reactos/boot/freeldr/freeldr/include/disk.h

   1 /*
   2  *  FreeLoader
   3  *  Copyright (C) 1998-2003  Brian Palmer  <brianp@sginet.com>
   4  *
   5  *  This program is free software; you can redistribute it and/or modify
   6  *  it under the terms of the GNU General Public License as published by
   7  *  the Free Software Foundation; either version 2 of the License, or
   8  *  (at your option) any later version.
   9  *
  10  *  This program is distributed in the hope that it will be useful,
  11  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  *  GNU General Public License for more details.
  14  *
  15  *  You should have received a copy of the GNU General Public License along
  16  *  with this program; if not, write to the Free Software Foundation, Inc.,
  17  *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  18  */
  19
  20 #ifndef __DISK_H
  21 #define __DISK_H
  22
  23 #include <reactos/rosioctl.h>
  24
  25 typedef struct _GEOMETRY
  26 {
  27         ULONG           Cylinders;                                              // Number of cylinders on the disk
  28         ULONG           Heads;                                                  // Number of heads on the disk
  29         ULONG           Sectors;                                                // Number of sectors per track
  30         ULONG           BytesPerSector;                                 // Number of bytes per sector
  31
  32 } GEOMETRY, *PGEOMETRY;
  33
  34 //
  35 // Extended disk geometry (Int13 / ah=48h)
  36 //
  37 #include <pshpack1.h>
  38 typedef struct _EXTENDED_GEOMETRY
  39 {
  40         USHORT          Size;
  41         USHORT          Flags;
  42         ULONG           Cylinders;
  43         ULONG           Heads;
  44         ULONG           SectorsPerTrack;
  45         ULONGLONG               Sectors;
  46         USHORT          BytesPerSector;
  47         ULONG           PDPTE;
  48 } EXTENDED_GEOMETRY, *PEXTENDED_GEOMETRY;
  49
  50 //
  51 // Define the structure of a partition table entry
  52 //
  53 typedef struct _PARTITION_TABLE_ENTRY
  54 {
  55         UCHAR           BootIndicator;                                  // 0x00 - non-bootable partition, 0x80 - bootable partition (one partition only)
  56         UCHAR           StartHead;                                              // Beginning head number
  57         UCHAR           StartSector;                                    // Beginning sector (2 high bits of cylinder #)
  58         UCHAR           StartCylinder;                                  // Beginning cylinder# (low order bits of cylinder #)
  59         UCHAR           SystemIndicator;                                // System indicator
  60         UCHAR           EndHead;                                                // Ending head number
  61         UCHAR           EndSector;                                              // Ending sector (2 high bits of cylinder #)
  62         UCHAR           EndCylinder;                                    // Ending cylinder# (low order bits of cylinder #)
  63         ULONG           SectorCountBeforePartition;             // Number of sectors preceding the partition
  64         ULONG           PartitionSectorCount;                   // Number of sectors in the partition
  65
  66 } PARTITION_TABLE_ENTRY, *PPARTITION_TABLE_ENTRY;
  67
  68 //
  69 // Define the structure of the master boot record
  70 //
  71 typedef struct _MASTER_BOOT_RECORD
  72 {
  73         UCHAR                   MasterBootRecordCodeAndData[0x1b8];     /* 0x000 */
  74         ULONG                   Signature;                              /* 0x1B8 */
  75         USHORT                  Reserved;                               /* 0x1BC */
  76         PARTITION_TABLE_ENTRY   PartitionTable[4];                      /* 0x1BE */
  77         USHORT                  MasterBootRecordMagic;                  /* 0x1FE */
  78
  79 } MASTER_BOOT_RECORD, *PMASTER_BOOT_RECORD;
  80 #include <poppack.h>
  81
  82 //
  83 // Partition type defines (of PSDK)
  84 //
  85 #define PARTITION_ENTRY_UNUSED          0x00      // Entry unused
  86 #define PARTITION_FAT_12                0x01      // 12-bit FAT entries
  87 #define PARTITION_XENIX_1               0x02      // Xenix
  88 #define PARTITION_XENIX_2               0x03      // Xenix
  89 #define PARTITION_FAT_16                0x04      // 16-bit FAT entries
  90 #define PARTITION_EXTENDED              0x05      // Extended partition entry
  91 #define PARTITION_HUGE                  0x06      // Huge partition MS-DOS V4
  92 #define PARTITION_IFS                   0x07      // IFS Partition
  93 #define PARTITION_FAT32                 0x0B      // FAT32
  94 #define PARTITION_FAT32_XINT13          0x0C      // FAT32 using extended int13 services
  95 #define PARTITION_XINT13                0x0E      // Win95 partition using extended int13 services
  96 #define PARTITION_XINT13_EXTENDED       0x0F      // Same as type 5 but uses extended int13 services
  97 #define PARTITION_NTFS                  0x17      // NTFS
  98 #define PARTITION_PREP                  0x41      // PowerPC Reference Platform (PReP) Boot Partition
  99 #define PARTITION_LDM                   0x42      // Logical Disk Manager partition
 100 #define PARTITION_UNIX                  0x63      // Unix
 101
 102 ///////////////////////////////////////////////////////////////////////////////////////
 103 //
 104 // i386 BIOS Disk Functions (i386disk.c)
 105 //
 106 ///////////////////////////////////////////////////////////////////////////////////////
 107 #if defined(__i386__) || defined(_M_AMD64)
 108
 109 BOOLEAN DiskResetController(ULONG DriveNumber);
 110 BOOLEAN DiskInt13ExtensionsSupported(ULONG DriveNumber);
 111 //VOID  DiskStopFloppyMotor(VOID);
 112 BOOLEAN DiskGetExtendedDriveParameters(ULONG DriveNumber, PVOID Buffer, USHORT BufferSize);
 113
 114 #endif // defined __i386__ || defined(_M_AMD64)
 115
 116 ///////////////////////////////////////////////////////////////////////////////////////
 117 //
 118 // FreeLoader Disk Functions
 119 //
 120 ///////////////////////////////////////////////////////////////////////////////////////
 121 VOID    DiskReportError (BOOLEAN bError);
 122 VOID    DiskError(PCSTR ErrorString, ULONG ErrorCode);
 123 PCSTR   DiskGetErrorCodeString(ULONG ErrorCode);
 124 BOOLEAN DiskReadLogicalSectors(ULONG DriveNumber, ULONGLONG SectorNumber, ULONG SectorCount, PVOID Buffer); // Implemented in i386disk.c
 125 BOOLEAN DiskIsDriveRemovable(ULONG DriveNumber);
 126 VOID    DiskStopFloppyMotor(VOID);      // Implemented in i386disk.c
 127 extern ULONG BootDrive;
 128 extern ULONG BootPartition;
 129
 130 BOOLEAN DiskGetBootPath(char *BootPath, unsigned Size);
 131 BOOLEAN DiskNormalizeSystemPath(char *SystemPath, unsigned Size);
 132
 133
 134 ///////////////////////////////////////////////////////////////////////////////////////
 135 //
 136 // Fixed Disk Partition Management Functions
 137 //
 138 ///////////////////////////////////////////////////////////////////////////////////////
 139 BOOLEAN DiskGetActivePartitionEntry(ULONG DriveNumber, PPARTITION_TABLE_ENTRY PartitionTableEntry, ULONG *ActivePartition);
 140 BOOLEAN DiskGetPartitionEntry(ULONG DriveNumber, ULONG PartitionNumber, PPARTITION_TABLE_ENTRY PartitionTableEntry);
 141 BOOLEAN DiskGetFirstPartitionEntry(PMASTER_BOOT_RECORD MasterBootRecord, PPARTITION_TABLE_ENTRY PartitionTableEntry);
 142 BOOLEAN DiskGetFirstExtendedPartitionEntry(PMASTER_BOOT_RECORD MasterBootRecord, PPARTITION_TABLE_ENTRY PartitionTableEntry);
 143 BOOLEAN DiskReadBootRecord(ULONG DriveNumber, ULONGLONG LogicalSectorNumber, PMASTER_BOOT_RECORD BootRecord);
 144
 145 #endif  // defined __DISK_H