Timothy Pearson (tpearson@raptorengineeringinc.com) just uploaded a new patch set to gerrit, which you can find at https://review.coreboot.org/12572
-gerrit
commit b8b039f5960016f74075a677f8bf7b47f650b12e Author: Timothy Pearson tpearson@raptorengineeringinc.com Date: Sun Oct 25 18:58:24 2015 -0500
southbridge/amd/sb700: Fix boot hang when AHCI mode disabled
Existence of requested PCI device was not checked when enabling IDE mode on the SP5100. Fix incorrect PCI device ID and check for device existence before attempting setup.
Change-Id: I726c355571b5c67c9a13995be2352601c03ab1e4 Signed-off-by: Timothy Pearson tpearson@raptorengineeringinc.com --- src/southbridge/amd/sb700/early_setup.c | 32 +++++++++++++++++--------------- 1 file changed, 17 insertions(+), 15 deletions(-)
diff --git a/src/southbridge/amd/sb700/early_setup.c b/src/southbridge/amd/sb700/early_setup.c index f7e9120..06c6c77 100644 --- a/src/southbridge/amd/sb700/early_setup.c +++ b/src/southbridge/amd/sb700/early_setup.c @@ -520,26 +520,28 @@ static void sb700_devices_por_init(void) if (!sata_ahci_mode){ #if CONFIG_SOUTHBRIDGE_AMD_SUBTYPE_SP5100 /* SP5100 default SATA mode is RAID5 MODE */ - dev = pci_locate_device(PCI_ID(0x1002, 0x4393), 0); + dev = pci_locate_device(PCI_ID(0x1002, 0x4392), 0);
- /* Set SATA Operation Mode, Set to IDE mode */ - byte = pci_read_config8(dev, 0x40); - byte |= (1 << 0); - pci_write_config8(dev, 0x40, byte); + if (dev != PCI_DEV_INVALID) { + /* Set SATA Operation Mode, Set to IDE mode */ + byte = pci_read_config8(dev, 0x40); + byte |= (1 << 0); + pci_write_config8(dev, 0x40, byte);
- dword = 0x01018f00; - pci_write_config32(dev, 0x8, dword); + dword = 0x01018f00; + pci_write_config32(dev, 0x8, dword);
- /* set SATA Device ID writable */ - dword = pci_read_config32(dev, 0x40); - dword &= ~(1 << 24); - pci_write_config32(dev, 0x40, dword); + /* set SATA Device ID writable */ + dword = pci_read_config32(dev, 0x40); + dword &= ~(1 << 24); + pci_write_config32(dev, 0x40, dword);
- /* set Device ID consistent with IDE emulation mode configuration */ - pci_write_config32(dev, 0x0, 0x43901002); + /* set Device ID consistent with IDE emulation mode configuration */ + pci_write_config32(dev, 0x0, 0x43901002);
- /* rpr v2.13 4.17 Reset CPU on Sync Flood */ - abcfg_reg(0x10050, 1 << 2, 1 << 2); + /* rpr v2.13 4.17 Reset CPU on Sync Flood */ + abcfg_reg(0x10050, 1 << 2, 1 << 2); + } #endif }