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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 Denk66c2d732010-07-19 11:36:57 +020080 if (strncmp((char *)&buffer[DOS_PBR_FSTYPE_OFFSET],"FAT",3)==0 ||
81 strncmp((char *)&buffer[DOS_PBR32_FSTYPE_OFFSET],"FAT32",5)==0) {
wdenk7205e402003-09-10 22:30:53 +000082 return DOS_PBR; /* is PBR */
Wolfgang Denk66c2d732010-07-19 11:36:57 +020083 }
wdenk7205e402003-09-10 22:30:53 +000084 return DOS_MBR; /* Is MBR */
85}
86
wdenkfe8c2802002-11-03 00:38:21 +000087
wdenkfe8c2802002-11-03 00:38:21 +000088int test_part_dos (block_dev_desc_t *dev_desc)
89{
Sergei Shtylyov54193c5d2011-06-03 09:37:43 +000090 unsigned char buffer[dev_desc->blksz];
wdenkfe8c2802002-11-03 00:38:21 +000091
92 if ((dev_desc->block_read(dev_desc->dev, 0, 1, (ulong *) buffer) != 1) ||
93 (buffer[DOS_PART_MAGIC_OFFSET + 0] != 0x55) ||
94 (buffer[DOS_PART_MAGIC_OFFSET + 1] != 0xaa) ) {
wdenk8bde7f72003-06-27 21:31:46 +000095 return (-1);
wdenkfe8c2802002-11-03 00:38:21 +000096 }
97 return (0);
98}
99
100/* Print a partition that is relative to its Extended partition table
101 */
102static void print_partition_extended (block_dev_desc_t *dev_desc, int ext_part_sector, int relative,
103 int part_num)
104{
Sergei Shtylyov54193c5d2011-06-03 09:37:43 +0000105 unsigned char buffer[dev_desc->blksz];
wdenkfe8c2802002-11-03 00:38:21 +0000106 dos_partition_t *pt;
107 int i;
108
109 if (dev_desc->block_read(dev_desc->dev, ext_part_sector, 1, (ulong *) buffer) != 1) {
110 printf ("** Can't read partition table on %d:%d **\n",
111 dev_desc->dev, ext_part_sector);
112 return;
113 }
wdenk7205e402003-09-10 22:30:53 +0000114 i=test_block_type(buffer);
115 if(i==-1) {
wdenkfe8c2802002-11-03 00:38:21 +0000116 printf ("bad MBR sector signature 0x%02x%02x\n",
117 buffer[DOS_PART_MAGIC_OFFSET],
118 buffer[DOS_PART_MAGIC_OFFSET + 1]);
119 return;
120 }
wdenk7205e402003-09-10 22:30:53 +0000121 if(i==DOS_PBR) {
122 printf (" 1\t\t 0\t%10ld\t%2x\n",
123 dev_desc->lba, buffer[DOS_PBR_MEDIA_TYPE_OFFSET]);
124 return;
125 }
wdenkfe8c2802002-11-03 00:38:21 +0000126 /* Print all primary/logical partitions */
127 pt = (dos_partition_t *) (buffer + DOS_PART_TBL_OFFSET);
128 for (i = 0; i < 4; i++, pt++) {
129 /*
wdenk8bde7f72003-06-27 21:31:46 +0000130 * fdisk does not show the extended partitions that
wdenkfe8c2802002-11-03 00:38:21 +0000131 * are not in the MBR
132 */
133
134 if ((pt->sys_ind != 0) &&
135 (ext_part_sector == 0 || !is_extended (pt->sys_ind)) ) {
136 print_one_part (pt, ext_part_sector, part_num);
137 }
138
139 /* Reverse engr the fdisk part# assignment rule! */
140 if ((ext_part_sector == 0) ||
141 (pt->sys_ind != 0 && !is_extended (pt->sys_ind)) ) {
142 part_num++;
143 }
144 }
145
146 /* Follows the extended partitions */
147 pt = (dos_partition_t *) (buffer + DOS_PART_TBL_OFFSET);
148 for (i = 0; i < 4; i++, pt++) {
149 if (is_extended (pt->sys_ind)) {
150 int lba_start = le32_to_int (pt->start4) + relative;
151
152 print_partition_extended (dev_desc, lba_start,
153 ext_part_sector == 0 ? lba_start
154 : relative,
155 part_num);
156 }
157 }
158
159 return;
160}
161
162
163/* Print a partition that is relative to its Extended partition table
164 */
165static int get_partition_info_extended (block_dev_desc_t *dev_desc, int ext_part_sector,
166 int relative, int part_num,
167 int which_part, disk_partition_t *info)
168{
Sergei Shtylyov54193c5d2011-06-03 09:37:43 +0000169 unsigned char buffer[dev_desc->blksz];
wdenkfe8c2802002-11-03 00:38:21 +0000170 dos_partition_t *pt;
171 int i;
172
173 if (dev_desc->block_read (dev_desc->dev, ext_part_sector, 1, (ulong *) buffer) != 1) {
174 printf ("** Can't read partition table on %d:%d **\n",
175 dev_desc->dev, ext_part_sector);
176 return -1;
177 }
178 if (buffer[DOS_PART_MAGIC_OFFSET] != 0x55 ||
179 buffer[DOS_PART_MAGIC_OFFSET + 1] != 0xaa) {
180 printf ("bad MBR sector signature 0x%02x%02x\n",
181 buffer[DOS_PART_MAGIC_OFFSET],
182 buffer[DOS_PART_MAGIC_OFFSET + 1]);
183 return -1;
184 }
185
186 /* Print all primary/logical partitions */
187 pt = (dos_partition_t *) (buffer + DOS_PART_TBL_OFFSET);
188 for (i = 0; i < 4; i++, pt++) {
189 /*
wdenk8bde7f72003-06-27 21:31:46 +0000190 * fdisk does not show the extended partitions that
191 * are not in the MBR
wdenkfe8c2802002-11-03 00:38:21 +0000192 */
Daniel Mack78f4ca72009-09-28 11:40:38 +0200193 if (((pt->boot_ind & ~0x80) == 0) &&
194 (pt->sys_ind != 0) &&
wdenk7f70e852003-05-20 14:25:27 +0000195 (part_num == which_part) &&
196 (is_extended(pt->sys_ind) == 0)) {
wdenkfe8c2802002-11-03 00:38:21 +0000197 info->blksz = 512;
198 info->start = ext_part_sector + le32_to_int (pt->start4);
199 info->size = le32_to_int (pt->size4);
200 switch(dev_desc->if_type) {
201 case IF_TYPE_IDE:
Dave Liuc7057b52008-03-26 22:49:44 +0800202 case IF_TYPE_SATA:
wdenkfe8c2802002-11-03 00:38:21 +0000203 case IF_TYPE_ATAPI:
Wolfgang Denk71665522009-07-28 22:35:39 +0200204 sprintf ((char *)info->name, "hd%c%d",
205 'a' + dev_desc->dev, part_num);
wdenkfe8c2802002-11-03 00:38:21 +0000206 break;
207 case IF_TYPE_SCSI:
Wolfgang Denk71665522009-07-28 22:35:39 +0200208 sprintf ((char *)info->name, "sd%c%d",
209 'a' + dev_desc->dev, part_num);
wdenkfe8c2802002-11-03 00:38:21 +0000210 break;
211 case IF_TYPE_USB:
Wolfgang Denk71665522009-07-28 22:35:39 +0200212 sprintf ((char *)info->name, "usbd%c%d",
213 'a' + dev_desc->dev, part_num);
wdenkfe8c2802002-11-03 00:38:21 +0000214 break;
215 case IF_TYPE_DOC:
Wolfgang Denk71665522009-07-28 22:35:39 +0200216 sprintf ((char *)info->name, "docd%c%d",
217 'a' + dev_desc->dev, part_num);
wdenkfe8c2802002-11-03 00:38:21 +0000218 break;
219 default:
Wolfgang Denk71665522009-07-28 22:35:39 +0200220 sprintf ((char *)info->name, "xx%c%d",
221 'a' + dev_desc->dev, part_num);
wdenkfe8c2802002-11-03 00:38:21 +0000222 break;
223 }
224 /* sprintf(info->type, "%d, pt->sys_ind); */
Wolfgang Denk77ddac92005-10-13 16:45:02 +0200225 sprintf ((char *)info->type, "U-Boot");
wdenkfe8c2802002-11-03 00:38:21 +0000226 return 0;
227 }
228
229 /* Reverse engr the fdisk part# assignment rule! */
230 if ((ext_part_sector == 0) ||
231 (pt->sys_ind != 0 && !is_extended (pt->sys_ind)) ) {
232 part_num++;
233 }
234 }
235
236 /* Follows the extended partitions */
237 pt = (dos_partition_t *) (buffer + DOS_PART_TBL_OFFSET);
238 for (i = 0; i < 4; i++, pt++) {
239 if (is_extended (pt->sys_ind)) {
240 int lba_start = le32_to_int (pt->start4) + relative;
241
242 return get_partition_info_extended (dev_desc, lba_start,
243 ext_part_sector == 0 ? lba_start : relative,
244 part_num, which_part, info);
245 }
246 }
247 return -1;
248}
249
250void print_part_dos (block_dev_desc_t *dev_desc)
251{
252 printf ("Partition Start Sector Num Sectors Type\n");
253 print_partition_extended (dev_desc, 0, 0, 1);
254}
255
256int get_partition_info_dos (block_dev_desc_t *dev_desc, int part, disk_partition_t * info)
257{
258 return get_partition_info_extended (dev_desc, 0, 0, 1, part, info);
259}
260
261
Jon Loeligercde5c642007-07-09 17:22:37 -0500262#endif