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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
wdenk1968e612005-02-24 23:23:29 +000037#if ((CONFIG_COMMANDS & CFG_CMD_IDE) || \
38 (CONFIG_COMMANDS & CFG_CMD_SCSI) || \
39 (CONFIG_COMMANDS & CFG_CMD_USB) || \
40 defined(CONFIG_MMC) || \
41 defined(CONFIG_SYSTEMACE) ) && defined(CONFIG_MAC_PARTITION)
wdenkfe8c2802002-11-03 00:38:21 +000042
43/* stdlib.h causes some compatibility problems; should fixe these! -- wd */
44#ifndef __ldiv_t_defined
45typedef struct {
46 long int quot; /* Quotient */
47 long int rem; /* Remainder */
48} ldiv_t;
49extern ldiv_t ldiv (long int __numer, long int __denom);
50# define __ldiv_t_defined 1
51#endif
52
53
54static int part_mac_read_ddb (block_dev_desc_t *dev_desc, mac_driver_desc_t *ddb_p);
55static int part_mac_read_pdb (block_dev_desc_t *dev_desc, int part, mac_partition_t *pdb_p);
56
57/*
58 * Test for a valid MAC partition
59 */
60int test_part_mac (block_dev_desc_t *dev_desc)
61{
62 mac_driver_desc_t ddesc;
63 mac_partition_t mpart;
64 ulong i, n;
65
66 if (part_mac_read_ddb (dev_desc, &ddesc)) {
67 /* error reading Driver Desriptor Block, or no valid Signature */
68 return (-1);
69 }
70
71 n = 1; /* assuming at least one partition */
72 for (i=1; i<=n; ++i) {
73 if ((dev_desc->block_read(dev_desc->dev, i, 1, (ulong *)&mpart) != 1) ||
74 (mpart.signature != MAC_PARTITION_MAGIC) ) {
75 return (-1);
76 }
77 /* update partition count */
78 n = mpart.map_count;
79 }
80 return (0);
81}
82
83
84void print_part_mac (block_dev_desc_t *dev_desc)
85{
86 ulong i, n;
87 mac_driver_desc_t ddesc;
88 mac_partition_t mpart;
89 ldiv_t mb, gb;
90
91 if (part_mac_read_ddb (dev_desc, &ddesc)) {
92 /* error reading Driver Desriptor Block, or no valid Signature */
93 return;
94 }
95
96 n = ddesc.blk_count;
97
98 mb = ldiv(n, ((1024 * 1024) / ddesc.blk_size)); /* MB */
99 /* round to 1 digit */
100 mb.rem *= 10 * ddesc.blk_size;
101 mb.rem += 512 * 1024;
102 mb.rem /= 1024 * 1024;
103
104 gb = ldiv(10 * mb.quot + mb.rem, 10240);
105 gb.rem += 512;
106 gb.rem /= 1024;
107
108
109 printf ("Block Size=%d, Number of Blocks=%d, "
110 "Total Capacity: %ld.%ld MB = %ld.%ld GB\n"
111 "DeviceType=0x%x, DeviceId=0x%x\n\n"
112 " #: type name"
113 " length base (size)\n",
114 ddesc.blk_size,
115 ddesc.blk_count,
116 mb.quot, mb.rem, gb.quot, gb.rem,
117 ddesc.dev_type, ddesc.dev_id
118 );
119
120 n = 1; /* assuming at least one partition */
121 for (i=1; i<=n; ++i) {
122 ulong bytes;
123 char c;
124
125 printf ("%4ld: ", i);
126 if (dev_desc->block_read (dev_desc->dev, i, 1, (ulong *)&mpart) != 1) {
127 printf ("** Can't read Partition Map on %d:%ld **\n",
128 dev_desc->dev, i);
129 return;
130 }
131
132 if (mpart.signature != MAC_PARTITION_MAGIC) {
133 printf ("** Bad Signature on %d:%ld - "
134 "expected 0x%04x, got 0x%04x\n",
135 dev_desc->dev, i, MAC_PARTITION_MAGIC, mpart.signature);
136 return;
137 }
138
139 /* update partition count */
140 n = mpart.map_count;
141
142 c = 'k';
143 bytes = mpart.block_count;
144 bytes /= (1024 / ddesc.blk_size); /* kB; assumes blk_size == 512 */
145 if (bytes >= 1024) {
146 bytes >>= 10;
147 c = 'M';
148 }
149 if (bytes >= 1024) {
150 bytes >>= 10;
151 c = 'G';
152 }
153
154 printf ("%20.32s %-18.32s %10u @ %-10u (%3ld%c)\n",
155 mpart.type,
156 mpart.name,
157 mpart.block_count,
158 mpart.start_block,
159 bytes, c
160 );
161 }
162
163 return;
164}
165
166
167/*
168 * Read Device Descriptor Block
169 */
170static int part_mac_read_ddb (block_dev_desc_t *dev_desc, mac_driver_desc_t *ddb_p)
171{
172 if (dev_desc->block_read(dev_desc->dev, 0, 1, (ulong *)ddb_p) != 1) {
173 printf ("** Can't read Driver Desriptor Block **\n");
174 return (-1);
175 }
176
177 if (ddb_p->signature != MAC_DRIVER_MAGIC) {
178#if 0
179 printf ("** Bad Signature: expected 0x%04x, got 0x%04x\n",
180 MAC_DRIVER_MAGIC, ddb_p->signature);
181#endif
182 return (-1);
183 }
184 return (0);
185}
186
187/*
188 * Read Partition Descriptor Block
189 */
190static int part_mac_read_pdb (block_dev_desc_t *dev_desc, int part, mac_partition_t *pdb_p)
191{
192 int n = 1;
193
194 for (;;) {
195 /*
wdenk8bde7f72003-06-27 21:31:46 +0000196 * We must always read the descritpor block for
197 * partition 1 first since this is the only way to
198 * know how many partitions we have.
wdenkfe8c2802002-11-03 00:38:21 +0000199 */
200 if (dev_desc->block_read (dev_desc->dev, n, 1, (ulong *)pdb_p) != 1) {
201 printf ("** Can't read Partition Map on %d:%d **\n",
202 dev_desc->dev, n);
203 return (-1);
204 }
205
206 if (pdb_p->signature != MAC_PARTITION_MAGIC) {
207 printf ("** Bad Signature on %d:%d: "
208 "expected 0x%04x, got 0x%04x\n",
209 dev_desc->dev, n, MAC_PARTITION_MAGIC, pdb_p->signature);
210 return (-1);
211 }
212
213 if (n == part)
214 return (0);
215
216 if ((part < 1) || (part > pdb_p->map_count)) {
217 printf ("** Invalid partition %d:%d [%d:1...%d:%d only]\n",
218 dev_desc->dev, part,
219 dev_desc->dev,
220 dev_desc->dev, pdb_p->map_count);
221 return (-1);
222 }
223
224 /* update partition count */
225 n = part;
226 }
227
228 /* NOTREACHED */
229}
230
231int get_partition_info_mac (block_dev_desc_t *dev_desc, int part, disk_partition_t *info)
232{
233 mac_driver_desc_t ddesc;
234 mac_partition_t mpart;
235
236 if (part_mac_read_ddb (dev_desc, &ddesc)) {
237 return (-1);
238 }
239
240 info->blksz = ddesc.blk_size;
241
242 if (part_mac_read_pdb (dev_desc, part, &mpart)) {
243 return (-1);
244 }
245
246 info->start = mpart.start_block;
247 info->size = mpart.block_count;
248 memcpy (info->type, mpart.type, sizeof(info->type));
249 memcpy (info->name, mpart.name, sizeof(info->name));
250
251 return (0);
252}
253
254#endif /* (CONFIG_COMMANDS & CFG_CMD_IDE) && CONFIG_MAC_PARTITION */