src/flash/flash.c

   1 /***************************************************************************
   2  *   Copyright (C) 2005 by Dominic Rath                                    *
   3  *   Dominic.Rath@gmx.de                                                   *
   4  *                                                                         *
   5  *   Copyright (C) 2007,2008 Øyvind Harboe                                 *
   6  *   oyvind.harboe@zylin.com                                               *
   7  *                                                                         *
   8  *   Copyright (C) 2008 by Spencer Oliver                                  *
   9  *   spen@spen-soft.co.uk                                                  *
  10  *                                                                         *
  11  *   This program is free software; you can redistribute it and/or modify  *
  12  *   it under the terms of the GNU General Public License as published by  *
  13  *   the Free Software Foundation; either version 2 of the License, or     *
  14  *   (at your option) any later version.                                   *
  15  *                                                                         *
  16  *   This program is distributed in the hope that it will be useful,       *
  17  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  18  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  19  *   GNU General Public License for more details.                          *
  20  *                                                                         *
  21  *   You should have received a copy of the GNU General Public License     *
  22  *   along with this program; if not, write to the                         *
  23  *   Free Software Foundation, Inc.,                                       *
  24  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
  25  ***************************************************************************/
  26 #ifdef HAVE_CONFIG_H
  27 #include "config.h"
  28 #endif
  29
  30 #include "flash.h"
  31 #include "image.h"
  32 #include "time_support.h"
  33 #include "at91sam3.h"
  34
  35 /* command handlers */
  36 static int handle_flash_bank_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  37 static int handle_flash_info_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  38 static int handle_flash_probe_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  39 static int handle_flash_erase_check_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  40 static int handle_flash_erase_address_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  41 static int handle_flash_protect_check_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  42 static int handle_flash_erase_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  43 static int handle_flash_write_bank_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  44 static int handle_flash_write_image_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  45 static int handle_flash_fill_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  46 static int handle_flash_protect_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  47
  48 /* flash drivers
  49  */
  50 extern flash_driver_t lpc2000_flash;
  51 extern flash_driver_t cfi_flash;
  52 extern flash_driver_t at91sam7_flash;
  53 extern flash_driver_t str7x_flash;
  54 extern flash_driver_t str9x_flash;
  55 extern flash_driver_t aduc702x_flash;
  56 extern flash_driver_t stellaris_flash;
  57 extern flash_driver_t str9xpec_flash;
  58 extern flash_driver_t stm32x_flash;
  59 extern flash_driver_t tms470_flash;
  60 extern flash_driver_t ecosflash_flash;
  61 extern flash_driver_t lpc288x_flash;
  62 extern flash_driver_t ocl_flash;
  63 extern flash_driver_t pic32mx_flash;
  64 extern flash_driver_t avr_flash;
  65
  66 flash_driver_t *flash_drivers[] = {
  67         &lpc2000_flash,
  68         &cfi_flash,
  69         &at91sam7_flash,
  70         &at91sam3_flash,
  71         &str7x_flash,
  72         &str9x_flash,
  73         &aduc702x_flash,
  74         &stellaris_flash,
  75         &str9xpec_flash,
  76         &stm32x_flash,
  77         &tms470_flash,
  78         &ecosflash_flash,
  79         &lpc288x_flash,
  80         &ocl_flash,
  81         &pic32mx_flash,
  82         &avr_flash,
  83         NULL,
  84 };
  85
  86 flash_bank_t *flash_banks;
  87 static  command_t *flash_cmd;
  88
  89 /* wafer thin wrapper for invoking the flash driver */
  90 static int flash_driver_write(struct flash_bank_s *bank, uint8_t *buffer, uint32_t offset, uint32_t count)
  91 {
  92         int retval;
  93
  94         retval = bank->driver->write(bank, buffer, offset, count);
  95         if (retval != ERROR_OK)
  96         {
  97                 LOG_ERROR("error writing to flash at address 0x%08" PRIx32 " at offset 0x%8.8" PRIx32 " (%d)",
  98                           bank->base, offset, retval);
  99         }
 100
 101         return retval;
 102 }
 103
 104 static int flash_driver_erase(struct flash_bank_s *bank, int first, int last)
 105 {
 106         int retval;
 107
 108         retval = bank->driver->erase(bank, first, last);
 109         if (retval != ERROR_OK)
 110         {
 111                 LOG_ERROR("failed erasing sectors %d to %d (%d)", first, last, retval);
 112         }
 113
 114         return retval;
 115 }
 116
 117 int flash_driver_protect(struct flash_bank_s *bank, int set, int first, int last)
 118 {
 119         int retval;
 120
 121         retval = bank->driver->protect(bank, set, first, last);
 122         if (retval != ERROR_OK)
 123         {
 124                 LOG_ERROR("failed setting protection for areas %d to %d (%d)", first, last, retval);
 125         }
 126
 127         return retval;
 128 }
 129
 130 int flash_register_commands(struct command_context_s *cmd_ctx)
 131 {
 132         flash_cmd = register_command(cmd_ctx, NULL, "flash", NULL, COMMAND_ANY, NULL);
 133
 134         register_command(cmd_ctx, flash_cmd, "bank", handle_flash_bank_command, COMMAND_CONFIG, "flash bank <driver> <base> <size> <chip_width> <bus_width> <target> [driver_options ...]");
 135         return ERROR_OK;
 136 }
 137
 138 static int jim_flash_banks(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
 139 {
 140         flash_bank_t *p;
 141
 142         if (argc != 1) {
 143                 Jim_WrongNumArgs(interp, 1, argv, "no arguments to flash_banks command");
 144                 return JIM_ERR;
 145         }
 146
 147         Jim_Obj *list = Jim_NewListObj(interp, NULL, 0);
 148         for (p = flash_banks; p; p = p->next)
 149         {
 150                 Jim_Obj *elem = Jim_NewListObj(interp, NULL, 0);
 151
 152                 Jim_ListAppendElement(interp, elem, Jim_NewStringObj(interp, "name", -1));
 153                 Jim_ListAppendElement(interp, elem, Jim_NewStringObj(interp, p->driver->name, -1));
 154                 Jim_ListAppendElement(interp, elem, Jim_NewStringObj(interp, "base", -1));
 155                 Jim_ListAppendElement(interp, elem, Jim_NewIntObj(interp, p->base));
 156                 Jim_ListAppendElement(interp, elem, Jim_NewStringObj(interp, "size", -1));
 157                 Jim_ListAppendElement(interp, elem, Jim_NewIntObj(interp, p->size));
 158                 Jim_ListAppendElement(interp, elem, Jim_NewStringObj(interp, "bus_width", -1));
 159                 Jim_ListAppendElement(interp, elem, Jim_NewIntObj(interp, p->bus_width));
 160                 Jim_ListAppendElement(interp, elem, Jim_NewStringObj(interp, "chip_width", -1));
 161                 Jim_ListAppendElement(interp, elem, Jim_NewIntObj(interp, p->chip_width));
 162
 163                 Jim_ListAppendElement(interp, list, elem);
 164         }
 165
 166         Jim_SetResult(interp, list);
 167
 168         return JIM_OK;
 169 }
 170
 171 int flash_init_drivers(struct command_context_s *cmd_ctx)
 172 {
 173         register_jim(cmd_ctx, "ocd_flash_banks", jim_flash_banks, "return information about the flash banks");
 174
 175         if (flash_banks)
 176         {
 177                 register_command(cmd_ctx, flash_cmd, "info", handle_flash_info_command, COMMAND_EXEC,
 178                                                  "print info about flash bank <num>");
 179                 register_command(cmd_ctx, flash_cmd, "probe", handle_flash_probe_command, COMMAND_EXEC,
 180                                                  "identify flash bank <num>");
 181                 register_command(cmd_ctx, flash_cmd, "erase_check", handle_flash_erase_check_command, COMMAND_EXEC,
 182                                                  "check erase state of sectors in flash bank <num>");
 183                 register_command(cmd_ctx, flash_cmd, "protect_check", handle_flash_protect_check_command, COMMAND_EXEC,
 184                                                  "check protection state of sectors in flash bank <num>");
 185                 register_command(cmd_ctx, flash_cmd, "erase_sector", handle_flash_erase_command, COMMAND_EXEC,
 186                                                  "erase sectors at <bank> <first> <last>");
 187                 register_command(cmd_ctx, flash_cmd, "erase_address", handle_flash_erase_address_command, COMMAND_EXEC,
 188                                                  "erase address range <address> <length>");
 189
 190                 register_command(cmd_ctx, flash_cmd, "fillw", handle_flash_fill_command, COMMAND_EXEC,
 191                                                  "fill with pattern (no autoerase) <address> <word_pattern> <count>");
 192                 register_command(cmd_ctx, flash_cmd, "fillh", handle_flash_fill_command, COMMAND_EXEC,
 193                                                  "fill with pattern <address> <halfword_pattern> <count>");
 194                 register_command(cmd_ctx, flash_cmd, "fillb", handle_flash_fill_command, COMMAND_EXEC,
 195                                                  "fill with pattern <address> <byte_pattern> <count>");
 196
 197                 register_command(cmd_ctx, flash_cmd, "write_bank", handle_flash_write_bank_command, COMMAND_EXEC,
 198                                                  "write binary data to <bank> <file> <offset>");
 199                 register_command(cmd_ctx, flash_cmd, "write_image", handle_flash_write_image_command, COMMAND_EXEC,
 200                                                  "write_image [erase] <file> [offset] [type]");
 201                 register_command(cmd_ctx, flash_cmd, "protect", handle_flash_protect_command, COMMAND_EXEC,
 202                                                  "set protection of sectors at <bank> <first> <last> <on | off>");
 203         }
 204
 205         return ERROR_OK;
 206 }
 207
 208 flash_bank_t *get_flash_bank_by_num_noprobe(int num)
 209 {
 210         flash_bank_t *p;
 211         int i = 0;
 212
 213         for (p = flash_banks; p; p = p->next)
 214         {
 215                 if (i++ == num)
 216                 {
 217                         return p;
 218                 }
 219         }
 220         LOG_ERROR("flash bank %d does not exist", num);
 221         return NULL;
 222 }
 223
 224 int flash_get_bank_count(void)
 225 {
 226         flash_bank_t *p;
 227         int i = 0;
 228         for (p = flash_banks; p; p = p->next)
 229         {
 230                 i++;
 231         }
 232         return i;
 233 }
 234
 235 flash_bank_t *get_flash_bank_by_num(int num)
 236 {
 237         flash_bank_t *p = get_flash_bank_by_num_noprobe(num);
 238         int retval;
 239
 240         if (p == NULL)
 241                 return NULL;
 242
 243         retval = p->driver->auto_probe(p);
 244
 245         if (retval != ERROR_OK)
 246         {
 247                 LOG_ERROR("auto_probe failed %d\n", retval);
 248                 return NULL;
 249         }
 250         return p;
 251 }
 252
 253 static int handle_flash_bank_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
 254 {
 255         int retval;
 256         int i;
 257         int found = 0;
 258         target_t *target;
 259
 260         if (argc < 6)
 261         {
 262                 return ERROR_COMMAND_SYNTAX_ERROR;
 263         }
 264
 265         if ((target = get_target(args[5])) == NULL)
 266         {
 267                 LOG_ERROR("target '%s' not defined", args[5]);
 268                 return ERROR_FAIL;
 269         }
 270
 271         for (i = 0; flash_drivers[i]; i++)
 272         {
 273                 if (strcmp(args[0], flash_drivers[i]->name) == 0)
 274                 {
 275                         flash_bank_t *p, *c;
 276
 277                         /* register flash specific commands */
 278                         if (flash_drivers[i]->register_commands(cmd_ctx) != ERROR_OK)
 279                         {
 280                                 LOG_ERROR("couldn't register '%s' commands", args[0]);
 281                                 return ERROR_FAIL;
 282                         }
 283
 284                         c = malloc(sizeof(flash_bank_t));
 285                         c->target = target;
 286                         c->driver = flash_drivers[i];
 287                         c->driver_priv = NULL;
 288                         c->base = strtoul(args[1], NULL, 0);
 289                         c->size = strtoul(args[2], NULL, 0);
 290                         c->chip_width = strtoul(args[3], NULL, 0);
 291                         c->bus_width = strtoul(args[4], NULL, 0);
 292                         c->num_sectors = 0;
 293                         c->sectors = NULL;
 294                         c->next = NULL;
 295
 296                         if ((retval = flash_drivers[i]->flash_bank_command(cmd_ctx, cmd, args, argc, c)) != ERROR_OK)
 297                         {
 298                                 LOG_ERROR("'%s' driver rejected flash bank at 0x%8.8" PRIx32 , args[0], c->base);
 299                                 free(c);
 300                                 return retval;
 301                         }
 302
 303                         /* put flash bank in linked list */
 304                         if (flash_banks)
 305                         {
 306                                 int     bank_num = 0;
 307                                 /* find last flash bank */
 308                                 for (p = flash_banks; p && p->next; p = p->next) bank_num++;
 309                                 if (p)
 310                                         p->next = c;
 311                                 c->bank_number = bank_num + 1;
 312                         }
 313                         else
 314                         {
 315                                 flash_banks = c;
 316                                 c->bank_number = 0;
 317                         }
 318
 319                         found = 1;
 320                 }
 321         }
 322
 323         /* no matching flash driver found */
 324         if (!found)
 325         {
 326                 LOG_ERROR("flash driver '%s' not found", args[0]);
 327                 return ERROR_FAIL;
 328         }
 329
 330         return ERROR_OK;
 331 }
 332
 333 static int handle_flash_info_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
 334 {
 335         flash_bank_t *p;
 336         uint32_t i = 0;
 337         int j = 0;
 338         int retval;
 339
 340         if (argc != 1)
 341         {
 342                 return ERROR_COMMAND_SYNTAX_ERROR;
 343         }
 344
 345         for (p = flash_banks; p; p = p->next, i++)
 346         {
 347                 if (i == strtoul(args[0], NULL, 0))
 348                 {
 349                         char buf[1024];
 350
 351                         /* attempt auto probe */
 352                         if ((retval = p->driver->auto_probe(p)) != ERROR_OK)
 353                                 return retval;
 354
 355                         command_print(cmd_ctx,
 356                                       "#%" PRIi32 " : %s at 0x%8.8" PRIx32 ", size 0x%8.8" PRIx32 ", buswidth %i, chipwidth %i",
 357                                       i,
 358                                       p->driver->name,
 359                                       p->base,
 360                                       p->size,
 361                                       p->bus_width,
 362                                       p->chip_width);
 363                         for (j = 0; j < p->num_sectors; j++)
 364                         {
 365                                 char *protect_state;
 366
 367                                 if (p->sectors[j].is_protected == 0)
 368                                         protect_state = "not protected";
 369                                 else if (p->sectors[j].is_protected == 1)
 370                                         protect_state = "protected";
 371                                 else
 372                                         protect_state = "protection state unknown";
 373
 374                                 command_print(cmd_ctx,
 375                                               "\t#%3i: 0x%8.8" PRIx32 " (0x%" PRIx32 " %" PRIi32 "kB) %s",
 376                                               j,
 377                                               p->sectors[j].offset,
 378                                               p->sectors[j].size,
 379                                               p->sectors[j].size >> 10,
 380                                               protect_state);
 381                         }
 382
 383                         *buf = '\0'; /* initialize buffer, otherwise it migh contain garbage if driver function fails */
 384                         retval = p->driver->info(p, buf, sizeof(buf));
 385                         command_print(cmd_ctx, "%s", buf);
 386                         if (retval != ERROR_OK)
 387                                 LOG_ERROR("error retrieving flash info (%d)", retval);
 388                 }
 389         }
 390
 391         return ERROR_OK;
 392 }
 393
 394 static int handle_flash_probe_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
 395 {
 396         flash_bank_t *p;
 397         int retval;
 398
 399         if (argc != 1)
 400         {
 401                 return ERROR_COMMAND_SYNTAX_ERROR;
 402         }
 403
 404         p = get_flash_bank_by_num_noprobe(strtoul(args[0], NULL, 0));
 405         if (p)
 406         {
 407                 if ((retval = p->driver->probe(p)) == ERROR_OK)
 408                 {
 409                         command_print(cmd_ctx, "flash '%s' found at 0x%8.8" PRIx32, p->driver->name, p->base);
 410                 }
 411                 else if (retval == ERROR_FLASH_BANK_INVALID)
 412                 {
 413                         command_print(cmd_ctx, "probing failed for flash bank '#%s' at 0x%8.8" PRIx32,
 414                                                   args[0], p->base);
 415                 }
 416                 else
 417                 {
 418                         command_print(cmd_ctx, "unknown error when probing flash bank '#%s' at 0x%8.8" PRIx32,
 419                                                   args[0], p->base);
 420                 }
 421         }
 422         else
 423         {
 424                 command_print(cmd_ctx, "flash bank '#%s' is out of bounds", args[0]);
 425         }
 426
 427         return ERROR_OK;
 428 }
 429
 430 static int handle_flash_erase_check_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
 431 {
 432         flash_bank_t *p;
 433         int retval;
 434
 435         if (argc != 1)
 436         {
 437                 return ERROR_COMMAND_SYNTAX_ERROR;
 438         }
 439
 440         p = get_flash_bank_by_num(strtoul(args[0], NULL, 0));
 441         if (p)
 442         {
 443                 int j;
 444                 if ((retval = p->driver->erase_check(p)) == ERROR_OK)
 445                 {
 446                         command_print(cmd_ctx, "successfully checked erase state");
 447                 }
 448                 else
 449                 {
 450                         command_print(cmd_ctx, "unknown error when checking erase state of flash bank #%s at 0x%8.8" PRIx32,
 451                                 args[0], p->base);
 452                 }
 453
 454                 for (j = 0; j < p->num_sectors; j++)
 455                 {
 456                         char *erase_state;
 457
 458                         if (p->sectors[j].is_erased == 0)
 459                                 erase_state = "not erased";
 460                         else if (p->sectors[j].is_erased == 1)
 461                                 erase_state = "erased";
 462                         else
 463                                 erase_state = "erase state unknown";
 464
 465                         command_print(cmd_ctx,
 466                                       "\t#%3i: 0x%8.8" PRIx32 " (0x%" PRIx32 " %" PRIi32 "kB) %s",
 467                                       j,
 468                                       p->sectors[j].offset,
 469                                       p->sectors[j].size,
 470                                       p->sectors[j].size >> 10,
 471                                       erase_state);
 472                 }
 473         }
 474
 475         return ERROR_OK;
 476 }
 477
 478 static int handle_flash_erase_address_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
 479 {
 480         flash_bank_t *p;
 481         int retval;
 482         int address;
 483         int length;
 484         duration_t duration;
 485         char *duration_text;
 486
 487         target_t *target = get_current_target(cmd_ctx);
 488
 489         if (argc != 2)
 490         {
 491                 return ERROR_COMMAND_SYNTAX_ERROR;
 492         }
 493
 494         address = strtoul(args[0], NULL, 0);
 495         length = strtoul(args[1], NULL, 0);
 496         if (length <= 0)
 497         {
 498                 command_print(cmd_ctx, "Length must be >0");
 499                 return ERROR_COMMAND_SYNTAX_ERROR;
 500         }
 501
 502         p = get_flash_bank_by_addr(target, address);
 503         if (p == NULL)
 504         {
 505                 return ERROR_FAIL;
 506         }
 507
 508         /* We can't know if we did a resume + halt, in which case we no longer know the erased state */
 509         flash_set_dirty();
 510
 511         duration_start_measure(&duration);
 512
 513         if ((retval = flash_erase_address_range(target, address, length)) == ERROR_OK)
 514         {
 515                 if ((retval = duration_stop_measure(&duration, &duration_text)) != ERROR_OK)
 516                 {
 517                         return retval;
 518                 }
 519                 command_print(cmd_ctx, "erased address 0x%8.8x length %i in %s", address, length, duration_text);
 520                 free(duration_text);
 521         }
 522
 523         return retval;
 524 }
 525
 526 static int handle_flash_protect_check_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
 527 {
 528         flash_bank_t *p;
 529         int retval;
 530
 531         if (argc != 1)
 532         {
 533                 return ERROR_COMMAND_SYNTAX_ERROR;
 534         }
 535
 536         p = get_flash_bank_by_num(strtoul(args[0], NULL, 0));
 537         if (p)
 538         {
 539                 if ((retval = p->driver->protect_check(p)) == ERROR_OK)
 540                 {
 541                         command_print(cmd_ctx, "successfully checked protect state");
 542                 }
 543                 else if (retval == ERROR_FLASH_OPERATION_FAILED)
 544                 {
 545                         command_print(cmd_ctx, "checking protection state failed (possibly unsupported) by flash #%s at 0x%8.8" PRIx32, args[0], p->base);
 546                 }
 547                 else
 548                 {
 549                         command_print(cmd_ctx, "unknown error when checking protection state of flash bank '#%s' at 0x%8.8" PRIx32, args[0], p->base);
 550                 }
 551         }
 552         else
 553         {
 554                 return ERROR_COMMAND_SYNTAX_ERROR;
 555         }
 556
 557         return ERROR_OK;
 558 }
 559
 560 static int handle_flash_erase_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
 561 {
 562         if (argc > 2)
 563         {
 564                 int first = strtoul(args[1], NULL, 0);
 565                 int last = strtoul(args[2], NULL, 0);
 566                 int retval;
 567                 flash_bank_t *p = get_flash_bank_by_num(strtoul(args[0], NULL, 0));
 568                 duration_t duration;
 569                 char *duration_text;
 570
 571                 duration_start_measure(&duration);
 572
 573                 if (!p)
 574                 {
 575                         return ERROR_COMMAND_SYNTAX_ERROR;
 576                 }
 577
 578                 if ((retval = flash_driver_erase(p, first, last)) == ERROR_OK)
 579                 {
 580                         if ((retval = duration_stop_measure(&duration, &duration_text)) != ERROR_OK)
 581                         {
 582                                 return retval;
 583                         }
 584
 585                         command_print(cmd_ctx, "erased sectors %i through %i on flash bank %li in %s",
 586                                 first, last, strtoul(args[0], 0, 0), duration_text);
 587                         free(duration_text);
 588                 }
 589         }
 590         else
 591         {
 592                 return ERROR_COMMAND_SYNTAX_ERROR;
 593         }
 594
 595         return ERROR_OK;
 596 }
 597
 598 static int handle_flash_protect_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
 599 {
 600         if (argc > 3)
 601         {
 602                 int first = strtoul(args[1], NULL, 0);
 603                 int last = strtoul(args[2], NULL, 0);
 604                 int set;
 605                 int retval;
 606                 flash_bank_t *p = get_flash_bank_by_num(strtoul(args[0], NULL, 0));
 607                 if (!p)
 608                 {
 609                         command_print(cmd_ctx, "flash bank '#%s' is out of bounds", args[0]);
 610                         return ERROR_OK;
 611                 }
 612
 613                 if (strcmp(args[3], "on") == 0)
 614                         set = 1;
 615                 else if (strcmp(args[3], "off") == 0)
 616                         set = 0;
 617                 else
 618                 {
 619                         return ERROR_COMMAND_SYNTAX_ERROR;
 620                 }
 621
 622                 retval = flash_driver_protect(p, set, first, last);
 623                 if (retval == ERROR_OK)
 624                 {
 625                         command_print(cmd_ctx, "%s protection for sectors %i through %i on flash bank %li",
 626                                 (set) ? "set" : "cleared", first,
 627                                 last, strtoul(args[0], 0, 0));
 628                 }
 629         }
 630         else
 631         {
 632                 return ERROR_COMMAND_SYNTAX_ERROR;
 633
 634         }
 635
 636         return ERROR_OK;
 637 }
 638
 639 static int handle_flash_write_image_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
 640 {
 641         target_t *target = get_current_target(cmd_ctx);
 642
 643         image_t image;
 644         uint32_t written;
 645
 646         duration_t duration;
 647         char *duration_text;
 648
 649         int retval, retvaltemp;
 650
 651         if (argc < 1)
 652         {
 653                 return ERROR_COMMAND_SYNTAX_ERROR;
 654         }
 655
 656         /* flash auto-erase is disabled by default*/
 657         int auto_erase = 0;
 658
 659         if (strcmp(args[0], "erase") == 0)
 660         {
 661                 auto_erase = 1;
 662                 args++;
 663                 argc--;
 664                 command_print(cmd_ctx, "auto erase enabled");
 665         }
 666
 667         if (argc < 1)
 668         {
 669                 return ERROR_COMMAND_SYNTAX_ERROR;
 670         }
 671
 672         if (!target)
 673         {
 674                 LOG_ERROR("no target selected");
 675                 return ERROR_FAIL;
 676         }
 677
 678         duration_start_measure(&duration);
 679
 680         if (argc >= 2)
 681         {
 682                 image.base_address_set = 1;
 683                 image.base_address = strtoul(args[1], NULL, 0);
 684         }
 685         else
 686         {
 687                 image.base_address_set = 0;
 688                 image.base_address = 0x0;
 689         }
 690
 691         image.start_address_set = 0;
 692
 693         retval = image_open(&image, args[0], (argc == 3) ? args[2] : NULL);
 694         if (retval != ERROR_OK)
 695         {
 696                 return retval;
 697         }
 698
 699         retval = flash_write(target, &image, &written, auto_erase);
 700         if (retval != ERROR_OK)
 701         {
 702                 image_close(&image);
 703                 return retval;
 704         }
 705
 706         if ((retvaltemp = duration_stop_measure(&duration, &duration_text)) != ERROR_OK)
 707         {
 708                 image_close(&image);
 709                 return retvaltemp;
 710         }
 711         if (retval == ERROR_OK)
 712         {
 713                 command_print(cmd_ctx,
 714                                           "wrote %" PRIu32 " byte from file %s in %s (%f kb/s)",
 715                                           written,
 716                                           args[0],
 717                                           duration_text,
 718                                           (float)written / 1024.0 / ((float)duration.duration.tv_sec + ((float)duration.duration.tv_usec / 1000000.0)));
 719         }
 720         free(duration_text);
 721
 722         image_close(&image);
 723
 724         return retval;
 725 }
 726
 727 static int handle_flash_fill_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
 728 {
 729         int err = ERROR_OK, retval;
 730         uint32_t address;
 731         uint32_t pattern;
 732         uint32_t count;
 733         uint8_t chunk[1024];
 734         uint8_t readback[1024];
 735         uint32_t wrote = 0;
 736         uint32_t cur_size = 0;
 737         uint32_t chunk_count;
 738         char *duration_text;
 739         duration_t duration;
 740         target_t *target = get_current_target(cmd_ctx);
 741         uint32_t i;
 742         uint32_t wordsize;
 743
 744         if (argc != 3)
 745         {
 746                 return ERROR_COMMAND_SYNTAX_ERROR;
 747         }
 748
 749         address = strtoul(args[0], NULL, 0);
 750         pattern = strtoul(args[1], NULL, 0);
 751         count   = strtoul(args[2], NULL, 0);
 752
 753         if (count == 0)
 754                 return ERROR_OK;
 755
 756         switch (cmd[4])
 757         {
 758         case 'w':
 759                 wordsize = 4;
 760                 break;
 761         case 'h':
 762                 wordsize = 2;
 763                 break;
 764         case 'b':
 765                 wordsize = 1;
 766                 break;
 767         default:
 768                 return ERROR_COMMAND_SYNTAX_ERROR;
 769         }
 770
 771         chunk_count = MIN(count, (1024 / wordsize));
 772         switch (wordsize)
 773         {
 774         case 4:
 775                 for (i = 0; i < chunk_count; i++)
 776                 {
 777                         target_buffer_set_u32(target, chunk + i * wordsize, pattern);
 778                 }
 779                 break;
 780         case 2:
 781                 for (i = 0; i < chunk_count; i++)
 782                 {
 783                         target_buffer_set_u16(target, chunk + i * wordsize, pattern);
 784                 }
 785                 break;
 786         case 1:
 787                 memset(chunk, pattern, chunk_count);
 788                 break;
 789         default:
 790                 LOG_ERROR("BUG: can't happen");
 791                 exit(-1);
 792         }
 793
 794         duration_start_measure(&duration);
 795
 796         for (wrote = 0; wrote < (count*wordsize); wrote += cur_size)
 797         {
 798                 cur_size = MIN((count*wordsize - wrote), sizeof(chunk));
 799                 flash_bank_t *bank;
 800                 bank = get_flash_bank_by_addr(target, address);
 801                 if (bank == NULL)
 802                 {
 803                         return ERROR_FAIL;
 804                 }
 805                 err = flash_driver_write(bank, chunk, address - bank->base + wrote, cur_size);
 806                 if (err != ERROR_OK)
 807                         return err;
 808
 809                 err = target_read_buffer(target, address + wrote, cur_size, readback);
 810                 if (err != ERROR_OK)
 811                         return err;
 812
 813                 unsigned i;
 814                 for (i = 0; i < cur_size; i++)
 815                 {
 816                         if (readback[i]!=chunk[i])
 817                         {
 818                                 LOG_ERROR("Verfication error address 0x%08" PRIx32 ", read back 0x%02x, expected 0x%02x",
 819                                                   address + wrote + i, readback[i], chunk[i]);
 820                                 return ERROR_FAIL;
 821                         }
 822                 }
 823
 824         }
 825
 826         if ((retval = duration_stop_measure(&duration, &duration_text)) != ERROR_OK)
 827         {
 828                 return retval;
 829         }
 830
 831         if (err == ERROR_OK)
 832         {
 833                 float speed;
 834                 speed = wrote / 1024.0;
 835                 speed/=((float)duration.duration.tv_sec + ((float)duration.duration.tv_usec / 1000000.0));
 836                 command_print(cmd_ctx,
 837                                           "wrote %" PRId32 " bytes to 0x%8.8" PRIx32 " in %s (%f kb/s)",
 838                                           count*wordsize,
 839                                           address,
 840                                           duration_text,
 841                                           speed);
 842         }
 843         free(duration_text);
 844         return ERROR_OK;
 845 }
 846
 847 static int handle_flash_write_bank_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
 848 {
 849         uint32_t offset;
 850         uint8_t *buffer;
 851         uint32_t buf_cnt;
 852
 853         fileio_t fileio;
 854
 855         duration_t duration;
 856         char *duration_text;
 857
 858         int retval, retvaltemp;
 859         flash_bank_t *p;
 860
 861         if (argc != 3)
 862         {
 863                 return ERROR_COMMAND_SYNTAX_ERROR;
 864         }
 865
 866         duration_start_measure(&duration);
 867
 868         offset = strtoul(args[2], NULL, 0);
 869         p = get_flash_bank_by_num(strtoul(args[0], NULL, 0));
 870         if (!p)
 871         {
 872                 command_print(cmd_ctx, "flash bank '#%s' is out of bounds", args[0]);
 873                 return ERROR_OK;
 874         }
 875
 876         if (fileio_open(&fileio, args[1], FILEIO_READ, FILEIO_BINARY) != ERROR_OK)
 877         {
 878                 return ERROR_OK;
 879         }
 880
 881         buffer = malloc(fileio.size);
 882         if (fileio_read(&fileio, fileio.size, buffer, &buf_cnt) != ERROR_OK)
 883         {
 884                 free(buffer);
 885                 fileio_close(&fileio);
 886                 return ERROR_OK;
 887         }
 888
 889         retval = flash_driver_write(p, buffer, offset, buf_cnt);
 890
 891         free(buffer);
 892         buffer = NULL;
 893
 894         if ((retvaltemp = duration_stop_measure(&duration, &duration_text)) != ERROR_OK)
 895         {
 896                 fileio_close(&fileio);
 897                 return retvaltemp;
 898         }
 899         if (retval == ERROR_OK)
 900         {
 901         command_print(cmd_ctx,
 902                                   "wrote  %lld byte from file %s to flash bank %li at offset 0x%8.8" PRIx32 " in %s (%f kb/s)",
 903                                   fileio.size,
 904                                   args[1],
 905                                   strtoul(args[0], NULL, 0),
 906                                   offset,
 907                                   duration_text,
 908                                   (float)fileio.size / 1024.0 / ((float)duration.duration.tv_sec + ((float)duration.duration.tv_usec / 1000000.0)));
 909         }
 910         free(duration_text);
 911
 912         fileio_close(&fileio);
 913
 914         return retval;
 915 }
 916
 917 void flash_set_dirty(void)
 918 {
 919         flash_bank_t *c;
 920         int i;
 921
 922         /* set all flash to require erasing */
 923         for (c = flash_banks; c; c = c->next)
 924         {
 925                 for (i = 0; i < c->num_sectors; i++)
 926                 {
 927                         c->sectors[i].is_erased = 0;
 928                 }
 929         }
 930 }
 931
 932 /* lookup flash bank by address */
 933 flash_bank_t *get_flash_bank_by_addr(target_t *target, uint32_t addr)
 934 {
 935         flash_bank_t *c;
 936
 937         /* cycle through bank list */
 938         for (c = flash_banks; c; c = c->next)
 939         {
 940                 int retval;
 941                 retval = c->driver->auto_probe(c);
 942
 943                 if (retval != ERROR_OK)
 944                 {
 945                         LOG_ERROR("auto_probe failed %d\n", retval);
 946                         return NULL;
 947                 }
 948                 /* check whether address belongs to this flash bank */
 949                 if ((addr >= c->base) && (addr <= c->base + (c->size - 1)) && target == c->target)
 950                         return c;
 951         }
 952         LOG_ERROR("No flash at address 0x%08" PRIx32 "\n", addr);
 953         return NULL;
 954 }
 955
 956 /* erase given flash region, selects proper bank according to target and address */
 957 int flash_erase_address_range(target_t *target, uint32_t addr, uint32_t length)
 958 {
 959         flash_bank_t *c;
 960         int first = -1;
 961         int last = -1;
 962         int i;
 963
 964         if ((c = get_flash_bank_by_addr(target, addr)) == NULL)
 965                 return ERROR_FLASH_DST_OUT_OF_BANK; /* no corresponding bank found */
 966
 967         if (c->size == 0 || c->num_sectors == 0)
 968         {
 969                 LOG_ERROR("Bank is invalid");
 970                 return ERROR_FLASH_BANK_INVALID;
 971         }
 972
 973         if (length == 0)
 974         {
 975                 /* special case, erase whole bank when length is zero */
 976                 if (addr != c->base)
 977                         return ERROR_FLASH_DST_BREAKS_ALIGNMENT;
 978
 979                 return flash_driver_erase(c, 0, c->num_sectors - 1);
 980         }
 981
 982         /* check whether it fits */
 983         if (addr + length - 1 > c->base + c->size - 1)
 984                 return ERROR_FLASH_DST_BREAKS_ALIGNMENT;
 985
 986         addr -= c->base;
 987
 988         for (i = 0; i < c->num_sectors; i++)
 989         {
 990                 /* check whether sector overlaps with the given range and is not yet erased */
 991                 if (addr < c->sectors[i].offset + c->sectors[i].size && addr + length > c->sectors[i].offset && c->sectors[i].is_erased != 1) {
 992                         /* if first is not set yet then this is the first sector */
 993                         if (first == -1)
 994                                 first = i;
 995                         last = i; /* and it is the last one so far in any case */
 996                 }
 997         }
 998
 999         if (first == -1 || last == -1)
1000                 return ERROR_OK;
1001
1002         return flash_driver_erase(c, first, last);
1003 }
1004
1005 /* write (optional verify) an image to flash memory of the given target */
1006 int flash_write(target_t *target, image_t *image, uint32_t *written, int erase)
1007 {
1008         int retval = ERROR_OK;
1009
1010         int section;
1011         uint32_t section_offset;
1012         flash_bank_t *c;
1013         int *padding;
1014
1015         section = 0;
1016         section_offset = 0;
1017
1018         if (written)
1019                 *written = 0;
1020
1021         if (erase)
1022         {
1023                 /* assume all sectors need erasing - stops any problems
1024                  * when flash_write is called multiple times */
1025
1026                 flash_set_dirty();
1027         }
1028
1029         /* allocate padding array */
1030         padding = malloc(image->num_sections * sizeof(padding));
1031
1032         /* loop until we reach end of the image */
1033         while (section < image->num_sections)
1034         {
1035                 uint32_t buffer_size;
1036                 uint8_t *buffer;
1037                 int section_first;
1038                 int section_last;
1039                 uint32_t run_address = image->sections[section].base_address + section_offset;
1040                 uint32_t run_size = image->sections[section].size - section_offset;
1041                 int pad_bytes = 0;
1042
1043                 if (image->sections[section].size ==  0)
1044                 {
1045                         LOG_WARNING("empty section %d", section);
1046                         section++;
1047                         section_offset = 0;
1048                         continue;
1049                 }
1050
1051                 /* find the corresponding flash bank */
1052                 if ((c = get_flash_bank_by_addr(target, run_address)) == NULL)
1053                 {
1054                         section++; /* and skip it */
1055                         section_offset = 0;
1056                         continue;
1057                 }
1058
1059                 /* collect consecutive sections which fall into the same bank */
1060                 section_first = section;
1061                 section_last = section;
1062                 padding[section] = 0;
1063                 while ((run_address + run_size - 1 < c->base + c->size - 1)
1064                                 && (section_last + 1 < image->num_sections))
1065                 {
1066                         if (image->sections[section_last + 1].base_address < (run_address + run_size))
1067                         {
1068                                 LOG_DEBUG("section %d out of order(very slightly surprising, but supported)", section_last + 1);
1069                                 break;
1070                         }
1071                         /* if we have multiple sections within our image, flash programming could fail due to alignment issues
1072                          * attempt to rebuild a consecutive buffer for the flash loader */
1073                         pad_bytes = (image->sections[section_last + 1].base_address) - (run_address + run_size);
1074                         if ((run_address + run_size + pad_bytes) > (c->base + c->size))
1075                                 break;
1076                         padding[section_last] = pad_bytes;
1077                         run_size += image->sections[++section_last].size;
1078                         run_size += pad_bytes;
1079                         padding[section_last] = 0;
1080
1081                         LOG_INFO("Padding image section %d with %d bytes", section_last-1, pad_bytes);
1082                 }
1083
1084                 /* fit the run into bank constraints */
1085                 if (run_address + run_size - 1 > c->base + c->size - 1)
1086                 {
1087                         LOG_WARNING("writing %d bytes only - as image section is %d bytes and bank is only %d bytes", \
1088                                     (int)(c->base + c->size - run_address), (int)(run_size), (int)(c->size));
1089                         run_size = c->base + c->size - run_address;
1090                 }
1091
1092                 /* allocate buffer */
1093                 buffer = malloc(run_size);
1094                 buffer_size = 0;
1095
1096                 /* read sections to the buffer */
1097                 while (buffer_size < run_size)
1098                 {
1099                         uint32_t size_read;
1100
1101                         size_read = run_size - buffer_size;
1102                         if (size_read > image->sections[section].size - section_offset)
1103                             size_read = image->sections[section].size - section_offset;
1104
1105                         if ((retval = image_read_section(image, section, section_offset,
1106                                         size_read, buffer + buffer_size, &size_read)) != ERROR_OK || size_read == 0)
1107                         {
1108                                 free(buffer);
1109                                 free(padding);
1110                                 return retval;
1111                         }
1112
1113                         /* see if we need to pad the section */
1114                         while (padding[section]--)
1115                                  (buffer + buffer_size)[size_read++] = 0xff;
1116
1117                         buffer_size += size_read;
1118                         section_offset += size_read;
1119
1120                         if (section_offset >= image->sections[section].size)
1121                         {
1122                                 section++;
1123                                 section_offset = 0;
1124                         }
1125                 }
1126
1127                 retval = ERROR_OK;
1128
1129                 if (erase)
1130                 {
1131                         /* calculate and erase sectors */
1132                         retval = flash_erase_address_range(target, run_address, run_size);
1133                 }
1134
1135                 if (retval == ERROR_OK)
1136                 {
1137                         /* write flash sectors */
1138                         retval = flash_driver_write(c, buffer, run_address - c->base, run_size);
1139                 }
1140
1141                 free(buffer);
1142
1143                 if (retval != ERROR_OK)
1144                 {
1145                         free(padding);
1146                         return retval; /* abort operation */
1147                 }
1148
1149                 if (written != NULL)
1150                         *written += run_size; /* add run size to total written counter */
1151         }
1152
1153         free(padding);
1154
1155         return retval;
1156 }
1157
1158 int default_flash_mem_blank_check(struct flash_bank_s *bank)
1159 {
1160         target_t *target = bank->target;
1161         uint8_t buffer[1024];
1162         int buffer_size = sizeof(buffer);
1163         int i;
1164         uint32_t nBytes;
1165
1166         if (bank->target->state != TARGET_HALTED)
1167         {
1168                 LOG_ERROR("Target not halted");
1169                 return ERROR_TARGET_NOT_HALTED;
1170         }
1171
1172         for (i = 0; i < bank->num_sectors; i++)
1173         {
1174                 uint32_t j;
1175                 bank->sectors[i].is_erased = 1;
1176
1177                 for (j = 0; j < bank->sectors[i].size; j += buffer_size)
1178                 {
1179                         uint32_t chunk;
1180                         int retval;
1181                         chunk = buffer_size;
1182                         if (chunk > (j - bank->sectors[i].size))
1183                         {
1184                                 chunk = (j - bank->sectors[i].size);
1185                         }
1186
1187                         retval = target_read_memory(target, bank->base + bank->sectors[i].offset + j, 4, chunk/4, buffer);
1188                         if (retval != ERROR_OK)
1189                                 return retval;
1190
1191                         for (nBytes = 0; nBytes < chunk; nBytes++)
1192                         {
1193                                 if (buffer[nBytes] != 0xFF)
1194                                 {
1195                                         bank->sectors[i].is_erased = 0;
1196                                         break;
1197                                 }
1198                         }
1199                 }
1200         }
1201
1202         return ERROR_OK;
1203 }
1204
1205 int default_flash_blank_check(struct flash_bank_s *bank)
1206 {
1207         target_t *target = bank->target;
1208         int i;
1209         int retval;
1210         int fast_check = 0;
1211         uint32_t blank;
1212
1213         if (bank->target->state != TARGET_HALTED)
1214         {
1215                 LOG_ERROR("Target not halted");
1216                 return ERROR_TARGET_NOT_HALTED;
1217         }
1218
1219         for (i = 0; i < bank->num_sectors; i++)
1220         {
1221                 uint32_t address = bank->base + bank->sectors[i].offset;
1222                 uint32_t size = bank->sectors[i].size;
1223
1224                 if ((retval = target_blank_check_memory(target, address, size, &blank)) != ERROR_OK)
1225                 {
1226                         fast_check = 0;
1227                         break;
1228                 }
1229                 if (blank == 0xFF)
1230                         bank->sectors[i].is_erased = 1;
1231                 else
1232                         bank->sectors[i].is_erased = 0;
1233                 fast_check = 1;
1234         }
1235
1236         if (!fast_check)
1237         {
1238                 LOG_USER("Running slow fallback erase check - add working memory");
1239                 return default_flash_mem_blank_check(bank);
1240         }
1241
1242         return ERROR_OK;
1243 }