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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 int handle_target_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  53 int handle_daemon_startup_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
  78 /* targets
  79  */
  80 extern target_type_t arm7tdmi_target;
  81 extern target_type_t arm720t_target;
  82 extern target_type_t arm9tdmi_target;
  83 extern target_type_t arm920t_target;
  84 extern target_type_t arm966e_target;
  85 extern target_type_t arm926ejs_target;
  86 extern target_type_t xscale_target;
  87 extern target_type_t cortexm3_target;
  88
  89 target_type_t *target_types[] =
  90 {
  91         &arm7tdmi_target,
  92         &arm9tdmi_target,
  93         &arm920t_target,
  94         &arm720t_target,
  95         &arm966e_target,
  96         &arm926ejs_target,
  97         &xscale_target,
  98         &cortexm3_target,
  99         NULL,
 100 };
 101
 102 target_t *targets = NULL;
 103 target_event_callback_t *target_event_callbacks = NULL;
 104 target_timer_callback_t *target_timer_callbacks = NULL;
 105
 106 char *target_state_strings[] =
 107 {
 108         "unknown",
 109         "running",
 110         "halted",
 111         "reset",
 112         "debug_running",
 113 };
 114
 115 char *target_debug_reason_strings[] =
 116 {
 117         "debug request", "breakpoint", "watchpoint",
 118         "watchpoint and breakpoint", "single step",
 119         "target not halted"
 120 };
 121
 122 char *target_endianess_strings[] =
 123 {
 124         "big endian",
 125         "little endian",
 126 };
 127
 128 enum daemon_startup_mode startup_mode = DAEMON_ATTACH;
 129
 130 static int target_continous_poll = 1;
 131
 132 /* read a u32 from a buffer in target memory endianness */
 133 u32 target_buffer_get_u32(target_t *target, u8 *buffer)
 134 {
 135         if (target->endianness == TARGET_LITTLE_ENDIAN)
 136                 return le_to_h_u32(buffer);
 137         else
 138                 return be_to_h_u32(buffer);
 139 }
 140
 141 /* read a u16 from a buffer in target memory endianness */
 142 u16 target_buffer_get_u16(target_t *target, u8 *buffer)
 143 {
 144         if (target->endianness == TARGET_LITTLE_ENDIAN)
 145                 return le_to_h_u16(buffer);
 146         else
 147                 return be_to_h_u16(buffer);
 148 }
 149
 150 /* write a u32 to a buffer in target memory endianness */
 151 void target_buffer_set_u32(target_t *target, u8 *buffer, u32 value)
 152 {
 153         if (target->endianness == TARGET_LITTLE_ENDIAN)
 154                 h_u32_to_le(buffer, value);
 155         else
 156                 h_u32_to_be(buffer, value);
 157 }
 158
 159 /* write a u16 to a buffer in target memory endianness */
 160 void target_buffer_set_u16(target_t *target, u8 *buffer, u16 value)
 161 {
 162         if (target->endianness == TARGET_LITTLE_ENDIAN)
 163                 h_u16_to_le(buffer, value);
 164         else
 165                 h_u16_to_be(buffer, value);
 166 }
 167
 168 /* returns a pointer to the n-th configured target */
 169 target_t* get_target_by_num(int num)
 170 {
 171         target_t *target = targets;
 172         int i = 0;
 173
 174         while (target)
 175         {
 176                 if (num == i)
 177                         return target;
 178                 target = target->next;
 179                 i++;
 180         }
 181
 182         return NULL;
 183 }
 184
 185 int get_num_by_target(target_t *query_target)
 186 {
 187         target_t *target = targets;
 188         int i = 0;
 189
 190         while (target)
 191         {
 192                 if (target == query_target)
 193                         return i;
 194                 target = target->next;
 195                 i++;
 196         }
 197
 198         return -1;
 199 }
 200
 201 target_t* get_current_target(command_context_t *cmd_ctx)
 202 {
 203         target_t *target = get_target_by_num(cmd_ctx->current_target);
 204
 205         if (target == NULL)
 206         {
 207                 ERROR("BUG: current_target out of bounds");
 208                 exit(-1);
 209         }
 210
 211         return target;
 212 }
 213
 214 /* Process target initialization, when target entered debug out of reset
 215  * the handler is unregistered at the end of this function, so it's only called once
 216  */
 217 int target_init_handler(struct target_s *target, enum target_event event, void *priv)
 218 {
 219         FILE *script;
 220         struct command_context_s *cmd_ctx = priv;
 221
 222         if ((event == TARGET_EVENT_HALTED) && (target->reset_script))
 223         {
 224                 target_unregister_event_callback(target_init_handler, priv);
 225
 226                 script = fopen(target->reset_script, "r");
 227                 if (!script)
 228                 {
 229                         ERROR("couldn't open script file %s", target->reset_script);
 230                                 return ERROR_OK;
 231                 }
 232
 233                 INFO("executing reset script '%s'", target->reset_script);
 234                 command_run_file(cmd_ctx, script, COMMAND_EXEC);
 235                 fclose(script);
 236
 237                 jtag_execute_queue();
 238         }
 239
 240         return ERROR_OK;
 241 }
 242
 243 int target_run_and_halt_handler(void *priv)
 244 {
 245         target_t *target = priv;
 246
 247         target->type->halt(target);
 248
 249         return ERROR_OK;
 250 }
 251
 252 int target_process_reset(struct command_context_s *cmd_ctx)
 253 {
 254         int retval = ERROR_OK;
 255         target_t *target;
 256
 257         /* prepare reset_halt where necessary */
 258         target = targets;
 259         while (target)
 260         {
 261                 switch (target->reset_mode)
 262                 {
 263                         case RESET_HALT:
 264                         case RESET_INIT:
 265                                 target->type->prepare_reset_halt(target);
 266                                 break;
 267                         default:
 268                                 break;
 269                 }
 270                 target = target->next;
 271         }
 272
 273         target = targets;
 274         while (target)
 275         {
 276                 target->type->assert_reset(target);
 277                 target = target->next;
 278         }
 279         jtag_execute_queue();
 280
 281         /* request target halt if necessary, and schedule further action */
 282         target = targets;
 283         while (target)
 284         {
 285                 switch (target->reset_mode)
 286                 {
 287                         case RESET_RUN:
 288                                 /* nothing to do if target just wants to be run */
 289                                 break;
 290                         case RESET_RUN_AND_HALT:
 291                                 /* schedule halt */
 292                                 target_register_timer_callback(target_run_and_halt_handler, target->run_and_halt_time, 0, target);
 293                                 break;
 294                         case RESET_RUN_AND_INIT:
 295                                 /* schedule halt */
 296                                 target_register_timer_callback(target_run_and_halt_handler, target->run_and_halt_time, 0, target);
 297                                 target_register_event_callback(target_init_handler, cmd_ctx);
 298                                 break;
 299                         case RESET_HALT:
 300                                 target->type->halt(target);
 301                                 break;
 302                         case RESET_INIT:
 303                                 target->type->halt(target);
 304                                 target_register_event_callback(target_init_handler, cmd_ctx);
 305                                 break;
 306                         default:
 307                                 ERROR("BUG: unknown target->reset_mode");
 308                 }
 309                 target = target->next;
 310         }
 311
 312         target = targets;
 313         while (target)
 314         {
 315                 target->type->deassert_reset(target);
 316
 317                 switch (target->reset_mode)
 318                 {
 319                         case RESET_INIT:
 320                         case RESET_HALT:
 321                                 // If we're already halted, then this is harmless(reducing # of execution paths here)
 322                                 // If nSRST & nTRST are tied together then the halt during reset failed(logged) and
 323                                 // we use this as fallback(there is no other output to tell the user that reset halt
 324                                 // didn't work).
 325                                 target->type->poll(target);
 326                                 target->type->halt(target);
 327                                 break;
 328                         default:
 329                                 break;
 330                 }
 331
 332
 333                 target = target->next;
 334         }
 335         jtag_execute_queue();
 336
 337         return retval;
 338 }
 339
 340 int target_init(struct command_context_s *cmd_ctx)
 341 {
 342         target_t *target = targets;
 343
 344         while (target)
 345         {
 346                 if (target->type->init_target(cmd_ctx, target) != ERROR_OK)
 347                 {
 348                         ERROR("target '%s' init failed", target->type->name);
 349                         exit(-1);
 350                 }
 351                 target = target->next;
 352         }
 353
 354         if (targets)
 355         {
 356                 target_register_user_commands(cmd_ctx);
 357                 target_register_timer_callback(handle_target, 100, 1, NULL);
 358         }
 359
 360         if (startup_mode == DAEMON_RESET)
 361                 target_process_reset(cmd_ctx);
 362
 363         return ERROR_OK;
 364 }
 365
 366 int target_register_event_callback(int (*callback)(struct target_s *target, enum target_event event, void *priv), void *priv)
 367 {
 368         target_event_callback_t **callbacks_p = &target_event_callbacks;
 369
 370         if (callback == NULL)
 371         {
 372                 return ERROR_INVALID_ARGUMENTS;
 373         }
 374
 375         if (*callbacks_p)
 376         {
 377                 while ((*callbacks_p)->next)
 378                         callbacks_p = &((*callbacks_p)->next);
 379                 callbacks_p = &((*callbacks_p)->next);
 380         }
 381
 382         (*callbacks_p) = malloc(sizeof(target_event_callback_t));
 383         (*callbacks_p)->callback = callback;
 384         (*callbacks_p)->priv = priv;
 385         (*callbacks_p)->next = NULL;
 386
 387         return ERROR_OK;
 388 }
 389
 390 int target_register_timer_callback(int (*callback)(void *priv), int time_ms, int periodic, void *priv)
 391 {
 392         target_timer_callback_t **callbacks_p = &target_timer_callbacks;
 393         struct timeval now;
 394
 395         if (callback == NULL)
 396         {
 397                 return ERROR_INVALID_ARGUMENTS;
 398         }
 399
 400         if (*callbacks_p)
 401         {
 402                 while ((*callbacks_p)->next)
 403                         callbacks_p = &((*callbacks_p)->next);
 404                 callbacks_p = &((*callbacks_p)->next);
 405         }
 406
 407         (*callbacks_p) = malloc(sizeof(target_timer_callback_t));
 408         (*callbacks_p)->callback = callback;
 409         (*callbacks_p)->periodic = periodic;
 410         (*callbacks_p)->time_ms = time_ms;
 411
 412         gettimeofday(&now, NULL);
 413         (*callbacks_p)->when.tv_usec = now.tv_usec + (time_ms % 1000) * 1000;
 414         time_ms -= (time_ms % 1000);
 415         (*callbacks_p)->when.tv_sec = now.tv_sec + (time_ms / 1000);
 416         if ((*callbacks_p)->when.tv_usec > 1000000)
 417         {
 418                 (*callbacks_p)->when.tv_usec = (*callbacks_p)->when.tv_usec - 1000000;
 419                 (*callbacks_p)->when.tv_sec += 1;
 420         }
 421
 422         (*callbacks_p)->priv = priv;
 423         (*callbacks_p)->next = NULL;
 424
 425         return ERROR_OK;
 426 }
 427
 428 int target_unregister_event_callback(int (*callback)(struct target_s *target, enum target_event event, void *priv), void *priv)
 429 {
 430         target_event_callback_t **p = &target_event_callbacks;
 431         target_event_callback_t *c = target_event_callbacks;
 432
 433         if (callback == NULL)
 434         {
 435                 return ERROR_INVALID_ARGUMENTS;
 436         }
 437
 438         while (c)
 439         {
 440                 target_event_callback_t *next = c->next;
 441                 if ((c->callback == callback) && (c->priv == priv))
 442                 {
 443                         *p = next;
 444                         free(c);
 445                         return ERROR_OK;
 446                 }
 447                 else
 448                         p = &(c->next);
 449                 c = next;
 450         }
 451
 452         return ERROR_OK;
 453 }
 454
 455 int target_unregister_timer_callback(int (*callback)(void *priv), void *priv)
 456 {
 457         target_timer_callback_t **p = &target_timer_callbacks;
 458         target_timer_callback_t *c = target_timer_callbacks;
 459
 460         if (callback == NULL)
 461         {
 462                 return ERROR_INVALID_ARGUMENTS;
 463         }
 464
 465         while (c)
 466         {
 467                 target_timer_callback_t *next = c->next;
 468                 if ((c->callback == callback) && (c->priv == priv))
 469                 {
 470                         *p = next;
 471                         free(c);
 472                         return ERROR_OK;
 473                 }
 474                 else
 475                         p = &(c->next);
 476                 c = next;
 477         }
 478
 479         return ERROR_OK;
 480 }
 481
 482 int target_call_event_callbacks(target_t *target, enum target_event event)
 483 {
 484         target_event_callback_t *callback = target_event_callbacks;
 485         target_event_callback_t *next_callback;
 486
 487         DEBUG("target event %i", event);
 488
 489         while (callback)
 490         {
 491                 next_callback = callback->next;
 492                 callback->callback(target, event, callback->priv);
 493                 callback = next_callback;
 494         }
 495
 496         return ERROR_OK;
 497 }
 498
 499 int target_call_timer_callbacks()
 500 {
 501         target_timer_callback_t *callback = target_timer_callbacks;
 502         target_timer_callback_t *next_callback;
 503         struct timeval now;
 504
 505         gettimeofday(&now, NULL);
 506
 507         while (callback)
 508         {
 509                 next_callback = callback->next;
 510
 511                 if (((now.tv_sec >= callback->when.tv_sec) && (now.tv_usec >= callback->when.tv_usec))
 512                         || (now.tv_sec > callback->when.tv_sec))
 513                 {
 514                         callback->callback(callback->priv);
 515                         if (callback->periodic)
 516                         {
 517                                 int time_ms = callback->time_ms;
 518                                 callback->when.tv_usec = now.tv_usec + (time_ms % 1000) * 1000;
 519                                 time_ms -= (time_ms % 1000);
 520                                 callback->when.tv_sec = now.tv_sec + time_ms / 1000;
 521                                 if (callback->when.tv_usec > 1000000)
 522                                 {
 523                                         callback->when.tv_usec = callback->when.tv_usec - 1000000;
 524                                         callback->when.tv_sec += 1;
 525                                 }
 526                         }
 527                         else
 528                                 target_unregister_timer_callback(callback->callback, callback->priv);
 529                 }
 530
 531                 callback = next_callback;
 532         }
 533
 534         return ERROR_OK;
 535 }
 536
 537 int target_alloc_working_area(struct target_s *target, u32 size, working_area_t **area)
 538 {
 539         working_area_t *c = target->working_areas;
 540         working_area_t *new_wa = NULL;
 541
 542         /* only allocate multiples of 4 byte */
 543         if (size % 4)
 544         {
 545                 ERROR("BUG: code tried to allocate unaligned number of bytes, padding");
 546                 size = CEIL(size, 4);
 547         }
 548
 549         /* see if there's already a matching working area */
 550         while (c)
 551         {
 552                 if ((c->free) && (c->size == size))
 553                 {
 554                         new_wa = c;
 555                         break;
 556                 }
 557                 c = c->next;
 558         }
 559
 560         /* if not, allocate a new one */
 561         if (!new_wa)
 562         {
 563                 working_area_t **p = &target->working_areas;
 564                 u32 first_free = target->working_area;
 565                 u32 free_size = target->working_area_size;
 566
 567                 DEBUG("allocating new working area");
 568
 569                 c = target->working_areas;
 570                 while (c)
 571                 {
 572                         first_free += c->size;
 573                         free_size -= c->size;
 574                         p = &c->next;
 575                         c = c->next;
 576                 }
 577
 578                 if (free_size < size)
 579                 {
 580                         WARNING("not enough working area available");
 581                         return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
 582                 }
 583
 584                 new_wa = malloc(sizeof(working_area_t));
 585                 new_wa->next = NULL;
 586                 new_wa->size = size;
 587                 new_wa->address = first_free;
 588
 589                 if (target->backup_working_area)
 590                 {
 591                         new_wa->backup = malloc(new_wa->size);
 592                         target->type->read_memory(target, new_wa->address, 4, new_wa->size / 4, new_wa->backup);
 593                 }
 594                 else
 595                 {
 596                         new_wa->backup = NULL;
 597                 }
 598
 599                 /* put new entry in list */
 600                 *p = new_wa;
 601         }
 602
 603         /* mark as used, and return the new (reused) area */
 604         new_wa->free = 0;
 605         *area = new_wa;
 606
 607         /* user pointer */
 608         new_wa->user = area;
 609
 610         return ERROR_OK;
 611 }
 612
 613 int target_free_working_area(struct target_s *target, working_area_t *area)
 614 {
 615         if (area->free)
 616                 return ERROR_OK;
 617
 618         if (target->backup_working_area)
 619                 target->type->write_memory(target, area->address, 4, area->size / 4, area->backup);
 620
 621         area->free = 1;
 622
 623         /* mark user pointer invalid */
 624         *area->user = NULL;
 625         area->user = NULL;
 626
 627         return ERROR_OK;
 628 }
 629
 630 int target_free_all_working_areas(struct target_s *target)
 631 {
 632         working_area_t *c = target->working_areas;
 633
 634         while (c)
 635         {
 636                 working_area_t *next = c->next;
 637                 target_free_working_area(target, c);
 638
 639                 if (c->backup)
 640                         free(c->backup);
 641
 642                 free(c);
 643
 644                 c = next;
 645         }
 646
 647         target->working_areas = NULL;
 648
 649         return ERROR_OK;
 650 }
 651
 652 int target_register_commands(struct command_context_s *cmd_ctx)
 653 {
 654         register_command(cmd_ctx, NULL, "target", handle_target_command, COMMAND_CONFIG, NULL);
 655         register_command(cmd_ctx, NULL, "targets", handle_targets_command, COMMAND_EXEC, NULL);
 656         register_command(cmd_ctx, NULL, "daemon_startup", handle_daemon_startup_command, COMMAND_CONFIG, NULL);
 657         register_command(cmd_ctx, NULL, "target_script", handle_target_script_command, COMMAND_CONFIG, NULL);
 658         register_command(cmd_ctx, NULL, "run_and_halt_time", handle_run_and_halt_time_command, COMMAND_CONFIG, NULL);
 659         register_command(cmd_ctx, NULL, "working_area", handle_working_area_command, COMMAND_CONFIG, NULL);
 660
 661         return ERROR_OK;
 662 }
 663
 664 int target_write_buffer(struct target_s *target, u32 address, u32 size, u8 *buffer)
 665 {
 666         int retval;
 667
 668         DEBUG("writing buffer of %i byte at 0x%8.8x", size, address);
 669
 670         /* handle writes of less than 4 byte */
 671         if (size < 4)
 672         {
 673                 if ((retval = target->type->write_memory(target, address, 1, size, buffer)) != ERROR_OK)
 674                         return retval;
 675                 return ERROR_OK;
 676         }
 677
 678         /* handle unaligned head bytes */
 679         if (address % 4)
 680         {
 681                 int unaligned = 4 - (address % 4);
 682
 683                 if ((retval = target->type->write_memory(target, address, 1, unaligned, buffer)) != ERROR_OK)
 684                         return retval;
 685
 686                 buffer += unaligned;
 687                 address += unaligned;
 688                 size -= unaligned;
 689         }
 690
 691         /* handle aligned words */
 692         if (size >= 4)
 693         {
 694                 int aligned = size - (size % 4);
 695
 696                 /* use bulk writes above a certain limit. This may have to be changed */
 697                 if (aligned > 128)
 698                 {
 699                         if ((retval = target->type->bulk_write_memory(target, address, aligned / 4, buffer)) != ERROR_OK)
 700                                 return retval;
 701                 }
 702                 else
 703                 {
 704                         if ((retval = target->type->write_memory(target, address, 4, aligned / 4, buffer)) != ERROR_OK)
 705                                 return retval;
 706                 }
 707
 708                 buffer += aligned;
 709                 address += aligned;
 710                 size -= aligned;
 711         }
 712
 713         /* handle tail writes of less than 4 bytes */
 714         if (size > 0)
 715         {
 716                 if ((retval = target->type->write_memory(target, address, 1, size, buffer)) != ERROR_OK)
 717                         return retval;
 718         }
 719
 720         return ERROR_OK;
 721 }
 722
 723 int target_read_buffer(struct target_s *target, u32 address, u32 size, u8 *buffer)
 724 {
 725         int retval;
 726
 727         DEBUG("reading buffer of %i byte at 0x%8.8x", size, address);
 728
 729         /* handle reads of less than 4 byte */
 730         if (size < 4)
 731         {
 732                 if ((retval = target->type->read_memory(target, address, 1, size, buffer)) != ERROR_OK)
 733                         return retval;
 734                 return ERROR_OK;
 735         }
 736
 737         /* handle unaligned head bytes */
 738         if (address % 4)
 739         {
 740                 int unaligned = 4 - (address % 4);
 741
 742                 if ((retval = target->type->read_memory(target, address, 1, unaligned, buffer)) != ERROR_OK)
 743                         return retval;
 744
 745                 buffer += unaligned;
 746                 address += unaligned;
 747                 size -= unaligned;
 748         }
 749
 750         /* handle aligned words */
 751         if (size >= 4)
 752         {
 753                 int aligned = size - (size % 4);
 754
 755                 if ((retval = target->type->read_memory(target, address, 4, aligned / 4, buffer)) != ERROR_OK)
 756                         return retval;
 757
 758                 buffer += aligned;
 759                 address += aligned;
 760                 size -= aligned;
 761         }
 762
 763         /* handle tail writes of less than 4 bytes */
 764         if (size > 0)
 765         {
 766                 if ((retval = target->type->read_memory(target, address, 1, size, buffer)) != ERROR_OK)
 767                         return retval;
 768         }
 769
 770         return ERROR_OK;
 771 }
 772
 773 int target_checksum_memory(struct target_s *target, u32 address, u32 size, u32* crc)
 774 {
 775         u8 *buffer;
 776         int retval;
 777         int i;
 778         u32 checksum = 0;
 779
 780         if ((retval = target->type->checksum_memory(target, address,
 781                 size, &checksum)) == ERROR_TARGET_RESOURCE_NOT_AVAILABLE)
 782         {
 783                 buffer = malloc(size);
 784                 target_read_buffer(target, address, size, buffer);
 785
 786                 /* convert to target endianess */
 787                 for (i = 0; i < (size/sizeof(u32)); i++)
 788                 {
 789                         u32 target_data;
 790                         target_data = target_buffer_get_u32(target, &buffer[i*sizeof(u32)]);
 791                         target_buffer_set_u32(target, &buffer[i*sizeof(u32)], target_data);
 792                 }
 793
 794                 retval = image_calculate_checksum( buffer, size, &checksum );
 795                 free(buffer);
 796         }
 797
 798         *crc = checksum;
 799
 800         return retval;
 801 }
 802
 803 int target_read_u32(struct target_s *target, u32 address, u32 *value)
 804 {
 805         u8 value_buf[4];
 806
 807         int retval = target->type->read_memory(target, address, 4, 1, value_buf);
 808
 809         if (retval == ERROR_OK)
 810         {
 811                 *value = target_buffer_get_u32(target, value_buf);
 812                 DEBUG("address: 0x%8.8x, value: 0x%8.8x", address, *value);
 813         }
 814         else
 815         {
 816                 *value = 0x0;
 817                 DEBUG("address: 0x%8.8x failed", address);
 818         }
 819
 820         return retval;
 821 }
 822
 823 int target_read_u16(struct target_s *target, u32 address, u16 *value)
 824 {
 825         u8 value_buf[2];
 826
 827         int retval = target->type->read_memory(target, address, 2, 1, value_buf);
 828
 829         if (retval == ERROR_OK)
 830         {
 831                 *value = target_buffer_get_u16(target, value_buf);
 832                 DEBUG("address: 0x%8.8x, value: 0x%4.4x", address, *value);
 833         }
 834         else
 835         {
 836                 *value = 0x0;
 837                 DEBUG("address: 0x%8.8x failed", address);
 838         }
 839
 840         return retval;
 841 }
 842
 843 int target_read_u8(struct target_s *target, u32 address, u8 *value)
 844 {
 845         int retval = target->type->read_memory(target, address, 1, 1, value);
 846
 847         if (retval == ERROR_OK)
 848         {
 849                 DEBUG("address: 0x%8.8x, value: 0x%2.2x", address, *value);
 850         }
 851         else
 852         {
 853                 *value = 0x0;
 854                 DEBUG("address: 0x%8.8x failed", address);
 855         }
 856
 857         return retval;
 858 }
 859
 860 int target_write_u32(struct target_s *target, u32 address, u32 value)
 861 {
 862         int retval;
 863         u8 value_buf[4];
 864
 865         DEBUG("address: 0x%8.8x, value: 0x%8.8x", address, value);
 866
 867         target_buffer_set_u32(target, value_buf, value);
 868         if ((retval = target->type->write_memory(target, address, 4, 1, value_buf)) != ERROR_OK)
 869         {
 870                 DEBUG("failed: %i", retval);
 871         }
 872
 873         return retval;
 874 }
 875
 876 int target_write_u16(struct target_s *target, u32 address, u16 value)
 877 {
 878         int retval;
 879         u8 value_buf[2];
 880
 881         DEBUG("address: 0x%8.8x, value: 0x%8.8x", address, value);
 882
 883         target_buffer_set_u16(target, value_buf, value);
 884         if ((retval = target->type->write_memory(target, address, 2, 1, value_buf)) != ERROR_OK)
 885         {
 886                 DEBUG("failed: %i", retval);
 887         }
 888
 889         return retval;
 890 }
 891
 892 int target_write_u8(struct target_s *target, u32 address, u8 value)
 893 {
 894         int retval;
 895
 896         DEBUG("address: 0x%8.8x, value: 0x%2.2x", address, value);
 897
 898         if ((retval = target->type->read_memory(target, address, 1, 1, &value)) != ERROR_OK)
 899         {
 900                 DEBUG("failed: %i", retval);
 901         }
 902
 903         return retval;
 904 }
 905
 906 int target_register_user_commands(struct command_context_s *cmd_ctx)
 907 {
 908         register_command(cmd_ctx,  NULL, "reg", handle_reg_command, COMMAND_EXEC, NULL);
 909         register_command(cmd_ctx,  NULL, "poll", handle_poll_command, COMMAND_EXEC, "poll target state");
 910         register_command(cmd_ctx,  NULL, "wait_halt", handle_wait_halt_command, COMMAND_EXEC, "wait for target halt [time (s)]");
 911         register_command(cmd_ctx,  NULL, "halt", handle_halt_command, COMMAND_EXEC, "halt target");
 912         register_command(cmd_ctx,  NULL, "resume", handle_resume_command, COMMAND_EXEC, "resume target [addr]");
 913         register_command(cmd_ctx,  NULL, "step", handle_step_command, COMMAND_EXEC, "step one instruction from current PC or [addr]");
 914         register_command(cmd_ctx,  NULL, "reset", handle_reset_command, COMMAND_EXEC, "reset target [run|halt|init|run_and_halt|run_and_init]");
 915         register_command(cmd_ctx,  NULL, "soft_reset_halt", handle_soft_reset_halt_command, COMMAND_EXEC, "halt the target and do a soft reset");
 916
 917         register_command(cmd_ctx,  NULL, "mdw", handle_md_command, COMMAND_EXEC, "display memory words <addr> [count]");
 918         register_command(cmd_ctx,  NULL, "mdh", handle_md_command, COMMAND_EXEC, "display memory half-words <addr> [count]");
 919         register_command(cmd_ctx,  NULL, "mdb", handle_md_command, COMMAND_EXEC, "display memory bytes <addr> [count]");
 920
 921         register_command(cmd_ctx,  NULL, "mww", handle_mw_command, COMMAND_EXEC, "write memory word <addr> <value>");
 922         register_command(cmd_ctx,  NULL, "mwh", handle_mw_command, COMMAND_EXEC, "write memory half-word <addr> <value>");
 923         register_command(cmd_ctx,  NULL, "mwb", handle_mw_command, COMMAND_EXEC, "write memory byte <addr> <value>");
 924
 925         register_command(cmd_ctx,  NULL, "bp", handle_bp_command, COMMAND_EXEC, "set breakpoint <address> <length> [hw]");
 926         register_command(cmd_ctx,  NULL, "rbp", handle_rbp_command, COMMAND_EXEC, "remove breakpoint <adress>");
 927         register_command(cmd_ctx,  NULL, "wp", handle_wp_command, COMMAND_EXEC, "set watchpoint <address> <length> <r/w/a> [value] [mask]");
 928         register_command(cmd_ctx,  NULL, "rwp", handle_rwp_command, COMMAND_EXEC, "remove watchpoint <adress>");
 929
 930         register_command(cmd_ctx,  NULL, "load_image", handle_load_image_command, COMMAND_EXEC, "load_image <file> <address> ['bin'|'ihex'|'elf'|'s19']");
 931         register_command(cmd_ctx,  NULL, "dump_image", handle_dump_image_command, COMMAND_EXEC, "dump_image <file> <address> <size>");
 932         register_command(cmd_ctx,  NULL, "verify_image", handle_verify_image_command, COMMAND_EXEC, "verify_image <file> [offset] [type]");
 933         register_command(cmd_ctx,  NULL, "load_binary", handle_load_image_command, COMMAND_EXEC, "[DEPRECATED] load_binary <file> <address>");
 934         register_command(cmd_ctx,  NULL, "dump_binary", handle_dump_image_command, COMMAND_EXEC, "[DEPRECATED] dump_binary <file> <address> <size>");
 935
 936         target_request_register_commands(cmd_ctx);
 937         trace_register_commands(cmd_ctx);
 938
 939         return ERROR_OK;
 940 }
 941
 942 int handle_targets_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
 943 {
 944         target_t *target = targets;
 945         int count = 0;
 946
 947         if (argc == 1)
 948         {
 949                 int num = strtoul(args[0], NULL, 0);
 950
 951                 while (target)
 952                 {
 953                         count++;
 954                         target = target->next;
 955                 }
 956
 957                 if (num < count)
 958                         cmd_ctx->current_target = num;
 959                 else
 960                         command_print(cmd_ctx, "%i is out of bounds, only %i targets are configured", num, count);
 961
 962                 return ERROR_OK;
 963         }
 964
 965         while (target)
 966         {
 967                 command_print(cmd_ctx, "%i: %s (%s), state: %s", count++, target->type->name, target_endianess_strings[target->endianness], target_state_strings[target->state]);
 968                 target = target->next;
 969         }
 970
 971         return ERROR_OK;
 972 }
 973
 974 int handle_target_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
 975 {
 976         int i;
 977         int found = 0;
 978
 979         if (argc < 3)
 980         {
 981                 ERROR("target command requires at least three arguments: <type> <endianess> <reset_mode>");
 982                 exit(-1);
 983         }
 984
 985         /* search for the specified target */
 986         if (args[0] && (args[0][0] != 0))
 987         {
 988                 for (i = 0; target_types[i]; i++)
 989                 {
 990                         if (strcmp(args[0], target_types[i]->name) == 0)
 991                         {
 992                                 target_t **last_target_p = &targets;
 993
 994                                 /* register target specific commands */
 995                                 if (target_types[i]->register_commands(cmd_ctx) != ERROR_OK)
 996                                 {
 997                                         ERROR("couldn't register '%s' commands", args[0]);
 998                                         exit(-1);
 999                                 }
1000
1001                                 if (*last_target_p)
1002                                 {
1003                                         while ((*last_target_p)->next)
1004                                                 last_target_p = &((*last_target_p)->next);
1005                                         last_target_p = &((*last_target_p)->next);
1006                                 }
1007
1008                                 *last_target_p = malloc(sizeof(target_t));
1009
1010                                 (*last_target_p)->type = target_types[i];
1011
1012                                 if (strcmp(args[1], "big") == 0)
1013                                         (*last_target_p)->endianness = TARGET_BIG_ENDIAN;
1014                                 else if (strcmp(args[1], "little") == 0)
1015                                         (*last_target_p)->endianness = TARGET_LITTLE_ENDIAN;
1016                                 else
1017                                 {
1018                                         ERROR("endianness must be either 'little' or 'big', not '%s'", args[1]);
1019                                         exit(-1);
1020                                 }
1021
1022                                 /* what to do on a target reset */
1023                                 if (strcmp(args[2], "reset_halt") == 0)
1024                                         (*last_target_p)->reset_mode = RESET_HALT;
1025                                 else if (strcmp(args[2], "reset_run") == 0)
1026                                         (*last_target_p)->reset_mode = RESET_RUN;
1027                                 else if (strcmp(args[2], "reset_init") == 0)
1028                                         (*last_target_p)->reset_mode = RESET_INIT;
1029                                 else if (strcmp(args[2], "run_and_halt") == 0)
1030                                         (*last_target_p)->reset_mode = RESET_RUN_AND_HALT;
1031                                 else if (strcmp(args[2], "run_and_init") == 0)
1032                                         (*last_target_p)->reset_mode = RESET_RUN_AND_INIT;
1033                                 else
1034                                 {
1035                                         ERROR("unknown target startup mode %s", args[2]);
1036                                         exit(-1);
1037                                 }
1038                                 (*last_target_p)->run_and_halt_time = 1000; /* default 1s */
1039
1040                                 (*last_target_p)->reset_script = NULL;
1041                                 (*last_target_p)->post_halt_script = NULL;
1042                                 (*last_target_p)->pre_resume_script = NULL;
1043
1044                                 (*last_target_p)->working_area = 0x0;
1045                                 (*last_target_p)->working_area_size = 0x0;
1046                                 (*last_target_p)->working_areas = NULL;
1047                                 (*last_target_p)->backup_working_area = 0;
1048
1049                                 (*last_target_p)->state = TARGET_UNKNOWN;
1050                                 (*last_target_p)->reg_cache = NULL;
1051                                 (*last_target_p)->breakpoints = NULL;
1052                                 (*last_target_p)->watchpoints = NULL;
1053                                 (*last_target_p)->next = NULL;
1054                                 (*last_target_p)->arch_info = NULL;
1055
1056                                 /* initialize trace information */
1057                                 (*last_target_p)->trace_info = malloc(sizeof(trace_t));
1058                                 (*last_target_p)->trace_info->num_trace_points = 0;
1059                                 (*last_target_p)->trace_info->trace_points_size = 0;
1060                                 (*last_target_p)->trace_info->trace_points = NULL;
1061                                 (*last_target_p)->trace_info->trace_history_size = 0;
1062                                 (*last_target_p)->trace_info->trace_history = NULL;
1063                                 (*last_target_p)->trace_info->trace_history_pos = 0;
1064                                 (*last_target_p)->trace_info->trace_history_overflowed = 0;
1065
1066                                 (*last_target_p)->dbgmsg = NULL;
1067
1068                                 (*last_target_p)->type->target_command(cmd_ctx, cmd, args, argc, *last_target_p);
1069
1070                                 found = 1;
1071                                 break;
1072                         }
1073                 }
1074         }
1075
1076         /* no matching target found */
1077         if (!found)
1078         {
1079                 ERROR("target '%s' not found", args[0]);
1080                 exit(-1);
1081         }
1082
1083         return ERROR_OK;
1084 }
1085
1086 /* usage: target_script <target#> <event> <script_file> */
1087 int handle_target_script_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1088 {
1089         target_t *target = NULL;
1090
1091         if (argc < 3)
1092         {
1093                 ERROR("incomplete target_script command");
1094                 exit(-1);
1095         }
1096
1097         target = get_target_by_num(strtoul(args[0], NULL, 0));
1098
1099         if (!target)
1100         {
1101                 ERROR("target number '%s' not defined", args[0]);
1102                 exit(-1);
1103         }
1104
1105         if (strcmp(args[1], "reset") == 0)
1106         {
1107                 if (target->reset_script)
1108                         free(target->reset_script);
1109                 target->reset_script = strdup(args[2]);
1110         }
1111         else if (strcmp(args[1], "post_halt") == 0)
1112         {
1113                 if (target->post_halt_script)
1114                         free(target->post_halt_script);
1115                 target->post_halt_script = strdup(args[2]);
1116         }
1117         else if (strcmp(args[1], "pre_resume") == 0)
1118         {
1119                 if (target->pre_resume_script)
1120                         free(target->pre_resume_script);
1121                 target->pre_resume_script = strdup(args[2]);
1122         }
1123         else
1124         {
1125                 ERROR("unknown event type: '%s", args[1]);
1126                 exit(-1);
1127         }
1128
1129         return ERROR_OK;
1130 }
1131
1132 int handle_run_and_halt_time_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1133 {
1134         target_t *target = NULL;
1135
1136         if (argc < 2)
1137         {
1138                 ERROR("incomplete run_and_halt_time command");
1139                 exit(-1);
1140         }
1141
1142         target = get_target_by_num(strtoul(args[0], NULL, 0));
1143
1144         if (!target)
1145         {
1146                 ERROR("target number '%s' not defined", args[0]);
1147                 exit(-1);
1148         }
1149
1150         target->run_and_halt_time = strtoul(args[1], NULL, 0);
1151
1152         return ERROR_OK;
1153 }
1154
1155 int handle_working_area_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1156 {
1157         target_t *target = NULL;
1158
1159         if (argc < 4)
1160         {
1161                 ERROR("incomplete working_area command. usage: working_area <target#> <address> <size> <'backup'|'nobackup'>");
1162                 exit(-1);
1163         }
1164
1165         target = get_target_by_num(strtoul(args[0], NULL, 0));
1166
1167         if (!target)
1168         {
1169                 ERROR("target number '%s' not defined", args[0]);
1170                 exit(-1);
1171         }
1172
1173         target->working_area = strtoul(args[1], NULL, 0);
1174         target->working_area_size = strtoul(args[2], NULL, 0);
1175
1176         if (strcmp(args[3], "backup") == 0)
1177         {
1178                 target->backup_working_area = 1;
1179         }
1180         else if (strcmp(args[3], "nobackup") == 0)
1181         {
1182                 target->backup_working_area = 0;
1183         }
1184         else
1185         {
1186                 ERROR("unrecognized <backup|nobackup> argument (%s)", args[3]);
1187                 exit(-1);
1188         }
1189
1190         return ERROR_OK;
1191 }
1192
1193
1194 /* process target state changes */
1195 int handle_target(void *priv)
1196 {
1197         int retval;
1198         target_t *target = targets;
1199
1200         while (target)
1201         {
1202                 /* only poll if target isn't already halted */
1203                 if (target->state != TARGET_HALTED)
1204                 {
1205                         if (target_continous_poll)
1206                                 if ((retval = target->type->poll(target)) < 0)
1207                                 {
1208                                         ERROR("couldn't poll target. It's due for a reset.");
1209                                 }
1210                 }
1211
1212                 target = target->next;
1213         }
1214
1215         return ERROR_OK;
1216 }
1217
1218 int handle_reg_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1219 {
1220         target_t *target;
1221         reg_t *reg = NULL;
1222         int count = 0;
1223         char *value;
1224
1225         DEBUG("-");
1226
1227         target = get_current_target(cmd_ctx);
1228
1229         /* list all available registers for the current target */
1230         if (argc == 0)
1231         {
1232                 reg_cache_t *cache = target->reg_cache;
1233
1234                 count = 0;
1235                 while(cache)
1236                 {
1237                         int i;
1238                         for (i = 0; i < cache->num_regs; i++)
1239                         {
1240                                 value = buf_to_str(cache->reg_list[i].value, cache->reg_list[i].size, 16);
1241                                 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);
1242                                 free(value);
1243                         }
1244                         cache = cache->next;
1245                 }
1246
1247                 return ERROR_OK;
1248         }
1249
1250         /* access a single register by its ordinal number */
1251         if ((args[0][0] >= '0') && (args[0][0] <= '9'))
1252         {
1253                 int num = strtoul(args[0], NULL, 0);
1254                 reg_cache_t *cache = target->reg_cache;
1255
1256                 count = 0;
1257                 while(cache)
1258                 {
1259                         int i;
1260                         for (i = 0; i < cache->num_regs; i++)
1261                         {
1262                                 if (count++ == num)
1263                                 {
1264                                         reg = &cache->reg_list[i];
1265                                         break;
1266                                 }
1267                         }
1268                         if (reg)
1269                                 break;
1270                         cache = cache->next;
1271                 }
1272
1273                 if (!reg)
1274                 {
1275                         command_print(cmd_ctx, "%i is out of bounds, the current target has only %i registers (0 - %i)", num, count, count - 1);
1276                         return ERROR_OK;
1277                 }
1278         } else /* access a single register by its name */
1279         {
1280                 reg = register_get_by_name(target->reg_cache, args[0], 1);
1281
1282                 if (!reg)
1283                 {
1284                         command_print(cmd_ctx, "register %s not found in current target", args[0]);
1285                         return ERROR_OK;
1286                 }
1287         }
1288
1289         /* display a register */
1290         if ((argc == 1) || ((argc == 2) && !((args[1][0] >= '0') && (args[1][0] <= '9'))))
1291         {
1292                 if ((argc == 2) && (strcmp(args[1], "force") == 0))
1293                         reg->valid = 0;
1294
1295                 if (reg->valid == 0)
1296                 {
1297                         reg_arch_type_t *arch_type = register_get_arch_type(reg->arch_type);
1298                         if (arch_type == NULL)
1299                         {
1300                                 ERROR("BUG: encountered unregistered arch type");
1301                                 return ERROR_OK;
1302                         }
1303                         arch_type->get(reg);
1304                 }
1305                 value = buf_to_str(reg->value, reg->size, 16);
1306                 command_print(cmd_ctx, "%s (/%i): 0x%s", reg->name, reg->size, value);
1307                 free(value);
1308                 return ERROR_OK;
1309         }
1310
1311         /* set register value */
1312         if (argc == 2)
1313         {
1314                 u8 *buf = malloc(CEIL(reg->size, 8));
1315                 str_to_buf(args[1], strlen(args[1]), buf, reg->size, 0);
1316
1317                 reg_arch_type_t *arch_type = register_get_arch_type(reg->arch_type);
1318                 if (arch_type == NULL)
1319                 {
1320                         ERROR("BUG: encountered unregistered arch type");
1321                         return ERROR_OK;
1322                 }
1323
1324                 arch_type->set(reg, buf);
1325
1326                 value = buf_to_str(reg->value, reg->size, 16);
1327                 command_print(cmd_ctx, "%s (/%i): 0x%s", reg->name, reg->size, value);
1328                 free(value);
1329
1330                 free(buf);
1331
1332                 return ERROR_OK;
1333         }
1334
1335         command_print(cmd_ctx, "usage: reg <#|name> [value]");
1336
1337         return ERROR_OK;
1338 }
1339
1340 int handle_poll_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1341 {
1342         target_t *target = get_current_target(cmd_ctx);
1343         char buffer[512];
1344
1345         if (argc == 0)
1346         {
1347                 command_print(cmd_ctx, "target state: %s", target_state_strings[target->type->poll(target)]);
1348                 if (target->state == TARGET_HALTED)
1349                 {
1350                         target->type->arch_state(target, buffer, 512);
1351                         buffer[511] = 0;
1352                         command_print(cmd_ctx, "%s", buffer);
1353                 }
1354         }
1355         else
1356         {
1357                 if (strcmp(args[0], "on") == 0)
1358                 {
1359                         target_continous_poll = 1;
1360                 }
1361                 else if (strcmp(args[0], "off") == 0)
1362                 {
1363                         target_continous_poll = 0;
1364                 }
1365         }
1366
1367
1368         return ERROR_OK;
1369 }
1370
1371 int handle_wait_halt_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1372 {
1373         target_t *target = get_current_target(cmd_ctx);
1374         struct timeval timeout, now;
1375
1376         gettimeofday(&timeout, NULL);
1377         if (!argc)
1378                 timeval_add_time(&timeout, 5, 0);
1379         else {
1380                 char *end;
1381
1382                 timeval_add_time(&timeout, strtoul(args[0], &end, 0), 0);
1383                 if (*end) {
1384                         command_print(cmd_ctx, "usage: wait_halt [seconds]");
1385                         return ERROR_OK;
1386                 }
1387         }
1388
1389         command_print(cmd_ctx, "waiting for target halted...");
1390
1391         while(target->type->poll(target))
1392         {
1393                 if (target->state == TARGET_HALTED)
1394                 {
1395                         command_print(cmd_ctx, "target halted");
1396                         break;
1397                 }
1398                 target_call_timer_callbacks();
1399
1400                 gettimeofday(&now, NULL);
1401                 if ((now.tv_sec >= timeout.tv_sec) && (now.tv_usec >= timeout.tv_usec))
1402                 {
1403                         command_print(cmd_ctx, "timed out while waiting for target halt");
1404                         ERROR("timed out while waiting for target halt");
1405                         break;
1406                 }
1407         }
1408
1409         return ERROR_OK;
1410 }
1411
1412 int handle_halt_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1413 {
1414         int retval;
1415         target_t *target = get_current_target(cmd_ctx);
1416
1417         DEBUG("-");
1418
1419         command_print(cmd_ctx, "requesting target halt...");
1420
1421         if ((retval = target->type->halt(target)) != ERROR_OK)
1422         {
1423                 switch (retval)
1424                 {
1425                         case ERROR_TARGET_ALREADY_HALTED:
1426                                 command_print(cmd_ctx, "target already halted");
1427                                 break;
1428                         case ERROR_TARGET_TIMEOUT:
1429                                 command_print(cmd_ctx, "target timed out... shutting down");
1430                                 exit(-1);
1431                         default:
1432                                 command_print(cmd_ctx, "unknown error... shutting down");
1433                                 exit(-1);
1434                 }
1435         }
1436
1437         return ERROR_OK;
1438
1439 }
1440
1441 /* what to do on daemon startup */
1442 int handle_daemon_startup_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1443 {
1444         if (argc == 1)
1445         {
1446                 if (strcmp(args[0], "attach") == 0)
1447                 {
1448                         startup_mode = DAEMON_ATTACH;
1449                         return ERROR_OK;
1450                 }
1451                 else if (strcmp(args[0], "reset") == 0)
1452                 {
1453                         startup_mode = DAEMON_RESET;
1454                         return ERROR_OK;
1455                 }
1456         }
1457
1458         WARNING("invalid daemon_startup configuration directive: %s", args[0]);
1459         return ERROR_OK;
1460
1461 }
1462
1463 int handle_soft_reset_halt_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1464 {
1465         target_t *target = get_current_target(cmd_ctx);
1466         int retval;
1467
1468         command_print(cmd_ctx, "requesting target halt and executing a soft reset");
1469
1470         if ((retval = target->type->soft_reset_halt(target)) != ERROR_OK)
1471         {
1472                 switch (retval)
1473                 {
1474                         case ERROR_TARGET_TIMEOUT:
1475                                 command_print(cmd_ctx, "target timed out... shutting down");
1476                                 exit(-1);
1477                         default:
1478                                 command_print(cmd_ctx, "unknown error... shutting down");
1479                                 exit(-1);
1480                 }
1481         }
1482
1483         return ERROR_OK;
1484 }
1485
1486 int handle_reset_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1487 {
1488         target_t *target = get_current_target(cmd_ctx);
1489         enum target_reset_mode reset_mode = RESET_RUN;
1490
1491         DEBUG("-");
1492
1493         if (argc >= 1)
1494         {
1495                 if (strcmp("run", args[0]) == 0)
1496                         reset_mode = RESET_RUN;
1497                 else if (strcmp("halt", args[0]) == 0)
1498                         reset_mode = RESET_HALT;
1499                 else if (strcmp("init", args[0]) == 0)
1500                         reset_mode = RESET_INIT;
1501                 else if (strcmp("run_and_halt", args[0]) == 0)
1502                 {
1503                         reset_mode = RESET_RUN_AND_HALT;
1504                         if (argc >= 2)
1505                         {
1506                                 target->run_and_halt_time = strtoul(args[1], NULL, 0);
1507                         }
1508                 }
1509                 else if (strcmp("run_and_init", args[0]) == 0)
1510                 {
1511                         reset_mode = RESET_RUN_AND_INIT;
1512                         if (argc >= 2)
1513                         {
1514                                 target->run_and_halt_time = strtoul(args[1], NULL, 0);
1515                         }
1516                 }
1517                 else
1518                 {
1519                         command_print(cmd_ctx, "usage: reset ['run', 'halt', 'init', 'run_and_halt', 'run_and_init]");
1520                         return ERROR_OK;
1521                 }
1522                 target->reset_mode = reset_mode;
1523         }
1524
1525         target_process_reset(cmd_ctx);
1526
1527         return ERROR_OK;
1528 }
1529
1530 int handle_resume_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1531 {
1532         int retval;
1533         target_t *target = get_current_target(cmd_ctx);
1534
1535         DEBUG("-");
1536
1537         if (argc == 0)
1538                 retval = target->type->resume(target, 1, 0, 1, 0); /* current pc, addr = 0, handle breakpoints, not debugging */
1539         else if (argc == 1)
1540                 retval = target->type->resume(target, 0, strtoul(args[0], NULL, 0), 1, 0); /* addr = args[0], handle breakpoints, not debugging */
1541         else
1542         {
1543                 command_print(cmd_ctx, "usage: resume [address]");
1544                 return ERROR_OK;
1545         }
1546
1547         if (retval != ERROR_OK)
1548         {
1549                 switch (retval)
1550                 {
1551                         case ERROR_TARGET_NOT_HALTED:
1552                                 command_print(cmd_ctx, "target not halted");
1553                                 break;
1554                         default:
1555                                 command_print(cmd_ctx, "unknown error... shutting down");
1556                                 exit(-1);
1557                 }
1558         }
1559
1560         return ERROR_OK;
1561 }
1562
1563 int handle_step_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1564 {
1565         target_t *target = get_current_target(cmd_ctx);
1566
1567         DEBUG("-");
1568
1569         if (argc == 0)
1570                 target->type->step(target, 1, 0, 1); /* current pc, addr = 0, handle breakpoints */
1571
1572         if (argc == 1)
1573                 target->type->step(target, 0, strtoul(args[0], NULL, 0), 1); /* addr = args[0], handle breakpoints */
1574
1575         return ERROR_OK;
1576 }
1577
1578 int handle_md_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1579 {
1580         int count = 1;
1581         int size = 4;
1582         u32 address = 0;
1583         int i;
1584
1585         char output[128];
1586         int output_len;
1587
1588         int retval;
1589
1590         u8 *buffer;
1591         target_t *target = get_current_target(cmd_ctx);
1592
1593         if (argc < 1)
1594                 return ERROR_OK;
1595
1596         if (argc == 2)
1597                 count = strtoul(args[1], NULL, 0);
1598
1599         address = strtoul(args[0], NULL, 0);
1600
1601
1602         switch (cmd[2])
1603         {
1604                 case 'w':
1605                         size = 4;
1606                         break;
1607                 case 'h':
1608                         size = 2;
1609                         break;
1610                 case 'b':
1611                         size = 1;
1612                         break;
1613                 default:
1614                         return ERROR_OK;
1615         }
1616
1617         buffer = calloc(count, size);
1618         if ((retval  = target->type->read_memory(target, address, size, count, buffer)) != ERROR_OK)
1619         {
1620                 switch (retval)
1621                 {
1622                         case ERROR_TARGET_UNALIGNED_ACCESS:
1623                                 command_print(cmd_ctx, "error: address not aligned");
1624                                 break;
1625                         case ERROR_TARGET_NOT_HALTED:
1626                                 command_print(cmd_ctx, "error: target must be halted for memory accesses");
1627                                 break;
1628                         case ERROR_TARGET_DATA_ABORT:
1629                                 command_print(cmd_ctx, "error: access caused data abort, system possibly corrupted");
1630                                 break;
1631                         default:
1632                                 command_print(cmd_ctx, "error: unknown error");
1633                                 break;
1634                 }
1635                 return ERROR_OK;
1636         }
1637
1638         output_len = 0;
1639
1640         for (i = 0; i < count; i++)
1641         {
1642                 if (i%8 == 0)
1643                         output_len += snprintf(output + output_len, 128 - output_len, "0x%8.8x: ", address + (i*size));
1644
1645                 switch (size)
1646                 {
1647                         case 4:
1648                                 output_len += snprintf(output + output_len, 128 - output_len, "%8.8x ", target_buffer_get_u32(target, &buffer[i*4]));
1649                                 break;
1650                         case 2:
1651                                 output_len += snprintf(output + output_len, 128 - output_len, "%4.4x ", target_buffer_get_u16(target, &buffer[i*2]));
1652                                 break;
1653                         case 1:
1654                                 output_len += snprintf(output + output_len, 128 - output_len, "%2.2x ", buffer[i*1]);
1655                                 break;
1656                 }
1657
1658                 if ((i%8 == 7) || (i == count - 1))
1659                 {
1660                         command_print(cmd_ctx, output);
1661                         output_len = 0;
1662                 }
1663         }
1664
1665         free(buffer);
1666
1667         return ERROR_OK;
1668 }
1669
1670 int handle_mw_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1671 {
1672         u32 address = 0;
1673         u32 value = 0;
1674         int retval;
1675         target_t *target = get_current_target(cmd_ctx);
1676         u8 value_buf[4];
1677
1678         if (argc < 2)
1679                 return ERROR_OK;
1680
1681         address = strtoul(args[0], NULL, 0);
1682         value = strtoul(args[1], NULL, 0);
1683
1684         switch (cmd[2])
1685         {
1686                 case 'w':
1687                         target_buffer_set_u32(target, value_buf, value);
1688                         retval = target->type->write_memory(target, address, 4, 1, value_buf);
1689                         break;
1690                 case 'h':
1691                         target_buffer_set_u16(target, value_buf, value);
1692                         retval = target->type->write_memory(target, address, 2, 1, value_buf);
1693                         break;
1694                 case 'b':
1695                         value_buf[0] = value;
1696                         retval = target->type->write_memory(target, address, 1, 1, value_buf);
1697                         break;
1698                 default:
1699                         return ERROR_OK;
1700         }
1701
1702         switch (retval)
1703         {
1704                 case ERROR_TARGET_UNALIGNED_ACCESS:
1705                         command_print(cmd_ctx, "error: address not aligned");
1706                         break;
1707                 case ERROR_TARGET_DATA_ABORT:
1708                         command_print(cmd_ctx, "error: access caused data abort, system possibly corrupted");
1709                         break;
1710                 case ERROR_TARGET_NOT_HALTED:
1711                         command_print(cmd_ctx, "error: target must be halted for memory accesses");
1712                         break;
1713                 case ERROR_OK:
1714                         break;
1715                 default:
1716                         command_print(cmd_ctx, "error: unknown error");
1717                         break;
1718         }
1719
1720         return ERROR_OK;
1721
1722 }
1723
1724 int handle_load_image_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1725 {
1726         u8 *buffer;
1727         u32 buf_cnt;
1728         u32 image_size;
1729         int i;
1730         int retval;
1731
1732         image_t image;
1733
1734         duration_t duration;
1735         char *duration_text;
1736
1737         target_t *target = get_current_target(cmd_ctx);
1738
1739         if (argc < 1)
1740         {
1741                 command_print(cmd_ctx, "usage: load_image <filename> [address] [type]");
1742                 return ERROR_OK;
1743         }
1744
1745         /* a base address isn't always necessary, default to 0x0 (i.e. don't relocate) */
1746         if (argc >= 2)
1747         {
1748                 image.base_address_set = 1;
1749                 image.base_address = strtoul(args[1], NULL, 0);
1750         }
1751         else
1752         {
1753                 image.base_address_set = 0;
1754         }
1755
1756         image.start_address_set = 0;
1757
1758         duration_start_measure(&duration);
1759
1760         if (image_open(&image, args[0], (argc >= 3) ? args[2] : NULL) != ERROR_OK)
1761         {
1762                 command_print(cmd_ctx, "load_image error: %s", image.error_str);
1763                 return ERROR_OK;
1764         }
1765
1766         image_size = 0x0;
1767         for (i = 0; i < image.num_sections; i++)
1768         {
1769                 buffer = malloc(image.sections[i].size);
1770                 if ((retval = image_read_section(&image, i, 0x0, image.sections[i].size, buffer, &buf_cnt)) != ERROR_OK)
1771                 {
1772                         ERROR("image_read_section failed with error code: %i", retval);
1773                         command_print(cmd_ctx, "image reading failed, download aborted");
1774                         free(buffer);
1775                         image_close(&image);
1776                         return ERROR_OK;
1777                 }
1778                 target_write_buffer(target, image.sections[i].base_address, buf_cnt, buffer);
1779                 image_size += buf_cnt;
1780                 command_print(cmd_ctx, "%u byte written at address 0x%8.8x", buf_cnt, image.sections[i].base_address);
1781
1782                 free(buffer);
1783         }
1784
1785         duration_stop_measure(&duration, &duration_text);
1786         command_print(cmd_ctx, "downloaded %u byte in %s", image_size, duration_text);
1787         free(duration_text);
1788
1789         image_close(&image);
1790
1791         return ERROR_OK;
1792
1793 }
1794
1795 int handle_dump_image_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1796 {
1797         fileio_t fileio;
1798
1799         u32 address;
1800         u32 size;
1801         u8 buffer[560];
1802
1803         duration_t duration;
1804         char *duration_text;
1805
1806         target_t *target = get_current_target(cmd_ctx);
1807
1808         if (argc != 3)
1809         {
1810                 command_print(cmd_ctx, "usage: dump_image <filename> <address> <size>");
1811                 return ERROR_OK;
1812         }
1813
1814         address = strtoul(args[1], NULL, 0);
1815         size = strtoul(args[2], NULL, 0);
1816
1817         if ((address & 3) || (size & 3))
1818         {
1819                 command_print(cmd_ctx, "only 32-bit aligned address and size are supported");
1820                 return ERROR_OK;
1821         }
1822
1823         if (fileio_open(&fileio, args[0], FILEIO_WRITE, FILEIO_BINARY) != ERROR_OK)
1824         {
1825                 command_print(cmd_ctx, "dump_image error: %s", fileio.error_str);
1826                 return ERROR_OK;
1827         }
1828
1829         duration_start_measure(&duration);
1830
1831         while (size > 0)
1832         {
1833                 u32 size_written;
1834                 u32 this_run_size = (size > 560) ? 560 : size;
1835
1836                 target->type->read_memory(target, address, 4, this_run_size / 4, buffer);
1837                 fileio_write(&fileio, this_run_size, buffer, &size_written);
1838
1839                 size -= this_run_size;
1840                 address += this_run_size;
1841         }
1842
1843         fileio_close(&fileio);
1844
1845         duration_stop_measure(&duration, &duration_text);
1846         command_print(cmd_ctx, "dumped %"PRIi64" byte in %s", fileio.size, duration_text);
1847         free(duration_text);
1848
1849         return ERROR_OK;
1850
1851 }
1852
1853 int handle_verify_image_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1854 {
1855         u8 *buffer;
1856         u32 buf_cnt;
1857         u32 image_size;
1858         int i;
1859         int retval;
1860         u32 checksum = 0;
1861         u32 mem_checksum = 0;
1862
1863         image_t image;
1864
1865         duration_t duration;
1866         char *duration_text;
1867
1868         target_t *target = get_current_target(cmd_ctx);
1869
1870         if (argc < 1)
1871         {
1872                 command_print(cmd_ctx, "usage: verify_image <file> [offset] [type]");
1873                 return ERROR_OK;
1874         }
1875
1876         if (!target)
1877         {
1878                 ERROR("no target selected");
1879         return ERROR_OK;
1880         }
1881
1882         duration_start_measure(&duration);
1883
1884         if (argc >= 2)
1885         {
1886                 image.base_address_set = 1;
1887                 image.base_address = strtoul(args[1], NULL, 0);
1888         }
1889         else
1890         {
1891                 image.base_address_set = 0;
1892                 image.base_address = 0x0;
1893         }
1894
1895         image.start_address_set = 0;
1896
1897         if (image_open(&image, args[0], (argc == 3) ? args[2] : NULL) != ERROR_OK)
1898         {
1899                 command_print(cmd_ctx, "verify_image error: %s", image.error_str);
1900                 return ERROR_OK;
1901         }
1902
1903         image_size = 0x0;
1904         for (i = 0; i < image.num_sections; i++)
1905         {
1906                 buffer = malloc(image.sections[i].size);
1907                 if ((retval = image_read_section(&image, i, 0x0, image.sections[i].size, buffer, &buf_cnt)) != ERROR_OK)
1908                 {
1909                         ERROR("image_read_section failed with error code: %i", retval);
1910                         command_print(cmd_ctx, "image reading failed, verify aborted");
1911                         free(buffer);
1912                         image_close(&image);
1913                         return ERROR_OK;
1914                 }
1915
1916                 /* calculate checksum of image */
1917                 image_calculate_checksum( buffer, buf_cnt, &checksum );
1918                 free(buffer);
1919
1920                 retval = target_checksum_memory(target, image.sections[i].base_address, buf_cnt, &mem_checksum);
1921
1922                 if( retval != ERROR_OK )
1923                 {
1924                         command_print(cmd_ctx, "image verify failed, verify aborted");
1925                         image_close(&image);
1926                         return ERROR_OK;
1927                 }
1928
1929                 if( checksum != mem_checksum )
1930                 {
1931                         command_print(cmd_ctx, "image verify failed, verify aborted");
1932                         image_close(&image);
1933                         return ERROR_OK;
1934                 }
1935
1936                 image_size += buf_cnt;
1937         }
1938
1939         duration_stop_measure(&duration, &duration_text);
1940         command_print(cmd_ctx, "verified %u bytes in %s", image_size, duration_text);
1941         free(duration_text);
1942
1943         image_close(&image);
1944
1945         return ERROR_OK;
1946 }
1947
1948 int handle_bp_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1949 {
1950         int retval;
1951         target_t *target = get_current_target(cmd_ctx);
1952
1953         if (argc == 0)
1954         {
1955                 breakpoint_t *breakpoint = target->breakpoints;
1956
1957                 while (breakpoint)
1958                 {
1959                         if (breakpoint->type == BKPT_SOFT)
1960                         {
1961                                 char* buf = buf_to_str(breakpoint->orig_instr, breakpoint->length, 16);
1962                                 command_print(cmd_ctx, "0x%8.8x, 0x%x, %i, 0x%s", breakpoint->address, breakpoint->length, breakpoint->set, buf);
1963                                 free(buf);
1964                         }
1965                         else
1966                         {
1967                                 command_print(cmd_ctx, "0x%8.8x, 0x%x, %i", breakpoint->address, breakpoint->length, breakpoint->set);
1968                         }
1969                         breakpoint = breakpoint->next;
1970                 }
1971         }
1972         else if (argc >= 2)
1973         {
1974                 int hw = BKPT_SOFT;
1975                 u32 length = 0;
1976
1977                 length = strtoul(args[1], NULL, 0);
1978
1979                 if (argc >= 3)
1980                         if (strcmp(args[2], "hw") == 0)
1981                                 hw = BKPT_HARD;
1982
1983                 if ((retval = breakpoint_add(target, strtoul(args[0], NULL, 0), length, hw)) != ERROR_OK)
1984                 {
1985                         switch (retval)
1986                         {
1987                                 case ERROR_TARGET_NOT_HALTED:
1988                                         command_print(cmd_ctx, "target must be halted to set breakpoints");
1989                                         break;
1990                                 case ERROR_TARGET_RESOURCE_NOT_AVAILABLE:
1991                                         command_print(cmd_ctx, "no more breakpoints available");
1992                                         break;
1993                                 default:
1994                                         command_print(cmd_ctx, "unknown error, breakpoint not set");
1995                                         break;
1996                         }
1997                 }
1998                 else
1999                 {
2000                         command_print(cmd_ctx, "breakpoint added at address 0x%8.8x", strtoul(args[0], NULL, 0));
2001                 }
2002         }
2003         else
2004         {
2005                 command_print(cmd_ctx, "usage: bp <address> <length> ['hw']");
2006         }
2007
2008         return ERROR_OK;
2009 }
2010
2011 int handle_rbp_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2012 {
2013         target_t *target = get_current_target(cmd_ctx);
2014
2015         if (argc > 0)
2016                 breakpoint_remove(target, strtoul(args[0], NULL, 0));
2017
2018         return ERROR_OK;
2019 }
2020
2021 int handle_wp_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2022 {
2023         target_t *target = get_current_target(cmd_ctx);
2024         int retval;
2025
2026         if (argc == 0)
2027         {
2028                 watchpoint_t *watchpoint = target->watchpoints;
2029
2030                 while (watchpoint)
2031                 {
2032                         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);
2033                         watchpoint = watchpoint->next;
2034                 }
2035         }
2036         else if (argc >= 2)
2037         {
2038                 enum watchpoint_rw type = WPT_ACCESS;
2039                 u32 data_value = 0x0;
2040                 u32 data_mask = 0xffffffff;
2041
2042                 if (argc >= 3)
2043                 {
2044                         switch(args[2][0])
2045                         {
2046                                 case 'r':
2047                                         type = WPT_READ;
2048                                         break;
2049                                 case 'w':
2050                                         type = WPT_WRITE;
2051                                         break;
2052                                 case 'a':
2053                                         type = WPT_ACCESS;
2054                                         break;
2055                                 default:
2056                                         command_print(cmd_ctx, "usage: wp <address> <length> [r/w/a] [value] [mask]");
2057                                         return ERROR_OK;
2058                         }
2059                 }
2060                 if (argc >= 4)
2061                 {
2062                         data_value = strtoul(args[3], NULL, 0);
2063                 }
2064                 if (argc >= 5)
2065                 {
2066                         data_mask = strtoul(args[4], NULL, 0);
2067                 }
2068
2069                 if ((retval = watchpoint_add(target, strtoul(args[0], NULL, 0),
2070                                 strtoul(args[1], NULL, 0), type, data_value, data_mask)) != ERROR_OK)
2071                 {
2072                         switch (retval)
2073                         {
2074                                 case ERROR_TARGET_NOT_HALTED:
2075                                         command_print(cmd_ctx, "target must be halted to set watchpoints");
2076                                         break;
2077                                 case ERROR_TARGET_RESOURCE_NOT_AVAILABLE:
2078                                         command_print(cmd_ctx, "no more watchpoints available");
2079                                         break;
2080                                 default:
2081                                         command_print(cmd_ctx, "unknown error, watchpoint not set");
2082                                         break;
2083                         }
2084                 }
2085         }
2086         else
2087         {
2088                 command_print(cmd_ctx, "usage: wp <address> <length> [r/w/a] [value] [mask]");
2089         }
2090
2091         return ERROR_OK;
2092 }
2093
2094 int handle_rwp_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2095 {
2096         target_t *target = get_current_target(cmd_ctx);
2097
2098         if (argc > 0)
2099                 watchpoint_remove(target, strtoul(args[0], NULL, 0));
2100
2101         return ERROR_OK;
2102 }
2103
2104