| /* $NoKeywords:$ */ |
| /** |
| * @file |
| * |
| * lvddr3.c |
| * |
| * Voltage change for DDR3 DIMMs. |
| * |
| * @xrefitem bom "File Content Label" "Release Content" |
| * @e project: AGESA |
| * @e sub-project: (Mem/Feat/LVDDR3) |
| * @e \$Revision: 63425 $ @e \$Date: 2011-12-22 11:24:10 -0600 (Thu, 22 Dec 2011) $ |
| * |
| **/ |
| /***************************************************************************** |
| * |
| * Copyright 2008 - 2012 ADVANCED MICRO DEVICES, INC. All Rights Reserved. |
| * |
| * AMD is granting you permission to use this software (the Materials) |
| * pursuant to the terms and conditions of your Software License Agreement |
| * with AMD. This header does *NOT* give you permission to use the Materials |
| * or any rights under AMD's intellectual property. Your use of any portion |
| * of these Materials shall constitute your acceptance of those terms and |
| * conditions. If you do not agree to the terms and conditions of the Software |
| * License Agreement, please do not use any portion of these Materials. |
| * |
| * CONFIDENTIALITY: The Materials and all other information, identified as |
| * confidential and provided to you by AMD shall be kept confidential in |
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| * |
| * LIMITATION OF LIABILITY: THE MATERIALS AND ANY OTHER RELATED INFORMATION |
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| * *************************************************************************** |
| * |
| */ |
| |
| /* |
| *---------------------------------------------------------------------------- |
| * MODULES USED |
| * |
| *---------------------------------------------------------------------------- |
| */ |
| |
| |
| |
| #include "AGESA.h" |
| #include "amdlib.h" |
| #include "Ids.h" |
| #include "mm.h" |
| #include "mn.h" |
| #include "mt.h" |
| #include "Filecode.h" |
| CODE_GROUP (G2_PEI) |
| RDATA_GROUP (G2_PEI) |
| |
| #define FILECODE PROC_MEM_FEAT_LVDDR3_MFLVDDR3_FILECODE |
| /* features */ |
| #include "mflvddr3.h" |
| |
| |
| /*---------------------------------------------------------------------------- |
| * DEFINITIONS AND MACROS |
| * |
| *---------------------------------------------------------------------------- |
| */ |
| |
| /*---------------------------------------------------------------------------- |
| * TYPEDEFS AND STRUCTURES |
| * |
| *---------------------------------------------------------------------------- |
| */ |
| |
| /*---------------------------------------------------------------------------- |
| * PROTOTYPES OF LOCAL FUNCTIONS |
| * |
| *---------------------------------------------------------------------------- |
| */ |
| |
| /*---------------------------------------------------------------------------- |
| * EXPORTED FUNCTIONS |
| * |
| *---------------------------------------------------------------------------- |
| */ |
| |
| /*-----------------------------------------------------------------------------*/ |
| /** |
| * |
| * This function calculate the common lowest voltage supported by all DDR3 |
| * DIMMs in the system. This function only needs to be called on BSP. |
| * |
| * @param[in, out] *NBPtr - Pointer to NB block |
| * |
| * @return TRUE - This feature is enabled. |
| * @return FALSE - This feature is not enabled. |
| */ |
| |
| BOOLEAN |
| MemFLvDdr3 ( |
| IN OUT MEM_NB_BLOCK *NBPtr |
| ) |
| { |
| CH_DEF_STRUCT *ChannelPtr; |
| MEM_TECH_BLOCK *TechPtr; |
| MEM_SHARED_DATA *mmSharedPtr; |
| UINT8 Dct; |
| UINT8 Channel; |
| UINT8 Dimm; |
| UINT8 *SpdBufferPtr; |
| UINT8 VDDByte; |
| UINT8 VoltageMap; |
| |
| mmSharedPtr = NBPtr->SharedPtr; |
| TechPtr = NBPtr->TechPtr; |
| VoltageMap = 0xFF; |
| |
| for (Dct = 0; Dct < NBPtr->DctCount; Dct++) { |
| NBPtr->SwitchDCT (NBPtr, Dct); |
| for (Channel = 0; Channel < NBPtr->ChannelCount; Channel++) { |
| NBPtr->SwitchChannel (NBPtr, Channel); |
| ChannelPtr = NBPtr->ChannelPtr; |
| for (Dimm = 0; Dimm < MAX_DIMMS_PER_CHANNEL; Dimm++) { |
| if (TechPtr->GetDimmSpdBuffer (TechPtr, &SpdBufferPtr, Dimm)) { |
| // SPD byte 6: Module Nominal Voltage, VDD |
| // 1.5v - bit 0 |
| // 1.35v - bit 1 |
| // 1.2v - bit 2 |
| VDDByte = SpdBufferPtr[MNVVDD]; |
| IDS_HDT_CONSOLE (MEM_FLOW, "Node%d DCT%d Channel%d Dimm%d VDD Byte: 0x%02x\n", NBPtr->Node, Dct, Channel, Dimm, VDDByte); |
| |
| // Reverse the 1.5V operable bit. So its encoding can be consistent |
| // with that of 1.35V and 1.25V operable bit. |
| VDDByte ^= 1; |
| ASSERT (VDDByte != 0); |
| |
| if (mmSharedPtr->VoltageMap != 0) { |
| // Get the common supported voltage map |
| VoltageMap &= VDDByte; |
| } else { |
| // This is the second execution of all the loop as no common voltage is found |
| if (VDDByte == (1 << VOLT1_5_ENCODED_VAL)) { |
| // Always exclude 1.5V dimm if no common voltage is found |
| ChannelPtr->DimmExclude |= (UINT16) 1 << Dimm; |
| } |
| } |
| } |
| } |
| if (mmSharedPtr->VoltageMap == 0) { |
| NBPtr->DCTPtr->Timings.DimmExclude |= ChannelPtr->DimmExclude; |
| } |
| } |
| } |
| |
| if (mmSharedPtr->VoltageMap != 0) { |
| mmSharedPtr->VoltageMap &= VoltageMap; |
| } |
| |
| return TRUE; |
| } |
| |
| /*---------------------------------------------------------------------------- |
| * LOCAL FUNCTIONS |
| * |
| *---------------------------------------------------------------------------- |
| */ |
