[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.
 *
 * 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 "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 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;
	int dos_type;

	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 = 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); */
			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);
		}
	}

	/* 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;
		sprintf ((char *)info->type, "U-Boot");
#ifdef CONFIG_PARTITION_UUIDS
		info->uuid[0] = 0;
#endif
		return 0;
	}

	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	*
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>
fe8c2806 WD	20	#include "part_dos.h"
fe8c2806 WD	21
2c1af9dc	22	#ifdef 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
	27	*/
	28	static inline int le32_to_int(unsigned char *le32)
	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)
	45	{
	46	return p->boot_ind == 0x80;
	47	}
	48
304b5711	49	static void print_one_part(dos_partition_t *p, int ext_part_sector,
e2e9b378	50	int part_num, unsigned int disksig)
fe8c2806 WD	51	{
	52	int lba_start = ext_part_sector + le32_to_int (p->start4);
	53	int lba_size = le32_to_int (p->size4);
	54
e2e9b378 SW	55	printf("%3d\t%-10d\t%-10d\t%08x-%02x\t%02x%s%s\n",
e2e9b378 SW	56	part_num, lba_start, lba_size, disksig, part_num, p->sys_ind,
40e0e568 RH	57	(is_extended(p->sys_ind) ? " Extd" : ""),
40e0e568 RH	58	(is_bootable(p) ? " Boot" : ""));
fe8c2806 WD	59	}
fe8c2806 WD	60
7205e407 WD	61	static int test_block_type(unsigned char *buffer)
7205e407 WD	62	{
9d956e0f EE	63	int slot;
	64	struct dos_partition *p;
	65
7205e407 WD	66	if((buffer[DOS_PART_MAGIC_OFFSET + 0] != 0x55) \|\|
	67	(buffer[DOS_PART_MAGIC_OFFSET + 1] != 0xaa) ) {
	68	return (-1);
	69	} /* no DOS Signature at all */
9d956e0f EE	70	p = (struct dos_partition *)&buffer[DOS_PART_TBL_OFFSET];
	71	for (slot = 0; slot < 3; slot++) {
	72	if (p->boot_ind != 0 && p->boot_ind != 0x80) {
	73	if (!slot &&
	74	(strncmp((char *)&buffer[DOS_PBR_FSTYPE_OFFSET],
	75	"FAT", 3) == 0 \|\|
	76	strncmp((char *)&buffer[DOS_PBR32_FSTYPE_OFFSET],
	77	"FAT32", 5) == 0)) {
	78	return DOS_PBR; /* is PBR */
	79	} else {
	80	return -1;
	81	}
	82	}
66c2d73c	83	}
7205e407 WD	84	return DOS_MBR; /* Is MBR */
	85	}
	86
fe8c2806	87
fe8c2806 WD	88	int test_part_dos (block_dev_desc_t *dev_desc)
fe8c2806 WD	89	{
dec049d9	90	ALLOC_CACHE_ALIGN_BUFFER(unsigned char, buffer, dev_desc->blksz);
fe8c2806	91
d1efb644 SW	92	if (dev_desc->block_read(dev_desc->dev, 0, 1, (ulong *) buffer) != 1)
	93	return -1;
	94
	95	if (test_block_type(buffer) != DOS_MBR)
	96	return -1;
	97
	98	return 0;
fe8c2806 WD	99	}
	100
	101	/* Print a partition that is relative to its Extended partition table
	102	*/
304b5711 SW	103	static void print_partition_extended(block_dev_desc_t *dev_desc,
304b5711 SW	104	int ext_part_sector, int relative,
e2e9b378	105	int part_num, unsigned int disksig)
fe8c2806	106	{
dec049d9	107	ALLOC_CACHE_ALIGN_BUFFER(unsigned char, buffer, dev_desc->blksz);
fe8c2806 WD	108	dos_partition_t *pt;
	109	int i;
	110
	111	if (dev_desc->block_read(dev_desc->dev, ext_part_sector, 1, (ulong *) buffer) != 1) {
	112	printf (" Can't read partition table on %d:%d \n",
	113	dev_desc->dev, ext_part_sector);
	114	return;
	115	}
7205e407	116	i=test_block_type(buffer);
d1efb644	117	if (i != DOS_MBR) {
fe8c2806 WD	118	printf ("bad MBR sector signature 0x%02x%02x\n",
	119	buffer[DOS_PART_MAGIC_OFFSET],
	120	buffer[DOS_PART_MAGIC_OFFSET + 1]);
	121	return;
	122	}
d1efb644	123
e2e9b378 SW	124	if (!ext_part_sector)
	125	disksig = le32_to_int(&buffer[DOS_PART_DISKSIG_OFFSET]);
	126
fe8c2806 WD	127	/* Print all primary/logical partitions */
	128	pt = (dos_partition_t *) (buffer + DOS_PART_TBL_OFFSET);
	129	for (i = 0; i < 4; i++, pt++) {
	130	/*
8bde7f77	131	* fdisk does not show the extended partitions that
fe8c2806 WD	132	* are not in the MBR
	133	*/
	134
	135	if ((pt->sys_ind != 0) &&
	136	(ext_part_sector == 0 \|\| !is_extended (pt->sys_ind)) ) {
e2e9b378	137	print_one_part(pt, ext_part_sector, part_num, disksig);
fe8c2806 WD	138	}
	139
	140	/* Reverse engr the fdisk part# assignment rule! */
	141	if ((ext_part_sector == 0) \|\|
	142	(pt->sys_ind != 0 && !is_extended (pt->sys_ind)) ) {
	143	part_num++;
	144	}
	145	}
	146
	147	/* Follows the extended partitions */
	148	pt = (dos_partition_t *) (buffer + DOS_PART_TBL_OFFSET);
	149	for (i = 0; i < 4; i++, pt++) {
	150	if (is_extended (pt->sys_ind)) {
	151	int lba_start = le32_to_int (pt->start4) + relative;
	152
304b5711 SW	153	print_partition_extended(dev_desc, lba_start,
304b5711 SW	154	ext_part_sector == 0 ? lba_start : relative,
e2e9b378	155	part_num, disksig);
fe8c2806 WD	156	}
	157	}
	158
	159	return;
	160	}
	161
	162
	163	/* Print a partition that is relative to its Extended partition table
	164	*/
	165	static int get_partition_info_extended (block_dev_desc_t *dev_desc, int ext_part_sector,
	166	int relative, int part_num,
d27b5f93 SW	167	int which_part, disk_partition_t *info,
d27b5f93 SW	168	unsigned int disksig)
fe8c2806	169	{
dec049d9	170	ALLOC_CACHE_ALIGN_BUFFER(unsigned char, buffer, dev_desc->blksz);
fe8c2806 WD	171	dos_partition_t *pt;
fe8c2806 WD	172	int i;
4a36be9b	173	int dos_type;
fe8c2806 WD	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)) {
4a36be9b	204	info->blksz = DOS_PART_DEFAULT_SECTOR;
e04350d2 SR	205	info->start = (lbaint_t)(ext_part_sector +
	206	le32_to_int(pt->start4));
	207	info->size = (lbaint_t)le32_to_int(pt->size4);
fe8c2806 WD	208	switch(dev_desc->if_type) {
fe8c2806 WD	209	case IF_TYPE_IDE:
c7057b52	210	case IF_TYPE_SATA:
fe8c2806	211	case IF_TYPE_ATAPI:
71665528 WD	212	sprintf ((char *)info->name, "hd%c%d",
71665528 WD	213	'a' + dev_desc->dev, part_num);
fe8c2806 WD	214	break;
fe8c2806 WD	215	case IF_TYPE_SCSI:
71665528 WD	216	sprintf ((char *)info->name, "sd%c%d",
71665528 WD	217	'a' + dev_desc->dev, part_num);
fe8c2806 WD	218	break;
fe8c2806 WD	219	case IF_TYPE_USB:
71665528 WD	220	sprintf ((char *)info->name, "usbd%c%d",
71665528 WD	221	'a' + dev_desc->dev, part_num);
fe8c2806 WD	222	break;
fe8c2806 WD	223	case IF_TYPE_DOC:
71665528 WD	224	sprintf ((char *)info->name, "docd%c%d",
71665528 WD	225	'a' + dev_desc->dev, part_num);
fe8c2806 WD	226	break;
fe8c2806 WD	227	default:
71665528 WD	228	sprintf ((char *)info->name, "xx%c%d",
71665528 WD	229	'a' + dev_desc->dev, part_num);
fe8c2806 WD	230	break;
	231	}
	232	/* sprintf(info->type, "%d, pt->sys_ind); */
77ddac94	233	sprintf ((char *)info->type, "U-Boot");
40e0e568	234	info->bootable = is_bootable(pt);
d27b5f93 SW	235	#ifdef CONFIG_PARTITION_UUIDS
	236	sprintf(info->uuid, "%08x-%02x", disksig, part_num);
	237	#endif
fe8c2806 WD	238	return 0;
	239	}
	240
	241	/* Reverse engr the fdisk part# assignment rule! */
	242	if ((ext_part_sector == 0) \|\|
	243	(pt->sys_ind != 0 && !is_extended (pt->sys_ind)) ) {
	244	part_num++;
	245	}
	246	}
	247
	248	/* Follows the extended partitions */
	249	pt = (dos_partition_t *) (buffer + DOS_PART_TBL_OFFSET);
	250	for (i = 0; i < 4; i++, pt++) {
	251	if (is_extended (pt->sys_ind)) {
	252	int lba_start = le32_to_int (pt->start4) + relative;
	253
	254	return get_partition_info_extended (dev_desc, lba_start,
	255	ext_part_sector == 0 ? lba_start : relative,
d27b5f93	256	part_num, which_part, info, disksig);
fe8c2806 WD	257	}
fe8c2806 WD	258	}
4a36be9b DD	259
	260	/* Check for DOS PBR if no partition is found */
	261	dos_type = test_block_type(buffer);
	262
	263	if (dos_type == DOS_PBR) {
	264	info->start = 0;
	265	info->size = dev_desc->lba;
	266	info->blksz = DOS_PART_DEFAULT_SECTOR;
	267	info->bootable = 0;
	268	sprintf ((char *)info->type, "U-Boot");
	269	#ifdef CONFIG_PARTITION_UUIDS
	270	info->uuid[0] = 0;
	271	#endif
	272	return 0;
	273	}
	274
fe8c2806 WD	275	return -1;
	276	}
	277
	278	void print_part_dos (block_dev_desc_t *dev_desc)
	279	{
e2e9b378 SW	280	printf("Part\tStart Sector\tNum Sectors\tUUID\t\tType\n");
e2e9b378 SW	281	print_partition_extended(dev_desc, 0, 0, 1, 0);
fe8c2806 WD	282	}
	283
	284	int get_partition_info_dos (block_dev_desc_t dev_desc, int part, disk_partition_t info)
	285	{
d27b5f93	286	return get_partition_info_extended(dev_desc, 0, 0, 1, part, info, 0);
fe8c2806 WD	287	}
	288
	289
cde5c64d	290	#endif