]>
git.ipfire.org Git - people/ms/u-boot.git/blob - disk/part.c
3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
5 * SPDX-License-Identifier: GPL-2.0+
14 #include <ubifs_uboot.h>
19 #define PRINTF(fmt,args...) printf (fmt ,##args)
21 #define PRINTF(fmt,args...)
24 /* Check all partition types */
25 #define PART_TYPE_ALL -1
27 DECLARE_GLOBAL_DATA_PTR
;
29 #ifdef HAVE_BLOCK_DEVICE
30 static struct part_driver
*part_driver_lookup_type(int part_type
)
32 struct part_driver
*drv
=
33 ll_entry_start(struct part_driver
, part_driver
);
34 const int n_ents
= ll_entry_count(struct part_driver
, part_driver
);
35 struct part_driver
*entry
;
37 for (entry
= drv
; entry
!= drv
+ n_ents
; entry
++) {
38 if (part_type
== entry
->part_type
)
46 static struct blk_desc
*get_dev_hwpart(const char *ifname
, int dev
, int hwpart
)
48 struct blk_desc
*dev_desc
;
51 dev_desc
= blk_get_devnum_by_typename(ifname
, dev
);
53 debug("%s: No device for iface '%s', dev %d\n", __func__
,
57 ret
= blk_dselect_hwpart(dev_desc
, hwpart
);
59 debug("%s: Failed to select h/w partition: err-%d\n", __func__
,
67 struct blk_desc
*blk_get_dev(const char *ifname
, int dev
)
69 return get_dev_hwpart(ifname
, dev
, 0);
72 struct blk_desc
*get_dev_hwpart(const char *ifname
, int dev
, int hwpart
)
77 struct blk_desc
*blk_get_dev(const char *ifname
, int dev
)
83 #ifdef HAVE_BLOCK_DEVICE
85 /* ------------------------------------------------------------------------- */
87 * reports device info to the user
91 typedef uint64_t lba512_t
;
93 typedef lbaint_t lba512_t
;
97 * Overflowless variant of (block_count * mul_by / div_by)
98 * when div_by > mul_by
100 static lba512_t
lba512_muldiv(lba512_t block_count
, lba512_t mul_by
, lba512_t div_by
)
102 lba512_t bc_quot
, bc_rem
;
104 /* x * m / d == x / d * m + (x % d) * m / d */
105 bc_quot
= block_count
/ div_by
;
106 bc_rem
= block_count
- div_by
* bc_quot
;
107 return bc_quot
* mul_by
+ (bc_rem
* mul_by
) / div_by
;
110 void dev_print (struct blk_desc
*dev_desc
)
112 lba512_t lba512
; /* number of blocks if 512bytes block size */
114 if (dev_desc
->type
== DEV_TYPE_UNKNOWN
) {
115 puts ("not available\n");
119 switch (dev_desc
->if_type
) {
121 printf ("(%d:%d) Vendor: %s Prod.: %s Rev: %s\n",
122 dev_desc
->target
,dev_desc
->lun
,
130 printf ("Model: %s Firm: %s Ser#: %s\n",
139 printf ("Vendor: %s Rev: %s Prod: %s\n",
145 puts("device type DOC\n");
147 case IF_TYPE_UNKNOWN
:
148 puts("device type unknown\n");
151 printf("Unhandled device type: %i\n", dev_desc
->if_type
);
155 if (dev_desc
->removable
)
157 switch (dev_desc
->type
& 0x1F) {
158 case DEV_TYPE_HARDDISK
:
164 case DEV_TYPE_OPDISK
:
165 puts ("Optical Device");
171 printf ("# %02X #", dev_desc
->type
& 0x1F);
175 if (dev_desc
->lba
> 0L && dev_desc
->blksz
> 0L) {
176 ulong mb
, mb_quot
, mb_rem
, gb
, gb_quot
, gb_rem
;
181 lba512
= (lba
* (dev_desc
->blksz
/512));
182 /* round to 1 digit */
183 /* 2048 = (1024 * 1024) / 512 MB */
184 mb
= lba512_muldiv(lba512
, 10, 2048);
187 mb_rem
= mb
- (10 * mb_quot
);
191 gb_rem
= gb
- (10 * gb_quot
);
194 printf (" Supports 48-bit addressing\n");
196 #if defined(CONFIG_SYS_64BIT_LBA)
197 printf (" Capacity: %lu.%lu MB = %lu.%lu GB (%llu x %lu)\n",
203 printf (" Capacity: %lu.%lu MB = %lu.%lu GB (%lu x %lu)\n",
210 puts (" Capacity: not available\n");
215 #ifdef HAVE_BLOCK_DEVICE
217 void part_init(struct blk_desc
*dev_desc
)
219 struct part_driver
*drv
=
220 ll_entry_start(struct part_driver
, part_driver
);
221 const int n_ents
= ll_entry_count(struct part_driver
, part_driver
);
222 struct part_driver
*entry
;
224 blkcache_invalidate(dev_desc
->if_type
, dev_desc
->devnum
);
226 dev_desc
->part_type
= PART_TYPE_UNKNOWN
;
227 for (entry
= drv
; entry
!= drv
+ n_ents
; entry
++) {
230 ret
= entry
->test(dev_desc
);
231 debug("%s: try '%s': ret=%d\n", __func__
, entry
->name
, ret
);
233 dev_desc
->part_type
= entry
->part_type
;
239 static void print_part_header(const char *type
, struct blk_desc
*dev_desc
)
241 #if CONFIG_IS_ENABLED(MAC_PARTITION) || \
242 CONFIG_IS_ENABLED(DOS_PARTITION) || \
243 CONFIG_IS_ENABLED(ISO_PARTITION) || \
244 CONFIG_IS_ENABLED(AMIGA_PARTITION) || \
245 CONFIG_IS_ENABLED(EFI_PARTITION)
246 puts ("\nPartition Map for ");
247 switch (dev_desc
->if_type
) {
279 printf (" device %d -- Partition Type: %s\n\n",
280 dev_desc
->devnum
, type
);
281 #endif /* any CONFIG_..._PARTITION */
284 void part_print(struct blk_desc
*dev_desc
)
286 struct part_driver
*drv
;
288 drv
= part_driver_lookup_type(dev_desc
->part_type
);
290 printf("## Unknown partition table type %x\n",
291 dev_desc
->part_type
);
295 PRINTF("## Testing for valid %s partition ##\n", drv
->name
);
296 print_part_header(drv
->name
, dev_desc
);
298 drv
->print(dev_desc
);
301 #endif /* HAVE_BLOCK_DEVICE */
303 int part_get_info(struct blk_desc
*dev_desc
, int part
,
304 disk_partition_t
*info
)
306 #ifdef HAVE_BLOCK_DEVICE
307 struct part_driver
*drv
;
309 #if CONFIG_IS_ENABLED(PARTITION_UUIDS)
310 /* The common case is no UUID support */
313 #ifdef CONFIG_PARTITION_TYPE_GUID
314 info
->type_guid
[0] = 0;
317 drv
= part_driver_lookup_type(dev_desc
->part_type
);
319 debug("## Unknown partition table type %x\n",
320 dev_desc
->part_type
);
321 return -EPROTONOSUPPORT
;
323 if (!drv
->get_info
) {
324 PRINTF("## Driver %s does not have the get_info() method\n",
328 if (drv
->get_info(dev_desc
, part
, info
) == 0) {
329 PRINTF("## Valid %s partition found ##\n", drv
->name
);
332 #endif /* HAVE_BLOCK_DEVICE */
337 int part_get_info_whole_disk(struct blk_desc
*dev_desc
, disk_partition_t
*info
)
340 info
->size
= dev_desc
->lba
;
341 info
->blksz
= dev_desc
->blksz
;
343 strcpy((char *)info
->type
, BOOT_PART_TYPE
);
344 strcpy((char *)info
->name
, "Whole Disk");
345 #if CONFIG_IS_ENABLED(PARTITION_UUIDS)
348 #ifdef CONFIG_PARTITION_TYPE_GUID
349 info
->type_guid
[0] = 0;
355 int blk_get_device_by_str(const char *ifname
, const char *dev_hwpart_str
,
356 struct blk_desc
**dev_desc
)
359 char *dup_str
= NULL
;
360 const char *dev_str
, *hwpart_str
;
363 hwpart_str
= strchr(dev_hwpart_str
, '.');
365 dup_str
= strdup(dev_hwpart_str
);
366 dup_str
[hwpart_str
- dev_hwpart_str
] = 0;
370 dev_str
= dev_hwpart_str
;
374 dev
= simple_strtoul(dev_str
, &ep
, 16);
376 printf("** Bad device specification %s %s **\n",
383 hwpart
= simple_strtoul(hwpart_str
, &ep
, 16);
385 printf("** Bad HW partition specification %s %s **\n",
392 *dev_desc
= get_dev_hwpart(ifname
, dev
, hwpart
);
393 if (!(*dev_desc
) || ((*dev_desc
)->type
== DEV_TYPE_UNKNOWN
)) {
394 printf("** Bad device %s %s **\n", ifname
, dev_hwpart_str
);
399 #ifdef HAVE_BLOCK_DEVICE
401 * Updates the partition table for the specified hw partition.
402 * Does not need to be done for hwpart 0 since it is default and
406 part_init(*dev_desc
);
414 #define PART_UNSPECIFIED -2
416 int blk_get_device_part_str(const char *ifname
, const char *dev_part_str
,
417 struct blk_desc
**dev_desc
,
418 disk_partition_t
*info
, int allow_whole_dev
)
421 const char *part_str
;
422 char *dup_str
= NULL
;
428 disk_partition_t tmpinfo
;
430 #ifdef CONFIG_SANDBOX
432 * Special-case a pseudo block device "hostfs", to allow access to the
433 * host's own filesystem.
435 if (0 == strcmp(ifname
, "hostfs")) {
441 strcpy((char *)info
->type
, BOOT_PART_TYPE
);
442 strcpy((char *)info
->name
, "Sandbox host");
443 #if CONFIG_IS_ENABLED(PARTITION_UUIDS)
446 #ifdef CONFIG_PARTITION_TYPE_GUID
447 info
->type_guid
[0] = 0;
454 #ifdef CONFIG_CMD_UBIFS
456 * Special-case ubi, ubi goes through a mtd, rathen then through
457 * a regular block device.
459 if (0 == strcmp(ifname
, "ubi")) {
460 if (!ubifs_is_mounted()) {
461 printf("UBIFS not mounted, use ubifsmount to mount volume first!\n");
466 memset(info
, 0, sizeof(*info
));
467 strcpy((char *)info
->type
, BOOT_PART_TYPE
);
468 strcpy((char *)info
->name
, "UBI");
469 #if CONFIG_IS_ENABLED(PARTITION_UUIDS)
476 /* If no dev_part_str, use bootdevice environment variable */
477 if (!dev_part_str
|| !strlen(dev_part_str
) ||
478 !strcmp(dev_part_str
, "-"))
479 dev_part_str
= env_get("bootdevice");
481 /* If still no dev_part_str, it's an error */
483 printf("** No device specified **\n");
487 /* Separate device and partition ID specification */
488 part_str
= strchr(dev_part_str
, ':');
490 dup_str
= strdup(dev_part_str
);
491 dup_str
[part_str
- dev_part_str
] = 0;
495 dev_str
= dev_part_str
;
498 /* Look up the device */
499 dev
= blk_get_device_by_str(ifname
, dev_str
, dev_desc
);
503 /* Convert partition ID string to number */
504 if (!part_str
|| !*part_str
) {
505 part
= PART_UNSPECIFIED
;
506 } else if (!strcmp(part_str
, "auto")) {
509 /* Something specified -> use exactly that */
510 part
= (int)simple_strtoul(part_str
, &ep
, 16);
512 * Less than whole string converted,
513 * or request for whole device, but caller requires partition.
515 if (*ep
|| (part
== 0 && !allow_whole_dev
)) {
516 printf("** Bad partition specification %s %s **\n",
517 ifname
, dev_part_str
);
523 * No partition table on device,
524 * or user requested partition 0 (entire device).
526 if (((*dev_desc
)->part_type
== PART_TYPE_UNKNOWN
) ||
528 if (!(*dev_desc
)->lba
) {
529 printf("** Bad device size - %s %s **\n", ifname
,
535 * If user specified a partition ID other than 0,
536 * or the calling command only accepts partitions,
539 if ((part
> 0) || (!allow_whole_dev
)) {
540 printf("** No partition table - %s %s **\n", ifname
,
545 (*dev_desc
)->log2blksz
= LOG2((*dev_desc
)->blksz
);
547 part_get_info_whole_disk(*dev_desc
, info
);
554 * Now there's known to be a partition table,
555 * not specifying a partition means to pick partition 1.
557 if (part
== PART_UNSPECIFIED
)
561 * If user didn't specify a partition number, or did specify something
562 * other than "auto", use that partition number directly.
564 if (part
!= PART_AUTO
) {
565 ret
= part_get_info(*dev_desc
, part
, info
);
567 printf("** Invalid partition %d **\n", part
);
572 * Find the first bootable partition.
573 * If none are bootable, fall back to the first valid partition.
576 for (p
= 1; p
<= MAX_SEARCH_PARTITIONS
; p
++) {
577 ret
= part_get_info(*dev_desc
, p
, info
);
582 * First valid partition, or new better partition?
583 * If so, save partition ID.
585 if (!part
|| info
->bootable
)
588 /* Best possible partition? Stop searching. */
593 * We now need to search further for best possible.
594 * If we what we just queried was the best so far,
595 * save the info since we over-write it next loop.
600 /* If we found any acceptable partition */
603 * If we searched all possible partition IDs,
604 * return the first valid partition we found.
606 if (p
== MAX_SEARCH_PARTITIONS
+ 1)
609 printf("** No valid partitions found **\n");
614 if (strncmp((char *)info
->type
, BOOT_PART_TYPE
, sizeof(info
->type
)) != 0) {
615 printf("** Invalid partition type \"%.32s\""
616 " (expect \"" BOOT_PART_TYPE
"\")\n",
622 (*dev_desc
)->log2blksz
= LOG2((*dev_desc
)->blksz
);
632 int part_get_info_by_name_type(struct blk_desc
*dev_desc
, const char *name
,
633 disk_partition_t
*info
, int part_type
)
635 struct part_driver
*first_drv
=
636 ll_entry_start(struct part_driver
, part_driver
);
637 const int n_drvs
= ll_entry_count(struct part_driver
, part_driver
);
638 struct part_driver
*part_drv
;
640 for (part_drv
= first_drv
; part_drv
!= first_drv
+ n_drvs
; part_drv
++) {
643 for (i
= 1; i
< part_drv
->max_entries
; i
++) {
644 if (part_type
>= 0 && part_type
!= part_drv
->part_type
)
646 ret
= part_drv
->get_info(dev_desc
, i
, info
);
648 /* no more entries in table */
651 if (strcmp(name
, (const char *)info
->name
) == 0) {
660 int part_get_info_by_name(struct blk_desc
*dev_desc
, const char *name
,
661 disk_partition_t
*info
)
663 return part_get_info_by_name_type(dev_desc
, name
, info
, PART_TYPE_ALL
);
666 void part_set_generic_name(const struct blk_desc
*dev_desc
,
667 int part_num
, char *name
)
671 switch (dev_desc
->if_type
) {
695 sprintf(name
, "%s%c%d", devtype
, 'a' + dev_desc
->devnum
, part_num
);