diff options
| -rw-r--r-- | src/soc/amd/stoneyridge/include/soc/southbridge.h | 6 | ||||
| -rw-r--r-- | src/soc/amd/stoneyridge/sb_util.c | 45 |
2 files changed, 51 insertions, 0 deletions
diff --git a/src/soc/amd/stoneyridge/include/soc/southbridge.h b/src/soc/amd/stoneyridge/include/soc/southbridge.h index 73e9b6fcd5..9f91b505c7 100644 --- a/src/soc/amd/stoneyridge/include/soc/southbridge.h +++ b/src/soc/amd/stoneyridge/include/soc/southbridge.h @@ -329,6 +329,12 @@ uint32_t smi_read32(uint8_t offset); void smi_write8(uint8_t offset, uint8_t value); void smi_write16(uint8_t offset, uint16_t value); void smi_write32(uint8_t offset, uint32_t value); +uint8_t biosram_read8(uint8_t offset); +void biosram_write8(uint8_t offset, uint8_t value); +uint16_t biosram_read16(uint8_t offset); +void biosram_write16(uint8_t offset, uint16_t value); +uint32_t biosram_read32(uint8_t offset); +void biosram_write32(uint8_t offset, uint32_t value); uint16_t pm_acpi_pm_cnt_blk(void); uint16_t pm_acpi_pm_evt_blk(void); void xhci_pm_write8(uint8_t reg, uint8_t value); diff --git a/src/soc/amd/stoneyridge/sb_util.c b/src/soc/amd/stoneyridge/sb_util.c index e394432d4a..5238506199 100644 --- a/src/soc/amd/stoneyridge/sb_util.c +++ b/src/soc/amd/stoneyridge/sb_util.c @@ -76,6 +76,51 @@ void smi_write8(uint8_t offset, uint8_t value) write8((void *)(APU_SMI_BASE + offset), value); } +uint8_t biosram_read8(uint8_t offset) +{ + outb(offset, BIOSRAM_INDEX); + return inb(BIOSRAM_DATA); +} + +void biosram_write8(uint8_t offset, uint8_t value) +{ + outb(offset, BIOSRAM_INDEX); + outb(value, BIOSRAM_DATA); +} + +uint16_t biosram_read16(uint8_t offset) +{ + int i; + uint16_t value = 0; + for (i = sizeof(value) - 1 ; i >= 0 ; i--) + value = (value << 8) | biosram_read8(offset + i); + return value; +} + +uint32_t biosram_read32(uint8_t offset) +{ + uint32_t value = biosram_read16(offset + sizeof(uint16_t)) << 16; + return value | biosram_read16(offset); +} + +void biosram_write16(uint8_t offset, uint16_t value) +{ + int i; + for (i = 0 ; i < sizeof(value) ; i++) { + biosram_write8(offset + i, value & 0xff); + value >>= 8; + } +} + +void biosram_write32(uint8_t offset, uint32_t value) +{ + int i; + for (i = 0 ; i < sizeof(value) ; i++) { + biosram_write8(offset + i, value & 0xff); + value >>= 8; + } +} + uint16_t pm_acpi_pm_cnt_blk(void) { return pm_read16(PM1_CNT_BLK); |