disk.h

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/*
 *  FreeLoader
 *  Copyright (C) 1998-2003  Brian Palmer  <brianp@sginet.com>
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License along
 *  with this program; if not, write to the Free Software Foundation, Inc.,
 *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */
 
#pragma once
 
/* FreeLoader-specific disk geometry structure */
typedef struct _GEOMETRY
{
    ULONG Cylinders;       
    ULONG Heads;           
    ULONG SectorsPerTrack; 
    ULONG BytesPerSector;  
    ULONGLONG Sectors;     
} GEOMETRY, *PGEOMETRY;
 
/*
 * Partition type defines (of PSDK)
 */
#define PARTITION_ENTRY_UNUSED          0x00      // Entry unused
#define PARTITION_FAT_12                0x01      // 12-bit FAT entries
#define PARTITION_FAT_16                0x04      // 16-bit FAT entries
#define PARTITION_EXTENDED              0x05      // Extended partition entry
#define PARTITION_HUGE                  0x06      // Huge partition MS-DOS V4
#define PARTITION_IFS                   0x07      // IFS Partition
#define PARTITION_FAT32                 0x0B      // FAT32
#define PARTITION_FAT32_XINT13          0x0C      // FAT32 using extended int13 services
#define PARTITION_XINT13                0x0E      // Win95 partition using extended int13 services
#define PARTITION_XINT13_EXTENDED       0x0F      // Same as type 5 but uses extended int13 services
#define PARTITION_PREP                  0x41      // PowerPC Reference Platform (PReP) Boot Partition
#define PARTITION_LDM                   0x42      // Logical Disk Manager partition
#define PARTITION_GPT                   0xEE      // GPT protective partition
 
 
//
// PC x86/64 BIOS Disk Functions (pcdisk.c)
//
#if defined(__i386__) || defined(_M_AMD64)
VOID __cdecl DiskStopFloppyMotor(VOID);
#endif // defined __i386__ || defined(_M_AMD64)
 
/* Buffer for disk reads (hwdisk.c) */
extern PVOID DiskReadBuffer;
extern SIZE_T DiskReadBufferSize;
 
 
/* ARC path of the boot drive and partition */
extern CCHAR FrLdrBootPath[MAX_PATH];
 
 
//
// Disk Management Functions
//
 
/*
 * Disk devices helpers (disk.c)
 */
 
LONG
DiskReportError(
    _In_ BOOLEAN bShowError);
 
VOID
DiskError(
    _In_ PCSTR ErrorString,
    _In_ ULONG ErrorCode);
 
extern PCSTR
DiskGetErrorCodeString(
    _In_ ULONG ErrorCode);
 
/* See fs.h */
struct tagDEVVTBL;
 
ARC_STATUS
DiskInitialize(
    _In_ UCHAR DriveNumber, // FIXME: Arch-specific
    _In_ PCSTR DeviceName,
    _In_ CONFIGURATION_TYPE DeviceType,
    _In_ const struct tagDEVVTBL* FuncTable,
    _Out_opt_ PULONG pChecksum,
    _Out_opt_ PULONG pSignature,
    _Out_opt_ PBOOLEAN pValidPartitionTable);
 
 
/*
 * Fixed Disk Partition Management Functions (partition.c)
 */
 
VOID
DiskDetectPartitionType(
    _In_ UCHAR DriveNumber);
 
BOOLEAN
DiskGetBootPartitionEntry(
    _In_ UCHAR DriveNumber,
    _Out_opt_ PPARTITION_INFORMATION PartitionEntry,
    _Out_ PULONG BootPartition);
 
BOOLEAN
DiskGetPartitionEntry(
    _In_ UCHAR DriveNumber,
    _In_opt_ ULONG SectorSize,
    _In_ ULONG PartitionNumber,
    _Out_ PPARTITION_INFORMATION PartitionEntry);
 
 
/*
 * SCSI support (disk/scsiport.c)
 */
ULONG LoadBootDeviceDriver(VOID);
 
PCCHAR FrLdrGetBootPath(VOID);
UCHAR FrldrGetBootDrive(VOID);
ULONG FrldrGetBootPartition(VOID);