diff options
| -rw-r--r-- | src/soc/amd/common/block/include/amdblocks/lpc.h | 4 | ||||
| -rw-r--r-- | src/soc/amd/common/block/lpc/lpc_util.c | 12 |
2 files changed, 16 insertions, 0 deletions
diff --git a/src/soc/amd/common/block/include/amdblocks/lpc.h b/src/soc/amd/common/block/include/amdblocks/lpc.h index 11880eb3e6..2874c18879 100644 --- a/src/soc/amd/common/block/include/amdblocks/lpc.h +++ b/src/soc/amd/common/block/include/amdblocks/lpc.h @@ -75,6 +75,8 @@ #define LPC_WIDEIO0_ENABLE BIT(2) #define DECODE_ALTERNATE_SIO_ENABLE BIT(1) #define DECODE_SIO_ENABLE BIT(0) +#define LPC_SELECT_SIO_4E4F 1 +#define LPC_SELECT_SIO_2E2F 0 #define WIDEIO_RANGE_ERROR -1 /* Assuming word access to higher word (register 0x4a) */ @@ -151,6 +153,8 @@ void soc_late_lpc_bridge_enable(void); void lpc_enable_port80(void); void lpc_enable_pci_port80(void); void lpc_enable_decode(uint32_t decodes); +/* addr = index/data to enable: LPC_SELECT_SIO_2E2F or LPC_SELECT_SIO_4E4F */ +void lpc_enable_sio_decode(const bool addr); uintptr_t lpc_spibase(void); void lpc_tpm_decode(void); void lpc_tpm_decode_spi(void); diff --git a/src/soc/amd/common/block/lpc/lpc_util.c b/src/soc/amd/common/block/lpc/lpc_util.c index 1d46acbf5c..cdf36b2988 100644 --- a/src/soc/amd/common/block/lpc/lpc_util.c +++ b/src/soc/amd/common/block/lpc/lpc_util.c @@ -165,6 +165,18 @@ void lpc_enable_pci_port80(void) pci_write_config8(_LPCB_DEV, LPC_IO_OR_MEM_DEC_EN_HIGH, byte); } +void lpc_enable_sio_decode(const bool addr) +{ + uint32_t decodes; + uint32_t enable; + + decodes = pci_read_config32(_LPCB_DEV, LPC_IO_OR_MEM_DECODE_ENABLE); + enable = addr == LPC_SELECT_SIO_2E2F ? + DECODE_SIO_ENABLE : DECODE_ALTERNATE_SIO_ENABLE; + decodes |= enable; + pci_write_config32(_LPCB_DEV, LPC_IO_OR_MEM_DECODE_ENABLE, decodes); +} + void lpc_enable_decode(uint32_t decodes) { pci_write_config32(_LPCB_DEV, LPC_IO_PORT_DECODE_ENABLE, decodes); |