]>
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 (block_dev_desc_t
*dev_desc
, mac_driver_desc_t
*ddb_p
);
36 static int part_mac_read_pdb (block_dev_desc_t
*dev_desc
, int part
, mac_partition_t
*pdb_p
);
39 * Test for a valid MAC partition
41 int test_part_mac (block_dev_desc_t
*dev_desc
)
43 ALLOC_CACHE_ALIGN_BUFFER(mac_driver_desc_t
, ddesc
, 1);
44 ALLOC_CACHE_ALIGN_BUFFER(mac_partition_t
, mpart
, 1);
47 if (part_mac_read_ddb (dev_desc
, ddesc
)) {
48 /* error reading Driver Desriptor Block, or no valid Signature */
52 n
= 1; /* assuming at least one partition */
53 for (i
=1; i
<=n
; ++i
) {
54 if ((dev_desc
->block_read(dev_desc
->dev
, i
, 1, (ulong
*)mpart
) != 1) ||
55 (mpart
->signature
!= MAC_PARTITION_MAGIC
) ) {
58 /* update partition count */
65 void print_part_mac (block_dev_desc_t
*dev_desc
)
68 ALLOC_CACHE_ALIGN_BUFFER(mac_driver_desc_t
, ddesc
, 1);
69 ALLOC_CACHE_ALIGN_BUFFER(mac_partition_t
, mpart
, 1);
72 if (part_mac_read_ddb (dev_desc
, ddesc
)) {
73 /* error reading Driver Desriptor Block, or no valid Signature */
79 mb
= ldiv(n
, ((1024 * 1024) / ddesc
->blk_size
)); /* MB */
80 /* round to 1 digit */
81 mb
.rem
*= 10 * ddesc
->blk_size
;
83 mb
.rem
/= 1024 * 1024;
85 gb
= ldiv(10 * mb
.quot
+ mb
.rem
, 10240);
90 printf ("Block Size=%d, Number of Blocks=%d, "
91 "Total Capacity: %ld.%ld MB = %ld.%ld GB\n"
92 "DeviceType=0x%x, DeviceId=0x%x\n\n"
94 " length base (size)\n",
97 mb
.quot
, mb
.rem
, gb
.quot
, gb
.rem
,
98 ddesc
->dev_type
, ddesc
->dev_id
101 n
= 1; /* assuming at least one partition */
102 for (i
=1; i
<=n
; ++i
) {
106 printf ("%4ld: ", i
);
107 if (dev_desc
->block_read (dev_desc
->dev
, i
, 1, (ulong
*)mpart
) != 1) {
108 printf ("** Can't read Partition Map on %d:%ld **\n",
113 if (mpart
->signature
!= MAC_PARTITION_MAGIC
) {
114 printf ("** Bad Signature on %d:%ld - "
115 "expected 0x%04x, got 0x%04x\n",
116 dev_desc
->dev
, i
, MAC_PARTITION_MAGIC
, mpart
->signature
);
120 /* update partition count */
121 n
= mpart
->map_count
;
124 bytes
= mpart
->block_count
;
125 bytes
/= (1024 / ddesc
->blk_size
); /* kB; assumes blk_size == 512 */
135 printf ("%20.32s %-18.32s %10u @ %-10u (%3ld%c)\n",
149 * Read Device Descriptor Block
151 static int part_mac_read_ddb (block_dev_desc_t
*dev_desc
, mac_driver_desc_t
*ddb_p
)
153 if (dev_desc
->block_read(dev_desc
->dev
, 0, 1, (ulong
*)ddb_p
) != 1) {
154 printf ("** Can't read Driver Desriptor Block **\n");
158 if (ddb_p
->signature
!= MAC_DRIVER_MAGIC
) {
160 printf ("** Bad Signature: expected 0x%04x, got 0x%04x\n",
161 MAC_DRIVER_MAGIC
, ddb_p
->signature
);
169 * Read Partition Descriptor Block
171 static int part_mac_read_pdb (block_dev_desc_t
*dev_desc
, int part
, mac_partition_t
*pdb_p
)
177 * We must always read the descritpor block for
178 * partition 1 first since this is the only way to
179 * know how many partitions we have.
181 if (dev_desc
->block_read (dev_desc
->dev
, n
, 1, (ulong
*)pdb_p
) != 1) {
182 printf ("** Can't read Partition Map on %d:%d **\n",
187 if (pdb_p
->signature
!= MAC_PARTITION_MAGIC
) {
188 printf ("** Bad Signature on %d:%d: "
189 "expected 0x%04x, got 0x%04x\n",
190 dev_desc
->dev
, n
, MAC_PARTITION_MAGIC
, pdb_p
->signature
);
197 if ((part
< 1) || (part
> pdb_p
->map_count
)) {
198 printf ("** Invalid partition %d:%d [%d:1...%d:%d only]\n",
201 dev_desc
->dev
, pdb_p
->map_count
);
205 /* update partition count */
212 int get_partition_info_mac (block_dev_desc_t
*dev_desc
, int part
, disk_partition_t
*info
)
214 ALLOC_CACHE_ALIGN_BUFFER(mac_driver_desc_t
, ddesc
, 1);
215 ALLOC_CACHE_ALIGN_BUFFER(mac_partition_t
, mpart
, 1);
217 if (part_mac_read_ddb (dev_desc
, ddesc
)) {
221 info
->blksz
= ddesc
->blk_size
;
223 if (part_mac_read_pdb (dev_desc
, part
, mpart
)) {
227 info
->start
= mpart
->start_block
;
228 info
->size
= mpart
->block_count
;
229 memcpy (info
->type
, mpart
->type
, sizeof(info
->type
));
230 memcpy (info
->name
, mpart
->name
, sizeof(info
->name
));