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   1 /***************************************************************************
   2  *   Copyright (C) 2005 by Dominic Rath <Dominic.Rath@gmx.de>              *
   3  *   Copyright (C) 2007,2008 Øyvind Harboe <oyvind.harboe@zylin.com>       *
   4  *   Copyright (C) 2008 by Spencer Oliver <spen@spen-soft.co.uk>           *
   5  *   Copyright (C) 2009 Zachary T Welch <zw@superlucidity.net>             *
   6  *                                                                         *
   7  *   This program is free software; you can redistribute it and/or modify  *
   8  *   it under the terms of the GNU General Public License as published by  *
   9  *   the Free Software Foundation; either version 2 of the License, or     *
  10  *   (at your option) any later version.                                   *
  11  *                                                                         *
  12  *   This program is distributed in the hope that it will be useful,       *
  13  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  14  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  15  *   GNU General Public License for more details.                          *
  16  *                                                                         *
  17  *   You should have received a copy of the GNU General Public License     *
  18  *   along with this program; if not, write to the                         *
  19  *   Free Software Foundation, Inc.,                                       *
  20  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
  21  ***************************************************************************/
  22 #ifdef HAVE_CONFIG_H
  23 #include "config.h"
  24 #endif
  25 #include "imp.h"
  26 #include <helper/time_support.h>
  27 #include <target/image.h>
  28
  29 /**
  30  * @file
  31  * Implements Tcl commands used to access NOR flash facilities.
  32  */
  33
  34 COMMAND_HELPER(flash_command_get_bank, unsigned name_index,
  35                 struct flash_bank **bank)
  36 {
  37         const char *name = CMD_ARGV[name_index];
  38         *bank = get_flash_bank_by_name(name);
  39         if (*bank)
  40                 return ERROR_OK;
  41
  42         unsigned bank_num;
  43         COMMAND_PARSE_NUMBER(uint, name, bank_num);
  44
  45         return get_flash_bank_by_num(bank_num, bank);
  46 }
  47
  48
  49 COMMAND_HANDLER(handle_flash_info_command)
  50 {
  51         struct flash_bank *p;
  52         int j = 0;
  53         int retval;
  54
  55         if (CMD_ARGC != 1)
  56                 return ERROR_COMMAND_SYNTAX_ERROR;
  57
  58         retval = CALL_COMMAND_HANDLER(flash_command_get_bank, 0, &p);
  59         if (retval != ERROR_OK)
  60                 return retval;
  61
  62         if (p != NULL)
  63         {
  64                 char buf[1024];
  65
  66                 /* attempt auto probe */
  67                 if ((retval = p->driver->auto_probe(p)) != ERROR_OK)
  68                         return retval;
  69
  70                 /* We must query the hardware to avoid printing stale information! */
  71                 retval = p->driver->protect_check(p);
  72                 if (retval != ERROR_OK)
  73                         return retval;
  74
  75                 command_print(CMD_CTX,
  76                               "#%" PRIu32 " : %s at 0x%8.8" PRIx32 ", size 0x%8.8" PRIx32 ", buswidth %i, chipwidth %i",
  77                               p->bank_number,
  78                               p->driver->name,
  79                               p->base,
  80                               p->size,
  81                               p->bus_width,
  82                               p->chip_width);
  83                 for (j = 0; j < p->num_sectors; j++)
  84                 {
  85                         char *protect_state;
  86
  87                         if (p->sectors[j].is_protected == 0)
  88                                 protect_state = "not protected";
  89                         else if (p->sectors[j].is_protected == 1)
  90                                 protect_state = "protected";
  91                         else
  92                                 protect_state = "protection state unknown";
  93
  94                         command_print(CMD_CTX,
  95                                       "\t#%3i: 0x%8.8" PRIx32 " (0x%" PRIx32 " %" PRIi32 "kB) %s",
  96                                       j,
  97                                       p->sectors[j].offset,
  98                                       p->sectors[j].size,
  99                                       p->sectors[j].size >> 10,
 100                                       protect_state);
 101                 }
 102
 103                 *buf = '\0'; /* initialize buffer, otherwise it migh contain garbage if driver function fails */
 104                 retval = p->driver->info(p, buf, sizeof(buf));
 105                 command_print(CMD_CTX, "%s", buf);
 106                 if (retval != ERROR_OK)
 107                         LOG_ERROR("error retrieving flash info (%d)", retval);
 108         }
 109
 110         return ERROR_OK;
 111 }
 112
 113 COMMAND_HANDLER(handle_flash_probe_command)
 114 {
 115         struct flash_bank *p;
 116         int retval;
 117
 118         if (CMD_ARGC != 1)
 119         {
 120                 return ERROR_COMMAND_SYNTAX_ERROR;
 121         }
 122
 123         retval = CALL_COMMAND_HANDLER(flash_command_get_bank, 0, &p);
 124         if (retval != ERROR_OK)
 125                 return retval;
 126
 127         if (p)
 128         {
 129                 if ((retval = p->driver->probe(p)) == ERROR_OK)
 130                 {
 131                         command_print(CMD_CTX, "flash '%s' found at 0x%8.8" PRIx32, p->driver->name, p->base);
 132                 }
 133                 else if (retval == ERROR_FLASH_BANK_INVALID)
 134                 {
 135                         command_print(CMD_CTX, "probing failed for flash bank '#%s' at 0x%8.8" PRIx32,
 136                                                   CMD_ARGV[0], p->base);
 137                 }
 138                 else
 139                 {
 140                         command_print(CMD_CTX, "unknown error when probing flash bank '#%s' at 0x%8.8" PRIx32,
 141                                                   CMD_ARGV[0], p->base);
 142                 }
 143         }
 144         else
 145         {
 146                 command_print(CMD_CTX, "flash bank '#%s' is out of bounds", CMD_ARGV[0]);
 147         }
 148
 149         return ERROR_OK;
 150 }
 151
 152 COMMAND_HANDLER(handle_flash_erase_check_command)
 153 {
 154         if (CMD_ARGC != 1)
 155         {
 156                 return ERROR_COMMAND_SYNTAX_ERROR;
 157         }
 158
 159         struct flash_bank *p;
 160         int retval = CALL_COMMAND_HANDLER(flash_command_get_bank, 0, &p);
 161         if (ERROR_OK != retval)
 162                 return retval;
 163
 164         int j;
 165         if ((retval = p->driver->erase_check(p)) == ERROR_OK)
 166         {
 167                 command_print(CMD_CTX, "successfully checked erase state");
 168         }
 169         else
 170         {
 171                 command_print(CMD_CTX, "unknown error when checking erase state of flash bank #%s at 0x%8.8" PRIx32,
 172                         CMD_ARGV[0], p->base);
 173         }
 174
 175         for (j = 0; j < p->num_sectors; j++)
 176         {
 177                 char *erase_state;
 178
 179                 if (p->sectors[j].is_erased == 0)
 180                         erase_state = "not erased";
 181                 else if (p->sectors[j].is_erased == 1)
 182                         erase_state = "erased";
 183                 else
 184                         erase_state = "erase state unknown";
 185
 186                 command_print(CMD_CTX,
 187                               "\t#%3i: 0x%8.8" PRIx32 " (0x%" PRIx32 " %" PRIi32 "kB) %s",
 188                               j,
 189                               p->sectors[j].offset,
 190                               p->sectors[j].size,
 191                               p->sectors[j].size >> 10,
 192                               erase_state);
 193         }
 194
 195         return ERROR_OK;
 196 }
 197
 198 COMMAND_HANDLER(handle_flash_erase_address_command)
 199 {
 200         struct flash_bank *p;
 201         int retval = ERROR_OK;
 202         uint32_t address;
 203         uint32_t length;
 204         bool do_pad = false;
 205         bool do_unlock = false;
 206         struct target *target = get_current_target(CMD_CTX);
 207
 208         while (CMD_ARGC >= 3)
 209         {
 210                 /* Optionally pad out the address range to block/sector
 211                  * boundaries.  We can't know if there's data in that part
 212                  * of the flash; only do padding if we're told to.
 213                  */
 214                 if (strcmp("pad", CMD_ARGV[0]) == 0)
 215                 {
 216                         do_pad = true;
 217                 } else if (strcmp("unlock", CMD_ARGV[0]) == 0)
 218                 {
 219                         do_unlock = true;
 220                 } else
 221                 {
 222                         return ERROR_COMMAND_SYNTAX_ERROR;
 223                 }
 224                 CMD_ARGC--;
 225                 CMD_ARGV++;
 226         }
 227         if (CMD_ARGC != 2)
 228         {
 229                 return ERROR_COMMAND_SYNTAX_ERROR;
 230         }
 231
 232         COMMAND_PARSE_NUMBER(u32, CMD_ARGV[0], address);
 233         COMMAND_PARSE_NUMBER(u32, CMD_ARGV[1], length);
 234
 235         if (length <= 0)
 236         {
 237                 command_print(CMD_CTX, "Length must be >0");
 238                 return ERROR_COMMAND_SYNTAX_ERROR;
 239         }
 240
 241         p = get_flash_bank_by_addr(target, address);
 242         if (p == NULL)
 243         {
 244                 return ERROR_FAIL;
 245         }
 246
 247         /* We can't know if we did a resume + halt, in which case we no longer know the erased state */
 248         flash_set_dirty();
 249
 250         struct duration bench;
 251         duration_start(&bench);
 252
 253         if (do_unlock)
 254         {
 255                 retval = flash_unlock_address_range(target, address, length);
 256         }
 257
 258         if (retval == ERROR_OK)
 259         {
 260                 retval = flash_erase_address_range(target, do_pad, address, length);
 261         }
 262
 263         if ((ERROR_OK == retval) && (duration_measure(&bench) == ERROR_OK))
 264         {
 265                 command_print(CMD_CTX, "erased address 0x%8.8x (length %i)"
 266                                 " in %fs (%0.3f KiB/s)", address, length,
 267                                 duration_elapsed(&bench), duration_kbps(&bench, length));
 268         }
 269
 270         return retval;
 271 }
 272
 273 static int flash_check_sector_parameters(struct command_context *cmd_ctx,
 274                 uint32_t first, uint32_t last, uint32_t num_sectors)
 275 {
 276         if (!(first <= last)) {
 277                 command_print(cmd_ctx, "ERROR: "
 278                                 "first sector must be <= last sector");
 279                 return ERROR_FAIL;
 280         }
 281
 282         if (!(last <= (num_sectors - 1))) {
 283                 command_print(cmd_ctx, "ERROR: last sector must be <= %d",
 284                                 (int) num_sectors - 1);
 285                 return ERROR_FAIL;
 286         }
 287
 288         return ERROR_OK;
 289 }
 290
 291 COMMAND_HANDLER(handle_flash_erase_command)
 292 {
 293         if (CMD_ARGC != 3)
 294                 return ERROR_COMMAND_SYNTAX_ERROR;
 295
 296         uint32_t first;
 297         uint32_t last;
 298
 299         struct flash_bank *p;
 300         int retval;
 301
 302         retval = CALL_COMMAND_HANDLER(flash_command_get_bank, 0, &p);
 303         if (retval != ERROR_OK)
 304                 return retval;
 305
 306         COMMAND_PARSE_NUMBER(u32, CMD_ARGV[1], first);
 307         if (strcmp(CMD_ARGV[2], "last") == 0)
 308                 last = p->num_sectors - 1;
 309         else
 310                 COMMAND_PARSE_NUMBER(u32, CMD_ARGV[2], last);
 311
 312         if ((retval = flash_check_sector_parameters(CMD_CTX,
 313                         first, last, p->num_sectors)) != ERROR_OK)
 314                 return retval;
 315
 316         struct duration bench;
 317         duration_start(&bench);
 318
 319         retval = flash_driver_erase(p, first, last);
 320
 321         if ((ERROR_OK == retval) && (duration_measure(&bench) == ERROR_OK))
 322         {
 323                 command_print(CMD_CTX, "erased sectors %" PRIu32 " "
 324                                 "through %" PRIu32" on flash bank %" PRIu32 " "
 325                                 "in %fs", first, last, p->bank_number, duration_elapsed(&bench));
 326         }
 327
 328         return ERROR_OK;
 329 }
 330
 331 COMMAND_HANDLER(handle_flash_protect_command)
 332 {
 333         if (CMD_ARGC != 4)
 334                 return ERROR_COMMAND_SYNTAX_ERROR;
 335
 336         uint32_t first;
 337         uint32_t last;
 338
 339         struct flash_bank *p;
 340         int retval;
 341
 342         retval = CALL_COMMAND_HANDLER(flash_command_get_bank, 0, &p);
 343         if (retval != ERROR_OK)
 344                 return retval;
 345
 346         COMMAND_PARSE_NUMBER(u32, CMD_ARGV[1], first);
 347         if (strcmp(CMD_ARGV[2], "last") == 0)
 348                 last = p->num_sectors - 1;
 349         else
 350                 COMMAND_PARSE_NUMBER(u32, CMD_ARGV[2], last);
 351
 352         bool set;
 353         COMMAND_PARSE_ON_OFF(CMD_ARGV[3], set);
 354
 355         if ((retval = flash_check_sector_parameters(CMD_CTX,
 356                         first, last, p->num_sectors)) != ERROR_OK)
 357                 return retval;
 358
 359         retval = flash_driver_protect(p, set, first, last);
 360         if (retval == ERROR_OK) {
 361                 command_print(CMD_CTX, "%s protection for sectors %i "
 362                                 "through %i on flash bank %" PRIu32 "",
 363                         (set) ? "set" : "cleared", (int) first,
 364                         (int) last, p->bank_number);
 365         }
 366
 367         return ERROR_OK;
 368 }
 369
 370 COMMAND_HANDLER(handle_flash_write_image_command)
 371 {
 372         struct target *target = get_current_target(CMD_CTX);
 373
 374         struct image image;
 375         uint32_t written;
 376
 377         int retval;
 378
 379         if (CMD_ARGC < 1)
 380         {
 381                 return ERROR_COMMAND_SYNTAX_ERROR;
 382         }
 383
 384         /* flash auto-erase is disabled by default*/
 385         int auto_erase = 0;
 386         bool auto_unlock = false;
 387
 388         for (;;)
 389         {
 390                 if (strcmp(CMD_ARGV[0], "erase") == 0)
 391                 {
 392                         auto_erase = 1;
 393                         CMD_ARGV++;
 394                         CMD_ARGC--;
 395                         command_print(CMD_CTX, "auto erase enabled");
 396                 } else if (strcmp(CMD_ARGV[0], "unlock") == 0)
 397                 {
 398                         auto_unlock = true;
 399                         CMD_ARGV++;
 400                         CMD_ARGC--;
 401                         command_print(CMD_CTX, "auto unlock enabled");
 402                 } else
 403                 {
 404                         break;
 405                 }
 406         }
 407
 408         if (CMD_ARGC < 1)
 409         {
 410                 return ERROR_COMMAND_SYNTAX_ERROR;
 411         }
 412
 413         if (!target)
 414         {
 415                 LOG_ERROR("no target selected");
 416                 return ERROR_FAIL;
 417         }
 418
 419         struct duration bench;
 420         duration_start(&bench);
 421
 422         if (CMD_ARGC >= 2)
 423         {
 424                 image.base_address_set = 1;
 425                 COMMAND_PARSE_NUMBER(llong, CMD_ARGV[1], image.base_address);
 426         }
 427         else
 428         {
 429                 image.base_address_set = 0;
 430                 image.base_address = 0x0;
 431         }
 432
 433         image.start_address_set = 0;
 434
 435         retval = image_open(&image, CMD_ARGV[0], (CMD_ARGC == 3) ? CMD_ARGV[2] : NULL);
 436         if (retval != ERROR_OK)
 437         {
 438                 return retval;
 439         }
 440
 441         retval = flash_write_unlock(target, &image, &written, auto_erase, auto_unlock);
 442         if (retval != ERROR_OK)
 443         {
 444                 image_close(&image);
 445                 return retval;
 446         }
 447
 448         if ((ERROR_OK == retval) && (duration_measure(&bench) == ERROR_OK))
 449         {
 450                 command_print(CMD_CTX, "wrote %" PRIu32 " bytes from file %s "
 451                                 "in %fs (%0.3f KiB/s)", written, CMD_ARGV[0],
 452                                 duration_elapsed(&bench), duration_kbps(&bench, written));
 453         }
 454
 455         image_close(&image);
 456
 457         return retval;
 458 }
 459
 460 COMMAND_HANDLER(handle_flash_fill_command)
 461 {
 462         int err = ERROR_OK;
 463         uint32_t address;
 464         uint32_t pattern;
 465         uint32_t count;
 466         uint32_t wrote = 0;
 467         uint32_t cur_size = 0;
 468         uint32_t chunk_count;
 469         struct target *target = get_current_target(CMD_CTX);
 470         uint32_t i;
 471         uint32_t wordsize;
 472         int retval = ERROR_OK;
 473
 474         static size_t const chunksize = 1024;
 475         uint8_t *chunk = malloc(chunksize);
 476         if (chunk == NULL)
 477                 return ERROR_FAIL;
 478
 479         uint8_t *readback = malloc(chunksize);
 480         if (readback == NULL)
 481         {
 482                 free(chunk);
 483                 return ERROR_FAIL;
 484         }
 485
 486
 487         if (CMD_ARGC != 3)
 488         {
 489                 retval = ERROR_COMMAND_SYNTAX_ERROR;
 490                 goto done;
 491         }
 492
 493
 494         COMMAND_PARSE_NUMBER(u32, CMD_ARGV[0], address);
 495         COMMAND_PARSE_NUMBER(u32, CMD_ARGV[1], pattern);
 496         COMMAND_PARSE_NUMBER(u32, CMD_ARGV[2], count);
 497
 498         if (count == 0)
 499                 goto done;
 500
 501         switch (CMD_NAME[4])
 502         {
 503         case 'w':
 504                 wordsize = 4;
 505                 break;
 506         case 'h':
 507                 wordsize = 2;
 508                 break;
 509         case 'b':
 510                 wordsize = 1;
 511                 break;
 512         default:
 513                 retval = ERROR_COMMAND_SYNTAX_ERROR;
 514                 goto done;
 515         }
 516
 517         chunk_count = MIN(count, (chunksize / wordsize));
 518         switch (wordsize)
 519         {
 520         case 4:
 521                 for (i = 0; i < chunk_count; i++)
 522                 {
 523                         target_buffer_set_u32(target, chunk + i * wordsize, pattern);
 524                 }
 525                 break;
 526         case 2:
 527                 for (i = 0; i < chunk_count; i++)
 528                 {
 529                         target_buffer_set_u16(target, chunk + i * wordsize, pattern);
 530                 }
 531                 break;
 532         case 1:
 533                 memset(chunk, pattern, chunk_count);
 534                 break;
 535         default:
 536                 LOG_ERROR("BUG: can't happen");
 537                 exit(-1);
 538         }
 539
 540         struct duration bench;
 541         duration_start(&bench);
 542
 543         for (wrote = 0; wrote < (count*wordsize); wrote += cur_size)
 544         {
 545                 struct flash_bank *bank;
 546
 547                 bank = get_flash_bank_by_addr(target, address);
 548                 if (bank == NULL)
 549                 {
 550                         retval = ERROR_FAIL;
 551                         goto done;
 552                 }
 553
 554                 cur_size = MIN((count * wordsize - wrote), chunksize);
 555                 err = flash_driver_write(bank, chunk, address - bank->base + wrote, cur_size);
 556                 if (err != ERROR_OK)
 557                 {
 558                         retval = err;
 559                         goto done;
 560                 }
 561
 562                 err = flash_driver_read(bank, readback, address - bank->base + wrote, cur_size);
 563                 if (err != ERROR_OK)
 564                 {
 565                         retval = err;
 566                         goto done;
 567                 }
 568
 569                 unsigned i;
 570                 for (i = 0; i < cur_size; i++)
 571                 {
 572                         if (readback[i]!=chunk[i])
 573                         {
 574                                 LOG_ERROR("Verification error address 0x%08" PRIx32 ", read back 0x%02x, expected 0x%02x",
 575                                                   address + wrote + i, readback[i], chunk[i]);
 576                                 retval = ERROR_FAIL;
 577                                 goto done;
 578                         }
 579                 }
 580         }
 581
 582         if (duration_measure(&bench) == ERROR_OK)
 583         {
 584                 command_print(CMD_CTX, "wrote %" PRIu32 " bytes to 0x%8.8" PRIx32
 585                                 " in %fs (%0.3f KiB/s)", wrote, address,
 586                                 duration_elapsed(&bench), duration_kbps(&bench, wrote));
 587         }
 588
 589 done:
 590         free(readback);
 591         free(chunk);
 592
 593         return retval;
 594 }
 595
 596 COMMAND_HANDLER(handle_flash_write_bank_command)
 597 {
 598         uint32_t offset;
 599         uint8_t *buffer;
 600         struct fileio fileio;
 601
 602         if (CMD_ARGC != 3)
 603                 return ERROR_COMMAND_SYNTAX_ERROR;
 604
 605         struct duration bench;
 606         duration_start(&bench);
 607
 608         struct flash_bank *p;
 609         int retval = CALL_COMMAND_HANDLER(flash_command_get_bank, 0, &p);
 610         if (ERROR_OK != retval)
 611                 return retval;
 612
 613         COMMAND_PARSE_NUMBER(u32, CMD_ARGV[2], offset);
 614
 615         if (fileio_open(&fileio, CMD_ARGV[1], FILEIO_READ, FILEIO_BINARY) != ERROR_OK)
 616         {
 617                 return ERROR_OK;
 618         }
 619
 620         buffer = malloc(fileio.size);
 621         size_t buf_cnt;
 622         if (fileio_read(&fileio, fileio.size, buffer, &buf_cnt) != ERROR_OK)
 623         {
 624                 free(buffer);
 625                 fileio_close(&fileio);
 626                 return ERROR_OK;
 627         }
 628
 629         retval = flash_driver_write(p, buffer, offset, buf_cnt);
 630
 631         free(buffer);
 632         buffer = NULL;
 633
 634         if ((ERROR_OK == retval) && (duration_measure(&bench) == ERROR_OK))
 635         {
 636                 command_print(CMD_CTX, "wrote %ld bytes from file %s to flash bank %u"
 637                                 " at offset 0x%8.8" PRIx32 " in %fs (%0.3f KiB/s)",
 638                                 (long)fileio.size, CMD_ARGV[1], p->bank_number, offset,
 639                                 duration_elapsed(&bench), duration_kbps(&bench, fileio.size));
 640         }
 641
 642         fileio_close(&fileio);
 643
 644         return retval;
 645 }
 646
 647 void flash_set_dirty(void)
 648 {
 649         struct flash_bank *c;
 650         int i;
 651
 652         /* set all flash to require erasing */
 653         for (c = flash_bank_list(); c; c = c->next)
 654         {
 655                 for (i = 0; i < c->num_sectors; i++)
 656                 {
 657                         c->sectors[i].is_erased = 0;
 658                 }
 659         }
 660 }
 661
 662 static const struct command_registration flash_exec_command_handlers[] = {
 663         {
 664                 .name = "probe",
 665                 .handler = handle_flash_probe_command,
 666                 .mode = COMMAND_EXEC,
 667                 .usage = "bank_id",
 668                 .help = "Identify a flash bank.",
 669         },
 670         {
 671                 .name = "info",
 672                 .handler = handle_flash_info_command,
 673                 .mode = COMMAND_EXEC,
 674                 .usage = "bank_id",
 675                 .help = "Print information about a flash bank.",
 676         },
 677         {
 678                 .name = "erase_check",
 679                 .handler = handle_flash_erase_check_command,
 680                 .mode = COMMAND_EXEC,
 681                 .usage = "bank_id",
 682                 .help = "Check erase state of all blocks in a "
 683                         "flash bank.",
 684         },
 685         {
 686                 .name = "erase_sector",
 687                 .handler = handle_flash_erase_command,
 688                 .mode = COMMAND_EXEC,
 689                 .usage = "bank_id first_sector_num last_sector_num",
 690                 .help = "Erase a range of sectors in a flash bank.",
 691         },
 692         {
 693                 .name = "erase_address",
 694                 .handler = handle_flash_erase_address_command,
 695                 .mode = COMMAND_EXEC,
 696                 .usage = "['pad'] ['unlock'] address length",
 697                 .help = "Erase flash sectors starting at address and "
 698                         "continuing for length bytes.  If 'pad' is specified, "
 699                         "data outside that range may also be erased: the start "
 700                         "address may be decreased, and length increased, so "
 701                         "that all of the first and last sectors are erased. "
 702                         "If 'unlock' is specified, then the flash is unprotected "
 703                         "before erasing.",
 704
 705         },
 706         {
 707                 .name = "fillw",
 708                 .handler = handle_flash_fill_command,
 709                 .mode = COMMAND_EXEC,
 710                 .usage = "address value n",
 711                 .help = "Fill n words with 32-bit value, starting at "
 712                         "word address.  (No autoerase.)",
 713         },
 714         {
 715                 .name = "fillh",
 716                 .handler = handle_flash_fill_command,
 717                 .mode = COMMAND_EXEC,
 718                 .usage = "address value n",
 719                 .help = "Fill n halfwords with 16-bit value, starting at "
 720                         "word address.  (No autoerase.)",
 721         },
 722         {
 723                 .name = "fillb",
 724                 .handler = handle_flash_fill_command,
 725                 .mode = COMMAND_EXEC,
 726                 .usage = "address value n",
 727                 .help = "Fill n bytes with 8-bit value, starting at "
 728                         "word address.  (No autoerase.)",
 729         },
 730         {
 731                 .name = "write_bank",
 732                 .handler = handle_flash_write_bank_command,
 733                 .mode = COMMAND_EXEC,
 734                 .usage = "bank_id filename offset",
 735                 .help = "Write binary data from file to flash bank, "
 736                         "starting at specified byte offset from the "
 737                         "beginning of the bank.",
 738         },
 739         {
 740                 .name = "write_image",
 741                 .handler = handle_flash_write_image_command,
 742                 .mode = COMMAND_EXEC,
 743                 .usage = "[erase] [unlock] filename [offset [file_type]]",
 744                 .help = "Write an image to flash.  Optionally first unprotect "
 745                         "and/or erase the region to be used.  Allow optional "
 746                         "offset from beginning of bank (defaults to zero)",
 747         },
 748         {
 749                 .name = "protect",
 750                 .handler = handle_flash_protect_command,
 751                 .mode = COMMAND_EXEC,
 752                 .usage = "bank_id first_sector [last_sector|'last'] "
 753                         "('on'|'off')",
 754                 .help = "Turn protection on or off for a range of sectors "
 755                         "in a given flash bank.",
 756         },
 757         COMMAND_REGISTRATION_DONE
 758 };
 759
 760 static int flash_init_drivers(struct command_context *cmd_ctx)
 761 {
 762         if (!flash_bank_list())
 763                 return ERROR_OK;
 764
 765         struct command *parent = command_find_in_context(cmd_ctx, "flash");
 766         return register_commands(cmd_ctx, parent, flash_exec_command_handlers);
 767 }
 768
 769
 770 COMMAND_HANDLER(handle_flash_bank_command)
 771 {
 772         if (CMD_ARGC < 7)
 773         {
 774                 LOG_ERROR("usage: flash bank <name> <driver> "
 775                                 "<base> <size> <chip_width> <bus_width> <target>");
 776                 return ERROR_COMMAND_SYNTAX_ERROR;
 777         }
 778         // save bank name and advance arguments for compatibility
 779         const char *bank_name = *CMD_ARGV++;
 780         CMD_ARGC--;
 781
 782         struct target *target;
 783         if ((target = get_target(CMD_ARGV[5])) == NULL)
 784         {
 785                 LOG_ERROR("target '%s' not defined", CMD_ARGV[5]);
 786                 return ERROR_FAIL;
 787         }
 788
 789         const char *driver_name = CMD_ARGV[0];
 790         struct flash_driver *driver = flash_driver_find_by_name(driver_name);
 791         if (NULL == driver)
 792         {
 793                 /* no matching flash driver found */
 794                 LOG_ERROR("flash driver '%s' not found", driver_name);
 795                 return ERROR_FAIL;
 796         }
 797
 798         /* check the flash bank name is unique */
 799         if (get_flash_bank_by_name_noprobe(bank_name) != NULL)
 800         {
 801                 /* flash bank name already exists  */
 802                 LOG_ERROR("flash bank name '%s' already exists", bank_name);
 803                 return ERROR_FAIL;
 804         }
 805
 806         /* register flash specific commands */
 807         if (NULL != driver->commands)
 808         {
 809                 int retval = register_commands(CMD_CTX, NULL,
 810                                 driver->commands);
 811                 if (ERROR_OK != retval)
 812                 {
 813                         LOG_ERROR("couldn't register '%s' commands",
 814                                         driver_name);
 815                         return ERROR_FAIL;
 816                 }
 817         }
 818
 819         struct flash_bank *c = malloc(sizeof(*c));
 820         c->name = strdup(bank_name);
 821         c->target = target;
 822         c->driver = driver;
 823         c->driver_priv = NULL;
 824         COMMAND_PARSE_NUMBER(u32, CMD_ARGV[1], c->base);
 825         COMMAND_PARSE_NUMBER(u32, CMD_ARGV[2], c->size);
 826         COMMAND_PARSE_NUMBER(int, CMD_ARGV[3], c->chip_width);
 827         COMMAND_PARSE_NUMBER(int, CMD_ARGV[4], c->bus_width);
 828         c->num_sectors = 0;
 829         c->sectors = NULL;
 830         c->next = NULL;
 831
 832         int retval;
 833         retval = CALL_COMMAND_HANDLER(driver->flash_bank_command, c);
 834         if (ERROR_OK != retval)
 835         {
 836                 LOG_ERROR("'%s' driver rejected flash bank at 0x%8.8" PRIx32,
 837                                 driver_name, c->base);
 838                 free(c);
 839                 return retval;
 840         }
 841
 842         flash_bank_add(c);
 843
 844         return ERROR_OK;
 845 }
 846
 847 COMMAND_HANDLER(handle_flash_banks_command)
 848 {
 849         if (CMD_ARGC != 0)
 850                 return ERROR_INVALID_ARGUMENTS;
 851
 852         unsigned n = 0;
 853         for (struct flash_bank *p = flash_bank_list(); p; p = p->next, n++)
 854         {
 855                 LOG_USER("#%" PRIu32 " : %s at 0x%8.8" PRIx32 ", size 0x%8.8" PRIx32 ", "
 856                         "buswidth %u, chipwidth %u", p->bank_number,
 857                         p->driver->name, p->base, p->size,
 858                         p->bus_width, p->chip_width);
 859         }
 860         return ERROR_OK;
 861 }
 862
 863 static int jim_flash_list(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
 864 {
 865         if (argc != 1)
 866         {
 867                 Jim_WrongNumArgs(interp, 1, argv,
 868                                 "no arguments to 'flash list' command");
 869                 return JIM_ERR;
 870         }
 871
 872         Jim_Obj *list = Jim_NewListObj(interp, NULL, 0);
 873
 874         for (struct flash_bank *p = flash_bank_list(); p; p = p->next)
 875         {
 876                 Jim_Obj *elem = Jim_NewListObj(interp, NULL, 0);
 877
 878                 Jim_ListAppendElement(interp, elem, Jim_NewStringObj(interp, "name", -1));
 879                 Jim_ListAppendElement(interp, elem, Jim_NewStringObj(interp, p->driver->name, -1));
 880                 Jim_ListAppendElement(interp, elem, Jim_NewStringObj(interp, "base", -1));
 881                 Jim_ListAppendElement(interp, elem, Jim_NewIntObj(interp, p->base));
 882                 Jim_ListAppendElement(interp, elem, Jim_NewStringObj(interp, "size", -1));
 883                 Jim_ListAppendElement(interp, elem, Jim_NewIntObj(interp, p->size));
 884                 Jim_ListAppendElement(interp, elem, Jim_NewStringObj(interp, "bus_width", -1));
 885                 Jim_ListAppendElement(interp, elem, Jim_NewIntObj(interp, p->bus_width));
 886                 Jim_ListAppendElement(interp, elem, Jim_NewStringObj(interp, "chip_width", -1));
 887                 Jim_ListAppendElement(interp, elem, Jim_NewIntObj(interp, p->chip_width));
 888
 889                 Jim_ListAppendElement(interp, list, elem);
 890         }
 891
 892         Jim_SetResult(interp, list);
 893
 894         return JIM_OK;
 895 }
 896
 897
 898 COMMAND_HANDLER(handle_flash_init_command)
 899 {
 900         if (CMD_ARGC != 0)
 901                 return ERROR_COMMAND_SYNTAX_ERROR;
 902
 903         static bool flash_initialized = false;
 904         if (flash_initialized)
 905         {
 906                 LOG_INFO("'flash init' has already been called");
 907                 return ERROR_OK;
 908         }
 909         flash_initialized = true;
 910
 911         LOG_DEBUG("Initializing flash devices...");
 912         return flash_init_drivers(CMD_CTX);
 913 }
 914
 915 static const struct command_registration flash_config_command_handlers[] = {
 916         {
 917                 .name = "bank",
 918                 .handler = handle_flash_bank_command,
 919                 .mode = COMMAND_CONFIG,
 920                 .usage = "bank_id driver_name base_address size_bytes "
 921                         "chip_width_bytes bus_width_bytes target "
 922                         "[driver_options ...]",
 923                 .help = "Define a new bank with the given name, "
 924                         "using the specified NOR flash driver.",
 925         },
 926         {
 927                 .name = "init",
 928                 .mode = COMMAND_CONFIG,
 929                 .handler = handle_flash_init_command,
 930                 .help = "Initialize flash devices.",
 931         },
 932         {
 933                 .name = "banks",
 934                 .mode = COMMAND_ANY,
 935                 .handler = handle_flash_banks_command,
 936                 .help = "Display table with information about flash banks.",
 937         },
 938         {
 939                 .name = "list",
 940                 .mode = COMMAND_ANY,
 941                 .jim_handler = jim_flash_list,
 942                 .help = "Returns a list of details about the flash banks.",
 943         },
 944         COMMAND_REGISTRATION_DONE
 945 };
 946 static const struct command_registration flash_command_handlers[] = {
 947         {
 948                 .name = "flash",
 949                 .mode = COMMAND_ANY,
 950                 .help = "NOR flash command group",
 951                 .chain = flash_config_command_handlers,
 952         },
 953         COMMAND_REGISTRATION_DONE
 954 };
 955
 956 int flash_register_commands(struct command_context *cmd_ctx)
 957 {
 958         return register_commands(cmd_ctx, NULL, flash_command_handlers);
 959 }