disk/part_dos.c - u-boot - Git at Google

 /*
  * (C) Copyright 2001
  * Raymond Lo, lo@routefree.com
  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
  *
  * 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
  */

 /*
  * Support for harddisk partitions.
  *
  * To be compatible with LinuxPPC and Apple we use the standard Apple
  * SCSI disk partitioning scheme. For more information see:
  * http://developer.apple.com/techpubs/mac/Devices/Devices-126.html#MARKER-14-92
  */

 #include <common.h>
 #include <command.h>
 #include <ide.h>
 #include "part_dos.h"

 #if defined(CONFIG_CMD_IDE) || \
     defined(CONFIG_CMD_MG_DISK) || \
     defined(CONFIG_CMD_SATA) || \
     defined(CONFIG_CMD_SCSI) || \
     defined(CONFIG_CMD_USB) || \
     defined(CONFIG_MMC) || \
     defined(CONFIG_SYSTEMACE)

 /* Convert char[4] in little endian format to the host format integer
  */
 static inline int le32_to_int(unsigned char *le32)
 {
     return ((le32[3] << 24) +
 	    (le32[2] << 16) +
 	    (le32[1] << 8) +
 	     le32[0]
 	   );
 }

 static inline int is_extended(int part_type)
 {
     return (part_type == 0x5 ||
 	    part_type == 0xf ||
 	    part_type == 0x85);
 }

 static void print_one_part (dos_partition_t *p, int ext_part_sector, int part_num)
 {
 	int lba_start = ext_part_sector + le32_to_int (p->start4);
 	int lba_size  = le32_to_int (p->size4);

 	printf ("%5d\t\t%10d\t%10d\t%2x%s\n",
 		part_num, lba_start, lba_size, p->sys_ind,
 		(is_extended (p->sys_ind) ? " Extd" : ""));
 }

 static int test_block_type(unsigned char *buffer)
 {
 	if((buffer[DOS_PART_MAGIC_OFFSET + 0] != 0x55) ||
 	    (buffer[DOS_PART_MAGIC_OFFSET + 1] != 0xaa) ) {
 		return (-1);
 	} /* no DOS Signature at all */
 	if(strncmp((char *)&buffer[DOS_PBR_FSTYPE_OFFSET],"FAT",3)==0)
 		return DOS_PBR; /* is PBR */
 	return DOS_MBR;	    /* Is MBR */
 }


 int test_part_dos (block_dev_desc_t *dev_desc)
 {
 	unsigned char buffer[DEFAULT_SECTOR_SIZE];

 	if ((dev_desc->block_read(dev_desc->dev, 0, 1, (ulong *) buffer) != 1) ||
 	    (buffer[DOS_PART_MAGIC_OFFSET + 0] != 0x55) ||
 	    (buffer[DOS_PART_MAGIC_OFFSET + 1] != 0xaa) ) {
 		return (-1);
 	}
 	return (0);
 }

 /*  Print a partition that is relative to its Extended partition table
  */
 static void print_partition_extended (block_dev_desc_t *dev_desc, int ext_part_sector, int relative,
 							   int part_num)
 {
 	unsigned char buffer[DEFAULT_SECTOR_SIZE];
 	dos_partition_t *pt;
 	int i;

 	if (dev_desc->block_read(dev_desc->dev, ext_part_sector, 1, (ulong *) buffer) != 1) {
 		printf ("** Can't read partition table on %d:%d **\n",
 			dev_desc->dev, ext_part_sector);
 		return;
 	}
 	i=test_block_type(buffer);
 	if(i==-1) {
 		printf ("bad MBR sector signature 0x%02x%02x\n",
 			buffer[DOS_PART_MAGIC_OFFSET],
 			buffer[DOS_PART_MAGIC_OFFSET + 1]);
 		return;
 	}
 	if(i==DOS_PBR) {
 		printf ("    1\t\t         0\t%10ld\t%2x\n",
 			dev_desc->lba, buffer[DOS_PBR_MEDIA_TYPE_OFFSET]);
 		return;
 	}
 	/* Print all primary/logical partitions */
 	pt = (dos_partition_t *) (buffer + DOS_PART_TBL_OFFSET);
 	for (i = 0; i < 4; i++, pt++) {
 		/*
 		 * fdisk does not show the extended partitions that
 		 * are not in the MBR
 		 */

 		if ((pt->sys_ind != 0) &&
 		    (ext_part_sector == 0 || !is_extended (pt->sys_ind)) ) {
 			print_one_part (pt, ext_part_sector, part_num);
 		}

 		/* Reverse engr the fdisk part# assignment rule! */
 		if ((ext_part_sector == 0) ||
 		    (pt->sys_ind != 0 && !is_extended (pt->sys_ind)) ) {
 			part_num++;
 		}
 	}

 	/* Follows the extended partitions */
 	pt = (dos_partition_t *) (buffer + DOS_PART_TBL_OFFSET);
 	for (i = 0; i < 4; i++, pt++) {
 		if (is_extended (pt->sys_ind)) {
 			int lba_start = le32_to_int (pt->start4) + relative;

 			print_partition_extended (dev_desc, lba_start,
 						  ext_part_sector == 0  ? lba_start
 									: relative,
 						  part_num);
 		}
 	}

 	return;
 }


 /*  Print a partition that is relative to its Extended partition table
  */
 static int get_partition_info_extended (block_dev_desc_t *dev_desc, int ext_part_sector,
 				 int relative, int part_num,
 				 int which_part, disk_partition_t *info)
 {
 	unsigned char buffer[DEFAULT_SECTOR_SIZE];
 	dos_partition_t *pt;
 	int i;

 	if (dev_desc->block_read (dev_desc->dev, ext_part_sector, 1, (ulong *) buffer) != 1) {
 		printf ("** Can't read partition table on %d:%d **\n",
 			dev_desc->dev, ext_part_sector);
 		return -1;
 	}
 	if (buffer[DOS_PART_MAGIC_OFFSET] != 0x55 ||
 		buffer[DOS_PART_MAGIC_OFFSET + 1] != 0xaa) {
 		printf ("bad MBR sector signature 0x%02x%02x\n",
 			buffer[DOS_PART_MAGIC_OFFSET],
 			buffer[DOS_PART_MAGIC_OFFSET + 1]);
 		return -1;
 	}

 	/* Print all primary/logical partitions */
 	pt = (dos_partition_t *) (buffer + DOS_PART_TBL_OFFSET);
 	for (i = 0; i < 4; i++, pt++) {
 		/*
 		 * fdisk does not show the extended partitions that
 		 * are not in the MBR
 		 */
 		if ((pt->sys_ind != 0) &&
 		    (part_num == which_part) &&
 		    (is_extended(pt->sys_ind) == 0)) {
 			info->blksz = 512;
 			info->start = ext_part_sector + le32_to_int (pt->start4);
 			info->size  = le32_to_int (pt->size4);
 			switch(dev_desc->if_type) {
 				case IF_TYPE_IDE:
 				case IF_TYPE_SATA:
 				case IF_TYPE_ATAPI:
 					sprintf ((char *)info->name, "hd%c%d\n", 'a' + dev_desc->dev, part_num);
 					break;
 				case IF_TYPE_SCSI:
 					sprintf ((char *)info->name, "sd%c%d\n", 'a' + dev_desc->dev, part_num);
 					break;
 				case IF_TYPE_USB:
 					sprintf ((char *)info->name, "usbd%c%d\n", 'a' + dev_desc->dev, part_num);
 					break;
 				case IF_TYPE_DOC:
 					sprintf ((char *)info->name, "docd%c%d\n", 'a' + dev_desc->dev, part_num);
 					break;
 				default:
 					sprintf ((char *)info->name, "xx%c%d\n", 'a' + dev_desc->dev, part_num);
 					break;
 			}
 			/* sprintf(info->type, "%d, pt->sys_ind); */
 			sprintf ((char *)info->type, "U-Boot");
 			return 0;
 		}

 		/* Reverse engr the fdisk part# assignment rule! */
 		if ((ext_part_sector == 0) ||
 		    (pt->sys_ind != 0 && !is_extended (pt->sys_ind)) ) {
 			part_num++;
 		}
 	}

 	/* Follows the extended partitions */
 	pt = (dos_partition_t *) (buffer + DOS_PART_TBL_OFFSET);
 	for (i = 0; i < 4; i++, pt++) {
 		if (is_extended (pt->sys_ind)) {
 			int lba_start = le32_to_int (pt->start4) + relative;

 			return get_partition_info_extended (dev_desc, lba_start,
 				 ext_part_sector == 0 ? lba_start : relative,
 				 part_num, which_part, info);
 		}
 	}
 	return -1;
 }

 void print_part_dos (block_dev_desc_t *dev_desc)
 {
 	printf ("Partition     Start Sector     Num Sectors     Type\n");
 	print_partition_extended (dev_desc, 0, 0, 1);
 }

 int get_partition_info_dos (block_dev_desc_t *dev_desc, int part, disk_partition_t * info)
 {
 	return get_partition_info_extended (dev_desc, 0, 0, 1, part, info);
 }


 #endif
	/*
	* (C) Copyright 2001
	* Raymond Lo, lo@routefree.com
	* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
	*
	* 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
	*/

	/*
	* Support for harddisk partitions.
	*
	* To be compatible with LinuxPPC and Apple we use the standard Apple
	* SCSI disk partitioning scheme. For more information see:
	* http://developer.apple.com/techpubs/mac/Devices/Devices-126.html#MARKER-14-92
	*/

	#include <common.h>
	#include <command.h>
	#include <ide.h>
	#include "part_dos.h"

	#if defined(CONFIG_CMD_IDE) \|\| \
	defined(CONFIG_CMD_MG_DISK) \|\| \
	defined(CONFIG_CMD_SATA) \|\| \
	defined(CONFIG_CMD_SCSI) \|\| \
	defined(CONFIG_CMD_USB) \|\| \
	defined(CONFIG_MMC) \|\| \
	defined(CONFIG_SYSTEMACE)

	/* Convert char[4] in little endian format to the host format integer
	*/
	static inline int le32_to_int(unsigned char *le32)
	{
	return ((le32[3] << 24) +
	(le32[2] << 16) +
	(le32[1] << 8) +
	le32[0]
	);
	}

	static inline int is_extended(int part_type)
	{
	return (part_type == 0x5 \|\|
	part_type == 0xf \|\|
	part_type == 0x85);
	}

	static void print_one_part (dos_partition_t *p, int ext_part_sector, int part_num)
	{
	int lba_start = ext_part_sector + le32_to_int (p->start4);
	int lba_size = le32_to_int (p->size4);

	printf ("%5d\t\t%10d\t%10d\t%2x%s\n",
	part_num, lba_start, lba_size, p->sys_ind,
	(is_extended (p->sys_ind) ? " Extd" : ""));
	}

	static int test_block_type(unsigned char *buffer)
	{
	if((buffer[DOS_PART_MAGIC_OFFSET + 0] != 0x55) \|\|
	(buffer[DOS_PART_MAGIC_OFFSET + 1] != 0xaa) ) {
	return (-1);
	} /* no DOS Signature at all */
	if(strncmp((char *)&buffer[DOS_PBR_FSTYPE_OFFSET],"FAT",3)==0)
	return DOS_PBR; /* is PBR */
	return DOS_MBR; /* Is MBR */
	}


	int test_part_dos (block_dev_desc_t *dev_desc)
	{
	unsigned char buffer[DEFAULT_SECTOR_SIZE];

	if ((dev_desc->block_read(dev_desc->dev, 0, 1, (ulong *) buffer) != 1) \|\|
	(buffer[DOS_PART_MAGIC_OFFSET + 0] != 0x55) \|\|
	(buffer[DOS_PART_MAGIC_OFFSET + 1] != 0xaa) ) {
	return (-1);
	}
	return (0);
	}

	/* Print a partition that is relative to its Extended partition table
	*/
	static void print_partition_extended (block_dev_desc_t *dev_desc, int ext_part_sector, int relative,
	int part_num)
	{
	unsigned char buffer[DEFAULT_SECTOR_SIZE];
	dos_partition_t *pt;
	int i;

	if (dev_desc->block_read(dev_desc->dev, ext_part_sector, 1, (ulong *) buffer) != 1) {
	printf (" Can't read partition table on %d:%d \n",
	dev_desc->dev, ext_part_sector);
	return;
	}
	i=test_block_type(buffer);
	if(i==-1) {
	printf ("bad MBR sector signature 0x%02x%02x\n",
	buffer[DOS_PART_MAGIC_OFFSET],
	buffer[DOS_PART_MAGIC_OFFSET + 1]);
	return;
	}
	if(i==DOS_PBR) {
	printf (" 1\t\t 0\t%10ld\t%2x\n",
	dev_desc->lba, buffer[DOS_PBR_MEDIA_TYPE_OFFSET]);
	return;
	}
	/* Print all primary/logical partitions */
	pt = (dos_partition_t *) (buffer + DOS_PART_TBL_OFFSET);
	for (i = 0; i < 4; i++, pt++) {
	/*
	* fdisk does not show the extended partitions that
	* are not in the MBR
	*/

	if ((pt->sys_ind != 0) &&
	(ext_part_sector == 0 \|\| !is_extended (pt->sys_ind)) ) {
	print_one_part (pt, ext_part_sector, part_num);
	}

	/* Reverse engr the fdisk part# assignment rule! */
	if ((ext_part_sector == 0) \|\|
	(pt->sys_ind != 0 && !is_extended (pt->sys_ind)) ) {
	part_num++;
	}
	}

	/* Follows the extended partitions */
	pt = (dos_partition_t *) (buffer + DOS_PART_TBL_OFFSET);
	for (i = 0; i < 4; i++, pt++) {
	if (is_extended (pt->sys_ind)) {
	int lba_start = le32_to_int (pt->start4) + relative;

	print_partition_extended (dev_desc, lba_start,
	ext_part_sector == 0 ? lba_start
	: relative,
	part_num);
	}
	}

	return;
	}


	/* Print a partition that is relative to its Extended partition table
	*/
	static int get_partition_info_extended (block_dev_desc_t *dev_desc, int ext_part_sector,
	int relative, int part_num,
	int which_part, disk_partition_t *info)
	{
	unsigned char buffer[DEFAULT_SECTOR_SIZE];
	dos_partition_t *pt;
	int i;

	if (dev_desc->block_read (dev_desc->dev, ext_part_sector, 1, (ulong *) buffer) != 1) {
	printf (" Can't read partition table on %d:%d \n",
	dev_desc->dev, ext_part_sector);
	return -1;
	}
	if (buffer[DOS_PART_MAGIC_OFFSET] != 0x55 \|\|
	buffer[DOS_PART_MAGIC_OFFSET + 1] != 0xaa) {
	printf ("bad MBR sector signature 0x%02x%02x\n",
	buffer[DOS_PART_MAGIC_OFFSET],
	buffer[DOS_PART_MAGIC_OFFSET + 1]);
	return -1;
	}

	/* Print all primary/logical partitions */
	pt = (dos_partition_t *) (buffer + DOS_PART_TBL_OFFSET);
	for (i = 0; i < 4; i++, pt++) {
	/*
	* fdisk does not show the extended partitions that
	* are not in the MBR
	*/
	if ((pt->sys_ind != 0) &&
	(part_num == which_part) &&
	(is_extended(pt->sys_ind) == 0)) {
	info->blksz = 512;
	info->start = ext_part_sector + le32_to_int (pt->start4);
	info->size = le32_to_int (pt->size4);
	switch(dev_desc->if_type) {
	case IF_TYPE_IDE:
	case IF_TYPE_SATA:
	case IF_TYPE_ATAPI:
	sprintf ((char *)info->name, "hd%c%d\n", 'a' + dev_desc->dev, part_num);
	break;
	case IF_TYPE_SCSI:
	sprintf ((char *)info->name, "sd%c%d\n", 'a' + dev_desc->dev, part_num);
	break;
	case IF_TYPE_USB:
	sprintf ((char *)info->name, "usbd%c%d\n", 'a' + dev_desc->dev, part_num);
	break;
	case IF_TYPE_DOC:
	sprintf ((char *)info->name, "docd%c%d\n", 'a' + dev_desc->dev, part_num);
	break;
	default:
	sprintf ((char *)info->name, "xx%c%d\n", 'a' + dev_desc->dev, part_num);
	break;
	}
	/* sprintf(info->type, "%d, pt->sys_ind); */
	sprintf ((char *)info->type, "U-Boot");
	return 0;
	}

	/* Reverse engr the fdisk part# assignment rule! */
	if ((ext_part_sector == 0) \|\|
	(pt->sys_ind != 0 && !is_extended (pt->sys_ind)) ) {
	part_num++;
	}
	}

	/* Follows the extended partitions */
	pt = (dos_partition_t *) (buffer + DOS_PART_TBL_OFFSET);
	for (i = 0; i < 4; i++, pt++) {
	if (is_extended (pt->sys_ind)) {
	int lba_start = le32_to_int (pt->start4) + relative;

	return get_partition_info_extended (dev_desc, lba_start,
	ext_part_sector == 0 ? lba_start : relative,
	part_num, which_part, info);
	}
	}
	return -1;
	}

	void print_part_dos (block_dev_desc_t *dev_desc)
	{
	printf ("Partition Start Sector Num Sectors Type\n");
	print_partition_extended (dev_desc, 0, 0, 1);
	}

	int get_partition_info_dos (block_dev_desc_t dev_desc, int part, disk_partition_t info)
	{
	return get_partition_info_extended (dev_desc, 0, 0, 1, part, info);
	}


	#endif