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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
Mike Frysinger7bd27222009-01-29 20:02:07 -050037#if defined(CONFIG_CMD_IDE) || \
unsik Kim75eb82e2009-02-25 11:31:24 +090038 defined(CONFIG_CMD_MG_DISK) || \
Mike Frysinger7bd27222009-01-29 20:02:07 -050039 defined(CONFIG_CMD_SCSI) || \
40 defined(CONFIG_CMD_SATA) || \
41 defined(CONFIG_CMD_USB) || \
42 defined(CONFIG_MMC) || \
43 defined(CONFIG_SYSTEMACE)
wdenkfe8c2802002-11-03 00:38:21 +000044
45/* stdlib.h causes some compatibility problems; should fixe these! -- wd */
46#ifndef __ldiv_t_defined
47typedef struct {
48 long int quot; /* Quotient */
49 long int rem; /* Remainder */
50} ldiv_t;
51extern ldiv_t ldiv (long int __numer, long int __denom);
52# define __ldiv_t_defined 1
53#endif
54
55
56static int part_mac_read_ddb (block_dev_desc_t *dev_desc, mac_driver_desc_t *ddb_p);
57static 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 */
62int 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
86void 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 */
172static 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 */
192static 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 /*
wdenk8bde7f72003-06-27 21:31:46 +0000198 * 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.
wdenkfe8c2802002-11-03 00:38:21 +0000201 */
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
233int 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
Jon Loeligercde5c642007-07-09 17:22:37 -0500256#endif