soc/mediatek/common: Add common API for loading firmwares

Add mtk_init_mcu to load the firmware to the specified memory address
and run the firmware. This function also measures the load time and the
blob size. For example:

mtk_init_mcu: Loaded (and reset) dpm.pm in 15 msecs (14004 bytes)

Signed-off-by: Yidi Lin <yidi.lin@mediatek.com>
Change-Id: Ie94001bbda25fe015f43172e92a1006e059de223
Reviewed-on: https://review.coreboot.org/c/coreboot/+/46930
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Hung-Te Lin <hungte@chromium.org>
This commit is contained in:
Yidi Lin 2020-10-29 13:01:28 +08:00 committed by Hung-Te Lin
parent 6bc1296cbd
commit 7ba3775114
3 changed files with 57 additions and 0 deletions

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@ -0,0 +1,18 @@
/* SPDX-License-Identifier: GPL-2.0-only */
#ifndef SOC_MEDIATEK_MTLIB_COMMON_H
#define SOC_MEDIATEK_MTLIB_COMMON_H
struct mtk_mcu {
const char *firmware_name; /* The firmware file name in CBFS */
void *run_address; /* The address for running the firmware */
size_t run_size; /* The buffer for loading the firmware */
void *load_buffer; /* The buffer size */
size_t buffer_size; /* The firmware real size */
void *priv; /* The additional data required by the reset callback */
void (*reset)(struct mtk_mcu *mcu); /* The reset callback */
};
int mtk_init_mcu(struct mtk_mcu *mcu);
#endif /* SOC_MEDIATEK_MTLIB_COMMON_H */

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@ -0,0 +1,38 @@
/* SPDX-License-Identifier: GPL-2.0-only */
#include <arch/barrier.h>
#include <cbfs.h>
#include <console/console.h>
#include <soc/mcu_common.h>
#include <soc/symbols.h>
#include <timer.h>
int mtk_init_mcu(struct mtk_mcu *mcu)
{
struct stopwatch sw;
if (!mcu)
return CB_ERR_ARG;
stopwatch_init(&sw);
mcu->run_size = cbfs_load(mcu->firmware_name, mcu->load_buffer, mcu->buffer_size);
if (mcu->run_size == 0) {
printk(BIOS_ERR, "%s: Failed to load %s\n", __func__, mcu->firmware_name);
return CB_ERR;
}
if (mcu->run_address) {
memcpy(mcu->run_address, mcu->load_buffer, mcu->run_size);
/* Memory barrier to ensure data is flushed before resetting MCU. */
mb();
}
if (mcu->reset)
mcu->reset(mcu);
printk(BIOS_DEBUG, "%s: Loaded (and reset) %s in %ld msecs (%zd bytes)\n",
__func__, mcu->firmware_name, stopwatch_duration_msecs(&sw), mcu->run_size);
return CB_SUCCESS;
}

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@ -39,6 +39,7 @@ ramstage-y += flash_controller.c
ramstage-y += ../common/gpio.c gpio.c
ramstage-y += emi.c
ramstage-$(CONFIG_SPI_FLASH) += ../common/spi.c spi.c
ramstage-y += ../common/mcu.c
ramstage-y += ../common/mmu_operations.c mmu_operations.c
ramstage-y += ../common/mtcmos.c mtcmos.c
ramstage-y += soc.c