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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 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 /* Try to examine chain layout according to IEEE 1149.1 §12
999 */
1000 static int jtag_examine_chain(void)
1001 {
1002 jtag_tap_t *tap;
1003 u8 idcode_buffer[JTAG_MAX_CHAIN_SIZE * 4];
1004 int bit_count;
1005 int device_count = 0;
1006
1007 jtag_examine_chain_execute(idcode_buffer, JTAG_MAX_CHAIN_SIZE);
1008
1009 if (!jtag_examine_chain_check(idcode_buffer, JTAG_MAX_CHAIN_SIZE))
1010 return ERROR_JTAG_INIT_FAILED;
1011
1012 /* point at the 1st tap */
1013 tap = jtag_tap_next_enabled(NULL);
1014 if( tap == NULL ){
1015 LOG_ERROR("JTAG: No taps enabled?");
1016 return ERROR_JTAG_INIT_FAILED;
1017 }
1018
1019 for (bit_count = 0; bit_count < (JTAG_MAX_CHAIN_SIZE * 32) - 31;)
1020 {
1021 u32 idcode = buf_get_u32(idcode_buffer, bit_count, 32);
1022 if ((idcode & 1) == 0)
1023 {
1024 /* LSB must not be 0, this indicates a device in bypass */
1025 LOG_WARNING("Tap/Device does not have IDCODE");
1026 idcode=0;
1027
1028 bit_count += 1;
1029 }
1030 else
1031 {
1032 /* some devices, such as AVR will output all 1's instead of TDI
1033 input value at end of chain. */
1034 if ((idcode == 0x000000FF)||(idcode == 0xFFFFFFFF))
1035 {
1036 int unexpected=0;
1037 /* End of chain (invalid manufacturer ID)
1038 *
1039 * The JTAG examine is the very first thing that happens
1040 *
1041 * A single JTAG device requires only 64 bits to be read back correctly.
1042 *
1043 * The code below adds a check that the rest of the data scanned (640 bits)
1044 * are all as expected. This helps diagnose/catch problems with the JTAG chain
1045 *
1046 * earlier and gives more helpful/explicit error messages.
1047 */
1048 for (bit_count += 32; bit_count < (JTAG_MAX_CHAIN_SIZE * 32) - 31;bit_count += 32)
1049 {
1050 idcode = buf_get_u32(idcode_buffer, bit_count, 32);
1051 if (unexpected||((idcode != 0x000000FF)&&(idcode != 0xFFFFFFFF)))
1052 {
1053 LOG_WARNING("Unexpected idcode after end of chain! %d 0x%08x", bit_count, idcode);
1054 unexpected = 1;
1055 }
1056 }
1057
1058 break;
1059 }
1060
1061 jtag_examine_chain_display(LOG_LVL_INFO, "tap/device found",
1062 tap ? tap->dotted_name : "(not-named)",
1063 idcode);
1064
1065 bit_count += 32;
1066 }
1067 device_count++;
1068 if (!tap)
1069 continue;
1070
1071 tap->idcode = idcode;
1072
1073 if (0 == tap->expected_ids_cnt)
1074 {
1075 // @todo Enable LOG_INFO to ask for reports about unknown TAP IDs.
1076 #if 0
1077 LOG_INFO("Uknown JTAG TAP ID: 0x%08x", tap->idcode)
1078 LOG_INFO("Please report the chip name and reported ID code to the openocd project");
1079 #endif
1080 tap = jtag_tap_next_enabled(tap);
1081 continue;
1082 }
1083 /* Loop over the expected identification codes and test for a match */
1084 u8 ii;
1085 for (ii = 0; ii < tap->expected_ids_cnt; ii++) {
1086 if (tap->idcode == tap->expected_ids[ii]) {
1087 break;
1088 }
1089 }
1090
1091 /* If none of the expected ids matched, log an error */
1092 if (ii != tap->expected_ids_cnt)
1093 {
1094 LOG_INFO("JTAG Tap/device matched");
1095 tap = jtag_tap_next_enabled(tap);
1096 continue;
1097 }
1098 jtag_examine_chain_display(LOG_LVL_ERROR, "got",
1099 tap->dotted_name, tap->idcode);
1100 for (ii = 0; ii < tap->expected_ids_cnt; ii++) {
1101 char msg[20];
1102 snprintf(msg, 20, "expected %hhu of %hhu",
1103 ii + 1, tap->expected_ids_cnt);
1104 jtag_examine_chain_display(LOG_LVL_ERROR, msg,
1105 tap->dotted_name, tap->expected_ids[ii]);
1106 }
1107 return ERROR_JTAG_INIT_FAILED;
1108 }
1109
1110 /* see if number of discovered devices matches configuration */
1111 if (device_count != jtag_tap_count_enabled())
1112 {
1113 LOG_ERROR("number of discovered devices in JTAG chain (%i) doesn't match (enabled) configuration (%i), total taps: %d",
1114 device_count, jtag_tap_count_enabled(), jtag_tap_count());
1115 LOG_ERROR("check the config file and ensure proper JTAG communication (connections, speed, ...)");
1116 return ERROR_JTAG_INIT_FAILED;
1117 }
1118
1119 return ERROR_OK;
1120 }
1121
1122 static int jtag_validate_chain(void)
1123 {
1124 jtag_tap_t *tap;
1125 int total_ir_length = 0;
1126 u8 *ir_test = NULL;
1127 scan_field_t field;
1128 int chain_pos = 0;
1129
1130 tap = NULL;
1131 total_ir_length = 0;
1132 for(;;){
1133 tap = jtag_tap_next_enabled(tap);
1134 if( tap == NULL ){
1135 break;
1136 }
1137 total_ir_length += tap->ir_length;
1138 }
1139
1140 total_ir_length += 2;
1141 ir_test = malloc(CEIL(total_ir_length, 8));
1142 buf_set_ones(ir_test, total_ir_length);
1143
1144 field.tap = NULL;
1145 field.num_bits = total_ir_length;
1146 field.out_value = ir_test;
1147 field.in_value = ir_test;
1148
1149
1150 jtag_add_plain_ir_scan(1, &field, TAP_RESET);
1151 jtag_execute_queue();
1152
1153 tap = NULL;
1154 chain_pos = 0;
1155 int val;
1156 for(;;){
1157 tap = jtag_tap_next_enabled(tap);
1158 if( tap == NULL ){
1159 break;
1160 }
1161
1162 val = buf_get_u32(ir_test, chain_pos, 2);
1163 if (val != 0x1)
1164 {
1165 char *cbuf = buf_to_str(ir_test, total_ir_length, 16);
1166 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);
1167 free(cbuf);
1168 free(ir_test);
1169 return ERROR_JTAG_INIT_FAILED;
1170 }
1171 chain_pos += tap->ir_length;
1172 }
1173
1174 val = buf_get_u32(ir_test, chain_pos, 2);
1175 if (val != 0x3)
1176 {
1177 char *cbuf = buf_to_str(ir_test, total_ir_length, 16);
1178 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);
1179 free(cbuf);
1180 free(ir_test);
1181 return ERROR_JTAG_INIT_FAILED;
1182 }
1183
1184 free(ir_test);
1185
1186 return ERROR_OK;
1187 }
1188
1189 enum jtag_tap_cfg_param {
1190 JCFG_EVENT
1191 };
1192
1193 static Jim_Nvp nvp_config_opts[] = {
1194 { .name = "-event", .value = JCFG_EVENT },
1195
1196 { .name = NULL, .value = -1 }
1197 };
1198
1199 static int jtag_tap_configure_cmd( Jim_GetOptInfo *goi, jtag_tap_t * tap)
1200 {
1201 Jim_Nvp *n;
1202 Jim_Obj *o;
1203 int e;
1204
1205 /* parse config or cget options */
1206 while (goi->argc > 0) {
1207 Jim_SetEmptyResult (goi->interp);
1208
1209 e = Jim_GetOpt_Nvp(goi, nvp_config_opts, &n);
1210 if (e != JIM_OK) {
1211 Jim_GetOpt_NvpUnknown(goi, nvp_config_opts, 0);
1212 return e;
1213 }
1214
1215 switch (n->value) {
1216 case JCFG_EVENT:
1217 if (goi->argc == 0) {
1218 Jim_WrongNumArgs( goi->interp, goi->argc, goi->argv, "-event ?event-name? ..." );
1219 return JIM_ERR;
1220 }
1221
1222 e = Jim_GetOpt_Nvp( goi, nvp_jtag_tap_event, &n );
1223 if (e != JIM_OK) {
1224 Jim_GetOpt_NvpUnknown(goi, nvp_jtag_tap_event, 1);
1225 return e;
1226 }
1227
1228 if (goi->isconfigure) {
1229 if (goi->argc != 1) {
1230 Jim_WrongNumArgs(goi->interp, goi->argc, goi->argv, "-event ?event-name? ?EVENT-BODY?");
1231 return JIM_ERR;
1232 }
1233 } else {
1234 if (goi->argc != 0) {
1235 Jim_WrongNumArgs(goi->interp, goi->argc, goi->argv, "-event ?event-name?");
1236 return JIM_ERR;
1237 }
1238 }
1239
1240 {
1241 jtag_tap_event_action_t *jteap;
1242
1243 jteap = tap->event_action;
1244 /* replace existing? */
1245 while (jteap) {
1246 if (jteap->event == (enum jtag_tap_event)n->value) {
1247 break;
1248 }
1249 jteap = jteap->next;
1250 }
1251
1252 if (goi->isconfigure) {
1253 if (jteap == NULL) {
1254 /* create new */
1255 jteap = calloc(1, sizeof (*jteap));
1256 }
1257 jteap->event = n->value;
1258 Jim_GetOpt_Obj( goi, &o);
1259 if (jteap->body) {
1260 Jim_DecrRefCount(interp, jteap->body);
1261 }
1262 jteap->body = Jim_DuplicateObj(goi->interp, o);
1263 Jim_IncrRefCount(jteap->body);
1264
1265 /* add to head of event list */
1266 jteap->next = tap->event_action;
1267 tap->event_action = jteap;
1268 Jim_SetEmptyResult(goi->interp);
1269 } else {
1270 /* get */
1271 if (jteap == NULL) {
1272 Jim_SetEmptyResult(goi->interp);
1273 } else {
1274 Jim_SetResult(goi->interp, Jim_DuplicateObj(goi->interp, jteap->body));
1275 }
1276 }
1277 }
1278 /* loop for more */
1279 break;
1280 }
1281 } /* while (goi->argc) */
1282
1283 return JIM_OK;
1284 }
1285
1286
1287 static void jtag_tap_init(jtag_tap_t *tap)
1288 {
1289 assert(0 != tap->ir_length);
1290
1291 tap->expected = malloc(tap->ir_length);
1292 tap->expected_mask = malloc(tap->ir_length);
1293 tap->cur_instr = malloc(tap->ir_length);
1294
1295 buf_set_u32(tap->expected, 0, tap->ir_length, tap->ir_capture_value);
1296 buf_set_u32(tap->expected_mask, 0, tap->ir_length, tap->ir_capture_mask);
1297 buf_set_ones(tap->cur_instr, tap->ir_length);
1298
1299 // place TAP in bypass mode
1300 tap->bypass = 1;
1301 // register the reset callback for the TAP
1302 jtag_register_event_callback(&jtag_reset_callback, tap);
1303
1304 LOG_DEBUG("Created Tap: %s @ abs position %d, "
1305 "irlen %d, capture: 0x%x mask: 0x%x", tap->dotted_name,
1306 tap->abs_chain_position, tap->ir_length,
1307 tap->ir_capture_value, tap->ir_capture_mask);
1308 jtag_tap_add(tap);
1309 }
1310
1311 static void jtag_tap_free(jtag_tap_t *tap)
1312 {
1313 /// @todo is anything missing? no memory leaks please
1314 free((void *)tap->expected_ids);
1315 free((void *)tap->chip);
1316 free((void *)tap->tapname);
1317 free((void *)tap->dotted_name);
1318 free(tap);
1319 }
1320
1321 static int jim_newtap_cmd( Jim_GetOptInfo *goi )
1322 {
1323 jtag_tap_t *pTap;
1324 jim_wide w;
1325 int x;
1326 int e;
1327 int reqbits;
1328 Jim_Nvp *n;
1329 char *cp;
1330 const Jim_Nvp opts[] = {
1331 #define NTAP_OPT_IRLEN 0
1332 { .name = "-irlen" , .value = NTAP_OPT_IRLEN },
1333 #define NTAP_OPT_IRMASK 1
1334 { .name = "-irmask" , .value = NTAP_OPT_IRMASK },
1335 #define NTAP_OPT_IRCAPTURE 2
1336 { .name = "-ircapture" , .value = NTAP_OPT_IRCAPTURE },
1337 #define NTAP_OPT_ENABLED 3
1338 { .name = "-enable" , .value = NTAP_OPT_ENABLED },
1339 #define NTAP_OPT_DISABLED 4
1340 { .name = "-disable" , .value = NTAP_OPT_DISABLED },
1341 #define NTAP_OPT_EXPECTED_ID 5
1342 { .name = "-expected-id" , .value = NTAP_OPT_EXPECTED_ID },
1343 { .name = NULL , .value = -1 },
1344 };
1345
1346 pTap = malloc( sizeof(jtag_tap_t) );
1347 memset( pTap, 0, sizeof(*pTap) );
1348 if( !pTap ){
1349 Jim_SetResult_sprintf( goi->interp, "no memory");
1350 return JIM_ERR;
1351 }
1352 /*
1353 * we expect CHIP + TAP + OPTIONS
1354 * */
1355 if( goi->argc < 3 ){
1356 Jim_SetResult_sprintf(goi->interp, "Missing CHIP TAP OPTIONS ....");
1357 return JIM_ERR;
1358 }
1359 Jim_GetOpt_String( goi, &cp, NULL );
1360 pTap->chip = strdup(cp);
1361
1362 Jim_GetOpt_String( goi, &cp, NULL );
1363 pTap->tapname = strdup(cp);
1364
1365 /* name + dot + name + null */
1366 x = strlen(pTap->chip) + 1 + strlen(pTap->tapname) + 1;
1367 cp = malloc( x );
1368 sprintf( cp, "%s.%s", pTap->chip, pTap->tapname );
1369 pTap->dotted_name = cp;
1370
1371 LOG_DEBUG("Creating New Tap, Chip: %s, Tap: %s, Dotted: %s, %d params",
1372 pTap->chip, pTap->tapname, pTap->dotted_name, goi->argc);
1373
1374 /* default is enabled */
1375 pTap->enabled = 1;
1376
1377 /* deal with options */
1378 #define NTREQ_IRLEN 1
1379 #define NTREQ_IRCAPTURE 2
1380 #define NTREQ_IRMASK 4
1381
1382 /* clear them as we find them */
1383 reqbits = (NTREQ_IRLEN | NTREQ_IRCAPTURE | NTREQ_IRMASK);
1384
1385 while( goi->argc ){
1386 e = Jim_GetOpt_Nvp( goi, opts, &n );
1387 if( e != JIM_OK ){
1388 Jim_GetOpt_NvpUnknown( goi, opts, 0 );
1389 return e;
1390 }
1391 LOG_DEBUG("Processing option: %s", n->name );
1392 switch( n->value ){
1393 case NTAP_OPT_ENABLED:
1394 pTap->enabled = 1;
1395 break;
1396 case NTAP_OPT_DISABLED:
1397 pTap->enabled = 0;
1398 break;
1399 case NTAP_OPT_EXPECTED_ID:
1400 {
1401 u32 *new_expected_ids;
1402
1403 e = Jim_GetOpt_Wide( goi, &w );
1404 if( e != JIM_OK) {
1405 Jim_SetResult_sprintf(goi->interp, "option: %s bad parameter", n->name);
1406 return e;
1407 }
1408
1409 new_expected_ids = malloc(sizeof(u32) * (pTap->expected_ids_cnt + 1));
1410 if (new_expected_ids == NULL) {
1411 Jim_SetResult_sprintf( goi->interp, "no memory");
1412 return JIM_ERR;
1413 }
1414
1415 memcpy(new_expected_ids, pTap->expected_ids, sizeof(u32) * pTap->expected_ids_cnt);
1416
1417 new_expected_ids[pTap->expected_ids_cnt] = w;
1418
1419 free(pTap->expected_ids);
1420 pTap->expected_ids = new_expected_ids;
1421 pTap->expected_ids_cnt++;
1422 break;
1423 }
1424 case NTAP_OPT_IRLEN:
1425 case NTAP_OPT_IRMASK:
1426 case NTAP_OPT_IRCAPTURE:
1427 e = Jim_GetOpt_Wide( goi, &w );
1428 if( e != JIM_OK ){
1429 Jim_SetResult_sprintf( goi->interp, "option: %s bad parameter", n->name );
1430 return e;
1431 }
1432 if( (w < 0) || (w > 0xffff) ){
1433 /* wacky value */
1434 Jim_SetResult_sprintf( goi->interp, "option: %s - wacky value: %d (0x%x)",
1435 n->name, (int)(w), (int)(w));
1436 return JIM_ERR;
1437 }
1438 switch(n->value){
1439 case NTAP_OPT_IRLEN:
1440 pTap->ir_length = w;
1441 reqbits &= (~(NTREQ_IRLEN));
1442 break;
1443 case NTAP_OPT_IRMASK:
1444 pTap->ir_capture_mask = w;
1445 reqbits &= (~(NTREQ_IRMASK));
1446 break;
1447 case NTAP_OPT_IRCAPTURE:
1448 pTap->ir_capture_value = w;
1449 reqbits &= (~(NTREQ_IRCAPTURE));
1450 break;
1451 }
1452 } /* switch(n->value) */
1453 } /* while( goi->argc ) */
1454
1455 /* Did all the required option bits get cleared? */
1456 if (0 == reqbits)
1457 {
1458 jtag_tap_init(pTap);
1459 return ERROR_OK;
1460 }
1461
1462 Jim_SetResult_sprintf(goi->interp,
1463 "newtap: %s missing required parameters",
1464 pTap->dotted_name);
1465 jtag_tap_free(pTap);
1466 return JIM_ERR;
1467 }
1468
1469 static int jim_jtag_command( Jim_Interp *interp, int argc, Jim_Obj *const *argv )
1470 {
1471 Jim_GetOptInfo goi;
1472 int e;
1473 Jim_Nvp *n;
1474 Jim_Obj *o;
1475 struct command_context_s *context;
1476
1477 enum {
1478 JTAG_CMD_INTERFACE,
1479 JTAG_CMD_INIT_RESET,
1480 JTAG_CMD_NEWTAP,
1481 JTAG_CMD_TAPENABLE,
1482 JTAG_CMD_TAPDISABLE,
1483 JTAG_CMD_TAPISENABLED,
1484 JTAG_CMD_CONFIGURE,
1485 JTAG_CMD_CGET
1486 };
1487
1488 const Jim_Nvp jtag_cmds[] = {
1489 { .name = "interface" , .value = JTAG_CMD_INTERFACE },
1490 { .name = "arp_init-reset", .value = JTAG_CMD_INIT_RESET },
1491 { .name = "newtap" , .value = JTAG_CMD_NEWTAP },
1492 { .name = "tapisenabled" , .value = JTAG_CMD_TAPISENABLED },
1493 { .name = "tapenable" , .value = JTAG_CMD_TAPENABLE },
1494 { .name = "tapdisable" , .value = JTAG_CMD_TAPDISABLE },
1495 { .name = "configure" , .value = JTAG_CMD_CONFIGURE },
1496 { .name = "cget" , .value = JTAG_CMD_CGET },
1497
1498 { .name = NULL, .value = -1 },
1499 };
1500
1501 context = Jim_GetAssocData(interp, "context");
1502 /* go past the command */
1503 Jim_GetOpt_Setup( &goi, interp, argc-1, argv+1 );
1504
1505 e = Jim_GetOpt_Nvp( &goi, jtag_cmds, &n );
1506 if( e != JIM_OK ){
1507 Jim_GetOpt_NvpUnknown( &goi, jtag_cmds, 0 );
1508 return e;
1509 }
1510 Jim_SetEmptyResult( goi.interp );
1511 switch( n->value ){
1512 case JTAG_CMD_INTERFACE:
1513 /* return the name of the interface */
1514 /* TCL code might need to know the exact type... */
1515 /* FUTURE: we allow this as a means to "set" the interface. */
1516 if( goi.argc != 0 ){
1517 Jim_WrongNumArgs( goi.interp, 1, goi.argv-1, "(no params)");
1518 return JIM_ERR;
1519 }
1520 Jim_SetResultString( goi.interp, jtag_interface->name, -1 );
1521 return JIM_OK;
1522 case JTAG_CMD_INIT_RESET:
1523 if( goi.argc != 0 ){
1524 Jim_WrongNumArgs( goi.interp, 1, goi.argv-1, "(no params)");
1525 return JIM_ERR;
1526 }
1527 e = jtag_init_reset(context);
1528 if( e != ERROR_OK ){
1529 Jim_SetResult_sprintf( goi.interp, "error: %d", e);
1530 return JIM_ERR;
1531 }
1532 return JIM_OK;
1533 case JTAG_CMD_NEWTAP:
1534 return jim_newtap_cmd( &goi );
1535 break;
1536 case JTAG_CMD_TAPISENABLED:
1537 case JTAG_CMD_TAPENABLE:
1538 case JTAG_CMD_TAPDISABLE:
1539 if( goi.argc != 1 ){
1540 Jim_SetResultString( goi.interp, "Too many parameters",-1 );
1541 return JIM_ERR;
1542 }
1543
1544 {
1545 jtag_tap_t *t;
1546 t = jtag_tap_by_jim_obj( goi.interp, goi.argv[0] );
1547 if( t == NULL ){
1548 return JIM_ERR;
1549 }
1550 switch( n->value ){
1551 case JTAG_CMD_TAPISENABLED:
1552 e = t->enabled;
1553 break;
1554 case JTAG_CMD_TAPENABLE:
1555 jtag_tap_handle_event( t, JTAG_TAP_EVENT_ENABLE);
1556 e = 1;
1557 t->enabled = e;
1558 break;
1559 case JTAG_CMD_TAPDISABLE:
1560 jtag_tap_handle_event( t, JTAG_TAP_EVENT_DISABLE);
1561 e = 0;
1562 t->enabled = e;
1563 break;
1564 }
1565 Jim_SetResult( goi.interp, Jim_NewIntObj( goi.interp, e ) );
1566 return JIM_OK;
1567 }
1568 break;
1569
1570 case JTAG_CMD_CGET:
1571 if( goi.argc < 2 ){
1572 Jim_WrongNumArgs( goi.interp, 0, NULL, "?tap-name? -option ...");
1573 return JIM_ERR;
1574 }
1575
1576 {
1577 jtag_tap_t *t;
1578
1579 Jim_GetOpt_Obj(&goi, &o);
1580 t = jtag_tap_by_jim_obj( goi.interp, o );
1581 if( t == NULL ){
1582 return JIM_ERR;
1583 }
1584
1585 goi.isconfigure = 0;
1586 return jtag_tap_configure_cmd( &goi, t);
1587 }
1588 break;
1589
1590 case JTAG_CMD_CONFIGURE:
1591 if( goi.argc < 3 ){
1592 Jim_WrongNumArgs( goi.interp, 0, NULL, "?tap-name? -option ?VALUE? ...");
1593 return JIM_ERR;
1594 }
1595
1596 {
1597 jtag_tap_t *t;
1598
1599 Jim_GetOpt_Obj(&goi, &o);
1600 t = jtag_tap_by_jim_obj( goi.interp, o );
1601 if( t == NULL ){
1602 return JIM_ERR;
1603 }
1604
1605 goi.isconfigure = 1;
1606 return jtag_tap_configure_cmd( &goi, t);
1607 }
1608 }
1609
1610 return JIM_ERR;
1611 }
1612
1613 int jtag_register_commands(struct command_context_s *cmd_ctx)
1614 {
1615 register_jim( cmd_ctx, "jtag", jim_jtag_command, "perform jtag tap actions");
1616
1617 register_command(cmd_ctx, NULL, "interface", handle_interface_command,
1618 COMMAND_CONFIG, "try to configure interface");
1619 register_command(cmd_ctx, NULL, "jtag_speed", handle_jtag_speed_command,
1620 COMMAND_ANY, "(DEPRECATED) set jtag speed (if supported)");
1621 register_command(cmd_ctx, NULL, "jtag_khz", handle_jtag_khz_command,
1622 COMMAND_ANY, "set maximum jtag speed (if supported); "
1623 "parameter is maximum khz, or 0 for adaptive clocking (RTCK).");
1624 register_command(cmd_ctx, NULL, "jtag_device", handle_jtag_device_command,
1625 COMMAND_CONFIG, "(DEPRECATED) jtag_device <ir_length> <ir_expected> <ir_mask>");
1626 register_command(cmd_ctx, NULL, "reset_config", handle_reset_config_command,
1627 COMMAND_ANY,
1628 "[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]");
1629 register_command(cmd_ctx, NULL, "jtag_nsrst_delay", handle_jtag_nsrst_delay_command,
1630 COMMAND_ANY, "jtag_nsrst_delay <ms> - delay after deasserting srst in ms");
1631 register_command(cmd_ctx, NULL, "jtag_ntrst_delay", handle_jtag_ntrst_delay_command,
1632 COMMAND_ANY, "jtag_ntrst_delay <ms> - delay after deasserting trst in ms");
1633
1634 register_command(cmd_ctx, NULL, "scan_chain", handle_scan_chain_command,
1635 COMMAND_EXEC, "print current scan chain configuration");
1636
1637 register_command(cmd_ctx, NULL, "endstate", handle_endstate_command,
1638 COMMAND_EXEC, "finish JTAG operations in <tap_state>");
1639 register_command(cmd_ctx, NULL, "jtag_reset", handle_jtag_reset_command,
1640 COMMAND_EXEC, "toggle reset lines <trst> <srst>");
1641 register_command(cmd_ctx, NULL, "runtest", handle_runtest_command,
1642 COMMAND_EXEC, "move to Run-Test/Idle, and execute <num_cycles>");
1643 register_command(cmd_ctx, NULL, "irscan", handle_irscan_command,
1644 COMMAND_EXEC, "execute IR scan <device> <instr> [dev2] [instr2] ...");
1645 register_jim(cmd_ctx, "drscan", Jim_Command_drscan, "execute DR scan <device> <num_bits> <value> <num_bits1> <value2> ...");
1646 register_jim(cmd_ctx, "flush_count", Jim_Command_flush_count, "returns number of times the JTAG queue has been flushed");
1647
1648 register_command(cmd_ctx, NULL, "verify_ircapture", handle_verify_ircapture_command,
1649 COMMAND_ANY, "verify value captured during Capture-IR <enable|disable>");
1650 register_command(cmd_ctx, NULL, "verify_jtag", handle_verify_jtag_command,
1651 COMMAND_ANY, "verify value capture <enable|disable>");
1652 register_command(cmd_ctx, NULL, "tms_sequence", handle_tms_sequence_command,
1653 COMMAND_ANY, "choose short(default) or long tms_sequence <short|long>");
1654 return ERROR_OK;
1655 }
1656
1657 int jtag_interface_init(struct command_context_s *cmd_ctx)
1658 {
1659 if (jtag)
1660 return ERROR_OK;
1661
1662 if (!jtag_interface)
1663 {
1664 /* nothing was previously specified by "interface" command */
1665 LOG_ERROR("JTAG interface has to be specified, see \"interface\" command");
1666 return ERROR_JTAG_INVALID_INTERFACE;
1667 }
1668 if(hasKHz)
1669 {
1670 jtag_interface->khz(jtag_get_speed_khz(), &jtag_speed);
1671 hasKHz = false;
1672 }
1673
1674 if (jtag_interface->init() != ERROR_OK)
1675 return ERROR_JTAG_INIT_FAILED;
1676
1677 jtag = jtag_interface;
1678 return ERROR_OK;
1679 }
1680
1681 static int jtag_init_inner(struct command_context_s *cmd_ctx)
1682 {
1683 jtag_tap_t *tap;
1684 int retval;
1685
1686 LOG_DEBUG("Init JTAG chain");
1687
1688 tap = jtag_tap_next_enabled(NULL);
1689 if( tap == NULL ){
1690 LOG_ERROR("There are no enabled taps?");
1691 return ERROR_JTAG_INIT_FAILED;
1692 }
1693
1694 jtag_add_tlr();
1695 if ((retval=jtag_execute_queue())!=ERROR_OK)
1696 return retval;
1697
1698 /* examine chain first, as this could discover the real chain layout */
1699 if (jtag_examine_chain() != ERROR_OK)
1700 {
1701 LOG_ERROR("trying to validate configured JTAG chain anyway...");
1702 }
1703
1704 if (jtag_validate_chain() != ERROR_OK)
1705 {
1706 LOG_WARNING("Could not validate JTAG chain, continuing anyway...");
1707 }
1708
1709 return ERROR_OK;
1710 }
1711
1712 int jtag_interface_quit(void)
1713 {
1714 if (!jtag || !jtag->quit)
1715 return ERROR_OK;
1716
1717 // close the JTAG interface
1718 int result = jtag->quit();
1719 if (ERROR_OK != result)
1720 LOG_ERROR("failed: %d", result);
1721
1722 return ERROR_OK;
1723 }
1724
1725
1726 int jtag_init_reset(struct command_context_s *cmd_ctx)
1727 {
1728 int retval;
1729
1730 if ((retval=jtag_interface_init(cmd_ctx)) != ERROR_OK)
1731 return retval;
1732
1733 LOG_DEBUG("Trying to bring the JTAG controller to life by asserting TRST / RESET");
1734
1735 /* Reset can happen after a power cycle.
1736 *
1737 * Ideally we would only assert TRST or run RESET before the target reset.
1738 *
1739 * However w/srst_pulls_trst, trst is asserted together with the target
1740 * reset whether we want it or not.
1741 *
1742 * NB! Some targets have JTAG circuitry disabled until a
1743 * trst & srst has been asserted.
1744 *
1745 * NB! here we assume nsrst/ntrst delay are sufficient!
1746 *
1747 * NB! order matters!!!! srst *can* disconnect JTAG circuitry
1748 *
1749 */
1750 jtag_add_reset(1, 0); /* RESET or TRST */
1751 if (jtag_reset_config & RESET_HAS_SRST)
1752 {
1753 jtag_add_reset(1, 1);
1754 if ((jtag_reset_config & RESET_SRST_PULLS_TRST)==0)
1755 jtag_add_reset(0, 1);
1756 }
1757 jtag_add_reset(0, 0);
1758 if ((retval = jtag_execute_queue()) != ERROR_OK)
1759 return retval;
1760
1761 /* Check that we can communication on the JTAG chain + eventually we want to
1762 * be able to perform enumeration only after OpenOCD has started
1763 * telnet and GDB server
1764 *
1765 * That would allow users to more easily perform any magic they need to before
1766 * reset happens.
1767 */
1768 return jtag_init_inner(cmd_ctx);
1769 }
1770
1771 int jtag_init(struct command_context_s *cmd_ctx)
1772 {
1773 int retval;
1774 if ((retval=jtag_interface_init(cmd_ctx)) != ERROR_OK)
1775 return retval;
1776 if (jtag_init_inner(cmd_ctx)==ERROR_OK)
1777 {
1778 return ERROR_OK;
1779 }
1780 return jtag_init_reset(cmd_ctx);
1781 }
1782
1783 void jtag_set_speed_khz(unsigned khz)
1784 {
1785 speed_khz = khz;
1786 }
1787 unsigned jtag_get_speed_khz(void)
1788 {
1789 return speed_khz;
1790 }
1791
1792 static int default_khz(int khz, int *jtag_speed)
1793 {
1794 LOG_ERROR("Translation from khz to jtag_speed not implemented");
1795 return ERROR_FAIL;
1796 }
1797
1798 static int default_speed_div(int speed, int *khz)
1799 {
1800 LOG_ERROR("Translation from jtag_speed to khz not implemented");
1801 return ERROR_FAIL;
1802 }
1803
1804 static int default_power_dropout(int *dropout)
1805 {
1806 *dropout=0; /* by default we can't detect power dropout */
1807 return ERROR_OK;
1808 }
1809
1810 static int default_srst_asserted(int *srst_asserted)
1811 {
1812 *srst_asserted=0; /* by default we can't detect srst asserted */
1813 return ERROR_OK;
1814 }
1815
1816 static int handle_interface_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1817 {
1818 int i;
1819 int retval;
1820
1821 /* check whether the interface is already configured */
1822 if (jtag_interface)
1823 {
1824 LOG_WARNING("Interface already configured, ignoring");
1825 return ERROR_OK;
1826 }
1827
1828 /* interface name is a mandatory argument */
1829 if (argc < 1 || args[0][0] == '\0')
1830 {
1831 return ERROR_COMMAND_SYNTAX_ERROR;
1832 }
1833
1834 for (i=0; jtag_interfaces[i]; i++)
1835 {
1836 if (strcmp(args[0], jtag_interfaces[i]->name) == 0)
1837 {
1838 if ((retval = jtag_interfaces[i]->register_commands(cmd_ctx)) != ERROR_OK)
1839 {
1840 return retval;
1841 }
1842
1843 jtag_interface = jtag_interfaces[i];
1844
1845 if (jtag_interface->khz == NULL)
1846 {
1847 jtag_interface->khz = default_khz;
1848 }
1849 if (jtag_interface->speed_div == NULL)
1850 {
1851 jtag_interface->speed_div = default_speed_div;
1852 }
1853 if (jtag_interface->power_dropout == NULL)
1854 {
1855 jtag_interface->power_dropout = default_power_dropout;
1856 }
1857 if (jtag_interface->srst_asserted == NULL)
1858 {
1859 jtag_interface->srst_asserted = default_srst_asserted;
1860 }
1861
1862 return ERROR_OK;
1863 }
1864 }
1865
1866 /* no valid interface was found (i.e. the configuration option,
1867 * didn't match one of the compiled-in interfaces
1868 */
1869 LOG_ERROR("No valid jtag interface found (%s)", args[0]);
1870 LOG_ERROR("compiled-in jtag interfaces:");
1871 for (i = 0; jtag_interfaces[i]; i++)
1872 {
1873 LOG_ERROR("%i: %s", i, jtag_interfaces[i]->name);
1874 }
1875
1876 return ERROR_JTAG_INVALID_INTERFACE;
1877 }
1878
1879 static int handle_jtag_device_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1880 {
1881 int e;
1882 char buf[1024];
1883 Jim_Obj *newargs[ 10 ];
1884 /*
1885 * CONVERT SYNTAX
1886 * argv[-1] = command
1887 * argv[ 0] = ir length
1888 * argv[ 1] = ir capture
1889 * argv[ 2] = ir mask
1890 * argv[ 3] = not actually used by anything but in the docs
1891 */
1892
1893 if( argc < 4 ){
1894 command_print( cmd_ctx, "OLD DEPRECATED SYNTAX: Please use the NEW syntax");
1895 return ERROR_OK;
1896 }
1897 command_print( cmd_ctx, "OLD SYNTAX: DEPRECATED - translating to new syntax");
1898 command_print( cmd_ctx, "jtag newtap CHIP TAP -irlen %s -ircapture %s -irvalue %s",
1899 args[0],
1900 args[1],
1901 args[2] );
1902 command_print( cmd_ctx, "Example: STM32 has 2 taps, the cortexM3(len4) + boundaryscan(len5)");
1903 command_print( cmd_ctx, "jtag newtap stm32 cortexm3 ....., thus creating the tap: \"stm32.cortexm3\"");
1904 command_print( cmd_ctx, "jtag newtap stm32 boundary ....., and the tap: \"stm32.boundary\"");
1905 command_print( cmd_ctx, "And then refer to the taps by the dotted name.");
1906
1907 newargs[0] = Jim_NewStringObj( interp, "jtag", -1 );
1908 newargs[1] = Jim_NewStringObj( interp, "newtap", -1 );
1909 sprintf( buf, "chip%d", jtag_tap_count() );
1910 newargs[2] = Jim_NewStringObj( interp, buf, -1 );
1911 sprintf( buf, "tap%d", jtag_tap_count() );
1912 newargs[3] = Jim_NewStringObj( interp, buf, -1 );
1913 newargs[4] = Jim_NewStringObj( interp, "-irlen", -1 );
1914 newargs[5] = Jim_NewStringObj( interp, args[0], -1 );
1915 newargs[6] = Jim_NewStringObj( interp, "-ircapture", -1 );
1916 newargs[7] = Jim_NewStringObj( interp, args[1], -1 );
1917 newargs[8] = Jim_NewStringObj( interp, "-irmask", -1 );
1918 newargs[9] = Jim_NewStringObj( interp, args[2], -1 );
1919
1920 command_print( cmd_ctx, "NEW COMMAND:");
1921 sprintf( buf, "%s %s %s %s %s %s %s %s %s %s",
1922 Jim_GetString( newargs[0], NULL ),
1923 Jim_GetString( newargs[1], NULL ),
1924 Jim_GetString( newargs[2], NULL ),
1925 Jim_GetString( newargs[3], NULL ),
1926 Jim_GetString( newargs[4], NULL ),
1927 Jim_GetString( newargs[5], NULL ),
1928 Jim_GetString( newargs[6], NULL ),
1929 Jim_GetString( newargs[7], NULL ),
1930 Jim_GetString( newargs[8], NULL ),
1931 Jim_GetString( newargs[9], NULL ) );
1932
1933 e = jim_jtag_command( interp, 10, newargs );
1934 if( e != JIM_OK ){
1935 command_print( cmd_ctx, "%s", Jim_GetString( Jim_GetResult(interp), NULL ) );
1936 }
1937 return e;
1938 }
1939
1940 static int handle_scan_chain_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1941 {
1942 jtag_tap_t *tap;
1943
1944 tap = jtag_all_taps();
1945 command_print(cmd_ctx, " TapName | Enabled | IdCode Expected IrLen IrCap IrMask Instr ");
1946 command_print(cmd_ctx, "---|--------------------|---------|------------|------------|------|------|------|---------");
1947
1948 while( tap ){
1949 u32 expected, expected_mask, cur_instr, ii;
1950 expected = buf_get_u32(tap->expected, 0, tap->ir_length);
1951 expected_mask = buf_get_u32(tap->expected_mask, 0, tap->ir_length);
1952 cur_instr = buf_get_u32(tap->cur_instr, 0, tap->ir_length);
1953
1954 command_print(cmd_ctx,
1955 "%2d | %-18s | %c | 0x%08x | 0x%08x | 0x%02x | 0x%02x | 0x%02x | 0x%02x",
1956 tap->abs_chain_position,
1957 tap->dotted_name,
1958 tap->enabled ? 'Y' : 'n',
1959 tap->idcode,
1960 (tap->expected_ids_cnt > 0 ? tap->expected_ids[0] : 0),
1961 tap->ir_length,
1962 expected,
1963 expected_mask,
1964 cur_instr);
1965
1966 for (ii = 1; ii < tap->expected_ids_cnt; ii++) {
1967 command_print(cmd_ctx, " | | | | 0x%08x | | | | ",
1968 tap->expected_ids[ii]);
1969 }
1970
1971 tap = tap->next_tap;
1972 }
1973
1974 return ERROR_OK;
1975 }
1976
1977 static int handle_reset_config_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1978 {
1979 int new_cfg = 0;
1980 int mask = 0;
1981
1982 if (argc < 1)
1983 return ERROR_COMMAND_SYNTAX_ERROR;
1984
1985 /* Original versions cared about the order of these tokens:
1986 * reset_config signals [combination [trst_type [srst_type]]]
1987 * They also clobbered the previous configuration even on error.
1988 *
1989 * Here we don't care about the order, and only change values
1990 * which have been explicitly specified.
1991 */
1992 for (; argc; argc--, args++) {
1993 int tmp = 0;
1994 int m;
1995
1996 /* signals */
1997 m = RESET_HAS_TRST | RESET_HAS_SRST;
1998 if (strcmp(*args, "none") == 0)
1999 tmp = RESET_NONE;
2000 else if (strcmp(*args, "trst_only") == 0)
2001 tmp = RESET_HAS_TRST;
2002 else if (strcmp(*args, "srst_only") == 0)
2003 tmp = RESET_HAS_SRST;
2004 else if (strcmp(*args, "trst_and_srst") == 0)
2005 tmp = RESET_HAS_TRST | RESET_HAS_SRST;
2006 else
2007 m = 0;
2008 if (mask & m) {
2009 LOG_ERROR("extra reset_config %s spec (%s)",
2010 "signal", *args);
2011 return ERROR_INVALID_ARGUMENTS;
2012 }
2013 if (m)
2014 goto next;
2015
2016 /* combination (options for broken wiring) */
2017 m = RESET_SRST_PULLS_TRST | RESET_TRST_PULLS_SRST;
2018 if (strcmp(*args, "separate") == 0)
2019 /* separate reset lines - default */;
2020 else if (strcmp(*args, "srst_pulls_trst") == 0)
2021 tmp |= RESET_SRST_PULLS_TRST;
2022 else if (strcmp(*args, "trst_pulls_srst") == 0)
2023 tmp |= RESET_TRST_PULLS_SRST;
2024 else if (strcmp(*args, "combined") == 0)
2025 tmp |= RESET_SRST_PULLS_TRST | RESET_TRST_PULLS_SRST;
2026 else
2027 m = 0;
2028 if (mask & m) {
2029 LOG_ERROR("extra reset_config %s spec (%s)",
2030 "combination", *args);
2031 return ERROR_INVALID_ARGUMENTS;
2032 }
2033 if (m)
2034 goto next;
2035
2036 /* trst_type (NOP without HAS_TRST) */
2037 m = RESET_TRST_OPEN_DRAIN;
2038 if (strcmp(*args, "trst_open_drain") == 0)
2039 tmp |= RESET_TRST_OPEN_DRAIN;
2040 else if (strcmp(*args, "trst_push_pull") == 0)
2041 /* push/pull from adapter - default */;
2042 else
2043 m = 0;
2044 if (mask & m) {
2045 LOG_ERROR("extra reset_config %s spec (%s)",
2046 "trst_type", *args);
2047 return ERROR_INVALID_ARGUMENTS;
2048 }
2049 if (m)
2050 goto next;
2051
2052 /* srst_type (NOP without HAS_SRST) */
2053 m |= RESET_SRST_PUSH_PULL;
2054 if (strcmp(*args, "srst_push_pull") == 0)
2055 tmp |= RESET_SRST_PUSH_PULL;
2056 else if (strcmp(*args, "srst_open_drain") == 0)
2057 /* open drain from adapter - default */;
2058 else
2059 m = 0;
2060 if (mask & m) {
2061 LOG_ERROR("extra reset_config %s spec (%s)",
2062 "srst_type", *args);
2063 return ERROR_INVALID_ARGUMENTS;
2064 }
2065 if (m)
2066 goto next;
2067
2068 /* caller provided nonsense; fail */
2069 LOG_ERROR("unknown reset_config flag (%s)", *args);
2070 return ERROR_INVALID_ARGUMENTS;
2071
2072 next:
2073 /* Remember the bits which were specified (mask)
2074 * and their new values (new_cfg).
2075 */
2076 mask |= m;
2077 new_cfg |= tmp;
2078 }
2079
2080 /* clear previous values of those bits, save new values */
2081 jtag_reset_config &= ~mask;
2082 jtag_reset_config |= new_cfg;
2083
2084 return ERROR_OK;
2085 }
2086
2087 static int handle_jtag_nsrst_delay_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2088 {
2089 if (argc < 1)
2090 {
2091 LOG_ERROR("jtag_nsrst_delay <ms> command takes one required argument");
2092 exit(-1);
2093 }
2094 else
2095 {
2096 jtag_set_nsrst_delay(strtoul(args[0], NULL, 0));
2097 }
2098
2099 return ERROR_OK;
2100 }
2101
2102 static int handle_jtag_ntrst_delay_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2103 {
2104 if (argc < 1)
2105 {
2106 LOG_ERROR("jtag_ntrst_delay <ms> command takes one required argument");
2107 exit(-1);
2108 }
2109 else
2110 {
2111 jtag_set_ntrst_delay(strtoul(args[0], NULL, 0));
2112 }
2113
2114 return ERROR_OK;
2115 }
2116
2117
2118 static int handle_jtag_speed_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2119 {
2120 int retval=ERROR_OK;
2121
2122 if (argc == 1)
2123 {
2124 LOG_DEBUG("handle jtag speed");
2125
2126 int cur_speed = 0;
2127 cur_speed = jtag_speed = strtoul(args[0], NULL, 0);
2128
2129 /* this command can be called during CONFIG,
2130 * in which case jtag isn't initialized */
2131 if (jtag)
2132 {
2133 retval=jtag->speed(cur_speed);
2134 }
2135 } else if (argc == 0)
2136 {
2137 } else
2138 {
2139 return ERROR_COMMAND_SYNTAX_ERROR;
2140 }
2141 command_print(cmd_ctx, "jtag_speed: %d", jtag_speed);
2142
2143 return retval;
2144 }
2145
2146 static int handle_jtag_khz_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2147 {
2148 int retval=ERROR_OK;
2149 LOG_DEBUG("handle jtag khz");
2150
2151 int cur_speed = 0;
2152 if(argc == 1)
2153 {
2154 jtag_set_speed_khz(strtoul(args[0], NULL, 0));
2155 if (jtag != NULL)
2156 {
2157 LOG_DEBUG("have interface set up");
2158 int speed_div1;
2159 if ((retval=jtag->khz(jtag_get_speed_khz(), &speed_div1))!=ERROR_OK)
2160 {
2161 jtag_set_speed_khz(0);
2162 return retval;
2163 }
2164
2165 cur_speed = jtag_speed = speed_div1;
2166
2167 retval=jtag->speed(cur_speed);
2168 } else
2169 {
2170 hasKHz = true;
2171 }
2172 } else if (argc==0)
2173 {
2174 } else
2175 {
2176 return ERROR_COMMAND_SYNTAX_ERROR;
2177 }
2178 cur_speed = jtag_get_speed_khz();
2179
2180 if (jtag!=NULL)
2181 {
2182 if ((retval=jtag->speed_div(jtag_speed, &cur_speed))!=ERROR_OK)
2183 return retval;
2184 }
2185
2186 if (cur_speed)
2187 command_print(cmd_ctx, "%d kHz", cur_speed);
2188 else
2189 command_print(cmd_ctx, "RCLK - adaptive");
2190 return retval;
2191
2192 }
2193
2194 static int handle_endstate_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2195 {
2196 if (argc < 1)
2197 return ERROR_COMMAND_SYNTAX_ERROR;
2198
2199 tap_state_t state = tap_state_by_name(args[0]);
2200 if (state < 0)
2201 {
2202 command_print( cmd_ctx, "Invalid state name: %s\n", args[0] );
2203 return ERROR_COMMAND_SYNTAX_ERROR;
2204 }
2205 jtag_set_end_state(state);
2206 jtag_execute_queue();
2207
2208 command_print(cmd_ctx, "current endstate: %s",
2209 tap_state_name(cmd_queue_end_state));
2210
2211 return ERROR_OK;
2212 }
2213
2214 static int handle_jtag_reset_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2215 {
2216 int trst = -1;
2217 int srst = -1;
2218
2219 if (argc < 2)
2220 {
2221 return ERROR_COMMAND_SYNTAX_ERROR;
2222 }
2223
2224 if (args[0][0] == '1')
2225 trst = 1;
2226 else if (args[0][0] == '0')
2227 trst = 0;
2228 else
2229 {
2230 return ERROR_COMMAND_SYNTAX_ERROR;
2231 }
2232
2233 if (args[1][0] == '1')
2234 srst = 1;
2235 else if (args[1][0] == '0')
2236 srst = 0;
2237 else
2238 {
2239 return ERROR_COMMAND_SYNTAX_ERROR;
2240 }
2241
2242 if (jtag_interface_init(cmd_ctx) != ERROR_OK)
2243 return ERROR_JTAG_INIT_FAILED;
2244
2245 jtag_add_reset(trst, srst);
2246 jtag_execute_queue();
2247
2248 return ERROR_OK;
2249 }
2250
2251 static int handle_runtest_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2252 {
2253 if (argc < 1)
2254 {
2255 return ERROR_COMMAND_SYNTAX_ERROR;
2256 }
2257
2258 jtag_add_runtest(strtol(args[0], NULL, 0), jtag_get_end_state());
2259 jtag_execute_queue();
2260
2261 return ERROR_OK;
2262
2263 }
2264
2265 /*
2266 * For "irscan" or "drscan" commands, the "end" (really, "next") state
2267 * should be stable ... and *NOT* a shift state, otherwise free-running
2268 * jtag clocks could change the values latched by the update state.
2269 */
2270 static bool scan_is_safe(tap_state_t state)
2271 {
2272 switch (state)
2273 {
2274 case TAP_RESET:
2275 case TAP_IDLE:
2276 case TAP_DRPAUSE:
2277 case TAP_IRPAUSE:
2278 return true;
2279 default:
2280 return false;
2281 }
2282 }
2283
2284
2285 static int handle_irscan_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2286 {
2287 int i;
2288 scan_field_t *fields;
2289 jtag_tap_t *tap;
2290 tap_state_t endstate;
2291
2292 if ((argc < 2) || (argc % 2))
2293 {
2294 return ERROR_COMMAND_SYNTAX_ERROR;
2295 }
2296
2297 /* optional "-endstate" "statename" at the end of the arguments,
2298 * so that e.g. IRPAUSE can let us load the data register before
2299 * entering RUN/IDLE to execute the instruction we load here.
2300 */
2301 endstate = TAP_IDLE;
2302
2303 if( argc >= 4 ){
2304 /* have at least one pair of numbers. */
2305 /* is last pair the magic text? */
2306 if( 0 == strcmp( "-endstate", args[ argc - 2 ] ) ){
2307 const char *cpA;
2308 const char *cpS;
2309 cpA = args[ argc-1 ];
2310 for( endstate = 0 ; endstate < TAP_NUM_STATES ; endstate++ ){
2311 cpS = tap_state_name( endstate );
2312 if( 0 == strcmp( cpA, cpS ) ){
2313 break;
2314 }
2315 }
2316 if( endstate >= TAP_NUM_STATES ){
2317 return ERROR_COMMAND_SYNTAX_ERROR;
2318 } else {
2319 if (!scan_is_safe(endstate))
2320 LOG_WARNING("irscan with unsafe "
2321 "endstate \"%s\"", cpA);
2322 /* found - remove the last 2 args */
2323 argc -= 2;
2324 }
2325 }
2326 }
2327
2328 int num_fields = argc / 2;
2329
2330 fields = malloc(sizeof(scan_field_t) * num_fields);
2331
2332 for (i = 0; i < num_fields; i++)
2333 {
2334 tap = jtag_tap_by_string( args[i*2] );
2335 if (tap==NULL)
2336 {
2337 command_print( cmd_ctx, "Tap: %s unknown", args[i*2] );
2338 return ERROR_FAIL;
2339 }
2340 int field_size = tap->ir_length;
2341 fields[i].tap = tap;
2342 fields[i].num_bits = field_size;
2343 fields[i].out_value = malloc(CEIL(field_size, 8));
2344 buf_set_u32(fields[i].out_value, 0, field_size, strtoul(args[i*2+1], NULL, 0));
2345 fields[i].in_value = NULL;
2346 }
2347
2348 /* did we have an endstate? */
2349 jtag_add_ir_scan(num_fields, fields, endstate);
2350
2351 int retval=jtag_execute_queue();
2352
2353 for (i = 0; i < num_fields; i++)
2354 free(fields[i].out_value);
2355
2356 free (fields);
2357
2358 return retval;
2359 }
2360
2361 static int Jim_Command_drscan(Jim_Interp *interp, int argc, Jim_Obj *const *args)
2362 {
2363 int retval;
2364 scan_field_t *fields;
2365 int num_fields;
2366 int field_count = 0;
2367 int i, e;
2368 jtag_tap_t *tap;
2369 tap_state_t endstate;
2370
2371 /* args[1] = device
2372 * args[2] = num_bits
2373 * args[3] = hex string
2374 * ... repeat num bits and hex string ...
2375 *
2376 * .. optionally:
2377 * args[N-2] = "-endstate"
2378 * args[N-1] = statename
2379 */
2380 if ((argc < 4) || ((argc % 2)!=0))
2381 {
2382 Jim_WrongNumArgs(interp, 1, args, "wrong arguments");
2383 return JIM_ERR;
2384 }
2385
2386 endstate = TAP_IDLE;
2387
2388 /* validate arguments as numbers */
2389 e = JIM_OK;
2390 for (i = 2; i < argc; i+=2)
2391 {
2392 long bits;
2393 const char *cp;
2394
2395 e = Jim_GetLong(interp, args[i], &bits);
2396 /* If valid - try next arg */
2397 if( e == JIM_OK ){
2398 continue;
2399 }
2400
2401 /* Not valid.. are we at the end? */
2402 if ( ((i+2) != argc) ){
2403 /* nope, then error */
2404 return e;
2405 }
2406
2407 /* it could be: "-endstate FOO"
2408 * e.g. DRPAUSE so we can issue more instructions
2409 * before entering RUN/IDLE and executing them.
2410 */
2411
2412 /* get arg as a string. */
2413 cp = Jim_GetString( args[i], NULL );
2414 /* is it the magic? */
2415 if( 0 == strcmp( "-endstate", cp ) ){
2416 /* is the statename valid? */
2417 cp = Jim_GetString( args[i+1], NULL );
2418
2419 /* see if it is a valid state name */
2420 endstate = tap_state_by_name(cp);
2421 if( endstate < 0 ){
2422 /* update the error message */
2423 Jim_SetResult_sprintf(interp,"endstate: %s invalid", cp );
2424 } else {
2425 if (!scan_is_safe(endstate))
2426 LOG_WARNING("drscan with unsafe "
2427 "endstate \"%s\"", cp);
2428
2429 /* valid - so clear the error */
2430 e = JIM_OK;
2431 /* and remove the last 2 args */
2432 argc -= 2;
2433 }
2434 }
2435
2436 /* Still an error? */
2437 if( e != JIM_OK ){
2438 return e; /* too bad */
2439 }
2440 } /* validate args */
2441
2442 tap = jtag_tap_by_jim_obj( interp, args[1] );
2443 if( tap == NULL ){
2444 return JIM_ERR;
2445 }
2446
2447 num_fields=(argc-2)/2;
2448 fields = malloc(sizeof(scan_field_t) * num_fields);
2449 for (i = 2; i < argc; i+=2)
2450 {
2451 long bits;
2452 int len;
2453 const char *str;
2454
2455 Jim_GetLong(interp, args[i], &bits);
2456 str = Jim_GetString(args[i+1], &len);
2457
2458 fields[field_count].tap = tap;
2459 fields[field_count].num_bits = bits;
2460 fields[field_count].out_value = malloc(CEIL(bits, 8));
2461 str_to_buf(str, len, fields[field_count].out_value, bits, 0);
2462 fields[field_count].in_value = fields[field_count].out_value;
2463 field_count++;
2464 }
2465
2466 jtag_add_dr_scan(num_fields, fields, endstate);
2467
2468 retval = jtag_execute_queue();
2469 if (retval != ERROR_OK)
2470 {
2471 Jim_SetResultString(interp, "drscan: jtag execute failed",-1);
2472 return JIM_ERR;
2473 }
2474
2475 field_count=0;
2476 Jim_Obj *list = Jim_NewListObj(interp, NULL, 0);
2477 for (i = 2; i < argc; i+=2)
2478 {
2479 long bits;
2480 char *str;
2481
2482 Jim_GetLong(interp, args[i], &bits);
2483 str = buf_to_str(fields[field_count].in_value, bits, 16);
2484 free(fields[field_count].out_value);
2485
2486 Jim_ListAppendElement(interp, list, Jim_NewStringObj(interp, str, strlen(str)));
2487 free(str);
2488 field_count++;
2489 }
2490
2491 Jim_SetResult(interp, list);
2492
2493 free(fields);
2494
2495 return JIM_OK;
2496 }
2497
2498
2499 static int Jim_Command_flush_count(Jim_Interp *interp, int argc, Jim_Obj *const *args)
2500 {
2501 Jim_SetResult(interp, Jim_NewIntObj(interp, jtag_get_flush_queue_count()));
2502
2503 return JIM_OK;
2504 }
2505
2506
2507 static int handle_verify_ircapture_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2508 {
2509 if (argc == 1)
2510 {
2511 if (strcmp(args[0], "enable") == 0)
2512 {
2513 jtag_verify_capture_ir = 1;
2514 }
2515 else if (strcmp(args[0], "disable") == 0)
2516 {
2517 jtag_verify_capture_ir = 0;
2518 } else
2519 {
2520 return ERROR_COMMAND_SYNTAX_ERROR;
2521 }
2522 } else if (argc != 0)
2523 {
2524 return ERROR_COMMAND_SYNTAX_ERROR;
2525 }
2526
2527 command_print(cmd_ctx, "verify Capture-IR is %s", (jtag_verify_capture_ir) ? "enabled": "disabled");
2528
2529 return ERROR_OK;
2530 }
2531
2532 void jtag_set_verify(bool enable)
2533 {
2534 jtag_verify = enable;
2535 }
2536
2537 bool jtag_will_verify()
2538 {
2539 return jtag_verify;
2540 }
2541
2542 static int handle_verify_jtag_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2543 {
2544 if (argc > 1)
2545 return ERROR_COMMAND_SYNTAX_ERROR;
2546
2547 if (argc == 1)
2548 {
2549 if (strcmp(args[0], "enable") == 0)
2550 jtag_set_verify(true);
2551 else if (strcmp(args[0], "disable") == 0)
2552 jtag_set_verify(false);
2553 else
2554 return ERROR_COMMAND_SYNTAX_ERROR;
2555 }
2556
2557 const char *status = jtag_will_verify() ? "enabled": "disabled";
2558 command_print(cmd_ctx, "verify jtag capture is %s", status);
2559
2560 return ERROR_OK;
2561 }
2562
2563
2564 int jtag_power_dropout(int *dropout)
2565 {
2566 return jtag->power_dropout(dropout);
2567 }
2568
2569 int jtag_srst_asserted(int *srst_asserted)
2570 {
2571 return jtag->srst_asserted(srst_asserted);
2572 }
2573
2574 void jtag_tap_handle_event( jtag_tap_t * tap, enum jtag_tap_event e)
2575 {
2576 jtag_tap_event_action_t * jteap;
2577 int done;
2578
2579 jteap = tap->event_action;
2580
2581 done = 0;
2582 while (jteap) {
2583 if (jteap->event == e) {
2584 done = 1;
2585 LOG_DEBUG( "JTAG tap: %s event: %d (%s) action: %s\n",
2586 tap->dotted_name,
2587 e,
2588 Jim_Nvp_value2name_simple(nvp_jtag_tap_event, e)->name,
2589 Jim_GetString(jteap->body, NULL) );
2590 if (Jim_EvalObj(interp, jteap->body) != JIM_OK) {
2591 Jim_PrintErrorMessage(interp);
2592 }
2593 }
2594
2595 jteap = jteap->next;
2596 }
2597
2598 if (!done) {
2599 LOG_DEBUG( "event %d %s - no action",
2600 e,
2601 Jim_Nvp_value2name_simple( nvp_jtag_tap_event, e)->name);
2602 }
2603 }
2604
2605 static int handle_tms_sequence_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2606 {
2607 if (argc > 1)
2608 return ERROR_COMMAND_SYNTAX_ERROR;
2609
2610 if (argc == 1)
2611 {
2612 bool use_new_table;
2613 if (strcmp(args[0], "short") == 0)
2614 use_new_table = true;
2615 else if (strcmp(args[0], "long") == 0)
2616 use_new_table = false;
2617 else
2618 return ERROR_COMMAND_SYNTAX_ERROR;
2619
2620 tap_use_new_tms_table(use_new_table);
2621 }
2622
2623 command_print(cmd_ctx, "tms sequence is %s",
2624 tap_uses_new_tms_table() ? "short": "long");
2625
2626 return ERROR_OK;
2627 }
2628
2629 /**
2630 * Function jtag_add_statemove
2631 * moves from the current state to the goal \a state. This needs
2632 * to be handled according to the xsvf spec, see the XSTATE command
2633 * description.
2634 */
2635 int jtag_add_statemove(tap_state_t goal_state)
2636 {
2637 int retval = ERROR_OK;
2638
2639 tap_state_t moves[8];
2640 tap_state_t cur_state = cmd_queue_cur_state;
2641 int i;
2642 int tms_bits;
2643 int tms_count;
2644
2645 LOG_DEBUG( "cur_state=%s goal_state=%s",
2646 tap_state_name(cur_state),
2647 tap_state_name(goal_state) );
2648
2649
2650 /* From the XSVF spec, pertaining to XSTATE:
2651
2652 For special states known as stable states (Test-Logic-Reset,
2653 Run-Test/Idle, Pause-DR, Pause- IR), an XSVF interpreter follows
2654 predefined TAP state paths when the starting state is a stable state and
2655 when the XSTATE specifies a new stable state (see the STATE command in
2656 the [Ref 5] for the TAP state paths between stable states). For
2657 non-stable states, XSTATE should specify a state that is only one TAP
2658 state transition distance from the current TAP state to avoid undefined
2659 TAP state paths. A sequence of multiple XSTATE commands can be issued to
2660 transition the TAP through a specific state path.
2661 */
2662
2663 if (goal_state==cur_state )
2664 ; /* nothing to do */
2665
2666 else if( goal_state==TAP_RESET )
2667 {
2668 jtag_add_tlr();
2669 }
2670
2671 else if( tap_is_state_stable(cur_state) && tap_is_state_stable(goal_state) )
2672 {
2673 /* note: unless tms_bits holds a path that agrees with [Ref 5] in above
2674 spec, then this code is not fully conformant to the xsvf spec. This
2675 puts a burden on tap_get_tms_path() function from the xsvf spec.
2676 If in doubt, you should confirm that that burden is being met.
2677 */
2678
2679 tms_bits = tap_get_tms_path(cur_state, goal_state);
2680 tms_count = tap_get_tms_path_len(cur_state, goal_state);
2681
2682 assert( (unsigned) tms_count < DIM(moves) );
2683
2684 for (i=0; i<tms_count; i++, tms_bits>>=1)
2685 {
2686 bool bit = tms_bits & 1;
2687
2688 cur_state = tap_state_transition(cur_state, bit);
2689 moves[i] = cur_state;
2690 }
2691
2692 jtag_add_pathmove(tms_count, moves);
2693 }
2694
2695 /* else state must be immediately reachable in one clock cycle, and does not
2696 need to be a stable state.
2697 */
2698 else if( tap_state_transition(cur_state, true) == goal_state
2699 || tap_state_transition(cur_state, false) == goal_state )
2700 {
2701 /* move a single state */
2702 moves[0] = goal_state;
2703 jtag_add_pathmove( 1, moves );
2704 }
2705
2706 else
2707 {
2708 retval = ERROR_FAIL;
2709 }
2710
2711 return retval;
2712 }
2713
2714 void jtag_set_nsrst_delay(unsigned delay)
2715 {
2716 jtag_nsrst_delay = delay;
2717 }
2718 void jtag_set_ntrst_delay(unsigned delay)
2719 {
2720 jtag_ntrst_delay = delay;
2721 }
2722
2723
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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)