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1 // SPDX-License-Identifier: GPL-2.0
2 /*
3  * Copyright (c) 2012, NVIDIA CORPORATION.  All rights reserved.
4  */
5
6 #define LOG_CATEGORY LOGC_CORE
7
8 #include <command.h>
9 #include <config.h>
10 #include <display_options.h>
11 #include <errno.h>
12 #include <env.h>
13 #include <lmb.h>
14 #include <log.h>
15 #include <malloc.h>
16 #include <mapmem.h>
17 #include <part.h>
18 #include <ext4fs.h>
19 #include <fat.h>
20 #include <fs.h>
21 #include <sandboxfs.h>
22 #include <semihostingfs.h>
23 #include <time.h>
24 #include <ubifs_uboot.h>
25 #include <btrfs.h>
26 #include <asm/global_data.h>
27 #include <asm/io.h>
28 #include <div64.h>
29 #include <linux/math64.h>
30 #include <linux/sizes.h>
31 #include <efi_loader.h>
32 #include <squashfs.h>
33 #include <erofs.h>
34
35 DECLARE_GLOBAL_DATA_PTR;
36
37 static struct blk_desc *fs_dev_desc;
38 static int fs_dev_part;
39 static struct disk_partition fs_partition;
40 static int fs_type = FS_TYPE_ANY;
41
42 void fs_set_type(int type)
43 {
44         fs_type = type;
45 }
46
47 static inline int fs_probe_unsupported(struct blk_desc *fs_dev_desc,
48                                       struct disk_partition *fs_partition)
49 {
50         log_debug("Unrecognized filesystem type\n");
51         return -1;
52 }
53
54 static inline int fs_ls_unsupported(const char *dirname)
55 {
56         return -1;
57 }
58
59 /* generic implementation of ls in terms of opendir/readdir/closedir */
60 __maybe_unused
61 static int fs_ls_generic(const char *dirname)
62 {
63         struct fs_dir_stream *dirs;
64         struct fs_dirent *dent;
65         int nfiles = 0, ndirs = 0;
66
67         dirs = fs_opendir(dirname);
68         if (!dirs)
69                 return -errno;
70
71         while ((dent = fs_readdir(dirs))) {
72                 if (dent->type == FS_DT_DIR) {
73                         printf("            %s/\n", dent->name);
74                         ndirs++;
75                 } else if (dent->type == FS_DT_LNK) {
76                         printf("    <SYM>   %s\n", dent->name);
77                         nfiles++;
78                 } else {
79                         printf(" %8lld   %s\n", dent->size, dent->name);
80                         nfiles++;
81                 }
82         }
83
84         fs_closedir(dirs);
85
86         printf("\n%d file(s), %d dir(s)\n\n", nfiles, ndirs);
87
88         return 0;
89 }
90
91 static inline int fs_exists_unsupported(const char *filename)
92 {
93         return 0;
94 }
95
96 static inline int fs_size_unsupported(const char *filename, loff_t *size)
97 {
98         return -1;
99 }
100
101 static inline int fs_read_unsupported(const char *filename, void *buf,
102                                       loff_t offset, loff_t len,
103                                       loff_t *actread)
104 {
105         return -1;
106 }
107
108 static inline int fs_write_unsupported(const char *filename, void *buf,
109                                       loff_t offset, loff_t len,
110                                       loff_t *actwrite)
111 {
112         return -1;
113 }
114
115 static inline int fs_ln_unsupported(const char *filename, const char *target)
116 {
117         return -1;
118 }
119
120 static inline void fs_close_unsupported(void)
121 {
122 }
123
124 static inline int fs_uuid_unsupported(char *uuid_str)
125 {
126         return -1;
127 }
128
129 static inline int fs_opendir_unsupported(const char *filename,
130                                          struct fs_dir_stream **dirs)
131 {
132         return -EACCES;
133 }
134
135 static inline int fs_unlink_unsupported(const char *filename)
136 {
137         return -1;
138 }
139
140 static inline int fs_mkdir_unsupported(const char *dirname)
141 {
142         return -1;
143 }
144
145 struct fstype_info {
146         int fstype;
147         char *name;
148         /*
149          * Is it legal to pass NULL as .probe()'s  fs_dev_desc parameter? This
150          * should be false in most cases. For "virtual" filesystems which
151          * aren't based on a U-Boot block device (e.g. sandbox), this can be
152          * set to true. This should also be true for the dummy entry at the end
153          * of fstypes[], since that is essentially a "virtual" (non-existent)
154          * filesystem.
155          */
156         bool null_dev_desc_ok;
157         int (*probe)(struct blk_desc *fs_dev_desc,
158                      struct disk_partition *fs_partition);
159         int (*ls)(const char *dirname);
160         int (*exists)(const char *filename);
161         int (*size)(const char *filename, loff_t *size);
162         int (*read)(const char *filename, void *buf, loff_t offset,
163                     loff_t len, loff_t *actread);
164         int (*write)(const char *filename, void *buf, loff_t offset,
165                      loff_t len, loff_t *actwrite);
166         void (*close)(void);
167         int (*uuid)(char *uuid_str);
168         /*
169          * Open a directory stream.  On success return 0 and directory
170          * stream pointer via 'dirsp'.  On error, return -errno.  See
171          * fs_opendir().
172          */
173         int (*opendir)(const char *filename, struct fs_dir_stream **dirsp);
174         /*
175          * Read next entry from directory stream.  On success return 0
176          * and directory entry pointer via 'dentp'.  On error return
177          * -errno.  See fs_readdir().
178          */
179         int (*readdir)(struct fs_dir_stream *dirs, struct fs_dirent **dentp);
180         /* see fs_closedir() */
181         void (*closedir)(struct fs_dir_stream *dirs);
182         int (*unlink)(const char *filename);
183         int (*mkdir)(const char *dirname);
184         int (*ln)(const char *filename, const char *target);
185 };
186
187 static struct fstype_info fstypes[] = {
188 #if CONFIG_IS_ENABLED(FS_FAT)
189         {
190                 .fstype = FS_TYPE_FAT,
191                 .name = "fat",
192                 .null_dev_desc_ok = false,
193                 .probe = fat_set_blk_dev,
194                 .close = fat_close,
195                 .ls = fs_ls_generic,
196                 .exists = fat_exists,
197                 .size = fat_size,
198                 .read = fat_read_file,
199 #if CONFIG_IS_ENABLED(FAT_WRITE)
200                 .write = file_fat_write,
201                 .unlink = fat_unlink,
202                 .mkdir = fat_mkdir,
203 #else
204                 .write = fs_write_unsupported,
205                 .unlink = fs_unlink_unsupported,
206                 .mkdir = fs_mkdir_unsupported,
207 #endif
208                 .uuid = fat_uuid,
209                 .opendir = fat_opendir,
210                 .readdir = fat_readdir,
211                 .closedir = fat_closedir,
212                 .ln = fs_ln_unsupported,
213         },
214 #endif
215
216 #if CONFIG_IS_ENABLED(FS_EXT4)
217         {
218                 .fstype = FS_TYPE_EXT,
219                 .name = "ext4",
220                 .null_dev_desc_ok = false,
221                 .probe = ext4fs_probe,
222                 .close = ext4fs_close,
223                 .ls = ext4fs_ls,
224                 .exists = ext4fs_exists,
225                 .size = ext4fs_size,
226                 .read = ext4_read_file,
227 #ifdef CONFIG_EXT4_WRITE
228                 .write = ext4_write_file,
229                 .ln = ext4fs_create_link,
230 #else
231                 .write = fs_write_unsupported,
232                 .ln = fs_ln_unsupported,
233 #endif
234                 .uuid = ext4fs_uuid,
235                 .opendir = fs_opendir_unsupported,
236                 .unlink = fs_unlink_unsupported,
237                 .mkdir = fs_mkdir_unsupported,
238         },
239 #endif
240 #if IS_ENABLED(CONFIG_SANDBOX) && !IS_ENABLED(CONFIG_SPL_BUILD)
241         {
242                 .fstype = FS_TYPE_SANDBOX,
243                 .name = "sandbox",
244                 .null_dev_desc_ok = true,
245                 .probe = sandbox_fs_set_blk_dev,
246                 .close = sandbox_fs_close,
247                 .ls = sandbox_fs_ls,
248                 .exists = sandbox_fs_exists,
249                 .size = sandbox_fs_size,
250                 .read = fs_read_sandbox,
251                 .write = fs_write_sandbox,
252                 .uuid = fs_uuid_unsupported,
253                 .opendir = fs_opendir_unsupported,
254                 .unlink = fs_unlink_unsupported,
255                 .mkdir = fs_mkdir_unsupported,
256                 .ln = fs_ln_unsupported,
257         },
258 #endif
259 #if CONFIG_IS_ENABLED(SEMIHOSTING)
260         {
261                 .fstype = FS_TYPE_SEMIHOSTING,
262                 .name = "semihosting",
263                 .null_dev_desc_ok = true,
264                 .probe = smh_fs_set_blk_dev,
265                 .close = fs_close_unsupported,
266                 .ls = fs_ls_unsupported,
267                 .exists = fs_exists_unsupported,
268                 .size = smh_fs_size,
269                 .read = smh_fs_read,
270                 .write = smh_fs_write,
271                 .uuid = fs_uuid_unsupported,
272                 .opendir = fs_opendir_unsupported,
273                 .unlink = fs_unlink_unsupported,
274                 .mkdir = fs_mkdir_unsupported,
275                 .ln = fs_ln_unsupported,
276         },
277 #endif
278 #ifndef CONFIG_SPL_BUILD
279 #ifdef CONFIG_CMD_UBIFS
280         {
281                 .fstype = FS_TYPE_UBIFS,
282                 .name = "ubifs",
283                 .null_dev_desc_ok = true,
284                 .probe = ubifs_set_blk_dev,
285                 .close = ubifs_close,
286                 .ls = ubifs_ls,
287                 .exists = ubifs_exists,
288                 .size = ubifs_size,
289                 .read = ubifs_read,
290                 .write = fs_write_unsupported,
291                 .uuid = fs_uuid_unsupported,
292                 .opendir = fs_opendir_unsupported,
293                 .unlink = fs_unlink_unsupported,
294                 .mkdir = fs_mkdir_unsupported,
295                 .ln = fs_ln_unsupported,
296         },
297 #endif
298 #endif
299 #ifndef CONFIG_SPL_BUILD
300 #ifdef CONFIG_FS_BTRFS
301         {
302                 .fstype = FS_TYPE_BTRFS,
303                 .name = "btrfs",
304                 .null_dev_desc_ok = false,
305                 .probe = btrfs_probe,
306                 .close = btrfs_close,
307                 .ls = btrfs_ls,
308                 .exists = btrfs_exists,
309                 .size = btrfs_size,
310                 .read = btrfs_read,
311                 .write = fs_write_unsupported,
312                 .uuid = btrfs_uuid,
313                 .opendir = fs_opendir_unsupported,
314                 .unlink = fs_unlink_unsupported,
315                 .mkdir = fs_mkdir_unsupported,
316                 .ln = fs_ln_unsupported,
317         },
318 #endif
319 #endif
320 #if CONFIG_IS_ENABLED(FS_SQUASHFS)
321         {
322                 .fstype = FS_TYPE_SQUASHFS,
323                 .name = "squashfs",
324                 .null_dev_desc_ok = false,
325                 .probe = sqfs_probe,
326                 .opendir = sqfs_opendir,
327                 .readdir = sqfs_readdir,
328                 .ls = fs_ls_generic,
329                 .read = sqfs_read,
330                 .size = sqfs_size,
331                 .close = sqfs_close,
332                 .closedir = sqfs_closedir,
333                 .exists = sqfs_exists,
334                 .uuid = fs_uuid_unsupported,
335                 .write = fs_write_unsupported,
336                 .ln = fs_ln_unsupported,
337                 .unlink = fs_unlink_unsupported,
338                 .mkdir = fs_mkdir_unsupported,
339         },
340 #endif
341 #if IS_ENABLED(CONFIG_FS_EROFS)
342         {
343                 .fstype = FS_TYPE_EROFS,
344                 .name = "erofs",
345                 .null_dev_desc_ok = false,
346                 .probe = erofs_probe,
347                 .opendir = erofs_opendir,
348                 .readdir = erofs_readdir,
349                 .ls = fs_ls_generic,
350                 .read = erofs_read,
351                 .size = erofs_size,
352                 .close = erofs_close,
353                 .closedir = erofs_closedir,
354                 .exists = erofs_exists,
355                 .uuid = fs_uuid_unsupported,
356                 .write = fs_write_unsupported,
357                 .ln = fs_ln_unsupported,
358                 .unlink = fs_unlink_unsupported,
359                 .mkdir = fs_mkdir_unsupported,
360         },
361 #endif
362         {
363                 .fstype = FS_TYPE_ANY,
364                 .name = "unsupported",
365                 .null_dev_desc_ok = true,
366                 .probe = fs_probe_unsupported,
367                 .close = fs_close_unsupported,
368                 .ls = fs_ls_unsupported,
369                 .exists = fs_exists_unsupported,
370                 .size = fs_size_unsupported,
371                 .read = fs_read_unsupported,
372                 .write = fs_write_unsupported,
373                 .uuid = fs_uuid_unsupported,
374                 .opendir = fs_opendir_unsupported,
375                 .unlink = fs_unlink_unsupported,
376                 .mkdir = fs_mkdir_unsupported,
377                 .ln = fs_ln_unsupported,
378         },
379 };
380
381 static struct fstype_info *fs_get_info(int fstype)
382 {
383         struct fstype_info *info;
384         int i;
385
386         for (i = 0, info = fstypes; i < ARRAY_SIZE(fstypes) - 1; i++, info++) {
387                 if (fstype == info->fstype)
388                         return info;
389         }
390
391         /* Return the 'unsupported' sentinel */
392         return info;
393 }
394
395 /**
396  * fs_get_type() - Get type of current filesystem
397  *
398  * Return: filesystem type
399  *
400  * Returns filesystem type representing the current filesystem, or
401  * FS_TYPE_ANY for any unrecognised filesystem.
402  */
403 int fs_get_type(void)
404 {
405         return fs_type;
406 }
407
408 /**
409  * fs_get_type_name() - Get type of current filesystem
410  *
411  * Return: Pointer to filesystem name
412  *
413  * Returns a string describing the current filesystem, or the sentinel
414  * "unsupported" for any unrecognised filesystem.
415  */
416 const char *fs_get_type_name(void)
417 {
418         return fs_get_info(fs_type)->name;
419 }
420
421 int fs_set_blk_dev(const char *ifname, const char *dev_part_str, int fstype)
422 {
423         struct fstype_info *info;
424         int part, i;
425
426         part = part_get_info_by_dev_and_name_or_num(ifname, dev_part_str, &fs_dev_desc,
427                                                     &fs_partition, 1);
428         if (part < 0)
429                 return -1;
430
431         for (i = 0, info = fstypes; i < ARRAY_SIZE(fstypes); i++, info++) {
432                 if (fstype != FS_TYPE_ANY && info->fstype != FS_TYPE_ANY &&
433                                 fstype != info->fstype)
434                         continue;
435
436                 if (!fs_dev_desc && !info->null_dev_desc_ok)
437                         continue;
438
439                 if (!info->probe(fs_dev_desc, &fs_partition)) {
440                         fs_type = info->fstype;
441                         fs_dev_part = part;
442                         return 0;
443                 }
444         }
445
446         return -1;
447 }
448
449 /* set current blk device w/ blk_desc + partition # */
450 int fs_set_blk_dev_with_part(struct blk_desc *desc, int part)
451 {
452         struct fstype_info *info;
453         int ret, i;
454
455         if (part >= 1)
456                 ret = part_get_info(desc, part, &fs_partition);
457         else
458                 ret = part_get_info_whole_disk(desc, &fs_partition);
459         if (ret)
460                 return ret;
461         fs_dev_desc = desc;
462
463         for (i = 0, info = fstypes; i < ARRAY_SIZE(fstypes); i++, info++) {
464                 if (!info->probe(fs_dev_desc, &fs_partition)) {
465                         fs_type = info->fstype;
466                         fs_dev_part = part;
467                         return 0;
468                 }
469         }
470
471         return -1;
472 }
473
474 void fs_close(void)
475 {
476         struct fstype_info *info = fs_get_info(fs_type);
477
478         info->close();
479
480         fs_type = FS_TYPE_ANY;
481 }
482
483 int fs_uuid(char *uuid_str)
484 {
485         struct fstype_info *info = fs_get_info(fs_type);
486
487         return info->uuid(uuid_str);
488 }
489
490 int fs_ls(const char *dirname)
491 {
492         int ret;
493
494         struct fstype_info *info = fs_get_info(fs_type);
495
496         ret = info->ls(dirname);
497
498         fs_close();
499
500         return ret;
501 }
502
503 int fs_exists(const char *filename)
504 {
505         int ret;
506
507         struct fstype_info *info = fs_get_info(fs_type);
508
509         ret = info->exists(filename);
510
511         fs_close();
512
513         return ret;
514 }
515
516 int fs_size(const char *filename, loff_t *size)
517 {
518         int ret;
519
520         struct fstype_info *info = fs_get_info(fs_type);
521
522         ret = info->size(filename, size);
523
524         fs_close();
525
526         return ret;
527 }
528
529 #ifdef CONFIG_LMB
530 /* Check if a file may be read to the given address */
531 static int fs_read_lmb_check(const char *filename, ulong addr, loff_t offset,
532                              loff_t len, struct fstype_info *info)
533 {
534         struct lmb lmb;
535         int ret;
536         loff_t size;
537         loff_t read_len;
538
539         /* get the actual size of the file */
540         ret = info->size(filename, &size);
541         if (ret)
542                 return ret;
543         if (offset >= size) {
544                 /* offset >= EOF, no bytes will be written */
545                 return 0;
546         }
547         read_len = size - offset;
548
549         /* limit to 'len' if it is smaller */
550         if (len && len < read_len)
551                 read_len = len;
552
553         lmb_init_and_reserve(&lmb, gd->bd, (void *)gd->fdt_blob);
554         lmb_dump_all(&lmb);
555
556         if (lmb_alloc_addr(&lmb, addr, read_len) == addr)
557                 return 0;
558
559         log_err("** Reading file would overwrite reserved memory **\n");
560         return -ENOSPC;
561 }
562 #endif
563
564 static int _fs_read(const char *filename, ulong addr, loff_t offset, loff_t len,
565                     int do_lmb_check, loff_t *actread)
566 {
567         struct fstype_info *info = fs_get_info(fs_type);
568         void *buf;
569         int ret;
570
571 #ifdef CONFIG_LMB
572         if (do_lmb_check) {
573                 ret = fs_read_lmb_check(filename, addr, offset, len, info);
574                 if (ret)
575                         return ret;
576         }
577 #endif
578
579         /*
580          * We don't actually know how many bytes are being read, since len==0
581          * means read the whole file.
582          */
583         buf = map_sysmem(addr, len);
584         ret = info->read(filename, buf, offset, len, actread);
585         unmap_sysmem(buf);
586
587         /* If we requested a specific number of bytes, check we got it */
588         if (ret == 0 && len && *actread != len)
589                 log_debug("** %s shorter than offset + len **\n", filename);
590         fs_close();
591
592         return ret;
593 }
594
595 int fs_read(const char *filename, ulong addr, loff_t offset, loff_t len,
596             loff_t *actread)
597 {
598         return _fs_read(filename, addr, offset, len, 0, actread);
599 }
600
601 int fs_write(const char *filename, ulong addr, loff_t offset, loff_t len,
602              loff_t *actwrite)
603 {
604         struct fstype_info *info = fs_get_info(fs_type);
605         void *buf;
606         int ret;
607
608         buf = map_sysmem(addr, len);
609         ret = info->write(filename, buf, offset, len, actwrite);
610         unmap_sysmem(buf);
611
612         if (ret < 0 && len != *actwrite) {
613                 log_err("** Unable to write file %s **\n", filename);
614                 ret = -1;
615         }
616         fs_close();
617
618         return ret;
619 }
620
621 struct fs_dir_stream *fs_opendir(const char *filename)
622 {
623         struct fstype_info *info = fs_get_info(fs_type);
624         struct fs_dir_stream *dirs = NULL;
625         int ret;
626
627         ret = info->opendir(filename, &dirs);
628         fs_close();
629         if (ret) {
630                 errno = -ret;
631                 return NULL;
632         }
633
634         dirs->desc = fs_dev_desc;
635         dirs->part = fs_dev_part;
636
637         return dirs;
638 }
639
640 struct fs_dirent *fs_readdir(struct fs_dir_stream *dirs)
641 {
642         struct fstype_info *info;
643         struct fs_dirent *dirent;
644         int ret;
645
646         fs_set_blk_dev_with_part(dirs->desc, dirs->part);
647         info = fs_get_info(fs_type);
648
649         ret = info->readdir(dirs, &dirent);
650         fs_close();
651         if (ret) {
652                 errno = -ret;
653                 return NULL;
654         }
655
656         return dirent;
657 }
658
659 void fs_closedir(struct fs_dir_stream *dirs)
660 {
661         struct fstype_info *info;
662
663         if (!dirs)
664                 return;
665
666         fs_set_blk_dev_with_part(dirs->desc, dirs->part);
667         info = fs_get_info(fs_type);
668
669         info->closedir(dirs);
670         fs_close();
671 }
672
673 int fs_unlink(const char *filename)
674 {
675         int ret;
676
677         struct fstype_info *info = fs_get_info(fs_type);
678
679         ret = info->unlink(filename);
680
681         fs_close();
682
683         return ret;
684 }
685
686 int fs_mkdir(const char *dirname)
687 {
688         int ret;
689
690         struct fstype_info *info = fs_get_info(fs_type);
691
692         ret = info->mkdir(dirname);
693
694         fs_close();
695
696         return ret;
697 }
698
699 int fs_ln(const char *fname, const char *target)
700 {
701         struct fstype_info *info = fs_get_info(fs_type);
702         int ret;
703
704         ret = info->ln(fname, target);
705
706         if (ret < 0) {
707                 log_err("** Unable to create link %s -> %s **\n", fname, target);
708                 ret = -1;
709         }
710         fs_close();
711
712         return ret;
713 }
714
715 int do_size(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[],
716             int fstype)
717 {
718         loff_t size;
719
720         if (argc != 4)
721                 return CMD_RET_USAGE;
722
723         if (fs_set_blk_dev(argv[1], argv[2], fstype))
724                 return 1;
725
726         if (fs_size(argv[3], &size) < 0)
727                 return CMD_RET_FAILURE;
728
729         env_set_hex("filesize", size);
730
731         return 0;
732 }
733
734 int do_load(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[],
735             int fstype)
736 {
737         unsigned long addr;
738         const char *addr_str;
739         const char *filename;
740         loff_t bytes;
741         loff_t pos;
742         loff_t len_read;
743         int ret;
744         unsigned long time;
745         char *ep;
746
747         if (argc < 2)
748                 return CMD_RET_USAGE;
749         if (argc > 7)
750                 return CMD_RET_USAGE;
751
752         if (fs_set_blk_dev(argv[1], cmd_arg2(argc, argv), fstype)) {
753                 log_err("Can't set block device\n");
754                 return 1;
755         }
756
757         if (argc >= 4) {
758                 addr = hextoul(argv[3], &ep);
759                 if (ep == argv[3] || *ep != '\0')
760                         return CMD_RET_USAGE;
761         } else {
762                 addr_str = env_get("loadaddr");
763                 if (addr_str != NULL)
764                         addr = hextoul(addr_str, NULL);
765                 else
766                         addr = CONFIG_SYS_LOAD_ADDR;
767         }
768         if (argc >= 5) {
769                 filename = argv[4];
770         } else {
771                 filename = env_get("bootfile");
772                 if (!filename) {
773                         puts("** No boot file defined **\n");
774                         return 1;
775                 }
776         }
777         if (argc >= 6)
778                 bytes = hextoul(argv[5], NULL);
779         else
780                 bytes = 0;
781         if (argc >= 7)
782                 pos = hextoul(argv[6], NULL);
783         else
784                 pos = 0;
785
786         time = get_timer(0);
787         ret = _fs_read(filename, addr, pos, bytes, 1, &len_read);
788         time = get_timer(time);
789         if (ret < 0) {
790                 log_err("Failed to load '%s'\n", filename);
791                 return 1;
792         }
793
794         efi_set_bootdev(argv[1], (argc > 2) ? argv[2] : "",
795                         (argc > 4) ? argv[4] : "", map_sysmem(addr, 0),
796                         len_read);
797
798         printf("%llu bytes read in %lu ms", len_read, time);
799         if (time > 0) {
800                 puts(" (");
801                 print_size(div_u64(len_read, time) * 1000, "/s");
802                 puts(")");
803         }
804         puts("\n");
805
806         env_set_hex("fileaddr", addr);
807         env_set_hex("filesize", len_read);
808
809         return 0;
810 }
811
812 int do_ls(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[],
813           int fstype)
814 {
815         if (argc < 2)
816                 return CMD_RET_USAGE;
817         if (argc > 4)
818                 return CMD_RET_USAGE;
819
820         if (fs_set_blk_dev(argv[1], cmd_arg2(argc, argv), fstype))
821                 return 1;
822
823         if (fs_ls(argc >= 4 ? argv[3] : "/"))
824                 return 1;
825
826         return 0;
827 }
828
829 int file_exists(const char *dev_type, const char *dev_part, const char *file,
830                 int fstype)
831 {
832         if (fs_set_blk_dev(dev_type, dev_part, fstype))
833                 return 0;
834
835         return fs_exists(file);
836 }
837
838 int do_save(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[],
839             int fstype)
840 {
841         unsigned long addr;
842         const char *filename;
843         loff_t bytes;
844         loff_t pos;
845         loff_t len;
846         int ret;
847         unsigned long time;
848
849         if (argc < 6 || argc > 7)
850                 return CMD_RET_USAGE;
851
852         if (fs_set_blk_dev(argv[1], argv[2], fstype))
853                 return 1;
854
855         addr = hextoul(argv[3], NULL);
856         filename = argv[4];
857         bytes = hextoul(argv[5], NULL);
858         if (argc >= 7)
859                 pos = hextoul(argv[6], NULL);
860         else
861                 pos = 0;
862
863         time = get_timer(0);
864         ret = fs_write(filename, addr, pos, bytes, &len);
865         time = get_timer(time);
866         if (ret < 0)
867                 return 1;
868
869         printf("%llu bytes written in %lu ms", len, time);
870         if (time > 0) {
871                 puts(" (");
872                 print_size(div_u64(len, time) * 1000, "/s");
873                 puts(")");
874         }
875         puts("\n");
876
877         return 0;
878 }
879
880 int do_fs_uuid(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[],
881                int fstype)
882 {
883         int ret;
884         char uuid[37];
885         memset(uuid, 0, sizeof(uuid));
886
887         if (argc < 3 || argc > 4)
888                 return CMD_RET_USAGE;
889
890         if (fs_set_blk_dev(argv[1], argv[2], fstype))
891                 return 1;
892
893         ret = fs_uuid(uuid);
894         if (ret)
895                 return CMD_RET_FAILURE;
896
897         if (argc == 4)
898                 env_set(argv[3], uuid);
899         else
900                 printf("%s\n", uuid);
901
902         return CMD_RET_SUCCESS;
903 }
904
905 int do_fs_type(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
906 {
907         struct fstype_info *info;
908
909         if (argc < 3 || argc > 4)
910                 return CMD_RET_USAGE;
911
912         if (fs_set_blk_dev(argv[1], argv[2], FS_TYPE_ANY))
913                 return 1;
914
915         info = fs_get_info(fs_type);
916
917         if (argc == 4)
918                 env_set(argv[3], info->name);
919         else
920                 printf("%s\n", info->name);
921
922         fs_close();
923
924         return CMD_RET_SUCCESS;
925 }
926
927 int do_rm(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[],
928           int fstype)
929 {
930         if (argc != 4)
931                 return CMD_RET_USAGE;
932
933         if (fs_set_blk_dev(argv[1], argv[2], fstype))
934                 return 1;
935
936         if (fs_unlink(argv[3]))
937                 return 1;
938
939         return 0;
940 }
941
942 int do_mkdir(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[],
943              int fstype)
944 {
945         int ret;
946
947         if (argc != 4)
948                 return CMD_RET_USAGE;
949
950         if (fs_set_blk_dev(argv[1], argv[2], fstype))
951                 return 1;
952
953         ret = fs_mkdir(argv[3]);
954         if (ret) {
955                 log_err("** Unable to create a directory \"%s\" **\n", argv[3]);
956                 return 1;
957         }
958
959         return 0;
960 }
961
962 int do_ln(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[],
963           int fstype)
964 {
965         if (argc != 5)
966                 return CMD_RET_USAGE;
967
968         if (fs_set_blk_dev(argv[1], argv[2], fstype))
969                 return 1;
970
971         if (fs_ln(argv[3], argv[4]))
972                 return 1;
973
974         return 0;
975 }
976
977 int do_fs_types(struct cmd_tbl *cmdtp, int flag, int argc, char * const argv[])
978 {
979         struct fstype_info *drv = fstypes;
980         const int n_ents = ARRAY_SIZE(fstypes);
981         struct fstype_info *entry;
982         int i = 0;
983
984         puts("Supported filesystems");
985         for (entry = drv; entry != drv + n_ents; entry++) {
986                 if (entry->fstype != FS_TYPE_ANY) {
987                         printf("%c %s", i ? ',' : ':', entry->name);
988                         i++;
989                 }
990         }
991         if (!i)
992                 puts(": <none>");
993         puts("\n");
994         return CMD_RET_SUCCESS;
995 }
996
997 int fs_read_alloc(const char *fname, ulong size, uint align, void **bufp)
998 {
999         loff_t bytes_read;
1000         ulong addr;
1001         char *buf;
1002         int ret;
1003
1004         buf = memalign(align, size + 1);
1005         if (!buf)
1006                 return log_msg_ret("buf", -ENOMEM);
1007         addr = map_to_sysmem(buf);
1008
1009         ret = fs_read(fname, addr, 0, size, &bytes_read);
1010         if (ret) {
1011                 free(buf);
1012                 return log_msg_ret("read", ret);
1013         }
1014         if (size != bytes_read)
1015                 return log_msg_ret("bread", -EIO);
1016         buf[size] = '\0';
1017
1018         *bufp = buf;
1019
1020         return 0;
1021 }
1022
1023 int fs_load_alloc(const char *ifname, const char *dev_part_str,
1024                   const char *fname, ulong max_size, ulong align, void **bufp,
1025                   ulong *sizep)
1026 {
1027         loff_t size;
1028         void *buf;
1029         int ret;
1030
1031         if (fs_set_blk_dev(ifname, dev_part_str, FS_TYPE_ANY))
1032                 return log_msg_ret("set", -ENOMEDIUM);
1033
1034         ret = fs_size(fname, &size);
1035         if (ret)
1036                 return log_msg_ret("sz", -ENOENT);
1037
1038         if (size >= (max_size ?: SZ_1G))
1039                 return log_msg_ret("sz", -E2BIG);
1040
1041         if (fs_set_blk_dev(ifname, dev_part_str, FS_TYPE_ANY))
1042                 return log_msg_ret("set", -ENOMEDIUM);
1043
1044         ret = fs_read_alloc(fname, size, align, &buf);
1045         if (ret)
1046                 return log_msg_ret("al", ret);
1047         *sizep = size;
1048         *bufp = buf;
1049
1050         return 0;
1051 }
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