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wdenkfe8c2802002-11-03 00:38:21 +00001/*
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>
wdenkfe8c2802002-11-03 00:38:21 +000035#include "part_mac.h"
36
Jon Loeligercde5c642007-07-09 17:22:37 -050037#if (defined(CONFIG_CMD_IDE) || \
38 defined(CONFIG_CMD_SCSI) || \
Dave Liuc7057b52008-03-26 22:49:44 +080039 defined(CONFIG_CMD_SATA) || \
Jon Loeligercde5c642007-07-09 17:22:37 -050040 defined(CONFIG_CMD_USB) || \
wdenk1968e612005-02-24 23:23:29 +000041 defined(CONFIG_MMC) || \
42 defined(CONFIG_SYSTEMACE) ) && defined(CONFIG_MAC_PARTITION)
wdenkfe8c2802002-11-03 00:38:21 +000043
44/* stdlib.h causes some compatibility problems; should fixe these! -- wd */
45#ifndef __ldiv_t_defined
46typedef struct {
47 long int quot; /* Quotient */
48 long int rem; /* Remainder */
49} ldiv_t;
50extern ldiv_t ldiv (long int __numer, long int __denom);
51# define __ldiv_t_defined 1
52#endif
53
54
55static int part_mac_read_ddb (block_dev_desc_t *dev_desc, mac_driver_desc_t *ddb_p);
56static 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 */
61int test_part_mac (block_dev_desc_t *dev_desc)
62{
63 mac_driver_desc_t ddesc;
64 mac_partition_t mpart;
65 ulong i, n;
66
67 if (part_mac_read_ddb (dev_desc, &ddesc)) {
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) {
74 if ((dev_desc->block_read(dev_desc->dev, i, 1, (ulong *)&mpart) != 1) ||
75 (mpart.signature != MAC_PARTITION_MAGIC) ) {
76 return (-1);
77 }
78 /* update partition count */
79 n = mpart.map_count;
80 }
81 return (0);
82}
83
84
85void print_part_mac (block_dev_desc_t *dev_desc)
86{
87 ulong i, n;
88 mac_driver_desc_t ddesc;
89 mac_partition_t mpart;
90 ldiv_t mb, gb;
91
92 if (part_mac_read_ddb (dev_desc, &ddesc)) {
93 /* error reading Driver Desriptor Block, or no valid Signature */
94 return;
95 }
96
97 n = ddesc.blk_count;
98
99 mb = ldiv(n, ((1024 * 1024) / ddesc.blk_size)); /* MB */
100 /* round to 1 digit */
101 mb.rem *= 10 * ddesc.blk_size;
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",
115 ddesc.blk_size,
116 ddesc.blk_count,
117 mb.quot, mb.rem, gb.quot, gb.rem,
118 ddesc.dev_type, ddesc.dev_id
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);
127 if (dev_desc->block_read (dev_desc->dev, i, 1, (ulong *)&mpart) != 1) {
128 printf ("** Can't read Partition Map on %d:%ld **\n",
129 dev_desc->dev, i);
130 return;
131 }
132
133 if (mpart.signature != MAC_PARTITION_MAGIC) {
134 printf ("** Bad Signature on %d:%ld - "
135 "expected 0x%04x, got 0x%04x\n",
136 dev_desc->dev, i, MAC_PARTITION_MAGIC, mpart.signature);
137 return;
138 }
139
140 /* update partition count */
141 n = mpart.map_count;
142
143 c = 'k';
144 bytes = mpart.block_count;
145 bytes /= (1024 / ddesc.blk_size); /* kB; assumes blk_size == 512 */
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",
156 mpart.type,
157 mpart.name,
158 mpart.block_count,
159 mpart.start_block,
160 bytes, c
161 );
162 }
163
164 return;
165}
166
167
168/*
169 * Read Device Descriptor Block
170 */
171static 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 */
191static 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 /*
wdenk8bde7f72003-06-27 21:31:46 +0000197 * 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.
wdenkfe8c2802002-11-03 00:38:21 +0000200 */
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
232int get_partition_info_mac (block_dev_desc_t *dev_desc, int part, disk_partition_t *info)
233{
234 mac_driver_desc_t ddesc;
235 mac_partition_t mpart;
236
237 if (part_mac_read_ddb (dev_desc, &ddesc)) {
238 return (-1);
239 }
240
241 info->blksz = ddesc.blk_size;
242
243 if (part_mac_read_pdb (dev_desc, part, &mpart)) {
244 return (-1);
245 }
246
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));
251
252 return (0);
253}
254
Jon Loeligercde5c642007-07-09 17:22:37 -0500255#endif