]>
git.ipfire.org Git - thirdparty/u-boot.git/blob - disk/part_mac.c
1 // SPDX-License-Identifier: GPL-2.0+
4 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
8 * Support for harddisk partitions.
10 * To be compatible with LinuxPPC and Apple we use the standard Apple
11 * SCSI disk partitioning scheme. For more information see:
12 * http://developer.apple.com/techpubs/mac/Devices/Devices-126.html#MARKER-14-92
21 #ifdef CONFIG_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(struct blk_desc
*dev_desc
,
35 mac_driver_desc_t
*ddb_p
);
36 static int part_mac_read_pdb(struct blk_desc
*dev_desc
, int part
,
37 mac_partition_t
*pdb_p
);
40 * Test for a valid MAC partition
42 static int part_test_mac(struct blk_desc
*dev_desc
)
44 ALLOC_CACHE_ALIGN_BUFFER(mac_driver_desc_t
, ddesc
, 1);
45 ALLOC_CACHE_ALIGN_BUFFER(mac_partition_t
, mpart
, 1);
48 if (part_mac_read_ddb (dev_desc
, ddesc
)) {
50 * error reading Driver Descriptor Block,
51 * or no valid Signature
56 n
= 1; /* assuming at least one partition */
57 for (i
=1; i
<=n
; ++i
) {
58 if ((blk_dread(dev_desc
, i
, 1, (ulong
*)mpart
) != 1) ||
59 (mpart
->signature
!= MAC_PARTITION_MAGIC
) ) {
62 /* update partition count */
68 static void part_print_mac(struct blk_desc
*dev_desc
)
71 ALLOC_CACHE_ALIGN_BUFFER(mac_driver_desc_t
, ddesc
, 1);
72 ALLOC_CACHE_ALIGN_BUFFER(mac_partition_t
, mpart
, 1);
75 if (part_mac_read_ddb (dev_desc
, ddesc
)) {
77 * error reading Driver Descriptor Block,
78 * or no valid Signature
85 mb
= ldiv(n
, ((1024 * 1024) / ddesc
->blk_size
)); /* MB */
86 /* round to 1 digit */
87 mb
.rem
*= 10 * ddesc
->blk_size
;
89 mb
.rem
/= 1024 * 1024;
91 gb
= ldiv(10 * mb
.quot
+ mb
.rem
, 10240);
96 printf ("Block Size=%d, Number of Blocks=%d, "
97 "Total Capacity: %ld.%ld MB = %ld.%ld GB\n"
98 "DeviceType=0x%x, DeviceId=0x%x\n\n"
100 " length base (size)\n",
103 mb
.quot
, mb
.rem
, gb
.quot
, gb
.rem
,
104 ddesc
->dev_type
, ddesc
->dev_id
107 n
= 1; /* assuming at least one partition */
108 for (i
=1; i
<=n
; ++i
) {
112 printf ("%4ld: ", i
);
113 if (blk_dread(dev_desc
, i
, 1, (ulong
*)mpart
) != 1) {
114 printf ("** Can't read Partition Map on %d:%ld **\n",
115 dev_desc
->devnum
, i
);
119 if (mpart
->signature
!= MAC_PARTITION_MAGIC
) {
120 printf("** Bad Signature on %d:%ld - expected 0x%04x, got 0x%04x\n",
121 dev_desc
->devnum
, i
, MAC_PARTITION_MAGIC
,
126 /* update partition count */
127 n
= mpart
->map_count
;
130 bytes
= mpart
->block_count
;
131 bytes
/= (1024 / ddesc
->blk_size
); /* kB; assumes blk_size == 512 */
141 printf ("%20.32s %-18.32s %10u @ %-10u (%3ld%c)\n",
155 * Read Device Descriptor Block
157 static int part_mac_read_ddb(struct blk_desc
*dev_desc
,
158 mac_driver_desc_t
*ddb_p
)
160 if (blk_dread(dev_desc
, 0, 1, (ulong
*)ddb_p
) != 1) {
161 debug("** Can't read Driver Descriptor Block **\n");
165 if (ddb_p
->signature
!= MAC_DRIVER_MAGIC
) {
172 * Read Partition Descriptor Block
174 static int part_mac_read_pdb(struct blk_desc
*dev_desc
, int part
,
175 mac_partition_t
*pdb_p
)
181 * We must always read the descritpor block for
182 * partition 1 first since this is the only way to
183 * know how many partitions we have.
185 if (blk_dread(dev_desc
, n
, 1, (ulong
*)pdb_p
) != 1) {
186 printf ("** Can't read Partition Map on %d:%d **\n",
187 dev_desc
->devnum
, n
);
191 if (pdb_p
->signature
!= MAC_PARTITION_MAGIC
) {
192 printf("** Bad Signature on %d:%d: expected 0x%04x, got 0x%04x\n",
193 dev_desc
->devnum
, n
, MAC_PARTITION_MAGIC
,
201 if ((part
< 1) || (part
> pdb_p
->map_count
)) {
202 printf ("** Invalid partition %d:%d [%d:1...%d:%d only]\n",
203 dev_desc
->devnum
, part
,
205 dev_desc
->devnum
, pdb_p
->map_count
);
209 /* update partition count */
216 static int part_get_info_mac(struct blk_desc
*dev_desc
, int part
,
217 struct disk_partition
*info
)
219 ALLOC_CACHE_ALIGN_BUFFER(mac_driver_desc_t
, ddesc
, 1);
220 ALLOC_CACHE_ALIGN_BUFFER(mac_partition_t
, mpart
, 1);
222 if (part_mac_read_ddb (dev_desc
, ddesc
)) {
226 info
->blksz
= ddesc
->blk_size
;
228 if (part_mac_read_pdb (dev_desc
, part
, mpart
)) {
232 info
->start
= mpart
->start_block
;
233 info
->size
= mpart
->block_count
;
234 memcpy (info
->type
, mpart
->type
, sizeof(info
->type
));
235 memcpy (info
->name
, mpart
->name
, sizeof(info
->name
));
240 U_BOOT_PART_TYPE(mac
) = {
242 .part_type
= PART_TYPE_MAC
,
243 .max_entries
= MAC_ENTRY_NUMBERS
,
244 .get_info
= part_get_info_mac
,
245 .print
= part_print_mac
,
246 .test
= part_test_mac
,