diff options
Diffstat (limited to 'src/soc/amd/cezanne')
| -rw-r--r-- | src/soc/amd/cezanne/Kconfig | 1 | ||||
| -rw-r--r-- | src/soc/amd/cezanne/Makefile.inc | 1 | ||||
| -rw-r--r-- | src/soc/amd/cezanne/include/soc/smu.h | 26 | ||||
| -rw-r--r-- | src/soc/amd/cezanne/smu.c | 17 |
4 files changed, 45 insertions, 0 deletions
diff --git a/src/soc/amd/cezanne/Kconfig b/src/soc/amd/cezanne/Kconfig index 4a308df527..d491da4df7 100644 --- a/src/soc/amd/cezanne/Kconfig +++ b/src/soc/amd/cezanne/Kconfig @@ -42,6 +42,7 @@ config SOC_SPECIFIC_OPTIONS select SOC_AMD_COMMON_BLOCK_SMBUS select SOC_AMD_COMMON_BLOCK_SMI select SOC_AMD_COMMON_BLOCK_SMM + select SOC_AMD_COMMON_BLOCK_SMU select SOC_AMD_COMMON_BLOCK_SPI select SOC_AMD_COMMON_BLOCK_TSC_FAM17H_19H select SOC_AMD_COMMON_BLOCK_UART diff --git a/src/soc/amd/cezanne/Makefile.inc b/src/soc/amd/cezanne/Makefile.inc index 35e700977e..16b69f36d2 100644 --- a/src/soc/amd/cezanne/Makefile.inc +++ b/src/soc/amd/cezanne/Makefile.inc @@ -37,6 +37,7 @@ ramstage-y += root_complex.c ramstage-y += uart.c smm-y += smihandler.c +smm-y += smu.c smm-$(CONFIG_DEBUG_SMI) += uart.c CPPFLAGS_common += -I$(src)/soc/amd/cezanne/include diff --git a/src/soc/amd/cezanne/include/soc/smu.h b/src/soc/amd/cezanne/include/soc/smu.h new file mode 100644 index 0000000000..560c9e4e5e --- /dev/null +++ b/src/soc/amd/cezanne/include/soc/smu.h @@ -0,0 +1,26 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ + +#ifndef AMD_CEZANNE_SMU_H +#define AMD_CEZANNE_SMU_H + +/* + * SMU mailbox register offsets in indirect address space accessed by an index/data pair in + * D0F00 config space. + */ +#define REG_ADDR_MESG_ID 0x3b10528 +#define REG_ADDR_MESG_RESP 0x3b10564 +#define REG_ADDR_MESG_ARGS_BASE 0x3b10998 + +#define SMU_NUM_ARGS 6 + +enum smu_message_id { + SMC_MSG_S3ENTRY = 0x0b, +}; + +/* + * Request the SMU put system into S3, S4, or S5. On entry, SlpTyp determines S-State and + * SlpTypeEn gets set by the SMU. Function does not return if successful. + */ +void smu_sx_entry(void); + +#endif /* AMD_CEZANNE_SMU_H */ diff --git a/src/soc/amd/cezanne/smu.c b/src/soc/amd/cezanne/smu.c new file mode 100644 index 0000000000..1496957117 --- /dev/null +++ b/src/soc/amd/cezanne/smu.c @@ -0,0 +1,17 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ + +#include <console/console.h> +#include <amdblocks/smu.h> +#include <soc/smu.h> + +/* + * Request the SMU to put system into S3, S4, or S5. On entry, SlpTyp determines S-State and + * SlpTypeEn gets set by the SMU. Function does not return if successful. + */ +void smu_sx_entry(void) +{ + struct smu_payload msg = { 0 }; /* Unused for SMC_MSG_S3ENTRY */ + + printk(BIOS_DEBUG, "SMU: Put system into S3/S4/S5\n"); + send_smu_message(SMC_MSG_S3ENTRY, &msg); +} |