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Simplify jtag_add_tlr:
[openocd.git] / src / jtag / jtag.c
1 /***************************************************************************
2 * Copyright (C) 2005 by Dominic Rath *
3 * Dominic.Rath@gmx.de *
4 * *
5 * Copyright (C) 2007,2008 Øyvind Harboe *
6 * oyvind.harboe@zylin.com *
7 * *
8 * Copyright (C) 2009 SoftPLC Corporation *
9 * http://softplc.com *
10 * dick@softplc.com *
11 * *
12 * This program is free software; you can redistribute it and/or modify *
13 * it under the terms of the GNU General Public License as published by *
14 * the Free Software Foundation; either version 2 of the License, or *
15 * (at your option) any later version. *
16 * *
17 * This program is distributed in the hope that it will be useful, *
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
20 * GNU General Public License for more details. *
21 * *
22 * You should have received a copy of the GNU General Public License *
23 * along with this program; if not, write to the *
24 * Free Software Foundation, Inc., *
25 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
26 ***************************************************************************/
27 #ifdef HAVE_CONFIG_H
28 #include "config.h"
29 #endif
30
31 #include "jtag.h"
32 #include "minidriver.h"
33 #include "interface.h"
34
35 #ifdef HAVE_STRINGS_H
36 #include <strings.h>
37 #endif
38
39
40 /// The number of JTAG queue flushes (for profiling and debugging purposes).
41 static int jtag_flush_queue_count;
42
43 static void jtag_add_scan_check(void (*jtag_add_scan)(int in_num_fields, const scan_field_t *in_fields, tap_state_t state),
44 int in_num_fields, scan_field_t *in_fields, tap_state_t state);
45
46 /* note that this is not marked as static as it must be available from outside jtag.c for those
47 that implement the jtag_xxx() minidriver layer
48 */
49 int jtag_error=ERROR_OK;
50
51 char* jtag_event_strings[] =
52 {
53 "JTAG controller reset (RESET or TRST)"
54 };
55
56 const Jim_Nvp nvp_jtag_tap_event[] = {
57 { .value = JTAG_TAP_EVENT_ENABLE, .name = "tap-enable" },
58 { .value = JTAG_TAP_EVENT_DISABLE, .name = "tap-disable" },
59
60 { .name = NULL, .value = -1 }
61 };
62
63 int jtag_trst = 0;
64 int jtag_srst = 0;
65
66 /**
67 * List all TAPs that have been created.
68 */
69 static jtag_tap_t *__jtag_all_taps = NULL;
70 /**
71 * The number of TAPs in the __jtag_all_taps list, used to track the
72 * assigned chain position to new TAPs
73 */
74 static int jtag_num_taps = 0;
75
76 enum reset_types jtag_reset_config = RESET_NONE;
77 tap_state_t cmd_queue_end_state = TAP_RESET;
78 tap_state_t cmd_queue_cur_state = TAP_RESET;
79
80 int jtag_verify_capture_ir = 1;
81 int jtag_verify = 1;
82
83 /* how long the OpenOCD should wait before attempting JTAG communication after reset lines deasserted (in ms) */
84 static int jtag_nsrst_delay = 0; /* default to no nSRST delay */
85 static int jtag_ntrst_delay = 0; /* default to no nTRST delay */
86
87 /* callbacks to inform high-level handlers about JTAG state changes */
88 jtag_event_callback_t *jtag_event_callbacks;
89
90 /* speed in kHz*/
91 static int speed_khz = 0;
92 /* flag if the kHz speed was defined */
93 static bool hasKHz = false;
94
95 /* jtag interfaces (parport, FTDI-USB, TI-USB, ...)
96 */
97
98 #if BUILD_ECOSBOARD == 1
99 extern jtag_interface_t zy1000_interface;
100 #elif defined(BUILD_MINIDRIVER_DUMMY)
101 extern jtag_interface_t minidummy_interface;
102 #else // standard drivers
103 #if BUILD_PARPORT == 1
104 extern jtag_interface_t parport_interface;
105 #endif
106
107 #if BUILD_DUMMY == 1
108 extern jtag_interface_t dummy_interface;
109 #endif
110
111 #if BUILD_FT2232_FTD2XX == 1
112 extern jtag_interface_t ft2232_interface;
113 #endif
114
115 #if BUILD_FT2232_LIBFTDI == 1
116 extern jtag_interface_t ft2232_interface;
117 #endif
118
119 #if BUILD_AMTJTAGACCEL == 1
120 extern jtag_interface_t amt_jtagaccel_interface;
121 #endif
122
123 #if BUILD_EP93XX == 1
124 extern jtag_interface_t ep93xx_interface;
125 #endif
126
127 #if BUILD_AT91RM9200 == 1
128 extern jtag_interface_t at91rm9200_interface;
129 #endif
130
131 #if BUILD_GW16012 == 1
132 extern jtag_interface_t gw16012_interface;
133 #endif
134
135 #if BUILD_PRESTO_LIBFTDI == 1 || BUILD_PRESTO_FTD2XX == 1
136 extern jtag_interface_t presto_interface;
137 #endif
138
139 #if BUILD_USBPROG == 1
140 extern jtag_interface_t usbprog_interface;
141 #endif
142
143 #if BUILD_JLINK == 1
144 extern jtag_interface_t jlink_interface;
145 #endif
146
147 #if BUILD_VSLLINK == 1
148 extern jtag_interface_t vsllink_interface;
149 #endif
150
151 #if BUILD_RLINK == 1
152 extern jtag_interface_t rlink_interface;
153 #endif
154
155 #if BUILD_ARMJTAGEW == 1
156 extern jtag_interface_t armjtagew_interface;
157 #endif
158 #endif // standard drivers
159
160 /**
161 * The list of built-in JTAG interfaces, containing entries for those
162 * drivers that were enabled by the @c configure script.
163 *
164 * The list should be defined to contain either one minidriver interface
165 * or some number of standard driver interfaces, never both.
166 */
167 jtag_interface_t *jtag_interfaces[] = {
168 #if BUILD_ECOSBOARD == 1
169 &zy1000_interface,
170 #elif defined(BUILD_MINIDRIVER_DUMMY)
171 &minidummy_interface,
172 #else // standard drivers
173 #if BUILD_PARPORT == 1
174 &parport_interface,
175 #endif
176 #if BUILD_DUMMY == 1
177 &dummy_interface,
178 #endif
179 #if BUILD_FT2232_FTD2XX == 1
180 &ft2232_interface,
181 #endif
182 #if BUILD_FT2232_LIBFTDI == 1
183 &ft2232_interface,
184 #endif
185 #if BUILD_AMTJTAGACCEL == 1
186 &amt_jtagaccel_interface,
187 #endif
188 #if BUILD_EP93XX == 1
189 &ep93xx_interface,
190 #endif
191 #if BUILD_AT91RM9200 == 1
192 &at91rm9200_interface,
193 #endif
194 #if BUILD_GW16012 == 1
195 &gw16012_interface,
196 #endif
197 #if BUILD_PRESTO_LIBFTDI == 1 || BUILD_PRESTO_FTD2XX == 1
198 &presto_interface,
199 #endif
200 #if BUILD_USBPROG == 1
201 &usbprog_interface,
202 #endif
203 #if BUILD_JLINK == 1
204 &jlink_interface,
205 #endif
206 #if BUILD_VSLLINK == 1
207 &vsllink_interface,
208 #endif
209 #if BUILD_RLINK == 1
210 &rlink_interface,
211 #endif
212 #if BUILD_ARMJTAGEW == 1
213 &armjtagew_interface,
214 #endif
215 #endif // standard drivers
216 NULL,
217 };
218
219 struct jtag_interface_s *jtag = NULL;
220
221 /* configuration */
222 static jtag_interface_t *jtag_interface = NULL;
223 int jtag_speed = 0;
224
225 /* jtag commands */
226 static int handle_interface_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
227 static int handle_jtag_speed_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
228 static int handle_jtag_khz_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
229 static int handle_jtag_device_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
230 static int handle_reset_config_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
231 static int handle_jtag_nsrst_delay_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
232 static int handle_jtag_ntrst_delay_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
233
234 static int handle_scan_chain_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
235
236 static int handle_jtag_reset_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
237 static int handle_runtest_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
238 static int handle_irscan_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
239 static int Jim_Command_drscan(Jim_Interp *interp, int argc, Jim_Obj *const *argv);
240 static int Jim_Command_flush_count(Jim_Interp *interp, int argc, Jim_Obj *const *args);
241
242 static int handle_verify_ircapture_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
243 static int handle_verify_jtag_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
244 static int handle_tms_sequence_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
245
246 jtag_tap_t *jtag_all_taps(void)
247 {
248 return __jtag_all_taps;
249 };
250
251 int jtag_tap_count(void)
252 {
253 return jtag_num_taps;
254 }
255
256 unsigned jtag_tap_count_enabled(void)
257 {
258 jtag_tap_t *t;
259 unsigned n;
260
261 n = 0;
262 t = jtag_all_taps();
263 while(t){
264 if( t->enabled ){
265 n++;
266 }
267 t = t->next_tap;
268 }
269 return n;
270 }
271
272 /// Append a new TAP to the chain of all taps.
273 static void jtag_tap_add(struct jtag_tap_s *t)
274 {
275 t->abs_chain_position = jtag_num_taps++;
276
277 jtag_tap_t **tap = &__jtag_all_taps;
278 while(*tap != NULL)
279 tap = &(*tap)->next_tap;
280 *tap = t;
281 }
282
283 jtag_tap_t *jtag_tap_by_string( const char *s )
284 {
285 jtag_tap_t *t;
286 char *cp;
287
288 t = jtag_all_taps();
289 /* try name first */
290 while(t){
291 if( 0 == strcmp( t->dotted_name, s ) ){
292 break;
293 } else {
294 t = t->next_tap;
295 }
296 }
297 /* backup plan is by number */
298 if( t == NULL ){
299 /* ok - is "s" a number? */
300 int n;
301 n = strtol( s, &cp, 0 );
302 if( (s != cp) && (*cp == 0) ){
303 /* Then it is... */
304 t = jtag_tap_by_abs_position(n);
305 }
306 }
307 return t;
308 }
309
310 jtag_tap_t * jtag_tap_by_jim_obj( Jim_Interp *interp, Jim_Obj *o )
311 {
312 jtag_tap_t *t;
313 const char *cp;
314
315 cp = Jim_GetString( o, NULL );
316 if(cp == NULL){
317 cp = "(unknown)";
318 t = NULL;
319 } else {
320 t = jtag_tap_by_string( cp );
321 }
322 if( t == NULL ){
323 Jim_SetResult_sprintf(interp,"Tap: %s is unknown", cp );
324 }
325 return t;
326 }
327
328 /* returns a pointer to the n-th device in the scan chain */
329 jtag_tap_t * jtag_tap_by_abs_position( int n )
330 {
331 int orig_n;
332 jtag_tap_t *t;
333
334 orig_n = n;
335 t = jtag_all_taps();
336
337 while( t && (n > 0)) {
338 n--;
339 t = t->next_tap;
340 }
341 return t;
342 }
343
344 const char *jtag_tap_name(const jtag_tap_t *tap)
345 {
346 return (tap == NULL) ? "(unknown)" : tap->dotted_name;
347 }
348
349
350 int jtag_register_event_callback(int (*callback)(enum jtag_event event, void *priv), void *priv)
351 {
352 jtag_event_callback_t **callbacks_p = &jtag_event_callbacks;
353
354 if (callback == NULL)
355 {
356 return ERROR_INVALID_ARGUMENTS;
357 }
358
359 if (*callbacks_p)
360 {
361 while ((*callbacks_p)->next)
362 callbacks_p = &((*callbacks_p)->next);
363 callbacks_p = &((*callbacks_p)->next);
364 }
365
366 (*callbacks_p) = malloc(sizeof(jtag_event_callback_t));
367 (*callbacks_p)->callback = callback;
368 (*callbacks_p)->priv = priv;
369 (*callbacks_p)->next = NULL;
370
371 return ERROR_OK;
372 }
373
374 int jtag_unregister_event_callback(int (*callback)(enum jtag_event event, void *priv))
375 {
376 jtag_event_callback_t **callbacks_p = &jtag_event_callbacks;
377
378 if (callback == NULL)
379 {
380 return ERROR_INVALID_ARGUMENTS;
381 }
382
383 while (*callbacks_p)
384 {
385 jtag_event_callback_t **next = &((*callbacks_p)->next);
386 if ((*callbacks_p)->callback == callback)
387 {
388 free(*callbacks_p);
389 *callbacks_p = *next;
390 }
391 callbacks_p = next;
392 }
393
394 return ERROR_OK;
395 }
396
397 int jtag_call_event_callbacks(enum jtag_event event)
398 {
399 jtag_event_callback_t *callback = jtag_event_callbacks;
400
401 LOG_DEBUG("jtag event: %s", jtag_event_strings[event]);
402
403 while (callback)
404 {
405 callback->callback(event, callback->priv);
406 callback = callback->next;
407 }
408
409 return ERROR_OK;
410 }
411
412 static void jtag_checks(void)
413 {
414 assert(jtag_trst == 0);
415 }
416
417 static void jtag_prelude(tap_state_t state)
418 {
419 jtag_checks();
420
421 assert(state!=TAP_INVALID);
422
423 cmd_queue_cur_state = state;
424 }
425
426 void jtag_alloc_in_value32(scan_field_t *field)
427 {
428 interface_jtag_alloc_in_value32(field);
429 }
430
431 void jtag_add_ir_scan_noverify(int in_count, const scan_field_t *in_fields,
432 tap_state_t state)
433 {
434 jtag_prelude(state);
435
436 int retval = interface_jtag_add_ir_scan(in_count, in_fields, state);
437 jtag_set_error(retval);
438 }
439
440
441 /**
442 * Generate an IR SCAN with a list of scan fields with one entry for each enabled TAP.
443 *
444 * If the input field list contains an instruction value for a TAP then that is used
445 * otherwise the TAP is set to bypass.
446 *
447 * TAPs for which no fields are passed are marked as bypassed for subsequent DR SCANs.
448 *
449 */
450 void jtag_add_ir_scan(int in_num_fields, scan_field_t *in_fields, tap_state_t state)
451 {
452 if (jtag_verify&&jtag_verify_capture_ir)
453 {
454 /* 8 x 32 bit id's is enough for all invocations */
455
456 for (int j = 0; j < in_num_fields; j++)
457 {
458 /* if we are to run a verification of the ir scan, we need to get the input back.
459 * We may have to allocate space if the caller didn't ask for the input back.
460 */
461 in_fields[j].check_value=in_fields[j].tap->expected;
462 in_fields[j].check_mask=in_fields[j].tap->expected_mask;
463 }
464 jtag_add_scan_check(jtag_add_ir_scan_noverify, in_num_fields, in_fields, state);
465 } else
466 {
467 jtag_add_ir_scan_noverify(in_num_fields, in_fields, state);
468 }
469 }
470
471 /**
472 * Duplicate the scan fields passed into the function into an IR SCAN command
473 *
474 * This function assumes that the caller handles extra fields for bypassed TAPs
475 *
476 */
477 void jtag_add_plain_ir_scan(int in_num_fields, const scan_field_t *in_fields,
478 tap_state_t state)
479 {
480 jtag_prelude(state);
481
482 int retval = interface_jtag_add_plain_ir_scan(
483 in_num_fields, in_fields, state);
484 jtag_set_error(retval);
485 }
486
487 void jtag_add_callback(jtag_callback1_t f, u8 *in)
488 {
489 interface_jtag_add_callback(f, in);
490 }
491
492 void jtag_add_callback4(jtag_callback_t f, u8 *in,
493 jtag_callback_data_t data1, jtag_callback_data_t data2,
494 jtag_callback_data_t data3)
495 {
496 interface_jtag_add_callback4(f, in, data1, data2, data3);
497 }
498
499 int jtag_check_value_inner(u8 *captured, u8 *in_check_value, u8 *in_check_mask, int num_bits);
500
501 static int jtag_check_value_mask_callback(u8 *in, jtag_callback_data_t data1, jtag_callback_data_t data2, jtag_callback_data_t data3)
502 {
503 return jtag_check_value_inner(in, (u8 *)data1, (u8 *)data2, (int)data3);
504 }
505
506 static void jtag_add_scan_check(void (*jtag_add_scan)(int in_num_fields, const scan_field_t *in_fields, tap_state_t state),
507 int in_num_fields, scan_field_t *in_fields, tap_state_t state)
508 {
509 for (int i = 0; i < in_num_fields; i++)
510 {
511 struct scan_field_s *field = &in_fields[i];
512 field->allocated = 0;
513 field->modified = 0;
514 if (field->check_value || field->in_value)
515 continue;
516 interface_jtag_add_scan_check_alloc(field);
517 field->modified = 1;
518 }
519
520 jtag_add_scan(in_num_fields, in_fields, state);
521
522 for (int i = 0; i < in_num_fields; i++)
523 {
524 if ((in_fields[i].check_value != NULL) && (in_fields[i].in_value != NULL))
525 {
526 /* this is synchronous for a minidriver */
527 jtag_add_callback4(jtag_check_value_mask_callback, in_fields[i].in_value,
528 (jtag_callback_data_t)in_fields[i].check_value,
529 (jtag_callback_data_t)in_fields[i].check_mask,
530 (jtag_callback_data_t)in_fields[i].num_bits);
531 }
532 if (in_fields[i].allocated)
533 {
534 free(in_fields[i].in_value);
535 }
536 if (in_fields[i].modified)
537 {
538 in_fields[i].in_value = NULL;
539 }
540 }
541 }
542
543 void jtag_add_dr_scan_check(int in_num_fields, scan_field_t *in_fields, tap_state_t state)
544 {
545 if (jtag_verify)
546 {
547 jtag_add_scan_check(jtag_add_dr_scan, in_num_fields, in_fields, state);
548 } else
549 {
550 jtag_add_dr_scan(in_num_fields, in_fields, state);
551 }
552 }
553
554
555 /**
556 * Generate a DR SCAN using the fields passed to the function.
557 * For connected TAPs, the function checks in_fields and uses fields
558 * specified there. For bypassed TAPs, the function generates a dummy
559 * 1-bit field. The bypass status of TAPs is set by jtag_add_ir_scan().
560 */
561 void jtag_add_dr_scan(int in_num_fields, const scan_field_t *in_fields,
562 tap_state_t state)
563 {
564 jtag_prelude(state);
565
566 int retval;
567 retval = interface_jtag_add_dr_scan(in_num_fields, in_fields, state);
568 jtag_set_error(retval);
569 }
570
571 /**
572 * Duplicate the scan fields passed into the function into a DR SCAN
573 * command. Unlike jtag_add_dr_scan(), this function assumes that the
574 * caller handles extra fields for bypassed TAPs.
575 */
576 void jtag_add_plain_dr_scan(int in_num_fields, const scan_field_t *in_fields,
577 tap_state_t state)
578 {
579 jtag_prelude(state);
580
581 int retval;
582 retval = interface_jtag_add_plain_dr_scan(in_num_fields, in_fields, state);
583 jtag_set_error(retval);
584 }
585
586 void jtag_add_dr_out(jtag_tap_t* tap,
587 int num_fields, const int* num_bits, const u32* value,
588 tap_state_t end_state)
589 {
590 assert(end_state != TAP_INVALID);
591
592 cmd_queue_cur_state = end_state;
593
594 interface_jtag_add_dr_out(tap,
595 num_fields, num_bits, value,
596 end_state);
597 }
598
599 void jtag_add_tlr(void)
600 {
601 jtag_prelude(TAP_RESET);
602 jtag_set_error(interface_jtag_add_tlr());
603 jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
604 }
605
606 void jtag_add_pathmove(int num_states, const tap_state_t *path)
607 {
608 tap_state_t cur_state = cmd_queue_cur_state;
609 int i;
610 int retval;
611
612 /* the last state has to be a stable state */
613 if (!tap_is_state_stable(path[num_states - 1]))
614 {
615 LOG_ERROR("BUG: TAP path doesn't finish in a stable state");
616 exit(-1);
617 }
618
619 for (i=0; i<num_states; i++)
620 {
621 if (path[i] == TAP_RESET)
622 {
623 LOG_ERROR("BUG: TAP_RESET is not a valid state for pathmove sequences");
624 exit(-1);
625 }
626
627 if ( tap_state_transition(cur_state, true) != path[i]
628 && tap_state_transition(cur_state, false) != path[i])
629 {
630 LOG_ERROR("BUG: %s -> %s isn't a valid TAP transition", tap_state_name(cur_state), tap_state_name(path[i]));
631 exit(-1);
632 }
633 cur_state = path[i];
634 }
635
636 jtag_checks();
637
638 retval = interface_jtag_add_pathmove(num_states, path);
639 cmd_queue_cur_state = path[num_states - 1];
640 if (retval!=ERROR_OK)
641 jtag_error=retval;
642 }
643
644 void jtag_add_runtest(int num_cycles, tap_state_t state)
645 {
646 int retval;
647
648 jtag_prelude(state);
649
650 /* executed by sw or hw fifo */
651 retval=interface_jtag_add_runtest(num_cycles, state);
652 if (retval!=ERROR_OK)
653 jtag_error=retval;
654 }
655
656
657 void jtag_add_clocks( int num_cycles )
658 {
659 int retval;
660
661 if( !tap_is_state_stable(cmd_queue_cur_state) )
662 {
663 LOG_ERROR( "jtag_add_clocks() was called with TAP in non-stable state \"%s\"",
664 tap_state_name(cmd_queue_cur_state) );
665 jtag_error = ERROR_JTAG_NOT_STABLE_STATE;
666 return;
667 }
668
669 if( num_cycles > 0 )
670 {
671 jtag_checks();
672
673 retval = interface_jtag_add_clocks(num_cycles);
674 if (retval != ERROR_OK)
675 jtag_error=retval;
676 }
677 }
678
679 void jtag_add_reset(int req_tlr_or_trst, int req_srst)
680 {
681 int trst_with_tlr = 0;
682 int retval;
683
684 /* FIX!!! there are *many* different cases here. A better
685 * approach is needed for legal combinations of transitions...
686 */
687 if ((jtag_reset_config & RESET_HAS_SRST)&&
688 (jtag_reset_config & RESET_HAS_TRST)&&
689 ((jtag_reset_config & RESET_SRST_PULLS_TRST)==0))
690 {
691 if (((req_tlr_or_trst&&!jtag_trst)||
692 (!req_tlr_or_trst&&jtag_trst))&&
693 ((req_srst&&!jtag_srst)||
694 (!req_srst&&jtag_srst)))
695 {
696 /* FIX!!! srst_pulls_trst allows 1,1 => 0,0 transition.... */
697 //LOG_ERROR("BUG: transition of req_tlr_or_trst and req_srst in the same jtag_add_reset() call is undefined");
698 }
699 }
700
701 /* Make sure that jtag_reset_config allows the requested reset */
702 /* if SRST pulls TRST, we can't fulfill srst == 1 with trst == 0 */
703 if (((jtag_reset_config & RESET_SRST_PULLS_TRST) && (req_srst == 1)) && (!req_tlr_or_trst))
704 {
705 LOG_ERROR("BUG: requested reset would assert trst");
706 jtag_error=ERROR_FAIL;
707 return;
708 }
709
710 /* if TRST pulls SRST, we reset with TAP T-L-R */
711 if (((jtag_reset_config & RESET_TRST_PULLS_SRST) && (req_tlr_or_trst)) && (req_srst == 0))
712 {
713 trst_with_tlr = 1;
714 }
715
716 if (req_srst && !(jtag_reset_config & RESET_HAS_SRST))
717 {
718 LOG_ERROR("BUG: requested SRST assertion, but the current configuration doesn't support this");
719 jtag_error=ERROR_FAIL;
720 return;
721 }
722
723 if (req_tlr_or_trst)
724 {
725 if (!trst_with_tlr && (jtag_reset_config & RESET_HAS_TRST))
726 {
727 jtag_trst = 1;
728 } else
729 {
730 trst_with_tlr = 1;
731 }
732 } else
733 {
734 jtag_trst = 0;
735 }
736
737 jtag_srst = req_srst;
738
739 retval = interface_jtag_add_reset(jtag_trst, jtag_srst);
740 if (retval!=ERROR_OK)
741 {
742 jtag_error=retval;
743 return;
744 }
745 jtag_execute_queue();
746
747 if (jtag_srst)
748 {
749 LOG_DEBUG("SRST line asserted");
750 }
751 else
752 {
753 LOG_DEBUG("SRST line released");
754 if (jtag_nsrst_delay)
755 jtag_add_sleep(jtag_nsrst_delay * 1000);
756 }
757
758 if (trst_with_tlr)
759 {
760 LOG_DEBUG("JTAG reset with RESET instead of TRST");
761 jtag_set_end_state(TAP_RESET);
762 jtag_add_tlr();
763 return;
764 }
765
766 if (jtag_trst)
767 {
768 /* we just asserted nTRST, so we're now in Test-Logic-Reset,
769 * and inform possible listeners about this
770 */
771 LOG_DEBUG("TRST line asserted");
772 tap_set_state(TAP_RESET);
773 jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
774 }
775 else
776 {
777 if (jtag_ntrst_delay)
778 jtag_add_sleep(jtag_ntrst_delay * 1000);
779 }
780 }
781
782 tap_state_t jtag_set_end_state(tap_state_t state)
783 {
784 if ((state == TAP_DRSHIFT)||(state == TAP_IRSHIFT))
785 {
786 LOG_ERROR("BUG: TAP_DRSHIFT/IRSHIFT can't be end state. Calling code should use a larger scan field");
787 }
788
789 if (state!=TAP_INVALID)
790 cmd_queue_end_state = state;
791 return cmd_queue_end_state;
792 }
793
794 tap_state_t jtag_get_end_state(void)
795 {
796 return cmd_queue_end_state;
797 }
798
799 void jtag_add_sleep(u32 us)
800 {
801 keep_alive(); /* we might be running on a very slow JTAG clk */
802 int retval=interface_jtag_add_sleep(us);
803 if (retval!=ERROR_OK)
804 jtag_error=retval;
805 return;
806 }
807
808 int jtag_check_value_inner(u8 *captured, u8 *in_check_value, u8 *in_check_mask, int num_bits)
809 {
810 int retval = ERROR_OK;
811
812 int compare_failed = 0;
813
814 if (in_check_mask)
815 compare_failed = buf_cmp_mask(captured, in_check_value, in_check_mask, num_bits);
816 else
817 compare_failed = buf_cmp(captured, in_check_value, num_bits);
818
819 if (compare_failed){
820 /* An error handler could have caught the failing check
821 * only report a problem when there wasn't a handler, or if the handler
822 * acknowledged the error
823 */
824 /*
825 LOG_WARNING("TAP %s:",
826 jtag_tap_name(field->tap));
827 */
828 if (compare_failed)
829 {
830 char *captured_char = buf_to_str(captured, (num_bits > DEBUG_JTAG_IOZ) ? DEBUG_JTAG_IOZ : num_bits, 16);
831 char *in_check_value_char = buf_to_str(in_check_value, (num_bits > DEBUG_JTAG_IOZ) ? DEBUG_JTAG_IOZ : num_bits, 16);
832
833 if (in_check_mask)
834 {
835 char *in_check_mask_char;
836 in_check_mask_char = buf_to_str(in_check_mask, (num_bits > DEBUG_JTAG_IOZ) ? DEBUG_JTAG_IOZ : num_bits, 16);
837 LOG_WARNING("value captured during scan didn't pass the requested check:");
838 LOG_WARNING("captured: 0x%s check_value: 0x%s check_mask: 0x%s",
839 captured_char, in_check_value_char, in_check_mask_char);
840 free(in_check_mask_char);
841 }
842 else
843 {
844 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);
845 }
846
847 free(captured_char);
848 free(in_check_value_char);
849
850 retval = ERROR_JTAG_QUEUE_FAILED;
851 }
852
853 }
854 return retval;
855 }
856
857 void jtag_check_value_mask(scan_field_t *field, u8 *value, u8 *mask)
858 {
859 assert(field->in_value != NULL);
860
861 if (value==NULL)
862 {
863 /* no checking to do */
864 return;
865 }
866
867 jtag_execute_queue_noclear();
868
869 int retval=jtag_check_value_inner(field->in_value, value, mask, field->num_bits);
870 jtag_set_error(retval);
871 }
872
873
874
875 int default_interface_jtag_execute_queue(void)
876 {
877 if (NULL == jtag)
878 {
879 LOG_ERROR("No JTAG interface configured yet. "
880 "Issue 'init' command in startup scripts "
881 "before communicating with targets.");
882 return ERROR_FAIL;
883 }
884
885 return jtag->execute_queue();
886 }
887
888 void jtag_execute_queue_noclear(void)
889 {
890 jtag_flush_queue_count++;
891 jtag_set_error(interface_jtag_execute_queue());
892 }
893
894 int jtag_get_flush_queue_count(void)
895 {
896 return jtag_flush_queue_count;
897 }
898
899 int jtag_execute_queue(void)
900 {
901 jtag_execute_queue_noclear();
902 return jtag_error_clear();
903 }
904
905 static int jtag_reset_callback(enum jtag_event event, void *priv)
906 {
907 jtag_tap_t *tap = priv;
908
909 LOG_DEBUG("-");
910
911 if (event == JTAG_TRST_ASSERTED)
912 {
913 buf_set_ones(tap->cur_instr, tap->ir_length);
914 tap->bypass = 1;
915 }
916
917 return ERROR_OK;
918 }
919
920 void jtag_sleep(u32 us)
921 {
922 alive_sleep(us/1000);
923 }
924
925 /// maximum number of JTAG devices expected in the chain
926 #define JTAG_MAX_CHAIN_SIZE 20
927
928 #define EXTRACT_MFG(X) (((X) & 0xffe) >> 1)
929 #define EXTRACT_PART(X) (((X) & 0xffff000) >> 12)
930 #define EXTRACT_VER(X) (((X) & 0xf0000000) >> 28)
931
932 static int jtag_examine_chain_execute(u8 *idcode_buffer, unsigned num_idcode)
933 {
934 scan_field_t field = {
935 .tap = NULL,
936 .num_bits = num_idcode * 32,
937 .out_value = idcode_buffer,
938 .in_value = idcode_buffer,
939 };
940
941 // initialize to the end of chain ID value
942 for (unsigned i = 0; i < JTAG_MAX_CHAIN_SIZE; i++)
943 buf_set_u32(idcode_buffer, i * 32, 32, 0x000000FF);
944
945 jtag_add_plain_dr_scan(1, &field, TAP_RESET);
946 return jtag_execute_queue();
947 }
948
949 static bool jtag_examine_chain_check(u8 *idcodes, unsigned count)
950 {
951 u8 zero_check = 0x0;
952 u8 one_check = 0xff;
953
954 for (unsigned i = 0; i < count * 4; i++)
955 {
956 zero_check |= idcodes[i];
957 one_check &= idcodes[i];
958 }
959
960 /* if there wasn't a single non-zero bit or if all bits were one,
961 * the scan is not valid */
962 if (zero_check == 0x00 || one_check == 0xff)
963 {
964 LOG_ERROR("JTAG communication failure: check connection, "
965 "JTAG interface, target power etc.");
966 return false;
967 }
968 return true;
969 }
970
971 static void jtag_examine_chain_display(enum log_levels level, const char *msg,
972 const char *name, u32 idcode)
973 {
974 log_printf_lf(level, __FILE__, __LINE__, __FUNCTION__,
975 "JTAG tap: %s %16.16s: 0x%08x "
976 "(mfg: 0x%3.3x, part: 0x%4.4x, ver: 0x%1.1x)",
977 name, msg, idcode,
978 EXTRACT_MFG(idcode), EXTRACT_PART(idcode), EXTRACT_VER(idcode) );
979 }
980
981 static bool jtag_idcode_is_final(u32 idcode)
982 {
983 return idcode == 0x000000FF || idcode == 0xFFFFFFFF;
984 }
985
986 /**
987 * This helper checks that remaining bits in the examined chain data are
988 * all as expected, but a single JTAG device requires only 64 bits to be
989 * read back correctly. This can help identify and diagnose problems
990 * with the JTAG chain earlier, gives more helpful/explicit error messages.
991 */
992 static void jtag_examine_chain_end(u8 *idcodes, unsigned count, unsigned max)
993 {
994 bool triggered = false;
995 for ( ; count < max - 31; count += 32)
996 {
997 u32 idcode = buf_get_u32(idcodes, count, 32);
998 // do not trigger the warning if the data looks good
999 if (!triggered && jtag_idcode_is_final(idcode))
1000 continue;
1001 LOG_WARNING("Unexpected idcode after end of chain: %d 0x%08x",
1002 count, idcode);
1003 triggered = true;
1004 }
1005 }
1006
1007 static bool jtag_examine_chain_match_tap(const struct jtag_tap_s *tap)
1008 {
1009 if (0 == tap->expected_ids_cnt)
1010 {
1011 /// @todo Enable LOG_INFO to ask for reports about unknown TAP IDs.
1012 #if 0
1013 LOG_INFO("Uknown JTAG TAP ID: 0x%08x", tap->idcode)
1014 LOG_INFO("Please report the chip name and reported ID code to the openocd project");
1015 #endif
1016 return true;
1017 }
1018
1019 /* Loop over the expected identification codes and test for a match */
1020 u8 ii;
1021 for (ii = 0; ii < tap->expected_ids_cnt; ii++)
1022 {
1023 if (tap->idcode == tap->expected_ids[ii])
1024 break;
1025 }
1026
1027 /* If none of the expected ids matched, log an error */
1028 if (ii != tap->expected_ids_cnt)
1029 {
1030 LOG_INFO("JTAG Tap/device matched");
1031 return true;
1032 }
1033 jtag_examine_chain_display(LOG_LVL_ERROR, "got",
1034 tap->dotted_name, tap->idcode);
1035 for (ii = 0; ii < tap->expected_ids_cnt; ii++)
1036 {
1037 char msg[32];
1038 snprintf(msg, sizeof(msg), "expected %hhu of %hhu",
1039 ii + 1, tap->expected_ids_cnt);
1040 jtag_examine_chain_display(LOG_LVL_ERROR, msg,
1041 tap->dotted_name, tap->expected_ids[ii]);
1042 }
1043 return false;
1044 }
1045
1046 /* Try to examine chain layout according to IEEE 1149.1 §12
1047 */
1048 static int jtag_examine_chain(void)
1049 {
1050 u8 idcode_buffer[JTAG_MAX_CHAIN_SIZE * 4];
1051 unsigned device_count = 0;
1052
1053 jtag_examine_chain_execute(idcode_buffer, JTAG_MAX_CHAIN_SIZE);
1054
1055 if (!jtag_examine_chain_check(idcode_buffer, JTAG_MAX_CHAIN_SIZE))
1056 return ERROR_JTAG_INIT_FAILED;
1057
1058 /* point at the 1st tap */
1059 jtag_tap_t *tap = jtag_tap_next_enabled(NULL);
1060 if (tap == NULL)
1061 {
1062 LOG_ERROR("JTAG: No taps enabled?");
1063 return ERROR_JTAG_INIT_FAILED;
1064 }
1065
1066 for (unsigned bit_count = 0; bit_count < (JTAG_MAX_CHAIN_SIZE * 32) - 31;)
1067 {
1068 u32 idcode = buf_get_u32(idcode_buffer, bit_count, 32);
1069 if ((idcode & 1) == 0)
1070 {
1071 /* LSB must not be 0, this indicates a device in bypass */
1072 LOG_WARNING("Tap/Device does not have IDCODE");
1073 idcode = 0;
1074
1075 bit_count += 1;
1076 }
1077 else
1078 {
1079 /*
1080 * End of chain (invalid manufacturer ID) some devices, such
1081 * as AVR will output all 1's instead of TDI input value at
1082 * end of chain.
1083 */
1084 if (jtag_idcode_is_final(idcode))
1085 {
1086 jtag_examine_chain_end(idcode_buffer,
1087 bit_count + 32, JTAG_MAX_CHAIN_SIZE * 32);
1088 break;
1089 }
1090
1091 jtag_examine_chain_display(LOG_LVL_INFO, "tap/device found",
1092 tap ? tap->dotted_name : "(not-named)",
1093 idcode);
1094
1095 bit_count += 32;
1096 }
1097 device_count++;
1098 if (!tap)
1099 continue;
1100
1101 tap->idcode = idcode;
1102
1103 // ensure the TAP ID does matches what was expected
1104 if (!jtag_examine_chain_match_tap(tap))
1105 return ERROR_JTAG_INIT_FAILED;
1106
1107 tap = jtag_tap_next_enabled(tap);
1108 }
1109
1110 /* see if number of discovered devices matches configuration */
1111 if (device_count != jtag_tap_count_enabled())
1112 {
1113 LOG_ERROR("number of discovered devices in JTAG chain (%i) "
1114 "does not match (enabled) configuration (%i), total taps: %d",
1115 device_count, jtag_tap_count_enabled(), jtag_tap_count());
1116 LOG_ERROR("check the config file and ensure proper JTAG communication"
1117 " (connections, speed, ...)");
1118 return ERROR_JTAG_INIT_FAILED;
1119 }
1120
1121 return ERROR_OK;
1122 }
1123
1124 static int jtag_validate_chain(void)
1125 {
1126 jtag_tap_t *tap;
1127 int total_ir_length = 0;
1128 u8 *ir_test = NULL;
1129 scan_field_t field;
1130 int chain_pos = 0;
1131
1132 tap = NULL;
1133 total_ir_length = 0;
1134 for(;;){
1135 tap = jtag_tap_next_enabled(tap);
1136 if( tap == NULL ){
1137 break;
1138 }
1139 total_ir_length += tap->ir_length;
1140 }
1141
1142 total_ir_length += 2;
1143 ir_test = malloc(CEIL(total_ir_length, 8));
1144 buf_set_ones(ir_test, total_ir_length);
1145
1146 field.tap = NULL;
1147 field.num_bits = total_ir_length;
1148 field.out_value = ir_test;
1149 field.in_value = ir_test;
1150
1151
1152 jtag_add_plain_ir_scan(1, &field, TAP_RESET);
1153 jtag_execute_queue();
1154
1155 tap = NULL;
1156 chain_pos = 0;
1157 int val;
1158 for(;;){
1159 tap = jtag_tap_next_enabled(tap);
1160 if( tap == NULL ){
1161 break;
1162 }
1163
1164 val = buf_get_u32(ir_test, chain_pos, 2);
1165 if (val != 0x1)
1166 {
1167 char *cbuf = buf_to_str(ir_test, total_ir_length, 16);
1168 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);
1169 free(cbuf);
1170 free(ir_test);
1171 return ERROR_JTAG_INIT_FAILED;
1172 }
1173 chain_pos += tap->ir_length;
1174 }
1175
1176 val = buf_get_u32(ir_test, chain_pos, 2);
1177 if (val != 0x3)
1178 {
1179 char *cbuf = buf_to_str(ir_test, total_ir_length, 16);
1180 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);
1181 free(cbuf);
1182 free(ir_test);
1183 return ERROR_JTAG_INIT_FAILED;
1184 }
1185
1186 free(ir_test);
1187
1188 return ERROR_OK;
1189 }
1190
1191 enum jtag_tap_cfg_param {
1192 JCFG_EVENT
1193 };
1194
1195 static Jim_Nvp nvp_config_opts[] = {
1196 { .name = "-event", .value = JCFG_EVENT },
1197
1198 { .name = NULL, .value = -1 }
1199 };
1200
1201 static int jtag_tap_configure_cmd( Jim_GetOptInfo *goi, jtag_tap_t * tap)
1202 {
1203 Jim_Nvp *n;
1204 Jim_Obj *o;
1205 int e;
1206
1207 /* parse config or cget options */
1208 while (goi->argc > 0) {
1209 Jim_SetEmptyResult (goi->interp);
1210
1211 e = Jim_GetOpt_Nvp(goi, nvp_config_opts, &n);
1212 if (e != JIM_OK) {
1213 Jim_GetOpt_NvpUnknown(goi, nvp_config_opts, 0);
1214 return e;
1215 }
1216
1217 switch (n->value) {
1218 case JCFG_EVENT:
1219 if (goi->argc == 0) {
1220 Jim_WrongNumArgs( goi->interp, goi->argc, goi->argv, "-event ?event-name? ..." );
1221 return JIM_ERR;
1222 }
1223
1224 e = Jim_GetOpt_Nvp( goi, nvp_jtag_tap_event, &n );
1225 if (e != JIM_OK) {
1226 Jim_GetOpt_NvpUnknown(goi, nvp_jtag_tap_event, 1);
1227 return e;
1228 }
1229
1230 if (goi->isconfigure) {
1231 if (goi->argc != 1) {
1232 Jim_WrongNumArgs(goi->interp, goi->argc, goi->argv, "-event ?event-name? ?EVENT-BODY?");
1233 return JIM_ERR;
1234 }
1235 } else {
1236 if (goi->argc != 0) {
1237 Jim_WrongNumArgs(goi->interp, goi->argc, goi->argv, "-event ?event-name?");
1238 return JIM_ERR;
1239 }
1240 }
1241
1242 {
1243 jtag_tap_event_action_t *jteap;
1244
1245 jteap = tap->event_action;
1246 /* replace existing? */
1247 while (jteap) {
1248 if (jteap->event == (enum jtag_tap_event)n->value) {
1249 break;
1250 }
1251 jteap = jteap->next;
1252 }
1253
1254 if (goi->isconfigure) {
1255 if (jteap == NULL) {
1256 /* create new */
1257 jteap = calloc(1, sizeof (*jteap));
1258 }
1259 jteap->event = n->value;
1260 Jim_GetOpt_Obj( goi, &o);
1261 if (jteap->body) {
1262 Jim_DecrRefCount(interp, jteap->body);
1263 }
1264 jteap->body = Jim_DuplicateObj(goi->interp, o);
1265 Jim_IncrRefCount(jteap->body);
1266
1267 /* add to head of event list */
1268 jteap->next = tap->event_action;
1269 tap->event_action = jteap;
1270 Jim_SetEmptyResult(goi->interp);
1271 } else {
1272 /* get */
1273 if (jteap == NULL) {
1274 Jim_SetEmptyResult(goi->interp);
1275 } else {
1276 Jim_SetResult(goi->interp, Jim_DuplicateObj(goi->interp, jteap->body));
1277 }
1278 }
1279 }
1280 /* loop for more */
1281 break;
1282 }
1283 } /* while (goi->argc) */
1284
1285 return JIM_OK;
1286 }
1287
1288
1289 static void jtag_tap_init(jtag_tap_t *tap)
1290 {
1291 assert(0 != tap->ir_length);
1292
1293 tap->expected = malloc(tap->ir_length);
1294 tap->expected_mask = malloc(tap->ir_length);
1295 tap->cur_instr = malloc(tap->ir_length);
1296
1297 buf_set_u32(tap->expected, 0, tap->ir_length, tap->ir_capture_value);
1298 buf_set_u32(tap->expected_mask, 0, tap->ir_length, tap->ir_capture_mask);
1299 buf_set_ones(tap->cur_instr, tap->ir_length);
1300
1301 // place TAP in bypass mode
1302 tap->bypass = 1;
1303 // register the reset callback for the TAP
1304 jtag_register_event_callback(&jtag_reset_callback, tap);
1305
1306 LOG_DEBUG("Created Tap: %s @ abs position %d, "
1307 "irlen %d, capture: 0x%x mask: 0x%x", tap->dotted_name,
1308 tap->abs_chain_position, tap->ir_length,
1309 tap->ir_capture_value, tap->ir_capture_mask);
1310 jtag_tap_add(tap);
1311 }
1312
1313 static void jtag_tap_free(jtag_tap_t *tap)
1314 {
1315 /// @todo is anything missing? no memory leaks please
1316 free((void *)tap->expected_ids);
1317 free((void *)tap->chip);
1318 free((void *)tap->tapname);
1319 free((void *)tap->dotted_name);
1320 free(tap);
1321 }
1322
1323 static int jim_newtap_cmd( Jim_GetOptInfo *goi )
1324 {
1325 jtag_tap_t *pTap;
1326 jim_wide w;
1327 int x;
1328 int e;
1329 int reqbits;
1330 Jim_Nvp *n;
1331 char *cp;
1332 const Jim_Nvp opts[] = {
1333 #define NTAP_OPT_IRLEN 0
1334 { .name = "-irlen" , .value = NTAP_OPT_IRLEN },
1335 #define NTAP_OPT_IRMASK 1
1336 { .name = "-irmask" , .value = NTAP_OPT_IRMASK },
1337 #define NTAP_OPT_IRCAPTURE 2
1338 { .name = "-ircapture" , .value = NTAP_OPT_IRCAPTURE },
1339 #define NTAP_OPT_ENABLED 3
1340 { .name = "-enable" , .value = NTAP_OPT_ENABLED },
1341 #define NTAP_OPT_DISABLED 4
1342 { .name = "-disable" , .value = NTAP_OPT_DISABLED },
1343 #define NTAP_OPT_EXPECTED_ID 5
1344 { .name = "-expected-id" , .value = NTAP_OPT_EXPECTED_ID },
1345 { .name = NULL , .value = -1 },
1346 };
1347
1348 pTap = malloc( sizeof(jtag_tap_t) );
1349 memset( pTap, 0, sizeof(*pTap) );
1350 if( !pTap ){
1351 Jim_SetResult_sprintf( goi->interp, "no memory");
1352 return JIM_ERR;
1353 }
1354 /*
1355 * we expect CHIP + TAP + OPTIONS
1356 * */
1357 if( goi->argc < 3 ){
1358 Jim_SetResult_sprintf(goi->interp, "Missing CHIP TAP OPTIONS ....");
1359 return JIM_ERR;
1360 }
1361 Jim_GetOpt_String( goi, &cp, NULL );
1362 pTap->chip = strdup(cp);
1363
1364 Jim_GetOpt_String( goi, &cp, NULL );
1365 pTap->tapname = strdup(cp);
1366
1367 /* name + dot + name + null */
1368 x = strlen(pTap->chip) + 1 + strlen(pTap->tapname) + 1;
1369 cp = malloc( x );
1370 sprintf( cp, "%s.%s", pTap->chip, pTap->tapname );
1371 pTap->dotted_name = cp;
1372
1373 LOG_DEBUG("Creating New Tap, Chip: %s, Tap: %s, Dotted: %s, %d params",
1374 pTap->chip, pTap->tapname, pTap->dotted_name, goi->argc);
1375
1376 /* default is enabled */
1377 pTap->enabled = 1;
1378
1379 /* deal with options */
1380 #define NTREQ_IRLEN 1
1381 #define NTREQ_IRCAPTURE 2
1382 #define NTREQ_IRMASK 4
1383
1384 /* clear them as we find them */
1385 reqbits = (NTREQ_IRLEN | NTREQ_IRCAPTURE | NTREQ_IRMASK);
1386
1387 while( goi->argc ){
1388 e = Jim_GetOpt_Nvp( goi, opts, &n );
1389 if( e != JIM_OK ){
1390 Jim_GetOpt_NvpUnknown( goi, opts, 0 );
1391 return e;
1392 }
1393 LOG_DEBUG("Processing option: %s", n->name );
1394 switch( n->value ){
1395 case NTAP_OPT_ENABLED:
1396 pTap->enabled = 1;
1397 break;
1398 case NTAP_OPT_DISABLED:
1399 pTap->enabled = 0;
1400 break;
1401 case NTAP_OPT_EXPECTED_ID:
1402 {
1403 u32 *new_expected_ids;
1404
1405 e = Jim_GetOpt_Wide( goi, &w );
1406 if( e != JIM_OK) {
1407 Jim_SetResult_sprintf(goi->interp, "option: %s bad parameter", n->name);
1408 return e;
1409 }
1410
1411 new_expected_ids = malloc(sizeof(u32) * (pTap->expected_ids_cnt + 1));
1412 if (new_expected_ids == NULL) {
1413 Jim_SetResult_sprintf( goi->interp, "no memory");
1414 return JIM_ERR;
1415 }
1416
1417 memcpy(new_expected_ids, pTap->expected_ids, sizeof(u32) * pTap->expected_ids_cnt);
1418
1419 new_expected_ids[pTap->expected_ids_cnt] = w;
1420
1421 free(pTap->expected_ids);
1422 pTap->expected_ids = new_expected_ids;
1423 pTap->expected_ids_cnt++;
1424 break;
1425 }
1426 case NTAP_OPT_IRLEN:
1427 case NTAP_OPT_IRMASK:
1428 case NTAP_OPT_IRCAPTURE:
1429 e = Jim_GetOpt_Wide( goi, &w );
1430 if( e != JIM_OK ){
1431 Jim_SetResult_sprintf( goi->interp, "option: %s bad parameter", n->name );
1432 return e;
1433 }
1434 if( (w < 0) || (w > 0xffff) ){
1435 /* wacky value */
1436 Jim_SetResult_sprintf( goi->interp, "option: %s - wacky value: %d (0x%x)",
1437 n->name, (int)(w), (int)(w));
1438 return JIM_ERR;
1439 }
1440 switch(n->value){
1441 case NTAP_OPT_IRLEN:
1442 pTap->ir_length = w;
1443 reqbits &= (~(NTREQ_IRLEN));
1444 break;
1445 case NTAP_OPT_IRMASK:
1446 pTap->ir_capture_mask = w;
1447 reqbits &= (~(NTREQ_IRMASK));
1448 break;
1449 case NTAP_OPT_IRCAPTURE:
1450 pTap->ir_capture_value = w;
1451 reqbits &= (~(NTREQ_IRCAPTURE));
1452 break;
1453 }
1454 } /* switch(n->value) */
1455 } /* while( goi->argc ) */
1456
1457 /* Did all the required option bits get cleared? */
1458 if (0 == reqbits)
1459 {
1460 jtag_tap_init(pTap);
1461 return ERROR_OK;
1462 }
1463
1464 Jim_SetResult_sprintf(goi->interp,
1465 "newtap: %s missing required parameters",
1466 pTap->dotted_name);
1467 jtag_tap_free(pTap);
1468 return JIM_ERR;
1469 }
1470
1471 static int jim_jtag_command( Jim_Interp *interp, int argc, Jim_Obj *const *argv )
1472 {
1473 Jim_GetOptInfo goi;
1474 int e;
1475 Jim_Nvp *n;
1476 Jim_Obj *o;
1477 struct command_context_s *context;
1478
1479 enum {
1480 JTAG_CMD_INTERFACE,
1481 JTAG_CMD_INIT_RESET,
1482 JTAG_CMD_NEWTAP,
1483 JTAG_CMD_TAPENABLE,
1484 JTAG_CMD_TAPDISABLE,
1485 JTAG_CMD_TAPISENABLED,
1486 JTAG_CMD_CONFIGURE,
1487 JTAG_CMD_CGET
1488 };
1489
1490 const Jim_Nvp jtag_cmds[] = {
1491 { .name = "interface" , .value = JTAG_CMD_INTERFACE },
1492 { .name = "arp_init-reset", .value = JTAG_CMD_INIT_RESET },
1493 { .name = "newtap" , .value = JTAG_CMD_NEWTAP },
1494 { .name = "tapisenabled" , .value = JTAG_CMD_TAPISENABLED },
1495 { .name = "tapenable" , .value = JTAG_CMD_TAPENABLE },
1496 { .name = "tapdisable" , .value = JTAG_CMD_TAPDISABLE },
1497 { .name = "configure" , .value = JTAG_CMD_CONFIGURE },
1498 { .name = "cget" , .value = JTAG_CMD_CGET },
1499
1500 { .name = NULL, .value = -1 },
1501 };
1502
1503 context = Jim_GetAssocData(interp, "context");
1504 /* go past the command */
1505 Jim_GetOpt_Setup( &goi, interp, argc-1, argv+1 );
1506
1507 e = Jim_GetOpt_Nvp( &goi, jtag_cmds, &n );
1508 if( e != JIM_OK ){
1509 Jim_GetOpt_NvpUnknown( &goi, jtag_cmds, 0 );
1510 return e;
1511 }
1512 Jim_SetEmptyResult( goi.interp );
1513 switch( n->value ){
1514 case JTAG_CMD_INTERFACE:
1515 /* return the name of the interface */
1516 /* TCL code might need to know the exact type... */
1517 /* FUTURE: we allow this as a means to "set" the interface. */
1518 if( goi.argc != 0 ){
1519 Jim_WrongNumArgs( goi.interp, 1, goi.argv-1, "(no params)");
1520 return JIM_ERR;
1521 }
1522 Jim_SetResultString( goi.interp, jtag_interface->name, -1 );
1523 return JIM_OK;
1524 case JTAG_CMD_INIT_RESET:
1525 if( goi.argc != 0 ){
1526 Jim_WrongNumArgs( goi.interp, 1, goi.argv-1, "(no params)");
1527 return JIM_ERR;
1528 }
1529 e = jtag_init_reset(context);
1530 if( e != ERROR_OK ){
1531 Jim_SetResult_sprintf( goi.interp, "error: %d", e);
1532 return JIM_ERR;
1533 }
1534 return JIM_OK;
1535 case JTAG_CMD_NEWTAP:
1536 return jim_newtap_cmd( &goi );
1537 break;
1538 case JTAG_CMD_TAPISENABLED:
1539 case JTAG_CMD_TAPENABLE:
1540 case JTAG_CMD_TAPDISABLE:
1541 if( goi.argc != 1 ){
1542 Jim_SetResultString( goi.interp, "Too many parameters",-1 );
1543 return JIM_ERR;
1544 }
1545
1546 {
1547 jtag_tap_t *t;
1548 t = jtag_tap_by_jim_obj( goi.interp, goi.argv[0] );
1549 if( t == NULL ){
1550 return JIM_ERR;
1551 }
1552 switch( n->value ){
1553 case JTAG_CMD_TAPISENABLED:
1554 e = t->enabled;
1555 break;
1556 case JTAG_CMD_TAPENABLE:
1557 jtag_tap_handle_event( t, JTAG_TAP_EVENT_ENABLE);
1558 e = 1;
1559 t->enabled = e;
1560 break;
1561 case JTAG_CMD_TAPDISABLE:
1562 jtag_tap_handle_event( t, JTAG_TAP_EVENT_DISABLE);
1563 e = 0;
1564 t->enabled = e;
1565 break;
1566 }
1567 Jim_SetResult( goi.interp, Jim_NewIntObj( goi.interp, e ) );
1568 return JIM_OK;
1569 }
1570 break;
1571
1572 case JTAG_CMD_CGET:
1573 if( goi.argc < 2 ){
1574 Jim_WrongNumArgs( goi.interp, 0, NULL, "?tap-name? -option ...");
1575 return JIM_ERR;
1576 }
1577
1578 {
1579 jtag_tap_t *t;
1580
1581 Jim_GetOpt_Obj(&goi, &o);
1582 t = jtag_tap_by_jim_obj( goi.interp, o );
1583 if( t == NULL ){
1584 return JIM_ERR;
1585 }
1586
1587 goi.isconfigure = 0;
1588 return jtag_tap_configure_cmd( &goi, t);
1589 }
1590 break;
1591
1592 case JTAG_CMD_CONFIGURE:
1593 if( goi.argc < 3 ){
1594 Jim_WrongNumArgs( goi.interp, 0, NULL, "?tap-name? -option ?VALUE? ...");
1595 return JIM_ERR;
1596 }
1597
1598 {
1599 jtag_tap_t *t;
1600
1601 Jim_GetOpt_Obj(&goi, &o);
1602 t = jtag_tap_by_jim_obj( goi.interp, o );
1603 if( t == NULL ){
1604 return JIM_ERR;
1605 }
1606
1607 goi.isconfigure = 1;
1608 return jtag_tap_configure_cmd( &goi, t);
1609 }
1610 }
1611
1612 return JIM_ERR;
1613 }
1614
1615 int jtag_register_commands(struct command_context_s *cmd_ctx)
1616 {
1617 register_jim( cmd_ctx, "jtag", jim_jtag_command, "perform jtag tap actions");
1618
1619 register_command(cmd_ctx, NULL, "interface", handle_interface_command,
1620 COMMAND_CONFIG, "try to configure interface");
1621 register_command(cmd_ctx, NULL, "jtag_speed", handle_jtag_speed_command,
1622 COMMAND_ANY, "(DEPRECATED) set jtag speed (if supported)");
1623 register_command(cmd_ctx, NULL, "jtag_khz", handle_jtag_khz_command,
1624 COMMAND_ANY, "set maximum jtag speed (if supported); "
1625 "parameter is maximum khz, or 0 for adaptive clocking (RTCK).");
1626 register_command(cmd_ctx, NULL, "jtag_device", handle_jtag_device_command,
1627 COMMAND_CONFIG, "(DEPRECATED) jtag_device <ir_length> <ir_expected> <ir_mask>");
1628 register_command(cmd_ctx, NULL, "reset_config", handle_reset_config_command,
1629 COMMAND_ANY,
1630 "[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]");
1631 register_command(cmd_ctx, NULL, "jtag_nsrst_delay", handle_jtag_nsrst_delay_command,
1632 COMMAND_ANY, "jtag_nsrst_delay <ms> - delay after deasserting srst in ms");
1633 register_command(cmd_ctx, NULL, "jtag_ntrst_delay", handle_jtag_ntrst_delay_command,
1634 COMMAND_ANY, "jtag_ntrst_delay <ms> - delay after deasserting trst in ms");
1635
1636 register_command(cmd_ctx, NULL, "scan_chain", handle_scan_chain_command,
1637 COMMAND_EXEC, "print current scan chain configuration");
1638
1639 register_command(cmd_ctx, NULL, "jtag_reset", handle_jtag_reset_command,
1640 COMMAND_EXEC, "toggle reset lines <trst> <srst>");
1641 register_command(cmd_ctx, NULL, "runtest", handle_runtest_command,
1642 COMMAND_EXEC, "move to Run-Test/Idle, and execute <num_cycles>");
1643 register_command(cmd_ctx, NULL, "irscan", handle_irscan_command,
1644 COMMAND_EXEC, "execute IR scan <device> <instr> [dev2] [instr2] ...");
1645 register_jim(cmd_ctx, "drscan", Jim_Command_drscan, "execute DR scan <device> <num_bits> <value> <num_bits1> <value2> ...");
1646 register_jim(cmd_ctx, "flush_count", Jim_Command_flush_count, "returns number of times the JTAG queue has been flushed");
1647
1648 register_command(cmd_ctx, NULL, "verify_ircapture", handle_verify_ircapture_command,
1649 COMMAND_ANY, "verify value captured during Capture-IR <enable|disable>");
1650 register_command(cmd_ctx, NULL, "verify_jtag", handle_verify_jtag_command,
1651 COMMAND_ANY, "verify value capture <enable|disable>");
1652 register_command(cmd_ctx, NULL, "tms_sequence", handle_tms_sequence_command,
1653 COMMAND_ANY, "choose short(default) or long tms_sequence <short|long>");
1654 return ERROR_OK;
1655 }
1656
1657 int jtag_interface_init(struct command_context_s *cmd_ctx)
1658 {
1659 if (jtag)
1660 return ERROR_OK;
1661
1662 if (!jtag_interface)
1663 {
1664 /* nothing was previously specified by "interface" command */
1665 LOG_ERROR("JTAG interface has to be specified, see \"interface\" command");
1666 return ERROR_JTAG_INVALID_INTERFACE;
1667 }
1668 if(hasKHz)
1669 {
1670 jtag_interface->khz(jtag_get_speed_khz(), &jtag_speed);
1671 hasKHz = false;
1672 }
1673
1674 if (jtag_interface->init() != ERROR_OK)
1675 return ERROR_JTAG_INIT_FAILED;
1676
1677 jtag = jtag_interface;
1678 return ERROR_OK;
1679 }
1680
1681 static int jtag_init_inner(struct command_context_s *cmd_ctx)
1682 {
1683 jtag_tap_t *tap;
1684 int retval;
1685
1686 LOG_DEBUG("Init JTAG chain");
1687
1688 tap = jtag_tap_next_enabled(NULL);
1689 if( tap == NULL ){
1690 LOG_ERROR("There are no enabled taps?");
1691 return ERROR_JTAG_INIT_FAILED;
1692 }
1693
1694 jtag_add_tlr();
1695 if ((retval=jtag_execute_queue())!=ERROR_OK)
1696 return retval;
1697
1698 /* examine chain first, as this could discover the real chain layout */
1699 if (jtag_examine_chain() != ERROR_OK)
1700 {
1701 LOG_ERROR("trying to validate configured JTAG chain anyway...");
1702 }
1703
1704 if (jtag_validate_chain() != ERROR_OK)
1705 {
1706 LOG_WARNING("Could not validate JTAG chain, continuing anyway...");
1707 }
1708
1709 return ERROR_OK;
1710 }
1711
1712 int jtag_interface_quit(void)
1713 {
1714 if (!jtag || !jtag->quit)
1715 return ERROR_OK;
1716
1717 // close the JTAG interface
1718 int result = jtag->quit();
1719 if (ERROR_OK != result)
1720 LOG_ERROR("failed: %d", result);
1721
1722 return ERROR_OK;
1723 }
1724
1725
1726 int jtag_init_reset(struct command_context_s *cmd_ctx)
1727 {
1728 int retval;
1729
1730 if ((retval=jtag_interface_init(cmd_ctx)) != ERROR_OK)
1731 return retval;
1732
1733 LOG_DEBUG("Trying to bring the JTAG controller to life by asserting TRST / RESET");
1734
1735 /* Reset can happen after a power cycle.
1736 *
1737 * Ideally we would only assert TRST or run RESET before the target reset.
1738 *
1739 * However w/srst_pulls_trst, trst is asserted together with the target
1740 * reset whether we want it or not.
1741 *
1742 * NB! Some targets have JTAG circuitry disabled until a
1743 * trst & srst has been asserted.
1744 *
1745 * NB! here we assume nsrst/ntrst delay are sufficient!
1746 *
1747 * NB! order matters!!!! srst *can* disconnect JTAG circuitry
1748 *
1749 */
1750 jtag_add_reset(1, 0); /* RESET or TRST */
1751 if (jtag_reset_config & RESET_HAS_SRST)
1752 {
1753 jtag_add_reset(1, 1);
1754 if ((jtag_reset_config & RESET_SRST_PULLS_TRST)==0)
1755 jtag_add_reset(0, 1);
1756 }
1757 jtag_add_reset(0, 0);
1758 if ((retval = jtag_execute_queue()) != ERROR_OK)
1759 return retval;
1760
1761 /* Check that we can communication on the JTAG chain + eventually we want to
1762 * be able to perform enumeration only after OpenOCD has started
1763 * telnet and GDB server
1764 *
1765 * That would allow users to more easily perform any magic they need to before
1766 * reset happens.
1767 */
1768 return jtag_init_inner(cmd_ctx);
1769 }
1770
1771 int jtag_init(struct command_context_s *cmd_ctx)
1772 {
1773 int retval;
1774 if ((retval=jtag_interface_init(cmd_ctx)) != ERROR_OK)
1775 return retval;
1776 if (jtag_init_inner(cmd_ctx)==ERROR_OK)
1777 {
1778 return ERROR_OK;
1779 }
1780 return jtag_init_reset(cmd_ctx);
1781 }
1782
1783 void jtag_set_speed_khz(unsigned khz)
1784 {
1785 speed_khz = khz;
1786 }
1787 unsigned jtag_get_speed_khz(void)
1788 {
1789 return speed_khz;
1790 }
1791
1792 static int default_khz(int khz, int *jtag_speed)
1793 {
1794 LOG_ERROR("Translation from khz to jtag_speed not implemented");
1795 return ERROR_FAIL;
1796 }
1797
1798 static int default_speed_div(int speed, int *khz)
1799 {
1800 LOG_ERROR("Translation from jtag_speed to khz not implemented");
1801 return ERROR_FAIL;
1802 }
1803
1804 static int default_power_dropout(int *dropout)
1805 {
1806 *dropout=0; /* by default we can't detect power dropout */
1807 return ERROR_OK;
1808 }
1809
1810 static int default_srst_asserted(int *srst_asserted)
1811 {
1812 *srst_asserted=0; /* by default we can't detect srst asserted */
1813 return ERROR_OK;
1814 }
1815
1816 static int handle_interface_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1817 {
1818 int i;
1819 int retval;
1820
1821 /* check whether the interface is already configured */
1822 if (jtag_interface)
1823 {
1824 LOG_WARNING("Interface already configured, ignoring");
1825 return ERROR_OK;
1826 }
1827
1828 /* interface name is a mandatory argument */
1829 if (argc < 1 || args[0][0] == '\0')
1830 {
1831 return ERROR_COMMAND_SYNTAX_ERROR;
1832 }
1833
1834 for (i=0; jtag_interfaces[i]; i++)
1835 {
1836 if (strcmp(args[0], jtag_interfaces[i]->name) == 0)
1837 {
1838 if ((retval = jtag_interfaces[i]->register_commands(cmd_ctx)) != ERROR_OK)
1839 {
1840 return retval;
1841 }
1842
1843 jtag_interface = jtag_interfaces[i];
1844
1845 if (jtag_interface->khz == NULL)
1846 {
1847 jtag_interface->khz = default_khz;
1848 }
1849 if (jtag_interface->speed_div == NULL)
1850 {
1851 jtag_interface->speed_div = default_speed_div;
1852 }
1853 if (jtag_interface->power_dropout == NULL)
1854 {
1855 jtag_interface->power_dropout = default_power_dropout;
1856 }
1857 if (jtag_interface->srst_asserted == NULL)
1858 {
1859 jtag_interface->srst_asserted = default_srst_asserted;
1860 }
1861
1862 return ERROR_OK;
1863 }
1864 }
1865
1866 /* no valid interface was found (i.e. the configuration option,
1867 * didn't match one of the compiled-in interfaces
1868 */
1869 LOG_ERROR("No valid jtag interface found (%s)", args[0]);
1870 LOG_ERROR("compiled-in jtag interfaces:");
1871 for (i = 0; jtag_interfaces[i]; i++)
1872 {
1873 LOG_ERROR("%i: %s", i, jtag_interfaces[i]->name);
1874 }
1875
1876 return ERROR_JTAG_INVALID_INTERFACE;
1877 }
1878
1879 static int handle_jtag_device_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1880 {
1881 int e;
1882 char buf[1024];
1883 Jim_Obj *newargs[ 10 ];
1884 /*
1885 * CONVERT SYNTAX
1886 * argv[-1] = command
1887 * argv[ 0] = ir length
1888 * argv[ 1] = ir capture
1889 * argv[ 2] = ir mask
1890 * argv[ 3] = not actually used by anything but in the docs
1891 */
1892
1893 if( argc < 4 ){
1894 command_print( cmd_ctx, "OLD DEPRECATED SYNTAX: Please use the NEW syntax");
1895 return ERROR_OK;
1896 }
1897 command_print( cmd_ctx, "OLD SYNTAX: DEPRECATED - translating to new syntax");
1898 command_print( cmd_ctx, "jtag newtap CHIP TAP -irlen %s -ircapture %s -irvalue %s",
1899 args[0],
1900 args[1],
1901 args[2] );
1902 command_print( cmd_ctx, "Example: STM32 has 2 taps, the cortexM3(len4) + boundaryscan(len5)");
1903 command_print( cmd_ctx, "jtag newtap stm32 cortexm3 ....., thus creating the tap: \"stm32.cortexm3\"");
1904 command_print( cmd_ctx, "jtag newtap stm32 boundary ....., and the tap: \"stm32.boundary\"");
1905 command_print( cmd_ctx, "And then refer to the taps by the dotted name.");
1906
1907 newargs[0] = Jim_NewStringObj( interp, "jtag", -1 );
1908 newargs[1] = Jim_NewStringObj( interp, "newtap", -1 );
1909 sprintf( buf, "chip%d", jtag_tap_count() );
1910 newargs[2] = Jim_NewStringObj( interp, buf, -1 );
1911 sprintf( buf, "tap%d", jtag_tap_count() );
1912 newargs[3] = Jim_NewStringObj( interp, buf, -1 );
1913 newargs[4] = Jim_NewStringObj( interp, "-irlen", -1 );
1914 newargs[5] = Jim_NewStringObj( interp, args[0], -1 );
1915 newargs[6] = Jim_NewStringObj( interp, "-ircapture", -1 );
1916 newargs[7] = Jim_NewStringObj( interp, args[1], -1 );
1917 newargs[8] = Jim_NewStringObj( interp, "-irmask", -1 );
1918 newargs[9] = Jim_NewStringObj( interp, args[2], -1 );
1919
1920 command_print( cmd_ctx, "NEW COMMAND:");
1921 sprintf( buf, "%s %s %s %s %s %s %s %s %s %s",
1922 Jim_GetString( newargs[0], NULL ),
1923 Jim_GetString( newargs[1], NULL ),
1924 Jim_GetString( newargs[2], NULL ),
1925 Jim_GetString( newargs[3], NULL ),
1926 Jim_GetString( newargs[4], NULL ),
1927 Jim_GetString( newargs[5], NULL ),
1928 Jim_GetString( newargs[6], NULL ),
1929 Jim_GetString( newargs[7], NULL ),
1930 Jim_GetString( newargs[8], NULL ),
1931 Jim_GetString( newargs[9], NULL ) );
1932
1933 e = jim_jtag_command( interp, 10, newargs );
1934 if( e != JIM_OK ){
1935 command_print( cmd_ctx, "%s", Jim_GetString( Jim_GetResult(interp), NULL ) );
1936 }
1937 return e;
1938 }
1939
1940 static int handle_scan_chain_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1941 {
1942 jtag_tap_t *tap;
1943
1944 tap = jtag_all_taps();
1945 command_print(cmd_ctx, " TapName | Enabled | IdCode Expected IrLen IrCap IrMask Instr ");
1946 command_print(cmd_ctx, "---|--------------------|---------|------------|------------|------|------|------|---------");
1947
1948 while( tap ){
1949 u32 expected, expected_mask, cur_instr, ii;
1950 expected = buf_get_u32(tap->expected, 0, tap->ir_length);
1951 expected_mask = buf_get_u32(tap->expected_mask, 0, tap->ir_length);
1952 cur_instr = buf_get_u32(tap->cur_instr, 0, tap->ir_length);
1953
1954 command_print(cmd_ctx,
1955 "%2d | %-18s | %c | 0x%08x | 0x%08x | 0x%02x | 0x%02x | 0x%02x | 0x%02x",
1956 tap->abs_chain_position,
1957 tap->dotted_name,
1958 tap->enabled ? 'Y' : 'n',
1959 tap->idcode,
1960 (tap->expected_ids_cnt > 0 ? tap->expected_ids[0] : 0),
1961 tap->ir_length,
1962 expected,
1963 expected_mask,
1964 cur_instr);
1965
1966 for (ii = 1; ii < tap->expected_ids_cnt; ii++) {
1967 command_print(cmd_ctx, " | | | | 0x%08x | | | | ",
1968 tap->expected_ids[ii]);
1969 }
1970
1971 tap = tap->next_tap;
1972 }
1973
1974 return ERROR_OK;
1975 }
1976
1977 static int handle_reset_config_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1978 {
1979 int new_cfg = 0;
1980 int mask = 0;
1981
1982 if (argc < 1)
1983 return ERROR_COMMAND_SYNTAX_ERROR;
1984
1985 /* Original versions cared about the order of these tokens:
1986 * reset_config signals [combination [trst_type [srst_type]]]
1987 * They also clobbered the previous configuration even on error.
1988 *
1989 * Here we don't care about the order, and only change values
1990 * which have been explicitly specified.
1991 */
1992 for (; argc; argc--, args++) {
1993 int tmp = 0;
1994 int m;
1995
1996 /* signals */
1997 m = RESET_HAS_TRST | RESET_HAS_SRST;
1998 if (strcmp(*args, "none") == 0)
1999 tmp = RESET_NONE;
2000 else if (strcmp(*args, "trst_only") == 0)
2001 tmp = RESET_HAS_TRST;
2002 else if (strcmp(*args, "srst_only") == 0)
2003 tmp = RESET_HAS_SRST;
2004 else if (strcmp(*args, "trst_and_srst") == 0)
2005 tmp = RESET_HAS_TRST | RESET_HAS_SRST;
2006 else
2007 m = 0;
2008 if (mask & m) {
2009 LOG_ERROR("extra reset_config %s spec (%s)",
2010 "signal", *args);
2011 return ERROR_INVALID_ARGUMENTS;
2012 }
2013 if (m)
2014 goto next;
2015
2016 /* combination (options for broken wiring) */
2017 m = RESET_SRST_PULLS_TRST | RESET_TRST_PULLS_SRST;
2018 if (strcmp(*args, "separate") == 0)
2019 /* separate reset lines - default */;
2020 else if (strcmp(*args, "srst_pulls_trst") == 0)
2021 tmp |= RESET_SRST_PULLS_TRST;
2022 else if (strcmp(*args, "trst_pulls_srst") == 0)
2023 tmp |= RESET_TRST_PULLS_SRST;
2024 else if (strcmp(*args, "combined") == 0)
2025 tmp |= RESET_SRST_PULLS_TRST | RESET_TRST_PULLS_SRST;
2026 else
2027 m = 0;
2028 if (mask & m) {
2029 LOG_ERROR("extra reset_config %s spec (%s)",
2030 "combination", *args);
2031 return ERROR_INVALID_ARGUMENTS;
2032 }
2033 if (m)
2034 goto next;
2035
2036 /* trst_type (NOP without HAS_TRST) */
2037 m = RESET_TRST_OPEN_DRAIN;
2038 if (strcmp(*args, "trst_open_drain") == 0)
2039 tmp |= RESET_TRST_OPEN_DRAIN;
2040 else if (strcmp(*args, "trst_push_pull") == 0)
2041 /* push/pull from adapter - default */;
2042 else
2043 m = 0;
2044 if (mask & m) {
2045 LOG_ERROR("extra reset_config %s spec (%s)",
2046 "trst_type", *args);
2047 return ERROR_INVALID_ARGUMENTS;
2048 }
2049 if (m)
2050 goto next;
2051
2052 /* srst_type (NOP without HAS_SRST) */
2053 m |= RESET_SRST_PUSH_PULL;
2054 if (strcmp(*args, "srst_push_pull") == 0)
2055 tmp |= RESET_SRST_PUSH_PULL;
2056 else if (strcmp(*args, "srst_open_drain") == 0)
2057 /* open drain from adapter - default */;
2058 else
2059 m = 0;
2060 if (mask & m) {
2061 LOG_ERROR("extra reset_config %s spec (%s)",
2062 "srst_type", *args);
2063 return ERROR_INVALID_ARGUMENTS;
2064 }
2065 if (m)
2066 goto next;
2067
2068 /* caller provided nonsense; fail */
2069 LOG_ERROR("unknown reset_config flag (%s)", *args);
2070 return ERROR_INVALID_ARGUMENTS;
2071
2072 next:
2073 /* Remember the bits which were specified (mask)
2074 * and their new values (new_cfg).
2075 */
2076 mask |= m;
2077 new_cfg |= tmp;
2078 }
2079
2080 /* clear previous values of those bits, save new values */
2081 jtag_reset_config &= ~mask;
2082 jtag_reset_config |= new_cfg;
2083
2084 return ERROR_OK;
2085 }
2086
2087 static int handle_jtag_nsrst_delay_command(struct command_context_s *cmd_ctx,
2088 char *cmd, char **args, int argc)
2089 {
2090 if (argc > 1)
2091 return ERROR_COMMAND_SYNTAX_ERROR;
2092 if (argc == 1)
2093 jtag_set_nsrst_delay(strtoul(args[0], NULL, 0));
2094 command_print(cmd_ctx, "jtag_nsrst_delay: %u", jtag_get_nsrst_delay());
2095 return ERROR_OK;
2096 }
2097
2098 static int handle_jtag_ntrst_delay_command(struct command_context_s *cmd_ctx,
2099 char *cmd, char **args, int argc)
2100 {
2101 if (argc > 1)
2102 return ERROR_COMMAND_SYNTAX_ERROR;
2103 if (argc == 1)
2104 jtag_set_ntrst_delay(strtoul(args[0], NULL, 0));
2105 command_print(cmd_ctx, "jtag_ntrst_delay: %u", jtag_get_ntrst_delay());
2106 return ERROR_OK;
2107 }
2108
2109 static int handle_jtag_speed_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2110 {
2111 int retval = ERROR_OK;
2112
2113 if (argc > 1)
2114 return ERROR_COMMAND_SYNTAX_ERROR;
2115 if (argc == 1)
2116 {
2117 LOG_DEBUG("handle jtag speed");
2118
2119 int cur_speed = 0;
2120 cur_speed = jtag_speed = strtoul(args[0], NULL, 0);
2121
2122 /* this command can be called during CONFIG,
2123 * in which case jtag isn't initialized */
2124 if (jtag)
2125 retval = jtag->speed(cur_speed);
2126 }
2127 command_print(cmd_ctx, "jtag_speed: %d", jtag_speed);
2128
2129 return retval;
2130 }
2131
2132 static int handle_jtag_khz_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2133 {
2134 if (argc > 1)
2135 return ERROR_COMMAND_SYNTAX_ERROR;
2136
2137 int retval = ERROR_OK;
2138 int cur_speed = 0;
2139 if (argc == 1)
2140 {
2141 LOG_DEBUG("handle jtag khz");
2142
2143 jtag_set_speed_khz(strtoul(args[0], NULL, 0));
2144 if (jtag != NULL)
2145 {
2146 LOG_DEBUG("have interface set up");
2147 int speed_div1;
2148 retval = jtag->khz(jtag_get_speed_khz(), &speed_div1);
2149 if (ERROR_OK != retval)
2150 {
2151 jtag_set_speed_khz(0);
2152 return retval;
2153 }
2154 cur_speed = jtag_speed = speed_div1;
2155
2156 retval = jtag->speed(cur_speed);
2157 }
2158 else
2159 hasKHz = true;
2160 }
2161
2162 cur_speed = jtag_get_speed_khz();
2163 if (jtag != NULL)
2164 {
2165 retval = jtag->speed_div(jtag_speed, &cur_speed);
2166 if (ERROR_OK != retval)
2167 return retval;
2168 }
2169
2170 if (cur_speed)
2171 command_print(cmd_ctx, "%d kHz", cur_speed);
2172 else
2173 command_print(cmd_ctx, "RCLK - adaptive");
2174 return retval;
2175
2176 }
2177
2178 static int handle_jtag_reset_command(struct command_context_s *cmd_ctx,
2179 char *cmd, char **args, int argc)
2180 {
2181 if (argc != 2)
2182 return ERROR_COMMAND_SYNTAX_ERROR;
2183
2184 int trst = -1;
2185 if (args[0][0] == '1')
2186 trst = 1;
2187 else if (args[0][0] == '0')
2188 trst = 0;
2189 else
2190 return ERROR_COMMAND_SYNTAX_ERROR;
2191
2192 int srst = -1;
2193 if (args[1][0] == '1')
2194 srst = 1;
2195 else if (args[1][0] == '0')
2196 srst = 0;
2197 else
2198 return ERROR_COMMAND_SYNTAX_ERROR;
2199
2200 if (jtag_interface_init(cmd_ctx) != ERROR_OK)
2201 return ERROR_JTAG_INIT_FAILED;
2202
2203 jtag_add_reset(trst, srst);
2204 jtag_execute_queue();
2205
2206 return ERROR_OK;
2207 }
2208
2209 static int handle_runtest_command(struct command_context_s *cmd_ctx,
2210 char *cmd, char **args, int argc)
2211 {
2212 if (argc != 1)
2213 return ERROR_COMMAND_SYNTAX_ERROR;
2214
2215 jtag_add_runtest(strtol(args[0], NULL, 0), jtag_get_end_state());
2216 jtag_execute_queue();
2217
2218 return ERROR_OK;
2219 }
2220
2221 /*
2222 * For "irscan" or "drscan" commands, the "end" (really, "next") state
2223 * should be stable ... and *NOT* a shift state, otherwise free-running
2224 * jtag clocks could change the values latched by the update state.
2225 */
2226 static bool scan_is_safe(tap_state_t state)
2227 {
2228 switch (state)
2229 {
2230 case TAP_RESET:
2231 case TAP_IDLE:
2232 case TAP_DRPAUSE:
2233 case TAP_IRPAUSE:
2234 return true;
2235 default:
2236 return false;
2237 }
2238 }
2239
2240
2241 static int handle_irscan_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2242 {
2243 int i;
2244 scan_field_t *fields;
2245 jtag_tap_t *tap;
2246 tap_state_t endstate;
2247
2248 if ((argc < 2) || (argc % 2))
2249 {
2250 return ERROR_COMMAND_SYNTAX_ERROR;
2251 }
2252
2253 /* optional "-endstate" "statename" at the end of the arguments,
2254 * so that e.g. IRPAUSE can let us load the data register before
2255 * entering RUN/IDLE to execute the instruction we load here.
2256 */
2257 endstate = TAP_IDLE;
2258
2259 if( argc >= 4 ){
2260 /* have at least one pair of numbers. */
2261 /* is last pair the magic text? */
2262 if( 0 == strcmp( "-endstate", args[ argc - 2 ] ) ){
2263 const char *cpA;
2264 const char *cpS;
2265 cpA = args[ argc-1 ];
2266 for( endstate = 0 ; endstate < TAP_NUM_STATES ; endstate++ ){
2267 cpS = tap_state_name( endstate );
2268 if( 0 == strcmp( cpA, cpS ) ){
2269 break;
2270 }
2271 }
2272 if( endstate >= TAP_NUM_STATES ){
2273 return ERROR_COMMAND_SYNTAX_ERROR;
2274 } else {
2275 if (!scan_is_safe(endstate))
2276 LOG_WARNING("irscan with unsafe "
2277 "endstate \"%s\"", cpA);
2278 /* found - remove the last 2 args */
2279 argc -= 2;
2280 }
2281 }
2282 }
2283
2284 int num_fields = argc / 2;
2285
2286 fields = malloc(sizeof(scan_field_t) * num_fields);
2287
2288 for (i = 0; i < num_fields; i++)
2289 {
2290 tap = jtag_tap_by_string( args[i*2] );
2291 if (tap==NULL)
2292 {
2293 command_print( cmd_ctx, "Tap: %s unknown", args[i*2] );
2294 return ERROR_FAIL;
2295 }
2296 int field_size = tap->ir_length;
2297 fields[i].tap = tap;
2298 fields[i].num_bits = field_size;
2299 fields[i].out_value = malloc(CEIL(field_size, 8));
2300 buf_set_u32(fields[i].out_value, 0, field_size, strtoul(args[i*2+1], NULL, 0));
2301 fields[i].in_value = NULL;
2302 }
2303
2304 /* did we have an endstate? */
2305 jtag_add_ir_scan(num_fields, fields, endstate);
2306
2307 int retval=jtag_execute_queue();
2308
2309 for (i = 0; i < num_fields; i++)
2310 free(fields[i].out_value);
2311
2312 free (fields);
2313
2314 return retval;
2315 }
2316
2317 static int Jim_Command_drscan(Jim_Interp *interp, int argc, Jim_Obj *const *args)
2318 {
2319 int retval;
2320 scan_field_t *fields;
2321 int num_fields;
2322 int field_count = 0;
2323 int i, e;
2324 jtag_tap_t *tap;
2325 tap_state_t endstate;
2326
2327 /* args[1] = device
2328 * args[2] = num_bits
2329 * args[3] = hex string
2330 * ... repeat num bits and hex string ...
2331 *
2332 * .. optionally:
2333 * args[N-2] = "-endstate"
2334 * args[N-1] = statename
2335 */
2336 if ((argc < 4) || ((argc % 2)!=0))
2337 {
2338 Jim_WrongNumArgs(interp, 1, args, "wrong arguments");
2339 return JIM_ERR;
2340 }
2341
2342 endstate = TAP_IDLE;
2343
2344 /* validate arguments as numbers */
2345 e = JIM_OK;
2346 for (i = 2; i < argc; i+=2)
2347 {
2348 long bits;
2349 const char *cp;
2350
2351 e = Jim_GetLong(interp, args[i], &bits);
2352 /* If valid - try next arg */
2353 if( e == JIM_OK ){
2354 continue;
2355 }
2356
2357 /* Not valid.. are we at the end? */
2358 if ( ((i+2) != argc) ){
2359 /* nope, then error */
2360 return e;
2361 }
2362
2363 /* it could be: "-endstate FOO"
2364 * e.g. DRPAUSE so we can issue more instructions
2365 * before entering RUN/IDLE and executing them.
2366 */
2367
2368 /* get arg as a string. */
2369 cp = Jim_GetString( args[i], NULL );
2370 /* is it the magic? */
2371 if( 0 == strcmp( "-endstate", cp ) ){
2372 /* is the statename valid? */
2373 cp = Jim_GetString( args[i+1], NULL );
2374
2375 /* see if it is a valid state name */
2376 endstate = tap_state_by_name(cp);
2377 if( endstate < 0 ){
2378 /* update the error message */
2379 Jim_SetResult_sprintf(interp,"endstate: %s invalid", cp );
2380 } else {
2381 if (!scan_is_safe(endstate))
2382 LOG_WARNING("drscan with unsafe "
2383 "endstate \"%s\"", cp);
2384
2385 /* valid - so clear the error */
2386 e = JIM_OK;
2387 /* and remove the last 2 args */
2388 argc -= 2;
2389 }
2390 }
2391
2392 /* Still an error? */
2393 if( e != JIM_OK ){
2394 return e; /* too bad */
2395 }
2396 } /* validate args */
2397
2398 tap = jtag_tap_by_jim_obj( interp, args[1] );
2399 if( tap == NULL ){
2400 return JIM_ERR;
2401 }
2402
2403 num_fields=(argc-2)/2;
2404 fields = malloc(sizeof(scan_field_t) * num_fields);
2405 for (i = 2; i < argc; i+=2)
2406 {
2407 long bits;
2408 int len;
2409 const char *str;
2410
2411 Jim_GetLong(interp, args[i], &bits);
2412 str = Jim_GetString(args[i+1], &len);
2413
2414 fields[field_count].tap = tap;
2415 fields[field_count].num_bits = bits;
2416 fields[field_count].out_value = malloc(CEIL(bits, 8));
2417 str_to_buf(str, len, fields[field_count].out_value, bits, 0);
2418 fields[field_count].in_value = fields[field_count].out_value;
2419 field_count++;
2420 }
2421
2422 jtag_add_dr_scan(num_fields, fields, endstate);
2423
2424 retval = jtag_execute_queue();
2425 if (retval != ERROR_OK)
2426 {
2427 Jim_SetResultString(interp, "drscan: jtag execute failed",-1);
2428 return JIM_ERR;
2429 }
2430
2431 field_count=0;
2432 Jim_Obj *list = Jim_NewListObj(interp, NULL, 0);
2433 for (i = 2; i < argc; i+=2)
2434 {
2435 long bits;
2436 char *str;
2437
2438 Jim_GetLong(interp, args[i], &bits);
2439 str = buf_to_str(fields[field_count].in_value, bits, 16);
2440 free(fields[field_count].out_value);
2441
2442 Jim_ListAppendElement(interp, list, Jim_NewStringObj(interp, str, strlen(str)));
2443 free(str);
2444 field_count++;
2445 }
2446
2447 Jim_SetResult(interp, list);
2448
2449 free(fields);
2450
2451 return JIM_OK;
2452 }
2453
2454
2455 static int Jim_Command_flush_count(Jim_Interp *interp, int argc, Jim_Obj *const *args)
2456 {
2457 Jim_SetResult(interp, Jim_NewIntObj(interp, jtag_get_flush_queue_count()));
2458
2459 return JIM_OK;
2460 }
2461
2462
2463 static int handle_verify_ircapture_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2464 {
2465 if (argc == 1)
2466 {
2467 if (strcmp(args[0], "enable") == 0)
2468 {
2469 jtag_verify_capture_ir = 1;
2470 }
2471 else if (strcmp(args[0], "disable") == 0)
2472 {
2473 jtag_verify_capture_ir = 0;
2474 } else
2475 {
2476 return ERROR_COMMAND_SYNTAX_ERROR;
2477 }
2478 } else if (argc != 0)
2479 {
2480 return ERROR_COMMAND_SYNTAX_ERROR;
2481 }
2482
2483 command_print(cmd_ctx, "verify Capture-IR is %s", (jtag_verify_capture_ir) ? "enabled": "disabled");
2484
2485 return ERROR_OK;
2486 }
2487
2488 void jtag_set_verify(bool enable)
2489 {
2490 jtag_verify = enable;
2491 }
2492
2493 bool jtag_will_verify()
2494 {
2495 return jtag_verify;
2496 }
2497
2498 static int handle_verify_jtag_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2499 {
2500 if (argc > 1)
2501 return ERROR_COMMAND_SYNTAX_ERROR;
2502
2503 if (argc == 1)
2504 {
2505 if (strcmp(args[0], "enable") == 0)
2506 jtag_set_verify(true);
2507 else if (strcmp(args[0], "disable") == 0)
2508 jtag_set_verify(false);
2509 else
2510 return ERROR_COMMAND_SYNTAX_ERROR;
2511 }
2512
2513 const char *status = jtag_will_verify() ? "enabled": "disabled";
2514 command_print(cmd_ctx, "verify jtag capture is %s", status);
2515
2516 return ERROR_OK;
2517 }
2518
2519
2520 int jtag_power_dropout(int *dropout)
2521 {
2522 return jtag->power_dropout(dropout);
2523 }
2524
2525 int jtag_srst_asserted(int *srst_asserted)
2526 {
2527 return jtag->srst_asserted(srst_asserted);
2528 }
2529
2530 void jtag_tap_handle_event( jtag_tap_t * tap, enum jtag_tap_event e)
2531 {
2532 jtag_tap_event_action_t * jteap;
2533 int done;
2534
2535 jteap = tap->event_action;
2536
2537 done = 0;
2538 while (jteap) {
2539 if (jteap->event == e) {
2540 done = 1;
2541 LOG_DEBUG( "JTAG tap: %s event: %d (%s) action: %s\n",
2542 tap->dotted_name,
2543 e,
2544 Jim_Nvp_value2name_simple(nvp_jtag_tap_event, e)->name,
2545 Jim_GetString(jteap->body, NULL) );
2546 if (Jim_EvalObj(interp, jteap->body) != JIM_OK) {
2547 Jim_PrintErrorMessage(interp);
2548 }
2549 }
2550
2551 jteap = jteap->next;
2552 }
2553
2554 if (!done) {
2555 LOG_DEBUG( "event %d %s - no action",
2556 e,
2557 Jim_Nvp_value2name_simple( nvp_jtag_tap_event, e)->name);
2558 }
2559 }
2560
2561 static int handle_tms_sequence_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2562 {
2563 if (argc > 1)
2564 return ERROR_COMMAND_SYNTAX_ERROR;
2565
2566 if (argc == 1)
2567 {
2568 bool use_new_table;
2569 if (strcmp(args[0], "short") == 0)
2570 use_new_table = true;
2571 else if (strcmp(args[0], "long") == 0)
2572 use_new_table = false;
2573 else
2574 return ERROR_COMMAND_SYNTAX_ERROR;
2575
2576 tap_use_new_tms_table(use_new_table);
2577 }
2578
2579 command_print(cmd_ctx, "tms sequence is %s",
2580 tap_uses_new_tms_table() ? "short": "long");
2581
2582 return ERROR_OK;
2583 }
2584
2585 /**
2586 * Function jtag_add_statemove
2587 * moves from the current state to the goal \a state. This needs
2588 * to be handled according to the xsvf spec, see the XSTATE command
2589 * description.
2590 */
2591 int jtag_add_statemove(tap_state_t goal_state)
2592 {
2593 int retval = ERROR_OK;
2594
2595 tap_state_t moves[8];
2596 tap_state_t cur_state = cmd_queue_cur_state;
2597 int i;
2598 int tms_bits;
2599 int tms_count;
2600
2601 LOG_DEBUG( "cur_state=%s goal_state=%s",
2602 tap_state_name(cur_state),
2603 tap_state_name(goal_state) );
2604
2605
2606 /* From the XSVF spec, pertaining to XSTATE:
2607
2608 For special states known as stable states (Test-Logic-Reset,
2609 Run-Test/Idle, Pause-DR, Pause- IR), an XSVF interpreter follows
2610 predefined TAP state paths when the starting state is a stable state and
2611 when the XSTATE specifies a new stable state (see the STATE command in
2612 the [Ref 5] for the TAP state paths between stable states). For
2613 non-stable states, XSTATE should specify a state that is only one TAP
2614 state transition distance from the current TAP state to avoid undefined
2615 TAP state paths. A sequence of multiple XSTATE commands can be issued to
2616 transition the TAP through a specific state path.
2617 */
2618
2619 if (goal_state==cur_state )
2620 ; /* nothing to do */
2621
2622 else if( goal_state==TAP_RESET )
2623 {
2624 jtag_add_tlr();
2625 }
2626
2627 else if( tap_is_state_stable(cur_state) && tap_is_state_stable(goal_state) )
2628 {
2629 /* note: unless tms_bits holds a path that agrees with [Ref 5] in above
2630 spec, then this code is not fully conformant to the xsvf spec. This
2631 puts a burden on tap_get_tms_path() function from the xsvf spec.
2632 If in doubt, you should confirm that that burden is being met.
2633 */
2634
2635 tms_bits = tap_get_tms_path(cur_state, goal_state);
2636 tms_count = tap_get_tms_path_len(cur_state, goal_state);
2637
2638 assert( (unsigned) tms_count < DIM(moves) );
2639
2640 for (i=0; i<tms_count; i++, tms_bits>>=1)
2641 {
2642 bool bit = tms_bits & 1;
2643
2644 cur_state = tap_state_transition(cur_state, bit);
2645 moves[i] = cur_state;
2646 }
2647
2648 jtag_add_pathmove(tms_count, moves);
2649 }
2650
2651 /* else state must be immediately reachable in one clock cycle, and does not
2652 need to be a stable state.
2653 */
2654 else if( tap_state_transition(cur_state, true) == goal_state
2655 || tap_state_transition(cur_state, false) == goal_state )
2656 {
2657 /* move a single state */
2658 moves[0] = goal_state;
2659 jtag_add_pathmove( 1, moves );
2660 }
2661
2662 else
2663 {
2664 retval = ERROR_FAIL;
2665 }
2666
2667 return retval;
2668 }
2669
2670 void jtag_set_nsrst_delay(unsigned delay)
2671 {
2672 jtag_nsrst_delay = delay;
2673 }
2674 unsigned jtag_get_nsrst_delay(void)
2675 {
2676 return jtag_nsrst_delay;
2677 }
2678 void jtag_set_ntrst_delay(unsigned delay)
2679 {
2680 jtag_ntrst_delay = delay;
2681 }
2682 unsigned jtag_get_ntrst_delay(void)
2683 {
2684 return jtag_ntrst_delay;
2685 }
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+--[ED25519 256]--+
|=..              |
|+o..   .         |
|*.o   . .        |
|+B . . .         |
|Bo. = o S        |
|Oo.+ + =         |
|oB=.* = . o      |
| =+=.+   + E     |
|. .=o   . o      |
+----[SHA256]-----+
2048 SHA256:0Onrb7/PHjpo6iVZ7xQX2riKN83FJ3KGU0TvI0TaFG4 gerrit-code-review@openocd.zylin.com (RSA)