fs/fs.c

   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 <common.h>
  13 #include <env.h>
  14 #include <lmb.h>
  15 #include <log.h>
  16 #include <malloc.h>
  17 #include <mapmem.h>
  18 #include <part.h>
  19 #include <ext4fs.h>
  20 #include <fat.h>
  21 #include <fs.h>
  22 #include <sandboxfs.h>
  23 #include <semihostingfs.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_CMD_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 #ifdef CONFIG_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], (argc >= 3) ? argv[2] : NULL, 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         if (IS_ENABLED(CONFIG_CMD_BOOTEFI))
 795                 efi_set_bootdev(argv[1], (argc > 2) ? argv[2] : "",
 796                                 (argc > 4) ? argv[4] : "", map_sysmem(addr, 0),
 797                                 len_read);
 798
 799         printf("%llu bytes read in %lu ms", len_read, time);
 800         if (time > 0) {
 801                 puts(" (");
 802                 print_size(div_u64(len_read, time) * 1000, "/s");
 803                 puts(")");
 804         }
 805         puts("\n");
 806
 807         env_set_hex("fileaddr", addr);
 808         env_set_hex("filesize", len_read);
 809
 810         return 0;
 811 }
 812
 813 int do_ls(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[],
 814           int fstype)
 815 {
 816         if (argc < 2)
 817                 return CMD_RET_USAGE;
 818         if (argc > 4)
 819                 return CMD_RET_USAGE;
 820
 821         if (fs_set_blk_dev(argv[1], (argc >= 3) ? argv[2] : NULL, fstype))
 822                 return 1;
 823
 824         if (fs_ls(argc >= 4 ? argv[3] : "/"))
 825                 return 1;
 826
 827         return 0;
 828 }
 829
 830 int file_exists(const char *dev_type, const char *dev_part, const char *file,
 831                 int fstype)
 832 {
 833         if (fs_set_blk_dev(dev_type, dev_part, fstype))
 834                 return 0;
 835
 836         return fs_exists(file);
 837 }
 838
 839 int do_save(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[],
 840             int fstype)
 841 {
 842         unsigned long addr;
 843         const char *filename;
 844         loff_t bytes;
 845         loff_t pos;
 846         loff_t len;
 847         int ret;
 848         unsigned long time;
 849
 850         if (argc < 6 || argc > 7)
 851                 return CMD_RET_USAGE;
 852
 853         if (fs_set_blk_dev(argv[1], argv[2], fstype))
 854                 return 1;
 855
 856         addr = hextoul(argv[3], NULL);
 857         filename = argv[4];
 858         bytes = hextoul(argv[5], NULL);
 859         if (argc >= 7)
 860                 pos = hextoul(argv[6], NULL);
 861         else
 862                 pos = 0;
 863
 864         time = get_timer(0);
 865         ret = fs_write(filename, addr, pos, bytes, &len);
 866         time = get_timer(time);
 867         if (ret < 0)
 868                 return 1;
 869
 870         printf("%llu bytes written in %lu ms", len, time);
 871         if (time > 0) {
 872                 puts(" (");
 873                 print_size(div_u64(len, time) * 1000, "/s");
 874                 puts(")");
 875         }
 876         puts("\n");
 877
 878         return 0;
 879 }
 880
 881 int do_fs_uuid(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[],
 882                int fstype)
 883 {
 884         int ret;
 885         char uuid[37];
 886         memset(uuid, 0, sizeof(uuid));
 887
 888         if (argc < 3 || argc > 4)
 889                 return CMD_RET_USAGE;
 890
 891         if (fs_set_blk_dev(argv[1], argv[2], fstype))
 892                 return 1;
 893
 894         ret = fs_uuid(uuid);
 895         if (ret)
 896                 return CMD_RET_FAILURE;
 897
 898         if (argc == 4)
 899                 env_set(argv[3], uuid);
 900         else
 901                 printf("%s\n", uuid);
 902
 903         return CMD_RET_SUCCESS;
 904 }
 905
 906 int do_fs_type(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
 907 {
 908         struct fstype_info *info;
 909
 910         if (argc < 3 || argc > 4)
 911                 return CMD_RET_USAGE;
 912
 913         if (fs_set_blk_dev(argv[1], argv[2], FS_TYPE_ANY))
 914                 return 1;
 915
 916         info = fs_get_info(fs_type);
 917
 918         if (argc == 4)
 919                 env_set(argv[3], info->name);
 920         else
 921                 printf("%s\n", info->name);
 922
 923         fs_close();
 924
 925         return CMD_RET_SUCCESS;
 926 }
 927
 928 int do_rm(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[],
 929           int fstype)
 930 {
 931         if (argc != 4)
 932                 return CMD_RET_USAGE;
 933
 934         if (fs_set_blk_dev(argv[1], argv[2], fstype))
 935                 return 1;
 936
 937         if (fs_unlink(argv[3]))
 938                 return 1;
 939
 940         return 0;
 941 }
 942
 943 int do_mkdir(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[],
 944              int fstype)
 945 {
 946         int ret;
 947
 948         if (argc != 4)
 949                 return CMD_RET_USAGE;
 950
 951         if (fs_set_blk_dev(argv[1], argv[2], fstype))
 952                 return 1;
 953
 954         ret = fs_mkdir(argv[3]);
 955         if (ret) {
 956                 log_err("** Unable to create a directory \"%s\" **\n", argv[3]);
 957                 return 1;
 958         }
 959
 960         return 0;
 961 }
 962
 963 int do_ln(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[],
 964           int fstype)
 965 {
 966         if (argc != 5)
 967                 return CMD_RET_USAGE;
 968
 969         if (fs_set_blk_dev(argv[1], argv[2], fstype))
 970                 return 1;
 971
 972         if (fs_ln(argv[3], argv[4]))
 973                 return 1;
 974
 975         return 0;
 976 }
 977
 978 int do_fs_types(struct cmd_tbl *cmdtp, int flag, int argc, char * const argv[])
 979 {
 980         struct fstype_info *drv = fstypes;
 981         const int n_ents = ARRAY_SIZE(fstypes);
 982         struct fstype_info *entry;
 983         int i = 0;
 984
 985         puts("Supported filesystems");
 986         for (entry = drv; entry != drv + n_ents; entry++) {
 987                 if (entry->fstype != FS_TYPE_ANY) {
 988                         printf("%c %s", i ? ',' : ':', entry->name);
 989                         i++;
 990                 }
 991         }
 992         if (!i)
 993                 puts(": <none>");
 994         puts("\n");
 995         return CMD_RET_SUCCESS;
 996 }
 997
 998 int fs_read_alloc(const char *fname, ulong size, uint align, void **bufp)
 999 {
1000         loff_t bytes_read;
1001         ulong addr;
1002         char *buf;
1003         int ret;
1004
1005         buf = memalign(align, size + 1);
1006         if (!buf)
1007                 return log_msg_ret("buf", -ENOMEM);
1008         addr = map_to_sysmem(buf);
1009
1010         ret = fs_read(fname, addr, 0, size, &bytes_read);
1011         if (ret) {
1012                 free(buf);
1013                 return log_msg_ret("read", ret);
1014         }
1015         if (size != bytes_read)
1016                 return log_msg_ret("bread", -EIO);
1017         buf[size] = '\0';
1018
1019         *bufp = buf;
1020
1021         return 0;
1022 }
1023
1024 int fs_load_alloc(const char *ifname, const char *dev_part_str,
1025                   const char *fname, ulong max_size, ulong align, void **bufp,
1026                   ulong *sizep)
1027 {
1028         loff_t size;
1029         void *buf;
1030         int ret;
1031
1032         if (fs_set_blk_dev(ifname, dev_part_str, FS_TYPE_ANY))
1033                 return log_msg_ret("set", -ENOMEDIUM);
1034
1035         ret = fs_size(fname, &size);
1036         if (ret)
1037                 return log_msg_ret("sz", -ENOENT);
1038
1039         if (size >= (max_size ?: SZ_1G))
1040                 return log_msg_ret("sz", -E2BIG);
1041
1042         if (fs_set_blk_dev(ifname, dev_part_str, FS_TYPE_ANY))
1043                 return log_msg_ret("set", -ENOMEDIUM);
1044
1045         ret = fs_read_alloc(fname, size, align, &buf);
1046         if (ret)
1047                 return log_msg_ret("al", ret);
1048         *sizep = size;
1049         *bufp = buf;
1050
1051         return 0;
1052 }