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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 | * | |
6 | * See file CREDITS for list of people who contributed to this | |
7 | * project. | |
8 | * | |
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. | |
13 | * | |
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. | |
18 | * | |
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, | |
22 | * MA 02111-1307 USA | |
23 | */ | |
24 | ||
25 | /* | |
26 | * Support for harddisk partitions. | |
27 | * | |
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 | |
31 | */ | |
32 | ||
33 | #include <common.h> | |
34 | #include <command.h> | |
35 | #include <ide.h> | |
fe8c2806 WD |
36 | #include "part_dos.h" |
37 | ||
7bd2722e MF |
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) | |
fe8c2806 WD |
44 | |
45 | /* Convert char[4] in little endian format to the host format integer | |
46 | */ | |
47 | static inline int le32_to_int(unsigned char *le32) | |
48 | { | |
49 | return ((le32[3] << 24) + | |
50 | (le32[2] << 16) + | |
51 | (le32[1] << 8) + | |
52 | le32[0] | |
53 | ); | |
54 | } | |
55 | ||
56 | static inline int is_extended(int part_type) | |
57 | { | |
58 | return (part_type == 0x5 || | |
59 | part_type == 0xf || | |
60 | part_type == 0x85); | |
61 | } | |
62 | ||
40e0e568 RH |
63 | static inline int is_bootable(dos_partition_t *p) |
64 | { | |
65 | return p->boot_ind == 0x80; | |
66 | } | |
67 | ||
304b5711 SW |
68 | static void print_one_part(dos_partition_t *p, int ext_part_sector, |
69 | int part_num) | |
fe8c2806 WD |
70 | { |
71 | int lba_start = ext_part_sector + le32_to_int (p->start4); | |
72 | int lba_size = le32_to_int (p->size4); | |
73 | ||
40e0e568 | 74 | printf("%5d\t\t%10d\t%10d\t%2x%s%s\n", |
fe8c2806 | 75 | part_num, lba_start, lba_size, p->sys_ind, |
40e0e568 RH |
76 | (is_extended(p->sys_ind) ? " Extd" : ""), |
77 | (is_bootable(p) ? " Boot" : "")); | |
fe8c2806 WD |
78 | } |
79 | ||
7205e407 WD |
80 | static int test_block_type(unsigned char *buffer) |
81 | { | |
82 | if((buffer[DOS_PART_MAGIC_OFFSET + 0] != 0x55) || | |
83 | (buffer[DOS_PART_MAGIC_OFFSET + 1] != 0xaa) ) { | |
84 | return (-1); | |
85 | } /* no DOS Signature at all */ | |
66c2d73c WD |
86 | if (strncmp((char *)&buffer[DOS_PBR_FSTYPE_OFFSET],"FAT",3)==0 || |
87 | strncmp((char *)&buffer[DOS_PBR32_FSTYPE_OFFSET],"FAT32",5)==0) { | |
7205e407 | 88 | return DOS_PBR; /* is PBR */ |
66c2d73c | 89 | } |
7205e407 WD |
90 | return DOS_MBR; /* Is MBR */ |
91 | } | |
92 | ||
fe8c2806 | 93 | |
fe8c2806 WD |
94 | int test_part_dos (block_dev_desc_t *dev_desc) |
95 | { | |
dec049d9 | 96 | ALLOC_CACHE_ALIGN_BUFFER(unsigned char, buffer, dev_desc->blksz); |
fe8c2806 | 97 | |
d1efb644 SW |
98 | if (dev_desc->block_read(dev_desc->dev, 0, 1, (ulong *) buffer) != 1) |
99 | return -1; | |
100 | ||
101 | if (test_block_type(buffer) != DOS_MBR) | |
102 | return -1; | |
103 | ||
104 | return 0; | |
fe8c2806 WD |
105 | } |
106 | ||
107 | /* Print a partition that is relative to its Extended partition table | |
108 | */ | |
304b5711 SW |
109 | static void print_partition_extended(block_dev_desc_t *dev_desc, |
110 | int ext_part_sector, int relative, | |
111 | int part_num) | |
fe8c2806 | 112 | { |
dec049d9 | 113 | ALLOC_CACHE_ALIGN_BUFFER(unsigned char, buffer, dev_desc->blksz); |
fe8c2806 WD |
114 | dos_partition_t *pt; |
115 | int i; | |
116 | ||
117 | if (dev_desc->block_read(dev_desc->dev, ext_part_sector, 1, (ulong *) buffer) != 1) { | |
118 | printf ("** Can't read partition table on %d:%d **\n", | |
119 | dev_desc->dev, ext_part_sector); | |
120 | return; | |
121 | } | |
7205e407 | 122 | i=test_block_type(buffer); |
d1efb644 | 123 | if (i != DOS_MBR) { |
fe8c2806 WD |
124 | printf ("bad MBR sector signature 0x%02x%02x\n", |
125 | buffer[DOS_PART_MAGIC_OFFSET], | |
126 | buffer[DOS_PART_MAGIC_OFFSET + 1]); | |
127 | return; | |
128 | } | |
d1efb644 | 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)) ) { | |
304b5711 | 140 | print_one_part(pt, ext_part_sector, part_num); |
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)) { | |
154 | int lba_start = le32_to_int (pt->start4) + relative; | |
155 | ||
304b5711 SW |
156 | print_partition_extended(dev_desc, lba_start, |
157 | ext_part_sector == 0 ? lba_start : relative, | |
158 | part_num); | |
fe8c2806 WD |
159 | } |
160 | } | |
161 | ||
162 | return; | |
163 | } | |
164 | ||
165 | ||
166 | /* Print a partition that is relative to its Extended partition table | |
167 | */ | |
168 | static int get_partition_info_extended (block_dev_desc_t *dev_desc, int ext_part_sector, | |
169 | int relative, int part_num, | |
d27b5f93 SW |
170 | int which_part, disk_partition_t *info, |
171 | unsigned int disksig) | |
fe8c2806 | 172 | { |
dec049d9 | 173 | ALLOC_CACHE_ALIGN_BUFFER(unsigned char, buffer, dev_desc->blksz); |
fe8c2806 WD |
174 | dos_partition_t *pt; |
175 | int i; | |
176 | ||
177 | if (dev_desc->block_read (dev_desc->dev, ext_part_sector, 1, (ulong *) buffer) != 1) { | |
178 | printf ("** Can't read partition table on %d:%d **\n", | |
179 | dev_desc->dev, ext_part_sector); | |
180 | return -1; | |
181 | } | |
182 | if (buffer[DOS_PART_MAGIC_OFFSET] != 0x55 || | |
183 | buffer[DOS_PART_MAGIC_OFFSET + 1] != 0xaa) { | |
184 | printf ("bad MBR sector signature 0x%02x%02x\n", | |
185 | buffer[DOS_PART_MAGIC_OFFSET], | |
186 | buffer[DOS_PART_MAGIC_OFFSET + 1]); | |
187 | return -1; | |
188 | } | |
189 | ||
d27b5f93 SW |
190 | #ifdef CONFIG_PARTITION_UUIDS |
191 | if (!ext_part_sector) | |
192 | disksig = le32_to_int(&buffer[DOS_PART_DISKSIG_OFFSET]); | |
193 | #endif | |
194 | ||
fe8c2806 WD |
195 | /* Print all primary/logical partitions */ |
196 | pt = (dos_partition_t *) (buffer + DOS_PART_TBL_OFFSET); | |
197 | for (i = 0; i < 4; i++, pt++) { | |
198 | /* | |
8bde7f77 WD |
199 | * fdisk does not show the extended partitions that |
200 | * are not in the MBR | |
fe8c2806 | 201 | */ |
78f4ca79 DM |
202 | if (((pt->boot_ind & ~0x80) == 0) && |
203 | (pt->sys_ind != 0) && | |
7f70e853 WD |
204 | (part_num == which_part) && |
205 | (is_extended(pt->sys_ind) == 0)) { | |
fe8c2806 WD |
206 | info->blksz = 512; |
207 | info->start = ext_part_sector + le32_to_int (pt->start4); | |
208 | info->size = le32_to_int (pt->size4); | |
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 | } | |
260 | return -1; | |
261 | } | |
262 | ||
263 | void print_part_dos (block_dev_desc_t *dev_desc) | |
264 | { | |
304b5711 SW |
265 | printf("Partition Start Sector Num Sectors Type\n"); |
266 | print_partition_extended(dev_desc, 0, 0, 1); | |
fe8c2806 WD |
267 | } |
268 | ||
269 | int get_partition_info_dos (block_dev_desc_t *dev_desc, int part, disk_partition_t * info) | |
270 | { | |
d27b5f93 | 271 | return get_partition_info_extended(dev_desc, 0, 0, 1, part, info, 0); |
fe8c2806 WD |
272 | } |
273 | ||
274 | ||
cde5c64d | 275 | #endif |