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

/*
 * (C) Copyright 2000
 * Wolfgang Denk, DENX Software Engineering, [email protected].
 *
 * 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 "part_mac.h"

#if defined(CONFIG_CMD_IDE) || \
    defined(CONFIG_CMD_SCSI) || \
    defined(CONFIG_CMD_SATA) || \
    defined(CONFIG_CMD_USB) || \
    defined(CONFIG_MMC) || \
    defined(CONFIG_SYSTEMACE)

/* stdlib.h causes some compatibility problems; should fixe these! -- wd */
#ifndef __ldiv_t_defined
typedef struct {
	long int quot;		/* Quotient	*/
	long int rem;		/* Remainder	*/
} ldiv_t;
extern ldiv_t ldiv (long int __numer, long int __denom);
# define __ldiv_t_defined	1
#endif


static int part_mac_read_ddb (block_dev_desc_t *dev_desc, mac_driver_desc_t *ddb_p);
static int part_mac_read_pdb (block_dev_desc_t *dev_desc, int part, mac_partition_t *pdb_p);

/*
 * Test for a valid MAC partition
 */
int test_part_mac (block_dev_desc_t *dev_desc)
{
	ALLOC_CACHE_ALIGN_BUFFER(mac_driver_desc_t, ddesc, 1);
	ALLOC_CACHE_ALIGN_BUFFER(mac_partition_t, mpart, 1);
	ulong i, n;

	if (part_mac_read_ddb (dev_desc, ddesc)) {
		/* error reading Driver Desriptor Block, or no valid Signature */
		return (-1);
	}

	n = 1;	/* assuming at least one partition */
	for (i=1; i<=n; ++i) {
		if ((dev_desc->block_read(dev_desc->dev, i, 1, (ulong *)mpart) != 1) ||
		    (mpart->signature != MAC_PARTITION_MAGIC) ) {
			return (-1);
		}
		/* update partition count */
		n = mpart->map_count;
	}
	return (0);
}


void print_part_mac (block_dev_desc_t *dev_desc)
{
	ulong i, n;
	ALLOC_CACHE_ALIGN_BUFFER(mac_driver_desc_t, ddesc, 1);
	ALLOC_CACHE_ALIGN_BUFFER(mac_partition_t, mpart, 1);
	ldiv_t mb, gb;

	if (part_mac_read_ddb (dev_desc, ddesc)) {
		/* error reading Driver Desriptor Block, or no valid Signature */
		return;
	}

	n  = ddesc->blk_count;

	mb = ldiv(n, ((1024 * 1024) / ddesc->blk_size)); /* MB */
	/* round to 1 digit */
	mb.rem *= 10 * ddesc->blk_size;
	mb.rem += 512 * 1024;
	mb.rem /= 1024 * 1024;

	gb = ldiv(10 * mb.quot + mb.rem, 10240);
	gb.rem += 512;
	gb.rem /= 1024;


	printf ("Block Size=%d, Number of Blocks=%d, "
		"Total Capacity: %ld.%ld MB = %ld.%ld GB\n"
		"DeviceType=0x%x, DeviceId=0x%x\n\n"
		"   #:                 type name"
		"                   length   base       (size)\n",
		ddesc->blk_size,
		ddesc->blk_count,
		mb.quot, mb.rem, gb.quot, gb.rem,
		ddesc->dev_type, ddesc->dev_id
		);

	n = 1;	/* assuming at least one partition */
	for (i=1; i<=n; ++i) {
		ulong bytes;
		char c;

		printf ("%4ld: ", i);
		if (dev_desc->block_read (dev_desc->dev, i, 1, (ulong *)mpart) != 1) {
			printf ("** Can't read Partition Map on %d:%ld **\n",
				dev_desc->dev, i);
			return;
		}

		if (mpart->signature != MAC_PARTITION_MAGIC) {
			printf ("** Bad Signature on %d:%ld - "
				"expected 0x%04x, got 0x%04x\n",
				dev_desc->dev, i, MAC_PARTITION_MAGIC, mpart->signature);
			return;
		}

		/* update partition count */
		n = mpart->map_count;

		c      = 'k';
		bytes  = mpart->block_count;
		bytes /= (1024 / ddesc->blk_size);  /* kB; assumes blk_size == 512 */
		if (bytes >= 1024) {
			bytes >>= 10;
			c = 'M';
		}
		if (bytes >= 1024) {
			bytes >>= 10;
			c = 'G';
		}

		printf ("%20.32s %-18.32s %10u @ %-10u (%3ld%c)\n",
			mpart->type,
			mpart->name,
			mpart->block_count,
			mpart->start_block,
			bytes, c
			);
	}

	return;
}


/*
 * Read Device Descriptor Block
 */
static int part_mac_read_ddb (block_dev_desc_t *dev_desc, mac_driver_desc_t *ddb_p)
{
	if (dev_desc->block_read(dev_desc->dev, 0, 1, (ulong *)ddb_p) != 1) {
		printf ("** Can't read Driver Desriptor Block **\n");
		return (-1);
	}

	if (ddb_p->signature != MAC_DRIVER_MAGIC) {
#if 0
		printf ("** Bad Signature: expected 0x%04x, got 0x%04x\n",
			MAC_DRIVER_MAGIC, ddb_p->signature);
#endif
		return (-1);
	}
	return (0);
}

/*
 * Read Partition Descriptor Block
 */
static int part_mac_read_pdb (block_dev_desc_t *dev_desc, int part, mac_partition_t *pdb_p)
{
	int n = 1;

	for (;;) {
		/*
		 * We must always read the descritpor block for
		 * partition 1 first since this is the only way to
		 * know how many partitions we have.
		 */
		if (dev_desc->block_read (dev_desc->dev, n, 1, (ulong *)pdb_p) != 1) {
			printf ("** Can't read Partition Map on %d:%d **\n",
				dev_desc->dev, n);
			return (-1);
		}

		if (pdb_p->signature != MAC_PARTITION_MAGIC) {
			printf ("** Bad Signature on %d:%d: "
				"expected 0x%04x, got 0x%04x\n",
				dev_desc->dev, n, MAC_PARTITION_MAGIC, pdb_p->signature);
			return (-1);
		}

		if (n == part)
			return (0);

		if ((part < 1) || (part > pdb_p->map_count)) {
			printf ("** Invalid partition %d:%d [%d:1...%d:%d only]\n",
				dev_desc->dev, part,
				dev_desc->dev,
				dev_desc->dev, pdb_p->map_count);
			return (-1);
		}

		/* update partition count */
		n = part;
	}

	/* NOTREACHED */
}

int get_partition_info_mac (block_dev_desc_t *dev_desc, int part, disk_partition_t *info)
{
	ALLOC_CACHE_ALIGN_BUFFER(mac_driver_desc_t, ddesc, 1);
	ALLOC_CACHE_ALIGN_BUFFER(mac_partition_t, mpart, 1);

	if (part_mac_read_ddb (dev_desc, ddesc)) {
		return (-1);
	}

	info->blksz = ddesc->blk_size;

	if (part_mac_read_pdb (dev_desc, part, mpart)) {
		return (-1);
	}

	info->start = mpart->start_block;
	info->size  = mpart->block_count;
	memcpy (info->type, mpart->type, sizeof(info->type));
	memcpy (info->name, mpart->name, sizeof(info->name));

	return (0);
}

#endif
Commit	Line	Data
fe8c2806 WD	1	/*
	2	* (C) Copyright 2000
	3	* Wolfgang Denk, DENX Software Engineering, [email protected].
	4	*
	5	* See file CREDITS for list of people who contributed to this
	6	* project.
	7	*
	8	* This program is free software; you can redistribute it and/or
	9	* modify it under the terms of the GNU General Public License as
	10	* published by the Free Software Foundation; either version 2 of
	11	* the License, or (at your option) any later version.
	12	*
	13	* This program is distributed in the hope that it will be useful,
	14	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	15	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	16	* GNU General Public License for more details.
	17	*
	18	* You should have received a copy of the GNU General Public License
	19	* along with this program; if not, write to the Free Software
	20	* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
	21	* MA 02111-1307 USA
	22	*/
	23
	24	/*
	25	* Support for harddisk partitions.
	26	*
	27	* To be compatible with LinuxPPC and Apple we use the standard Apple
	28	* SCSI disk partitioning scheme. For more information see:
	29	* http://developer.apple.com/techpubs/mac/Devices/Devices-126.html#MARKER-14-92
	30	*/
	31
	32	#include <common.h>
	33	#include <command.h>
	34	#include <ide.h>
fe8c2806 WD	35	#include "part_mac.h"
fe8c2806 WD	36
7bd2722e MF	37	#if defined(CONFIG_CMD_IDE) \|\| \
	38	defined(CONFIG_CMD_SCSI) \|\| \
	39	defined(CONFIG_CMD_SATA) \|\| \
	40	defined(CONFIG_CMD_USB) \|\| \
	41	defined(CONFIG_MMC) \|\| \
	42	defined(CONFIG_SYSTEMACE)
fe8c2806 WD	43
	44	/* stdlib.h causes some compatibility problems; should fixe these! -- wd */
	45	#ifndef __ldiv_t_defined
	46	typedef struct {
	47	long int quot; /* Quotient */
	48	long int rem; /* Remainder */
	49	} ldiv_t;
	50	extern ldiv_t ldiv (long int __numer, long int __denom);
	51	# define __ldiv_t_defined 1
	52	#endif
	53
	54
	55	static int part_mac_read_ddb (block_dev_desc_t dev_desc, mac_driver_desc_t ddb_p);
	56	static int part_mac_read_pdb (block_dev_desc_t dev_desc, int part, mac_partition_t pdb_p);
	57
	58	/*
	59	* Test for a valid MAC partition
	60	*/
	61	int test_part_mac (block_dev_desc_t *dev_desc)
	62	{
64a08a9f BT	63	ALLOC_CACHE_ALIGN_BUFFER(mac_driver_desc_t, ddesc, 1);
64a08a9f BT	64	ALLOC_CACHE_ALIGN_BUFFER(mac_partition_t, mpart, 1);
fe8c2806 WD	65	ulong i, n;
fe8c2806 WD	66
64a08a9f	67	if (part_mac_read_ddb (dev_desc, ddesc)) {
fe8c2806 WD	68	/* error reading Driver Desriptor Block, or no valid Signature */
	69	return (-1);
	70	}
	71
	72	n = 1; /* assuming at least one partition */
	73	for (i=1; i<=n; ++i) {
64a08a9f BT	74	if ((dev_desc->block_read(dev_desc->dev, i, 1, (ulong *)mpart) != 1) \|\|
64a08a9f BT	75	(mpart->signature != MAC_PARTITION_MAGIC) ) {
fe8c2806 WD	76	return (-1);
	77	}
	78	/* update partition count */
64a08a9f	79	n = mpart->map_count;
fe8c2806 WD	80	}
	81	return (0);
	82	}
	83
	84
	85	void print_part_mac (block_dev_desc_t *dev_desc)
	86	{
	87	ulong i, n;
64a08a9f BT	88	ALLOC_CACHE_ALIGN_BUFFER(mac_driver_desc_t, ddesc, 1);
64a08a9f BT	89	ALLOC_CACHE_ALIGN_BUFFER(mac_partition_t, mpart, 1);
fe8c2806 WD	90	ldiv_t mb, gb;
fe8c2806 WD	91
64a08a9f	92	if (part_mac_read_ddb (dev_desc, ddesc)) {
fe8c2806 WD	93	/* error reading Driver Desriptor Block, or no valid Signature */
	94	return;
	95	}
	96
64a08a9f	97	n = ddesc->blk_count;
fe8c2806	98
64a08a9f	99	mb = ldiv(n, ((1024 * 1024) / ddesc->blk_size)); /* MB */
fe8c2806	100	/* round to 1 digit */
64a08a9f	101	mb.rem = 10 ddesc->blk_size;
fe8c2806 WD	102	mb.rem += 512 * 1024;
	103	mb.rem /= 1024 * 1024;
	104
	105	gb = ldiv(10 * mb.quot + mb.rem, 10240);
	106	gb.rem += 512;
	107	gb.rem /= 1024;
	108
	109
	110	printf ("Block Size=%d, Number of Blocks=%d, "
	111	"Total Capacity: %ld.%ld MB = %ld.%ld GB\n"
	112	"DeviceType=0x%x, DeviceId=0x%x\n\n"
	113	" #: type name"
	114	" length base (size)\n",
64a08a9f BT	115	ddesc->blk_size,
64a08a9f BT	116	ddesc->blk_count,
fe8c2806	117	mb.quot, mb.rem, gb.quot, gb.rem,
64a08a9f	118	ddesc->dev_type, ddesc->dev_id
fe8c2806 WD	119	);
	120
	121	n = 1; /* assuming at least one partition */
	122	for (i=1; i<=n; ++i) {
	123	ulong bytes;
	124	char c;
	125
	126	printf ("%4ld: ", i);
64a08a9f	127	if (dev_desc->block_read (dev_desc->dev, i, 1, (ulong *)mpart) != 1) {
fe8c2806 WD	128	printf (" Can't read Partition Map on %d:%ld \n",
	129	dev_desc->dev, i);
	130	return;
	131	}
	132
64a08a9f	133	if (mpart->signature != MAC_PARTITION_MAGIC) {
fe8c2806 WD	134	printf ("** Bad Signature on %d:%ld - "
fe8c2806 WD	135	"expected 0x%04x, got 0x%04x\n",
64a08a9f	136	dev_desc->dev, i, MAC_PARTITION_MAGIC, mpart->signature);
fe8c2806 WD	137	return;
	138	}
	139
	140	/* update partition count */
64a08a9f	141	n = mpart->map_count;
fe8c2806 WD	142
fe8c2806 WD	143	c = 'k';
64a08a9f BT	144	bytes = mpart->block_count;
64a08a9f BT	145	bytes /= (1024 / ddesc->blk_size); /* kB; assumes blk_size == 512 */
fe8c2806 WD	146	if (bytes >= 1024) {
	147	bytes >>= 10;
	148	c = 'M';
	149	}
	150	if (bytes >= 1024) {
	151	bytes >>= 10;
	152	c = 'G';
	153	}
	154
	155	printf ("%20.32s %-18.32s %10u @ %-10u (%3ld%c)\n",
64a08a9f BT	156	mpart->type,
	157	mpart->name,
	158	mpart->block_count,
	159	mpart->start_block,
fe8c2806 WD	160	bytes, c
	161	);
	162	}
	163
	164	return;
	165	}
	166
	167
	168	/*
	169	* Read Device Descriptor Block
	170	*/
	171	static int part_mac_read_ddb (block_dev_desc_t dev_desc, mac_driver_desc_t ddb_p)
	172	{
	173	if (dev_desc->block_read(dev_desc->dev, 0, 1, (ulong *)ddb_p) != 1) {
	174	printf (" Can't read Driver Desriptor Block \n");
	175	return (-1);
	176	}
	177
	178	if (ddb_p->signature != MAC_DRIVER_MAGIC) {
	179	#if 0
	180	printf ("** Bad Signature: expected 0x%04x, got 0x%04x\n",
	181	MAC_DRIVER_MAGIC, ddb_p->signature);
	182	#endif
	183	return (-1);
	184	}
	185	return (0);
	186	}
	187
	188	/*
	189	* Read Partition Descriptor Block
	190	*/
	191	static int part_mac_read_pdb (block_dev_desc_t dev_desc, int part, mac_partition_t pdb_p)
	192	{
	193	int n = 1;
	194
	195	for (;;) {
	196	/*
8bde7f77 WD	197	* We must always read the descritpor block for
	198	* partition 1 first since this is the only way to
	199	* know how many partitions we have.
fe8c2806 WD	200	*/
	201	if (dev_desc->block_read (dev_desc->dev, n, 1, (ulong *)pdb_p) != 1) {
	202	printf (" Can't read Partition Map on %d:%d \n",
	203	dev_desc->dev, n);
	204	return (-1);
	205	}
	206
	207	if (pdb_p->signature != MAC_PARTITION_MAGIC) {
	208	printf ("** Bad Signature on %d:%d: "
	209	"expected 0x%04x, got 0x%04x\n",
	210	dev_desc->dev, n, MAC_PARTITION_MAGIC, pdb_p->signature);
	211	return (-1);
	212	}
	213
	214	if (n == part)
	215	return (0);
	216
	217	if ((part < 1) \|\| (part > pdb_p->map_count)) {
	218	printf ("** Invalid partition %d:%d [%d:1...%d:%d only]\n",
	219	dev_desc->dev, part,
	220	dev_desc->dev,
	221	dev_desc->dev, pdb_p->map_count);
	222	return (-1);
	223	}
	224
	225	/* update partition count */
	226	n = part;
	227	}
	228
	229	/* NOTREACHED */
	230	}
	231
	232	int get_partition_info_mac (block_dev_desc_t dev_desc, int part, disk_partition_t info)
	233	{
64a08a9f BT	234	ALLOC_CACHE_ALIGN_BUFFER(mac_driver_desc_t, ddesc, 1);
64a08a9f BT	235	ALLOC_CACHE_ALIGN_BUFFER(mac_partition_t, mpart, 1);
fe8c2806	236
64a08a9f	237	if (part_mac_read_ddb (dev_desc, ddesc)) {
fe8c2806 WD	238	return (-1);
	239	}
	240
64a08a9f	241	info->blksz = ddesc->blk_size;
fe8c2806	242
64a08a9f	243	if (part_mac_read_pdb (dev_desc, part, mpart)) {
fe8c2806 WD	244	return (-1);
	245	}
	246
64a08a9f BT	247	info->start = mpart->start_block;
	248	info->size = mpart->block_count;
	249	memcpy (info->type, mpart->type, sizeof(info->type));
	250	memcpy (info->name, mpart->name, sizeof(info->name));
fe8c2806 WD	251
	252	return (0);
	253	}
	254
cde5c64d	255	#endif