diff options
Diffstat (limited to 'src/northbridge/amd/amdmct/mct_ddr3/mct_d.c')
| -rw-r--r-- | src/northbridge/amd/amdmct/mct_ddr3/mct_d.c | 70 |
1 files changed, 68 insertions, 2 deletions
diff --git a/src/northbridge/amd/amdmct/mct_ddr3/mct_d.c b/src/northbridge/amd/amdmct/mct_ddr3/mct_d.c index e1c0d4f563..cbe75b60d4 100644 --- a/src/northbridge/amd/amdmct/mct_ddr3/mct_d.c +++ b/src/northbridge/amd/amdmct/mct_ddr3/mct_d.c @@ -3332,12 +3332,24 @@ static void exit_training_mode_fam15(struct MCTStatStruc *pMCTstat, static void DQSTiming_D(struct MCTStatStruc *pMCTstat, struct DCTStatStruc *pDCTstatA, uint8_t allow_config_restore) { + uint8_t Node; u8 nv_DQSTrainCTL; + uint8_t retry_requested; if (pMCTstat->GStatus & (1 << GSB_EnDIMMSpareNW)) { return; } + /* Set initial TCWL offset to zero */ + for (Node = 0; Node < MAX_NODES_SUPPORTED; Node++) { + uint8_t dct; + struct DCTStatStruc *pDCTstat; + pDCTstat = pDCTstatA + Node; + for (dct = 0; dct < 2; dct++) + pDCTstat->tcwl_delay[dct] = 0; + } + +retry_dqs_training_and_levelization: // nv_DQSTrainCTL = mctGet_NVbits(NV_DQSTrainCTL); nv_DQSTrainCTL = !allow_config_restore; @@ -3345,7 +3357,6 @@ static void DQSTiming_D(struct MCTStatStruc *pMCTstat, phyAssistedMemFnceTraining(pMCTstat, pDCTstatA, -1); if (is_fam15h()) { - uint8_t Node; struct DCTStatStruc *pDCTstat; for (Node = 0; Node < MAX_NODES_SUPPORTED; Node++) { pDCTstat = pDCTstatA + Node; @@ -3393,6 +3404,59 @@ static void DQSTiming_D(struct MCTStatStruc *pMCTstat, mct_TrainDQSPos_D(pMCTstat, pDCTstatA); + /* Determine if DQS training requested a retrain attempt */ + retry_requested = 0; + for (Node = 0; Node < MAX_NODES_SUPPORTED; Node++) { + struct DCTStatStruc *pDCTstat; + pDCTstat = pDCTstatA + Node; + + if (pDCTstat->NodePresent) { + if (pDCTstat->TrainErrors & (1 << SB_FatalError)) { + die("DIMM training FAILED! Halting system."); + } + if (pDCTstat->TrainErrors & (1 << SB_RetryConfigTrain)) { + retry_requested = 1; + + /* Clear previous errors */ + pDCTstat->TrainErrors &= ~(1 << SB_RetryConfigTrain); + pDCTstat->TrainErrors &= ~(1 << SB_NODQSPOS); + pDCTstat->ErrStatus &= ~(1 << SB_RetryConfigTrain); + pDCTstat->ErrStatus &= ~(1 << SB_NODQSPOS); + } + } + } + + /* Retry training and levelization if requested */ + if (retry_requested) { + printk(BIOS_DEBUG, "%s: Restarting training on algorithm request\n", __func__); + /* Reset frequency to minimum */ + for (Node = 0; Node < MAX_NODES_SUPPORTED; Node++) { + struct DCTStatStruc *pDCTstat; + pDCTstat = pDCTstatA + Node; + if (pDCTstat->NodePresent) { + uint8_t original_target_freq = pDCTstat->TargetFreq; + uint8_t original_auto_speed = pDCTstat->DIMMAutoSpeed; + pDCTstat->TargetFreq = mhz_to_memclk_config(mctGet_NVbits(NV_MIN_MEMCLK)); + pDCTstat->Speed = pDCTstat->DIMMAutoSpeed = pDCTstat->TargetFreq; + SetTargetFreq(pMCTstat, pDCTstatA, Node); + pDCTstat->TargetFreq = original_target_freq; + pDCTstat->DIMMAutoSpeed = original_auto_speed; + } + } + /* Apply any DIMM timing changes */ + for (Node = 0; Node < MAX_NODES_SUPPORTED; Node++) { + struct DCTStatStruc *pDCTstat; + pDCTstat = pDCTstatA + Node; + if (pDCTstat->NodePresent) { + AutoCycTiming_D(pMCTstat, pDCTstat, 0); + if (!pDCTstat->GangedMode) + if (pDCTstat->DIMMValidDCT[1] > 0) + AutoCycTiming_D(pMCTstat, pDCTstat, 1); + } + } + goto retry_dqs_training_and_levelization; + } + TrainMaxRdLatency_En_D(pMCTstat, pDCTstatA); if (is_fam15h()) @@ -3417,7 +3481,6 @@ static void DQSTiming_D(struct MCTStatStruc *pMCTstat, } if (is_fam15h()) { - uint8_t Node; struct DCTStatStruc *pDCTstat; /* Switch DCT control register to DCT 0 per Erratum 505 */ @@ -4268,6 +4331,9 @@ static void SPD2ndTiming(struct MCTStatStruc *pMCTstat, Tcwl = 0x9; else Tcwl = 0x5; /* Power-on default */ + + /* Apply offset */ + Tcwl += pDCTstat->tcwl_delay[dct]; } /* Program DRAM Timing values */ |