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Factoring of jtag_examine_chain for maintainability:
[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 /* Try to examine chain layout according to IEEE 1149.1 §12
950 */
951 static int jtag_examine_chain(void)
952 {
953 jtag_tap_t *tap;
954 scan_field_t field;
955 u8 idcode_buffer[JTAG_MAX_CHAIN_SIZE * 4];
956 int i;
957 int bit_count;
958 int device_count = 0;
959 u8 zero_check = 0x0;
960 u8 one_check = 0xff;
961
962 field.tap = NULL;
963 field.num_bits = sizeof(idcode_buffer) * 8;
964 field.out_value = idcode_buffer;
965
966 field.in_value = idcode_buffer;
967
968
969
970
971 for (i = 0; i < JTAG_MAX_CHAIN_SIZE; i++)
972 {
973 buf_set_u32(idcode_buffer, i * 32, 32, 0x000000FF);
974 }
975
976 jtag_add_plain_dr_scan(1, &field, TAP_RESET);
977 jtag_execute_queue();
978
979 for (i = 0; i < JTAG_MAX_CHAIN_SIZE * 4; i++)
980 {
981 zero_check |= idcode_buffer[i];
982 one_check &= idcode_buffer[i];
983 }
984
985 /* if there wasn't a single non-zero bit or if all bits were one, the scan isn't valid */
986 if ((zero_check == 0x00) || (one_check == 0xff))
987 {
988 LOG_ERROR("JTAG communication failure, check connection, JTAG interface, target power etc.");
989 return ERROR_JTAG_INIT_FAILED;
990 }
991
992 /* point at the 1st tap */
993 tap = jtag_tap_next_enabled(NULL);
994 if( tap == NULL ){
995 LOG_ERROR("JTAG: No taps enabled?");
996 return ERROR_JTAG_INIT_FAILED;
997 }
998
999 for (bit_count = 0; bit_count < (JTAG_MAX_CHAIN_SIZE * 32) - 31;)
1000 {
1001 u32 idcode = buf_get_u32(idcode_buffer, bit_count, 32);
1002 if ((idcode & 1) == 0)
1003 {
1004 /* LSB must not be 0, this indicates a device in bypass */
1005 LOG_WARNING("Tap/Device does not have IDCODE");
1006 idcode=0;
1007
1008 bit_count += 1;
1009 }
1010 else
1011 {
1012 u32 manufacturer;
1013 u32 part;
1014 u32 version;
1015
1016 /* some devices, such as AVR will output all 1's instead of TDI
1017 input value at end of chain. */
1018 if ((idcode == 0x000000FF)||(idcode == 0xFFFFFFFF))
1019 {
1020 int unexpected=0;
1021 /* End of chain (invalid manufacturer ID)
1022 *
1023 * The JTAG examine is the very first thing that happens
1024 *
1025 * A single JTAG device requires only 64 bits to be read back correctly.
1026 *
1027 * The code below adds a check that the rest of the data scanned (640 bits)
1028 * are all as expected. This helps diagnose/catch problems with the JTAG chain
1029 *
1030 * earlier and gives more helpful/explicit error messages.
1031 */
1032 for (bit_count += 32; bit_count < (JTAG_MAX_CHAIN_SIZE * 32) - 31;bit_count += 32)
1033 {
1034 idcode = buf_get_u32(idcode_buffer, bit_count, 32);
1035 if (unexpected||((idcode != 0x000000FF)&&(idcode != 0xFFFFFFFF)))
1036 {
1037 LOG_WARNING("Unexpected idcode after end of chain! %d 0x%08x", bit_count, idcode);
1038 unexpected = 1;
1039 }
1040 }
1041
1042 break;
1043 }
1044
1045 manufacturer = EXTRACT_MFG(idcode);
1046 part = EXTRACT_PART(idcode);
1047 version = EXTRACT_VER(idcode);
1048
1049 LOG_INFO("JTAG tap: %s tap/device found: 0x%8.8x (Manufacturer: 0x%3.3x, Part: 0x%4.4x, Version: 0x%1.1x)",
1050 ((tap != NULL) ? (tap->dotted_name) : "(not-named)"),
1051 idcode, manufacturer, part, version);
1052
1053 bit_count += 32;
1054 }
1055 device_count++;
1056 if (!tap)
1057 continue;
1058
1059 tap->idcode = idcode;
1060
1061 if (0 == tap->expected_ids_cnt)
1062 {
1063 // @todo Enable LOG_INFO to ask for reports about unknown TAP IDs.
1064 #if 0
1065 LOG_INFO("Uknown JTAG TAP ID: 0x%08x", tap->idcode)
1066 LOG_INFO("Please report the chip name and reported ID code to the openocd project");
1067 #endif
1068 tap = jtag_tap_next_enabled(tap);
1069 continue;
1070 }
1071 /* Loop over the expected identification codes and test for a match */
1072 u8 ii;
1073 for (ii = 0; ii < tap->expected_ids_cnt; ii++) {
1074 if (tap->idcode == tap->expected_ids[ii]) {
1075 break;
1076 }
1077 }
1078
1079 /* If none of the expected ids matched, log an error */
1080 if (ii != tap->expected_ids_cnt)
1081 {
1082 LOG_INFO("JTAG Tap/device matched");
1083 tap = jtag_tap_next_enabled(tap);
1084 continue;
1085 }
1086 LOG_ERROR("JTAG tap: %s got: 0x%08x (mfg: 0x%3.3x, part: 0x%4.4x, ver: 0x%1.1x)",
1087 tap->dotted_name,
1088 idcode,
1089 EXTRACT_MFG( tap->idcode ),
1090 EXTRACT_PART( tap->idcode ),
1091 EXTRACT_VER( tap->idcode ) );
1092 for (ii = 0; ii < tap->expected_ids_cnt; ii++) {
1093 LOG_ERROR("JTAG tap: %s expected %hhu of %hhu: 0x%08x (mfg: 0x%3.3x, part: 0x%4.4x, ver: 0x%1.1x)",
1094 tap->dotted_name,
1095 ii + 1,
1096 tap->expected_ids_cnt,
1097 tap->expected_ids[ii],
1098 EXTRACT_MFG( tap->expected_ids[ii] ),
1099 EXTRACT_PART( tap->expected_ids[ii] ),
1100 EXTRACT_VER( tap->expected_ids[ii] ) );
1101 }
1102 return ERROR_JTAG_INIT_FAILED;
1103 }
1104
1105 /* see if number of discovered devices matches configuration */
1106 if (device_count != jtag_tap_count_enabled())
1107 {
1108 LOG_ERROR("number of discovered devices in JTAG chain (%i) doesn't match (enabled) configuration (%i), total taps: %d",
1109 device_count, jtag_tap_count_enabled(), jtag_tap_count());
1110 LOG_ERROR("check the config file and ensure proper JTAG communication (connections, speed, ...)");
1111 return ERROR_JTAG_INIT_FAILED;
1112 }
1113
1114 return ERROR_OK;
1115 }
1116
1117 static int jtag_validate_chain(void)
1118 {
1119 jtag_tap_t *tap;
1120 int total_ir_length = 0;
1121 u8 *ir_test = NULL;
1122 scan_field_t field;
1123 int chain_pos = 0;
1124
1125 tap = NULL;
1126 total_ir_length = 0;
1127 for(;;){
1128 tap = jtag_tap_next_enabled(tap);
1129 if( tap == NULL ){
1130 break;
1131 }
1132 total_ir_length += tap->ir_length;
1133 }
1134
1135 total_ir_length += 2;
1136 ir_test = malloc(CEIL(total_ir_length, 8));
1137 buf_set_ones(ir_test, total_ir_length);
1138
1139 field.tap = NULL;
1140 field.num_bits = total_ir_length;
1141 field.out_value = ir_test;
1142 field.in_value = ir_test;
1143
1144
1145 jtag_add_plain_ir_scan(1, &field, TAP_RESET);
1146 jtag_execute_queue();
1147
1148 tap = NULL;
1149 chain_pos = 0;
1150 int val;
1151 for(;;){
1152 tap = jtag_tap_next_enabled(tap);
1153 if( tap == NULL ){
1154 break;
1155 }
1156
1157 val = buf_get_u32(ir_test, chain_pos, 2);
1158 if (val != 0x1)
1159 {
1160 char *cbuf = buf_to_str(ir_test, total_ir_length, 16);
1161 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);
1162 free(cbuf);
1163 free(ir_test);
1164 return ERROR_JTAG_INIT_FAILED;
1165 }
1166 chain_pos += tap->ir_length;
1167 }
1168
1169 val = buf_get_u32(ir_test, chain_pos, 2);
1170 if (val != 0x3)
1171 {
1172 char *cbuf = buf_to_str(ir_test, total_ir_length, 16);
1173 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);
1174 free(cbuf);
1175 free(ir_test);
1176 return ERROR_JTAG_INIT_FAILED;
1177 }
1178
1179 free(ir_test);
1180
1181 return ERROR_OK;
1182 }
1183
1184 enum jtag_tap_cfg_param {
1185 JCFG_EVENT
1186 };
1187
1188 static Jim_Nvp nvp_config_opts[] = {
1189 { .name = "-event", .value = JCFG_EVENT },
1190
1191 { .name = NULL, .value = -1 }
1192 };
1193
1194 static int jtag_tap_configure_cmd( Jim_GetOptInfo *goi, jtag_tap_t * tap)
1195 {
1196 Jim_Nvp *n;
1197 Jim_Obj *o;
1198 int e;
1199
1200 /* parse config or cget options */
1201 while (goi->argc > 0) {
1202 Jim_SetEmptyResult (goi->interp);
1203
1204 e = Jim_GetOpt_Nvp(goi, nvp_config_opts, &n);
1205 if (e != JIM_OK) {
1206 Jim_GetOpt_NvpUnknown(goi, nvp_config_opts, 0);
1207 return e;
1208 }
1209
1210 switch (n->value) {
1211 case JCFG_EVENT:
1212 if (goi->argc == 0) {
1213 Jim_WrongNumArgs( goi->interp, goi->argc, goi->argv, "-event ?event-name? ..." );
1214 return JIM_ERR;
1215 }
1216
1217 e = Jim_GetOpt_Nvp( goi, nvp_jtag_tap_event, &n );
1218 if (e != JIM_OK) {
1219 Jim_GetOpt_NvpUnknown(goi, nvp_jtag_tap_event, 1);
1220 return e;
1221 }
1222
1223 if (goi->isconfigure) {
1224 if (goi->argc != 1) {
1225 Jim_WrongNumArgs(goi->interp, goi->argc, goi->argv, "-event ?event-name? ?EVENT-BODY?");
1226 return JIM_ERR;
1227 }
1228 } else {
1229 if (goi->argc != 0) {
1230 Jim_WrongNumArgs(goi->interp, goi->argc, goi->argv, "-event ?event-name?");
1231 return JIM_ERR;
1232 }
1233 }
1234
1235 {
1236 jtag_tap_event_action_t *jteap;
1237
1238 jteap = tap->event_action;
1239 /* replace existing? */
1240 while (jteap) {
1241 if (jteap->event == (enum jtag_tap_event)n->value) {
1242 break;
1243 }
1244 jteap = jteap->next;
1245 }
1246
1247 if (goi->isconfigure) {
1248 if (jteap == NULL) {
1249 /* create new */
1250 jteap = calloc(1, sizeof (*jteap));
1251 }
1252 jteap->event = n->value;
1253 Jim_GetOpt_Obj( goi, &o);
1254 if (jteap->body) {
1255 Jim_DecrRefCount(interp, jteap->body);
1256 }
1257 jteap->body = Jim_DuplicateObj(goi->interp, o);
1258 Jim_IncrRefCount(jteap->body);
1259
1260 /* add to head of event list */
1261 jteap->next = tap->event_action;
1262 tap->event_action = jteap;
1263 Jim_SetEmptyResult(goi->interp);
1264 } else {
1265 /* get */
1266 if (jteap == NULL) {
1267 Jim_SetEmptyResult(goi->interp);
1268 } else {
1269 Jim_SetResult(goi->interp, Jim_DuplicateObj(goi->interp, jteap->body));
1270 }
1271 }
1272 }
1273 /* loop for more */
1274 break;
1275 }
1276 } /* while (goi->argc) */
1277
1278 return JIM_OK;
1279 }
1280
1281
1282 static void jtag_tap_init(jtag_tap_t *tap)
1283 {
1284 assert(0 != tap->ir_length);
1285
1286 tap->expected = malloc(tap->ir_length);
1287 tap->expected_mask = malloc(tap->ir_length);
1288 tap->cur_instr = malloc(tap->ir_length);
1289
1290 buf_set_u32(tap->expected, 0, tap->ir_length, tap->ir_capture_value);
1291 buf_set_u32(tap->expected_mask, 0, tap->ir_length, tap->ir_capture_mask);
1292 buf_set_ones(tap->cur_instr, tap->ir_length);
1293
1294 // place TAP in bypass mode
1295 tap->bypass = 1;
1296 // register the reset callback for the TAP
1297 jtag_register_event_callback(&jtag_reset_callback, tap);
1298
1299 LOG_DEBUG("Created Tap: %s @ abs position %d, "
1300 "irlen %d, capture: 0x%x mask: 0x%x", tap->dotted_name,
1301 tap->abs_chain_position, tap->ir_length,
1302 tap->ir_capture_value, tap->ir_capture_mask);
1303 jtag_tap_add(tap);
1304 }
1305
1306 static void jtag_tap_free(jtag_tap_t *tap)
1307 {
1308 /// @todo is anything missing? no memory leaks please
1309 free((void *)tap->expected_ids);
1310 free((void *)tap->chip);
1311 free((void *)tap->tapname);
1312 free((void *)tap->dotted_name);
1313 free(tap);
1314 }
1315
1316 static int jim_newtap_cmd( Jim_GetOptInfo *goi )
1317 {
1318 jtag_tap_t *pTap;
1319 jim_wide w;
1320 int x;
1321 int e;
1322 int reqbits;
1323 Jim_Nvp *n;
1324 char *cp;
1325 const Jim_Nvp opts[] = {
1326 #define NTAP_OPT_IRLEN 0
1327 { .name = "-irlen" , .value = NTAP_OPT_IRLEN },
1328 #define NTAP_OPT_IRMASK 1
1329 { .name = "-irmask" , .value = NTAP_OPT_IRMASK },
1330 #define NTAP_OPT_IRCAPTURE 2
1331 { .name = "-ircapture" , .value = NTAP_OPT_IRCAPTURE },
1332 #define NTAP_OPT_ENABLED 3
1333 { .name = "-enable" , .value = NTAP_OPT_ENABLED },
1334 #define NTAP_OPT_DISABLED 4
1335 { .name = "-disable" , .value = NTAP_OPT_DISABLED },
1336 #define NTAP_OPT_EXPECTED_ID 5
1337 { .name = "-expected-id" , .value = NTAP_OPT_EXPECTED_ID },
1338 { .name = NULL , .value = -1 },
1339 };
1340
1341 pTap = malloc( sizeof(jtag_tap_t) );
1342 memset( pTap, 0, sizeof(*pTap) );
1343 if( !pTap ){
1344 Jim_SetResult_sprintf( goi->interp, "no memory");
1345 return JIM_ERR;
1346 }
1347 /*
1348 * we expect CHIP + TAP + OPTIONS
1349 * */
1350 if( goi->argc < 3 ){
1351 Jim_SetResult_sprintf(goi->interp, "Missing CHIP TAP OPTIONS ....");
1352 return JIM_ERR;
1353 }
1354 Jim_GetOpt_String( goi, &cp, NULL );
1355 pTap->chip = strdup(cp);
1356
1357 Jim_GetOpt_String( goi, &cp, NULL );
1358 pTap->tapname = strdup(cp);
1359
1360 /* name + dot + name + null */
1361 x = strlen(pTap->chip) + 1 + strlen(pTap->tapname) + 1;
1362 cp = malloc( x );
1363 sprintf( cp, "%s.%s", pTap->chip, pTap->tapname );
1364 pTap->dotted_name = cp;
1365
1366 LOG_DEBUG("Creating New Tap, Chip: %s, Tap: %s, Dotted: %s, %d params",
1367 pTap->chip, pTap->tapname, pTap->dotted_name, goi->argc);
1368
1369 /* default is enabled */
1370 pTap->enabled = 1;
1371
1372 /* deal with options */
1373 #define NTREQ_IRLEN 1
1374 #define NTREQ_IRCAPTURE 2
1375 #define NTREQ_IRMASK 4
1376
1377 /* clear them as we find them */
1378 reqbits = (NTREQ_IRLEN | NTREQ_IRCAPTURE | NTREQ_IRMASK);
1379
1380 while( goi->argc ){
1381 e = Jim_GetOpt_Nvp( goi, opts, &n );
1382 if( e != JIM_OK ){
1383 Jim_GetOpt_NvpUnknown( goi, opts, 0 );
1384 return e;
1385 }
1386 LOG_DEBUG("Processing option: %s", n->name );
1387 switch( n->value ){
1388 case NTAP_OPT_ENABLED:
1389 pTap->enabled = 1;
1390 break;
1391 case NTAP_OPT_DISABLED:
1392 pTap->enabled = 0;
1393 break;
1394 case NTAP_OPT_EXPECTED_ID:
1395 {
1396 u32 *new_expected_ids;
1397
1398 e = Jim_GetOpt_Wide( goi, &w );
1399 if( e != JIM_OK) {
1400 Jim_SetResult_sprintf(goi->interp, "option: %s bad parameter", n->name);
1401 return e;
1402 }
1403
1404 new_expected_ids = malloc(sizeof(u32) * (pTap->expected_ids_cnt + 1));
1405 if (new_expected_ids == NULL) {
1406 Jim_SetResult_sprintf( goi->interp, "no memory");
1407 return JIM_ERR;
1408 }
1409
1410 memcpy(new_expected_ids, pTap->expected_ids, sizeof(u32) * pTap->expected_ids_cnt);
1411
1412 new_expected_ids[pTap->expected_ids_cnt] = w;
1413
1414 free(pTap->expected_ids);
1415 pTap->expected_ids = new_expected_ids;
1416 pTap->expected_ids_cnt++;
1417 break;
1418 }
1419 case NTAP_OPT_IRLEN:
1420 case NTAP_OPT_IRMASK:
1421 case NTAP_OPT_IRCAPTURE:
1422 e = Jim_GetOpt_Wide( goi, &w );
1423 if( e != JIM_OK ){
1424 Jim_SetResult_sprintf( goi->interp, "option: %s bad parameter", n->name );
1425 return e;
1426 }
1427 if( (w < 0) || (w > 0xffff) ){
1428 /* wacky value */
1429 Jim_SetResult_sprintf( goi->interp, "option: %s - wacky value: %d (0x%x)",
1430 n->name, (int)(w), (int)(w));
1431 return JIM_ERR;
1432 }
1433 switch(n->value){
1434 case NTAP_OPT_IRLEN:
1435 pTap->ir_length = w;
1436 reqbits &= (~(NTREQ_IRLEN));
1437 break;
1438 case NTAP_OPT_IRMASK:
1439 pTap->ir_capture_mask = w;
1440 reqbits &= (~(NTREQ_IRMASK));
1441 break;
1442 case NTAP_OPT_IRCAPTURE:
1443 pTap->ir_capture_value = w;
1444 reqbits &= (~(NTREQ_IRCAPTURE));
1445 break;
1446 }
1447 } /* switch(n->value) */
1448 } /* while( goi->argc ) */
1449
1450 /* Did all the required option bits get cleared? */
1451 if (0 == reqbits)
1452 {
1453 jtag_tap_init(pTap);
1454 return ERROR_OK;
1455 }
1456
1457 Jim_SetResult_sprintf(goi->interp,
1458 "newtap: %s missing required parameters",
1459 pTap->dotted_name);
1460 jtag_tap_free(pTap);
1461 return JIM_ERR;
1462 }
1463
1464 static int jim_jtag_command( Jim_Interp *interp, int argc, Jim_Obj *const *argv )
1465 {
1466 Jim_GetOptInfo goi;
1467 int e;
1468 Jim_Nvp *n;
1469 Jim_Obj *o;
1470 struct command_context_s *context;
1471
1472 enum {
1473 JTAG_CMD_INTERFACE,
1474 JTAG_CMD_INIT_RESET,
1475 JTAG_CMD_NEWTAP,
1476 JTAG_CMD_TAPENABLE,
1477 JTAG_CMD_TAPDISABLE,
1478 JTAG_CMD_TAPISENABLED,
1479 JTAG_CMD_CONFIGURE,
1480 JTAG_CMD_CGET
1481 };
1482
1483 const Jim_Nvp jtag_cmds[] = {
1484 { .name = "interface" , .value = JTAG_CMD_INTERFACE },
1485 { .name = "arp_init-reset", .value = JTAG_CMD_INIT_RESET },
1486 { .name = "newtap" , .value = JTAG_CMD_NEWTAP },
1487 { .name = "tapisenabled" , .value = JTAG_CMD_TAPISENABLED },
1488 { .name = "tapenable" , .value = JTAG_CMD_TAPENABLE },
1489 { .name = "tapdisable" , .value = JTAG_CMD_TAPDISABLE },
1490 { .name = "configure" , .value = JTAG_CMD_CONFIGURE },
1491 { .name = "cget" , .value = JTAG_CMD_CGET },
1492
1493 { .name = NULL, .value = -1 },
1494 };
1495
1496 context = Jim_GetAssocData(interp, "context");
1497 /* go past the command */
1498 Jim_GetOpt_Setup( &goi, interp, argc-1, argv+1 );
1499
1500 e = Jim_GetOpt_Nvp( &goi, jtag_cmds, &n );
1501 if( e != JIM_OK ){
1502 Jim_GetOpt_NvpUnknown( &goi, jtag_cmds, 0 );
1503 return e;
1504 }
1505 Jim_SetEmptyResult( goi.interp );
1506 switch( n->value ){
1507 case JTAG_CMD_INTERFACE:
1508 /* return the name of the interface */
1509 /* TCL code might need to know the exact type... */
1510 /* FUTURE: we allow this as a means to "set" the interface. */
1511 if( goi.argc != 0 ){
1512 Jim_WrongNumArgs( goi.interp, 1, goi.argv-1, "(no params)");
1513 return JIM_ERR;
1514 }
1515 Jim_SetResultString( goi.interp, jtag_interface->name, -1 );
1516 return JIM_OK;
1517 case JTAG_CMD_INIT_RESET:
1518 if( goi.argc != 0 ){
1519 Jim_WrongNumArgs( goi.interp, 1, goi.argv-1, "(no params)");
1520 return JIM_ERR;
1521 }
1522 e = jtag_init_reset(context);
1523 if( e != ERROR_OK ){
1524 Jim_SetResult_sprintf( goi.interp, "error: %d", e);
1525 return JIM_ERR;
1526 }
1527 return JIM_OK;
1528 case JTAG_CMD_NEWTAP:
1529 return jim_newtap_cmd( &goi );
1530 break;
1531 case JTAG_CMD_TAPISENABLED:
1532 case JTAG_CMD_TAPENABLE:
1533 case JTAG_CMD_TAPDISABLE:
1534 if( goi.argc != 1 ){
1535 Jim_SetResultString( goi.interp, "Too many parameters",-1 );
1536 return JIM_ERR;
1537 }
1538
1539 {
1540 jtag_tap_t *t;
1541 t = jtag_tap_by_jim_obj( goi.interp, goi.argv[0] );
1542 if( t == NULL ){
1543 return JIM_ERR;
1544 }
1545 switch( n->value ){
1546 case JTAG_CMD_TAPISENABLED:
1547 e = t->enabled;
1548 break;
1549 case JTAG_CMD_TAPENABLE:
1550 jtag_tap_handle_event( t, JTAG_TAP_EVENT_ENABLE);
1551 e = 1;
1552 t->enabled = e;
1553 break;
1554 case JTAG_CMD_TAPDISABLE:
1555 jtag_tap_handle_event( t, JTAG_TAP_EVENT_DISABLE);
1556 e = 0;
1557 t->enabled = e;
1558 break;
1559 }
1560 Jim_SetResult( goi.interp, Jim_NewIntObj( goi.interp, e ) );
1561 return JIM_OK;
1562 }
1563 break;
1564
1565 case JTAG_CMD_CGET:
1566 if( goi.argc < 2 ){
1567 Jim_WrongNumArgs( goi.interp, 0, NULL, "?tap-name? -option ...");
1568 return JIM_ERR;
1569 }
1570
1571 {
1572 jtag_tap_t *t;
1573
1574 Jim_GetOpt_Obj(&goi, &o);
1575 t = jtag_tap_by_jim_obj( goi.interp, o );
1576 if( t == NULL ){
1577 return JIM_ERR;
1578 }
1579
1580 goi.isconfigure = 0;
1581 return jtag_tap_configure_cmd( &goi, t);
1582 }
1583 break;
1584
1585 case JTAG_CMD_CONFIGURE:
1586 if( goi.argc < 3 ){
1587 Jim_WrongNumArgs( goi.interp, 0, NULL, "?tap-name? -option ?VALUE? ...");
1588 return JIM_ERR;
1589 }
1590
1591 {
1592 jtag_tap_t *t;
1593
1594 Jim_GetOpt_Obj(&goi, &o);
1595 t = jtag_tap_by_jim_obj( goi.interp, o );
1596 if( t == NULL ){
1597 return JIM_ERR;
1598 }
1599
1600 goi.isconfigure = 1;
1601 return jtag_tap_configure_cmd( &goi, t);
1602 }
1603 }
1604
1605 return JIM_ERR;
1606 }
1607
1608 int jtag_register_commands(struct command_context_s *cmd_ctx)
1609 {
1610 register_jim( cmd_ctx, "jtag", jim_jtag_command, "perform jtag tap actions");
1611
1612 register_command(cmd_ctx, NULL, "interface", handle_interface_command,
1613 COMMAND_CONFIG, "try to configure interface");
1614 register_command(cmd_ctx, NULL, "jtag_speed", handle_jtag_speed_command,
1615 COMMAND_ANY, "(DEPRECATED) set jtag speed (if supported)");
1616 register_command(cmd_ctx, NULL, "jtag_khz", handle_jtag_khz_command,
1617 COMMAND_ANY, "set maximum jtag speed (if supported); "
1618 "parameter is maximum khz, or 0 for adaptive clocking (RTCK).");
1619 register_command(cmd_ctx, NULL, "jtag_device", handle_jtag_device_command,
1620 COMMAND_CONFIG, "(DEPRECATED) jtag_device <ir_length> <ir_expected> <ir_mask>");
1621 register_command(cmd_ctx, NULL, "reset_config", handle_reset_config_command,
1622 COMMAND_ANY,
1623 "[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]");
1624 register_command(cmd_ctx, NULL, "jtag_nsrst_delay", handle_jtag_nsrst_delay_command,
1625 COMMAND_ANY, "jtag_nsrst_delay <ms> - delay after deasserting srst in ms");
1626 register_command(cmd_ctx, NULL, "jtag_ntrst_delay", handle_jtag_ntrst_delay_command,
1627 COMMAND_ANY, "jtag_ntrst_delay <ms> - delay after deasserting trst in ms");
1628
1629 register_command(cmd_ctx, NULL, "scan_chain", handle_scan_chain_command,
1630 COMMAND_EXEC, "print current scan chain configuration");
1631
1632 register_command(cmd_ctx, NULL, "endstate", handle_endstate_command,
1633 COMMAND_EXEC, "finish JTAG operations in <tap_state>");
1634 register_command(cmd_ctx, NULL, "jtag_reset", handle_jtag_reset_command,
1635 COMMAND_EXEC, "toggle reset lines <trst> <srst>");
1636 register_command(cmd_ctx, NULL, "runtest", handle_runtest_command,
1637 COMMAND_EXEC, "move to Run-Test/Idle, and execute <num_cycles>");
1638 register_command(cmd_ctx, NULL, "irscan", handle_irscan_command,
1639 COMMAND_EXEC, "execute IR scan <device> <instr> [dev2] [instr2] ...");
1640 register_jim(cmd_ctx, "drscan", Jim_Command_drscan, "execute DR scan <device> <num_bits> <value> <num_bits1> <value2> ...");
1641 register_jim(cmd_ctx, "flush_count", Jim_Command_flush_count, "returns number of times the JTAG queue has been flushed");
1642
1643 register_command(cmd_ctx, NULL, "verify_ircapture", handle_verify_ircapture_command,
1644 COMMAND_ANY, "verify value captured during Capture-IR <enable|disable>");
1645 register_command(cmd_ctx, NULL, "verify_jtag", handle_verify_jtag_command,
1646 COMMAND_ANY, "verify value capture <enable|disable>");
1647 register_command(cmd_ctx, NULL, "tms_sequence", handle_tms_sequence_command,
1648 COMMAND_ANY, "choose short(default) or long tms_sequence <short|long>");
1649 return ERROR_OK;
1650 }
1651
1652 int jtag_interface_init(struct command_context_s *cmd_ctx)
1653 {
1654 if (jtag)
1655 return ERROR_OK;
1656
1657 if (!jtag_interface)
1658 {
1659 /* nothing was previously specified by "interface" command */
1660 LOG_ERROR("JTAG interface has to be specified, see \"interface\" command");
1661 return ERROR_JTAG_INVALID_INTERFACE;
1662 }
1663 if(hasKHz)
1664 {
1665 jtag_interface->khz(jtag_get_speed_khz(), &jtag_speed);
1666 hasKHz = false;
1667 }
1668
1669 if (jtag_interface->init() != ERROR_OK)
1670 return ERROR_JTAG_INIT_FAILED;
1671
1672 jtag = jtag_interface;
1673 return ERROR_OK;
1674 }
1675
1676 static int jtag_init_inner(struct command_context_s *cmd_ctx)
1677 {
1678 jtag_tap_t *tap;
1679 int retval;
1680
1681 LOG_DEBUG("Init JTAG chain");
1682
1683 tap = jtag_tap_next_enabled(NULL);
1684 if( tap == NULL ){
1685 LOG_ERROR("There are no enabled taps?");
1686 return ERROR_JTAG_INIT_FAILED;
1687 }
1688
1689 jtag_add_tlr();
1690 if ((retval=jtag_execute_queue())!=ERROR_OK)
1691 return retval;
1692
1693 /* examine chain first, as this could discover the real chain layout */
1694 if (jtag_examine_chain() != ERROR_OK)
1695 {
1696 LOG_ERROR("trying to validate configured JTAG chain anyway...");
1697 }
1698
1699 if (jtag_validate_chain() != ERROR_OK)
1700 {
1701 LOG_WARNING("Could not validate JTAG chain, continuing anyway...");
1702 }
1703
1704 return ERROR_OK;
1705 }
1706
1707 int jtag_interface_quit(void)
1708 {
1709 if (!jtag || !jtag->quit)
1710 return ERROR_OK;
1711
1712 // close the JTAG interface
1713 int result = jtag->quit();
1714 if (ERROR_OK != result)
1715 LOG_ERROR("failed: %d", result);
1716
1717 return ERROR_OK;
1718 }
1719
1720
1721 int jtag_init_reset(struct command_context_s *cmd_ctx)
1722 {
1723 int retval;
1724
1725 if ((retval=jtag_interface_init(cmd_ctx)) != ERROR_OK)
1726 return retval;
1727
1728 LOG_DEBUG("Trying to bring the JTAG controller to life by asserting TRST / RESET");
1729
1730 /* Reset can happen after a power cycle.
1731 *
1732 * Ideally we would only assert TRST or run RESET before the target reset.
1733 *
1734 * However w/srst_pulls_trst, trst is asserted together with the target
1735 * reset whether we want it or not.
1736 *
1737 * NB! Some targets have JTAG circuitry disabled until a
1738 * trst & srst has been asserted.
1739 *
1740 * NB! here we assume nsrst/ntrst delay are sufficient!
1741 *
1742 * NB! order matters!!!! srst *can* disconnect JTAG circuitry
1743 *
1744 */
1745 jtag_add_reset(1, 0); /* RESET or TRST */
1746 if (jtag_reset_config & RESET_HAS_SRST)
1747 {
1748 jtag_add_reset(1, 1);
1749 if ((jtag_reset_config & RESET_SRST_PULLS_TRST)==0)
1750 jtag_add_reset(0, 1);
1751 }
1752 jtag_add_reset(0, 0);
1753 if ((retval = jtag_execute_queue()) != ERROR_OK)
1754 return retval;
1755
1756 /* Check that we can communication on the JTAG chain + eventually we want to
1757 * be able to perform enumeration only after OpenOCD has started
1758 * telnet and GDB server
1759 *
1760 * That would allow users to more easily perform any magic they need to before
1761 * reset happens.
1762 */
1763 return jtag_init_inner(cmd_ctx);
1764 }
1765
1766 int jtag_init(struct command_context_s *cmd_ctx)
1767 {
1768 int retval;
1769 if ((retval=jtag_interface_init(cmd_ctx)) != ERROR_OK)
1770 return retval;
1771 if (jtag_init_inner(cmd_ctx)==ERROR_OK)
1772 {
1773 return ERROR_OK;
1774 }
1775 return jtag_init_reset(cmd_ctx);
1776 }
1777
1778 void jtag_set_speed_khz(unsigned khz)
1779 {
1780 speed_khz = khz;
1781 }
1782 unsigned jtag_get_speed_khz(void)
1783 {
1784 return speed_khz;
1785 }
1786
1787 static int default_khz(int khz, int *jtag_speed)
1788 {
1789 LOG_ERROR("Translation from khz to jtag_speed not implemented");
1790 return ERROR_FAIL;
1791 }
1792
1793 static int default_speed_div(int speed, int *khz)
1794 {
1795 LOG_ERROR("Translation from jtag_speed to khz not implemented");
1796 return ERROR_FAIL;
1797 }
1798
1799 static int default_power_dropout(int *dropout)
1800 {
1801 *dropout=0; /* by default we can't detect power dropout */
1802 return ERROR_OK;
1803 }
1804
1805 static int default_srst_asserted(int *srst_asserted)
1806 {
1807 *srst_asserted=0; /* by default we can't detect srst asserted */
1808 return ERROR_OK;
1809 }
1810
1811 static int handle_interface_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1812 {
1813 int i;
1814 int retval;
1815
1816 /* check whether the interface is already configured */
1817 if (jtag_interface)
1818 {
1819 LOG_WARNING("Interface already configured, ignoring");
1820 return ERROR_OK;
1821 }
1822
1823 /* interface name is a mandatory argument */
1824 if (argc < 1 || args[0][0] == '\0')
1825 {
1826 return ERROR_COMMAND_SYNTAX_ERROR;
1827 }
1828
1829 for (i=0; jtag_interfaces[i]; i++)
1830 {
1831 if (strcmp(args[0], jtag_interfaces[i]->name) == 0)
1832 {
1833 if ((retval = jtag_interfaces[i]->register_commands(cmd_ctx)) != ERROR_OK)
1834 {
1835 return retval;
1836 }
1837
1838 jtag_interface = jtag_interfaces[i];
1839
1840 if (jtag_interface->khz == NULL)
1841 {
1842 jtag_interface->khz = default_khz;
1843 }
1844 if (jtag_interface->speed_div == NULL)
1845 {
1846 jtag_interface->speed_div = default_speed_div;
1847 }
1848 if (jtag_interface->power_dropout == NULL)
1849 {
1850 jtag_interface->power_dropout = default_power_dropout;
1851 }
1852 if (jtag_interface->srst_asserted == NULL)
1853 {
1854 jtag_interface->srst_asserted = default_srst_asserted;
1855 }
1856
1857 return ERROR_OK;
1858 }
1859 }
1860
1861 /* no valid interface was found (i.e. the configuration option,
1862 * didn't match one of the compiled-in interfaces
1863 */
1864 LOG_ERROR("No valid jtag interface found (%s)", args[0]);
1865 LOG_ERROR("compiled-in jtag interfaces:");
1866 for (i = 0; jtag_interfaces[i]; i++)
1867 {
1868 LOG_ERROR("%i: %s", i, jtag_interfaces[i]->name);
1869 }
1870
1871 return ERROR_JTAG_INVALID_INTERFACE;
1872 }
1873
1874 static int handle_jtag_device_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1875 {
1876 int e;
1877 char buf[1024];
1878 Jim_Obj *newargs[ 10 ];
1879 /*
1880 * CONVERT SYNTAX
1881 * argv[-1] = command
1882 * argv[ 0] = ir length
1883 * argv[ 1] = ir capture
1884 * argv[ 2] = ir mask
1885 * argv[ 3] = not actually used by anything but in the docs
1886 */
1887
1888 if( argc < 4 ){
1889 command_print( cmd_ctx, "OLD DEPRECATED SYNTAX: Please use the NEW syntax");
1890 return ERROR_OK;
1891 }
1892 command_print( cmd_ctx, "OLD SYNTAX: DEPRECATED - translating to new syntax");
1893 command_print( cmd_ctx, "jtag newtap CHIP TAP -irlen %s -ircapture %s -irvalue %s",
1894 args[0],
1895 args[1],
1896 args[2] );
1897 command_print( cmd_ctx, "Example: STM32 has 2 taps, the cortexM3(len4) + boundaryscan(len5)");
1898 command_print( cmd_ctx, "jtag newtap stm32 cortexm3 ....., thus creating the tap: \"stm32.cortexm3\"");
1899 command_print( cmd_ctx, "jtag newtap stm32 boundary ....., and the tap: \"stm32.boundary\"");
1900 command_print( cmd_ctx, "And then refer to the taps by the dotted name.");
1901
1902 newargs[0] = Jim_NewStringObj( interp, "jtag", -1 );
1903 newargs[1] = Jim_NewStringObj( interp, "newtap", -1 );
1904 sprintf( buf, "chip%d", jtag_tap_count() );
1905 newargs[2] = Jim_NewStringObj( interp, buf, -1 );
1906 sprintf( buf, "tap%d", jtag_tap_count() );
1907 newargs[3] = Jim_NewStringObj( interp, buf, -1 );
1908 newargs[4] = Jim_NewStringObj( interp, "-irlen", -1 );
1909 newargs[5] = Jim_NewStringObj( interp, args[0], -1 );
1910 newargs[6] = Jim_NewStringObj( interp, "-ircapture", -1 );
1911 newargs[7] = Jim_NewStringObj( interp, args[1], -1 );
1912 newargs[8] = Jim_NewStringObj( interp, "-irmask", -1 );
1913 newargs[9] = Jim_NewStringObj( interp, args[2], -1 );
1914
1915 command_print( cmd_ctx, "NEW COMMAND:");
1916 sprintf( buf, "%s %s %s %s %s %s %s %s %s %s",
1917 Jim_GetString( newargs[0], NULL ),
1918 Jim_GetString( newargs[1], NULL ),
1919 Jim_GetString( newargs[2], NULL ),
1920 Jim_GetString( newargs[3], NULL ),
1921 Jim_GetString( newargs[4], NULL ),
1922 Jim_GetString( newargs[5], NULL ),
1923 Jim_GetString( newargs[6], NULL ),
1924 Jim_GetString( newargs[7], NULL ),
1925 Jim_GetString( newargs[8], NULL ),
1926 Jim_GetString( newargs[9], NULL ) );
1927
1928 e = jim_jtag_command( interp, 10, newargs );
1929 if( e != JIM_OK ){
1930 command_print( cmd_ctx, "%s", Jim_GetString( Jim_GetResult(interp), NULL ) );
1931 }
1932 return e;
1933 }
1934
1935 static int handle_scan_chain_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1936 {
1937 jtag_tap_t *tap;
1938
1939 tap = jtag_all_taps();
1940 command_print(cmd_ctx, " TapName | Enabled | IdCode Expected IrLen IrCap IrMask Instr ");
1941 command_print(cmd_ctx, "---|--------------------|---------|------------|------------|------|------|------|---------");
1942
1943 while( tap ){
1944 u32 expected, expected_mask, cur_instr, ii;
1945 expected = buf_get_u32(tap->expected, 0, tap->ir_length);
1946 expected_mask = buf_get_u32(tap->expected_mask, 0, tap->ir_length);
1947 cur_instr = buf_get_u32(tap->cur_instr, 0, tap->ir_length);
1948
1949 command_print(cmd_ctx,
1950 "%2d | %-18s | %c | 0x%08x | 0x%08x | 0x%02x | 0x%02x | 0x%02x | 0x%02x",
1951 tap->abs_chain_position,
1952 tap->dotted_name,
1953 tap->enabled ? 'Y' : 'n',
1954 tap->idcode,
1955 (tap->expected_ids_cnt > 0 ? tap->expected_ids[0] : 0),
1956 tap->ir_length,
1957 expected,
1958 expected_mask,
1959 cur_instr);
1960
1961 for (ii = 1; ii < tap->expected_ids_cnt; ii++) {
1962 command_print(cmd_ctx, " | | | | 0x%08x | | | | ",
1963 tap->expected_ids[ii]);
1964 }
1965
1966 tap = tap->next_tap;
1967 }
1968
1969 return ERROR_OK;
1970 }
1971
1972 static int handle_reset_config_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1973 {
1974 int new_cfg = 0;
1975 int mask = 0;
1976
1977 if (argc < 1)
1978 return ERROR_COMMAND_SYNTAX_ERROR;
1979
1980 /* Original versions cared about the order of these tokens:
1981 * reset_config signals [combination [trst_type [srst_type]]]
1982 * They also clobbered the previous configuration even on error.
1983 *
1984 * Here we don't care about the order, and only change values
1985 * which have been explicitly specified.
1986 */
1987 for (; argc; argc--, args++) {
1988 int tmp = 0;
1989 int m;
1990
1991 /* signals */
1992 m = RESET_HAS_TRST | RESET_HAS_SRST;
1993 if (strcmp(*args, "none") == 0)
1994 tmp = RESET_NONE;
1995 else if (strcmp(*args, "trst_only") == 0)
1996 tmp = RESET_HAS_TRST;
1997 else if (strcmp(*args, "srst_only") == 0)
1998 tmp = RESET_HAS_SRST;
1999 else if (strcmp(*args, "trst_and_srst") == 0)
2000 tmp = RESET_HAS_TRST | RESET_HAS_SRST;
2001 else
2002 m = 0;
2003 if (mask & m) {
2004 LOG_ERROR("extra reset_config %s spec (%s)",
2005 "signal", *args);
2006 return ERROR_INVALID_ARGUMENTS;
2007 }
2008 if (m)
2009 goto next;
2010
2011 /* combination (options for broken wiring) */
2012 m = RESET_SRST_PULLS_TRST | RESET_TRST_PULLS_SRST;
2013 if (strcmp(*args, "separate") == 0)
2014 /* separate reset lines - default */;
2015 else if (strcmp(*args, "srst_pulls_trst") == 0)
2016 tmp |= RESET_SRST_PULLS_TRST;
2017 else if (strcmp(*args, "trst_pulls_srst") == 0)
2018 tmp |= RESET_TRST_PULLS_SRST;
2019 else if (strcmp(*args, "combined") == 0)
2020 tmp |= RESET_SRST_PULLS_TRST | RESET_TRST_PULLS_SRST;
2021 else
2022 m = 0;
2023 if (mask & m) {
2024 LOG_ERROR("extra reset_config %s spec (%s)",
2025 "combination", *args);
2026 return ERROR_INVALID_ARGUMENTS;
2027 }
2028 if (m)
2029 goto next;
2030
2031 /* trst_type (NOP without HAS_TRST) */
2032 m = RESET_TRST_OPEN_DRAIN;
2033 if (strcmp(*args, "trst_open_drain") == 0)
2034 tmp |= RESET_TRST_OPEN_DRAIN;
2035 else if (strcmp(*args, "trst_push_pull") == 0)
2036 /* push/pull from adapter - default */;
2037 else
2038 m = 0;
2039 if (mask & m) {
2040 LOG_ERROR("extra reset_config %s spec (%s)",
2041 "trst_type", *args);
2042 return ERROR_INVALID_ARGUMENTS;
2043 }
2044 if (m)
2045 goto next;
2046
2047 /* srst_type (NOP without HAS_SRST) */
2048 m |= RESET_SRST_PUSH_PULL;
2049 if (strcmp(*args, "srst_push_pull") == 0)
2050 tmp |= RESET_SRST_PUSH_PULL;
2051 else if (strcmp(*args, "srst_open_drain") == 0)
2052 /* open drain from adapter - default */;
2053 else
2054 m = 0;
2055 if (mask & m) {
2056 LOG_ERROR("extra reset_config %s spec (%s)",
2057 "srst_type", *args);
2058 return ERROR_INVALID_ARGUMENTS;
2059 }
2060 if (m)
2061 goto next;
2062
2063 /* caller provided nonsense; fail */
2064 LOG_ERROR("unknown reset_config flag (%s)", *args);
2065 return ERROR_INVALID_ARGUMENTS;
2066
2067 next:
2068 /* Remember the bits which were specified (mask)
2069 * and their new values (new_cfg).
2070 */
2071 mask |= m;
2072 new_cfg |= tmp;
2073 }
2074
2075 /* clear previous values of those bits, save new values */
2076 jtag_reset_config &= ~mask;
2077 jtag_reset_config |= new_cfg;
2078
2079 return ERROR_OK;
2080 }
2081
2082 static int handle_jtag_nsrst_delay_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2083 {
2084 if (argc < 1)
2085 {
2086 LOG_ERROR("jtag_nsrst_delay <ms> command takes one required argument");
2087 exit(-1);
2088 }
2089 else
2090 {
2091 jtag_set_nsrst_delay(strtoul(args[0], NULL, 0));
2092 }
2093
2094 return ERROR_OK;
2095 }
2096
2097 static int handle_jtag_ntrst_delay_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2098 {
2099 if (argc < 1)
2100 {
2101 LOG_ERROR("jtag_ntrst_delay <ms> command takes one required argument");
2102 exit(-1);
2103 }
2104 else
2105 {
2106 jtag_set_ntrst_delay(strtoul(args[0], NULL, 0));
2107 }
2108
2109 return ERROR_OK;
2110 }
2111
2112
2113 static int handle_jtag_speed_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2114 {
2115 int retval=ERROR_OK;
2116
2117 if (argc == 1)
2118 {
2119 LOG_DEBUG("handle jtag speed");
2120
2121 int cur_speed = 0;
2122 cur_speed = jtag_speed = strtoul(args[0], NULL, 0);
2123
2124 /* this command can be called during CONFIG,
2125 * in which case jtag isn't initialized */
2126 if (jtag)
2127 {
2128 retval=jtag->speed(cur_speed);
2129 }
2130 } else if (argc == 0)
2131 {
2132 } else
2133 {
2134 return ERROR_COMMAND_SYNTAX_ERROR;
2135 }
2136 command_print(cmd_ctx, "jtag_speed: %d", jtag_speed);
2137
2138 return retval;
2139 }
2140
2141 static int handle_jtag_khz_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2142 {
2143 int retval=ERROR_OK;
2144 LOG_DEBUG("handle jtag khz");
2145
2146 int cur_speed = 0;
2147 if(argc == 1)
2148 {
2149 jtag_set_speed_khz(strtoul(args[0], NULL, 0));
2150 if (jtag != NULL)
2151 {
2152 LOG_DEBUG("have interface set up");
2153 int speed_div1;
2154 if ((retval=jtag->khz(jtag_get_speed_khz(), &speed_div1))!=ERROR_OK)
2155 {
2156 jtag_set_speed_khz(0);
2157 return retval;
2158 }
2159
2160 cur_speed = jtag_speed = speed_div1;
2161
2162 retval=jtag->speed(cur_speed);
2163 } else
2164 {
2165 hasKHz = true;
2166 }
2167 } else if (argc==0)
2168 {
2169 } else
2170 {
2171 return ERROR_COMMAND_SYNTAX_ERROR;
2172 }
2173 cur_speed = jtag_get_speed_khz();
2174
2175 if (jtag!=NULL)
2176 {
2177 if ((retval=jtag->speed_div(jtag_speed, &cur_speed))!=ERROR_OK)
2178 return retval;
2179 }
2180
2181 if (cur_speed)
2182 command_print(cmd_ctx, "%d kHz", cur_speed);
2183 else
2184 command_print(cmd_ctx, "RCLK - adaptive");
2185 return retval;
2186
2187 }
2188
2189 static int handle_endstate_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2190 {
2191 if (argc < 1)
2192 return ERROR_COMMAND_SYNTAX_ERROR;
2193
2194 tap_state_t state = tap_state_by_name(args[0]);
2195 if (state < 0)
2196 {
2197 command_print( cmd_ctx, "Invalid state name: %s\n", args[0] );
2198 return ERROR_COMMAND_SYNTAX_ERROR;
2199 }
2200 jtag_set_end_state(state);
2201 jtag_execute_queue();
2202
2203 command_print(cmd_ctx, "current endstate: %s",
2204 tap_state_name(cmd_queue_end_state));
2205
2206 return ERROR_OK;
2207 }
2208
2209 static int handle_jtag_reset_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2210 {
2211 int trst = -1;
2212 int srst = -1;
2213
2214 if (argc < 2)
2215 {
2216 return ERROR_COMMAND_SYNTAX_ERROR;
2217 }
2218
2219 if (args[0][0] == '1')
2220 trst = 1;
2221 else if (args[0][0] == '0')
2222 trst = 0;
2223 else
2224 {
2225 return ERROR_COMMAND_SYNTAX_ERROR;
2226 }
2227
2228 if (args[1][0] == '1')
2229 srst = 1;
2230 else if (args[1][0] == '0')
2231 srst = 0;
2232 else
2233 {
2234 return ERROR_COMMAND_SYNTAX_ERROR;
2235 }
2236
2237 if (jtag_interface_init(cmd_ctx) != ERROR_OK)
2238 return ERROR_JTAG_INIT_FAILED;
2239
2240 jtag_add_reset(trst, srst);
2241 jtag_execute_queue();
2242
2243 return ERROR_OK;
2244 }
2245
2246 static int handle_runtest_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2247 {
2248 if (argc < 1)
2249 {
2250 return ERROR_COMMAND_SYNTAX_ERROR;
2251 }
2252
2253 jtag_add_runtest(strtol(args[0], NULL, 0), jtag_get_end_state());
2254 jtag_execute_queue();
2255
2256 return ERROR_OK;
2257
2258 }
2259
2260 /*
2261 * For "irscan" or "drscan" commands, the "end" (really, "next") state
2262 * should be stable ... and *NOT* a shift state, otherwise free-running
2263 * jtag clocks could change the values latched by the update state.
2264 */
2265 static bool scan_is_safe(tap_state_t state)
2266 {
2267 switch (state)
2268 {
2269 case TAP_RESET:
2270 case TAP_IDLE:
2271 case TAP_DRPAUSE:
2272 case TAP_IRPAUSE:
2273 return true;
2274 default:
2275 return false;
2276 }
2277 }
2278
2279
2280 static int handle_irscan_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2281 {
2282 int i;
2283 scan_field_t *fields;
2284 jtag_tap_t *tap;
2285 tap_state_t endstate;
2286
2287 if ((argc < 2) || (argc % 2))
2288 {
2289 return ERROR_COMMAND_SYNTAX_ERROR;
2290 }
2291
2292 /* optional "-endstate" "statename" at the end of the arguments,
2293 * so that e.g. IRPAUSE can let us load the data register before
2294 * entering RUN/IDLE to execute the instruction we load here.
2295 */
2296 endstate = TAP_IDLE;
2297
2298 if( argc >= 4 ){
2299 /* have at least one pair of numbers. */
2300 /* is last pair the magic text? */
2301 if( 0 == strcmp( "-endstate", args[ argc - 2 ] ) ){
2302 const char *cpA;
2303 const char *cpS;
2304 cpA = args[ argc-1 ];
2305 for( endstate = 0 ; endstate < TAP_NUM_STATES ; endstate++ ){
2306 cpS = tap_state_name( endstate );
2307 if( 0 == strcmp( cpA, cpS ) ){
2308 break;
2309 }
2310 }
2311 if( endstate >= TAP_NUM_STATES ){
2312 return ERROR_COMMAND_SYNTAX_ERROR;
2313 } else {
2314 if (!scan_is_safe(endstate))
2315 LOG_WARNING("irscan with unsafe "
2316 "endstate \"%s\"", cpA);
2317 /* found - remove the last 2 args */
2318 argc -= 2;
2319 }
2320 }
2321 }
2322
2323 int num_fields = argc / 2;
2324
2325 fields = malloc(sizeof(scan_field_t) * num_fields);
2326
2327 for (i = 0; i < num_fields; i++)
2328 {
2329 tap = jtag_tap_by_string( args[i*2] );
2330 if (tap==NULL)
2331 {
2332 command_print( cmd_ctx, "Tap: %s unknown", args[i*2] );
2333 return ERROR_FAIL;
2334 }
2335 int field_size = tap->ir_length;
2336 fields[i].tap = tap;
2337 fields[i].num_bits = field_size;
2338 fields[i].out_value = malloc(CEIL(field_size, 8));
2339 buf_set_u32(fields[i].out_value, 0, field_size, strtoul(args[i*2+1], NULL, 0));
2340 fields[i].in_value = NULL;
2341 }
2342
2343 /* did we have an endstate? */
2344 jtag_add_ir_scan(num_fields, fields, endstate);
2345
2346 int retval=jtag_execute_queue();
2347
2348 for (i = 0; i < num_fields; i++)
2349 free(fields[i].out_value);
2350
2351 free (fields);
2352
2353 return retval;
2354 }
2355
2356 static int Jim_Command_drscan(Jim_Interp *interp, int argc, Jim_Obj *const *args)
2357 {
2358 int retval;
2359 scan_field_t *fields;
2360 int num_fields;
2361 int field_count = 0;
2362 int i, e;
2363 jtag_tap_t *tap;
2364 tap_state_t endstate;
2365
2366 /* args[1] = device
2367 * args[2] = num_bits
2368 * args[3] = hex string
2369 * ... repeat num bits and hex string ...
2370 *
2371 * .. optionally:
2372 * args[N-2] = "-endstate"
2373 * args[N-1] = statename
2374 */
2375 if ((argc < 4) || ((argc % 2)!=0))
2376 {
2377 Jim_WrongNumArgs(interp, 1, args, "wrong arguments");
2378 return JIM_ERR;
2379 }
2380
2381 endstate = TAP_IDLE;
2382
2383 /* validate arguments as numbers */
2384 e = JIM_OK;
2385 for (i = 2; i < argc; i+=2)
2386 {
2387 long bits;
2388 const char *cp;
2389
2390 e = Jim_GetLong(interp, args[i], &bits);
2391 /* If valid - try next arg */
2392 if( e == JIM_OK ){
2393 continue;
2394 }
2395
2396 /* Not valid.. are we at the end? */
2397 if ( ((i+2) != argc) ){
2398 /* nope, then error */
2399 return e;
2400 }
2401
2402 /* it could be: "-endstate FOO"
2403 * e.g. DRPAUSE so we can issue more instructions
2404 * before entering RUN/IDLE and executing them.
2405 */
2406
2407 /* get arg as a string. */
2408 cp = Jim_GetString( args[i], NULL );
2409 /* is it the magic? */
2410 if( 0 == strcmp( "-endstate", cp ) ){
2411 /* is the statename valid? */
2412 cp = Jim_GetString( args[i+1], NULL );
2413
2414 /* see if it is a valid state name */
2415 endstate = tap_state_by_name(cp);
2416 if( endstate < 0 ){
2417 /* update the error message */
2418 Jim_SetResult_sprintf(interp,"endstate: %s invalid", cp );
2419 } else {
2420 if (!scan_is_safe(endstate))
2421 LOG_WARNING("drscan with unsafe "
2422 "endstate \"%s\"", cp);
2423
2424 /* valid - so clear the error */
2425 e = JIM_OK;
2426 /* and remove the last 2 args */
2427 argc -= 2;
2428 }
2429 }
2430
2431 /* Still an error? */
2432 if( e != JIM_OK ){
2433 return e; /* too bad */
2434 }
2435 } /* validate args */
2436
2437 tap = jtag_tap_by_jim_obj( interp, args[1] );
2438 if( tap == NULL ){
2439 return JIM_ERR;
2440 }
2441
2442 num_fields=(argc-2)/2;
2443 fields = malloc(sizeof(scan_field_t) * num_fields);
2444 for (i = 2; i < argc; i+=2)
2445 {
2446 long bits;
2447 int len;
2448 const char *str;
2449
2450 Jim_GetLong(interp, args[i], &bits);
2451 str = Jim_GetString(args[i+1], &len);
2452
2453 fields[field_count].tap = tap;
2454 fields[field_count].num_bits = bits;
2455 fields[field_count].out_value = malloc(CEIL(bits, 8));
2456 str_to_buf(str, len, fields[field_count].out_value, bits, 0);
2457 fields[field_count].in_value = fields[field_count].out_value;
2458 field_count++;
2459 }
2460
2461 jtag_add_dr_scan(num_fields, fields, endstate);
2462
2463 retval = jtag_execute_queue();
2464 if (retval != ERROR_OK)
2465 {
2466 Jim_SetResultString(interp, "drscan: jtag execute failed",-1);
2467 return JIM_ERR;
2468 }
2469
2470 field_count=0;
2471 Jim_Obj *list = Jim_NewListObj(interp, NULL, 0);
2472 for (i = 2; i < argc; i+=2)
2473 {
2474 long bits;
2475 char *str;
2476
2477 Jim_GetLong(interp, args[i], &bits);
2478 str = buf_to_str(fields[field_count].in_value, bits, 16);
2479 free(fields[field_count].out_value);
2480
2481 Jim_ListAppendElement(interp, list, Jim_NewStringObj(interp, str, strlen(str)));
2482 free(str);
2483 field_count++;
2484 }
2485
2486 Jim_SetResult(interp, list);
2487
2488 free(fields);
2489
2490 return JIM_OK;
2491 }
2492
2493
2494 static int Jim_Command_flush_count(Jim_Interp *interp, int argc, Jim_Obj *const *args)
2495 {
2496 Jim_SetResult(interp, Jim_NewIntObj(interp, jtag_get_flush_queue_count()));
2497
2498 return JIM_OK;
2499 }
2500
2501
2502 static int handle_verify_ircapture_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2503 {
2504 if (argc == 1)
2505 {
2506 if (strcmp(args[0], "enable") == 0)
2507 {
2508 jtag_verify_capture_ir = 1;
2509 }
2510 else if (strcmp(args[0], "disable") == 0)
2511 {
2512 jtag_verify_capture_ir = 0;
2513 } else
2514 {
2515 return ERROR_COMMAND_SYNTAX_ERROR;
2516 }
2517 } else if (argc != 0)
2518 {
2519 return ERROR_COMMAND_SYNTAX_ERROR;
2520 }
2521
2522 command_print(cmd_ctx, "verify Capture-IR is %s", (jtag_verify_capture_ir) ? "enabled": "disabled");
2523
2524 return ERROR_OK;
2525 }
2526
2527 void jtag_set_verify(bool enable)
2528 {
2529 jtag_verify = enable;
2530 }
2531
2532 bool jtag_will_verify()
2533 {
2534 return jtag_verify;
2535 }
2536
2537 static int handle_verify_jtag_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2538 {
2539 if (argc > 1)
2540 return ERROR_COMMAND_SYNTAX_ERROR;
2541
2542 if (argc == 1)
2543 {
2544 if (strcmp(args[0], "enable") == 0)
2545 jtag_set_verify(true);
2546 else if (strcmp(args[0], "disable") == 0)
2547 jtag_set_verify(false);
2548 else
2549 return ERROR_COMMAND_SYNTAX_ERROR;
2550 }
2551
2552 const char *status = jtag_will_verify() ? "enabled": "disabled";
2553 command_print(cmd_ctx, "verify jtag capture is %s", status);
2554
2555 return ERROR_OK;
2556 }
2557
2558
2559 int jtag_power_dropout(int *dropout)
2560 {
2561 return jtag->power_dropout(dropout);
2562 }
2563
2564 int jtag_srst_asserted(int *srst_asserted)
2565 {
2566 return jtag->srst_asserted(srst_asserted);
2567 }
2568
2569 void jtag_tap_handle_event( jtag_tap_t * tap, enum jtag_tap_event e)
2570 {
2571 jtag_tap_event_action_t * jteap;
2572 int done;
2573
2574 jteap = tap->event_action;
2575
2576 done = 0;
2577 while (jteap) {
2578 if (jteap->event == e) {
2579 done = 1;
2580 LOG_DEBUG( "JTAG tap: %s event: %d (%s) action: %s\n",
2581 tap->dotted_name,
2582 e,
2583 Jim_Nvp_value2name_simple(nvp_jtag_tap_event, e)->name,
2584 Jim_GetString(jteap->body, NULL) );
2585 if (Jim_EvalObj(interp, jteap->body) != JIM_OK) {
2586 Jim_PrintErrorMessage(interp);
2587 }
2588 }
2589
2590 jteap = jteap->next;
2591 }
2592
2593 if (!done) {
2594 LOG_DEBUG( "event %d %s - no action",
2595 e,
2596 Jim_Nvp_value2name_simple( nvp_jtag_tap_event, e)->name);
2597 }
2598 }
2599
2600 static int handle_tms_sequence_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2601 {
2602 if (argc > 1)
2603 return ERROR_COMMAND_SYNTAX_ERROR;
2604
2605 if (argc == 1)
2606 {
2607 bool use_new_table;
2608 if (strcmp(args[0], "short") == 0)
2609 use_new_table = true;
2610 else if (strcmp(args[0], "long") == 0)
2611 use_new_table = false;
2612 else
2613 return ERROR_COMMAND_SYNTAX_ERROR;
2614
2615 tap_use_new_tms_table(use_new_table);
2616 }
2617
2618 command_print(cmd_ctx, "tms sequence is %s",
2619 tap_uses_new_tms_table() ? "short": "long");
2620
2621 return ERROR_OK;
2622 }
2623
2624 /**
2625 * Function jtag_add_statemove
2626 * moves from the current state to the goal \a state. This needs
2627 * to be handled according to the xsvf spec, see the XSTATE command
2628 * description.
2629 */
2630 int jtag_add_statemove(tap_state_t goal_state)
2631 {
2632 int retval = ERROR_OK;
2633
2634 tap_state_t moves[8];
2635 tap_state_t cur_state = cmd_queue_cur_state;
2636 int i;
2637 int tms_bits;
2638 int tms_count;
2639
2640 LOG_DEBUG( "cur_state=%s goal_state=%s",
2641 tap_state_name(cur_state),
2642 tap_state_name(goal_state) );
2643
2644
2645 /* From the XSVF spec, pertaining to XSTATE:
2646
2647 For special states known as stable states (Test-Logic-Reset,
2648 Run-Test/Idle, Pause-DR, Pause- IR), an XSVF interpreter follows
2649 predefined TAP state paths when the starting state is a stable state and
2650 when the XSTATE specifies a new stable state (see the STATE command in
2651 the [Ref 5] for the TAP state paths between stable states). For
2652 non-stable states, XSTATE should specify a state that is only one TAP
2653 state transition distance from the current TAP state to avoid undefined
2654 TAP state paths. A sequence of multiple XSTATE commands can be issued to
2655 transition the TAP through a specific state path.
2656 */
2657
2658 if (goal_state==cur_state )
2659 ; /* nothing to do */
2660
2661 else if( goal_state==TAP_RESET )
2662 {
2663 jtag_add_tlr();
2664 }
2665
2666 else if( tap_is_state_stable(cur_state) && tap_is_state_stable(goal_state) )
2667 {
2668 /* note: unless tms_bits holds a path that agrees with [Ref 5] in above
2669 spec, then this code is not fully conformant to the xsvf spec. This
2670 puts a burden on tap_get_tms_path() function from the xsvf spec.
2671 If in doubt, you should confirm that that burden is being met.
2672 */
2673
2674 tms_bits = tap_get_tms_path(cur_state, goal_state);
2675 tms_count = tap_get_tms_path_len(cur_state, goal_state);
2676
2677 assert( (unsigned) tms_count < DIM(moves) );
2678
2679 for (i=0; i<tms_count; i++, tms_bits>>=1)
2680 {
2681 bool bit = tms_bits & 1;
2682
2683 cur_state = tap_state_transition(cur_state, bit);
2684 moves[i] = cur_state;
2685 }
2686
2687 jtag_add_pathmove(tms_count, moves);
2688 }
2689
2690 /* else state must be immediately reachable in one clock cycle, and does not
2691 need to be a stable state.
2692 */
2693 else if( tap_state_transition(cur_state, true) == goal_state
2694 || tap_state_transition(cur_state, false) == goal_state )
2695 {
2696 /* move a single state */
2697 moves[0] = goal_state;
2698 jtag_add_pathmove( 1, moves );
2699 }
2700
2701 else
2702 {
2703 retval = ERROR_FAIL;
2704 }
2705
2706 return retval;
2707 }
2708
2709 void jtag_set_nsrst_delay(unsigned delay)
2710 {
2711 jtag_nsrst_delay = delay;
2712 }
2713 void jtag_set_ntrst_delay(unsigned delay)
2714 {
2715 jtag_ntrst_delay = delay;
2716 }
2717
2718
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SSH host keys fingerprints

1024 SHA256:YKx8b7u5ZWdcbp7/4AeXNaqElP49m6QrwfXaqQGJAOk gerrit-code-review@openocd.zylin.com (DSA)
384 SHA256:jHIbSQa4REvwCFG4cq5LBlBLxmxSqelQPem/EXIrxjk gerrit-code-review@openocd.org (ECDSA)
521 SHA256:UAOPYkU9Fjtcao0Ul/Rrlnj/OsQvt+pgdYSZ4jOYdgs gerrit-code-review@openocd.org (ECDSA)
256 SHA256:A13M5QlnozFOvTllybRZH6vm7iSt0XLxbA48yfc2yfY gerrit-code-review@openocd.org (ECDSA)
256 SHA256:spYMBqEYoAOtK7yZBrcwE8ZpYt6b68Cfh9yEVetvbXg gerrit-code-review@openocd.org (ED25519)
+--[ED25519 256]--+
|=..              |
|+o..   .         |
|*.o   . .        |
|+B . . .         |
|Bo. = o S        |
|Oo.+ + =         |
|oB=.* = . o      |
| =+=.+   + E     |
|. .=o   . o      |
+----[SHA256]-----+
2048 SHA256:0Onrb7/PHjpo6iVZ7xQX2riKN83FJ3KGU0TvI0TaFG4 gerrit-code-review@openocd.zylin.com (RSA)