diff options
Diffstat (limited to 'src/northbridge/amd/amdfam10/misc_control.c')
| -rw-r--r-- | src/northbridge/amd/amdfam10/misc_control.c | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/src/northbridge/amd/amdfam10/misc_control.c b/src/northbridge/amd/amdfam10/misc_control.c index d6f9fd9437..de9f34233f 100644 --- a/src/northbridge/amd/amdfam10/misc_control.c +++ b/src/northbridge/amd/amdfam10/misc_control.c @@ -30,6 +30,7 @@ #include <device/pci_ops.h> #include <pc80/mc146818rtc.h> #include <lib.h> +#include <cbmem.h> #include <cpu/amd/model_10xxx_rev.h> #include "amdfam10.h" @@ -152,6 +153,51 @@ static void misc_control_init(struct device *dev) printk(BIOS_DEBUG, "NB: Function 3 Misc Control.. "); +#if IS_ENABLED(CONFIG_DIMM_DDR3) && !IS_ENABLED(CONFIG_NORTHBRIDGE_AMD_AGESA) + uint8_t node; + uint8_t slot; + uint8_t dimm_present; + + /* Restore DRAM MCA registers */ + struct amdmct_memory_info *mem_info; + mem_info = cbmem_find(CBMEM_ID_AMDMCT_MEMINFO); + if (mem_info) { + node = PCI_SLOT(dev->path.pci.devfn) - 0x18; + + /* Check node for installed DIMMs */ + dimm_present = 0; + + /* Check all slots for installed DIMMs */ + for (slot = 0; slot < MAX_DIMMS_SUPPORTED; slot++) { + if (mem_info->dct_stat[node].DIMMPresent & (1 << slot)) { + dimm_present = 1; + break; + } + } + + if (dimm_present) { + uint32_t mc4_status_high = pci_read_config32(dev, 0x4c); + uint32_t mc4_status_low = pci_read_config32(dev, 0x48); + if (mc4_status_high != 0) { + printk(BIOS_WARNING, "\nWARNING: MC4 Machine Check Exception detected on node %d!\n" + "Signature: %08x%08x\n", node, mc4_status_high, mc4_status_low); + } + + /* Clear MC4 error status */ + pci_write_config32(dev, 0x48, 0x0); + pci_write_config32(dev, 0x4c, 0x0); + + if (mem_info->dct_stat[node].mca_config_backed_up) { + dword = pci_read_config32(dev, 0x44); + dword |= (mem_info->dct_stat[node].sync_flood_on_dram_err & 0x1) << 30; + dword |= (mem_info->dct_stat[node].sync_flood_on_any_uc_err & 0x1) << 21; + dword |= (mem_info->dct_stat[node].sync_flood_on_uc_dram_ecc_err & 0x1) << 2; + pci_write_config32(dev, 0x44, dword); + } + } + } +#endif + /* Disable Machine checks from Invalid Locations. * This is needed for PC backwards compatibility. */ |