[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 <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 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>
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
	28	*/
	29	static inline int le32_to_int(unsigned char *le32)
	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
304b5711	50	static void print_one_part(dos_partition_t *p, int ext_part_sector,
e2e9b378	51	int part_num, unsigned int disksig)
fe8c2806 WD	52	{
	53	int lba_start = ext_part_sector + le32_to_int (p->start4);
	54	int lba_size = le32_to_int (p->size4);
	55
e2e9b378 SW	56	printf("%3d\t%-10d\t%-10d\t%08x-%02x\t%02x%s%s\n",
e2e9b378 SW	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
fe8c2806 WD	89	int test_part_dos (block_dev_desc_t *dev_desc)
fe8c2806 WD	90	{
dec049d9	91	ALLOC_CACHE_ALIGN_BUFFER(unsigned char, buffer, dev_desc->blksz);
fe8c2806	92
d1efb644 SW	93	if (dev_desc->block_read(dev_desc->dev, 0, 1, (ulong *) buffer) != 1)
	94	return -1;
	95
	96	if (test_block_type(buffer) != DOS_MBR)
	97	return -1;
	98
	99	return 0;
fe8c2806 WD	100	}
	101
	102	/* Print a partition that is relative to its Extended partition table
	103	*/
304b5711 SW	104	static void print_partition_extended(block_dev_desc_t *dev_desc,
304b5711 SW	105	int ext_part_sector, int relative,
e2e9b378	106	int part_num, unsigned int disksig)
fe8c2806	107	{
dec049d9	108	ALLOC_CACHE_ALIGN_BUFFER(unsigned char, buffer, dev_desc->blksz);
fe8c2806 WD	109	dos_partition_t *pt;
	110	int i;
	111
	112	if (dev_desc->block_read(dev_desc->dev, ext_part_sector, 1, (ulong *) buffer) != 1) {
	113	printf (" Can't read partition table on %d:%d \n",
	114	dev_desc->dev, ext_part_sector);
	115	return;
	116	}
7205e407	117	i=test_block_type(buffer);
d1efb644	118	if (i != DOS_MBR) {
fe8c2806 WD	119	printf ("bad MBR sector signature 0x%02x%02x\n",
	120	buffer[DOS_PART_MAGIC_OFFSET],
	121	buffer[DOS_PART_MAGIC_OFFSET + 1]);
	122	return;
	123	}
d1efb644	124
e2e9b378 SW	125	if (!ext_part_sector)
	126	disksig = le32_to_int(&buffer[DOS_PART_DISKSIG_OFFSET]);
	127
fe8c2806 WD	128	/* Print all primary/logical partitions */
	129	pt = (dos_partition_t *) (buffer + DOS_PART_TBL_OFFSET);
	130	for (i = 0; i < 4; i++, pt++) {
	131	/*
8bde7f77	132	* fdisk does not show the extended partitions that
fe8c2806 WD	133	* are not in the MBR
	134	*/
	135
	136	if ((pt->sys_ind != 0) &&
	137	(ext_part_sector == 0 \|\| !is_extended (pt->sys_ind)) ) {
e2e9b378	138	print_one_part(pt, ext_part_sector, part_num, disksig);
fe8c2806 WD	139	}
	140
	141	/* Reverse engr the fdisk part# assignment rule! */
	142	if ((ext_part_sector == 0) \|\|
	143	(pt->sys_ind != 0 && !is_extended (pt->sys_ind)) ) {
	144	part_num++;
	145	}
	146	}
	147
	148	/* Follows the extended partitions */
	149	pt = (dos_partition_t *) (buffer + DOS_PART_TBL_OFFSET);
	150	for (i = 0; i < 4; i++, pt++) {
	151	if (is_extended (pt->sys_ind)) {
	152	int lba_start = le32_to_int (pt->start4) + relative;
	153
304b5711 SW	154	print_partition_extended(dev_desc, lba_start,
304b5711 SW	155	ext_part_sector == 0 ? lba_start : relative,
e2e9b378	156	part_num, disksig);
fe8c2806 WD	157	}
	158	}
	159
	160	return;
	161	}
	162
	163
	164	/* Print a partition that is relative to its Extended partition table
	165	*/
	166	static int get_partition_info_extended (block_dev_desc_t *dev_desc, int ext_part_sector,
	167	int relative, int part_num,
d27b5f93 SW	168	int which_part, disk_partition_t *info,
d27b5f93 SW	169	unsigned int disksig)
fe8c2806	170	{
dec049d9	171	ALLOC_CACHE_ALIGN_BUFFER(unsigned char, buffer, dev_desc->blksz);
fe8c2806 WD	172	dos_partition_t *pt;
fe8c2806 WD	173	int i;
4a36be9b	174	int dos_type;
fe8c2806 WD	175
	176	if (dev_desc->block_read (dev_desc->dev, ext_part_sector, 1, (ulong *) buffer) != 1) {
	177	printf (" Can't read partition table on %d:%d \n",
	178	dev_desc->dev, ext_part_sector);
	179	return -1;
	180	}
	181	if (buffer[DOS_PART_MAGIC_OFFSET] != 0x55 \|\|
	182	buffer[DOS_PART_MAGIC_OFFSET + 1] != 0xaa) {
	183	printf ("bad MBR sector signature 0x%02x%02x\n",
	184	buffer[DOS_PART_MAGIC_OFFSET],
	185	buffer[DOS_PART_MAGIC_OFFSET + 1]);
	186	return -1;
	187	}
	188
d27b5f93 SW	189	#ifdef CONFIG_PARTITION_UUIDS
	190	if (!ext_part_sector)
	191	disksig = le32_to_int(&buffer[DOS_PART_DISKSIG_OFFSET]);
	192	#endif
	193
fe8c2806 WD	194	/* Print all primary/logical partitions */
	195	pt = (dos_partition_t *) (buffer + DOS_PART_TBL_OFFSET);
	196	for (i = 0; i < 4; i++, pt++) {
	197	/*
8bde7f77 WD	198	* fdisk does not show the extended partitions that
8bde7f77 WD	199	* are not in the MBR
fe8c2806	200	*/
78f4ca79 DM	201	if (((pt->boot_ind & ~0x80) == 0) &&
78f4ca79 DM	202	(pt->sys_ind != 0) &&
7f70e853 WD	203	(part_num == which_part) &&
7f70e853 WD	204	(is_extended(pt->sys_ind) == 0)) {
4a36be9b	205	info->blksz = DOS_PART_DEFAULT_SECTOR;
e04350d2 SR	206	info->start = (lbaint_t)(ext_part_sector +
	207	le32_to_int(pt->start4));
	208	info->size = (lbaint_t)le32_to_int(pt->size4);
fe8c2806 WD	209	switch(dev_desc->if_type) {
fe8c2806 WD	210	case IF_TYPE_IDE:
c7057b52	211	case IF_TYPE_SATA:
fe8c2806	212	case IF_TYPE_ATAPI:
71665528 WD	213	sprintf ((char *)info->name, "hd%c%d",
71665528 WD	214	'a' + dev_desc->dev, part_num);
fe8c2806 WD	215	break;
fe8c2806 WD	216	case IF_TYPE_SCSI:
71665528 WD	217	sprintf ((char *)info->name, "sd%c%d",
71665528 WD	218	'a' + dev_desc->dev, part_num);
fe8c2806 WD	219	break;
fe8c2806 WD	220	case IF_TYPE_USB:
71665528 WD	221	sprintf ((char *)info->name, "usbd%c%d",
71665528 WD	222	'a' + dev_desc->dev, part_num);
fe8c2806 WD	223	break;
fe8c2806 WD	224	case IF_TYPE_DOC:
71665528 WD	225	sprintf ((char *)info->name, "docd%c%d",
71665528 WD	226	'a' + dev_desc->dev, part_num);
fe8c2806 WD	227	break;
fe8c2806 WD	228	default:
71665528 WD	229	sprintf ((char *)info->name, "xx%c%d",
71665528 WD	230	'a' + dev_desc->dev, part_num);
fe8c2806 WD	231	break;
	232	}
	233	/* sprintf(info->type, "%d, pt->sys_ind); */
77ddac94	234	sprintf ((char *)info->type, "U-Boot");
40e0e568	235	info->bootable = is_bootable(pt);
d27b5f93 SW	236	#ifdef CONFIG_PARTITION_UUIDS
	237	sprintf(info->uuid, "%08x-%02x", disksig, part_num);
	238	#endif
fe8c2806 WD	239	return 0;
	240	}
	241
	242	/* Reverse engr the fdisk part# assignment rule! */
	243	if ((ext_part_sector == 0) \|\|
	244	(pt->sys_ind != 0 && !is_extended (pt->sys_ind)) ) {
	245	part_num++;
	246	}
	247	}
	248
	249	/* Follows the extended partitions */
	250	pt = (dos_partition_t *) (buffer + DOS_PART_TBL_OFFSET);
	251	for (i = 0; i < 4; i++, pt++) {
	252	if (is_extended (pt->sys_ind)) {
	253	int lba_start = le32_to_int (pt->start4) + relative;
	254
	255	return get_partition_info_extended (dev_desc, lba_start,
	256	ext_part_sector == 0 ? lba_start : relative,
d27b5f93	257	part_num, which_part, info, disksig);
fe8c2806 WD	258	}
fe8c2806 WD	259	}
4a36be9b DD	260
	261	/* Check for DOS PBR if no partition is found */
	262	dos_type = test_block_type(buffer);
	263
	264	if (dos_type == DOS_PBR) {
	265	info->start = 0;
	266	info->size = dev_desc->lba;
	267	info->blksz = DOS_PART_DEFAULT_SECTOR;
	268	info->bootable = 0;
	269	sprintf ((char *)info->type, "U-Boot");
	270	#ifdef CONFIG_PARTITION_UUIDS
	271	info->uuid[0] = 0;
	272	#endif
	273	return 0;
	274	}
	275
fe8c2806 WD	276	return -1;
	277	}
	278
	279	void print_part_dos (block_dev_desc_t *dev_desc)
	280	{
e2e9b378 SW	281	printf("Part\tStart Sector\tNum Sectors\tUUID\t\tType\n");
e2e9b378 SW	282	print_partition_extended(dev_desc, 0, 0, 1, 0);
fe8c2806 WD	283	}
	284
	285	int get_partition_info_dos (block_dev_desc_t dev_desc, int part, disk_partition_t info)
	286	{
d27b5f93	287	return get_partition_info_extended(dev_desc, 0, 0, 1, part, info, 0);
fe8c2806 WD	288	}
	289
	290
cde5c64d	291	#endif