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_SATA) || \
40 defined(CONFIG_CMD_SCSI) || \
41 defined(CONFIG_CMD_USB) || \
42 defined(CONFIG_MMC) || \
43 defined(CONFIG_SYSTEMACE)
45 /* Convert char[4] in little endian format to the host format integer
47 static inline int le32_to_int(unsigned char *le32
)
49 return ((le32
[3] << 24) +
56 static inline int is_extended(int part_type
)
58 return (part_type
== 0x5 ||
63 static void print_one_part (dos_partition_t
*p
, int ext_part_sector
, int part_num
)
65 int lba_start
= ext_part_sector
+ le32_to_int (p
->start4
);
66 int lba_size
= le32_to_int (p
->size4
);
68 printf ("%5d\t\t%10d\t%10d\t%2x%s\n",
69 part_num
, lba_start
, lba_size
, p
->sys_ind
,
70 (is_extended (p
->sys_ind
) ? " Extd" : ""));
73 static int test_block_type(unsigned char *buffer
)
75 if((buffer
[DOS_PART_MAGIC_OFFSET
+ 0] != 0x55) ||
76 (buffer
[DOS_PART_MAGIC_OFFSET
+ 1] != 0xaa) ) {
78 } /* no DOS Signature at all */
79 if (strncmp((char *)&buffer
[DOS_PBR_FSTYPE_OFFSET
],"FAT",3)==0 ||
80 strncmp((char *)&buffer
[DOS_PBR32_FSTYPE_OFFSET
],"FAT32",5)==0) {
81 return DOS_PBR
; /* is PBR */
83 return DOS_MBR
; /* Is MBR */
87 int test_part_dos (block_dev_desc_t
*dev_desc
)
89 ALLOC_CACHE_ALIGN_BUFFER(unsigned char, buffer
, dev_desc
->blksz
);
91 if ((dev_desc
->block_read(dev_desc
->dev
, 0, 1, (ulong
*) buffer
) != 1) ||
92 (buffer
[DOS_PART_MAGIC_OFFSET
+ 0] != 0x55) ||
93 (buffer
[DOS_PART_MAGIC_OFFSET
+ 1] != 0xaa) ) {
99 /* Print a partition that is relative to its Extended partition table
101 static void print_partition_extended (block_dev_desc_t
*dev_desc
, int ext_part_sector
, int relative
,
104 ALLOC_CACHE_ALIGN_BUFFER(unsigned char, buffer
, dev_desc
->blksz
);
108 if (dev_desc
->block_read(dev_desc
->dev
, ext_part_sector
, 1, (ulong
*) buffer
) != 1) {
109 printf ("** Can't read partition table on %d:%d **\n",
110 dev_desc
->dev
, ext_part_sector
);
113 i
=test_block_type(buffer
);
115 printf ("bad MBR sector signature 0x%02x%02x\n",
116 buffer
[DOS_PART_MAGIC_OFFSET
],
117 buffer
[DOS_PART_MAGIC_OFFSET
+ 1]);
121 printf (" 1\t\t 0\t%10ld\t%2x\n",
122 dev_desc
->lba
, buffer
[DOS_PBR_MEDIA_TYPE_OFFSET
]);
125 /* Print all primary/logical partitions */
126 pt
= (dos_partition_t
*) (buffer
+ DOS_PART_TBL_OFFSET
);
127 for (i
= 0; i
< 4; i
++, pt
++) {
129 * fdisk does not show the extended partitions that
133 if ((pt
->sys_ind
!= 0) &&
134 (ext_part_sector
== 0 || !is_extended (pt
->sys_ind
)) ) {
135 print_one_part (pt
, ext_part_sector
, part_num
);
138 /* Reverse engr the fdisk part# assignment rule! */
139 if ((ext_part_sector
== 0) ||
140 (pt
->sys_ind
!= 0 && !is_extended (pt
->sys_ind
)) ) {
145 /* Follows the extended partitions */
146 pt
= (dos_partition_t
*) (buffer
+ DOS_PART_TBL_OFFSET
);
147 for (i
= 0; i
< 4; i
++, pt
++) {
148 if (is_extended (pt
->sys_ind
)) {
149 int lba_start
= le32_to_int (pt
->start4
) + relative
;
151 print_partition_extended (dev_desc
, lba_start
,
152 ext_part_sector
== 0 ? lba_start
162 /* Print a partition that is relative to its Extended partition table
164 static int get_partition_info_extended (block_dev_desc_t
*dev_desc
, int ext_part_sector
,
165 int relative
, int part_num
,
166 int which_part
, disk_partition_t
*info
)
168 ALLOC_CACHE_ALIGN_BUFFER(unsigned char, buffer
, dev_desc
->blksz
);
172 if (dev_desc
->block_read (dev_desc
->dev
, ext_part_sector
, 1, (ulong
*) buffer
) != 1) {
173 printf ("** Can't read partition table on %d:%d **\n",
174 dev_desc
->dev
, ext_part_sector
);
177 if (buffer
[DOS_PART_MAGIC_OFFSET
] != 0x55 ||
178 buffer
[DOS_PART_MAGIC_OFFSET
+ 1] != 0xaa) {
179 printf ("bad MBR sector signature 0x%02x%02x\n",
180 buffer
[DOS_PART_MAGIC_OFFSET
],
181 buffer
[DOS_PART_MAGIC_OFFSET
+ 1]);
185 /* Print all primary/logical partitions */
186 pt
= (dos_partition_t
*) (buffer
+ DOS_PART_TBL_OFFSET
);
187 for (i
= 0; i
< 4; i
++, pt
++) {
189 * fdisk does not show the extended partitions that
192 if (((pt
->boot_ind
& ~0x80) == 0) &&
193 (pt
->sys_ind
!= 0) &&
194 (part_num
== which_part
) &&
195 (is_extended(pt
->sys_ind
) == 0)) {
197 info
->start
= ext_part_sector
+ le32_to_int (pt
->start4
);
198 info
->size
= le32_to_int (pt
->size4
);
199 switch(dev_desc
->if_type
) {
203 sprintf ((char *)info
->name
, "hd%c%d",
204 'a' + dev_desc
->dev
, part_num
);
207 sprintf ((char *)info
->name
, "sd%c%d",
208 'a' + dev_desc
->dev
, part_num
);
211 sprintf ((char *)info
->name
, "usbd%c%d",
212 'a' + dev_desc
->dev
, part_num
);
215 sprintf ((char *)info
->name
, "docd%c%d",
216 'a' + dev_desc
->dev
, part_num
);
219 sprintf ((char *)info
->name
, "xx%c%d",
220 'a' + dev_desc
->dev
, part_num
);
223 /* sprintf(info->type, "%d, pt->sys_ind); */
224 sprintf ((char *)info
->type
, "U-Boot");
228 /* Reverse engr the fdisk part# assignment rule! */
229 if ((ext_part_sector
== 0) ||
230 (pt
->sys_ind
!= 0 && !is_extended (pt
->sys_ind
)) ) {
235 /* Follows the extended partitions */
236 pt
= (dos_partition_t
*) (buffer
+ DOS_PART_TBL_OFFSET
);
237 for (i
= 0; i
< 4; i
++, pt
++) {
238 if (is_extended (pt
->sys_ind
)) {
239 int lba_start
= le32_to_int (pt
->start4
) + relative
;
241 return get_partition_info_extended (dev_desc
, lba_start
,
242 ext_part_sector
== 0 ? lba_start
: relative
,
243 part_num
, which_part
, info
);
249 void print_part_dos (block_dev_desc_t
*dev_desc
)
251 printf ("Partition Start Sector Num Sectors Type\n");
252 print_partition_extended (dev_desc
, 0, 0, 1);
255 int get_partition_info_dos (block_dev_desc_t
*dev_desc
, int part
, disk_partition_t
* info
)
257 return get_partition_info_extended (dev_desc
, 0, 0, 1, part
, info
);