diff options
Diffstat (limited to 'resources/libreboot/patch/kgpe-d16/0063-northbridge-amd-amdmct-Clear-memory-before-enabling-.patch')
| -rw-r--r-- | resources/libreboot/patch/kgpe-d16/0063-northbridge-amd-amdmct-Clear-memory-before-enabling-.patch | 185 |
1 files changed, 185 insertions, 0 deletions
diff --git a/resources/libreboot/patch/kgpe-d16/0063-northbridge-amd-amdmct-Clear-memory-before-enabling-.patch b/resources/libreboot/patch/kgpe-d16/0063-northbridge-amd-amdmct-Clear-memory-before-enabling-.patch new file mode 100644 index 0000000..da29a67 --- /dev/null +++ b/resources/libreboot/patch/kgpe-d16/0063-northbridge-amd-amdmct-Clear-memory-before-enabling-.patch @@ -0,0 +1,185 @@ +From 1900ff138ed07b4cbe30aa4f73cb59b9ec5b4720 Mon Sep 17 00:00:00 2001 +From: Timothy Pearson <tpearson@raptorengineeringinc.com> +Date: Sat, 20 Jun 2015 20:02:49 -0500 +Subject: [PATCH 063/139] 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 | 45 ++++++++------------------ + src/northbridge/amd/amdmct/mct_ddr3/mctecc_d.c | 38 +++++++++++++++++++++- + 2 files changed, 51 insertions(+), 32 deletions(-) + +diff --git a/src/northbridge/amd/amdmct/mct_ddr3/mct_d.c b/src/northbridge/amd/amdmct/mct_ddr3/mct_d.c +index f4859d0..d8a09f0 100644 +--- a/src/northbridge/amd/amdmct/mct_ddr3/mct_d.c ++++ b/src/northbridge/amd/amdmct/mct_ddr3/mct_d.c +@@ -51,8 +51,6 @@ 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); +@@ -1500,10 +1498,11 @@ 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++) { +@@ -2094,9 +2093,6 @@ 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, +@@ -2384,26 +2380,6 @@ 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) + { +@@ -2424,9 +2400,12 @@ static void DCTMemClr_Sync_D(struct MCTStatStruc *pMCTstat, + } while (!(val & (1 << Dr_MemClrStatus))); + } + +- val = 0x0FE40FC0; /* BKDG recommended */ ++ if (is_fam15h()) ++ val = 0x0ce00f41; /* BKDG recommended */ ++ else ++ val = 0x0fe40fc0; /* BKDG recommended */ + val |= MCCH_FlushWrOnStpGnt; /* Set for S3 */ +- Set_NB32(dev, 0x11C, val); ++ Set_NB32(dev, 0x11c, val); + } + + static u8 NodePresent_D(u8 Node) +@@ -3089,6 +3068,8 @@ 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; +@@ -3113,6 +3094,8 @@ 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 3a9fecc..918e91e 100644 +--- a/src/northbridge/amd/amdmct/mct_ddr3/mctecc_d.c ++++ b/src/northbridge/amd/amdmct/mct_ddr3/mctecc_d.c +@@ -88,6 +88,10 @@ 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 +@@ -111,6 +115,25 @@ 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++) { +@@ -157,7 +180,7 @@ 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)) { +@@ -170,6 +193,19 @@ 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 +-- +1.9.1 + |