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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 "replacements.h"
  25 #include "target.h"
  26 #include "target_request.h"
  27
  28 #include "log.h"
  29 #include "configuration.h"
  30 #include "binarybuffer.h"
  31 #include "jtag.h"
  32
  33 #include <string.h>
  34 #include <stdlib.h>
  35 #include <inttypes.h>
  36
  37 #include <sys/types.h>
  38 #include <sys/stat.h>
  39 #include <unistd.h>
  40 #include <errno.h>
  41
  42 #include <sys/time.h>
  43 #include <time.h>
  44
  45 #include <time_support.h>
  46
  47 #include <fileio.h>
  48 #include <image.h>
  49
  50 int cli_target_callback_event_handler(struct target_s *target, enum target_event event, void *priv);
  51
  52
  53 int handle_target_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  54 int handle_targets_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  55
  56 int handle_target_script_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  57 int handle_run_and_halt_time_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  58 int handle_working_area_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  59
  60 int handle_reg_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  61 int handle_poll_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  62 int handle_halt_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  63 int handle_wait_halt_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  64 int handle_reset_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  65 int handle_soft_reset_halt_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  66 int handle_resume_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  67 int handle_step_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  68 int handle_md_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  69 int handle_mw_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  70 int handle_load_image_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  71 int handle_dump_image_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  72 int handle_verify_image_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  73 int handle_bp_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  74 int handle_rbp_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  75 int handle_wp_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  76 int handle_rwp_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  77 int handle_virt2phys_command(command_context_t *cmd_ctx, char *cmd, char **args, int argc);
  78 int handle_profile_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  79
  80 /* targets
  81  */
  82 extern target_type_t arm7tdmi_target;
  83 extern target_type_t arm720t_target;
  84 extern target_type_t arm9tdmi_target;
  85 extern target_type_t arm920t_target;
  86 extern target_type_t arm966e_target;
  87 extern target_type_t arm926ejs_target;
  88 extern target_type_t feroceon_target;
  89 extern target_type_t xscale_target;
  90 extern target_type_t cortexm3_target;
  91 extern target_type_t arm11_target;
  92
  93 target_type_t *target_types[] =
  94 {
  95         &arm7tdmi_target,
  96         &arm9tdmi_target,
  97         &arm920t_target,
  98         &arm720t_target,
  99         &arm966e_target,
 100         &arm926ejs_target,
 101         &feroceon_target,
 102         &xscale_target,
 103         &cortexm3_target,
 104         &arm11_target,
 105         NULL,
 106 };
 107
 108 target_t *targets = NULL;
 109 target_event_callback_t *target_event_callbacks = NULL;
 110 target_timer_callback_t *target_timer_callbacks = NULL;
 111
 112 char *target_state_strings[] =
 113 {
 114         "unknown",
 115         "running",
 116         "halted",
 117         "reset",
 118         "debug_running",
 119 };
 120
 121 char *target_debug_reason_strings[] =
 122 {
 123         "debug request", "breakpoint", "watchpoint",
 124         "watchpoint and breakpoint", "single step",
 125         "target not halted", "undefined"
 126 };
 127
 128 char *target_endianess_strings[] =
 129 {
 130         "big endian",
 131         "little endian",
 132 };
 133
 134 static int target_continous_poll = 1;
 135
 136 /* read a u32 from a buffer in target memory endianness */
 137 u32 target_buffer_get_u32(target_t *target, u8 *buffer)
 138 {
 139         if (target->endianness == TARGET_LITTLE_ENDIAN)
 140                 return le_to_h_u32(buffer);
 141         else
 142                 return be_to_h_u32(buffer);
 143 }
 144
 145 /* read a u16 from a buffer in target memory endianness */
 146 u16 target_buffer_get_u16(target_t *target, u8 *buffer)
 147 {
 148         if (target->endianness == TARGET_LITTLE_ENDIAN)
 149                 return le_to_h_u16(buffer);
 150         else
 151                 return be_to_h_u16(buffer);
 152 }
 153
 154 /* write a u32 to a buffer in target memory endianness */
 155 void target_buffer_set_u32(target_t *target, u8 *buffer, u32 value)
 156 {
 157         if (target->endianness == TARGET_LITTLE_ENDIAN)
 158                 h_u32_to_le(buffer, value);
 159         else
 160                 h_u32_to_be(buffer, value);
 161 }
 162
 163 /* write a u16 to a buffer in target memory endianness */
 164 void target_buffer_set_u16(target_t *target, u8 *buffer, u16 value)
 165 {
 166         if (target->endianness == TARGET_LITTLE_ENDIAN)
 167                 h_u16_to_le(buffer, value);
 168         else
 169                 h_u16_to_be(buffer, value);
 170 }
 171
 172 /* returns a pointer to the n-th configured target */
 173 target_t* get_target_by_num(int num)
 174 {
 175         target_t *target = targets;
 176         int i = 0;
 177
 178         while (target)
 179         {
 180                 if (num == i)
 181                         return target;
 182                 target = target->next;
 183                 i++;
 184         }
 185
 186         return NULL;
 187 }
 188
 189 int get_num_by_target(target_t *query_target)
 190 {
 191         target_t *target = targets;
 192         int i = 0;
 193
 194         while (target)
 195         {
 196                 if (target == query_target)
 197                         return i;
 198                 target = target->next;
 199                 i++;
 200         }
 201
 202         return -1;
 203 }
 204
 205 target_t* get_current_target(command_context_t *cmd_ctx)
 206 {
 207         target_t *target = get_target_by_num(cmd_ctx->current_target);
 208
 209         if (target == NULL)
 210         {
 211                 LOG_ERROR("BUG: current_target out of bounds");
 212                 exit(-1);
 213         }
 214
 215         return target;
 216 }
 217
 218 /* Process target initialization, when target entered debug out of reset
 219  * the handler is unregistered at the end of this function, so it's only called once
 220  */
 221 int target_init_handler(struct target_s *target, enum target_event event, void *priv)
 222 {
 223         FILE *script;
 224         struct command_context_s *cmd_ctx = priv;
 225
 226         if ((event == TARGET_EVENT_HALTED) && (target->reset_script))
 227         {
 228                 target_unregister_event_callback(target_init_handler, priv);
 229
 230                 script = open_file_from_path(target->reset_script, "r");
 231                 if (!script)
 232                 {
 233                         LOG_ERROR("couldn't open script file %s", target->reset_script);
 234                                 return ERROR_OK;
 235                 }
 236
 237                 LOG_INFO("executing reset script '%s'", target->reset_script);
 238                 command_run_file(cmd_ctx, script, COMMAND_EXEC);
 239                 fclose(script);
 240
 241                 jtag_execute_queue();
 242         }
 243
 244         return ERROR_OK;
 245 }
 246
 247 int target_run_and_halt_handler(void *priv)
 248 {
 249         target_t *target = priv;
 250
 251         target->type->halt(target);
 252
 253         return ERROR_OK;
 254 }
 255
 256 int target_process_reset(struct command_context_s *cmd_ctx)
 257 {
 258         int retval = ERROR_OK;
 259         target_t *target;
 260         struct timeval timeout, now;
 261
 262         jtag->speed(jtag_speed);
 263
 264         if ((retval = jtag_init_reset(cmd_ctx)) != ERROR_OK)
 265                 return retval;
 266
 267         if ((retval = target_examine(cmd_ctx)) != ERROR_OK)
 268                 return retval;
 269
 270         /* prepare reset_halt where necessary */
 271         target = targets;
 272         while (target)
 273         {
 274                 if (jtag_reset_config & RESET_SRST_PULLS_TRST)
 275                 {
 276                         switch (target->reset_mode)
 277                         {
 278                                 case RESET_HALT:
 279                                         command_print(cmd_ctx, "nSRST pulls nTRST, falling back to \"reset run_and_halt\"");
 280                                         target->reset_mode = RESET_RUN_AND_HALT;
 281                                         break;
 282                                 case RESET_INIT:
 283                                         command_print(cmd_ctx, "nSRST pulls nTRST, falling back to \"reset run_and_init\"");
 284                                         target->reset_mode = RESET_RUN_AND_INIT;
 285                                         break;
 286                                 default:
 287                                         break;
 288                         }
 289                 }
 290                 target = target->next;
 291         }
 292
 293         target = targets;
 294         while (target)
 295         {
 296                 /* we have no idea what state the target is in, so we
 297                  * have to drop working areas
 298                  */
 299                 target_free_all_working_areas_restore(target, 0);
 300                 target->type->assert_reset(target);
 301                 target = target->next;
 302         }
 303         if ((retval = jtag_execute_queue()) != ERROR_OK)
 304         {
 305                 LOG_WARNING("JTAG communication failed asserting reset.");
 306                 retval = ERROR_OK;
 307         }
 308
 309         /* request target halt if necessary, and schedule further action */
 310         target = targets;
 311         while (target)
 312         {
 313                 switch (target->reset_mode)
 314                 {
 315                         case RESET_RUN:
 316                                 /* nothing to do if target just wants to be run */
 317                                 break;
 318                         case RESET_RUN_AND_HALT:
 319                                 /* schedule halt */
 320                                 target_register_timer_callback(target_run_and_halt_handler, target->run_and_halt_time, 0, target);
 321                                 break;
 322                         case RESET_RUN_AND_INIT:
 323                                 /* schedule halt */
 324                                 target_register_timer_callback(target_run_and_halt_handler, target->run_and_halt_time, 0, target);
 325                                 target_register_event_callback(target_init_handler, cmd_ctx);
 326                                 break;
 327                         case RESET_HALT:
 328                                 target->type->halt(target);
 329                                 break;
 330                         case RESET_INIT:
 331                                 target->type->halt(target);
 332                                 target_register_event_callback(target_init_handler, cmd_ctx);
 333                                 break;
 334                         default:
 335                                 LOG_ERROR("BUG: unknown target->reset_mode");
 336                 }
 337                 target = target->next;
 338         }
 339
 340         if ((retval = jtag_execute_queue()) != ERROR_OK)
 341         {
 342                 LOG_WARNING("JTAG communication failed while reset was asserted. Consider using srst_only for reset_config.");
 343                 retval = ERROR_OK;
 344         }
 345
 346         target = targets;
 347         while (target)
 348         {
 349                 target->type->deassert_reset(target);
 350                 target = target->next;
 351         }
 352
 353         if ((retval = jtag_execute_queue()) != ERROR_OK)
 354         {
 355                 LOG_WARNING("JTAG communication failed while deasserting reset.");
 356                 retval = ERROR_OK;
 357         }
 358
 359         LOG_DEBUG("Waiting for halted stated as approperiate");
 360
 361         /* Wait for reset to complete, maximum 5 seconds. */
 362         gettimeofday(&timeout, NULL);
 363         timeval_add_time(&timeout, 5, 0);
 364         for(;;)
 365         {
 366                 gettimeofday(&now, NULL);
 367
 368                 target_call_timer_callbacks_now();
 369
 370                 target = targets;
 371                 while (target)
 372                 {
 373                         LOG_DEBUG("Polling target");
 374                         target->type->poll(target);
 375                         if ((target->reset_mode == RESET_RUN_AND_INIT) ||
 376                                         (target->reset_mode == RESET_RUN_AND_HALT) ||
 377                                         (target->reset_mode == RESET_HALT) ||
 378                                         (target->reset_mode == RESET_INIT))
 379                         {
 380                                 if (target->state != TARGET_HALTED)
 381                                 {
 382                                         if ((now.tv_sec > timeout.tv_sec) || ((now.tv_sec == timeout.tv_sec) && (now.tv_usec >= timeout.tv_usec)))
 383                                         {
 384                                                 LOG_USER("Timed out waiting for halt after reset");
 385                                                 goto done;
 386                                         }
 387                                         /* this will send alive messages on e.g. GDB remote protocol. */
 388                                         usleep(500*1000);
 389                                         LOG_USER_N("%s", ""); /* avoid warning about zero length formatting message*/
 390                                         goto again;
 391                                 }
 392                         }
 393                         target = target->next;
 394                 }
 395                 /* All targets we're waiting for are halted */
 396                 break;
 397
 398                 again:;
 399         }
 400         done:
 401
 402
 403         /* We want any events to be processed before the prompt */
 404         target_call_timer_callbacks_now();
 405
 406         /* if we timed out we need to unregister these handlers */
 407         target = targets;
 408         while (target)
 409         {
 410                 target_unregister_timer_callback(target_run_and_halt_handler, target);
 411                 target = target->next;
 412         }
 413         target_unregister_event_callback(target_init_handler, cmd_ctx);
 414
 415
 416         jtag->speed(jtag_speed_post_reset);
 417
 418         return retval;
 419 }
 420
 421 static int default_virt2phys(struct target_s *target, u32 virtual, u32 *physical)
 422 {
 423         *physical = virtual;
 424         return ERROR_OK;
 425 }
 426
 427 static int default_mmu(struct target_s *target, int *enabled)
 428 {
 429         *enabled = 0;
 430         return ERROR_OK;
 431 }
 432
 433 static int default_examine(struct command_context_s *cmd_ctx, struct target_s *target)
 434 {
 435         return ERROR_OK;
 436 }
 437
 438
 439 int target_examine(struct command_context_s *cmd_ctx)
 440 {
 441         int retval = ERROR_OK;
 442         target_t *target = targets;
 443         while (target)
 444         {
 445                 if ((retval = target->type->examine(cmd_ctx, target))!=ERROR_OK)
 446                         return retval;
 447                 target = target->next;
 448         }
 449         return retval;
 450 }
 451 int target_init(struct command_context_s *cmd_ctx)
 452 {
 453         target_t *target = targets;
 454
 455         while (target)
 456         {
 457                 target->type->examined = 0;
 458                 if (target->type->examine == NULL)
 459                 {
 460                         target->type->examine = default_examine;
 461                 }
 462
 463                 if (target->type->init_target(cmd_ctx, target) != ERROR_OK)
 464                 {
 465                         LOG_ERROR("target '%s' init failed", target->type->name);
 466                         exit(-1);
 467                 }
 468
 469                 /* Set up default functions if none are provided by target */
 470                 if (target->type->virt2phys == NULL)
 471                 {
 472                         target->type->virt2phys = default_virt2phys;
 473                 }
 474                 if (target->type->mmu == NULL)
 475                 {
 476                         target->type->mmu = default_mmu;
 477                 }
 478                 target = target->next;
 479         }
 480
 481         if (targets)
 482         {
 483                 target_register_user_commands(cmd_ctx);
 484                 target_register_timer_callback(handle_target, 100, 1, NULL);
 485         }
 486
 487         return ERROR_OK;
 488 }
 489
 490 int target_register_event_callback(int (*callback)(struct target_s *target, enum target_event event, void *priv), void *priv)
 491 {
 492         target_event_callback_t **callbacks_p = &target_event_callbacks;
 493
 494         if (callback == NULL)
 495         {
 496                 return ERROR_INVALID_ARGUMENTS;
 497         }
 498
 499         if (*callbacks_p)
 500         {
 501                 while ((*callbacks_p)->next)
 502                         callbacks_p = &((*callbacks_p)->next);
 503                 callbacks_p = &((*callbacks_p)->next);
 504         }
 505
 506         (*callbacks_p) = malloc(sizeof(target_event_callback_t));
 507         (*callbacks_p)->callback = callback;
 508         (*callbacks_p)->priv = priv;
 509         (*callbacks_p)->next = NULL;
 510
 511         return ERROR_OK;
 512 }
 513
 514 int target_register_timer_callback(int (*callback)(void *priv), int time_ms, int periodic, void *priv)
 515 {
 516         target_timer_callback_t **callbacks_p = &target_timer_callbacks;
 517         struct timeval now;
 518
 519         if (callback == NULL)
 520         {
 521                 return ERROR_INVALID_ARGUMENTS;
 522         }
 523
 524         if (*callbacks_p)
 525         {
 526                 while ((*callbacks_p)->next)
 527                         callbacks_p = &((*callbacks_p)->next);
 528                 callbacks_p = &((*callbacks_p)->next);
 529         }
 530
 531         (*callbacks_p) = malloc(sizeof(target_timer_callback_t));
 532         (*callbacks_p)->callback = callback;
 533         (*callbacks_p)->periodic = periodic;
 534         (*callbacks_p)->time_ms = time_ms;
 535
 536         gettimeofday(&now, NULL);
 537         (*callbacks_p)->when.tv_usec = now.tv_usec + (time_ms % 1000) * 1000;
 538         time_ms -= (time_ms % 1000);
 539         (*callbacks_p)->when.tv_sec = now.tv_sec + (time_ms / 1000);
 540         if ((*callbacks_p)->when.tv_usec > 1000000)
 541         {
 542                 (*callbacks_p)->when.tv_usec = (*callbacks_p)->when.tv_usec - 1000000;
 543                 (*callbacks_p)->when.tv_sec += 1;
 544         }
 545
 546         (*callbacks_p)->priv = priv;
 547         (*callbacks_p)->next = NULL;
 548
 549         return ERROR_OK;
 550 }
 551
 552 int target_unregister_event_callback(int (*callback)(struct target_s *target, enum target_event event, void *priv), void *priv)
 553 {
 554         target_event_callback_t **p = &target_event_callbacks;
 555         target_event_callback_t *c = target_event_callbacks;
 556
 557         if (callback == NULL)
 558         {
 559                 return ERROR_INVALID_ARGUMENTS;
 560         }
 561
 562         while (c)
 563         {
 564                 target_event_callback_t *next = c->next;
 565                 if ((c->callback == callback) && (c->priv == priv))
 566                 {
 567                         *p = next;
 568                         free(c);
 569                         return ERROR_OK;
 570                 }
 571                 else
 572                         p = &(c->next);
 573                 c = next;
 574         }
 575
 576         return ERROR_OK;
 577 }
 578
 579 int target_unregister_timer_callback(int (*callback)(void *priv), void *priv)
 580 {
 581         target_timer_callback_t **p = &target_timer_callbacks;
 582         target_timer_callback_t *c = target_timer_callbacks;
 583
 584         if (callback == NULL)
 585         {
 586                 return ERROR_INVALID_ARGUMENTS;
 587         }
 588
 589         while (c)
 590         {
 591                 target_timer_callback_t *next = c->next;
 592                 if ((c->callback == callback) && (c->priv == priv))
 593                 {
 594                         *p = next;
 595                         free(c);
 596                         return ERROR_OK;
 597                 }
 598                 else
 599                         p = &(c->next);
 600                 c = next;
 601         }
 602
 603         return ERROR_OK;
 604 }
 605
 606 int target_call_event_callbacks(target_t *target, enum target_event event)
 607 {
 608         target_event_callback_t *callback = target_event_callbacks;
 609         target_event_callback_t *next_callback;
 610
 611         LOG_DEBUG("target event %i", event);
 612
 613         while (callback)
 614         {
 615                 next_callback = callback->next;
 616                 callback->callback(target, event, callback->priv);
 617                 callback = next_callback;
 618         }
 619
 620         return ERROR_OK;
 621 }
 622
 623 static int target_call_timer_callbacks_check_time(int checktime)
 624 {
 625         target_timer_callback_t *callback = target_timer_callbacks;
 626         target_timer_callback_t *next_callback;
 627         struct timeval now;
 628
 629         gettimeofday(&now, NULL);
 630
 631         while (callback)
 632         {
 633                 next_callback = callback->next;
 634
 635                 if ((!checktime&&callback->periodic)||
 636                                 (((now.tv_sec >= callback->when.tv_sec) && (now.tv_usec >= callback->when.tv_usec))
 637                                                 || (now.tv_sec > callback->when.tv_sec)))
 638                 {
 639                         callback->callback(callback->priv);
 640                         if (callback->periodic)
 641                         {
 642                                 int time_ms = callback->time_ms;
 643                                 callback->when.tv_usec = now.tv_usec + (time_ms % 1000) * 1000;
 644                                 time_ms -= (time_ms % 1000);
 645                                 callback->when.tv_sec = now.tv_sec + time_ms / 1000;
 646                                 if (callback->when.tv_usec > 1000000)
 647                                 {
 648                                         callback->when.tv_usec = callback->when.tv_usec - 1000000;
 649                                         callback->when.tv_sec += 1;
 650                                 }
 651                         }
 652                         else
 653                                 target_unregister_timer_callback(callback->callback, callback->priv);
 654                 }
 655
 656                 callback = next_callback;
 657         }
 658
 659         return ERROR_OK;
 660 }
 661
 662 int target_call_timer_callbacks()
 663 {
 664         return target_call_timer_callbacks_check_time(1);
 665 }
 666
 667 /* invoke periodic callbacks immediately */
 668 int target_call_timer_callbacks_now()
 669 {
 670         return target_call_timer_callbacks(0);
 671 }
 672
 673
 674 int target_alloc_working_area(struct target_s *target, u32 size, working_area_t **area)
 675 {
 676         working_area_t *c = target->working_areas;
 677         working_area_t *new_wa = NULL;
 678
 679         /* Reevaluate working area address based on MMU state*/
 680         if (target->working_areas == NULL)
 681         {
 682                 int retval;
 683                 int enabled;
 684                 retval = target->type->mmu(target, &enabled);
 685                 if (retval != ERROR_OK)
 686                 {
 687                         return retval;
 688                 }
 689                 if (enabled)
 690                 {
 691                         target->working_area = target->working_area_virt;
 692                 }
 693                 else
 694                 {
 695                         target->working_area = target->working_area_phys;
 696                 }
 697         }
 698
 699         /* only allocate multiples of 4 byte */
 700         if (size % 4)
 701         {
 702                 LOG_ERROR("BUG: code tried to allocate unaligned number of bytes, padding");
 703                 size = CEIL(size, 4);
 704         }
 705
 706         /* see if there's already a matching working area */
 707         while (c)
 708         {
 709                 if ((c->free) && (c->size == size))
 710                 {
 711                         new_wa = c;
 712                         break;
 713                 }
 714                 c = c->next;
 715         }
 716
 717         /* if not, allocate a new one */
 718         if (!new_wa)
 719         {
 720                 working_area_t **p = &target->working_areas;
 721                 u32 first_free = target->working_area;
 722                 u32 free_size = target->working_area_size;
 723
 724                 LOG_DEBUG("allocating new working area");
 725
 726                 c = target->working_areas;
 727                 while (c)
 728                 {
 729                         first_free += c->size;
 730                         free_size -= c->size;
 731                         p = &c->next;
 732                         c = c->next;
 733                 }
 734
 735                 if (free_size < size)
 736                 {
 737                         LOG_WARNING("not enough working area available(requested %d, free %d)", size, free_size);
 738                         return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
 739                 }
 740
 741                 new_wa = malloc(sizeof(working_area_t));
 742                 new_wa->next = NULL;
 743                 new_wa->size = size;
 744                 new_wa->address = first_free;
 745
 746                 if (target->backup_working_area)
 747                 {
 748                         new_wa->backup = malloc(new_wa->size);
 749                         target->type->read_memory(target, new_wa->address, 4, new_wa->size / 4, new_wa->backup);
 750                 }
 751                 else
 752                 {
 753                         new_wa->backup = NULL;
 754                 }
 755
 756                 /* put new entry in list */
 757                 *p = new_wa;
 758         }
 759
 760         /* mark as used, and return the new (reused) area */
 761         new_wa->free = 0;
 762         *area = new_wa;
 763
 764         /* user pointer */
 765         new_wa->user = area;
 766
 767         return ERROR_OK;
 768 }
 769
 770 int target_free_working_area_restore(struct target_s *target, working_area_t *area, int restore)
 771 {
 772         if (area->free)
 773                 return ERROR_OK;
 774
 775         if (restore&&target->backup_working_area)
 776                 target->type->write_memory(target, area->address, 4, area->size / 4, area->backup);
 777
 778         area->free = 1;
 779
 780         /* mark user pointer invalid */
 781         *area->user = NULL;
 782         area->user = NULL;
 783
 784         return ERROR_OK;
 785 }
 786
 787 int target_free_working_area(struct target_s *target, working_area_t *area)
 788 {
 789         return target_free_working_area_restore(target, area, 1);
 790 }
 791
 792 int target_free_all_working_areas_restore(struct target_s *target, int restore)
 793 {
 794         working_area_t *c = target->working_areas;
 795
 796         while (c)
 797         {
 798                 working_area_t *next = c->next;
 799                 target_free_working_area_restore(target, c, restore);
 800
 801                 if (c->backup)
 802                         free(c->backup);
 803
 804                 free(c);
 805
 806                 c = next;
 807         }
 808
 809         target->working_areas = NULL;
 810
 811         return ERROR_OK;
 812 }
 813
 814 int target_free_all_working_areas(struct target_s *target)
 815 {
 816         return target_free_all_working_areas_restore(target, 1);
 817 }
 818
 819 int target_register_commands(struct command_context_s *cmd_ctx)
 820 {
 821         register_command(cmd_ctx, NULL, "target", handle_target_command, COMMAND_CONFIG, "target <cpu> [reset_init default - DEPRECATED] <chainpos> <endianness> <variant> [cpu type specifc args]");
 822         register_command(cmd_ctx, NULL, "targets", handle_targets_command, COMMAND_EXEC, NULL);
 823         register_command(cmd_ctx, NULL, "target_script", handle_target_script_command, COMMAND_CONFIG, NULL);
 824         register_command(cmd_ctx, NULL, "run_and_halt_time", handle_run_and_halt_time_command, COMMAND_CONFIG, "<target> <run time ms>");
 825         register_command(cmd_ctx, NULL, "working_area", handle_working_area_command, COMMAND_ANY, "working_area <target#> <address> <size> <'backup'|'nobackup'> [virtual address]");
 826         register_command(cmd_ctx, NULL, "virt2phys", handle_virt2phys_command, COMMAND_ANY, "virt2phys <virtual address>");
 827         register_command(cmd_ctx, NULL, "profile", handle_profile_command, COMMAND_EXEC, "PRELIMINARY! - profile <seconds> <gmon.out>");
 828
 829         return ERROR_OK;
 830 }
 831
 832 int target_arch_state(struct target_s *target)
 833 {
 834         int retval;
 835         if (target==NULL)
 836         {
 837                 LOG_USER("No target has been configured");
 838                 return ERROR_OK;
 839         }
 840
 841         LOG_USER("target state: %s", target_state_strings[target->state]);
 842
 843         if (target->state!=TARGET_HALTED)
 844                 return ERROR_OK;
 845
 846         retval=target->type->arch_state(target);
 847         return retval;
 848 }
 849
 850 /* Single aligned words are guaranteed to use 16 or 32 bit access
 851  * mode respectively, otherwise data is handled as quickly as
 852  * possible
 853  */
 854 int target_write_buffer(struct target_s *target, u32 address, u32 size, u8 *buffer)
 855 {
 856         int retval;
 857
 858         LOG_DEBUG("writing buffer of %i byte at 0x%8.8x", size, address);
 859
 860         if (((address % 2) == 0) && (size == 2))
 861         {
 862                 return target->type->write_memory(target, address, 2, 1, buffer);
 863         }
 864
 865         /* handle unaligned head bytes */
 866         if (address % 4)
 867         {
 868                 int unaligned = 4 - (address % 4);
 869
 870                 if (unaligned > size)
 871                         unaligned = size;
 872
 873                 if ((retval = target->type->write_memory(target, address, 1, unaligned, buffer)) != ERROR_OK)
 874                         return retval;
 875
 876                 buffer += unaligned;
 877                 address += unaligned;
 878                 size -= unaligned;
 879         }
 880
 881         /* handle aligned words */
 882         if (size >= 4)
 883         {
 884                 int aligned = size - (size % 4);
 885
 886                 /* use bulk writes above a certain limit. This may have to be changed */
 887                 if (aligned > 128)
 888                 {
 889                         if ((retval = target->type->bulk_write_memory(target, address, aligned / 4, buffer)) != ERROR_OK)
 890                                 return retval;
 891                 }
 892                 else
 893                 {
 894                         if ((retval = target->type->write_memory(target, address, 4, aligned / 4, buffer)) != ERROR_OK)
 895                                 return retval;
 896                 }
 897
 898                 buffer += aligned;
 899                 address += aligned;
 900                 size -= aligned;
 901         }
 902
 903         /* handle tail writes of less than 4 bytes */
 904         if (size > 0)
 905         {
 906                 if ((retval = target->type->write_memory(target, address, 1, size, buffer)) != ERROR_OK)
 907                         return retval;
 908         }
 909
 910         return ERROR_OK;
 911 }
 912
 913
 914 /* Single aligned words are guaranteed to use 16 or 32 bit access
 915  * mode respectively, otherwise data is handled as quickly as
 916  * possible
 917  */
 918 int target_read_buffer(struct target_s *target, u32 address, u32 size, u8 *buffer)
 919 {
 920         int retval;
 921
 922         LOG_DEBUG("reading buffer of %i byte at 0x%8.8x", size, address);
 923
 924         if (((address % 2) == 0) && (size == 2))
 925         {
 926                 return target->type->read_memory(target, address, 2, 1, buffer);
 927         }
 928
 929         /* handle unaligned head bytes */
 930         if (address % 4)
 931         {
 932                 int unaligned = 4 - (address % 4);
 933
 934                 if (unaligned > size)
 935                         unaligned = size;
 936
 937                 if ((retval = target->type->read_memory(target, address, 1, unaligned, buffer)) != ERROR_OK)
 938                         return retval;
 939
 940                 buffer += unaligned;
 941                 address += unaligned;
 942                 size -= unaligned;
 943         }
 944
 945         /* handle aligned words */
 946         if (size >= 4)
 947         {
 948                 int aligned = size - (size % 4);
 949
 950                 if ((retval = target->type->read_memory(target, address, 4, aligned / 4, buffer)) != ERROR_OK)
 951                         return retval;
 952
 953                 buffer += aligned;
 954                 address += aligned;
 955                 size -= aligned;
 956         }
 957
 958         /* handle tail writes of less than 4 bytes */
 959         if (size > 0)
 960         {
 961                 if ((retval = target->type->read_memory(target, address, 1, size, buffer)) != ERROR_OK)
 962                         return retval;
 963         }
 964
 965         return ERROR_OK;
 966 }
 967
 968 int target_checksum_memory(struct target_s *target, u32 address, u32 size, u32* crc)
 969 {
 970         u8 *buffer;
 971         int retval;
 972         int i;
 973         u32 checksum = 0;
 974
 975         if ((retval = target->type->checksum_memory(target, address,
 976                 size, &checksum)) == ERROR_TARGET_RESOURCE_NOT_AVAILABLE)
 977         {
 978                 buffer = malloc(size);
 979                 if (buffer == NULL)
 980                 {
 981                         LOG_ERROR("error allocating buffer for section (%d bytes)", size);
 982                         return ERROR_INVALID_ARGUMENTS;
 983                 }
 984                 retval = target_read_buffer(target, address, size, buffer);
 985                 if (retval != ERROR_OK)
 986                 {
 987                         free(buffer);
 988                         return retval;
 989                 }
 990
 991                 /* convert to target endianess */
 992                 for (i = 0; i < (size/sizeof(u32)); i++)
 993                 {
 994                         u32 target_data;
 995                         target_data = target_buffer_get_u32(target, &buffer[i*sizeof(u32)]);
 996                         target_buffer_set_u32(target, &buffer[i*sizeof(u32)], target_data);
 997                 }
 998
 999                 retval = image_calculate_checksum( buffer, size, &checksum );
1000                 free(buffer);
1001         }
1002
1003         *crc = checksum;
1004
1005         return retval;
1006 }
1007
1008 int target_read_u32(struct target_s *target, u32 address, u32 *value)
1009 {
1010         u8 value_buf[4];
1011
1012         int retval = target->type->read_memory(target, address, 4, 1, value_buf);
1013
1014         if (retval == ERROR_OK)
1015         {
1016                 *value = target_buffer_get_u32(target, value_buf);
1017                 LOG_DEBUG("address: 0x%8.8x, value: 0x%8.8x", address, *value);
1018         }
1019         else
1020         {
1021                 *value = 0x0;
1022                 LOG_DEBUG("address: 0x%8.8x failed", address);
1023         }
1024
1025         return retval;
1026 }
1027
1028 int target_read_u16(struct target_s *target, u32 address, u16 *value)
1029 {
1030         u8 value_buf[2];
1031
1032         int retval = target->type->read_memory(target, address, 2, 1, value_buf);
1033
1034         if (retval == ERROR_OK)
1035         {
1036                 *value = target_buffer_get_u16(target, value_buf);
1037                 LOG_DEBUG("address: 0x%8.8x, value: 0x%4.4x", address, *value);
1038         }
1039         else
1040         {
1041                 *value = 0x0;
1042                 LOG_DEBUG("address: 0x%8.8x failed", address);
1043         }
1044
1045         return retval;
1046 }
1047
1048 int target_read_u8(struct target_s *target, u32 address, u8 *value)
1049 {
1050         int retval = target->type->read_memory(target, address, 1, 1, value);
1051
1052         if (retval == ERROR_OK)
1053         {
1054                 LOG_DEBUG("address: 0x%8.8x, value: 0x%2.2x", address, *value);
1055         }
1056         else
1057         {
1058                 *value = 0x0;
1059                 LOG_DEBUG("address: 0x%8.8x failed", address);
1060         }
1061
1062         return retval;
1063 }
1064
1065 int target_write_u32(struct target_s *target, u32 address, u32 value)
1066 {
1067         int retval;
1068         u8 value_buf[4];
1069
1070         LOG_DEBUG("address: 0x%8.8x, value: 0x%8.8x", address, value);
1071
1072         target_buffer_set_u32(target, value_buf, value);
1073         if ((retval = target->type->write_memory(target, address, 4, 1, value_buf)) != ERROR_OK)
1074         {
1075                 LOG_DEBUG("failed: %i", retval);
1076         }
1077
1078         return retval;
1079 }
1080
1081 int target_write_u16(struct target_s *target, u32 address, u16 value)
1082 {
1083         int retval;
1084         u8 value_buf[2];
1085
1086         LOG_DEBUG("address: 0x%8.8x, value: 0x%8.8x", address, value);
1087
1088         target_buffer_set_u16(target, value_buf, value);
1089         if ((retval = target->type->write_memory(target, address, 2, 1, value_buf)) != ERROR_OK)
1090         {
1091                 LOG_DEBUG("failed: %i", retval);
1092         }
1093
1094         return retval;
1095 }
1096
1097 int target_write_u8(struct target_s *target, u32 address, u8 value)
1098 {
1099         int retval;
1100
1101         LOG_DEBUG("address: 0x%8.8x, value: 0x%2.2x", address, value);
1102
1103         if ((retval = target->type->read_memory(target, address, 1, 1, &value)) != ERROR_OK)
1104         {
1105                 LOG_DEBUG("failed: %i", retval);
1106         }
1107
1108         return retval;
1109 }
1110
1111 int target_register_user_commands(struct command_context_s *cmd_ctx)
1112 {
1113         register_command(cmd_ctx,  NULL, "reg", handle_reg_command, COMMAND_EXEC, NULL);
1114         register_command(cmd_ctx,  NULL, "poll", handle_poll_command, COMMAND_EXEC, "poll target state");
1115         register_command(cmd_ctx,  NULL, "wait_halt", handle_wait_halt_command, COMMAND_EXEC, "wait for target halt [time (s)]");
1116         register_command(cmd_ctx,  NULL, "halt", handle_halt_command, COMMAND_EXEC, "halt target");
1117         register_command(cmd_ctx,  NULL, "resume", handle_resume_command, COMMAND_EXEC, "resume target [addr]");
1118         register_command(cmd_ctx,  NULL, "step", handle_step_command, COMMAND_EXEC, "step one instruction from current PC or [addr]");
1119         register_command(cmd_ctx,  NULL, "reset", handle_reset_command, COMMAND_EXEC, "reset target [run|halt|init|run_and_halt|run_and_init]");
1120         register_command(cmd_ctx,  NULL, "soft_reset_halt", handle_soft_reset_halt_command, COMMAND_EXEC, "halt the target and do a soft reset");
1121
1122         register_command(cmd_ctx,  NULL, "mdw", handle_md_command, COMMAND_EXEC, "display memory words <addr> [count]");
1123         register_command(cmd_ctx,  NULL, "mdh", handle_md_command, COMMAND_EXEC, "display memory half-words <addr> [count]");
1124         register_command(cmd_ctx,  NULL, "mdb", handle_md_command, COMMAND_EXEC, "display memory bytes <addr> [count]");
1125
1126         register_command(cmd_ctx,  NULL, "mww", handle_mw_command, COMMAND_EXEC, "write memory word <addr> <value> [count]");
1127         register_command(cmd_ctx,  NULL, "mwh", handle_mw_command, COMMAND_EXEC, "write memory half-word <addr> <value> [count]");
1128         register_command(cmd_ctx,  NULL, "mwb", handle_mw_command, COMMAND_EXEC, "write memory byte <addr> <value> [count]");
1129
1130         register_command(cmd_ctx,  NULL, "bp", handle_bp_command, COMMAND_EXEC, "set breakpoint <address> <length> [hw]");
1131         register_command(cmd_ctx,  NULL, "rbp", handle_rbp_command, COMMAND_EXEC, "remove breakpoint <adress>");
1132         register_command(cmd_ctx,  NULL, "wp", handle_wp_command, COMMAND_EXEC, "set watchpoint <address> <length> <r/w/a> [value] [mask]");
1133         register_command(cmd_ctx,  NULL, "rwp", handle_rwp_command, COMMAND_EXEC, "remove watchpoint <adress>");
1134
1135         register_command(cmd_ctx,  NULL, "load_image", handle_load_image_command, COMMAND_EXEC, "load_image <file> <address> ['bin'|'ihex'|'elf'|'s19']");
1136         register_command(cmd_ctx,  NULL, "dump_image", handle_dump_image_command, COMMAND_EXEC, "dump_image <file> <address> <size>");
1137         register_command(cmd_ctx,  NULL, "verify_image", handle_verify_image_command, COMMAND_EXEC, "verify_image <file> [offset] [type]");
1138         register_command(cmd_ctx,  NULL, "load_binary", handle_load_image_command, COMMAND_EXEC, "[DEPRECATED] load_binary <file> <address>");
1139         register_command(cmd_ctx,  NULL, "dump_binary", handle_dump_image_command, COMMAND_EXEC, "[DEPRECATED] dump_binary <file> <address> <size>");
1140
1141         target_request_register_commands(cmd_ctx);
1142         trace_register_commands(cmd_ctx);
1143
1144         return ERROR_OK;
1145 }
1146
1147 int handle_targets_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1148 {
1149         target_t *target = targets;
1150         int count = 0;
1151
1152         if (argc == 1)
1153         {
1154                 int num = strtoul(args[0], NULL, 0);
1155
1156                 while (target)
1157                 {
1158                         count++;
1159                         target = target->next;
1160                 }
1161
1162                 if (num < count)
1163                         cmd_ctx->current_target = num;
1164                 else
1165                         command_print(cmd_ctx, "%i is out of bounds, only %i targets are configured", num, count);
1166
1167                 return ERROR_OK;
1168         }
1169
1170         while (target)
1171         {
1172                 command_print(cmd_ctx, "%i: %s (%s), state: %s", count++, target->type->name, target_endianess_strings[target->endianness], target_state_strings[target->state]);
1173                 target = target->next;
1174         }
1175
1176         return ERROR_OK;
1177 }
1178
1179 int handle_target_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1180 {
1181         int i;
1182         int found = 0;
1183
1184         if (argc < 3)
1185         {
1186                 return ERROR_COMMAND_SYNTAX_ERROR;
1187         }
1188
1189         /* search for the specified target */
1190         if (args[0] && (args[0][0] != 0))
1191         {
1192                 for (i = 0; target_types[i]; i++)
1193                 {
1194                         if (strcmp(args[0], target_types[i]->name) == 0)
1195                         {
1196                                 target_t **last_target_p = &targets;
1197
1198                                 /* register target specific commands */
1199                                 if (target_types[i]->register_commands(cmd_ctx) != ERROR_OK)
1200                                 {
1201                                         LOG_ERROR("couldn't register '%s' commands", args[0]);
1202                                         exit(-1);
1203                                 }
1204
1205                                 if (*last_target_p)
1206                                 {
1207                                         while ((*last_target_p)->next)
1208                                                 last_target_p = &((*last_target_p)->next);
1209                                         last_target_p = &((*last_target_p)->next);
1210                                 }
1211
1212                                 *last_target_p = malloc(sizeof(target_t));
1213
1214                                 (*last_target_p)->type = target_types[i];
1215
1216                                 if (strcmp(args[1], "big") == 0)
1217                                         (*last_target_p)->endianness = TARGET_BIG_ENDIAN;
1218                                 else if (strcmp(args[1], "little") == 0)
1219                                         (*last_target_p)->endianness = TARGET_LITTLE_ENDIAN;
1220                                 else
1221                                 {
1222                                         LOG_ERROR("endianness must be either 'little' or 'big', not '%s'", args[1]);
1223                                         return ERROR_COMMAND_SYNTAX_ERROR;
1224                                 }
1225
1226                                 /* what to do on a target reset */
1227                                 (*last_target_p)->reset_mode = RESET_INIT; /* default */
1228                                 if (strcmp(args[2], "reset_halt") == 0)
1229                                         (*last_target_p)->reset_mode = RESET_HALT;
1230                                 else if (strcmp(args[2], "reset_run") == 0)
1231                                         (*last_target_p)->reset_mode = RESET_RUN;
1232                                 else if (strcmp(args[2], "reset_init") == 0)
1233                                         (*last_target_p)->reset_mode = RESET_INIT;
1234                                 else if (strcmp(args[2], "run_and_halt") == 0)
1235                                         (*last_target_p)->reset_mode = RESET_RUN_AND_HALT;
1236                                 else if (strcmp(args[2], "run_and_init") == 0)
1237                                         (*last_target_p)->reset_mode = RESET_RUN_AND_INIT;
1238                                 else
1239                                 {
1240                                         /* Kludge! we want to make this reset arg optional while remaining compatible! */
1241                                         args--;
1242                                         argc++;
1243                                 }
1244                                 (*last_target_p)->run_and_halt_time = 1000; /* default 1s */
1245
1246                                 (*last_target_p)->reset_script = NULL;
1247                                 (*last_target_p)->post_halt_script = NULL;
1248                                 (*last_target_p)->pre_resume_script = NULL;
1249                                 (*last_target_p)->gdb_program_script = NULL;
1250
1251                                 (*last_target_p)->working_area = 0x0;
1252                                 (*last_target_p)->working_area_size = 0x0;
1253                                 (*last_target_p)->working_areas = NULL;
1254                                 (*last_target_p)->backup_working_area = 0;
1255
1256                                 (*last_target_p)->state = TARGET_UNKNOWN;
1257                                 (*last_target_p)->debug_reason = DBG_REASON_UNDEFINED;
1258                                 (*last_target_p)->reg_cache = NULL;
1259                                 (*last_target_p)->breakpoints = NULL;
1260                                 (*last_target_p)->watchpoints = NULL;
1261                                 (*last_target_p)->next = NULL;
1262                                 (*last_target_p)->arch_info = NULL;
1263
1264                                 /* initialize trace information */
1265                                 (*last_target_p)->trace_info = malloc(sizeof(trace_t));
1266                                 (*last_target_p)->trace_info->num_trace_points = 0;
1267                                 (*last_target_p)->trace_info->trace_points_size = 0;
1268                                 (*last_target_p)->trace_info->trace_points = NULL;
1269                                 (*last_target_p)->trace_info->trace_history_size = 0;
1270                                 (*last_target_p)->trace_info->trace_history = NULL;
1271                                 (*last_target_p)->trace_info->trace_history_pos = 0;
1272                                 (*last_target_p)->trace_info->trace_history_overflowed = 0;
1273
1274                                 (*last_target_p)->dbgmsg = NULL;
1275                                 (*last_target_p)->dbg_msg_enabled = 0;
1276
1277                                 (*last_target_p)->type->target_command(cmd_ctx, cmd, args, argc, *last_target_p);
1278
1279                                 found = 1;
1280                                 break;
1281                         }
1282                 }
1283         }
1284
1285         /* no matching target found */
1286         if (!found)
1287         {
1288                 LOG_ERROR("target '%s' not found", args[0]);
1289                 return ERROR_COMMAND_SYNTAX_ERROR;
1290         }
1291
1292         return ERROR_OK;
1293 }
1294
1295 /* usage: target_script <target#> <event> <script_file> */
1296 int handle_target_script_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1297 {
1298         target_t *target = NULL;
1299
1300         if (argc < 3)
1301         {
1302                 LOG_ERROR("incomplete target_script command");
1303                 return ERROR_COMMAND_SYNTAX_ERROR;
1304         }
1305
1306         target = get_target_by_num(strtoul(args[0], NULL, 0));
1307
1308         if (!target)
1309         {
1310                 return ERROR_COMMAND_SYNTAX_ERROR;
1311         }
1312
1313         if (strcmp(args[1], "reset") == 0)
1314         {
1315                 if (target->reset_script)
1316                         free(target->reset_script);
1317                 target->reset_script = strdup(args[2]);
1318         }
1319         else if (strcmp(args[1], "post_halt") == 0)
1320         {
1321                 if (target->post_halt_script)
1322                         free(target->post_halt_script);
1323                 target->post_halt_script = strdup(args[2]);
1324         }
1325         else if (strcmp(args[1], "pre_resume") == 0)
1326         {
1327                 if (target->pre_resume_script)
1328                         free(target->pre_resume_script);
1329                 target->pre_resume_script = strdup(args[2]);
1330         }
1331         else if (strcmp(args[1], "gdb_program_config") == 0)
1332         {
1333                 if (target->gdb_program_script)
1334                         free(target->gdb_program_script);
1335                 target->gdb_program_script = strdup(args[2]);
1336         }
1337         else
1338         {
1339                 LOG_ERROR("unknown event type: '%s", args[1]);
1340                 return ERROR_COMMAND_SYNTAX_ERROR;
1341         }
1342
1343         return ERROR_OK;
1344 }
1345
1346 int handle_run_and_halt_time_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1347 {
1348         target_t *target = NULL;
1349
1350         if (argc < 2)
1351         {
1352                 return ERROR_COMMAND_SYNTAX_ERROR;
1353         }
1354
1355         target = get_target_by_num(strtoul(args[0], NULL, 0));
1356         if (!target)
1357         {
1358                 return ERROR_COMMAND_SYNTAX_ERROR;
1359         }
1360
1361         target->run_and_halt_time = strtoul(args[1], NULL, 0);
1362
1363         return ERROR_OK;
1364 }
1365
1366 int handle_working_area_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1367 {
1368         target_t *target = NULL;
1369
1370         if ((argc < 4) || (argc > 5))
1371         {
1372                 return ERROR_COMMAND_SYNTAX_ERROR;
1373         }
1374
1375         target = get_target_by_num(strtoul(args[0], NULL, 0));
1376         if (!target)
1377         {
1378                 return ERROR_COMMAND_SYNTAX_ERROR;
1379         }
1380         target_free_all_working_areas(target);
1381
1382         target->working_area_phys = target->working_area_virt = strtoul(args[1], NULL, 0);
1383         if (argc == 5)
1384         {
1385                 target->working_area_virt = strtoul(args[4], NULL, 0);
1386         }
1387         target->working_area_size = strtoul(args[2], NULL, 0);
1388
1389         if (strcmp(args[3], "backup") == 0)
1390         {
1391                 target->backup_working_area = 1;
1392         }
1393         else if (strcmp(args[3], "nobackup") == 0)
1394         {
1395                 target->backup_working_area = 0;
1396         }
1397         else
1398         {
1399                 LOG_ERROR("unrecognized <backup|nobackup> argument (%s)", args[3]);
1400                 return ERROR_COMMAND_SYNTAX_ERROR;
1401         }
1402
1403         return ERROR_OK;
1404 }
1405
1406
1407 /* process target state changes */
1408 int handle_target(void *priv)
1409 {
1410         int retval;
1411         target_t *target = targets;
1412
1413         while (target)
1414         {
1415                 /* only poll if target isn't already halted */
1416                 if (target->state != TARGET_HALTED)
1417                 {
1418                         if (target_continous_poll)
1419                                 if ((retval = target->type->poll(target)) != ERROR_OK)
1420                                 {
1421                                         LOG_ERROR("couldn't poll target(%d). It's due for a reset.", retval);
1422                                 }
1423                 }
1424
1425                 target = target->next;
1426         }
1427
1428         return ERROR_OK;
1429 }
1430
1431 int handle_reg_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1432 {
1433         target_t *target;
1434         reg_t *reg = NULL;
1435         int count = 0;
1436         char *value;
1437
1438         LOG_DEBUG("-");
1439
1440         target = get_current_target(cmd_ctx);
1441
1442         /* list all available registers for the current target */
1443         if (argc == 0)
1444         {
1445                 reg_cache_t *cache = target->reg_cache;
1446
1447                 count = 0;
1448                 while(cache)
1449                 {
1450                         int i;
1451                         for (i = 0; i < cache->num_regs; i++)
1452                         {
1453                                 value = buf_to_str(cache->reg_list[i].value, cache->reg_list[i].size, 16);
1454                                 command_print(cmd_ctx, "(%i) %s (/%i): 0x%s (dirty: %i, valid: %i)", count++, cache->reg_list[i].name, cache->reg_list[i].size, value, cache->reg_list[i].dirty, cache->reg_list[i].valid);
1455                                 free(value);
1456                         }
1457                         cache = cache->next;
1458                 }
1459
1460                 return ERROR_OK;
1461         }
1462
1463         /* access a single register by its ordinal number */
1464         if ((args[0][0] >= '0') && (args[0][0] <= '9'))
1465         {
1466                 int num = strtoul(args[0], NULL, 0);
1467                 reg_cache_t *cache = target->reg_cache;
1468
1469                 count = 0;
1470                 while(cache)
1471                 {
1472                         int i;
1473                         for (i = 0; i < cache->num_regs; i++)
1474                         {
1475                                 if (count++ == num)
1476                                 {
1477                                         reg = &cache->reg_list[i];
1478                                         break;
1479                                 }
1480                         }
1481                         if (reg)
1482                                 break;
1483                         cache = cache->next;
1484                 }
1485
1486                 if (!reg)
1487                 {
1488                         command_print(cmd_ctx, "%i is out of bounds, the current target has only %i registers (0 - %i)", num, count, count - 1);
1489                         return ERROR_OK;
1490                 }
1491         } else /* access a single register by its name */
1492         {
1493                 reg = register_get_by_name(target->reg_cache, args[0], 1);
1494
1495                 if (!reg)
1496                 {
1497                         command_print(cmd_ctx, "register %s not found in current target", args[0]);
1498                         return ERROR_OK;
1499                 }
1500         }
1501
1502         /* display a register */
1503         if ((argc == 1) || ((argc == 2) && !((args[1][0] >= '0') && (args[1][0] <= '9'))))
1504         {
1505                 if ((argc == 2) && (strcmp(args[1], "force") == 0))
1506                         reg->valid = 0;
1507
1508                 if (reg->valid == 0)
1509                 {
1510                         reg_arch_type_t *arch_type = register_get_arch_type(reg->arch_type);
1511                         if (arch_type == NULL)
1512                         {
1513                                 LOG_ERROR("BUG: encountered unregistered arch type");
1514                                 return ERROR_OK;
1515                         }
1516                         arch_type->get(reg);
1517                 }
1518                 value = buf_to_str(reg->value, reg->size, 16);
1519                 command_print(cmd_ctx, "%s (/%i): 0x%s", reg->name, reg->size, value);
1520                 free(value);
1521                 return ERROR_OK;
1522         }
1523
1524         /* set register value */
1525         if (argc == 2)
1526         {
1527                 u8 *buf = malloc(CEIL(reg->size, 8));
1528                 str_to_buf(args[1], strlen(args[1]), buf, reg->size, 0);
1529
1530                 reg_arch_type_t *arch_type = register_get_arch_type(reg->arch_type);
1531                 if (arch_type == NULL)
1532                 {
1533                         LOG_ERROR("BUG: encountered unregistered arch type");
1534                         return ERROR_OK;
1535                 }
1536
1537                 arch_type->set(reg, buf);
1538
1539                 value = buf_to_str(reg->value, reg->size, 16);
1540                 command_print(cmd_ctx, "%s (/%i): 0x%s", reg->name, reg->size, value);
1541                 free(value);
1542
1543                 free(buf);
1544
1545                 return ERROR_OK;
1546         }
1547
1548         command_print(cmd_ctx, "usage: reg <#|name> [value]");
1549
1550         return ERROR_OK;
1551 }
1552
1553 static int wait_state(struct command_context_s *cmd_ctx, char *cmd, enum target_state state, int ms);
1554
1555 int handle_poll_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1556 {
1557         target_t *target = get_current_target(cmd_ctx);
1558
1559         if (argc == 0)
1560         {
1561                 target->type->poll(target);
1562                 target_arch_state(target);
1563         }
1564         else
1565         {
1566                 if (strcmp(args[0], "on") == 0)
1567                 {
1568                         target_continous_poll = 1;
1569                 }
1570                 else if (strcmp(args[0], "off") == 0)
1571                 {
1572                         target_continous_poll = 0;
1573                 }
1574                 else
1575                 {
1576                         command_print(cmd_ctx, "arg is \"on\" or \"off\"");
1577                 }
1578         }
1579
1580
1581         return ERROR_OK;
1582 }
1583
1584 int handle_wait_halt_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1585 {
1586         int ms = 5000;
1587
1588         if (argc > 0)
1589         {
1590                 char *end;
1591
1592                 ms = strtoul(args[0], &end, 0) * 1000;
1593                 if (*end)
1594                 {
1595                         command_print(cmd_ctx, "usage: %s [seconds]", cmd);
1596                         return ERROR_OK;
1597                 }
1598         }
1599
1600         return wait_state(cmd_ctx, cmd, TARGET_HALTED, ms);
1601 }
1602
1603 static void target_process_events(struct command_context_s *cmd_ctx)
1604 {
1605         target_t *target = get_current_target(cmd_ctx);
1606         target->type->poll(target);
1607         target_call_timer_callbacks_now();
1608 }
1609
1610 static int wait_state(struct command_context_s *cmd_ctx, char *cmd, enum target_state state, int ms)
1611 {
1612         int retval;
1613         struct timeval timeout, now;
1614         int once=1;
1615         gettimeofday(&timeout, NULL);
1616         timeval_add_time(&timeout, 0, ms * 1000);
1617
1618         target_t *target = get_current_target(cmd_ctx);
1619         for (;;)
1620         {
1621                 if ((retval=target->type->poll(target))!=ERROR_OK)
1622                         return retval;
1623                 target_call_timer_callbacks_now();
1624                 if (target->state == state)
1625                 {
1626                         break;
1627                 }
1628                 if (once)
1629                 {
1630                         once=0;
1631                         command_print(cmd_ctx, "waiting for target %s...", target_state_strings[state]);
1632                 }
1633
1634                 gettimeofday(&now, NULL);
1635                 if ((now.tv_sec > timeout.tv_sec) || ((now.tv_sec == timeout.tv_sec) && (now.tv_usec >= timeout.tv_usec)))
1636                 {
1637                         LOG_ERROR("timed out while waiting for target %s", target_state_strings[state]);
1638                         break;
1639                 }
1640         }
1641
1642         return ERROR_OK;
1643 }
1644
1645 int handle_halt_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1646 {
1647         int retval;
1648         target_t *target = get_current_target(cmd_ctx);
1649
1650         LOG_DEBUG("-");
1651
1652         if ((retval = target->type->halt(target)) != ERROR_OK)
1653         {
1654                 return retval;
1655         }
1656
1657         return handle_wait_halt_command(cmd_ctx, cmd, args, argc);
1658 }
1659
1660
1661 int handle_soft_reset_halt_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1662 {
1663         target_t *target = get_current_target(cmd_ctx);
1664
1665         LOG_USER("requesting target halt and executing a soft reset");
1666
1667         target->type->soft_reset_halt(target);
1668
1669         return ERROR_OK;
1670 }
1671
1672 int handle_reset_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1673 {
1674         target_t *target = get_current_target(cmd_ctx);
1675         enum target_reset_mode reset_mode = target->reset_mode;
1676         enum target_reset_mode save = target->reset_mode;
1677
1678         LOG_DEBUG("-");
1679
1680         if (argc >= 1)
1681         {
1682                 if (strcmp("run", args[0]) == 0)
1683                         reset_mode = RESET_RUN;
1684                 else if (strcmp("halt", args[0]) == 0)
1685                         reset_mode = RESET_HALT;
1686                 else if (strcmp("init", args[0]) == 0)
1687                         reset_mode = RESET_INIT;
1688                 else if (strcmp("run_and_halt", args[0]) == 0)
1689                 {
1690                         reset_mode = RESET_RUN_AND_HALT;
1691                         if (argc >= 2)
1692                         {
1693                                 target->run_and_halt_time = strtoul(args[1], NULL, 0);
1694                         }
1695                 }
1696                 else if (strcmp("run_and_init", args[0]) == 0)
1697                 {
1698                         reset_mode = RESET_RUN_AND_INIT;
1699                         if (argc >= 2)
1700                         {
1701                                 target->run_and_halt_time = strtoul(args[1], NULL, 0);
1702                         }
1703                 }
1704                 else
1705                 {
1706                         command_print(cmd_ctx, "usage: reset ['run', 'halt', 'init', 'run_and_halt', 'run_and_init]");
1707                         return ERROR_OK;
1708                 }
1709         }
1710
1711         /* temporarily modify mode of current reset target */
1712         target->reset_mode = reset_mode;
1713
1714         /* reset *all* targets */
1715         target_process_reset(cmd_ctx);
1716
1717         /* Restore default reset mode for this target */
1718     target->reset_mode = save;
1719
1720         return ERROR_OK;
1721 }
1722
1723 int handle_resume_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1724 {
1725         int retval;
1726         target_t *target = get_current_target(cmd_ctx);
1727
1728         if (argc == 0)
1729                 retval = target->type->resume(target, 1, 0, 1, 0); /* current pc, addr = 0, handle breakpoints, not debugging */
1730         else if (argc == 1)
1731                 retval = target->type->resume(target, 0, strtoul(args[0], NULL, 0), 1, 0); /* addr = args[0], handle breakpoints, not debugging */
1732         else
1733         {
1734                 return ERROR_COMMAND_SYNTAX_ERROR;
1735         }
1736
1737         target_process_events(cmd_ctx);
1738
1739         return retval;
1740 }
1741
1742 int handle_step_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1743 {
1744         target_t *target = get_current_target(cmd_ctx);
1745
1746         LOG_DEBUG("-");
1747
1748         if (argc == 0)
1749                 target->type->step(target, 1, 0, 1); /* current pc, addr = 0, handle breakpoints */
1750
1751         if (argc == 1)
1752                 target->type->step(target, 0, strtoul(args[0], NULL, 0), 1); /* addr = args[0], handle breakpoints */
1753
1754         return ERROR_OK;
1755 }
1756
1757 int handle_md_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1758 {
1759         const int line_bytecnt = 32;
1760         int count = 1;
1761         int size = 4;
1762         u32 address = 0;
1763         int line_modulo;
1764         int i;
1765
1766         char output[128];
1767         int output_len;
1768
1769         int retval;
1770
1771         u8 *buffer;
1772         target_t *target = get_current_target(cmd_ctx);
1773
1774         if (argc < 1)
1775                 return ERROR_OK;
1776
1777         if (argc == 2)
1778                 count = strtoul(args[1], NULL, 0);
1779
1780         address = strtoul(args[0], NULL, 0);
1781
1782
1783         switch (cmd[2])
1784         {
1785                 case 'w':
1786                         size = 4; line_modulo = line_bytecnt / 4;
1787                         break;
1788                 case 'h':
1789                         size = 2; line_modulo = line_bytecnt / 2;
1790                         break;
1791                 case 'b':
1792                         size = 1; line_modulo = line_bytecnt / 1;
1793                         break;
1794                 default:
1795                         return ERROR_OK;
1796         }
1797
1798         buffer = calloc(count, size);
1799         retval  = target->type->read_memory(target, address, size, count, buffer);
1800         if (retval == ERROR_OK)
1801         {
1802                 output_len = 0;
1803
1804                 for (i = 0; i < count; i++)
1805                 {
1806                         if (i%line_modulo == 0)
1807                                 output_len += snprintf(output + output_len, 128 - output_len, "0x%8.8x: ", address + (i*size));
1808
1809                         switch (size)
1810                         {
1811                                 case 4:
1812                                         output_len += snprintf(output + output_len, 128 - output_len, "%8.8x ", target_buffer_get_u32(target, &buffer[i*4]));
1813                                         break;
1814                                 case 2:
1815                                         output_len += snprintf(output + output_len, 128 - output_len, "%4.4x ", target_buffer_get_u16(target, &buffer[i*2]));
1816                                         break;
1817                                 case 1:
1818                                         output_len += snprintf(output + output_len, 128 - output_len, "%2.2x ", buffer[i*1]);
1819                                         break;
1820                         }
1821
1822                         if ((i%line_modulo == line_modulo-1) || (i == count - 1))
1823                         {
1824                                 command_print(cmd_ctx, output);
1825                                 output_len = 0;
1826                         }
1827                 }
1828         } else
1829         {
1830                 LOG_ERROR("Failure examining memory");
1831         }
1832
1833         free(buffer);
1834
1835         return ERROR_OK;
1836 }
1837
1838 int handle_mw_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1839 {
1840         u32 address = 0;
1841         u32 value = 0;
1842         int count = 1;
1843         int i;
1844         int wordsize;
1845         target_t *target = get_current_target(cmd_ctx);
1846         u8 value_buf[4];
1847
1848          if ((argc < 2) || (argc > 3))
1849                 return ERROR_COMMAND_SYNTAX_ERROR;
1850
1851         address = strtoul(args[0], NULL, 0);
1852         value = strtoul(args[1], NULL, 0);
1853         if (argc == 3)
1854                 count = strtoul(args[2], NULL, 0);
1855
1856
1857         switch (cmd[2])
1858         {
1859                 case 'w':
1860                         wordsize = 4;
1861                         target_buffer_set_u32(target, value_buf, value);
1862                         break;
1863                 case 'h':
1864                         wordsize = 2;
1865                         target_buffer_set_u16(target, value_buf, value);
1866                         break;
1867                 case 'b':
1868                         wordsize = 1;
1869                         value_buf[0] = value;
1870                         break;
1871                 default:
1872                         return ERROR_COMMAND_SYNTAX_ERROR;
1873         }
1874         for (i=0; i<count; i++)
1875         {
1876                 int retval;
1877                 switch (wordsize)
1878                 {
1879                         case 4:
1880                                 retval = target->type->write_memory(target, address + i*wordsize, 4, 1, value_buf);
1881                                 break;
1882                         case 2:
1883                                 retval = target->type->write_memory(target, address + i*wordsize, 2, 1, value_buf);
1884                                 break;
1885                         case 1:
1886                                 retval = target->type->write_memory(target, address + i*wordsize, 1, 1, value_buf);
1887                         break;
1888                         default:
1889                         return ERROR_OK;
1890                 }
1891                 if (retval!=ERROR_OK)
1892                 {
1893                         return retval;
1894                 }
1895         }
1896
1897         return ERROR_OK;
1898
1899 }
1900
1901 int handle_load_image_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1902 {
1903         u8 *buffer;
1904         u32 buf_cnt;
1905         u32 image_size;
1906         int i;
1907         int retval;
1908
1909         image_t image;
1910
1911         duration_t duration;
1912         char *duration_text;
1913
1914         target_t *target = get_current_target(cmd_ctx);
1915
1916         if (argc < 1)
1917         {
1918                 command_print(cmd_ctx, "usage: load_image <filename> [address] [type]");
1919                 return ERROR_OK;
1920         }
1921
1922         /* a base address isn't always necessary, default to 0x0 (i.e. don't relocate) */
1923         if (argc >= 2)
1924         {
1925                 image.base_address_set = 1;
1926                 image.base_address = strtoul(args[1], NULL, 0);
1927         }
1928         else
1929         {
1930                 image.base_address_set = 0;
1931         }
1932
1933         image.start_address_set = 0;
1934
1935         duration_start_measure(&duration);
1936
1937         if (image_open(&image, args[0], (argc >= 3) ? args[2] : NULL) != ERROR_OK)
1938         {
1939                 return ERROR_OK;
1940         }
1941
1942         image_size = 0x0;
1943         retval = ERROR_OK;
1944         for (i = 0; i < image.num_sections; i++)
1945         {
1946                 buffer = malloc(image.sections[i].size);
1947                 if (buffer == NULL)
1948                 {
1949                         command_print(cmd_ctx, "error allocating buffer for section (%d bytes)", image.sections[i].size);
1950                         break;
1951                 }
1952
1953                 if ((retval = image_read_section(&image, i, 0x0, image.sections[i].size, buffer, &buf_cnt)) != ERROR_OK)
1954                 {
1955                         free(buffer);
1956                         break;
1957                 }
1958                 if ((retval = target_write_buffer(target, image.sections[i].base_address, buf_cnt, buffer)) != ERROR_OK)
1959                 {
1960                         free(buffer);
1961                         break;
1962                 }
1963                 image_size += buf_cnt;
1964                 command_print(cmd_ctx, "%u byte written at address 0x%8.8x", buf_cnt, image.sections[i].base_address);
1965
1966                 free(buffer);
1967         }
1968
1969         duration_stop_measure(&duration, &duration_text);
1970         if (retval==ERROR_OK)
1971         {
1972                 command_print(cmd_ctx, "downloaded %u byte in %s", image_size, duration_text);
1973         }
1974         free(duration_text);
1975
1976         image_close(&image);
1977
1978         return retval;
1979
1980 }
1981
1982 int handle_dump_image_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1983 {
1984         fileio_t fileio;
1985
1986         u32 address;
1987         u32 size;
1988         u8 buffer[560];
1989         int retval=ERROR_OK;
1990
1991         duration_t duration;
1992         char *duration_text;
1993
1994         target_t *target = get_current_target(cmd_ctx);
1995
1996         if (argc != 3)
1997         {
1998                 command_print(cmd_ctx, "usage: dump_image <filename> <address> <size>");
1999                 return ERROR_OK;
2000         }
2001
2002         address = strtoul(args[1], NULL, 0);
2003         size = strtoul(args[2], NULL, 0);
2004
2005         if ((address & 3) || (size & 3))
2006         {
2007                 command_print(cmd_ctx, "only 32-bit aligned address and size are supported");
2008                 return ERROR_OK;
2009         }
2010
2011         if (fileio_open(&fileio, args[0], FILEIO_WRITE, FILEIO_BINARY) != ERROR_OK)
2012         {
2013                 return ERROR_OK;
2014         }
2015
2016         duration_start_measure(&duration);
2017
2018         while (size > 0)
2019         {
2020                 u32 size_written;
2021                 u32 this_run_size = (size > 560) ? 560 : size;
2022
2023                 retval = target->type->read_memory(target, address, 4, this_run_size / 4, buffer);
2024                 if (retval != ERROR_OK)
2025                 {
2026                         break;
2027                 }
2028
2029                 retval = fileio_write(&fileio, this_run_size, buffer, &size_written);
2030                 if (retval != ERROR_OK)
2031                 {
2032                         break;
2033                 }
2034
2035                 size -= this_run_size;
2036                 address += this_run_size;
2037         }
2038
2039         fileio_close(&fileio);
2040
2041         duration_stop_measure(&duration, &duration_text);
2042         if (retval==ERROR_OK)
2043         {
2044                 command_print(cmd_ctx, "dumped %"PRIi64" byte in %s", fileio.size, duration_text);
2045         }
2046         free(duration_text);
2047
2048         return ERROR_OK;
2049 }
2050
2051 int handle_verify_image_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2052 {
2053         u8 *buffer;
2054         u32 buf_cnt;
2055         u32 image_size;
2056         int i;
2057         int retval;
2058         u32 checksum = 0;
2059         u32 mem_checksum = 0;
2060
2061         image_t image;
2062
2063         duration_t duration;
2064         char *duration_text;
2065
2066         target_t *target = get_current_target(cmd_ctx);
2067
2068         if (argc < 1)
2069         {
2070                 return ERROR_COMMAND_SYNTAX_ERROR;
2071         }
2072
2073         if (!target)
2074         {
2075                 LOG_ERROR("no target selected");
2076                 return ERROR_FAIL;
2077         }
2078
2079         duration_start_measure(&duration);
2080
2081         if (argc >= 2)
2082         {
2083                 image.base_address_set = 1;
2084                 image.base_address = strtoul(args[1], NULL, 0);
2085         }
2086         else
2087         {
2088                 image.base_address_set = 0;
2089                 image.base_address = 0x0;
2090         }
2091
2092         image.start_address_set = 0;
2093
2094         if ((retval=image_open(&image, args[0], (argc == 3) ? args[2] : NULL)) != ERROR_OK)
2095         {
2096                 return retval;
2097         }
2098
2099         image_size = 0x0;
2100         retval=ERROR_OK;
2101         for (i = 0; i < image.num_sections; i++)
2102         {
2103                 buffer = malloc(image.sections[i].size);
2104                 if (buffer == NULL)
2105                 {
2106                         command_print(cmd_ctx, "error allocating buffer for section (%d bytes)", image.sections[i].size);
2107                         break;
2108                 }
2109                 if ((retval = image_read_section(&image, i, 0x0, image.sections[i].size, buffer, &buf_cnt)) != ERROR_OK)
2110                 {
2111                         free(buffer);
2112                         break;
2113                 }
2114
2115                 /* calculate checksum of image */
2116                 image_calculate_checksum( buffer, buf_cnt, &checksum );
2117
2118                 retval = target_checksum_memory(target, image.sections[i].base_address, buf_cnt, &mem_checksum);
2119                 if( retval != ERROR_OK )
2120                 {
2121                         free(buffer);
2122                         break;
2123                 }
2124
2125                 if( checksum != mem_checksum )
2126                 {
2127                         /* failed crc checksum, fall back to a binary compare */
2128                         u8 *data;
2129
2130                         command_print(cmd_ctx, "checksum mismatch - attempting binary compare");
2131
2132                         data = (u8*)malloc(buf_cnt);
2133
2134                         /* Can we use 32bit word accesses? */
2135                         int size = 1;
2136                         int count = buf_cnt;
2137                         if ((count % 4) == 0)
2138                         {
2139                                 size *= 4;
2140                                 count /= 4;
2141                         }
2142                         retval = target->type->read_memory(target, image.sections[i].base_address, size, count, data);
2143                         if (retval == ERROR_OK)
2144                         {
2145                                 int t;
2146                                 for (t = 0; t < buf_cnt; t++)
2147                                 {
2148                                         if (data[t] != buffer[t])
2149                                         {
2150                                                 command_print(cmd_ctx, "Verify operation failed address 0x%08x. Was 0x%02x instead of 0x%02x\n", t + image.sections[i].base_address, data[t], buffer[t]);
2151                                                 free(data);
2152                                                 free(buffer);
2153                                                 retval=ERROR_FAIL;
2154                                                 goto done;
2155                                         }
2156                                 }
2157                         }
2158
2159                         free(data);
2160                 }
2161
2162                 free(buffer);
2163                 image_size += buf_cnt;
2164         }
2165 done:
2166         duration_stop_measure(&duration, &duration_text);
2167         if (retval==ERROR_OK)
2168         {
2169                 command_print(cmd_ctx, "verified %u bytes in %s", image_size, duration_text);
2170         }
2171         free(duration_text);
2172
2173         image_close(&image);
2174
2175         return retval;
2176 }
2177
2178 int handle_bp_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2179 {
2180         int retval;
2181         target_t *target = get_current_target(cmd_ctx);
2182
2183         if (argc == 0)
2184         {
2185                 breakpoint_t *breakpoint = target->breakpoints;
2186
2187                 while (breakpoint)
2188                 {
2189                         if (breakpoint->type == BKPT_SOFT)
2190                         {
2191                                 char* buf = buf_to_str(breakpoint->orig_instr, breakpoint->length, 16);
2192                                 command_print(cmd_ctx, "0x%8.8x, 0x%x, %i, 0x%s", breakpoint->address, breakpoint->length, breakpoint->set, buf);
2193                                 free(buf);
2194                         }
2195                         else
2196                         {
2197                                 command_print(cmd_ctx, "0x%8.8x, 0x%x, %i", breakpoint->address, breakpoint->length, breakpoint->set);
2198                         }
2199                         breakpoint = breakpoint->next;
2200                 }
2201         }
2202         else if (argc >= 2)
2203         {
2204                 int hw = BKPT_SOFT;
2205                 u32 length = 0;
2206
2207                 length = strtoul(args[1], NULL, 0);
2208
2209                 if (argc >= 3)
2210                         if (strcmp(args[2], "hw") == 0)
2211                                 hw = BKPT_HARD;
2212
2213                 if ((retval = breakpoint_add(target, strtoul(args[0], NULL, 0), length, hw)) != ERROR_OK)
2214                 {
2215                         LOG_ERROR("Failure setting breakpoints");
2216                 }
2217                 else
2218                 {
2219                         command_print(cmd_ctx, "breakpoint added at address 0x%8.8x", strtoul(args[0], NULL, 0));
2220                 }
2221         }
2222         else
2223         {
2224                 command_print(cmd_ctx, "usage: bp <address> <length> ['hw']");
2225         }
2226
2227         return ERROR_OK;
2228 }
2229
2230 int handle_rbp_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2231 {
2232         target_t *target = get_current_target(cmd_ctx);
2233
2234         if (argc > 0)
2235                 breakpoint_remove(target, strtoul(args[0], NULL, 0));
2236
2237         return ERROR_OK;
2238 }
2239
2240 int handle_wp_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2241 {
2242         target_t *target = get_current_target(cmd_ctx);
2243         int retval;
2244
2245         if (argc == 0)
2246         {
2247                 watchpoint_t *watchpoint = target->watchpoints;
2248
2249                 while (watchpoint)
2250                 {
2251                         command_print(cmd_ctx, "address: 0x%8.8x, mask: 0x%8.8x, r/w/a: %i, value: 0x%8.8x, mask: 0x%8.8x", watchpoint->address, watchpoint->length, watchpoint->rw, watchpoint->value, watchpoint->mask);
2252                         watchpoint = watchpoint->next;
2253                 }
2254         }
2255         else if (argc >= 2)
2256         {
2257                 enum watchpoint_rw type = WPT_ACCESS;
2258                 u32 data_value = 0x0;
2259                 u32 data_mask = 0xffffffff;
2260
2261                 if (argc >= 3)
2262                 {
2263                         switch(args[2][0])
2264                         {
2265                                 case 'r':
2266                                         type = WPT_READ;
2267                                         break;
2268                                 case 'w':
2269                                         type = WPT_WRITE;
2270                                         break;
2271                                 case 'a':
2272                                         type = WPT_ACCESS;
2273                                         break;
2274                                 default:
2275                                         command_print(cmd_ctx, "usage: wp <address> <length> [r/w/a] [value] [mask]");
2276                                         return ERROR_OK;
2277                         }
2278                 }
2279                 if (argc >= 4)
2280                 {
2281                         data_value = strtoul(args[3], NULL, 0);
2282                 }
2283                 if (argc >= 5)
2284                 {
2285                         data_mask = strtoul(args[4], NULL, 0);
2286                 }
2287
2288                 if ((retval = watchpoint_add(target, strtoul(args[0], NULL, 0),
2289                                 strtoul(args[1], NULL, 0), type, data_value, data_mask)) != ERROR_OK)
2290                 {
2291                         LOG_ERROR("Failure setting breakpoints");
2292                 }
2293         }
2294         else
2295         {
2296                 command_print(cmd_ctx, "usage: wp <address> <length> [r/w/a] [value] [mask]");
2297         }
2298
2299         return ERROR_OK;
2300 }
2301
2302 int handle_rwp_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2303 {
2304         target_t *target = get_current_target(cmd_ctx);
2305
2306         if (argc > 0)
2307                 watchpoint_remove(target, strtoul(args[0], NULL, 0));
2308
2309         return ERROR_OK;
2310 }
2311
2312 int handle_virt2phys_command(command_context_t *cmd_ctx, char *cmd, char **args, int argc)
2313 {
2314         int retval;
2315         target_t *target = get_current_target(cmd_ctx);
2316         u32 va;
2317         u32 pa;
2318
2319         if (argc != 1)
2320         {
2321                 return ERROR_COMMAND_SYNTAX_ERROR;
2322         }
2323         va = strtoul(args[0], NULL, 0);
2324
2325         retval = target->type->virt2phys(target, va, &pa);
2326         if (retval == ERROR_OK)
2327         {
2328                 command_print(cmd_ctx, "Physical address 0x%08x", pa);
2329         }
2330         else
2331         {
2332                 /* lower levels will have logged a detailed error which is
2333                  * forwarded to telnet/GDB session.
2334                  */
2335         }
2336         return retval;
2337 }
2338 static void writeLong(FILE *f, int l)
2339 {
2340         int i;
2341         for (i=0; i<4; i++)
2342         {
2343                 char c=(l>>(i*8))&0xff;
2344                 fwrite(&c, 1, 1, f);
2345         }
2346
2347 }
2348 static void writeString(FILE *f, char *s)
2349 {
2350         fwrite(s, 1, strlen(s), f);
2351 }
2352
2353
2354
2355 // Dump a gmon.out histogram file.
2356 static void writeGmon(u32 *samples, int sampleNum, char *filename)
2357 {
2358         int i;
2359         FILE *f=fopen(filename, "w");
2360         if (f==NULL)
2361                 return;
2362         fwrite("gmon", 1, 4, f);
2363         writeLong(f, 0x00000001); // Version
2364         writeLong(f, 0); // padding
2365         writeLong(f, 0); // padding
2366         writeLong(f, 0); // padding
2367
2368         fwrite("", 1, 1, f);  // GMON_TAG_TIME_HIST
2369
2370         // figure out bucket size
2371         u32 min=samples[0];
2372         u32 max=samples[0];
2373         for (i=0; i<sampleNum; i++)
2374         {
2375                 if (min>samples[i])
2376                 {
2377                         min=samples[i];
2378                 }
2379                 if (max<samples[i])
2380                 {
2381                         max=samples[i];
2382                 }
2383         }
2384
2385         int addressSpace=(max-min+1);
2386
2387         static int const maxBuckets=256*1024; // maximum buckets.
2388         int length=addressSpace;
2389         if (length > maxBuckets)
2390         {
2391                 length=maxBuckets;
2392         }
2393         int *buckets=malloc(sizeof(int)*length);
2394         if (buckets==NULL)
2395         {
2396                 fclose(f);
2397                 return;
2398         }
2399         memset(buckets, 0, sizeof(int)*length);
2400         for (i=0; i<sampleNum;i++)
2401         {
2402                 u32 address=samples[i];
2403                 long long a=address-min;
2404                 long long b=length-1;
2405                 long long c=addressSpace-1;
2406                 int index=(a*b)/c; // danger!!!! int32 overflows
2407                 buckets[index]++;
2408         }
2409
2410         //                         append binary memory gmon.out &profile_hist_hdr ((char*)&profile_hist_hdr + sizeof(struct gmon_hist_hdr))
2411         writeLong(f, min);                                      // low_pc
2412         writeLong(f, max);              // high_pc
2413         writeLong(f, length);           // # of samples
2414         writeLong(f, 64000000);                         // 64MHz
2415         writeString(f, "seconds");
2416         for (i=0; i<(15-strlen("seconds")); i++)
2417         {
2418                 fwrite("", 1, 1, f);  // padding
2419         }
2420         writeString(f, "s");
2421
2422 //                         append binary memory gmon.out profile_hist_data (profile_hist_data + profile_hist_hdr.hist_size)
2423
2424         char *data=malloc(2*length);
2425         if (data!=NULL)
2426         {
2427                 for (i=0; i<length;i++)
2428                 {
2429                         int val;
2430                         val=buckets[i];
2431                         if (val>65535)
2432                         {
2433                                 val=65535;
2434                         }
2435                         data[i*2]=val&0xff;
2436                         data[i*2+1]=(val>>8)&0xff;
2437                 }
2438                 free(buckets);
2439                 fwrite(data, 1, length*2, f);
2440                 free(data);
2441         } else
2442         {
2443                 free(buckets);
2444         }
2445
2446         fclose(f);
2447 }
2448
2449 /* profiling samples the CPU PC as quickly as OpenOCD is able, which will be used as a random sampling of PC */
2450 int handle_profile_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2451 {
2452         target_t *target = get_current_target(cmd_ctx);
2453         struct timeval timeout, now;
2454
2455         gettimeofday(&timeout, NULL);
2456         if (argc!=2)
2457         {
2458                 return ERROR_COMMAND_SYNTAX_ERROR;
2459         }
2460         char *end;
2461         timeval_add_time(&timeout, strtoul(args[0], &end, 0), 0);
2462         if (*end)
2463         {
2464                 return ERROR_OK;
2465         }
2466
2467         command_print(cmd_ctx, "Starting profiling. Halting and resuming the target as often as we can...");
2468
2469         static const int maxSample=10000;
2470         u32 *samples=malloc(sizeof(u32)*maxSample);
2471         if (samples==NULL)
2472                 return ERROR_OK;
2473
2474         int numSamples=0;
2475         int retval=ERROR_OK;
2476         // hopefully it is safe to cache! We want to stop/restart as quickly as possible.
2477         reg_t *reg = register_get_by_name(target->reg_cache, "pc", 1);
2478
2479         for (;;)
2480         {
2481                 target->type->poll(target);
2482                 if (target->state == TARGET_HALTED)
2483                 {
2484                         u32 t=*((u32 *)reg->value);
2485                         samples[numSamples++]=t;
2486                         retval = target->type->resume(target, 1, 0, 0, 0); /* current pc, addr = 0, do not handle breakpoints, not debugging */
2487                         target->type->poll(target);
2488                         usleep(10*1000); // sleep 10ms, i.e. <100 samples/second.
2489                 } else if (target->state == TARGET_RUNNING)
2490                 {
2491                         // We want to quickly sample the PC.
2492                         target->type->halt(target);
2493                 } else
2494                 {
2495                         command_print(cmd_ctx, "Target not halted or running");
2496                         retval=ERROR_OK;
2497                         break;
2498                 }
2499                 if (retval!=ERROR_OK)
2500                 {
2501                         break;
2502                 }
2503
2504                 gettimeofday(&now, NULL);
2505                 if ((numSamples>=maxSample) || ((now.tv_sec >= timeout.tv_sec) && (now.tv_usec >= timeout.tv_usec)))
2506                 {
2507                         command_print(cmd_ctx, "Profiling completed. %d samples.", numSamples);
2508                         target->type->poll(target);
2509                         if (target->state == TARGET_HALTED)
2510                         {
2511                                 target->type->resume(target, 1, 0, 0, 0); /* current pc, addr = 0, do not handle breakpoints, not debugging */
2512                         }
2513                         target->type->poll(target);
2514                         writeGmon(samples, numSamples, args[1]);
2515                         command_print(cmd_ctx, "Wrote %s", args[1]);
2516                         break;
2517                 }
2518         }
2519         free(samples);
2520
2521         return ERROR_OK;
2522 }
2523