target.c 105 KB
Newer Older
1
2
3
4
/***************************************************************************
 *   Copyright (C) 2005 by Dominic Rath                                    *
 *   Dominic.Rath@gmx.de                                                   *
 *                                                                         *
5
 *   Copyright (C) 2007,2008 yvind Harboe                                 *
6
7
 *   oyvind.harboe@zylin.com                                               *
 *                                                                         *
8
9
10
 *   Copyright (C) 2008, Duane Ellis                                       *
 *   openocd@duaneeellis.com                                               *
 *                                                                         *
11
12
13
 *   Copyright (C) 2008 by Spencer Oliver                                  *
 *   spen@spen-soft.co.uk                                                  *
 *                                                                         *
14
15
16
 *   Copyright (C) 2008 by Rick Altherr                                    *
 *   kc8apf@kc8apf.net>                                                    *
 *                                                                         *
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
 *   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/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>

61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
static int handle_targets_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);

static int handle_reg_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
static int handle_poll_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
static int handle_halt_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
static int handle_wait_halt_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
static int handle_reset_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
static int handle_soft_reset_halt_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
static int handle_resume_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
static int handle_step_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
static int handle_md_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
static int handle_mw_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
static int handle_load_image_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
static int handle_dump_image_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
static int handle_verify_image_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
static int handle_test_image_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
static int handle_bp_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
static int handle_rbp_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
static int handle_wp_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
static int handle_rwp_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
static int handle_virt2phys_command(command_context_t *cmd_ctx, char *cmd, char **args, int argc);
static int handle_profile_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
static int handle_fast_load_image_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
static int handle_fast_load_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
85

86
87
static int jim_array2mem(Jim_Interp *interp, int argc, Jim_Obj *const *argv);
static int jim_mem2array(Jim_Interp *interp, int argc, Jim_Obj *const *argv);
88
static int jim_target( Jim_Interp *interp, int argc, Jim_Obj *const *argv);
89

90
91
92
static int target_array2mem(Jim_Interp *interp, target_t *target, int argc, Jim_Obj *const *argv);
static int target_mem2array(Jim_Interp *interp, target_t *target, int argc, Jim_Obj *const *argv);

93
/* targets */
94
95
96
97
98
99
100
101
102
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;
103
extern target_type_t cortexa8_target;
oharboe's avatar
oharboe committed
104
extern target_type_t arm11_target;
ntfreak's avatar
ntfreak committed
105
extern target_type_t mips_m4k_target;
106
extern target_type_t avr_target;
107
108
109
110
111
112
113
114
115
116
117
118

target_type_t *target_types[] =
{
	&arm7tdmi_target,
	&arm9tdmi_target,
	&arm920t_target,
	&arm720t_target,
	&arm966e_target,
	&arm926ejs_target,
	&feroceon_target,
	&xscale_target,
	&cortexm3_target,
119
	&cortexa8_target,
oharboe's avatar
oharboe committed
120
	&arm11_target,
ntfreak's avatar
ntfreak committed
121
	&mips_m4k_target,
122
	&avr_target,
123
124
125
	NULL,
};

126
target_t *all_targets = NULL;
127
128
129
target_event_callback_t *target_event_callbacks = NULL;
target_timer_callback_t *target_timer_callbacks = NULL;

130
131
132
133
134
135
136
137
const Jim_Nvp nvp_assert[] = {
	{ .name = "assert", NVP_ASSERT },
	{ .name = "deassert", NVP_DEASSERT },
	{ .name = "T", NVP_ASSERT },
	{ .name = "F", NVP_DEASSERT },
	{ .name = "t", NVP_ASSERT },
	{ .name = "f", NVP_DEASSERT },
	{ .name = NULL, .value = -1 }
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
const Jim_Nvp nvp_error_target[] = {
	{ .value = ERROR_TARGET_INVALID, .name = "err-invalid" },
	{ .value = ERROR_TARGET_INIT_FAILED, .name = "err-init-failed" },
	{ .value = ERROR_TARGET_TIMEOUT, .name = "err-timeout" },
	{ .value = ERROR_TARGET_NOT_HALTED, .name = "err-not-halted" },
	{ .value = ERROR_TARGET_FAILURE, .name = "err-failure" },
	{ .value = ERROR_TARGET_UNALIGNED_ACCESS   , .name = "err-unaligned-access" },
	{ .value = ERROR_TARGET_DATA_ABORT , .name = "err-data-abort" },
	{ .value = ERROR_TARGET_RESOURCE_NOT_AVAILABLE , .name = "err-resource-not-available" },
	{ .value = ERROR_TARGET_TRANSLATION_FAULT  , .name = "err-translation-fault" },
	{ .value = ERROR_TARGET_NOT_RUNNING, .name = "err-not-running" },
	{ .value = ERROR_TARGET_NOT_EXAMINED, .name = "err-not-examined" },
	{ .value = -1, .name = NULL }
};

const char *target_strerror_safe( int err )
{
	const Jim_Nvp *n;

	n = Jim_Nvp_value2name_simple( nvp_error_target, err );
	if( n->name == NULL ){
		return "unknown";
	} else {
		return n->name;
	}
}

167
const Jim_Nvp nvp_target_event[] = {
168
169
	{ .value = TARGET_EVENT_OLD_gdb_program_config , .name = "old-gdb_program_config" },
	{ .value = TARGET_EVENT_OLD_pre_resume         , .name = "old-pre_resume" },
170

171
	{ .value = TARGET_EVENT_EARLY_HALTED, .name = "early-halted" },
172
173
174
175
176
	{ .value = TARGET_EVENT_HALTED, .name = "halted" },
	{ .value = TARGET_EVENT_RESUMED, .name = "resumed" },
	{ .value = TARGET_EVENT_RESUME_START, .name = "resume-start" },
	{ .value = TARGET_EVENT_RESUME_END, .name = "resume-end" },

177
178
179
	{ .name = "gdb-start", .value = TARGET_EVENT_GDB_START },
	{ .name = "gdb-end", .value = TARGET_EVENT_GDB_END },

180
	/* historical name */
181

182
	{ .value = TARGET_EVENT_RESET_START, .name = "reset-start" },
183
184
185
186
187
188
189
190
191

	{ .value = TARGET_EVENT_RESET_ASSERT_PRE,    .name = "reset-assert-pre" },
	{ .value = TARGET_EVENT_RESET_ASSERT_POST,   .name = "reset-assert-post" },
	{ .value = TARGET_EVENT_RESET_DEASSERT_PRE,  .name = "reset-deassert-pre" },
	{ .value = TARGET_EVENT_RESET_DEASSERT_POST, .name = "reset-deassert-post" },
	{ .value = TARGET_EVENT_RESET_HALT_PRE,      .name = "reset-halt-pre" },
	{ .value = TARGET_EVENT_RESET_HALT_POST,     .name = "reset-halt-post" },
	{ .value = TARGET_EVENT_RESET_WAIT_PRE,      .name = "reset-wait-pre" },
	{ .value = TARGET_EVENT_RESET_WAIT_POST,     .name = "reset-wait-post" },
192
193
194
	{ .value = TARGET_EVENT_RESET_INIT , .name = "reset-init" },
	{ .value = TARGET_EVENT_RESET_END, .name = "reset-end" },

195
	{ .value = TARGET_EVENT_EXAMINE_START, .name = "examine-start" },
196
	{ .value = TARGET_EVENT_EXAMINE_END, .name = "examine-end" },
197

198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
	{ .value = TARGET_EVENT_DEBUG_HALTED, .name = "debug-halted" },
	{ .value = TARGET_EVENT_DEBUG_RESUMED, .name = "debug-resumed" },

	{ .value = TARGET_EVENT_GDB_ATTACH, .name = "gdb-attach" },
	{ .value = TARGET_EVENT_GDB_DETACH, .name = "gdb-detach" },

	{ .value = TARGET_EVENT_GDB_FLASH_WRITE_START, .name = "gdb-flash-write-start" },
	{ .value = TARGET_EVENT_GDB_FLASH_WRITE_END  , .name = "gdb-flash-write-end"   },

	{ .value = TARGET_EVENT_GDB_FLASH_ERASE_START, .name = "gdb-flash-erase-start" },
	{ .value = TARGET_EVENT_GDB_FLASH_ERASE_END  , .name = "gdb-flash-erase-end" },

	{ .value = TARGET_EVENT_RESUME_START, .name = "resume-start" },
	{ .value = TARGET_EVENT_RESUMED     , .name = "resume-ok" },
	{ .value = TARGET_EVENT_RESUME_END  , .name = "resume-end" },

	{ .name = NULL, .value = -1 }
215
216
};

217
218
219
220
221
222
223
const Jim_Nvp nvp_target_state[] = {
	{ .name = "unknown", .value = TARGET_UNKNOWN },
	{ .name = "running", .value = TARGET_RUNNING },
	{ .name = "halted",  .value = TARGET_HALTED },
	{ .name = "reset",   .value = TARGET_RESET },
	{ .name = "debug-running", .value = TARGET_DEBUG_RUNNING },
	{ .name = NULL, .value = -1 },
224
225
};

226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
const Jim_Nvp nvp_target_debug_reason [] = {
	{ .name = "debug-request"            , .value = DBG_REASON_DBGRQ },
	{ .name = "breakpoint"               , .value = DBG_REASON_BREAKPOINT },
	{ .name = "watchpoint"               , .value = DBG_REASON_WATCHPOINT },
	{ .name = "watchpoint-and-breakpoint", .value = DBG_REASON_WPTANDBKPT },
	{ .name = "single-step"              , .value = DBG_REASON_SINGLESTEP },
	{ .name = "target-not-halted"        , .value = DBG_REASON_NOTHALTED  },
	{ .name = "undefined"                , .value = DBG_REASON_UNDEFINED },
	{ .name = NULL, .value = -1 },
};

const Jim_Nvp nvp_target_endian[] = {
	{ .name = "big",    .value = TARGET_BIG_ENDIAN },
	{ .name = "little", .value = TARGET_LITTLE_ENDIAN },
	{ .name = "be",     .value = TARGET_BIG_ENDIAN },
241
	{ .name = "le",     .value = TARGET_LITTLE_ENDIAN },
242
243
244
	{ .name = NULL,     .value = -1 },
};

245
246
247
248
249
250
251
252
const Jim_Nvp nvp_reset_modes[] = {
	{ .name = "unknown", .value = RESET_UNKNOWN },
	{ .name = "run"    , .value = RESET_RUN },
	{ .name = "halt"   , .value = RESET_HALT },
	{ .name = "init"   , .value = RESET_INIT },
	{ .name = NULL     , .value = -1 },
};

253
static int max_target_number(void)
254
255
256
257
258
259
260
261
262
263
264
265
266
267
{
	target_t *t;
	int x;

	x = -1;
	t = all_targets;
	while( t ){
		if( x < t->target_number ){
			x = (t->target_number)+1;
		}
		t = t->next;
	}
	return x;
}
268
269

/* determine the number of the new target */
270
static int new_target_number(void)
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
{
	target_t *t;
	int x;

	/* number is 0 based */
	x = -1;
	t = all_targets;
	while(t){
		if( x < t->target_number ){
			x = t->target_number;
		}
		t = t->next;
	}
	return x+1;
}

287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
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);
}

307
308
309
310
311
312
/* read a u8 from a buffer in target memory endianness */
u8 target_buffer_get_u8(target_t *target, u8 *buffer)
{
	return *buffer & 0x0ff;
}

313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
/* 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);
}

331
332
333
334
335
336
/* write a u8 to a buffer in target memory endianness */
void target_buffer_set_u8(target_t *target, u8 *buffer, u8 value)
{
	*buffer = value;
}

337
338
339
/* returns a pointer to the n-th configured target */
target_t* get_target_by_num(int num)
{
340
	target_t *target = all_targets;
341

342
343
	while (target){
		if( target->target_number == num ){
344
			return target;
345
		}
346
347
348
349
350
351
352
353
		target = target->next;
	}

	return NULL;
}

int get_num_by_target(target_t *query_target)
{
354
	return query_target->target_number;
355
356
357
358
359
}

target_t* get_current_target(command_context_t *cmd_ctx)
{
	target_t *target = get_target_by_num(cmd_ctx->current_target);
oharboe's avatar
oharboe committed
360

361
362
	if (target == NULL)
	{
363
		LOG_ERROR("BUG: current_target out of bounds");
364
365
366
		exit(-1);
	}

oharboe's avatar
oharboe committed
367
	return target;
368
369
}

370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
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)
{
394
	int retval;
oharboe's avatar
oharboe committed
395

396
397
398
399
400
401
	/* We can't poll until after examine */
	if (!target->type->examined)
	{
		LOG_ERROR("Target not examined yet");
		return ERROR_FAIL;
	}
oharboe's avatar
oharboe committed
402

oharboe's avatar
oharboe committed
403
404
405
406
	/* note that resume *must* be asynchronous. The CPU can halt before we poll. The CPU can
	 * even halt at the current PC as a result of a software breakpoint being inserted by (a bug?)
	 * the application.
	 */
407
408
	if ((retval = target->type->resume(target, current, address, handle_breakpoints, debug_execution)) != ERROR_OK)
		return retval;
oharboe's avatar
oharboe committed
409

410
	return retval;
411
412
}

oharboe's avatar
oharboe committed
413
int target_process_reset(struct command_context_s *cmd_ctx, enum target_reset_mode reset_mode)
414
415
{
	char buf[100];
416
	int retval;
417
418
419
420
421
422
423
424
	Jim_Nvp *n;
	n = Jim_Nvp_value2name_simple( nvp_reset_modes, reset_mode );
	if( n->name == NULL ){
		LOG_ERROR("invalid reset mode");
		return ERROR_FAIL;
	}

	sprintf( buf, "ocd_process_reset %s", n->name );
425
426
	retval = Jim_Eval( interp, buf );

427
428
	if(retval != JIM_OK) {
		Jim_PrintErrorMessage(interp);
429
430
		return ERROR_FAIL;
	}
431
432

	/* We want any events to be processed before the prompt */
433
	retval = target_call_timer_callbacks_now();
434

435
	return retval;
436
437
}

438
439
440
441
442
443
444
445
446
447
448
449
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;
}

450
static int default_examine(struct target_s *target)
451
{
452
	target->type->examined = 1;
453
454
455
	return ERROR_OK;
}

456
457
/* Targets that correctly implement init+examine, i.e.
 * no communication with target during init:
oharboe's avatar
oharboe committed
458
459
 *
 * XScale
460
 */
ntfreak's avatar
ntfreak committed
461
int target_examine(void)
462
463
{
	int retval = ERROR_OK;
464
	target_t *target = all_targets;
465
466
	while (target)
	{
467
		if ((retval = target->type->examine(target))!=ERROR_OK)
468
469
470
471
472
			return retval;
		target = target->next;
	}
	return retval;
}
473

474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
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);
}
513

514
515
int target_init(struct command_context_s *cmd_ctx)
{
516
	target_t *target = all_targets;
517
	int retval;
oharboe's avatar
oharboe committed
518

519
520
	while (target)
	{
521
522
523
524
525
		target->type->examined = 0;
		if (target->type->examine == NULL)
		{
			target->type->examine = default_examine;
		}
oharboe's avatar
oharboe committed
526

527
		if ((retval = target->type->init_target(cmd_ctx, target)) != ERROR_OK)
528
		{
529
			LOG_ERROR("target '%s' init failed", target->type->name);
530
			return retval;
531
		}
oharboe's avatar
oharboe committed
532

533
534
535
536
537
		/* Set up default functions if none are provided by target */
		if (target->type->virt2phys == NULL)
		{
			target->type->virt2phys = default_virt2phys;
		}
538
539
540
541
542
543
544
545
546
547
548
549
550
		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;

551
552
553
554
555
556
		if (target->type->mmu == NULL)
		{
			target->type->mmu = default_mmu;
		}
		target = target->next;
	}
oharboe's avatar
oharboe committed
557

558
	if (all_targets)
559
	{
560
561
562
563
		if((retval = target_register_user_commands(cmd_ctx)) != ERROR_OK)
			return retval;
		if((retval = target_register_timer_callback(handle_target, 100, 1, NULL)) != ERROR_OK)
			return retval;
564
	}
oharboe's avatar
oharboe committed
565

566
567
568
569
570
571
	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;
oharboe's avatar
oharboe committed
572

573
574
575
576
	if (callback == NULL)
	{
		return ERROR_INVALID_ARGUMENTS;
	}
oharboe's avatar
oharboe committed
577

578
579
580
581
582
583
	if (*callbacks_p)
	{
		while ((*callbacks_p)->next)
			callbacks_p = &((*callbacks_p)->next);
		callbacks_p = &((*callbacks_p)->next);
	}
oharboe's avatar
oharboe committed
584

585
586
587
588
	(*callbacks_p) = malloc(sizeof(target_event_callback_t));
	(*callbacks_p)->callback = callback;
	(*callbacks_p)->priv = priv;
	(*callbacks_p)->next = NULL;
oharboe's avatar
oharboe committed
589

590
591
592
593
594
595
596
	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;
oharboe's avatar
oharboe committed
597

598
599
600
601
	if (callback == NULL)
	{
		return ERROR_INVALID_ARGUMENTS;
	}
oharboe's avatar
oharboe committed
602

603
604
605
606
607
608
	if (*callbacks_p)
	{
		while ((*callbacks_p)->next)
			callbacks_p = &((*callbacks_p)->next);
		callbacks_p = &((*callbacks_p)->next);
	}
oharboe's avatar
oharboe committed
609

610
611
612
613
	(*callbacks_p) = malloc(sizeof(target_timer_callback_t));
	(*callbacks_p)->callback = callback;
	(*callbacks_p)->periodic = periodic;
	(*callbacks_p)->time_ms = time_ms;
oharboe's avatar
oharboe committed
614

615
616
617
618
619
620
621
622
623
	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;
	}
oharboe's avatar
oharboe committed
624

625
626
	(*callbacks_p)->priv = priv;
	(*callbacks_p)->next = NULL;
oharboe's avatar
oharboe committed
627

628
629
630
631
632
633
634
	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;
oharboe's avatar
oharboe committed
635

636
637
638
639
	if (callback == NULL)
	{
		return ERROR_INVALID_ARGUMENTS;
	}
oharboe's avatar
oharboe committed
640

641
642
643
644
645
646
647
648
649
650
651
652
653
	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;
	}
oharboe's avatar
oharboe committed
654

655
656
657
658
659
660
661
	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;
oharboe's avatar
oharboe committed
662

663
664
665
666
	if (callback == NULL)
	{
		return ERROR_INVALID_ARGUMENTS;
	}
oharboe's avatar
oharboe committed
667

668
669
670
671
672
673
674
675
676
677
678
679
680
	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;
	}
oharboe's avatar
oharboe committed
681

682
683
684
685
686
687
688
	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;
oharboe's avatar
oharboe committed
689

690
691
692
693
694
695
	if (event == TARGET_EVENT_HALTED)
	{
		/* execute early halted first */
		target_call_event_callbacks(target, TARGET_EVENT_EARLY_HALTED);
	}

696
697
	LOG_DEBUG("target event %i (%s)",
			  event,
698
			  Jim_Nvp_value2name_simple( nvp_target_event, event )->name );
oharboe's avatar
oharboe committed
699

700
	target_handle_event( target, event );
701

702
703
704
705
706
707
	while (callback)
	{
		next_callback = callback->next;
		callback->callback(target, event, callback->priv);
		callback = next_callback;
	}
oharboe's avatar
oharboe committed
708

709
710
711
	return ERROR_OK;
}

712
static int target_call_timer_callbacks_check_time(int checktime)
713
714
715
716
717
{
	target_timer_callback_t *callback = target_timer_callbacks;
	target_timer_callback_t *next_callback;
	struct timeval now;

oharboe's avatar
   
oharboe committed
718
719
	keep_alive();

720
	gettimeofday(&now, NULL);
oharboe's avatar
oharboe committed
721

722
723
724
	while (callback)
	{
		next_callback = callback->next;
oharboe's avatar
oharboe committed
725

726
727
728
		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)))
729
		{
730
			if(callback->callback != NULL)
731
			{
732
733
				callback->callback(callback->priv);
				if (callback->periodic)
734
				{
735
736
737
738
739
740
741
742
743
					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;
					}
744
				}
745
				else
746
747
748
749
750
				{
					int retval;
					if((retval = target_unregister_timer_callback(callback->callback, callback->priv)) != ERROR_OK)
						return retval;
				}
751
752
			}
		}
oharboe's avatar
oharboe committed
753

754
755
		callback = next_callback;
	}
oharboe's avatar
oharboe committed
756

757
758
759
	return ERROR_OK;
}

oharboe's avatar
oharboe committed
760
int target_call_timer_callbacks(void)
761
762
763
764
765
{
	return target_call_timer_callbacks_check_time(1);
}

/* invoke periodic callbacks immediately */
oharboe's avatar
oharboe committed
766
int target_call_timer_callbacks_now(void)
767
{
oharboe's avatar
   
oharboe committed
768
	return target_call_timer_callbacks_check_time(0);
769
770
}

771
772
773
774
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;
oharboe's avatar
oharboe committed
775

776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
	/* 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;
		}
	}
oharboe's avatar
oharboe committed
795

796
797
798
	/* only allocate multiples of 4 byte */
	if (size % 4)
	{
799
		LOG_ERROR("BUG: code tried to allocate unaligned number of bytes, padding");
800
801
		size = CEIL(size, 4);
	}
oharboe's avatar
oharboe committed
802

803
804
805
806
807
808
809
810
811
812
	/* see if there's already a matching working area */
	while (c)
	{
		if ((c->free) && (c->size == size))
		{
			new_wa = c;
			break;
		}
		c = c->next;
	}
oharboe's avatar
oharboe committed
813

814
815
816
817
818
819
	/* 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;
oharboe's avatar
oharboe committed
820

821
		LOG_DEBUG("allocating new working area");
oharboe's avatar
oharboe committed
822

823
824
825
826
827
828
829
830
		c = target->working_areas;
		while (c)
		{
			first_free += c->size;
			free_size -= c->size;
			p = &c->next;
			c = c->next;
		}
oharboe's avatar
oharboe committed
831

832
833
		if (free_size < size)
		{
834
			LOG_WARNING("not enough working area available(requested %d, free %d)", size, free_size);
835
836
			return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
		}
oharboe's avatar
oharboe committed
837

838
839
840
841
		new_wa = malloc(sizeof(working_area_t));
		new_wa->next = NULL;
		new_wa->size = size;
		new_wa->address = first_free;
oharboe's avatar
oharboe committed
842

843
844
		if (target->backup_working_area)
		{
845
			int retval;
846
			new_wa->backup = malloc(new_wa->size);
847
848
849
850
851
852
			if((retval = target->type->read_memory(target, new_wa->address, 4, new_wa->size / 4, new_wa->backup)) != ERROR_OK)
			{
				free(new_wa->backup);
				free(new_wa);
				return retval;
			}
853
854
855
856
857
		}
		else
		{
			new_wa->backup = NULL;
		}
oharboe's avatar
oharboe committed
858

859
860
861
		/* put new entry in list */
		*p = new_wa;
	}
oharboe's avatar
oharboe committed
862

863
864
865
	/* mark as used, and return the new (reused) area */
	new_wa->free = 0;
	*area = new_wa;
oharboe's avatar
oharboe committed
866

867
868
	/* user pointer */
	new_wa->user = area;
oharboe's avatar
oharboe committed
869

870
871
872
	return ERROR_OK;
}

oharboe's avatar
   
oharboe committed
873
int target_free_working_area_restore(struct target_s *target, working_area_t *area, int restore)
874
875
876
{
	if (area->free)
		return ERROR_OK;
oharboe's avatar
oharboe committed
877

oharboe's avatar
   
oharboe committed
878
	if (restore&&target->backup_working_area)
879
880
881
882
883
	{
		int retval;
		if((retval = target->type->write_memory(target, area->address, 4, area->size / 4, area->backup)) != ERROR_OK)
			return retval;
	}
oharboe's avatar
oharboe committed
884

885
	area->free = 1;
oharboe's avatar
oharboe committed
886

887
888
889
	/* mark user pointer invalid */
	*area->user = NULL;
	area->user = NULL;
oharboe's avatar
oharboe committed
890

891
892
893
	return ERROR_OK;
}

oharboe's avatar
   
oharboe committed
894
895
896
897
898
int target_free_working_area(struct target_s *target, working_area_t *area)
{
	return target_free_working_area_restore(target, area, 1);
}

899
900
901
902
/* free resources and restore memory, if restoring memory fails,
 * free up resources anyway
 */
void target_free_all_working_areas_restore(struct target_s *target, int restore)
903
904
905
906
907
908
{
	working_area_t *c = target->working_areas;

	while (c)
	{
		working_area_t *next = c->next;
oharboe's avatar
   
oharboe committed
909
		target_free_working_area_restore(target, c, restore);
oharboe's avatar
oharboe committed
910

911
912
		if (c->backup)
			free(c->backup);
oharboe's avatar
oharboe committed
913

914
		free(c);
oharboe's avatar
oharboe committed
915

916
917
		c = next;
	}
oharboe's avatar
oharboe committed
918

919
920
921
	target->working_areas = NULL;
}

922
void target_free_all_working_areas(struct target_s *target)
oharboe's avatar
   
oharboe committed
923
{
924
	target_free_all_working_areas_restore(target, 1);
oharboe's avatar
   
oharboe committed
925
926
}

927
928
int target_register_commands(struct command_context_s *cmd_ctx)
{
929

oharboe's avatar
oharboe committed
930
	register_command(cmd_ctx, NULL, "targets", handle_targets_command, COMMAND_EXEC, "change the current command line target (one parameter) or lists targets (with no parameter)");
931

932
933
934



935
	register_jim(cmd_ctx, "target", jim_target, "configure target" );
936

937
938
939
940
941
942
943
944
	return ERROR_OK;
}

int target_arch_state(struct target_s *target)
{
	int retval;
	if (target==NULL)
	{
945
		LOG_USER("No target has been configured");
946
947
		return ERROR_OK;
	}
oharboe's avatar
oharboe committed
948

949
	LOG_USER("target state: %s",
950
		 Jim_Nvp_value2name_simple(nvp_target_state,target->state)->name);
oharboe's avatar
oharboe committed
951

952
953
	if (target->state!=TARGET_HALTED)
		return ERROR_OK;
oharboe's avatar
oharboe committed
954

955
956
957
958
	retval=target->type->arch_state(target);
	return retval;
}

oharboe's avatar
oharboe committed
959
960
/* Single aligned words are guaranteed to use 16 or 32 bit access
 * mode respectively, otherwise data is handled as quickly as
961
962
963
964
965
 * possible
 */
int target_write_buffer(struct target_s *target, u32 address, u32 size, u8 *buffer)
{
	int retval;
966
967
	LOG_DEBUG("writing buffer of %i byte at 0x%8.8x", size, address);

968
969
970
971
972
	if (!target->type->examined)
	{
		LOG_ERROR("Target not examined yet");
		return ERROR_FAIL;
	}
oharboe's avatar
oharboe committed
973

974
	if ((address + size - 1) < address)
975
976
977
978
979
	{
		/* GDB can request this when e.g. PC is 0xfffffffc*/
		LOG_ERROR("address+size wrapped(0x%08x, 0x%08x)", address, size);
		return ERROR_FAIL;
	}
oharboe's avatar
oharboe committed
980

981
982
983
984
	if (((address % 2) == 0) && (size == 2))
	{
		return target->type->write_memory(target, address, 2, 1, buffer);
	}
oharboe's avatar
oharboe committed
985

986
987
988
	/* handle unaligned head bytes */
	if (address % 4)
	{
989
		u32 unaligned = 4 - (address % 4);
oharboe's avatar
oharboe committed
990

991
992
993
994
995
		if (unaligned > size)
			unaligned = size;

		if ((retval = target->type->write_memory(target, address, 1, unaligned, buffer)) != ERROR_OK)
			return retval;
oharboe's avatar
oharboe committed
996

997
998
999
1000
		buffer += unaligned;
		address += unaligned;
		size -= unaligned;
	}
oharboe's avatar
oharboe committed
1001

1002
1003
1004
1005
	/* handle aligned words */
	if (size >= 4)
	{
		int aligned = size - (size % 4);
oharboe's avatar
oharboe committed
1006

1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
		/* 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;
		}
oharboe's avatar
oharboe committed
1018

1019
1020
1021
1022
		buffer += aligned;
		address += aligned;
		size -= aligned;
	}
oharboe's avatar
oharboe committed
1023

1024
1025
1026
1027
1028
1029
	/* handle tail writes of less than 4 bytes */
	if (size > 0)
	{
		if ((retval = target->type->write_memory(target, address, 1, size, buffer)) != ERROR_OK)
			return retval;
	}
oharboe's avatar
oharboe committed
1030

1031
1032
1033
	return ERROR_OK;
}

oharboe's avatar
oharboe committed
1034
1035
/* Single aligned words are guaranteed to use 16 or 32 bit access
 * mode respectively, otherwise data is handled as quickly as
1036
1037
1038
1039
1040
 * possible
 */
int target_read_buffer(struct target_s *target, u32 address, u32 size, u8 *buffer)
{
	int retval;
1041
1042
	LOG_DEBUG("reading buffer of %i byte at 0x%8.8x", size, address);

1043
1044
1045
1046
1047
	if (!target->type->examined)
	{
		LOG_ERROR("Target not examined yet");
		return ERROR_FAIL;
	}
oharboe's avatar
oharboe committed
1048

1049
	if ((address + size - 1) < address)
1050
1051
1052
1053
1054
	{
		/* GDB can request this when e.g. PC is 0xfffffffc*/
		LOG_ERROR("address+size wrapped(0x%08x, 0x%08x)", address, size);
		return ERROR_FAIL;
	}
oharboe's avatar
oharboe committed
1055

1056
1057
1058
1059
	if (((address % 2) == 0) && (size == 2))
	{
		return target->type->read_memory(target, address, 2, 1, buffer);
	}
oharboe's avatar
oharboe committed
1060

1061
1062
1063
	/* handle unaligned head bytes */
	if (address % 4)
	{
1064
		u32 unaligned = 4 - (address % 4);
oharboe's avatar
oharboe committed
1065

1066
1067
1068
1069
1070
		if (unaligned > size)
			unaligned = size;

		if ((retval = target->type->read_memory(target, address, 1, unaligned, buffer)) != ERROR_OK)
			return retval;
oharboe's avatar
oharboe committed
1071

1072
1073
1074
1075
		buffer += unaligned;
		address += unaligned;
		size -= unaligned;
	}
oharboe's avatar
oharboe committed
1076

1077
1078
1079
1080
	/* handle aligned words */
	if (size >= 4)
	{
		int aligned = size - (size % 4);
oharboe's avatar
oharboe committed
1081

1082
1083
		if ((retval = target->type->read_memory(target, address, 4, aligned / 4, buffer)) != ERROR_OK)
			return retval;
oharboe's avatar
oharboe committed
1084

1085
1086
1087
1088
		buffer += aligned;
		address += aligned;
		size -= aligned;
	}
oharboe's avatar
oharboe committed
1089

1090
1091
1092
1093
1094
1095
	/* handle tail writes of less than 4 bytes */
	if (size > 0)
	{
		if ((retval = target->type->read_memory(target, address, 1, size, buffer)) != ERROR_OK)
			return retval;
	}
oharboe's avatar
oharboe committed
1096

1097
1098
1099
1100
1101
1102
1103
	return ERROR_OK;
}

int target_checksum_memory(struct target_s *target, u32 address, u32 size, u32* crc)
{
	u8 *buffer;
	int retval;
1104
	u32 i;
1105
	u32 checksum = 0;
1106
1107
1108
1109
1110
	if (!target->type->examined)
	{
		LOG_ERROR("Target not examined yet");
		return ERROR_FAIL;
	}
oharboe's avatar
oharboe committed
1111

1112
	if ((retval = target->type->checksum_memory(target, address,
1113
		size, &checksum)) != ERROR_OK)
1114
1115
1116
1117
	{
		buffer = malloc(size);
		if (buffer == NULL)
		{
1118
			LOG_ERROR("error allocating buffer for section (%d bytes)", size);
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
			return ERROR_INVALID_ARGUMENTS;
		}
		retval = target_read_buffer(target, address, size, buffer);
		if (retval != ERROR_OK)
		{
			free(buffer);
			return retval;
		}

		/* convert to target endianess */
		for (i = 0; i < (size/sizeof(u32)); i++)
		{
			u32 target_data;
			target_data = target_buffer_get_u32(target, &buffer[i*sizeof(u32)]);
			target_buffer_set_u32(target, &buffer[i*sizeof(u32)], target_data);
		}

		retval = image_calculate_checksum( buffer, size, &checksum );
		free(buffer);
	}
oharboe's avatar
oharboe committed
1139

1140
	*crc = checksum;
oharboe's avatar
oharboe committed
1141

1142
1143
	return retval;
}
1144
1145
1146
1147
1148
1149
1150
1151
1152

int target_blank_check_memory(struct target_s *target, u32 address, u32 size, u32* blank)
{
	int retval;
	if (!target->type->examined)
	{
		LOG_ERROR("Target not examined yet");
		return ERROR_FAIL;
	}
oharboe's avatar
oharboe committed
1153

1154
1155
	if (target->type->blank_check_memory == 0)
		return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
oharboe's avatar
oharboe committed
1156

1157
	retval = target->type->blank_check_memory(target, address, size, blank);
oharboe's avatar
oharboe committed
1158

1159
1160
	return retval;
}
1161
1162
1163
1164

int target_read_u32(struct target_s *target, u32 address, u32 *value)
{
	u8 value_buf[4];
1165
1166
1167
1168
1169
	if (!target->type->examined)
	{
		LOG_ERROR("Target not examined yet");
		return ERROR_FAIL;
	}
1170
1171

	int retval = target->type->read_memory(target, address, 4, 1, value_buf);
oharboe's avatar
oharboe committed
1172

1173
1174
1175
	if (retval == ERROR_OK)
	{
		*value = target_buffer_get_u32(target, value_buf);
1176
		LOG_DEBUG("address: 0x%8.8x, value: 0x%8.8x", address, *value);
1177
1178
1179
1180
	}
	else
	{
		*value = 0x0;
1181
		LOG_DEBUG("address: 0x%8.8x failed", address);
1182
	}
oharboe's avatar
oharboe committed
1183

1184
1185
1186
1187
1188
1189
	return retval;
}

int target_read_u16(struct target_s *target, u32 address, u16 *value)
{
	u8 value_buf[2];
1190
1191
1192
1193
1194
1195
	if (!target->type->examined)
	{
		LOG_ERROR("Target not examined yet");
		return ERROR_FAIL;
	}

1196
	int retval = target->type->read_memory(target, address, 2, 1, value_buf);
oharboe's avatar
oharboe committed
1197