part.h

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/*! \file part.h \brief Disk Partition Interface. */
//*****************************************************************************
//
// File Name    : 'part.h'
// Title        : Disk Partition Interface
// Author       : Pascal Stang (c) 2004
// Date         : 8/13/2004
// Revised      : 8/13/2004
// Version      : 0.3
// Target MCU   : any?
// Editor Tabs  : 4
//
// NOTE: This code is currently below version 1.0, and therefore is considered
// to be lacking in some functionality or documentation, or may not be fully
// tested.  Nonetheless, you can expect most functions to work.
//
// This code is distributed under the GNU Public License
//      which can be found at http://www.gnu.org/licenses/gpl.txt
//
//*****************************************************************************

#ifndef PART_H
#define PART_H

#include "global.h"

// Partition Type used in the partition record
#define PART_TYPE_UNKNOWN       0x00
#define PART_TYPE_FAT12         0x01
#define PART_TYPE_XENIX         0x02
#define PART_TYPE_DOSFAT16      0x04
#define PART_TYPE_EXTDOS        0x05
#define PART_TYPE_FAT16         0x06
#define PART_TYPE_NTFS          0x07
#define PART_TYPE_FAT32         0x0B
#define PART_TYPE_FAT32LBA      0x0C
#define PART_TYPE_FAT16LBA      0x0E
#define PART_TYPE_EXTDOSLBA     0x0F
#define PART_TYPE_ONTRACK       0x33
#define PART_TYPE_NOVELL        0x40
#define PART_TYPE_PCIX          0x4B
#define PART_TYPE_PHOENIXSAVE   0xA0
#define PART_TYPE_CPM           0xDB
#define PART_TYPE_DBFS          0xE0
#define PART_TYPE_BBT           0xFF

// partition record, length 16 bytes
struct partrecord
{           
    BYTE    prIsActive;                 // 0x80 indicates active partition
    BYTE    prStartHead;                // starting head for partition
    WORD    prStartCylSect;             // starting cylinder and sector
    BYTE    prPartType;                 // partition type (see above)
    BYTE    prEndHead;                  // ending head for this partition
    WORD    prEndCylSect;               // ending cylinder and sector
    DWORD   prStartLBA;                 // first LBA sector for this partition
    DWORD   prSize;                     // size of this partition (bytes or sectors ?)
} GNUC_PACKED;

struct partsector
{
    CHAR    psPartCode[512-64-2];       // pad so struct is 512b
    struct partrecord psPartition[4];   // four partition records (64 bytes)
    BYTE    psBootSectSig0;             // first signature byte: 0x55
    BYTE    psBootSectSig1;             // second signature byte: 0xAA
} GNUC_PACKED;
        
struct partsector_byte
{
    CHAR    psPartCode[512-64-2];       // pad so struct is 512b
    BYTE    psPart[64];                 // four partition records (64 bytes)
    BYTE    psBootSectSig0;             // first signature byte: 0x55
    BYTE    psBootSectSig1;             // second signature byte: 0xAA
} GNUC_PACKED;

#define PART_BOOTSIG0        0x55
#define PART_BOOTSIG1        0xaa

// interface
struct PartInfo
{
    DiskInfo_t disk;
    DevDisk_t dev;
    unsigned long start;
    unsigned long sizeinsectors;
//};
} GNUC_PACKED;

typedef struct PartInfo PartInfo_t;

extern PartInfo_t PartInfo;

// Prototypes
int partInit(DiskInfo_t* disk);

void partPrintEntry(struct partrecord *partition);
void partPrintTable(struct partsector *buffer);

int partReadSector(unsigned long sector, int numsectors, u08* buffer);
int partWriteSector(unsigned long sector, int numsectors, u08* buffer);

#endif

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