diff options
Diffstat (limited to 'src/soc/amd/common/block')
| -rw-r--r-- | src/soc/amd/common/block/acpimmio/biosram.c | 11 | ||||
| -rw-r--r-- | src/soc/amd/common/block/include/amdblocks/biosram.h | 5 |
2 files changed, 16 insertions, 0 deletions
diff --git a/src/soc/amd/common/block/acpimmio/biosram.c b/src/soc/amd/common/block/acpimmio/biosram.c index f0a1257fb9..e33f02d02c 100644 --- a/src/soc/amd/common/block/acpimmio/biosram.c +++ b/src/soc/amd/common/block/acpimmio/biosram.c @@ -15,6 +15,17 @@ #include <amdblocks/acpimmio.h> #include <amdblocks/biosram.h> +void *get_ap_entry_ptr(void) +{ + return (void *)biosram_read32(BIOSRAM_AP_ENTRY); +} + +void set_ap_entry_ptr(void *entry) +{ + biosram_write32(BIOSRAM_AP_ENTRY, (uintptr_t)entry); +} + + void backup_top_of_low_cacheable(uintptr_t ramtop) { biosram_write32(BIOSRAM_CBMEM_TOP, ramtop); diff --git a/src/soc/amd/common/block/include/amdblocks/biosram.h b/src/soc/amd/common/block/include/amdblocks/biosram.h index e2c1eb33f7..db283100d5 100644 --- a/src/soc/amd/common/block/include/amdblocks/biosram.h +++ b/src/soc/amd/common/block/include/amdblocks/biosram.h @@ -17,10 +17,15 @@ #include <stdint.h> /* BiosRam Ranges at 0xfed80500 or I/O 0xcd4/0xcd5 */ +#define BIOSRAM_AP_ENTRY 0xe8 /* 8 bytes */ #define BIOSRAM_CBMEM_TOP 0xf0 /* 4 bytes */ #define BIOSRAM_UMA_SIZE 0xf4 /* 4 bytes */ #define BIOSRAM_UMA_BASE 0xf8 /* 8 bytes */ +/* Returns the bootblock C entry point for APs */ +void *get_ap_entry_ptr(void); +/* Used by BSP to store the bootblock entry point for APs */ +void set_ap_entry_ptr(void *entry); /* Saves the UMA size returned by AGESA */ void save_uma_size(uint32_t size); /* Saves the UMA base address returned by AGESA */ |