
+    if (b == NULL)
+        return XF_PROXY_NULL;
+    else if ((s32)(b - start) < XF_CFG_REMOTE_IPC_POOL_SIZE)
+        return (u32)(b - start);
+    else
+        return XF_PROXY_BADADDR;
+}
+/* ...translate shared proxy address to local pointer */
+static inline void * xf_ipc_a2b(u32 core, u32 address)
+{
+    xf_shmem_data_t    *shmem = XF_CORE_DATA(core)->shmem;
+    void               *start = shmem->buffer;
+    
+    if (address < XF_CFG_REMOTE_IPC_POOL_SIZE)
+        return start + address;
+    else if (address == XF_PROXY_NULL)
+        return NULL;
+    else
+        return (void *)-1;
+}
+
+/* ...component association with remote IPC client */
+static inline void xf_ipc_component_addref(u32 session)
+{
+}
+
+/* ...delete record about component association with remote IPC client */
+static inline void xf_ipc_component_rmref(u32 id)
+{
+}
+
+/* ...system-specific IPC layer initialization */
+extern int xf_ipc_init(u32 core);
+
+/*******************************************************************************
+ * Mutex definitions
+ ******************************************************************************/
+
+/* ...export shared memory access macros */
+#define MUTEX_SHARED_READ(core)         \
+    ({  xf_core_ro_data_t  *__ro = XF_CORE_RO_DATA(core); __ro->lock[0]; })
+
+#define MUTEX_SHARED_WRITE(core, val)   \
+    ({  xf_core_ro_data_t  *__ro = XF_CORE_RO_DATA(core); __ro->lock[0] = (val); })
+
+/* ...include library header */
+#include "lib/mutex.h"
+
+#if XF_CFG_CORES_NUM > 1
+/* ...rename API functions */
+static inline void xf_mutex_lock(u32 core)
+{
+    mutex_lock(core);
+}
+
+static inline void xf_mutex_unlock(u32 core)
+{
+    mutex_unlock(core);
+}
+
+#else
+/* ...for single-core setting no locking is actually needed */
+static inline void xf_mutex_lock(u32 core)
+{
+}
+
+static inline void xf_mutex_unlock(u32 core)
+{
+}
+
+#endif  /* XF_CFG_CORES_NUM > 1 */
diff --git a/hifi/xaf/hifi-dpf/include/sys/xt-shmem/xf-mem.h b/hifi/xaf/hifi-dpf/include/sys/xt-shmem/xf-mem.h
new file mode 100644
index 0000000..dc27787
--- /dev/null
+++ b/hifi/xaf/hifi-dpf/include/sys/xt-shmem/xf-mem.h
@@ -0,0 +1,180 @@
+/*******************************************************************************
+* Copyright (C) 2018 Cadence Design Systems, Inc.
+* 
+* Permission is hereby granted, free of charge, to any person obtaining
+* a copy of this software and associated documentation files (the
+* "Software"), to use this Software with Cadence processor cores only and 
+* not with any other processors and platforms, subject to
+* the following conditions:
+* 
+* The above copyright notice and this permission notice shall be included
+* in all copies or substantial portions of the Software.
+* 
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+******************************************************************************/
+
+/*******************************************************************************
+ * xf-mem.h
+ *
+ * System-specific memory allocator
+ *
+ *******************************************************************************/
+
+#ifndef __XF_H
+#error "xf-mem.h mustn't be included directly"
+#endif
+
+/*******************************************************************************
+ * System specific memory pools
+ ******************************************************************************/
+
+#if XF_CFG_CORES_NUM > 1
+/* ...shared memory pool for communication within DSP-cluster */
+extern xf_mm_pool_t     xf_dsp_shmem_pool;
+#endif
+
+/*******************************************************************************
+ * Platform-specific SHMEM allocation registering functions
+ ******************************************************************************/
+
+/* ...register shmem allocation address */
+static inline void xf_shmem_alloc_addref(u32 core, xf_message_t *m)
+{
+}
+
+/* ...unregister shmem allocation address */
+static inline void xf_shmem_alloc_rmref(u32 core, xf_message_t *m)
+{
+}
+
+/*******************************************************************************
+ * API functions
+ ******************************************************************************/
+
+/* ...allocate aligned memory on particular core specifying if it is shared */
+static inline void * xf_mem_alloc(u32 size, u32 align, u32 core, u32 shared)
+{
+#if XF_CFG_CORES_NUM > 1    
+    if (shared)
+    {
+        /* ...if memory is shared, core is dropped */
+        return xf_mm_alloc(&xf_dsp_shmem_pool, size);
+    }
+#endif
+    
+    /* ...select local memory pool basing on core specification */
+    return xf_mm_alloc(&XF_CORE_DATA(core)->local_pool, size);
+}
+#ifdef XAF_ENABLE_NON_HIKEY
+/* ...redefine macro to add bugchecks */
+#define xf_mem_alloc(size, align, core, shared)                                 \
+({                                                                              \
+    void *__data;                                                               \
+    /* ...size must be properly aligned */                                      \
+    BUG(!XF_MM_ALIGNED(size), _x("Bad size: %u"), size);                        \
+    __data = (xf_mem_alloc)(size, align, core, shared);                         \
+    TRACE(1, _b("alloc-%u: %p[%u] (shared=%u)"), core, __data, size, shared);   \
+    __data;                                                                     \
+})
+#endif
+/* ...release allocated memory */
+static inline void xf_mem_free(void *p, u32 size, u32 core, u32 shared)
+{
+#if XF_CFG_CORES_NUM > 1    
+    if (shared)
+    {
+        /* ...if memory is shared, core is dropped */
+        xf_mm_free(&xf_dsp_shmem_pool, p, size);
+        return;
+    }
+#endif
+    
+    /* ...select proper pool basing on core specification */
+    xf_mm_free(&XF_CORE_DATA(core)->local_pool, p, size);
+}
+#ifdef XAF_ENABLE_NON_HIKEY
+/* ...redefine macro to add bugchecks */
+#define xf_mem_free(p, size, core, shared)                                      \
+({                                                                              \
+    void *__data = (p);                                                         \
+    /* ...size must be properly aligned */                                      \
+    BUG(!XF_MM_ALIGNED(size), _x("Bad size: %u"), size);                        \
+    TRACE(1, _b("free-%u: %p[%u] (shared=%u)"), core, __data, size, shared);    \
+    (xf_mem_free)(__data, size, core, shared);                                  \
+})
+#endif
+/* ...allocate AP-DSP shared memory */
+static inline int xf_shmem_alloc(u32 core, xf_message_t *m)
+{
+    xf_mm_pool_t   *pool = &XF_CORE_DATA(core)->shared_pool;
+
+    /* ...length is always cache-line aligned */    
+    if ((m->buffer = xf_mm_alloc(pool, XF_ALIGNED(m->length))) != NULL)
+    {
+        /* ...register allocation address */
+        xf_shmem_alloc_addref(core, m);
+
+        return 0;
+    }
+    else
+    {
+        return -ENOMEM;
+    }
+}
+
+/* ...free AP-DSP shared memory */
+static inline void xf_shmem_free(u32 core, xf_message_t *m)
+{
+    xf_mm_pool_t   *pool = &XF_CORE_DATA(core)->shared_pool;
+
+    /* ...length is always cache-line aligned */
+    xf_mm_free(pool, m->buffer, XF_ALIGNED(m->length));
+
+    /* ...unregister allocation address */
+    xf_shmem_alloc_rmref(core, m);
+}
+
+/*******************************************************************************
+ * Scratch memory management
+ ******************************************************************************/
+
+static inline void * xf_scratch_mem_init(u32 core)
+{
+    /* ...allocate scratch memory from local DSP memory */
+    return xf_mem_alloc(XF_CFG_CODEC_SCRATCHMEM_SIZE, XF_CFG_CODEC_SCRATCHMEM_ALIGN, core, 0);
+}
+
+/*******************************************************************************
+ * Helpers - hmm; they are platform-independent - tbd
+ ******************************************************************************/
+
+/* ...allocate local buffer */
+static inline int xf_mm_alloc_buffer(u32 size, u32 align, u32 core, xf_mm_buffer_t *b)
+{
+    /* ...allocate memory from proper local pool */
+    if ((size = XF_MM(size)) != 0)
+        XF_CHK_ERR(b->addr = xf_mem_alloc(size, align, core, 0), -ENOMEM);
+    else
+        b->addr = NULL;
+
+    /* ...save address */
+    b->size = size;
+    
+    return 0;
+}
+
+/* ...free local buffer */
+static inline void  xf_mm_free_buffer(xf_mm_buffer_t *b, u32 core)
+{
+    if (b->addr)
+    {
+        xf_mem_free(b->addr, b->size, core, 0);
+    }
+}
diff --git a/hifi/xaf/hifi-dpf/include/sys/xt-shmem/xf-runtime.h b/hifi/xaf/hifi-dpf/include/sys/xt-shmem/xf-runtime.h
new file mode 100644
index 0000000..ab328cc
--- /dev/null
+++ b/hifi/xaf/hifi-dpf/include/sys/xt-shmem/xf-runtime.h
@@ -0,0 +1,81 @@
+/*******************************************************************************
+* Copyright (C) 2018 Cadence Design Systems, Inc.
+* 
+* Permission is hereby granted, free of charge, to any person obtaining
+* a copy of this software and associated documentation files (the
+* "Software"), to use this Software with Cadence processor cores only and 
+* not with any other processors and platforms, subject to
+* the following conditions:
+* 
+* The above copyright notice and this permission notice shall be included
+* in all copies or substantial portions of the Software.
+* 
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+******************************************************************************/
+
+/*******************************************************************************
+ * xf-runtime.h
+ *
+ * Platform-specific runtime data definitions
+ *
+ *******************************************************************************/
+
+#ifndef __XF_H
+#error "xf-runtime.h mustn't be included directly"
+#endif
+
+/*******************************************************************************
+ * Includes
+ ******************************************************************************/
+
+/* ...platform HAL layer */
+#include "xf-hal.h"
+
+/*******************************************************************************
+ * Mutex (opaque) data definition
+ ******************************************************************************/
+
+typedef volatile u32 xf_mutex_t[XF_CFG_CORES_NUM > 1 ? 1 : 0];
+
+/*******************************************************************************
+ * Local/remote/ISR IPC (opaque) data
+ ******************************************************************************/
+
+typedef struct xf_ipc_handle
+{
+    /* ...variable we are waiting on */
+    u32                 wait;
+    
+}   xf_ipc_handle_t;    
+
+/*******************************************************************************
+ * IPC events
+ ******************************************************************************/
+
+/* ...core resumption flag */
+#define XF_IPC_EVENT_CORE_ASSERT        (1 << 0)
+
+/* ...core waiting flag */
+#define XF_IPC_EVENT_CORE_WAIT          (1 << 1)
+
+/* ...shared memory assertion flag */
+#define XF_IPC_EVENT_SHMEM_ASSERT       (1 << 2)
+
+/* ...shared memory waiting flag */
+#define XF_IPC_EVENT_SHMEM_WAIT         (1 << 3)
+
+/* ...disabled interrupts status */
+#define XF_IPC_EVENT_ISR_OFF            (1 << 4)
+
+/*******************************************************************************
+ * Shared memory interface (opaque) data
+ ******************************************************************************/
+
+typedef void * xf_shmem_handle_t;
diff --git a/hifi/xaf/hifi-dpf/include/sys/xt-shmem/xf-shmem.h b/hifi/xaf/hifi-dpf/include/sys/xt-shmem/xf-shmem.h
new file mode 100644
index 0000000..813bfb4
--- /dev/null
+++ b/hifi/xaf/hifi-dpf/include/sys/xt-shmem/xf-shmem.h
@@ -0,0 +1,173 @@
+/*******************************************************************************
+* Copyright (C) 2018 Cadence Design Systems, Inc.
+* 
+* Permission is hereby granted, free of charge, to any person obtaining
+* a copy of this software and associated documentation files (the
+* "Software"), to use this Software with Cadence processor cores only and 
+* not with any other processors and platforms, subject to
+* the following conditions:
+* 
+* The above copyright notice and this permission notice shall be included
+* in all copies or substantial portions of the Software.
+* 
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+******************************************************************************/
+
+/*******************************************************************************
+ * xf-shmem.h
+ *
+ * Definitions for Xtensa SHMEM configuration
+ *
+ *******************************************************************************/
+
+#ifndef __XF_H
+#error "xf-shmem.h mustn't be included directly"
+#endif
+
+/*******************************************************************************
+ * Memory structures
+ ******************************************************************************/
+
+/* ...data managed by host CPU (remote) - in case of shunt it is a IPC layer */
+struct xf_proxy_host_data
+{
+    /* ...command queue */
+    xf_proxy_message_t      command[XF_PROXY_MESSAGE_QUEUE_LENGTH];
+    
+    /* ...writing index into command queue */
+    u32                     cmd_write_idx;
+    
+    /* ...reading index for response queue */
+    u32                     rsp_read_idx;
+#ifdef XAF_ENABLE_NON_HIKEY
+}   __attribute__((__packed__, __aligned__(XF_PROXY_ALIGNMENT)));
+#else
+}/*   __attribute__((__packed__, __aligned__(XF_PROXY_ALIGNMENT)))*/;
+#endif
+
+/* ...data managed by DSP (local) */
+struct xf_proxy_dsp_data
+{
+    /* ...response queue */
+    xf_proxy_message_t      response[XF_PROXY_MESSAGE_QUEUE_LENGTH];
+    
+    /* ...writing index into response queue */
+    u32                     rsp_write_idx;
+    
+    /* ...reading index for command queue */
+    u32                     cmd_read_idx;
+#ifdef XAF_ENABLE_NON_HIKEY
+}   __attribute__((__packed__, __aligned__(XF_PROXY_ALIGNMENT)));
+#else
+}/*   __attribute__((__packed__, __aligned__(XF_PROXY_ALIGNMENT)))*/;
+#endif
+/* ...shared memory data */
+typedef struct xf_shmem_data 
+{
+    /* ...outgoing data (maintained by host CPU (remote side)) */
+#ifdef XAF_ENABLE_NON_HIKEY
+    struct xf_proxy_host_data   remote      __xf_shmem__;
+    
+    /* ...ingoing data (maintained by DSP (local side)) */
+    struct xf_proxy_dsp_data    local       __xf_shmem__;
+
+    /* ...shared memory pool (page-aligned; why? we map memory to user-space) */
+    u8                          buffer[XF_CFG_REMOTE_IPC_POOL_SIZE]   __attribute__((__aligned__(4096)));
+#else
+    /* ...outgoing data (maintained by host CPU (remote side)) */
+    struct xf_proxy_host_data   remote/*      __xf_shmem__*/;
+    
+    /* ...ingoing data (maintained by DSP (local side)) */
+    struct xf_proxy_dsp_data    local/*       __xf_shmem__*/;
+
+    /* ...shared memory pool (page-aligned; why? we map memory to user-space) */
+    uint8_t*                          buffer;
+#endif
+
+}   xf_shmem_data_t;
+
+/*******************************************************************************
+ * Shared memory accessors
+ ******************************************************************************/
+
+/* ...shared memory pointer for a core */
+#define XF_SHMEM_DATA(core)                         \
+    ((xf_shmem_data_t *)XF_CORE_DATA(core)->shmem)
+
+/* ...atomic reading */
+#define XF_PROXY_READ_ATOMIC(var)                   \
+    ({ XF_PROXY_INVALIDATE(&(var), sizeof(var)); (var); })
+
+/* ...atomic writing */
+#define XF_PROXY_WRITE_ATOMIC(var, value)           \
+    ({(var) = (value); XF_PROXY_FLUSH(&(var), sizeof(var)); (value); })
+
+/* ...accessors */
+#define XF_PROXY_READ(core, field)                  \
+    __XF_PROXY_READ_##field(XF_SHMEM_DATA(core))
+
+#define XF_PROXY_WRITE(core, field, v)              \
+    __XF_PROXY_WRITE_##field(XF_SHMEM_DATA(core), (v))
+
+/* ...individual fields accessors */
+#define __XF_PROXY_READ_cmd_write_idx(proxy)        \
+    XF_PROXY_READ_ATOMIC(proxy->remote.cmd_write_idx)
+
+#define __XF_PROXY_READ_cmd_read_idx(proxy)         \
+    proxy->local.cmd_read_idx
+
+#define __XF_PROXY_READ_rsp_write_idx(proxy)        \
+    proxy->local.rsp_write_idx
+
+#define __XF_PROXY_READ_rsp_read_idx(proxy)         \
+    XF_PROXY_READ_ATOMIC(proxy->remote.rsp_read_idx)
+
+/* ...individual fields accessors */
+#define __XF_PROXY_WRITE_cmd_write_idx(proxy, v)    \
+    XF_PROXY_WRITE_ATOMIC(proxy->remote.cmd_write_idx, v)
+
+#define __XF_PROXY_WRITE_cmd_read_idx(proxy, v)     \
+    XF_PROXY_WRITE_ATOMIC(proxy->local.cmd_read_idx, v)
+
+#define __XF_PROXY_WRITE_rsp_read_idx(proxy, v)     \
+    XF_PROXY_WRITE_ATOMIC(proxy->remote.rsp_read_idx, v)
+
+#define __XF_PROXY_WRITE_rsp_write_idx(proxy, v)    \
+    XF_PROXY_WRITE_ATOMIC(proxy->local.rsp_write_idx, v)
+
+/* ...command buffer accessor */
+#define XF_PROXY_COMMAND(core, idx)                 \
+    (&XF_SHMEM_DATA((core))->remote.command[(idx)])
+
+/* ...response buffer accessor */
+#define XF_PROXY_RESPONSE(core, idx)                \
+    (&XF_SHMEM_DATA((core))->local.response[(idx)])
+
+/*******************************************************************************
+ * Platform-specific SHMEM enable status
+ ******************************************************************************/
+
+static inline int xf_shmem_enabled(u32 core)
+{
+    return (core == 0);
+}
+
+/*******************************************************************************
+ * API functions
+ ******************************************************************************/
+
+/* ...process shared memory interface on given DSP core */
+extern void xf_shmem_process_queues(u32 core);
+
+/* ...completion callback for message originating from remote proxy */
+extern void xf_msg_proxy_complete(xf_message_t *m);
+
+/* ...initialize shared memory interface (DSP side) */
+extern int xf_shmem_init(u32 core);
diff --git a/hifi/xaf/hifi-dpf/include/sys/xt-shmem/xf-sys.h b/hifi/xaf/hifi-dpf/include/sys/xt-shmem/xf-sys.h
new file mode 100644
index 0000000..b82c10e
--- /dev/null
+++ b/hifi/xaf/hifi-dpf/include/sys/xt-shmem/xf-sys.h
@@ -0,0 +1,75 @@
+/*******************************************************************************
+* Copyright (C) 2018 Cadence Design Systems, Inc.
+* 
+* Permission is hereby granted, free of charge, to any person obtaining
+* a copy of this software and associated documentation files (the
+* "Software"), to use this Software with Cadence processor cores only and 
+* not with any other processors and platforms, subject to
+* the following conditions:
+* 
+* The above copyright notice and this permission notice shall be included
+* in all copies or substantial portions of the Software.
+* 
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+******************************************************************************/
+
+/*******************************************************************************
+ * xf-sys.h
+ *
+ * Definitions for Xtensa SHMEM configuration
+ *
+ *******************************************************************************/
+
+#ifndef __XF_H
+#error "xf-sys.h mustn't be included directly"
+#endif
+
+/*******************************************************************************
+ * Standard system includes
+ ******************************************************************************/
+
+/* ...from directory ./board-BOARDNAME */
+#include "xf-board.h"
+
+/*******************************************************************************
+ * Global abstractions
+ ******************************************************************************/
+
+/* ...prevent instructions reordering */
+#define barrier()                           \
+    __asm__ __volatile__("": : : "memory")
+
+/* ...memory barrier */
+#define XF_PROXY_BARRIER()                  \
+    __asm__ __volatile__("memw": : : "memory")
+
+/* ...memory invalidation */
+#define XF_PROXY_INVALIDATE(buf, length)    \
+    ({ if ((length)) { xthal_dcache_region_invalidate((buf), (length)); barrier(); } buf; })
+
+/* ...memory flushing */
+#define XF_PROXY_FLUSH(buf, length)         \
+    ({ if ((length)) { barrier(); xthal_dcache_region_writeback((buf), (length)); XF_PROXY_BARRIER(); } buf; })
+
+/*******************************************************************************
+ * Core-specific data accessor
+ ******************************************************************************/
+
+/* ...per-core execution data */
+extern xf_core_data_t   xf_core_data[XF_CFG_CORES_NUM];
+
+/* ...local memory accessor */
+#define XF_CORE_DATA(core)      (&xf_core_data[core])
+
+/*******************************************************************************
+ * Inter-processor communication and shared memory interface definition
+ ******************************************************************************/
+
+#include "xf-ipc.h"
diff --git a/hifi/xaf/hifi-dpf/include/sys/xt-shmem/xf-types.h b/hifi/xaf/hifi-dpf/include/sys/xt-shmem/xf-types.h
new file mode 100644
index 0000000..5f58825
--- /dev/null
+++ b/hifi/xaf/hifi-dpf/include/sys/xt-shmem/xf-types.h
@@ -0,0 +1,55 @@
+/*******************************************************************************
+* Copyright (C) 2018 Cadence Design Systems, Inc.
+* 
+* Permission is hereby granted, free of charge, to any person obtaining
+* a copy of this software and associated documentation files (the
+* "Software"), to use this Software with Cadence processor cores only and 
+* not with any other processors and platforms, subject to
+* the following conditions:
+* 
+* The above copyright notice and this permission notice shall be included
+* in all copies or substantial portions of the Software.
+* 
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+******************************************************************************/
+
+/*******************************************************************************
+ * xf-types.h
+ *
+ * Platform-specific typedefs
+ *
+ *******************************************************************************/
+
+#ifndef __XF_H
+#error "xf-types.h mustn't be included directly"
+#endif
+
+/*******************************************************************************
+ * Includes
+ ******************************************************************************/
+
+#include <stdint.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdio.h>
+#include <assert.h>
+#include <errno.h>
+#include <xtensa/config/core.h>
+
+/*******************************************************************************
+ * Primitive types
+ ******************************************************************************/
+
+typedef unsigned int    u32;
+typedef signed int      s32;
+typedef unsigned short  u16;
+typedef signed short    s16;
+typedef unsigned char   u8;
+typedef signed char     s8;
diff --git a/hifi/xaf/hifi-dpf/include/xa_profiler.h b/hifi/xaf/hifi-dpf/include/xa_profiler.h
new file mode 100644
index 0000000..675ff15
--- /dev/null
+++ b/hifi/xaf/hifi-dpf/include/xa_profiler.h
@@ -0,0 +1,156 @@
+/*******************************************************************************
+* Copyright (C) 2018 Cadence Design Systems, Inc.
+* 
+* Permission is hereby granted, free of charge, to any person obtaining
+* a copy of this software and associated documentation files (the
+* "Software"), to use this Software with Cadence processor cores only and 
+* not with any other processors and platforms, subject to
+* the following conditions:
+* 
+* The above copyright notice and this permission notice shall be included
+* in all copies or substantial portions of the Software.
+* 
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+******************************************************************************/
+
+#ifndef __XA_PROFILER_H__
+#define __XA_PROFILER_H__
+
+#if !defined(PROFILE) && __XCC__
+#define PROFILE 1
+#endif
+
+#if !defined(PREFETCH_CTL) && __XCC__
+#define PREFETCH_CTL 1
+#endif
+
+#ifdef PROFILE
+#include <xtensa/hal.h>
+#include <sys/times.h>
+
+#include "xa_type_def.h"
+#include "xa_timer.h"
+
+TRACE_TAG(MCPS,1);
+
+typedef struct XA_PROFILER {
+#if 1
+    unsigned long cstart;
+    unsigned long cstop;
+    unsigned long cycles;
+    unsigned long g_output_bytes;
+    unsigned long Peak;
+    unsigned long Sum;
+
+    unsigned long sample_rate;
+    unsigned long channels;
+    unsigned long pcm_width;
+#else
+    struct tms start;
+    struct tms stop;
+    double Peak;
+    double Sum;
+    long long cycles;
+#endif
+    int Peak_frame;
+    int frame_count;
+    long long output_bytes;
+    long long total_cycles;
+    long long total_samples;
+    char *id;
+} xa_profiler;
+
+extern xa_profiler prof;
+
+static inline void xa_compute_mcps(xa_profiler *p_prof, WORD32 samples_decoded, UWORD32 samp_freq, long long gen_strm_pos)
+{
+    double Ave=0.0, Curr;
+
+    if (samples_decoded <= 0)
+        return;
+
+    p_prof->total_samples += samples_decoded;
+    p_prof->frame_count++;
+
+    clock_t cycles = p_prof->cycles;
+    p_prof->total_cycles = 0;
+    Curr = ((double) cycles / samples_decoded * samp_freq / 1000000);
+    
+    if (p_prof->frame_count > 1) {
+        p_prof->Sum += Curr;
+        Ave = p_prof->Sum / (p_prof->frame_count-1);
+
+        if (p_prof->Peak < Curr) {
+            p_prof->Peak = Curr;
+            p_prof->Peak_frame = (p_prof->frame_count);
+        }
+    }                
+
+    unsigned long long total_msec =
+        (unsigned long long)((double)p_prof->total_samples / samp_freq * 1000.0);
+    int msec = (int)(total_msec % 1000);
+    unsigned long long total_seconds = total_msec / 1000;
+    int seconds = (int)(total_seconds % 60);
+    int minutes = (int)(total_seconds / 60);
+
+#if 1
+    TRACE(MCPS, _b("[%d] %d:%d.%d MCPS: %d Average: %d samples: %d\n"),
+        p_prof->frame_count, (uint32_t)minutes, (uint32_t)seconds, (uint32_t)msec,
+        (uint32_t)Curr, (uint32_t)Ave, samples_decoded);
+#else
+    TRACE(MCPS, _b("[%d|%lld] %d:%02d.%03d MCPS: %.2f Average: %.2f Peak: %.2f @ [%d] %s\n"),
+        p_prof->frame_count, gen_strm_pos, minutes, seconds, msec,
+        Curr, Ave, p_prof->Peak, p_prof->Peak_frame, p_prof->id);
+#endif
+
+    /* reset counters */
+    p_prof->g_output_bytes = 0;
+    p_prof->cycles = 0;
+}
+
+#define INIT_XA_PROFILER(x, a)                  do { memset(&x, 0, sizeof(xa_profiler)); \
+                                                     x.sample_rate = 48000;\
+                                                     x.channels = 2;\
+                                                     x.pcm_width = 16;\
+                                                     x.id = a; } while(0)
+
+#define START_TIME_XA_PROFILER(x)               do { set_ccount(0); \
+                                                     x.cstart=read_ccount(); } while(0)
+#define STOP_TIME_XA_PROFILER(x)                do { x.cstop =read_ccount(); \
+                                                     x.cycles += (x.cstop - x.cstart); } while(0)
+#define COMPUTE_MHZ_XA_PROFILER(x, a, b, c)        do { xa_compute_mcps(&x, a, b, c); } while(0)
+#define SUMMARY_XA_PROFILER(x)                  do { fprintf(stdout,"\n%5s Peak MCPS = %f\n", x.id, x.Peak); \
+                                                     fprintf(stdout,"%5s Peak frame = %d\n", x.id, x.Peak_frame); \
+                                                     fprintf(stdout,"%5s Average MCPS = %f\n", x.id, (x.frame_count < 2) ? 0 : (x.Sum/(x.frame_count-1))); } while(0) 
+
+#else
+
+typedef struct XA_PROFILER {    
+    int place_holder;
+} xa_profiler;
+
+#define INIT_XA_PROFILER(x, a)                  do {} while(0)
+#define START_TIME_XA_PROFILER(x)               do {} while(0)
+#define STOP_TIME_XA_PROFILER(x)                do {} while(0)
+#define COMPUTE_MHZ_XA_PROFILER(x, a, b)        do {} while(0)
+#define SUMMARY_XA_PROFILER(x)                  do {} while(0)
+#endif 
+
+#ifdef PREFETCH_CTL
+#define PREFETCH_AGGRESSIVE(x)                  do { x = xthal_set_cache_prefetch ((XTHAL_DCACHE_PREFETCH_HIGH | XTHAL_ICACHE_PREFETCH_HIGH)); \
+                                                   } while(0)
+#define PREFETCH_RESTORE(x)                     do { xthal_set_cache_prefetch (x); } while(0)
+#else
+#define PREFETCH_AGGRESSIVE(x)                  do {} while(0)
+#define PREFETCH_RESTORE(x)                     do {} while(0)
+#endif
+
+#endif /* __XA_PROFILER_H__ */
+
diff --git a/hifi/xaf/hifi-dpf/include/xa_timer.h b/hifi/xaf/hifi-dpf/include/xa_timer.h
new file mode 100644
index 0000000..d45cb4b
--- /dev/null
+++ b/hifi/xaf/hifi-dpf/include/xa_timer.h
@@ -0,0 +1,111 @@
+/*******************************************************************************
+* Copyright (C) 2018 Cadence Design Systems, Inc.
+* 
+* Permission is hereby granted, free of charge, to any person obtaining
+* a copy of this software and associated documentation files (the
+* "Software"), to use this Software with Cadence processor cores only and 
+* not with any other processors and platforms, subject to
+* the following conditions:
+* 
+* The above copyright notice and this permission notice shall be included
+* in all copies or substantial portions of the Software.
+* 
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+******************************************************************************/
+#include <xtensa/xtruntime.h>
+#include <xtensa/config/specreg.h>
+
+extern const unsigned char Xthal_have_ccount;
+extern const unsigned char Xthal_num_ccompare;
+extern void xthal_set_ccompare(int n, unsigned value);
+extern unsigned xthal_get_ccompare(int n);
+
+/*--------------------------------------------*/
+#include <xtensa/config/core.h>
+#define TIMER_INTERVAL 0x1000
+
+#define TIMER_INT_MASK (1 << XCHAL_TIMER0_INTERRUPT)
+#define TIMER2_INT_MASK (1 << XCHAL_TIMER1_INTERRUPT)
+#define TWO_TIMERS_INT_MASK ( TIMER_INT_MASK + TIMER2_INT_MASK )
+#define _XTSTR(x) # x
+#define XTSTR(x) _XTSTR(x)
+
+static __inline__ int read_ccount()
+{
+    unsigned int ccount;
+    __asm__ __volatile__ (
+    "rsr %0, "XTSTR(CCOUNT)
+    : "=a" (ccount)
+    );
+    return ccount;
+}
+
+static __inline__ int read_ccompare0()
+{
+    unsigned int ccompare0;
+    __asm__ __volatile__ (
+    "rsr %0, "XTSTR(CCOMPARE_0)
+    : "=a" (ccompare0)
+    );
+    return ccompare0;
+}
+
+static __inline__ int read_ccompare1()
+{
+    unsigned int ccompare1;
+    __asm__ __volatile__ (
+    "rsr %0, "XTSTR(CCOMPARE_1)
+    : "=a" (ccompare1)
+    );
+    return ccompare1;
+}
+
+static __inline__ unsigned int read_intenable()
+{
+    unsigned int intenable;
+    __asm__ __volatile__ (
+    "rsr %0, "XTSTR(INTENABLE)
+    : "=a" (intenable)
+    );
+    return intenable;
+}
+
+static __inline__ void set_ccompare1(int val)
+{
+    __asm__ __volatile__ (
+    "wsr %0, "XTSTR(CCOMPARE_1)"\n\t"
+    "isync\n\t"
+    :
+    : "a" (val)
+    );
+}
+
+static __inline__ void set_ccompare0(int val)
+{
+    __asm__ __volatile__ (
+    "wsr %0, "XTSTR(CCOMPARE_0)"\n\t"
+    "isync\n\t"
+    :
+    : "a" (val)
+    );
+}
+
+/*---------------------------------------------------*/
+
+static __inline__ void set_ccount(int val)
+{
+  __asm__ __volatile__ (
+  "wsr %0, ccount\n"
+  "isync\n"
+  :
+  : "a" (val)
+  );
+}
+
diff --git a/hifi/xaf/hifi-dpf/include/xf-component.h b/hifi/xaf/hifi-dpf/include/xf-component.h
new file mode 100644
index 0000000..f97f2e4
--- /dev/null
+++ b/hifi/xaf/hifi-dpf/include/xf-component.h
@@ -0,0 +1,91 @@
+/*******************************************************************************
+* Copyright (C) 2018 Cadence Design Systems, Inc.
+* 
+* Permission is hereby granted, free of charge, to any person obtaining
+* a copy of this software and associated documentation files (the
+* "Software"), to use this Software with Cadence processor cores only and 
+* not with any other processors and platforms, subject to
+* the following conditions:
+* 
+* The above copyright notice and this permission notice shall be included
+* in all copies or substantial portions of the Software.
+* 
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+******************************************************************************/
+
+/*******************************************************************************
+ * xf-component.h
+ *
+ * Xtensa processing framework component definition
+ *
+ *******************************************************************************/
+
+#ifndef __XF_H
+#error "xf-component.h mustn't be included directly"
+#endif
+
+/*******************************************************************************
+ * Types definitions
+ ******************************************************************************/
+
+/* ...component literal identifier */
+typedef const char * const xf_id_t;
+
+/* ...component descriptor (base structure) */
+typedef struct xf_component
+{
+    /* ...scheduler node */
+    xf_task_t               task;
+
+    /* ...component id */
+    u32                     id;
+    
+    /* ...message-processing function */
+    int                   (*entry)(struct xf_component *, xf_message_t *);
+
+    /* ...component destructor function */
+    int                   (*exit)(struct xf_component *, xf_message_t *);
+#ifndef XAF_ENABLE_NON_HIKEY    
+    /* ...output port accessor */
+    xf_output_port_t *    (*port)(struct xf_component *, u32);
+#endif
+    
+}   xf_component_t;
+
+/*******************************************************************************
+ * Helpers
+ ******************************************************************************/
+
+/* ...return core-id of the component */
+static inline u32 xf_component_core(xf_component_t *component)
+{
+    return XF_PORT_CORE(component->id);
+}
+
+/* ...schedule component execution */
+#define xf_component_schedule(c, dts)                                       \
+({                                                                          \
+    xf_sched_t *__sched = &XF_CORE_DATA(xf_component_core((c)))->sched;     \
+    xf_sched_put(__sched, &(c)->task, xf_sched_timestamp(__sched) + (dts)); \
+})
+
+/* ...cancel component execution */
+#define xf_component_cancel(c)                                          \
+({                                                                      \
+    xf_sched_t *__sched = &XF_CORE_DATA(xf_component_core((c)))->sched; \
+    xf_sched_cancel(__sched, &(c)->task);                               \
+})
+    
+/*******************************************************************************
+ * API functions
+ ******************************************************************************/
+
+/* ...component factory */
+extern xf_component_t * xf_component_factory(u32 core, xf_id_t id, u32 length);
diff --git a/hifi/xaf/hifi-dpf/include/xf-core.h b/hifi/xaf/hifi-dpf/include/xf-core.h
new file mode 100644
index 0000000..4daea6f
--- /dev/null
+++ b/hifi/xaf/hifi-dpf/include/xf-core.h
@@ -0,0 +1,150 @@
+/*******************************************************************************
+* Copyright (C) 2018 Cadence Design Systems, Inc.
+* 
+* Permission is hereby granted, free of charge, to any person obtaining
+* a copy of this software and associated documentation files (the
+* "Software"), to use this Software with Cadence processor cores only and 
+* not with any other processors and platforms, subject to
+* the following conditions:
+* 
+* The above copyright notice and this permission notice shall be included
+* in all copies or substantial portions of the Software.
+* 
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+******************************************************************************/
+
+/*******************************************************************************
+ * xf-core.h
+ *
+ * DSP processing framework core definitions
+ *
+ *******************************************************************************/
+
+#ifndef __XF_H
+#error "xf-core.h mustn't be included directly"
+#endif
+
+/*******************************************************************************
+ * Shared core data
+ ******************************************************************************/
+
+/* ...core data with read-only access from remote cores */
+typedef struct xf_core_ro_data
+{
+    /* ...platform-specific multi-core mutex data (want to have an array? - tbd) */
+    xf_mutex_t          lock;
+
+    /* ...opaque platform-specific IPC-data handle */
+    xf_ipc_handle_t     ipc;
+
+    /* ...shared memory message pool data - here? - tbd */
+    xf_msg_pool_t       pool;
+    
+    /* ...anything else? - tbd */
+
+}   xf_core_ro_data_t;
+
+/* ...core data with read-write access from remote cores */
+typedef struct xf_core_rw_data
+{
+    /* ...message queue containing local commands/responses */
+    xf_msg_queue_t      local;
+
+    /* ...message queue containing responses to remote proxy (if enabled) */
+    xf_msg_queue_t      remote;
+
+    /* ...pointer to shared memory data? anything else? - tbd */
+
+}   xf_core_rw_data_t;
+
+/* ...proper cache-line aligned core data */
+XF_ALIGNED_TYPEDEF(xf_core_ro_data_t, __xf_core_ro_data_t);
+XF_ALIGNED_TYPEDEF(xf_core_rw_data_t, __xf_core_rw_data_t);
+
+/*******************************************************************************
+ * Global data definition - hmm... - tbd
+ ******************************************************************************/
+
+/* ...per-core shared memory with read-only remote access */
+extern __xf_core_ro_data_t  xf_core_ro_data[XF_CFG_CORES_NUM];
+
+/* ...per-core shared memory with read-write remote access */
+extern __xf_core_rw_data_t  xf_core_rw_data[XF_CFG_CORES_NUM];
+
+/* ...shared read-only memory access */
+#define XF_CORE_RO_DATA(core)   ((xf_core_ro_data_t *)(&xf_core_ro_data[(core)]))
+
+/* ...shared read-write memory access */
+#define XF_CORE_RW_DATA(core)   ((xf_core_rw_data_t *)(&xf_core_rw_data[(core)]))
+
+/*******************************************************************************
+ * Local core data (not accessible from remote cores)
+ ******************************************************************************/
+
+/* ...component map entry */
+typedef union xf_cmap_link
+{
+    /* ...poiner to active client */
+    xf_component_t     *c;
+    
+    /* ...index to a client in the list (values 0..XF_CFG_MAX_CLIENTS) */
+    u32                 next;
+
+}   xf_cmap_link_t;
+
+/* ...per-core local data */
+typedef struct xf_core_data
+{
+    /* ...scheduler queue (sorted by execution timestamp) */
+    xf_sched_t          sched;
+
+    /* ...command/response queue for communication within local core (including ISRs) */
+    xf_msg_queue_t      queue;
+
+    /* ...pending response queue (submitted from ISR context) */
+    xf_msg_queue_t      response;
+    
+    /* ...per-core component mapping */
+    xf_cmap_link_t      cmap[XF_CFG_MAX_CLIENTS];
+
+    /* ...index of first free client */
+    u32                 free;
+    
+    /* ...local DSP memory pool */
+    xf_mm_pool_t        local_pool;
+    
+    /* ...shared AP-DSP memory pool (if enabled) */
+    xf_mm_pool_t        shared_pool;    
+
+    /* ...opaque system-specific shared memory data handle */
+    xf_shmem_handle_t   shmem;
+
+    /* ...scratch memory pointer */
+    void               *scratch;
+
+    /* ...tracer data */
+    xf_trace_data_t     trace;
+
+    /* ...any debugging information? for memory allocation etc... ? */
+
+}   xf_core_data_t;
+
+/*******************************************************************************
+ * API functions
+ ******************************************************************************/
+
+/* ...initialize per-core framework data */
+extern int  xf_core_init(u32 core);
+
+/* ...global data initialization function */
+extern int  xf_global_init(void);
+
+/* ...process core events */
+extern void xf_core_service(u32 core);
diff --git a/hifi/xaf/hifi-dpf/include/xf-debug.h b/hifi/xaf/hifi-dpf/include/xf-debug.h
new file mode 100644
index 0000000..c416cc0
--- /dev/null
+++ b/hifi/xaf/hifi-dpf/include/xf-debug.h
@@ -0,0 +1,216 @@
+/*******************************************************************************
+* Copyright (C) 2018 Cadence Design Systems, Inc.
+* 
+* Permission is hereby granted, free of charge, to any person obtaining
+* a copy of this software and associated documentation files (the
+* "Software"), to use this Software with Cadence processor cores only and 
+* not with any other processors and platforms, subject to
+* the following conditions:
+* 
+* The above copyright notice and this permission notice shall be included
+* in all copies or substantial portions of the Software.
+* 
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+******************************************************************************/
+
+/*******************************************************************************
+ * xf-debug.h
+ *
+ * Debugging interface for Xtensa Audio DSP codec server
+ *
+ *******************************************************************************/
+
+#ifndef __XF_H
+#error  "xf-debug.h mustn't be included directly"
+#endif
+
+#include "dsp_debug.h"
+
+/*******************************************************************************
+ * Auxiliary macros (put into "xf-types.h"?)
+ ******************************************************************************/
+
+#ifndef offset_of
+#define offset_of(type, member)         \
+    ((int)&(((const type *)(0))->member))
+#endif
+
+#ifndef container_of
+#define container_of(ptr, type, member) \
+    ((type *)((void *)(ptr) - offset_of(type, member)))
+#endif 
+
+/* ...next power-of-two calculation */
+#define xf_next_power_of_two(v)     __xf_power_of_two_1((v) - 1)
+#define __xf_power_of_two_1(v)      __xf_power_of_two_2((v) | ((v) >> 1))
+#define __xf_power_of_two_2(v)      __xf_power_of_two_3((v) | ((v) >> 2))
+#define __xf_power_of_two_3(v)      __xf_power_of_two_4((v) | ((v) >> 4))
+#define __xf_power_of_two_4(v)      __xf_power_of_two_5((v) | ((v) >> 8))
+#define __xf_power_of_two_5(v)      __xf_power_of_two_6((v) | ((v) >> 16))
+#define __xf_power_of_two_6(v)      ((v) + 1)
+
+/* ...check if non-zero value is a power-of-two */
+#define xf_is_power_of_two(v)       (((v) & ((v) - 1)) == 0)
+
+/*******************************************************************************
+ * Bug check for constant conditions (file scope)
+ ******************************************************************************/
+
+#define __C_BUG(n)      __C_BUG2(n)
+#define __C_BUG2(n)     __c_bug_##n
+#define C_BUG(expr)     typedef char __C_BUG(__LINE__)[(expr) ? -1 : 1]
+
+/*******************************************************************************
+ * Compilation-time types control
+ ******************************************************************************/
+
+#if XF_DEBUG
+#define __C_TYPE_CONTROL(d, type)       ((void) ((d) != (type*) 0))
+#else
+#define __C_TYPE_CONTROL(d, type)       ((void) 0)
+#endif
+
+/*******************************************************************************
+ * Unused variable
+ ******************************************************************************/
+
+#define C_UNUSED(v)                     (void)(0 ? (v) = (v), 1 : 0)
+
+/*******************************************************************************
+ * Auxiliary macros
+ ******************************************************************************/
+
+/* ...define a stub for unused declarator */
+#define __xf_stub(tag, line)            __xf_stub2(tag, line)
+#define __xf_stub2(tag, line)           typedef int __xf_##tag##_##line
+
+/* ...convert anything into string */
+#define __xf_string(x)                  __xf_string2(x)
+#define __xf_string2(x)                 #x
+
+/*******************************************************************************
+ * Tracing facility
+ ******************************************************************************/
+
+#if XF_TRACE
+
+/* ...tracing to communication processor */
+extern int  xf_trace(const char *format, ...) __attribute__((format (printf, 1, 2)));
+
+/* ...tracing facility initialization */
+extern void xf_trace_init(const char *banner);
+
+/* ...initialize tracing facility */
+//#define TRACE_INIT(banner)              (xf_trace_init(banner))
+#define TRACE_INIT(banner)              ({ dsp_debug_init(); DSP_TRACE("\n"banner); })
+
+/* ...trace tag definition */
+#define TRACE_TAG(tag, on)              enum { __xf_trace_##tag = on }
+
+/* ...check if the trace tag is enabled */
+#define TRACE_CFG(tag)                  (__xf_trace_##tag)
+
+/* ...tagged tracing primitive */
+#define TRACE(tag, fmt, ...)            (void)(__xf_trace_##tag ? __xf_trace(tag, __xf_format##fmt, ## __VA_ARGS__), 1 : 0)
+
+/*******************************************************************************
+ * Tagged tracing formats
+ ******************************************************************************/
+
+/* ...tracing primitive */
+#define __xf_trace(tag, fmt, ...)       \
+    ({ __attribute__((unused)) const char *__xf_tag = #tag; DSP_TRACE(fmt, ## __VA_ARGS__); })
+
+/* ...just a format string */
+#define __xf_format_n(fmt)              fmt
+
+/* ...module tag and trace tag shown */
+#define __xf_format_b(fmt)              "[%s.%s] " fmt, __xf_string(MODULE_TAG), __xf_tag
+
+/* ...module tag, trace tag, file name and line shown */
+#define __xf_format_x(fmt)              "[%s.%s] - %s@%d - " fmt,  __xf_string(MODULE_TAG), __xf_tag, __FILE__, __LINE__
+
+/*******************************************************************************
+ * Globally defined tags
+ ******************************************************************************/
+
+/* ...unconditionally OFF */
+TRACE_TAG(0, 0);
+
+/* ...unconditionally ON */
+TRACE_TAG(1, 1);
+
+/* ...error output - on by default */
+TRACE_TAG(ERROR, 1);
+
+#else
+
+#define TRACE_INIT(banner)              (void)0
+#define TRACE_TAG(tag, on)              __xf_stub(trace_##tag, __LINE__)
+#define TRACE_CFG(tag)			0
+#define TRACE(tag, fmt, ...)            (void)0
+#define __xf_trace(tag, fmt, ...)       (void)0
+
+#endif  /* XF_TRACE */
+
+/*******************************************************************************
+ * Bugchecks
+ ******************************************************************************/
+
+#if XF_DEBUG
+
+/* ...run-time bugcheck */
+#define BUG(cond, fmt, ...)                                     \
+do                                                              \
+{                                                               \
+    if (cond)                                                   \
+    {                                                           \
+        /* ...output message */                                 \
+        __xf_trace(BUG, __xf_format##fmt, ## __VA_ARGS__);      \
+                                                                \
+        /* ...and die (tbd) */                                  \
+        __xf_abort();                                           \
+    }                                                           \
+}                                                               \
+while (0)
+
+#else
+#define BUG(cond, fmt, ...)             (void)0
+#endif  /* XF_DEBUG */
+
+/*******************************************************************************
+ * Run-time error processing
+ ******************************************************************************/
+
+/* ...check the API call succeeds */
+#define XF_CHK_API(cond)                                \
+({                                                      \
+    int __ret;                                          \
+                                                        \
+    if ((__ret = (int)(cond)) < 0)                      \
+    {                                                   \
+        TRACE(ERROR, _x("API error: %d"), __ret);       \
+        return __ret;                                   \
+    }                                                   \
+    __ret;                                              \
+})
+
+/* ...check the condition is true */
+#define XF_CHK_ERR(cond, error)                         \
+({                                                      \
+    int __ret;                                          \
+                                                        \
+    if (!(__ret = (int)(cond)))                         \
+    {                                                   \
+        TRACE(ERROR, _x("check failed: %d"), __ret);    \
+        return (error);                                 \
+    }                                                   \
+    __ret;                                              \
+})
diff --git a/hifi/xaf/hifi-dpf/include/xf-io.h b/hifi/xaf/hifi-dpf/include/xf-io.h
new file mode 100644
index 0000000..17019a7
--- /dev/null
+++ b/hifi/xaf/hifi-dpf/include/xf-io.h
@@ -0,0 +1,298 @@
+/*******************************************************************************
+* Copyright (C) 2018 Cadence Design Systems, Inc.
+* 
+* Permission is hereby granted, free of charge, to any person obtaining
+* a copy of this software and associated documentation files (the
+* "Software"), to use this Software with Cadence processor cores only and 
+* not with any other processors and platforms, subject to
+* the following conditions:
+* 
+* The above copyright notice and this permission notice shall be included
+* in all copies or substantial portions of the Software.
+* 
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+******************************************************************************/
+
+/*******************************************************************************
+ * xf-io.h
+ *
+ * Input/output data ports
+ *
+ *******************************************************************************/
+
+#ifndef __XF_H
+#error "xf-io.h mustn't be included directly"
+#endif
+
+/*******************************************************************************
+ * Types definitions
+ ******************************************************************************/
+
+/* ...input port with interim buffer */
+typedef struct xf_input_port
+{
+    /* ...message queue */
+    xf_msg_queue_t          queue;
+    
+    /* ...internal contiguous buffer to store incoming data */
+    void                   *buffer;
+
+    /* ...size of internal buffer */
+    u32                     length;
+    
+    /* ...current writing position in the buffer */
+    u32                     filled;
+    
+    /* ...interim pointer to input message buffer */
+    void                   *access;
+    
+    /* ...remaining length of current input message */
+    u32                     remaining;
+    
+    /* ...execution flags */
+    u32                     flags;
+
+}   xf_input_port_t;
+
+/*******************************************************************************
+ * Input port flags
+ ******************************************************************************/
+
+/* ...data enabled */
+#define XF_INPUT_FLAG_CREATED           (1 << 0)
+
+/* ...data enabled */
+#define XF_INPUT_FLAG_ENABLED           (1 << 1)
+
+/* ...end-of-stream condition */
+#define XF_INPUT_FLAG_EOS               (1 << 2)
+
+/* ...stream completed */
+#define XF_INPUT_FLAG_DONE              (1 << 3)
+
+/* ...stream purging sequence */
+#define XF_INPUT_FLAG_PURGING           (1 << 4)
+
+/* ...base input port flags mask */
+#define __XF_INPUT_FLAGS(flags)         ((flags) & ((1 << 5) - 1))
+
+/* ...custom input port flag */
+#define __XF_INPUT_FLAG(f)              ((f) << 5)
+
+/*******************************************************************************
+ * Helpers
+ ******************************************************************************/
+
+/* ...test if input port is created */
+static inline int xf_input_port_created(xf_input_port_t *port)
+{
+    return (port->flags & XF_INPUT_FLAG_CREATED);
+}
+
+/* ...check if input port is ready (has pending message) */
+static inline int xf_input_port_ready(xf_input_port_t *port)
+{
+    return (xf_msg_queue_head(&port->queue) != NULL);
+}
+
+/* ...test if input port entered end-of-stream condition */
+static inline int xf_input_port_done(xf_input_port_t *port)
+{
+    return (port->flags & XF_INPUT_FLAG_DONE);
+}
+
+/* ...check if port is in bypass mode */
+static inline int xf_input_port_bypass(xf_input_port_t *port)
+{
+    return port->buffer == NULL;
+}
+
+/* ...bypass port only: check if there is a data available */
+static inline void * xf_input_port_data(xf_input_port_t *port)
+{
+    return port->access;
+}
+
+/* ...bypass port only: get remaining length of current message */
+static inline u32 xf_input_port_length(xf_input_port_t *port)
+{
+    return port->remaining;
+}
+
+/* ...non-bypass port only: get current fill level */
+static inline u32 xf_input_port_level(xf_input_port_t *port)
+{
+    return port->filled;
+}
+
+/*******************************************************************************
+ * Output port data
+ ******************************************************************************/
+
+typedef struct xf_output_port
+{
+    /* ...pending message queue */
+    xf_msg_queue_t          queue;
+
+    /* ...message pool */
+    xf_msg_pool_t           pool;
+
+    /* ...saved port unrouting message */
+    xf_message_t           *unroute;
+
+    /* ...length of output buffer */
+    u32                     length;
+
+    /* ...output port flags */
+    u32                     flags;
+
+}   xf_output_port_t;
+
+/*******************************************************************************
+ * Output port flags
+ ******************************************************************************/
+
+/* ...port is created */
+#define XF_OUTPUT_FLAG_CREATED          (1 << 0)
+
+/* ...port is routed */
+#define XF_OUTPUT_FLAG_ROUTED           (1 << 1)
+
+/* ...data enabled */
+#define XF_OUTPUT_FLAG_ENABLED          (1 << 2)
+
+/* ...stream completed */
+#define XF_OUTPUT_FLAG_DONE             (1 << 3)
+
+/* ...flushing sequence is on-going */
+#define XF_OUTPUT_FLAG_FLUSHING         (1 << 4)
+
+/* ...port is idle - no outstanding messages */
+#define XF_OUTPUT_FLAG_IDLE             (1 << 5)
+
+/* ...port is being unrouted */
+#define XF_OUTPUT_FLAG_UNROUTING        (1 << 6)
+
+/* ...base output port flags accessor */
+#define __XF_OUTPUT_FLAGS(flags)        ((flags) & ((1 << 7) - 1))
+
+/* ...custom output port flag */
+#define __XF_OUTPUT_FLAG(f)             ((f) << 7)
+
+/*******************************************************************************
+ * Helpers
+ ******************************************************************************/
+
+/* ...test if input port is created */
+static inline int xf_output_port_created(xf_output_port_t *port)
+{
+    return (port->flags & XF_OUTPUT_FLAG_CREATED);
+}
+
+/* ...check if port is routed */
+static inline int xf_output_port_routed(xf_output_port_t *port)
+{
+    return ((port->flags & XF_OUTPUT_FLAG_ROUTED) != 0);
+}
+
+/* ...check if port unrouting sequence is ongoing */
+static inline int xf_output_port_unrouting(xf_output_port_t *port)
+{
+    return ((port->flags & XF_OUTPUT_FLAG_UNROUTING) != 0);
+}
+
+/* ...check if port is idle (owns all data buffers) */
+static inline int xf_output_port_idle(xf_output_port_t *port)
+{
+    return ((port->flags & XF_OUTPUT_FLAG_IDLE) != 0);
+}
+
+/* ...check if port is ready (has output buffers - better use flags - tbd) */
+static inline int xf_output_port_ready(xf_output_port_t *port)
+{
+    return (xf_msg_queue_head(&port->queue) != NULL && !xf_output_port_unrouting(port));
+}
+
+/* ...output port flow-control message accessor */
+static inline xf_message_t * xf_output_port_control_msg(xf_output_port_t *port)
+{
+    return xf_msg_pool_item(&port->pool, 0);
+}
+
+/*******************************************************************************
+ * Input port API
+ ******************************************************************************/
+
+/* ...initialize input port structure */
+extern int  xf_input_port_init(xf_input_port_t *port, u32 size, u32 align, u32 core);
+
+/* ...put message into input port queue */
+extern int  xf_input_port_put(xf_input_port_t *port, xf_message_t *m);
+
+/* ...fill-in required amount of data into input port buffer */
+extern int  xf_input_port_fill(xf_input_port_t *port);
+
+/* ...pad input buffer with given value */
+extern void xf_input_port_pad(xf_input_port_t *port, u8 pad);
+
+/* ...consume bytes from input buffer */
+extern void xf_input_port_consume(xf_input_port_t *port, u32 n);
+
+/* ...purge input port queue */
+extern void xf_input_port_purge(xf_input_port_t *port);
+
+/* ...save flow-control message for propagated input port purging sequence */
+extern void xf_input_port_control_save(xf_input_port_t *port, xf_message_t *m);
+
+/* ...complete input port purging sequence */
+extern void xf_input_port_purge_done(xf_input_port_t *port);
+
+/* ...destroy input port data */
+extern void xf_input_port_destroy(xf_input_port_t *port, u32 core);
+
+/*******************************************************************************
+ * Output port API
+ ******************************************************************************/
+
+/* ...initialize output port structure */
+extern int  xf_output_port_init(xf_output_port_t *port, u32 size);
+
+/* ...put next message to the output port */
+extern int  xf_output_port_put(xf_output_port_t *port, xf_message_t *m);
+
+/* ...get data buffer of output message */
+extern void * xf_output_port_data(xf_output_port_t *port);
+
+/* ...route output port */
+extern int xf_output_port_route(xf_output_port_t *port, u32 id, u32 n, u32 length, u32 align);
+
+/* ...unroute output port */
+extern void xf_output_port_unroute(xf_output_port_t *port);
+
+/* ...start output port unrouting sequence */
+extern void xf_output_port_unroute_start(xf_output_port_t *port, xf_message_t *m);
+
+/* ...complete port unrouting sequence */
+extern void xf_output_port_unroute_done(xf_output_port_t *port);
+
+/* ...produce output message marking amount of bytes produced */
+extern int  xf_output_port_produce(xf_output_port_t *port, u32 n);
+
+/* ...purge output port */
+extern void xf_output_port_purge(xf_output_port_t *port);
+
+/* ...flush output port and return non-zero result if sequence is over */
+extern int xf_output_port_flush(xf_output_port_t *port, u32 opcode);
+
+/* ...complete flushing sequence */
+extern void xf_output_port_flush_done(xf_output_port_t *port);
+
+/* ...destroy output port data */
+extern void xf_output_port_destroy(xf_output_port_t *port, u32 core);
diff --git a/hifi/xaf/hifi-dpf/include/xf-mm.h b/hifi/xaf/hifi-dpf/include/xf-mm.h
new file mode 100644
index 0000000..712ea14
--- /dev/null
+++ b/hifi/xaf/hifi-dpf/include/xf-mm.h
@@ -0,0 +1,142 @@
+/*******************************************************************************
+* Copyright (C) 2018 Cadence Design Systems, Inc.
+* 
+* Permission is hereby granted, free of charge, to any person obtaining
+* a copy of this software and associated documentation files (the
+* "Software"), to use this Software with Cadence processor cores only and 
+* not with any other processors and platforms, subject to
+* the following conditions:
+* 
+* The above copyright notice and this permission notice shall be included
+* in all copies or substantial portions of the Software.
+* 
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+******************************************************************************/
+
+/*******************************************************************************
+ * xf-mm.h
+ *
+ * Generic dynamic memory manager (based on rb-tree index)
+ *
+ *******************************************************************************/
+
+#ifndef __XF_H
+#error "xf-mem.h mustn't be included directly"
+#endif
+
+/*******************************************************************************
+ * Includes
+ ******************************************************************************/
+
+/* ...red-black trees library */
+#include "lib/rbtree.h"
+
+/*******************************************************************************
+ * Cache-line aligned types
+ ******************************************************************************/
+
+/* ...proper cache-line alignment */
+#define XF_ALIGNED(size)                            \
+    (((size) + XF_PROXY_ALIGNMENT - 1) & ~(XF_PROXY_ALIGNMENT - 1))
+
+/* ...cache-line aligned type identifier */
+#define XF_ALIGNED_TYPE(type)                       \
+    __xf_aligned_##type
+
+/* ...definition of cache-line aligned type */
+#define XF_ALIGNED_TYPEDEF(type, name)              \
+typedef union                                       \
+{                                                   \
+    /* ...item of original type */                  \
+    type        __obj;                              \
+                                                    \
+    /* ...padding to cache-line */                  \
+    u8          __pad[XF_ALIGNED(sizeof(type))];    \
+                                                    \
+}   XF_ALIGNED_TYPE(type), name __xf_shmem__
+
+/* ...accessor to original type */
+#define XF_ALIGNED_OBJ(p)                           \
+    (&(p)->__obj)
+
+#define XF_IS_ALIGNED(p)                            \
+    (((u32)(p) & (XF_PROXY_ALIGNMENT - 1)) == 0)
+
+/*******************************************************************************
+ * Memory pool description
+ ******************************************************************************/
+
+/* ...memory allocator data */
+typedef struct xf_mm_pool
+{
+    /* ...free blocks map sorted by block length */
+    rb_tree_t       l_map;
+    
+    /* ...free blocks map sorted by address of the block */
+    rb_tree_t       a_map;
+
+    /* ...address of memory pool (32-bytes aligned at least); need that? - tbd */
+    void           *addr;
+
+    /* ...length of the pool (multiple of descriptor size); need that? - tbd */
+    u32             size;    
+    
+}   xf_mm_pool_t;
+
+/* ...descriptor of free memory block */
+typedef struct xf_mm_block
+{
+    /* ...rb-tree node in a block-length map */
+    rb_node_t       l_node;
+    
+    /* ...rb-tree node in a block-address map */
+    rb_node_t       a_node;
+    
+}   xf_mm_block_t;
+
+/* ...properly aligned allocation unit */
+typedef u8 xf_mm_item[xf_next_power_of_two(sizeof(xf_mm_block_t))];
+
+/* ...macro to assure proper alignment of dynamically allocated data */
+#define XF_MM(size)         (((size) + sizeof(xf_mm_item) - 1) & ~(sizeof(xf_mm_item) - 1))
+
+/* ...check if memory is properly aligned */
+#define XF_MM_ALIGNED(size) (!((size) & (sizeof(xf_mm_item) - 1)))
+
+/* ...alignement definition */
+#define __xf_mm__  __attribute__((__aligned__(sizeof(xf_mm_item))))
+    
+/*******************************************************************************
+ * Dynamically allocated buffer
+ ******************************************************************************/
+
+/* ...memory allocation metadata */
+typedef struct xf_mm_buffer
+{
+    /* ...allocation address */
+    void           *addr;
+    
+    /* ...length */
+    u32             size;
+    
+}   __xf_mm__ xf_mm_buffer_t;
+
+/*******************************************************************************
+ * API functions
+ ******************************************************************************/
+
+/* ...pool initialization */
+extern int      xf_mm_init(xf_mm_pool_t *pool, void *addr, u32 size);
+
+/* ...block allocation */
+extern void *   xf_mm_alloc(xf_mm_pool_t *pool, u32 size);
+
+/* ...block deallocation */
+extern void     xf_mm_free(xf_mm_pool_t *pool, void *addr, u32 size);
diff --git a/hifi/xaf/hifi-dpf/include/xf-msg.h b/hifi/xaf/hifi-dpf/include/xf-msg.h
new file mode 100644
index 0000000..3448425
--- /dev/null
+++ b/hifi/xaf/hifi-dpf/include/xf-msg.h
@@ -0,0 +1,252 @@
+/*******************************************************************************
+* Copyright (C) 2018 Cadence Design Systems, Inc.
+* 
+* Permission is hereby granted, free of charge, to any person obtaining
+* a copy of this software and associated documentation files (the
+* "Software"), to use this Software with Cadence processor cores only and 
+* not with any other processors and platforms, subject to
+* the following conditions:
+* 
+* The above copyright notice and this permission notice shall be included
+* in all copies or substantial portions of the Software.
+* 
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+******************************************************************************/
+
+/*******************************************************************************
+ * xf-msg.h
+ *
+ * Internal messages, and message queues.
+ *
+ *******************************************************************************/
+
+#ifndef __XF_H
+#error "xf-msg.h mustn't be included directly"
+#endif
+
+/*******************************************************************************
+ * Types definitions
+ ******************************************************************************/
+
+/* ...forward declaration */
+typedef struct xf_message   xf_message_t;
+
+/* ...audio command/response message (internal to DSP processing framework) */
+struct xf_message
+{
+    /* ...pointer to next item in the list */
+    xf_message_t       *next;
+
+    /* ...shmem session_id */
+    u32                 id;
+
+    /* ...operation code */
+    u32                 opcode;
+
+    /* ...length of attached message buffer */
+    u32                 length;
+
+    /* ...message buffer (translated virtual address) */
+    void               *buffer;
+#ifndef XAF_ENABLE_NON_HIKEY
+    uint64_t           v_buffer;
+#endif
+};
+
+/* ...cache-line aligned message buffer */
+XF_ALIGNED_TYPEDEF(xf_message_t, __xf_message_t);
+
+/* ...message pool definition */
+typedef struct xf_msg_pool
+{
+    /* ...array of aligned messages */
+    __xf_message_t     *p;
+
+    /* ...pointer to first free item in the pool */
+    __xf_message_t     *head;
+
+    /* ...total size of the pool */
+    u32                 n;
+
+}   xf_msg_pool_t;
+
+/* ...message accessor */
+static inline xf_message_t * xf_msg_pool_item(xf_msg_pool_t *pool, u32 i)
+{
+    return (xf_message_t *) &pool->p[i];
+}
+
+/*******************************************************************************
+ * Message queue data
+ ******************************************************************************/
+
+/* ...message queue (single-linked FIFO list) */
+typedef struct  xf_msg_queue
+{
+    /* ...head of the queue */
+    xf_message_t       *head;
+
+    /* ...tail pointer */
+    xf_message_t       *tail;
+
+}   xf_msg_queue_t;
+
+/*******************************************************************************
+ * Message queue API
+ ******************************************************************************/
+
+/* ...initialize message queue */
+static inline void  xf_msg_queue_init(xf_msg_queue_t *queue)
+{
+    queue->head = queue->tail = NULL;
+}
+
+/* ...push message in FIFO queue */
+static inline int xf_msg_enqueue(xf_msg_queue_t *queue, xf_message_t *m)
+{
+    int     empty = (queue->head == NULL);
+
+    /* ...set list terminating pointer */
+    m->next = NULL;
+
+    if (empty)
+        queue->head = m;
+    else
+        queue->tail->next = m;
+
+    /* ...advance tail pointer */
+    queue->tail = m;
+
+    /* ...return emptiness status */
+    return empty;
+}
+
+#define xf_msg_enqueue(queue, m)                                        \
+({                                                                      \
+    BUG((m)->next != NULL, _x("message is active: %p"), (m));           \
+    (xf_msg_enqueue)((queue), (m));                                     \
+})
+
+/* ...retrieve (pop) next message from FIFO queue */
+static inline xf_message_t * xf_msg_dequeue(xf_msg_queue_t *queue)
+{
+    xf_message_t   *m = queue->head;
+
+    /* ...check if there is anything in the queue and dequeue it */
+    if (m != NULL)
+    {
+        /* ...advance head to the next entry in the queue */
+        if ((queue->head = m->next) == NULL)
+            queue->tail = NULL;
+
+        /* ...debug - wipe out next pointer */
+        m->next = NULL;
+    }
+
+    return m;
+}
+
+/* ...test if message queue is empty */
+static inline int xf_msg_queue_empty(xf_msg_queue_t *queue)
+{
+    return (queue->head == NULL);
+}
+
+/* ...get message queue head pointer */
+static inline xf_message_t * xf_msg_queue_head(xf_msg_queue_t *queue)
+{
+    return queue->head;
+}
+
+/* ...check if message belongs to a pool */
+static inline int xf_msg_from_pool(xf_msg_pool_t *pool, xf_message_t *m)
+{
+    return (u32)((__xf_message_t*)m - pool->p) < pool->n;   
+}
+
+/*******************************************************************************
+ * Global message pool API
+ ******************************************************************************/
+
+/* ...submit message execution on local DSP core */
+extern void xf_msg_schedule(xf_message_t *m, u32 ts);
+
+/* ...schedule message execution from ISR context */
+extern void xf_msg_schedule_isr(xf_message_t *m);
+
+/* ...submit message for execution on some DSP */
+extern void xf_msg_submit(xf_message_t *m);
+
+/* ...cancel local (scheduled on current core) message execution */
+extern void xf_msg_cancel(xf_message_t *m);
+
+/* ...complete message processing */
+extern void xf_msg_complete(xf_message_t *m);
+
+/* ...complete message from ISR context */
+extern void xf_msg_complete_isr(xf_message_t *m);
+
+/* ...allocate message pool on specific core */
+extern int  xf_msg_pool_init(xf_msg_pool_t *pool, u32 n, u32 core);
+
+/* ...allocate message from a pool (no concurrent access from other cores) */
+extern xf_message_t * xf_msg_pool_get(xf_msg_pool_t *pool);
+
+/* ...return message back to the pool (no concurrent access from other cores) */
+extern void xf_msg_pool_put(xf_msg_pool_t *pool, xf_message_t *m);
+
+/* ...destroy message pool */
+extern void xf_msg_pool_destroy(xf_msg_pool_t *pool, u32 core);
+
+/* ...indicate whether pool of free messages is empty */
+extern int  xf_message_pool_empty(void);
+
+/* ...initialize global pool of messages */
+extern void xf_message_pool_init(void);
+
+/*******************************************************************************
+ * Auxiliary helpers
+ ******************************************************************************/
+
+/* ...send response message to caller */
+static inline void xf_response(xf_message_t *m)
+{
+    xf_msg_complete(m);
+}
+
+/* ...send response message with output buffer */
+static inline void xf_response_data(xf_message_t *m, u32 length)
+{
+    /* ...adjust message output buffer */
+    m->length = length;
+
+    /* ...return message to originator */
+    xf_msg_complete(m);
+}
+
+/* ...send generic "ok" message (no data buffer) */
+static inline void xf_response_ok(xf_message_t *m)
+{
+    /* ...adjust message output buffer */
+    m->length = 0;
+
+    /* ...return message to originator */
+    xf_msg_complete(m);
+}
+
+/* ...send error-response message */
+static inline void xf_response_err(xf_message_t *m)
+{
+    /* ...set generic error message */
+    m->opcode = XF_UNREGISTER, m->length = 0;
+
+    /* ...return message to originator */
+    xf_msg_complete(m);
+}
diff --git a/hifi/xaf/hifi-dpf/include/xf-opcode.h b/hifi/xaf/hifi-dpf/include/xf-opcode.h
new file mode 100644
index 0000000..6fa0846
--- /dev/null
+++ b/hifi/xaf/hifi-dpf/include/xf-opcode.h
@@ -0,0 +1,290 @@
+/*******************************************************************************
+* Copyright (C) 2018 Cadence Design Systems, Inc.
+* 
+* Permission is hereby granted, free of charge, to any person obtaining
+* a copy of this software and associated documentation files (the
+* "Software"), to use this Software with Cadence processor cores only and 
+* not with any other processors and platforms, subject to
+* the following conditions:
+* 
+* The above copyright notice and this permission notice shall be included
+* in all copies or substantial portions of the Software.
+* 
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+******************************************************************************/
+
+/*******************************************************************************
+ * xf-opcode.h
+ *
+ * Xtensa audio processing framework. Message API
+ *
+ ******************************************************************************/
+
+#ifndef __XF_H
+#error "xf-opcode.h mustn't be included directly"
+#endif
+
+/*******************************************************************************
+ * Message routing composition - move somewhere else - tbd
+ ******************************************************************************/
+
+/* ...adjust IPC client of message going from user-space */
+#define XF_MSG_AP_FROM_USER(id, client) \
+    (((id) & ~(0xF << 2)) | (client))
+
+/* ...wipe out IPC client from message going to user-space */
+#define XF_MSG_AP_TO_USER(id)           \
+    ((id) & ~(0xF << 18))
+
+/* ...port specification (12 bits) */
+#define __XF_PORT_SPEC(core, id, port)  ((core) | ((id) << 2) | ((port) << 8))
+#define __XF_PORT_SPEC2(id, port)       ((id) | ((port) << 8))
+#define XF_PORT_CORE(spec)              ((spec) & 0x3)
+#define XF_PORT_CLIENT(spec)            (((spec) >> 2) & 0x3F)
+#define XF_PORT_ID(spec)                (((spec) >> 8) & 0xF)
+
+/* ...message id contains source and destination ports specification */
+#define __XF_MSG_ID(src, dst)           (((src) & 0xFFFF) | (((dst) & 0xFFFF) << 16))
+#define XF_MSG_SRC(id)                  (((id) >> 0) & 0xFFFF)
+#define XF_MSG_SRC_CORE(id)             (((id) >> 0) & 0x3)
+#define XF_MSG_SRC_CLIENT(id)           (((id) >> 2) & 0x3F)
+#define XF_MSG_SRC_ID(id)               (((id) >> 0) & 0xFF)
+#define XF_MSG_SRC_PORT(id)             (((id) >> 8) & 0xF)
+#define XF_MSG_SRC_PROXY(id)            (((id) >> 15) & 0x1)
+#define XF_MSG_DST(id)                  (((id) >> 16) & 0xFFFF)
+#define XF_MSG_DST_CORE(id)             (((id) >> 16) & 0x3)
+#define XF_MSG_DST_CLIENT(id)           (((id) >> 18) & 0x3F)
+#define XF_MSG_DST_ID(id)               (((id) >> 16) & 0xFF)
+#define XF_MSG_DST_PORT(id)             (((id) >> 24) & 0xF)
+#define XF_MSG_DST_PROXY(id)            (((id) >> 31) & 0x1)
+
+/* ...special treatment of AP-proxy destination field */
+#define XF_AP_IPC_CLIENT(id)            (((id) >> 18) & 0xF)
+#define XF_AP_CLIENT(id)                (((id) >> 22) & 0x1FF)
+#define __XF_AP_PROXY(core)             ((core) | 0x8000)
+#define __XF_DSP_PROXY(core)            ((core) | 0x8000)
+#define __XF_AP_CLIENT(core, client)    ((core) | ((client) << 6) | 0x8000)
+
+/* ...check if DSP message is shared between cores */
+#define XF_MSG_SHARED(id)               \
+    ({ u32 __id = (id); (XF_CFG_CORES_NUM > 1 ? (__id ^ (__id >> 16)) & 0x3 : 0); })
+
+/*******************************************************************************
+ * Opcode composition
+ ******************************************************************************/
+
+/* ...opcode composition with command/response data tags */
+#define __XF_OPCODE(c, r, op)           (((c) << 31) | ((r) << 30) | ((op) & 0x3F))
+
+/* ...accessors */
+#define XF_OPCODE_CDATA(opcode)         ((opcode) & (1 << 31))
+#define XF_OPCODE_RDATA(opcode)         ((opcode) & (1 << 30))
+#define XF_OPCODE_TYPE(opcode)          ((opcode) & (0x3F))
+
+/*******************************************************************************
+ * Opcode types
+ ******************************************************************************/
+
+/* ...unregister client */
+#define XF_UNREGISTER                   __XF_OPCODE(0, 0, 0)
+
+/* ...register client at proxy */
+#define XF_REGISTER                     __XF_OPCODE(1, 0, 1)
+
+/* ...port routing command */
+#define XF_ROUTE                        __XF_OPCODE(1, 0, 2)
+
+/* ...port unrouting command */
+#define XF_UNROUTE                      __XF_OPCODE(1, 0, 3)
+
+/* ...shared buffer allocation */
+#define XF_ALLOC                        __XF_OPCODE(0, 0, 4)
+
+/* ...shared buffer freeing */
+#define XF_FREE                         __XF_OPCODE(0, 0, 5)
+
+/* ...set component parameters */
+#define XF_SET_PARAM                    __XF_OPCODE(1, 0, 6)
+
+/* ...get component parameters */
+#define XF_GET_PARAM                    __XF_OPCODE(1, 1, 7)
+
+/* ...input buffer reception */
+#define XF_EMPTY_THIS_BUFFER            __XF_OPCODE(1, 0, 8)
+
+/* ...output buffer reception */
+#define XF_FILL_THIS_BUFFER             __XF_OPCODE(0, 1, 9)
+
+/* ...flush specific port */
+#define XF_FLUSH                        __XF_OPCODE(0, 0, 10)
+
+/* ...start component operation */
+#define XF_START                        __XF_OPCODE(0, 0, 11)
+
+/* ...stop component operation */
+#define XF_STOP                         __XF_OPCODE(0, 0, 12)
+
+/* ...pause component operation */
+#define XF_PAUSE                        __XF_OPCODE(0, 0, 13)
+
+/* ...resume component operation */
+#define XF_RESUME                       __XF_OPCODE(0, 0, 14)
+
+/* ...extended parameter setting function */
+#define XF_SET_PARAM_EXT                __XF_OPCODE(1, 1, 15)
+
+/* ...extended parameter retrieval function */
+#define XF_GET_PARAM_EXT                __XF_OPCODE(1, 1, 16)
+
+/* ...total amount of supported decoder commands */
+#define __XF_OP_NUM                     17
+
+/*******************************************************************************
+ * XF_START message definition
+ ******************************************************************************/
+
+typedef struct xf_start_msg
+{
+    /* ...effective sample rate */
+    u32             sample_rate;
+
+    /* ...number of channels */
+    u32             channels;
+    
+    /* ...sample width */
+    u32             pcm_width;
+    
+    /* ...minimal size of intput buffer */
+    u32             input_length;
+    
+    /* ...size of output buffer */
+    u32             output_length;
+    
+}   __attribute__((__packed__)) xf_start_msg_t;
+    
+/*******************************************************************************
+ * XF_GET_PARAM message
+ ******************************************************************************/
+
+/* ...message body (command/response) */
+typedef union xf_get_param_msg
+{
+    /* ...command structure */
+    struct
+    {
+        /* ...array of parameters requested */
+        u32                 id[0];
+
+    }   __attribute__((__packed__)) c;
+
+    /* ...response structure */
+    struct
+    {
+        /* ...array of parameters values */
+        u32                 value[0];
+
+    }   __attribute__((__packed__)) r;
+
+}   xf_get_param_msg_t;
+
+/* ...length of the XF_GET_PARAM command/response */
+#define XF_GET_PARAM_CMD_LEN(params)    (sizeof(u32) * (params))
+#define XF_GET_PARAM_RSP_LEN(params)    (sizeof(u32) * (params))
+
+/*******************************************************************************
+ * XF_SET_PARAM message
+ ******************************************************************************/
+
+/* ...component initialization parameter */
+typedef struct xf_set_param_item
+{
+    /* ...index of parameter passed to SET_CONFIG_PARAM call */
+    u32                 id;
+
+    /* ...value of parameter */
+    u32                 value;
+
+}   __attribute__ ((__packed__)) xf_set_param_item_t;
+
+/* ...message body (no response message? - tbd) */
+typedef struct xf_set_param_msg
+{
+    /* ...command message */
+    xf_set_param_item_t     item[0];
+
+}   __attribute__ ((__packed__)) xf_set_param_msg_t;
+
+/* ...length of the command message */
+#define XF_SET_PARAM_CMD_LEN(params)    (sizeof(xf_set_param_item_t) * (params))
+
+/*******************************************************************************
+ * XF_SET_PARAM_EXT/XF_GET_PARAM_EXT message
+ ******************************************************************************/
+
+/* ...extended parameter descriptor */
+typedef struct xf_ext_param_desc
+{
+    /* ...index of parameter passed to SET/GET_CONFIG_PARAM call (16-bits only) */
+    u16                 id;
+
+    /* ...length of embedded input/output parameter data (in bytes) */
+    u16                 length;
+
+}   __attribute__ ((__packed__, __aligned__(4))) xf_ext_param_desc_t;
+    
+/* ...message body (no response message? - tbd) */
+typedef struct xf_ext_param_msg
+{
+    /* ...extended parameter descriptor */
+    xf_ext_param_desc_t     desc;
+
+    /* ...parameter data (in the format expected by codec; 4 bytes aligned) */
+    u8                      data[0];
+
+}   __attribute__ ((__packed__, __aligned__(4))) xf_ext_param_msg_t;
+
+/*******************************************************************************
+ * XF_ROUTE definition
+ ******************************************************************************/
+
+/* ...port routing command */
+typedef struct xf_route_port_msg
+{
+	/* ...source port specification */
+	u32                 src;
+
+	/* ...destination port specification */
+	u32                 dst;
+
+	/* ...number of buffers to allocate */
+	u32                 alloc_number;
+
+	/* ...length of buffer to allocate */
+	u32                 alloc_size;
+
+	/* ...alignment restriction for a buffer */
+	u32                 alloc_align;
+
+}	__attribute__((__packed__)) xf_route_port_msg_t;
+
+/*******************************************************************************
+ * XF_UNROUTE definition
+ ******************************************************************************/
+
+/* ...port unrouting command */
+typedef struct xf_unroute_port_msg
+{
+	/* ...source port specification */
+	u32                 src;
+
+	/* ...destination port specification */
+	u32                 dst;
+
+}	__attribute__((__packed__)) xf_unroute_port_msg_t;
diff --git a/hifi/xaf/hifi-dpf/include/xf-plugin.h b/hifi/xaf/hifi-dpf/include/xf-plugin.h
new file mode 100644
index 0000000..5805e9f
--- /dev/null
+++ b/hifi/xaf/hifi-dpf/include/xf-plugin.h
@@ -0,0 +1,48 @@
+/*******************************************************************************
+* Copyright (C) 2018 Cadence Design Systems, Inc.
+* 
+* Permission is hereby granted, free of charge, to any person obtaining
+* a copy of this software and associated documentation files (the
+* "Software"), to use this Software with Cadence processor cores only and 
+* not with any other processors and platforms, subject to
+* the following conditions:
+* 
+* The above copyright notice and this permission notice shall be included
+* in all copies or substantial portions of the Software.
+* 
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+******************************************************************************/
+
+/*******************************************************************************
+ * xf-plugin.h
+ *
+ * Xtensa audio processing framework - plugin infrastructure.
+ *
+ ******************************************************************************/
+
+#ifdef __XF_H
+#error "xf-plugin.h cannot be used together with xf.h"
+#endif
+
+#define __XF_H
+
+/*******************************************************************************
+ * Plugin debugging interface
+ ******************************************************************************/
+
+/* ...platform-specific HAL */
+#include "xf-hal.h"
+#ifdef XAF_ENABLE_NON_HIKEY
+//#define XF_TRACE        1
+#define XF_DEBUG        1
+#endif
+
+/* ...debugging facilities */
+#include "xf-debug.h"
diff --git a/hifi/xaf/hifi-dpf/include/xf-proxy.h b/hifi/xaf/hifi-dpf/include/xf-proxy.h
new file mode 100644
index 0000000..0260749
--- /dev/null
+++ b/hifi/xaf/hifi-dpf/include/xf-proxy.h
@@ -0,0 +1,102 @@
+/*******************************************************************************
+* Copyright (C) 2018 Cadence Design Systems, Inc.
+* 
+* Permission is hereby granted, free of charge, to any person obtaining
+* a copy of this software and associated documentation files (the
+* "Software"), to use this Software with Cadence processor cores only and 
+* not with any other processors and platforms, subject to
+* the following conditions:
+* 
+* The above copyright notice and this permission notice shall be included
+* in all copies or substantial portions of the Software.
+* 
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+******************************************************************************/
+
+/*******************************************************************************
+ * xf-proxy.h
+ *
+ * Proxy commmand/response messages
+ *
+ *******************************************************************************/
+
+#ifndef __XF_H
+#error "xf-proxy.h mustn't be included directly"
+#endif
+
+/*******************************************************************************
+ * Types definitions
+ ******************************************************************************/
+#ifdef XAF_ENABLE_NON_HIKEY
+/* ...command/response message */
+typedef struct xf_proxy_message
+{
+    /* ...session ID */
+    uint32_t                 session_id;
+
+    /* ...proxy API command/reponse code */
+    uint32_t                 opcode;
+
+    /* ...length of attached buffer */
+    uint32_t                 length;
+
+    /* ...physical address of message buffer */
+    uint64_t                 address;
+    uint64_t                 v_address;
+
+}   __attribute__((__packed__)) xf_proxy_message_t;
+#else
+/* ...command/response message */
+typedef struct xf_proxy_message
+{
+    /* ...session ID */
+    uint32_t                 session_id;
+
+    /* ...proxy API command/reponse code */
+    uint32_t                 opcode;
+
+    /* ...length of attached buffer */
+    uint32_t                 length;
+
+    /* ...physical address of message buffer */
+    uint64_t                 address;
+    uint64_t                 v_address;
+
+}   __attribute__((__packed__)) xf_proxy_message_t;
+#endif
+/*******************************************************************************
+ * Ring buffer support
+ ******************************************************************************/
+
+/* ...total length of shared memory queue (for commands and responses) */
+#define XF_PROXY_MESSAGE_QUEUE_LENGTH   (1 << 8)
+
+/* ...index mask */
+#define XF_PROXY_MESSAGE_QUEUE_MASK     0xFF
+
+/* ...ring-buffer index */
+#define __XF_QUEUE_IDX(idx, counter)    \
+    (((idx) & XF_PROXY_MESSAGE_QUEUE_MASK) | ((counter) << 16))
+
+/* ...retrieve ring-buffer index */
+#define XF_QUEUE_IDX(idx)               \
+    ((idx) & XF_PROXY_MESSAGE_QUEUE_MASK)
+
+/* ...increment ring-buffer index */
+#define XF_QUEUE_ADVANCE_IDX(idx)       \
+    (((idx) + 0x10001) & (0xFFFF0000 | XF_PROXY_MESSAGE_QUEUE_MASK))
+
+/* ...test if ring buffer is empty */
+#define XF_QUEUE_EMPTY(read, write)     \
+    ((read) == (write))
+
+/* ...test if ring buffer is full */
+#define XF_QUEUE_FULL(read, write)      \
+    ((write) == (read) + (XF_PROXY_MESSAGE_QUEUE_LENGTH << 16))
diff --git a/hifi/xaf/hifi-dpf/include/xf-sched.h b/hifi/xaf/hifi-dpf/include/xf-sched.h
new file mode 100644
index 0000000..3c04436
--- /dev/null
+++ b/hifi/xaf/hifi-dpf/include/xf-sched.h
@@ -0,0 +1,98 @@
+/*******************************************************************************
+* Copyright (C) 2018 Cadence Design Systems, Inc.
+* 
+* Permission is hereby granted, free of charge, to any person obtaining
+* a copy of this software and associated documentation files (the
+* "Software"), to use this Software with Cadence processor cores only and 
+* not with any other processors and platforms, subject to
+* the following conditions:
+* 
+* The above copyright notice and this permission notice shall be included
+* in all copies or substantial portions of the Software.
+* 
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+******************************************************************************/
+
+/*******************************************************************************
+ * xf-sched.h
+ *
+ * Non-preemptive earliest-deadline-first scheduler
+ *
+ ******************************************************************************/
+
+#ifndef __XF_SCHED_H
+#define __XF_SCHED_H
+
+/*******************************************************************************
+ * Types definitions
+ ******************************************************************************/
+
+/* ...scheduler data */
+typedef rb_tree_t   xf_sched_t;
+
+/* ...scheduling item */
+typedef rb_node_t   xf_task_t;
+   
+/*******************************************************************************
+ * Helpers
+ ******************************************************************************/
+
+/* ...retrieve timestamp from task handle */
+static inline u32 xf_task_timestamp(xf_task_t *t)
+{
+    /* ...wipe out last bit of "color" */
+    return (((rb_node_t *)t)->color & ~1);
+}
+
+/* ...set task decoding timestamp */
+static inline u32 xf_task_timestamp_set(xf_task_t *t, u32 ts)
+{
+    /* ...technically, wiping out last bit of timestamp is not needed */
+    return (((rb_node_t *)t)->color = ts);
+}
+
+/* ...compare two timestamps with respect to wrap-around */
+static inline int xf_timestamp_before(u32 t0, u32 t1)
+{
+    /* ...distance between active items is never high */
+    return ((s32)(t0 - t1) < 0);
+}
+
+/* ...current scheduler timestamp */
+static inline u32 xf_sched_timestamp(xf_sched_t *sched)
+{
+    /* ...don't quite care about last bit */
+    return ((rb_tree_t *)sched)->root.color;
+}
+
+/* ...set scheduler timestamp */
+static inline u32 xf_sched_timestamp_set(xf_sched_t *sched, u32 ts)
+{
+    /* ...wipe out last bit (black color is 0) */
+    return (((rb_tree_t *)sched)->root.color = ts & ~0x1);
+}
+
+/*******************************************************************************
+ * Entry points
+ ******************************************************************************/
+
+/* ...place message into scheduler queue */
+extern void xf_sched_put(xf_sched_t *sched, xf_task_t *t, u32 ts);
+
+/* ...get first item from the scheduler */
+extern xf_task_t * xf_sched_get(xf_sched_t *sched);
+
+/* ...cancel task execution */
+extern void xf_sched_cancel(xf_sched_t *sched, xf_task_t *t);
+
+/* ...initialize scheduler */
+extern void xf_sched_init(xf_sched_t *sched);
+
+#endif  /* __XF_SCHED_H */
diff --git a/hifi/xaf/hifi-dpf/include/xf-timebase.h b/hifi/xaf/hifi-dpf/include/xf-timebase.h
new file mode 100644
index 0000000..7b27d58
--- /dev/null
+++ b/hifi/xaf/hifi-dpf/include/xf-timebase.h
@@ -0,0 +1,132 @@
+/*******************************************************************************
+* Copyright (C) 2018 Cadence Design Systems, Inc.
+* 
+* Permission is hereby granted, free of charge, to any person obtaining
+* a copy of this software and associated documentation files (the
+* "Software"), to use this Software with Cadence processor cores only and 
+* not with any other processors and platforms, subject to
+* the following conditions:
+* 
+* The above copyright notice and this permission notice shall be included
+* in all copies or substantial portions of the Software.
+* 
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+******************************************************************************/
+
+/*******************************************************************************
+ * xf-timebase.h
+ *
+ * Common timebase for deadline-driven scheduler
+ *
+ *******************************************************************************/
+
+#ifndef __XF_H
+#error "xf-timebase.h mustn't be included directly"
+#endif
+
+/*******************************************************************************
+ * Timebase for deadline-driven scheduler
+ ******************************************************************************/
+#ifdef XAF_ENABLE_NON_HIKEY
+/* ...set internal scheduler frequency as a LCM of all supported sample rates;
+ * it is in general not a problem to have large number here, however it should
+ * be noted that maximal-size audio-buffer that we handle, when expressed in
+ * ticks of this virtual frequency, must not exceed 2**31 (for otherwise
+ * scheduler timestamp comparison function will misbehave).
+ */
+#define XF_TIMEBASE_FREQ           (4 * 3 * 56448000U)
+/* ...add paranoic check considering maximal audio-buffer duration as 0.1 sec */
+C_BUG((u32)(XF_TIMEBASE_FREQ / 10) >= (1 << 31));
+#else
+/* ...set internal scheduler frequency as a LCM of all supported sample rates */
+#define XF_TIMEBASE_FREQ           56448000U
+#endif
+/* ...supported sampling rates */
+C_BUG(XF_TIMEBASE_FREQ % 4000);
+C_BUG(XF_TIMEBASE_FREQ % 8000);
+C_BUG(XF_TIMEBASE_FREQ % 11025);
+C_BUG(XF_TIMEBASE_FREQ % 12000);
+C_BUG(XF_TIMEBASE_FREQ % 16000);
+C_BUG(XF_TIMEBASE_FREQ % 22050);
+C_BUG(XF_TIMEBASE_FREQ % 24000);
+C_BUG(XF_TIMEBASE_FREQ % 32000);
+C_BUG(XF_TIMEBASE_FREQ % 44100);
+C_BUG(XF_TIMEBASE_FREQ % 48000);
+C_BUG(XF_TIMEBASE_FREQ % 64000);
+C_BUG(XF_TIMEBASE_FREQ % 88200);
+C_BUG(XF_TIMEBASE_FREQ % 96000);
+C_BUG(XF_TIMEBASE_FREQ % 128000);
+C_BUG(XF_TIMEBASE_FREQ % 176400);
+C_BUG(XF_TIMEBASE_FREQ % 192000);
+
+/* ...calculate upsampling factor for given sample rate */
+static inline u32 xf_timebase_factor(u32 sample_rate)
+{
+    /* ...probably we can tolerate single division */
+    switch(sample_rate)
+    {
+    case 4000:
+        return XF_TIMEBASE_FREQ / 4000;
+    case 8000:
+        return XF_TIMEBASE_FREQ / 8000;
+    case 11025:
+        return XF_TIMEBASE_FREQ / 11025;
+    case 12000:
+        return XF_TIMEBASE_FREQ / 11025;
+    case 16000:
+        return XF_TIMEBASE_FREQ / 16000;
+    case 22050:
+        return XF_TIMEBASE_FREQ / 22050;
+    case 24000:
+        return XF_TIMEBASE_FREQ / 24000;
+    case 32000:
+        return XF_TIMEBASE_FREQ / 32000;
+    case 44100:
+        return XF_TIMEBASE_FREQ / 44100;
+    case 48000:
+        return XF_TIMEBASE_FREQ / 48000;
+    case 64000:
+        return XF_TIMEBASE_FREQ / 64000;
+    case 88200:
+        return XF_TIMEBASE_FREQ / 88200;
+    case 96000:
+        return XF_TIMEBASE_FREQ / 96000;
+    case 128000:
+        return XF_TIMEBASE_FREQ / 128000;
+    case 176400:
+        return XF_TIMEBASE_FREQ / 176400;
+    case 192000:
+        return XF_TIMEBASE_FREQ / 192000;
+    default:
+        return 0;
+    }
+}
+
+/* ...core timebase */
+static inline u32 xf_core_timebase(u32 core)
+{
+    xf_core_data_t     *cd = XF_CORE_DATA(core);
+    
+    /* ...get local scheduler timebase */
+    return xf_sched_timestamp(&cd->sched);
+}
+
+/* ...compare timestamps */
+static inline int xf_time_after(u32 a, u32 b)
+{
+    return ((s32)(a - b) > 0);
+}
+    
+/* ...compare timstamps */
+static inline int xf_time_before(u32 a, u32 b)
+{
+    return ((s32)(a - b) < 0);
+}
+    
diff --git a/hifi/xaf/hifi-dpf/include/xf-trace.h b/hifi/xaf/hifi-dpf/include/xf-trace.h
new file mode 100644
index 0000000..97bb290
--- /dev/null
+++ b/hifi/xaf/hifi-dpf/include/xf-trace.h
@@ -0,0 +1,82 @@
+/*******************************************************************************
+* Copyright (C) 2018 Cadence Design Systems, Inc.
+* 
+* Permission is hereby granted, free of charge, to any person obtaining
+* a copy of this software and associated documentation files (the
+* "Software"), to use this Software with Cadence processor cores only and 
+* not with any other processors and platforms, subject to
+* the following conditions:
+* 
+* The above copyright notice and this permission notice shall be included
+* in all copies or substantial portions of the Software.
+* 
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+******************************************************************************/
+
+/*******************************************************************************
+ * xf-debug.h
+ *
+ * Debugging interface for Xtensa Audio DSP codec server
+ *
+ *******************************************************************************/
+
+#ifndef __XF_H
+#error  "xf-debug.h mustn't be included directly"
+#endif
+
+/*******************************************************************************
+ * Types definitions
+ ******************************************************************************/
+
+#if XF_TRACE
+
+/* ...trace data definition */
+typedef struct xf_trace_data
+{
+    /* ...current write position in tracing buffer */
+    char               *p;
+    
+    /* ...threshold position for buffer submission */
+    char               *end;
+
+#if XF_TRACE_REMOTE
+    /* ...beginning of non-commited internal tracing buffer */
+    char               *start;    
+
+    /* ...message queue */
+    xf_msg_queue_t      queue;
+#endif
+    
+}   xf_trace_data_t;
+
+#else
+
+/* ...stub for disabled tracing */
+typedef u32     xf_trace_data_t[0];
+
+#endif  /* XF_TRACE */
+
+/*******************************************************************************
+ * Internal API functions
+ ******************************************************************************/
+
+#if XF_TRACE_REMOTE
+/* ...submit buffer for tracing */
+extern void xf_trace_submit(u32 core, xf_message_t *m);
+
+/* ...flush current buffer */
+extern void xf_trace_flush(u32 core, xf_message_t *m);
+
+#else
+
+#define xf_trace_submit(core, m)       (void)0
+#define xf_trace_flush(core, m)        (void)0
+
+#endif  /* XF_TRACE_REMOTE */
diff --git a/hifi/xaf/hifi-dpf/include/xf.h b/hifi/xaf/hifi-dpf/include/xf.h
new file mode 100644
index 0000000..f124d8c
--- /dev/null
+++ b/hifi/xaf/hifi-dpf/include/xf.h
@@ -0,0 +1,112 @@
+/*******************************************************************************
+* Copyright (C) 2018 Cadence Design Systems, Inc.
+* 
+* Permission is hereby granted, free of charge, to any person obtaining
+* a copy of this software and associated documentation files (the
+* "Software"), to use this Software with Cadence processor cores only and 
+* not with any other processors and platforms, subject to
+* the following conditions:
+* 
+* The above copyright notice and this permission notice shall be included
+* in all copies or substantial portions of the Software.
+* 
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+******************************************************************************/
+
+/*******************************************************************************
+ * xf.h
+ *
+ * Xtensa audio processing framework. Main header
+ *
+ ******************************************************************************/
+
+#ifdef  __XF_H
+#error  "xf.h included more than once"
+#endif
+
+#define __XF_H
+
+/*******************************************************************************
+ * Global configuration parameters (changing is to be done carefully)
+ ******************************************************************************/
+
+/* ...allocate 6 bits for client number per core */
+#define XF_CFG_MAX_CLIENTS              (1 << 6)
+
+/* ...allocate 2 bits for core id */
+#define XF_CFG_MAX_CORES                (1 << 2)
+
+/* ...allocate 4 bits for maximal number of input/output ports per component */
+#define XF_CFG_MAX_PORTS                (1 << 4)
+
+/* ...allocate 6 bits for opcode type */
+#define XF_CFG_MAX_CODES                (1 << 6)
+
+/*******************************************************************************
+ * Common runtime framework
+ ******************************************************************************/
+#ifndef XAF_ENABLE_NON_HIKEY
+#include "cpu_c.h"
+
+#include "dsp_driver_ipc.h"
+
+#include "dsp_debug.h"
+
+#include "dsp_memory_config.h"
+
+#include "dsp_driver_mailbox.h"
+
+#include "dsp_pcm_gain.h"
+
+#endif
+/* ...target configuration */
+#include "xf-config.h"
+
+/* ...platform run-time */
+#include "xf-runtime.h"
+
+/* ...debugging facility */
+#include "xf-debug.h"
+
+/* ...generic memory allocator */
+#include "xf-mm.h"
+
+/* ...standard opcodes */
+#include "xf-opcode.h"
+
+/* ...proxy definitions (shared messages - tbd) */
+#include "xf-proxy.h"
+
+/* ...message API */
+#include "xf-msg.h"
+
+/* ...tracer data */
+#include "xf-trace.h"
+
+/* ...I/O ports */
+#include "xf-io.h"
+
+/* ...scheduler definition */
+#include "xf-sched.h"
+
+/* ...component definition */
+#include "xf-component.h"
+
+/* ...core data */
+#include "xf-core.h"
+
+/* ...system abstractions */
+#include "xf-sys.h"
+
+/* ...memory management */
+#include "xf-mem.h"
+
+/* ...common timebase */
+#include "xf-timebase.h"
diff --git a/hifi/xaf/hifi-dpf/ipc/xt-shmem/hikey/arch_hifi330.S b/hifi/xaf/hifi-dpf/ipc/xt-shmem/hikey/arch_hifi330.S
new file mode 100644
index 0000000..6d1eb7e
--- /dev/null
+++ b/hifi/xaf/hifi-dpf/ipc/xt-shmem/hikey/arch_hifi330.S
@@ -0,0 +1,468 @@
+/*******************************************************************************
+* Copyright (C) 2018 Cadence Design Systems, Inc.
+* 
+* Permission is hereby granted, free of charge, to any person obtaining
+* a copy of this software and associated documentation files (the
+* "Software"), to use this Software with Cadence processor cores only and 
+* not with any other processors and platforms, subject to
+* the following conditions:
+* 
+* The above copyright notice and this permission notice shall be included
+* in all copies or substantial portions of the Software.
+* 
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+******************************************************************************/
+/******************************************************************************
+  arch_hifi330.S
+******************************************************************************/
+
+#include <xtensa/coreasm.h>
+#include <xtensa/simcall.h>
+#include <xtensa/corebits.h>
+#include <xtensa/config/system.h>
+#include <xtensa/config/core.h>
+#include "arch_hifi330.h"
+
+    .global    OSStartHighRdy
+    .global    OSTaskSwHook
+    .global    g_pstVosTCBHighRdy
+    .global    g_bVosRunning
+
+//    .data
+    .section    .dram0.data, "aw"
+    .type   OSIntCtxSw_Occur,@object
+OSIntCtxSw_Occur:
+    .byte 0
+
+    .begin      literal_prefix .iram0
+    .section    .iram0.text, "ax"
+    .align 4
+    .globl  VOSStartHighRdy
+    .type   VOSStartHighRdy,@function
+    .align  4
+/*****************************************************************************
+ VOSStartHighRdy
+*****************************************************************************/
+VOSStartHighRdy:
+    ENTRY(16)
+
+    /*OSIntCtxSw_Occur*/
+    movi    a2,  OSIntCtxSw_Occur
+    movi    a3,  0
+    s8i     a3,  a2, 0
+
+    movi    a2,  g_bVosRunning
+    movi    a3,  1
+    s8i    a3,  a2, 0
+
+#if 0
+    /*OS_TaskSwHook */
+    movi    a2, OS_TaskSwHook
+    callx4  a2
+#endif
+    call0 OS_TaskSwitch
+    .end      literal_prefix
+
+    .begin      literal_prefix .iram0
+    .section    .iram0.text, "ax"
+    .globl  VOSCtxSw
+    .type   VOSCtxSw,@function
+    .align  4
+/*****************************************************************************
+ OSCtxSw
+*****************************************************************************/
+VOSCtxSw:
+    entry   sp,  XT_SOL_FRMSZ
+    rsr     a2,  PS
+    s32i    a0,  sp, XT_SOL_PC
+    s32i    a2,  sp, XT_SOL_PS
+    movi    a2,  g_pstVosTCBCur
+    movi    a3,  0
+    l32i    a2,  a2, 0
+    s32i    a3,  sp, XT_SOL_EXIT
+    s32i    sp,  a2, OSTCBStkPtr        /* g_pstVosTCBCur->OSTCBStkPtr = SP;      */
+
+    call4   xthal_window_spill
+#if 0
+    /*OS_TaskSwHook */
+    movi    a2, OS_TaskSwHook
+    callx4  a2
+#endif
+
+    /* CPENABLE, co-processor state. */
+    movi    a3, g_pstVosTCBCur
+    l32i    a3, a3, 0
+    l32i    a2, a3, OSTCBStkBottom
+    movi    a3, 0
+
+    wsr     a3, CPENABLE                /* disable all co-processors        */
+    s8i     a3, a2, XT_CPENABLE         /* cp_state->cpenable = 0;          */
+
+
+    call0   OS_TaskSwitch
+    .end      literal_prefix
+
+    .begin      literal_prefix .iram0
+    .section    .iram0.text, "ax"
+    .globl  VOSIntCtxSw
+    .type   VOSIntCtxSw,@function
+    .align  4
+/*****************************************************************************
+ OSIntCtxSw
+*****************************************************************************/
+VOSIntCtxSw:
+    ENTRY(16)
+#if 0
+    /*OS_TaskSwHook */
+    movi    a2, OS_TaskSwHook
+    callx4  a2
+#endif
+
+    /*CPENABLE task co-processor, CPENABLE.  */
+    movi    a3, g_pstVosTCBCur
+    l32i    a3, a3, 0
+    l32i    a2, a3, OSTCBStkBottom
+    rsr     a3, CPENABLE
+    s8i     a3, a2, XT_CPENABLE
+    movi    a3, 0
+    wsr     a3, CPENABLE
+
+    movi    a2, OSIntCtxSw_Occur
+    movi    a3, 1
+    s8i     a3, a2, 0
+
+
+    RET(16)
+
+    .end      literal_prefix
+
+    .begin      literal_prefix .iram0
+    .section    .iram0.text, "ax"
+    .global    OSCPUSaveSR
+    .type   OSCPUSaveSR,@function
+    .align 4
+/*****************************************************************************
+ OSCPUSaveSR
+*****************************************************************************/
+OSCPUSaveSR:
+    entry     a1,32
+    rsil    a2,15
+    esync
+    retw
+    .end      literal_prefix
+
+    .begin      literal_prefix .iram0
+    .section    .iram0.text, "ax"
+    .global    OSCPURestoreSR
+    .type   OSCPURestoreSR,@function
+    .align 4
+/*****************************************************************************
+ OSCPURestoreSR
+*****************************************************************************/
+OSCPURestoreSR:
+    entry     a1,32
+    wsr.ps    a2
+    esync
+    retw
+    .end      literal_prefix
+
+    .begin      literal_prefix .iram0
+    .section    .iram0.text, "ax"
+    .global    OS_TaskSwitch
+    .type   OS_TaskSwitch,@function
+    .align 4
+/*****************************************************************************
+ OS_TaskSwitch
+*****************************************************************************/
+OS_TaskSwitch:
+
+    /*1)
+    g_ucVosPrioCur = g_ucVosPrioHighRdy;
+    g_pstVosTCBCur = g_pstVosTCBHighRdy;
+    SP = g_pstVosTCBHighRdy->OSTCBStkPtr;
+    */
+    movi    a2,  g_ucVosPrioHighRdy
+    movi    a3,  g_ucVosPrioCur
+    l8ui   a2,  a2, 0
+    movi    a4,  g_pstVosTCBHighRdy
+    s8i     a2,  a3, 0
+    movi    a2,  g_pstVosTCBCur
+    l32i    a3,  a4, 0
+    l32i    sp,  a3, OSTCBStkPtr
+    s32i    a3,  a2, 0
+
+
+    l32i    a2,  sp, XT_STK_EXIT
+    bnez    a2,  .L_in_int
+
+
+    l32i    a3,  sp, XT_SOL_PS
+    l32i    a0,  sp, XT_SOL_PC
+
+    rsync
+
+    wsr     a3,  PS
+    retw
+
+.L_in_int:
+    /* co-processor CPENABLE*/
+    movi    a3, g_pstVosTCBCur
+    l32i    a3, a3, 0
+    l32i    a2, a3, OSTCBStkBottom
+    l8ui    a3, a2, XT_CPENABLE
+    wsr     a3, CPENABLE
+
+
+    call0   OS_ContextRestore
+    rsync
+
+    l32i    a0, sp, XT_STK_EXIT
+    ret
+    .end      literal_prefix
+
+    .begin      literal_prefix .iram0
+    .section    .iram0.text, "ax"
+    .globl  OS_ContextSave
+    .type   OS_ContextSave,@function
+    .align  4
+/*****************************************************************************
+ OS_ContextSave
+*****************************************************************************/
+OS_ContextSave:
+
+    /*1)：
+    A2
+    A3
+    A4
+    A5
+    A6
+    A7
+    A8
+    A9
+    A10
+    A11
+    SAR,LBENG,LEND,LCOUNT*/
+    s32i    a2,  sp, XT_STK_A2
+    s32i    a3,  sp, XT_STK_A3
+    s32i    a4,  sp, XT_STK_A4
+    s32i    a5,  sp, XT_STK_A5
+    s32i    a6,  sp, XT_STK_A6
+    s32i    a7,  sp, XT_STK_A7
+    s32i    a8,  sp, XT_STK_A8
+    s32i    a9,  sp, XT_STK_A9
+    s32i    a10, sp, XT_STK_A10
+    s32i    a11, sp, XT_STK_A11
+    s32i    a14, sp, XT_STK_A14
+    s32i    a15, sp, XT_STK_A15
+
+
+    rsr     a3,  SAR
+    s32i    a3,  sp, XT_STK_SAR
+
+    rsr     a3,  LBEG
+    s32i    a3,  sp, XT_STK_LBEG
+    rsr     a3,  LEND
+    s32i    a3,  sp, XT_STK_LEND
+    rsr     a3,  LCOUNT
+    s32i    a3,  sp, XT_STK_LCOUNT
+
+    /*2)*/
+    mov     a9,  a0
+    s32i    a12, sp, XT_STK_TMP+0
+    s32i    a13, sp, XT_STK_TMP+4
+    s32i    a9,  sp, XT_STK_TMP+8
+    l32i    a12, sp, XT_STK_A12
+    l32i    a13, sp, XT_STK_A13
+    l32i    a9,  sp, XT_STK_A9
+    addi    sp,  sp, XT_STK_FRMSZ
+    call0   xthal_window_spill_nw
+    addi    sp,  sp, -XT_STK_FRMSZ
+    l32i    a12, sp, XT_STK_TMP+0
+    l32i    a13, sp, XT_STK_TMP+4
+    l32i    a9,  sp, XT_STK_TMP+8
+
+    addi    a2,  sp, XT_STK_EXTRA
+    call0   xthal_save_extra_nw
+
+    mov     a0, a9
+    ret
+    .end      literal_prefix
+
+    .begin      literal_prefix .iram0
+    .section    .iram0.text, "ax"
+    .global OS_ContextRestore
+    .type   OS_ContextRestore,@function
+    .align  4
+/*****************************************************************************
+ OS_ContextRestore
+*****************************************************************************/
+OS_ContextRestore:
+    /*
+    1) xthal_restore_extra_nw*/
+    mov     a13, a0
+    addi    a2,  sp, XT_STK_EXTRA
+    call0   xthal_restore_extra_nw
+    mov     a0,  a13
+
+    /*2)：
+    LBEG
+    LEND
+    LCOUNT
+    A2
+    SAR
+    A3
+    A4
+    A5
+    A6
+    A7
+    A8
+    A9
+    A10
+    A11
+    A12
+    A13
+    A14
+    A15*/
+    l32i    a2,  sp, XT_STK_LBEG
+    l32i    a3,  sp, XT_STK_LEND
+    wsr     a2,  LBEG
+    l32i    a2,  sp, XT_STK_LCOUNT
+    wsr     a3,  LEND
+    wsr     a2,  LCOUNT
+
+    l32i    a3,  sp, XT_STK_SAR
+    l32i    a2,  sp, XT_STK_A2
+    wsr     a3,  SAR
+    l32i    a3,  sp, XT_STK_A3
+    l32i    a4,  sp, XT_STK_A4
+    l32i    a5,  sp, XT_STK_A5
+    l32i    a6,  sp, XT_STK_A6
+    l32i    a7,  sp, XT_STK_A7
+    l32i    a8,  sp, XT_STK_A8
+    l32i    a9,  sp, XT_STK_A9
+    l32i    a10, sp, XT_STK_A10
+    l32i    a11, sp, XT_STK_A11
+
+    l32i    a12, sp, XT_STK_A12
+    l32i    a13, sp, XT_STK_A13
+    l32i    a14, sp, XT_STK_A14
+    l32i    a15, sp, XT_STK_A15
+
+    ret
+
+    .end      literal_prefix
+
+    .begin      literal_prefix .iram0
+    .section    .iram0.text, "ax"
+    .globl  OS_IntEnter
+    .type   OS_IntEnter,@function
+    .align  4
+OS_IntEnter:
+
+    /* Save a12-13 in the stack frame as required by _xt_context_save. */
+    s32i    a12, sp, XT_STK_A12
+    s32i    a13, sp, XT_STK_A13
+
+    /* Save return address in a safe place (free a0). */
+    mov     a12, a0
+
+    /* Save the rest of the interrupted context (preserves A12-13). */
+    call0   OS_ContextSave
+
+    /*
+    Save interrupted task's SP in TCB only if not nesting.
+    Manage nesting directly rather than call the generic OSIntEnter()
+    (in windowed ABI we can't call a C function here anyway because PS.EXCM is still set).
+    */
+    movi    a2,  g_bVosRunning
+    movi    a3,  g_ucVosIntNesting
+    l8ui   a2,  a2, 0                  /*  if (g_bVosRunning == OS_TRUE) {         */
+    beqz    a2,  2f
+    l8ui   a2,  a3, 0                  /*      if (g_ucVosIntNesting == 0) {        */
+    bnez    a2,  1f
+    movi    a4,  g_pstVosTCBCur
+    l32i    a4,  a4, 0
+    s32i    sp,  a4, OSTCBStkPtr        /*          g_pstVosTCBCur->OSTCBStkPtr = SP; */
+1:                                      /*      }                               */
+    addi    a2,  a2, 1                  /*      if (g_ucVosIntNesting < 255u) {      */
+    bgeui   a2,  256, 2f                /*           g_ucVosIntNesting++;            */
+    s8i    a2,  a3, 0                  /*      }                               */
+2:                                      /*  }                                   */
+
+    /* Retrieve the return address and return to interrupt handler. */
+    mov     a0,  a12
+    ret
+    .end      literal_prefix
+
+    .begin      literal_prefix .iram0
+    .section    .iram0.text, "ax"
+    .globl  OS_IntExit
+    .type   OS_IntExit,@function
+    .align  4
+OS_IntExit:
+#if 0
+    /* Call VOSIntExit() to deal with nesting and call the scheduler. */
+    movi    a2, VOSIntExit
+
+    rsil    a0, XCHAL_EXCM_LEVEL    /* enter critical section       */
+    callx4  a2                      /* VOSIntExit()                  */
+#endif
+    /* Context-switch deferred from OSIntCtxSw(). Still in critical section. */
+    movi    a2, OSIntCtxSw_Occur
+    l8ui    a3, a2, 0
+    beqz    a3, 1f                  /* if (OSIntCtxSw_Occur) {         */
+    movi    a3, 0                   /*    OSIntCtxSw_Occur = false;    */
+    s8i     a3, a2, 0
+    call0   OS_TaskSwitch           /*    tail-call dispatcher;     */
+    /* Never returns here. */       /* }                            */
+1:
+
+    /*
+    We come here only if there was no context switch, that is if this
+    is a nested interrupt or the interrupted task was not preempted.
+    We are still on the same stack so there's no need to load the SP.
+    */
+
+    /* Restore full context from interrupt stack frame and return to exit dispatcher. */
+    call0   OS_ContextRestore
+
+    /*
+    Must return via the exit dispatcher corresponding to the entrypoint from which
+    this was called. Interruptee's A0, A1, PS, PC are restored and the interrupt
+    stack frame is deallocated in the exit dispatcher.
+    */
+    l32i    a0, sp, XT_STK_EXIT
+    ret
+    .end      literal_prefix
+
+    .begin      literal_prefix .iram0
+    .section    .iram0.text, "ax"
+    .globl  OS_GetTaskCoprocState
+    .type   OS_GetTaskCoprocState,@function
+    .align  4
+OS_GetTaskCoprocState:
+
+    movi    a2,  g_bVosRunning
+    movi    a3,  g_ucVosIntNesting
+    l8ui   a2,  a2, 0
+    l8ui   a3,  a3, 0
+    beqz    a2,  1f
+    bnez    a3,  1f
+    movi    a15, g_pstVosTCBCur
+    l32i    a15, a15, 0
+    beqz    a15, 2f
+    l32i    a15,  a15, OSTCBStkBottom
+    ret
+
+1:  movi    a15, 0
+2:  ret
+    .end      literal_prefix
+
+
diff --git a/hifi/xaf/hifi-dpf/ipc/xt-shmem/hikey/cpu_c.c b/hifi/xaf/hifi-dpf/ipc/xt-shmem/hikey/cpu_c.c
new file mode 100644
index 0000000..12ce8b7
--- /dev/null
+++ b/hifi/xaf/hifi-dpf/ipc/xt-shmem/hikey/cpu_c.c
@@ -0,0 +1,152 @@
+/*******************************************************************************
+* Copyright (C) 2018 Cadence Design Systems, Inc.
+* 
+* Permission is hereby granted, free of charge, to any person obtaining
+* a copy of this software and associated documentation files (the
+* "Software"), to use this Software with Cadence processor cores only and 
+* not with any other processors and platforms, subject to
+* the following conditions:
+* 
+* The above copyright notice and this permission notice shall be included
+* in all copies or substantial portions of the Software.
+* 
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+******************************************************************************/
+
+
+#include "cpu_c.h"
+#include <xtensa/config/specreg.h>
+#include <xtensa/config/core.h>
+#include <xtensa/simcall.h>
+#include "arch_hifi330.h"
+
+#ifdef __cplusplus
+#if __cplusplus
+extern "C" {
+#endif
+#endif
+
+/*lint -e838 -e835 -e750 -e529 -e533 -e40*/
+
+//#define DSP_TRACES_TO_MEM_SIZE (0x800)
+
+void *g_pfVosHookFuncTable[OS_HOOK_TYPE_BUTT];
+
+void *g_pfVosIntrFuncTable[OS_INTR_CONNECT_BUTT];
+
+//unsigned int g_uwSoftIntInfo = 0;
+
+/* Interrupt nesting level */
+unsigned char g_ucVosIntNesting;
+
+/* Priority of current task */
+unsigned char g_ucVosPrioCur;
+
+/* Priority of highest priority task */
+unsigned char g_ucVosPrioHighRdy;
+
+/* Flag indicating that kernel is running */
+unsigned short g_bVosRunning;
+
+/* Pointer to highest priority TCB R-to-R */
+unsigned int *g_pstVosTCBHighRdy;
+
+/* Pointer to currently running TCB*/
+unsigned int *g_pstVosTCBCur;
+
+#define _XTSTR(x) #x
+#define XTSTR(x) _XTSTR(x)
+
+void OS_EnterIntHook(unsigned int uhwIntrNo)
+{
+    INTR_HOOK_FUN_TYPE pfIntrHook = (INTR_HOOK_FUN_TYPE)g_pfVosHookFuncTable[OS_HOOK_TYPE_ENTER_INTR];/*lint !e611*/
+
+    if (0 != pfIntrHook)
+    {
+        pfIntrHook(uhwIntrNo);
+    }
+}
+
+void OS_ExitIntHook(unsigned int uhwIntrNo)
+{
+    INTR_HOOK_FUN_TYPE pfIntrHook = (INTR_HOOK_FUN_TYPE)g_pfVosHookFuncTable[OS_HOOK_TYPE_EXIT_INTR];/*lint !e611*/
+
+    if (0 != pfIntrHook)
+    {
+        pfIntrHook(uhwIntrNo);
+    }
+}
+
+void OS_UserexecHandler(unsigned int uwExecCauseNo, unsigned int psAddr)
+{
+    VOS_EXCEPTION_HOOK_FUNC pfIntrHook = (VOS_EXCEPTION_HOOK_FUNC)g_pfVosHookFuncTable[OS_HOOK_TYPE_EXCEPTION];/*lint !e611*/
+
+    if (0 != pfIntrHook)
+    {
+        pfIntrHook(uwExecCauseNo);
+    }
+    else
+    {
+        extern void OS_Panic(void);
+        OS_Panic();
+    }
+}
+
+void OS_InterruptHandler(unsigned int uhwIntrNo)
+{
+    HOOK_FUN_TYPE pfIntrHook = (HOOK_FUN_TYPE)g_pfVosIntrFuncTable[uhwIntrNo];
+
+    if (0 != pfIntrHook)
+        //pfIntrHook();
+        pfIntrHook(0);
+}
+
+void OS_NmiHook(unsigned int uwExecCauseNo, unsigned int psAddr)
+{
+    HOOK_FUN_TYPE pfNmiHook = (HOOK_FUN_TYPE)g_pfVosHookFuncTable[OS_HOOK_TYPE_NMI];/*lint !e611*/
+
+    if (0 != pfNmiHook)
+    {
+        //pfNmiHook();
+        pfNmiHook(0);
+    }
+
+    //wait for hifi reset
+    UCOM_SET_WFI_NMI(5);
+}
+
+void VOS_ConnectInterrupt(unsigned int uwIntrNo, HOOK_FUN_TYPE pfnInterruptHook)
+{
+    g_pfVosIntrFuncTable[uwIntrNo] = (void *)pfnInterruptHook;/*lint !e611*/
+}
+
+void VOS_EnableInterrupt(unsigned int uwIntNo)
+{
+    unsigned int uwBitEnable;
+
+    uwBitEnable = xthal_get_intenable();
+    xthal_set_intenable(uwBitEnable | (((unsigned int)1) << uwIntNo ));
+
+}
+void VOS_DisableInterrupt(unsigned int uwIntNo)
+{
+    unsigned int uwBitEnable;
+
+    uwBitEnable = xthal_get_intenable();
+    xthal_set_intenable(uwBitEnable | (((unsigned int)0) << uwIntNo ));
+
+}
+
+#ifdef __cplusplus
+    #if __cplusplus
+        }
+    #endif
+#endif
+
diff --git a/hifi/xaf/hifi-dpf/ipc/xt-shmem/hikey/dsp_comm.c b/hifi/xaf/hifi-dpf/ipc/xt-shmem/hikey/dsp_comm.c
new file mode 100644
index 0000000..290ca9d
--- /dev/null
+++ b/hifi/xaf/hifi-dpf/ipc/xt-shmem/hikey/dsp_comm.c
@@ -0,0 +1,75 @@
+/*******************************************************************************
+* Copyright (C) 2018 Cadence Design Systems, Inc.
+* 
+* Permission is hereby granted, free of charge, to any person obtaining
+* a copy of this software and associated documentation files (the
+* "Software"), to use this Software with Cadence processor cores only and 
+* not with any other processors and platforms, subject to
+* the following conditions:
+* 
+* The above copyright notice and this permission notice shall be included
+* in all copies or substantial portions of the Software.
+* 
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+******************************************************************************/
+
+#include "dsp_comm.h"
+
+void dsp_memcpy(void *d, void *s, unsigned int size)
+{
+    unsigned char *dest = (unsigned char*)d;
+    unsigned char *src = (unsigned char*)s;
+
+    if (s == d) {
+        return;
+    } else if (src > dest) {
+        for (; dest < ((unsigned char*)d + size); dest++) {
+            *dest = *src;
+            src++;
+        }
+    } else {
+        src = src + (size - 1);
+        for (dest = dest + (size - 1); dest >= (unsigned char*)d; dest--) {
+            *dest = *src;
+            src--;
+        }
+    }
+}
+
+
+void dsp_memset(void *d, unsigned char ucData, unsigned int size)
+{
+    unsigned int i;
+    unsigned char *dest  = (unsigned char*)d;
+
+    for(i = 0; i < size; i++)
+       *dest++  = ucData;
+}
+int division(int a, int b)
+{
+    const int bits_in_word_m1 = (int)(sizeof(int) * 8) - 1;
+    int s_a = a >> bits_in_word_m1;           /* s_a = a < 0 ? -1 : 0 */
+    int s_b = b >> bits_in_word_m1;           /* s_b = b < 0 ? -1 : 0 */
+    a = (a ^ s_a) - s_a;                         /* negate if s_a == -1 */
+    b = (b ^ s_b) - s_b;                         /* negate if s_b == -1 */
+    s_a ^= s_b;                                  /* sign of quotient */
+    /*
+     * On CPUs without unsigned hardware division support,
+     *  this calls __udivsi3 (notice the cast to su_int).
+     * On CPUs with unsigned hardware division support,
+     *  this uses the unsigned division instruction.
+     */
+    return ((int)a/(int)b ^ s_a) - s_a;    /* negate if s_a == -1 */
+
+}
+
+
+
+
diff --git a/hifi/xaf/hifi-dpf/ipc/xt-shmem/hikey/dsp_debug.c b/hifi/xaf/hifi-dpf/ipc/xt-shmem/hikey/dsp_debug.c
new file mode 100644
index 0000000..a74308e
--- /dev/null
+++ b/hifi/xaf/hifi-dpf/ipc/xt-shmem/hikey/dsp_debug.c
@@ -0,0 +1,468 @@
+/*******************************************************************************
+* Copyright (C) 2018 Cadence Design Systems, Inc.
+* 
+* Permission is hereby granted, free of charge, to any person obtaining
+* a copy of this software and associated documentation files (the
+* "Software"), to use this Software with Cadence processor cores only and 
+* not with any other processors and platforms, subject to
+* the following conditions:
+* 
+* The above copyright notice and this permission notice shall be included
+* in all copies or substantial portions of the Software.
+* 
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+******************************************************************************/
+
+#include <stdarg.h>
+#include <stdlib.h>
+#include "dsp_debug.h"
+#include "dsp_memory_config.h"
+#include "dsp_driver_mailbox.h"
+#include "dsp_comm.h"
+#include "dsp_pcm_gain.h"
+extern int g_pcm_gain;
+extern int MsgFlag;
+extern int InpBuf[HOLD_BUF_SIZE];					// assumes 32 bit samples.
+extern int OutBuf[HOLD_BUF_SIZE];				// assumes 32 bit samples.
+
+static int hex2asc(int n)
+{
+	n &= 15;
+	if(n > 9){
+		return ('a' - 10) + n;
+	} else {
+		return '0' + n;
+	}
+}
+
+static void xputs(const char *s, void (*xputc)(unsigned n, void *cookie), void *cookie)
+{
+	while (*s) {
+		xputc(*s++, cookie);
+	}
+}
+
+void __xprintf(const char *fmt, va_list ap,void (*xputc)(unsigned n, void *cookie), void *cookie)
+{
+	char scratch[32];
+	for(;;){
+		switch(*fmt){
+		case 0:
+			va_end(ap);
+			return;
+		case '%':
+			switch(fmt[1]) {
+			case 'c': {
+				unsigned n = va_arg(ap, unsigned);
+				xputc(n, cookie);
+			fmt += 2;
+				continue;
+		}
+			case 'h': {
+				unsigned n = va_arg(ap, unsigned);
+			xputc(hex2asc(n >> 12), cookie);
+				xputc(hex2asc(n >> 8), cookie);
+				xputc(hex2asc(n >> 4), cookie);
+				xputc(hex2asc(n >> 0), cookie);
+				fmt += 2;
+				continue;
+			}
+			case 'b': {
+				unsigned n = va_arg(ap, unsigned);
+			xputc(hex2asc(n >> 4), cookie);
+				xputc(hex2asc(n >> 0), cookie);
+				fmt += 2;
+				continue;
+			}
+			case 'p':
+			case 'X':
+			case 'x': {
+				unsigned n = va_arg(ap, unsigned);
+				char *p = scratch + 15;
+				*p = 0;
+				do {
+					*--p = hex2asc(n);
+				n = n >> 4;
+				} while(n != 0);
+				while(p > (scratch + 7)) *--p = '0';
+				xputs(p, xputc, cookie);
+				fmt += 2;
+				continue;
+			}
+  	case 'd': {
+				int n = va_arg(ap, int);
+				char *p = scratch + 15;
+				*p = 0;
+				if(n < 0) {
+					xputc('-', cookie);
+				n = -n;
+				}
+				do {
+					*--p = (n % 10) + '0';
+					n /= 10;
+				} while(n != 0);
+				xputs(p, xputc, cookie);
+				fmt += 2;
+				continue;
+			}
+
+        case 'f': {
+                double fnum = va_arg(ap, double);
+                unsigned long long ipart, fpart;
+                int i=4;
+                char *p = scratch + 31;
+                *p = '\0';
+            
+            	if(fnum < 0.0) 
+                {
+        		    xputc('-', cookie);
+        		    fnum = -fnum;
+                }
+                ipart = (unsigned long long)fnum;
+                fpart = ((fnum-ipart)*10000); //10^i = 10000
+
+        		while(i>0)
+                {
+		            *--p = (fpart % 10) + '0';
+	        	    fpart /= 10;
+                    i--;
+		        }
+                *--p = '.';
+		        while(ipart > 0)
+                {
+    		        *--p = (ipart % 10) + '0';
+	    	        ipart /= 10;
+		        }
+                
+                xputs(p, xputc, cookie); 
+                fmt += 2;    
+                continue;
+            }
+
+			case 'u': {
+				unsigned n = va_arg(ap, unsigned);
+				char *p = scratch + 15;
+			*p = 0;
+				do {
+					*--p = (n % 10) + '0';
+					n /= 10;
+				} while(n != 0);
+				xputs(p, xputc, cookie);
+				fmt += 2;
+				continue;
+		}
+			case 's': {
+				char *s = (char *)va_arg(ap, char*);
+				if(s == 0) s = "(null)";
+				xputs(s, xputc, cookie);
+				fmt += 2;
+				continue;
+			}
+			case 'l': {
+				if (fmt[2] == 'x') {
+					unsigned long long n = va_arg(ap, unsigned long long);
+					char *p = scratch + 23;
+					*p = 0;
+					do {
+						*--p = hex2asc((int)n);
+						n = n >> 4;
+					} while(n != 0);
+				while(p > (scratch + 7)) *--p = '0';
+					xputs(p, xputc, cookie);
+					fmt += 3;
+				continue;
+				}
+			}
+			}
+			xputc(*fmt++, cookie);
+			break;
+		case '\n':
+			xputc('\r', cookie);
+		default:
+			xputc(*fmt++, cookie);
+		}
+	}
+}
+
+static char* log_to_mem_head = 0;
+void dsp_debug_init()
+{
+	log_to_mem_head = (char *)(*((unsigned int *)DRV_DSP_UART_TO_MEM_CUR_ADDR) + DRV_DSP_UART_TO_MEM);
+
+}
+
+static void log_write_to_mem(const char c_data)
+{
+	*log_to_mem_head = c_data;
+
+	log_to_mem_head++;
+	if ((unsigned int)log_to_mem_head >= (DRV_DSP_UART_TO_MEM + DRV_DSP_UART_TO_MEM_SIZE - 1))
+		log_to_mem_head = (char *)DRV_DSP_UART_TO_MEM + DRV_DSP_UART_TO_MEM_RESERVE_SIZE;
+
+	*((unsigned int *)DRV_DSP_UART_TO_MEM_CUR_ADDR) = (unsigned int)log_to_mem_head - DRV_DSP_UART_TO_MEM;
+}
+
+
+static void print_char(const char c_data)
+{
+	if (c_data == '\n')
+		log_write_to_mem('\r');
+	log_write_to_mem(c_data);
+}
+
+typedef void (*xputc_type)(unsigned n, void *cookie);
+
+void print_log(const char *fmt, ...)
+{
+	va_list args;
+va_start(args, fmt);
+	__xprintf(fmt, args, (xputc_type)print_char, 0);
+	va_end(args);
+}
+#ifdef HIKEY_XAF_IPC_COMMENT_OUT
+#define ISSPACE(c) (c == ' ' || c == 0x09 || c == 0x0A || c == 0x0D || c == 0)
+
+char* dsp_om_trim_zero(char* str)
+{
+	char *str_begin = 0;
+	char *str_end = 0;
+
+	if (!str)
+		return 0;
+
+	str_begin = str;
+	str_end = str + strlen(str);
+
+	while (str_begin < str_end) {
+		if (ISSPACE(*str_begin)) {
+			*str_begin = 0;
+			str_begin++;
+		} else {
+			break;
+		}
+	}
+	while (str_begin < str_end) {
+		if (ISSPACE(*str_end)) {
+			*str_end = 0;
+			str_end--;
+		} else {
+			break;
+		}
+	}
+
+	return str_begin;
+}
+
+char * dsp_om_split_str(char* str, char** split_str)
+{
+	char *str_begin = 0;
+	char *str_end = 0;
+
+	if ((!str) || (!split_str)) {
+		DSP_LOGE("input param is null\n");
+		return str;
+	}
+
+	str_end = str + strlen(str);
+	str_begin = dsp_om_trim_zero(str);
+
+	if (str_begin == str_end) {
+		DSP_LOGE("input str all space\n");
+		return 0;
+	}
+
+	*split_str = dsp_om_trim_zero(strchr(str_begin, ' '));
+
+	return str_begin;
+}
+
+#ifdef GJB_CHANGE
+void send_msg_data_to_ap()
+{
+
+    struct hikey_msg_with_content hikey_msg;
+    DSP_LOGE("%s\n", __func__);
+    hikey_msg.msg_info.msg_id=HIKEY_AUDIO_DSP_AP_OM_CMD;
+    hikey_msg.msg_info.msg_len=HIKEY_AP_DSP_MSG_MAX_LEN;
+    strncpy(hikey_msg.msg_info.msg_content,"pcm_gain",HIKEY_AP_DSP_MSG_MAX_LEN);
+    dsp_mailbox_write(&hikey_msg);
+    DSP_LOGE("Exit %s\n", __func__);
+}
+
+void send_pcm_data_to_ap()
+{
+    struct hikey_ap_dsp_msg_body msg_info;
+    DSP_LOGE("Enter %s\n", __func__);
+    msg_info.msg_id = ID_XAF_DSP_TO_AP;
+    msg_info.msg_len = sizeof(msg_info);
+    msg_info.xf_dsp_msg.id= 0;
+    msg_info.xf_dsp_msg.opcode = 0xc;
+    msg_info.xf_dsp_msg.length = 0x400;
+    msg_info.xf_dsp_msg.address = 0x8B432000;
+    dsp_mailbox_write(&msg_info);
+    DSP_LOGE("Exit %s\n", __func__);
+}
+#else
+void send_msg_data_to_ap()
+{
+    xf_proxy_message_t hikey_msg;
+    DSP_LOGE("%s\n", __func__);
+    hikey_msg.id=HIKEY_AUDIO_DSP_AP_OM_CMD;
+    hikey_msg.length=HIKEY_AP_DSP_MSG_MAX_LEN;
+    strncpy(hikey_msg.address,"pcm_gain",HIKEY_AP_DSP_MSG_MAX_LEN);
+    dsp_mailbox_write(&hikey_msg);
+    DSP_LOGE("Exit %s\n", __func__);
+}
+
+void send_pcm_data_to_ap()
+{
+    xf_proxy_message_t msg_info;
+    DSP_LOGE("Enter %s\n", __func__);
+    msg_info.id = ID_XAF_DSP_TO_AP;
+    msg_info.opcode = 0xc;
+    msg_info.length = 0x400;
+    msg_info.address = 0x8B432000;
+    dsp_mailbox_write(&msg_info);
+    DSP_LOGE("Exit %s\n", __func__);
+}
+#endif
+static void dsp_om_read_mem(char *str)
+{
+	unsigned int addr  = 0;
+	unsigned int val = 0;
+	if (!str) {
+		DSP_LOGE("str is null\n");
+		return;
+	}
+
+	addr = strtoul(str, 0, 16);
+	DSP_LOGD("str:%s addr:0x%x\n", str, addr);
+
+	val = *(unsigned int*)addr;
+    send_pcm_data_to_ap();
+//send_msg_data_to_ap();
+    dsp_ipc_send_irq_to_ap();
+	DSP_LOGI("read addr:0x%x value:0x%x\n", addr, val);
+	return;
+}
+
+static void dsp_om_write_mem(char *str)
+{
+	char* str_addr  = 0;
+	char* str_val = 0;
+	unsigned int addr  = 0;
+	unsigned int val = 0;
+	if (!str) {
+	DSP_LOGE("str is null\n");
+		return;
+	}
+
+	str_addr = dsp_om_split_str(str, &str_val);
+
+	if(!str_addr || !str_val) {
+		DSP_LOGE("str:%s str_addr:%s strValue:%s\n", str, str_addr ? str_addr : "null", str_val ? str_val : "null");
+		return;
+	}
+	addr = strtoul(str_addr, 0, 16);
+	val= strtoul(str_val, 0, 16);
+	DSP_LOGI("str_addr:%s addr:%x str_val:%s val:%x\n", str_addr ? str_addr : "null", addr, str_val ? str_val : "null", val);
+
+	*(unsigned int *)addr = val;
+
+	return;
+
+}
+
+static void dsp_om_pcm_gain(char *str)
+{
+	char* str_addr  = 0;
+	char* str_val = 0;
+	unsigned int addr  = 0;
+	unsigned int val = 0;
+	if (!str) {
+	DSP_LOGE("str is null\n");
+		return;
+	}
+	str_addr = dsp_om_split_str(str, &str_val);
+	if(!str_addr || !str_val) {
+		DSP_LOGE("str:%s str_addr:%s strValue:%s\n", str, str_addr ? str_addr : "null", str_val ? str_val : "null");
+		return;
+	}
+	addr = strtoul(str_addr, 0, 16);
+	val= strtoul(str_val, 0, 16);
+	DSP_LOGI("str_addr:%s addr:%x str_val:%s val:%x\n", str_addr ? str_addr : "null", addr, str_val ? str_val : "null", val);
+    if(ReadData((char*)InpBuf, val) ){
+        processAudio(OutBuf, InpBuf, (val/4));  
+        if(WriteData((char*)OutBuf, val)) {
+            MsgFlag = MSG_PROC; // indicate that the msg is processed.
+            DSP_LOGI("PCM gain processed\n");
+            send_msg_data_to_ap();
+            dsp_ipc_send_irq_to_ap(); // Indicate data is ready  to pickup...  Maybe you need to send a msg to AP.
+        }
+        else {                
+            DSP_LOGI("PCM gain Write error\n");
+            MsgFlag = MSG_INCOMP;
+            dsp_ipc_send_irq_to_ap();// Report error..
+        }
+    }
+    else {
+        DSP_LOGI("PCM gain Read error\n");
+        MsgFlag = MSG_INCOMP;
+        dsp_ipc_send_irq_to_ap();
+    }
+	return;
+}
+typedef void (*om_proc_func)(char *str);
+
+struct om_proc_info {
+	char *om_proc_name;
+	om_proc_func func;
+};
+
+struct om_proc_info om_proc_table[] = {
+	{"read_mem", dsp_om_read_mem},
+	{"write_mem", dsp_om_write_mem},
+	{"pcm_gain", dsp_om_pcm_gain},
+};
+
+om_proc_func dsp_om_get_func_by_name(char *name)
+{
+	unsigned int i = 0;
+	unsigned int func_num = sizeof(om_proc_table) / sizeof(om_proc_table[0]);
+
+	if (!name) {
+		DSP_LOGE("name is null\n");
+		return 0;
+	}
+
+	for (i = 0; i < func_num; i++)
+		if (!strncmp((char *)om_proc_table[i].om_proc_name, name, strlen((char *)om_proc_table[i].om_proc_name)))
+			return om_proc_table[i].func;
+
+	return 0;
+}
+
+void dsp_om_func_proc(char *om_str, unsigned int str_len)
+{
+	char * cmd_name = 0;
+	char * str_param = 0;
+	om_proc_func proc_func = 0;
+
+	cmd_name = dsp_om_split_str((char *)om_str, &str_param);
+
+	DSP_LOGI("cmd_name:%s\n", cmd_name);
+	proc_func = dsp_om_get_func_by_name(cmd_name);
+	if (proc_func)
+		proc_func(str_param);
+	else
+		DSP_LOGE("do not find func\n");
+}
+#endif
+
diff --git a/hifi/xaf/hifi-dpf/ipc/xt-shmem/hikey/int_vector.S b/hifi/xaf/hifi-dpf/ipc/xt-shmem/hikey/int_vector.S
new file mode 100644
index 0000000..d579a55
--- /dev/null
+++ b/hifi/xaf/hifi-dpf/ipc/xt-shmem/hikey/int_vector.S
@@ -0,0 +1,830 @@
+/*******************************************************************************
+* Copyright (C) 2018 Cadence Design Systems, Inc.
+* 
+* Permission is hereby granted, free of charge, to any person obtaining
+* a copy of this software and associated documentation files (the
+* "Software"), to use this Software with Cadence processor cores only and 
+* not with any other processors and platforms, subject to
+* the following conditions:
+* 
+* The above copyright notice and this permission notice shall be included
+* in all copies or substantial portions of the Software.
+* 
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+******************************************************************************/
+/******************************************************************************
+  int_vector.S
+******************************************************************************/
+#include    <xtensa/coreasm.h>
+#include    <xtensa/corebits.h>
+#include    <xtensa/config/system.h>
+#include    <xtensa/simcall.h>
+#include    "arch_hifi330.h"
+
+//    .data
+    .section    .dram0.data, "aw"
+/* CP */
+    .type   g_awVosCoprocSaOffset,@object
+    .align  16                      /* minimize crossing cache boundaries */
+g_awVosCoprocSaOffset:
+    .word   XT_CP0_SA, XT_CP1_SA, XT_CP2_SA, XT_CP3_SA
+    .word   XT_CP4_SA, XT_CP5_SA, XT_CP6_SA, XT_CP7_SA
+
+/* CP n's CPENABLE bit. */
+    .type   g_bVosCoprocMask,@object
+    .align  16,,8                   /* try to keep it all in one cache line */
+g_bVosCoprocMask:
+    .byte   0x1, 0x2, 0x4, 0x8, 0x10, 0x20, 0x40, 0x80
+
+/* Owner of CP (0 = unowned). */
+    .global g_awVosCoprocOwnerSa
+    .type   g_awVosCoprocOwnerSa,@object
+    .align  16,,XCHAL_CP_MAX<<2     /* minimize crossing cache boundaries */
+g_awVosCoprocOwnerSa:
+    .space  XCHAL_CP_MAX << 2,0
+
+    .global g_strVosPanicMessage
+    .align      4
+g_strVosPanicMessage:
+    .string "\npanic at addr 0x%08x.\n"
+
+
+    .begin      literal_prefix .iram0
+    .section    .iram0.text, "ax"
+    .global     OS_Panic
+    .type       OS_Panic,@function
+    .align      4
+/*****************************************************************************
+ OS_Panic
+*****************************************************************************/
+OS_Panic:
+
+#ifdef ZOS_SIM
+    /*panic at addr*/
+    addi    a4, a0, -3                      /* point to call0 */
+    movi    a3, g_strVosPanicMessage
+    movi    a2, SYS_log_msg
+    simcall
+    movi    a2, SYS_gdb_abort
+    simcall
+#else
+    /*low & med*/
+    rsil    a2, XCHAL_EXCM_LEVEL            /* disable all low & med ints */
+1:  j       1b                              /* loop infinitely */
+#endif
+
+    .end      literal_prefix
+
+    .begin      literal_prefix .DebugExceptionVector
+    .section    .DebugExceptionVector.text, "ax"
+    .global     OS_DebugExceptionVector
+    .align      4
+/*****************************************************************************
+_DebugExceptionVector
+*****************************************************************************/
+OS_DebugExceptionVector:
+#ifdef ZOS_SIM
+    wsr     a2, EXCSAVE+XCHAL_DEBUGLEVEL
+    movi    a2, SYS_gdb_enter_sktloop
+    simcall
+#else
+    wsr     a0, EXCSAVE+XCHAL_DEBUGLEVEL
+    call0   OS_Panic
+    rfi     XCHAL_DEBUGLEVEL
+#endif
+
+    .end        literal_prefix
+
+
+    .begin      literal_prefix .DoubleExceptionVector
+    .section    .DoubleExceptionVector.text, "ax"
+    .global     OS_DoubleExceptionVector
+    .align      4
+/*****************************************************************************
+ OS_DoubleExceptionVector
+*****************************************************************************/
+OS_DoubleExceptionVector:
+    call0   OS_Panic                       /* does not return */
+    rfde                                    /* make a0 point here not later */
+
+    .end        literal_prefix
+
+
+    .begin      literal_prefix .KernelExceptionVector
+    .section    .KernelExceptionVector.text, "ax"
+    .global     OS_KernelExceptionVector
+    .align      4
+/*****************************************************************************
+ _KernelExceptionVector
+*****************************************************************************/
+OS_KernelExceptionVector:
+    call0   OS_Panic                       /* does not return */
+    rfe                                    /* make a0 point here not later */
+
+    .end        literal_prefix
+
+
+    .begin      literal_prefix .UserExceptionVector
+    .section    .UserExceptionVector.text, "ax"
+    .global     OS_UserExceptionVector
+    .type       OS_UserExceptionVector,@function
+    .align      4
+/*****************************************************************************
+ _UserExceptionVector
+*****************************************************************************/
+OS_UserExceptionVector:
+    wsr     a0, EXCSAVE_1                   /* preserve a0 */
+    call0   OS_UserExc                      /* user exception handler */
+    /* never returns here - call0 is used as a jump (see note at top) */
+
+    .end        literal_prefix
+
+    .begin      literal_prefix .iram0
+    .section    .iram0.text, "ax"
+
+    .align      4
+OS_CoProcessorExc:
+    s32i    a5, sp, XT_STK_A5               /* save a5 */
+    addi    a5, a0, -EXCCAUSE_CP0_DISABLED  /* a0 = CP index */
+    bgei    a5, XCHAL_CP_MAX, .L_xt_user_exc_not_coproc
+    call0   OS_CoProcessorException                  /* in window vectors section */
+    /* never returns here - call0 is used as a jump (see note at top) */
+    .end      literal_prefix
+
+    .begin      literal_prefix .iram0
+    .section    .iram0.text, "ax"
+    .align      4
+OS_AllocExc:
+    call0   OS_AllocaException                  /* in window vectors section */
+    /* never returns here - call0 is used as a jump (see note at top) */
+    .end      literal_prefix
+
+    .begin      literal_prefix .iram0
+    .section    .iram0.text, "ax"
+    .align      4
+OS_SyscallExc:
+    call0   OS_SyscallException
+    /* never returns here - call0 is used as a jump (see note at top) */
+
+    .end      literal_prefix
+
+    .begin      literal_prefix .iram0
+    .section    .iram0.text, "ax"
+    .global     OS_UserExc
+    .type       OS_UserExc,@function
+    .align      4
+OS_UserExc:
+    rsr     a0, EXCCAUSE
+    beqi    a0, EXCCAUSE_ALLOCA,  OS_AllocExc
+    beqi    a0, EXCCAUSE_SYSCALL, OS_SyscallExc
+
+    mov     a0, sp                          /* sp == a1 */
+    addi    sp, sp, -XT_STK_FRMSZ           /* allocate interrupt stack frame */
+    s32i    a0, sp, XT_STK_A1               /* save pre-interrupt SP */
+    rsr     a0, PS                          /* save interruptee's PS */
+    s32i    a0, sp, XT_STK_PS
+    rsr     a0, EPC_1                       /* save interruptee's PC */
+    s32i    a0, sp, XT_STK_PC
+    rsr     a0, EXCSAVE_1                   /* save interruptee's a0 */
+    s32i    a0, sp, XT_STK_A0
+    movi    a0, OS_UserExit                 /* save exit point for dispatch */
+    s32i    a0, sp, XT_STK_EXIT
+
+    rsr     a0, EXCCAUSE
+    bgeui   a0, EXCCAUSE_CP0_DISABLED, OS_CoProcessorExc
+
+.L_xt_user_exc_not_coproc:
+
+
+    call0   XT_RTOS_INT_ENTER
+
+
+    movi    a0, PS_INTLEVEL(XCHAL_EXCM_LEVEL) | PS_UM | PS_WOE
+    wsr     a0, PS
+    rsync
+
+    rsr     a2, EXCCAUSE
+    beqi    a2, EXCCAUSE_LEVEL1INTERRUPT, .L_xt_user_int
+    mov     a6,a2
+    mov     a7,a1
+    /*User exception*/
+    call4   OS_UserexecHandler
+    j       .L_xt_user_done
+
+.L_xt_user_int:
+    /* level 1 int */
+    rsr     a2, INTENABLE
+    rsr     a3, INTERRUPT
+    movi    a4, XCHAL_INTLEVEL1_MASK
+    and     a2, a2, a3
+    and     a2, a2, a4
+    beqz    a2, .L_int_done1
+
+    neg     a3,a2
+    and     a3,a3,a2
+    wsr     a3,INTCLEAR
+
+    find_ls_one a2, a3
+    mov     a6,a2
+    call4   OS_EnterIntHook
+
+    mov     a6,a2
+    call4   OS_InterruptHandler
+
+    mov     a6,a2
+    call4   OS_ExitIntHook
+    j       .L_xt_user_int
+
+.L_int_done1:
+
+
+.L_xt_user_done:
+    call0   XT_RTOS_INT_EXIT
+
+    .end      literal_prefix
+
+    .begin      literal_prefix .iram0
+    .section    .iram0.text, "ax"
+    .global     OS_UserExit
+    .type       OS_UserExit,@function
+    .align      4
+OS_UserExit:
+    l32i    a0, sp, XT_STK_PS               /* retrieve interruptee's PS */
+    wsr     a0, PS
+    l32i    a0, sp, XT_STK_PC               /* retrieve interruptee's PC */
+    wsr     a0, EPC_1
+    l32i    a0, sp, XT_STK_A0               /* retrieve interruptee's A0 */
+    l32i    sp, sp, XT_STK_A1               /* remove interrupt stack frame */
+    rsync                                   /* ensure PS and EPC written */
+    rfe                                     /* PS.EXCM is cleared */
+
+    .end      literal_prefix
+
+    .begin      literal_prefix .iram0
+    .section    .iram0.text, "ax"
+    .type       OS_SyscallException,@function
+    .align      4
+/*****************************************************************************
+ OS_SyscallException
+*****************************************************************************/
+OS_SyscallException:
+    addi    sp, sp, -XT_STK_FRMSZ           /* allocate interrupt stack frame */
+    s32i    a12, sp, XT_STK_A12             /* _xt_context_save requires A12- */
+    s32i    a13, sp, XT_STK_A13             /* A13 to have already been saved */
+    call0   OS_ContextSave
+
+
+    /*
+    2)update PC*/
+    rsr     a2, EPC_1
+    addi    a3, a2, 3
+
+    rsr     a0, LEND
+    bne     a3, a0, 1f
+    rsr     a0, LCOUNT
+    beqz    a0, 1f
+    addi    a0, a0, -1
+    rsr     a3, LBEG
+    wsr     a0, LCOUNT
+
+1:  wsr     a3, EPC_1
+
+    /* Restore context,exception */
+    call0   OS_ContextRestore
+    addi    sp, sp, XT_STK_FRMSZ
+
+    movi    a0, -1
+    movnez  a2, a0, a2                      /* return -1 if not syscall 0 */
+    rsr     a0, EXCSAVE_1
+    rfe
+
+
+
+    .end      literal_prefix
+
+    .begin      literal_prefix .iram0
+    .section    .iram0.text, "ax"
+    .type   OS_CoProcessorException,@function
+    .align  4
+/*****************************************************************************
+ OS_CoProcessorException
+*****************************************************************************/
+OS_CoProcessorException:                             /* a5 = CP index */
+
+    s32i    a2,  sp, XT_STK_A2
+    s32i    a3,  sp, XT_STK_A3
+    s32i    a4,  sp, XT_STK_A4
+    s32i    a15, sp, XT_STK_A15
+
+
+    /* co-processor old owner new owner. */
+    call0   XT_RTOS_CP_STATE                /* a15 = new owner's save area */
+    beqz    a15, .L_xt_coproc_invalid       /* not in a thread (invalid) */
+
+    mov     a0, a5                          /* a0 = CP index */
+    movi    a3, g_awVosCoprocOwnerSa
+    addx4   a3, a0, a3                      /* a3 = &g_awVosCoprocOwnerSa[CP] */
+    l32i    a2, a3, 0                       /* a2 = old owner's save area */
+
+    /* Enable the co-processor's bit in CPENABLE. */
+    movi    a4, g_bVosCoprocMask
+    rsr     a5, CPENABLE                    /* a5 = CPENABLE */
+    add     a4, a4, a0
+    l8ui    a4, a4, 0                       /* a4 = bitmask from CP index */
+    or      a5, a5, a4                      /* a5 = CPENABLE + CP */
+    wsr     a5, CPENABLE
+
+
+    beq     a15, a2, .L_xt_coproc_done      /* new owner == old, we're done */
+
+    s32i    a15, a3,  0                     /* g_awVosCoprocOwnerSa[CP] = new */
+
+    l8ui    a5,  a15, XT_CPSTORED           /* a5 = new owner's old CPSTORED */
+    neg     a3,  a4
+    addi    a3,  a3, -1                     /* a3 = ~a4 (bitmask for CP) */
+    and     a3,  a5,  a3                    /* clr CP in new owner's CPSTORED */
+    s8i     a3,  a15, XT_CPSTORED           /* update new owner's CPSTORED */
+
+    /* Adjust new owner's save area pointers to area for CP n. */
+    movi    a3,  g_awVosCoprocSaOffset
+    and     a5,  a5,  a4                    /* a5 = new owner's CP is stored */
+    addx4   a3,  a0,  a3                    /* a3 = &OS_CoprocSaOffset[CP] */
+    l32i    a3,  a3,  0                     /* a3 = XT_CP[CP]_SA */
+    add     a15, a15, a3                    /* a15 = new owner's area for CP */
+    moveqz  a15, a5,  a5                    /* a15 = 0 if state not stored */
+
+    rsync                                   /* ensure wsr.CPENABLE is complete */
+    beqz    a2, .L_xt_coproc_new            /* no old owner to save */
+
+    /* If old owner still needs CP, clear CP in CPENABLE and set in CPSTORED. */
+    l8ui    a5,  a2,  XT_CPENABLE           /* a5 = old owner's CPENABLE */
+    and     a4,  a5,  a4                    /* a4 = CP in old owner CPENABLE */
+    beqz    a4,  .L_xt_coproc_new           /* discard old owner's CP state */
+
+    sub     a5,  a5,  a4                    /* clr CP in old owner's CPENABLE */
+    s8i     a5,  a2,  XT_CPENABLE           /* update old owner's CPENABLE */
+    l8ui    a5,  a2,  XT_CPSTORED           /* a5 = old owner's CPSTORED */
+    or      a5,  a5,  a4                    /* set CP in old owner's CPSTORED */
+    s8i     a5,  a2,  XT_CPSTORED           /* update old owner's CPSTORED */
+
+    /* Save co-processor state of old owner. */
+.Ln_xt_coproc_old:
+    add     a2, a2, a3                      /* a2 = old owner's area for CP */
+    mov     a3, a0                          /* a3 = CP index */
+    /*
+    The config-specific HAL macro invoked below destroys a2-5, preserves a0-1.
+    It is theoretically possible for Xtensa processor designers to write TIE
+    that causes more address registers to be affected, but it is generally
+    unlikely. If that ever happens, more registers needs to be saved/restored
+    around this macro invocation, and the value in a15 needs to be recomputed.
+    */
+    xchal_cpi_store_funcbody
+
+    /* Restore co-processor state of new owner. */
+.L_xt_coproc_new:
+    beqz    a15, .L_xt_coproc_done          /* no valid state to restore */
+    mov     a2,  a15                        /* a2 = new owner's area for CP */
+    mov     a3,  a0                         /* a3 = CP index */
+
+    xchal_cpi_load_funcbody
+
+
+.L_xt_coproc_done:
+    l32i    a15, sp, XT_STK_A15
+    l32i    a5,  sp, XT_STK_A5
+    l32i    a4,  sp, XT_STK_A4
+    l32i    a3,  sp, XT_STK_A3
+    l32i    a2,  sp, XT_STK_A2
+    call0   OS_UserExit
+
+.L_xt_coproc_invalid:
+    call0   OS_Panic                       /* not in a thread (invalid) */
+    .end      literal_prefix
+
+    .begin      literal_prefix .Level2InterruptVector
+    .section    .Level2InterruptVector.text, "ax"
+    .global     OS_Level2Vector
+    .type       OS_Level2Vector,@function
+    .align      4
+/*****************************************************************************
+ _Level2Vector
+*****************************************************************************/
+OS_Level2Vector:
+    wsr     a0, EXCSAVE_2                   /* preserve a0 */
+    call0   OS_Medint2                     /* load interrupt handler */
+
+    .end        literal_prefix
+
+    .begin      literal_prefix .iram0
+    .section    .iram0.text, "ax"
+    .extern     OS_InterruptHandler
+    .type       OS_Medint2,@function
+    .align      4
+OS_Medint2:
+
+#movi a1, 0xdeadbeef
+    movi a1, 0xe8075000
+    movi a2, 0xe8075e30 /*HIFI_RESERVE1_LOCATION*/
+    s32i a1, a2, 0
+
+    mov     a0, sp                          /* sp == a1 */
+    addi    sp, sp, -XT_STK_FRMSZ           /* allocate interrupt stack frame */
+    s32i    a0, sp, XT_STK_A1               /* save pre-interrupt SP */
+    rsr     a0, EPS_2                       /* save interruptee's PS */
+    s32i    a0, sp, XT_STK_PS
+    rsr     a0, EPC_2                       /* save interruptee's PC */
+    s32i    a0, sp, XT_STK_PC
+    rsr     a0, EXCSAVE_2                   /* save interruptee's a0 */
+    s32i    a0, sp, XT_STK_A0
+    movi    a0, OS_Medint2Exit              /* save exit point for dispatch */
+    s32i    a0, sp, XT_STK_EXIT
+
+    call0   XT_RTOS_INT_ENTER
+
+    movi    a0, PS_INTLEVEL(2) | PS_UM | PS_WOE
+    wsr     a0, PS
+    rsync
+
+
+.L_ProcAllInt2:
+    rsr     a2, INTENABLE
+    rsr     a3, INTERRUPT
+    movi    a4, XCHAL_INTLEVEL2_MASK
+    and     a2, a2, a3
+    and     a2, a2, a4
+    beqz    a2, .L_int_done2
+
+    neg     a3,a2
+    and     a3,a3,a2
+    wsr     a3,INTCLEAR
+
+    find_ls_one a2, a3
+    mov     a6,a2
+    call4   OS_EnterIntHook
+
+    mov     a6,a2
+    call4   OS_InterruptHandler
+
+    mov     a6,a2
+    call4   OS_ExitIntHook
+    j       .L_ProcAllInt2
+
+.L_int_done2:
+    call0   XT_RTOS_INT_EXIT
+
+    .end      literal_prefix
+
+    .begin      literal_prefix .iram0
+    .section    .iram0.text, "ax"
+    .global     OS_Medint2Exit
+    .type       OS_Medint2Exit,@function
+    .align      4
+OS_Medint2Exit:
+    /* Restore only level-specific regs (the rest were already restored) */
+    l32i    a0, sp, XT_STK_PS               /* retrieve interruptee's PS */
+    wsr     a0, EPS_2
+    l32i    a0, sp, XT_STK_PC               /* retrieve interruptee's PC */
+    wsr     a0, EPC_2
+    l32i    a0, sp, XT_STK_A0               /* retrieve interruptee's A0 */
+    l32i    sp, sp, XT_STK_A1               /* remove interrupt stack frame */
+    rsync                                   /* ensure EPS and EPC written */
+    rfi     2
+    .end      literal_prefix
+
+
+    .begin      literal_prefix .Level3InterruptVector
+    .section    .Level3InterruptVector.text, "ax"
+    .global     OS_Level3Vector
+    .type       OS_Level3Vector,@function
+    .align      4
+/*****************************************************************************
+ _Level3Vector
+*****************************************************************************/
+OS_Level3Vector:
+    wsr     a0, EXCSAVE_3                   /* preserve a0 */
+    call0   OS_MedInt3                     /* load interrupt handler */
+
+    .end        literal_prefix
+
+    .begin      literal_prefix .iram0
+    .section    .iram0.text, "ax"
+    .extern OS_InterruptHandler
+    .type       OS_MedInt3,@function
+    .align      4
+OS_MedInt3:
+
+    mov     a0, sp                          /* sp == a1 */
+    addi    sp, sp, -XT_STK_FRMSZ           /* allocate interrupt stack frame */
+    s32i    a0, sp, XT_STK_A1               /* save pre-interrupt SP */
+    rsr     a0, EPS_3                       /* save interruptee's PS */
+    s32i    a0, sp, XT_STK_PS
+    rsr     a0, EPC_3                       /* save interruptee's PC */
+    s32i    a0, sp, XT_STK_PC
+    rsr     a0, EXCSAVE_3                   /* save interruptee's a0 */
+    s32i    a0, sp, XT_STK_A0
+    movi    a0, OS_Medint3Exit            /* save exit point for dispatch */
+    s32i    a0, sp, XT_STK_EXIT
+
+    call0   XT_RTOS_INT_ENTER
+
+    movi    a0, PS_INTLEVEL(3) | PS_UM | PS_WOE
+    wsr     a0, PS
+    rsync
+
+
+.L_ProcAllInt3:
+    rsr     a2, INTENABLE
+    rsr     a3, INTERRUPT
+    movi    a4, XCHAL_INTLEVEL3_MASK
+    and     a2, a2, a3
+    and     a2, a2, a4
+    beqz    a2, .L_int_done3
+
+    neg     a3,a2
+    and     a3,a3,a2
+    wsr     a3,INTCLEAR
+
+    find_ls_one a2, a3
+    mov     a6,a2
+    call4   OS_EnterIntHook
+
+    mov     a6,a2
+    call4   OS_InterruptHandler
+
+    mov     a6,a2
+    call4   OS_ExitIntHook
+    j       .L_ProcAllInt3
+
+.L_int_done3:
+
+    call0   XT_RTOS_INT_EXIT
+
+    .end      literal_prefix
+
+    .begin      literal_prefix .iram0
+    .section    .iram0.text, "ax"
+    .global     OS_Medint3Exit
+    .type       OS_Medint3Exit,@function
+    .align      4
+OS_Medint3Exit:
+    /* Restore only level-specific regs (the rest were already restored) */
+    l32i    a0, sp, XT_STK_PS               /* retrieve interruptee's PS */
+    wsr     a0, EPS_3
+    l32i    a0, sp, XT_STK_PC               /* retrieve interruptee's PC */
+    wsr     a0, EPC_3
+    l32i    a0, sp, XT_STK_A0               /* retrieve interruptee's A0 */
+    l32i    sp, sp, XT_STK_A1               /* remove interrupt stack frame */
+    rsync                                   /* ensure EPS and EPC written */
+    rfi     3
+    .end      literal_prefix
+
+
+    .begin      literal_prefix .NMIExceptionVector
+    .section    .NMIExceptionVector.text, "ax"
+    .global     OS_NMIExceptionVector
+    .align      8
+/*****************************************************************************
+ OS_NMIExceptionVector
+*****************************************************************************/
+OS_NMIExceptionVector:
+    /*wsr     a3, 213
+    wsr     a4, 214*/
+
+    /*movi    a3, 0x0
+    movi    a4, 0xf711a510
+    s32i    a3, a4, 0*/
+
+    /*rsr     a3, 213
+    rsr     a4, 214*/
+
+    movi    a0, PS_INTLEVEL(3) | PS_UM | PS_WOE
+    wsr     a0, PS
+    rsync
+    rsr     a2, EXCCAUSE
+    mov     a6,a2
+    mov     a7,a1
+    call4   OS_NmiHook
+
+    rfi     XCHAL_NMILEVEL
+
+    .end        literal_prefix
+
+    .section .WindowVectors.text, "ax"
+
+/*
+--------------------------------------------------------------------------------
+Window Overflow Exception for Call4.
+
+Invoked if a call[i] referenced a register (a4-a15)
+that contains data from ancestor call[j];
+call[j] had done a call4 to call[j+1].
+On entry here:
+    window rotated to call[j] start point;
+        a0-a3 are registers to be saved;
+        a4-a15 must be preserved;
+        a5 is call[j+1]'s stack pointer.
+--------------------------------------------------------------------------------
+*/
+
+    .org    0x0
+    .global _WindowOverflow4
+_WindowOverflow4:
+
+    s32e    a0, a5, -16     /* save a0 to call[j+1]'s stack frame */
+    s32e    a1, a5, -12     /* save a1 to call[j+1]'s stack frame */
+    s32e    a2, a5,  -8     /* save a2 to call[j+1]'s stack frame */
+    s32e    a3, a5,  -4     /* save a3 to call[j+1]'s stack frame */
+    rfwo                    /* rotates back to call[i] position */
+
+/*
+--------------------------------------------------------------------------------
+Window Underflow Exception for Call4
+
+Invoked by RETW returning from call[i+1] to call[i]
+where call[i]'s registers must be reloaded (not live in ARs);
+where call[i] had done a call4 to call[i+1].
+On entry here:
+        window rotated to call[i] start point;
+        a0-a3 are undefined, must be reloaded with call[i].reg[0..3];
+        a4-a15 must be preserved (they are call[i+1].reg[0..11]);
+        a5 is call[i+1]'s stack pointer.
+--------------------------------------------------------------------------------
+*/
+
+    .org    0x40
+    .global _WindowUnderflow4
+_WindowUnderflow4:
+
+    l32e    a0, a5, -16     /* restore a0 from call[i+1]'s stack frame */
+    l32e    a1, a5, -12     /* restore a1 from call[i+1]'s stack frame */
+    l32e    a2, a5,  -8     /* restore a2 from call[i+1]'s stack frame */
+    l32e    a3, a5,  -4     /* restore a3 from call[i+1]'s stack frame */
+    rfwu
+
+    .global     OS_AllocaException
+    .align      4
+/*****************************************************************************
+ OS_AllocaException
+*****************************************************************************/
+OS_AllocaException:
+
+    rsr     a0, WINDOWBASE  /* grab WINDOWBASE before rotw changes it */
+    rotw    -1              /* WINDOWBASE goes to a4, new a0-a3 are scratch */
+    rsr     a2, PS
+    extui   a3, a2, XCHAL_PS_OWB_SHIFT, XCHAL_PS_OWB_BITS
+    xor     a3, a3, a4      /* bits changed from old to current windowbase */
+    rsr     a4, EXCSAVE_1   /* restore original a0 (now in a4) */
+    slli    a3, a3, XCHAL_PS_OWB_SHIFT
+    xor     a2, a2, a3      /* flip changed bits in old window base */
+    wsr     a2, PS          /* update PS.OWB to new window base */
+    rsync
+
+    _bbci.l a4, 31, _WindowUnderflow4
+    rotw    -1              /* original a0 goes to a8 */
+    _bbci.l a8, 30, _WindowUnderflow8
+    rotw    -1
+    j               _WindowUnderflow12
+
+
+
+/*
+--------------------------------------------------------------------------------
+Window Overflow Exception for Call8
+
+Invoked if a call[i] referenced a register (a4-a15)
+that contains data from ancestor call[j];
+call[j] had done a call8 to call[j+1].
+On entry here:
+    window rotated to call[j] start point;
+        a0-a7 are registers to be saved;
+        a8-a15 must be preserved;
+        a9 is call[j+1]'s stack pointer.
+--------------------------------------------------------------------------------
+*/
+
+    .org    0x80
+    .global _WindowOverflow8
+_WindowOverflow8:
+
+    s32e    a0, a9, -16     /* save a0 to call[j+1]'s stack frame */
+    l32e    a0, a1, -12     /* a0 <- call[j-1]'s sp
+                               (used to find end of call[j]'s frame) */
+    s32e    a1, a9, -12     /* save a1 to call[j+1]'s stack frame */
+    s32e    a2, a9,  -8     /* save a2 to call[j+1]'s stack frame */
+    s32e    a3, a9,  -4     /* save a3 to call[j+1]'s stack frame */
+    s32e    a4, a0, -32     /* save a4 to call[j]'s stack frame */
+    s32e    a5, a0, -28     /* save a5 to call[j]'s stack frame */
+    s32e    a6, a0, -24     /* save a6 to call[j]'s stack frame */
+    s32e    a7, a0, -20     /* save a7 to call[j]'s stack frame */
+    rfwo                    /* rotates back to call[i] position */
+
+/*
+--------------------------------------------------------------------------------
+Window Underflow Exception for Call8
+
+Invoked by RETW returning from call[i+1] to call[i]
+where call[i]'s registers must be reloaded (not live in ARs);
+where call[i] had done a call8 to call[i+1].
+On entry here:
+        window rotated to call[i] start point;
+        a0-a7 are undefined, must be reloaded with call[i].reg[0..7];
+        a8-a15 must be preserved (they are call[i+1].reg[0..7]);
+        a9 is call[i+1]'s stack pointer.
+--------------------------------------------------------------------------------
+*/
+
+    .org    0xC0
+    .global _WindowUnderflow8
+_WindowUnderflow8:
+
+    l32e    a0, a9, -16     /* restore a0 from call[i+1]'s stack frame */
+    l32e    a1, a9, -12     /* restore a1 from call[i+1]'s stack frame */
+    l32e    a2, a9,  -8     /* restore a2 from call[i+1]'s stack frame */
+    l32e    a7, a1, -12     /* a7 <- call[i-1]'s sp
+                               (used to find end of call[i]'s frame) */
+    l32e    a3, a9,  -4     /* restore a3 from call[i+1]'s stack frame */
+    l32e    a4, a7, -32     /* restore a4 from call[i]'s stack frame */
+    l32e    a5, a7, -28     /* restore a5 from call[i]'s stack frame */
+    l32e    a6, a7, -24     /* restore a6 from call[i]'s stack frame */
+    l32e    a7, a7, -20     /* restore a7 from call[i]'s stack frame */
+    rfwu
+
+/*
+--------------------------------------------------------------------------------
+Window Overflow Exception for Call12
+
+Invoked if a call[i] referenced a register (a4-a15)
+that contains data from ancestor call[j];
+call[j] had done a call12 to call[j+1].
+On entry here:
+    window rotated to call[j] start point;
+        a0-a11 are registers to be saved;
+        a12-a15 must be preserved;
+        a13 is call[j+1]'s stack pointer.
+--------------------------------------------------------------------------------
+*/
+
+    .org    0x100
+    .global _WindowOverflow12
+_WindowOverflow12:
+
+    s32e    a0,  a13, -16   /* save a0 to call[j+1]'s stack frame */
+    l32e    a0,  a1,  -12   /* a0 <- call[j-1]'s sp
+                               (used to find end of call[j]'s frame) */
+    s32e    a1,  a13, -12   /* save a1 to call[j+1]'s stack frame */
+    s32e    a2,  a13,  -8   /* save a2 to call[j+1]'s stack frame */
+    s32e    a3,  a13,  -4   /* save a3 to call[j+1]'s stack frame */
+    s32e    a4,  a0,  -48   /* save a4 to end of call[j]'s stack frame */
+    s32e    a5,  a0,  -44   /* save a5 to end of call[j]'s stack frame */
+    s32e    a6,  a0,  -40   /* save a6 to end of call[j]'s stack frame */
+    s32e    a7,  a0,  -36   /* save a7 to end of call[j]'s stack frame */
+    s32e    a8,  a0,  -32   /* save a8 to end of call[j]'s stack frame */
+    s32e    a9,  a0,  -28   /* save a9 to end of call[j]'s stack frame */
+    s32e    a10, a0,  -24   /* save a10 to end of call[j]'s stack frame */
+    s32e    a11, a0,  -20   /* save a11 to end of call[j]'s stack frame */
+    rfwo                    /* rotates back to call[i] position */
+
+/*
+--------------------------------------------------------------------------------
+Window Underflow Exception for Call12
+
+Invoked by RETW returning from call[i+1] to call[i]
+where call[i]'s registers must be reloaded (not live in ARs);
+where call[i] had done a call12 to call[i+1].
+On entry here:
+        window rotated to call[i] start point;
+        a0-a11 are undefined, must be reloaded with call[i].reg[0..11];
+        a12-a15 must be preserved (they are call[i+1].reg[0..3]);
+        a13 is call[i+1]'s stack pointer.
+--------------------------------------------------------------------------------
+*/
+
+    .org 0x140
+    .global _WindowUnderflow12
+_WindowUnderflow12:
+
+    l32e    a0,  a13, -16   /* restore a0 from call[i+1]'s stack frame */
+    l32e    a1,  a13, -12   /* restore a1 from call[i+1]'s stack frame */
+    l32e    a2,  a13,  -8   /* restore a2 from call[i+1]'s stack frame */
+    l32e    a11, a1,  -12   /* a11 <- call[i-1]'s sp
+                               (used to find end of call[i]'s frame) */
+    l32e    a3,  a13,  -4   /* restore a3 from call[i+1]'s stack frame */
+    l32e    a4,  a11, -48   /* restore a4 from end of call[i]'s stack frame */
+    l32e    a5,  a11, -44   /* restore a5 from end of call[i]'s stack frame */
+    l32e    a6,  a11, -40   /* restore a6 from end of call[i]'s stack frame */
+    l32e    a7,  a11, -36   /* restore a7 from end of call[i]'s stack frame */
+    l32e    a8,  a11, -32   /* restore a8 from end of call[i]'s stack frame */
+    l32e    a9,  a11, -28   /* restore a9 from end of call[i]'s stack frame */
+    l32e    a10, a11, -24   /* restore a10 from end of call[i]'s stack frame */
+    l32e    a11, a11, -20   /* restore a11 from end of call[i]'s stack frame */
+    rfwu
+
+
+
diff --git a/hifi/xaf/hifi-dpf/ipc/xt-shmem/hikey/reset.S b/hifi/xaf/hifi-dpf/ipc/xt-shmem/hikey/reset.S
new file mode 100644
index 0000000..b2cb268
--- /dev/null
+++ b/hifi/xaf/hifi-dpf/ipc/xt-shmem/hikey/reset.S
@@ -0,0 +1,460 @@
+/*******************************************************************************
+* Copyright (C) 2018 Cadence Design Systems, Inc.
+* 
+* Permission is hereby granted, free of charge, to any person obtaining
+* a copy of this software and associated documentation files (the
+* "Software"), to use this Software with Cadence processor cores only and 
+* not with any other processors and platforms, subject to
+* the following conditions:
+* 
+* The above copyright notice and this permission notice shall be included
+* in all copies or substantial portions of the Software.
+* 
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+******************************************************************************/
+/******************************************************************************
+  reset.S
+  reset vector for BALONGV7R1 architechure,Any problem pls refer
+  to the Xtensa Microprocessor Programmer's Guide.
+******************************************************************************/
+
+#include <xtensa/coreasm.h>
+#include <xtensa/simcall.h>
+#include "reset.h"
+
+    .begin      literal_prefix .ResetVector
+    .section    .ResetVector.text, "ax"
+    .global     _ResetVector
+    .align      4
+
+_ResetVector:
+       j       _Reset
+
+    .end        literal_prefix
+
+    /*****************************************************************************
+    Reset
+    *****************************************************************************/
+    .begin      literal_prefix .Reset
+    .section    .Reset.text, "ax"
+    .global     _Reset
+    .align      4
+
+_Reset:
+    /* clear all of interrupts*/
+       movi    a0, 0
+       wsr     a0, INTENABLE
+
+    wsr     a0, IBREAKA_0
+    wsr     a0, IBREAKA_1
+    wsr     a0, DBREAKA_0
+    wsr     a0, DBREAKA_1
+       wsr     a0, DBREAKC_0
+       wsr     a0, DBREAKC_1
+    wsr     a0, IBREAKENABLE
+
+    /* ICOUNT，ICOUNTLEVEL，ICOUNTexception  clear ICOUNT and ICOUNTLEVEL*/
+    wsr     a0, ICOUNT
+       wsr     a0, ICOUNTLEVEL
+       isync
+
+    /*debug disable XCHAL_DEBUGLEVEL*/
+       rsil    a1, XCHAL_DEBUGLEVEL - 1
+
+// write windowbase and windowstart, then do rsync.
+// reload a0 with 0, because registers may have moved after
+// writing windowbase/windowstart.
+       wsr     a0, CCOUNT
+    /* init register windows*/
+       wsr     a0, WINDOWBASE
+       rsync
+       movi    a1, 1
+       wsr     a1, WINDOWSTART
+
+       ssai    0
+
+    /*Level-1 init EXCSAVE_1 level-1 interrupt*/
+       wsr     a0, EXCSAVE_1
+       wsr     a0, EPC_1
+       wsr     a0, EXCCAUSE
+
+    /*Level-2 init EXCSAVE_1 level-2 interrupt*/
+       wsr     a0, EPC_2
+       wsr     a0, EPS_2
+       wsr     a0, EXCSAVE_2
+
+    /*Level-3 init EXCSAVE_1 level-3 interrupt*/
+       wsr     a0, EPC_3
+       wsr     a0, EPS_3
+       wsr     a0, EXCSAVE_3
+
+    /*Level-4 init EXCSAVE_1 level-4 interrupt*/
+       wsr     a0, EPC_4
+       wsr     a0, EPS_4
+       wsr     a0, EXCSAVE_4
+
+    /*Level-5(DEBUG) init EXCSAVE_1 level-5 interrupt*/
+       wsr     a0, EPC_5
+       wsr     a0, EPS_5
+       wsr     a0, EXCSAVE_5
+
+    /*NMI init EXCSAVE_1 level-6(NMI) interrupt */
+    wsr     a0, EPC_6
+       wsr     a0, EPS_6
+       wsr     a0, EXCSAVE_6
+
+
+       /*0/1/2 init timer 0&1 */
+       wsr     a0, CCOMPARE_0
+       wsr     a0, CCOMPARE_1
+       //wsr     a0, CCOMPARE_2  //hifi3 CCOMPARE_0 CCOMPARE_1
+
+    /* clear all of  */
+       movi    a2, XCHAL_INTTYPE_MASK_EXTERN_EDGE | XCHAL_INTTYPE_MASK_SOFTWARE
+       wsr     a2, INTCLEAR
+
+       wsr     a0, BR
+
+       /* disable coprocessor */
+       /*wsr     a0, CPENABLE*/
+
+       movi    a2, XCHAL_DEBUGLEVEL - 1
+       wsr     a2, PS
+       rsync
+
+
+    /*icache init icache */
+#if (XCHAL_ICACHE_SIZE != 0)
+    #if (XCHAL_ICACHE_SIZE == 8192)     //212GP and 330HiFi
+       movi    a2, 64
+    #elif (XCHAL_ICACHE_SIZE == 16384)  //232L and 570T
+    movi    a2, 128
+    #elif (XCHAL_ICACHE_SIZE == 32768)  //BALONGV7R1
+       movi    a2, 256
+    #elif (XCHAL_ICACHE_SIZE == 65536)  //CHICAGO HIFI
+       movi    a2, 256
+       #endif
+
+    /*icache unlock icache */
+    #if (XCHAL_ICACHE_LINESIZE == 128)
+       movi    a3, 0
+       loop    a2, .L0
+       iiu     a3, 0
+       iiu     a3, XCHAL_ICACHE_LINESIZE
+       addi    a3, a3, XCHAL_ICACHE_LINESIZE*2
+
+       iiu     a3, 0
+       iiu     a3, XCHAL_ICACHE_LINESIZE
+       addi    a3, a3, XCHAL_ICACHE_LINESIZE*2
+.L0:
+
+    #else
+       movi    a3, 0
+       loop    a2, .L0
+       iiu     a3, 0
+       iiu     a3, XCHAL_ICACHE_LINESIZE
+       iiu     a3, XCHAL_ICACHE_LINESIZE*2
+       iiu     a3, XCHAL_ICACHE_LINESIZE*3
+       addi    a3, a3, XCHAL_ICACHE_LINESIZE*4
+.L0:
+    #endif
+
+
+    #if (XCHAL_ICACHE_SIZE == 8192)     //212GP and 330HiFi
+       movi    a2, 64
+    #elif (XCHAL_ICACHE_SIZE == 16384)  //232L and 570T
+       movi    a2, 128
+    #elif (XCHAL_ICACHE_SIZE == 32768)  //BALONGV7R1
+       movi    a2, 256
+    #elif (XCHAL_ICACHE_SIZE == 65536)  //CHICAGO HIFI
+       movi    a2, 256
+    #endif
+
+    /*icache disable icache */
+       movi    a3, 0
+       loop    a2, .L1
+       iii     a3, 0
+       iii     a3, XCHAL_ICACHE_LINESIZE
+       iii     a3, XCHAL_ICACHE_LINESIZE*2
+       iii     a3, XCHAL_ICACHE_LINESIZE*3
+       addi    a3, a3, XCHAL_ICACHE_LINESIZE*4
+.L1:
+       isync
+#endif
+
+
+
+
+    /*dcache init dcache */
+#if (XCHAL_DCACHE_SIZE != 0)
+    #if (XCHAL_DCACHE_SIZE == 8192)     //212GP and 330HiFi
+       movi    a2, 64
+    #elif (XCHAL_DCACHE_SIZE == 16384)  //232L and 570T
+       movi    a2, 128
+    #elif (XCHAL_DCACHE_SIZE == 32768)  //BALONGV7R1
+       movi    a2, 256
+    #elif (XCHAL_DCACHE_SIZE == 65536)  //CHICAGO HIFI
+       movi    a2, 256
+    #endif
+
+    /*dcache unlock dcache */
+    #if (XCHAL_DCACHE_LINESIZE == 128)
+       movi    a3, 0
+       loop    a2, .L2
+       diu     a3, 0
+       diu     a3, XCHAL_DCACHE_LINESIZE
+       addi    a3, a3, XCHAL_DCACHE_LINESIZE*2
+
+       diu     a3, 0
+       diu     a3, XCHAL_DCACHE_LINESIZE
+       addi    a3, a3, XCHAL_DCACHE_LINESIZE*2
+.L2:
+
+    #else
+       movi    a3, 0
+       loop    a2, .L2
+       diu     a3, 0
+       diu     a3, XCHAL_DCACHE_LINESIZE
+       diu     a3, XCHAL_DCACHE_LINESIZE*2
+       diu     a3, XCHAL_DCACHE_LINESIZE*3
+       addi    a3, a3, XCHAL_DCACHE_LINESIZE*4
+.L2:
+    #endif
+    #if (XCHAL_DCACHE_SIZE == 8192)     //212GP and 330HiFi
+       movi    a2, 64
+    #elif (XCHAL_DCACHE_SIZE == 16384)  //232L and 570T
+       movi    a2, 128
+    #elif (XCHAL_DCACHE_SIZE == 32768)  //BALONGV7R1
+       movi    a2, 256
+    #elif (XCHAL_DCACHE_SIZE == 65536)  //CHICAGO HIFI
+       movi    a2, 256
+    #endif
+
+
+    /*dcache disable dcache */
+    movi    a3, 0
+       loop    a2, .L3
+       dii     a3, 0
+       dii     a3, XCHAL_DCACHE_LINESIZE
+       dii     a3, XCHAL_DCACHE_LINESIZE*2
+       dii     a3, XCHAL_DCACHE_LINESIZE*3
+       addi    a3, a3, XCHAL_DCACHE_LINESIZE*4
+.L3:
+       dsync
+#endif
+
+       /*
+       0x00000000-0x1fffffff   :   caches off(bypass)
+    0x20000000-0x3fffffff   :  caches off(bypass)
+    0x40000000-0x5fffffff   :   caches off(bypass)
+    0x60000000-0x7fffffff   :   caches off(bypass)
+    0x80000000-0x9fffffff   :   caches off(bypass)
+    0xa0000000-0xbfffffff   :   caches off(bypass)
+    0xc0000000-0xdfffffff   :   caches on，0x00000000-0x1fffffff
+    0xe0000000-0xffffffff   :   caches off(bypass),:0xe0000000~0xefffffff 0x20000000~0x2fffffff
+       */
+       /* config the memory access right */
+       movi    a3, 0x00000000     /*0x00000000-0x1fffffff*/
+	set_access_mode PIF_BYPASS     /*can not access*/
+
+       movi    a3, 0x20000000     /*0x20000000-0x3fffffff*/
+       set_access_mode PIF_BYPASS
+
+       movi    a3, 0x40000000     /*0x40000000-0x5fffffff*/
+#if (XCHAL_DCACHE_LINESIZE == 128)
+       set_access_mode PIF_BYPASS
+#else
+	set_access_mode PIF_BYPASS
+#endif
+
+       movi    a3, 0x60000000     /*0x60000000-0x7fffffff*/
+       	set_access_mode PIF_BYPASS
+
+       movi    a3, 0x80000000     /*0x80000000-0x9fffffff*/
+    #if (XCHAL_DCACHE_LINESIZE == 128)
+        set_access_mode PIF_BYPASS
+    #else
+       set_access_mode PIF_BYPASS
+    #endif
+
+       movi    a3, 0xa0000000     /*0xa0000000-0xbfffffff*/
+       set_access_mode PIF_BYPASS
+
+       movi    a3, 0xc0000000     /*0xc0000000-0xdfffffff*/
+       set_access_mode PIF_CACHED_WBA /*PIF_CACHED*/
+
+       movi    a3, 0xe0000000     /*0xe0000000-0xffffffff*/
+       set_access_mode PIF_BYPASS
+
+    /* 0x40000000 0xe0000000, 0x50000000 0xf0000000,*/
+    /*movi a2, 0x40000000 //vpn
+    movi a3, 0xe0000000 //ppn
+    movi a5, 0xE0000000 // tlb mask, upper 3 bits
+    and a4, a3, a5      // upper 3 bits of PPN area
+    and a7, a2, a5      // upper 3 bits of VPN area
+
+    ritlb1 a5, a7       // get current PPN+AM of segment for I
+    rdtlb1 a6, a7       // get current PPN+AM of segment for D
+    extui a5, a5, 0, 4  // keep only AM for I
+    extui a6, a6, 0, 4  // keep only AM for D
+    add a2, a4, a5      // combine new PPN with orig AM for I
+    add a3, a4, a6      // combine new PPN with orig AM for D
+    witlb a2, a7        // write new tlb mapping for I
+    wdtlb a3, a7        // write new tlb mapping for D
+    */
+    isync
+    dsync
+
+    /*
+    prepare the environment of run C code
+    */
+       movi    sp, __stack
+
+       movi    a2, PS_WOE_MASK | PS_PROGSTACK_MASK
+       wsr     a2, PS
+       rsync
+
+       movi    a8, _bss_start
+       movi    a10, _bss_end
+       sub     a11, a10, a8
+       srli    a11, a11, 2
+
+       movi    a9, 0
+    loopnez a11, zerodone
+       s32i    a9, a8, 0
+       addi    a8, a8, 4
+zerodone:
+
+       movi    a8, _ulpp_bss_start
+       movi    a10, _ulpp_bss_end
+       sub     a11, a10, a8
+       srli    a11, a11, 2
+
+       movi    a9, 0
+    loopnez a11, zerodone1
+       s32i    a9, a8, 0
+       addi    a8, a8, 4
+zerodone1:
+
+#ifdef HIFI_DTS_V3
+       movi    a8, _dtsv3_bss_start
+       movi    a10, _dtsv3_bss_end
+       sub     a11, a10, a8
+       srli    a11, a11, 2
+
+       movi    a9, 0
+    loopnez a11, zerodone2
+       s32i    a9, a8, 0
+       addi    a8, a8, 4
+zerodone2:
+#endif
+
+#ifdef HIFI_DTS_V4
+       movi    a8, _dtsv4_bss_start
+       movi    a10, _dtsv4_bss_end
+       sub     a11, a10, a8
+       srli    a11, a11, 2
+
+       movi    a9, 0
+    loopnez a11, zerodone3
+       s32i    a9, a8, 0
+       addi    a8, a8, 4
+zerodone3:
+#endif
+
+#ifdef HIFI_VLP
+       movi    a8, _efr_fr_hr_vlpd_bss_start
+       movi    a10, _efr_fr_hr_vlpd_bss_end
+       sub     a11, a10, a8
+       srli    a11, a11, 2
+
+       movi    a9, 0
+    loopnez a11, zerodone4
+       s32i    a9, a8, 0
+       addi    a8, a8, 4
+zerodone4:
+
+       movi    a8, _amr_vlpd_bss_start
+       movi    a10, _amr_vlpd_bss_end
+       sub     a11, a10, a8
+       srli    a11, a11, 2
+
+       movi    a9, 0
+    loopnez a11, zerodone5
+       s32i    a9, a8, 0
+       addi    a8, a8, 4
+zerodone5:
+
+       movi    a8, _vlpd_bss_start
+       movi    a10, _vlpd_bss_end
+       sub     a11, a10, a8
+       srli    a11, a11, 2
+
+       movi    a9, 0
+    loopnez a11, zerodone6
+       s32i    a9, a8, 0
+       addi    a8, a8, 4
+zerodone6:
+
+       movi    a8, _amrwb_vlpd_bss_start
+       movi    a10, _amrwb_vlpd_bss_end
+       sub     a11, a10, a8
+       srli    a11, a11, 2
+
+       movi    a9, 0
+    loopnez a11, zerodone7
+       s32i    a9, a8, 0
+       addi    a8, a8, 4
+zerodone7:
+#endif
+
+callmain:
+
+// Do NOT modify a1 here, it is the stack pointer.
+// Use another register instead (a3?)
+// Not sure why the NOPs are present.
+#movi a1, 0xdeadbeef
+    movi a1, 0xe8073000
+    movi a2, 0xe8075e10 /*HIFI_RESERVE1_LOCATION*/
+    s32i a1, a2, 0
+
+       movi    a0, 0
+       movi    a6, 0   /* clear argc*/
+       movi    a7, 0   /* clear argv*/
+       movi    a8, 0   /* clear envp*/
+       movi    a4, main
+       nop
+       nop
+       callx4  a4
+
+reset_exit:
+       movi    a2, SYS_exit
+// Where does it go from here ? execution will fall through into
+// whatever happens to follow. Either halt here or jump to some
+// specific code.
+
+    .end        literal_prefix
+
+#ifdef VOS_VENUS_TEST_STUB
+       .text
+       .global sim_call
+       .type sim_call,@function
+       .align 4
+sim_call:
+       entry sp, 64
+       addi    a4, a3,-3
+    movi    a3, g_auwVosTestMessageBuf
+    movi    a2, SYS_log_msg
+    simcall
+       retw
+
+#endif
+
+
diff --git a/hifi/xaf/hifi-dpf/ipc/xt-shmem/xf-main.c b/hifi/xaf/hifi-dpf/ipc/xt-shmem/xf-main.c
new file mode 100644
index 0000000..dd52bd2
--- /dev/null
+++ b/hifi/xaf/hifi-dpf/ipc/xt-shmem/xf-main.c
@@ -0,0 +1,189 @@
+/*******************************************************************************
+* Copyright (C) 2018 Cadence Design Systems, Inc.
+* 
+* Permission is hereby granted, free of charge, to any person obtaining
+* a copy of this software and associated documentation files (the
+* "Software"), to use this Software with Cadence processor cores only and 
+* not with any other processors and platforms, subject to
+* the following conditions:
+* 
+* The above copyright notice and this permission notice shall be included
+* in all copies or substantial portions of the Software.
+* 
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+******************************************************************************/
+
+/*******************************************************************************
+ * xf-main.c
+ *
+ * DSP processing framework main file
+ *
+ ******************************************************************************/
+
+#define MODULE_TAG                      MAIN
+
+/*******************************************************************************
+ * Includes
+ ******************************************************************************/
+
+#include "xf.h"
+#ifndef XAF_ENABLE_NON_HIKEY
+volatile int waitstate;
+#endif
+
+#ifdef XAF_PROFILE_DSP
+/* ... MCPS/profile info */
+#include "xa_profiler.h"
+#endif
+
+/*******************************************************************************
+ * Global data definition
+ ******************************************************************************/
+/* ...per-core execution data */
+xf_core_data_t          xf_core_data[XF_CFG_CORES_NUM];
+
+/* ...AP-DSP shared memory pool */
+xf_mm_pool_t            xf_ap_shmem_pool;
+
+/* ...per-core local memory pool */
+xf_mm_pool_t            xf_dsp_local_pool[XF_CFG_CORES_NUM];
+
+#if XF_CFG_CORES_NUM > 1
+/* ...DSP cluster shared memory pool */
+xf_mm_pool_t            xf_dsp_shmem_pool;
+#endif
+
+/* ...per-core shared memory with read-only access */
+__xf_core_ro_data_t     xf_core_ro_data[XF_CFG_CORES_NUM];
+
+/* ...per-core shared memory with read-write access */
+__xf_core_rw_data_t     xf_core_rw_data[XF_CFG_CORES_NUM];
+
+/*******************************************************************************
+ * Memory buffers - take them from linker file somehow - tbd
+ ******************************************************************************/
+
+/* ...unallocated memory region - AP-DSP shared memory buffer - export from linker somehow */
+//u8                      xf_ap_shmem_buffer[XF_CFG_REMOTE_IPC_POOL_SIZE] __xf_shmem__;
+
+#if XF_CFG_CORES_NUM > 1
+/* ...unallocated DSP shared memory buffer */
+u8                      xf_dsp_shmem_buffer[XF_CFG_LOCAL_IPC_POOL_SIZE] __xf_shmem__;
+#endif
+
+/* ...unallocated per-core local memory (in 32-byte chunks) */
+#ifdef XAF_ENABLE_NON_HIKEY
+u8                      xf_dsp_local_buffer[XF_CFG_CORES_NUM][XF_CFG_LOCAL_POOL_SIZE] __xf_mm__;
+#else
+u8                      xf_dsp_local_buffer[XF_CFG_CORES_NUM][XF_CFG_LOCAL_POOL_SIZE];
+//u8                      g_tmp[2];
+#endif
+
+#ifdef XAF_PROFILE_DSP
+xa_profiler prof;
+#endif
+
+/*******************************************************************************
+ * Timer interrupt - tbd
+ ******************************************************************************/
+
+/*******************************************************************************
+ * IPC layer initialization
+ ******************************************************************************/
+
+/* ...system-specific IPC layer initialization */
+int xf_ipc_init(u32 core)
+{
+    xf_core_data_t  *cd = XF_CORE_DATA(core);
+    xf_shmem_data_t *shmem = (xf_shmem_data_t *)XF_CFG_SHMEM_ADDRESS(core);
+
+    /* ...initialize pointer to shared memory */
+    cd->shmem = (xf_shmem_handle_t *)shmem;
+    shmem->buffer = (uint8_t *) HIFI_MUSIC_DATA_LOCATION;
+    /* ...global memory pool initialization */
+#ifdef XAF_ENABLE_NON_HIKEY
+    XF_CHK_API(xf_mm_init(&cd->shared_pool, shmem->buffer, XF_CFG_REMOTE_IPC_POOL_SIZE));
+#else
+    XF_CHK_API(xf_mm_init(&cd->shared_pool, (void *) HIFI_MUSIC_DATA_LOCATION, XF_CFG_REMOTE_IPC_POOL_SIZE));
+#endif
+    return 0;
+}
+
+/*******************************************************************************
+ * Core executive loop
+ ******************************************************************************/
+
+static void xf_core_loop(u32 core)
+{
+    /* ...initialize internal core structures */
+    xf_core_init(core);
+    
+#ifdef XAF_PROFILE_DSP
+/* Profiler initialization */
+    INIT_XA_PROFILER(prof,"DSP core");
+#endif
+
+    for(;;)
+    {
+        /* ...wait in a low-power mode until event is triggered */
+        xf_ipi_wait(core);
+        
+        /* ...service core event */
+        xf_core_service(core);
+    }
+}
+
+/*******************************************************************************
+ * Global entry point
+ ******************************************************************************/
+
+int main(void)
+{
+#if XF_CFG_CORES_NUM > 1
+    u32     i;
+#endif
+
+    /* ...reset ro/rw core data - tbd */
+    memset(xf_core_rw_data, 0, sizeof(xf_core_rw_data));
+    memset(xf_core_ro_data, 0, sizeof(xf_core_ro_data));
+
+    TRACE_INIT("Xtensa Audio DSP Codec Server");
+#ifdef XAF_ENABLE_NON_HIKEY
+    /* ...initialize board */
+    xf_board_init();
+
+    /* ...global framework data initialization */
+    xf_global_init();
+#endif
+
+#if XF_CFG_CORES_NUM > 1
+    /* ...DSP shared memory pool initialization */
+    XF_CHK_API(xf_mm_init(&xf_dsp_shmem_pool, xf_dsp_shmem_buffer, XF_CFG_LOCAL_IPC_POOL_SIZE));
+#endif
+
+    /* ...initialize per-core memory loop */
+    XF_CHK_API(xf_mm_init(&xf_core_data[0].local_pool, xf_dsp_local_buffer[0], XF_CFG_LOCAL_POOL_SIZE));
+
+#if XF_CFG_CORES_NUM > 1    
+    /* ...bring up all cores */
+    for (i = 1; i < XF_CFG_CORES_NUM; i++)
+    {
+        /* ...wake-up secondary core somehow and make it execute xf_core_loop */
+        xf_core_secondary_startup(i, xf_core_loop, i);
+        
+    }
+#endif
+
+    /* ...enter execution loop on main core #0 */
+    xf_core_loop(0);
+
+    /* ...not reachable */
+    return 0;
+}
diff --git a/hifi/xaf/hifi-dpf/plugins/cadence/mixer/xa-mixer.c b/hifi/xaf/hifi-dpf/plugins/cadence/mixer/xa-mixer.c
new file mode 100644
index 0000000..2191239
--- /dev/null
+++ b/hifi/xaf/hifi-dpf/plugins/cadence/mixer/xa-mixer.c
@@ -0,0 +1,669 @@
+/*******************************************************************************
+* Copyright (C) 2018 Cadence Design Systems, Inc.
+* 
+* Permission is hereby granted, free of charge, to any person obtaining
+* a copy of this software and associated documentation files (the
+* "Software"), to use this Software with Cadence processor cores only and 
+* not with any other processors and platforms, subject to
+* the following conditions:
+* 
+* The above copyright notice and this permission notice shall be included
+* in all copies or substantial portions of the Software.
+* 
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+******************************************************************************/
+
+/*******************************************************************************
+ * xa-mixer.c
+ *
+ * Sample mixer plugin
+ *
+ ******************************************************************************/
+
+#define MODULE_TAG                      MIXER
+
+/*******************************************************************************
+ * Includes
+ ******************************************************************************/
+
+#include "xf-plugin.h"
+#include "audio/xa-mixer-api.h"
+
+/*******************************************************************************
+ * Tracing configuration
+ ******************************************************************************/
+
+TRACE_TAG(INIT, 1);
+TRACE_TAG(PROCESS, 1);
+
+/*******************************************************************************
+ * Internal functions definitions
+ ******************************************************************************/
+
+/* ...API structure */
+typedef struct XAPcmMixer
+{
+    /* ...mixer state */
+    u32                 state;
+    
+    /* ...number of samples in a frame */
+    u32                 frame_size;
+    
+    /* ...number of channels (channel mask?) */
+    u32                 channels;
+    
+    /* ...PCM sample width */
+    u32                 pcm_width;
+
+    /* ...sampling rate */
+    u32                 sample_rate;
+
+    /* ...number of bytes in input/output buffer */
+    u32                 buffer_size;
+    
+    /* ...main volume and individual track volumes*/
+    u32                 volume[XA_MIXER_MAX_TRACK_NUMBER + 1];
+    
+    /* ...input buffers */
+    void               *input[XA_MIXER_MAX_TRACK_NUMBER];
+    
+    /* ...number of samples in individual buffers */
+    u32                 input_length[XA_MIXER_MAX_TRACK_NUMBER];
+
+    /* ...output buffer */
+    void               *output;
+
+    /* ...number of produced bytes - do I need that? have buffer-size already - tbd */
+    u32                 produced;
+    
+    /* ...scratch buffer pointer */
+    void               *scratch;
+    
+}   XAPcmMixer;
+
+/*******************************************************************************
+ * Mixer state flags
+ ******************************************************************************/
+
+#define XA_MIXER_FLAG_PREINIT_DONE      (1 << 0)
+#define XA_MIXER_FLAG_POSTINIT_DONE     (1 << 1)
+#define XA_MIXER_FLAG_RUNNING           (1 << 2)
+#define XA_MIXER_FLAG_OUTPUT            (1 << 3)
+#define XA_MIXER_FLAG_COMPLETE          (1 << 4)
+
+/*******************************************************************************
+ * DSP functions
+ ******************************************************************************/
+
+#define DSP_SATURATE_S16(s32)   \
+    (s16)((s32) > 0x7fff ? 0x7fff : ((s32) < -0x8000 ? -0x8000 : (s32)))
+
+/* ...mixer preinitialization (default parameters) */
+static inline void xa_mixer_preinit(XAPcmMixer *d)
+{
+    u32     i;
+    
+    /* ...pre-configuration initialization; reset internal data */
+    memset(d, 0, sizeof(*d));
+        
+    /* ...set default parameters */
+    d->pcm_width = 16, d->channels = 2, d->frame_size = 512;
+
+    /* ...set default volumes (last index is a main volume)*/
+    for (i = 0; i <= XA_MIXER_MAX_TRACK_NUMBER; i++)
+    {
+        d->volume[i] = ((1 << 12) << 16) | (1 << 12);
+    }
+}
+
+/* ...do mixing of stereo PCM-16 streams */
+static XA_ERRORCODE xa_mixer_do_execute_stereo_16bit(XAPcmMixer *d)
+{
+    s16    *output = d->output;
+    s16    *b[XA_MIXER_MAX_TRACK_NUMBER]; 
+    u16     v_l[XA_MIXER_MAX_TRACK_NUMBER];
+    u16     v_r[XA_MIXER_MAX_TRACK_NUMBER];
+    u16     w_l, w_r;    
+    u32     t32;
+    u32     i, j;
+    
+    /* ...retrieve main volume - assume up to 24dB amplifying (4 bits) */
+    t32 = d->volume[XA_MIXER_MAX_TRACK_NUMBER];
+    w_l = (u16)(t32 & 0xFFFF), w_r = (u16)(t32 >> 16);
+    
+    /* ...prepare individual tracks */
+    for (j = 0; j < XA_MIXER_MAX_TRACK_NUMBER; j++)
+    {
+        u32     n = d->input_length[j];
+        
+        /* ...check if we have input buffer available */
+        if (n == 0)
+        {
+            /* ...output silence (multiply garbage in the scratch buffer by 0) */
+            b[j] = d->scratch;
+            v_l[j] = v_r[j] = 0;
+        }
+        else
+        {
+            s32     k = (s32)(d->buffer_size - n);
+            
+            /* ...put input buffer */
+            XF_CHK_ERR(b[j] = d->input[j], XA_MIXER_EXEC_FATAL_INPUT);
+            
+            /* ...if length is not sufficient, pad buffer remainder */
+            (k > 0 ? memset((void *)b[j] + n, 0x00, k) : 0);
+            
+            /* ...set individual track volume/balance */
+            t32 = d->volume[j];
+            v_l[j] = (u16)(t32 & 0xFFFF), v_r[j] = (u16)(t32 >> 16);
+        }
+
+        TRACE(PROCESS, _b("b[%u] = %p%s"), j, b[j], (n == 0 ? " - scratch" : ""));
+    }
+
+    /* ...process all tracks */
+    for (i = 0; i < d->frame_size; i++)
+    {
+        s32     l32 = 0, r32 = 0;
+
+        /* ...fill-in every channel in our map (unrolls loop here) */
+        for (j = 0; j < XA_MIXER_MAX_TRACK_NUMBER; j++)
+        {
+            /* ...left channel processing (no saturation here yet) */
+            l32 += *b[j]++ * v_l[j];
+
+            /* ...right channel processing */
+            r32 += *b[j]++ * v_r[j];
+        }
+
+        /* ...normalize (truncate towards -inf) and multiply by main volume */
+        l32 = ((l32 >> 12) * w_l) >> 12;
+        r32 = ((r32 >> 12) * w_r) >> 12;
+
+        /* ...saturate and store in buffer */
+        *output++ = DSP_SATURATE_S16(l32);
+        *output++ = DSP_SATURATE_S16(r32);
+    }
+
+    /* ...save total number of produced bytes */
+    d->produced = (u32)((void *)output - d->output);
+
+    /* ...put flag saying we have output buffer */
+    d->state |= XA_MIXER_FLAG_OUTPUT;
+    
+    TRACE(PROCESS, _b("produced: %u bytes (%u samples)"), d->produced, d->frame_size);
+    
+    /* ...reset input buffer length? */
+    //memset(d->input_length, 0, sizeof(d->input_length));
+
+    /* ...return success result code */
+    return XA_NO_ERROR;
+}
+
+/* ...runtime reset */
+static XA_ERRORCODE xa_mixer_do_runtime_init(XAPcmMixer *d)
+{
+    /* ...no special processing is needed here */
+    return XA_NO_ERROR;
+}
+
+/*******************************************************************************
+ * Commands processing
+ ******************************************************************************/
+
+/* ...codec API size query */
+static XA_ERRORCODE xa_mixer_get_api_size(XAPcmMixer *d, WORD32 i_idx, pVOID pv_value)
+{
+    /* ...check parameters are valid */
+    XF_CHK_ERR(pv_value, XA_API_FATAL_INVALID_CMD_TYPE);
+    
+    /* ...retrieve API structure size */
+    *(WORD32 *)pv_value = sizeof(*d);
+    
+    return XA_NO_ERROR;
+}
+
+/* ...standard codec initialization routine */
+static XA_ERRORCODE xa_mixer_init(XAPcmMixer *d, WORD32 i_idx, pVOID pv_value)
+{
+    /* ...validity check - mixer must be valid */
+    XF_CHK_ERR(d, XA_API_FATAL_INVALID_CMD_TYPE);
+
+    /* ...process particular initialization type */
+    switch (i_idx)
+    {
+    case XA_CMD_TYPE_INIT_API_PRE_CONFIG_PARAMS:
+    {
+        /* ...pre-configuration initialization; reset internal data */
+        xa_mixer_preinit(d);
+
+        /* ...and mark mixer has been created */
+        d->state = XA_MIXER_FLAG_PREINIT_DONE;
+        
+        return XA_NO_ERROR;
+    }
+    
+    case XA_CMD_TYPE_INIT_API_POST_CONFIG_PARAMS:
+    {
+        /* ...post-configuration initialization (all parameters are set) */
+        XF_CHK_ERR(d->state & XA_MIXER_FLAG_PREINIT_DONE, XA_API_FATAL_INVALID_CMD_TYPE);
+    
+        /* ...calculate input/output buffer size in bytes */
+        d->buffer_size = d->channels * d->frame_size * (d->pcm_width == 16 ? sizeof(s16) : sizeof(s32));
+        
+        /* ...mark post-initialization is complete */
+        d->state |= XA_MIXER_FLAG_POSTINIT_DONE;
+        
+        return XA_NO_ERROR;
+    }
+    
+    case XA_CMD_TYPE_INIT_PROCESS:
+    {
+        /* ...kick run-time initialization process; make sure mixer is setup */
+        XF_CHK_ERR(d->state & XA_MIXER_FLAG_POSTINIT_DONE, XA_API_FATAL_INVALID_CMD_TYPE);
+
+        /* ...enter into execution stage */
+        d->state |= XA_MIXER_FLAG_RUNNING;
+        
+        return XA_NO_ERROR;
+    }
+    
+    case XA_CMD_TYPE_INIT_DONE_QUERY:
+    {
+        /* ...check if initialization is done; make sure pointer is valid */
+        XF_CHK_ERR(pv_value, XA_API_FATAL_INVALID_CMD_TYPE);
+        
+        /* ...put current status */
+        *(WORD32 *)pv_value = (d->state & XA_MIXER_FLAG_RUNNING ? 1 : 0);
+
+        return XA_NO_ERROR;
+    }
+    
+    default:
+        /* ...unrecognized command type */
+        TRACE(ERROR, _x("Unrecognized command type: %X"), i_idx);
+        return XA_API_FATAL_INVALID_CMD_TYPE;
+    }
+}
+
+/* ...set mixer configuration parameter */
+static XA_ERRORCODE xa_mixer_set_config_param(XAPcmMixer *d, WORD32 i_idx, pVOID pv_value)
+{
+    u32     i_value;
+    
+    /* ...validity check - mixer pointer must be valid */
+    XF_CHK_ERR(d && pv_value, XA_API_FATAL_INVALID_CMD_TYPE);
+
+    /* ...pre-initialization must be completed, mixer must be idle */
+    XF_CHK_ERR(d->state & XA_MIXER_FLAG_PREINIT_DONE, XA_API_FATAL_INVALID_CMD_TYPE);
+
+    /* ...get parameter value  */
+    i_value = (u32) *(WORD32 *)pv_value;
+    
+    /* ...process individual configuration parameter */
+    switch (i_idx)
+    {
+    case XA_MIXER_CONFIG_PARAM_PCM_WIDTH:
+        /* ...check value is permitted (16 bits only) */
+        XF_CHK_ERR(i_value == 16, XA_MIXER_CONFIG_NONFATAL_RANGE);
+        d->pcm_width = (u32)i_value;
+        return XA_NO_ERROR;
+
+    case XA_MIXER_CONFIG_PARAM_CHANNELS:
+        /* ...allow stereo only */
+        XF_CHK_ERR(i_value == 2, XA_MIXER_CONFIG_NONFATAL_RANGE);
+        d->channels = (u32)i_value;
+        return XA_NO_ERROR;
+
+    case XA_MIXER_CONFIG_PARAM_SAMPLE_RATE:
+        /* ...set mixer sample rate */
+        d->sample_rate = (u32)i_value;
+        return XA_NO_ERROR;
+        
+    default:
+        TRACE(ERROR, _x("Invalid parameter: %X"), i_idx);
+        return XA_API_FATAL_INVALID_CMD_TYPE;
+    }
+}
+
+/* ...retrieve configuration parameter */
+static XA_ERRORCODE xa_mixer_get_config_param(XAPcmMixer *d, WORD32 i_idx, pVOID pv_value)
+{
+    /* ...validity check - mixer must be initialized */
+    XF_CHK_ERR(d && pv_value, XA_API_FATAL_INVALID_CMD_TYPE);
+
+    /* ...make sure pre-initialization is completed */
+    XF_CHK_ERR(d->state & XA_MIXER_FLAG_PREINIT_DONE, XA_API_FATAL_INVALID_CMD_TYPE);
+    
+    /* ...process individual configuration parameter */
+    switch (i_idx)
+    {
+    case XA_MIXER_CONFIG_PARAM_INPUT_TRACKS:
+        /* ...return maximal number of input tracks supported */
+        *(WORD32 *)pv_value = XA_MIXER_MAX_TRACK_NUMBER;
+        return XA_NO_ERROR;
+        
+    case XA_MIXER_CONFIG_PARAM_SAMPLE_RATE:
+        /* ...return mixer sample rate */
+        *(WORD32 *)pv_value = d->sample_rate;
+        return XA_NO_ERROR;
+        
+    case XA_MIXER_CONFIG_PARAM_PCM_WIDTH:
+        /* ...return current PCM width */
+        *(WORD32 *)pv_value = d->pcm_width;
+        return XA_NO_ERROR;
+
+    case XA_MIXER_CONFIG_PARAM_CHANNELS:
+        /* ...return current channel number */
+        *(WORD32 *)pv_value = d->channels;
+        return XA_NO_ERROR;
+
+    case XA_MIXER_CONFIG_PARAM_FRAME_SIZE:
+        /* ...return current in/out frame length (in samples) */
+        *(WORD32 *)pv_value = d->frame_size;
+        return XA_NO_ERROR;
+
+    case XA_MIXER_CONFIG_PARAM_BUFFER_SIZE:
+        /* ...return current in/out frame length (in bytes) */
+        *(WORD32 *)pv_value = d->buffer_size;
+        return XA_NO_ERROR;
+
+    default:
+        TRACE(ERROR, _x("Invalid parameter: %X"), i_idx);
+        return XA_API_FATAL_INVALID_CMD_TYPE;
+    }
+}
+
+/* ...execution command */
+static XA_ERRORCODE xa_mixer_execute(XAPcmMixer *d, WORD32 i_idx, pVOID pv_value)
+{
+    /* ...validity check - mixer must be valid */
+    XF_CHK_ERR(d, XA_API_FATAL_INVALID_CMD_TYPE);
+    
+    /* ...mixer must be in running state */
+    XF_CHK_ERR(d->state & XA_MIXER_FLAG_RUNNING, XA_API_FATAL_INVALID_CMD_TYPE);
+    
+    /* ...process individual command type */
+    switch (i_idx)
+    {
+    case XA_CMD_TYPE_DO_EXECUTE:
+        /* ...perform mixing of the channels */
+        return xa_mixer_do_execute_stereo_16bit(d);
+        
+    case XA_CMD_TYPE_DONE_QUERY:
+        /* ...check if processing is complete */
+        XF_CHK_ERR(pv_value, XA_API_FATAL_INVALID_CMD_TYPE);
+        *(WORD32 *)pv_value = (d->state & XA_MIXER_FLAG_COMPLETE ? 1 : 0);
+        return XA_NO_ERROR;
+        
+    case XA_CMD_TYPE_DO_RUNTIME_INIT:
+        /* ...reset mixer operation */
+        return xa_mixer_do_runtime_init(d);
+        
+    default:
+        /* ...unrecognized command */
+        TRACE(ERROR, _x("Invalid index: %X"), i_idx);
+        return XA_API_FATAL_INVALID_CMD_TYPE;
+    }
+}
+
+/* ...set number of input bytes */
+static XA_ERRORCODE xa_mixer_set_input_bytes(XAPcmMixer *d, WORD32 i_idx, pVOID pv_value)
+{
+    u32     size;
+    
+    /* ...validity check - check parameters */
+    XF_CHK_ERR(d && pv_value, XA_API_FATAL_INVALID_CMD_TYPE);
+
+    /* ...track index must be valid */
+    XF_CHK_ERR(i_idx >= 0 && i_idx < XA_MIXER_MAX_TRACK_NUMBER, XA_API_FATAL_INVALID_CMD_TYPE);
+    
+    /* ...mixer must be initialized */
+    XF_CHK_ERR(d->state & XA_MIXER_FLAG_POSTINIT_DONE, XA_API_FATAL_INVALID_CMD_TYPE);
+    
+    /* ...input buffer must exist */
+    XF_CHK_ERR(d->input[i_idx], XA_API_FATAL_INVALID_CMD_TYPE);
+    
+    /* ...input frame length should not be zero (in bytes) */
+    XF_CHK_ERR((size = (u32)*(WORD32 *)pv_value) > 0, XA_MIXER_EXEC_NONFATAL_INPUT);
+
+    /* ...all is correct; set input buffer length in bytes */
+    d->input_length[i_idx] = size;
+    
+    return XA_NO_ERROR;
+}
+
+/* ...get number of output bytes */
+static XA_ERRORCODE xa_mixer_get_output_bytes(XAPcmMixer *d, WORD32 i_idx, pVOID pv_value)
+{
+    /* ...validity check - check parameters */
+    XF_CHK_ERR(d && pv_value, XA_API_FATAL_INVALID_CMD_TYPE);
+
+    /* ...track index must be zero */
+    XF_CHK_ERR(i_idx == XA_MIXER_MAX_TRACK_NUMBER, XA_API_FATAL_INVALID_CMD_TYPE);
+    
+    /* ...mixer must be running */
+    XF_CHK_ERR(d->state & XA_MIXER_FLAG_RUNNING, XA_API_FATAL_INVALID_CMD_TYPE);
+    
+    /* ...output buffer must exist */
+    XF_CHK_ERR(d->output, XA_MIXER_EXEC_NONFATAL_OUTPUT);
+
+    /* ...return number of produced bytes */
+    *(WORD32 *)pv_value = (d->state & XA_MIXER_FLAG_OUTPUT ? d->buffer_size : 0);
+
+    return XA_NO_ERROR;
+}
+
+/* ...get number of consumed bytes */
+static XA_ERRORCODE xa_mixer_get_curidx_input_buf(XAPcmMixer *d, WORD32 i_idx, pVOID pv_value)
+{
+    /* ...validity check - check parameters */
+    XF_CHK_ERR(d && pv_value, XA_API_FATAL_INVALID_CMD_TYPE);
+
+    /* ...track index must be valid */
+    XF_CHK_ERR(i_idx >= 0 && i_idx < XA_MIXER_MAX_TRACK_NUMBER, XA_API_FATAL_INVALID_CMD_TYPE);
+    
+    /* ...mixer must be running */
+    XF_CHK_ERR(d->state & XA_MIXER_FLAG_RUNNING, XA_MIXER_EXEC_FATAL_STATE);
+    
+    /* ...input buffer must exist */
+    XF_CHK_ERR(d->input[i_idx], XA_MIXER_EXEC_FATAL_INPUT);
+
+    /* ...return number of bytes consumed (always consume fixed-length chunk) */
+    *(WORD32 *)pv_value = d->input_length[i_idx], d->input_length[i_idx] = 0;
+    
+    return XA_NO_ERROR;
+}
+
+/*******************************************************************************
+ * Memory information API
+ ******************************************************************************/
+
+/* ..get total amount of data for memory tables */
+static XA_ERRORCODE xa_mixer_get_memtabs_size(XAPcmMixer *d, WORD32 i_idx, pVOID pv_value)
+{
+    /* ...basic validity checks */
+    XF_CHK_ERR(d && pv_value, XA_API_FATAL_INVALID_CMD_TYPE);
+
+    /* ...check mixer is pre-initialized */
+    XF_CHK_ERR(d->state & XA_MIXER_FLAG_PREINIT_DONE, XA_API_FATAL_INVALID_CMD_TYPE);
+    
+    /* ...we have all our tables inside API structure - good? tbd */
+    *(WORD32 *)pv_value = 0;
+    
+    return XA_NO_ERROR;
+}
+
+/* ..set memory tables pointer */
+static XA_ERRORCODE xa_mixer_set_memtabs_ptr(XAPcmMixer *d, WORD32 i_idx, pVOID pv_value)
+{
+    /* ...basic validity checks */
+    XF_CHK_ERR(d && pv_value, XA_API_FATAL_INVALID_CMD_TYPE);
+
+    /* ...check mixer is pre-initialized */
+    XF_CHK_ERR(d->state & XA_MIXER_FLAG_PREINIT_DONE, XA_API_FATAL_INVALID_CMD_TYPE);
+    
+    /* ...do not do anything; just return success - tbd */
+    return XA_NO_ERROR;
+}
+
+/* ...return total amount of memory buffers */
+static XA_ERRORCODE xa_mixer_get_n_memtabs(XAPcmMixer *d, WORD32 i_idx, pVOID pv_value)
+{
+    /* ...basic validity checks */
+    XF_CHK_ERR(d && pv_value, XA_API_FATAL_INVALID_CMD_TYPE);
+    
+    /* ...we have N input buffers, 1 output buffer and 1 scratch buffer */
+    *(WORD32 *)pv_value = XA_MIXER_MAX_TRACK_NUMBER + 1 + 1;
+    
+    return XA_NO_ERROR;
+}
+
+/* ...return memory buffer data */
+static XA_ERRORCODE xa_mixer_get_mem_info_size(XAPcmMixer *d, WORD32 i_idx, pVOID pv_value)
+{
+    /* ...basic validity check */
+    XF_CHK_ERR(d && pv_value, XA_API_FATAL_INVALID_CMD_TYPE);
+
+    /* ...return frame buffer minimal size only after post-initialization is done */
+    XF_CHK_ERR(d->state & XA_MIXER_FLAG_POSTINIT_DONE, XA_API_FATAL_INVALID_CMD_TYPE);
+
+    /* ...all buffers are of the same length */
+    *(WORD32 *)pv_value = (WORD32) d->buffer_size;
+        
+    return XA_NO_ERROR;
+}
+
+/* ...return memory alignment data */
+static XA_ERRORCODE xa_mixer_get_mem_info_alignment(XAPcmMixer *d, WORD32 i_idx, pVOID pv_value)
+{
+    /* ...basic validity check */
+    XF_CHK_ERR(d && pv_value, XA_API_FATAL_INVALID_CMD_TYPE);
+
+    /* ...return frame buffer minimal size only after post-initialization is done */
+    XF_CHK_ERR(d->state & XA_MIXER_FLAG_POSTINIT_DONE, XA_API_FATAL_INVALID_CMD_TYPE);
+
+    /* ...all buffers are 4-bytes aligned */
+    *(WORD32 *)pv_value = 4;
+        
+    return XA_NO_ERROR;
+}
+
+/* ...return memory type data */
+static XA_ERRORCODE xa_mixer_get_mem_info_type(XAPcmMixer *d, WORD32 i_idx, pVOID pv_value)
+{
+    /* ...basic validity check */
+    XF_CHK_ERR(d && pv_value, XA_API_FATAL_INVALID_CMD_TYPE);
+
+    /* ...return frame buffer minimal size only after post-initialization is done */
+    XF_CHK_ERR(d->state & XA_MIXER_FLAG_POSTINIT_DONE, XA_API_FATAL_INVALID_CMD_TYPE);
+
+    switch (i_idx)
+    {
+    case 0 ... XA_MIXER_MAX_TRACK_NUMBER - 1:
+        /* ...input buffers */
+        *(WORD32 *)pv_value = XA_MEMTYPE_INPUT;
+        return XA_NO_ERROR;
+        
+    case XA_MIXER_MAX_TRACK_NUMBER:
+        /* ...output buffer */
+        *(WORD32 *)pv_value = XA_MEMTYPE_OUTPUT;
+        return XA_NO_ERROR;
+        
+    case XA_MIXER_MAX_TRACK_NUMBER + 1:
+        /* ...scratch buffer */
+        *(WORD32 *)pv_value = XA_MEMTYPE_SCRATCH;
+        return XA_NO_ERROR;
+        
+    default:
+        /* ...invalid index */
+        return XF_CHK_ERR(0, XA_API_FATAL_INVALID_CMD_TYPE);
+    }
+}
+
+/* ...set memory pointer */
+static XA_ERRORCODE xa_mixer_set_mem_ptr(XAPcmMixer *d, WORD32 i_idx, pVOID pv_value)
+{
+    /* ...basic validity check */
+    XF_CHK_ERR(d && pv_value, XA_API_FATAL_INVALID_CMD_TYPE);
+
+    /* ...codec must be initialized */
+    XF_CHK_ERR(d->state & XA_MIXER_FLAG_POSTINIT_DONE, XA_API_FATAL_INVALID_CMD_TYPE);
+    
+    /* ...select memory buffer */
+    switch (i_idx)
+    {
+    case 0 ... XA_MIXER_MAX_TRACK_NUMBER - 1:
+        /* ...input buffers */
+        d->input[i_idx] = pv_value;
+        return XA_NO_ERROR;
+        
+    case XA_MIXER_MAX_TRACK_NUMBER:
+        /* ...output buffer */
+        d->output = pv_value;
+        return XA_NO_ERROR;
+        
+    case XA_MIXER_MAX_TRACK_NUMBER + 1:
+        /* ...scratch buffer */
+        d->scratch = pv_value;
+        return XA_NO_ERROR;
+        
+    default:
+        /* ...invalid index */
+        return XF_CHK_ERR(0, XA_API_FATAL_INVALID_CMD_TYPE);
+    }
+}
+
+/*******************************************************************************
+ * API command hooks
+ ******************************************************************************/
+
+static XA_ERRORCODE (* const xa_mixer_api[])(XAPcmMixer *, WORD32, pVOID) = 
+{
+    [XA_API_CMD_GET_API_SIZE]           = xa_mixer_get_api_size,
+
+    [XA_API_CMD_INIT]                   = xa_mixer_init, 
+    [XA_API_CMD_SET_CONFIG_PARAM]       = xa_mixer_set_config_param,
+    [XA_API_CMD_GET_CONFIG_PARAM]       = xa_mixer_get_config_param,
+
+    [XA_API_CMD_EXECUTE]                = xa_mixer_execute,
+    [XA_API_CMD_SET_INPUT_BYTES]        = xa_mixer_set_input_bytes,
+    [XA_API_CMD_GET_OUTPUT_BYTES]       = xa_mixer_get_output_bytes,
+    [XA_API_CMD_GET_CURIDX_INPUT_BUF]   = xa_mixer_get_curidx_input_buf,
+
+    [XA_API_CMD_GET_MEMTABS_SIZE]       = xa_mixer_get_memtabs_size,
+    [XA_API_CMD_SET_MEMTABS_PTR]        = xa_mixer_set_memtabs_ptr,
+    [XA_API_CMD_GET_N_MEMTABS]          = xa_mixer_get_n_memtabs,
+    [XA_API_CMD_GET_MEM_INFO_SIZE]      = xa_mixer_get_mem_info_size,
+    [XA_API_CMD_GET_MEM_INFO_ALIGNMENT] = xa_mixer_get_mem_info_alignment,
+    [XA_API_CMD_GET_MEM_INFO_TYPE]      = xa_mixer_get_mem_info_type,
+    [XA_API_CMD_SET_MEM_PTR]            = xa_mixer_set_mem_ptr,
+};
+
+/* ...total numer of commands supported */
+#define XA_MIXER_API_COMMANDS_NUM   (sizeof(xa_mixer_api) / sizeof(xa_mixer_api[0]))
+
+/*******************************************************************************
+ * API entry point
+ ******************************************************************************/
+
+XA_ERRORCODE xa_mixer(xa_codec_handle_t p_xa_module_obj, WORD32 i_cmd, WORD32 i_idx, pVOID pv_value)
+{
+    XAPcmMixer    *d = (XAPcmMixer *) p_xa_module_obj;
+
+    /* ...check if command index is valid */
+    XF_CHK_ERR(i_cmd < XA_MIXER_API_COMMANDS_NUM, XA_API_FATAL_INVALID_CMD);
+    
+    /* ...see if command is defined */
+    XF_CHK_ERR(xa_mixer_api[i_cmd], XA_API_FATAL_INVALID_CMD);
+    
+    /* ...execute requested command */
+    return xa_mixer_api[i_cmd](d, i_idx, pv_value);
+}
diff --git a/hifi/xaf/hifi-dpf/plugins/cadence/pcm_proc/xa-pcm-api.h b/hifi/xaf/hifi-dpf/plugins/cadence/pcm_proc/xa-pcm-api.h
new file mode 100644
index 0000000..cb14dad
--- /dev/null
+++ b/hifi/xaf/hifi-dpf/plugins/cadence/pcm_proc/xa-pcm-api.h
@@ -0,0 +1,145 @@
+/*******************************************************************************
+* Copyright (C) 2018 Cadence Design Systems, Inc.
+* 
+* Permission is hereby granted, free of charge, to any person obtaining
+* a copy of this software and associated documentation files (the
+* "Software"), to use this Software with Cadence processor cores only and 
+* not with any other processors and platforms, subject to
+* the following conditions:
+* 
+* The above copyright notice and this permission notice shall be included
+* in all copies or substantial portions of the Software.
+* 
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+******************************************************************************/
+
+/*******************************************************************************
+ * xa-pcm-api.h
+ *
+ * Generic PCM format converter API
+ *
+ ******************************************************************************/
+
+#ifndef __XA_PCM_API_H__
+#define __XA_PCM_API_H__
+
+/*******************************************************************************
+ * Includes
+ ******************************************************************************/
+
+#include "xa_type_def.h"
+#include "xa_error_standards.h"
+#include "xa_apicmd_standards.h"
+#include "xa_memory_standards.h"
+
+/*******************************************************************************
+ * Constants definitions
+ ******************************************************************************/
+
+/* ...codec-specific configuration parameters */
+enum xa_config_param_pcm {
+    XA_PCM_CONFIG_PARAM_SAMPLE_RATE         = 0,
+    XA_PCM_CONFIG_PARAM_IN_PCM_WIDTH        = 1,
+    XA_PCM_CONFIG_PARAM_IN_CHANNELS         = 2,
+    XA_PCM_CONFIG_PARAM_OUT_PCM_WIDTH       = 3,
+    XA_PCM_CONFIG_PARAM_OUT_CHANNELS        = 4,
+    XA_PCM_CONFIG_PARAM_CHANROUTING         = 5,
+    XA_PCM_CONFIG_PARAM_NUM                 = 6,
+};
+
+/* ...component identifier (informative) */
+#define XA_CODEC_PCM                  16
+
+/*******************************************************************************
+ * Class 0: API Errors
+ ******************************************************************************/
+
+#define XA_PCM_API_NONFATAL(e)          \
+    XA_ERROR_CODE(xa_severity_nonfatal, xa_class_api, XA_CODEC_PCM, (e))
+
+#define XA_PCM_API_FATAL(e)             \
+    XA_ERROR_CODE(xa_severity_fatal, xa_class_api, XA_CODEC_PCM, (e))
+
+enum xa_error_nonfatal_api_pcm {
+    XA_PCM_API_NONFATAL_MAX = XA_PCM_API_NONFATAL(0)
+};
+
+enum xa_error_fatal_api_pcm {
+    XA_PCM_API_FATAL_MAX = XA_PCM_API_FATAL(0)
+};
+
+/*******************************************************************************
+ * Class 1: Configuration Errors
+ ******************************************************************************/
+
+#define XA_PCM_CONFIG_NONFATAL(e)       \
+    XA_ERROR_CODE(xa_severity_nonfatal, xa_class_config, XA_CODEC_PCM, (e))
+
+#define XA_PCM_CONFIG_FATAL(e)          \
+    XA_ERROR_CODE(xa_severity_fatal, xa_class_config, XA_CODEC_PCM, (e))
+
+enum xa_error_nonfatal_config_pcm {
+    XA_PCM_CONFIG_NONFATAL_RANGE    = XA_PCM_CONFIG_NONFATAL(0),
+    XA_PCM_CONFIG_NONFATAL_STATE    = XA_PCM_CONFIG_NONFATAL(1),
+    XA_PCM_CONFIG_NONFATAL_MAX      = XA_PCM_CONFIG_NONFATAL(2)
+};
+
+enum xa_error_fatal_config_pcm {
+    XA_PCM_CONFIG_FATAL_RANGE       = XA_PCM_CONFIG_FATAL(0),
+    XA_PCM_CONFIG_FATAL_MAX         = XA_PCM_CONFIG_FATAL(1)
+};
+
+/*******************************************************************************
+ * Class 2: Execution Class Errors
+ ******************************************************************************/
+
+#define XA_PCM_EXEC_NONFATAL(e)         \
+    XA_ERROR_CODE(xa_severity_nonfatal, xa_class_execute, XA_CODEC_PCM, (e))
+
+#define XA_PCM_EXEC_FATAL(e)            \
+    XA_ERROR_CODE(xa_severity_fatal, xa_class_execute, XA_CODEC_PCM, (e))
+
+enum xa_error_nonfatal_execute_pcm {
+    XA_PCM_EXEC_NONFATAL_STATE      = XA_PCM_EXEC_NONFATAL(0),
+    XA_PCM_EXEC_NONFATAL_NO_DATA    = XA_PCM_EXEC_NONFATAL(1),
+    XA_PCM_EXEC_NONFATAL_INPUT      = XA_PCM_EXEC_NONFATAL(2),
+    XA_PCM_EXEC_NONFATAL_OUTPUT     = XA_PCM_EXEC_NONFATAL(3),
+    XA_PCM_EXEC_NONFATAL_MAX        = XA_PCM_EXEC_NONFATAL(4)
+};
+
+enum xa_error_fatal_execute_pcm {
+    XA_PCM_EXEC_FATAL_STATE         = XA_PCM_EXEC_FATAL(0),
+    XA_PCM_EXEC_FATAL_INPUT         = XA_PCM_EXEC_FATAL(1),
+    XA_PCM_EXEC_FATAL_OUTPUT        = XA_PCM_EXEC_FATAL(2),
+    XA_PCM_EXEC_FATAL_MAX           = XA_PCM_EXEC_FATAL(3)
+};
+
+/*******************************************************************************
+ * API function definition
+ ******************************************************************************/
+
+#if defined(USE_DLL) && defined(_WIN32)
+#define DLL_SHARED __declspec(dllimport)
+#elif defined (_WINDLL)
+#define DLL_SHARED __declspec(dllexport)
+#else
+#define DLL_SHARED
+#endif
+
+#if defined(__cplusplus)
+extern "C" {
+#endif  /* __cplusplus */
+DLL_SHARED xa_codec_func_t xa_pcm_codec;
+#if defined(__cplusplus)
+}
+#endif  /* __cplusplus */
+
+#endif /* __XA_PCM_API_H__ */
+
diff --git a/hifi/xaf/hifi-dpf/plugins/cadence/pcm_proc/xa-pcm.c b/hifi/xaf/hifi-dpf/plugins/cadence/pcm_proc/xa-pcm.c
new file mode 100644
index 0000000..cca97ef
--- /dev/null
+++ b/hifi/xaf/hifi-dpf/plugins/cadence/pcm_proc/xa-pcm.c
@@ -0,0 +1,841 @@
+/*******************************************************************************
+* Copyright (C) 2018 Cadence Design Systems, Inc.
+* 
+* Permission is hereby granted, free of charge, to any person obtaining
+* a copy of this software and associated documentation files (the
+* "Software"), to use this Software with Cadence processor cores only and 
+* not with any other processors and platforms, subject to
+* the following conditions:
+* 
+* The above copyright notice and this permission notice shall be included
+* in all copies or substantial portions of the Software.
+* 
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+******************************************************************************/
+
+/*******************************************************************************
+ * xa-pcm.c
+ *
+ * PCM format converter plugin
+ *
+ ******************************************************************************/
+
+#define MODULE_TAG                      PCM
+
+/*******************************************************************************
+ * Includes
+ ******************************************************************************/
+
+#include "xf-plugin.h"
+#include "xa-audio-decoder-api.h"
+#include "xa-pcm-api.h"
+
+#include <fcntl.h>
+
+/*******************************************************************************
+ * Tracing configuration
+ ******************************************************************************/
+
+TRACE_TAG(INIT, 1);
+TRACE_TAG(PROCESS, 0);
+
+/*******************************************************************************
+ * Local typedefs
+ ******************************************************************************/
+
+/* ...API structure */
+typedef struct XAPcmCodec
+{
+    /* ...codec state */
+    u32                 state;
+
+    /* ...sampling rate of input/output signal (informative only) */
+    u32                 sample_rate;
+
+    /* ...number of input/output channels */
+    u8                  in_channels, out_channels;
+    
+    /* ...PCM sample width of input/output streams */
+    u8                  in_pcm_width, out_pcm_width;
+
+    /* ...input/output stride size */
+    u8                  in_stride, out_stride;
+    
+    /* ...channel routing map between input and output */
+    u32                 chan_routing;
+
+    /* ...data processing hook */
+    XA_ERRORCODE      (*process)(struct XAPcmCodec *);
+
+    /* ...number of samples in input/output buffers */
+    u32                 insize, outsize;
+
+    /* ...input/output memory indices */
+    u32                 input_idx, output_idx;
+    
+    /* ...input/output buffers passed from/to caller */
+    void               *input, *output;
+
+    /* ...number of input bytes consumed/produced */
+    u32                 consumed, produced;
+
+    /* ...debug - file handles */
+    int                 f_input, f_output;
+    
+}   XAPcmCodec;
+
+/*******************************************************************************
+ * Local execution flags
+ ******************************************************************************/
+
+#define XA_PCM_FLAG_PREINIT_DONE        (1 << 0)
+#define XA_PCM_FLAG_POSTINIT_DONE       (1 << 1)
+#define XA_PCM_FLAG_RUNNING             (1 << 2)
+#define XA_PCM_FLAG_EOS                 (1 << 3)
+#define XA_PCM_FLAG_COMPLETE            (1 << 4)
+
+/*******************************************************************************
+ * Local constants definitions
+ ******************************************************************************/
+
+/* ...process at most 1024 samples per call */
+#define XA_PCM_MAX_SAMPLES              1024
+
+/*******************************************************************************
+ * Internal processing functions
+ ******************************************************************************/
+
+/* ...identity translation of PCM16/24 */
+static XA_ERRORCODE xa_pcm_do_execute_copy(XAPcmCodec *d)
+{
+    u32     n = d->insize;
+    u8      k = d->in_channels;
+    u32     length = n * k * (d->in_pcm_width == 16 ? 2 : 4);
+    s16    *input = d->input, *output = d->output;
+
+    TRACE(PROCESS, _b("Copy PCM%d %p to %p (%u samples)"), d->in_pcm_width, input, output, n);
+    
+    /* ...check if we have all data setup */
+    XF_CHK_ERR(input && n && output, XA_PCM_EXEC_FATAL_STATE);
+    
+    /* ...copy the samples without any processing */
+    memcpy(output, input, length);
+
+    /* ...set number of consumed/produced bytes */
+    d->consumed = length;
+    d->produced = length;
+
+    /* ...reset input buffer length */
+    d->insize = 0;
+
+    /* ...copy input to output */
+    return XA_NO_ERROR;
+}
+
+/* ...data processing for PCM16, channel mapping case */
+static XA_ERRORCODE xa_pcm_do_execute_pcm16_chmap(XAPcmCodec *d)
+{
+    u32     n = d->insize, i;
+    u8      k = d->in_channels, j;
+    u32     chmap = d->chan_routing, map;
+    s16    *input = d->input, *output = d->output;
+    u32     length = n * k * (d->in_pcm_width == 16 ? 2 : 4);
+
+    TRACE(PROCESS, _b("Map PCM16 %p to %p (%u samples, map: %X)"), input, output, n, chmap);    
+    
+    /* ...check if we have all data setup */
+    XF_CHK_ERR(input && n && output, XA_PCM_EXEC_FATAL_STATE);
+
+#if 0
+    /* ...convert individual samples (that function could be CPU-optimized - tbd) */
+    for (i = 0; i < n; i++, input += k)
+    {
+        /* ...process individual channels in a sample */
+        for (j = 0, map = chmap; j < k; j++, map >>= 4)
+        {
+            u8      m = map & 0xF;
+            
+            /* ...fill output channel (zero unused channel) */
+            *output++ = (m < 8 ? input[m] : 0);
+        }
+    }
+
+    /* ...set number of consumed/produced bytes */
+    d->consumed = (u32)((u8 *)input - (u8 *)d->input);
+    d->produced = (u32)((u8 *)output - (u8 *)d->output);
+#else
+    memcpy(output, input, length);
+    /* ...set number of consumed/produced bytes */
+    d->consumed = length;
+    d->produced = length;
+#endif
+    /* ...reset input buffer length */
+    d->insize = 0;
+
+    /* ...copy input to output */
+    return XA_NO_ERROR;
+}
+
+/* ...data processing for PCM24/PCM32, channel mapping case */
+static XA_ERRORCODE xa_pcm_do_execute_pcm24_chmap(XAPcmCodec *d)
+{
+    u32     n = d->insize, i;
+    u8      k = d->in_channels, j;
+    u32     chmap = d->chan_routing, map;
+    s32    *input = d->input, *output = d->output;
+
+    TRACE(PROCESS, _b("Map PCM24 %p to %p (%u samples, map: %X)"), input, output, n, chmap);
+
+    /* ...check if we have all data setup */
+    XF_CHK_ERR(input && n && output, XA_PCM_EXEC_FATAL_STATE);
+    
+    /* ...convert individual samples (that function could be CPU-optimized - tbd) */
+    for (i = 0; i < n; i++, input += k)
+    {
+        /* ...process individual channels in a sample */
+        for (j = 0, map = chmap; j < k; j++, map >>= 4)
+        {
+            u8      m = map & 0xF;
+            
+            /* ...fill output channel (zero unused channel) */
+            *output++ = (m < 8 ? input[m] : 0);
+        }
+    }
+
+    /* ...set number of consumed/produced bytes */
+    d->consumed = (u32)((u8 *)input - (u8 *)d->input);
+    d->produced = (u32)((u8 *)output - (u8 *)d->output);
+
+    /* ...reset input buffer length */
+    d->insize = 0;
+
+    /* ...copy input to output */
+    return XA_NO_ERROR;
+}
+
+/* ...convert multichannel 24-bit PCM to 16-bit PCM with channel mapping */
+static XA_ERRORCODE xa_pcm_do_execute_pcm24_to_pcm16(XAPcmCodec *d)
+{
+    u32     n = d->insize, i;
+    u8      k = d->in_channels, j;
+    u32     chmap = d->chan_routing, map;
+    s32    *input = d->input;
+    s16    *output = d->output;
+
+    TRACE(PROCESS, _b("Convert PCM24 %p to PCM16 %p (%u samples, map: %X)"), input, output, n, chmap);
+    
+    /* ...check if we have all data setup */
+    XF_CHK_ERR(input && n && output, XA_PCM_EXEC_FATAL_STATE);
+
+    /* ...convert individual samples (that function could be CPU-optimized - tbd) */
+    for (i = 0; i < n; i++, input += k)
+    {
+        /* ...process individual channels in a sample */
+        for (j = 0, map = chmap; j < k; j++, map >>= 4)
+        {
+            u8      m = map & 0xF;
+
+            /* ...convert and zero out unused channels */
+            *output++ = (m < 8 ? input[m] >> 16 : 0);
+        }
+    }
+
+    /* ...set number of consumed/produced bytes */
+    d->consumed = (u32)((u8 *)input - (u8 *)d->input);
+    d->produced = (u32)((u8 *)output - (u8 *)d->output);
+
+    /* ...dump output data */
+    //BUG(write(d->f_input, d->input, d->consumed) != d->consumed, _x("%m"));
+    //BUG(write(d->f_output, d->output, d->produced) != d->produced, _x("%m"));
+    
+    /* ...reset input buffer length (tbd - need that?) */
+    d->insize = 0;
+    
+    /* ...copy input to output */
+    return XA_NO_ERROR;    
+}
+
+/* ...convert multichannel 16-bit PCM to 24-bit PCM with channel mapping */
+static XA_ERRORCODE xa_pcm_do_execute_pcm16_to_pcm24(XAPcmCodec *d)
+{
+    u32     n = d->insize, i;
+    u8      k = d->in_channels, j;
+    u32     chmap = d->chan_routing, map;
+    s16    *input = d->input;
+    s32    *output = d->output;
+
+    TRACE(PROCESS, _b("Convert PCM16 %p to PCM24 %p (%u samples, map: %X)"), input, output, n, chmap);
+    
+    /* ...check if we have all data setup */
+    XF_CHK_ERR(input && n && output, XA_PCM_EXEC_FATAL_STATE);
+
+    /* ...convert individual samples (that function could be CPU-optimized - tbd) */
+    for (i = 0; i < n; i++, input += k)
+    {
+        /* ...process individual channels in a sample */
+        for (j = 0, map = chmap; j < k; j++, map >>= 4)
+        {
+            u8      m = map & 0xF;
+
+            /* ...convert and zero out unused channels */
+            *output++ = (m < 8 ? input[m] << 16 : 0);
+        }
+    }
+    
+    /* ...set number of consumed/produced bytes */
+    d->consumed = (u32)((u8 *)input - (u8 *)d->input);
+    d->produced = (u32)((u8 *)output - (u8 *)d->output);
+    
+    /* ...reset input buffer length (tbd - need that?) */
+    d->insize = 0;
+    
+    /* ...copy input to output */
+    return XA_NO_ERROR;    
+}
+
+/* ...determine if we need to do a channel routing */
+static inline int xa_pcm_is_identity_mapping(u32 chmap, u8 k)
+{
+    u8      j;
+    
+    for (j = 0; j < k; j++, chmap >>= 4)
+        if ((chmap & 0xF) != j)
+            return 0;
+    
+    return 1;
+}
+
+/* ...runtime initialization */
+static inline XA_ERRORCODE xa_pcm_do_runtime_init(XAPcmCodec *d)
+{
+    u8      in_width = d->in_pcm_width, out_width = d->out_pcm_width;
+    u8      in_ch = d->in_channels, out_ch = d->out_channels;
+    u32     chmap = d->chan_routing;
+    
+    /* ...check for supported processing schemes */
+    if (in_width == out_width)
+    {
+        /* ...check if we need to do a channel mapping */
+        if (in_ch != out_ch || !xa_pcm_is_identity_mapping(chmap, in_ch))
+        {
+            /* ...mapping is needed */
+            d->process = (in_width == 16 ? xa_pcm_do_execute_pcm16_chmap : xa_pcm_do_execute_pcm24_chmap);
+        }
+        else
+        {
+            /* ...setup identity translation */
+            d->process = xa_pcm_do_execute_copy;
+        }
+    }
+    else
+    {
+        /* ...samples converion is required */
+        d->process = (in_width == 16 ? xa_pcm_do_execute_pcm16_to_pcm24 : xa_pcm_do_execute_pcm24_to_pcm16);
+    }
+    
+    /* ...mark the runtime initialization is completed */
+    d->state = XA_PCM_FLAG_PREINIT_DONE | XA_PCM_FLAG_POSTINIT_DONE | XA_PCM_FLAG_RUNNING;
+
+    TRACE(INIT, _b("PCM format converter initialized: PCM%u -> PCM%u, ich=%u, och=%u, map=%X"), in_width, out_width, in_ch, out_ch, chmap);
+
+    return XA_NO_ERROR;
+}
+
+/*******************************************************************************
+ * Commands processing
+ ******************************************************************************/
+
+/* ...standard codec initialization routine */
+static XA_ERRORCODE xa_pcm_get_api_size(XAPcmCodec *d, WORD32 i_idx, pVOID pv_value)
+{
+    /* ...return API structure size */
+    *(WORD32 *)pv_value = sizeof(*d);
+    
+    return XA_NO_ERROR;
+}
+
+/* ...standard codec initialization routine */
+static XA_ERRORCODE xa_pcm_init(XAPcmCodec *d, WORD32 i_idx, pVOID pv_value)
+{
+    /* ...validity check */
+    XF_CHK_ERR(d, XA_API_FATAL_INVALID_CMD_TYPE);
+
+    /* ...process particular initialization type */
+    switch (i_idx)
+    {
+    case XA_CMD_TYPE_INIT_API_PRE_CONFIG_PARAMS:
+    {
+        /* ...pre-configuration initialization; reset internal data */
+        memset(d, 0, sizeof(*d));
+
+        /* ...set default parameters */
+        d->in_pcm_width = d->out_pcm_width = 16;
+        d->in_channels = d->out_channels = 2;
+        d->chan_routing = (0 << 0) | (1 << 1);
+        d->sample_rate = 48000;
+        
+        /* ...open debug files */
+        //BUG((d->f_input = open("pcm-in.dat", O_WRONLY | O_CREAT, 0664)) < 0, _x("%m"));
+        //BUG((d->f_output = open("pcm-out.dat", O_WRONLY | O_CREAT, 0664)) < 0, _x("%m"));
+
+        /* ...mark pre-initialization is done */
+        d->state = XA_PCM_FLAG_PREINIT_DONE;
+        
+        return XA_NO_ERROR;
+    }
+    
+    case XA_CMD_TYPE_INIT_API_POST_CONFIG_PARAMS:
+    {
+        /* ...post-configuration initialization (all parameters are set) */
+        XF_CHK_ERR(d->state & XA_PCM_FLAG_PREINIT_DONE, XA_API_FATAL_INVALID_CMD_TYPE);
+
+        /* ...calculate input sample stride size */
+        d->in_stride = d->in_channels * (d->in_pcm_width == 16 ? 2 : 4);
+        d->out_stride = d->out_channels * (d->out_pcm_width == 16 ? 2 : 4);
+
+        /* ...mark post-initialization is complete */
+        d->state |= XA_PCM_FLAG_POSTINIT_DONE;
+        
+        return XA_NO_ERROR;
+    }
+
+    case XA_CMD_TYPE_INIT_PROCESS:
+    {
+        /* ...run-time initialization process; make sure post-init is complete */
+        XF_CHK_ERR(d->state & XA_PCM_FLAG_POSTINIT_DONE, XA_API_FATAL_INVALID_CMD_TYPE);
+
+        /* ...initialize runtime for specified transformation function */
+        return xa_pcm_do_runtime_init(d);
+    }
+    
+    case XA_CMD_TYPE_INIT_DONE_QUERY:
+    {
+        /* ...check for runtime initialization completion; maske usre post-init is complete */
+        XF_CHK_ERR(d->state & XA_PCM_FLAG_POSTINIT_DONE, XA_API_FATAL_INVALID_CMD_TYPE);
+
+        /* ...put current status */
+        *(WORD32 *)pv_value = (d->state & XA_PCM_FLAG_RUNNING ? 1 : 0);
+
+        return XA_NO_ERROR;
+    }
+
+    default:
+        /* ...unrecognized command */
+        return XF_CHK_ERR(0, XA_API_FATAL_INVALID_CMD_TYPE);
+    }
+}
+
+/* ...set configuration parameter */
+static XA_ERRORCODE xa_pcm_set_config_param(XAPcmCodec *d, WORD32 i_idx, pVOID pv_value)
+{
+    WORD32      i_value;
+    
+    /* ...validity check */
+    XF_CHK_ERR(d && pv_value, XA_API_FATAL_INVALID_CMD_TYPE);
+
+    /* ...configuration is allowed only in PRE-CONFIG state */
+    XF_CHK_ERR(d->state == XA_PCM_FLAG_PREINIT_DONE, XA_PCM_CONFIG_NONFATAL_STATE);
+
+    /* ...get integer parameter value */
+    i_value = *(WORD32 *)pv_value;
+
+    /* ...process individual configuration parameter */
+    switch (i_idx)
+    {
+    case XA_CODEC_CONFIG_PARAM_SAMPLE_RATE:
+    case XA_PCM_CONFIG_PARAM_SAMPLE_RATE:
+        /* ...accept any sampling rate */
+        d->sample_rate = (u32)i_value;
+        return XA_NO_ERROR;
+
+    case XA_PCM_CONFIG_PARAM_IN_PCM_WIDTH:
+        /* ...return input sample bit-width */
+        XF_CHK_ERR(i_value == 16 || i_value == 24, XA_PCM_CONFIG_NONFATAL_RANGE);
+        d->in_pcm_width = (u8)i_value;
+        return XA_NO_ERROR;
+
+    case XA_PCM_CONFIG_PARAM_IN_CHANNELS:
+        /* ...support at most 8-channels stream */
+        XF_CHK_ERR(i_value > 0 && i_value <= 8, XA_PCM_CONFIG_NONFATAL_RANGE);
+        d->in_channels = (u8)i_value;
+        return XA_NO_ERROR;
+        
+    case XA_CODEC_CONFIG_PARAM_PCM_WIDTH:
+    case XA_PCM_CONFIG_PARAM_OUT_PCM_WIDTH:
+        /* ...we only support PCM16 and PCM24 */
+        XF_CHK_ERR(i_value == 16 || i_value == 24, XA_PCM_CONFIG_NONFATAL_RANGE);
+        d->out_pcm_width = (u8)i_value;
+        return XA_NO_ERROR;
+
+    case XA_CODEC_CONFIG_PARAM_CHANNELS:
+    case XA_PCM_CONFIG_PARAM_OUT_CHANNELS:
+        /* ...support at most 8-channels stream */
+        XF_CHK_ERR(i_value > 0 && i_value <= 8, XA_API_FATAL_INVALID_CMD_TYPE);
+        d->out_channels = (u8)i_value;
+        return XA_NO_ERROR;
+
+    case XA_PCM_CONFIG_PARAM_CHANROUTING:
+        /* ...accept any channel routing mask */
+        d->chan_routing = (u32)i_value;
+        return XA_NO_ERROR;
+
+    default:
+        /* ...unrecognized parameter */
+        return XF_CHK_ERR(0, XA_API_FATAL_INVALID_CMD_TYPE);
+    }
+}
+
+/* ...retrieve configuration parameter */
+static XA_ERRORCODE xa_pcm_get_config_param(XAPcmCodec *d, WORD32 i_idx, pVOID pv_value)
+{
+    /* ...validity check */
+    XF_CHK_ERR(d && pv_value, XA_API_FATAL_INVALID_CMD_TYPE);
+
+    /* ...make sure pre-configuration is completed */
+    XF_CHK_ERR(d->state & XA_PCM_FLAG_PREINIT_DONE, XA_PCM_CONFIG_NONFATAL_STATE);
+
+    /* ...process individual parameter */
+    switch (i_idx)
+    {
+    case XA_CODEC_CONFIG_PARAM_SAMPLE_RATE:
+    case XA_PCM_CONFIG_PARAM_SAMPLE_RATE:
+        /* ...return output sampling frequency */
+        *(WORD32 *)pv_value = d->sample_rate;
+        return XA_NO_ERROR;
+
+    case XA_PCM_CONFIG_PARAM_IN_PCM_WIDTH:
+        /* ...return input sample bit-width */
+        *(WORD32 *)pv_value = d->in_pcm_width;
+        return XA_NO_ERROR;
+
+    case XA_PCM_CONFIG_PARAM_IN_CHANNELS:
+        /* ...return number of input channels */
+        *(WORD32 *)pv_value = d->in_channels;
+        return XA_NO_ERROR;
+
+    case XA_CODEC_CONFIG_PARAM_PCM_WIDTH:
+    case XA_PCM_CONFIG_PARAM_OUT_PCM_WIDTH:
+        /* ...return output sample bit-width */
+        *(WORD32 *)pv_value = d->out_pcm_width;
+        return XA_NO_ERROR;
+
+    case XA_CODEC_CONFIG_PARAM_CHANNELS:
+    case XA_PCM_CONFIG_PARAM_OUT_CHANNELS:
+        /* ...return number of output channels */
+        *(WORD32 *)pv_value = d->out_channels;
+        return XA_NO_ERROR;
+
+    case XA_PCM_CONFIG_PARAM_CHANROUTING:
+        /* ...return current channel routing mask */
+        *(WORD32 *)pv_value = d->chan_routing;
+        return XA_NO_ERROR;
+
+    default:
+        /* ...unrecognized parameter */
+        return XF_CHK_ERR(0, XA_API_FATAL_INVALID_CMD_TYPE);
+    }
+}
+
+/* ...execution command */
+static XA_ERRORCODE xa_pcm_execute(XAPcmCodec *d, WORD32 i_idx, pVOID pv_value)
+{
+    /* ...basic validity check */
+    XF_CHK_ERR(d, XA_API_FATAL_INVALID_CMD_TYPE);
+
+   /* ...codec must be in running state */
+    XF_CHK_ERR(d->state & XA_PCM_FLAG_RUNNING, XA_API_FATAL_INVALID_CMD_TYPE);
+     
+    /* ...process individual command type */
+    switch (i_idx)
+    {
+    case XA_CMD_TYPE_DO_EXECUTE:
+        /* ...do data processing (tbd - result code is bad) */
+        if (d->insize != 0)
+        {
+            XF_CHK_ERR(!XA_ERROR_SEVERITY(d->process(d)), XA_PCM_EXEC_FATAL_STATE);
+        }
+
+        /* ...process end-of-stream condition */
+        (d->state & XA_PCM_FLAG_EOS ? d->state ^= XA_PCM_FLAG_EOS | XA_PCM_FLAG_COMPLETE : 0);
+        
+        return XA_NO_ERROR;
+        
+    case XA_CMD_TYPE_DONE_QUERY:
+        /* ...check if processing is complete */
+        XF_CHK_ERR(pv_value, XA_API_FATAL_INVALID_CMD_TYPE);
+
+        /* ...return completion status */
+        *(WORD32 *)pv_value = (d->state & XA_PCM_FLAG_COMPLETE ? 1 : 0);
+
+        return XA_NO_ERROR;
+        
+    case XA_CMD_TYPE_DO_RUNTIME_INIT:
+        /* ...reset codec operation */
+        return xa_pcm_do_runtime_init(d);
+        
+    default:
+        /* ...unrecognized command */
+        return XF_CHK_ERR(0, XA_API_FATAL_INVALID_CMD_TYPE);
+    }
+}
+
+/* ...set number of input bytes */
+static XA_ERRORCODE xa_pcm_set_input_bytes(XAPcmCodec *d, WORD32 i_idx, pVOID pv_value)
+{
+    u32     in_stride = d->in_stride;
+    u32     insize;
+    
+    /* ...validity check */
+    XF_CHK_ERR(d && pv_value, XA_API_FATAL_INVALID_CMD_TYPE);
+
+    /* ...track index must be valid */
+    XF_CHK_ERR(i_idx == 0, XA_API_FATAL_INVALID_CMD_TYPE);
+    
+    /* ...component must be initialized */
+    XF_CHK_ERR(d->state & XA_PCM_FLAG_POSTINIT_DONE, XA_API_FATAL_INVALID_CMD_TYPE);
+    
+    /* ...input buffer must exist */
+    XF_CHK_ERR(d->input, XA_API_FATAL_INVALID_CMD_TYPE);
+
+    /* ...convert bytes into samples (don't like division, but still...) */
+    insize = *(WORD32 *)pv_value / in_stride;
+
+    /* ...make sure we have integral amount of samples */
+    XF_CHK_ERR(*(WORD32 *)pv_value == insize * in_stride, XA_API_FATAL_INVALID_CMD_TYPE);
+
+    /* ...limit input buffer size to maximal value*/
+    d->insize = (insize > XA_PCM_MAX_SAMPLES ? XA_PCM_MAX_SAMPLES : insize);
+ 
+    return XA_NO_ERROR;
+}
+
+/* ...get number of output bytes produced */
+static XA_ERRORCODE xa_pcm_get_output_bytes(XAPcmCodec *d, WORD32 i_idx, pVOID pv_value)
+{
+    /* ...validity check */
+    XF_CHK_ERR(d && pv_value, XA_API_FATAL_INVALID_CMD_TYPE);
+
+    /* ...buffer index must be valid */
+    XF_CHK_ERR(i_idx == 1, XA_API_FATAL_INVALID_CMD_TYPE);
+
+    /* ...component must be initialized */
+    XF_CHK_ERR(d->state & XA_PCM_FLAG_POSTINIT_DONE, XA_API_FATAL_INVALID_CMD_TYPE);
+    
+    /* ...output buffer must exist */
+    XF_CHK_ERR(d->output, XA_API_FATAL_INVALID_CMD_TYPE);
+
+    /* ...return number of produced bytes (and reset instantly? - tbd) */
+    *(WORD32 *)pv_value = d->produced;
+
+    return XA_NO_ERROR;
+}
+
+/* ...get number of consumed bytes */
+static XA_ERRORCODE xa_pcm_get_curidx_input_buf(XAPcmCodec *d, WORD32 i_idx, pVOID pv_value)
+{
+    /* ...validity check */
+    XF_CHK_ERR(d && pv_value, XA_API_FATAL_INVALID_CMD_TYPE);
+
+    /* ...index must be valid */
+    XF_CHK_ERR(i_idx == 0, XA_API_FATAL_INVALID_CMD_TYPE);
+    
+    /* ...input buffer must exist */
+    XF_CHK_ERR(d->input, XA_PCM_EXEC_NONFATAL_INPUT);
+
+    /* ...return number of bytes consumed */
+    *(WORD32 *)pv_value = d->consumed;
+
+    return XA_NO_ERROR;
+}
+
+/* ...end-of-stream processing */
+static XA_ERRORCODE xa_pcm_input_over(XAPcmCodec *d, WORD32 i_idx, pVOID pv_value)
+{
+    /* ...validity check */
+    XF_CHK_ERR(d, XA_API_FATAL_INVALID_CMD_TYPE);
+
+    /* ...put end-of-stream flag */
+    d->state |= XA_PCM_FLAG_EOS;
+    
+    TRACE(PROCESS, _b("Input-over-condition signalled"));
+
+    return XA_NO_ERROR;
+}
+
+/* ..get total amount of data for memory tables */
+static XA_ERRORCODE xa_pcm_get_memtabs_size(XAPcmCodec *d, WORD32 i_idx, pVOID pv_value)
+{
+    /* ...basic validity checks */
+    XF_CHK_ERR(d && pv_value, XA_API_FATAL_INVALID_CMD_TYPE);
+
+    /* ...check mixer is pre-initialized */
+    XF_CHK_ERR(d->state & XA_PCM_FLAG_PREINIT_DONE, XA_API_FATAL_INVALID_CMD_TYPE);
+    
+    /* ...we have all our tables inside API structure */
+    *(WORD32 *)pv_value = 0;
+    
+    return XA_NO_ERROR;
+}
+
+/* ...return total amount of memory buffers */
+static XA_ERRORCODE xa_pcm_get_n_memtabs(XAPcmCodec *d, WORD32 i_idx, pVOID pv_value)
+{
+    /* ...basic validity checks */
+    XF_CHK_ERR(d && pv_value, XA_API_FATAL_INVALID_CMD_TYPE);
+    
+    /* ...we have 1 input buffer and 1 output buffer */
+    *(WORD32 *)pv_value = 1 + 1;
+    
+    return XA_NO_ERROR;
+}
+
+/* ...return memory type data */
+static XA_ERRORCODE xa_pcm_get_mem_info_type(XAPcmCodec *d, WORD32 i_idx, pVOID pv_value)
+{
+    /* ...basic validity check */
+    XF_CHK_ERR(d && pv_value, XA_API_FATAL_INVALID_CMD_TYPE);
+
+    /* ...codec must be in post-init state */
+    XF_CHK_ERR(d->state & XA_PCM_FLAG_POSTINIT_DONE, XA_API_FATAL_INVALID_CMD_TYPE);
+    
+    /* ...check buffer type */
+    switch (i_idx)
+    {
+    case 0:
+        *(WORD32 *)pv_value = XA_MEMTYPE_INPUT;
+        return XA_NO_ERROR;
+
+    case 1:
+        *(WORD32 *)pv_value = XA_MEMTYPE_OUTPUT;
+        return XA_NO_ERROR;
+        
+    default:
+        return XF_CHK_ERR(0, XA_API_FATAL_INVALID_CMD_TYPE);
+    }
+}
+
+/* ...return memory buffer size */
+static XA_ERRORCODE xa_pcm_get_mem_info_size(XAPcmCodec *d, WORD32 i_idx, pVOID pv_value)
+{
+    /* ...basic validity check */
+    XF_CHK_ERR(d && pv_value, XA_API_FATAL_INVALID_CMD_TYPE);
+
+    /* ...codec must be in post-init state */
+    XF_CHK_ERR(d->state & XA_PCM_FLAG_POSTINIT_DONE, XA_API_FATAL_INVALID_CMD_TYPE);    
+    
+    /* ...determine particular buffer */
+    switch (i_idx)
+    {
+    case 0:
+        /* ...input buffer size can be any */
+        *(WORD32 *)pv_value = 0;
+        return XA_NO_ERROR;
+        
+    case 1:
+        /* ...output buffer size is dependent on stride */
+        *(WORD32 *)pv_value = XA_PCM_MAX_SAMPLES * d->out_stride;
+        return XA_NO_ERROR;
+
+    default:
+        /* ...invalid buffer index */
+        return XF_CHK_ERR(0, XA_API_FATAL_INVALID_CMD_TYPE);
+    }
+}
+
+/* ...return memory alignment data */
+static XA_ERRORCODE xa_pcm_get_mem_info_alignment(XAPcmCodec *d, WORD32 i_idx, pVOID pv_value)
+{
+    /* ...basic validity check */
+    XF_CHK_ERR(d && pv_value, XA_API_FATAL_INVALID_CMD_TYPE);
+
+    /* ...codec must be in post-initialization state */
+    XF_CHK_ERR(d->state & XA_PCM_FLAG_POSTINIT_DONE, XA_API_FATAL_INVALID_CMD_TYPE);
+
+    /* ...all buffers are 4-bytes aligned */
+    *(WORD32 *)pv_value = 4;
+        
+    return XA_NO_ERROR;
+}
+
+/* ...set memory pointer */
+static XA_ERRORCODE xa_pcm_set_mem_ptr(XAPcmCodec *d, WORD32 i_idx, pVOID pv_value)
+{
+    /* ...basic validity check */
+    XF_CHK_ERR(d, XA_API_FATAL_INVALID_CMD_TYPE);
+    XF_CHK_ERR(pv_value, XA_API_FATAL_INVALID_CMD_TYPE);
+
+    /* ...codec must be in post-initialized state */
+    XF_CHK_ERR(d->state & XA_PCM_FLAG_POSTINIT_DONE, XA_API_FATAL_INVALID_CMD_TYPE);
+    
+    /* ...select memory buffer */
+    switch (i_idx)
+    {
+    case 0:
+        /* ...input buffer */
+        d->input = pv_value;
+        return XA_NO_ERROR;
+        
+    case 1:
+        /* ...output buffer */
+        d->output = pv_value;
+        return XA_NO_ERROR;
+        
+    default:
+        /* ...invalid index */
+        return XF_CHK_ERR(0, XA_API_FATAL_INVALID_CMD_TYPE);
+    }
+}
+
+/*******************************************************************************
+ * API command hooks
+ ******************************************************************************/
+
+static XA_ERRORCODE (* const xa_pcm_api[])(XAPcmCodec *, WORD32, pVOID) = 
+{
+    [XA_API_CMD_GET_API_SIZE]           = xa_pcm_get_api_size,
+
+    [XA_API_CMD_INIT]                   = xa_pcm_init, 
+    [XA_API_CMD_SET_CONFIG_PARAM]       = xa_pcm_set_config_param,
+    [XA_API_CMD_GET_CONFIG_PARAM]       = xa_pcm_get_config_param,
+
+    [XA_API_CMD_EXECUTE]                = xa_pcm_execute,
+    [XA_API_CMD_SET_INPUT_BYTES]        = xa_pcm_set_input_bytes,
+    [XA_API_CMD_GET_OUTPUT_BYTES]       = xa_pcm_get_output_bytes,
+    [XA_API_CMD_GET_CURIDX_INPUT_BUF]   = xa_pcm_get_curidx_input_buf,
+    [XA_API_CMD_INPUT_OVER]             = xa_pcm_input_over,
+
+    [XA_API_CMD_GET_MEMTABS_SIZE]       = xa_pcm_get_memtabs_size,
+    [XA_API_CMD_GET_N_MEMTABS]          = xa_pcm_get_n_memtabs,
+    [XA_API_CMD_GET_MEM_INFO_TYPE]      = xa_pcm_get_mem_info_type,
+    [XA_API_CMD_GET_MEM_INFO_SIZE]      = xa_pcm_get_mem_info_size,
+    [XA_API_CMD_GET_MEM_INFO_ALIGNMENT] = xa_pcm_get_mem_info_alignment,
+    [XA_API_CMD_SET_MEM_PTR]            = xa_pcm_set_mem_ptr,
+};
+
+/* ...total numer of commands supported */
+#define XA_PCM_API_COMMANDS_NUM     (sizeof(xa_pcm_api) / sizeof(xa_pcm_api[0]))
+
+/*******************************************************************************
+ * API entry point
+ ******************************************************************************/
+
+XA_ERRORCODE xa_pcm_codec(xa_codec_handle_t p_xa_module_obj, WORD32 i_cmd, WORD32 i_idx, pVOID pv_value)
+{
+    XAPcmCodec *d = (XAPcmCodec *) p_xa_module_obj;
+
+    /* ...check if command index is valid */
+    XF_CHK_ERR(i_cmd < XA_PCM_API_COMMANDS_NUM, XA_API_FATAL_INVALID_CMD);
+    
+    /* ...see if command is defined */
+    XF_CHK_ERR(xa_pcm_api[i_cmd], XA_API_FATAL_INVALID_CMD);
+    
+    /* ...execute requested command */
+    return xa_pcm_api[i_cmd](d, i_idx, pv_value);
+}
diff --git a/hifi/xaf/hifi-dpf/plugins/cadence/vorbis_dec/lib/hifi3/xa_vorbis_dec.a b/hifi/xaf/hifi-dpf/plugins/cadence/vorbis_dec/lib/hifi3/xa_vorbis_dec.a
new file mode 100644
index 0000000..cb28445
--- /dev/null
+++ b/hifi/xaf/hifi-dpf/plugins/cadence/vorbis_dec/lib/hifi3/xa_vorbis_dec.a
Binary files differ
diff --git a/hifi/xaf/hifi-dpf/plugins/cadence/vorbis_dec/xa-vorbis-decoder.c b/hifi/xaf/hifi-dpf/plugins/cadence/vorbis_dec/xa-vorbis-decoder.c
new file mode 100644
index 0000000..43220ef
--- /dev/null
+++ b/hifi/xaf/hifi-dpf/plugins/cadence/vorbis_dec/xa-vorbis-decoder.c
@@ -0,0 +1,84 @@
+/*******************************************************************************
+* Copyright (C) 2018 Cadence Design Systems, Inc.
+* 
+* Permission is hereby granted, free of charge, to any person obtaining
+* a copy of this software and associated documentation files (the
+* "Software"), to use this Software with Cadence processor cores only and 
+* not with any other processors and platforms, subject to
+* the following conditions:
+* 
+* The above copyright notice and this permission notice shall be included
+* in all copies or substantial portions of the Software.
+* 
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+******************************************************************************/
+
+/*******************************************************************************
+ * xa-vorbis-decoder.c
+ *
+ * VORBIS decoder plugin - thin wrapper around VORBISDEC library
+ *
+ ******************************************************************************/
+
+#define MODULE_TAG                      VORBISDEC
+
+/*******************************************************************************
+ * Includes
+ ******************************************************************************/
+
+#include "xf-plugin.h"
+#include "audio/xa-audio-decoder-api.h"
+#include "xa_vorbis_dec_api.h"
+
+/*******************************************************************************
+ * Override GET-CONFIG-PARAM function
+ ******************************************************************************/
+
+static inline XA_ERRORCODE xa_vorbis_get_config_param(xa_codec_handle_t handle, WORD32 i_idx, pVOID pv_value)
+{
+    /* ...translate "standard" parameter index into internal value */
+    switch (i_idx)
+    {
+    case XA_CODEC_CONFIG_PARAM_CHANNELS:
+        /* ...return number of output channels */
+        i_idx = XA_VORBISDEC_CONFIG_PARAM_NUM_CHANNELS;
+        break;
+        
+    case XA_CODEC_CONFIG_PARAM_SAMPLE_RATE:
+        /* ...return output sampling frequency */
+        i_idx = XA_VORBISDEC_CONFIG_PARAM_SAMP_FREQ;
+        break;
+        
+    case XA_CODEC_CONFIG_PARAM_PCM_WIDTH:
+        /* ...return sample bit-width */
+        i_idx = XA_VORBISDEC_CONFIG_PARAM_PCM_WDSZ;
+        break;
+    }
+    
+    /* ...pass to library */
+    return xa_vorbis_dec(handle, XA_API_CMD_GET_CONFIG_PARAM, i_idx, pv_value);       
+}
+
+/*******************************************************************************
+ * API entry point
+ ******************************************************************************/
+
+XA_ERRORCODE xa_vorbis_decoder(xa_codec_handle_t p_xa_module_obj, WORD32 i_cmd, WORD32 i_idx, pVOID pv_value)
+{
+    /* ...process common audio-decoder commands */
+    if (i_cmd == XA_API_CMD_GET_CONFIG_PARAM)
+    {
+        return xa_vorbis_get_config_param(p_xa_module_obj, i_idx, pv_value);
+    }
+    else
+    {
+        return xa_vorbis_dec(p_xa_module_obj, i_cmd, i_idx, pv_value);
+    }
+}
diff --git a/hifi/xaf/hifi-dpf/plugins/cadence/vorbis_dec/xa_vorbis_dec_api.h b/hifi/xaf/hifi-dpf/plugins/cadence/vorbis_dec/xa_vorbis_dec_api.h
new file mode 100644
index 0000000..f99660f
--- /dev/null
+++ b/hifi/xaf/hifi-dpf/plugins/cadence/vorbis_dec/xa_vorbis_dec_api.h
@@ -0,0 +1,121 @@
+/*******************************************************************************
+* Copyright (C) 2018 Cadence Design Systems, Inc.
+* 
+* Permission is hereby granted, free of charge, to any person obtaining
+* a copy of this software and associated documentation files (the
+* "Software"), to use this Software with Cadence processor cores only and 
+* not with any other processors and platforms, subject to
+* the following conditions:
+* 
+* The above copyright notice and this permission notice shall be included
+* in all copies or substantial portions of the Software.
+* 
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+******************************************************************************/
+/*******************************************************************************
+*
+* NOTE, ANY CHANGES TO THIS FILE MAY AFFECT UNDERLYING AUDIO / SPEECH CODEC
+* LIBRARY COMPONENT FROM CADENCE DESIGN SYSTEMS, INC.
+*
+******************************************************************************/
+
+
+
+#ifndef __XA_VORBIS_DEC_API_H__
+#define __XA_VORBIS_DEC_API_H__
+
+#include <xa_memory_standards.h>
+
+/* vorbis_dec-specific configuration parameters */
+enum xa_config_param_vorbis_dec 
+{
+    XA_VORBISDEC_CONFIG_PARAM_SAMP_FREQ                         = 0,
+    XA_VORBISDEC_CONFIG_PARAM_NUM_CHANNELS                      = 1,
+    XA_VORBISDEC_CONFIG_PARAM_PCM_WDSZ                          = 2,
+    XA_VORBISDEC_CONFIG_PARAM_COMMENT_MEM_PTR                   = 3,
+    XA_VORBISDEC_CONFIG_PARAM_COMMENT_MEM_SIZE                  = 4,
+    XA_VORBISDEC_CONFIG_PARAM_GET_CUR_BITRATE                   = 5,
+    XA_VORBISDEC_CONFIG_PARAM_RAW_VORBIS_FILE_MODE              = 6,
+    XA_VORBISDEC_CONFIG_PARAM_RAW_VORBIS_LAST_PKT_GRANULE_POS   = 7,
+    XA_VORBISDEC_CONFIG_PARAM_OGG_MAX_PAGE_SIZE                 = 8,
+    XA_VORBISDEC_CONFIG_PARAM_RUNTIME_MEM                       = 9
+};
+
+/* commands */
+#include <xa_apicmd_standards.h>
+
+/* vorbis_dec-specific command types */
+/* (none) */
+
+/* error codes */
+#include <xa_error_standards.h>
+#define XA_CODEC_VORBIS_DEC 7
+
+/* vorbis_dec-specific error codes */
+
+/*****************************************************************************/
+/* Class 1: Configuration Errors                                     */
+/*****************************************************************************/
+/* Nonfatal Errors */
+enum xa_error_nonfatal_config_vorbis_dec
+{
+    XA_VORBISDEC_CONFIG_NONFATAL_GROUPED_STREAM = XA_ERROR_CODE(xa_severity_nonfatal, xa_class_config, XA_CODEC_VORBIS_DEC, 0),
+    XA_VORBISDEC_CONFIG_NONFATAL_BAD_PARAM = XA_ERROR_CODE(xa_severity_nonfatal, xa_class_config, XA_CODEC_VORBIS_DEC, 1)
+};
+
+/* Fatal Errors */
+enum xa_error_fatal_config_vorbis_dec
+{
+    XA_VORBISDEC_CONFIG_FATAL_BADHDR            = XA_ERROR_CODE(xa_severity_fatal, xa_class_config, XA_CODEC_VORBIS_DEC, 0),
+    XA_VORBISDEC_CONFIG_FATAL_NOTVORBIS         = XA_ERROR_CODE(xa_severity_fatal, xa_class_config, XA_CODEC_VORBIS_DEC, 1),
+    XA_VORBISDEC_CONFIG_FATAL_BADINFO           = XA_ERROR_CODE(xa_severity_fatal, xa_class_config, XA_CODEC_VORBIS_DEC, 2),
+    XA_VORBISDEC_CONFIG_FATAL_BADVERSION        = XA_ERROR_CODE(xa_severity_fatal, xa_class_config, XA_CODEC_VORBIS_DEC, 3),
+    XA_VORBISDEC_CONFIG_FATAL_BADBOOKS          = XA_ERROR_CODE(xa_severity_fatal, xa_class_config, XA_CODEC_VORBIS_DEC, 4),
+    XA_VORBISDEC_CONFIG_FATAL_CODEBOOK_DECODE   = XA_ERROR_CODE(xa_severity_fatal, xa_class_config, XA_CODEC_VORBIS_DEC, 5),
+    XA_VORBISDEC_CONFIG_FATAL_INVALID_PARAM     = XA_ERROR_CODE(xa_severity_fatal, xa_class_config, XA_CODEC_VORBIS_DEC, 6)
+};
+
+/*****************************************************************************/
+/* Class 2: Execution Errors                                                 */
+/*****************************************************************************/
+/* Nonfatal Errors */
+enum xa_error_nonfatal_execute_vorbis_dec
+{
+    XA_VORBISDEC_EXECUTE_NONFATAL_OV_HOLE = XA_ERROR_CODE(xa_severity_nonfatal, xa_class_execute, XA_CODEC_VORBIS_DEC, 0),
+    XA_VORBISDEC_EXECUTE_NONFATAL_OV_NOTAUDIO = XA_ERROR_CODE(xa_severity_nonfatal, xa_class_execute, XA_CODEC_VORBIS_DEC, 1),
+    XA_VORBISDEC_EXECUTE_NONFATAL_OV_BADPACKET = XA_ERROR_CODE(xa_severity_nonfatal, xa_class_execute, XA_CODEC_VORBIS_DEC, 2),
+    XA_VORBISDEC_EXECUTE_NONFATAL_OV_RUNTIME_DECODE_FLUSH_IN_PROGRESS = XA_ERROR_CODE(xa_severity_nonfatal, xa_class_execute, XA_CODEC_VORBIS_DEC, 3),
+    XA_VORBISDEC_EXECUTE_NONFATAL_OV_INVALID_STRM_POS = XA_ERROR_CODE(xa_severity_nonfatal, xa_class_execute, XA_CODEC_VORBIS_DEC, 4),
+    XA_VORBISDEC_EXECUTE_NONFATAL_OV_INSUFFICIENT_DATA = XA_ERROR_CODE(xa_severity_nonfatal, xa_class_execute, XA_CODEC_VORBIS_DEC, 5),
+    XA_VORBISDEC_EXECUTE_NONFATAL_OV_UNEXPECTED_IDENT_PKT_RECEIVED = XA_ERROR_CODE(xa_severity_nonfatal, xa_class_execute, XA_CODEC_VORBIS_DEC, 6),
+    XA_VORBISDEC_EXECUTE_NONFATAL_OV_UNEXPECTED_HEADER_PKT_RECEIVED = XA_ERROR_CODE(xa_severity_nonfatal, xa_class_execute, XA_CODEC_VORBIS_DEC, 7)
+};
+/* Fatal Errors */
+enum xa_error_fatal_execute_vorbis_dec
+{
+    XA_VORBISDEC_EXECUTE_FATAL_PERSIST_ALLOC                = XA_ERROR_CODE(xa_severity_fatal, xa_class_execute, XA_CODEC_VORBIS_DEC, 0),
+    XA_VORBISDEC_EXECUTE_FATAL_SCRATCH_ALLOC                = XA_ERROR_CODE(xa_severity_fatal, xa_class_execute, XA_CODEC_VORBIS_DEC, 1),
+    XA_VORBISDEC_EXECUTE_FATAL_CORRUPT_STREAM               = XA_ERROR_CODE(xa_severity_fatal, xa_class_execute, XA_CODEC_VORBIS_DEC, 2),
+    XA_VORBISDEC_EXECUTE_FATAL_INSUFFICIENT_INP_BUF_SIZE    = XA_ERROR_CODE(xa_severity_fatal, xa_class_execute, XA_CODEC_VORBIS_DEC, 3)
+};
+
+#include "xa_type_def.h"
+
+#ifdef __cplusplus
+    extern "C" {
+#endif /* __cplusplus */
+
+    xa_codec_func_t xa_vorbis_dec;
+
+#ifdef __cplusplus
+    }
+#endif /* __cplusplus */
+
+#endif /* __XA_VORBIS_DEC_API_H__ */
diff --git a/hifi/xaf/host-apf/Android.bp b/hifi/xaf/host-apf/Android.bp
new file mode 100644
index 0000000..5887538
--- /dev/null
+++ b/hifi/xaf/host-apf/Android.bp
@@ -0,0 +1,41 @@
+// Copyright (C) 2020 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package {
+    // See: http://go/android-license-faq
+    // A large-scale-change added 'default_applicable_licenses' to import
+    // all of the 'license_kinds' from "device_linaro_hikey_license"
+    // to get the below license kinds:
+    //   SPDX-license-identifier-MIT
+    default_applicable_licenses: ["device_linaro_hikey_license"],
+}
+
+cc_prebuilt_binary {
+    name: "dhifimesg",
+    srcs: ["tools/dhifimesg"],
+    shared_libs: [
+        "libutils",
+        "liblog",
+        "libbinder",
+        "libc++",
+        "libdl",
+        "libc",
+        "libm",
+    ],
+    compile_multilib: "64",
+    vendor: true,
+    strip: {
+        none: true,
+    },
+}
diff --git a/hifi/xaf/host-apf/Android.mk b/hifi/xaf/host-apf/Android.mk
new file mode 100644
index 0000000..270c9aa
--- /dev/null
+++ b/hifi/xaf/host-apf/Android.mk
@@ -0,0 +1,76 @@
+LOCAL_PATH := $(call my-dir)
+################################################################################
+# libxtensa_proxy library building
+################################################################################
+
+include $(CLEAR_VARS)
+LOCAL_VENDOR_MODULE := true
+common_C_INCLUDES := 	\
+        $(LOCAL_PATH)/include	\
+        $(LOCAL_PATH)/include/audio		\
+        $(LOCAL_PATH)/include/os/android	\
+        $(LOCAL_PATH)/include/sys/fio  \
+        $(LOCAL_PATH)/playback	\
+        $(LOCAL_PATH)/playback/tinyalsa	\
+        $(LOCAL_PATH)/utest/include
+
+LOCAL_SRC_FILES := 		\
+	proxy/xf-proxy.c	\
+	proxy/xaf-api.c         \
+	proxy/xf-trace.c	\
+	proxy/xf-fio.c 		\
+	playback/xa_playback.c  \
+	playback/tinyalsa/pcm.c \
+	utest/xaf-utils-test.c	\
+	utest/xaf-mem-test.c
+
+C_FLAGS := -DXF_TRACE=0 -Wall -Werror -Wno-everything
+
+LOCAL_SHARED_LIBRARIES := liblog
+LOCAL_C_INCLUDES := $(common_C_INCLUDES)
+LOCAL_C_INCLUDES += external/expat/lib
+LOCAL_CFLAGS := $(C_FLAGS)
+LOCAL_MODULE := libxtensa_proxy
+LOCAL_LICENSE_KINDS := SPDX-license-identifier-MIT
+LOCAL_LICENSE_CONDITIONS := notice
+LOCAL_MODULE_TAGS := optional
+
+include $(BUILD_STATIC_LIBRARY)
+
+################################################################################
+# xaf-dec-test: fileinput->ogg/pcm decoder->speaker output
+################################################################################
+include $(CLEAR_VARS)
+LOCAL_VENDOR_MODULE := true
+LOCAL_MODULE := xaf-dec-test
+LOCAL_LICENSE_KINDS := SPDX-license-identifier-MIT
+LOCAL_LICENSE_CONDITIONS := notice
+
+LOCAL_SRC_FILES := \
+    utest/xaf-dec-test.c
+
+LOCAL_C_INCLUDES := $(common_C_INCLUDES)
+LOCAL_CFLAGS := $(C_FLAGS)
+LOCAL_STATIC_LIBRARIES := libxtensa_proxy
+LOCAL_SHARED_LIBRARIES := liblog libcutils
+LOCAL_MODULE_TAGS := optional
+include $(BUILD_EXECUTABLE)
+
+################################################################################
+# xaf-dec-mix-test: fileinput->ogg orpcm decoder->Mixer->speaker output
+################################################################################
+include $(CLEAR_VARS)
+LOCAL_VENDOR_MODULE := true
+LOCAL_MODULE := xaf-dec-mix-test
+LOCAL_LICENSE_KINDS := SPDX-license-identifier-MIT
+LOCAL_LICENSE_CONDITIONS := notice
+
+LOCAL_SRC_FILES := \
+    utest/xaf-dec-mix-test.c
+
+LOCAL_C_INCLUDES := $(common_C_INCLUDES)
+LOCAL_CFLAGS := $(C_FLAGS)
+LOCAL_STATIC_LIBRARIES := libxtensa_proxy
+LOCAL_SHARED_LIBRARIES := liblog libcutils
+LOCAL_MODULE_TAGS := optional
+include $(BUILD_EXECUTABLE)
diff --git a/hifi/xaf/host-apf/include/audio/xa-audio-decoder-api.h b/hifi/xaf/host-apf/include/audio/xa-audio-decoder-api.h
new file mode 100644
index 0000000..f82544c
--- /dev/null
+++ b/hifi/xaf/host-apf/include/audio/xa-audio-decoder-api.h
@@ -0,0 +1,46 @@
+/*******************************************************************************
+* Copyright (C) 2018 Cadence Design Systems, Inc.
+* 
+* Permission is hereby granted, free of charge, to any person obtaining
+* a copy of this software and associated documentation files (the
+* "Software"), to use this Software with Cadence processor cores only and 
+* not with any other processors and platforms, subject to
+* the following conditions:
+* 
+* The above copyright notice and this permission notice shall be included
+* in all copies or substantial portions of the Software.
+* 
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+******************************************************************************/
+
+#ifndef __XA_ADEC_API_H__
+#define __XA_ADEC_API_H__
+
+/* ...generic audio-decoder configuration parameters */
+enum xa_config_param_codec {
+    XA_CODEC_CONFIG_PARAM_CHANNELS       = 0x10000 + 0,
+    XA_CODEC_CONFIG_PARAM_SAMPLE_RATE    = 0x10000 + 1,
+    XA_CODEC_CONFIG_PARAM_PCM_WIDTH      = 0x10000 + 2,
+    XA_CODEC_CONFIG_PARAM_PRODUCED       = 0x10000 + 3
+};
+
+/* ...ports indices */
+enum xa_codec_ports {
+    XA_CODEC_INPUT_PORT  = 0,
+    XA_CODEC_OUTPUT_PORT = 1
+};
+
+/* ...non-fatal execution errors */
+enum
+{
+    XA_CODEC_EXEC_NO_DATA = XA_ERROR_CODE(xa_severity_nonfatal, xa_class_execute, XA_CODEC_GENERIC, 0)
+};
+
+#endif
diff --git a/hifi/xaf/host-apf/include/audio/xa-mixer-api.h b/hifi/xaf/host-apf/include/audio/xa-mixer-api.h
new file mode 100644
index 0000000..c9695b4
--- /dev/null
+++ b/hifi/xaf/host-apf/include/audio/xa-mixer-api.h
@@ -0,0 +1,154 @@
+/*******************************************************************************
+* Copyright (C) 2018 Cadence Design Systems, Inc.
+* 
+* Permission is hereby granted, free of charge, to any person obtaining
+* a copy of this software and associated documentation files (the
+* "Software"), to use this Software with Cadence processor cores only and 
+* not with any other processors and platforms, subject to
+* the following conditions:
+* 
+* The above copyright notice and this permission notice shall be included
+* in all copies or substantial portions of the Software.
+* 
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+******************************************************************************/
+
+#ifndef __XA_MIXER_API_H__
+#define __XA_MIXER_API_H__
+
+/*******************************************************************************
+ * Includes
+ ******************************************************************************/
+
+/* ...generic commands */
+#include "xa_apicmd_standards.h"
+
+/* ...generic error codes */
+#include "xa_error_standards.h"
+
+/* ...common types */
+#include "xa_type_def.h"
+
+/*******************************************************************************
+ * Constants definitions
+ ******************************************************************************/
+
+/* ...mixer-specific configuration parameters */
+enum xa_config_param_mixer {
+    XA_MIXER_CONFIG_PARAM_INPUT_TRACKS      = 0,
+    XA_MIXER_CONFIG_PARAM_PCM_WIDTH         = 1,
+    XA_MIXER_CONFIG_PARAM_CHANNELS          = 2,
+    XA_MIXER_CONFIG_PARAM_SAMPLE_RATE       = 4,
+    XA_MIXER_CONFIG_PARAM_FRAME_SIZE        = 5,
+    XA_MIXER_CONFIG_PARAM_BUFFER_SIZE       = 6,
+    XA_MIXER_CONFIG_PARAM_VOLUME            = 7,
+    XA_MIXER_CONFIG_PARAM_NUM               = 8
+};
+
+/* ...component identifier (informative) */
+#define XA_CODEC_MIXER                  1
+
+/* ...global limitation - maximal mixer track number */
+#define XA_MIXER_MAX_TRACK_NUMBER       4
+
+/* ...volume representation */
+#define __XA_MIXER_VOLUME(v)            \
+    ({ u32  __v = (u32)((v) * (1 << 12)); (__v > 0xFFFF ? __v = 0xFFFF : 0); (u16)__v; })
+
+/* ...mixer volume setting command encoding */
+#define XA_MIXER_VOLUME(track, channel, volume) \
+    (__XA_MIXER_VOLUME(volume) | ((track) << 16) | ((channel) << 20))
+
+/*******************************************************************************
+ * Class 0: API Errors
+ ******************************************************************************/
+
+#define XA_MIXER_API_NONFATAL(e)        \
+    XA_ERROR_CODE(xa_severity_nonfatal, xa_class_api, XA_CODEC_MIXER, (e))
+
+#define XA_MIXER_API_FATAL(e)           \
+    XA_ERROR_CODE(xa_severity_fatal, xa_class_api, XA_CODEC_MIXER, (e))
+
+enum xa_error_nonfatal_api_mixer {
+    XA_MIXER_API_NONFATAL_MAX = XA_MIXER_API_NONFATAL(0)
+};
+
+enum xa_error_fatal_api_mixer {
+    XA_MIXER_API_FATAL_MAX = XA_MIXER_API_FATAL(0)
+};
+
+/*******************************************************************************
+ * Class 1: Configuration Errors
+ ******************************************************************************/
+
+#define XA_MIXER_CONFIG_NONFATAL(e)     \
+    XA_ERROR_CODE(xa_severity_nonfatal, xa_class_config, XA_CODEC_MIXER, (e))
+
+#define XA_MIXER_CONFIG_FATAL(e)        \
+    XA_ERROR_CODE(xa_severity_fatal, xa_class_config, XA_CODEC_MIXER, (e))
+
+enum xa_error_nonfatal_config_mixer {
+    XA_MIXER_CONFIG_NONFATAL_RANGE  = XA_MIXER_CONFIG_NONFATAL(0),
+    XA_MIXER_CONFIG_NONFATAL_STATE  = XA_MIXER_CONFIG_NONFATAL(1),
+    XA_MIXER_CONFIG_NONFATAL_MAX    = XA_MIXER_CONFIG_NONFATAL(2)
+};
+
+enum xa_error_fatal_config_mixer {
+    XA_MIXER_CONFIG_FATAL_RANGE     = XA_MIXER_CONFIG_FATAL(0),
+    XA_MIXER_CONFIG_FATAL_TRACK_STATE = XA_MIXER_CONFIG_FATAL(0 + XA_MIXER_CONFIG_NONFATAL_MAX),
+    XA_MIXER_CONFIG_FATAL_MAX       = XA_MIXER_CONFIG_FATAL(1)
+};
+
+/*******************************************************************************
+ * Class 2: Execution Class Errors
+ ******************************************************************************/
+
+#define XA_MIXER_EXEC_NONFATAL(e)       \
+    XA_ERROR_CODE(xa_severity_nonfatal, xa_class_execute, XA_CODEC_MIXER, (e))
+
+#define XA_MIXER_EXEC_FATAL(e)          \
+    XA_ERROR_CODE(xa_severity_fatal, xa_class_execute, XA_CODEC_MIXER, (e))
+
+enum xa_error_nonfatal_execute_mixer {
+    XA_MIXER_EXEC_NONFATAL_STATE    = XA_MIXER_EXEC_NONFATAL(0),
+    XA_MIXER_EXEC_NONFATAL_NO_DATA  = XA_MIXER_EXEC_NONFATAL(1),
+    XA_MIXER_EXEC_NONFATAL_INPUT    = XA_MIXER_EXEC_NONFATAL(2),
+    XA_MIXER_EXEC_NONFATAL_OUTPUT   = XA_MIXER_EXEC_NONFATAL(3),
+    XA_MIXER_EXEC_NONFATAL_MAX      = XA_MIXER_EXEC_NONFATAL(4)
+};
+
+enum xa_error_fatal_execute_mixer {
+    XA_MIXER_EXEC_FATAL_STATE       = XA_MIXER_EXEC_FATAL(0),
+    XA_MIXER_EXEC_FATAL_INPUT       = XA_MIXER_EXEC_FATAL(1),
+    XA_MIXER_EXEC_FATAL_OUTPUT      = XA_MIXER_EXEC_FATAL(2),
+    XA_MIXER_EXEC_FATAL_MAX         = XA_MIXER_EXEC_FATAL(3)
+};
+
+/*******************************************************************************
+ * API function definition (tbd)
+ ******************************************************************************/
+
+#if defined(USE_DLL) && defined(_WIN32)
+#define DLL_SHARED __declspec(dllimport)
+#elif defined (_WINDLL)
+#define DLL_SHARED __declspec(dllexport)
+#else
+#define DLL_SHARED
+#endif
+
+#if defined(__cplusplus)
+extern "C" {
+#endif  /* __cplusplus */
+DLL_SHARED xa_codec_func_t xa_mixer;
+#if defined(__cplusplus)
+}
+#endif  /* __cplusplus */
+
+#endif /* __XA_MIXER_API_H__ */
diff --git a/hifi/xaf/host-apf/include/audio/xa-pcm-api.h b/hifi/xaf/host-apf/include/audio/xa-pcm-api.h
new file mode 100644
index 0000000..94fb136
--- /dev/null
+++ b/hifi/xaf/host-apf/include/audio/xa-pcm-api.h
@@ -0,0 +1,138 @@
+/*******************************************************************************
+* Copyright (C) 2018 Cadence Design Systems, Inc.
+* 
+* Permission is hereby granted, free of charge, to any person obtaining
+* a copy of this software and associated documentation files (the
+* "Software"), to use this Software with Cadence processor cores only and 
+* not with any other processors and platforms, subject to
+* the following conditions:
+* 
+* The above copyright notice and this permission notice shall be included
+* in all copies or substantial portions of the Software.
+* 
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+******************************************************************************/
+
+#ifndef __XA_PCM_API_H__
+#define __XA_PCM_API_H__
+
+/*******************************************************************************
+ * Includes
+ ******************************************************************************/
+
+#include "xa_type_def.h"
+#include "xa_error_standards.h"
+#include "xa_apicmd_standards.h"
+#include "xa_memory_standards.h"
+
+/*******************************************************************************
+ * Constants definitions
+ ******************************************************************************/
+
+/* ...codec-specific configuration parameters */
+enum xa_config_param_pcm {
+    XA_PCM_CONFIG_PARAM_SAMPLE_RATE         = 0,
+    XA_PCM_CONFIG_PARAM_IN_PCM_WIDTH        = 1,
+    XA_PCM_CONFIG_PARAM_IN_CHANNELS         = 2,
+    XA_PCM_CONFIG_PARAM_OUT_PCM_WIDTH       = 3,
+    XA_PCM_CONFIG_PARAM_OUT_CHANNELS        = 4,
+    XA_PCM_CONFIG_PARAM_CHANROUTING         = 5,
+    XA_PCM_CONFIG_PARAM_NUM                 = 6,
+};
+
+/* ...component identifier (informative) */
+#define XA_CODEC_PCM                  16
+
+/*******************************************************************************
+ * Class 0: API Errors
+ ******************************************************************************/
+
+#define XA_PCM_API_NONFATAL(e)          \
+    XA_ERROR_CODE(xa_severity_nonfatal, xa_class_api, XA_CODEC_PCM, (e))
+
+#define XA_PCM_API_FATAL(e)             \
+    XA_ERROR_CODE(xa_severity_fatal, xa_class_api, XA_CODEC_PCM, (e))
+
+enum xa_error_nonfatal_api_pcm {
+    XA_PCM_API_NONFATAL_MAX = XA_PCM_API_NONFATAL(0)
+};
+
+enum xa_error_fatal_api_pcm {
+    XA_PCM_API_FATAL_MAX = XA_PCM_API_FATAL(0)
+};
+
+/*******************************************************************************
+ * Class 1: Configuration Errors
+ ******************************************************************************/
+
+#define XA_PCM_CONFIG_NONFATAL(e)       \
+    XA_ERROR_CODE(xa_severity_nonfatal, xa_class_config, XA_CODEC_PCM, (e))
+
+#define XA_PCM_CONFIG_FATAL(e)          \
+    XA_ERROR_CODE(xa_severity_fatal, xa_class_config, XA_CODEC_PCM, (e))
+
+enum xa_error_nonfatal_config_pcm {
+    XA_PCM_CONFIG_NONFATAL_RANGE    = XA_PCM_CONFIG_NONFATAL(0),
+    XA_PCM_CONFIG_NONFATAL_STATE    = XA_PCM_CONFIG_NONFATAL(1),
+    XA_PCM_CONFIG_NONFATAL_MAX      = XA_PCM_CONFIG_NONFATAL(2)
+};
+
+enum xa_error_fatal_config_pcm {
+    XA_PCM_CONFIG_FATAL_RANGE       = XA_PCM_CONFIG_FATAL(0),
+    XA_PCM_CONFIG_FATAL_MAX         = XA_PCM_CONFIG_FATAL(1)
+};
+
+/*******************************************************************************
+ * Class 2: Execution Class Errors
+ ******************************************************************************/
+
+#define XA_PCM_EXEC_NONFATAL(e)         \
+    XA_ERROR_CODE(xa_severity_nonfatal, xa_class_execute, XA_CODEC_PCM, (e))
+
+#define XA_PCM_EXEC_FATAL(e)            \
+    XA_ERROR_CODE(xa_severity_fatal, xa_class_execute, XA_CODEC_PCM, (e))
+
+enum xa_error_nonfatal_execute_pcm {
+    XA_PCM_EXEC_NONFATAL_STATE      = XA_PCM_EXEC_NONFATAL(0),
+    XA_PCM_EXEC_NONFATAL_NO_DATA    = XA_PCM_EXEC_NONFATAL(1),
+    XA_PCM_EXEC_NONFATAL_INPUT      = XA_PCM_EXEC_NONFATAL(2),
+    XA_PCM_EXEC_NONFATAL_OUTPUT     = XA_PCM_EXEC_NONFATAL(3),
+    XA_PCM_EXEC_NONFATAL_MAX        = XA_PCM_EXEC_NONFATAL(4)
+};
+
+enum xa_error_fatal_execute_pcm {
+    XA_PCM_EXEC_FATAL_STATE         = XA_PCM_EXEC_FATAL(0),
+    XA_PCM_EXEC_FATAL_INPUT         = XA_PCM_EXEC_FATAL(1),
+    XA_PCM_EXEC_FATAL_OUTPUT        = XA_PCM_EXEC_FATAL(2),
+    XA_PCM_EXEC_FATAL_MAX           = XA_PCM_EXEC_FATAL(3)
+};
+
+/*******************************************************************************
+ * API function definition
+ ******************************************************************************/
+
+#if defined(USE_DLL) && defined(_WIN32)
+#define DLL_SHARED __declspec(dllimport)
+#elif defined (_WINDLL)
+#define DLL_SHARED __declspec(dllexport)
+#else
+#define DLL_SHARED
+#endif
+
+#if defined(__cplusplus)
+extern "C" {
+#endif  /* __cplusplus */
+DLL_SHARED xa_codec_func_t xa_pcm_codec;
+#if defined(__cplusplus)
+}
+#endif  /* __cplusplus */
+
+#endif /* __XA_PCM_API_H__ */
+
diff --git a/hifi/xaf/host-apf/include/audio/xa_apicmd_standards.h b/hifi/xaf/host-apf/include/audio/xa_apicmd_standards.h
new file mode 100644
index 0000000..eb1b78e
--- /dev/null
+++ b/hifi/xaf/host-apf/include/audio/xa_apicmd_standards.h
@@ -0,0 +1,107 @@
+/*******************************************************************************
+* Copyright (C) 2018 Cadence Design Systems, Inc.
+* 
+* Permission is hereby granted, free of charge, to any person obtaining
+* a copy of this software and associated documentation files (the
+* "Software"), to use this Software with Cadence processor cores only and 
+* not with any other processors and platforms, subject to
+* the following conditions:
+* 
+* The above copyright notice and this permission notice shall be included
+* in all copies or substantial portions of the Software.
+* 
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+******************************************************************************/
+/*******************************************************************************
+*
+* NOTE, ANY CHANGES TO THIS FILE MAY AFFECT UNDERLYING AUDIO / SPEECH CODEC
+* LIBRARY COMPONENT FROM CADENCE DESIGN SYSTEMS, INC.
+*
+******************************************************************************/
+
+
+#ifndef __XA_API_CMD_STANDARDS_H__
+#define __XA_API_CMD_STANDARDS_H__
+
+/*****************************************************************************/
+/* Standard API commands                                                     */
+/*****************************************************************************/
+
+enum xa_api_cmd_generic {
+  XA_API_CMD_GET_LIB_ID_STRINGS	      = 0x0001,
+
+  XA_API_CMD_GET_API_SIZE             = 0x0002,
+  XA_API_CMD_INIT                     = 0x0003,
+
+  XA_API_CMD_SET_CONFIG_PARAM         = 0x0004,
+  XA_API_CMD_GET_CONFIG_PARAM         = 0x0005,
+
+  XA_API_CMD_GET_MEMTABS_SIZE         = 0x0006,
+  XA_API_CMD_SET_MEMTABS_PTR          = 0x0007,
+  XA_API_CMD_GET_N_MEMTABS            = 0x0008,
+
+  XA_API_CMD_EXECUTE                  = 0x0009,
+
+  XA_API_CMD_PUT_INPUT_QUERY          = 0x000A,
+  XA_API_CMD_GET_CURIDX_INPUT_BUF     = 0x000B,
+  XA_API_CMD_SET_INPUT_BYTES          = 0x000C,
+  XA_API_CMD_GET_OUTPUT_BYTES         = 0x000D,
+  XA_API_CMD_INPUT_OVER               = 0x000E,
+
+  XA_API_CMD_GET_MEM_INFO_SIZE        = 0x0010,
+  XA_API_CMD_GET_MEM_INFO_ALIGNMENT   = 0x0011,
+  XA_API_CMD_GET_MEM_INFO_TYPE        = 0x0012,
+  XA_API_CMD_GET_MEM_INFO_PLACEMENT   = 0x0013,
+  XA_API_CMD_GET_MEM_INFO_PRIORITY    = 0x0014,
+  XA_API_CMD_SET_MEM_PTR              = 0x0015,
+  XA_API_CMD_SET_MEM_INFO_SIZE        = 0x0016,
+  XA_API_CMD_SET_MEM_PLACEMENT        = 0x0017,
+
+  XA_API_CMD_GET_N_TABLES             = 0x0018,
+  XA_API_CMD_GET_TABLE_INFO_SIZE      = 0x0019,
+  XA_API_CMD_GET_TABLE_INFO_ALIGNMENT = 0x001A,
+  XA_API_CMD_GET_TABLE_INFO_PRIORITY  = 0x001B,
+  XA_API_CMD_SET_TABLE_PTR            = 0x001C,
+  XA_API_CMD_GET_TABLE_PTR            = 0x001D
+};
+
+/*****************************************************************************/
+/* Standard API command indices                                              */
+/*****************************************************************************/
+
+enum xa_cmd_type_generic {
+  /* XA_API_CMD_GET_LIB_ID_STRINGS indices */
+  XA_CMD_TYPE_LIB_NAME                    = 0x0100,
+  XA_CMD_TYPE_LIB_VERSION                 = 0x0200,
+  XA_CMD_TYPE_API_VERSION                 = 0x0300,
+
+  /* XA_API_CMD_INIT indices */
+  XA_CMD_TYPE_INIT_API_PRE_CONFIG_PARAMS  = 0x0100,
+  XA_CMD_TYPE_INIT_API_POST_CONFIG_PARAMS = 0x0200,
+  XA_CMD_TYPE_INIT_PROCESS                = 0x0300,
+  XA_CMD_TYPE_INIT_DONE_QUERY             = 0x0400,
+
+  /* XA_API_CMD_EXECUTE indices */
+  XA_CMD_TYPE_DO_EXECUTE                  = 0x0100,
+  XA_CMD_TYPE_DONE_QUERY                  = 0x0200,
+  XA_CMD_TYPE_DO_RUNTIME_INIT             = 0x0300
+};
+
+
+/*****************************************************************************/
+/* Standard API configuration parameters                                     */
+/*****************************************************************************/
+
+enum xa_config_param_generic {
+  XA_CONFIG_PARAM_CUR_INPUT_STREAM_POS    = 0x0100,
+  XA_CONFIG_PARAM_GEN_INPUT_STREAM_POS    = 0x0200,
+};
+
+#endif /* __XA_API_CMD_STANDARDS_H__ */
diff --git a/hifi/xaf/host-apf/include/audio/xa_error_standards.h b/hifi/xaf/host-apf/include/audio/xa_error_standards.h
new file mode 100644
index 0000000..1b67b52
--- /dev/null
+++ b/hifi/xaf/host-apf/include/audio/xa_error_standards.h
@@ -0,0 +1,79 @@
+/*******************************************************************************
+* Copyright (C) 2018 Cadence Design Systems, Inc.
+* 
+* Permission is hereby granted, free of charge, to any person obtaining
+* a copy of this software and associated documentation files (the
+* "Software"), to use this Software with Cadence processor cores only and 
+* not with any other processors and platforms, subject to
+* the following conditions:
+* 
+* The above copyright notice and this permission notice shall be included
+* in all copies or substantial portions of the Software.
+* 
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+******************************************************************************/
+/*******************************************************************************
+*
+* NOTE, ANY CHANGES TO THIS FILE MAY AFFECT UNDERLYING AUDIO / SPEECH CODEC
+* LIBRARY COMPONENT FROM CADENCE DESIGN SYSTEMS, INC.
+*
+******************************************************************************/
+
+
+#ifndef __XA_ERROR_STANDARDS_H__
+#define __XA_ERROR_STANDARDS_H__
+
+/*****************************************************************************/
+/* File includes                                                             */
+/*  xa_type_def.h                                                            */
+/*****************************************************************************/
+
+/*****************************************************************************/
+/* Constant hash defines                                                     */
+/*****************************************************************************/
+#define XA_NO_ERROR	0
+#define XA_FATAL_ERROR	0x80000000
+
+enum xa_error_severity {
+  xa_severity_nonfatal = 0,
+  xa_severity_fatal    = 0xffffffff
+};
+
+enum xa_error_class {
+  xa_class_api     = 0,
+  xa_class_config  = 1,
+  xa_class_execute = 2,
+  xa_class_proxy   = 3
+};
+
+#define XA_CODEC_GENERIC	0
+
+#define XA_ERROR_CODE(severity, class, codec, index)	((severity << 15) | (class << 11) | (codec << 6) | index)
+#define XA_ERROR_SEVERITY(code)	(((code) & XA_FATAL_ERROR) != 0)
+#define XA_ERROR_CLASS(code)	(((code) >> 11) & 0x0f)
+#define XA_ERROR_CODEC(code)    (((code) >>  6) & 0x1f)
+#define XA_ERROR_SUBCODE(code)	(((code) >>  0) & 0x3f)
+
+/* Our convention is that only api-class errors can be generic ones. */
+
+/*****************************************************************************/
+/* Class 0: API Errors                                                       */
+/*****************************************************************************/
+/* Non Fatal Errors */
+/* (none) */
+/* Fatal Errors */
+enum xa_error_fatal_api_generic {
+  XA_API_FATAL_MEM_ALLOC        = XA_ERROR_CODE(xa_severity_fatal, xa_class_api, XA_CODEC_GENERIC, 0),
+  XA_API_FATAL_MEM_ALIGN        = XA_ERROR_CODE(xa_severity_fatal, xa_class_api, XA_CODEC_GENERIC, 1),
+  XA_API_FATAL_INVALID_CMD      = XA_ERROR_CODE(xa_severity_fatal, xa_class_api, XA_CODEC_GENERIC, 2),
+  XA_API_FATAL_INVALID_CMD_TYPE = XA_ERROR_CODE(xa_severity_fatal, xa_class_api, XA_CODEC_GENERIC, 3)
+};
+
+#endif /* __XA_ERROR_STANDARDS_H__ */
diff --git a/hifi/xaf/host-apf/include/audio/xa_memory_standards.h b/hifi/xaf/host-apf/include/audio/xa_memory_standards.h
new file mode 100644
index 0000000..27ec455
--- /dev/null
+++ b/hifi/xaf/host-apf/include/audio/xa_memory_standards.h
@@ -0,0 +1,104 @@
+/*******************************************************************************
+* Copyright (C) 2018 Cadence Design Systems, Inc.
+* 
+* Permission is hereby granted, free of charge, to any person obtaining
+* a copy of this software and associated documentation files (the
+* "Software"), to use this Software with Cadence processor cores only and 
+* not with any other processors and platforms, subject to
+* the following conditions:
+* 
+* The above copyright notice and this permission notice shall be included
+* in all copies or substantial portions of the Software.
+* 
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+******************************************************************************/
+/*******************************************************************************
+*
+* NOTE, ANY CHANGES TO THIS FILE MAY AFFECT UNDERLYING AUDIO / SPEECH CODEC
+* LIBRARY COMPONENT FROM CADENCE DESIGN SYSTEMS, INC.
+*
+******************************************************************************/
+
+
+#ifndef __XA_MEMORY_STANDARDS_H__
+#define __XA_MEMORY_STANDARDS_H__
+
+/*****************************************************************************/
+/* Constant hash defines                                                     */
+/*****************************************************************************/
+/* when you don't need alignment, pass this to memory library */
+#define XA_MEM_NO_ALIGN				0x01
+
+/* standard memory types */
+/* to be used inter frames */
+#define XA_MEMTYPE_PERSIST				0x00 
+/* read write, to be used intra frames */
+#define XA_MEMTYPE_SCRATCH				0x01 
+/* read only memory, intra frame */
+#define XA_MEMTYPE_INPUT				0x02 
+/* read-write memory, for usable output, intra frame */
+#define XA_MEMTYPE_OUTPUT				0x03 
+/* readonly memory, inter frame */
+#define XA_MEMTYPE_TABLE				0x04 
+/* input buffer before mem tabs allocation */
+#define XA_MEMTYPE_PRE_FRAME_INPUT		0x05 
+/* input buffer before mem tabs allocation */
+#define XA_MEMTYPE_PRE_FRAME_SCRATCH	0x06 
+/* for local variables */
+#define XA_MEMTYPE_AUTO_VAR				0x80 
+
+/* standard memory priorities */
+#define XA_MEMPRIORITY_ANYWHERE			0x00
+#define XA_MEMPRIORITY_LOWEST			0x01
+#define XA_MEMPRIORITY_LOW				0x02
+#define XA_MEMPRIORITY_NORM				0x03
+#define XA_MEMPRIORITY_ABOVE_NORM		0x04
+#define XA_MEMPRIORITY_HIGH				0x05
+#define XA_MEMPRIORITY_HIGHER			0x06
+#define XA_MEMPRIORITY_CRITICAL			0x07
+
+/* standard memory placements */
+/* placement is defined by 64 bits */
+
+#define XA_MEMPLACE_FAST_RAM_0			0x000001
+#define XA_MEMPLACE_FAST_RAM_1			0x000002
+#define XA_MEMPLACE_FAST_RAM_2			0x000004
+#define XA_MEMPLACE_FAST_RAM_3			0x000008
+#define XA_MEMPLACE_FAST_RAM_4			0x000010
+#define XA_MEMPLACE_FAST_RAM_5			0x000020
+#define XA_MEMPLACE_FAST_RAM_6			0x000040
+#define XA_MEMPLACE_FAST_RAM_7			0x000080
+
+#define XA_MEMPLACE_INT_RAM_0			0x000100
+#define XA_MEMPLACE_INT_RAM_1			0x000200
+#define XA_MEMPLACE_INT_RAM_2			0x000400
+#define XA_MEMPLACE_INT_RAM_3			0x000800
+#define XA_MEMPLACE_INT_RAM_4			0x001000
+#define XA_MEMPLACE_INT_RAM_5			0x002000
+#define XA_MEMPLACE_INT_RAM_6			0x004000
+#define XA_MEMPLACE_INT_RAM_7			0x008000
+
+#define XA_MEMPLACE_EXT_RAM_0			0x010000
+#define XA_MEMPLACE_EXT_RAM_1			0x020000
+#define XA_MEMPLACE_EXT_RAM_2			0x040000
+#define XA_MEMPLACE_EXT_RAM_3			0x080000
+#define XA_MEMPLACE_EXT_RAM_4			0x100000
+#define XA_MEMPLACE_EXT_RAM_5			0x200000
+#define XA_MEMPLACE_EXT_RAM_6			0x400000
+#define XA_MEMPLACE_EXT_RAM_7			0x800000
+
+#define XA_MEMPLACE_DONTCARE_H			0xFFFFFFFF
+#define XA_MEMPLACE_DONTCARE_L			0xFFFFFFFF
+
+/* the simple common PC RAM */
+#define XA_PC_RAM_H					0x00000000
+#define XA_PC_RAM_L					XA_MEMPLACE_EXT_RAM_0
+
+#endif /* __XA_MEMORY_STANDARDS_H__ */
diff --git a/hifi/xaf/host-apf/include/audio/xa_type_def.h b/hifi/xaf/host-apf/include/audio/xa_type_def.h
new file mode 100644
index 0000000..e83cdd3
--- /dev/null
+++ b/hifi/xaf/host-apf/include/audio/xa_type_def.h
@@ -0,0 +1,98 @@
+/*******************************************************************************
+* Copyright (C) 2018 Cadence Design Systems, Inc.
+* 
+* Permission is hereby granted, free of charge, to any person obtaining
+* a copy of this software and associated documentation files (the
+* "Software"), to use this Software with Cadence processor cores only and 
+* not with any other processors and platforms, subject to
+* the following conditions:
+* 
+* The above copyright notice and this permission notice shall be included
+* in all copies or substantial portions of the Software.
+* 
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+******************************************************************************/
+/*******************************************************************************
+*
+* NOTE, ANY CHANGES TO THIS FILE MAY AFFECT UNDERLYING AUDIO / SPEECH CODEC
+* LIBRARY COMPONENT FROM CADENCE DESIGN SYSTEMS, INC.
+*
+******************************************************************************/
+
+
+#ifndef  __XA_TYPE_DEF_H__
+#define  __XA_TYPE_DEF_H__
+
+/****************************************************************************/
+/*     types               type define    prefix        examples      bytes */
+/************************  ***********    ******    ****************  ***** */
+typedef signed char             WORD8   ;/* b       WORD8    b_name     1   */
+typedef signed char         *   pWORD8  ;/* pb      pWORD8   pb_nmae    1   */
+typedef unsigned char           UWORD8  ;/* ub      UWORD8   ub_count   1   */
+typedef unsigned char       *   pUWORD8 ;/* pub     pUWORD8  pub_count  1   */
+
+typedef signed short            WORD16  ;/* s       WORD16   s_count    2   */
+typedef signed short        *   pWORD16 ;/* ps      pWORD16  ps_count   2   */
+typedef unsigned short          UWORD16 ;/* us      UWORD16  us_count   2   */
+typedef unsigned short      *   pUWORD16;/* pus     pUWORD16 pus_count  2   */
+
+typedef signed int              WORD24  ;/* k       WORD24   k_count    3   */
+typedef signed int          *   pWORD24 ;/* pk      pWORD24  pk_count   3   */
+typedef unsigned int            UWORD24 ;/* uk      UWORD24  uk_count   3   */
+typedef unsigned int        *   pUWORD24;/* puk     pUWORD24 puk_count  3   */
+
+typedef signed int              WORD32  ;/* i       WORD32   i_count    4   */
+typedef signed int          *   pWORD32 ;/* pi      pWORD32  pi_count   4   */
+typedef unsigned int            UWORD32 ;/* ui      UWORD32  ui_count   4   */
+typedef unsigned int        *   pUWORD32;/* pui     pUWORD32 pui_count  4   */
+
+typedef signed long long        WORD40  ;/* m       WORD40   m_count    5   */
+typedef signed long long    *   pWORD40 ;/* pm      pWORD40  pm_count   5   */
+typedef unsigned long long      UWORD40 ;/* um      UWORD40  um_count   5   */
+typedef unsigned long long  *   pUWORD40;/* pum     pUWORD40 pum_count  5   */
+
+typedef signed long long        WORD64  ;/* h       WORD64   h_count    8   */
+typedef signed long long    *   pWORD64 ;/* ph      pWORD64  ph_count   8   */
+typedef unsigned long long      UWORD64 ;/* uh      UWORD64  uh_count   8   */
+typedef unsigned long long  *   pUWORD64;/* puh     pUWORD64 puh_count  8   */
+
+typedef float                   FLOAT32 ;/* f       FLOAT32  f_count    4   */
+typedef float               *   pFLOAT32;/* pf      pFLOAT32 pf_count   4   */
+typedef double                  FLOAT64 ;/* d       UFLOAT64 d_count    8   */
+typedef double              *   pFlOAT64;/* pd      pFLOAT64 pd_count   8   */
+
+typedef void                    VOID    ;/* v       VOID     v_flag     4   */
+typedef void                *   pVOID   ;/* pv      pVOID    pv_flag    4   */
+
+/* variable size types: platform optimized implementation */
+//typedef signed int              BOOL    ;/* bool    BOOL     bool_true      */
+//typedef unsigned int            UBOOL   ;/* ubool   BOOL     ubool_true     */
+typedef signed int              FLAG    ;/* flag    FLAG     flag_false     */
+typedef unsigned int            UFLAG   ;/* uflag   FLAG     uflag_false    */
+typedef signed int              LOOPIDX ;/* lp      LOOPIDX  lp_index       */
+typedef unsigned int            ULOOPIDX;/* ulp     SLOOPIDX ulp_index      */
+typedef signed int              WORD    ;/* lp      LOOPIDX  lp_index       */
+typedef unsigned int            UWORD   ;/* ulp     SLOOPIDX ulp_index      */
+
+typedef LOOPIDX                 LOOPINDEX; /* lp    LOOPIDX  lp_index       */
+typedef ULOOPIDX                ULOOPINDEX;/* ulp   SLOOPIDX ulp_index      */
+
+#define PLATFORM_INLINE __inline
+
+typedef struct xa_codec_opaque { WORD32 _; } *xa_codec_handle_t;
+
+typedef int XA_ERRORCODE;
+
+typedef XA_ERRORCODE xa_codec_func_t(xa_codec_handle_t p_xa_module_obj,
+				     WORD32            i_cmd,
+				     WORD32            i_idx,
+				     pVOID             pv_value);
+
+#endif /* __XA_TYPE_DEF_H__ */
diff --git a/hifi/xaf/host-apf/include/audio/xa_vorbis_dec_api.h b/hifi/xaf/host-apf/include/audio/xa_vorbis_dec_api.h
new file mode 100644
index 0000000..f99660f
--- /dev/null
+++ b/hifi/xaf/host-apf/include/audio/xa_vorbis_dec_api.h
@@ -0,0 +1,121 @@
+/*******************************************************************************
+* Copyright (C) 2018 Cadence Design Systems, Inc.
+* 
+* Permission is hereby granted, free of charge, to any person obtaining
+* a copy of this software and associated documentation files (the
+* "Software"), to use this Software with Cadence processor cores only and 
+* not with any other processors and platforms, subject to
+* the following conditions:
+* 
+* The above copyright notice and this permission notice shall be included
+* in all copies or substantial portions of the Software.
+* 
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+******************************************************************************/
+/*******************************************************************************
+*
+* NOTE, ANY CHANGES TO THIS FILE MAY AFFECT UNDERLYING AUDIO / SPEECH CODEC
+* LIBRARY COMPONENT FROM CADENCE DESIGN SYSTEMS, INC.
+*
+******************************************************************************/
+
+
+
+#ifndef __XA_VORBIS_DEC_API_H__
+#define __XA_VORBIS_DEC_API_H__
+
+#include <xa_memory_standards.h>
+
+/* vorbis_dec-specific configuration parameters */
+enum xa_config_param_vorbis_dec 
+{
+    XA_VORBISDEC_CONFIG_PARAM_SAMP_FREQ                         = 0,
+    XA_VORBISDEC_CONFIG_PARAM_NUM_CHANNELS                      = 1,
+    XA_VORBISDEC_CONFIG_PARAM_PCM_WDSZ                          = 2,
+    XA_VORBISDEC_CONFIG_PARAM_COMMENT_MEM_PTR                   = 3,
+    XA_VORBISDEC_CONFIG_PARAM_COMMENT_MEM_SIZE                  = 4,
+    XA_VORBISDEC_CONFIG_PARAM_GET_CUR_BITRATE                   = 5,
+    XA_VORBISDEC_CONFIG_PARAM_RAW_VORBIS_FILE_MODE              = 6,
+    XA_VORBISDEC_CONFIG_PARAM_RAW_VORBIS_LAST_PKT_GRANULE_POS   = 7,
+    XA_VORBISDEC_CONFIG_PARAM_OGG_MAX_PAGE_SIZE                 = 8,
+    XA_VORBISDEC_CONFIG_PARAM_RUNTIME_MEM                       = 9
+};
+
+/* commands */
+#include <xa_apicmd_standards.h>
+
+/* vorbis_dec-specific command types */
+/* (none) */
+
+/* error codes */
+#include <xa_error_standards.h>
+#define XA_CODEC_VORBIS_DEC 7
+
+/* vorbis_dec-specific error codes */
+
+/*****************************************************************************/
+/* Class 1: Configuration Errors                                     */
+/*****************************************************************************/
+/* Nonfatal Errors */
+enum xa_error_nonfatal_config_vorbis_dec
+{
+    XA_VORBISDEC_CONFIG_NONFATAL_GROUPED_STREAM = XA_ERROR_CODE(xa_severity_nonfatal, xa_class_config, XA_CODEC_VORBIS_DEC, 0),
+    XA_VORBISDEC_CONFIG_NONFATAL_BAD_PARAM = XA_ERROR_CODE(xa_severity_nonfatal, xa_class_config, XA_CODEC_VORBIS_DEC, 1)
+};
+
+/* Fatal Errors */
+enum xa_error_fatal_config_vorbis_dec
+{
+    XA_VORBISDEC_CONFIG_FATAL_BADHDR            = XA_ERROR_CODE(xa_severity_fatal, xa_class_config, XA_CODEC_VORBIS_DEC, 0),
+    XA_VORBISDEC_CONFIG_FATAL_NOTVORBIS         = XA_ERROR_CODE(xa_severity_fatal, xa_class_config, XA_CODEC_VORBIS_DEC, 1),
+    XA_VORBISDEC_CONFIG_FATAL_BADINFO           = XA_ERROR_CODE(xa_severity_fatal, xa_class_config, XA_CODEC_VORBIS_DEC, 2),
+    XA_VORBISDEC_CONFIG_FATAL_BADVERSION        = XA_ERROR_CODE(xa_severity_fatal, xa_class_config, XA_CODEC_VORBIS_DEC, 3),
+    XA_VORBISDEC_CONFIG_FATAL_BADBOOKS          = XA_ERROR_CODE(xa_severity_fatal, xa_class_config, XA_CODEC_VORBIS_DEC, 4),
+    XA_VORBISDEC_CONFIG_FATAL_CODEBOOK_DECODE   = XA_ERROR_CODE(xa_severity_fatal, xa_class_config, XA_CODEC_VORBIS_DEC, 5),
+    XA_VORBISDEC_CONFIG_FATAL_INVALID_PARAM     = XA_ERROR_CODE(xa_severity_fatal, xa_class_config, XA_CODEC_VORBIS_DEC, 6)
+};
+
+/*****************************************************************************/
+/* Class 2: Execution Errors                                                 */
+/*****************************************************************************/
+/* Nonfatal Errors */
+enum xa_error_nonfatal_execute_vorbis_dec
+{
+    XA_VORBISDEC_EXECUTE_NONFATAL_OV_HOLE = XA_ERROR_CODE(xa_severity_nonfatal, xa_class_execute, XA_CODEC_VORBIS_DEC, 0),
+    XA_VORBISDEC_EXECUTE_NONFATAL_OV_NOTAUDIO = XA_ERROR_CODE(xa_severity_nonfatal, xa_class_execute, XA_CODEC_VORBIS_DEC, 1),
+    XA_VORBISDEC_EXECUTE_NONFATAL_OV_BADPACKET = XA_ERROR_CODE(xa_severity_nonfatal, xa_class_execute, XA_CODEC_VORBIS_DEC, 2),
+    XA_VORBISDEC_EXECUTE_NONFATAL_OV_RUNTIME_DECODE_FLUSH_IN_PROGRESS = XA_ERROR_CODE(xa_severity_nonfatal, xa_class_execute, XA_CODEC_VORBIS_DEC, 3),
+    XA_VORBISDEC_EXECUTE_NONFATAL_OV_INVALID_STRM_POS = XA_ERROR_CODE(xa_severity_nonfatal, xa_class_execute, XA_CODEC_VORBIS_DEC, 4),
+    XA_VORBISDEC_EXECUTE_NONFATAL_OV_INSUFFICIENT_DATA = XA_ERROR_CODE(xa_severity_nonfatal, xa_class_execute, XA_CODEC_VORBIS_DEC, 5),
+    XA_VORBISDEC_EXECUTE_NONFATAL_OV_UNEXPECTED_IDENT_PKT_RECEIVED = XA_ERROR_CODE(xa_severity_nonfatal, xa_class_execute, XA_CODEC_VORBIS_DEC, 6),
+    XA_VORBISDEC_EXECUTE_NONFATAL_OV_UNEXPECTED_HEADER_PKT_RECEIVED = XA_ERROR_CODE(xa_severity_nonfatal, xa_class_execute, XA_CODEC_VORBIS_DEC, 7)
+};
+/* Fatal Errors */
+enum xa_error_fatal_execute_vorbis_dec
+{
+    XA_VORBISDEC_EXECUTE_FATAL_PERSIST_ALLOC                = XA_ERROR_CODE(xa_severity_fatal, xa_class_execute, XA_CODEC_VORBIS_DEC, 0),
+    XA_VORBISDEC_EXECUTE_FATAL_SCRATCH_ALLOC                = XA_ERROR_CODE(xa_severity_fatal, xa_class_execute, XA_CODEC_VORBIS_DEC, 1),
+    XA_VORBISDEC_EXECUTE_FATAL_CORRUPT_STREAM               = XA_ERROR_CODE(xa_severity_fatal, xa_class_execute, XA_CODEC_VORBIS_DEC, 2),
+    XA_VORBISDEC_EXECUTE_FATAL_INSUFFICIENT_INP_BUF_SIZE    = XA_ERROR_CODE(xa_severity_fatal, xa_class_execute, XA_CODEC_VORBIS_DEC, 3)
+};
+
+#include "xa_type_def.h"
+
+#ifdef __cplusplus
+    extern "C" {
+#endif /* __cplusplus */
+
+    xa_codec_func_t xa_vorbis_dec;
+
+#ifdef __cplusplus
+    }
+#endif /* __cplusplus */
+
+#endif /* __XA_VORBIS_DEC_API_H__ */
diff --git a/hifi/xaf/host-apf/include/os/android/xf-osal.h b/hifi/xaf/host-apf/include/os/android/xf-osal.h
new file mode 100644
index 0000000..6286405
--- /dev/null
+++ b/hifi/xaf/host-apf/include/os/android/xf-osal.h
@@ -0,0 +1,215 @@
+/*******************************************************************************
+* Copyright (C) 2018 Cadence Design Systems, Inc.
+* 
+* Permission is hereby granted, free of charge, to any person obtaining
+* a copy of this software and associated documentation files (the
+* "Software"), to use this Software with Cadence processor cores only and 
+* not with any other processors and platforms, subject to
+* the following conditions:
+* 
+* The above copyright notice and this permission notice shall be included
+* in all copies or substantial portions of the Software.
+* 
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+******************************************************************************/
+
+#ifndef __XF_H
+#error  "xf-osal.h mustn't be included directly"
+#endif
+
+/*******************************************************************************
+ * Includes
+ ******************************************************************************/
+
+#include <pthread.h>
+#include <fcntl.h>
+#include <limits.h>
+#include <sys/mman.h>
+#include <sys/ioctl.h>
+#include <sys/time.h>
+#include <log/log.h>
+
+/*******************************************************************************
+ * Tracing primitive
+ ******************************************************************************/
+
+#define __xf_puts(str)                  \
+    ALOG(LOG_INFO, "PROXY", "%s", (str))
+
+/*******************************************************************************
+ * Lock operation
+ ******************************************************************************/
+
+/* ...lock definition */
+typedef pthread_mutex_t     xf_lock_t;
+
+/* ...lock initialization */
+static inline void __xf_lock_init(xf_lock_t *lock)
+{
+    pthread_mutex_init(lock, NULL);
+}
+
+/* ...lock acquisition */
+static inline void __xf_lock(xf_lock_t *lock)
+{
+    pthread_mutex_lock(lock);
+}
+
+/* ...lock release */
+static inline void __xf_unlock(xf_lock_t *lock)
+{
+    pthread_mutex_unlock(lock);
+}
+
+/*******************************************************************************
+ * Waiting object
+ ******************************************************************************/
+
+/* ...waiting object handle */
+typedef struct __xf_wait
+{
+    /* ...conditional variable */
+    pthread_cond_t      wait;
+    
+    /* ...waiting mutex */
+    pthread_mutex_t     mutex;
+
+}   xf_wait_t;
+
+/* ...initialize waiting object */
+static inline void __xf_wait_init(xf_wait_t *w)
+{
+    pthread_cond_init(&w->wait, NULL);
+    pthread_mutex_init(&w->mutex, NULL);
+}
+
+/* ...prepare to waiting */
+static inline void __xf_wait_prepare(xf_wait_t *w)
+{
+    pthread_mutex_lock(&w->mutex);
+}
+
+#define __xf_wait_prepare(w)                    \
+({                                              \
+    TRACE(1, _x("prepare-wait"));               \
+    (__xf_wait_prepare)(w);                     \
+})    
+    
+/* ...wait until event is signalled */
+static inline int __xf_wait(xf_wait_t *w, u32 timeout)
+{
+    struct timespec ts;
+    struct timeval  tv;
+    int             r;
+
+    /* ...wait with or without timeout (communication mutex is taken) */
+    if (!timeout)
+    {
+        r = -pthread_cond_wait(&w->wait, &w->mutex);
+    }
+    else
+    {
+        /* ...get current time */        
+        gettimeofday(&tv, NULL);
+
+        /* ...set absolute timeout */
+        ts.tv_sec = tv.tv_sec + timeout / 1000;
+        ts.tv_nsec = tv.tv_usec * 1000 + (timeout % 1000) * 1000000;
+        (ts.tv_nsec >= 1000000000 ? ts.tv_sec++, ts.tv_nsec -= 1000000000 : 0);
+        
+        /* ...wait conditionally with absolute timeout*/
+        r = -pthread_cond_timedwait(&w->wait, &w->mutex, &ts);
+    }
+
+    /* ...leave with communication mutex taken */
+    return r;    
+}
+
+#define __xf_wait(w, timeout)                   \
+({                                              \
+    int  __r;                                   \
+    TRACE(1, _x("wait"));                       \
+    __r = (__xf_wait)(w, timeout);              \
+    TRACE(1, _x("resume"));                     \
+    __r;                                        \
+})    
+
+/* ...wake up waiting handle */
+static inline void __xf_wakeup(xf_wait_t *w)
+{
+    /* ...take communication mutex before signaling */
+    pthread_mutex_lock(&w->mutex);
+
+    /* ...signalling will resume waiting thread */
+    pthread_cond_signal(&w->wait);
+
+    /* ...assure that waiting task will not resume until we say this - is that really needed? - tbd */
+    pthread_mutex_unlock(&w->mutex);
+}
+
+#define __xf_wakeup(w)                          \
+({                                              \
+    TRACE(1, _x("wakeup"));                     \
+    (__xf_wakeup)(w);                           \
+})    
+
+/* ...complete waiting operation */
+static inline void __xf_wait_complete(xf_wait_t *w)
+{
+    pthread_mutex_unlock(&w->mutex);
+}
+
+#define __xf_wait_complete(w)                   \
+({                                              \
+    TRACE(1, _x("wait-complete"));              \
+    (__xf_wait_complete)(w);                    \
+})    
+
+/*******************************************************************************
+ * Thread support
+ ******************************************************************************/
+
+/* ...thread handle definition */
+typedef pthread_t           xf_thread_t;
+
+/* ...thread creation */
+static inline int __xf_thread_create(xf_thread_t *thread, void * (*f)(void *), void *arg)
+{
+    pthread_attr_t      attr;
+    int                 r;
+    
+    /* ...initialize thread attributes - joinable with minimal stack */
+    pthread_attr_init(&attr);
+    pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_JOINABLE);
+    pthread_attr_setstacksize(&attr, PTHREAD_STACK_MIN);
+
+    /* ...create proxy asynchronous thread managing SHMEM */
+    r = -pthread_create(thread, &attr, f, arg);
+    
+    /* ...destroy thread attributes */
+    pthread_attr_destroy(&attr);
+
+    return r;
+}
+
+/* ...terminate thread operation */
+static inline int __xf_thread_destroy(xf_thread_t *thread)
+{
+    void   *r;
+
+    /* ...tell the thread to terminate */
+    pthread_kill(*thread,SIGUSR1);
+
+    /* ...wait until thread terminates */
+    pthread_join(*thread, &r);
+
+    /* ...return final status */
+    return (int)(intptr_t)r;
+}
diff --git a/hifi/xaf/host-apf/include/os/xos/xf-osal.h b/hifi/xaf/host-apf/include/os/xos/xf-osal.h
new file mode 100644
index 0000000..c346800
--- /dev/null
+++ b/hifi/xaf/host-apf/include/os/xos/xf-osal.h
@@ -0,0 +1,206 @@
+/*******************************************************************************
+* Copyright (C) 2018 Cadence Design Systems, Inc.
+* 
+* Permission is hereby granted, free of charge, to any person obtaining
+* a copy of this software and associated documentation files (the
+* "Software"), to use this Software with Cadence processor cores only and 
+* not with any other processors and platforms, subject to
+* the following conditions:
+* 
+* The above copyright notice and this permission notice shall be included
+* in all copies or substantial portions of the Software.
+* 
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+******************************************************************************/
+
+#ifndef __XF_H
+#error  "xf-osal.h mustn't be included directly"
+#endif
+
+/*******************************************************************************
+ * Includes
+ ******************************************************************************/
+#include "xos.h"
+
+/*******************************************************************************
+ * Tracing primitive
+ ******************************************************************************/
+
+#define __xf_puts(str)                  \
+    puts((str))
+
+/*******************************************************************************
+ * Lock operation
+ ******************************************************************************/
+
+/* ...lock definition */
+typedef XosMutex     xf_lock_t;
+
+/* ...lock initialization */
+static inline void __xf_lock_init(xf_lock_t *lock)
+{
+    xos_mutex_create(lock, XOS_MUTEX_WAIT_PRIORITY, 0);
+}
+
+/* ...lock acquisition */
+static inline void __xf_lock(xf_lock_t *lock)
+{
+    xos_mutex_lock(lock);
+}
+
+/* ...lock release */
+static inline void __xf_unlock(xf_lock_t *lock)
+{
+    xos_mutex_unlock(lock);
+}
+
+/*******************************************************************************
+ * Waiting object
+ ******************************************************************************/
+
+#if 0
+/* ...waiting object handle */
+typedef struct __xf_wait
+{
+    /* ...conditional variable */
+    pthread_cond_t      wait;
+    
+    /* ...waiting mutex */
+    pthread_mutex_t     mutex;
+
+}   xf_wait_t;
+
+/* ...initialize waiting object */
+static inline void __xf_wait_init(xf_wait_t *w)
+{
+    pthread_cond_init(&w->wait, NULL);
+    pthread_mutex_init(&w->mutex, NULL);
+}
+
+/* ...prepare to waiting */
+static inline void __xf_wait_prepare(xf_wait_t *w)
+{
+    pthread_mutex_lock(&w->mutex);
+}
+
+#define __xf_wait_prepare(w)                    \
+({                                              \
+    TRACE(1, _x("prepare-wait"));               \
+    (__xf_wait_prepare)(w);                     \
+})    
+    
+/* ...wait until event is signalled */
+static inline int __xf_wait(xf_wait_t *w, u32 timeout)
+{
+    struct timespec ts;
+    struct timeval  tv;
+    int             r;
+
+    /* ...wait with or without timeout (communication mutex is taken) */
+    if (!timeout)
+    {
+        r = -pthread_cond_wait(&w->wait, &w->mutex);
+    }
+    else
+    {
+        /* ...get current time */        
+        gettimeofday(&tv, NULL);
+
+        /* ...set absolute timeout */
+        ts.tv_sec = tv.tv_sec + timeout / 1000;
+        ts.tv_nsec = tv.tv_usec * 1000 + (timeout % 1000) * 1000000;
+        (ts.tv_nsec >= 1000000000 ? ts.tv_sec++, ts.tv_nsec -= 1000000000 : 0);
+        
+        /* ...wait conditionally with absolute timeout*/
+        r = -pthread_cond_timedwait(&w->wait, &w->mutex, &ts);
+    }
+
+    /* ...leave with communication mutex taken */
+    return r;    
+}
+
+#define __xf_wait(w, timeout)                   \
+({                                              \
+    int  __r;                                   \
+    TRACE(1, _x("wait"));                       \
+    __r = (__xf_wait)(w, timeout);              \
+    TRACE(1, _x("resume"));                     \
+    __r;                                        \
+})    
+
+/* ...wake up waiting handle */
+static inline void __xf_wakeup(xf_wait_t *w)
+{
+    /* ...take communication mutex before signaling */
+    pthread_mutex_lock(&w->mutex);
+
+    /* ...signalling will resume waiting thread */
+    pthread_cond_signal(&w->wait);
+
+    /* ...assure that waiting task will not resume until we say this - is that really needed? - tbd */
+    pthread_mutex_unlock(&w->mutex);
+}
+
+#define __xf_wakeup(w)                          \
+({                                              \
+    TRACE(1, _x("wakeup"));                     \
+    (__xf_wakeup)(w);                           \
+})    
+
+/* ...complete waiting operation */
+static inline void __xf_wait_complete(xf_wait_t *w)
+{
+    pthread_mutex_unlock(&w->mutex);
+}
+
+#define __xf_wait_complete(w)                   \
+({                                              \
+    TRACE(1, _x("wait-complete"));              \
+    (__xf_wait_complete)(w);                    \
+})    
+#endif
+
+/*******************************************************************************
+ * Thread support
+ ******************************************************************************/
+
+/* ...thread handle definition */
+typedef XosThread           xf_thread_t;
+typedef XosThreadFunc       xf_entry_t;
+
+/* ...thread creation */
+static inline int __xf_thread_create(xf_thread_t *thread, xf_entry_t *f, 
+                                     void *arg, const char *name, void * stack, 
+                                     unsigned int stack_size, int priority)
+{
+    int    r;
+    
+    /* ...create proxy asynchronous thread managing SHMEM */
+    r = xos_thread_create(thread, 0, f, arg, name, stack, stack_size, priority, 0, 0);
+    
+    return r;
+}
+
+/* ...terminate thread operation */
+static inline int __xf_thread_destroy(xf_thread_t *thread)
+{
+    int    r;
+    
+    /* ...wait until thread terminates */
+    /* v-tbd - avoid infinite wait for join */
+    //xos_thread_join(thread, &r); 
+    
+    /* ...delete thread, free up TCB, stack */
+    r = xos_thread_delete(thread);
+    
+    /* ...return final status */
+    return r;
+}
+
diff --git a/hifi/xaf/host-apf/include/sys/fio/xf-config.h b/hifi/xaf/host-apf/include/sys/fio/xf-config.h
new file mode 100644
index 0000000..2e1d4c6
--- /dev/null
+++ b/hifi/xaf/host-apf/include/sys/fio/xf-config.h
@@ -0,0 +1,36 @@
+/*******************************************************************************
+* Copyright (C) 2018 Cadence Design Systems, Inc.
+* 
+* Permission is hereby granted, free of charge, to any person obtaining
+* a copy of this software and associated documentation files (the
+* "Software"), to use this Software with Cadence processor cores only and 
+* not with any other processors and platforms, subject to
+* the following conditions:
+* 
+* The above copyright notice and this permission notice shall be included
+* in all copies or substantial portions of the Software.
+* 
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+******************************************************************************/
+
+/* ...number of DSP cores */
+#define XF_CFG_CORES_NUM                4
+
+/* ...maximal number of clients supported by proxy */
+#define XF_CFG_PROXY_MAX_CLIENTS        256
+
+/* ...size of the shared memory pool (in bytes) */
+#define XF_CFG_REMOTE_IPC_POOL_SIZE     (256 << 10)
+
+/* ...size of the component(DSP) local memory pool (in bytes) */
+#define XF_CFG_LOCAL_POOL_SIZE          (1024<< 10)
+
+/* ...alignment for shared buffers */
+#define XF_PROXY_ALIGNMENT              64
diff --git a/hifi/xaf/host-apf/include/sys/fio/xf-hal.h b/hifi/xaf/host-apf/include/sys/fio/xf-hal.h
new file mode 100644
index 0000000..15a82b0
--- /dev/null
+++ b/hifi/xaf/host-apf/include/sys/fio/xf-hal.h
@@ -0,0 +1,34 @@
+/*******************************************************************************
+* Copyright (C) 2018 Cadence Design Systems, Inc.
+* 
+* Permission is hereby granted, free of charge, to any person obtaining
+* a copy of this software and associated documentation files (the
+* "Software"), to use this Software with Cadence processor cores only and 
+* not with any other processors and platforms, subject to
+* the following conditions:
+* 
+* The above copyright notice and this permission notice shall be included
+* in all copies or substantial portions of the Software.
+* 
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+******************************************************************************/
+
+#ifndef __XF_H
+#error "xf-hal.h mustn't be included directly"
+#endif
+
+/*******************************************************************************
+ * Includes
+ ******************************************************************************/
+
+/* ...primitive types */
+#include "xf-types.h"
+
+/* ...anything else? - tbd */
diff --git a/hifi/xaf/host-apf/include/sys/fio/xf-ipc.h b/hifi/xaf/host-apf/include/sys/fio/xf-ipc.h
new file mode 100644
index 0000000..2ee859a
--- /dev/null
+++ b/hifi/xaf/host-apf/include/sys/fio/xf-ipc.h
@@ -0,0 +1,127 @@
+/*******************************************************************************
+* Copyright (C) 2018 Cadence Design Systems, Inc.
+* 
+* Permission is hereby granted, free of charge, to any person obtaining
+* a copy of this software and associated documentation files (the
+* "Software"), to use this Software with Cadence processor cores only and 
+* not with any other processors and platforms, subject to
+* the following conditions:
+* 
+* The above copyright notice and this permission notice shall be included
+* in all copies or substantial portions of the Software.
+* 
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+******************************************************************************/
+
+#ifndef __XF_H
+#error "xf-ipc.h mustn't be included directly"
+#endif
+
+/*******************************************************************************
+ * Types definitions
+ ******************************************************************************/
+
+/* ...proxy IPC data */
+typedef struct xf_proxy_ipc_data
+{
+    /* ...shared memory buffer pointer */
+    void                   *shmem;
+
+    /* ...file descriptor */
+    int                     fd;
+
+    /* ...pipe for asynchronous response delivery */
+    int                     pipe[2];
+    
+}   xf_proxy_ipc_data_t;
+
+/*******************************************************************************
+ * Helpers for asynchronous response delivery
+ ******************************************************************************/
+
+#define xf_proxy_ipc_response_put(ipc, msg) \
+    (write((ipc)->pipe[1], (msg), sizeof(*(msg))) == sizeof(*(msg)) ? 0 : -errno)
+
+#define xf_proxy_ipc_response_get(ipc, msg) \
+    (read((ipc)->pipe[0], (msg), sizeof(*(msg))) == sizeof(*(msg)) ? 0 : -errno)
+
+/*******************************************************************************
+ * Shared memory translation
+ ******************************************************************************/
+
+/* ...translate proxy shared address into local virtual address */
+static inline void * xf_ipc_a2b(xf_proxy_ipc_data_t *ipc, u32 address)
+{
+    if (address < XF_CFG_REMOTE_IPC_POOL_SIZE)
+        return (unsigned char *) ipc->shmem + address;
+    else if (address == XF_PROXY_NULL)
+        return NULL;
+    else
+        return (void *) -1;
+}
+
+/* ...translate local virtual address into shared proxy address */
+static inline u32 xf_ipc_b2a(xf_proxy_ipc_data_t *ipc, void *b)
+{
+    u32     a;
+    
+    if (b == NULL)
+        return XF_PROXY_NULL;
+    if ((a = (u32)((u8 *)b - (u8 *)ipc->shmem)) < XF_CFG_REMOTE_IPC_POOL_SIZE)
+        return a;
+    else
+        return XF_PROXY_BADADDR;
+}
+
+/*******************************************************************************
+ * Component inter-process communication
+ ******************************************************************************/
+
+typedef struct xf_ipc_data
+{
+    /* ...asynchronous response delivery pipe */
+    int                 pipe[2];
+    
+}   xf_ipc_data_t;
+
+/*******************************************************************************
+ * Helpers for asynchronous response delivery
+ ******************************************************************************/
+
+#define xf_ipc_response_put(ipc, msg)       \
+    (write((ipc)->pipe[1], (msg), sizeof(*(msg))) == sizeof(*(msg)) ? 0 : -errno)
+
+#define xf_ipc_response_get(ipc, msg)       \
+    (read((ipc)->pipe[0], (msg), sizeof(*(msg))) == sizeof(*(msg)) ? 0 : -errno)
+
+#define xf_ipc_data_init(ipc)               \
+    (pipe((ipc)->pipe) == 0 ? 0 : -errno)
+
+#define xf_ipc_data_destroy(ipc)            \
+    (close((ipc)->pipe[0]), close((ipc)->pipe[1]))
+
+/*******************************************************************************
+* API functions
+ ******************************************************************************/
+
+/* ...send asynchronous command */
+extern int  xf_ipc_send(xf_proxy_ipc_data_t *ipc, xf_proxy_msg_t *msg, void *b);
+
+/* ...wait for response from remote proxy */
+extern int  xf_ipc_wait(xf_proxy_ipc_data_t *ipc, u32 timeout);
+
+/* ...receive response from IPC layer */
+extern int  xf_ipc_recv(xf_proxy_ipc_data_t *ipc, xf_proxy_msg_t *msg, void **b);
+
+/* ...open proxy interface on proper DSP partition */
+extern int  xf_ipc_open(xf_proxy_ipc_data_t *proxy, u32 core, void *p_shmem);
+
+/* ...close proxy handle */
+extern void xf_ipc_close(xf_proxy_ipc_data_t *proxy, u32 core);
diff --git a/hifi/xaf/host-apf/include/sys/fio/xf-runtime.h b/hifi/xaf/host-apf/include/sys/fio/xf-runtime.h
new file mode 100644
index 0000000..9cad95f
--- /dev/null
+++ b/hifi/xaf/host-apf/include/sys/fio/xf-runtime.h
@@ -0,0 +1,35 @@
+/*******************************************************************************
+* Copyright (C) 2018 Cadence Design Systems, Inc.
+* 
+* Permission is hereby granted, free of charge, to any person obtaining
+* a copy of this software and associated documentation files (the
+* "Software"), to use this Software with Cadence processor cores only and 
+* not with any other processors and platforms, subject to
+* the following conditions:
+* 
+* The above copyright notice and this permission notice shall be included
+* in all copies or substantial portions of the Software.
+* 
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+******************************************************************************/
+
+#ifndef __XF_H
+#error "xf-runtime.h mustn't be included directly"
+#endif
+
+/*******************************************************************************
+ * Includes
+ ******************************************************************************/
+
+/* ...platform HAL layer */
+#include "xf-hal.h"
+
+/* ...OS abstraction layer */
+#include "xf-osal.h"
diff --git a/hifi/xaf/host-apf/include/sys/fio/xf-types.h b/hifi/xaf/host-apf/include/sys/fio/xf-types.h
new file mode 100644
index 0000000..a610c8e
--- /dev/null
+++ b/hifi/xaf/host-apf/include/sys/fio/xf-types.h
@@ -0,0 +1,88 @@
+/*******************************************************************************
+* Copyright (C) 2018 Cadence Design Systems, Inc.
+* 
+* Permission is hereby granted, free of charge, to any person obtaining
+* a copy of this software and associated documentation files (the
+* "Software"), to use this Software with Cadence processor cores only and 
+* not with any other processors and platforms, subject to
+* the following conditions:
+* 
+* The above copyright notice and this permission notice shall be included
+* in all copies or substantial portions of the Software.
+* 
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+******************************************************************************/
+
+#ifndef __XF_H
+#error "xf-types.h mustn't be included directly"
+#endif
+
+/*******************************************************************************
+ * Standard includes
+ ******************************************************************************/
+
+#ifndef _GNU_SOURCE
+#define _GNU_SOURCE
+#endif
+
+#include <stdarg.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdio.h>
+#include <assert.h>
+#include <errno.h>
+
+#include <unistd.h>
+#include <fcntl.h>
+#include <pthread.h>
+#include <signal.h>
+#include <limits.h>
+#include <sys/mman.h>
+#include <sys/ioctl.h>
+#include <sys/time.h>
+
+/*******************************************************************************
+ * Primitive types
+ ******************************************************************************/
+
+typedef uint32_t        u32;
+typedef int32_t         s32;
+typedef uint16_t        u16;
+typedef int16_t         s16;
+typedef uint8_t         u8;
+typedef int8_t          s8;
+
+/*******************************************************************************
+ * Macros definitions
+ ******************************************************************************/
+
+/* ...NULL-address specification */
+#define XF_PROXY_NULL           (~0U)
+
+/* ...invalid proxy address */
+#define XF_PROXY_BADADDR        XF_CFG_REMOTE_IPC_POOL_SIZE
+
+/*******************************************************************************
+ * Auxiliary helpers
+ ******************************************************************************/
+
+/* ...next power-of-two calculation */
+#define xf_next_power_of_two(v)     __xf_power_of_two_1((v) - 1)
+#define __xf_power_of_two_1(v)      __xf_power_of_two_2((v) | ((v) >> 1))
+#define __xf_power_of_two_2(v)      __xf_power_of_two_3((v) | ((v) >> 2))
+#define __xf_power_of_two_3(v)      __xf_power_of_two_4((v) | ((v) >> 4))
+#define __xf_power_of_two_4(v)      __xf_power_of_two_5((v) | ((v) >> 8))
+#define __xf_power_of_two_5(v)      __xf_power_of_two_6((v) | ((v) >> 16))
+#define __xf_power_of_two_6(v)      ((v) + 1)
+
+/* ...check if non-zero value is a power-of-two */
+#define xf_is_power_of_two(v)       (((v) & ((v) - 1)) == 0)
+
diff --git a/hifi/xaf/host-apf/include/xaf-api.h b/hifi/xaf/host-apf/include/xaf-api.h
new file mode 100644
index 0000000..5cebb43
--- /dev/null
+++ b/hifi/xaf/host-apf/include/xaf-api.h
@@ -0,0 +1,139 @@
+/*******************************************************************************
+* Copyright (C) 2018 Cadence Design Systems, Inc.
+* 
+* Permission is hereby granted, free of charge, to any person obtaining
+* a copy of this software and associated documentation files (the
+* "Software"), to use this Software with Cadence processor cores only and 
+* not with any other processors and platforms, subject to
+* the following conditions:
+* 
+* The above copyright notice and this permission notice shall be included
+* in all copies or substantial portions of the Software.
+* 
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+******************************************************************************/
+
+
+/* ...number of max input buffers */
+#define XAF_MAX_INBUFS                      2
+#define XAF_INBUF_SIZE                      8192
+
+typedef enum {
+    XAF_DECODER         = 0,
+    XAF_ENCODER         = 1,
+    XAF_MIXER           = 2,
+    XAF_PRE_PROC        = 3,
+    XAF_POST_PROC       = 4,
+} xaf_comp_type;
+
+typedef enum {
+    XAF_STARTING        = 0,
+    XAF_INIT_DONE       = 1,
+    XAF_NEED_INPUT      = 2,
+    XAF_OUTPUT_READY    = 3,
+    XAF_EXEC_DONE       = 4,
+} xaf_comp_status;
+
+typedef enum {
+    XAF_START_FLAG          = 1,
+    XAF_EXEC_FLAG           = 2,
+    XAF_INPUT_OVER_FLAG     = 3,
+    XAF_INPUT_READY_FLAG    = 4,
+    XAF_NEED_OUTPUT_FLAG    = 5,
+} xaf_comp_flag;
+
+typedef enum {
+    XAF_NO_ERROR        =  0,
+    XAF_PTR_ERROR       = -1,
+    XAF_INVALID_VALUE   = -2,
+    XAF_ROUTING_ERROR   = -3,
+    /*XAF_XOS_ERROR       = -4,*/
+    XAF_API_ERR         = -5,
+} XAF_ERR_CODE;
+
+typedef enum {
+    XAF_MEM_ID_DEV  = 0,
+    XAF_MEM_ID_COMP = 1,
+} XAF_MEM_ID;
+
+/* structure for component memory sizes */
+typedef struct xaf_mem_size_s{
+    u32 persist;
+    u32 scratch;
+    u32 input;
+    u32 output;
+}xaf_mem_size_t;
+
+/* structure for host-side utility handles */
+typedef struct xaf_ap_utils_s{
+  int            xf_cfg_remote_ipc_pool_size;
+  xaf_mem_size_t mem_size;
+}xaf_ap_utils_t;
+
+typedef struct xaf_format_s {
+    u32             sample_rate;
+    u32             channels;
+    u32             pcm_width;
+    u32             input_length;
+    u32             output_length;
+} xaf_format_t;
+
+#ifndef XAF_HOSTLESS
+typedef struct xaf_info_s {
+    void *          buf;
+    u32             length;
+} xaf_info_t;
+#endif
+
+XAF_ERR_CODE xaf_adev_open(void **pp_adev, s32 audio_frmwk_buf_size, s32 audio_comp_buf_size, xaf_mem_malloc_fxn_t mm_malloc, xaf_mem_free_fxn_t mm_free);
+XAF_ERR_CODE xaf_adev_close(void *adev_ptr, xaf_comp_flag flag);
+
+XAF_ERR_CODE xaf_comp_create(void* p_adev, void **p_comp, xf_id_t comp_id, u32 ninbuf, u32 noutbuf, void *pp_inbuf[], xaf_comp_type comp_type);
+XAF_ERR_CODE xaf_comp_delete(void* p_comp);
+XAF_ERR_CODE xaf_comp_set_config(void *p_comp, s32 num_param, s32 *p_param);
+XAF_ERR_CODE xaf_comp_get_config(void *p_comp, s32 num_param, s32 *p_param);
+XAF_ERR_CODE xaf_comp_process(void *p_adev, void *p_comp, void *p_buf, u32 length, xaf_comp_flag flag);
+XAF_ERR_CODE xaf_connect(void *p_src, void *p_dest, s32 num_buf);
+
+/* Not available in this version yet.
+XAF_ERR_CODE xaf_disconnect(xaf_comp_t *p_comp);
+*/
+
+XAF_ERR_CODE xaf_comp_get_status(void *p_adev, void *p_comp, xaf_comp_status *p_status, xaf_info_t *p_info);
+
+/* ...check null pointer */ 
+#define XAF_CHK_PTR(ptr)                                     \
+({                                                          \
+    int __ret;                                              \
+                                                            \
+    if ((__ret = (int)(ptr)) == 0)                          \
+    {                                                       \
+        TRACE(ERROR, _x("Null pointer error: %d"), __ret);  \
+        return XAF_PTR_ERROR;                               \
+    }                                                       \
+    __ret;                                                  \
+})
+
+/* ...check range */
+#define XAF_CHK_RANGE(val, min, max)                         \
+({                                                          \
+    int __ret = val;                                        \
+                                                            \
+    if ((__ret < (int)min) || (__ret > (int)max))           \
+    {                                                       \
+        TRACE(ERROR, _x("Invalid value: %d"), __ret);       \
+        return XAF_INVALID_VALUE;                           \
+    }                                                       \
+    __ret;                                                  \
+})
+
+
+
+
diff --git a/hifi/xaf/host-apf/include/xaf-structs.h b/hifi/xaf/host-apf/include/xaf-structs.h
new file mode 100644
index 0000000..f632600
--- /dev/null
+++ b/hifi/xaf/host-apf/include/xaf-structs.h
@@ -0,0 +1,82 @@
+/*******************************************************************************
+* Copyright (C) 2018 Cadence Design Systems, Inc.
+* 
+* Permission is hereby granted, free of charge, to any person obtaining
+* a copy of this software and associated documentation files (the
+* "Software"), to use this Software with Cadence processor cores only and 
+* not with any other processors and platforms, subject to
+* the following conditions:
+* 
+* The above copyright notice and this permission notice shall be included
+* in all copies or substantial portions of the Software.
+* 
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+******************************************************************************/
+
+/* ...size of auxiliary pool for communication with HiFi */
+#define XAF_AUX_POOL_SIZE                   32
+
+/* ...length of auxiliary pool messages */
+#define XAF_AUX_POOL_MSG_LENGTH             128
+#define XAF_MAX_CONFIG_PARAMS               (XAF_AUX_POOL_MSG_LENGTH >> 3)
+
+typedef struct xaf_comp xaf_comp_t;
+
+struct xaf_comp {
+    xf_handle_t     handle;     
+
+    u32             inp_routed;
+    u32             out_routed;
+    u32             inp_ports;
+    u32             out_ports;
+    u32             init_done;
+    u32             pending_resp;
+    u32             expect_out_cmd;
+    u32             input_over;
+
+    xaf_comp_type   comp_type;
+    xaf_comp_status comp_status;
+    u32             start_cmd_issued;
+    u32             exec_cmd_issued;
+    void            *start_buf;
+
+    xaf_format_t    inp_format;
+    xaf_format_t    out_format;
+
+    xf_pool_t       *inpool;
+    xf_pool_t       *outpool;
+    u32             noutbuf;
+
+    xaf_comp_t      *next;
+
+    u32             ninbuf;
+    void            *p_adev;
+    //xaf_comp_state  comp_state;
+    void           *comp_ptr; 
+};
+
+typedef struct xaf_adev_s {
+    xf_proxy_t      proxy;
+    xaf_comp_t      *comp_chain;  
+
+    u32   n_comp;
+    void *adev_ptr;
+    void *p_dspMem;
+    void *p_apMem;
+    void *p_dspLocalBuff;
+    void *p_apSharedMem;
+
+    xaf_ap_utils_t  *p_ap_utils; //host-side utility structure handle
+    void  *(*pxf_mem_malloc_fxn)(s32, s32);
+    void  (*pxf_mem_free_fxn)(void *,s32);
+    //xaf_adev_state  adev_state;
+
+} xaf_adev_t;
+
diff --git a/hifi/xaf/host-apf/include/xf-debug.h b/hifi/xaf/host-apf/include/xf-debug.h
new file mode 100644
index 0000000..8317230
--- /dev/null
+++ b/hifi/xaf/host-apf/include/xf-debug.h
@@ -0,0 +1,194 @@
+/*******************************************************************************
+* Copyright (C) 2018 Cadence Design Systems, Inc.
+* 
+* Permission is hereby granted, free of charge, to any person obtaining
+* a copy of this software and associated documentation files (the
+* "Software"), to use this Software with Cadence processor cores only and 
+* not with any other processors and platforms, subject to
+* the following conditions:
+* 
+* The above copyright notice and this permission notice shall be included
+* in all copies or substantial portions of the Software.
+* 
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+******************************************************************************/
+
+#ifndef __XF_H
+#error  "xf-debug.h mustn't be included directly"
+#endif
+
+/*******************************************************************************
+ * Auxiliary macros (put into "xf-types.h"?)
+ ******************************************************************************/
+
+#ifndef offset_of
+#define offset_of(type, member)         \
+    ((int)(intptr_t)&(((const type *)(0))->member))
+#endif
+
+#ifndef container_of
+#define container_of(ptr, type, member) \
+    ((type *)((void *)(ptr) - offset_of(type, member)))
+#endif 
+
+/*******************************************************************************
+ * Bug check for constant conditions (file scope)
+ ******************************************************************************/
+
+#define __C_BUG(n)      __C_BUG2(n)
+#define __C_BUG2(n)     __c_bug_##n
+#define C_BUG(expr)     typedef char __C_BUG(__LINE__)[(expr) ? -1 : 1]
+
+/*******************************************************************************
+ * Compilation-time types control
+ ******************************************************************************/
+
+#if XF_DEBUG
+#define __C_TYPE_CONTROL(d, type)       ((void) ((d) != (type*) 0))
+#else
+#define __C_TYPE_CONTROL(d, type)       ((void) 0)
+#endif
+
+/*******************************************************************************
+ * Unused variable
+ ******************************************************************************/
+
+#define C_UNUSED(v)                     (void)(0 ? (v) = (v), 1 : 0)
+
+/*******************************************************************************
+ * Auxiliary macros
+ ******************************************************************************/
+
+/* ...define a stub for unused declarator */
+#define __xf_stub(tag, line)            __xf_stub2(tag, line)
+#define __xf_stub2(tag, line)           typedef int __xf_##tag##_##line
+
+/* ...convert anything into string */
+#define __xf_string(x)                  __xf_string2(x)
+#define __xf_string2(x)                 #x
+
+/*******************************************************************************
+ * Tracing facility
+ ******************************************************************************/
+
+#if XF_TRACE
+
+/* ...tracing to communication processor */
+extern int  xf_trace(const char *format, ...);
+
+/* ...tracing facility initialization */
+extern void xf_trace_init(const char *banner);
+
+/* ...initialize tracing facility */
+#define TRACE_INIT(banner)              (xf_trace_init(banner))
+
+/* ...trace tag definition */
+#define TRACE_TAG(tag, on)              enum { __xf_trace_##tag = on }
+
+/* ...check if the trace tag is enabled */
+#define TRACE_CFG(tag)                  (__xf_trace_##tag)
+
+/* ...tagged tracing primitive */
+#define TRACE(tag, fmt, ...)            (void)(__xf_trace_##tag ? __xf_trace(tag, __xf_format##fmt, ## __VA_ARGS__), 1 : 0)
+
+/*******************************************************************************
+ * Tagged tracing formats
+ ******************************************************************************/
+
+/* ...tracing primitive */
+#define __xf_trace(tag, fmt, ...)       \
+    ({ __attribute__((unused)) const char *__xf_tag = #tag; xf_trace(fmt, ## __VA_ARGS__); })
+
+/* ...just a format string */
+#define __xf_format_n(fmt)              fmt
+
+/* ...module tag and trace tag shown */
+#define __xf_format_b(fmt)              "[%s.%s] " fmt, __xf_string(MODULE_TAG), __xf_tag
+
+/* ...module tag, trace tag, file name and line shown */
+#define __xf_format_x(fmt)              "[%s.%s] - %s@%d - " fmt,  __xf_string(MODULE_TAG), __xf_tag, __FILE__, __LINE__
+
+/*******************************************************************************
+ * Globally defined tags
+ ******************************************************************************/
+
+/* ...unconditionally OFF */
+TRACE_TAG(0, 0);
+
+/* ...unconditionally ON */
+TRACE_TAG(1, 1);
+
+/* ...error output - on by default */
+TRACE_TAG(ERROR, 1);
+
+#else
+
+#define TRACE_INIT(banner)              (void)0
+#define TRACE_TAG(tag, on)              __xf_stub(trace_##tag, __LINE__)
+#define TRACE(tag, fmt, ...)            (void)0
+#define __xf_trace(tag, fmt, ...)       (void)0
+
+#endif  /* XF_TRACE */
+
+/*******************************************************************************
+ * Bugchecks
+ ******************************************************************************/
+
+#if XF_DEBUG
+
+/* ...run-time bugcheck */
+#define BUG(cond, fmt, ...)                                     \
+do                                                              \
+{                                                               \
+    if (cond)                                                   \
+    {                                                           \
+        /* ...output message */                                 \
+        __xf_trace(BUG, __xf_format##fmt, ## __VA_ARGS__);      \
+                                                                \
+        /* ...and die  */                                       \
+        abort();                                                \
+    }                                                           \
+}                                                               \
+while (0)
+
+#else
+#define BUG(cond, fmt, ...)             (void)0
+#endif  /* XF_DEBUG */
+
+/*******************************************************************************
+ * Run-time error processing
+ ******************************************************************************/
+
+/* ...check the API call succeeds */
+#define XF_CHK_API(cond)                                \
+({                                                      \
+    int __ret;                                          \
+                                                        \
+    if ((__ret = (int)(cond)) < 0)                      \
+    {                                                   \
+        TRACE(ERROR, _x("API error: %d"), __ret);       \
+        return __ret;                                   \
+    }                                                   \
+    __ret;                                              \
+})
+
+/* ...check the condition is true */
+#define XF_CHK_ERR(cond, error)                 \
+({                                              \
+    intptr_t __ret;                             \
+                                                \
+    if (!(__ret = (intptr_t)(cond)))            \
+    {                                           \
+        TRACE(ERROR, _x("check failed"));       \
+        return (error);                         \
+    }                                           \
+    (int)__ret;                                 \
+})
+
diff --git a/hifi/xaf/host-apf/include/xf-opcode.h b/hifi/xaf/host-apf/include/xf-opcode.h
new file mode 100644
index 0000000..f585f5c
--- /dev/null
+++ b/hifi/xaf/host-apf/include/xf-opcode.h
@@ -0,0 +1,297 @@
+/*******************************************************************************
+* Copyright (C) 2018 Cadence Design Systems, Inc.
+* 
+* Permission is hereby granted, free of charge, to any person obtaining
+* a copy of this software and associated documentation files (the
+* "Software"), to use this Software with Cadence processor cores only and 
+* not with any other processors and platforms, subject to
+* the following conditions:
+* 
+* The above copyright notice and this permission notice shall be included
+* in all copies or substantial portions of the Software.
+* 
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+******************************************************************************/
+
+#ifndef __XF_H
+#error "xf-opcode.h mustn't be included directly"
+#endif
+
+/*******************************************************************************
+ * Message routing composition - move somewhere else - tbd
+ ******************************************************************************/
+
+/* ...adjust IPC client of message going from user-space */
+#define XF_MSG_AP_FROM_USER(id, client) \
+    (((id) & ~(0xF << 2)) | (client))
+
+/* ...wipe out IPC client from message going to user-space */
+#define XF_MSG_AP_TO_USER(id)           \
+    ((id) & ~(0xF << 18))
+
+/* ...port specification (12 bits) */
+#define __XF_PORT_SPEC(core, id, port)  ((core) | ((id) << 2) | ((port) << 8))
+#define __XF_PORT_SPEC2(id, port)       ((id) | ((port) << 8))
+#define XF_PORT_CORE(spec)              ((spec) & 0x3)
+#define XF_PORT_CLIENT(spec)            (((spec) >> 2) & 0x3F)
+#define XF_PORT_ID(spec)                (((spec) >> 8) & 0xF)
+
+/* ...message id contains source and destination ports specification */
+#define __XF_MSG_ID(src, dst)           (((src) & 0xFFFF) | (((dst) & 0xFFFF) << 16))
+#define XF_MSG_SRC(id)                  (((id) >> 0) & 0xFFFF)
+#define XF_MSG_SRC_CORE(id)             (((id) >> 0) & 0x3)
+#define XF_MSG_SRC_CLIENT(id)           (((id) >> 2) & 0x3F)
+#define XF_MSG_SRC_ID(id)               (((id) >> 0) & 0xFF)
+#define XF_MSG_SRC_PORT(id)             (((id) >> 8) & 0xF)
+#define XF_MSG_SRC_PROXY(id)            (((id) >> 15) & 0x1)
+#define XF_MSG_DST(id)                  (((id) >> 16) & 0xFFFF)
+#define XF_MSG_DST_CORE(id)             (((id) >> 16) & 0x3)
+#define XF_MSG_DST_CLIENT(id)           (((id) >> 18) & 0x3F)
+#define XF_MSG_DST_ID(id)               (((id) >> 16) & 0xFF)
+#define XF_MSG_DST_PORT(id)             (((id) >> 24) & 0xF)
+#define XF_MSG_DST_PROXY(id)            (((id) >> 31) & 0x1)
+
+/* ...special treatment of AP-proxy destination field */
+#define XF_AP_IPC_CLIENT(id)            (((id) >> 18) & 0xF)
+#define XF_AP_CLIENT(id)                (((id) >> 22) & 0x1FF)
+#define __XF_AP_PROXY(core)             ((core) | 0x8000)
+#define __XF_DSP_PROXY(core)            ((core) | 0x8000)
+#define __XF_AP_CLIENT(core, client)    ((core) | ((client) << 6) | 0x8000)
+
+/*******************************************************************************
+ * Opcode composition
+ ******************************************************************************/
+
+/* ...opcode composition with command/response data tags */
+#define __XF_OPCODE(c, r, op)           (((c) << 31) | ((r) << 30) | ((op) & 0x3F))
+
+/* ...accessors */
+#define XF_OPCODE_CDATA(opcode)         ((opcode) & (1 << 31))
+#define XF_OPCODE_RDATA(opcode)         ((opcode) & (1 << 30))
+#define XF_OPCODE_TYPE(opcode)          ((opcode) & (0x3F))
+
+/*******************************************************************************
+ * Opcode types
+ ******************************************************************************/
+
+/* ...unregister client */
+#define XF_UNREGISTER                   __XF_OPCODE(0, 0, 0)
+
+/* ...register client at proxy */
+#define XF_REGISTER                     __XF_OPCODE(1, 0, 1)
+
+/* ...port routing command */
+#define XF_ROUTE                        __XF_OPCODE(1, 0, 2)
+
+/* ...port unrouting command */
+#define XF_UNROUTE                      __XF_OPCODE(1, 0, 3)
+
+/* ...shared buffer allocation */
+#define XF_ALLOC                        __XF_OPCODE(0, 0, 4)
+
+/* ...shared buffer freeing */
+#define XF_FREE                         __XF_OPCODE(0, 0, 5)
+
+/* ...set component parameters */
+#define XF_SET_PARAM                    __XF_OPCODE(1, 0, 6)
+
+/* ...get component parameters */
+#define XF_GET_PARAM                    __XF_OPCODE(1, 1, 7)
+
+/* ...input buffer reception */
+#define XF_EMPTY_THIS_BUFFER            __XF_OPCODE(1, 0, 8)
+
+/* ...output buffer reception */
+#define XF_FILL_THIS_BUFFER             __XF_OPCODE(0, 1, 9)
+
+/* ...flush specific port */
+#define XF_FLUSH                        __XF_OPCODE(0, 0, 10)
+
+/* ...start component operation */
+#define XF_START                        __XF_OPCODE(0, 0, 11)
+
+/* ...stop component operation */
+#define XF_STOP                         __XF_OPCODE(0, 0, 12)
+
+/* ...pause component operation */
+#define XF_PAUSE                        __XF_OPCODE(0, 0, 13)
+
+/* ...resume component operation */
+#define XF_RESUME                       __XF_OPCODE(0, 0, 14)
+
+/* ...extended parameter setting function */
+#define XF_SET_PARAM_EXT                __XF_OPCODE(1, 1, 15)
+
+/* ...extended parameter retrieval function */
+#define XF_GET_PARAM_EXT                __XF_OPCODE(1, 1, 16)
+
+/* ...total amount of supported decoder commands */
+#define __XF_OP_NUM                     17
+
+/*******************************************************************************
+ * XF_START message definition
+ ******************************************************************************/
+
+typedef struct xf_start_msg
+{
+    /* ...effective sample rate */
+    u32             sample_rate;
+
+    /* ...number of channels */
+    u32             channels;
+    
+    /* ...sample width */
+    u32             pcm_width;
+    
+    /* ...minimal size of intput buffer */
+    u32             input_length;
+    
+    /* ...size of output buffer */
+    u32             output_length;
+    
+}   __attribute__((__packed__)) xf_start_msg_t;
+    
+/*******************************************************************************
+ * XF_GET_PARAM message
+ ******************************************************************************/
+
+/* ...message body (command/response) */
+typedef union xf_get_param_msg
+{
+    /* ...command structure */
+    struct
+    {
+        /* ...array of parameters requested */
+        u32                 id[0];
+
+    }   __attribute__((__packed__)) c;
+
+    /* ...response structure */
+    struct
+    {
+        /* ...array of parameters values */
+        u32                 value[0];
+
+    }   __attribute__((__packed__)) r;
+
+}   xf_get_param_msg_t;
+
+/* ...length of the XF_GET_PARAM command/response */
+#define XF_GET_PARAM_CMD_LEN(params)    (sizeof(u32) * (params))
+#define XF_GET_PARAM_RSP_LEN(params)    (sizeof(u32) * (params))
+
+/*******************************************************************************
+ * XF_SET_PARAM message
+ ******************************************************************************/
+
+/* ...component initialization parameter */
+typedef struct xf_set_param_item
+{
+    /* ...index of parameter passed to SET_CONFIG_PARAM call */
+    u32                 id;
+
+    /* ...value of parameter */
+    u32                 value;
+
+}   __attribute__ ((__packed__)) xf_set_param_item_t;
+
+/* ...message body (no response message? - tbd) */
+typedef struct xf_set_param_msg
+{
+    /* ...command message */
+    xf_set_param_item_t     item[0];
+
+}   __attribute__ ((__packed__)) xf_set_param_msg_t;
+
+/* ...length of the command message */
+#define XF_SET_PARAM_CMD_LEN(params)    (sizeof(xf_set_param_item_t) * (params))
+
+/*******************************************************************************
+ * XF_SET_PARAM_EXT/XF_GET_PARAM_EXT message
+ ******************************************************************************/
+
+/* ...extended parameter descriptor */
+typedef struct xf_ext_param_desc
+{
+    /* ...index of parameter passed to SET/GET_CONFIG_PARAM call (16-bits only) */
+    u16                 id;
+
+    /* ...length of embedded input/output parameter data (in bytes) */
+    u16                 length;
+
+}   __attribute__ ((__packed__, __aligned__(4))) xf_ext_param_desc_t;
+    
+/* ...message body (no response message? - tbd) */
+typedef struct xf_ext_param_msg
+{
+    /* ...extended parameter descriptor */
+    xf_ext_param_desc_t     desc;
+
+    /* ...parameter data (in the format expected by codec) */
+    u8                      data[0];
+
+}   __attribute__ ((__packed__)) xf_ext_param_msg_t;
+
+/* ...access macros */
+
+#define xf_ext_param_first(e)           \
+    (&(e)->desc)
+
+#define xf_ext_param_next(d)            \
+    (xf_ext_param_desc_t *)(((xf_ext_param_msg_t *)(d))->data + (((d)->length + 3) & ~3))
+
+#define xf_ext_param_length(e, d)       \
+    ((u32)((u8 *)(d) - (u8 *)(ext)))
+
+#define xf_ext_param_data(d, t)         \
+    ((t *)&(d)[1])
+
+#define xf_ext_param_setup(d, i, t, s)              \
+    ((d)->id = (i), (d)->length = (s), xf_ext_param_data(d, t))
+
+
+/*******************************************************************************
+ * XF_ROUTE definition
+ ******************************************************************************/
+
+/* ...port routing command */
+typedef struct xf_route_port_msg
+{
+	/* ...source port specification */
+	u32                 src;
+
+	/* ...destination port specification */
+	u32                 dst;
+
+	/* ...number of buffers to allocate */
+	u32                 alloc_number;
+
+	/* ...length of buffer to allocate */
+	u32                 alloc_size;
+
+	/* ...alignment restriction for a buffer */
+	u32                 alloc_align;
+
+}	__attribute__((__packed__)) xf_route_port_msg_t;
+
+/*******************************************************************************
+ * XF_UNROUTE definition
+ ******************************************************************************/
+
+/* ...port unrouting command */
+typedef struct xf_unroute_port_msg
+{
+	/* ...source port specification */
+	u32                 src;
+
+	/* ...destination port specification */
+	u32                 dst;
+
+}	__attribute__((__packed__)) xf_unroute_port_msg_t;
diff --git a/hifi/xaf/host-apf/include/xf-proto.h b/hifi/xaf/host-apf/include/xf-proto.h
new file mode 100644
index 0000000..095e353
--- /dev/null
+++ b/hifi/xaf/host-apf/include/xf-proto.h
@@ -0,0 +1,82 @@
+/*******************************************************************************
+* Copyright (C) 2018 Cadence Design Systems, Inc.
+* 
+* Permission is hereby granted, free of charge, to any person obtaining
+* a copy of this software and associated documentation files (the
+* "Software"), to use this Software with Cadence processor cores only and 
+* not with any other processors and platforms, subject to
+* the following conditions:
+* 
+* The above copyright notice and this permission notice shall be included
+* in all copies or substantial portions of the Software.
+* 
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+******************************************************************************/
+
+#ifndef __XF_H
+#error "xf-proto.h mustn't be included directly"
+#endif
+
+/*******************************************************************************
+ * Forward types declarations
+ ******************************************************************************/
+
+/* ...component string identifier */
+typedef const char             *xf_id_t;
+
+/* ...handle to proxy data */
+typedef struct xf_proxy         xf_proxy_t;
+
+/* ...handle to component data */
+typedef struct xf_handle        xf_handle_t;
+
+/* ...buffer pool */
+typedef struct xf_pool          xf_pool_t;
+
+/* ...individual buffer from pool */
+typedef struct xf_buffer        xf_buffer_t;
+
+/* ...buffer pool type */
+typedef u32                     xf_pool_type_t;
+
+/* ...user-message */
+typedef struct xf_user_msg      xf_user_msg_t;
+
+/* ...proxy-message */
+typedef struct xf_proxy_msg     xf_proxy_msg_t;
+
+/* ...response callback */
+typedef void (*xf_response_cb)(xf_handle_t *h, xf_user_msg_t *msg);
+
+typedef void* xaf_mem_malloc_fxn_t(s32 size, s32 id);
+typedef void  xaf_mem_free_fxn_t(void* ptr, s32 id);
+
+/*******************************************************************************
+ * High-level API functions
+ ******************************************************************************/
+
+/* ...component operations */
+extern int      xf_open(xf_proxy_t *proxy, xf_handle_t *handle, xf_id_t id, u32 core, xf_response_cb cb);
+extern void     xf_close(xf_handle_t *handle);
+extern int      xf_command(xf_handle_t *handle, u32 dst, u32 opcode, void *buf, u32 length);
+extern int      xf_route(xf_handle_t *src, u32 s_port, xf_handle_t *dst, u32 d_port, u32 num, u32 size, u32 align);
+extern int      xf_unroute(xf_handle_t *src, u32 s_port);
+
+/* ...shared buffers operations */
+extern int      xf_pool_alloc(xf_proxy_t *proxy, u32 number, u32 length, xf_pool_type_t type, xf_pool_t **pool, s32 id, 
+		xaf_mem_malloc_fxn_t, xaf_mem_free_fxn_t);
+extern void     xf_pool_free(xf_pool_t *pool, s32 id, xaf_mem_free_fxn_t);
+extern xf_buffer_t * xf_buffer_get(xf_pool_t *pool);
+extern void     xf_buffer_put(xf_buffer_t *buffer);
+
+/* ...proxy operations */
+extern int      xf_proxy_init(xf_proxy_t *proxy, u32 core, void *p_shmem);
+extern void     xf_proxy_close(xf_proxy_t *proxy);
+
diff --git a/hifi/xaf/host-apf/include/xf-proxy.h b/hifi/xaf/host-apf/include/xf-proxy.h
new file mode 100644
index 0000000..90d7079
--- /dev/null
+++ b/hifi/xaf/host-apf/include/xf-proxy.h
@@ -0,0 +1,297 @@
+/*******************************************************************************
+* Copyright (C) 2018 Cadence Design Systems, Inc.
+* 
+* Permission is hereby granted, free of charge, to any person obtaining
+* a copy of this software and associated documentation files (the
+* "Software"), to use this Software with Cadence processor cores only and 
+* not with any other processors and platforms, subject to
+* the following conditions:
+* 
+* The above copyright notice and this permission notice shall be included
+* in all copies or substantial portions of the Software.
+* 
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+******************************************************************************/
+
+#ifndef __XF_H
+#error  "xf-proxy.h mustn't be included directly"
+#endif
+
+/*******************************************************************************
+ * User-message description - move from here to API - tbd
+ ******************************************************************************/
+
+/* ...need that at all? hope no */
+struct xf_user_msg
+{
+    /* ...source component specification */
+    u32             id;
+    
+    /* ...message opcode */
+    u32             opcode;
+    
+    /* ...buffer length */
+    u32             length;
+    
+    /* ...buffer pointer */
+    void           *buffer;
+};
+
+/* ...proxy message - bad placing of that thing here - tbd */
+struct xf_proxy_msg
+{
+    /* ...session-id field */
+    uint32_t             id;
+    
+    /* ...message opcode */
+    uint32_t             opcode;
+    
+    /* ...buffer length */
+    uint32_t             length;
+    
+    /* ...buffer pointer */
+    uint64_t             address;
+    uint64_t         v_address;
+
+}   __attribute__((__packed__));
+
+typedef struct xf_proxy_msg_driv
+{
+    /* ...session ID */
+    uint32_t                 id;
+
+    /* ...proxy API command/reponse code */
+    uint32_t                 opcode;
+
+    /* ...length of attached buffer */
+    uint32_t                 length;
+
+    /* ...physical address of message buffer */
+    uint64_t                 address;
+    uint64_t                 v_address;
+
+}__attribute__((__packed__)) xf_proxy_message_driv_t;
+/*******************************************************************************
+ * Buffer pools
+ ******************************************************************************/
+
+/* ...buffer pool type */
+enum xf_pool_type
+{
+    XF_POOL_AUX = 0,
+    XF_POOL_INPUT = 1,
+    XF_POOL_OUTPUT = 2
+};
+
+/* ...buffer link pointer */
+typedef union xf_buffer_link
+{
+    /* ...pointer to next free buffer in a pool (for free buffer) */
+    xf_buffer_t        *next;
+    
+    /* ...reference to a buffer pool (for allocated buffer) */
+    xf_pool_t          *pool;
+
+}   xf_buffer_link_t;
+
+/* ...buffer descriptor */
+struct xf_buffer
+{
+    /* ...virtual address of contiguous buffer */
+    void               *address;
+
+    /* ...link pointer */
+    xf_buffer_link_t    link;
+};
+
+/* ...buffer pool */
+struct xf_pool
+{
+    /* ...reference to proxy data */
+    xf_proxy_t         *proxy;
+
+    /* ...length of individual buffer in a pool */
+    u32                 length;
+    
+    /* ...number of buffers in a pool */
+    u32                 number;
+
+    /* ...pointer to pool memory */
+    void               *p;
+    
+    /* ...pointer to first free buffer in a pool */
+    xf_buffer_t        *free;
+
+    /* ...individual buffers */
+    xf_buffer_t         buffer[0];
+};
+
+/* ...accessor to buffer data */
+static inline void * xf_buffer_data(xf_buffer_t *buffer)
+{
+    return buffer->address;
+}
+
+/* ...length of buffer data */
+static inline size_t xf_buffer_length(xf_buffer_t *buffer)
+{
+    return buffer->link.pool->length;
+}
+
+/*******************************************************************************
+ * Proxy handle definition
+ ******************************************************************************/
+
+/* ...free clients list */
+typedef union xf_proxy_cmap_link
+{
+    /* ...index of next free client in the list */
+    u32                     next;
+    
+    /* ...pointer to allocated component handle */
+    xf_handle_t            *handle;
+
+}   xf_proxy_cmap_link_t;
+
+/* ...proxy data structure */
+struct xf_proxy
+{
+    /* ...platform-specific IPC data */
+    xf_proxy_ipc_data_t     ipc;
+    
+    /* ...auxiliary buffer pool for clients */
+    xf_pool_t              *aux;
+
+    /* ...global proxy lock */
+    xf_lock_t               lock;
+
+    /* ...proxy thread handle */
+    xf_thread_t             thread;
+
+    /* ...proxy identifier (core of remote DSP hosting SHMEM interface) */
+    u32                     core;
+
+    /* ...client association map */
+    xf_proxy_cmap_link_t    cmap[XF_CFG_PROXY_MAX_CLIENTS];
+};
+
+/*******************************************************************************
+ * Auxiliary proxy helpers
+ ******************************************************************************/
+
+/* ...get proxy identifier */
+static inline u32 xf_proxy_id(xf_proxy_t *proxy)
+{
+    return proxy->core;
+}
+
+/* ...lock proxy data */
+static inline void xf_proxy_lock(xf_proxy_t *proxy)
+{
+    __xf_lock(&proxy->lock);
+}
+
+/* ...unlock proxy data */
+static inline void xf_proxy_unlock(xf_proxy_t *proxy)
+{
+    __xf_unlock(&proxy->lock);
+}
+
+/* ...translate proxy shared address into local virtual address */
+static inline void * xf_proxy_a2b(xf_proxy_t *proxy, u32 address)
+{
+    return xf_ipc_a2b(&proxy->ipc, address);
+}
+
+/* ...translate local virtual address into shared proxy address */
+static inline u32 xf_proxy_b2a(xf_proxy_t *proxy, void *b)
+{
+    return xf_ipc_b2a(&proxy->ipc, b);
+}
+
+/* ...submit asynchronous response message */
+static inline int xf_proxy_response_put(xf_proxy_t *proxy, xf_proxy_msg_t *msg)
+{
+    return xf_proxy_ipc_response_put(&proxy->ipc, msg);
+}
+
+/* ...retrieve asynchronous response message */
+static inline int xf_proxy_response_get(xf_proxy_t *proxy, xf_proxy_msg_t *msg)
+{
+    return xf_proxy_ipc_response_get(&proxy->ipc, msg);
+}
+
+/*******************************************************************************
+ * Component handle definition
+ ******************************************************************************/
+
+struct xf_handle
+{
+    /* ...platform-specific IPC data */
+    xf_ipc_data_t           ipc;
+    
+    /* ...reference to proxy data */
+    xf_proxy_t             *proxy;
+    
+    /* ...component lock */
+    xf_lock_t               lock;
+ 
+    /* ...auxiliary control buffer for control transactions */
+    xf_buffer_t            *aux;
+
+    /* ...global client-id of the component */
+    u32                     id;
+
+    /* ...local client number (think about merging into "id" field - tbd) */
+    u32                     client;
+    
+    /* ...response processing hook */
+    xf_response_cb          response;
+};
+
+/*******************************************************************************
+ * Auxiliary component helpers
+ ******************************************************************************/
+
+/* ...component client-id (global scope) */
+static inline u32 xf_handle_id(xf_handle_t *handle)
+{
+    return handle->id;
+}
+
+/* ...pointer to auxiliary buffer */
+static inline void * xf_handle_aux(xf_handle_t *handle)
+{
+    return xf_buffer_data(handle->aux);
+}
+
+/* ...acquire component lock */
+static inline void xf_lock(xf_handle_t *handle)
+{
+    __xf_lock(&handle->lock);
+}
+
+/* ...release component lock */
+static inline void xf_unlock(xf_handle_t *handle)
+{
+    __xf_unlock(&handle->lock);
+}
+
+/* ...put asynchronous response into local IPC */
+static inline int xf_response_put(xf_handle_t *handle, xf_user_msg_t *msg)
+{
+    return xf_ipc_response_put(&handle->ipc, msg);
+}
+
+/* ...get asynchronous response from local IPC */
+static inline int xf_response_get(xf_handle_t *handle, xf_user_msg_t *msg)
+{
+    return xf_ipc_response_get(&handle->ipc, msg);
+}
diff --git a/hifi/xaf/host-apf/include/xf.h b/hifi/xaf/host-apf/include/xf.h
new file mode 100644
index 0000000..6af69ce
--- /dev/null
+++ b/hifi/xaf/host-apf/include/xf.h
@@ -0,0 +1,53 @@
+/*******************************************************************************
+* Copyright (C) 2018 Cadence Design Systems, Inc.
+* 
+* Permission is hereby granted, free of charge, to any person obtaining
+* a copy of this software and associated documentation files (the
+* "Software"), to use this Software with Cadence processor cores only and 
+* not with any other processors and platforms, subject to
+* the following conditions:
+* 
+* The above copyright notice and this permission notice shall be included
+* in all copies or substantial portions of the Software.
+* 
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+******************************************************************************/
+
+#ifdef  __XF_H
+#error  "xf.h included more than once"
+#endif
+
+#define __XF_H
+
+/*******************************************************************************
+ * Common runtime framework
+ ******************************************************************************/
+
+/* ...target configuration */
+#include "xf-config.h"
+
+/* ...platform run-time */
+#include "xf-runtime.h"
+
+/* ...debugging facility */
+#include "xf-debug.h"
+
+/* ...API prototypes */
+#include "xf-proto.h"
+
+/* ...standard opcodes */
+#include "xf-opcode.h"
+
+/* ...platform-specific IPC layer */
+#include "xf-ipc.h"
+
+/* ...proxy definitions */
+#include "xf-proxy.h"
+
diff --git a/hifi/xaf/host-apf/playback/tinyalsa/asoundlib.h b/hifi/xaf/host-apf/playback/tinyalsa/asoundlib.h
new file mode 100644
index 0000000..753a996
--- /dev/null
+++ b/hifi/xaf/host-apf/playback/tinyalsa/asoundlib.h
@@ -0,0 +1,314 @@
+/*******************************************************************************
+* Copyright (C) 2018 Cadence Design Systems, Inc.
+* 
+* Permission is hereby granted, free of charge, to any person obtaining
+* a copy of this software and associated documentation files (the
+* "Software"), to use this Software with Cadence processor cores only and 
+* not with any other processors and platforms, subject to
+* the following conditions:
+* 
+* The above copyright notice and this permission notice shall be included
+* in all copies or substantial portions of the Software.
+* 
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+******************************************************************************/
+
+#ifndef ASOUNDLIB_H
+#define ASOUNDLIB_H
+
+#include <sys/time.h>
+#include <stddef.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+/*
+ * PCM API
+ */
+
+struct pcm;
+
+#define PCM_OUT        0x00000000
+#define PCM_IN         0x10000000
+#define PCM_MMAP       0x00000001
+#define PCM_NOIRQ      0x00000002
+#define PCM_NORESTART  0x00000004 /* PCM_NORESTART - when set, calls to
+                                   * pcm_write for a playback stream will not
+                                   * attempt to restart the stream in the case
+                                   * of an underflow, but will return -EPIPE
+                                   * instead.  After the first -EPIPE error, the
+                                   * stream is considered to be stopped, and a
+                                   * second call to pcm_write will attempt to
+                                   * restart the stream.
+                                   */
+#define PCM_MONOTONIC  0x00000008 /* see pcm_get_htimestamp */
+
+/* PCM runtime states */
+#define	PCM_STATE_OPEN		0
+#define	PCM_STATE_SETUP		1
+#define	PCM_STATE_PREPARED	2
+#define	PCM_STATE_RUNNING		3
+#define	PCM_STATE_XRUN		4
+#define	PCM_STATE_DRAINING	5
+#define	PCM_STATE_PAUSED		6
+#define	PCM_STATE_SUSPENDED	7
+#define	PCM_STATE_DISCONNECTED	8
+
+/* TLV header size*/
+#define TLV_HEADER_SIZE (2 * sizeof(unsigned int))
+
+/* Bit formats */
+enum pcm_format {
+    PCM_FORMAT_INVALID = -1,
+    PCM_FORMAT_S16_LE = 0,  /* 16-bit signed */
+    PCM_FORMAT_S32_LE,      /* 32-bit signed */
+    PCM_FORMAT_S8,          /* 8-bit signed */
+    PCM_FORMAT_S24_LE,      /* 24-bits in 4-bytes */
+    PCM_FORMAT_S24_3LE,     /* 24-bits in 3-bytes */
+
+    PCM_FORMAT_MAX,
+};
+
+/* Bitmask has 256 bits (32 bytes) in asound.h */
+struct pcm_mask {
+    unsigned int bits[32 / sizeof(unsigned int)];
+};
+
+/* Configuration for a stream */
+struct pcm_config {
+    unsigned int channels;
+    unsigned int rate;
+    unsigned int period_size;
+    unsigned int period_count;
+    enum pcm_format format;
+
+    /* Values to use for the ALSA start, stop and silence thresholds, and
+     * silence size.  Setting any one of these values to 0 will cause the
+     * default tinyalsa values to be used instead.
+     * Tinyalsa defaults are as follows.
+     *
+     * start_threshold   : period_count * period_size
+     * stop_threshold    : period_count * period_size
+     * silence_threshold : 0
+     * silence_size      : 0
+     */
+    unsigned int start_threshold;
+    unsigned int stop_threshold;
+    unsigned int silence_threshold;
+    unsigned int silence_size;
+
+    /* Minimum number of frames available before pcm_mmap_write() will actually
+     * write into the kernel buffer. Only used if the stream is opened in mmap mode
+     * (pcm_open() called with PCM_MMAP flag set).   Use 0 for default.
+     */
+    int avail_min;
+};
+
+/* PCM parameters */
+enum pcm_param
+{
+    /* mask parameters */
+    PCM_PARAM_ACCESS,
+    PCM_PARAM_FORMAT,
+    PCM_PARAM_SUBFORMAT,
+    /* interval parameters */
+    PCM_PARAM_SAMPLE_BITS,
+    PCM_PARAM_FRAME_BITS,
+    PCM_PARAM_CHANNELS,
+    PCM_PARAM_RATE,
+    PCM_PARAM_PERIOD_TIME,
+    PCM_PARAM_PERIOD_SIZE,
+    PCM_PARAM_PERIOD_BYTES,
+    PCM_PARAM_PERIODS,
+    PCM_PARAM_BUFFER_TIME,
+    PCM_PARAM_BUFFER_SIZE,
+    PCM_PARAM_BUFFER_BYTES,
+    PCM_PARAM_TICK_TIME,
+};
+
+/* Mixer control types */
+enum mixer_ctl_type {
+    MIXER_CTL_TYPE_BOOL,
+    MIXER_CTL_TYPE_INT,
+    MIXER_CTL_TYPE_ENUM,
+    MIXER_CTL_TYPE_BYTE,
+    MIXER_CTL_TYPE_IEC958,
+    MIXER_CTL_TYPE_INT64,
+    MIXER_CTL_TYPE_UNKNOWN,
+
+    MIXER_CTL_TYPE_MAX,
+};
+
+/* Open and close a stream */
+struct pcm *pcm_open(unsigned int card, unsigned int device,
+                     unsigned int flags, struct pcm_config *config);
+int pcm_close(struct pcm *pcm);
+int pcm_is_ready(struct pcm *pcm);
+
+/* Obtain the parameters for a PCM */
+struct pcm_params *pcm_params_get(unsigned int card, unsigned int device,
+                                  unsigned int flags);
+void pcm_params_free(struct pcm_params *pcm_params);
+
+struct pcm_mask *pcm_params_get_mask(struct pcm_params *pcm_params,
+                                     enum pcm_param param);
+unsigned int pcm_params_get_min(struct pcm_params *pcm_params,
+                                enum pcm_param param);
+void pcm_params_set_min(struct pcm_params *pcm_params,
+                                enum pcm_param param, unsigned int val);
+unsigned int pcm_params_get_max(struct pcm_params *pcm_params,
+                                enum pcm_param param);
+void pcm_params_set_max(struct pcm_params *pcm_params,
+                                enum pcm_param param, unsigned int val);
+
+/* Converts the pcm parameters to a human readable string.
+ * The string parameter is a caller allocated buffer of size bytes,
+ * which is then filled up to size - 1 and null terminated,
+ * if size is greater than zero.
+ * The return value is the number of bytes copied to string
+ * (not including null termination) if less than size; otherwise,
+ * the number of bytes required for the buffer.
+ */
+int pcm_params_to_string(struct pcm_params *params, char *string, unsigned int size);
+
+/* Returns 1 if the pcm_format is present (format bit set) in
+ * the pcm_params structure; 0 otherwise, or upon unrecognized format.
+ */
+int pcm_params_format_test(struct pcm_params *params, enum pcm_format format);
+
+/* Set and get config */
+int pcm_get_config(struct pcm *pcm, struct pcm_config *config);
+int pcm_set_config(struct pcm *pcm, struct pcm_config *config);
+
+/* Returns a human readable reason for the last error */
+const char *pcm_get_error(struct pcm *pcm);
+
+/* Returns the sample size in bits for a PCM format.
+ * As with ALSA formats, this is the storage size for the format, whereas the
+ * format represents the number of significant bits. For example,
+ * PCM_FORMAT_S24_LE uses 32 bits of storage.
+ */
+unsigned int pcm_format_to_bits(enum pcm_format format);
+
+/* Returns the buffer size (int frames) that should be used for pcm_write. */
+unsigned int pcm_get_buffer_size(struct pcm *pcm);
+unsigned int pcm_frames_to_bytes(struct pcm *pcm, unsigned int frames);
+unsigned int pcm_bytes_to_frames(struct pcm *pcm, unsigned int bytes);
+
+/* Returns the pcm latency in ms */
+unsigned int pcm_get_latency(struct pcm *pcm);
+
+/* Returns available frames in pcm buffer and corresponding time stamp.
+ * The clock is CLOCK_MONOTONIC if flag PCM_MONOTONIC was specified in pcm_open,
+ * otherwise the clock is CLOCK_REALTIME.
+ * For an input stream, frames available are frames ready for the
+ * application to read.
+ * For an output stream, frames available are the number of empty frames available
+ * for the application to write.
+ */
+int pcm_get_htimestamp(struct pcm *pcm, unsigned int *avail,
+                       struct timespec *tstamp);
+
+/* Returns the subdevice on which the pcm has been opened */
+unsigned int pcm_get_subdevice(struct pcm *pcm);
+
+/* Write data to the fifo.
+ * Will start playback on the first write or on a write that
+ * occurs after a fifo underrun.
+ */
+int pcm_write(struct pcm *pcm, const void *data, unsigned int count);
+int pcm_read(struct pcm *pcm, void *data, unsigned int count);
+
+/*
+ * mmap() support.
+ */
+int pcm_mmap_write(struct pcm *pcm, const void *data, unsigned int count);
+int pcm_mmap_read(struct pcm *pcm, void *data, unsigned int count);
+int pcm_mmap_begin(struct pcm *pcm, void **areas, unsigned int *offset,
+                   unsigned int *frames);
+int pcm_mmap_commit(struct pcm *pcm, unsigned int offset, unsigned int frames);
+int pcm_mmap_avail(struct pcm *pcm);
+
+/* Prepare the PCM substream to be triggerable */
+int pcm_prepare(struct pcm *pcm);
+/* Start and stop a PCM channel that doesn't transfer data */
+int pcm_start(struct pcm *pcm);
+int pcm_stop(struct pcm *pcm);
+
+/* ioctl function for PCM driver */
+int pcm_ioctl(struct pcm *pcm, int request, ...);
+
+/* Interrupt driven API */
+int pcm_wait(struct pcm *pcm, int timeout);
+int pcm_get_poll_fd(struct pcm *pcm);
+
+/* Change avail_min after the stream has been opened with no need to stop the stream.
+ * Only accepted if opened with PCM_MMAP and PCM_NOIRQ flags
+ */
+int pcm_set_avail_min(struct pcm *pcm, int avail_min);
+
+/*
+ * MIXER API
+ */
+
+struct mixer;
+struct mixer_ctl;
+
+/* Open and close a mixer */
+struct mixer *mixer_open(unsigned int card);
+void mixer_close(struct mixer *mixer);
+
+/* Get info about a mixer */
+const char *mixer_get_name(struct mixer *mixer);
+
+/* Obtain mixer controls */
+unsigned int mixer_get_num_ctls(struct mixer *mixer);
+struct mixer_ctl *mixer_get_ctl(struct mixer *mixer, unsigned int id);
+struct mixer_ctl *mixer_get_ctl_by_name(struct mixer *mixer, const char *name);
+
+/* Get info about mixer controls */
+const char *mixer_ctl_get_name(struct mixer_ctl *ctl);
+enum mixer_ctl_type mixer_ctl_get_type(struct mixer_ctl *ctl);
+const char *mixer_ctl_get_type_string(struct mixer_ctl *ctl);
+unsigned int mixer_ctl_get_num_values(struct mixer_ctl *ctl);
+unsigned int mixer_ctl_get_num_enums(struct mixer_ctl *ctl);
+const char *mixer_ctl_get_enum_string(struct mixer_ctl *ctl,
+                                      unsigned int enum_id);
+
+/* Some sound cards update their controls due to external events,
+ * such as HDMI EDID byte data changing when an HDMI cable is
+ * connected. This API allows the count of elements to be updated.
+ */
+void mixer_ctl_update(struct mixer_ctl *ctl);
+
+/* Set and get mixer controls */
+int mixer_ctl_get_percent(struct mixer_ctl *ctl, unsigned int id);
+int mixer_ctl_set_percent(struct mixer_ctl *ctl, unsigned int id, int percent);
+
+int mixer_ctl_get_value(struct mixer_ctl *ctl, unsigned int id);
+int mixer_ctl_is_access_tlv_rw(struct mixer_ctl *ctl);
+int mixer_ctl_get_array(struct mixer_ctl *ctl, void *array, size_t count);
+int mixer_ctl_set_value(struct mixer_ctl *ctl, unsigned int id, int value);
+int mixer_ctl_set_array(struct mixer_ctl *ctl, const void *array, size_t count);
+int mixer_ctl_set_enum_by_string(struct mixer_ctl *ctl, const char *string);
+
+/* Determe range of integer mixer controls */
+int mixer_ctl_get_range_min(struct mixer_ctl *ctl);
+int mixer_ctl_get_range_max(struct mixer_ctl *ctl);
+
+int mixer_subscribe_events(struct mixer *mixer, int subscribe);
+int mixer_wait_event(struct mixer *mixer, int timeout);
+
+#if defined(__cplusplus)
+}  /* extern "C" */
+#endif
+
+#endif
diff --git a/hifi/xaf/host-apf/playback/tinyalsa/pcm.c b/hifi/xaf/host-apf/playback/tinyalsa/pcm.c
new file mode 100644
index 0000000..e0dc7bb
--- /dev/null
+++ b/hifi/xaf/host-apf/playback/tinyalsa/pcm.c
@@ -0,0 +1,1311 @@
+/*******************************************************************************
+* Copyright (C) 2018 Cadence Design Systems, Inc.
+* 
+* Permission is hereby granted, free of charge, to any person obtaining
+* a copy of this software and associated documentation files (the
+* "Software"), to use this Software with Cadence processor cores only and 
+* not with any other processors and platforms, subject to
+* the following conditions:
+* 
+* The above copyright notice and this permission notice shall be included
+* in all copies or substantial portions of the Software.
+* 
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+******************************************************************************/
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <fcntl.h>
+#include <stdarg.h>
+#include <string.h>
+#include <errno.h>
+#include <unistd.h>
+#include <poll.h>
+
+#include <sys/ioctl.h>
+#include <sys/mman.h>
+#include <sys/time.h>
+#include <limits.h>
+
+#include <linux/ioctl.h>
+#define __force
+//#define __bitwise
+#define __user
+#include <sound/asound.h>
+
+#include <tinyalsa/asoundlib.h>
+
+#define PARAM_MAX SNDRV_PCM_HW_PARAM_LAST_INTERVAL
+
+/* Logs information into a string; follows snprintf() in that
+ * offset may be greater than size, and though no characters are copied
+ * into string, characters are still counted into offset. */
+#define STRLOG(string, offset, size, ...) \
+    do { int temp, clipoffset = offset > size ? size : offset; \
+         temp = snprintf(string + clipoffset, size - clipoffset, __VA_ARGS__); \
+         if (temp > 0) offset += temp; } while (0)
+
+#ifndef ARRAY_SIZE
+#define ARRAY_SIZE(a) (sizeof(a) / sizeof((a)[0]))
+#endif
+
+/* refer to SNDRV_PCM_ACCESS_##index in sound/asound.h. */
+static const char * const access_lookup[] = {
+        "MMAP_INTERLEAVED",
+        "MMAP_NONINTERLEAVED",
+        "MMAP_COMPLEX",
+        "RW_INTERLEAVED",
+        "RW_NONINTERLEAVED",
+};
+
+/* refer to SNDRV_PCM_FORMAT_##index in sound/asound.h. */
+static const char * const format_lookup[] = {
+        /*[0] =*/ "S8",
+        "U8",
+        "S16_LE",
+        "S16_BE",
+        "U16_LE",
+        "U16_BE",
+        "S24_LE",
+        "S24_BE",
+        "U24_LE",
+        "U24_BE",
+        "S32_LE",
+        "S32_BE",
+        "U32_LE",
+        "U32_BE",
+        "FLOAT_LE",
+        "FLOAT_BE",
+        "FLOAT64_LE",
+        "FLOAT64_BE",
+        "IEC958_SUBFRAME_LE",
+        "IEC958_SUBFRAME_BE",
+        "MU_LAW",
+        "A_LAW",
+        "IMA_ADPCM",
+        "MPEG",
+        /*[24] =*/ "GSM",
+        /* gap */
+        [31] = "SPECIAL",
+        "S24_3LE",
+        "S24_3BE",
+        "U24_3LE",
+        "U24_3BE",
+        "S20_3LE",
+        "S20_3BE",
+        "U20_3LE",
+        "U20_3BE",
+        "S18_3LE",
+        "S18_3BE",
+        "U18_3LE",
+        /*[43] =*/ "U18_3BE",
+#if 0
+        /* recent additions, may not be present on local asound.h */
+        "G723_24",
+        "G723_24_1B",
+        "G723_40",
+        "G723_40_1B",
+        "DSD_U8",
+        "DSD_U16_LE",
+#endif
+};
+
+/* refer to SNDRV_PCM_SUBFORMAT_##index in sound/asound.h. */
+static const char * const subformat_lookup[] = {
+        "STD",
+};
+
+static inline int param_is_mask(int p)
+{
+    return (p >= SNDRV_PCM_HW_PARAM_FIRST_MASK) &&
+        (p <= SNDRV_PCM_HW_PARAM_LAST_MASK);
+}
+
+static inline int param_is_interval(int p)
+{
+    return (p >= SNDRV_PCM_HW_PARAM_FIRST_INTERVAL) &&
+        (p <= SNDRV_PCM_HW_PARAM_LAST_INTERVAL);
+}
+
+static inline struct snd_interval *param_to_interval(struct snd_pcm_hw_params *p, int n)
+{
+    return &(p->intervals[n - SNDRV_PCM_HW_PARAM_FIRST_INTERVAL]);
+}
+
+static inline struct snd_mask *param_to_mask(struct snd_pcm_hw_params *p, int n)
+{
+    return &(p->masks[n - SNDRV_PCM_HW_PARAM_FIRST_MASK]);
+}
+
+static void param_set_mask(struct snd_pcm_hw_params *p, int n, unsigned int bit)
+{
+    if (bit >= SNDRV_MASK_MAX)
+        return;
+    if (param_is_mask(n)) {
+        struct snd_mask *m = param_to_mask(p, n);
+        m->bits[0] = 0;
+        m->bits[1] = 0;
+        m->bits[bit >> 5] |= (1 << (bit & 31));
+    }
+}
+
+static void param_set_min(struct snd_pcm_hw_params *p, int n, unsigned int val)
+{
+    if (param_is_interval(n)) {
+        struct snd_interval *i = param_to_interval(p, n);
+        i->min = val;
+    }
+}
+
+static unsigned int param_get_min(struct snd_pcm_hw_params *p, int n)
+{
+    if (param_is_interval(n)) {
+        struct snd_interval *i = param_to_interval(p, n);
+        return i->min;
+    }
+    return 0;
+}
+
+static void param_set_max(struct snd_pcm_hw_params *p, int n, unsigned int val)
+{
+    if (param_is_interval(n)) {
+        struct snd_interval *i = param_to_interval(p, n);
+        i->max = val;
+    }
+}
+
+static unsigned int param_get_max(struct snd_pcm_hw_params *p, int n)
+{
+    if (param_is_interval(n)) {
+        struct snd_interval *i = param_to_interval(p, n);
+        return i->max;
+    }
+    return 0;
+}
+
+static void param_set_int(struct snd_pcm_hw_params *p, int n, unsigned int val)
+{
+    if (param_is_interval(n)) {
+        struct snd_interval *i = param_to_interval(p, n);
+        i->min = val;
+        i->max = val;
+        i->integer = 1;
+    }
+}
+
+static unsigned int param_get_int(struct snd_pcm_hw_params *p, int n)
+{
+    if (param_is_interval(n)) {
+        struct snd_interval *i = param_to_interval(p, n);
+        if (i->integer)
+            return i->max;
+    }
+    return 0;
+}
+
+static void param_init(struct snd_pcm_hw_params *p)
+{
+    int n;
+
+    memset(p, 0, sizeof(*p));
+    for (n = SNDRV_PCM_HW_PARAM_FIRST_MASK;
+         n <= SNDRV_PCM_HW_PARAM_LAST_MASK; n++) {
+            struct snd_mask *m = param_to_mask(p, n);
+            m->bits[0] = ~0;
+            m->bits[1] = ~0;
+    }
+    for (n = SNDRV_PCM_HW_PARAM_FIRST_INTERVAL;
+         n <= SNDRV_PCM_HW_PARAM_LAST_INTERVAL; n++) {
+            struct snd_interval *i = param_to_interval(p, n);
+            i->min = 0;
+            i->max = ~0;
+    }
+    p->rmask = ~0U;
+    p->cmask = 0;
+    p->info = ~0U;
+}
+
+#define PCM_ERROR_MAX 128
+
+struct pcm {
+    int fd;
+    unsigned int flags;
+    int running:1;
+    int prepared:1;
+    int underruns;
+    unsigned int buffer_size;
+    unsigned int boundary;
+    char error[PCM_ERROR_MAX];
+    struct pcm_config config;
+    struct snd_pcm_mmap_status *mmap_status;
+    struct snd_pcm_mmap_control *mmap_control;
+    struct snd_pcm_sync_ptr *sync_ptr;
+    void *mmap_buffer;
+    unsigned int noirq_frames_per_msec;
+    int wait_for_avail_min;
+    unsigned int subdevice;
+};
+
+unsigned int pcm_get_buffer_size(struct pcm *pcm)
+{
+    return pcm->buffer_size;
+}
+
+const char* pcm_get_error(struct pcm *pcm)
+{
+    return pcm->error;
+}
+
+unsigned int pcm_get_subdevice(struct pcm *pcm)
+{
+    return pcm->subdevice;
+}
+
+static int oops(struct pcm *pcm, int e, const char *fmt, ...)
+{
+    va_list ap;
+    int sz;
+
+    va_start(ap, fmt);
+    vsnprintf(pcm->error, PCM_ERROR_MAX, fmt, ap);
+    va_end(ap);
+    sz = strlen(pcm->error);
+
+    if (errno)
+        snprintf(pcm->error + sz, PCM_ERROR_MAX - sz,
+                 ": %s", strerror(e));
+    return -1;
+}
+
+static unsigned int pcm_format_to_alsa(enum pcm_format format)
+{
+    switch (format) {
+    case PCM_FORMAT_S32_LE:
+        return SNDRV_PCM_FORMAT_S32_LE;
+    case PCM_FORMAT_S8:
+        return SNDRV_PCM_FORMAT_S8;
+    case PCM_FORMAT_S24_3LE:
+        return SNDRV_PCM_FORMAT_S24_3LE;
+    case PCM_FORMAT_S24_LE:
+        return SNDRV_PCM_FORMAT_S24_LE;
+    default:
+    case PCM_FORMAT_S16_LE:
+        return SNDRV_PCM_FORMAT_S16_LE;
+    };
+}
+
+unsigned int pcm_format_to_bits(enum pcm_format format)
+{
+    switch (format) {
+    case PCM_FORMAT_S32_LE:
+    case PCM_FORMAT_S24_LE:
+        return 32;
+    case PCM_FORMAT_S24_3LE:
+        return 24;
+    default:
+    case PCM_FORMAT_S16_LE:
+        return 16;
+    };
+}
+
+unsigned int pcm_bytes_to_frames(struct pcm *pcm, unsigned int bytes)
+{
+    return bytes / (pcm->config.channels *
+        (pcm_format_to_bits(pcm->config.format) >> 3));
+}
+
+unsigned int pcm_frames_to_bytes(struct pcm *pcm, unsigned int frames)
+{
+    return frames * pcm->config.channels *
+        (pcm_format_to_bits(pcm->config.format) >> 3);
+}
+
+static int pcm_sync_ptr(struct pcm *pcm, int flags) {
+    if (pcm->sync_ptr) {
+        pcm->sync_ptr->flags = flags;
+        if (ioctl(pcm->fd, SNDRV_PCM_IOCTL_SYNC_PTR, pcm->sync_ptr) < 0)
+            return -1;
+    }
+    return 0;
+}
+
+static int pcm_hw_mmap_status(struct pcm *pcm) {
+
+    if (pcm->sync_ptr)
+        return 0;
+
+    int page_size = sysconf(_SC_PAGE_SIZE);
+    pcm->mmap_status = mmap(NULL, page_size, PROT_READ, MAP_FILE | MAP_SHARED,
+                            pcm->fd, SNDRV_PCM_MMAP_OFFSET_STATUS);
+    if (pcm->mmap_status == MAP_FAILED)
+        pcm->mmap_status = NULL;
+    if (!pcm->mmap_status)
+        goto mmap_error;
+
+    pcm->mmap_control = mmap(NULL, page_size, PROT_READ | PROT_WRITE,
+                             MAP_FILE | MAP_SHARED, pcm->fd, SNDRV_PCM_MMAP_OFFSET_CONTROL);
+    if (pcm->mmap_control == MAP_FAILED)
+        pcm->mmap_control = NULL;
+    if (!pcm->mmap_control) {
+        munmap(pcm->mmap_status, page_size);
+        pcm->mmap_status = NULL;
+        goto mmap_error;
+    }
+    if (pcm->flags & PCM_MMAP)
+        pcm->mmap_control->avail_min = pcm->config.avail_min;
+    else
+        pcm->mmap_control->avail_min = 1;
+
+    return 0;
+
+mmap_error:
+
+    pcm->sync_ptr = calloc(1, sizeof(*pcm->sync_ptr));
+    if (!pcm->sync_ptr)
+        return -ENOMEM;
+    pcm->mmap_status = &pcm->sync_ptr->s.status;
+    pcm->mmap_control = &pcm->sync_ptr->c.control;
+    if (pcm->flags & PCM_MMAP)
+        pcm->mmap_control->avail_min = pcm->config.avail_min;
+    else
+        pcm->mmap_control->avail_min = 1;
+
+    pcm_sync_ptr(pcm, 0);
+
+    return 0;
+}
+
+static void pcm_hw_munmap_status(struct pcm *pcm) {
+    if (pcm->sync_ptr) {
+        free(pcm->sync_ptr);
+        pcm->sync_ptr = NULL;
+    } else {
+        int page_size = sysconf(_SC_PAGE_SIZE);
+        if (pcm->mmap_status)
+            munmap(pcm->mmap_status, page_size);
+        if (pcm->mmap_control)
+            munmap(pcm->mmap_control, page_size);
+    }
+    pcm->mmap_status = NULL;
+    pcm->mmap_control = NULL;
+}
+
+static int pcm_areas_copy(struct pcm *pcm, unsigned int pcm_offset,
+                          char *buf, unsigned int src_offset,
+                          unsigned int frames)
+{
+    int size_bytes = pcm_frames_to_bytes(pcm, frames);
+    int pcm_offset_bytes = pcm_frames_to_bytes(pcm, pcm_offset);
+    int src_offset_bytes = pcm_frames_to_bytes(pcm, src_offset);
+
+    /* interleaved only atm */
+    if (pcm->flags & PCM_IN)
+        memcpy(buf + src_offset_bytes,
+               (char*)pcm->mmap_buffer + pcm_offset_bytes,
+               size_bytes);
+    else
+        memcpy((char*)pcm->mmap_buffer + pcm_offset_bytes,
+               buf + src_offset_bytes,
+               size_bytes);
+    return 0;
+}
+
+static int pcm_mmap_transfer_areas(struct pcm *pcm, char *buf,
+                                unsigned int offset, unsigned int size)
+{
+    void *pcm_areas;
+    int commit;
+    unsigned int pcm_offset, frames, count = 0;
+
+    while (size > 0) {
+        frames = size;
+        pcm_mmap_begin(pcm, &pcm_areas, &pcm_offset, &frames);
+        pcm_areas_copy(pcm, pcm_offset, buf, offset, frames);
+        commit = pcm_mmap_commit(pcm, pcm_offset, frames);
+        if (commit < 0) {
+            oops(pcm, commit, "failed to commit %d frames\n", frames);
+            return commit;
+        }
+
+        offset += commit;
+        count += commit;
+        size -= commit;
+    }
+    return count;
+}
+
+int pcm_get_htimestamp(struct pcm *pcm, unsigned int *avail,
+                       struct timespec *tstamp)
+{
+    int frames;
+    int rc;
+    snd_pcm_uframes_t hw_ptr;
+
+    if (!pcm_is_ready(pcm))
+        return -1;
+
+    rc = pcm_sync_ptr(pcm, SNDRV_PCM_SYNC_PTR_APPL|SNDRV_PCM_SYNC_PTR_HWSYNC);
+    if (rc < 0)
+        return -1;
+
+    if ((pcm->mmap_status->state != PCM_STATE_RUNNING) &&
+            (pcm->mmap_status->state != PCM_STATE_DRAINING))
+        return -1;
+
+    *tstamp = pcm->mmap_status->tstamp;
+    if (tstamp->tv_sec == 0 && tstamp->tv_nsec == 0)
+        return -1;
+
+    hw_ptr = pcm->mmap_status->hw_ptr;
+    if (pcm->flags & PCM_IN)
+        frames = hw_ptr - pcm->mmap_control->appl_ptr;
+    else
+        frames = hw_ptr + pcm->buffer_size - pcm->mmap_control->appl_ptr;
+
+    if (frames < 0)
+        frames += pcm->boundary;
+    else if (frames > (int)pcm->boundary)
+        frames -= pcm->boundary;
+
+    *avail = (unsigned int)frames;
+
+    return 0;
+}
+
+int pcm_write(struct pcm *pcm, const void *data, unsigned int count)
+{
+    struct snd_xferi x;
+
+    if (pcm->flags & PCM_IN)
+        return -EINVAL;
+
+    x.buf = (void*)data;
+    x.frames = count / (pcm->config.channels *
+                        pcm_format_to_bits(pcm->config.format) / 8);
+
+    for (;;) {
+        if (!pcm->running) {
+            int prepare_error = pcm_prepare(pcm);
+            if (prepare_error)
+                return prepare_error;
+            if (ioctl(pcm->fd, SNDRV_PCM_IOCTL_WRITEI_FRAMES, &x))
+                return oops(pcm, errno, "cannot write initial data");
+            pcm->running = 1;
+            return 0;
+        }
+        if (ioctl(pcm->fd, SNDRV_PCM_IOCTL_WRITEI_FRAMES, &x)) {
+            pcm->prepared = 0;
+            pcm->running = 0;
+            if (errno == EPIPE) {
+                /* we failed to make our window -- try to restart if we are
+                 * allowed to do so.  Otherwise, simply allow the EPIPE error to
+                 * propagate up to the app level */
+                pcm->underruns++;
+                if (pcm->flags & PCM_NORESTART)
+                    return -EPIPE;
+                continue;
+            }
+            return oops(pcm, errno, "cannot write stream data");
+        }
+        return 0;
+    }
+}
+
+int pcm_read(struct pcm *pcm, void *data, unsigned int count)
+{
+    struct snd_xferi x;
+
+    if (!(pcm->flags & PCM_IN))
+        return -EINVAL;
+
+    x.buf = data;
+    x.frames = count / (pcm->config.channels *
+                        pcm_format_to_bits(pcm->config.format) / 8);
+
+    for (;;) {
+        if (!pcm->running) {
+            if (pcm_start(pcm) < 0) {
+                fprintf(stderr, "start error");
+                return -errno;
+            }
+        }
+        if (ioctl(pcm->fd, SNDRV_PCM_IOCTL_READI_FRAMES, &x)) {
+            pcm->prepared = 0;
+            pcm->running = 0;
+            if (errno == EPIPE) {
+                    /* we failed to make our window -- try to restart */
+                pcm->underruns++;
+                continue;
+            }
+            return oops(pcm, errno, "cannot read stream data");
+        }
+        return 0;
+    }
+}
+
+static struct pcm bad_pcm = {
+    .fd = -1,
+};
+
+struct pcm_params *pcm_params_get(unsigned int card, unsigned int device,
+                                  unsigned int flags)
+{
+    struct snd_pcm_hw_params *params;
+    char fn[256];
+    int fd;
+
+    snprintf(fn, sizeof(fn), "/dev/snd/pcmC%uD%u%c", card, device,
+             flags & PCM_IN ? 'c' : 'p');
+
+    fd = open(fn, O_RDWR);
+    if (fd < 0) {
+        fprintf(stderr, "cannot open device '%s'\n", fn);
+        goto err_open;
+    }
+
+    params = calloc(1, sizeof(struct snd_pcm_hw_params));
+    if (!params)
+        goto err_calloc;
+
+    param_init(params);
+    if (ioctl(fd, SNDRV_PCM_IOCTL_HW_REFINE, params)) {
+        fprintf(stderr, "SNDRV_PCM_IOCTL_HW_REFINE error (%d)\n", errno);
+        goto err_hw_refine;
+    }
+
+    close(fd);
+
+    return (struct pcm_params *)params;
+
+err_hw_refine:
+    free(params);
+err_calloc:
+    close(fd);
+err_open:
+    return NULL;
+}
+
+void pcm_params_free(struct pcm_params *pcm_params)
+{
+    struct snd_pcm_hw_params *params = (struct snd_pcm_hw_params *)pcm_params;
+
+    if (params)
+        free(params);
+}
+
+static int pcm_param_to_alsa(enum pcm_param param)
+{
+    switch (param) {
+    case PCM_PARAM_ACCESS:
+        return SNDRV_PCM_HW_PARAM_ACCESS;
+    case PCM_PARAM_FORMAT:
+        return SNDRV_PCM_HW_PARAM_FORMAT;
+    case PCM_PARAM_SUBFORMAT:
+        return SNDRV_PCM_HW_PARAM_SUBFORMAT;
+    case PCM_PARAM_SAMPLE_BITS:
+        return SNDRV_PCM_HW_PARAM_SAMPLE_BITS;
+        break;
+    case PCM_PARAM_FRAME_BITS:
+        return SNDRV_PCM_HW_PARAM_FRAME_BITS;
+        break;
+    case PCM_PARAM_CHANNELS:
+        return SNDRV_PCM_HW_PARAM_CHANNELS;
+        break;
+    case PCM_PARAM_RATE:
+        return SNDRV_PCM_HW_PARAM_RATE;
+        break;
+    case PCM_PARAM_PERIOD_TIME:
+        return SNDRV_PCM_HW_PARAM_PERIOD_TIME;
+        break;
+    case PCM_PARAM_PERIOD_SIZE:
+        return SNDRV_PCM_HW_PARAM_PERIOD_SIZE;
+        break;
+    case PCM_PARAM_PERIOD_BYTES:
+        return SNDRV_PCM_HW_PARAM_PERIOD_BYTES;
+        break;
+    case PCM_PARAM_PERIODS:
+        return SNDRV_PCM_HW_PARAM_PERIODS;
+        break;
+    case PCM_PARAM_BUFFER_TIME:
+        return SNDRV_PCM_HW_PARAM_BUFFER_TIME;
+        break;
+    case PCM_PARAM_BUFFER_SIZE:
+        return SNDRV_PCM_HW_PARAM_BUFFER_SIZE;
+        break;
+    case PCM_PARAM_BUFFER_BYTES:
+        return SNDRV_PCM_HW_PARAM_BUFFER_BYTES;
+        break;
+    case PCM_PARAM_TICK_TIME:
+        return SNDRV_PCM_HW_PARAM_TICK_TIME;
+        break;
+
+    default:
+        return -1;
+    }
+}
+
+struct pcm_mask *pcm_params_get_mask(struct pcm_params *pcm_params,
+                                     enum pcm_param param)
+{
+    int p;
+    struct snd_pcm_hw_params *params = (struct snd_pcm_hw_params *)pcm_params;
+    if (params == NULL) {
+        return NULL;
+    }
+
+    p = pcm_param_to_alsa(param);
+    if (p < 0 || !param_is_mask(p)) {
+        return NULL;
+    }
+
+    return (struct pcm_mask *)param_to_mask(params, p);
+}
+
+unsigned int pcm_params_get_min(struct pcm_params *pcm_params,
+                                enum pcm_param param)
+{
+    struct snd_pcm_hw_params *params = (struct snd_pcm_hw_params *)pcm_params;
+    int p;
+
+    if (!params)
+        return 0;
+
+    p = pcm_param_to_alsa(param);
+    if (p < 0)
+        return 0;
+
+    return param_get_min(params, p);
+}
+
+void pcm_params_set_min(struct pcm_params *pcm_params,
+                                enum pcm_param param, unsigned int val)
+{
+    struct snd_pcm_hw_params *params = (struct snd_pcm_hw_params *)pcm_params;
+    int p;
+
+    if (!params)
+        return;
+
+    p = pcm_param_to_alsa(param);
+    if (p < 0)
+        return;
+
+    param_set_min(params, p, val);
+}
+
+unsigned int pcm_params_get_max(struct pcm_params *pcm_params,
+                                enum pcm_param param)
+{
+    struct snd_pcm_hw_params *params = (struct snd_pcm_hw_params *)pcm_params;
+    int p;
+
+    if (!params)
+        return 0;
+
+    p = pcm_param_to_alsa(param);
+    if (p < 0)
+        return 0;
+
+    return param_get_max(params, p);
+}
+
+void pcm_params_set_max(struct pcm_params *pcm_params,
+                                enum pcm_param param, unsigned int val)
+{
+    struct snd_pcm_hw_params *params = (struct snd_pcm_hw_params *)pcm_params;
+    int p;
+
+    if (!params)
+        return;
+
+    p = pcm_param_to_alsa(param);
+    if (p < 0)
+        return;
+
+    param_set_max(params, p, val);
+}
+
+static int pcm_mask_test(struct pcm_mask *m, unsigned int index)
+{
+    const unsigned int bitshift = 5; /* for 32 bit integer */
+    const unsigned int bitmask = (1 << bitshift) - 1;
+    unsigned int element;
+
+    element = index >> bitshift;
+    if (element >= ARRAY_SIZE(m->bits))
+        return 0; /* for safety, but should never occur */
+    return (m->bits[element] >> (index & bitmask)) & 1;
+}
+
+static int pcm_mask_to_string(struct pcm_mask *m, char *string, unsigned int size,
+                              char *mask_name,
+                              const char * const *bit_array_name, size_t bit_array_size)
+{
+    unsigned int i;
+    unsigned int offset = 0;
+
+    if (m == NULL)
+        return 0;
+    if (bit_array_size < 32) {
+        STRLOG(string, offset, size, "%12s:\t%#08x\n", mask_name, m->bits[0]);
+    } else { /* spans two or more bitfields, print with an array index */
+        for (i = 0; i < (bit_array_size + 31) >> 5; ++i) {
+            STRLOG(string, offset, size, "%9s[%d]:\t%#08x\n",
+                   mask_name, i, m->bits[i]);
+        }
+    }
+    for (i = 0; i < bit_array_size; ++i) {
+        if (pcm_mask_test(m, i)) {
+            STRLOG(string, offset, size, "%12s \t%s\n", "", bit_array_name[i]);
+        }
+    }
+    return offset;
+}
+
+int pcm_params_to_string(struct pcm_params *params, char *string, unsigned int size)
+{
+    struct pcm_mask *m;
+    unsigned int min, max;
+    unsigned int clipoffset, offset;
+
+    m = pcm_params_get_mask(params, PCM_PARAM_ACCESS);
+    offset = pcm_mask_to_string(m, string, size,
+                                 "Access", access_lookup, ARRAY_SIZE(access_lookup));
+    m = pcm_params_get_mask(params, PCM_PARAM_FORMAT);
+    clipoffset = offset > size ? size : offset;
+    offset += pcm_mask_to_string(m, string + clipoffset, size - clipoffset,
+                                 "Format", format_lookup, ARRAY_SIZE(format_lookup));
+    m = pcm_params_get_mask(params, PCM_PARAM_SUBFORMAT);
+    clipoffset = offset > size ? size : offset;
+    offset += pcm_mask_to_string(m, string + clipoffset, size - clipoffset,
+                                 "Subformat", subformat_lookup, ARRAY_SIZE(subformat_lookup));
+    min = pcm_params_get_min(params, PCM_PARAM_RATE);
+    max = pcm_params_get_max(params, PCM_PARAM_RATE);
+    STRLOG(string, offset, size, "        Rate:\tmin=%uHz\tmax=%uHz\n", min, max);
+    min = pcm_params_get_min(params, PCM_PARAM_CHANNELS);
+    max = pcm_params_get_max(params, PCM_PARAM_CHANNELS);
+    STRLOG(string, offset, size, "    Channels:\tmin=%u\t\tmax=%u\n", min, max);
+    min = pcm_params_get_min(params, PCM_PARAM_SAMPLE_BITS);
+    max = pcm_params_get_max(params, PCM_PARAM_SAMPLE_BITS);
+    STRLOG(string, offset, size, " Sample bits:\tmin=%u\t\tmax=%u\n", min, max);
+    min = pcm_params_get_min(params, PCM_PARAM_PERIOD_SIZE);
+    max = pcm_params_get_max(params, PCM_PARAM_PERIOD_SIZE);
+    STRLOG(string, offset, size, " Period size:\tmin=%u\t\tmax=%u\n", min, max);
+    min = pcm_params_get_min(params, PCM_PARAM_PERIODS);
+    max = pcm_params_get_max(params, PCM_PARAM_PERIODS);
+    STRLOG(string, offset, size, "Period count:\tmin=%u\t\tmax=%u\n", min, max);
+    return offset;
+}
+
+int pcm_params_format_test(struct pcm_params *params, enum pcm_format format)
+{
+    unsigned int alsa_format = pcm_format_to_alsa(format);
+
+    if (alsa_format == SNDRV_PCM_FORMAT_S16_LE && format != PCM_FORMAT_S16_LE)
+        return 0; /* caution: format not recognized is equivalent to S16_LE */
+    return pcm_mask_test(pcm_params_get_mask(params, PCM_PARAM_FORMAT), alsa_format);
+}
+
+int pcm_close(struct pcm *pcm)
+{
+    if (pcm == &bad_pcm)
+        return 0;
+
+    pcm_hw_munmap_status(pcm);
+
+    if (pcm->flags & PCM_MMAP) {
+        pcm_stop(pcm);
+        munmap(pcm->mmap_buffer, pcm_frames_to_bytes(pcm, pcm->buffer_size));
+    }
+
+    if (pcm->fd >= 0)
+        close(pcm->fd);
+    pcm->prepared = 0;
+    pcm->running = 0;
+    pcm->buffer_size = 0;
+    pcm->fd = -1;
+    free(pcm);
+    return 0;
+}
+
+struct pcm *pcm_open(unsigned int card, unsigned int device,
+                     unsigned int flags, struct pcm_config *config)
+{
+    struct pcm *pcm;
+    struct snd_pcm_info info;
+    struct snd_pcm_hw_params params;
+    struct snd_pcm_sw_params sparams;
+    char fn[256];
+    int rc;
+
+    pcm = calloc(1, sizeof(struct pcm));
+    if (!pcm || !config)
+        return &bad_pcm; /* TODO: could support default config here */
+
+    pcm->config = *config;
+
+    snprintf(fn, sizeof(fn), "/dev/snd/pcmC%uD%u%c", card, device,
+             flags & PCM_IN ? 'c' : 'p');
+
+    pcm->flags = flags;
+    pcm->fd = open(fn, O_RDWR|O_NONBLOCK);
+    if (pcm->fd < 0) {
+        oops(pcm, errno, "cannot open device '%s'", fn);
+        return pcm;
+    }
+
+    if (fcntl(pcm->fd, F_SETFL, fcntl(pcm->fd, F_GETFL) &
+              ~O_NONBLOCK) < 0) {
+        oops(pcm, errno, "failed to reset blocking mode '%s'", fn);
+        goto fail_close;
+    }
+
+    if (ioctl(pcm->fd, SNDRV_PCM_IOCTL_INFO, &info)) {
+        oops(pcm, errno, "cannot get info");
+        goto fail_close;
+    }
+    pcm->subdevice = info.subdevice;
+
+    param_init(&params);
+    param_set_mask(&params, SNDRV_PCM_HW_PARAM_FORMAT,
+                   pcm_format_to_alsa(config->format));
+    param_set_mask(&params, SNDRV_PCM_HW_PARAM_SUBFORMAT,
+                   SNDRV_PCM_SUBFORMAT_STD);
+    param_set_min(&params, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, config->period_size);
+    param_set_int(&params, SNDRV_PCM_HW_PARAM_SAMPLE_BITS,
+                  pcm_format_to_bits(config->format));
+    param_set_int(&params, SNDRV_PCM_HW_PARAM_FRAME_BITS,
+                  pcm_format_to_bits(config->format) * config->channels);
+    param_set_int(&params, SNDRV_PCM_HW_PARAM_CHANNELS,
+                  config->channels);
+    param_set_int(&params, SNDRV_PCM_HW_PARAM_PERIODS, config->period_count);
+    param_set_int(&params, SNDRV_PCM_HW_PARAM_RATE, config->rate);
+
+    if (flags & PCM_NOIRQ) {
+        if (!(flags & PCM_MMAP)) {
+            oops(pcm, -EINVAL, "noirq only currently supported with mmap().");
+            goto fail_close;
+        }
+
+        params.flags |= SNDRV_PCM_HW_PARAMS_NO_PERIOD_WAKEUP;
+        pcm->noirq_frames_per_msec = config->rate / 1000;
+    }
+
+    if (flags & PCM_MMAP)
+        param_set_mask(&params, SNDRV_PCM_HW_PARAM_ACCESS,
+                       SNDRV_PCM_ACCESS_MMAP_INTERLEAVED);
+    else
+        param_set_mask(&params, SNDRV_PCM_HW_PARAM_ACCESS,
+                       SNDRV_PCM_ACCESS_RW_INTERLEAVED);
+
+    if (ioctl(pcm->fd, SNDRV_PCM_IOCTL_HW_PARAMS, &params)) {
+        oops(pcm, errno, "cannot set hw params");
+        goto fail_close;
+    }
+
+    /* get our refined hw_params */
+    config->period_size = param_get_int(&params, SNDRV_PCM_HW_PARAM_PERIOD_SIZE);
+    config->period_count = param_get_int(&params, SNDRV_PCM_HW_PARAM_PERIODS);
+    pcm->buffer_size = config->period_count * config->period_size;
+
+    if (flags & PCM_MMAP) {
+        pcm->mmap_buffer = mmap(NULL, pcm_frames_to_bytes(pcm, pcm->buffer_size),
+                                PROT_READ | PROT_WRITE, MAP_FILE | MAP_SHARED, pcm->fd, 0);
+        if (pcm->mmap_buffer == MAP_FAILED) {
+            oops(pcm, -errno, "failed to mmap buffer %d bytes\n",
+                 pcm_frames_to_bytes(pcm, pcm->buffer_size));
+            goto fail_close;
+        }
+    }
+
+    memset(&sparams, 0, sizeof(sparams));
+    sparams.tstamp_mode = SNDRV_PCM_TSTAMP_ENABLE;
+    sparams.period_step = 1;
+
+    if (!config->start_threshold) {
+        if (pcm->flags & PCM_IN)
+            pcm->config.start_threshold = sparams.start_threshold = 1;
+        else
+            pcm->config.start_threshold = sparams.start_threshold =
+                config->period_count * config->period_size / 2;
+    } else
+        sparams.start_threshold = config->start_threshold;
+
+    /* pick a high stop threshold - todo: does this need further tuning */
+    if (!config->stop_threshold) {
+        if (pcm->flags & PCM_IN)
+            pcm->config.stop_threshold = sparams.stop_threshold =
+                config->period_count * config->period_size * 10;
+        else
+            pcm->config.stop_threshold = sparams.stop_threshold =
+                config->period_count * config->period_size;
+    }
+    else
+        sparams.stop_threshold = config->stop_threshold;
+
+    if (!pcm->config.avail_min) {
+        if (pcm->flags & PCM_MMAP)
+            pcm->config.avail_min = sparams.avail_min = pcm->config.period_size;
+        else
+            pcm->config.avail_min = sparams.avail_min = 1;
+    } else
+        sparams.avail_min = config->avail_min;
+
+    sparams.xfer_align = config->period_size / 2; /* needed for old kernels */
+    sparams.silence_threshold = config->silence_threshold;
+    sparams.silence_size = config->silence_size;
+    pcm->boundary = sparams.boundary = pcm->buffer_size;
+
+    while (pcm->boundary * 2 <= INT_MAX - pcm->buffer_size)
+        pcm->boundary *= 2;
+
+    if (ioctl(pcm->fd, SNDRV_PCM_IOCTL_SW_PARAMS, &sparams)) {
+        oops(pcm, errno, "cannot set sw params");
+        goto fail;
+    }
+
+    rc = pcm_hw_mmap_status(pcm);
+    if (rc < 0) {
+        oops(pcm, rc, "mmap status failed");
+        goto fail;
+    }
+
+#ifdef SNDRV_PCM_IOCTL_TTSTAMP
+    if (pcm->flags & PCM_MONOTONIC) {
+        int arg = SNDRV_PCM_TSTAMP_TYPE_MONOTONIC;
+        rc = ioctl(pcm->fd, SNDRV_PCM_IOCTL_TTSTAMP, &arg);
+        if (rc < 0) {
+            oops(pcm, rc, "cannot set timestamp type");
+            goto fail;
+        }
+    }
+#endif
+
+    pcm->underruns = 0;
+    return pcm;
+
+fail:
+    if (flags & PCM_MMAP)
+        munmap(pcm->mmap_buffer, pcm_frames_to_bytes(pcm, pcm->buffer_size));
+fail_close:
+    close(pcm->fd);
+    pcm->fd = -1;
+    return pcm;
+}
+
+int pcm_is_ready(struct pcm *pcm)
+{
+    return pcm->fd >= 0;
+}
+
+int pcm_prepare(struct pcm *pcm)
+{
+    if (pcm->prepared)
+        return 0;
+
+    if (ioctl(pcm->fd, SNDRV_PCM_IOCTL_PREPARE) < 0)
+        return oops(pcm, errno, "cannot prepare channel");
+
+    pcm->prepared = 1;
+    return 0;
+}
+
+int pcm_start(struct pcm *pcm)
+{
+    int prepare_error = pcm_prepare(pcm);
+    if (prepare_error)
+        return prepare_error;
+
+    if (pcm->flags & PCM_MMAP)
+	    pcm_sync_ptr(pcm, 0);
+
+    if (ioctl(pcm->fd, SNDRV_PCM_IOCTL_START) < 0)
+        return oops(pcm, errno, "cannot start channel");
+
+    pcm->running = 1;
+    return 0;
+}
+
+int pcm_stop(struct pcm *pcm)
+{
+    if (ioctl(pcm->fd, SNDRV_PCM_IOCTL_DROP) < 0)
+        return oops(pcm, errno, "cannot stop channel");
+
+    pcm->prepared = 0;
+    pcm->running = 0;
+    return 0;
+}
+
+static inline int pcm_mmap_playback_avail(struct pcm *pcm)
+{
+    int avail;
+
+    avail = pcm->mmap_status->hw_ptr + pcm->buffer_size - pcm->mmap_control->appl_ptr;
+
+    if (avail < 0)
+        avail += pcm->boundary;
+    else if (avail > (int)pcm->boundary)
+        avail -= pcm->boundary;
+
+    return avail;
+}
+
+static inline int pcm_mmap_capture_avail(struct pcm *pcm)
+{
+    int avail = pcm->mmap_status->hw_ptr - pcm->mmap_control->appl_ptr;
+    if (avail < 0)
+        avail += pcm->boundary;
+    return avail;
+}
+
+int pcm_mmap_avail(struct pcm *pcm)
+{
+    pcm_sync_ptr(pcm, SNDRV_PCM_SYNC_PTR_HWSYNC);
+    if (pcm->flags & PCM_IN)
+        return pcm_mmap_capture_avail(pcm);
+    else
+        return pcm_mmap_playback_avail(pcm);
+}
+
+static void pcm_mmap_appl_forward(struct pcm *pcm, int frames)
+{
+    unsigned int appl_ptr = pcm->mmap_control->appl_ptr;
+    appl_ptr += frames;
+
+    /* check for boundary wrap */
+    if (appl_ptr > pcm->boundary)
+         appl_ptr -= pcm->boundary;
+    pcm->mmap_control->appl_ptr = appl_ptr;
+}
+
+int pcm_mmap_begin(struct pcm *pcm, void **areas, unsigned int *offset,
+                   unsigned int *frames)
+{
+    unsigned int continuous, copy_frames, avail;
+
+    /* return the mmap buffer */
+    *areas = pcm->mmap_buffer;
+
+    /* and the application offset in frames */
+    *offset = pcm->mmap_control->appl_ptr % pcm->buffer_size;
+
+    avail = pcm_mmap_avail(pcm);
+    if (avail > pcm->buffer_size)
+        avail = pcm->buffer_size;
+    continuous = pcm->buffer_size - *offset;
+
+    /* we can only copy frames if the are availabale and continuos */
+    copy_frames = *frames;
+    if (copy_frames > avail)
+        copy_frames = avail;
+    if (copy_frames > continuous)
+        copy_frames = continuous;
+    *frames = copy_frames;
+
+    return 0;
+}
+
+int pcm_mmap_commit(struct pcm *pcm, unsigned int offset __attribute__((unused)), unsigned int frames)
+{
+    /* update the application pointer in userspace and kernel */
+    pcm_mmap_appl_forward(pcm, frames);
+    pcm_sync_ptr(pcm, 0);
+
+    return frames;
+}
+
+int pcm_avail_update(struct pcm *pcm)
+{
+    pcm_sync_ptr(pcm, 0);
+    return pcm_mmap_avail(pcm);
+}
+
+int pcm_state(struct pcm *pcm)
+{
+    int err = pcm_sync_ptr(pcm, 0);
+    if (err < 0)
+        return err;
+
+    return pcm->mmap_status->state;
+}
+
+int pcm_set_avail_min(struct pcm *pcm, int avail_min)
+{
+    if ((~pcm->flags) & (PCM_MMAP | PCM_NOIRQ))
+        return -ENOSYS;
+
+    pcm->config.avail_min = avail_min;
+    return 0;
+}
+
+int pcm_wait(struct pcm *pcm, int timeout)
+{
+    struct pollfd pfd;
+    int err;
+
+    pfd.fd = pcm->fd;
+    pfd.events = POLLOUT | POLLERR | POLLNVAL;
+
+    do {
+        /* let's wait for avail or timeout */
+        err = poll(&pfd, 1, timeout);
+        if (err < 0)
+            return -errno;
+
+        /* timeout ? */
+        if (err == 0)
+            return 0;
+
+        /* have we been interrupted ? */
+        if (errno == -EINTR)
+            continue;
+
+        /* check for any errors */
+        if (pfd.revents & (POLLERR | POLLNVAL)) {
+            switch (pcm_state(pcm)) {
+            case PCM_STATE_XRUN:
+                return -EPIPE;
+            case PCM_STATE_SUSPENDED:
+                return -ESTRPIPE;
+            case PCM_STATE_DISCONNECTED:
+                return -ENODEV;
+            default:
+                return -EIO;
+            }
+        }
+    /* poll again if fd not ready for IO */
+    } while (!(pfd.revents & (POLLIN | POLLOUT)));
+
+    return 1;
+}
+
+int pcm_get_poll_fd(struct pcm *pcm)
+{
+    return pcm->fd;
+}
+
+int pcm_mmap_transfer(struct pcm *pcm, const void *buffer, unsigned int bytes)
+{
+    int err = 0, frames, avail;
+    unsigned int offset = 0, count;
+
+    if (bytes == 0)
+        return 0;
+
+    count = pcm_bytes_to_frames(pcm, bytes);
+
+    while (count > 0) {
+
+        /* get the available space for writing new frames */
+        avail = pcm_avail_update(pcm);
+        if (avail < 0) {
+            fprintf(stderr, "cannot determine available mmap frames");
+            return err;
+        }
+
+        /* start the audio if we reach the threshold */
+	    if (!pcm->running &&
+            (pcm->buffer_size - avail) >= pcm->config.start_threshold) {
+            if (pcm_start(pcm) < 0) {
+               fprintf(stderr, "start error: hw 0x%x app 0x%x avail 0x%x\n",
+                    (unsigned int)pcm->mmap_status->hw_ptr,
+                    (unsigned int)pcm->mmap_control->appl_ptr,
+                    avail);
+                return -errno;
+            }
+            pcm->wait_for_avail_min = 0;
+        }
+
+        /* sleep until we have space to write new frames */
+        if (pcm->running) {
+            /* enable waiting for avail_min threshold when less frames than we have to write
+             * are available. */
+            if (!pcm->wait_for_avail_min && (count > (unsigned int)avail))
+                pcm->wait_for_avail_min = 1;
+
+            if (pcm->wait_for_avail_min && (avail < pcm->config.avail_min)) {
+                int time = -1;
+
+                /* disable waiting for avail_min threshold to allow small amounts of data to be
+                 * written without waiting as long as there is enough room in buffer. */
+                pcm->wait_for_avail_min = 0;
+
+                if (pcm->flags & PCM_NOIRQ)
+                    time = (pcm->config.avail_min - avail) / pcm->noirq_frames_per_msec;
+
+                err = pcm_wait(pcm, time);
+                if (err < 0) {
+                    pcm->prepared = 0;
+                    pcm->running = 0;
+                    oops(pcm, err, "wait error: hw 0x%x app 0x%x avail 0x%x\n",
+                        (unsigned int)pcm->mmap_status->hw_ptr,
+                        (unsigned int)pcm->mmap_control->appl_ptr,
+                        avail);
+                    pcm->mmap_control->appl_ptr = 0;
+                    return err;
+                }
+                continue;
+            }
+        }
+
+        frames = count;
+        if (frames > avail)
+            frames = avail;
+
+        if (!frames)
+            break;
+
+        /* copy frames from buffer */
+        frames = pcm_mmap_transfer_areas(pcm, (void *)buffer, offset, frames);
+        if (frames < 0) {
+            fprintf(stderr, "write error: hw 0x%x app 0x%x avail 0x%x\n",
+                    (unsigned int)pcm->mmap_status->hw_ptr,
+                    (unsigned int)pcm->mmap_control->appl_ptr,
+                    avail);
+            return frames;
+        }
+
+        offset += frames;
+        count -= frames;
+    }
+
+    return 0;
+}
+
+int pcm_mmap_write(struct pcm *pcm, const void *data, unsigned int count)
+{
+    if ((~pcm->flags) & (PCM_OUT | PCM_MMAP))
+        return -ENOSYS;
+
+    return pcm_mmap_transfer(pcm, (void *)data, count);
+}
+
+int pcm_mmap_read(struct pcm *pcm, void *data, unsigned int count)
+{
+    if ((~pcm->flags) & (PCM_IN | PCM_MMAP))
+        return -ENOSYS;
+
+    return pcm_mmap_transfer(pcm, data, count);
+}
+
+int pcm_ioctl(struct pcm *pcm, int request, ...)
+{
+    va_list ap;
+    void * arg;
+
+    if (!pcm_is_ready(pcm))
+        return -1;
+
+    va_start(ap, request);
+    arg = va_arg(ap, void *);
+    va_end(ap);
+
+    return ioctl(pcm->fd, request, arg);
+}
diff --git a/hifi/xaf/host-apf/playback/xa_playback.c b/hifi/xaf/host-apf/playback/xa_playback.c
new file mode 100644
index 0000000..2a8eefd
--- /dev/null
+++ b/hifi/xaf/host-apf/playback/xa_playback.c
@@ -0,0 +1,366 @@
+/*******************************************************************************
+* Copyright (C) 2018 Cadence Design Systems, Inc.
+* 
+* Permission is hereby granted, free of charge, to any person obtaining
+* a copy of this software and associated documentation files (the
+* "Software"), to use this Software with Cadence processor cores only and 
+* not with any other processors and platforms, subject to
+* the following conditions:
+* 
+* The above copyright notice and this permission notice shall be included
+* in all copies or substantial portions of the Software.
+* 
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+******************************************************************************/
+
+#define MODULE_TAG                      PLYBK
+
+#include <tinyalsa/asoundlib.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <string.h>
+#include <signal.h>
+#include <sys/ioctl.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <errno.h>
+
+#include "xf.h"
+#include "xa_playback.h"
+
+#if 0
+#define ID_RIFF 0x46464952
+#define ID_WAVE 0x45564157
+#define ID_FMT  0x20746d66
+#define ID_DATA 0x61746164
+
+#define HIFI_MISC_IOCTL_PCM_GAIN _IOW('A',  0x7b, struct misc_io_pcm_buf_param)
+#define HIFI_DSP_MISC_DRIVER "/dev/hifi_misc"
+struct misc_io_pcm_buf_param {
+	uint64_t			buf;			
+	uint32_t			buf_size;		
+};
+
+struct riff_wave_header {
+    uint32_t riff_id;
+    uint32_t riff_sz;
+    uint32_t wave_id;
+};
+
+struct chunk_header {
+    uint32_t id;
+    uint32_t sz;
+};
+
+struct chunk_fmt {
+    uint16_t audio_format;
+    uint16_t num_channels;
+    uint32_t sample_rate;
+    uint32_t byte_rate;
+    uint16_t block_align;
+    uint16_t bits_per_sample;
+};
+
+static int s_close = 0;
+
+void play_sample(FILE *file, unsigned int card, unsigned int device, unsigned int channels,
+                 unsigned int rate, unsigned int bits, unsigned int period_size,
+                 unsigned int period_count);
+
+void stream_close(int sig)
+{
+    /* allow the stream to be closed gracefully */
+    signal(sig, SIG_IGN);
+    s_close = 1;
+}
+#endif
+
+#if 0
+int main(int argc, char **argv)
+{
+    FILE *file;
+    struct riff_wave_header riff_wave_header;
+    struct chunk_header chunk_header;
+    struct chunk_fmt chunk_fmt;
+    unsigned int device = 0;
+    unsigned int card = 0;
+    unsigned int period_size = 1024;
+    unsigned int period_count = 4;
+    char *filename;
+    int more_chunks = 1;
+
+    if (argc < 2) {
+        fprintf(stderr, "Usage: %s file.wav [-D card] [-d device] [-p period_size]"
+                " [-n n_periods] \n", argv[0]);
+        return 1;
+    }
+
+    filename = argv[1];
+    file = fopen(filename, "rb");
+    if (!file) {
+        fprintf(stderr, "Unable to open file '%s'\n", filename);
+        return 1;
+    }
+
+    fread(&riff_wave_header, sizeof(riff_wave_header), 1, file);
+    if ((riff_wave_header.riff_id != ID_RIFF) ||
+        (riff_wave_header.wave_id != ID_WAVE)) {
+        fprintf(stderr, "Error: '%s' is not a riff/wave file\n", filename);
+        fclose(file);
+        return 1;
+    }
+
+    do {
+        fread(&chunk_header, sizeof(chunk_header), 1, file);
+
+        switch (chunk_header.id) {
+        case ID_FMT:
+            fread(&chunk_fmt, sizeof(chunk_fmt), 1, file);
+            /* If the format header is larger, skip the rest */
+            if (chunk_header.sz > sizeof(chunk_fmt))
+                fseek(file, chunk_header.sz - sizeof(chunk_fmt), SEEK_CUR);
+            break;
+        case ID_DATA:
+            /* Stop looking for chunks */
+            more_chunks = 0;
+            break;
+        default:
+            /* Unknown chunk, skip bytes */
+            fseek(file, chunk_header.sz, SEEK_CUR);
+        }
+    } while (more_chunks);
+
+    /* parse command line arguments */
+    argv += 2;
+    while (*argv) {
+        if (strcmp(*argv, "-d") == 0) {
+            argv++;
+            if (*argv)
+                device = atoi(*argv);
+        }
+        if (strcmp(*argv, "-p") == 0) {
+            argv++;
+            if (*argv)
+                period_size = atoi(*argv);
+        }
+        if (strcmp(*argv, "-n") == 0) {
+            argv++;
+            if (*argv)
+                period_count = atoi(*argv);
+        }
+        if (strcmp(*argv, "-D") == 0) {
+            argv++;
+            if (*argv)
+                card = atoi(*argv);
+        }
+        if (*argv)
+            argv++;
+    }
+
+    play_sample(file, card, device, chunk_fmt.num_channels, chunk_fmt.sample_rate,
+                chunk_fmt.bits_per_sample, period_size, period_count);
+
+    fclose(file);
+
+    return 0;
+}
+#endif
+
+static int check_param(struct pcm_params *params, unsigned int param, unsigned int value,
+                       char *param_name, char *param_unit)
+{
+    unsigned int min;
+    unsigned int max;
+    int is_within_bounds = 1;
+
+    min = pcm_params_get_min(params, param);
+    if (value < min) {
+        TRACE(ERROR, _x("%s is %u%s, device only supports >= %u%s\n"), param_name, value,
+                param_unit, min, param_unit);
+        is_within_bounds = 0;
+    }
+
+    max = pcm_params_get_max(params, param);
+    if (value > max) {
+        TRACE(ERROR, _x("%s is %u%s, device only supports <= %u%s\n"), param_name, value,
+                param_unit, max, param_unit);
+        is_within_bounds = 0;
+    }
+
+    return is_within_bounds;
+}
+
+static int sample_is_playable(unsigned int card, unsigned int device, unsigned int channels,
+                              unsigned int rate, unsigned int bits, unsigned int period_size,
+                              unsigned int period_count)
+{
+    struct pcm_params *params;
+    int can_play;
+
+    params = pcm_params_get(card, device, PCM_OUT);
+    if (params == NULL) {
+        TRACE(ERROR, _x("Unable to open PCM device %u.\n"), device);
+        return 0;
+    }
+
+    can_play = check_param(params, PCM_PARAM_RATE, rate, "Sample rate", "Hz");
+    can_play &= check_param(params, PCM_PARAM_CHANNELS, channels, "Sample", " channels");
+    can_play &= check_param(params, PCM_PARAM_SAMPLE_BITS, bits, "Bitrate", " bits");
+    can_play &= check_param(params, PCM_PARAM_PERIOD_SIZE, period_size, "Period size", "Hz");
+    can_play &= check_param(params, PCM_PARAM_PERIODS, period_count, "Period count", "Hz");
+
+    pcm_params_free(params);
+
+    return can_play;
+}
+
+void *xa_playback_open(unsigned int card, 
+		       unsigned int device, 
+		       unsigned int channels,
+                       unsigned int rate, 
+		       unsigned int bits, 
+		       unsigned int period_size,
+                       unsigned int period_count)
+{
+    struct pcm_config config;
+    struct pcm *pcm;
+
+    memset(&config, 0, sizeof(config));
+    config.channels = channels;
+    config.rate = rate;
+    config.period_size = period_size;
+    config.period_count = period_count;
+    if (bits == 32)
+        config.format = PCM_FORMAT_S32_LE;
+    else if (bits == 16)
+        config.format = PCM_FORMAT_S16_LE;
+    config.start_threshold = 0;
+    config.stop_threshold = 0;
+    config.silence_threshold = 0;
+
+    if (!sample_is_playable(card, device, channels, rate, bits, period_size, period_count)) {
+        return NULL;
+    }
+
+    pcm = pcm_open(card, device, PCM_OUT, &config);
+    if (!pcm || !pcm_is_ready(pcm)) {
+        TRACE(ERROR, _x("Unable to open PCM device %u (%s)\n"),
+                device, pcm_get_error(pcm));
+        return NULL;
+    }
+
+    return pcm;
+}
+
+int xa_playback_buf(void *handle, 
+	 	    const void *data, 
+ 		    unsigned int nbytes)
+{
+    int err;
+
+    if (!handle || !data)
+	return XA_PLAYBACK_INVALID_PARAM;
+    
+    if (nbytes > 0) {
+        err = pcm_write(handle, data, nbytes);
+ 	
+	if (err == -EINVAL) return XA_PLAYBACK_INVALID_PARAM;  	
+	if (err == -EPIPE ) return XA_PLAYBACK_UNDERRUN;  	
+    }
+
+    return XA_PLAYBACK_OK;
+}
+
+int xa_playback_close(void *handle)
+{
+    return pcm_close(handle);
+}
+
+#if 0
+void play_sample(FILE *file, unsigned int card, unsigned int device, unsigned int channels,
+                 unsigned int rate, unsigned int bits, unsigned int period_size,
+                 unsigned int period_count)
+{
+    struct pcm_config config;
+    struct pcm *pcm;
+    char *buffer;
+    int size;
+    int num_read;
+    int hifi_dsp_fd;      
+    struct misc_io_pcm_buf_param pcmbuf;
+
+    hifi_dsp_fd = open(HIFI_DSP_MISC_DRIVER, O_RDWR, 0);
+    if(hifi_dsp_fd < 0){
+        printf("Error opening hifi dsp device %d", errno);
+    }
+
+    memset(&config, 0, sizeof(config));
+    config.channels = channels;
+    config.rate = rate;
+    config.period_size = period_size;
+    config.period_count = period_count;
+    if (bits == 32)
+        config.format = PCM_FORMAT_S32_LE;
+    else if (bits == 16)
+        config.format = PCM_FORMAT_S16_LE;
+    config.start_threshold = 0;
+    config.stop_threshold = 0;
+    config.silence_threshold = 0;
+
+    if (!sample_is_playable(card, device, channels, rate, bits, period_size, period_count)) {
+        return;
+    }
+
+    pcm = pcm_open(card, device, PCM_OUT, &config);
+    if (!pcm || !pcm_is_ready(pcm)) {
+        fprintf(stderr, "Unable to open PCM device %u (%s)\n",
+                device, pcm_get_error(pcm));
+        return;
+    }
+
+    size = pcm_frames_to_bytes(pcm, pcm_get_buffer_size(pcm));
+    buffer = malloc(size);
+    if (!buffer) {
+        fprintf(stderr, "Unable to allocate %d bytes\n", size);
+        free(buffer);
+        pcm_close(pcm);
+        return;
+    }
+
+    printf("Playing sample: %u ch, %u hz, %u bit\n", channels, rate, bits);
+
+    /* catch ctrl-c to shutdown cleanly */
+    signal(SIGINT, stream_close);
+
+    do {
+        num_read = fread(buffer, 1, size, file);
+
+        pcmbuf.buf =(uint64_t) buffer;
+        pcmbuf.buf_size = num_read;
+        if(hifi_dsp_fd) {
+      //      printf("ioctl send \n");
+            ioctl(hifi_dsp_fd,HIFI_MISC_IOCTL_PCM_GAIN, &pcmbuf);
+        //    printf("ioctl complete \n");
+        }
+
+        if (num_read > 0) {
+            if (pcm_write(pcm, buffer, num_read)) {
+                fprintf(stderr, "Error playing sample\n");
+                break;
+            }
+        }
+    } while (!s_close && num_read > 0);
+
+    free(buffer);
+    pcm_close(pcm);
+    close(hifi_dsp_fd);
+}
+#endif
diff --git a/hifi/xaf/host-apf/playback/xa_playback.h b/hifi/xaf/host-apf/playback/xa_playback.h
new file mode 100644
index 0000000..8e4b3c6
--- /dev/null
+++ b/hifi/xaf/host-apf/playback/xa_playback.h
@@ -0,0 +1,42 @@
+/*******************************************************************************
+* Copyright (C) 2018 Cadence Design Systems, Inc.
+* 
+* Permission is hereby granted, free of charge, to any person obtaining
+* a copy of this software and associated documentation files (the
+* "Software"), to use this Software with Cadence processor cores only and 
+* not with any other processors and platforms, subject to
+* the following conditions:
+* 
+* The above copyright notice and this permission notice shall be included
+* in all copies or substantial portions of the Software.
+* 
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+******************************************************************************/
+
+enum xa_playback_error {
+	XA_PLAYBACK_OK		  =  0,
+	XA_PLAYBACK_INVALID_PARAM = -1,
+	XA_PLAYBACK_UNDERRUN      = -2,
+};
+
+void *xa_playback_open(unsigned int card, 
+		       unsigned int device, 
+		       unsigned int channels,
+                       unsigned int rate, 
+		       unsigned int bits, 
+		       unsigned int period_size,
+                       unsigned int period_count);
+
+int xa_playback_buf(void *handle, 
+	 	    const void *data, 
+ 		    unsigned int nbytes);
+
+int xa_playback_close(void *handle);
+
diff --git a/hifi/xaf/host-apf/proxy/xaf-api.c b/hifi/xaf/host-apf/proxy/xaf-api.c
new file mode 100644
index 0000000..6b5862d
--- /dev/null
+++ b/hifi/xaf/host-apf/proxy/xaf-api.c
@@ -0,0 +1,597 @@
+/*******************************************************************************
+* Copyright (C) 2018 Cadence Design Systems, Inc.
+* 
+* Permission is hereby granted, free of charge, to any person obtaining
+* a copy of this software and associated documentation files (the
+* "Software"), to use this Software with Cadence processor cores only and 
+* not with any other processors and platforms, subject to
+* the following conditions:
+* 
+* The above copyright notice and this permission notice shall be included
+* in all copies or substantial portions of the Software.
+* 
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+******************************************************************************/
+#include "xf.h"
+#include "xaf-api.h"
+#include "xaf-structs.h"
+
+#ifdef XAF_HOSTLESS
+#include "xos-msgq-if.h"
+#endif
+#define MODULE_TAG                      DEVAPI
+
+/*******************************************************************************
+ * Tracing configuration
+ ******************************************************************************/
+
+TRACE_TAG(INIT, 1);
+TRACE_TAG(DEBUG, 1);
+TRACE_TAG(INFO, 1);
+
+#define XAF_4BYTE_ALIGN    4
+#define XAF_8BYTE_ALIGN    8
+#define XAF_32BYTE_ALIGN   32
+
+
+static void xaf_comp_response(xf_handle_t *h, xf_user_msg_t *msg)
+{
+    if (msg->opcode == XF_UNREGISTER)
+    {
+        /* ...component execution failed unexpectedly; die */
+        BUG(1, _x("[%p] Abnormal termination"), h);
+    }
+    else
+    {
+        /* ...submit response to asynchronous delivery queue */
+        xf_response_put(h, msg);
+    }
+}
+
+static XAF_ERR_CODE xaf_comp_add(xaf_comp_t **pp_comp_chain, xaf_comp_t *p_comp)
+{
+    XAF_CHK_PTR(pp_comp_chain);
+    XAF_CHK_PTR(p_comp);
+
+    p_comp->next   = *pp_comp_chain;
+    *pp_comp_chain = p_comp;
+
+    return XAF_NO_ERROR;
+}
+
+static XAF_ERR_CODE xaf_comp_post_init_config(xaf_adev_t *p_adev, xaf_comp_t *p_comp, void *p_msg)
+{
+    xf_proxy_t *p_proxy = &p_adev->proxy; 
+    xf_start_msg_t *smsg = p_msg;
+
+    p_comp->out_format.sample_rate   = smsg->sample_rate;
+    p_comp->out_format.channels      = smsg->channels;
+    p_comp->out_format.pcm_width     = smsg->pcm_width;
+    p_comp->out_format.input_length  = smsg->input_length;
+    p_comp->out_format.output_length = smsg->output_length;
+
+    TRACE(INFO, _b("Component[%x] Params: f=%d, c=%d, w=%d i=%d o=%d"), p_comp->handle.id, smsg->sample_rate, smsg->channels, smsg->pcm_width, smsg->input_length, smsg->output_length);
+
+    if (p_comp->noutbuf)
+    { 
+        XF_CHK_API(xf_pool_alloc(p_proxy, p_comp->noutbuf, smsg->output_length, XF_POOL_OUTPUT, &p_comp->outpool, XAF_MEM_ID_COMP,
+				p_adev->pxf_mem_malloc_fxn, p_adev->pxf_mem_free_fxn));
+    }
+
+    p_comp->init_done   = 1;
+    p_comp->comp_status = XAF_INIT_DONE;
+
+    return XAF_NO_ERROR;
+}
+
+#ifdef XAF_HOSTLESS
+XAF_ERR_CODE xaf_xos_start()
+{
+#if defined BOARD
+    xos_set_clock_freq(xtbsp_clock_freq_hz());
+#else
+    xos_set_clock_freq(XOS_CLOCK_FREQ);
+#endif
+
+    xos_start("main", 7, 0);
+#if XCHAL_NUM_TIMERS > 0
+    xos_start_system_timer(0, TICK_CYCLES);
+#endif
+
+    return XAF_NO_ERROR;
+}
+#endif
+
+XAF_ERR_CODE xaf_adev_open(void** pp_adev, s32 audio_frmwk_buf_size, s32 audio_comp_buf_size, xaf_mem_malloc_fxn_t mem_malloc, xaf_mem_free_fxn_t mem_free)
+{
+    int size;
+    void * pTmp;
+    xaf_adev_t *p_adev;
+    xf_proxy_t *p_proxy; 
+
+    XAF_CHK_PTR(pp_adev);
+    XAF_CHK_PTR(mem_malloc);
+    XAF_CHK_PTR(mem_free);
+
+    /* ...unused arg */
+    (void) audio_comp_buf_size;
+
+    //Memory allocation for adev struct pointer
+    size = (sizeof(xaf_adev_t) +(XAF_4BYTE_ALIGN-1));
+    pTmp = mem_malloc(size, XAF_MEM_ID_DEV);
+    XAF_CHK_PTR(pTmp);
+    memset(pTmp, 0, size);
+    
+    p_adev = (xaf_adev_t *) (((unsigned long)pTmp + (XAF_4BYTE_ALIGN-1))& ~(XAF_4BYTE_ALIGN-1));
+    p_adev->adev_ptr = pTmp;
+    *pp_adev = (void *)p_adev;
+
+    p_proxy = &p_adev->proxy;    
+
+    // Host side Memory allocation (BSS)
+    p_adev->pxf_mem_malloc_fxn = mem_malloc;
+    p_adev->pxf_mem_free_fxn  = mem_free;
+
+    size = sizeof(xaf_ap_utils_t)+(XAF_8BYTE_ALIGN-1);
+    p_adev->p_ap_utils = mem_malloc(size, XAF_MEM_ID_DEV);
+    XAF_CHK_PTR(p_adev->p_ap_utils);
+    //reset memory size stats
+    memset(p_adev->p_ap_utils, 0, sizeof(xaf_ap_utils_t));
+
+    // shmmem Memory allocation
+    p_adev->p_ap_utils->xf_cfg_remote_ipc_pool_size = audio_frmwk_buf_size; //minimum size 256 KB, mmap multiple is 0x1000
+
+    //DSP localbuf allocation is done in the DSP core; nothing to be done here
+
+    /* ...open DSP proxy - specify "DSP#0" */
+    XF_CHK_API(xf_proxy_init(p_proxy, 0, (void *)&p_adev->p_ap_utils->xf_cfg_remote_ipc_pool_size));
+
+    /* ...create auxiliary buffers pool for control commands */
+    XF_CHK_API(xf_pool_alloc(p_proxy, XAF_AUX_POOL_SIZE, XAF_AUX_POOL_MSG_LENGTH, XF_POOL_AUX, &p_proxy->aux, XAF_MEM_ID_DEV,
+				p_adev->pxf_mem_malloc_fxn, p_adev->pxf_mem_free_fxn));
+
+    return XAF_NO_ERROR;
+}
+
+XAF_ERR_CODE xaf_adev_close(void* adev_ptr, xaf_comp_flag flag)
+{
+    xaf_adev_t *p_adev;
+    xf_proxy_t *p_proxy;
+
+    XAF_CHK_PTR(adev_ptr);
+    p_adev = (xaf_adev_t *)adev_ptr;
+
+    /* ...unused arg */
+    (void) flag;
+
+    p_proxy = &p_adev->proxy;
+    if(p_proxy->aux != NULL)
+    {
+        xf_pool_free(p_proxy->aux, XAF_MEM_ID_DEV, p_adev->pxf_mem_free_fxn);
+    }
+
+    xf_proxy_close(p_proxy);
+
+    p_adev->pxf_mem_free_fxn(p_adev->p_ap_utils, XAF_MEM_ID_DEV);
+    p_adev->p_ap_utils = NULL;
+    p_adev->pxf_mem_free_fxn(p_adev->adev_ptr, XAF_MEM_ID_DEV);
+    p_adev->adev_ptr = NULL;
+
+    p_adev->pxf_mem_malloc_fxn = NULL;
+    p_adev->pxf_mem_free_fxn  = NULL;
+
+    return XAF_NO_ERROR;
+}
+
+XAF_ERR_CODE xaf_comp_create(void *adev_ptr, void **pp_comp, xf_id_t comp_id, u32 ninbuf, u32 noutbuf, void *pp_inbuf[], xaf_comp_type comp_type)
+{
+    xf_handle_t *p_handle;
+    void * pTmp;
+    int size;
+
+    xaf_adev_t *p_adev;
+    p_adev = (xaf_adev_t *)adev_ptr;
+    xaf_comp_t *p_comp;
+
+    XAF_CHK_PTR(p_adev);
+    XAF_CHK_PTR(pp_comp);
+    XAF_CHK_PTR(comp_id);
+    if (ninbuf) XAF_CHK_PTR(pp_inbuf);
+
+    XAF_CHK_RANGE(ninbuf, 0, XAF_MAX_INBUFS);
+    XAF_CHK_RANGE(noutbuf, 0, 1);
+    XAF_CHK_RANGE(comp_type, XAF_DECODER, XAF_POST_PROC); 
+
+    //Memory allocation for component struct pointer
+    size = (sizeof(xaf_comp_t) + (XAF_4BYTE_ALIGN-1));
+    pTmp = p_adev->pxf_mem_malloc_fxn(size, XAF_MEM_ID_COMP);
+    XAF_CHK_PTR(pTmp);
+    memset(pTmp, 0, size);
+    p_comp = (xaf_comp_t *) (((unsigned long)pTmp + (XAF_4BYTE_ALIGN-1))& ~(XAF_4BYTE_ALIGN-1));
+
+    p_comp->comp_ptr = pTmp;
+    *pp_comp = (void*)p_comp;
+
+    memset(p_comp, 0, sizeof(xaf_comp_t));
+    p_handle = &p_comp->handle;
+
+    /* ...create component instance (select core-0) */
+    XF_CHK_API(xf_open(&p_adev->proxy, p_handle, comp_id, 0, xaf_comp_response));
+
+    xaf_comp_add(&p_adev->comp_chain, p_comp);
+    
+    // Temporary solution in place of component chain handling
+    p_comp->p_adev = p_adev;
+    p_adev->n_comp += 1;
+    p_comp->ninbuf = ninbuf;
+
+    /* ...allocate input buffer */
+    if (ninbuf) 
+    {
+        xf_buffer_t *buf;
+        u32 i;
+        XF_CHK_API(xf_pool_alloc(&p_adev->proxy, ninbuf, XAF_INBUF_SIZE, XF_POOL_INPUT, &p_comp->inpool, XAF_MEM_ID_COMP,
+				p_adev->pxf_mem_malloc_fxn, p_adev->pxf_mem_free_fxn));
+        
+        for (i=0; i<ninbuf; i++)
+        {
+            buf         = xf_buffer_get(p_comp->inpool);
+            pp_inbuf[i] = xf_buffer_data(buf); 
+        }
+
+    }
+    p_comp->noutbuf = noutbuf;
+
+    p_comp->comp_type   = comp_type;
+    p_comp->comp_status = XAF_STARTING;
+
+    switch (comp_type)
+    {
+    case XAF_DECODER:
+    case XAF_ENCODER:
+    case XAF_PRE_PROC:
+    case XAF_POST_PROC:
+        p_comp->inp_ports = 1; p_comp->out_ports = 1;
+        break;
+    case XAF_MIXER:
+        p_comp->inp_ports = 4; p_comp->out_ports = 1;
+        break;
+    }
+
+    return XAF_NO_ERROR;
+}
+
+XAF_ERR_CODE xaf_comp_delete(void *comp_ptr)
+{
+    xaf_adev_t *p_adev;
+
+    xaf_comp_t *p_comp;
+    p_comp = (xaf_comp_t *)comp_ptr;
+
+    XAF_CHK_PTR(p_comp);
+
+    // Temporary solution in place of component chain handling
+    p_adev = (xaf_adev_t *)(p_comp->p_adev);
+    XF_CHK_ERR((p_adev->n_comp > 0), XAF_API_ERR);
+    p_adev->n_comp -= 1;
+
+
+    if (p_comp->inpool)  xf_pool_free(p_comp->inpool, XAF_MEM_ID_COMP, p_adev->pxf_mem_free_fxn);
+    if (p_comp->outpool) xf_pool_free(p_comp->outpool, XAF_MEM_ID_COMP, p_adev->pxf_mem_free_fxn);
+
+    xf_close(&p_comp->handle);
+   
+    /* ...tbd - remove from chain */
+    p_adev->pxf_mem_free_fxn(p_comp->comp_ptr, XAF_MEM_ID_COMP);
+    p_comp->comp_ptr = NULL;
+     
+    return XAF_NO_ERROR;
+}
+
+XAF_ERR_CODE xaf_comp_set_config(void *comp_ptr, s32 num_param, s32 *p_param)
+{
+    xaf_comp_t              *p_comp;
+    xf_user_msg_t           rmsg;
+    xf_set_param_msg_t     *smsg;
+    xf_handle_t            *p_handle;
+    s32                     i, j;
+
+    p_comp = (xaf_comp_t *)comp_ptr;
+
+    XAF_CHK_PTR(p_comp);
+    XAF_CHK_PTR(p_param);
+    XAF_CHK_RANGE(num_param, 1, XAF_MAX_CONFIG_PARAMS); 
+    
+    p_handle = &p_comp->handle;
+    XAF_CHK_PTR(p_handle);
+
+    /* ...set persistent stream characteristics */
+    smsg = xf_buffer_data(p_handle->aux);
+
+    j = 0;
+    for (i=0; i<num_param; i++)
+    {
+        smsg->item[i].id    = p_param[j++];
+        smsg->item[i].value = p_param[j++];
+    }
+    
+    /* ...pass command to the component */
+    /* ...tbd - command goes port 0 always, check if okay */
+    XF_CHK_API(xf_command(p_handle, 0, XF_SET_PARAM, smsg, sizeof(xf_set_param_item_t)*num_param));
+
+    /* ...wait until result is delivered */
+    XF_CHK_API(xf_response_get(p_handle, &rmsg));
+
+    /* ...make sure response is expected */
+    XF_CHK_ERR(rmsg.opcode == (u32) XF_SET_PARAM && rmsg.buffer == smsg, XAF_API_ERR);
+
+    return XAF_NO_ERROR;
+}
+
+XAF_ERR_CODE xaf_comp_get_config(void *comp_ptr, s32 num_param, s32 *p_param)
+{
+    xaf_comp_t             *p_comp;
+    xf_user_msg_t           rmsg;
+    xf_get_param_msg_t     *smsg;
+    xf_handle_t            *p_handle;
+    s32                     i;
+
+    p_comp = (xaf_comp_t *)comp_ptr;
+
+    XAF_CHK_PTR(p_comp);
+    XAF_CHK_PTR(p_param);
+    XAF_CHK_RANGE(num_param, 1, XAF_MAX_CONFIG_PARAMS); 
+    
+    p_handle = &p_comp->handle;
+    XAF_CHK_PTR(p_handle);
+
+    /* ...set persistent stream characteristics */
+    smsg = xf_buffer_data(p_handle->aux);
+
+    for (i=0; i<num_param; i++)
+    {
+        smsg->c.id[i] = p_param[i];
+    }
+    
+    /* ...pass command to the component */
+    /* ...tbd - command goes port 0 always, check if okay */
+    XF_CHK_API(xf_command(p_handle, 0, XF_GET_PARAM, smsg, XF_GET_PARAM_CMD_LEN(num_param)));
+
+    /* ...wait until result is delivered */
+    XF_CHK_API(xf_response_get(p_handle, &rmsg));
+
+    /* ...make sure response is expected */
+    XF_CHK_ERR(rmsg.opcode == (u32) XF_GET_PARAM && rmsg.buffer == smsg, XAF_API_ERR);
+
+    for (i=0; i<num_param; i++)
+    {
+        p_param[i] = smsg->r.value[i];
+    }
+
+    return XAF_NO_ERROR;
+}
+#ifdef XAF_HOSTLESS
+XAF_ERR_CODE xaf_comp_get_status(xaf_adev_t *p_adev, xaf_comp_t *p_comp, xaf_comp_status *p_status, void *p_info)
+#else
+XAF_ERR_CODE xaf_comp_get_status(void *adev_ptr, void *comp_ptr, xaf_comp_status *p_status, xaf_info_t *p_info)
+#endif
+{
+    xaf_adev_t *p_adev;
+    xaf_comp_t *p_comp;
+    xf_handle_t *p_handle;
+
+    p_adev = (xaf_adev_t *)adev_ptr;
+    p_comp = (xaf_comp_t *)comp_ptr;
+
+    XAF_CHK_PTR(p_comp);
+    XAF_CHK_PTR(p_status);
+    XAF_CHK_PTR(p_info);
+    if (!p_comp->init_done) XAF_CHK_PTR(p_adev);
+
+    p_handle = &p_comp->handle;
+
+    if (p_comp->pending_resp)
+    {
+        xf_user_msg_t rmsg;
+        /* ...wait until result is delivered */
+        XF_CHK_API(xf_response_get(p_handle, &rmsg)); 
+
+        if (rmsg.opcode == XF_FILL_THIS_BUFFER) 
+        {
+            if (rmsg.buffer == p_comp->start_buf)
+            {
+                XF_CHK_API(xaf_comp_post_init_config(p_adev, p_comp, p_comp->start_buf));
+            }
+            else 
+            {
+#ifdef XAF_HOSTLESS
+				s32 *p_buf = (s32 *) p_info;
+                p_buf[0] = (s32) rmsg.buffer;
+                p_buf[1] = (s32) rmsg.length;
+#else
+                p_info->buf = (void*) rmsg.buffer;
+                p_info->length = (s32) rmsg.length;
+#endif				
+                if (!p_comp->inpool && p_comp->outpool) p_comp->pending_resp--;
+
+                if (!rmsg.length) p_comp->comp_status = XAF_EXEC_DONE;
+                else
+                {
+                    p_comp->comp_status = XAF_OUTPUT_READY;
+                    p_comp->expect_out_cmd++;
+                }
+            }
+        }
+        else
+        {
+            /* ...make sure response is expected */
+            XF_CHK_ERR(rmsg.opcode == (u32) XF_EMPTY_THIS_BUFFER, XAF_API_ERR);            
+#ifdef XAF_HOSTLESS
+			s32 *p_buf = (s32 *) p_info;
+            p_buf[0] = (s32) rmsg.buffer;
+            p_buf[1] = (s32) rmsg.length;
+#else
+            p_info->buf = (void*) rmsg.buffer;
+			p_info->length = (s32) rmsg.length;
+#endif            
+            p_comp->pending_resp--;
+            
+            if (p_comp->input_over && rmsg.buffer == NULL) p_comp->comp_status = XAF_EXEC_DONE;
+            else p_comp->comp_status = XAF_NEED_INPUT;
+        }
+    }
+    else if ((p_comp->comp_status == XAF_STARTING && p_comp->start_cmd_issued) ||
+             (p_comp->comp_status == XAF_INIT_DONE && p_comp->exec_cmd_issued))
+    {
+        if (p_comp->inpool) p_comp->comp_status = XAF_NEED_INPUT;
+    }
+    
+    *p_status = p_comp->comp_status;
+    
+    return XAF_NO_ERROR;
+}
+
+XAF_ERR_CODE xaf_comp_process(void *adev_ptr, void *comp_ptr, void *p_buf, u32 length, xaf_comp_flag flag)
+{
+    xaf_adev_t *p_adev;
+    xaf_comp_t *p_comp;
+    xf_handle_t *p_handle;
+
+    p_adev = (xaf_adev_t *)adev_ptr;
+    p_comp = (xaf_comp_t *)comp_ptr;
+
+    XAF_CHK_PTR(p_comp);
+    if (!p_comp->init_done) XAF_CHK_PTR(p_adev);
+    XAF_CHK_RANGE(flag, XAF_START_FLAG, XAF_NEED_OUTPUT_FLAG);
+    if (flag == XAF_INPUT_READY_FLAG) XAF_CHK_RANGE(length, 0, XAF_INBUF_SIZE);
+
+    p_handle = &p_comp->handle;
+    
+    switch (flag)
+    {
+    case XAF_START_FLAG:
+        if (p_comp->start_cmd_issued)
+            break;
+        else
+        {
+            p_comp->start_buf = xf_buffer_data(p_handle->aux);
+            XF_CHK_API(xf_command(p_handle, (p_comp->inp_ports), XF_FILL_THIS_BUFFER, p_comp->start_buf, 0));
+            p_comp->start_cmd_issued = 1;
+
+            if(p_comp->comp_type != XAF_DECODER) 
+            {
+                xf_user_msg_t rmsg;
+                /* ...wait until result is delivered */
+                XF_CHK_API(xf_response_get(p_handle, &rmsg)); 
+            
+                /* ...make sure response is expected */
+                XF_CHK_ERR(rmsg.opcode == XF_FILL_THIS_BUFFER && rmsg.buffer == p_comp->start_buf, XAF_API_ERR);
+
+                XF_CHK_API(xaf_comp_post_init_config(p_adev, p_comp, p_comp->start_buf));
+            }            
+        }
+        break;
+    
+    case XAF_EXEC_FLAG:
+        if (!p_comp->init_done || p_comp->exec_cmd_issued)
+            break;
+        p_comp->exec_cmd_issued = 1;
+        if (p_comp->outpool)
+        {
+            u32 i;
+            xf_buffer_t *p_buf;
+            void *p_data;
+
+            for (i=0; i<p_comp->noutbuf; i++)
+            {
+                p_buf = xf_buffer_get(p_comp->outpool);
+                p_data = xf_buffer_data(p_buf);
+
+                XF_CHK_API(xf_command(&p_comp->handle, (p_comp->inp_ports), XF_FILL_THIS_BUFFER, p_data, p_comp->out_format.output_length));
+            }
+            
+            if (!p_comp->inpool) p_comp->pending_resp = p_comp->noutbuf;
+        }
+        break;
+ 
+    case XAF_INPUT_OVER_FLAG:
+        if (!p_comp->input_over)
+        {
+            XF_CHK_API(xf_command(p_handle, 0, XF_EMPTY_THIS_BUFFER, NULL, 0));
+            p_comp->input_over = 1;
+            p_comp->pending_resp++;
+        }
+        break;
+
+    case XAF_INPUT_READY_FLAG:
+        if (!p_comp->input_over)
+        {
+            XAF_CHK_PTR(p_buf);
+            XF_CHK_API(xf_command(p_handle, 0, XF_EMPTY_THIS_BUFFER, p_buf, length));
+            p_comp->pending_resp++;
+        }
+        break;
+
+    case XAF_NEED_OUTPUT_FLAG:
+        if (p_comp->expect_out_cmd)
+        {
+            XAF_CHK_PTR(p_buf);
+            XF_CHK_API(xf_command(p_handle, (p_comp->inp_ports), XF_FILL_THIS_BUFFER, p_buf, length));
+            p_comp->expect_out_cmd--;
+
+            if (!p_comp->inpool && p_comp->outpool) p_comp->pending_resp++;
+        }
+        break;
+    }
+    
+    return XAF_NO_ERROR;
+}
+
+XAF_ERR_CODE xaf_connect(void *src_ptr, void *dest_ptr, s32 num_buf)
+{
+    xaf_comp_t *p_src;
+    xaf_comp_t *p_dest;
+
+    p_src = (xaf_comp_t *)src_ptr;
+    p_dest = (xaf_comp_t *)dest_ptr;
+
+    XAF_CHK_PTR(p_src);
+    XAF_CHK_PTR(p_dest);
+    XAF_CHK_RANGE(num_buf, 2, 4);    
+
+    if (!p_src->init_done || p_src->out_routed == p_src->out_ports || p_dest->inp_routed == p_dest->inp_ports)
+        return XAF_ROUTING_ERROR;
+                   
+    XF_CHK_API(xf_route(&p_src->handle, (p_src->inp_ports + p_src->out_routed), &p_dest->handle, (p_dest->inp_routed), num_buf, p_src->out_format.output_length, 8));
+    
+    p_src->out_routed++;
+    p_dest->inp_routed++;
+
+    return XAF_NO_ERROR;
+}
+
+XAF_ERR_CODE xaf_disconnect(xaf_comp_t *p_comp)
+{
+    XAF_CHK_PTR(p_comp);
+    
+    /* ...tbd - support for multiple output ports */
+    if (!p_comp->init_done || p_comp->out_routed != p_comp->out_ports)
+        return XAF_ROUTING_ERROR;
+
+    XF_CHK_API(xf_unroute(&p_comp->handle, (p_comp->inp_ports)));
+
+    return XAF_NO_ERROR;
+}
+
+
+
+
+
+
diff --git a/hifi/xaf/host-apf/proxy/xf-fio.c b/hifi/xaf/host-apf/proxy/xf-fio.c
new file mode 100644
index 0000000..5c3c3db
--- /dev/null
+++ b/hifi/xaf/host-apf/proxy/xf-fio.c
@@ -0,0 +1,193 @@
+/*******************************************************************************
+* Copyright (C) 2018 Cadence Design Systems, Inc.
+* 
+* Permission is hereby granted, free of charge, to any person obtaining
+* a copy of this software and associated documentation files (the
+* "Software"), to use this Software with Cadence processor cores only and 
+* not with any other processors and platforms, subject to
+* the following conditions:
+* 
+* The above copyright notice and this permission notice shall be included
+* in all copies or substantial portions of the Software.
+* 
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+******************************************************************************/
+
+#define MODULE_TAG                      FIO
+
+/*******************************************************************************
+ * Includes
+ ******************************************************************************/
+
+#include "xf.h"
+#include <sys/ioctl.h>
+#include <sys/mman.h>
+
+/*******************************************************************************
+ * Tracing configuration
+ ******************************************************************************/
+
+TRACE_TAG(INIT, 1);
+TRACE_TAG(CMD, 1);
+TRACE_TAG(RSP, 1);
+
+/*******************************************************************************
+ * Local constants - tbd
+ ******************************************************************************/
+
+/* ...proxy setup ioctl */
+#define XF_PROXY_SETUP_IOCTL            _IO('P', 0x0)
+
+/* ...proxy close ioctl */
+#define XF_PROXY_CLOSE_IOCTL            _IO('P', 0x1)
+
+#define HIFI_DSP_MISC_DRIVER "/dev/hifi_misc"
+#ifndef GJB_COMMENT
+#define HIFI_MISC_IOCTL_XAF_IPC_MSG_SEND _IOW('A',  0x7c, xf_proxy_message_driv_t)
+#define HIFI_MISC_IOCTL_XAF_IPC_MSG_RECV _IOR('A', 0x7d, xf_proxy_message_driv_t)
+#define HIFI_MISC_IOCTL_XAF_IPC_VMSG_PTR _IOR('A', 0x7e, xf_proxy_message_driv_t)
+#endif
+//u8 remote_ipc_pool[XF_CFG_REMOTE_IPC_POOL_SIZE];
+/*******************************************************************************
+ * Internal IPC API implementation
+ ******************************************************************************/
+
+/* ...pass command to remote DSP */
+int xf_ipc_send(xf_proxy_ipc_data_t *ipc, xf_proxy_msg_t *msg, void *b)
+{
+    /* ...unused arg */
+    (void) b;
+
+    int     fd = ipc->fd;
+    int ret;
+#ifdef GJB_COMMENT
+    TRACE(CMD, _b("C[%08x]:(%x,%08x,%u)"), msg->id, msg->opcode, msg->address, msg->length);    
+
+    /* ...pass message to kernel driver */
+    XF_CHK_ERR(write(fd, msg, sizeof(*msg)) == sizeof(*msg), -errno);
+#else
+	ret = ioctl(fd, HIFI_MISC_IOCTL_XAF_IPC_MSG_SEND, msg);// GJB:-Verify th return value with driver implementation.
+#endif
+
+    /* ...communication mutex is still locked! */
+    return 0;
+}
+
+/* ...wait for response availability */
+int xf_ipc_wait(xf_proxy_ipc_data_t *ipc, u32 timeout)
+{
+    int             fd = ipc->fd;
+    fd_set          rfds;
+    struct timeval  tv;
+    
+    /* ...specify waiting set */
+    FD_ZERO(&rfds);
+    FD_SET(fd, &rfds);
+    
+    /* ...set timeout value if given */
+    (timeout ? tv.tv_sec = timeout / 1000, tv.tv_usec = (timeout % 1000) * 1000 : 0);
+    
+    /* ...wait until there is a data in file */
+//    XF_CHK_ERR(select(fd + 1, &rfds, NULL, NULL, (timeout ? &tv : NULL)) >= 0, -errno);
+	select(fd+1,&rfds,NULL,NULL,(timeout? &tv: NULL));
+    
+    /* ...check if descriptor is set */
+    return (FD_ISSET(fd, &rfds) ? 0 : -ETIMEDOUT);
+}
+
+/* ...read response from proxy */
+int xf_ipc_recv(xf_proxy_ipc_data_t *ipc, xf_proxy_msg_t *msg, void **buffer)
+{
+    int     fd = ipc->fd;
+    int     r;
+    xf_proxy_msg_t temp;
+#ifdef GJB_COMMENT
+    /* ...get message header from file */
+    if ((r = read(fd, msg, sizeof(*msg))) == sizeof(*msg))
+    {
+        TRACE(RSP, _b("R[%08x]:(%x,%u,%08x)"), msg->id, msg->opcode, msg->length, msg->address);
+
+        /* ...translate shared address into local pointer */
+        XF_CHK_ERR((*buffer = xf_ipc_a2b(ipc, msg->address)) != (void *)-1, -EBADFD);
+
+        /* ...return positive result indicating the message has been received */
+        return sizeof(*msg);
+    }
+#else
+    if ((r = ioctl(fd, HIFI_MISC_IOCTL_XAF_IPC_MSG_RECV, &temp)) == sizeof(temp))
+    {
+        msg->id = temp.id;
+        msg->opcode = temp.opcode;
+        msg->length = temp.length;
+        *buffer = xf_ipc_a2b(ipc, temp.address);
+        /* ...translate shared address into local pointer */
+        XF_CHK_ERR((*buffer = xf_ipc_a2b(ipc, temp.address)) != (void *)-1, -EBADFD);
+        msg->address = temp.address;
+        return sizeof(*msg);
+    }
+#endif
+    else
+    {
+        /* ...if no response is available, return 0 result */
+        return XF_CHK_API(errno == EAGAIN ? 0 : -errno);
+    }
+}
+
+/*******************************************************************************
+ * Internal API functions implementation
+ ******************************************************************************/
+
+/* ...open proxy interface on proper DSP partition */
+int xf_ipc_open(xf_proxy_ipc_data_t *ipc, u32 core, void *p_shmem)
+{
+    //XF_CHK_ERR((p_shmem != NULL), -errno);
+    //size_t xf_cfg_remote_ipc_pool_size = *(size_t *)p_shmem;//user configured shmem pool size: minimum 256 KB
+    /* ...unused arg */
+    (void) p_shmem;
+#ifdef GJB_COMMENT	
+    /* ...open file handle */
+    XF_CHK_ERR((ipc->fd = open("/dev/xtensa-proxy", O_RDWR)) >= 0, -errno);
+
+    /* ...pass shread memory core for this proxy instance */
+    XF_CHK_ERR(ioctl(ipc->fd, XF_PROXY_SETUP_IOCTL, core) >= 0, -errno);    
+#else
+	XF_CHK_ERR((ipc->fd = open(HIFI_DSP_MISC_DRIVER, O_RDWR,0)) >= 0, -errno);
+#endif
+    /* ...create pipe for asynchronous response delivery */
+    XF_CHK_ERR(pipe(ipc->pipe) == 0, -errno);
+
+    /* ...map entire shared memory region (not too good - tbd) */
+//	ipc->shmem = remote_ipc_pool;
+//	ioctl(ipc->fd, HIFI_MISC_IOCTL_XAF_IPC_VMSG_PTR, ipc->shmem);
+#if 1
+    //allocate 256 KB constant size
+    XF_CHK_ERR((ipc->shmem = mmap(NULL, XF_CFG_REMOTE_IPC_POOL_SIZE, PROT_READ | PROT_WRITE, MAP_SHARED, ipc->fd, 0)) != MAP_FAILED, -errno);
+#else
+    XF_CHK_ERR((ipc->shmem = mmap(NULL, xf_cfg_remote_ipc_pool_size, PROT_READ | PROT_WRITE, MAP_SHARED, ipc->fd, 0)) != MAP_FAILED, -errno);
+#endif
+    TRACE(INIT, _b("proxy-%u interface opened"), core); 
+    return 0;
+}
+
+/* ...close proxy handle */
+void xf_ipc_close(xf_proxy_ipc_data_t *ipc, u32 core)
+{
+    /* ...unmap shared memory region */
+//    (void)munmap(ipc->shmem, XF_CFG_REMOTE_IPC_POOL_SIZE);
+
+    /* ...close asynchronous response delivery pipe */
+    close(ipc->pipe[0]), close(ipc->pipe[1]);
+    
+    /* ...close proxy file handle */
+    close(ipc->fd);
+
+    TRACE(INIT, _b("proxy-%u interface closed"), core);
+}
+
diff --git a/hifi/xaf/host-apf/proxy/xf-proxy.c b/hifi/xaf/host-apf/proxy/xf-proxy.c
new file mode 100644
index 0000000..0af4517
--- /dev/null
+++ b/hifi/xaf/host-apf/proxy/xf-proxy.c
@@ -0,0 +1,686 @@
+/*******************************************************************************
+* Copyright (C) 2018 Cadence Design Systems, Inc.
+* 
+* Permission is hereby granted, free of charge, to any person obtaining
+* a copy of this software and associated documentation files (the
+* "Software"), to use this Software with Cadence processor cores only and 
+* not with any other processors and platforms, subject to
+* the following conditions:
+* 
+* The above copyright notice and this permission notice shall be included
+* in all copies or substantial portions of the Software.
+* 
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+******************************************************************************/
+
+#define MODULE_TAG                      PROXY
+
+/*******************************************************************************
+ * Includes
+ ******************************************************************************/
+
+#include "xf.h"
+
+/*******************************************************************************
+ * Tracing configuration
+ ******************************************************************************/
+
+TRACE_TAG(INIT, 1);
+TRACE_TAG(CMD, 1);
+TRACE_TAG(EXEC, 1);
+TRACE_TAG(RSP, 1);
+TRACE_TAG(REG, 1);
+TRACE_TAG(MEM, 1);
+TRACE_TAG(GRAPH, 1);
+TRACE_TAG(BUFFER, 1);
+
+/*******************************************************************************
+ * Internal functions definitions
+ ******************************************************************************/
+
+/* ...execute proxy command synchronously */
+static inline int xf_proxy_cmd_exec(xf_proxy_t *proxy, xf_user_msg_t *msg)
+{
+    xf_proxy_msg_t  m;
+    
+    /* ...send command to remote proxy */
+    m.id = msg->id, m.opcode = msg->opcode, m.length = msg->length;
+
+    /* ...translate address */
+    XF_CHK_ERR((m.address = xf_proxy_b2a(proxy, msg->buffer)) != XF_PROXY_BADADDR, -EINVAL);
+
+    /* ...pass command to remote proxy */
+    XF_CHK_API(xf_ipc_send(&proxy->ipc, &m, msg->buffer));
+
+    /* ...wait for response reception indication from proxy thread */
+    XF_CHK_API(xf_proxy_response_get(proxy, &m));
+    
+    /* ...copy parameters */
+    msg->id = m.id, msg->opcode = m.opcode, msg->length = m.length;
+
+    /* ...translate address back to virtual space */
+    XF_CHK_ERR((msg->buffer = xf_proxy_a2b(proxy, m.address)) != (void *)-1, -EBADFD);
+    
+    TRACE(EXEC, _b("proxy[%p]: command done: [%08x:%p:%u]"), proxy, msg->opcode, msg->buffer, msg->length);
+
+    return 0;
+}
+
+#if 0
+/* ...pass command to remote DSP */
+static inline int xf_proxy_cmd(xf_proxy_t *proxy, xf_handle_t *handle, xf_user_msg_t *m)
+{
+    xf_proxy_msg_t  msg;
+
+    /* ...set session-id of the message */
+    msg.id = __XF_MSG_ID(__XF_AP_CLIENT(proxy->core, handle->client), m->id);
+    msg.opcode = m->opcode;
+    msg.length = m->length;
+
+    /* ...translate buffer pointer to shared address */
+    XF_CHK_ERR((msg.address = xf_proxy_b2a(proxy, m->buffer)) != XF_PROXY_BADADDR, -EINVAL);
+
+    /* ...submit command message to IPC layer */
+    return XF_CHK_API(xf_ipc_send(&proxy->ipc, &msg, m->buffer));
+}
+#endif /* 0 */
+
+/* ...allocate local client-id number */
+static inline u32 xf_client_alloc(xf_proxy_t *proxy, xf_handle_t *handle)
+{
+    u32     client;
+    
+    if ((client = proxy->cmap[0].next) != 0)
+    {
+        /* ...pop client from free clients list */
+        proxy->cmap[0].next = proxy->cmap[client].next;
+
+        /* ...put client handle into association map */
+        handle->client = client, proxy->cmap[client].handle = handle;
+    }
+
+    return client;
+}
+
+/* ...recycle local client-id number */
+static inline void xf_client_free(xf_proxy_t *proxy, xf_handle_t *handle)
+{
+    u32     client = handle->client;
+    
+    /* ...push client into head of the free clients list */
+    proxy->cmap[client].next = proxy->cmap[0].next;
+    
+    /* ...adjust head of free clients */
+    proxy->cmap[0].next = client;
+}
+
+/* ...lookup client basing on its local id */
+static inline xf_handle_t * xf_client_lookup(xf_proxy_t *proxy, u32 client)
+{
+    /* ...client index must be in proper range */
+    BUG(client >= XF_CFG_PROXY_MAX_CLIENTS, _x("Invalid client index: %u"), client);
+    
+    /* ...check if client index is small */
+    if (proxy->cmap[client].next < XF_CFG_PROXY_MAX_CLIENTS)
+        return NULL;
+    else
+        return proxy->cmap[client].handle;
+}
+
+/* ...create new client on remote core */
+static inline int xf_client_register(xf_proxy_t *proxy, xf_handle_t *handle, xf_id_t id, u32 core)
+{
+    void           *b = xf_handle_aux(handle);
+    xf_user_msg_t   msg;
+    
+    /* ...set session-id: source is local proxy, destination is remote proxy */
+    msg.id = __XF_MSG_ID(__XF_AP_PROXY(proxy->core), __XF_DSP_PROXY(core));
+    msg.opcode = XF_REGISTER;
+    msg.buffer = b;
+    msg.length = strlen(id) + 1;
+
+    /* ...copy component identifier */
+    strncpy(b, id, xf_buffer_length(handle->aux));
+
+    /* ...execute command synchronously */
+    XF_CHK_API(xf_proxy_cmd_exec(proxy, &msg));
+    
+    /* ...check operation is successfull */
+    XF_CHK_ERR(msg.opcode == (u32) XF_REGISTER, -EFAULT);
+    
+    /* ...save received component global client-id */
+    handle->id = XF_MSG_SRC(msg.id);  
+
+    TRACE(REG, _b("[%p]=[%s:%u:%u]"), handle, id, XF_PORT_CORE(handle->id), XF_PORT_CLIENT(handle->id));
+
+    return 0;
+}
+
+/* ...unregister client from remote proxy */
+static inline int xf_client_unregister(xf_proxy_t *proxy, xf_handle_t *handle)
+{
+    xf_user_msg_t   msg;
+
+    /* ...make sure the client is consistent */
+    BUG(proxy->cmap[handle->client].handle != handle, _x("Invalid handle: %p"), handle);
+    
+    /* ...set message parameters */
+    msg.id = __XF_MSG_ID(__XF_AP_PROXY(proxy->core), handle->id);
+    msg.opcode = XF_UNREGISTER;
+    msg.buffer = NULL;
+    msg.length = 0;
+
+    /* ...synchronously execute command on remote proxy */
+    XF_CHK_API(xf_proxy_cmd_exec(proxy, &msg));
+    
+    /* ...opcode must be XF_UNREGISTER - tbd */
+    BUG(msg.opcode != XF_UNREGISTER, _x("Invalid opcode: %X"), msg.opcode);
+    
+    TRACE(REG, _b("%p[%u:%u] unregistered"), handle, XF_PORT_CORE(handle->id), XF_PORT_CLIENT(handle->id));
+
+    return 0;
+}
+
+/* ...allocate shared buffer */
+static inline int xf_proxy_buffer_alloc(xf_proxy_t *proxy, u32 length, void **buffer)
+{
+    u32             core = proxy->core;
+    xf_user_msg_t   msg;
+    
+    /* ...prepare command parameters */
+    msg.id = __XF_MSG_ID(__XF_AP_PROXY(core), __XF_DSP_PROXY(core));
+    msg.opcode = XF_ALLOC;
+    msg.length = length;
+    msg.buffer = NULL;
+
+    /* ...synchronously execute command on remote proxy */
+    XF_CHK_API(xf_proxy_cmd_exec(proxy, &msg));
+
+    /* ...check if response is valid */
+    XF_CHK_ERR(msg.opcode == XF_ALLOC, -EBADFD);
+
+    /* ...check if allocation is successful */
+    XF_CHK_ERR(msg.buffer != NULL, -ENOMEM);
+
+    /* ...save output parameter */
+    *buffer = msg.buffer;
+    
+    TRACE(MEM, _b("proxy-%u: allocated [%p:%u]"), core, *buffer, length);
+
+    return 0;
+}
+
+/* ...free shared AP-DSP memory */
+static inline int xf_proxy_buffer_free(xf_proxy_t *proxy, void *buffer, u32 length)
+{
+    u32             core = proxy->core;
+    xf_user_msg_t   msg;
+
+    /* ...prepare command parameters */
+    msg.id = __XF_MSG_ID(__XF_AP_PROXY(core), __XF_DSP_PROXY(core));
+    msg.opcode = XF_FREE;
+    msg.length = length;
+    msg.buffer = buffer;
+    
+    /* ...synchronously execute command on remote proxy */
+    XF_CHK_API(xf_proxy_cmd_exec(proxy, &msg));
+
+    /* ...check if response is valid */
+    XF_CHK_ERR(msg.opcode == XF_FREE, -EBADFD);
+
+    TRACE(MEM, _b("proxy-%u: free [%p:%u]"), core, buffer, length);
+
+    return 0;
+}
+
+/*******************************************************************************
+ * Proxy interface asynchronous receiving thread
+ ******************************************************************************/
+
+static void * xf_proxy_thread(void *arg)
+{
+    xf_proxy_t     *proxy = arg;
+    xf_handle_t    *client;
+    int             r;
+    
+    /* ...start polling thread */
+    while (1)
+    {
+        xf_proxy_msg_t  m;
+        xf_user_msg_t   msg;
+        
+        /* ...wait for response from remote proxy (infinite timeout) */
+        if ((r = xf_ipc_wait(&proxy->ipc, 0)) < 0)
+            break;
+
+        /* ...retrieve all responses received */
+        while ((r = xf_ipc_recv(&proxy->ipc, &m, &msg.buffer)) == sizeof(m))
+        {
+            /* ...make sure we have proper core identifier of SHMEM interface */
+            BUG(XF_MSG_DST_CORE(m.id) != proxy->core, _x("Invalid session-id: %X (core=%u)"), m.id, proxy->core);
+
+            /* ...make sure translation is successful */
+            BUG(msg.buffer == (void *)-1, _x("Invalid buffer address: %08x"), m.address);        
+
+            /* ...retrieve information fields */
+            msg.id = XF_MSG_SRC(m.id), msg.opcode = m.opcode, msg.length = m.length;           
+        
+            TRACE(RSP, _b("R[%08x]:(%08x,%u,%08x)"), m.id, m.opcode, m.length, m.address);
+
+            /* ...lookup component basing on destination port specification */
+            if (XF_AP_CLIENT(m.id) == 0)
+            {
+                /* ...put proxy response to local IPC queue */
+                xf_proxy_response_put(proxy, &m);
+            }
+            else if ((client = xf_client_lookup(proxy, XF_AP_CLIENT(m.id))) != NULL)
+            {
+                /* ...client is found; invoke its response callback (must be non-blocking) */
+                client->response(client, &msg);
+            }
+            else
+            {
+                /* ...client has been disconnected already; drop message */
+                TRACE(RSP, _b("Client look-up failed - drop message"));
+            }
+        }
+
+        /* ...if result code is negative; terminate thread operation */
+        if (r < 0)
+        {
+            TRACE(ERROR, _x("abnormal proxy[%p] thread termination: %d"), proxy, r);
+            break;
+        }
+    }
+    
+    TRACE(INIT, _b("IPC proxy[%p] thread terminated: %d"), proxy, r);
+    
+    return (void *)(intptr_t)r;
+}
+
+/*******************************************************************************
+ * HiFi proxy API
+ ******************************************************************************/
+
+/* ...open HiFi proxy */
+int xf_proxy_init(xf_proxy_t *proxy, u32 core, void *p_shmem)
+{
+    u32             i;
+    int             r;
+    
+    /* ...initialize proxy lock */
+    __xf_lock_init(&proxy->lock);
+   
+    /* ...open proxy IPC interface */
+    XF_CHK_API(xf_ipc_open(&proxy->ipc, core, p_shmem));
+
+    /* ...save proxy core - hmm, too much core identifiers - tbd */
+    proxy->core = core;
+    
+    /* ...line-up all clients into single-linked list */
+    for (i = 0; i < XF_CFG_PROXY_MAX_CLIENTS - 1; i++)
+    {
+        proxy->cmap[i].next = i + 1;
+    }
+    
+    /* ...tail of the list points back to head (list terminator) */
+    proxy->cmap[i].next = 0;
+
+    /* ...initialize thread attributes (joinable, with minimal stack) */
+    if ((r = __xf_thread_create(&proxy->thread, xf_proxy_thread, proxy)) < 0)
+    {
+        TRACE(ERROR, _x("Failed to create polling thread: %d"), r);
+        xf_ipc_close(&proxy->ipc, core);
+        return r;
+    }
+        
+    TRACE(INIT, _b("proxy-%u[%p] opened"), core, proxy);
+    
+    return 0;
+}
+
+/* ...close proxy handle */
+void xf_proxy_close(xf_proxy_t *proxy)
+{
+    u32     core = proxy->core;
+    
+    /* ...terminate proxy thread */
+    __xf_thread_destroy(&proxy->thread);
+
+    /* ...close proxy IPC interface */
+    xf_ipc_close(&proxy->ipc, core);
+    
+    TRACE(INIT, _b("proxy-%u[%p] closed"), core, proxy);
+}
+
+/*******************************************************************************
+ * HiFi component API
+ ******************************************************************************/
+
+/* ...open component handle */
+int xf_open(xf_proxy_t *proxy, xf_handle_t *handle, xf_id_t id, u32 core, xf_response_cb response)
+{
+    int     r;
+    
+    /* ...retrieve auxiliary control buffer from proxy - need I */
+    XF_CHK_ERR(handle->aux = xf_buffer_get(proxy->aux), -EBUSY);
+
+    /* ...initialize IPC data */
+    XF_CHK_API(xf_ipc_data_init(&handle->ipc));    
+
+    /* ...register client in interlocked fashion */
+    xf_proxy_lock(proxy);
+
+    /* ...allocate local client */
+    if (xf_client_alloc(proxy, handle) == 0)
+    {
+        TRACE(ERROR, _x("client allocation failed"));
+        r = -EBUSY;
+    }
+    else if ((r = xf_client_register(proxy, handle, id, core)) < 0)
+    {
+        TRACE(ERROR, _x("client registering failed"));
+        xf_client_free(proxy, handle);
+    }
+    
+    xf_proxy_unlock(proxy);
+
+    /* ...if failed, release buffer handle */
+    if (r < 0)
+    {
+        /* ...operation failed; return buffer back to proxy pool */
+        xf_buffer_put(handle->aux), handle->aux = NULL;
+    }
+    else
+    {
+        /* ...operation completed successfully; assign handle data */
+        handle->response = response;
+        handle->proxy = proxy;
+
+        TRACE(INIT, _b("component[%p]:(id=%s,core=%u) created"), handle, id, core);
+    }
+    
+    return XF_CHK_API(r);
+}
+
+/* ...close component handle */
+void xf_close(xf_handle_t *handle)
+{
+    xf_proxy_t *proxy = handle->proxy;
+
+    /* ...do I need to take component lock here? guess no - tbd */
+
+    /* ...buffers and stuff? - tbd */
+
+    /* ...acquire global proxy lock */
+    xf_proxy_lock(proxy);
+    
+    /* ...unregister component from remote DSP proxy (ignore result code) */
+    (void) xf_client_unregister(proxy, handle);
+    
+    /* ...recycle client-id afterwards */
+    xf_client_free(proxy, handle);
+
+    /* ...release global proxy lock */
+    xf_proxy_unlock(proxy);
+
+    /* ...destroy IPC data */
+    xf_ipc_data_destroy(&handle->ipc);
+    
+    /* ...clear handle data */
+    xf_buffer_put(handle->aux), handle->aux = NULL;
+    
+    /* ...wipe out proxy pointer */
+    handle->proxy = NULL;
+
+    TRACE(INIT, _b("component[%p] destroyed"), handle);
+}
+
+/* ...port binding function */
+int xf_route(xf_handle_t *src, u32 src_port, xf_handle_t *dst, u32 dst_port, u32 num, u32 size, u32 align)
+{
+    xf_proxy_t             *proxy = src->proxy;
+    xf_buffer_t            *b;
+    xf_route_port_msg_t    *m;
+    xf_user_msg_t           msg;
+    
+    /* ...validity checks - proxy pointers are same */
+    XF_CHK_ERR(proxy == dst->proxy, -EINVAL);
+    
+    /* ...buffer data is valid */
+    XF_CHK_ERR(num && size && xf_is_power_of_two(align), -EINVAL);
+    
+    /* ...get control buffer */
+    XF_CHK_ERR(b = xf_buffer_get(proxy->aux), -EBUSY);
+
+    /* ...get message buffer */
+    m = xf_buffer_data(b);
+    
+    /* ...fill-in message parameters */
+    //m->src = __XF_PORT_SPEC2(src->id, src_port);
+    m->dst = __XF_PORT_SPEC2(dst->id, dst_port);
+    m->alloc_number = num;
+    m->alloc_size = size;
+    m->alloc_align = align;
+
+    /* ...set command parameters */
+    msg.id = __XF_MSG_ID(__XF_AP_PROXY(proxy->core), __XF_PORT_SPEC2(src->id, src_port));
+    msg.opcode = XF_ROUTE;
+    msg.length = sizeof(*m);
+    msg.buffer = m;
+
+    /* ...synchronously execute command on remote DSP */    
+    XF_CHK_API(xf_proxy_cmd_exec(proxy, &msg));
+
+    /* ...return buffer to proxy */
+    xf_buffer_put(b);
+
+    /* ...check result is successfull */
+    XF_CHK_ERR(msg.opcode == (u32) XF_ROUTE, -ENOMEM);
+    
+    /* ...port binding completed */
+    TRACE(GRAPH, _b("[%p]:%u bound to [%p]:%u"), src, src_port, dst, dst_port);
+    
+    return 0;
+}
+
+/* ...port unbinding function */
+int xf_unroute(xf_handle_t *src, u32 src_port)
+{
+    xf_proxy_t             *proxy = src->proxy;
+    xf_buffer_t            *b;
+    xf_unroute_port_msg_t  *m;
+    xf_user_msg_t           msg;
+    int                     r;
+    
+    /* ...get control buffer */
+    XF_CHK_ERR(b = xf_buffer_get(proxy->aux), -EBUSY);
+
+    /* ...get message buffer */
+    m = xf_buffer_data(b);
+    
+    /* ...fill-in message parameters */
+    //m->src = __XF_PORT_SPEC2(src->id, src_port);
+
+    /* ...set command parameters */
+    msg.id = __XF_MSG_ID(__XF_AP_PROXY(proxy->core), __XF_PORT_SPEC2(src->id, src_port));
+    msg.opcode = XF_UNROUTE;
+    msg.length = sizeof(*m);
+    msg.buffer = m;
+
+    /* ...synchronously execute command on remote DSP */    
+    if ((r = xf_proxy_cmd_exec(proxy, &msg)) != 0)
+    {
+        TRACE(ERROR, _x("Command failed: %d"), r);
+        goto out;
+    }
+    else if (msg.opcode != (u32) XF_UNROUTE)
+    {
+        TRACE(ERROR, _x("Port unbinding failed"));
+        r = -EBADFD;
+        goto out;
+    }
+    
+    /* ...port binding completed */
+    TRACE(GRAPH, _b("[%p]:%u unbound"), src, src_port);
+    
+out:
+    /* ...return buffer to proxy */
+    xf_buffer_put(b);
+    
+    return r;
+}
+
+/* ...send a command message to component */
+int xf_command(xf_handle_t *handle, u32 port, u32 opcode, void *buffer, u32 length)
+{
+    xf_proxy_t     *proxy = handle->proxy;
+    xf_proxy_msg_t  msg;
+    
+    /* ...fill-in message parameters */
+    msg.id = __XF_MSG_ID(__XF_AP_CLIENT(proxy->core, handle->client), __XF_PORT_SPEC2(handle->id, port));
+    msg.opcode = opcode;
+    msg.length = length;
+    XF_CHK_ERR((msg.address = xf_proxy_b2a(proxy, buffer)) != XF_PROXY_BADADDR, -EINVAL);
+
+    TRACE(CMD, _b("[%p]:[%08x]:(%08x,%u,%p)"), handle, msg.id, opcode, length, buffer);
+
+    /* ...pass command to IPC layer */
+    return XF_CHK_API(xf_ipc_send(&proxy->ipc, &msg, buffer));
+}
+
+/*******************************************************************************
+ * Buffer pool API
+ ******************************************************************************/
+
+/* ...allocate buffer pool */
+int xf_pool_alloc(xf_proxy_t *proxy, u32 number, u32 length, xf_pool_type_t type, xf_pool_t **pool, s32 id, 
+                  xaf_mem_malloc_fxn_t xaf_malloc, xaf_mem_free_fxn_t xaf_free)
+{
+    xf_pool_t      *p;
+    xf_buffer_t    *b;
+    void           *data;
+    int             r;
+ 
+    /* ...unused arg */
+    (void) type;
+
+    /* ...basic validity checks; number of buffers is positive */
+    XF_CHK_ERR(number > 0, -EINVAL);
+
+    /* ...get properly aligned buffer length */
+    length = (length + XF_PROXY_ALIGNMENT - 1) & ~(XF_PROXY_ALIGNMENT - 1);
+
+    /* ...allocate data structure */
+    p = xaf_malloc(offset_of(xf_pool_t, buffer) + number * sizeof(xf_buffer_t), id);
+    XF_CHK_ERR(p, -ENOMEM);
+
+    /* ...issue memory pool allocation request to remote DSP */
+    xf_proxy_lock(proxy);
+    r = xf_proxy_buffer_alloc(proxy, number * length, &p->p);
+    xf_proxy_unlock(proxy);
+    
+    /* ...if operation is failed, do cleanup */
+    if (r < 0)
+    {
+        TRACE(ERROR, _x("failed to allocate buffer: %d"), r);
+        xaf_free(p, id);
+        return r;
+    }
+    else
+    {
+        /* ...set pool parameters */
+        p->number = number, p->length = length;
+        p->proxy = proxy;
+    }
+ 
+    /* ...create individual buffers and link them into free list */
+    for (p->free = b = &p->buffer[0], data = p->p; number > 0; number--, b++)
+    {
+        /* ...set address of the buffer (no length there) */
+        b->address = data;
+            
+        /* ...file buffer into the free list */
+        b->link.next = b + 1;
+
+        /* ...advance data pointer in contiguous buffer */
+        data = (unsigned char *) data + length;
+    }
+
+    /* ...terminate list of buffers (not too good - tbd) */
+    b[-1].link.next = NULL;
+
+    TRACE(BUFFER, _b("[%p]: pool[%p] created: %u * %u"), proxy, p, p->number, p->length);
+    
+    /* ...return buffer pointer */
+    *pool = p;
+    
+    return 0;
+}
+
+/* ...buffer pool destruction */
+void xf_pool_free(xf_pool_t *pool, s32 id, xaf_mem_free_fxn_t xaf_free)
+{
+    xf_proxy_t     *proxy = pool->proxy;
+
+    /* ...check buffers are all freed - tbd */
+
+    /* ...use global proxy lock for pool operations protection */
+    xf_proxy_lock(proxy);
+    
+    /* ...release allocated buffer on remote DSP */
+    xf_proxy_buffer_free(proxy, pool->p, pool->length * pool->number);
+
+    /* ...release global proxy lock */
+    xf_proxy_unlock(proxy);
+    
+    /* ...deallocate pool structure itself */
+    xaf_free(pool, id);
+
+    TRACE(BUFFER, _b("[%p]::pool[%p] destroyed"), proxy, pool);
+}
+
+/* ...get new buffer from a pool */
+xf_buffer_t * xf_buffer_get(xf_pool_t *pool)
+{
+    xf_buffer_t    *b;
+
+    /* ...use global proxy lock for pool operations protection */
+    xf_proxy_lock(pool->proxy);
+    
+    /* ...take buffer from a head of the free list */
+    if ((b = pool->free) != NULL)
+    {
+        /* ...advance free list head */
+        pool->free = b->link.next, b->link.pool = pool;
+
+        TRACE(BUFFER, _b("pool[%p]::get[%p]"), pool, b);
+    }
+
+    xf_proxy_unlock(pool->proxy);
+    
+    return b;
+}
+
+/* ...return buffer back to pool */
+void xf_buffer_put(xf_buffer_t *buffer)
+{
+    xf_pool_t  *pool = buffer->link.pool;
+    
+    /* ...use global proxy lock for pool operations protection */
+    xf_proxy_lock(pool->proxy);
+    
+    /* ...put buffer back to a pool */
+    buffer->link.next = pool->free, pool->free = buffer;
+    
+    TRACE(BUFFER, _b("pool[%p]::put[%p]"), pool, buffer);
+
+    xf_proxy_unlock(pool->proxy);
+}
diff --git a/hifi/xaf/host-apf/proxy/xf-trace.c b/hifi/xaf/host-apf/proxy/xf-trace.c
new file mode 100644
index 0000000..fb90267
--- /dev/null
+++ b/hifi/xaf/host-apf/proxy/xf-trace.c
@@ -0,0 +1,90 @@
+/*******************************************************************************
+* Copyright (C) 2018 Cadence Design Systems, Inc.
+* 
+* Permission is hereby granted, free of charge, to any person obtaining
+* a copy of this software and associated documentation files (the
+* "Software"), to use this Software with Cadence processor cores only and 
+* not with any other processors and platforms, subject to
+* the following conditions:
+* 
+* The above copyright notice and this permission notice shall be included
+* in all copies or substantial portions of the Software.
+* 
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+******************************************************************************/
+
+#include "xf.h"
+#include <sys/time.h>
+
+#if XF_TRACE
+/*******************************************************************************
+ * Local data definitions
+ ******************************************************************************/
+
+/* ...tracing lock */
+static pthread_mutex_t  xf_trace_mutex;
+
+/*******************************************************************************
+ * Tracing facility
+ ******************************************************************************/
+
+/* ...timestamp function */
+static u32 xf_timenow(void)
+{
+    struct timeval          tv;
+
+    /* ...get current time value */
+    gettimeofday(&tv, NULL);
+
+    /* ...wrap over every 100 seconds */
+    return (u32)((tv.tv_sec % 100) * 1000000 + tv.tv_usec);
+}
+
+/* ...tracing initialization */
+void xf_trace_init(const char *banner)
+{
+    /* ...initialize tracing lock */
+    pthread_mutex_init(&xf_trace_mutex, NULL);
+
+    /* ...output banner */
+    xf_trace(banner);
+}
+
+/* ...tracing primitive */
+int xf_trace(const char *format, ...)
+{
+    va_list     args;
+    static char buf[256];
+    char       *b = buf;
+    
+    /* ...get global tracing lock */
+    pthread_mutex_lock(&xf_trace_mutex);
+
+    /* ...output timestamp */
+    b += sprintf(b, "[%08u] ", xf_timenow());
+
+    /* ...output format string */
+    va_start(args, format);
+    b += vsprintf(b, format, args);
+    va_end(args);
+
+    /* ...put terminator */
+    *b = '\0';
+
+    /* ...output prepared string */
+    __xf_puts(buf);
+    
+    /* ...release tracing lock */
+    pthread_mutex_unlock(&xf_trace_mutex);
+
+    return 0;
+}
+
+#endif  /* XF_TRACE */
diff --git a/hifi/xaf/host-apf/tools/dhifimesg b/hifi/xaf/host-apf/tools/dhifimesg
new file mode 100755
index 0000000..8829488
--- /dev/null
+++ b/hifi/xaf/host-apf/tools/dhifimesg
Binary files differ
diff --git a/hifi/xaf/host-apf/utest/include/xaf-mem.h b/hifi/xaf/host-apf/utest/include/xaf-mem.h
new file mode 100644
index 0000000..6883803
--- /dev/null
+++ b/hifi/xaf/host-apf/utest/include/xaf-mem.h
@@ -0,0 +1,49 @@
+/*******************************************************************************
+* Copyright (C) 2018 Cadence Design Systems, Inc.
+* 
+* Permission is hereby granted, free of charge, to any person obtaining
+* a copy of this software and associated documentation files (the
+* "Software"), to use this Software with Cadence processor cores only and 
+* not with any other processors and platforms, subject to
+* the following conditions:
+* 
+* The above copyright notice and this permission notice shall be included
+* in all copies or substantial portions of the Software.
+* 
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+******************************************************************************/
+
+#define MEM_NUM_MEM_ALLOC 32
+
+typedef struct {
+    void* heap_ptr;
+    int size;
+}mem_obj_dev_t;
+
+typedef struct {
+    void* heap_ptr;
+    int size;
+}mem_obj_comp_t;
+
+typedef struct {
+    mem_obj_dev_t mem_dev[MEM_NUM_MEM_ALLOC];
+    mem_obj_comp_t mem_comp[MEM_NUM_MEM_ALLOC];
+    int num_malloc_dev;
+    int num_malloc_comp;
+    int persi_mem_dev;
+    int persi_mem_comp;
+}mem_obj_t;
+
+void* mem_malloc(int size, int id);
+void mem_free(void * heap_ptr, int id);
+void* mem_init();
+void mem_exit();
+int mem_get_alloc_size(mem_obj_t* mem_handle, int id);
+
diff --git a/hifi/xaf/host-apf/utest/include/xaf-utils-test.h b/hifi/xaf/host-apf/utest/include/xaf-utils-test.h
new file mode 100644
index 0000000..e6c2ce0
--- /dev/null
+++ b/hifi/xaf/host-apf/utest/include/xaf-utils-test.h
@@ -0,0 +1,37 @@
+/*******************************************************************************
+* Copyright (C) 2018 Cadence Design Systems, Inc.
+* 
+* Permission is hereby granted, free of charge, to any person obtaining
+* a copy of this software and associated documentation files (the
+* "Software"), to use this Software with Cadence processor cores only and 
+* not with any other processors and platforms, subject to
+* the following conditions:
+* 
+* The above copyright notice and this permission notice shall be included
+* in all copies or substantial portions of the Software.
+* 
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+******************************************************************************/
+
+#include <stdio.h>
+
+#include "xf.h"
+#include "xaf-api.h"
+#include "xa_type_def.h"
+
+#include "xaf-mem.h"
+
+/* exported global variables */
+extern int audio_frmwk_buf_size;
+extern int audio_comp_buf_size;
+
+int print_mem_mcps_info(mem_obj_t* mem_handle, int num_comp);
+int print_banner(char *app_name);
+
diff --git a/hifi/xaf/host-apf/utest/xaf-dec-mix-test.c b/hifi/xaf/host-apf/utest/xaf-dec-mix-test.c
new file mode 100644
index 0000000..28ac876
--- /dev/null
+++ b/hifi/xaf/host-apf/utest/xaf-dec-mix-test.c
@@ -0,0 +1,421 @@
+/*******************************************************************************
+* Copyright (C) 2018 Cadence Design Systems, Inc.
+* 
+* Permission is hereby granted, free of charge, to any person obtaining
+* a copy of this software and associated documentation files (the
+* "Software"), to use this Software with Cadence processor cores only and 
+* not with any other processors and platforms, subject to
+* the following conditions:
+* 
+* The above copyright notice and this permission notice shall be included
+* in all copies or substantial portions of the Software.
+* 
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+******************************************************************************/
+
+#define MODULE_TAG                      UTEST
+
+#include "xaf-utils-test.h"
+
+#include "audio/xa_vorbis_dec_api.h"
+#include "audio/xa-mixer-api.h"
+#include "audio/xa-audio-decoder-api.h"
+
+#include "xa_playback.h"
+
+#define PRINT_USAGE do { fprintf(stderr, "\nUsage: %s <input-file1> <input-file2>\n", argv[0]); \
+                         fprintf(stderr, "       Only .ogg and .pcm files are supported. \n"); \
+                         fprintf(stderr, "       Playback is configured @ 48kHz, 2 ch, 16 bits pcm. \n"); \
+                         fprintf(stderr, "       <input-file2> is optional. \n"); \
+                         fprintf(stderr, "       pcm output is written to dec-mix-out.pcm, by default. \n\n"); \
+                       } while(0)
+
+#define MAX_INP_STRMS       2
+#define NUM_COMP_IN_GRAPH   3
+
+/* ...global variables */
+int g_pthread_exit_code=0x12345678;
+
+/* ...playback format */    
+xaf_format_t pb_format;
+
+/* ...playback device parameters */
+void *pb_handle = NULL;
+
+void thread_exit_handler(int sig)
+{
+    /* ...unused arg */
+    (void) sig;
+
+    pthread_exit(0);
+}
+
+static int vorbis_setup(void *p_decoder)
+{
+    int param[2];
+    
+    /* 1: Raw decode, 0: Ogg decode */
+    param[0] = XA_VORBISDEC_CONFIG_PARAM_RAW_VORBIS_FILE_MODE;
+    param[1] = 0;
+
+    XF_CHK_API(xaf_comp_set_config(p_decoder, 1, &param[0]));    
+    
+    return 0;
+}
+
+static int pcm_setup(void *p_pcm)
+{
+    int param[6];
+
+    param[0] = XA_CODEC_CONFIG_PARAM_SAMPLE_RATE;
+    param[1] = pb_format.sample_rate;
+    param[2] = XA_CODEC_CONFIG_PARAM_CHANNELS;
+    param[3] = pb_format.channels;
+    param[4] = XA_CODEC_CONFIG_PARAM_PCM_WIDTH;
+    param[5] = pb_format.pcm_width;
+
+    XF_CHK_API(xaf_comp_set_config(p_pcm, 3, &param[0]));    
+
+    return 0;
+}
+
+static int mixer_setup(void *p_decoder, xaf_format_t *p_format)
+{
+    int param[6];
+
+    param[0] = XA_MIXER_CONFIG_PARAM_SAMPLE_RATE;
+    param[1] = p_format->sample_rate;
+    param[2] = XA_MIXER_CONFIG_PARAM_CHANNELS;
+    param[3] = p_format->channels;
+    param[4] = XA_MIXER_CONFIG_PARAM_PCM_WIDTH;
+    param[5] = p_format->pcm_width;
+
+    XF_CHK_API(xaf_comp_set_config(p_decoder, 3, &param[0]));    
+
+    return 0;
+}
+
+static int consume_output(void *p_buf, int buf_length, void *p_output)
+{
+    XAF_CHK_PTR(p_buf);
+    XAF_CHK_PTR(p_output);
+
+#if !defined BOARD
+    FILE *fp = p_output;
+    fwrite(p_buf, 1, buf_length, fp);    
+
+    if (xa_playback_buf(pb_handle, p_buf, buf_length)) {
+        TRACE(ERROR, _b("Playback Failed \n"));
+	return -1;
+    }
+#else 
+#endif
+    return 0;
+}
+
+static int read_input(void *p_buf, int buf_length, int *read_length, void *p_input)
+{
+    XAF_CHK_PTR(p_buf);
+    XAF_CHK_PTR(read_length);
+    XAF_CHK_PTR(p_input);
+
+#if !defined BOARD
+    FILE *fp = p_input;
+    *read_length = fread(p_buf, 1, buf_length, fp);
+#else
+#endif
+    return 0;
+}
+
+static int comp_process_entry(void *arg)
+{
+    void *p_comp;
+    void *p_input, *p_output;
+    xaf_comp_status comp_status;
+    xaf_info_t comp_info;
+    int input_over, read_length;
+    void * (*arg_arr)[3];
+    void *pg_pthread_exit_code = (void*)&g_pthread_exit_code;
+
+    XAF_CHK_PTR(arg);
+
+    arg_arr = arg;
+    p_comp   = (*arg_arr)[0];
+    p_input  = (*arg_arr)[1];
+    p_output = (*arg_arr)[2];
+    input_over = 0;
+    
+    XF_CHK_API(xaf_comp_process(NULL, p_comp, NULL, 0, XAF_EXEC_FLAG));
+    
+    while (1)
+    {
+        XF_CHK_API(xaf_comp_get_status(NULL, p_comp, &comp_status, &comp_info));
+        
+        if (comp_status == XAF_EXEC_DONE) break;
+
+        if (comp_status == XAF_NEED_INPUT && !input_over)
+        {
+            void *p_buf = (void *) comp_info.buf; 
+            int size    = comp_info.length;
+            
+            XF_CHK_API(read_input(p_buf, size, &read_length, p_input));
+
+            if (read_length) 
+                XF_CHK_API(xaf_comp_process(NULL, p_comp, (void *)comp_info.buf, read_length, XAF_INPUT_READY_FLAG));
+            else
+            {
+                XF_CHK_API(xaf_comp_process(NULL, p_comp, NULL, 0, XAF_INPUT_OVER_FLAG));
+                input_over = 1;
+            }
+        }
+        
+        if (comp_status == XAF_OUTPUT_READY)
+        {
+            void *p_buf = (void *) comp_info.buf;
+            int size    = comp_info.length;
+            
+            XF_CHK_API(consume_output(p_buf, size, p_output));
+            XF_CHK_API(xaf_comp_process(NULL, p_comp, (void *)comp_info.buf, comp_info.length, XAF_NEED_OUTPUT_FLAG));
+        }
+    }
+    pthread_exit(pg_pthread_exit_code);
+
+    return 0;
+}
+
+int main(int argc, const char **argv)
+{
+    void *p_adev = NULL;
+    void *p_decoder[MAX_INP_STRMS];
+    void *p_mixer;
+    mem_obj_t* mem_handle;
+    int num_comp = NUM_COMP_IN_GRAPH;
+    
+    xaf_comp_status dec_status;
+    xaf_info_t comp_info;
+
+    void *p_input[MAX_INP_STRMS], *p_output;
+        
+    xf_id_t dec_id[MAX_INP_STRMS];
+    int (*dec_setup[MAX_INP_STRMS])(void *p_comp);    
+
+    pthread_t dec_thread[MAX_INP_STRMS];
+    pthread_t mixer_thread;
+    void *dec_thread_args[MAX_INP_STRMS][3];
+    void *mixer_thread_args[3];
+
+    const char *ext; 
+    FILE *fp, *ofp;
+    void *dec_inbuf[MAX_INP_STRMS][2];
+    int buf_length = XAF_INBUF_SIZE;
+    int read_length;
+    int input_over = 0;
+    int i, j;   
+    int num_strms; 
+
+    unsigned int card = 0;
+    unsigned int device = 0;
+    unsigned int period_size = 1024;
+    unsigned int period_count = 4;
+
+    int pthread_error;
+    void *pthread_exit_code[3];
+
+    struct sigaction actions;
+    memset(&actions, 0, sizeof(actions));
+    sigemptyset(&actions.sa_mask);
+    actions.sa_flags = 0;
+    actions.sa_handler = thread_exit_handler;
+    sigaction(SIGUSR1,&actions,NULL);
+ 
+    /* ...initialize playback format */
+    pb_format.sample_rate = 48000;
+    pb_format.channels    = 2;
+    pb_format.pcm_width   = 16;
+
+    audio_frmwk_buf_size = 0; //unused
+    audio_comp_buf_size  = 0; //unused
+
+    print_banner("\'Audio decoder(PCM/Ogg-Vorbis) + Mixer\'");
+
+    /* ...initialize tracing facility */
+    TRACE_INIT("Xtensa Audio Framework - Sample Application");
+
+#if !defined BOARD
+    /* ...check input arguments */
+    if (argc < 2 || argc > (MAX_INP_STRMS+1))
+    {
+        TRACE(ERROR, _b("Usage: ./xaf-test <infile1> <infile2>\n"));
+        PRINT_USAGE;
+        return 0;
+    }
+    
+    argc--; 
+    for (i=0; i<argc; i++)
+    { 
+        ext = strrchr(argv[i+1], '.');
+        if (!ext)
+        {   
+            PRINT_USAGE;
+            return 0;
+        }
+        ext++;
+        if (!strcmp(ext, "pcm")) {
+     	    dec_id[i]    = "audio-decoder/pcm";
+            dec_setup[i] = pcm_setup;
+        }
+        else if (!strcmp(ext, "ogg")) {
+            dec_id[i]    = "audio-decoder/vorbis";
+            dec_setup[i] = vorbis_setup;
+        }
+        else {
+           TRACE(ERROR, _x("Unknown Decoder Extension '%s'"), ext);
+           PRINT_USAGE;
+           exit(-1);
+        }
+        /* ...open file */
+        if ((fp = fopen(argv[i+1], "rb")) == NULL)
+        {
+           TRACE(ERROR, _x("Failed to open '%s': %d"), argv[i+1], errno);
+           exit(-1);
+        }
+        p_input[i] = fp;
+    }
+    num_strms = i;
+
+    if ((ofp = fopen("dec-mix-out.pcm", "wb")) == NULL)
+    {
+       TRACE(ERROR, _x("Failed to open '%s': %d"), "dec-mix-out.pcm", errno);
+       exit(-1);
+    }
+    p_output = ofp;
+#endif
+
+    mem_handle = mem_init(); //initialize memory handler
+
+    XF_CHK_API(xaf_adev_open(&p_adev, audio_frmwk_buf_size, audio_comp_buf_size, mem_malloc, mem_free));
+
+    /* ...create mixer component */
+    XF_CHK_API(xaf_comp_create(p_adev, &p_mixer, "mixer", 0, 1, NULL, XAF_MIXER));
+    XF_CHK_API(mixer_setup(p_mixer, &pb_format));
+
+    for (i=0; i<num_strms; i++)
+    {
+        /* ...create decoder component */
+        XF_CHK_API(xaf_comp_create(p_adev, &p_decoder[i], dec_id[i], 2, 0, &dec_inbuf[i][0], XAF_DECODER));
+        XF_CHK_API((dec_setup[i])(p_decoder[i]));
+
+    	/* ...start decoder component */            
+        XF_CHK_API(xaf_comp_process(p_adev, p_decoder[i], NULL, 0, XAF_START_FLAG));
+    	
+	/* ...feed input to decoder component */
+        for (j=0; j<2; j++) 
+        {
+            XF_CHK_API(read_input(dec_inbuf[i][j], buf_length, &read_length, p_input[i]));
+
+            if (read_length) 
+                XF_CHK_API(xaf_comp_process(p_adev, p_decoder[i], dec_inbuf[i][j], read_length, XAF_INPUT_READY_FLAG));
+            else
+                break;
+        }
+    
+    	/* ...initialization loop */    
+        while (1)
+        {
+            XF_CHK_API(xaf_comp_get_status(p_adev, p_decoder[i], &dec_status, &comp_info));
+        
+            if (dec_status == XAF_INIT_DONE || dec_status == XAF_EXEC_DONE) break;
+
+            if (dec_status == XAF_NEED_INPUT && !input_over)
+            {
+                void *p_buf = (void *) comp_info.buf; 
+                int size    = comp_info.length;
+            
+                XF_CHK_API(read_input(p_buf, size, &read_length, p_input[i]));
+
+                if (read_length) 
+                    XF_CHK_API(xaf_comp_process(p_adev, p_decoder[i], p_buf, read_length, XAF_INPUT_READY_FLAG));
+                else
+                    break;
+            }
+        }
+
+        if (dec_status != XAF_INIT_DONE)
+        {
+            TRACE(ERROR, _x("Failed to init"));
+            exit(-1);
+        }
+
+        XF_CHK_API(xaf_connect(p_decoder[i], p_mixer, 4));
+    }
+
+    XF_CHK_API(xaf_comp_process(p_adev, p_mixer, NULL, 0, XAF_START_FLAG));
+    XF_CHK_API(xaf_comp_get_status(p_adev, p_mixer, &dec_status, &comp_info));
+            
+    if (dec_status != XAF_INIT_DONE)
+    {
+        TRACE(ERROR, _x("Failed to init"));
+        exit(-1);
+    }
+    
+    /* ...open playback device */
+    pb_handle = xa_playback_open(card, device, pb_format.channels, pb_format.sample_rate,
+		  	         pb_format.pcm_width, period_size, period_count); 
+    if (!pb_handle) {
+        TRACE(ERROR, _x("Playback open error\n"));
+	return -1;
+    }
+
+    for (i=0; i<num_strms; i++)
+    {
+        dec_thread_args[i][0] = p_decoder[i];
+        dec_thread_args[i][1] = p_input[i];
+        dec_thread_args[i][2] = p_output; 
+        pthread_create(&dec_thread[i], 0, (void *(*)(void*))&comp_process_entry, dec_thread_args[i]);
+    }
+        
+    mixer_thread_args[0] = p_mixer;
+    mixer_thread_args[1] = NULL; 
+    mixer_thread_args[2] = p_output; 
+    pthread_create(&mixer_thread, 0, (void *(*)(void*))comp_process_entry, &mixer_thread_args[0]);
+
+    for (i=0; i<num_strms; i++)
+    {
+      pthread_error = pthread_join(dec_thread[i], (void **) &pthread_exit_code[i]);
+      if(pthread_error)
+      {
+        TRACE(ERROR, _b("decode thread %d join error:%x\n"), i, pthread_error);
+      }
+    }
+    pthread_error = pthread_join(mixer_thread, (void **) &pthread_exit_code[i]);
+    if(pthread_error)
+    {
+      TRACE(ERROR, _b("mixer thread join error:%x\n"), pthread_error);
+    }
+
+    for (i=0; i<num_strms; i++)
+    {
+        XF_CHK_API(xaf_comp_delete(p_decoder[i]));
+        if (p_input[i]) fclose(p_input[i]);
+    }
+    XF_CHK_API(xaf_comp_delete(p_mixer));
+
+    /* ...exec done, clean-up */
+    xa_playback_close(pb_handle);
+
+    XF_CHK_API(xaf_adev_close(p_adev, 0 /*unused*/));
+    if (p_output) fclose(p_output);
+    
+    mem_exit();
+    XF_CHK_API(print_mem_mcps_info(mem_handle, num_comp));
+
+    return 0;
+}
+
diff --git a/hifi/xaf/host-apf/utest/xaf-dec-test.c b/hifi/xaf/host-apf/utest/xaf-dec-test.c
new file mode 100644
index 0000000..b83a0f9
--- /dev/null
+++ b/hifi/xaf/host-apf/utest/xaf-dec-test.c
@@ -0,0 +1,344 @@
+/*******************************************************************************
+* Copyright (C) 2018 Cadence Design Systems, Inc.
+* 
+* Permission is hereby granted, free of charge, to any person obtaining
+* a copy of this software and associated documentation files (the
+* "Software"), to use this Software with Cadence processor cores only and 
+* not with any other processors and platforms, subject to
+* the following conditions:
+* 
+* The above copyright notice and this permission notice shall be included
+* in all copies or substantial portions of the Software.
+* 
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+******************************************************************************/
+
+#define MODULE_TAG                      UTEST
+
+#include "xaf-utils-test.h"
+
+#include "audio/xa_vorbis_dec_api.h"
+#include "audio/xa-audio-decoder-api.h"
+
+#include "xa_playback.h"
+
+#define PRINT_USAGE do { fprintf(stderr, "\nUsage: %s <input-file>\n", argv[0]); \
+                         fprintf(stderr, "       Only .ogg and .pcm files are supported. \n"); \
+                         fprintf(stderr, "       Playback is configured @ 48kHz, 2 ch, 16 bits pcm. \n"); \
+                         fprintf(stderr, "       pcm output is written to dec-out.pcm, by default. \n\n"); \
+                       } while(0)
+
+    
+#define NUM_COMP_IN_GRAPH   1
+
+void *p_input, *p_output;
+pthread_t dec_thread;
+
+FILE *fp, *ofp=NULL;
+xaf_info_t comp_info;
+void *pb_handle = NULL;
+unsigned int card = 0;
+unsigned int device = 0;
+unsigned int period_size = 1024;
+unsigned int period_count = 4;
+
+/* ...playback format */    
+xaf_format_t pb_format;
+
+int g_pthread_exit_code=0x12345678;
+
+void thread_exit_handler(int sig)
+{
+    /* ...unused arg */
+    (void) sig;
+
+    pthread_exit(0);
+}
+
+static int vorbis_setup(void *p_decoder)
+{
+    int param[2];
+    
+    /* 1: Raw decode, 0: Ogg decode */
+    param[0] = XA_VORBISDEC_CONFIG_PARAM_RAW_VORBIS_FILE_MODE;
+    param[1] = 0;
+
+    XF_CHK_API(xaf_comp_set_config(p_decoder, 1, &param[0]));    
+    
+    return 0;
+}
+
+static int pcm_setup(void *p_pcm)
+{
+    int param[6];
+
+    param[0] = XA_CODEC_CONFIG_PARAM_SAMPLE_RATE;
+    param[1] = pb_format.sample_rate;
+    param[2] = XA_CODEC_CONFIG_PARAM_CHANNELS;
+    param[3] = pb_format.channels;
+    param[4] = XA_CODEC_CONFIG_PARAM_PCM_WIDTH;
+    param[5] = pb_format.pcm_width;
+
+    XF_CHK_API(xaf_comp_set_config(p_pcm, 3, &param[0]));    
+
+    return 0;
+}
+
+static int consume_output(void *p_buf, int buf_length, void *p_output)
+{
+	XAF_CHK_PTR(p_buf);
+	XAF_CHK_PTR(p_output);
+
+#if !defined BOARD
+	FILE *fp = p_output;
+	fwrite(p_buf, 1, buf_length, fp);    
+
+	if (xa_playback_buf(pb_handle, p_buf, buf_length)) {
+        TRACE(ERROR, _b("Playback Failed \n"));
+		return -1;
+	}	
+#else 
+#endif
+	return 0;
+}
+
+static int read_input(void *p_buf, int buf_length, int *read_length, void *p_input)
+{
+    XAF_CHK_PTR(p_buf);
+    XAF_CHK_PTR(read_length);
+    XAF_CHK_PTR(p_input);
+
+#if !defined BOARD
+    FILE *fp = p_input;
+    *read_length = fread(p_buf, 1, buf_length, fp);
+#else
+#endif
+    return 0;
+}
+
+static int comp_process_entry(void *arg)
+{
+    void *p_comp;
+    xaf_comp_status comp_status;
+    int input_over, read_length;
+    void *pg_pthread_exit_code = (void*)&g_pthread_exit_code;
+
+    XAF_CHK_PTR(arg);
+    XAF_CHK_PTR(p_input);
+    XAF_CHK_PTR(p_output);
+
+    p_comp = arg;
+    input_over = 0;
+    
+    XF_CHK_API(xaf_comp_process(NULL, p_comp, NULL, 0, XAF_EXEC_FLAG));
+
+    while (1)
+    {
+	
+        XF_CHK_API(xaf_comp_get_status(NULL, p_comp, &comp_status, &comp_info));
+        
+        if (comp_status == XAF_EXEC_DONE) break;
+
+        if (comp_status == XAF_NEED_INPUT && !input_over)
+        {
+            void *p_buf = (void *)comp_info.buf; 
+            int size    = comp_info.length;
+            
+            XF_CHK_API(read_input(p_buf, size, &read_length, p_input));
+
+            if (read_length) 
+                XF_CHK_API(xaf_comp_process(NULL, p_comp, (void *)comp_info.buf, read_length, XAF_INPUT_READY_FLAG));
+            else
+            {
+                XF_CHK_API(xaf_comp_process(NULL, p_comp, NULL, 0, XAF_INPUT_OVER_FLAG));
+                input_over = 1;
+            }
+        }
+        
+        if (comp_status == XAF_OUTPUT_READY)
+        {
+            void *p_buf = (void *)comp_info.buf;
+            int size    = comp_info.length;
+            
+            XF_CHK_API(consume_output(p_buf, size, p_output));
+            XF_CHK_API(xaf_comp_process(NULL, p_comp, (void *)comp_info.buf, comp_info.length, XAF_NEED_OUTPUT_FLAG));
+        }
+    }
+    pthread_exit(pg_pthread_exit_code);
+
+    return 0;
+}
+
+
+int main(int argc, const char **argv)
+{
+    void *p_adev = NULL;
+    void *p_decoder;
+    mem_obj_t* mem_handle;
+    int num_comp = NUM_COMP_IN_GRAPH;
+
+    xaf_comp_status dec_status;
+    void *dec_inbuf[2];
+    int buf_length = XAF_INBUF_SIZE;
+    int read_length;
+    int i;    
+    
+    xf_id_t dec_id;
+    int (*dec_setup)(void *p_comp);    
+    const char *ext;
+    int pthread_error;
+    void *pthread_exit_code;
+ 
+    struct sigaction actions;
+    memset(&actions, 0, sizeof(actions));
+    sigemptyset(&actions.sa_mask);
+    actions.sa_flags = 0;
+    actions.sa_handler = thread_exit_handler;
+    sigaction(SIGUSR1,&actions,NULL);
+
+    /* ...initialize playback format */
+    pb_format.sample_rate = 48000;
+    pb_format.channels    = 2;
+    pb_format.pcm_width   = 16;
+
+    audio_frmwk_buf_size = 0; //unused 
+    audio_comp_buf_size  = 0; //unused
+
+    print_banner("\'Audio decoder(PCM/Ogg-Vorbis)\'");
+
+    /* ...initialize tracing facility */
+    TRACE_INIT("Xtensa Audio Framework - Sample Application");
+
+#if !defined BOARD
+    /* ...check input arguments */
+    if (argc != 2)
+    {
+        TRACE(ERROR, _b("Usage: ./xaf-test <input-file-.ogg/.pcm>\n"));
+        PRINT_USAGE;
+        return 0;
+    }
+    
+        
+    ext = strrchr(argv[1], '.');
+    if (!ext)
+    {   
+        PRINT_USAGE;
+        return 0;
+    }
+    ext++;
+    if (!strcmp(ext, "pcm")) {
+    	dec_id    = "audio-decoder/pcm";
+        dec_setup = pcm_setup;
+    }
+    else if (!strcmp(ext, "ogg")) {
+    	dec_id    = "audio-decoder/vorbis";
+        dec_setup = vorbis_setup;
+    }
+    else {
+    	TRACE(ERROR, _x("Unknown Decoder Extension '%s'"), ext);
+        PRINT_USAGE;
+        exit(-1);
+    }
+
+    /* ...open file */
+    if ((fp = fopen(argv[1], "rb")) == NULL)
+    {
+       TRACE(ERROR, _x("Failed to open '%s': %d"), argv[1], errno);
+       exit(-1);
+    }
+    if ((ofp = fopen("/data/dec-out.pcm", "wb")) == NULL)
+    {
+       TRACE(ERROR, _x("Failed to open '%s': %d"), "/data/dec-out.pcm", errno);
+       exit(-1);
+    }
+    p_input  = fp;
+    p_output = ofp;
+#endif
+
+    mem_handle = mem_init(); //initialize memory handler
+
+    XF_CHK_API(xaf_adev_open(&p_adev, audio_frmwk_buf_size, audio_comp_buf_size, mem_malloc, mem_free));
+
+    /* ...create decoder component */
+    XF_CHK_API(xaf_comp_create(p_adev, &p_decoder, dec_id, 2, 1, &dec_inbuf[0], XAF_DECODER));
+    XF_CHK_API(dec_setup(p_decoder));
+
+    /* ...start decoder component */            
+    XF_CHK_API(xaf_comp_process(p_adev, p_decoder, NULL, 0, XAF_START_FLAG));
+
+    /* ...feed input to decoder component */
+    for (i=0; i<2; i++) 
+    {
+        XF_CHK_API(read_input(dec_inbuf[i], buf_length, &read_length, p_input));
+
+        if (read_length) 
+            XF_CHK_API(xaf_comp_process(p_adev, p_decoder, dec_inbuf[i], read_length, XAF_INPUT_READY_FLAG));
+        else 
+            break;
+    }
+
+    /* ...initialization loop */    
+    while (1)
+    {
+	    XF_CHK_API(xaf_comp_get_status(p_adev, p_decoder, &dec_status, &comp_info));
+
+	    if (dec_status == XAF_INIT_DONE || dec_status == XAF_EXEC_DONE)
+	    {
+		    pb_handle = xa_playback_open(card, device, pb_format.channels, pb_format.sample_rate,
+				         pb_format.pcm_width, period_size, period_count); 
+		    if (!pb_handle) {
+			    TRACE(ERROR, _x("Playback open error\n"));
+			    return -1;
+		    }
+
+		    break;
+	    }
+
+	    if (dec_status == XAF_NEED_INPUT)
+	    {
+		    void *p_buf = (void *) comp_info.buf; 
+		    int size    = comp_info.length;
+
+		    XF_CHK_API(read_input(p_buf, size, &read_length, p_input));
+
+		    if (read_length) 
+			    XF_CHK_API(xaf_comp_process(p_adev, p_decoder, p_buf, read_length, XAF_INPUT_READY_FLAG));
+		    else
+			    break;
+	    }
+    }
+    
+    if (dec_status != XAF_INIT_DONE)
+    {
+        TRACE(ERROR, _x("Failed to init"));
+        exit(-1);
+    }
+
+    pthread_create(&dec_thread, 0, (void *(*)(void *))&comp_process_entry, p_decoder);
+
+    pthread_error = pthread_join(dec_thread, (void **) &pthread_exit_code);
+    if(pthread_error)
+    {
+      TRACE(ERROR, _b("decode thread join error:%x\n"), pthread_error);
+    }
+
+    /* ...exec done, clean-up */
+    XF_CHK_API(xaf_comp_delete(p_decoder));
+    xa_playback_close(pb_handle);
+    XF_CHK_API(xaf_adev_close(p_adev, 0 /*unused*/));
+    if (fp)  fclose(fp);
+    if (ofp) fclose(ofp);
+    
+    mem_exit();
+    XF_CHK_API(print_mem_mcps_info(mem_handle, num_comp));
+
+    return 0;
+}
+
diff --git a/hifi/xaf/host-apf/utest/xaf-mem-test.c b/hifi/xaf/host-apf/utest/xaf-mem-test.c
new file mode 100644
index 0000000..1343c90
--- /dev/null
+++ b/hifi/xaf/host-apf/utest/xaf-mem-test.c
@@ -0,0 +1,150 @@
+/*******************************************************************************
+* Copyright (C) 2018 Cadence Design Systems, Inc.
+* 
+* Permission is hereby granted, free of charge, to any person obtaining
+* a copy of this software and associated documentation files (the
+* "Software"), to use this Software with Cadence processor cores only and 
+* not with any other processors and platforms, subject to
+* the following conditions:
+* 
+* The above copyright notice and this permission notice shall be included
+* in all copies or substantial portions of the Software.
+* 
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+******************************************************************************/
+#include <stdio.h>
+#include <stdlib.h>
+
+#include "xa_type_def.h"
+
+/* ...debugging facility */
+#include "xaf-utils-test.h"
+
+mem_obj_t g_mem_obj;
+
+void* mem_malloc(int size, int id)
+{
+    int index;
+    void* heap_ptr = NULL;
+	
+    if(id == XAF_MEM_ID_DEV)
+    {
+        index = g_mem_obj.num_malloc_dev;
+	if(index >= MEM_NUM_MEM_ALLOC-1)
+	{
+	    heap_ptr = NULL;
+	}
+	else
+	{
+	    heap_ptr = malloc(size);
+            g_mem_obj.num_malloc_dev++;
+            g_mem_obj.mem_dev[index].heap_ptr = heap_ptr;
+            g_mem_obj.mem_dev[index].size = size;
+            g_mem_obj.persi_mem_dev += size;
+	}
+    }
+    else if(id == XAF_MEM_ID_COMP)
+    {
+        index = g_mem_obj.num_malloc_comp;
+	if(index >= MEM_NUM_MEM_ALLOC-1)
+	{
+	    heap_ptr = NULL;
+	}
+	else
+	{
+	    heap_ptr = malloc(size);
+            g_mem_obj.num_malloc_comp++;
+            g_mem_obj.mem_comp[index].heap_ptr = heap_ptr;
+            g_mem_obj.mem_comp[index].size = size;
+            g_mem_obj.persi_mem_comp += size;
+        }			
+    }
+    return heap_ptr;
+}
+
+int get_heap_ptr_index(void* p_heap, int id)
+{
+    int idx;
+    
+    idx = -1;
+    if(id == XAF_MEM_ID_DEV)
+    {
+        for(idx = 0; idx < MEM_NUM_MEM_ALLOC; idx++)
+        {
+            if(g_mem_obj.mem_dev[idx].heap_ptr == p_heap)
+                break;            
+        }
+    }
+    
+    else if(id == XAF_MEM_ID_COMP)
+    {        
+        for(idx = 0; idx < MEM_NUM_MEM_ALLOC; idx++)
+        {
+            if(g_mem_obj.mem_comp[idx].heap_ptr == p_heap)
+                break;            
+        }
+    }
+    return idx;
+}
+
+void mem_free(void * heap_ptr, int id)
+{
+    int index;
+    int size;
+    
+    index = get_heap_ptr_index(heap_ptr, id);
+    
+    if (index != -1)
+    {
+        if(id == XAF_MEM_ID_DEV)
+        {
+	    size=g_mem_obj.mem_dev[index].size;
+            g_mem_obj.mem_dev[index].size = 0;
+            g_mem_obj.num_malloc_dev--;
+            free(heap_ptr);
+            g_mem_obj.mem_dev[index].heap_ptr = NULL;
+        }
+        else if(id == XAF_MEM_ID_COMP)
+        {
+	    size=g_mem_obj.mem_comp[index].size;
+            g_mem_obj.mem_comp[index].size = 0;
+            g_mem_obj.num_malloc_comp--;
+            free(heap_ptr);
+            g_mem_obj.mem_comp[index].heap_ptr = NULL;
+        }
+    }
+    return;
+}
+
+int mem_get_alloc_size(mem_obj_t* pmem_handle, int id)
+{
+    int mem_size = 0;
+    if(id == XAF_MEM_ID_DEV)
+        mem_size =  pmem_handle->persi_mem_dev;
+    else if(id == XAF_MEM_ID_COMP)
+        mem_size = pmem_handle->persi_mem_comp;
+    return mem_size;
+}
+
+void* mem_init()
+{
+    void* ptr;
+    ptr = &g_mem_obj;
+    return ptr;
+}
+
+void mem_exit()
+{
+    if((g_mem_obj.num_malloc_dev != 0)||(g_mem_obj.num_malloc_comp != 0))
+    {
+        fprintf(stdout,"Memory leaks\n");
+    }
+    return;
+}
diff --git a/hifi/xaf/host-apf/utest/xaf-utils-test.c b/hifi/xaf/host-apf/utest/xaf-utils-test.c
new file mode 100644
index 0000000..79c6710
--- /dev/null
+++ b/hifi/xaf/host-apf/utest/xaf-utils-test.c
@@ -0,0 +1,69 @@
+/*******************************************************************************
+* Copyright (C) 2018 Cadence Design Systems, Inc.
+* 
+* Permission is hereby granted, free of charge, to any person obtaining
+* a copy of this software and associated documentation files (the
+* "Software"), to use this Software with Cadence processor cores only and 
+* not with any other processors and platforms, subject to
+* the following conditions:
+* 
+* The above copyright notice and this permission notice shall be included
+* in all copies or substantial portions of the Software.
+* 
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+******************************************************************************/
+#include <stdio.h>
+#include <string.h>
+
+#include "xaf-utils-test.h"
+
+int audio_frmwk_buf_size;
+int audio_comp_buf_size;
+
+int print_banner(char *app_name)
+{
+    /*
+    XAF_CHK_PTR(ver_info[0], "print_verinfo");
+    XAF_CHK_PTR(ver_info[1], "print_verinfo");
+    XAF_CHK_PTR(ver_info[2], "print_verinfo");
+    */
+
+    fprintf(stdout, "******************************************************************************\n");
+    fprintf(stdout, "Cadence Audio Framework (Hosted) : %s \n",app_name);
+    fprintf(stdout, "Copyright (c) 2018 Cadence Design Systems, Inc.\n");
+    /*fprintf(stdout, "Lib Name        : %s\n", ver_info[0]);
+    fprintf(stdout, "Lib Version     : %s\n", ver_info[1]);
+    fprintf(stdout, "API Version     : %s\n", ver_info[2]);*/
+    fprintf(stdout, "******************************************************************************\n");
+
+    return 0;
+}
+
+int print_mem_mcps_info(mem_obj_t* mem_handle, int num_comp)
+{
+    int tot_dev_mem_size, tot_comp_mem_size, tot_size;
+
+    /* ...unused arg */
+    (void) num_comp;
+
+    /* ...printing memory info*/
+
+    tot_dev_mem_size = mem_get_alloc_size(mem_handle, XAF_MEM_ID_DEV);
+    tot_comp_mem_size = mem_get_alloc_size(mem_handle, XAF_MEM_ID_COMP);
+    tot_size = tot_dev_mem_size + tot_comp_mem_size;
+
+    fprintf(stdout,"Shared Memory between AP and DSP for IPC: %8d \n", XF_CFG_REMOTE_IPC_POOL_SIZE);
+    fprintf(stdout,"Memory allocated on AP  for Device      : %8d \n", tot_dev_mem_size);
+    fprintf(stdout,"Memory allocated on AP  for Components  : %8d \n", tot_comp_mem_size);
+    fprintf(stdout,"Memory allocated on DSP for Components  : %8d \n", XF_CFG_LOCAL_POOL_SIZE);
+
+    return 0;
+}
+
diff --git a/hifi/xaf/release.txt b/hifi/xaf/release.txt
new file mode 100755
index 0000000..cebd1e2
--- /dev/null
+++ b/hifi/xaf/release.txt
@@ -0,0 +1,24 @@
+======================================================================
+Xtensa Audio Framework (XAF) - Hosted solution
+======================================================================
+
+======================================================================
+Revision History
+======================================================================
+
+Version 0.7_Alpha API 1.1 : April 17, 2018
+
++ Alpha Release
++ Built with RG.5 tools
+
++ Added copyrights for makefiles and assembly files.
++ Added float-print (%f) support in DSP trace logs.
+
+----------------------------------------------------------------------
+
+Version 0.6_Alpha API 1.1 : February 15, 2018
+
++ Alpha Release
++ Built with RG.5 tools
+
+----------------------------------------------------------------------
diff --git a/hikey960/device-hikey960.mk b/hikey960/device-hikey960.mk
index fba39a4..dc1c52a 100644
--- a/hikey960/device-hikey960.mk
+++ b/hikey960/device-hikey960.mk
@@ -42,6 +42,14 @@
 PRODUCT_USE_DYNAMIC_PARTITIONS := true
 PRODUCT_USE_DYNAMIC_PARTITION_SIZE :=true
 
+# Copy hifi firmware
+PRODUCT_COPY_FILES += \
+	device/linaro/hikey/hifi/firmware/hifi-hikey960.img:$(TARGET_COPY_OUT_VENDOR)/firmware/hifi/hifi.img
+
+PRODUCT_PACKAGES += \
+	dhifimesg
+
+
 # Build HiKey960 HDMI audio HAL. Experimental only may not work. FIXME
 PRODUCT_PACKAGES += audio.primary.hikey960
 
diff --git a/kernel-headers/linux/audio_hifi.h b/kernel-headers/linux/audio_hifi.h
new file mode 100644
index 0000000..2fff5d9
--- /dev/null
+++ b/kernel-headers/linux/audio_hifi.h
@@ -0,0 +1,42 @@
+#ifndef _AUDIO_HIFI_H
+#define _AUDIO_HIFI_H
+
+#include <linux/types.h>
+
+struct misc_io_dump_buf_param {
+	uint64_t user_buf;
+	unsigned int clear;	/*clear current log buf */
+	unsigned int buf_size;
+};
+
+struct misc_io_pcm_buf_param {
+	uint64_t buf;
+	uint32_t buf_size;
+};
+
+#define HIFI_DSP_MISC_DRIVER	"/dev/hifi_misc"
+
+#define HIFI_MISC_IOCTL_ASYNCMSG		_IOWR('A', 0x70, struct misc_io_async_param)
+#define HIFI_MISC_IOCTL_SYNCMSG			_IOW('A', 0x71, struct misc_io_sync_param)
+#define HIFI_MISC_IOCTL_SENDDATA_SYNC		_IOW('A', 0x72, struct misc_io_senddata_sync_param)
+#define HIFI_MISC_IOCTL_GET_PHYS		_IOWR('A', 0x73, struct misc_io_get_phys_param)
+#define HIFI_MISC_IOCTL_TEST			_IOWR('A', 0x74, struct misc_io_senddata_sync_param)
+#define HIFI_MISC_IOCTL_WRITE_PARAMS		_IOWR('A', 0x75, struct misc_io_sync_param)
+#define HIFI_MISC_IOCTL_DUMP_HIFI		_IOWR('A', 0x76, struct misc_io_dump_buf_param)
+#define HIFI_MISC_IOCTL_DUMP_CODEC		_IOWR('A', 0x77, struct misc_io_dump_buf_param)
+#define HIFI_MISC_IOCTL_WAKEUP_THREAD		_IOW('A',  0x78, unsigned int)
+#define HIFI_MISC_IOCTL_DISPLAY_MSG		_IOWR('A', 0x79, struct misc_io_dump_buf_param)
+#define HIFI_MISC_IOCTL_WAKEUP_PCM_READ_THREAD	_IOW('A',  0x7a, unsigned int)
+#define HIFI_MISC_IOCTL_PCM_GAIN		_IOW('A',  0x7b, struct misc_io_pcm_buf_param)
+#define HIFI_MISC_IOCTL_XAF_IPC_MSG_SEND	_IOW('A',  0x7c, xf_proxy_msg_t)
+#define HIFI_MISC_IOCTL_XAF_IPC_MSG_RECV	_IOR('A', 0x7d, xf_proxy_msg_t)
+
+#ifdef CLT_VOICE
+#define CLT_HIFI_MISC_IOCTL_SEND_VOICE		_IOWR('A', 0x90, struct misc_io_async_param)
+#endif
+
+#define HIFI_MISC_IOCTL_GET_VOICE_BSD_PARAM	_IOWR('A',  0x7c, unsigned int)
+
+#define DRV_DSP_UART_TO_MEM_SIZE	0x7f000
+
+#endif /* _AUDIO_HIFI_H */