]>
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.
16 #include <ubifs_uboot.h>
21 #define PRINTF(fmt,args...) printf (fmt ,##args)
23 #define PRINTF(fmt,args...)
26 /* Check all partition types */
27 #define PART_TYPE_ALL -1
29 static struct part_driver
*part_driver_lookup_type(struct blk_desc
*dev_desc
)
31 struct part_driver
*drv
=
32 ll_entry_start(struct part_driver
, part_driver
);
33 const int n_ents
= ll_entry_count(struct part_driver
, part_driver
);
34 struct part_driver
*entry
;
36 if (dev_desc
->part_type
== PART_TYPE_UNKNOWN
) {
37 for (entry
= drv
; entry
!= drv
+ n_ents
; entry
++) {
40 ret
= entry
->test(dev_desc
);
42 dev_desc
->part_type
= entry
->part_type
;
47 for (entry
= drv
; entry
!= drv
+ n_ents
; entry
++) {
48 if (dev_desc
->part_type
== entry
->part_type
)
57 #ifdef CONFIG_HAVE_BLOCK_DEVICE
58 static struct blk_desc
*get_dev_hwpart(const char *ifname
, int dev
, int hwpart
)
60 struct blk_desc
*dev_desc
;
63 dev_desc
= blk_get_devnum_by_typename(ifname
, dev
);
65 debug("%s: No device for iface '%s', dev %d\n", __func__
,
69 ret
= blk_dselect_hwpart(dev_desc
, hwpart
);
71 debug("%s: Failed to select h/w partition: err-%d\n", __func__
,
79 struct blk_desc
*blk_get_dev(const char *ifname
, int dev
)
81 return get_dev_hwpart(ifname
, dev
, 0);
84 struct blk_desc
*get_dev_hwpart(const char *ifname
, int dev
, int hwpart
)
89 struct blk_desc
*blk_get_dev(const char *ifname
, int dev
)
95 #ifdef CONFIG_HAVE_BLOCK_DEVICE
97 /* ------------------------------------------------------------------------- */
99 * reports device info to the user
103 typedef uint64_t lba512_t
;
105 typedef lbaint_t lba512_t
;
109 * Overflowless variant of (block_count * mul_by / 2**right_shift)
110 * when 2**right_shift > mul_by
112 static lba512_t
lba512_muldiv(lba512_t block_count
, lba512_t mul_by
,
115 lba512_t bc_quot
, bc_rem
;
117 /* x * m / d == x / d * m + (x % d) * m / d */
118 bc_quot
= block_count
>> right_shift
;
119 bc_rem
= block_count
- (bc_quot
<< right_shift
);
120 return bc_quot
* mul_by
+ ((bc_rem
* mul_by
) >> right_shift
);
123 void dev_print (struct blk_desc
*dev_desc
)
125 lba512_t lba512
; /* number of blocks if 512bytes block size */
127 if (dev_desc
->type
== DEV_TYPE_UNKNOWN
) {
128 puts ("not available\n");
132 switch (dev_desc
->if_type
) {
134 printf ("(%d:%d) Vendor: %s Prod.: %s Rev: %s\n",
135 dev_desc
->target
,dev_desc
->lun
,
143 printf ("Model: %s Firm: %s Ser#: %s\n",
152 printf ("Vendor: %s Rev: %s Prod: %s\n",
158 printf("%s VirtIO Block Device\n", dev_desc
->vendor
);
161 puts("device type DOC\n");
163 case IF_TYPE_UNKNOWN
:
164 puts("device type unknown\n");
167 printf("Unhandled device type: %i\n", dev_desc
->if_type
);
171 if (dev_desc
->removable
)
173 switch (dev_desc
->type
& 0x1F) {
174 case DEV_TYPE_HARDDISK
:
180 case DEV_TYPE_OPDISK
:
181 puts ("Optical Device");
187 printf ("# %02X #", dev_desc
->type
& 0x1F);
191 if (dev_desc
->lba
> 0L && dev_desc
->blksz
> 0L) {
192 ulong mb
, mb_quot
, mb_rem
, gb
, gb_quot
, gb_rem
;
197 lba512
= (lba
* (dev_desc
->blksz
/512));
198 /* round to 1 digit */
199 /* 2048 = (1024 * 1024) / 512 MB */
200 mb
= lba512_muldiv(lba512
, 10, 11);
203 mb_rem
= mb
- (10 * mb_quot
);
207 gb_rem
= gb
- (10 * gb_quot
);
210 printf (" Supports 48-bit addressing\n");
212 #if defined(CONFIG_SYS_64BIT_LBA)
213 printf (" Capacity: %lu.%lu MB = %lu.%lu GB (%llu x %lu)\n",
219 printf (" Capacity: %lu.%lu MB = %lu.%lu GB (%lu x %lu)\n",
226 puts (" Capacity: not available\n");
231 #ifdef CONFIG_HAVE_BLOCK_DEVICE
233 void part_init(struct blk_desc
*dev_desc
)
235 struct part_driver
*drv
=
236 ll_entry_start(struct part_driver
, part_driver
);
237 const int n_ents
= ll_entry_count(struct part_driver
, part_driver
);
238 struct part_driver
*entry
;
240 blkcache_invalidate(dev_desc
->if_type
, dev_desc
->devnum
);
242 dev_desc
->part_type
= PART_TYPE_UNKNOWN
;
243 for (entry
= drv
; entry
!= drv
+ n_ents
; entry
++) {
246 ret
= entry
->test(dev_desc
);
247 debug("%s: try '%s': ret=%d\n", __func__
, entry
->name
, ret
);
249 dev_desc
->part_type
= entry
->part_type
;
255 static void print_part_header(const char *type
, struct blk_desc
*dev_desc
)
257 #if CONFIG_IS_ENABLED(MAC_PARTITION) || \
258 CONFIG_IS_ENABLED(DOS_PARTITION) || \
259 CONFIG_IS_ENABLED(ISO_PARTITION) || \
260 CONFIG_IS_ENABLED(AMIGA_PARTITION) || \
261 CONFIG_IS_ENABLED(EFI_PARTITION)
262 puts ("\nPartition Map for ");
263 switch (dev_desc
->if_type
) {
298 printf (" device %d -- Partition Type: %s\n\n",
299 dev_desc
->devnum
, type
);
300 #endif /* any CONFIG_..._PARTITION */
303 void part_print(struct blk_desc
*dev_desc
)
305 struct part_driver
*drv
;
307 drv
= part_driver_lookup_type(dev_desc
);
309 printf("## Unknown partition table type %x\n",
310 dev_desc
->part_type
);
314 PRINTF("## Testing for valid %s partition ##\n", drv
->name
);
315 print_part_header(drv
->name
, dev_desc
);
317 drv
->print(dev_desc
);
320 #endif /* CONFIG_HAVE_BLOCK_DEVICE */
322 int part_get_info(struct blk_desc
*dev_desc
, int part
,
323 struct disk_partition
*info
)
325 #ifdef CONFIG_HAVE_BLOCK_DEVICE
326 struct part_driver
*drv
;
328 #if CONFIG_IS_ENABLED(PARTITION_UUIDS)
329 /* The common case is no UUID support */
332 #ifdef CONFIG_PARTITION_TYPE_GUID
333 info
->type_guid
[0] = 0;
336 drv
= part_driver_lookup_type(dev_desc
);
338 debug("## Unknown partition table type %x\n",
339 dev_desc
->part_type
);
340 return -EPROTONOSUPPORT
;
342 if (!drv
->get_info
) {
343 PRINTF("## Driver %s does not have the get_info() method\n",
347 if (drv
->get_info(dev_desc
, part
, info
) == 0) {
348 PRINTF("## Valid %s partition found ##\n", drv
->name
);
351 #endif /* CONFIG_HAVE_BLOCK_DEVICE */
356 int part_get_info_whole_disk(struct blk_desc
*dev_desc
,
357 struct disk_partition
*info
)
360 info
->size
= dev_desc
->lba
;
361 info
->blksz
= dev_desc
->blksz
;
363 strcpy((char *)info
->type
, BOOT_PART_TYPE
);
364 strcpy((char *)info
->name
, "Whole Disk");
365 #if CONFIG_IS_ENABLED(PARTITION_UUIDS)
368 #ifdef CONFIG_PARTITION_TYPE_GUID
369 info
->type_guid
[0] = 0;
375 int blk_get_device_by_str(const char *ifname
, const char *dev_hwpart_str
,
376 struct blk_desc
**dev_desc
)
379 char *dup_str
= NULL
;
380 const char *dev_str
, *hwpart_str
;
383 hwpart_str
= strchr(dev_hwpart_str
, '.');
385 dup_str
= strdup(dev_hwpart_str
);
386 dup_str
[hwpart_str
- dev_hwpart_str
] = 0;
390 dev_str
= dev_hwpart_str
;
394 dev
= simple_strtoul(dev_str
, &ep
, 16);
396 printf("** Bad device specification %s %s **\n",
403 hwpart
= simple_strtoul(hwpart_str
, &ep
, 16);
405 printf("** Bad HW partition specification %s %s **\n",
412 *dev_desc
= get_dev_hwpart(ifname
, dev
, hwpart
);
413 if (!(*dev_desc
) || ((*dev_desc
)->type
== DEV_TYPE_UNKNOWN
)) {
414 debug("** Bad device %s %s **\n", ifname
, dev_hwpart_str
);
419 #ifdef CONFIG_HAVE_BLOCK_DEVICE
421 * Updates the partition table for the specified hw partition.
422 * Always should be done, otherwise hw partition 0 will return stale
423 * data after displaying a non-zero hw partition.
425 part_init(*dev_desc
);
433 #define PART_UNSPECIFIED -2
435 int blk_get_device_part_str(const char *ifname
, const char *dev_part_str
,
436 struct blk_desc
**dev_desc
,
437 struct disk_partition
*info
, int allow_whole_dev
)
440 const char *part_str
;
441 char *dup_str
= NULL
;
447 struct disk_partition tmpinfo
;
449 #ifdef CONFIG_SANDBOX
451 * Special-case a pseudo block device "hostfs", to allow access to the
452 * host's own filesystem.
454 if (0 == strcmp(ifname
, "hostfs")) {
460 strcpy((char *)info
->type
, BOOT_PART_TYPE
);
461 strcpy((char *)info
->name
, "Sandbox host");
462 #if CONFIG_IS_ENABLED(PARTITION_UUIDS)
465 #ifdef CONFIG_PARTITION_TYPE_GUID
466 info
->type_guid
[0] = 0;
473 #ifdef CONFIG_CMD_UBIFS
475 * Special-case ubi, ubi goes through a mtd, rather than through
476 * a regular block device.
478 if (0 == strcmp(ifname
, "ubi")) {
479 if (!ubifs_is_mounted()) {
480 printf("UBIFS not mounted, use ubifsmount to mount volume first!\n");
485 memset(info
, 0, sizeof(*info
));
486 strcpy((char *)info
->type
, BOOT_PART_TYPE
);
487 strcpy((char *)info
->name
, "UBI");
488 #if CONFIG_IS_ENABLED(PARTITION_UUIDS)
495 /* If no dev_part_str, use bootdevice environment variable */
496 if (!dev_part_str
|| !strlen(dev_part_str
) ||
497 !strcmp(dev_part_str
, "-"))
498 dev_part_str
= env_get("bootdevice");
500 /* If still no dev_part_str, it's an error */
502 printf("** No device specified **\n");
506 /* Separate device and partition ID specification */
507 part_str
= strchr(dev_part_str
, ':');
509 dup_str
= strdup(dev_part_str
);
510 dup_str
[part_str
- dev_part_str
] = 0;
514 dev_str
= dev_part_str
;
517 /* Look up the device */
518 dev
= blk_get_device_by_str(ifname
, dev_str
, dev_desc
);
522 /* Convert partition ID string to number */
523 if (!part_str
|| !*part_str
) {
524 part
= PART_UNSPECIFIED
;
525 } else if (!strcmp(part_str
, "auto")) {
528 /* Something specified -> use exactly that */
529 part
= (int)simple_strtoul(part_str
, &ep
, 16);
531 * Less than whole string converted,
532 * or request for whole device, but caller requires partition.
534 if (*ep
|| (part
== 0 && !allow_whole_dev
)) {
535 printf("** Bad partition specification %s %s **\n",
536 ifname
, dev_part_str
);
542 * No partition table on device,
543 * or user requested partition 0 (entire device).
545 if (((*dev_desc
)->part_type
== PART_TYPE_UNKNOWN
) ||
547 if (!(*dev_desc
)->lba
) {
548 printf("** Bad device size - %s %s **\n", ifname
,
554 * If user specified a partition ID other than 0,
555 * or the calling command only accepts partitions,
558 if ((part
> 0) || (!allow_whole_dev
)) {
559 printf("** No partition table - %s %s **\n", ifname
,
564 (*dev_desc
)->log2blksz
= LOG2((*dev_desc
)->blksz
);
566 part_get_info_whole_disk(*dev_desc
, info
);
573 * Now there's known to be a partition table,
574 * not specifying a partition means to pick partition 1.
576 if (part
== PART_UNSPECIFIED
)
580 * If user didn't specify a partition number, or did specify something
581 * other than "auto", use that partition number directly.
583 if (part
!= PART_AUTO
) {
584 ret
= part_get_info(*dev_desc
, part
, info
);
586 printf("** Invalid partition %d **\n", part
);
591 * Find the first bootable partition.
592 * If none are bootable, fall back to the first valid partition.
595 for (p
= 1; p
<= MAX_SEARCH_PARTITIONS
; p
++) {
596 ret
= part_get_info(*dev_desc
, p
, info
);
601 * First valid partition, or new better partition?
602 * If so, save partition ID.
604 if (!part
|| info
->bootable
)
607 /* Best possible partition? Stop searching. */
612 * We now need to search further for best possible.
613 * If we what we just queried was the best so far,
614 * save the info since we over-write it next loop.
619 /* If we found any acceptable partition */
622 * If we searched all possible partition IDs,
623 * return the first valid partition we found.
625 if (p
== MAX_SEARCH_PARTITIONS
+ 1)
628 printf("** No valid partitions found **\n");
633 if (strncmp((char *)info
->type
, BOOT_PART_TYPE
, sizeof(info
->type
)) != 0) {
634 printf("** Invalid partition type \"%.32s\""
635 " (expect \"" BOOT_PART_TYPE
"\")\n",
641 (*dev_desc
)->log2blksz
= LOG2((*dev_desc
)->blksz
);
651 int part_get_info_by_name_type(struct blk_desc
*dev_desc
, const char *name
,
652 struct disk_partition
*info
, int part_type
)
654 struct part_driver
*part_drv
;
658 part_drv
= part_driver_lookup_type(dev_desc
);
661 for (i
= 1; i
< part_drv
->max_entries
; i
++) {
662 ret
= part_drv
->get_info(dev_desc
, i
, info
);
664 /* no more entries in table */
667 if (strcmp(name
, (const char *)info
->name
) == 0) {
676 int part_get_info_by_name(struct blk_desc
*dev_desc
, const char *name
,
677 struct disk_partition
*info
)
679 return part_get_info_by_name_type(dev_desc
, name
, info
, PART_TYPE_ALL
);
683 * Get partition info from device number and partition name.
685 * Parse a device number and partition name string in the form of
686 * "device_num#partition_name", for example "0#misc". If the partition
687 * is found, sets dev_desc and part_info accordingly with the information
688 * of the partition with the given partition_name.
690 * @param[in] dev_iface Device interface
691 * @param[in] dev_part_str Input string argument, like "0#misc"
692 * @param[out] dev_desc Place to store the device description pointer
693 * @param[out] part_info Place to store the partition information
694 * @return 0 on success, or a negative on error
696 static int part_get_info_by_dev_and_name(const char *dev_iface
,
697 const char *dev_part_str
,
698 struct blk_desc
**dev_desc
,
699 struct disk_partition
*part_info
)
702 const char *part_str
;
705 part_str
= strchr(dev_part_str
, '#');
706 if (!part_str
|| part_str
== dev_part_str
)
709 dev_num
= simple_strtoul(dev_part_str
, &ep
, 16);
710 if (ep
!= part_str
) {
711 /* Not all the first part before the # was parsed. */
716 *dev_desc
= blk_get_dev(dev_iface
, dev_num
);
718 printf("Could not find %s %d\n", dev_iface
, dev_num
);
721 if (part_get_info_by_name(*dev_desc
, part_str
, part_info
) < 0) {
722 printf("Could not find \"%s\" partition\n", part_str
);
728 int part_get_info_by_dev_and_name_or_num(const char *dev_iface
,
729 const char *dev_part_str
,
730 struct blk_desc
**dev_desc
,
731 struct disk_partition
*part_info
)
733 /* Split the part_name if passed as "$dev_num#part_name". */
734 if (!part_get_info_by_dev_and_name(dev_iface
, dev_part_str
,
735 dev_desc
, part_info
))
738 * Couldn't lookup by name, try looking up the partition description
741 if (blk_get_device_part_str(dev_iface
, dev_part_str
,
742 dev_desc
, part_info
, 1) < 0) {
743 printf("Couldn't find partition %s %s\n",
744 dev_iface
, dev_part_str
);
750 void part_set_generic_name(const struct blk_desc
*dev_desc
,
751 int part_num
, char *name
)
755 switch (dev_desc
->if_type
) {
779 sprintf(name
, "%s%c%d", devtype
, 'a' + dev_desc
->devnum
, part_num
);