diff options
Diffstat (limited to 'src/southbridge/amd/sb700')
| -rw-r--r-- | src/southbridge/amd/sb700/sata.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/src/southbridge/amd/sb700/sata.c b/src/southbridge/amd/sb700/sata.c index fdf32c780e..c61fa01953 100644 --- a/src/southbridge/amd/sb700/sata.c +++ b/src/southbridge/amd/sb700/sata.c @@ -104,6 +104,7 @@ static void sata_init(struct device *dev) int i, j; uint8_t nvram; uint8_t sata_ahci_mode; + uint8_t sata_alpm_enable; uint8_t port_count; uint8_t max_port_count; @@ -111,6 +112,10 @@ static void sata_init(struct device *dev) if (get_option(&nvram, "sata_ahci_mode") == CB_SUCCESS) sata_ahci_mode = !!nvram; + sata_alpm_enable = 0; + if (get_option(&nvram, "sata_alpm") == CB_SUCCESS) + sata_alpm_enable = !!nvram; + device_t sm_dev; /* SATA SMBus Disable */ sm_dev = dev_find_slot(0, PCI_DEVFN(0x14, 0)); @@ -229,6 +234,13 @@ static void sata_init(struct device *dev) dword &= ~(0x1 << i); write32(sata_bar5 + 0x0c, dword); + /* Disable ALPM if ALPM support not requested */ + if (!sata_alpm_enable) { + dword = read32(sata_bar5 + 0xfc); + dword &= ~(0x1 << 11); /* Disable ALPM */ + write32(sata_bar5 + 0xfc, dword); + } + /* Write protect Sub-Class Code */ byte = pci_read_config8(dev, 0x40); byte &= ~(1 << 0); |