[people/ms/u-boot.git] / disk / part_dos.c

/*
 * (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_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 ||
	    strncmp((char *)&buffer[DOS_PBR32_FSTYPE_OFFSET],"FAT32",5)==0) {
		return DOS_PBR; /* is PBR */
	}
	return DOS_MBR;	    /* Is MBR */
}


int test_part_dos (block_dev_desc_t *dev_desc)
{
	ALLOC_CACHE_ALIGN_BUFFER(unsigned char, buffer, dev_desc->blksz);

	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)
{
	ALLOC_CACHE_ALIGN_BUFFER(unsigned char, buffer, dev_desc->blksz);
	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)
{
	ALLOC_CACHE_ALIGN_BUFFER(unsigned char, buffer, dev_desc->blksz);
	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->boot_ind & ~0x80) == 0) &&
		    (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",
						'a' + dev_desc->dev, part_num);
					break;
				case IF_TYPE_SCSI:
					sprintf ((char *)info->name, "sd%c%d",
						'a' + dev_desc->dev, part_num);
					break;
				case IF_TYPE_USB:
					sprintf ((char *)info->name, "usbd%c%d",
						'a' + dev_desc->dev, part_num);
					break;
				case IF_TYPE_DOC:
					sprintf ((char *)info->name, "docd%c%d",
						'a' + dev_desc->dev, part_num);
					break;
				default:
					sprintf ((char *)info->name, "xx%c%d",
						'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
Commit	Line	Data
fe8c2806 WD	1	/*
	2	* (C) Copyright 2001
	3	* Raymond Lo, lo@routefree.com
	4	* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
	5	*
	6	* See file CREDITS for list of people who contributed to this
	7	* project.
	8	*
	9	* This program is free software; you can redistribute it and/or
	10	* modify it under the terms of the GNU General Public License as
	11	* published by the Free Software Foundation; either version 2 of
	12	* the License, or (at your option) any later version.
	13	*
	14	* This program is distributed in the hope that it will be useful,
	15	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	16	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	17	* GNU General Public License for more details.
	18	*
	19	* You should have received a copy of the GNU General Public License
	20	* along with this program; if not, write to the Free Software
	21	* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
	22	* MA 02111-1307 USA
	23	*/
	24
	25	/*
	26	* Support for harddisk partitions.
	27	*
	28	* To be compatible with LinuxPPC and Apple we use the standard Apple
	29	* SCSI disk partitioning scheme. For more information see:
	30	* http://developer.apple.com/techpubs/mac/Devices/Devices-126.html#MARKER-14-92
	31	*/
	32
	33	#include <common.h>
	34	#include <command.h>
	35	#include <ide.h>
fe8c2806 WD	36	#include "part_dos.h"
fe8c2806 WD	37
7bd2722e MF	38	#if defined(CONFIG_CMD_IDE) \|\| \
	39	defined(CONFIG_CMD_SATA) \|\| \
	40	defined(CONFIG_CMD_SCSI) \|\| \
	41	defined(CONFIG_CMD_USB) \|\| \
	42	defined(CONFIG_MMC) \|\| \
	43	defined(CONFIG_SYSTEMACE)
fe8c2806 WD	44
	45	/* Convert char[4] in little endian format to the host format integer
	46	*/
	47	static inline int le32_to_int(unsigned char *le32)
	48	{
	49	return ((le32[3] << 24) +
	50	(le32[2] << 16) +
	51	(le32[1] << 8) +
	52	le32[0]
	53	);
	54	}
	55
	56	static inline int is_extended(int part_type)
	57	{
	58	return (part_type == 0x5 \|\|
	59	part_type == 0xf \|\|
	60	part_type == 0x85);
	61	}
	62
	63	static void print_one_part (dos_partition_t *p, int ext_part_sector, int part_num)
	64	{
	65	int lba_start = ext_part_sector + le32_to_int (p->start4);
	66	int lba_size = le32_to_int (p->size4);
	67
	68	printf ("%5d\t\t%10d\t%10d\t%2x%s\n",
	69	part_num, lba_start, lba_size, p->sys_ind,
	70	(is_extended (p->sys_ind) ? " Extd" : ""));
	71	}
	72
7205e407 WD	73	static int test_block_type(unsigned char *buffer)
	74	{
	75	if((buffer[DOS_PART_MAGIC_OFFSET + 0] != 0x55) \|\|
	76	(buffer[DOS_PART_MAGIC_OFFSET + 1] != 0xaa) ) {
	77	return (-1);
	78	} /* no DOS Signature at all */
66c2d73c WD	79	if (strncmp((char *)&buffer[DOS_PBR_FSTYPE_OFFSET],"FAT",3)==0 \|\|
66c2d73c WD	80	strncmp((char *)&buffer[DOS_PBR32_FSTYPE_OFFSET],"FAT32",5)==0) {
7205e407	81	return DOS_PBR; /* is PBR */
66c2d73c	82	}
7205e407 WD	83	return DOS_MBR; /* Is MBR */
	84	}
	85
fe8c2806	86
fe8c2806 WD	87	int test_part_dos (block_dev_desc_t *dev_desc)
fe8c2806 WD	88	{
dec049d9	89	ALLOC_CACHE_ALIGN_BUFFER(unsigned char, buffer, dev_desc->blksz);
fe8c2806 WD	90
	91	if ((dev_desc->block_read(dev_desc->dev, 0, 1, (ulong *) buffer) != 1) \|\|
	92	(buffer[DOS_PART_MAGIC_OFFSET + 0] != 0x55) \|\|
	93	(buffer[DOS_PART_MAGIC_OFFSET + 1] != 0xaa) ) {
8bde7f77	94	return (-1);
fe8c2806 WD	95	}
	96	return (0);
	97	}
	98
	99	/* Print a partition that is relative to its Extended partition table
	100	*/
	101	static void print_partition_extended (block_dev_desc_t *dev_desc, int ext_part_sector, int relative,
	102	int part_num)
	103	{
dec049d9	104	ALLOC_CACHE_ALIGN_BUFFER(unsigned char, buffer, dev_desc->blksz);
fe8c2806 WD	105	dos_partition_t *pt;
	106	int i;
	107
	108	if (dev_desc->block_read(dev_desc->dev, ext_part_sector, 1, (ulong *) buffer) != 1) {
	109	printf (" Can't read partition table on %d:%d \n",
	110	dev_desc->dev, ext_part_sector);
	111	return;
	112	}
7205e407 WD	113	i=test_block_type(buffer);
7205e407 WD	114	if(i==-1) {
fe8c2806 WD	115	printf ("bad MBR sector signature 0x%02x%02x\n",
	116	buffer[DOS_PART_MAGIC_OFFSET],
	117	buffer[DOS_PART_MAGIC_OFFSET + 1]);
	118	return;
	119	}
7205e407 WD	120	if(i==DOS_PBR) {
	121	printf (" 1\t\t 0\t%10ld\t%2x\n",
	122	dev_desc->lba, buffer[DOS_PBR_MEDIA_TYPE_OFFSET]);
	123	return;
	124	}
fe8c2806 WD	125	/* Print all primary/logical partitions */
	126	pt = (dos_partition_t *) (buffer + DOS_PART_TBL_OFFSET);
	127	for (i = 0; i < 4; i++, pt++) {
	128	/*
8bde7f77	129	* fdisk does not show the extended partitions that
fe8c2806 WD	130	* are not in the MBR
	131	*/
	132
	133	if ((pt->sys_ind != 0) &&
	134	(ext_part_sector == 0 \|\| !is_extended (pt->sys_ind)) ) {
	135	print_one_part (pt, ext_part_sector, part_num);
	136	}
	137
	138	/* Reverse engr the fdisk part# assignment rule! */
	139	if ((ext_part_sector == 0) \|\|
	140	(pt->sys_ind != 0 && !is_extended (pt->sys_ind)) ) {
	141	part_num++;
	142	}
	143	}
	144
	145	/* Follows the extended partitions */
	146	pt = (dos_partition_t *) (buffer + DOS_PART_TBL_OFFSET);
	147	for (i = 0; i < 4; i++, pt++) {
	148	if (is_extended (pt->sys_ind)) {
	149	int lba_start = le32_to_int (pt->start4) + relative;
	150
	151	print_partition_extended (dev_desc, lba_start,
	152	ext_part_sector == 0 ? lba_start
	153	: relative,
	154	part_num);
	155	}
	156	}
	157
	158	return;
	159	}
	160
	161
	162	/* Print a partition that is relative to its Extended partition table
	163	*/
	164	static int get_partition_info_extended (block_dev_desc_t *dev_desc, int ext_part_sector,
	165	int relative, int part_num,
	166	int which_part, disk_partition_t *info)
	167	{
dec049d9	168	ALLOC_CACHE_ALIGN_BUFFER(unsigned char, buffer, dev_desc->blksz);
fe8c2806 WD	169	dos_partition_t *pt;
	170	int i;
	171
	172	if (dev_desc->block_read (dev_desc->dev, ext_part_sector, 1, (ulong *) buffer) != 1) {
	173	printf (" Can't read partition table on %d:%d \n",
	174	dev_desc->dev, ext_part_sector);
	175	return -1;
	176	}
	177	if (buffer[DOS_PART_MAGIC_OFFSET] != 0x55 \|\|
	178	buffer[DOS_PART_MAGIC_OFFSET + 1] != 0xaa) {
	179	printf ("bad MBR sector signature 0x%02x%02x\n",
	180	buffer[DOS_PART_MAGIC_OFFSET],
	181	buffer[DOS_PART_MAGIC_OFFSET + 1]);
	182	return -1;
	183	}
	184
	185	/* Print all primary/logical partitions */
	186	pt = (dos_partition_t *) (buffer + DOS_PART_TBL_OFFSET);
	187	for (i = 0; i < 4; i++, pt++) {
	188	/*
8bde7f77 WD	189	* fdisk does not show the extended partitions that
8bde7f77 WD	190	* are not in the MBR
fe8c2806	191	*/
78f4ca79 DM	192	if (((pt->boot_ind & ~0x80) == 0) &&
78f4ca79 DM	193	(pt->sys_ind != 0) &&
7f70e853 WD	194	(part_num == which_part) &&
7f70e853 WD	195	(is_extended(pt->sys_ind) == 0)) {
fe8c2806 WD	196	info->blksz = 512;
	197	info->start = ext_part_sector + le32_to_int (pt->start4);
	198	info->size = le32_to_int (pt->size4);
	199	switch(dev_desc->if_type) {
	200	case IF_TYPE_IDE:
c7057b52	201	case IF_TYPE_SATA:
fe8c2806	202	case IF_TYPE_ATAPI:
71665528 WD	203	sprintf ((char *)info->name, "hd%c%d",
71665528 WD	204	'a' + dev_desc->dev, part_num);
fe8c2806 WD	205	break;
fe8c2806 WD	206	case IF_TYPE_SCSI:
71665528 WD	207	sprintf ((char *)info->name, "sd%c%d",
71665528 WD	208	'a' + dev_desc->dev, part_num);
fe8c2806 WD	209	break;
fe8c2806 WD	210	case IF_TYPE_USB:
71665528 WD	211	sprintf ((char *)info->name, "usbd%c%d",
71665528 WD	212	'a' + dev_desc->dev, part_num);
fe8c2806 WD	213	break;
fe8c2806 WD	214	case IF_TYPE_DOC:
71665528 WD	215	sprintf ((char *)info->name, "docd%c%d",
71665528 WD	216	'a' + dev_desc->dev, part_num);
fe8c2806 WD	217	break;
fe8c2806 WD	218	default:
71665528 WD	219	sprintf ((char *)info->name, "xx%c%d",
71665528 WD	220	'a' + dev_desc->dev, part_num);
fe8c2806 WD	221	break;
	222	}
	223	/* sprintf(info->type, "%d, pt->sys_ind); */
77ddac94	224	sprintf ((char *)info->type, "U-Boot");
fe8c2806 WD	225	return 0;
	226	}
	227
	228	/* Reverse engr the fdisk part# assignment rule! */
	229	if ((ext_part_sector == 0) \|\|
	230	(pt->sys_ind != 0 && !is_extended (pt->sys_ind)) ) {
	231	part_num++;
	232	}
	233	}
	234
	235	/* Follows the extended partitions */
	236	pt = (dos_partition_t *) (buffer + DOS_PART_TBL_OFFSET);
	237	for (i = 0; i < 4; i++, pt++) {
	238	if (is_extended (pt->sys_ind)) {
	239	int lba_start = le32_to_int (pt->start4) + relative;
	240
	241	return get_partition_info_extended (dev_desc, lba_start,
	242	ext_part_sector == 0 ? lba_start : relative,
	243	part_num, which_part, info);
	244	}
	245	}
	246	return -1;
	247	}
	248
	249	void print_part_dos (block_dev_desc_t *dev_desc)
	250	{
	251	printf ("Partition Start Sector Num Sectors Type\n");
	252	print_partition_extended (dev_desc, 0, 0, 1);
	253	}
	254
	255	int get_partition_info_dos (block_dev_desc_t dev_desc, int part, disk_partition_t info)
	256	{
	257	return get_partition_info_extended (dev_desc, 0, 0, 1, part, info);
	258	}
	259
	260
cde5c64d	261	#endif