1 #ifndef _EFI_FS_H 2 #define _EFI_FS_H 3 4 /*++ 5 6 Copyright (c) 1998 Intel Corporation 7 8 Module Name: 9 10 efifs.h 11 12 Abstract: 13 14 EFI File System structures 15 16 17 18 Revision History 19 20 --*/ 21 22 23 // 24 // EFI Partition header (normaly starts in LBA 1) 25 // 26 27 #define EFI_PARTITION_SIGNATURE 0x5053595320494249 28 #define EFI_PARTITION_REVISION 0x00010001 29 #define MIN_EFI_PARTITION_BLOCK_SIZE 512 30 #define EFI_PARTITION_LBA 1 31 32 typedef struct _EFI_PARTITION_HEADER { 33 EFI_TABLE_HEADER Hdr; 34 UINT32 DirectoryAllocationNumber; 35 UINT32 BlockSize; 36 EFI_LBA FirstUsableLba; 37 EFI_LBA LastUsableLba; 38 EFI_LBA UnusableSpace; 39 EFI_LBA FreeSpace; 40 EFI_LBA RootFile; 41 EFI_LBA SecutiryFile; 42 } EFI_PARTITION_HEADER; 43 44 45 // 46 // File header 47 // 48 49 #define EFI_FILE_HEADER_SIGNATURE 0x454c494620494249 50 #define EFI_FILE_HEADER_REVISION 0x00010000 51 #define EFI_FILE_STRING_SIZE 260 52 53 typedef struct _EFI_FILE_HEADER { 54 EFI_TABLE_HEADER Hdr; 55 UINT32 Class; 56 UINT32 LBALOffset; 57 EFI_LBA Parent; 58 UINT64 FileSize; 59 UINT64 FileAttributes; 60 EFI_TIME FileCreateTime; 61 EFI_TIME FileModificationTime; 62 EFI_GUID VendorGuid; 63 CHAR16 FileString[EFI_FILE_STRING_SIZE]; 64 } EFI_FILE_HEADER; 65 66 67 // 68 // Return the file's first LBAL which is in the same 69 // logical block as the file header 70 // 71 72 #define EFI_FILE_LBAL(a) ((EFI_LBAL *) (((CHAR8 *) (a)) + (a)->LBALOffset)) 73 74 #define EFI_FILE_CLASS_FREE_SPACE 1 75 #define EFI_FILE_CLASS_EMPTY 2 76 #define EFI_FILE_CLASS_NORMAL 3 77 78 79 // 80 // Logical Block Address List - the fundemental block 81 // description structure 82 // 83 84 #define EFI_LBAL_SIGNATURE 0x4c41424c20494249 85 #define EFI_LBAL_REVISION 0x00010000 86 87 typedef struct _EFI_LBAL { 88 EFI_TABLE_HEADER Hdr; 89 UINT32 Class; 90 EFI_LBA Parent; 91 EFI_LBA Next; 92 UINT32 ArraySize; 93 UINT32 ArrayCount; 94 } EFI_LBAL; 95 96 // Array size 97 #define EFI_LBAL_ARRAY_SIZE(lbal,offs,blks) \ 98 (((blks) - (offs) - (lbal)->Hdr.HeaderSize) / sizeof(EFI_RL)) 99 100 // 101 // Logical Block run-length 102 // 103 104 typedef struct { 105 EFI_LBA Start; 106 UINT64 Length; 107 } EFI_RL; 108 109 // 110 // Return the run-length structure from an LBAL header 111 // 112 113 #define EFI_LBAL_RL(a) ((EFI_RL*) (((CHAR8 *) (a)) + (a)->Hdr.HeaderSize)) 114 115 #endif 116 117
