diff options
Diffstat (limited to 'src/southbridge')
| -rw-r--r-- | src/southbridge/amd/sb700/sata.c | 42 |
1 files changed, 38 insertions, 4 deletions
diff --git a/src/southbridge/amd/sb700/sata.c b/src/southbridge/amd/sb700/sata.c index a59708f912..8ccc7b613c 100644 --- a/src/southbridge/amd/sb700/sata.c +++ b/src/southbridge/amd/sb700/sata.c @@ -122,6 +122,8 @@ static void sata_init(struct device *dev) uint8_t port_count; uint8_t max_port_count; uint8_t hba_reset_count; + uint8_t ide_io_enabled; + uint8_t ide_legacy_io_enabled; sata_ahci_mode = 0; if (get_option(&nvram, "sata_ahci_mode") == CB_SUCCESS) @@ -166,15 +168,27 @@ retry_init: } } - /* Disable combined mode */ + /* Enable combined mode */ byte = pci_read_config8(sm_dev, 0xad); - byte &= ~(1 << 3); + byte |= (1 << 3); pci_write_config8(sm_dev, 0xad, byte); device_t ide_dev; /* IDE Device */ ide_dev = dev_find_slot(0, PCI_DEVFN(0x14, 1)); + /* Disable legacy IDE mode (enable PATA_BAR0/2) */ + byte = pci_read_config8(ide_dev, 0x09); + ide_legacy_io_enabled = !(byte & 0x1); + byte |= 0x1; + pci_write_config8(ide_dev, 0x09, byte); + + /* Enable IDE I/O access (enable PATA_BAR0/2) */ + byte = pci_read_config8(ide_dev, 0x04); + ide_io_enabled = byte & 0x1; + byte |= 0x1; + pci_write_config8(ide_dev, 0x04, byte); + /* RPR 7.2 SATA Initialization */ /* Set the interrupt Mapping to INTG# */ byte = pci_read_config8(sm_dev, 0xaf); @@ -421,7 +435,8 @@ retry_init: /* Disable SATA controller */ byte = pci_read_config8(sm_dev, 0xad); - byte &= ~(0x1); + byte &= ~(1 << 0); + byte &= ~(1 << 3); pci_write_config8(sm_dev, 0xad, byte); mdelay(100); @@ -456,8 +471,27 @@ retry_init: } } + /* Restore IDE I/O access */ + if (!ide_io_enabled) { + byte = pci_read_config8(ide_dev, 0x04); + byte &= ~0x1; + pci_write_config8(ide_dev, 0x04, byte); + } + + /* Re-enable legacy IDE mode */ + if (ide_legacy_io_enabled) { + byte = pci_read_config8(ide_dev, 0x09); + byte &= ~0x1; + pci_write_config8(ide_dev, 0x09, byte); + } + /* Below is CIM InitSataLateFar */ - if (!sata_ahci_mode) { + if (sata_ahci_mode) { + /* Disable combined mode */ + byte = pci_read_config8(sm_dev, 0xad); + byte &= ~(1 << 3); + pci_write_config8(sm_dev, 0xad, byte); + } else { /* Enable interrupts from the HBA */ byte = read8(sata_bar5 + 0x4); byte |= 1 << 1; |