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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 |