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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
Mike Frysinger7bd27222009-01-29 20:02:07 -050038#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)
wdenkfe8c2802002-11-03 00:38:21 +000044
45/* Convert char[4] in little endian format to the host format integer
46 */
47static 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
56static inline int is_extended(int part_type)
57{
58 return (part_type == 0x5 ||
59 part_type == 0xf ||
60 part_type == 0x85);
61}
62
Rob Herring40e0e562012-08-23 11:31:43 +000063static inline int is_bootable(dos_partition_t *p)
64{
65 return p->boot_ind == 0x80;
66}
67
wdenkfe8c2802002-11-03 00:38:21 +000068static void print_one_part (dos_partition_t *p, int ext_part_sector, int part_num)
69{
70 int lba_start = ext_part_sector + le32_to_int (p->start4);
71 int lba_size = le32_to_int (p->size4);
72
Rob Herring40e0e562012-08-23 11:31:43 +000073 printf("%5d\t\t%10d\t%10d\t%2x%s%s\n",
wdenkfe8c2802002-11-03 00:38:21 +000074 part_num, lba_start, lba_size, p->sys_ind,
Rob Herring40e0e562012-08-23 11:31:43 +000075 (is_extended(p->sys_ind) ? " Extd" : ""),
76 (is_bootable(p) ? " Boot" : ""));
wdenkfe8c2802002-11-03 00:38:21 +000077}
78
wdenk7205e402003-09-10 22:30:53 +000079static int test_block_type(unsigned char *buffer)
80{
81 if((buffer[DOS_PART_MAGIC_OFFSET + 0] != 0x55) ||
82 (buffer[DOS_PART_MAGIC_OFFSET + 1] != 0xaa) ) {
83 return (-1);
84 } /* no DOS Signature at all */
Wolfgang Denk66c2d732010-07-19 11:36:57 +020085 if (strncmp((char *)&buffer[DOS_PBR_FSTYPE_OFFSET],"FAT",3)==0 ||
86 strncmp((char *)&buffer[DOS_PBR32_FSTYPE_OFFSET],"FAT32",5)==0) {
wdenk7205e402003-09-10 22:30:53 +000087 return DOS_PBR; /* is PBR */
Wolfgang Denk66c2d732010-07-19 11:36:57 +020088 }
wdenk7205e402003-09-10 22:30:53 +000089 return DOS_MBR; /* Is MBR */
90}
91
wdenkfe8c2802002-11-03 00:38:21 +000092
wdenkfe8c2802002-11-03 00:38:21 +000093int test_part_dos (block_dev_desc_t *dev_desc)
94{
Eric Nelsondec049d2012-03-03 12:02:20 +000095 ALLOC_CACHE_ALIGN_BUFFER(unsigned char, buffer, dev_desc->blksz);
wdenkfe8c2802002-11-03 00:38:21 +000096
Stephen Warrend1efb642012-10-05 13:17:40 +000097 if (dev_desc->block_read(dev_desc->dev, 0, 1, (ulong *) buffer) != 1)
98 return -1;
99
100 if (test_block_type(buffer) != DOS_MBR)
101 return -1;
102
103 return 0;
wdenkfe8c2802002-11-03 00:38:21 +0000104}
105
106/* Print a partition that is relative to its Extended partition table
107 */
108static void print_partition_extended (block_dev_desc_t *dev_desc, int ext_part_sector, int relative,
109 int part_num)
110{
Eric Nelsondec049d2012-03-03 12:02:20 +0000111 ALLOC_CACHE_ALIGN_BUFFER(unsigned char, buffer, dev_desc->blksz);
wdenkfe8c2802002-11-03 00:38:21 +0000112 dos_partition_t *pt;
113 int i;
114
115 if (dev_desc->block_read(dev_desc->dev, ext_part_sector, 1, (ulong *) buffer) != 1) {
116 printf ("** Can't read partition table on %d:%d **\n",
117 dev_desc->dev, ext_part_sector);
118 return;
119 }
wdenk7205e402003-09-10 22:30:53 +0000120 i=test_block_type(buffer);
Stephen Warrend1efb642012-10-05 13:17:40 +0000121 if (i != DOS_MBR) {
wdenkfe8c2802002-11-03 00:38:21 +0000122 printf ("bad MBR sector signature 0x%02x%02x\n",
123 buffer[DOS_PART_MAGIC_OFFSET],
124 buffer[DOS_PART_MAGIC_OFFSET + 1]);
125 return;
126 }
Stephen Warrend1efb642012-10-05 13:17:40 +0000127
wdenkfe8c2802002-11-03 00:38:21 +0000128 /* Print all primary/logical partitions */
129 pt = (dos_partition_t *) (buffer + DOS_PART_TBL_OFFSET);
130 for (i = 0; i < 4; i++, pt++) {
131 /*
wdenk8bde7f72003-06-27 21:31:46 +0000132 * fdisk does not show the extended partitions that
wdenkfe8c2802002-11-03 00:38:21 +0000133 * are not in the MBR
134 */
135
136 if ((pt->sys_ind != 0) &&
137 (ext_part_sector == 0 || !is_extended (pt->sys_ind)) ) {
138 print_one_part (pt, ext_part_sector, part_num);
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
154 print_partition_extended (dev_desc, lba_start,
155 ext_part_sector == 0 ? lba_start
156 : relative,
157 part_num);
158 }
159 }
160
161 return;
162}
163
164
165/* Print a partition that is relative to its Extended partition table
166 */
167static int get_partition_info_extended (block_dev_desc_t *dev_desc, int ext_part_sector,
168 int relative, int part_num,
Stephen Warrend27b5f92012-09-21 09:51:00 +0000169 int which_part, disk_partition_t *info,
170 unsigned int disksig)
wdenkfe8c2802002-11-03 00:38:21 +0000171{
Eric Nelsondec049d2012-03-03 12:02:20 +0000172 ALLOC_CACHE_ALIGN_BUFFER(unsigned char, buffer, dev_desc->blksz);
wdenkfe8c2802002-11-03 00:38:21 +0000173 dos_partition_t *pt;
174 int i;
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
Stephen Warrend27b5f92012-09-21 09:51:00 +0000189#ifdef CONFIG_PARTITION_UUIDS
190 if (!ext_part_sector)
191 disksig = le32_to_int(&buffer[DOS_PART_DISKSIG_OFFSET]);
192#endif
193
wdenkfe8c2802002-11-03 00:38:21 +0000194 /* Print all primary/logical partitions */
195 pt = (dos_partition_t *) (buffer + DOS_PART_TBL_OFFSET);
196 for (i = 0; i < 4; i++, pt++) {
197 /*
wdenk8bde7f72003-06-27 21:31:46 +0000198 * fdisk does not show the extended partitions that
199 * are not in the MBR
wdenkfe8c2802002-11-03 00:38:21 +0000200 */
Daniel Mack78f4ca72009-09-28 11:40:38 +0200201 if (((pt->boot_ind & ~0x80) == 0) &&
202 (pt->sys_ind != 0) &&
wdenk7f70e852003-05-20 14:25:27 +0000203 (part_num == which_part) &&
204 (is_extended(pt->sys_ind) == 0)) {
wdenkfe8c2802002-11-03 00:38:21 +0000205 info->blksz = 512;
206 info->start = ext_part_sector + le32_to_int (pt->start4);
207 info->size = le32_to_int (pt->size4);
208 switch(dev_desc->if_type) {
209 case IF_TYPE_IDE:
Dave Liuc7057b52008-03-26 22:49:44 +0800210 case IF_TYPE_SATA:
wdenkfe8c2802002-11-03 00:38:21 +0000211 case IF_TYPE_ATAPI:
Wolfgang Denk71665522009-07-28 22:35:39 +0200212 sprintf ((char *)info->name, "hd%c%d",
213 'a' + dev_desc->dev, part_num);
wdenkfe8c2802002-11-03 00:38:21 +0000214 break;
215 case IF_TYPE_SCSI:
Wolfgang Denk71665522009-07-28 22:35:39 +0200216 sprintf ((char *)info->name, "sd%c%d",
217 'a' + dev_desc->dev, part_num);
wdenkfe8c2802002-11-03 00:38:21 +0000218 break;
219 case IF_TYPE_USB:
Wolfgang Denk71665522009-07-28 22:35:39 +0200220 sprintf ((char *)info->name, "usbd%c%d",
221 'a' + dev_desc->dev, part_num);
wdenkfe8c2802002-11-03 00:38:21 +0000222 break;
223 case IF_TYPE_DOC:
Wolfgang Denk71665522009-07-28 22:35:39 +0200224 sprintf ((char *)info->name, "docd%c%d",
225 'a' + dev_desc->dev, part_num);
wdenkfe8c2802002-11-03 00:38:21 +0000226 break;
227 default:
Wolfgang Denk71665522009-07-28 22:35:39 +0200228 sprintf ((char *)info->name, "xx%c%d",
229 'a' + dev_desc->dev, part_num);
wdenkfe8c2802002-11-03 00:38:21 +0000230 break;
231 }
232 /* sprintf(info->type, "%d, pt->sys_ind); */
Wolfgang Denk77ddac92005-10-13 16:45:02 +0200233 sprintf ((char *)info->type, "U-Boot");
Rob Herring40e0e562012-08-23 11:31:43 +0000234 info->bootable = is_bootable(pt);
Stephen Warrend27b5f92012-09-21 09:51:00 +0000235#ifdef CONFIG_PARTITION_UUIDS
236 sprintf(info->uuid, "%08x-%02x", disksig, part_num);
237#endif
wdenkfe8c2802002-11-03 00:38:21 +0000238 return 0;
239 }
240
241 /* Reverse engr the fdisk part# assignment rule! */
242 if ((ext_part_sector == 0) ||
243 (pt->sys_ind != 0 && !is_extended (pt->sys_ind)) ) {
244 part_num++;
245 }
246 }
247
248 /* Follows the extended partitions */
249 pt = (dos_partition_t *) (buffer + DOS_PART_TBL_OFFSET);
250 for (i = 0; i < 4; i++, pt++) {
251 if (is_extended (pt->sys_ind)) {
252 int lba_start = le32_to_int (pt->start4) + relative;
253
254 return get_partition_info_extended (dev_desc, lba_start,
255 ext_part_sector == 0 ? lba_start : relative,
Stephen Warrend27b5f92012-09-21 09:51:00 +0000256 part_num, which_part, info, disksig);
wdenkfe8c2802002-11-03 00:38:21 +0000257 }
258 }
259 return -1;
260}
261
262void print_part_dos (block_dev_desc_t *dev_desc)
263{
264 printf ("Partition Start Sector Num Sectors Type\n");
265 print_partition_extended (dev_desc, 0, 0, 1);
266}
267
268int get_partition_info_dos (block_dev_desc_t *dev_desc, int part, disk_partition_t * info)
269{
Stephen Warrend27b5f92012-09-21 09:51:00 +0000270 return get_partition_info_extended(dev_desc, 0, 0, 1, part, info, 0);
wdenkfe8c2802002-11-03 00:38:21 +0000271}
272
273
Jon Loeligercde5c642007-07-09 17:22:37 -0500274#endif