part.c

ARM的bootloader代码.rar

/*
 * (C) Copyright 2001
 * Wolfgang Denk, DENX Software Engineering, [e-mail].
 *
 * See file CREDITS for list of people who contributed to this
 * project.
 *
 * 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., 59 Temple Place, Suite 330, Boston,
 * MA 02111-1307 USA
 */

#include <armboot.h>
#include <command.h>
#include <ide.h>
#include <cmd_disk.h>
#include <part.h>

#undef	PART_DEBUG

#ifdef	PART_DEBUG
#define	PRINTF(fmt,args...)	printf (fmt ,##args)
#else
#define PRINTF(fmt,args...)
#endif

#if (CONFIG_COMMANDS & CFG_CMD_IDE) || (CONFIG_COMMANDS & CFG_CMD_SCSI)

/* stdlib.h causes some compatibility problems; should fixe these! -- wd */
#ifndef __ldiv_t_defined
typedef struct {
	long int quot;		/* Quotient	*/
	long int rem;		/* Remainder	*/
} ldiv_t;
extern ldiv_t ldiv (long int __numer, long int __denom);
# define __ldiv_t_defined	1
#endif


/* ------------------------------------------------------------------------- */
/*
 * reports device info to the user
 */
void dev_print(block_dev_desc_t *dev_desc)
{
	ldiv_t mb, gb;
	ulong lba512; /* number of blocks if 512bytes block size */
	if (dev_desc->type==DEV_TYPE_UNKNOWN) {
		printf("not available\n");
		return;
	}
	if(dev_desc->if_type==IF_TYPE_SCSI)  {
		printf ("(%d:%d) ", dev_desc->target,dev_desc->lun);
	}
	if(dev_desc->if_type==IF_TYPE_IDE) {
		printf ("Model: %s Firm: %s Ser#: %s\n",
			dev_desc->vendor,
			dev_desc->revision,
			dev_desc->product);
	} else {
		printf ("Vendor: %s Prod.: %s Rev: %s\n",
			dev_desc->vendor,
			dev_desc->product,
			dev_desc->revision);
	}
	printf("            Type: ");
	if(dev_desc->removable)
		printf ("Removable ");
	switch(dev_desc->type & 0x1F) {
		case DEV_TYPE_HARDDISK: printf("Hard Disk");
					break;
		case DEV_TYPE_CDROM: 	printf("CD ROM");
					break;
		case DEV_TYPE_OPDISK: 	printf("Optical Device");
					break;
		case DEV_TYPE_TAPE: 	printf("Tape");
					break;
		default:		printf("# %02X #", dev_desc->type & 0x1F);
					break;
	}
	printf("\n");
	if((dev_desc->lba * dev_desc->blksz)>0L) {
		lba512=(dev_desc->lba * (dev_desc->blksz/512));
		mb = ldiv(lba512, 2048); /* (1024 *1024 / 512 MB */
		/* round to 1 digit */
		mb.rem *= 10 * 512;
		mb.rem += 512 * 1024;
		mb.rem /= 1024 * 1024;
		gb = ldiv(10 * mb.quot + mb.rem, 10240);
		gb.rem += 512;
		gb.rem /= 1024;
		printf ("            Capacity: %ld.%ld MB = %ld.%ld GB (%ld x %ld)\n",
			mb.quot, mb.rem,
			gb.quot, gb.rem,
			dev_desc->lba,
			dev_desc->blksz);
	}
	else {
		printf ("            Capacity: not available\n");
	}
}



#if defined(CONFIG_MAC_PARTITION) || \
    defined(CONFIG_DOS_PARTITION) || \
    defined(CONFIG_ISO_PARTITION)

void init_part (block_dev_desc_t * dev_desc)
{
#ifdef CONFIG_ISO_PARTITION
	if (test_part_iso(dev_desc) == 0) {
		dev_desc->part_type = PART_TYPE_ISO;
		return;
	}
#endif

#ifdef CONFIG_MAC_PARTITION
	if (test_part_mac(dev_desc) == 0) {
		dev_desc->part_type = PART_TYPE_MAC;
		return;
	}
#endif

#ifdef CONFIG_DOS_PARTITION
	if (test_part_dos(dev_desc) == 0) {
		dev_desc->part_type = PART_TYPE_DOS;
		return;
	}
#endif
}


int get_partition_info(block_dev_desc_t *dev_desc, int part, disk_partition_t *info)
{
		switch(dev_desc->part_type) {
#ifdef CONFIG_MAC_PARTITION
	case PART_TYPE_MAC:
		if (get_partition_info_mac(dev_desc,part,info) == 0) {
			PRINTF ("## Valid MAC partition found ##\n");
			return (0);
		}
		break;
#endif

#ifdef CONFIG_DOS_PARTITION
	case PART_TYPE_DOS:
		if (get_partition_info_dos(dev_desc,part,info) == 0) {
			PRINTF ("## Valid DOS partition found ##\n");
			return (0);
		}
		break;
#endif

#ifdef CONFIG_ISO_PARTITION
	case PART_TYPE_ISO:
		if (get_partition_info_iso(dev_desc,part,info) == 0) {
			PRINTF ("## Valid ISO boot partition found ##\n");
			return (0);
		}
		break;
#endif
	default:
		break;
	}
	return (-1);
}

static void print_part_header (const char *type, block_dev_desc_t * dev_desc)
{
	printf ("\nPartition Map for ");
	switch(dev_desc->if_type) {
		case IF_TYPE_IDE:  	printf("IDE");
					break;
		case IF_TYPE_SCSI: 	printf("SCSI");
					break;
		case IF_TYPE_ATAPI:	printf("ATAPI");
					break;
		default: 		printf("UNKNOWN");
					break;
	}
	printf(" device %d  --   Partition Type: %s\n\n",
			dev_desc->dev, type);
}

void print_part (block_dev_desc_t * dev_desc)
{

		switch(dev_desc->part_type) {
#ifdef CONFIG_MAC_PARTITION
	case PART_TYPE_MAC:
		PRINTF ("## Testing for valid MAC partition ##\n");
		print_part_header ("MAC", dev_desc);
		print_part_mac (dev_desc);
		return;
#endif
#ifdef CONFIG_DOS_PARTITION
	case PART_TYPE_DOS:
		PRINTF ("## Testing for valid DOS partition ##\n");
		print_part_header ("DOS", dev_desc);
		print_part_dos (dev_desc);
		return;
#endif

#ifdef CONFIG_ISO_PARTITION
	case PART_TYPE_ISO:
		PRINTF ("## Testing for valid ISO Boot partition ##\n");
		print_part_header ("ISO", dev_desc);
		print_part_iso (dev_desc);
		return;
#endif
	}
	printf ("## Unknown partition table\n");
}


#else	/* neither MAC nor DOS nor ISO partition configured */
# error neither CONFIG_MAC_PARTITION nor CONFIG_DOS_PARTITION nor CONFIG_ISO_PARTITION configured!
#endif

#endif	/* (CONFIG_COMMANDS & CFG_CMD_IDE) || CONFIG_COMMANDS & CFG_CMD_SCSI) */