diff options
Diffstat (limited to 'src/southbridge/intel/i82801ix/early_init.c')
| -rw-r--r-- | src/southbridge/intel/i82801ix/early_init.c | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/src/southbridge/intel/i82801ix/early_init.c b/src/southbridge/intel/i82801ix/early_init.c index da124ff54f63..51ce9e859e5c 100644 --- a/src/southbridge/intel/i82801ix/early_init.c +++ b/src/southbridge/intel/i82801ix/early_init.c @@ -17,6 +17,7 @@ #include <arch/io.h> #include <device/pci_ops.h> #include "i82801ix.h" +#include "chip.h" void i82801ix_early_init(void) { @@ -58,3 +59,34 @@ void i82801ix_early_init(void) /* TODO: Check power state bits in GEN_PMCON_2 (D31F0 0xa2) before they get cleared. */ } + +void i82801ix_lpc_decode(void) +{ + const pci_devfn_t d31f0 = PCI_DEV(0, 0x1f, 0); + const struct device *dev = pcidev_on_root(0x1f, 0); + const struct southbridge_intel_i82801ix_config *config = NULL; + + /* Configure serial IRQs.*/ + pci_write_config8(d31f0, D31F0_SERIRQ_CNTL, 0xd0); + /* + * Enable some common LPC IO ranges: + * - 0x2e/0x2f, 0x4e/0x4f often SuperIO + * - 0x60/0x64, 0x62/0x66 often KBC/EC + * - 0x3f0-0x3f5/0x3f7 FDD + * - 0x378-0x37f and 0x778-0x77f LPT + * - 0x2f8-0x2ff COMB + * - 0x3f8-0x3ff COMA + */ + pci_write_config16(d31f0, D31F0_LPC_IODEC, 0x0010); + pci_write_config16(d31f0, D31F0_LPC_EN, 0x3f0f); + + /* Set up generic decode ranges */ + if (!dev || !dev->chip_info) + return; + config = dev->chip_info; + + pci_write_config32(d31f0, D31F0_GEN1_DEC, config->gen1_dec); + pci_write_config32(d31f0, D31F0_GEN2_DEC, config->gen2_dec); + pci_write_config32(d31f0, D31F0_GEN3_DEC, config->gen3_dec); + pci_write_config32(d31f0, D31F0_GEN4_DEC, config->gen4_dec); +} |