[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

/* 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;

	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	*
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 WD	23
	24	/* Convert char[4] in little endian format to the host format integer
	25	*/
	26	static inline int le32_to_int(unsigned char *le32)
	27	{
	28	return ((le32[3] << 24) +
	29	(le32[2] << 16) +
	30	(le32[1] << 8) +
	31	le32[0]
	32	);
	33	}
	34
	35	static inline int is_extended(int part_type)
	36	{
	37	return (part_type == 0x5 \|\|
	38	part_type == 0xf \|\|
	39	part_type == 0x85);
	40	}
	41
40e0e568 RH	42	static inline int is_bootable(dos_partition_t *p)
	43	{
	44	return p->boot_ind == 0x80;
	45	}
	46
304b5711	47	static void print_one_part(dos_partition_t *p, int ext_part_sector,
e2e9b378	48	int part_num, unsigned int disksig)
fe8c2806 WD	49	{
	50	int lba_start = ext_part_sector + le32_to_int (p->start4);
	51	int lba_size = le32_to_int (p->size4);
	52
e2e9b378 SW	53	printf("%3d\t%-10d\t%-10d\t%08x-%02x\t%02x%s%s\n",
e2e9b378 SW	54	part_num, lba_start, lba_size, disksig, part_num, p->sys_ind,
40e0e568 RH	55	(is_extended(p->sys_ind) ? " Extd" : ""),
40e0e568 RH	56	(is_bootable(p) ? " Boot" : ""));
fe8c2806 WD	57	}
fe8c2806 WD	58
7205e407 WD	59	static int test_block_type(unsigned char *buffer)
7205e407 WD	60	{
9d956e0f EE	61	int slot;
	62	struct dos_partition *p;
	63
7205e407 WD	64	if((buffer[DOS_PART_MAGIC_OFFSET + 0] != 0x55) \|\|
	65	(buffer[DOS_PART_MAGIC_OFFSET + 1] != 0xaa) ) {
	66	return (-1);
	67	} /* no DOS Signature at all */
9d956e0f EE	68	p = (struct dos_partition *)&buffer[DOS_PART_TBL_OFFSET];
	69	for (slot = 0; slot < 3; slot++) {
	70	if (p->boot_ind != 0 && p->boot_ind != 0x80) {
	71	if (!slot &&
	72	(strncmp((char *)&buffer[DOS_PBR_FSTYPE_OFFSET],
	73	"FAT", 3) == 0 \|\|
	74	strncmp((char *)&buffer[DOS_PBR32_FSTYPE_OFFSET],
	75	"FAT32", 5) == 0)) {
	76	return DOS_PBR; /* is PBR */
	77	} else {
	78	return -1;
	79	}
	80	}
66c2d73c	81	}
7205e407 WD	82	return DOS_MBR; /* Is MBR */
	83	}
	84
fe8c2806	85
fe8c2806 WD	86	int test_part_dos (block_dev_desc_t *dev_desc)
fe8c2806 WD	87	{
dec049d9	88	ALLOC_CACHE_ALIGN_BUFFER(unsigned char, buffer, dev_desc->blksz);
fe8c2806	89
d1efb644 SW	90	if (dev_desc->block_read(dev_desc->dev, 0, 1, (ulong *) buffer) != 1)
	91	return -1;
	92
	93	if (test_block_type(buffer) != DOS_MBR)
	94	return -1;
	95
	96	return 0;
fe8c2806 WD	97	}
	98
	99	/* Print a partition that is relative to its Extended partition table
	100	*/
304b5711 SW	101	static void print_partition_extended(block_dev_desc_t *dev_desc,
304b5711 SW	102	int ext_part_sector, int relative,
e2e9b378	103	int part_num, unsigned int disksig)
fe8c2806	104	{
dec049d9	105	ALLOC_CACHE_ALIGN_BUFFER(unsigned char, buffer, dev_desc->blksz);
fe8c2806 WD	106	dos_partition_t *pt;
	107	int i;
	108
	109	if (dev_desc->block_read(dev_desc->dev, ext_part_sector, 1, (ulong *) buffer) != 1) {
	110	printf (" Can't read partition table on %d:%d \n",
	111	dev_desc->dev, ext_part_sector);
	112	return;
	113	}
7205e407	114	i=test_block_type(buffer);
d1efb644	115	if (i != DOS_MBR) {
fe8c2806 WD	116	printf ("bad MBR sector signature 0x%02x%02x\n",
	117	buffer[DOS_PART_MAGIC_OFFSET],
	118	buffer[DOS_PART_MAGIC_OFFSET + 1]);
	119	return;
	120	}
d1efb644	121
e2e9b378 SW	122	if (!ext_part_sector)
	123	disksig = le32_to_int(&buffer[DOS_PART_DISKSIG_OFFSET]);
	124
fe8c2806 WD	125	/* Print all primary/logical partitions */
	126	pt = (dos_partition_t *) (buffer + DOS_PART_TBL_OFFSET);
	127	for (i = 0; i < 4; i++, pt++) {
	128	/*
8bde7f77	129	* fdisk does not show the extended partitions that
fe8c2806 WD	130	* are not in the MBR
	131	*/
	132
	133	if ((pt->sys_ind != 0) &&
	134	(ext_part_sector == 0 \|\| !is_extended (pt->sys_ind)) ) {
e2e9b378	135	print_one_part(pt, ext_part_sector, part_num, disksig);
fe8c2806 WD	136	}
	137
	138	/* Reverse engr the fdisk part# assignment rule! */
	139	if ((ext_part_sector == 0) \|\|
	140	(pt->sys_ind != 0 && !is_extended (pt->sys_ind)) ) {
	141	part_num++;
	142	}
	143	}
	144
	145	/* Follows the extended partitions */
	146	pt = (dos_partition_t *) (buffer + DOS_PART_TBL_OFFSET);
	147	for (i = 0; i < 4; i++, pt++) {
	148	if (is_extended (pt->sys_ind)) {
	149	int lba_start = le32_to_int (pt->start4) + relative;
	150
304b5711 SW	151	print_partition_extended(dev_desc, lba_start,
304b5711 SW	152	ext_part_sector == 0 ? lba_start : relative,
e2e9b378	153	part_num, disksig);
fe8c2806 WD	154	}
	155	}
	156
	157	return;
	158	}
	159
	160
	161	/* Print a partition that is relative to its Extended partition table
	162	*/
	163	static int get_partition_info_extended (block_dev_desc_t *dev_desc, int ext_part_sector,
	164	int relative, int part_num,
d27b5f93 SW	165	int which_part, disk_partition_t *info,
d27b5f93 SW	166	unsigned int disksig)
fe8c2806	167	{
dec049d9	168	ALLOC_CACHE_ALIGN_BUFFER(unsigned char, buffer, dev_desc->blksz);
fe8c2806 WD	169	dos_partition_t *pt;
	170	int i;
	171
	172	if (dev_desc->block_read (dev_desc->dev, ext_part_sector, 1, (ulong *) buffer) != 1) {
	173	printf (" Can't read partition table on %d:%d \n",
	174	dev_desc->dev, ext_part_sector);
	175	return -1;
	176	}
	177	if (buffer[DOS_PART_MAGIC_OFFSET] != 0x55 \|\|
	178	buffer[DOS_PART_MAGIC_OFFSET + 1] != 0xaa) {
	179	printf ("bad MBR sector signature 0x%02x%02x\n",
	180	buffer[DOS_PART_MAGIC_OFFSET],
	181	buffer[DOS_PART_MAGIC_OFFSET + 1]);
	182	return -1;
	183	}
	184
d27b5f93 SW	185	#ifdef CONFIG_PARTITION_UUIDS
	186	if (!ext_part_sector)
	187	disksig = le32_to_int(&buffer[DOS_PART_DISKSIG_OFFSET]);
	188	#endif
	189
fe8c2806 WD	190	/* Print all primary/logical partitions */
	191	pt = (dos_partition_t *) (buffer + DOS_PART_TBL_OFFSET);
	192	for (i = 0; i < 4; i++, pt++) {
	193	/*
8bde7f77 WD	194	* fdisk does not show the extended partitions that
8bde7f77 WD	195	* are not in the MBR
fe8c2806	196	*/
78f4ca79 DM	197	if (((pt->boot_ind & ~0x80) == 0) &&
78f4ca79 DM	198	(pt->sys_ind != 0) &&
7f70e853 WD	199	(part_num == which_part) &&
7f70e853 WD	200	(is_extended(pt->sys_ind) == 0)) {
fe8c2806 WD	201	info->blksz = 512;
	202	info->start = ext_part_sector + le32_to_int (pt->start4);
	203	info->size = le32_to_int (pt->size4);
	204	switch(dev_desc->if_type) {
	205	case IF_TYPE_IDE:
c7057b52	206	case IF_TYPE_SATA:
fe8c2806	207	case IF_TYPE_ATAPI:
71665528 WD	208	sprintf ((char *)info->name, "hd%c%d",
71665528 WD	209	'a' + dev_desc->dev, part_num);
fe8c2806 WD	210	break;
fe8c2806 WD	211	case IF_TYPE_SCSI:
71665528 WD	212	sprintf ((char *)info->name, "sd%c%d",
71665528 WD	213	'a' + dev_desc->dev, part_num);
fe8c2806 WD	214	break;
fe8c2806 WD	215	case IF_TYPE_USB:
71665528 WD	216	sprintf ((char *)info->name, "usbd%c%d",
71665528 WD	217	'a' + dev_desc->dev, part_num);
fe8c2806 WD	218	break;
fe8c2806 WD	219	case IF_TYPE_DOC:
71665528 WD	220	sprintf ((char *)info->name, "docd%c%d",
71665528 WD	221	'a' + dev_desc->dev, part_num);
fe8c2806 WD	222	break;
fe8c2806 WD	223	default:
71665528 WD	224	sprintf ((char *)info->name, "xx%c%d",
71665528 WD	225	'a' + dev_desc->dev, part_num);
fe8c2806 WD	226	break;
	227	}
	228	/* sprintf(info->type, "%d, pt->sys_ind); */
77ddac94	229	sprintf ((char *)info->type, "U-Boot");
40e0e568	230	info->bootable = is_bootable(pt);
d27b5f93 SW	231	#ifdef CONFIG_PARTITION_UUIDS
	232	sprintf(info->uuid, "%08x-%02x", disksig, part_num);
	233	#endif
fe8c2806 WD	234	return 0;
	235	}
	236
	237	/* Reverse engr the fdisk part# assignment rule! */
	238	if ((ext_part_sector == 0) \|\|
	239	(pt->sys_ind != 0 && !is_extended (pt->sys_ind)) ) {
	240	part_num++;
	241	}
	242	}
	243
	244	/* Follows the extended partitions */
	245	pt = (dos_partition_t *) (buffer + DOS_PART_TBL_OFFSET);
	246	for (i = 0; i < 4; i++, pt++) {
	247	if (is_extended (pt->sys_ind)) {
	248	int lba_start = le32_to_int (pt->start4) + relative;
	249
	250	return get_partition_info_extended (dev_desc, lba_start,
	251	ext_part_sector == 0 ? lba_start : relative,
d27b5f93	252	part_num, which_part, info, disksig);
fe8c2806 WD	253	}
	254	}
	255	return -1;
	256	}
	257
	258	void print_part_dos (block_dev_desc_t *dev_desc)
	259	{
e2e9b378 SW	260	printf("Part\tStart Sector\tNum Sectors\tUUID\t\tType\n");
e2e9b378 SW	261	print_partition_extended(dev_desc, 0, 0, 1, 0);
fe8c2806 WD	262	}
	263
	264	int get_partition_info_dos (block_dev_desc_t dev_desc, int part, disk_partition_t info)
	265	{
d27b5f93	266	return get_partition_info_extended(dev_desc, 0, 0, 1, part, info, 0);
fe8c2806 WD	267	}
	268
	269
cde5c64d	270	#endif