diff options
Diffstat (limited to 'src/soc/amd')
| -rw-r--r-- | src/soc/amd/common/block/include/amdblocks/lpc.h | 11 | ||||
| -rw-r--r-- | src/soc/amd/common/block/lpc/lpc_util.c | 18 | ||||
| -rw-r--r-- | src/soc/amd/picasso/southbridge.c | 4 | ||||
| -rw-r--r-- | src/soc/amd/stoneyridge/southbridge.c | 4 |
4 files changed, 30 insertions, 7 deletions
diff --git a/src/soc/amd/common/block/include/amdblocks/lpc.h b/src/soc/amd/common/block/include/amdblocks/lpc.h index d7a455a681..00210a7fe1 100644 --- a/src/soc/amd/common/block/include/amdblocks/lpc.h +++ b/src/soc/amd/common/block/include/amdblocks/lpc.h @@ -179,6 +179,15 @@ int lpc_find_wideio_range(uint16_t start, uint16_t size); int lpc_set_wideio_range(uint16_t start, uint16_t size); uintptr_t lpc_get_spibase(void); -void lpc_set_spibase(uint32_t base, uint32_t enable); + +/* + * Sets MMIO base address for SPI controller and eSPI controller (if supported by platform). + * + * eSPI base = SPI base + 0x10000 + */ +void lpc_set_spibase(uint32_t base); + +/* Enable SPI ROM (SPI_ROM_ENABLE, SPI_ROM_ALT_ENABLE) */ +void lpc_enable_spi_rom(uint32_t enable); #endif /* __AMDBLOCKS_LPC_H__ */ diff --git a/src/soc/amd/common/block/lpc/lpc_util.c b/src/soc/amd/common/block/lpc/lpc_util.c index 97ef17c612..c9786e7aa2 100644 --- a/src/soc/amd/common/block/lpc/lpc_util.c +++ b/src/soc/amd/common/block/lpc/lpc_util.c @@ -322,19 +322,29 @@ uintptr_t lpc_get_spibase(void) return (uintptr_t)base; } -void lpc_set_spibase(u32 base, u32 enable) +void lpc_set_spibase(uint32_t base) { - u32 reg32; + uint32_t reg32; + + reg32 = pci_read_config32(_LPCB_DEV, SPIROM_BASE_ADDRESS_REGISTER); + + reg32 &= SPI_BASE_ALIGNMENT - 1; /* preserve only reserved, enables */ + reg32 |= ALIGN_DOWN(base, SPI_BASE_ALIGNMENT); + + pci_write_config32(_LPCB_DEV, SPIROM_BASE_ADDRESS_REGISTER, reg32); +} + +void lpc_enable_spi_rom(uint32_t enable) +{ + uint32_t reg32; /* only two types of CS# enables are allowed */ enable &= SPI_ROM_ENABLE | SPI_ROM_ALT_ENABLE; reg32 = pci_read_config32(_LPCB_DEV, SPIROM_BASE_ADDRESS_REGISTER); - reg32 &= SPI_BASE_ALIGNMENT - 1; /* preserve only reserved, enables */ reg32 &= ~(SPI_ROM_ENABLE | SPI_ROM_ALT_ENABLE); reg32 |= enable; - reg32 |= ALIGN_DOWN(base, SPI_BASE_ALIGNMENT); pci_write_config32(_LPCB_DEV, SPIROM_BASE_ADDRESS_REGISTER, reg32); } diff --git a/src/soc/amd/picasso/southbridge.c b/src/soc/amd/picasso/southbridge.c index 73ab03b643..6308953fc6 100644 --- a/src/soc/amd/picasso/southbridge.c +++ b/src/soc/amd/picasso/southbridge.c @@ -207,7 +207,9 @@ static uintptr_t sb_init_spi_base(void) if (base) return base; - lpc_set_spibase(SPI_BASE_ADDRESS, SPI_ROM_ENABLE); + lpc_set_spibase(SPI_BASE_ADDRESS); + lpc_enable_spi_rom(SPI_ROM_ENABLE); + return SPI_BASE_ADDRESS; } diff --git a/src/soc/amd/stoneyridge/southbridge.c b/src/soc/amd/stoneyridge/southbridge.c index ccdedf4bbe..e90fe1b457 100644 --- a/src/soc/amd/stoneyridge/southbridge.c +++ b/src/soc/amd/stoneyridge/southbridge.c @@ -265,7 +265,9 @@ static uintptr_t sb_init_spi_base(void) if (base) return base; - lpc_set_spibase(SPI_BASE_ADDRESS, SPI_ROM_ENABLE); + lpc_set_spibase(SPI_BASE_ADDRESS); + lpc_enable_spi_rom(SPI_ROM_ENABLE); + return SPI_BASE_ADDRESS; } |