diff options
| author | Florian Zumbiehl <florz@florz.de> | 2011-11-22 21:32:31 +0100 |
|---|---|---|
| committer | Marc Jones <marcj303@gmail.com> | 2011-11-22 22:20:30 +0100 |
| commit | 04a8d6239f43c16a2f8f2d0c9893ddecdc3340a6 (patch) | |
| tree | 2ade9b635b022c9fcf4b77e63aa2550c4e89b21c /src/cpu/amd | |
| parent | 2a40ebca9c21c527afd683beeec51a5fa5a77588 (diff) | |
k8 raminit: add workaround for erratum #181 on non-fam-f
Disable DRAM controller on non-fam-f CPUs not using fam-f register layout.
Change-Id: I2cc87857452555011d69bfebe9f9c4c17cef8f6c
Signed-off-by: Florian Zumbiehl <florz@florz.de>
Reviewed-on: http://review.coreboot.org/448
Tested-by: build bot (Jenkins)
Reviewed-by: Marc Jones <marcj303@gmail.com>
Diffstat (limited to 'src/cpu/amd')
| -rw-r--r-- | src/cpu/amd/model_fxx/fidvid.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/src/cpu/amd/model_fxx/fidvid.c b/src/cpu/amd/model_fxx/fidvid.c index 6395a1e1c6..06ff636659 100644 --- a/src/cpu/amd/model_fxx/fidvid.c +++ b/src/cpu/amd/model_fxx/fidvid.c @@ -45,10 +45,19 @@ static void enable_fid_change(void) pci_write_config32(PCI_DEV(0, 0x18 + i, 3), 0xd4, dword); /* disable the DRAM interface at first, it will be enabled - * by raminit again */ + * by raminit again (see also erratum #181) */ +#if CONFIG_K8_REV_F_SUPPORT dword = pci_read_config32(PCI_DEV(0, 0x18 + i, 2), 0x94); dword |= (1 << 14); pci_write_config32(PCI_DEV(0, 0x18 + i, 2), 0x94, dword); +#else + dword = pci_read_config32(PCI_DEV(0, 0x18 + i, 2), 0x90); + dword |= (1 << 24); + pci_write_config32(PCI_DEV(0, 0x18 + i, 2), 0x90, dword); + dword = pci_read_config32(PCI_DEV(0, 0x18 + i, 2), 0x94); + dword |= (1 << 25); + pci_write_config32(PCI_DEV(0, 0x18 + i, 2), 0x94, dword); +#endif dword = 0x23070700; /* enable FID/VID change */ // dword = 0x00070000; /* enable FID/VID change */ |