]>
git.ipfire.org Git - thirdparty/u-boot.git/blob - disk/part.c
1 // SPDX-License-Identifier: GPL-2.0+
4 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
13 #include <ubifs_uboot.h>
18 #define PRINTF(fmt,args...) printf (fmt ,##args)
20 #define PRINTF(fmt,args...)
23 /* Check all partition types */
24 #define PART_TYPE_ALL -1
26 static struct part_driver
*part_driver_lookup_type(struct blk_desc
*dev_desc
)
28 struct part_driver
*drv
=
29 ll_entry_start(struct part_driver
, part_driver
);
30 const int n_ents
= ll_entry_count(struct part_driver
, part_driver
);
31 struct part_driver
*entry
;
33 if (dev_desc
->part_type
== PART_TYPE_UNKNOWN
) {
34 for (entry
= drv
; entry
!= drv
+ n_ents
; entry
++) {
37 ret
= entry
->test(dev_desc
);
39 dev_desc
->part_type
= entry
->part_type
;
44 for (entry
= drv
; entry
!= drv
+ n_ents
; entry
++) {
45 if (dev_desc
->part_type
== entry
->part_type
)
54 #ifdef CONFIG_HAVE_BLOCK_DEVICE
55 static struct blk_desc
*get_dev_hwpart(const char *ifname
, int dev
, int hwpart
)
57 struct blk_desc
*dev_desc
;
60 dev_desc
= blk_get_devnum_by_typename(ifname
, dev
);
62 debug("%s: No device for iface '%s', dev %d\n", __func__
,
66 ret
= blk_dselect_hwpart(dev_desc
, hwpart
);
68 debug("%s: Failed to select h/w partition: err-%d\n", __func__
,
76 struct blk_desc
*blk_get_dev(const char *ifname
, int dev
)
78 return get_dev_hwpart(ifname
, dev
, 0);
81 struct blk_desc
*get_dev_hwpart(const char *ifname
, int dev
, int hwpart
)
86 struct blk_desc
*blk_get_dev(const char *ifname
, int dev
)
92 #ifdef CONFIG_HAVE_BLOCK_DEVICE
94 /* ------------------------------------------------------------------------- */
96 * reports device info to the user
100 typedef uint64_t lba512_t
;
102 typedef lbaint_t lba512_t
;
106 * Overflowless variant of (block_count * mul_by / 2**div_by)
107 * when div_by > mul_by
109 static lba512_t
lba512_muldiv(lba512_t block_count
, lba512_t mul_by
, int div_by
)
111 lba512_t bc_quot
, bc_rem
;
113 /* x * m / d == x / d * m + (x % d) * m / d */
114 bc_quot
= block_count
>> div_by
;
115 bc_rem
= block_count
- (bc_quot
<< div_by
);
116 return bc_quot
* mul_by
+ ((bc_rem
* mul_by
) >> div_by
);
119 void dev_print (struct blk_desc
*dev_desc
)
121 lba512_t lba512
; /* number of blocks if 512bytes block size */
123 if (dev_desc
->type
== DEV_TYPE_UNKNOWN
) {
124 puts ("not available\n");
128 switch (dev_desc
->if_type
) {
130 printf ("(%d:%d) Vendor: %s Prod.: %s Rev: %s\n",
131 dev_desc
->target
,dev_desc
->lun
,
139 printf ("Model: %s Firm: %s Ser#: %s\n",
148 printf ("Vendor: %s Rev: %s Prod: %s\n",
154 printf("%s VirtIO Block Device\n", dev_desc
->vendor
);
157 puts("device type DOC\n");
159 case IF_TYPE_UNKNOWN
:
160 puts("device type unknown\n");
163 printf("Unhandled device type: %i\n", dev_desc
->if_type
);
167 if (dev_desc
->removable
)
169 switch (dev_desc
->type
& 0x1F) {
170 case DEV_TYPE_HARDDISK
:
176 case DEV_TYPE_OPDISK
:
177 puts ("Optical Device");
183 printf ("# %02X #", dev_desc
->type
& 0x1F);
187 if (dev_desc
->lba
> 0L && dev_desc
->blksz
> 0L) {
188 ulong mb
, mb_quot
, mb_rem
, gb
, gb_quot
, gb_rem
;
193 lba512
= (lba
* (dev_desc
->blksz
/512));
194 /* round to 1 digit */
195 /* 2048 = (1024 * 1024) / 512 MB */
196 mb
= lba512_muldiv(lba512
, 10, 11);
199 mb_rem
= mb
- (10 * mb_quot
);
203 gb_rem
= gb
- (10 * gb_quot
);
206 printf (" Supports 48-bit addressing\n");
208 #if defined(CONFIG_SYS_64BIT_LBA)
209 printf (" Capacity: %lu.%lu MB = %lu.%lu GB (%llu x %lu)\n",
215 printf (" Capacity: %lu.%lu MB = %lu.%lu GB (%lu x %lu)\n",
222 puts (" Capacity: not available\n");
227 #ifdef CONFIG_HAVE_BLOCK_DEVICE
229 void part_init(struct blk_desc
*dev_desc
)
231 struct part_driver
*drv
=
232 ll_entry_start(struct part_driver
, part_driver
);
233 const int n_ents
= ll_entry_count(struct part_driver
, part_driver
);
234 struct part_driver
*entry
;
236 blkcache_invalidate(dev_desc
->if_type
, dev_desc
->devnum
);
238 dev_desc
->part_type
= PART_TYPE_UNKNOWN
;
239 for (entry
= drv
; entry
!= drv
+ n_ents
; entry
++) {
242 ret
= entry
->test(dev_desc
);
243 debug("%s: try '%s': ret=%d\n", __func__
, entry
->name
, ret
);
245 dev_desc
->part_type
= entry
->part_type
;
251 static void print_part_header(const char *type
, struct blk_desc
*dev_desc
)
253 #if CONFIG_IS_ENABLED(MAC_PARTITION) || \
254 CONFIG_IS_ENABLED(DOS_PARTITION) || \
255 CONFIG_IS_ENABLED(ISO_PARTITION) || \
256 CONFIG_IS_ENABLED(AMIGA_PARTITION) || \
257 CONFIG_IS_ENABLED(EFI_PARTITION)
258 puts ("\nPartition Map for ");
259 switch (dev_desc
->if_type
) {
294 printf (" device %d -- Partition Type: %s\n\n",
295 dev_desc
->devnum
, type
);
296 #endif /* any CONFIG_..._PARTITION */
299 void part_print(struct blk_desc
*dev_desc
)
301 struct part_driver
*drv
;
303 drv
= part_driver_lookup_type(dev_desc
);
305 printf("## Unknown partition table type %x\n",
306 dev_desc
->part_type
);
310 PRINTF("## Testing for valid %s partition ##\n", drv
->name
);
311 print_part_header(drv
->name
, dev_desc
);
313 drv
->print(dev_desc
);
316 #endif /* CONFIG_HAVE_BLOCK_DEVICE */
318 int part_get_info(struct blk_desc
*dev_desc
, int part
,
319 disk_partition_t
*info
)
321 #ifdef CONFIG_HAVE_BLOCK_DEVICE
322 struct part_driver
*drv
;
324 #if CONFIG_IS_ENABLED(PARTITION_UUIDS)
325 /* The common case is no UUID support */
328 #ifdef CONFIG_PARTITION_TYPE_GUID
329 info
->type_guid
[0] = 0;
332 drv
= part_driver_lookup_type(dev_desc
);
334 debug("## Unknown partition table type %x\n",
335 dev_desc
->part_type
);
336 return -EPROTONOSUPPORT
;
338 if (!drv
->get_info
) {
339 PRINTF("## Driver %s does not have the get_info() method\n",
343 if (drv
->get_info(dev_desc
, part
, info
) == 0) {
344 PRINTF("## Valid %s partition found ##\n", drv
->name
);
347 #endif /* CONFIG_HAVE_BLOCK_DEVICE */
352 int part_get_info_whole_disk(struct blk_desc
*dev_desc
, disk_partition_t
*info
)
355 info
->size
= dev_desc
->lba
;
356 info
->blksz
= dev_desc
->blksz
;
358 strcpy((char *)info
->type
, BOOT_PART_TYPE
);
359 strcpy((char *)info
->name
, "Whole Disk");
360 #if CONFIG_IS_ENABLED(PARTITION_UUIDS)
363 #ifdef CONFIG_PARTITION_TYPE_GUID
364 info
->type_guid
[0] = 0;
370 int blk_get_device_by_str(const char *ifname
, const char *dev_hwpart_str
,
371 struct blk_desc
**dev_desc
)
374 char *dup_str
= NULL
;
375 const char *dev_str
, *hwpart_str
;
378 hwpart_str
= strchr(dev_hwpart_str
, '.');
380 dup_str
= strdup(dev_hwpart_str
);
381 dup_str
[hwpart_str
- dev_hwpart_str
] = 0;
385 dev_str
= dev_hwpart_str
;
389 dev
= simple_strtoul(dev_str
, &ep
, 16);
391 printf("** Bad device specification %s %s **\n",
398 hwpart
= simple_strtoul(hwpart_str
, &ep
, 16);
400 printf("** Bad HW partition specification %s %s **\n",
407 *dev_desc
= get_dev_hwpart(ifname
, dev
, hwpart
);
408 if (!(*dev_desc
) || ((*dev_desc
)->type
== DEV_TYPE_UNKNOWN
)) {
409 debug("** Bad device %s %s **\n", ifname
, dev_hwpart_str
);
414 #ifdef CONFIG_HAVE_BLOCK_DEVICE
416 * Updates the partition table for the specified hw partition.
417 * Does not need to be done for hwpart 0 since it is default and
421 part_init(*dev_desc
);
429 #define PART_UNSPECIFIED -2
431 int blk_get_device_part_str(const char *ifname
, const char *dev_part_str
,
432 struct blk_desc
**dev_desc
,
433 disk_partition_t
*info
, int allow_whole_dev
)
436 const char *part_str
;
437 char *dup_str
= NULL
;
443 disk_partition_t tmpinfo
;
445 #ifdef CONFIG_SANDBOX
447 * Special-case a pseudo block device "hostfs", to allow access to the
448 * host's own filesystem.
450 if (0 == strcmp(ifname
, "hostfs")) {
456 strcpy((char *)info
->type
, BOOT_PART_TYPE
);
457 strcpy((char *)info
->name
, "Sandbox host");
458 #if CONFIG_IS_ENABLED(PARTITION_UUIDS)
461 #ifdef CONFIG_PARTITION_TYPE_GUID
462 info
->type_guid
[0] = 0;
469 #ifdef CONFIG_CMD_UBIFS
471 * Special-case ubi, ubi goes through a mtd, rather than through
472 * a regular block device.
474 if (0 == strcmp(ifname
, "ubi")) {
475 if (!ubifs_is_mounted()) {
476 printf("UBIFS not mounted, use ubifsmount to mount volume first!\n");
481 memset(info
, 0, sizeof(*info
));
482 strcpy((char *)info
->type
, BOOT_PART_TYPE
);
483 strcpy((char *)info
->name
, "UBI");
484 #if CONFIG_IS_ENABLED(PARTITION_UUIDS)
491 /* If no dev_part_str, use bootdevice environment variable */
492 if (!dev_part_str
|| !strlen(dev_part_str
) ||
493 !strcmp(dev_part_str
, "-"))
494 dev_part_str
= env_get("bootdevice");
496 /* If still no dev_part_str, it's an error */
498 printf("** No device specified **\n");
502 /* Separate device and partition ID specification */
503 part_str
= strchr(dev_part_str
, ':');
505 dup_str
= strdup(dev_part_str
);
506 dup_str
[part_str
- dev_part_str
] = 0;
510 dev_str
= dev_part_str
;
513 /* Look up the device */
514 dev
= blk_get_device_by_str(ifname
, dev_str
, dev_desc
);
518 /* Convert partition ID string to number */
519 if (!part_str
|| !*part_str
) {
520 part
= PART_UNSPECIFIED
;
521 } else if (!strcmp(part_str
, "auto")) {
524 /* Something specified -> use exactly that */
525 part
= (int)simple_strtoul(part_str
, &ep
, 16);
527 * Less than whole string converted,
528 * or request for whole device, but caller requires partition.
530 if (*ep
|| (part
== 0 && !allow_whole_dev
)) {
531 printf("** Bad partition specification %s %s **\n",
532 ifname
, dev_part_str
);
538 * No partition table on device,
539 * or user requested partition 0 (entire device).
541 if (((*dev_desc
)->part_type
== PART_TYPE_UNKNOWN
) ||
543 if (!(*dev_desc
)->lba
) {
544 printf("** Bad device size - %s %s **\n", ifname
,
550 * If user specified a partition ID other than 0,
551 * or the calling command only accepts partitions,
554 if ((part
> 0) || (!allow_whole_dev
)) {
555 printf("** No partition table - %s %s **\n", ifname
,
560 (*dev_desc
)->log2blksz
= LOG2((*dev_desc
)->blksz
);
562 part_get_info_whole_disk(*dev_desc
, info
);
569 * Now there's known to be a partition table,
570 * not specifying a partition means to pick partition 1.
572 if (part
== PART_UNSPECIFIED
)
576 * If user didn't specify a partition number, or did specify something
577 * other than "auto", use that partition number directly.
579 if (part
!= PART_AUTO
) {
580 ret
= part_get_info(*dev_desc
, part
, info
);
582 printf("** Invalid partition %d **\n", part
);
587 * Find the first bootable partition.
588 * If none are bootable, fall back to the first valid partition.
591 for (p
= 1; p
<= MAX_SEARCH_PARTITIONS
; p
++) {
592 ret
= part_get_info(*dev_desc
, p
, info
);
597 * First valid partition, or new better partition?
598 * If so, save partition ID.
600 if (!part
|| info
->bootable
)
603 /* Best possible partition? Stop searching. */
608 * We now need to search further for best possible.
609 * If we what we just queried was the best so far,
610 * save the info since we over-write it next loop.
615 /* If we found any acceptable partition */
618 * If we searched all possible partition IDs,
619 * return the first valid partition we found.
621 if (p
== MAX_SEARCH_PARTITIONS
+ 1)
624 printf("** No valid partitions found **\n");
629 if (strncmp((char *)info
->type
, BOOT_PART_TYPE
, sizeof(info
->type
)) != 0) {
630 printf("** Invalid partition type \"%.32s\""
631 " (expect \"" BOOT_PART_TYPE
"\")\n",
637 (*dev_desc
)->log2blksz
= LOG2((*dev_desc
)->blksz
);
647 int part_get_info_by_name_type(struct blk_desc
*dev_desc
, const char *name
,
648 disk_partition_t
*info
, int part_type
)
650 struct part_driver
*part_drv
;
654 part_drv
= part_driver_lookup_type(dev_desc
);
657 for (i
= 1; i
< part_drv
->max_entries
; i
++) {
658 ret
= part_drv
->get_info(dev_desc
, i
, info
);
660 /* no more entries in table */
663 if (strcmp(name
, (const char *)info
->name
) == 0) {
672 int part_get_info_by_name(struct blk_desc
*dev_desc
, const char *name
,
673 disk_partition_t
*info
)
675 return part_get_info_by_name_type(dev_desc
, name
, info
, PART_TYPE_ALL
);
678 void part_set_generic_name(const struct blk_desc
*dev_desc
,
679 int part_num
, char *name
)
683 switch (dev_desc
->if_type
) {
707 sprintf(name
, "%s%c%d", devtype
, 'a' + dev_desc
->devnum
, part_num
);