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