]>
git.ipfire.org Git - people/ms/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
22 #ifdef HAVE_BLOCK_DEVICE
24 /* stdlib.h causes some compatibility problems; should fixe these! -- wd */
25 #ifndef __ldiv_t_defined
27 long int quot
; /* Quotient */
28 long int rem
; /* Remainder */
30 extern ldiv_t ldiv (long int __numer
, long int __denom
);
31 # define __ldiv_t_defined 1
35 static int part_mac_read_ddb(struct blk_desc
*dev_desc
,
36 mac_driver_desc_t
*ddb_p
);
37 static int part_mac_read_pdb(struct blk_desc
*dev_desc
, int part
,
38 mac_partition_t
*pdb_p
);
41 * Test for a valid MAC partition
43 static int part_test_mac(struct blk_desc
*dev_desc
)
45 ALLOC_CACHE_ALIGN_BUFFER(mac_driver_desc_t
, ddesc
, 1);
46 ALLOC_CACHE_ALIGN_BUFFER(mac_partition_t
, mpart
, 1);
49 if (part_mac_read_ddb (dev_desc
, ddesc
)) {
50 /* error reading Driver Desriptor Block, or no valid Signature */
54 n
= 1; /* assuming at least one partition */
55 for (i
=1; i
<=n
; ++i
) {
56 if ((blk_dread(dev_desc
, i
, 1, (ulong
*)mpart
) != 1) ||
57 (mpart
->signature
!= MAC_PARTITION_MAGIC
) ) {
60 /* update partition count */
66 static void part_print_mac(struct blk_desc
*dev_desc
)
69 ALLOC_CACHE_ALIGN_BUFFER(mac_driver_desc_t
, ddesc
, 1);
70 ALLOC_CACHE_ALIGN_BUFFER(mac_partition_t
, mpart
, 1);
73 if (part_mac_read_ddb (dev_desc
, ddesc
)) {
74 /* error reading Driver Desriptor Block, or no valid Signature */
80 mb
= ldiv(n
, ((1024 * 1024) / ddesc
->blk_size
)); /* MB */
81 /* round to 1 digit */
82 mb
.rem
*= 10 * ddesc
->blk_size
;
84 mb
.rem
/= 1024 * 1024;
86 gb
= ldiv(10 * mb
.quot
+ mb
.rem
, 10240);
91 printf ("Block Size=%d, Number of Blocks=%d, "
92 "Total Capacity: %ld.%ld MB = %ld.%ld GB\n"
93 "DeviceType=0x%x, DeviceId=0x%x\n\n"
95 " length base (size)\n",
98 mb
.quot
, mb
.rem
, gb
.quot
, gb
.rem
,
99 ddesc
->dev_type
, ddesc
->dev_id
102 n
= 1; /* assuming at least one partition */
103 for (i
=1; i
<=n
; ++i
) {
107 printf ("%4ld: ", i
);
108 if (blk_dread(dev_desc
, i
, 1, (ulong
*)mpart
) != 1) {
109 printf ("** Can't read Partition Map on %d:%ld **\n",
110 dev_desc
->devnum
, i
);
114 if (mpart
->signature
!= MAC_PARTITION_MAGIC
) {
115 printf("** Bad Signature on %d:%ld - expected 0x%04x, got 0x%04x\n",
116 dev_desc
->devnum
, i
, MAC_PARTITION_MAGIC
,
121 /* update partition count */
122 n
= mpart
->map_count
;
125 bytes
= mpart
->block_count
;
126 bytes
/= (1024 / ddesc
->blk_size
); /* kB; assumes blk_size == 512 */
136 printf ("%20.32s %-18.32s %10u @ %-10u (%3ld%c)\n",
150 * Read Device Descriptor Block
152 static int part_mac_read_ddb(struct blk_desc
*dev_desc
,
153 mac_driver_desc_t
*ddb_p
)
155 if (blk_dread(dev_desc
, 0, 1, (ulong
*)ddb_p
) != 1) {
156 printf ("** Can't read Driver Desriptor Block **\n");
160 if (ddb_p
->signature
!= MAC_DRIVER_MAGIC
) {
162 printf ("** Bad Signature: expected 0x%04x, got 0x%04x\n",
163 MAC_DRIVER_MAGIC
, ddb_p
->signature
);
171 * Read Partition Descriptor Block
173 static int part_mac_read_pdb(struct blk_desc
*dev_desc
, int part
,
174 mac_partition_t
*pdb_p
)
180 * We must always read the descritpor block for
181 * partition 1 first since this is the only way to
182 * know how many partitions we have.
184 if (blk_dread(dev_desc
, n
, 1, (ulong
*)pdb_p
) != 1) {
185 printf ("** Can't read Partition Map on %d:%d **\n",
186 dev_desc
->devnum
, n
);
190 if (pdb_p
->signature
!= MAC_PARTITION_MAGIC
) {
191 printf("** Bad Signature on %d:%d: expected 0x%04x, got 0x%04x\n",
192 dev_desc
->devnum
, n
, MAC_PARTITION_MAGIC
,
200 if ((part
< 1) || (part
> pdb_p
->map_count
)) {
201 printf ("** Invalid partition %d:%d [%d:1...%d:%d only]\n",
202 dev_desc
->devnum
, part
,
204 dev_desc
->devnum
, pdb_p
->map_count
);
208 /* update partition count */
215 static int part_get_info_mac(struct blk_desc
*dev_desc
, int part
,
216 disk_partition_t
*info
)
218 ALLOC_CACHE_ALIGN_BUFFER(mac_driver_desc_t
, ddesc
, 1);
219 ALLOC_CACHE_ALIGN_BUFFER(mac_partition_t
, mpart
, 1);
221 if (part_mac_read_ddb (dev_desc
, ddesc
)) {
225 info
->blksz
= ddesc
->blk_size
;
227 if (part_mac_read_pdb (dev_desc
, part
, mpart
)) {
231 info
->start
= mpart
->start_block
;
232 info
->size
= mpart
->block_count
;
233 memcpy (info
->type
, mpart
->type
, sizeof(info
->type
));
234 memcpy (info
->name
, mpart
->name
, sizeof(info
->name
));
239 U_BOOT_PART_TYPE(mac
) = {
241 .part_type
= PART_TYPE_MAC
,
242 .get_info
= part_get_info_mac
,
243 .print
= part_print_mac
,
244 .test
= part_test_mac
,