diff options
| -rw-r--r-- | src/northbridge/intel/sandybridge/raminit.c | 31 | ||||
| -rw-r--r-- | src/northbridge/intel/sandybridge/raminit_native.c | 3 |
2 files changed, 31 insertions, 3 deletions
diff --git a/src/northbridge/intel/sandybridge/raminit.c b/src/northbridge/intel/sandybridge/raminit.c index 2728037ac9..06b4d1ec45 100644 --- a/src/northbridge/intel/sandybridge/raminit.c +++ b/src/northbridge/intel/sandybridge/raminit.c @@ -416,10 +416,41 @@ static void init_dram_ddr3(int s3resume, const u32 cpuid) set_scrambling_seed(&ctrl); + if (!s3resume && ctrl.ecc_enabled) + channel_scrub(&ctrl); + set_normal_operation(&ctrl); final_registers(&ctrl); + /* can't do this earlier because it needs to be done in normal operation */ + if (CONFIG(DEBUG_RAM_SETUP) && !s3resume && ctrl.ecc_enabled) { + uint32_t i, tseg = pci_read_config32(HOST_BRIDGE, TSEGMB); + + printk(BIOS_INFO, "RAMINIT: ECC scrub test on first channel up to 0x%x\n", + tseg); + + /* + * This test helps to debug the ECC scrubbing. + * It likely tests every channel/rank, as rank interleave and enhanced + * interleave are enabled, but there's no guarantee for it. + */ + + /* Skip first MB to avoid special case for A-seg and test up to TSEG */ + for (i = 1; i < tseg >> 20; i++) { + for (int j = 0; j < 1 * MiB; j += 4096) { + uintptr_t addr = i * MiB + j; + if (read32((u32 *)addr) == 0) + continue; + + printk(BIOS_ERR, "RAMINIT: ECC scrub: DRAM not cleared at" + " addr 0x%lx\n", addr); + break; + } + } + printk(BIOS_INFO, "RAMINIT: ECC scrub test done.\n"); + } + /* Zone config */ dram_zones(&ctrl, 0); diff --git a/src/northbridge/intel/sandybridge/raminit_native.c b/src/northbridge/intel/sandybridge/raminit_native.c index 62715a1c23..c23a5acff0 100644 --- a/src/northbridge/intel/sandybridge/raminit_native.c +++ b/src/northbridge/intel/sandybridge/raminit_native.c @@ -687,9 +687,6 @@ int try_init_dram_ddr3(ramctr_timing *ctrl, int fast_boot, int s3resume, int me_ err = channel_test(ctrl); if (err) return err; - - if (ctrl->ecc_enabled) - channel_scrub(ctrl); } /* Set MAD-DIMM registers */ |