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Commit | Line | Data |
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fe8c2806 WD |
1 | /* |
2 | * (C) Copyright 2001 | |
3 | * Raymond Lo, [email protected] | |
4 | * Wolfgang Denk, DENX Software Engineering, [email protected]. | |
5 | * | |
1a459660 | 6 | * SPDX-License-Identifier: GPL-2.0+ |
fe8c2806 WD |
7 | */ |
8 | ||
9 | /* | |
10 | * Support for harddisk partitions. | |
11 | * | |
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 | |
15 | */ | |
16 | ||
17 | #include <common.h> | |
18 | #include <command.h> | |
19 | #include <ide.h> | |
cf92e05c | 20 | #include <memalign.h> |
fe8c2806 WD |
21 | #include "part_dos.h" |
22 | ||
2c1af9dc | 23 | #ifdef HAVE_BLOCK_DEVICE |
fe8c2806 | 24 | |
4a36be9b DD |
25 | #define DOS_PART_DEFAULT_SECTOR 512 |
26 | ||
fe8c2806 WD |
27 | /* Convert char[4] in little endian format to the host format integer |
28 | */ | |
d29892ba | 29 | static inline unsigned int le32_to_int(unsigned char *le32) |
fe8c2806 WD |
30 | { |
31 | return ((le32[3] << 24) + | |
32 | (le32[2] << 16) + | |
33 | (le32[1] << 8) + | |
34 | le32[0] | |
35 | ); | |
36 | } | |
37 | ||
38 | static inline int is_extended(int part_type) | |
39 | { | |
40 | return (part_type == 0x5 || | |
41 | part_type == 0xf || | |
42 | part_type == 0x85); | |
43 | } | |
44 | ||
40e0e568 RH |
45 | static inline int is_bootable(dos_partition_t *p) |
46 | { | |
47 | return p->boot_ind == 0x80; | |
48 | } | |
49 | ||
d29892ba | 50 | static void print_one_part(dos_partition_t *p, lbaint_t ext_part_sector, |
e2e9b378 | 51 | int part_num, unsigned int disksig) |
fe8c2806 | 52 | { |
d29892ba SM |
53 | lbaint_t lba_start = ext_part_sector + le32_to_int (p->start4); |
54 | lbaint_t lba_size = le32_to_int (p->size4); | |
fe8c2806 | 55 | |
d29892ba SM |
56 | printf("%3d\t%-10" LBAFlength "u\t%-10" LBAFlength |
57 | "u\t%08x-%02x\t%02x%s%s\n", | |
e2e9b378 | 58 | part_num, lba_start, lba_size, disksig, part_num, p->sys_ind, |
40e0e568 RH |
59 | (is_extended(p->sys_ind) ? " Extd" : ""), |
60 | (is_bootable(p) ? " Boot" : "")); | |
fe8c2806 WD |
61 | } |
62 | ||
7205e407 WD |
63 | static int test_block_type(unsigned char *buffer) |
64 | { | |
9d956e0f EE |
65 | int slot; |
66 | struct dos_partition *p; | |
67 | ||
7205e407 WD |
68 | if((buffer[DOS_PART_MAGIC_OFFSET + 0] != 0x55) || |
69 | (buffer[DOS_PART_MAGIC_OFFSET + 1] != 0xaa) ) { | |
70 | return (-1); | |
71 | } /* no DOS Signature at all */ | |
9d956e0f EE |
72 | p = (struct dos_partition *)&buffer[DOS_PART_TBL_OFFSET]; |
73 | for (slot = 0; slot < 3; slot++) { | |
74 | if (p->boot_ind != 0 && p->boot_ind != 0x80) { | |
75 | if (!slot && | |
76 | (strncmp((char *)&buffer[DOS_PBR_FSTYPE_OFFSET], | |
77 | "FAT", 3) == 0 || | |
78 | strncmp((char *)&buffer[DOS_PBR32_FSTYPE_OFFSET], | |
79 | "FAT32", 5) == 0)) { | |
80 | return DOS_PBR; /* is PBR */ | |
81 | } else { | |
82 | return -1; | |
83 | } | |
84 | } | |
66c2d73c | 85 | } |
7205e407 WD |
86 | return DOS_MBR; /* Is MBR */ |
87 | } | |
88 | ||
fe8c2806 | 89 | |
084bf4c2 | 90 | static int part_test_dos(struct blk_desc *dev_desc) |
fe8c2806 | 91 | { |
dec049d9 | 92 | ALLOC_CACHE_ALIGN_BUFFER(unsigned char, buffer, dev_desc->blksz); |
fe8c2806 | 93 | |
2a981dc2 | 94 | if (blk_dread(dev_desc, 0, 1, (ulong *)buffer) != 1) |
d1efb644 SW |
95 | return -1; |
96 | ||
97 | if (test_block_type(buffer) != DOS_MBR) | |
98 | return -1; | |
99 | ||
100 | return 0; | |
fe8c2806 WD |
101 | } |
102 | ||
103 | /* Print a partition that is relative to its Extended partition table | |
104 | */ | |
4101f687 | 105 | static void print_partition_extended(struct blk_desc *dev_desc, |
d29892ba SM |
106 | lbaint_t ext_part_sector, |
107 | lbaint_t relative, | |
e2e9b378 | 108 | int part_num, unsigned int disksig) |
fe8c2806 | 109 | { |
dec049d9 | 110 | ALLOC_CACHE_ALIGN_BUFFER(unsigned char, buffer, dev_desc->blksz); |
fe8c2806 WD |
111 | dos_partition_t *pt; |
112 | int i; | |
113 | ||
2a981dc2 | 114 | if (blk_dread(dev_desc, ext_part_sector, 1, (ulong *)buffer) != 1) { |
d29892ba | 115 | printf ("** Can't read partition table on %d:" LBAFU " **\n", |
bcce53d0 | 116 | dev_desc->devnum, ext_part_sector); |
fe8c2806 WD |
117 | return; |
118 | } | |
7205e407 | 119 | i=test_block_type(buffer); |
d1efb644 | 120 | if (i != DOS_MBR) { |
fe8c2806 WD |
121 | printf ("bad MBR sector signature 0x%02x%02x\n", |
122 | buffer[DOS_PART_MAGIC_OFFSET], | |
123 | buffer[DOS_PART_MAGIC_OFFSET + 1]); | |
124 | return; | |
125 | } | |
d1efb644 | 126 | |
e2e9b378 SW |
127 | if (!ext_part_sector) |
128 | disksig = le32_to_int(&buffer[DOS_PART_DISKSIG_OFFSET]); | |
129 | ||
fe8c2806 WD |
130 | /* Print all primary/logical partitions */ |
131 | pt = (dos_partition_t *) (buffer + DOS_PART_TBL_OFFSET); | |
132 | for (i = 0; i < 4; i++, pt++) { | |
133 | /* | |
8bde7f77 | 134 | * fdisk does not show the extended partitions that |
fe8c2806 WD |
135 | * are not in the MBR |
136 | */ | |
137 | ||
138 | if ((pt->sys_ind != 0) && | |
139 | (ext_part_sector == 0 || !is_extended (pt->sys_ind)) ) { | |
e2e9b378 | 140 | print_one_part(pt, ext_part_sector, part_num, disksig); |
fe8c2806 WD |
141 | } |
142 | ||
143 | /* Reverse engr the fdisk part# assignment rule! */ | |
144 | if ((ext_part_sector == 0) || | |
145 | (pt->sys_ind != 0 && !is_extended (pt->sys_ind)) ) { | |
146 | part_num++; | |
147 | } | |
148 | } | |
149 | ||
150 | /* Follows the extended partitions */ | |
151 | pt = (dos_partition_t *) (buffer + DOS_PART_TBL_OFFSET); | |
152 | for (i = 0; i < 4; i++, pt++) { | |
153 | if (is_extended (pt->sys_ind)) { | |
d29892ba SM |
154 | lbaint_t lba_start |
155 | = le32_to_int (pt->start4) + relative; | |
fe8c2806 | 156 | |
304b5711 SW |
157 | print_partition_extended(dev_desc, lba_start, |
158 | ext_part_sector == 0 ? lba_start : relative, | |
e2e9b378 | 159 | part_num, disksig); |
fe8c2806 WD |
160 | } |
161 | } | |
162 | ||
163 | return; | |
164 | } | |
165 | ||
166 | ||
167 | /* Print a partition that is relative to its Extended partition table | |
168 | */ | |
3e8bd469 SG |
169 | static int part_get_info_extended(struct blk_desc *dev_desc, |
170 | lbaint_t ext_part_sector, lbaint_t relative, | |
171 | int part_num, int which_part, | |
172 | disk_partition_t *info, unsigned int disksig) | |
fe8c2806 | 173 | { |
dec049d9 | 174 | ALLOC_CACHE_ALIGN_BUFFER(unsigned char, buffer, dev_desc->blksz); |
fe8c2806 WD |
175 | dos_partition_t *pt; |
176 | int i; | |
4a36be9b | 177 | int dos_type; |
fe8c2806 | 178 | |
2a981dc2 | 179 | if (blk_dread(dev_desc, ext_part_sector, 1, (ulong *)buffer) != 1) { |
d29892ba | 180 | printf ("** Can't read partition table on %d:" LBAFU " **\n", |
bcce53d0 | 181 | dev_desc->devnum, ext_part_sector); |
fe8c2806 WD |
182 | return -1; |
183 | } | |
184 | if (buffer[DOS_PART_MAGIC_OFFSET] != 0x55 || | |
185 | buffer[DOS_PART_MAGIC_OFFSET + 1] != 0xaa) { | |
186 | printf ("bad MBR sector signature 0x%02x%02x\n", | |
187 | buffer[DOS_PART_MAGIC_OFFSET], | |
188 | buffer[DOS_PART_MAGIC_OFFSET + 1]); | |
189 | return -1; | |
190 | } | |
191 | ||
d27b5f93 SW |
192 | #ifdef CONFIG_PARTITION_UUIDS |
193 | if (!ext_part_sector) | |
194 | disksig = le32_to_int(&buffer[DOS_PART_DISKSIG_OFFSET]); | |
195 | #endif | |
196 | ||
fe8c2806 WD |
197 | /* Print all primary/logical partitions */ |
198 | pt = (dos_partition_t *) (buffer + DOS_PART_TBL_OFFSET); | |
199 | for (i = 0; i < 4; i++, pt++) { | |
200 | /* | |
8bde7f77 WD |
201 | * fdisk does not show the extended partitions that |
202 | * are not in the MBR | |
fe8c2806 | 203 | */ |
78f4ca79 DM |
204 | if (((pt->boot_ind & ~0x80) == 0) && |
205 | (pt->sys_ind != 0) && | |
7f70e853 WD |
206 | (part_num == which_part) && |
207 | (is_extended(pt->sys_ind) == 0)) { | |
4a36be9b | 208 | info->blksz = DOS_PART_DEFAULT_SECTOR; |
e04350d2 SR |
209 | info->start = (lbaint_t)(ext_part_sector + |
210 | le32_to_int(pt->start4)); | |
211 | info->size = (lbaint_t)le32_to_int(pt->size4); | |
fe8c2806 WD |
212 | switch(dev_desc->if_type) { |
213 | case IF_TYPE_IDE: | |
c7057b52 | 214 | case IF_TYPE_SATA: |
fe8c2806 | 215 | case IF_TYPE_ATAPI: |
bcce53d0 SG |
216 | sprintf((char *)info->name, "hd%c%d", |
217 | 'a' + dev_desc->devnum, | |
218 | part_num); | |
fe8c2806 WD |
219 | break; |
220 | case IF_TYPE_SCSI: | |
bcce53d0 SG |
221 | sprintf((char *)info->name, "sd%c%d", |
222 | 'a' + dev_desc->devnum, | |
223 | part_num); | |
fe8c2806 WD |
224 | break; |
225 | case IF_TYPE_USB: | |
bcce53d0 SG |
226 | sprintf((char *)info->name, "usbd%c%d", |
227 | 'a' + dev_desc->devnum, | |
228 | part_num); | |
fe8c2806 WD |
229 | break; |
230 | case IF_TYPE_DOC: | |
bcce53d0 SG |
231 | sprintf((char *)info->name, "docd%c%d", |
232 | 'a' + dev_desc->devnum, | |
233 | part_num); | |
fe8c2806 WD |
234 | break; |
235 | default: | |
bcce53d0 SG |
236 | sprintf((char *)info->name, "xx%c%d", |
237 | 'a' + dev_desc->devnum, | |
238 | part_num); | |
fe8c2806 WD |
239 | break; |
240 | } | |
241 | /* sprintf(info->type, "%d, pt->sys_ind); */ | |
192bc694 | 242 | strcpy((char *)info->type, "U-Boot"); |
40e0e568 | 243 | info->bootable = is_bootable(pt); |
d27b5f93 SW |
244 | #ifdef CONFIG_PARTITION_UUIDS |
245 | sprintf(info->uuid, "%08x-%02x", disksig, part_num); | |
246 | #endif | |
fe8c2806 WD |
247 | return 0; |
248 | } | |
249 | ||
250 | /* Reverse engr the fdisk part# assignment rule! */ | |
251 | if ((ext_part_sector == 0) || | |
252 | (pt->sys_ind != 0 && !is_extended (pt->sys_ind)) ) { | |
253 | part_num++; | |
254 | } | |
255 | } | |
256 | ||
257 | /* Follows the extended partitions */ | |
258 | pt = (dos_partition_t *) (buffer + DOS_PART_TBL_OFFSET); | |
259 | for (i = 0; i < 4; i++, pt++) { | |
260 | if (is_extended (pt->sys_ind)) { | |
d29892ba SM |
261 | lbaint_t lba_start |
262 | = le32_to_int (pt->start4) + relative; | |
fe8c2806 | 263 | |
3e8bd469 | 264 | return part_get_info_extended(dev_desc, lba_start, |
fe8c2806 | 265 | ext_part_sector == 0 ? lba_start : relative, |
d27b5f93 | 266 | part_num, which_part, info, disksig); |
fe8c2806 WD |
267 | } |
268 | } | |
4a36be9b DD |
269 | |
270 | /* Check for DOS PBR if no partition is found */ | |
271 | dos_type = test_block_type(buffer); | |
272 | ||
273 | if (dos_type == DOS_PBR) { | |
274 | info->start = 0; | |
275 | info->size = dev_desc->lba; | |
276 | info->blksz = DOS_PART_DEFAULT_SECTOR; | |
277 | info->bootable = 0; | |
192bc694 | 278 | strcpy((char *)info->type, "U-Boot"); |
4a36be9b DD |
279 | #ifdef CONFIG_PARTITION_UUIDS |
280 | info->uuid[0] = 0; | |
281 | #endif | |
282 | return 0; | |
283 | } | |
284 | ||
fe8c2806 WD |
285 | return -1; |
286 | } | |
287 | ||
084bf4c2 | 288 | void part_print_dos(struct blk_desc *dev_desc) |
fe8c2806 | 289 | { |
e2e9b378 SW |
290 | printf("Part\tStart Sector\tNum Sectors\tUUID\t\tType\n"); |
291 | print_partition_extended(dev_desc, 0, 0, 1, 0); | |
fe8c2806 WD |
292 | } |
293 | ||
3e8bd469 SG |
294 | int part_get_info_dos(struct blk_desc *dev_desc, int part, |
295 | disk_partition_t *info) | |
fe8c2806 | 296 | { |
3e8bd469 | 297 | return part_get_info_extended(dev_desc, 0, 0, 1, part, info, 0); |
fe8c2806 WD |
298 | } |
299 | ||
96e5b03c SG |
300 | U_BOOT_PART_TYPE(dos) = { |
301 | .name = "DOS", | |
302 | .part_type = PART_TYPE_DOS, | |
3e8bd469 | 303 | .get_info = part_get_info_ptr(part_get_info_dos), |
084bf4c2 SG |
304 | .print = part_print_ptr(part_print_dos), |
305 | .test = part_test_dos, | |
96e5b03c | 306 | }; |
fe8c2806 | 307 | |
cde5c64d | 308 | #endif |