diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/soc/amd/common/block/include/amdblocks/psp.h | 2 | ||||
| -rw-r--r-- | src/soc/amd/common/block/psp/psp.c | 23 | ||||
| -rw-r--r-- | src/soc/amd/common/block/psp/psp_def.h | 4 | ||||
| -rw-r--r-- | src/soc/amd/common/block/psp/psp_gen1.c | 23 |
4 files changed, 27 insertions, 25 deletions
diff --git a/src/soc/amd/common/block/include/amdblocks/psp.h b/src/soc/amd/common/block/include/amdblocks/psp.h index e749d75df1..c9986cae00 100644 --- a/src/soc/amd/common/block/include/amdblocks/psp.h +++ b/src/soc/amd/common/block/include/amdblocks/psp.h @@ -51,6 +51,8 @@ void soc_fill_smm_reg_info(struct smm_register_info *reg); /* v2 only */ #define PSPSTS_INVALID_NAME 8 #define PSPSTS_INVALID_BLOB 9 +/* PSP gen1-only. SoCs with PSP gen2 already have the DRAM initialized when + the x86 cores are released from reset. */ int psp_notify_dram(void); int psp_notify_smm(void); diff --git a/src/soc/amd/common/block/psp/psp.c b/src/soc/amd/common/block/psp/psp.c index b95545923f..66f7d59224 100644 --- a/src/soc/amd/common/block/psp/psp.c +++ b/src/soc/amd/common/block/psp/psp.c @@ -56,29 +56,6 @@ void psp_print_cmd_status(int cmd_status, struct mbox_buffer_header *header) } /* - * Notify the PSP that DRAM is present. Upon receiving this command, the PSP - * will load its OS into fenced DRAM that is not accessible to the x86 cores. - */ -int psp_notify_dram(void) -{ - int cmd_status; - struct mbox_default_buffer buffer = { - .header = { - .size = sizeof(buffer) - } - }; - - printk(BIOS_DEBUG, "PSP: Notify that DRAM is available... "); - - cmd_status = send_psp_command(MBOX_BIOS_CMD_DRAM_INFO, &buffer); - - /* buffer's status shouldn't change but report it if it does */ - psp_print_cmd_status(cmd_status, &buffer.header); - - return cmd_status; -} - -/* * Notify the PSP that the system is completing the boot process. Upon * receiving this command, the PSP will only honor commands where the buffer * is in SMM space. diff --git a/src/soc/amd/common/block/psp/psp_def.h b/src/soc/amd/common/block/psp/psp_def.h index 4d3aca59b3..5baa0642dc 100644 --- a/src/soc/amd/common/block/psp/psp_def.h +++ b/src/soc/amd/common/block/psp/psp_def.h @@ -8,7 +8,6 @@ #include <amdblocks/psp.h> /* x86 to PSP commands */ -#define MBOX_BIOS_CMD_DRAM_INFO 0x01 #define MBOX_BIOS_CMD_SMM_INFO 0x02 #define MBOX_BIOS_CMD_SX_INFO 0x03 #define MBOX_BIOS_CMD_SX_INFO_SLEEP_TYPE_MAX 0x07 @@ -19,7 +18,8 @@ #define MBOX_BIOS_CMD_S3_DATA_INFO 0x08 #define MBOX_BIOS_CMD_NOP 0x09 #define MBOX_BIOS_CMD_ABORT 0xfe -/* x86 to PSP commands, v1 */ +/* x86 to PSP commands, v1-only */ +#define MBOX_BIOS_CMD_DRAM_INFO 0x01 #define MBOX_BIOS_CMD_SMU_FW 0x19 #define MBOX_BIOS_CMD_SMU_FW2 0x1a diff --git a/src/soc/amd/common/block/psp/psp_gen1.c b/src/soc/amd/common/block/psp/psp_gen1.c index 55070f258d..37257ba92e 100644 --- a/src/soc/amd/common/block/psp/psp_gen1.c +++ b/src/soc/amd/common/block/psp/psp_gen1.c @@ -170,3 +170,26 @@ int psp_load_named_blob(enum psp_blob_type type, const char *name) cbfs_unmap(blob); return cmd_status; } + +/* + * Notify the PSP that DRAM is present. Upon receiving this command, the PSP + * will load its OS into fenced DRAM that is not accessible to the x86 cores. + */ +int psp_notify_dram(void) +{ + int cmd_status; + struct mbox_default_buffer buffer = { + .header = { + .size = sizeof(buffer) + } + }; + + printk(BIOS_DEBUG, "PSP: Notify that DRAM is available... "); + + cmd_status = send_psp_command(MBOX_BIOS_CMD_DRAM_INFO, &buffer); + + /* buffer's status shouldn't change but report it if it does */ + psp_print_cmd_status(cmd_status, &buffer.header); + + return cmd_status; +} |