/**
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Copyright (c) 2009 - 2013, Intel Corporation. All rights reserved.<BR>
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SPDX-License-Identifier: BSD-2-Clause-Patent
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Module Name:
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SaveMemoryConfig.c
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Abstract:
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This is the driver that locates the MemoryConfigurationData HOB, if it
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exists, and saves the data to nvRAM.
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--*/
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#include "SaveMemoryConfig.h"
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CHAR16 EfiMemoryConfigVariable[] = L"MemoryConfig";
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EFI_STATUS
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EFIAPI
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SaveMemoryConfigEntryPoint (
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IN EFI_HANDLE ImageHandle,
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IN EFI_SYSTEM_TABLE *SystemTable
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)
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/*++
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Routine Description:
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This is the standard EFI driver point that detects whether there is a
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MemoryConfigurationData HOB and, if so, saves its data to nvRAM.
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Arguments:
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ImageHandle - Handle for the image of this driver
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SystemTable - Pointer to the EFI System Table
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Returns:
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EFI_SUCCESS - if the data is successfully saved or there was no data
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EFI_NOT_FOUND - if the HOB list could not be located.
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EFI_UNLOAD_IMAGE - It is not success
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--*/
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{
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EFI_STATUS Status=EFI_SUCCESS;
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VOID *MemHobData;
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VOID *VariableData;
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UINTN BufferSize;
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BOOLEAN MfgMode;
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EFI_PLATFORM_SETUP_ID *BootModeBuffer;
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EFI_PLATFORM_INFO_HOB *PlatformInfoHobPtr;
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MEM_INFO_PROTOCOL *MemInfoProtocol;
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EFI_HANDLE Handle;
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UINT8 Channel, Slot;
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VOID *GuidHob;
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VariableData = NULL;
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MfgMode = FALSE;
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Handle = NULL;
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BootModeBuffer = NULL;
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MemHobData = NULL;
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PlatformInfoHobPtr = NULL;
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BufferSize = 0;
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//
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// Get Platform Info HOB
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//
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GuidHob = GetFirstGuidHob (&gEfiPlatformInfoGuid);
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if (GuidHob == NULL) {
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Status = EFI_NOT_FOUND;
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}
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ASSERT_EFI_ERROR (Status);
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PlatformInfoHobPtr = GET_GUID_HOB_DATA (GuidHob);
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//
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// Get the BootMode guid hob
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//
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GuidHob = GetFirstGuidHob (&gEfiPlatformBootModeGuid);
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if (GuidHob == NULL) {
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Status = EFI_NOT_FOUND;
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}
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ASSERT_EFI_ERROR (Status);
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BootModeBuffer = GET_GUID_HOB_DATA (GuidHob);
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//
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// Check whether in Manufacturing Mode
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//
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if (BootModeBuffer) {
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if ( !CompareMem ( //EfiCompareMem
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&BootModeBuffer->SetupName,
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MANUFACTURE_SETUP_NAME,
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StrSize (MANUFACTURE_SETUP_NAME) //EfiStrSize
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) ) {
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MfgMode = TRUE;
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}
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}
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if (MfgMode) {
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//
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// Don't save Memory Configuration in Manufacturing Mode. Clear memory configuration.
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//
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Status = gRT->SetVariable (
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EfiMemoryConfigVariable,
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&gEfiVlv2VariableGuid,
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EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS,
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0,
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NULL
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);
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} else {
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MemInfoProtocol = (MEM_INFO_PROTOCOL*)AllocateZeroPool(sizeof(MEM_INFO_PROTOCOL));
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if (PlatformInfoHobPtr != NULL) {
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MemInfoProtocol->MemInfoData.memSize = 0;
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for (Channel = 0; Channel < CH_NUM; Channel ++){
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for (Slot = 0; Slot < DIMM_NUM; Slot ++){
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MemInfoProtocol->MemInfoData.dimmSize[Slot + (Channel * DIMM_NUM)] = PlatformInfoHobPtr->MemData.DimmSize[Slot + (Channel * DIMM_NUM)];
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}
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}
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MemInfoProtocol->MemInfoData.memSize = PlatformInfoHobPtr->MemData.MemSize;
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MemInfoProtocol->MemInfoData.EccSupport = PlatformInfoHobPtr->MemData.EccSupport;
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MemInfoProtocol->MemInfoData.ddrFreq = PlatformInfoHobPtr->MemData.DdrFreq;
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MemInfoProtocol->MemInfoData.ddrType = PlatformInfoHobPtr->MemData.DdrType;
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if (MemInfoProtocol->MemInfoData.memSize == 0){
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//
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// We hardcode if MRC didn't fill these info in
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//
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MemInfoProtocol->MemInfoData.memSize = 0x800; //per 1MB
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MemInfoProtocol->MemInfoData.dimmSize[0] = 0x800;
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MemInfoProtocol->MemInfoData.dimmSize[1] = 0;
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MemInfoProtocol->MemInfoData.EccSupport = FALSE;
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MemInfoProtocol->MemInfoData.ddrType = 5; //DDRType_LPDDR3
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}
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Status = gBS->InstallMultipleProtocolInterfaces (
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&Handle,
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&gMemInfoProtocolGuid,
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MemInfoProtocol,
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NULL
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);
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}
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Status = EFI_SUCCESS;
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if (BOOT_WITH_MINIMAL_CONFIGURATION != GetBootModeHob()){
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//
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// Get the Memory Config guid hob
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//
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GuidHob = GetFirstGuidHob (&gEfiMemoryConfigDataGuid);
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if (GuidHob == NULL) {
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Status = EFI_NOT_FOUND;
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}
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ASSERT_EFI_ERROR (Status);
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MemHobData = GET_GUID_HOB_DATA (GuidHob);
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BufferSize = GET_GUID_HOB_DATA_SIZE (GuidHob);
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Status = gRT->GetVariable (
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EfiMemoryConfigVariable,
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&gEfiVlv2VariableGuid,
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NULL,
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&BufferSize,
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VariableData
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);
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if (EFI_ERROR(Status) && (MemHobData != NULL)) {
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Status = gRT->SetVariable (
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EfiMemoryConfigVariable,
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&gEfiVlv2VariableGuid,
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(EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS),
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BufferSize,
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MemHobData
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);
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}
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}
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} // if-else MfgMode
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return EFI_SUCCESS;
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}
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