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wdenkfe8c2802002-11-03 00:38:21 +00001/*
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>
wdenkfe8c2802002-11-03 00:38:21 +000036#include "part_dos.h"
37
Stephen Warren2c1af9d2013-02-28 15:03:46 +000038#ifdef HAVE_BLOCK_DEVICE
wdenkfe8c2802002-11-03 00:38:21 +000039
40/* Convert char[4] in little endian format to the host format integer
41 */
42static inline int le32_to_int(unsigned char *le32)
43{
44 return ((le32[3] << 24) +
45 (le32[2] << 16) +
46 (le32[1] << 8) +
47 le32[0]
48 );
49}
50
51static inline int is_extended(int part_type)
52{
53 return (part_type == 0x5 ||
54 part_type == 0xf ||
55 part_type == 0x85);
56}
57
Rob Herring40e0e562012-08-23 11:31:43 +000058static inline int is_bootable(dos_partition_t *p)
59{
60 return p->boot_ind == 0x80;
61}
62
Stephen Warren304b5712012-10-08 08:14:38 +000063static void print_one_part(dos_partition_t *p, int ext_part_sector,
Stephen Warrene2e9b372012-10-08 08:14:40 +000064 int part_num, unsigned int disksig)
wdenkfe8c2802002-11-03 00:38:21 +000065{
66 int lba_start = ext_part_sector + le32_to_int (p->start4);
67 int lba_size = le32_to_int (p->size4);
68
Stephen Warrene2e9b372012-10-08 08:14:40 +000069 printf("%3d\t%-10d\t%-10d\t%08x-%02x\t%02x%s%s\n",
70 part_num, lba_start, lba_size, disksig, part_num, p->sys_ind,
Rob Herring40e0e562012-08-23 11:31:43 +000071 (is_extended(p->sys_ind) ? " Extd" : ""),
72 (is_bootable(p) ? " Boot" : ""));
wdenkfe8c2802002-11-03 00:38:21 +000073}
74
wdenk7205e402003-09-10 22:30:53 +000075static int test_block_type(unsigned char *buffer)
76{
Egbert Eich9d956e02013-04-09 05:46:14 +000077 int slot;
78 struct dos_partition *p;
79
wdenk7205e402003-09-10 22:30:53 +000080 if((buffer[DOS_PART_MAGIC_OFFSET + 0] != 0x55) ||
81 (buffer[DOS_PART_MAGIC_OFFSET + 1] != 0xaa) ) {
82 return (-1);
83 } /* no DOS Signature at all */
Egbert Eich9d956e02013-04-09 05:46:14 +000084 p = (struct dos_partition *)&buffer[DOS_PART_TBL_OFFSET];
85 for (slot = 0; slot < 3; slot++) {
86 if (p->boot_ind != 0 && p->boot_ind != 0x80) {
87 if (!slot &&
88 (strncmp((char *)&buffer[DOS_PBR_FSTYPE_OFFSET],
89 "FAT", 3) == 0 ||
90 strncmp((char *)&buffer[DOS_PBR32_FSTYPE_OFFSET],
91 "FAT32", 5) == 0)) {
92 return DOS_PBR; /* is PBR */
93 } else {
94 return -1;
95 }
96 }
Wolfgang Denk66c2d732010-07-19 11:36:57 +020097 }
wdenk7205e402003-09-10 22:30:53 +000098 return DOS_MBR; /* Is MBR */
99}
100
wdenkfe8c2802002-11-03 00:38:21 +0000101
wdenkfe8c2802002-11-03 00:38:21 +0000102int test_part_dos (block_dev_desc_t *dev_desc)
103{
Eric Nelsondec049d2012-03-03 12:02:20 +0000104 ALLOC_CACHE_ALIGN_BUFFER(unsigned char, buffer, dev_desc->blksz);
wdenkfe8c2802002-11-03 00:38:21 +0000105
Stephen Warrend1efb642012-10-05 13:17:40 +0000106 if (dev_desc->block_read(dev_desc->dev, 0, 1, (ulong *) buffer) != 1)
107 return -1;
108
109 if (test_block_type(buffer) != DOS_MBR)
110 return -1;
111
112 return 0;
wdenkfe8c2802002-11-03 00:38:21 +0000113}
114
115/* Print a partition that is relative to its Extended partition table
116 */
Stephen Warren304b5712012-10-08 08:14:38 +0000117static void print_partition_extended(block_dev_desc_t *dev_desc,
118 int ext_part_sector, int relative,
Stephen Warrene2e9b372012-10-08 08:14:40 +0000119 int part_num, unsigned int disksig)
wdenkfe8c2802002-11-03 00:38:21 +0000120{
Eric Nelsondec049d2012-03-03 12:02:20 +0000121 ALLOC_CACHE_ALIGN_BUFFER(unsigned char, buffer, dev_desc->blksz);
wdenkfe8c2802002-11-03 00:38:21 +0000122 dos_partition_t *pt;
123 int i;
124
125 if (dev_desc->block_read(dev_desc->dev, ext_part_sector, 1, (ulong *) buffer) != 1) {
126 printf ("** Can't read partition table on %d:%d **\n",
127 dev_desc->dev, ext_part_sector);
128 return;
129 }
wdenk7205e402003-09-10 22:30:53 +0000130 i=test_block_type(buffer);
Stephen Warrend1efb642012-10-05 13:17:40 +0000131 if (i != DOS_MBR) {
wdenkfe8c2802002-11-03 00:38:21 +0000132 printf ("bad MBR sector signature 0x%02x%02x\n",
133 buffer[DOS_PART_MAGIC_OFFSET],
134 buffer[DOS_PART_MAGIC_OFFSET + 1]);
135 return;
136 }
Stephen Warrend1efb642012-10-05 13:17:40 +0000137
Stephen Warrene2e9b372012-10-08 08:14:40 +0000138 if (!ext_part_sector)
139 disksig = le32_to_int(&buffer[DOS_PART_DISKSIG_OFFSET]);
140
wdenkfe8c2802002-11-03 00:38:21 +0000141 /* Print all primary/logical partitions */
142 pt = (dos_partition_t *) (buffer + DOS_PART_TBL_OFFSET);
143 for (i = 0; i < 4; i++, pt++) {
144 /*
wdenk8bde7f72003-06-27 21:31:46 +0000145 * fdisk does not show the extended partitions that
wdenkfe8c2802002-11-03 00:38:21 +0000146 * are not in the MBR
147 */
148
149 if ((pt->sys_ind != 0) &&
150 (ext_part_sector == 0 || !is_extended (pt->sys_ind)) ) {
Stephen Warrene2e9b372012-10-08 08:14:40 +0000151 print_one_part(pt, ext_part_sector, part_num, disksig);
wdenkfe8c2802002-11-03 00:38:21 +0000152 }
153
154 /* Reverse engr the fdisk part# assignment rule! */
155 if ((ext_part_sector == 0) ||
156 (pt->sys_ind != 0 && !is_extended (pt->sys_ind)) ) {
157 part_num++;
158 }
159 }
160
161 /* Follows the extended partitions */
162 pt = (dos_partition_t *) (buffer + DOS_PART_TBL_OFFSET);
163 for (i = 0; i < 4; i++, pt++) {
164 if (is_extended (pt->sys_ind)) {
165 int lba_start = le32_to_int (pt->start4) + relative;
166
Stephen Warren304b5712012-10-08 08:14:38 +0000167 print_partition_extended(dev_desc, lba_start,
168 ext_part_sector == 0 ? lba_start : relative,
Stephen Warrene2e9b372012-10-08 08:14:40 +0000169 part_num, disksig);
wdenkfe8c2802002-11-03 00:38:21 +0000170 }
171 }
172
173 return;
174}
175
176
177/* Print a partition that is relative to its Extended partition table
178 */
179static int get_partition_info_extended (block_dev_desc_t *dev_desc, int ext_part_sector,
180 int relative, int part_num,
Stephen Warrend27b5f92012-09-21 09:51:00 +0000181 int which_part, disk_partition_t *info,
182 unsigned int disksig)
wdenkfe8c2802002-11-03 00:38:21 +0000183{
Eric Nelsondec049d2012-03-03 12:02:20 +0000184 ALLOC_CACHE_ALIGN_BUFFER(unsigned char, buffer, dev_desc->blksz);
wdenkfe8c2802002-11-03 00:38:21 +0000185 dos_partition_t *pt;
186 int i;
187
188 if (dev_desc->block_read (dev_desc->dev, ext_part_sector, 1, (ulong *) buffer) != 1) {
189 printf ("** Can't read partition table on %d:%d **\n",
190 dev_desc->dev, ext_part_sector);
191 return -1;
192 }
193 if (buffer[DOS_PART_MAGIC_OFFSET] != 0x55 ||
194 buffer[DOS_PART_MAGIC_OFFSET + 1] != 0xaa) {
195 printf ("bad MBR sector signature 0x%02x%02x\n",
196 buffer[DOS_PART_MAGIC_OFFSET],
197 buffer[DOS_PART_MAGIC_OFFSET + 1]);
198 return -1;
199 }
200
Stephen Warrend27b5f92012-09-21 09:51:00 +0000201#ifdef CONFIG_PARTITION_UUIDS
202 if (!ext_part_sector)
203 disksig = le32_to_int(&buffer[DOS_PART_DISKSIG_OFFSET]);
204#endif
205
wdenkfe8c2802002-11-03 00:38:21 +0000206 /* Print all primary/logical partitions */
207 pt = (dos_partition_t *) (buffer + DOS_PART_TBL_OFFSET);
208 for (i = 0; i < 4; i++, pt++) {
209 /*
wdenk8bde7f72003-06-27 21:31:46 +0000210 * fdisk does not show the extended partitions that
211 * are not in the MBR
wdenkfe8c2802002-11-03 00:38:21 +0000212 */
Daniel Mack78f4ca72009-09-28 11:40:38 +0200213 if (((pt->boot_ind & ~0x80) == 0) &&
214 (pt->sys_ind != 0) &&
wdenk7f70e852003-05-20 14:25:27 +0000215 (part_num == which_part) &&
216 (is_extended(pt->sys_ind) == 0)) {
wdenkfe8c2802002-11-03 00:38:21 +0000217 info->blksz = 512;
218 info->start = ext_part_sector + le32_to_int (pt->start4);
219 info->size = le32_to_int (pt->size4);
220 switch(dev_desc->if_type) {
221 case IF_TYPE_IDE:
Dave Liuc7057b52008-03-26 22:49:44 +0800222 case IF_TYPE_SATA:
wdenkfe8c2802002-11-03 00:38:21 +0000223 case IF_TYPE_ATAPI:
Wolfgang Denk71665522009-07-28 22:35:39 +0200224 sprintf ((char *)info->name, "hd%c%d",
225 'a' + dev_desc->dev, part_num);
wdenkfe8c2802002-11-03 00:38:21 +0000226 break;
227 case IF_TYPE_SCSI:
Wolfgang Denk71665522009-07-28 22:35:39 +0200228 sprintf ((char *)info->name, "sd%c%d",
229 'a' + dev_desc->dev, part_num);
wdenkfe8c2802002-11-03 00:38:21 +0000230 break;
231 case IF_TYPE_USB:
Wolfgang Denk71665522009-07-28 22:35:39 +0200232 sprintf ((char *)info->name, "usbd%c%d",
233 'a' + dev_desc->dev, part_num);
wdenkfe8c2802002-11-03 00:38:21 +0000234 break;
235 case IF_TYPE_DOC:
Wolfgang Denk71665522009-07-28 22:35:39 +0200236 sprintf ((char *)info->name, "docd%c%d",
237 'a' + dev_desc->dev, part_num);
wdenkfe8c2802002-11-03 00:38:21 +0000238 break;
239 default:
Wolfgang Denk71665522009-07-28 22:35:39 +0200240 sprintf ((char *)info->name, "xx%c%d",
241 'a' + dev_desc->dev, part_num);
wdenkfe8c2802002-11-03 00:38:21 +0000242 break;
243 }
244 /* sprintf(info->type, "%d, pt->sys_ind); */
Wolfgang Denk77ddac92005-10-13 16:45:02 +0200245 sprintf ((char *)info->type, "U-Boot");
Rob Herring40e0e562012-08-23 11:31:43 +0000246 info->bootable = is_bootable(pt);
Stephen Warrend27b5f92012-09-21 09:51:00 +0000247#ifdef CONFIG_PARTITION_UUIDS
248 sprintf(info->uuid, "%08x-%02x", disksig, part_num);
249#endif
wdenkfe8c2802002-11-03 00:38:21 +0000250 return 0;
251 }
252
253 /* Reverse engr the fdisk part# assignment rule! */
254 if ((ext_part_sector == 0) ||
255 (pt->sys_ind != 0 && !is_extended (pt->sys_ind)) ) {
256 part_num++;
257 }
258 }
259
260 /* Follows the extended partitions */
261 pt = (dos_partition_t *) (buffer + DOS_PART_TBL_OFFSET);
262 for (i = 0; i < 4; i++, pt++) {
263 if (is_extended (pt->sys_ind)) {
264 int lba_start = le32_to_int (pt->start4) + relative;
265
266 return get_partition_info_extended (dev_desc, lba_start,
267 ext_part_sector == 0 ? lba_start : relative,
Stephen Warrend27b5f92012-09-21 09:51:00 +0000268 part_num, which_part, info, disksig);
wdenkfe8c2802002-11-03 00:38:21 +0000269 }
270 }
271 return -1;
272}
273
274void print_part_dos (block_dev_desc_t *dev_desc)
275{
Stephen Warrene2e9b372012-10-08 08:14:40 +0000276 printf("Part\tStart Sector\tNum Sectors\tUUID\t\tType\n");
277 print_partition_extended(dev_desc, 0, 0, 1, 0);
wdenkfe8c2802002-11-03 00:38:21 +0000278}
279
280int get_partition_info_dos (block_dev_desc_t *dev_desc, int part, disk_partition_t * info)
281{
Stephen Warrend27b5f92012-09-21 09:51:00 +0000282 return get_partition_info_extended(dev_desc, 0, 0, 1, part, info, 0);
wdenkfe8c2802002-11-03 00:38:21 +0000283}
284
285
Jon Loeligercde5c642007-07-09 17:22:37 -0500286#endif