]>
git.ipfire.org Git - people/ms/u-boot.git/blob - disk/part_dos.c
3 * Raymond Lo, lo@routefree.com
4 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
6 * See file CREDITS for list of people who contributed to this
9 * This program is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU General Public License as
11 * published by the Free Software Foundation; either version 2 of
12 * the License, or (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
26 * Support for harddisk partitions.
28 * To be compatible with LinuxPPC and Apple we use the standard Apple
29 * SCSI disk partitioning scheme. For more information see:
30 * http://developer.apple.com/techpubs/mac/Devices/Devices-126.html#MARKER-14-92
39 #if ((CONFIG_COMMANDS & CFG_CMD_IDE) || (CONFIG_COMMANDS & CFG_CMD_SCSI)) && defined(CONFIG_DOS_PARTITION)
41 /* Convert char[4] in little endian format to the host format integer
43 static inline int le32_to_int(unsigned char *le32
)
45 return ((le32
[3] << 24) +
52 static inline int is_extended(int part_type
)
54 return (part_type
== 0x5 ||
59 static void print_one_part (dos_partition_t
*p
, int ext_part_sector
, int part_num
)
61 int lba_start
= ext_part_sector
+ le32_to_int (p
->start4
);
62 int lba_size
= le32_to_int (p
->size4
);
64 printf ("%5d\t\t%10d\t%10d\t%2x%s\n",
65 part_num
, lba_start
, lba_size
, p
->sys_ind
,
66 (is_extended (p
->sys_ind
) ? " Extd" : ""));
71 int test_part_dos (block_dev_desc_t
*dev_desc
)
73 unsigned char buffer
[DEFAULT_SECTOR_SIZE
];
75 if ((dev_desc
->block_read(dev_desc
->dev
, 0, 1, (ulong
*) buffer
) != 1) ||
76 (buffer
[DOS_PART_MAGIC_OFFSET
+ 0] != 0x55) ||
77 (buffer
[DOS_PART_MAGIC_OFFSET
+ 1] != 0xaa) ) {
83 /* Print a partition that is relative to its Extended partition table
85 static void print_partition_extended (block_dev_desc_t
*dev_desc
, int ext_part_sector
, int relative
,
88 unsigned char buffer
[DEFAULT_SECTOR_SIZE
];
92 if (dev_desc
->block_read(dev_desc
->dev
, ext_part_sector
, 1, (ulong
*) buffer
) != 1) {
93 printf ("** Can't read partition table on %d:%d **\n",
94 dev_desc
->dev
, ext_part_sector
);
97 if (buffer
[DOS_PART_MAGIC_OFFSET
] != 0x55 ||
98 buffer
[DOS_PART_MAGIC_OFFSET
+ 1] != 0xaa) {
99 printf ("bad MBR sector signature 0x%02x%02x\n",
100 buffer
[DOS_PART_MAGIC_OFFSET
],
101 buffer
[DOS_PART_MAGIC_OFFSET
+ 1]);
105 /* Print all primary/logical partitions */
106 pt
= (dos_partition_t
*) (buffer
+ DOS_PART_TBL_OFFSET
);
107 for (i
= 0; i
< 4; i
++, pt
++) {
109 * fdisk does not show the extended partitions that
113 if ((pt
->sys_ind
!= 0) &&
114 (ext_part_sector
== 0 || !is_extended (pt
->sys_ind
)) ) {
115 print_one_part (pt
, ext_part_sector
, part_num
);
118 /* Reverse engr the fdisk part# assignment rule! */
119 if ((ext_part_sector
== 0) ||
120 (pt
->sys_ind
!= 0 && !is_extended (pt
->sys_ind
)) ) {
125 /* Follows the extended partitions */
126 pt
= (dos_partition_t
*) (buffer
+ DOS_PART_TBL_OFFSET
);
127 for (i
= 0; i
< 4; i
++, pt
++) {
128 if (is_extended (pt
->sys_ind
)) {
129 int lba_start
= le32_to_int (pt
->start4
) + relative
;
131 print_partition_extended (dev_desc
, lba_start
,
132 ext_part_sector
== 0 ? lba_start
142 /* Print a partition that is relative to its Extended partition table
144 static int get_partition_info_extended (block_dev_desc_t
*dev_desc
, int ext_part_sector
,
145 int relative
, int part_num
,
146 int which_part
, disk_partition_t
*info
)
148 unsigned char buffer
[DEFAULT_SECTOR_SIZE
];
152 if (dev_desc
->block_read (dev_desc
->dev
, ext_part_sector
, 1, (ulong
*) buffer
) != 1) {
153 printf ("** Can't read partition table on %d:%d **\n",
154 dev_desc
->dev
, ext_part_sector
);
157 if (buffer
[DOS_PART_MAGIC_OFFSET
] != 0x55 ||
158 buffer
[DOS_PART_MAGIC_OFFSET
+ 1] != 0xaa) {
159 printf ("bad MBR sector signature 0x%02x%02x\n",
160 buffer
[DOS_PART_MAGIC_OFFSET
],
161 buffer
[DOS_PART_MAGIC_OFFSET
+ 1]);
165 /* Print all primary/logical partitions */
166 pt
= (dos_partition_t
*) (buffer
+ DOS_PART_TBL_OFFSET
);
167 for (i
= 0; i
< 4; i
++, pt
++) {
169 * fdisk does not show the extended partitions that
172 if ((pt
->sys_ind
!= 0) &&
173 (part_num
== which_part
) &&
174 (is_extended(pt
->sys_ind
) == 0)) {
176 info
->start
= ext_part_sector
+ le32_to_int (pt
->start4
);
177 info
->size
= le32_to_int (pt
->size4
);
178 switch(dev_desc
->if_type
) {
181 sprintf (info
->name
, "hd%c%d\n", 'a' + dev_desc
->dev
, part_num
);
184 sprintf (info
->name
, "sd%c%d\n", 'a' + dev_desc
->dev
, part_num
);
187 sprintf (info
->name
, "usbd%c%d\n", 'a' + dev_desc
->dev
, part_num
);
190 sprintf (info
->name
, "docd%c%d\n", 'a' + dev_desc
->dev
, part_num
);
193 sprintf (info
->name
, "xx%c%d\n", 'a' + dev_desc
->dev
, part_num
);
196 /* sprintf(info->type, "%d, pt->sys_ind); */
197 sprintf (info
->type
, "U-Boot");
201 /* Reverse engr the fdisk part# assignment rule! */
202 if ((ext_part_sector
== 0) ||
203 (pt
->sys_ind
!= 0 && !is_extended (pt
->sys_ind
)) ) {
208 /* Follows the extended partitions */
209 pt
= (dos_partition_t
*) (buffer
+ DOS_PART_TBL_OFFSET
);
210 for (i
= 0; i
< 4; i
++, pt
++) {
211 if (is_extended (pt
->sys_ind
)) {
212 int lba_start
= le32_to_int (pt
->start4
) + relative
;
214 return get_partition_info_extended (dev_desc
, lba_start
,
215 ext_part_sector
== 0 ? lba_start
: relative
,
216 part_num
, which_part
, info
);
222 void print_part_dos (block_dev_desc_t
*dev_desc
)
224 printf ("Partition Start Sector Num Sectors Type\n");
225 print_partition_extended (dev_desc
, 0, 0, 1);
228 int get_partition_info_dos (block_dev_desc_t
*dev_desc
, int part
, disk_partition_t
* info
)
230 return get_partition_info_extended (dev_desc
, 0, 0, 1, part
, info
);
235 #endif /* (CONFIG_COMMANDS & CFG_CMD_IDE) && CONFIG_DOS_PARTITION */