[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 inline int is_bootable(dos_partition_t *p)
{
	return p->boot_ind == 0x80;
}

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

	printf("%3d\t%-10d\t%-10d\t%08x-%02x\t%02x%s%s\n",
		part_num, lba_start, lba_size, disksig, part_num, p->sys_ind,
		(is_extended(p->sys_ind) ? " Extd" : ""),
		(is_bootable(p) ? " Boot" : ""));
}

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)
		return -1;

	if (test_block_type(buffer) != DOS_MBR)
		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 int disksig)
{
	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 != DOS_MBR) {
		printf ("bad MBR sector signature 0x%02x%02x\n",
			buffer[DOS_PART_MAGIC_OFFSET],
			buffer[DOS_PART_MAGIC_OFFSET + 1]);
		return;
	}

	if (!ext_part_sector)
		disksig = le32_to_int(&buffer[DOS_PART_DISKSIG_OFFSET]);

	/* 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, disksig);
		}

		/* 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, disksig);
		}
	}

	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 int disksig)
{
	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;
	}

#ifdef CONFIG_PARTITION_UUIDS
	if (!ext_part_sector)
		disksig = le32_to_int(&buffer[DOS_PART_DISKSIG_OFFSET]);
#endif

	/* 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");
			info->bootable = is_bootable(pt);
#ifdef CONFIG_PARTITION_UUIDS
			sprintf(info->uuid, "%08x-%02x", disksig, part_num);
#endif
			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, disksig);
		}
	}
	return -1;
}

void print_part_dos (block_dev_desc_t *dev_desc)
{
	printf("Part\tStart Sector\tNum Sectors\tUUID\t\tType\n");
	print_partition_extended(dev_desc, 0, 0, 1, 0);
}

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, 0);
}


#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
40e0e568 RH	63	static inline int is_bootable(dos_partition_t *p)
	64	{
	65	return p->boot_ind == 0x80;
	66	}
	67
304b5711	68	static void print_one_part(dos_partition_t *p, int ext_part_sector,
e2e9b378	69	int part_num, unsigned int disksig)
fe8c2806 WD	70	{
	71	int lba_start = ext_part_sector + le32_to_int (p->start4);
	72	int lba_size = le32_to_int (p->size4);
	73
e2e9b378 SW	74	printf("%3d\t%-10d\t%-10d\t%08x-%02x\t%02x%s%s\n",
e2e9b378 SW	75	part_num, lba_start, lba_size, disksig, part_num, p->sys_ind,
40e0e568 RH	76	(is_extended(p->sys_ind) ? " Extd" : ""),
40e0e568 RH	77	(is_bootable(p) ? " Boot" : ""));
fe8c2806 WD	78	}
fe8c2806 WD	79
7205e407 WD	80	static int test_block_type(unsigned char *buffer)
	81	{
	82	if((buffer[DOS_PART_MAGIC_OFFSET + 0] != 0x55) \|\|
	83	(buffer[DOS_PART_MAGIC_OFFSET + 1] != 0xaa) ) {
	84	return (-1);
	85	} /* no DOS Signature at all */
66c2d73c WD	86	if (strncmp((char *)&buffer[DOS_PBR_FSTYPE_OFFSET],"FAT",3)==0 \|\|
66c2d73c WD	87	strncmp((char *)&buffer[DOS_PBR32_FSTYPE_OFFSET],"FAT32",5)==0) {
7205e407	88	return DOS_PBR; /* is PBR */
66c2d73c	89	}
7205e407 WD	90	return DOS_MBR; /* Is MBR */
	91	}
	92
fe8c2806	93
fe8c2806 WD	94	int test_part_dos (block_dev_desc_t *dev_desc)
fe8c2806 WD	95	{
dec049d9	96	ALLOC_CACHE_ALIGN_BUFFER(unsigned char, buffer, dev_desc->blksz);
fe8c2806	97
d1efb644 SW	98	if (dev_desc->block_read(dev_desc->dev, 0, 1, (ulong *) buffer) != 1)
	99	return -1;
	100
	101	if (test_block_type(buffer) != DOS_MBR)
	102	return -1;
	103
	104	return 0;
fe8c2806 WD	105	}
	106
	107	/* Print a partition that is relative to its Extended partition table
	108	*/
304b5711 SW	109	static void print_partition_extended(block_dev_desc_t *dev_desc,
304b5711 SW	110	int ext_part_sector, int relative,
e2e9b378	111	int part_num, unsigned int disksig)
fe8c2806	112	{
dec049d9	113	ALLOC_CACHE_ALIGN_BUFFER(unsigned char, buffer, dev_desc->blksz);
fe8c2806 WD	114	dos_partition_t *pt;
	115	int i;
	116
	117	if (dev_desc->block_read(dev_desc->dev, ext_part_sector, 1, (ulong *) buffer) != 1) {
	118	printf (" Can't read partition table on %d:%d \n",
	119	dev_desc->dev, ext_part_sector);
	120	return;
	121	}
7205e407	122	i=test_block_type(buffer);
d1efb644	123	if (i != DOS_MBR) {
fe8c2806 WD	124	printf ("bad MBR sector signature 0x%02x%02x\n",
	125	buffer[DOS_PART_MAGIC_OFFSET],
	126	buffer[DOS_PART_MAGIC_OFFSET + 1]);
	127	return;
	128	}
d1efb644	129
e2e9b378 SW	130	if (!ext_part_sector)
	131	disksig = le32_to_int(&buffer[DOS_PART_DISKSIG_OFFSET]);
	132
fe8c2806 WD	133	/* Print all primary/logical partitions */
	134	pt = (dos_partition_t *) (buffer + DOS_PART_TBL_OFFSET);
	135	for (i = 0; i < 4; i++, pt++) {
	136	/*
8bde7f77	137	* fdisk does not show the extended partitions that
fe8c2806 WD	138	* are not in the MBR
	139	*/
	140
	141	if ((pt->sys_ind != 0) &&
	142	(ext_part_sector == 0 \|\| !is_extended (pt->sys_ind)) ) {
e2e9b378	143	print_one_part(pt, ext_part_sector, part_num, disksig);
fe8c2806 WD	144	}
	145
	146	/* Reverse engr the fdisk part# assignment rule! */
	147	if ((ext_part_sector == 0) \|\|
	148	(pt->sys_ind != 0 && !is_extended (pt->sys_ind)) ) {
	149	part_num++;
	150	}
	151	}
	152
	153	/* Follows the extended partitions */
	154	pt = (dos_partition_t *) (buffer + DOS_PART_TBL_OFFSET);
	155	for (i = 0; i < 4; i++, pt++) {
	156	if (is_extended (pt->sys_ind)) {
	157	int lba_start = le32_to_int (pt->start4) + relative;
	158
304b5711 SW	159	print_partition_extended(dev_desc, lba_start,
304b5711 SW	160	ext_part_sector == 0 ? lba_start : relative,
e2e9b378	161	part_num, disksig);
fe8c2806 WD	162	}
	163	}
	164
	165	return;
	166	}
	167
	168
	169	/* Print a partition that is relative to its Extended partition table
	170	*/
	171	static int get_partition_info_extended (block_dev_desc_t *dev_desc, int ext_part_sector,
	172	int relative, int part_num,
d27b5f93 SW	173	int which_part, disk_partition_t *info,
d27b5f93 SW	174	unsigned int disksig)
fe8c2806	175	{
dec049d9	176	ALLOC_CACHE_ALIGN_BUFFER(unsigned char, buffer, dev_desc->blksz);
fe8c2806 WD	177	dos_partition_t *pt;
	178	int i;
	179
	180	if (dev_desc->block_read (dev_desc->dev, ext_part_sector, 1, (ulong *) buffer) != 1) {
	181	printf (" Can't read partition table on %d:%d \n",
	182	dev_desc->dev, ext_part_sector);
	183	return -1;
	184	}
	185	if (buffer[DOS_PART_MAGIC_OFFSET] != 0x55 \|\|
	186	buffer[DOS_PART_MAGIC_OFFSET + 1] != 0xaa) {
	187	printf ("bad MBR sector signature 0x%02x%02x\n",
	188	buffer[DOS_PART_MAGIC_OFFSET],
	189	buffer[DOS_PART_MAGIC_OFFSET + 1]);
	190	return -1;
	191	}
	192
d27b5f93 SW	193	#ifdef CONFIG_PARTITION_UUIDS
	194	if (!ext_part_sector)
	195	disksig = le32_to_int(&buffer[DOS_PART_DISKSIG_OFFSET]);
	196	#endif
	197
fe8c2806 WD	198	/* Print all primary/logical partitions */
	199	pt = (dos_partition_t *) (buffer + DOS_PART_TBL_OFFSET);
	200	for (i = 0; i < 4; i++, pt++) {
	201	/*
8bde7f77 WD	202	* fdisk does not show the extended partitions that
8bde7f77 WD	203	* are not in the MBR
fe8c2806	204	*/
78f4ca79 DM	205	if (((pt->boot_ind & ~0x80) == 0) &&
78f4ca79 DM	206	(pt->sys_ind != 0) &&
7f70e853 WD	207	(part_num == which_part) &&
7f70e853 WD	208	(is_extended(pt->sys_ind) == 0)) {
fe8c2806 WD	209	info->blksz = 512;
	210	info->start = ext_part_sector + le32_to_int (pt->start4);
	211	info->size = le32_to_int (pt->size4);
	212	switch(dev_desc->if_type) {
	213	case IF_TYPE_IDE:
c7057b52	214	case IF_TYPE_SATA:
fe8c2806	215	case IF_TYPE_ATAPI:
71665528 WD	216	sprintf ((char *)info->name, "hd%c%d",
71665528 WD	217	'a' + dev_desc->dev, part_num);
fe8c2806 WD	218	break;
fe8c2806 WD	219	case IF_TYPE_SCSI:
71665528 WD	220	sprintf ((char *)info->name, "sd%c%d",
71665528 WD	221	'a' + dev_desc->dev, part_num);
fe8c2806 WD	222	break;
fe8c2806 WD	223	case IF_TYPE_USB:
71665528 WD	224	sprintf ((char *)info->name, "usbd%c%d",
71665528 WD	225	'a' + dev_desc->dev, part_num);
fe8c2806 WD	226	break;
fe8c2806 WD	227	case IF_TYPE_DOC:
71665528 WD	228	sprintf ((char *)info->name, "docd%c%d",
71665528 WD	229	'a' + dev_desc->dev, part_num);
fe8c2806 WD	230	break;
fe8c2806 WD	231	default:
71665528 WD	232	sprintf ((char *)info->name, "xx%c%d",
71665528 WD	233	'a' + dev_desc->dev, part_num);
fe8c2806 WD	234	break;
	235	}
	236	/* sprintf(info->type, "%d, pt->sys_ind); */
77ddac94	237	sprintf ((char *)info->type, "U-Boot");
40e0e568	238	info->bootable = is_bootable(pt);
d27b5f93 SW	239	#ifdef CONFIG_PARTITION_UUIDS
	240	sprintf(info->uuid, "%08x-%02x", disksig, part_num);
	241	#endif
fe8c2806 WD	242	return 0;
	243	}
	244
	245	/* Reverse engr the fdisk part# assignment rule! */
	246	if ((ext_part_sector == 0) \|\|
	247	(pt->sys_ind != 0 && !is_extended (pt->sys_ind)) ) {
	248	part_num++;
	249	}
	250	}
	251
	252	/* Follows the extended partitions */
	253	pt = (dos_partition_t *) (buffer + DOS_PART_TBL_OFFSET);
	254	for (i = 0; i < 4; i++, pt++) {
	255	if (is_extended (pt->sys_ind)) {
	256	int lba_start = le32_to_int (pt->start4) + relative;
	257
	258	return get_partition_info_extended (dev_desc, lba_start,
	259	ext_part_sector == 0 ? lba_start : relative,
d27b5f93	260	part_num, which_part, info, disksig);
fe8c2806 WD	261	}
	262	}
	263	return -1;
	264	}
	265
	266	void print_part_dos (block_dev_desc_t *dev_desc)
	267	{
e2e9b378 SW	268	printf("Part\tStart Sector\tNum Sectors\tUUID\t\tType\n");
e2e9b378 SW	269	print_partition_extended(dev_desc, 0, 0, 1, 0);
fe8c2806 WD	270	}
	271
	272	int get_partition_info_dos (block_dev_desc_t dev_desc, int part, disk_partition_t info)
	273	{
d27b5f93	274	return get_partition_info_extended(dev_desc, 0, 0, 1, part, info, 0);
fe8c2806 WD	275	}
	276
	277
cde5c64d	278	#endif