3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
5 * See file CREDITS for list of people who contributed to this
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License as
10 * published by the Free Software Foundation; either version 2 of
11 * the License, or (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
25 * Support for harddisk partitions.
27 * To be compatible with LinuxPPC and Apple we use the standard Apple
28 * SCSI disk partitioning scheme. For more information see:
29 * http://developer.apple.com/techpubs/mac/Devices/Devices-126.html#MARKER-14-92
37 #ifdef HAVE_BLOCK_DEVICE
39 /* stdlib.h causes some compatibility problems; should fixe these! -- wd */
40 #ifndef __ldiv_t_defined
42 long int quot; /* Quotient */
43 long int rem; /* Remainder */
45 extern ldiv_t ldiv (long int __numer, long int __denom);
46 # define __ldiv_t_defined 1
50 static int part_mac_read_ddb (block_dev_desc_t *dev_desc, mac_driver_desc_t *ddb_p);
51 static int part_mac_read_pdb (block_dev_desc_t *dev_desc, int part, mac_partition_t *pdb_p);
54 * Test for a valid MAC partition
56 int test_part_mac (block_dev_desc_t *dev_desc)
58 ALLOC_CACHE_ALIGN_BUFFER(mac_driver_desc_t, ddesc, 1);
59 ALLOC_CACHE_ALIGN_BUFFER(mac_partition_t, mpart, 1);
62 if (part_mac_read_ddb (dev_desc, ddesc)) {
63 /* error reading Driver Desriptor Block, or no valid Signature */
67 n = 1; /* assuming at least one partition */
68 for (i=1; i<=n; ++i) {
69 if ((dev_desc->block_read(dev_desc->dev, i, 1, (ulong *)mpart) != 1) ||
70 (mpart->signature != MAC_PARTITION_MAGIC) ) {
73 /* update partition count */
80 void print_part_mac (block_dev_desc_t *dev_desc)
83 ALLOC_CACHE_ALIGN_BUFFER(mac_driver_desc_t, ddesc, 1);
84 ALLOC_CACHE_ALIGN_BUFFER(mac_partition_t, mpart, 1);
87 if (part_mac_read_ddb (dev_desc, ddesc)) {
88 /* error reading Driver Desriptor Block, or no valid Signature */
94 mb = ldiv(n, ((1024 * 1024) / ddesc->blk_size)); /* MB */
95 /* round to 1 digit */
96 mb.rem *= 10 * ddesc->blk_size;
98 mb.rem /= 1024 * 1024;
100 gb = ldiv(10 * mb.quot + mb.rem, 10240);
105 printf ("Block Size=%d, Number of Blocks=%d, "
106 "Total Capacity: %ld.%ld MB = %ld.%ld GB\n"
107 "DeviceType=0x%x, DeviceId=0x%x\n\n"
109 " length base (size)\n",
112 mb.quot, mb.rem, gb.quot, gb.rem,
113 ddesc->dev_type, ddesc->dev_id
116 n = 1; /* assuming at least one partition */
117 for (i=1; i<=n; ++i) {
121 printf ("%4ld: ", i);
122 if (dev_desc->block_read (dev_desc->dev, i, 1, (ulong *)mpart) != 1) {
123 printf ("** Can't read Partition Map on %d:%ld **\n",
128 if (mpart->signature != MAC_PARTITION_MAGIC) {
129 printf ("** Bad Signature on %d:%ld - "
130 "expected 0x%04x, got 0x%04x\n",
131 dev_desc->dev, i, MAC_PARTITION_MAGIC, mpart->signature);
135 /* update partition count */
136 n = mpart->map_count;
139 bytes = mpart->block_count;
140 bytes /= (1024 / ddesc->blk_size); /* kB; assumes blk_size == 512 */
150 printf ("%20.32s %-18.32s %10u @ %-10u (%3ld%c)\n",
164 * Read Device Descriptor Block
166 static int part_mac_read_ddb (block_dev_desc_t *dev_desc, mac_driver_desc_t *ddb_p)
168 if (dev_desc->block_read(dev_desc->dev, 0, 1, (ulong *)ddb_p) != 1) {
169 printf ("** Can't read Driver Desriptor Block **\n");
173 if (ddb_p->signature != MAC_DRIVER_MAGIC) {
175 printf ("** Bad Signature: expected 0x%04x, got 0x%04x\n",
176 MAC_DRIVER_MAGIC, ddb_p->signature);
184 * Read Partition Descriptor Block
186 static int part_mac_read_pdb (block_dev_desc_t *dev_desc, int part, mac_partition_t *pdb_p)
192 * We must always read the descritpor block for
193 * partition 1 first since this is the only way to
194 * know how many partitions we have.
196 if (dev_desc->block_read (dev_desc->dev, n, 1, (ulong *)pdb_p) != 1) {
197 printf ("** Can't read Partition Map on %d:%d **\n",
202 if (pdb_p->signature != MAC_PARTITION_MAGIC) {
203 printf ("** Bad Signature on %d:%d: "
204 "expected 0x%04x, got 0x%04x\n",
205 dev_desc->dev, n, MAC_PARTITION_MAGIC, pdb_p->signature);
212 if ((part < 1) || (part > pdb_p->map_count)) {
213 printf ("** Invalid partition %d:%d [%d:1...%d:%d only]\n",
216 dev_desc->dev, pdb_p->map_count);
220 /* update partition count */
227 int get_partition_info_mac (block_dev_desc_t *dev_desc, int part, disk_partition_t *info)
229 ALLOC_CACHE_ALIGN_BUFFER(mac_driver_desc_t, ddesc, 1);
230 ALLOC_CACHE_ALIGN_BUFFER(mac_partition_t, mpart, 1);
232 if (part_mac_read_ddb (dev_desc, ddesc)) {
236 info->blksz = ddesc->blk_size;
238 if (part_mac_read_pdb (dev_desc, part, mpart)) {
242 info->start = mpart->start_block;
243 info->size = mpart->block_count;
244 memcpy (info->type, mpart->type, sizeof(info->type));
245 memcpy (info->name, mpart->name, sizeof(info->name));