1 /** @file 2 3 Copyright (c) 2004 - 2014, Intel Corporation. All rights reserved.<BR> 4 5 6 This program and the accompanying materials are licensed and made available under 7 8 the terms and conditions of the BSD License that accompanies this distribution. 9 10 The full text of the license may be found at 11 12 http://opensource.org/licenses/bsd-license.php. 13 14 15 16 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, 17 18 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. 19 20 21 22 23 24 25 Module Name: 26 27 FlashMap.c 28 29 Abstract: 30 31 Build GUIDed HOBs for platform specific flash map. 32 33 --*/ 34 35 #include "Efi.h" 36 #include "Pei.h" 37 #include "PeiLib.h" 38 #include "PeiLib.h" 39 #include "EfiFlashMap.h" 40 #include EFI_PROTOCOL_CONSUMER (FirmwareVolumeBlock) 41 #include EFI_GUID_DEFINITION (FlashMapHob) 42 #include EFI_GUID_DEFINITION (SystemNvDataGuid) 43 #include EFI_GUID_DEFINITION (FirmwareFileSystem) 44 45 EFI_GUID mFvBlockGuid = EFI_FIRMWARE_VOLUME_BLOCK_PROTOCOL_GUID; 46 EFI_GUID mFfsGuid = EFI_FIRMWARE_FILE_SYSTEM_GUID; 47 EFI_GUID mSystemDataGuid = EFI_SYSTEM_NV_DATA_HOB_GUID; 48 49 static EFI_FLASH_AREA_DATA mFlashAreaData[] = { 50 // 51 // Variable area 52 // 53 { FixedPcdGet32 (PcdFlashNvStorageVariableBase), 54 FixedPcdGet32 (PcdFlashNvStorageVariableSize), 55 EFI_FLASH_AREA_SUBFV | EFI_FLASH_AREA_MEMMAPPED_FV, 56 EFI_FLASH_AREA_EFI_VARIABLES }, 57 58 // 59 // Boot block 2nd part 60 // 61 { FixedPcdGet32 (PcdFlashFvRecovery2Base), 62 FixedPcdGet32 (PcdFlashFvRecovery2Size), 63 EFI_FLASH_AREA_SUBFV | EFI_FLASH_AREA_MEMMAPPED_FV, 64 EFI_FLASH_AREA_FTW_BACKUP }, 65 66 // 67 // Recovery FV 68 // 69 { FixedPcdGet32 (PcdFlashFvRecoveryBase), 70 FixedPcdGet32 (PcdFlashFvRecoverySize), 71 EFI_FLASH_AREA_FV | EFI_FLASH_AREA_MEMMAPPED_FV, 72 EFI_FLASH_AREA_RECOVERY_BIOS }, 73 74 // 75 // Main FV 76 // 77 { FixedPcdGet32 (PcdFlashFvMainBase), 78 FixedPcdGet32 (PcdFlashFvMainSize), 79 EFI_FLASH_AREA_FV | EFI_FLASH_AREA_MEMMAPPED_FV, 80 EFI_FLASH_AREA_MAIN_BIOS } 81 82 }; 83 84 #define NUM_FLASH_AREA_DATA (ARRAY_SIZE (mFlashAreaData)) 85 86 /** 87 Build GUID HOBs for platform specific flash map. PeimInitializeFlashMap(IN EFI_FFS_FILE_HEADER * FfsHeader,IN EFI_PEI_SERVICES ** PeiServices)88 89 @param FfsHeader Pointer this FFS file header. 90 @param PeiServices General purpose services available to every PEIM. 91 92 @retval EFI_SUCCESS Guid HOBs for platform flash map is built. 93 @retval Otherwise Failed to build the Guid HOB data. 94 95 **/ 96 EFI_STATUS 97 PeimInitializeFlashMap ( 98 IN EFI_FFS_FILE_HEADER *FfsHeader, 99 IN EFI_PEI_SERVICES **PeiServices 100 ) 101 { 102 UINTN Index; 103 EFI_FLASH_AREA_HOB_DATA FlashHobData; 104 105 // 106 // Build flash area entries as GUIDed HOBs. 107 // 108 for (Index = 0; Index < NUM_FLASH_AREA_DATA; Index++) { 109 ZeroMem(&FlashHobData, sizeof (EFI_FLASH_AREA_HOB_DATA)); 110 111 FlashHobData.AreaType = mFlashAreaData[Index].AreaType; 112 FlashHobData.NumberOfEntries = 1; 113 FlashHobData.SubAreaData.Attributes = mFlashAreaData[Index].Attributes; 114 FlashHobData.SubAreaData.Base = (EFI_PHYSICAL_ADDRESS) (UINTN) mFlashAreaData[Index].Base; 115 FlashHobData.SubAreaData.Length = (EFI_PHYSICAL_ADDRESS) (UINTN) mFlashAreaData[Index].Length; 116 117 switch (FlashHobData.AreaType) { 118 case EFI_FLASH_AREA_RECOVERY_BIOS: 119 case EFI_FLASH_AREA_MAIN_BIOS: 120 CopyMem ( 121 &FlashHobData.AreaTypeGuid, 122 &mFfsGuid, 123 sizeof (EFI_GUID) 124 ); 125 CopyMem ( 126 &FlashHobData.SubAreaData.FileSystem, 127 &mFvBlockGuid, 128 sizeof (EFI_GUID) 129 ); 130 break; 131 132 case EFI_FLASH_AREA_GUID_DEFINED: 133 CopyMem ( 134 &FlashHobData.AreaTypeGuid, 135 &mSystemDataGuid, 136 sizeof (EFI_GUID) 137 ); 138 CopyMem ( 139 &FlashHobData.SubAreaData.FileSystem, 140 &mFvBlockGuid, 141 sizeof (EFI_GUID) 142 ); 143 break; 144 145 default: 146 break; 147 } 148 149 PeiBuildHobGuidData(PeiServices, 150 &gEfiFlashMapHobGuid, 151 &FlashHobData, 152 sizeof (EFI_FLASH_AREA_HOB_DATA) 153 ); 154 } 155 return EFI_SUCCESS; 156 } 157 158