3 * Raymond Lo, lo@routefree.com
4 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
6 * See file CREDITS for list of people who contributed to this
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.
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.
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,
26 * Support for harddisk partitions.
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
39 #if ((CONFIG_COMMANDS & CFG_CMD_IDE) || (CONFIG_COMMANDS & CFG_CMD_SCSI)) && defined(CONFIG_DOS_PARTITION)
41 /* Convert char[4] in little endian format to the host format integer
43 static inline int le32_to_int(unsigned char *le32)
45 return ((le32[3] << 24) +
52 static inline int is_extended(int part_type)
54 return (part_type == 0x5 ||
59 static void print_one_part (dos_partition_t *p, int ext_part_sector, int part_num)
61 int lba_start = ext_part_sector + le32_to_int (p->start4);
62 int lba_size = le32_to_int (p->size4);
64 printf ("%5d\t\t%10d\t%10d\t%2x%s\n",
65 part_num, lba_start, lba_size, p->sys_ind,
66 (is_extended (p->sys_ind) ? " Extd" : ""));
70 int test_part_dos (block_dev_desc_t *dev_desc)
72 unsigned char buffer[DEFAULT_SECTOR_SIZE];
74 if ((dev_desc->block_read(dev_desc->dev, 0, 1, (ulong *) buffer) != 1) ||
75 (buffer[DOS_PART_MAGIC_OFFSET + 0] != 0x55) ||
76 (buffer[DOS_PART_MAGIC_OFFSET + 1] != 0xaa) ) {
82 /* Print a partition that is relative to its Extended partition table
84 static void print_partition_extended (block_dev_desc_t *dev_desc, int ext_part_sector, int relative,
87 unsigned char buffer[DEFAULT_SECTOR_SIZE];
91 if (dev_desc->block_read(dev_desc->dev, ext_part_sector, 1, (ulong *) buffer) != 1) {
92 printf ("** Can't read partition table on %d:%d **\n",
93 dev_desc->dev, ext_part_sector);
96 if (buffer[DOS_PART_MAGIC_OFFSET] != 0x55 ||
97 buffer[DOS_PART_MAGIC_OFFSET + 1] != 0xaa) {
98 printf ("bad MBR sector signature 0x%02x%02x\n",
99 buffer[DOS_PART_MAGIC_OFFSET],
100 buffer[DOS_PART_MAGIC_OFFSET + 1]);
104 /* Print all primary/logical partitions */
105 pt = (dos_partition_t *) (buffer + DOS_PART_TBL_OFFSET);
106 for (i = 0; i < 4; i++, pt++) {
108 * fdisk does not show the extended partitions that
112 if ((pt->sys_ind != 0) &&
113 (ext_part_sector == 0 || !is_extended (pt->sys_ind)) ) {
114 print_one_part (pt, ext_part_sector, part_num);
117 /* Reverse engr the fdisk part# assignment rule! */
118 if ((ext_part_sector == 0) ||
119 (pt->sys_ind != 0 && !is_extended (pt->sys_ind)) ) {
124 /* Follows the extended partitions */
125 pt = (dos_partition_t *) (buffer + DOS_PART_TBL_OFFSET);
126 for (i = 0; i < 4; i++, pt++) {
127 if (is_extended (pt->sys_ind)) {
128 int lba_start = le32_to_int (pt->start4) + relative;
130 print_partition_extended (dev_desc, lba_start,
131 ext_part_sector == 0 ? lba_start
141 /* Print a partition that is relative to its Extended partition table
143 static int get_partition_info_extended (block_dev_desc_t *dev_desc, int ext_part_sector,
144 int relative, int part_num,
145 int which_part, disk_partition_t *info)
147 unsigned char buffer[DEFAULT_SECTOR_SIZE];
151 if (dev_desc->block_read (dev_desc->dev, ext_part_sector, 1, (ulong *) buffer) != 1) {
152 printf ("** Can't read partition table on %d:%d **\n",
153 dev_desc->dev, ext_part_sector);
156 if (buffer[DOS_PART_MAGIC_OFFSET] != 0x55 ||
157 buffer[DOS_PART_MAGIC_OFFSET + 1] != 0xaa) {
158 printf ("bad MBR sector signature 0x%02x%02x\n",
159 buffer[DOS_PART_MAGIC_OFFSET],
160 buffer[DOS_PART_MAGIC_OFFSET + 1]);
164 /* Print all primary/logical partitions */
165 pt = (dos_partition_t *) (buffer + DOS_PART_TBL_OFFSET);
166 for (i = 0; i < 4; i++, pt++) {
168 * fdisk does not show the extended partitions that
171 if ((pt->sys_ind != 0) &&
172 (part_num == which_part) &&
173 (is_extended(pt->sys_ind) == 0)) {
175 info->start = ext_part_sector + le32_to_int (pt->start4);
176 info->size = le32_to_int (pt->size4);
177 switch(dev_desc->if_type) {
180 sprintf (info->name, "hd%c%d\n", 'a' + dev_desc->dev, part_num);
183 sprintf (info->name, "sd%c%d\n", 'a' + dev_desc->dev, part_num);
186 sprintf (info->name, "usbd%c%d\n", 'a' + dev_desc->dev, part_num);
189 sprintf (info->name, "docd%c%d\n", 'a' + dev_desc->dev, part_num);
192 sprintf (info->name, "xx%c%d\n", 'a' + dev_desc->dev, part_num);
195 /* sprintf(info->type, "%d, pt->sys_ind); */
196 sprintf (info->type, "U-Boot");
200 /* Reverse engr the fdisk part# assignment rule! */
201 if ((ext_part_sector == 0) ||
202 (pt->sys_ind != 0 && !is_extended (pt->sys_ind)) ) {
207 /* Follows the extended partitions */
208 pt = (dos_partition_t *) (buffer + DOS_PART_TBL_OFFSET);
209 for (i = 0; i < 4; i++, pt++) {
210 if (is_extended (pt->sys_ind)) {
211 int lba_start = le32_to_int (pt->start4) + relative;
213 return get_partition_info_extended (dev_desc, lba_start,
214 ext_part_sector == 0 ? lba_start : relative,
215 part_num, which_part, info);
221 void print_part_dos (block_dev_desc_t *dev_desc)
223 printf ("Partition Start Sector Num Sectors Type\n");
224 print_partition_extended (dev_desc, 0, 0, 1);
227 int get_partition_info_dos (block_dev_desc_t *dev_desc, int part, disk_partition_t * info)
229 return get_partition_info_extended (dev_desc, 0, 0, 1, part, info);
233 #endif /* (CONFIG_COMMANDS & CFG_CMD_IDE) && CONFIG_DOS_PARTITION */