projects / mirror_edk2.git / blame
| Commit | Line | Data |
|---|---|---|
| 30fdf114 LG |
1 | /** @file\r |
| 2 | \r | |
| 3 | Fat file system structure and definition.\r | |
| 4 | \r | |
| f7496d71 LG |
5 | Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>\r |
| 6 | This program and the accompanying materials\r | |
| 7 | are licensed and made available under the terms and conditions of the BSD License\r | |
| 8 | which accompanies this distribution. The full text of the license may be found at\r | |
| 9 | http://opensource.org/licenses/bsd-license.php\r | |
| 10 | \r | |
| 11 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
| 12 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
| 30fdf114 LG |
13 | \r |
| 14 | --*/\r | |
| 15 | \r | |
| 16 | #ifndef _FAT_BPB_H_\r | |
| 17 | #define _FAT_BPB_H_\r | |
| 18 | \r | |
| 19 | #include "CommonLib.h"\r | |
| 20 | \r | |
| 21 | #pragma pack(1)\r | |
| 22 | \r | |
| 23 | typedef struct {\r | |
| 24 | //\r | |
| 25 | // Fat common field\r | |
| 26 | //\r | |
| 27 | UINT8 BS_jmpBoot[3];\r | |
| 28 | CHAR8 BS_OEMName[8];\r | |
| 29 | UINT16 BPB_BytsPerSec;\r | |
| 30 | UINT8 BPB_SecPerClus;\r | |
| 31 | UINT16 BPB_RsvdSecCnt;\r | |
| 32 | UINT8 BPB_NumFATs;\r | |
| 33 | UINT16 BPB_RootEntCnt;\r | |
| 34 | UINT16 BPB_TotSec16;\r | |
| 35 | UINT8 BPB_Media;\r | |
| 36 | UINT16 BPB_FATSz16;\r | |
| 37 | UINT16 BPB_SecPerTrk;\r | |
| 38 | UINT16 BPB_NumHeads;\r | |
| 39 | UINT32 BPB_HiddSec;\r | |
| 40 | UINT32 BPB_TotSec32;\r | |
| 41 | \r | |
| 42 | //\r | |
| 43 | // Fat12/16 specific field\r | |
| 44 | //\r | |
| 45 | UINT8 BS_DrvNum;\r | |
| 46 | UINT8 BS_Reserved1;\r | |
| 47 | UINT8 BS_BootSig;\r | |
| 48 | UINT32 BS_VolID;\r | |
| 49 | CHAR8 BS_VolLab[11];\r | |
| 50 | CHAR8 BS_FilSysType[8];\r | |
| 51 | \r | |
| 52 | //\r | |
| 53 | // Boot Code and Data\r | |
| 54 | //\r | |
| 55 | UINT8 Reserved[448];\r | |
| 56 | \r | |
| 57 | //\r | |
| 58 | // Fat common signature - 0xAA55\r | |
| 59 | //\r | |
| 60 | UINT16 Signature;\r | |
| 61 | } FAT12_16_BPB_STRUCT;\r | |
| 62 | \r | |
| 63 | typedef struct {\r | |
| 64 | //\r | |
| 65 | // Fat common field\r | |
| 66 | //\r | |
| 67 | UINT8 BS_jmpBoot[3];\r | |
| 68 | CHAR8 BS_OEMName[8];\r | |
| 69 | UINT16 BPB_BytsPerSec;\r | |
| 70 | UINT8 BPB_SecPerClus;\r | |
| 71 | UINT16 BPB_RsvdSecCnt;\r | |
| 72 | UINT8 BPB_NumFATs;\r | |
| 73 | UINT16 BPB_RootEntCnt;\r | |
| 74 | UINT16 BPB_TotSec16;\r | |
| 75 | UINT8 BPB_Media;\r | |
| 76 | UINT16 BPB_FATSz16;\r | |
| 77 | UINT16 BPB_SecPerTrk;\r | |
| 78 | UINT16 BPB_NumHeads;\r | |
| 79 | UINT32 BPB_HiddSec;\r | |
| 80 | UINT32 BPB_TotSec32;\r | |
| 81 | \r | |
| 82 | //\r | |
| 83 | // Fat32 specific field\r | |
| 84 | //\r | |
| 85 | UINT32 BPB_FATSz32;\r | |
| 86 | UINT16 BPB_ExtFlags;\r | |
| 87 | UINT16 BPB_FSVer;\r | |
| 88 | UINT32 BPB_RootClus;\r | |
| 89 | UINT16 BPB_FSInfo;\r | |
| 90 | UINT16 BPB_BkBootSec;\r | |
| 91 | UINT8 BPB_Reserved[12];\r | |
| 92 | UINT8 BS_DrvNum;\r | |
| 93 | UINT8 BS_Reserved1;\r | |
| 94 | UINT8 BS_BootSig;\r | |
| 95 | UINT32 BS_VolID;\r | |
| 96 | CHAR8 BS_VolLab[11];\r | |
| 97 | CHAR8 BS_FilSysType[8];\r | |
| 98 | \r | |
| 99 | //\r | |
| 100 | // Boot Code and Data\r | |
| 101 | //\r | |
| 102 | UINT8 Reserved[420];\r | |
| 103 | \r | |
| 104 | //\r | |
| 105 | // Fat common signature - 0xAA55\r | |
| 106 | //\r | |
| 107 | UINT16 Signature;\r | |
| 108 | } FAT32_BPB_STRUCT;\r | |
| 109 | \r | |
| 110 | typedef union {\r | |
| 111 | FAT12_16_BPB_STRUCT Fat12_16;\r | |
| 112 | FAT32_BPB_STRUCT Fat32;\r | |
| 113 | } FAT_BPB_STRUCT;\r | |
| 114 | \r | |
| 115 | typedef enum {\r | |
| 116 | FatTypeUnknown,\r | |
| 117 | FatTypeFat12,\r | |
| 118 | FatTypeFat16,\r | |
| 119 | FatTypeFat32,\r | |
| 120 | FatTypeMax\r | |
| 121 | } FAT_TYPE;\r | |
| 122 | \r | |
| 123 | typedef struct {\r | |
| 124 | CHAR8 DIR_Name[11];\r | |
| 125 | UINT8 DIR_Attr;\r | |
| 126 | UINT8 DIR_NTRes;\r | |
| 127 | UINT8 DIR_CrtTimeTenth;\r | |
| 128 | UINT16 DIR_CrtTime;\r | |
| 129 | UINT16 DIR_CrtDate;\r | |
| 130 | UINT16 DIR_LstAccDate;\r | |
| 131 | UINT16 DIR_FstClusHI;\r | |
| 132 | UINT16 DIR_WrtTime;\r | |
| 133 | UINT16 DIR_WrtDate;\r | |
| 134 | UINT16 DIR_FstClusLO;\r | |
| 135 | UINT32 DIR_FileSize;\r | |
| 136 | } FAT_DIRECTORY_ENTRY;\r | |
| 137 | \r | |
| 138 | #pragma pack()\r | |
| 139 | \r | |
| 140 | #define FAT_MAX_FAT12_CLUSTER 0xFF5\r | |
| 141 | #define FAT_MAX_FAT16_CLUSTER 0xFFF5\r | |
| 142 | \r | |
| 143 | #define FAT_BS_SIGNATURE 0xAA55\r | |
| 144 | #define FAT_BS_BOOTSIG 0x29\r | |
| 145 | #define FAT_BS_JMP1 0xEB\r | |
| 146 | #define FAT_BS_JMP2 0xE9\r | |
| 147 | #define FAT_FILSYSTYPE "FAT "\r | |
| 148 | #define FAT12_FILSYSTYPE "FAT12 "\r | |
| 149 | #define FAT16_FILSYSTYPE "FAT16 "\r | |
| 150 | #define FAT32_FILSYSTYPE "FAT32 "\r | |
| 151 | \r | |
| 152 | #endif\r |