Florian Zumbiehl just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/448
-gerrit
commit 5b687b2c7ab6c1ca9647e9e714f87a619029777f Author: Florian Zumbiehl florz@florz.de Date: Tue Nov 22 21:32:31 2011 +0100
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 --- 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 6395a1e..06ff636 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 */