]>
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
30 * part_driver_get_type() - Get a driver given its type
32 * @part_type: Partition type to find the driver for
33 * Return: Driver for that type, or NULL if none
35 static struct part_driver
*part_driver_get_type(int part_type
)
37 struct part_driver
*drv
=
38 ll_entry_start(struct part_driver
, part_driver
);
39 const int n_ents
= ll_entry_count(struct part_driver
, part_driver
);
40 struct part_driver
*entry
;
42 for (entry
= drv
; entry
!= drv
+ n_ents
; entry
++) {
43 if (part_type
== entry
->part_type
)
52 * part_driver_lookup_type() - Look up the partition driver for a blk device
54 * If @desc->part_type is PART_TYPE_UNKNOWN, this checks each parition driver
55 * against the blk device to see if there is a valid partition table acceptable
58 * If @desc->part_type is already set, it just returns the driver for that
59 * type, without testing if the driver can find a valid partition on the
62 * On success it updates @desc->part_type if set to PART_TYPE_UNKNOWN on entry
64 * @dev_desc: Device descriptor
65 * Return: Driver found, or NULL if none
67 static struct part_driver
*part_driver_lookup_type(struct blk_desc
*desc
)
69 struct part_driver
*drv
=
70 ll_entry_start(struct part_driver
, part_driver
);
71 const int n_ents
= ll_entry_count(struct part_driver
, part_driver
);
72 struct part_driver
*entry
;
74 if (desc
->part_type
== PART_TYPE_UNKNOWN
) {
75 for (entry
= drv
; entry
!= drv
+ n_ents
; entry
++) {
78 ret
= entry
->test(desc
);
80 desc
->part_type
= entry
->part_type
;
85 return part_driver_get_type(desc
->part_type
);
92 int part_get_type_by_name(const char *name
)
94 struct part_driver
*drv
=
95 ll_entry_start(struct part_driver
, part_driver
);
96 const int n_ents
= ll_entry_count(struct part_driver
, part_driver
);
97 struct part_driver
*entry
;
99 for (entry
= drv
; entry
!= drv
+ n_ents
; entry
++) {
100 if (!strcasecmp(name
, entry
->name
))
101 return entry
->part_type
;
105 return PART_TYPE_UNKNOWN
;
109 * get_dev_hwpart() - Get the descriptor for a device with hardware partitions
111 * @ifname: Interface name (e.g. "ide", "scsi")
112 * @dev: Device number (0 for first device on that interface, 1 for
114 * @hwpart: Hardware partition, or 0 if none (used for MMC)
115 * Return: pointer to the block device, or NULL if not available, or an
118 static struct blk_desc
*get_dev_hwpart(const char *ifname
, int dev
, int hwpart
)
120 struct blk_desc
*desc
;
125 desc
= blk_get_devnum_by_uclass_idname(ifname
, dev
);
127 debug("%s: No device for iface '%s', dev %d\n", __func__
,
131 ret
= blk_dselect_hwpart(desc
, hwpart
);
133 debug("%s: Failed to select h/w partition: err-%d\n", __func__
,
141 struct blk_desc
*blk_get_dev(const char *ifname
, int dev
)
146 return get_dev_hwpart(ifname
, dev
, 0);
149 /* ------------------------------------------------------------------------- */
151 * reports device info to the user
155 typedef uint64_t lba512_t
;
157 typedef lbaint_t lba512_t
;
161 * Overflowless variant of (block_count * mul_by / 2**right_shift)
162 * when 2**right_shift > mul_by
164 static lba512_t
lba512_muldiv(lba512_t block_count
, lba512_t mul_by
,
167 lba512_t bc_quot
, bc_rem
;
169 /* x * m / d == x / d * m + (x % d) * m / d */
170 bc_quot
= block_count
>> right_shift
;
171 bc_rem
= block_count
- (bc_quot
<< right_shift
);
172 return bc_quot
* mul_by
+ ((bc_rem
* mul_by
) >> right_shift
);
175 void dev_print(struct blk_desc
*desc
)
177 lba512_t lba512
; /* number of blocks if 512bytes block size */
179 if (desc
->type
== DEV_TYPE_UNKNOWN
) {
180 puts ("not available\n");
184 switch (desc
->uclass_id
) {
186 printf("(%d:%d) Vendor: %s Prod.: %s Rev: %s\n", desc
->target
,
187 desc
->lun
, desc
->vendor
, desc
->product
, desc
->revision
);
191 printf("Model: %s Firm: %s Ser#: %s\n", desc
->vendor
,
192 desc
->revision
, desc
->product
);
201 printf ("Vendor: %s Rev: %s Prod: %s\n",
207 printf("%s VirtIO Block Device\n", desc
->vendor
);
209 case UCLASS_EFI_MEDIA
:
210 printf("EFI media Block Device %d\n", desc
->devnum
);
213 puts("device type unknown\n");
216 printf("Unhandled device type: %i\n", desc
->uclass_id
);
222 switch (desc
->type
& 0x1F) {
223 case DEV_TYPE_HARDDISK
:
229 case DEV_TYPE_OPDISK
:
230 puts ("Optical Device");
236 printf("# %02X #", desc
->type
& 0x1F);
240 if (desc
->lba
> 0L && desc
->blksz
> 0L) {
241 ulong mb
, mb_quot
, mb_rem
, gb
, gb_quot
, gb_rem
;
246 lba512
= lba
* (desc
->blksz
/ 512);
247 /* round to 1 digit */
248 /* 2048 = (1024 * 1024) / 512 MB */
249 mb
= lba512_muldiv(lba512
, 10, 11);
252 mb_rem
= mb
- (10 * mb_quot
);
256 gb_rem
= gb
- (10 * gb_quot
);
259 printf (" Supports 48-bit addressing\n");
261 #if defined(CONFIG_SYS_64BIT_LBA)
262 printf (" Capacity: %lu.%lu MB = %lu.%lu GB (%llu x %lu)\n",
268 printf (" Capacity: %lu.%lu MB = %lu.%lu GB (%lu x %lu)\n",
275 puts (" Capacity: not available\n");
279 void part_init(struct blk_desc
*desc
)
281 struct part_driver
*drv
=
282 ll_entry_start(struct part_driver
, part_driver
);
283 const int n_ents
= ll_entry_count(struct part_driver
, part_driver
);
284 struct part_driver
*entry
;
286 blkcache_invalidate(desc
->uclass_id
, desc
->devnum
);
288 desc
->part_type
= PART_TYPE_UNKNOWN
;
289 for (entry
= drv
; entry
!= drv
+ n_ents
; entry
++) {
292 ret
= entry
->test(desc
);
293 debug("%s: try '%s': ret=%d\n", __func__
, entry
->name
, ret
);
295 desc
->part_type
= entry
->part_type
;
301 static void print_part_header(const char *type
, struct blk_desc
*desc
)
303 #if CONFIG_IS_ENABLED(MAC_PARTITION) || \
304 CONFIG_IS_ENABLED(DOS_PARTITION) || \
305 CONFIG_IS_ENABLED(ISO_PARTITION) || \
306 CONFIG_IS_ENABLED(AMIGA_PARTITION) || \
307 CONFIG_IS_ENABLED(EFI_PARTITION)
308 puts ("\nPartition Map for ");
309 switch (desc
->uclass_id
) {
340 case UCLASS_EFI_MEDIA
:
347 printf("UNKNOWN(%d)", desc
->uclass_id
);
350 printf (" device %d -- Partition Type: %s\n\n",
352 #endif /* any CONFIG_..._PARTITION */
355 void part_print(struct blk_desc
*desc
)
357 struct part_driver
*drv
;
359 drv
= part_driver_lookup_type(desc
);
361 printf("## Unknown partition table type %x\n",
366 PRINTF("## Testing for valid %s partition ##\n", drv
->name
);
367 print_part_header(drv
->name
, desc
);
372 int part_get_info_by_type(struct blk_desc
*desc
, int part
, int part_type
,
373 struct disk_partition
*info
)
375 struct part_driver
*drv
;
378 /* The common case is no UUID support */
379 disk_partition_clr_uuid(info
);
380 disk_partition_clr_type_guid(info
);
382 if (part_type
== PART_TYPE_UNKNOWN
) {
383 drv
= part_driver_lookup_type(desc
);
385 drv
= part_driver_get_type(part_type
);
389 debug("## Unknown partition table type %x\n",
391 return -EPROTONOSUPPORT
;
393 if (!drv
->get_info
) {
394 PRINTF("## Driver %s does not have the get_info() method\n",
398 if (drv
->get_info(desc
, part
, info
) == 0) {
399 PRINTF("## Valid %s partition found ##\n", drv
->name
);
407 int part_get_info(struct blk_desc
*desc
, int part
,
408 struct disk_partition
*info
)
410 return part_get_info_by_type(desc
, part
, PART_TYPE_UNKNOWN
, info
);
413 int part_get_info_whole_disk(struct blk_desc
*desc
,
414 struct disk_partition
*info
)
417 info
->size
= desc
->lba
;
418 info
->blksz
= desc
->blksz
;
420 strcpy((char *)info
->type
, BOOT_PART_TYPE
);
421 strcpy((char *)info
->name
, "Whole Disk");
422 disk_partition_clr_uuid(info
);
423 disk_partition_clr_type_guid(info
);
428 int blk_get_device_by_str(const char *ifname
, const char *dev_hwpart_str
,
429 struct blk_desc
**desc
)
432 char *dup_str
= NULL
;
433 const char *dev_str
, *hwpart_str
;
436 hwpart_str
= strchr(dev_hwpart_str
, '.');
438 dup_str
= strdup(dev_hwpart_str
);
439 dup_str
[hwpart_str
- dev_hwpart_str
] = 0;
443 dev_str
= dev_hwpart_str
;
447 dev
= hextoul(dev_str
, &ep
);
449 printf("** Bad device specification %s %s **\n",
456 hwpart
= hextoul(hwpart_str
, &ep
);
458 printf("** Bad HW partition specification %s %s **\n",
465 *desc
= get_dev_hwpart(ifname
, dev
, hwpart
);
466 if (!(*desc
) || ((*desc
)->type
== DEV_TYPE_UNKNOWN
)) {
467 debug("** Bad device %s %s **\n", ifname
, dev_hwpart_str
);
474 * Updates the partition table for the specified hw partition.
475 * Always should be done, otherwise hw partition 0 will return
476 * stale data after displaying a non-zero hw partition.
478 if ((*desc
)->uclass_id
== UCLASS_MMC
)
487 #define PART_UNSPECIFIED -2
489 int blk_get_device_part_str(const char *ifname
, const char *dev_part_str
,
490 struct blk_desc
**desc
,
491 struct disk_partition
*info
, int allow_whole_dev
)
494 const char *part_str
;
495 char *dup_str
= NULL
;
501 struct disk_partition tmpinfo
;
504 memset(info
, 0, sizeof(*info
));
506 #if IS_ENABLED(CONFIG_SANDBOX) || IS_ENABLED(CONFIG_SEMIHOSTING)
508 * Special-case a pseudo block device "hostfs", to allow access to the
509 * host's own filesystem.
511 if (!strcmp(ifname
, "hostfs")) {
512 strcpy((char *)info
->type
, BOOT_PART_TYPE
);
513 strcpy((char *)info
->name
, "Host filesystem");
519 #if IS_ENABLED(CONFIG_CMD_UBIFS) && !IS_ENABLED(CONFIG_SPL_BUILD)
521 * Special-case ubi, ubi goes through a mtd, rather than through
522 * a regular block device.
524 if (!strcmp(ifname
, "ubi")) {
525 if (!ubifs_is_mounted()) {
526 printf("UBIFS not mounted, use ubifsmount to mount volume first!\n");
530 strcpy((char *)info
->type
, BOOT_PART_TYPE
);
531 strcpy((char *)info
->name
, "UBI");
536 /* If no dev_part_str, use bootdevice environment variable */
537 if (CONFIG_IS_ENABLED(ENV_SUPPORT
)) {
538 if (!dev_part_str
|| !strlen(dev_part_str
) ||
539 !strcmp(dev_part_str
, "-"))
540 dev_part_str
= env_get("bootdevice");
543 /* If still no dev_part_str, it's an error */
545 printf("** No device specified **\n");
550 /* Separate device and partition ID specification */
551 part_str
= strchr(dev_part_str
, ':');
553 dup_str
= strdup(dev_part_str
);
554 dup_str
[part_str
- dev_part_str
] = 0;
558 dev_str
= dev_part_str
;
561 /* Look up the device */
562 dev
= blk_get_device_by_str(ifname
, dev_str
, desc
);
564 printf("** Bad device specification %s %s **\n",
570 /* Convert partition ID string to number */
571 if (!part_str
|| !*part_str
) {
572 part
= PART_UNSPECIFIED
;
573 } else if (!strcmp(part_str
, "auto")) {
576 /* Something specified -> use exactly that */
577 part
= (int)hextoul(part_str
, &ep
);
579 * Less than whole string converted,
580 * or request for whole device, but caller requires partition.
582 if (*ep
|| (part
== 0 && !allow_whole_dev
)) {
583 printf("** Bad partition specification %s %s **\n",
584 ifname
, dev_part_str
);
591 * No partition table on device,
592 * or user requested partition 0 (entire device).
594 if (((*desc
)->part_type
== PART_TYPE_UNKNOWN
) || !part
) {
596 printf("** Bad device size - %s %s **\n", ifname
,
603 * If user specified a partition ID other than 0,
604 * or the calling command only accepts partitions,
607 if ((part
> 0) || (!allow_whole_dev
)) {
608 printf("** No partition table - %s %s **\n", ifname
,
610 ret
= -EPROTONOSUPPORT
;
614 (*desc
)->log2blksz
= LOG2((*desc
)->blksz
);
616 part_get_info_whole_disk(*desc
, info
);
623 * Now there's known to be a partition table,
624 * not specifying a partition means to pick partition 1.
626 if (part
== PART_UNSPECIFIED
)
630 * If user didn't specify a partition number, or did specify something
631 * other than "auto", use that partition number directly.
633 if (part
!= PART_AUTO
) {
634 ret
= part_get_info(*desc
, part
, info
);
636 printf("** Invalid partition %d **\n", part
);
641 * Find the first bootable partition.
642 * If none are bootable, fall back to the first valid partition.
645 for (p
= 1; p
<= MAX_SEARCH_PARTITIONS
; p
++) {
646 ret
= part_get_info(*desc
, p
, info
);
651 * First valid partition, or new better partition?
652 * If so, save partition ID.
654 if (!part
|| info
->bootable
)
657 /* Best possible partition? Stop searching. */
662 * We now need to search further for best possible.
663 * If we what we just queried was the best so far,
664 * save the info since we over-write it next loop.
669 /* If we found any acceptable partition */
672 * If we searched all possible partition IDs,
673 * return the first valid partition we found.
675 if (p
== MAX_SEARCH_PARTITIONS
+ 1)
678 printf("** No valid partitions found **\n");
682 if (strncmp((char *)info
->type
, BOOT_PART_TYPE
, sizeof(info
->type
)) != 0) {
683 printf("** Invalid partition type \"%.32s\""
684 " (expect \"" BOOT_PART_TYPE
"\")\n",
690 (*desc
)->log2blksz
= LOG2((*desc
)->blksz
);
700 int part_get_info_by_name(struct blk_desc
*desc
, const char *name
,
701 struct disk_partition
*info
)
703 struct part_driver
*part_drv
;
707 part_drv
= part_driver_lookup_type(desc
);
711 if (!part_drv
->get_info
) {
712 log_debug("## Driver %s does not have the get_info() method\n",
717 for (i
= 1; i
< part_drv
->max_entries
; i
++) {
718 ret
= part_drv
->get_info(desc
, i
, info
);
720 /* no more entries in table */
723 if (strcmp(name
, (const char *)info
->name
) == 0) {
733 * Get partition info from device number and partition name.
735 * Parse a device number and partition name string in the form of
736 * "devicenum.hwpartnum#partition_name", for example "0.1#misc". devicenum and
737 * hwpartnum are both optional, defaulting to 0. If the partition is found,
738 * sets desc and part_info accordingly with the information of the
739 * partition with the given partition_name.
741 * @param[in] dev_iface Device interface
742 * @param[in] dev_part_str Input string argument, like "0.1#misc"
743 * @param[out] desc Place to store the device description pointer
744 * @param[out] part_info Place to store the partition information
745 * Return: 0 on success, or a negative on error
747 static int part_get_info_by_dev_and_name(const char *dev_iface
,
748 const char *dev_part_str
,
749 struct blk_desc
**desc
,
750 struct disk_partition
*part_info
)
752 char *dup_str
= NULL
;
753 const char *dev_str
, *part_str
;
756 /* Separate device and partition name specification */
758 part_str
= strchr(dev_part_str
, '#');
763 dup_str
= strdup(dev_part_str
);
764 dup_str
[part_str
- dev_part_str
] = 0;
771 ret
= blk_get_device_by_str(dev_iface
, dev_str
, desc
);
775 ret
= part_get_info_by_name(*desc
, part_str
, part_info
);
777 printf("Could not find \"%s\" partition\n", part_str
);
784 int part_get_info_by_dev_and_name_or_num(const char *dev_iface
,
785 const char *dev_part_str
,
786 struct blk_desc
**desc
,
787 struct disk_partition
*part_info
,
792 /* Split the part_name if passed as "$dev_num#part_name". */
793 ret
= part_get_info_by_dev_and_name(dev_iface
, dev_part_str
, desc
,
798 * Couldn't lookup by name, try looking up the partition description
801 ret
= blk_get_device_part_str(dev_iface
, dev_part_str
, desc
, part_info
,
804 printf("Couldn't find partition %s %s\n",
805 dev_iface
, dev_part_str
);
809 void part_set_generic_name(const struct blk_desc
*desc
, int part_num
,
814 switch (desc
->uclass_id
) {
833 sprintf(name
, "%s%c%d", devtype
, 'a' + desc
->devnum
, part_num
);
836 int part_get_bootable(struct blk_desc
*desc
)
838 struct disk_partition info
;
841 for (p
= 1; p
<= MAX_SEARCH_PARTITIONS
; p
++) {
844 ret
= part_get_info(desc
, p
, &info
);
845 if (!ret
&& info
.bootable
)