summaryrefslogtreecommitdiff
path: root/src/soc
diff options
context:
space:
mode:
Diffstat (limited to 'src/soc')
-rw-r--r--src/soc/mediatek/common/include/soc/mcu_common.h18
-rw-r--r--src/soc/mediatek/common/mcu.c38
-rw-r--r--src/soc/mediatek/mt8192/Makefile.inc1
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