1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * (C) Copyright 2001
4 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
5 */
6
7 #include <common.h>
8 #include <command.h>
9 #include <env.h>
10 #include <errno.h>
11 #include <ide.h>
12 #include <malloc.h>
13 #include <part.h>
14 #include <ubifs_uboot.h>
15
16 #undef PART_DEBUG
17
18 #ifdef PART_DEBUG
19 #define PRINTF(fmt,args...) printf (fmt ,##args)
20 #else
21 #define PRINTF(fmt,args...)
22 #endif
23
24 /* Check all partition types */
25 #define PART_TYPE_ALL -1
26
part_driver_lookup_type(struct blk_desc * dev_desc)27 static struct part_driver *part_driver_lookup_type(struct blk_desc *dev_desc)
28 {
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;
33
34 if (dev_desc->part_type == PART_TYPE_UNKNOWN) {
35 for (entry = drv; entry != drv + n_ents; entry++) {
36 int ret;
37
38 ret = entry->test(dev_desc);
39 if (!ret) {
40 dev_desc->part_type = entry->part_type;
41 return entry;
42 }
43 }
44 } else {
45 for (entry = drv; entry != drv + n_ents; entry++) {
46 if (dev_desc->part_type == entry->part_type)
47 return entry;
48 }
49 }
50
51 /* Not found */
52 return NULL;
53 }
54
55 #ifdef CONFIG_HAVE_BLOCK_DEVICE
get_dev_hwpart(const char * ifname,int dev,int hwpart)56 static struct blk_desc *get_dev_hwpart(const char *ifname, int dev, int hwpart)
57 {
58 struct blk_desc *dev_desc;
59 int ret;
60
61 dev_desc = blk_get_devnum_by_typename(ifname, dev);
62 if (!dev_desc) {
63 debug("%s: No device for iface '%s', dev %d\n", __func__,
64 ifname, dev);
65 return NULL;
66 }
67 ret = blk_dselect_hwpart(dev_desc, hwpart);
68 if (ret) {
69 debug("%s: Failed to select h/w partition: err-%d\n", __func__,
70 ret);
71 return NULL;
72 }
73
74 return dev_desc;
75 }
76
blk_get_dev(const char * ifname,int dev)77 struct blk_desc *blk_get_dev(const char *ifname, int dev)
78 {
79 return get_dev_hwpart(ifname, dev, 0);
80 }
81 #else
get_dev_hwpart(const char * ifname,int dev,int hwpart)82 struct blk_desc *get_dev_hwpart(const char *ifname, int dev, int hwpart)
83 {
84 return NULL;
85 }
86
blk_get_dev(const char * ifname,int dev)87 struct blk_desc *blk_get_dev(const char *ifname, int dev)
88 {
89 return NULL;
90 }
91 #endif
92
93 #ifdef CONFIG_HAVE_BLOCK_DEVICE
94
95 /* ------------------------------------------------------------------------- */
96 /*
97 * reports device info to the user
98 */
99
100 #ifdef CONFIG_LBA48
101 typedef uint64_t lba512_t;
102 #else
103 typedef lbaint_t lba512_t;
104 #endif
105
106 /*
107 * Overflowless variant of (block_count * mul_by / 2**div_by)
108 * when div_by > mul_by
109 */
lba512_muldiv(lba512_t block_count,lba512_t mul_by,int div_by)110 static lba512_t lba512_muldiv(lba512_t block_count, lba512_t mul_by, int div_by)
111 {
112 lba512_t bc_quot, bc_rem;
113
114 /* x * m / d == x / d * m + (x % d) * m / d */
115 bc_quot = block_count >> div_by;
116 bc_rem = block_count - (bc_quot << div_by);
117 return bc_quot * mul_by + ((bc_rem * mul_by) >> div_by);
118 }
119
dev_print(struct blk_desc * dev_desc)120 void dev_print (struct blk_desc *dev_desc)
121 {
122 lba512_t lba512; /* number of blocks if 512bytes block size */
123
124 if (dev_desc->type == DEV_TYPE_UNKNOWN) {
125 puts ("not available\n");
126 return;
127 }
128
129 switch (dev_desc->if_type) {
130 case IF_TYPE_SCSI:
131 printf ("(%d:%d) Vendor: %s Prod.: %s Rev: %s\n",
132 dev_desc->target,dev_desc->lun,
133 dev_desc->vendor,
134 dev_desc->product,
135 dev_desc->revision);
136 break;
137 case IF_TYPE_ATAPI:
138 case IF_TYPE_IDE:
139 case IF_TYPE_SATA:
140 printf ("Model: %s Firm: %s Ser#: %s\n",
141 dev_desc->vendor,
142 dev_desc->revision,
143 dev_desc->product);
144 break;
145 case IF_TYPE_SD:
146 case IF_TYPE_MMC:
147 case IF_TYPE_USB:
148 case IF_TYPE_NVME:
149 printf ("Vendor: %s Rev: %s Prod: %s\n",
150 dev_desc->vendor,
151 dev_desc->revision,
152 dev_desc->product);
153 break;
154 case IF_TYPE_VIRTIO:
155 printf("%s VirtIO Block Device\n", dev_desc->vendor);
156 break;
157 case IF_TYPE_DOC:
158 puts("device type DOC\n");
159 return;
160 case IF_TYPE_UNKNOWN:
161 puts("device type unknown\n");
162 return;
163 default:
164 printf("Unhandled device type: %i\n", dev_desc->if_type);
165 return;
166 }
167 puts (" Type: ");
168 if (dev_desc->removable)
169 puts ("Removable ");
170 switch (dev_desc->type & 0x1F) {
171 case DEV_TYPE_HARDDISK:
172 puts ("Hard Disk");
173 break;
174 case DEV_TYPE_CDROM:
175 puts ("CD ROM");
176 break;
177 case DEV_TYPE_OPDISK:
178 puts ("Optical Device");
179 break;
180 case DEV_TYPE_TAPE:
181 puts ("Tape");
182 break;
183 default:
184 printf ("# %02X #", dev_desc->type & 0x1F);
185 break;
186 }
187 puts ("\n");
188 if (dev_desc->lba > 0L && dev_desc->blksz > 0L) {
189 ulong mb, mb_quot, mb_rem, gb, gb_quot, gb_rem;
190 lbaint_t lba;
191
192 lba = dev_desc->lba;
193
194 lba512 = (lba * (dev_desc->blksz/512));
195 /* round to 1 digit */
196 /* 2048 = (1024 * 1024) / 512 MB */
197 mb = lba512_muldiv(lba512, 10, 11);
198
199 mb_quot = mb / 10;
200 mb_rem = mb - (10 * mb_quot);
201
202 gb = mb / 1024;
203 gb_quot = gb / 10;
204 gb_rem = gb - (10 * gb_quot);
205 #ifdef CONFIG_LBA48
206 if (dev_desc->lba48)
207 printf (" Supports 48-bit addressing\n");
208 #endif
209 #if defined(CONFIG_SYS_64BIT_LBA)
210 printf (" Capacity: %lu.%lu MB = %lu.%lu GB (%llu x %lu)\n",
211 mb_quot, mb_rem,
212 gb_quot, gb_rem,
213 lba,
214 dev_desc->blksz);
215 #else
216 printf (" Capacity: %lu.%lu MB = %lu.%lu GB (%lu x %lu)\n",
217 mb_quot, mb_rem,
218 gb_quot, gb_rem,
219 (ulong)lba,
220 dev_desc->blksz);
221 #endif
222 } else {
223 puts (" Capacity: not available\n");
224 }
225 }
226 #endif
227
228 #ifdef CONFIG_HAVE_BLOCK_DEVICE
229
part_init(struct blk_desc * dev_desc)230 void part_init(struct blk_desc *dev_desc)
231 {
232 struct part_driver *drv =
233 ll_entry_start(struct part_driver, part_driver);
234 const int n_ents = ll_entry_count(struct part_driver, part_driver);
235 struct part_driver *entry;
236
237 blkcache_invalidate(dev_desc->if_type, dev_desc->devnum);
238
239 dev_desc->part_type = PART_TYPE_UNKNOWN;
240 for (entry = drv; entry != drv + n_ents; entry++) {
241 int ret;
242
243 ret = entry->test(dev_desc);
244 debug("%s: try '%s': ret=%d\n", __func__, entry->name, ret);
245 if (!ret) {
246 dev_desc->part_type = entry->part_type;
247 break;
248 }
249 }
250 }
251
print_part_header(const char * type,struct blk_desc * dev_desc)252 static void print_part_header(const char *type, struct blk_desc *dev_desc)
253 {
254 #if CONFIG_IS_ENABLED(MAC_PARTITION) || \
255 CONFIG_IS_ENABLED(DOS_PARTITION) || \
256 CONFIG_IS_ENABLED(ISO_PARTITION) || \
257 CONFIG_IS_ENABLED(AMIGA_PARTITION) || \
258 CONFIG_IS_ENABLED(EFI_PARTITION)
259 puts ("\nPartition Map for ");
260 switch (dev_desc->if_type) {
261 case IF_TYPE_IDE:
262 puts ("IDE");
263 break;
264 case IF_TYPE_SATA:
265 puts ("SATA");
266 break;
267 case IF_TYPE_SCSI:
268 puts ("SCSI");
269 break;
270 case IF_TYPE_ATAPI:
271 puts ("ATAPI");
272 break;
273 case IF_TYPE_USB:
274 puts ("USB");
275 break;
276 case IF_TYPE_DOC:
277 puts ("DOC");
278 break;
279 case IF_TYPE_MMC:
280 puts ("MMC");
281 break;
282 case IF_TYPE_HOST:
283 puts ("HOST");
284 break;
285 case IF_TYPE_NVME:
286 puts ("NVMe");
287 break;
288 case IF_TYPE_VIRTIO:
289 puts("VirtIO");
290 break;
291 default:
292 puts ("UNKNOWN");
293 break;
294 }
295 printf (" device %d -- Partition Type: %s\n\n",
296 dev_desc->devnum, type);
297 #endif /* any CONFIG_..._PARTITION */
298 }
299
part_print(struct blk_desc * dev_desc)300 void part_print(struct blk_desc *dev_desc)
301 {
302 struct part_driver *drv;
303
304 drv = part_driver_lookup_type(dev_desc);
305 if (!drv) {
306 printf("## Unknown partition table type %x\n",
307 dev_desc->part_type);
308 return;
309 }
310
311 PRINTF("## Testing for valid %s partition ##\n", drv->name);
312 print_part_header(drv->name, dev_desc);
313 if (drv->print)
314 drv->print(dev_desc);
315 }
316
317 #endif /* CONFIG_HAVE_BLOCK_DEVICE */
318
part_get_info(struct blk_desc * dev_desc,int part,disk_partition_t * info)319 int part_get_info(struct blk_desc *dev_desc, int part,
320 disk_partition_t *info)
321 {
322 #ifdef CONFIG_HAVE_BLOCK_DEVICE
323 struct part_driver *drv;
324
325 #if CONFIG_IS_ENABLED(PARTITION_UUIDS)
326 /* The common case is no UUID support */
327 info->uuid[0] = 0;
328 #endif
329 #ifdef CONFIG_PARTITION_TYPE_GUID
330 info->type_guid[0] = 0;
331 #endif
332
333 drv = part_driver_lookup_type(dev_desc);
334 if (!drv) {
335 debug("## Unknown partition table type %x\n",
336 dev_desc->part_type);
337 return -EPROTONOSUPPORT;
338 }
339 if (!drv->get_info) {
340 PRINTF("## Driver %s does not have the get_info() method\n",
341 drv->name);
342 return -ENOSYS;
343 }
344 if (drv->get_info(dev_desc, part, info) == 0) {
345 PRINTF("## Valid %s partition found ##\n", drv->name);
346 return 0;
347 }
348 #endif /* CONFIG_HAVE_BLOCK_DEVICE */
349
350 return -1;
351 }
352
part_get_info_whole_disk(struct blk_desc * dev_desc,disk_partition_t * info)353 int part_get_info_whole_disk(struct blk_desc *dev_desc, disk_partition_t *info)
354 {
355 info->start = 0;
356 info->size = dev_desc->lba;
357 info->blksz = dev_desc->blksz;
358 info->bootable = 0;
359 strcpy((char *)info->type, BOOT_PART_TYPE);
360 strcpy((char *)info->name, "Whole Disk");
361 #if CONFIG_IS_ENABLED(PARTITION_UUIDS)
362 info->uuid[0] = 0;
363 #endif
364 #ifdef CONFIG_PARTITION_TYPE_GUID
365 info->type_guid[0] = 0;
366 #endif
367
368 return 0;
369 }
370
blk_get_device_by_str(const char * ifname,const char * dev_hwpart_str,struct blk_desc ** dev_desc)371 int blk_get_device_by_str(const char *ifname, const char *dev_hwpart_str,
372 struct blk_desc **dev_desc)
373 {
374 char *ep;
375 char *dup_str = NULL;
376 const char *dev_str, *hwpart_str;
377 int dev, hwpart;
378
379 hwpart_str = strchr(dev_hwpart_str, '.');
380 if (hwpart_str) {
381 dup_str = strdup(dev_hwpart_str);
382 dup_str[hwpart_str - dev_hwpart_str] = 0;
383 dev_str = dup_str;
384 hwpart_str++;
385 } else {
386 dev_str = dev_hwpart_str;
387 hwpart = 0;
388 }
389
390 dev = simple_strtoul(dev_str, &ep, 16);
391 if (*ep) {
392 printf("** Bad device specification %s %s **\n",
393 ifname, dev_str);
394 dev = -EINVAL;
395 goto cleanup;
396 }
397
398 if (hwpart_str) {
399 hwpart = simple_strtoul(hwpart_str, &ep, 16);
400 if (*ep) {
401 printf("** Bad HW partition specification %s %s **\n",
402 ifname, hwpart_str);
403 dev = -EINVAL;
404 goto cleanup;
405 }
406 }
407
408 *dev_desc = get_dev_hwpart(ifname, dev, hwpart);
409 if (!(*dev_desc) || ((*dev_desc)->type == DEV_TYPE_UNKNOWN)) {
410 debug("** Bad device %s %s **\n", ifname, dev_hwpart_str);
411 dev = -ENOENT;
412 goto cleanup;
413 }
414
415 #ifdef CONFIG_HAVE_BLOCK_DEVICE
416 /*
417 * Updates the partition table for the specified hw partition.
418 * Always should be done, otherwise hw partition 0 will return stale
419 * data after displaying a non-zero hw partition.
420 */
421 part_init(*dev_desc);
422 #endif
423
424 cleanup:
425 free(dup_str);
426 return dev;
427 }
428
429 #define PART_UNSPECIFIED -2
430 #define PART_AUTO -1
blk_get_device_part_str(const char * ifname,const char * dev_part_str,struct blk_desc ** dev_desc,disk_partition_t * info,int allow_whole_dev)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)
434 {
435 int ret = -1;
436 const char *part_str;
437 char *dup_str = NULL;
438 const char *dev_str;
439 int dev;
440 char *ep;
441 int p;
442 int part;
443 disk_partition_t tmpinfo;
444
445 #ifdef CONFIG_SANDBOX
446 /*
447 * Special-case a pseudo block device "hostfs", to allow access to the
448 * host's own filesystem.
449 */
450 if (0 == strcmp(ifname, "hostfs")) {
451 *dev_desc = NULL;
452 info->start = 0;
453 info->size = 0;
454 info->blksz = 0;
455 info->bootable = 0;
456 strcpy((char *)info->type, BOOT_PART_TYPE);
457 strcpy((char *)info->name, "Sandbox host");
458 #if CONFIG_IS_ENABLED(PARTITION_UUIDS)
459 info->uuid[0] = 0;
460 #endif
461 #ifdef CONFIG_PARTITION_TYPE_GUID
462 info->type_guid[0] = 0;
463 #endif
464
465 return 0;
466 }
467 #endif
468
469 #ifdef CONFIG_CMD_UBIFS
470 /*
471 * Special-case ubi, ubi goes through a mtd, rather than through
472 * a regular block device.
473 */
474 if (0 == strcmp(ifname, "ubi")) {
475 if (!ubifs_is_mounted()) {
476 printf("UBIFS not mounted, use ubifsmount to mount volume first!\n");
477 return -1;
478 }
479
480 *dev_desc = NULL;
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)
485 info->uuid[0] = 0;
486 #endif
487 return 0;
488 }
489 #endif
490
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");
495
496 /* If still no dev_part_str, it's an error */
497 if (!dev_part_str) {
498 printf("** No device specified **\n");
499 goto cleanup;
500 }
501
502 /* Separate device and partition ID specification */
503 part_str = strchr(dev_part_str, ':');
504 if (part_str) {
505 dup_str = strdup(dev_part_str);
506 dup_str[part_str - dev_part_str] = 0;
507 dev_str = dup_str;
508 part_str++;
509 } else {
510 dev_str = dev_part_str;
511 }
512
513 /* Look up the device */
514 dev = blk_get_device_by_str(ifname, dev_str, dev_desc);
515 if (dev < 0)
516 goto cleanup;
517
518 /* Convert partition ID string to number */
519 if (!part_str || !*part_str) {
520 part = PART_UNSPECIFIED;
521 } else if (!strcmp(part_str, "auto")) {
522 part = PART_AUTO;
523 } else {
524 /* Something specified -> use exactly that */
525 part = (int)simple_strtoul(part_str, &ep, 16);
526 /*
527 * Less than whole string converted,
528 * or request for whole device, but caller requires partition.
529 */
530 if (*ep || (part == 0 && !allow_whole_dev)) {
531 printf("** Bad partition specification %s %s **\n",
532 ifname, dev_part_str);
533 goto cleanup;
534 }
535 }
536
537 /*
538 * No partition table on device,
539 * or user requested partition 0 (entire device).
540 */
541 if (((*dev_desc)->part_type == PART_TYPE_UNKNOWN) ||
542 (part == 0)) {
543 if (!(*dev_desc)->lba) {
544 printf("** Bad device size - %s %s **\n", ifname,
545 dev_str);
546 goto cleanup;
547 }
548
549 /*
550 * If user specified a partition ID other than 0,
551 * or the calling command only accepts partitions,
552 * it's an error.
553 */
554 if ((part > 0) || (!allow_whole_dev)) {
555 printf("** No partition table - %s %s **\n", ifname,
556 dev_str);
557 goto cleanup;
558 }
559
560 (*dev_desc)->log2blksz = LOG2((*dev_desc)->blksz);
561
562 part_get_info_whole_disk(*dev_desc, info);
563
564 ret = 0;
565 goto cleanup;
566 }
567
568 /*
569 * Now there's known to be a partition table,
570 * not specifying a partition means to pick partition 1.
571 */
572 if (part == PART_UNSPECIFIED)
573 part = 1;
574
575 /*
576 * If user didn't specify a partition number, or did specify something
577 * other than "auto", use that partition number directly.
578 */
579 if (part != PART_AUTO) {
580 ret = part_get_info(*dev_desc, part, info);
581 if (ret) {
582 printf("** Invalid partition %d **\n", part);
583 goto cleanup;
584 }
585 } else {
586 /*
587 * Find the first bootable partition.
588 * If none are bootable, fall back to the first valid partition.
589 */
590 part = 0;
591 for (p = 1; p <= MAX_SEARCH_PARTITIONS; p++) {
592 ret = part_get_info(*dev_desc, p, info);
593 if (ret)
594 continue;
595
596 /*
597 * First valid partition, or new better partition?
598 * If so, save partition ID.
599 */
600 if (!part || info->bootable)
601 part = p;
602
603 /* Best possible partition? Stop searching. */
604 if (info->bootable)
605 break;
606
607 /*
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.
611 */
612 if (part == p)
613 tmpinfo = *info;
614 }
615 /* If we found any acceptable partition */
616 if (part) {
617 /*
618 * If we searched all possible partition IDs,
619 * return the first valid partition we found.
620 */
621 if (p == MAX_SEARCH_PARTITIONS + 1)
622 *info = tmpinfo;
623 } else {
624 printf("** No valid partitions found **\n");
625 ret = -1;
626 goto cleanup;
627 }
628 }
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",
632 info->type);
633 ret = -1;
634 goto cleanup;
635 }
636
637 (*dev_desc)->log2blksz = LOG2((*dev_desc)->blksz);
638
639 ret = part;
640 goto cleanup;
641
642 cleanup:
643 free(dup_str);
644 return ret;
645 }
646
part_get_info_by_name_type(struct blk_desc * dev_desc,const char * name,disk_partition_t * info,int part_type)647 int part_get_info_by_name_type(struct blk_desc *dev_desc, const char *name,
648 disk_partition_t *info, int part_type)
649 {
650 struct part_driver *part_drv;
651 int ret;
652 int i;
653
654 part_drv = part_driver_lookup_type(dev_desc);
655 if (!part_drv)
656 return -1;
657 for (i = 1; i < part_drv->max_entries; i++) {
658 ret = part_drv->get_info(dev_desc, i, info);
659 if (ret != 0) {
660 /* no more entries in table */
661 break;
662 }
663 if (strcmp(name, (const char *)info->name) == 0) {
664 /* matched */
665 return i;
666 }
667 }
668
669 return -1;
670 }
671
part_get_info_by_name(struct blk_desc * dev_desc,const char * name,disk_partition_t * info)672 int part_get_info_by_name(struct blk_desc *dev_desc, const char *name,
673 disk_partition_t *info)
674 {
675 return part_get_info_by_name_type(dev_desc, name, info, PART_TYPE_ALL);
676 }
677
678 /**
679 * Get partition info from device number and partition name.
680 *
681 * Parse a device number and partition name string in the form of
682 * "device_num#partition_name", for example "0#misc". If the partition
683 * is found, sets dev_desc and part_info accordingly with the information
684 * of the partition with the given partition_name.
685 *
686 * @param[in] dev_iface Device interface
687 * @param[in] dev_part_str Input string argument, like "0#misc"
688 * @param[out] dev_desc Place to store the device description pointer
689 * @param[out] part_info Place to store the partition information
690 * @return 0 on success, or a negative on error
691 */
part_get_info_by_dev_and_name(const char * dev_iface,const char * dev_part_str,struct blk_desc ** dev_desc,disk_partition_t * part_info)692 static int part_get_info_by_dev_and_name(const char *dev_iface,
693 const char *dev_part_str,
694 struct blk_desc **dev_desc,
695 disk_partition_t *part_info)
696 {
697 char *ep;
698 const char *part_str;
699 int dev_num;
700
701 part_str = strchr(dev_part_str, '#');
702 if (!part_str || part_str == dev_part_str)
703 return -EINVAL;
704
705 dev_num = simple_strtoul(dev_part_str, &ep, 16);
706 if (ep != part_str) {
707 /* Not all the first part before the # was parsed. */
708 return -EINVAL;
709 }
710 part_str++;
711
712 *dev_desc = blk_get_dev(dev_iface, dev_num);
713 if (!*dev_desc) {
714 printf("Could not find %s %d\n", dev_iface, dev_num);
715 return -EINVAL;
716 }
717 if (part_get_info_by_name(*dev_desc, part_str, part_info) < 0) {
718 printf("Could not find \"%s\" partition\n", part_str);
719 return -EINVAL;
720 }
721 return 0;
722 }
723
part_get_info_by_dev_and_name_or_num(const char * dev_iface,const char * dev_part_str,struct blk_desc ** dev_desc,disk_partition_t * part_info)724 int part_get_info_by_dev_and_name_or_num(const char *dev_iface,
725 const char *dev_part_str,
726 struct blk_desc **dev_desc,
727 disk_partition_t *part_info)
728 {
729 /* Split the part_name if passed as "$dev_num#part_name". */
730 if (!part_get_info_by_dev_and_name(dev_iface, dev_part_str,
731 dev_desc, part_info))
732 return 0;
733 /*
734 * Couldn't lookup by name, try looking up the partition description
735 * directly.
736 */
737 if (blk_get_device_part_str(dev_iface, dev_part_str,
738 dev_desc, part_info, 1) < 0) {
739 printf("Couldn't find partition %s %s\n",
740 dev_iface, dev_part_str);
741 return -EINVAL;
742 }
743 return 0;
744 }
745
part_set_generic_name(const struct blk_desc * dev_desc,int part_num,char * name)746 void part_set_generic_name(const struct blk_desc *dev_desc,
747 int part_num, char *name)
748 {
749 char *devtype;
750
751 switch (dev_desc->if_type) {
752 case IF_TYPE_IDE:
753 case IF_TYPE_SATA:
754 case IF_TYPE_ATAPI:
755 devtype = "hd";
756 break;
757 case IF_TYPE_SCSI:
758 devtype = "sd";
759 break;
760 case IF_TYPE_USB:
761 devtype = "usbd";
762 break;
763 case IF_TYPE_DOC:
764 devtype = "docd";
765 break;
766 case IF_TYPE_MMC:
767 case IF_TYPE_SD:
768 devtype = "mmcsd";
769 break;
770 default:
771 devtype = "xx";
772 break;
773 }
774
775 sprintf(name, "%s%c%d", devtype, 'a' + dev_desc->devnum, part_num);
776 }
777