diff options
Diffstat (limited to 'src/soc')
| -rw-r--r-- | src/soc/mediatek/common/include/soc/mcu_common.h | 18 | ||||
| -rw-r--r-- | src/soc/mediatek/common/mcu.c | 38 | ||||
| -rw-r--r-- | src/soc/mediatek/mt8192/Makefile.inc | 1 |
3 files changed, 57 insertions, 0 deletions
diff --git a/src/soc/mediatek/common/include/soc/mcu_common.h b/src/soc/mediatek/common/include/soc/mcu_common.h new file mode 100644 index 0000000000..974da52f35 --- /dev/null +++ b/src/soc/mediatek/common/include/soc/mcu_common.h @@ -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 */ diff --git a/src/soc/mediatek/common/mcu.c b/src/soc/mediatek/common/mcu.c new file mode 100644 index 0000000000..d0a1107548 --- /dev/null +++ b/src/soc/mediatek/common/mcu.c @@ -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; +} diff --git a/src/soc/mediatek/mt8192/Makefile.inc b/src/soc/mediatek/mt8192/Makefile.inc index 421968d85a..8c7fe0d2a9 100644 --- a/src/soc/mediatek/mt8192/Makefile.inc +++ b/src/soc/mediatek/mt8192/Makefile.inc @@ -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 |