]>
git.ipfire.org Git - thirdparty/u-boot.git/blob - disk/part_mac.c
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
));