diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/soc/intel/common/block/lpc/lpc_def.h | 4 | ||||
| -rw-r--r-- | src/soc/intel/common/block/lpc/lpc_lib.c | 78 |
2 files changed, 82 insertions, 0 deletions
diff --git a/src/soc/intel/common/block/lpc/lpc_def.h b/src/soc/intel/common/block/lpc/lpc_def.h index 47697ca087..b73cc567a8 100644 --- a/src/soc/intel/common/block/lpc/lpc_def.h +++ b/src/soc/intel/common/block/lpc/lpc_def.h @@ -7,6 +7,10 @@ #define LPC_SCNT_EN (1 << 7) #define LPC_SCNT_MODE (1 << 6) #define LPC_IO_DECODE 0x80 +#define LPC_IOD_FDD_RANGE (0 << 12) +#define LPC_IOD_FDD_RANGE_MASK (1 << 12) +#define LPC_IOD_LPT_RANGE (0 << 8) +#define LPC_IOD_LPT_RANGE_MASK (3 << 8) #define LPC_IOD_COMA_RANGE_MASK (7 << 0) #define LPC_IOD_COMB_RANGE_MASK (7 << 4) #define LPC_IOD_COMA_RANGE (0 << 0) /* 0x3F8 - 0x3FF COMA */ diff --git a/src/soc/intel/common/block/lpc/lpc_lib.c b/src/soc/intel/common/block/lpc/lpc_lib.c index cdaeae15c3..99e3749d61 100644 --- a/src/soc/intel/common/block/lpc/lpc_lib.c +++ b/src/soc/intel/common/block/lpc/lpc_lib.c @@ -74,6 +74,84 @@ void lpc_open_pmio_window(uint16_t base, uint16_t size) uint32_t lgir_reg_offset, lgir, window_size, alignment; resource_t bridged_size, bridge_base; + switch (base) { + case 0: + printk(BIOS_ERR, "LPC IO decode base 0!\n"); + return; + case 0x2e: + case 0x2f: + if (size > 2) + break; + printk(BIOS_DEBUG, "LPC: enabling default decode range LPC_IOE_SUPERIO_2E_2F\n"); + pci_or_config16(PCH_DEV_LPC, LPC_IO_ENABLES, LPC_IOE_SUPERIO_2E_2F); + return; + case 0x4e: + case 0x4f: + if (size > 2) + break; + printk(BIOS_DEBUG, "LPC: enabling default decode range LPC_IOE_EC_4E_4F\n"); + pci_or_config16(PCH_DEV_LPC, LPC_IO_ENABLES, LPC_IOE_EC_4E_4F); + return; + case 0x60: + case 0x64: + if (size > 1) + break; + printk(BIOS_DEBUG, "LPC: enabling default decode range LPC_IOE_KBC_60_64\n"); + pci_or_config16(PCH_DEV_LPC, LPC_IO_ENABLES, LPC_IOE_KBC_60_64); + return; + case 0x62: + case 0x66: + if (size > 1) + break; + printk(BIOS_DEBUG, "LPC: enabling default decode range LPC_IOE_EC_62_66\n"); + pci_or_config16(PCH_DEV_LPC, LPC_IO_ENABLES, LPC_IOE_EC_62_66); + return; + case 0x200: + if (size > 8) + break; + printk(BIOS_DEBUG, "LPC: enabling default decode range LPC_IOE_LGE_200\n"); + pci_or_config16(PCH_DEV_LPC, LPC_IO_ENABLES, LPC_IOE_LGE_200); + return; + case 0x208: + if (size > 8) + break; + printk(BIOS_DEBUG, "LPC: enabling default decode range LPC_IOE_HGE_208\n"); + pci_or_config16(PCH_DEV_LPC, LPC_IO_ENABLES, LPC_IOE_HGE_208); + return; + case 0x2f8: /* Don't support secondary ranges */ + if (size > 8) + break; + printk(BIOS_DEBUG, "LPC: enabling default decode range LPC_IOE_COMB_EN\n"); + pci_or_config16(PCH_DEV_LPC, LPC_IO_ENABLES, LPC_IOE_COMB_EN); + pci_update_config16(PCH_DEV_LPC, LPC_IO_DECODE, ~LPC_IOD_COMB_RANGE_MASK, + LPC_IOD_COMB_RANGE); + return; + case 0x378: /* Don't support secondary ranges */ + if (size > 8) + break; + printk(BIOS_DEBUG, "LPC: enabling default decode range LPC_IOE_LPT_EN\n"); + pci_or_config16(PCH_DEV_LPC, LPC_IO_ENABLES, LPC_IOE_HGE_208); + pci_update_config16(PCH_DEV_LPC, LPC_IO_DECODE, ~LPC_IOD_LPT_RANGE_MASK, + LPC_IOD_LPT_RANGE); + return; + case 0x3f0: /* Don't support secondary ranges */ + if (size > 8) + break; + printk(BIOS_DEBUG, "LPC: enabling default decode range LPC_IOE_FDD_EN\n"); + pci_or_config16(PCH_DEV_LPC, LPC_IO_ENABLES, LPC_IOE_FDD_EN); + pci_update_config16(PCH_DEV_LPC, LPC_IO_DECODE, ~LPC_IOD_FDD_RANGE_MASK, + LPC_IOD_FDD_RANGE); + return; + case 0x3f8: /* Don't support secondary ranges */ + if (size > 8) + break; + printk(BIOS_DEBUG, "LPC: enabling default decode range LPC_IOE_COMA_EN\n"); + pci_or_config16(PCH_DEV_LPC, LPC_IO_ENABLES, LPC_IOE_COMA_EN); + pci_update_config16(PCH_DEV_LPC, LPC_IO_DECODE, ~LPC_IOD_COMA_RANGE_MASK, + LPC_IOD_COMA_RANGE); + return; + } + printk(BIOS_SPEW, "LPC: Trying to open IO window from %x size %x\n", base, size); |