remoteproc: uclass: Add methods to load firmware to rproc and boot rproc
Add APIs to set a firmware_name to a rproc and boot the rproc with the
same firmware.
Clients can call rproc_set_firmware() API to set firmware_name for a rproc
whereas rproc_boot() will load the firmware set by rproc_set_firmware() to
a buffer by calling request_firmware_into_buf(). rproc_boot() will then
load the firmware file to the remote processor and start the remote
processor.
Signed-off-by: MD Danish Anwar <danishanwar@ti.com>
Acked-by: Ravi Gunasekaran <r-gunasekaran@ti.com>
Reviewed-by: Roger Quadros <rogerq@kernel.org>
diff --git a/drivers/remoteproc/Kconfig b/drivers/remoteproc/Kconfig
index 781de53..a49802c 100644
--- a/drivers/remoteproc/Kconfig
+++ b/drivers/remoteproc/Kconfig
@@ -102,4 +102,11 @@
help
Say 'y' here to add support for TI' K3 remoteproc driver.
+config REMOTEPROC_MAX_FW_SIZE
+ hex "Maximum size of firmware file that needs to be loaded to the remote processor"
+ default 0x10000
+ help
+ Maximum size of the firmware file (elf, binary) that needs to be
+ loaded to the remote processor.
+
endmenu
diff --git a/drivers/remoteproc/rproc-uclass.c b/drivers/remoteproc/rproc-uclass.c
index 28b362c..aa7f758 100644
--- a/drivers/remoteproc/rproc-uclass.c
+++ b/drivers/remoteproc/rproc-uclass.c
@@ -13,6 +13,7 @@
#include <log.h>
#include <malloc.h>
#include <virtio_ring.h>
+#include <fs_loader.h>
#include <remoteproc.h>
#include <asm/io.h>
#include <dm/device-internal.h>
@@ -961,3 +962,106 @@
return 1;
}
+
+int rproc_set_firmware(struct udevice *rproc_dev, const char *fw_name)
+{
+ struct dm_rproc_uclass_pdata *uc_pdata;
+ int len;
+ char *p;
+
+ if (!rproc_dev || !fw_name)
+ return -EINVAL;
+
+ uc_pdata = dev_get_uclass_plat(rproc_dev);
+ if (!uc_pdata)
+ return -EINVAL;
+
+ len = strcspn(fw_name, "\n");
+ if (!len) {
+ debug("invalid firmware name\n");
+ return -EINVAL;
+ }
+
+ if (uc_pdata->fw_name)
+ free(uc_pdata->fw_name);
+
+ p = strndup(fw_name, len);
+ if (!p)
+ return -ENOMEM;
+
+ uc_pdata->fw_name = p;
+
+ return 0;
+}
+
+#if CONFIG_IS_ENABLED(FS_LOADER)
+int rproc_boot(struct udevice *rproc_dev)
+{
+ struct dm_rproc_uclass_pdata *uc_pdata;
+ struct udevice *fs_loader;
+ int core_id, ret = 0;
+ char *firmware;
+ void *addr;
+
+ if (!rproc_dev)
+ return -EINVAL;
+
+ uc_pdata = dev_get_uclass_plat(rproc_dev);
+ if (!uc_pdata)
+ return -EINVAL;
+
+ core_id = dev_seq(rproc_dev);
+ firmware = uc_pdata->fw_name;
+ if (!firmware) {
+ debug("No firmware name set for rproc core %d\n", core_id);
+ return -EINVAL;
+ }
+
+ /* Initialize all rproc cores */
+ if (!rproc_is_initialized()) {
+ ret = rproc_init();
+ if (ret) {
+ debug("rproc_init() failed: %d\n", ret);
+ return ret;
+ }
+ }
+
+ /* Loading firmware to a given address */
+ ret = get_fs_loader(&fs_loader);
+ if (ret) {
+ debug("could not get fs loader: %d\n", ret);
+ return ret;
+ }
+
+ if (CONFIG_REMOTEPROC_MAX_FW_SIZE) {
+ addr = malloc(CONFIG_REMOTEPROC_MAX_FW_SIZE);
+ if (!addr)
+ return -ENOMEM;
+ } else {
+ debug("CONFIG_REMOTEPROC_MAX_FW_SIZE not defined\n");
+ return -EINVAL;
+ }
+
+ ret = request_firmware_into_buf(fs_loader, firmware, addr, CONFIG_REMOTEPROC_MAX_FW_SIZE,
+ 0);
+ if (ret < 0) {
+ debug("could not request %s: %d\n", firmware, ret);
+ goto free_buffer;
+ }
+
+ ret = rproc_load(core_id, (ulong)addr, ret);
+ if (ret) {
+ debug("failed to load %s to rproc core %d from addr 0x%08lX err %d\n",
+ uc_pdata->fw_name, core_id, (ulong)addr, ret);
+ goto free_buffer;
+ }
+
+ ret = rproc_start(core_id);
+ if (ret)
+ debug("failed to start rproc core %d\n", core_id);
+
+free_buffer:
+ free(addr);
+ return ret;
+}
+#endif