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

/*
 * (C) Copyright 2001
 * Raymond Lo, [email protected]
 * Wolfgang Denk, DENX Software Engineering, [email protected].
 *
 * SPDX-License-Identifier:	GPL-2.0+
 */

/*
 * 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 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->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 */
}


int test_part_dos(struct blk_desc *dev_desc)
{
	ALLOC_CACHE_ALIGN_BUFFER(unsigned char, buffer, dev_desc->blksz);

	if (dev_desc->block_read(dev_desc, 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(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 (dev_desc->block_read(dev_desc, ext_part_sector, 1,
				 (ulong *)buffer) != 1) {
		printf ("** Can't read partition table on %d:" LBAFU " **\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)) {
			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 get_partition_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 (dev_desc->block_read(dev_desc, ext_part_sector, 1,
				 (ulong *)buffer) != 1) {
		printf ("** Can't read partition table on %d:" LBAFU " **\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 = 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);
			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); */
			strcpy((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)) {
			lbaint_t 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);
		}
	}

	/* 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");
#ifdef CONFIG_PARTITION_UUIDS
		info->uuid[0] = 0;
#endif
		return 0;
	}

	return -1;
}

void print_part_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 get_partition_info_dos(struct blk_desc *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, [email protected]
	4	* Wolfgang Denk, DENX Software Engineering, [email protected].
	5	*
1a459660	6	* SPDX-License-Identifier: GPL-2.0+
fe8c2806 WD	7	*/
	8
	9	/*
	10	* Support for harddisk partitions.
	11	*
	12	* To be compatible with LinuxPPC and Apple we use the standard Apple
	13	* SCSI disk partitioning scheme. For more information see:
	14	* http://developer.apple.com/techpubs/mac/Devices/Devices-126.html#MARKER-14-92
	15	*/
	16
	17	#include <common.h>
	18	#include <command.h>
	19	#include <ide.h>
cf92e05c	20	#include <memalign.h>
fe8c2806 WD	21	#include "part_dos.h"
fe8c2806 WD	22
2c1af9dc	23	#ifdef HAVE_BLOCK_DEVICE
fe8c2806	24
4a36be9b DD	25	#define DOS_PART_DEFAULT_SECTOR 512
4a36be9b DD	26
fe8c2806 WD	27	/* Convert char[4] in little endian format to the host format integer
fe8c2806 WD	28	*/
d29892ba	29	static inline unsigned int le32_to_int(unsigned char *le32)
fe8c2806 WD	30	{
	31	return ((le32[3] << 24) +
	32	(le32[2] << 16) +
	33	(le32[1] << 8) +
	34	le32[0]
	35	);
	36	}
	37
	38	static inline int is_extended(int part_type)
	39	{
	40	return (part_type == 0x5 \|\|
	41	part_type == 0xf \|\|
	42	part_type == 0x85);
	43	}
	44
40e0e568 RH	45	static inline int is_bootable(dos_partition_t *p)
	46	{
	47	return p->boot_ind == 0x80;
	48	}
	49
d29892ba	50	static void print_one_part(dos_partition_t *p, lbaint_t ext_part_sector,
e2e9b378	51	int part_num, unsigned int disksig)
fe8c2806	52	{
d29892ba SM	53	lbaint_t lba_start = ext_part_sector + le32_to_int (p->start4);
d29892ba SM	54	lbaint_t lba_size = le32_to_int (p->size4);
fe8c2806	55
d29892ba SM	56	printf("%3d\t%-10" LBAFlength "u\t%-10" LBAFlength
d29892ba SM	57	"u\t%08x-%02x\t%02x%s%s\n",
e2e9b378	58	part_num, lba_start, lba_size, disksig, part_num, p->sys_ind,
40e0e568 RH	59	(is_extended(p->sys_ind) ? " Extd" : ""),
40e0e568 RH	60	(is_bootable(p) ? " Boot" : ""));
fe8c2806 WD	61	}
fe8c2806 WD	62
7205e407 WD	63	static int test_block_type(unsigned char *buffer)
7205e407 WD	64	{
9d956e0f EE	65	int slot;
	66	struct dos_partition *p;
	67
7205e407 WD	68	if((buffer[DOS_PART_MAGIC_OFFSET + 0] != 0x55) \|\|
	69	(buffer[DOS_PART_MAGIC_OFFSET + 1] != 0xaa) ) {
	70	return (-1);
	71	} /* no DOS Signature at all */
9d956e0f EE	72	p = (struct dos_partition *)&buffer[DOS_PART_TBL_OFFSET];
	73	for (slot = 0; slot < 3; slot++) {
	74	if (p->boot_ind != 0 && p->boot_ind != 0x80) {
	75	if (!slot &&
	76	(strncmp((char *)&buffer[DOS_PBR_FSTYPE_OFFSET],
	77	"FAT", 3) == 0 \|\|
	78	strncmp((char *)&buffer[DOS_PBR32_FSTYPE_OFFSET],
	79	"FAT32", 5) == 0)) {
	80	return DOS_PBR; /* is PBR */
	81	} else {
	82	return -1;
	83	}
	84	}
66c2d73c	85	}
7205e407 WD	86	return DOS_MBR; /* Is MBR */
	87	}
	88
fe8c2806	89
4101f687	90	int test_part_dos(struct blk_desc *dev_desc)
fe8c2806	91	{
dec049d9	92	ALLOC_CACHE_ALIGN_BUFFER(unsigned char, buffer, dev_desc->blksz);
fe8c2806	93
7c4213f6	94	if (dev_desc->block_read(dev_desc, 0, 1, (ulong *)buffer) != 1)
d1efb644 SW	95	return -1;
	96
	97	if (test_block_type(buffer) != DOS_MBR)
	98	return -1;
	99
	100	return 0;
fe8c2806 WD	101	}
	102
	103	/* Print a partition that is relative to its Extended partition table
	104	*/
4101f687	105	static void print_partition_extended(struct blk_desc *dev_desc,
d29892ba SM	106	lbaint_t ext_part_sector,
d29892ba SM	107	lbaint_t relative,
e2e9b378	108	int part_num, unsigned int disksig)
fe8c2806	109	{
dec049d9	110	ALLOC_CACHE_ALIGN_BUFFER(unsigned char, buffer, dev_desc->blksz);
fe8c2806 WD	111	dos_partition_t *pt;
	112	int i;
	113
7c4213f6 SW	114	if (dev_desc->block_read(dev_desc, ext_part_sector, 1,
7c4213f6 SW	115	(ulong *)buffer) != 1) {
d29892ba	116	printf (" Can't read partition table on %d:" LBAFU " \n",
fe8c2806 WD	117	dev_desc->dev, ext_part_sector);
	118	return;
	119	}
7205e407	120	i=test_block_type(buffer);
d1efb644	121	if (i != DOS_MBR) {
fe8c2806 WD	122	printf ("bad MBR sector signature 0x%02x%02x\n",
	123	buffer[DOS_PART_MAGIC_OFFSET],
	124	buffer[DOS_PART_MAGIC_OFFSET + 1]);
	125	return;
	126	}
d1efb644	127
e2e9b378 SW	128	if (!ext_part_sector)
	129	disksig = le32_to_int(&buffer[DOS_PART_DISKSIG_OFFSET]);
	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)) ) {
e2e9b378	141	print_one_part(pt, ext_part_sector, part_num, disksig);
fe8c2806 WD	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)) {
d29892ba SM	155	lbaint_t lba_start
d29892ba SM	156	= le32_to_int (pt->start4) + relative;
fe8c2806	157
304b5711 SW	158	print_partition_extended(dev_desc, lba_start,
304b5711 SW	159	ext_part_sector == 0 ? lba_start : relative,
e2e9b378	160	part_num, disksig);
fe8c2806 WD	161	}
	162	}
	163
	164	return;
	165	}
	166
	167
	168	/* Print a partition that is relative to its Extended partition table
	169	*/
4101f687 SG	170	static int get_partition_info_extended(struct blk_desc *dev_desc,
	171	lbaint_t ext_part_sector,
	172	lbaint_t relative, int part_num,
	173	int which_part, disk_partition_t *info,
	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;
fe8c2806 WD	178	int i;
4a36be9b	179	int dos_type;
fe8c2806	180
7c4213f6 SW	181	if (dev_desc->block_read(dev_desc, ext_part_sector, 1,
7c4213f6 SW	182	(ulong *)buffer) != 1) {
d29892ba	183	printf (" Can't read partition table on %d:" LBAFU " \n",
fe8c2806 WD	184	dev_desc->dev, ext_part_sector);
	185	return -1;
	186	}
	187	if (buffer[DOS_PART_MAGIC_OFFSET] != 0x55 \|\|
	188	buffer[DOS_PART_MAGIC_OFFSET + 1] != 0xaa) {
	189	printf ("bad MBR sector signature 0x%02x%02x\n",
	190	buffer[DOS_PART_MAGIC_OFFSET],
	191	buffer[DOS_PART_MAGIC_OFFSET + 1]);
	192	return -1;
	193	}
	194
d27b5f93 SW	195	#ifdef CONFIG_PARTITION_UUIDS
	196	if (!ext_part_sector)
	197	disksig = le32_to_int(&buffer[DOS_PART_DISKSIG_OFFSET]);
	198	#endif
	199
fe8c2806 WD	200	/* Print all primary/logical partitions */
	201	pt = (dos_partition_t *) (buffer + DOS_PART_TBL_OFFSET);
	202	for (i = 0; i < 4; i++, pt++) {
	203	/*
8bde7f77 WD	204	* fdisk does not show the extended partitions that
8bde7f77 WD	205	* are not in the MBR
fe8c2806	206	*/
78f4ca79 DM	207	if (((pt->boot_ind & ~0x80) == 0) &&
78f4ca79 DM	208	(pt->sys_ind != 0) &&
7f70e853 WD	209	(part_num == which_part) &&
7f70e853 WD	210	(is_extended(pt->sys_ind) == 0)) {
4a36be9b	211	info->blksz = DOS_PART_DEFAULT_SECTOR;
e04350d2 SR	212	info->start = (lbaint_t)(ext_part_sector +
	213	le32_to_int(pt->start4));
	214	info->size = (lbaint_t)le32_to_int(pt->size4);
fe8c2806 WD	215	switch(dev_desc->if_type) {
fe8c2806 WD	216	case IF_TYPE_IDE:
c7057b52	217	case IF_TYPE_SATA:
fe8c2806	218	case IF_TYPE_ATAPI:
71665528 WD	219	sprintf ((char *)info->name, "hd%c%d",
71665528 WD	220	'a' + dev_desc->dev, part_num);
fe8c2806 WD	221	break;
fe8c2806 WD	222	case IF_TYPE_SCSI:
71665528 WD	223	sprintf ((char *)info->name, "sd%c%d",
71665528 WD	224	'a' + dev_desc->dev, part_num);
fe8c2806 WD	225	break;
fe8c2806 WD	226	case IF_TYPE_USB:
71665528 WD	227	sprintf ((char *)info->name, "usbd%c%d",
71665528 WD	228	'a' + dev_desc->dev, part_num);
fe8c2806 WD	229	break;
fe8c2806 WD	230	case IF_TYPE_DOC:
71665528 WD	231	sprintf ((char *)info->name, "docd%c%d",
71665528 WD	232	'a' + dev_desc->dev, part_num);
fe8c2806 WD	233	break;
fe8c2806 WD	234	default:
71665528 WD	235	sprintf ((char *)info->name, "xx%c%d",
71665528 WD	236	'a' + dev_desc->dev, part_num);
fe8c2806 WD	237	break;
	238	}
	239	/* sprintf(info->type, "%d, pt->sys_ind); */
192bc694	240	strcpy((char *)info->type, "U-Boot");
40e0e568	241	info->bootable = is_bootable(pt);
d27b5f93 SW	242	#ifdef CONFIG_PARTITION_UUIDS
	243	sprintf(info->uuid, "%08x-%02x", disksig, part_num);
	244	#endif
fe8c2806 WD	245	return 0;
	246	}
	247
	248	/* Reverse engr the fdisk part# assignment rule! */
	249	if ((ext_part_sector == 0) \|\|
	250	(pt->sys_ind != 0 && !is_extended (pt->sys_ind)) ) {
	251	part_num++;
	252	}
	253	}
	254
	255	/* Follows the extended partitions */
	256	pt = (dos_partition_t *) (buffer + DOS_PART_TBL_OFFSET);
	257	for (i = 0; i < 4; i++, pt++) {
	258	if (is_extended (pt->sys_ind)) {
d29892ba SM	259	lbaint_t lba_start
d29892ba SM	260	= le32_to_int (pt->start4) + relative;
fe8c2806 WD	261
	262	return get_partition_info_extended (dev_desc, lba_start,
	263	ext_part_sector == 0 ? lba_start : relative,
d27b5f93	264	part_num, which_part, info, disksig);
fe8c2806 WD	265	}
fe8c2806 WD	266	}
4a36be9b DD	267
	268	/* Check for DOS PBR if no partition is found */
	269	dos_type = test_block_type(buffer);
	270
	271	if (dos_type == DOS_PBR) {
	272	info->start = 0;
	273	info->size = dev_desc->lba;
	274	info->blksz = DOS_PART_DEFAULT_SECTOR;
	275	info->bootable = 0;
192bc694	276	strcpy((char *)info->type, "U-Boot");
4a36be9b DD	277	#ifdef CONFIG_PARTITION_UUIDS
	278	info->uuid[0] = 0;
	279	#endif
	280	return 0;
	281	}
	282
fe8c2806 WD	283	return -1;
	284	}
	285
4101f687	286	void print_part_dos(struct blk_desc *dev_desc)
fe8c2806	287	{
e2e9b378 SW	288	printf("Part\tStart Sector\tNum Sectors\tUUID\t\tType\n");
e2e9b378 SW	289	print_partition_extended(dev_desc, 0, 0, 1, 0);
fe8c2806 WD	290	}
fe8c2806 WD	291
4101f687 SG	292	int get_partition_info_dos(struct blk_desc *dev_desc, int part,
4101f687 SG	293	disk_partition_t *info)
fe8c2806	294	{
d27b5f93	295	return get_partition_info_extended(dev_desc, 0, 0, 1, part, info, 0);
fe8c2806 WD	296	}
	297
	298
cde5c64d	299	#endif