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d94bebe13e9670af1cd146b1a634546377d79670
[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 #endif
101
102 #if BUILD_PARPORT == 1
103 extern jtag_interface_t parport_interface;
104 #endif
105
106 #if BUILD_DUMMY == 1
107 extern jtag_interface_t dummy_interface;
108 #endif
109
110 #if BUILD_FT2232_FTD2XX == 1
111 extern jtag_interface_t ft2232_interface;
112 #endif
113
114 #if BUILD_FT2232_LIBFTDI == 1
115 extern jtag_interface_t ft2232_interface;
116 #endif
117
118 #if BUILD_AMTJTAGACCEL == 1
119 extern jtag_interface_t amt_jtagaccel_interface;
120 #endif
121
122 #if BUILD_EP93XX == 1
123 extern jtag_interface_t ep93xx_interface;
124 #endif
125
126 #if BUILD_AT91RM9200 == 1
127 extern jtag_interface_t at91rm9200_interface;
128 #endif
129
130 #if BUILD_GW16012 == 1
131 extern jtag_interface_t gw16012_interface;
132 #endif
133
134 #if BUILD_PRESTO_LIBFTDI == 1 || BUILD_PRESTO_FTD2XX == 1
135 extern jtag_interface_t presto_interface;
136 #endif
137
138 #if BUILD_USBPROG == 1
139 extern jtag_interface_t usbprog_interface;
140 #endif
141
142 #if BUILD_JLINK == 1
143 extern jtag_interface_t jlink_interface;
144 #endif
145
146 #if BUILD_VSLLINK == 1
147 extern jtag_interface_t vsllink_interface;
148 #endif
149
150 #if BUILD_RLINK == 1
151 extern jtag_interface_t rlink_interface;
152 #endif
153
154 #if BUILD_ARMJTAGEW == 1
155 extern jtag_interface_t armjtagew_interface;
156 #endif
157
158 jtag_interface_t *jtag_interfaces[] = {
159 #if BUILD_ECOSBOARD == 1
160 &zy1000_interface,
161 #endif
162 #if BUILD_PARPORT == 1
163 &parport_interface,
164 #endif
165 #if BUILD_DUMMY == 1
166 &dummy_interface,
167 #endif
168 #if BUILD_FT2232_FTD2XX == 1
169 &ft2232_interface,
170 #endif
171 #if BUILD_FT2232_LIBFTDI == 1
172 &ft2232_interface,
173 #endif
174 #if BUILD_AMTJTAGACCEL == 1
175 &amt_jtagaccel_interface,
176 #endif
177 #if BUILD_EP93XX == 1
178 &ep93xx_interface,
179 #endif
180 #if BUILD_AT91RM9200 == 1
181 &at91rm9200_interface,
182 #endif
183 #if BUILD_GW16012 == 1
184 &gw16012_interface,
185 #endif
186 #if BUILD_PRESTO_LIBFTDI == 1 || BUILD_PRESTO_FTD2XX == 1
187 &presto_interface,
188 #endif
189 #if BUILD_USBPROG == 1
190 &usbprog_interface,
191 #endif
192 #if BUILD_JLINK == 1
193 &jlink_interface,
194 #endif
195 #if BUILD_VSLLINK == 1
196 &vsllink_interface,
197 #endif
198 #if BUILD_RLINK == 1
199 &rlink_interface,
200 #endif
201 #if BUILD_ARMJTAGEW == 1
202 &armjtagew_interface,
203 #endif
204 NULL,
205 };
206
207 struct jtag_interface_s *jtag = NULL;
208
209 /* configuration */
210 static jtag_interface_t *jtag_interface = NULL;
211 int jtag_speed = 0;
212
213 /* jtag commands */
214 static int handle_interface_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
215 static int handle_jtag_speed_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
216 static int handle_jtag_khz_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
217 static int handle_jtag_device_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
218 static int handle_reset_config_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
219 static int handle_jtag_nsrst_delay_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
220 static int handle_jtag_ntrst_delay_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
221
222 static int handle_scan_chain_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
223
224 static int handle_endstate_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
225 static int handle_jtag_reset_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
226 static int handle_runtest_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
227 static int handle_irscan_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
228 static int Jim_Command_drscan(Jim_Interp *interp, int argc, Jim_Obj *const *argv);
229 static int Jim_Command_flush_count(Jim_Interp *interp, int argc, Jim_Obj *const *args);
230
231 static int handle_verify_ircapture_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
232 static int handle_verify_jtag_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
233 static int handle_tms_sequence_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
234
235 jtag_tap_t *jtag_all_taps(void)
236 {
237 return __jtag_all_taps;
238 };
239
240 int jtag_tap_count(void)
241 {
242 return jtag_num_taps;
243 }
244
245 int jtag_tap_count_enabled(void)
246 {
247 jtag_tap_t *t;
248 int n;
249
250 n = 0;
251 t = jtag_all_taps();
252 while(t){
253 if( t->enabled ){
254 n++;
255 }
256 t = t->next_tap;
257 }
258 return n;
259 }
260
261 /// Append a new TAP to the chain of all taps.
262 static void jtag_tap_add(struct jtag_tap_s *t)
263 {
264 t->abs_chain_position = jtag_num_taps++;
265
266 jtag_tap_t **tap = &__jtag_all_taps;
267 while(*tap != NULL)
268 tap = &(*tap)->next_tap;
269 *tap = t;
270 }
271
272 jtag_tap_t *jtag_tap_by_string( const char *s )
273 {
274 jtag_tap_t *t;
275 char *cp;
276
277 t = jtag_all_taps();
278 /* try name first */
279 while(t){
280 if( 0 == strcmp( t->dotted_name, s ) ){
281 break;
282 } else {
283 t = t->next_tap;
284 }
285 }
286 /* backup plan is by number */
287 if( t == NULL ){
288 /* ok - is "s" a number? */
289 int n;
290 n = strtol( s, &cp, 0 );
291 if( (s != cp) && (*cp == 0) ){
292 /* Then it is... */
293 t = jtag_tap_by_abs_position(n);
294 }
295 }
296 return t;
297 }
298
299 jtag_tap_t * jtag_tap_by_jim_obj( Jim_Interp *interp, Jim_Obj *o )
300 {
301 jtag_tap_t *t;
302 const char *cp;
303
304 cp = Jim_GetString( o, NULL );
305 if(cp == NULL){
306 cp = "(unknown)";
307 t = NULL;
308 } else {
309 t = jtag_tap_by_string( cp );
310 }
311 if( t == NULL ){
312 Jim_SetResult_sprintf(interp,"Tap: %s is unknown", cp );
313 }
314 return t;
315 }
316
317 /* returns a pointer to the n-th device in the scan chain */
318 jtag_tap_t * jtag_tap_by_abs_position( int n )
319 {
320 int orig_n;
321 jtag_tap_t *t;
322
323 orig_n = n;
324 t = jtag_all_taps();
325
326 while( t && (n > 0)) {
327 n--;
328 t = t->next_tap;
329 }
330 return t;
331 }
332
333 const char *jtag_tap_name(const jtag_tap_t *tap)
334 {
335 return (tap == NULL) ? "(unknown)" : tap->dotted_name;
336 }
337
338
339 int jtag_register_event_callback(int (*callback)(enum jtag_event event, void *priv), void *priv)
340 {
341 jtag_event_callback_t **callbacks_p = &jtag_event_callbacks;
342
343 if (callback == NULL)
344 {
345 return ERROR_INVALID_ARGUMENTS;
346 }
347
348 if (*callbacks_p)
349 {
350 while ((*callbacks_p)->next)
351 callbacks_p = &((*callbacks_p)->next);
352 callbacks_p = &((*callbacks_p)->next);
353 }
354
355 (*callbacks_p) = malloc(sizeof(jtag_event_callback_t));
356 (*callbacks_p)->callback = callback;
357 (*callbacks_p)->priv = priv;
358 (*callbacks_p)->next = NULL;
359
360 return ERROR_OK;
361 }
362
363 int jtag_unregister_event_callback(int (*callback)(enum jtag_event event, void *priv))
364 {
365 jtag_event_callback_t **callbacks_p = &jtag_event_callbacks;
366
367 if (callback == NULL)
368 {
369 return ERROR_INVALID_ARGUMENTS;
370 }
371
372 while (*callbacks_p)
373 {
374 jtag_event_callback_t **next = &((*callbacks_p)->next);
375 if ((*callbacks_p)->callback == callback)
376 {
377 free(*callbacks_p);
378 *callbacks_p = *next;
379 }
380 callbacks_p = next;
381 }
382
383 return ERROR_OK;
384 }
385
386 int jtag_call_event_callbacks(enum jtag_event event)
387 {
388 jtag_event_callback_t *callback = jtag_event_callbacks;
389
390 LOG_DEBUG("jtag event: %s", jtag_event_strings[event]);
391
392 while (callback)
393 {
394 callback->callback(event, callback->priv);
395 callback = callback->next;
396 }
397
398 return ERROR_OK;
399 }
400
401 static void jtag_checks(void)
402 {
403 assert(jtag_trst == 0);
404 }
405
406 static void jtag_prelude(tap_state_t state)
407 {
408 jtag_checks();
409
410 assert(state!=TAP_INVALID);
411
412 cmd_queue_cur_state = state;
413 }
414
415 void jtag_alloc_in_value32(scan_field_t *field)
416 {
417 interface_jtag_alloc_in_value32(field);
418 }
419
420 void jtag_add_ir_scan_noverify(int in_num_fields, const scan_field_t *in_fields, tap_state_t state)
421 {
422 int retval;
423 jtag_prelude(state);
424
425 retval=interface_jtag_add_ir_scan(in_num_fields, in_fields, state);
426 if (retval!=ERROR_OK)
427 jtag_error=retval;
428
429 }
430
431
432 /**
433 * Generate an IR SCAN with a list of scan fields with one entry for each enabled TAP.
434 *
435 * If the input field list contains an instruction value for a TAP then that is used
436 * otherwise the TAP is set to bypass.
437 *
438 * TAPs for which no fields are passed are marked as bypassed for subsequent DR SCANs.
439 *
440 */
441 void jtag_add_ir_scan(int in_num_fields, scan_field_t *in_fields, tap_state_t state)
442 {
443 if (jtag_verify&&jtag_verify_capture_ir)
444 {
445 /* 8 x 32 bit id's is enough for all invocations */
446
447 for (int j = 0; j < in_num_fields; j++)
448 {
449 /* if we are to run a verification of the ir scan, we need to get the input back.
450 * We may have to allocate space if the caller didn't ask for the input back.
451 */
452 in_fields[j].check_value=in_fields[j].tap->expected;
453 in_fields[j].check_mask=in_fields[j].tap->expected_mask;
454 }
455 jtag_add_scan_check(jtag_add_ir_scan_noverify, in_num_fields, in_fields, state);
456 } else
457 {
458 jtag_add_ir_scan_noverify(in_num_fields, in_fields, state);
459 }
460 }
461
462 /**
463 * Duplicate the scan fields passed into the function into an IR SCAN command
464 *
465 * This function assumes that the caller handles extra fields for bypassed TAPs
466 *
467 */
468 void jtag_add_plain_ir_scan(int in_num_fields, const scan_field_t *in_fields, tap_state_t state)
469 {
470 int retval;
471
472 jtag_prelude(state);
473
474 retval=interface_jtag_add_plain_ir_scan(in_num_fields, in_fields, state);
475 if (retval!=ERROR_OK)
476 jtag_error=retval;
477 }
478
479 void jtag_add_callback(jtag_callback1_t f, u8 *in)
480 {
481 interface_jtag_add_callback(f, in);
482 }
483
484 void jtag_add_callback4(jtag_callback_t f, u8 *in,
485 jtag_callback_data_t data1, jtag_callback_data_t data2,
486 jtag_callback_data_t data3)
487 {
488 interface_jtag_add_callback4(f, in, data1, data2, data3);
489 }
490
491 int jtag_check_value_inner(u8 *captured, u8 *in_check_value, u8 *in_check_mask, int num_bits);
492
493 static int jtag_check_value_mask_callback(u8 *in, jtag_callback_data_t data1, jtag_callback_data_t data2, jtag_callback_data_t data3)
494 {
495 return jtag_check_value_inner(in, (u8 *)data1, (u8 *)data2, (int)data3);
496 }
497
498 static void jtag_add_scan_check(void (*jtag_add_scan)(int in_num_fields, const scan_field_t *in_fields, tap_state_t state),
499 int in_num_fields, scan_field_t *in_fields, tap_state_t state)
500 {
501 for (int i = 0; i < in_num_fields; i++)
502 {
503 struct scan_field_s *field = &in_fields[i];
504 field->allocated = 0;
505 field->modified = 0;
506 if (field->check_value || field->in_value)
507 continue;
508 interface_jtag_add_scan_check_alloc(field);
509 field->modified = 1;
510 }
511
512 jtag_add_scan(in_num_fields, in_fields, state);
513
514 for (int i = 0; i < in_num_fields; i++)
515 {
516 if ((in_fields[i].check_value != NULL) && (in_fields[i].in_value != NULL))
517 {
518 /* this is synchronous for a minidriver */
519 jtag_add_callback4(jtag_check_value_mask_callback, in_fields[i].in_value,
520 (jtag_callback_data_t)in_fields[i].check_value,
521 (jtag_callback_data_t)in_fields[i].check_mask,
522 (jtag_callback_data_t)in_fields[i].num_bits);
523 }
524 if (in_fields[i].allocated)
525 {
526 free(in_fields[i].in_value);
527 }
528 if (in_fields[i].modified)
529 {
530 in_fields[i].in_value = NULL;
531 }
532 }
533 }
534
535 void jtag_add_dr_scan_check(int in_num_fields, scan_field_t *in_fields, tap_state_t state)
536 {
537 if (jtag_verify)
538 {
539 jtag_add_scan_check(jtag_add_dr_scan, in_num_fields, in_fields, state);
540 } else
541 {
542 jtag_add_dr_scan(in_num_fields, in_fields, state);
543 }
544 }
545
546
547 /**
548 * Generate a DR SCAN using the fields passed to the function
549 *
550 * For not bypassed TAPs the function checks in_fields and uses fields specified there.
551 * For bypassed TAPs the function generates a dummy 1bit field.
552 *
553 * The bypass status of TAPs is set by jtag_add_ir_scan().
554 *
555 */
556 void jtag_add_dr_scan(int in_num_fields, const scan_field_t *in_fields, tap_state_t state)
557 {
558 int retval;
559
560 jtag_prelude(state);
561
562 retval=interface_jtag_add_dr_scan(in_num_fields, in_fields, state);
563 if (retval!=ERROR_OK)
564 jtag_error=retval;
565 }
566
567
568
569 /**
570 * Duplicate the scan fields passed into the function into a DR SCAN command
571 *
572 * This function assumes that the caller handles extra fields for bypassed TAPs
573 *
574 */
575 void jtag_add_plain_dr_scan(int in_num_fields, const scan_field_t *in_fields, tap_state_t state)
576 {
577 int retval;
578
579 jtag_prelude(state);
580
581 retval=interface_jtag_add_plain_dr_scan(in_num_fields, in_fields, state);
582 if (retval!=ERROR_OK)
583 jtag_error=retval;
584 }
585
586 void jtag_add_dr_out(jtag_tap_t* tap,
587 int num_fields, const int* num_bits, const u32* value,
588 tap_state_t end_state)
589 {
590 assert(end_state != TAP_INVALID);
591
592 cmd_queue_cur_state = end_state;
593
594 interface_jtag_add_dr_out(tap,
595 num_fields, num_bits, value,
596 end_state);
597 }
598
599 void jtag_add_tlr(void)
600 {
601 jtag_prelude(TAP_RESET);
602
603 int retval;
604 retval=interface_jtag_add_tlr();
605 if (retval!=ERROR_OK)
606 jtag_error=retval;
607
608 jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
609 }
610
611 void jtag_add_pathmove(int num_states, const tap_state_t *path)
612 {
613 tap_state_t cur_state = cmd_queue_cur_state;
614 int i;
615 int retval;
616
617 /* the last state has to be a stable state */
618 if (!tap_is_state_stable(path[num_states - 1]))
619 {
620 LOG_ERROR("BUG: TAP path doesn't finish in a stable state");
621 exit(-1);
622 }
623
624 for (i=0; i<num_states; i++)
625 {
626 if (path[i] == TAP_RESET)
627 {
628 LOG_ERROR("BUG: TAP_RESET is not a valid state for pathmove sequences");
629 exit(-1);
630 }
631
632 if ( tap_state_transition(cur_state, true) != path[i]
633 && tap_state_transition(cur_state, false) != path[i])
634 {
635 LOG_ERROR("BUG: %s -> %s isn't a valid TAP transition", tap_state_name(cur_state), tap_state_name(path[i]));
636 exit(-1);
637 }
638 cur_state = path[i];
639 }
640
641 jtag_checks();
642
643 retval = interface_jtag_add_pathmove(num_states, path);
644 cmd_queue_cur_state = path[num_states - 1];
645 if (retval!=ERROR_OK)
646 jtag_error=retval;
647 }
648
649 void jtag_add_runtest(int num_cycles, tap_state_t state)
650 {
651 int retval;
652
653 jtag_prelude(state);
654
655 /* executed by sw or hw fifo */
656 retval=interface_jtag_add_runtest(num_cycles, state);
657 if (retval!=ERROR_OK)
658 jtag_error=retval;
659 }
660
661
662 void jtag_add_clocks( int num_cycles )
663 {
664 int retval;
665
666 if( !tap_is_state_stable(cmd_queue_cur_state) )
667 {
668 LOG_ERROR( "jtag_add_clocks() was called with TAP in non-stable state \"%s\"",
669 tap_state_name(cmd_queue_cur_state) );
670 jtag_error = ERROR_JTAG_NOT_STABLE_STATE;
671 return;
672 }
673
674 if( num_cycles > 0 )
675 {
676 jtag_checks();
677
678 retval = interface_jtag_add_clocks(num_cycles);
679 if (retval != ERROR_OK)
680 jtag_error=retval;
681 }
682 }
683
684 void jtag_add_reset(int req_tlr_or_trst, int req_srst)
685 {
686 int trst_with_tlr = 0;
687 int retval;
688
689 /* FIX!!! there are *many* different cases here. A better
690 * approach is needed for legal combinations of transitions...
691 */
692 if ((jtag_reset_config & RESET_HAS_SRST)&&
693 (jtag_reset_config & RESET_HAS_TRST)&&
694 ((jtag_reset_config & RESET_SRST_PULLS_TRST)==0))
695 {
696 if (((req_tlr_or_trst&&!jtag_trst)||
697 (!req_tlr_or_trst&&jtag_trst))&&
698 ((req_srst&&!jtag_srst)||
699 (!req_srst&&jtag_srst)))
700 {
701 /* FIX!!! srst_pulls_trst allows 1,1 => 0,0 transition.... */
702 //LOG_ERROR("BUG: transition of req_tlr_or_trst and req_srst in the same jtag_add_reset() call is undefined");
703 }
704 }
705
706 /* Make sure that jtag_reset_config allows the requested reset */
707 /* if SRST pulls TRST, we can't fulfill srst == 1 with trst == 0 */
708 if (((jtag_reset_config & RESET_SRST_PULLS_TRST) && (req_srst == 1)) && (!req_tlr_or_trst))
709 {
710 LOG_ERROR("BUG: requested reset would assert trst");
711 jtag_error=ERROR_FAIL;
712 return;
713 }
714
715 /* if TRST pulls SRST, we reset with TAP T-L-R */
716 if (((jtag_reset_config & RESET_TRST_PULLS_SRST) && (req_tlr_or_trst)) && (req_srst == 0))
717 {
718 trst_with_tlr = 1;
719 }
720
721 if (req_srst && !(jtag_reset_config & RESET_HAS_SRST))
722 {
723 LOG_ERROR("BUG: requested SRST assertion, but the current configuration doesn't support this");
724 jtag_error=ERROR_FAIL;
725 return;
726 }
727
728 if (req_tlr_or_trst)
729 {
730 if (!trst_with_tlr && (jtag_reset_config & RESET_HAS_TRST))
731 {
732 jtag_trst = 1;
733 } else
734 {
735 trst_with_tlr = 1;
736 }
737 } else
738 {
739 jtag_trst = 0;
740 }
741
742 jtag_srst = req_srst;
743
744 retval = interface_jtag_add_reset(jtag_trst, jtag_srst);
745 if (retval!=ERROR_OK)
746 {
747 jtag_error=retval;
748 return;
749 }
750 jtag_execute_queue();
751
752 if (jtag_srst)
753 {
754 LOG_DEBUG("SRST line asserted");
755 }
756 else
757 {
758 LOG_DEBUG("SRST line released");
759 if (jtag_nsrst_delay)
760 jtag_add_sleep(jtag_nsrst_delay * 1000);
761 }
762
763 if (trst_with_tlr)
764 {
765 LOG_DEBUG("JTAG reset with RESET instead of TRST");
766 jtag_set_end_state(TAP_RESET);
767 jtag_add_tlr();
768 return;
769 }
770
771 if (jtag_trst)
772 {
773 /* we just asserted nTRST, so we're now in Test-Logic-Reset,
774 * and inform possible listeners about this
775 */
776 LOG_DEBUG("TRST line asserted");
777 tap_set_state(TAP_RESET);
778 jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
779 }
780 else
781 {
782 if (jtag_ntrst_delay)
783 jtag_add_sleep(jtag_ntrst_delay * 1000);
784 }
785 }
786
787 tap_state_t jtag_set_end_state(tap_state_t state)
788 {
789 if ((state == TAP_DRSHIFT)||(state == TAP_IRSHIFT))
790 {
791 LOG_ERROR("BUG: TAP_DRSHIFT/IRSHIFT can't be end state. Calling code should use a larger scan field");
792 }
793
794 if (state!=TAP_INVALID)
795 cmd_queue_end_state = state;
796 return cmd_queue_end_state;
797 }
798
799 tap_state_t jtag_get_end_state(void)
800 {
801 return cmd_queue_end_state;
802 }
803
804 void jtag_add_sleep(u32 us)
805 {
806 keep_alive(); /* we might be running on a very slow JTAG clk */
807 int retval=interface_jtag_add_sleep(us);
808 if (retval!=ERROR_OK)
809 jtag_error=retval;
810 return;
811 }
812
813 int jtag_check_value_inner(u8 *captured, u8 *in_check_value, u8 *in_check_mask, int num_bits)
814 {
815 int retval = ERROR_OK;
816
817 int compare_failed = 0;
818
819 if (in_check_mask)
820 compare_failed = buf_cmp_mask(captured, in_check_value, in_check_mask, num_bits);
821 else
822 compare_failed = buf_cmp(captured, in_check_value, num_bits);
823
824 if (compare_failed){
825 /* An error handler could have caught the failing check
826 * only report a problem when there wasn't a handler, or if the handler
827 * acknowledged the error
828 */
829 /*
830 LOG_WARNING("TAP %s:",
831 jtag_tap_name(field->tap));
832 */
833 if (compare_failed)
834 {
835 char *captured_char = buf_to_str(captured, (num_bits > DEBUG_JTAG_IOZ) ? DEBUG_JTAG_IOZ : num_bits, 16);
836 char *in_check_value_char = buf_to_str(in_check_value, (num_bits > DEBUG_JTAG_IOZ) ? DEBUG_JTAG_IOZ : num_bits, 16);
837
838 if (in_check_mask)
839 {
840 char *in_check_mask_char;
841 in_check_mask_char = buf_to_str(in_check_mask, (num_bits > DEBUG_JTAG_IOZ) ? DEBUG_JTAG_IOZ : num_bits, 16);
842 LOG_WARNING("value captured during scan didn't pass the requested check:");
843 LOG_WARNING("captured: 0x%s check_value: 0x%s check_mask: 0x%s",
844 captured_char, in_check_value_char, in_check_mask_char);
845 free(in_check_mask_char);
846 }
847 else
848 {
849 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);
850 }
851
852 free(captured_char);
853 free(in_check_value_char);
854
855 retval = ERROR_JTAG_QUEUE_FAILED;
856 }
857
858 }
859 return retval;
860 }
861
862 void jtag_check_value_mask(scan_field_t *field, u8 *value, u8 *mask)
863 {
864 assert(field->in_value != NULL);
865
866 if (value==NULL)
867 {
868 /* no checking to do */
869 return;
870 }
871
872 jtag_execute_queue_noclear();
873
874 int retval=jtag_check_value_inner(field->in_value, value, mask, field->num_bits);
875 jtag_set_error(retval);
876 }
877
878
879
880 int default_interface_jtag_execute_queue(void)
881 {
882 if (NULL == jtag)
883 {
884 LOG_ERROR("No JTAG interface configured yet. "
885 "Issue 'init' command in startup scripts "
886 "before communicating with targets.");
887 return ERROR_FAIL;
888 }
889
890 return jtag->execute_queue();
891 }
892
893 void jtag_execute_queue_noclear(void)
894 {
895 /* each flush can take as much as 1-2ms on high bandwidth low latency interfaces.
896 * E.g. a JTAG over TCP/IP or USB....
897 */
898 jtag_flush_queue_count++;
899
900 int retval=interface_jtag_execute_queue();
901 /* we keep the first error */
902 if ((jtag_error==ERROR_OK)&&(retval!=ERROR_OK))
903 {
904 jtag_error=retval;
905 }
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 int retval;
916 jtag_execute_queue_noclear();
917 retval=jtag_error;
918 jtag_error=ERROR_OK;
919 return retval;
920 }
921
922 static int jtag_reset_callback(enum jtag_event event, void *priv)
923 {
924 jtag_tap_t *tap = priv;
925
926 LOG_DEBUG("-");
927
928 if (event == JTAG_TRST_ASSERTED)
929 {
930 buf_set_ones(tap->cur_instr, tap->ir_length);
931 tap->bypass = 1;
932 }
933
934 return ERROR_OK;
935 }
936
937 void jtag_sleep(u32 us)
938 {
939 alive_sleep(us/1000);
940 }
941
942 /// maximum number of JTAG devices expected in the chain
943 #define JTAG_MAX_CHAIN_SIZE 20
944
945 #define EXTRACT_MFG(X) (((X) & 0xffe) >> 1)
946 #define EXTRACT_PART(X) (((X) & 0xffff000) >> 12)
947 #define EXTRACT_VER(X) (((X) & 0xf0000000) >> 28)
948
949 static int jtag_examine_chain_execute(u8 *idcode_buffer, unsigned num_idcode)
950 {
951 scan_field_t field = {
952 .tap = NULL,
953 .num_bits = num_idcode * 32,
954 .out_value = idcode_buffer,
955 .in_value = idcode_buffer,
956 };
957
958 // initialize to the end of chain ID value
959 for (unsigned i = 0; i < JTAG_MAX_CHAIN_SIZE; i++)
960 buf_set_u32(idcode_buffer, i * 32, 32, 0x000000FF);
961
962 jtag_add_plain_dr_scan(1, &field, TAP_RESET);
963 return jtag_execute_queue();
964 }
965
966 static bool jtag_examine_chain_check(u8 *idcodes, unsigned count)
967 {
968 u8 zero_check = 0x0;
969 u8 one_check = 0xff;
970
971 for (unsigned i = 0; i < count * 4; i++)
972 {
973 zero_check |= idcodes[i];
974 one_check &= idcodes[i];
975 }
976
977 /* if there wasn't a single non-zero bit or if all bits were one,
978 * the scan is not valid */
979 if (zero_check == 0x00 || one_check == 0xff)
980 {
981 LOG_ERROR("JTAG communication failure: check connection, "
982 "JTAG interface, target power etc.");
983 return false;
984 }
985 return true;
986 }
987
988 static void jtag_examine_chain_display(enum log_levels level, const char *msg,
989 const char *name, u32 idcode)
990 {
991 log_printf_lf(level, __FILE__, __LINE__, __FUNCTION__,
992 "JTAG tap: %s %16.16s: 0x%08x "
993 "(mfg: 0x%3.3x, part: 0x%4.4x, ver: 0x%1.1x)",
994 name, msg, idcode,
995 EXTRACT_MFG(idcode), EXTRACT_PART(idcode), EXTRACT_VER(idcode) );
996 }
997
998 static bool jtag_idcode_is_final(u32 idcode)
999 {
1000 return idcode == 0x000000FF || idcode == 0xFFFFFFFF;
1001 }
1002
1003 /**
1004 * This helper checks that remaining bits in the examined chain data are
1005 * all as expected, but a single JTAG device requires only 64 bits to be
1006 * read back correctly. This can help identify and diagnose problems
1007 * with the JTAG chain earlier, gives more helpful/explicit error messages.
1008 */
1009 static void jtag_examine_chain_end(u8 *idcodes, unsigned count, unsigned max)
1010 {
1011 bool triggered = false;
1012 for ( ; count < max - 31; count += 32)
1013 {
1014 u32 idcode = buf_get_u32(idcodes, count, 32);
1015 // do not trigger the warning if the data looks good
1016 if (!triggered && jtag_idcode_is_final(idcode))
1017 continue;
1018 LOG_WARNING("Unexpected idcode after end of chain: %d 0x%08x",
1019 count, idcode);
1020 triggered = true;
1021 }
1022 }
1023
1024 static bool jtag_examine_chain_match_tap(const struct jtag_tap_s *tap)
1025 {
1026 if (0 == tap->expected_ids_cnt)
1027 {
1028 /// @todo Enable LOG_INFO to ask for reports about unknown TAP IDs.
1029 #if 0
1030 LOG_INFO("Uknown JTAG TAP ID: 0x%08x", tap->idcode)
1031 LOG_INFO("Please report the chip name and reported ID code to the openocd project");
1032 #endif
1033 return true;
1034 }
1035
1036 /* Loop over the expected identification codes and test for a match */
1037 u8 ii;
1038 for (ii = 0; ii < tap->expected_ids_cnt; ii++)
1039 {
1040 if (tap->idcode == tap->expected_ids[ii])
1041 break;
1042 }
1043
1044 /* If none of the expected ids matched, log an error */
1045 if (ii != tap->expected_ids_cnt)
1046 {
1047 LOG_INFO("JTAG Tap/device matched");
1048 return true;
1049 }
1050 jtag_examine_chain_display(LOG_LVL_ERROR, "got",
1051 tap->dotted_name, tap->idcode);
1052 for (ii = 0; ii < tap->expected_ids_cnt; ii++)
1053 {
1054 char msg[32];
1055 snprintf(msg, sizeof(msg), "expected %hhu of %hhu",
1056 ii + 1, tap->expected_ids_cnt);
1057 jtag_examine_chain_display(LOG_LVL_ERROR, msg,
1058 tap->dotted_name, tap->expected_ids[ii]);
1059 }
1060 return false;
1061 }
1062
1063 /* Try to examine chain layout according to IEEE 1149.1 §12
1064 */
1065 static int jtag_examine_chain(void)
1066 {
1067 jtag_tap_t *tap;
1068 u8 idcode_buffer[JTAG_MAX_CHAIN_SIZE * 4];
1069 int bit_count;
1070 int 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 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 (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, "endstate", handle_endstate_command,
1659 COMMAND_EXEC, "finish JTAG operations in <tap_state>");
1660 register_command(cmd_ctx, NULL, "jtag_reset", handle_jtag_reset_command,
1661 COMMAND_EXEC, "toggle reset lines <trst> <srst>");
1662 register_command(cmd_ctx, NULL, "runtest", handle_runtest_command,
1663 COMMAND_EXEC, "move to Run-Test/Idle, and execute <num_cycles>");
1664 register_command(cmd_ctx, NULL, "irscan", handle_irscan_command,
1665 COMMAND_EXEC, "execute IR scan <device> <instr> [dev2] [instr2] ...");
1666 register_jim(cmd_ctx, "drscan", Jim_Command_drscan, "execute DR scan <device> <num_bits> <value> <num_bits1> <value2> ...");
1667 register_jim(cmd_ctx, "flush_count", Jim_Command_flush_count, "returns number of times the JTAG queue has been flushed");
1668
1669 register_command(cmd_ctx, NULL, "verify_ircapture", handle_verify_ircapture_command,
1670 COMMAND_ANY, "verify value captured during Capture-IR <enable|disable>");
1671 register_command(cmd_ctx, NULL, "verify_jtag", handle_verify_jtag_command,
1672 COMMAND_ANY, "verify value capture <enable|disable>");
1673 register_command(cmd_ctx, NULL, "tms_sequence", handle_tms_sequence_command,
1674 COMMAND_ANY, "choose short(default) or long tms_sequence <short|long>");
1675 return ERROR_OK;
1676 }
1677
1678 int jtag_interface_init(struct command_context_s *cmd_ctx)
1679 {
1680 if (jtag)
1681 return ERROR_OK;
1682
1683 if (!jtag_interface)
1684 {
1685 /* nothing was previously specified by "interface" command */
1686 LOG_ERROR("JTAG interface has to be specified, see \"interface\" command");
1687 return ERROR_JTAG_INVALID_INTERFACE;
1688 }
1689 if(hasKHz)
1690 {
1691 jtag_interface->khz(jtag_get_speed_khz(), &jtag_speed);
1692 hasKHz = false;
1693 }
1694
1695 if (jtag_interface->init() != ERROR_OK)
1696 return ERROR_JTAG_INIT_FAILED;
1697
1698 jtag = jtag_interface;
1699 return ERROR_OK;
1700 }
1701
1702 static int jtag_init_inner(struct command_context_s *cmd_ctx)
1703 {
1704 jtag_tap_t *tap;
1705 int retval;
1706
1707 LOG_DEBUG("Init JTAG chain");
1708
1709 tap = jtag_tap_next_enabled(NULL);
1710 if( tap == NULL ){
1711 LOG_ERROR("There are no enabled taps?");
1712 return ERROR_JTAG_INIT_FAILED;
1713 }
1714
1715 jtag_add_tlr();
1716 if ((retval=jtag_execute_queue())!=ERROR_OK)
1717 return retval;
1718
1719 /* examine chain first, as this could discover the real chain layout */
1720 if (jtag_examine_chain() != ERROR_OK)
1721 {
1722 LOG_ERROR("trying to validate configured JTAG chain anyway...");
1723 }
1724
1725 if (jtag_validate_chain() != ERROR_OK)
1726 {
1727 LOG_WARNING("Could not validate JTAG chain, continuing anyway...");
1728 }
1729
1730 return ERROR_OK;
1731 }
1732
1733 int jtag_interface_quit(void)
1734 {
1735 if (!jtag || !jtag->quit)
1736 return ERROR_OK;
1737
1738 // close the JTAG interface
1739 int result = jtag->quit();
1740 if (ERROR_OK != result)
1741 LOG_ERROR("failed: %d", result);
1742
1743 return ERROR_OK;
1744 }
1745
1746
1747 int jtag_init_reset(struct command_context_s *cmd_ctx)
1748 {
1749 int retval;
1750
1751 if ((retval=jtag_interface_init(cmd_ctx)) != ERROR_OK)
1752 return retval;
1753
1754 LOG_DEBUG("Trying to bring the JTAG controller to life by asserting TRST / RESET");
1755
1756 /* Reset can happen after a power cycle.
1757 *
1758 * Ideally we would only assert TRST or run RESET before the target reset.
1759 *
1760 * However w/srst_pulls_trst, trst is asserted together with the target
1761 * reset whether we want it or not.
1762 *
1763 * NB! Some targets have JTAG circuitry disabled until a
1764 * trst & srst has been asserted.
1765 *
1766 * NB! here we assume nsrst/ntrst delay are sufficient!
1767 *
1768 * NB! order matters!!!! srst *can* disconnect JTAG circuitry
1769 *
1770 */
1771 jtag_add_reset(1, 0); /* RESET or TRST */
1772 if (jtag_reset_config & RESET_HAS_SRST)
1773 {
1774 jtag_add_reset(1, 1);
1775 if ((jtag_reset_config & RESET_SRST_PULLS_TRST)==0)
1776 jtag_add_reset(0, 1);
1777 }
1778 jtag_add_reset(0, 0);
1779 if ((retval = jtag_execute_queue()) != ERROR_OK)
1780 return retval;
1781
1782 /* Check that we can communication on the JTAG chain + eventually we want to
1783 * be able to perform enumeration only after OpenOCD has started
1784 * telnet and GDB server
1785 *
1786 * That would allow users to more easily perform any magic they need to before
1787 * reset happens.
1788 */
1789 return jtag_init_inner(cmd_ctx);
1790 }
1791
1792 int jtag_init(struct command_context_s *cmd_ctx)
1793 {
1794 int retval;
1795 if ((retval=jtag_interface_init(cmd_ctx)) != ERROR_OK)
1796 return retval;
1797 if (jtag_init_inner(cmd_ctx)==ERROR_OK)
1798 {
1799 return ERROR_OK;
1800 }
1801 return jtag_init_reset(cmd_ctx);
1802 }
1803
1804 void jtag_set_speed_khz(unsigned khz)
1805 {
1806 speed_khz = khz;
1807 }
1808 unsigned jtag_get_speed_khz(void)
1809 {
1810 return speed_khz;
1811 }
1812
1813 static int default_khz(int khz, int *jtag_speed)
1814 {
1815 LOG_ERROR("Translation from khz to jtag_speed not implemented");
1816 return ERROR_FAIL;
1817 }
1818
1819 static int default_speed_div(int speed, int *khz)
1820 {
1821 LOG_ERROR("Translation from jtag_speed to khz not implemented");
1822 return ERROR_FAIL;
1823 }
1824
1825 static int default_power_dropout(int *dropout)
1826 {
1827 *dropout=0; /* by default we can't detect power dropout */
1828 return ERROR_OK;
1829 }
1830
1831 static int default_srst_asserted(int *srst_asserted)
1832 {
1833 *srst_asserted=0; /* by default we can't detect srst asserted */
1834 return ERROR_OK;
1835 }
1836
1837 static int handle_interface_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1838 {
1839 int i;
1840 int retval;
1841
1842 /* check whether the interface is already configured */
1843 if (jtag_interface)
1844 {
1845 LOG_WARNING("Interface already configured, ignoring");
1846 return ERROR_OK;
1847 }
1848
1849 /* interface name is a mandatory argument */
1850 if (argc < 1 || args[0][0] == '\0')
1851 {
1852 return ERROR_COMMAND_SYNTAX_ERROR;
1853 }
1854
1855 for (i=0; jtag_interfaces[i]; i++)
1856 {
1857 if (strcmp(args[0], jtag_interfaces[i]->name) == 0)
1858 {
1859 if ((retval = jtag_interfaces[i]->register_commands(cmd_ctx)) != ERROR_OK)
1860 {
1861 return retval;
1862 }
1863
1864 jtag_interface = jtag_interfaces[i];
1865
1866 if (jtag_interface->khz == NULL)
1867 {
1868 jtag_interface->khz = default_khz;
1869 }
1870 if (jtag_interface->speed_div == NULL)
1871 {
1872 jtag_interface->speed_div = default_speed_div;
1873 }
1874 if (jtag_interface->power_dropout == NULL)
1875 {
1876 jtag_interface->power_dropout = default_power_dropout;
1877 }
1878 if (jtag_interface->srst_asserted == NULL)
1879 {
1880 jtag_interface->srst_asserted = default_srst_asserted;
1881 }
1882
1883 return ERROR_OK;
1884 }
1885 }
1886
1887 /* no valid interface was found (i.e. the configuration option,
1888 * didn't match one of the compiled-in interfaces
1889 */
1890 LOG_ERROR("No valid jtag interface found (%s)", args[0]);
1891 LOG_ERROR("compiled-in jtag interfaces:");
1892 for (i = 0; jtag_interfaces[i]; i++)
1893 {
1894 LOG_ERROR("%i: %s", i, jtag_interfaces[i]->name);
1895 }
1896
1897 return ERROR_JTAG_INVALID_INTERFACE;
1898 }
1899
1900 static int handle_jtag_device_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1901 {
1902 int e;
1903 char buf[1024];
1904 Jim_Obj *newargs[ 10 ];
1905 /*
1906 * CONVERT SYNTAX
1907 * argv[-1] = command
1908 * argv[ 0] = ir length
1909 * argv[ 1] = ir capture
1910 * argv[ 2] = ir mask
1911 * argv[ 3] = not actually used by anything but in the docs
1912 */
1913
1914 if( argc < 4 ){
1915 command_print( cmd_ctx, "OLD DEPRECATED SYNTAX: Please use the NEW syntax");
1916 return ERROR_OK;
1917 }
1918 command_print( cmd_ctx, "OLD SYNTAX: DEPRECATED - translating to new syntax");
1919 command_print( cmd_ctx, "jtag newtap CHIP TAP -irlen %s -ircapture %s -irvalue %s",
1920 args[0],
1921 args[1],
1922 args[2] );
1923 command_print( cmd_ctx, "Example: STM32 has 2 taps, the cortexM3(len4) + boundaryscan(len5)");
1924 command_print( cmd_ctx, "jtag newtap stm32 cortexm3 ....., thus creating the tap: \"stm32.cortexm3\"");
1925 command_print( cmd_ctx, "jtag newtap stm32 boundary ....., and the tap: \"stm32.boundary\"");
1926 command_print( cmd_ctx, "And then refer to the taps by the dotted name.");
1927
1928 newargs[0] = Jim_NewStringObj( interp, "jtag", -1 );
1929 newargs[1] = Jim_NewStringObj( interp, "newtap", -1 );
1930 sprintf( buf, "chip%d", jtag_tap_count() );
1931 newargs[2] = Jim_NewStringObj( interp, buf, -1 );
1932 sprintf( buf, "tap%d", jtag_tap_count() );
1933 newargs[3] = Jim_NewStringObj( interp, buf, -1 );
1934 newargs[4] = Jim_NewStringObj( interp, "-irlen", -1 );
1935 newargs[5] = Jim_NewStringObj( interp, args[0], -1 );
1936 newargs[6] = Jim_NewStringObj( interp, "-ircapture", -1 );
1937 newargs[7] = Jim_NewStringObj( interp, args[1], -1 );
1938 newargs[8] = Jim_NewStringObj( interp, "-irmask", -1 );
1939 newargs[9] = Jim_NewStringObj( interp, args[2], -1 );
1940
1941 command_print( cmd_ctx, "NEW COMMAND:");
1942 sprintf( buf, "%s %s %s %s %s %s %s %s %s %s",
1943 Jim_GetString( newargs[0], NULL ),
1944 Jim_GetString( newargs[1], NULL ),
1945 Jim_GetString( newargs[2], NULL ),
1946 Jim_GetString( newargs[3], NULL ),
1947 Jim_GetString( newargs[4], NULL ),
1948 Jim_GetString( newargs[5], NULL ),
1949 Jim_GetString( newargs[6], NULL ),
1950 Jim_GetString( newargs[7], NULL ),
1951 Jim_GetString( newargs[8], NULL ),
1952 Jim_GetString( newargs[9], NULL ) );
1953
1954 e = jim_jtag_command( interp, 10, newargs );
1955 if( e != JIM_OK ){
1956 command_print( cmd_ctx, "%s", Jim_GetString( Jim_GetResult(interp), NULL ) );
1957 }
1958 return e;
1959 }
1960
1961 static int handle_scan_chain_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1962 {
1963 jtag_tap_t *tap;
1964
1965 tap = jtag_all_taps();
1966 command_print(cmd_ctx, " TapName | Enabled | IdCode Expected IrLen IrCap IrMask Instr ");
1967 command_print(cmd_ctx, "---|--------------------|---------|------------|------------|------|------|------|---------");
1968
1969 while( tap ){
1970 u32 expected, expected_mask, cur_instr, ii;
1971 expected = buf_get_u32(tap->expected, 0, tap->ir_length);
1972 expected_mask = buf_get_u32(tap->expected_mask, 0, tap->ir_length);
1973 cur_instr = buf_get_u32(tap->cur_instr, 0, tap->ir_length);
1974
1975 command_print(cmd_ctx,
1976 "%2d | %-18s | %c | 0x%08x | 0x%08x | 0x%02x | 0x%02x | 0x%02x | 0x%02x",
1977 tap->abs_chain_position,
1978 tap->dotted_name,
1979 tap->enabled ? 'Y' : 'n',
1980 tap->idcode,
1981 (tap->expected_ids_cnt > 0 ? tap->expected_ids[0] : 0),
1982 tap->ir_length,
1983 expected,
1984 expected_mask,
1985 cur_instr);
1986
1987 for (ii = 1; ii < tap->expected_ids_cnt; ii++) {
1988 command_print(cmd_ctx, " | | | | 0x%08x | | | | ",
1989 tap->expected_ids[ii]);
1990 }
1991
1992 tap = tap->next_tap;
1993 }
1994
1995 return ERROR_OK;
1996 }
1997
1998 static int handle_reset_config_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1999 {
2000 int new_cfg = 0;
2001 int mask = 0;
2002
2003 if (argc < 1)
2004 return ERROR_COMMAND_SYNTAX_ERROR;
2005
2006 /* Original versions cared about the order of these tokens:
2007 * reset_config signals [combination [trst_type [srst_type]]]
2008 * They also clobbered the previous configuration even on error.
2009 *
2010 * Here we don't care about the order, and only change values
2011 * which have been explicitly specified.
2012 */
2013 for (; argc; argc--, args++) {
2014 int tmp = 0;
2015 int m;
2016
2017 /* signals */
2018 m = RESET_HAS_TRST | RESET_HAS_SRST;
2019 if (strcmp(*args, "none") == 0)
2020 tmp = RESET_NONE;
2021 else if (strcmp(*args, "trst_only") == 0)
2022 tmp = RESET_HAS_TRST;
2023 else if (strcmp(*args, "srst_only") == 0)
2024 tmp = RESET_HAS_SRST;
2025 else if (strcmp(*args, "trst_and_srst") == 0)
2026 tmp = RESET_HAS_TRST | RESET_HAS_SRST;
2027 else
2028 m = 0;
2029 if (mask & m) {
2030 LOG_ERROR("extra reset_config %s spec (%s)",
2031 "signal", *args);
2032 return ERROR_INVALID_ARGUMENTS;
2033 }
2034 if (m)
2035 goto next;
2036
2037 /* combination (options for broken wiring) */
2038 m = RESET_SRST_PULLS_TRST | RESET_TRST_PULLS_SRST;
2039 if (strcmp(*args, "separate") == 0)
2040 /* separate reset lines - default */;
2041 else if (strcmp(*args, "srst_pulls_trst") == 0)
2042 tmp |= RESET_SRST_PULLS_TRST;
2043 else if (strcmp(*args, "trst_pulls_srst") == 0)
2044 tmp |= RESET_TRST_PULLS_SRST;
2045 else if (strcmp(*args, "combined") == 0)
2046 tmp |= RESET_SRST_PULLS_TRST | RESET_TRST_PULLS_SRST;
2047 else
2048 m = 0;
2049 if (mask & m) {
2050 LOG_ERROR("extra reset_config %s spec (%s)",
2051 "combination", *args);
2052 return ERROR_INVALID_ARGUMENTS;
2053 }
2054 if (m)
2055 goto next;
2056
2057 /* trst_type (NOP without HAS_TRST) */
2058 m = RESET_TRST_OPEN_DRAIN;
2059 if (strcmp(*args, "trst_open_drain") == 0)
2060 tmp |= RESET_TRST_OPEN_DRAIN;
2061 else if (strcmp(*args, "trst_push_pull") == 0)
2062 /* push/pull from adapter - default */;
2063 else
2064 m = 0;
2065 if (mask & m) {
2066 LOG_ERROR("extra reset_config %s spec (%s)",
2067 "trst_type", *args);
2068 return ERROR_INVALID_ARGUMENTS;
2069 }
2070 if (m)
2071 goto next;
2072
2073 /* srst_type (NOP without HAS_SRST) */
2074 m |= RESET_SRST_PUSH_PULL;
2075 if (strcmp(*args, "srst_push_pull") == 0)
2076 tmp |= RESET_SRST_PUSH_PULL;
2077 else if (strcmp(*args, "srst_open_drain") == 0)
2078 /* open drain from adapter - default */;
2079 else
2080 m = 0;
2081 if (mask & m) {
2082 LOG_ERROR("extra reset_config %s spec (%s)",
2083 "srst_type", *args);
2084 return ERROR_INVALID_ARGUMENTS;
2085 }
2086 if (m)
2087 goto next;
2088
2089 /* caller provided nonsense; fail */
2090 LOG_ERROR("unknown reset_config flag (%s)", *args);
2091 return ERROR_INVALID_ARGUMENTS;
2092
2093 next:
2094 /* Remember the bits which were specified (mask)
2095 * and their new values (new_cfg).
2096 */
2097 mask |= m;
2098 new_cfg |= tmp;
2099 }
2100
2101 /* clear previous values of those bits, save new values */
2102 jtag_reset_config &= ~mask;
2103 jtag_reset_config |= new_cfg;
2104
2105 return ERROR_OK;
2106 }
2107
2108 static int handle_jtag_nsrst_delay_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2109 {
2110 if (argc < 1)
2111 {
2112 LOG_ERROR("jtag_nsrst_delay <ms> command takes one required argument");
2113 exit(-1);
2114 }
2115 else
2116 {
2117 jtag_set_nsrst_delay(strtoul(args[0], NULL, 0));
2118 }
2119
2120 return ERROR_OK;
2121 }
2122
2123 static int handle_jtag_ntrst_delay_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2124 {
2125 if (argc < 1)
2126 {
2127 LOG_ERROR("jtag_ntrst_delay <ms> command takes one required argument");
2128 exit(-1);
2129 }
2130 else
2131 {
2132 jtag_set_ntrst_delay(strtoul(args[0], NULL, 0));
2133 }
2134
2135 return ERROR_OK;
2136 }
2137
2138
2139 static int handle_jtag_speed_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2140 {
2141 int retval=ERROR_OK;
2142
2143 if (argc == 1)
2144 {
2145 LOG_DEBUG("handle jtag speed");
2146
2147 int cur_speed = 0;
2148 cur_speed = jtag_speed = strtoul(args[0], NULL, 0);
2149
2150 /* this command can be called during CONFIG,
2151 * in which case jtag isn't initialized */
2152 if (jtag)
2153 {
2154 retval=jtag->speed(cur_speed);
2155 }
2156 } else if (argc == 0)
2157 {
2158 } else
2159 {
2160 return ERROR_COMMAND_SYNTAX_ERROR;
2161 }
2162 command_print(cmd_ctx, "jtag_speed: %d", jtag_speed);
2163
2164 return retval;
2165 }
2166
2167 static int handle_jtag_khz_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2168 {
2169 int retval=ERROR_OK;
2170 LOG_DEBUG("handle jtag khz");
2171
2172 int cur_speed = 0;
2173 if(argc == 1)
2174 {
2175 jtag_set_speed_khz(strtoul(args[0], NULL, 0));
2176 if (jtag != NULL)
2177 {
2178 LOG_DEBUG("have interface set up");
2179 int speed_div1;
2180 if ((retval=jtag->khz(jtag_get_speed_khz(), &speed_div1))!=ERROR_OK)
2181 {
2182 jtag_set_speed_khz(0);
2183 return retval;
2184 }
2185
2186 cur_speed = jtag_speed = speed_div1;
2187
2188 retval=jtag->speed(cur_speed);
2189 } else
2190 {
2191 hasKHz = true;
2192 }
2193 } else if (argc==0)
2194 {
2195 } else
2196 {
2197 return ERROR_COMMAND_SYNTAX_ERROR;
2198 }
2199 cur_speed = jtag_get_speed_khz();
2200
2201 if (jtag!=NULL)
2202 {
2203 if ((retval=jtag->speed_div(jtag_speed, &cur_speed))!=ERROR_OK)
2204 return retval;
2205 }
2206
2207 if (cur_speed)
2208 command_print(cmd_ctx, "%d kHz", cur_speed);
2209 else
2210 command_print(cmd_ctx, "RCLK - adaptive");
2211 return retval;
2212
2213 }
2214
2215 static int handle_endstate_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2216 {
2217 if (argc < 1)
2218 return ERROR_COMMAND_SYNTAX_ERROR;
2219
2220 tap_state_t state = tap_state_by_name(args[0]);
2221 if (state < 0)
2222 {
2223 command_print( cmd_ctx, "Invalid state name: %s\n", args[0] );
2224 return ERROR_COMMAND_SYNTAX_ERROR;
2225 }
2226 jtag_set_end_state(state);
2227 jtag_execute_queue();
2228
2229 command_print(cmd_ctx, "current endstate: %s",
2230 tap_state_name(cmd_queue_end_state));
2231
2232 return ERROR_OK;
2233 }
2234
2235 static int handle_jtag_reset_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2236 {
2237 int trst = -1;
2238 int srst = -1;
2239
2240 if (argc < 2)
2241 {
2242 return ERROR_COMMAND_SYNTAX_ERROR;
2243 }
2244
2245 if (args[0][0] == '1')
2246 trst = 1;
2247 else if (args[0][0] == '0')
2248 trst = 0;
2249 else
2250 {
2251 return ERROR_COMMAND_SYNTAX_ERROR;
2252 }
2253
2254 if (args[1][0] == '1')
2255 srst = 1;
2256 else if (args[1][0] == '0')
2257 srst = 0;
2258 else
2259 {
2260 return ERROR_COMMAND_SYNTAX_ERROR;
2261 }
2262
2263 if (jtag_interface_init(cmd_ctx) != ERROR_OK)
2264 return ERROR_JTAG_INIT_FAILED;
2265
2266 jtag_add_reset(trst, srst);
2267 jtag_execute_queue();
2268
2269 return ERROR_OK;
2270 }
2271
2272 static int handle_runtest_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2273 {
2274 if (argc < 1)
2275 {
2276 return ERROR_COMMAND_SYNTAX_ERROR;
2277 }
2278
2279 jtag_add_runtest(strtol(args[0], NULL, 0), jtag_get_end_state());
2280 jtag_execute_queue();
2281
2282 return ERROR_OK;
2283
2284 }
2285
2286 /*
2287 * For "irscan" or "drscan" commands, the "end" (really, "next") state
2288 * should be stable ... and *NOT* a shift state, otherwise free-running
2289 * jtag clocks could change the values latched by the update state.
2290 */
2291 static bool scan_is_safe(tap_state_t state)
2292 {
2293 switch (state)
2294 {
2295 case TAP_RESET:
2296 case TAP_IDLE:
2297 case TAP_DRPAUSE:
2298 case TAP_IRPAUSE:
2299 return true;
2300 default:
2301 return false;
2302 }
2303 }
2304
2305
2306 static int handle_irscan_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2307 {
2308 int i;
2309 scan_field_t *fields;
2310 jtag_tap_t *tap;
2311 tap_state_t endstate;
2312
2313 if ((argc < 2) || (argc % 2))
2314 {
2315 return ERROR_COMMAND_SYNTAX_ERROR;
2316 }
2317
2318 /* optional "-endstate" "statename" at the end of the arguments,
2319 * so that e.g. IRPAUSE can let us load the data register before
2320 * entering RUN/IDLE to execute the instruction we load here.
2321 */
2322 endstate = TAP_IDLE;
2323
2324 if( argc >= 4 ){
2325 /* have at least one pair of numbers. */
2326 /* is last pair the magic text? */
2327 if( 0 == strcmp( "-endstate", args[ argc - 2 ] ) ){
2328 const char *cpA;
2329 const char *cpS;
2330 cpA = args[ argc-1 ];
2331 for( endstate = 0 ; endstate < TAP_NUM_STATES ; endstate++ ){
2332 cpS = tap_state_name( endstate );
2333 if( 0 == strcmp( cpA, cpS ) ){
2334 break;
2335 }
2336 }
2337 if( endstate >= TAP_NUM_STATES ){
2338 return ERROR_COMMAND_SYNTAX_ERROR;
2339 } else {
2340 if (!scan_is_safe(endstate))
2341 LOG_WARNING("irscan with unsafe "
2342 "endstate \"%s\"", cpA);
2343 /* found - remove the last 2 args */
2344 argc -= 2;
2345 }
2346 }
2347 }
2348
2349 int num_fields = argc / 2;
2350
2351 fields = malloc(sizeof(scan_field_t) * num_fields);
2352
2353 for (i = 0; i < num_fields; i++)
2354 {
2355 tap = jtag_tap_by_string( args[i*2] );
2356 if (tap==NULL)
2357 {
2358 command_print( cmd_ctx, "Tap: %s unknown", args[i*2] );
2359 return ERROR_FAIL;
2360 }
2361 int field_size = tap->ir_length;
2362 fields[i].tap = tap;
2363 fields[i].num_bits = field_size;
2364 fields[i].out_value = malloc(CEIL(field_size, 8));
2365 buf_set_u32(fields[i].out_value, 0, field_size, strtoul(args[i*2+1], NULL, 0));
2366 fields[i].in_value = NULL;
2367 }
2368
2369 /* did we have an endstate? */
2370 jtag_add_ir_scan(num_fields, fields, endstate);
2371
2372 int retval=jtag_execute_queue();
2373
2374 for (i = 0; i < num_fields; i++)
2375 free(fields[i].out_value);
2376
2377 free (fields);
2378
2379 return retval;
2380 }
2381
2382 static int Jim_Command_drscan(Jim_Interp *interp, int argc, Jim_Obj *const *args)
2383 {
2384 int retval;
2385 scan_field_t *fields;
2386 int num_fields;
2387 int field_count = 0;
2388 int i, e;
2389 jtag_tap_t *tap;
2390 tap_state_t endstate;
2391
2392 /* args[1] = device
2393 * args[2] = num_bits
2394 * args[3] = hex string
2395 * ... repeat num bits and hex string ...
2396 *
2397 * .. optionally:
2398 * args[N-2] = "-endstate"
2399 * args[N-1] = statename
2400 */
2401 if ((argc < 4) || ((argc % 2)!=0))
2402 {
2403 Jim_WrongNumArgs(interp, 1, args, "wrong arguments");
2404 return JIM_ERR;
2405 }
2406
2407 endstate = TAP_IDLE;
2408
2409 /* validate arguments as numbers */
2410 e = JIM_OK;
2411 for (i = 2; i < argc; i+=2)
2412 {
2413 long bits;
2414 const char *cp;
2415
2416 e = Jim_GetLong(interp, args[i], &bits);
2417 /* If valid - try next arg */
2418 if( e == JIM_OK ){
2419 continue;
2420 }
2421
2422 /* Not valid.. are we at the end? */
2423 if ( ((i+2) != argc) ){
2424 /* nope, then error */
2425 return e;
2426 }
2427
2428 /* it could be: "-endstate FOO"
2429 * e.g. DRPAUSE so we can issue more instructions
2430 * before entering RUN/IDLE and executing them.
2431 */
2432
2433 /* get arg as a string. */
2434 cp = Jim_GetString( args[i], NULL );
2435 /* is it the magic? */
2436 if( 0 == strcmp( "-endstate", cp ) ){
2437 /* is the statename valid? */
2438 cp = Jim_GetString( args[i+1], NULL );
2439
2440 /* see if it is a valid state name */
2441 endstate = tap_state_by_name(cp);
2442 if( endstate < 0 ){
2443 /* update the error message */
2444 Jim_SetResult_sprintf(interp,"endstate: %s invalid", cp );
2445 } else {
2446 if (!scan_is_safe(endstate))
2447 LOG_WARNING("drscan with unsafe "
2448 "endstate \"%s\"", cp);
2449
2450 /* valid - so clear the error */
2451 e = JIM_OK;
2452 /* and remove the last 2 args */
2453 argc -= 2;
2454 }
2455 }
2456
2457 /* Still an error? */
2458 if( e != JIM_OK ){
2459 return e; /* too bad */
2460 }
2461 } /* validate args */
2462
2463 tap = jtag_tap_by_jim_obj( interp, args[1] );
2464 if( tap == NULL ){
2465 return JIM_ERR;
2466 }
2467
2468 num_fields=(argc-2)/2;
2469 fields = malloc(sizeof(scan_field_t) * num_fields);
2470 for (i = 2; i < argc; i+=2)
2471 {
2472 long bits;
2473 int len;
2474 const char *str;
2475
2476 Jim_GetLong(interp, args[i], &bits);
2477 str = Jim_GetString(args[i+1], &len);
2478
2479 fields[field_count].tap = tap;
2480 fields[field_count].num_bits = bits;
2481 fields[field_count].out_value = malloc(CEIL(bits, 8));
2482 str_to_buf(str, len, fields[field_count].out_value, bits, 0);
2483 fields[field_count].in_value = fields[field_count].out_value;
2484 field_count++;
2485 }
2486
2487 jtag_add_dr_scan(num_fields, fields, endstate);
2488
2489 retval = jtag_execute_queue();
2490 if (retval != ERROR_OK)
2491 {
2492 Jim_SetResultString(interp, "drscan: jtag execute failed",-1);
2493 return JIM_ERR;
2494 }
2495
2496 field_count=0;
2497 Jim_Obj *list = Jim_NewListObj(interp, NULL, 0);
2498 for (i = 2; i < argc; i+=2)
2499 {
2500 long bits;
2501 char *str;
2502
2503 Jim_GetLong(interp, args[i], &bits);
2504 str = buf_to_str(fields[field_count].in_value, bits, 16);
2505 free(fields[field_count].out_value);
2506
2507 Jim_ListAppendElement(interp, list, Jim_NewStringObj(interp, str, strlen(str)));
2508 free(str);
2509 field_count++;
2510 }
2511
2512 Jim_SetResult(interp, list);
2513
2514 free(fields);
2515
2516 return JIM_OK;
2517 }
2518
2519
2520 static int Jim_Command_flush_count(Jim_Interp *interp, int argc, Jim_Obj *const *args)
2521 {
2522 Jim_SetResult(interp, Jim_NewIntObj(interp, jtag_get_flush_queue_count()));
2523
2524 return JIM_OK;
2525 }
2526
2527
2528 static int handle_verify_ircapture_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2529 {
2530 if (argc == 1)
2531 {
2532 if (strcmp(args[0], "enable") == 0)
2533 {
2534 jtag_verify_capture_ir = 1;
2535 }
2536 else if (strcmp(args[0], "disable") == 0)
2537 {
2538 jtag_verify_capture_ir = 0;
2539 } else
2540 {
2541 return ERROR_COMMAND_SYNTAX_ERROR;
2542 }
2543 } else if (argc != 0)
2544 {
2545 return ERROR_COMMAND_SYNTAX_ERROR;
2546 }
2547
2548 command_print(cmd_ctx, "verify Capture-IR is %s", (jtag_verify_capture_ir) ? "enabled": "disabled");
2549
2550 return ERROR_OK;
2551 }
2552
2553 void jtag_set_verify(bool enable)
2554 {
2555 jtag_verify = enable;
2556 }
2557
2558 bool jtag_will_verify()
2559 {
2560 return jtag_verify;
2561 }
2562
2563 static int handle_verify_jtag_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2564 {
2565 if (argc > 1)
2566 return ERROR_COMMAND_SYNTAX_ERROR;
2567
2568 if (argc == 1)
2569 {
2570 if (strcmp(args[0], "enable") == 0)
2571 jtag_set_verify(true);
2572 else if (strcmp(args[0], "disable") == 0)
2573 jtag_set_verify(false);
2574 else
2575 return ERROR_COMMAND_SYNTAX_ERROR;
2576 }
2577
2578 const char *status = jtag_will_verify() ? "enabled": "disabled";
2579 command_print(cmd_ctx, "verify jtag capture is %s", status);
2580
2581 return ERROR_OK;
2582 }
2583
2584
2585 int jtag_power_dropout(int *dropout)
2586 {
2587 return jtag->power_dropout(dropout);
2588 }
2589
2590 int jtag_srst_asserted(int *srst_asserted)
2591 {
2592 return jtag->srst_asserted(srst_asserted);
2593 }
2594
2595 void jtag_tap_handle_event( jtag_tap_t * tap, enum jtag_tap_event e)
2596 {
2597 jtag_tap_event_action_t * jteap;
2598 int done;
2599
2600 jteap = tap->event_action;
2601
2602 done = 0;
2603 while (jteap) {
2604 if (jteap->event == e) {
2605 done = 1;
2606 LOG_DEBUG( "JTAG tap: %s event: %d (%s) action: %s\n",
2607 tap->dotted_name,
2608 e,
2609 Jim_Nvp_value2name_simple(nvp_jtag_tap_event, e)->name,
2610 Jim_GetString(jteap->body, NULL) );
2611 if (Jim_EvalObj(interp, jteap->body) != JIM_OK) {
2612 Jim_PrintErrorMessage(interp);
2613 }
2614 }
2615
2616 jteap = jteap->next;
2617 }
2618
2619 if (!done) {
2620 LOG_DEBUG( "event %d %s - no action",
2621 e,
2622 Jim_Nvp_value2name_simple( nvp_jtag_tap_event, e)->name);
2623 }
2624 }
2625
2626 static int handle_tms_sequence_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2627 {
2628 if (argc > 1)
2629 return ERROR_COMMAND_SYNTAX_ERROR;
2630
2631 if (argc == 1)
2632 {
2633 bool use_new_table;
2634 if (strcmp(args[0], "short") == 0)
2635 use_new_table = true;
2636 else if (strcmp(args[0], "long") == 0)
2637 use_new_table = false;
2638 else
2639 return ERROR_COMMAND_SYNTAX_ERROR;
2640
2641 tap_use_new_tms_table(use_new_table);
2642 }
2643
2644 command_print(cmd_ctx, "tms sequence is %s",
2645 tap_uses_new_tms_table() ? "short": "long");
2646
2647 return ERROR_OK;
2648 }
2649
2650 /**
2651 * Function jtag_add_statemove
2652 * moves from the current state to the goal \a state. This needs
2653 * to be handled according to the xsvf spec, see the XSTATE command
2654 * description.
2655 */
2656 int jtag_add_statemove(tap_state_t goal_state)
2657 {
2658 int retval = ERROR_OK;
2659
2660 tap_state_t moves[8];
2661 tap_state_t cur_state = cmd_queue_cur_state;
2662 int i;
2663 int tms_bits;
2664 int tms_count;
2665
2666 LOG_DEBUG( "cur_state=%s goal_state=%s",
2667 tap_state_name(cur_state),
2668 tap_state_name(goal_state) );
2669
2670
2671 /* From the XSVF spec, pertaining to XSTATE:
2672
2673 For special states known as stable states (Test-Logic-Reset,
2674 Run-Test/Idle, Pause-DR, Pause- IR), an XSVF interpreter follows
2675 predefined TAP state paths when the starting state is a stable state and
2676 when the XSTATE specifies a new stable state (see the STATE command in
2677 the [Ref 5] for the TAP state paths between stable states). For
2678 non-stable states, XSTATE should specify a state that is only one TAP
2679 state transition distance from the current TAP state to avoid undefined
2680 TAP state paths. A sequence of multiple XSTATE commands can be issued to
2681 transition the TAP through a specific state path.
2682 */
2683
2684 if (goal_state==cur_state )
2685 ; /* nothing to do */
2686
2687 else if( goal_state==TAP_RESET )
2688 {
2689 jtag_add_tlr();
2690 }
2691
2692 else if( tap_is_state_stable(cur_state) && tap_is_state_stable(goal_state) )
2693 {
2694 /* note: unless tms_bits holds a path that agrees with [Ref 5] in above
2695 spec, then this code is not fully conformant to the xsvf spec. This
2696 puts a burden on tap_get_tms_path() function from the xsvf spec.
2697 If in doubt, you should confirm that that burden is being met.
2698 */
2699
2700 tms_bits = tap_get_tms_path(cur_state, goal_state);
2701 tms_count = tap_get_tms_path_len(cur_state, goal_state);
2702
2703 assert( (unsigned) tms_count < DIM(moves) );
2704
2705 for (i=0; i<tms_count; i++, tms_bits>>=1)
2706 {
2707 bool bit = tms_bits & 1;
2708
2709 cur_state = tap_state_transition(cur_state, bit);
2710 moves[i] = cur_state;
2711 }
2712
2713 jtag_add_pathmove(tms_count, moves);
2714 }
2715
2716 /* else state must be immediately reachable in one clock cycle, and does not
2717 need to be a stable state.
2718 */
2719 else if( tap_state_transition(cur_state, true) == goal_state
2720 || tap_state_transition(cur_state, false) == goal_state )
2721 {
2722 /* move a single state */
2723 moves[0] = goal_state;
2724 jtag_add_pathmove( 1, moves );
2725 }
2726
2727 else
2728 {
2729 retval = ERROR_FAIL;
2730 }
2731
2732 return retval;
2733 }
2734
2735 void jtag_set_nsrst_delay(unsigned delay)
2736 {
2737 jtag_nsrst_delay = delay;
2738 }
2739 void jtag_set_ntrst_delay(unsigned delay)
2740 {
2741 jtag_ntrst_delay = delay;
2742 }
2743
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Open On-Chip Debugger

Linking to existing account procedure

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SSH host keys fingerprints

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384 SHA256:jHIbSQa4REvwCFG4cq5LBlBLxmxSqelQPem/EXIrxjk gerrit-code-review@openocd.org (ECDSA)
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+--[ED25519 256]--+
|=..              |
|+o..   .         |
|*.o   . .        |
|+B . . .         |
|Bo. = o S        |
|Oo.+ + =         |
|oB=.* = . o      |
| =+=.+   + E     |
|. .=o   . o      |
+----[SHA256]-----+
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