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 defined(CONFIG_CMD_IDE) || \
39 defined(CONFIG_CMD_SATA) || \
40 defined(CONFIG_CMD_SCSI) || \
41 defined(CONFIG_CMD_USB) || \
42 defined(CONFIG_MMC) || \
43 defined(CONFIG_SYSTEMACE)
45 /* Convert char[4] in little endian format to the host format integer
47 static inline int le32_to_int(unsigned char *le32)
49 return ((le32[3] << 24) +
56 static inline int is_extended(int part_type)
58 return (part_type == 0x5 ||
63 static inline int is_bootable(dos_partition_t *p)
65 return p->boot_ind == 0x80;
68 static void print_one_part(dos_partition_t *p, int ext_part_sector,
71 int lba_start = ext_part_sector + le32_to_int (p->start4);
72 int lba_size = le32_to_int (p->size4);
74 printf("%5d\t\t%10d\t%10d\t%2x%s%s\n",
75 part_num, lba_start, lba_size, p->sys_ind,
76 (is_extended(p->sys_ind) ? " Extd" : ""),
77 (is_bootable(p) ? " Boot" : ""));
80 static int test_block_type(unsigned char *buffer)
82 if((buffer[DOS_PART_MAGIC_OFFSET + 0] != 0x55) ||
83 (buffer[DOS_PART_MAGIC_OFFSET + 1] != 0xaa) ) {
85 } /* no DOS Signature at all */
86 if (strncmp((char *)&buffer[DOS_PBR_FSTYPE_OFFSET],"FAT",3)==0 ||
87 strncmp((char *)&buffer[DOS_PBR32_FSTYPE_OFFSET],"FAT32",5)==0) {
88 return DOS_PBR; /* is PBR */
90 return DOS_MBR; /* Is MBR */
94 int test_part_dos (block_dev_desc_t *dev_desc)
96 ALLOC_CACHE_ALIGN_BUFFER(unsigned char, buffer, dev_desc->blksz);
98 if (dev_desc->block_read(dev_desc->dev, 0, 1, (ulong *) buffer) != 1)
101 if (test_block_type(buffer) != DOS_MBR)
107 /* Print a partition that is relative to its Extended partition table
109 static void print_partition_extended(block_dev_desc_t *dev_desc,
110 int ext_part_sector, int relative,
113 ALLOC_CACHE_ALIGN_BUFFER(unsigned char, buffer, dev_desc->blksz);
117 if (dev_desc->block_read(dev_desc->dev, ext_part_sector, 1, (ulong *) buffer) != 1) {
118 printf ("** Can't read partition table on %d:%d **\n",
119 dev_desc->dev, ext_part_sector);
122 i=test_block_type(buffer);
124 printf ("bad MBR sector signature 0x%02x%02x\n",
125 buffer[DOS_PART_MAGIC_OFFSET],
126 buffer[DOS_PART_MAGIC_OFFSET + 1]);
130 /* Print all primary/logical partitions */
131 pt = (dos_partition_t *) (buffer + DOS_PART_TBL_OFFSET);
132 for (i = 0; i < 4; i++, pt++) {
134 * fdisk does not show the extended partitions that
138 if ((pt->sys_ind != 0) &&
139 (ext_part_sector == 0 || !is_extended (pt->sys_ind)) ) {
140 print_one_part(pt, ext_part_sector, part_num);
143 /* Reverse engr the fdisk part# assignment rule! */
144 if ((ext_part_sector == 0) ||
145 (pt->sys_ind != 0 && !is_extended (pt->sys_ind)) ) {
150 /* Follows the extended partitions */
151 pt = (dos_partition_t *) (buffer + DOS_PART_TBL_OFFSET);
152 for (i = 0; i < 4; i++, pt++) {
153 if (is_extended (pt->sys_ind)) {
154 int lba_start = le32_to_int (pt->start4) + relative;
156 print_partition_extended(dev_desc, lba_start,
157 ext_part_sector == 0 ? lba_start : relative,
166 /* Print a partition that is relative to its Extended partition table
168 static int get_partition_info_extended (block_dev_desc_t *dev_desc, int ext_part_sector,
169 int relative, int part_num,
170 int which_part, disk_partition_t *info,
171 unsigned int disksig)
173 ALLOC_CACHE_ALIGN_BUFFER(unsigned char, buffer, dev_desc->blksz);
177 if (dev_desc->block_read (dev_desc->dev, ext_part_sector, 1, (ulong *) buffer) != 1) {
178 printf ("** Can't read partition table on %d:%d **\n",
179 dev_desc->dev, ext_part_sector);
182 if (buffer[DOS_PART_MAGIC_OFFSET] != 0x55 ||
183 buffer[DOS_PART_MAGIC_OFFSET + 1] != 0xaa) {
184 printf ("bad MBR sector signature 0x%02x%02x\n",
185 buffer[DOS_PART_MAGIC_OFFSET],
186 buffer[DOS_PART_MAGIC_OFFSET + 1]);
190 #ifdef CONFIG_PARTITION_UUIDS
191 if (!ext_part_sector)
192 disksig = le32_to_int(&buffer[DOS_PART_DISKSIG_OFFSET]);
195 /* Print all primary/logical partitions */
196 pt = (dos_partition_t *) (buffer + DOS_PART_TBL_OFFSET);
197 for (i = 0; i < 4; i++, pt++) {
199 * fdisk does not show the extended partitions that
202 if (((pt->boot_ind & ~0x80) == 0) &&
203 (pt->sys_ind != 0) &&
204 (part_num == which_part) &&
205 (is_extended(pt->sys_ind) == 0)) {
207 info->start = ext_part_sector + le32_to_int (pt->start4);
208 info->size = le32_to_int (pt->size4);
209 switch(dev_desc->if_type) {
213 sprintf ((char *)info->name, "hd%c%d",
214 'a' + dev_desc->dev, part_num);
217 sprintf ((char *)info->name, "sd%c%d",
218 'a' + dev_desc->dev, part_num);
221 sprintf ((char *)info->name, "usbd%c%d",
222 'a' + dev_desc->dev, part_num);
225 sprintf ((char *)info->name, "docd%c%d",
226 'a' + dev_desc->dev, part_num);
229 sprintf ((char *)info->name, "xx%c%d",
230 'a' + dev_desc->dev, part_num);
233 /* sprintf(info->type, "%d, pt->sys_ind); */
234 sprintf ((char *)info->type, "U-Boot");
235 info->bootable = is_bootable(pt);
236 #ifdef CONFIG_PARTITION_UUIDS
237 sprintf(info->uuid, "%08x-%02x", disksig, part_num);
242 /* Reverse engr the fdisk part# assignment rule! */
243 if ((ext_part_sector == 0) ||
244 (pt->sys_ind != 0 && !is_extended (pt->sys_ind)) ) {
249 /* Follows the extended partitions */
250 pt = (dos_partition_t *) (buffer + DOS_PART_TBL_OFFSET);
251 for (i = 0; i < 4; i++, pt++) {
252 if (is_extended (pt->sys_ind)) {
253 int lba_start = le32_to_int (pt->start4) + relative;
255 return get_partition_info_extended (dev_desc, lba_start,
256 ext_part_sector == 0 ? lba_start : relative,
257 part_num, which_part, info, disksig);
263 void print_part_dos (block_dev_desc_t *dev_desc)
265 printf("Partition Start Sector Num Sectors Type\n");
266 print_partition_extended(dev_desc, 0, 0, 1);
269 int get_partition_info_dos (block_dev_desc_t *dev_desc, int part, disk_partition_t * info)
271 return get_partition_info_extended(dev_desc, 0, 0, 1, part, info, 0);