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Commit | Line | Data |
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fe8c2806 WD |
1 | /* |
2 | * (C) Copyright 2001 | |
3 | * Raymond Lo, lo@routefree.com | |
4 | * Wolfgang Denk, DENX Software Engineering, wd@denx.de. | |
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 | */ | |
29 | static inline int le32_to_int(unsigned char *le32) | |
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 | ||
304b5711 | 50 | static void print_one_part(dos_partition_t *p, int ext_part_sector, |
e2e9b378 | 51 | int part_num, unsigned int disksig) |
fe8c2806 WD |
52 | { |
53 | int lba_start = ext_part_sector + le32_to_int (p->start4); | |
54 | int lba_size = le32_to_int (p->size4); | |
55 | ||
e2e9b378 SW |
56 | printf("%3d\t%-10d\t%-10d\t%08x-%02x\t%02x%s%s\n", |
57 | part_num, lba_start, lba_size, disksig, part_num, p->sys_ind, | |
40e0e568 RH |
58 | (is_extended(p->sys_ind) ? " Extd" : ""), |
59 | (is_bootable(p) ? " Boot" : "")); | |
fe8c2806 WD |
60 | } |
61 | ||
7205e407 WD |
62 | static int test_block_type(unsigned char *buffer) |
63 | { | |
9d956e0f EE |
64 | int slot; |
65 | struct dos_partition *p; | |
66 | ||
7205e407 WD |
67 | if((buffer[DOS_PART_MAGIC_OFFSET + 0] != 0x55) || |
68 | (buffer[DOS_PART_MAGIC_OFFSET + 1] != 0xaa) ) { | |
69 | return (-1); | |
70 | } /* no DOS Signature at all */ | |
9d956e0f EE |
71 | p = (struct dos_partition *)&buffer[DOS_PART_TBL_OFFSET]; |
72 | for (slot = 0; slot < 3; slot++) { | |
73 | if (p->boot_ind != 0 && p->boot_ind != 0x80) { | |
74 | if (!slot && | |
75 | (strncmp((char *)&buffer[DOS_PBR_FSTYPE_OFFSET], | |
76 | "FAT", 3) == 0 || | |
77 | strncmp((char *)&buffer[DOS_PBR32_FSTYPE_OFFSET], | |
78 | "FAT32", 5) == 0)) { | |
79 | return DOS_PBR; /* is PBR */ | |
80 | } else { | |
81 | return -1; | |
82 | } | |
83 | } | |
66c2d73c | 84 | } |
7205e407 WD |
85 | return DOS_MBR; /* Is MBR */ |
86 | } | |
87 | ||
fe8c2806 | 88 | |
fe8c2806 WD |
89 | int test_part_dos (block_dev_desc_t *dev_desc) |
90 | { | |
dec049d9 | 91 | ALLOC_CACHE_ALIGN_BUFFER(unsigned char, buffer, dev_desc->blksz); |
fe8c2806 | 92 | |
d1efb644 SW |
93 | if (dev_desc->block_read(dev_desc->dev, 0, 1, (ulong *) buffer) != 1) |
94 | return -1; | |
95 | ||
96 | if (test_block_type(buffer) != DOS_MBR) | |
97 | return -1; | |
98 | ||
99 | return 0; | |
fe8c2806 WD |
100 | } |
101 | ||
102 | /* Print a partition that is relative to its Extended partition table | |
103 | */ | |
304b5711 SW |
104 | static void print_partition_extended(block_dev_desc_t *dev_desc, |
105 | int ext_part_sector, int relative, | |
e2e9b378 | 106 | int part_num, unsigned int disksig) |
fe8c2806 | 107 | { |
dec049d9 | 108 | ALLOC_CACHE_ALIGN_BUFFER(unsigned char, buffer, dev_desc->blksz); |
fe8c2806 WD |
109 | dos_partition_t *pt; |
110 | int i; | |
111 | ||
112 | if (dev_desc->block_read(dev_desc->dev, ext_part_sector, 1, (ulong *) buffer) != 1) { | |
113 | printf ("** Can't read partition table on %d:%d **\n", | |
114 | dev_desc->dev, ext_part_sector); | |
115 | return; | |
116 | } | |
7205e407 | 117 | i=test_block_type(buffer); |
d1efb644 | 118 | if (i != DOS_MBR) { |
fe8c2806 WD |
119 | printf ("bad MBR sector signature 0x%02x%02x\n", |
120 | buffer[DOS_PART_MAGIC_OFFSET], | |
121 | buffer[DOS_PART_MAGIC_OFFSET + 1]); | |
122 | return; | |
123 | } | |
d1efb644 | 124 | |
e2e9b378 SW |
125 | if (!ext_part_sector) |
126 | disksig = le32_to_int(&buffer[DOS_PART_DISKSIG_OFFSET]); | |
127 | ||
fe8c2806 WD |
128 | /* Print all primary/logical partitions */ |
129 | pt = (dos_partition_t *) (buffer + DOS_PART_TBL_OFFSET); | |
130 | for (i = 0; i < 4; i++, pt++) { | |
131 | /* | |
8bde7f77 | 132 | * fdisk does not show the extended partitions that |
fe8c2806 WD |
133 | * are not in the MBR |
134 | */ | |
135 | ||
136 | if ((pt->sys_ind != 0) && | |
137 | (ext_part_sector == 0 || !is_extended (pt->sys_ind)) ) { | |
e2e9b378 | 138 | print_one_part(pt, ext_part_sector, part_num, disksig); |
fe8c2806 WD |
139 | } |
140 | ||
141 | /* Reverse engr the fdisk part# assignment rule! */ | |
142 | if ((ext_part_sector == 0) || | |
143 | (pt->sys_ind != 0 && !is_extended (pt->sys_ind)) ) { | |
144 | part_num++; | |
145 | } | |
146 | } | |
147 | ||
148 | /* Follows the extended partitions */ | |
149 | pt = (dos_partition_t *) (buffer + DOS_PART_TBL_OFFSET); | |
150 | for (i = 0; i < 4; i++, pt++) { | |
151 | if (is_extended (pt->sys_ind)) { | |
152 | int lba_start = le32_to_int (pt->start4) + relative; | |
153 | ||
304b5711 SW |
154 | print_partition_extended(dev_desc, lba_start, |
155 | ext_part_sector == 0 ? lba_start : relative, | |
e2e9b378 | 156 | part_num, disksig); |
fe8c2806 WD |
157 | } |
158 | } | |
159 | ||
160 | return; | |
161 | } | |
162 | ||
163 | ||
164 | /* Print a partition that is relative to its Extended partition table | |
165 | */ | |
166 | static int get_partition_info_extended (block_dev_desc_t *dev_desc, int ext_part_sector, | |
167 | int relative, int part_num, | |
d27b5f93 SW |
168 | int which_part, disk_partition_t *info, |
169 | unsigned int disksig) | |
fe8c2806 | 170 | { |
dec049d9 | 171 | ALLOC_CACHE_ALIGN_BUFFER(unsigned char, buffer, dev_desc->blksz); |
fe8c2806 WD |
172 | dos_partition_t *pt; |
173 | int i; | |
4a36be9b | 174 | int dos_type; |
fe8c2806 WD |
175 | |
176 | if (dev_desc->block_read (dev_desc->dev, ext_part_sector, 1, (ulong *) buffer) != 1) { | |
177 | printf ("** Can't read partition table on %d:%d **\n", | |
178 | dev_desc->dev, ext_part_sector); | |
179 | return -1; | |
180 | } | |
181 | if (buffer[DOS_PART_MAGIC_OFFSET] != 0x55 || | |
182 | buffer[DOS_PART_MAGIC_OFFSET + 1] != 0xaa) { | |
183 | printf ("bad MBR sector signature 0x%02x%02x\n", | |
184 | buffer[DOS_PART_MAGIC_OFFSET], | |
185 | buffer[DOS_PART_MAGIC_OFFSET + 1]); | |
186 | return -1; | |
187 | } | |
188 | ||
d27b5f93 SW |
189 | #ifdef CONFIG_PARTITION_UUIDS |
190 | if (!ext_part_sector) | |
191 | disksig = le32_to_int(&buffer[DOS_PART_DISKSIG_OFFSET]); | |
192 | #endif | |
193 | ||
fe8c2806 WD |
194 | /* Print all primary/logical partitions */ |
195 | pt = (dos_partition_t *) (buffer + DOS_PART_TBL_OFFSET); | |
196 | for (i = 0; i < 4; i++, pt++) { | |
197 | /* | |
8bde7f77 WD |
198 | * fdisk does not show the extended partitions that |
199 | * are not in the MBR | |
fe8c2806 | 200 | */ |
78f4ca79 DM |
201 | if (((pt->boot_ind & ~0x80) == 0) && |
202 | (pt->sys_ind != 0) && | |
7f70e853 WD |
203 | (part_num == which_part) && |
204 | (is_extended(pt->sys_ind) == 0)) { | |
4a36be9b | 205 | info->blksz = DOS_PART_DEFAULT_SECTOR; |
e04350d2 SR |
206 | info->start = (lbaint_t)(ext_part_sector + |
207 | le32_to_int(pt->start4)); | |
208 | info->size = (lbaint_t)le32_to_int(pt->size4); | |
fe8c2806 WD |
209 | switch(dev_desc->if_type) { |
210 | case IF_TYPE_IDE: | |
c7057b52 | 211 | case IF_TYPE_SATA: |
fe8c2806 | 212 | case IF_TYPE_ATAPI: |
71665528 WD |
213 | sprintf ((char *)info->name, "hd%c%d", |
214 | 'a' + dev_desc->dev, part_num); | |
fe8c2806 WD |
215 | break; |
216 | case IF_TYPE_SCSI: | |
71665528 WD |
217 | sprintf ((char *)info->name, "sd%c%d", |
218 | 'a' + dev_desc->dev, part_num); | |
fe8c2806 WD |
219 | break; |
220 | case IF_TYPE_USB: | |
71665528 WD |
221 | sprintf ((char *)info->name, "usbd%c%d", |
222 | 'a' + dev_desc->dev, part_num); | |
fe8c2806 WD |
223 | break; |
224 | case IF_TYPE_DOC: | |
71665528 WD |
225 | sprintf ((char *)info->name, "docd%c%d", |
226 | 'a' + dev_desc->dev, part_num); | |
fe8c2806 WD |
227 | break; |
228 | default: | |
71665528 WD |
229 | sprintf ((char *)info->name, "xx%c%d", |
230 | 'a' + dev_desc->dev, part_num); | |
fe8c2806 WD |
231 | break; |
232 | } | |
233 | /* sprintf(info->type, "%d, pt->sys_ind); */ | |
77ddac94 | 234 | sprintf ((char *)info->type, "U-Boot"); |
40e0e568 | 235 | info->bootable = is_bootable(pt); |
d27b5f93 SW |
236 | #ifdef CONFIG_PARTITION_UUIDS |
237 | sprintf(info->uuid, "%08x-%02x", disksig, part_num); | |
238 | #endif | |
fe8c2806 WD |
239 | return 0; |
240 | } | |
241 | ||
242 | /* Reverse engr the fdisk part# assignment rule! */ | |
243 | if ((ext_part_sector == 0) || | |
244 | (pt->sys_ind != 0 && !is_extended (pt->sys_ind)) ) { | |
245 | part_num++; | |
246 | } | |
247 | } | |
248 | ||
249 | /* Follows the extended partitions */ | |
250 | pt = (dos_partition_t *) (buffer + DOS_PART_TBL_OFFSET); | |
251 | for (i = 0; i < 4; i++, pt++) { | |
252 | if (is_extended (pt->sys_ind)) { | |
253 | int lba_start = le32_to_int (pt->start4) + relative; | |
254 | ||
255 | return get_partition_info_extended (dev_desc, lba_start, | |
256 | ext_part_sector == 0 ? lba_start : relative, | |
d27b5f93 | 257 | part_num, which_part, info, disksig); |
fe8c2806 WD |
258 | } |
259 | } | |
4a36be9b DD |
260 | |
261 | /* Check for DOS PBR if no partition is found */ | |
262 | dos_type = test_block_type(buffer); | |
263 | ||
264 | if (dos_type == DOS_PBR) { | |
265 | info->start = 0; | |
266 | info->size = dev_desc->lba; | |
267 | info->blksz = DOS_PART_DEFAULT_SECTOR; | |
268 | info->bootable = 0; | |
269 | sprintf ((char *)info->type, "U-Boot"); | |
270 | #ifdef CONFIG_PARTITION_UUIDS | |
271 | info->uuid[0] = 0; | |
272 | #endif | |
273 | return 0; | |
274 | } | |
275 | ||
fe8c2806 WD |
276 | return -1; |
277 | } | |
278 | ||
279 | void print_part_dos (block_dev_desc_t *dev_desc) | |
280 | { | |
e2e9b378 SW |
281 | printf("Part\tStart Sector\tNum Sectors\tUUID\t\tType\n"); |
282 | print_partition_extended(dev_desc, 0, 0, 1, 0); | |
fe8c2806 WD |
283 | } |
284 | ||
285 | int get_partition_info_dos (block_dev_desc_t *dev_desc, int part, disk_partition_t * info) | |
286 | { | |
d27b5f93 | 287 | return get_partition_info_extended(dev_desc, 0, 0, 1, part, info, 0); |
fe8c2806 WD |
288 | } |
289 | ||
290 | ||
cde5c64d | 291 | #endif |