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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 DECLARE_GLOBAL_DATA_PTR
;
26 #ifdef HAVE_BLOCK_DEVICE
27 static struct part_driver
*part_driver_lookup_type(int part_type
)
29 struct part_driver
*drv
=
30 ll_entry_start(struct part_driver
, part_driver
);
31 const int n_ents
= ll_entry_count(struct part_driver
, part_driver
);
32 struct part_driver
*entry
;
34 for (entry
= drv
; entry
!= drv
+ n_ents
; entry
++) {
35 if (part_type
== entry
->part_type
)
43 static struct blk_desc
*get_dev_hwpart(const char *ifname
, int dev
, int hwpart
)
45 struct blk_desc
*dev_desc
;
48 dev_desc
= blk_get_devnum_by_typename(ifname
, dev
);
50 debug("%s: No device for iface '%s', dev %d\n", __func__
,
54 ret
= blk_dselect_hwpart(dev_desc
, hwpart
);
56 debug("%s: Failed to select h/w partition: err-%d\n", __func__
,
64 struct blk_desc
*blk_get_dev(const char *ifname
, int dev
)
66 return get_dev_hwpart(ifname
, dev
, 0);
69 struct blk_desc
*get_dev_hwpart(const char *ifname
, int dev
, int hwpart
)
74 struct blk_desc
*blk_get_dev(const char *ifname
, int dev
)
80 #ifdef HAVE_BLOCK_DEVICE
82 /* ------------------------------------------------------------------------- */
84 * reports device info to the user
88 typedef uint64_t lba512_t
;
90 typedef lbaint_t lba512_t
;
94 * Overflowless variant of (block_count * mul_by / div_by)
95 * when div_by > mul_by
97 static lba512_t
lba512_muldiv(lba512_t block_count
, lba512_t mul_by
, lba512_t div_by
)
99 lba512_t bc_quot
, bc_rem
;
101 /* x * m / d == x / d * m + (x % d) * m / d */
102 bc_quot
= block_count
/ div_by
;
103 bc_rem
= block_count
- div_by
* bc_quot
;
104 return bc_quot
* mul_by
+ (bc_rem
* mul_by
) / div_by
;
107 void dev_print (struct blk_desc
*dev_desc
)
109 lba512_t lba512
; /* number of blocks if 512bytes block size */
111 if (dev_desc
->type
== DEV_TYPE_UNKNOWN
) {
112 puts ("not available\n");
116 switch (dev_desc
->if_type
) {
118 printf ("(%d:%d) Vendor: %s Prod.: %s Rev: %s\n",
119 dev_desc
->target
,dev_desc
->lun
,
127 printf ("Model: %s Firm: %s Ser#: %s\n",
136 printf ("Vendor: %s Rev: %s Prod: %s\n",
142 puts("device type DOC\n");
144 case IF_TYPE_UNKNOWN
:
145 puts("device type unknown\n");
148 printf("Unhandled device type: %i\n", dev_desc
->if_type
);
152 if (dev_desc
->removable
)
154 switch (dev_desc
->type
& 0x1F) {
155 case DEV_TYPE_HARDDISK
:
161 case DEV_TYPE_OPDISK
:
162 puts ("Optical Device");
168 printf ("# %02X #", dev_desc
->type
& 0x1F);
172 if (dev_desc
->lba
> 0L && dev_desc
->blksz
> 0L) {
173 ulong mb
, mb_quot
, mb_rem
, gb
, gb_quot
, gb_rem
;
178 lba512
= (lba
* (dev_desc
->blksz
/512));
179 /* round to 1 digit */
180 /* 2048 = (1024 * 1024) / 512 MB */
181 mb
= lba512_muldiv(lba512
, 10, 2048);
184 mb_rem
= mb
- (10 * mb_quot
);
188 gb_rem
= gb
- (10 * gb_quot
);
191 printf (" Supports 48-bit addressing\n");
193 #if defined(CONFIG_SYS_64BIT_LBA)
194 printf (" Capacity: %lu.%lu MB = %lu.%lu GB (%llu x %lu)\n",
200 printf (" Capacity: %lu.%lu MB = %lu.%lu GB (%lu x %lu)\n",
207 puts (" Capacity: not available\n");
212 #ifdef HAVE_BLOCK_DEVICE
214 void part_init(struct blk_desc
*dev_desc
)
216 struct part_driver
*drv
=
217 ll_entry_start(struct part_driver
, part_driver
);
218 const int n_ents
= ll_entry_count(struct part_driver
, part_driver
);
219 struct part_driver
*entry
;
221 blkcache_invalidate(dev_desc
->if_type
, dev_desc
->devnum
);
223 dev_desc
->part_type
= PART_TYPE_UNKNOWN
;
224 for (entry
= drv
; entry
!= drv
+ n_ents
; entry
++) {
227 ret
= entry
->test(dev_desc
);
228 debug("%s: try '%s': ret=%d\n", __func__
, entry
->name
, ret
);
230 dev_desc
->part_type
= entry
->part_type
;
236 static void print_part_header(const char *type
, struct blk_desc
*dev_desc
)
238 #if CONFIG_IS_ENABLED(MAC_PARTITION) || \
239 CONFIG_IS_ENABLED(DOS_PARTITION) || \
240 CONFIG_IS_ENABLED(ISO_PARTITION) || \
241 CONFIG_IS_ENABLED(AMIGA_PARTITION) || \
242 CONFIG_IS_ENABLED(EFI_PARTITION)
243 puts ("\nPartition Map for ");
244 switch (dev_desc
->if_type
) {
276 printf (" device %d -- Partition Type: %s\n\n",
277 dev_desc
->devnum
, type
);
278 #endif /* any CONFIG_..._PARTITION */
281 void part_print(struct blk_desc
*dev_desc
)
283 struct part_driver
*drv
;
285 drv
= part_driver_lookup_type(dev_desc
->part_type
);
287 printf("## Unknown partition table type %x\n",
288 dev_desc
->part_type
);
292 PRINTF("## Testing for valid %s partition ##\n", drv
->name
);
293 print_part_header(drv
->name
, dev_desc
);
295 drv
->print(dev_desc
);
298 #endif /* HAVE_BLOCK_DEVICE */
300 int part_get_info(struct blk_desc
*dev_desc
, int part
,
301 disk_partition_t
*info
)
303 #ifdef HAVE_BLOCK_DEVICE
304 struct part_driver
*drv
;
306 #if CONFIG_IS_ENABLED(PARTITION_UUIDS)
307 /* The common case is no UUID support */
310 #ifdef CONFIG_PARTITION_TYPE_GUID
311 info
->type_guid
[0] = 0;
314 drv
= part_driver_lookup_type(dev_desc
->part_type
);
316 debug("## Unknown partition table type %x\n",
317 dev_desc
->part_type
);
318 return -EPROTONOSUPPORT
;
320 if (!drv
->get_info
) {
321 PRINTF("## Driver %s does not have the get_info() method\n",
325 if (drv
->get_info(dev_desc
, part
, info
) == 0) {
326 PRINTF("## Valid %s partition found ##\n", drv
->name
);
329 #endif /* HAVE_BLOCK_DEVICE */
334 int blk_get_device_by_str(const char *ifname
, const char *dev_hwpart_str
,
335 struct blk_desc
**dev_desc
)
338 char *dup_str
= NULL
;
339 const char *dev_str
, *hwpart_str
;
342 hwpart_str
= strchr(dev_hwpart_str
, '.');
344 dup_str
= strdup(dev_hwpart_str
);
345 dup_str
[hwpart_str
- dev_hwpart_str
] = 0;
349 dev_str
= dev_hwpart_str
;
353 dev
= simple_strtoul(dev_str
, &ep
, 16);
355 printf("** Bad device specification %s %s **\n",
362 hwpart
= simple_strtoul(hwpart_str
, &ep
, 16);
364 printf("** Bad HW partition specification %s %s **\n",
371 *dev_desc
= get_dev_hwpart(ifname
, dev
, hwpart
);
372 if (!(*dev_desc
) || ((*dev_desc
)->type
== DEV_TYPE_UNKNOWN
)) {
373 printf("** Bad device %s %s **\n", ifname
, dev_hwpart_str
);
378 #ifdef HAVE_BLOCK_DEVICE
380 * Updates the partition table for the specified hw partition.
381 * Does not need to be done for hwpart 0 since it is default and
385 part_init(*dev_desc
);
393 #define PART_UNSPECIFIED -2
395 int blk_get_device_part_str(const char *ifname
, const char *dev_part_str
,
396 struct blk_desc
**dev_desc
,
397 disk_partition_t
*info
, int allow_whole_dev
)
400 const char *part_str
;
401 char *dup_str
= NULL
;
407 disk_partition_t tmpinfo
;
409 #ifdef CONFIG_SANDBOX
411 * Special-case a pseudo block device "hostfs", to allow access to the
412 * host's own filesystem.
414 if (0 == strcmp(ifname
, "hostfs")) {
420 strcpy((char *)info
->type
, BOOT_PART_TYPE
);
421 strcpy((char *)info
->name
, "Sandbox host");
422 #if CONFIG_IS_ENABLED(PARTITION_UUIDS)
425 #ifdef CONFIG_PARTITION_TYPE_GUID
426 info
->type_guid
[0] = 0;
433 #ifdef CONFIG_CMD_UBIFS
435 * Special-case ubi, ubi goes through a mtd, rathen then through
436 * a regular block device.
438 if (0 == strcmp(ifname
, "ubi")) {
439 if (!ubifs_is_mounted()) {
440 printf("UBIFS not mounted, use ubifsmount to mount volume first!\n");
445 memset(info
, 0, sizeof(*info
));
446 strcpy((char *)info
->type
, BOOT_PART_TYPE
);
447 strcpy((char *)info
->name
, "UBI");
448 #if CONFIG_IS_ENABLED(PARTITION_UUIDS)
455 /* If no dev_part_str, use bootdevice environment variable */
456 if (!dev_part_str
|| !strlen(dev_part_str
) ||
457 !strcmp(dev_part_str
, "-"))
458 dev_part_str
= getenv("bootdevice");
460 /* If still no dev_part_str, it's an error */
462 printf("** No device specified **\n");
466 /* Separate device and partition ID specification */
467 part_str
= strchr(dev_part_str
, ':');
469 dup_str
= strdup(dev_part_str
);
470 dup_str
[part_str
- dev_part_str
] = 0;
474 dev_str
= dev_part_str
;
477 /* Look up the device */
478 dev
= blk_get_device_by_str(ifname
, dev_str
, dev_desc
);
482 /* Convert partition ID string to number */
483 if (!part_str
|| !*part_str
) {
484 part
= PART_UNSPECIFIED
;
485 } else if (!strcmp(part_str
, "auto")) {
488 /* Something specified -> use exactly that */
489 part
= (int)simple_strtoul(part_str
, &ep
, 16);
491 * Less than whole string converted,
492 * or request for whole device, but caller requires partition.
494 if (*ep
|| (part
== 0 && !allow_whole_dev
)) {
495 printf("** Bad partition specification %s %s **\n",
496 ifname
, dev_part_str
);
502 * No partition table on device,
503 * or user requested partition 0 (entire device).
505 if (((*dev_desc
)->part_type
== PART_TYPE_UNKNOWN
) ||
507 if (!(*dev_desc
)->lba
) {
508 printf("** Bad device size - %s %s **\n", ifname
,
514 * If user specified a partition ID other than 0,
515 * or the calling command only accepts partitions,
518 if ((part
> 0) || (!allow_whole_dev
)) {
519 printf("** No partition table - %s %s **\n", ifname
,
524 (*dev_desc
)->log2blksz
= LOG2((*dev_desc
)->blksz
);
527 info
->size
= (*dev_desc
)->lba
;
528 info
->blksz
= (*dev_desc
)->blksz
;
530 strcpy((char *)info
->type
, BOOT_PART_TYPE
);
531 strcpy((char *)info
->name
, "Whole Disk");
532 #if CONFIG_IS_ENABLED(PARTITION_UUIDS)
535 #ifdef CONFIG_PARTITION_TYPE_GUID
536 info
->type_guid
[0] = 0;
544 * Now there's known to be a partition table,
545 * not specifying a partition means to pick partition 1.
547 if (part
== PART_UNSPECIFIED
)
551 * If user didn't specify a partition number, or did specify something
552 * other than "auto", use that partition number directly.
554 if (part
!= PART_AUTO
) {
555 ret
= part_get_info(*dev_desc
, part
, info
);
557 printf("** Invalid partition %d **\n", part
);
562 * Find the first bootable partition.
563 * If none are bootable, fall back to the first valid partition.
566 for (p
= 1; p
<= MAX_SEARCH_PARTITIONS
; p
++) {
567 ret
= part_get_info(*dev_desc
, p
, info
);
572 * First valid partition, or new better partition?
573 * If so, save partition ID.
575 if (!part
|| info
->bootable
)
578 /* Best possible partition? Stop searching. */
583 * We now need to search further for best possible.
584 * If we what we just queried was the best so far,
585 * save the info since we over-write it next loop.
590 /* If we found any acceptable partition */
593 * If we searched all possible partition IDs,
594 * return the first valid partition we found.
596 if (p
== MAX_SEARCH_PARTITIONS
+ 1)
599 printf("** No valid partitions found **\n");
604 if (strncmp((char *)info
->type
, BOOT_PART_TYPE
, sizeof(info
->type
)) != 0) {
605 printf("** Invalid partition type \"%.32s\""
606 " (expect \"" BOOT_PART_TYPE
"\")\n",
612 (*dev_desc
)->log2blksz
= LOG2((*dev_desc
)->blksz
);
622 int part_get_info_by_name(struct blk_desc
*dev_desc
, const char *name
,
623 disk_partition_t
*info
)
625 struct part_driver
*first_drv
=
626 ll_entry_start(struct part_driver
, part_driver
);
627 const int n_drvs
= ll_entry_count(struct part_driver
, part_driver
);
628 struct part_driver
*part_drv
;
630 for (part_drv
= first_drv
; part_drv
!= first_drv
+ n_drvs
; part_drv
++) {
633 for (i
= 1; i
< part_drv
->max_entries
; i
++) {
634 ret
= part_drv
->get_info(dev_desc
, i
, info
);
636 /* no more entries in table */
639 if (strcmp(name
, (const char *)info
->name
) == 0) {
648 void part_set_generic_name(const struct blk_desc
*dev_desc
,
649 int part_num
, char *name
)
653 switch (dev_desc
->if_type
) {
677 sprintf(name
, "%s%c%d", devtype
, 'a' + dev_desc
->devnum
, part_num
);