common/cmd_ubi.c

   1 /*
   2  * Unsorted Block Image commands
   3  *
   4  *  Copyright (C) 2008 Samsung Electronics
   5  *  Kyungmin Park <kyungmin.park@samsung.com>
   6  *
   7  * Copyright 2008-2009 Stefan Roese <sr@denx.de>, DENX Software Engineering
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License version 2 as
  11  * published by the Free Software Foundation.
  12  */
  13
  14 #include <common.h>
  15 #include <command.h>
  16 #include <exports.h>
  17
  18 #include <nand.h>
  19 #include <onenand_uboot.h>
  20 #include <linux/mtd/mtd.h>
  21 #include <linux/mtd/partitions.h>
  22 #include <ubi_uboot.h>
  23 #include <asm/errno.h>
  24 #include <jffs2/load_kernel.h>
  25
  26 #define DEV_TYPE_NONE           0
  27 #define DEV_TYPE_NAND           1
  28 #define DEV_TYPE_ONENAND        2
  29 #define DEV_TYPE_NOR            3
  30
  31 /* Private own data */
  32 static struct ubi_device *ubi;
  33 static char buffer[80];
  34 static int ubi_initialized;
  35
  36 struct selected_dev {
  37         char part_name[80];
  38         int selected;
  39         int nr;
  40         struct mtd_info *mtd_info;
  41 };
  42
  43 static struct selected_dev ubi_dev;
  44
  45 static void ubi_dump_vol_info(const struct ubi_volume *vol)
  46 {
  47         ubi_msg("volume information dump:");
  48         ubi_msg("vol_id          %d", vol->vol_id);
  49         ubi_msg("reserved_pebs   %d", vol->reserved_pebs);
  50         ubi_msg("alignment       %d", vol->alignment);
  51         ubi_msg("data_pad        %d", vol->data_pad);
  52         ubi_msg("vol_type        %d", vol->vol_type);
  53         ubi_msg("name_len        %d", vol->name_len);
  54         ubi_msg("usable_leb_size %d", vol->usable_leb_size);
  55         ubi_msg("used_ebs        %d", vol->used_ebs);
  56         ubi_msg("used_bytes      %lld", vol->used_bytes);
  57         ubi_msg("last_eb_bytes   %d", vol->last_eb_bytes);
  58         ubi_msg("corrupted       %d", vol->corrupted);
  59         ubi_msg("upd_marker      %d", vol->upd_marker);
  60
  61         if (vol->name_len <= UBI_VOL_NAME_MAX &&
  62                 strnlen(vol->name, vol->name_len + 1) == vol->name_len) {
  63                 ubi_msg("name            %s", vol->name);
  64         } else {
  65                 ubi_msg("the 1st 5 characters of the name: %c%c%c%c%c",
  66                                 vol->name[0], vol->name[1], vol->name[2],
  67                                 vol->name[3], vol->name[4]);
  68         }
  69         printf("\n");
  70 }
  71
  72 static void display_volume_info(struct ubi_device *ubi)
  73 {
  74         int i;
  75
  76         for (i = 0; i < (ubi->vtbl_slots + 1); i++) {
  77                 if (!ubi->volumes[i])
  78                         continue;       /* Empty record */
  79                 ubi_dump_vol_info(ubi->volumes[i]);
  80         }
  81 }
  82
  83 static void display_ubi_info(struct ubi_device *ubi)
  84 {
  85         ubi_msg("MTD device name:            \"%s\"", ubi->mtd->name);
  86         ubi_msg("MTD device size:            %llu MiB", ubi->flash_size >> 20);
  87         ubi_msg("physical eraseblock size:   %d bytes (%d KiB)",
  88                         ubi->peb_size, ubi->peb_size >> 10);
  89         ubi_msg("logical eraseblock size:    %d bytes", ubi->leb_size);
  90         ubi_msg("number of good PEBs:        %d", ubi->good_peb_count);
  91         ubi_msg("number of bad PEBs:         %d", ubi->bad_peb_count);
  92         ubi_msg("smallest flash I/O unit:    %d", ubi->min_io_size);
  93         ubi_msg("VID header offset:          %d (aligned %d)",
  94                         ubi->vid_hdr_offset, ubi->vid_hdr_aloffset);
  95         ubi_msg("data offset:                %d", ubi->leb_start);
  96         ubi_msg("max. allowed volumes:       %d", ubi->vtbl_slots);
  97         ubi_msg("wear-leveling threshold:    %d", CONFIG_MTD_UBI_WL_THRESHOLD);
  98         ubi_msg("number of internal volumes: %d", UBI_INT_VOL_COUNT);
  99         ubi_msg("number of user volumes:     %d",
 100                         ubi->vol_count - UBI_INT_VOL_COUNT);
 101         ubi_msg("available PEBs:             %d", ubi->avail_pebs);
 102         ubi_msg("total number of reserved PEBs: %d", ubi->rsvd_pebs);
 103         ubi_msg("number of PEBs reserved for bad PEB handling: %d",
 104                         ubi->beb_rsvd_pebs);
 105         ubi_msg("max/mean erase counter: %d/%d", ubi->max_ec, ubi->mean_ec);
 106 }
 107
 108 static int ubi_info(int layout)
 109 {
 110         if (layout)
 111                 display_volume_info(ubi);
 112         else
 113                 display_ubi_info(ubi);
 114
 115         return 0;
 116 }
 117
 118 static int verify_mkvol_req(const struct ubi_device *ubi,
 119                             const struct ubi_mkvol_req *req)
 120 {
 121         int n, err = -EINVAL;
 122
 123         if (req->bytes < 0 || req->alignment < 0 || req->vol_type < 0 ||
 124             req->name_len < 0)
 125                 goto bad;
 126
 127         if ((req->vol_id < 0 || req->vol_id >= ubi->vtbl_slots) &&
 128             req->vol_id != UBI_VOL_NUM_AUTO)
 129                 goto bad;
 130
 131         if (req->alignment == 0)
 132                 goto bad;
 133
 134         if (req->bytes == 0)
 135                 goto bad;
 136
 137         if (req->vol_type != UBI_DYNAMIC_VOLUME &&
 138             req->vol_type != UBI_STATIC_VOLUME)
 139                 goto bad;
 140
 141         if (req->alignment > ubi->leb_size)
 142                 goto bad;
 143
 144         n = req->alignment % ubi->min_io_size;
 145         if (req->alignment != 1 && n)
 146                 goto bad;
 147
 148         if (req->name_len > UBI_VOL_NAME_MAX) {
 149                 err = -ENAMETOOLONG;
 150                 goto bad;
 151         }
 152
 153         return 0;
 154 bad:
 155         printf("bad volume creation request");
 156         return err;
 157 }
 158
 159 static int ubi_create_vol(char *volume, int size, int dynamic)
 160 {
 161         struct ubi_mkvol_req req;
 162         int err;
 163
 164         if (dynamic)
 165                 req.vol_type = UBI_DYNAMIC_VOLUME;
 166         else
 167                 req.vol_type = UBI_STATIC_VOLUME;
 168
 169         req.vol_id = UBI_VOL_NUM_AUTO;
 170         req.alignment = 1;
 171         req.bytes = size;
 172
 173         strcpy(req.name, volume);
 174         req.name_len = strlen(volume);
 175         req.name[req.name_len] = '\0';
 176         req.padding1 = 0;
 177         /* It's duplicated at drivers/mtd/ubi/cdev.c */
 178         err = verify_mkvol_req(ubi, &req);
 179         if (err) {
 180                 printf("verify_mkvol_req failed %d\n", err);
 181                 return err;
 182         }
 183         printf("Creating %s volume %s of size %d\n",
 184                 dynamic ? "dynamic" : "static", volume, size);
 185         /* Call real ubi create volume */
 186         return ubi_create_volume(ubi, &req);
 187 }
 188
 189 static int ubi_remove_vol(char *volume)
 190 {
 191         int i, err, reserved_pebs;
 192         int found = 0, vol_id = 0;
 193         struct ubi_volume *vol;
 194
 195         for (i = 0; i < ubi->vtbl_slots; i++) {
 196                 vol = ubi->volumes[i];
 197                 if (vol && !strcmp(vol->name, volume)) {
 198                         printf("Volume %s found at valid %d\n", volume, i);
 199                         vol_id = i;
 200                         found = 1;
 201                         break;
 202                 }
 203         }
 204         if (!found) {
 205                 printf("%s volume not found\n", volume);
 206                 return -ENODEV;
 207         }
 208         printf("remove UBI volume %s (id %d)\n", vol->name, vol->vol_id);
 209
 210         if (ubi->ro_mode) {
 211                 printf("It's read-only mode\n");
 212                 err = -EROFS;
 213                 goto out_err;
 214         }
 215
 216         err = ubi_change_vtbl_record(ubi, vol_id, NULL);
 217         if (err) {
 218                 printf("Error changing Vol tabel record err=%x\n", err);
 219                 goto out_err;
 220         }
 221         reserved_pebs = vol->reserved_pebs;
 222         for (i = 0; i < vol->reserved_pebs; i++) {
 223                 err = ubi_eba_unmap_leb(ubi, vol, i);
 224                 if (err)
 225                         goto out_err;
 226         }
 227
 228         kfree(vol->eba_tbl);
 229         ubi->volumes[vol_id]->eba_tbl = NULL;
 230         ubi->volumes[vol_id] = NULL;
 231
 232         ubi->rsvd_pebs -= reserved_pebs;
 233         ubi->avail_pebs += reserved_pebs;
 234         i = ubi->beb_rsvd_level - ubi->beb_rsvd_pebs;
 235         if (i > 0) {
 236                 i = ubi->avail_pebs >= i ? i : ubi->avail_pebs;
 237                 ubi->avail_pebs -= i;
 238                 ubi->rsvd_pebs += i;
 239                 ubi->beb_rsvd_pebs += i;
 240                 if (i > 0)
 241                         ubi_msg("reserve more %d PEBs", i);
 242         }
 243         ubi->vol_count -= 1;
 244
 245         return 0;
 246 out_err:
 247         ubi_err("cannot remove volume %d, error %d", vol_id, err);
 248         return err;
 249 }
 250
 251 static int ubi_volume_write(char *volume, void *buf, size_t size)
 252 {
 253         int i = 0, err = -1;
 254         int rsvd_bytes = 0;
 255         int found = 0;
 256         struct ubi_volume *vol;
 257
 258         for (i = 0; i < ubi->vtbl_slots; i++) {
 259                 vol = ubi->volumes[i];
 260                 if (vol && !strcmp(vol->name, volume)) {
 261                         printf("Volume \"%s\" found at volume id %d\n", volume, i);
 262                         found = 1;
 263                         break;
 264                 }
 265         }
 266         if (!found) {
 267                 printf("%s volume not found\n", volume);
 268                 return 1;
 269         }
 270         rsvd_bytes = vol->reserved_pebs * (ubi->leb_size - vol->data_pad);
 271         if (size < 0 || size > rsvd_bytes) {
 272                 printf("rsvd_bytes=%d vol->reserved_pebs=%d ubi->leb_size=%d\n",
 273                      rsvd_bytes, vol->reserved_pebs, ubi->leb_size);
 274                 printf("vol->data_pad=%d\n", vol->data_pad);
 275                 printf("Size > volume size !!\n");
 276                 return 1;
 277         }
 278
 279         err = ubi_start_update(ubi, vol, size);
 280         if (err < 0) {
 281                 printf("Cannot start volume update\n");
 282                 return err;
 283         }
 284
 285         err = ubi_more_update_data(ubi, vol, buf, size);
 286         if (err < 0) {
 287                 printf("Couldnt or partially wrote data \n");
 288                 return err;
 289         }
 290
 291         if (err) {
 292                 size = err;
 293
 294                 err = ubi_check_volume(ubi, vol->vol_id);
 295                 if ( err < 0 )
 296                         return err;
 297
 298                 if (err) {
 299                         ubi_warn("volume %d on UBI device %d is corrupted",
 300                                         vol->vol_id, ubi->ubi_num);
 301                         vol->corrupted = 1;
 302                 }
 303
 304                 vol->checked = 1;
 305                 ubi_gluebi_updated(vol);
 306         }
 307
 308         return 0;
 309 }
 310
 311 static int ubi_volume_read(char *volume, char *buf, size_t size)
 312 {
 313         int err, lnum, off, len, tbuf_size, i = 0;
 314         size_t count_save = size;
 315         void *tbuf;
 316         unsigned long long tmp;
 317         struct ubi_volume *vol = NULL;
 318         loff_t offp = 0;
 319
 320         for (i = 0; i < ubi->vtbl_slots; i++) {
 321                 vol = ubi->volumes[i];
 322                 if (vol && !strcmp(vol->name, volume)) {
 323                         printf("Volume %s found at volume id %d\n",
 324                                 volume, vol->vol_id);
 325                         break;
 326                 }
 327         }
 328         if (i == ubi->vtbl_slots) {
 329                 printf("%s volume not found\n", volume);
 330                 return -ENODEV;
 331         }
 332
 333         printf("read %i bytes from volume %d to %x(buf address)\n",
 334                (int) size, vol->vol_id, (unsigned)buf);
 335
 336         if (vol->updating) {
 337                 printf("updating");
 338                 return -EBUSY;
 339         }
 340         if (vol->upd_marker) {
 341                 printf("damaged volume, update marker is set");
 342                 return -EBADF;
 343         }
 344         if (offp == vol->used_bytes)
 345                 return 0;
 346
 347         if (size == 0) {
 348                 printf("Read [%lu] bytes\n", (unsigned long) vol->used_bytes);
 349                 size = vol->used_bytes;
 350         }
 351
 352         if (vol->corrupted)
 353                 printf("read from corrupted volume %d", vol->vol_id);
 354         if (offp + size > vol->used_bytes)
 355                 count_save = size = vol->used_bytes - offp;
 356
 357         tbuf_size = vol->usable_leb_size;
 358         if (size < tbuf_size)
 359                 tbuf_size = ALIGN(size, ubi->min_io_size);
 360         tbuf = malloc(tbuf_size);
 361         if (!tbuf) {
 362                 printf("NO MEM\n");
 363                 return -ENOMEM;
 364         }
 365         len = size > tbuf_size ? tbuf_size : size;
 366
 367         tmp = offp;
 368         off = do_div(tmp, vol->usable_leb_size);
 369         lnum = tmp;
 370         do {
 371                 if (off + len >= vol->usable_leb_size)
 372                         len = vol->usable_leb_size - off;
 373
 374                 err = ubi_eba_read_leb(ubi, vol, lnum, tbuf, off, len, 0);
 375                 if (err) {
 376                         printf("read err %x\n", err);
 377                         break;
 378                 }
 379                 off += len;
 380                 if (off == vol->usable_leb_size) {
 381                         lnum += 1;
 382                         off -= vol->usable_leb_size;
 383                 }
 384
 385                 size -= len;
 386                 offp += len;
 387
 388                 memcpy(buf, tbuf, len);
 389
 390                 buf += len;
 391                 len = size > tbuf_size ? tbuf_size : size;
 392         } while (size);
 393
 394         free(tbuf);
 395         return err ? err : count_save - size;
 396 }
 397
 398 static int ubi_dev_scan(struct mtd_info *info, char *ubidev)
 399 {
 400         struct mtd_device *dev;
 401         struct part_info *part;
 402         struct mtd_partition mtd_part;
 403         u8 pnum;
 404         int err;
 405
 406         if (find_dev_and_part(ubidev, &dev, &pnum, &part) != 0)
 407                 return 1;
 408
 409         sprintf(buffer, "mtd=%d", pnum);
 410         memset(&mtd_part, 0, sizeof(mtd_part));
 411         mtd_part.name = buffer;
 412         mtd_part.size = part->size;
 413         mtd_part.offset = part->offset;
 414         add_mtd_partitions(info, &mtd_part, 1);
 415
 416         err = ubi_mtd_param_parse(buffer, NULL);
 417         if (err) {
 418                 del_mtd_partitions(info);
 419                 return err;
 420         }
 421
 422         err = ubi_init();
 423         if (err) {
 424                 del_mtd_partitions(info);
 425                 return err;
 426         }
 427
 428         ubi_initialized = 1;
 429
 430         return 0;
 431 }
 432
 433 static int do_ubi(cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
 434 {
 435         size_t size = 0;
 436         ulong addr = 0;
 437         int err = 0;
 438
 439         if (argc < 2) {
 440                 cmd_usage(cmdtp);
 441                 return 1;
 442         }
 443
 444         if (mtdparts_init() != 0) {
 445                 printf("Error initializing mtdparts!\n");
 446                 return 1;
 447         }
 448
 449         if (strcmp(argv[1], "part") == 0) {
 450                 char mtd_dev[16];
 451                 struct mtd_device *dev;
 452                 struct part_info *part;
 453                 u8 pnum;
 454
 455                 /* Print current partition */
 456                 if (argc == 2) {
 457                         if (!ubi_dev.selected) {
 458                                 printf("Error, no UBI device/partition selected!\n");
 459                                 return 1;
 460                         }
 461
 462                         printf("Device %d: %s, partition %s\n",
 463                                ubi_dev.nr, ubi_dev.mtd_info->name, ubi_dev.part_name);
 464                         return 0;
 465                 }
 466
 467                 if (argc < 3) {
 468                         cmd_usage(cmdtp);
 469                         return 1;
 470                 }
 471
 472                 /* todo: get dev number for NAND... */
 473                 ubi_dev.nr = 0;
 474
 475                 /*
 476                  * Call ubi_exit() before re-initializing the UBI subsystem
 477                  */
 478                 if (ubi_initialized) {
 479                         ubi_exit();
 480                         del_mtd_partitions(ubi_dev.mtd_info);
 481                 }
 482
 483                 /*
 484                  * Search the mtd device number where this partition
 485                  * is located
 486                  */
 487                 if (find_dev_and_part(argv[2], &dev, &pnum, &part)) {
 488                         printf("Partition %s not found!\n", argv[2]);
 489                         return 1;
 490                 }
 491                 sprintf(mtd_dev, "%s%d", MTD_DEV_TYPE(dev->id->type), dev->id->num);
 492                 ubi_dev.mtd_info = get_mtd_device_nm(mtd_dev);
 493                 if (IS_ERR(ubi_dev.mtd_info)) {
 494                         printf("Partition %s not found on device %s!\n", argv[2], mtd_dev);
 495                         return 1;
 496                 }
 497
 498                 ubi_dev.selected = 1;
 499
 500                 strcpy(ubi_dev.part_name, argv[2]);
 501                 err = ubi_dev_scan(ubi_dev.mtd_info, ubi_dev.part_name);
 502                 if (err) {
 503                         printf("UBI init error %d\n", err);
 504                         ubi_dev.selected = 0;
 505                         return err;
 506                 }
 507
 508                 ubi = ubi_devices[0];
 509
 510                 return 0;
 511         }
 512
 513         if ((strcmp(argv[1], "part") != 0) && (!ubi_dev.selected)) {
 514                 printf("Error, no UBI device/partition selected!\n");
 515                 return 1;
 516         }
 517
 518         if (strcmp(argv[1], "info") == 0) {
 519                 int layout = 0;
 520                 if (argc > 2 && !strncmp(argv[2], "l", 1))
 521                         layout = 1;
 522                 return ubi_info(layout);
 523         }
 524
 525         if (strncmp(argv[1], "create", 6) == 0) {
 526                 int dynamic = 1;        /* default: dynamic volume */
 527
 528                 /* Use maximum available size */
 529                 size = 0;
 530
 531                 /* E.g., create volume size type */
 532                 if (argc == 5) {
 533                         if (strncmp(argv[4], "s", 1) == 0)
 534                                 dynamic = 0;
 535                         else if (strncmp(argv[4], "d", 1) != 0) {
 536                                 printf("Incorrect type\n");
 537                                 return 1;
 538                         }
 539                         argc--;
 540                 }
 541                 /* E.g., create volume size */
 542                 if (argc == 4) {
 543                         size = simple_strtoul(argv[3], NULL, 16);
 544                         argc--;
 545                 }
 546                 /* Use maximum available size */
 547                 if (!size)
 548                         size = ubi->avail_pebs * ubi->leb_size;
 549                 /* E.g., create volume */
 550                 if (argc == 3)
 551                         return ubi_create_vol(argv[2], size, dynamic);
 552         }
 553
 554         if (strncmp(argv[1], "remove", 6) == 0) {
 555                 /* E.g., remove volume */
 556                 if (argc == 3)
 557                         return ubi_remove_vol(argv[2]);
 558         }
 559
 560         if (strncmp(argv[1], "write", 5) == 0) {
 561                 if (argc < 5) {
 562                         printf("Please see usage\n");
 563                         return 1;
 564                 }
 565
 566                 addr = simple_strtoul(argv[2], NULL, 16);
 567                 size = simple_strtoul(argv[4], NULL, 16);
 568
 569                 return ubi_volume_write(argv[3], (void *)addr, size);
 570         }
 571
 572         if (strncmp(argv[1], "read", 4) == 0) {
 573                 size = 0;
 574
 575                 /* E.g., read volume size */
 576                 if (argc == 5) {
 577                         size = simple_strtoul(argv[4], NULL, 16);
 578                         argc--;
 579                 }
 580
 581                 /* E.g., read volume */
 582                 if (argc == 4) {
 583                         addr = simple_strtoul(argv[2], NULL, 16);
 584                         argc--;
 585                 }
 586
 587                 if (argc == 3)
 588                         return ubi_volume_read(argv[3], (char *)addr, size);
 589         }
 590
 591         printf("Please see usage\n");
 592         return -1;
 593 }
 594
 595 U_BOOT_CMD(ubi, 6, 1, do_ubi,
 596         "ubi commands",
 597         "part [part]"
 598                 " - Show or set current partition\n"
 599         "ubi info [l[ayout]]"
 600                 " - Display volume and ubi layout information\n"
 601         "ubi create[vol] volume [size] [type]"
 602                 " - create volume name with size\n"
 603         "ubi write[vol] address volume size"
 604                 " - Write volume from address with size\n"
 605         "ubi read[vol] address volume [size]"
 606                 " - Read volume to address with size\n"
 607         "ubi remove[vol] volume"
 608                 " - Remove volume\n"
 609         "[Legends]\n"
 610         " volume: charater name\n"
 611         " size: KiB, MiB, GiB, and bytes\n"
 612         " type: s[tatic] or d[ynamic] (default=dynamic)\n"
 613 );