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

// SPDX-License-Identifier: GPL-2.0+
/*
 * (C) Copyright 2001
 * Raymond Lo, lo@routefree.com
 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
 */

/*
 * 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 <memalign.h>
#include "part_dos.h"

#ifdef CONFIG_HAVE_BLOCK_DEVICE

#define DOS_PART_DEFAULT_SECTOR 512

/* Convert char[4] in little endian format to the host format integer
 */
static inline unsigned 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->sys_ind == 0xef) || (p->boot_ind == 0x80);
}

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

	printf("%3d\t%-10" LBAFlength "u\t%-10" LBAFlength
		"u\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 */
}


static int part_test_dos(struct blk_desc *dev_desc)
{
#ifndef CONFIG_SPL_BUILD
	ALLOC_CACHE_ALIGN_BUFFER(legacy_mbr, mbr, 1);

	if (blk_dread(dev_desc, 0, 1, (ulong *)mbr) != 1)
		return -1;

	if (test_block_type((unsigned char *)mbr) != DOS_MBR)
		return -1;

	if (dev_desc->sig_type == SIG_TYPE_NONE &&
	    mbr->unique_mbr_signature != 0) {
		dev_desc->sig_type = SIG_TYPE_MBR;
		dev_desc->mbr_sig = mbr->unique_mbr_signature;
	}
#else
	ALLOC_CACHE_ALIGN_BUFFER(unsigned char, buffer, dev_desc->blksz);

	if (blk_dread(dev_desc, 0, 1, (ulong *)buffer) != 1)
		return -1;

	if (test_block_type(buffer) != DOS_MBR)
		return -1;
#endif

	return 0;
}

/*  Print a partition that is relative to its Extended partition table
 */
static void print_partition_extended(struct blk_desc *dev_desc,
				     lbaint_t ext_part_sector,
				     lbaint_t relative,
				     int part_num, unsigned int disksig)
{
	ALLOC_CACHE_ALIGN_BUFFER(unsigned char, buffer, dev_desc->blksz);
	dos_partition_t *pt;
	int i;

	if (blk_dread(dev_desc, ext_part_sector, 1, (ulong *)buffer) != 1) {
		printf ("** Can't read partition table on %d:" LBAFU " **\n",
			dev_desc->devnum, 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)) {
			lbaint_t 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 part_get_info_extended(struct blk_desc *dev_desc,
				  lbaint_t ext_part_sector, lbaint_t 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;
	int dos_type;

	if (blk_dread(dev_desc, ext_part_sector, 1, (ulong *)buffer) != 1) {
		printf ("** Can't read partition table on %d:" LBAFU " **\n",
			dev_desc->devnum, 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;
	}

#if CONFIG_IS_ENABLED(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) &&
		    (ext_part_sector == 0 || is_extended(pt->sys_ind) == 0)) {
			info->blksz = DOS_PART_DEFAULT_SECTOR;
			info->start = (lbaint_t)(ext_part_sector +
					le32_to_int(pt->start4));
			info->size  = (lbaint_t)le32_to_int(pt->size4);
			part_set_generic_name(dev_desc, part_num,
					      (char *)info->name);
			/* sprintf(info->type, "%d, pt->sys_ind); */
			strcpy((char *)info->type, "U-Boot");
			info->bootable = is_bootable(pt);
#if CONFIG_IS_ENABLED(PARTITION_UUIDS)
			sprintf(info->uuid, "%08x-%02x", disksig, part_num);
#endif
			info->sys_ind = pt->sys_ind;
			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)) {
			lbaint_t lba_start
				= le32_to_int (pt->start4) + relative;

			return part_get_info_extended(dev_desc, lba_start,
				 ext_part_sector == 0 ? lba_start : relative,
				 part_num, which_part, info, disksig);
		}
	}

	/* Check for DOS PBR if no partition is found */
	dos_type = test_block_type(buffer);

	if (dos_type == DOS_PBR) {
		info->start = 0;
		info->size = dev_desc->lba;
		info->blksz = DOS_PART_DEFAULT_SECTOR;
		info->bootable = 0;
		strcpy((char *)info->type, "U-Boot");
#if CONFIG_IS_ENABLED(PARTITION_UUIDS)
		info->uuid[0] = 0;
#endif
		return 0;
	}

	return -1;
}

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

int part_get_info_dos(struct blk_desc *dev_desc, int part,
		      disk_partition_t *info)
{
	return part_get_info_extended(dev_desc, 0, 0, 1, part, info, 0);
}

int is_valid_dos_buf(void *buf)
{
	return test_block_type(buf) == DOS_MBR ? 0 : -1;
}

int write_mbr_partition(struct blk_desc *dev_desc, void *buf)
{
	if (is_valid_dos_buf(buf))
		return -1;

	/* write MBR */
	if (blk_dwrite(dev_desc, 0, 1, buf) != 1) {
		printf("%s: failed writing '%s' (1 blks at 0x0)\n",
		       __func__, "MBR");
		return 1;
	}

	return 0;
}

U_BOOT_PART_TYPE(dos) = {
	.name		= "DOS",
	.part_type	= PART_TYPE_DOS,
	.max_entries	= DOS_ENTRY_NUMBERS,
	.get_info	= part_get_info_ptr(part_get_info_dos),
	.print		= part_print_ptr(part_print_dos),
	.test		= part_test_dos,
};

#endif
Commit	Line	Data
83d290c5	1	// SPDX-License-Identifier: GPL-2.0+
fe8c2806 WD	2	/*
	3	* (C) Copyright 2001
	4	* Raymond Lo, lo@routefree.com
	5	* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
fe8c2806 WD	6	*/
	7
	8	/*
	9	* Support for harddisk partitions.
	10	*
	11	* To be compatible with LinuxPPC and Apple we use the standard Apple
	12	* SCSI disk partitioning scheme. For more information see:
	13	* http://developer.apple.com/techpubs/mac/Devices/Devices-126.html#MARKER-14-92
	14	*/
	15
	16	#include <common.h>
	17	#include <command.h>
	18	#include <ide.h>
cf92e05c	19	#include <memalign.h>
fe8c2806 WD	20	#include "part_dos.h"
fe8c2806 WD	21
1811a928	22	#ifdef CONFIG_HAVE_BLOCK_DEVICE
fe8c2806	23
4a36be9b DD	24	#define DOS_PART_DEFAULT_SECTOR 512
4a36be9b DD	25
fe8c2806 WD	26	/* Convert char[4] in little endian format to the host format integer
fe8c2806 WD	27	*/
d29892ba	28	static inline unsigned int le32_to_int(unsigned char *le32)
fe8c2806 WD	29	{
	30	return ((le32[3] << 24) +
	31	(le32[2] << 16) +
	32	(le32[1] << 8) +
	33	le32[0]
	34	);
	35	}
	36
	37	static inline int is_extended(int part_type)
	38	{
	39	return (part_type == 0x5 \|\|
	40	part_type == 0xf \|\|
	41	part_type == 0x85);
	42	}
	43
40e0e568 RH	44	static inline int is_bootable(dos_partition_t *p)
40e0e568 RH	45	{
eefa0a64	46	return (p->sys_ind == 0xef) \|\| (p->boot_ind == 0x80);
40e0e568 RH	47	}
40e0e568 RH	48
d29892ba	49	static void print_one_part(dos_partition_t *p, lbaint_t ext_part_sector,
e2e9b378	50	int part_num, unsigned int disksig)
fe8c2806	51	{
d29892ba SM	52	lbaint_t lba_start = ext_part_sector + le32_to_int (p->start4);
d29892ba SM	53	lbaint_t lba_size = le32_to_int (p->size4);
fe8c2806	54
d29892ba SM	55	printf("%3d\t%-10" LBAFlength "u\t%-10" LBAFlength
d29892ba SM	56	"u\t%08x-%02x\t%02x%s%s\n",
e2e9b378	57	part_num, lba_start, lba_size, disksig, part_num, p->sys_ind,
40e0e568 RH	58	(is_extended(p->sys_ind) ? " Extd" : ""),
40e0e568 RH	59	(is_bootable(p) ? " Boot" : ""));
fe8c2806 WD	60	}
fe8c2806 WD	61
7205e407 WD	62	static int test_block_type(unsigned char *buffer)
7205e407 WD	63	{
9d956e0f EE	64	int slot;
	65	struct dos_partition *p;
	66
7205e407 WD	67	if((buffer[DOS_PART_MAGIC_OFFSET + 0] != 0x55) \|\|
	68	(buffer[DOS_PART_MAGIC_OFFSET + 1] != 0xaa) ) {
	69	return (-1);
	70	} /* no DOS Signature at all */
9d956e0f EE	71	p = (struct dos_partition *)&buffer[DOS_PART_TBL_OFFSET];
	72	for (slot = 0; slot < 3; slot++) {
	73	if (p->boot_ind != 0 && p->boot_ind != 0x80) {
	74	if (!slot &&
	75	(strncmp((char *)&buffer[DOS_PBR_FSTYPE_OFFSET],
	76	"FAT", 3) == 0 \|\|
	77	strncmp((char *)&buffer[DOS_PBR32_FSTYPE_OFFSET],
	78	"FAT32", 5) == 0)) {
	79	return DOS_PBR; /* is PBR */
	80	} else {
	81	return -1;
	82	}
	83	}
66c2d73c	84	}
7205e407 WD	85	return DOS_MBR; /* Is MBR */
	86	}
	87
fe8c2806	88
084bf4c2	89	static int part_test_dos(struct blk_desc *dev_desc)
fe8c2806	90	{
3ea05205	91	#ifndef CONFIG_SPL_BUILD
8639e34d	92	ALLOC_CACHE_ALIGN_BUFFER(legacy_mbr, mbr, 1);
fe8c2806	93
ff98cb90	94	if (blk_dread(dev_desc, 0, 1, (ulong *)mbr) != 1)
d1efb644 SW	95	return -1;
d1efb644 SW	96
ff98cb90	97	if (test_block_type((unsigned char *)mbr) != DOS_MBR)
d1efb644 SW	98	return -1;
d1efb644 SW	99
ff98cb90 PJ	100	if (dev_desc->sig_type == SIG_TYPE_NONE &&
	101	mbr->unique_mbr_signature != 0) {
	102	dev_desc->sig_type = SIG_TYPE_MBR;
	103	dev_desc->mbr_sig = mbr->unique_mbr_signature;
	104	}
3ea05205 FE	105	#else
	106	ALLOC_CACHE_ALIGN_BUFFER(unsigned char, buffer, dev_desc->blksz);
	107
	108	if (blk_dread(dev_desc, 0, 1, (ulong *)buffer) != 1)
	109	return -1;
	110
	111	if (test_block_type(buffer) != DOS_MBR)
	112	return -1;
	113	#endif
ff98cb90	114
d1efb644	115	return 0;
fe8c2806 WD	116	}
	117
	118	/* Print a partition that is relative to its Extended partition table
	119	*/
4101f687	120	static void print_partition_extended(struct blk_desc *dev_desc,
d29892ba SM	121	lbaint_t ext_part_sector,
d29892ba SM	122	lbaint_t relative,
e2e9b378	123	int part_num, unsigned int disksig)
fe8c2806	124	{
dec049d9	125	ALLOC_CACHE_ALIGN_BUFFER(unsigned char, buffer, dev_desc->blksz);
fe8c2806 WD	126	dos_partition_t *pt;
	127	int i;
	128
2a981dc2	129	if (blk_dread(dev_desc, ext_part_sector, 1, (ulong *)buffer) != 1) {
d29892ba	130	printf (" Can't read partition table on %d:" LBAFU " \n",
bcce53d0	131	dev_desc->devnum, ext_part_sector);
fe8c2806 WD	132	return;
fe8c2806 WD	133	}
7205e407	134	i=test_block_type(buffer);
d1efb644	135	if (i != DOS_MBR) {
fe8c2806 WD	136	printf ("bad MBR sector signature 0x%02x%02x\n",
	137	buffer[DOS_PART_MAGIC_OFFSET],
	138	buffer[DOS_PART_MAGIC_OFFSET + 1]);
	139	return;
	140	}
d1efb644	141
e2e9b378 SW	142	if (!ext_part_sector)
	143	disksig = le32_to_int(&buffer[DOS_PART_DISKSIG_OFFSET]);
	144
fe8c2806 WD	145	/* Print all primary/logical partitions */
	146	pt = (dos_partition_t *) (buffer + DOS_PART_TBL_OFFSET);
	147	for (i = 0; i < 4; i++, pt++) {
	148	/*
8bde7f77	149	* fdisk does not show the extended partitions that
fe8c2806 WD	150	* are not in the MBR
	151	*/
	152
	153	if ((pt->sys_ind != 0) &&
	154	(ext_part_sector == 0 \|\| !is_extended (pt->sys_ind)) ) {
e2e9b378	155	print_one_part(pt, ext_part_sector, part_num, disksig);
fe8c2806 WD	156	}
	157
	158	/* Reverse engr the fdisk part# assignment rule! */
	159	if ((ext_part_sector == 0) \|\|
	160	(pt->sys_ind != 0 && !is_extended (pt->sys_ind)) ) {
	161	part_num++;
	162	}
	163	}
	164
	165	/* Follows the extended partitions */
	166	pt = (dos_partition_t *) (buffer + DOS_PART_TBL_OFFSET);
	167	for (i = 0; i < 4; i++, pt++) {
	168	if (is_extended (pt->sys_ind)) {
d29892ba SM	169	lbaint_t lba_start
d29892ba SM	170	= le32_to_int (pt->start4) + relative;
fe8c2806	171
304b5711 SW	172	print_partition_extended(dev_desc, lba_start,
304b5711 SW	173	ext_part_sector == 0 ? lba_start : relative,
e2e9b378	174	part_num, disksig);
fe8c2806 WD	175	}
	176	}
	177
	178	return;
	179	}
	180
	181
	182	/* Print a partition that is relative to its Extended partition table
	183	*/
3e8bd469 SG	184	static int part_get_info_extended(struct blk_desc *dev_desc,
	185	lbaint_t ext_part_sector, lbaint_t relative,
	186	int part_num, int which_part,
	187	disk_partition_t *info, unsigned int disksig)
fe8c2806	188	{
dec049d9	189	ALLOC_CACHE_ALIGN_BUFFER(unsigned char, buffer, dev_desc->blksz);
fe8c2806 WD	190	dos_partition_t *pt;
fe8c2806 WD	191	int i;
4a36be9b	192	int dos_type;
fe8c2806	193
2a981dc2	194	if (blk_dread(dev_desc, ext_part_sector, 1, (ulong *)buffer) != 1) {
d29892ba	195	printf (" Can't read partition table on %d:" LBAFU " \n",
bcce53d0	196	dev_desc->devnum, ext_part_sector);
fe8c2806 WD	197	return -1;
	198	}
	199	if (buffer[DOS_PART_MAGIC_OFFSET] != 0x55 \|\|
	200	buffer[DOS_PART_MAGIC_OFFSET + 1] != 0xaa) {
	201	printf ("bad MBR sector signature 0x%02x%02x\n",
	202	buffer[DOS_PART_MAGIC_OFFSET],
	203	buffer[DOS_PART_MAGIC_OFFSET + 1]);
	204	return -1;
	205	}
	206
b331cd62	207	#if CONFIG_IS_ENABLED(PARTITION_UUIDS)
d27b5f93 SW	208	if (!ext_part_sector)
	209	disksig = le32_to_int(&buffer[DOS_PART_DISKSIG_OFFSET]);
	210	#endif
	211
fe8c2806 WD	212	/* Print all primary/logical partitions */
	213	pt = (dos_partition_t *) (buffer + DOS_PART_TBL_OFFSET);
	214	for (i = 0; i < 4; i++, pt++) {
	215	/*
8bde7f77 WD	216	* fdisk does not show the extended partitions that
8bde7f77 WD	217	* are not in the MBR
fe8c2806	218	*/
78f4ca79 DM	219	if (((pt->boot_ind & ~0x80) == 0) &&
78f4ca79 DM	220	(pt->sys_ind != 0) &&
7f70e853	221	(part_num == which_part) &&
8f7102cf	222	(ext_part_sector == 0 \|\| is_extended(pt->sys_ind) == 0)) {
4a36be9b	223	info->blksz = DOS_PART_DEFAULT_SECTOR;
e04350d2 SR	224	info->start = (lbaint_t)(ext_part_sector +
	225	le32_to_int(pt->start4));
	226	info->size = (lbaint_t)le32_to_int(pt->size4);
da2ee24d PK	227	part_set_generic_name(dev_desc, part_num,
da2ee24d PK	228	(char *)info->name);
fe8c2806	229	/* sprintf(info->type, "%d, pt->sys_ind); */
192bc694	230	strcpy((char *)info->type, "U-Boot");
40e0e568	231	info->bootable = is_bootable(pt);
b331cd62	232	#if CONFIG_IS_ENABLED(PARTITION_UUIDS)
d27b5f93 SW	233	sprintf(info->uuid, "%08x-%02x", disksig, part_num);
d27b5f93 SW	234	#endif
f0fb4fa7	235	info->sys_ind = pt->sys_ind;
fe8c2806 WD	236	return 0;
	237	}
	238
	239	/* Reverse engr the fdisk part# assignment rule! */
	240	if ((ext_part_sector == 0) \|\|
	241	(pt->sys_ind != 0 && !is_extended (pt->sys_ind)) ) {
	242	part_num++;
	243	}
	244	}
	245
	246	/* Follows the extended partitions */
	247	pt = (dos_partition_t *) (buffer + DOS_PART_TBL_OFFSET);
	248	for (i = 0; i < 4; i++, pt++) {
	249	if (is_extended (pt->sys_ind)) {
d29892ba SM	250	lbaint_t lba_start
d29892ba SM	251	= le32_to_int (pt->start4) + relative;
fe8c2806	252
3e8bd469	253	return part_get_info_extended(dev_desc, lba_start,
fe8c2806	254	ext_part_sector == 0 ? lba_start : relative,
d27b5f93	255	part_num, which_part, info, disksig);
fe8c2806 WD	256	}
fe8c2806 WD	257	}
4a36be9b DD	258
	259	/* Check for DOS PBR if no partition is found */
	260	dos_type = test_block_type(buffer);
	261
	262	if (dos_type == DOS_PBR) {
	263	info->start = 0;
	264	info->size = dev_desc->lba;
	265	info->blksz = DOS_PART_DEFAULT_SECTOR;
	266	info->bootable = 0;
192bc694	267	strcpy((char *)info->type, "U-Boot");
b331cd62	268	#if CONFIG_IS_ENABLED(PARTITION_UUIDS)
4a36be9b DD	269	info->uuid[0] = 0;
	270	#endif
	271	return 0;
	272	}
	273
fe8c2806 WD	274	return -1;
	275	}
	276
084bf4c2	277	void part_print_dos(struct blk_desc *dev_desc)
fe8c2806	278	{
e2e9b378 SW	279	printf("Part\tStart Sector\tNum Sectors\tUUID\t\tType\n");
e2e9b378 SW	280	print_partition_extended(dev_desc, 0, 0, 1, 0);
fe8c2806 WD	281	}
fe8c2806 WD	282
3e8bd469 SG	283	int part_get_info_dos(struct blk_desc *dev_desc, int part,
3e8bd469 SG	284	disk_partition_t *info)
fe8c2806	285	{
3e8bd469	286	return part_get_info_extended(dev_desc, 0, 0, 1, part, info, 0);
fe8c2806 WD	287	}
fe8c2806 WD	288
b6dd69a4 PK	289	int is_valid_dos_buf(void *buf)
	290	{
	291	return test_block_type(buf) == DOS_MBR ? 0 : -1;
	292	}
	293
	294	int write_mbr_partition(struct blk_desc dev_desc, void buf)
	295	{
	296	if (is_valid_dos_buf(buf))
	297	return -1;
	298
	299	/* write MBR */
	300	if (blk_dwrite(dev_desc, 0, 1, buf) != 1) {
	301	printf("%s: failed writing '%s' (1 blks at 0x0)\n",
	302	__func__, "MBR");
	303	return 1;
	304	}
	305
	306	return 0;
	307	}
	308
96e5b03c SG	309	U_BOOT_PART_TYPE(dos) = {
	310	.name = "DOS",
	311	.part_type = PART_TYPE_DOS,
87b8530f	312	.max_entries = DOS_ENTRY_NUMBERS,
3e8bd469	313	.get_info = part_get_info_ptr(part_get_info_dos),
084bf4c2 SG	314	.print = part_print_ptr(part_print_dos),
084bf4c2 SG	315	.test = part_test_dos,
96e5b03c	316	};
fe8c2806	317
cde5c64d	318	#endif