projects / fw / openocd / blob
? search:


f9d957d69e0927b561c727b8e1d60b398fe93e00
[fw/openocd] / src / target / target.c
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                 target = target->next;
317         }
318         jtag_execute_queue();
319         
320         return retval;
321 }       
322
323 int target_init(struct command_context_s *cmd_ctx)
324 {
325         target_t *target = targets;
326         
327         while (target)
328         {
329                 if (target->type->init_target(cmd_ctx, target) != ERROR_OK)
330                 {
331                         ERROR("target '%s' init failed", target->type->name);
332                         exit(-1);
333                 }
334                 target = target->next;
335         }
336         
337         if (targets)
338         {
339                 target_register_user_commands(cmd_ctx);
340                 target_register_timer_callback(handle_target, 100, 1, NULL);
341         }
342                 
343         if (startup_mode == DAEMON_RESET)
344                 target_process_reset(cmd_ctx);
345         
346         return ERROR_OK;
347 }
348
349 int target_register_event_callback(int (*callback)(struct target_s *target, enum target_event event, void *priv), void *priv)
350 {
351         target_event_callback_t **callbacks_p = &target_event_callbacks;
352         
353         if (callback == NULL)
354         {
355                 return ERROR_INVALID_ARGUMENTS;
356         }
357         
358         if (*callbacks_p)
359         {
360                 while ((*callbacks_p)->next)
361                         callbacks_p = &((*callbacks_p)->next);
362                 callbacks_p = &((*callbacks_p)->next);
363         }
364         
365         (*callbacks_p) = malloc(sizeof(target_event_callback_t));
366         (*callbacks_p)->callback = callback;
367         (*callbacks_p)->priv = priv;
368         (*callbacks_p)->next = NULL;
369         
370         return ERROR_OK;
371 }
372
373 int target_register_timer_callback(int (*callback)(void *priv), int time_ms, int periodic, void *priv)
374 {
375         target_timer_callback_t **callbacks_p = &target_timer_callbacks;
376         struct timeval now;
377         
378         if (callback == NULL)
379         {
380                 return ERROR_INVALID_ARGUMENTS;
381         }
382         
383         if (*callbacks_p)
384         {
385                 while ((*callbacks_p)->next)
386                         callbacks_p = &((*callbacks_p)->next);
387                 callbacks_p = &((*callbacks_p)->next);
388         }
389         
390         (*callbacks_p) = malloc(sizeof(target_timer_callback_t));
391         (*callbacks_p)->callback = callback;
392         (*callbacks_p)->periodic = periodic;
393         (*callbacks_p)->time_ms = time_ms;
394         
395         gettimeofday(&now, NULL);
396         (*callbacks_p)->when.tv_usec = now.tv_usec + (time_ms % 1000) * 1000;
397         time_ms -= (time_ms % 1000);
398         (*callbacks_p)->when.tv_sec = now.tv_sec + (time_ms / 1000);
399         if ((*callbacks_p)->when.tv_usec > 1000000)
400         {
401                 (*callbacks_p)->when.tv_usec = (*callbacks_p)->when.tv_usec - 1000000;
402                 (*callbacks_p)->when.tv_sec += 1;
403         }
404         
405         (*callbacks_p)->priv = priv;
406         (*callbacks_p)->next = NULL;
407         
408         return ERROR_OK;
409 }
410
411 int target_unregister_event_callback(int (*callback)(struct target_s *target, enum target_event event, void *priv), void *priv)
412 {
413         target_event_callback_t **p = &target_event_callbacks;
414         target_event_callback_t *c = target_event_callbacks;
415         
416         if (callback == NULL)
417         {
418                 return ERROR_INVALID_ARGUMENTS;
419         }
420                 
421         while (c)
422         {
423                 target_event_callback_t *next = c->next;
424                 if ((c->callback == callback) && (c->priv == priv))
425                 {
426                         *p = next;
427                         free(c);
428                         return ERROR_OK;
429                 }
430                 else
431                         p = &(c->next);
432                 c = next;
433         }
434         
435         return ERROR_OK;
436 }
437
438 int target_unregister_timer_callback(int (*callback)(void *priv), void *priv)
439 {
440         target_timer_callback_t **p = &target_timer_callbacks;
441         target_timer_callback_t *c = target_timer_callbacks;
442         
443         if (callback == NULL)
444         {
445                 return ERROR_INVALID_ARGUMENTS;
446         }
447                 
448         while (c)
449         {
450                 target_timer_callback_t *next = c->next;
451                 if ((c->callback == callback) && (c->priv == priv))
452                 {
453                         *p = next;
454                         free(c);
455                         return ERROR_OK;
456                 }
457                 else
458                         p = &(c->next);
459                 c = next;
460         }
461         
462         return ERROR_OK;
463 }
464
465 int target_call_event_callbacks(target_t *target, enum target_event event)
466 {
467         target_event_callback_t *callback = target_event_callbacks;
468         target_event_callback_t *next_callback;
469         
470         DEBUG("target event %i", event);
471         
472         while (callback)
473         {
474                 next_callback = callback->next;
475                 callback->callback(target, event, callback->priv);
476                 callback = next_callback;
477         }
478         
479         return ERROR_OK;
480 }
481
482 int target_call_timer_callbacks()
483 {
484         target_timer_callback_t *callback = target_timer_callbacks;
485         target_timer_callback_t *next_callback;
486         struct timeval now;
487
488         gettimeofday(&now, NULL);
489         
490         while (callback)
491         {
492                 next_callback = callback->next;
493                 
494                 if (((now.tv_sec >= callback->when.tv_sec) && (now.tv_usec >= callback->when.tv_usec))
495                         || (now.tv_sec > callback->when.tv_sec))
496                 {
497                         callback->callback(callback->priv);
498                         if (callback->periodic)
499                         {
500                                 int time_ms = callback->time_ms;
501                                 callback->when.tv_usec = now.tv_usec + (time_ms % 1000) * 1000;
502                                 time_ms -= (time_ms % 1000);
503                                 callback->when.tv_sec = now.tv_sec + time_ms / 1000;
504                                 if (callback->when.tv_usec > 1000000)
505                                 {
506                                         callback->when.tv_usec = callback->when.tv_usec - 1000000;
507                                         callback->when.tv_sec += 1;
508                                 }
509                         }
510                         else
511                                 target_unregister_timer_callback(callback->callback, callback->priv);
512                 }
513                         
514                 callback = next_callback;
515         }
516         
517         return ERROR_OK;
518 }
519
520 int target_alloc_working_area(struct target_s *target, u32 size, working_area_t **area)
521 {
522         working_area_t *c = target->working_areas;
523         working_area_t *new_wa = NULL;
524         
525         /* only allocate multiples of 4 byte */
526         if (size % 4)
527         {
528                 ERROR("BUG: code tried to allocate unaligned number of bytes, padding");
529                 size = CEIL(size, 4);
530         }
531         
532         /* see if there's already a matching working area */
533         while (c)
534         {
535                 if ((c->free) && (c->size == size))
536                 {
537                         new_wa = c;
538                         break;
539                 }
540                 c = c->next;
541         }
542         
543         /* if not, allocate a new one */
544         if (!new_wa)
545         {
546                 working_area_t **p = &target->working_areas;
547                 u32 first_free = target->working_area;
548                 u32 free_size = target->working_area_size;
549                 
550                 DEBUG("allocating new working area");
551                 
552                 c = target->working_areas;
553                 while (c)
554                 {
555                         first_free += c->size;
556                         free_size -= c->size;
557                         p = &c->next;
558                         c = c->next;
559                 }
560                 
561                 if (free_size < size)
562                 {
563                         WARNING("not enough working area available");
564                         return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
565                 }
566                 
567                 new_wa = malloc(sizeof(working_area_t));
568                 new_wa->next = NULL;
569                 new_wa->size = size;
570                 new_wa->address = first_free;
571                 
572                 if (target->backup_working_area)
573                 {
574                         new_wa->backup = malloc(new_wa->size);
575                         target->type->read_memory(target, new_wa->address, 4, new_wa->size / 4, new_wa->backup);
576                 }
577                 else
578                 {
579                         new_wa->backup = NULL;
580                 }
581                 
582                 /* put new entry in list */
583                 *p = new_wa;
584         }
585         
586         /* mark as used, and return the new (reused) area */
587         new_wa->free = 0;
588         *area = new_wa;
589         
590         /* user pointer */
591         new_wa->user = area;
592         
593         return ERROR_OK;
594 }
595
596 int target_free_working_area(struct target_s *target, working_area_t *area)
597 {
598         if (area->free)
599                 return ERROR_OK;
600         
601         if (target->backup_working_area)
602                 target->type->write_memory(target, area->address, 4, area->size / 4, area->backup);
603         
604         area->free = 1;
605         
606         /* mark user pointer invalid */
607         *area->user = NULL;
608         area->user = NULL;
609         
610         return ERROR_OK;
611 }
612
613 int target_free_all_working_areas(struct target_s *target)
614 {
615         working_area_t *c = target->working_areas;
616
617         while (c)
618         {
619                 working_area_t *next = c->next;
620                 target_free_working_area(target, c);
621                 
622                 if (c->backup)
623                         free(c->backup);
624                 
625                 free(c);
626                 
627                 c = next;
628         }
629         
630         target->working_areas = NULL;
631         
632         return ERROR_OK;
633 }
634
635 int target_register_commands(struct command_context_s *cmd_ctx)
636 {
637         register_command(cmd_ctx, NULL, "target", handle_target_command, COMMAND_CONFIG, NULL);
638         register_command(cmd_ctx, NULL, "targets", handle_targets_command, COMMAND_EXEC, NULL);
639         register_command(cmd_ctx, NULL, "daemon_startup", handle_daemon_startup_command, COMMAND_CONFIG, NULL);
640         register_command(cmd_ctx, NULL, "target_script", handle_target_script_command, COMMAND_CONFIG, NULL);
641         register_command(cmd_ctx, NULL, "run_and_halt_time", handle_run_and_halt_time_command, COMMAND_CONFIG, NULL);
642         register_command(cmd_ctx, NULL, "working_area", handle_working_area_command, COMMAND_CONFIG, NULL);
643
644         return ERROR_OK;
645 }
646
647 int target_write_buffer(struct target_s *target, u32 address, u32 size, u8 *buffer)
648 {
649         int retval;
650         
651         DEBUG("writing buffer of %i byte at 0x%8.8x", size, address);
652         
653         /* handle writes of less than 4 byte */
654         if (size < 4)
655         {
656                 if ((retval = target->type->write_memory(target, address, 1, size, buffer)) != ERROR_OK)
657                         return retval;
658                 return ERROR_OK;
659         }
660         
661         /* handle unaligned head bytes */
662         if (address % 4)
663         {
664                 int unaligned = 4 - (address % 4);
665                 
666                 if ((retval = target->type->write_memory(target, address, 1, unaligned, buffer)) != ERROR_OK)
667                         return retval;
668                 
669                 buffer += unaligned;
670                 address += unaligned;
671                 size -= unaligned;
672         }
673                 
674         /* handle aligned words */
675         if (size >= 4)
676         {
677                 int aligned = size - (size % 4);
678         
679                 /* use bulk writes above a certain limit. This may have to be changed */
680                 if (aligned > 128)
681                 {
682                         if ((retval = target->type->bulk_write_memory(target, address, aligned / 4, buffer)) != ERROR_OK)
683                                 return retval;
684                 }
685                 else
686                 {
687                         if ((retval = target->type->write_memory(target, address, 4, aligned / 4, buffer)) != ERROR_OK)
688                                 return retval;
689                 }
690                 
691                 buffer += aligned;
692                 address += aligned;
693                 size -= aligned;
694         }
695         
696         /* handle tail writes of less than 4 bytes */
697         if (size > 0)
698         {
699                 if ((retval = target->type->write_memory(target, address, 1, size, buffer)) != ERROR_OK)
700                         return retval;
701         }
702         
703         return ERROR_OK;
704 }
705
706 int target_read_buffer(struct target_s *target, u32 address, u32 size, u8 *buffer)
707 {
708         int retval;
709         
710         DEBUG("reading buffer of %i byte at 0x%8.8x", size, address);
711         
712         /* handle reads of less than 4 byte */
713         if (size < 4)
714         {
715                 if ((retval = target->type->read_memory(target, address, 1, size, buffer)) != ERROR_OK)
716                         return retval;
717                 return ERROR_OK;
718         }
719         
720         /* handle unaligned head bytes */
721         if (address % 4)
722         {
723                 int unaligned = 4 - (address % 4);
724                 
725                 if ((retval = target->type->read_memory(target, address, 1, unaligned, buffer)) != ERROR_OK)
726                         return retval;
727                 
728                 buffer += unaligned;
729                 address += unaligned;
730                 size -= unaligned;
731         }
732                 
733         /* handle aligned words */
734         if (size >= 4)
735         {
736                 int aligned = size - (size % 4);
737         
738                 if ((retval = target->type->read_memory(target, address, 4, aligned / 4, buffer)) != ERROR_OK)
739                         return retval;
740                 
741                 buffer += aligned;
742                 address += aligned;
743                 size -= aligned;
744         }
745         
746         /* handle tail writes of less than 4 bytes */
747         if (size > 0)
748         {
749                 if ((retval = target->type->read_memory(target, address, 1, size, buffer)) != ERROR_OK)
750                         return retval;
751         }
752         
753         return ERROR_OK;
754 }
755
756 int target_checksum_memory(struct target_s *target, u32 address, u32 size, u32* crc)
757 {
758         u8 *buffer;
759         int retval;
760         int i;
761         u32 checksum = 0;
762         
763         if ((retval = target->type->checksum_memory(target, address,
764                 size, &checksum)) == ERROR_TARGET_RESOURCE_NOT_AVAILABLE)
765         {
766                 buffer = malloc(size);
767                 target_read_buffer(target, address, size, buffer);
768
769                 /* convert to target endianess */
770                 for (i = 0; i < (size/sizeof(u32)); i++)
771                 {
772                         u32 target_data;
773                         target_data = target_buffer_get_u32(target, &buffer[i*sizeof(u32)]);
774                         target_buffer_set_u32(target, &buffer[i*sizeof(u32)], target_data);
775                 }
776
777                 retval = image_calculate_checksum( buffer, size, &checksum );
778                 free(buffer);
779         }
780         
781         *crc = checksum;
782         
783         return retval;
784 }
785
786 int target_read_u32(struct target_s *target, u32 address, u32 *value)
787 {
788         u8 value_buf[4];
789
790         int retval = target->type->read_memory(target, address, 4, 1, value_buf);
791         
792         if (retval == ERROR_OK)
793         {
794                 *value = target_buffer_get_u32(target, value_buf);
795                 DEBUG("address: 0x%8.8x, value: 0x%8.8x", address, *value);
796         }
797         else
798         {
799                 *value = 0x0;
800                 DEBUG("address: 0x%8.8x failed", address);
801         }
802         
803         return retval;
804 }
805
806 int target_read_u16(struct target_s *target, u32 address, u16 *value)
807 {
808         u8 value_buf[2];
809         
810         int retval = target->type->read_memory(target, address, 2, 1, value_buf);
811         
812         if (retval == ERROR_OK)
813         {
814                 *value = target_buffer_get_u16(target, value_buf);
815                 DEBUG("address: 0x%8.8x, value: 0x%4.4x", address, *value);
816         }
817         else
818         {
819                 *value = 0x0;
820                 DEBUG("address: 0x%8.8x failed", address);
821         }
822         
823         return retval;
824 }
825
826 int target_read_u8(struct target_s *target, u32 address, u8 *value)
827 {
828         int retval = target->type->read_memory(target, address, 1, 1, value);
829
830         if (retval == ERROR_OK)
831         {
832                 DEBUG("address: 0x%8.8x, value: 0x%2.2x", 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_write_u32(struct target_s *target, u32 address, u32 value)
844 {
845         int retval;
846         u8 value_buf[4];
847
848         DEBUG("address: 0x%8.8x, value: 0x%8.8x", address, value);
849
850         target_buffer_set_u32(target, value_buf, value);        
851         if ((retval = target->type->write_memory(target, address, 4, 1, value_buf)) != ERROR_OK)
852         {
853                 DEBUG("failed: %i", retval);
854         }
855         
856         return retval;
857 }
858
859 int target_write_u16(struct target_s *target, u32 address, u16 value)
860 {
861         int retval;
862         u8 value_buf[2];
863         
864         DEBUG("address: 0x%8.8x, value: 0x%8.8x", address, value);
865
866         target_buffer_set_u16(target, value_buf, value);        
867         if ((retval = target->type->write_memory(target, address, 2, 1, value_buf)) != ERROR_OK)
868         {
869                 DEBUG("failed: %i", retval);
870         }
871         
872         return retval;
873 }
874
875 int target_write_u8(struct target_s *target, u32 address, u8 value)
876 {
877         int retval;
878         
879         DEBUG("address: 0x%8.8x, value: 0x%2.2x", address, value);
880
881         if ((retval = target->type->read_memory(target, address, 1, 1, &value)) != ERROR_OK)
882         {
883                 DEBUG("failed: %i", retval);
884         }
885         
886         return retval;
887 }
888
889 int target_register_user_commands(struct command_context_s *cmd_ctx)
890 {
891         register_command(cmd_ctx,  NULL, "reg", handle_reg_command, COMMAND_EXEC, NULL);
892         register_command(cmd_ctx,  NULL, "poll", handle_poll_command, COMMAND_EXEC, "poll target state");
893         register_command(cmd_ctx,  NULL, "wait_halt", handle_wait_halt_command, COMMAND_EXEC, "wait for target halt [time (s)]");
894         register_command(cmd_ctx,  NULL, "halt", handle_halt_command, COMMAND_EXEC, "halt target");
895         register_command(cmd_ctx,  NULL, "resume", handle_resume_command, COMMAND_EXEC, "resume target [addr]");
896         register_command(cmd_ctx,  NULL, "step", handle_step_command, COMMAND_EXEC, "step one instruction from current PC or [addr]");
897         register_command(cmd_ctx,  NULL, "reset", handle_reset_command, COMMAND_EXEC, "reset target [run|halt|init|run_and_halt|run_and_init]");
898         register_command(cmd_ctx,  NULL, "soft_reset_halt", handle_soft_reset_halt_command, COMMAND_EXEC, "halt the target and do a soft reset");
899
900         register_command(cmd_ctx,  NULL, "mdw", handle_md_command, COMMAND_EXEC, "display memory words <addr> [count]");
901         register_command(cmd_ctx,  NULL, "mdh", handle_md_command, COMMAND_EXEC, "display memory half-words <addr> [count]");
902         register_command(cmd_ctx,  NULL, "mdb", handle_md_command, COMMAND_EXEC, "display memory bytes <addr> [count]");
903         
904         register_command(cmd_ctx,  NULL, "mww", handle_mw_command, COMMAND_EXEC, "write memory word <addr> <value>");
905         register_command(cmd_ctx,  NULL, "mwh", handle_mw_command, COMMAND_EXEC, "write memory half-word <addr> <value>");
906         register_command(cmd_ctx,  NULL, "mwb", handle_mw_command, COMMAND_EXEC, "write memory byte <addr> <value>");
907         
908         register_command(cmd_ctx,  NULL, "bp", handle_bp_command, COMMAND_EXEC, "set breakpoint <address> <length> [hw]");      
909         register_command(cmd_ctx,  NULL, "rbp", handle_rbp_command, COMMAND_EXEC, "remove breakpoint <adress>");
910         register_command(cmd_ctx,  NULL, "wp", handle_wp_command, COMMAND_EXEC, "set watchpoint <address> <length> <r/w/a> [value] [mask]");    
911         register_command(cmd_ctx,  NULL, "rwp", handle_rwp_command, COMMAND_EXEC, "remove watchpoint <adress>");
912         
913         register_command(cmd_ctx,  NULL, "load_image", handle_load_image_command, COMMAND_EXEC, "load_image <file> <address> ['bin'|'ihex'|'elf'|'s19']");
914         register_command(cmd_ctx,  NULL, "dump_image", handle_dump_image_command, COMMAND_EXEC, "dump_image <file> <address> <size>");
915         register_command(cmd_ctx,  NULL, "verify_image", handle_verify_image_command, COMMAND_EXEC, "verify_image <file> [offset] [type]");
916         register_command(cmd_ctx,  NULL, "load_binary", handle_load_image_command, COMMAND_EXEC, "[DEPRECATED] load_binary <file> <address>");
917         register_command(cmd_ctx,  NULL, "dump_binary", handle_dump_image_command, COMMAND_EXEC, "[DEPRECATED] dump_binary <file> <address> <size>");
918         
919         target_request_register_commands(cmd_ctx);
920         trace_register_commands(cmd_ctx);
921         
922         return ERROR_OK;
923 }
924
925 int handle_targets_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
926 {
927         target_t *target = targets;
928         int count = 0;
929         
930         if (argc == 1)
931         {
932                 int num = strtoul(args[0], NULL, 0);
933                 
934                 while (target)
935                 {
936                         count++;
937                         target = target->next;
938                 }
939                 
940                 if (num < count)
941                         cmd_ctx->current_target = num;
942                 else
943                         command_print(cmd_ctx, "%i is out of bounds, only %i targets are configured", num, count);
944                         
945                 return ERROR_OK;
946         }
947                 
948         while (target)
949         {
950                 command_print(cmd_ctx, "%i: %s (%s), state: %s", count++, target->type->name, target_endianess_strings[target->endianness], target_state_strings[target->state]);
951                 target = target->next;
952         }
953         
954         return ERROR_OK;
955 }
956
957 int handle_target_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
958 {
959         int i;
960         int found = 0;
961         
962         if (argc < 3)
963         {
964                 ERROR("target command requires at least three arguments: <type> <endianess> <reset_mode>");
965                 exit(-1);
966         }
967         
968         /* search for the specified target */
969         if (args[0] && (args[0][0] != 0))
970         {
971                 for (i = 0; target_types[i]; i++)
972                 {
973                         if (strcmp(args[0], target_types[i]->name) == 0)
974                         {
975                                 target_t **last_target_p = &targets;
976                                 
977                                 /* register target specific commands */
978                                 if (target_types[i]->register_commands(cmd_ctx) != ERROR_OK)
979                                 {
980                                         ERROR("couldn't register '%s' commands", args[0]);
981                                         exit(-1);
982                                 }
983
984                                 if (*last_target_p)
985                                 {
986                                         while ((*last_target_p)->next)
987                                                 last_target_p = &((*last_target_p)->next);
988                                         last_target_p = &((*last_target_p)->next);
989                                 }
990
991                                 *last_target_p = malloc(sizeof(target_t));
992                                 
993                                 (*last_target_p)->type = target_types[i];
994                                 
995                                 if (strcmp(args[1], "big") == 0)
996                                         (*last_target_p)->endianness = TARGET_BIG_ENDIAN;
997                                 else if (strcmp(args[1], "little") == 0)
998                                         (*last_target_p)->endianness = TARGET_LITTLE_ENDIAN;
999                                 else
1000                                 {
1001                                         ERROR("endianness must be either 'little' or 'big', not '%s'", args[1]);
1002                                         exit(-1);
1003                                 }
1004                                 
1005                                 /* what to do on a target reset */
1006                                 if (strcmp(args[2], "reset_halt") == 0)
1007                                         (*last_target_p)->reset_mode = RESET_HALT;
1008                                 else if (strcmp(args[2], "reset_run") == 0)
1009                                         (*last_target_p)->reset_mode = RESET_RUN;
1010                                 else if (strcmp(args[2], "reset_init") == 0)
1011                                         (*last_target_p)->reset_mode = RESET_INIT;
1012                                 else if (strcmp(args[2], "run_and_halt") == 0)
1013                                         (*last_target_p)->reset_mode = RESET_RUN_AND_HALT;
1014                                 else if (strcmp(args[2], "run_and_init") == 0)
1015                                         (*last_target_p)->reset_mode = RESET_RUN_AND_INIT;
1016                                 else
1017                                 {
1018                                         ERROR("unknown target startup mode %s", args[2]);
1019                                         exit(-1);
1020                                 }
1021                                 (*last_target_p)->run_and_halt_time = 1000; /* default 1s */
1022                                 
1023                                 (*last_target_p)->reset_script = NULL;
1024                                 (*last_target_p)->post_halt_script = NULL;
1025                                 (*last_target_p)->pre_resume_script = NULL;
1026                                 
1027                                 (*last_target_p)->working_area = 0x0;
1028                                 (*last_target_p)->working_area_size = 0x0;
1029                                 (*last_target_p)->working_areas = NULL;
1030                                 (*last_target_p)->backup_working_area = 0;
1031                                 
1032                                 (*last_target_p)->state = TARGET_UNKNOWN;
1033                                 (*last_target_p)->reg_cache = NULL;
1034                                 (*last_target_p)->breakpoints = NULL;
1035                                 (*last_target_p)->watchpoints = NULL;
1036                                 (*last_target_p)->next = NULL;
1037                                 (*last_target_p)->arch_info = NULL;
1038                                 
1039                                 /* initialize trace information */
1040                                 (*last_target_p)->trace_info = malloc(sizeof(trace_t));
1041                                 (*last_target_p)->trace_info->num_trace_points = 0;
1042                                 (*last_target_p)->trace_info->trace_points_size = 0;
1043                                 (*last_target_p)->trace_info->trace_points = NULL;
1044                                 (*last_target_p)->trace_info->trace_history_size = 0;
1045                                 (*last_target_p)->trace_info->trace_history = NULL;
1046                                 (*last_target_p)->trace_info->trace_history_pos = 0;
1047                                 (*last_target_p)->trace_info->trace_history_overflowed = 0;
1048                                 
1049                                 (*last_target_p)->dbgmsg = NULL;
1050                                 
1051                                 (*last_target_p)->type->target_command(cmd_ctx, cmd, args, argc, *last_target_p);
1052                                 
1053                                 found = 1;
1054                                 break;
1055                         }
1056                 }
1057         }
1058         
1059         /* no matching target found */
1060         if (!found)
1061         {
1062                 ERROR("target '%s' not found", args[0]);
1063                 exit(-1);
1064         }
1065
1066         return ERROR_OK;
1067 }
1068
1069 /* usage: target_script <target#> <event> <script_file> */
1070 int handle_target_script_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1071 {
1072         target_t *target = NULL;
1073         
1074         if (argc < 3)
1075         {
1076                 ERROR("incomplete target_script command");
1077                 exit(-1);
1078         }
1079         
1080         target = get_target_by_num(strtoul(args[0], NULL, 0));
1081         
1082         if (!target)
1083         {
1084                 ERROR("target number '%s' not defined", args[0]);
1085                 exit(-1);
1086         }
1087         
1088         if (strcmp(args[1], "reset") == 0)
1089         {
1090                 if (target->reset_script)
1091                         free(target->reset_script);
1092                 target->reset_script = strdup(args[2]);
1093         }
1094         else if (strcmp(args[1], "post_halt") == 0)
1095         {
1096                 if (target->post_halt_script)
1097                         free(target->post_halt_script);
1098                 target->post_halt_script = strdup(args[2]);
1099         }
1100         else if (strcmp(args[1], "pre_resume") == 0)
1101         {
1102                 if (target->pre_resume_script)
1103                         free(target->pre_resume_script);
1104                 target->pre_resume_script = strdup(args[2]);
1105         }
1106         else
1107         {
1108                 ERROR("unknown event type: '%s", args[1]);
1109                 exit(-1);       
1110         }
1111         
1112         return ERROR_OK;
1113 }
1114
1115 int handle_run_and_halt_time_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1116 {
1117         target_t *target = NULL;
1118         
1119         if (argc < 2)
1120         {
1121                 ERROR("incomplete run_and_halt_time command");
1122                 exit(-1);
1123         }
1124         
1125         target = get_target_by_num(strtoul(args[0], NULL, 0));
1126         
1127         if (!target)
1128         {
1129                 ERROR("target number '%s' not defined", args[0]);
1130                 exit(-1);
1131         }
1132         
1133         target->run_and_halt_time = strtoul(args[1], NULL, 0);
1134         
1135         return ERROR_OK;
1136 }
1137
1138 int handle_working_area_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1139 {
1140         target_t *target = NULL;
1141         
1142         if (argc < 4)
1143         {
1144                 ERROR("incomplete working_area command. usage: working_area <target#> <address> <size> <'backup'|'nobackup'>");
1145                 exit(-1);
1146         }
1147         
1148         target = get_target_by_num(strtoul(args[0], NULL, 0));
1149         
1150         if (!target)
1151         {
1152                 ERROR("target number '%s' not defined", args[0]);
1153                 exit(-1);
1154         }
1155         
1156         target->working_area = strtoul(args[1], NULL, 0);
1157         target->working_area_size = strtoul(args[2], NULL, 0);
1158         
1159         if (strcmp(args[3], "backup") == 0)
1160         {
1161                 target->backup_working_area = 1;
1162         }
1163         else if (strcmp(args[3], "nobackup") == 0)
1164         {
1165                 target->backup_working_area = 0;
1166         }
1167         else
1168         {
1169                 ERROR("unrecognized <backup|nobackup> argument (%s)", args[3]);
1170                 exit(-1);
1171         }
1172         
1173         return ERROR_OK;
1174 }
1175
1176
1177 /* process target state changes */
1178 int handle_target(void *priv)
1179 {
1180         int retval;
1181         target_t *target = targets;
1182         
1183         while (target)
1184         {
1185                 /* only poll if target isn't already halted */
1186                 if (target->state != TARGET_HALTED)
1187                 {
1188                         if (target_continous_poll)
1189                                 if ((retval = target->type->poll(target)) < 0)
1190                                 {
1191                                         ERROR("couldn't poll target, exiting");
1192                                         exit(-1);
1193                                 }
1194                 }
1195         
1196                 target = target->next;
1197         }
1198         
1199         return ERROR_OK;
1200 }
1201
1202 int handle_reg_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1203 {
1204         target_t *target;
1205         reg_t *reg = NULL;
1206         int count = 0;
1207         char *value;
1208         
1209         DEBUG("-");
1210         
1211         target = get_current_target(cmd_ctx);
1212         
1213         /* list all available registers for the current target */
1214         if (argc == 0)
1215         {
1216                 reg_cache_t *cache = target->reg_cache;
1217                 
1218                 count = 0;
1219                 while(cache)
1220                 {
1221                         int i;
1222                         for (i = 0; i < cache->num_regs; i++)
1223                         {
1224                                 value = buf_to_str(cache->reg_list[i].value, cache->reg_list[i].size, 16);
1225                                 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);
1226                                 free(value);
1227                         }
1228                         cache = cache->next;
1229                 }
1230                 
1231                 return ERROR_OK;
1232         }
1233         
1234         /* access a single register by its ordinal number */
1235         if ((args[0][0] >= '0') && (args[0][0] <= '9'))
1236         {
1237                 int num = strtoul(args[0], NULL, 0);
1238                 reg_cache_t *cache = target->reg_cache;
1239                 
1240                 count = 0;
1241                 while(cache)
1242                 {
1243                         int i;
1244                         for (i = 0; i < cache->num_regs; i++)
1245                         {
1246                                 if (count++ == num)
1247                                 {
1248                                         reg = &cache->reg_list[i];
1249                                         break;
1250                                 }
1251                         }
1252                         if (reg)
1253                                 break;
1254                         cache = cache->next;
1255                 }
1256                 
1257                 if (!reg)
1258                 {
1259                         command_print(cmd_ctx, "%i is out of bounds, the current target has only %i registers (0 - %i)", num, count, count - 1);
1260                         return ERROR_OK;
1261                 }
1262         } else /* access a single register by its name */
1263         {
1264                 reg = register_get_by_name(target->reg_cache, args[0], 1);
1265                 
1266                 if (!reg)
1267                 {
1268                         command_print(cmd_ctx, "register %s not found in current target", args[0]);
1269                         return ERROR_OK;
1270                 }
1271         }
1272
1273         /* display a register */
1274         if ((argc == 1) || ((argc == 2) && !((args[1][0] >= '0') && (args[1][0] <= '9'))))
1275         {
1276                 if ((argc == 2) && (strcmp(args[1], "force") == 0))
1277                         reg->valid = 0;
1278                 
1279                 if (reg->valid == 0)
1280                 {
1281                         reg_arch_type_t *arch_type = register_get_arch_type(reg->arch_type);
1282                         if (arch_type == NULL)
1283                         {
1284                                 ERROR("BUG: encountered unregistered arch type");
1285                                 return ERROR_OK;
1286                         }
1287                         arch_type->get(reg);
1288                 }
1289                 value = buf_to_str(reg->value, reg->size, 16);
1290                 command_print(cmd_ctx, "%s (/%i): 0x%s", reg->name, reg->size, value);
1291                 free(value);
1292                 return ERROR_OK;
1293         }
1294         
1295         /* set register value */
1296         if (argc == 2)
1297         {
1298                 u8 *buf = malloc(CEIL(reg->size, 8));
1299                 str_to_buf(args[1], strlen(args[1]), buf, reg->size, 0);
1300
1301                 reg_arch_type_t *arch_type = register_get_arch_type(reg->arch_type);
1302                 if (arch_type == NULL)
1303                 {
1304                         ERROR("BUG: encountered unregistered arch type");
1305                         return ERROR_OK;
1306                 }
1307                 
1308                 arch_type->set(reg, buf);
1309                 
1310                 value = buf_to_str(reg->value, reg->size, 16);
1311                 command_print(cmd_ctx, "%s (/%i): 0x%s", reg->name, reg->size, value);
1312                 free(value);
1313                 
1314                 free(buf);
1315                 
1316                 return ERROR_OK;
1317         }
1318         
1319         command_print(cmd_ctx, "usage: reg <#|name> [value]");
1320         
1321         return ERROR_OK;
1322 }
1323
1324 int handle_poll_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1325 {
1326         target_t *target = get_current_target(cmd_ctx);
1327         char buffer[512];
1328
1329         if (argc == 0)
1330         {
1331                 command_print(cmd_ctx, "target state: %s", target_state_strings[target->type->poll(target)]);
1332                 if (target->state == TARGET_HALTED)
1333                 {
1334                         target->type->arch_state(target, buffer, 512);
1335                         buffer[511] = 0;
1336                         command_print(cmd_ctx, "%s", buffer);
1337                 }
1338         }
1339         else
1340         {
1341                 if (strcmp(args[0], "on") == 0)
1342                 {
1343                         target_continous_poll = 1;
1344                 }
1345                 else if (strcmp(args[0], "off") == 0)
1346                 {
1347                         target_continous_poll = 0;
1348                 }
1349         }
1350         
1351         
1352         return ERROR_OK;
1353 }
1354
1355 int handle_wait_halt_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1356 {
1357         target_t *target = get_current_target(cmd_ctx);
1358         struct timeval timeout, now;
1359         
1360         gettimeofday(&timeout, NULL);
1361         if (!argc)
1362                 timeval_add_time(&timeout, 5, 0);
1363         else {
1364                 char *end;
1365
1366                 timeval_add_time(&timeout, strtoul(args[0], &end, 0), 0);
1367                 if (*end) {
1368                         command_print(cmd_ctx, "usage: wait_halt [seconds]");
1369                         return ERROR_OK;
1370                 }
1371         }
1372
1373         command_print(cmd_ctx, "waiting for target halted...");
1374
1375         while(target->type->poll(target))
1376         {
1377                 if (target->state == TARGET_HALTED)
1378                 {
1379                         command_print(cmd_ctx, "target halted");
1380                         break;
1381                 }
1382                 target_call_timer_callbacks();
1383                 
1384                 gettimeofday(&now, NULL);
1385                 if ((now.tv_sec >= timeout.tv_sec) && (now.tv_usec >= timeout.tv_usec))
1386                 {
1387                         command_print(cmd_ctx, "timed out while waiting for target halt");
1388                         ERROR("timed out while waiting for target halt");
1389                         break;
1390                 }
1391         }
1392         
1393         return ERROR_OK;
1394 }
1395
1396 int handle_halt_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1397 {
1398         int retval;
1399         target_t *target = get_current_target(cmd_ctx);
1400
1401         DEBUG("-");
1402         
1403         command_print(cmd_ctx, "requesting target halt...");
1404
1405         if ((retval = target->type->halt(target)) != ERROR_OK)
1406         {       
1407                 switch (retval)
1408                 {
1409                         case ERROR_TARGET_ALREADY_HALTED:
1410                                 command_print(cmd_ctx, "target already halted");
1411                                 break;
1412                         case ERROR_TARGET_TIMEOUT:
1413                                 command_print(cmd_ctx, "target timed out... shutting down");
1414                                 exit(-1);
1415                         default:
1416                                 command_print(cmd_ctx, "unknown error... shutting down");
1417                                 exit(-1);
1418                 }
1419         }
1420         
1421         return ERROR_OK;
1422
1423 }
1424
1425 /* what to do on daemon startup */
1426 int handle_daemon_startup_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1427 {
1428         if (argc == 1)
1429         {
1430                 if (strcmp(args[0], "attach") == 0)
1431                 {
1432                         startup_mode = DAEMON_ATTACH;
1433                         return ERROR_OK;
1434                 }
1435                 else if (strcmp(args[0], "reset") == 0)
1436                 {
1437                         startup_mode = DAEMON_RESET;
1438                         return ERROR_OK;
1439                 }
1440         }
1441         
1442         WARNING("invalid daemon_startup configuration directive: %s", args[0]);
1443         return ERROR_OK;
1444
1445 }
1446                 
1447 int handle_soft_reset_halt_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1448 {
1449         target_t *target = get_current_target(cmd_ctx);
1450         int retval;
1451         
1452         command_print(cmd_ctx, "requesting target halt and executing a soft reset");
1453         
1454         if ((retval = target->type->soft_reset_halt(target)) != ERROR_OK)
1455         {       
1456                 switch (retval)
1457                 {
1458                         case ERROR_TARGET_TIMEOUT:
1459                                 command_print(cmd_ctx, "target timed out... shutting down");
1460                                 exit(-1);
1461                         default:
1462                                 command_print(cmd_ctx, "unknown error... shutting down");
1463                                 exit(-1);
1464                 }
1465         }
1466         
1467         return ERROR_OK;
1468 }
1469
1470 int handle_reset_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1471 {
1472         target_t *target = get_current_target(cmd_ctx);
1473         enum target_reset_mode reset_mode = RESET_RUN;
1474         
1475         DEBUG("-");
1476         
1477         if (argc >= 1)
1478         {
1479                 if (strcmp("run", args[0]) == 0)
1480                         reset_mode = RESET_RUN;
1481                 else if (strcmp("halt", args[0]) == 0)
1482                         reset_mode = RESET_HALT;
1483                 else if (strcmp("init", args[0]) == 0)
1484                         reset_mode = RESET_INIT;
1485                 else if (strcmp("run_and_halt", args[0]) == 0)
1486                 {
1487                         reset_mode = RESET_RUN_AND_HALT;
1488                         if (argc >= 2)
1489                         {
1490                                 target->run_and_halt_time = strtoul(args[1], NULL, 0);
1491                         }
1492                 }
1493                 else if (strcmp("run_and_init", args[0]) == 0)
1494                 {
1495                         reset_mode = RESET_RUN_AND_INIT;
1496                         if (argc >= 2)
1497                         {
1498                                 target->run_and_halt_time = strtoul(args[1], NULL, 0);
1499                         }
1500                 }
1501                 else
1502                 {
1503                         command_print(cmd_ctx, "usage: reset ['run', 'halt', 'init', 'run_and_halt', 'run_and_init]");
1504                         return ERROR_OK;
1505                 }
1506                 target->reset_mode = reset_mode;
1507         }
1508         
1509         target_process_reset(cmd_ctx);
1510         
1511         return ERROR_OK;
1512 }
1513
1514 int handle_resume_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1515 {
1516         int retval;
1517         target_t *target = get_current_target(cmd_ctx);
1518         
1519         DEBUG("-");
1520         
1521         if (argc == 0)
1522                 retval = target->type->resume(target, 1, 0, 1, 0); /* current pc, addr = 0, handle breakpoints, not debugging */
1523         else if (argc == 1)
1524                 retval = target->type->resume(target, 0, strtoul(args[0], NULL, 0), 1, 0); /* addr = args[0], handle breakpoints, not debugging */
1525         else
1526         {
1527                 command_print(cmd_ctx, "usage: resume [address]");
1528                 return ERROR_OK;
1529         }
1530         
1531         if (retval != ERROR_OK)
1532         {       
1533                 switch (retval)
1534                 {
1535                         case ERROR_TARGET_NOT_HALTED:
1536                                 command_print(cmd_ctx, "target not halted");
1537                                 break;
1538                         default:
1539                                 command_print(cmd_ctx, "unknown error... shutting down");
1540                                 exit(-1);
1541                 }
1542         }
1543
1544         return ERROR_OK;
1545 }
1546
1547 int handle_step_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1548 {
1549         target_t *target = get_current_target(cmd_ctx);
1550         
1551         DEBUG("-");
1552         
1553         if (argc == 0)
1554                 target->type->step(target, 1, 0, 1); /* current pc, addr = 0, handle breakpoints */
1555
1556         if (argc == 1)
1557                 target->type->step(target, 0, strtoul(args[0], NULL, 0), 1); /* addr = args[0], handle breakpoints */
1558         
1559         return ERROR_OK;
1560 }
1561
1562 int handle_md_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1563 {
1564         int count = 1;
1565         int size = 4;
1566         u32 address = 0;
1567         int i;
1568
1569         char output[128];
1570         int output_len;
1571
1572         int retval;
1573
1574         u8 *buffer;
1575         target_t *target = get_current_target(cmd_ctx);
1576
1577         if (argc < 1)
1578                 return ERROR_OK;
1579
1580         if (argc == 2)
1581                 count = strtoul(args[1], NULL, 0);
1582
1583         address = strtoul(args[0], NULL, 0);
1584         
1585
1586         switch (cmd[2])
1587         {
1588                 case 'w':
1589                         size = 4;
1590                         break;
1591                 case 'h':
1592                         size = 2;
1593                         break;
1594                 case 'b':
1595                         size = 1;
1596                         break;
1597                 default:
1598                         return ERROR_OK;
1599         }
1600
1601         buffer = calloc(count, size);
1602         if ((retval  = target->type->read_memory(target, address, size, count, buffer)) != ERROR_OK)
1603         {
1604                 switch (retval)
1605                 {
1606                         case ERROR_TARGET_UNALIGNED_ACCESS:
1607                                 command_print(cmd_ctx, "error: address not aligned");
1608                                 break;
1609                         case ERROR_TARGET_NOT_HALTED:
1610                                 command_print(cmd_ctx, "error: target must be halted for memory accesses");
1611                                 break;                  
1612                         case ERROR_TARGET_DATA_ABORT:
1613                                 command_print(cmd_ctx, "error: access caused data abort, system possibly corrupted");
1614                                 break;
1615                         default:
1616                                 command_print(cmd_ctx, "error: unknown error");
1617                                 break;
1618                 }
1619                 return ERROR_OK;
1620         }
1621
1622         output_len = 0;
1623
1624         for (i = 0; i < count; i++)
1625         {
1626                 if (i%8 == 0)
1627                         output_len += snprintf(output + output_len, 128 - output_len, "0x%8.8x: ", address + (i*size));
1628                 
1629                 switch (size)
1630                 {
1631                         case 4:
1632                                 output_len += snprintf(output + output_len, 128 - output_len, "%8.8x ", target_buffer_get_u32(target, &buffer[i*4]));
1633                                 break;
1634                         case 2:
1635                                 output_len += snprintf(output + output_len, 128 - output_len, "%4.4x ", target_buffer_get_u16(target, &buffer[i*2]));
1636                                 break;
1637                         case 1:
1638                                 output_len += snprintf(output + output_len, 128 - output_len, "%2.2x ", buffer[i*1]);
1639                                 break;
1640                 }
1641
1642                 if ((i%8 == 7) || (i == count - 1))
1643                 {
1644                         command_print(cmd_ctx, output);
1645                         output_len = 0;
1646                 }
1647         }
1648
1649         free(buffer);
1650         
1651         return ERROR_OK;
1652 }
1653
1654 int handle_mw_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1655 {
1656         u32 address = 0;
1657         u32 value = 0;
1658         int retval;
1659         target_t *target = get_current_target(cmd_ctx);
1660         u8 value_buf[4];
1661
1662         if (argc < 2)
1663                 return ERROR_OK;
1664
1665         address = strtoul(args[0], NULL, 0);
1666         value = strtoul(args[1], NULL, 0);
1667
1668         switch (cmd[2])
1669         {
1670                 case 'w':
1671                         target_buffer_set_u32(target, value_buf, value);
1672                         retval = target->type->write_memory(target, address, 4, 1, value_buf);
1673                         break;
1674                 case 'h':
1675                         target_buffer_set_u16(target, value_buf, value);
1676                         retval = target->type->write_memory(target, address, 2, 1, value_buf);
1677                         break;
1678                 case 'b':
1679                         value_buf[0] = value;
1680                         retval = target->type->write_memory(target, address, 1, 1, value_buf);
1681                         break;
1682                 default:
1683                         return ERROR_OK;
1684         }
1685
1686         switch (retval)
1687         {
1688                 case ERROR_TARGET_UNALIGNED_ACCESS:
1689                         command_print(cmd_ctx, "error: address not aligned");
1690                         break;
1691                 case ERROR_TARGET_DATA_ABORT:
1692                         command_print(cmd_ctx, "error: access caused data abort, system possibly corrupted");
1693                         break;
1694                 case ERROR_TARGET_NOT_HALTED:
1695                         command_print(cmd_ctx, "error: target must be halted for memory accesses");
1696                         break;
1697                 case ERROR_OK:
1698                         break;
1699                 default:
1700                         command_print(cmd_ctx, "error: unknown error");
1701                         break;
1702         }
1703
1704         return ERROR_OK;
1705
1706 }
1707
1708 int handle_load_image_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1709 {
1710         u8 *buffer;
1711         u32 buf_cnt;
1712         u32 image_size;
1713         int i;
1714         int retval;
1715
1716         image_t image;  
1717         
1718         duration_t duration;
1719         char *duration_text;
1720         
1721         target_t *target = get_current_target(cmd_ctx);
1722
1723         if (argc < 1)
1724         {
1725                 command_print(cmd_ctx, "usage: load_image <filename> [address] [type]");
1726                 return ERROR_OK;
1727         }
1728         
1729         /* a base address isn't always necessary, default to 0x0 (i.e. don't relocate) */
1730         if (argc >= 2)
1731         {
1732                 image.base_address_set = 1;
1733                 image.base_address = strtoul(args[1], NULL, 0);
1734         }
1735         else
1736         {
1737                 image.base_address_set = 0;
1738         }
1739         
1740         image.start_address_set = 0;
1741
1742         duration_start_measure(&duration);
1743         
1744         if (image_open(&image, args[0], (argc >= 3) ? args[2] : NULL) != ERROR_OK)
1745         {
1746                 command_print(cmd_ctx, "load_image error: %s", image.error_str);
1747                 return ERROR_OK;
1748         }
1749         
1750         image_size = 0x0;
1751         for (i = 0; i < image.num_sections; i++)
1752         {
1753                 buffer = malloc(image.sections[i].size);
1754                 if ((retval = image_read_section(&image, i, 0x0, image.sections[i].size, buffer, &buf_cnt)) != ERROR_OK)
1755                 {
1756                         ERROR("image_read_section failed with error code: %i", retval);
1757                         command_print(cmd_ctx, "image reading failed, download aborted");
1758                         free(buffer);
1759                         image_close(&image);
1760                         return ERROR_OK;
1761                 }
1762                 target_write_buffer(target, image.sections[i].base_address, buf_cnt, buffer);
1763                 image_size += buf_cnt;
1764                 command_print(cmd_ctx, "%u byte written at address 0x%8.8x", buf_cnt, image.sections[i].base_address);
1765                 
1766                 free(buffer);
1767         }
1768
1769         duration_stop_measure(&duration, &duration_text);
1770         command_print(cmd_ctx, "downloaded %u byte in %s", image_size, duration_text);
1771         free(duration_text);
1772         
1773         image_close(&image);
1774
1775         return ERROR_OK;
1776
1777 }
1778
1779 int handle_dump_image_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1780 {
1781         fileio_t fileio;
1782         
1783         u32 address;
1784         u32 size;
1785         u8 buffer[560];
1786         
1787         duration_t duration;
1788         char *duration_text;
1789         
1790         target_t *target = get_current_target(cmd_ctx);
1791
1792         if (argc != 3)
1793         {
1794                 command_print(cmd_ctx, "usage: dump_image <filename> <address> <size>");
1795                 return ERROR_OK;
1796         }
1797
1798         address = strtoul(args[1], NULL, 0);
1799         size = strtoul(args[2], NULL, 0);
1800
1801         if ((address & 3) || (size & 3))
1802         {
1803                 command_print(cmd_ctx, "only 32-bit aligned address and size are supported");
1804                 return ERROR_OK;
1805         }
1806         
1807         if (fileio_open(&fileio, args[0], FILEIO_WRITE, FILEIO_BINARY) != ERROR_OK)
1808         {
1809                 command_print(cmd_ctx, "dump_image error: %s", fileio.error_str);
1810                 return ERROR_OK;
1811         }
1812         
1813         duration_start_measure(&duration);
1814         
1815         while (size > 0)
1816         {
1817                 u32 size_written;
1818                 u32 this_run_size = (size > 560) ? 560 : size;
1819                 
1820                 target->type->read_memory(target, address, 4, this_run_size / 4, buffer);
1821                 fileio_write(&fileio, this_run_size, buffer, &size_written);
1822                 
1823                 size -= this_run_size;
1824                 address += this_run_size;
1825         }
1826
1827         fileio_close(&fileio);
1828
1829         duration_stop_measure(&duration, &duration_text);
1830         command_print(cmd_ctx, "dumped %"PRIi64" byte in %s", fileio.size, duration_text);
1831         free(duration_text);
1832         
1833         return ERROR_OK;
1834
1835 }
1836
1837 int handle_verify_image_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1838 {
1839         u8 *buffer;
1840         u32 buf_cnt;
1841         u32 image_size;
1842         int i;
1843         int retval;
1844         u32 checksum = 0;
1845         u32 mem_checksum = 0;
1846
1847         image_t image;  
1848         
1849         duration_t duration;
1850         char *duration_text;
1851         
1852         target_t *target = get_current_target(cmd_ctx);
1853         
1854         if (argc < 1)
1855         {
1856                 command_print(cmd_ctx, "usage: verify_image <file> [offset] [type]");
1857                 return ERROR_OK;
1858         }
1859         
1860         if (!target)
1861         {
1862                 ERROR("no target selected");
1863                 return ERROR_OK;
1864         }
1865         
1866         duration_start_measure(&duration);
1867         
1868         if (argc >= 2)
1869         {
1870                 image.base_address_set = 1;
1871                 image.base_address = strtoul(args[1], NULL, 0);
1872         }
1873         else
1874         {
1875                 image.base_address_set = 0;
1876                 image.base_address = 0x0;
1877         }
1878         
1879         image.start_address_set = 0;
1880
1881         if (image_open(&image, args[0], (argc == 3) ? args[2] : NULL) != ERROR_OK)
1882         {
1883                 command_print(cmd_ctx, "verify_image error: %s", image.error_str);
1884                 return ERROR_OK;
1885         }
1886         
1887         image_size = 0x0;
1888         for (i = 0; i < image.num_sections; i++)
1889         {
1890                 buffer = malloc(image.sections[i].size);
1891                 if ((retval = image_read_section(&image, i, 0x0, image.sections[i].size, buffer, &buf_cnt)) != ERROR_OK)
1892                 {
1893                         ERROR("image_read_section failed with error code: %i", retval);
1894                         command_print(cmd_ctx, "image reading failed, verify aborted");
1895                         free(buffer);
1896                         image_close(&image);
1897                         return ERROR_OK;
1898                 }
1899                 
1900                 /* calculate checksum of image */
1901                 image_calculate_checksum( buffer, buf_cnt, &checksum );
1902                 free(buffer);
1903                 
1904                 retval = target_checksum_memory(target, image.sections[i].base_address, buf_cnt, &mem_checksum);
1905                 
1906                 if( retval != ERROR_OK )
1907                 {
1908                         command_print(cmd_ctx, "image verify failed, verify aborted");
1909                         image_close(&image);
1910                         return ERROR_OK;
1911                 }
1912                 
1913                 if( checksum != mem_checksum )
1914                 {
1915                         command_print(cmd_ctx, "image verify failed, verify aborted");
1916                         image_close(&image);
1917                         return ERROR_OK;
1918                 }
1919                         
1920                 image_size += buf_cnt;
1921         }
1922
1923         duration_stop_measure(&duration, &duration_text);
1924         command_print(cmd_ctx, "verified %u bytes in %s", image_size, duration_text);
1925         free(duration_text);
1926         
1927         image_close(&image);
1928         
1929         return ERROR_OK;
1930 }
1931
1932 int handle_bp_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1933 {
1934         int retval;
1935         target_t *target = get_current_target(cmd_ctx);
1936
1937         if (argc == 0)
1938         {
1939                 breakpoint_t *breakpoint = target->breakpoints;
1940
1941                 while (breakpoint)
1942                 {
1943                         if (breakpoint->type == BKPT_SOFT)
1944                         {
1945                                 char* buf = buf_to_str(breakpoint->orig_instr, breakpoint->length, 16);
1946                                 command_print(cmd_ctx, "0x%8.8x, 0x%x, %i, 0x%s", breakpoint->address, breakpoint->length, breakpoint->set, buf);
1947                                 free(buf);
1948                         }
1949                         else
1950                         {
1951                                 command_print(cmd_ctx, "0x%8.8x, 0x%x, %i", breakpoint->address, breakpoint->length, breakpoint->set);
1952                         }
1953                         breakpoint = breakpoint->next;
1954                 }
1955         }
1956         else if (argc >= 2)
1957         {
1958                 int hw = BKPT_SOFT;
1959                 u32 length = 0;
1960
1961                 length = strtoul(args[1], NULL, 0);
1962                 
1963                 if (argc >= 3)
1964                         if (strcmp(args[2], "hw") == 0)
1965                                 hw = BKPT_HARD;
1966
1967                 if ((retval = breakpoint_add(target, strtoul(args[0], NULL, 0), length, hw)) != ERROR_OK)
1968                 {
1969                         switch (retval)
1970                         {
1971                                 case ERROR_TARGET_NOT_HALTED:
1972                                         command_print(cmd_ctx, "target must be halted to set breakpoints");
1973                                         break;
1974                                 case ERROR_TARGET_RESOURCE_NOT_AVAILABLE:
1975                                         command_print(cmd_ctx, "no more breakpoints available");
1976                                         break;
1977                                 default:
1978                                         command_print(cmd_ctx, "unknown error, breakpoint not set");
1979                                         break;
1980                         }
1981                 }
1982                 else
1983                 {
1984                         command_print(cmd_ctx, "breakpoint added at address 0x%8.8x", strtoul(args[0], NULL, 0));
1985                 }
1986         }
1987         else
1988         {
1989                 command_print(cmd_ctx, "usage: bp <address> <length> ['hw']");
1990         }
1991
1992         return ERROR_OK;
1993 }
1994
1995 int handle_rbp_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1996 {
1997         target_t *target = get_current_target(cmd_ctx);
1998
1999         if (argc > 0)
2000                 breakpoint_remove(target, strtoul(args[0], NULL, 0));
2001
2002         return ERROR_OK;
2003 }
2004
2005 int handle_wp_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2006 {
2007         target_t *target = get_current_target(cmd_ctx);
2008         int retval;
2009
2010         if (argc == 0)
2011         {
2012                 watchpoint_t *watchpoint = target->watchpoints;
2013
2014                 while (watchpoint)
2015                 {
2016                         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);
2017                         watchpoint = watchpoint->next;
2018                 }
2019         } 
2020         else if (argc >= 2)
2021         {
2022                 enum watchpoint_rw type = WPT_ACCESS;
2023                 u32 data_value = 0x0;
2024                 u32 data_mask = 0xffffffff;
2025                 
2026                 if (argc >= 3)
2027                 {
2028                         switch(args[2][0])
2029                         {
2030                                 case 'r':
2031                                         type = WPT_READ;
2032                                         break;
2033                                 case 'w':
2034                                         type = WPT_WRITE;
2035                                         break;
2036                                 case 'a':
2037                                         type = WPT_ACCESS;
2038                                         break;
2039                                 default:
2040                                         command_print(cmd_ctx, "usage: wp <address> <length> [r/w/a] [value] [mask]");
2041                                         return ERROR_OK;
2042                         }
2043                 }
2044                 if (argc >= 4)
2045                 {
2046                         data_value = strtoul(args[3], NULL, 0);
2047                 }
2048                 if (argc >= 5)
2049                 {
2050                         data_mask = strtoul(args[4], NULL, 0);
2051                 }
2052                 
2053                 if ((retval = watchpoint_add(target, strtoul(args[0], NULL, 0),
2054                                 strtoul(args[1], NULL, 0), type, data_value, data_mask)) != ERROR_OK)
2055                 {
2056                         switch (retval)
2057                         {
2058                                 case ERROR_TARGET_NOT_HALTED:
2059                                         command_print(cmd_ctx, "target must be halted to set watchpoints");
2060                                         break;
2061                                 case ERROR_TARGET_RESOURCE_NOT_AVAILABLE:
2062                                         command_print(cmd_ctx, "no more watchpoints available");
2063                                         break;
2064                                 default:
2065                                         command_print(cmd_ctx, "unknown error, watchpoint not set");
2066                                         break;
2067                         }       
2068                 }
2069         }
2070         else
2071         {
2072                 command_print(cmd_ctx, "usage: wp <address> <length> [r/w/a] [value] [mask]");
2073         }
2074                 
2075         return ERROR_OK;
2076 }
2077
2078 int handle_rwp_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2079 {
2080         target_t *target = get_current_target(cmd_ctx);
2081
2082         if (argc > 0)
2083                 watchpoint_remove(target, strtoul(args[0], NULL, 0));
2084         
2085         return ERROR_OK;
2086 }
2087
openocd with support for Altus Metrum targets