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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) || \
unsik Kim75eb82e2009-02-25 11:31:24 +090039 defined(CONFIG_CMD_MG_DISK) || \
Mike Frysinger7bd27222009-01-29 20:02:07 -050040 defined(CONFIG_CMD_SATA) || \
41 defined(CONFIG_CMD_SCSI) || \
42 defined(CONFIG_CMD_USB) || \
43 defined(CONFIG_MMC) || \
44 defined(CONFIG_SYSTEMACE)
wdenkfe8c2802002-11-03 00:38:21 +000045
46/* Convert char[4] in little endian format to the host format integer
47 */
48static inline int le32_to_int(unsigned char *le32)
49{
50 return ((le32[3] << 24) +
51 (le32[2] << 16) +
52 (le32[1] << 8) +
53 le32[0]
54 );
55}
56
57static inline int is_extended(int part_type)
58{
59 return (part_type == 0x5 ||
60 part_type == 0xf ||
61 part_type == 0x85);
62}
63
64static void print_one_part (dos_partition_t *p, int ext_part_sector, int part_num)
65{
66 int lba_start = ext_part_sector + le32_to_int (p->start4);
67 int lba_size = le32_to_int (p->size4);
68
69 printf ("%5d\t\t%10d\t%10d\t%2x%s\n",
70 part_num, lba_start, lba_size, p->sys_ind,
71 (is_extended (p->sys_ind) ? " Extd" : ""));
72}
73
wdenk7205e402003-09-10 22:30:53 +000074static int test_block_type(unsigned char *buffer)
75{
76 if((buffer[DOS_PART_MAGIC_OFFSET + 0] != 0x55) ||
77 (buffer[DOS_PART_MAGIC_OFFSET + 1] != 0xaa) ) {
78 return (-1);
79 } /* no DOS Signature at all */
Wolfgang Denk77ddac92005-10-13 16:45:02 +020080 if(strncmp((char *)&buffer[DOS_PBR_FSTYPE_OFFSET],"FAT",3)==0)
wdenk7205e402003-09-10 22:30:53 +000081 return DOS_PBR; /* is PBR */
82 return DOS_MBR; /* Is MBR */
83}
84
wdenkfe8c2802002-11-03 00:38:21 +000085
wdenkfe8c2802002-11-03 00:38:21 +000086int test_part_dos (block_dev_desc_t *dev_desc)
87{
88 unsigned char buffer[DEFAULT_SECTOR_SIZE];
89
90 if ((dev_desc->block_read(dev_desc->dev, 0, 1, (ulong *) buffer) != 1) ||
91 (buffer[DOS_PART_MAGIC_OFFSET + 0] != 0x55) ||
92 (buffer[DOS_PART_MAGIC_OFFSET + 1] != 0xaa) ) {
wdenk8bde7f72003-06-27 21:31:46 +000093 return (-1);
wdenkfe8c2802002-11-03 00:38:21 +000094 }
95 return (0);
96}
97
98/* Print a partition that is relative to its Extended partition table
99 */
100static void print_partition_extended (block_dev_desc_t *dev_desc, int ext_part_sector, int relative,
101 int part_num)
102{
103 unsigned char buffer[DEFAULT_SECTOR_SIZE];
104 dos_partition_t *pt;
105 int i;
106
107 if (dev_desc->block_read(dev_desc->dev, ext_part_sector, 1, (ulong *) buffer) != 1) {
108 printf ("** Can't read partition table on %d:%d **\n",
109 dev_desc->dev, ext_part_sector);
110 return;
111 }
wdenk7205e402003-09-10 22:30:53 +0000112 i=test_block_type(buffer);
113 if(i==-1) {
wdenkfe8c2802002-11-03 00:38:21 +0000114 printf ("bad MBR sector signature 0x%02x%02x\n",
115 buffer[DOS_PART_MAGIC_OFFSET],
116 buffer[DOS_PART_MAGIC_OFFSET + 1]);
117 return;
118 }
wdenk7205e402003-09-10 22:30:53 +0000119 if(i==DOS_PBR) {
120 printf (" 1\t\t 0\t%10ld\t%2x\n",
121 dev_desc->lba, buffer[DOS_PBR_MEDIA_TYPE_OFFSET]);
122 return;
123 }
wdenkfe8c2802002-11-03 00:38:21 +0000124 /* Print all primary/logical partitions */
125 pt = (dos_partition_t *) (buffer + DOS_PART_TBL_OFFSET);
126 for (i = 0; i < 4; i++, pt++) {
127 /*
wdenk8bde7f72003-06-27 21:31:46 +0000128 * fdisk does not show the extended partitions that
wdenkfe8c2802002-11-03 00:38:21 +0000129 * are not in the MBR
130 */
131
132 if ((pt->sys_ind != 0) &&
133 (ext_part_sector == 0 || !is_extended (pt->sys_ind)) ) {
134 print_one_part (pt, ext_part_sector, part_num);
135 }
136
137 /* Reverse engr the fdisk part# assignment rule! */
138 if ((ext_part_sector == 0) ||
139 (pt->sys_ind != 0 && !is_extended (pt->sys_ind)) ) {
140 part_num++;
141 }
142 }
143
144 /* Follows the extended partitions */
145 pt = (dos_partition_t *) (buffer + DOS_PART_TBL_OFFSET);
146 for (i = 0; i < 4; i++, pt++) {
147 if (is_extended (pt->sys_ind)) {
148 int lba_start = le32_to_int (pt->start4) + relative;
149
150 print_partition_extended (dev_desc, lba_start,
151 ext_part_sector == 0 ? lba_start
152 : relative,
153 part_num);
154 }
155 }
156
157 return;
158}
159
160
161/* Print a partition that is relative to its Extended partition table
162 */
163static int get_partition_info_extended (block_dev_desc_t *dev_desc, int ext_part_sector,
164 int relative, int part_num,
165 int which_part, disk_partition_t *info)
166{
167 unsigned char buffer[DEFAULT_SECTOR_SIZE];
168 dos_partition_t *pt;
169 int i;
170
171 if (dev_desc->block_read (dev_desc->dev, ext_part_sector, 1, (ulong *) buffer) != 1) {
172 printf ("** Can't read partition table on %d:%d **\n",
173 dev_desc->dev, ext_part_sector);
174 return -1;
175 }
176 if (buffer[DOS_PART_MAGIC_OFFSET] != 0x55 ||
177 buffer[DOS_PART_MAGIC_OFFSET + 1] != 0xaa) {
178 printf ("bad MBR sector signature 0x%02x%02x\n",
179 buffer[DOS_PART_MAGIC_OFFSET],
180 buffer[DOS_PART_MAGIC_OFFSET + 1]);
181 return -1;
182 }
183
184 /* Print all primary/logical partitions */
185 pt = (dos_partition_t *) (buffer + DOS_PART_TBL_OFFSET);
186 for (i = 0; i < 4; i++, pt++) {
187 /*
wdenk8bde7f72003-06-27 21:31:46 +0000188 * fdisk does not show the extended partitions that
189 * are not in the MBR
wdenkfe8c2802002-11-03 00:38:21 +0000190 */
wdenk7f70e852003-05-20 14:25:27 +0000191 if ((pt->sys_ind != 0) &&
192 (part_num == which_part) &&
193 (is_extended(pt->sys_ind) == 0)) {
wdenkfe8c2802002-11-03 00:38:21 +0000194 info->blksz = 512;
195 info->start = ext_part_sector + le32_to_int (pt->start4);
196 info->size = le32_to_int (pt->size4);
197 switch(dev_desc->if_type) {
198 case IF_TYPE_IDE:
Dave Liuc7057b52008-03-26 22:49:44 +0800199 case IF_TYPE_SATA:
wdenkfe8c2802002-11-03 00:38:21 +0000200 case IF_TYPE_ATAPI:
Wolfgang Denk77ddac92005-10-13 16:45:02 +0200201 sprintf ((char *)info->name, "hd%c%d\n", 'a' + dev_desc->dev, part_num);
wdenkfe8c2802002-11-03 00:38:21 +0000202 break;
203 case IF_TYPE_SCSI:
Wolfgang Denk77ddac92005-10-13 16:45:02 +0200204 sprintf ((char *)info->name, "sd%c%d\n", 'a' + dev_desc->dev, part_num);
wdenkfe8c2802002-11-03 00:38:21 +0000205 break;
206 case IF_TYPE_USB:
Wolfgang Denk77ddac92005-10-13 16:45:02 +0200207 sprintf ((char *)info->name, "usbd%c%d\n", 'a' + dev_desc->dev, part_num);
wdenkfe8c2802002-11-03 00:38:21 +0000208 break;
209 case IF_TYPE_DOC:
Wolfgang Denk77ddac92005-10-13 16:45:02 +0200210 sprintf ((char *)info->name, "docd%c%d\n", 'a' + dev_desc->dev, part_num);
wdenkfe8c2802002-11-03 00:38:21 +0000211 break;
212 default:
Wolfgang Denk77ddac92005-10-13 16:45:02 +0200213 sprintf ((char *)info->name, "xx%c%d\n", 'a' + dev_desc->dev, part_num);
wdenkfe8c2802002-11-03 00:38:21 +0000214 break;
215 }
216 /* sprintf(info->type, "%d, pt->sys_ind); */
Wolfgang Denk77ddac92005-10-13 16:45:02 +0200217 sprintf ((char *)info->type, "U-Boot");
wdenkfe8c2802002-11-03 00:38:21 +0000218 return 0;
219 }
220
221 /* Reverse engr the fdisk part# assignment rule! */
222 if ((ext_part_sector == 0) ||
223 (pt->sys_ind != 0 && !is_extended (pt->sys_ind)) ) {
224 part_num++;
225 }
226 }
227
228 /* Follows the extended partitions */
229 pt = (dos_partition_t *) (buffer + DOS_PART_TBL_OFFSET);
230 for (i = 0; i < 4; i++, pt++) {
231 if (is_extended (pt->sys_ind)) {
232 int lba_start = le32_to_int (pt->start4) + relative;
233
234 return get_partition_info_extended (dev_desc, lba_start,
235 ext_part_sector == 0 ? lba_start : relative,
236 part_num, which_part, info);
237 }
238 }
239 return -1;
240}
241
242void print_part_dos (block_dev_desc_t *dev_desc)
243{
244 printf ("Partition Start Sector Num Sectors Type\n");
245 print_partition_extended (dev_desc, 0, 0, 1);
246}
247
248int get_partition_info_dos (block_dev_desc_t *dev_desc, int part, disk_partition_t * info)
249{
250 return get_partition_info_extended (dev_desc, 0, 0, 1, part, info);
251}
252
253
Jon Loeligercde5c642007-07-09 17:22:37 -0500254#endif