1 /**@file 2 Defines data structure that is the volume header found. 3 These data is intent to decouple FVB driver with FV header. 4 5 Copyright (c) 2006 - 2015, Intel Corporation. All rights reserved.<BR> 6 7 This program and the accompanying materials are licensed and made available under 9 the terms and conditions of the BSD License that accompanies this distribution. 11 The full text of the license may be found at 13 http://opensource.org/licenses/bsd-license.php. 15 17 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, 19 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. 21 23 25 **/ 26 27 #include <PiDxe.h> 28 #include <Protocol/FirmwareVolumeBlock.h> 29 #include <Library/PcdLib.h> 30 #include <Library/DebugLib.h> 31 #include <Library/BaseLib.h> 32 #include <Guid/FirmwareFileSystem2.h> 33 #include <Guid/SystemNvDataGuid.h> 34 35 #define FIRMWARE_BLOCK_SIZE 0x8000 36 #define FVB_MEDIA_BLOCK_SIZE (FIRMWARE_BLOCK_SIZE * 2) 37 38 #define FV_RECOVERY_BASE_ADDRESS FixedPcdGet32(PcdFlashFvRecoveryBase) 39 #define RECOVERY_BIOS_BLOCK_NUM (FixedPcdGet32(PcdFlashFvRecoverySize) / FVB_MEDIA_BLOCK_SIZE) 40 41 #define FV_MAIN_BASE_ADDRESS FixedPcdGet32(PcdFlashFvMainBase) 42 #define MAIN_BIOS_BLOCK_NUM (FixedPcdGet32(PcdFlashFvMainSize) / FVB_MEDIA_BLOCK_SIZE) 43 44 #define NV_STORAGE_BASE_ADDRESS FixedPcdGet32(PcdFlashNvStorageVariableBase) 45 #define SYSTEM_NV_BLOCK_NUM ((FixedPcdGet32(PcdFlashNvStorageVariableSize)+ FixedPcdGet32(PcdFlashNvStorageFtwWorkingSize) + FixedPcdGet32(PcdFlashNvStorageFtwSpareSize))/ FVB_MEDIA_BLOCK_SIZE) 46 47 typedef struct { 48 EFI_PHYSICAL_ADDRESS BaseAddress; 49 EFI_FIRMWARE_VOLUME_HEADER FvbInfo; 50 EFI_FV_BLOCK_MAP_ENTRY End[1]; 51 } EFI_FVB2_MEDIA_INFO; 52 53 // 54 // This data structure contains a template of all correct FV headers, which is used to restore 55 // Fv header if it's corrupted. 56 // 57 EFI_FVB2_MEDIA_INFO mPlatformFvbMediaInfo[] = { 58 // 59 // Main BIOS FVB 60 // 61 { 62 FV_MAIN_BASE_ADDRESS, 63 { 64 {0,}, //ZeroVector[16] 65 EFI_FIRMWARE_FILE_SYSTEM2_GUID, 66 FVB_MEDIA_BLOCK_SIZE * MAIN_BIOS_BLOCK_NUM, 67 EFI_FVH_SIGNATURE, 68 0x0004feff, // check MdePkg/Include/Pi/PiFirmwareVolume.h for details on EFI_FVB_ATTRIBUTES_2 69 sizeof (EFI_FIRMWARE_VOLUME_HEADER) + sizeof (EFI_FV_BLOCK_MAP_ENTRY), 70 0, //CheckSum which will be calucated dynamically. 71 0, //ExtHeaderOffset 72 {0,}, //Reserved[1] 73 2, //Revision 74 { 75 { 76 MAIN_BIOS_BLOCK_NUM, 77 FVB_MEDIA_BLOCK_SIZE, 78 } 79 } 80 }, 81 { 82 { 83 0, 84 0 85 } 86 } 87 }, 88 89 // 90 // Systen NvStorage FVB 91 // 92 { 93 NV_STORAGE_BASE_ADDRESS, 94 { 95 {0,}, //ZeroVector[16] 96 EFI_SYSTEM_NV_DATA_FV_GUID, 97 FVB_MEDIA_BLOCK_SIZE * SYSTEM_NV_BLOCK_NUM, 98 EFI_FVH_SIGNATURE, 99 0x0004feff, // check MdePkg/Include/Pi/PiFirmwareVolume.h for details on EFI_FVB_ATTRIBUTES_2 100 sizeof (EFI_FIRMWARE_VOLUME_HEADER) + sizeof (EFI_FV_BLOCK_MAP_ENTRY), 101 0, //CheckSum which will be calucated dynamically. 102 0, //ExtHeaderOffset 103 {0,}, //Reserved[1] 104 2, //Revision 105 { 106 { 107 SYSTEM_NV_BLOCK_NUM, 108 FVB_MEDIA_BLOCK_SIZE, 109 } 110 } 111 }, 112 { 113 { 114 0, 115 0 116 } 117 } 118 }, 119 120 // 121 // Recovery BIOS FVB 122 // 123 { 124 FV_RECOVERY_BASE_ADDRESS, 125 { 126 {0,}, //ZeroVector[16] 127 EFI_FIRMWARE_FILE_SYSTEM2_GUID, 128 FVB_MEDIA_BLOCK_SIZE * RECOVERY_BIOS_BLOCK_NUM, 129 EFI_FVH_SIGNATURE, 130 0x0004feff, // check MdePkg/Include/Pi/PiFirmwareVolume.h for details on EFI_FVB_ATTRIBUTES_2 131 sizeof (EFI_FIRMWARE_VOLUME_HEADER) + sizeof (EFI_FV_BLOCK_MAP_ENTRY), 132 0, //CheckSum which will be calucated dynamically. 133 0, //ExtHeaderOffset 134 {0,}, //Reserved[1] 135 2, //Revision 136 { 137 { 138 RECOVERY_BIOS_BLOCK_NUM, 139 FVB_MEDIA_BLOCK_SIZE, 140 } 141 } 142 }, 143 { 144 { 145 0, 146 0 147 } 148 } 149 } 150 }; 151 152 EFI_STATUS 153 GetFvbInfo ( 154 IN EFI_PHYSICAL_ADDRESS FvBaseAddress, 155 OUT EFI_FIRMWARE_VOLUME_HEADER **FvbInfo 156 ) 157 { 158 UINTN Index; 159 EFI_FIRMWARE_VOLUME_HEADER *FvHeader; 160 161 for (Index = 0; Index < sizeof (mPlatformFvbMediaInfo) / sizeof (EFI_FVB2_MEDIA_INFO); Index += 1) { 162 if (mPlatformFvbMediaInfo[Index].BaseAddress == FvBaseAddress) { 163 FvHeader = &mPlatformFvbMediaInfo[Index].FvbInfo; 164 165 // 166 // Update the checksum value of FV header. 167 // 168 FvHeader->Checksum = CalculateCheckSum16 ((UINT16 *) FvHeader, FvHeader->HeaderLength); 169 170 *FvbInfo = FvHeader; 171 172 DEBUG ((EFI_D_INFO, "\nBaseAddr: 0x%lx \n", FvBaseAddress)); 173 DEBUG ((EFI_D_INFO, "FvLength: 0x%lx \n", (*FvbInfo)->FvLength)); 174 DEBUG ((EFI_D_INFO, "HeaderLength: 0x%x \n", (*FvbInfo)->HeaderLength)); 175 DEBUG ((EFI_D_INFO, "FvBlockMap[0].NumBlocks: 0x%x \n", (*FvbInfo)->BlockMap[0].NumBlocks)); 176 DEBUG ((EFI_D_INFO, "FvBlockMap[0].BlockLength: 0x%x \n", (*FvbInfo)->BlockMap[0].Length)); 177 DEBUG ((EFI_D_INFO, "FvBlockMap[1].NumBlocks: 0x%x \n", (*FvbInfo)->BlockMap[1].NumBlocks)); 178 DEBUG ((EFI_D_INFO, "FvBlockMap[1].BlockLength: 0x%x \n\n", (*FvbInfo)->BlockMap[1].Length)); 179 180 return EFI_SUCCESS; 181 } 182 } 183 return EFI_NOT_FOUND; 184 } 185
