diff options
Diffstat (limited to 'BaseTools/Source/C/GnuGenBootSector/FatFormat.h')
| -rw-r--r-- | BaseTools/Source/C/GnuGenBootSector/FatFormat.h | 152 |
1 files changed, 152 insertions, 0 deletions
diff --git a/BaseTools/Source/C/GnuGenBootSector/FatFormat.h b/BaseTools/Source/C/GnuGenBootSector/FatFormat.h new file mode 100644 index 0000000000..1f77e879b3 --- /dev/null +++ b/BaseTools/Source/C/GnuGenBootSector/FatFormat.h @@ -0,0 +1,152 @@ +/** @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
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