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
38 #if ((CONFIG_COMMANDS & CFG_CMD_IDE) || \
39 (CONFIG_COMMANDS & CFG_CMD_SCSI) || \
40 (CONFIG_COMMANDS & CFG_CMD_USB) || \
41 (CONFIG_SYSTEMACE)) && defined(CONFIG_DOS_PARTITION)
43 /* Convert char[4] in little endian format to the host format integer
45 static inline int le32_to_int(unsigned char *le32)
47 return ((le32[3] << 24) +
54 static inline int is_extended(int part_type)
56 return (part_type == 0x5 ||
61 static void print_one_part (dos_partition_t *p, int ext_part_sector, int part_num)
63 int lba_start = ext_part_sector + le32_to_int (p->start4);
64 int lba_size = le32_to_int (p->size4);
66 printf ("%5d\t\t%10d\t%10d\t%2x%s\n",
67 part_num, lba_start, lba_size, p->sys_ind,
68 (is_extended (p->sys_ind) ? " Extd" : ""));
71 static int test_block_type(unsigned char *buffer)
73 if((buffer[DOS_PART_MAGIC_OFFSET + 0] != 0x55) ||
74 (buffer[DOS_PART_MAGIC_OFFSET + 1] != 0xaa) ) {
76 } /* no DOS Signature at all */
77 if(strncmp(&buffer[DOS_PBR_FSTYPE_OFFSET],"FAT",3)==0)
78 return DOS_PBR; /* is PBR */
79 return DOS_MBR; /* Is MBR */
83 int test_part_dos (block_dev_desc_t *dev_desc)
85 unsigned char buffer[DEFAULT_SECTOR_SIZE];
87 if ((dev_desc->block_read(dev_desc->dev, 0, 1, (ulong *) buffer) != 1) ||
88 (buffer[DOS_PART_MAGIC_OFFSET + 0] != 0x55) ||
89 (buffer[DOS_PART_MAGIC_OFFSET + 1] != 0xaa) ) {
95 /* Print a partition that is relative to its Extended partition table
97 static void print_partition_extended (block_dev_desc_t *dev_desc, int ext_part_sector, int relative,
100 unsigned char buffer[DEFAULT_SECTOR_SIZE];
104 if (dev_desc->block_read(dev_desc->dev, ext_part_sector, 1, (ulong *) buffer) != 1) {
105 printf ("** Can't read partition table on %d:%d **\n",
106 dev_desc->dev, ext_part_sector);
109 i=test_block_type(buffer);
111 printf ("bad MBR sector signature 0x%02x%02x\n",
112 buffer[DOS_PART_MAGIC_OFFSET],
113 buffer[DOS_PART_MAGIC_OFFSET + 1]);
117 printf (" 1\t\t 0\t%10ld\t%2x\n",
118 dev_desc->lba, buffer[DOS_PBR_MEDIA_TYPE_OFFSET]);
121 /* Print all primary/logical partitions */
122 pt = (dos_partition_t *) (buffer + DOS_PART_TBL_OFFSET);
123 for (i = 0; i < 4; i++, pt++) {
125 * fdisk does not show the extended partitions that
129 if ((pt->sys_ind != 0) &&
130 (ext_part_sector == 0 || !is_extended (pt->sys_ind)) ) {
131 print_one_part (pt, ext_part_sector, part_num);
134 /* Reverse engr the fdisk part# assignment rule! */
135 if ((ext_part_sector == 0) ||
136 (pt->sys_ind != 0 && !is_extended (pt->sys_ind)) ) {
141 /* Follows the extended partitions */
142 pt = (dos_partition_t *) (buffer + DOS_PART_TBL_OFFSET);
143 for (i = 0; i < 4; i++, pt++) {
144 if (is_extended (pt->sys_ind)) {
145 int lba_start = le32_to_int (pt->start4) + relative;
147 print_partition_extended (dev_desc, lba_start,
148 ext_part_sector == 0 ? lba_start
158 /* Print a partition that is relative to its Extended partition table
160 static int get_partition_info_extended (block_dev_desc_t *dev_desc, int ext_part_sector,
161 int relative, int part_num,
162 int which_part, disk_partition_t *info)
164 unsigned char buffer[DEFAULT_SECTOR_SIZE];
168 if (dev_desc->block_read (dev_desc->dev, ext_part_sector, 1, (ulong *) buffer) != 1) {
169 printf ("** Can't read partition table on %d:%d **\n",
170 dev_desc->dev, ext_part_sector);
173 if (buffer[DOS_PART_MAGIC_OFFSET] != 0x55 ||
174 buffer[DOS_PART_MAGIC_OFFSET + 1] != 0xaa) {
175 printf ("bad MBR sector signature 0x%02x%02x\n",
176 buffer[DOS_PART_MAGIC_OFFSET],
177 buffer[DOS_PART_MAGIC_OFFSET + 1]);
181 /* Print all primary/logical partitions */
182 pt = (dos_partition_t *) (buffer + DOS_PART_TBL_OFFSET);
183 for (i = 0; i < 4; i++, pt++) {
185 * fdisk does not show the extended partitions that
188 if ((pt->sys_ind != 0) &&
189 (part_num == which_part) &&
190 (is_extended(pt->sys_ind) == 0)) {
192 info->start = ext_part_sector + le32_to_int (pt->start4);
193 info->size = le32_to_int (pt->size4);
194 switch(dev_desc->if_type) {
197 sprintf (info->name, "hd%c%d\n", 'a' + dev_desc->dev, part_num);
200 sprintf (info->name, "sd%c%d\n", 'a' + dev_desc->dev, part_num);
203 sprintf (info->name, "usbd%c%d\n", 'a' + dev_desc->dev, part_num);
206 sprintf (info->name, "docd%c%d\n", 'a' + dev_desc->dev, part_num);
209 sprintf (info->name, "xx%c%d\n", 'a' + dev_desc->dev, part_num);
212 /* sprintf(info->type, "%d, pt->sys_ind); */
213 sprintf (info->type, "U-Boot");
217 /* Reverse engr the fdisk part# assignment rule! */
218 if ((ext_part_sector == 0) ||
219 (pt->sys_ind != 0 && !is_extended (pt->sys_ind)) ) {
224 /* Follows the extended partitions */
225 pt = (dos_partition_t *) (buffer + DOS_PART_TBL_OFFSET);
226 for (i = 0; i < 4; i++, pt++) {
227 if (is_extended (pt->sys_ind)) {
228 int lba_start = le32_to_int (pt->start4) + relative;
230 return get_partition_info_extended (dev_desc, lba_start,
231 ext_part_sector == 0 ? lba_start : relative,
232 part_num, which_part, info);
238 void print_part_dos (block_dev_desc_t *dev_desc)
240 printf ("Partition Start Sector Num Sectors Type\n");
241 print_partition_extended (dev_desc, 0, 0, 1);
244 int get_partition_info_dos (block_dev_desc_t *dev_desc, int part, disk_partition_t * info)
246 return get_partition_info_extended (dev_desc, 0, 0, 1, part, info);
250 #endif /* (CONFIG_COMMANDS & CFG_CMD_IDE) && CONFIG_DOS_PARTITION */