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