1 /** 2 Copyright (c) 2009 - 2013, Intel Corporation. All rights reserved.<BR> 3 This program and the accompanying materials 4 are licensed and made available under the terms and conditions of the BSD License 5 which accompanies this distribution. The full text of the license may be found at 6 http://opensource.org/licenses/bsd-license.php 7 8 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, 9 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. 10 11 12 Module Name: 13 14 SaveMemoryConfig.c 15 16 Abstract: 17 This is the driver that locates the MemoryConfigurationData HOB, if it 18 exists, and saves the data to nvRAM. 19 20 21 22 --*/ 23 24 #include "SaveMemoryConfig.h" 25 26 CHAR16 EfiMemoryConfigVariable[] = L"MemoryConfig"; 27 28 29 EFI_STATUS 30 EFIAPI 31 SaveMemoryConfigEntryPoint ( 32 IN EFI_HANDLE ImageHandle, 33 IN EFI_SYSTEM_TABLE *SystemTable 34 ) 35 /*++ 36 37 Routine Description: 38 This is the standard EFI driver point that detects whether there is a 39 MemoryConfigurationData HOB and, if so, saves its data to nvRAM. 40 41 Arguments: 42 ImageHandle - Handle for the image of this driver 43 SystemTable - Pointer to the EFI System Table 44 45 Returns: 46 EFI_SUCCESS - if the data is successfully saved or there was no data 47 EFI_NOT_FOUND - if the HOB list could not be located. 48 EFI_UNLOAD_IMAGE - It is not success 49 50 --*/ 51 { 52 EFI_STATUS Status=EFI_SUCCESS; 53 VOID *MemHobData; 54 VOID *VariableData; 55 UINTN BufferSize; 56 BOOLEAN MfgMode; 57 EFI_PLATFORM_SETUP_ID *BootModeBuffer; 58 EFI_PLATFORM_INFO_HOB *PlatformInfoHobPtr; 59 MEM_INFO_PROTOCOL *MemInfoProtocol; 60 EFI_HANDLE Handle; 61 UINT8 Channel, Slot; 62 VOID *GuidHob; 63 64 VariableData = NULL; 65 MfgMode = FALSE; 66 Handle = NULL; 67 BootModeBuffer = NULL; 68 MemHobData = NULL; 69 PlatformInfoHobPtr = NULL; 70 BufferSize = 0; 71 72 // 73 // Get Platform Info HOB 74 // 75 GuidHob = GetFirstGuidHob (&gEfiPlatformInfoGuid); 76 if (GuidHob == NULL) { 77 Status = EFI_NOT_FOUND; 78 } 79 ASSERT_EFI_ERROR (Status); 80 81 PlatformInfoHobPtr = GET_GUID_HOB_DATA (GuidHob); 82 83 // 84 // Get the BootMode guid hob 85 // 86 GuidHob = GetFirstGuidHob (&gEfiPlatformBootModeGuid); 87 if (GuidHob == NULL) { 88 Status = EFI_NOT_FOUND; 89 } 90 ASSERT_EFI_ERROR (Status); 91 92 BootModeBuffer = GET_GUID_HOB_DATA (GuidHob); 93 94 95 // 96 // Check whether in Manufacturing Mode 97 // 98 if (BootModeBuffer) { 99 if ( !CompareMem ( //EfiCompareMem 100 &BootModeBuffer->SetupName, 101 MANUFACTURE_SETUP_NAME, 102 StrSize (MANUFACTURE_SETUP_NAME) //EfiStrSize 103 ) ) { 104 MfgMode = TRUE; 105 } 106 } 107 108 if (MfgMode) { 109 // 110 // Don't save Memory Configuration in Manufacturing Mode. Clear memory configuration. 111 // 112 Status = gRT->SetVariable ( 113 EfiMemoryConfigVariable, 114 &gEfiVlv2VariableGuid, 115 EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS, 116 0, 117 NULL 118 ); 119 } else { 120 121 MemInfoProtocol = (MEM_INFO_PROTOCOL*)AllocateZeroPool(sizeof(MEM_INFO_PROTOCOL)); 122 if (PlatformInfoHobPtr != NULL) { 123 MemInfoProtocol->MemInfoData.memSize = 0; 124 for (Channel = 0; Channel < CH_NUM; Channel ++){ 125 for (Slot = 0; Slot < DIMM_NUM; Slot ++){ 126 MemInfoProtocol->MemInfoData.dimmSize[Slot + (Channel * DIMM_NUM)] = PlatformInfoHobPtr->MemData.DimmSize[Slot + (Channel * DIMM_NUM)]; 127 } 128 } 129 MemInfoProtocol->MemInfoData.memSize = PlatformInfoHobPtr->MemData.MemSize; 130 MemInfoProtocol->MemInfoData.EccSupport = PlatformInfoHobPtr->MemData.EccSupport; 131 MemInfoProtocol->MemInfoData.ddrFreq = PlatformInfoHobPtr->MemData.DdrFreq; 132 MemInfoProtocol->MemInfoData.ddrType = PlatformInfoHobPtr->MemData.DdrType; 133 if (MemInfoProtocol->MemInfoData.memSize == 0){ 134 // 135 // We hardcode if MRC didn't fill these info in 136 // 137 MemInfoProtocol->MemInfoData.memSize = 0x800; //per 1MB 138 MemInfoProtocol->MemInfoData.dimmSize[0] = 0x800; 139 MemInfoProtocol->MemInfoData.dimmSize[1] = 0; 140 MemInfoProtocol->MemInfoData.EccSupport = FALSE; 141 MemInfoProtocol->MemInfoData.ddrType = 5; //DDRType_LPDDR3 142 } 143 144 Status = gBS->InstallMultipleProtocolInterfaces ( 145 &Handle, 146 &gMemInfoProtocolGuid, 147 MemInfoProtocol, 148 NULL 149 ); 150 } 151 152 Status = EFI_SUCCESS; 153 if (BOOT_WITH_MINIMAL_CONFIGURATION != GetBootModeHob()){ 154 // 155 // Get the Memory Config guid hob 156 // 157 GuidHob = GetFirstGuidHob (&gEfiMemoryConfigDataGuid); 158 if (GuidHob == NULL) { 159 Status = EFI_NOT_FOUND; 160 } 161 ASSERT_EFI_ERROR (Status); 162 163 MemHobData = GET_GUID_HOB_DATA (GuidHob); 164 BufferSize = GET_GUID_HOB_DATA_SIZE (GuidHob); 165 166 Status = gRT->GetVariable ( 167 EfiMemoryConfigVariable, 168 &gEfiVlv2VariableGuid, 169 NULL, 170 &BufferSize, 171 VariableData 172 ); 173 if (EFI_ERROR(Status) && (MemHobData != NULL)) { 174 Status = gRT->SetVariable ( 175 EfiMemoryConfigVariable, 176 &gEfiVlv2VariableGuid, 177 (EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS), 178 BufferSize, 179 MemHobData 180 ); 181 } 182 } 183 184 } // if-else MfgMode 185 186 return EFI_SUCCESS; 187 } 188
