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Simplify jtag_execute_queue_noclear:
[openocd.git] / src / jtag / jtag.c
1 /***************************************************************************
2 * Copyright (C) 2005 by Dominic Rath *
3 * Dominic.Rath@gmx.de *
4 * *
5 * Copyright (C) 2007,2008 Øyvind Harboe *
6 * oyvind.harboe@zylin.com *
7 * *
8 * Copyright (C) 2009 SoftPLC Corporation *
9 * http://softplc.com *
10 * dick@softplc.com *
11 * *
12 * This program is free software; you can redistribute it and/or modify *
13 * it under the terms of the GNU General Public License as published by *
14 * the Free Software Foundation; either version 2 of the License, or *
15 * (at your option) any later version. *
16 * *
17 * This program is distributed in the hope that it will be useful, *
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
20 * GNU General Public License for more details. *
21 * *
22 * You should have received a copy of the GNU General Public License *
23 * along with this program; if not, write to the *
24 * Free Software Foundation, Inc., *
25 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
26 ***************************************************************************/
27 #ifdef HAVE_CONFIG_H
28 #include "config.h"
29 #endif
30
31 #include "jtag.h"
32 #include "minidriver.h"
33 #include "interface.h"
34
35 #ifdef HAVE_STRINGS_H
36 #include <strings.h>
37 #endif
38
39
40 /// The number of JTAG queue flushes (for profiling and debugging purposes).
41 static int jtag_flush_queue_count;
42
43 static void jtag_add_scan_check(void (*jtag_add_scan)(int in_num_fields, const scan_field_t *in_fields, tap_state_t state),
44 int in_num_fields, scan_field_t *in_fields, tap_state_t state);
45
46 /* note that this is not marked as static as it must be available from outside jtag.c for those
47 that implement the jtag_xxx() minidriver layer
48 */
49 int jtag_error=ERROR_OK;
50
51 char* jtag_event_strings[] =
52 {
53 "JTAG controller reset (RESET or TRST)"
54 };
55
56 const Jim_Nvp nvp_jtag_tap_event[] = {
57 { .value = JTAG_TAP_EVENT_ENABLE, .name = "tap-enable" },
58 { .value = JTAG_TAP_EVENT_DISABLE, .name = "tap-disable" },
59
60 { .name = NULL, .value = -1 }
61 };
62
63 int jtag_trst = 0;
64 int jtag_srst = 0;
65
66 /**
67 * List all TAPs that have been created.
68 */
69 static jtag_tap_t *__jtag_all_taps = NULL;
70 /**
71 * The number of TAPs in the __jtag_all_taps list, used to track the
72 * assigned chain position to new TAPs
73 */
74 static int jtag_num_taps = 0;
75
76 enum reset_types jtag_reset_config = RESET_NONE;
77 tap_state_t cmd_queue_end_state = TAP_RESET;
78 tap_state_t cmd_queue_cur_state = TAP_RESET;
79
80 int jtag_verify_capture_ir = 1;
81 int jtag_verify = 1;
82
83 /* how long the OpenOCD should wait before attempting JTAG communication after reset lines deasserted (in ms) */
84 static int jtag_nsrst_delay = 0; /* default to no nSRST delay */
85 static int jtag_ntrst_delay = 0; /* default to no nTRST delay */
86
87 /* callbacks to inform high-level handlers about JTAG state changes */
88 jtag_event_callback_t *jtag_event_callbacks;
89
90 /* speed in kHz*/
91 static int speed_khz = 0;
92 /* flag if the kHz speed was defined */
93 static bool hasKHz = false;
94
95 /* jtag interfaces (parport, FTDI-USB, TI-USB, ...)
96 */
97
98 #if BUILD_ECOSBOARD == 1
99 extern jtag_interface_t zy1000_interface;
100 #elif defined(BUILD_MINIDRIVER_DUMMY)
101 extern jtag_interface_t minidummy_interface;
102 #else // standard drivers
103 #if BUILD_PARPORT == 1
104 extern jtag_interface_t parport_interface;
105 #endif
106
107 #if BUILD_DUMMY == 1
108 extern jtag_interface_t dummy_interface;
109 #endif
110
111 #if BUILD_FT2232_FTD2XX == 1
112 extern jtag_interface_t ft2232_interface;
113 #endif
114
115 #if BUILD_FT2232_LIBFTDI == 1
116 extern jtag_interface_t ft2232_interface;
117 #endif
118
119 #if BUILD_AMTJTAGACCEL == 1
120 extern jtag_interface_t amt_jtagaccel_interface;
121 #endif
122
123 #if BUILD_EP93XX == 1
124 extern jtag_interface_t ep93xx_interface;
125 #endif
126
127 #if BUILD_AT91RM9200 == 1
128 extern jtag_interface_t at91rm9200_interface;
129 #endif
130
131 #if BUILD_GW16012 == 1
132 extern jtag_interface_t gw16012_interface;
133 #endif
134
135 #if BUILD_PRESTO_LIBFTDI == 1 || BUILD_PRESTO_FTD2XX == 1
136 extern jtag_interface_t presto_interface;
137 #endif
138
139 #if BUILD_USBPROG == 1
140 extern jtag_interface_t usbprog_interface;
141 #endif
142
143 #if BUILD_JLINK == 1
144 extern jtag_interface_t jlink_interface;
145 #endif
146
147 #if BUILD_VSLLINK == 1
148 extern jtag_interface_t vsllink_interface;
149 #endif
150
151 #if BUILD_RLINK == 1
152 extern jtag_interface_t rlink_interface;
153 #endif
154
155 #if BUILD_ARMJTAGEW == 1
156 extern jtag_interface_t armjtagew_interface;
157 #endif
158 #endif // standard drivers
159
160 /**
161 * The list of built-in JTAG interfaces, containing entries for those
162 * drivers that were enabled by the @c configure script.
163 *
164 * The list should be defined to contain either one minidriver interface
165 * or some number of standard driver interfaces, never both.
166 */
167 jtag_interface_t *jtag_interfaces[] = {
168 #if BUILD_ECOSBOARD == 1
169 &zy1000_interface,
170 #elif defined(BUILD_MINIDRIVER_DUMMY)
171 &minidummy_interface,
172 #else // standard drivers
173 #if BUILD_PARPORT == 1
174 &parport_interface,
175 #endif
176 #if BUILD_DUMMY == 1
177 &dummy_interface,
178 #endif
179 #if BUILD_FT2232_FTD2XX == 1
180 &ft2232_interface,
181 #endif
182 #if BUILD_FT2232_LIBFTDI == 1
183 &ft2232_interface,
184 #endif
185 #if BUILD_AMTJTAGACCEL == 1
186 &amt_jtagaccel_interface,
187 #endif
188 #if BUILD_EP93XX == 1
189 &ep93xx_interface,
190 #endif
191 #if BUILD_AT91RM9200 == 1
192 &at91rm9200_interface,
193 #endif
194 #if BUILD_GW16012 == 1
195 &gw16012_interface,
196 #endif
197 #if BUILD_PRESTO_LIBFTDI == 1 || BUILD_PRESTO_FTD2XX == 1
198 &presto_interface,
199 #endif
200 #if BUILD_USBPROG == 1
201 &usbprog_interface,
202 #endif
203 #if BUILD_JLINK == 1
204 &jlink_interface,
205 #endif
206 #if BUILD_VSLLINK == 1
207 &vsllink_interface,
208 #endif
209 #if BUILD_RLINK == 1
210 &rlink_interface,
211 #endif
212 #if BUILD_ARMJTAGEW == 1
213 &armjtagew_interface,
214 #endif
215 #endif // standard drivers
216 NULL,
217 };
218
219 struct jtag_interface_s *jtag = NULL;
220
221 /* configuration */
222 static jtag_interface_t *jtag_interface = NULL;
223 int jtag_speed = 0;
224
225 /* jtag commands */
226 static int handle_interface_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
227 static int handle_jtag_speed_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
228 static int handle_jtag_khz_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
229 static int handle_jtag_device_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
230 static int handle_reset_config_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
231 static int handle_jtag_nsrst_delay_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
232 static int handle_jtag_ntrst_delay_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
233
234 static int handle_scan_chain_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
235
236 static int handle_jtag_reset_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
237 static int handle_runtest_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
238 static int handle_irscan_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
239 static int Jim_Command_drscan(Jim_Interp *interp, int argc, Jim_Obj *const *argv);
240 static int Jim_Command_flush_count(Jim_Interp *interp, int argc, Jim_Obj *const *args);
241
242 static int handle_verify_ircapture_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
243 static int handle_verify_jtag_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
244 static int handle_tms_sequence_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
245
246 jtag_tap_t *jtag_all_taps(void)
247 {
248 return __jtag_all_taps;
249 };
250
251 int jtag_tap_count(void)
252 {
253 return jtag_num_taps;
254 }
255
256 unsigned jtag_tap_count_enabled(void)
257 {
258 jtag_tap_t *t;
259 unsigned n;
260
261 n = 0;
262 t = jtag_all_taps();
263 while(t){
264 if( t->enabled ){
265 n++;
266 }
267 t = t->next_tap;
268 }
269 return n;
270 }
271
272 /// Append a new TAP to the chain of all taps.
273 static void jtag_tap_add(struct jtag_tap_s *t)
274 {
275 t->abs_chain_position = jtag_num_taps++;
276
277 jtag_tap_t **tap = &__jtag_all_taps;
278 while(*tap != NULL)
279 tap = &(*tap)->next_tap;
280 *tap = t;
281 }
282
283 jtag_tap_t *jtag_tap_by_string( const char *s )
284 {
285 jtag_tap_t *t;
286 char *cp;
287
288 t = jtag_all_taps();
289 /* try name first */
290 while(t){
291 if( 0 == strcmp( t->dotted_name, s ) ){
292 break;
293 } else {
294 t = t->next_tap;
295 }
296 }
297 /* backup plan is by number */
298 if( t == NULL ){
299 /* ok - is "s" a number? */
300 int n;
301 n = strtol( s, &cp, 0 );
302 if( (s != cp) && (*cp == 0) ){
303 /* Then it is... */
304 t = jtag_tap_by_abs_position(n);
305 }
306 }
307 return t;
308 }
309
310 jtag_tap_t * jtag_tap_by_jim_obj( Jim_Interp *interp, Jim_Obj *o )
311 {
312 jtag_tap_t *t;
313 const char *cp;
314
315 cp = Jim_GetString( o, NULL );
316 if(cp == NULL){
317 cp = "(unknown)";
318 t = NULL;
319 } else {
320 t = jtag_tap_by_string( cp );
321 }
322 if( t == NULL ){
323 Jim_SetResult_sprintf(interp,"Tap: %s is unknown", cp );
324 }
325 return t;
326 }
327
328 /* returns a pointer to the n-th device in the scan chain */
329 jtag_tap_t * jtag_tap_by_abs_position( int n )
330 {
331 int orig_n;
332 jtag_tap_t *t;
333
334 orig_n = n;
335 t = jtag_all_taps();
336
337 while( t && (n > 0)) {
338 n--;
339 t = t->next_tap;
340 }
341 return t;
342 }
343
344 const char *jtag_tap_name(const jtag_tap_t *tap)
345 {
346 return (tap == NULL) ? "(unknown)" : tap->dotted_name;
347 }
348
349
350 int jtag_register_event_callback(int (*callback)(enum jtag_event event, void *priv), void *priv)
351 {
352 jtag_event_callback_t **callbacks_p = &jtag_event_callbacks;
353
354 if (callback == NULL)
355 {
356 return ERROR_INVALID_ARGUMENTS;
357 }
358
359 if (*callbacks_p)
360 {
361 while ((*callbacks_p)->next)
362 callbacks_p = &((*callbacks_p)->next);
363 callbacks_p = &((*callbacks_p)->next);
364 }
365
366 (*callbacks_p) = malloc(sizeof(jtag_event_callback_t));
367 (*callbacks_p)->callback = callback;
368 (*callbacks_p)->priv = priv;
369 (*callbacks_p)->next = NULL;
370
371 return ERROR_OK;
372 }
373
374 int jtag_unregister_event_callback(int (*callback)(enum jtag_event event, void *priv))
375 {
376 jtag_event_callback_t **callbacks_p = &jtag_event_callbacks;
377
378 if (callback == NULL)
379 {
380 return ERROR_INVALID_ARGUMENTS;
381 }
382
383 while (*callbacks_p)
384 {
385 jtag_event_callback_t **next = &((*callbacks_p)->next);
386 if ((*callbacks_p)->callback == callback)
387 {
388 free(*callbacks_p);
389 *callbacks_p = *next;
390 }
391 callbacks_p = next;
392 }
393
394 return ERROR_OK;
395 }
396
397 int jtag_call_event_callbacks(enum jtag_event event)
398 {
399 jtag_event_callback_t *callback = jtag_event_callbacks;
400
401 LOG_DEBUG("jtag event: %s", jtag_event_strings[event]);
402
403 while (callback)
404 {
405 callback->callback(event, callback->priv);
406 callback = callback->next;
407 }
408
409 return ERROR_OK;
410 }
411
412 static void jtag_checks(void)
413 {
414 assert(jtag_trst == 0);
415 }
416
417 static void jtag_prelude(tap_state_t state)
418 {
419 jtag_checks();
420
421 assert(state!=TAP_INVALID);
422
423 cmd_queue_cur_state = state;
424 }
425
426 void jtag_alloc_in_value32(scan_field_t *field)
427 {
428 interface_jtag_alloc_in_value32(field);
429 }
430
431 void jtag_add_ir_scan_noverify(int in_num_fields, const scan_field_t *in_fields, tap_state_t state)
432 {
433 int retval;
434 jtag_prelude(state);
435
436 retval=interface_jtag_add_ir_scan(in_num_fields, in_fields, state);
437 if (retval!=ERROR_OK)
438 jtag_error=retval;
439
440 }
441
442
443 /**
444 * Generate an IR SCAN with a list of scan fields with one entry for each enabled TAP.
445 *
446 * If the input field list contains an instruction value for a TAP then that is used
447 * otherwise the TAP is set to bypass.
448 *
449 * TAPs for which no fields are passed are marked as bypassed for subsequent DR SCANs.
450 *
451 */
452 void jtag_add_ir_scan(int in_num_fields, scan_field_t *in_fields, tap_state_t state)
453 {
454 if (jtag_verify&&jtag_verify_capture_ir)
455 {
456 /* 8 x 32 bit id's is enough for all invocations */
457
458 for (int j = 0; j < in_num_fields; j++)
459 {
460 /* if we are to run a verification of the ir scan, we need to get the input back.
461 * We may have to allocate space if the caller didn't ask for the input back.
462 */
463 in_fields[j].check_value=in_fields[j].tap->expected;
464 in_fields[j].check_mask=in_fields[j].tap->expected_mask;
465 }
466 jtag_add_scan_check(jtag_add_ir_scan_noverify, in_num_fields, in_fields, state);
467 } else
468 {
469 jtag_add_ir_scan_noverify(in_num_fields, in_fields, state);
470 }
471 }
472
473 /**
474 * Duplicate the scan fields passed into the function into an IR SCAN command
475 *
476 * This function assumes that the caller handles extra fields for bypassed TAPs
477 *
478 */
479 void jtag_add_plain_ir_scan(int in_num_fields, const scan_field_t *in_fields, tap_state_t state)
480 {
481 int retval;
482
483 jtag_prelude(state);
484
485 retval=interface_jtag_add_plain_ir_scan(in_num_fields, in_fields, state);
486 if (retval!=ERROR_OK)
487 jtag_error=retval;
488 }
489
490 void jtag_add_callback(jtag_callback1_t f, u8 *in)
491 {
492 interface_jtag_add_callback(f, in);
493 }
494
495 void jtag_add_callback4(jtag_callback_t f, u8 *in,
496 jtag_callback_data_t data1, jtag_callback_data_t data2,
497 jtag_callback_data_t data3)
498 {
499 interface_jtag_add_callback4(f, in, data1, data2, data3);
500 }
501
502 int jtag_check_value_inner(u8 *captured, u8 *in_check_value, u8 *in_check_mask, int num_bits);
503
504 static int jtag_check_value_mask_callback(u8 *in, jtag_callback_data_t data1, jtag_callback_data_t data2, jtag_callback_data_t data3)
505 {
506 return jtag_check_value_inner(in, (u8 *)data1, (u8 *)data2, (int)data3);
507 }
508
509 static void jtag_add_scan_check(void (*jtag_add_scan)(int in_num_fields, const scan_field_t *in_fields, tap_state_t state),
510 int in_num_fields, scan_field_t *in_fields, tap_state_t state)
511 {
512 for (int i = 0; i < in_num_fields; i++)
513 {
514 struct scan_field_s *field = &in_fields[i];
515 field->allocated = 0;
516 field->modified = 0;
517 if (field->check_value || field->in_value)
518 continue;
519 interface_jtag_add_scan_check_alloc(field);
520 field->modified = 1;
521 }
522
523 jtag_add_scan(in_num_fields, in_fields, state);
524
525 for (int i = 0; i < in_num_fields; i++)
526 {
527 if ((in_fields[i].check_value != NULL) && (in_fields[i].in_value != NULL))
528 {
529 /* this is synchronous for a minidriver */
530 jtag_add_callback4(jtag_check_value_mask_callback, in_fields[i].in_value,
531 (jtag_callback_data_t)in_fields[i].check_value,
532 (jtag_callback_data_t)in_fields[i].check_mask,
533 (jtag_callback_data_t)in_fields[i].num_bits);
534 }
535 if (in_fields[i].allocated)
536 {
537 free(in_fields[i].in_value);
538 }
539 if (in_fields[i].modified)
540 {
541 in_fields[i].in_value = NULL;
542 }
543 }
544 }
545
546 void jtag_add_dr_scan_check(int in_num_fields, scan_field_t *in_fields, tap_state_t state)
547 {
548 if (jtag_verify)
549 {
550 jtag_add_scan_check(jtag_add_dr_scan, in_num_fields, in_fields, state);
551 } else
552 {
553 jtag_add_dr_scan(in_num_fields, in_fields, state);
554 }
555 }
556
557
558 /**
559 * Generate a DR SCAN using the fields passed to the function
560 *
561 * For not bypassed TAPs the function checks in_fields and uses fields specified there.
562 * For bypassed TAPs the function generates a dummy 1bit field.
563 *
564 * The bypass status of TAPs is set by jtag_add_ir_scan().
565 *
566 */
567 void jtag_add_dr_scan(int in_num_fields, const scan_field_t *in_fields, tap_state_t state)
568 {
569 int retval;
570
571 jtag_prelude(state);
572
573 retval=interface_jtag_add_dr_scan(in_num_fields, in_fields, state);
574 if (retval!=ERROR_OK)
575 jtag_error=retval;
576 }
577
578
579
580 /**
581 * Duplicate the scan fields passed into the function into a DR SCAN command
582 *
583 * This function assumes that the caller handles extra fields for bypassed TAPs
584 *
585 */
586 void jtag_add_plain_dr_scan(int in_num_fields, const scan_field_t *in_fields, tap_state_t state)
587 {
588 int retval;
589
590 jtag_prelude(state);
591
592 retval=interface_jtag_add_plain_dr_scan(in_num_fields, in_fields, state);
593 if (retval!=ERROR_OK)
594 jtag_error=retval;
595 }
596
597 void jtag_add_dr_out(jtag_tap_t* tap,
598 int num_fields, const int* num_bits, const u32* value,
599 tap_state_t end_state)
600 {
601 assert(end_state != TAP_INVALID);
602
603 cmd_queue_cur_state = end_state;
604
605 interface_jtag_add_dr_out(tap,
606 num_fields, num_bits, value,
607 end_state);
608 }
609
610 void jtag_add_tlr(void)
611 {
612 jtag_prelude(TAP_RESET);
613
614 int retval;
615 retval=interface_jtag_add_tlr();
616 if (retval!=ERROR_OK)
617 jtag_error=retval;
618
619 jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
620 }
621
622 void jtag_add_pathmove(int num_states, const tap_state_t *path)
623 {
624 tap_state_t cur_state = cmd_queue_cur_state;
625 int i;
626 int retval;
627
628 /* the last state has to be a stable state */
629 if (!tap_is_state_stable(path[num_states - 1]))
630 {
631 LOG_ERROR("BUG: TAP path doesn't finish in a stable state");
632 exit(-1);
633 }
634
635 for (i=0; i<num_states; i++)
636 {
637 if (path[i] == TAP_RESET)
638 {
639 LOG_ERROR("BUG: TAP_RESET is not a valid state for pathmove sequences");
640 exit(-1);
641 }
642
643 if ( tap_state_transition(cur_state, true) != path[i]
644 && tap_state_transition(cur_state, false) != path[i])
645 {
646 LOG_ERROR("BUG: %s -> %s isn't a valid TAP transition", tap_state_name(cur_state), tap_state_name(path[i]));
647 exit(-1);
648 }
649 cur_state = path[i];
650 }
651
652 jtag_checks();
653
654 retval = interface_jtag_add_pathmove(num_states, path);
655 cmd_queue_cur_state = path[num_states - 1];
656 if (retval!=ERROR_OK)
657 jtag_error=retval;
658 }
659
660 void jtag_add_runtest(int num_cycles, tap_state_t state)
661 {
662 int retval;
663
664 jtag_prelude(state);
665
666 /* executed by sw or hw fifo */
667 retval=interface_jtag_add_runtest(num_cycles, state);
668 if (retval!=ERROR_OK)
669 jtag_error=retval;
670 }
671
672
673 void jtag_add_clocks( int num_cycles )
674 {
675 int retval;
676
677 if( !tap_is_state_stable(cmd_queue_cur_state) )
678 {
679 LOG_ERROR( "jtag_add_clocks() was called with TAP in non-stable state \"%s\"",
680 tap_state_name(cmd_queue_cur_state) );
681 jtag_error = ERROR_JTAG_NOT_STABLE_STATE;
682 return;
683 }
684
685 if( num_cycles > 0 )
686 {
687 jtag_checks();
688
689 retval = interface_jtag_add_clocks(num_cycles);
690 if (retval != ERROR_OK)
691 jtag_error=retval;
692 }
693 }
694
695 void jtag_add_reset(int req_tlr_or_trst, int req_srst)
696 {
697 int trst_with_tlr = 0;
698 int retval;
699
700 /* FIX!!! there are *many* different cases here. A better
701 * approach is needed for legal combinations of transitions...
702 */
703 if ((jtag_reset_config & RESET_HAS_SRST)&&
704 (jtag_reset_config & RESET_HAS_TRST)&&
705 ((jtag_reset_config & RESET_SRST_PULLS_TRST)==0))
706 {
707 if (((req_tlr_or_trst&&!jtag_trst)||
708 (!req_tlr_or_trst&&jtag_trst))&&
709 ((req_srst&&!jtag_srst)||
710 (!req_srst&&jtag_srst)))
711 {
712 /* FIX!!! srst_pulls_trst allows 1,1 => 0,0 transition.... */
713 //LOG_ERROR("BUG: transition of req_tlr_or_trst and req_srst in the same jtag_add_reset() call is undefined");
714 }
715 }
716
717 /* Make sure that jtag_reset_config allows the requested reset */
718 /* if SRST pulls TRST, we can't fulfill srst == 1 with trst == 0 */
719 if (((jtag_reset_config & RESET_SRST_PULLS_TRST) && (req_srst == 1)) && (!req_tlr_or_trst))
720 {
721 LOG_ERROR("BUG: requested reset would assert trst");
722 jtag_error=ERROR_FAIL;
723 return;
724 }
725
726 /* if TRST pulls SRST, we reset with TAP T-L-R */
727 if (((jtag_reset_config & RESET_TRST_PULLS_SRST) && (req_tlr_or_trst)) && (req_srst == 0))
728 {
729 trst_with_tlr = 1;
730 }
731
732 if (req_srst && !(jtag_reset_config & RESET_HAS_SRST))
733 {
734 LOG_ERROR("BUG: requested SRST assertion, but the current configuration doesn't support this");
735 jtag_error=ERROR_FAIL;
736 return;
737 }
738
739 if (req_tlr_or_trst)
740 {
741 if (!trst_with_tlr && (jtag_reset_config & RESET_HAS_TRST))
742 {
743 jtag_trst = 1;
744 } else
745 {
746 trst_with_tlr = 1;
747 }
748 } else
749 {
750 jtag_trst = 0;
751 }
752
753 jtag_srst = req_srst;
754
755 retval = interface_jtag_add_reset(jtag_trst, jtag_srst);
756 if (retval!=ERROR_OK)
757 {
758 jtag_error=retval;
759 return;
760 }
761 jtag_execute_queue();
762
763 if (jtag_srst)
764 {
765 LOG_DEBUG("SRST line asserted");
766 }
767 else
768 {
769 LOG_DEBUG("SRST line released");
770 if (jtag_nsrst_delay)
771 jtag_add_sleep(jtag_nsrst_delay * 1000);
772 }
773
774 if (trst_with_tlr)
775 {
776 LOG_DEBUG("JTAG reset with RESET instead of TRST");
777 jtag_set_end_state(TAP_RESET);
778 jtag_add_tlr();
779 return;
780 }
781
782 if (jtag_trst)
783 {
784 /* we just asserted nTRST, so we're now in Test-Logic-Reset,
785 * and inform possible listeners about this
786 */
787 LOG_DEBUG("TRST line asserted");
788 tap_set_state(TAP_RESET);
789 jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
790 }
791 else
792 {
793 if (jtag_ntrst_delay)
794 jtag_add_sleep(jtag_ntrst_delay * 1000);
795 }
796 }
797
798 tap_state_t jtag_set_end_state(tap_state_t state)
799 {
800 if ((state == TAP_DRSHIFT)||(state == TAP_IRSHIFT))
801 {
802 LOG_ERROR("BUG: TAP_DRSHIFT/IRSHIFT can't be end state. Calling code should use a larger scan field");
803 }
804
805 if (state!=TAP_INVALID)
806 cmd_queue_end_state = state;
807 return cmd_queue_end_state;
808 }
809
810 tap_state_t jtag_get_end_state(void)
811 {
812 return cmd_queue_end_state;
813 }
814
815 void jtag_add_sleep(u32 us)
816 {
817 keep_alive(); /* we might be running on a very slow JTAG clk */
818 int retval=interface_jtag_add_sleep(us);
819 if (retval!=ERROR_OK)
820 jtag_error=retval;
821 return;
822 }
823
824 int jtag_check_value_inner(u8 *captured, u8 *in_check_value, u8 *in_check_mask, int num_bits)
825 {
826 int retval = ERROR_OK;
827
828 int compare_failed = 0;
829
830 if (in_check_mask)
831 compare_failed = buf_cmp_mask(captured, in_check_value, in_check_mask, num_bits);
832 else
833 compare_failed = buf_cmp(captured, in_check_value, num_bits);
834
835 if (compare_failed){
836 /* An error handler could have caught the failing check
837 * only report a problem when there wasn't a handler, or if the handler
838 * acknowledged the error
839 */
840 /*
841 LOG_WARNING("TAP %s:",
842 jtag_tap_name(field->tap));
843 */
844 if (compare_failed)
845 {
846 char *captured_char = buf_to_str(captured, (num_bits > DEBUG_JTAG_IOZ) ? DEBUG_JTAG_IOZ : num_bits, 16);
847 char *in_check_value_char = buf_to_str(in_check_value, (num_bits > DEBUG_JTAG_IOZ) ? DEBUG_JTAG_IOZ : num_bits, 16);
848
849 if (in_check_mask)
850 {
851 char *in_check_mask_char;
852 in_check_mask_char = buf_to_str(in_check_mask, (num_bits > DEBUG_JTAG_IOZ) ? DEBUG_JTAG_IOZ : num_bits, 16);
853 LOG_WARNING("value captured during scan didn't pass the requested check:");
854 LOG_WARNING("captured: 0x%s check_value: 0x%s check_mask: 0x%s",
855 captured_char, in_check_value_char, in_check_mask_char);
856 free(in_check_mask_char);
857 }
858 else
859 {
860 LOG_WARNING("value captured during scan didn't pass the requested check: captured: 0x%s check_value: 0x%s", captured_char, in_check_value_char);
861 }
862
863 free(captured_char);
864 free(in_check_value_char);
865
866 retval = ERROR_JTAG_QUEUE_FAILED;
867 }
868
869 }
870 return retval;
871 }
872
873 void jtag_check_value_mask(scan_field_t *field, u8 *value, u8 *mask)
874 {
875 assert(field->in_value != NULL);
876
877 if (value==NULL)
878 {
879 /* no checking to do */
880 return;
881 }
882
883 jtag_execute_queue_noclear();
884
885 int retval=jtag_check_value_inner(field->in_value, value, mask, field->num_bits);
886 jtag_set_error(retval);
887 }
888
889
890
891 int default_interface_jtag_execute_queue(void)
892 {
893 if (NULL == jtag)
894 {
895 LOG_ERROR("No JTAG interface configured yet. "
896 "Issue 'init' command in startup scripts "
897 "before communicating with targets.");
898 return ERROR_FAIL;
899 }
900
901 return jtag->execute_queue();
902 }
903
904 void jtag_execute_queue_noclear(void)
905 {
906 jtag_flush_queue_count++;
907 jtag_set_error(interface_jtag_execute_queue());
908 }
909
910 int jtag_get_flush_queue_count(void)
911 {
912 return jtag_flush_queue_count;
913 }
914
915 int jtag_execute_queue(void)
916 {
917 int retval;
918 jtag_execute_queue_noclear();
919 retval=jtag_error;
920 jtag_error=ERROR_OK;
921 return retval;
922 }
923
924 static int jtag_reset_callback(enum jtag_event event, void *priv)
925 {
926 jtag_tap_t *tap = priv;
927
928 LOG_DEBUG("-");
929
930 if (event == JTAG_TRST_ASSERTED)
931 {
932 buf_set_ones(tap->cur_instr, tap->ir_length);
933 tap->bypass = 1;
934 }
935
936 return ERROR_OK;
937 }
938
939 void jtag_sleep(u32 us)
940 {
941 alive_sleep(us/1000);
942 }
943
944 /// maximum number of JTAG devices expected in the chain
945 #define JTAG_MAX_CHAIN_SIZE 20
946
947 #define EXTRACT_MFG(X) (((X) & 0xffe) >> 1)
948 #define EXTRACT_PART(X) (((X) & 0xffff000) >> 12)
949 #define EXTRACT_VER(X) (((X) & 0xf0000000) >> 28)
950
951 static int jtag_examine_chain_execute(u8 *idcode_buffer, unsigned num_idcode)
952 {
953 scan_field_t field = {
954 .tap = NULL,
955 .num_bits = num_idcode * 32,
956 .out_value = idcode_buffer,
957 .in_value = idcode_buffer,
958 };
959
960 // initialize to the end of chain ID value
961 for (unsigned i = 0; i < JTAG_MAX_CHAIN_SIZE; i++)
962 buf_set_u32(idcode_buffer, i * 32, 32, 0x000000FF);
963
964 jtag_add_plain_dr_scan(1, &field, TAP_RESET);
965 return jtag_execute_queue();
966 }
967
968 static bool jtag_examine_chain_check(u8 *idcodes, unsigned count)
969 {
970 u8 zero_check = 0x0;
971 u8 one_check = 0xff;
972
973 for (unsigned i = 0; i < count * 4; i++)
974 {
975 zero_check |= idcodes[i];
976 one_check &= idcodes[i];
977 }
978
979 /* if there wasn't a single non-zero bit or if all bits were one,
980 * the scan is not valid */
981 if (zero_check == 0x00 || one_check == 0xff)
982 {
983 LOG_ERROR("JTAG communication failure: check connection, "
984 "JTAG interface, target power etc.");
985 return false;
986 }
987 return true;
988 }
989
990 static void jtag_examine_chain_display(enum log_levels level, const char *msg,
991 const char *name, u32 idcode)
992 {
993 log_printf_lf(level, __FILE__, __LINE__, __FUNCTION__,
994 "JTAG tap: %s %16.16s: 0x%08x "
995 "(mfg: 0x%3.3x, part: 0x%4.4x, ver: 0x%1.1x)",
996 name, msg, idcode,
997 EXTRACT_MFG(idcode), EXTRACT_PART(idcode), EXTRACT_VER(idcode) );
998 }
999
1000 static bool jtag_idcode_is_final(u32 idcode)
1001 {
1002 return idcode == 0x000000FF || idcode == 0xFFFFFFFF;
1003 }
1004
1005 /**
1006 * This helper checks that remaining bits in the examined chain data are
1007 * all as expected, but a single JTAG device requires only 64 bits to be
1008 * read back correctly. This can help identify and diagnose problems
1009 * with the JTAG chain earlier, gives more helpful/explicit error messages.
1010 */
1011 static void jtag_examine_chain_end(u8 *idcodes, unsigned count, unsigned max)
1012 {
1013 bool triggered = false;
1014 for ( ; count < max - 31; count += 32)
1015 {
1016 u32 idcode = buf_get_u32(idcodes, count, 32);
1017 // do not trigger the warning if the data looks good
1018 if (!triggered && jtag_idcode_is_final(idcode))
1019 continue;
1020 LOG_WARNING("Unexpected idcode after end of chain: %d 0x%08x",
1021 count, idcode);
1022 triggered = true;
1023 }
1024 }
1025
1026 static bool jtag_examine_chain_match_tap(const struct jtag_tap_s *tap)
1027 {
1028 if (0 == tap->expected_ids_cnt)
1029 {
1030 /// @todo Enable LOG_INFO to ask for reports about unknown TAP IDs.
1031 #if 0
1032 LOG_INFO("Uknown JTAG TAP ID: 0x%08x", tap->idcode)
1033 LOG_INFO("Please report the chip name and reported ID code to the openocd project");
1034 #endif
1035 return true;
1036 }
1037
1038 /* Loop over the expected identification codes and test for a match */
1039 u8 ii;
1040 for (ii = 0; ii < tap->expected_ids_cnt; ii++)
1041 {
1042 if (tap->idcode == tap->expected_ids[ii])
1043 break;
1044 }
1045
1046 /* If none of the expected ids matched, log an error */
1047 if (ii != tap->expected_ids_cnt)
1048 {
1049 LOG_INFO("JTAG Tap/device matched");
1050 return true;
1051 }
1052 jtag_examine_chain_display(LOG_LVL_ERROR, "got",
1053 tap->dotted_name, tap->idcode);
1054 for (ii = 0; ii < tap->expected_ids_cnt; ii++)
1055 {
1056 char msg[32];
1057 snprintf(msg, sizeof(msg), "expected %hhu of %hhu",
1058 ii + 1, tap->expected_ids_cnt);
1059 jtag_examine_chain_display(LOG_LVL_ERROR, msg,
1060 tap->dotted_name, tap->expected_ids[ii]);
1061 }
1062 return false;
1063 }
1064
1065 /* Try to examine chain layout according to IEEE 1149.1 §12
1066 */
1067 static int jtag_examine_chain(void)
1068 {
1069 u8 idcode_buffer[JTAG_MAX_CHAIN_SIZE * 4];
1070 unsigned device_count = 0;
1071
1072 jtag_examine_chain_execute(idcode_buffer, JTAG_MAX_CHAIN_SIZE);
1073
1074 if (!jtag_examine_chain_check(idcode_buffer, JTAG_MAX_CHAIN_SIZE))
1075 return ERROR_JTAG_INIT_FAILED;
1076
1077 /* point at the 1st tap */
1078 jtag_tap_t *tap = jtag_tap_next_enabled(NULL);
1079 if (tap == NULL)
1080 {
1081 LOG_ERROR("JTAG: No taps enabled?");
1082 return ERROR_JTAG_INIT_FAILED;
1083 }
1084
1085 for (unsigned bit_count = 0; bit_count < (JTAG_MAX_CHAIN_SIZE * 32) - 31;)
1086 {
1087 u32 idcode = buf_get_u32(idcode_buffer, bit_count, 32);
1088 if ((idcode & 1) == 0)
1089 {
1090 /* LSB must not be 0, this indicates a device in bypass */
1091 LOG_WARNING("Tap/Device does not have IDCODE");
1092 idcode = 0;
1093
1094 bit_count += 1;
1095 }
1096 else
1097 {
1098 /*
1099 * End of chain (invalid manufacturer ID) some devices, such
1100 * as AVR will output all 1's instead of TDI input value at
1101 * end of chain.
1102 */
1103 if (jtag_idcode_is_final(idcode))
1104 {
1105 jtag_examine_chain_end(idcode_buffer,
1106 bit_count + 32, JTAG_MAX_CHAIN_SIZE * 32);
1107 break;
1108 }
1109
1110 jtag_examine_chain_display(LOG_LVL_INFO, "tap/device found",
1111 tap ? tap->dotted_name : "(not-named)",
1112 idcode);
1113
1114 bit_count += 32;
1115 }
1116 device_count++;
1117 if (!tap)
1118 continue;
1119
1120 tap->idcode = idcode;
1121
1122 // ensure the TAP ID does matches what was expected
1123 if (!jtag_examine_chain_match_tap(tap))
1124 return ERROR_JTAG_INIT_FAILED;
1125
1126 tap = jtag_tap_next_enabled(tap);
1127 }
1128
1129 /* see if number of discovered devices matches configuration */
1130 if (device_count != jtag_tap_count_enabled())
1131 {
1132 LOG_ERROR("number of discovered devices in JTAG chain (%i) "
1133 "does not match (enabled) configuration (%i), total taps: %d",
1134 device_count, jtag_tap_count_enabled(), jtag_tap_count());
1135 LOG_ERROR("check the config file and ensure proper JTAG communication"
1136 " (connections, speed, ...)");
1137 return ERROR_JTAG_INIT_FAILED;
1138 }
1139
1140 return ERROR_OK;
1141 }
1142
1143 static int jtag_validate_chain(void)
1144 {
1145 jtag_tap_t *tap;
1146 int total_ir_length = 0;
1147 u8 *ir_test = NULL;
1148 scan_field_t field;
1149 int chain_pos = 0;
1150
1151 tap = NULL;
1152 total_ir_length = 0;
1153 for(;;){
1154 tap = jtag_tap_next_enabled(tap);
1155 if( tap == NULL ){
1156 break;
1157 }
1158 total_ir_length += tap->ir_length;
1159 }
1160
1161 total_ir_length += 2;
1162 ir_test = malloc(CEIL(total_ir_length, 8));
1163 buf_set_ones(ir_test, total_ir_length);
1164
1165 field.tap = NULL;
1166 field.num_bits = total_ir_length;
1167 field.out_value = ir_test;
1168 field.in_value = ir_test;
1169
1170
1171 jtag_add_plain_ir_scan(1, &field, TAP_RESET);
1172 jtag_execute_queue();
1173
1174 tap = NULL;
1175 chain_pos = 0;
1176 int val;
1177 for(;;){
1178 tap = jtag_tap_next_enabled(tap);
1179 if( tap == NULL ){
1180 break;
1181 }
1182
1183 val = buf_get_u32(ir_test, chain_pos, 2);
1184 if (val != 0x1)
1185 {
1186 char *cbuf = buf_to_str(ir_test, total_ir_length, 16);
1187 LOG_ERROR("Could not validate JTAG scan chain, IR mismatch, scan returned 0x%s. tap=%s pos=%d expected 0x1 got %0x", cbuf, jtag_tap_name(tap), chain_pos, val);
1188 free(cbuf);
1189 free(ir_test);
1190 return ERROR_JTAG_INIT_FAILED;
1191 }
1192 chain_pos += tap->ir_length;
1193 }
1194
1195 val = buf_get_u32(ir_test, chain_pos, 2);
1196 if (val != 0x3)
1197 {
1198 char *cbuf = buf_to_str(ir_test, total_ir_length, 16);
1199 LOG_ERROR("Could not validate end of JTAG scan chain, IR mismatch, scan returned 0x%s. pos=%d expected 0x3 got %0x", cbuf, chain_pos, val);
1200 free(cbuf);
1201 free(ir_test);
1202 return ERROR_JTAG_INIT_FAILED;
1203 }
1204
1205 free(ir_test);
1206
1207 return ERROR_OK;
1208 }
1209
1210 enum jtag_tap_cfg_param {
1211 JCFG_EVENT
1212 };
1213
1214 static Jim_Nvp nvp_config_opts[] = {
1215 { .name = "-event", .value = JCFG_EVENT },
1216
1217 { .name = NULL, .value = -1 }
1218 };
1219
1220 static int jtag_tap_configure_cmd( Jim_GetOptInfo *goi, jtag_tap_t * tap)
1221 {
1222 Jim_Nvp *n;
1223 Jim_Obj *o;
1224 int e;
1225
1226 /* parse config or cget options */
1227 while (goi->argc > 0) {
1228 Jim_SetEmptyResult (goi->interp);
1229
1230 e = Jim_GetOpt_Nvp(goi, nvp_config_opts, &n);
1231 if (e != JIM_OK) {
1232 Jim_GetOpt_NvpUnknown(goi, nvp_config_opts, 0);
1233 return e;
1234 }
1235
1236 switch (n->value) {
1237 case JCFG_EVENT:
1238 if (goi->argc == 0) {
1239 Jim_WrongNumArgs( goi->interp, goi->argc, goi->argv, "-event ?event-name? ..." );
1240 return JIM_ERR;
1241 }
1242
1243 e = Jim_GetOpt_Nvp( goi, nvp_jtag_tap_event, &n );
1244 if (e != JIM_OK) {
1245 Jim_GetOpt_NvpUnknown(goi, nvp_jtag_tap_event, 1);
1246 return e;
1247 }
1248
1249 if (goi->isconfigure) {
1250 if (goi->argc != 1) {
1251 Jim_WrongNumArgs(goi->interp, goi->argc, goi->argv, "-event ?event-name? ?EVENT-BODY?");
1252 return JIM_ERR;
1253 }
1254 } else {
1255 if (goi->argc != 0) {
1256 Jim_WrongNumArgs(goi->interp, goi->argc, goi->argv, "-event ?event-name?");
1257 return JIM_ERR;
1258 }
1259 }
1260
1261 {
1262 jtag_tap_event_action_t *jteap;
1263
1264 jteap = tap->event_action;
1265 /* replace existing? */
1266 while (jteap) {
1267 if (jteap->event == (enum jtag_tap_event)n->value) {
1268 break;
1269 }
1270 jteap = jteap->next;
1271 }
1272
1273 if (goi->isconfigure) {
1274 if (jteap == NULL) {
1275 /* create new */
1276 jteap = calloc(1, sizeof (*jteap));
1277 }
1278 jteap->event = n->value;
1279 Jim_GetOpt_Obj( goi, &o);
1280 if (jteap->body) {
1281 Jim_DecrRefCount(interp, jteap->body);
1282 }
1283 jteap->body = Jim_DuplicateObj(goi->interp, o);
1284 Jim_IncrRefCount(jteap->body);
1285
1286 /* add to head of event list */
1287 jteap->next = tap->event_action;
1288 tap->event_action = jteap;
1289 Jim_SetEmptyResult(goi->interp);
1290 } else {
1291 /* get */
1292 if (jteap == NULL) {
1293 Jim_SetEmptyResult(goi->interp);
1294 } else {
1295 Jim_SetResult(goi->interp, Jim_DuplicateObj(goi->interp, jteap->body));
1296 }
1297 }
1298 }
1299 /* loop for more */
1300 break;
1301 }
1302 } /* while (goi->argc) */
1303
1304 return JIM_OK;
1305 }
1306
1307
1308 static void jtag_tap_init(jtag_tap_t *tap)
1309 {
1310 assert(0 != tap->ir_length);
1311
1312 tap->expected = malloc(tap->ir_length);
1313 tap->expected_mask = malloc(tap->ir_length);
1314 tap->cur_instr = malloc(tap->ir_length);
1315
1316 buf_set_u32(tap->expected, 0, tap->ir_length, tap->ir_capture_value);
1317 buf_set_u32(tap->expected_mask, 0, tap->ir_length, tap->ir_capture_mask);
1318 buf_set_ones(tap->cur_instr, tap->ir_length);
1319
1320 // place TAP in bypass mode
1321 tap->bypass = 1;
1322 // register the reset callback for the TAP
1323 jtag_register_event_callback(&jtag_reset_callback, tap);
1324
1325 LOG_DEBUG("Created Tap: %s @ abs position %d, "
1326 "irlen %d, capture: 0x%x mask: 0x%x", tap->dotted_name,
1327 tap->abs_chain_position, tap->ir_length,
1328 tap->ir_capture_value, tap->ir_capture_mask);
1329 jtag_tap_add(tap);
1330 }
1331
1332 static void jtag_tap_free(jtag_tap_t *tap)
1333 {
1334 /// @todo is anything missing? no memory leaks please
1335 free((void *)tap->expected_ids);
1336 free((void *)tap->chip);
1337 free((void *)tap->tapname);
1338 free((void *)tap->dotted_name);
1339 free(tap);
1340 }
1341
1342 static int jim_newtap_cmd( Jim_GetOptInfo *goi )
1343 {
1344 jtag_tap_t *pTap;
1345 jim_wide w;
1346 int x;
1347 int e;
1348 int reqbits;
1349 Jim_Nvp *n;
1350 char *cp;
1351 const Jim_Nvp opts[] = {
1352 #define NTAP_OPT_IRLEN 0
1353 { .name = "-irlen" , .value = NTAP_OPT_IRLEN },
1354 #define NTAP_OPT_IRMASK 1
1355 { .name = "-irmask" , .value = NTAP_OPT_IRMASK },
1356 #define NTAP_OPT_IRCAPTURE 2
1357 { .name = "-ircapture" , .value = NTAP_OPT_IRCAPTURE },
1358 #define NTAP_OPT_ENABLED 3
1359 { .name = "-enable" , .value = NTAP_OPT_ENABLED },
1360 #define NTAP_OPT_DISABLED 4
1361 { .name = "-disable" , .value = NTAP_OPT_DISABLED },
1362 #define NTAP_OPT_EXPECTED_ID 5
1363 { .name = "-expected-id" , .value = NTAP_OPT_EXPECTED_ID },
1364 { .name = NULL , .value = -1 },
1365 };
1366
1367 pTap = malloc( sizeof(jtag_tap_t) );
1368 memset( pTap, 0, sizeof(*pTap) );
1369 if( !pTap ){
1370 Jim_SetResult_sprintf( goi->interp, "no memory");
1371 return JIM_ERR;
1372 }
1373 /*
1374 * we expect CHIP + TAP + OPTIONS
1375 * */
1376 if( goi->argc < 3 ){
1377 Jim_SetResult_sprintf(goi->interp, "Missing CHIP TAP OPTIONS ....");
1378 return JIM_ERR;
1379 }
1380 Jim_GetOpt_String( goi, &cp, NULL );
1381 pTap->chip = strdup(cp);
1382
1383 Jim_GetOpt_String( goi, &cp, NULL );
1384 pTap->tapname = strdup(cp);
1385
1386 /* name + dot + name + null */
1387 x = strlen(pTap->chip) + 1 + strlen(pTap->tapname) + 1;
1388 cp = malloc( x );
1389 sprintf( cp, "%s.%s", pTap->chip, pTap->tapname );
1390 pTap->dotted_name = cp;
1391
1392 LOG_DEBUG("Creating New Tap, Chip: %s, Tap: %s, Dotted: %s, %d params",
1393 pTap->chip, pTap->tapname, pTap->dotted_name, goi->argc);
1394
1395 /* default is enabled */
1396 pTap->enabled = 1;
1397
1398 /* deal with options */
1399 #define NTREQ_IRLEN 1
1400 #define NTREQ_IRCAPTURE 2
1401 #define NTREQ_IRMASK 4
1402
1403 /* clear them as we find them */
1404 reqbits = (NTREQ_IRLEN | NTREQ_IRCAPTURE | NTREQ_IRMASK);
1405
1406 while( goi->argc ){
1407 e = Jim_GetOpt_Nvp( goi, opts, &n );
1408 if( e != JIM_OK ){
1409 Jim_GetOpt_NvpUnknown( goi, opts, 0 );
1410 return e;
1411 }
1412 LOG_DEBUG("Processing option: %s", n->name );
1413 switch( n->value ){
1414 case NTAP_OPT_ENABLED:
1415 pTap->enabled = 1;
1416 break;
1417 case NTAP_OPT_DISABLED:
1418 pTap->enabled = 0;
1419 break;
1420 case NTAP_OPT_EXPECTED_ID:
1421 {
1422 u32 *new_expected_ids;
1423
1424 e = Jim_GetOpt_Wide( goi, &w );
1425 if( e != JIM_OK) {
1426 Jim_SetResult_sprintf(goi->interp, "option: %s bad parameter", n->name);
1427 return e;
1428 }
1429
1430 new_expected_ids = malloc(sizeof(u32) * (pTap->expected_ids_cnt + 1));
1431 if (new_expected_ids == NULL) {
1432 Jim_SetResult_sprintf( goi->interp, "no memory");
1433 return JIM_ERR;
1434 }
1435
1436 memcpy(new_expected_ids, pTap->expected_ids, sizeof(u32) * pTap->expected_ids_cnt);
1437
1438 new_expected_ids[pTap->expected_ids_cnt] = w;
1439
1440 free(pTap->expected_ids);
1441 pTap->expected_ids = new_expected_ids;
1442 pTap->expected_ids_cnt++;
1443 break;
1444 }
1445 case NTAP_OPT_IRLEN:
1446 case NTAP_OPT_IRMASK:
1447 case NTAP_OPT_IRCAPTURE:
1448 e = Jim_GetOpt_Wide( goi, &w );
1449 if( e != JIM_OK ){
1450 Jim_SetResult_sprintf( goi->interp, "option: %s bad parameter", n->name );
1451 return e;
1452 }
1453 if( (w < 0) || (w > 0xffff) ){
1454 /* wacky value */
1455 Jim_SetResult_sprintf( goi->interp, "option: %s - wacky value: %d (0x%x)",
1456 n->name, (int)(w), (int)(w));
1457 return JIM_ERR;
1458 }
1459 switch(n->value){
1460 case NTAP_OPT_IRLEN:
1461 pTap->ir_length = w;
1462 reqbits &= (~(NTREQ_IRLEN));
1463 break;
1464 case NTAP_OPT_IRMASK:
1465 pTap->ir_capture_mask = w;
1466 reqbits &= (~(NTREQ_IRMASK));
1467 break;
1468 case NTAP_OPT_IRCAPTURE:
1469 pTap->ir_capture_value = w;
1470 reqbits &= (~(NTREQ_IRCAPTURE));
1471 break;
1472 }
1473 } /* switch(n->value) */
1474 } /* while( goi->argc ) */
1475
1476 /* Did all the required option bits get cleared? */
1477 if (0 == reqbits)
1478 {
1479 jtag_tap_init(pTap);
1480 return ERROR_OK;
1481 }
1482
1483 Jim_SetResult_sprintf(goi->interp,
1484 "newtap: %s missing required parameters",
1485 pTap->dotted_name);
1486 jtag_tap_free(pTap);
1487 return JIM_ERR;
1488 }
1489
1490 static int jim_jtag_command( Jim_Interp *interp, int argc, Jim_Obj *const *argv )
1491 {
1492 Jim_GetOptInfo goi;
1493 int e;
1494 Jim_Nvp *n;
1495 Jim_Obj *o;
1496 struct command_context_s *context;
1497
1498 enum {
1499 JTAG_CMD_INTERFACE,
1500 JTAG_CMD_INIT_RESET,
1501 JTAG_CMD_NEWTAP,
1502 JTAG_CMD_TAPENABLE,
1503 JTAG_CMD_TAPDISABLE,
1504 JTAG_CMD_TAPISENABLED,
1505 JTAG_CMD_CONFIGURE,
1506 JTAG_CMD_CGET
1507 };
1508
1509 const Jim_Nvp jtag_cmds[] = {
1510 { .name = "interface" , .value = JTAG_CMD_INTERFACE },
1511 { .name = "arp_init-reset", .value = JTAG_CMD_INIT_RESET },
1512 { .name = "newtap" , .value = JTAG_CMD_NEWTAP },
1513 { .name = "tapisenabled" , .value = JTAG_CMD_TAPISENABLED },
1514 { .name = "tapenable" , .value = JTAG_CMD_TAPENABLE },
1515 { .name = "tapdisable" , .value = JTAG_CMD_TAPDISABLE },
1516 { .name = "configure" , .value = JTAG_CMD_CONFIGURE },
1517 { .name = "cget" , .value = JTAG_CMD_CGET },
1518
1519 { .name = NULL, .value = -1 },
1520 };
1521
1522 context = Jim_GetAssocData(interp, "context");
1523 /* go past the command */
1524 Jim_GetOpt_Setup( &goi, interp, argc-1, argv+1 );
1525
1526 e = Jim_GetOpt_Nvp( &goi, jtag_cmds, &n );
1527 if( e != JIM_OK ){
1528 Jim_GetOpt_NvpUnknown( &goi, jtag_cmds, 0 );
1529 return e;
1530 }
1531 Jim_SetEmptyResult( goi.interp );
1532 switch( n->value ){
1533 case JTAG_CMD_INTERFACE:
1534 /* return the name of the interface */
1535 /* TCL code might need to know the exact type... */
1536 /* FUTURE: we allow this as a means to "set" the interface. */
1537 if( goi.argc != 0 ){
1538 Jim_WrongNumArgs( goi.interp, 1, goi.argv-1, "(no params)");
1539 return JIM_ERR;
1540 }
1541 Jim_SetResultString( goi.interp, jtag_interface->name, -1 );
1542 return JIM_OK;
1543 case JTAG_CMD_INIT_RESET:
1544 if( goi.argc != 0 ){
1545 Jim_WrongNumArgs( goi.interp, 1, goi.argv-1, "(no params)");
1546 return JIM_ERR;
1547 }
1548 e = jtag_init_reset(context);
1549 if( e != ERROR_OK ){
1550 Jim_SetResult_sprintf( goi.interp, "error: %d", e);
1551 return JIM_ERR;
1552 }
1553 return JIM_OK;
1554 case JTAG_CMD_NEWTAP:
1555 return jim_newtap_cmd( &goi );
1556 break;
1557 case JTAG_CMD_TAPISENABLED:
1558 case JTAG_CMD_TAPENABLE:
1559 case JTAG_CMD_TAPDISABLE:
1560 if( goi.argc != 1 ){
1561 Jim_SetResultString( goi.interp, "Too many parameters",-1 );
1562 return JIM_ERR;
1563 }
1564
1565 {
1566 jtag_tap_t *t;
1567 t = jtag_tap_by_jim_obj( goi.interp, goi.argv[0] );
1568 if( t == NULL ){
1569 return JIM_ERR;
1570 }
1571 switch( n->value ){
1572 case JTAG_CMD_TAPISENABLED:
1573 e = t->enabled;
1574 break;
1575 case JTAG_CMD_TAPENABLE:
1576 jtag_tap_handle_event( t, JTAG_TAP_EVENT_ENABLE);
1577 e = 1;
1578 t->enabled = e;
1579 break;
1580 case JTAG_CMD_TAPDISABLE:
1581 jtag_tap_handle_event( t, JTAG_TAP_EVENT_DISABLE);
1582 e = 0;
1583 t->enabled = e;
1584 break;
1585 }
1586 Jim_SetResult( goi.interp, Jim_NewIntObj( goi.interp, e ) );
1587 return JIM_OK;
1588 }
1589 break;
1590
1591 case JTAG_CMD_CGET:
1592 if( goi.argc < 2 ){
1593 Jim_WrongNumArgs( goi.interp, 0, NULL, "?tap-name? -option ...");
1594 return JIM_ERR;
1595 }
1596
1597 {
1598 jtag_tap_t *t;
1599
1600 Jim_GetOpt_Obj(&goi, &o);
1601 t = jtag_tap_by_jim_obj( goi.interp, o );
1602 if( t == NULL ){
1603 return JIM_ERR;
1604 }
1605
1606 goi.isconfigure = 0;
1607 return jtag_tap_configure_cmd( &goi, t);
1608 }
1609 break;
1610
1611 case JTAG_CMD_CONFIGURE:
1612 if( goi.argc < 3 ){
1613 Jim_WrongNumArgs( goi.interp, 0, NULL, "?tap-name? -option ?VALUE? ...");
1614 return JIM_ERR;
1615 }
1616
1617 {
1618 jtag_tap_t *t;
1619
1620 Jim_GetOpt_Obj(&goi, &o);
1621 t = jtag_tap_by_jim_obj( goi.interp, o );
1622 if( t == NULL ){
1623 return JIM_ERR;
1624 }
1625
1626 goi.isconfigure = 1;
1627 return jtag_tap_configure_cmd( &goi, t);
1628 }
1629 }
1630
1631 return JIM_ERR;
1632 }
1633
1634 int jtag_register_commands(struct command_context_s *cmd_ctx)
1635 {
1636 register_jim( cmd_ctx, "jtag", jim_jtag_command, "perform jtag tap actions");
1637
1638 register_command(cmd_ctx, NULL, "interface", handle_interface_command,
1639 COMMAND_CONFIG, "try to configure interface");
1640 register_command(cmd_ctx, NULL, "jtag_speed", handle_jtag_speed_command,
1641 COMMAND_ANY, "(DEPRECATED) set jtag speed (if supported)");
1642 register_command(cmd_ctx, NULL, "jtag_khz", handle_jtag_khz_command,
1643 COMMAND_ANY, "set maximum jtag speed (if supported); "
1644 "parameter is maximum khz, or 0 for adaptive clocking (RTCK).");
1645 register_command(cmd_ctx, NULL, "jtag_device", handle_jtag_device_command,
1646 COMMAND_CONFIG, "(DEPRECATED) jtag_device <ir_length> <ir_expected> <ir_mask>");
1647 register_command(cmd_ctx, NULL, "reset_config", handle_reset_config_command,
1648 COMMAND_ANY,
1649 "[none/trst_only/srst_only/trst_and_srst] [srst_pulls_trst/trst_pulls_srst] [combined/separate] [trst_push_pull/trst_open_drain] [srst_push_pull/srst_open_drain]");
1650 register_command(cmd_ctx, NULL, "jtag_nsrst_delay", handle_jtag_nsrst_delay_command,
1651 COMMAND_ANY, "jtag_nsrst_delay <ms> - delay after deasserting srst in ms");
1652 register_command(cmd_ctx, NULL, "jtag_ntrst_delay", handle_jtag_ntrst_delay_command,
1653 COMMAND_ANY, "jtag_ntrst_delay <ms> - delay after deasserting trst in ms");
1654
1655 register_command(cmd_ctx, NULL, "scan_chain", handle_scan_chain_command,
1656 COMMAND_EXEC, "print current scan chain configuration");
1657
1658 register_command(cmd_ctx, NULL, "jtag_reset", handle_jtag_reset_command,
1659 COMMAND_EXEC, "toggle reset lines <trst> <srst>");
1660 register_command(cmd_ctx, NULL, "runtest", handle_runtest_command,
1661 COMMAND_EXEC, "move to Run-Test/Idle, and execute <num_cycles>");
1662 register_command(cmd_ctx, NULL, "irscan", handle_irscan_command,
1663 COMMAND_EXEC, "execute IR scan <device> <instr> [dev2] [instr2] ...");
1664 register_jim(cmd_ctx, "drscan", Jim_Command_drscan, "execute DR scan <device> <num_bits> <value> <num_bits1> <value2> ...");
1665 register_jim(cmd_ctx, "flush_count", Jim_Command_flush_count, "returns number of times the JTAG queue has been flushed");
1666
1667 register_command(cmd_ctx, NULL, "verify_ircapture", handle_verify_ircapture_command,
1668 COMMAND_ANY, "verify value captured during Capture-IR <enable|disable>");
1669 register_command(cmd_ctx, NULL, "verify_jtag", handle_verify_jtag_command,
1670 COMMAND_ANY, "verify value capture <enable|disable>");
1671 register_command(cmd_ctx, NULL, "tms_sequence", handle_tms_sequence_command,
1672 COMMAND_ANY, "choose short(default) or long tms_sequence <short|long>");
1673 return ERROR_OK;
1674 }
1675
1676 int jtag_interface_init(struct command_context_s *cmd_ctx)
1677 {
1678 if (jtag)
1679 return ERROR_OK;
1680
1681 if (!jtag_interface)
1682 {
1683 /* nothing was previously specified by "interface" command */
1684 LOG_ERROR("JTAG interface has to be specified, see \"interface\" command");
1685 return ERROR_JTAG_INVALID_INTERFACE;
1686 }
1687 if(hasKHz)
1688 {
1689 jtag_interface->khz(jtag_get_speed_khz(), &jtag_speed);
1690 hasKHz = false;
1691 }
1692
1693 if (jtag_interface->init() != ERROR_OK)
1694 return ERROR_JTAG_INIT_FAILED;
1695
1696 jtag = jtag_interface;
1697 return ERROR_OK;
1698 }
1699
1700 static int jtag_init_inner(struct command_context_s *cmd_ctx)
1701 {
1702 jtag_tap_t *tap;
1703 int retval;
1704
1705 LOG_DEBUG("Init JTAG chain");
1706
1707 tap = jtag_tap_next_enabled(NULL);
1708 if( tap == NULL ){
1709 LOG_ERROR("There are no enabled taps?");
1710 return ERROR_JTAG_INIT_FAILED;
1711 }
1712
1713 jtag_add_tlr();
1714 if ((retval=jtag_execute_queue())!=ERROR_OK)
1715 return retval;
1716
1717 /* examine chain first, as this could discover the real chain layout */
1718 if (jtag_examine_chain() != ERROR_OK)
1719 {
1720 LOG_ERROR("trying to validate configured JTAG chain anyway...");
1721 }
1722
1723 if (jtag_validate_chain() != ERROR_OK)
1724 {
1725 LOG_WARNING("Could not validate JTAG chain, continuing anyway...");
1726 }
1727
1728 return ERROR_OK;
1729 }
1730
1731 int jtag_interface_quit(void)
1732 {
1733 if (!jtag || !jtag->quit)
1734 return ERROR_OK;
1735
1736 // close the JTAG interface
1737 int result = jtag->quit();
1738 if (ERROR_OK != result)
1739 LOG_ERROR("failed: %d", result);
1740
1741 return ERROR_OK;
1742 }
1743
1744
1745 int jtag_init_reset(struct command_context_s *cmd_ctx)
1746 {
1747 int retval;
1748
1749 if ((retval=jtag_interface_init(cmd_ctx)) != ERROR_OK)
1750 return retval;
1751
1752 LOG_DEBUG("Trying to bring the JTAG controller to life by asserting TRST / RESET");
1753
1754 /* Reset can happen after a power cycle.
1755 *
1756 * Ideally we would only assert TRST or run RESET before the target reset.
1757 *
1758 * However w/srst_pulls_trst, trst is asserted together with the target
1759 * reset whether we want it or not.
1760 *
1761 * NB! Some targets have JTAG circuitry disabled until a
1762 * trst & srst has been asserted.
1763 *
1764 * NB! here we assume nsrst/ntrst delay are sufficient!
1765 *
1766 * NB! order matters!!!! srst *can* disconnect JTAG circuitry
1767 *
1768 */
1769 jtag_add_reset(1, 0); /* RESET or TRST */
1770 if (jtag_reset_config & RESET_HAS_SRST)
1771 {
1772 jtag_add_reset(1, 1);
1773 if ((jtag_reset_config & RESET_SRST_PULLS_TRST)==0)
1774 jtag_add_reset(0, 1);
1775 }
1776 jtag_add_reset(0, 0);
1777 if ((retval = jtag_execute_queue()) != ERROR_OK)
1778 return retval;
1779
1780 /* Check that we can communication on the JTAG chain + eventually we want to
1781 * be able to perform enumeration only after OpenOCD has started
1782 * telnet and GDB server
1783 *
1784 * That would allow users to more easily perform any magic they need to before
1785 * reset happens.
1786 */
1787 return jtag_init_inner(cmd_ctx);
1788 }
1789
1790 int jtag_init(struct command_context_s *cmd_ctx)
1791 {
1792 int retval;
1793 if ((retval=jtag_interface_init(cmd_ctx)) != ERROR_OK)
1794 return retval;
1795 if (jtag_init_inner(cmd_ctx)==ERROR_OK)
1796 {
1797 return ERROR_OK;
1798 }
1799 return jtag_init_reset(cmd_ctx);
1800 }
1801
1802 void jtag_set_speed_khz(unsigned khz)
1803 {
1804 speed_khz = khz;
1805 }
1806 unsigned jtag_get_speed_khz(void)
1807 {
1808 return speed_khz;
1809 }
1810
1811 static int default_khz(int khz, int *jtag_speed)
1812 {
1813 LOG_ERROR("Translation from khz to jtag_speed not implemented");
1814 return ERROR_FAIL;
1815 }
1816
1817 static int default_speed_div(int speed, int *khz)
1818 {
1819 LOG_ERROR("Translation from jtag_speed to khz not implemented");
1820 return ERROR_FAIL;
1821 }
1822
1823 static int default_power_dropout(int *dropout)
1824 {
1825 *dropout=0; /* by default we can't detect power dropout */
1826 return ERROR_OK;
1827 }
1828
1829 static int default_srst_asserted(int *srst_asserted)
1830 {
1831 *srst_asserted=0; /* by default we can't detect srst asserted */
1832 return ERROR_OK;
1833 }
1834
1835 static int handle_interface_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1836 {
1837 int i;
1838 int retval;
1839
1840 /* check whether the interface is already configured */
1841 if (jtag_interface)
1842 {
1843 LOG_WARNING("Interface already configured, ignoring");
1844 return ERROR_OK;
1845 }
1846
1847 /* interface name is a mandatory argument */
1848 if (argc < 1 || args[0][0] == '\0')
1849 {
1850 return ERROR_COMMAND_SYNTAX_ERROR;
1851 }
1852
1853 for (i=0; jtag_interfaces[i]; i++)
1854 {
1855 if (strcmp(args[0], jtag_interfaces[i]->name) == 0)
1856 {
1857 if ((retval = jtag_interfaces[i]->register_commands(cmd_ctx)) != ERROR_OK)
1858 {
1859 return retval;
1860 }
1861
1862 jtag_interface = jtag_interfaces[i];
1863
1864 if (jtag_interface->khz == NULL)
1865 {
1866 jtag_interface->khz = default_khz;
1867 }
1868 if (jtag_interface->speed_div == NULL)
1869 {
1870 jtag_interface->speed_div = default_speed_div;
1871 }
1872 if (jtag_interface->power_dropout == NULL)
1873 {
1874 jtag_interface->power_dropout = default_power_dropout;
1875 }
1876 if (jtag_interface->srst_asserted == NULL)
1877 {
1878 jtag_interface->srst_asserted = default_srst_asserted;
1879 }
1880
1881 return ERROR_OK;
1882 }
1883 }
1884
1885 /* no valid interface was found (i.e. the configuration option,
1886 * didn't match one of the compiled-in interfaces
1887 */
1888 LOG_ERROR("No valid jtag interface found (%s)", args[0]);
1889 LOG_ERROR("compiled-in jtag interfaces:");
1890 for (i = 0; jtag_interfaces[i]; i++)
1891 {
1892 LOG_ERROR("%i: %s", i, jtag_interfaces[i]->name);
1893 }
1894
1895 return ERROR_JTAG_INVALID_INTERFACE;
1896 }
1897
1898 static int handle_jtag_device_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1899 {
1900 int e;
1901 char buf[1024];
1902 Jim_Obj *newargs[ 10 ];
1903 /*
1904 * CONVERT SYNTAX
1905 * argv[-1] = command
1906 * argv[ 0] = ir length
1907 * argv[ 1] = ir capture
1908 * argv[ 2] = ir mask
1909 * argv[ 3] = not actually used by anything but in the docs
1910 */
1911
1912 if( argc < 4 ){
1913 command_print( cmd_ctx, "OLD DEPRECATED SYNTAX: Please use the NEW syntax");
1914 return ERROR_OK;
1915 }
1916 command_print( cmd_ctx, "OLD SYNTAX: DEPRECATED - translating to new syntax");
1917 command_print( cmd_ctx, "jtag newtap CHIP TAP -irlen %s -ircapture %s -irvalue %s",
1918 args[0],
1919 args[1],
1920 args[2] );
1921 command_print( cmd_ctx, "Example: STM32 has 2 taps, the cortexM3(len4) + boundaryscan(len5)");
1922 command_print( cmd_ctx, "jtag newtap stm32 cortexm3 ....., thus creating the tap: \"stm32.cortexm3\"");
1923 command_print( cmd_ctx, "jtag newtap stm32 boundary ....., and the tap: \"stm32.boundary\"");
1924 command_print( cmd_ctx, "And then refer to the taps by the dotted name.");
1925
1926 newargs[0] = Jim_NewStringObj( interp, "jtag", -1 );
1927 newargs[1] = Jim_NewStringObj( interp, "newtap", -1 );
1928 sprintf( buf, "chip%d", jtag_tap_count() );
1929 newargs[2] = Jim_NewStringObj( interp, buf, -1 );
1930 sprintf( buf, "tap%d", jtag_tap_count() );
1931 newargs[3] = Jim_NewStringObj( interp, buf, -1 );
1932 newargs[4] = Jim_NewStringObj( interp, "-irlen", -1 );
1933 newargs[5] = Jim_NewStringObj( interp, args[0], -1 );
1934 newargs[6] = Jim_NewStringObj( interp, "-ircapture", -1 );
1935 newargs[7] = Jim_NewStringObj( interp, args[1], -1 );
1936 newargs[8] = Jim_NewStringObj( interp, "-irmask", -1 );
1937 newargs[9] = Jim_NewStringObj( interp, args[2], -1 );
1938
1939 command_print( cmd_ctx, "NEW COMMAND:");
1940 sprintf( buf, "%s %s %s %s %s %s %s %s %s %s",
1941 Jim_GetString( newargs[0], NULL ),
1942 Jim_GetString( newargs[1], NULL ),
1943 Jim_GetString( newargs[2], NULL ),
1944 Jim_GetString( newargs[3], NULL ),
1945 Jim_GetString( newargs[4], NULL ),
1946 Jim_GetString( newargs[5], NULL ),
1947 Jim_GetString( newargs[6], NULL ),
1948 Jim_GetString( newargs[7], NULL ),
1949 Jim_GetString( newargs[8], NULL ),
1950 Jim_GetString( newargs[9], NULL ) );
1951
1952 e = jim_jtag_command( interp, 10, newargs );
1953 if( e != JIM_OK ){
1954 command_print( cmd_ctx, "%s", Jim_GetString( Jim_GetResult(interp), NULL ) );
1955 }
1956 return e;
1957 }
1958
1959 static int handle_scan_chain_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1960 {
1961 jtag_tap_t *tap;
1962
1963 tap = jtag_all_taps();
1964 command_print(cmd_ctx, " TapName | Enabled | IdCode Expected IrLen IrCap IrMask Instr ");
1965 command_print(cmd_ctx, "---|--------------------|---------|------------|------------|------|------|------|---------");
1966
1967 while( tap ){
1968 u32 expected, expected_mask, cur_instr, ii;
1969 expected = buf_get_u32(tap->expected, 0, tap->ir_length);
1970 expected_mask = buf_get_u32(tap->expected_mask, 0, tap->ir_length);
1971 cur_instr = buf_get_u32(tap->cur_instr, 0, tap->ir_length);
1972
1973 command_print(cmd_ctx,
1974 "%2d | %-18s | %c | 0x%08x | 0x%08x | 0x%02x | 0x%02x | 0x%02x | 0x%02x",
1975 tap->abs_chain_position,
1976 tap->dotted_name,
1977 tap->enabled ? 'Y' : 'n',
1978 tap->idcode,
1979 (tap->expected_ids_cnt > 0 ? tap->expected_ids[0] : 0),
1980 tap->ir_length,
1981 expected,
1982 expected_mask,
1983 cur_instr);
1984
1985 for (ii = 1; ii < tap->expected_ids_cnt; ii++) {
1986 command_print(cmd_ctx, " | | | | 0x%08x | | | | ",
1987 tap->expected_ids[ii]);
1988 }
1989
1990 tap = tap->next_tap;
1991 }
1992
1993 return ERROR_OK;
1994 }
1995
1996 static int handle_reset_config_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1997 {
1998 int new_cfg = 0;
1999 int mask = 0;
2000
2001 if (argc < 1)
2002 return ERROR_COMMAND_SYNTAX_ERROR;
2003
2004 /* Original versions cared about the order of these tokens:
2005 * reset_config signals [combination [trst_type [srst_type]]]
2006 * They also clobbered the previous configuration even on error.
2007 *
2008 * Here we don't care about the order, and only change values
2009 * which have been explicitly specified.
2010 */
2011 for (; argc; argc--, args++) {
2012 int tmp = 0;
2013 int m;
2014
2015 /* signals */
2016 m = RESET_HAS_TRST | RESET_HAS_SRST;
2017 if (strcmp(*args, "none") == 0)
2018 tmp = RESET_NONE;
2019 else if (strcmp(*args, "trst_only") == 0)
2020 tmp = RESET_HAS_TRST;
2021 else if (strcmp(*args, "srst_only") == 0)
2022 tmp = RESET_HAS_SRST;
2023 else if (strcmp(*args, "trst_and_srst") == 0)
2024 tmp = RESET_HAS_TRST | RESET_HAS_SRST;
2025 else
2026 m = 0;
2027 if (mask & m) {
2028 LOG_ERROR("extra reset_config %s spec (%s)",
2029 "signal", *args);
2030 return ERROR_INVALID_ARGUMENTS;
2031 }
2032 if (m)
2033 goto next;
2034
2035 /* combination (options for broken wiring) */
2036 m = RESET_SRST_PULLS_TRST | RESET_TRST_PULLS_SRST;
2037 if (strcmp(*args, "separate") == 0)
2038 /* separate reset lines - default */;
2039 else if (strcmp(*args, "srst_pulls_trst") == 0)
2040 tmp |= RESET_SRST_PULLS_TRST;
2041 else if (strcmp(*args, "trst_pulls_srst") == 0)
2042 tmp |= RESET_TRST_PULLS_SRST;
2043 else if (strcmp(*args, "combined") == 0)
2044 tmp |= RESET_SRST_PULLS_TRST | RESET_TRST_PULLS_SRST;
2045 else
2046 m = 0;
2047 if (mask & m) {
2048 LOG_ERROR("extra reset_config %s spec (%s)",
2049 "combination", *args);
2050 return ERROR_INVALID_ARGUMENTS;
2051 }
2052 if (m)
2053 goto next;
2054
2055 /* trst_type (NOP without HAS_TRST) */
2056 m = RESET_TRST_OPEN_DRAIN;
2057 if (strcmp(*args, "trst_open_drain") == 0)
2058 tmp |= RESET_TRST_OPEN_DRAIN;
2059 else if (strcmp(*args, "trst_push_pull") == 0)
2060 /* push/pull from adapter - default */;
2061 else
2062 m = 0;
2063 if (mask & m) {
2064 LOG_ERROR("extra reset_config %s spec (%s)",
2065 "trst_type", *args);
2066 return ERROR_INVALID_ARGUMENTS;
2067 }
2068 if (m)
2069 goto next;
2070
2071 /* srst_type (NOP without HAS_SRST) */
2072 m |= RESET_SRST_PUSH_PULL;
2073 if (strcmp(*args, "srst_push_pull") == 0)
2074 tmp |= RESET_SRST_PUSH_PULL;
2075 else if (strcmp(*args, "srst_open_drain") == 0)
2076 /* open drain from adapter - default */;
2077 else
2078 m = 0;
2079 if (mask & m) {
2080 LOG_ERROR("extra reset_config %s spec (%s)",
2081 "srst_type", *args);
2082 return ERROR_INVALID_ARGUMENTS;
2083 }
2084 if (m)
2085 goto next;
2086
2087 /* caller provided nonsense; fail */
2088 LOG_ERROR("unknown reset_config flag (%s)", *args);
2089 return ERROR_INVALID_ARGUMENTS;
2090
2091 next:
2092 /* Remember the bits which were specified (mask)
2093 * and their new values (new_cfg).
2094 */
2095 mask |= m;
2096 new_cfg |= tmp;
2097 }
2098
2099 /* clear previous values of those bits, save new values */
2100 jtag_reset_config &= ~mask;
2101 jtag_reset_config |= new_cfg;
2102
2103 return ERROR_OK;
2104 }
2105
2106 static int handle_jtag_nsrst_delay_command(struct command_context_s *cmd_ctx,
2107 char *cmd, char **args, int argc)
2108 {
2109 if (argc > 1)
2110 return ERROR_COMMAND_SYNTAX_ERROR;
2111 if (argc == 1)
2112 jtag_set_nsrst_delay(strtoul(args[0], NULL, 0));
2113 command_print(cmd_ctx, "jtag_nsrst_delay: %u", jtag_get_nsrst_delay());
2114 return ERROR_OK;
2115 }
2116
2117 static int handle_jtag_ntrst_delay_command(struct command_context_s *cmd_ctx,
2118 char *cmd, char **args, int argc)
2119 {
2120 if (argc > 1)
2121 return ERROR_COMMAND_SYNTAX_ERROR;
2122 if (argc == 1)
2123 jtag_set_ntrst_delay(strtoul(args[0], NULL, 0));
2124 command_print(cmd_ctx, "jtag_ntrst_delay: %u", jtag_get_ntrst_delay());
2125 return ERROR_OK;
2126 }
2127
2128 static int handle_jtag_speed_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2129 {
2130 int retval = ERROR_OK;
2131
2132 if (argc > 1)
2133 return ERROR_COMMAND_SYNTAX_ERROR;
2134 if (argc == 1)
2135 {
2136 LOG_DEBUG("handle jtag speed");
2137
2138 int cur_speed = 0;
2139 cur_speed = jtag_speed = strtoul(args[0], NULL, 0);
2140
2141 /* this command can be called during CONFIG,
2142 * in which case jtag isn't initialized */
2143 if (jtag)
2144 retval = jtag->speed(cur_speed);
2145 }
2146 command_print(cmd_ctx, "jtag_speed: %d", jtag_speed);
2147
2148 return retval;
2149 }
2150
2151 static int handle_jtag_khz_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2152 {
2153 if (argc > 1)
2154 return ERROR_COMMAND_SYNTAX_ERROR;
2155
2156 int retval = ERROR_OK;
2157 int cur_speed = 0;
2158 if (argc == 1)
2159 {
2160 LOG_DEBUG("handle jtag khz");
2161
2162 jtag_set_speed_khz(strtoul(args[0], NULL, 0));
2163 if (jtag != NULL)
2164 {
2165 LOG_DEBUG("have interface set up");
2166 int speed_div1;
2167 retval = jtag->khz(jtag_get_speed_khz(), &speed_div1);
2168 if (ERROR_OK != retval)
2169 {
2170 jtag_set_speed_khz(0);
2171 return retval;
2172 }
2173 cur_speed = jtag_speed = speed_div1;
2174
2175 retval = jtag->speed(cur_speed);
2176 }
2177 else
2178 hasKHz = true;
2179 }
2180
2181 cur_speed = jtag_get_speed_khz();
2182 if (jtag != NULL)
2183 {
2184 retval = jtag->speed_div(jtag_speed, &cur_speed);
2185 if (ERROR_OK != retval)
2186 return retval;
2187 }
2188
2189 if (cur_speed)
2190 command_print(cmd_ctx, "%d kHz", cur_speed);
2191 else
2192 command_print(cmd_ctx, "RCLK - adaptive");
2193 return retval;
2194
2195 }
2196
2197 static int handle_jtag_reset_command(struct command_context_s *cmd_ctx,
2198 char *cmd, char **args, int argc)
2199 {
2200 if (argc != 2)
2201 return ERROR_COMMAND_SYNTAX_ERROR;
2202
2203 int trst = -1;
2204 if (args[0][0] == '1')
2205 trst = 1;
2206 else if (args[0][0] == '0')
2207 trst = 0;
2208 else
2209 return ERROR_COMMAND_SYNTAX_ERROR;
2210
2211 int srst = -1;
2212 if (args[1][0] == '1')
2213 srst = 1;
2214 else if (args[1][0] == '0')
2215 srst = 0;
2216 else
2217 return ERROR_COMMAND_SYNTAX_ERROR;
2218
2219 if (jtag_interface_init(cmd_ctx) != ERROR_OK)
2220 return ERROR_JTAG_INIT_FAILED;
2221
2222 jtag_add_reset(trst, srst);
2223 jtag_execute_queue();
2224
2225 return ERROR_OK;
2226 }
2227
2228 static int handle_runtest_command(struct command_context_s *cmd_ctx,
2229 char *cmd, char **args, int argc)
2230 {
2231 if (argc != 1)
2232 return ERROR_COMMAND_SYNTAX_ERROR;
2233
2234 jtag_add_runtest(strtol(args[0], NULL, 0), jtag_get_end_state());
2235 jtag_execute_queue();
2236
2237 return ERROR_OK;
2238 }
2239
2240 /*
2241 * For "irscan" or "drscan" commands, the "end" (really, "next") state
2242 * should be stable ... and *NOT* a shift state, otherwise free-running
2243 * jtag clocks could change the values latched by the update state.
2244 */
2245 static bool scan_is_safe(tap_state_t state)
2246 {
2247 switch (state)
2248 {
2249 case TAP_RESET:
2250 case TAP_IDLE:
2251 case TAP_DRPAUSE:
2252 case TAP_IRPAUSE:
2253 return true;
2254 default:
2255 return false;
2256 }
2257 }
2258
2259
2260 static int handle_irscan_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2261 {
2262 int i;
2263 scan_field_t *fields;
2264 jtag_tap_t *tap;
2265 tap_state_t endstate;
2266
2267 if ((argc < 2) || (argc % 2))
2268 {
2269 return ERROR_COMMAND_SYNTAX_ERROR;
2270 }
2271
2272 /* optional "-endstate" "statename" at the end of the arguments,
2273 * so that e.g. IRPAUSE can let us load the data register before
2274 * entering RUN/IDLE to execute the instruction we load here.
2275 */
2276 endstate = TAP_IDLE;
2277
2278 if( argc >= 4 ){
2279 /* have at least one pair of numbers. */
2280 /* is last pair the magic text? */
2281 if( 0 == strcmp( "-endstate", args[ argc - 2 ] ) ){
2282 const char *cpA;
2283 const char *cpS;
2284 cpA = args[ argc-1 ];
2285 for( endstate = 0 ; endstate < TAP_NUM_STATES ; endstate++ ){
2286 cpS = tap_state_name( endstate );
2287 if( 0 == strcmp( cpA, cpS ) ){
2288 break;
2289 }
2290 }
2291 if( endstate >= TAP_NUM_STATES ){
2292 return ERROR_COMMAND_SYNTAX_ERROR;
2293 } else {
2294 if (!scan_is_safe(endstate))
2295 LOG_WARNING("irscan with unsafe "
2296 "endstate \"%s\"", cpA);
2297 /* found - remove the last 2 args */
2298 argc -= 2;
2299 }
2300 }
2301 }
2302
2303 int num_fields = argc / 2;
2304
2305 fields = malloc(sizeof(scan_field_t) * num_fields);
2306
2307 for (i = 0; i < num_fields; i++)
2308 {
2309 tap = jtag_tap_by_string( args[i*2] );
2310 if (tap==NULL)
2311 {
2312 command_print( cmd_ctx, "Tap: %s unknown", args[i*2] );
2313 return ERROR_FAIL;
2314 }
2315 int field_size = tap->ir_length;
2316 fields[i].tap = tap;
2317 fields[i].num_bits = field_size;
2318 fields[i].out_value = malloc(CEIL(field_size, 8));
2319 buf_set_u32(fields[i].out_value, 0, field_size, strtoul(args[i*2+1], NULL, 0));
2320 fields[i].in_value = NULL;
2321 }
2322
2323 /* did we have an endstate? */
2324 jtag_add_ir_scan(num_fields, fields, endstate);
2325
2326 int retval=jtag_execute_queue();
2327
2328 for (i = 0; i < num_fields; i++)
2329 free(fields[i].out_value);
2330
2331 free (fields);
2332
2333 return retval;
2334 }
2335
2336 static int Jim_Command_drscan(Jim_Interp *interp, int argc, Jim_Obj *const *args)
2337 {
2338 int retval;
2339 scan_field_t *fields;
2340 int num_fields;
2341 int field_count = 0;
2342 int i, e;
2343 jtag_tap_t *tap;
2344 tap_state_t endstate;
2345
2346 /* args[1] = device
2347 * args[2] = num_bits
2348 * args[3] = hex string
2349 * ... repeat num bits and hex string ...
2350 *
2351 * .. optionally:
2352 * args[N-2] = "-endstate"
2353 * args[N-1] = statename
2354 */
2355 if ((argc < 4) || ((argc % 2)!=0))
2356 {
2357 Jim_WrongNumArgs(interp, 1, args, "wrong arguments");
2358 return JIM_ERR;
2359 }
2360
2361 endstate = TAP_IDLE;
2362
2363 /* validate arguments as numbers */
2364 e = JIM_OK;
2365 for (i = 2; i < argc; i+=2)
2366 {
2367 long bits;
2368 const char *cp;
2369
2370 e = Jim_GetLong(interp, args[i], &bits);
2371 /* If valid - try next arg */
2372 if( e == JIM_OK ){
2373 continue;
2374 }
2375
2376 /* Not valid.. are we at the end? */
2377 if ( ((i+2) != argc) ){
2378 /* nope, then error */
2379 return e;
2380 }
2381
2382 /* it could be: "-endstate FOO"
2383 * e.g. DRPAUSE so we can issue more instructions
2384 * before entering RUN/IDLE and executing them.
2385 */
2386
2387 /* get arg as a string. */
2388 cp = Jim_GetString( args[i], NULL );
2389 /* is it the magic? */
2390 if( 0 == strcmp( "-endstate", cp ) ){
2391 /* is the statename valid? */
2392 cp = Jim_GetString( args[i+1], NULL );
2393
2394 /* see if it is a valid state name */
2395 endstate = tap_state_by_name(cp);
2396 if( endstate < 0 ){
2397 /* update the error message */
2398 Jim_SetResult_sprintf(interp,"endstate: %s invalid", cp );
2399 } else {
2400 if (!scan_is_safe(endstate))
2401 LOG_WARNING("drscan with unsafe "
2402 "endstate \"%s\"", cp);
2403
2404 /* valid - so clear the error */
2405 e = JIM_OK;
2406 /* and remove the last 2 args */
2407 argc -= 2;
2408 }
2409 }
2410
2411 /* Still an error? */
2412 if( e != JIM_OK ){
2413 return e; /* too bad */
2414 }
2415 } /* validate args */
2416
2417 tap = jtag_tap_by_jim_obj( interp, args[1] );
2418 if( tap == NULL ){
2419 return JIM_ERR;
2420 }
2421
2422 num_fields=(argc-2)/2;
2423 fields = malloc(sizeof(scan_field_t) * num_fields);
2424 for (i = 2; i < argc; i+=2)
2425 {
2426 long bits;
2427 int len;
2428 const char *str;
2429
2430 Jim_GetLong(interp, args[i], &bits);
2431 str = Jim_GetString(args[i+1], &len);
2432
2433 fields[field_count].tap = tap;
2434 fields[field_count].num_bits = bits;
2435 fields[field_count].out_value = malloc(CEIL(bits, 8));
2436 str_to_buf(str, len, fields[field_count].out_value, bits, 0);
2437 fields[field_count].in_value = fields[field_count].out_value;
2438 field_count++;
2439 }
2440
2441 jtag_add_dr_scan(num_fields, fields, endstate);
2442
2443 retval = jtag_execute_queue();
2444 if (retval != ERROR_OK)
2445 {
2446 Jim_SetResultString(interp, "drscan: jtag execute failed",-1);
2447 return JIM_ERR;
2448 }
2449
2450 field_count=0;
2451 Jim_Obj *list = Jim_NewListObj(interp, NULL, 0);
2452 for (i = 2; i < argc; i+=2)
2453 {
2454 long bits;
2455 char *str;
2456
2457 Jim_GetLong(interp, args[i], &bits);
2458 str = buf_to_str(fields[field_count].in_value, bits, 16);
2459 free(fields[field_count].out_value);
2460
2461 Jim_ListAppendElement(interp, list, Jim_NewStringObj(interp, str, strlen(str)));
2462 free(str);
2463 field_count++;
2464 }
2465
2466 Jim_SetResult(interp, list);
2467
2468 free(fields);
2469
2470 return JIM_OK;
2471 }
2472
2473
2474 static int Jim_Command_flush_count(Jim_Interp *interp, int argc, Jim_Obj *const *args)
2475 {
2476 Jim_SetResult(interp, Jim_NewIntObj(interp, jtag_get_flush_queue_count()));
2477
2478 return JIM_OK;
2479 }
2480
2481
2482 static int handle_verify_ircapture_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2483 {
2484 if (argc == 1)
2485 {
2486 if (strcmp(args[0], "enable") == 0)
2487 {
2488 jtag_verify_capture_ir = 1;
2489 }
2490 else if (strcmp(args[0], "disable") == 0)
2491 {
2492 jtag_verify_capture_ir = 0;
2493 } else
2494 {
2495 return ERROR_COMMAND_SYNTAX_ERROR;
2496 }
2497 } else if (argc != 0)
2498 {
2499 return ERROR_COMMAND_SYNTAX_ERROR;
2500 }
2501
2502 command_print(cmd_ctx, "verify Capture-IR is %s", (jtag_verify_capture_ir) ? "enabled": "disabled");
2503
2504 return ERROR_OK;
2505 }
2506
2507 void jtag_set_verify(bool enable)
2508 {
2509 jtag_verify = enable;
2510 }
2511
2512 bool jtag_will_verify()
2513 {
2514 return jtag_verify;
2515 }
2516
2517 static int handle_verify_jtag_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2518 {
2519 if (argc > 1)
2520 return ERROR_COMMAND_SYNTAX_ERROR;
2521
2522 if (argc == 1)
2523 {
2524 if (strcmp(args[0], "enable") == 0)
2525 jtag_set_verify(true);
2526 else if (strcmp(args[0], "disable") == 0)
2527 jtag_set_verify(false);
2528 else
2529 return ERROR_COMMAND_SYNTAX_ERROR;
2530 }
2531
2532 const char *status = jtag_will_verify() ? "enabled": "disabled";
2533 command_print(cmd_ctx, "verify jtag capture is %s", status);
2534
2535 return ERROR_OK;
2536 }
2537
2538
2539 int jtag_power_dropout(int *dropout)
2540 {
2541 return jtag->power_dropout(dropout);
2542 }
2543
2544 int jtag_srst_asserted(int *srst_asserted)
2545 {
2546 return jtag->srst_asserted(srst_asserted);
2547 }
2548
2549 void jtag_tap_handle_event( jtag_tap_t * tap, enum jtag_tap_event e)
2550 {
2551 jtag_tap_event_action_t * jteap;
2552 int done;
2553
2554 jteap = tap->event_action;
2555
2556 done = 0;
2557 while (jteap) {
2558 if (jteap->event == e) {
2559 done = 1;
2560 LOG_DEBUG( "JTAG tap: %s event: %d (%s) action: %s\n",
2561 tap->dotted_name,
2562 e,
2563 Jim_Nvp_value2name_simple(nvp_jtag_tap_event, e)->name,
2564 Jim_GetString(jteap->body, NULL) );
2565 if (Jim_EvalObj(interp, jteap->body) != JIM_OK) {
2566 Jim_PrintErrorMessage(interp);
2567 }
2568 }
2569
2570 jteap = jteap->next;
2571 }
2572
2573 if (!done) {
2574 LOG_DEBUG( "event %d %s - no action",
2575 e,
2576 Jim_Nvp_value2name_simple( nvp_jtag_tap_event, e)->name);
2577 }
2578 }
2579
2580 static int handle_tms_sequence_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2581 {
2582 if (argc > 1)
2583 return ERROR_COMMAND_SYNTAX_ERROR;
2584
2585 if (argc == 1)
2586 {
2587 bool use_new_table;
2588 if (strcmp(args[0], "short") == 0)
2589 use_new_table = true;
2590 else if (strcmp(args[0], "long") == 0)
2591 use_new_table = false;
2592 else
2593 return ERROR_COMMAND_SYNTAX_ERROR;
2594
2595 tap_use_new_tms_table(use_new_table);
2596 }
2597
2598 command_print(cmd_ctx, "tms sequence is %s",
2599 tap_uses_new_tms_table() ? "short": "long");
2600
2601 return ERROR_OK;
2602 }
2603
2604 /**
2605 * Function jtag_add_statemove
2606 * moves from the current state to the goal \a state. This needs
2607 * to be handled according to the xsvf spec, see the XSTATE command
2608 * description.
2609 */
2610 int jtag_add_statemove(tap_state_t goal_state)
2611 {
2612 int retval = ERROR_OK;
2613
2614 tap_state_t moves[8];
2615 tap_state_t cur_state = cmd_queue_cur_state;
2616 int i;
2617 int tms_bits;
2618 int tms_count;
2619
2620 LOG_DEBUG( "cur_state=%s goal_state=%s",
2621 tap_state_name(cur_state),
2622 tap_state_name(goal_state) );
2623
2624
2625 /* From the XSVF spec, pertaining to XSTATE:
2626
2627 For special states known as stable states (Test-Logic-Reset,
2628 Run-Test/Idle, Pause-DR, Pause- IR), an XSVF interpreter follows
2629 predefined TAP state paths when the starting state is a stable state and
2630 when the XSTATE specifies a new stable state (see the STATE command in
2631 the [Ref 5] for the TAP state paths between stable states). For
2632 non-stable states, XSTATE should specify a state that is only one TAP
2633 state transition distance from the current TAP state to avoid undefined
2634 TAP state paths. A sequence of multiple XSTATE commands can be issued to
2635 transition the TAP through a specific state path.
2636 */
2637
2638 if (goal_state==cur_state )
2639 ; /* nothing to do */
2640
2641 else if( goal_state==TAP_RESET )
2642 {
2643 jtag_add_tlr();
2644 }
2645
2646 else if( tap_is_state_stable(cur_state) && tap_is_state_stable(goal_state) )
2647 {
2648 /* note: unless tms_bits holds a path that agrees with [Ref 5] in above
2649 spec, then this code is not fully conformant to the xsvf spec. This
2650 puts a burden on tap_get_tms_path() function from the xsvf spec.
2651 If in doubt, you should confirm that that burden is being met.
2652 */
2653
2654 tms_bits = tap_get_tms_path(cur_state, goal_state);
2655 tms_count = tap_get_tms_path_len(cur_state, goal_state);
2656
2657 assert( (unsigned) tms_count < DIM(moves) );
2658
2659 for (i=0; i<tms_count; i++, tms_bits>>=1)
2660 {
2661 bool bit = tms_bits & 1;
2662
2663 cur_state = tap_state_transition(cur_state, bit);
2664 moves[i] = cur_state;
2665 }
2666
2667 jtag_add_pathmove(tms_count, moves);
2668 }
2669
2670 /* else state must be immediately reachable in one clock cycle, and does not
2671 need to be a stable state.
2672 */
2673 else if( tap_state_transition(cur_state, true) == goal_state
2674 || tap_state_transition(cur_state, false) == goal_state )
2675 {
2676 /* move a single state */
2677 moves[0] = goal_state;
2678 jtag_add_pathmove( 1, moves );
2679 }
2680
2681 else
2682 {
2683 retval = ERROR_FAIL;
2684 }
2685
2686 return retval;
2687 }
2688
2689 void jtag_set_nsrst_delay(unsigned delay)
2690 {
2691 jtag_nsrst_delay = delay;
2692 }
2693 unsigned jtag_get_nsrst_delay(void)
2694 {
2695 return jtag_nsrst_delay;
2696 }
2697 void jtag_set_ntrst_delay(unsigned delay)
2698 {
2699 jtag_ntrst_delay = delay;
2700 }
2701 unsigned jtag_get_ntrst_delay(void)
2702 {
2703 return jtag_ntrst_delay;
2704 }
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