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)