]>
git.ipfire.org Git - thirdparty/u-boot.git/blob - disk/part_dos.c
3 * Raymond Lo, lo@routefree.com
4 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
6 * SPDX-License-Identifier: GPL-2.0+
10 * Support for harddisk partitions.
12 * To be compatible with LinuxPPC and Apple we use the standard Apple
13 * SCSI disk partitioning scheme. For more information see:
14 * http://developer.apple.com/techpubs/mac/Devices/Devices-126.html#MARKER-14-92
22 #ifdef HAVE_BLOCK_DEVICE
24 /* Convert char[4] in little endian format to the host format integer
26 static inline int le32_to_int(unsigned char *le32
)
28 return ((le32
[3] << 24) +
35 static inline int is_extended(int part_type
)
37 return (part_type
== 0x5 ||
42 static inline int is_bootable(dos_partition_t
*p
)
44 return p
->boot_ind
== 0x80;
47 static void print_one_part(dos_partition_t
*p
, int ext_part_sector
,
48 int part_num
, unsigned int disksig
)
50 int lba_start
= ext_part_sector
+ le32_to_int (p
->start4
);
51 int lba_size
= le32_to_int (p
->size4
);
53 printf("%3d\t%-10d\t%-10d\t%08x-%02x\t%02x%s%s\n",
54 part_num
, lba_start
, lba_size
, disksig
, part_num
, p
->sys_ind
,
55 (is_extended(p
->sys_ind
) ? " Extd" : ""),
56 (is_bootable(p
) ? " Boot" : ""));
59 static int test_block_type(unsigned char *buffer
)
62 struct dos_partition
*p
;
64 if((buffer
[DOS_PART_MAGIC_OFFSET
+ 0] != 0x55) ||
65 (buffer
[DOS_PART_MAGIC_OFFSET
+ 1] != 0xaa) ) {
67 } /* no DOS Signature at all */
68 p
= (struct dos_partition
*)&buffer
[DOS_PART_TBL_OFFSET
];
69 for (slot
= 0; slot
< 3; slot
++) {
70 if (p
->boot_ind
!= 0 && p
->boot_ind
!= 0x80) {
72 (strncmp((char *)&buffer
[DOS_PBR_FSTYPE_OFFSET
],
74 strncmp((char *)&buffer
[DOS_PBR32_FSTYPE_OFFSET
],
76 return DOS_PBR
; /* is PBR */
82 return DOS_MBR
; /* Is MBR */
86 int test_part_dos (block_dev_desc_t
*dev_desc
)
88 ALLOC_CACHE_ALIGN_BUFFER(unsigned char, buffer
, dev_desc
->blksz
);
90 if (dev_desc
->block_read(dev_desc
->dev
, 0, 1, (ulong
*) buffer
) != 1)
93 if (test_block_type(buffer
) != DOS_MBR
)
99 /* Print a partition that is relative to its Extended partition table
101 static void print_partition_extended(block_dev_desc_t
*dev_desc
,
102 int ext_part_sector
, int relative
,
103 int part_num
, unsigned int disksig
)
105 ALLOC_CACHE_ALIGN_BUFFER(unsigned char, buffer
, dev_desc
->blksz
);
109 if (dev_desc
->block_read(dev_desc
->dev
, ext_part_sector
, 1, (ulong
*) buffer
) != 1) {
110 printf ("** Can't read partition table on %d:%d **\n",
111 dev_desc
->dev
, ext_part_sector
);
114 i
=test_block_type(buffer
);
116 printf ("bad MBR sector signature 0x%02x%02x\n",
117 buffer
[DOS_PART_MAGIC_OFFSET
],
118 buffer
[DOS_PART_MAGIC_OFFSET
+ 1]);
122 if (!ext_part_sector
)
123 disksig
= le32_to_int(&buffer
[DOS_PART_DISKSIG_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
, disksig
);
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
: relative
,
161 /* Print a partition that is relative to its Extended partition table
163 static int get_partition_info_extended (block_dev_desc_t
*dev_desc
, int ext_part_sector
,
164 int relative
, int part_num
,
165 int which_part
, disk_partition_t
*info
,
166 unsigned int disksig
)
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 #ifdef CONFIG_PARTITION_UUIDS
186 if (!ext_part_sector
)
187 disksig
= le32_to_int(&buffer
[DOS_PART_DISKSIG_OFFSET
]);
190 /* Print all primary/logical partitions */
191 pt
= (dos_partition_t
*) (buffer
+ DOS_PART_TBL_OFFSET
);
192 for (i
= 0; i
< 4; i
++, pt
++) {
194 * fdisk does not show the extended partitions that
197 if (((pt
->boot_ind
& ~0x80) == 0) &&
198 (pt
->sys_ind
!= 0) &&
199 (part_num
== which_part
) &&
200 (is_extended(pt
->sys_ind
) == 0)) {
202 info
->start
= ext_part_sector
+ le32_to_int (pt
->start4
);
203 info
->size
= le32_to_int (pt
->size4
);
204 switch(dev_desc
->if_type
) {
208 sprintf ((char *)info
->name
, "hd%c%d",
209 'a' + dev_desc
->dev
, part_num
);
212 sprintf ((char *)info
->name
, "sd%c%d",
213 'a' + dev_desc
->dev
, part_num
);
216 sprintf ((char *)info
->name
, "usbd%c%d",
217 'a' + dev_desc
->dev
, part_num
);
220 sprintf ((char *)info
->name
, "docd%c%d",
221 'a' + dev_desc
->dev
, part_num
);
224 sprintf ((char *)info
->name
, "xx%c%d",
225 'a' + dev_desc
->dev
, part_num
);
228 /* sprintf(info->type, "%d, pt->sys_ind); */
229 sprintf ((char *)info
->type
, "U-Boot");
230 info
->bootable
= is_bootable(pt
);
231 #ifdef CONFIG_PARTITION_UUIDS
232 sprintf(info
->uuid
, "%08x-%02x", disksig
, part_num
);
237 /* Reverse engr the fdisk part# assignment rule! */
238 if ((ext_part_sector
== 0) ||
239 (pt
->sys_ind
!= 0 && !is_extended (pt
->sys_ind
)) ) {
244 /* Follows the extended partitions */
245 pt
= (dos_partition_t
*) (buffer
+ DOS_PART_TBL_OFFSET
);
246 for (i
= 0; i
< 4; i
++, pt
++) {
247 if (is_extended (pt
->sys_ind
)) {
248 int lba_start
= le32_to_int (pt
->start4
) + relative
;
250 return get_partition_info_extended (dev_desc
, lba_start
,
251 ext_part_sector
== 0 ? lba_start
: relative
,
252 part_num
, which_part
, info
, disksig
);
258 void print_part_dos (block_dev_desc_t
*dev_desc
)
260 printf("Part\tStart Sector\tNum Sectors\tUUID\t\tType\n");
261 print_partition_extended(dev_desc
, 0, 0, 1, 0);
264 int get_partition_info_dos (block_dev_desc_t
*dev_desc
, int part
, disk_partition_t
* info
)
266 return get_partition_info_extended(dev_desc
, 0, 0, 1, part
, info
, 0);