1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
|
/*
* (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_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
|
