[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.
 *
 * See file CREDITS for list of people who contributed to this
 * project.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation; either version 2 of
 * the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
 * MA 02111-1307 USA
 */

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

#if ((CONFIG_COMMANDS & CFG_CMD_IDE) || (CONFIG_COMMANDS & CFG_CMD_SCSI)) && defined(CONFIG_DOS_PARTITION)

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

	printf ("%5d\t\t%10d\t%10d\t%2x%s\n",
		part_num, lba_start, lba_size, p->sys_ind,
		(is_extended (p->sys_ind) ? " Extd" : ""));
}


int test_part_dos (block_dev_desc_t *dev_desc)
{
	unsigned char buffer[DEFAULT_SECTOR_SIZE];

	if ((dev_desc->block_read(dev_desc->dev, 0, 1, (ulong *) buffer) != 1) ||
	    (buffer[DOS_PART_MAGIC_OFFSET + 0] != 0x55) ||
	    (buffer[DOS_PART_MAGIC_OFFSET + 1] != 0xaa) ) {
	    	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 char buffer[DEFAULT_SECTOR_SIZE];
	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;
	}
	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;
	}

	/* 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);
		}

		/* 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);
		}
	}

	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 char buffer[DEFAULT_SECTOR_SIZE];
	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;
	}

	/* 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) &&
		    (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_ATAPI:
					sprintf (info->name, "hd%c%d\n", 'a' + dev_desc->dev, part_num);
					break;
				case IF_TYPE_SCSI:
					sprintf (info->name, "sd%c%d\n", 'a' + dev_desc->dev, part_num);
					break;
				case IF_TYPE_USB:
					sprintf (info->name, "usbd%c%d\n", 'a' + dev_desc->dev, part_num);
					break;
				case IF_TYPE_DOC:
					sprintf (info->name, "docd%c%d\n", 'a' + dev_desc->dev, part_num);
					break;
				default:
					sprintf (info->name, "xx%c%d\n", 'a' + dev_desc->dev, part_num);
					break;
			}
			/* sprintf(info->type, "%d, pt->sys_ind); */
			sprintf (info->type, "U-Boot");
			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);
		}
	}
	return -1;
}

void print_part_dos (block_dev_desc_t *dev_desc)
{
	printf ("Partition     Start Sector     Num Sectors     Type\n");
	print_partition_extended (dev_desc, 0, 0, 1);
}

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);
}


#endif	/* (CONFIG_COMMANDS & CFG_CMD_IDE) && CONFIG_DOS_PARTITION */
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	*
	6	* See file CREDITS for list of people who contributed to this
	7	* project.
	8	*
	9	* This program is free software; you can redistribute it and/or
	10	* modify it under the terms of the GNU General Public License as
	11	* published by the Free Software Foundation; either version 2 of
	12	* the License, or (at your option) any later version.
	13	*
	14	* This program is distributed in the hope that it will be useful,
	15	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	16	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	17	* GNU General Public License for more details.
	18	*
	19	* You should have received a copy of the GNU General Public License
	20	* along with this program; if not, write to the Free Software
	21	* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
	22	* MA 02111-1307 USA
	23	*/
	24
	25	/*
	26	* Support for harddisk partitions.
	27	*
	28	* To be compatible with LinuxPPC and Apple we use the standard Apple
	29	* SCSI disk partitioning scheme. For more information see:
	30	* http://developer.apple.com/techpubs/mac/Devices/Devices-126.html#MARKER-14-92
	31	*/
	32
	33	#include <common.h>
	34	#include <command.h>
	35	#include <ide.h>
	36	#include <cmd_disk.h>
	37	#include "part_dos.h"
	38
	39	#if ((CONFIG_COMMANDS & CFG_CMD_IDE) \|\| (CONFIG_COMMANDS & CFG_CMD_SCSI)) && defined(CONFIG_DOS_PARTITION)
	40
	41	/* Convert char[4] in little endian format to the host format integer
	42	*/
	43	static inline int le32_to_int(unsigned char *le32)
	44	{
	45	return ((le32[3] << 24) +
	46	(le32[2] << 16) +
	47	(le32[1] << 8) +
	48	le32[0]
	49	);
	50	}
	51
	52	static inline int is_extended(int part_type)
	53	{
	54	return (part_type == 0x5 \|\|
	55	part_type == 0xf \|\|
	56	part_type == 0x85);
	57	}
	58
	59	static void print_one_part (dos_partition_t *p, int ext_part_sector, int part_num)
	60	{
	61	int lba_start = ext_part_sector + le32_to_int (p->start4);
	62	int lba_size = le32_to_int (p->size4);
	63
	64	printf ("%5d\t\t%10d\t%10d\t%2x%s\n",
65	part_num, lba_start, lba_size, p->sys_ind,
66	(is_extended (p->sys_ind) ? " Extd" : ""));
67	}
68
69
70
71	int test_part_dos (block_dev_desc_t *dev_desc)
72	{
73	unsigned char buffer[DEFAULT_SECTOR_SIZE];
74
75	if ((dev_desc->block_read(dev_desc->dev, 0, 1, (ulong *) buffer) != 1) \|\|
76	(buffer[DOS_PART_MAGIC_OFFSET + 0] != 0x55) \|\|
77	(buffer[DOS_PART_MAGIC_OFFSET + 1] != 0xaa) ) {
78	return (-1);
79	}
80	return (0);
81	}
82
83	/* Print a partition that is relative to its Extended partition table
84	*/
85	static void print_partition_extended (block_dev_desc_t *dev_desc, int ext_part_sector, int relative,
86	int part_num)
87	{
88	unsigned char buffer[DEFAULT_SECTOR_SIZE];
89	dos_partition_t *pt;
90	int i;
91
92	if (dev_desc->block_read(dev_desc->dev, ext_part_sector, 1, (ulong *) buffer) != 1) {
93	printf (" Can't read partition table on %d:%d \n",
94	dev_desc->dev, ext_part_sector);
95	return;
96	}
97	if (buffer[DOS_PART_MAGIC_OFFSET] != 0x55 \|\|
98	buffer[DOS_PART_MAGIC_OFFSET + 1] != 0xaa) {
99	printf ("bad MBR sector signature 0x%02x%02x\n",
100	buffer[DOS_PART_MAGIC_OFFSET],
101	buffer[DOS_PART_MAGIC_OFFSET + 1]);
102	return;
103	}
104
105	/* Print all primary/logical partitions */
106	pt = (dos_partition_t *) (buffer + DOS_PART_TBL_OFFSET);
107	for (i = 0; i < 4; i++, pt++) {
108	/*
109	* fdisk does not show the extended partitions that
110	* are not in the MBR
111	*/
112
113	if ((pt->sys_ind != 0) &&
114	(ext_part_sector == 0 \|\| !is_extended (pt->sys_ind)) ) {
115	print_one_part (pt, ext_part_sector, part_num);
116	}
117
118	/* Reverse engr the fdisk part# assignment rule! */
119	if ((ext_part_sector == 0) \|\|
120	(pt->sys_ind != 0 && !is_extended (pt->sys_ind)) ) {
121	part_num++;
122	}
123	}
124
125	/* Follows the extended partitions */
126	pt = (dos_partition_t *) (buffer + DOS_PART_TBL_OFFSET);
127	for (i = 0; i < 4; i++, pt++) {
128	if (is_extended (pt->sys_ind)) {
129	int lba_start = le32_to_int (pt->start4) + relative;
130
131	print_partition_extended (dev_desc, lba_start,
132	ext_part_sector == 0 ? lba_start
133	: relative,
134	part_num);
135	}
136	}
137
138	return;
139	}
140
141
142	/* Print a partition that is relative to its Extended partition table
143	*/
144	static int get_partition_info_extended (block_dev_desc_t *dev_desc, int ext_part_sector,
145	int relative, int part_num,
146	int which_part, disk_partition_t *info)
147	{
148	unsigned char buffer[DEFAULT_SECTOR_SIZE];
149	dos_partition_t *pt;
150	int i;
151
152	if (dev_desc->block_read (dev_desc->dev, ext_part_sector, 1, (ulong *) buffer) != 1) {
153	printf (" Can't read partition table on %d:%d \n",
154	dev_desc->dev, ext_part_sector);
155	return -1;
156	}
157	if (buffer[DOS_PART_MAGIC_OFFSET] != 0x55 \|\|
158	buffer[DOS_PART_MAGIC_OFFSET + 1] != 0xaa) {
159	printf ("bad MBR sector signature 0x%02x%02x\n",
160	buffer[DOS_PART_MAGIC_OFFSET],
161	buffer[DOS_PART_MAGIC_OFFSET + 1]);
162	return -1;
163	}
164
165	/* Print all primary/logical partitions */
166	pt = (dos_partition_t *) (buffer + DOS_PART_TBL_OFFSET);
167	for (i = 0; i < 4; i++, pt++) {
168	/*
169	* fdisk does not show the extended partitions that
170	* are not in the MBR
171	*/
7f70e853 WD	172	if ((pt->sys_ind != 0) &&
	173	(part_num == which_part) &&
	174	(is_extended(pt->sys_ind) == 0)) {
fe8c2806 WD	175	info->blksz = 512;
	176	info->start = ext_part_sector + le32_to_int (pt->start4);
	177	info->size = le32_to_int (pt->size4);
	178	switch(dev_desc->if_type) {
	179	case IF_TYPE_IDE:
	180	case IF_TYPE_ATAPI:
	181	sprintf (info->name, "hd%c%d\n", 'a' + dev_desc->dev, part_num);
	182	break;
	183	case IF_TYPE_SCSI:
	184	sprintf (info->name, "sd%c%d\n", 'a' + dev_desc->dev, part_num);
	185	break;
	186	case IF_TYPE_USB:
	187	sprintf (info->name, "usbd%c%d\n", 'a' + dev_desc->dev, part_num);
	188	break;
	189	case IF_TYPE_DOC:
	190	sprintf (info->name, "docd%c%d\n", 'a' + dev_desc->dev, part_num);
	191	break;
	192	default:
	193	sprintf (info->name, "xx%c%d\n", 'a' + dev_desc->dev, part_num);
	194	break;
	195	}
	196	/* sprintf(info->type, "%d, pt->sys_ind); */
	197	sprintf (info->type, "U-Boot");
	198	return 0;
	199	}
	200
	201	/* Reverse engr the fdisk part# assignment rule! */
	202	if ((ext_part_sector == 0) \|\|
	203	(pt->sys_ind != 0 && !is_extended (pt->sys_ind)) ) {
	204	part_num++;
	205	}
	206	}
	207
	208	/* Follows the extended partitions */
	209	pt = (dos_partition_t *) (buffer + DOS_PART_TBL_OFFSET);
	210	for (i = 0; i < 4; i++, pt++) {
	211	if (is_extended (pt->sys_ind)) {
	212	int lba_start = le32_to_int (pt->start4) + relative;
	213
	214	return get_partition_info_extended (dev_desc, lba_start,
	215	ext_part_sector == 0 ? lba_start : relative,
	216	part_num, which_part, info);
	217	}
	218	}
	219	return -1;
	220	}
	221
	222	void print_part_dos (block_dev_desc_t *dev_desc)
	223	{
	224	printf ("Partition Start Sector Num Sectors Type\n");
	225	print_partition_extended (dev_desc, 0, 0, 1);
	226	}
	227
	228	int get_partition_info_dos (block_dev_desc_t dev_desc, int part, disk_partition_t info)
	229	{
	230	return get_partition_info_extended (dev_desc, 0, 0, 1, part, info);
	231	}
	232
	233
	234
	235	#endif /* (CONFIG_COMMANDS & CFG_CMD_IDE) && CONFIG_DOS_PARTITION */