part.c

基于mips cpu,在u-boot系统下磁盘驱动程序。

/*
 * (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 <common.h>
#include <command.h>
#include <ide.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)	|| \
     (CONFIG_COMMANDS & CFG_CMD_USB)	|| \
     defined(CONFIG_MMC) || \
     defined(CONFIG_SYSTEMACE) )

/* ------------------------------------------------------------------------- */
/*
 * reports device info to the user
 */
void dev_print (block_dev_desc_t *dev_desc)
{
#ifdef CONFIG_LBA48
	uint64_t lba512; /* number of blocks if 512bytes block size */
#else
	lbaint_t lba512;
#endif

	if (dev_desc->type==DEV_TYPE_UNKNOWN) {
		puts ("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);
	}
	puts ("            Type: ");
	if (dev_desc->removable)
		puts ("Removable ");
	switch (dev_desc->type & 0x1F) {
		case DEV_TYPE_HARDDISK: puts ("Hard Disk");
					break;
		case DEV_TYPE_CDROM: 	puts ("CD ROM");
					break;
		case DEV_TYPE_OPDISK: 	puts ("Optical Device");
					break;
		case DEV_TYPE_TAPE: 	puts ("Tape");
					break;
		default:		printf ("# %02X #", dev_desc->type & 0x1F);
					break;
	}
	puts ("\n");
	if ((dev_desc->lba * dev_desc->blksz)>0L) {
		ulong mb, mb_quot, mb_rem, gb, gb_quot, gb_rem;
		lbaint_t lba;

		lba = dev_desc->lba;

		lba512 = (lba * (dev_desc->blksz/512));
		mb = (10 * lba512) / 2048;	/* 2048 = (1024 * 1024) / 512 MB */
		/* round to 1 digit */
		mb_quot	= mb / 10;
		mb_rem	= mb - (10 * mb_quot);

		gb = mb / 1024;
		gb_quot	= gb / 10;
		gb_rem	= gb - (10 * gb_quot);
#ifdef CONFIG_LBA48
		if (dev_desc->lba48)
			printf ("            Supports 48-bit addressing\n");
#endif
#if defined(CFG_64BIT_LBA) && defined(CFG_64BIT_VSPRINTF)
		printf ("            Capacity: %ld.%ld MB = %ld.%ld GB (%qd x %ld)\n",
			mb_quot, mb_rem,
			gb_quot, gb_rem,
			lba,
			dev_desc->blksz);
#else
		printf ("            Capacity: %ld.%ld MB = %ld.%ld GB (%ld x %ld)\n",
			mb_quot, mb_rem,
			gb_quot, gb_rem,
			(ulong)lba,
			dev_desc->blksz);
#endif
	} else {
		puts ("            Capacity: not available\n");
	}
}
#endif	/* CFG_CMD_IDE || CFG_CMD_SCSI || CFG_CMD_USB || CONFIG_MMC */

#if ((CONFIG_COMMANDS & CFG_CMD_IDE)	|| \
     (CONFIG_COMMANDS & CFG_CMD_SCSI)	|| \
     (CONFIG_COMMANDS & CFG_CMD_USB)	|| \
     defined(CONFIG_SYSTEMACE)          )

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

#ifdef CONFIG_AMIGA_PARTITION
	if (test_part_amiga(dev_desc) == 0) {
	    dev_desc->part_type = PART_TYPE_AMIGA;
	    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

#ifdef CONFIG_AMIGA_PARTITION
	case PART_TYPE_AMIGA:
	    if (get_partition_info_amiga(dev_desc, part, info) == 0)
	    {
		PRINTF ("## Valid Amiga 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)
{
	puts ("\nPartition Map for ");
	switch (dev_desc->if_type) {
		case IF_TYPE_IDE:  	puts ("IDE");
					break;
		case IF_TYPE_SCSI: 	puts ("SCSI");
					break;
		case IF_TYPE_ATAPI:	puts ("ATAPI");
					break;
		case IF_TYPE_USB:	puts ("USB");
					break;
		case IF_TYPE_DOC:	puts ("DOC");
					break;
		default: 		puts ("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

#ifdef CONFIG_AMIGA_PARTITION
	case PART_TYPE_AMIGA:
	    PRINTF ("## Testing for a valid Amiga partition ##\n");
	    print_part_header ("AMIGA", dev_desc);
	    print_part_amiga (dev_desc);
	    return;
#endif
	}
	puts ("## 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) */