| Greg Hartman | 76d05dc | 2016-11-23 15:51:27 -0800 | [diff] [blame] | 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 | |