[7208b6c] | 1 | #ifndef _EFI_FS_H
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| 2 | #define _EFI_FS_H
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| 3 |
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| 4 | /*++
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| 5 |
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| 6 | Copyright (c) 1998 Intel Corporation
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| 7 |
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| 8 | Module Name:
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| 9 |
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| 10 | efifs.h
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| 11 |
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| 12 | Abstract:
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| 13 |
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| 14 | EFI File System structures
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| 15 |
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| 16 |
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| 17 |
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| 18 | Revision History
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| 19 |
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| 20 | --*/
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| 21 |
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| 22 |
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| 23 | //
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| 24 | // EFI Partition header (normaly starts in LBA 1)
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| 25 | //
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| 26 |
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| 27 | #define EFI_PARTITION_SIGNATURE 0x5053595320494249
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| 28 | #define EFI_PARTITION_REVISION 0x00010001
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| 29 | #define MIN_EFI_PARTITION_BLOCK_SIZE 512
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| 30 | #define EFI_PARTITION_LBA 1
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| 31 |
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| 32 | typedef struct _EFI_PARTITION_HEADER {
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| 33 | EFI_TABLE_HEADER Hdr;
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| 34 | UINT32 DirectoryAllocationNumber;
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| 35 | UINT32 BlockSize;
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| 36 | EFI_LBA FirstUsableLba;
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| 37 | EFI_LBA LastUsableLba;
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| 38 | EFI_LBA UnusableSpace;
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| 39 | EFI_LBA FreeSpace;
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| 40 | EFI_LBA RootFile;
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| 41 | EFI_LBA SecutiryFile;
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| 42 | } EFI_PARTITION_HEADER;
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| 43 |
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| 44 |
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| 45 | //
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| 46 | // File header
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| 47 | //
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| 48 |
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| 49 | #define EFI_FILE_HEADER_SIGNATURE 0x454c494620494249
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| 50 | #define EFI_FILE_HEADER_REVISION 0x00010000
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| 51 | #define EFI_FILE_STRING_SIZE 260
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| 52 |
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| 53 | typedef struct _EFI_FILE_HEADER {
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| 54 | EFI_TABLE_HEADER Hdr;
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| 55 | UINT32 Class;
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| 56 | UINT32 LBALOffset;
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| 57 | EFI_LBA Parent;
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| 58 | UINT64 FileSize;
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| 59 | UINT64 FileAttributes;
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| 60 | EFI_TIME FileCreateTime;
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| 61 | EFI_TIME FileModificationTime;
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| 62 | EFI_GUID VendorGuid;
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| 63 | CHAR16 FileString[EFI_FILE_STRING_SIZE];
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| 64 | } EFI_FILE_HEADER;
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| 65 |
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| 66 |
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| 67 | //
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| 68 | // Return the file's first LBAL which is in the same
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| 69 | // logical block as the file header
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| 70 | //
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| 71 |
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| 72 | #define EFI_FILE_LBAL(a) ((EFI_LBAL *) (((CHAR8 *) (a)) + (a)->LBALOffset))
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| 73 |
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| 74 | #define EFI_FILE_CLASS_FREE_SPACE 1
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| 75 | #define EFI_FILE_CLASS_EMPTY 2
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| 76 | #define EFI_FILE_CLASS_NORMAL 3
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| 77 |
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| 78 |
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| 79 | //
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| 80 | // Logical Block Address List - the fundemental block
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| 81 | // description structure
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| 82 | //
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| 83 |
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| 84 | #define EFI_LBAL_SIGNATURE 0x4c41424c20494249
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| 85 | #define EFI_LBAL_REVISION 0x00010000
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| 86 |
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| 87 | typedef struct _EFI_LBAL {
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| 88 | EFI_TABLE_HEADER Hdr;
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| 89 | UINT32 Class;
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| 90 | EFI_LBA Parent;
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| 91 | EFI_LBA Next;
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| 92 | UINT32 ArraySize;
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| 93 | UINT32 ArrayCount;
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| 94 | } EFI_LBAL;
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| 95 |
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| 96 | // Array size
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| 97 | #define EFI_LBAL_ARRAY_SIZE(lbal,offs,blks) \
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| 98 | (((blks) - (offs) - (lbal)->Hdr.HeaderSize) / sizeof(EFI_RL))
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| 99 |
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| 100 | //
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| 101 | // Logical Block run-length
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| 102 | //
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| 103 |
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| 104 | typedef struct {
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| 105 | EFI_LBA Start;
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| 106 | UINT64 Length;
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| 107 | } EFI_RL;
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| 108 |
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| 109 | //
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| 110 | // Return the run-length structure from an LBAL header
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| 111 | //
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| 112 |
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| 113 | #define EFI_LBAL_RL(a) ((EFI_RL*) (((CHAR8 *) (a)) + (a)->Hdr.HeaderSize))
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| 114 |
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| 115 | #endif
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| 116 |
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