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
256
257
258
259
260
261
262
|
/*
* (C) Copyright 2001
* Raymond Lo, lo@routefree.com
* 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_dos.h"
#if defined(CONFIG_CMD_IDE) || \
defined(CONFIG_CMD_MG_DISK) || \
defined(CONFIG_CMD_SATA) || \
defined(CONFIG_CMD_SCSI) || \
defined(CONFIG_CMD_USB) || \
defined(CONFIG_MMC) || \
defined(CONFIG_SYSTEMACE)
/* Convert char[4] in little endian format to the host format integer
*/
static inline int le32_to_int(unsigned char *le32)
{
return ((le32[3] << 24) +
(le32[2] << 16) +
(le32[1] << 8) +
le32[0]
);
}
static inline int is_extended(int part_type)
{
return (part_type == 0x5 ||
part_type == 0xf ||
part_type == 0x85);
}
static void print_one_part (dos_partition_t *p, int ext_part_sector, int part_num)
{
int lba_start = ext_part_sector + le32_to_int (p->start4);
int lba_size = le32_to_int (p->size4);
printf ("%5d\t\t%10d\t%10d\t%2x%s\n",
part_num, lba_start, lba_size, p->sys_ind,
(is_extended (p->sys_ind) ? " Extd" : ""));
}
static int test_block_type(unsigned char *buffer)
{
if((buffer[DOS_PART_MAGIC_OFFSET + 0] != 0x55) ||
(buffer[DOS_PART_MAGIC_OFFSET + 1] != 0xaa) ) {
return (-1);
} /* no DOS Signature at all */
if (strncmp((char *)&buffer[DOS_PBR_FSTYPE_OFFSET],"FAT",3)==0 ||
strncmp((char *)&buffer[DOS_PBR32_FSTYPE_OFFSET],"FAT32",5)==0) {
return DOS_PBR; /* is PBR */
}
return DOS_MBR; /* Is MBR */
}
int test_part_dos (block_dev_desc_t *dev_desc)
{
ALLOC_CACHE_ALIGN_BUFFER(unsigned char, buffer, dev_desc->blksz);
if ((dev_desc->block_read(dev_desc->dev, 0, 1, (ulong *) buffer) != 1) ||
(buffer[DOS_PART_MAGIC_OFFSET + 0] != 0x55) ||
(buffer[DOS_PART_MAGIC_OFFSET + 1] != 0xaa) ) {
return (-1);
}
return (0);
}
/* Print a partition that is relative to its Extended partition table
*/
static void print_partition_extended (block_dev_desc_t *dev_desc, int ext_part_sector, int relative,
int part_num)
{
ALLOC_CACHE_ALIGN_BUFFER(unsigned char, buffer, dev_desc->blksz);
dos_partition_t *pt;
int i;
if (dev_desc->block_read(dev_desc->dev, ext_part_sector, 1, (ulong *) buffer) != 1) {
printf ("** Can't read partition table on %d:%d **\n",
dev_desc->dev, ext_part_sector);
return;
}
i=test_block_type(buffer);
if(i==-1) {
printf ("bad MBR sector signature 0x%02x%02x\n",
buffer[DOS_PART_MAGIC_OFFSET],
buffer[DOS_PART_MAGIC_OFFSET + 1]);
return;
}
if(i==DOS_PBR) {
printf (" 1\t\t 0\t%10ld\t%2x\n",
dev_desc->lba, buffer[DOS_PBR_MEDIA_TYPE_OFFSET]);
return;
}
/* Print all primary/logical partitions */
pt = (dos_partition_t *) (buffer + DOS_PART_TBL_OFFSET);
for (i = 0; i < 4; i++, pt++) {
/*
* fdisk does not show the extended partitions that
* are not in the MBR
*/
if ((pt->sys_ind != 0) &&
(ext_part_sector == 0 || !is_extended (pt->sys_ind)) ) {
print_one_part (pt, ext_part_sector, part_num);
}
/* Reverse engr the fdisk part# assignment rule! */
if ((ext_part_sector == 0) ||
(pt->sys_ind != 0 && !is_extended (pt->sys_ind)) ) {
part_num++;
}
}
/* Follows the extended partitions */
pt = (dos_partition_t *) (buffer + DOS_PART_TBL_OFFSET);
for (i = 0; i < 4; i++, pt++) {
if (is_extended (pt->sys_ind)) {
int lba_start = le32_to_int (pt->start4) + relative;
print_partition_extended (dev_desc, lba_start,
ext_part_sector == 0 ? lba_start
: relative,
part_num);
}
}
return;
}
/* Print a partition that is relative to its Extended partition table
*/
static int get_partition_info_extended (block_dev_desc_t *dev_desc, int ext_part_sector,
int relative, int part_num,
int which_part, disk_partition_t *info)
{
ALLOC_CACHE_ALIGN_BUFFER(unsigned char, buffer, dev_desc->blksz);
dos_partition_t *pt;
int i;
if (dev_desc->block_read (dev_desc->dev, ext_part_sector, 1, (ulong *) buffer) != 1) {
printf ("** Can't read partition table on %d:%d **\n",
dev_desc->dev, ext_part_sector);
return -1;
}
if (buffer[DOS_PART_MAGIC_OFFSET] != 0x55 ||
buffer[DOS_PART_MAGIC_OFFSET + 1] != 0xaa) {
printf ("bad MBR sector signature 0x%02x%02x\n",
buffer[DOS_PART_MAGIC_OFFSET],
buffer[DOS_PART_MAGIC_OFFSET + 1]);
return -1;
}
/* Print all primary/logical partitions */
pt = (dos_partition_t *) (buffer + DOS_PART_TBL_OFFSET);
for (i = 0; i < 4; i++, pt++) {
/*
* fdisk does not show the extended partitions that
* are not in the MBR
*/
if (((pt->boot_ind & ~0x80) == 0) &&
(pt->sys_ind != 0) &&
(part_num == which_part) &&
(is_extended(pt->sys_ind) == 0)) {
info->blksz = 512;
info->start = ext_part_sector + le32_to_int (pt->start4);
info->size = le32_to_int (pt->size4);
switch(dev_desc->if_type) {
case IF_TYPE_IDE:
case IF_TYPE_SATA:
case IF_TYPE_ATAPI:
sprintf ((char *)info->name, "hd%c%d",
'a' + dev_desc->dev, part_num);
break;
case IF_TYPE_SCSI:
sprintf ((char *)info->name, "sd%c%d",
'a' + dev_desc->dev, part_num);
break;
case IF_TYPE_USB:
sprintf ((char *)info->name, "usbd%c%d",
'a' + dev_desc->dev, part_num);
break;
case IF_TYPE_DOC:
sprintf ((char *)info->name, "docd%c%d",
'a' + dev_desc->dev, part_num);
break;
default:
sprintf ((char *)info->name, "xx%c%d",
'a' + dev_desc->dev, part_num);
break;
}
/* sprintf(info->type, "%d, pt->sys_ind); */
sprintf ((char *)info->type, "U-Boot");
return 0;
}
/* Reverse engr the fdisk part# assignment rule! */
if ((ext_part_sector == 0) ||
(pt->sys_ind != 0 && !is_extended (pt->sys_ind)) ) {
part_num++;
}
}
/* Follows the extended partitions */
pt = (dos_partition_t *) (buffer + DOS_PART_TBL_OFFSET);
for (i = 0; i < 4; i++, pt++) {
if (is_extended (pt->sys_ind)) {
int lba_start = le32_to_int (pt->start4) + relative;
return get_partition_info_extended (dev_desc, lba_start,
ext_part_sector == 0 ? lba_start : relative,
part_num, which_part, info);
}
}
return -1;
}
void print_part_dos (block_dev_desc_t *dev_desc)
{
printf ("Partition Start Sector Num Sectors Type\n");
print_partition_extended (dev_desc, 0, 0, 1);
}
int get_partition_info_dos (block_dev_desc_t *dev_desc, int part, disk_partition_t * info)
{
return get_partition_info_extended (dev_desc, 0, 0, 1, part, info);
}
#endif
|
