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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
wdenk149dded2003-09-10 18:20:28 +000038#if ((CONFIG_COMMANDS & CFG_CMD_IDE) || \
39 (CONFIG_COMMANDS & CFG_CMD_SCSI) || \
wdenk3f85ce22004-02-23 16:11:30 +000040 (CONFIG_COMMANDS & CFG_CMD_USB) || \
wdenk1968e612005-02-24 23:23:29 +000041 defined(CONFIG_MMC) || \
42 defined(CONFIG_SYSTEMACE) ) && defined(CONFIG_DOS_PARTITION)
wdenkfe8c2802002-11-03 00:38:21 +000043
44/* Convert char[4] in little endian format to the host format integer
45 */
46static inline int le32_to_int(unsigned char *le32)
47{
48 return ((le32[3] << 24) +
49 (le32[2] << 16) +
50 (le32[1] << 8) +
51 le32[0]
52 );
53}
54
55static inline int is_extended(int part_type)
56{
57 return (part_type == 0x5 ||
58 part_type == 0xf ||
59 part_type == 0x85);
60}
61
62static void print_one_part (dos_partition_t *p, int ext_part_sector, int part_num)
63{
64 int lba_start = ext_part_sector + le32_to_int (p->start4);
65 int lba_size = le32_to_int (p->size4);
66
67 printf ("%5d\t\t%10d\t%10d\t%2x%s\n",
68 part_num, lba_start, lba_size, p->sys_ind,
69 (is_extended (p->sys_ind) ? " Extd" : ""));
70}
71
wdenk7205e402003-09-10 22:30:53 +000072static int test_block_type(unsigned char *buffer)
73{
74 if((buffer[DOS_PART_MAGIC_OFFSET + 0] != 0x55) ||
75 (buffer[DOS_PART_MAGIC_OFFSET + 1] != 0xaa) ) {
76 return (-1);
77 } /* no DOS Signature at all */
78 if(strncmp(&buffer[DOS_PBR_FSTYPE_OFFSET],"FAT",3)==0)
79 return DOS_PBR; /* is PBR */
80 return DOS_MBR; /* Is MBR */
81}
82
wdenkfe8c2802002-11-03 00:38:21 +000083
wdenkfe8c2802002-11-03 00:38:21 +000084int test_part_dos (block_dev_desc_t *dev_desc)
85{
86 unsigned char buffer[DEFAULT_SECTOR_SIZE];
87
88 if ((dev_desc->block_read(dev_desc->dev, 0, 1, (ulong *) buffer) != 1) ||
89 (buffer[DOS_PART_MAGIC_OFFSET + 0] != 0x55) ||
90 (buffer[DOS_PART_MAGIC_OFFSET + 1] != 0xaa) ) {
wdenk8bde7f72003-06-27 21:31:46 +000091 return (-1);
wdenkfe8c2802002-11-03 00:38:21 +000092 }
93 return (0);
94}
95
96/* Print a partition that is relative to its Extended partition table
97 */
98static void print_partition_extended (block_dev_desc_t *dev_desc, int ext_part_sector, int relative,
99 int part_num)
100{
101 unsigned char buffer[DEFAULT_SECTOR_SIZE];
102 dos_partition_t *pt;
103 int i;
104
105 if (dev_desc->block_read(dev_desc->dev, ext_part_sector, 1, (ulong *) buffer) != 1) {
106 printf ("** Can't read partition table on %d:%d **\n",
107 dev_desc->dev, ext_part_sector);
108 return;
109 }
wdenk7205e402003-09-10 22:30:53 +0000110 i=test_block_type(buffer);
111 if(i==-1) {
wdenkfe8c2802002-11-03 00:38:21 +0000112 printf ("bad MBR sector signature 0x%02x%02x\n",
113 buffer[DOS_PART_MAGIC_OFFSET],
114 buffer[DOS_PART_MAGIC_OFFSET + 1]);
115 return;
116 }
wdenk7205e402003-09-10 22:30:53 +0000117 if(i==DOS_PBR) {
118 printf (" 1\t\t 0\t%10ld\t%2x\n",
119 dev_desc->lba, buffer[DOS_PBR_MEDIA_TYPE_OFFSET]);
120 return;
121 }
wdenkfe8c2802002-11-03 00:38:21 +0000122 /* Print all primary/logical partitions */
123 pt = (dos_partition_t *) (buffer + DOS_PART_TBL_OFFSET);
124 for (i = 0; i < 4; i++, pt++) {
125 /*
wdenk8bde7f72003-06-27 21:31:46 +0000126 * fdisk does not show the extended partitions that
wdenkfe8c2802002-11-03 00:38:21 +0000127 * are not in the MBR
128 */
129
130 if ((pt->sys_ind != 0) &&
131 (ext_part_sector == 0 || !is_extended (pt->sys_ind)) ) {
132 print_one_part (pt, ext_part_sector, part_num);
133 }
134
135 /* Reverse engr the fdisk part# assignment rule! */
136 if ((ext_part_sector == 0) ||
137 (pt->sys_ind != 0 && !is_extended (pt->sys_ind)) ) {
138 part_num++;
139 }
140 }
141
142 /* Follows the extended partitions */
143 pt = (dos_partition_t *) (buffer + DOS_PART_TBL_OFFSET);
144 for (i = 0; i < 4; i++, pt++) {
145 if (is_extended (pt->sys_ind)) {
146 int lba_start = le32_to_int (pt->start4) + relative;
147
148 print_partition_extended (dev_desc, lba_start,
149 ext_part_sector == 0 ? lba_start
150 : relative,
151 part_num);
152 }
153 }
154
155 return;
156}
157
158
159/* Print a partition that is relative to its Extended partition table
160 */
161static int get_partition_info_extended (block_dev_desc_t *dev_desc, int ext_part_sector,
162 int relative, int part_num,
163 int which_part, disk_partition_t *info)
164{
165 unsigned char buffer[DEFAULT_SECTOR_SIZE];
166 dos_partition_t *pt;
167 int i;
168
169 if (dev_desc->block_read (dev_desc->dev, ext_part_sector, 1, (ulong *) buffer) != 1) {
170 printf ("** Can't read partition table on %d:%d **\n",
171 dev_desc->dev, ext_part_sector);
172 return -1;
173 }
174 if (buffer[DOS_PART_MAGIC_OFFSET] != 0x55 ||
175 buffer[DOS_PART_MAGIC_OFFSET + 1] != 0xaa) {
176 printf ("bad MBR sector signature 0x%02x%02x\n",
177 buffer[DOS_PART_MAGIC_OFFSET],
178 buffer[DOS_PART_MAGIC_OFFSET + 1]);
179 return -1;
180 }
181
182 /* Print all primary/logical partitions */
183 pt = (dos_partition_t *) (buffer + DOS_PART_TBL_OFFSET);
184 for (i = 0; i < 4; i++, pt++) {
185 /*
wdenk8bde7f72003-06-27 21:31:46 +0000186 * fdisk does not show the extended partitions that
187 * are not in the MBR
wdenkfe8c2802002-11-03 00:38:21 +0000188 */
wdenk7f70e852003-05-20 14:25:27 +0000189 if ((pt->sys_ind != 0) &&
190 (part_num == which_part) &&
191 (is_extended(pt->sys_ind) == 0)) {
wdenkfe8c2802002-11-03 00:38:21 +0000192 info->blksz = 512;
193 info->start = ext_part_sector + le32_to_int (pt->start4);
194 info->size = le32_to_int (pt->size4);
195 switch(dev_desc->if_type) {
196 case IF_TYPE_IDE:
197 case IF_TYPE_ATAPI:
198 sprintf (info->name, "hd%c%d\n", 'a' + dev_desc->dev, part_num);
199 break;
200 case IF_TYPE_SCSI:
201 sprintf (info->name, "sd%c%d\n", 'a' + dev_desc->dev, part_num);
202 break;
203 case IF_TYPE_USB:
204 sprintf (info->name, "usbd%c%d\n", 'a' + dev_desc->dev, part_num);
205 break;
206 case IF_TYPE_DOC:
207 sprintf (info->name, "docd%c%d\n", 'a' + dev_desc->dev, part_num);
208 break;
209 default:
210 sprintf (info->name, "xx%c%d\n", 'a' + dev_desc->dev, part_num);
211 break;
212 }
213 /* sprintf(info->type, "%d, pt->sys_ind); */
214 sprintf (info->type, "U-Boot");
215 return 0;
216 }
217
218 /* Reverse engr the fdisk part# assignment rule! */
219 if ((ext_part_sector == 0) ||
220 (pt->sys_ind != 0 && !is_extended (pt->sys_ind)) ) {
221 part_num++;
222 }
223 }
224
225 /* Follows the extended partitions */
226 pt = (dos_partition_t *) (buffer + DOS_PART_TBL_OFFSET);
227 for (i = 0; i < 4; i++, pt++) {
228 if (is_extended (pt->sys_ind)) {
229 int lba_start = le32_to_int (pt->start4) + relative;
230
231 return get_partition_info_extended (dev_desc, lba_start,
232 ext_part_sector == 0 ? lba_start : relative,
233 part_num, which_part, info);
234 }
235 }
236 return -1;
237}
238
239void print_part_dos (block_dev_desc_t *dev_desc)
240{
241 printf ("Partition Start Sector Num Sectors Type\n");
242 print_partition_extended (dev_desc, 0, 0, 1);
243}
244
245int get_partition_info_dos (block_dev_desc_t *dev_desc, int part, disk_partition_t * info)
246{
247 return get_partition_info_extended (dev_desc, 0, 0, 1, part, info);
248}
249
250
wdenkfe8c2802002-11-03 00:38:21 +0000251#endif /* (CONFIG_COMMANDS & CFG_CMD_IDE) && CONFIG_DOS_PARTITION */