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Simplify jtag_add_plain_ir_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 *
558 * For not bypassed TAPs the function checks in_fields and uses fields specified there.
559 * For bypassed TAPs the function generates a dummy 1bit field.
560 *
561 * The bypass status of TAPs is set by jtag_add_ir_scan().
562 *
563 */
564 void jtag_add_dr_scan(int in_num_fields, const scan_field_t *in_fields, tap_state_t state)
565 {
566 int retval;
567
568 jtag_prelude(state);
569
570 retval=interface_jtag_add_dr_scan(in_num_fields, in_fields, state);
571 if (retval!=ERROR_OK)
572 jtag_error=retval;
573 }
574
575
576
577 /**
578 * Duplicate the scan fields passed into the function into a DR SCAN command
579 *
580 * This function assumes that the caller handles extra fields for bypassed TAPs
581 *
582 */
583 void jtag_add_plain_dr_scan(int in_num_fields, const scan_field_t *in_fields, tap_state_t state)
584 {
585 int retval;
586
587 jtag_prelude(state);
588
589 retval=interface_jtag_add_plain_dr_scan(in_num_fields, in_fields, state);
590 if (retval!=ERROR_OK)
591 jtag_error=retval;
592 }
593
594 void jtag_add_dr_out(jtag_tap_t* tap,
595 int num_fields, const int* num_bits, const u32* value,
596 tap_state_t end_state)
597 {
598 assert(end_state != TAP_INVALID);
599
600 cmd_queue_cur_state = end_state;
601
602 interface_jtag_add_dr_out(tap,
603 num_fields, num_bits, value,
604 end_state);
605 }
606
607 void jtag_add_tlr(void)
608 {
609 jtag_prelude(TAP_RESET);
610
611 int retval;
612 retval=interface_jtag_add_tlr();
613 if (retval!=ERROR_OK)
614 jtag_error=retval;
615
616 jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
617 }
618
619 void jtag_add_pathmove(int num_states, const tap_state_t *path)
620 {
621 tap_state_t cur_state = cmd_queue_cur_state;
622 int i;
623 int retval;
624
625 /* the last state has to be a stable state */
626 if (!tap_is_state_stable(path[num_states - 1]))
627 {
628 LOG_ERROR("BUG: TAP path doesn't finish in a stable state");
629 exit(-1);
630 }
631
632 for (i=0; i<num_states; i++)
633 {
634 if (path[i] == TAP_RESET)
635 {
636 LOG_ERROR("BUG: TAP_RESET is not a valid state for pathmove sequences");
637 exit(-1);
638 }
639
640 if ( tap_state_transition(cur_state, true) != path[i]
641 && tap_state_transition(cur_state, false) != path[i])
642 {
643 LOG_ERROR("BUG: %s -> %s isn't a valid TAP transition", tap_state_name(cur_state), tap_state_name(path[i]));
644 exit(-1);
645 }
646 cur_state = path[i];
647 }
648
649 jtag_checks();
650
651 retval = interface_jtag_add_pathmove(num_states, path);
652 cmd_queue_cur_state = path[num_states - 1];
653 if (retval!=ERROR_OK)
654 jtag_error=retval;
655 }
656
657 void jtag_add_runtest(int num_cycles, tap_state_t state)
658 {
659 int retval;
660
661 jtag_prelude(state);
662
663 /* executed by sw or hw fifo */
664 retval=interface_jtag_add_runtest(num_cycles, state);
665 if (retval!=ERROR_OK)
666 jtag_error=retval;
667 }
668
669
670 void jtag_add_clocks( int num_cycles )
671 {
672 int retval;
673
674 if( !tap_is_state_stable(cmd_queue_cur_state) )
675 {
676 LOG_ERROR( "jtag_add_clocks() was called with TAP in non-stable state \"%s\"",
677 tap_state_name(cmd_queue_cur_state) );
678 jtag_error = ERROR_JTAG_NOT_STABLE_STATE;
679 return;
680 }
681
682 if( num_cycles > 0 )
683 {
684 jtag_checks();
685
686 retval = interface_jtag_add_clocks(num_cycles);
687 if (retval != ERROR_OK)
688 jtag_error=retval;
689 }
690 }
691
692 void jtag_add_reset(int req_tlr_or_trst, int req_srst)
693 {
694 int trst_with_tlr = 0;
695 int retval;
696
697 /* FIX!!! there are *many* different cases here. A better
698 * approach is needed for legal combinations of transitions...
699 */
700 if ((jtag_reset_config & RESET_HAS_SRST)&&
701 (jtag_reset_config & RESET_HAS_TRST)&&
702 ((jtag_reset_config & RESET_SRST_PULLS_TRST)==0))
703 {
704 if (((req_tlr_or_trst&&!jtag_trst)||
705 (!req_tlr_or_trst&&jtag_trst))&&
706 ((req_srst&&!jtag_srst)||
707 (!req_srst&&jtag_srst)))
708 {
709 /* FIX!!! srst_pulls_trst allows 1,1 => 0,0 transition.... */
710 //LOG_ERROR("BUG: transition of req_tlr_or_trst and req_srst in the same jtag_add_reset() call is undefined");
711 }
712 }
713
714 /* Make sure that jtag_reset_config allows the requested reset */
715 /* if SRST pulls TRST, we can't fulfill srst == 1 with trst == 0 */
716 if (((jtag_reset_config & RESET_SRST_PULLS_TRST) && (req_srst == 1)) && (!req_tlr_or_trst))
717 {
718 LOG_ERROR("BUG: requested reset would assert trst");
719 jtag_error=ERROR_FAIL;
720 return;
721 }
722
723 /* if TRST pulls SRST, we reset with TAP T-L-R */
724 if (((jtag_reset_config & RESET_TRST_PULLS_SRST) && (req_tlr_or_trst)) && (req_srst == 0))
725 {
726 trst_with_tlr = 1;
727 }
728
729 if (req_srst && !(jtag_reset_config & RESET_HAS_SRST))
730 {
731 LOG_ERROR("BUG: requested SRST assertion, but the current configuration doesn't support this");
732 jtag_error=ERROR_FAIL;
733 return;
734 }
735
736 if (req_tlr_or_trst)
737 {
738 if (!trst_with_tlr && (jtag_reset_config & RESET_HAS_TRST))
739 {
740 jtag_trst = 1;
741 } else
742 {
743 trst_with_tlr = 1;
744 }
745 } else
746 {
747 jtag_trst = 0;
748 }
749
750 jtag_srst = req_srst;
751
752 retval = interface_jtag_add_reset(jtag_trst, jtag_srst);
753 if (retval!=ERROR_OK)
754 {
755 jtag_error=retval;
756 return;
757 }
758 jtag_execute_queue();
759
760 if (jtag_srst)
761 {
762 LOG_DEBUG("SRST line asserted");
763 }
764 else
765 {
766 LOG_DEBUG("SRST line released");
767 if (jtag_nsrst_delay)
768 jtag_add_sleep(jtag_nsrst_delay * 1000);
769 }
770
771 if (trst_with_tlr)
772 {
773 LOG_DEBUG("JTAG reset with RESET instead of TRST");
774 jtag_set_end_state(TAP_RESET);
775 jtag_add_tlr();
776 return;
777 }
778
779 if (jtag_trst)
780 {
781 /* we just asserted nTRST, so we're now in Test-Logic-Reset,
782 * and inform possible listeners about this
783 */
784 LOG_DEBUG("TRST line asserted");
785 tap_set_state(TAP_RESET);
786 jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
787 }
788 else
789 {
790 if (jtag_ntrst_delay)
791 jtag_add_sleep(jtag_ntrst_delay * 1000);
792 }
793 }
794
795 tap_state_t jtag_set_end_state(tap_state_t state)
796 {
797 if ((state == TAP_DRSHIFT)||(state == TAP_IRSHIFT))
798 {
799 LOG_ERROR("BUG: TAP_DRSHIFT/IRSHIFT can't be end state. Calling code should use a larger scan field");
800 }
801
802 if (state!=TAP_INVALID)
803 cmd_queue_end_state = state;
804 return cmd_queue_end_state;
805 }
806
807 tap_state_t jtag_get_end_state(void)
808 {
809 return cmd_queue_end_state;
810 }
811
812 void jtag_add_sleep(u32 us)
813 {
814 keep_alive(); /* we might be running on a very slow JTAG clk */
815 int retval=interface_jtag_add_sleep(us);
816 if (retval!=ERROR_OK)
817 jtag_error=retval;
818 return;
819 }
820
821 int jtag_check_value_inner(u8 *captured, u8 *in_check_value, u8 *in_check_mask, int num_bits)
822 {
823 int retval = ERROR_OK;
824
825 int compare_failed = 0;
826
827 if (in_check_mask)
828 compare_failed = buf_cmp_mask(captured, in_check_value, in_check_mask, num_bits);
829 else
830 compare_failed = buf_cmp(captured, in_check_value, num_bits);
831
832 if (compare_failed){
833 /* An error handler could have caught the failing check
834 * only report a problem when there wasn't a handler, or if the handler
835 * acknowledged the error
836 */
837 /*
838 LOG_WARNING("TAP %s:",
839 jtag_tap_name(field->tap));
840 */
841 if (compare_failed)
842 {
843 char *captured_char = buf_to_str(captured, (num_bits > DEBUG_JTAG_IOZ) ? DEBUG_JTAG_IOZ : num_bits, 16);
844 char *in_check_value_char = buf_to_str(in_check_value, (num_bits > DEBUG_JTAG_IOZ) ? DEBUG_JTAG_IOZ : num_bits, 16);
845
846 if (in_check_mask)
847 {
848 char *in_check_mask_char;
849 in_check_mask_char = buf_to_str(in_check_mask, (num_bits > DEBUG_JTAG_IOZ) ? DEBUG_JTAG_IOZ : num_bits, 16);
850 LOG_WARNING("value captured during scan didn't pass the requested check:");
851 LOG_WARNING("captured: 0x%s check_value: 0x%s check_mask: 0x%s",
852 captured_char, in_check_value_char, in_check_mask_char);
853 free(in_check_mask_char);
854 }
855 else
856 {
857 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);
858 }
859
860 free(captured_char);
861 free(in_check_value_char);
862
863 retval = ERROR_JTAG_QUEUE_FAILED;
864 }
865
866 }
867 return retval;
868 }
869
870 void jtag_check_value_mask(scan_field_t *field, u8 *value, u8 *mask)
871 {
872 assert(field->in_value != NULL);
873
874 if (value==NULL)
875 {
876 /* no checking to do */
877 return;
878 }
879
880 jtag_execute_queue_noclear();
881
882 int retval=jtag_check_value_inner(field->in_value, value, mask, field->num_bits);
883 jtag_set_error(retval);
884 }
885
886
887
888 int default_interface_jtag_execute_queue(void)
889 {
890 if (NULL == jtag)
891 {
892 LOG_ERROR("No JTAG interface configured yet. "
893 "Issue 'init' command in startup scripts "
894 "before communicating with targets.");
895 return ERROR_FAIL;
896 }
897
898 return jtag->execute_queue();
899 }
900
901 void jtag_execute_queue_noclear(void)
902 {
903 jtag_flush_queue_count++;
904 jtag_set_error(interface_jtag_execute_queue());
905 }
906
907 int jtag_get_flush_queue_count(void)
908 {
909 return jtag_flush_queue_count;
910 }
911
912 int jtag_execute_queue(void)
913 {
914 jtag_execute_queue_noclear();
915 return jtag_error_clear();
916 }
917
918 static int jtag_reset_callback(enum jtag_event event, void *priv)
919 {
920 jtag_tap_t *tap = priv;
921
922 LOG_DEBUG("-");
923
924 if (event == JTAG_TRST_ASSERTED)
925 {
926 buf_set_ones(tap->cur_instr, tap->ir_length);
927 tap->bypass = 1;
928 }
929
930 return ERROR_OK;
931 }
932
933 void jtag_sleep(u32 us)
934 {
935 alive_sleep(us/1000);
936 }
937
938 /// maximum number of JTAG devices expected in the chain
939 #define JTAG_MAX_CHAIN_SIZE 20
940
941 #define EXTRACT_MFG(X) (((X) & 0xffe) >> 1)
942 #define EXTRACT_PART(X) (((X) & 0xffff000) >> 12)
943 #define EXTRACT_VER(X) (((X) & 0xf0000000) >> 28)
944
945 static int jtag_examine_chain_execute(u8 *idcode_buffer, unsigned num_idcode)
946 {
947 scan_field_t field = {
948 .tap = NULL,
949 .num_bits = num_idcode * 32,
950 .out_value = idcode_buffer,
951 .in_value = idcode_buffer,
952 };
953
954 // initialize to the end of chain ID value
955 for (unsigned i = 0; i < JTAG_MAX_CHAIN_SIZE; i++)
956 buf_set_u32(idcode_buffer, i * 32, 32, 0x000000FF);
957
958 jtag_add_plain_dr_scan(1, &field, TAP_RESET);
959 return jtag_execute_queue();
960 }
961
962 static bool jtag_examine_chain_check(u8 *idcodes, unsigned count)
963 {
964 u8 zero_check = 0x0;
965 u8 one_check = 0xff;
966
967 for (unsigned i = 0; i < count * 4; i++)
968 {
969 zero_check |= idcodes[i];
970 one_check &= idcodes[i];
971 }
972
973 /* if there wasn't a single non-zero bit or if all bits were one,
974 * the scan is not valid */
975 if (zero_check == 0x00 || one_check == 0xff)
976 {
977 LOG_ERROR("JTAG communication failure: check connection, "
978 "JTAG interface, target power etc.");
979 return false;
980 }
981 return true;
982 }
983
984 static void jtag_examine_chain_display(enum log_levels level, const char *msg,
985 const char *name, u32 idcode)
986 {
987 log_printf_lf(level, __FILE__, __LINE__, __FUNCTION__,
988 "JTAG tap: %s %16.16s: 0x%08x "
989 "(mfg: 0x%3.3x, part: 0x%4.4x, ver: 0x%1.1x)",
990 name, msg, idcode,
991 EXTRACT_MFG(idcode), EXTRACT_PART(idcode), EXTRACT_VER(idcode) );
992 }
993
994 static bool jtag_idcode_is_final(u32 idcode)
995 {
996 return idcode == 0x000000FF || idcode == 0xFFFFFFFF;
997 }
998
999 /**
1000 * This helper checks that remaining bits in the examined chain data are
1001 * all as expected, but a single JTAG device requires only 64 bits to be
1002 * read back correctly. This can help identify and diagnose problems
1003 * with the JTAG chain earlier, gives more helpful/explicit error messages.
1004 */
1005 static void jtag_examine_chain_end(u8 *idcodes, unsigned count, unsigned max)
1006 {
1007 bool triggered = false;
1008 for ( ; count < max - 31; count += 32)
1009 {
1010 u32 idcode = buf_get_u32(idcodes, count, 32);
1011 // do not trigger the warning if the data looks good
1012 if (!triggered && jtag_idcode_is_final(idcode))
1013 continue;
1014 LOG_WARNING("Unexpected idcode after end of chain: %d 0x%08x",
1015 count, idcode);
1016 triggered = true;
1017 }
1018 }
1019
1020 static bool jtag_examine_chain_match_tap(const struct jtag_tap_s *tap)
1021 {
1022 if (0 == tap->expected_ids_cnt)
1023 {
1024 /// @todo Enable LOG_INFO to ask for reports about unknown TAP IDs.
1025 #if 0
1026 LOG_INFO("Uknown JTAG TAP ID: 0x%08x", tap->idcode)
1027 LOG_INFO("Please report the chip name and reported ID code to the openocd project");
1028 #endif
1029 return true;
1030 }
1031
1032 /* Loop over the expected identification codes and test for a match */
1033 u8 ii;
1034 for (ii = 0; ii < tap->expected_ids_cnt; ii++)
1035 {
1036 if (tap->idcode == tap->expected_ids[ii])
1037 break;
1038 }
1039
1040 /* If none of the expected ids matched, log an error */
1041 if (ii != tap->expected_ids_cnt)
1042 {
1043 LOG_INFO("JTAG Tap/device matched");
1044 return true;
1045 }
1046 jtag_examine_chain_display(LOG_LVL_ERROR, "got",
1047 tap->dotted_name, tap->idcode);
1048 for (ii = 0; ii < tap->expected_ids_cnt; ii++)
1049 {
1050 char msg[32];
1051 snprintf(msg, sizeof(msg), "expected %hhu of %hhu",
1052 ii + 1, tap->expected_ids_cnt);
1053 jtag_examine_chain_display(LOG_LVL_ERROR, msg,
1054 tap->dotted_name, tap->expected_ids[ii]);
1055 }
1056 return false;
1057 }
1058
1059 /* Try to examine chain layout according to IEEE 1149.1 §12
1060 */
1061 static int jtag_examine_chain(void)
1062 {
1063 u8 idcode_buffer[JTAG_MAX_CHAIN_SIZE * 4];
1064 unsigned device_count = 0;
1065
1066 jtag_examine_chain_execute(idcode_buffer, JTAG_MAX_CHAIN_SIZE);
1067
1068 if (!jtag_examine_chain_check(idcode_buffer, JTAG_MAX_CHAIN_SIZE))
1069 return ERROR_JTAG_INIT_FAILED;
1070
1071 /* point at the 1st tap */
1072 jtag_tap_t *tap = jtag_tap_next_enabled(NULL);
1073 if (tap == NULL)
1074 {
1075 LOG_ERROR("JTAG: No taps enabled?");
1076 return ERROR_JTAG_INIT_FAILED;
1077 }
1078
1079 for (unsigned bit_count = 0; bit_count < (JTAG_MAX_CHAIN_SIZE * 32) - 31;)
1080 {
1081 u32 idcode = buf_get_u32(idcode_buffer, bit_count, 32);
1082 if ((idcode & 1) == 0)
1083 {
1084 /* LSB must not be 0, this indicates a device in bypass */
1085 LOG_WARNING("Tap/Device does not have IDCODE");
1086 idcode = 0;
1087
1088 bit_count += 1;
1089 }
1090 else
1091 {
1092 /*
1093 * End of chain (invalid manufacturer ID) some devices, such
1094 * as AVR will output all 1's instead of TDI input value at
1095 * end of chain.
1096 */
1097 if (jtag_idcode_is_final(idcode))
1098 {
1099 jtag_examine_chain_end(idcode_buffer,
1100 bit_count + 32, JTAG_MAX_CHAIN_SIZE * 32);
1101 break;
1102 }
1103
1104 jtag_examine_chain_display(LOG_LVL_INFO, "tap/device found",
1105 tap ? tap->dotted_name : "(not-named)",
1106 idcode);
1107
1108 bit_count += 32;
1109 }
1110 device_count++;
1111 if (!tap)
1112 continue;
1113
1114 tap->idcode = idcode;
1115
1116 // ensure the TAP ID does matches what was expected
1117 if (!jtag_examine_chain_match_tap(tap))
1118 return ERROR_JTAG_INIT_FAILED;
1119
1120 tap = jtag_tap_next_enabled(tap);
1121 }
1122
1123 /* see if number of discovered devices matches configuration */
1124 if (device_count != jtag_tap_count_enabled())
1125 {
1126 LOG_ERROR("number of discovered devices in JTAG chain (%i) "
1127 "does not match (enabled) configuration (%i), total taps: %d",
1128 device_count, jtag_tap_count_enabled(), jtag_tap_count());
1129 LOG_ERROR("check the config file and ensure proper JTAG communication"
1130 " (connections, speed, ...)");
1131 return ERROR_JTAG_INIT_FAILED;
1132 }
1133
1134 return ERROR_OK;
1135 }
1136
1137 static int jtag_validate_chain(void)
1138 {
1139 jtag_tap_t *tap;
1140 int total_ir_length = 0;
1141 u8 *ir_test = NULL;
1142 scan_field_t field;
1143 int chain_pos = 0;
1144
1145 tap = NULL;
1146 total_ir_length = 0;
1147 for(;;){
1148 tap = jtag_tap_next_enabled(tap);
1149 if( tap == NULL ){
1150 break;
1151 }
1152 total_ir_length += tap->ir_length;
1153 }
1154
1155 total_ir_length += 2;
1156 ir_test = malloc(CEIL(total_ir_length, 8));
1157 buf_set_ones(ir_test, total_ir_length);
1158
1159 field.tap = NULL;
1160 field.num_bits = total_ir_length;
1161 field.out_value = ir_test;
1162 field.in_value = ir_test;
1163
1164
1165 jtag_add_plain_ir_scan(1, &field, TAP_RESET);
1166 jtag_execute_queue();
1167
1168 tap = NULL;
1169 chain_pos = 0;
1170 int val;
1171 for(;;){
1172 tap = jtag_tap_next_enabled(tap);
1173 if( tap == NULL ){
1174 break;
1175 }
1176
1177 val = buf_get_u32(ir_test, chain_pos, 2);
1178 if (val != 0x1)
1179 {
1180 char *cbuf = buf_to_str(ir_test, total_ir_length, 16);
1181 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);
1182 free(cbuf);
1183 free(ir_test);
1184 return ERROR_JTAG_INIT_FAILED;
1185 }
1186 chain_pos += tap->ir_length;
1187 }
1188
1189 val = buf_get_u32(ir_test, chain_pos, 2);
1190 if (val != 0x3)
1191 {
1192 char *cbuf = buf_to_str(ir_test, total_ir_length, 16);
1193 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);
1194 free(cbuf);
1195 free(ir_test);
1196 return ERROR_JTAG_INIT_FAILED;
1197 }
1198
1199 free(ir_test);
1200
1201 return ERROR_OK;
1202 }
1203
1204 enum jtag_tap_cfg_param {
1205 JCFG_EVENT
1206 };
1207
1208 static Jim_Nvp nvp_config_opts[] = {
1209 { .name = "-event", .value = JCFG_EVENT },
1210
1211 { .name = NULL, .value = -1 }
1212 };
1213
1214 static int jtag_tap_configure_cmd( Jim_GetOptInfo *goi, jtag_tap_t * tap)
1215 {
1216 Jim_Nvp *n;
1217 Jim_Obj *o;
1218 int e;
1219
1220 /* parse config or cget options */
1221 while (goi->argc > 0) {
1222 Jim_SetEmptyResult (goi->interp);
1223
1224 e = Jim_GetOpt_Nvp(goi, nvp_config_opts, &n);
1225 if (e != JIM_OK) {
1226 Jim_GetOpt_NvpUnknown(goi, nvp_config_opts, 0);
1227 return e;
1228 }
1229
1230 switch (n->value) {
1231 case JCFG_EVENT:
1232 if (goi->argc == 0) {
1233 Jim_WrongNumArgs( goi->interp, goi->argc, goi->argv, "-event ?event-name? ..." );
1234 return JIM_ERR;
1235 }
1236
1237 e = Jim_GetOpt_Nvp( goi, nvp_jtag_tap_event, &n );
1238 if (e != JIM_OK) {
1239 Jim_GetOpt_NvpUnknown(goi, nvp_jtag_tap_event, 1);
1240 return e;
1241 }
1242
1243 if (goi->isconfigure) {
1244 if (goi->argc != 1) {
1245 Jim_WrongNumArgs(goi->interp, goi->argc, goi->argv, "-event ?event-name? ?EVENT-BODY?");
1246 return JIM_ERR;
1247 }
1248 } else {
1249 if (goi->argc != 0) {
1250 Jim_WrongNumArgs(goi->interp, goi->argc, goi->argv, "-event ?event-name?");
1251 return JIM_ERR;
1252 }
1253 }
1254
1255 {
1256 jtag_tap_event_action_t *jteap;
1257
1258 jteap = tap->event_action;
1259 /* replace existing? */
1260 while (jteap) {
1261 if (jteap->event == (enum jtag_tap_event)n->value) {
1262 break;
1263 }
1264 jteap = jteap->next;
1265 }
1266
1267 if (goi->isconfigure) {
1268 if (jteap == NULL) {
1269 /* create new */
1270 jteap = calloc(1, sizeof (*jteap));
1271 }
1272 jteap->event = n->value;
1273 Jim_GetOpt_Obj( goi, &o);
1274 if (jteap->body) {
1275 Jim_DecrRefCount(interp, jteap->body);
1276 }
1277 jteap->body = Jim_DuplicateObj(goi->interp, o);
1278 Jim_IncrRefCount(jteap->body);
1279
1280 /* add to head of event list */
1281 jteap->next = tap->event_action;
1282 tap->event_action = jteap;
1283 Jim_SetEmptyResult(goi->interp);
1284 } else {
1285 /* get */
1286 if (jteap == NULL) {
1287 Jim_SetEmptyResult(goi->interp);
1288 } else {
1289 Jim_SetResult(goi->interp, Jim_DuplicateObj(goi->interp, jteap->body));
1290 }
1291 }
1292 }
1293 /* loop for more */
1294 break;
1295 }
1296 } /* while (goi->argc) */
1297
1298 return JIM_OK;
1299 }
1300
1301
1302 static void jtag_tap_init(jtag_tap_t *tap)
1303 {
1304 assert(0 != tap->ir_length);
1305
1306 tap->expected = malloc(tap->ir_length);
1307 tap->expected_mask = malloc(tap->ir_length);
1308 tap->cur_instr = malloc(tap->ir_length);
1309
1310 buf_set_u32(tap->expected, 0, tap->ir_length, tap->ir_capture_value);
1311 buf_set_u32(tap->expected_mask, 0, tap->ir_length, tap->ir_capture_mask);
1312 buf_set_ones(tap->cur_instr, tap->ir_length);
1313
1314 // place TAP in bypass mode
1315 tap->bypass = 1;
1316 // register the reset callback for the TAP
1317 jtag_register_event_callback(&jtag_reset_callback, tap);
1318
1319 LOG_DEBUG("Created Tap: %s @ abs position %d, "
1320 "irlen %d, capture: 0x%x mask: 0x%x", tap->dotted_name,
1321 tap->abs_chain_position, tap->ir_length,
1322 tap->ir_capture_value, tap->ir_capture_mask);
1323 jtag_tap_add(tap);
1324 }
1325
1326 static void jtag_tap_free(jtag_tap_t *tap)
1327 {
1328 /// @todo is anything missing? no memory leaks please
1329 free((void *)tap->expected_ids);
1330 free((void *)tap->chip);
1331 free((void *)tap->tapname);
1332 free((void *)tap->dotted_name);
1333 free(tap);
1334 }
1335
1336 static int jim_newtap_cmd( Jim_GetOptInfo *goi )
1337 {
1338 jtag_tap_t *pTap;
1339 jim_wide w;
1340 int x;
1341 int e;
1342 int reqbits;
1343 Jim_Nvp *n;
1344 char *cp;
1345 const Jim_Nvp opts[] = {
1346 #define NTAP_OPT_IRLEN 0
1347 { .name = "-irlen" , .value = NTAP_OPT_IRLEN },
1348 #define NTAP_OPT_IRMASK 1
1349 { .name = "-irmask" , .value = NTAP_OPT_IRMASK },
1350 #define NTAP_OPT_IRCAPTURE 2
1351 { .name = "-ircapture" , .value = NTAP_OPT_IRCAPTURE },
1352 #define NTAP_OPT_ENABLED 3
1353 { .name = "-enable" , .value = NTAP_OPT_ENABLED },
1354 #define NTAP_OPT_DISABLED 4
1355 { .name = "-disable" , .value = NTAP_OPT_DISABLED },
1356 #define NTAP_OPT_EXPECTED_ID 5
1357 { .name = "-expected-id" , .value = NTAP_OPT_EXPECTED_ID },
1358 { .name = NULL , .value = -1 },
1359 };
1360
1361 pTap = malloc( sizeof(jtag_tap_t) );
1362 memset( pTap, 0, sizeof(*pTap) );
1363 if( !pTap ){
1364 Jim_SetResult_sprintf( goi->interp, "no memory");
1365 return JIM_ERR;
1366 }
1367 /*
1368 * we expect CHIP + TAP + OPTIONS
1369 * */
1370 if( goi->argc < 3 ){
1371 Jim_SetResult_sprintf(goi->interp, "Missing CHIP TAP OPTIONS ....");
1372 return JIM_ERR;
1373 }
1374 Jim_GetOpt_String( goi, &cp, NULL );
1375 pTap->chip = strdup(cp);
1376
1377 Jim_GetOpt_String( goi, &cp, NULL );
1378 pTap->tapname = strdup(cp);
1379
1380 /* name + dot + name + null */
1381 x = strlen(pTap->chip) + 1 + strlen(pTap->tapname) + 1;
1382 cp = malloc( x );
1383 sprintf( cp, "%s.%s", pTap->chip, pTap->tapname );
1384 pTap->dotted_name = cp;
1385
1386 LOG_DEBUG("Creating New Tap, Chip: %s, Tap: %s, Dotted: %s, %d params",
1387 pTap->chip, pTap->tapname, pTap->dotted_name, goi->argc);
1388
1389 /* default is enabled */
1390 pTap->enabled = 1;
1391
1392 /* deal with options */
1393 #define NTREQ_IRLEN 1
1394 #define NTREQ_IRCAPTURE 2
1395 #define NTREQ_IRMASK 4
1396
1397 /* clear them as we find them */
1398 reqbits = (NTREQ_IRLEN | NTREQ_IRCAPTURE | NTREQ_IRMASK);
1399
1400 while( goi->argc ){
1401 e = Jim_GetOpt_Nvp( goi, opts, &n );
1402 if( e != JIM_OK ){
1403 Jim_GetOpt_NvpUnknown( goi, opts, 0 );
1404 return e;
1405 }
1406 LOG_DEBUG("Processing option: %s", n->name );
1407 switch( n->value ){
1408 case NTAP_OPT_ENABLED:
1409 pTap->enabled = 1;
1410 break;
1411 case NTAP_OPT_DISABLED:
1412 pTap->enabled = 0;
1413 break;
1414 case NTAP_OPT_EXPECTED_ID:
1415 {
1416 u32 *new_expected_ids;
1417
1418 e = Jim_GetOpt_Wide( goi, &w );
1419 if( e != JIM_OK) {
1420 Jim_SetResult_sprintf(goi->interp, "option: %s bad parameter", n->name);
1421 return e;
1422 }
1423
1424 new_expected_ids = malloc(sizeof(u32) * (pTap->expected_ids_cnt + 1));
1425 if (new_expected_ids == NULL) {
1426 Jim_SetResult_sprintf( goi->interp, "no memory");
1427 return JIM_ERR;
1428 }
1429
1430 memcpy(new_expected_ids, pTap->expected_ids, sizeof(u32) * pTap->expected_ids_cnt);
1431
1432 new_expected_ids[pTap->expected_ids_cnt] = w;
1433
1434 free(pTap->expected_ids);
1435 pTap->expected_ids = new_expected_ids;
1436 pTap->expected_ids_cnt++;
1437 break;
1438 }
1439 case NTAP_OPT_IRLEN:
1440 case NTAP_OPT_IRMASK:
1441 case NTAP_OPT_IRCAPTURE:
1442 e = Jim_GetOpt_Wide( goi, &w );
1443 if( e != JIM_OK ){
1444 Jim_SetResult_sprintf( goi->interp, "option: %s bad parameter", n->name );
1445 return e;
1446 }
1447 if( (w < 0) || (w > 0xffff) ){
1448 /* wacky value */
1449 Jim_SetResult_sprintf( goi->interp, "option: %s - wacky value: %d (0x%x)",
1450 n->name, (int)(w), (int)(w));
1451 return JIM_ERR;
1452 }
1453 switch(n->value){
1454 case NTAP_OPT_IRLEN:
1455 pTap->ir_length = w;
1456 reqbits &= (~(NTREQ_IRLEN));
1457 break;
1458 case NTAP_OPT_IRMASK:
1459 pTap->ir_capture_mask = w;
1460 reqbits &= (~(NTREQ_IRMASK));
1461 break;
1462 case NTAP_OPT_IRCAPTURE:
1463 pTap->ir_capture_value = w;
1464 reqbits &= (~(NTREQ_IRCAPTURE));
1465 break;
1466 }
1467 } /* switch(n->value) */
1468 } /* while( goi->argc ) */
1469
1470 /* Did all the required option bits get cleared? */
1471 if (0 == reqbits)
1472 {
1473 jtag_tap_init(pTap);
1474 return ERROR_OK;
1475 }
1476
1477 Jim_SetResult_sprintf(goi->interp,
1478 "newtap: %s missing required parameters",
1479 pTap->dotted_name);
1480 jtag_tap_free(pTap);
1481 return JIM_ERR;
1482 }
1483
1484 static int jim_jtag_command( Jim_Interp *interp, int argc, Jim_Obj *const *argv )
1485 {
1486 Jim_GetOptInfo goi;
1487 int e;
1488 Jim_Nvp *n;
1489 Jim_Obj *o;
1490 struct command_context_s *context;
1491
1492 enum {
1493 JTAG_CMD_INTERFACE,
1494 JTAG_CMD_INIT_RESET,
1495 JTAG_CMD_NEWTAP,
1496 JTAG_CMD_TAPENABLE,
1497 JTAG_CMD_TAPDISABLE,
1498 JTAG_CMD_TAPISENABLED,
1499 JTAG_CMD_CONFIGURE,
1500 JTAG_CMD_CGET
1501 };
1502
1503 const Jim_Nvp jtag_cmds[] = {
1504 { .name = "interface" , .value = JTAG_CMD_INTERFACE },
1505 { .name = "arp_init-reset", .value = JTAG_CMD_INIT_RESET },
1506 { .name = "newtap" , .value = JTAG_CMD_NEWTAP },
1507 { .name = "tapisenabled" , .value = JTAG_CMD_TAPISENABLED },
1508 { .name = "tapenable" , .value = JTAG_CMD_TAPENABLE },
1509 { .name = "tapdisable" , .value = JTAG_CMD_TAPDISABLE },
1510 { .name = "configure" , .value = JTAG_CMD_CONFIGURE },
1511 { .name = "cget" , .value = JTAG_CMD_CGET },
1512
1513 { .name = NULL, .value = -1 },
1514 };
1515
1516 context = Jim_GetAssocData(interp, "context");
1517 /* go past the command */
1518 Jim_GetOpt_Setup( &goi, interp, argc-1, argv+1 );
1519
1520 e = Jim_GetOpt_Nvp( &goi, jtag_cmds, &n );
1521 if( e != JIM_OK ){
1522 Jim_GetOpt_NvpUnknown( &goi, jtag_cmds, 0 );
1523 return e;
1524 }
1525 Jim_SetEmptyResult( goi.interp );
1526 switch( n->value ){
1527 case JTAG_CMD_INTERFACE:
1528 /* return the name of the interface */
1529 /* TCL code might need to know the exact type... */
1530 /* FUTURE: we allow this as a means to "set" the interface. */
1531 if( goi.argc != 0 ){
1532 Jim_WrongNumArgs( goi.interp, 1, goi.argv-1, "(no params)");
1533 return JIM_ERR;
1534 }
1535 Jim_SetResultString( goi.interp, jtag_interface->name, -1 );
1536 return JIM_OK;
1537 case JTAG_CMD_INIT_RESET:
1538 if( goi.argc != 0 ){
1539 Jim_WrongNumArgs( goi.interp, 1, goi.argv-1, "(no params)");
1540 return JIM_ERR;
1541 }
1542 e = jtag_init_reset(context);
1543 if( e != ERROR_OK ){
1544 Jim_SetResult_sprintf( goi.interp, "error: %d", e);
1545 return JIM_ERR;
1546 }
1547 return JIM_OK;
1548 case JTAG_CMD_NEWTAP:
1549 return jim_newtap_cmd( &goi );
1550 break;
1551 case JTAG_CMD_TAPISENABLED:
1552 case JTAG_CMD_TAPENABLE:
1553 case JTAG_CMD_TAPDISABLE:
1554 if( goi.argc != 1 ){
1555 Jim_SetResultString( goi.interp, "Too many parameters",-1 );
1556 return JIM_ERR;
1557 }
1558
1559 {
1560 jtag_tap_t *t;
1561 t = jtag_tap_by_jim_obj( goi.interp, goi.argv[0] );
1562 if( t == NULL ){
1563 return JIM_ERR;
1564 }
1565 switch( n->value ){
1566 case JTAG_CMD_TAPISENABLED:
1567 e = t->enabled;
1568 break;
1569 case JTAG_CMD_TAPENABLE:
1570 jtag_tap_handle_event( t, JTAG_TAP_EVENT_ENABLE);
1571 e = 1;
1572 t->enabled = e;
1573 break;
1574 case JTAG_CMD_TAPDISABLE:
1575 jtag_tap_handle_event( t, JTAG_TAP_EVENT_DISABLE);
1576 e = 0;
1577 t->enabled = e;
1578 break;
1579 }
1580 Jim_SetResult( goi.interp, Jim_NewIntObj( goi.interp, e ) );
1581 return JIM_OK;
1582 }
1583 break;
1584
1585 case JTAG_CMD_CGET:
1586 if( goi.argc < 2 ){
1587 Jim_WrongNumArgs( goi.interp, 0, NULL, "?tap-name? -option ...");
1588 return JIM_ERR;
1589 }
1590
1591 {
1592 jtag_tap_t *t;
1593
1594 Jim_GetOpt_Obj(&goi, &o);
1595 t = jtag_tap_by_jim_obj( goi.interp, o );
1596 if( t == NULL ){
1597 return JIM_ERR;
1598 }
1599
1600 goi.isconfigure = 0;
1601 return jtag_tap_configure_cmd( &goi, t);
1602 }
1603 break;
1604
1605 case JTAG_CMD_CONFIGURE:
1606 if( goi.argc < 3 ){
1607 Jim_WrongNumArgs( goi.interp, 0, NULL, "?tap-name? -option ?VALUE? ...");
1608 return JIM_ERR;
1609 }
1610
1611 {
1612 jtag_tap_t *t;
1613
1614 Jim_GetOpt_Obj(&goi, &o);
1615 t = jtag_tap_by_jim_obj( goi.interp, o );
1616 if( t == NULL ){
1617 return JIM_ERR;
1618 }
1619
1620 goi.isconfigure = 1;
1621 return jtag_tap_configure_cmd( &goi, t);
1622 }
1623 }
1624
1625 return JIM_ERR;
1626 }
1627
1628 int jtag_register_commands(struct command_context_s *cmd_ctx)
1629 {
1630 register_jim( cmd_ctx, "jtag", jim_jtag_command, "perform jtag tap actions");
1631
1632 register_command(cmd_ctx, NULL, "interface", handle_interface_command,
1633 COMMAND_CONFIG, "try to configure interface");
1634 register_command(cmd_ctx, NULL, "jtag_speed", handle_jtag_speed_command,
1635 COMMAND_ANY, "(DEPRECATED) set jtag speed (if supported)");
1636 register_command(cmd_ctx, NULL, "jtag_khz", handle_jtag_khz_command,
1637 COMMAND_ANY, "set maximum jtag speed (if supported); "
1638 "parameter is maximum khz, or 0 for adaptive clocking (RTCK).");
1639 register_command(cmd_ctx, NULL, "jtag_device", handle_jtag_device_command,
1640 COMMAND_CONFIG, "(DEPRECATED) jtag_device <ir_length> <ir_expected> <ir_mask>");
1641 register_command(cmd_ctx, NULL, "reset_config", handle_reset_config_command,
1642 COMMAND_ANY,
1643 "[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]");
1644 register_command(cmd_ctx, NULL, "jtag_nsrst_delay", handle_jtag_nsrst_delay_command,
1645 COMMAND_ANY, "jtag_nsrst_delay <ms> - delay after deasserting srst in ms");
1646 register_command(cmd_ctx, NULL, "jtag_ntrst_delay", handle_jtag_ntrst_delay_command,
1647 COMMAND_ANY, "jtag_ntrst_delay <ms> - delay after deasserting trst in ms");
1648
1649 register_command(cmd_ctx, NULL, "scan_chain", handle_scan_chain_command,
1650 COMMAND_EXEC, "print current scan chain configuration");
1651
1652 register_command(cmd_ctx, NULL, "jtag_reset", handle_jtag_reset_command,
1653 COMMAND_EXEC, "toggle reset lines <trst> <srst>");
1654 register_command(cmd_ctx, NULL, "runtest", handle_runtest_command,
1655 COMMAND_EXEC, "move to Run-Test/Idle, and execute <num_cycles>");
1656 register_command(cmd_ctx, NULL, "irscan", handle_irscan_command,
1657 COMMAND_EXEC, "execute IR scan <device> <instr> [dev2] [instr2] ...");
1658 register_jim(cmd_ctx, "drscan", Jim_Command_drscan, "execute DR scan <device> <num_bits> <value> <num_bits1> <value2> ...");
1659 register_jim(cmd_ctx, "flush_count", Jim_Command_flush_count, "returns number of times the JTAG queue has been flushed");
1660
1661 register_command(cmd_ctx, NULL, "verify_ircapture", handle_verify_ircapture_command,
1662 COMMAND_ANY, "verify value captured during Capture-IR <enable|disable>");
1663 register_command(cmd_ctx, NULL, "verify_jtag", handle_verify_jtag_command,
1664 COMMAND_ANY, "verify value capture <enable|disable>");
1665 register_command(cmd_ctx, NULL, "tms_sequence", handle_tms_sequence_command,
1666 COMMAND_ANY, "choose short(default) or long tms_sequence <short|long>");
1667 return ERROR_OK;
1668 }
1669
1670 int jtag_interface_init(struct command_context_s *cmd_ctx)
1671 {
1672 if (jtag)
1673 return ERROR_OK;
1674
1675 if (!jtag_interface)
1676 {
1677 /* nothing was previously specified by "interface" command */
1678 LOG_ERROR("JTAG interface has to be specified, see \"interface\" command");
1679 return ERROR_JTAG_INVALID_INTERFACE;
1680 }
1681 if(hasKHz)
1682 {
1683 jtag_interface->khz(jtag_get_speed_khz(), &jtag_speed);
1684 hasKHz = false;
1685 }
1686
1687 if (jtag_interface->init() != ERROR_OK)
1688 return ERROR_JTAG_INIT_FAILED;
1689
1690 jtag = jtag_interface;
1691 return ERROR_OK;
1692 }
1693
1694 static int jtag_init_inner(struct command_context_s *cmd_ctx)
1695 {
1696 jtag_tap_t *tap;
1697 int retval;
1698
1699 LOG_DEBUG("Init JTAG chain");
1700
1701 tap = jtag_tap_next_enabled(NULL);
1702 if( tap == NULL ){
1703 LOG_ERROR("There are no enabled taps?");
1704 return ERROR_JTAG_INIT_FAILED;
1705 }
1706
1707 jtag_add_tlr();
1708 if ((retval=jtag_execute_queue())!=ERROR_OK)
1709 return retval;
1710
1711 /* examine chain first, as this could discover the real chain layout */
1712 if (jtag_examine_chain() != ERROR_OK)
1713 {
1714 LOG_ERROR("trying to validate configured JTAG chain anyway...");
1715 }
1716
1717 if (jtag_validate_chain() != ERROR_OK)
1718 {
1719 LOG_WARNING("Could not validate JTAG chain, continuing anyway...");
1720 }
1721
1722 return ERROR_OK;
1723 }
1724
1725 int jtag_interface_quit(void)
1726 {
1727 if (!jtag || !jtag->quit)
1728 return ERROR_OK;
1729
1730 // close the JTAG interface
1731 int result = jtag->quit();
1732 if (ERROR_OK != result)
1733 LOG_ERROR("failed: %d", result);
1734
1735 return ERROR_OK;
1736 }
1737
1738
1739 int jtag_init_reset(struct command_context_s *cmd_ctx)
1740 {
1741 int retval;
1742
1743 if ((retval=jtag_interface_init(cmd_ctx)) != ERROR_OK)
1744 return retval;
1745
1746 LOG_DEBUG("Trying to bring the JTAG controller to life by asserting TRST / RESET");
1747
1748 /* Reset can happen after a power cycle.
1749 *
1750 * Ideally we would only assert TRST or run RESET before the target reset.
1751 *
1752 * However w/srst_pulls_trst, trst is asserted together with the target
1753 * reset whether we want it or not.
1754 *
1755 * NB! Some targets have JTAG circuitry disabled until a
1756 * trst & srst has been asserted.
1757 *
1758 * NB! here we assume nsrst/ntrst delay are sufficient!
1759 *
1760 * NB! order matters!!!! srst *can* disconnect JTAG circuitry
1761 *
1762 */
1763 jtag_add_reset(1, 0); /* RESET or TRST */
1764 if (jtag_reset_config & RESET_HAS_SRST)
1765 {
1766 jtag_add_reset(1, 1);
1767 if ((jtag_reset_config & RESET_SRST_PULLS_TRST)==0)
1768 jtag_add_reset(0, 1);
1769 }
1770 jtag_add_reset(0, 0);
1771 if ((retval = jtag_execute_queue()) != ERROR_OK)
1772 return retval;
1773
1774 /* Check that we can communication on the JTAG chain + eventually we want to
1775 * be able to perform enumeration only after OpenOCD has started
1776 * telnet and GDB server
1777 *
1778 * That would allow users to more easily perform any magic they need to before
1779 * reset happens.
1780 */
1781 return jtag_init_inner(cmd_ctx);
1782 }
1783
1784 int jtag_init(struct command_context_s *cmd_ctx)
1785 {
1786 int retval;
1787 if ((retval=jtag_interface_init(cmd_ctx)) != ERROR_OK)
1788 return retval;
1789 if (jtag_init_inner(cmd_ctx)==ERROR_OK)
1790 {
1791 return ERROR_OK;
1792 }
1793 return jtag_init_reset(cmd_ctx);
1794 }
1795
1796 void jtag_set_speed_khz(unsigned khz)
1797 {
1798 speed_khz = khz;
1799 }
1800 unsigned jtag_get_speed_khz(void)
1801 {
1802 return speed_khz;
1803 }
1804
1805 static int default_khz(int khz, int *jtag_speed)
1806 {
1807 LOG_ERROR("Translation from khz to jtag_speed not implemented");
1808 return ERROR_FAIL;
1809 }
1810
1811 static int default_speed_div(int speed, int *khz)
1812 {
1813 LOG_ERROR("Translation from jtag_speed to khz not implemented");
1814 return ERROR_FAIL;
1815 }
1816
1817 static int default_power_dropout(int *dropout)
1818 {
1819 *dropout=0; /* by default we can't detect power dropout */
1820 return ERROR_OK;
1821 }
1822
1823 static int default_srst_asserted(int *srst_asserted)
1824 {
1825 *srst_asserted=0; /* by default we can't detect srst asserted */
1826 return ERROR_OK;
1827 }
1828
1829 static int handle_interface_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1830 {
1831 int i;
1832 int retval;
1833
1834 /* check whether the interface is already configured */
1835 if (jtag_interface)
1836 {
1837 LOG_WARNING("Interface already configured, ignoring");
1838 return ERROR_OK;
1839 }
1840
1841 /* interface name is a mandatory argument */
1842 if (argc < 1 || args[0][0] == '\0')
1843 {
1844 return ERROR_COMMAND_SYNTAX_ERROR;
1845 }
1846
1847 for (i=0; jtag_interfaces[i]; i++)
1848 {
1849 if (strcmp(args[0], jtag_interfaces[i]->name) == 0)
1850 {
1851 if ((retval = jtag_interfaces[i]->register_commands(cmd_ctx)) != ERROR_OK)
1852 {
1853 return retval;
1854 }
1855
1856 jtag_interface = jtag_interfaces[i];
1857
1858 if (jtag_interface->khz == NULL)
1859 {
1860 jtag_interface->khz = default_khz;
1861 }
1862 if (jtag_interface->speed_div == NULL)
1863 {
1864 jtag_interface->speed_div = default_speed_div;
1865 }
1866 if (jtag_interface->power_dropout == NULL)
1867 {
1868 jtag_interface->power_dropout = default_power_dropout;
1869 }
1870 if (jtag_interface->srst_asserted == NULL)
1871 {
1872 jtag_interface->srst_asserted = default_srst_asserted;
1873 }
1874
1875 return ERROR_OK;
1876 }
1877 }
1878
1879 /* no valid interface was found (i.e. the configuration option,
1880 * didn't match one of the compiled-in interfaces
1881 */
1882 LOG_ERROR("No valid jtag interface found (%s)", args[0]);
1883 LOG_ERROR("compiled-in jtag interfaces:");
1884 for (i = 0; jtag_interfaces[i]; i++)
1885 {
1886 LOG_ERROR("%i: %s", i, jtag_interfaces[i]->name);
1887 }
1888
1889 return ERROR_JTAG_INVALID_INTERFACE;
1890 }
1891
1892 static int handle_jtag_device_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1893 {
1894 int e;
1895 char buf[1024];
1896 Jim_Obj *newargs[ 10 ];
1897 /*
1898 * CONVERT SYNTAX
1899 * argv[-1] = command
1900 * argv[ 0] = ir length
1901 * argv[ 1] = ir capture
1902 * argv[ 2] = ir mask
1903 * argv[ 3] = not actually used by anything but in the docs
1904 */
1905
1906 if( argc < 4 ){
1907 command_print( cmd_ctx, "OLD DEPRECATED SYNTAX: Please use the NEW syntax");
1908 return ERROR_OK;
1909 }
1910 command_print( cmd_ctx, "OLD SYNTAX: DEPRECATED - translating to new syntax");
1911 command_print( cmd_ctx, "jtag newtap CHIP TAP -irlen %s -ircapture %s -irvalue %s",
1912 args[0],
1913 args[1],
1914 args[2] );
1915 command_print( cmd_ctx, "Example: STM32 has 2 taps, the cortexM3(len4) + boundaryscan(len5)");
1916 command_print( cmd_ctx, "jtag newtap stm32 cortexm3 ....., thus creating the tap: \"stm32.cortexm3\"");
1917 command_print( cmd_ctx, "jtag newtap stm32 boundary ....., and the tap: \"stm32.boundary\"");
1918 command_print( cmd_ctx, "And then refer to the taps by the dotted name.");
1919
1920 newargs[0] = Jim_NewStringObj( interp, "jtag", -1 );
1921 newargs[1] = Jim_NewStringObj( interp, "newtap", -1 );
1922 sprintf( buf, "chip%d", jtag_tap_count() );
1923 newargs[2] = Jim_NewStringObj( interp, buf, -1 );
1924 sprintf( buf, "tap%d", jtag_tap_count() );
1925 newargs[3] = Jim_NewStringObj( interp, buf, -1 );
1926 newargs[4] = Jim_NewStringObj( interp, "-irlen", -1 );
1927 newargs[5] = Jim_NewStringObj( interp, args[0], -1 );
1928 newargs[6] = Jim_NewStringObj( interp, "-ircapture", -1 );
1929 newargs[7] = Jim_NewStringObj( interp, args[1], -1 );
1930 newargs[8] = Jim_NewStringObj( interp, "-irmask", -1 );
1931 newargs[9] = Jim_NewStringObj( interp, args[2], -1 );
1932
1933 command_print( cmd_ctx, "NEW COMMAND:");
1934 sprintf( buf, "%s %s %s %s %s %s %s %s %s %s",
1935 Jim_GetString( newargs[0], NULL ),
1936 Jim_GetString( newargs[1], NULL ),
1937 Jim_GetString( newargs[2], NULL ),
1938 Jim_GetString( newargs[3], NULL ),
1939 Jim_GetString( newargs[4], NULL ),
1940 Jim_GetString( newargs[5], NULL ),
1941 Jim_GetString( newargs[6], NULL ),
1942 Jim_GetString( newargs[7], NULL ),
1943 Jim_GetString( newargs[8], NULL ),
1944 Jim_GetString( newargs[9], NULL ) );
1945
1946 e = jim_jtag_command( interp, 10, newargs );
1947 if( e != JIM_OK ){
1948 command_print( cmd_ctx, "%s", Jim_GetString( Jim_GetResult(interp), NULL ) );
1949 }
1950 return e;
1951 }
1952
1953 static int handle_scan_chain_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1954 {
1955 jtag_tap_t *tap;
1956
1957 tap = jtag_all_taps();
1958 command_print(cmd_ctx, " TapName | Enabled | IdCode Expected IrLen IrCap IrMask Instr ");
1959 command_print(cmd_ctx, "---|--------------------|---------|------------|------------|------|------|------|---------");
1960
1961 while( tap ){
1962 u32 expected, expected_mask, cur_instr, ii;
1963 expected = buf_get_u32(tap->expected, 0, tap->ir_length);
1964 expected_mask = buf_get_u32(tap->expected_mask, 0, tap->ir_length);
1965 cur_instr = buf_get_u32(tap->cur_instr, 0, tap->ir_length);
1966
1967 command_print(cmd_ctx,
1968 "%2d | %-18s | %c | 0x%08x | 0x%08x | 0x%02x | 0x%02x | 0x%02x | 0x%02x",
1969 tap->abs_chain_position,
1970 tap->dotted_name,
1971 tap->enabled ? 'Y' : 'n',
1972 tap->idcode,
1973 (tap->expected_ids_cnt > 0 ? tap->expected_ids[0] : 0),
1974 tap->ir_length,
1975 expected,
1976 expected_mask,
1977 cur_instr);
1978
1979 for (ii = 1; ii < tap->expected_ids_cnt; ii++) {
1980 command_print(cmd_ctx, " | | | | 0x%08x | | | | ",
1981 tap->expected_ids[ii]);
1982 }
1983
1984 tap = tap->next_tap;
1985 }
1986
1987 return ERROR_OK;
1988 }
1989
1990 static int handle_reset_config_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1991 {
1992 int new_cfg = 0;
1993 int mask = 0;
1994
1995 if (argc < 1)
1996 return ERROR_COMMAND_SYNTAX_ERROR;
1997
1998 /* Original versions cared about the order of these tokens:
1999 * reset_config signals [combination [trst_type [srst_type]]]
2000 * They also clobbered the previous configuration even on error.
2001 *
2002 * Here we don't care about the order, and only change values
2003 * which have been explicitly specified.
2004 */
2005 for (; argc; argc--, args++) {
2006 int tmp = 0;
2007 int m;
2008
2009 /* signals */
2010 m = RESET_HAS_TRST | RESET_HAS_SRST;
2011 if (strcmp(*args, "none") == 0)
2012 tmp = RESET_NONE;
2013 else if (strcmp(*args, "trst_only") == 0)
2014 tmp = RESET_HAS_TRST;
2015 else if (strcmp(*args, "srst_only") == 0)
2016 tmp = RESET_HAS_SRST;
2017 else if (strcmp(*args, "trst_and_srst") == 0)
2018 tmp = RESET_HAS_TRST | RESET_HAS_SRST;
2019 else
2020 m = 0;
2021 if (mask & m) {
2022 LOG_ERROR("extra reset_config %s spec (%s)",
2023 "signal", *args);
2024 return ERROR_INVALID_ARGUMENTS;
2025 }
2026 if (m)
2027 goto next;
2028
2029 /* combination (options for broken wiring) */
2030 m = RESET_SRST_PULLS_TRST | RESET_TRST_PULLS_SRST;
2031 if (strcmp(*args, "separate") == 0)
2032 /* separate reset lines - default */;
2033 else if (strcmp(*args, "srst_pulls_trst") == 0)
2034 tmp |= RESET_SRST_PULLS_TRST;
2035 else if (strcmp(*args, "trst_pulls_srst") == 0)
2036 tmp |= RESET_TRST_PULLS_SRST;
2037 else if (strcmp(*args, "combined") == 0)
2038 tmp |= RESET_SRST_PULLS_TRST | RESET_TRST_PULLS_SRST;
2039 else
2040 m = 0;
2041 if (mask & m) {
2042 LOG_ERROR("extra reset_config %s spec (%s)",
2043 "combination", *args);
2044 return ERROR_INVALID_ARGUMENTS;
2045 }
2046 if (m)
2047 goto next;
2048
2049 /* trst_type (NOP without HAS_TRST) */
2050 m = RESET_TRST_OPEN_DRAIN;
2051 if (strcmp(*args, "trst_open_drain") == 0)
2052 tmp |= RESET_TRST_OPEN_DRAIN;
2053 else if (strcmp(*args, "trst_push_pull") == 0)
2054 /* push/pull from adapter - default */;
2055 else
2056 m = 0;
2057 if (mask & m) {
2058 LOG_ERROR("extra reset_config %s spec (%s)",
2059 "trst_type", *args);
2060 return ERROR_INVALID_ARGUMENTS;
2061 }
2062 if (m)
2063 goto next;
2064
2065 /* srst_type (NOP without HAS_SRST) */
2066 m |= RESET_SRST_PUSH_PULL;
2067 if (strcmp(*args, "srst_push_pull") == 0)
2068 tmp |= RESET_SRST_PUSH_PULL;
2069 else if (strcmp(*args, "srst_open_drain") == 0)
2070 /* open drain from adapter - default */;
2071 else
2072 m = 0;
2073 if (mask & m) {
2074 LOG_ERROR("extra reset_config %s spec (%s)",
2075 "srst_type", *args);
2076 return ERROR_INVALID_ARGUMENTS;
2077 }
2078 if (m)
2079 goto next;
2080
2081 /* caller provided nonsense; fail */
2082 LOG_ERROR("unknown reset_config flag (%s)", *args);
2083 return ERROR_INVALID_ARGUMENTS;
2084
2085 next:
2086 /* Remember the bits which were specified (mask)
2087 * and their new values (new_cfg).
2088 */
2089 mask |= m;
2090 new_cfg |= tmp;
2091 }
2092
2093 /* clear previous values of those bits, save new values */
2094 jtag_reset_config &= ~mask;
2095 jtag_reset_config |= new_cfg;
2096
2097 return ERROR_OK;
2098 }
2099
2100 static int handle_jtag_nsrst_delay_command(struct command_context_s *cmd_ctx,
2101 char *cmd, char **args, int argc)
2102 {
2103 if (argc > 1)
2104 return ERROR_COMMAND_SYNTAX_ERROR;
2105 if (argc == 1)
2106 jtag_set_nsrst_delay(strtoul(args[0], NULL, 0));
2107 command_print(cmd_ctx, "jtag_nsrst_delay: %u", jtag_get_nsrst_delay());
2108 return ERROR_OK;
2109 }
2110
2111 static int handle_jtag_ntrst_delay_command(struct command_context_s *cmd_ctx,
2112 char *cmd, char **args, int argc)
2113 {
2114 if (argc > 1)
2115 return ERROR_COMMAND_SYNTAX_ERROR;
2116 if (argc == 1)
2117 jtag_set_ntrst_delay(strtoul(args[0], NULL, 0));
2118 command_print(cmd_ctx, "jtag_ntrst_delay: %u", jtag_get_ntrst_delay());
2119 return ERROR_OK;
2120 }
2121
2122 static int handle_jtag_speed_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2123 {
2124 int retval = ERROR_OK;
2125
2126 if (argc > 1)
2127 return ERROR_COMMAND_SYNTAX_ERROR;
2128 if (argc == 1)
2129 {
2130 LOG_DEBUG("handle jtag speed");
2131
2132 int cur_speed = 0;
2133 cur_speed = jtag_speed = strtoul(args[0], NULL, 0);
2134
2135 /* this command can be called during CONFIG,
2136 * in which case jtag isn't initialized */
2137 if (jtag)
2138 retval = jtag->speed(cur_speed);
2139 }
2140 command_print(cmd_ctx, "jtag_speed: %d", jtag_speed);
2141
2142 return retval;
2143 }
2144
2145 static int handle_jtag_khz_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2146 {
2147 if (argc > 1)
2148 return ERROR_COMMAND_SYNTAX_ERROR;
2149
2150 int retval = ERROR_OK;
2151 int cur_speed = 0;
2152 if (argc == 1)
2153 {
2154 LOG_DEBUG("handle jtag khz");
2155
2156 jtag_set_speed_khz(strtoul(args[0], NULL, 0));
2157 if (jtag != NULL)
2158 {
2159 LOG_DEBUG("have interface set up");
2160 int speed_div1;
2161 retval = jtag->khz(jtag_get_speed_khz(), &speed_div1);
2162 if (ERROR_OK != retval)
2163 {
2164 jtag_set_speed_khz(0);
2165 return retval;
2166 }
2167 cur_speed = jtag_speed = speed_div1;
2168
2169 retval = jtag->speed(cur_speed);
2170 }
2171 else
2172 hasKHz = true;
2173 }
2174
2175 cur_speed = jtag_get_speed_khz();
2176 if (jtag != NULL)
2177 {
2178 retval = jtag->speed_div(jtag_speed, &cur_speed);
2179 if (ERROR_OK != retval)
2180 return retval;
2181 }
2182
2183 if (cur_speed)
2184 command_print(cmd_ctx, "%d kHz", cur_speed);
2185 else
2186 command_print(cmd_ctx, "RCLK - adaptive");
2187 return retval;
2188
2189 }
2190
2191 static int handle_jtag_reset_command(struct command_context_s *cmd_ctx,
2192 char *cmd, char **args, int argc)
2193 {
2194 if (argc != 2)
2195 return ERROR_COMMAND_SYNTAX_ERROR;
2196
2197 int trst = -1;
2198 if (args[0][0] == '1')
2199 trst = 1;
2200 else if (args[0][0] == '0')
2201 trst = 0;
2202 else
2203 return ERROR_COMMAND_SYNTAX_ERROR;
2204
2205 int srst = -1;
2206 if (args[1][0] == '1')
2207 srst = 1;
2208 else if (args[1][0] == '0')
2209 srst = 0;
2210 else
2211 return ERROR_COMMAND_SYNTAX_ERROR;
2212
2213 if (jtag_interface_init(cmd_ctx) != ERROR_OK)
2214 return ERROR_JTAG_INIT_FAILED;
2215
2216 jtag_add_reset(trst, srst);
2217 jtag_execute_queue();
2218
2219 return ERROR_OK;
2220 }
2221
2222 static int handle_runtest_command(struct command_context_s *cmd_ctx,
2223 char *cmd, char **args, int argc)
2224 {
2225 if (argc != 1)
2226 return ERROR_COMMAND_SYNTAX_ERROR;
2227
2228 jtag_add_runtest(strtol(args[0], NULL, 0), jtag_get_end_state());
2229 jtag_execute_queue();
2230
2231 return ERROR_OK;
2232 }
2233
2234 /*
2235 * For "irscan" or "drscan" commands, the "end" (really, "next") state
2236 * should be stable ... and *NOT* a shift state, otherwise free-running
2237 * jtag clocks could change the values latched by the update state.
2238 */
2239 static bool scan_is_safe(tap_state_t state)
2240 {
2241 switch (state)
2242 {
2243 case TAP_RESET:
2244 case TAP_IDLE:
2245 case TAP_DRPAUSE:
2246 case TAP_IRPAUSE:
2247 return true;
2248 default:
2249 return false;
2250 }
2251 }
2252
2253
2254 static int handle_irscan_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2255 {
2256 int i;
2257 scan_field_t *fields;
2258 jtag_tap_t *tap;
2259 tap_state_t endstate;
2260
2261 if ((argc < 2) || (argc % 2))
2262 {
2263 return ERROR_COMMAND_SYNTAX_ERROR;
2264 }
2265
2266 /* optional "-endstate" "statename" at the end of the arguments,
2267 * so that e.g. IRPAUSE can let us load the data register before
2268 * entering RUN/IDLE to execute the instruction we load here.
2269 */
2270 endstate = TAP_IDLE;
2271
2272 if( argc >= 4 ){
2273 /* have at least one pair of numbers. */
2274 /* is last pair the magic text? */
2275 if( 0 == strcmp( "-endstate", args[ argc - 2 ] ) ){
2276 const char *cpA;
2277 const char *cpS;
2278 cpA = args[ argc-1 ];
2279 for( endstate = 0 ; endstate < TAP_NUM_STATES ; endstate++ ){
2280 cpS = tap_state_name( endstate );
2281 if( 0 == strcmp( cpA, cpS ) ){
2282 break;
2283 }
2284 }
2285 if( endstate >= TAP_NUM_STATES ){
2286 return ERROR_COMMAND_SYNTAX_ERROR;
2287 } else {
2288 if (!scan_is_safe(endstate))
2289 LOG_WARNING("irscan with unsafe "
2290 "endstate \"%s\"", cpA);
2291 /* found - remove the last 2 args */
2292 argc -= 2;
2293 }
2294 }
2295 }
2296
2297 int num_fields = argc / 2;
2298
2299 fields = malloc(sizeof(scan_field_t) * num_fields);
2300
2301 for (i = 0; i < num_fields; i++)
2302 {
2303 tap = jtag_tap_by_string( args[i*2] );
2304 if (tap==NULL)
2305 {
2306 command_print( cmd_ctx, "Tap: %s unknown", args[i*2] );
2307 return ERROR_FAIL;
2308 }
2309 int field_size = tap->ir_length;
2310 fields[i].tap = tap;
2311 fields[i].num_bits = field_size;
2312 fields[i].out_value = malloc(CEIL(field_size, 8));
2313 buf_set_u32(fields[i].out_value, 0, field_size, strtoul(args[i*2+1], NULL, 0));
2314 fields[i].in_value = NULL;
2315 }
2316
2317 /* did we have an endstate? */
2318 jtag_add_ir_scan(num_fields, fields, endstate);
2319
2320 int retval=jtag_execute_queue();
2321
2322 for (i = 0; i < num_fields; i++)
2323 free(fields[i].out_value);
2324
2325 free (fields);
2326
2327 return retval;
2328 }
2329
2330 static int Jim_Command_drscan(Jim_Interp *interp, int argc, Jim_Obj *const *args)
2331 {
2332 int retval;
2333 scan_field_t *fields;
2334 int num_fields;
2335 int field_count = 0;
2336 int i, e;
2337 jtag_tap_t *tap;
2338 tap_state_t endstate;
2339
2340 /* args[1] = device
2341 * args[2] = num_bits
2342 * args[3] = hex string
2343 * ... repeat num bits and hex string ...
2344 *
2345 * .. optionally:
2346 * args[N-2] = "-endstate"
2347 * args[N-1] = statename
2348 */
2349 if ((argc < 4) || ((argc % 2)!=0))
2350 {
2351 Jim_WrongNumArgs(interp, 1, args, "wrong arguments");
2352 return JIM_ERR;
2353 }
2354
2355 endstate = TAP_IDLE;
2356
2357 /* validate arguments as numbers */
2358 e = JIM_OK;
2359 for (i = 2; i < argc; i+=2)
2360 {
2361 long bits;
2362 const char *cp;
2363
2364 e = Jim_GetLong(interp, args[i], &bits);
2365 /* If valid - try next arg */
2366 if( e == JIM_OK ){
2367 continue;
2368 }
2369
2370 /* Not valid.. are we at the end? */
2371 if ( ((i+2) != argc) ){
2372 /* nope, then error */
2373 return e;
2374 }
2375
2376 /* it could be: "-endstate FOO"
2377 * e.g. DRPAUSE so we can issue more instructions
2378 * before entering RUN/IDLE and executing them.
2379 */
2380
2381 /* get arg as a string. */
2382 cp = Jim_GetString( args[i], NULL );
2383 /* is it the magic? */
2384 if( 0 == strcmp( "-endstate", cp ) ){
2385 /* is the statename valid? */
2386 cp = Jim_GetString( args[i+1], NULL );
2387
2388 /* see if it is a valid state name */
2389 endstate = tap_state_by_name(cp);
2390 if( endstate < 0 ){
2391 /* update the error message */
2392 Jim_SetResult_sprintf(interp,"endstate: %s invalid", cp );
2393 } else {
2394 if (!scan_is_safe(endstate))
2395 LOG_WARNING("drscan with unsafe "
2396 "endstate \"%s\"", cp);
2397
2398 /* valid - so clear the error */
2399 e = JIM_OK;
2400 /* and remove the last 2 args */
2401 argc -= 2;
2402 }
2403 }
2404
2405 /* Still an error? */
2406 if( e != JIM_OK ){
2407 return e; /* too bad */
2408 }
2409 } /* validate args */
2410
2411 tap = jtag_tap_by_jim_obj( interp, args[1] );
2412 if( tap == NULL ){
2413 return JIM_ERR;
2414 }
2415
2416 num_fields=(argc-2)/2;
2417 fields = malloc(sizeof(scan_field_t) * num_fields);
2418 for (i = 2; i < argc; i+=2)
2419 {
2420 long bits;
2421 int len;
2422 const char *str;
2423
2424 Jim_GetLong(interp, args[i], &bits);
2425 str = Jim_GetString(args[i+1], &len);
2426
2427 fields[field_count].tap = tap;
2428 fields[field_count].num_bits = bits;
2429 fields[field_count].out_value = malloc(CEIL(bits, 8));
2430 str_to_buf(str, len, fields[field_count].out_value, bits, 0);
2431 fields[field_count].in_value = fields[field_count].out_value;
2432 field_count++;
2433 }
2434
2435 jtag_add_dr_scan(num_fields, fields, endstate);
2436
2437 retval = jtag_execute_queue();
2438 if (retval != ERROR_OK)
2439 {
2440 Jim_SetResultString(interp, "drscan: jtag execute failed",-1);
2441 return JIM_ERR;
2442 }
2443
2444 field_count=0;
2445 Jim_Obj *list = Jim_NewListObj(interp, NULL, 0);
2446 for (i = 2; i < argc; i+=2)
2447 {
2448 long bits;
2449 char *str;
2450
2451 Jim_GetLong(interp, args[i], &bits);
2452 str = buf_to_str(fields[field_count].in_value, bits, 16);
2453 free(fields[field_count].out_value);
2454
2455 Jim_ListAppendElement(interp, list, Jim_NewStringObj(interp, str, strlen(str)));
2456 free(str);
2457 field_count++;
2458 }
2459
2460 Jim_SetResult(interp, list);
2461
2462 free(fields);
2463
2464 return JIM_OK;
2465 }
2466
2467
2468 static int Jim_Command_flush_count(Jim_Interp *interp, int argc, Jim_Obj *const *args)
2469 {
2470 Jim_SetResult(interp, Jim_NewIntObj(interp, jtag_get_flush_queue_count()));
2471
2472 return JIM_OK;
2473 }
2474
2475
2476 static int handle_verify_ircapture_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2477 {
2478 if (argc == 1)
2479 {
2480 if (strcmp(args[0], "enable") == 0)
2481 {
2482 jtag_verify_capture_ir = 1;
2483 }
2484 else if (strcmp(args[0], "disable") == 0)
2485 {
2486 jtag_verify_capture_ir = 0;
2487 } else
2488 {
2489 return ERROR_COMMAND_SYNTAX_ERROR;
2490 }
2491 } else if (argc != 0)
2492 {
2493 return ERROR_COMMAND_SYNTAX_ERROR;
2494 }
2495
2496 command_print(cmd_ctx, "verify Capture-IR is %s", (jtag_verify_capture_ir) ? "enabled": "disabled");
2497
2498 return ERROR_OK;
2499 }
2500
2501 void jtag_set_verify(bool enable)
2502 {
2503 jtag_verify = enable;
2504 }
2505
2506 bool jtag_will_verify()
2507 {
2508 return jtag_verify;
2509 }
2510
2511 static int handle_verify_jtag_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2512 {
2513 if (argc > 1)
2514 return ERROR_COMMAND_SYNTAX_ERROR;
2515
2516 if (argc == 1)
2517 {
2518 if (strcmp(args[0], "enable") == 0)
2519 jtag_set_verify(true);
2520 else if (strcmp(args[0], "disable") == 0)
2521 jtag_set_verify(false);
2522 else
2523 return ERROR_COMMAND_SYNTAX_ERROR;
2524 }
2525
2526 const char *status = jtag_will_verify() ? "enabled": "disabled";
2527 command_print(cmd_ctx, "verify jtag capture is %s", status);
2528
2529 return ERROR_OK;
2530 }
2531
2532
2533 int jtag_power_dropout(int *dropout)
2534 {
2535 return jtag->power_dropout(dropout);
2536 }
2537
2538 int jtag_srst_asserted(int *srst_asserted)
2539 {
2540 return jtag->srst_asserted(srst_asserted);
2541 }
2542
2543 void jtag_tap_handle_event( jtag_tap_t * tap, enum jtag_tap_event e)
2544 {
2545 jtag_tap_event_action_t * jteap;
2546 int done;
2547
2548 jteap = tap->event_action;
2549
2550 done = 0;
2551 while (jteap) {
2552 if (jteap->event == e) {
2553 done = 1;
2554 LOG_DEBUG( "JTAG tap: %s event: %d (%s) action: %s\n",
2555 tap->dotted_name,
2556 e,
2557 Jim_Nvp_value2name_simple(nvp_jtag_tap_event, e)->name,
2558 Jim_GetString(jteap->body, NULL) );
2559 if (Jim_EvalObj(interp, jteap->body) != JIM_OK) {
2560 Jim_PrintErrorMessage(interp);
2561 }
2562 }
2563
2564 jteap = jteap->next;
2565 }
2566
2567 if (!done) {
2568 LOG_DEBUG( "event %d %s - no action",
2569 e,
2570 Jim_Nvp_value2name_simple( nvp_jtag_tap_event, e)->name);
2571 }
2572 }
2573
2574 static int handle_tms_sequence_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2575 {
2576 if (argc > 1)
2577 return ERROR_COMMAND_SYNTAX_ERROR;
2578
2579 if (argc == 1)
2580 {
2581 bool use_new_table;
2582 if (strcmp(args[0], "short") == 0)
2583 use_new_table = true;
2584 else if (strcmp(args[0], "long") == 0)
2585 use_new_table = false;
2586 else
2587 return ERROR_COMMAND_SYNTAX_ERROR;
2588
2589 tap_use_new_tms_table(use_new_table);
2590 }
2591
2592 command_print(cmd_ctx, "tms sequence is %s",
2593 tap_uses_new_tms_table() ? "short": "long");
2594
2595 return ERROR_OK;
2596 }
2597
2598 /**
2599 * Function jtag_add_statemove
2600 * moves from the current state to the goal \a state. This needs
2601 * to be handled according to the xsvf spec, see the XSTATE command
2602 * description.
2603 */
2604 int jtag_add_statemove(tap_state_t goal_state)
2605 {
2606 int retval = ERROR_OK;
2607
2608 tap_state_t moves[8];
2609 tap_state_t cur_state = cmd_queue_cur_state;
2610 int i;
2611 int tms_bits;
2612 int tms_count;
2613
2614 LOG_DEBUG( "cur_state=%s goal_state=%s",
2615 tap_state_name(cur_state),
2616 tap_state_name(goal_state) );
2617
2618
2619 /* From the XSVF spec, pertaining to XSTATE:
2620
2621 For special states known as stable states (Test-Logic-Reset,
2622 Run-Test/Idle, Pause-DR, Pause- IR), an XSVF interpreter follows
2623 predefined TAP state paths when the starting state is a stable state and
2624 when the XSTATE specifies a new stable state (see the STATE command in
2625 the [Ref 5] for the TAP state paths between stable states). For
2626 non-stable states, XSTATE should specify a state that is only one TAP
2627 state transition distance from the current TAP state to avoid undefined
2628 TAP state paths. A sequence of multiple XSTATE commands can be issued to
2629 transition the TAP through a specific state path.
2630 */
2631
2632 if (goal_state==cur_state )
2633 ; /* nothing to do */
2634
2635 else if( goal_state==TAP_RESET )
2636 {
2637 jtag_add_tlr();
2638 }
2639
2640 else if( tap_is_state_stable(cur_state) && tap_is_state_stable(goal_state) )
2641 {
2642 /* note: unless tms_bits holds a path that agrees with [Ref 5] in above
2643 spec, then this code is not fully conformant to the xsvf spec. This
2644 puts a burden on tap_get_tms_path() function from the xsvf spec.
2645 If in doubt, you should confirm that that burden is being met.
2646 */
2647
2648 tms_bits = tap_get_tms_path(cur_state, goal_state);
2649 tms_count = tap_get_tms_path_len(cur_state, goal_state);
2650
2651 assert( (unsigned) tms_count < DIM(moves) );
2652
2653 for (i=0; i<tms_count; i++, tms_bits>>=1)
2654 {
2655 bool bit = tms_bits & 1;
2656
2657 cur_state = tap_state_transition(cur_state, bit);
2658 moves[i] = cur_state;
2659 }
2660
2661 jtag_add_pathmove(tms_count, moves);
2662 }
2663
2664 /* else state must be immediately reachable in one clock cycle, and does not
2665 need to be a stable state.
2666 */
2667 else if( tap_state_transition(cur_state, true) == goal_state
2668 || tap_state_transition(cur_state, false) == goal_state )
2669 {
2670 /* move a single state */
2671 moves[0] = goal_state;
2672 jtag_add_pathmove( 1, moves );
2673 }
2674
2675 else
2676 {
2677 retval = ERROR_FAIL;
2678 }
2679
2680 return retval;
2681 }
2682
2683 void jtag_set_nsrst_delay(unsigned delay)
2684 {
2685 jtag_nsrst_delay = delay;
2686 }
2687 unsigned jtag_get_nsrst_delay(void)
2688 {
2689 return jtag_nsrst_delay;
2690 }
2691 void jtag_set_ntrst_delay(unsigned delay)
2692 {
2693 jtag_ntrst_delay = delay;
2694 }
2695 unsigned jtag_get_ntrst_delay(void)
2696 {
2697 return jtag_ntrst_delay;
2698 }
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