[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"

#ifdef HAVE_BLOCK_DEVICE

/* 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)
{
	int slot;
	struct dos_partition *p;

	if((buffer[DOS_PART_MAGIC_OFFSET + 0] != 0x55) ||
	    (buffer[DOS_PART_MAGIC_OFFSET + 1] != 0xaa) ) {
		return (-1);
	} /* no DOS Signature at all */
	p = (struct dos_partition *)&buffer[DOS_PART_TBL_OFFSET];
	for (slot = 0; slot < 3; slot++) {
		if (p->boot_ind != 0 && p->boot_ind != 0x80) {
			if (!slot &&
			    (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 */
			} else {
				return -1;
			}
		}
	}
	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
2c1af9dc	38	#ifdef HAVE_BLOCK_DEVICE
fe8c2806 WD	39
	40	/* Convert char[4] in little endian format to the host format integer
	41	*/
	42	static inline int le32_to_int(unsigned char *le32)
	43	{
	44	return ((le32[3] << 24) +
	45	(le32[2] << 16) +
	46	(le32[1] << 8) +
	47	le32[0]
	48	);
	49	}
	50
	51	static inline int is_extended(int part_type)
	52	{
	53	return (part_type == 0x5 \|\|
	54	part_type == 0xf \|\|
	55	part_type == 0x85);
	56	}
	57
40e0e568 RH	58	static inline int is_bootable(dos_partition_t *p)
	59	{
	60	return p->boot_ind == 0x80;
	61	}
	62
304b5711	63	static void print_one_part(dos_partition_t *p, int ext_part_sector,
e2e9b378	64	int part_num, unsigned int disksig)
fe8c2806 WD	65	{
	66	int lba_start = ext_part_sector + le32_to_int (p->start4);
	67	int lba_size = le32_to_int (p->size4);
	68
e2e9b378 SW	69	printf("%3d\t%-10d\t%-10d\t%08x-%02x\t%02x%s%s\n",
e2e9b378 SW	70	part_num, lba_start, lba_size, disksig, part_num, p->sys_ind,
40e0e568 RH	71	(is_extended(p->sys_ind) ? " Extd" : ""),
40e0e568 RH	72	(is_bootable(p) ? " Boot" : ""));
fe8c2806 WD	73	}
fe8c2806 WD	74
7205e407 WD	75	static int test_block_type(unsigned char *buffer)
7205e407 WD	76	{
9d956e0f EE	77	int slot;
	78	struct dos_partition *p;
	79
7205e407 WD	80	if((buffer[DOS_PART_MAGIC_OFFSET + 0] != 0x55) \|\|
	81	(buffer[DOS_PART_MAGIC_OFFSET + 1] != 0xaa) ) {
	82	return (-1);
	83	} /* no DOS Signature at all */
9d956e0f EE	84	p = (struct dos_partition *)&buffer[DOS_PART_TBL_OFFSET];
	85	for (slot = 0; slot < 3; slot++) {
	86	if (p->boot_ind != 0 && p->boot_ind != 0x80) {
	87	if (!slot &&
	88	(strncmp((char *)&buffer[DOS_PBR_FSTYPE_OFFSET],
	89	"FAT", 3) == 0 \|\|
	90	strncmp((char *)&buffer[DOS_PBR32_FSTYPE_OFFSET],
	91	"FAT32", 5) == 0)) {
	92	return DOS_PBR; /* is PBR */
	93	} else {
	94	return -1;
	95	}
	96	}
66c2d73c	97	}
7205e407 WD	98	return DOS_MBR; /* Is MBR */
	99	}
	100
fe8c2806	101
fe8c2806 WD	102	int test_part_dos (block_dev_desc_t *dev_desc)
fe8c2806 WD	103	{
dec049d9	104	ALLOC_CACHE_ALIGN_BUFFER(unsigned char, buffer, dev_desc->blksz);
fe8c2806	105
d1efb644 SW	106	if (dev_desc->block_read(dev_desc->dev, 0, 1, (ulong *) buffer) != 1)
	107	return -1;
	108
	109	if (test_block_type(buffer) != DOS_MBR)
	110	return -1;
	111
	112	return 0;
fe8c2806 WD	113	}
	114
	115	/* Print a partition that is relative to its Extended partition table
	116	*/
304b5711 SW	117	static void print_partition_extended(block_dev_desc_t *dev_desc,
304b5711 SW	118	int ext_part_sector, int relative,
e2e9b378	119	int part_num, unsigned int disksig)
fe8c2806	120	{
dec049d9	121	ALLOC_CACHE_ALIGN_BUFFER(unsigned char, buffer, dev_desc->blksz);
fe8c2806 WD	122	dos_partition_t *pt;
	123	int i;
	124
	125	if (dev_desc->block_read(dev_desc->dev, ext_part_sector, 1, (ulong *) buffer) != 1) {
	126	printf (" Can't read partition table on %d:%d \n",
	127	dev_desc->dev, ext_part_sector);
	128	return;
	129	}
7205e407	130	i=test_block_type(buffer);
d1efb644	131	if (i != DOS_MBR) {
fe8c2806 WD	132	printf ("bad MBR sector signature 0x%02x%02x\n",
	133	buffer[DOS_PART_MAGIC_OFFSET],
	134	buffer[DOS_PART_MAGIC_OFFSET + 1]);
	135	return;
	136	}
d1efb644	137
e2e9b378 SW	138	if (!ext_part_sector)
	139	disksig = le32_to_int(&buffer[DOS_PART_DISKSIG_OFFSET]);
	140
fe8c2806 WD	141	/* Print all primary/logical partitions */
	142	pt = (dos_partition_t *) (buffer + DOS_PART_TBL_OFFSET);
	143	for (i = 0; i < 4; i++, pt++) {
	144	/*
8bde7f77	145	* fdisk does not show the extended partitions that
fe8c2806 WD	146	* are not in the MBR
	147	*/
	148
	149	if ((pt->sys_ind != 0) &&
	150	(ext_part_sector == 0 \|\| !is_extended (pt->sys_ind)) ) {
e2e9b378	151	print_one_part(pt, ext_part_sector, part_num, disksig);
fe8c2806 WD	152	}
	153
	154	/* Reverse engr the fdisk part# assignment rule! */
	155	if ((ext_part_sector == 0) \|\|
	156	(pt->sys_ind != 0 && !is_extended (pt->sys_ind)) ) {
	157	part_num++;
	158	}
	159	}
	160
	161	/* Follows the extended partitions */
	162	pt = (dos_partition_t *) (buffer + DOS_PART_TBL_OFFSET);
	163	for (i = 0; i < 4; i++, pt++) {
	164	if (is_extended (pt->sys_ind)) {
	165	int lba_start = le32_to_int (pt->start4) + relative;
	166
304b5711 SW	167	print_partition_extended(dev_desc, lba_start,
304b5711 SW	168	ext_part_sector == 0 ? lba_start : relative,
e2e9b378	169	part_num, disksig);
fe8c2806 WD	170	}
	171	}
	172
	173	return;
	174	}
	175
	176
	177	/* Print a partition that is relative to its Extended partition table
	178	*/
	179	static int get_partition_info_extended (block_dev_desc_t *dev_desc, int ext_part_sector,
	180	int relative, int part_num,
d27b5f93 SW	181	int which_part, disk_partition_t *info,
d27b5f93 SW	182	unsigned int disksig)
fe8c2806	183	{
dec049d9	184	ALLOC_CACHE_ALIGN_BUFFER(unsigned char, buffer, dev_desc->blksz);
fe8c2806 WD	185	dos_partition_t *pt;
	186	int i;
	187
	188	if (dev_desc->block_read (dev_desc->dev, ext_part_sector, 1, (ulong *) buffer) != 1) {
	189	printf (" Can't read partition table on %d:%d \n",
	190	dev_desc->dev, ext_part_sector);
	191	return -1;
	192	}
	193	if (buffer[DOS_PART_MAGIC_OFFSET] != 0x55 \|\|
	194	buffer[DOS_PART_MAGIC_OFFSET + 1] != 0xaa) {
	195	printf ("bad MBR sector signature 0x%02x%02x\n",
	196	buffer[DOS_PART_MAGIC_OFFSET],
	197	buffer[DOS_PART_MAGIC_OFFSET + 1]);
	198	return -1;
	199	}
	200
d27b5f93 SW	201	#ifdef CONFIG_PARTITION_UUIDS
	202	if (!ext_part_sector)
	203	disksig = le32_to_int(&buffer[DOS_PART_DISKSIG_OFFSET]);
	204	#endif
	205
fe8c2806 WD	206	/* Print all primary/logical partitions */
	207	pt = (dos_partition_t *) (buffer + DOS_PART_TBL_OFFSET);
	208	for (i = 0; i < 4; i++, pt++) {
	209	/*
8bde7f77 WD	210	* fdisk does not show the extended partitions that
8bde7f77 WD	211	* are not in the MBR
fe8c2806	212	*/
78f4ca79 DM	213	if (((pt->boot_ind & ~0x80) == 0) &&
78f4ca79 DM	214	(pt->sys_ind != 0) &&
7f70e853 WD	215	(part_num == which_part) &&
7f70e853 WD	216	(is_extended(pt->sys_ind) == 0)) {
fe8c2806 WD	217	info->blksz = 512;
	218	info->start = ext_part_sector + le32_to_int (pt->start4);
	219	info->size = le32_to_int (pt->size4);
	220	switch(dev_desc->if_type) {
	221	case IF_TYPE_IDE:
c7057b52	222	case IF_TYPE_SATA:
fe8c2806	223	case IF_TYPE_ATAPI:
71665528 WD	224	sprintf ((char *)info->name, "hd%c%d",
71665528 WD	225	'a' + dev_desc->dev, part_num);
fe8c2806 WD	226	break;
fe8c2806 WD	227	case IF_TYPE_SCSI:
71665528 WD	228	sprintf ((char *)info->name, "sd%c%d",
71665528 WD	229	'a' + dev_desc->dev, part_num);
fe8c2806 WD	230	break;
fe8c2806 WD	231	case IF_TYPE_USB:
71665528 WD	232	sprintf ((char *)info->name, "usbd%c%d",
71665528 WD	233	'a' + dev_desc->dev, part_num);
fe8c2806 WD	234	break;
fe8c2806 WD	235	case IF_TYPE_DOC:
71665528 WD	236	sprintf ((char *)info->name, "docd%c%d",
71665528 WD	237	'a' + dev_desc->dev, part_num);
fe8c2806 WD	238	break;
fe8c2806 WD	239	default:
71665528 WD	240	sprintf ((char *)info->name, "xx%c%d",
71665528 WD	241	'a' + dev_desc->dev, part_num);
fe8c2806 WD	242	break;
	243	}
	244	/* sprintf(info->type, "%d, pt->sys_ind); */
77ddac94	245	sprintf ((char *)info->type, "U-Boot");
40e0e568	246	info->bootable = is_bootable(pt);
d27b5f93 SW	247	#ifdef CONFIG_PARTITION_UUIDS
	248	sprintf(info->uuid, "%08x-%02x", disksig, part_num);
	249	#endif
fe8c2806 WD	250	return 0;
	251	}
	252
	253	/* Reverse engr the fdisk part# assignment rule! */
	254	if ((ext_part_sector == 0) \|\|
	255	(pt->sys_ind != 0 && !is_extended (pt->sys_ind)) ) {
	256	part_num++;
	257	}
	258	}
	259
	260	/* Follows the extended partitions */
	261	pt = (dos_partition_t *) (buffer + DOS_PART_TBL_OFFSET);
	262	for (i = 0; i < 4; i++, pt++) {
	263	if (is_extended (pt->sys_ind)) {
	264	int lba_start = le32_to_int (pt->start4) + relative;
	265
	266	return get_partition_info_extended (dev_desc, lba_start,
	267	ext_part_sector == 0 ? lba_start : relative,
d27b5f93	268	part_num, which_part, info, disksig);
fe8c2806 WD	269	}
	270	}
	271	return -1;
	272	}
	273
	274	void print_part_dos (block_dev_desc_t *dev_desc)
	275	{
e2e9b378 SW	276	printf("Part\tStart Sector\tNum Sectors\tUUID\t\tType\n");
e2e9b378 SW	277	print_partition_extended(dev_desc, 0, 0, 1, 0);
fe8c2806 WD	278	}
	279
	280	int get_partition_info_dos (block_dev_desc_t dev_desc, int part, disk_partition_t info)
	281	{
d27b5f93	282	return get_partition_info_extended(dev_desc, 0, 0, 1, part, info, 0);
fe8c2806 WD	283	}
	284
	285
cde5c64d	286	#endif