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Simplify jtag_execute_queue:
[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_num_fields, const scan_field_t *in_fields, tap_state_t state)
432 {
433 int retval;
434 jtag_prelude(state);
435
436 retval=interface_jtag_add_ir_scan(in_num_fields, in_fields, state);
437 if (retval!=ERROR_OK)
438 jtag_error=retval;
439
440 }
441
442
443 /**
444 * Generate an IR SCAN with a list of scan fields with one entry for each enabled TAP.
445 *
446 * If the input field list contains an instruction value for a TAP then that is used
447 * otherwise the TAP is set to bypass.
448 *
449 * TAPs for which no fields are passed are marked as bypassed for subsequent DR SCANs.
450 *
451 */
452 void jtag_add_ir_scan(int in_num_fields, scan_field_t *in_fields, tap_state_t state)
453 {
454 if (jtag_verify&&jtag_verify_capture_ir)
455 {
456 /* 8 x 32 bit id's is enough for all invocations */
457
458 for (int j = 0; j < in_num_fields; j++)
459 {
460 /* if we are to run a verification of the ir scan, we need to get the input back.
461 * We may have to allocate space if the caller didn't ask for the input back.
462 */
463 in_fields[j].check_value=in_fields[j].tap->expected;
464 in_fields[j].check_mask=in_fields[j].tap->expected_mask;
465 }
466 jtag_add_scan_check(jtag_add_ir_scan_noverify, in_num_fields, in_fields, state);
467 } else
468 {
469 jtag_add_ir_scan_noverify(in_num_fields, in_fields, state);
470 }
471 }
472
473 /**
474 * Duplicate the scan fields passed into the function into an IR SCAN command
475 *
476 * This function assumes that the caller handles extra fields for bypassed TAPs
477 *
478 */
479 void jtag_add_plain_ir_scan(int in_num_fields, const scan_field_t *in_fields, tap_state_t state)
480 {
481 int retval;
482
483 jtag_prelude(state);
484
485 retval=interface_jtag_add_plain_ir_scan(in_num_fields, in_fields, state);
486 if (retval!=ERROR_OK)
487 jtag_error=retval;
488 }
489
490 void jtag_add_callback(jtag_callback1_t f, u8 *in)
491 {
492 interface_jtag_add_callback(f, in);
493 }
494
495 void jtag_add_callback4(jtag_callback_t f, u8 *in,
496 jtag_callback_data_t data1, jtag_callback_data_t data2,
497 jtag_callback_data_t data3)
498 {
499 interface_jtag_add_callback4(f, in, data1, data2, data3);
500 }
501
502 int jtag_check_value_inner(u8 *captured, u8 *in_check_value, u8 *in_check_mask, int num_bits);
503
504 static int jtag_check_value_mask_callback(u8 *in, jtag_callback_data_t data1, jtag_callback_data_t data2, jtag_callback_data_t data3)
505 {
506 return jtag_check_value_inner(in, (u8 *)data1, (u8 *)data2, (int)data3);
507 }
508
509 static void jtag_add_scan_check(void (*jtag_add_scan)(int in_num_fields, const scan_field_t *in_fields, tap_state_t state),
510 int in_num_fields, scan_field_t *in_fields, tap_state_t state)
511 {
512 for (int i = 0; i < in_num_fields; i++)
513 {
514 struct scan_field_s *field = &in_fields[i];
515 field->allocated = 0;
516 field->modified = 0;
517 if (field->check_value || field->in_value)
518 continue;
519 interface_jtag_add_scan_check_alloc(field);
520 field->modified = 1;
521 }
522
523 jtag_add_scan(in_num_fields, in_fields, state);
524
525 for (int i = 0; i < in_num_fields; i++)
526 {
527 if ((in_fields[i].check_value != NULL) && (in_fields[i].in_value != NULL))
528 {
529 /* this is synchronous for a minidriver */
530 jtag_add_callback4(jtag_check_value_mask_callback, in_fields[i].in_value,
531 (jtag_callback_data_t)in_fields[i].check_value,
532 (jtag_callback_data_t)in_fields[i].check_mask,
533 (jtag_callback_data_t)in_fields[i].num_bits);
534 }
535 if (in_fields[i].allocated)
536 {
537 free(in_fields[i].in_value);
538 }
539 if (in_fields[i].modified)
540 {
541 in_fields[i].in_value = NULL;
542 }
543 }
544 }
545
546 void jtag_add_dr_scan_check(int in_num_fields, scan_field_t *in_fields, tap_state_t state)
547 {
548 if (jtag_verify)
549 {
550 jtag_add_scan_check(jtag_add_dr_scan, in_num_fields, in_fields, state);
551 } else
552 {
553 jtag_add_dr_scan(in_num_fields, in_fields, state);
554 }
555 }
556
557
558 /**
559 * Generate a DR SCAN using the fields passed to the function
560 *
561 * For not bypassed TAPs the function checks in_fields and uses fields specified there.
562 * For bypassed TAPs the function generates a dummy 1bit field.
563 *
564 * The bypass status of TAPs is set by jtag_add_ir_scan().
565 *
566 */
567 void jtag_add_dr_scan(int in_num_fields, const scan_field_t *in_fields, tap_state_t state)
568 {
569 int retval;
570
571 jtag_prelude(state);
572
573 retval=interface_jtag_add_dr_scan(in_num_fields, in_fields, state);
574 if (retval!=ERROR_OK)
575 jtag_error=retval;
576 }
577
578
579
580 /**
581 * Duplicate the scan fields passed into the function into a DR SCAN command
582 *
583 * This function assumes that the caller handles extra fields for bypassed TAPs
584 *
585 */
586 void jtag_add_plain_dr_scan(int in_num_fields, const scan_field_t *in_fields, tap_state_t state)
587 {
588 int retval;
589
590 jtag_prelude(state);
591
592 retval=interface_jtag_add_plain_dr_scan(in_num_fields, in_fields, state);
593 if (retval!=ERROR_OK)
594 jtag_error=retval;
595 }
596
597 void jtag_add_dr_out(jtag_tap_t* tap,
598 int num_fields, const int* num_bits, const u32* value,
599 tap_state_t end_state)
600 {
601 assert(end_state != TAP_INVALID);
602
603 cmd_queue_cur_state = end_state;
604
605 interface_jtag_add_dr_out(tap,
606 num_fields, num_bits, value,
607 end_state);
608 }
609
610 void jtag_add_tlr(void)
611 {
612 jtag_prelude(TAP_RESET);
613
614 int retval;
615 retval=interface_jtag_add_tlr();
616 if (retval!=ERROR_OK)
617 jtag_error=retval;
618
619 jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
620 }
621
622 void jtag_add_pathmove(int num_states, const tap_state_t *path)
623 {
624 tap_state_t cur_state = cmd_queue_cur_state;
625 int i;
626 int retval;
627
628 /* the last state has to be a stable state */
629 if (!tap_is_state_stable(path[num_states - 1]))
630 {
631 LOG_ERROR("BUG: TAP path doesn't finish in a stable state");
632 exit(-1);
633 }
634
635 for (i=0; i<num_states; i++)
636 {
637 if (path[i] == TAP_RESET)
638 {
639 LOG_ERROR("BUG: TAP_RESET is not a valid state for pathmove sequences");
640 exit(-1);
641 }
642
643 if ( tap_state_transition(cur_state, true) != path[i]
644 && tap_state_transition(cur_state, false) != path[i])
645 {
646 LOG_ERROR("BUG: %s -> %s isn't a valid TAP transition", tap_state_name(cur_state), tap_state_name(path[i]));
647 exit(-1);
648 }
649 cur_state = path[i];
650 }
651
652 jtag_checks();
653
654 retval = interface_jtag_add_pathmove(num_states, path);
655 cmd_queue_cur_state = path[num_states - 1];
656 if (retval!=ERROR_OK)
657 jtag_error=retval;
658 }
659
660 void jtag_add_runtest(int num_cycles, tap_state_t state)
661 {
662 int retval;
663
664 jtag_prelude(state);
665
666 /* executed by sw or hw fifo */
667 retval=interface_jtag_add_runtest(num_cycles, state);
668 if (retval!=ERROR_OK)
669 jtag_error=retval;
670 }
671
672
673 void jtag_add_clocks( int num_cycles )
674 {
675 int retval;
676
677 if( !tap_is_state_stable(cmd_queue_cur_state) )
678 {
679 LOG_ERROR( "jtag_add_clocks() was called with TAP in non-stable state \"%s\"",
680 tap_state_name(cmd_queue_cur_state) );
681 jtag_error = ERROR_JTAG_NOT_STABLE_STATE;
682 return;
683 }
684
685 if( num_cycles > 0 )
686 {
687 jtag_checks();
688
689 retval = interface_jtag_add_clocks(num_cycles);
690 if (retval != ERROR_OK)
691 jtag_error=retval;
692 }
693 }
694
695 void jtag_add_reset(int req_tlr_or_trst, int req_srst)
696 {
697 int trst_with_tlr = 0;
698 int retval;
699
700 /* FIX!!! there are *many* different cases here. A better
701 * approach is needed for legal combinations of transitions...
702 */
703 if ((jtag_reset_config & RESET_HAS_SRST)&&
704 (jtag_reset_config & RESET_HAS_TRST)&&
705 ((jtag_reset_config & RESET_SRST_PULLS_TRST)==0))
706 {
707 if (((req_tlr_or_trst&&!jtag_trst)||
708 (!req_tlr_or_trst&&jtag_trst))&&
709 ((req_srst&&!jtag_srst)||
710 (!req_srst&&jtag_srst)))
711 {
712 /* FIX!!! srst_pulls_trst allows 1,1 => 0,0 transition.... */
713 //LOG_ERROR("BUG: transition of req_tlr_or_trst and req_srst in the same jtag_add_reset() call is undefined");
714 }
715 }
716
717 /* Make sure that jtag_reset_config allows the requested reset */
718 /* if SRST pulls TRST, we can't fulfill srst == 1 with trst == 0 */
719 if (((jtag_reset_config & RESET_SRST_PULLS_TRST) && (req_srst == 1)) && (!req_tlr_or_trst))
720 {
721 LOG_ERROR("BUG: requested reset would assert trst");
722 jtag_error=ERROR_FAIL;
723 return;
724 }
725
726 /* if TRST pulls SRST, we reset with TAP T-L-R */
727 if (((jtag_reset_config & RESET_TRST_PULLS_SRST) && (req_tlr_or_trst)) && (req_srst == 0))
728 {
729 trst_with_tlr = 1;
730 }
731
732 if (req_srst && !(jtag_reset_config & RESET_HAS_SRST))
733 {
734 LOG_ERROR("BUG: requested SRST assertion, but the current configuration doesn't support this");
735 jtag_error=ERROR_FAIL;
736 return;
737 }
738
739 if (req_tlr_or_trst)
740 {
741 if (!trst_with_tlr && (jtag_reset_config & RESET_HAS_TRST))
742 {
743 jtag_trst = 1;
744 } else
745 {
746 trst_with_tlr = 1;
747 }
748 } else
749 {
750 jtag_trst = 0;
751 }
752
753 jtag_srst = req_srst;
754
755 retval = interface_jtag_add_reset(jtag_trst, jtag_srst);
756 if (retval!=ERROR_OK)
757 {
758 jtag_error=retval;
759 return;
760 }
761 jtag_execute_queue();
762
763 if (jtag_srst)
764 {
765 LOG_DEBUG("SRST line asserted");
766 }
767 else
768 {
769 LOG_DEBUG("SRST line released");
770 if (jtag_nsrst_delay)
771 jtag_add_sleep(jtag_nsrst_delay * 1000);
772 }
773
774 if (trst_with_tlr)
775 {
776 LOG_DEBUG("JTAG reset with RESET instead of TRST");
777 jtag_set_end_state(TAP_RESET);
778 jtag_add_tlr();
779 return;
780 }
781
782 if (jtag_trst)
783 {
784 /* we just asserted nTRST, so we're now in Test-Logic-Reset,
785 * and inform possible listeners about this
786 */
787 LOG_DEBUG("TRST line asserted");
788 tap_set_state(TAP_RESET);
789 jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
790 }
791 else
792 {
793 if (jtag_ntrst_delay)
794 jtag_add_sleep(jtag_ntrst_delay * 1000);
795 }
796 }
797
798 tap_state_t jtag_set_end_state(tap_state_t state)
799 {
800 if ((state == TAP_DRSHIFT)||(state == TAP_IRSHIFT))
801 {
802 LOG_ERROR("BUG: TAP_DRSHIFT/IRSHIFT can't be end state. Calling code should use a larger scan field");
803 }
804
805 if (state!=TAP_INVALID)
806 cmd_queue_end_state = state;
807 return cmd_queue_end_state;
808 }
809
810 tap_state_t jtag_get_end_state(void)
811 {
812 return cmd_queue_end_state;
813 }
814
815 void jtag_add_sleep(u32 us)
816 {
817 keep_alive(); /* we might be running on a very slow JTAG clk */
818 int retval=interface_jtag_add_sleep(us);
819 if (retval!=ERROR_OK)
820 jtag_error=retval;
821 return;
822 }
823
824 int jtag_check_value_inner(u8 *captured, u8 *in_check_value, u8 *in_check_mask, int num_bits)
825 {
826 int retval = ERROR_OK;
827
828 int compare_failed = 0;
829
830 if (in_check_mask)
831 compare_failed = buf_cmp_mask(captured, in_check_value, in_check_mask, num_bits);
832 else
833 compare_failed = buf_cmp(captured, in_check_value, num_bits);
834
835 if (compare_failed){
836 /* An error handler could have caught the failing check
837 * only report a problem when there wasn't a handler, or if the handler
838 * acknowledged the error
839 */
840 /*
841 LOG_WARNING("TAP %s:",
842 jtag_tap_name(field->tap));
843 */
844 if (compare_failed)
845 {
846 char *captured_char = buf_to_str(captured, (num_bits > DEBUG_JTAG_IOZ) ? DEBUG_JTAG_IOZ : num_bits, 16);
847 char *in_check_value_char = buf_to_str(in_check_value, (num_bits > DEBUG_JTAG_IOZ) ? DEBUG_JTAG_IOZ : num_bits, 16);
848
849 if (in_check_mask)
850 {
851 char *in_check_mask_char;
852 in_check_mask_char = buf_to_str(in_check_mask, (num_bits > DEBUG_JTAG_IOZ) ? DEBUG_JTAG_IOZ : num_bits, 16);
853 LOG_WARNING("value captured during scan didn't pass the requested check:");
854 LOG_WARNING("captured: 0x%s check_value: 0x%s check_mask: 0x%s",
855 captured_char, in_check_value_char, in_check_mask_char);
856 free(in_check_mask_char);
857 }
858 else
859 {
860 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);
861 }
862
863 free(captured_char);
864 free(in_check_value_char);
865
866 retval = ERROR_JTAG_QUEUE_FAILED;
867 }
868
869 }
870 return retval;
871 }
872
873 void jtag_check_value_mask(scan_field_t *field, u8 *value, u8 *mask)
874 {
875 assert(field->in_value != NULL);
876
877 if (value==NULL)
878 {
879 /* no checking to do */
880 return;
881 }
882
883 jtag_execute_queue_noclear();
884
885 int retval=jtag_check_value_inner(field->in_value, value, mask, field->num_bits);
886 jtag_set_error(retval);
887 }
888
889
890
891 int default_interface_jtag_execute_queue(void)
892 {
893 if (NULL == jtag)
894 {
895 LOG_ERROR("No JTAG interface configured yet. "
896 "Issue 'init' command in startup scripts "
897 "before communicating with targets.");
898 return ERROR_FAIL;
899 }
900
901 return jtag->execute_queue();
902 }
903
904 void jtag_execute_queue_noclear(void)
905 {
906 jtag_flush_queue_count++;
907 jtag_set_error(interface_jtag_execute_queue());
908 }
909
910 int jtag_get_flush_queue_count(void)
911 {
912 return jtag_flush_queue_count;
913 }
914
915 int jtag_execute_queue(void)
916 {
917 jtag_execute_queue_noclear();
918 return jtag_error_clear();
919 }
920
921 static int jtag_reset_callback(enum jtag_event event, void *priv)
922 {
923 jtag_tap_t *tap = priv;
924
925 LOG_DEBUG("-");
926
927 if (event == JTAG_TRST_ASSERTED)
928 {
929 buf_set_ones(tap->cur_instr, tap->ir_length);
930 tap->bypass = 1;
931 }
932
933 return ERROR_OK;
934 }
935
936 void jtag_sleep(u32 us)
937 {
938 alive_sleep(us/1000);
939 }
940
941 /// maximum number of JTAG devices expected in the chain
942 #define JTAG_MAX_CHAIN_SIZE 20
943
944 #define EXTRACT_MFG(X) (((X) & 0xffe) >> 1)
945 #define EXTRACT_PART(X) (((X) & 0xffff000) >> 12)
946 #define EXTRACT_VER(X) (((X) & 0xf0000000) >> 28)
947
948 static int jtag_examine_chain_execute(u8 *idcode_buffer, unsigned num_idcode)
949 {
950 scan_field_t field = {
951 .tap = NULL,
952 .num_bits = num_idcode * 32,
953 .out_value = idcode_buffer,
954 .in_value = idcode_buffer,
955 };
956
957 // initialize to the end of chain ID value
958 for (unsigned i = 0; i < JTAG_MAX_CHAIN_SIZE; i++)
959 buf_set_u32(idcode_buffer, i * 32, 32, 0x000000FF);
960
961 jtag_add_plain_dr_scan(1, &field, TAP_RESET);
962 return jtag_execute_queue();
963 }
964
965 static bool jtag_examine_chain_check(u8 *idcodes, unsigned count)
966 {
967 u8 zero_check = 0x0;
968 u8 one_check = 0xff;
969
970 for (unsigned i = 0; i < count * 4; i++)
971 {
972 zero_check |= idcodes[i];
973 one_check &= idcodes[i];
974 }
975
976 /* if there wasn't a single non-zero bit or if all bits were one,
977 * the scan is not valid */
978 if (zero_check == 0x00 || one_check == 0xff)
979 {
980 LOG_ERROR("JTAG communication failure: check connection, "
981 "JTAG interface, target power etc.");
982 return false;
983 }
984 return true;
985 }
986
987 static void jtag_examine_chain_display(enum log_levels level, const char *msg,
988 const char *name, u32 idcode)
989 {
990 log_printf_lf(level, __FILE__, __LINE__, __FUNCTION__,
991 "JTAG tap: %s %16.16s: 0x%08x "
992 "(mfg: 0x%3.3x, part: 0x%4.4x, ver: 0x%1.1x)",
993 name, msg, idcode,
994 EXTRACT_MFG(idcode), EXTRACT_PART(idcode), EXTRACT_VER(idcode) );
995 }
996
997 static bool jtag_idcode_is_final(u32 idcode)
998 {
999 return idcode == 0x000000FF || idcode == 0xFFFFFFFF;
1000 }
1001
1002 /**
1003 * This helper checks that remaining bits in the examined chain data are
1004 * all as expected, but a single JTAG device requires only 64 bits to be
1005 * read back correctly. This can help identify and diagnose problems
1006 * with the JTAG chain earlier, gives more helpful/explicit error messages.
1007 */
1008 static void jtag_examine_chain_end(u8 *idcodes, unsigned count, unsigned max)
1009 {
1010 bool triggered = false;
1011 for ( ; count < max - 31; count += 32)
1012 {
1013 u32 idcode = buf_get_u32(idcodes, count, 32);
1014 // do not trigger the warning if the data looks good
1015 if (!triggered && jtag_idcode_is_final(idcode))
1016 continue;
1017 LOG_WARNING("Unexpected idcode after end of chain: %d 0x%08x",
1018 count, idcode);
1019 triggered = true;
1020 }
1021 }
1022
1023 static bool jtag_examine_chain_match_tap(const struct jtag_tap_s *tap)
1024 {
1025 if (0 == tap->expected_ids_cnt)
1026 {
1027 /// @todo Enable LOG_INFO to ask for reports about unknown TAP IDs.
1028 #if 0
1029 LOG_INFO("Uknown JTAG TAP ID: 0x%08x", tap->idcode)
1030 LOG_INFO("Please report the chip name and reported ID code to the openocd project");
1031 #endif
1032 return true;
1033 }
1034
1035 /* Loop over the expected identification codes and test for a match */
1036 u8 ii;
1037 for (ii = 0; ii < tap->expected_ids_cnt; ii++)
1038 {
1039 if (tap->idcode == tap->expected_ids[ii])
1040 break;
1041 }
1042
1043 /* If none of the expected ids matched, log an error */
1044 if (ii != tap->expected_ids_cnt)
1045 {
1046 LOG_INFO("JTAG Tap/device matched");
1047 return true;
1048 }
1049 jtag_examine_chain_display(LOG_LVL_ERROR, "got",
1050 tap->dotted_name, tap->idcode);
1051 for (ii = 0; ii < tap->expected_ids_cnt; ii++)
1052 {
1053 char msg[32];
1054 snprintf(msg, sizeof(msg), "expected %hhu of %hhu",
1055 ii + 1, tap->expected_ids_cnt);
1056 jtag_examine_chain_display(LOG_LVL_ERROR, msg,
1057 tap->dotted_name, tap->expected_ids[ii]);
1058 }
1059 return false;
1060 }
1061
1062 /* Try to examine chain layout according to IEEE 1149.1 §12
1063 */
1064 static int jtag_examine_chain(void)
1065 {
1066 u8 idcode_buffer[JTAG_MAX_CHAIN_SIZE * 4];
1067 unsigned device_count = 0;
1068
1069 jtag_examine_chain_execute(idcode_buffer, JTAG_MAX_CHAIN_SIZE);
1070
1071 if (!jtag_examine_chain_check(idcode_buffer, JTAG_MAX_CHAIN_SIZE))
1072 return ERROR_JTAG_INIT_FAILED;
1073
1074 /* point at the 1st tap */
1075 jtag_tap_t *tap = jtag_tap_next_enabled(NULL);
1076 if (tap == NULL)
1077 {
1078 LOG_ERROR("JTAG: No taps enabled?");
1079 return ERROR_JTAG_INIT_FAILED;
1080 }
1081
1082 for (unsigned bit_count = 0; bit_count < (JTAG_MAX_CHAIN_SIZE * 32) - 31;)
1083 {
1084 u32 idcode = buf_get_u32(idcode_buffer, bit_count, 32);
1085 if ((idcode & 1) == 0)
1086 {
1087 /* LSB must not be 0, this indicates a device in bypass */
1088 LOG_WARNING("Tap/Device does not have IDCODE");
1089 idcode = 0;
1090
1091 bit_count += 1;
1092 }
1093 else
1094 {
1095 /*
1096 * End of chain (invalid manufacturer ID) some devices, such
1097 * as AVR will output all 1's instead of TDI input value at
1098 * end of chain.
1099 */
1100 if (jtag_idcode_is_final(idcode))
1101 {
1102 jtag_examine_chain_end(idcode_buffer,
1103 bit_count + 32, JTAG_MAX_CHAIN_SIZE * 32);
1104 break;
1105 }
1106
1107 jtag_examine_chain_display(LOG_LVL_INFO, "tap/device found",
1108 tap ? tap->dotted_name : "(not-named)",
1109 idcode);
1110
1111 bit_count += 32;
1112 }
1113 device_count++;
1114 if (!tap)
1115 continue;
1116
1117 tap->idcode = idcode;
1118
1119 // ensure the TAP ID does matches what was expected
1120 if (!jtag_examine_chain_match_tap(tap))
1121 return ERROR_JTAG_INIT_FAILED;
1122
1123 tap = jtag_tap_next_enabled(tap);
1124 }
1125
1126 /* see if number of discovered devices matches configuration */
1127 if (device_count != jtag_tap_count_enabled())
1128 {
1129 LOG_ERROR("number of discovered devices in JTAG chain (%i) "
1130 "does not match (enabled) configuration (%i), total taps: %d",
1131 device_count, jtag_tap_count_enabled(), jtag_tap_count());
1132 LOG_ERROR("check the config file and ensure proper JTAG communication"
1133 " (connections, speed, ...)");
1134 return ERROR_JTAG_INIT_FAILED;
1135 }
1136
1137 return ERROR_OK;
1138 }
1139
1140 static int jtag_validate_chain(void)
1141 {
1142 jtag_tap_t *tap;
1143 int total_ir_length = 0;
1144 u8 *ir_test = NULL;
1145 scan_field_t field;
1146 int chain_pos = 0;
1147
1148 tap = NULL;
1149 total_ir_length = 0;
1150 for(;;){
1151 tap = jtag_tap_next_enabled(tap);
1152 if( tap == NULL ){
1153 break;
1154 }
1155 total_ir_length += tap->ir_length;
1156 }
1157
1158 total_ir_length += 2;
1159 ir_test = malloc(CEIL(total_ir_length, 8));
1160 buf_set_ones(ir_test, total_ir_length);
1161
1162 field.tap = NULL;
1163 field.num_bits = total_ir_length;
1164 field.out_value = ir_test;
1165 field.in_value = ir_test;
1166
1167
1168 jtag_add_plain_ir_scan(1, &field, TAP_RESET);
1169 jtag_execute_queue();
1170
1171 tap = NULL;
1172 chain_pos = 0;
1173 int val;
1174 for(;;){
1175 tap = jtag_tap_next_enabled(tap);
1176 if( tap == NULL ){
1177 break;
1178 }
1179
1180 val = buf_get_u32(ir_test, chain_pos, 2);
1181 if (val != 0x1)
1182 {
1183 char *cbuf = buf_to_str(ir_test, total_ir_length, 16);
1184 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);
1185 free(cbuf);
1186 free(ir_test);
1187 return ERROR_JTAG_INIT_FAILED;
1188 }
1189 chain_pos += tap->ir_length;
1190 }
1191
1192 val = buf_get_u32(ir_test, chain_pos, 2);
1193 if (val != 0x3)
1194 {
1195 char *cbuf = buf_to_str(ir_test, total_ir_length, 16);
1196 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);
1197 free(cbuf);
1198 free(ir_test);
1199 return ERROR_JTAG_INIT_FAILED;
1200 }
1201
1202 free(ir_test);
1203
1204 return ERROR_OK;
1205 }
1206
1207 enum jtag_tap_cfg_param {
1208 JCFG_EVENT
1209 };
1210
1211 static Jim_Nvp nvp_config_opts[] = {
1212 { .name = "-event", .value = JCFG_EVENT },
1213
1214 { .name = NULL, .value = -1 }
1215 };
1216
1217 static int jtag_tap_configure_cmd( Jim_GetOptInfo *goi, jtag_tap_t * tap)
1218 {
1219 Jim_Nvp *n;
1220 Jim_Obj *o;
1221 int e;
1222
1223 /* parse config or cget options */
1224 while (goi->argc > 0) {
1225 Jim_SetEmptyResult (goi->interp);
1226
1227 e = Jim_GetOpt_Nvp(goi, nvp_config_opts, &n);
1228 if (e != JIM_OK) {
1229 Jim_GetOpt_NvpUnknown(goi, nvp_config_opts, 0);
1230 return e;
1231 }
1232
1233 switch (n->value) {
1234 case JCFG_EVENT:
1235 if (goi->argc == 0) {
1236 Jim_WrongNumArgs( goi->interp, goi->argc, goi->argv, "-event ?event-name? ..." );
1237 return JIM_ERR;
1238 }
1239
1240 e = Jim_GetOpt_Nvp( goi, nvp_jtag_tap_event, &n );
1241 if (e != JIM_OK) {
1242 Jim_GetOpt_NvpUnknown(goi, nvp_jtag_tap_event, 1);
1243 return e;
1244 }
1245
1246 if (goi->isconfigure) {
1247 if (goi->argc != 1) {
1248 Jim_WrongNumArgs(goi->interp, goi->argc, goi->argv, "-event ?event-name? ?EVENT-BODY?");
1249 return JIM_ERR;
1250 }
1251 } else {
1252 if (goi->argc != 0) {
1253 Jim_WrongNumArgs(goi->interp, goi->argc, goi->argv, "-event ?event-name?");
1254 return JIM_ERR;
1255 }
1256 }
1257
1258 {
1259 jtag_tap_event_action_t *jteap;
1260
1261 jteap = tap->event_action;
1262 /* replace existing? */
1263 while (jteap) {
1264 if (jteap->event == (enum jtag_tap_event)n->value) {
1265 break;
1266 }
1267 jteap = jteap->next;
1268 }
1269
1270 if (goi->isconfigure) {
1271 if (jteap == NULL) {
1272 /* create new */
1273 jteap = calloc(1, sizeof (*jteap));
1274 }
1275 jteap->event = n->value;
1276 Jim_GetOpt_Obj( goi, &o);
1277 if (jteap->body) {
1278 Jim_DecrRefCount(interp, jteap->body);
1279 }
1280 jteap->body = Jim_DuplicateObj(goi->interp, o);
1281 Jim_IncrRefCount(jteap->body);
1282
1283 /* add to head of event list */
1284 jteap->next = tap->event_action;
1285 tap->event_action = jteap;
1286 Jim_SetEmptyResult(goi->interp);
1287 } else {
1288 /* get */
1289 if (jteap == NULL) {
1290 Jim_SetEmptyResult(goi->interp);
1291 } else {
1292 Jim_SetResult(goi->interp, Jim_DuplicateObj(goi->interp, jteap->body));
1293 }
1294 }
1295 }
1296 /* loop for more */
1297 break;
1298 }
1299 } /* while (goi->argc) */
1300
1301 return JIM_OK;
1302 }
1303
1304
1305 static void jtag_tap_init(jtag_tap_t *tap)
1306 {
1307 assert(0 != tap->ir_length);
1308
1309 tap->expected = malloc(tap->ir_length);
1310 tap->expected_mask = malloc(tap->ir_length);
1311 tap->cur_instr = malloc(tap->ir_length);
1312
1313 buf_set_u32(tap->expected, 0, tap->ir_length, tap->ir_capture_value);
1314 buf_set_u32(tap->expected_mask, 0, tap->ir_length, tap->ir_capture_mask);
1315 buf_set_ones(tap->cur_instr, tap->ir_length);
1316
1317 // place TAP in bypass mode
1318 tap->bypass = 1;
1319 // register the reset callback for the TAP
1320 jtag_register_event_callback(&jtag_reset_callback, tap);
1321
1322 LOG_DEBUG("Created Tap: %s @ abs position %d, "
1323 "irlen %d, capture: 0x%x mask: 0x%x", tap->dotted_name,
1324 tap->abs_chain_position, tap->ir_length,
1325 tap->ir_capture_value, tap->ir_capture_mask);
1326 jtag_tap_add(tap);
1327 }
1328
1329 static void jtag_tap_free(jtag_tap_t *tap)
1330 {
1331 /// @todo is anything missing? no memory leaks please
1332 free((void *)tap->expected_ids);
1333 free((void *)tap->chip);
1334 free((void *)tap->tapname);
1335 free((void *)tap->dotted_name);
1336 free(tap);
1337 }
1338
1339 static int jim_newtap_cmd( Jim_GetOptInfo *goi )
1340 {
1341 jtag_tap_t *pTap;
1342 jim_wide w;
1343 int x;
1344 int e;
1345 int reqbits;
1346 Jim_Nvp *n;
1347 char *cp;
1348 const Jim_Nvp opts[] = {
1349 #define NTAP_OPT_IRLEN 0
1350 { .name = "-irlen" , .value = NTAP_OPT_IRLEN },
1351 #define NTAP_OPT_IRMASK 1
1352 { .name = "-irmask" , .value = NTAP_OPT_IRMASK },
1353 #define NTAP_OPT_IRCAPTURE 2
1354 { .name = "-ircapture" , .value = NTAP_OPT_IRCAPTURE },
1355 #define NTAP_OPT_ENABLED 3
1356 { .name = "-enable" , .value = NTAP_OPT_ENABLED },
1357 #define NTAP_OPT_DISABLED 4
1358 { .name = "-disable" , .value = NTAP_OPT_DISABLED },
1359 #define NTAP_OPT_EXPECTED_ID 5
1360 { .name = "-expected-id" , .value = NTAP_OPT_EXPECTED_ID },
1361 { .name = NULL , .value = -1 },
1362 };
1363
1364 pTap = malloc( sizeof(jtag_tap_t) );
1365 memset( pTap, 0, sizeof(*pTap) );
1366 if( !pTap ){
1367 Jim_SetResult_sprintf( goi->interp, "no memory");
1368 return JIM_ERR;
1369 }
1370 /*
1371 * we expect CHIP + TAP + OPTIONS
1372 * */
1373 if( goi->argc < 3 ){
1374 Jim_SetResult_sprintf(goi->interp, "Missing CHIP TAP OPTIONS ....");
1375 return JIM_ERR;
1376 }
1377 Jim_GetOpt_String( goi, &cp, NULL );
1378 pTap->chip = strdup(cp);
1379
1380 Jim_GetOpt_String( goi, &cp, NULL );
1381 pTap->tapname = strdup(cp);
1382
1383 /* name + dot + name + null */
1384 x = strlen(pTap->chip) + 1 + strlen(pTap->tapname) + 1;
1385 cp = malloc( x );
1386 sprintf( cp, "%s.%s", pTap->chip, pTap->tapname );
1387 pTap->dotted_name = cp;
1388
1389 LOG_DEBUG("Creating New Tap, Chip: %s, Tap: %s, Dotted: %s, %d params",
1390 pTap->chip, pTap->tapname, pTap->dotted_name, goi->argc);
1391
1392 /* default is enabled */
1393 pTap->enabled = 1;
1394
1395 /* deal with options */
1396 #define NTREQ_IRLEN 1
1397 #define NTREQ_IRCAPTURE 2
1398 #define NTREQ_IRMASK 4
1399
1400 /* clear them as we find them */
1401 reqbits = (NTREQ_IRLEN | NTREQ_IRCAPTURE | NTREQ_IRMASK);
1402
1403 while( goi->argc ){
1404 e = Jim_GetOpt_Nvp( goi, opts, &n );
1405 if( e != JIM_OK ){
1406 Jim_GetOpt_NvpUnknown( goi, opts, 0 );
1407 return e;
1408 }
1409 LOG_DEBUG("Processing option: %s", n->name );
1410 switch( n->value ){
1411 case NTAP_OPT_ENABLED:
1412 pTap->enabled = 1;
1413 break;
1414 case NTAP_OPT_DISABLED:
1415 pTap->enabled = 0;
1416 break;
1417 case NTAP_OPT_EXPECTED_ID:
1418 {
1419 u32 *new_expected_ids;
1420
1421 e = Jim_GetOpt_Wide( goi, &w );
1422 if( e != JIM_OK) {
1423 Jim_SetResult_sprintf(goi->interp, "option: %s bad parameter", n->name);
1424 return e;
1425 }
1426
1427 new_expected_ids = malloc(sizeof(u32) * (pTap->expected_ids_cnt + 1));
1428 if (new_expected_ids == NULL) {
1429 Jim_SetResult_sprintf( goi->interp, "no memory");
1430 return JIM_ERR;
1431 }
1432
1433 memcpy(new_expected_ids, pTap->expected_ids, sizeof(u32) * pTap->expected_ids_cnt);
1434
1435 new_expected_ids[pTap->expected_ids_cnt] = w;
1436
1437 free(pTap->expected_ids);
1438 pTap->expected_ids = new_expected_ids;
1439 pTap->expected_ids_cnt++;
1440 break;
1441 }
1442 case NTAP_OPT_IRLEN:
1443 case NTAP_OPT_IRMASK:
1444 case NTAP_OPT_IRCAPTURE:
1445 e = Jim_GetOpt_Wide( goi, &w );
1446 if( e != JIM_OK ){
1447 Jim_SetResult_sprintf( goi->interp, "option: %s bad parameter", n->name );
1448 return e;
1449 }
1450 if( (w < 0) || (w > 0xffff) ){
1451 /* wacky value */
1452 Jim_SetResult_sprintf( goi->interp, "option: %s - wacky value: %d (0x%x)",
1453 n->name, (int)(w), (int)(w));
1454 return JIM_ERR;
1455 }
1456 switch(n->value){
1457 case NTAP_OPT_IRLEN:
1458 pTap->ir_length = w;
1459 reqbits &= (~(NTREQ_IRLEN));
1460 break;
1461 case NTAP_OPT_IRMASK:
1462 pTap->ir_capture_mask = w;
1463 reqbits &= (~(NTREQ_IRMASK));
1464 break;
1465 case NTAP_OPT_IRCAPTURE:
1466 pTap->ir_capture_value = w;
1467 reqbits &= (~(NTREQ_IRCAPTURE));
1468 break;
1469 }
1470 } /* switch(n->value) */
1471 } /* while( goi->argc ) */
1472
1473 /* Did all the required option bits get cleared? */
1474 if (0 == reqbits)
1475 {
1476 jtag_tap_init(pTap);
1477 return ERROR_OK;
1478 }
1479
1480 Jim_SetResult_sprintf(goi->interp,
1481 "newtap: %s missing required parameters",
1482 pTap->dotted_name);
1483 jtag_tap_free(pTap);
1484 return JIM_ERR;
1485 }
1486
1487 static int jim_jtag_command( Jim_Interp *interp, int argc, Jim_Obj *const *argv )
1488 {
1489 Jim_GetOptInfo goi;
1490 int e;
1491 Jim_Nvp *n;
1492 Jim_Obj *o;
1493 struct command_context_s *context;
1494
1495 enum {
1496 JTAG_CMD_INTERFACE,
1497 JTAG_CMD_INIT_RESET,
1498 JTAG_CMD_NEWTAP,
1499 JTAG_CMD_TAPENABLE,
1500 JTAG_CMD_TAPDISABLE,
1501 JTAG_CMD_TAPISENABLED,
1502 JTAG_CMD_CONFIGURE,
1503 JTAG_CMD_CGET
1504 };
1505
1506 const Jim_Nvp jtag_cmds[] = {
1507 { .name = "interface" , .value = JTAG_CMD_INTERFACE },
1508 { .name = "arp_init-reset", .value = JTAG_CMD_INIT_RESET },
1509 { .name = "newtap" , .value = JTAG_CMD_NEWTAP },
1510 { .name = "tapisenabled" , .value = JTAG_CMD_TAPISENABLED },
1511 { .name = "tapenable" , .value = JTAG_CMD_TAPENABLE },
1512 { .name = "tapdisable" , .value = JTAG_CMD_TAPDISABLE },
1513 { .name = "configure" , .value = JTAG_CMD_CONFIGURE },
1514 { .name = "cget" , .value = JTAG_CMD_CGET },
1515
1516 { .name = NULL, .value = -1 },
1517 };
1518
1519 context = Jim_GetAssocData(interp, "context");
1520 /* go past the command */
1521 Jim_GetOpt_Setup( &goi, interp, argc-1, argv+1 );
1522
1523 e = Jim_GetOpt_Nvp( &goi, jtag_cmds, &n );
1524 if( e != JIM_OK ){
1525 Jim_GetOpt_NvpUnknown( &goi, jtag_cmds, 0 );
1526 return e;
1527 }
1528 Jim_SetEmptyResult( goi.interp );
1529 switch( n->value ){
1530 case JTAG_CMD_INTERFACE:
1531 /* return the name of the interface */
1532 /* TCL code might need to know the exact type... */
1533 /* FUTURE: we allow this as a means to "set" the interface. */
1534 if( goi.argc != 0 ){
1535 Jim_WrongNumArgs( goi.interp, 1, goi.argv-1, "(no params)");
1536 return JIM_ERR;
1537 }
1538 Jim_SetResultString( goi.interp, jtag_interface->name, -1 );
1539 return JIM_OK;
1540 case JTAG_CMD_INIT_RESET:
1541 if( goi.argc != 0 ){
1542 Jim_WrongNumArgs( goi.interp, 1, goi.argv-1, "(no params)");
1543 return JIM_ERR;
1544 }
1545 e = jtag_init_reset(context);
1546 if( e != ERROR_OK ){
1547 Jim_SetResult_sprintf( goi.interp, "error: %d", e);
1548 return JIM_ERR;
1549 }
1550 return JIM_OK;
1551 case JTAG_CMD_NEWTAP:
1552 return jim_newtap_cmd( &goi );
1553 break;
1554 case JTAG_CMD_TAPISENABLED:
1555 case JTAG_CMD_TAPENABLE:
1556 case JTAG_CMD_TAPDISABLE:
1557 if( goi.argc != 1 ){
1558 Jim_SetResultString( goi.interp, "Too many parameters",-1 );
1559 return JIM_ERR;
1560 }
1561
1562 {
1563 jtag_tap_t *t;
1564 t = jtag_tap_by_jim_obj( goi.interp, goi.argv[0] );
1565 if( t == NULL ){
1566 return JIM_ERR;
1567 }
1568 switch( n->value ){
1569 case JTAG_CMD_TAPISENABLED:
1570 e = t->enabled;
1571 break;
1572 case JTAG_CMD_TAPENABLE:
1573 jtag_tap_handle_event( t, JTAG_TAP_EVENT_ENABLE);
1574 e = 1;
1575 t->enabled = e;
1576 break;
1577 case JTAG_CMD_TAPDISABLE:
1578 jtag_tap_handle_event( t, JTAG_TAP_EVENT_DISABLE);
1579 e = 0;
1580 t->enabled = e;
1581 break;
1582 }
1583 Jim_SetResult( goi.interp, Jim_NewIntObj( goi.interp, e ) );
1584 return JIM_OK;
1585 }
1586 break;
1587
1588 case JTAG_CMD_CGET:
1589 if( goi.argc < 2 ){
1590 Jim_WrongNumArgs( goi.interp, 0, NULL, "?tap-name? -option ...");
1591 return JIM_ERR;
1592 }
1593
1594 {
1595 jtag_tap_t *t;
1596
1597 Jim_GetOpt_Obj(&goi, &o);
1598 t = jtag_tap_by_jim_obj( goi.interp, o );
1599 if( t == NULL ){
1600 return JIM_ERR;
1601 }
1602
1603 goi.isconfigure = 0;
1604 return jtag_tap_configure_cmd( &goi, t);
1605 }
1606 break;
1607
1608 case JTAG_CMD_CONFIGURE:
1609 if( goi.argc < 3 ){
1610 Jim_WrongNumArgs( goi.interp, 0, NULL, "?tap-name? -option ?VALUE? ...");
1611 return JIM_ERR;
1612 }
1613
1614 {
1615 jtag_tap_t *t;
1616
1617 Jim_GetOpt_Obj(&goi, &o);
1618 t = jtag_tap_by_jim_obj( goi.interp, o );
1619 if( t == NULL ){
1620 return JIM_ERR;
1621 }
1622
1623 goi.isconfigure = 1;
1624 return jtag_tap_configure_cmd( &goi, t);
1625 }
1626 }
1627
1628 return JIM_ERR;
1629 }
1630
1631 int jtag_register_commands(struct command_context_s *cmd_ctx)
1632 {
1633 register_jim( cmd_ctx, "jtag", jim_jtag_command, "perform jtag tap actions");
1634
1635 register_command(cmd_ctx, NULL, "interface", handle_interface_command,
1636 COMMAND_CONFIG, "try to configure interface");
1637 register_command(cmd_ctx, NULL, "jtag_speed", handle_jtag_speed_command,
1638 COMMAND_ANY, "(DEPRECATED) set jtag speed (if supported)");
1639 register_command(cmd_ctx, NULL, "jtag_khz", handle_jtag_khz_command,
1640 COMMAND_ANY, "set maximum jtag speed (if supported); "
1641 "parameter is maximum khz, or 0 for adaptive clocking (RTCK).");
1642 register_command(cmd_ctx, NULL, "jtag_device", handle_jtag_device_command,
1643 COMMAND_CONFIG, "(DEPRECATED) jtag_device <ir_length> <ir_expected> <ir_mask>");
1644 register_command(cmd_ctx, NULL, "reset_config", handle_reset_config_command,
1645 COMMAND_ANY,
1646 "[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]");
1647 register_command(cmd_ctx, NULL, "jtag_nsrst_delay", handle_jtag_nsrst_delay_command,
1648 COMMAND_ANY, "jtag_nsrst_delay <ms> - delay after deasserting srst in ms");
1649 register_command(cmd_ctx, NULL, "jtag_ntrst_delay", handle_jtag_ntrst_delay_command,
1650 COMMAND_ANY, "jtag_ntrst_delay <ms> - delay after deasserting trst in ms");
1651
1652 register_command(cmd_ctx, NULL, "scan_chain", handle_scan_chain_command,
1653 COMMAND_EXEC, "print current scan chain configuration");
1654
1655 register_command(cmd_ctx, NULL, "jtag_reset", handle_jtag_reset_command,
1656 COMMAND_EXEC, "toggle reset lines <trst> <srst>");
1657 register_command(cmd_ctx, NULL, "runtest", handle_runtest_command,
1658 COMMAND_EXEC, "move to Run-Test/Idle, and execute <num_cycles>");
1659 register_command(cmd_ctx, NULL, "irscan", handle_irscan_command,
1660 COMMAND_EXEC, "execute IR scan <device> <instr> [dev2] [instr2] ...");
1661 register_jim(cmd_ctx, "drscan", Jim_Command_drscan, "execute DR scan <device> <num_bits> <value> <num_bits1> <value2> ...");
1662 register_jim(cmd_ctx, "flush_count", Jim_Command_flush_count, "returns number of times the JTAG queue has been flushed");
1663
1664 register_command(cmd_ctx, NULL, "verify_ircapture", handle_verify_ircapture_command,
1665 COMMAND_ANY, "verify value captured during Capture-IR <enable|disable>");
1666 register_command(cmd_ctx, NULL, "verify_jtag", handle_verify_jtag_command,
1667 COMMAND_ANY, "verify value capture <enable|disable>");
1668 register_command(cmd_ctx, NULL, "tms_sequence", handle_tms_sequence_command,
1669 COMMAND_ANY, "choose short(default) or long tms_sequence <short|long>");
1670 return ERROR_OK;
1671 }
1672
1673 int jtag_interface_init(struct command_context_s *cmd_ctx)
1674 {
1675 if (jtag)
1676 return ERROR_OK;
1677
1678 if (!jtag_interface)
1679 {
1680 /* nothing was previously specified by "interface" command */
1681 LOG_ERROR("JTAG interface has to be specified, see \"interface\" command");
1682 return ERROR_JTAG_INVALID_INTERFACE;
1683 }
1684 if(hasKHz)
1685 {
1686 jtag_interface->khz(jtag_get_speed_khz(), &jtag_speed);
1687 hasKHz = false;
1688 }
1689
1690 if (jtag_interface->init() != ERROR_OK)
1691 return ERROR_JTAG_INIT_FAILED;
1692
1693 jtag = jtag_interface;
1694 return ERROR_OK;
1695 }
1696
1697 static int jtag_init_inner(struct command_context_s *cmd_ctx)
1698 {
1699 jtag_tap_t *tap;
1700 int retval;
1701
1702 LOG_DEBUG("Init JTAG chain");
1703
1704 tap = jtag_tap_next_enabled(NULL);
1705 if( tap == NULL ){
1706 LOG_ERROR("There are no enabled taps?");
1707 return ERROR_JTAG_INIT_FAILED;
1708 }
1709
1710 jtag_add_tlr();
1711 if ((retval=jtag_execute_queue())!=ERROR_OK)
1712 return retval;
1713
1714 /* examine chain first, as this could discover the real chain layout */
1715 if (jtag_examine_chain() != ERROR_OK)
1716 {
1717 LOG_ERROR("trying to validate configured JTAG chain anyway...");
1718 }
1719
1720 if (jtag_validate_chain() != ERROR_OK)
1721 {
1722 LOG_WARNING("Could not validate JTAG chain, continuing anyway...");
1723 }
1724
1725 return ERROR_OK;
1726 }
1727
1728 int jtag_interface_quit(void)
1729 {
1730 if (!jtag || !jtag->quit)
1731 return ERROR_OK;
1732
1733 // close the JTAG interface
1734 int result = jtag->quit();
1735 if (ERROR_OK != result)
1736 LOG_ERROR("failed: %d", result);
1737
1738 return ERROR_OK;
1739 }
1740
1741
1742 int jtag_init_reset(struct command_context_s *cmd_ctx)
1743 {
1744 int retval;
1745
1746 if ((retval=jtag_interface_init(cmd_ctx)) != ERROR_OK)
1747 return retval;
1748
1749 LOG_DEBUG("Trying to bring the JTAG controller to life by asserting TRST / RESET");
1750
1751 /* Reset can happen after a power cycle.
1752 *
1753 * Ideally we would only assert TRST or run RESET before the target reset.
1754 *
1755 * However w/srst_pulls_trst, trst is asserted together with the target
1756 * reset whether we want it or not.
1757 *
1758 * NB! Some targets have JTAG circuitry disabled until a
1759 * trst & srst has been asserted.
1760 *
1761 * NB! here we assume nsrst/ntrst delay are sufficient!
1762 *
1763 * NB! order matters!!!! srst *can* disconnect JTAG circuitry
1764 *
1765 */
1766 jtag_add_reset(1, 0); /* RESET or TRST */
1767 if (jtag_reset_config & RESET_HAS_SRST)
1768 {
1769 jtag_add_reset(1, 1);
1770 if ((jtag_reset_config & RESET_SRST_PULLS_TRST)==0)
1771 jtag_add_reset(0, 1);
1772 }
1773 jtag_add_reset(0, 0);
1774 if ((retval = jtag_execute_queue()) != ERROR_OK)
1775 return retval;
1776
1777 /* Check that we can communication on the JTAG chain + eventually we want to
1778 * be able to perform enumeration only after OpenOCD has started
1779 * telnet and GDB server
1780 *
1781 * That would allow users to more easily perform any magic they need to before
1782 * reset happens.
1783 */
1784 return jtag_init_inner(cmd_ctx);
1785 }
1786
1787 int jtag_init(struct command_context_s *cmd_ctx)
1788 {
1789 int retval;
1790 if ((retval=jtag_interface_init(cmd_ctx)) != ERROR_OK)
1791 return retval;
1792 if (jtag_init_inner(cmd_ctx)==ERROR_OK)
1793 {
1794 return ERROR_OK;
1795 }
1796 return jtag_init_reset(cmd_ctx);
1797 }
1798
1799 void jtag_set_speed_khz(unsigned khz)
1800 {
1801 speed_khz = khz;
1802 }
1803 unsigned jtag_get_speed_khz(void)
1804 {
1805 return speed_khz;
1806 }
1807
1808 static int default_khz(int khz, int *jtag_speed)
1809 {
1810 LOG_ERROR("Translation from khz to jtag_speed not implemented");
1811 return ERROR_FAIL;
1812 }
1813
1814 static int default_speed_div(int speed, int *khz)
1815 {
1816 LOG_ERROR("Translation from jtag_speed to khz not implemented");
1817 return ERROR_FAIL;
1818 }
1819
1820 static int default_power_dropout(int *dropout)
1821 {
1822 *dropout=0; /* by default we can't detect power dropout */
1823 return ERROR_OK;
1824 }
1825
1826 static int default_srst_asserted(int *srst_asserted)
1827 {
1828 *srst_asserted=0; /* by default we can't detect srst asserted */
1829 return ERROR_OK;
1830 }
1831
1832 static int handle_interface_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1833 {
1834 int i;
1835 int retval;
1836
1837 /* check whether the interface is already configured */
1838 if (jtag_interface)
1839 {
1840 LOG_WARNING("Interface already configured, ignoring");
1841 return ERROR_OK;
1842 }
1843
1844 /* interface name is a mandatory argument */
1845 if (argc < 1 || args[0][0] == '\0')
1846 {
1847 return ERROR_COMMAND_SYNTAX_ERROR;
1848 }
1849
1850 for (i=0; jtag_interfaces[i]; i++)
1851 {
1852 if (strcmp(args[0], jtag_interfaces[i]->name) == 0)
1853 {
1854 if ((retval = jtag_interfaces[i]->register_commands(cmd_ctx)) != ERROR_OK)
1855 {
1856 return retval;
1857 }
1858
1859 jtag_interface = jtag_interfaces[i];
1860
1861 if (jtag_interface->khz == NULL)
1862 {
1863 jtag_interface->khz = default_khz;
1864 }
1865 if (jtag_interface->speed_div == NULL)
1866 {
1867 jtag_interface->speed_div = default_speed_div;
1868 }
1869 if (jtag_interface->power_dropout == NULL)
1870 {
1871 jtag_interface->power_dropout = default_power_dropout;
1872 }
1873 if (jtag_interface->srst_asserted == NULL)
1874 {
1875 jtag_interface->srst_asserted = default_srst_asserted;
1876 }
1877
1878 return ERROR_OK;
1879 }
1880 }
1881
1882 /* no valid interface was found (i.e. the configuration option,
1883 * didn't match one of the compiled-in interfaces
1884 */
1885 LOG_ERROR("No valid jtag interface found (%s)", args[0]);
1886 LOG_ERROR("compiled-in jtag interfaces:");
1887 for (i = 0; jtag_interfaces[i]; i++)
1888 {
1889 LOG_ERROR("%i: %s", i, jtag_interfaces[i]->name);
1890 }
1891
1892 return ERROR_JTAG_INVALID_INTERFACE;
1893 }
1894
1895 static int handle_jtag_device_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1896 {
1897 int e;
1898 char buf[1024];
1899 Jim_Obj *newargs[ 10 ];
1900 /*
1901 * CONVERT SYNTAX
1902 * argv[-1] = command
1903 * argv[ 0] = ir length
1904 * argv[ 1] = ir capture
1905 * argv[ 2] = ir mask
1906 * argv[ 3] = not actually used by anything but in the docs
1907 */
1908
1909 if( argc < 4 ){
1910 command_print( cmd_ctx, "OLD DEPRECATED SYNTAX: Please use the NEW syntax");
1911 return ERROR_OK;
1912 }
1913 command_print( cmd_ctx, "OLD SYNTAX: DEPRECATED - translating to new syntax");
1914 command_print( cmd_ctx, "jtag newtap CHIP TAP -irlen %s -ircapture %s -irvalue %s",
1915 args[0],
1916 args[1],
1917 args[2] );
1918 command_print( cmd_ctx, "Example: STM32 has 2 taps, the cortexM3(len4) + boundaryscan(len5)");
1919 command_print( cmd_ctx, "jtag newtap stm32 cortexm3 ....., thus creating the tap: \"stm32.cortexm3\"");
1920 command_print( cmd_ctx, "jtag newtap stm32 boundary ....., and the tap: \"stm32.boundary\"");
1921 command_print( cmd_ctx, "And then refer to the taps by the dotted name.");
1922
1923 newargs[0] = Jim_NewStringObj( interp, "jtag", -1 );
1924 newargs[1] = Jim_NewStringObj( interp, "newtap", -1 );
1925 sprintf( buf, "chip%d", jtag_tap_count() );
1926 newargs[2] = Jim_NewStringObj( interp, buf, -1 );
1927 sprintf( buf, "tap%d", jtag_tap_count() );
1928 newargs[3] = Jim_NewStringObj( interp, buf, -1 );
1929 newargs[4] = Jim_NewStringObj( interp, "-irlen", -1 );
1930 newargs[5] = Jim_NewStringObj( interp, args[0], -1 );
1931 newargs[6] = Jim_NewStringObj( interp, "-ircapture", -1 );
1932 newargs[7] = Jim_NewStringObj( interp, args[1], -1 );
1933 newargs[8] = Jim_NewStringObj( interp, "-irmask", -1 );
1934 newargs[9] = Jim_NewStringObj( interp, args[2], -1 );
1935
1936 command_print( cmd_ctx, "NEW COMMAND:");
1937 sprintf( buf, "%s %s %s %s %s %s %s %s %s %s",
1938 Jim_GetString( newargs[0], NULL ),
1939 Jim_GetString( newargs[1], NULL ),
1940 Jim_GetString( newargs[2], NULL ),
1941 Jim_GetString( newargs[3], NULL ),
1942 Jim_GetString( newargs[4], NULL ),
1943 Jim_GetString( newargs[5], NULL ),
1944 Jim_GetString( newargs[6], NULL ),
1945 Jim_GetString( newargs[7], NULL ),
1946 Jim_GetString( newargs[8], NULL ),
1947 Jim_GetString( newargs[9], NULL ) );
1948
1949 e = jim_jtag_command( interp, 10, newargs );
1950 if( e != JIM_OK ){
1951 command_print( cmd_ctx, "%s", Jim_GetString( Jim_GetResult(interp), NULL ) );
1952 }
1953 return e;
1954 }
1955
1956 static int handle_scan_chain_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1957 {
1958 jtag_tap_t *tap;
1959
1960 tap = jtag_all_taps();
1961 command_print(cmd_ctx, " TapName | Enabled | IdCode Expected IrLen IrCap IrMask Instr ");
1962 command_print(cmd_ctx, "---|--------------------|---------|------------|------------|------|------|------|---------");
1963
1964 while( tap ){
1965 u32 expected, expected_mask, cur_instr, ii;
1966 expected = buf_get_u32(tap->expected, 0, tap->ir_length);
1967 expected_mask = buf_get_u32(tap->expected_mask, 0, tap->ir_length);
1968 cur_instr = buf_get_u32(tap->cur_instr, 0, tap->ir_length);
1969
1970 command_print(cmd_ctx,
1971 "%2d | %-18s | %c | 0x%08x | 0x%08x | 0x%02x | 0x%02x | 0x%02x | 0x%02x",
1972 tap->abs_chain_position,
1973 tap->dotted_name,
1974 tap->enabled ? 'Y' : 'n',
1975 tap->idcode,
1976 (tap->expected_ids_cnt > 0 ? tap->expected_ids[0] : 0),
1977 tap->ir_length,
1978 expected,
1979 expected_mask,
1980 cur_instr);
1981
1982 for (ii = 1; ii < tap->expected_ids_cnt; ii++) {
1983 command_print(cmd_ctx, " | | | | 0x%08x | | | | ",
1984 tap->expected_ids[ii]);
1985 }
1986
1987 tap = tap->next_tap;
1988 }
1989
1990 return ERROR_OK;
1991 }
1992
1993 static int handle_reset_config_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1994 {
1995 int new_cfg = 0;
1996 int mask = 0;
1997
1998 if (argc < 1)
1999 return ERROR_COMMAND_SYNTAX_ERROR;
2000
2001 /* Original versions cared about the order of these tokens:
2002 * reset_config signals [combination [trst_type [srst_type]]]
2003 * They also clobbered the previous configuration even on error.
2004 *
2005 * Here we don't care about the order, and only change values
2006 * which have been explicitly specified.
2007 */
2008 for (; argc; argc--, args++) {
2009 int tmp = 0;
2010 int m;
2011
2012 /* signals */
2013 m = RESET_HAS_TRST | RESET_HAS_SRST;
2014 if (strcmp(*args, "none") == 0)
2015 tmp = RESET_NONE;
2016 else if (strcmp(*args, "trst_only") == 0)
2017 tmp = RESET_HAS_TRST;
2018 else if (strcmp(*args, "srst_only") == 0)
2019 tmp = RESET_HAS_SRST;
2020 else if (strcmp(*args, "trst_and_srst") == 0)
2021 tmp = RESET_HAS_TRST | RESET_HAS_SRST;
2022 else
2023 m = 0;
2024 if (mask & m) {
2025 LOG_ERROR("extra reset_config %s spec (%s)",
2026 "signal", *args);
2027 return ERROR_INVALID_ARGUMENTS;
2028 }
2029 if (m)
2030 goto next;
2031
2032 /* combination (options for broken wiring) */
2033 m = RESET_SRST_PULLS_TRST | RESET_TRST_PULLS_SRST;
2034 if (strcmp(*args, "separate") == 0)
2035 /* separate reset lines - default */;
2036 else if (strcmp(*args, "srst_pulls_trst") == 0)
2037 tmp |= RESET_SRST_PULLS_TRST;
2038 else if (strcmp(*args, "trst_pulls_srst") == 0)
2039 tmp |= RESET_TRST_PULLS_SRST;
2040 else if (strcmp(*args, "combined") == 0)
2041 tmp |= RESET_SRST_PULLS_TRST | RESET_TRST_PULLS_SRST;
2042 else
2043 m = 0;
2044 if (mask & m) {
2045 LOG_ERROR("extra reset_config %s spec (%s)",
2046 "combination", *args);
2047 return ERROR_INVALID_ARGUMENTS;
2048 }
2049 if (m)
2050 goto next;
2051
2052 /* trst_type (NOP without HAS_TRST) */
2053 m = RESET_TRST_OPEN_DRAIN;
2054 if (strcmp(*args, "trst_open_drain") == 0)
2055 tmp |= RESET_TRST_OPEN_DRAIN;
2056 else if (strcmp(*args, "trst_push_pull") == 0)
2057 /* push/pull from adapter - default */;
2058 else
2059 m = 0;
2060 if (mask & m) {
2061 LOG_ERROR("extra reset_config %s spec (%s)",
2062 "trst_type", *args);
2063 return ERROR_INVALID_ARGUMENTS;
2064 }
2065 if (m)
2066 goto next;
2067
2068 /* srst_type (NOP without HAS_SRST) */
2069 m |= RESET_SRST_PUSH_PULL;
2070 if (strcmp(*args, "srst_push_pull") == 0)
2071 tmp |= RESET_SRST_PUSH_PULL;
2072 else if (strcmp(*args, "srst_open_drain") == 0)
2073 /* open drain from adapter - default */;
2074 else
2075 m = 0;
2076 if (mask & m) {
2077 LOG_ERROR("extra reset_config %s spec (%s)",
2078 "srst_type", *args);
2079 return ERROR_INVALID_ARGUMENTS;
2080 }
2081 if (m)
2082 goto next;
2083
2084 /* caller provided nonsense; fail */
2085 LOG_ERROR("unknown reset_config flag (%s)", *args);
2086 return ERROR_INVALID_ARGUMENTS;
2087
2088 next:
2089 /* Remember the bits which were specified (mask)
2090 * and their new values (new_cfg).
2091 */
2092 mask |= m;
2093 new_cfg |= tmp;
2094 }
2095
2096 /* clear previous values of those bits, save new values */
2097 jtag_reset_config &= ~mask;
2098 jtag_reset_config |= new_cfg;
2099
2100 return ERROR_OK;
2101 }
2102
2103 static int handle_jtag_nsrst_delay_command(struct command_context_s *cmd_ctx,
2104 char *cmd, char **args, int argc)
2105 {
2106 if (argc > 1)
2107 return ERROR_COMMAND_SYNTAX_ERROR;
2108 if (argc == 1)
2109 jtag_set_nsrst_delay(strtoul(args[0], NULL, 0));
2110 command_print(cmd_ctx, "jtag_nsrst_delay: %u", jtag_get_nsrst_delay());
2111 return ERROR_OK;
2112 }
2113
2114 static int handle_jtag_ntrst_delay_command(struct command_context_s *cmd_ctx,
2115 char *cmd, char **args, int argc)
2116 {
2117 if (argc > 1)
2118 return ERROR_COMMAND_SYNTAX_ERROR;
2119 if (argc == 1)
2120 jtag_set_ntrst_delay(strtoul(args[0], NULL, 0));
2121 command_print(cmd_ctx, "jtag_ntrst_delay: %u", jtag_get_ntrst_delay());
2122 return ERROR_OK;
2123 }
2124
2125 static int handle_jtag_speed_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2126 {
2127 int retval = ERROR_OK;
2128
2129 if (argc > 1)
2130 return ERROR_COMMAND_SYNTAX_ERROR;
2131 if (argc == 1)
2132 {
2133 LOG_DEBUG("handle jtag speed");
2134
2135 int cur_speed = 0;
2136 cur_speed = jtag_speed = strtoul(args[0], NULL, 0);
2137
2138 /* this command can be called during CONFIG,
2139 * in which case jtag isn't initialized */
2140 if (jtag)
2141 retval = jtag->speed(cur_speed);
2142 }
2143 command_print(cmd_ctx, "jtag_speed: %d", jtag_speed);
2144
2145 return retval;
2146 }
2147
2148 static int handle_jtag_khz_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2149 {
2150 if (argc > 1)
2151 return ERROR_COMMAND_SYNTAX_ERROR;
2152
2153 int retval = ERROR_OK;
2154 int cur_speed = 0;
2155 if (argc == 1)
2156 {
2157 LOG_DEBUG("handle jtag khz");
2158
2159 jtag_set_speed_khz(strtoul(args[0], NULL, 0));
2160 if (jtag != NULL)
2161 {
2162 LOG_DEBUG("have interface set up");
2163 int speed_div1;
2164 retval = jtag->khz(jtag_get_speed_khz(), &speed_div1);
2165 if (ERROR_OK != retval)
2166 {
2167 jtag_set_speed_khz(0);
2168 return retval;
2169 }
2170 cur_speed = jtag_speed = speed_div1;
2171
2172 retval = jtag->speed(cur_speed);
2173 }
2174 else
2175 hasKHz = true;
2176 }
2177
2178 cur_speed = jtag_get_speed_khz();
2179 if (jtag != NULL)
2180 {
2181 retval = jtag->speed_div(jtag_speed, &cur_speed);
2182 if (ERROR_OK != retval)
2183 return retval;
2184 }
2185
2186 if (cur_speed)
2187 command_print(cmd_ctx, "%d kHz", cur_speed);
2188 else
2189 command_print(cmd_ctx, "RCLK - adaptive");
2190 return retval;
2191
2192 }
2193
2194 static int handle_jtag_reset_command(struct command_context_s *cmd_ctx,
2195 char *cmd, char **args, int argc)
2196 {
2197 if (argc != 2)
2198 return ERROR_COMMAND_SYNTAX_ERROR;
2199
2200 int trst = -1;
2201 if (args[0][0] == '1')
2202 trst = 1;
2203 else if (args[0][0] == '0')
2204 trst = 0;
2205 else
2206 return ERROR_COMMAND_SYNTAX_ERROR;
2207
2208 int srst = -1;
2209 if (args[1][0] == '1')
2210 srst = 1;
2211 else if (args[1][0] == '0')
2212 srst = 0;
2213 else
2214 return ERROR_COMMAND_SYNTAX_ERROR;
2215
2216 if (jtag_interface_init(cmd_ctx) != ERROR_OK)
2217 return ERROR_JTAG_INIT_FAILED;
2218
2219 jtag_add_reset(trst, srst);
2220 jtag_execute_queue();
2221
2222 return ERROR_OK;
2223 }
2224
2225 static int handle_runtest_command(struct command_context_s *cmd_ctx,
2226 char *cmd, char **args, int argc)
2227 {
2228 if (argc != 1)
2229 return ERROR_COMMAND_SYNTAX_ERROR;
2230
2231 jtag_add_runtest(strtol(args[0], NULL, 0), jtag_get_end_state());
2232 jtag_execute_queue();
2233
2234 return ERROR_OK;
2235 }
2236
2237 /*
2238 * For "irscan" or "drscan" commands, the "end" (really, "next") state
2239 * should be stable ... and *NOT* a shift state, otherwise free-running
2240 * jtag clocks could change the values latched by the update state.
2241 */
2242 static bool scan_is_safe(tap_state_t state)
2243 {
2244 switch (state)
2245 {
2246 case TAP_RESET:
2247 case TAP_IDLE:
2248 case TAP_DRPAUSE:
2249 case TAP_IRPAUSE:
2250 return true;
2251 default:
2252 return false;
2253 }
2254 }
2255
2256
2257 static int handle_irscan_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2258 {
2259 int i;
2260 scan_field_t *fields;
2261 jtag_tap_t *tap;
2262 tap_state_t endstate;
2263
2264 if ((argc < 2) || (argc % 2))
2265 {
2266 return ERROR_COMMAND_SYNTAX_ERROR;
2267 }
2268
2269 /* optional "-endstate" "statename" at the end of the arguments,
2270 * so that e.g. IRPAUSE can let us load the data register before
2271 * entering RUN/IDLE to execute the instruction we load here.
2272 */
2273 endstate = TAP_IDLE;
2274
2275 if( argc >= 4 ){
2276 /* have at least one pair of numbers. */
2277 /* is last pair the magic text? */
2278 if( 0 == strcmp( "-endstate", args[ argc - 2 ] ) ){
2279 const char *cpA;
2280 const char *cpS;
2281 cpA = args[ argc-1 ];
2282 for( endstate = 0 ; endstate < TAP_NUM_STATES ; endstate++ ){
2283 cpS = tap_state_name( endstate );
2284 if( 0 == strcmp( cpA, cpS ) ){
2285 break;
2286 }
2287 }
2288 if( endstate >= TAP_NUM_STATES ){
2289 return ERROR_COMMAND_SYNTAX_ERROR;
2290 } else {
2291 if (!scan_is_safe(endstate))
2292 LOG_WARNING("irscan with unsafe "
2293 "endstate \"%s\"", cpA);
2294 /* found - remove the last 2 args */
2295 argc -= 2;
2296 }
2297 }
2298 }
2299
2300 int num_fields = argc / 2;
2301
2302 fields = malloc(sizeof(scan_field_t) * num_fields);
2303
2304 for (i = 0; i < num_fields; i++)
2305 {
2306 tap = jtag_tap_by_string( args[i*2] );
2307 if (tap==NULL)
2308 {
2309 command_print( cmd_ctx, "Tap: %s unknown", args[i*2] );
2310 return ERROR_FAIL;
2311 }
2312 int field_size = tap->ir_length;
2313 fields[i].tap = tap;
2314 fields[i].num_bits = field_size;
2315 fields[i].out_value = malloc(CEIL(field_size, 8));
2316 buf_set_u32(fields[i].out_value, 0, field_size, strtoul(args[i*2+1], NULL, 0));
2317 fields[i].in_value = NULL;
2318 }
2319
2320 /* did we have an endstate? */
2321 jtag_add_ir_scan(num_fields, fields, endstate);
2322
2323 int retval=jtag_execute_queue();
2324
2325 for (i = 0; i < num_fields; i++)
2326 free(fields[i].out_value);
2327
2328 free (fields);
2329
2330 return retval;
2331 }
2332
2333 static int Jim_Command_drscan(Jim_Interp *interp, int argc, Jim_Obj *const *args)
2334 {
2335 int retval;
2336 scan_field_t *fields;
2337 int num_fields;
2338 int field_count = 0;
2339 int i, e;
2340 jtag_tap_t *tap;
2341 tap_state_t endstate;
2342
2343 /* args[1] = device
2344 * args[2] = num_bits
2345 * args[3] = hex string
2346 * ... repeat num bits and hex string ...
2347 *
2348 * .. optionally:
2349 * args[N-2] = "-endstate"
2350 * args[N-1] = statename
2351 */
2352 if ((argc < 4) || ((argc % 2)!=0))
2353 {
2354 Jim_WrongNumArgs(interp, 1, args, "wrong arguments");
2355 return JIM_ERR;
2356 }
2357
2358 endstate = TAP_IDLE;
2359
2360 /* validate arguments as numbers */
2361 e = JIM_OK;
2362 for (i = 2; i < argc; i+=2)
2363 {
2364 long bits;
2365 const char *cp;
2366
2367 e = Jim_GetLong(interp, args[i], &bits);
2368 /* If valid - try next arg */
2369 if( e == JIM_OK ){
2370 continue;
2371 }
2372
2373 /* Not valid.. are we at the end? */
2374 if ( ((i+2) != argc) ){
2375 /* nope, then error */
2376 return e;
2377 }
2378
2379 /* it could be: "-endstate FOO"
2380 * e.g. DRPAUSE so we can issue more instructions
2381 * before entering RUN/IDLE and executing them.
2382 */
2383
2384 /* get arg as a string. */
2385 cp = Jim_GetString( args[i], NULL );
2386 /* is it the magic? */
2387 if( 0 == strcmp( "-endstate", cp ) ){
2388 /* is the statename valid? */
2389 cp = Jim_GetString( args[i+1], NULL );
2390
2391 /* see if it is a valid state name */
2392 endstate = tap_state_by_name(cp);
2393 if( endstate < 0 ){
2394 /* update the error message */
2395 Jim_SetResult_sprintf(interp,"endstate: %s invalid", cp );
2396 } else {
2397 if (!scan_is_safe(endstate))
2398 LOG_WARNING("drscan with unsafe "
2399 "endstate \"%s\"", cp);
2400
2401 /* valid - so clear the error */
2402 e = JIM_OK;
2403 /* and remove the last 2 args */
2404 argc -= 2;
2405 }
2406 }
2407
2408 /* Still an error? */
2409 if( e != JIM_OK ){
2410 return e; /* too bad */
2411 }
2412 } /* validate args */
2413
2414 tap = jtag_tap_by_jim_obj( interp, args[1] );
2415 if( tap == NULL ){
2416 return JIM_ERR;
2417 }
2418
2419 num_fields=(argc-2)/2;
2420 fields = malloc(sizeof(scan_field_t) * num_fields);
2421 for (i = 2; i < argc; i+=2)
2422 {
2423 long bits;
2424 int len;
2425 const char *str;
2426
2427 Jim_GetLong(interp, args[i], &bits);
2428 str = Jim_GetString(args[i+1], &len);
2429
2430 fields[field_count].tap = tap;
2431 fields[field_count].num_bits = bits;
2432 fields[field_count].out_value = malloc(CEIL(bits, 8));
2433 str_to_buf(str, len, fields[field_count].out_value, bits, 0);
2434 fields[field_count].in_value = fields[field_count].out_value;
2435 field_count++;
2436 }
2437
2438 jtag_add_dr_scan(num_fields, fields, endstate);
2439
2440 retval = jtag_execute_queue();
2441 if (retval != ERROR_OK)
2442 {
2443 Jim_SetResultString(interp, "drscan: jtag execute failed",-1);
2444 return JIM_ERR;
2445 }
2446
2447 field_count=0;
2448 Jim_Obj *list = Jim_NewListObj(interp, NULL, 0);
2449 for (i = 2; i < argc; i+=2)
2450 {
2451 long bits;
2452 char *str;
2453
2454 Jim_GetLong(interp, args[i], &bits);
2455 str = buf_to_str(fields[field_count].in_value, bits, 16);
2456 free(fields[field_count].out_value);
2457
2458 Jim_ListAppendElement(interp, list, Jim_NewStringObj(interp, str, strlen(str)));
2459 free(str);
2460 field_count++;
2461 }
2462
2463 Jim_SetResult(interp, list);
2464
2465 free(fields);
2466
2467 return JIM_OK;
2468 }
2469
2470
2471 static int Jim_Command_flush_count(Jim_Interp *interp, int argc, Jim_Obj *const *args)
2472 {
2473 Jim_SetResult(interp, Jim_NewIntObj(interp, jtag_get_flush_queue_count()));
2474
2475 return JIM_OK;
2476 }
2477
2478
2479 static int handle_verify_ircapture_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2480 {
2481 if (argc == 1)
2482 {
2483 if (strcmp(args[0], "enable") == 0)
2484 {
2485 jtag_verify_capture_ir = 1;
2486 }
2487 else if (strcmp(args[0], "disable") == 0)
2488 {
2489 jtag_verify_capture_ir = 0;
2490 } else
2491 {
2492 return ERROR_COMMAND_SYNTAX_ERROR;
2493 }
2494 } else if (argc != 0)
2495 {
2496 return ERROR_COMMAND_SYNTAX_ERROR;
2497 }
2498
2499 command_print(cmd_ctx, "verify Capture-IR is %s", (jtag_verify_capture_ir) ? "enabled": "disabled");
2500
2501 return ERROR_OK;
2502 }
2503
2504 void jtag_set_verify(bool enable)
2505 {
2506 jtag_verify = enable;
2507 }
2508
2509 bool jtag_will_verify()
2510 {
2511 return jtag_verify;
2512 }
2513
2514 static int handle_verify_jtag_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2515 {
2516 if (argc > 1)
2517 return ERROR_COMMAND_SYNTAX_ERROR;
2518
2519 if (argc == 1)
2520 {
2521 if (strcmp(args[0], "enable") == 0)
2522 jtag_set_verify(true);
2523 else if (strcmp(args[0], "disable") == 0)
2524 jtag_set_verify(false);
2525 else
2526 return ERROR_COMMAND_SYNTAX_ERROR;
2527 }
2528
2529 const char *status = jtag_will_verify() ? "enabled": "disabled";
2530 command_print(cmd_ctx, "verify jtag capture is %s", status);
2531
2532 return ERROR_OK;
2533 }
2534
2535
2536 int jtag_power_dropout(int *dropout)
2537 {
2538 return jtag->power_dropout(dropout);
2539 }
2540
2541 int jtag_srst_asserted(int *srst_asserted)
2542 {
2543 return jtag->srst_asserted(srst_asserted);
2544 }
2545
2546 void jtag_tap_handle_event( jtag_tap_t * tap, enum jtag_tap_event e)
2547 {
2548 jtag_tap_event_action_t * jteap;
2549 int done;
2550
2551 jteap = tap->event_action;
2552
2553 done = 0;
2554 while (jteap) {
2555 if (jteap->event == e) {
2556 done = 1;
2557 LOG_DEBUG( "JTAG tap: %s event: %d (%s) action: %s\n",
2558 tap->dotted_name,
2559 e,
2560 Jim_Nvp_value2name_simple(nvp_jtag_tap_event, e)->name,
2561 Jim_GetString(jteap->body, NULL) );
2562 if (Jim_EvalObj(interp, jteap->body) != JIM_OK) {
2563 Jim_PrintErrorMessage(interp);
2564 }
2565 }
2566
2567 jteap = jteap->next;
2568 }
2569
2570 if (!done) {
2571 LOG_DEBUG( "event %d %s - no action",
2572 e,
2573 Jim_Nvp_value2name_simple( nvp_jtag_tap_event, e)->name);
2574 }
2575 }
2576
2577 static int handle_tms_sequence_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2578 {
2579 if (argc > 1)
2580 return ERROR_COMMAND_SYNTAX_ERROR;
2581
2582 if (argc == 1)
2583 {
2584 bool use_new_table;
2585 if (strcmp(args[0], "short") == 0)
2586 use_new_table = true;
2587 else if (strcmp(args[0], "long") == 0)
2588 use_new_table = false;
2589 else
2590 return ERROR_COMMAND_SYNTAX_ERROR;
2591
2592 tap_use_new_tms_table(use_new_table);
2593 }
2594
2595 command_print(cmd_ctx, "tms sequence is %s",
2596 tap_uses_new_tms_table() ? "short": "long");
2597
2598 return ERROR_OK;
2599 }
2600
2601 /**
2602 * Function jtag_add_statemove
2603 * moves from the current state to the goal \a state. This needs
2604 * to be handled according to the xsvf spec, see the XSTATE command
2605 * description.
2606 */
2607 int jtag_add_statemove(tap_state_t goal_state)
2608 {
2609 int retval = ERROR_OK;
2610
2611 tap_state_t moves[8];
2612 tap_state_t cur_state = cmd_queue_cur_state;
2613 int i;
2614 int tms_bits;
2615 int tms_count;
2616
2617 LOG_DEBUG( "cur_state=%s goal_state=%s",
2618 tap_state_name(cur_state),
2619 tap_state_name(goal_state) );
2620
2621
2622 /* From the XSVF spec, pertaining to XSTATE:
2623
2624 For special states known as stable states (Test-Logic-Reset,
2625 Run-Test/Idle, Pause-DR, Pause- IR), an XSVF interpreter follows
2626 predefined TAP state paths when the starting state is a stable state and
2627 when the XSTATE specifies a new stable state (see the STATE command in
2628 the [Ref 5] for the TAP state paths between stable states). For
2629 non-stable states, XSTATE should specify a state that is only one TAP
2630 state transition distance from the current TAP state to avoid undefined
2631 TAP state paths. A sequence of multiple XSTATE commands can be issued to
2632 transition the TAP through a specific state path.
2633 */
2634
2635 if (goal_state==cur_state )
2636 ; /* nothing to do */
2637
2638 else if( goal_state==TAP_RESET )
2639 {
2640 jtag_add_tlr();
2641 }
2642
2643 else if( tap_is_state_stable(cur_state) && tap_is_state_stable(goal_state) )
2644 {
2645 /* note: unless tms_bits holds a path that agrees with [Ref 5] in above
2646 spec, then this code is not fully conformant to the xsvf spec. This
2647 puts a burden on tap_get_tms_path() function from the xsvf spec.
2648 If in doubt, you should confirm that that burden is being met.
2649 */
2650
2651 tms_bits = tap_get_tms_path(cur_state, goal_state);
2652 tms_count = tap_get_tms_path_len(cur_state, goal_state);
2653
2654 assert( (unsigned) tms_count < DIM(moves) );
2655
2656 for (i=0; i<tms_count; i++, tms_bits>>=1)
2657 {
2658 bool bit = tms_bits & 1;
2659
2660 cur_state = tap_state_transition(cur_state, bit);
2661 moves[i] = cur_state;
2662 }
2663
2664 jtag_add_pathmove(tms_count, moves);
2665 }
2666
2667 /* else state must be immediately reachable in one clock cycle, and does not
2668 need to be a stable state.
2669 */
2670 else if( tap_state_transition(cur_state, true) == goal_state
2671 || tap_state_transition(cur_state, false) == goal_state )
2672 {
2673 /* move a single state */
2674 moves[0] = goal_state;
2675 jtag_add_pathmove( 1, moves );
2676 }
2677
2678 else
2679 {
2680 retval = ERROR_FAIL;
2681 }
2682
2683 return retval;
2684 }
2685
2686 void jtag_set_nsrst_delay(unsigned delay)
2687 {
2688 jtag_nsrst_delay = delay;
2689 }
2690 unsigned jtag_get_nsrst_delay(void)
2691 {
2692 return jtag_nsrst_delay;
2693 }
2694 void jtag_set_ntrst_delay(unsigned delay)
2695 {
2696 jtag_ntrst_delay = delay;
2697 }
2698 unsigned jtag_get_ntrst_delay(void)
2699 {
2700 return jtag_ntrst_delay;
2701 }
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