disk: convert CONFIG_ISO_PARTITION to Kconfig
[platform/kernel/u-boot.git] / disk / part.c
1 /*
2  * (C) Copyright 2001
3  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
4  *
5  * SPDX-License-Identifier:     GPL-2.0+
6  */
7
8 #include <common.h>
9 #include <command.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 DECLARE_GLOBAL_DATA_PTR;
25
26 #ifdef HAVE_BLOCK_DEVICE
27 static struct part_driver *part_driver_lookup_type(int part_type)
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         for (entry = drv; entry != drv + n_ents; entry++) {
35                 if (part_type == entry->part_type)
36                         return entry;
37         }
38
39         /* Not found */
40         return NULL;
41 }
42
43 static struct blk_desc *get_dev_hwpart(const char *ifname, int dev, int hwpart)
44 {
45         struct blk_desc *dev_desc;
46         int ret;
47
48         dev_desc = blk_get_devnum_by_typename(ifname, dev);
49         if (!dev_desc) {
50                 debug("%s: No device for iface '%s', dev %d\n", __func__,
51                       ifname, dev);
52                 return NULL;
53         }
54         ret = blk_dselect_hwpart(dev_desc, hwpart);
55         if (ret) {
56                 debug("%s: Failed to select h/w partition: err-%d\n", __func__,
57                       ret);
58                 return NULL;
59         }
60
61         return dev_desc;
62 }
63
64 struct blk_desc *blk_get_dev(const char *ifname, int dev)
65 {
66         return get_dev_hwpart(ifname, dev, 0);
67 }
68 #else
69 struct blk_desc *get_dev_hwpart(const char *ifname, int dev, int hwpart)
70 {
71         return NULL;
72 }
73
74 struct blk_desc *blk_get_dev(const char *ifname, int dev)
75 {
76         return NULL;
77 }
78 #endif
79
80 #ifdef HAVE_BLOCK_DEVICE
81
82 /* ------------------------------------------------------------------------- */
83 /*
84  * reports device info to the user
85  */
86
87 #ifdef CONFIG_LBA48
88 typedef uint64_t lba512_t;
89 #else
90 typedef lbaint_t lba512_t;
91 #endif
92
93 /*
94  * Overflowless variant of (block_count * mul_by / div_by)
95  * when div_by > mul_by
96  */
97 static lba512_t lba512_muldiv(lba512_t block_count, lba512_t mul_by, lba512_t div_by)
98 {
99         lba512_t bc_quot, bc_rem;
100
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;
105 }
106
107 void dev_print (struct blk_desc *dev_desc)
108 {
109         lba512_t lba512; /* number of blocks if 512bytes block size */
110
111         if (dev_desc->type == DEV_TYPE_UNKNOWN) {
112                 puts ("not available\n");
113                 return;
114         }
115
116         switch (dev_desc->if_type) {
117         case IF_TYPE_SCSI:
118                 printf ("(%d:%d) Vendor: %s Prod.: %s Rev: %s\n",
119                         dev_desc->target,dev_desc->lun,
120                         dev_desc->vendor,
121                         dev_desc->product,
122                         dev_desc->revision);
123                 break;
124         case IF_TYPE_ATAPI:
125         case IF_TYPE_IDE:
126         case IF_TYPE_SATA:
127                 printf ("Model: %s Firm: %s Ser#: %s\n",
128                         dev_desc->vendor,
129                         dev_desc->revision,
130                         dev_desc->product);
131                 break;
132         case IF_TYPE_SD:
133         case IF_TYPE_MMC:
134         case IF_TYPE_USB:
135                 printf ("Vendor: %s Rev: %s Prod: %s\n",
136                         dev_desc->vendor,
137                         dev_desc->revision,
138                         dev_desc->product);
139                 break;
140         case IF_TYPE_DOC:
141                 puts("device type DOC\n");
142                 return;
143         case IF_TYPE_UNKNOWN:
144                 puts("device type unknown\n");
145                 return;
146         default:
147                 printf("Unhandled device type: %i\n", dev_desc->if_type);
148                 return;
149         }
150         puts ("            Type: ");
151         if (dev_desc->removable)
152                 puts ("Removable ");
153         switch (dev_desc->type & 0x1F) {
154         case DEV_TYPE_HARDDISK:
155                 puts ("Hard Disk");
156                 break;
157         case DEV_TYPE_CDROM:
158                 puts ("CD ROM");
159                 break;
160         case DEV_TYPE_OPDISK:
161                 puts ("Optical Device");
162                 break;
163         case DEV_TYPE_TAPE:
164                 puts ("Tape");
165                 break;
166         default:
167                 printf ("# %02X #", dev_desc->type & 0x1F);
168                 break;
169         }
170         puts ("\n");
171         if (dev_desc->lba > 0L && dev_desc->blksz > 0L) {
172                 ulong mb, mb_quot, mb_rem, gb, gb_quot, gb_rem;
173                 lbaint_t lba;
174
175                 lba = dev_desc->lba;
176
177                 lba512 = (lba * (dev_desc->blksz/512));
178                 /* round to 1 digit */
179                 /* 2048 = (1024 * 1024) / 512 MB */
180                 mb = lba512_muldiv(lba512, 10, 2048);
181
182                 mb_quot = mb / 10;
183                 mb_rem  = mb - (10 * mb_quot);
184
185                 gb = mb / 1024;
186                 gb_quot = gb / 10;
187                 gb_rem  = gb - (10 * gb_quot);
188 #ifdef CONFIG_LBA48
189                 if (dev_desc->lba48)
190                         printf ("            Supports 48-bit addressing\n");
191 #endif
192 #if defined(CONFIG_SYS_64BIT_LBA)
193                 printf ("            Capacity: %lu.%lu MB = %lu.%lu GB (%llu x %lu)\n",
194                         mb_quot, mb_rem,
195                         gb_quot, gb_rem,
196                         lba,
197                         dev_desc->blksz);
198 #else
199                 printf ("            Capacity: %lu.%lu MB = %lu.%lu GB (%lu x %lu)\n",
200                         mb_quot, mb_rem,
201                         gb_quot, gb_rem,
202                         (ulong)lba,
203                         dev_desc->blksz);
204 #endif
205         } else {
206                 puts ("            Capacity: not available\n");
207         }
208 }
209 #endif
210
211 #ifdef HAVE_BLOCK_DEVICE
212
213 void part_init(struct blk_desc *dev_desc)
214 {
215         struct part_driver *drv =
216                 ll_entry_start(struct part_driver, part_driver);
217         const int n_ents = ll_entry_count(struct part_driver, part_driver);
218         struct part_driver *entry;
219
220         blkcache_invalidate(dev_desc->if_type, dev_desc->devnum);
221
222         dev_desc->part_type = PART_TYPE_UNKNOWN;
223         for (entry = drv; entry != drv + n_ents; entry++) {
224                 int ret;
225
226                 ret = entry->test(dev_desc);
227                 debug("%s: try '%s': ret=%d\n", __func__, entry->name, ret);
228                 if (!ret) {
229                         dev_desc->part_type = entry->part_type;
230                         break;
231                 }
232         }
233 }
234
235 static void print_part_header(const char *type, struct blk_desc *dev_desc)
236 {
237 #if CONFIG_IS_ENABLED(MAC_PARTITION) || \
238         CONFIG_IS_ENABLED(DOS_PARTITION) || \
239         CONFIG_IS_ENABLED(ISO_PARTITION) || \
240         defined(CONFIG_AMIGA_PARTITION) || \
241         defined(CONFIG_EFI_PARTITION)
242         puts ("\nPartition Map for ");
243         switch (dev_desc->if_type) {
244         case IF_TYPE_IDE:
245                 puts ("IDE");
246                 break;
247         case IF_TYPE_SATA:
248                 puts ("SATA");
249                 break;
250         case IF_TYPE_SCSI:
251                 puts ("SCSI");
252                 break;
253         case IF_TYPE_ATAPI:
254                 puts ("ATAPI");
255                 break;
256         case IF_TYPE_USB:
257                 puts ("USB");
258                 break;
259         case IF_TYPE_DOC:
260                 puts ("DOC");
261                 break;
262         case IF_TYPE_MMC:
263                 puts ("MMC");
264                 break;
265         case IF_TYPE_HOST:
266                 puts("HOST");
267                 break;
268         default:
269                 puts ("UNKNOWN");
270                 break;
271         }
272         printf (" device %d  --   Partition Type: %s\n\n",
273                         dev_desc->devnum, type);
274 #endif /* any CONFIG_..._PARTITION */
275 }
276
277 void part_print(struct blk_desc *dev_desc)
278 {
279         struct part_driver *drv;
280
281         drv = part_driver_lookup_type(dev_desc->part_type);
282         if (!drv) {
283                 printf("## Unknown partition table type %x\n",
284                        dev_desc->part_type);
285                 return;
286         }
287
288         PRINTF("## Testing for valid %s partition ##\n", drv->name);
289         print_part_header(drv->name, dev_desc);
290         if (drv->print)
291                 drv->print(dev_desc);
292 }
293
294 #endif /* HAVE_BLOCK_DEVICE */
295
296 int part_get_info(struct blk_desc *dev_desc, int part,
297                        disk_partition_t *info)
298 {
299 #ifdef HAVE_BLOCK_DEVICE
300         struct part_driver *drv;
301
302 #ifdef CONFIG_PARTITION_UUIDS
303         /* The common case is no UUID support */
304         info->uuid[0] = 0;
305 #endif
306 #ifdef CONFIG_PARTITION_TYPE_GUID
307         info->type_guid[0] = 0;
308 #endif
309
310         drv = part_driver_lookup_type(dev_desc->part_type);
311         if (!drv) {
312                 debug("## Unknown partition table type %x\n",
313                       dev_desc->part_type);
314                 return -EPROTONOSUPPORT;
315         }
316         if (!drv->get_info) {
317                 PRINTF("## Driver %s does not have the get_info() method\n",
318                        drv->name);
319                 return -ENOSYS;
320         }
321         if (drv->get_info(dev_desc, part, info) == 0) {
322                 PRINTF("## Valid %s partition found ##\n", drv->name);
323                 return 0;
324         }
325 #endif /* HAVE_BLOCK_DEVICE */
326
327         return -1;
328 }
329
330 int blk_get_device_by_str(const char *ifname, const char *dev_hwpart_str,
331                           struct blk_desc **dev_desc)
332 {
333         char *ep;
334         char *dup_str = NULL;
335         const char *dev_str, *hwpart_str;
336         int dev, hwpart;
337
338         hwpart_str = strchr(dev_hwpart_str, '.');
339         if (hwpart_str) {
340                 dup_str = strdup(dev_hwpart_str);
341                 dup_str[hwpart_str - dev_hwpart_str] = 0;
342                 dev_str = dup_str;
343                 hwpart_str++;
344         } else {
345                 dev_str = dev_hwpart_str;
346                 hwpart = 0;
347         }
348
349         dev = simple_strtoul(dev_str, &ep, 16);
350         if (*ep) {
351                 printf("** Bad device specification %s %s **\n",
352                        ifname, dev_str);
353                 dev = -EINVAL;
354                 goto cleanup;
355         }
356
357         if (hwpart_str) {
358                 hwpart = simple_strtoul(hwpart_str, &ep, 16);
359                 if (*ep) {
360                         printf("** Bad HW partition specification %s %s **\n",
361                             ifname, hwpart_str);
362                         dev = -EINVAL;
363                         goto cleanup;
364                 }
365         }
366
367         *dev_desc = get_dev_hwpart(ifname, dev, hwpart);
368         if (!(*dev_desc) || ((*dev_desc)->type == DEV_TYPE_UNKNOWN)) {
369                 printf("** Bad device %s %s **\n", ifname, dev_hwpart_str);
370                 dev = -ENOENT;
371                 goto cleanup;
372         }
373
374 #ifdef HAVE_BLOCK_DEVICE
375         /*
376          * Updates the partition table for the specified hw partition.
377          * Does not need to be done for hwpart 0 since it is default and
378          * already loaded.
379          */
380         if(hwpart != 0)
381                 part_init(*dev_desc);
382 #endif
383
384 cleanup:
385         free(dup_str);
386         return dev;
387 }
388
389 #define PART_UNSPECIFIED -2
390 #define PART_AUTO -1
391 #define MAX_SEARCH_PARTITIONS 16
392 int blk_get_device_part_str(const char *ifname, const char *dev_part_str,
393                              struct blk_desc **dev_desc,
394                              disk_partition_t *info, int allow_whole_dev)
395 {
396         int ret = -1;
397         const char *part_str;
398         char *dup_str = NULL;
399         const char *dev_str;
400         int dev;
401         char *ep;
402         int p;
403         int part;
404         disk_partition_t tmpinfo;
405
406 #ifdef CONFIG_SANDBOX
407         /*
408          * Special-case a pseudo block device "hostfs", to allow access to the
409          * host's own filesystem.
410          */
411         if (0 == strcmp(ifname, "hostfs")) {
412                 *dev_desc = NULL;
413                 info->start = 0;
414                 info->size = 0;
415                 info->blksz = 0;
416                 info->bootable = 0;
417                 strcpy((char *)info->type, BOOT_PART_TYPE);
418                 strcpy((char *)info->name, "Sandbox host");
419 #ifdef CONFIG_PARTITION_UUIDS
420                 info->uuid[0] = 0;
421 #endif
422 #ifdef CONFIG_PARTITION_TYPE_GUID
423                 info->type_guid[0] = 0;
424 #endif
425
426                 return 0;
427         }
428 #endif
429
430 #ifdef CONFIG_CMD_UBIFS
431         /*
432          * Special-case ubi, ubi goes through a mtd, rathen then through
433          * a regular block device.
434          */
435         if (0 == strcmp(ifname, "ubi")) {
436                 if (!ubifs_is_mounted()) {
437                         printf("UBIFS not mounted, use ubifsmount to mount volume first!\n");
438                         return -1;
439                 }
440
441                 *dev_desc = NULL;
442                 memset(info, 0, sizeof(*info));
443                 strcpy((char *)info->type, BOOT_PART_TYPE);
444                 strcpy((char *)info->name, "UBI");
445 #ifdef CONFIG_PARTITION_UUIDS
446                 info->uuid[0] = 0;
447 #endif
448                 return 0;
449         }
450 #endif
451
452         /* If no dev_part_str, use bootdevice environment variable */
453         if (!dev_part_str || !strlen(dev_part_str) ||
454             !strcmp(dev_part_str, "-"))
455                 dev_part_str = getenv("bootdevice");
456
457         /* If still no dev_part_str, it's an error */
458         if (!dev_part_str) {
459                 printf("** No device specified **\n");
460                 goto cleanup;
461         }
462
463         /* Separate device and partition ID specification */
464         part_str = strchr(dev_part_str, ':');
465         if (part_str) {
466                 dup_str = strdup(dev_part_str);
467                 dup_str[part_str - dev_part_str] = 0;
468                 dev_str = dup_str;
469                 part_str++;
470         } else {
471                 dev_str = dev_part_str;
472         }
473
474         /* Look up the device */
475         dev = blk_get_device_by_str(ifname, dev_str, dev_desc);
476         if (dev < 0)
477                 goto cleanup;
478
479         /* Convert partition ID string to number */
480         if (!part_str || !*part_str) {
481                 part = PART_UNSPECIFIED;
482         } else if (!strcmp(part_str, "auto")) {
483                 part = PART_AUTO;
484         } else {
485                 /* Something specified -> use exactly that */
486                 part = (int)simple_strtoul(part_str, &ep, 16);
487                 /*
488                  * Less than whole string converted,
489                  * or request for whole device, but caller requires partition.
490                  */
491                 if (*ep || (part == 0 && !allow_whole_dev)) {
492                         printf("** Bad partition specification %s %s **\n",
493                             ifname, dev_part_str);
494                         goto cleanup;
495                 }
496         }
497
498         /*
499          * No partition table on device,
500          * or user requested partition 0 (entire device).
501          */
502         if (((*dev_desc)->part_type == PART_TYPE_UNKNOWN) ||
503             (part == 0)) {
504                 if (!(*dev_desc)->lba) {
505                         printf("** Bad device size - %s %s **\n", ifname,
506                                dev_str);
507                         goto cleanup;
508                 }
509
510                 /*
511                  * If user specified a partition ID other than 0,
512                  * or the calling command only accepts partitions,
513                  * it's an error.
514                  */
515                 if ((part > 0) || (!allow_whole_dev)) {
516                         printf("** No partition table - %s %s **\n", ifname,
517                                dev_str);
518                         goto cleanup;
519                 }
520
521                 (*dev_desc)->log2blksz = LOG2((*dev_desc)->blksz);
522
523                 info->start = 0;
524                 info->size = (*dev_desc)->lba;
525                 info->blksz = (*dev_desc)->blksz;
526                 info->bootable = 0;
527                 strcpy((char *)info->type, BOOT_PART_TYPE);
528                 strcpy((char *)info->name, "Whole Disk");
529 #ifdef CONFIG_PARTITION_UUIDS
530                 info->uuid[0] = 0;
531 #endif
532 #ifdef CONFIG_PARTITION_TYPE_GUID
533                 info->type_guid[0] = 0;
534 #endif
535
536                 ret = 0;
537                 goto cleanup;
538         }
539
540         /*
541          * Now there's known to be a partition table,
542          * not specifying a partition means to pick partition 1.
543          */
544         if (part == PART_UNSPECIFIED)
545                 part = 1;
546
547         /*
548          * If user didn't specify a partition number, or did specify something
549          * other than "auto", use that partition number directly.
550          */
551         if (part != PART_AUTO) {
552                 ret = part_get_info(*dev_desc, part, info);
553                 if (ret) {
554                         printf("** Invalid partition %d **\n", part);
555                         goto cleanup;
556                 }
557         } else {
558                 /*
559                  * Find the first bootable partition.
560                  * If none are bootable, fall back to the first valid partition.
561                  */
562                 part = 0;
563                 for (p = 1; p <= MAX_SEARCH_PARTITIONS; p++) {
564                         ret = part_get_info(*dev_desc, p, info);
565                         if (ret)
566                                 continue;
567
568                         /*
569                          * First valid partition, or new better partition?
570                          * If so, save partition ID.
571                          */
572                         if (!part || info->bootable)
573                                 part = p;
574
575                         /* Best possible partition? Stop searching. */
576                         if (info->bootable)
577                                 break;
578
579                         /*
580                          * We now need to search further for best possible.
581                          * If we what we just queried was the best so far,
582                          * save the info since we over-write it next loop.
583                          */
584                         if (part == p)
585                                 tmpinfo = *info;
586                 }
587                 /* If we found any acceptable partition */
588                 if (part) {
589                         /*
590                          * If we searched all possible partition IDs,
591                          * return the first valid partition we found.
592                          */
593                         if (p == MAX_SEARCH_PARTITIONS + 1)
594                                 *info = tmpinfo;
595                 } else {
596                         printf("** No valid partitions found **\n");
597                         ret = -1;
598                         goto cleanup;
599                 }
600         }
601         if (strncmp((char *)info->type, BOOT_PART_TYPE, sizeof(info->type)) != 0) {
602                 printf("** Invalid partition type \"%.32s\""
603                         " (expect \"" BOOT_PART_TYPE "\")\n",
604                         info->type);
605                 ret  = -1;
606                 goto cleanup;
607         }
608
609         (*dev_desc)->log2blksz = LOG2((*dev_desc)->blksz);
610
611         ret = part;
612         goto cleanup;
613
614 cleanup:
615         free(dup_str);
616         return ret;
617 }
618
619 int part_get_info_by_name(struct blk_desc *dev_desc, const char *name,
620         disk_partition_t *info)
621 {
622         struct part_driver *first_drv =
623                 ll_entry_start(struct part_driver, part_driver);
624         const int n_drvs = ll_entry_count(struct part_driver, part_driver);
625         struct part_driver *part_drv;
626
627         for (part_drv = first_drv; part_drv != first_drv + n_drvs; part_drv++) {
628                 int ret;
629                 int i;
630                 for (i = 1; i < part_drv->max_entries; i++) {
631                         ret = part_drv->get_info(dev_desc, i, info);
632                         if (ret != 0) {
633                                 /* no more entries in table */
634                                 break;
635                         }
636                         if (strcmp(name, (const char *)info->name) == 0) {
637                                 /* matched */
638                                 return 0;
639                         }
640                 }
641         }
642         return -1;
643 }
644
645 void part_set_generic_name(const struct blk_desc *dev_desc,
646         int part_num, char *name)
647 {
648         char *devtype;
649
650         switch (dev_desc->if_type) {
651         case IF_TYPE_IDE:
652         case IF_TYPE_SATA:
653         case IF_TYPE_ATAPI:
654                 devtype = "hd";
655                 break;
656         case IF_TYPE_SCSI:
657                 devtype = "sd";
658                 break;
659         case IF_TYPE_USB:
660                 devtype = "usbd";
661                 break;
662         case IF_TYPE_DOC:
663                 devtype = "docd";
664                 break;
665         case IF_TYPE_MMC:
666         case IF_TYPE_SD:
667                 devtype = "mmcsd";
668                 break;
669         default:
670                 devtype = "xx";
671                 break;
672         }
673
674         sprintf(name, "%s%c%d", devtype, 'a' + dev_desc->devnum, part_num);
675 }