projects / mirror_edk2.git / blame
| Commit | Line | Data |
|---|---|---|
| 2f4dfa84 JJ |
1 | /** @file\r |
| 2 | FAT format data structures\r | |
| 3 | \r | |
| 4c5ee6a6 | 4 | Copyright (c) 2006 - 2017, Intel Corporation. All rights reserved.<BR>\r |
| 2f4dfa84 | 5 | \r |
| eb6cb4ce | 6 | SPDX-License-Identifier: BSD-2-Clause-Patent\r |
| 2f4dfa84 JJ |
7 | \r |
| 8 | **/\r | |
| 9 | \r | |
| 10 | #ifndef _FAT_FMT_H_\r | |
| 11 | #define _FAT_FMT_H_\r | |
| 12 | \r | |
| 13 | //\r | |
| 14 | // Definitions\r | |
| 15 | //\r | |
| 16 | #define FAT_ATTR_READ_ONLY 0x01\r | |
| 17 | #define FAT_ATTR_HIDDEN 0x02\r | |
| 18 | #define FAT_ATTR_SYSTEM 0x04\r | |
| 19 | #define FAT_ATTR_VOLUME_ID 0x08\r | |
| 20 | #define FAT_ATTR_DIRECTORY 0x10\r | |
| 21 | #define FAT_ATTR_ARCHIVE 0x20\r | |
| 22 | #define FAT_ATTR_LFN (FAT_ATTR_READ_ONLY | FAT_ATTR_HIDDEN | FAT_ATTR_SYSTEM | FAT_ATTR_VOLUME_ID)\r | |
| 23 | \r | |
| 4c5ee6a6 | 24 | #define FAT_CLUSTER_SPECIAL ((MAX_UINT32 &~0xF) | 0x7)\r |
| 2f4dfa84 JJ |
25 | #define FAT_CLUSTER_FREE 0\r |
| 26 | #define FAT_CLUSTER_RESERVED (FAT_CLUSTER_SPECIAL)\r | |
| 27 | #define FAT_CLUSTER_BAD (FAT_CLUSTER_SPECIAL)\r | |
| 28 | #define FAT_CLUSTER_LAST (-1)\r | |
| 29 | \r | |
| 30 | #define DELETE_ENTRY_MARK 0xE5\r | |
| 31 | #define EMPTY_ENTRY_MARK 0x00\r | |
| 32 | \r | |
| 33 | #define FAT_CLUSTER_FUNCTIONAL(Cluster) (((Cluster) == 0) || ((Cluster) >= FAT_CLUSTER_SPECIAL))\r | |
| 34 | #define FAT_CLUSTER_END_OF_CHAIN(Cluster) ((Cluster) > (FAT_CLUSTER_SPECIAL))\r | |
| 35 | \r | |
| 36 | //\r | |
| 37 | // Directory Entry\r | |
| 38 | //\r | |
| 39 | #pragma pack(1)\r | |
| 40 | \r | |
| 41 | typedef struct {\r | |
| 42 | UINT16 Day : 5;\r | |
| 43 | UINT16 Month : 4;\r | |
| 44 | UINT16 Year : 7; // From 1980\r | |
| 45 | } FAT_DATE;\r | |
| 46 | \r | |
| 47 | typedef struct {\r | |
| 48 | UINT16 DoubleSecond : 5;\r | |
| 49 | UINT16 Minute : 6;\r | |
| 50 | UINT16 Hour : 5;\r | |
| 51 | } FAT_TIME;\r | |
| 52 | \r | |
| 53 | typedef struct {\r | |
| 54 | FAT_TIME Time;\r | |
| 55 | FAT_DATE Date;\r | |
| 56 | } FAT_DATE_TIME;\r | |
| 57 | \r | |
| 58 | typedef struct {\r | |
| 59 | CHAR8 FileName[11]; // 8.3 filename\r | |
| 60 | UINT8 Attributes;\r | |
| 61 | UINT8 CaseFlag;\r | |
| 62 | UINT8 CreateMillisecond; // (creation milliseconds - ignored)\r | |
| 63 | FAT_DATE_TIME FileCreateTime;\r | |
| 64 | FAT_DATE FileLastAccess;\r | |
| 65 | UINT16 FileClusterHigh; // >= FAT32\r | |
| 66 | FAT_DATE_TIME FileModificationTime;\r | |
| 67 | UINT16 FileCluster;\r | |
| 68 | UINT32 FileSize;\r | |
| 69 | } FAT_DIRECTORY_ENTRY;\r | |
| 70 | \r | |
| 71 | #pragma pack()\r | |
| 72 | //\r | |
| 73 | // Boot Sector\r | |
| 74 | //\r | |
| 75 | #pragma pack(1)\r | |
| 76 | \r | |
| 77 | typedef struct {\r | |
| 78 | \r | |
| 79 | UINT8 Ia32Jump[3];\r | |
| 80 | CHAR8 OemId[8];\r | |
| 81 | \r | |
| 82 | UINT16 SectorSize;\r | |
| 83 | UINT8 SectorsPerCluster;\r | |
| 84 | UINT16 ReservedSectors;\r | |
| 85 | UINT8 NoFats;\r | |
| 86 | UINT16 RootEntries; // < FAT32, root dir is fixed size\r | |
| 87 | UINT16 Sectors;\r | |
| 88 | UINT8 Media; // (ignored)\r | |
| 89 | UINT16 SectorsPerFat; // < FAT32\r | |
| 90 | UINT16 SectorsPerTrack; // (ignored)\r | |
| 91 | UINT16 Heads; // (ignored)\r | |
| 92 | UINT32 HiddenSectors; // (ignored)\r | |
| 93 | UINT32 LargeSectors; // => FAT32\r | |
| 94 | UINT8 PhysicalDriveNumber; // (ignored)\r | |
| 95 | UINT8 CurrentHead; // holds boot_sector_dirty bit\r | |
| 96 | UINT8 Signature; // (ignored)\r | |
| 97 | CHAR8 Id[4];\r | |
| 98 | CHAR8 FatLabel[11];\r | |
| 99 | CHAR8 SystemId[8];\r | |
| 100 | \r | |
| 101 | } PEI_FAT_BOOT_SECTOR;\r | |
| 102 | \r | |
| 103 | typedef struct {\r | |
| 104 | \r | |
| 105 | UINT8 Ia32Jump[3];\r | |
| 106 | CHAR8 OemId[8];\r | |
| 107 | \r | |
| 108 | UINT16 SectorSize;\r | |
| 109 | UINT8 SectorsPerCluster;\r | |
| 110 | UINT16 ReservedSectors;\r | |
| 111 | UINT8 NoFats;\r | |
| 112 | UINT16 RootEntries; // < FAT32, root dir is fixed size\r | |
| 113 | UINT16 Sectors;\r | |
| 114 | UINT8 Media; // (ignored)\r | |
| 115 | UINT16 SectorsPerFat; // < FAT32\r | |
| 116 | UINT16 SectorsPerTrack; // (ignored)\r | |
| 117 | UINT16 Heads; // (ignored)\r | |
| 118 | UINT32 HiddenSectors; // (ignored)\r | |
| 119 | UINT32 LargeSectors; // Used if Sectors==0\r | |
| 120 | UINT32 LargeSectorsPerFat; // FAT32\r | |
| 121 | UINT16 ExtendedFlags; // FAT32 (ignored)\r | |
| 122 | UINT16 FsVersion; // FAT32 (ignored)\r | |
| 123 | UINT32 RootDirFirstCluster; // FAT32\r | |
| 124 | UINT16 FsInfoSector; // FAT32\r | |
| 125 | UINT16 BackupBootSector; // FAT32\r | |
| 126 | UINT8 Reserved[12]; // FAT32 (ignored)\r | |
| 127 | UINT8 PhysicalDriveNumber; // (ignored)\r | |
| 128 | UINT8 CurrentHead; // holds boot_sector_dirty bit\r | |
| 129 | UINT8 Signature; // (ignored)\r | |
| 130 | CHAR8 Id[4];\r | |
| 131 | CHAR8 FatLabel[11];\r | |
| 132 | CHAR8 SystemId[8];\r | |
| 133 | \r | |
| 134 | } PEI_FAT_BOOT_SECTOR_EX;\r | |
| 135 | \r | |
| 136 | #pragma pack()\r | |
| 137 | \r | |
| 138 | #endif\r |