3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
5 * SPDX-License-Identifier: GPL-2.0+
9 * Support for harddisk partitions.
11 * To be compatible with LinuxPPC and Apple we use the standard Apple
12 * SCSI disk partitioning scheme. For more information see:
13 * http://developer.apple.com/techpubs/mac/Devices/Devices-126.html#MARKER-14-92
21 #ifdef HAVE_BLOCK_DEVICE
23 /* stdlib.h causes some compatibility problems; should fixe these! -- wd */
24 #ifndef __ldiv_t_defined
26 long int quot; /* Quotient */
27 long int rem; /* Remainder */
29 extern ldiv_t ldiv (long int __numer, long int __denom);
30 # define __ldiv_t_defined 1
34 static int part_mac_read_ddb (block_dev_desc_t *dev_desc, mac_driver_desc_t *ddb_p);
35 static int part_mac_read_pdb (block_dev_desc_t *dev_desc, int part, mac_partition_t *pdb_p);
38 * Test for a valid MAC partition
40 int test_part_mac (block_dev_desc_t *dev_desc)
42 ALLOC_CACHE_ALIGN_BUFFER(mac_driver_desc_t, ddesc, 1);
43 ALLOC_CACHE_ALIGN_BUFFER(mac_partition_t, mpart, 1);
46 if (part_mac_read_ddb (dev_desc, ddesc)) {
47 /* error reading Driver Desriptor Block, or no valid Signature */
51 n = 1; /* assuming at least one partition */
52 for (i=1; i<=n; ++i) {
53 if ((dev_desc->block_read(dev_desc->dev, i, 1, (ulong *)mpart) != 1) ||
54 (mpart->signature != MAC_PARTITION_MAGIC) ) {
57 /* update partition count */
64 void print_part_mac (block_dev_desc_t *dev_desc)
67 ALLOC_CACHE_ALIGN_BUFFER(mac_driver_desc_t, ddesc, 1);
68 ALLOC_CACHE_ALIGN_BUFFER(mac_partition_t, mpart, 1);
71 if (part_mac_read_ddb (dev_desc, ddesc)) {
72 /* error reading Driver Desriptor Block, or no valid Signature */
78 mb = ldiv(n, ((1024 * 1024) / ddesc->blk_size)); /* MB */
79 /* round to 1 digit */
80 mb.rem *= 10 * ddesc->blk_size;
82 mb.rem /= 1024 * 1024;
84 gb = ldiv(10 * mb.quot + mb.rem, 10240);
89 printf ("Block Size=%d, Number of Blocks=%d, "
90 "Total Capacity: %ld.%ld MB = %ld.%ld GB\n"
91 "DeviceType=0x%x, DeviceId=0x%x\n\n"
93 " length base (size)\n",
96 mb.quot, mb.rem, gb.quot, gb.rem,
97 ddesc->dev_type, ddesc->dev_id
100 n = 1; /* assuming at least one partition */
101 for (i=1; i<=n; ++i) {
105 printf ("%4ld: ", i);
106 if (dev_desc->block_read (dev_desc->dev, i, 1, (ulong *)mpart) != 1) {
107 printf ("** Can't read Partition Map on %d:%ld **\n",
112 if (mpart->signature != MAC_PARTITION_MAGIC) {
113 printf ("** Bad Signature on %d:%ld - "
114 "expected 0x%04x, got 0x%04x\n",
115 dev_desc->dev, i, MAC_PARTITION_MAGIC, mpart->signature);
119 /* update partition count */
120 n = mpart->map_count;
123 bytes = mpart->block_count;
124 bytes /= (1024 / ddesc->blk_size); /* kB; assumes blk_size == 512 */
134 printf ("%20.32s %-18.32s %10u @ %-10u (%3ld%c)\n",
148 * Read Device Descriptor Block
150 static int part_mac_read_ddb (block_dev_desc_t *dev_desc, mac_driver_desc_t *ddb_p)
152 if (dev_desc->block_read(dev_desc->dev, 0, 1, (ulong *)ddb_p) != 1) {
153 printf ("** Can't read Driver Desriptor Block **\n");
157 if (ddb_p->signature != MAC_DRIVER_MAGIC) {
159 printf ("** Bad Signature: expected 0x%04x, got 0x%04x\n",
160 MAC_DRIVER_MAGIC, ddb_p->signature);
168 * Read Partition Descriptor Block
170 static int part_mac_read_pdb (block_dev_desc_t *dev_desc, int part, mac_partition_t *pdb_p)
176 * We must always read the descritpor block for
177 * partition 1 first since this is the only way to
178 * know how many partitions we have.
180 if (dev_desc->block_read (dev_desc->dev, n, 1, (ulong *)pdb_p) != 1) {
181 printf ("** Can't read Partition Map on %d:%d **\n",
186 if (pdb_p->signature != MAC_PARTITION_MAGIC) {
187 printf ("** Bad Signature on %d:%d: "
188 "expected 0x%04x, got 0x%04x\n",
189 dev_desc->dev, n, MAC_PARTITION_MAGIC, pdb_p->signature);
196 if ((part < 1) || (part > pdb_p->map_count)) {
197 printf ("** Invalid partition %d:%d [%d:1...%d:%d only]\n",
200 dev_desc->dev, pdb_p->map_count);
204 /* update partition count */
211 int get_partition_info_mac (block_dev_desc_t *dev_desc, int part, disk_partition_t *info)
213 ALLOC_CACHE_ALIGN_BUFFER(mac_driver_desc_t, ddesc, 1);
214 ALLOC_CACHE_ALIGN_BUFFER(mac_partition_t, mpart, 1);
216 if (part_mac_read_ddb (dev_desc, ddesc)) {
220 info->blksz = ddesc->blk_size;
222 if (part_mac_read_pdb (dev_desc, part, mpart)) {
226 info->start = mpart->start_block;
227 info->size = mpart->block_count;
228 memcpy (info->type, mpart->type, sizeof(info->type));
229 memcpy (info->name, mpart->name, sizeof(info->name));