3 * Copyright (C) 1998-2003 Brian Palmer <brianp@sginet.com>
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.
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.
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.
22 #include <reactos/rosioctl.h>
24 typedef struct _GEOMETRY
26 ULONG Cylinders
; // Number of cylinders on the disk
27 ULONG Heads
; // Number of heads on the disk
28 ULONG Sectors
; // Number of sectors per track
29 ULONG BytesPerSector
; // Number of bytes per sector
31 } GEOMETRY
, *PGEOMETRY
;
34 // Extended disk geometry (Int13 / ah=48h)
37 typedef struct _EXTENDED_GEOMETRY
43 ULONG SectorsPerTrack
;
45 USHORT BytesPerSector
;
48 } EXTENDED_GEOMETRY
, *PEXTENDED_GEOMETRY
;
51 // Define the structure of a partition table entry
53 typedef struct _PARTITION_TABLE_ENTRY
55 UCHAR BootIndicator
; // 0x00 - non-bootable partition,
56 // 0x80 - bootable partition (one partition only)
57 UCHAR StartHead
; // Beginning head number
58 UCHAR StartSector
; // Beginning sector (2 high bits of cylinder #)
59 UCHAR StartCylinder
; // Beginning cylinder# (low order bits of cylinder #)
60 UCHAR SystemIndicator
; // System indicator
61 UCHAR EndHead
; // Ending head number
62 UCHAR EndSector
; // Ending sector (2 high bits of cylinder #)
63 UCHAR EndCylinder
; // Ending cylinder# (low order bits of cylinder #)
64 ULONG SectorCountBeforePartition
; // Number of sectors preceding the partition
65 ULONG PartitionSectorCount
; // Number of sectors in the partition
67 } PARTITION_TABLE_ENTRY
, *PPARTITION_TABLE_ENTRY
;
70 // Define the structure of the master boot record
72 typedef struct _MASTER_BOOT_RECORD
74 UCHAR MasterBootRecordCodeAndData
[0x1b8]; /* 0x000 */
75 ULONG Signature
; /* 0x1B8 */
76 USHORT Reserved
; /* 0x1BC */
77 PARTITION_TABLE_ENTRY PartitionTable
[4]; /* 0x1BE */
78 USHORT MasterBootRecordMagic
; /* 0x1FE */
80 } MASTER_BOOT_RECORD
, *PMASTER_BOOT_RECORD
;
84 // Partition type defines (of PSDK)
86 #define PARTITION_ENTRY_UNUSED 0x00 // Entry unused
87 #define PARTITION_FAT_12 0x01 // 12-bit FAT entries
88 #define PARTITION_XENIX_1 0x02 // Xenix
89 #define PARTITION_XENIX_2 0x03 // Xenix
90 #define PARTITION_FAT_16 0x04 // 16-bit FAT entries
91 #define PARTITION_EXTENDED 0x05 // Extended partition entry
92 #define PARTITION_HUGE 0x06 // Huge partition MS-DOS V4
93 #define PARTITION_IFS 0x07 // IFS Partition
94 #define PARTITION_OS2BOOTMGR 0x0A // OS/2 Boot Manager/OPUS/Coherent swap
95 #define PARTITION_FAT32 0x0B // FAT32
96 #define PARTITION_FAT32_XINT13 0x0C // FAT32 using extended int13 services
97 #define PARTITION_XINT13 0x0E // Win95 partition using extended int13 services
98 #define PARTITION_XINT13_EXTENDED 0x0F // Same as type 5 but uses extended int13 services
99 #define PARTITION_NTFS 0x17 // NTFS
100 #define PARTITION_PREP 0x41 // PowerPC Reference Platform (PReP) Boot Partition
101 #define PARTITION_LDM 0x42 // Logical Disk Manager partition
102 #define PARTITION_UNIX 0x63 // Unix
103 #define VALID_NTFT 0xC0 // NTFT uses high order bits
104 #define PARTITION_NTFT 0x80 // NTFT partition
106 #define PARTITION_OLD_LINUX 0x43
107 #define PARTITION_LINUX 0x83
110 ///////////////////////////////////////////////////////////////////////////////////////
112 // PC x86/64 BIOS Disk Functions (pcdisk.c)
114 ///////////////////////////////////////////////////////////////////////////////////////
115 #if defined(__i386__) || defined(_M_AMD64)
116 VOID
DiskStopFloppyMotor(VOID
);
117 #endif // defined __i386__ || defined(_M_AMD64)
119 ///////////////////////////////////////////////////////////////////////////////////////
121 // FreeLoader Disk Functions
123 ///////////////////////////////////////////////////////////////////////////////////////
124 VOID
DiskReportError(BOOLEAN bError
);
125 VOID
DiskError(PCSTR ErrorString
, ULONG ErrorCode
);
126 PCSTR
DiskGetErrorCodeString(ULONG ErrorCode
);
127 BOOLEAN
DiskIsDriveRemovable(UCHAR DriveNumber
);
129 BOOLEAN
DiskGetBootPath(OUT PCHAR BootPath
, IN ULONG Size
);
130 /* Platform-specific boot drive and partition numbers */
131 extern UCHAR FrldrBootDrive
;
132 extern ULONG FrldrBootPartition
;
133 /* ARC path of the boot drive and partition */
134 extern CHAR FrldrBootPath
[MAX_PATH
];
136 /* Buffer for disk reads */
137 extern PVOID DiskReadBuffer
;
138 extern SIZE_T DiskReadBufferSize
;
141 ///////////////////////////////////////////////////////////////////////////////////////
143 // Fixed Disk Partition Management Functions
145 ///////////////////////////////////////////////////////////////////////////////////////
147 /* Signature of DiskGetPartitionEntry(...) */
150 (*DISK_GET_PARTITION_ENTRY
)(UCHAR DriveNumber
,
151 ULONG PartitionNumber
,
152 PPARTITION_TABLE_ENTRY PartitionTableEntry
);
154 /* This function serves to retrieve a partition entry for devices that handle partitions differently */
155 extern DISK_GET_PARTITION_ENTRY DiskGetPartitionEntry
;
157 BOOLEAN
DiskGetActivePartitionEntry(UCHAR DriveNumber
, PPARTITION_TABLE_ENTRY PartitionTableEntry
, ULONG
*ActivePartition
);
158 BOOLEAN
DiskGetMbrPartitionEntry(UCHAR DriveNumber
, ULONG PartitionNumber
, PPARTITION_TABLE_ENTRY PartitionTableEntry
);
159 BOOLEAN
DiskGetFirstPartitionEntry(PMASTER_BOOT_RECORD MasterBootRecord
, PPARTITION_TABLE_ENTRY PartitionTableEntry
);
160 BOOLEAN
DiskGetFirstExtendedPartitionEntry(PMASTER_BOOT_RECORD MasterBootRecord
, PPARTITION_TABLE_ENTRY PartitionTableEntry
);
161 BOOLEAN
DiskReadBootRecord(UCHAR DriveNumber
, ULONGLONG LogicalSectorNumber
, PMASTER_BOOT_RECORD BootRecord
);
164 * SCSI support (disk/scsiport.c)
166 ULONG
LoadBootDeviceDriver(VOID
);