[people/ms/u-boot.git] / disk / part_mac.c

/*
 * (C) Copyright 2000
 * 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 "part_mac.h"

#if defined(CONFIG_CMD_IDE) || \
    defined(CONFIG_CMD_MG_DISK) || \
    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)
{
	mac_driver_desc_t	ddesc;
	mac_partition_t		mpart;
	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;
	mac_driver_desc_t	ddesc;
	mac_partition_t		mpart;
	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)
{
	mac_driver_desc_t	ddesc;
	mac_partition_t		mpart;

	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, wd@denx.de.
	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	37	#if defined(CONFIG_CMD_IDE) \|\| \
75eb82ec	38	defined(CONFIG_CMD_MG_DISK) \|\| \
7bd2722e MF	39	defined(CONFIG_CMD_SCSI) \|\| \
	40	defined(CONFIG_CMD_SATA) \|\| \
	41	defined(CONFIG_CMD_USB) \|\| \
	42	defined(CONFIG_MMC) \|\| \
	43	defined(CONFIG_SYSTEMACE)
fe8c2806 WD	44
	45	/* stdlib.h causes some compatibility problems; should fixe these! -- wd */
	46	#ifndef __ldiv_t_defined
	47	typedef struct {
	48	long int quot; /* Quotient */
	49	long int rem; /* Remainder */
	50	} ldiv_t;
	51	extern ldiv_t ldiv (long int __numer, long int __denom);
	52	# define __ldiv_t_defined 1
	53	#endif
	54
	55
	56	static int part_mac_read_ddb (block_dev_desc_t dev_desc, mac_driver_desc_t ddb_p);
	57	static int part_mac_read_pdb (block_dev_desc_t dev_desc, int part, mac_partition_t pdb_p);
	58
	59	/*
	60	* Test for a valid MAC partition
	61	*/
	62	int test_part_mac (block_dev_desc_t *dev_desc)
	63	{
	64	mac_driver_desc_t ddesc;
	65	mac_partition_t mpart;
	66	ulong i, n;
	67
	68	if (part_mac_read_ddb (dev_desc, &ddesc)) {
	69	/* error reading Driver Desriptor Block, or no valid Signature */
	70	return (-1);
	71	}
	72
	73	n = 1; /* assuming at least one partition */
	74	for (i=1; i<=n; ++i) {
	75	if ((dev_desc->block_read(dev_desc->dev, i, 1, (ulong *)&mpart) != 1) \|\|
	76	(mpart.signature != MAC_PARTITION_MAGIC) ) {
	77	return (-1);
	78	}
	79	/* update partition count */
	80	n = mpart.map_count;
	81	}
	82	return (0);
	83	}
	84
	85
	86	void print_part_mac (block_dev_desc_t *dev_desc)
	87	{
	88	ulong i, n;
	89	mac_driver_desc_t ddesc;
	90	mac_partition_t mpart;
	91	ldiv_t mb, gb;
	92
	93	if (part_mac_read_ddb (dev_desc, &ddesc)) {
	94	/* error reading Driver Desriptor Block, or no valid Signature */
	95	return;
	96	}
	97
	98	n = ddesc.blk_count;
	99
	100	mb = ldiv(n, ((1024 * 1024) / ddesc.blk_size)); /* MB */
	101	/* round to 1 digit */
	102	mb.rem = 10 ddesc.blk_size;
	103	mb.rem += 512 * 1024;
	104	mb.rem /= 1024 * 1024;
	105
	106	gb = ldiv(10 * mb.quot + mb.rem, 10240);
	107	gb.rem += 512;
108	gb.rem /= 1024;
109
110
111	printf ("Block Size=%d, Number of Blocks=%d, "
112	"Total Capacity: %ld.%ld MB = %ld.%ld GB\n"
113	"DeviceType=0x%x, DeviceId=0x%x\n\n"
114	" #: type name"
115	" length base (size)\n",
116	ddesc.blk_size,
117	ddesc.blk_count,
118	mb.quot, mb.rem, gb.quot, gb.rem,
119	ddesc.dev_type, ddesc.dev_id
120	);
121
122	n = 1; /* assuming at least one partition */
123	for (i=1; i<=n; ++i) {
124	ulong bytes;
125	char c;
126
127	printf ("%4ld: ", i);
128	if (dev_desc->block_read (dev_desc->dev, i, 1, (ulong *)&mpart) != 1) {
129	printf (" Can't read Partition Map on %d:%ld \n",
130	dev_desc->dev, i);
131	return;
132	}
133
134	if (mpart.signature != MAC_PARTITION_MAGIC) {
135	printf ("** Bad Signature on %d:%ld - "
136	"expected 0x%04x, got 0x%04x\n",
137	dev_desc->dev, i, MAC_PARTITION_MAGIC, mpart.signature);
138	return;
139	}
140
141	/* update partition count */
142	n = mpart.map_count;
143
144	c = 'k';
145	bytes = mpart.block_count;
146	bytes /= (1024 / ddesc.blk_size); /* kB; assumes blk_size == 512 */
147	if (bytes >= 1024) {
148	bytes >>= 10;
149	c = 'M';
150	}
151	if (bytes >= 1024) {
152	bytes >>= 10;
153	c = 'G';
154	}
155
156	printf ("%20.32s %-18.32s %10u @ %-10u (%3ld%c)\n",
157	mpart.type,
158	mpart.name,
159	mpart.block_count,
160	mpart.start_block,
161	bytes, c
162	);
163	}
164
165	return;
166	}
167
168
169	/*
170	* Read Device Descriptor Block
171	*/
172	static int part_mac_read_ddb (block_dev_desc_t dev_desc, mac_driver_desc_t ddb_p)
173	{
174	if (dev_desc->block_read(dev_desc->dev, 0, 1, (ulong *)ddb_p) != 1) {
175	printf (" Can't read Driver Desriptor Block \n");
176	return (-1);
177	}
178
179	if (ddb_p->signature != MAC_DRIVER_MAGIC) {
180	#if 0
181	printf ("** Bad Signature: expected 0x%04x, got 0x%04x\n",
182	MAC_DRIVER_MAGIC, ddb_p->signature);
183	#endif
184	return (-1);
185	}
186	return (0);
187	}
188
189	/*
190	* Read Partition Descriptor Block
191	*/
192	static int part_mac_read_pdb (block_dev_desc_t dev_desc, int part, mac_partition_t pdb_p)
193	{
194	int n = 1;
195
196	for (;;) {
197	/*
8bde7f77 WD	198	* We must always read the descritpor block for
	199	* partition 1 first since this is the only way to
	200	* know how many partitions we have.
fe8c2806 WD	201	*/
	202	if (dev_desc->block_read (dev_desc->dev, n, 1, (ulong *)pdb_p) != 1) {
	203	printf (" Can't read Partition Map on %d:%d \n",
	204	dev_desc->dev, n);
	205	return (-1);
	206	}
	207
	208	if (pdb_p->signature != MAC_PARTITION_MAGIC) {
	209	printf ("** Bad Signature on %d:%d: "
	210	"expected 0x%04x, got 0x%04x\n",
	211	dev_desc->dev, n, MAC_PARTITION_MAGIC, pdb_p->signature);
	212	return (-1);
	213	}
	214
	215	if (n == part)
	216	return (0);
	217
	218	if ((part < 1) \|\| (part > pdb_p->map_count)) {
	219	printf ("** Invalid partition %d:%d [%d:1...%d:%d only]\n",
	220	dev_desc->dev, part,
	221	dev_desc->dev,
	222	dev_desc->dev, pdb_p->map_count);
	223	return (-1);
	224	}
	225
	226	/* update partition count */
	227	n = part;
	228	}
	229
	230	/* NOTREACHED */
	231	}
	232
	233	int get_partition_info_mac (block_dev_desc_t dev_desc, int part, disk_partition_t info)
	234	{
	235	mac_driver_desc_t ddesc;
	236	mac_partition_t mpart;
	237
	238	if (part_mac_read_ddb (dev_desc, &ddesc)) {
	239	return (-1);
	240	}
	241
	242	info->blksz = ddesc.blk_size;
	243
	244	if (part_mac_read_pdb (dev_desc, part, &mpart)) {
	245	return (-1);
	246	}
	247
	248	info->start = mpart.start_block;
	249	info->size = mpart.block_count;
	250	memcpy (info->type, mpart.type, sizeof(info->type));
	251	memcpy (info->name, mpart.name, sizeof(info->name));
	252
	253	return (0);
	254	}
	255
cde5c64d	256	#endif