diff options
| author | Rex-BC Chen <rex-bc.chen@mediatek.com> | 2022-10-17 20:49:08 +0800 |
|---|---|---|
| committer | Felix Held <felix-coreboot@felixheld.de> | 2022-10-21 14:52:17 +0000 |
| commit | 6ad80f1b81d08e6c1400eaceb710887371254894 (patch) | |
| tree | d037d3fefba22846355256d66ada6361b858336c /src | |
| parent | e8df32775d89aefeb4c7ec48cf0b97a262f9d9ac (diff) | |
soc/mediatek/mt8186: Add support for reading CPU ID
MT8186 has two slightly different versions: MT8186G and MT8186T
(turbo version). Add get_cpu_id() to identify different CPUs.
BUG=b:249436110
TEST=cpu id is correct.
BRANCH=corsola
Signed-off-by: Bo-Chen Chen <rex-bc.chen@mediatek.com>
Change-Id: I0612dd589e11853dbddc1d99526e9c9bf170acec
Reviewed-on: https://review.coreboot.org/c/coreboot/+/68576
Reviewed-by: Yu-Ping Wu <yupingso@google.com>
Reviewed-by: Yidi Lin <yidilin@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Diffstat (limited to 'src')
| -rw-r--r-- | src/soc/mediatek/common/cpu_id.c | 15 | ||||
| -rw-r--r-- | src/soc/mediatek/common/include/soc/cpu_id.h | 11 | ||||
| -rw-r--r-- | src/soc/mediatek/mt8186/Makefile.inc | 1 | ||||
| -rw-r--r-- | src/soc/mediatek/mt8186/include/soc/efuse.h | 3 |
4 files changed, 30 insertions, 0 deletions
diff --git a/src/soc/mediatek/common/cpu_id.c b/src/soc/mediatek/common/cpu_id.c new file mode 100644 index 0000000000..e31adcdf3f --- /dev/null +++ b/src/soc/mediatek/common/cpu_id.c @@ -0,0 +1,15 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ + +#include <console/console.h> +#include <device/mmio.h> +#include <soc/cpu_id.h> +#include <soc/efuse.h> + +u32 get_cpu_id(void) +{ + u32 id = read32(&mtk_efuse->cpu_id_reg); + + printk(BIOS_INFO, "CPU: %#x\n", id); + + return id; +} diff --git a/src/soc/mediatek/common/include/soc/cpu_id.h b/src/soc/mediatek/common/include/soc/cpu_id.h new file mode 100644 index 0000000000..9453a15864 --- /dev/null +++ b/src/soc/mediatek/common/include/soc/cpu_id.h @@ -0,0 +1,11 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ + +#ifndef SOC_MEDIATEK_COMMON_CPU_ID_H +#define SOC_MEDIATEK_COMMON_CPU_ID_H + +#define MTK_CPU_ID_MT8186G 0x81861001 +#define MTK_CPU_ID_MT8186T 0x81862001 + +u32 get_cpu_id(void); + +#endif /* SOC_MEDIATEK_COMMON_CPU_ID_H */ diff --git a/src/soc/mediatek/mt8186/Makefile.inc b/src/soc/mediatek/mt8186/Makefile.inc index cd207773ac..c8dbbc9593 100644 --- a/src/soc/mediatek/mt8186/Makefile.inc +++ b/src/soc/mediatek/mt8186/Makefile.inc @@ -1,6 +1,7 @@ ifeq ($(CONFIG_SOC_MEDIATEK_MT8186),y) # for bootblock, verstage, romstage, ramstage +all-y += ../common/cpu_id.c all-y += ../common/flash_controller.c all-y += ../common/gpio.c ../common/gpio_op.c gpio.c all-y += ../common/i2c.c i2c.c diff --git a/src/soc/mediatek/mt8186/include/soc/efuse.h b/src/soc/mediatek/mt8186/include/soc/efuse.h index fe3dfff9aa..3804b464d8 100644 --- a/src/soc/mediatek/mt8186/include/soc/efuse.h +++ b/src/soc/mediatek/mt8186/include/soc/efuse.h @@ -9,9 +9,12 @@ struct efuse_regs { uint32_t reserved[130]; uint32_t adc_cali_reg; + uint32_t reserved1[357]; + uint32_t cpu_id_reg; }; check_member(efuse_regs, adc_cali_reg, 0x208); +check_member(efuse_regs, cpu_id_reg, 0x7a0); static struct efuse_regs *const mtk_efuse = (void *)EFUSEC_BASE; #endif |