[FREELDR]
[reactos.git] / 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 #pragma once
21
22 #include <reactos/rosioctl.h>
23
24 typedef struct _GEOMETRY
25 {
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
30
31 } GEOMETRY, *PGEOMETRY;
32
33 //
34 // Extended disk geometry (Int13 / ah=48h)
35 //
36 #include <pshpack1.h>
37 typedef struct _EXTENDED_GEOMETRY
38 {
39 USHORT Size;
40 USHORT Flags;
41 ULONG Cylinders;
42 ULONG Heads;
43 ULONG SectorsPerTrack;
44 ULONGLONG Sectors;
45 USHORT BytesPerSector;
46 ULONG PDPTE;
47 } EXTENDED_GEOMETRY, *PEXTENDED_GEOMETRY;
48
49 //
50 // Define the structure of a partition table entry
51 //
52 typedef struct _PARTITION_TABLE_ENTRY
53 {
54 UCHAR BootIndicator; // 0x00 - non-bootable partition, 0x80 - bootable partition (one partition only)
55 UCHAR StartHead; // Beginning head number
56 UCHAR StartSector; // Beginning sector (2 high bits of cylinder #)
57 UCHAR StartCylinder; // Beginning cylinder# (low order bits of cylinder #)
58 UCHAR SystemIndicator; // System indicator
59 UCHAR EndHead; // Ending head number
60 UCHAR EndSector; // Ending sector (2 high bits of cylinder #)
61 UCHAR EndCylinder; // Ending cylinder# (low order bits of cylinder #)
62 ULONG SectorCountBeforePartition; // Number of sectors preceding the partition
63 ULONG PartitionSectorCount; // Number of sectors in the partition
64
65 } PARTITION_TABLE_ENTRY, *PPARTITION_TABLE_ENTRY;
66
67 //
68 // Define the structure of the master boot record
69 //
70 typedef struct _MASTER_BOOT_RECORD
71 {
72 UCHAR MasterBootRecordCodeAndData[0x1b8]; /* 0x000 */
73 ULONG Signature; /* 0x1B8 */
74 USHORT Reserved; /* 0x1BC */
75 PARTITION_TABLE_ENTRY PartitionTable[4]; /* 0x1BE */
76 USHORT MasterBootRecordMagic; /* 0x1FE */
77
78 } MASTER_BOOT_RECORD, *PMASTER_BOOT_RECORD;
79 #include <poppack.h>
80
81 //
82 // Partition type defines (of PSDK)
83 //
84 #define PARTITION_ENTRY_UNUSED 0x00 // Entry unused
85 #define PARTITION_FAT_12 0x01 // 12-bit FAT entries
86 #define PARTITION_XENIX_1 0x02 // Xenix
87 #define PARTITION_XENIX_2 0x03 // Xenix
88 #define PARTITION_FAT_16 0x04 // 16-bit FAT entries
89 #define PARTITION_EXTENDED 0x05 // Extended partition entry
90 #define PARTITION_HUGE 0x06 // Huge partition MS-DOS V4
91 #define PARTITION_IFS 0x07 // IFS Partition
92 #define PARTITION_FAT32 0x0B // FAT32
93 #define PARTITION_FAT32_XINT13 0x0C // FAT32 using extended int13 services
94 #define PARTITION_XINT13 0x0E // Win95 partition using extended int13 services
95 #define PARTITION_XINT13_EXTENDED 0x0F // Same as type 5 but uses extended int13 services
96 #define PARTITION_NTFS 0x17 // NTFS
97 #define PARTITION_PREP 0x41 // PowerPC Reference Platform (PReP) Boot Partition
98 #define PARTITION_LDM 0x42 // Logical Disk Manager partition
99 #define PARTITION_UNIX 0x63 // Unix
100
101 ///////////////////////////////////////////////////////////////////////////////////////
102 //
103 // i386 BIOS Disk Functions (i386disk.c)
104 //
105 ///////////////////////////////////////////////////////////////////////////////////////
106 #if defined(__i386__) || defined(_M_AMD64)
107
108 BOOLEAN DiskResetController(ULONG DriveNumber);
109 BOOLEAN DiskInt13ExtensionsSupported(ULONG DriveNumber);
110 //VOID DiskStopFloppyMotor(VOID);
111 BOOLEAN DiskGetExtendedDriveParameters(ULONG DriveNumber, PVOID Buffer, USHORT BufferSize);
112
113 #endif // defined __i386__ || defined(_M_AMD64)
114
115 ///////////////////////////////////////////////////////////////////////////////////////
116 //
117 // FreeLoader Disk Functions
118 //
119 ///////////////////////////////////////////////////////////////////////////////////////
120 VOID DiskReportError (BOOLEAN bError);
121 VOID DiskError(PCSTR ErrorString, ULONG ErrorCode);
122 PCSTR DiskGetErrorCodeString(ULONG ErrorCode);
123 BOOLEAN DiskReadLogicalSectors(ULONG DriveNumber, ULONGLONG SectorNumber, ULONG SectorCount, PVOID Buffer); // Implemented in i386disk.c
124 BOOLEAN DiskIsDriveRemovable(ULONG DriveNumber);
125 VOID DiskStopFloppyMotor(VOID); // Implemented in i386disk.c
126 extern ULONG FrldrBootDrive;
127 extern ULONG FrldrBootPartition;
128
129 BOOLEAN DiskGetBootPath(char *BootPath, unsigned Size);
130
131
132 ///////////////////////////////////////////////////////////////////////////////////////
133 //
134 // Fixed Disk Partition Management Functions
135 //
136 ///////////////////////////////////////////////////////////////////////////////////////
137 BOOLEAN DiskGetActivePartitionEntry(ULONG DriveNumber, PPARTITION_TABLE_ENTRY PartitionTableEntry, ULONG *ActivePartition);
138 BOOLEAN DiskGetPartitionEntry(ULONG DriveNumber, ULONG PartitionNumber, PPARTITION_TABLE_ENTRY PartitionTableEntry);
139 BOOLEAN DiskGetFirstPartitionEntry(PMASTER_BOOT_RECORD MasterBootRecord, PPARTITION_TABLE_ENTRY PartitionTableEntry);
140 BOOLEAN DiskGetFirstExtendedPartitionEntry(PMASTER_BOOT_RECORD MasterBootRecord, PPARTITION_TABLE_ENTRY PartitionTableEntry);
141 BOOLEAN DiskReadBootRecord(ULONG DriveNumber, ULONGLONG LogicalSectorNumber, PMASTER_BOOT_RECORD BootRecord);
142
143 ULONG LoadBootDeviceDriver(VOID);