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