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