disc.h

Philips LPC2138 Demo Application with Keil C

/*****************************************************************************\
*              efs - General purpose Embedded Filesystem library              *
*          --------------------- -----------------------------------          *
*                                                                             *
* Filename : disc.h                                                           *
* Description : This is the header file for disc.c                            *
*                                                                             *
*                                                                             *
* This library is free software; you can redistribute it and/or               *
* modify it under the terms of the GNU Lesser General Public                  *
* License as published by the Free Software Foundation; either                *
* version 2.1 of the License, or (at your option) any later version.          *
*                                                                             *
* This library 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           *
* Lesser General Public License for more details.                             *
*                                                                             *
*                                                    (c)2004 Lennart Yseboodt *
*                                                    (c)2004 Michael De Nil   *
\*****************************************************************************/

#ifndef __DISC_H_
#define __DISC_H_

/*****************************************************************************/
#include "config.h"
#include "error.h"
#include "interface.h"
#include "ioman.h"
#include "types.h"
#include "debug.h"
/*****************************************************************************/

#define LBA_ADDR_MBR 0
#define PARTITION_TABLE_OFFSET 0x1BE

/**********************************************************\
           PartitionField
            ------------
* uchar 	type		Type of partition
* ulong		LBA_begin 	LBA address of first sector.
* ulong		numSectors	Number of 512byte sectors
This structure is a literal representation of a 16 byte
partitionfield. Direct I/O is possible.
\**********************************************************/
struct PartitionField{
	euint8 bootFlag;
	euint8 CHS_begin[3];
	euint8 type;
	euint8 CHS_end[3];
	euint32 LBA_begin;
	euint32 numSectors;
};
typedef struct  PartitionField  PartitionField;

#define SIZE_PARTITION_FIELD 16

/***************************************************************************************\
              Disc     
               --      
* CompactFlash*	sourcedisc		Pointer to the hardwareobject that this disc is on.
* PartitionField* partitions	Array of PartitionFields, containing the partition info
\***************************************************************************************/
struct Disc{
	IOManager *ioman;
	DISC_ERR_EUINT8
	PartitionField partitions[4];
};
typedef struct Disc Disc;

void disc_initDisc(Disc *disc,IOManager *ioman);
void disc_loadMBR(Disc *disc);

#include "extract.h"

#endif