mirror of
https://github.com/acidanthera/audk.git
synced 2025-11-04 13:35:48 +01:00
40d841f6a8
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@10502 6f19259b-4bc3-4df7-8a09-765794883524
153 lines
4.1 KiB
C
153 lines
4.1 KiB
C
/** @file
|
|
|
|
Fat file system structure and definition.
|
|
|
|
Copyright (c) 2006 - 2008, Intel Corporation. All rights reserved.<BR>
|
|
This program and the accompanying materials
|
|
are licensed and made available under the terms and conditions of the BSD License
|
|
which accompanies this distribution. The full text of the license may be found at
|
|
http://opensource.org/licenses/bsd-license.php
|
|
|
|
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
|
|
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
|
|
|
|
--*/
|
|
|
|
#ifndef _FAT_BPB_H_
|
|
#define _FAT_BPB_H_
|
|
|
|
#include "CommonLib.h"
|
|
|
|
#pragma pack(1)
|
|
|
|
typedef struct {
|
|
//
|
|
// Fat common field
|
|
//
|
|
UINT8 BS_jmpBoot[3];
|
|
CHAR8 BS_OEMName[8];
|
|
UINT16 BPB_BytsPerSec;
|
|
UINT8 BPB_SecPerClus;
|
|
UINT16 BPB_RsvdSecCnt;
|
|
UINT8 BPB_NumFATs;
|
|
UINT16 BPB_RootEntCnt;
|
|
UINT16 BPB_TotSec16;
|
|
UINT8 BPB_Media;
|
|
UINT16 BPB_FATSz16;
|
|
UINT16 BPB_SecPerTrk;
|
|
UINT16 BPB_NumHeads;
|
|
UINT32 BPB_HiddSec;
|
|
UINT32 BPB_TotSec32;
|
|
|
|
//
|
|
// Fat12/16 specific field
|
|
//
|
|
UINT8 BS_DrvNum;
|
|
UINT8 BS_Reserved1;
|
|
UINT8 BS_BootSig;
|
|
UINT32 BS_VolID;
|
|
CHAR8 BS_VolLab[11];
|
|
CHAR8 BS_FilSysType[8];
|
|
|
|
//
|
|
// Boot Code and Data
|
|
//
|
|
UINT8 Reserved[448];
|
|
|
|
//
|
|
// Fat common signature - 0xAA55
|
|
//
|
|
UINT16 Signature;
|
|
} FAT12_16_BPB_STRUCT;
|
|
|
|
typedef struct {
|
|
//
|
|
// Fat common field
|
|
//
|
|
UINT8 BS_jmpBoot[3];
|
|
CHAR8 BS_OEMName[8];
|
|
UINT16 BPB_BytsPerSec;
|
|
UINT8 BPB_SecPerClus;
|
|
UINT16 BPB_RsvdSecCnt;
|
|
UINT8 BPB_NumFATs;
|
|
UINT16 BPB_RootEntCnt;
|
|
UINT16 BPB_TotSec16;
|
|
UINT8 BPB_Media;
|
|
UINT16 BPB_FATSz16;
|
|
UINT16 BPB_SecPerTrk;
|
|
UINT16 BPB_NumHeads;
|
|
UINT32 BPB_HiddSec;
|
|
UINT32 BPB_TotSec32;
|
|
|
|
//
|
|
// Fat32 specific field
|
|
//
|
|
UINT32 BPB_FATSz32;
|
|
UINT16 BPB_ExtFlags;
|
|
UINT16 BPB_FSVer;
|
|
UINT32 BPB_RootClus;
|
|
UINT16 BPB_FSInfo;
|
|
UINT16 BPB_BkBootSec;
|
|
UINT8 BPB_Reserved[12];
|
|
UINT8 BS_DrvNum;
|
|
UINT8 BS_Reserved1;
|
|
UINT8 BS_BootSig;
|
|
UINT32 BS_VolID;
|
|
CHAR8 BS_VolLab[11];
|
|
CHAR8 BS_FilSysType[8];
|
|
|
|
//
|
|
// Boot Code and Data
|
|
//
|
|
UINT8 Reserved[420];
|
|
|
|
//
|
|
// Fat common signature - 0xAA55
|
|
//
|
|
UINT16 Signature;
|
|
} FAT32_BPB_STRUCT;
|
|
|
|
typedef union {
|
|
FAT12_16_BPB_STRUCT Fat12_16;
|
|
FAT32_BPB_STRUCT Fat32;
|
|
} FAT_BPB_STRUCT;
|
|
|
|
typedef enum {
|
|
FatTypeUnknown,
|
|
FatTypeFat12,
|
|
FatTypeFat16,
|
|
FatTypeFat32,
|
|
FatTypeMax
|
|
} FAT_TYPE;
|
|
|
|
typedef struct {
|
|
CHAR8 DIR_Name[11];
|
|
UINT8 DIR_Attr;
|
|
UINT8 DIR_NTRes;
|
|
UINT8 DIR_CrtTimeTenth;
|
|
UINT16 DIR_CrtTime;
|
|
UINT16 DIR_CrtDate;
|
|
UINT16 DIR_LstAccDate;
|
|
UINT16 DIR_FstClusHI;
|
|
UINT16 DIR_WrtTime;
|
|
UINT16 DIR_WrtDate;
|
|
UINT16 DIR_FstClusLO;
|
|
UINT32 DIR_FileSize;
|
|
} FAT_DIRECTORY_ENTRY;
|
|
|
|
#pragma pack()
|
|
|
|
#define FAT_MAX_FAT12_CLUSTER 0xFF5
|
|
#define FAT_MAX_FAT16_CLUSTER 0xFFF5
|
|
|
|
#define FAT_BS_SIGNATURE 0xAA55
|
|
#define FAT_BS_BOOTSIG 0x29
|
|
#define FAT_BS_JMP1 0xEB
|
|
#define FAT_BS_JMP2 0xE9
|
|
#define FAT_FILSYSTYPE "FAT "
|
|
#define FAT12_FILSYSTYPE "FAT12 "
|
|
#define FAT16_FILSYSTYPE "FAT16 "
|
|
#define FAT32_FILSYSTYPE "FAT32 "
|
|
|
|
#endif
|