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
38 #if (defined(CONFIG_CMD_IDE) || \
39 defined(CONFIG_CMD_SCSI) || \
40 defined(CONFIG_CMD_USB) || \
41 defined(CONFIG_MMC) || \
42 defined(CONFIG_SYSTEMACE) ) && defined(CONFIG_DOS_PARTITION)
44 /* Convert char[4] in little endian format to the host format integer
46 static inline int le32_to_int(unsigned char *le32
)
48 return ((le32
[3] << 24) +
55 static inline int is_extended(int part_type
)
57 return (part_type
== 0x5 ||
62 static void print_one_part (dos_partition_t
*p
, int ext_part_sector
, int part_num
)
64 int lba_start
= ext_part_sector
+ le32_to_int (p
->start4
);
65 int lba_size
= le32_to_int (p
->size4
);
67 printf ("%5d\t\t%10d\t%10d\t%2x%s\n",
68 part_num
, lba_start
, lba_size
, p
->sys_ind
,
69 (is_extended (p
->sys_ind
) ? " Extd" : ""));
72 static int test_block_type(unsigned char *buffer
)
74 if((buffer
[DOS_PART_MAGIC_OFFSET
+ 0] != 0x55) ||
75 (buffer
[DOS_PART_MAGIC_OFFSET
+ 1] != 0xaa) ) {
77 } /* no DOS Signature at all */
78 if(strncmp((char *)&buffer
[DOS_PBR_FSTYPE_OFFSET
],"FAT",3)==0)
79 return DOS_PBR
; /* is PBR */
80 return DOS_MBR
; /* Is MBR */
84 int test_part_dos (block_dev_desc_t
*dev_desc
)
86 unsigned char buffer
[DEFAULT_SECTOR_SIZE
];
88 if ((dev_desc
->block_read(dev_desc
->dev
, 0, 1, (ulong
*) buffer
) != 1) ||
89 (buffer
[DOS_PART_MAGIC_OFFSET
+ 0] != 0x55) ||
90 (buffer
[DOS_PART_MAGIC_OFFSET
+ 1] != 0xaa) ) {
96 /* Print a partition that is relative to its Extended partition table
98 static void print_partition_extended (block_dev_desc_t
*dev_desc
, int ext_part_sector
, int relative
,
101 unsigned char buffer
[DEFAULT_SECTOR_SIZE
];
105 if (dev_desc
->block_read(dev_desc
->dev
, ext_part_sector
, 1, (ulong
*) buffer
) != 1) {
106 printf ("** Can't read partition table on %d:%d **\n",
107 dev_desc
->dev
, ext_part_sector
);
110 i
=test_block_type(buffer
);
112 printf ("bad MBR sector signature 0x%02x%02x\n",
113 buffer
[DOS_PART_MAGIC_OFFSET
],
114 buffer
[DOS_PART_MAGIC_OFFSET
+ 1]);
118 printf (" 1\t\t 0\t%10ld\t%2x\n",
119 dev_desc
->lba
, buffer
[DOS_PBR_MEDIA_TYPE_OFFSET
]);
122 /* Print all primary/logical partitions */
123 pt
= (dos_partition_t
*) (buffer
+ DOS_PART_TBL_OFFSET
);
124 for (i
= 0; i
< 4; i
++, pt
++) {
126 * fdisk does not show the extended partitions that
130 if ((pt
->sys_ind
!= 0) &&
131 (ext_part_sector
== 0 || !is_extended (pt
->sys_ind
)) ) {
132 print_one_part (pt
, ext_part_sector
, part_num
);
135 /* Reverse engr the fdisk part# assignment rule! */
136 if ((ext_part_sector
== 0) ||
137 (pt
->sys_ind
!= 0 && !is_extended (pt
->sys_ind
)) ) {
142 /* Follows the extended partitions */
143 pt
= (dos_partition_t
*) (buffer
+ DOS_PART_TBL_OFFSET
);
144 for (i
= 0; i
< 4; i
++, pt
++) {
145 if (is_extended (pt
->sys_ind
)) {
146 int lba_start
= le32_to_int (pt
->start4
) + relative
;
148 print_partition_extended (dev_desc
, lba_start
,
149 ext_part_sector
== 0 ? lba_start
159 /* Print a partition that is relative to its Extended partition table
161 static int get_partition_info_extended (block_dev_desc_t
*dev_desc
, int ext_part_sector
,
162 int relative
, int part_num
,
163 int which_part
, disk_partition_t
*info
)
165 unsigned char buffer
[DEFAULT_SECTOR_SIZE
];
169 if (dev_desc
->block_read (dev_desc
->dev
, ext_part_sector
, 1, (ulong
*) buffer
) != 1) {
170 printf ("** Can't read partition table on %d:%d **\n",
171 dev_desc
->dev
, ext_part_sector
);
174 if (buffer
[DOS_PART_MAGIC_OFFSET
] != 0x55 ||
175 buffer
[DOS_PART_MAGIC_OFFSET
+ 1] != 0xaa) {
176 printf ("bad MBR sector signature 0x%02x%02x\n",
177 buffer
[DOS_PART_MAGIC_OFFSET
],
178 buffer
[DOS_PART_MAGIC_OFFSET
+ 1]);
182 /* Print all primary/logical partitions */
183 pt
= (dos_partition_t
*) (buffer
+ DOS_PART_TBL_OFFSET
);
184 for (i
= 0; i
< 4; i
++, pt
++) {
186 * fdisk does not show the extended partitions that
189 if ((pt
->sys_ind
!= 0) &&
190 (part_num
== which_part
) &&
191 (is_extended(pt
->sys_ind
) == 0)) {
193 info
->start
= ext_part_sector
+ le32_to_int (pt
->start4
);
194 info
->size
= le32_to_int (pt
->size4
);
195 switch(dev_desc
->if_type
) {
198 sprintf ((char *)info
->name
, "hd%c%d\n", 'a' + dev_desc
->dev
, part_num
);
201 sprintf ((char *)info
->name
, "sd%c%d\n", 'a' + dev_desc
->dev
, part_num
);
204 sprintf ((char *)info
->name
, "usbd%c%d\n", 'a' + dev_desc
->dev
, part_num
);
207 sprintf ((char *)info
->name
, "docd%c%d\n", 'a' + dev_desc
->dev
, part_num
);
210 sprintf ((char *)info
->name
, "xx%c%d\n", 'a' + dev_desc
->dev
, part_num
);
213 /* sprintf(info->type, "%d, pt->sys_ind); */
214 sprintf ((char *)info
->type
, "U-Boot");
218 /* Reverse engr the fdisk part# assignment rule! */
219 if ((ext_part_sector
== 0) ||
220 (pt
->sys_ind
!= 0 && !is_extended (pt
->sys_ind
)) ) {
225 /* Follows the extended partitions */
226 pt
= (dos_partition_t
*) (buffer
+ DOS_PART_TBL_OFFSET
);
227 for (i
= 0; i
< 4; i
++, pt
++) {
228 if (is_extended (pt
->sys_ind
)) {
229 int lba_start
= le32_to_int (pt
->start4
) + relative
;
231 return get_partition_info_extended (dev_desc
, lba_start
,
232 ext_part_sector
== 0 ? lba_start
: relative
,
233 part_num
, which_part
, info
);
239 void print_part_dos (block_dev_desc_t
*dev_desc
)
241 printf ("Partition Start Sector Num Sectors Type\n");
242 print_partition_extended (dev_desc
, 0, 0, 1);
245 int get_partition_info_dos (block_dev_desc_t
*dev_desc
, int part
, disk_partition_t
* info
)
247 return get_partition_info_extended (dev_desc
, 0, 0, 1, part
, info
);