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   1 /***************************************************************************
   2  *   Copyright (C) 2007 by Dominic Rath <Dominic.Rath@gmx.de>              *
   3  *   Copyright (C) 2002 Thomas Gleixner <tglx@linutronix.de>               *
   4  *   Copyright (C) 2009 Zachary T Welch <zw@superlucidity.net>             *
   5  *                                                                         *
   6  *   Partially based on drivers/mtd/nand_ids.c from Linux.                 *
   7  *                                                                         *
   8  *   This program is free software; you can redistribute it and/or modify  *
   9  *   it under the terms of the GNU General Public License as published by  *
  10  *   the Free Software Foundation; either version 2 of the License, or     *
  11  *   (at your option) any later version.                                   *
  12  *                                                                         *
  13  *   This program is distributed in the hope that it will be useful,       *
  14  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  15  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  16  *   GNU General Public License for more details.                          *
  17  *                                                                         *
  18  *   You should have received a copy of the GNU General Public License     *
  19  *   along with this program.  If not, see <http://www.gnu.org/licenses/>. *
  20  ***************************************************************************/
  21
  22 #ifdef HAVE_CONFIG_H
  23 #include "config.h"
  24 #endif
  25
  26 #include "core.h"
  27 #include "imp.h"
  28 #include "fileio.h"
  29 #include <target/target.h>
  30
  31 /* to be removed */
  32 extern struct nand_device *nand_devices;
  33
  34 COMMAND_HANDLER(handle_nand_list_command)
  35 {
  36         struct nand_device *p;
  37         int i;
  38
  39         if (!nand_devices) {
  40                 command_print(CMD, "no NAND flash devices configured");
  41                 return ERROR_OK;
  42         }
  43
  44         for (p = nand_devices, i = 0; p; p = p->next, i++) {
  45                 if (p->device)
  46                         command_print(CMD, "#%i: %s (%s) "
  47                                 "pagesize: %i, buswidth: %i,\n\t"
  48                                 "blocksize: %i, blocks: %i",
  49                                 i, p->device->name, p->manufacturer->name,
  50                                 p->page_size, p->bus_width,
  51                                 p->erase_size, p->num_blocks);
  52                 else
  53                         command_print(CMD, "#%i: not probed", i);
  54         }
  55
  56         return ERROR_OK;
  57 }
  58
  59 COMMAND_HANDLER(handle_nand_info_command)
  60 {
  61         int i = 0;
  62         int j = 0;
  63         int first = -1;
  64         int last = -1;
  65
  66         switch (CMD_ARGC) {
  67                 default:
  68                         return ERROR_COMMAND_SYNTAX_ERROR;
  69                 case 1:
  70                         first = 0;
  71                         last = INT32_MAX;
  72                         break;
  73                 case 2:
  74                         COMMAND_PARSE_NUMBER(int, CMD_ARGV[1], i);
  75                         first = last = i;
  76                         i = 0;
  77                         break;
  78                 case 3:
  79                         COMMAND_PARSE_NUMBER(int, CMD_ARGV[1], first);
  80                         COMMAND_PARSE_NUMBER(int, CMD_ARGV[2], last);
  81                         break;
  82         }
  83
  84         struct nand_device *p;
  85         int retval = CALL_COMMAND_HANDLER(nand_command_get_device, 0, &p);
  86         if (retval != ERROR_OK)
  87                 return retval;
  88
  89         if (NULL == p->device) {
  90                 command_print(CMD, "#%s: not probed", CMD_ARGV[0]);
  91                 return ERROR_OK;
  92         }
  93
  94         if (first >= p->num_blocks)
  95                 first = p->num_blocks - 1;
  96
  97         if (last >= p->num_blocks)
  98                 last = p->num_blocks - 1;
  99
 100         command_print(CMD,
 101                 "#%i: %s (%s) pagesize: %i, buswidth: %i, erasesize: %i",
 102                 i++,
 103                 p->device->name,
 104                 p->manufacturer->name,
 105                 p->page_size,
 106                 p->bus_width,
 107                 p->erase_size);
 108
 109         for (j = first; j <= last; j++) {
 110                 char *erase_state, *bad_state;
 111
 112                 if (p->blocks[j].is_erased == 0)
 113                         erase_state = "not erased";
 114                 else if (p->blocks[j].is_erased == 1)
 115                         erase_state = "erased";
 116                 else
 117                         erase_state = "erase state unknown";
 118
 119                 if (p->blocks[j].is_bad == 0)
 120                         bad_state = "";
 121                 else if (p->blocks[j].is_bad == 1)
 122                         bad_state = " (marked bad)";
 123                 else
 124                         bad_state = " (block condition unknown)";
 125
 126                 command_print(CMD,
 127                         "\t#%i: 0x%8.8" PRIx32 " (%" PRIu32 "kB) %s%s",
 128                         j,
 129                         p->blocks[j].offset,
 130                         p->blocks[j].size / 1024,
 131                         erase_state,
 132                         bad_state);
 133         }
 134
 135         return ERROR_OK;
 136 }
 137
 138 COMMAND_HANDLER(handle_nand_probe_command)
 139 {
 140         if (CMD_ARGC != 1)
 141                 return ERROR_COMMAND_SYNTAX_ERROR;
 142
 143         struct nand_device *p;
 144         int retval = CALL_COMMAND_HANDLER(nand_command_get_device, 0, &p);
 145         if (retval != ERROR_OK)
 146                 return retval;
 147
 148         retval = nand_probe(p);
 149         if (retval == ERROR_OK) {
 150                 command_print(CMD, "NAND flash device '%s (%s)' found",
 151                         p->device->name, p->manufacturer->name);
 152         }
 153
 154         return retval;
 155 }
 156
 157 COMMAND_HANDLER(handle_nand_erase_command)
 158 {
 159         if (CMD_ARGC != 1 && CMD_ARGC != 3)
 160                 return ERROR_COMMAND_SYNTAX_ERROR;
 161
 162         struct nand_device *p;
 163         int retval = CALL_COMMAND_HANDLER(nand_command_get_device, 0, &p);
 164         if (retval != ERROR_OK)
 165                 return retval;
 166
 167         unsigned long offset;
 168         unsigned long length;
 169
 170         /* erase specified part of the chip; or else everything */
 171         if (CMD_ARGC == 3) {
 172                 unsigned long size = p->erase_size * p->num_blocks;
 173
 174                 COMMAND_PARSE_NUMBER(ulong, CMD_ARGV[1], offset);
 175                 if ((offset % p->erase_size) != 0 || offset >= size)
 176                         return ERROR_COMMAND_SYNTAX_ERROR;
 177
 178                 COMMAND_PARSE_NUMBER(ulong, CMD_ARGV[2], length);
 179                 if ((length == 0) || (length % p->erase_size) != 0
 180                     || (length + offset) > size)
 181                         return ERROR_COMMAND_SYNTAX_ERROR;
 182
 183                 offset /= p->erase_size;
 184                 length /= p->erase_size;
 185         } else {
 186                 offset = 0;
 187                 length = p->num_blocks;
 188         }
 189
 190         retval = nand_erase(p, offset, offset + length - 1);
 191         if (retval == ERROR_OK) {
 192                 command_print(CMD, "erased blocks %lu to %lu "
 193                         "on NAND flash device #%s '%s'",
 194                         offset, offset + length - 1,
 195                         CMD_ARGV[0], p->device->name);
 196         }
 197
 198         return retval;
 199 }
 200
 201 COMMAND_HANDLER(handle_nand_check_bad_blocks_command)
 202 {
 203         int first = -1;
 204         int last = -1;
 205
 206         if ((CMD_ARGC < 1) || (CMD_ARGC > 3) || (CMD_ARGC == 2))
 207                 return ERROR_COMMAND_SYNTAX_ERROR;
 208
 209         struct nand_device *p;
 210         int retval = CALL_COMMAND_HANDLER(nand_command_get_device, 0, &p);
 211         if (retval != ERROR_OK)
 212                 return retval;
 213
 214         if (CMD_ARGC == 3) {
 215                 unsigned long offset;
 216                 unsigned long length;
 217
 218                 COMMAND_PARSE_NUMBER(ulong, CMD_ARGV[1], offset);
 219                 if (offset % p->erase_size)
 220                         return ERROR_COMMAND_SYNTAX_ERROR;
 221                 offset /= p->erase_size;
 222
 223                 COMMAND_PARSE_NUMBER(ulong, CMD_ARGV[2], length);
 224                 if (length % p->erase_size)
 225                         return ERROR_COMMAND_SYNTAX_ERROR;
 226
 227                 length -= 1;
 228                 length /= p->erase_size;
 229
 230                 first = offset;
 231                 last = offset + length;
 232         }
 233
 234         retval = nand_build_bbt(p, first, last);
 235         if (retval == ERROR_OK) {
 236                 command_print(CMD, "checked NAND flash device for bad blocks, "
 237                         "use \"nand info\" command to list blocks");
 238         }
 239
 240         return retval;
 241 }
 242
 243 COMMAND_HANDLER(handle_nand_write_command)
 244 {
 245         struct nand_device *nand = NULL;
 246         struct nand_fileio_state s;
 247         int retval = CALL_COMMAND_HANDLER(nand_fileio_parse_args,
 248                         &s, &nand, FILEIO_READ, false, true);
 249         if (retval != ERROR_OK)
 250                 return retval;
 251
 252         uint32_t total_bytes = s.size;
 253         while (s.size > 0) {
 254                 int bytes_read = nand_fileio_read(nand, &s);
 255                 if (bytes_read <= 0) {
 256                         command_print(CMD, "error while reading file");
 257                         nand_fileio_cleanup(&s);
 258                         return ERROR_FAIL;
 259                 }
 260                 s.size -= bytes_read;
 261
 262                 retval = nand_write_page(nand, s.address / nand->page_size,
 263                                 s.page, s.page_size, s.oob, s.oob_size);
 264                 if (retval != ERROR_OK) {
 265                         command_print(CMD, "failed writing file %s "
 266                                 "to NAND flash %s at offset 0x%8.8" PRIx32,
 267                                 CMD_ARGV[1], CMD_ARGV[0], s.address);
 268                         nand_fileio_cleanup(&s);
 269                         return retval;
 270                 }
 271                 s.address += s.page_size;
 272         }
 273
 274         if (nand_fileio_finish(&s) == ERROR_OK) {
 275                 command_print(CMD, "wrote file %s to NAND flash %s up to "
 276                         "offset 0x%8.8" PRIx32 " in %fs (%0.3f KiB/s)",
 277                         CMD_ARGV[1], CMD_ARGV[0], s.address, duration_elapsed(&s.bench),
 278                         duration_kbps(&s.bench, total_bytes));
 279         }
 280         return ERROR_OK;
 281 }
 282
 283 COMMAND_HANDLER(handle_nand_verify_command)
 284 {
 285         struct nand_device *nand = NULL;
 286         struct nand_fileio_state file;
 287         int retval = CALL_COMMAND_HANDLER(nand_fileio_parse_args,
 288                         &file, &nand, FILEIO_READ, false, true);
 289         if (retval != ERROR_OK)
 290                 return retval;
 291
 292         struct nand_fileio_state dev;
 293         nand_fileio_init(&dev);
 294         dev.address = file.address;
 295         dev.size = file.size;
 296         dev.oob_format = file.oob_format;
 297         retval = nand_fileio_start(CMD, nand, NULL, FILEIO_NONE, &dev);
 298         if (retval != ERROR_OK)
 299                 return retval;
 300
 301         while (file.size > 0) {
 302                 retval = nand_read_page(nand, dev.address / dev.page_size,
 303                                 dev.page, dev.page_size, dev.oob, dev.oob_size);
 304                 if (retval != ERROR_OK) {
 305                         command_print(CMD, "reading NAND flash page failed");
 306                         nand_fileio_cleanup(&dev);
 307                         nand_fileio_cleanup(&file);
 308                         return retval;
 309                 }
 310
 311                 int bytes_read = nand_fileio_read(nand, &file);
 312                 if (bytes_read <= 0) {
 313                         command_print(CMD, "error while reading file");
 314                         nand_fileio_cleanup(&dev);
 315                         nand_fileio_cleanup(&file);
 316                         return ERROR_FAIL;
 317                 }
 318
 319                 if ((dev.page && memcmp(dev.page, file.page, dev.page_size)) ||
 320                                 (dev.oob && memcmp(dev.oob, file.oob, dev.oob_size))) {
 321                         command_print(CMD, "NAND flash contents differ "
 322                                 "at 0x%8.8" PRIx32, dev.address);
 323                         nand_fileio_cleanup(&dev);
 324                         nand_fileio_cleanup(&file);
 325                         return ERROR_FAIL;
 326                 }
 327
 328                 file.size -= bytes_read;
 329                 dev.address += nand->page_size;
 330         }
 331
 332         if (nand_fileio_finish(&file) == ERROR_OK) {
 333                 command_print(CMD, "verified file %s in NAND flash %s "
 334                         "up to offset 0x%8.8" PRIx32 " in %fs (%0.3f KiB/s)",
 335                         CMD_ARGV[1], CMD_ARGV[0], dev.address, duration_elapsed(&file.bench),
 336                         duration_kbps(&file.bench, dev.size));
 337         }
 338
 339         return nand_fileio_cleanup(&dev);
 340 }
 341
 342 COMMAND_HANDLER(handle_nand_dump_command)
 343 {
 344         size_t filesize;
 345         struct nand_device *nand = NULL;
 346         struct nand_fileio_state s;
 347         int retval = CALL_COMMAND_HANDLER(nand_fileio_parse_args,
 348                         &s, &nand, FILEIO_WRITE, true, false);
 349         if (retval != ERROR_OK)
 350                 return retval;
 351
 352         while (s.size > 0) {
 353                 size_t size_written;
 354                 retval = nand_read_page(nand, s.address / nand->page_size,
 355                                 s.page, s.page_size, s.oob, s.oob_size);
 356                 if (retval != ERROR_OK) {
 357                         command_print(CMD, "reading NAND flash page failed");
 358                         nand_fileio_cleanup(&s);
 359                         return retval;
 360                 }
 361
 362                 if (NULL != s.page)
 363                         fileio_write(s.fileio, s.page_size, s.page, &size_written);
 364
 365                 if (NULL != s.oob)
 366                         fileio_write(s.fileio, s.oob_size, s.oob, &size_written);
 367
 368                 s.size -= nand->page_size;
 369                 s.address += nand->page_size;
 370         }
 371
 372         retval = fileio_size(s.fileio, &filesize);
 373         if (retval != ERROR_OK)
 374                 return retval;
 375
 376         if (nand_fileio_finish(&s) == ERROR_OK) {
 377                 command_print(CMD, "dumped %zu bytes in %fs (%0.3f KiB/s)",
 378                         filesize, duration_elapsed(&s.bench),
 379                         duration_kbps(&s.bench, filesize));
 380         }
 381         return ERROR_OK;
 382 }
 383
 384 COMMAND_HANDLER(handle_nand_raw_access_command)
 385 {
 386         if ((CMD_ARGC < 1) || (CMD_ARGC > 2))
 387                 return ERROR_COMMAND_SYNTAX_ERROR;
 388
 389         struct nand_device *p;
 390         int retval = CALL_COMMAND_HANDLER(nand_command_get_device, 0, &p);
 391         if (retval != ERROR_OK)
 392                 return retval;
 393
 394         if (NULL == p->device) {
 395                 command_print(CMD, "#%s: not probed", CMD_ARGV[0]);
 396                 return ERROR_OK;
 397         }
 398
 399         if (CMD_ARGC == 2)
 400                 COMMAND_PARSE_ENABLE(CMD_ARGV[1], p->use_raw);
 401
 402         const char *msg = p->use_raw ? "enabled" : "disabled";
 403         command_print(CMD, "raw access is %s", msg);
 404
 405         return ERROR_OK;
 406 }
 407
 408 static const struct command_registration nand_exec_command_handlers[] = {
 409         {
 410                 .name = "list",
 411                 .handler = handle_nand_list_command,
 412                 .mode = COMMAND_EXEC,
 413                 .help = "list configured NAND flash devices",
 414                 .usage = "",
 415         },
 416         {
 417                 .name = "info",
 418                 .handler = handle_nand_info_command,
 419                 .mode = COMMAND_EXEC,
 420                 .usage = "[banknum | first_bank_num last_bank_num]",
 421                 .help = "print info about one or more NAND flash devices",
 422         },
 423         {
 424                 .name = "probe",
 425                 .handler = handle_nand_probe_command,
 426                 .mode = COMMAND_EXEC,
 427                 .usage = "bank_id",
 428                 .help = "identify NAND flash device",
 429         },
 430         {
 431                 .name = "check_bad_blocks",
 432                 .handler = handle_nand_check_bad_blocks_command,
 433                 .mode = COMMAND_EXEC,
 434                 .usage = "bank_id [offset length]",
 435                 .help = "check all or part of NAND flash device for bad blocks",
 436         },
 437         {
 438                 .name = "erase",
 439                 .handler = handle_nand_erase_command,
 440                 .mode = COMMAND_EXEC,
 441                 .usage = "bank_id [offset length]",
 442                 .help = "erase all or subset of blocks on NAND flash device",
 443         },
 444         {
 445                 .name = "dump",
 446                 .handler = handle_nand_dump_command,
 447                 .mode = COMMAND_EXEC,
 448                 .usage = "bank_id filename offset length "
 449                         "['oob_raw'|'oob_only']",
 450                 .help = "dump from NAND flash device",
 451         },
 452         {
 453                 .name = "verify",
 454                 .handler = handle_nand_verify_command,
 455                 .mode = COMMAND_EXEC,
 456                 .usage = "bank_id filename offset "
 457                         "['oob_raw'|'oob_only'|'oob_softecc'|'oob_softecc_kw']",
 458                 .help = "verify NAND flash device",
 459         },
 460         {
 461                 .name = "write",
 462                 .handler = handle_nand_write_command,
 463                 .mode = COMMAND_EXEC,
 464                 .usage = "bank_id filename offset "
 465                         "['oob_raw'|'oob_only'|'oob_softecc'|'oob_softecc_kw']",
 466                 .help = "write to NAND flash device",
 467         },
 468         {
 469                 .name = "raw_access",
 470                 .handler = handle_nand_raw_access_command,
 471                 .mode = COMMAND_EXEC,
 472                 .usage = "bank_id ['enable'|'disable']",
 473                 .help = "raw access to NAND flash device",
 474         },
 475         COMMAND_REGISTRATION_DONE
 476 };
 477
 478 static int nand_init(struct command_context *cmd_ctx)
 479 {
 480         if (!nand_devices)
 481                 return ERROR_OK;
 482
 483         return register_commands(cmd_ctx, "nand", nand_exec_command_handlers);
 484 }
 485
 486 COMMAND_HANDLER(handle_nand_init_command)
 487 {
 488         if (CMD_ARGC != 0)
 489                 return ERROR_COMMAND_SYNTAX_ERROR;
 490
 491         static bool nand_initialized;
 492         if (nand_initialized) {
 493                 LOG_INFO("'nand init' has already been called");
 494                 return ERROR_OK;
 495         }
 496         nand_initialized = true;
 497
 498         LOG_DEBUG("Initializing NAND devices...");
 499         return nand_init(CMD_CTX);
 500 }
 501
 502 static int nand_list_walker(struct nand_flash_controller *c, void *x)
 503 {
 504         struct command_invocation *cmd = x;
 505         command_print(cmd, "  %s", c->name);
 506         return ERROR_OK;
 507 }
 508
 509 COMMAND_HANDLER(handle_nand_list_drivers)
 510 {
 511         command_print(CMD, "Available NAND flash controller drivers:");
 512         return nand_driver_walk(&nand_list_walker, CMD);
 513 }
 514
 515 static COMMAND_HELPER(create_nand_device, const char *bank_name,
 516         struct nand_flash_controller *controller)
 517 {
 518         struct nand_device *c;
 519         struct target *target;
 520         int retval;
 521
 522         if (CMD_ARGC < 2)
 523                 return ERROR_COMMAND_SYNTAX_ERROR;
 524         target = get_target(CMD_ARGV[1]);
 525         if (!target) {
 526                 LOG_ERROR("invalid target %s", CMD_ARGV[1]);
 527                 return ERROR_COMMAND_ARGUMENT_INVALID;
 528         }
 529
 530         if (NULL != controller->commands) {
 531                 retval = register_commands(CMD_CTX, NULL,
 532                                 controller->commands);
 533                 if (retval != ERROR_OK)
 534                         return retval;
 535         }
 536         c = malloc(sizeof(struct nand_device));
 537         if (c == NULL) {
 538                 LOG_ERROR("End of memory");
 539                 return ERROR_FAIL;
 540         }
 541
 542         c->name = strdup(bank_name);
 543         c->target = target;
 544         c->controller = controller;
 545         c->controller_priv = NULL;
 546         c->manufacturer = NULL;
 547         c->device = NULL;
 548         c->bus_width = 0;
 549         c->address_cycles = 0;
 550         c->page_size = 0;
 551         c->use_raw = false;
 552         c->next = NULL;
 553
 554         retval = CALL_COMMAND_HANDLER(controller->nand_device_command, c);
 555         if (retval != ERROR_OK) {
 556                 LOG_ERROR("'%s' driver rejected nand flash. Usage: %s",
 557                         controller->name,
 558                         controller->usage);
 559                 free(c);
 560                 return retval;
 561         }
 562
 563         if (controller->usage == NULL)
 564                 LOG_DEBUG("'%s' driver usage field missing", controller->name);
 565
 566         nand_device_add(c);
 567
 568         return ERROR_OK;
 569 }
 570
 571 COMMAND_HANDLER(handle_nand_device_command)
 572 {
 573         if (CMD_ARGC < 2)
 574                 return ERROR_COMMAND_SYNTAX_ERROR;
 575
 576         /* save name and increment (for compatibility) with drivers */
 577         const char *bank_name = *CMD_ARGV++;
 578         CMD_ARGC--;
 579
 580         const char *driver_name = CMD_ARGV[0];
 581         struct nand_flash_controller *controller;
 582         controller = nand_driver_find_by_name(CMD_ARGV[0]);
 583         if (NULL == controller) {
 584                 LOG_ERROR("No valid NAND flash driver found (%s)", driver_name);
 585                 return CALL_COMMAND_HANDLER(handle_nand_list_drivers);
 586         }
 587         return CALL_COMMAND_HANDLER(create_nand_device, bank_name, controller);
 588 }
 589
 590 static const struct command_registration nand_config_command_handlers[] = {
 591         {
 592                 .name = "device",
 593                 .handler = &handle_nand_device_command,
 594                 .mode = COMMAND_CONFIG,
 595                 .help = "defines a new NAND bank",
 596                 .usage = "bank_id driver target [driver_options ...]",
 597         },
 598         {
 599                 .name = "drivers",
 600                 .handler = &handle_nand_list_drivers,
 601                 .mode = COMMAND_ANY,
 602                 .help = "lists available NAND drivers",
 603                 .usage = ""
 604         },
 605         {
 606                 .name = "init",
 607                 .mode = COMMAND_CONFIG,
 608                 .handler = &handle_nand_init_command,
 609                 .help = "initialize NAND devices",
 610                 .usage = ""
 611         },
 612         COMMAND_REGISTRATION_DONE
 613 };
 614
 615 static const struct command_registration nand_command_handlers[] = {
 616         {
 617                 .name = "nand",
 618                 .mode = COMMAND_ANY,
 619                 .help = "NAND flash command group",
 620                 .usage = "",
 621                 .chain = nand_config_command_handlers,
 622         },
 623         COMMAND_REGISTRATION_DONE
 624 };
 625
 626 int nand_register_commands(struct command_context *cmd_ctx)
 627 {
 628         return register_commands(cmd_ctx, NULL, nand_command_handlers);
 629 }