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Factoring of jtag_examine_chain for maintainability:
[openocd.git] / src / jtag / jtag.c
1 /***************************************************************************
2 * Copyright (C) 2005 by Dominic Rath *
3 * Dominic.Rath@gmx.de *
4 * *
5 * Copyright (C) 2007,2008 Øyvind Harboe *
6 * oyvind.harboe@zylin.com *
7 * *
8 * Copyright (C) 2009 SoftPLC Corporation *
9 * http://softplc.com *
10 * dick@softplc.com *
11 * *
12 * This program is free software; you can redistribute it and/or modify *
13 * it under the terms of the GNU General Public License as published by *
14 * the Free Software Foundation; either version 2 of the License, or *
15 * (at your option) any later version. *
16 * *
17 * This program is distributed in the hope that it will be useful, *
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
20 * GNU General Public License for more details. *
21 * *
22 * You should have received a copy of the GNU General Public License *
23 * along with this program; if not, write to the *
24 * Free Software Foundation, Inc., *
25 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
26 ***************************************************************************/
27 #ifdef HAVE_CONFIG_H
28 #include "config.h"
29 #endif
30
31 #include "jtag.h"
32 #include "minidriver.h"
33 #include "interface.h"
34
35 #ifdef HAVE_STRINGS_H
36 #include <strings.h>
37 #endif
38
39
40 /// The number of JTAG queue flushes (for profiling and debugging purposes).
41 static int jtag_flush_queue_count;
42
43 static void jtag_add_scan_check(void (*jtag_add_scan)(int in_num_fields, const scan_field_t *in_fields, tap_state_t state),
44 int in_num_fields, scan_field_t *in_fields, tap_state_t state);
45
46 /* note that this is not marked as static as it must be available from outside jtag.c for those
47 that implement the jtag_xxx() minidriver layer
48 */
49 int jtag_error=ERROR_OK;
50
51 char* jtag_event_strings[] =
52 {
53 "JTAG controller reset (RESET or TRST)"
54 };
55
56 const Jim_Nvp nvp_jtag_tap_event[] = {
57 { .value = JTAG_TAP_EVENT_ENABLE, .name = "tap-enable" },
58 { .value = JTAG_TAP_EVENT_DISABLE, .name = "tap-disable" },
59
60 { .name = NULL, .value = -1 }
61 };
62
63 int jtag_trst = 0;
64 int jtag_srst = 0;
65
66 /**
67 * List all TAPs that have been created.
68 */
69 static jtag_tap_t *__jtag_all_taps = NULL;
70 /**
71 * The number of TAPs in the __jtag_all_taps list, used to track the
72 * assigned chain position to new TAPs
73 */
74 static int jtag_num_taps = 0;
75
76 enum reset_types jtag_reset_config = RESET_NONE;
77 tap_state_t cmd_queue_end_state = TAP_RESET;
78 tap_state_t cmd_queue_cur_state = TAP_RESET;
79
80 int jtag_verify_capture_ir = 1;
81 int jtag_verify = 1;
82
83 /* how long the OpenOCD should wait before attempting JTAG communication after reset lines deasserted (in ms) */
84 static int jtag_nsrst_delay = 0; /* default to no nSRST delay */
85 static int jtag_ntrst_delay = 0; /* default to no nTRST delay */
86
87 /* callbacks to inform high-level handlers about JTAG state changes */
88 jtag_event_callback_t *jtag_event_callbacks;
89
90 /* speed in kHz*/
91 static int speed_khz = 0;
92 /* flag if the kHz speed was defined */
93 static bool hasKHz = false;
94
95 /* jtag interfaces (parport, FTDI-USB, TI-USB, ...)
96 */
97
98 #if BUILD_ECOSBOARD == 1
99 extern jtag_interface_t zy1000_interface;
100 #endif
101
102 #if BUILD_PARPORT == 1
103 extern jtag_interface_t parport_interface;
104 #endif
105
106 #if BUILD_DUMMY == 1
107 extern jtag_interface_t dummy_interface;
108 #endif
109
110 #if BUILD_FT2232_FTD2XX == 1
111 extern jtag_interface_t ft2232_interface;
112 #endif
113
114 #if BUILD_FT2232_LIBFTDI == 1
115 extern jtag_interface_t ft2232_interface;
116 #endif
117
118 #if BUILD_AMTJTAGACCEL == 1
119 extern jtag_interface_t amt_jtagaccel_interface;
120 #endif
121
122 #if BUILD_EP93XX == 1
123 extern jtag_interface_t ep93xx_interface;
124 #endif
125
126 #if BUILD_AT91RM9200 == 1
127 extern jtag_interface_t at91rm9200_interface;
128 #endif
129
130 #if BUILD_GW16012 == 1
131 extern jtag_interface_t gw16012_interface;
132 #endif
133
134 #if BUILD_PRESTO_LIBFTDI == 1 || BUILD_PRESTO_FTD2XX == 1
135 extern jtag_interface_t presto_interface;
136 #endif
137
138 #if BUILD_USBPROG == 1
139 extern jtag_interface_t usbprog_interface;
140 #endif
141
142 #if BUILD_JLINK == 1
143 extern jtag_interface_t jlink_interface;
144 #endif
145
146 #if BUILD_VSLLINK == 1
147 extern jtag_interface_t vsllink_interface;
148 #endif
149
150 #if BUILD_RLINK == 1
151 extern jtag_interface_t rlink_interface;
152 #endif
153
154 #if BUILD_ARMJTAGEW == 1
155 extern jtag_interface_t armjtagew_interface;
156 #endif
157
158 jtag_interface_t *jtag_interfaces[] = {
159 #if BUILD_ECOSBOARD == 1
160 &zy1000_interface,
161 #endif
162 #if BUILD_PARPORT == 1
163 &parport_interface,
164 #endif
165 #if BUILD_DUMMY == 1
166 &dummy_interface,
167 #endif
168 #if BUILD_FT2232_FTD2XX == 1
169 &ft2232_interface,
170 #endif
171 #if BUILD_FT2232_LIBFTDI == 1
172 &ft2232_interface,
173 #endif
174 #if BUILD_AMTJTAGACCEL == 1
175 &amt_jtagaccel_interface,
176 #endif
177 #if BUILD_EP93XX == 1
178 &ep93xx_interface,
179 #endif
180 #if BUILD_AT91RM9200 == 1
181 &at91rm9200_interface,
182 #endif
183 #if BUILD_GW16012 == 1
184 &gw16012_interface,
185 #endif
186 #if BUILD_PRESTO_LIBFTDI == 1 || BUILD_PRESTO_FTD2XX == 1
187 &presto_interface,
188 #endif
189 #if BUILD_USBPROG == 1
190 &usbprog_interface,
191 #endif
192 #if BUILD_JLINK == 1
193 &jlink_interface,
194 #endif
195 #if BUILD_VSLLINK == 1
196 &vsllink_interface,
197 #endif
198 #if BUILD_RLINK == 1
199 &rlink_interface,
200 #endif
201 #if BUILD_ARMJTAGEW == 1
202 &armjtagew_interface,
203 #endif
204 NULL,
205 };
206
207 struct jtag_interface_s *jtag = NULL;
208
209 /* configuration */
210 static jtag_interface_t *jtag_interface = NULL;
211 int jtag_speed = 0;
212
213 /* jtag commands */
214 static int handle_interface_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
215 static int handle_jtag_speed_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
216 static int handle_jtag_khz_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
217 static int handle_jtag_device_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
218 static int handle_reset_config_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
219 static int handle_jtag_nsrst_delay_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
220 static int handle_jtag_ntrst_delay_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
221
222 static int handle_scan_chain_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
223
224 static int handle_endstate_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
225 static int handle_jtag_reset_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
226 static int handle_runtest_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
227 static int handle_irscan_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
228 static int Jim_Command_drscan(Jim_Interp *interp, int argc, Jim_Obj *const *argv);
229 static int Jim_Command_flush_count(Jim_Interp *interp, int argc, Jim_Obj *const *args);
230
231 static int handle_verify_ircapture_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
232 static int handle_verify_jtag_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
233 static int handle_tms_sequence_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
234
235 jtag_tap_t *jtag_all_taps(void)
236 {
237 return __jtag_all_taps;
238 };
239
240 int jtag_tap_count(void)
241 {
242 return jtag_num_taps;
243 }
244
245 int jtag_tap_count_enabled(void)
246 {
247 jtag_tap_t *t;
248 int n;
249
250 n = 0;
251 t = jtag_all_taps();
252 while(t){
253 if( t->enabled ){
254 n++;
255 }
256 t = t->next_tap;
257 }
258 return n;
259 }
260
261 /// Append a new TAP to the chain of all taps.
262 static void jtag_tap_add(struct jtag_tap_s *t)
263 {
264 t->abs_chain_position = jtag_num_taps++;
265
266 jtag_tap_t **tap = &__jtag_all_taps;
267 while(*tap != NULL)
268 tap = &(*tap)->next_tap;
269 *tap = t;
270 }
271
272 jtag_tap_t *jtag_tap_by_string( const char *s )
273 {
274 jtag_tap_t *t;
275 char *cp;
276
277 t = jtag_all_taps();
278 /* try name first */
279 while(t){
280 if( 0 == strcmp( t->dotted_name, s ) ){
281 break;
282 } else {
283 t = t->next_tap;
284 }
285 }
286 /* backup plan is by number */
287 if( t == NULL ){
288 /* ok - is "s" a number? */
289 int n;
290 n = strtol( s, &cp, 0 );
291 if( (s != cp) && (*cp == 0) ){
292 /* Then it is... */
293 t = jtag_tap_by_abs_position(n);
294 }
295 }
296 return t;
297 }
298
299 jtag_tap_t * jtag_tap_by_jim_obj( Jim_Interp *interp, Jim_Obj *o )
300 {
301 jtag_tap_t *t;
302 const char *cp;
303
304 cp = Jim_GetString( o, NULL );
305 if(cp == NULL){
306 cp = "(unknown)";
307 t = NULL;
308 } else {
309 t = jtag_tap_by_string( cp );
310 }
311 if( t == NULL ){
312 Jim_SetResult_sprintf(interp,"Tap: %s is unknown", cp );
313 }
314 return t;
315 }
316
317 /* returns a pointer to the n-th device in the scan chain */
318 jtag_tap_t * jtag_tap_by_abs_position( int n )
319 {
320 int orig_n;
321 jtag_tap_t *t;
322
323 orig_n = n;
324 t = jtag_all_taps();
325
326 while( t && (n > 0)) {
327 n--;
328 t = t->next_tap;
329 }
330 return t;
331 }
332
333 const char *jtag_tap_name(const jtag_tap_t *tap)
334 {
335 return (tap == NULL) ? "(unknown)" : tap->dotted_name;
336 }
337
338
339 int jtag_register_event_callback(int (*callback)(enum jtag_event event, void *priv), void *priv)
340 {
341 jtag_event_callback_t **callbacks_p = &jtag_event_callbacks;
342
343 if (callback == NULL)
344 {
345 return ERROR_INVALID_ARGUMENTS;
346 }
347
348 if (*callbacks_p)
349 {
350 while ((*callbacks_p)->next)
351 callbacks_p = &((*callbacks_p)->next);
352 callbacks_p = &((*callbacks_p)->next);
353 }
354
355 (*callbacks_p) = malloc(sizeof(jtag_event_callback_t));
356 (*callbacks_p)->callback = callback;
357 (*callbacks_p)->priv = priv;
358 (*callbacks_p)->next = NULL;
359
360 return ERROR_OK;
361 }
362
363 int jtag_unregister_event_callback(int (*callback)(enum jtag_event event, void *priv))
364 {
365 jtag_event_callback_t **callbacks_p = &jtag_event_callbacks;
366
367 if (callback == NULL)
368 {
369 return ERROR_INVALID_ARGUMENTS;
370 }
371
372 while (*callbacks_p)
373 {
374 jtag_event_callback_t **next = &((*callbacks_p)->next);
375 if ((*callbacks_p)->callback == callback)
376 {
377 free(*callbacks_p);
378 *callbacks_p = *next;
379 }
380 callbacks_p = next;
381 }
382
383 return ERROR_OK;
384 }
385
386 int jtag_call_event_callbacks(enum jtag_event event)
387 {
388 jtag_event_callback_t *callback = jtag_event_callbacks;
389
390 LOG_DEBUG("jtag event: %s", jtag_event_strings[event]);
391
392 while (callback)
393 {
394 callback->callback(event, callback->priv);
395 callback = callback->next;
396 }
397
398 return ERROR_OK;
399 }
400
401 static void jtag_checks(void)
402 {
403 assert(jtag_trst == 0);
404 }
405
406 static void jtag_prelude(tap_state_t state)
407 {
408 jtag_checks();
409
410 assert(state!=TAP_INVALID);
411
412 cmd_queue_cur_state = state;
413 }
414
415 void jtag_alloc_in_value32(scan_field_t *field)
416 {
417 interface_jtag_alloc_in_value32(field);
418 }
419
420 void jtag_add_ir_scan_noverify(int in_num_fields, const scan_field_t *in_fields, tap_state_t state)
421 {
422 int retval;
423 jtag_prelude(state);
424
425 retval=interface_jtag_add_ir_scan(in_num_fields, in_fields, state);
426 if (retval!=ERROR_OK)
427 jtag_error=retval;
428
429 }
430
431
432 /**
433 * Generate an IR SCAN with a list of scan fields with one entry for each enabled TAP.
434 *
435 * If the input field list contains an instruction value for a TAP then that is used
436 * otherwise the TAP is set to bypass.
437 *
438 * TAPs for which no fields are passed are marked as bypassed for subsequent DR SCANs.
439 *
440 */
441 void jtag_add_ir_scan(int in_num_fields, scan_field_t *in_fields, tap_state_t state)
442 {
443 if (jtag_verify&&jtag_verify_capture_ir)
444 {
445 /* 8 x 32 bit id's is enough for all invocations */
446
447 for (int j = 0; j < in_num_fields; j++)
448 {
449 /* if we are to run a verification of the ir scan, we need to get the input back.
450 * We may have to allocate space if the caller didn't ask for the input back.
451 */
452 in_fields[j].check_value=in_fields[j].tap->expected;
453 in_fields[j].check_mask=in_fields[j].tap->expected_mask;
454 }
455 jtag_add_scan_check(jtag_add_ir_scan_noverify, in_num_fields, in_fields, state);
456 } else
457 {
458 jtag_add_ir_scan_noverify(in_num_fields, in_fields, state);
459 }
460 }
461
462 /**
463 * Duplicate the scan fields passed into the function into an IR SCAN command
464 *
465 * This function assumes that the caller handles extra fields for bypassed TAPs
466 *
467 */
468 void jtag_add_plain_ir_scan(int in_num_fields, const scan_field_t *in_fields, tap_state_t state)
469 {
470 int retval;
471
472 jtag_prelude(state);
473
474 retval=interface_jtag_add_plain_ir_scan(in_num_fields, in_fields, state);
475 if (retval!=ERROR_OK)
476 jtag_error=retval;
477 }
478
479 void jtag_add_callback(jtag_callback1_t f, u8 *in)
480 {
481 interface_jtag_add_callback(f, in);
482 }
483
484 void jtag_add_callback4(jtag_callback_t f, u8 *in,
485 jtag_callback_data_t data1, jtag_callback_data_t data2,
486 jtag_callback_data_t data3)
487 {
488 interface_jtag_add_callback4(f, in, data1, data2, data3);
489 }
490
491 int jtag_check_value_inner(u8 *captured, u8 *in_check_value, u8 *in_check_mask, int num_bits);
492
493 static int jtag_check_value_mask_callback(u8 *in, jtag_callback_data_t data1, jtag_callback_data_t data2, jtag_callback_data_t data3)
494 {
495 return jtag_check_value_inner(in, (u8 *)data1, (u8 *)data2, (int)data3);
496 }
497
498 static void jtag_add_scan_check(void (*jtag_add_scan)(int in_num_fields, const scan_field_t *in_fields, tap_state_t state),
499 int in_num_fields, scan_field_t *in_fields, tap_state_t state)
500 {
501 for (int i = 0; i < in_num_fields; i++)
502 {
503 struct scan_field_s *field = &in_fields[i];
504 field->allocated = 0;
505 field->modified = 0;
506 if (field->check_value || field->in_value)
507 continue;
508 interface_jtag_add_scan_check_alloc(field);
509 field->modified = 1;
510 }
511
512 jtag_add_scan(in_num_fields, in_fields, state);
513
514 for (int i = 0; i < in_num_fields; i++)
515 {
516 if ((in_fields[i].check_value != NULL) && (in_fields[i].in_value != NULL))
517 {
518 /* this is synchronous for a minidriver */
519 jtag_add_callback4(jtag_check_value_mask_callback, in_fields[i].in_value,
520 (jtag_callback_data_t)in_fields[i].check_value,
521 (jtag_callback_data_t)in_fields[i].check_mask,
522 (jtag_callback_data_t)in_fields[i].num_bits);
523 }
524 if (in_fields[i].allocated)
525 {
526 free(in_fields[i].in_value);
527 }
528 if (in_fields[i].modified)
529 {
530 in_fields[i].in_value = NULL;
531 }
532 }
533 }
534
535 void jtag_add_dr_scan_check(int in_num_fields, scan_field_t *in_fields, tap_state_t state)
536 {
537 if (jtag_verify)
538 {
539 jtag_add_scan_check(jtag_add_dr_scan, in_num_fields, in_fields, state);
540 } else
541 {
542 jtag_add_dr_scan(in_num_fields, in_fields, state);
543 }
544 }
545
546
547 /**
548 * Generate a DR SCAN using the fields passed to the function
549 *
550 * For not bypassed TAPs the function checks in_fields and uses fields specified there.
551 * For bypassed TAPs the function generates a dummy 1bit field.
552 *
553 * The bypass status of TAPs is set by jtag_add_ir_scan().
554 *
555 */
556 void jtag_add_dr_scan(int in_num_fields, const scan_field_t *in_fields, tap_state_t state)
557 {
558 int retval;
559
560 jtag_prelude(state);
561
562 retval=interface_jtag_add_dr_scan(in_num_fields, in_fields, state);
563 if (retval!=ERROR_OK)
564 jtag_error=retval;
565 }
566
567
568
569 /**
570 * Duplicate the scan fields passed into the function into a DR SCAN command
571 *
572 * This function assumes that the caller handles extra fields for bypassed TAPs
573 *
574 */
575 void jtag_add_plain_dr_scan(int in_num_fields, const scan_field_t *in_fields, tap_state_t state)
576 {
577 int retval;
578
579 jtag_prelude(state);
580
581 retval=interface_jtag_add_plain_dr_scan(in_num_fields, in_fields, state);
582 if (retval!=ERROR_OK)
583 jtag_error=retval;
584 }
585
586 void jtag_add_dr_out(jtag_tap_t* tap,
587 int num_fields, const int* num_bits, const u32* value,
588 tap_state_t end_state)
589 {
590 assert(end_state != TAP_INVALID);
591
592 cmd_queue_cur_state = end_state;
593
594 interface_jtag_add_dr_out(tap,
595 num_fields, num_bits, value,
596 end_state);
597 }
598
599 void jtag_add_tlr(void)
600 {
601 jtag_prelude(TAP_RESET);
602
603 int retval;
604 retval=interface_jtag_add_tlr();
605 if (retval!=ERROR_OK)
606 jtag_error=retval;
607
608 jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
609 }
610
611 void jtag_add_pathmove(int num_states, const tap_state_t *path)
612 {
613 tap_state_t cur_state = cmd_queue_cur_state;
614 int i;
615 int retval;
616
617 /* the last state has to be a stable state */
618 if (!tap_is_state_stable(path[num_states - 1]))
619 {
620 LOG_ERROR("BUG: TAP path doesn't finish in a stable state");
621 exit(-1);
622 }
623
624 for (i=0; i<num_states; i++)
625 {
626 if (path[i] == TAP_RESET)
627 {
628 LOG_ERROR("BUG: TAP_RESET is not a valid state for pathmove sequences");
629 exit(-1);
630 }
631
632 if ( tap_state_transition(cur_state, true) != path[i]
633 && tap_state_transition(cur_state, false) != path[i])
634 {
635 LOG_ERROR("BUG: %s -> %s isn't a valid TAP transition", tap_state_name(cur_state), tap_state_name(path[i]));
636 exit(-1);
637 }
638 cur_state = path[i];
639 }
640
641 jtag_checks();
642
643 retval = interface_jtag_add_pathmove(num_states, path);
644 cmd_queue_cur_state = path[num_states - 1];
645 if (retval!=ERROR_OK)
646 jtag_error=retval;
647 }
648
649 void jtag_add_runtest(int num_cycles, tap_state_t state)
650 {
651 int retval;
652
653 jtag_prelude(state);
654
655 /* executed by sw or hw fifo */
656 retval=interface_jtag_add_runtest(num_cycles, state);
657 if (retval!=ERROR_OK)
658 jtag_error=retval;
659 }
660
661
662 void jtag_add_clocks( int num_cycles )
663 {
664 int retval;
665
666 if( !tap_is_state_stable(cmd_queue_cur_state) )
667 {
668 LOG_ERROR( "jtag_add_clocks() was called with TAP in non-stable state \"%s\"",
669 tap_state_name(cmd_queue_cur_state) );
670 jtag_error = ERROR_JTAG_NOT_STABLE_STATE;
671 return;
672 }
673
674 if( num_cycles > 0 )
675 {
676 jtag_checks();
677
678 retval = interface_jtag_add_clocks(num_cycles);
679 if (retval != ERROR_OK)
680 jtag_error=retval;
681 }
682 }
683
684 void jtag_add_reset(int req_tlr_or_trst, int req_srst)
685 {
686 int trst_with_tlr = 0;
687 int retval;
688
689 /* FIX!!! there are *many* different cases here. A better
690 * approach is needed for legal combinations of transitions...
691 */
692 if ((jtag_reset_config & RESET_HAS_SRST)&&
693 (jtag_reset_config & RESET_HAS_TRST)&&
694 ((jtag_reset_config & RESET_SRST_PULLS_TRST)==0))
695 {
696 if (((req_tlr_or_trst&&!jtag_trst)||
697 (!req_tlr_or_trst&&jtag_trst))&&
698 ((req_srst&&!jtag_srst)||
699 (!req_srst&&jtag_srst)))
700 {
701 /* FIX!!! srst_pulls_trst allows 1,1 => 0,0 transition.... */
702 //LOG_ERROR("BUG: transition of req_tlr_or_trst and req_srst in the same jtag_add_reset() call is undefined");
703 }
704 }
705
706 /* Make sure that jtag_reset_config allows the requested reset */
707 /* if SRST pulls TRST, we can't fulfill srst == 1 with trst == 0 */
708 if (((jtag_reset_config & RESET_SRST_PULLS_TRST) && (req_srst == 1)) && (!req_tlr_or_trst))
709 {
710 LOG_ERROR("BUG: requested reset would assert trst");
711 jtag_error=ERROR_FAIL;
712 return;
713 }
714
715 /* if TRST pulls SRST, we reset with TAP T-L-R */
716 if (((jtag_reset_config & RESET_TRST_PULLS_SRST) && (req_tlr_or_trst)) && (req_srst == 0))
717 {
718 trst_with_tlr = 1;
719 }
720
721 if (req_srst && !(jtag_reset_config & RESET_HAS_SRST))
722 {
723 LOG_ERROR("BUG: requested SRST assertion, but the current configuration doesn't support this");
724 jtag_error=ERROR_FAIL;
725 return;
726 }
727
728 if (req_tlr_or_trst)
729 {
730 if (!trst_with_tlr && (jtag_reset_config & RESET_HAS_TRST))
731 {
732 jtag_trst = 1;
733 } else
734 {
735 trst_with_tlr = 1;
736 }
737 } else
738 {
739 jtag_trst = 0;
740 }
741
742 jtag_srst = req_srst;
743
744 retval = interface_jtag_add_reset(jtag_trst, jtag_srst);
745 if (retval!=ERROR_OK)
746 {
747 jtag_error=retval;
748 return;
749 }
750 jtag_execute_queue();
751
752 if (jtag_srst)
753 {
754 LOG_DEBUG("SRST line asserted");
755 }
756 else
757 {
758 LOG_DEBUG("SRST line released");
759 if (jtag_nsrst_delay)
760 jtag_add_sleep(jtag_nsrst_delay * 1000);
761 }
762
763 if (trst_with_tlr)
764 {
765 LOG_DEBUG("JTAG reset with RESET instead of TRST");
766 jtag_set_end_state(TAP_RESET);
767 jtag_add_tlr();
768 return;
769 }
770
771 if (jtag_trst)
772 {
773 /* we just asserted nTRST, so we're now in Test-Logic-Reset,
774 * and inform possible listeners about this
775 */
776 LOG_DEBUG("TRST line asserted");
777 tap_set_state(TAP_RESET);
778 jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
779 }
780 else
781 {
782 if (jtag_ntrst_delay)
783 jtag_add_sleep(jtag_ntrst_delay * 1000);
784 }
785 }
786
787 tap_state_t jtag_set_end_state(tap_state_t state)
788 {
789 if ((state == TAP_DRSHIFT)||(state == TAP_IRSHIFT))
790 {
791 LOG_ERROR("BUG: TAP_DRSHIFT/IRSHIFT can't be end state. Calling code should use a larger scan field");
792 }
793
794 if (state!=TAP_INVALID)
795 cmd_queue_end_state = state;
796 return cmd_queue_end_state;
797 }
798
799 tap_state_t jtag_get_end_state(void)
800 {
801 return cmd_queue_end_state;
802 }
803
804 void jtag_add_sleep(u32 us)
805 {
806 keep_alive(); /* we might be running on a very slow JTAG clk */
807 int retval=interface_jtag_add_sleep(us);
808 if (retval!=ERROR_OK)
809 jtag_error=retval;
810 return;
811 }
812
813 int jtag_check_value_inner(u8 *captured, u8 *in_check_value, u8 *in_check_mask, int num_bits)
814 {
815 int retval = ERROR_OK;
816
817 int compare_failed = 0;
818
819 if (in_check_mask)
820 compare_failed = buf_cmp_mask(captured, in_check_value, in_check_mask, num_bits);
821 else
822 compare_failed = buf_cmp(captured, in_check_value, num_bits);
823
824 if (compare_failed){
825 /* An error handler could have caught the failing check
826 * only report a problem when there wasn't a handler, or if the handler
827 * acknowledged the error
828 */
829 /*
830 LOG_WARNING("TAP %s:",
831 jtag_tap_name(field->tap));
832 */
833 if (compare_failed)
834 {
835 char *captured_char = buf_to_str(captured, (num_bits > DEBUG_JTAG_IOZ) ? DEBUG_JTAG_IOZ : num_bits, 16);
836 char *in_check_value_char = buf_to_str(in_check_value, (num_bits > DEBUG_JTAG_IOZ) ? DEBUG_JTAG_IOZ : num_bits, 16);
837
838 if (in_check_mask)
839 {
840 char *in_check_mask_char;
841 in_check_mask_char = buf_to_str(in_check_mask, (num_bits > DEBUG_JTAG_IOZ) ? DEBUG_JTAG_IOZ : num_bits, 16);
842 LOG_WARNING("value captured during scan didn't pass the requested check:");
843 LOG_WARNING("captured: 0x%s check_value: 0x%s check_mask: 0x%s",
844 captured_char, in_check_value_char, in_check_mask_char);
845 free(in_check_mask_char);
846 }
847 else
848 {
849 LOG_WARNING("value captured during scan didn't pass the requested check: captured: 0x%s check_value: 0x%s", captured_char, in_check_value_char);
850 }
851
852 free(captured_char);
853 free(in_check_value_char);
854
855 retval = ERROR_JTAG_QUEUE_FAILED;
856 }
857
858 }
859 return retval;
860 }
861
862 void jtag_check_value_mask(scan_field_t *field, u8 *value, u8 *mask)
863 {
864 assert(field->in_value != NULL);
865
866 if (value==NULL)
867 {
868 /* no checking to do */
869 return;
870 }
871
872 jtag_execute_queue_noclear();
873
874 int retval=jtag_check_value_inner(field->in_value, value, mask, field->num_bits);
875 jtag_set_error(retval);
876 }
877
878
879
880 int default_interface_jtag_execute_queue(void)
881 {
882 if (NULL == jtag)
883 {
884 LOG_ERROR("No JTAG interface configured yet. "
885 "Issue 'init' command in startup scripts "
886 "before communicating with targets.");
887 return ERROR_FAIL;
888 }
889
890 return jtag->execute_queue();
891 }
892
893 void jtag_execute_queue_noclear(void)
894 {
895 /* each flush can take as much as 1-2ms on high bandwidth low latency interfaces.
896 * E.g. a JTAG over TCP/IP or USB....
897 */
898 jtag_flush_queue_count++;
899
900 int retval=interface_jtag_execute_queue();
901 /* we keep the first error */
902 if ((jtag_error==ERROR_OK)&&(retval!=ERROR_OK))
903 {
904 jtag_error=retval;
905 }
906 }
907
908 int jtag_get_flush_queue_count(void)
909 {
910 return jtag_flush_queue_count;
911 }
912
913 int jtag_execute_queue(void)
914 {
915 int retval;
916 jtag_execute_queue_noclear();
917 retval=jtag_error;
918 jtag_error=ERROR_OK;
919 return retval;
920 }
921
922 static int jtag_reset_callback(enum jtag_event event, void *priv)
923 {
924 jtag_tap_t *tap = priv;
925
926 LOG_DEBUG("-");
927
928 if (event == JTAG_TRST_ASSERTED)
929 {
930 buf_set_ones(tap->cur_instr, tap->ir_length);
931 tap->bypass = 1;
932 }
933
934 return ERROR_OK;
935 }
936
937 void jtag_sleep(u32 us)
938 {
939 alive_sleep(us/1000);
940 }
941
942 /// maximum number of JTAG devices expected in the chain
943 #define JTAG_MAX_CHAIN_SIZE 20
944
945 #define EXTRACT_MFG(X) (((X) & 0xffe) >> 1)
946 #define EXTRACT_PART(X) (((X) & 0xffff000) >> 12)
947 #define EXTRACT_VER(X) (((X) & 0xf0000000) >> 28)
948
949 /* Try to examine chain layout according to IEEE 1149.1 §12
950 */
951 static int jtag_examine_chain(void)
952 {
953 jtag_tap_t *tap;
954 scan_field_t field;
955 u8 idcode_buffer[JTAG_MAX_CHAIN_SIZE * 4];
956 int i;
957 int bit_count;
958 int device_count = 0;
959 u8 zero_check = 0x0;
960 u8 one_check = 0xff;
961
962 field.tap = NULL;
963 field.num_bits = sizeof(idcode_buffer) * 8;
964 field.out_value = idcode_buffer;
965
966 field.in_value = idcode_buffer;
967
968
969
970
971 for (i = 0; i < JTAG_MAX_CHAIN_SIZE; i++)
972 {
973 buf_set_u32(idcode_buffer, i * 32, 32, 0x000000FF);
974 }
975
976 jtag_add_plain_dr_scan(1, &field, TAP_RESET);
977 jtag_execute_queue();
978
979 for (i = 0; i < JTAG_MAX_CHAIN_SIZE * 4; i++)
980 {
981 zero_check |= idcode_buffer[i];
982 one_check &= idcode_buffer[i];
983 }
984
985 /* if there wasn't a single non-zero bit or if all bits were one, the scan isn't valid */
986 if ((zero_check == 0x00) || (one_check == 0xff))
987 {
988 LOG_ERROR("JTAG communication failure, check connection, JTAG interface, target power etc.");
989 return ERROR_JTAG_INIT_FAILED;
990 }
991
992 /* point at the 1st tap */
993 tap = jtag_tap_next_enabled(NULL);
994 if( tap == NULL ){
995 LOG_ERROR("JTAG: No taps enabled?");
996 return ERROR_JTAG_INIT_FAILED;
997 }
998
999 for (bit_count = 0; bit_count < (JTAG_MAX_CHAIN_SIZE * 32) - 31;)
1000 {
1001 u32 idcode = buf_get_u32(idcode_buffer, bit_count, 32);
1002 if ((idcode & 1) == 0)
1003 {
1004 /* LSB must not be 0, this indicates a device in bypass */
1005 LOG_WARNING("Tap/Device does not have IDCODE");
1006 idcode=0;
1007
1008 bit_count += 1;
1009 }
1010 else
1011 {
1012 u32 manufacturer;
1013 u32 part;
1014 u32 version;
1015
1016 /* some devices, such as AVR will output all 1's instead of TDI
1017 input value at end of chain. */
1018 if ((idcode == 0x000000FF)||(idcode == 0xFFFFFFFF))
1019 {
1020 int unexpected=0;
1021 /* End of chain (invalid manufacturer ID)
1022 *
1023 * The JTAG examine is the very first thing that happens
1024 *
1025 * A single JTAG device requires only 64 bits to be read back correctly.
1026 *
1027 * The code below adds a check that the rest of the data scanned (640 bits)
1028 * are all as expected. This helps diagnose/catch problems with the JTAG chain
1029 *
1030 * earlier and gives more helpful/explicit error messages.
1031 */
1032 for (bit_count += 32; bit_count < (JTAG_MAX_CHAIN_SIZE * 32) - 31;bit_count += 32)
1033 {
1034 idcode = buf_get_u32(idcode_buffer, bit_count, 32);
1035 if (unexpected||((idcode != 0x000000FF)&&(idcode != 0xFFFFFFFF)))
1036 {
1037 LOG_WARNING("Unexpected idcode after end of chain! %d 0x%08x", bit_count, idcode);
1038 unexpected = 1;
1039 }
1040 }
1041
1042 break;
1043 }
1044
1045 manufacturer = EXTRACT_MFG(idcode);
1046 part = EXTRACT_PART(idcode);
1047 version = EXTRACT_VER(idcode);
1048
1049 LOG_INFO("JTAG tap: %s tap/device found: 0x%8.8x (Manufacturer: 0x%3.3x, Part: 0x%4.4x, Version: 0x%1.1x)",
1050 ((tap != NULL) ? (tap->dotted_name) : "(not-named)"),
1051 idcode, manufacturer, part, version);
1052
1053 bit_count += 32;
1054 }
1055 device_count++;
1056 if (!tap)
1057 continue;
1058
1059 tap->idcode = idcode;
1060
1061 if (tap->expected_ids_cnt > 0) {
1062 /* Loop over the expected identification codes and test for a match */
1063 u8 ii;
1064 for (ii = 0; ii < tap->expected_ids_cnt; ii++) {
1065 if( tap->idcode == tap->expected_ids[ii] ){
1066 break;
1067 }
1068 }
1069
1070 /* If none of the expected ids matched, log an error */
1071 if (ii == tap->expected_ids_cnt) {
1072 LOG_ERROR("JTAG tap: %s got: 0x%08x (mfg: 0x%3.3x, part: 0x%4.4x, ver: 0x%1.1x)",
1073 tap->dotted_name,
1074 idcode,
1075 EXTRACT_MFG( tap->idcode ),
1076 EXTRACT_PART( tap->idcode ),
1077 EXTRACT_VER( tap->idcode ) );
1078 for (ii = 0; ii < tap->expected_ids_cnt; ii++) {
1079 LOG_ERROR("JTAG tap: %s expected %hhu of %hhu: 0x%08x (mfg: 0x%3.3x, part: 0x%4.4x, ver: 0x%1.1x)",
1080 tap->dotted_name,
1081 ii + 1,
1082 tap->expected_ids_cnt,
1083 tap->expected_ids[ii],
1084 EXTRACT_MFG( tap->expected_ids[ii] ),
1085 EXTRACT_PART( tap->expected_ids[ii] ),
1086 EXTRACT_VER( tap->expected_ids[ii] ) );
1087 }
1088
1089 return ERROR_JTAG_INIT_FAILED;
1090 } else {
1091 LOG_INFO("JTAG Tap/device matched");
1092 }
1093 } else {
1094 #if 0
1095 LOG_INFO("JTAG TAP ID: 0x%08x - Unknown - please report (A) chipname and (B) idcode to the openocd project",
1096 tap->idcode);
1097 #endif
1098 }
1099 tap = jtag_tap_next_enabled(tap);
1100 }
1101
1102 /* see if number of discovered devices matches configuration */
1103 if (device_count != jtag_tap_count_enabled())
1104 {
1105 LOG_ERROR("number of discovered devices in JTAG chain (%i) doesn't match (enabled) configuration (%i), total taps: %d",
1106 device_count, jtag_tap_count_enabled(), jtag_tap_count());
1107 LOG_ERROR("check the config file and ensure proper JTAG communication (connections, speed, ...)");
1108 return ERROR_JTAG_INIT_FAILED;
1109 }
1110
1111 return ERROR_OK;
1112 }
1113
1114 static int jtag_validate_chain(void)
1115 {
1116 jtag_tap_t *tap;
1117 int total_ir_length = 0;
1118 u8 *ir_test = NULL;
1119 scan_field_t field;
1120 int chain_pos = 0;
1121
1122 tap = NULL;
1123 total_ir_length = 0;
1124 for(;;){
1125 tap = jtag_tap_next_enabled(tap);
1126 if( tap == NULL ){
1127 break;
1128 }
1129 total_ir_length += tap->ir_length;
1130 }
1131
1132 total_ir_length += 2;
1133 ir_test = malloc(CEIL(total_ir_length, 8));
1134 buf_set_ones(ir_test, total_ir_length);
1135
1136 field.tap = NULL;
1137 field.num_bits = total_ir_length;
1138 field.out_value = ir_test;
1139 field.in_value = ir_test;
1140
1141
1142 jtag_add_plain_ir_scan(1, &field, TAP_RESET);
1143 jtag_execute_queue();
1144
1145 tap = NULL;
1146 chain_pos = 0;
1147 int val;
1148 for(;;){
1149 tap = jtag_tap_next_enabled(tap);
1150 if( tap == NULL ){
1151 break;
1152 }
1153
1154 val = buf_get_u32(ir_test, chain_pos, 2);
1155 if (val != 0x1)
1156 {
1157 char *cbuf = buf_to_str(ir_test, total_ir_length, 16);
1158 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);
1159 free(cbuf);
1160 free(ir_test);
1161 return ERROR_JTAG_INIT_FAILED;
1162 }
1163 chain_pos += tap->ir_length;
1164 }
1165
1166 val = buf_get_u32(ir_test, chain_pos, 2);
1167 if (val != 0x3)
1168 {
1169 char *cbuf = buf_to_str(ir_test, total_ir_length, 16);
1170 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);
1171 free(cbuf);
1172 free(ir_test);
1173 return ERROR_JTAG_INIT_FAILED;
1174 }
1175
1176 free(ir_test);
1177
1178 return ERROR_OK;
1179 }
1180
1181 enum jtag_tap_cfg_param {
1182 JCFG_EVENT
1183 };
1184
1185 static Jim_Nvp nvp_config_opts[] = {
1186 { .name = "-event", .value = JCFG_EVENT },
1187
1188 { .name = NULL, .value = -1 }
1189 };
1190
1191 static int jtag_tap_configure_cmd( Jim_GetOptInfo *goi, jtag_tap_t * tap)
1192 {
1193 Jim_Nvp *n;
1194 Jim_Obj *o;
1195 int e;
1196
1197 /* parse config or cget options */
1198 while (goi->argc > 0) {
1199 Jim_SetEmptyResult (goi->interp);
1200
1201 e = Jim_GetOpt_Nvp(goi, nvp_config_opts, &n);
1202 if (e != JIM_OK) {
1203 Jim_GetOpt_NvpUnknown(goi, nvp_config_opts, 0);
1204 return e;
1205 }
1206
1207 switch (n->value) {
1208 case JCFG_EVENT:
1209 if (goi->argc == 0) {
1210 Jim_WrongNumArgs( goi->interp, goi->argc, goi->argv, "-event ?event-name? ..." );
1211 return JIM_ERR;
1212 }
1213
1214 e = Jim_GetOpt_Nvp( goi, nvp_jtag_tap_event, &n );
1215 if (e != JIM_OK) {
1216 Jim_GetOpt_NvpUnknown(goi, nvp_jtag_tap_event, 1);
1217 return e;
1218 }
1219
1220 if (goi->isconfigure) {
1221 if (goi->argc != 1) {
1222 Jim_WrongNumArgs(goi->interp, goi->argc, goi->argv, "-event ?event-name? ?EVENT-BODY?");
1223 return JIM_ERR;
1224 }
1225 } else {
1226 if (goi->argc != 0) {
1227 Jim_WrongNumArgs(goi->interp, goi->argc, goi->argv, "-event ?event-name?");
1228 return JIM_ERR;
1229 }
1230 }
1231
1232 {
1233 jtag_tap_event_action_t *jteap;
1234
1235 jteap = tap->event_action;
1236 /* replace existing? */
1237 while (jteap) {
1238 if (jteap->event == (enum jtag_tap_event)n->value) {
1239 break;
1240 }
1241 jteap = jteap->next;
1242 }
1243
1244 if (goi->isconfigure) {
1245 if (jteap == NULL) {
1246 /* create new */
1247 jteap = calloc(1, sizeof (*jteap));
1248 }
1249 jteap->event = n->value;
1250 Jim_GetOpt_Obj( goi, &o);
1251 if (jteap->body) {
1252 Jim_DecrRefCount(interp, jteap->body);
1253 }
1254 jteap->body = Jim_DuplicateObj(goi->interp, o);
1255 Jim_IncrRefCount(jteap->body);
1256
1257 /* add to head of event list */
1258 jteap->next = tap->event_action;
1259 tap->event_action = jteap;
1260 Jim_SetEmptyResult(goi->interp);
1261 } else {
1262 /* get */
1263 if (jteap == NULL) {
1264 Jim_SetEmptyResult(goi->interp);
1265 } else {
1266 Jim_SetResult(goi->interp, Jim_DuplicateObj(goi->interp, jteap->body));
1267 }
1268 }
1269 }
1270 /* loop for more */
1271 break;
1272 }
1273 } /* while (goi->argc) */
1274
1275 return JIM_OK;
1276 }
1277
1278
1279 static void jtag_tap_init(jtag_tap_t *tap)
1280 {
1281 assert(0 != tap->ir_length);
1282
1283 tap->expected = malloc(tap->ir_length);
1284 tap->expected_mask = malloc(tap->ir_length);
1285 tap->cur_instr = malloc(tap->ir_length);
1286
1287 buf_set_u32(tap->expected, 0, tap->ir_length, tap->ir_capture_value);
1288 buf_set_u32(tap->expected_mask, 0, tap->ir_length, tap->ir_capture_mask);
1289 buf_set_ones(tap->cur_instr, tap->ir_length);
1290
1291 // place TAP in bypass mode
1292 tap->bypass = 1;
1293 // register the reset callback for the TAP
1294 jtag_register_event_callback(&jtag_reset_callback, tap);
1295
1296 LOG_DEBUG("Created Tap: %s @ abs position %d, "
1297 "irlen %d, capture: 0x%x mask: 0x%x", tap->dotted_name,
1298 tap->abs_chain_position, tap->ir_length,
1299 tap->ir_capture_value, tap->ir_capture_mask);
1300 jtag_tap_add(tap);
1301 }
1302
1303 static void jtag_tap_free(jtag_tap_t *tap)
1304 {
1305 /// @todo is anything missing? no memory leaks please
1306 free((void *)tap->expected_ids);
1307 free((void *)tap->chip);
1308 free((void *)tap->tapname);
1309 free((void *)tap->dotted_name);
1310 free(tap);
1311 }
1312
1313 static int jim_newtap_cmd( Jim_GetOptInfo *goi )
1314 {
1315 jtag_tap_t *pTap;
1316 jim_wide w;
1317 int x;
1318 int e;
1319 int reqbits;
1320 Jim_Nvp *n;
1321 char *cp;
1322 const Jim_Nvp opts[] = {
1323 #define NTAP_OPT_IRLEN 0
1324 { .name = "-irlen" , .value = NTAP_OPT_IRLEN },
1325 #define NTAP_OPT_IRMASK 1
1326 { .name = "-irmask" , .value = NTAP_OPT_IRMASK },
1327 #define NTAP_OPT_IRCAPTURE 2
1328 { .name = "-ircapture" , .value = NTAP_OPT_IRCAPTURE },
1329 #define NTAP_OPT_ENABLED 3
1330 { .name = "-enable" , .value = NTAP_OPT_ENABLED },
1331 #define NTAP_OPT_DISABLED 4
1332 { .name = "-disable" , .value = NTAP_OPT_DISABLED },
1333 #define NTAP_OPT_EXPECTED_ID 5
1334 { .name = "-expected-id" , .value = NTAP_OPT_EXPECTED_ID },
1335 { .name = NULL , .value = -1 },
1336 };
1337
1338 pTap = malloc( sizeof(jtag_tap_t) );
1339 memset( pTap, 0, sizeof(*pTap) );
1340 if( !pTap ){
1341 Jim_SetResult_sprintf( goi->interp, "no memory");
1342 return JIM_ERR;
1343 }
1344 /*
1345 * we expect CHIP + TAP + OPTIONS
1346 * */
1347 if( goi->argc < 3 ){
1348 Jim_SetResult_sprintf(goi->interp, "Missing CHIP TAP OPTIONS ....");
1349 return JIM_ERR;
1350 }
1351 Jim_GetOpt_String( goi, &cp, NULL );
1352 pTap->chip = strdup(cp);
1353
1354 Jim_GetOpt_String( goi, &cp, NULL );
1355 pTap->tapname = strdup(cp);
1356
1357 /* name + dot + name + null */
1358 x = strlen(pTap->chip) + 1 + strlen(pTap->tapname) + 1;
1359 cp = malloc( x );
1360 sprintf( cp, "%s.%s", pTap->chip, pTap->tapname );
1361 pTap->dotted_name = cp;
1362
1363 LOG_DEBUG("Creating New Tap, Chip: %s, Tap: %s, Dotted: %s, %d params",
1364 pTap->chip, pTap->tapname, pTap->dotted_name, goi->argc);
1365
1366 /* default is enabled */
1367 pTap->enabled = 1;
1368
1369 /* deal with options */
1370 #define NTREQ_IRLEN 1
1371 #define NTREQ_IRCAPTURE 2
1372 #define NTREQ_IRMASK 4
1373
1374 /* clear them as we find them */
1375 reqbits = (NTREQ_IRLEN | NTREQ_IRCAPTURE | NTREQ_IRMASK);
1376
1377 while( goi->argc ){
1378 e = Jim_GetOpt_Nvp( goi, opts, &n );
1379 if( e != JIM_OK ){
1380 Jim_GetOpt_NvpUnknown( goi, opts, 0 );
1381 return e;
1382 }
1383 LOG_DEBUG("Processing option: %s", n->name );
1384 switch( n->value ){
1385 case NTAP_OPT_ENABLED:
1386 pTap->enabled = 1;
1387 break;
1388 case NTAP_OPT_DISABLED:
1389 pTap->enabled = 0;
1390 break;
1391 case NTAP_OPT_EXPECTED_ID:
1392 {
1393 u32 *new_expected_ids;
1394
1395 e = Jim_GetOpt_Wide( goi, &w );
1396 if( e != JIM_OK) {
1397 Jim_SetResult_sprintf(goi->interp, "option: %s bad parameter", n->name);
1398 return e;
1399 }
1400
1401 new_expected_ids = malloc(sizeof(u32) * (pTap->expected_ids_cnt + 1));
1402 if (new_expected_ids == NULL) {
1403 Jim_SetResult_sprintf( goi->interp, "no memory");
1404 return JIM_ERR;
1405 }
1406
1407 memcpy(new_expected_ids, pTap->expected_ids, sizeof(u32) * pTap->expected_ids_cnt);
1408
1409 new_expected_ids[pTap->expected_ids_cnt] = w;
1410
1411 free(pTap->expected_ids);
1412 pTap->expected_ids = new_expected_ids;
1413 pTap->expected_ids_cnt++;
1414 break;
1415 }
1416 case NTAP_OPT_IRLEN:
1417 case NTAP_OPT_IRMASK:
1418 case NTAP_OPT_IRCAPTURE:
1419 e = Jim_GetOpt_Wide( goi, &w );
1420 if( e != JIM_OK ){
1421 Jim_SetResult_sprintf( goi->interp, "option: %s bad parameter", n->name );
1422 return e;
1423 }
1424 if( (w < 0) || (w > 0xffff) ){
1425 /* wacky value */
1426 Jim_SetResult_sprintf( goi->interp, "option: %s - wacky value: %d (0x%x)",
1427 n->name, (int)(w), (int)(w));
1428 return JIM_ERR;
1429 }
1430 switch(n->value){
1431 case NTAP_OPT_IRLEN:
1432 pTap->ir_length = w;
1433 reqbits &= (~(NTREQ_IRLEN));
1434 break;
1435 case NTAP_OPT_IRMASK:
1436 pTap->ir_capture_mask = w;
1437 reqbits &= (~(NTREQ_IRMASK));
1438 break;
1439 case NTAP_OPT_IRCAPTURE:
1440 pTap->ir_capture_value = w;
1441 reqbits &= (~(NTREQ_IRCAPTURE));
1442 break;
1443 }
1444 } /* switch(n->value) */
1445 } /* while( goi->argc ) */
1446
1447 /* Did all the required option bits get cleared? */
1448 if (0 == reqbits)
1449 {
1450 jtag_tap_init(pTap);
1451 return ERROR_OK;
1452 }
1453
1454 Jim_SetResult_sprintf(goi->interp,
1455 "newtap: %s missing required parameters",
1456 pTap->dotted_name);
1457 jtag_tap_free(pTap);
1458 return JIM_ERR;
1459 }
1460
1461 static int jim_jtag_command( Jim_Interp *interp, int argc, Jim_Obj *const *argv )
1462 {
1463 Jim_GetOptInfo goi;
1464 int e;
1465 Jim_Nvp *n;
1466 Jim_Obj *o;
1467 struct command_context_s *context;
1468
1469 enum {
1470 JTAG_CMD_INTERFACE,
1471 JTAG_CMD_INIT_RESET,
1472 JTAG_CMD_NEWTAP,
1473 JTAG_CMD_TAPENABLE,
1474 JTAG_CMD_TAPDISABLE,
1475 JTAG_CMD_TAPISENABLED,
1476 JTAG_CMD_CONFIGURE,
1477 JTAG_CMD_CGET
1478 };
1479
1480 const Jim_Nvp jtag_cmds[] = {
1481 { .name = "interface" , .value = JTAG_CMD_INTERFACE },
1482 { .name = "arp_init-reset", .value = JTAG_CMD_INIT_RESET },
1483 { .name = "newtap" , .value = JTAG_CMD_NEWTAP },
1484 { .name = "tapisenabled" , .value = JTAG_CMD_TAPISENABLED },
1485 { .name = "tapenable" , .value = JTAG_CMD_TAPENABLE },
1486 { .name = "tapdisable" , .value = JTAG_CMD_TAPDISABLE },
1487 { .name = "configure" , .value = JTAG_CMD_CONFIGURE },
1488 { .name = "cget" , .value = JTAG_CMD_CGET },
1489
1490 { .name = NULL, .value = -1 },
1491 };
1492
1493 context = Jim_GetAssocData(interp, "context");
1494 /* go past the command */
1495 Jim_GetOpt_Setup( &goi, interp, argc-1, argv+1 );
1496
1497 e = Jim_GetOpt_Nvp( &goi, jtag_cmds, &n );
1498 if( e != JIM_OK ){
1499 Jim_GetOpt_NvpUnknown( &goi, jtag_cmds, 0 );
1500 return e;
1501 }
1502 Jim_SetEmptyResult( goi.interp );
1503 switch( n->value ){
1504 case JTAG_CMD_INTERFACE:
1505 /* return the name of the interface */
1506 /* TCL code might need to know the exact type... */
1507 /* FUTURE: we allow this as a means to "set" the interface. */
1508 if( goi.argc != 0 ){
1509 Jim_WrongNumArgs( goi.interp, 1, goi.argv-1, "(no params)");
1510 return JIM_ERR;
1511 }
1512 Jim_SetResultString( goi.interp, jtag_interface->name, -1 );
1513 return JIM_OK;
1514 case JTAG_CMD_INIT_RESET:
1515 if( goi.argc != 0 ){
1516 Jim_WrongNumArgs( goi.interp, 1, goi.argv-1, "(no params)");
1517 return JIM_ERR;
1518 }
1519 e = jtag_init_reset(context);
1520 if( e != ERROR_OK ){
1521 Jim_SetResult_sprintf( goi.interp, "error: %d", e);
1522 return JIM_ERR;
1523 }
1524 return JIM_OK;
1525 case JTAG_CMD_NEWTAP:
1526 return jim_newtap_cmd( &goi );
1527 break;
1528 case JTAG_CMD_TAPISENABLED:
1529 case JTAG_CMD_TAPENABLE:
1530 case JTAG_CMD_TAPDISABLE:
1531 if( goi.argc != 1 ){
1532 Jim_SetResultString( goi.interp, "Too many parameters",-1 );
1533 return JIM_ERR;
1534 }
1535
1536 {
1537 jtag_tap_t *t;
1538 t = jtag_tap_by_jim_obj( goi.interp, goi.argv[0] );
1539 if( t == NULL ){
1540 return JIM_ERR;
1541 }
1542 switch( n->value ){
1543 case JTAG_CMD_TAPISENABLED:
1544 e = t->enabled;
1545 break;
1546 case JTAG_CMD_TAPENABLE:
1547 jtag_tap_handle_event( t, JTAG_TAP_EVENT_ENABLE);
1548 e = 1;
1549 t->enabled = e;
1550 break;
1551 case JTAG_CMD_TAPDISABLE:
1552 jtag_tap_handle_event( t, JTAG_TAP_EVENT_DISABLE);
1553 e = 0;
1554 t->enabled = e;
1555 break;
1556 }
1557 Jim_SetResult( goi.interp, Jim_NewIntObj( goi.interp, e ) );
1558 return JIM_OK;
1559 }
1560 break;
1561
1562 case JTAG_CMD_CGET:
1563 if( goi.argc < 2 ){
1564 Jim_WrongNumArgs( goi.interp, 0, NULL, "?tap-name? -option ...");
1565 return JIM_ERR;
1566 }
1567
1568 {
1569 jtag_tap_t *t;
1570
1571 Jim_GetOpt_Obj(&goi, &o);
1572 t = jtag_tap_by_jim_obj( goi.interp, o );
1573 if( t == NULL ){
1574 return JIM_ERR;
1575 }
1576
1577 goi.isconfigure = 0;
1578 return jtag_tap_configure_cmd( &goi, t);
1579 }
1580 break;
1581
1582 case JTAG_CMD_CONFIGURE:
1583 if( goi.argc < 3 ){
1584 Jim_WrongNumArgs( goi.interp, 0, NULL, "?tap-name? -option ?VALUE? ...");
1585 return JIM_ERR;
1586 }
1587
1588 {
1589 jtag_tap_t *t;
1590
1591 Jim_GetOpt_Obj(&goi, &o);
1592 t = jtag_tap_by_jim_obj( goi.interp, o );
1593 if( t == NULL ){
1594 return JIM_ERR;
1595 }
1596
1597 goi.isconfigure = 1;
1598 return jtag_tap_configure_cmd( &goi, t);
1599 }
1600 }
1601
1602 return JIM_ERR;
1603 }
1604
1605 int jtag_register_commands(struct command_context_s *cmd_ctx)
1606 {
1607 register_jim( cmd_ctx, "jtag", jim_jtag_command, "perform jtag tap actions");
1608
1609 register_command(cmd_ctx, NULL, "interface", handle_interface_command,
1610 COMMAND_CONFIG, "try to configure interface");
1611 register_command(cmd_ctx, NULL, "jtag_speed", handle_jtag_speed_command,
1612 COMMAND_ANY, "(DEPRECATED) set jtag speed (if supported)");
1613 register_command(cmd_ctx, NULL, "jtag_khz", handle_jtag_khz_command,
1614 COMMAND_ANY, "set maximum jtag speed (if supported); "
1615 "parameter is maximum khz, or 0 for adaptive clocking (RTCK).");
1616 register_command(cmd_ctx, NULL, "jtag_device", handle_jtag_device_command,
1617 COMMAND_CONFIG, "(DEPRECATED) jtag_device <ir_length> <ir_expected> <ir_mask>");
1618 register_command(cmd_ctx, NULL, "reset_config", handle_reset_config_command,
1619 COMMAND_ANY,
1620 "[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]");
1621 register_command(cmd_ctx, NULL, "jtag_nsrst_delay", handle_jtag_nsrst_delay_command,
1622 COMMAND_ANY, "jtag_nsrst_delay <ms> - delay after deasserting srst in ms");
1623 register_command(cmd_ctx, NULL, "jtag_ntrst_delay", handle_jtag_ntrst_delay_command,
1624 COMMAND_ANY, "jtag_ntrst_delay <ms> - delay after deasserting trst in ms");
1625
1626 register_command(cmd_ctx, NULL, "scan_chain", handle_scan_chain_command,
1627 COMMAND_EXEC, "print current scan chain configuration");
1628
1629 register_command(cmd_ctx, NULL, "endstate", handle_endstate_command,
1630 COMMAND_EXEC, "finish JTAG operations in <tap_state>");
1631 register_command(cmd_ctx, NULL, "jtag_reset", handle_jtag_reset_command,
1632 COMMAND_EXEC, "toggle reset lines <trst> <srst>");
1633 register_command(cmd_ctx, NULL, "runtest", handle_runtest_command,
1634 COMMAND_EXEC, "move to Run-Test/Idle, and execute <num_cycles>");
1635 register_command(cmd_ctx, NULL, "irscan", handle_irscan_command,
1636 COMMAND_EXEC, "execute IR scan <device> <instr> [dev2] [instr2] ...");
1637 register_jim(cmd_ctx, "drscan", Jim_Command_drscan, "execute DR scan <device> <num_bits> <value> <num_bits1> <value2> ...");
1638 register_jim(cmd_ctx, "flush_count", Jim_Command_flush_count, "returns number of times the JTAG queue has been flushed");
1639
1640 register_command(cmd_ctx, NULL, "verify_ircapture", handle_verify_ircapture_command,
1641 COMMAND_ANY, "verify value captured during Capture-IR <enable|disable>");
1642 register_command(cmd_ctx, NULL, "verify_jtag", handle_verify_jtag_command,
1643 COMMAND_ANY, "verify value capture <enable|disable>");
1644 register_command(cmd_ctx, NULL, "tms_sequence", handle_tms_sequence_command,
1645 COMMAND_ANY, "choose short(default) or long tms_sequence <short|long>");
1646 return ERROR_OK;
1647 }
1648
1649 int jtag_interface_init(struct command_context_s *cmd_ctx)
1650 {
1651 if (jtag)
1652 return ERROR_OK;
1653
1654 if (!jtag_interface)
1655 {
1656 /* nothing was previously specified by "interface" command */
1657 LOG_ERROR("JTAG interface has to be specified, see \"interface\" command");
1658 return ERROR_JTAG_INVALID_INTERFACE;
1659 }
1660 if(hasKHz)
1661 {
1662 jtag_interface->khz(jtag_get_speed_khz(), &jtag_speed);
1663 hasKHz = false;
1664 }
1665
1666 if (jtag_interface->init() != ERROR_OK)
1667 return ERROR_JTAG_INIT_FAILED;
1668
1669 jtag = jtag_interface;
1670 return ERROR_OK;
1671 }
1672
1673 static int jtag_init_inner(struct command_context_s *cmd_ctx)
1674 {
1675 jtag_tap_t *tap;
1676 int retval;
1677
1678 LOG_DEBUG("Init JTAG chain");
1679
1680 tap = jtag_tap_next_enabled(NULL);
1681 if( tap == NULL ){
1682 LOG_ERROR("There are no enabled taps?");
1683 return ERROR_JTAG_INIT_FAILED;
1684 }
1685
1686 jtag_add_tlr();
1687 if ((retval=jtag_execute_queue())!=ERROR_OK)
1688 return retval;
1689
1690 /* examine chain first, as this could discover the real chain layout */
1691 if (jtag_examine_chain() != ERROR_OK)
1692 {
1693 LOG_ERROR("trying to validate configured JTAG chain anyway...");
1694 }
1695
1696 if (jtag_validate_chain() != ERROR_OK)
1697 {
1698 LOG_WARNING("Could not validate JTAG chain, continuing anyway...");
1699 }
1700
1701 return ERROR_OK;
1702 }
1703
1704 int jtag_interface_quit(void)
1705 {
1706 if (!jtag || !jtag->quit)
1707 return ERROR_OK;
1708
1709 // close the JTAG interface
1710 int result = jtag->quit();
1711 if (ERROR_OK != result)
1712 LOG_ERROR("failed: %d", result);
1713
1714 return ERROR_OK;
1715 }
1716
1717
1718 int jtag_init_reset(struct command_context_s *cmd_ctx)
1719 {
1720 int retval;
1721
1722 if ((retval=jtag_interface_init(cmd_ctx)) != ERROR_OK)
1723 return retval;
1724
1725 LOG_DEBUG("Trying to bring the JTAG controller to life by asserting TRST / RESET");
1726
1727 /* Reset can happen after a power cycle.
1728 *
1729 * Ideally we would only assert TRST or run RESET before the target reset.
1730 *
1731 * However w/srst_pulls_trst, trst is asserted together with the target
1732 * reset whether we want it or not.
1733 *
1734 * NB! Some targets have JTAG circuitry disabled until a
1735 * trst & srst has been asserted.
1736 *
1737 * NB! here we assume nsrst/ntrst delay are sufficient!
1738 *
1739 * NB! order matters!!!! srst *can* disconnect JTAG circuitry
1740 *
1741 */
1742 jtag_add_reset(1, 0); /* RESET or TRST */
1743 if (jtag_reset_config & RESET_HAS_SRST)
1744 {
1745 jtag_add_reset(1, 1);
1746 if ((jtag_reset_config & RESET_SRST_PULLS_TRST)==0)
1747 jtag_add_reset(0, 1);
1748 }
1749 jtag_add_reset(0, 0);
1750 if ((retval = jtag_execute_queue()) != ERROR_OK)
1751 return retval;
1752
1753 /* Check that we can communication on the JTAG chain + eventually we want to
1754 * be able to perform enumeration only after OpenOCD has started
1755 * telnet and GDB server
1756 *
1757 * That would allow users to more easily perform any magic they need to before
1758 * reset happens.
1759 */
1760 return jtag_init_inner(cmd_ctx);
1761 }
1762
1763 int jtag_init(struct command_context_s *cmd_ctx)
1764 {
1765 int retval;
1766 if ((retval=jtag_interface_init(cmd_ctx)) != ERROR_OK)
1767 return retval;
1768 if (jtag_init_inner(cmd_ctx)==ERROR_OK)
1769 {
1770 return ERROR_OK;
1771 }
1772 return jtag_init_reset(cmd_ctx);
1773 }
1774
1775 void jtag_set_speed_khz(unsigned khz)
1776 {
1777 speed_khz = khz;
1778 }
1779 unsigned jtag_get_speed_khz(void)
1780 {
1781 return speed_khz;
1782 }
1783
1784 static int default_khz(int khz, int *jtag_speed)
1785 {
1786 LOG_ERROR("Translation from khz to jtag_speed not implemented");
1787 return ERROR_FAIL;
1788 }
1789
1790 static int default_speed_div(int speed, int *khz)
1791 {
1792 LOG_ERROR("Translation from jtag_speed to khz not implemented");
1793 return ERROR_FAIL;
1794 }
1795
1796 static int default_power_dropout(int *dropout)
1797 {
1798 *dropout=0; /* by default we can't detect power dropout */
1799 return ERROR_OK;
1800 }
1801
1802 static int default_srst_asserted(int *srst_asserted)
1803 {
1804 *srst_asserted=0; /* by default we can't detect srst asserted */
1805 return ERROR_OK;
1806 }
1807
1808 static int handle_interface_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1809 {
1810 int i;
1811 int retval;
1812
1813 /* check whether the interface is already configured */
1814 if (jtag_interface)
1815 {
1816 LOG_WARNING("Interface already configured, ignoring");
1817 return ERROR_OK;
1818 }
1819
1820 /* interface name is a mandatory argument */
1821 if (argc < 1 || args[0][0] == '\0')
1822 {
1823 return ERROR_COMMAND_SYNTAX_ERROR;
1824 }
1825
1826 for (i=0; jtag_interfaces[i]; i++)
1827 {
1828 if (strcmp(args[0], jtag_interfaces[i]->name) == 0)
1829 {
1830 if ((retval = jtag_interfaces[i]->register_commands(cmd_ctx)) != ERROR_OK)
1831 {
1832 return retval;
1833 }
1834
1835 jtag_interface = jtag_interfaces[i];
1836
1837 if (jtag_interface->khz == NULL)
1838 {
1839 jtag_interface->khz = default_khz;
1840 }
1841 if (jtag_interface->speed_div == NULL)
1842 {
1843 jtag_interface->speed_div = default_speed_div;
1844 }
1845 if (jtag_interface->power_dropout == NULL)
1846 {
1847 jtag_interface->power_dropout = default_power_dropout;
1848 }
1849 if (jtag_interface->srst_asserted == NULL)
1850 {
1851 jtag_interface->srst_asserted = default_srst_asserted;
1852 }
1853
1854 return ERROR_OK;
1855 }
1856 }
1857
1858 /* no valid interface was found (i.e. the configuration option,
1859 * didn't match one of the compiled-in interfaces
1860 */
1861 LOG_ERROR("No valid jtag interface found (%s)", args[0]);
1862 LOG_ERROR("compiled-in jtag interfaces:");
1863 for (i = 0; jtag_interfaces[i]; i++)
1864 {
1865 LOG_ERROR("%i: %s", i, jtag_interfaces[i]->name);
1866 }
1867
1868 return ERROR_JTAG_INVALID_INTERFACE;
1869 }
1870
1871 static int handle_jtag_device_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1872 {
1873 int e;
1874 char buf[1024];
1875 Jim_Obj *newargs[ 10 ];
1876 /*
1877 * CONVERT SYNTAX
1878 * argv[-1] = command
1879 * argv[ 0] = ir length
1880 * argv[ 1] = ir capture
1881 * argv[ 2] = ir mask
1882 * argv[ 3] = not actually used by anything but in the docs
1883 */
1884
1885 if( argc < 4 ){
1886 command_print( cmd_ctx, "OLD DEPRECATED SYNTAX: Please use the NEW syntax");
1887 return ERROR_OK;
1888 }
1889 command_print( cmd_ctx, "OLD SYNTAX: DEPRECATED - translating to new syntax");
1890 command_print( cmd_ctx, "jtag newtap CHIP TAP -irlen %s -ircapture %s -irvalue %s",
1891 args[0],
1892 args[1],
1893 args[2] );
1894 command_print( cmd_ctx, "Example: STM32 has 2 taps, the cortexM3(len4) + boundaryscan(len5)");
1895 command_print( cmd_ctx, "jtag newtap stm32 cortexm3 ....., thus creating the tap: \"stm32.cortexm3\"");
1896 command_print( cmd_ctx, "jtag newtap stm32 boundary ....., and the tap: \"stm32.boundary\"");
1897 command_print( cmd_ctx, "And then refer to the taps by the dotted name.");
1898
1899 newargs[0] = Jim_NewStringObj( interp, "jtag", -1 );
1900 newargs[1] = Jim_NewStringObj( interp, "newtap", -1 );
1901 sprintf( buf, "chip%d", jtag_tap_count() );
1902 newargs[2] = Jim_NewStringObj( interp, buf, -1 );
1903 sprintf( buf, "tap%d", jtag_tap_count() );
1904 newargs[3] = Jim_NewStringObj( interp, buf, -1 );
1905 newargs[4] = Jim_NewStringObj( interp, "-irlen", -1 );
1906 newargs[5] = Jim_NewStringObj( interp, args[0], -1 );
1907 newargs[6] = Jim_NewStringObj( interp, "-ircapture", -1 );
1908 newargs[7] = Jim_NewStringObj( interp, args[1], -1 );
1909 newargs[8] = Jim_NewStringObj( interp, "-irmask", -1 );
1910 newargs[9] = Jim_NewStringObj( interp, args[2], -1 );
1911
1912 command_print( cmd_ctx, "NEW COMMAND:");
1913 sprintf( buf, "%s %s %s %s %s %s %s %s %s %s",
1914 Jim_GetString( newargs[0], NULL ),
1915 Jim_GetString( newargs[1], NULL ),
1916 Jim_GetString( newargs[2], NULL ),
1917 Jim_GetString( newargs[3], NULL ),
1918 Jim_GetString( newargs[4], NULL ),
1919 Jim_GetString( newargs[5], NULL ),
1920 Jim_GetString( newargs[6], NULL ),
1921 Jim_GetString( newargs[7], NULL ),
1922 Jim_GetString( newargs[8], NULL ),
1923 Jim_GetString( newargs[9], NULL ) );
1924
1925 e = jim_jtag_command( interp, 10, newargs );
1926 if( e != JIM_OK ){
1927 command_print( cmd_ctx, "%s", Jim_GetString( Jim_GetResult(interp), NULL ) );
1928 }
1929 return e;
1930 }
1931
1932 static int handle_scan_chain_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1933 {
1934 jtag_tap_t *tap;
1935
1936 tap = jtag_all_taps();
1937 command_print(cmd_ctx, " TapName | Enabled | IdCode Expected IrLen IrCap IrMask Instr ");
1938 command_print(cmd_ctx, "---|--------------------|---------|------------|------------|------|------|------|---------");
1939
1940 while( tap ){
1941 u32 expected, expected_mask, cur_instr, ii;
1942 expected = buf_get_u32(tap->expected, 0, tap->ir_length);
1943 expected_mask = buf_get_u32(tap->expected_mask, 0, tap->ir_length);
1944 cur_instr = buf_get_u32(tap->cur_instr, 0, tap->ir_length);
1945
1946 command_print(cmd_ctx,
1947 "%2d | %-18s | %c | 0x%08x | 0x%08x | 0x%02x | 0x%02x | 0x%02x | 0x%02x",
1948 tap->abs_chain_position,
1949 tap->dotted_name,
1950 tap->enabled ? 'Y' : 'n',
1951 tap->idcode,
1952 (tap->expected_ids_cnt > 0 ? tap->expected_ids[0] : 0),
1953 tap->ir_length,
1954 expected,
1955 expected_mask,
1956 cur_instr);
1957
1958 for (ii = 1; ii < tap->expected_ids_cnt; ii++) {
1959 command_print(cmd_ctx, " | | | | 0x%08x | | | | ",
1960 tap->expected_ids[ii]);
1961 }
1962
1963 tap = tap->next_tap;
1964 }
1965
1966 return ERROR_OK;
1967 }
1968
1969 static int handle_reset_config_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1970 {
1971 int new_cfg = 0;
1972 int mask = 0;
1973
1974 if (argc < 1)
1975 return ERROR_COMMAND_SYNTAX_ERROR;
1976
1977 /* Original versions cared about the order of these tokens:
1978 * reset_config signals [combination [trst_type [srst_type]]]
1979 * They also clobbered the previous configuration even on error.
1980 *
1981 * Here we don't care about the order, and only change values
1982 * which have been explicitly specified.
1983 */
1984 for (; argc; argc--, args++) {
1985 int tmp = 0;
1986 int m;
1987
1988 /* signals */
1989 m = RESET_HAS_TRST | RESET_HAS_SRST;
1990 if (strcmp(*args, "none") == 0)
1991 tmp = RESET_NONE;
1992 else if (strcmp(*args, "trst_only") == 0)
1993 tmp = RESET_HAS_TRST;
1994 else if (strcmp(*args, "srst_only") == 0)
1995 tmp = RESET_HAS_SRST;
1996 else if (strcmp(*args, "trst_and_srst") == 0)
1997 tmp = RESET_HAS_TRST | RESET_HAS_SRST;
1998 else
1999 m = 0;
2000 if (mask & m) {
2001 LOG_ERROR("extra reset_config %s spec (%s)",
2002 "signal", *args);
2003 return ERROR_INVALID_ARGUMENTS;
2004 }
2005 if (m)
2006 goto next;
2007
2008 /* combination (options for broken wiring) */
2009 m = RESET_SRST_PULLS_TRST | RESET_TRST_PULLS_SRST;
2010 if (strcmp(*args, "separate") == 0)
2011 /* separate reset lines - default */;
2012 else if (strcmp(*args, "srst_pulls_trst") == 0)
2013 tmp |= RESET_SRST_PULLS_TRST;
2014 else if (strcmp(*args, "trst_pulls_srst") == 0)
2015 tmp |= RESET_TRST_PULLS_SRST;
2016 else if (strcmp(*args, "combined") == 0)
2017 tmp |= RESET_SRST_PULLS_TRST | RESET_TRST_PULLS_SRST;
2018 else
2019 m = 0;
2020 if (mask & m) {
2021 LOG_ERROR("extra reset_config %s spec (%s)",
2022 "combination", *args);
2023 return ERROR_INVALID_ARGUMENTS;
2024 }
2025 if (m)
2026 goto next;
2027
2028 /* trst_type (NOP without HAS_TRST) */
2029 m = RESET_TRST_OPEN_DRAIN;
2030 if (strcmp(*args, "trst_open_drain") == 0)
2031 tmp |= RESET_TRST_OPEN_DRAIN;
2032 else if (strcmp(*args, "trst_push_pull") == 0)
2033 /* push/pull from adapter - default */;
2034 else
2035 m = 0;
2036 if (mask & m) {
2037 LOG_ERROR("extra reset_config %s spec (%s)",
2038 "trst_type", *args);
2039 return ERROR_INVALID_ARGUMENTS;
2040 }
2041 if (m)
2042 goto next;
2043
2044 /* srst_type (NOP without HAS_SRST) */
2045 m |= RESET_SRST_PUSH_PULL;
2046 if (strcmp(*args, "srst_push_pull") == 0)
2047 tmp |= RESET_SRST_PUSH_PULL;
2048 else if (strcmp(*args, "srst_open_drain") == 0)
2049 /* open drain from adapter - default */;
2050 else
2051 m = 0;
2052 if (mask & m) {
2053 LOG_ERROR("extra reset_config %s spec (%s)",
2054 "srst_type", *args);
2055 return ERROR_INVALID_ARGUMENTS;
2056 }
2057 if (m)
2058 goto next;
2059
2060 /* caller provided nonsense; fail */
2061 LOG_ERROR("unknown reset_config flag (%s)", *args);
2062 return ERROR_INVALID_ARGUMENTS;
2063
2064 next:
2065 /* Remember the bits which were specified (mask)
2066 * and their new values (new_cfg).
2067 */
2068 mask |= m;
2069 new_cfg |= tmp;
2070 }
2071
2072 /* clear previous values of those bits, save new values */
2073 jtag_reset_config &= ~mask;
2074 jtag_reset_config |= new_cfg;
2075
2076 return ERROR_OK;
2077 }
2078
2079 static int handle_jtag_nsrst_delay_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2080 {
2081 if (argc < 1)
2082 {
2083 LOG_ERROR("jtag_nsrst_delay <ms> command takes one required argument");
2084 exit(-1);
2085 }
2086 else
2087 {
2088 jtag_set_nsrst_delay(strtoul(args[0], NULL, 0));
2089 }
2090
2091 return ERROR_OK;
2092 }
2093
2094 static int handle_jtag_ntrst_delay_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2095 {
2096 if (argc < 1)
2097 {
2098 LOG_ERROR("jtag_ntrst_delay <ms> command takes one required argument");
2099 exit(-1);
2100 }
2101 else
2102 {
2103 jtag_set_ntrst_delay(strtoul(args[0], NULL, 0));
2104 }
2105
2106 return ERROR_OK;
2107 }
2108
2109
2110 static int handle_jtag_speed_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2111 {
2112 int retval=ERROR_OK;
2113
2114 if (argc == 1)
2115 {
2116 LOG_DEBUG("handle jtag speed");
2117
2118 int cur_speed = 0;
2119 cur_speed = jtag_speed = strtoul(args[0], NULL, 0);
2120
2121 /* this command can be called during CONFIG,
2122 * in which case jtag isn't initialized */
2123 if (jtag)
2124 {
2125 retval=jtag->speed(cur_speed);
2126 }
2127 } else if (argc == 0)
2128 {
2129 } else
2130 {
2131 return ERROR_COMMAND_SYNTAX_ERROR;
2132 }
2133 command_print(cmd_ctx, "jtag_speed: %d", jtag_speed);
2134
2135 return retval;
2136 }
2137
2138 static int handle_jtag_khz_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2139 {
2140 int retval=ERROR_OK;
2141 LOG_DEBUG("handle jtag khz");
2142
2143 int cur_speed = 0;
2144 if(argc == 1)
2145 {
2146 jtag_set_speed_khz(strtoul(args[0], NULL, 0));
2147 if (jtag != NULL)
2148 {
2149 LOG_DEBUG("have interface set up");
2150 int speed_div1;
2151 if ((retval=jtag->khz(jtag_get_speed_khz(), &speed_div1))!=ERROR_OK)
2152 {
2153 jtag_set_speed_khz(0);
2154 return retval;
2155 }
2156
2157 cur_speed = jtag_speed = speed_div1;
2158
2159 retval=jtag->speed(cur_speed);
2160 } else
2161 {
2162 hasKHz = true;
2163 }
2164 } else if (argc==0)
2165 {
2166 } else
2167 {
2168 return ERROR_COMMAND_SYNTAX_ERROR;
2169 }
2170 cur_speed = jtag_get_speed_khz();
2171
2172 if (jtag!=NULL)
2173 {
2174 if ((retval=jtag->speed_div(jtag_speed, &cur_speed))!=ERROR_OK)
2175 return retval;
2176 }
2177
2178 if (cur_speed)
2179 command_print(cmd_ctx, "%d kHz", cur_speed);
2180 else
2181 command_print(cmd_ctx, "RCLK - adaptive");
2182 return retval;
2183
2184 }
2185
2186 static int handle_endstate_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2187 {
2188 if (argc < 1)
2189 return ERROR_COMMAND_SYNTAX_ERROR;
2190
2191 tap_state_t state = tap_state_by_name(args[0]);
2192 if (state < 0)
2193 {
2194 command_print( cmd_ctx, "Invalid state name: %s\n", args[0] );
2195 return ERROR_COMMAND_SYNTAX_ERROR;
2196 }
2197 jtag_set_end_state(state);
2198 jtag_execute_queue();
2199
2200 command_print(cmd_ctx, "current endstate: %s",
2201 tap_state_name(cmd_queue_end_state));
2202
2203 return ERROR_OK;
2204 }
2205
2206 static int handle_jtag_reset_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2207 {
2208 int trst = -1;
2209 int srst = -1;
2210
2211 if (argc < 2)
2212 {
2213 return ERROR_COMMAND_SYNTAX_ERROR;
2214 }
2215
2216 if (args[0][0] == '1')
2217 trst = 1;
2218 else if (args[0][0] == '0')
2219 trst = 0;
2220 else
2221 {
2222 return ERROR_COMMAND_SYNTAX_ERROR;
2223 }
2224
2225 if (args[1][0] == '1')
2226 srst = 1;
2227 else if (args[1][0] == '0')
2228 srst = 0;
2229 else
2230 {
2231 return ERROR_COMMAND_SYNTAX_ERROR;
2232 }
2233
2234 if (jtag_interface_init(cmd_ctx) != ERROR_OK)
2235 return ERROR_JTAG_INIT_FAILED;
2236
2237 jtag_add_reset(trst, srst);
2238 jtag_execute_queue();
2239
2240 return ERROR_OK;
2241 }
2242
2243 static int handle_runtest_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2244 {
2245 if (argc < 1)
2246 {
2247 return ERROR_COMMAND_SYNTAX_ERROR;
2248 }
2249
2250 jtag_add_runtest(strtol(args[0], NULL, 0), jtag_get_end_state());
2251 jtag_execute_queue();
2252
2253 return ERROR_OK;
2254
2255 }
2256
2257 /*
2258 * For "irscan" or "drscan" commands, the "end" (really, "next") state
2259 * should be stable ... and *NOT* a shift state, otherwise free-running
2260 * jtag clocks could change the values latched by the update state.
2261 */
2262 static bool scan_is_safe(tap_state_t state)
2263 {
2264 switch (state)
2265 {
2266 case TAP_RESET:
2267 case TAP_IDLE:
2268 case TAP_DRPAUSE:
2269 case TAP_IRPAUSE:
2270 return true;
2271 default:
2272 return false;
2273 }
2274 }
2275
2276
2277 static int handle_irscan_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2278 {
2279 int i;
2280 scan_field_t *fields;
2281 jtag_tap_t *tap;
2282 tap_state_t endstate;
2283
2284 if ((argc < 2) || (argc % 2))
2285 {
2286 return ERROR_COMMAND_SYNTAX_ERROR;
2287 }
2288
2289 /* optional "-endstate" "statename" at the end of the arguments,
2290 * so that e.g. IRPAUSE can let us load the data register before
2291 * entering RUN/IDLE to execute the instruction we load here.
2292 */
2293 endstate = TAP_IDLE;
2294
2295 if( argc >= 4 ){
2296 /* have at least one pair of numbers. */
2297 /* is last pair the magic text? */
2298 if( 0 == strcmp( "-endstate", args[ argc - 2 ] ) ){
2299 const char *cpA;
2300 const char *cpS;
2301 cpA = args[ argc-1 ];
2302 for( endstate = 0 ; endstate < TAP_NUM_STATES ; endstate++ ){
2303 cpS = tap_state_name( endstate );
2304 if( 0 == strcmp( cpA, cpS ) ){
2305 break;
2306 }
2307 }
2308 if( endstate >= TAP_NUM_STATES ){
2309 return ERROR_COMMAND_SYNTAX_ERROR;
2310 } else {
2311 if (!scan_is_safe(endstate))
2312 LOG_WARNING("irscan with unsafe "
2313 "endstate \"%s\"", cpA);
2314 /* found - remove the last 2 args */
2315 argc -= 2;
2316 }
2317 }
2318 }
2319
2320 int num_fields = argc / 2;
2321
2322 fields = malloc(sizeof(scan_field_t) * num_fields);
2323
2324 for (i = 0; i < num_fields; i++)
2325 {
2326 tap = jtag_tap_by_string( args[i*2] );
2327 if (tap==NULL)
2328 {
2329 command_print( cmd_ctx, "Tap: %s unknown", args[i*2] );
2330 return ERROR_FAIL;
2331 }
2332 int field_size = tap->ir_length;
2333 fields[i].tap = tap;
2334 fields[i].num_bits = field_size;
2335 fields[i].out_value = malloc(CEIL(field_size, 8));
2336 buf_set_u32(fields[i].out_value, 0, field_size, strtoul(args[i*2+1], NULL, 0));
2337 fields[i].in_value = NULL;
2338 }
2339
2340 /* did we have an endstate? */
2341 jtag_add_ir_scan(num_fields, fields, endstate);
2342
2343 int retval=jtag_execute_queue();
2344
2345 for (i = 0; i < num_fields; i++)
2346 free(fields[i].out_value);
2347
2348 free (fields);
2349
2350 return retval;
2351 }
2352
2353 static int Jim_Command_drscan(Jim_Interp *interp, int argc, Jim_Obj *const *args)
2354 {
2355 int retval;
2356 scan_field_t *fields;
2357 int num_fields;
2358 int field_count = 0;
2359 int i, e;
2360 jtag_tap_t *tap;
2361 tap_state_t endstate;
2362
2363 /* args[1] = device
2364 * args[2] = num_bits
2365 * args[3] = hex string
2366 * ... repeat num bits and hex string ...
2367 *
2368 * .. optionally:
2369 * args[N-2] = "-endstate"
2370 * args[N-1] = statename
2371 */
2372 if ((argc < 4) || ((argc % 2)!=0))
2373 {
2374 Jim_WrongNumArgs(interp, 1, args, "wrong arguments");
2375 return JIM_ERR;
2376 }
2377
2378 endstate = TAP_IDLE;
2379
2380 /* validate arguments as numbers */
2381 e = JIM_OK;
2382 for (i = 2; i < argc; i+=2)
2383 {
2384 long bits;
2385 const char *cp;
2386
2387 e = Jim_GetLong(interp, args[i], &bits);
2388 /* If valid - try next arg */
2389 if( e == JIM_OK ){
2390 continue;
2391 }
2392
2393 /* Not valid.. are we at the end? */
2394 if ( ((i+2) != argc) ){
2395 /* nope, then error */
2396 return e;
2397 }
2398
2399 /* it could be: "-endstate FOO"
2400 * e.g. DRPAUSE so we can issue more instructions
2401 * before entering RUN/IDLE and executing them.
2402 */
2403
2404 /* get arg as a string. */
2405 cp = Jim_GetString( args[i], NULL );
2406 /* is it the magic? */
2407 if( 0 == strcmp( "-endstate", cp ) ){
2408 /* is the statename valid? */
2409 cp = Jim_GetString( args[i+1], NULL );
2410
2411 /* see if it is a valid state name */
2412 endstate = tap_state_by_name(cp);
2413 if( endstate < 0 ){
2414 /* update the error message */
2415 Jim_SetResult_sprintf(interp,"endstate: %s invalid", cp );
2416 } else {
2417 if (!scan_is_safe(endstate))
2418 LOG_WARNING("drscan with unsafe "
2419 "endstate \"%s\"", cp);
2420
2421 /* valid - so clear the error */
2422 e = JIM_OK;
2423 /* and remove the last 2 args */
2424 argc -= 2;
2425 }
2426 }
2427
2428 /* Still an error? */
2429 if( e != JIM_OK ){
2430 return e; /* too bad */
2431 }
2432 } /* validate args */
2433
2434 tap = jtag_tap_by_jim_obj( interp, args[1] );
2435 if( tap == NULL ){
2436 return JIM_ERR;
2437 }
2438
2439 num_fields=(argc-2)/2;
2440 fields = malloc(sizeof(scan_field_t) * num_fields);
2441 for (i = 2; i < argc; i+=2)
2442 {
2443 long bits;
2444 int len;
2445 const char *str;
2446
2447 Jim_GetLong(interp, args[i], &bits);
2448 str = Jim_GetString(args[i+1], &len);
2449
2450 fields[field_count].tap = tap;
2451 fields[field_count].num_bits = bits;
2452 fields[field_count].out_value = malloc(CEIL(bits, 8));
2453 str_to_buf(str, len, fields[field_count].out_value, bits, 0);
2454 fields[field_count].in_value = fields[field_count].out_value;
2455 field_count++;
2456 }
2457
2458 jtag_add_dr_scan(num_fields, fields, endstate);
2459
2460 retval = jtag_execute_queue();
2461 if (retval != ERROR_OK)
2462 {
2463 Jim_SetResultString(interp, "drscan: jtag execute failed",-1);
2464 return JIM_ERR;
2465 }
2466
2467 field_count=0;
2468 Jim_Obj *list = Jim_NewListObj(interp, NULL, 0);
2469 for (i = 2; i < argc; i+=2)
2470 {
2471 long bits;
2472 char *str;
2473
2474 Jim_GetLong(interp, args[i], &bits);
2475 str = buf_to_str(fields[field_count].in_value, bits, 16);
2476 free(fields[field_count].out_value);
2477
2478 Jim_ListAppendElement(interp, list, Jim_NewStringObj(interp, str, strlen(str)));
2479 free(str);
2480 field_count++;
2481 }
2482
2483 Jim_SetResult(interp, list);
2484
2485 free(fields);
2486
2487 return JIM_OK;
2488 }
2489
2490
2491 static int Jim_Command_flush_count(Jim_Interp *interp, int argc, Jim_Obj *const *args)
2492 {
2493 Jim_SetResult(interp, Jim_NewIntObj(interp, jtag_get_flush_queue_count()));
2494
2495 return JIM_OK;
2496 }
2497
2498
2499 static int handle_verify_ircapture_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2500 {
2501 if (argc == 1)
2502 {
2503 if (strcmp(args[0], "enable") == 0)
2504 {
2505 jtag_verify_capture_ir = 1;
2506 }
2507 else if (strcmp(args[0], "disable") == 0)
2508 {
2509 jtag_verify_capture_ir = 0;
2510 } else
2511 {
2512 return ERROR_COMMAND_SYNTAX_ERROR;
2513 }
2514 } else if (argc != 0)
2515 {
2516 return ERROR_COMMAND_SYNTAX_ERROR;
2517 }
2518
2519 command_print(cmd_ctx, "verify Capture-IR is %s", (jtag_verify_capture_ir) ? "enabled": "disabled");
2520
2521 return ERROR_OK;
2522 }
2523
2524 void jtag_set_verify(bool enable)
2525 {
2526 jtag_verify = enable;
2527 }
2528
2529 bool jtag_will_verify()
2530 {
2531 return jtag_verify;
2532 }
2533
2534 static int handle_verify_jtag_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2535 {
2536 if (argc > 1)
2537 return ERROR_COMMAND_SYNTAX_ERROR;
2538
2539 if (argc == 1)
2540 {
2541 if (strcmp(args[0], "enable") == 0)
2542 jtag_set_verify(true);
2543 else if (strcmp(args[0], "disable") == 0)
2544 jtag_set_verify(false);
2545 else
2546 return ERROR_COMMAND_SYNTAX_ERROR;
2547 }
2548
2549 const char *status = jtag_will_verify() ? "enabled": "disabled";
2550 command_print(cmd_ctx, "verify jtag capture is %s", status);
2551
2552 return ERROR_OK;
2553 }
2554
2555
2556 int jtag_power_dropout(int *dropout)
2557 {
2558 return jtag->power_dropout(dropout);
2559 }
2560
2561 int jtag_srst_asserted(int *srst_asserted)
2562 {
2563 return jtag->srst_asserted(srst_asserted);
2564 }
2565
2566 void jtag_tap_handle_event( jtag_tap_t * tap, enum jtag_tap_event e)
2567 {
2568 jtag_tap_event_action_t * jteap;
2569 int done;
2570
2571 jteap = tap->event_action;
2572
2573 done = 0;
2574 while (jteap) {
2575 if (jteap->event == e) {
2576 done = 1;
2577 LOG_DEBUG( "JTAG tap: %s event: %d (%s) action: %s\n",
2578 tap->dotted_name,
2579 e,
2580 Jim_Nvp_value2name_simple(nvp_jtag_tap_event, e)->name,
2581 Jim_GetString(jteap->body, NULL) );
2582 if (Jim_EvalObj(interp, jteap->body) != JIM_OK) {
2583 Jim_PrintErrorMessage(interp);
2584 }
2585 }
2586
2587 jteap = jteap->next;
2588 }
2589
2590 if (!done) {
2591 LOG_DEBUG( "event %d %s - no action",
2592 e,
2593 Jim_Nvp_value2name_simple( nvp_jtag_tap_event, e)->name);
2594 }
2595 }
2596
2597 static int handle_tms_sequence_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2598 {
2599 if (argc > 1)
2600 return ERROR_COMMAND_SYNTAX_ERROR;
2601
2602 if (argc == 1)
2603 {
2604 bool use_new_table;
2605 if (strcmp(args[0], "short") == 0)
2606 use_new_table = true;
2607 else if (strcmp(args[0], "long") == 0)
2608 use_new_table = false;
2609 else
2610 return ERROR_COMMAND_SYNTAX_ERROR;
2611
2612 tap_use_new_tms_table(use_new_table);
2613 }
2614
2615 command_print(cmd_ctx, "tms sequence is %s",
2616 tap_uses_new_tms_table() ? "short": "long");
2617
2618 return ERROR_OK;
2619 }
2620
2621 /**
2622 * Function jtag_add_statemove
2623 * moves from the current state to the goal \a state. This needs
2624 * to be handled according to the xsvf spec, see the XSTATE command
2625 * description.
2626 */
2627 int jtag_add_statemove(tap_state_t goal_state)
2628 {
2629 int retval = ERROR_OK;
2630
2631 tap_state_t moves[8];
2632 tap_state_t cur_state = cmd_queue_cur_state;
2633 int i;
2634 int tms_bits;
2635 int tms_count;
2636
2637 LOG_DEBUG( "cur_state=%s goal_state=%s",
2638 tap_state_name(cur_state),
2639 tap_state_name(goal_state) );
2640
2641
2642 /* From the XSVF spec, pertaining to XSTATE:
2643
2644 For special states known as stable states (Test-Logic-Reset,
2645 Run-Test/Idle, Pause-DR, Pause- IR), an XSVF interpreter follows
2646 predefined TAP state paths when the starting state is a stable state and
2647 when the XSTATE specifies a new stable state (see the STATE command in
2648 the [Ref 5] for the TAP state paths between stable states). For
2649 non-stable states, XSTATE should specify a state that is only one TAP
2650 state transition distance from the current TAP state to avoid undefined
2651 TAP state paths. A sequence of multiple XSTATE commands can be issued to
2652 transition the TAP through a specific state path.
2653 */
2654
2655 if (goal_state==cur_state )
2656 ; /* nothing to do */
2657
2658 else if( goal_state==TAP_RESET )
2659 {
2660 jtag_add_tlr();
2661 }
2662
2663 else if( tap_is_state_stable(cur_state) && tap_is_state_stable(goal_state) )
2664 {
2665 /* note: unless tms_bits holds a path that agrees with [Ref 5] in above
2666 spec, then this code is not fully conformant to the xsvf spec. This
2667 puts a burden on tap_get_tms_path() function from the xsvf spec.
2668 If in doubt, you should confirm that that burden is being met.
2669 */
2670
2671 tms_bits = tap_get_tms_path(cur_state, goal_state);
2672 tms_count = tap_get_tms_path_len(cur_state, goal_state);
2673
2674 assert( (unsigned) tms_count < DIM(moves) );
2675
2676 for (i=0; i<tms_count; i++, tms_bits>>=1)
2677 {
2678 bool bit = tms_bits & 1;
2679
2680 cur_state = tap_state_transition(cur_state, bit);
2681 moves[i] = cur_state;
2682 }
2683
2684 jtag_add_pathmove(tms_count, moves);
2685 }
2686
2687 /* else state must be immediately reachable in one clock cycle, and does not
2688 need to be a stable state.
2689 */
2690 else if( tap_state_transition(cur_state, true) == goal_state
2691 || tap_state_transition(cur_state, false) == goal_state )
2692 {
2693 /* move a single state */
2694 moves[0] = goal_state;
2695 jtag_add_pathmove( 1, moves );
2696 }
2697
2698 else
2699 {
2700 retval = ERROR_FAIL;
2701 }
2702
2703 return retval;
2704 }
2705
2706 void jtag_set_nsrst_delay(unsigned delay)
2707 {
2708 jtag_nsrst_delay = delay;
2709 }
2710 void jtag_set_ntrst_delay(unsigned delay)
2711 {
2712 jtag_ntrst_delay = delay;
2713 }
2714
2715
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