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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 2726 | vana | 1 | #ifndef _EFI_FS_H |
| 2 | #define _EFI_FS_H |
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| 3 | |||
| 4 | /*++ |
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| 5 | |||
| 6 | Copyright (c) 1998 Intel Corporation |
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| 7 | |||
| 8 | Module Name: |
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| 9 | |||
| 10 | efifs.h |
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| 11 | |||
| 12 | Abstract: |
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| 13 | |||
| 14 | EFI File System structures |
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| 15 | |||
| 16 | |||
| 17 | |||
| 18 | Revision History |
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| 19 | |||
| 20 | --*/ |
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| 21 | |||
| 22 | |||
| 23 | // |
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| 24 | // EFI Partition header (normaly starts in LBA 1) |
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| 25 | // |
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| 26 | |||
| 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 | |||
| 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 | |||
| 44 | |||
| 45 | // |
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| 46 | // File header |
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| 47 | // |
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| 48 | |||
| 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 | |||
| 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 | |||
| 66 | |||
| 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 | |||
| 72 | #define EFI_FILE_LBAL(a) ((EFI_LBAL *) (((CHAR8 *) (a)) + (a)->LBALOffset)) |
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| 73 | |||
| 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 | |||
| 78 | |||
| 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 | |||
| 84 | #define EFI_LBAL_SIGNATURE 0x4c41424c20494249 |
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| 85 | #define EFI_LBAL_REVISION 0x00010000 |
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| 86 | |||
| 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 | |||
| 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 | |||
| 100 | // |
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| 101 | // Logical Block run-length |
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| 102 | // |
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| 103 | |||
| 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 | |||
| 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 | |||
| 113 | #define EFI_LBAL_RL(a) ((EFI_RL*) (((CHAR8 *) (a)) + (a)->Hdr.HeaderSize)) |
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| 114 | |||
| 115 | #endif |
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| 116 |