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   1 /***************************************************************************
   2  *   Copyright (C) 2005 by Dominic Rath                                    *
   3  *   Dominic.Rath@gmx.de                                                   *
   4  *                                                                         *
   5  *   This program is free software; you can redistribute it and/or modify  *
   6  *   it under the terms of the GNU General Public License as published by  *
   7  *   the Free Software Foundation; either version 2 of the License, or     *
   8  *   (at your option) any later version.                                   *
   9  *                                                                         *
  10  *   This program is distributed in the hope that it will be useful,       *
  11  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  12  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  13  *   GNU General Public License for more details.                          *
  14  *                                                                         *
  15  *   You should have received a copy of the GNU General Public License     *
  16  *   along with this program; if not, write to the                         *
  17  *   Free Software Foundation, Inc.,                                       *
  18  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
  19  ***************************************************************************/
  20 #ifdef HAVE_CONFIG_H
  21 #include "config.h"
  22 #endif
  23
  24 #include "flash.h"
  25 #include "command.h"
  26 #include "target.h"
  27 #include "time_support.h"
  28 #include "fileio.h"
  29 #include "image.h"
  30 #include "log.h"
  31
  32 #include <string.h>
  33 #include <unistd.h>
  34 #include <stdlib.h>
  35 #include <sys/types.h>
  36 #include <sys/stat.h>
  37 #include <errno.h>
  38 #include <inttypes.h>
  39
  40 /* command handlers */
  41 int handle_flash_bank_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  42 int handle_flash_banks_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  43 int handle_flash_info_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  44 int handle_flash_probe_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  45 int handle_flash_erase_check_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  46 int handle_flash_protect_check_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  47 int handle_flash_erase_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  48 int handle_flash_write_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  49 int handle_flash_write_binary_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  50 int handle_flash_write_image_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  51 int handle_flash_protect_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  52 int handle_flash_auto_erase_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  53
  54 /* flash drivers
  55  */
  56 extern flash_driver_t lpc2000_flash;
  57 extern flash_driver_t cfi_flash;
  58 extern flash_driver_t at91sam7_flash;
  59 extern flash_driver_t str7x_flash;
  60 extern flash_driver_t str9x_flash;
  61 extern flash_driver_t stellaris_flash;
  62 extern flash_driver_t str9xpec_flash;
  63 extern flash_driver_t stm32x_flash;
  64
  65 flash_driver_t *flash_drivers[] =
  66 {
  67         &lpc2000_flash,
  68         &cfi_flash,
  69         &at91sam7_flash,
  70         &str7x_flash,
  71         &str9x_flash,
  72         &stellaris_flash,
  73         &str9xpec_flash,
  74         &stm32x_flash,
  75         NULL,
  76 };
  77
  78 flash_bank_t *flash_banks;
  79 static  command_t *flash_cmd;
  80 static int auto_erase = 0;
  81
  82 int flash_register_commands(struct command_context_s *cmd_ctx)
  83 {
  84         flash_cmd = register_command(cmd_ctx, NULL, "flash", NULL, COMMAND_ANY, NULL);
  85
  86         register_command(cmd_ctx, flash_cmd, "bank", handle_flash_bank_command, COMMAND_CONFIG, NULL);
  87
  88         return ERROR_OK;
  89 }
  90
  91 int flash_init(struct command_context_s *cmd_ctx)
  92 {
  93         if (flash_banks)
  94         {
  95                 register_command(cmd_ctx, flash_cmd, "banks", handle_flash_banks_command, COMMAND_EXEC,
  96                                                  "list configured flash banks ");
  97                 register_command(cmd_ctx, flash_cmd, "info", handle_flash_info_command, COMMAND_EXEC,
  98                                                  "print info about flash bank <num>");
  99                 register_command(cmd_ctx, flash_cmd, "probe", handle_flash_probe_command, COMMAND_EXEC,
 100                                                  "identify flash bank <num>");
 101                 register_command(cmd_ctx, flash_cmd, "erase_check", handle_flash_erase_check_command, COMMAND_EXEC,
 102                                                  "check erase state of sectors in flash bank <num>");
 103                 register_command(cmd_ctx, flash_cmd, "protect_check", handle_flash_protect_check_command, COMMAND_EXEC,
 104                                                  "check protection state of sectors in flash bank <num>");
 105                 register_command(cmd_ctx, flash_cmd, "erase", handle_flash_erase_command, COMMAND_EXEC,
 106                                                  "erase sectors at <bank> <first> <last>");
 107                 register_command(cmd_ctx, flash_cmd, "write", handle_flash_write_binary_command, COMMAND_EXEC,
 108                                                  "DEPRECATED, use 'write_binary' or 'write_image' instead");
 109                 register_command(cmd_ctx, flash_cmd, "write_binary", handle_flash_write_binary_command, COMMAND_EXEC,
 110                                                  "write binary <bank> <file> <offset>");
 111                 register_command(cmd_ctx, flash_cmd, "write_image", handle_flash_write_image_command, COMMAND_EXEC,
 112                                                  "write image <file> [offset] [type]");
 113                 register_command(cmd_ctx, flash_cmd, "protect", handle_flash_protect_command, COMMAND_EXEC,
 114                                                  "set protection of sectors at <bank> <first> <last> <on|off>");
 115                 register_command(cmd_ctx, flash_cmd, "auto_erase", handle_flash_auto_erase_command, COMMAND_EXEC,
 116                                                  "auto erase flash sectors <on|off>");
 117         }
 118
 119         return ERROR_OK;
 120 }
 121
 122 flash_bank_t *get_flash_bank_by_num(int num)
 123 {
 124         flash_bank_t *p;
 125         int i = 0;
 126
 127         for (p = flash_banks; p; p = p->next)
 128         {
 129                 if (i++ == num)
 130                 {
 131                         return p;
 132                 }
 133         }
 134
 135         return NULL;
 136 }
 137
 138 /* flash_bank <driver> <base> <size> <chip_width> <bus_width> <target> [driver_options ...]
 139  */
 140 int handle_flash_bank_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
 141 {
 142         int i;
 143         int found = 0;
 144         target_t *target;
 145
 146         if (argc < 6)
 147         {
 148                 WARNING("incomplete flash_bank configuration");
 149                 WARNING("flash_bank <driver> <base> <size> <chip_width> <bus_width> <target> [driver_options ...]");
 150                 return ERROR_OK;
 151         }
 152
 153         if ((target = get_target_by_num(strtoul(args[5], NULL, 0))) == NULL)
 154         {
 155                 ERROR("target %lu not defined", strtoul(args[5], NULL, 0));
 156                 return ERROR_OK;
 157         }
 158
 159         for (i = 0; flash_drivers[i]; i++)
 160         {
 161                 if (strcmp(args[0], flash_drivers[i]->name) == 0)
 162                 {
 163                         flash_bank_t *p, *c;
 164
 165                         /* register flash specific commands */
 166                         if (flash_drivers[i]->register_commands(cmd_ctx) != ERROR_OK)
 167                         {
 168                                 ERROR("couldn't register '%s' commands", args[0]);
 169                                 exit(-1);
 170                         }
 171
 172                         c = malloc(sizeof(flash_bank_t));
 173                         c->target = target;
 174                         c->driver = flash_drivers[i];
 175                         c->driver_priv = NULL;
 176                         c->base = strtoul(args[1], NULL, 0);
 177                         c->size = strtoul(args[2], NULL, 0);
 178                         c->chip_width = strtoul(args[3], NULL, 0);
 179                         c->bus_width = strtoul(args[4], NULL, 0);
 180                         c->next = NULL;
 181
 182                         if (flash_drivers[i]->flash_bank_command(cmd_ctx, cmd, args, argc, c) != ERROR_OK)
 183                         {
 184                                 ERROR("'%s' driver rejected flash bank at 0x%8.8x", args[0], c->base);
 185                                 free(c);
 186                                 return ERROR_OK;
 187                         }
 188
 189                         /* put flash bank in linked list */
 190                         if (flash_banks)
 191                         {
 192                                 /* find last flash bank */
 193                                 for (p = flash_banks; p && p->next; p = p->next);
 194                                 if (p)
 195                                         p->next = c;
 196                         }
 197                         else
 198                         {
 199                                 flash_banks = c;
 200                         }
 201
 202                         found = 1;
 203                 }
 204         }
 205
 206         /* no matching flash driver found */
 207         if (!found)
 208         {
 209                 ERROR("flash driver '%s' not found", args[0]);
 210                 exit(-1);
 211         }
 212
 213         return ERROR_OK;
 214 }
 215
 216 int handle_flash_banks_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
 217 {
 218         flash_bank_t *p;
 219         int i = 0;
 220
 221         if (!flash_banks)
 222         {
 223                 command_print(cmd_ctx, "no flash banks configured");
 224                 return ERROR_OK;
 225         }
 226
 227         for (p = flash_banks; p; p = p->next)
 228         {
 229                 command_print(cmd_ctx, "#%i: %s at 0x%8.8x, size 0x%8.8x, buswidth %i, chipwidth %i",
 230                                           i++, p->driver->name, p->base, p->size, p->bus_width, p->chip_width);
 231         }
 232
 233         return ERROR_OK;
 234 }
 235
 236 int handle_flash_info_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
 237 {
 238         flash_bank_t *p;
 239         int i = 0;
 240         int j = 0;
 241
 242         if (argc != 1)
 243         {
 244                 command_print(cmd_ctx, "usage: flash info <num>");
 245                 return ERROR_OK;
 246         }
 247
 248         for (p = flash_banks; p; p = p->next, i++)
 249         {
 250                 if (i == strtoul(args[0], NULL, 0))
 251                 {
 252                         char buf[1024];
 253
 254                         command_print(cmd_ctx, "#%i: %s at 0x%8.8x, size 0x%8.8x, buswidth %i, chipwidth %i",
 255                                                 i, p->driver->name, p->base, p->size, p->bus_width, p->chip_width);
 256                         for (j = 0; j < p->num_sectors; j++)
 257                         {
 258                                 char *erase_state, *protect_state;
 259
 260                                 if (p->sectors[j].is_erased == 0)
 261                                         erase_state = "not erased";
 262                                 else if (p->sectors[j].is_erased == 1)
 263                                         erase_state = "erased";
 264                                 else
 265                                         erase_state = "erase state unknown";
 266
 267                                 if (p->sectors[j].is_protected == 0)
 268                                         protect_state = "not protected";
 269                                 else if (p->sectors[j].is_protected == 1)
 270                                         protect_state = "protected";
 271                                 else
 272                                         protect_state = "protection state unknown";
 273
 274                                 command_print(cmd_ctx, "\t#%i: 0x%8.8x (0x%x %ikB) %s, %s",
 275                                                         j, p->sectors[j].offset, p->sectors[j].size, p->sectors[j].size>>10,
 276                                                         erase_state, protect_state);
 277                         }
 278
 279                         p->driver->info(p, buf, 1024);
 280                         command_print(cmd_ctx, "%s", buf);
 281                 }
 282         }
 283
 284         return ERROR_OK;
 285 }
 286
 287 int handle_flash_probe_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
 288 {
 289         flash_bank_t *p;
 290         int retval;
 291
 292         if (argc != 1)
 293         {
 294                 command_print(cmd_ctx, "usage: flash probe <num>");
 295                 return ERROR_OK;
 296         }
 297
 298         p = get_flash_bank_by_num(strtoul(args[0], NULL, 0));
 299         if (p)
 300         {
 301                 if ((retval = p->driver->probe(p)) == ERROR_OK)
 302                 {
 303                         command_print(cmd_ctx, "flash '%s' found at 0x%8.8x", p->driver->name, p->base);
 304                 }
 305                 else if (retval == ERROR_FLASH_BANK_INVALID)
 306                 {
 307                         command_print(cmd_ctx, "probing failed for flash bank '#%s' at 0x%8.8x",
 308                                                   args[0], p->base);
 309                 }
 310                 else
 311                 {
 312                         command_print(cmd_ctx, "unknown error when probing flash bank '#%s' at 0x%8.8x",
 313                                                   args[0], p->base);
 314                 }
 315         }
 316         else
 317         {
 318                 command_print(cmd_ctx, "flash bank '#%s' is out of bounds", args[0]);
 319         }
 320
 321         return ERROR_OK;
 322 }
 323
 324 int handle_flash_erase_check_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
 325 {
 326         flash_bank_t *p;
 327         int retval;
 328
 329         if (argc != 1)
 330         {
 331                 command_print(cmd_ctx, "usage: flash erase_check <num>");
 332                 return ERROR_OK;
 333         }
 334
 335         p = get_flash_bank_by_num(strtoul(args[0], NULL, 0));
 336         if (p)
 337         {
 338                 if ((retval = p->driver->erase_check(p)) == ERROR_OK)
 339                 {
 340                         command_print(cmd_ctx, "successfully checked erase state", p->driver->name, p->base);
 341                 }
 342                 else
 343                 {
 344                         command_print(cmd_ctx, "unknown error when checking erase state of flash bank #%s at 0x%8.8x",
 345                                 args[0], p->base);
 346                 }
 347         }
 348         else
 349         {
 350                 command_print(cmd_ctx, "flash bank '#%s' is out of bounds", args[0]);
 351         }
 352
 353         return ERROR_OK;
 354 }
 355
 356 int handle_flash_protect_check_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
 357 {
 358         flash_bank_t *p;
 359         int retval;
 360
 361         if (argc != 1)
 362         {
 363                 command_print(cmd_ctx, "usage: flash protect_check <num>");
 364                 return ERROR_OK;
 365         }
 366
 367         p = get_flash_bank_by_num(strtoul(args[0], NULL, 0));
 368         if (p)
 369         {
 370                 if ((retval = p->driver->protect_check(p)) == ERROR_OK)
 371                 {
 372                         command_print(cmd_ctx, "successfully checked protect state");
 373                 }
 374                 else if (retval == ERROR_FLASH_OPERATION_FAILED)
 375                 {
 376                         command_print(cmd_ctx, "checking protection state failed (possibly unsupported) by flash #%s at 0x%8.8x", args[0], p->base);
 377                 }
 378                 else
 379                 {
 380                         command_print(cmd_ctx, "unknown error when checking protection state of flash bank '#%s' at 0x%8.8x", args[0], p->base);
 381                 }
 382         }
 383         else
 384         {
 385                 command_print(cmd_ctx, "flash bank '#%s' is out of bounds", args[0]);
 386         }
 387
 388         return ERROR_OK;
 389 }
 390
 391 int handle_flash_erase_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
 392 {
 393         if (argc > 2)
 394         {
 395                 int first = strtoul(args[1], NULL, 0);
 396                 int last = strtoul(args[2], NULL, 0);
 397                 int retval;
 398                 flash_bank_t *p = get_flash_bank_by_num(strtoul(args[0], NULL, 0));
 399                 duration_t duration;
 400                 char *duration_text;
 401
 402                 duration_start_measure(&duration);
 403
 404                 if (!p)
 405                 {
 406                         command_print(cmd_ctx, "flash bank '#%s' is out of bounds", args[0]);
 407                         return ERROR_OK;
 408                 }
 409
 410                 if ((retval = p->driver->erase(p, first, last)) != ERROR_OK)
 411                 {
 412                         switch (retval)
 413                         {
 414                                 case ERROR_TARGET_NOT_HALTED:
 415                                         command_print(cmd_ctx, "can't work with this flash while target is running");
 416                                         break;
 417                                 case ERROR_INVALID_ARGUMENTS:
 418                                         command_print(cmd_ctx, "usage: flash_erase <bank> <first> <last>");
 419                                         break;
 420                                 case ERROR_FLASH_BANK_INVALID:
 421                                         command_print(cmd_ctx, "no '%s' flash found at 0x%8.8x", p->driver->name, p->base);
 422                                         break;
 423                                 case ERROR_FLASH_OPERATION_FAILED:
 424                                         command_print(cmd_ctx, "flash erase error");
 425                                         break;
 426                                 case ERROR_FLASH_SECTOR_INVALID:
 427                                         command_print(cmd_ctx, "sector number(s) invalid");
 428                                         break;
 429                                 case ERROR_OK:
 430                                         command_print(cmd_ctx, "erased flash sectors %i to %i", first, last);
 431                                         break;
 432                                 default:
 433                                         command_print(cmd_ctx, "unknown error");
 434                         }
 435                 }
 436                 else
 437                 {
 438                         duration_stop_measure(&duration, &duration_text);
 439
 440                         command_print(cmd_ctx, "erased sectors %i through %i on flash bank %i in %s", first, last, strtoul(args[0], 0, 0), duration_text);
 441                         free(duration_text);
 442                 }
 443         }
 444         else
 445         {
 446                 command_print(cmd_ctx, "usage: flash erase <bank> <first> <last>");
 447         }
 448
 449         return ERROR_OK;
 450 }
 451
 452 int handle_flash_protect_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
 453 {
 454         if (argc > 3)
 455         {
 456                 int first = strtoul(args[1], NULL, 0);
 457                 int last = strtoul(args[2], NULL, 0);
 458                 int set;
 459                 int retval;
 460                 flash_bank_t *p = get_flash_bank_by_num(strtoul(args[0], NULL, 0));
 461                 if (!p)
 462                 {
 463                         command_print(cmd_ctx, "flash bank '#%s' is out of bounds", args[0]);
 464                         return ERROR_OK;
 465                 }
 466
 467                 if (strcmp(args[3], "on") == 0)
 468                         set = 1;
 469                 else if (strcmp(args[3], "off") == 0)
 470                         set = 0;
 471                 else
 472                 {
 473                         command_print(cmd_ctx, "usage: flash protect <bank> <first> <last> <on|off>");
 474                         return ERROR_OK;
 475                 }
 476
 477                 if ((retval = p->driver->protect(p, set, first, last)) != ERROR_OK)
 478                 {
 479                         switch (retval)
 480                         {
 481                                 case ERROR_TARGET_NOT_HALTED:
 482                                         command_print(cmd_ctx, "can't work with this flash while target is running");
 483                                         break;
 484                                 case ERROR_INVALID_ARGUMENTS:
 485                                         command_print(cmd_ctx, "usage: flash protect <bank> <first> <last> <on|off>");
 486                                         break;
 487                                 case ERROR_FLASH_BANK_INVALID:
 488                                         command_print(cmd_ctx, "no '%s' flash found at 0x%8.8x", p->driver->name, p->base);
 489                                         break;
 490                                 case ERROR_FLASH_OPERATION_FAILED:
 491                                         command_print(cmd_ctx, "flash program error");
 492                                         break;
 493                                 case ERROR_FLASH_SECTOR_INVALID:
 494                                         command_print(cmd_ctx, "sector number(s) invalid");
 495                                         break;
 496                                 case ERROR_OK:
 497                                         command_print(cmd_ctx, "protection of flash sectors %i to %i turned %s", first, last, args[3]);
 498                                         break;
 499                                 default:
 500                                         command_print(cmd_ctx, "unknown error");
 501                         }
 502                 }
 503                 else
 504                 {
 505                         command_print(cmd_ctx, "%s protection for sectors %i through %i on flash bank %i", (set) ? "set" : "cleared", first, last, strtoul(args[0], 0, 0));
 506                 }
 507         }
 508         else
 509         {
 510                 command_print(cmd_ctx, "usage: flash protect <bank> <first> <last> <on|off>");
 511         }
 512
 513         return ERROR_OK;
 514 }
 515
 516 int handle_flash_write_image_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
 517 {
 518         target_t *target = get_current_target(cmd_ctx);
 519
 520         image_t image;
 521         u32 written;
 522         char *error_str;
 523         int *failed;
 524
 525         int i;
 526
 527         duration_t duration;
 528         char *duration_text;
 529
 530         int retval;
 531
 532         if (!strcmp(cmd, "write"))
 533         {
 534                 command_print(cmd_ctx, "'flash write' has been deprecated in favor of 'flash write_binary' and 'flash write_image'");
 535                 DEBUG("'flash write' has been deprecated in favor of 'flash write_binary' and 'flash write_image'");
 536         }
 537
 538         if (argc < 1)
 539         {
 540                 command_print(cmd_ctx, "usage: flash write <file> [offset] [type]");
 541                 return ERROR_OK;
 542         }
 543
 544         if (!target)
 545         {
 546                 ERROR("no target selected");
 547                 return ERROR_OK;
 548         }
 549
 550         duration_start_measure(&duration);
 551
 552         if (argc >= 2)
 553         {
 554                 image.base_address_set = 1;
 555                 image.base_address = strtoul(args[1], NULL, 0);
 556         }
 557         else
 558         {
 559                 image.base_address_set = 0;
 560                 image.base_address = 0x0;
 561         }
 562
 563         image.start_address_set = 0;
 564
 565         if (image_open(&image, args[0], (argc == 4) ? args[2] : NULL) != ERROR_OK)
 566         {
 567                 command_print(cmd_ctx, "flash write error: %s", image.error_str);
 568                 return ERROR_OK;
 569         }
 570
 571         failed = malloc(sizeof(int) * image.num_sections);
 572
 573         if ((retval = flash_write(target, &image, &written, &error_str, failed, auto_erase)) != ERROR_OK)
 574         {
 575                 command_print(cmd_ctx, "failed writing image %s: %s", args[0], error_str);
 576                 free(error_str);
 577         }
 578
 579         for (i = 0; i < image.num_sections; i++)
 580         {
 581                 if (failed[i])
 582                 {
 583                         command_print(cmd_ctx, "didn't write section at 0x%8.8x, size 0x%8.8x",
 584                                         image.sections[i].base_address, image.sections[i].size);
 585                 }
 586         }
 587
 588         duration_stop_measure(&duration, &duration_text);
 589         command_print(cmd_ctx, "wrote %u byte from file %s in %s (%f kb/s)",
 590                 written, args[0], duration_text,
 591                 (float)written / 1024.0 / ((float)duration.duration.tv_sec + ((float)duration.duration.tv_usec / 1000000.0)));
 592
 593         free(duration_text);
 594         free(failed);
 595
 596         image_close(&image);
 597
 598         return ERROR_OK;
 599 }
 600
 601 int handle_flash_write_binary_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
 602 {
 603         u32 offset;
 604         u8 *buffer;
 605         u32 buf_cnt;
 606
 607         fileio_t fileio;
 608
 609         duration_t duration;
 610         char *duration_text;
 611
 612         int retval;
 613         flash_bank_t *p;
 614
 615         if (argc < 3)
 616         {
 617                 command_print(cmd_ctx, "usage: flash write <bank> <file> <offset>");
 618                 return ERROR_OK;
 619         }
 620
 621         duration_start_measure(&duration);
 622
 623         offset = strtoul(args[2], NULL, 0);
 624         p = get_flash_bank_by_num(strtoul(args[0], NULL, 0));
 625         if (!p)
 626         {
 627                 command_print(cmd_ctx, "flash bank '#%s' is out of bounds", args[0]);
 628                 return ERROR_OK;
 629         }
 630
 631         if (fileio_open(&fileio, args[1], FILEIO_READ, FILEIO_BINARY) != ERROR_OK)
 632         {
 633                 command_print(cmd_ctx, "flash write error: %s", fileio.error_str);
 634                 return ERROR_OK;
 635         }
 636
 637         buffer = malloc(fileio.size);
 638         if (fileio_read(&fileio, fileio.size, buffer, &buf_cnt) != ERROR_OK)
 639         {
 640                 command_print(cmd_ctx, "flash write error: %s", fileio.error_str);
 641                 return ERROR_OK;
 642         }
 643
 644         if ((retval = p->driver->write(p, buffer, offset, buf_cnt)) != ERROR_OK)
 645         {
 646                 command_print(cmd_ctx, "failed writing file %s to flash bank %i at offset 0x%8.8x",
 647                         args[1], strtoul(args[0], NULL, 0), strtoul(args[2], NULL, 0));
 648                 switch (retval)
 649                 {
 650                         case ERROR_TARGET_NOT_HALTED:
 651                                 command_print(cmd_ctx, "can't work with this flash while target is running");
 652                                 break;
 653                         case ERROR_INVALID_ARGUMENTS:
 654                                 command_print(cmd_ctx, "usage: flash write <bank> <file> <offset>");
 655                                 break;
 656                         case ERROR_FLASH_BANK_INVALID:
 657                                 command_print(cmd_ctx, "no '%s' flash found at 0x%8.8x", p->driver->name, p->base);
 658                                 break;
 659                         case ERROR_FLASH_OPERATION_FAILED:
 660                                 command_print(cmd_ctx, "flash program error");
 661                                 break;
 662                         case ERROR_FLASH_DST_BREAKS_ALIGNMENT:
 663                                 command_print(cmd_ctx, "offset breaks required alignment");
 664                                 break;
 665                         case ERROR_FLASH_DST_OUT_OF_BANK:
 666                                 command_print(cmd_ctx, "destination is out of flash bank (offset and/or file too large)");
 667                                 break;
 668                         case ERROR_FLASH_SECTOR_NOT_ERASED:
 669                                 command_print(cmd_ctx, "destination sector(s) not erased");
 670                                 break;
 671                         default:
 672                                 command_print(cmd_ctx, "unknown error");
 673                 }
 674         }
 675
 676         free(buffer);
 677
 678         duration_stop_measure(&duration, &duration_text);
 679         command_print(cmd_ctx, "wrote  %"PRIi64" byte from file %s to flash bank %i at offset 0x%8.8x in %s (%f kb/s)",
 680                 fileio.size, args[1], strtoul(args[0], NULL, 0), offset, duration_text,
 681                 (float)fileio.size / 1024.0 / ((float)duration.duration.tv_sec + ((float)duration.duration.tv_usec / 1000000.0)));
 682         free(duration_text);
 683
 684         fileio_close(&fileio);
 685
 686         return ERROR_OK;
 687 }
 688
 689 /* lookup flash bank by address */
 690 flash_bank_t *get_flash_bank_by_addr(target_t *target, u32 addr)
 691 {
 692         flash_bank_t *c;
 693
 694         /* cycle through bank list */
 695         for (c = flash_banks; c; c = c->next)
 696         {
 697                 /* check whether address belongs to this flash bank */
 698                 if ((addr >= c->base) && (addr < c->base + c->size) && target == c->target)
 699                         return c;
 700         }
 701
 702         return NULL;
 703 }
 704
 705 /* erase given flash region, selects proper bank according to target and address */
 706 int flash_erase(target_t *target, u32 addr, u32 length)
 707 {
 708         flash_bank_t *c;
 709         int first = -1;
 710         int last = -1;
 711         int i;
 712
 713         if ((c = get_flash_bank_by_addr(target, addr)) == NULL)
 714                 return ERROR_FLASH_DST_OUT_OF_BANK; /* no corresponding bank found */
 715
 716         if (c->size == 0 || c->num_sectors == 0)
 717                 return ERROR_FLASH_BANK_INVALID;
 718
 719         if (length == 0)
 720         {
 721                 /* special case, erase whole bank when length is zero */
 722                 if (addr != c->base)
 723                         return ERROR_FLASH_DST_BREAKS_ALIGNMENT;
 724
 725                 return c->driver->erase(c, 0, c->num_sectors - 1);
 726         }
 727
 728         /* check whether it fits */
 729         if (addr + length > c->base + c->size)
 730                 return ERROR_FLASH_DST_BREAKS_ALIGNMENT;
 731
 732         addr -= c->base;
 733
 734         for (i = 0; i < c->num_sectors; i++)
 735         {
 736                 /* check whether sector overlaps with the given range and is not yet erased */
 737                 if (addr < c->sectors[i].offset + c->sectors[i].size && addr + length > c->sectors[i].offset && c->sectors[i].is_erased != 1) {
 738                         /* if first is not set yet then this is the first sector */
 739                         if (first == -1)
 740                                 first = i;
 741                         last = i; /* and it is the last one so far in any case */
 742                 }
 743         }
 744
 745         if( first == -1 || last == -1 )
 746                 return ERROR_OK;
 747
 748         return c->driver->erase(c, first, last);
 749 }
 750
 751 /* write an image to flash memory of the given target */
 752 int flash_write(target_t *target, image_t *image, u32 *written, char **error_str, int *failed, int erase)
 753 {
 754         int retval;
 755         int i;
 756
 757         int section;
 758         u32 section_offset;
 759
 760         section = 0;
 761         section_offset = 0;
 762
 763         if (written)
 764                 *written = 0;
 765
 766         if (failed != NULL)
 767                 for (i = 0; i < image->num_sections; i++)
 768                         failed[i] = 0;
 769
 770         /* loop until we reach end of the image */
 771         while (section < image->num_sections)
 772         {
 773                 flash_bank_t *c;
 774                 u32 buffer_size;
 775                 u8 *buffer;
 776                 int section_first;
 777                 int section_last;
 778                 u32 run_address = image->sections[section].base_address+section_offset;
 779                 u32 run_size = image->sections[section].size-section_offset;
 780
 781                 if (image->sections[section].size ==  0)
 782                 {
 783                         WARNING("empty section %d", section);
 784                         section++;
 785                         section_offset = 0;
 786                         continue;
 787                 }
 788
 789                 /* find the corresponding flash bank */
 790                 if ((c = get_flash_bank_by_addr(target, run_address)) == NULL)
 791                 {
 792                         if (failed == NULL)
 793                         {
 794                                 if (error_str == NULL)
 795                                         return ERROR_FLASH_DST_OUT_OF_BANK; /* abort operation */
 796                                 *error_str = malloc(FLASH_MAX_ERROR_STR);
 797                                 snprintf(*error_str, FLASH_MAX_ERROR_STR, "no flash mapped at requested address");
 798                                 return ERROR_FLASH_DST_OUT_OF_BANK; /* abort operation */
 799                         }
 800                         failed[section] = ERROR_FLASH_DST_OUT_OF_BANK; /* mark the section as failed */
 801                         section++; /* and skip it */
 802                         section_offset = 0;
 803                         continue;
 804                 }
 805
 806                 /* collect consecutive sections which fall into the same bank */
 807                 section_first = section;
 808                 section_last = section;
 809                 while ((run_address + run_size < c->base + c->size)
 810                                 && (section_last + 1 < image->num_sections))
 811                 {
 812                         if (image->sections[section_last + 1].base_address < (run_address + run_size))
 813                         {
 814                                 WARNING("section %d out of order", section_last + 1);
 815                                 break;
 816                         }
 817                         if (image->sections[section_last + 1].base_address != (run_address + run_size))
 818                                 break;
 819                         run_size += image->sections[++section_last].size;
 820                 }
 821
 822                 /* fit the run into bank constraints */
 823                 if (run_address + run_size > c->base + c->size)
 824                         run_size = c->base + c->size - run_address;
 825
 826                 /* allocate buffer */
 827                 buffer = malloc(run_size);
 828                 buffer_size = 0;
 829
 830                 /* read sections to the buffer */
 831                 while (buffer_size < run_size)
 832                 {
 833                         u32 size_read;
 834
 835                         if (buffer_size - run_size <= image->sections[section].size - section_offset)
 836                                 size_read = buffer_size - run_size;
 837                         else
 838                                 size_read = image->sections[section].size - section_offset;
 839
 840                         if ((retval = image_read_section(image, section, section_offset,
 841                                         run_size, buffer + buffer_size, &size_read)) != ERROR_OK || size_read == 0)
 842                         {
 843                                 free(buffer);
 844
 845                                 if (error_str == NULL)
 846                                         return ERROR_IMAGE_TEMPORARILY_UNAVAILABLE;
 847
 848                                 *error_str = malloc(FLASH_MAX_ERROR_STR);
 849
 850                                 /* if image_read_section returned an error there's an error string we can pass on */
 851                                 if (retval != ERROR_OK)
 852                                         snprintf(*error_str, FLASH_MAX_ERROR_STR, "error reading from image: %s", image->error_str);
 853                                 else
 854                                         snprintf(*error_str, FLASH_MAX_ERROR_STR, "error reading from image");
 855
 856                                 return ERROR_IMAGE_TEMPORARILY_UNAVAILABLE;
 857                         }
 858
 859                         buffer_size += size_read;
 860                         section_offset += size_read;
 861
 862                         if (section_offset >= image->sections[section].size)
 863                         {
 864                                 section++;
 865                                 section_offset = 0;
 866                         }
 867                 }
 868
 869                 retval = ERROR_OK;
 870
 871                 if (erase)
 872                 {
 873                         /* calculate and erase sectors */
 874                         retval = flash_erase( target, run_address, run_size );
 875                 }
 876
 877                 if (retval == ERROR_OK)
 878                 {
 879                         /* write flash sectors */
 880                         retval = c->driver->write(c, buffer, run_address - c->base, run_size);
 881                 }
 882
 883                 free(buffer);
 884
 885                 if (retval != ERROR_OK)
 886                 {
 887                         if (error_str == NULL)
 888                                 return retval; /* abort operation */
 889
 890                         *error_str = malloc(FLASH_MAX_ERROR_STR);
 891                         switch (retval)
 892                         {
 893                                 case ERROR_TARGET_NOT_HALTED:
 894                                         snprintf(*error_str, FLASH_MAX_ERROR_STR, "can't flash image while target is running");
 895                                         break;
 896                                 case ERROR_INVALID_ARGUMENTS:
 897                                         snprintf(*error_str, FLASH_MAX_ERROR_STR, "flash driver can't fulfill request");
 898                                         break;
 899                                 case ERROR_FLASH_OPERATION_FAILED:
 900                                         snprintf(*error_str, FLASH_MAX_ERROR_STR, "flash program error");
 901                                         break;
 902                                 case ERROR_FLASH_DST_BREAKS_ALIGNMENT:
 903                                         snprintf(*error_str, FLASH_MAX_ERROR_STR, "offset breaks required alignment");
 904                                         break;
 905                                 case ERROR_FLASH_DST_OUT_OF_BANK:
 906                                         snprintf(*error_str, FLASH_MAX_ERROR_STR, "no flash mapped at requested address");
 907                                         break;
 908                                 case ERROR_FLASH_SECTOR_NOT_ERASED:
 909                                         snprintf(*error_str, FLASH_MAX_ERROR_STR, "destination sector(s) not erased");
 910                                         break;
 911                                 default:
 912                                         snprintf(*error_str, FLASH_MAX_ERROR_STR, "unknown error: %i", retval);
 913                         }
 914
 915                         return retval; /* abort operation */
 916                 }
 917
 918                 if (written != NULL)
 919                         *written += run_size; /* add run size to total written counter */
 920         }
 921
 922         return ERROR_OK;
 923 }
 924
 925 int handle_flash_auto_erase_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
 926 {
 927         if (argc != 1)
 928         {
 929                 command_print(cmd_ctx, "usage: flash auto_erase <on|off>");
 930                 return ERROR_OK;
 931         }
 932
 933         if (strcmp(args[0], "on") == 0)
 934                 auto_erase = 1;
 935         else if (strcmp(args[0], "off") == 0)
 936                 auto_erase = 0;
 937
 938         return ERROR_OK;
 939 }
 940