| /* $NoKeywords:$ */ |
| /** |
| * @file |
| * |
| * mrtthrcSeedTrain.c |
| * |
| * Phy assisted DQS receiver enable training |
| * |
| * @xrefitem bom "File Content Label" "Release Content" |
| * @e project: AGESA |
| * @e sub-project: (Proc/Recovery/Mem) |
| * @e \$Revision: 44324 $ @e \$Date: 2010-12-22 03:16:51 -0600 (Wed, 22 Dec 2010) $ |
| * |
| **/ |
| /***************************************************************************** |
| * |
| * Copyright (c) 2011, Advanced Micro Devices, Inc. |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are met: |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * * Neither the name of Advanced Micro Devices, Inc. nor the names of |
| * its contributors may be used to endorse or promote products derived |
| * from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND |
| * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
| * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| * DISCLAIMED. IN NO EVENT SHALL ADVANCED MICRO DEVICES, INC. BE LIABLE FOR ANY |
| * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
| * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
| * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
| * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
| * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| * *************************************************************************** |
| * |
| */ |
| |
| /* |
| *---------------------------------------------------------------------------- |
| * MODULES USED |
| * |
| *---------------------------------------------------------------------------- |
| */ |
| |
| |
| |
| #include "AGESA.h" |
| #include "OptionMemory.h" |
| #include "amdlib.h" |
| #include "Ids.h" |
| #include "mm.h" |
| #include "mn.h" |
| #include "mru.h" |
| #include "mt.h" |
| #include "PlatformMemoryConfiguration.h" |
| #include "Filecode.h" |
| CODE_GROUP (G2_PEI) |
| RDATA_GROUP (G2_PEI) |
| |
| #define FILECODE PROC_RECOVERY_MEM_TECH_MRTTHRCSEEDTRAIN_FILECODE |
| /*---------------------------------------------------------------------------- |
| * DEFINITIONS AND MACROS |
| * |
| *---------------------------------------------------------------------------- |
| */ |
| #define MAX_BYTELANES 8 /* Max Bytelanes per channel */ |
| |
| /*---------------------------------------------------------------------------- |
| * TYPEDEFS AND STRUCTURES |
| * |
| *---------------------------------------------------------------------------- |
| */ |
| |
| /*---------------------------------------------------------------------------- |
| * PROTOTYPES OF LOCAL FUNCTIONS |
| * |
| *---------------------------------------------------------------------------- |
| */ |
| |
| VOID |
| STATIC |
| MemRecTPrepareRcvrEnDlySeed ( |
| IN OUT MEM_TECH_BLOCK *TechPtr, |
| IN UINT8 ChipSel |
| ); |
| |
| UINT16 |
| STATIC |
| MemRecTProgramRcvrEnDly ( |
| IN OUT MEM_TECH_BLOCK *TechPtr, |
| IN UINT8 ChipSel |
| ); |
| |
| /*---------------------------------------------------------------------------- |
| * EXPORTED FUNCTIONS |
| * |
| *---------------------------------------------------------------------------- |
| */ |
| |
| /* -----------------------------------------------------------------------------*/ |
| /** |
| * |
| * This function executes Phy assisted receiver enable training without |
| * needing a correct seed. |
| * |
| * @param[in,out] *TechPtr - Pointer to the MEM_TECH_BLOCK |
| * |
| * @pre Auto refresh and ZQCL must be disabled |
| * |
| */ |
| VOID |
| MemRecTTrainRcvrEnHwSeedless ( |
| IN OUT MEM_TECH_BLOCK *TechPtr |
| ) |
| { |
| UINT8 TempBuffer[64]; |
| UINT8 Count; |
| UINT32 TestAddrRJ16; |
| UINT8 ChipSel; |
| UINT16 MaxRcvrDly; |
| UINT8 PassMask; |
| UINT8 PrevTest; |
| UINT8 CurTest; |
| UINT8 ByteLane; |
| UINT32 OrgReg; |
| MEM_NB_BLOCK *NBPtr; |
| |
| NBPtr = TechPtr->NBPtr; |
| |
| IDS_HDT_CONSOLE (MEM_STATUS, "\nStart HW RxEn training\n"); |
| AGESA_TESTPOINT (TpProcMemReceiverEnableTraining , &(NBPtr->MemPtr->StdHeader)); |
| |
| // Disable auto refresh by configuring F2x[1, 0]8C[DisAutoRefresh] = 1. |
| NBPtr->SetBitField (NBPtr, BFDisAutoRefresh, 1); |
| // Disable ZQ calibration short command by configuring F2x[1, 0]94[ZqcsInterval] = 00b. |
| NBPtr->SetBitField (NBPtr, BFZqcsInterval, 0); |
| |
| // Set environment settings before training |
| MemRecTBeginTraining (TechPtr); |
| |
| ChipSel = NBPtr->DimmToBeUsed << 1; |
| TechPtr->ChipSel = ChipSel; |
| TestAddrRJ16 = 1 << 21; |
| |
| // 1.Prepare the DIMMs for training |
| NBPtr->SetBitField (NBPtr, BFTrDimmSel, ChipSel >> 1); |
| |
| // 2.Prepare the phy for DQS receiver enable training. |
| MemRecTPrepareRcvrEnDlySeed (TechPtr, ChipSel); |
| |
| // 3.BIOS initiates the phy assisted receiver enable training |
| NBPtr->SetBitField (NBPtr, BFDqsRcvTrEn, 1); |
| |
| // 4.BIOS begins sending out of back-to-back reads to create |
| // a continuous stream of DQS edges on the DDR interface. |
| for (Count = 0; Count < 3; Count++) { |
| NBPtr->ReadPattern (NBPtr, TempBuffer, TestAddrRJ16, 64); |
| } |
| |
| // 6.Wait 200 MEMCLKs. |
| MemRecUWait10ns (200, NBPtr->MemPtr); |
| |
| // 7.Program [DqsRcvTrEn]=0 to stop the DQS receive enable training. |
| NBPtr->SetBitField (NBPtr, BFDqsRcvTrEn, 0); |
| |
| // 8.Get the gross and fine delay values. |
| // 9.Calculate the corresponding final delay values |
| MaxRcvrDly = MemRecTProgramRcvrEnDly (TechPtr, ChipSel); |
| |
| // |
| // SEEDLESS TRAINING |
| // Sweep RxEn even gross delays to find the correct RxEn delays |
| // |
| OrgReg = MemRecNGetBitFieldNb (NBPtr, BFBlockRxDqsLock); |
| NBPtr->SetBitField (NBPtr, BFBlockRxDqsLock, OrgReg | 0x0100); |
| PassMask = 0; |
| PrevTest = 0; |
| |
| // Use 3 CL pattern since recovery mode uses conservative settings and is not expected to work with long burst |
| NBPtr->WritePattern (NBPtr, TestAddrRJ16, TempBuffer, 3); |
| |
| while (PassMask != 0xFF) { |
| NBPtr->SetMaxLatency (NBPtr, MaxRcvrDly); |
| NBPtr->ReadPattern (NBPtr, TempBuffer, TestAddrRJ16, 3); |
| CurTest = (UINT8) NBPtr->CompareTestPattern (NBPtr, TempBuffer, TempBuffer, 3); |
| |
| // Mark pass when transition from P to F |
| PassMask |= (PrevTest & (~CurTest)); |
| |
| for (ByteLane = 0; ByteLane < 8; ByteLane++) { |
| IDS_HDT_CONSOLE (MEM_FLOW, " %02x", TechPtr->RcvrEnDlyOpt[ByteLane]); |
| if ((CurTest & (1 << ByteLane)) == 0) { |
| IDS_HDT_CONSOLE (MEM_FLOW, " .\n"); |
| } else { |
| IDS_HDT_CONSOLE (MEM_FLOW, " P\n"); |
| } |
| if ((PassMask & (1 << ByteLane)) == 0) { |
| // For byte lanes that has not passed, increase by 2 UIs |
| TechPtr->RcvrEnDlyOpt[ByteLane] += 0x40; |
| NBPtr->SetTrainDly (NBPtr, AccessRcvEnDly, DIMM_BYTE_ACCESS ((ChipSel >> 1), ByteLane), TechPtr->RcvrEnDlyOpt[ByteLane]); |
| if (TechPtr->RcvrEnDlyOpt[ByteLane] > MaxRcvrDly) { |
| MaxRcvrDly = TechPtr->RcvrEnDlyOpt[ByteLane]; |
| } |
| } else { |
| // For byte lanes that has passed, decrease 5/2 UI to get back to the middle of preamble |
| NBPtr->SetTrainDly (NBPtr, AccessRcvEnDly, DIMM_BYTE_ACCESS ((ChipSel >> 1), ByteLane), TechPtr->RcvrEnDlyOpt[ByteLane] - 0x50); |
| } |
| } |
| PrevTest = CurTest; |
| } |
| NBPtr->SetBitField (NBPtr, BFBlockRxDqsLock, OrgReg); |
| |
| // Set final MaxRdLat |
| NBPtr->SetMaxLatency (NBPtr, MaxRcvrDly - 0x50); |
| |
| // Restore environment settings after training |
| MemRecTEndTraining (TechPtr); |
| // 13.Program F2x[1, 0]8C[DisAutoRefresh] = 0. |
| NBPtr->SetBitField (NBPtr, BFDisAutoRefresh, 0); |
| // 14.Program F2x[1, 0]94[ZqcsInterval] to the proper interval for the current memory configuration. |
| NBPtr->SetBitField (NBPtr, BFZqcsInterval, 2); |
| |
| IDS_HDT_CONSOLE (MEM_FLOW, "End HW RxEn training\n\n"); |
| } |
| |
| |
| /* -----------------------------------------------------------------------------*/ |
| /** |
| * |
| * This function calculates RcvEn seed value for each rank |
| * |
| * @param[in,out] *TechPtr - Pointer to the MEM_TECH_BLOCK |
| * @param[in] ChipSel - rank to be trained |
| * |
| */ |
| VOID |
| STATIC |
| MemRecTPrepareRcvrEnDlySeed ( |
| IN OUT MEM_TECH_BLOCK *TechPtr, |
| IN UINT8 ChipSel |
| ) |
| { |
| MEM_NB_BLOCK *NBPtr; |
| UINT8 ByteLane; |
| |
| NBPtr = TechPtr->NBPtr; |
| |
| // Program a seed of 0x20 to make the result falls in (0,40) range |
| IDS_HDT_CONSOLE (MEM_FLOW, "Seeds: 20\n"); |
| for (ByteLane = 0; ByteLane < 8; ByteLane++) { |
| NBPtr->SetTrainDly (NBPtr, AccessPhRecDly, DIMM_BYTE_ACCESS (ChipSel >> 1, ByteLane), 0x20); |
| } |
| } |
| |
| /* -----------------------------------------------------------------------------*/ |
| /** |
| * |
| * This function calculates final RcvrEnDly for each rank |
| * |
| * @param[in,out] *TechPtr - Pointer to the MEM_TECH_BLOCK |
| * @param[in] ChipSel - Rank to be trained |
| * |
| * @return MaxDly - The largest delay value |
| * |
| */ |
| UINT16 |
| STATIC |
| MemRecTProgramRcvrEnDly ( |
| IN OUT MEM_TECH_BLOCK *TechPtr, |
| IN UINT8 ChipSel |
| ) |
| { |
| MEM_NB_BLOCK *NBPtr; |
| CH_DEF_STRUCT *ChannelPtr; |
| UINT8 ByteLane; |
| UINT16 RcvEnDly; |
| UINT16 MaxDly; |
| |
| NBPtr = TechPtr->NBPtr; |
| ChannelPtr = TechPtr->NBPtr->ChannelPtr; |
| MaxDly = 0; |
| IDS_HDT_CONSOLE (MEM_FLOW, " PRE RxEn\n"); |
| for (ByteLane = 0; ByteLane < 8; ByteLane++) { |
| // Read PRE |
| RcvEnDly = (UINT8) NBPtr->GetTrainDly (NBPtr, AccessPhRecDly, DIMM_BYTE_ACCESS (ChipSel >> 1, ByteLane)); |
| IDS_HDT_CONSOLE (MEM_FLOW, " %02x ", RcvEnDly); |
| |
| // Add 1 UI to get to the midpoint of preamble |
| RcvEnDly += 0x20; |
| |
| // And add 1/2 UI to start seedless training |
| RcvEnDly += 0x10; |
| |
| // Record Max RxEn for MaxRdLat calculation |
| if (RcvEnDly > MaxDly) { |
| MaxDly = RcvEnDly; |
| } |
| |
| // Write RxEn delays |
| NBPtr->SetTrainDly (NBPtr, AccessRcvEnDly, DIMM_BYTE_ACCESS ((ChipSel >> 1), ByteLane), RcvEnDly); |
| TechPtr->RcvrEnDlyOpt[ByteLane] = RcvEnDly; |
| IDS_HDT_CONSOLE (MEM_FLOW, " %02x\n", RcvEnDly); |
| } |
| |
| return MaxDly; |
| } |
| |