x86: Add chromebook_link board
This board is a 'bare' version of the existing 'link 'board. It does not
require coreboot to run, but is intended to start directly from the reset
vector.
This initial commit has place holders for a wide range of features. These
will be added in follow-on patches and series. So far it cannot be booted
as there is no ROM image produced, but it does build without errors.
Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/arch/x86/cpu/ivybridge/Kconfig b/arch/x86/cpu/ivybridge/Kconfig
new file mode 100644
index 0000000..177247e
--- /dev/null
+++ b/arch/x86/cpu/ivybridge/Kconfig
@@ -0,0 +1,171 @@
+#
+# From Coreboot src/northbridge/intel/sandybridge/Kconfig
+#
+# Copyright (C) 2010 Google Inc.
+#
+# SPDX-License-Identifier: GPL-2.0
+
+
+config NORTHBRIDGE_INTEL_SANDYBRIDGE
+ bool
+ select CACHE_MRC_BIN
+ select CPU_INTEL_MODEL_206AX
+
+config NORTHBRIDGE_INTEL_IVYBRIDGE
+ bool
+ select CACHE_MRC_BIN
+ select CPU_INTEL_MODEL_306AX
+
+if NORTHBRIDGE_INTEL_SANDYBRIDGE
+
+config VGA_BIOS_ID
+ string
+ default "8086,0106"
+
+config CACHE_MRC_SIZE_KB
+ int
+ default 256
+
+config MRC_CACHE_BASE
+ hex
+ default 0xff800000
+
+config MRC_CACHE_LOCATION
+ hex
+ depends on !CHROMEOS
+ default 0x1ec000
+
+config MRC_CACHE_SIZE
+ hex
+ depends on !CHROMEOS
+ default 0x10000
+
+config DCACHE_RAM_BASE
+ hex
+ default 0xff7f0000
+
+config DCACHE_RAM_SIZE
+ hex
+ default 0x10000
+
+endif
+
+if NORTHBRIDGE_INTEL_IVYBRIDGE
+
+config VGA_BIOS_ID
+ string
+ default "8086,0166"
+
+config EXTERNAL_MRC_BLOB
+ bool
+ default n
+
+config CACHE_MRC_SIZE_KB
+ int
+ default 512
+
+config MRC_CACHE_BASE
+ hex
+ default 0xff800000
+
+config MRC_CACHE_LOCATION
+ hex
+ depends on !CHROMEOS
+ default 0x370000
+
+config MRC_CACHE_SIZE
+ hex
+ depends on !CHROMEOS
+ default 0x10000
+
+config DCACHE_RAM_BASE
+ hex
+ default 0xff7e0000
+
+config DCACHE_RAM_SIZE
+ hex
+ default 0x20000
+
+endif
+
+if NORTHBRIDGE_INTEL_SANDYBRIDGE || NORTHBRIDGE_INTEL_IVYBRIDGE
+
+config HAVE_MRC
+ bool "Add a System Agent binary"
+ help
+ Select this option to add a System Agent binary to
+ the resulting U-Boot image. MRC stands for Memory Reference Code.
+ It is a binary blob which U-Boot uses to set up SDRAM.
+
+ Note: Without this binary U-Boot will not be able to set up its
+ SDRAM so will not boot.
+
+config DCACHE_RAM_MRC_VAR_SIZE
+ hex
+ default 0x4000
+ help
+ This is the amount of CAR (Cache as RAM) reserved for use by the
+ memory reference code. This should be set to 16KB (0x4000 hex)
+ so that MRC has enough space to run.
+
+config MRC_FILE
+ string "Intel System Agent path and filename"
+ depends on HAVE_MRC
+ default "systemagent-ivybridge.bin" if NORTHBRIDGE_INTEL_IVYBRIDGE
+ default "systemagent-sandybridge.bin" if NORTHBRIDGE_INTEL_SANDYBRIDGE
+ help
+ The path and filename of the file to use as System Agent
+ binary.
+
+config CPU_SPECIFIC_OPTIONS
+ def_bool y
+ select SMM_TSEG
+ select ARCH_BOOTBLOCK_X86_32
+ select ARCH_ROMSTAGE_X86_32
+ select ARCH_RAMSTAGE_X86_32
+ select SMP
+ select SSE2
+ select UDELAY_LAPIC
+ select CPU_MICROCODE_IN_CBFS
+ select TSC_SYNC_MFENCE
+ select HAVE_INTEL_ME
+
+config SMM_TSEG_SIZE
+ hex
+ default 0x800000
+
+config ENABLE_VMX
+ bool "Enable VMX for virtualization"
+ default n
+ help
+ Virtual Machine Extensions are provided in many x86 CPUs. These
+ provide various facilities for allowing a host OS to provide an
+ environment where potentially several guest OSes have only
+ limited access to the underlying hardware. This is achieved
+ without resorting to software trapping and/or instruction set
+ emulation (which would be very slow).
+
+ Intel's implementation of this is called VT-x. This option enables
+ VT-x this so that the OS that is booted by U-Boot can make use of
+ these facilities. If this option is not enabled, then the host OS
+ will be unable to support virtualisation, or it will run very
+ slowly.
+
+endif
+
+config CPU_INTEL_SOCKET_RPGA989
+ bool
+
+if CPU_INTEL_SOCKET_RPGA989
+
+config SOCKET_SPECIFIC_OPTIONS # dummy
+ def_bool y
+ select MMX
+ select SSE
+ select CACHE_AS_RAM
+
+config CACHE_MRC_BIN
+ bool
+ default n
+
+endif
diff --git a/arch/x86/cpu/ivybridge/Makefile b/arch/x86/cpu/ivybridge/Makefile
new file mode 100644
index 0000000..dbcd4bd
--- /dev/null
+++ b/arch/x86/cpu/ivybridge/Makefile
@@ -0,0 +1,9 @@
+#
+# Copyright (c) 2014 Google, Inc
+#
+# SPDX-License-Identifier: GPL-2.0+
+#
+
+obj-y += car.o
+obj-y += cpu.o
+obj-y += sdram.o
diff --git a/arch/x86/cpu/ivybridge/car.S b/arch/x86/cpu/ivybridge/car.S
new file mode 100644
index 0000000..0480813
--- /dev/null
+++ b/arch/x86/cpu/ivybridge/car.S
@@ -0,0 +1,20 @@
+/*
+ * Copyright (c) 2014 Google, Inc
+ *
+ * From Coreboot file cpu/intel/model_206ax/cache_as_ram.inc
+ *
+ * Copyright (C) 2000,2007 Ronald G. Minnich <rminnich@gmail.com>
+ * Copyright (C) 2005 Tyan (written by Yinghai Lu for Tyan)
+ * Copyright (C) 2007-2008 coresystems GmbH
+ * Copyright (C) 2012 Kyösti Mälkki <kyosti.malkki@gmail.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0
+ */
+
+#include <common.h>
+
+ /* Note: ebp must not be touched in this code */
+.globl car_init
+car_init:
+ /* TODO: Add cache-as-RAM init here */
+ jmp car_init_ret
diff --git a/arch/x86/cpu/ivybridge/cpu.c b/arch/x86/cpu/ivybridge/cpu.c
new file mode 100644
index 0000000..1cbdaaf
--- /dev/null
+++ b/arch/x86/cpu/ivybridge/cpu.c
@@ -0,0 +1,42 @@
+/*
+ * Copyright (c) 2014 Google, Inc
+ * (C) Copyright 2008
+ * Graeme Russ, graeme.russ@gmail.com.
+ *
+ * Some portions from coreboot src/mainboard/google/link/romstage.c
+ * Copyright (C) 2007-2010 coresystems GmbH
+ * Copyright (C) 2011 Google Inc.
+ *
+ * SPDX-License-Identifier: GPL-2.0
+ */
+
+#include <common.h>
+#include <asm/cpu.h>
+#include <asm/processor.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+int arch_cpu_init(void)
+{
+ int ret;
+
+ timer_set_base(rdtsc());
+
+ ret = x86_cpu_init_f();
+ if (ret)
+ return ret;
+
+ return 0;
+}
+
+int print_cpuinfo(void)
+{
+ char processor_name[CPU_MAX_NAME_LEN];
+ const char *name;
+
+ /* Print processor name */
+ name = cpu_get_name(processor_name);
+ printf("CPU: %s\n", name);
+
+ return 0;
+}
diff --git a/arch/x86/cpu/ivybridge/sdram.c b/arch/x86/cpu/ivybridge/sdram.c
new file mode 100644
index 0000000..5f9ae5e
--- /dev/null
+++ b/arch/x86/cpu/ivybridge/sdram.c
@@ -0,0 +1,20 @@
+/*
+ * Copyright (c) 2011 The Chromium OS Authors.
+ * (C) Copyright 2010,2011
+ * Graeme Russ, <graeme.russ@gmail.com>
+ *
+ * Portions from Coreboot mainboard/google/link/romstage.c
+ * Copyright (C) 2007-2010 coresystems GmbH
+ * Copyright (C) 2011 Google Inc.
+ *
+ * SPDX-License-Identifier: GPL-2.0
+ */
+
+#include <common.h>
+
+int dram_init(void)
+{
+ /* TODO: Set up DRAM */
+
+ return 0;
+}