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