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Add accessors for speed_khz; use them in jim command handler.
[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 /* maximum number of JTAG devices expected in the chain
88 */
89 #define JTAG_MAX_CHAIN_SIZE 20
90
91 /* callbacks to inform high-level handlers about JTAG state changes */
92 jtag_event_callback_t *jtag_event_callbacks;
93
94 /* speed in kHz*/
95 static int speed_khz = 0;
96 /* flag if the kHz speed was defined */
97 static bool hasKHz = false;
98
99 /* jtag interfaces (parport, FTDI-USB, TI-USB, ...)
100 */
101
102 #if BUILD_ECOSBOARD == 1
103 extern jtag_interface_t zy1000_interface;
104 #endif
105
106 #if BUILD_PARPORT == 1
107 extern jtag_interface_t parport_interface;
108 #endif
109
110 #if BUILD_DUMMY == 1
111 extern jtag_interface_t dummy_interface;
112 #endif
113
114 #if BUILD_FT2232_FTD2XX == 1
115 extern jtag_interface_t ft2232_interface;
116 #endif
117
118 #if BUILD_FT2232_LIBFTDI == 1
119 extern jtag_interface_t ft2232_interface;
120 #endif
121
122 #if BUILD_AMTJTAGACCEL == 1
123 extern jtag_interface_t amt_jtagaccel_interface;
124 #endif
125
126 #if BUILD_EP93XX == 1
127 extern jtag_interface_t ep93xx_interface;
128 #endif
129
130 #if BUILD_AT91RM9200 == 1
131 extern jtag_interface_t at91rm9200_interface;
132 #endif
133
134 #if BUILD_GW16012 == 1
135 extern jtag_interface_t gw16012_interface;
136 #endif
137
138 #if BUILD_PRESTO_LIBFTDI == 1 || BUILD_PRESTO_FTD2XX == 1
139 extern jtag_interface_t presto_interface;
140 #endif
141
142 #if BUILD_USBPROG == 1
143 extern jtag_interface_t usbprog_interface;
144 #endif
145
146 #if BUILD_JLINK == 1
147 extern jtag_interface_t jlink_interface;
148 #endif
149
150 #if BUILD_VSLLINK == 1
151 extern jtag_interface_t vsllink_interface;
152 #endif
153
154 #if BUILD_RLINK == 1
155 extern jtag_interface_t rlink_interface;
156 #endif
157
158 #if BUILD_ARMJTAGEW == 1
159 extern jtag_interface_t armjtagew_interface;
160 #endif
161
162 jtag_interface_t *jtag_interfaces[] = {
163 #if BUILD_ECOSBOARD == 1
164 &zy1000_interface,
165 #endif
166 #if BUILD_PARPORT == 1
167 &parport_interface,
168 #endif
169 #if BUILD_DUMMY == 1
170 &dummy_interface,
171 #endif
172 #if BUILD_FT2232_FTD2XX == 1
173 &ft2232_interface,
174 #endif
175 #if BUILD_FT2232_LIBFTDI == 1
176 &ft2232_interface,
177 #endif
178 #if BUILD_AMTJTAGACCEL == 1
179 &amt_jtagaccel_interface,
180 #endif
181 #if BUILD_EP93XX == 1
182 &ep93xx_interface,
183 #endif
184 #if BUILD_AT91RM9200 == 1
185 &at91rm9200_interface,
186 #endif
187 #if BUILD_GW16012 == 1
188 &gw16012_interface,
189 #endif
190 #if BUILD_PRESTO_LIBFTDI == 1 || BUILD_PRESTO_FTD2XX == 1
191 &presto_interface,
192 #endif
193 #if BUILD_USBPROG == 1
194 &usbprog_interface,
195 #endif
196 #if BUILD_JLINK == 1
197 &jlink_interface,
198 #endif
199 #if BUILD_VSLLINK == 1
200 &vsllink_interface,
201 #endif
202 #if BUILD_RLINK == 1
203 &rlink_interface,
204 #endif
205 #if BUILD_ARMJTAGEW == 1
206 &armjtagew_interface,
207 #endif
208 NULL,
209 };
210
211 struct jtag_interface_s *jtag = NULL;
212
213 /* configuration */
214 static jtag_interface_t *jtag_interface = NULL;
215 int jtag_speed = 0;
216
217 /* jtag commands */
218 static int handle_interface_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
219 static int handle_jtag_speed_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
220 static int handle_jtag_khz_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
221 static int handle_jtag_device_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
222 static int handle_reset_config_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
223 static int handle_jtag_nsrst_delay_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
224 static int handle_jtag_ntrst_delay_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
225
226 static int handle_scan_chain_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
227
228 static int handle_endstate_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
229 static int handle_jtag_reset_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
230 static int handle_runtest_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
231 static int handle_irscan_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
232 static int Jim_Command_drscan(Jim_Interp *interp, int argc, Jim_Obj *const *argv);
233 static int Jim_Command_flush_count(Jim_Interp *interp, int argc, Jim_Obj *const *args);
234
235 static int handle_verify_ircapture_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
236 static int handle_verify_jtag_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
237 static int handle_tms_sequence_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
238
239 jtag_tap_t *jtag_AllTaps(void)
240 {
241 return jtag_all_taps;
242 };
243
244 int jtag_NumTotalTaps(void)
245 {
246 return jtag_num_taps;
247 }
248
249 int jtag_NumEnabledTaps(void)
250 {
251 jtag_tap_t *t;
252 int n;
253
254 n = 0;
255 t = jtag_AllTaps();
256 while(t){
257 if( t->enabled ){
258 n++;
259 }
260 t = t->next_tap;
261 }
262 return n;
263 }
264
265 /// Append a new TAP to the chain of all taps.
266 static void jtag_tap_add(struct jtag_tap_s *t)
267 {
268 t->abs_chain_position = jtag_num_taps++;
269
270 jtag_tap_t **tap = &jtag_all_taps;
271 while(*tap != NULL)
272 tap = &(*tap)->next_tap;
273 *tap = t;
274 }
275
276 jtag_tap_t *jtag_TapByString( const char *s )
277 {
278 jtag_tap_t *t;
279 char *cp;
280
281 t = jtag_AllTaps();
282 /* try name first */
283 while(t){
284 if( 0 == strcmp( t->dotted_name, s ) ){
285 break;
286 } else {
287 t = t->next_tap;
288 }
289 }
290 /* backup plan is by number */
291 if( t == NULL ){
292 /* ok - is "s" a number? */
293 int n;
294 n = strtol( s, &cp, 0 );
295 if( (s != cp) && (*cp == 0) ){
296 /* Then it is... */
297 t = jtag_TapByAbsPosition(n);
298 }
299 }
300 return t;
301 }
302
303 jtag_tap_t * jtag_TapByJimObj( Jim_Interp *interp, Jim_Obj *o )
304 {
305 jtag_tap_t *t;
306 const char *cp;
307
308 cp = Jim_GetString( o, NULL );
309 if(cp == NULL){
310 cp = "(unknown)";
311 t = NULL;
312 } else {
313 t = jtag_TapByString( cp );
314 }
315 if( t == NULL ){
316 Jim_SetResult_sprintf(interp,"Tap: %s is unknown", cp );
317 }
318 return t;
319 }
320
321 /* returns a pointer to the n-th device in the scan chain */
322 jtag_tap_t * jtag_TapByAbsPosition( int n )
323 {
324 int orig_n;
325 jtag_tap_t *t;
326
327 orig_n = n;
328 t = jtag_AllTaps();
329
330 while( t && (n > 0)) {
331 n--;
332 t = t->next_tap;
333 }
334 return t;
335 }
336
337 const char *jtag_tap_name(const jtag_tap_t *tap)
338 {
339 return (tap == NULL) ? "(unknown)" : tap->dotted_name;
340 }
341
342
343 int jtag_register_event_callback(int (*callback)(enum jtag_event event, void *priv), void *priv)
344 {
345 jtag_event_callback_t **callbacks_p = &jtag_event_callbacks;
346
347 if (callback == NULL)
348 {
349 return ERROR_INVALID_ARGUMENTS;
350 }
351
352 if (*callbacks_p)
353 {
354 while ((*callbacks_p)->next)
355 callbacks_p = &((*callbacks_p)->next);
356 callbacks_p = &((*callbacks_p)->next);
357 }
358
359 (*callbacks_p) = malloc(sizeof(jtag_event_callback_t));
360 (*callbacks_p)->callback = callback;
361 (*callbacks_p)->priv = priv;
362 (*callbacks_p)->next = NULL;
363
364 return ERROR_OK;
365 }
366
367 int jtag_unregister_event_callback(int (*callback)(enum jtag_event event, void *priv))
368 {
369 jtag_event_callback_t **callbacks_p = &jtag_event_callbacks;
370
371 if (callback == NULL)
372 {
373 return ERROR_INVALID_ARGUMENTS;
374 }
375
376 while (*callbacks_p)
377 {
378 jtag_event_callback_t **next = &((*callbacks_p)->next);
379 if ((*callbacks_p)->callback == callback)
380 {
381 free(*callbacks_p);
382 *callbacks_p = *next;
383 }
384 callbacks_p = next;
385 }
386
387 return ERROR_OK;
388 }
389
390 int jtag_call_event_callbacks(enum jtag_event event)
391 {
392 jtag_event_callback_t *callback = jtag_event_callbacks;
393
394 LOG_DEBUG("jtag event: %s", jtag_event_strings[event]);
395
396 while (callback)
397 {
398 callback->callback(event, callback->priv);
399 callback = callback->next;
400 }
401
402 return ERROR_OK;
403 }
404
405 static void jtag_checks(void)
406 {
407 assert(jtag_trst == 0);
408 }
409
410 static void jtag_prelude(tap_state_t state)
411 {
412 jtag_checks();
413
414 assert(state!=TAP_INVALID);
415
416 cmd_queue_cur_state = state;
417 }
418
419 void jtag_alloc_in_value32(scan_field_t *field)
420 {
421 interface_jtag_alloc_in_value32(field);
422 }
423
424 void jtag_add_ir_scan_noverify(int in_num_fields, const scan_field_t *in_fields, tap_state_t state)
425 {
426 int retval;
427 jtag_prelude(state);
428
429 retval=interface_jtag_add_ir_scan(in_num_fields, in_fields, state);
430 if (retval!=ERROR_OK)
431 jtag_error=retval;
432
433 }
434
435
436 /**
437 * Generate an IR SCAN with a list of scan fields with one entry for each enabled TAP.
438 *
439 * If the input field list contains an instruction value for a TAP then that is used
440 * otherwise the TAP is set to bypass.
441 *
442 * TAPs for which no fields are passed are marked as bypassed for subsequent DR SCANs.
443 *
444 */
445 void jtag_add_ir_scan(int in_num_fields, scan_field_t *in_fields, tap_state_t state)
446 {
447 if (jtag_verify&&jtag_verify_capture_ir)
448 {
449 /* 8 x 32 bit id's is enough for all invocations */
450
451 for (int j = 0; j < in_num_fields; j++)
452 {
453 /* if we are to run a verification of the ir scan, we need to get the input back.
454 * We may have to allocate space if the caller didn't ask for the input back.
455 */
456 in_fields[j].check_value=in_fields[j].tap->expected;
457 in_fields[j].check_mask=in_fields[j].tap->expected_mask;
458 }
459 jtag_add_scan_check(jtag_add_ir_scan_noverify, in_num_fields, in_fields, state);
460 } else
461 {
462 jtag_add_ir_scan_noverify(in_num_fields, in_fields, state);
463 }
464 }
465
466 /**
467 * Duplicate the scan fields passed into the function into an IR SCAN command
468 *
469 * This function assumes that the caller handles extra fields for bypassed TAPs
470 *
471 */
472 void jtag_add_plain_ir_scan(int in_num_fields, const scan_field_t *in_fields, tap_state_t state)
473 {
474 int retval;
475
476 jtag_prelude(state);
477
478 retval=interface_jtag_add_plain_ir_scan(in_num_fields, in_fields, state);
479 if (retval!=ERROR_OK)
480 jtag_error=retval;
481 }
482
483 void jtag_add_callback(jtag_callback1_t f, u8 *in)
484 {
485 interface_jtag_add_callback(f, in);
486 }
487
488 void jtag_add_callback4(jtag_callback_t f, u8 *in,
489 jtag_callback_data_t data1, jtag_callback_data_t data2,
490 jtag_callback_data_t data3)
491 {
492 interface_jtag_add_callback4(f, in, data1, data2, data3);
493 }
494
495 int jtag_check_value_inner(u8 *captured, u8 *in_check_value, u8 *in_check_mask, int num_bits);
496
497 static int jtag_check_value_mask_callback(u8 *in, jtag_callback_data_t data1, jtag_callback_data_t data2, jtag_callback_data_t data3)
498 {
499 return jtag_check_value_inner(in, (u8 *)data1, (u8 *)data2, (int)data3);
500 }
501
502 static void jtag_add_scan_check(void (*jtag_add_scan)(int in_num_fields, const scan_field_t *in_fields, tap_state_t state),
503 int in_num_fields, scan_field_t *in_fields, tap_state_t state)
504 {
505 for (int i = 0; i < in_num_fields; i++)
506 {
507 struct scan_field_s *field = &in_fields[i];
508 field->allocated = 0;
509 field->modified = 0;
510 if (field->check_value || field->in_value)
511 continue;
512 interface_jtag_add_scan_check_alloc(field);
513 field->modified = 1;
514 }
515
516 jtag_add_scan(in_num_fields, in_fields, state);
517
518 for (int i = 0; i < in_num_fields; i++)
519 {
520 if ((in_fields[i].check_value != NULL) && (in_fields[i].in_value != NULL))
521 {
522 /* this is synchronous for a minidriver */
523 jtag_add_callback4(jtag_check_value_mask_callback, in_fields[i].in_value,
524 (jtag_callback_data_t)in_fields[i].check_value,
525 (jtag_callback_data_t)in_fields[i].check_mask,
526 (jtag_callback_data_t)in_fields[i].num_bits);
527 }
528 if (in_fields[i].allocated)
529 {
530 free(in_fields[i].in_value);
531 }
532 if (in_fields[i].modified)
533 {
534 in_fields[i].in_value = NULL;
535 }
536 }
537 }
538
539 void jtag_add_dr_scan_check(int in_num_fields, scan_field_t *in_fields, tap_state_t state)
540 {
541 if (jtag_verify)
542 {
543 jtag_add_scan_check(jtag_add_dr_scan, in_num_fields, in_fields, state);
544 } else
545 {
546 jtag_add_dr_scan(in_num_fields, in_fields, state);
547 }
548 }
549
550
551 /**
552 * Generate a DR SCAN using the fields passed to the function
553 *
554 * For not bypassed TAPs the function checks in_fields and uses fields specified there.
555 * For bypassed TAPs the function generates a dummy 1bit field.
556 *
557 * The bypass status of TAPs is set by jtag_add_ir_scan().
558 *
559 */
560 void jtag_add_dr_scan(int in_num_fields, const scan_field_t *in_fields, tap_state_t state)
561 {
562 int retval;
563
564 jtag_prelude(state);
565
566 retval=interface_jtag_add_dr_scan(in_num_fields, in_fields, state);
567 if (retval!=ERROR_OK)
568 jtag_error=retval;
569 }
570
571
572
573 /**
574 * Duplicate the scan fields passed into the function into a DR SCAN command
575 *
576 * This function assumes that the caller handles extra fields for bypassed TAPs
577 *
578 */
579 void jtag_add_plain_dr_scan(int in_num_fields, const scan_field_t *in_fields, tap_state_t state)
580 {
581 int retval;
582
583 jtag_prelude(state);
584
585 retval=interface_jtag_add_plain_dr_scan(in_num_fields, in_fields, state);
586 if (retval!=ERROR_OK)
587 jtag_error=retval;
588 }
589
590 void jtag_add_dr_out(jtag_tap_t* tap,
591 int num_fields, const int* num_bits, const u32* value,
592 tap_state_t end_state)
593 {
594 assert(end_state != TAP_INVALID);
595
596 cmd_queue_cur_state = end_state;
597
598 interface_jtag_add_dr_out(tap,
599 num_fields, num_bits, value,
600 end_state);
601 }
602
603 void jtag_add_tlr(void)
604 {
605 jtag_prelude(TAP_RESET);
606
607 int retval;
608 retval=interface_jtag_add_tlr();
609 if (retval!=ERROR_OK)
610 jtag_error=retval;
611
612 jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
613 }
614
615 void jtag_add_pathmove(int num_states, const tap_state_t *path)
616 {
617 tap_state_t cur_state = cmd_queue_cur_state;
618 int i;
619 int retval;
620
621 /* the last state has to be a stable state */
622 if (!tap_is_state_stable(path[num_states - 1]))
623 {
624 LOG_ERROR("BUG: TAP path doesn't finish in a stable state");
625 exit(-1);
626 }
627
628 for (i=0; i<num_states; i++)
629 {
630 if (path[i] == TAP_RESET)
631 {
632 LOG_ERROR("BUG: TAP_RESET is not a valid state for pathmove sequences");
633 exit(-1);
634 }
635
636 if ( tap_state_transition(cur_state, true) != path[i]
637 && tap_state_transition(cur_state, false) != path[i])
638 {
639 LOG_ERROR("BUG: %s -> %s isn't a valid TAP transition", tap_state_name(cur_state), tap_state_name(path[i]));
640 exit(-1);
641 }
642 cur_state = path[i];
643 }
644
645 jtag_checks();
646
647 retval = interface_jtag_add_pathmove(num_states, path);
648 cmd_queue_cur_state = path[num_states - 1];
649 if (retval!=ERROR_OK)
650 jtag_error=retval;
651 }
652
653 void jtag_add_runtest(int num_cycles, tap_state_t state)
654 {
655 int retval;
656
657 jtag_prelude(state);
658
659 /* executed by sw or hw fifo */
660 retval=interface_jtag_add_runtest(num_cycles, state);
661 if (retval!=ERROR_OK)
662 jtag_error=retval;
663 }
664
665
666 void jtag_add_clocks( int num_cycles )
667 {
668 int retval;
669
670 if( !tap_is_state_stable(cmd_queue_cur_state) )
671 {
672 LOG_ERROR( "jtag_add_clocks() was called with TAP in non-stable state \"%s\"",
673 tap_state_name(cmd_queue_cur_state) );
674 jtag_error = ERROR_JTAG_NOT_STABLE_STATE;
675 return;
676 }
677
678 if( num_cycles > 0 )
679 {
680 jtag_checks();
681
682 retval = interface_jtag_add_clocks(num_cycles);
683 if (retval != ERROR_OK)
684 jtag_error=retval;
685 }
686 }
687
688 void jtag_add_reset(int req_tlr_or_trst, int req_srst)
689 {
690 int trst_with_tlr = 0;
691 int retval;
692
693 /* FIX!!! there are *many* different cases here. A better
694 * approach is needed for legal combinations of transitions...
695 */
696 if ((jtag_reset_config & RESET_HAS_SRST)&&
697 (jtag_reset_config & RESET_HAS_TRST)&&
698 ((jtag_reset_config & RESET_SRST_PULLS_TRST)==0))
699 {
700 if (((req_tlr_or_trst&&!jtag_trst)||
701 (!req_tlr_or_trst&&jtag_trst))&&
702 ((req_srst&&!jtag_srst)||
703 (!req_srst&&jtag_srst)))
704 {
705 /* FIX!!! srst_pulls_trst allows 1,1 => 0,0 transition.... */
706 //LOG_ERROR("BUG: transition of req_tlr_or_trst and req_srst in the same jtag_add_reset() call is undefined");
707 }
708 }
709
710 /* Make sure that jtag_reset_config allows the requested reset */
711 /* if SRST pulls TRST, we can't fulfill srst == 1 with trst == 0 */
712 if (((jtag_reset_config & RESET_SRST_PULLS_TRST) && (req_srst == 1)) && (!req_tlr_or_trst))
713 {
714 LOG_ERROR("BUG: requested reset would assert trst");
715 jtag_error=ERROR_FAIL;
716 return;
717 }
718
719 /* if TRST pulls SRST, we reset with TAP T-L-R */
720 if (((jtag_reset_config & RESET_TRST_PULLS_SRST) && (req_tlr_or_trst)) && (req_srst == 0))
721 {
722 trst_with_tlr = 1;
723 }
724
725 if (req_srst && !(jtag_reset_config & RESET_HAS_SRST))
726 {
727 LOG_ERROR("BUG: requested SRST assertion, but the current configuration doesn't support this");
728 jtag_error=ERROR_FAIL;
729 return;
730 }
731
732 if (req_tlr_or_trst)
733 {
734 if (!trst_with_tlr && (jtag_reset_config & RESET_HAS_TRST))
735 {
736 jtag_trst = 1;
737 } else
738 {
739 trst_with_tlr = 1;
740 }
741 } else
742 {
743 jtag_trst = 0;
744 }
745
746 jtag_srst = req_srst;
747
748 retval = interface_jtag_add_reset(jtag_trst, jtag_srst);
749 if (retval!=ERROR_OK)
750 {
751 jtag_error=retval;
752 return;
753 }
754 jtag_execute_queue();
755
756 if (jtag_srst)
757 {
758 LOG_DEBUG("SRST line asserted");
759 }
760 else
761 {
762 LOG_DEBUG("SRST line released");
763 if (jtag_nsrst_delay)
764 jtag_add_sleep(jtag_nsrst_delay * 1000);
765 }
766
767 if (trst_with_tlr)
768 {
769 LOG_DEBUG("JTAG reset with RESET instead of TRST");
770 jtag_set_end_state(TAP_RESET);
771 jtag_add_tlr();
772 return;
773 }
774
775 if (jtag_trst)
776 {
777 /* we just asserted nTRST, so we're now in Test-Logic-Reset,
778 * and inform possible listeners about this
779 */
780 LOG_DEBUG("TRST line asserted");
781 tap_set_state(TAP_RESET);
782 jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
783 }
784 else
785 {
786 if (jtag_ntrst_delay)
787 jtag_add_sleep(jtag_ntrst_delay * 1000);
788 }
789 }
790
791 tap_state_t jtag_set_end_state(tap_state_t state)
792 {
793 if ((state == TAP_DRSHIFT)||(state == TAP_IRSHIFT))
794 {
795 LOG_ERROR("BUG: TAP_DRSHIFT/IRSHIFT can't be end state. Calling code should use a larger scan field");
796 }
797
798 if (state!=TAP_INVALID)
799 cmd_queue_end_state = state;
800 return cmd_queue_end_state;
801 }
802
803 tap_state_t jtag_get_end_state(void)
804 {
805 return cmd_queue_end_state;
806 }
807
808 void jtag_add_sleep(u32 us)
809 {
810 keep_alive(); /* we might be running on a very slow JTAG clk */
811 int retval=interface_jtag_add_sleep(us);
812 if (retval!=ERROR_OK)
813 jtag_error=retval;
814 return;
815 }
816
817 int jtag_check_value_inner(u8 *captured, u8 *in_check_value, u8 *in_check_mask, int num_bits)
818 {
819 int retval = ERROR_OK;
820
821 int compare_failed = 0;
822
823 if (in_check_mask)
824 compare_failed = buf_cmp_mask(captured, in_check_value, in_check_mask, num_bits);
825 else
826 compare_failed = buf_cmp(captured, in_check_value, num_bits);
827
828 if (compare_failed){
829 /* An error handler could have caught the failing check
830 * only report a problem when there wasn't a handler, or if the handler
831 * acknowledged the error
832 */
833 /*
834 LOG_WARNING("TAP %s:",
835 jtag_tap_name(field->tap));
836 */
837 if (compare_failed)
838 {
839 char *captured_char = buf_to_str(captured, (num_bits > DEBUG_JTAG_IOZ) ? DEBUG_JTAG_IOZ : num_bits, 16);
840 char *in_check_value_char = buf_to_str(in_check_value, (num_bits > DEBUG_JTAG_IOZ) ? DEBUG_JTAG_IOZ : num_bits, 16);
841
842 if (in_check_mask)
843 {
844 char *in_check_mask_char;
845 in_check_mask_char = buf_to_str(in_check_mask, (num_bits > DEBUG_JTAG_IOZ) ? DEBUG_JTAG_IOZ : num_bits, 16);
846 LOG_WARNING("value captured during scan didn't pass the requested check:");
847 LOG_WARNING("captured: 0x%s check_value: 0x%s check_mask: 0x%s",
848 captured_char, in_check_value_char, in_check_mask_char);
849 free(in_check_mask_char);
850 }
851 else
852 {
853 LOG_WARNING("value captured during scan didn't pass the requested check: captured: 0x%s check_value: 0x%s", captured_char, in_check_value_char);
854 }
855
856 free(captured_char);
857 free(in_check_value_char);
858
859 retval = ERROR_JTAG_QUEUE_FAILED;
860 }
861
862 }
863 return retval;
864 }
865
866 void jtag_check_value_mask(scan_field_t *field, u8 *value, u8 *mask)
867 {
868 assert(field->in_value != NULL);
869
870 if (value==NULL)
871 {
872 /* no checking to do */
873 return;
874 }
875
876 jtag_execute_queue_noclear();
877
878 int retval=jtag_check_value_inner(field->in_value, value, mask, field->num_bits);
879 jtag_set_error(retval);
880 }
881
882
883
884 int default_interface_jtag_execute_queue(void)
885 {
886 if (NULL == jtag)
887 {
888 LOG_ERROR("No JTAG interface configured yet. "
889 "Issue 'init' command in startup scripts "
890 "before communicating with targets.");
891 return ERROR_FAIL;
892 }
893
894 return jtag->execute_queue();
895 }
896
897 void jtag_execute_queue_noclear(void)
898 {
899 /* each flush can take as much as 1-2ms on high bandwidth low latency interfaces.
900 * E.g. a JTAG over TCP/IP or USB....
901 */
902 jtag_flush_queue_count++;
903
904 int retval=interface_jtag_execute_queue();
905 /* we keep the first error */
906 if ((jtag_error==ERROR_OK)&&(retval!=ERROR_OK))
907 {
908 jtag_error=retval;
909 }
910 }
911
912 int jtag_get_flush_queue_count(void)
913 {
914 return jtag_flush_queue_count;
915 }
916
917 int jtag_execute_queue(void)
918 {
919 int retval;
920 jtag_execute_queue_noclear();
921 retval=jtag_error;
922 jtag_error=ERROR_OK;
923 return retval;
924 }
925
926 static int jtag_reset_callback(enum jtag_event event, void *priv)
927 {
928 jtag_tap_t *tap = priv;
929
930 LOG_DEBUG("-");
931
932 if (event == JTAG_TRST_ASSERTED)
933 {
934 buf_set_ones(tap->cur_instr, tap->ir_length);
935 tap->bypass = 1;
936 }
937
938 return ERROR_OK;
939 }
940
941 void jtag_sleep(u32 us)
942 {
943 alive_sleep(us/1000);
944 }
945
946 /* Try to examine chain layout according to IEEE 1149.1 §12
947 */
948 static int jtag_examine_chain(void)
949 {
950 jtag_tap_t *tap;
951 scan_field_t field;
952 u8 idcode_buffer[JTAG_MAX_CHAIN_SIZE * 4];
953 int i;
954 int bit_count;
955 int device_count = 0;
956 u8 zero_check = 0x0;
957 u8 one_check = 0xff;
958
959 field.tap = NULL;
960 field.num_bits = sizeof(idcode_buffer) * 8;
961 field.out_value = idcode_buffer;
962
963 field.in_value = idcode_buffer;
964
965
966
967
968 for (i = 0; i < JTAG_MAX_CHAIN_SIZE; i++)
969 {
970 buf_set_u32(idcode_buffer, i * 32, 32, 0x000000FF);
971 }
972
973 jtag_add_plain_dr_scan(1, &field, TAP_RESET);
974 jtag_execute_queue();
975
976 for (i = 0; i < JTAG_MAX_CHAIN_SIZE * 4; i++)
977 {
978 zero_check |= idcode_buffer[i];
979 one_check &= idcode_buffer[i];
980 }
981
982 /* if there wasn't a single non-zero bit or if all bits were one, the scan isn't valid */
983 if ((zero_check == 0x00) || (one_check == 0xff))
984 {
985 LOG_ERROR("JTAG communication failure, check connection, JTAG interface, target power etc.");
986 return ERROR_JTAG_INIT_FAILED;
987 }
988
989 /* point at the 1st tap */
990 tap = jtag_NextEnabledTap(NULL);
991 if( tap == NULL ){
992 LOG_ERROR("JTAG: No taps enabled?");
993 return ERROR_JTAG_INIT_FAILED;
994 }
995
996 for (bit_count = 0; bit_count < (JTAG_MAX_CHAIN_SIZE * 32) - 31;)
997 {
998 u32 idcode = buf_get_u32(idcode_buffer, bit_count, 32);
999 if ((idcode & 1) == 0)
1000 {
1001 /* LSB must not be 0, this indicates a device in bypass */
1002 LOG_WARNING("Tap/Device does not have IDCODE");
1003 idcode=0;
1004
1005 bit_count += 1;
1006 }
1007 else
1008 {
1009 u32 manufacturer;
1010 u32 part;
1011 u32 version;
1012
1013 /* some devices, such as AVR will output all 1's instead of TDI
1014 input value at end of chain. */
1015 if ((idcode == 0x000000FF)||(idcode == 0xFFFFFFFF))
1016 {
1017 int unexpected=0;
1018 /* End of chain (invalid manufacturer ID)
1019 *
1020 * The JTAG examine is the very first thing that happens
1021 *
1022 * A single JTAG device requires only 64 bits to be read back correctly.
1023 *
1024 * The code below adds a check that the rest of the data scanned (640 bits)
1025 * are all as expected. This helps diagnose/catch problems with the JTAG chain
1026 *
1027 * earlier and gives more helpful/explicit error messages.
1028 */
1029 for (bit_count += 32; bit_count < (JTAG_MAX_CHAIN_SIZE * 32) - 31;bit_count += 32)
1030 {
1031 idcode = buf_get_u32(idcode_buffer, bit_count, 32);
1032 if (unexpected||((idcode != 0x000000FF)&&(idcode != 0xFFFFFFFF)))
1033 {
1034 LOG_WARNING("Unexpected idcode after end of chain! %d 0x%08x", bit_count, idcode);
1035 unexpected = 1;
1036 }
1037 }
1038
1039 break;
1040 }
1041
1042 #define EXTRACT_MFG(X) (((X) & 0xffe) >> 1)
1043 manufacturer = EXTRACT_MFG(idcode);
1044 #define EXTRACT_PART(X) (((X) & 0xffff000) >> 12)
1045 part = EXTRACT_PART(idcode);
1046 #define EXTRACT_VER(X) (((X) & 0xf0000000) >> 28)
1047 version = EXTRACT_VER(idcode);
1048
1049 LOG_INFO("JTAG tap: %s tap/device found: 0x%8.8x (Manufacturer: 0x%3.3x, Part: 0x%4.4x, Version: 0x%1.1x)",
1050 ((tap != NULL) ? (tap->dotted_name) : "(not-named)"),
1051 idcode, manufacturer, part, version);
1052
1053 bit_count += 32;
1054 }
1055 if (tap)
1056 {
1057 tap->idcode = idcode;
1058
1059 if (tap->expected_ids_cnt > 0) {
1060 /* Loop over the expected identification codes and test for a match */
1061 u8 ii;
1062 for (ii = 0; ii < tap->expected_ids_cnt; ii++) {
1063 if( tap->idcode == tap->expected_ids[ii] ){
1064 break;
1065 }
1066 }
1067
1068 /* If none of the expected ids matched, log an error */
1069 if (ii == tap->expected_ids_cnt) {
1070 LOG_ERROR("JTAG tap: %s got: 0x%08x (mfg: 0x%3.3x, part: 0x%4.4x, ver: 0x%1.1x)",
1071 tap->dotted_name,
1072 idcode,
1073 EXTRACT_MFG( tap->idcode ),
1074 EXTRACT_PART( tap->idcode ),
1075 EXTRACT_VER( tap->idcode ) );
1076 for (ii = 0; ii < tap->expected_ids_cnt; ii++) {
1077 LOG_ERROR("JTAG tap: %s expected %hhu of %hhu: 0x%08x (mfg: 0x%3.3x, part: 0x%4.4x, ver: 0x%1.1x)",
1078 tap->dotted_name,
1079 ii + 1,
1080 tap->expected_ids_cnt,
1081 tap->expected_ids[ii],
1082 EXTRACT_MFG( tap->expected_ids[ii] ),
1083 EXTRACT_PART( tap->expected_ids[ii] ),
1084 EXTRACT_VER( tap->expected_ids[ii] ) );
1085 }
1086
1087 return ERROR_JTAG_INIT_FAILED;
1088 } else {
1089 LOG_INFO("JTAG Tap/device matched");
1090 }
1091 } else {
1092 #if 0
1093 LOG_INFO("JTAG TAP ID: 0x%08x - Unknown - please report (A) chipname and (B) idcode to the openocd project",
1094 tap->idcode);
1095 #endif
1096 }
1097 tap = jtag_NextEnabledTap(tap);
1098 }
1099 device_count++;
1100 }
1101
1102 /* see if number of discovered devices matches configuration */
1103 if (device_count != jtag_NumEnabledTaps())
1104 {
1105 LOG_ERROR("number of discovered devices in JTAG chain (%i) doesn't match (enabled) configuration (%i), total taps: %d",
1106 device_count, jtag_NumEnabledTaps(), jtag_NumTotalTaps());
1107 LOG_ERROR("check the config file and ensure proper JTAG communication (connections, speed, ...)");
1108 return ERROR_JTAG_INIT_FAILED;
1109 }
1110
1111 return ERROR_OK;
1112 }
1113
1114 static int jtag_validate_chain(void)
1115 {
1116 jtag_tap_t *tap;
1117 int total_ir_length = 0;
1118 u8 *ir_test = NULL;
1119 scan_field_t field;
1120 int chain_pos = 0;
1121
1122 tap = NULL;
1123 total_ir_length = 0;
1124 for(;;){
1125 tap = jtag_NextEnabledTap(tap);
1126 if( tap == NULL ){
1127 break;
1128 }
1129 total_ir_length += tap->ir_length;
1130 }
1131
1132 total_ir_length += 2;
1133 ir_test = malloc(CEIL(total_ir_length, 8));
1134 buf_set_ones(ir_test, total_ir_length);
1135
1136 field.tap = NULL;
1137 field.num_bits = total_ir_length;
1138 field.out_value = ir_test;
1139 field.in_value = ir_test;
1140
1141
1142 jtag_add_plain_ir_scan(1, &field, TAP_RESET);
1143 jtag_execute_queue();
1144
1145 tap = NULL;
1146 chain_pos = 0;
1147 int val;
1148 for(;;){
1149 tap = jtag_NextEnabledTap(tap);
1150 if( tap == NULL ){
1151 break;
1152 }
1153
1154 val = buf_get_u32(ir_test, chain_pos, 2);
1155 if (val != 0x1)
1156 {
1157 char *cbuf = buf_to_str(ir_test, total_ir_length, 16);
1158 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);
1159 free(cbuf);
1160 free(ir_test);
1161 return ERROR_JTAG_INIT_FAILED;
1162 }
1163 chain_pos += tap->ir_length;
1164 }
1165
1166 val = buf_get_u32(ir_test, chain_pos, 2);
1167 if (val != 0x3)
1168 {
1169 char *cbuf = buf_to_str(ir_test, total_ir_length, 16);
1170 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);
1171 free(cbuf);
1172 free(ir_test);
1173 return ERROR_JTAG_INIT_FAILED;
1174 }
1175
1176 free(ir_test);
1177
1178 return ERROR_OK;
1179 }
1180
1181 enum jtag_tap_cfg_param {
1182 JCFG_EVENT
1183 };
1184
1185 static Jim_Nvp nvp_config_opts[] = {
1186 { .name = "-event", .value = JCFG_EVENT },
1187
1188 { .name = NULL, .value = -1 }
1189 };
1190
1191 static int jtag_tap_configure_cmd( Jim_GetOptInfo *goi, jtag_tap_t * tap)
1192 {
1193 Jim_Nvp *n;
1194 Jim_Obj *o;
1195 int e;
1196
1197 /* parse config or cget options */
1198 while (goi->argc > 0) {
1199 Jim_SetEmptyResult (goi->interp);
1200
1201 e = Jim_GetOpt_Nvp(goi, nvp_config_opts, &n);
1202 if (e != JIM_OK) {
1203 Jim_GetOpt_NvpUnknown(goi, nvp_config_opts, 0);
1204 return e;
1205 }
1206
1207 switch (n->value) {
1208 case JCFG_EVENT:
1209 if (goi->argc == 0) {
1210 Jim_WrongNumArgs( goi->interp, goi->argc, goi->argv, "-event ?event-name? ..." );
1211 return JIM_ERR;
1212 }
1213
1214 e = Jim_GetOpt_Nvp( goi, nvp_jtag_tap_event, &n );
1215 if (e != JIM_OK) {
1216 Jim_GetOpt_NvpUnknown(goi, nvp_jtag_tap_event, 1);
1217 return e;
1218 }
1219
1220 if (goi->isconfigure) {
1221 if (goi->argc != 1) {
1222 Jim_WrongNumArgs(goi->interp, goi->argc, goi->argv, "-event ?event-name? ?EVENT-BODY?");
1223 return JIM_ERR;
1224 }
1225 } else {
1226 if (goi->argc != 0) {
1227 Jim_WrongNumArgs(goi->interp, goi->argc, goi->argv, "-event ?event-name?");
1228 return JIM_ERR;
1229 }
1230 }
1231
1232 {
1233 jtag_tap_event_action_t *jteap;
1234
1235 jteap = tap->event_action;
1236 /* replace existing? */
1237 while (jteap) {
1238 if (jteap->event == (enum jtag_tap_event)n->value) {
1239 break;
1240 }
1241 jteap = jteap->next;
1242 }
1243
1244 if (goi->isconfigure) {
1245 if (jteap == NULL) {
1246 /* create new */
1247 jteap = calloc(1, sizeof (*jteap));
1248 }
1249 jteap->event = n->value;
1250 Jim_GetOpt_Obj( goi, &o);
1251 if (jteap->body) {
1252 Jim_DecrRefCount(interp, jteap->body);
1253 }
1254 jteap->body = Jim_DuplicateObj(goi->interp, o);
1255 Jim_IncrRefCount(jteap->body);
1256
1257 /* add to head of event list */
1258 jteap->next = tap->event_action;
1259 tap->event_action = jteap;
1260 Jim_SetEmptyResult(goi->interp);
1261 } else {
1262 /* get */
1263 if (jteap == NULL) {
1264 Jim_SetEmptyResult(goi->interp);
1265 } else {
1266 Jim_SetResult(goi->interp, Jim_DuplicateObj(goi->interp, jteap->body));
1267 }
1268 }
1269 }
1270 /* loop for more */
1271 break;
1272 }
1273 } /* while (goi->argc) */
1274
1275 return JIM_OK;
1276 }
1277
1278
1279 static void jtag_tap_init(jtag_tap_t *tap)
1280 {
1281 assert(0 != tap->ir_length);
1282
1283 tap->expected = malloc(tap->ir_length);
1284 tap->expected_mask = malloc(tap->ir_length);
1285 tap->cur_instr = malloc(tap->ir_length);
1286
1287 buf_set_u32(tap->expected, 0, tap->ir_length, tap->ir_capture_value);
1288 buf_set_u32(tap->expected_mask, 0, tap->ir_length, tap->ir_capture_mask);
1289 buf_set_ones(tap->cur_instr, tap->ir_length);
1290
1291 // place TAP in bypass mode
1292 tap->bypass = 1;
1293 // register the reset callback for the TAP
1294 jtag_register_event_callback(&jtag_reset_callback, tap);
1295
1296 LOG_DEBUG("Created Tap: %s @ abs position %d, "
1297 "irlen %d, capture: 0x%x mask: 0x%x", tap->dotted_name,
1298 tap->abs_chain_position, tap->ir_length,
1299 tap->ir_capture_value, tap->ir_capture_mask);
1300 jtag_tap_add(tap);
1301 }
1302
1303 static void jtag_tap_free(jtag_tap_t *tap)
1304 {
1305 /// @todo is anything missing? no memory leaks please
1306 free((void *)tap->expected_ids);
1307 free((void *)tap->chip);
1308 free((void *)tap->tapname);
1309 free((void *)tap->dotted_name);
1310 free(tap);
1311 }
1312
1313 static int jim_newtap_cmd( Jim_GetOptInfo *goi )
1314 {
1315 jtag_tap_t *pTap;
1316 jim_wide w;
1317 int x;
1318 int e;
1319 int reqbits;
1320 Jim_Nvp *n;
1321 char *cp;
1322 const Jim_Nvp opts[] = {
1323 #define NTAP_OPT_IRLEN 0
1324 { .name = "-irlen" , .value = NTAP_OPT_IRLEN },
1325 #define NTAP_OPT_IRMASK 1
1326 { .name = "-irmask" , .value = NTAP_OPT_IRMASK },
1327 #define NTAP_OPT_IRCAPTURE 2
1328 { .name = "-ircapture" , .value = NTAP_OPT_IRCAPTURE },
1329 #define NTAP_OPT_ENABLED 3
1330 { .name = "-enable" , .value = NTAP_OPT_ENABLED },
1331 #define NTAP_OPT_DISABLED 4
1332 { .name = "-disable" , .value = NTAP_OPT_DISABLED },
1333 #define NTAP_OPT_EXPECTED_ID 5
1334 { .name = "-expected-id" , .value = NTAP_OPT_EXPECTED_ID },
1335 { .name = NULL , .value = -1 },
1336 };
1337
1338 pTap = malloc( sizeof(jtag_tap_t) );
1339 memset( pTap, 0, sizeof(*pTap) );
1340 if( !pTap ){
1341 Jim_SetResult_sprintf( goi->interp, "no memory");
1342 return JIM_ERR;
1343 }
1344 /*
1345 * we expect CHIP + TAP + OPTIONS
1346 * */
1347 if( goi->argc < 3 ){
1348 Jim_SetResult_sprintf(goi->interp, "Missing CHIP TAP OPTIONS ....");
1349 return JIM_ERR;
1350 }
1351 Jim_GetOpt_String( goi, &cp, NULL );
1352 pTap->chip = strdup(cp);
1353
1354 Jim_GetOpt_String( goi, &cp, NULL );
1355 pTap->tapname = strdup(cp);
1356
1357 /* name + dot + name + null */
1358 x = strlen(pTap->chip) + 1 + strlen(pTap->tapname) + 1;
1359 cp = malloc( x );
1360 sprintf( cp, "%s.%s", pTap->chip, pTap->tapname );
1361 pTap->dotted_name = cp;
1362
1363 LOG_DEBUG("Creating New Tap, Chip: %s, Tap: %s, Dotted: %s, %d params",
1364 pTap->chip, pTap->tapname, pTap->dotted_name, goi->argc);
1365
1366 /* default is enabled */
1367 pTap->enabled = 1;
1368
1369 /* deal with options */
1370 #define NTREQ_IRLEN 1
1371 #define NTREQ_IRCAPTURE 2
1372 #define NTREQ_IRMASK 4
1373
1374 /* clear them as we find them */
1375 reqbits = (NTREQ_IRLEN | NTREQ_IRCAPTURE | NTREQ_IRMASK);
1376
1377 while( goi->argc ){
1378 e = Jim_GetOpt_Nvp( goi, opts, &n );
1379 if( e != JIM_OK ){
1380 Jim_GetOpt_NvpUnknown( goi, opts, 0 );
1381 return e;
1382 }
1383 LOG_DEBUG("Processing option: %s", n->name );
1384 switch( n->value ){
1385 case NTAP_OPT_ENABLED:
1386 pTap->enabled = 1;
1387 break;
1388 case NTAP_OPT_DISABLED:
1389 pTap->enabled = 0;
1390 break;
1391 case NTAP_OPT_EXPECTED_ID:
1392 {
1393 u32 *new_expected_ids;
1394
1395 e = Jim_GetOpt_Wide( goi, &w );
1396 if( e != JIM_OK) {
1397 Jim_SetResult_sprintf(goi->interp, "option: %s bad parameter", n->name);
1398 return e;
1399 }
1400
1401 new_expected_ids = malloc(sizeof(u32) * (pTap->expected_ids_cnt + 1));
1402 if (new_expected_ids == NULL) {
1403 Jim_SetResult_sprintf( goi->interp, "no memory");
1404 return JIM_ERR;
1405 }
1406
1407 memcpy(new_expected_ids, pTap->expected_ids, sizeof(u32) * pTap->expected_ids_cnt);
1408
1409 new_expected_ids[pTap->expected_ids_cnt] = w;
1410
1411 free(pTap->expected_ids);
1412 pTap->expected_ids = new_expected_ids;
1413 pTap->expected_ids_cnt++;
1414 break;
1415 }
1416 case NTAP_OPT_IRLEN:
1417 case NTAP_OPT_IRMASK:
1418 case NTAP_OPT_IRCAPTURE:
1419 e = Jim_GetOpt_Wide( goi, &w );
1420 if( e != JIM_OK ){
1421 Jim_SetResult_sprintf( goi->interp, "option: %s bad parameter", n->name );
1422 return e;
1423 }
1424 if( (w < 0) || (w > 0xffff) ){
1425 /* wacky value */
1426 Jim_SetResult_sprintf( goi->interp, "option: %s - wacky value: %d (0x%x)",
1427 n->name, (int)(w), (int)(w));
1428 return JIM_ERR;
1429 }
1430 switch(n->value){
1431 case NTAP_OPT_IRLEN:
1432 pTap->ir_length = w;
1433 reqbits &= (~(NTREQ_IRLEN));
1434 break;
1435 case NTAP_OPT_IRMASK:
1436 pTap->ir_capture_mask = w;
1437 reqbits &= (~(NTREQ_IRMASK));
1438 break;
1439 case NTAP_OPT_IRCAPTURE:
1440 pTap->ir_capture_value = w;
1441 reqbits &= (~(NTREQ_IRCAPTURE));
1442 break;
1443 }
1444 } /* switch(n->value) */
1445 } /* while( goi->argc ) */
1446
1447 /* Did all the required option bits get cleared? */
1448 if (0 == reqbits)
1449 {
1450 jtag_tap_init(pTap);
1451 return ERROR_OK;
1452 }
1453
1454 Jim_SetResult_sprintf(goi->interp,
1455 "newtap: %s missing required parameters",
1456 pTap->dotted_name);
1457 jtag_tap_free(pTap);
1458 return JIM_ERR;
1459 }
1460
1461 static int jim_jtag_command( Jim_Interp *interp, int argc, Jim_Obj *const *argv )
1462 {
1463 Jim_GetOptInfo goi;
1464 int e;
1465 Jim_Nvp *n;
1466 Jim_Obj *o;
1467 struct command_context_s *context;
1468
1469 enum {
1470 JTAG_CMD_INTERFACE,
1471 JTAG_CMD_INIT_RESET,
1472 JTAG_CMD_NEWTAP,
1473 JTAG_CMD_TAPENABLE,
1474 JTAG_CMD_TAPDISABLE,
1475 JTAG_CMD_TAPISENABLED,
1476 JTAG_CMD_CONFIGURE,
1477 JTAG_CMD_CGET
1478 };
1479
1480 const Jim_Nvp jtag_cmds[] = {
1481 { .name = "interface" , .value = JTAG_CMD_INTERFACE },
1482 { .name = "arp_init-reset", .value = JTAG_CMD_INIT_RESET },
1483 { .name = "newtap" , .value = JTAG_CMD_NEWTAP },
1484 { .name = "tapisenabled" , .value = JTAG_CMD_TAPISENABLED },
1485 { .name = "tapenable" , .value = JTAG_CMD_TAPENABLE },
1486 { .name = "tapdisable" , .value = JTAG_CMD_TAPDISABLE },
1487 { .name = "configure" , .value = JTAG_CMD_CONFIGURE },
1488 { .name = "cget" , .value = JTAG_CMD_CGET },
1489
1490 { .name = NULL, .value = -1 },
1491 };
1492
1493 context = Jim_GetAssocData(interp, "context");
1494 /* go past the command */
1495 Jim_GetOpt_Setup( &goi, interp, argc-1, argv+1 );
1496
1497 e = Jim_GetOpt_Nvp( &goi, jtag_cmds, &n );
1498 if( e != JIM_OK ){
1499 Jim_GetOpt_NvpUnknown( &goi, jtag_cmds, 0 );
1500 return e;
1501 }
1502 Jim_SetEmptyResult( goi.interp );
1503 switch( n->value ){
1504 case JTAG_CMD_INTERFACE:
1505 /* return the name of the interface */
1506 /* TCL code might need to know the exact type... */
1507 /* FUTURE: we allow this as a means to "set" the interface. */
1508 if( goi.argc != 0 ){
1509 Jim_WrongNumArgs( goi.interp, 1, goi.argv-1, "(no params)");
1510 return JIM_ERR;
1511 }
1512 Jim_SetResultString( goi.interp, jtag_interface->name, -1 );
1513 return JIM_OK;
1514 case JTAG_CMD_INIT_RESET:
1515 if( goi.argc != 0 ){
1516 Jim_WrongNumArgs( goi.interp, 1, goi.argv-1, "(no params)");
1517 return JIM_ERR;
1518 }
1519 e = jtag_init_reset(context);
1520 if( e != ERROR_OK ){
1521 Jim_SetResult_sprintf( goi.interp, "error: %d", e);
1522 return JIM_ERR;
1523 }
1524 return JIM_OK;
1525 case JTAG_CMD_NEWTAP:
1526 return jim_newtap_cmd( &goi );
1527 break;
1528 case JTAG_CMD_TAPISENABLED:
1529 case JTAG_CMD_TAPENABLE:
1530 case JTAG_CMD_TAPDISABLE:
1531 if( goi.argc != 1 ){
1532 Jim_SetResultString( goi.interp, "Too many parameters",-1 );
1533 return JIM_ERR;
1534 }
1535
1536 {
1537 jtag_tap_t *t;
1538 t = jtag_TapByJimObj( goi.interp, goi.argv[0] );
1539 if( t == NULL ){
1540 return JIM_ERR;
1541 }
1542 switch( n->value ){
1543 case JTAG_CMD_TAPISENABLED:
1544 e = t->enabled;
1545 break;
1546 case JTAG_CMD_TAPENABLE:
1547 jtag_tap_handle_event( t, JTAG_TAP_EVENT_ENABLE);
1548 e = 1;
1549 t->enabled = e;
1550 break;
1551 case JTAG_CMD_TAPDISABLE:
1552 jtag_tap_handle_event( t, JTAG_TAP_EVENT_DISABLE);
1553 e = 0;
1554 t->enabled = e;
1555 break;
1556 }
1557 Jim_SetResult( goi.interp, Jim_NewIntObj( goi.interp, e ) );
1558 return JIM_OK;
1559 }
1560 break;
1561
1562 case JTAG_CMD_CGET:
1563 if( goi.argc < 2 ){
1564 Jim_WrongNumArgs( goi.interp, 0, NULL, "?tap-name? -option ...");
1565 return JIM_ERR;
1566 }
1567
1568 {
1569 jtag_tap_t *t;
1570
1571 Jim_GetOpt_Obj(&goi, &o);
1572 t = jtag_TapByJimObj( goi.interp, o );
1573 if( t == NULL ){
1574 return JIM_ERR;
1575 }
1576
1577 goi.isconfigure = 0;
1578 return jtag_tap_configure_cmd( &goi, t);
1579 }
1580 break;
1581
1582 case JTAG_CMD_CONFIGURE:
1583 if( goi.argc < 3 ){
1584 Jim_WrongNumArgs( goi.interp, 0, NULL, "?tap-name? -option ?VALUE? ...");
1585 return JIM_ERR;
1586 }
1587
1588 {
1589 jtag_tap_t *t;
1590
1591 Jim_GetOpt_Obj(&goi, &o);
1592 t = jtag_TapByJimObj( goi.interp, o );
1593 if( t == NULL ){
1594 return JIM_ERR;
1595 }
1596
1597 goi.isconfigure = 1;
1598 return jtag_tap_configure_cmd( &goi, t);
1599 }
1600 }
1601
1602 return JIM_ERR;
1603 }
1604
1605 int jtag_register_commands(struct command_context_s *cmd_ctx)
1606 {
1607 register_jim( cmd_ctx, "jtag", jim_jtag_command, "perform jtag tap actions");
1608
1609 register_command(cmd_ctx, NULL, "interface", handle_interface_command,
1610 COMMAND_CONFIG, "try to configure interface");
1611 register_command(cmd_ctx, NULL, "jtag_speed", handle_jtag_speed_command,
1612 COMMAND_ANY, "(DEPRECATED) set jtag speed (if supported)");
1613 register_command(cmd_ctx, NULL, "jtag_khz", handle_jtag_khz_command,
1614 COMMAND_ANY, "set maximum jtag speed (if supported); "
1615 "parameter is maximum khz, or 0 for adaptive clocking (RTCK).");
1616 register_command(cmd_ctx, NULL, "jtag_device", handle_jtag_device_command,
1617 COMMAND_CONFIG, "(DEPRECATED) jtag_device <ir_length> <ir_expected> <ir_mask>");
1618 register_command(cmd_ctx, NULL, "reset_config", handle_reset_config_command,
1619 COMMAND_ANY,
1620 "[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]");
1621 register_command(cmd_ctx, NULL, "jtag_nsrst_delay", handle_jtag_nsrst_delay_command,
1622 COMMAND_ANY, "jtag_nsrst_delay <ms> - delay after deasserting srst in ms");
1623 register_command(cmd_ctx, NULL, "jtag_ntrst_delay", handle_jtag_ntrst_delay_command,
1624 COMMAND_ANY, "jtag_ntrst_delay <ms> - delay after deasserting trst in ms");
1625
1626 register_command(cmd_ctx, NULL, "scan_chain", handle_scan_chain_command,
1627 COMMAND_EXEC, "print current scan chain configuration");
1628
1629 register_command(cmd_ctx, NULL, "endstate", handle_endstate_command,
1630 COMMAND_EXEC, "finish JTAG operations in <tap_state>");
1631 register_command(cmd_ctx, NULL, "jtag_reset", handle_jtag_reset_command,
1632 COMMAND_EXEC, "toggle reset lines <trst> <srst>");
1633 register_command(cmd_ctx, NULL, "runtest", handle_runtest_command,
1634 COMMAND_EXEC, "move to Run-Test/Idle, and execute <num_cycles>");
1635 register_command(cmd_ctx, NULL, "irscan", handle_irscan_command,
1636 COMMAND_EXEC, "execute IR scan <device> <instr> [dev2] [instr2] ...");
1637 register_jim(cmd_ctx, "drscan", Jim_Command_drscan, "execute DR scan <device> <num_bits> <value> <num_bits1> <value2> ...");
1638 register_jim(cmd_ctx, "flush_count", Jim_Command_flush_count, "returns number of times the JTAG queue has been flushed");
1639
1640 register_command(cmd_ctx, NULL, "verify_ircapture", handle_verify_ircapture_command,
1641 COMMAND_ANY, "verify value captured during Capture-IR <enable|disable>");
1642 register_command(cmd_ctx, NULL, "verify_jtag", handle_verify_jtag_command,
1643 COMMAND_ANY, "verify value capture <enable|disable>");
1644 register_command(cmd_ctx, NULL, "tms_sequence", handle_tms_sequence_command,
1645 COMMAND_ANY, "choose short(default) or long tms_sequence <short|long>");
1646 return ERROR_OK;
1647 }
1648
1649 int jtag_interface_init(struct command_context_s *cmd_ctx)
1650 {
1651 if (jtag)
1652 return ERROR_OK;
1653
1654 if (!jtag_interface)
1655 {
1656 /* nothing was previously specified by "interface" command */
1657 LOG_ERROR("JTAG interface has to be specified, see \"interface\" command");
1658 return ERROR_JTAG_INVALID_INTERFACE;
1659 }
1660 if(hasKHz)
1661 {
1662 jtag_interface->khz(jtag_get_speed_khz(), &jtag_speed);
1663 hasKHz = false;
1664 }
1665
1666 if (jtag_interface->init() != ERROR_OK)
1667 return ERROR_JTAG_INIT_FAILED;
1668
1669 jtag = jtag_interface;
1670 return ERROR_OK;
1671 }
1672
1673 static int jtag_init_inner(struct command_context_s *cmd_ctx)
1674 {
1675 jtag_tap_t *tap;
1676 int retval;
1677
1678 LOG_DEBUG("Init JTAG chain");
1679
1680 tap = jtag_NextEnabledTap(NULL);
1681 if( tap == NULL ){
1682 LOG_ERROR("There are no enabled taps?");
1683 return ERROR_JTAG_INIT_FAILED;
1684 }
1685
1686 jtag_add_tlr();
1687 if ((retval=jtag_execute_queue())!=ERROR_OK)
1688 return retval;
1689
1690 /* examine chain first, as this could discover the real chain layout */
1691 if (jtag_examine_chain() != ERROR_OK)
1692 {
1693 LOG_ERROR("trying to validate configured JTAG chain anyway...");
1694 }
1695
1696 if (jtag_validate_chain() != ERROR_OK)
1697 {
1698 LOG_WARNING("Could not validate JTAG chain, continuing anyway...");
1699 }
1700
1701 return ERROR_OK;
1702 }
1703
1704 int jtag_interface_quit(void)
1705 {
1706 if (!jtag || !jtag->quit)
1707 return ERROR_OK;
1708
1709 // close the JTAG interface
1710 int result = jtag->quit();
1711 if (ERROR_OK != result)
1712 LOG_ERROR("failed: %d", result);
1713
1714 return ERROR_OK;
1715 }
1716
1717
1718 int jtag_init_reset(struct command_context_s *cmd_ctx)
1719 {
1720 int retval;
1721
1722 if ((retval=jtag_interface_init(cmd_ctx)) != ERROR_OK)
1723 return retval;
1724
1725 LOG_DEBUG("Trying to bring the JTAG controller to life by asserting TRST / RESET");
1726
1727 /* Reset can happen after a power cycle.
1728 *
1729 * Ideally we would only assert TRST or run RESET before the target reset.
1730 *
1731 * However w/srst_pulls_trst, trst is asserted together with the target
1732 * reset whether we want it or not.
1733 *
1734 * NB! Some targets have JTAG circuitry disabled until a
1735 * trst & srst has been asserted.
1736 *
1737 * NB! here we assume nsrst/ntrst delay are sufficient!
1738 *
1739 * NB! order matters!!!! srst *can* disconnect JTAG circuitry
1740 *
1741 */
1742 jtag_add_reset(1, 0); /* RESET or TRST */
1743 if (jtag_reset_config & RESET_HAS_SRST)
1744 {
1745 jtag_add_reset(1, 1);
1746 if ((jtag_reset_config & RESET_SRST_PULLS_TRST)==0)
1747 jtag_add_reset(0, 1);
1748 }
1749 jtag_add_reset(0, 0);
1750 if ((retval = jtag_execute_queue()) != ERROR_OK)
1751 return retval;
1752
1753 /* Check that we can communication on the JTAG chain + eventually we want to
1754 * be able to perform enumeration only after OpenOCD has started
1755 * telnet and GDB server
1756 *
1757 * That would allow users to more easily perform any magic they need to before
1758 * reset happens.
1759 */
1760 return jtag_init_inner(cmd_ctx);
1761 }
1762
1763 int jtag_init(struct command_context_s *cmd_ctx)
1764 {
1765 int retval;
1766 if ((retval=jtag_interface_init(cmd_ctx)) != ERROR_OK)
1767 return retval;
1768 if (jtag_init_inner(cmd_ctx)==ERROR_OK)
1769 {
1770 return ERROR_OK;
1771 }
1772 return jtag_init_reset(cmd_ctx);
1773 }
1774
1775 void jtag_set_speed_khz(unsigned khz)
1776 {
1777 speed_khz = khz;
1778 }
1779 unsigned jtag_get_speed_khz(void)
1780 {
1781 return speed_khz;
1782 }
1783
1784 static int default_khz(int khz, int *jtag_speed)
1785 {
1786 LOG_ERROR("Translation from khz to jtag_speed not implemented");
1787 return ERROR_FAIL;
1788 }
1789
1790 static int default_speed_div(int speed, int *khz)
1791 {
1792 LOG_ERROR("Translation from jtag_speed to khz not implemented");
1793 return ERROR_FAIL;
1794 }
1795
1796 static int default_power_dropout(int *dropout)
1797 {
1798 *dropout=0; /* by default we can't detect power dropout */
1799 return ERROR_OK;
1800 }
1801
1802 static int default_srst_asserted(int *srst_asserted)
1803 {
1804 *srst_asserted=0; /* by default we can't detect srst asserted */
1805 return ERROR_OK;
1806 }
1807
1808 static int handle_interface_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1809 {
1810 int i;
1811 int retval;
1812
1813 /* check whether the interface is already configured */
1814 if (jtag_interface)
1815 {
1816 LOG_WARNING("Interface already configured, ignoring");
1817 return ERROR_OK;
1818 }
1819
1820 /* interface name is a mandatory argument */
1821 if (argc < 1 || args[0][0] == '\0')
1822 {
1823 return ERROR_COMMAND_SYNTAX_ERROR;
1824 }
1825
1826 for (i=0; jtag_interfaces[i]; i++)
1827 {
1828 if (strcmp(args[0], jtag_interfaces[i]->name) == 0)
1829 {
1830 if ((retval = jtag_interfaces[i]->register_commands(cmd_ctx)) != ERROR_OK)
1831 {
1832 return retval;
1833 }
1834
1835 jtag_interface = jtag_interfaces[i];
1836
1837 if (jtag_interface->khz == NULL)
1838 {
1839 jtag_interface->khz = default_khz;
1840 }
1841 if (jtag_interface->speed_div == NULL)
1842 {
1843 jtag_interface->speed_div = default_speed_div;
1844 }
1845 if (jtag_interface->power_dropout == NULL)
1846 {
1847 jtag_interface->power_dropout = default_power_dropout;
1848 }
1849 if (jtag_interface->srst_asserted == NULL)
1850 {
1851 jtag_interface->srst_asserted = default_srst_asserted;
1852 }
1853
1854 return ERROR_OK;
1855 }
1856 }
1857
1858 /* no valid interface was found (i.e. the configuration option,
1859 * didn't match one of the compiled-in interfaces
1860 */
1861 LOG_ERROR("No valid jtag interface found (%s)", args[0]);
1862 LOG_ERROR("compiled-in jtag interfaces:");
1863 for (i = 0; jtag_interfaces[i]; i++)
1864 {
1865 LOG_ERROR("%i: %s", i, jtag_interfaces[i]->name);
1866 }
1867
1868 return ERROR_JTAG_INVALID_INTERFACE;
1869 }
1870
1871 static int handle_jtag_device_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1872 {
1873 int e;
1874 char buf[1024];
1875 Jim_Obj *newargs[ 10 ];
1876 /*
1877 * CONVERT SYNTAX
1878 * argv[-1] = command
1879 * argv[ 0] = ir length
1880 * argv[ 1] = ir capture
1881 * argv[ 2] = ir mask
1882 * argv[ 3] = not actually used by anything but in the docs
1883 */
1884
1885 if( argc < 4 ){
1886 command_print( cmd_ctx, "OLD DEPRECATED SYNTAX: Please use the NEW syntax");
1887 return ERROR_OK;
1888 }
1889 command_print( cmd_ctx, "OLD SYNTAX: DEPRECATED - translating to new syntax");
1890 command_print( cmd_ctx, "jtag newtap CHIP TAP -irlen %s -ircapture %s -irvalue %s",
1891 args[0],
1892 args[1],
1893 args[2] );
1894 command_print( cmd_ctx, "Example: STM32 has 2 taps, the cortexM3(len4) + boundaryscan(len5)");
1895 command_print( cmd_ctx, "jtag newtap stm32 cortexm3 ....., thus creating the tap: \"stm32.cortexm3\"");
1896 command_print( cmd_ctx, "jtag newtap stm32 boundary ....., and the tap: \"stm32.boundary\"");
1897 command_print( cmd_ctx, "And then refer to the taps by the dotted name.");
1898
1899 newargs[0] = Jim_NewStringObj( interp, "jtag", -1 );
1900 newargs[1] = Jim_NewStringObj( interp, "newtap", -1 );
1901 sprintf( buf, "chip%d", jtag_NumTotalTaps() );
1902 newargs[2] = Jim_NewStringObj( interp, buf, -1 );
1903 sprintf( buf, "tap%d", jtag_NumTotalTaps() );
1904 newargs[3] = Jim_NewStringObj( interp, buf, -1 );
1905 newargs[4] = Jim_NewStringObj( interp, "-irlen", -1 );
1906 newargs[5] = Jim_NewStringObj( interp, args[0], -1 );
1907 newargs[6] = Jim_NewStringObj( interp, "-ircapture", -1 );
1908 newargs[7] = Jim_NewStringObj( interp, args[1], -1 );
1909 newargs[8] = Jim_NewStringObj( interp, "-irmask", -1 );
1910 newargs[9] = Jim_NewStringObj( interp, args[2], -1 );
1911
1912 command_print( cmd_ctx, "NEW COMMAND:");
1913 sprintf( buf, "%s %s %s %s %s %s %s %s %s %s",
1914 Jim_GetString( newargs[0], NULL ),
1915 Jim_GetString( newargs[1], NULL ),
1916 Jim_GetString( newargs[2], NULL ),
1917 Jim_GetString( newargs[3], NULL ),
1918 Jim_GetString( newargs[4], NULL ),
1919 Jim_GetString( newargs[5], NULL ),
1920 Jim_GetString( newargs[6], NULL ),
1921 Jim_GetString( newargs[7], NULL ),
1922 Jim_GetString( newargs[8], NULL ),
1923 Jim_GetString( newargs[9], NULL ) );
1924
1925 e = jim_jtag_command( interp, 10, newargs );
1926 if( e != JIM_OK ){
1927 command_print( cmd_ctx, "%s", Jim_GetString( Jim_GetResult(interp), NULL ) );
1928 }
1929 return e;
1930 }
1931
1932 static int handle_scan_chain_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1933 {
1934 jtag_tap_t *tap;
1935
1936 tap = jtag_AllTaps();
1937 command_print(cmd_ctx, " TapName | Enabled | IdCode Expected IrLen IrCap IrMask Instr ");
1938 command_print(cmd_ctx, "---|--------------------|---------|------------|------------|------|------|------|---------");
1939
1940 while( tap ){
1941 u32 expected, expected_mask, cur_instr, ii;
1942 expected = buf_get_u32(tap->expected, 0, tap->ir_length);
1943 expected_mask = buf_get_u32(tap->expected_mask, 0, tap->ir_length);
1944 cur_instr = buf_get_u32(tap->cur_instr, 0, tap->ir_length);
1945
1946 command_print(cmd_ctx,
1947 "%2d | %-18s | %c | 0x%08x | 0x%08x | 0x%02x | 0x%02x | 0x%02x | 0x%02x",
1948 tap->abs_chain_position,
1949 tap->dotted_name,
1950 tap->enabled ? 'Y' : 'n',
1951 tap->idcode,
1952 (tap->expected_ids_cnt > 0 ? tap->expected_ids[0] : 0),
1953 tap->ir_length,
1954 expected,
1955 expected_mask,
1956 cur_instr);
1957
1958 for (ii = 1; ii < tap->expected_ids_cnt; ii++) {
1959 command_print(cmd_ctx, " | | | | 0x%08x | | | | ",
1960 tap->expected_ids[ii]);
1961 }
1962
1963 tap = tap->next_tap;
1964 }
1965
1966 return ERROR_OK;
1967 }
1968
1969 static int handle_reset_config_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1970 {
1971 int new_cfg = 0;
1972 int mask = 0;
1973
1974 if (argc < 1)
1975 return ERROR_COMMAND_SYNTAX_ERROR;
1976
1977 /* Original versions cared about the order of these tokens:
1978 * reset_config signals [combination [trst_type [srst_type]]]
1979 * They also clobbered the previous configuration even on error.
1980 *
1981 * Here we don't care about the order, and only change values
1982 * which have been explicitly specified.
1983 */
1984 for (; argc; argc--, args++) {
1985 int tmp = 0;
1986 int m;
1987
1988 /* signals */
1989 m = RESET_HAS_TRST | RESET_HAS_SRST;
1990 if (strcmp(*args, "none") == 0)
1991 tmp = RESET_NONE;
1992 else if (strcmp(*args, "trst_only") == 0)
1993 tmp = RESET_HAS_TRST;
1994 else if (strcmp(*args, "srst_only") == 0)
1995 tmp = RESET_HAS_SRST;
1996 else if (strcmp(*args, "trst_and_srst") == 0)
1997 tmp = RESET_HAS_TRST | RESET_HAS_SRST;
1998 else
1999 m = 0;
2000 if (mask & m) {
2001 LOG_ERROR("extra reset_config %s spec (%s)",
2002 "signal", *args);
2003 return ERROR_INVALID_ARGUMENTS;
2004 }
2005 if (m)
2006 goto next;
2007
2008 /* combination (options for broken wiring) */
2009 m = RESET_SRST_PULLS_TRST | RESET_TRST_PULLS_SRST;
2010 if (strcmp(*args, "separate") == 0)
2011 /* separate reset lines - default */;
2012 else if (strcmp(*args, "srst_pulls_trst") == 0)
2013 tmp |= RESET_SRST_PULLS_TRST;
2014 else if (strcmp(*args, "trst_pulls_srst") == 0)
2015 tmp |= RESET_TRST_PULLS_SRST;
2016 else if (strcmp(*args, "combined") == 0)
2017 tmp |= RESET_SRST_PULLS_TRST | RESET_TRST_PULLS_SRST;
2018 else
2019 m = 0;
2020 if (mask & m) {
2021 LOG_ERROR("extra reset_config %s spec (%s)",
2022 "combination", *args);
2023 return ERROR_INVALID_ARGUMENTS;
2024 }
2025 if (m)
2026 goto next;
2027
2028 /* trst_type (NOP without HAS_TRST) */
2029 m = RESET_TRST_OPEN_DRAIN;
2030 if (strcmp(*args, "trst_open_drain") == 0)
2031 tmp |= RESET_TRST_OPEN_DRAIN;
2032 else if (strcmp(*args, "trst_push_pull") == 0)
2033 /* push/pull from adapter - default */;
2034 else
2035 m = 0;
2036 if (mask & m) {
2037 LOG_ERROR("extra reset_config %s spec (%s)",
2038 "trst_type", *args);
2039 return ERROR_INVALID_ARGUMENTS;
2040 }
2041 if (m)
2042 goto next;
2043
2044 /* srst_type (NOP without HAS_SRST) */
2045 m |= RESET_SRST_PUSH_PULL;
2046 if (strcmp(*args, "srst_push_pull") == 0)
2047 tmp |= RESET_SRST_PUSH_PULL;
2048 else if (strcmp(*args, "srst_open_drain") == 0)
2049 /* open drain from adapter - default */;
2050 else
2051 m = 0;
2052 if (mask & m) {
2053 LOG_ERROR("extra reset_config %s spec (%s)",
2054 "srst_type", *args);
2055 return ERROR_INVALID_ARGUMENTS;
2056 }
2057 if (m)
2058 goto next;
2059
2060 /* caller provided nonsense; fail */
2061 LOG_ERROR("unknown reset_config flag (%s)", *args);
2062 return ERROR_INVALID_ARGUMENTS;
2063
2064 next:
2065 /* Remember the bits which were specified (mask)
2066 * and their new values (new_cfg).
2067 */
2068 mask |= m;
2069 new_cfg |= tmp;
2070 }
2071
2072 /* clear previous values of those bits, save new values */
2073 jtag_reset_config &= ~mask;
2074 jtag_reset_config |= new_cfg;
2075
2076 return ERROR_OK;
2077 }
2078
2079 static int handle_jtag_nsrst_delay_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2080 {
2081 if (argc < 1)
2082 {
2083 LOG_ERROR("jtag_nsrst_delay <ms> command takes one required argument");
2084 exit(-1);
2085 }
2086 else
2087 {
2088 jtag_nsrst_delay = strtoul(args[0], NULL, 0);
2089 }
2090
2091 return ERROR_OK;
2092 }
2093
2094 static int handle_jtag_ntrst_delay_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2095 {
2096 if (argc < 1)
2097 {
2098 LOG_ERROR("jtag_ntrst_delay <ms> command takes one required argument");
2099 exit(-1);
2100 }
2101 else
2102 {
2103 jtag_ntrst_delay = strtoul(args[0], NULL, 0);
2104 }
2105
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 {
2115 LOG_DEBUG("handle jtag speed");
2116
2117 int cur_speed = 0;
2118 cur_speed = jtag_speed = strtoul(args[0], NULL, 0);
2119
2120 /* this command can be called during CONFIG,
2121 * in which case jtag isn't initialized */
2122 if (jtag)
2123 {
2124 retval=jtag->speed(cur_speed);
2125 }
2126 } else if (argc == 0)
2127 {
2128 } else
2129 {
2130 return ERROR_COMMAND_SYNTAX_ERROR;
2131 }
2132 command_print(cmd_ctx, "jtag_speed: %d", jtag_speed);
2133
2134 return retval;
2135 }
2136
2137 static int handle_jtag_khz_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2138 {
2139 int retval=ERROR_OK;
2140 LOG_DEBUG("handle jtag khz");
2141
2142 int cur_speed = 0;
2143 if(argc == 1)
2144 {
2145 jtag_set_speed_khz(strtoul(args[0], NULL, 0));
2146 if (jtag != NULL)
2147 {
2148 LOG_DEBUG("have interface set up");
2149 int speed_div1;
2150 if ((retval=jtag->khz(jtag_get_speed_khz(), &speed_div1))!=ERROR_OK)
2151 {
2152 jtag_set_speed_khz(0);
2153 return retval;
2154 }
2155
2156 cur_speed = jtag_speed = speed_div1;
2157
2158 retval=jtag->speed(cur_speed);
2159 } else
2160 {
2161 hasKHz = true;
2162 }
2163 } else if (argc==0)
2164 {
2165 } else
2166 {
2167 return ERROR_COMMAND_SYNTAX_ERROR;
2168 }
2169 cur_speed = jtag_get_speed_khz();
2170
2171 if (jtag!=NULL)
2172 {
2173 if ((retval=jtag->speed_div(jtag_speed, &cur_speed))!=ERROR_OK)
2174 return retval;
2175 }
2176
2177 if (cur_speed)
2178 command_print(cmd_ctx, "%d kHz", cur_speed);
2179 else
2180 command_print(cmd_ctx, "RCLK - adaptive");
2181 return retval;
2182
2183 }
2184
2185 static int handle_endstate_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2186 {
2187 tap_state_t state;
2188
2189 if (argc < 1)
2190 {
2191 return ERROR_COMMAND_SYNTAX_ERROR;
2192 }
2193 else
2194 {
2195 state = tap_state_by_name( args[0] );
2196 if( state < 0 ){
2197 command_print( cmd_ctx, "Invalid state name: %s\n", args[0] );
2198 return ERROR_COMMAND_SYNTAX_ERROR;
2199 }
2200 jtag_set_end_state(state);
2201 jtag_execute_queue();
2202 }
2203 command_print(cmd_ctx, "current endstate: %s", tap_state_name(cmd_queue_end_state));
2204
2205 return ERROR_OK;
2206 }
2207
2208 static int handle_jtag_reset_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2209 {
2210 int trst = -1;
2211 int srst = -1;
2212
2213 if (argc < 2)
2214 {
2215 return ERROR_COMMAND_SYNTAX_ERROR;
2216 }
2217
2218 if (args[0][0] == '1')
2219 trst = 1;
2220 else if (args[0][0] == '0')
2221 trst = 0;
2222 else
2223 {
2224 return ERROR_COMMAND_SYNTAX_ERROR;
2225 }
2226
2227 if (args[1][0] == '1')
2228 srst = 1;
2229 else if (args[1][0] == '0')
2230 srst = 0;
2231 else
2232 {
2233 return ERROR_COMMAND_SYNTAX_ERROR;
2234 }
2235
2236 if (jtag_interface_init(cmd_ctx) != ERROR_OK)
2237 return ERROR_JTAG_INIT_FAILED;
2238
2239 jtag_add_reset(trst, srst);
2240 jtag_execute_queue();
2241
2242 return ERROR_OK;
2243 }
2244
2245 static int handle_runtest_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2246 {
2247 if (argc < 1)
2248 {
2249 return ERROR_COMMAND_SYNTAX_ERROR;
2250 }
2251
2252 jtag_add_runtest(strtol(args[0], NULL, 0), jtag_get_end_state());
2253 jtag_execute_queue();
2254
2255 return ERROR_OK;
2256
2257 }
2258
2259 /*
2260 * For "irscan" or "drscan" commands, the "end" (really, "next") state
2261 * should be stable ... and *NOT* a shift state, otherwise free-running
2262 * jtag clocks could change the values latched by the update state.
2263 */
2264 static bool scan_is_safe(tap_state_t state)
2265 {
2266 switch (state)
2267 {
2268 case TAP_RESET:
2269 case TAP_IDLE:
2270 case TAP_DRPAUSE:
2271 case TAP_IRPAUSE:
2272 return true;
2273 default:
2274 return false;
2275 }
2276 }
2277
2278
2279 static int handle_irscan_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2280 {
2281 int i;
2282 scan_field_t *fields;
2283 jtag_tap_t *tap;
2284 tap_state_t endstate;
2285
2286 if ((argc < 2) || (argc % 2))
2287 {
2288 return ERROR_COMMAND_SYNTAX_ERROR;
2289 }
2290
2291 /* optional "-endstate" "statename" at the end of the arguments,
2292 * so that e.g. IRPAUSE can let us load the data register before
2293 * entering RUN/IDLE to execute the instruction we load here.
2294 */
2295 endstate = TAP_IDLE;
2296
2297 if( argc >= 4 ){
2298 /* have at least one pair of numbers. */
2299 /* is last pair the magic text? */
2300 if( 0 == strcmp( "-endstate", args[ argc - 2 ] ) ){
2301 const char *cpA;
2302 const char *cpS;
2303 cpA = args[ argc-1 ];
2304 for( endstate = 0 ; endstate < TAP_NUM_STATES ; endstate++ ){
2305 cpS = tap_state_name( endstate );
2306 if( 0 == strcmp( cpA, cpS ) ){
2307 break;
2308 }
2309 }
2310 if( endstate >= TAP_NUM_STATES ){
2311 return ERROR_COMMAND_SYNTAX_ERROR;
2312 } else {
2313 if (!scan_is_safe(endstate))
2314 LOG_WARNING("irscan with unsafe "
2315 "endstate \"%s\"", cpA);
2316 /* found - remove the last 2 args */
2317 argc -= 2;
2318 }
2319 }
2320 }
2321
2322 int num_fields = argc / 2;
2323
2324 fields = malloc(sizeof(scan_field_t) * num_fields);
2325
2326 for (i = 0; i < num_fields; i++)
2327 {
2328 tap = jtag_TapByString( args[i*2] );
2329 if (tap==NULL)
2330 {
2331 command_print( cmd_ctx, "Tap: %s unknown", args[i*2] );
2332 return ERROR_FAIL;
2333 }
2334 int field_size = tap->ir_length;
2335 fields[i].tap = tap;
2336 fields[i].num_bits = field_size;
2337 fields[i].out_value = malloc(CEIL(field_size, 8));
2338 buf_set_u32(fields[i].out_value, 0, field_size, strtoul(args[i*2+1], NULL, 0));
2339 fields[i].in_value = NULL;
2340 }
2341
2342 /* did we have an endstate? */
2343 jtag_add_ir_scan(num_fields, fields, endstate);
2344
2345 int retval=jtag_execute_queue();
2346
2347 for (i = 0; i < num_fields; i++)
2348 free(fields[i].out_value);
2349
2350 free (fields);
2351
2352 return retval;
2353 }
2354
2355 static int Jim_Command_drscan(Jim_Interp *interp, int argc, Jim_Obj *const *args)
2356 {
2357 int retval;
2358 scan_field_t *fields;
2359 int num_fields;
2360 int field_count = 0;
2361 int i, e;
2362 jtag_tap_t *tap;
2363 tap_state_t endstate;
2364
2365 /* args[1] = device
2366 * args[2] = num_bits
2367 * args[3] = hex string
2368 * ... repeat num bits and hex string ...
2369 *
2370 * .. optionally:
2371 * args[N-2] = "-endstate"
2372 * args[N-1] = statename
2373 */
2374 if ((argc < 4) || ((argc % 2)!=0))
2375 {
2376 Jim_WrongNumArgs(interp, 1, args, "wrong arguments");
2377 return JIM_ERR;
2378 }
2379
2380 endstate = TAP_IDLE;
2381
2382 /* validate arguments as numbers */
2383 e = JIM_OK;
2384 for (i = 2; i < argc; i+=2)
2385 {
2386 long bits;
2387 const char *cp;
2388
2389 e = Jim_GetLong(interp, args[i], &bits);
2390 /* If valid - try next arg */
2391 if( e == JIM_OK ){
2392 continue;
2393 }
2394
2395 /* Not valid.. are we at the end? */
2396 if ( ((i+2) != argc) ){
2397 /* nope, then error */
2398 return e;
2399 }
2400
2401 /* it could be: "-endstate FOO"
2402 * e.g. DRPAUSE so we can issue more instructions
2403 * before entering RUN/IDLE and executing them.
2404 */
2405
2406 /* get arg as a string. */
2407 cp = Jim_GetString( args[i], NULL );
2408 /* is it the magic? */
2409 if( 0 == strcmp( "-endstate", cp ) ){
2410 /* is the statename valid? */
2411 cp = Jim_GetString( args[i+1], NULL );
2412
2413 /* see if it is a valid state name */
2414 endstate = tap_state_by_name(cp);
2415 if( endstate < 0 ){
2416 /* update the error message */
2417 Jim_SetResult_sprintf(interp,"endstate: %s invalid", cp );
2418 } else {
2419 if (!scan_is_safe(endstate))
2420 LOG_WARNING("drscan with unsafe "
2421 "endstate \"%s\"", cp);
2422
2423 /* valid - so clear the error */
2424 e = JIM_OK;
2425 /* and remove the last 2 args */
2426 argc -= 2;
2427 }
2428 }
2429
2430 /* Still an error? */
2431 if( e != JIM_OK ){
2432 return e; /* too bad */
2433 }
2434 } /* validate args */
2435
2436 tap = jtag_TapByJimObj( interp, args[1] );
2437 if( tap == NULL ){
2438 return JIM_ERR;
2439 }
2440
2441 num_fields=(argc-2)/2;
2442 fields = malloc(sizeof(scan_field_t) * num_fields);
2443 for (i = 2; i < argc; i+=2)
2444 {
2445 long bits;
2446 int len;
2447 const char *str;
2448
2449 Jim_GetLong(interp, args[i], &bits);
2450 str = Jim_GetString(args[i+1], &len);
2451
2452 fields[field_count].tap = tap;
2453 fields[field_count].num_bits = bits;
2454 fields[field_count].out_value = malloc(CEIL(bits, 8));
2455 str_to_buf(str, len, fields[field_count].out_value, bits, 0);
2456 fields[field_count].in_value = fields[field_count].out_value;
2457 field_count++;
2458 }
2459
2460 jtag_add_dr_scan(num_fields, fields, endstate);
2461
2462 retval = jtag_execute_queue();
2463 if (retval != ERROR_OK)
2464 {
2465 Jim_SetResultString(interp, "drscan: jtag execute failed",-1);
2466 return JIM_ERR;
2467 }
2468
2469 field_count=0;
2470 Jim_Obj *list = Jim_NewListObj(interp, NULL, 0);
2471 for (i = 2; i < argc; i+=2)
2472 {
2473 long bits;
2474 char *str;
2475
2476 Jim_GetLong(interp, args[i], &bits);
2477 str = buf_to_str(fields[field_count].in_value, bits, 16);
2478 free(fields[field_count].out_value);
2479
2480 Jim_ListAppendElement(interp, list, Jim_NewStringObj(interp, str, strlen(str)));
2481 free(str);
2482 field_count++;
2483 }
2484
2485 Jim_SetResult(interp, list);
2486
2487 free(fields);
2488
2489 return JIM_OK;
2490 }
2491
2492
2493 static int Jim_Command_flush_count(Jim_Interp *interp, int argc, Jim_Obj *const *args)
2494 {
2495 Jim_SetResult(interp, Jim_NewIntObj(interp, jtag_get_flush_queue_count()));
2496
2497 return JIM_OK;
2498 }
2499
2500
2501 static int handle_verify_ircapture_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2502 {
2503 if (argc == 1)
2504 {
2505 if (strcmp(args[0], "enable") == 0)
2506 {
2507 jtag_verify_capture_ir = 1;
2508 }
2509 else if (strcmp(args[0], "disable") == 0)
2510 {
2511 jtag_verify_capture_ir = 0;
2512 } else
2513 {
2514 return ERROR_COMMAND_SYNTAX_ERROR;
2515 }
2516 } else if (argc != 0)
2517 {
2518 return ERROR_COMMAND_SYNTAX_ERROR;
2519 }
2520
2521 command_print(cmd_ctx, "verify Capture-IR is %s", (jtag_verify_capture_ir) ? "enabled": "disabled");
2522
2523 return ERROR_OK;
2524 }
2525
2526 static int handle_verify_jtag_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2527 {
2528 if (argc == 1)
2529 {
2530 if (strcmp(args[0], "enable") == 0)
2531 {
2532 jtag_verify = 1;
2533 }
2534 else if (strcmp(args[0], "disable") == 0)
2535 {
2536 jtag_verify = 0;
2537 } else
2538 {
2539 return ERROR_COMMAND_SYNTAX_ERROR;
2540 }
2541 } else if (argc != 0)
2542 {
2543 return ERROR_COMMAND_SYNTAX_ERROR;
2544 }
2545
2546 command_print(cmd_ctx, "verify jtag capture is %s", (jtag_verify) ? "enabled": "disabled");
2547
2548 return ERROR_OK;
2549 }
2550
2551
2552 int jtag_power_dropout(int *dropout)
2553 {
2554 return jtag->power_dropout(dropout);
2555 }
2556
2557 int jtag_srst_asserted(int *srst_asserted)
2558 {
2559 return jtag->srst_asserted(srst_asserted);
2560 }
2561
2562 void jtag_tap_handle_event( jtag_tap_t * tap, enum jtag_tap_event e)
2563 {
2564 jtag_tap_event_action_t * jteap;
2565 int done;
2566
2567 jteap = tap->event_action;
2568
2569 done = 0;
2570 while (jteap) {
2571 if (jteap->event == e) {
2572 done = 1;
2573 LOG_DEBUG( "JTAG tap: %s event: %d (%s) action: %s\n",
2574 tap->dotted_name,
2575 e,
2576 Jim_Nvp_value2name_simple(nvp_jtag_tap_event, e)->name,
2577 Jim_GetString(jteap->body, NULL) );
2578 if (Jim_EvalObj(interp, jteap->body) != JIM_OK) {
2579 Jim_PrintErrorMessage(interp);
2580 }
2581 }
2582
2583 jteap = jteap->next;
2584 }
2585
2586 if (!done) {
2587 LOG_DEBUG( "event %d %s - no action",
2588 e,
2589 Jim_Nvp_value2name_simple( nvp_jtag_tap_event, e)->name);
2590 }
2591 }
2592
2593 static int handle_tms_sequence_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2594 {
2595 if (argc > 1)
2596 return ERROR_COMMAND_SYNTAX_ERROR;
2597
2598 if (argc == 1)
2599 {
2600 bool use_new_table;
2601 if (strcmp(args[0], "short") == 0)
2602 use_new_table = true;
2603 else if (strcmp(args[0], "long") == 0)
2604 use_new_table = false;
2605 else
2606 return ERROR_COMMAND_SYNTAX_ERROR;
2607
2608 tap_use_new_tms_table(use_new_table);
2609 }
2610
2611 command_print(cmd_ctx, "tms sequence is %s",
2612 tap_uses_new_tms_table() ? "short": "long");
2613
2614 return ERROR_OK;
2615 }
2616
2617 /**
2618 * Function jtag_add_statemove
2619 * moves from the current state to the goal \a state. This needs
2620 * to be handled according to the xsvf spec, see the XSTATE command
2621 * description.
2622 */
2623 int jtag_add_statemove(tap_state_t goal_state)
2624 {
2625 int retval = ERROR_OK;
2626
2627 tap_state_t moves[8];
2628 tap_state_t cur_state = cmd_queue_cur_state;
2629 int i;
2630 int tms_bits;
2631 int tms_count;
2632
2633 LOG_DEBUG( "cur_state=%s goal_state=%s",
2634 tap_state_name(cur_state),
2635 tap_state_name(goal_state) );
2636
2637
2638 /* From the XSVF spec, pertaining to XSTATE:
2639
2640 For special states known as stable states (Test-Logic-Reset,
2641 Run-Test/Idle, Pause-DR, Pause- IR), an XSVF interpreter follows
2642 predefined TAP state paths when the starting state is a stable state and
2643 when the XSTATE specifies a new stable state (see the STATE command in
2644 the [Ref 5] for the TAP state paths between stable states). For
2645 non-stable states, XSTATE should specify a state that is only one TAP
2646 state transition distance from the current TAP state to avoid undefined
2647 TAP state paths. A sequence of multiple XSTATE commands can be issued to
2648 transition the TAP through a specific state path.
2649 */
2650
2651 if (goal_state==cur_state )
2652 ; /* nothing to do */
2653
2654 else if( goal_state==TAP_RESET )
2655 {
2656 jtag_add_tlr();
2657 }
2658
2659 else if( tap_is_state_stable(cur_state) && tap_is_state_stable(goal_state) )
2660 {
2661 /* note: unless tms_bits holds a path that agrees with [Ref 5] in above
2662 spec, then this code is not fully conformant to the xsvf spec. This
2663 puts a burden on tap_get_tms_path() function from the xsvf spec.
2664 If in doubt, you should confirm that that burden is being met.
2665 */
2666
2667 tms_bits = tap_get_tms_path(cur_state, goal_state);
2668 tms_count = tap_get_tms_path_len(cur_state, goal_state);
2669
2670 assert( (unsigned) tms_count < DIM(moves) );
2671
2672 for (i=0; i<tms_count; i++, tms_bits>>=1)
2673 {
2674 bool bit = tms_bits & 1;
2675
2676 cur_state = tap_state_transition(cur_state, bit);
2677 moves[i] = cur_state;
2678 }
2679
2680 jtag_add_pathmove(tms_count, moves);
2681 }
2682
2683 /* else state must be immediately reachable in one clock cycle, and does not
2684 need to be a stable state.
2685 */
2686 else if( tap_state_transition(cur_state, true) == goal_state
2687 || tap_state_transition(cur_state, false) == goal_state )
2688 {
2689 /* move a single state */
2690 moves[0] = goal_state;
2691 jtag_add_pathmove( 1, moves );
2692 }
2693
2694 else
2695 {
2696 retval = ERROR_FAIL;
2697 }
2698
2699 return retval;
2700 }
2701
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|+B . . .         |
|Bo. = o S        |
|Oo.+ + =         |
|oB=.* = . o      |
| =+=.+   + E     |
|. .=o   . o      |
+----[SHA256]-----+
2048 SHA256:0Onrb7/PHjpo6iVZ7xQX2riKN83FJ3KGU0TvI0TaFG4 gerrit-code-review@openocd.zylin.com (RSA)