1 /***************************************************************************
2 * Copyright (C) 2005 by Dominic Rath *
3 * Dominic.Rath@gmx.de *
4 * *
5 * Copyright (C) 2007-2010 Øyvind Harboe *
6 * oyvind.harboe@zylin.com *
7 * *
8 * Copyright (C) 2009 SoftPLC Corporation *
9 * http://softplc.com *
10 * dick@softplc.com *
11 * *
12 * Copyright (C) 2009 Zachary T Welch *
13 * zw@superlucidity.net *
14 * *
15 * This program is free software; you can redistribute it and/or modify *
16 * it under the terms of the GNU General Public License as published by *
17 * the Free Software Foundation; either version 2 of the License, or *
18 * (at your option) any later version. *
19 * *
20 * This program is distributed in the hope that it will be useful, *
21 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
22 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
23 * GNU General Public License for more details. *
24 * *
25 * You should have received a copy of the GNU General Public License *
26 * along with this program. If not, see <http://www.gnu.org/licenses/>. *
27 ***************************************************************************/
28
29 #ifdef HAVE_CONFIG_H
30 #include "config.h"
31 #endif
32
33 #include "jtag.h"
34 #include "swd.h"
35 #include "minidriver.h"
36 #include "interface.h"
37 #include "interfaces.h"
38 #include "tcl.h"
39
40 #ifdef HAVE_STRINGS_H
41 #include <strings.h>
42 #endif
43
44 #include <helper/time_support.h>
45 #include "transport/transport.h"
46
47 /**
48 * @file
49 * Holds support for accessing JTAG-specific mechanisms from TCl scripts.
50 */
51
52 static const Jim_Nvp nvp_jtag_tap_event[] = {
53 { .value = JTAG_TRST_ASSERTED, .name = "post-reset" },
54 { .value = JTAG_TAP_EVENT_SETUP, .name = "setup" },
55 { .value = JTAG_TAP_EVENT_ENABLE, .name = "tap-enable" },
56 { .value = JTAG_TAP_EVENT_DISABLE, .name = "tap-disable" },
57
58 { .name = NULL, .value = -1 }
59 };
60
jtag_tap_by_jim_obj(Jim_Interp * interp,Jim_Obj * o)61 struct jtag_tap *jtag_tap_by_jim_obj(Jim_Interp *interp, Jim_Obj *o)
62 {
63 const char *cp = Jim_GetString(o, NULL);
64 struct jtag_tap *t = cp ? jtag_tap_by_string(cp) : NULL;
65 if (NULL == cp)
66 cp = "(unknown)";
67 if (NULL == t)
68 Jim_SetResultFormatted(interp, "Tap '%s' could not be found", cp);
69 return t;
70 }
71
scan_is_safe(tap_state_t state)72 static bool scan_is_safe(tap_state_t state)
73 {
74 switch (state) {
75 case TAP_RESET:
76 case TAP_IDLE:
77 case TAP_DRPAUSE:
78 case TAP_IRPAUSE:
79 return true;
80 default:
81 return false;
82 }
83 }
84
Jim_Command_drscan(Jim_Interp * interp,int argc,Jim_Obj * const * args)85 static int Jim_Command_drscan(Jim_Interp *interp, int argc, Jim_Obj *const *args)
86 {
87 int retval;
88 struct scan_field *fields;
89 int num_fields;
90 int field_count = 0;
91 int i, e;
92 struct jtag_tap *tap;
93 tap_state_t endstate;
94
95 /* args[1] = device
96 * args[2] = num_bits
97 * args[3] = hex string
98 * ... repeat num bits and hex string ...
99 *
100 * .. optionally:
101 * args[N-2] = "-endstate"
102 * args[N-1] = statename
103 */
104 if ((argc < 4) || ((argc % 2) != 0)) {
105 Jim_WrongNumArgs(interp, 1, args, "wrong arguments");
106 return JIM_ERR;
107 }
108
109 endstate = TAP_IDLE;
110
111 script_debug(interp, argc, args);
112
113 /* validate arguments as numbers */
114 e = JIM_OK;
115 for (i = 2; i < argc; i += 2) {
116 long bits;
117 const char *cp;
118
119 e = Jim_GetLong(interp, args[i], &bits);
120 /* If valid - try next arg */
121 if (e == JIM_OK)
122 continue;
123
124 /* Not valid.. are we at the end? */
125 if (((i + 2) != argc)) {
126 /* nope, then error */
127 return e;
128 }
129
130 /* it could be: "-endstate FOO"
131 * e.g. DRPAUSE so we can issue more instructions
132 * before entering RUN/IDLE and executing them.
133 */
134
135 /* get arg as a string. */
136 cp = Jim_GetString(args[i], NULL);
137 /* is it the magic? */
138 if (0 == strcmp("-endstate", cp)) {
139 /* is the statename valid? */
140 cp = Jim_GetString(args[i + 1], NULL);
141
142 /* see if it is a valid state name */
143 endstate = tap_state_by_name(cp);
144 if (endstate < 0) {
145 /* update the error message */
146 Jim_SetResultFormatted(interp, "endstate: %s invalid", cp);
147 } else {
148 if (!scan_is_safe(endstate))
149 LOG_WARNING("drscan with unsafe "
150 "endstate \"%s\"", cp);
151
152 /* valid - so clear the error */
153 e = JIM_OK;
154 /* and remove the last 2 args */
155 argc -= 2;
156 }
157 }
158
159 /* Still an error? */
160 if (e != JIM_OK)
161 return e; /* too bad */
162 } /* validate args */
163
164 assert(e == JIM_OK);
165
166 tap = jtag_tap_by_jim_obj(interp, args[1]);
167 if (tap == NULL)
168 return JIM_ERR;
169
170 num_fields = (argc-2)/2;
171 if (num_fields <= 0) {
172 Jim_SetResultString(interp, "drscan: no scan fields supplied", -1);
173 return JIM_ERR;
174 }
175 fields = malloc(sizeof(struct scan_field) * num_fields);
176 for (i = 2; i < argc; i += 2) {
177 long bits;
178 int len;
179 const char *str;
180
181 Jim_GetLong(interp, args[i], &bits);
182 str = Jim_GetString(args[i + 1], &len);
183
184 fields[field_count].num_bits = bits;
185 void *t = malloc(DIV_ROUND_UP(bits, 8));
186 fields[field_count].out_value = t;
187 str_to_buf(str, len, t, bits, 0);
188 fields[field_count].in_value = t;
189 field_count++;
190 }
191
192 jtag_add_dr_scan(tap, num_fields, fields, endstate);
193
194 retval = jtag_execute_queue();
195 if (retval != ERROR_OK) {
196 Jim_SetResultString(interp, "drscan: jtag execute failed", -1);
197
198 for (i = 0; i < field_count; i++)
199 free(fields[i].in_value);
200 free(fields);
201
202 return JIM_ERR;
203 }
204
205 field_count = 0;
206 Jim_Obj *list = Jim_NewListObj(interp, NULL, 0);
207 for (i = 2; i < argc; i += 2) {
208 long bits;
209 char *str;
210
211 Jim_GetLong(interp, args[i], &bits);
212 str = buf_to_hex_str(fields[field_count].in_value, bits);
213 free(fields[field_count].in_value);
214
215 Jim_ListAppendElement(interp, list, Jim_NewStringObj(interp, str, strlen(str)));
216 free(str);
217 field_count++;
218 }
219
220 Jim_SetResult(interp, list);
221
222 free(fields);
223
224 return JIM_OK;
225 }
226
227
Jim_Command_pathmove(Jim_Interp * interp,int argc,Jim_Obj * const * args)228 static int Jim_Command_pathmove(Jim_Interp *interp, int argc, Jim_Obj *const *args)
229 {
230 tap_state_t states[8];
231
232 if ((argc < 2) || ((size_t)argc > (ARRAY_SIZE(states) + 1))) {
233 Jim_WrongNumArgs(interp, 1, args, "wrong arguments");
234 return JIM_ERR;
235 }
236
237 script_debug(interp, argc, args);
238
239 int i;
240 for (i = 0; i < argc-1; i++) {
241 const char *cp;
242 cp = Jim_GetString(args[i + 1], NULL);
243 states[i] = tap_state_by_name(cp);
244 if (states[i] < 0) {
245 /* update the error message */
246 Jim_SetResultFormatted(interp, "endstate: %s invalid", cp);
247 return JIM_ERR;
248 }
249 }
250
251 if ((jtag_add_statemove(states[0]) != ERROR_OK) || (jtag_execute_queue() != ERROR_OK)) {
252 Jim_SetResultString(interp, "pathmove: jtag execute failed", -1);
253 return JIM_ERR;
254 }
255
256 jtag_add_pathmove(argc - 2, states + 1);
257
258 if (jtag_execute_queue() != ERROR_OK) {
259 Jim_SetResultString(interp, "pathmove: failed", -1);
260 return JIM_ERR;
261 }
262
263 return JIM_OK;
264 }
265
266
Jim_Command_flush_count(Jim_Interp * interp,int argc,Jim_Obj * const * args)267 static int Jim_Command_flush_count(Jim_Interp *interp, int argc, Jim_Obj *const *args)
268 {
269 script_debug(interp, argc, args);
270
271 Jim_SetResult(interp, Jim_NewIntObj(interp, jtag_get_flush_queue_count()));
272
273 return JIM_OK;
274 }
275
276 /* REVISIT Just what about these should "move" ... ?
277 * These registrations, into the main JTAG table?
278 *
279 * There's a minor compatibility issue, these all show up twice;
280 * that's not desirable:
281 * - jtag drscan ... NOT DOCUMENTED!
282 * - drscan ...
283 *
284 * The "irscan" command (for example) doesn't show twice.
285 */
286 static const struct command_registration jtag_command_handlers_to_move[] = {
287 {
288 .name = "drscan",
289 .mode = COMMAND_EXEC,
290 .jim_handler = Jim_Command_drscan,
291 .help = "Execute Data Register (DR) scan for one TAP. "
292 "Other TAPs must be in BYPASS mode.",
293 .usage = "tap_name [num_bits value]* ['-endstate' state_name]",
294 },
295 {
296 .name = "flush_count",
297 .mode = COMMAND_EXEC,
298 .jim_handler = Jim_Command_flush_count,
299 .help = "Returns the number of times the JTAG queue "
300 "has been flushed.",
301 },
302 {
303 .name = "pathmove",
304 .mode = COMMAND_EXEC,
305 .jim_handler = Jim_Command_pathmove,
306 .usage = "start_state state1 [state2 [state3 ...]]",
307 .help = "Move JTAG state machine from current state "
308 "(start_state) to state1, then state2, state3, etc.",
309 },
310 COMMAND_REGISTRATION_DONE
311 };
312
313
314 enum jtag_tap_cfg_param {
315 JCFG_EVENT,
316 JCFG_IDCODE,
317 };
318
319 static Jim_Nvp nvp_config_opts[] = {
320 { .name = "-event", .value = JCFG_EVENT },
321 { .name = "-idcode", .value = JCFG_IDCODE },
322
323 { .name = NULL, .value = -1 }
324 };
325
jtag_tap_configure_event(Jim_GetOptInfo * goi,struct jtag_tap * tap)326 static int jtag_tap_configure_event(Jim_GetOptInfo *goi, struct jtag_tap *tap)
327 {
328 if (goi->argc == 0) {
329 Jim_WrongNumArgs(goi->interp, goi->argc, goi->argv, "-event <event-name> ...");
330 return JIM_ERR;
331 }
332
333 Jim_Nvp *n;
334 int e = Jim_GetOpt_Nvp(goi, nvp_jtag_tap_event, &n);
335 if (e != JIM_OK) {
336 Jim_GetOpt_NvpUnknown(goi, nvp_jtag_tap_event, 1);
337 return e;
338 }
339
340 if (goi->isconfigure) {
341 if (goi->argc != 1) {
342 Jim_WrongNumArgs(goi->interp,
343 goi->argc,
344 goi->argv,
345 "-event <event-name> <event-body>");
346 return JIM_ERR;
347 }
348 } else {
349 if (goi->argc != 0) {
350 Jim_WrongNumArgs(goi->interp, goi->argc, goi->argv, "-event <event-name>");
351 return JIM_ERR;
352 }
353 }
354
355 struct jtag_tap_event_action *jteap = tap->event_action;
356 /* replace existing event body */
357 bool found = false;
358 while (jteap) {
359 if (jteap->event == (enum jtag_event)n->value) {
360 found = true;
361 break;
362 }
363 jteap = jteap->next;
364 }
365
366 Jim_SetEmptyResult(goi->interp);
367
368 if (goi->isconfigure) {
369 if (!found)
370 jteap = calloc(1, sizeof(*jteap));
371 else if (NULL != jteap->body)
372 Jim_DecrRefCount(goi->interp, jteap->body);
373
374 jteap->interp = goi->interp;
375 jteap->event = n->value;
376
377 Jim_Obj *o;
378 Jim_GetOpt_Obj(goi, &o);
379 jteap->body = Jim_DuplicateObj(goi->interp, o);
380 Jim_IncrRefCount(jteap->body);
381
382 if (!found) {
383 /* add to head of event list */
384 jteap->next = tap->event_action;
385 tap->event_action = jteap;
386 }
387 } else if (found) {
388 jteap->interp = goi->interp;
389 Jim_SetResult(goi->interp,
390 Jim_DuplicateObj(goi->interp, jteap->body));
391 }
392 return JIM_OK;
393 }
394
jtag_tap_configure_cmd(Jim_GetOptInfo * goi,struct jtag_tap * tap)395 static int jtag_tap_configure_cmd(Jim_GetOptInfo *goi, struct jtag_tap *tap)
396 {
397 /* parse config or cget options */
398 while (goi->argc > 0) {
399 Jim_SetEmptyResult(goi->interp);
400
401 Jim_Nvp *n;
402 int e = Jim_GetOpt_Nvp(goi, nvp_config_opts, &n);
403 if (e != JIM_OK) {
404 Jim_GetOpt_NvpUnknown(goi, nvp_config_opts, 0);
405 return e;
406 }
407
408 switch (n->value) {
409 case JCFG_EVENT:
410 e = jtag_tap_configure_event(goi, tap);
411 if (e != JIM_OK)
412 return e;
413 break;
414 case JCFG_IDCODE:
415 if (goi->isconfigure) {
416 Jim_SetResultFormatted(goi->interp,
417 "not settable: %s", n->name);
418 return JIM_ERR;
419 } else {
420 if (goi->argc != 0) {
421 Jim_WrongNumArgs(goi->interp,
422 goi->argc, goi->argv,
423 "NO PARAMS");
424 return JIM_ERR;
425 }
426 }
427 Jim_SetResult(goi->interp, Jim_NewIntObj(goi->interp, tap->idcode));
428 break;
429 default:
430 Jim_SetResultFormatted(goi->interp, "unknown value: %s", n->name);
431 return JIM_ERR;
432 }
433 }
434
435 return JIM_OK;
436 }
437
is_bad_irval(int ir_length,jim_wide w)438 static int is_bad_irval(int ir_length, jim_wide w)
439 {
440 jim_wide v = 1;
441
442 v <<= ir_length;
443 v -= 1;
444 v = ~v;
445 return (w & v) != 0;
446 }
447
jim_newtap_expected_id(Jim_Nvp * n,Jim_GetOptInfo * goi,struct jtag_tap * pTap)448 static int jim_newtap_expected_id(Jim_Nvp *n, Jim_GetOptInfo *goi,
449 struct jtag_tap *pTap)
450 {
451 jim_wide w;
452 int e = Jim_GetOpt_Wide(goi, &w);
453 if (e != JIM_OK) {
454 Jim_SetResultFormatted(goi->interp, "option: %s bad parameter", n->name);
455 return e;
456 }
457
458 uint32_t *p = realloc(pTap->expected_ids,
459 (pTap->expected_ids_cnt + 1) * sizeof(uint32_t));
460 if (!p) {
461 Jim_SetResultFormatted(goi->interp, "no memory");
462 return JIM_ERR;
463 }
464
465 pTap->expected_ids = p;
466 pTap->expected_ids[pTap->expected_ids_cnt++] = w;
467
468 return JIM_OK;
469 }
470
471 #define NTAP_OPT_IRLEN 0
472 #define NTAP_OPT_IRMASK 1
473 #define NTAP_OPT_IRCAPTURE 2
474 #define NTAP_OPT_ENABLED 3
475 #define NTAP_OPT_DISABLED 4
476 #define NTAP_OPT_EXPECTED_ID 5
477 #define NTAP_OPT_VERSION 6
478
jim_newtap_ir_param(Jim_Nvp * n,Jim_GetOptInfo * goi,struct jtag_tap * pTap)479 static int jim_newtap_ir_param(Jim_Nvp *n, Jim_GetOptInfo *goi,
480 struct jtag_tap *pTap)
481 {
482 jim_wide w;
483 int e = Jim_GetOpt_Wide(goi, &w);
484 if (e != JIM_OK) {
485 Jim_SetResultFormatted(goi->interp,
486 "option: %s bad parameter", n->name);
487 return e;
488 }
489 switch (n->value) {
490 case NTAP_OPT_IRLEN:
491 if (w > (jim_wide) (8 * sizeof(pTap->ir_capture_value))) {
492 LOG_WARNING("%s: huge IR length %d",
493 pTap->dotted_name, (int) w);
494 }
495 pTap->ir_length = w;
496 break;
497 case NTAP_OPT_IRMASK:
498 if (is_bad_irval(pTap->ir_length, w)) {
499 LOG_ERROR("%s: IR mask %x too big",
500 pTap->dotted_name,
501 (int) w);
502 return JIM_ERR;
503 }
504 if ((w & 3) != 3)
505 LOG_WARNING("%s: nonstandard IR mask", pTap->dotted_name);
506 pTap->ir_capture_mask = w;
507 break;
508 case NTAP_OPT_IRCAPTURE:
509 if (is_bad_irval(pTap->ir_length, w)) {
510 LOG_ERROR("%s: IR capture %x too big",
511 pTap->dotted_name, (int) w);
512 return JIM_ERR;
513 }
514 if ((w & 3) != 1)
515 LOG_WARNING("%s: nonstandard IR value",
516 pTap->dotted_name);
517 pTap->ir_capture_value = w;
518 break;
519 default:
520 return JIM_ERR;
521 }
522 return JIM_OK;
523 }
524
jim_newtap_cmd(Jim_GetOptInfo * goi)525 static int jim_newtap_cmd(Jim_GetOptInfo *goi)
526 {
527 struct jtag_tap *pTap;
528 int x;
529 int e;
530 Jim_Nvp *n;
531 char *cp;
532 const Jim_Nvp opts[] = {
533 { .name = "-irlen", .value = NTAP_OPT_IRLEN },
534 { .name = "-irmask", .value = NTAP_OPT_IRMASK },
535 { .name = "-ircapture", .value = NTAP_OPT_IRCAPTURE },
536 { .name = "-enable", .value = NTAP_OPT_ENABLED },
537 { .name = "-disable", .value = NTAP_OPT_DISABLED },
538 { .name = "-expected-id", .value = NTAP_OPT_EXPECTED_ID },
539 { .name = "-ignore-version", .value = NTAP_OPT_VERSION },
540 { .name = NULL, .value = -1 },
541 };
542
543 pTap = calloc(1, sizeof(struct jtag_tap));
544 if (!pTap) {
545 Jim_SetResultFormatted(goi->interp, "no memory");
546 return JIM_ERR;
547 }
548
549 /*
550 * we expect CHIP + TAP + OPTIONS
551 * */
552 if (goi->argc < 3) {
553 Jim_SetResultFormatted(goi->interp, "Missing CHIP TAP OPTIONS ....");
554 free(pTap);
555 return JIM_ERR;
556 }
557
558 const char *tmp;
559 Jim_GetOpt_String(goi, &tmp, NULL);
560 pTap->chip = strdup(tmp);
561
562 Jim_GetOpt_String(goi, &tmp, NULL);
563 pTap->tapname = strdup(tmp);
564
565 /* name + dot + name + null */
566 x = strlen(pTap->chip) + 1 + strlen(pTap->tapname) + 1;
567 cp = malloc(x);
568 sprintf(cp, "%s.%s", pTap->chip, pTap->tapname);
569 pTap->dotted_name = cp;
570
571 LOG_DEBUG("Creating New Tap, Chip: %s, Tap: %s, Dotted: %s, %d params",
572 pTap->chip, pTap->tapname, pTap->dotted_name, goi->argc);
573
574 if (!transport_is_jtag()) {
575 /* SWD doesn't require any JTAG tap parameters */
576 pTap->enabled = true;
577 jtag_tap_init(pTap);
578 return JIM_OK;
579 }
580
581 /* IEEE specifies that the two LSBs of an IR scan are 01, so make
582 * that the default. The "-ircapture" and "-irmask" options are only
583 * needed to cope with nonstandard TAPs, or to specify more bits.
584 */
585 pTap->ir_capture_mask = 0x03;
586 pTap->ir_capture_value = 0x01;
587
588 while (goi->argc) {
589 e = Jim_GetOpt_Nvp(goi, opts, &n);
590 if (e != JIM_OK) {
591 Jim_GetOpt_NvpUnknown(goi, opts, 0);
592 free(cp);
593 free(pTap);
594 return e;
595 }
596 LOG_DEBUG("Processing option: %s", n->name);
597 switch (n->value) {
598 case NTAP_OPT_ENABLED:
599 pTap->disabled_after_reset = false;
600 break;
601 case NTAP_OPT_DISABLED:
602 pTap->disabled_after_reset = true;
603 break;
604 case NTAP_OPT_EXPECTED_ID:
605 e = jim_newtap_expected_id(n, goi, pTap);
606 if (JIM_OK != e) {
607 free(cp);
608 free(pTap);
609 return e;
610 }
611 break;
612 case NTAP_OPT_IRLEN:
613 case NTAP_OPT_IRMASK:
614 case NTAP_OPT_IRCAPTURE:
615 e = jim_newtap_ir_param(n, goi, pTap);
616 if (JIM_OK != e) {
617 free(cp);
618 free(pTap);
619 return e;
620 }
621 break;
622 case NTAP_OPT_VERSION:
623 pTap->ignore_version = true;
624 break;
625 } /* switch (n->value) */
626 } /* while (goi->argc) */
627
628 /* default is enabled-after-reset */
629 pTap->enabled = !pTap->disabled_after_reset;
630
631 /* Did all the required option bits get cleared? */
632 if (pTap->ir_length != 0) {
633 jtag_tap_init(pTap);
634 return JIM_OK;
635 }
636
637 Jim_SetResultFormatted(goi->interp,
638 "newtap: %s missing IR length",
639 pTap->dotted_name);
640 jtag_tap_free(pTap);
641 return JIM_ERR;
642 }
643
jtag_tap_handle_event(struct jtag_tap * tap,enum jtag_event e)644 static void jtag_tap_handle_event(struct jtag_tap *tap, enum jtag_event e)
645 {
646 struct jtag_tap_event_action *jteap;
647 int retval;
648
649 for (jteap = tap->event_action; jteap != NULL; jteap = jteap->next) {
650 if (jteap->event != e)
651 continue;
652
653 Jim_Nvp *nvp = Jim_Nvp_value2name_simple(nvp_jtag_tap_event, e);
654 LOG_DEBUG("JTAG tap: %s event: %d (%s)\n\taction: %s",
655 tap->dotted_name, e, nvp->name,
656 Jim_GetString(jteap->body, NULL));
657
658 retval = Jim_EvalObj(jteap->interp, jteap->body);
659 if (retval == JIM_RETURN)
660 retval = jteap->interp->returnCode;
661
662 if (retval != JIM_OK) {
663 Jim_MakeErrorMessage(jteap->interp);
664 LOG_USER("%s", Jim_GetString(Jim_GetResult(jteap->interp), NULL));
665 continue;
666 }
667
668 switch (e) {
669 case JTAG_TAP_EVENT_ENABLE:
670 case JTAG_TAP_EVENT_DISABLE:
671 /* NOTE: we currently assume the handlers
672 * can't fail. Right here is where we should
673 * really be verifying the scan chains ...
674 */
675 tap->enabled = (e == JTAG_TAP_EVENT_ENABLE);
676 LOG_INFO("JTAG tap: %s %s", tap->dotted_name,
677 tap->enabled ? "enabled" : "disabled");
678 break;
679 default:
680 break;
681 }
682 }
683 }
684
jim_jtag_arp_init(Jim_Interp * interp,int argc,Jim_Obj * const * argv)685 static int jim_jtag_arp_init(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
686 {
687 Jim_GetOptInfo goi;
688 Jim_GetOpt_Setup(&goi, interp, argc-1, argv + 1);
689 if (goi.argc != 0) {
690 Jim_WrongNumArgs(goi.interp, 1, goi.argv-1, "(no params)");
691 return JIM_ERR;
692 }
693 struct command_context *context = current_command_context(interp);
694 int e = jtag_init_inner(context);
695 if (e != ERROR_OK) {
696 Jim_Obj *eObj = Jim_NewIntObj(goi.interp, e);
697 Jim_IncrRefCount(eObj);
698 Jim_SetResultFormatted(goi.interp, "error: %#s", eObj);
699 Jim_DecrRefCount(goi.interp, eObj);
700 return JIM_ERR;
701 }
702 return JIM_OK;
703 }
704
jim_jtag_arp_init_reset(Jim_Interp * interp,int argc,Jim_Obj * const * argv)705 static int jim_jtag_arp_init_reset(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
706 {
707 int e = ERROR_OK;
708 Jim_GetOptInfo goi;
709 Jim_GetOpt_Setup(&goi, interp, argc-1, argv + 1);
710 if (goi.argc != 0) {
711 Jim_WrongNumArgs(goi.interp, 1, goi.argv-1, "(no params)");
712 return JIM_ERR;
713 }
714 struct command_context *context = current_command_context(interp);
715 if (transport_is_jtag())
716 e = jtag_init_reset(context);
717 else if (transport_is_swd())
718 e = swd_init_reset(context);
719
720 if (e != ERROR_OK) {
721 Jim_Obj *eObj = Jim_NewIntObj(goi.interp, e);
722 Jim_IncrRefCount(eObj);
723 Jim_SetResultFormatted(goi.interp, "error: %#s", eObj);
724 Jim_DecrRefCount(goi.interp, eObj);
725 return JIM_ERR;
726 }
727 return JIM_OK;
728 }
729
jim_jtag_newtap(Jim_Interp * interp,int argc,Jim_Obj * const * argv)730 int jim_jtag_newtap(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
731 {
732 Jim_GetOptInfo goi;
733 Jim_GetOpt_Setup(&goi, interp, argc-1, argv + 1);
734 return jim_newtap_cmd(&goi);
735 }
736
jtag_tap_enable(struct jtag_tap * t)737 static bool jtag_tap_enable(struct jtag_tap *t)
738 {
739 if (t->enabled)
740 return false;
741 jtag_tap_handle_event(t, JTAG_TAP_EVENT_ENABLE);
742 if (!t->enabled)
743 return false;
744
745 /* FIXME add JTAG sanity checks, w/o TLR
746 * - scan chain length grew by one (this)
747 * - IDs and IR lengths are as expected
748 */
749 jtag_call_event_callbacks(JTAG_TAP_EVENT_ENABLE);
750 return true;
751 }
jtag_tap_disable(struct jtag_tap * t)752 static bool jtag_tap_disable(struct jtag_tap *t)
753 {
754 if (!t->enabled)
755 return false;
756 jtag_tap_handle_event(t, JTAG_TAP_EVENT_DISABLE);
757 if (t->enabled)
758 return false;
759
760 /* FIXME add JTAG sanity checks, w/o TLR
761 * - scan chain length shrank by one (this)
762 * - IDs and IR lengths are as expected
763 */
764 jtag_call_event_callbacks(JTAG_TAP_EVENT_DISABLE);
765 return true;
766 }
767
jim_jtag_tap_enabler(Jim_Interp * interp,int argc,Jim_Obj * const * argv)768 int jim_jtag_tap_enabler(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
769 {
770 const char *cmd_name = Jim_GetString(argv[0], NULL);
771 Jim_GetOptInfo goi;
772 Jim_GetOpt_Setup(&goi, interp, argc-1, argv + 1);
773 if (goi.argc != 1) {
774 Jim_SetResultFormatted(goi.interp, "usage: %s <name>", cmd_name);
775 return JIM_ERR;
776 }
777
778 struct jtag_tap *t;
779
780 t = jtag_tap_by_jim_obj(goi.interp, goi.argv[0]);
781 if (t == NULL)
782 return JIM_ERR;
783
784 if (strcasecmp(cmd_name, "tapisenabled") == 0) {
785 /* do nothing, just return the value */
786 } else if (strcasecmp(cmd_name, "tapenable") == 0) {
787 if (!jtag_tap_enable(t)) {
788 LOG_WARNING("failed to enable tap %s", t->dotted_name);
789 return JIM_ERR;
790 }
791 } else if (strcasecmp(cmd_name, "tapdisable") == 0) {
792 if (!jtag_tap_disable(t)) {
793 LOG_WARNING("failed to disable tap %s", t->dotted_name);
794 return JIM_ERR;
795 }
796 } else {
797 LOG_ERROR("command '%s' unknown", cmd_name);
798 return JIM_ERR;
799 }
800 bool e = t->enabled;
801 Jim_SetResult(goi.interp, Jim_NewIntObj(goi.interp, e));
802 return JIM_OK;
803 }
804
jim_jtag_configure(Jim_Interp * interp,int argc,Jim_Obj * const * argv)805 int jim_jtag_configure(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
806 {
807 const char *cmd_name = Jim_GetString(argv[0], NULL);
808 Jim_GetOptInfo goi;
809 Jim_GetOpt_Setup(&goi, interp, argc-1, argv + 1);
810 goi.isconfigure = !strcmp(cmd_name, "configure");
811 if (goi.argc < 2 + goi.isconfigure) {
812 Jim_WrongNumArgs(goi.interp, 0, NULL,
813 "<tap_name> <attribute> ...");
814 return JIM_ERR;
815 }
816
817 struct jtag_tap *t;
818
819 Jim_Obj *o;
820 Jim_GetOpt_Obj(&goi, &o);
821 t = jtag_tap_by_jim_obj(goi.interp, o);
822 if (t == NULL)
823 return JIM_ERR;
824
825 return jtag_tap_configure_cmd(&goi, t);
826 }
827
jim_jtag_names(Jim_Interp * interp,int argc,Jim_Obj * const * argv)828 static int jim_jtag_names(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
829 {
830 Jim_GetOptInfo goi;
831 Jim_GetOpt_Setup(&goi, interp, argc-1, argv + 1);
832 if (goi.argc != 0) {
833 Jim_WrongNumArgs(goi.interp, 1, goi.argv, "Too many parameters");
834 return JIM_ERR;
835 }
836 Jim_SetResult(goi.interp, Jim_NewListObj(goi.interp, NULL, 0));
837 struct jtag_tap *tap;
838
839 for (tap = jtag_all_taps(); tap; tap = tap->next_tap) {
840 Jim_ListAppendElement(goi.interp,
841 Jim_GetResult(goi.interp),
842 Jim_NewStringObj(goi.interp,
843 tap->dotted_name, -1));
844 }
845 return JIM_OK;
846 }
847
COMMAND_HANDLER(handle_jtag_init_command)848 COMMAND_HANDLER(handle_jtag_init_command)
849 {
850 if (CMD_ARGC != 0)
851 return ERROR_COMMAND_SYNTAX_ERROR;
852
853 static bool jtag_initialized;
854 if (jtag_initialized) {
855 LOG_INFO("'jtag init' has already been called");
856 return ERROR_OK;
857 }
858 jtag_initialized = true;
859
860 LOG_DEBUG("Initializing jtag devices...");
861 return jtag_init(CMD_CTX);
862 }
863
864 static const struct command_registration jtag_subcommand_handlers[] = {
865 {
866 .name = "init",
867 .mode = COMMAND_ANY,
868 .handler = handle_jtag_init_command,
869 .help = "initialize jtag scan chain",
870 .usage = ""
871 },
872 {
873 .name = "arp_init",
874 .mode = COMMAND_ANY,
875 .jim_handler = jim_jtag_arp_init,
876 .help = "Validates JTAG scan chain against the list of "
877 "declared TAPs using just the four standard JTAG "
878 "signals.",
879 },
880 {
881 .name = "arp_init-reset",
882 .mode = COMMAND_ANY,
883 .jim_handler = jim_jtag_arp_init_reset,
884 .help = "Uses TRST and SRST to try resetting everything on "
885 "the JTAG scan chain, then performs 'jtag arp_init'."
886 },
887 {
888 .name = "newtap",
889 .mode = COMMAND_CONFIG,
890 .jim_handler = jim_jtag_newtap,
891 .help = "Create a new TAP instance named basename.tap_type, "
892 "and appends it to the scan chain.",
893 .usage = "basename tap_type '-irlen' count "
894 "['-enable'|'-disable'] "
895 "['-expected_id' number] "
896 "['-ignore-version'] "
897 "['-ircapture' number] "
898 "['-mask' number] ",
899 },
900 {
901 .name = "tapisenabled",
902 .mode = COMMAND_EXEC,
903 .jim_handler = jim_jtag_tap_enabler,
904 .help = "Returns a Tcl boolean (0/1) indicating whether "
905 "the TAP is enabled (1) or not (0).",
906 .usage = "tap_name",
907 },
908 {
909 .name = "tapenable",
910 .mode = COMMAND_EXEC,
911 .jim_handler = jim_jtag_tap_enabler,
912 .help = "Try to enable the specified TAP using the "
913 "'tap-enable' TAP event.",
914 .usage = "tap_name",
915 },
916 {
917 .name = "tapdisable",
918 .mode = COMMAND_EXEC,
919 .jim_handler = jim_jtag_tap_enabler,
920 .help = "Try to disable the specified TAP using the "
921 "'tap-disable' TAP event.",
922 .usage = "tap_name",
923 },
924 {
925 .name = "configure",
926 .mode = COMMAND_ANY,
927 .jim_handler = jim_jtag_configure,
928 .help = "Provide a Tcl handler for the specified "
929 "TAP event.",
930 .usage = "tap_name '-event' event_name handler",
931 },
932 {
933 .name = "cget",
934 .mode = COMMAND_EXEC,
935 .jim_handler = jim_jtag_configure,
936 .help = "Return any Tcl handler for the specified "
937 "TAP event.",
938 .usage = "tap_name '-event' event_name",
939 },
940 {
941 .name = "names",
942 .mode = COMMAND_ANY,
943 .jim_handler = jim_jtag_names,
944 .help = "Returns list of all JTAG tap names.",
945 },
946 {
947 .chain = jtag_command_handlers_to_move,
948 },
949 COMMAND_REGISTRATION_DONE
950 };
951
jtag_notify_event(enum jtag_event event)952 void jtag_notify_event(enum jtag_event event)
953 {
954 struct jtag_tap *tap;
955
956 for (tap = jtag_all_taps(); tap; tap = tap->next_tap)
957 jtag_tap_handle_event(tap, event);
958 }
959
960
COMMAND_HANDLER(handle_scan_chain_command)961 COMMAND_HANDLER(handle_scan_chain_command)
962 {
963 struct jtag_tap *tap;
964 char expected_id[12];
965
966 tap = jtag_all_taps();
967 command_print(CMD,
968 " TapName Enabled IdCode Expected IrLen IrCap IrMask");
969 command_print(CMD,
970 "-- ------------------- -------- ---------- ---------- ----- ----- ------");
971
972 while (tap) {
973 uint32_t expected, expected_mask, ii;
974
975 snprintf(expected_id, sizeof(expected_id), "0x%08x",
976 (unsigned)((tap->expected_ids_cnt > 0)
977 ? tap->expected_ids[0]
978 : 0));
979 if (tap->ignore_version)
980 expected_id[2] = '*';
981
982 expected = buf_get_u32(tap->expected, 0, tap->ir_length);
983 expected_mask = buf_get_u32(tap->expected_mask, 0, tap->ir_length);
984
985 command_print(CMD,
986 "%2d %-18s %c 0x%08x %s %5d 0x%02x 0x%02x",
987 tap->abs_chain_position,
988 tap->dotted_name,
989 tap->enabled ? 'Y' : 'n',
990 (unsigned int)(tap->idcode),
991 expected_id,
992 (unsigned int)(tap->ir_length),
993 (unsigned int)(expected),
994 (unsigned int)(expected_mask));
995
996 for (ii = 1; ii < tap->expected_ids_cnt; ii++) {
997 snprintf(expected_id, sizeof(expected_id), "0x%08x",
998 (unsigned) tap->expected_ids[ii]);
999 if (tap->ignore_version)
1000 expected_id[2] = '*';
1001
1002 command_print(CMD,
1003 " %s",
1004 expected_id);
1005 }
1006
1007 tap = tap->next_tap;
1008 }
1009
1010 return ERROR_OK;
1011 }
1012
COMMAND_HANDLER(handle_jtag_ntrst_delay_command)1013 COMMAND_HANDLER(handle_jtag_ntrst_delay_command)
1014 {
1015 if (CMD_ARGC > 1)
1016 return ERROR_COMMAND_SYNTAX_ERROR;
1017 if (CMD_ARGC == 1) {
1018 unsigned delay;
1019 COMMAND_PARSE_NUMBER(uint, CMD_ARGV[0], delay);
1020
1021 jtag_set_ntrst_delay(delay);
1022 }
1023 command_print(CMD, "jtag_ntrst_delay: %u", jtag_get_ntrst_delay());
1024 return ERROR_OK;
1025 }
1026
COMMAND_HANDLER(handle_jtag_ntrst_assert_width_command)1027 COMMAND_HANDLER(handle_jtag_ntrst_assert_width_command)
1028 {
1029 if (CMD_ARGC > 1)
1030 return ERROR_COMMAND_SYNTAX_ERROR;
1031 if (CMD_ARGC == 1) {
1032 unsigned delay;
1033 COMMAND_PARSE_NUMBER(uint, CMD_ARGV[0], delay);
1034
1035 jtag_set_ntrst_assert_width(delay);
1036 }
1037 command_print(CMD, "jtag_ntrst_assert_width: %u", jtag_get_ntrst_assert_width());
1038 return ERROR_OK;
1039 }
1040
COMMAND_HANDLER(handle_jtag_rclk_command)1041 COMMAND_HANDLER(handle_jtag_rclk_command)
1042 {
1043 if (CMD_ARGC > 1)
1044 return ERROR_COMMAND_SYNTAX_ERROR;
1045
1046 int retval = ERROR_OK;
1047 if (CMD_ARGC == 1) {
1048 unsigned khz = 0;
1049 COMMAND_PARSE_NUMBER(uint, CMD_ARGV[0], khz);
1050
1051 retval = jtag_config_rclk(khz);
1052 if (ERROR_OK != retval)
1053 return retval;
1054 }
1055
1056 int cur_khz = jtag_get_speed_khz();
1057 retval = jtag_get_speed_readable(&cur_khz);
1058 if (ERROR_OK != retval)
1059 return retval;
1060
1061 if (cur_khz)
1062 command_print(CMD, "RCLK not supported - fallback to %d kHz", cur_khz);
1063 else
1064 command_print(CMD, "RCLK - adaptive");
1065
1066 return retval;
1067 }
1068
COMMAND_HANDLER(handle_runtest_command)1069 COMMAND_HANDLER(handle_runtest_command)
1070 {
1071 if (CMD_ARGC != 1)
1072 return ERROR_COMMAND_SYNTAX_ERROR;
1073
1074 unsigned num_clocks;
1075 COMMAND_PARSE_NUMBER(uint, CMD_ARGV[0], num_clocks);
1076
1077 jtag_add_runtest(num_clocks, TAP_IDLE);
1078 return jtag_execute_queue();
1079 }
1080
1081 /*
1082 * For "irscan" or "drscan" commands, the "end" (really, "next") state
1083 * should be stable ... and *NOT* a shift state, otherwise free-running
1084 * jtag clocks could change the values latched by the update state.
1085 * Not surprisingly, this is the same constraint as SVF; the "irscan"
1086 * and "drscan" commands are a write-only subset of what SVF provides.
1087 */
1088
COMMAND_HANDLER(handle_irscan_command)1089 COMMAND_HANDLER(handle_irscan_command)
1090 {
1091 int i;
1092 struct scan_field *fields;
1093 struct jtag_tap *tap = NULL;
1094 tap_state_t endstate;
1095
1096 if ((CMD_ARGC < 2) || (CMD_ARGC % 2))
1097 return ERROR_COMMAND_SYNTAX_ERROR;
1098
1099 /* optional "-endstate" "statename" at the end of the arguments,
1100 * so that e.g. IRPAUSE can let us load the data register before
1101 * entering RUN/IDLE to execute the instruction we load here.
1102 */
1103 endstate = TAP_IDLE;
1104
1105 if (CMD_ARGC >= 4) {
1106 /* have at least one pair of numbers.
1107 * is last pair the magic text? */
1108 if (strcmp("-endstate", CMD_ARGV[CMD_ARGC - 2]) == 0) {
1109 endstate = tap_state_by_name(CMD_ARGV[CMD_ARGC - 1]);
1110 if (endstate == TAP_INVALID)
1111 return ERROR_COMMAND_SYNTAX_ERROR;
1112 if (!scan_is_safe(endstate))
1113 LOG_WARNING("unstable irscan endstate \"%s\"",
1114 CMD_ARGV[CMD_ARGC - 1]);
1115 CMD_ARGC -= 2;
1116 }
1117 }
1118
1119 int num_fields = CMD_ARGC / 2;
1120 if (num_fields > 1) {
1121 /* we really should be looking at plain_ir_scan if we want
1122 * anything more fancy.
1123 */
1124 LOG_ERROR("Specify a single value for tap");
1125 return ERROR_COMMAND_SYNTAX_ERROR;
1126 }
1127
1128 fields = calloc(num_fields, sizeof(*fields));
1129
1130 int retval;
1131 for (i = 0; i < num_fields; i++) {
1132 tap = jtag_tap_by_string(CMD_ARGV[i*2]);
1133 if (tap == NULL) {
1134 free(fields);
1135 command_print(CMD, "Tap: %s unknown", CMD_ARGV[i*2]);
1136
1137 return ERROR_FAIL;
1138 }
1139 uint64_t value;
1140 retval = parse_u64(CMD_ARGV[i * 2 + 1], &value);
1141 if (ERROR_OK != retval)
1142 goto error_return;
1143
1144 int field_size = tap->ir_length;
1145 fields[i].num_bits = field_size;
1146 uint8_t *v = calloc(1, DIV_ROUND_UP(field_size, 8));
1147 if (!v) {
1148 LOG_ERROR("Out of memory");
1149 goto error_return;
1150 }
1151
1152 buf_set_u64(v, 0, field_size, value);
1153 fields[i].out_value = v;
1154 fields[i].in_value = NULL;
1155 }
1156
1157 /* did we have an endstate? */
1158 jtag_add_ir_scan(tap, fields, endstate);
1159
1160 retval = jtag_execute_queue();
1161
1162 error_return:
1163 for (i = 0; i < num_fields; i++)
1164 free((void *)fields[i].out_value);
1165
1166 free(fields);
1167
1168 return retval;
1169 }
1170
COMMAND_HANDLER(handle_verify_ircapture_command)1171 COMMAND_HANDLER(handle_verify_ircapture_command)
1172 {
1173 if (CMD_ARGC > 1)
1174 return ERROR_COMMAND_SYNTAX_ERROR;
1175
1176 if (CMD_ARGC == 1) {
1177 bool enable;
1178 COMMAND_PARSE_ENABLE(CMD_ARGV[0], enable);
1179 jtag_set_verify_capture_ir(enable);
1180 }
1181
1182 const char *status = jtag_will_verify_capture_ir() ? "enabled" : "disabled";
1183 command_print(CMD, "verify Capture-IR is %s", status);
1184
1185 return ERROR_OK;
1186 }
1187
COMMAND_HANDLER(handle_verify_jtag_command)1188 COMMAND_HANDLER(handle_verify_jtag_command)
1189 {
1190 if (CMD_ARGC > 1)
1191 return ERROR_COMMAND_SYNTAX_ERROR;
1192
1193 if (CMD_ARGC == 1) {
1194 bool enable;
1195 COMMAND_PARSE_ENABLE(CMD_ARGV[0], enable);
1196 jtag_set_verify(enable);
1197 }
1198
1199 const char *status = jtag_will_verify() ? "enabled" : "disabled";
1200 command_print(CMD, "verify jtag capture is %s", status);
1201
1202 return ERROR_OK;
1203 }
1204
COMMAND_HANDLER(handle_tms_sequence_command)1205 COMMAND_HANDLER(handle_tms_sequence_command)
1206 {
1207 if (CMD_ARGC > 1)
1208 return ERROR_COMMAND_SYNTAX_ERROR;
1209
1210 if (CMD_ARGC == 1) {
1211 bool use_new_table;
1212 if (strcmp(CMD_ARGV[0], "short") == 0)
1213 use_new_table = true;
1214 else if (strcmp(CMD_ARGV[0], "long") == 0)
1215 use_new_table = false;
1216 else
1217 return ERROR_COMMAND_SYNTAX_ERROR;
1218
1219 tap_use_new_tms_table(use_new_table);
1220 }
1221
1222 command_print(CMD, "tms sequence is %s",
1223 tap_uses_new_tms_table() ? "short" : "long");
1224
1225 return ERROR_OK;
1226 }
1227
COMMAND_HANDLER(handle_jtag_flush_queue_sleep)1228 COMMAND_HANDLER(handle_jtag_flush_queue_sleep)
1229 {
1230 if (CMD_ARGC != 1)
1231 return ERROR_COMMAND_SYNTAX_ERROR;
1232
1233 int sleep_ms;
1234 COMMAND_PARSE_NUMBER(int, CMD_ARGV[0], sleep_ms);
1235
1236 jtag_set_flush_queue_sleep(sleep_ms);
1237
1238 return ERROR_OK;
1239 }
1240
COMMAND_HANDLER(handle_wait_srst_deassert)1241 COMMAND_HANDLER(handle_wait_srst_deassert)
1242 {
1243 if (CMD_ARGC != 1)
1244 return ERROR_COMMAND_SYNTAX_ERROR;
1245
1246 int timeout_ms;
1247 COMMAND_PARSE_NUMBER(int, CMD_ARGV[0], timeout_ms);
1248 if ((timeout_ms <= 0) || (timeout_ms > 100000)) {
1249 LOG_ERROR("Timeout must be an integer between 0 and 100000");
1250 return ERROR_FAIL;
1251 }
1252
1253 LOG_USER("Waiting for srst assert + deassert for at most %dms", timeout_ms);
1254 int asserted_yet;
1255 int64_t then = timeval_ms();
1256 while (jtag_srst_asserted(&asserted_yet) == ERROR_OK) {
1257 if ((timeval_ms() - then) > timeout_ms) {
1258 LOG_ERROR("Timed out");
1259 return ERROR_FAIL;
1260 }
1261 if (asserted_yet)
1262 break;
1263 }
1264 while (jtag_srst_asserted(&asserted_yet) == ERROR_OK) {
1265 if ((timeval_ms() - then) > timeout_ms) {
1266 LOG_ERROR("Timed out");
1267 return ERROR_FAIL;
1268 }
1269 if (!asserted_yet)
1270 break;
1271 }
1272
1273 return ERROR_OK;
1274 }
1275
1276 static const struct command_registration jtag_command_handlers[] = {
1277
1278 {
1279 .name = "jtag_flush_queue_sleep",
1280 .handler = handle_jtag_flush_queue_sleep,
1281 .mode = COMMAND_ANY,
1282 .help = "For debug purposes(simulate long delays of interface) "
1283 "to test performance or change in behavior. Default 0ms.",
1284 .usage = "[sleep in ms]",
1285 },
1286 {
1287 .name = "jtag_rclk",
1288 .handler = handle_jtag_rclk_command,
1289 .mode = COMMAND_ANY,
1290 .help = "With an argument, change to to use adaptive clocking "
1291 "if possible; else to use the fallback speed. "
1292 "With or without argument, display current setting.",
1293 .usage = "[fallback_speed_khz]",
1294 },
1295 {
1296 .name = "jtag_ntrst_delay",
1297 .handler = handle_jtag_ntrst_delay_command,
1298 .mode = COMMAND_ANY,
1299 .help = "delay after deasserting trst in ms",
1300 .usage = "[milliseconds]",
1301 },
1302 {
1303 .name = "jtag_ntrst_assert_width",
1304 .handler = handle_jtag_ntrst_assert_width_command,
1305 .mode = COMMAND_ANY,
1306 .help = "delay after asserting trst in ms",
1307 .usage = "[milliseconds]",
1308 },
1309 {
1310 .name = "scan_chain",
1311 .handler = handle_scan_chain_command,
1312 .mode = COMMAND_ANY,
1313 .help = "print current scan chain configuration",
1314 .usage = ""
1315 },
1316 {
1317 .name = "runtest",
1318 .handler = handle_runtest_command,
1319 .mode = COMMAND_EXEC,
1320 .help = "Move to Run-Test/Idle, and issue TCK for num_cycles.",
1321 .usage = "num_cycles"
1322 },
1323 {
1324 .name = "irscan",
1325 .handler = handle_irscan_command,
1326 .mode = COMMAND_EXEC,
1327 .help = "Execute Instruction Register (IR) scan. The "
1328 "specified opcodes are put into each TAP's IR, "
1329 "and other TAPs are put in BYPASS.",
1330 .usage = "[tap_name instruction]* ['-endstate' state_name]",
1331 },
1332 {
1333 .name = "verify_ircapture",
1334 .handler = handle_verify_ircapture_command,
1335 .mode = COMMAND_ANY,
1336 .help = "Display or assign flag controlling whether to "
1337 "verify values captured during Capture-IR.",
1338 .usage = "['enable'|'disable']",
1339 },
1340 {
1341 .name = "verify_jtag",
1342 .handler = handle_verify_jtag_command,
1343 .mode = COMMAND_ANY,
1344 .help = "Display or assign flag controlling whether to "
1345 "verify values captured during IR and DR scans.",
1346 .usage = "['enable'|'disable']",
1347 },
1348 {
1349 .name = "tms_sequence",
1350 .handler = handle_tms_sequence_command,
1351 .mode = COMMAND_ANY,
1352 .help = "Display or change what style TMS sequences to use "
1353 "for JTAG state transitions: short (default) or "
1354 "long. Only for working around JTAG bugs.",
1355 /* Specifically for working around DRIVER bugs... */
1356 .usage = "['short'|'long']",
1357 },
1358 {
1359 .name = "wait_srst_deassert",
1360 .handler = handle_wait_srst_deassert,
1361 .mode = COMMAND_ANY,
1362 .help = "Wait for an SRST deassert. "
1363 "Useful for cases where you need something to happen within ms "
1364 "of an srst deassert. Timeout in ms ",
1365 .usage = "ms",
1366 },
1367 {
1368 .name = "jtag",
1369 .mode = COMMAND_ANY,
1370 .help = "perform jtag tap actions",
1371 .usage = "",
1372
1373 .chain = jtag_subcommand_handlers,
1374 },
1375 {
1376 .chain = jtag_command_handlers_to_move,
1377 },
1378 COMMAND_REGISTRATION_DONE
1379 };
1380
jtag_register_commands(struct command_context * cmd_ctx)1381 int jtag_register_commands(struct command_context *cmd_ctx)
1382 {
1383 return register_commands(cmd_ctx, NULL, jtag_command_handlers);
1384 }
1385