target.c 64.3 KB
Newer Older
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
/***************************************************************************
 *   Copyright (C) 2005 by Dominic Rath                                    *
 *   Dominic.Rath@gmx.de                                                   *
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 *   This program is distributed in the hope that it will be useful,       *
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
 *   GNU General Public License for more details.                          *
 *                                                                         *
 *   You should have received a copy of the GNU General Public License     *
 *   along with this program; if not, write to the                         *
 *   Free Software Foundation, Inc.,                                       *
 *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
 ***************************************************************************/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#include "replacements.h"
#include "target.h"
#include "target_request.h"

#include "log.h"
#include "configuration.h"
#include "binarybuffer.h"
#include "jtag.h"

#include <string.h>
#include <stdlib.h>
#include <inttypes.h>

#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <errno.h>

#include <sys/time.h>
#include <time.h>

#include <time_support.h>

#include <fileio.h>
#include <image.h>

int cli_target_callback_event_handler(struct target_s *target, enum target_event event, void *priv);


int handle_target_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
int handle_targets_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);

int handle_target_script_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
int handle_run_and_halt_time_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
int handle_working_area_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);

int handle_reg_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
int handle_poll_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
int handle_halt_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
int handle_wait_halt_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
int handle_reset_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
int handle_soft_reset_halt_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
int handle_resume_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
int handle_step_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
int handle_md_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
int handle_mw_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
int handle_load_image_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
int handle_dump_image_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
int handle_verify_image_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
int handle_bp_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
int handle_rbp_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
int handle_wp_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
int handle_rwp_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
int handle_virt2phys_command(command_context_t *cmd_ctx, char *cmd, char **args, int argc);
78
int handle_profile_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
79
80
81
82
83
84
85
86
87
88
89
90

/* targets
 */
extern target_type_t arm7tdmi_target;
extern target_type_t arm720t_target;
extern target_type_t arm9tdmi_target;
extern target_type_t arm920t_target;
extern target_type_t arm966e_target;
extern target_type_t arm926ejs_target;
extern target_type_t feroceon_target;
extern target_type_t xscale_target;
extern target_type_t cortexm3_target;
oharboe's avatar
oharboe committed
91
extern target_type_t arm11_target;
92
93
94
95
96
97
98
99
100
101
102
103

target_type_t *target_types[] =
{
	&arm7tdmi_target,
	&arm9tdmi_target,
	&arm920t_target,
	&arm720t_target,
	&arm966e_target,
	&arm926ejs_target,
	&feroceon_target,
	&xscale_target,
	&cortexm3_target,
oharboe's avatar
oharboe committed
104
	&arm11_target,
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
	NULL,
};

target_t *targets = NULL;
target_event_callback_t *target_event_callbacks = NULL;
target_timer_callback_t *target_timer_callbacks = NULL;

char *target_state_strings[] =
{
	"unknown",
	"running",
	"halted",
	"reset",
	"debug_running",
};

char *target_debug_reason_strings[] =
{
	"debug request", "breakpoint", "watchpoint",
	"watchpoint and breakpoint", "single step",
125
	"target not halted", "undefined"
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
};

char *target_endianess_strings[] =
{
	"big endian",
	"little endian",
};

static int target_continous_poll = 1;

/* read a u32 from a buffer in target memory endianness */
u32 target_buffer_get_u32(target_t *target, u8 *buffer)
{
	if (target->endianness == TARGET_LITTLE_ENDIAN)
		return le_to_h_u32(buffer);
	else
		return be_to_h_u32(buffer);
}

/* read a u16 from a buffer in target memory endianness */
u16 target_buffer_get_u16(target_t *target, u8 *buffer)
{
	if (target->endianness == TARGET_LITTLE_ENDIAN)
		return le_to_h_u16(buffer);
	else
		return be_to_h_u16(buffer);
}

/* write a u32 to a buffer in target memory endianness */
void target_buffer_set_u32(target_t *target, u8 *buffer, u32 value)
{
	if (target->endianness == TARGET_LITTLE_ENDIAN)
		h_u32_to_le(buffer, value);
	else
		h_u32_to_be(buffer, value);
}

/* write a u16 to a buffer in target memory endianness */
void target_buffer_set_u16(target_t *target, u8 *buffer, u16 value)
{
	if (target->endianness == TARGET_LITTLE_ENDIAN)
		h_u16_to_le(buffer, value);
	else
		h_u16_to_be(buffer, value);
}

/* returns a pointer to the n-th configured target */
target_t* get_target_by_num(int num)
{
	target_t *target = targets;
	int i = 0;

	while (target)
	{
		if (num == i)
			return target;
		target = target->next;
		i++;
	}

	return NULL;
}

int get_num_by_target(target_t *query_target)
{
	target_t *target = targets;
	int i = 0;	
	
	while (target)
	{
		if (target == query_target)
			return i;
		target = target->next;
		i++;
	}
	
	return -1;
}

target_t* get_current_target(command_context_t *cmd_ctx)
{
	target_t *target = get_target_by_num(cmd_ctx->current_target);
	
	if (target == NULL)
	{
211
		LOG_ERROR("BUG: current_target out of bounds");
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
		exit(-1);
	}
	
	return target;
}

/* Process target initialization, when target entered debug out of reset
 * the handler is unregistered at the end of this function, so it's only called once
 */
int target_init_handler(struct target_s *target, enum target_event event, void *priv)
{
	FILE *script;
	struct command_context_s *cmd_ctx = priv;
	
	if ((event == TARGET_EVENT_HALTED) && (target->reset_script))
	{
		target_unregister_event_callback(target_init_handler, priv);

230
		script = open_file_from_path(target->reset_script, "r");
231
232
		if (!script)
		{
233
			LOG_ERROR("couldn't open script file %s", target->reset_script);
234
235
236
				return ERROR_OK;
		}

237
		LOG_INFO("executing reset script '%s'", target->reset_script);
238
239
240
241
242
243
244
245
246
247
248
249
250
		command_run_file(cmd_ctx, script, COMMAND_EXEC);
		fclose(script);

		jtag_execute_queue();
	}
	
	return ERROR_OK;
}

int target_run_and_halt_handler(void *priv)
{
	target_t *target = priv;
	
251
	target_halt(target);
252
253
254
255
	
	return ERROR_OK;
}

256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
int target_poll(struct target_s *target)
{
	/* We can't poll until after examine */
	if (!target->type->examined)
	{
		/* Fail silently lest we pollute the log */
		return ERROR_FAIL;
	}
	return target->type->poll(target);
}

int target_halt(struct target_s *target)
{
	/* We can't poll until after examine */
	if (!target->type->examined)
	{
		LOG_ERROR("Target not examined yet");
		return ERROR_FAIL;
	}
	return target->type->halt(target);
}

int target_resume(struct target_s *target, int current, u32 address, int handle_breakpoints, int debug_execution)
{
	/* We can't poll until after examine */
	if (!target->type->examined)
	{
		LOG_ERROR("Target not examined yet");
		return ERROR_FAIL;
	}
	return target->type->resume(target, current, address, handle_breakpoints, debug_execution);
}


290
291
292
293
294
int target_process_reset(struct command_context_s *cmd_ctx)
{
	int retval = ERROR_OK;
	target_t *target;
	struct timeval timeout, now;
295
296
297

	jtag->speed(jtag_speed);

298
299
300
	if ((retval = jtag_init_reset(cmd_ctx)) != ERROR_OK)
		return retval;
	
301
302
303
	if ((retval = target_examine(cmd_ctx)) != ERROR_OK)
		return retval;
	
304
305
306
307
308
309
310
311
312
	/* prepare reset_halt where necessary */
	target = targets;
	while (target)
	{
		if (jtag_reset_config & RESET_SRST_PULLS_TRST)
		{
			switch (target->reset_mode)
			{
				case RESET_HALT:
313
					command_print(cmd_ctx, "nSRST pulls nTRST, falling back to \"reset run_and_halt\"");
314
315
316
					target->reset_mode = RESET_RUN_AND_HALT;
					break;
				case RESET_INIT:
317
					command_print(cmd_ctx, "nSRST pulls nTRST, falling back to \"reset run_and_init\"");
318
319
320
321
322
323
324
325
326
327
328
329
					target->reset_mode = RESET_RUN_AND_INIT;
					break;
				default:
					break;
			} 
		}
		target = target->next;
	}
	
	target = targets;
	while (target)
	{
oharboe's avatar
   
oharboe committed
330
331
332
333
		/* we have no idea what state the target is in, so we
		 * have to drop working areas
		 */
		target_free_all_working_areas_restore(target, 0);
334
335
336
		target->type->assert_reset(target);
		target = target->next;
	}
oharboe's avatar
   
oharboe committed
337
338
339
340
341
	if ((retval = jtag_execute_queue()) != ERROR_OK)
	{
		LOG_WARNING("JTAG communication failed asserting reset.");
		retval = ERROR_OK;
	}
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
	
	/* request target halt if necessary, and schedule further action */
	target = targets;
	while (target)
	{
		switch (target->reset_mode)
		{
			case RESET_RUN:
				/* nothing to do if target just wants to be run */
				break;
			case RESET_RUN_AND_HALT:
				/* schedule halt */
				target_register_timer_callback(target_run_and_halt_handler, target->run_and_halt_time, 0, target);
				break;
			case RESET_RUN_AND_INIT:
				/* schedule halt */
				target_register_timer_callback(target_run_and_halt_handler, target->run_and_halt_time, 0, target);
				target_register_event_callback(target_init_handler, cmd_ctx);
				break;
			case RESET_HALT:
362
				target_halt(target);
363
364
				break;
			case RESET_INIT:
365
				target_halt(target);
366
367
368
				target_register_event_callback(target_init_handler, cmd_ctx);
				break;
			default:
369
				LOG_ERROR("BUG: unknown target->reset_mode");
370
371
372
373
		}
		target = target->next;
	}
	
oharboe's avatar
   
oharboe committed
374
375
376
377
378
379
	if ((retval = jtag_execute_queue()) != ERROR_OK)
	{
		LOG_WARNING("JTAG communication failed while reset was asserted. Consider using srst_only for reset_config.");
		retval = ERROR_OK;		
	}
	
380
381
382
383
384
385
	target = targets;
	while (target)
	{
		target->type->deassert_reset(target);
		target = target->next;
	}
oharboe's avatar
   
oharboe committed
386
387
388
389
390
391
	
	if ((retval = jtag_execute_queue()) != ERROR_OK)
	{
		LOG_WARNING("JTAG communication failed while deasserting reset.");
		retval = ERROR_OK;
	}
392
	
oharboe's avatar
   
oharboe committed
393
394
	LOG_DEBUG("Waiting for halted stated as approperiate");
	
395
396
397
398
399
400
401
	/* Wait for reset to complete, maximum 5 seconds. */	
	gettimeofday(&timeout, NULL);
	timeval_add_time(&timeout, 5, 0);
	for(;;)
	{
		gettimeofday(&now, NULL);
		
402
		target_call_timer_callbacks_now();
403
404
405
406
		
		target = targets;
		while (target)
		{
oharboe's avatar
   
oharboe committed
407
			LOG_DEBUG("Polling target");
408
			target_poll(target);
oharboe's avatar
   
oharboe committed
409
410
411
412
			if ((target->reset_mode == RESET_RUN_AND_INIT) || 
					(target->reset_mode == RESET_RUN_AND_HALT) ||
					(target->reset_mode == RESET_HALT) ||
					(target->reset_mode == RESET_INIT))
413
414
415
416
417
			{
				if (target->state != TARGET_HALTED)
				{
					if ((now.tv_sec > timeout.tv_sec) || ((now.tv_sec == timeout.tv_sec) && (now.tv_usec >= timeout.tv_usec)))
					{
oharboe's avatar
   
oharboe committed
418
						LOG_USER("Timed out waiting for halt after reset");
419
420
						goto done;
					}
oharboe's avatar
oharboe committed
421
					/* this will send alive messages on e.g. GDB remote protocol. */
422
					usleep(500*1000); 
423
					LOG_USER_N("%s", ""); /* avoid warning about zero length formatting message*/ 
424
425
426
427
428
429
430
431
432
433
434
435
436
437
					goto again;
				}
			}
			target = target->next;
		}
		/* All targets we're waiting for are halted */
		break;
		
		again:;
	}
	done:
	
	
	/* We want any events to be processed before the prompt */
438
439
	target_call_timer_callbacks_now();

oharboe's avatar
   
oharboe committed
440
441
442
443
444
445
446
447
448
449
	/* if we timed out we need to unregister these handlers */
	target = targets;
	while (target)
	{
		target_unregister_timer_callback(target_run_and_halt_handler, target);
		target = target->next;
	}
	target_unregister_event_callback(target_init_handler, cmd_ctx);
				
	
450
	jtag->speed(jtag_speed_post_reset);
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
	
	return retval;
}

static int default_virt2phys(struct target_s *target, u32 virtual, u32 *physical)
{
	*physical = virtual;
	return ERROR_OK;
}

static int default_mmu(struct target_s *target, int *enabled)
{
	*enabled = 0;
	return ERROR_OK;
}

467
468
static int default_examine(struct command_context_s *cmd_ctx, struct target_s *target)
{
469
	target->type->examined = 1;
470
471
472
473
	return ERROR_OK;
}


474
475
476
477
478
/* Targets that correctly implement init+examine, i.e.
 * no communication with target during init:
 * 
 * XScale 
 */
479
480
481
482
483
484
485
486
487
488
489
490
int target_examine(struct command_context_s *cmd_ctx)
{
	int retval = ERROR_OK;
	target_t *target = targets;
	while (target)
	{
		if ((retval = target->type->examine(cmd_ctx, target))!=ERROR_OK)
			return retval;
		target = target->next;
	}
	return retval;
}
491

492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
static int target_write_memory_imp(struct target_s *target, u32 address, u32 size, u32 count, u8 *buffer)
{
	if (!target->type->examined)
	{
		LOG_ERROR("Target not examined yet");
		return ERROR_FAIL;
	}
	return target->type->write_memory_imp(target, address, size, count, buffer);
}

static int target_read_memory_imp(struct target_s *target, u32 address, u32 size, u32 count, u8 *buffer)
{
	if (!target->type->examined)
	{
		LOG_ERROR("Target not examined yet");
		return ERROR_FAIL;
	}
	return target->type->read_memory_imp(target, address, size, count, buffer);
}

static int target_soft_reset_halt_imp(struct target_s *target)
{
	if (!target->type->examined)
	{
		LOG_ERROR("Target not examined yet");
		return ERROR_FAIL;
	}
	return target->type->soft_reset_halt_imp(target);
}

static int target_run_algorithm_imp(struct target_s *target, int num_mem_params, mem_param_t *mem_params, int num_reg_params, reg_param_t *reg_param, u32 entry_point, u32 exit_point, int timeout_ms, void *arch_info)
{
	if (!target->type->examined)
	{
		LOG_ERROR("Target not examined yet");
		return ERROR_FAIL;
	}
	return target->type->run_algorithm_imp(target, num_mem_params, mem_params, num_reg_params, reg_param, entry_point, exit_point, timeout_ms, arch_info);
}
531

532
533
534
535
536
537
int target_init(struct command_context_s *cmd_ctx)
{
	target_t *target = targets;
	
	while (target)
	{
538
539
540
541
542
543
		target->type->examined = 0;
		if (target->type->examine == NULL)
		{
			target->type->examine = default_examine;
		}
		
544
545
		if (target->type->init_target(cmd_ctx, target) != ERROR_OK)
		{
546
			LOG_ERROR("target '%s' init failed", target->type->name);
547
548
549
550
551
552
553
554
			exit(-1);
		}
		
		/* Set up default functions if none are provided by target */
		if (target->type->virt2phys == NULL)
		{
			target->type->virt2phys = default_virt2phys;
		}
555
556
557
558
559
560
561
562
563
564
565
566
567
568
		target->type->virt2phys = default_virt2phys;
		/* a non-invasive way(in terms of patches) to add some code that
		 * runs before the type->write/read_memory implementation
		 */
		target->type->write_memory_imp = target->type->write_memory;
		target->type->write_memory = target_write_memory_imp;
		target->type->read_memory_imp = target->type->read_memory;
		target->type->read_memory = target_read_memory_imp;
		target->type->soft_reset_halt_imp = target->type->soft_reset_halt;
		target->type->soft_reset_halt = target_soft_reset_halt_imp;
		target->type->run_algorithm_imp = target->type->run_algorithm;
		target->type->run_algorithm = target_run_algorithm_imp;

		
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
		if (target->type->mmu == NULL)
		{
			target->type->mmu = default_mmu;
		}
		target = target->next;
	}
	
	if (targets)
	{
		target_register_user_commands(cmd_ctx);
		target_register_timer_callback(handle_target, 100, 1, NULL);
	}
		
	return ERROR_OK;
}

int target_register_event_callback(int (*callback)(struct target_s *target, enum target_event event, void *priv), void *priv)
{
	target_event_callback_t **callbacks_p = &target_event_callbacks;
	
	if (callback == NULL)
	{
		return ERROR_INVALID_ARGUMENTS;
	}
	
	if (*callbacks_p)
	{
		while ((*callbacks_p)->next)
			callbacks_p = &((*callbacks_p)->next);
		callbacks_p = &((*callbacks_p)->next);
	}
	
	(*callbacks_p) = malloc(sizeof(target_event_callback_t));
	(*callbacks_p)->callback = callback;
	(*callbacks_p)->priv = priv;
	(*callbacks_p)->next = NULL;
	
	return ERROR_OK;
}

int target_register_timer_callback(int (*callback)(void *priv), int time_ms, int periodic, void *priv)
{
	target_timer_callback_t **callbacks_p = &target_timer_callbacks;
	struct timeval now;
	
	if (callback == NULL)
	{
		return ERROR_INVALID_ARGUMENTS;
	}
	
	if (*callbacks_p)
	{
		while ((*callbacks_p)->next)
			callbacks_p = &((*callbacks_p)->next);
		callbacks_p = &((*callbacks_p)->next);
	}
	
	(*callbacks_p) = malloc(sizeof(target_timer_callback_t));
	(*callbacks_p)->callback = callback;
	(*callbacks_p)->periodic = periodic;
	(*callbacks_p)->time_ms = time_ms;
	
	gettimeofday(&now, NULL);
	(*callbacks_p)->when.tv_usec = now.tv_usec + (time_ms % 1000) * 1000;
	time_ms -= (time_ms % 1000);
	(*callbacks_p)->when.tv_sec = now.tv_sec + (time_ms / 1000);
	if ((*callbacks_p)->when.tv_usec > 1000000)
	{
		(*callbacks_p)->when.tv_usec = (*callbacks_p)->when.tv_usec - 1000000;
		(*callbacks_p)->when.tv_sec += 1;
	}
	
	(*callbacks_p)->priv = priv;
	(*callbacks_p)->next = NULL;
	
	return ERROR_OK;
}

int target_unregister_event_callback(int (*callback)(struct target_s *target, enum target_event event, void *priv), void *priv)
{
	target_event_callback_t **p = &target_event_callbacks;
	target_event_callback_t *c = target_event_callbacks;
	
	if (callback == NULL)
	{
		return ERROR_INVALID_ARGUMENTS;
	}
		
	while (c)
	{
		target_event_callback_t *next = c->next;
		if ((c->callback == callback) && (c->priv == priv))
		{
			*p = next;
			free(c);
			return ERROR_OK;
		}
		else
			p = &(c->next);
		c = next;
	}
	
	return ERROR_OK;
}

int target_unregister_timer_callback(int (*callback)(void *priv), void *priv)
{
	target_timer_callback_t **p = &target_timer_callbacks;
	target_timer_callback_t *c = target_timer_callbacks;
	
	if (callback == NULL)
	{
		return ERROR_INVALID_ARGUMENTS;
	}
		
	while (c)
	{
		target_timer_callback_t *next = c->next;
		if ((c->callback == callback) && (c->priv == priv))
		{
			*p = next;
			free(c);
			return ERROR_OK;
		}
		else
			p = &(c->next);
		c = next;
	}
	
	return ERROR_OK;
}

int target_call_event_callbacks(target_t *target, enum target_event event)
{
	target_event_callback_t *callback = target_event_callbacks;
	target_event_callback_t *next_callback;
	
706
	LOG_DEBUG("target event %i", event);
707
708
709
710
711
712
713
714
715
716
717
	
	while (callback)
	{
		next_callback = callback->next;
		callback->callback(target, event, callback->priv);
		callback = next_callback;
	}
	
	return ERROR_OK;
}

718
static int target_call_timer_callbacks_check_time(int checktime)
719
720
721
722
723
724
725
726
727
728
729
{
	target_timer_callback_t *callback = target_timer_callbacks;
	target_timer_callback_t *next_callback;
	struct timeval now;

	gettimeofday(&now, NULL);
	
	while (callback)
	{
		next_callback = callback->next;
		
730
731
732
		if ((!checktime&&callback->periodic)||
				(((now.tv_sec >= callback->when.tv_sec) && (now.tv_usec >= callback->when.tv_usec))
						|| (now.tv_sec > callback->when.tv_sec)))
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
		{
			callback->callback(callback->priv);
			if (callback->periodic)
			{
				int time_ms = callback->time_ms;
				callback->when.tv_usec = now.tv_usec + (time_ms % 1000) * 1000;
				time_ms -= (time_ms % 1000);
				callback->when.tv_sec = now.tv_sec + time_ms / 1000;
				if (callback->when.tv_usec > 1000000)
				{
					callback->when.tv_usec = callback->when.tv_usec - 1000000;
					callback->when.tv_sec += 1;
				}
			}
			else
				target_unregister_timer_callback(callback->callback, callback->priv);
		}
			
		callback = next_callback;
	}
	
	return ERROR_OK;
}

757
758
759
760
761
762
int target_call_timer_callbacks()
{
	return target_call_timer_callbacks_check_time(1);
}

/* invoke periodic callbacks immediately */
763
764
int target_call_timer_callbacks_now()
{
765
	return target_call_timer_callbacks(0);
766
767
768
}


769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
int target_alloc_working_area(struct target_s *target, u32 size, working_area_t **area)
{
	working_area_t *c = target->working_areas;
	working_area_t *new_wa = NULL;
	
	/* Reevaluate working area address based on MMU state*/
	if (target->working_areas == NULL)
	{
		int retval;
		int enabled;
		retval = target->type->mmu(target, &enabled);
		if (retval != ERROR_OK)
		{
			return retval;
		}
		if (enabled)
		{
			target->working_area = target->working_area_virt;
		}
		else
		{
			target->working_area = target->working_area_phys;
		}
	}
	
	/* only allocate multiples of 4 byte */
	if (size % 4)
	{
797
		LOG_ERROR("BUG: code tried to allocate unaligned number of bytes, padding");
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
		size = CEIL(size, 4);
	}
	
	/* see if there's already a matching working area */
	while (c)
	{
		if ((c->free) && (c->size == size))
		{
			new_wa = c;
			break;
		}
		c = c->next;
	}
	
	/* if not, allocate a new one */
	if (!new_wa)
	{
		working_area_t **p = &target->working_areas;
		u32 first_free = target->working_area;
		u32 free_size = target->working_area_size;
		
819
		LOG_DEBUG("allocating new working area");
820
821
822
823
824
825
826
827
828
829
830
831
		
		c = target->working_areas;
		while (c)
		{
			first_free += c->size;
			free_size -= c->size;
			p = &c->next;
			c = c->next;
		}
		
		if (free_size < size)
		{
832
			LOG_WARNING("not enough working area available(requested %d, free %d)", size, free_size);
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
			return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
		}
		
		new_wa = malloc(sizeof(working_area_t));
		new_wa->next = NULL;
		new_wa->size = size;
		new_wa->address = first_free;
		
		if (target->backup_working_area)
		{
			new_wa->backup = malloc(new_wa->size);
			target->type->read_memory(target, new_wa->address, 4, new_wa->size / 4, new_wa->backup);
		}
		else
		{
			new_wa->backup = NULL;
		}
		
		/* put new entry in list */
		*p = new_wa;
	}
	
	/* mark as used, and return the new (reused) area */
	new_wa->free = 0;
	*area = new_wa;
	
	/* user pointer */
	new_wa->user = area;
	
	return ERROR_OK;
}

oharboe's avatar
   
oharboe committed
865
int target_free_working_area_restore(struct target_s *target, working_area_t *area, int restore)
866
867
868
869
{
	if (area->free)
		return ERROR_OK;
	
oharboe's avatar
   
oharboe committed
870
	if (restore&&target->backup_working_area)
871
872
873
874
875
876
877
878
879
880
881
		target->type->write_memory(target, area->address, 4, area->size / 4, area->backup);
	
	area->free = 1;
	
	/* mark user pointer invalid */
	*area->user = NULL;
	area->user = NULL;
	
	return ERROR_OK;
}

oharboe's avatar
   
oharboe committed
882
883
884
885
886
887
int target_free_working_area(struct target_s *target, working_area_t *area)
{
	return target_free_working_area_restore(target, area, 1);
}

int target_free_all_working_areas_restore(struct target_s *target, int restore)
888
889
890
891
892
893
{
	working_area_t *c = target->working_areas;

	while (c)
	{
		working_area_t *next = c->next;
oharboe's avatar
   
oharboe committed
894
		target_free_working_area_restore(target, c, restore);
895
896
897
898
899
900
901
902
903
904
905
906
907
908
		
		if (c->backup)
			free(c->backup);
		
		free(c);
		
		c = next;
	}
	
	target->working_areas = NULL;
	
	return ERROR_OK;
}

oharboe's avatar
   
oharboe committed
909
910
911
912
913
int target_free_all_working_areas(struct target_s *target)
{
	return target_free_all_working_areas_restore(target, 1); 
}

914
915
int target_register_commands(struct command_context_s *cmd_ctx)
{
916
	register_command(cmd_ctx, NULL, "target", handle_target_command, COMMAND_CONFIG, "target <cpu> [reset_init default - DEPRECATED] <chainpos> <endianness> <variant> [cpu type specifc args]");
917
918
	register_command(cmd_ctx, NULL, "targets", handle_targets_command, COMMAND_EXEC, NULL);
	register_command(cmd_ctx, NULL, "target_script", handle_target_script_command, COMMAND_CONFIG, NULL);
919
	register_command(cmd_ctx, NULL, "run_and_halt_time", handle_run_and_halt_time_command, COMMAND_CONFIG, "<target> <run time ms>");
920
921
	register_command(cmd_ctx, NULL, "working_area", handle_working_area_command, COMMAND_ANY, "working_area <target#> <address> <size> <'backup'|'nobackup'> [virtual address]");
	register_command(cmd_ctx, NULL, "virt2phys", handle_virt2phys_command, COMMAND_ANY, "virt2phys <virtual address>");
922
	register_command(cmd_ctx, NULL, "profile", handle_profile_command, COMMAND_EXEC, "PRELIMINARY! - profile <seconds> <gmon.out>");
923
924
925
926
927
928
929
930
931

	return ERROR_OK;
}

int target_arch_state(struct target_s *target)
{
	int retval;
	if (target==NULL)
	{
932
		LOG_USER("No target has been configured");
933
934
935
		return ERROR_OK;
	}
	
936
	LOG_USER("target state: %s", target_state_strings[target->state]);
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
	
	if (target->state!=TARGET_HALTED)
		return ERROR_OK;
	
	retval=target->type->arch_state(target);
	return retval;
}

/* Single aligned words are guaranteed to use 16 or 32 bit access 
 * mode respectively, otherwise data is handled as quickly as 
 * possible
 */
int target_write_buffer(struct target_s *target, u32 address, u32 size, u8 *buffer)
{
	int retval;
952
953
954
955
956
	if (!target->type->examined)
	{
		LOG_ERROR("Target not examined yet");
		return ERROR_FAIL;
	}
957
	
958
	LOG_DEBUG("writing buffer of %i byte at 0x%8.8x", size, address);
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
	
	if (((address % 2) == 0) && (size == 2))
	{
		return target->type->write_memory(target, address, 2, 1, buffer);
	}
	
	/* handle unaligned head bytes */
	if (address % 4)
	{
		int unaligned = 4 - (address % 4);
		
		if (unaligned > size)
			unaligned = size;

		if ((retval = target->type->write_memory(target, address, 1, unaligned, buffer)) != ERROR_OK)
			return retval;
		
		buffer += unaligned;
		address += unaligned;
		size -= unaligned;
	}
		
	/* handle aligned words */
	if (size >= 4)
	{
		int aligned = size - (size % 4);
	
		/* use bulk writes above a certain limit. This may have to be changed */
		if (aligned > 128)
		{
			if ((retval = target->type->bulk_write_memory(target, address, aligned / 4, buffer)) != ERROR_OK)
				return retval;
		}
		else
		{
			if ((retval = target->type->write_memory(target, address, 4, aligned / 4, buffer)) != ERROR_OK)
				return retval;
		}
		
		buffer += aligned;
		address += aligned;
		size -= aligned;
For faster browsing, not all history is shown. View entire blame