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minidriver build test driver "minidriver"
[openocd.git] / src / jtag / jtag.c
1 /***************************************************************************
2 * Copyright (C) 2005 by Dominic Rath *
3 * Dominic.Rath@gmx.de *
4 * *
5 * Copyright (C) 2007,2008 Øyvind Harboe *
6 * oyvind.harboe@zylin.com *
7 * *
8 * Copyright (C) 2009 SoftPLC Corporation *
9 * http://softplc.com *
10 * dick@softplc.com *
11 * *
12 * This program is free software; you can redistribute it and/or modify *
13 * it under the terms of the GNU General Public License as published by *
14 * the Free Software Foundation; either version 2 of the License, or *
15 * (at your option) any later version. *
16 * *
17 * This program is distributed in the hope that it will be useful, *
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
20 * GNU General Public License for more details. *
21 * *
22 * You should have received a copy of the GNU General Public License *
23 * along with this program; if not, write to the *
24 * Free Software Foundation, Inc., *
25 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
26 ***************************************************************************/
27 #ifdef HAVE_CONFIG_H
28 #include "config.h"
29 #endif
30
31 #include "jtag.h"
32 #include "minidriver.h"
33 #include "interface.h"
34
35 #ifdef HAVE_STRINGS_H
36 #include <strings.h>
37 #endif
38
39
40 /// The number of JTAG queue flushes (for profiling and debugging purposes).
41 static int jtag_flush_queue_count;
42
43 static void jtag_add_scan_check(void (*jtag_add_scan)(int in_num_fields, const scan_field_t *in_fields, tap_state_t state),
44 int in_num_fields, scan_field_t *in_fields, tap_state_t state);
45
46 /* note that this is not marked as static as it must be available from outside jtag.c for those
47 that implement the jtag_xxx() minidriver layer
48 */
49 int jtag_error=ERROR_OK;
50
51 char* jtag_event_strings[] =
52 {
53 "JTAG controller reset (RESET or TRST)"
54 };
55
56 const Jim_Nvp nvp_jtag_tap_event[] = {
57 { .value = JTAG_TAP_EVENT_ENABLE, .name = "tap-enable" },
58 { .value = JTAG_TAP_EVENT_DISABLE, .name = "tap-disable" },
59
60 { .name = NULL, .value = -1 }
61 };
62
63 int jtag_trst = 0;
64 int jtag_srst = 0;
65
66 /**
67 * List all TAPs that have been created.
68 */
69 static jtag_tap_t *__jtag_all_taps = NULL;
70 /**
71 * The number of TAPs in the __jtag_all_taps list, used to track the
72 * assigned chain position to new TAPs
73 */
74 static int jtag_num_taps = 0;
75
76 enum reset_types jtag_reset_config = RESET_NONE;
77 tap_state_t cmd_queue_end_state = TAP_RESET;
78 tap_state_t cmd_queue_cur_state = TAP_RESET;
79
80 int jtag_verify_capture_ir = 1;
81 int jtag_verify = 1;
82
83 /* how long the OpenOCD should wait before attempting JTAG communication after reset lines deasserted (in ms) */
84 static int jtag_nsrst_delay = 0; /* default to no nSRST delay */
85 static int jtag_ntrst_delay = 0; /* default to no nTRST delay */
86
87 /* callbacks to inform high-level handlers about JTAG state changes */
88 jtag_event_callback_t *jtag_event_callbacks;
89
90 /* speed in kHz*/
91 static int speed_khz = 0;
92 /* flag if the kHz speed was defined */
93 static bool hasKHz = false;
94
95 /* jtag interfaces (parport, FTDI-USB, TI-USB, ...)
96 */
97
98 #if BUILD_ECOSBOARD == 1
99 extern jtag_interface_t zy1000_interface;
100 #endif
101
102 #if BUILD_MINIDUMMY == 1
103 extern jtag_interface_t minidummy_interface;
104 #endif
105 #if BUILD_PARPORT == 1
106 extern jtag_interface_t parport_interface;
107 #endif
108
109 #if BUILD_DUMMY == 1
110 extern jtag_interface_t dummy_interface;
111 #endif
112
113 #if BUILD_FT2232_FTD2XX == 1
114 extern jtag_interface_t ft2232_interface;
115 #endif
116
117 #if BUILD_FT2232_LIBFTDI == 1
118 extern jtag_interface_t ft2232_interface;
119 #endif
120
121 #if BUILD_AMTJTAGACCEL == 1
122 extern jtag_interface_t amt_jtagaccel_interface;
123 #endif
124
125 #if BUILD_EP93XX == 1
126 extern jtag_interface_t ep93xx_interface;
127 #endif
128
129 #if BUILD_AT91RM9200 == 1
130 extern jtag_interface_t at91rm9200_interface;
131 #endif
132
133 #if BUILD_GW16012 == 1
134 extern jtag_interface_t gw16012_interface;
135 #endif
136
137 #if BUILD_PRESTO_LIBFTDI == 1 || BUILD_PRESTO_FTD2XX == 1
138 extern jtag_interface_t presto_interface;
139 #endif
140
141 #if BUILD_USBPROG == 1
142 extern jtag_interface_t usbprog_interface;
143 #endif
144
145 #if BUILD_JLINK == 1
146 extern jtag_interface_t jlink_interface;
147 #endif
148
149 #if BUILD_VSLLINK == 1
150 extern jtag_interface_t vsllink_interface;
151 #endif
152
153 #if BUILD_RLINK == 1
154 extern jtag_interface_t rlink_interface;
155 #endif
156
157 #if BUILD_ARMJTAGEW == 1
158 extern jtag_interface_t armjtagew_interface;
159 #endif
160
161 jtag_interface_t *jtag_interfaces[] = {
162 #if BUILD_ECOSBOARD == 1
163 &zy1000_interface,
164 #endif
165 #if BUILD_MINIDUMMY == 1
166 &minidummy_interface,
167 #endif
168 #if BUILD_PARPORT == 1
169 &parport_interface,
170 #endif
171 #if BUILD_DUMMY == 1
172 &dummy_interface,
173 #endif
174 #if BUILD_FT2232_FTD2XX == 1
175 &ft2232_interface,
176 #endif
177 #if BUILD_FT2232_LIBFTDI == 1
178 &ft2232_interface,
179 #endif
180 #if BUILD_AMTJTAGACCEL == 1
181 &amt_jtagaccel_interface,
182 #endif
183 #if BUILD_EP93XX == 1
184 &ep93xx_interface,
185 #endif
186 #if BUILD_AT91RM9200 == 1
187 &at91rm9200_interface,
188 #endif
189 #if BUILD_GW16012 == 1
190 &gw16012_interface,
191 #endif
192 #if BUILD_PRESTO_LIBFTDI == 1 || BUILD_PRESTO_FTD2XX == 1
193 &presto_interface,
194 #endif
195 #if BUILD_USBPROG == 1
196 &usbprog_interface,
197 #endif
198 #if BUILD_JLINK == 1
199 &jlink_interface,
200 #endif
201 #if BUILD_VSLLINK == 1
202 &vsllink_interface,
203 #endif
204 #if BUILD_RLINK == 1
205 &rlink_interface,
206 #endif
207 #if BUILD_ARMJTAGEW == 1
208 &armjtagew_interface,
209 #endif
210 NULL,
211 };
212
213 struct jtag_interface_s *jtag = NULL;
214
215 /* configuration */
216 static jtag_interface_t *jtag_interface = NULL;
217 int jtag_speed = 0;
218
219 /* jtag commands */
220 static int handle_interface_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
221 static int handle_jtag_speed_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
222 static int handle_jtag_khz_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
223 static int handle_jtag_device_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
224 static int handle_reset_config_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
225 static int handle_jtag_nsrst_delay_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
226 static int handle_jtag_ntrst_delay_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
227
228 static int handle_scan_chain_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
229
230 static int handle_endstate_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
231 static int handle_jtag_reset_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
232 static int handle_runtest_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
233 static int handle_irscan_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
234 static int Jim_Command_drscan(Jim_Interp *interp, int argc, Jim_Obj *const *argv);
235 static int Jim_Command_flush_count(Jim_Interp *interp, int argc, Jim_Obj *const *args);
236
237 static int handle_verify_ircapture_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
238 static int handle_verify_jtag_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
239 static int handle_tms_sequence_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
240
241 jtag_tap_t *jtag_all_taps(void)
242 {
243 return __jtag_all_taps;
244 };
245
246 int jtag_tap_count(void)
247 {
248 return jtag_num_taps;
249 }
250
251 unsigned jtag_tap_count_enabled(void)
252 {
253 jtag_tap_t *t;
254 unsigned n;
255
256 n = 0;
257 t = jtag_all_taps();
258 while(t){
259 if( t->enabled ){
260 n++;
261 }
262 t = t->next_tap;
263 }
264 return n;
265 }
266
267 /// Append a new TAP to the chain of all taps.
268 static void jtag_tap_add(struct jtag_tap_s *t)
269 {
270 t->abs_chain_position = jtag_num_taps++;
271
272 jtag_tap_t **tap = &__jtag_all_taps;
273 while(*tap != NULL)
274 tap = &(*tap)->next_tap;
275 *tap = t;
276 }
277
278 jtag_tap_t *jtag_tap_by_string( const char *s )
279 {
280 jtag_tap_t *t;
281 char *cp;
282
283 t = jtag_all_taps();
284 /* try name first */
285 while(t){
286 if( 0 == strcmp( t->dotted_name, s ) ){
287 break;
288 } else {
289 t = t->next_tap;
290 }
291 }
292 /* backup plan is by number */
293 if( t == NULL ){
294 /* ok - is "s" a number? */
295 int n;
296 n = strtol( s, &cp, 0 );
297 if( (s != cp) && (*cp == 0) ){
298 /* Then it is... */
299 t = jtag_tap_by_abs_position(n);
300 }
301 }
302 return t;
303 }
304
305 jtag_tap_t * jtag_tap_by_jim_obj( Jim_Interp *interp, Jim_Obj *o )
306 {
307 jtag_tap_t *t;
308 const char *cp;
309
310 cp = Jim_GetString( o, NULL );
311 if(cp == NULL){
312 cp = "(unknown)";
313 t = NULL;
314 } else {
315 t = jtag_tap_by_string( cp );
316 }
317 if( t == NULL ){
318 Jim_SetResult_sprintf(interp,"Tap: %s is unknown", cp );
319 }
320 return t;
321 }
322
323 /* returns a pointer to the n-th device in the scan chain */
324 jtag_tap_t * jtag_tap_by_abs_position( int n )
325 {
326 int orig_n;
327 jtag_tap_t *t;
328
329 orig_n = n;
330 t = jtag_all_taps();
331
332 while( t && (n > 0)) {
333 n--;
334 t = t->next_tap;
335 }
336 return t;
337 }
338
339 const char *jtag_tap_name(const jtag_tap_t *tap)
340 {
341 return (tap == NULL) ? "(unknown)" : tap->dotted_name;
342 }
343
344
345 int jtag_register_event_callback(int (*callback)(enum jtag_event event, void *priv), void *priv)
346 {
347 jtag_event_callback_t **callbacks_p = &jtag_event_callbacks;
348
349 if (callback == NULL)
350 {
351 return ERROR_INVALID_ARGUMENTS;
352 }
353
354 if (*callbacks_p)
355 {
356 while ((*callbacks_p)->next)
357 callbacks_p = &((*callbacks_p)->next);
358 callbacks_p = &((*callbacks_p)->next);
359 }
360
361 (*callbacks_p) = malloc(sizeof(jtag_event_callback_t));
362 (*callbacks_p)->callback = callback;
363 (*callbacks_p)->priv = priv;
364 (*callbacks_p)->next = NULL;
365
366 return ERROR_OK;
367 }
368
369 int jtag_unregister_event_callback(int (*callback)(enum jtag_event event, void *priv))
370 {
371 jtag_event_callback_t **callbacks_p = &jtag_event_callbacks;
372
373 if (callback == NULL)
374 {
375 return ERROR_INVALID_ARGUMENTS;
376 }
377
378 while (*callbacks_p)
379 {
380 jtag_event_callback_t **next = &((*callbacks_p)->next);
381 if ((*callbacks_p)->callback == callback)
382 {
383 free(*callbacks_p);
384 *callbacks_p = *next;
385 }
386 callbacks_p = next;
387 }
388
389 return ERROR_OK;
390 }
391
392 int jtag_call_event_callbacks(enum jtag_event event)
393 {
394 jtag_event_callback_t *callback = jtag_event_callbacks;
395
396 LOG_DEBUG("jtag event: %s", jtag_event_strings[event]);
397
398 while (callback)
399 {
400 callback->callback(event, callback->priv);
401 callback = callback->next;
402 }
403
404 return ERROR_OK;
405 }
406
407 static void jtag_checks(void)
408 {
409 assert(jtag_trst == 0);
410 }
411
412 static void jtag_prelude(tap_state_t state)
413 {
414 jtag_checks();
415
416 assert(state!=TAP_INVALID);
417
418 cmd_queue_cur_state = state;
419 }
420
421 void jtag_alloc_in_value32(scan_field_t *field)
422 {
423 interface_jtag_alloc_in_value32(field);
424 }
425
426 void jtag_add_ir_scan_noverify(int in_num_fields, const scan_field_t *in_fields, tap_state_t state)
427 {
428 int retval;
429 jtag_prelude(state);
430
431 retval=interface_jtag_add_ir_scan(in_num_fields, in_fields, state);
432 if (retval!=ERROR_OK)
433 jtag_error=retval;
434
435 }
436
437
438 /**
439 * Generate an IR SCAN with a list of scan fields with one entry for each enabled TAP.
440 *
441 * If the input field list contains an instruction value for a TAP then that is used
442 * otherwise the TAP is set to bypass.
443 *
444 * TAPs for which no fields are passed are marked as bypassed for subsequent DR SCANs.
445 *
446 */
447 void jtag_add_ir_scan(int in_num_fields, scan_field_t *in_fields, tap_state_t state)
448 {
449 if (jtag_verify&&jtag_verify_capture_ir)
450 {
451 /* 8 x 32 bit id's is enough for all invocations */
452
453 for (int j = 0; j < in_num_fields; j++)
454 {
455 /* if we are to run a verification of the ir scan, we need to get the input back.
456 * We may have to allocate space if the caller didn't ask for the input back.
457 */
458 in_fields[j].check_value=in_fields[j].tap->expected;
459 in_fields[j].check_mask=in_fields[j].tap->expected_mask;
460 }
461 jtag_add_scan_check(jtag_add_ir_scan_noverify, in_num_fields, in_fields, state);
462 } else
463 {
464 jtag_add_ir_scan_noverify(in_num_fields, in_fields, state);
465 }
466 }
467
468 /**
469 * Duplicate the scan fields passed into the function into an IR SCAN command
470 *
471 * This function assumes that the caller handles extra fields for bypassed TAPs
472 *
473 */
474 void jtag_add_plain_ir_scan(int in_num_fields, const scan_field_t *in_fields, tap_state_t state)
475 {
476 int retval;
477
478 jtag_prelude(state);
479
480 retval=interface_jtag_add_plain_ir_scan(in_num_fields, in_fields, state);
481 if (retval!=ERROR_OK)
482 jtag_error=retval;
483 }
484
485 void jtag_add_callback(jtag_callback1_t f, u8 *in)
486 {
487 interface_jtag_add_callback(f, in);
488 }
489
490 void jtag_add_callback4(jtag_callback_t f, u8 *in,
491 jtag_callback_data_t data1, jtag_callback_data_t data2,
492 jtag_callback_data_t data3)
493 {
494 interface_jtag_add_callback4(f, in, data1, data2, data3);
495 }
496
497 int jtag_check_value_inner(u8 *captured, u8 *in_check_value, u8 *in_check_mask, int num_bits);
498
499 static int jtag_check_value_mask_callback(u8 *in, jtag_callback_data_t data1, jtag_callback_data_t data2, jtag_callback_data_t data3)
500 {
501 return jtag_check_value_inner(in, (u8 *)data1, (u8 *)data2, (int)data3);
502 }
503
504 static void jtag_add_scan_check(void (*jtag_add_scan)(int in_num_fields, const scan_field_t *in_fields, tap_state_t state),
505 int in_num_fields, scan_field_t *in_fields, tap_state_t state)
506 {
507 for (int i = 0; i < in_num_fields; i++)
508 {
509 struct scan_field_s *field = &in_fields[i];
510 field->allocated = 0;
511 field->modified = 0;
512 if (field->check_value || field->in_value)
513 continue;
514 interface_jtag_add_scan_check_alloc(field);
515 field->modified = 1;
516 }
517
518 jtag_add_scan(in_num_fields, in_fields, state);
519
520 for (int i = 0; i < in_num_fields; i++)
521 {
522 if ((in_fields[i].check_value != NULL) && (in_fields[i].in_value != NULL))
523 {
524 /* this is synchronous for a minidriver */
525 jtag_add_callback4(jtag_check_value_mask_callback, in_fields[i].in_value,
526 (jtag_callback_data_t)in_fields[i].check_value,
527 (jtag_callback_data_t)in_fields[i].check_mask,
528 (jtag_callback_data_t)in_fields[i].num_bits);
529 }
530 if (in_fields[i].allocated)
531 {
532 free(in_fields[i].in_value);
533 }
534 if (in_fields[i].modified)
535 {
536 in_fields[i].in_value = NULL;
537 }
538 }
539 }
540
541 void jtag_add_dr_scan_check(int in_num_fields, scan_field_t *in_fields, tap_state_t state)
542 {
543 if (jtag_verify)
544 {
545 jtag_add_scan_check(jtag_add_dr_scan, in_num_fields, in_fields, state);
546 } else
547 {
548 jtag_add_dr_scan(in_num_fields, in_fields, state);
549 }
550 }
551
552
553 /**
554 * Generate a DR SCAN using the fields passed to the function
555 *
556 * For not bypassed TAPs the function checks in_fields and uses fields specified there.
557 * For bypassed TAPs the function generates a dummy 1bit field.
558 *
559 * The bypass status of TAPs is set by jtag_add_ir_scan().
560 *
561 */
562 void jtag_add_dr_scan(int in_num_fields, const scan_field_t *in_fields, tap_state_t state)
563 {
564 int retval;
565
566 jtag_prelude(state);
567
568 retval=interface_jtag_add_dr_scan(in_num_fields, in_fields, state);
569 if (retval!=ERROR_OK)
570 jtag_error=retval;
571 }
572
573
574
575 /**
576 * Duplicate the scan fields passed into the function into a DR SCAN command
577 *
578 * This function assumes that the caller handles extra fields for bypassed TAPs
579 *
580 */
581 void jtag_add_plain_dr_scan(int in_num_fields, const scan_field_t *in_fields, tap_state_t state)
582 {
583 int retval;
584
585 jtag_prelude(state);
586
587 retval=interface_jtag_add_plain_dr_scan(in_num_fields, in_fields, state);
588 if (retval!=ERROR_OK)
589 jtag_error=retval;
590 }
591
592 void jtag_add_dr_out(jtag_tap_t* tap,
593 int num_fields, const int* num_bits, const u32* value,
594 tap_state_t end_state)
595 {
596 assert(end_state != TAP_INVALID);
597
598 cmd_queue_cur_state = end_state;
599
600 interface_jtag_add_dr_out(tap,
601 num_fields, num_bits, value,
602 end_state);
603 }
604
605 void jtag_add_tlr(void)
606 {
607 jtag_prelude(TAP_RESET);
608
609 int retval;
610 retval=interface_jtag_add_tlr();
611 if (retval!=ERROR_OK)
612 jtag_error=retval;
613
614 jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
615 }
616
617 void jtag_add_pathmove(int num_states, const tap_state_t *path)
618 {
619 tap_state_t cur_state = cmd_queue_cur_state;
620 int i;
621 int retval;
622
623 /* the last state has to be a stable state */
624 if (!tap_is_state_stable(path[num_states - 1]))
625 {
626 LOG_ERROR("BUG: TAP path doesn't finish in a stable state");
627 exit(-1);
628 }
629
630 for (i=0; i<num_states; i++)
631 {
632 if (path[i] == TAP_RESET)
633 {
634 LOG_ERROR("BUG: TAP_RESET is not a valid state for pathmove sequences");
635 exit(-1);
636 }
637
638 if ( tap_state_transition(cur_state, true) != path[i]
639 && tap_state_transition(cur_state, false) != path[i])
640 {
641 LOG_ERROR("BUG: %s -> %s isn't a valid TAP transition", tap_state_name(cur_state), tap_state_name(path[i]));
642 exit(-1);
643 }
644 cur_state = path[i];
645 }
646
647 jtag_checks();
648
649 retval = interface_jtag_add_pathmove(num_states, path);
650 cmd_queue_cur_state = path[num_states - 1];
651 if (retval!=ERROR_OK)
652 jtag_error=retval;
653 }
654
655 void jtag_add_runtest(int num_cycles, tap_state_t state)
656 {
657 int retval;
658
659 jtag_prelude(state);
660
661 /* executed by sw or hw fifo */
662 retval=interface_jtag_add_runtest(num_cycles, state);
663 if (retval!=ERROR_OK)
664 jtag_error=retval;
665 }
666
667
668 void jtag_add_clocks( int num_cycles )
669 {
670 int retval;
671
672 if( !tap_is_state_stable(cmd_queue_cur_state) )
673 {
674 LOG_ERROR( "jtag_add_clocks() was called with TAP in non-stable state \"%s\"",
675 tap_state_name(cmd_queue_cur_state) );
676 jtag_error = ERROR_JTAG_NOT_STABLE_STATE;
677 return;
678 }
679
680 if( num_cycles > 0 )
681 {
682 jtag_checks();
683
684 retval = interface_jtag_add_clocks(num_cycles);
685 if (retval != ERROR_OK)
686 jtag_error=retval;
687 }
688 }
689
690 void jtag_add_reset(int req_tlr_or_trst, int req_srst)
691 {
692 int trst_with_tlr = 0;
693 int retval;
694
695 /* FIX!!! there are *many* different cases here. A better
696 * approach is needed for legal combinations of transitions...
697 */
698 if ((jtag_reset_config & RESET_HAS_SRST)&&
699 (jtag_reset_config & RESET_HAS_TRST)&&
700 ((jtag_reset_config & RESET_SRST_PULLS_TRST)==0))
701 {
702 if (((req_tlr_or_trst&&!jtag_trst)||
703 (!req_tlr_or_trst&&jtag_trst))&&
704 ((req_srst&&!jtag_srst)||
705 (!req_srst&&jtag_srst)))
706 {
707 /* FIX!!! srst_pulls_trst allows 1,1 => 0,0 transition.... */
708 //LOG_ERROR("BUG: transition of req_tlr_or_trst and req_srst in the same jtag_add_reset() call is undefined");
709 }
710 }
711
712 /* Make sure that jtag_reset_config allows the requested reset */
713 /* if SRST pulls TRST, we can't fulfill srst == 1 with trst == 0 */
714 if (((jtag_reset_config & RESET_SRST_PULLS_TRST) && (req_srst == 1)) && (!req_tlr_or_trst))
715 {
716 LOG_ERROR("BUG: requested reset would assert trst");
717 jtag_error=ERROR_FAIL;
718 return;
719 }
720
721 /* if TRST pulls SRST, we reset with TAP T-L-R */
722 if (((jtag_reset_config & RESET_TRST_PULLS_SRST) && (req_tlr_or_trst)) && (req_srst == 0))
723 {
724 trst_with_tlr = 1;
725 }
726
727 if (req_srst && !(jtag_reset_config & RESET_HAS_SRST))
728 {
729 LOG_ERROR("BUG: requested SRST assertion, but the current configuration doesn't support this");
730 jtag_error=ERROR_FAIL;
731 return;
732 }
733
734 if (req_tlr_or_trst)
735 {
736 if (!trst_with_tlr && (jtag_reset_config & RESET_HAS_TRST))
737 {
738 jtag_trst = 1;
739 } else
740 {
741 trst_with_tlr = 1;
742 }
743 } else
744 {
745 jtag_trst = 0;
746 }
747
748 jtag_srst = req_srst;
749
750 retval = interface_jtag_add_reset(jtag_trst, jtag_srst);
751 if (retval!=ERROR_OK)
752 {
753 jtag_error=retval;
754 return;
755 }
756 jtag_execute_queue();
757
758 if (jtag_srst)
759 {
760 LOG_DEBUG("SRST line asserted");
761 }
762 else
763 {
764 LOG_DEBUG("SRST line released");
765 if (jtag_nsrst_delay)
766 jtag_add_sleep(jtag_nsrst_delay * 1000);
767 }
768
769 if (trst_with_tlr)
770 {
771 LOG_DEBUG("JTAG reset with RESET instead of TRST");
772 jtag_set_end_state(TAP_RESET);
773 jtag_add_tlr();
774 return;
775 }
776
777 if (jtag_trst)
778 {
779 /* we just asserted nTRST, so we're now in Test-Logic-Reset,
780 * and inform possible listeners about this
781 */
782 LOG_DEBUG("TRST line asserted");
783 tap_set_state(TAP_RESET);
784 jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
785 }
786 else
787 {
788 if (jtag_ntrst_delay)
789 jtag_add_sleep(jtag_ntrst_delay * 1000);
790 }
791 }
792
793 tap_state_t jtag_set_end_state(tap_state_t state)
794 {
795 if ((state == TAP_DRSHIFT)||(state == TAP_IRSHIFT))
796 {
797 LOG_ERROR("BUG: TAP_DRSHIFT/IRSHIFT can't be end state. Calling code should use a larger scan field");
798 }
799
800 if (state!=TAP_INVALID)
801 cmd_queue_end_state = state;
802 return cmd_queue_end_state;
803 }
804
805 tap_state_t jtag_get_end_state(void)
806 {
807 return cmd_queue_end_state;
808 }
809
810 void jtag_add_sleep(u32 us)
811 {
812 keep_alive(); /* we might be running on a very slow JTAG clk */
813 int retval=interface_jtag_add_sleep(us);
814 if (retval!=ERROR_OK)
815 jtag_error=retval;
816 return;
817 }
818
819 int jtag_check_value_inner(u8 *captured, u8 *in_check_value, u8 *in_check_mask, int num_bits)
820 {
821 int retval = ERROR_OK;
822
823 int compare_failed = 0;
824
825 if (in_check_mask)
826 compare_failed = buf_cmp_mask(captured, in_check_value, in_check_mask, num_bits);
827 else
828 compare_failed = buf_cmp(captured, in_check_value, num_bits);
829
830 if (compare_failed){
831 /* An error handler could have caught the failing check
832 * only report a problem when there wasn't a handler, or if the handler
833 * acknowledged the error
834 */
835 /*
836 LOG_WARNING("TAP %s:",
837 jtag_tap_name(field->tap));
838 */
839 if (compare_failed)
840 {
841 char *captured_char = buf_to_str(captured, (num_bits > DEBUG_JTAG_IOZ) ? DEBUG_JTAG_IOZ : num_bits, 16);
842 char *in_check_value_char = buf_to_str(in_check_value, (num_bits > DEBUG_JTAG_IOZ) ? DEBUG_JTAG_IOZ : num_bits, 16);
843
844 if (in_check_mask)
845 {
846 char *in_check_mask_char;
847 in_check_mask_char = buf_to_str(in_check_mask, (num_bits > DEBUG_JTAG_IOZ) ? DEBUG_JTAG_IOZ : num_bits, 16);
848 LOG_WARNING("value captured during scan didn't pass the requested check:");
849 LOG_WARNING("captured: 0x%s check_value: 0x%s check_mask: 0x%s",
850 captured_char, in_check_value_char, in_check_mask_char);
851 free(in_check_mask_char);
852 }
853 else
854 {
855 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);
856 }
857
858 free(captured_char);
859 free(in_check_value_char);
860
861 retval = ERROR_JTAG_QUEUE_FAILED;
862 }
863
864 }
865 return retval;
866 }
867
868 void jtag_check_value_mask(scan_field_t *field, u8 *value, u8 *mask)
869 {
870 assert(field->in_value != NULL);
871
872 if (value==NULL)
873 {
874 /* no checking to do */
875 return;
876 }
877
878 jtag_execute_queue_noclear();
879
880 int retval=jtag_check_value_inner(field->in_value, value, mask, field->num_bits);
881 jtag_set_error(retval);
882 }
883
884
885
886 int default_interface_jtag_execute_queue(void)
887 {
888 if (NULL == jtag)
889 {
890 LOG_ERROR("No JTAG interface configured yet. "
891 "Issue 'init' command in startup scripts "
892 "before communicating with targets.");
893 return ERROR_FAIL;
894 }
895
896 return jtag->execute_queue();
897 }
898
899 void jtag_execute_queue_noclear(void)
900 {
901 /* each flush can take as much as 1-2ms on high bandwidth low latency interfaces.
902 * E.g. a JTAG over TCP/IP or USB....
903 */
904 jtag_flush_queue_count++;
905
906 int retval=interface_jtag_execute_queue();
907 /* we keep the first error */
908 if ((jtag_error==ERROR_OK)&&(retval!=ERROR_OK))
909 {
910 jtag_error=retval;
911 }
912 }
913
914 int jtag_get_flush_queue_count(void)
915 {
916 return jtag_flush_queue_count;
917 }
918
919 int jtag_execute_queue(void)
920 {
921 int retval;
922 jtag_execute_queue_noclear();
923 retval=jtag_error;
924 jtag_error=ERROR_OK;
925 return retval;
926 }
927
928 static int jtag_reset_callback(enum jtag_event event, void *priv)
929 {
930 jtag_tap_t *tap = priv;
931
932 LOG_DEBUG("-");
933
934 if (event == JTAG_TRST_ASSERTED)
935 {
936 buf_set_ones(tap->cur_instr, tap->ir_length);
937 tap->bypass = 1;
938 }
939
940 return ERROR_OK;
941 }
942
943 void jtag_sleep(u32 us)
944 {
945 alive_sleep(us/1000);
946 }
947
948 /// maximum number of JTAG devices expected in the chain
949 #define JTAG_MAX_CHAIN_SIZE 20
950
951 #define EXTRACT_MFG(X) (((X) & 0xffe) >> 1)
952 #define EXTRACT_PART(X) (((X) & 0xffff000) >> 12)
953 #define EXTRACT_VER(X) (((X) & 0xf0000000) >> 28)
954
955 static int jtag_examine_chain_execute(u8 *idcode_buffer, unsigned num_idcode)
956 {
957 scan_field_t field = {
958 .tap = NULL,
959 .num_bits = num_idcode * 32,
960 .out_value = idcode_buffer,
961 .in_value = idcode_buffer,
962 };
963
964 // initialize to the end of chain ID value
965 for (unsigned i = 0; i < JTAG_MAX_CHAIN_SIZE; i++)
966 buf_set_u32(idcode_buffer, i * 32, 32, 0x000000FF);
967
968 jtag_add_plain_dr_scan(1, &field, TAP_RESET);
969 return jtag_execute_queue();
970 }
971
972 static bool jtag_examine_chain_check(u8 *idcodes, unsigned count)
973 {
974 u8 zero_check = 0x0;
975 u8 one_check = 0xff;
976
977 for (unsigned i = 0; i < count * 4; i++)
978 {
979 zero_check |= idcodes[i];
980 one_check &= idcodes[i];
981 }
982
983 /* if there wasn't a single non-zero bit or if all bits were one,
984 * the scan is not valid */
985 if (zero_check == 0x00 || one_check == 0xff)
986 {
987 LOG_ERROR("JTAG communication failure: check connection, "
988 "JTAG interface, target power etc.");
989 return false;
990 }
991 return true;
992 }
993
994 static void jtag_examine_chain_display(enum log_levels level, const char *msg,
995 const char *name, u32 idcode)
996 {
997 log_printf_lf(level, __FILE__, __LINE__, __FUNCTION__,
998 "JTAG tap: %s %16.16s: 0x%08x "
999 "(mfg: 0x%3.3x, part: 0x%4.4x, ver: 0x%1.1x)",
1000 name, msg, idcode,
1001 EXTRACT_MFG(idcode), EXTRACT_PART(idcode), EXTRACT_VER(idcode) );
1002 }
1003
1004 static bool jtag_idcode_is_final(u32 idcode)
1005 {
1006 return idcode == 0x000000FF || idcode == 0xFFFFFFFF;
1007 }
1008
1009 /**
1010 * This helper checks that remaining bits in the examined chain data are
1011 * all as expected, but a single JTAG device requires only 64 bits to be
1012 * read back correctly. This can help identify and diagnose problems
1013 * with the JTAG chain earlier, gives more helpful/explicit error messages.
1014 */
1015 static void jtag_examine_chain_end(u8 *idcodes, unsigned count, unsigned max)
1016 {
1017 bool triggered = false;
1018 for ( ; count < max - 31; count += 32)
1019 {
1020 u32 idcode = buf_get_u32(idcodes, count, 32);
1021 // do not trigger the warning if the data looks good
1022 if (!triggered && jtag_idcode_is_final(idcode))
1023 continue;
1024 LOG_WARNING("Unexpected idcode after end of chain: %d 0x%08x",
1025 count, idcode);
1026 triggered = true;
1027 }
1028 }
1029
1030 static bool jtag_examine_chain_match_tap(const struct jtag_tap_s *tap)
1031 {
1032 if (0 == tap->expected_ids_cnt)
1033 {
1034 /// @todo Enable LOG_INFO to ask for reports about unknown TAP IDs.
1035 #if 0
1036 LOG_INFO("Uknown JTAG TAP ID: 0x%08x", tap->idcode)
1037 LOG_INFO("Please report the chip name and reported ID code to the openocd project");
1038 #endif
1039 return true;
1040 }
1041
1042 /* Loop over the expected identification codes and test for a match */
1043 u8 ii;
1044 for (ii = 0; ii < tap->expected_ids_cnt; ii++)
1045 {
1046 if (tap->idcode == tap->expected_ids[ii])
1047 break;
1048 }
1049
1050 /* If none of the expected ids matched, log an error */
1051 if (ii != tap->expected_ids_cnt)
1052 {
1053 LOG_INFO("JTAG Tap/device matched");
1054 return true;
1055 }
1056 jtag_examine_chain_display(LOG_LVL_ERROR, "got",
1057 tap->dotted_name, tap->idcode);
1058 for (ii = 0; ii < tap->expected_ids_cnt; ii++)
1059 {
1060 char msg[32];
1061 snprintf(msg, sizeof(msg), "expected %hhu of %hhu",
1062 ii + 1, tap->expected_ids_cnt);
1063 jtag_examine_chain_display(LOG_LVL_ERROR, msg,
1064 tap->dotted_name, tap->expected_ids[ii]);
1065 }
1066 return false;
1067 }
1068
1069 /* Try to examine chain layout according to IEEE 1149.1 §12
1070 */
1071 static int jtag_examine_chain(void)
1072 {
1073 u8 idcode_buffer[JTAG_MAX_CHAIN_SIZE * 4];
1074 unsigned device_count = 0;
1075
1076 jtag_examine_chain_execute(idcode_buffer, JTAG_MAX_CHAIN_SIZE);
1077
1078 if (!jtag_examine_chain_check(idcode_buffer, JTAG_MAX_CHAIN_SIZE))
1079 return ERROR_JTAG_INIT_FAILED;
1080
1081 /* point at the 1st tap */
1082 jtag_tap_t *tap = jtag_tap_next_enabled(NULL);
1083 if (tap == NULL)
1084 {
1085 LOG_ERROR("JTAG: No taps enabled?");
1086 return ERROR_JTAG_INIT_FAILED;
1087 }
1088
1089 for (unsigned bit_count = 0; bit_count < (JTAG_MAX_CHAIN_SIZE * 32) - 31;)
1090 {
1091 u32 idcode = buf_get_u32(idcode_buffer, bit_count, 32);
1092 if ((idcode & 1) == 0)
1093 {
1094 /* LSB must not be 0, this indicates a device in bypass */
1095 LOG_WARNING("Tap/Device does not have IDCODE");
1096 idcode=0;
1097
1098 bit_count += 1;
1099 }
1100 else
1101 {
1102 /*
1103 * End of chain (invalid manufacturer ID) some devices, such
1104 * as AVR will output all 1's instead of TDI input value at
1105 * end of chain.
1106 */
1107 if (jtag_idcode_is_final(idcode))
1108 {
1109 jtag_examine_chain_end(idcode_buffer,
1110 bit_count + 32, JTAG_MAX_CHAIN_SIZE * 32);
1111 break;
1112 }
1113
1114 jtag_examine_chain_display(LOG_LVL_INFO, "tap/device found",
1115 tap ? tap->dotted_name : "(not-named)",
1116 idcode);
1117
1118 bit_count += 32;
1119 }
1120 device_count++;
1121 if (!tap)
1122 continue;
1123
1124 tap->idcode = idcode;
1125
1126 // ensure the TAP ID does matches what was expected
1127 if (!jtag_examine_chain_match_tap(tap))
1128 return ERROR_JTAG_INIT_FAILED;
1129
1130 tap = jtag_tap_next_enabled(tap);
1131 }
1132
1133 /* see if number of discovered devices matches configuration */
1134 if (device_count != jtag_tap_count_enabled())
1135 {
1136 LOG_ERROR("number of discovered devices in JTAG chain (%i) "
1137 "does not match (enabled) configuration (%i), total taps: %d",
1138 device_count, jtag_tap_count_enabled(), jtag_tap_count());
1139 LOG_ERROR("check the config file and ensure proper JTAG communication"
1140 " (connections, speed, ...)");
1141 return ERROR_JTAG_INIT_FAILED;
1142 }
1143
1144 return ERROR_OK;
1145 }
1146
1147 static int jtag_validate_chain(void)
1148 {
1149 jtag_tap_t *tap;
1150 int total_ir_length = 0;
1151 u8 *ir_test = NULL;
1152 scan_field_t field;
1153 int chain_pos = 0;
1154
1155 tap = NULL;
1156 total_ir_length = 0;
1157 for(;;){
1158 tap = jtag_tap_next_enabled(tap);
1159 if( tap == NULL ){
1160 break;
1161 }
1162 total_ir_length += tap->ir_length;
1163 }
1164
1165 total_ir_length += 2;
1166 ir_test = malloc(CEIL(total_ir_length, 8));
1167 buf_set_ones(ir_test, total_ir_length);
1168
1169 field.tap = NULL;
1170 field.num_bits = total_ir_length;
1171 field.out_value = ir_test;
1172 field.in_value = ir_test;
1173
1174
1175 jtag_add_plain_ir_scan(1, &field, TAP_RESET);
1176 jtag_execute_queue();
1177
1178 tap = NULL;
1179 chain_pos = 0;
1180 int val;
1181 for(;;){
1182 tap = jtag_tap_next_enabled(tap);
1183 if( tap == NULL ){
1184 break;
1185 }
1186
1187 val = buf_get_u32(ir_test, chain_pos, 2);
1188 if (val != 0x1)
1189 {
1190 char *cbuf = buf_to_str(ir_test, total_ir_length, 16);
1191 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);
1192 free(cbuf);
1193 free(ir_test);
1194 return ERROR_JTAG_INIT_FAILED;
1195 }
1196 chain_pos += tap->ir_length;
1197 }
1198
1199 val = buf_get_u32(ir_test, chain_pos, 2);
1200 if (val != 0x3)
1201 {
1202 char *cbuf = buf_to_str(ir_test, total_ir_length, 16);
1203 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);
1204 free(cbuf);
1205 free(ir_test);
1206 return ERROR_JTAG_INIT_FAILED;
1207 }
1208
1209 free(ir_test);
1210
1211 return ERROR_OK;
1212 }
1213
1214 enum jtag_tap_cfg_param {
1215 JCFG_EVENT
1216 };
1217
1218 static Jim_Nvp nvp_config_opts[] = {
1219 { .name = "-event", .value = JCFG_EVENT },
1220
1221 { .name = NULL, .value = -1 }
1222 };
1223
1224 static int jtag_tap_configure_cmd( Jim_GetOptInfo *goi, jtag_tap_t * tap)
1225 {
1226 Jim_Nvp *n;
1227 Jim_Obj *o;
1228 int e;
1229
1230 /* parse config or cget options */
1231 while (goi->argc > 0) {
1232 Jim_SetEmptyResult (goi->interp);
1233
1234 e = Jim_GetOpt_Nvp(goi, nvp_config_opts, &n);
1235 if (e != JIM_OK) {
1236 Jim_GetOpt_NvpUnknown(goi, nvp_config_opts, 0);
1237 return e;
1238 }
1239
1240 switch (n->value) {
1241 case JCFG_EVENT:
1242 if (goi->argc == 0) {
1243 Jim_WrongNumArgs( goi->interp, goi->argc, goi->argv, "-event ?event-name? ..." );
1244 return JIM_ERR;
1245 }
1246
1247 e = Jim_GetOpt_Nvp( goi, nvp_jtag_tap_event, &n );
1248 if (e != JIM_OK) {
1249 Jim_GetOpt_NvpUnknown(goi, nvp_jtag_tap_event, 1);
1250 return e;
1251 }
1252
1253 if (goi->isconfigure) {
1254 if (goi->argc != 1) {
1255 Jim_WrongNumArgs(goi->interp, goi->argc, goi->argv, "-event ?event-name? ?EVENT-BODY?");
1256 return JIM_ERR;
1257 }
1258 } else {
1259 if (goi->argc != 0) {
1260 Jim_WrongNumArgs(goi->interp, goi->argc, goi->argv, "-event ?event-name?");
1261 return JIM_ERR;
1262 }
1263 }
1264
1265 {
1266 jtag_tap_event_action_t *jteap;
1267
1268 jteap = tap->event_action;
1269 /* replace existing? */
1270 while (jteap) {
1271 if (jteap->event == (enum jtag_tap_event)n->value) {
1272 break;
1273 }
1274 jteap = jteap->next;
1275 }
1276
1277 if (goi->isconfigure) {
1278 if (jteap == NULL) {
1279 /* create new */
1280 jteap = calloc(1, sizeof (*jteap));
1281 }
1282 jteap->event = n->value;
1283 Jim_GetOpt_Obj( goi, &o);
1284 if (jteap->body) {
1285 Jim_DecrRefCount(interp, jteap->body);
1286 }
1287 jteap->body = Jim_DuplicateObj(goi->interp, o);
1288 Jim_IncrRefCount(jteap->body);
1289
1290 /* add to head of event list */
1291 jteap->next = tap->event_action;
1292 tap->event_action = jteap;
1293 Jim_SetEmptyResult(goi->interp);
1294 } else {
1295 /* get */
1296 if (jteap == NULL) {
1297 Jim_SetEmptyResult(goi->interp);
1298 } else {
1299 Jim_SetResult(goi->interp, Jim_DuplicateObj(goi->interp, jteap->body));
1300 }
1301 }
1302 }
1303 /* loop for more */
1304 break;
1305 }
1306 } /* while (goi->argc) */
1307
1308 return JIM_OK;
1309 }
1310
1311
1312 static void jtag_tap_init(jtag_tap_t *tap)
1313 {
1314 assert(0 != tap->ir_length);
1315
1316 tap->expected = malloc(tap->ir_length);
1317 tap->expected_mask = malloc(tap->ir_length);
1318 tap->cur_instr = malloc(tap->ir_length);
1319
1320 buf_set_u32(tap->expected, 0, tap->ir_length, tap->ir_capture_value);
1321 buf_set_u32(tap->expected_mask, 0, tap->ir_length, tap->ir_capture_mask);
1322 buf_set_ones(tap->cur_instr, tap->ir_length);
1323
1324 // place TAP in bypass mode
1325 tap->bypass = 1;
1326 // register the reset callback for the TAP
1327 jtag_register_event_callback(&jtag_reset_callback, tap);
1328
1329 LOG_DEBUG("Created Tap: %s @ abs position %d, "
1330 "irlen %d, capture: 0x%x mask: 0x%x", tap->dotted_name,
1331 tap->abs_chain_position, tap->ir_length,
1332 tap->ir_capture_value, tap->ir_capture_mask);
1333 jtag_tap_add(tap);
1334 }
1335
1336 static void jtag_tap_free(jtag_tap_t *tap)
1337 {
1338 /// @todo is anything missing? no memory leaks please
1339 free((void *)tap->expected_ids);
1340 free((void *)tap->chip);
1341 free((void *)tap->tapname);
1342 free((void *)tap->dotted_name);
1343 free(tap);
1344 }
1345
1346 static int jim_newtap_cmd( Jim_GetOptInfo *goi )
1347 {
1348 jtag_tap_t *pTap;
1349 jim_wide w;
1350 int x;
1351 int e;
1352 int reqbits;
1353 Jim_Nvp *n;
1354 char *cp;
1355 const Jim_Nvp opts[] = {
1356 #define NTAP_OPT_IRLEN 0
1357 { .name = "-irlen" , .value = NTAP_OPT_IRLEN },
1358 #define NTAP_OPT_IRMASK 1
1359 { .name = "-irmask" , .value = NTAP_OPT_IRMASK },
1360 #define NTAP_OPT_IRCAPTURE 2
1361 { .name = "-ircapture" , .value = NTAP_OPT_IRCAPTURE },
1362 #define NTAP_OPT_ENABLED 3
1363 { .name = "-enable" , .value = NTAP_OPT_ENABLED },
1364 #define NTAP_OPT_DISABLED 4
1365 { .name = "-disable" , .value = NTAP_OPT_DISABLED },
1366 #define NTAP_OPT_EXPECTED_ID 5
1367 { .name = "-expected-id" , .value = NTAP_OPT_EXPECTED_ID },
1368 { .name = NULL , .value = -1 },
1369 };
1370
1371 pTap = malloc( sizeof(jtag_tap_t) );
1372 memset( pTap, 0, sizeof(*pTap) );
1373 if( !pTap ){
1374 Jim_SetResult_sprintf( goi->interp, "no memory");
1375 return JIM_ERR;
1376 }
1377 /*
1378 * we expect CHIP + TAP + OPTIONS
1379 * */
1380 if( goi->argc < 3 ){
1381 Jim_SetResult_sprintf(goi->interp, "Missing CHIP TAP OPTIONS ....");
1382 return JIM_ERR;
1383 }
1384 Jim_GetOpt_String( goi, &cp, NULL );
1385 pTap->chip = strdup(cp);
1386
1387 Jim_GetOpt_String( goi, &cp, NULL );
1388 pTap->tapname = strdup(cp);
1389
1390 /* name + dot + name + null */
1391 x = strlen(pTap->chip) + 1 + strlen(pTap->tapname) + 1;
1392 cp = malloc( x );
1393 sprintf( cp, "%s.%s", pTap->chip, pTap->tapname );
1394 pTap->dotted_name = cp;
1395
1396 LOG_DEBUG("Creating New Tap, Chip: %s, Tap: %s, Dotted: %s, %d params",
1397 pTap->chip, pTap->tapname, pTap->dotted_name, goi->argc);
1398
1399 /* default is enabled */
1400 pTap->enabled = 1;
1401
1402 /* deal with options */
1403 #define NTREQ_IRLEN 1
1404 #define NTREQ_IRCAPTURE 2
1405 #define NTREQ_IRMASK 4
1406
1407 /* clear them as we find them */
1408 reqbits = (NTREQ_IRLEN | NTREQ_IRCAPTURE | NTREQ_IRMASK);
1409
1410 while( goi->argc ){
1411 e = Jim_GetOpt_Nvp( goi, opts, &n );
1412 if( e != JIM_OK ){
1413 Jim_GetOpt_NvpUnknown( goi, opts, 0 );
1414 return e;
1415 }
1416 LOG_DEBUG("Processing option: %s", n->name );
1417 switch( n->value ){
1418 case NTAP_OPT_ENABLED:
1419 pTap->enabled = 1;
1420 break;
1421 case NTAP_OPT_DISABLED:
1422 pTap->enabled = 0;
1423 break;
1424 case NTAP_OPT_EXPECTED_ID:
1425 {
1426 u32 *new_expected_ids;
1427
1428 e = Jim_GetOpt_Wide( goi, &w );
1429 if( e != JIM_OK) {
1430 Jim_SetResult_sprintf(goi->interp, "option: %s bad parameter", n->name);
1431 return e;
1432 }
1433
1434 new_expected_ids = malloc(sizeof(u32) * (pTap->expected_ids_cnt + 1));
1435 if (new_expected_ids == NULL) {
1436 Jim_SetResult_sprintf( goi->interp, "no memory");
1437 return JIM_ERR;
1438 }
1439
1440 memcpy(new_expected_ids, pTap->expected_ids, sizeof(u32) * pTap->expected_ids_cnt);
1441
1442 new_expected_ids[pTap->expected_ids_cnt] = w;
1443
1444 free(pTap->expected_ids);
1445 pTap->expected_ids = new_expected_ids;
1446 pTap->expected_ids_cnt++;
1447 break;
1448 }
1449 case NTAP_OPT_IRLEN:
1450 case NTAP_OPT_IRMASK:
1451 case NTAP_OPT_IRCAPTURE:
1452 e = Jim_GetOpt_Wide( goi, &w );
1453 if( e != JIM_OK ){
1454 Jim_SetResult_sprintf( goi->interp, "option: %s bad parameter", n->name );
1455 return e;
1456 }
1457 if( (w < 0) || (w > 0xffff) ){
1458 /* wacky value */
1459 Jim_SetResult_sprintf( goi->interp, "option: %s - wacky value: %d (0x%x)",
1460 n->name, (int)(w), (int)(w));
1461 return JIM_ERR;
1462 }
1463 switch(n->value){
1464 case NTAP_OPT_IRLEN:
1465 pTap->ir_length = w;
1466 reqbits &= (~(NTREQ_IRLEN));
1467 break;
1468 case NTAP_OPT_IRMASK:
1469 pTap->ir_capture_mask = w;
1470 reqbits &= (~(NTREQ_IRMASK));
1471 break;
1472 case NTAP_OPT_IRCAPTURE:
1473 pTap->ir_capture_value = w;
1474 reqbits &= (~(NTREQ_IRCAPTURE));
1475 break;
1476 }
1477 } /* switch(n->value) */
1478 } /* while( goi->argc ) */
1479
1480 /* Did all the required option bits get cleared? */
1481 if (0 == reqbits)
1482 {
1483 jtag_tap_init(pTap);
1484 return ERROR_OK;
1485 }
1486
1487 Jim_SetResult_sprintf( goi->interp,
1488 "newtap: %s missing required parameters",
1489 pTap->dotted_name);
1490 jtag_tap_free(pTap);
1491 return JIM_ERR;
1492 }
1493
1494 static int jim_jtag_command( Jim_Interp *interp, int argc, Jim_Obj *const *argv )
1495 {
1496 Jim_GetOptInfo goi;
1497 int e;
1498 Jim_Nvp *n;
1499 Jim_Obj *o;
1500 struct command_context_s *context;
1501
1502 enum {
1503 JTAG_CMD_INTERFACE,
1504 JTAG_CMD_INIT_RESET,
1505 JTAG_CMD_NEWTAP,
1506 JTAG_CMD_TAPENABLE,
1507 JTAG_CMD_TAPDISABLE,
1508 JTAG_CMD_TAPISENABLED,
1509 JTAG_CMD_CONFIGURE,
1510 JTAG_CMD_CGET
1511 };
1512
1513 const Jim_Nvp jtag_cmds[] = {
1514 { .name = "interface" , .value = JTAG_CMD_INTERFACE },
1515 { .name = "arp_init-reset", .value = JTAG_CMD_INIT_RESET },
1516 { .name = "newtap" , .value = JTAG_CMD_NEWTAP },
1517 { .name = "tapisenabled" , .value = JTAG_CMD_TAPISENABLED },
1518 { .name = "tapenable" , .value = JTAG_CMD_TAPENABLE },
1519 { .name = "tapdisable" , .value = JTAG_CMD_TAPDISABLE },
1520 { .name = "configure" , .value = JTAG_CMD_CONFIGURE },
1521 { .name = "cget" , .value = JTAG_CMD_CGET },
1522
1523 { .name = NULL, .value = -1 },
1524 };
1525
1526 context = Jim_GetAssocData(interp, "context");
1527 /* go past the command */
1528 Jim_GetOpt_Setup( &goi, interp, argc-1, argv+1 );
1529
1530 e = Jim_GetOpt_Nvp( &goi, jtag_cmds, &n );
1531 if( e != JIM_OK ){
1532 Jim_GetOpt_NvpUnknown( &goi, jtag_cmds, 0 );
1533 return e;
1534 }
1535 Jim_SetEmptyResult( goi.interp );
1536 switch( n->value ){
1537 case JTAG_CMD_INTERFACE:
1538 /* return the name of the interface */
1539 /* TCL code might need to know the exact type... */
1540 /* FUTURE: we allow this as a means to "set" the interface. */
1541 if( goi.argc != 0 ){
1542 Jim_WrongNumArgs( goi.interp, 1, goi.argv-1, "(no params)");
1543 return JIM_ERR;
1544 }
1545 Jim_SetResultString( goi.interp, jtag_interface->name, -1 );
1546 return JIM_OK;
1547 case JTAG_CMD_INIT_RESET:
1548 if( goi.argc != 0 ){
1549 Jim_WrongNumArgs( goi.interp, 1, goi.argv-1, "(no params)");
1550 return JIM_ERR;
1551 }
1552 e = jtag_init_reset(context);
1553 if( e != ERROR_OK ){
1554 Jim_SetResult_sprintf( goi.interp, "error: %d", e);
1555 return JIM_ERR;
1556 }
1557 return JIM_OK;
1558 case JTAG_CMD_NEWTAP:
1559 return jim_newtap_cmd( &goi );
1560 break;
1561 case JTAG_CMD_TAPISENABLED:
1562 case JTAG_CMD_TAPENABLE:
1563 case JTAG_CMD_TAPDISABLE:
1564 if( goi.argc != 1 ){
1565 Jim_SetResultString( goi.interp, "Too many parameters",-1 );
1566 return JIM_ERR;
1567 }
1568
1569 {
1570 jtag_tap_t *t;
1571 t = jtag_tap_by_jim_obj( goi.interp, goi.argv[0] );
1572 if( t == NULL ){
1573 return JIM_ERR;
1574 }
1575 switch( n->value ){
1576 case JTAG_CMD_TAPISENABLED:
1577 e = t->enabled;
1578 break;
1579 case JTAG_CMD_TAPENABLE:
1580 jtag_tap_handle_event( t, JTAG_TAP_EVENT_ENABLE);
1581 e = 1;
1582 t->enabled = e;
1583 break;
1584 case JTAG_CMD_TAPDISABLE:
1585 jtag_tap_handle_event( t, JTAG_TAP_EVENT_DISABLE);
1586 e = 0;
1587 t->enabled = e;
1588 break;
1589 }
1590 Jim_SetResult( goi.interp, Jim_NewIntObj( goi.interp, e ) );
1591 return JIM_OK;
1592 }
1593 break;
1594
1595 case JTAG_CMD_CGET:
1596 if( goi.argc < 2 ){
1597 Jim_WrongNumArgs( goi.interp, 0, NULL, "?tap-name? -option ...");
1598 return JIM_ERR;
1599 }
1600
1601 {
1602 jtag_tap_t *t;
1603
1604 Jim_GetOpt_Obj(&goi, &o);
1605 t = jtag_tap_by_jim_obj( goi.interp, o );
1606 if( t == NULL ){
1607 return JIM_ERR;
1608 }
1609
1610 goi.isconfigure = 0;
1611 return jtag_tap_configure_cmd( &goi, t);
1612 }
1613 break;
1614
1615 case JTAG_CMD_CONFIGURE:
1616 if( goi.argc < 3 ){
1617 Jim_WrongNumArgs( goi.interp, 0, NULL, "?tap-name? -option ?VALUE? ...");
1618 return JIM_ERR;
1619 }
1620
1621 {
1622 jtag_tap_t *t;
1623
1624 Jim_GetOpt_Obj(&goi, &o);
1625 t = jtag_tap_by_jim_obj( goi.interp, o );
1626 if( t == NULL ){
1627 return JIM_ERR;
1628 }
1629
1630 goi.isconfigure = 1;
1631 return jtag_tap_configure_cmd( &goi, t);
1632 }
1633 }
1634
1635 return JIM_ERR;
1636 }
1637
1638 int jtag_register_commands(struct command_context_s *cmd_ctx)
1639 {
1640 register_jim( cmd_ctx, "jtag", jim_jtag_command, "perform jtag tap actions");
1641
1642 register_command(cmd_ctx, NULL, "interface", handle_interface_command,
1643 COMMAND_CONFIG, "try to configure interface");
1644 register_command(cmd_ctx, NULL, "jtag_speed", handle_jtag_speed_command,
1645 COMMAND_ANY, "(DEPRECATED) set jtag speed (if supported)");
1646 register_command(cmd_ctx, NULL, "jtag_khz", handle_jtag_khz_command,
1647 COMMAND_ANY, "set maximum jtag speed (if supported); "
1648 "parameter is maximum khz, or 0 for adaptive clocking (RTCK).");
1649 register_command(cmd_ctx, NULL, "jtag_device", handle_jtag_device_command,
1650 COMMAND_CONFIG, "(DEPRECATED) jtag_device <ir_length> <ir_expected> <ir_mask>");
1651 register_command(cmd_ctx, NULL, "reset_config", handle_reset_config_command,
1652 COMMAND_ANY,
1653 "[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]");
1654 register_command(cmd_ctx, NULL, "jtag_nsrst_delay", handle_jtag_nsrst_delay_command,
1655 COMMAND_ANY, "jtag_nsrst_delay <ms> - delay after deasserting srst in ms");
1656 register_command(cmd_ctx, NULL, "jtag_ntrst_delay", handle_jtag_ntrst_delay_command,
1657 COMMAND_ANY, "jtag_ntrst_delay <ms> - delay after deasserting trst in ms");
1658
1659 register_command(cmd_ctx, NULL, "scan_chain", handle_scan_chain_command,
1660 COMMAND_EXEC, "print current scan chain configuration");
1661
1662 register_command(cmd_ctx, NULL, "endstate", handle_endstate_command,
1663 COMMAND_EXEC, "finish JTAG operations in <tap_state>");
1664 register_command(cmd_ctx, NULL, "jtag_reset", handle_jtag_reset_command,
1665 COMMAND_EXEC, "toggle reset lines <trst> <srst>");
1666 register_command(cmd_ctx, NULL, "runtest", handle_runtest_command,
1667 COMMAND_EXEC, "move to Run-Test/Idle, and execute <num_cycles>");
1668 register_command(cmd_ctx, NULL, "irscan", handle_irscan_command,
1669 COMMAND_EXEC, "execute IR scan <device> <instr> [dev2] [instr2] ...");
1670 register_jim(cmd_ctx, "drscan", Jim_Command_drscan, "execute DR scan <device> <num_bits> <value> <num_bits1> <value2> ...");
1671 register_jim(cmd_ctx, "flush_count", Jim_Command_flush_count, "returns number of times the JTAG queue has been flushed");
1672
1673 register_command(cmd_ctx, NULL, "verify_ircapture", handle_verify_ircapture_command,
1674 COMMAND_ANY, "verify value captured during Capture-IR <enable|disable>");
1675 register_command(cmd_ctx, NULL, "verify_jtag", handle_verify_jtag_command,
1676 COMMAND_ANY, "verify value capture <enable|disable>");
1677 register_command(cmd_ctx, NULL, "tms_sequence", handle_tms_sequence_command,
1678 COMMAND_ANY, "choose short(default) or long tms_sequence <short|long>");
1679 return ERROR_OK;
1680 }
1681
1682 int jtag_interface_init(struct command_context_s *cmd_ctx)
1683 {
1684 if (jtag)
1685 return ERROR_OK;
1686
1687 if (!jtag_interface)
1688 {
1689 /* nothing was previously specified by "interface" command */
1690 LOG_ERROR("JTAG interface has to be specified, see \"interface\" command");
1691 return ERROR_JTAG_INVALID_INTERFACE;
1692 }
1693 if(hasKHz)
1694 {
1695 jtag_interface->khz(jtag_get_speed_khz(), &jtag_speed);
1696 hasKHz = false;
1697 }
1698
1699 if (jtag_interface->init() != ERROR_OK)
1700 return ERROR_JTAG_INIT_FAILED;
1701
1702 jtag = jtag_interface;
1703 return ERROR_OK;
1704 }
1705
1706 static int jtag_init_inner(struct command_context_s *cmd_ctx)
1707 {
1708 jtag_tap_t *tap;
1709 int retval;
1710
1711 LOG_DEBUG("Init JTAG chain");
1712
1713 tap = jtag_tap_next_enabled(NULL);
1714 if( tap == NULL ){
1715 LOG_ERROR("There are no enabled taps?");
1716 return ERROR_JTAG_INIT_FAILED;
1717 }
1718
1719 jtag_add_tlr();
1720 if ((retval=jtag_execute_queue())!=ERROR_OK)
1721 return retval;
1722
1723 /* examine chain first, as this could discover the real chain layout */
1724 if (jtag_examine_chain() != ERROR_OK)
1725 {
1726 LOG_ERROR("trying to validate configured JTAG chain anyway...");
1727 }
1728
1729 if (jtag_validate_chain() != ERROR_OK)
1730 {
1731 LOG_WARNING("Could not validate JTAG chain, continuing anyway...");
1732 }
1733
1734 return ERROR_OK;
1735 }
1736
1737 int jtag_interface_quit(void)
1738 {
1739 if (!jtag || !jtag->quit)
1740 return ERROR_OK;
1741
1742 // close the JTAG interface
1743 int result = jtag->quit();
1744 if (ERROR_OK != result)
1745 LOG_ERROR("failed: %d", result);
1746
1747 return ERROR_OK;
1748 }
1749
1750
1751 int jtag_init_reset(struct command_context_s *cmd_ctx)
1752 {
1753 int retval;
1754
1755 if ((retval=jtag_interface_init(cmd_ctx)) != ERROR_OK)
1756 return retval;
1757
1758 LOG_DEBUG("Trying to bring the JTAG controller to life by asserting TRST / RESET");
1759
1760 /* Reset can happen after a power cycle.
1761 *
1762 * Ideally we would only assert TRST or run RESET before the target reset.
1763 *
1764 * However w/srst_pulls_trst, trst is asserted together with the target
1765 * reset whether we want it or not.
1766 *
1767 * NB! Some targets have JTAG circuitry disabled until a
1768 * trst & srst has been asserted.
1769 *
1770 * NB! here we assume nsrst/ntrst delay are sufficient!
1771 *
1772 * NB! order matters!!!! srst *can* disconnect JTAG circuitry
1773 *
1774 */
1775 jtag_add_reset(1, 0); /* RESET or TRST */
1776 if (jtag_reset_config & RESET_HAS_SRST)
1777 {
1778 jtag_add_reset(1, 1);
1779 if ((jtag_reset_config & RESET_SRST_PULLS_TRST)==0)
1780 jtag_add_reset(0, 1);
1781 }
1782 jtag_add_reset(0, 0);
1783 if ((retval = jtag_execute_queue()) != ERROR_OK)
1784 return retval;
1785
1786 /* Check that we can communication on the JTAG chain + eventually we want to
1787 * be able to perform enumeration only after OpenOCD has started
1788 * telnet and GDB server
1789 *
1790 * That would allow users to more easily perform any magic they need to before
1791 * reset happens.
1792 */
1793 return jtag_init_inner(cmd_ctx);
1794 }
1795
1796 int jtag_init(struct command_context_s *cmd_ctx)
1797 {
1798 int retval;
1799 if ((retval=jtag_interface_init(cmd_ctx)) != ERROR_OK)
1800 return retval;
1801 if (jtag_init_inner(cmd_ctx)==ERROR_OK)
1802 {
1803 return ERROR_OK;
1804 }
1805 return jtag_init_reset(cmd_ctx);
1806 }
1807
1808 void jtag_set_speed_khz(unsigned khz)
1809 {
1810 speed_khz = khz;
1811 }
1812 unsigned jtag_get_speed_khz(void)
1813 {
1814 return speed_khz;
1815 }
1816
1817 static int default_khz(int khz, int *jtag_speed)
1818 {
1819 LOG_ERROR("Translation from khz to jtag_speed not implemented");
1820 return ERROR_FAIL;
1821 }
1822
1823 static int default_speed_div(int speed, int *khz)
1824 {
1825 LOG_ERROR("Translation from jtag_speed to khz not implemented");
1826 return ERROR_FAIL;
1827 }
1828
1829 static int default_power_dropout(int *dropout)
1830 {
1831 *dropout=0; /* by default we can't detect power dropout */
1832 return ERROR_OK;
1833 }
1834
1835 static int default_srst_asserted(int *srst_asserted)
1836 {
1837 *srst_asserted=0; /* by default we can't detect srst asserted */
1838 return ERROR_OK;
1839 }
1840
1841 static int handle_interface_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1842 {
1843 int i;
1844 int retval;
1845
1846 /* check whether the interface is already configured */
1847 if (jtag_interface)
1848 {
1849 LOG_WARNING("Interface already configured, ignoring");
1850 return ERROR_OK;
1851 }
1852
1853 /* interface name is a mandatory argument */
1854 if (argc < 1 || args[0][0] == '\0')
1855 {
1856 return ERROR_COMMAND_SYNTAX_ERROR;
1857 }
1858
1859 for (i=0; jtag_interfaces[i]; i++)
1860 {
1861 if (strcmp(args[0], jtag_interfaces[i]->name) == 0)
1862 {
1863 if ((retval = jtag_interfaces[i]->register_commands(cmd_ctx)) != ERROR_OK)
1864 {
1865 return retval;
1866 }
1867
1868 jtag_interface = jtag_interfaces[i];
1869
1870 if (jtag_interface->khz == NULL)
1871 {
1872 jtag_interface->khz = default_khz;
1873 }
1874 if (jtag_interface->speed_div == NULL)
1875 {
1876 jtag_interface->speed_div = default_speed_div;
1877 }
1878 if (jtag_interface->power_dropout == NULL)
1879 {
1880 jtag_interface->power_dropout = default_power_dropout;
1881 }
1882 if (jtag_interface->srst_asserted == NULL)
1883 {
1884 jtag_interface->srst_asserted = default_srst_asserted;
1885 }
1886
1887 return ERROR_OK;
1888 }
1889 }
1890
1891 /* no valid interface was found (i.e. the configuration option,
1892 * didn't match one of the compiled-in interfaces
1893 */
1894 LOG_ERROR("No valid jtag interface found (%s)", args[0]);
1895 LOG_ERROR("compiled-in jtag interfaces:");
1896 for (i = 0; jtag_interfaces[i]; i++)
1897 {
1898 LOG_ERROR("%i: %s", i, jtag_interfaces[i]->name);
1899 }
1900
1901 return ERROR_JTAG_INVALID_INTERFACE;
1902 }
1903
1904 static int handle_jtag_device_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1905 {
1906 int e;
1907 char buf[1024];
1908 Jim_Obj *newargs[ 10 ];
1909 /*
1910 * CONVERT SYNTAX
1911 * argv[-1] = command
1912 * argv[ 0] = ir length
1913 * argv[ 1] = ir capture
1914 * argv[ 2] = ir mask
1915 * argv[ 3] = not actually used by anything but in the docs
1916 */
1917
1918 if( argc < 4 ){
1919 command_print( cmd_ctx, "OLD DEPRECATED SYNTAX: Please use the NEW syntax");
1920 return ERROR_OK;
1921 }
1922 command_print( cmd_ctx, "OLD SYNTAX: DEPRECATED - translating to new syntax");
1923 command_print( cmd_ctx, "jtag newtap CHIP TAP -irlen %s -ircapture %s -irvalue %s",
1924 args[0],
1925 args[1],
1926 args[2] );
1927 command_print( cmd_ctx, "Example: STM32 has 2 taps, the cortexM3(len4) + boundaryscan(len5)");
1928 command_print( cmd_ctx, "jtag newtap stm32 cortexm3 ....., thus creating the tap: \"stm32.cortexm3\"");
1929 command_print( cmd_ctx, "jtag newtap stm32 boundary ....., and the tap: \"stm32.boundary\"");
1930 command_print( cmd_ctx, "And then refer to the taps by the dotted name.");
1931
1932 newargs[0] = Jim_NewStringObj( interp, "jtag", -1 );
1933 newargs[1] = Jim_NewStringObj( interp, "newtap", -1 );
1934 sprintf( buf, "chip%d", jtag_tap_count() );
1935 newargs[2] = Jim_NewStringObj( interp, buf, -1 );
1936 sprintf( buf, "tap%d", jtag_tap_count() );
1937 newargs[3] = Jim_NewStringObj( interp, buf, -1 );
1938 newargs[4] = Jim_NewStringObj( interp, "-irlen", -1 );
1939 newargs[5] = Jim_NewStringObj( interp, args[0], -1 );
1940 newargs[6] = Jim_NewStringObj( interp, "-ircapture", -1 );
1941 newargs[7] = Jim_NewStringObj( interp, args[1], -1 );
1942 newargs[8] = Jim_NewStringObj( interp, "-irmask", -1 );
1943 newargs[9] = Jim_NewStringObj( interp, args[2], -1 );
1944
1945 command_print( cmd_ctx, "NEW COMMAND:");
1946 sprintf( buf, "%s %s %s %s %s %s %s %s %s %s",
1947 Jim_GetString( newargs[0], NULL ),
1948 Jim_GetString( newargs[1], NULL ),
1949 Jim_GetString( newargs[2], NULL ),
1950 Jim_GetString( newargs[3], NULL ),
1951 Jim_GetString( newargs[4], NULL ),
1952 Jim_GetString( newargs[5], NULL ),
1953 Jim_GetString( newargs[6], NULL ),
1954 Jim_GetString( newargs[7], NULL ),
1955 Jim_GetString( newargs[8], NULL ),
1956 Jim_GetString( newargs[9], NULL ) );
1957
1958 e = jim_jtag_command( interp, 10, newargs );
1959 if( e != JIM_OK ){
1960 command_print( cmd_ctx, "%s", Jim_GetString( Jim_GetResult(interp), NULL ) );
1961 }
1962 return e;
1963 }
1964
1965 static int handle_scan_chain_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1966 {
1967 jtag_tap_t *tap;
1968
1969 tap = jtag_all_taps();
1970 command_print(cmd_ctx, " TapName | Enabled | IdCode Expected IrLen IrCap IrMask Instr ");
1971 command_print(cmd_ctx, "---|--------------------|---------|------------|------------|------|------|------|---------");
1972
1973 while( tap ){
1974 u32 expected, expected_mask, cur_instr, ii;
1975 expected = buf_get_u32(tap->expected, 0, tap->ir_length);
1976 expected_mask = buf_get_u32(tap->expected_mask, 0, tap->ir_length);
1977 cur_instr = buf_get_u32(tap->cur_instr, 0, tap->ir_length);
1978
1979 command_print(cmd_ctx,
1980 "%2d | %-18s | %c | 0x%08x | 0x%08x | 0x%02x | 0x%02x | 0x%02x | 0x%02x",
1981 tap->abs_chain_position,
1982 tap->dotted_name,
1983 tap->enabled ? 'Y' : 'n',
1984 tap->idcode,
1985 (tap->expected_ids_cnt > 0 ? tap->expected_ids[0] : 0),
1986 tap->ir_length,
1987 expected,
1988 expected_mask,
1989 cur_instr);
1990
1991 for (ii = 1; ii < tap->expected_ids_cnt; ii++) {
1992 command_print(cmd_ctx, " | | | | 0x%08x | | | | ",
1993 tap->expected_ids[ii]);
1994 }
1995
1996 tap = tap->next_tap;
1997 }
1998
1999 return ERROR_OK;
2000 }
2001
2002 static int handle_reset_config_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2003 {
2004 int new_cfg = 0;
2005 int mask = 0;
2006
2007 if (argc < 1)
2008 return ERROR_COMMAND_SYNTAX_ERROR;
2009
2010 /* Original versions cared about the order of these tokens:
2011 * reset_config signals [combination [trst_type [srst_type]]]
2012 * They also clobbered the previous configuration even on error.
2013 *
2014 * Here we don't care about the order, and only change values
2015 * which have been explicitly specified.
2016 */
2017 for (; argc; argc--, args++) {
2018 int tmp = 0;
2019 int m;
2020
2021 /* signals */
2022 m = RESET_HAS_TRST | RESET_HAS_SRST;
2023 if (strcmp(*args, "none") == 0)
2024 tmp = RESET_NONE;
2025 else if (strcmp(*args, "trst_only") == 0)
2026 tmp = RESET_HAS_TRST;
2027 else if (strcmp(*args, "srst_only") == 0)
2028 tmp = RESET_HAS_SRST;
2029 else if (strcmp(*args, "trst_and_srst") == 0)
2030 tmp = RESET_HAS_TRST | RESET_HAS_SRST;
2031 else
2032 m = 0;
2033 if (mask & m) {
2034 LOG_ERROR("extra reset_config %s spec (%s)",
2035 "signal", *args);
2036 return ERROR_INVALID_ARGUMENTS;
2037 }
2038 if (m)
2039 goto next;
2040
2041 /* combination (options for broken wiring) */
2042 m = RESET_SRST_PULLS_TRST | RESET_TRST_PULLS_SRST;
2043 if (strcmp(*args, "separate") == 0)
2044 /* separate reset lines - default */;
2045 else if (strcmp(*args, "srst_pulls_trst") == 0)
2046 tmp |= RESET_SRST_PULLS_TRST;
2047 else if (strcmp(*args, "trst_pulls_srst") == 0)
2048 tmp |= RESET_TRST_PULLS_SRST;
2049 else if (strcmp(*args, "combined") == 0)
2050 tmp |= RESET_SRST_PULLS_TRST | RESET_TRST_PULLS_SRST;
2051 else
2052 m = 0;
2053 if (mask & m) {
2054 LOG_ERROR("extra reset_config %s spec (%s)",
2055 "combination", *args);
2056 return ERROR_INVALID_ARGUMENTS;
2057 }
2058 if (m)
2059 goto next;
2060
2061 /* trst_type (NOP without HAS_TRST) */
2062 m = RESET_TRST_OPEN_DRAIN;
2063 if (strcmp(*args, "trst_open_drain") == 0)
2064 tmp |= RESET_TRST_OPEN_DRAIN;
2065 else if (strcmp(*args, "trst_push_pull") == 0)
2066 /* push/pull from adapter - default */;
2067 else
2068 m = 0;
2069 if (mask & m) {
2070 LOG_ERROR("extra reset_config %s spec (%s)",
2071 "trst_type", *args);
2072 return ERROR_INVALID_ARGUMENTS;
2073 }
2074 if (m)
2075 goto next;
2076
2077 /* srst_type (NOP without HAS_SRST) */
2078 m |= RESET_SRST_PUSH_PULL;
2079 if (strcmp(*args, "srst_push_pull") == 0)
2080 tmp |= RESET_SRST_PUSH_PULL;
2081 else if (strcmp(*args, "srst_open_drain") == 0)
2082 /* open drain from adapter - default */;
2083 else
2084 m = 0;
2085 if (mask & m) {
2086 LOG_ERROR("extra reset_config %s spec (%s)",
2087 "srst_type", *args);
2088 return ERROR_INVALID_ARGUMENTS;
2089 }
2090 if (m)
2091 goto next;
2092
2093 /* caller provided nonsense; fail */
2094 LOG_ERROR("unknown reset_config flag (%s)", *args);
2095 return ERROR_INVALID_ARGUMENTS;
2096
2097 next:
2098 /* Remember the bits which were specified (mask)
2099 * and their new values (new_cfg).
2100 */
2101 mask |= m;
2102 new_cfg |= tmp;
2103 }
2104
2105 /* clear previous values of those bits, save new values */
2106 jtag_reset_config &= ~mask;
2107 jtag_reset_config |= new_cfg;
2108
2109 return ERROR_OK;
2110 }
2111
2112 static int handle_jtag_nsrst_delay_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2113 {
2114 if (argc < 1)
2115 {
2116 LOG_ERROR("jtag_nsrst_delay <ms> command takes one required argument");
2117 exit(-1);
2118 }
2119 else
2120 {
2121 jtag_set_nsrst_delay(strtoul(args[0], NULL, 0));
2122 }
2123
2124 return ERROR_OK;
2125 }
2126
2127 static int handle_jtag_ntrst_delay_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2128 {
2129 if (argc < 1)
2130 {
2131 LOG_ERROR("jtag_ntrst_delay <ms> command takes one required argument");
2132 exit(-1);
2133 }
2134 else
2135 {
2136 jtag_set_ntrst_delay(strtoul(args[0], NULL, 0));
2137 }
2138
2139 return ERROR_OK;
2140 }
2141
2142 static int handle_jtag_speed_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2143 {
2144 int retval=ERROR_OK;
2145
2146 if (argc == 1)
2147 {
2148 LOG_DEBUG("handle jtag speed");
2149
2150 int cur_speed = 0;
2151 cur_speed = jtag_speed = strtoul(args[0], NULL, 0);
2152
2153 /* this command can be called during CONFIG,
2154 * in which case jtag isn't initialized */
2155 if (jtag)
2156 {
2157 retval=jtag->speed(cur_speed);
2158 }
2159 } else if (argc == 0)
2160 {
2161 } else
2162 {
2163 return ERROR_COMMAND_SYNTAX_ERROR;
2164 }
2165 command_print(cmd_ctx, "jtag_speed: %d", jtag_speed);
2166
2167 return retval;
2168 }
2169
2170 static int handle_jtag_khz_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2171 {
2172 int retval=ERROR_OK;
2173 LOG_DEBUG("handle jtag khz");
2174
2175 int cur_speed = 0;
2176 if(argc == 1)
2177 {
2178 jtag_set_speed_khz(strtoul(args[0], NULL, 0));
2179 if (jtag != NULL)
2180 {
2181 LOG_DEBUG("have interface set up");
2182 int speed_div1;
2183 if ((retval=jtag->khz(jtag_get_speed_khz(), &speed_div1))!=ERROR_OK)
2184 {
2185 jtag_set_speed_khz(0);
2186 return retval;
2187 }
2188
2189 cur_speed = jtag_speed = speed_div1;
2190
2191 retval=jtag->speed(cur_speed);
2192 } else
2193 {
2194 hasKHz = true;
2195 }
2196 } else if (argc==0)
2197 {
2198 } else
2199 {
2200 return ERROR_COMMAND_SYNTAX_ERROR;
2201 }
2202 cur_speed = jtag_get_speed_khz();
2203
2204 if (jtag!=NULL)
2205 {
2206 if ((retval=jtag->speed_div(jtag_speed, &cur_speed))!=ERROR_OK)
2207 return retval;
2208 }
2209
2210 if (cur_speed)
2211 command_print(cmd_ctx, "%d kHz", cur_speed);
2212 else
2213 command_print(cmd_ctx, "RCLK - adaptive");
2214 return retval;
2215
2216 }
2217
2218 static int handle_endstate_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2219 {
2220 if (argc < 1)
2221 return ERROR_COMMAND_SYNTAX_ERROR;
2222
2223 tap_state_t state = tap_state_by_name(args[0]);
2224 if (state < 0)
2225 {
2226 command_print( cmd_ctx, "Invalid state name: %s\n", args[0] );
2227 return ERROR_COMMAND_SYNTAX_ERROR;
2228 }
2229 jtag_set_end_state(state);
2230 jtag_execute_queue();
2231
2232 command_print(cmd_ctx, "current endstate: %s",
2233 tap_state_name(cmd_queue_end_state));
2234
2235 return ERROR_OK;
2236 }
2237
2238 static int handle_jtag_reset_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2239 {
2240 int trst = -1;
2241 int srst = -1;
2242
2243 if (argc < 2)
2244 {
2245 return ERROR_COMMAND_SYNTAX_ERROR;
2246 }
2247
2248 if (args[0][0] == '1')
2249 trst = 1;
2250 else if (args[0][0] == '0')
2251 trst = 0;
2252 else
2253 {
2254 return ERROR_COMMAND_SYNTAX_ERROR;
2255 }
2256
2257 if (args[1][0] == '1')
2258 srst = 1;
2259 else if (args[1][0] == '0')
2260 srst = 0;
2261 else
2262 {
2263 return ERROR_COMMAND_SYNTAX_ERROR;
2264 }
2265
2266 if (jtag_interface_init(cmd_ctx) != ERROR_OK)
2267 return ERROR_JTAG_INIT_FAILED;
2268
2269 jtag_add_reset(trst, srst);
2270 jtag_execute_queue();
2271
2272 return ERROR_OK;
2273 }
2274
2275 static int handle_runtest_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2276 {
2277 if (argc < 1)
2278 {
2279 return ERROR_COMMAND_SYNTAX_ERROR;
2280 }
2281
2282 jtag_add_runtest(strtol(args[0], NULL, 0), jtag_get_end_state());
2283 jtag_execute_queue();
2284
2285 return ERROR_OK;
2286
2287 }
2288
2289 /*
2290 * For "irscan" or "drscan" commands, the "end" (really, "next") state
2291 * should be stable ... and *NOT* a shift state, otherwise free-running
2292 * jtag clocks could change the values latched by the update state.
2293 */
2294 static bool scan_is_safe(tap_state_t state)
2295 {
2296 switch (state)
2297 {
2298 case TAP_RESET:
2299 case TAP_IDLE:
2300 case TAP_DRPAUSE:
2301 case TAP_IRPAUSE:
2302 return true;
2303 default:
2304 return false;
2305 }
2306 }
2307
2308
2309 static int handle_irscan_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2310 {
2311 int i;
2312 scan_field_t *fields;
2313 jtag_tap_t *tap;
2314 tap_state_t endstate;
2315
2316 if ((argc < 2) || (argc % 2))
2317 {
2318 return ERROR_COMMAND_SYNTAX_ERROR;
2319 }
2320
2321 /* optional "-endstate" "statename" at the end of the arguments,
2322 * so that e.g. IRPAUSE can let us load the data register before
2323 * entering RUN/IDLE to execute the instruction we load here.
2324 */
2325 endstate = TAP_IDLE;
2326
2327 if( argc >= 4 ){
2328 /* have at least one pair of numbers. */
2329 /* is last pair the magic text? */
2330 if( 0 == strcmp( "-endstate", args[ argc - 2 ] ) ){
2331 const char *cpA;
2332 const char *cpS;
2333 cpA = args[ argc-1 ];
2334 for( endstate = 0 ; endstate < TAP_NUM_STATES ; endstate++ ){
2335 cpS = tap_state_name( endstate );
2336 if( 0 == strcmp( cpA, cpS ) ){
2337 break;
2338 }
2339 }
2340 if( endstate >= TAP_NUM_STATES ){
2341 return ERROR_COMMAND_SYNTAX_ERROR;
2342 } else {
2343 if (!scan_is_safe(endstate))
2344 LOG_WARNING("irscan with unsafe "
2345 "endstate \"%s\"", cpA);
2346 /* found - remove the last 2 args */
2347 argc -= 2;
2348 }
2349 }
2350 }
2351
2352 int num_fields = argc / 2;
2353
2354 fields = malloc(sizeof(scan_field_t) * num_fields);
2355
2356 for (i = 0; i < num_fields; i++)
2357 {
2358 tap = jtag_tap_by_string( args[i*2] );
2359 if (tap==NULL)
2360 {
2361 command_print( cmd_ctx, "Tap: %s unknown", args[i*2] );
2362 return ERROR_FAIL;
2363 }
2364 int field_size = tap->ir_length;
2365 fields[i].tap = tap;
2366 fields[i].num_bits = field_size;
2367 fields[i].out_value = malloc(CEIL(field_size, 8));
2368 buf_set_u32(fields[i].out_value, 0, field_size, strtoul(args[i*2+1], NULL, 0));
2369 fields[i].in_value = NULL;
2370 }
2371
2372 /* did we have an endstate? */
2373 jtag_add_ir_scan(num_fields, fields, endstate);
2374
2375 int retval=jtag_execute_queue();
2376
2377 for (i = 0; i < num_fields; i++)
2378 free(fields[i].out_value);
2379
2380 free (fields);
2381
2382 return retval;
2383 }
2384
2385 static int Jim_Command_drscan(Jim_Interp *interp, int argc, Jim_Obj *const *args)
2386 {
2387 int retval;
2388 scan_field_t *fields;
2389 int num_fields;
2390 int field_count = 0;
2391 int i, e;
2392 jtag_tap_t *tap;
2393 tap_state_t endstate;
2394
2395 /* args[1] = device
2396 * args[2] = num_bits
2397 * args[3] = hex string
2398 * ... repeat num bits and hex string ...
2399 *
2400 * .. optionally:
2401 * args[N-2] = "-endstate"
2402 * args[N-1] = statename
2403 */
2404 if ((argc < 4) || ((argc % 2)!=0))
2405 {
2406 Jim_WrongNumArgs(interp, 1, args, "wrong arguments");
2407 return JIM_ERR;
2408 }
2409
2410 endstate = TAP_IDLE;
2411
2412 /* validate arguments as numbers */
2413 e = JIM_OK;
2414 for (i = 2; i < argc; i+=2)
2415 {
2416 long bits;
2417 const char *cp;
2418
2419 e = Jim_GetLong(interp, args[i], &bits);
2420 /* If valid - try next arg */
2421 if( e == JIM_OK ){
2422 continue;
2423 }
2424
2425 /* Not valid.. are we at the end? */
2426 if ( ((i+2) != argc) ){
2427 /* nope, then error */
2428 return e;
2429 }
2430
2431 /* it could be: "-endstate FOO"
2432 * e.g. DRPAUSE so we can issue more instructions
2433 * before entering RUN/IDLE and executing them.
2434 */
2435
2436 /* get arg as a string. */
2437 cp = Jim_GetString( args[i], NULL );
2438 /* is it the magic? */
2439 if( 0 == strcmp( "-endstate", cp ) ){
2440 /* is the statename valid? */
2441 cp = Jim_GetString( args[i+1], NULL );
2442
2443 /* see if it is a valid state name */
2444 endstate = tap_state_by_name(cp);
2445 if( endstate < 0 ){
2446 /* update the error message */
2447 Jim_SetResult_sprintf(interp,"endstate: %s invalid", cp );
2448 } else {
2449 if (!scan_is_safe(endstate))
2450 LOG_WARNING("drscan with unsafe "
2451 "endstate \"%s\"", cp);
2452
2453 /* valid - so clear the error */
2454 e = JIM_OK;
2455 /* and remove the last 2 args */
2456 argc -= 2;
2457 }
2458 }
2459
2460 /* Still an error? */
2461 if( e != JIM_OK ){
2462 return e; /* too bad */
2463 }
2464 } /* validate args */
2465
2466 tap = jtag_tap_by_jim_obj( interp, args[1] );
2467 if( tap == NULL ){
2468 return JIM_ERR;
2469 }
2470
2471 num_fields=(argc-2)/2;
2472 fields = malloc(sizeof(scan_field_t) * num_fields);
2473 for (i = 2; i < argc; i+=2)
2474 {
2475 long bits;
2476 int len;
2477 const char *str;
2478
2479 Jim_GetLong(interp, args[i], &bits);
2480 str = Jim_GetString(args[i+1], &len);
2481
2482 fields[field_count].tap = tap;
2483 fields[field_count].num_bits = bits;
2484 fields[field_count].out_value = malloc(CEIL(bits, 8));
2485 str_to_buf(str, len, fields[field_count].out_value, bits, 0);
2486 fields[field_count].in_value = fields[field_count].out_value;
2487 field_count++;
2488 }
2489
2490 jtag_add_dr_scan(num_fields, fields, endstate);
2491
2492 retval = jtag_execute_queue();
2493 if (retval != ERROR_OK)
2494 {
2495 Jim_SetResultString(interp, "drscan: jtag execute failed",-1);
2496 return JIM_ERR;
2497 }
2498
2499 field_count=0;
2500 Jim_Obj *list = Jim_NewListObj(interp, NULL, 0);
2501 for (i = 2; i < argc; i+=2)
2502 {
2503 long bits;
2504 char *str;
2505
2506 Jim_GetLong(interp, args[i], &bits);
2507 str = buf_to_str(fields[field_count].in_value, bits, 16);
2508 free(fields[field_count].out_value);
2509
2510 Jim_ListAppendElement(interp, list, Jim_NewStringObj(interp, str, strlen(str)));
2511 free(str);
2512 field_count++;
2513 }
2514
2515 Jim_SetResult(interp, list);
2516
2517 free(fields);
2518
2519 return JIM_OK;
2520 }
2521
2522
2523 static int Jim_Command_flush_count(Jim_Interp *interp, int argc, Jim_Obj *const *args)
2524 {
2525 Jim_SetResult(interp, Jim_NewIntObj(interp, jtag_get_flush_queue_count()));
2526
2527 return JIM_OK;
2528 }
2529
2530
2531 static int handle_verify_ircapture_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2532 {
2533 if (argc == 1)
2534 {
2535 if (strcmp(args[0], "enable") == 0)
2536 {
2537 jtag_verify_capture_ir = 1;
2538 }
2539 else if (strcmp(args[0], "disable") == 0)
2540 {
2541 jtag_verify_capture_ir = 0;
2542 } else
2543 {
2544 return ERROR_COMMAND_SYNTAX_ERROR;
2545 }
2546 } else if (argc != 0)
2547 {
2548 return ERROR_COMMAND_SYNTAX_ERROR;
2549 }
2550
2551 command_print(cmd_ctx, "verify Capture-IR is %s", (jtag_verify_capture_ir) ? "enabled": "disabled");
2552
2553 return ERROR_OK;
2554 }
2555
2556 void jtag_set_verify(bool enable)
2557 {
2558 jtag_verify = enable;
2559 }
2560
2561 bool jtag_will_verify()
2562 {
2563 return jtag_verify;
2564 }
2565
2566 static int handle_verify_jtag_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2567 {
2568 if (argc > 1)
2569 return ERROR_COMMAND_SYNTAX_ERROR;
2570
2571 if (argc == 1)
2572 {
2573 if (strcmp(args[0], "enable") == 0)
2574 jtag_set_verify(true);
2575 else if (strcmp(args[0], "disable") == 0)
2576 jtag_set_verify(false);
2577 else
2578 return ERROR_COMMAND_SYNTAX_ERROR;
2579 }
2580
2581 const char *status = jtag_will_verify() ? "enabled": "disabled";
2582 command_print(cmd_ctx, "verify jtag capture is %s", status);
2583
2584 return ERROR_OK;
2585 }
2586
2587
2588 int jtag_power_dropout(int *dropout)
2589 {
2590 return jtag->power_dropout(dropout);
2591 }
2592
2593 int jtag_srst_asserted(int *srst_asserted)
2594 {
2595 return jtag->srst_asserted(srst_asserted);
2596 }
2597
2598 void jtag_tap_handle_event( jtag_tap_t * tap, enum jtag_tap_event e)
2599 {
2600 jtag_tap_event_action_t * jteap;
2601 int done;
2602
2603 jteap = tap->event_action;
2604
2605 done = 0;
2606 while (jteap) {
2607 if (jteap->event == e) {
2608 done = 1;
2609 LOG_DEBUG( "JTAG tap: %s event: %d (%s) action: %s\n",
2610 tap->dotted_name,
2611 e,
2612 Jim_Nvp_value2name_simple(nvp_jtag_tap_event, e)->name,
2613 Jim_GetString(jteap->body, NULL) );
2614 if (Jim_EvalObj(interp, jteap->body) != JIM_OK) {
2615 Jim_PrintErrorMessage(interp);
2616 }
2617 }
2618
2619 jteap = jteap->next;
2620 }
2621
2622 if (!done) {
2623 LOG_DEBUG( "event %d %s - no action",
2624 e,
2625 Jim_Nvp_value2name_simple( nvp_jtag_tap_event, e)->name);
2626 }
2627 }
2628
2629 static int handle_tms_sequence_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2630 {
2631 if (argc > 1)
2632 return ERROR_COMMAND_SYNTAX_ERROR;
2633
2634 if (argc == 1)
2635 {
2636 bool use_new_table;
2637 if (strcmp(args[0], "short") == 0)
2638 use_new_table = true;
2639 else if (strcmp(args[0], "long") == 0)
2640 use_new_table = false;
2641 else
2642 return ERROR_COMMAND_SYNTAX_ERROR;
2643
2644 tap_use_new_tms_table(use_new_table);
2645 }
2646
2647 command_print(cmd_ctx, "tms sequence is %s",
2648 tap_uses_new_tms_table() ? "short": "long");
2649
2650 return ERROR_OK;
2651 }
2652
2653 /**
2654 * Function jtag_add_statemove
2655 * moves from the current state to the goal \a state. This needs
2656 * to be handled according to the xsvf spec, see the XSTATE command
2657 * description.
2658 */
2659 int jtag_add_statemove(tap_state_t goal_state)
2660 {
2661 int retval = ERROR_OK;
2662
2663 tap_state_t moves[8];
2664 tap_state_t cur_state = cmd_queue_cur_state;
2665 int i;
2666 int tms_bits;
2667 int tms_count;
2668
2669 LOG_DEBUG( "cur_state=%s goal_state=%s",
2670 tap_state_name(cur_state),
2671 tap_state_name(goal_state) );
2672
2673
2674 /* From the XSVF spec, pertaining to XSTATE:
2675
2676 For special states known as stable states (Test-Logic-Reset,
2677 Run-Test/Idle, Pause-DR, Pause- IR), an XSVF interpreter follows
2678 predefined TAP state paths when the starting state is a stable state and
2679 when the XSTATE specifies a new stable state (see the STATE command in
2680 the [Ref 5] for the TAP state paths between stable states). For
2681 non-stable states, XSTATE should specify a state that is only one TAP
2682 state transition distance from the current TAP state to avoid undefined
2683 TAP state paths. A sequence of multiple XSTATE commands can be issued to
2684 transition the TAP through a specific state path.
2685 */
2686
2687 if (goal_state==cur_state )
2688 ; /* nothing to do */
2689
2690 else if( goal_state==TAP_RESET )
2691 {
2692 jtag_add_tlr();
2693 }
2694
2695 else if( tap_is_state_stable(cur_state) && tap_is_state_stable(goal_state) )
2696 {
2697 /* note: unless tms_bits holds a path that agrees with [Ref 5] in above
2698 spec, then this code is not fully conformant to the xsvf spec. This
2699 puts a burden on tap_get_tms_path() function from the xsvf spec.
2700 If in doubt, you should confirm that that burden is being met.
2701 */
2702
2703 tms_bits = tap_get_tms_path(cur_state, goal_state);
2704 tms_count = tap_get_tms_path_len(cur_state, goal_state);
2705
2706 assert( (unsigned) tms_count < DIM(moves) );
2707
2708 for (i=0; i<tms_count; i++, tms_bits>>=1)
2709 {
2710 bool bit = tms_bits & 1;
2711
2712 cur_state = tap_state_transition(cur_state, bit);
2713 moves[i] = cur_state;
2714 }
2715
2716 jtag_add_pathmove(tms_count, moves);
2717 }
2718
2719 /* else state must be immediately reachable in one clock cycle, and does not
2720 need to be a stable state.
2721 */
2722 else if( tap_state_transition(cur_state, true) == goal_state
2723 || tap_state_transition(cur_state, false) == goal_state )
2724 {
2725 /* move a single state */
2726 moves[0] = goal_state;
2727 jtag_add_pathmove( 1, moves );
2728 }
2729
2730 else
2731 {
2732 retval = ERROR_FAIL;
2733 }
2734
2735 return retval;
2736 }
2737
2738 void jtag_set_nsrst_delay(unsigned delay)
2739 {
2740 jtag_nsrst_delay = delay;
2741 }
2742 void jtag_set_ntrst_delay(unsigned delay)
2743 {
2744 jtag_ntrst_delay = delay;
2745 }
2746
2747
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