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Simplify jtag_add_dr_scan:
[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 #elif defined(BUILD_MINIDRIVER_DUMMY)
101 extern jtag_interface_t minidummy_interface;
102 #else // standard drivers
103 #if BUILD_PARPORT == 1
104 extern jtag_interface_t parport_interface;
105 #endif
106
107 #if BUILD_DUMMY == 1
108 extern jtag_interface_t dummy_interface;
109 #endif
110
111 #if BUILD_FT2232_FTD2XX == 1
112 extern jtag_interface_t ft2232_interface;
113 #endif
114
115 #if BUILD_FT2232_LIBFTDI == 1
116 extern jtag_interface_t ft2232_interface;
117 #endif
118
119 #if BUILD_AMTJTAGACCEL == 1
120 extern jtag_interface_t amt_jtagaccel_interface;
121 #endif
122
123 #if BUILD_EP93XX == 1
124 extern jtag_interface_t ep93xx_interface;
125 #endif
126
127 #if BUILD_AT91RM9200 == 1
128 extern jtag_interface_t at91rm9200_interface;
129 #endif
130
131 #if BUILD_GW16012 == 1
132 extern jtag_interface_t gw16012_interface;
133 #endif
134
135 #if BUILD_PRESTO_LIBFTDI == 1 || BUILD_PRESTO_FTD2XX == 1
136 extern jtag_interface_t presto_interface;
137 #endif
138
139 #if BUILD_USBPROG == 1
140 extern jtag_interface_t usbprog_interface;
141 #endif
142
143 #if BUILD_JLINK == 1
144 extern jtag_interface_t jlink_interface;
145 #endif
146
147 #if BUILD_VSLLINK == 1
148 extern jtag_interface_t vsllink_interface;
149 #endif
150
151 #if BUILD_RLINK == 1
152 extern jtag_interface_t rlink_interface;
153 #endif
154
155 #if BUILD_ARMJTAGEW == 1
156 extern jtag_interface_t armjtagew_interface;
157 #endif
158 #endif // standard drivers
159
160 /**
161 * The list of built-in JTAG interfaces, containing entries for those
162 * drivers that were enabled by the @c configure script.
163 *
164 * The list should be defined to contain either one minidriver interface
165 * or some number of standard driver interfaces, never both.
166 */
167 jtag_interface_t *jtag_interfaces[] = {
168 #if BUILD_ECOSBOARD == 1
169 &zy1000_interface,
170 #elif defined(BUILD_MINIDRIVER_DUMMY)
171 &minidummy_interface,
172 #else // standard drivers
173 #if BUILD_PARPORT == 1
174 &parport_interface,
175 #endif
176 #if BUILD_DUMMY == 1
177 &dummy_interface,
178 #endif
179 #if BUILD_FT2232_FTD2XX == 1
180 &ft2232_interface,
181 #endif
182 #if BUILD_FT2232_LIBFTDI == 1
183 &ft2232_interface,
184 #endif
185 #if BUILD_AMTJTAGACCEL == 1
186 &amt_jtagaccel_interface,
187 #endif
188 #if BUILD_EP93XX == 1
189 &ep93xx_interface,
190 #endif
191 #if BUILD_AT91RM9200 == 1
192 &at91rm9200_interface,
193 #endif
194 #if BUILD_GW16012 == 1
195 &gw16012_interface,
196 #endif
197 #if BUILD_PRESTO_LIBFTDI == 1 || BUILD_PRESTO_FTD2XX == 1
198 &presto_interface,
199 #endif
200 #if BUILD_USBPROG == 1
201 &usbprog_interface,
202 #endif
203 #if BUILD_JLINK == 1
204 &jlink_interface,
205 #endif
206 #if BUILD_VSLLINK == 1
207 &vsllink_interface,
208 #endif
209 #if BUILD_RLINK == 1
210 &rlink_interface,
211 #endif
212 #if BUILD_ARMJTAGEW == 1
213 &armjtagew_interface,
214 #endif
215 #endif // standard drivers
216 NULL,
217 };
218
219 struct jtag_interface_s *jtag = NULL;
220
221 /* configuration */
222 static jtag_interface_t *jtag_interface = NULL;
223 int jtag_speed = 0;
224
225 /* jtag commands */
226 static int handle_interface_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
227 static int handle_jtag_speed_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
228 static int handle_jtag_khz_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
229 static int handle_jtag_device_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
230 static int handle_reset_config_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
231 static int handle_jtag_nsrst_delay_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
232 static int handle_jtag_ntrst_delay_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
233
234 static int handle_scan_chain_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
235
236 static int handle_jtag_reset_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
237 static int handle_runtest_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
238 static int handle_irscan_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
239 static int Jim_Command_drscan(Jim_Interp *interp, int argc, Jim_Obj *const *argv);
240 static int Jim_Command_flush_count(Jim_Interp *interp, int argc, Jim_Obj *const *args);
241
242 static int handle_verify_ircapture_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
243 static int handle_verify_jtag_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
244 static int handle_tms_sequence_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
245
246 jtag_tap_t *jtag_all_taps(void)
247 {
248 return __jtag_all_taps;
249 };
250
251 int jtag_tap_count(void)
252 {
253 return jtag_num_taps;
254 }
255
256 unsigned jtag_tap_count_enabled(void)
257 {
258 jtag_tap_t *t;
259 unsigned n;
260
261 n = 0;
262 t = jtag_all_taps();
263 while(t){
264 if( t->enabled ){
265 n++;
266 }
267 t = t->next_tap;
268 }
269 return n;
270 }
271
272 /// Append a new TAP to the chain of all taps.
273 static void jtag_tap_add(struct jtag_tap_s *t)
274 {
275 t->abs_chain_position = jtag_num_taps++;
276
277 jtag_tap_t **tap = &__jtag_all_taps;
278 while(*tap != NULL)
279 tap = &(*tap)->next_tap;
280 *tap = t;
281 }
282
283 jtag_tap_t *jtag_tap_by_string( const char *s )
284 {
285 jtag_tap_t *t;
286 char *cp;
287
288 t = jtag_all_taps();
289 /* try name first */
290 while(t){
291 if( 0 == strcmp( t->dotted_name, s ) ){
292 break;
293 } else {
294 t = t->next_tap;
295 }
296 }
297 /* backup plan is by number */
298 if( t == NULL ){
299 /* ok - is "s" a number? */
300 int n;
301 n = strtol( s, &cp, 0 );
302 if( (s != cp) && (*cp == 0) ){
303 /* Then it is... */
304 t = jtag_tap_by_abs_position(n);
305 }
306 }
307 return t;
308 }
309
310 jtag_tap_t * jtag_tap_by_jim_obj( Jim_Interp *interp, Jim_Obj *o )
311 {
312 jtag_tap_t *t;
313 const char *cp;
314
315 cp = Jim_GetString( o, NULL );
316 if(cp == NULL){
317 cp = "(unknown)";
318 t = NULL;
319 } else {
320 t = jtag_tap_by_string( cp );
321 }
322 if( t == NULL ){
323 Jim_SetResult_sprintf(interp,"Tap: %s is unknown", cp );
324 }
325 return t;
326 }
327
328 /* returns a pointer to the n-th device in the scan chain */
329 jtag_tap_t * jtag_tap_by_abs_position( int n )
330 {
331 int orig_n;
332 jtag_tap_t *t;
333
334 orig_n = n;
335 t = jtag_all_taps();
336
337 while( t && (n > 0)) {
338 n--;
339 t = t->next_tap;
340 }
341 return t;
342 }
343
344 const char *jtag_tap_name(const jtag_tap_t *tap)
345 {
346 return (tap == NULL) ? "(unknown)" : tap->dotted_name;
347 }
348
349
350 int jtag_register_event_callback(int (*callback)(enum jtag_event event, void *priv), void *priv)
351 {
352 jtag_event_callback_t **callbacks_p = &jtag_event_callbacks;
353
354 if (callback == NULL)
355 {
356 return ERROR_INVALID_ARGUMENTS;
357 }
358
359 if (*callbacks_p)
360 {
361 while ((*callbacks_p)->next)
362 callbacks_p = &((*callbacks_p)->next);
363 callbacks_p = &((*callbacks_p)->next);
364 }
365
366 (*callbacks_p) = malloc(sizeof(jtag_event_callback_t));
367 (*callbacks_p)->callback = callback;
368 (*callbacks_p)->priv = priv;
369 (*callbacks_p)->next = NULL;
370
371 return ERROR_OK;
372 }
373
374 int jtag_unregister_event_callback(int (*callback)(enum jtag_event event, void *priv))
375 {
376 jtag_event_callback_t **callbacks_p = &jtag_event_callbacks;
377
378 if (callback == NULL)
379 {
380 return ERROR_INVALID_ARGUMENTS;
381 }
382
383 while (*callbacks_p)
384 {
385 jtag_event_callback_t **next = &((*callbacks_p)->next);
386 if ((*callbacks_p)->callback == callback)
387 {
388 free(*callbacks_p);
389 *callbacks_p = *next;
390 }
391 callbacks_p = next;
392 }
393
394 return ERROR_OK;
395 }
396
397 int jtag_call_event_callbacks(enum jtag_event event)
398 {
399 jtag_event_callback_t *callback = jtag_event_callbacks;
400
401 LOG_DEBUG("jtag event: %s", jtag_event_strings[event]);
402
403 while (callback)
404 {
405 callback->callback(event, callback->priv);
406 callback = callback->next;
407 }
408
409 return ERROR_OK;
410 }
411
412 static void jtag_checks(void)
413 {
414 assert(jtag_trst == 0);
415 }
416
417 static void jtag_prelude(tap_state_t state)
418 {
419 jtag_checks();
420
421 assert(state!=TAP_INVALID);
422
423 cmd_queue_cur_state = state;
424 }
425
426 void jtag_alloc_in_value32(scan_field_t *field)
427 {
428 interface_jtag_alloc_in_value32(field);
429 }
430
431 void jtag_add_ir_scan_noverify(int in_count, const scan_field_t *in_fields,
432 tap_state_t state)
433 {
434 jtag_prelude(state);
435
436 int retval = interface_jtag_add_ir_scan(in_count, in_fields, state);
437 jtag_set_error(retval);
438 }
439
440
441 /**
442 * Generate an IR SCAN with a list of scan fields with one entry for each enabled TAP.
443 *
444 * If the input field list contains an instruction value for a TAP then that is used
445 * otherwise the TAP is set to bypass.
446 *
447 * TAPs for which no fields are passed are marked as bypassed for subsequent DR SCANs.
448 *
449 */
450 void jtag_add_ir_scan(int in_num_fields, scan_field_t *in_fields, tap_state_t state)
451 {
452 if (jtag_verify&&jtag_verify_capture_ir)
453 {
454 /* 8 x 32 bit id's is enough for all invocations */
455
456 for (int j = 0; j < in_num_fields; j++)
457 {
458 /* if we are to run a verification of the ir scan, we need to get the input back.
459 * We may have to allocate space if the caller didn't ask for the input back.
460 */
461 in_fields[j].check_value=in_fields[j].tap->expected;
462 in_fields[j].check_mask=in_fields[j].tap->expected_mask;
463 }
464 jtag_add_scan_check(jtag_add_ir_scan_noverify, in_num_fields, in_fields, state);
465 } else
466 {
467 jtag_add_ir_scan_noverify(in_num_fields, in_fields, state);
468 }
469 }
470
471 /**
472 * Duplicate the scan fields passed into the function into an IR SCAN command
473 *
474 * This function assumes that the caller handles extra fields for bypassed TAPs
475 *
476 */
477 void jtag_add_plain_ir_scan(int in_num_fields, const scan_field_t *in_fields,
478 tap_state_t state)
479 {
480 jtag_prelude(state);
481
482 int retval = interface_jtag_add_plain_ir_scan(
483 in_num_fields, in_fields, state);
484 jtag_set_error(retval);
485 }
486
487 void jtag_add_callback(jtag_callback1_t f, u8 *in)
488 {
489 interface_jtag_add_callback(f, in);
490 }
491
492 void jtag_add_callback4(jtag_callback_t f, u8 *in,
493 jtag_callback_data_t data1, jtag_callback_data_t data2,
494 jtag_callback_data_t data3)
495 {
496 interface_jtag_add_callback4(f, in, data1, data2, data3);
497 }
498
499 int jtag_check_value_inner(u8 *captured, u8 *in_check_value, u8 *in_check_mask, int num_bits);
500
501 static int jtag_check_value_mask_callback(u8 *in, jtag_callback_data_t data1, jtag_callback_data_t data2, jtag_callback_data_t data3)
502 {
503 return jtag_check_value_inner(in, (u8 *)data1, (u8 *)data2, (int)data3);
504 }
505
506 static void jtag_add_scan_check(void (*jtag_add_scan)(int in_num_fields, const scan_field_t *in_fields, tap_state_t state),
507 int in_num_fields, scan_field_t *in_fields, tap_state_t state)
508 {
509 for (int i = 0; i < in_num_fields; i++)
510 {
511 struct scan_field_s *field = &in_fields[i];
512 field->allocated = 0;
513 field->modified = 0;
514 if (field->check_value || field->in_value)
515 continue;
516 interface_jtag_add_scan_check_alloc(field);
517 field->modified = 1;
518 }
519
520 jtag_add_scan(in_num_fields, in_fields, state);
521
522 for (int i = 0; i < in_num_fields; i++)
523 {
524 if ((in_fields[i].check_value != NULL) && (in_fields[i].in_value != NULL))
525 {
526 /* this is synchronous for a minidriver */
527 jtag_add_callback4(jtag_check_value_mask_callback, in_fields[i].in_value,
528 (jtag_callback_data_t)in_fields[i].check_value,
529 (jtag_callback_data_t)in_fields[i].check_mask,
530 (jtag_callback_data_t)in_fields[i].num_bits);
531 }
532 if (in_fields[i].allocated)
533 {
534 free(in_fields[i].in_value);
535 }
536 if (in_fields[i].modified)
537 {
538 in_fields[i].in_value = NULL;
539 }
540 }
541 }
542
543 void jtag_add_dr_scan_check(int in_num_fields, scan_field_t *in_fields, tap_state_t state)
544 {
545 if (jtag_verify)
546 {
547 jtag_add_scan_check(jtag_add_dr_scan, in_num_fields, in_fields, state);
548 } else
549 {
550 jtag_add_dr_scan(in_num_fields, in_fields, state);
551 }
552 }
553
554
555 /**
556 * Generate a DR SCAN using the fields passed to the function.
557 * For connected TAPs, the function checks in_fields and uses fields
558 * specified there. For bypassed TAPs, the function generates a dummy
559 * 1-bit field. The bypass status of TAPs is set by jtag_add_ir_scan().
560 */
561 void jtag_add_dr_scan(int in_num_fields, const scan_field_t *in_fields,
562 tap_state_t state)
563 {
564 jtag_prelude(state);
565
566 int retval;
567 retval = interface_jtag_add_dr_scan(in_num_fields, in_fields, state);
568 jtag_set_error(retval);
569 }
570
571
572
573 /**
574 * Duplicate the scan fields passed into the function into a DR SCAN command
575 *
576 * This function assumes that the caller handles extra fields for bypassed TAPs
577 *
578 */
579 void jtag_add_plain_dr_scan(int in_num_fields, const scan_field_t *in_fields, tap_state_t state)
580 {
581 int retval;
582
583 jtag_prelude(state);
584
585 retval=interface_jtag_add_plain_dr_scan(in_num_fields, in_fields, state);
586 if (retval!=ERROR_OK)
587 jtag_error=retval;
588 }
589
590 void jtag_add_dr_out(jtag_tap_t* tap,
591 int num_fields, const int* num_bits, const u32* value,
592 tap_state_t end_state)
593 {
594 assert(end_state != TAP_INVALID);
595
596 cmd_queue_cur_state = end_state;
597
598 interface_jtag_add_dr_out(tap,
599 num_fields, num_bits, value,
600 end_state);
601 }
602
603 void jtag_add_tlr(void)
604 {
605 jtag_prelude(TAP_RESET);
606
607 int retval;
608 retval=interface_jtag_add_tlr();
609 if (retval!=ERROR_OK)
610 jtag_error=retval;
611
612 jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
613 }
614
615 void jtag_add_pathmove(int num_states, const tap_state_t *path)
616 {
617 tap_state_t cur_state = cmd_queue_cur_state;
618 int i;
619 int retval;
620
621 /* the last state has to be a stable state */
622 if (!tap_is_state_stable(path[num_states - 1]))
623 {
624 LOG_ERROR("BUG: TAP path doesn't finish in a stable state");
625 exit(-1);
626 }
627
628 for (i=0; i<num_states; i++)
629 {
630 if (path[i] == TAP_RESET)
631 {
632 LOG_ERROR("BUG: TAP_RESET is not a valid state for pathmove sequences");
633 exit(-1);
634 }
635
636 if ( tap_state_transition(cur_state, true) != path[i]
637 && tap_state_transition(cur_state, false) != path[i])
638 {
639 LOG_ERROR("BUG: %s -> %s isn't a valid TAP transition", tap_state_name(cur_state), tap_state_name(path[i]));
640 exit(-1);
641 }
642 cur_state = path[i];
643 }
644
645 jtag_checks();
646
647 retval = interface_jtag_add_pathmove(num_states, path);
648 cmd_queue_cur_state = path[num_states - 1];
649 if (retval!=ERROR_OK)
650 jtag_error=retval;
651 }
652
653 void jtag_add_runtest(int num_cycles, tap_state_t state)
654 {
655 int retval;
656
657 jtag_prelude(state);
658
659 /* executed by sw or hw fifo */
660 retval=interface_jtag_add_runtest(num_cycles, state);
661 if (retval!=ERROR_OK)
662 jtag_error=retval;
663 }
664
665
666 void jtag_add_clocks( int num_cycles )
667 {
668 int retval;
669
670 if( !tap_is_state_stable(cmd_queue_cur_state) )
671 {
672 LOG_ERROR( "jtag_add_clocks() was called with TAP in non-stable state \"%s\"",
673 tap_state_name(cmd_queue_cur_state) );
674 jtag_error = ERROR_JTAG_NOT_STABLE_STATE;
675 return;
676 }
677
678 if( num_cycles > 0 )
679 {
680 jtag_checks();
681
682 retval = interface_jtag_add_clocks(num_cycles);
683 if (retval != ERROR_OK)
684 jtag_error=retval;
685 }
686 }
687
688 void jtag_add_reset(int req_tlr_or_trst, int req_srst)
689 {
690 int trst_with_tlr = 0;
691 int retval;
692
693 /* FIX!!! there are *many* different cases here. A better
694 * approach is needed for legal combinations of transitions...
695 */
696 if ((jtag_reset_config & RESET_HAS_SRST)&&
697 (jtag_reset_config & RESET_HAS_TRST)&&
698 ((jtag_reset_config & RESET_SRST_PULLS_TRST)==0))
699 {
700 if (((req_tlr_or_trst&&!jtag_trst)||
701 (!req_tlr_or_trst&&jtag_trst))&&
702 ((req_srst&&!jtag_srst)||
703 (!req_srst&&jtag_srst)))
704 {
705 /* FIX!!! srst_pulls_trst allows 1,1 => 0,0 transition.... */
706 //LOG_ERROR("BUG: transition of req_tlr_or_trst and req_srst in the same jtag_add_reset() call is undefined");
707 }
708 }
709
710 /* Make sure that jtag_reset_config allows the requested reset */
711 /* if SRST pulls TRST, we can't fulfill srst == 1 with trst == 0 */
712 if (((jtag_reset_config & RESET_SRST_PULLS_TRST) && (req_srst == 1)) && (!req_tlr_or_trst))
713 {
714 LOG_ERROR("BUG: requested reset would assert trst");
715 jtag_error=ERROR_FAIL;
716 return;
717 }
718
719 /* if TRST pulls SRST, we reset with TAP T-L-R */
720 if (((jtag_reset_config & RESET_TRST_PULLS_SRST) && (req_tlr_or_trst)) && (req_srst == 0))
721 {
722 trst_with_tlr = 1;
723 }
724
725 if (req_srst && !(jtag_reset_config & RESET_HAS_SRST))
726 {
727 LOG_ERROR("BUG: requested SRST assertion, but the current configuration doesn't support this");
728 jtag_error=ERROR_FAIL;
729 return;
730 }
731
732 if (req_tlr_or_trst)
733 {
734 if (!trst_with_tlr && (jtag_reset_config & RESET_HAS_TRST))
735 {
736 jtag_trst = 1;
737 } else
738 {
739 trst_with_tlr = 1;
740 }
741 } else
742 {
743 jtag_trst = 0;
744 }
745
746 jtag_srst = req_srst;
747
748 retval = interface_jtag_add_reset(jtag_trst, jtag_srst);
749 if (retval!=ERROR_OK)
750 {
751 jtag_error=retval;
752 return;
753 }
754 jtag_execute_queue();
755
756 if (jtag_srst)
757 {
758 LOG_DEBUG("SRST line asserted");
759 }
760 else
761 {
762 LOG_DEBUG("SRST line released");
763 if (jtag_nsrst_delay)
764 jtag_add_sleep(jtag_nsrst_delay * 1000);
765 }
766
767 if (trst_with_tlr)
768 {
769 LOG_DEBUG("JTAG reset with RESET instead of TRST");
770 jtag_set_end_state(TAP_RESET);
771 jtag_add_tlr();
772 return;
773 }
774
775 if (jtag_trst)
776 {
777 /* we just asserted nTRST, so we're now in Test-Logic-Reset,
778 * and inform possible listeners about this
779 */
780 LOG_DEBUG("TRST line asserted");
781 tap_set_state(TAP_RESET);
782 jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
783 }
784 else
785 {
786 if (jtag_ntrst_delay)
787 jtag_add_sleep(jtag_ntrst_delay * 1000);
788 }
789 }
790
791 tap_state_t jtag_set_end_state(tap_state_t state)
792 {
793 if ((state == TAP_DRSHIFT)||(state == TAP_IRSHIFT))
794 {
795 LOG_ERROR("BUG: TAP_DRSHIFT/IRSHIFT can't be end state. Calling code should use a larger scan field");
796 }
797
798 if (state!=TAP_INVALID)
799 cmd_queue_end_state = state;
800 return cmd_queue_end_state;
801 }
802
803 tap_state_t jtag_get_end_state(void)
804 {
805 return cmd_queue_end_state;
806 }
807
808 void jtag_add_sleep(u32 us)
809 {
810 keep_alive(); /* we might be running on a very slow JTAG clk */
811 int retval=interface_jtag_add_sleep(us);
812 if (retval!=ERROR_OK)
813 jtag_error=retval;
814 return;
815 }
816
817 int jtag_check_value_inner(u8 *captured, u8 *in_check_value, u8 *in_check_mask, int num_bits)
818 {
819 int retval = ERROR_OK;
820
821 int compare_failed = 0;
822
823 if (in_check_mask)
824 compare_failed = buf_cmp_mask(captured, in_check_value, in_check_mask, num_bits);
825 else
826 compare_failed = buf_cmp(captured, in_check_value, num_bits);
827
828 if (compare_failed){
829 /* An error handler could have caught the failing check
830 * only report a problem when there wasn't a handler, or if the handler
831 * acknowledged the error
832 */
833 /*
834 LOG_WARNING("TAP %s:",
835 jtag_tap_name(field->tap));
836 */
837 if (compare_failed)
838 {
839 char *captured_char = buf_to_str(captured, (num_bits > DEBUG_JTAG_IOZ) ? DEBUG_JTAG_IOZ : num_bits, 16);
840 char *in_check_value_char = buf_to_str(in_check_value, (num_bits > DEBUG_JTAG_IOZ) ? DEBUG_JTAG_IOZ : num_bits, 16);
841
842 if (in_check_mask)
843 {
844 char *in_check_mask_char;
845 in_check_mask_char = buf_to_str(in_check_mask, (num_bits > DEBUG_JTAG_IOZ) ? DEBUG_JTAG_IOZ : num_bits, 16);
846 LOG_WARNING("value captured during scan didn't pass the requested check:");
847 LOG_WARNING("captured: 0x%s check_value: 0x%s check_mask: 0x%s",
848 captured_char, in_check_value_char, in_check_mask_char);
849 free(in_check_mask_char);
850 }
851 else
852 {
853 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);
854 }
855
856 free(captured_char);
857 free(in_check_value_char);
858
859 retval = ERROR_JTAG_QUEUE_FAILED;
860 }
861
862 }
863 return retval;
864 }
865
866 void jtag_check_value_mask(scan_field_t *field, u8 *value, u8 *mask)
867 {
868 assert(field->in_value != NULL);
869
870 if (value==NULL)
871 {
872 /* no checking to do */
873 return;
874 }
875
876 jtag_execute_queue_noclear();
877
878 int retval=jtag_check_value_inner(field->in_value, value, mask, field->num_bits);
879 jtag_set_error(retval);
880 }
881
882
883
884 int default_interface_jtag_execute_queue(void)
885 {
886 if (NULL == jtag)
887 {
888 LOG_ERROR("No JTAG interface configured yet. "
889 "Issue 'init' command in startup scripts "
890 "before communicating with targets.");
891 return ERROR_FAIL;
892 }
893
894 return jtag->execute_queue();
895 }
896
897 void jtag_execute_queue_noclear(void)
898 {
899 jtag_flush_queue_count++;
900 jtag_set_error(interface_jtag_execute_queue());
901 }
902
903 int jtag_get_flush_queue_count(void)
904 {
905 return jtag_flush_queue_count;
906 }
907
908 int jtag_execute_queue(void)
909 {
910 jtag_execute_queue_noclear();
911 return jtag_error_clear();
912 }
913
914 static int jtag_reset_callback(enum jtag_event event, void *priv)
915 {
916 jtag_tap_t *tap = priv;
917
918 LOG_DEBUG("-");
919
920 if (event == JTAG_TRST_ASSERTED)
921 {
922 buf_set_ones(tap->cur_instr, tap->ir_length);
923 tap->bypass = 1;
924 }
925
926 return ERROR_OK;
927 }
928
929 void jtag_sleep(u32 us)
930 {
931 alive_sleep(us/1000);
932 }
933
934 /// maximum number of JTAG devices expected in the chain
935 #define JTAG_MAX_CHAIN_SIZE 20
936
937 #define EXTRACT_MFG(X) (((X) & 0xffe) >> 1)
938 #define EXTRACT_PART(X) (((X) & 0xffff000) >> 12)
939 #define EXTRACT_VER(X) (((X) & 0xf0000000) >> 28)
940
941 static int jtag_examine_chain_execute(u8 *idcode_buffer, unsigned num_idcode)
942 {
943 scan_field_t field = {
944 .tap = NULL,
945 .num_bits = num_idcode * 32,
946 .out_value = idcode_buffer,
947 .in_value = idcode_buffer,
948 };
949
950 // initialize to the end of chain ID value
951 for (unsigned i = 0; i < JTAG_MAX_CHAIN_SIZE; i++)
952 buf_set_u32(idcode_buffer, i * 32, 32, 0x000000FF);
953
954 jtag_add_plain_dr_scan(1, &field, TAP_RESET);
955 return jtag_execute_queue();
956 }
957
958 static bool jtag_examine_chain_check(u8 *idcodes, unsigned count)
959 {
960 u8 zero_check = 0x0;
961 u8 one_check = 0xff;
962
963 for (unsigned i = 0; i < count * 4; i++)
964 {
965 zero_check |= idcodes[i];
966 one_check &= idcodes[i];
967 }
968
969 /* if there wasn't a single non-zero bit or if all bits were one,
970 * the scan is not valid */
971 if (zero_check == 0x00 || one_check == 0xff)
972 {
973 LOG_ERROR("JTAG communication failure: check connection, "
974 "JTAG interface, target power etc.");
975 return false;
976 }
977 return true;
978 }
979
980 static void jtag_examine_chain_display(enum log_levels level, const char *msg,
981 const char *name, u32 idcode)
982 {
983 log_printf_lf(level, __FILE__, __LINE__, __FUNCTION__,
984 "JTAG tap: %s %16.16s: 0x%08x "
985 "(mfg: 0x%3.3x, part: 0x%4.4x, ver: 0x%1.1x)",
986 name, msg, idcode,
987 EXTRACT_MFG(idcode), EXTRACT_PART(idcode), EXTRACT_VER(idcode) );
988 }
989
990 static bool jtag_idcode_is_final(u32 idcode)
991 {
992 return idcode == 0x000000FF || idcode == 0xFFFFFFFF;
993 }
994
995 /**
996 * This helper checks that remaining bits in the examined chain data are
997 * all as expected, but a single JTAG device requires only 64 bits to be
998 * read back correctly. This can help identify and diagnose problems
999 * with the JTAG chain earlier, gives more helpful/explicit error messages.
1000 */
1001 static void jtag_examine_chain_end(u8 *idcodes, unsigned count, unsigned max)
1002 {
1003 bool triggered = false;
1004 for ( ; count < max - 31; count += 32)
1005 {
1006 u32 idcode = buf_get_u32(idcodes, count, 32);
1007 // do not trigger the warning if the data looks good
1008 if (!triggered && jtag_idcode_is_final(idcode))
1009 continue;
1010 LOG_WARNING("Unexpected idcode after end of chain: %d 0x%08x",
1011 count, idcode);
1012 triggered = true;
1013 }
1014 }
1015
1016 static bool jtag_examine_chain_match_tap(const struct jtag_tap_s *tap)
1017 {
1018 if (0 == tap->expected_ids_cnt)
1019 {
1020 /// @todo Enable LOG_INFO to ask for reports about unknown TAP IDs.
1021 #if 0
1022 LOG_INFO("Uknown JTAG TAP ID: 0x%08x", tap->idcode)
1023 LOG_INFO("Please report the chip name and reported ID code to the openocd project");
1024 #endif
1025 return true;
1026 }
1027
1028 /* Loop over the expected identification codes and test for a match */
1029 u8 ii;
1030 for (ii = 0; ii < tap->expected_ids_cnt; ii++)
1031 {
1032 if (tap->idcode == tap->expected_ids[ii])
1033 break;
1034 }
1035
1036 /* If none of the expected ids matched, log an error */
1037 if (ii != tap->expected_ids_cnt)
1038 {
1039 LOG_INFO("JTAG Tap/device matched");
1040 return true;
1041 }
1042 jtag_examine_chain_display(LOG_LVL_ERROR, "got",
1043 tap->dotted_name, tap->idcode);
1044 for (ii = 0; ii < tap->expected_ids_cnt; ii++)
1045 {
1046 char msg[32];
1047 snprintf(msg, sizeof(msg), "expected %hhu of %hhu",
1048 ii + 1, tap->expected_ids_cnt);
1049 jtag_examine_chain_display(LOG_LVL_ERROR, msg,
1050 tap->dotted_name, tap->expected_ids[ii]);
1051 }
1052 return false;
1053 }
1054
1055 /* Try to examine chain layout according to IEEE 1149.1 §12
1056 */
1057 static int jtag_examine_chain(void)
1058 {
1059 u8 idcode_buffer[JTAG_MAX_CHAIN_SIZE * 4];
1060 unsigned device_count = 0;
1061
1062 jtag_examine_chain_execute(idcode_buffer, JTAG_MAX_CHAIN_SIZE);
1063
1064 if (!jtag_examine_chain_check(idcode_buffer, JTAG_MAX_CHAIN_SIZE))
1065 return ERROR_JTAG_INIT_FAILED;
1066
1067 /* point at the 1st tap */
1068 jtag_tap_t *tap = jtag_tap_next_enabled(NULL);
1069 if (tap == NULL)
1070 {
1071 LOG_ERROR("JTAG: No taps enabled?");
1072 return ERROR_JTAG_INIT_FAILED;
1073 }
1074
1075 for (unsigned bit_count = 0; bit_count < (JTAG_MAX_CHAIN_SIZE * 32) - 31;)
1076 {
1077 u32 idcode = buf_get_u32(idcode_buffer, bit_count, 32);
1078 if ((idcode & 1) == 0)
1079 {
1080 /* LSB must not be 0, this indicates a device in bypass */
1081 LOG_WARNING("Tap/Device does not have IDCODE");
1082 idcode = 0;
1083
1084 bit_count += 1;
1085 }
1086 else
1087 {
1088 /*
1089 * End of chain (invalid manufacturer ID) some devices, such
1090 * as AVR will output all 1's instead of TDI input value at
1091 * end of chain.
1092 */
1093 if (jtag_idcode_is_final(idcode))
1094 {
1095 jtag_examine_chain_end(idcode_buffer,
1096 bit_count + 32, JTAG_MAX_CHAIN_SIZE * 32);
1097 break;
1098 }
1099
1100 jtag_examine_chain_display(LOG_LVL_INFO, "tap/device found",
1101 tap ? tap->dotted_name : "(not-named)",
1102 idcode);
1103
1104 bit_count += 32;
1105 }
1106 device_count++;
1107 if (!tap)
1108 continue;
1109
1110 tap->idcode = idcode;
1111
1112 // ensure the TAP ID does matches what was expected
1113 if (!jtag_examine_chain_match_tap(tap))
1114 return ERROR_JTAG_INIT_FAILED;
1115
1116 tap = jtag_tap_next_enabled(tap);
1117 }
1118
1119 /* see if number of discovered devices matches configuration */
1120 if (device_count != jtag_tap_count_enabled())
1121 {
1122 LOG_ERROR("number of discovered devices in JTAG chain (%i) "
1123 "does not match (enabled) configuration (%i), total taps: %d",
1124 device_count, jtag_tap_count_enabled(), jtag_tap_count());
1125 LOG_ERROR("check the config file and ensure proper JTAG communication"
1126 " (connections, speed, ...)");
1127 return ERROR_JTAG_INIT_FAILED;
1128 }
1129
1130 return ERROR_OK;
1131 }
1132
1133 static int jtag_validate_chain(void)
1134 {
1135 jtag_tap_t *tap;
1136 int total_ir_length = 0;
1137 u8 *ir_test = NULL;
1138 scan_field_t field;
1139 int chain_pos = 0;
1140
1141 tap = NULL;
1142 total_ir_length = 0;
1143 for(;;){
1144 tap = jtag_tap_next_enabled(tap);
1145 if( tap == NULL ){
1146 break;
1147 }
1148 total_ir_length += tap->ir_length;
1149 }
1150
1151 total_ir_length += 2;
1152 ir_test = malloc(CEIL(total_ir_length, 8));
1153 buf_set_ones(ir_test, total_ir_length);
1154
1155 field.tap = NULL;
1156 field.num_bits = total_ir_length;
1157 field.out_value = ir_test;
1158 field.in_value = ir_test;
1159
1160
1161 jtag_add_plain_ir_scan(1, &field, TAP_RESET);
1162 jtag_execute_queue();
1163
1164 tap = NULL;
1165 chain_pos = 0;
1166 int val;
1167 for(;;){
1168 tap = jtag_tap_next_enabled(tap);
1169 if( tap == NULL ){
1170 break;
1171 }
1172
1173 val = buf_get_u32(ir_test, chain_pos, 2);
1174 if (val != 0x1)
1175 {
1176 char *cbuf = buf_to_str(ir_test, total_ir_length, 16);
1177 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);
1178 free(cbuf);
1179 free(ir_test);
1180 return ERROR_JTAG_INIT_FAILED;
1181 }
1182 chain_pos += tap->ir_length;
1183 }
1184
1185 val = buf_get_u32(ir_test, chain_pos, 2);
1186 if (val != 0x3)
1187 {
1188 char *cbuf = buf_to_str(ir_test, total_ir_length, 16);
1189 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);
1190 free(cbuf);
1191 free(ir_test);
1192 return ERROR_JTAG_INIT_FAILED;
1193 }
1194
1195 free(ir_test);
1196
1197 return ERROR_OK;
1198 }
1199
1200 enum jtag_tap_cfg_param {
1201 JCFG_EVENT
1202 };
1203
1204 static Jim_Nvp nvp_config_opts[] = {
1205 { .name = "-event", .value = JCFG_EVENT },
1206
1207 { .name = NULL, .value = -1 }
1208 };
1209
1210 static int jtag_tap_configure_cmd( Jim_GetOptInfo *goi, jtag_tap_t * tap)
1211 {
1212 Jim_Nvp *n;
1213 Jim_Obj *o;
1214 int e;
1215
1216 /* parse config or cget options */
1217 while (goi->argc > 0) {
1218 Jim_SetEmptyResult (goi->interp);
1219
1220 e = Jim_GetOpt_Nvp(goi, nvp_config_opts, &n);
1221 if (e != JIM_OK) {
1222 Jim_GetOpt_NvpUnknown(goi, nvp_config_opts, 0);
1223 return e;
1224 }
1225
1226 switch (n->value) {
1227 case JCFG_EVENT:
1228 if (goi->argc == 0) {
1229 Jim_WrongNumArgs( goi->interp, goi->argc, goi->argv, "-event ?event-name? ..." );
1230 return JIM_ERR;
1231 }
1232
1233 e = Jim_GetOpt_Nvp( goi, nvp_jtag_tap_event, &n );
1234 if (e != JIM_OK) {
1235 Jim_GetOpt_NvpUnknown(goi, nvp_jtag_tap_event, 1);
1236 return e;
1237 }
1238
1239 if (goi->isconfigure) {
1240 if (goi->argc != 1) {
1241 Jim_WrongNumArgs(goi->interp, goi->argc, goi->argv, "-event ?event-name? ?EVENT-BODY?");
1242 return JIM_ERR;
1243 }
1244 } else {
1245 if (goi->argc != 0) {
1246 Jim_WrongNumArgs(goi->interp, goi->argc, goi->argv, "-event ?event-name?");
1247 return JIM_ERR;
1248 }
1249 }
1250
1251 {
1252 jtag_tap_event_action_t *jteap;
1253
1254 jteap = tap->event_action;
1255 /* replace existing? */
1256 while (jteap) {
1257 if (jteap->event == (enum jtag_tap_event)n->value) {
1258 break;
1259 }
1260 jteap = jteap->next;
1261 }
1262
1263 if (goi->isconfigure) {
1264 if (jteap == NULL) {
1265 /* create new */
1266 jteap = calloc(1, sizeof (*jteap));
1267 }
1268 jteap->event = n->value;
1269 Jim_GetOpt_Obj( goi, &o);
1270 if (jteap->body) {
1271 Jim_DecrRefCount(interp, jteap->body);
1272 }
1273 jteap->body = Jim_DuplicateObj(goi->interp, o);
1274 Jim_IncrRefCount(jteap->body);
1275
1276 /* add to head of event list */
1277 jteap->next = tap->event_action;
1278 tap->event_action = jteap;
1279 Jim_SetEmptyResult(goi->interp);
1280 } else {
1281 /* get */
1282 if (jteap == NULL) {
1283 Jim_SetEmptyResult(goi->interp);
1284 } else {
1285 Jim_SetResult(goi->interp, Jim_DuplicateObj(goi->interp, jteap->body));
1286 }
1287 }
1288 }
1289 /* loop for more */
1290 break;
1291 }
1292 } /* while (goi->argc) */
1293
1294 return JIM_OK;
1295 }
1296
1297
1298 static void jtag_tap_init(jtag_tap_t *tap)
1299 {
1300 assert(0 != tap->ir_length);
1301
1302 tap->expected = malloc(tap->ir_length);
1303 tap->expected_mask = malloc(tap->ir_length);
1304 tap->cur_instr = malloc(tap->ir_length);
1305
1306 buf_set_u32(tap->expected, 0, tap->ir_length, tap->ir_capture_value);
1307 buf_set_u32(tap->expected_mask, 0, tap->ir_length, tap->ir_capture_mask);
1308 buf_set_ones(tap->cur_instr, tap->ir_length);
1309
1310 // place TAP in bypass mode
1311 tap->bypass = 1;
1312 // register the reset callback for the TAP
1313 jtag_register_event_callback(&jtag_reset_callback, tap);
1314
1315 LOG_DEBUG("Created Tap: %s @ abs position %d, "
1316 "irlen %d, capture: 0x%x mask: 0x%x", tap->dotted_name,
1317 tap->abs_chain_position, tap->ir_length,
1318 tap->ir_capture_value, tap->ir_capture_mask);
1319 jtag_tap_add(tap);
1320 }
1321
1322 static void jtag_tap_free(jtag_tap_t *tap)
1323 {
1324 /// @todo is anything missing? no memory leaks please
1325 free((void *)tap->expected_ids);
1326 free((void *)tap->chip);
1327 free((void *)tap->tapname);
1328 free((void *)tap->dotted_name);
1329 free(tap);
1330 }
1331
1332 static int jim_newtap_cmd( Jim_GetOptInfo *goi )
1333 {
1334 jtag_tap_t *pTap;
1335 jim_wide w;
1336 int x;
1337 int e;
1338 int reqbits;
1339 Jim_Nvp *n;
1340 char *cp;
1341 const Jim_Nvp opts[] = {
1342 #define NTAP_OPT_IRLEN 0
1343 { .name = "-irlen" , .value = NTAP_OPT_IRLEN },
1344 #define NTAP_OPT_IRMASK 1
1345 { .name = "-irmask" , .value = NTAP_OPT_IRMASK },
1346 #define NTAP_OPT_IRCAPTURE 2
1347 { .name = "-ircapture" , .value = NTAP_OPT_IRCAPTURE },
1348 #define NTAP_OPT_ENABLED 3
1349 { .name = "-enable" , .value = NTAP_OPT_ENABLED },
1350 #define NTAP_OPT_DISABLED 4
1351 { .name = "-disable" , .value = NTAP_OPT_DISABLED },
1352 #define NTAP_OPT_EXPECTED_ID 5
1353 { .name = "-expected-id" , .value = NTAP_OPT_EXPECTED_ID },
1354 { .name = NULL , .value = -1 },
1355 };
1356
1357 pTap = malloc( sizeof(jtag_tap_t) );
1358 memset( pTap, 0, sizeof(*pTap) );
1359 if( !pTap ){
1360 Jim_SetResult_sprintf( goi->interp, "no memory");
1361 return JIM_ERR;
1362 }
1363 /*
1364 * we expect CHIP + TAP + OPTIONS
1365 * */
1366 if( goi->argc < 3 ){
1367 Jim_SetResult_sprintf(goi->interp, "Missing CHIP TAP OPTIONS ....");
1368 return JIM_ERR;
1369 }
1370 Jim_GetOpt_String( goi, &cp, NULL );
1371 pTap->chip = strdup(cp);
1372
1373 Jim_GetOpt_String( goi, &cp, NULL );
1374 pTap->tapname = strdup(cp);
1375
1376 /* name + dot + name + null */
1377 x = strlen(pTap->chip) + 1 + strlen(pTap->tapname) + 1;
1378 cp = malloc( x );
1379 sprintf( cp, "%s.%s", pTap->chip, pTap->tapname );
1380 pTap->dotted_name = cp;
1381
1382 LOG_DEBUG("Creating New Tap, Chip: %s, Tap: %s, Dotted: %s, %d params",
1383 pTap->chip, pTap->tapname, pTap->dotted_name, goi->argc);
1384
1385 /* default is enabled */
1386 pTap->enabled = 1;
1387
1388 /* deal with options */
1389 #define NTREQ_IRLEN 1
1390 #define NTREQ_IRCAPTURE 2
1391 #define NTREQ_IRMASK 4
1392
1393 /* clear them as we find them */
1394 reqbits = (NTREQ_IRLEN | NTREQ_IRCAPTURE | NTREQ_IRMASK);
1395
1396 while( goi->argc ){
1397 e = Jim_GetOpt_Nvp( goi, opts, &n );
1398 if( e != JIM_OK ){
1399 Jim_GetOpt_NvpUnknown( goi, opts, 0 );
1400 return e;
1401 }
1402 LOG_DEBUG("Processing option: %s", n->name );
1403 switch( n->value ){
1404 case NTAP_OPT_ENABLED:
1405 pTap->enabled = 1;
1406 break;
1407 case NTAP_OPT_DISABLED:
1408 pTap->enabled = 0;
1409 break;
1410 case NTAP_OPT_EXPECTED_ID:
1411 {
1412 u32 *new_expected_ids;
1413
1414 e = Jim_GetOpt_Wide( goi, &w );
1415 if( e != JIM_OK) {
1416 Jim_SetResult_sprintf(goi->interp, "option: %s bad parameter", n->name);
1417 return e;
1418 }
1419
1420 new_expected_ids = malloc(sizeof(u32) * (pTap->expected_ids_cnt + 1));
1421 if (new_expected_ids == NULL) {
1422 Jim_SetResult_sprintf( goi->interp, "no memory");
1423 return JIM_ERR;
1424 }
1425
1426 memcpy(new_expected_ids, pTap->expected_ids, sizeof(u32) * pTap->expected_ids_cnt);
1427
1428 new_expected_ids[pTap->expected_ids_cnt] = w;
1429
1430 free(pTap->expected_ids);
1431 pTap->expected_ids = new_expected_ids;
1432 pTap->expected_ids_cnt++;
1433 break;
1434 }
1435 case NTAP_OPT_IRLEN:
1436 case NTAP_OPT_IRMASK:
1437 case NTAP_OPT_IRCAPTURE:
1438 e = Jim_GetOpt_Wide( goi, &w );
1439 if( e != JIM_OK ){
1440 Jim_SetResult_sprintf( goi->interp, "option: %s bad parameter", n->name );
1441 return e;
1442 }
1443 if( (w < 0) || (w > 0xffff) ){
1444 /* wacky value */
1445 Jim_SetResult_sprintf( goi->interp, "option: %s - wacky value: %d (0x%x)",
1446 n->name, (int)(w), (int)(w));
1447 return JIM_ERR;
1448 }
1449 switch(n->value){
1450 case NTAP_OPT_IRLEN:
1451 pTap->ir_length = w;
1452 reqbits &= (~(NTREQ_IRLEN));
1453 break;
1454 case NTAP_OPT_IRMASK:
1455 pTap->ir_capture_mask = w;
1456 reqbits &= (~(NTREQ_IRMASK));
1457 break;
1458 case NTAP_OPT_IRCAPTURE:
1459 pTap->ir_capture_value = w;
1460 reqbits &= (~(NTREQ_IRCAPTURE));
1461 break;
1462 }
1463 } /* switch(n->value) */
1464 } /* while( goi->argc ) */
1465
1466 /* Did all the required option bits get cleared? */
1467 if (0 == reqbits)
1468 {
1469 jtag_tap_init(pTap);
1470 return ERROR_OK;
1471 }
1472
1473 Jim_SetResult_sprintf(goi->interp,
1474 "newtap: %s missing required parameters",
1475 pTap->dotted_name);
1476 jtag_tap_free(pTap);
1477 return JIM_ERR;
1478 }
1479
1480 static int jim_jtag_command( Jim_Interp *interp, int argc, Jim_Obj *const *argv )
1481 {
1482 Jim_GetOptInfo goi;
1483 int e;
1484 Jim_Nvp *n;
1485 Jim_Obj *o;
1486 struct command_context_s *context;
1487
1488 enum {
1489 JTAG_CMD_INTERFACE,
1490 JTAG_CMD_INIT_RESET,
1491 JTAG_CMD_NEWTAP,
1492 JTAG_CMD_TAPENABLE,
1493 JTAG_CMD_TAPDISABLE,
1494 JTAG_CMD_TAPISENABLED,
1495 JTAG_CMD_CONFIGURE,
1496 JTAG_CMD_CGET
1497 };
1498
1499 const Jim_Nvp jtag_cmds[] = {
1500 { .name = "interface" , .value = JTAG_CMD_INTERFACE },
1501 { .name = "arp_init-reset", .value = JTAG_CMD_INIT_RESET },
1502 { .name = "newtap" , .value = JTAG_CMD_NEWTAP },
1503 { .name = "tapisenabled" , .value = JTAG_CMD_TAPISENABLED },
1504 { .name = "tapenable" , .value = JTAG_CMD_TAPENABLE },
1505 { .name = "tapdisable" , .value = JTAG_CMD_TAPDISABLE },
1506 { .name = "configure" , .value = JTAG_CMD_CONFIGURE },
1507 { .name = "cget" , .value = JTAG_CMD_CGET },
1508
1509 { .name = NULL, .value = -1 },
1510 };
1511
1512 context = Jim_GetAssocData(interp, "context");
1513 /* go past the command */
1514 Jim_GetOpt_Setup( &goi, interp, argc-1, argv+1 );
1515
1516 e = Jim_GetOpt_Nvp( &goi, jtag_cmds, &n );
1517 if( e != JIM_OK ){
1518 Jim_GetOpt_NvpUnknown( &goi, jtag_cmds, 0 );
1519 return e;
1520 }
1521 Jim_SetEmptyResult( goi.interp );
1522 switch( n->value ){
1523 case JTAG_CMD_INTERFACE:
1524 /* return the name of the interface */
1525 /* TCL code might need to know the exact type... */
1526 /* FUTURE: we allow this as a means to "set" the interface. */
1527 if( goi.argc != 0 ){
1528 Jim_WrongNumArgs( goi.interp, 1, goi.argv-1, "(no params)");
1529 return JIM_ERR;
1530 }
1531 Jim_SetResultString( goi.interp, jtag_interface->name, -1 );
1532 return JIM_OK;
1533 case JTAG_CMD_INIT_RESET:
1534 if( goi.argc != 0 ){
1535 Jim_WrongNumArgs( goi.interp, 1, goi.argv-1, "(no params)");
1536 return JIM_ERR;
1537 }
1538 e = jtag_init_reset(context);
1539 if( e != ERROR_OK ){
1540 Jim_SetResult_sprintf( goi.interp, "error: %d", e);
1541 return JIM_ERR;
1542 }
1543 return JIM_OK;
1544 case JTAG_CMD_NEWTAP:
1545 return jim_newtap_cmd( &goi );
1546 break;
1547 case JTAG_CMD_TAPISENABLED:
1548 case JTAG_CMD_TAPENABLE:
1549 case JTAG_CMD_TAPDISABLE:
1550 if( goi.argc != 1 ){
1551 Jim_SetResultString( goi.interp, "Too many parameters",-1 );
1552 return JIM_ERR;
1553 }
1554
1555 {
1556 jtag_tap_t *t;
1557 t = jtag_tap_by_jim_obj( goi.interp, goi.argv[0] );
1558 if( t == NULL ){
1559 return JIM_ERR;
1560 }
1561 switch( n->value ){
1562 case JTAG_CMD_TAPISENABLED:
1563 e = t->enabled;
1564 break;
1565 case JTAG_CMD_TAPENABLE:
1566 jtag_tap_handle_event( t, JTAG_TAP_EVENT_ENABLE);
1567 e = 1;
1568 t->enabled = e;
1569 break;
1570 case JTAG_CMD_TAPDISABLE:
1571 jtag_tap_handle_event( t, JTAG_TAP_EVENT_DISABLE);
1572 e = 0;
1573 t->enabled = e;
1574 break;
1575 }
1576 Jim_SetResult( goi.interp, Jim_NewIntObj( goi.interp, e ) );
1577 return JIM_OK;
1578 }
1579 break;
1580
1581 case JTAG_CMD_CGET:
1582 if( goi.argc < 2 ){
1583 Jim_WrongNumArgs( goi.interp, 0, NULL, "?tap-name? -option ...");
1584 return JIM_ERR;
1585 }
1586
1587 {
1588 jtag_tap_t *t;
1589
1590 Jim_GetOpt_Obj(&goi, &o);
1591 t = jtag_tap_by_jim_obj( goi.interp, o );
1592 if( t == NULL ){
1593 return JIM_ERR;
1594 }
1595
1596 goi.isconfigure = 0;
1597 return jtag_tap_configure_cmd( &goi, t);
1598 }
1599 break;
1600
1601 case JTAG_CMD_CONFIGURE:
1602 if( goi.argc < 3 ){
1603 Jim_WrongNumArgs( goi.interp, 0, NULL, "?tap-name? -option ?VALUE? ...");
1604 return JIM_ERR;
1605 }
1606
1607 {
1608 jtag_tap_t *t;
1609
1610 Jim_GetOpt_Obj(&goi, &o);
1611 t = jtag_tap_by_jim_obj( goi.interp, o );
1612 if( t == NULL ){
1613 return JIM_ERR;
1614 }
1615
1616 goi.isconfigure = 1;
1617 return jtag_tap_configure_cmd( &goi, t);
1618 }
1619 }
1620
1621 return JIM_ERR;
1622 }
1623
1624 int jtag_register_commands(struct command_context_s *cmd_ctx)
1625 {
1626 register_jim( cmd_ctx, "jtag", jim_jtag_command, "perform jtag tap actions");
1627
1628 register_command(cmd_ctx, NULL, "interface", handle_interface_command,
1629 COMMAND_CONFIG, "try to configure interface");
1630 register_command(cmd_ctx, NULL, "jtag_speed", handle_jtag_speed_command,
1631 COMMAND_ANY, "(DEPRECATED) set jtag speed (if supported)");
1632 register_command(cmd_ctx, NULL, "jtag_khz", handle_jtag_khz_command,
1633 COMMAND_ANY, "set maximum jtag speed (if supported); "
1634 "parameter is maximum khz, or 0 for adaptive clocking (RTCK).");
1635 register_command(cmd_ctx, NULL, "jtag_device", handle_jtag_device_command,
1636 COMMAND_CONFIG, "(DEPRECATED) jtag_device <ir_length> <ir_expected> <ir_mask>");
1637 register_command(cmd_ctx, NULL, "reset_config", handle_reset_config_command,
1638 COMMAND_ANY,
1639 "[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]");
1640 register_command(cmd_ctx, NULL, "jtag_nsrst_delay", handle_jtag_nsrst_delay_command,
1641 COMMAND_ANY, "jtag_nsrst_delay <ms> - delay after deasserting srst in ms");
1642 register_command(cmd_ctx, NULL, "jtag_ntrst_delay", handle_jtag_ntrst_delay_command,
1643 COMMAND_ANY, "jtag_ntrst_delay <ms> - delay after deasserting trst in ms");
1644
1645 register_command(cmd_ctx, NULL, "scan_chain", handle_scan_chain_command,
1646 COMMAND_EXEC, "print current scan chain configuration");
1647
1648 register_command(cmd_ctx, NULL, "jtag_reset", handle_jtag_reset_command,
1649 COMMAND_EXEC, "toggle reset lines <trst> <srst>");
1650 register_command(cmd_ctx, NULL, "runtest", handle_runtest_command,
1651 COMMAND_EXEC, "move to Run-Test/Idle, and execute <num_cycles>");
1652 register_command(cmd_ctx, NULL, "irscan", handle_irscan_command,
1653 COMMAND_EXEC, "execute IR scan <device> <instr> [dev2] [instr2] ...");
1654 register_jim(cmd_ctx, "drscan", Jim_Command_drscan, "execute DR scan <device> <num_bits> <value> <num_bits1> <value2> ...");
1655 register_jim(cmd_ctx, "flush_count", Jim_Command_flush_count, "returns number of times the JTAG queue has been flushed");
1656
1657 register_command(cmd_ctx, NULL, "verify_ircapture", handle_verify_ircapture_command,
1658 COMMAND_ANY, "verify value captured during Capture-IR <enable|disable>");
1659 register_command(cmd_ctx, NULL, "verify_jtag", handle_verify_jtag_command,
1660 COMMAND_ANY, "verify value capture <enable|disable>");
1661 register_command(cmd_ctx, NULL, "tms_sequence", handle_tms_sequence_command,
1662 COMMAND_ANY, "choose short(default) or long tms_sequence <short|long>");
1663 return ERROR_OK;
1664 }
1665
1666 int jtag_interface_init(struct command_context_s *cmd_ctx)
1667 {
1668 if (jtag)
1669 return ERROR_OK;
1670
1671 if (!jtag_interface)
1672 {
1673 /* nothing was previously specified by "interface" command */
1674 LOG_ERROR("JTAG interface has to be specified, see \"interface\" command");
1675 return ERROR_JTAG_INVALID_INTERFACE;
1676 }
1677 if(hasKHz)
1678 {
1679 jtag_interface->khz(jtag_get_speed_khz(), &jtag_speed);
1680 hasKHz = false;
1681 }
1682
1683 if (jtag_interface->init() != ERROR_OK)
1684 return ERROR_JTAG_INIT_FAILED;
1685
1686 jtag = jtag_interface;
1687 return ERROR_OK;
1688 }
1689
1690 static int jtag_init_inner(struct command_context_s *cmd_ctx)
1691 {
1692 jtag_tap_t *tap;
1693 int retval;
1694
1695 LOG_DEBUG("Init JTAG chain");
1696
1697 tap = jtag_tap_next_enabled(NULL);
1698 if( tap == NULL ){
1699 LOG_ERROR("There are no enabled taps?");
1700 return ERROR_JTAG_INIT_FAILED;
1701 }
1702
1703 jtag_add_tlr();
1704 if ((retval=jtag_execute_queue())!=ERROR_OK)
1705 return retval;
1706
1707 /* examine chain first, as this could discover the real chain layout */
1708 if (jtag_examine_chain() != ERROR_OK)
1709 {
1710 LOG_ERROR("trying to validate configured JTAG chain anyway...");
1711 }
1712
1713 if (jtag_validate_chain() != ERROR_OK)
1714 {
1715 LOG_WARNING("Could not validate JTAG chain, continuing anyway...");
1716 }
1717
1718 return ERROR_OK;
1719 }
1720
1721 int jtag_interface_quit(void)
1722 {
1723 if (!jtag || !jtag->quit)
1724 return ERROR_OK;
1725
1726 // close the JTAG interface
1727 int result = jtag->quit();
1728 if (ERROR_OK != result)
1729 LOG_ERROR("failed: %d", result);
1730
1731 return ERROR_OK;
1732 }
1733
1734
1735 int jtag_init_reset(struct command_context_s *cmd_ctx)
1736 {
1737 int retval;
1738
1739 if ((retval=jtag_interface_init(cmd_ctx)) != ERROR_OK)
1740 return retval;
1741
1742 LOG_DEBUG("Trying to bring the JTAG controller to life by asserting TRST / RESET");
1743
1744 /* Reset can happen after a power cycle.
1745 *
1746 * Ideally we would only assert TRST or run RESET before the target reset.
1747 *
1748 * However w/srst_pulls_trst, trst is asserted together with the target
1749 * reset whether we want it or not.
1750 *
1751 * NB! Some targets have JTAG circuitry disabled until a
1752 * trst & srst has been asserted.
1753 *
1754 * NB! here we assume nsrst/ntrst delay are sufficient!
1755 *
1756 * NB! order matters!!!! srst *can* disconnect JTAG circuitry
1757 *
1758 */
1759 jtag_add_reset(1, 0); /* RESET or TRST */
1760 if (jtag_reset_config & RESET_HAS_SRST)
1761 {
1762 jtag_add_reset(1, 1);
1763 if ((jtag_reset_config & RESET_SRST_PULLS_TRST)==0)
1764 jtag_add_reset(0, 1);
1765 }
1766 jtag_add_reset(0, 0);
1767 if ((retval = jtag_execute_queue()) != ERROR_OK)
1768 return retval;
1769
1770 /* Check that we can communication on the JTAG chain + eventually we want to
1771 * be able to perform enumeration only after OpenOCD has started
1772 * telnet and GDB server
1773 *
1774 * That would allow users to more easily perform any magic they need to before
1775 * reset happens.
1776 */
1777 return jtag_init_inner(cmd_ctx);
1778 }
1779
1780 int jtag_init(struct command_context_s *cmd_ctx)
1781 {
1782 int retval;
1783 if ((retval=jtag_interface_init(cmd_ctx)) != ERROR_OK)
1784 return retval;
1785 if (jtag_init_inner(cmd_ctx)==ERROR_OK)
1786 {
1787 return ERROR_OK;
1788 }
1789 return jtag_init_reset(cmd_ctx);
1790 }
1791
1792 void jtag_set_speed_khz(unsigned khz)
1793 {
1794 speed_khz = khz;
1795 }
1796 unsigned jtag_get_speed_khz(void)
1797 {
1798 return speed_khz;
1799 }
1800
1801 static int default_khz(int khz, int *jtag_speed)
1802 {
1803 LOG_ERROR("Translation from khz to jtag_speed not implemented");
1804 return ERROR_FAIL;
1805 }
1806
1807 static int default_speed_div(int speed, int *khz)
1808 {
1809 LOG_ERROR("Translation from jtag_speed to khz not implemented");
1810 return ERROR_FAIL;
1811 }
1812
1813 static int default_power_dropout(int *dropout)
1814 {
1815 *dropout=0; /* by default we can't detect power dropout */
1816 return ERROR_OK;
1817 }
1818
1819 static int default_srst_asserted(int *srst_asserted)
1820 {
1821 *srst_asserted=0; /* by default we can't detect srst asserted */
1822 return ERROR_OK;
1823 }
1824
1825 static int handle_interface_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1826 {
1827 int i;
1828 int retval;
1829
1830 /* check whether the interface is already configured */
1831 if (jtag_interface)
1832 {
1833 LOG_WARNING("Interface already configured, ignoring");
1834 return ERROR_OK;
1835 }
1836
1837 /* interface name is a mandatory argument */
1838 if (argc < 1 || args[0][0] == '\0')
1839 {
1840 return ERROR_COMMAND_SYNTAX_ERROR;
1841 }
1842
1843 for (i=0; jtag_interfaces[i]; i++)
1844 {
1845 if (strcmp(args[0], jtag_interfaces[i]->name) == 0)
1846 {
1847 if ((retval = jtag_interfaces[i]->register_commands(cmd_ctx)) != ERROR_OK)
1848 {
1849 return retval;
1850 }
1851
1852 jtag_interface = jtag_interfaces[i];
1853
1854 if (jtag_interface->khz == NULL)
1855 {
1856 jtag_interface->khz = default_khz;
1857 }
1858 if (jtag_interface->speed_div == NULL)
1859 {
1860 jtag_interface->speed_div = default_speed_div;
1861 }
1862 if (jtag_interface->power_dropout == NULL)
1863 {
1864 jtag_interface->power_dropout = default_power_dropout;
1865 }
1866 if (jtag_interface->srst_asserted == NULL)
1867 {
1868 jtag_interface->srst_asserted = default_srst_asserted;
1869 }
1870
1871 return ERROR_OK;
1872 }
1873 }
1874
1875 /* no valid interface was found (i.e. the configuration option,
1876 * didn't match one of the compiled-in interfaces
1877 */
1878 LOG_ERROR("No valid jtag interface found (%s)", args[0]);
1879 LOG_ERROR("compiled-in jtag interfaces:");
1880 for (i = 0; jtag_interfaces[i]; i++)
1881 {
1882 LOG_ERROR("%i: %s", i, jtag_interfaces[i]->name);
1883 }
1884
1885 return ERROR_JTAG_INVALID_INTERFACE;
1886 }
1887
1888 static int handle_jtag_device_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1889 {
1890 int e;
1891 char buf[1024];
1892 Jim_Obj *newargs[ 10 ];
1893 /*
1894 * CONVERT SYNTAX
1895 * argv[-1] = command
1896 * argv[ 0] = ir length
1897 * argv[ 1] = ir capture
1898 * argv[ 2] = ir mask
1899 * argv[ 3] = not actually used by anything but in the docs
1900 */
1901
1902 if( argc < 4 ){
1903 command_print( cmd_ctx, "OLD DEPRECATED SYNTAX: Please use the NEW syntax");
1904 return ERROR_OK;
1905 }
1906 command_print( cmd_ctx, "OLD SYNTAX: DEPRECATED - translating to new syntax");
1907 command_print( cmd_ctx, "jtag newtap CHIP TAP -irlen %s -ircapture %s -irvalue %s",
1908 args[0],
1909 args[1],
1910 args[2] );
1911 command_print( cmd_ctx, "Example: STM32 has 2 taps, the cortexM3(len4) + boundaryscan(len5)");
1912 command_print( cmd_ctx, "jtag newtap stm32 cortexm3 ....., thus creating the tap: \"stm32.cortexm3\"");
1913 command_print( cmd_ctx, "jtag newtap stm32 boundary ....., and the tap: \"stm32.boundary\"");
1914 command_print( cmd_ctx, "And then refer to the taps by the dotted name.");
1915
1916 newargs[0] = Jim_NewStringObj( interp, "jtag", -1 );
1917 newargs[1] = Jim_NewStringObj( interp, "newtap", -1 );
1918 sprintf( buf, "chip%d", jtag_tap_count() );
1919 newargs[2] = Jim_NewStringObj( interp, buf, -1 );
1920 sprintf( buf, "tap%d", jtag_tap_count() );
1921 newargs[3] = Jim_NewStringObj( interp, buf, -1 );
1922 newargs[4] = Jim_NewStringObj( interp, "-irlen", -1 );
1923 newargs[5] = Jim_NewStringObj( interp, args[0], -1 );
1924 newargs[6] = Jim_NewStringObj( interp, "-ircapture", -1 );
1925 newargs[7] = Jim_NewStringObj( interp, args[1], -1 );
1926 newargs[8] = Jim_NewStringObj( interp, "-irmask", -1 );
1927 newargs[9] = Jim_NewStringObj( interp, args[2], -1 );
1928
1929 command_print( cmd_ctx, "NEW COMMAND:");
1930 sprintf( buf, "%s %s %s %s %s %s %s %s %s %s",
1931 Jim_GetString( newargs[0], NULL ),
1932 Jim_GetString( newargs[1], NULL ),
1933 Jim_GetString( newargs[2], NULL ),
1934 Jim_GetString( newargs[3], NULL ),
1935 Jim_GetString( newargs[4], NULL ),
1936 Jim_GetString( newargs[5], NULL ),
1937 Jim_GetString( newargs[6], NULL ),
1938 Jim_GetString( newargs[7], NULL ),
1939 Jim_GetString( newargs[8], NULL ),
1940 Jim_GetString( newargs[9], NULL ) );
1941
1942 e = jim_jtag_command( interp, 10, newargs );
1943 if( e != JIM_OK ){
1944 command_print( cmd_ctx, "%s", Jim_GetString( Jim_GetResult(interp), NULL ) );
1945 }
1946 return e;
1947 }
1948
1949 static int handle_scan_chain_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1950 {
1951 jtag_tap_t *tap;
1952
1953 tap = jtag_all_taps();
1954 command_print(cmd_ctx, " TapName | Enabled | IdCode Expected IrLen IrCap IrMask Instr ");
1955 command_print(cmd_ctx, "---|--------------------|---------|------------|------------|------|------|------|---------");
1956
1957 while( tap ){
1958 u32 expected, expected_mask, cur_instr, ii;
1959 expected = buf_get_u32(tap->expected, 0, tap->ir_length);
1960 expected_mask = buf_get_u32(tap->expected_mask, 0, tap->ir_length);
1961 cur_instr = buf_get_u32(tap->cur_instr, 0, tap->ir_length);
1962
1963 command_print(cmd_ctx,
1964 "%2d | %-18s | %c | 0x%08x | 0x%08x | 0x%02x | 0x%02x | 0x%02x | 0x%02x",
1965 tap->abs_chain_position,
1966 tap->dotted_name,
1967 tap->enabled ? 'Y' : 'n',
1968 tap->idcode,
1969 (tap->expected_ids_cnt > 0 ? tap->expected_ids[0] : 0),
1970 tap->ir_length,
1971 expected,
1972 expected_mask,
1973 cur_instr);
1974
1975 for (ii = 1; ii < tap->expected_ids_cnt; ii++) {
1976 command_print(cmd_ctx, " | | | | 0x%08x | | | | ",
1977 tap->expected_ids[ii]);
1978 }
1979
1980 tap = tap->next_tap;
1981 }
1982
1983 return ERROR_OK;
1984 }
1985
1986 static int handle_reset_config_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1987 {
1988 int new_cfg = 0;
1989 int mask = 0;
1990
1991 if (argc < 1)
1992 return ERROR_COMMAND_SYNTAX_ERROR;
1993
1994 /* Original versions cared about the order of these tokens:
1995 * reset_config signals [combination [trst_type [srst_type]]]
1996 * They also clobbered the previous configuration even on error.
1997 *
1998 * Here we don't care about the order, and only change values
1999 * which have been explicitly specified.
2000 */
2001 for (; argc; argc--, args++) {
2002 int tmp = 0;
2003 int m;
2004
2005 /* signals */
2006 m = RESET_HAS_TRST | RESET_HAS_SRST;
2007 if (strcmp(*args, "none") == 0)
2008 tmp = RESET_NONE;
2009 else if (strcmp(*args, "trst_only") == 0)
2010 tmp = RESET_HAS_TRST;
2011 else if (strcmp(*args, "srst_only") == 0)
2012 tmp = RESET_HAS_SRST;
2013 else if (strcmp(*args, "trst_and_srst") == 0)
2014 tmp = RESET_HAS_TRST | RESET_HAS_SRST;
2015 else
2016 m = 0;
2017 if (mask & m) {
2018 LOG_ERROR("extra reset_config %s spec (%s)",
2019 "signal", *args);
2020 return ERROR_INVALID_ARGUMENTS;
2021 }
2022 if (m)
2023 goto next;
2024
2025 /* combination (options for broken wiring) */
2026 m = RESET_SRST_PULLS_TRST | RESET_TRST_PULLS_SRST;
2027 if (strcmp(*args, "separate") == 0)
2028 /* separate reset lines - default */;
2029 else if (strcmp(*args, "srst_pulls_trst") == 0)
2030 tmp |= RESET_SRST_PULLS_TRST;
2031 else if (strcmp(*args, "trst_pulls_srst") == 0)
2032 tmp |= RESET_TRST_PULLS_SRST;
2033 else if (strcmp(*args, "combined") == 0)
2034 tmp |= RESET_SRST_PULLS_TRST | RESET_TRST_PULLS_SRST;
2035 else
2036 m = 0;
2037 if (mask & m) {
2038 LOG_ERROR("extra reset_config %s spec (%s)",
2039 "combination", *args);
2040 return ERROR_INVALID_ARGUMENTS;
2041 }
2042 if (m)
2043 goto next;
2044
2045 /* trst_type (NOP without HAS_TRST) */
2046 m = RESET_TRST_OPEN_DRAIN;
2047 if (strcmp(*args, "trst_open_drain") == 0)
2048 tmp |= RESET_TRST_OPEN_DRAIN;
2049 else if (strcmp(*args, "trst_push_pull") == 0)
2050 /* push/pull from adapter - default */;
2051 else
2052 m = 0;
2053 if (mask & m) {
2054 LOG_ERROR("extra reset_config %s spec (%s)",
2055 "trst_type", *args);
2056 return ERROR_INVALID_ARGUMENTS;
2057 }
2058 if (m)
2059 goto next;
2060
2061 /* srst_type (NOP without HAS_SRST) */
2062 m |= RESET_SRST_PUSH_PULL;
2063 if (strcmp(*args, "srst_push_pull") == 0)
2064 tmp |= RESET_SRST_PUSH_PULL;
2065 else if (strcmp(*args, "srst_open_drain") == 0)
2066 /* open drain from adapter - default */;
2067 else
2068 m = 0;
2069 if (mask & m) {
2070 LOG_ERROR("extra reset_config %s spec (%s)",
2071 "srst_type", *args);
2072 return ERROR_INVALID_ARGUMENTS;
2073 }
2074 if (m)
2075 goto next;
2076
2077 /* caller provided nonsense; fail */
2078 LOG_ERROR("unknown reset_config flag (%s)", *args);
2079 return ERROR_INVALID_ARGUMENTS;
2080
2081 next:
2082 /* Remember the bits which were specified (mask)
2083 * and their new values (new_cfg).
2084 */
2085 mask |= m;
2086 new_cfg |= tmp;
2087 }
2088
2089 /* clear previous values of those bits, save new values */
2090 jtag_reset_config &= ~mask;
2091 jtag_reset_config |= new_cfg;
2092
2093 return ERROR_OK;
2094 }
2095
2096 static int handle_jtag_nsrst_delay_command(struct command_context_s *cmd_ctx,
2097 char *cmd, char **args, int argc)
2098 {
2099 if (argc > 1)
2100 return ERROR_COMMAND_SYNTAX_ERROR;
2101 if (argc == 1)
2102 jtag_set_nsrst_delay(strtoul(args[0], NULL, 0));
2103 command_print(cmd_ctx, "jtag_nsrst_delay: %u", jtag_get_nsrst_delay());
2104 return ERROR_OK;
2105 }
2106
2107 static int handle_jtag_ntrst_delay_command(struct command_context_s *cmd_ctx,
2108 char *cmd, char **args, int argc)
2109 {
2110 if (argc > 1)
2111 return ERROR_COMMAND_SYNTAX_ERROR;
2112 if (argc == 1)
2113 jtag_set_ntrst_delay(strtoul(args[0], NULL, 0));
2114 command_print(cmd_ctx, "jtag_ntrst_delay: %u", jtag_get_ntrst_delay());
2115 return ERROR_OK;
2116 }
2117
2118 static int handle_jtag_speed_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2119 {
2120 int retval = ERROR_OK;
2121
2122 if (argc > 1)
2123 return ERROR_COMMAND_SYNTAX_ERROR;
2124 if (argc == 1)
2125 {
2126 LOG_DEBUG("handle jtag speed");
2127
2128 int cur_speed = 0;
2129 cur_speed = jtag_speed = strtoul(args[0], NULL, 0);
2130
2131 /* this command can be called during CONFIG,
2132 * in which case jtag isn't initialized */
2133 if (jtag)
2134 retval = jtag->speed(cur_speed);
2135 }
2136 command_print(cmd_ctx, "jtag_speed: %d", jtag_speed);
2137
2138 return retval;
2139 }
2140
2141 static int handle_jtag_khz_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2142 {
2143 if (argc > 1)
2144 return ERROR_COMMAND_SYNTAX_ERROR;
2145
2146 int retval = ERROR_OK;
2147 int cur_speed = 0;
2148 if (argc == 1)
2149 {
2150 LOG_DEBUG("handle jtag khz");
2151
2152 jtag_set_speed_khz(strtoul(args[0], NULL, 0));
2153 if (jtag != NULL)
2154 {
2155 LOG_DEBUG("have interface set up");
2156 int speed_div1;
2157 retval = jtag->khz(jtag_get_speed_khz(), &speed_div1);
2158 if (ERROR_OK != retval)
2159 {
2160 jtag_set_speed_khz(0);
2161 return retval;
2162 }
2163 cur_speed = jtag_speed = speed_div1;
2164
2165 retval = jtag->speed(cur_speed);
2166 }
2167 else
2168 hasKHz = true;
2169 }
2170
2171 cur_speed = jtag_get_speed_khz();
2172 if (jtag != NULL)
2173 {
2174 retval = jtag->speed_div(jtag_speed, &cur_speed);
2175 if (ERROR_OK != retval)
2176 return retval;
2177 }
2178
2179 if (cur_speed)
2180 command_print(cmd_ctx, "%d kHz", cur_speed);
2181 else
2182 command_print(cmd_ctx, "RCLK - adaptive");
2183 return retval;
2184
2185 }
2186
2187 static int handle_jtag_reset_command(struct command_context_s *cmd_ctx,
2188 char *cmd, char **args, int argc)
2189 {
2190 if (argc != 2)
2191 return ERROR_COMMAND_SYNTAX_ERROR;
2192
2193 int trst = -1;
2194 if (args[0][0] == '1')
2195 trst = 1;
2196 else if (args[0][0] == '0')
2197 trst = 0;
2198 else
2199 return ERROR_COMMAND_SYNTAX_ERROR;
2200
2201 int srst = -1;
2202 if (args[1][0] == '1')
2203 srst = 1;
2204 else if (args[1][0] == '0')
2205 srst = 0;
2206 else
2207 return ERROR_COMMAND_SYNTAX_ERROR;
2208
2209 if (jtag_interface_init(cmd_ctx) != ERROR_OK)
2210 return ERROR_JTAG_INIT_FAILED;
2211
2212 jtag_add_reset(trst, srst);
2213 jtag_execute_queue();
2214
2215 return ERROR_OK;
2216 }
2217
2218 static int handle_runtest_command(struct command_context_s *cmd_ctx,
2219 char *cmd, char **args, int argc)
2220 {
2221 if (argc != 1)
2222 return ERROR_COMMAND_SYNTAX_ERROR;
2223
2224 jtag_add_runtest(strtol(args[0], NULL, 0), jtag_get_end_state());
2225 jtag_execute_queue();
2226
2227 return ERROR_OK;
2228 }
2229
2230 /*
2231 * For "irscan" or "drscan" commands, the "end" (really, "next") state
2232 * should be stable ... and *NOT* a shift state, otherwise free-running
2233 * jtag clocks could change the values latched by the update state.
2234 */
2235 static bool scan_is_safe(tap_state_t state)
2236 {
2237 switch (state)
2238 {
2239 case TAP_RESET:
2240 case TAP_IDLE:
2241 case TAP_DRPAUSE:
2242 case TAP_IRPAUSE:
2243 return true;
2244 default:
2245 return false;
2246 }
2247 }
2248
2249
2250 static int handle_irscan_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2251 {
2252 int i;
2253 scan_field_t *fields;
2254 jtag_tap_t *tap;
2255 tap_state_t endstate;
2256
2257 if ((argc < 2) || (argc % 2))
2258 {
2259 return ERROR_COMMAND_SYNTAX_ERROR;
2260 }
2261
2262 /* optional "-endstate" "statename" at the end of the arguments,
2263 * so that e.g. IRPAUSE can let us load the data register before
2264 * entering RUN/IDLE to execute the instruction we load here.
2265 */
2266 endstate = TAP_IDLE;
2267
2268 if( argc >= 4 ){
2269 /* have at least one pair of numbers. */
2270 /* is last pair the magic text? */
2271 if( 0 == strcmp( "-endstate", args[ argc - 2 ] ) ){
2272 const char *cpA;
2273 const char *cpS;
2274 cpA = args[ argc-1 ];
2275 for( endstate = 0 ; endstate < TAP_NUM_STATES ; endstate++ ){
2276 cpS = tap_state_name( endstate );
2277 if( 0 == strcmp( cpA, cpS ) ){
2278 break;
2279 }
2280 }
2281 if( endstate >= TAP_NUM_STATES ){
2282 return ERROR_COMMAND_SYNTAX_ERROR;
2283 } else {
2284 if (!scan_is_safe(endstate))
2285 LOG_WARNING("irscan with unsafe "
2286 "endstate \"%s\"", cpA);
2287 /* found - remove the last 2 args */
2288 argc -= 2;
2289 }
2290 }
2291 }
2292
2293 int num_fields = argc / 2;
2294
2295 fields = malloc(sizeof(scan_field_t) * num_fields);
2296
2297 for (i = 0; i < num_fields; i++)
2298 {
2299 tap = jtag_tap_by_string( args[i*2] );
2300 if (tap==NULL)
2301 {
2302 command_print( cmd_ctx, "Tap: %s unknown", args[i*2] );
2303 return ERROR_FAIL;
2304 }
2305 int field_size = tap->ir_length;
2306 fields[i].tap = tap;
2307 fields[i].num_bits = field_size;
2308 fields[i].out_value = malloc(CEIL(field_size, 8));
2309 buf_set_u32(fields[i].out_value, 0, field_size, strtoul(args[i*2+1], NULL, 0));
2310 fields[i].in_value = NULL;
2311 }
2312
2313 /* did we have an endstate? */
2314 jtag_add_ir_scan(num_fields, fields, endstate);
2315
2316 int retval=jtag_execute_queue();
2317
2318 for (i = 0; i < num_fields; i++)
2319 free(fields[i].out_value);
2320
2321 free (fields);
2322
2323 return retval;
2324 }
2325
2326 static int Jim_Command_drscan(Jim_Interp *interp, int argc, Jim_Obj *const *args)
2327 {
2328 int retval;
2329 scan_field_t *fields;
2330 int num_fields;
2331 int field_count = 0;
2332 int i, e;
2333 jtag_tap_t *tap;
2334 tap_state_t endstate;
2335
2336 /* args[1] = device
2337 * args[2] = num_bits
2338 * args[3] = hex string
2339 * ... repeat num bits and hex string ...
2340 *
2341 * .. optionally:
2342 * args[N-2] = "-endstate"
2343 * args[N-1] = statename
2344 */
2345 if ((argc < 4) || ((argc % 2)!=0))
2346 {
2347 Jim_WrongNumArgs(interp, 1, args, "wrong arguments");
2348 return JIM_ERR;
2349 }
2350
2351 endstate = TAP_IDLE;
2352
2353 /* validate arguments as numbers */
2354 e = JIM_OK;
2355 for (i = 2; i < argc; i+=2)
2356 {
2357 long bits;
2358 const char *cp;
2359
2360 e = Jim_GetLong(interp, args[i], &bits);
2361 /* If valid - try next arg */
2362 if( e == JIM_OK ){
2363 continue;
2364 }
2365
2366 /* Not valid.. are we at the end? */
2367 if ( ((i+2) != argc) ){
2368 /* nope, then error */
2369 return e;
2370 }
2371
2372 /* it could be: "-endstate FOO"
2373 * e.g. DRPAUSE so we can issue more instructions
2374 * before entering RUN/IDLE and executing them.
2375 */
2376
2377 /* get arg as a string. */
2378 cp = Jim_GetString( args[i], NULL );
2379 /* is it the magic? */
2380 if( 0 == strcmp( "-endstate", cp ) ){
2381 /* is the statename valid? */
2382 cp = Jim_GetString( args[i+1], NULL );
2383
2384 /* see if it is a valid state name */
2385 endstate = tap_state_by_name(cp);
2386 if( endstate < 0 ){
2387 /* update the error message */
2388 Jim_SetResult_sprintf(interp,"endstate: %s invalid", cp );
2389 } else {
2390 if (!scan_is_safe(endstate))
2391 LOG_WARNING("drscan with unsafe "
2392 "endstate \"%s\"", cp);
2393
2394 /* valid - so clear the error */
2395 e = JIM_OK;
2396 /* and remove the last 2 args */
2397 argc -= 2;
2398 }
2399 }
2400
2401 /* Still an error? */
2402 if( e != JIM_OK ){
2403 return e; /* too bad */
2404 }
2405 } /* validate args */
2406
2407 tap = jtag_tap_by_jim_obj( interp, args[1] );
2408 if( tap == NULL ){
2409 return JIM_ERR;
2410 }
2411
2412 num_fields=(argc-2)/2;
2413 fields = malloc(sizeof(scan_field_t) * num_fields);
2414 for (i = 2; i < argc; i+=2)
2415 {
2416 long bits;
2417 int len;
2418 const char *str;
2419
2420 Jim_GetLong(interp, args[i], &bits);
2421 str = Jim_GetString(args[i+1], &len);
2422
2423 fields[field_count].tap = tap;
2424 fields[field_count].num_bits = bits;
2425 fields[field_count].out_value = malloc(CEIL(bits, 8));
2426 str_to_buf(str, len, fields[field_count].out_value, bits, 0);
2427 fields[field_count].in_value = fields[field_count].out_value;
2428 field_count++;
2429 }
2430
2431 jtag_add_dr_scan(num_fields, fields, endstate);
2432
2433 retval = jtag_execute_queue();
2434 if (retval != ERROR_OK)
2435 {
2436 Jim_SetResultString(interp, "drscan: jtag execute failed",-1);
2437 return JIM_ERR;
2438 }
2439
2440 field_count=0;
2441 Jim_Obj *list = Jim_NewListObj(interp, NULL, 0);
2442 for (i = 2; i < argc; i+=2)
2443 {
2444 long bits;
2445 char *str;
2446
2447 Jim_GetLong(interp, args[i], &bits);
2448 str = buf_to_str(fields[field_count].in_value, bits, 16);
2449 free(fields[field_count].out_value);
2450
2451 Jim_ListAppendElement(interp, list, Jim_NewStringObj(interp, str, strlen(str)));
2452 free(str);
2453 field_count++;
2454 }
2455
2456 Jim_SetResult(interp, list);
2457
2458 free(fields);
2459
2460 return JIM_OK;
2461 }
2462
2463
2464 static int Jim_Command_flush_count(Jim_Interp *interp, int argc, Jim_Obj *const *args)
2465 {
2466 Jim_SetResult(interp, Jim_NewIntObj(interp, jtag_get_flush_queue_count()));
2467
2468 return JIM_OK;
2469 }
2470
2471
2472 static int handle_verify_ircapture_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2473 {
2474 if (argc == 1)
2475 {
2476 if (strcmp(args[0], "enable") == 0)
2477 {
2478 jtag_verify_capture_ir = 1;
2479 }
2480 else if (strcmp(args[0], "disable") == 0)
2481 {
2482 jtag_verify_capture_ir = 0;
2483 } else
2484 {
2485 return ERROR_COMMAND_SYNTAX_ERROR;
2486 }
2487 } else if (argc != 0)
2488 {
2489 return ERROR_COMMAND_SYNTAX_ERROR;
2490 }
2491
2492 command_print(cmd_ctx, "verify Capture-IR is %s", (jtag_verify_capture_ir) ? "enabled": "disabled");
2493
2494 return ERROR_OK;
2495 }
2496
2497 void jtag_set_verify(bool enable)
2498 {
2499 jtag_verify = enable;
2500 }
2501
2502 bool jtag_will_verify()
2503 {
2504 return jtag_verify;
2505 }
2506
2507 static int handle_verify_jtag_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2508 {
2509 if (argc > 1)
2510 return ERROR_COMMAND_SYNTAX_ERROR;
2511
2512 if (argc == 1)
2513 {
2514 if (strcmp(args[0], "enable") == 0)
2515 jtag_set_verify(true);
2516 else if (strcmp(args[0], "disable") == 0)
2517 jtag_set_verify(false);
2518 else
2519 return ERROR_COMMAND_SYNTAX_ERROR;
2520 }
2521
2522 const char *status = jtag_will_verify() ? "enabled": "disabled";
2523 command_print(cmd_ctx, "verify jtag capture is %s", status);
2524
2525 return ERROR_OK;
2526 }
2527
2528
2529 int jtag_power_dropout(int *dropout)
2530 {
2531 return jtag->power_dropout(dropout);
2532 }
2533
2534 int jtag_srst_asserted(int *srst_asserted)
2535 {
2536 return jtag->srst_asserted(srst_asserted);
2537 }
2538
2539 void jtag_tap_handle_event( jtag_tap_t * tap, enum jtag_tap_event e)
2540 {
2541 jtag_tap_event_action_t * jteap;
2542 int done;
2543
2544 jteap = tap->event_action;
2545
2546 done = 0;
2547 while (jteap) {
2548 if (jteap->event == e) {
2549 done = 1;
2550 LOG_DEBUG( "JTAG tap: %s event: %d (%s) action: %s\n",
2551 tap->dotted_name,
2552 e,
2553 Jim_Nvp_value2name_simple(nvp_jtag_tap_event, e)->name,
2554 Jim_GetString(jteap->body, NULL) );
2555 if (Jim_EvalObj(interp, jteap->body) != JIM_OK) {
2556 Jim_PrintErrorMessage(interp);
2557 }
2558 }
2559
2560 jteap = jteap->next;
2561 }
2562
2563 if (!done) {
2564 LOG_DEBUG( "event %d %s - no action",
2565 e,
2566 Jim_Nvp_value2name_simple( nvp_jtag_tap_event, e)->name);
2567 }
2568 }
2569
2570 static int handle_tms_sequence_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2571 {
2572 if (argc > 1)
2573 return ERROR_COMMAND_SYNTAX_ERROR;
2574
2575 if (argc == 1)
2576 {
2577 bool use_new_table;
2578 if (strcmp(args[0], "short") == 0)
2579 use_new_table = true;
2580 else if (strcmp(args[0], "long") == 0)
2581 use_new_table = false;
2582 else
2583 return ERROR_COMMAND_SYNTAX_ERROR;
2584
2585 tap_use_new_tms_table(use_new_table);
2586 }
2587
2588 command_print(cmd_ctx, "tms sequence is %s",
2589 tap_uses_new_tms_table() ? "short": "long");
2590
2591 return ERROR_OK;
2592 }
2593
2594 /**
2595 * Function jtag_add_statemove
2596 * moves from the current state to the goal \a state. This needs
2597 * to be handled according to the xsvf spec, see the XSTATE command
2598 * description.
2599 */
2600 int jtag_add_statemove(tap_state_t goal_state)
2601 {
2602 int retval = ERROR_OK;
2603
2604 tap_state_t moves[8];
2605 tap_state_t cur_state = cmd_queue_cur_state;
2606 int i;
2607 int tms_bits;
2608 int tms_count;
2609
2610 LOG_DEBUG( "cur_state=%s goal_state=%s",
2611 tap_state_name(cur_state),
2612 tap_state_name(goal_state) );
2613
2614
2615 /* From the XSVF spec, pertaining to XSTATE:
2616
2617 For special states known as stable states (Test-Logic-Reset,
2618 Run-Test/Idle, Pause-DR, Pause- IR), an XSVF interpreter follows
2619 predefined TAP state paths when the starting state is a stable state and
2620 when the XSTATE specifies a new stable state (see the STATE command in
2621 the [Ref 5] for the TAP state paths between stable states). For
2622 non-stable states, XSTATE should specify a state that is only one TAP
2623 state transition distance from the current TAP state to avoid undefined
2624 TAP state paths. A sequence of multiple XSTATE commands can be issued to
2625 transition the TAP through a specific state path.
2626 */
2627
2628 if (goal_state==cur_state )
2629 ; /* nothing to do */
2630
2631 else if( goal_state==TAP_RESET )
2632 {
2633 jtag_add_tlr();
2634 }
2635
2636 else if( tap_is_state_stable(cur_state) && tap_is_state_stable(goal_state) )
2637 {
2638 /* note: unless tms_bits holds a path that agrees with [Ref 5] in above
2639 spec, then this code is not fully conformant to the xsvf spec. This
2640 puts a burden on tap_get_tms_path() function from the xsvf spec.
2641 If in doubt, you should confirm that that burden is being met.
2642 */
2643
2644 tms_bits = tap_get_tms_path(cur_state, goal_state);
2645 tms_count = tap_get_tms_path_len(cur_state, goal_state);
2646
2647 assert( (unsigned) tms_count < DIM(moves) );
2648
2649 for (i=0; i<tms_count; i++, tms_bits>>=1)
2650 {
2651 bool bit = tms_bits & 1;
2652
2653 cur_state = tap_state_transition(cur_state, bit);
2654 moves[i] = cur_state;
2655 }
2656
2657 jtag_add_pathmove(tms_count, moves);
2658 }
2659
2660 /* else state must be immediately reachable in one clock cycle, and does not
2661 need to be a stable state.
2662 */
2663 else if( tap_state_transition(cur_state, true) == goal_state
2664 || tap_state_transition(cur_state, false) == goal_state )
2665 {
2666 /* move a single state */
2667 moves[0] = goal_state;
2668 jtag_add_pathmove( 1, moves );
2669 }
2670
2671 else
2672 {
2673 retval = ERROR_FAIL;
2674 }
2675
2676 return retval;
2677 }
2678
2679 void jtag_set_nsrst_delay(unsigned delay)
2680 {
2681 jtag_nsrst_delay = delay;
2682 }
2683 unsigned jtag_get_nsrst_delay(void)
2684 {
2685 return jtag_nsrst_delay;
2686 }
2687 void jtag_set_ntrst_delay(unsigned delay)
2688 {
2689 jtag_ntrst_delay = delay;
2690 }
2691 unsigned jtag_get_ntrst_delay(void)
2692 {
2693 return jtag_ntrst_delay;
2694 }
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