Patch set updated for coreboot: northbridge/amd/amdmct: Clear memory before enabling ECC
Timothy Pearson (tpearson@raptorengineeringinc.com) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/11996
-gerrit
commit b61f3197515d88c46b04b6e5619c505482cb781e Author: Timothy Pearson tpearson@raptorengineeringinc.com Date: Sat Jun 20 20:02:49 2015 -0500
northbridge/amd/amdmct: Clear memory before enabling ECC
Change-Id: I992e7040520570893ba6a213138dd57bfa14733b Signed-off-by: Timothy Pearson tpearson@raptorengineeringinc.com --- src/northbridge/amd/amdmct/mct_ddr3/mct_d.c | 38 ++++++-------------------- src/northbridge/amd/amdmct/mct_ddr3/mctecc_d.c | 38 +++++++++++++++++++++++++- 2 files changed, 46 insertions(+), 30 deletions(-)
diff --git a/src/northbridge/amd/amdmct/mct_ddr3/mct_d.c b/src/northbridge/amd/amdmct/mct_ddr3/mct_d.c index 4bfb08a..f696dae 100644 --- a/src/northbridge/amd/amdmct/mct_ddr3/mct_d.c +++ b/src/northbridge/amd/amdmct/mct_ddr3/mct_d.c @@ -47,8 +47,6 @@ static void DCTMemClr_Init_D(struct MCTStatStruc *pMCTstat, struct DCTStatStruc *pDCTstat); static void DCTMemClr_Sync_D(struct MCTStatStruc *pMCTstat, struct DCTStatStruc *pDCTstat); -static void MCTMemClrSync_D(struct MCTStatStruc *pMCTstat, - struct DCTStatStruc *pDCTstatA); static u8 NodePresent_D(u8 Node); static void SyncDCTsReady_D(struct MCTStatStruc *pMCTstat, struct DCTStatStruc *pDCTstatA); @@ -1507,10 +1505,11 @@ restartinit: InterleaveChannels_D(pMCTstat, pDCTstatA);
printk(BIOS_DEBUG, "mctAutoInitMCT_D: ECCInit_D\n"); - if (ECCInit_D(pMCTstat, pDCTstatA)) { /* Setup ECC control and ECC check-bits*/ - printk(BIOS_DEBUG, "mctAutoInitMCT_D: MCTMemClr_D\n"); - MCTMemClr_D(pMCTstat,pDCTstatA); - } + ECCInit_D(pMCTstat, pDCTstatA); /* Setup ECC control and ECC check-bits*/ + + /* mctDoWarmResetMemClr_D(); */ + printk(BIOS_DEBUG, "mctAutoInitMCT_D: MCTMemClr_D\n"); + MCTMemClr_D(pMCTstat,pDCTstatA);
printk(BIOS_DEBUG, "mctAutoInitMCT_D: mct_ForceNBPState0_Dis_Fam15\n"); for (Node = 0; Node < MAX_NODES_SUPPORTED; Node++) { @@ -2102,9 +2101,6 @@ static void DQSTiming_D(struct MCTStatStruc *pMCTstat,
/* FIXME - currently uses calculated value TrainMaxReadLatency_D(pMCTstat, pDCTstatA); */ mctHookAfterAnyTraining(); - - /* mctDoWarmResetMemClr_D(); */ - MCTMemClr_D(pMCTstat, pDCTstatA); }
static void LoadDQSSigTmgRegs_D(struct MCTStatStruc *pMCTstat, @@ -2392,26 +2388,6 @@ static void DCTMemClr_Init_D(struct MCTStatStruc *pMCTstat, } }
-static void MCTMemClrSync_D(struct MCTStatStruc *pMCTstat, - struct DCTStatStruc *pDCTstatA) -{ - /* Ensures that memory clear has completed on all node.*/ - u8 Node; - struct DCTStatStruc *pDCTstat; - - if (!mctGet_NVbits(NV_DQSTrainCTL)){ - /* callback to wrapper: mctDoWarmResetMemClr_D */ - } else { /* NV_DQSTrainCTL == 1 */ - for (Node = 0; Node < MAX_NODES_SUPPORTED; Node++) { - pDCTstat = pDCTstatA + Node; - - if (pDCTstat->NodePresent) { - DCTMemClr_Sync_D(pMCTstat, pDCTstat); - } - } - } -} - static void DCTMemClr_Sync_D(struct MCTStatStruc *pMCTstat, struct DCTStatStruc *pDCTstat) { @@ -3097,6 +3073,8 @@ static void GetPresetmaxF_D(struct MCTStatStruc *pMCTstat, u16 proposedFreq; u16 word;
+ printk(BIOS_DEBUG, "%s: Start\n", __func__); + /* Get CPU Si Revision defined limit (NPT) */ if (is_fam15h()) proposedFreq = 933; @@ -3121,6 +3099,8 @@ static void GetPresetmaxF_D(struct MCTStatStruc *pMCTstat, pDCTstat->PresetmaxFreq = word; } /* Check F3xE8[DdrMaxRate] for maximum DRAM data rate support */ + + printk(BIOS_DEBUG, "%s: Done\n", __func__); }
static void SPDGetTCL_D(struct MCTStatStruc *pMCTstat, diff --git a/src/northbridge/amd/amdmct/mct_ddr3/mctecc_d.c b/src/northbridge/amd/amdmct/mct_ddr3/mctecc_d.c index 6ab33a3..8701bae 100644 --- a/src/northbridge/amd/amdmct/mct_ddr3/mctecc_d.c +++ b/src/northbridge/amd/amdmct/mct_ddr3/mctecc_d.c @@ -84,6 +84,10 @@ u8 ECCInit_D(struct MCTStatStruc *pMCTstat, struct DCTStatStruc *pDCTstatA) u32 val; u16 nvbits;
+ uint32_t dword; + uint8_t sync_flood_on_dram_err[MAX_NODES_SUPPORTED]; + uint8_t sync_flood_on_any_uc_err[MAX_NODES_SUPPORTED]; + mctHookBeforeECC();
/* Construct these booleans, based on setup options, for easy handling @@ -107,6 +111,25 @@ u8 ECCInit_D(struct MCTStatStruc *pMCTstat, struct DCTStatStruc *pDCTstatA) nvbits = mctGet_NVbits(NV_DramBKScrub); OF_ScrubCTL |= nvbits;
+ /* Prevent lockups on DRAM errors during ECC init */ + for (Node = 0; Node < MAX_NODES_SUPPORTED; Node++) { + struct DCTStatStruc *pDCTstat; + pDCTstat = pDCTstatA + Node; + + if (NodePresent_D(Node)) { + dword = Get_NB32(pDCTstat->dev_nbmisc, 0x44); + sync_flood_on_dram_err[Node] = (dword >> 30) & 0x1; + sync_flood_on_any_uc_err[Node] = (dword >> 21) & 0x1; + dword &= ~(0x1 << 30); + dword &= ~(0x1 << 21); + Set_NB32(pDCTstat->dev_nbmisc, 0x44, dword); + + /* Clear the RAM before enabling ECC to prevent MCE-related lockups */ + DCTMemClr_Init_D(pMCTstat, pDCTstat); + DCTMemClr_Sync_D(pMCTstat, pDCTstat); + } + } + AllECC = 1; MemClrECC = 0; for (Node = 0; Node < MAX_NODES_SUPPORTED; Node++) { @@ -153,7 +176,7 @@ u8 ECCInit_D(struct MCTStatStruc *pMCTstat, struct DCTStatStruc *pDCTstatA) } /* Node has Dram */
if (MemClrECC) { - MCTMemClrSync_D(pMCTstat, pDCTstatA); + DCTMemClr_Sync_D(pMCTstat, pDCTstat); }
if (pDCTstat->LogicalCPUID & (AMD_DR_GT_D0 | AMD_FAM15_ALL)) { @@ -166,6 +189,19 @@ u8 ECCInit_D(struct MCTStatStruc *pMCTstat, struct DCTStatStruc *pDCTstatA) } /* if Node present */ }
+ /* Restore previous MCA error handling settings */ + for (Node = 0; Node < MAX_NODES_SUPPORTED; Node++) { + struct DCTStatStruc *pDCTstat; + pDCTstat = pDCTstatA + Node; + + if (NodePresent_D(Node)) { + dword = Get_NB32(pDCTstat->dev_nbmisc, 0x44); + dword |= (sync_flood_on_dram_err[Node] & 0x1) << 30; + dword |= (sync_flood_on_any_uc_err[Node] & 0x1) << 21; + Set_NB32(pDCTstat->dev_nbmisc, 0x44, dword); + } + } + if(AllECC) pMCTstat->GStatus |= 1<<GSB_ECCDIMMs; else
-
Timothy Pearson