diff options
Diffstat (limited to 'src/northbridge/amd/amdmct/mct_ddr3/mctecc_d.c')
| -rw-r--r-- | src/northbridge/amd/amdmct/mct_ddr3/mctecc_d.c | 34 |
1 files changed, 24 insertions, 10 deletions
diff --git a/src/northbridge/amd/amdmct/mct_ddr3/mctecc_d.c b/src/northbridge/amd/amdmct/mct_ddr3/mctecc_d.c index 2ebd09324b..07eb0bd269 100644 --- a/src/northbridge/amd/amdmct/mct_ddr3/mctecc_d.c +++ b/src/northbridge/amd/amdmct/mct_ddr3/mctecc_d.c @@ -250,16 +250,30 @@ u8 ECCInit_D(struct MCTStatStruc *pMCTstat, struct DCTStatStruc *pDCTstatA) pDCTstat = pDCTstatA + Node; if (NodePresent_D(Node)) { - /* Clear MC4 error status */ - pci_write_config32(pDCTstat->dev_nbmisc, 0x48, 0x0); - pci_write_config32(pDCTstat->dev_nbmisc, 0x4c, 0x0); - - /* Restore previous MCA error handling settings */ - if (pDCTstat->mca_config_backed_up) { - dword = Get_NB32(pDCTstat->dev_nbmisc, 0x44); - dword |= (pDCTstat->sync_flood_on_dram_err & 0x1) << 30; - dword |= (pDCTstat->sync_flood_on_any_uc_err & 0x1) << 21; - Set_NB32(pDCTstat->dev_nbmisc, 0x44, dword); + dev = pDCTstat->dev_map; + reg = 0x40 + (Node << 3); /* Dram Base Node 0 + index */ + val = Get_NB32(dev, reg); + + /* WE/RE is checked */ + if ((val & 0x3) == 0x3) { /* Node has dram populated */ + uint32_t mc4_status_high = pci_read_config32(pDCTstat->dev_nbmisc, 0x4c); + uint32_t mc4_status_low = pci_read_config32(pDCTstat->dev_nbmisc, 0x48); + if (mc4_status_high != 0) { + printk(BIOS_WARNING, "WARNING: MC4 Machine Check Exception detected!\n" + "Signature: %08x%08x\n", mc4_status_high, mc4_status_low); + } + + /* Clear MC4 error status */ + pci_write_config32(pDCTstat->dev_nbmisc, 0x48, 0x0); + pci_write_config32(pDCTstat->dev_nbmisc, 0x4c, 0x0); + + /* Restore previous MCA error handling settings */ + if (pDCTstat->mca_config_backed_up) { + dword = Get_NB32(pDCTstat->dev_nbmisc, 0x44); + dword |= (pDCTstat->sync_flood_on_dram_err & 0x1) << 30; + dword |= (pDCTstat->sync_flood_on_any_uc_err & 0x1) << 21; + Set_NB32(pDCTstat->dev_nbmisc, 0x44, dword); + } } } } |