Merge branch 'u-boot-sunxi/master' into 'u-boot-arm/master'
[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 <ide.h>
11 #include <malloc.h>
12 #include <part.h>
13
14 #undef  PART_DEBUG
15
16 #ifdef  PART_DEBUG
17 #define PRINTF(fmt,args...)     printf (fmt ,##args)
18 #else
19 #define PRINTF(fmt,args...)
20 #endif
21
22 struct block_drvr {
23         char *name;
24         block_dev_desc_t* (*get_dev)(int dev);
25         int (*select_hwpart)(int dev_num, int hwpart);
26 };
27
28 static const struct block_drvr block_drvr[] = {
29 #if defined(CONFIG_CMD_IDE)
30         { .name = "ide", .get_dev = ide_get_dev, },
31 #endif
32 #if defined(CONFIG_CMD_SATA)
33         {.name = "sata", .get_dev = sata_get_dev, },
34 #endif
35 #if defined(CONFIG_CMD_SCSI)
36         { .name = "scsi", .get_dev = scsi_get_dev, },
37 #endif
38 #if defined(CONFIG_CMD_USB) && defined(CONFIG_USB_STORAGE)
39         { .name = "usb", .get_dev = usb_stor_get_dev, },
40 #endif
41 #if defined(CONFIG_MMC)
42         {
43                 .name = "mmc",
44                 .get_dev = mmc_get_dev,
45                 .select_hwpart = mmc_select_hwpart,
46         },
47 #endif
48 #if defined(CONFIG_SYSTEMACE)
49         { .name = "ace", .get_dev = systemace_get_dev, },
50 #endif
51 #if defined(CONFIG_SANDBOX)
52         { .name = "host", .get_dev = host_get_dev, },
53 #endif
54         { },
55 };
56
57 DECLARE_GLOBAL_DATA_PTR;
58
59 #ifdef HAVE_BLOCK_DEVICE
60 block_dev_desc_t *get_dev_hwpart(const char *ifname, int dev, int hwpart)
61 {
62         const struct block_drvr *drvr = block_drvr;
63         block_dev_desc_t* (*reloc_get_dev)(int dev);
64         int (*select_hwpart)(int dev_num, int hwpart);
65         char *name;
66         int ret;
67
68         if (!ifname)
69                 return NULL;
70
71         name = drvr->name;
72 #ifdef CONFIG_NEEDS_MANUAL_RELOC
73         name += gd->reloc_off;
74 #endif
75         while (drvr->name) {
76                 name = drvr->name;
77                 reloc_get_dev = drvr->get_dev;
78                 select_hwpart = drvr->select_hwpart;
79 #ifdef CONFIG_NEEDS_MANUAL_RELOC
80                 name += gd->reloc_off;
81                 reloc_get_dev += gd->reloc_off;
82                 if (select_hwpart)
83                         select_hwpart += gd->reloc_off;
84 #endif
85                 if (strncmp(ifname, name, strlen(name)) == 0) {
86                         block_dev_desc_t *dev_desc = reloc_get_dev(dev);
87                         if (!dev_desc)
88                                 return NULL;
89                         if (hwpart == 0 && !select_hwpart)
90                                 return dev_desc;
91                         if (!select_hwpart)
92                                 return NULL;
93                         ret = select_hwpart(dev_desc->dev, hwpart);
94                         if (ret < 0)
95                                 return NULL;
96                         return dev_desc;
97                 }
98                 drvr++;
99         }
100         return NULL;
101 }
102
103 block_dev_desc_t *get_dev(const char *ifname, int dev)
104 {
105         return get_dev_hwpart(ifname, dev, 0);
106 }
107 #else
108 block_dev_desc_t *get_dev_hwpart(const char *ifname, int dev, int hwpart)
109 {
110         return NULL;
111 }
112
113 block_dev_desc_t *get_dev(const char *ifname, int dev)
114 {
115         return NULL;
116 }
117 #endif
118
119 #ifdef HAVE_BLOCK_DEVICE
120
121 /* ------------------------------------------------------------------------- */
122 /*
123  * reports device info to the user
124  */
125
126 #ifdef CONFIG_LBA48
127 typedef uint64_t lba512_t;
128 #else
129 typedef lbaint_t lba512_t;
130 #endif
131
132 /*
133  * Overflowless variant of (block_count * mul_by / div_by)
134  * when div_by > mul_by
135  */
136 static lba512_t lba512_muldiv (lba512_t block_count, lba512_t mul_by, lba512_t div_by)
137 {
138         lba512_t bc_quot, bc_rem;
139
140         /* x * m / d == x / d * m + (x % d) * m / d */
141         bc_quot = block_count / div_by;
142         bc_rem  = block_count - div_by * bc_quot;
143         return bc_quot * mul_by + (bc_rem * mul_by) / div_by;
144 }
145
146 void dev_print (block_dev_desc_t *dev_desc)
147 {
148         lba512_t lba512; /* number of blocks if 512bytes block size */
149
150         if (dev_desc->type == DEV_TYPE_UNKNOWN) {
151                 puts ("not available\n");
152                 return;
153         }
154
155         switch (dev_desc->if_type) {
156         case IF_TYPE_SCSI:
157                 printf ("(%d:%d) Vendor: %s Prod.: %s Rev: %s\n",
158                         dev_desc->target,dev_desc->lun,
159                         dev_desc->vendor,
160                         dev_desc->product,
161                         dev_desc->revision);
162                 break;
163         case IF_TYPE_ATAPI:
164         case IF_TYPE_IDE:
165         case IF_TYPE_SATA:
166                 printf ("Model: %s Firm: %s Ser#: %s\n",
167                         dev_desc->vendor,
168                         dev_desc->revision,
169                         dev_desc->product);
170                 break;
171         case IF_TYPE_SD:
172         case IF_TYPE_MMC:
173         case IF_TYPE_USB:
174                 printf ("Vendor: %s Rev: %s Prod: %s\n",
175                         dev_desc->vendor,
176                         dev_desc->revision,
177                         dev_desc->product);
178                 break;
179         case IF_TYPE_DOC:
180                 puts("device type DOC\n");
181                 return;
182         case IF_TYPE_UNKNOWN:
183                 puts("device type unknown\n");
184                 return;
185         default:
186                 printf("Unhandled device type: %i\n", dev_desc->if_type);
187                 return;
188         }
189         puts ("            Type: ");
190         if (dev_desc->removable)
191                 puts ("Removable ");
192         switch (dev_desc->type & 0x1F) {
193         case DEV_TYPE_HARDDISK:
194                 puts ("Hard Disk");
195                 break;
196         case DEV_TYPE_CDROM:
197                 puts ("CD ROM");
198                 break;
199         case DEV_TYPE_OPDISK:
200                 puts ("Optical Device");
201                 break;
202         case DEV_TYPE_TAPE:
203                 puts ("Tape");
204                 break;
205         default:
206                 printf ("# %02X #", dev_desc->type & 0x1F);
207                 break;
208         }
209         puts ("\n");
210         if (dev_desc->lba > 0L && dev_desc->blksz > 0L) {
211                 ulong mb, mb_quot, mb_rem, gb, gb_quot, gb_rem;
212                 lbaint_t lba;
213
214                 lba = dev_desc->lba;
215
216                 lba512 = (lba * (dev_desc->blksz/512));
217                 /* round to 1 digit */
218                 mb = lba512_muldiv(lba512, 10, 2048);   /* 2048 = (1024 * 1024) / 512 MB */
219
220                 mb_quot = mb / 10;
221                 mb_rem  = mb - (10 * mb_quot);
222
223                 gb = mb / 1024;
224                 gb_quot = gb / 10;
225                 gb_rem  = gb - (10 * gb_quot);
226 #ifdef CONFIG_LBA48
227                 if (dev_desc->lba48)
228                         printf ("            Supports 48-bit addressing\n");
229 #endif
230 #if defined(CONFIG_SYS_64BIT_LBA)
231                 printf ("            Capacity: %ld.%ld MB = %ld.%ld GB (%Ld x %ld)\n",
232                         mb_quot, mb_rem,
233                         gb_quot, gb_rem,
234                         lba,
235                         dev_desc->blksz);
236 #else
237                 printf ("            Capacity: %ld.%ld MB = %ld.%ld GB (%ld x %ld)\n",
238                         mb_quot, mb_rem,
239                         gb_quot, gb_rem,
240                         (ulong)lba,
241                         dev_desc->blksz);
242 #endif
243         } else {
244                 puts ("            Capacity: not available\n");
245         }
246 }
247 #endif
248
249 #ifdef HAVE_BLOCK_DEVICE
250
251 void init_part (block_dev_desc_t * dev_desc)
252 {
253 #ifdef CONFIG_ISO_PARTITION
254         if (test_part_iso(dev_desc) == 0) {
255                 dev_desc->part_type = PART_TYPE_ISO;
256                 return;
257         }
258 #endif
259
260 #ifdef CONFIG_MAC_PARTITION
261         if (test_part_mac(dev_desc) == 0) {
262                 dev_desc->part_type = PART_TYPE_MAC;
263                 return;
264         }
265 #endif
266
267 /* must be placed before DOS partition detection */
268 #ifdef CONFIG_EFI_PARTITION
269         if (test_part_efi(dev_desc) == 0) {
270                 dev_desc->part_type = PART_TYPE_EFI;
271                 return;
272         }
273 #endif
274
275 #ifdef CONFIG_DOS_PARTITION
276         if (test_part_dos(dev_desc) == 0) {
277                 dev_desc->part_type = PART_TYPE_DOS;
278                 return;
279         }
280 #endif
281
282 #ifdef CONFIG_AMIGA_PARTITION
283         if (test_part_amiga(dev_desc) == 0) {
284             dev_desc->part_type = PART_TYPE_AMIGA;
285             return;
286         }
287 #endif
288         dev_desc->part_type = PART_TYPE_UNKNOWN;
289 }
290
291
292 #if defined(CONFIG_MAC_PARTITION) || \
293         defined(CONFIG_DOS_PARTITION) || \
294         defined(CONFIG_ISO_PARTITION) || \
295         defined(CONFIG_AMIGA_PARTITION) || \
296         defined(CONFIG_EFI_PARTITION)
297
298 static void print_part_header (const char *type, block_dev_desc_t * dev_desc)
299 {
300         puts ("\nPartition Map for ");
301         switch (dev_desc->if_type) {
302         case IF_TYPE_IDE:
303                 puts ("IDE");
304                 break;
305         case IF_TYPE_SATA:
306                 puts ("SATA");
307                 break;
308         case IF_TYPE_SCSI:
309                 puts ("SCSI");
310                 break;
311         case IF_TYPE_ATAPI:
312                 puts ("ATAPI");
313                 break;
314         case IF_TYPE_USB:
315                 puts ("USB");
316                 break;
317         case IF_TYPE_DOC:
318                 puts ("DOC");
319                 break;
320         case IF_TYPE_MMC:
321                 puts ("MMC");
322                 break;
323         case IF_TYPE_HOST:
324                 puts("HOST");
325                 break;
326         default:
327                 puts ("UNKNOWN");
328                 break;
329         }
330         printf (" device %d  --   Partition Type: %s\n\n",
331                         dev_desc->dev, type);
332 }
333
334 #endif /* any CONFIG_..._PARTITION */
335
336 void print_part(block_dev_desc_t * dev_desc)
337 {
338
339                 switch (dev_desc->part_type) {
340 #ifdef CONFIG_MAC_PARTITION
341         case PART_TYPE_MAC:
342                 PRINTF ("## Testing for valid MAC partition ##\n");
343                 print_part_header ("MAC", dev_desc);
344                 print_part_mac (dev_desc);
345                 return;
346 #endif
347 #ifdef CONFIG_DOS_PARTITION
348         case PART_TYPE_DOS:
349                 PRINTF ("## Testing for valid DOS partition ##\n");
350                 print_part_header ("DOS", dev_desc);
351                 print_part_dos (dev_desc);
352                 return;
353 #endif
354
355 #ifdef CONFIG_ISO_PARTITION
356         case PART_TYPE_ISO:
357                 PRINTF ("## Testing for valid ISO Boot partition ##\n");
358                 print_part_header ("ISO", dev_desc);
359                 print_part_iso (dev_desc);
360                 return;
361 #endif
362
363 #ifdef CONFIG_AMIGA_PARTITION
364         case PART_TYPE_AMIGA:
365             PRINTF ("## Testing for a valid Amiga partition ##\n");
366             print_part_header ("AMIGA", dev_desc);
367             print_part_amiga (dev_desc);
368             return;
369 #endif
370
371 #ifdef CONFIG_EFI_PARTITION
372         case PART_TYPE_EFI:
373                 PRINTF ("## Testing for valid EFI partition ##\n");
374                 print_part_header ("EFI", dev_desc);
375                 print_part_efi (dev_desc);
376                 return;
377 #endif
378         }
379         puts ("## Unknown partition table\n");
380 }
381
382 #endif /* HAVE_BLOCK_DEVICE */
383
384 int get_partition_info(block_dev_desc_t *dev_desc, int part,
385                        disk_partition_t *info)
386 {
387 #ifdef HAVE_BLOCK_DEVICE
388
389 #ifdef CONFIG_PARTITION_UUIDS
390         /* The common case is no UUID support */
391         info->uuid[0] = 0;
392 #endif
393
394         switch (dev_desc->part_type) {
395 #ifdef CONFIG_MAC_PARTITION
396         case PART_TYPE_MAC:
397                 if (get_partition_info_mac(dev_desc, part, info) == 0) {
398                         PRINTF("## Valid MAC partition found ##\n");
399                         return 0;
400                 }
401                 break;
402 #endif
403
404 #ifdef CONFIG_DOS_PARTITION
405         case PART_TYPE_DOS:
406                 if (get_partition_info_dos(dev_desc, part, info) == 0) {
407                         PRINTF("## Valid DOS partition found ##\n");
408                         return 0;
409                 }
410                 break;
411 #endif
412
413 #ifdef CONFIG_ISO_PARTITION
414         case PART_TYPE_ISO:
415                 if (get_partition_info_iso(dev_desc, part, info) == 0) {
416                         PRINTF("## Valid ISO boot partition found ##\n");
417                         return 0;
418                 }
419                 break;
420 #endif
421
422 #ifdef CONFIG_AMIGA_PARTITION
423         case PART_TYPE_AMIGA:
424                 if (get_partition_info_amiga(dev_desc, part, info) == 0) {
425                         PRINTF("## Valid Amiga partition found ##\n");
426                         return 0;
427                 }
428                 break;
429 #endif
430
431 #ifdef CONFIG_EFI_PARTITION
432         case PART_TYPE_EFI:
433                 if (get_partition_info_efi(dev_desc, part, info) == 0) {
434                         PRINTF("## Valid EFI partition found ##\n");
435                         return 0;
436                 }
437                 break;
438 #endif
439         default:
440                 break;
441         }
442 #endif /* HAVE_BLOCK_DEVICE */
443
444         return -1;
445 }
446
447 int get_device(const char *ifname, const char *dev_hwpart_str,
448                block_dev_desc_t **dev_desc)
449 {
450         char *ep;
451         char *dup_str = NULL;
452         const char *dev_str, *hwpart_str;
453         int dev, hwpart;
454
455         hwpart_str = strchr(dev_hwpart_str, '.');
456         if (hwpart_str) {
457                 dup_str = strdup(dev_hwpart_str);
458                 dup_str[hwpart_str - dev_hwpart_str] = 0;
459                 dev_str = dup_str;
460                 hwpart_str++;
461         } else {
462                 dev_str = dev_hwpart_str;
463                 hwpart = 0;
464         }
465
466         dev = simple_strtoul(dev_str, &ep, 16);
467         if (*ep) {
468                 printf("** Bad device specification %s %s **\n",
469                        ifname, dev_str);
470                 dev = -1;
471                 goto cleanup;
472         }
473
474         if (hwpart_str) {
475                 hwpart = simple_strtoul(hwpart_str, &ep, 16);
476                 if (*ep) {
477                         printf("** Bad HW partition specification %s %s **\n",
478                             ifname, hwpart_str);
479                         dev = -1;
480                         goto cleanup;
481                 }
482         }
483
484         *dev_desc = get_dev_hwpart(ifname, dev, hwpart);
485         if (!(*dev_desc) || ((*dev_desc)->type == DEV_TYPE_UNKNOWN)) {
486                 printf("** Bad device %s %s **\n", ifname, dev_hwpart_str);
487                 dev = -1;
488                 goto cleanup;
489         }
490
491 cleanup:
492         free(dup_str);
493         return dev;
494 }
495
496 #define PART_UNSPECIFIED -2
497 #define PART_AUTO -1
498 #define MAX_SEARCH_PARTITIONS 16
499 int get_device_and_partition(const char *ifname, const char *dev_part_str,
500                              block_dev_desc_t **dev_desc,
501                              disk_partition_t *info, int allow_whole_dev)
502 {
503         int ret = -1;
504         const char *part_str;
505         char *dup_str = NULL;
506         const char *dev_str;
507         int dev;
508         char *ep;
509         int p;
510         int part;
511         disk_partition_t tmpinfo;
512
513         /*
514          * Special-case a pseudo block device "hostfs", to allow access to the
515          * host's own filesystem.
516          */
517         if (0 == strcmp(ifname, "hostfs")) {
518                 *dev_desc = NULL;
519                 info->start = 0;
520                 info->size = 0;
521                 info->blksz = 0;
522                 info->bootable = 0;
523                 strcpy((char *)info->type, BOOT_PART_TYPE);
524                 strcpy((char *)info->name, "Sandbox host");
525 #ifdef CONFIG_PARTITION_UUIDS
526                 info->uuid[0] = 0;
527 #endif
528
529                 return 0;
530         }
531
532         /* If no dev_part_str, use bootdevice environment variable */
533         if (!dev_part_str || !strlen(dev_part_str) ||
534             !strcmp(dev_part_str, "-"))
535                 dev_part_str = getenv("bootdevice");
536
537         /* If still no dev_part_str, it's an error */
538         if (!dev_part_str) {
539                 printf("** No device specified **\n");
540                 goto cleanup;
541         }
542
543         /* Separate device and partition ID specification */
544         part_str = strchr(dev_part_str, ':');
545         if (part_str) {
546                 dup_str = strdup(dev_part_str);
547                 dup_str[part_str - dev_part_str] = 0;
548                 dev_str = dup_str;
549                 part_str++;
550         } else {
551                 dev_str = dev_part_str;
552         }
553
554         /* Look up the device */
555         dev = get_device(ifname, dev_str, dev_desc);
556         if (dev < 0)
557                 goto cleanup;
558
559         /* Convert partition ID string to number */
560         if (!part_str || !*part_str) {
561                 part = PART_UNSPECIFIED;
562         } else if (!strcmp(part_str, "auto")) {
563                 part = PART_AUTO;
564         } else {
565                 /* Something specified -> use exactly that */
566                 part = (int)simple_strtoul(part_str, &ep, 16);
567                 /*
568                  * Less than whole string converted,
569                  * or request for whole device, but caller requires partition.
570                  */
571                 if (*ep || (part == 0 && !allow_whole_dev)) {
572                         printf("** Bad partition specification %s %s **\n",
573                             ifname, dev_part_str);
574                         goto cleanup;
575                 }
576         }
577
578         /*
579          * No partition table on device,
580          * or user requested partition 0 (entire device).
581          */
582         if (((*dev_desc)->part_type == PART_TYPE_UNKNOWN) ||
583             (part == 0)) {
584                 if (!(*dev_desc)->lba) {
585                         printf("** Bad device size - %s %s **\n", ifname,
586                                dev_str);
587                         goto cleanup;
588                 }
589
590                 /*
591                  * If user specified a partition ID other than 0,
592                  * or the calling command only accepts partitions,
593                  * it's an error.
594                  */
595                 if ((part > 0) || (!allow_whole_dev)) {
596                         printf("** No partition table - %s %s **\n", ifname,
597                                dev_str);
598                         goto cleanup;
599                 }
600
601                 (*dev_desc)->log2blksz = LOG2((*dev_desc)->blksz);
602
603                 info->start = 0;
604                 info->size = (*dev_desc)->lba;
605                 info->blksz = (*dev_desc)->blksz;
606                 info->bootable = 0;
607                 strcpy((char *)info->type, BOOT_PART_TYPE);
608                 strcpy((char *)info->name, "Whole Disk");
609 #ifdef CONFIG_PARTITION_UUIDS
610                 info->uuid[0] = 0;
611 #endif
612
613                 ret = 0;
614                 goto cleanup;
615         }
616
617         /*
618          * Now there's known to be a partition table,
619          * not specifying a partition means to pick partition 1.
620          */
621         if (part == PART_UNSPECIFIED)
622                 part = 1;
623
624         /*
625          * If user didn't specify a partition number, or did specify something
626          * other than "auto", use that partition number directly.
627          */
628         if (part != PART_AUTO) {
629                 ret = get_partition_info(*dev_desc, part, info);
630                 if (ret) {
631                         printf("** Invalid partition %d **\n", part);
632                         goto cleanup;
633                 }
634         } else {
635                 /*
636                  * Find the first bootable partition.
637                  * If none are bootable, fall back to the first valid partition.
638                  */
639                 part = 0;
640                 for (p = 1; p <= MAX_SEARCH_PARTITIONS; p++) {
641                         ret = get_partition_info(*dev_desc, p, info);
642                         if (ret)
643                                 continue;
644
645                         /*
646                          * First valid partition, or new better partition?
647                          * If so, save partition ID.
648                          */
649                         if (!part || info->bootable)
650                                 part = p;
651
652                         /* Best possible partition? Stop searching. */
653                         if (info->bootable)
654                                 break;
655
656                         /*
657                          * We now need to search further for best possible.
658                          * If we what we just queried was the best so far,
659                          * save the info since we over-write it next loop.
660                          */
661                         if (part == p)
662                                 tmpinfo = *info;
663                 }
664                 /* If we found any acceptable partition */
665                 if (part) {
666                         /*
667                          * If we searched all possible partition IDs,
668                          * return the first valid partition we found.
669                          */
670                         if (p == MAX_SEARCH_PARTITIONS + 1)
671                                 *info = tmpinfo;
672                 } else {
673                         printf("** No valid partitions found **\n");
674                         ret = -1;
675                         goto cleanup;
676                 }
677         }
678         if (strncmp((char *)info->type, BOOT_PART_TYPE, sizeof(info->type)) != 0) {
679                 printf("** Invalid partition type \"%.32s\""
680                         " (expect \"" BOOT_PART_TYPE "\")\n",
681                         info->type);
682                 ret  = -1;
683                 goto cleanup;
684         }
685
686         (*dev_desc)->log2blksz = LOG2((*dev_desc)->blksz);
687
688         ret = part;
689         goto cleanup;
690
691 cleanup:
692         free(dup_str);
693         return ret;
694 }