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Simplify jtag_add_plain_dr_scan:
[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
603 int retval;
604 retval=interface_jtag_add_tlr();
605 if (retval!=ERROR_OK)
606 jtag_error=retval;
607
608 jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
609 }
610
611 void jtag_add_pathmove(int num_states, const tap_state_t *path)
612 {
613 tap_state_t cur_state = cmd_queue_cur_state;
614 int i;
615 int retval;
616
617 /* the last state has to be a stable state */
618 if (!tap_is_state_stable(path[num_states - 1]))
619 {
620 LOG_ERROR("BUG: TAP path doesn't finish in a stable state");
621 exit(-1);
622 }
623
624 for (i=0; i<num_states; i++)
625 {
626 if (path[i] == TAP_RESET)
627 {
628 LOG_ERROR("BUG: TAP_RESET is not a valid state for pathmove sequences");
629 exit(-1);
630 }
631
632 if ( tap_state_transition(cur_state, true) != path[i]
633 && tap_state_transition(cur_state, false) != path[i])
634 {
635 LOG_ERROR("BUG: %s -> %s isn't a valid TAP transition", tap_state_name(cur_state), tap_state_name(path[i]));
636 exit(-1);
637 }
638 cur_state = path[i];
639 }
640
641 jtag_checks();
642
643 retval = interface_jtag_add_pathmove(num_states, path);
644 cmd_queue_cur_state = path[num_states - 1];
645 if (retval!=ERROR_OK)
646 jtag_error=retval;
647 }
648
649 void jtag_add_runtest(int num_cycles, tap_state_t state)
650 {
651 int retval;
652
653 jtag_prelude(state);
654
655 /* executed by sw or hw fifo */
656 retval=interface_jtag_add_runtest(num_cycles, state);
657 if (retval!=ERROR_OK)
658 jtag_error=retval;
659 }
660
661
662 void jtag_add_clocks( int num_cycles )
663 {
664 int retval;
665
666 if( !tap_is_state_stable(cmd_queue_cur_state) )
667 {
668 LOG_ERROR( "jtag_add_clocks() was called with TAP in non-stable state \"%s\"",
669 tap_state_name(cmd_queue_cur_state) );
670 jtag_error = ERROR_JTAG_NOT_STABLE_STATE;
671 return;
672 }
673
674 if( num_cycles > 0 )
675 {
676 jtag_checks();
677
678 retval = interface_jtag_add_clocks(num_cycles);
679 if (retval != ERROR_OK)
680 jtag_error=retval;
681 }
682 }
683
684 void jtag_add_reset(int req_tlr_or_trst, int req_srst)
685 {
686 int trst_with_tlr = 0;
687 int retval;
688
689 /* FIX!!! there are *many* different cases here. A better
690 * approach is needed for legal combinations of transitions...
691 */
692 if ((jtag_reset_config & RESET_HAS_SRST)&&
693 (jtag_reset_config & RESET_HAS_TRST)&&
694 ((jtag_reset_config & RESET_SRST_PULLS_TRST)==0))
695 {
696 if (((req_tlr_or_trst&&!jtag_trst)||
697 (!req_tlr_or_trst&&jtag_trst))&&
698 ((req_srst&&!jtag_srst)||
699 (!req_srst&&jtag_srst)))
700 {
701 /* FIX!!! srst_pulls_trst allows 1,1 => 0,0 transition.... */
702 //LOG_ERROR("BUG: transition of req_tlr_or_trst and req_srst in the same jtag_add_reset() call is undefined");
703 }
704 }
705
706 /* Make sure that jtag_reset_config allows the requested reset */
707 /* if SRST pulls TRST, we can't fulfill srst == 1 with trst == 0 */
708 if (((jtag_reset_config & RESET_SRST_PULLS_TRST) && (req_srst == 1)) && (!req_tlr_or_trst))
709 {
710 LOG_ERROR("BUG: requested reset would assert trst");
711 jtag_error=ERROR_FAIL;
712 return;
713 }
714
715 /* if TRST pulls SRST, we reset with TAP T-L-R */
716 if (((jtag_reset_config & RESET_TRST_PULLS_SRST) && (req_tlr_or_trst)) && (req_srst == 0))
717 {
718 trst_with_tlr = 1;
719 }
720
721 if (req_srst && !(jtag_reset_config & RESET_HAS_SRST))
722 {
723 LOG_ERROR("BUG: requested SRST assertion, but the current configuration doesn't support this");
724 jtag_error=ERROR_FAIL;
725 return;
726 }
727
728 if (req_tlr_or_trst)
729 {
730 if (!trst_with_tlr && (jtag_reset_config & RESET_HAS_TRST))
731 {
732 jtag_trst = 1;
733 } else
734 {
735 trst_with_tlr = 1;
736 }
737 } else
738 {
739 jtag_trst = 0;
740 }
741
742 jtag_srst = req_srst;
743
744 retval = interface_jtag_add_reset(jtag_trst, jtag_srst);
745 if (retval!=ERROR_OK)
746 {
747 jtag_error=retval;
748 return;
749 }
750 jtag_execute_queue();
751
752 if (jtag_srst)
753 {
754 LOG_DEBUG("SRST line asserted");
755 }
756 else
757 {
758 LOG_DEBUG("SRST line released");
759 if (jtag_nsrst_delay)
760 jtag_add_sleep(jtag_nsrst_delay * 1000);
761 }
762
763 if (trst_with_tlr)
764 {
765 LOG_DEBUG("JTAG reset with RESET instead of TRST");
766 jtag_set_end_state(TAP_RESET);
767 jtag_add_tlr();
768 return;
769 }
770
771 if (jtag_trst)
772 {
773 /* we just asserted nTRST, so we're now in Test-Logic-Reset,
774 * and inform possible listeners about this
775 */
776 LOG_DEBUG("TRST line asserted");
777 tap_set_state(TAP_RESET);
778 jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
779 }
780 else
781 {
782 if (jtag_ntrst_delay)
783 jtag_add_sleep(jtag_ntrst_delay * 1000);
784 }
785 }
786
787 tap_state_t jtag_set_end_state(tap_state_t state)
788 {
789 if ((state == TAP_DRSHIFT)||(state == TAP_IRSHIFT))
790 {
791 LOG_ERROR("BUG: TAP_DRSHIFT/IRSHIFT can't be end state. Calling code should use a larger scan field");
792 }
793
794 if (state!=TAP_INVALID)
795 cmd_queue_end_state = state;
796 return cmd_queue_end_state;
797 }
798
799 tap_state_t jtag_get_end_state(void)
800 {
801 return cmd_queue_end_state;
802 }
803
804 void jtag_add_sleep(u32 us)
805 {
806 keep_alive(); /* we might be running on a very slow JTAG clk */
807 int retval=interface_jtag_add_sleep(us);
808 if (retval!=ERROR_OK)
809 jtag_error=retval;
810 return;
811 }
812
813 int jtag_check_value_inner(u8 *captured, u8 *in_check_value, u8 *in_check_mask, int num_bits)
814 {
815 int retval = ERROR_OK;
816
817 int compare_failed = 0;
818
819 if (in_check_mask)
820 compare_failed = buf_cmp_mask(captured, in_check_value, in_check_mask, num_bits);
821 else
822 compare_failed = buf_cmp(captured, in_check_value, num_bits);
823
824 if (compare_failed){
825 /* An error handler could have caught the failing check
826 * only report a problem when there wasn't a handler, or if the handler
827 * acknowledged the error
828 */
829 /*
830 LOG_WARNING("TAP %s:",
831 jtag_tap_name(field->tap));
832 */
833 if (compare_failed)
834 {
835 char *captured_char = buf_to_str(captured, (num_bits > DEBUG_JTAG_IOZ) ? DEBUG_JTAG_IOZ : num_bits, 16);
836 char *in_check_value_char = buf_to_str(in_check_value, (num_bits > DEBUG_JTAG_IOZ) ? DEBUG_JTAG_IOZ : num_bits, 16);
837
838 if (in_check_mask)
839 {
840 char *in_check_mask_char;
841 in_check_mask_char = buf_to_str(in_check_mask, (num_bits > DEBUG_JTAG_IOZ) ? DEBUG_JTAG_IOZ : num_bits, 16);
842 LOG_WARNING("value captured during scan didn't pass the requested check:");
843 LOG_WARNING("captured: 0x%s check_value: 0x%s check_mask: 0x%s",
844 captured_char, in_check_value_char, in_check_mask_char);
845 free(in_check_mask_char);
846 }
847 else
848 {
849 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);
850 }
851
852 free(captured_char);
853 free(in_check_value_char);
854
855 retval = ERROR_JTAG_QUEUE_FAILED;
856 }
857
858 }
859 return retval;
860 }
861
862 void jtag_check_value_mask(scan_field_t *field, u8 *value, u8 *mask)
863 {
864 assert(field->in_value != NULL);
865
866 if (value==NULL)
867 {
868 /* no checking to do */
869 return;
870 }
871
872 jtag_execute_queue_noclear();
873
874 int retval=jtag_check_value_inner(field->in_value, value, mask, field->num_bits);
875 jtag_set_error(retval);
876 }
877
878
879
880 int default_interface_jtag_execute_queue(void)
881 {
882 if (NULL == jtag)
883 {
884 LOG_ERROR("No JTAG interface configured yet. "
885 "Issue 'init' command in startup scripts "
886 "before communicating with targets.");
887 return ERROR_FAIL;
888 }
889
890 return jtag->execute_queue();
891 }
892
893 void jtag_execute_queue_noclear(void)
894 {
895 jtag_flush_queue_count++;
896 jtag_set_error(interface_jtag_execute_queue());
897 }
898
899 int jtag_get_flush_queue_count(void)
900 {
901 return jtag_flush_queue_count;
902 }
903
904 int jtag_execute_queue(void)
905 {
906 jtag_execute_queue_noclear();
907 return jtag_error_clear();
908 }
909
910 static int jtag_reset_callback(enum jtag_event event, void *priv)
911 {
912 jtag_tap_t *tap = priv;
913
914 LOG_DEBUG("-");
915
916 if (event == JTAG_TRST_ASSERTED)
917 {
918 buf_set_ones(tap->cur_instr, tap->ir_length);
919 tap->bypass = 1;
920 }
921
922 return ERROR_OK;
923 }
924
925 void jtag_sleep(u32 us)
926 {
927 alive_sleep(us/1000);
928 }
929
930 /// maximum number of JTAG devices expected in the chain
931 #define JTAG_MAX_CHAIN_SIZE 20
932
933 #define EXTRACT_MFG(X) (((X) & 0xffe) >> 1)
934 #define EXTRACT_PART(X) (((X) & 0xffff000) >> 12)
935 #define EXTRACT_VER(X) (((X) & 0xf0000000) >> 28)
936
937 static int jtag_examine_chain_execute(u8 *idcode_buffer, unsigned num_idcode)
938 {
939 scan_field_t field = {
940 .tap = NULL,
941 .num_bits = num_idcode * 32,
942 .out_value = idcode_buffer,
943 .in_value = idcode_buffer,
944 };
945
946 // initialize to the end of chain ID value
947 for (unsigned i = 0; i < JTAG_MAX_CHAIN_SIZE; i++)
948 buf_set_u32(idcode_buffer, i * 32, 32, 0x000000FF);
949
950 jtag_add_plain_dr_scan(1, &field, TAP_RESET);
951 return jtag_execute_queue();
952 }
953
954 static bool jtag_examine_chain_check(u8 *idcodes, unsigned count)
955 {
956 u8 zero_check = 0x0;
957 u8 one_check = 0xff;
958
959 for (unsigned i = 0; i < count * 4; i++)
960 {
961 zero_check |= idcodes[i];
962 one_check &= idcodes[i];
963 }
964
965 /* if there wasn't a single non-zero bit or if all bits were one,
966 * the scan is not valid */
967 if (zero_check == 0x00 || one_check == 0xff)
968 {
969 LOG_ERROR("JTAG communication failure: check connection, "
970 "JTAG interface, target power etc.");
971 return false;
972 }
973 return true;
974 }
975
976 static void jtag_examine_chain_display(enum log_levels level, const char *msg,
977 const char *name, u32 idcode)
978 {
979 log_printf_lf(level, __FILE__, __LINE__, __FUNCTION__,
980 "JTAG tap: %s %16.16s: 0x%08x "
981 "(mfg: 0x%3.3x, part: 0x%4.4x, ver: 0x%1.1x)",
982 name, msg, idcode,
983 EXTRACT_MFG(idcode), EXTRACT_PART(idcode), EXTRACT_VER(idcode) );
984 }
985
986 static bool jtag_idcode_is_final(u32 idcode)
987 {
988 return idcode == 0x000000FF || idcode == 0xFFFFFFFF;
989 }
990
991 /**
992 * This helper checks that remaining bits in the examined chain data are
993 * all as expected, but a single JTAG device requires only 64 bits to be
994 * read back correctly. This can help identify and diagnose problems
995 * with the JTAG chain earlier, gives more helpful/explicit error messages.
996 */
997 static void jtag_examine_chain_end(u8 *idcodes, unsigned count, unsigned max)
998 {
999 bool triggered = false;
1000 for ( ; count < max - 31; count += 32)
1001 {
1002 u32 idcode = buf_get_u32(idcodes, count, 32);
1003 // do not trigger the warning if the data looks good
1004 if (!triggered && jtag_idcode_is_final(idcode))
1005 continue;
1006 LOG_WARNING("Unexpected idcode after end of chain: %d 0x%08x",
1007 count, idcode);
1008 triggered = true;
1009 }
1010 }
1011
1012 static bool jtag_examine_chain_match_tap(const struct jtag_tap_s *tap)
1013 {
1014 if (0 == tap->expected_ids_cnt)
1015 {
1016 /// @todo Enable LOG_INFO to ask for reports about unknown TAP IDs.
1017 #if 0
1018 LOG_INFO("Uknown JTAG TAP ID: 0x%08x", tap->idcode)
1019 LOG_INFO("Please report the chip name and reported ID code to the openocd project");
1020 #endif
1021 return true;
1022 }
1023
1024 /* Loop over the expected identification codes and test for a match */
1025 u8 ii;
1026 for (ii = 0; ii < tap->expected_ids_cnt; ii++)
1027 {
1028 if (tap->idcode == tap->expected_ids[ii])
1029 break;
1030 }
1031
1032 /* If none of the expected ids matched, log an error */
1033 if (ii != tap->expected_ids_cnt)
1034 {
1035 LOG_INFO("JTAG Tap/device matched");
1036 return true;
1037 }
1038 jtag_examine_chain_display(LOG_LVL_ERROR, "got",
1039 tap->dotted_name, tap->idcode);
1040 for (ii = 0; ii < tap->expected_ids_cnt; ii++)
1041 {
1042 char msg[32];
1043 snprintf(msg, sizeof(msg), "expected %hhu of %hhu",
1044 ii + 1, tap->expected_ids_cnt);
1045 jtag_examine_chain_display(LOG_LVL_ERROR, msg,
1046 tap->dotted_name, tap->expected_ids[ii]);
1047 }
1048 return false;
1049 }
1050
1051 /* Try to examine chain layout according to IEEE 1149.1 §12
1052 */
1053 static int jtag_examine_chain(void)
1054 {
1055 u8 idcode_buffer[JTAG_MAX_CHAIN_SIZE * 4];
1056 unsigned device_count = 0;
1057
1058 jtag_examine_chain_execute(idcode_buffer, JTAG_MAX_CHAIN_SIZE);
1059
1060 if (!jtag_examine_chain_check(idcode_buffer, JTAG_MAX_CHAIN_SIZE))
1061 return ERROR_JTAG_INIT_FAILED;
1062
1063 /* point at the 1st tap */
1064 jtag_tap_t *tap = jtag_tap_next_enabled(NULL);
1065 if (tap == NULL)
1066 {
1067 LOG_ERROR("JTAG: No taps enabled?");
1068 return ERROR_JTAG_INIT_FAILED;
1069 }
1070
1071 for (unsigned bit_count = 0; bit_count < (JTAG_MAX_CHAIN_SIZE * 32) - 31;)
1072 {
1073 u32 idcode = buf_get_u32(idcode_buffer, bit_count, 32);
1074 if ((idcode & 1) == 0)
1075 {
1076 /* LSB must not be 0, this indicates a device in bypass */
1077 LOG_WARNING("Tap/Device does not have IDCODE");
1078 idcode = 0;
1079
1080 bit_count += 1;
1081 }
1082 else
1083 {
1084 /*
1085 * End of chain (invalid manufacturer ID) some devices, such
1086 * as AVR will output all 1's instead of TDI input value at
1087 * end of chain.
1088 */
1089 if (jtag_idcode_is_final(idcode))
1090 {
1091 jtag_examine_chain_end(idcode_buffer,
1092 bit_count + 32, JTAG_MAX_CHAIN_SIZE * 32);
1093 break;
1094 }
1095
1096 jtag_examine_chain_display(LOG_LVL_INFO, "tap/device found",
1097 tap ? tap->dotted_name : "(not-named)",
1098 idcode);
1099
1100 bit_count += 32;
1101 }
1102 device_count++;
1103 if (!tap)
1104 continue;
1105
1106 tap->idcode = idcode;
1107
1108 // ensure the TAP ID does matches what was expected
1109 if (!jtag_examine_chain_match_tap(tap))
1110 return ERROR_JTAG_INIT_FAILED;
1111
1112 tap = jtag_tap_next_enabled(tap);
1113 }
1114
1115 /* see if number of discovered devices matches configuration */
1116 if (device_count != jtag_tap_count_enabled())
1117 {
1118 LOG_ERROR("number of discovered devices in JTAG chain (%i) "
1119 "does not match (enabled) configuration (%i), total taps: %d",
1120 device_count, jtag_tap_count_enabled(), jtag_tap_count());
1121 LOG_ERROR("check the config file and ensure proper JTAG communication"
1122 " (connections, speed, ...)");
1123 return ERROR_JTAG_INIT_FAILED;
1124 }
1125
1126 return ERROR_OK;
1127 }
1128
1129 static int jtag_validate_chain(void)
1130 {
1131 jtag_tap_t *tap;
1132 int total_ir_length = 0;
1133 u8 *ir_test = NULL;
1134 scan_field_t field;
1135 int chain_pos = 0;
1136
1137 tap = NULL;
1138 total_ir_length = 0;
1139 for(;;){
1140 tap = jtag_tap_next_enabled(tap);
1141 if( tap == NULL ){
1142 break;
1143 }
1144 total_ir_length += tap->ir_length;
1145 }
1146
1147 total_ir_length += 2;
1148 ir_test = malloc(CEIL(total_ir_length, 8));
1149 buf_set_ones(ir_test, total_ir_length);
1150
1151 field.tap = NULL;
1152 field.num_bits = total_ir_length;
1153 field.out_value = ir_test;
1154 field.in_value = ir_test;
1155
1156
1157 jtag_add_plain_ir_scan(1, &field, TAP_RESET);
1158 jtag_execute_queue();
1159
1160 tap = NULL;
1161 chain_pos = 0;
1162 int val;
1163 for(;;){
1164 tap = jtag_tap_next_enabled(tap);
1165 if( tap == NULL ){
1166 break;
1167 }
1168
1169 val = buf_get_u32(ir_test, chain_pos, 2);
1170 if (val != 0x1)
1171 {
1172 char *cbuf = buf_to_str(ir_test, total_ir_length, 16);
1173 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);
1174 free(cbuf);
1175 free(ir_test);
1176 return ERROR_JTAG_INIT_FAILED;
1177 }
1178 chain_pos += tap->ir_length;
1179 }
1180
1181 val = buf_get_u32(ir_test, chain_pos, 2);
1182 if (val != 0x3)
1183 {
1184 char *cbuf = buf_to_str(ir_test, total_ir_length, 16);
1185 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);
1186 free(cbuf);
1187 free(ir_test);
1188 return ERROR_JTAG_INIT_FAILED;
1189 }
1190
1191 free(ir_test);
1192
1193 return ERROR_OK;
1194 }
1195
1196 enum jtag_tap_cfg_param {
1197 JCFG_EVENT
1198 };
1199
1200 static Jim_Nvp nvp_config_opts[] = {
1201 { .name = "-event", .value = JCFG_EVENT },
1202
1203 { .name = NULL, .value = -1 }
1204 };
1205
1206 static int jtag_tap_configure_cmd( Jim_GetOptInfo *goi, jtag_tap_t * tap)
1207 {
1208 Jim_Nvp *n;
1209 Jim_Obj *o;
1210 int e;
1211
1212 /* parse config or cget options */
1213 while (goi->argc > 0) {
1214 Jim_SetEmptyResult (goi->interp);
1215
1216 e = Jim_GetOpt_Nvp(goi, nvp_config_opts, &n);
1217 if (e != JIM_OK) {
1218 Jim_GetOpt_NvpUnknown(goi, nvp_config_opts, 0);
1219 return e;
1220 }
1221
1222 switch (n->value) {
1223 case JCFG_EVENT:
1224 if (goi->argc == 0) {
1225 Jim_WrongNumArgs( goi->interp, goi->argc, goi->argv, "-event ?event-name? ..." );
1226 return JIM_ERR;
1227 }
1228
1229 e = Jim_GetOpt_Nvp( goi, nvp_jtag_tap_event, &n );
1230 if (e != JIM_OK) {
1231 Jim_GetOpt_NvpUnknown(goi, nvp_jtag_tap_event, 1);
1232 return e;
1233 }
1234
1235 if (goi->isconfigure) {
1236 if (goi->argc != 1) {
1237 Jim_WrongNumArgs(goi->interp, goi->argc, goi->argv, "-event ?event-name? ?EVENT-BODY?");
1238 return JIM_ERR;
1239 }
1240 } else {
1241 if (goi->argc != 0) {
1242 Jim_WrongNumArgs(goi->interp, goi->argc, goi->argv, "-event ?event-name?");
1243 return JIM_ERR;
1244 }
1245 }
1246
1247 {
1248 jtag_tap_event_action_t *jteap;
1249
1250 jteap = tap->event_action;
1251 /* replace existing? */
1252 while (jteap) {
1253 if (jteap->event == (enum jtag_tap_event)n->value) {
1254 break;
1255 }
1256 jteap = jteap->next;
1257 }
1258
1259 if (goi->isconfigure) {
1260 if (jteap == NULL) {
1261 /* create new */
1262 jteap = calloc(1, sizeof (*jteap));
1263 }
1264 jteap->event = n->value;
1265 Jim_GetOpt_Obj( goi, &o);
1266 if (jteap->body) {
1267 Jim_DecrRefCount(interp, jteap->body);
1268 }
1269 jteap->body = Jim_DuplicateObj(goi->interp, o);
1270 Jim_IncrRefCount(jteap->body);
1271
1272 /* add to head of event list */
1273 jteap->next = tap->event_action;
1274 tap->event_action = jteap;
1275 Jim_SetEmptyResult(goi->interp);
1276 } else {
1277 /* get */
1278 if (jteap == NULL) {
1279 Jim_SetEmptyResult(goi->interp);
1280 } else {
1281 Jim_SetResult(goi->interp, Jim_DuplicateObj(goi->interp, jteap->body));
1282 }
1283 }
1284 }
1285 /* loop for more */
1286 break;
1287 }
1288 } /* while (goi->argc) */
1289
1290 return JIM_OK;
1291 }
1292
1293
1294 static void jtag_tap_init(jtag_tap_t *tap)
1295 {
1296 assert(0 != tap->ir_length);
1297
1298 tap->expected = malloc(tap->ir_length);
1299 tap->expected_mask = malloc(tap->ir_length);
1300 tap->cur_instr = malloc(tap->ir_length);
1301
1302 buf_set_u32(tap->expected, 0, tap->ir_length, tap->ir_capture_value);
1303 buf_set_u32(tap->expected_mask, 0, tap->ir_length, tap->ir_capture_mask);
1304 buf_set_ones(tap->cur_instr, tap->ir_length);
1305
1306 // place TAP in bypass mode
1307 tap->bypass = 1;
1308 // register the reset callback for the TAP
1309 jtag_register_event_callback(&jtag_reset_callback, tap);
1310
1311 LOG_DEBUG("Created Tap: %s @ abs position %d, "
1312 "irlen %d, capture: 0x%x mask: 0x%x", tap->dotted_name,
1313 tap->abs_chain_position, tap->ir_length,
1314 tap->ir_capture_value, tap->ir_capture_mask);
1315 jtag_tap_add(tap);
1316 }
1317
1318 static void jtag_tap_free(jtag_tap_t *tap)
1319 {
1320 /// @todo is anything missing? no memory leaks please
1321 free((void *)tap->expected_ids);
1322 free((void *)tap->chip);
1323 free((void *)tap->tapname);
1324 free((void *)tap->dotted_name);
1325 free(tap);
1326 }
1327
1328 static int jim_newtap_cmd( Jim_GetOptInfo *goi )
1329 {
1330 jtag_tap_t *pTap;
1331 jim_wide w;
1332 int x;
1333 int e;
1334 int reqbits;
1335 Jim_Nvp *n;
1336 char *cp;
1337 const Jim_Nvp opts[] = {
1338 #define NTAP_OPT_IRLEN 0
1339 { .name = "-irlen" , .value = NTAP_OPT_IRLEN },
1340 #define NTAP_OPT_IRMASK 1
1341 { .name = "-irmask" , .value = NTAP_OPT_IRMASK },
1342 #define NTAP_OPT_IRCAPTURE 2
1343 { .name = "-ircapture" , .value = NTAP_OPT_IRCAPTURE },
1344 #define NTAP_OPT_ENABLED 3
1345 { .name = "-enable" , .value = NTAP_OPT_ENABLED },
1346 #define NTAP_OPT_DISABLED 4
1347 { .name = "-disable" , .value = NTAP_OPT_DISABLED },
1348 #define NTAP_OPT_EXPECTED_ID 5
1349 { .name = "-expected-id" , .value = NTAP_OPT_EXPECTED_ID },
1350 { .name = NULL , .value = -1 },
1351 };
1352
1353 pTap = malloc( sizeof(jtag_tap_t) );
1354 memset( pTap, 0, sizeof(*pTap) );
1355 if( !pTap ){
1356 Jim_SetResult_sprintf( goi->interp, "no memory");
1357 return JIM_ERR;
1358 }
1359 /*
1360 * we expect CHIP + TAP + OPTIONS
1361 * */
1362 if( goi->argc < 3 ){
1363 Jim_SetResult_sprintf(goi->interp, "Missing CHIP TAP OPTIONS ....");
1364 return JIM_ERR;
1365 }
1366 Jim_GetOpt_String( goi, &cp, NULL );
1367 pTap->chip = strdup(cp);
1368
1369 Jim_GetOpt_String( goi, &cp, NULL );
1370 pTap->tapname = strdup(cp);
1371
1372 /* name + dot + name + null */
1373 x = strlen(pTap->chip) + 1 + strlen(pTap->tapname) + 1;
1374 cp = malloc( x );
1375 sprintf( cp, "%s.%s", pTap->chip, pTap->tapname );
1376 pTap->dotted_name = cp;
1377
1378 LOG_DEBUG("Creating New Tap, Chip: %s, Tap: %s, Dotted: %s, %d params",
1379 pTap->chip, pTap->tapname, pTap->dotted_name, goi->argc);
1380
1381 /* default is enabled */
1382 pTap->enabled = 1;
1383
1384 /* deal with options */
1385 #define NTREQ_IRLEN 1
1386 #define NTREQ_IRCAPTURE 2
1387 #define NTREQ_IRMASK 4
1388
1389 /* clear them as we find them */
1390 reqbits = (NTREQ_IRLEN | NTREQ_IRCAPTURE | NTREQ_IRMASK);
1391
1392 while( goi->argc ){
1393 e = Jim_GetOpt_Nvp( goi, opts, &n );
1394 if( e != JIM_OK ){
1395 Jim_GetOpt_NvpUnknown( goi, opts, 0 );
1396 return e;
1397 }
1398 LOG_DEBUG("Processing option: %s", n->name );
1399 switch( n->value ){
1400 case NTAP_OPT_ENABLED:
1401 pTap->enabled = 1;
1402 break;
1403 case NTAP_OPT_DISABLED:
1404 pTap->enabled = 0;
1405 break;
1406 case NTAP_OPT_EXPECTED_ID:
1407 {
1408 u32 *new_expected_ids;
1409
1410 e = Jim_GetOpt_Wide( goi, &w );
1411 if( e != JIM_OK) {
1412 Jim_SetResult_sprintf(goi->interp, "option: %s bad parameter", n->name);
1413 return e;
1414 }
1415
1416 new_expected_ids = malloc(sizeof(u32) * (pTap->expected_ids_cnt + 1));
1417 if (new_expected_ids == NULL) {
1418 Jim_SetResult_sprintf( goi->interp, "no memory");
1419 return JIM_ERR;
1420 }
1421
1422 memcpy(new_expected_ids, pTap->expected_ids, sizeof(u32) * pTap->expected_ids_cnt);
1423
1424 new_expected_ids[pTap->expected_ids_cnt] = w;
1425
1426 free(pTap->expected_ids);
1427 pTap->expected_ids = new_expected_ids;
1428 pTap->expected_ids_cnt++;
1429 break;
1430 }
1431 case NTAP_OPT_IRLEN:
1432 case NTAP_OPT_IRMASK:
1433 case NTAP_OPT_IRCAPTURE:
1434 e = Jim_GetOpt_Wide( goi, &w );
1435 if( e != JIM_OK ){
1436 Jim_SetResult_sprintf( goi->interp, "option: %s bad parameter", n->name );
1437 return e;
1438 }
1439 if( (w < 0) || (w > 0xffff) ){
1440 /* wacky value */
1441 Jim_SetResult_sprintf( goi->interp, "option: %s - wacky value: %d (0x%x)",
1442 n->name, (int)(w), (int)(w));
1443 return JIM_ERR;
1444 }
1445 switch(n->value){
1446 case NTAP_OPT_IRLEN:
1447 pTap->ir_length = w;
1448 reqbits &= (~(NTREQ_IRLEN));
1449 break;
1450 case NTAP_OPT_IRMASK:
1451 pTap->ir_capture_mask = w;
1452 reqbits &= (~(NTREQ_IRMASK));
1453 break;
1454 case NTAP_OPT_IRCAPTURE:
1455 pTap->ir_capture_value = w;
1456 reqbits &= (~(NTREQ_IRCAPTURE));
1457 break;
1458 }
1459 } /* switch(n->value) */
1460 } /* while( goi->argc ) */
1461
1462 /* Did all the required option bits get cleared? */
1463 if (0 == reqbits)
1464 {
1465 jtag_tap_init(pTap);
1466 return ERROR_OK;
1467 }
1468
1469 Jim_SetResult_sprintf(goi->interp,
1470 "newtap: %s missing required parameters",
1471 pTap->dotted_name);
1472 jtag_tap_free(pTap);
1473 return JIM_ERR;
1474 }
1475
1476 static int jim_jtag_command( Jim_Interp *interp, int argc, Jim_Obj *const *argv )
1477 {
1478 Jim_GetOptInfo goi;
1479 int e;
1480 Jim_Nvp *n;
1481 Jim_Obj *o;
1482 struct command_context_s *context;
1483
1484 enum {
1485 JTAG_CMD_INTERFACE,
1486 JTAG_CMD_INIT_RESET,
1487 JTAG_CMD_NEWTAP,
1488 JTAG_CMD_TAPENABLE,
1489 JTAG_CMD_TAPDISABLE,
1490 JTAG_CMD_TAPISENABLED,
1491 JTAG_CMD_CONFIGURE,
1492 JTAG_CMD_CGET
1493 };
1494
1495 const Jim_Nvp jtag_cmds[] = {
1496 { .name = "interface" , .value = JTAG_CMD_INTERFACE },
1497 { .name = "arp_init-reset", .value = JTAG_CMD_INIT_RESET },
1498 { .name = "newtap" , .value = JTAG_CMD_NEWTAP },
1499 { .name = "tapisenabled" , .value = JTAG_CMD_TAPISENABLED },
1500 { .name = "tapenable" , .value = JTAG_CMD_TAPENABLE },
1501 { .name = "tapdisable" , .value = JTAG_CMD_TAPDISABLE },
1502 { .name = "configure" , .value = JTAG_CMD_CONFIGURE },
1503 { .name = "cget" , .value = JTAG_CMD_CGET },
1504
1505 { .name = NULL, .value = -1 },
1506 };
1507
1508 context = Jim_GetAssocData(interp, "context");
1509 /* go past the command */
1510 Jim_GetOpt_Setup( &goi, interp, argc-1, argv+1 );
1511
1512 e = Jim_GetOpt_Nvp( &goi, jtag_cmds, &n );
1513 if( e != JIM_OK ){
1514 Jim_GetOpt_NvpUnknown( &goi, jtag_cmds, 0 );
1515 return e;
1516 }
1517 Jim_SetEmptyResult( goi.interp );
1518 switch( n->value ){
1519 case JTAG_CMD_INTERFACE:
1520 /* return the name of the interface */
1521 /* TCL code might need to know the exact type... */
1522 /* FUTURE: we allow this as a means to "set" the interface. */
1523 if( goi.argc != 0 ){
1524 Jim_WrongNumArgs( goi.interp, 1, goi.argv-1, "(no params)");
1525 return JIM_ERR;
1526 }
1527 Jim_SetResultString( goi.interp, jtag_interface->name, -1 );
1528 return JIM_OK;
1529 case JTAG_CMD_INIT_RESET:
1530 if( goi.argc != 0 ){
1531 Jim_WrongNumArgs( goi.interp, 1, goi.argv-1, "(no params)");
1532 return JIM_ERR;
1533 }
1534 e = jtag_init_reset(context);
1535 if( e != ERROR_OK ){
1536 Jim_SetResult_sprintf( goi.interp, "error: %d", e);
1537 return JIM_ERR;
1538 }
1539 return JIM_OK;
1540 case JTAG_CMD_NEWTAP:
1541 return jim_newtap_cmd( &goi );
1542 break;
1543 case JTAG_CMD_TAPISENABLED:
1544 case JTAG_CMD_TAPENABLE:
1545 case JTAG_CMD_TAPDISABLE:
1546 if( goi.argc != 1 ){
1547 Jim_SetResultString( goi.interp, "Too many parameters",-1 );
1548 return JIM_ERR;
1549 }
1550
1551 {
1552 jtag_tap_t *t;
1553 t = jtag_tap_by_jim_obj( goi.interp, goi.argv[0] );
1554 if( t == NULL ){
1555 return JIM_ERR;
1556 }
1557 switch( n->value ){
1558 case JTAG_CMD_TAPISENABLED:
1559 e = t->enabled;
1560 break;
1561 case JTAG_CMD_TAPENABLE:
1562 jtag_tap_handle_event( t, JTAG_TAP_EVENT_ENABLE);
1563 e = 1;
1564 t->enabled = e;
1565 break;
1566 case JTAG_CMD_TAPDISABLE:
1567 jtag_tap_handle_event( t, JTAG_TAP_EVENT_DISABLE);
1568 e = 0;
1569 t->enabled = e;
1570 break;
1571 }
1572 Jim_SetResult( goi.interp, Jim_NewIntObj( goi.interp, e ) );
1573 return JIM_OK;
1574 }
1575 break;
1576
1577 case JTAG_CMD_CGET:
1578 if( goi.argc < 2 ){
1579 Jim_WrongNumArgs( goi.interp, 0, NULL, "?tap-name? -option ...");
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 = 0;
1593 return jtag_tap_configure_cmd( &goi, t);
1594 }
1595 break;
1596
1597 case JTAG_CMD_CONFIGURE:
1598 if( goi.argc < 3 ){
1599 Jim_WrongNumArgs( goi.interp, 0, NULL, "?tap-name? -option ?VALUE? ...");
1600 return JIM_ERR;
1601 }
1602
1603 {
1604 jtag_tap_t *t;
1605
1606 Jim_GetOpt_Obj(&goi, &o);
1607 t = jtag_tap_by_jim_obj( goi.interp, o );
1608 if( t == NULL ){
1609 return JIM_ERR;
1610 }
1611
1612 goi.isconfigure = 1;
1613 return jtag_tap_configure_cmd( &goi, t);
1614 }
1615 }
1616
1617 return JIM_ERR;
1618 }
1619
1620 int jtag_register_commands(struct command_context_s *cmd_ctx)
1621 {
1622 register_jim( cmd_ctx, "jtag", jim_jtag_command, "perform jtag tap actions");
1623
1624 register_command(cmd_ctx, NULL, "interface", handle_interface_command,
1625 COMMAND_CONFIG, "try to configure interface");
1626 register_command(cmd_ctx, NULL, "jtag_speed", handle_jtag_speed_command,
1627 COMMAND_ANY, "(DEPRECATED) set jtag speed (if supported)");
1628 register_command(cmd_ctx, NULL, "jtag_khz", handle_jtag_khz_command,
1629 COMMAND_ANY, "set maximum jtag speed (if supported); "
1630 "parameter is maximum khz, or 0 for adaptive clocking (RTCK).");
1631 register_command(cmd_ctx, NULL, "jtag_device", handle_jtag_device_command,
1632 COMMAND_CONFIG, "(DEPRECATED) jtag_device <ir_length> <ir_expected> <ir_mask>");
1633 register_command(cmd_ctx, NULL, "reset_config", handle_reset_config_command,
1634 COMMAND_ANY,
1635 "[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]");
1636 register_command(cmd_ctx, NULL, "jtag_nsrst_delay", handle_jtag_nsrst_delay_command,
1637 COMMAND_ANY, "jtag_nsrst_delay <ms> - delay after deasserting srst in ms");
1638 register_command(cmd_ctx, NULL, "jtag_ntrst_delay", handle_jtag_ntrst_delay_command,
1639 COMMAND_ANY, "jtag_ntrst_delay <ms> - delay after deasserting trst in ms");
1640
1641 register_command(cmd_ctx, NULL, "scan_chain", handle_scan_chain_command,
1642 COMMAND_EXEC, "print current scan chain configuration");
1643
1644 register_command(cmd_ctx, NULL, "jtag_reset", handle_jtag_reset_command,
1645 COMMAND_EXEC, "toggle reset lines <trst> <srst>");
1646 register_command(cmd_ctx, NULL, "runtest", handle_runtest_command,
1647 COMMAND_EXEC, "move to Run-Test/Idle, and execute <num_cycles>");
1648 register_command(cmd_ctx, NULL, "irscan", handle_irscan_command,
1649 COMMAND_EXEC, "execute IR scan <device> <instr> [dev2] [instr2] ...");
1650 register_jim(cmd_ctx, "drscan", Jim_Command_drscan, "execute DR scan <device> <num_bits> <value> <num_bits1> <value2> ...");
1651 register_jim(cmd_ctx, "flush_count", Jim_Command_flush_count, "returns number of times the JTAG queue has been flushed");
1652
1653 register_command(cmd_ctx, NULL, "verify_ircapture", handle_verify_ircapture_command,
1654 COMMAND_ANY, "verify value captured during Capture-IR <enable|disable>");
1655 register_command(cmd_ctx, NULL, "verify_jtag", handle_verify_jtag_command,
1656 COMMAND_ANY, "verify value capture <enable|disable>");
1657 register_command(cmd_ctx, NULL, "tms_sequence", handle_tms_sequence_command,
1658 COMMAND_ANY, "choose short(default) or long tms_sequence <short|long>");
1659 return ERROR_OK;
1660 }
1661
1662 int jtag_interface_init(struct command_context_s *cmd_ctx)
1663 {
1664 if (jtag)
1665 return ERROR_OK;
1666
1667 if (!jtag_interface)
1668 {
1669 /* nothing was previously specified by "interface" command */
1670 LOG_ERROR("JTAG interface has to be specified, see \"interface\" command");
1671 return ERROR_JTAG_INVALID_INTERFACE;
1672 }
1673 if(hasKHz)
1674 {
1675 jtag_interface->khz(jtag_get_speed_khz(), &jtag_speed);
1676 hasKHz = false;
1677 }
1678
1679 if (jtag_interface->init() != ERROR_OK)
1680 return ERROR_JTAG_INIT_FAILED;
1681
1682 jtag = jtag_interface;
1683 return ERROR_OK;
1684 }
1685
1686 static int jtag_init_inner(struct command_context_s *cmd_ctx)
1687 {
1688 jtag_tap_t *tap;
1689 int retval;
1690
1691 LOG_DEBUG("Init JTAG chain");
1692
1693 tap = jtag_tap_next_enabled(NULL);
1694 if( tap == NULL ){
1695 LOG_ERROR("There are no enabled taps?");
1696 return ERROR_JTAG_INIT_FAILED;
1697 }
1698
1699 jtag_add_tlr();
1700 if ((retval=jtag_execute_queue())!=ERROR_OK)
1701 return retval;
1702
1703 /* examine chain first, as this could discover the real chain layout */
1704 if (jtag_examine_chain() != ERROR_OK)
1705 {
1706 LOG_ERROR("trying to validate configured JTAG chain anyway...");
1707 }
1708
1709 if (jtag_validate_chain() != ERROR_OK)
1710 {
1711 LOG_WARNING("Could not validate JTAG chain, continuing anyway...");
1712 }
1713
1714 return ERROR_OK;
1715 }
1716
1717 int jtag_interface_quit(void)
1718 {
1719 if (!jtag || !jtag->quit)
1720 return ERROR_OK;
1721
1722 // close the JTAG interface
1723 int result = jtag->quit();
1724 if (ERROR_OK != result)
1725 LOG_ERROR("failed: %d", result);
1726
1727 return ERROR_OK;
1728 }
1729
1730
1731 int jtag_init_reset(struct command_context_s *cmd_ctx)
1732 {
1733 int retval;
1734
1735 if ((retval=jtag_interface_init(cmd_ctx)) != ERROR_OK)
1736 return retval;
1737
1738 LOG_DEBUG("Trying to bring the JTAG controller to life by asserting TRST / RESET");
1739
1740 /* Reset can happen after a power cycle.
1741 *
1742 * Ideally we would only assert TRST or run RESET before the target reset.
1743 *
1744 * However w/srst_pulls_trst, trst is asserted together with the target
1745 * reset whether we want it or not.
1746 *
1747 * NB! Some targets have JTAG circuitry disabled until a
1748 * trst & srst has been asserted.
1749 *
1750 * NB! here we assume nsrst/ntrst delay are sufficient!
1751 *
1752 * NB! order matters!!!! srst *can* disconnect JTAG circuitry
1753 *
1754 */
1755 jtag_add_reset(1, 0); /* RESET or TRST */
1756 if (jtag_reset_config & RESET_HAS_SRST)
1757 {
1758 jtag_add_reset(1, 1);
1759 if ((jtag_reset_config & RESET_SRST_PULLS_TRST)==0)
1760 jtag_add_reset(0, 1);
1761 }
1762 jtag_add_reset(0, 0);
1763 if ((retval = jtag_execute_queue()) != ERROR_OK)
1764 return retval;
1765
1766 /* Check that we can communication on the JTAG chain + eventually we want to
1767 * be able to perform enumeration only after OpenOCD has started
1768 * telnet and GDB server
1769 *
1770 * That would allow users to more easily perform any magic they need to before
1771 * reset happens.
1772 */
1773 return jtag_init_inner(cmd_ctx);
1774 }
1775
1776 int jtag_init(struct command_context_s *cmd_ctx)
1777 {
1778 int retval;
1779 if ((retval=jtag_interface_init(cmd_ctx)) != ERROR_OK)
1780 return retval;
1781 if (jtag_init_inner(cmd_ctx)==ERROR_OK)
1782 {
1783 return ERROR_OK;
1784 }
1785 return jtag_init_reset(cmd_ctx);
1786 }
1787
1788 void jtag_set_speed_khz(unsigned khz)
1789 {
1790 speed_khz = khz;
1791 }
1792 unsigned jtag_get_speed_khz(void)
1793 {
1794 return speed_khz;
1795 }
1796
1797 static int default_khz(int khz, int *jtag_speed)
1798 {
1799 LOG_ERROR("Translation from khz to jtag_speed not implemented");
1800 return ERROR_FAIL;
1801 }
1802
1803 static int default_speed_div(int speed, int *khz)
1804 {
1805 LOG_ERROR("Translation from jtag_speed to khz not implemented");
1806 return ERROR_FAIL;
1807 }
1808
1809 static int default_power_dropout(int *dropout)
1810 {
1811 *dropout=0; /* by default we can't detect power dropout */
1812 return ERROR_OK;
1813 }
1814
1815 static int default_srst_asserted(int *srst_asserted)
1816 {
1817 *srst_asserted=0; /* by default we can't detect srst asserted */
1818 return ERROR_OK;
1819 }
1820
1821 static int handle_interface_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1822 {
1823 int i;
1824 int retval;
1825
1826 /* check whether the interface is already configured */
1827 if (jtag_interface)
1828 {
1829 LOG_WARNING("Interface already configured, ignoring");
1830 return ERROR_OK;
1831 }
1832
1833 /* interface name is a mandatory argument */
1834 if (argc < 1 || args[0][0] == '\0')
1835 {
1836 return ERROR_COMMAND_SYNTAX_ERROR;
1837 }
1838
1839 for (i=0; jtag_interfaces[i]; i++)
1840 {
1841 if (strcmp(args[0], jtag_interfaces[i]->name) == 0)
1842 {
1843 if ((retval = jtag_interfaces[i]->register_commands(cmd_ctx)) != ERROR_OK)
1844 {
1845 return retval;
1846 }
1847
1848 jtag_interface = jtag_interfaces[i];
1849
1850 if (jtag_interface->khz == NULL)
1851 {
1852 jtag_interface->khz = default_khz;
1853 }
1854 if (jtag_interface->speed_div == NULL)
1855 {
1856 jtag_interface->speed_div = default_speed_div;
1857 }
1858 if (jtag_interface->power_dropout == NULL)
1859 {
1860 jtag_interface->power_dropout = default_power_dropout;
1861 }
1862 if (jtag_interface->srst_asserted == NULL)
1863 {
1864 jtag_interface->srst_asserted = default_srst_asserted;
1865 }
1866
1867 return ERROR_OK;
1868 }
1869 }
1870
1871 /* no valid interface was found (i.e. the configuration option,
1872 * didn't match one of the compiled-in interfaces
1873 */
1874 LOG_ERROR("No valid jtag interface found (%s)", args[0]);
1875 LOG_ERROR("compiled-in jtag interfaces:");
1876 for (i = 0; jtag_interfaces[i]; i++)
1877 {
1878 LOG_ERROR("%i: %s", i, jtag_interfaces[i]->name);
1879 }
1880
1881 return ERROR_JTAG_INVALID_INTERFACE;
1882 }
1883
1884 static int handle_jtag_device_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1885 {
1886 int e;
1887 char buf[1024];
1888 Jim_Obj *newargs[ 10 ];
1889 /*
1890 * CONVERT SYNTAX
1891 * argv[-1] = command
1892 * argv[ 0] = ir length
1893 * argv[ 1] = ir capture
1894 * argv[ 2] = ir mask
1895 * argv[ 3] = not actually used by anything but in the docs
1896 */
1897
1898 if( argc < 4 ){
1899 command_print( cmd_ctx, "OLD DEPRECATED SYNTAX: Please use the NEW syntax");
1900 return ERROR_OK;
1901 }
1902 command_print( cmd_ctx, "OLD SYNTAX: DEPRECATED - translating to new syntax");
1903 command_print( cmd_ctx, "jtag newtap CHIP TAP -irlen %s -ircapture %s -irvalue %s",
1904 args[0],
1905 args[1],
1906 args[2] );
1907 command_print( cmd_ctx, "Example: STM32 has 2 taps, the cortexM3(len4) + boundaryscan(len5)");
1908 command_print( cmd_ctx, "jtag newtap stm32 cortexm3 ....., thus creating the tap: \"stm32.cortexm3\"");
1909 command_print( cmd_ctx, "jtag newtap stm32 boundary ....., and the tap: \"stm32.boundary\"");
1910 command_print( cmd_ctx, "And then refer to the taps by the dotted name.");
1911
1912 newargs[0] = Jim_NewStringObj( interp, "jtag", -1 );
1913 newargs[1] = Jim_NewStringObj( interp, "newtap", -1 );
1914 sprintf( buf, "chip%d", jtag_tap_count() );
1915 newargs[2] = Jim_NewStringObj( interp, buf, -1 );
1916 sprintf( buf, "tap%d", jtag_tap_count() );
1917 newargs[3] = Jim_NewStringObj( interp, buf, -1 );
1918 newargs[4] = Jim_NewStringObj( interp, "-irlen", -1 );
1919 newargs[5] = Jim_NewStringObj( interp, args[0], -1 );
1920 newargs[6] = Jim_NewStringObj( interp, "-ircapture", -1 );
1921 newargs[7] = Jim_NewStringObj( interp, args[1], -1 );
1922 newargs[8] = Jim_NewStringObj( interp, "-irmask", -1 );
1923 newargs[9] = Jim_NewStringObj( interp, args[2], -1 );
1924
1925 command_print( cmd_ctx, "NEW COMMAND:");
1926 sprintf( buf, "%s %s %s %s %s %s %s %s %s %s",
1927 Jim_GetString( newargs[0], NULL ),
1928 Jim_GetString( newargs[1], NULL ),
1929 Jim_GetString( newargs[2], NULL ),
1930 Jim_GetString( newargs[3], NULL ),
1931 Jim_GetString( newargs[4], NULL ),
1932 Jim_GetString( newargs[5], NULL ),
1933 Jim_GetString( newargs[6], NULL ),
1934 Jim_GetString( newargs[7], NULL ),
1935 Jim_GetString( newargs[8], NULL ),
1936 Jim_GetString( newargs[9], NULL ) );
1937
1938 e = jim_jtag_command( interp, 10, newargs );
1939 if( e != JIM_OK ){
1940 command_print( cmd_ctx, "%s", Jim_GetString( Jim_GetResult(interp), NULL ) );
1941 }
1942 return e;
1943 }
1944
1945 static int handle_scan_chain_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1946 {
1947 jtag_tap_t *tap;
1948
1949 tap = jtag_all_taps();
1950 command_print(cmd_ctx, " TapName | Enabled | IdCode Expected IrLen IrCap IrMask Instr ");
1951 command_print(cmd_ctx, "---|--------------------|---------|------------|------------|------|------|------|---------");
1952
1953 while( tap ){
1954 u32 expected, expected_mask, cur_instr, ii;
1955 expected = buf_get_u32(tap->expected, 0, tap->ir_length);
1956 expected_mask = buf_get_u32(tap->expected_mask, 0, tap->ir_length);
1957 cur_instr = buf_get_u32(tap->cur_instr, 0, tap->ir_length);
1958
1959 command_print(cmd_ctx,
1960 "%2d | %-18s | %c | 0x%08x | 0x%08x | 0x%02x | 0x%02x | 0x%02x | 0x%02x",
1961 tap->abs_chain_position,
1962 tap->dotted_name,
1963 tap->enabled ? 'Y' : 'n',
1964 tap->idcode,
1965 (tap->expected_ids_cnt > 0 ? tap->expected_ids[0] : 0),
1966 tap->ir_length,
1967 expected,
1968 expected_mask,
1969 cur_instr);
1970
1971 for (ii = 1; ii < tap->expected_ids_cnt; ii++) {
1972 command_print(cmd_ctx, " | | | | 0x%08x | | | | ",
1973 tap->expected_ids[ii]);
1974 }
1975
1976 tap = tap->next_tap;
1977 }
1978
1979 return ERROR_OK;
1980 }
1981
1982 static int handle_reset_config_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1983 {
1984 int new_cfg = 0;
1985 int mask = 0;
1986
1987 if (argc < 1)
1988 return ERROR_COMMAND_SYNTAX_ERROR;
1989
1990 /* Original versions cared about the order of these tokens:
1991 * reset_config signals [combination [trst_type [srst_type]]]
1992 * They also clobbered the previous configuration even on error.
1993 *
1994 * Here we don't care about the order, and only change values
1995 * which have been explicitly specified.
1996 */
1997 for (; argc; argc--, args++) {
1998 int tmp = 0;
1999 int m;
2000
2001 /* signals */
2002 m = RESET_HAS_TRST | RESET_HAS_SRST;
2003 if (strcmp(*args, "none") == 0)
2004 tmp = RESET_NONE;
2005 else if (strcmp(*args, "trst_only") == 0)
2006 tmp = RESET_HAS_TRST;
2007 else if (strcmp(*args, "srst_only") == 0)
2008 tmp = RESET_HAS_SRST;
2009 else if (strcmp(*args, "trst_and_srst") == 0)
2010 tmp = RESET_HAS_TRST | RESET_HAS_SRST;
2011 else
2012 m = 0;
2013 if (mask & m) {
2014 LOG_ERROR("extra reset_config %s spec (%s)",
2015 "signal", *args);
2016 return ERROR_INVALID_ARGUMENTS;
2017 }
2018 if (m)
2019 goto next;
2020
2021 /* combination (options for broken wiring) */
2022 m = RESET_SRST_PULLS_TRST | RESET_TRST_PULLS_SRST;
2023 if (strcmp(*args, "separate") == 0)
2024 /* separate reset lines - default */;
2025 else if (strcmp(*args, "srst_pulls_trst") == 0)
2026 tmp |= RESET_SRST_PULLS_TRST;
2027 else if (strcmp(*args, "trst_pulls_srst") == 0)
2028 tmp |= RESET_TRST_PULLS_SRST;
2029 else if (strcmp(*args, "combined") == 0)
2030 tmp |= RESET_SRST_PULLS_TRST | RESET_TRST_PULLS_SRST;
2031 else
2032 m = 0;
2033 if (mask & m) {
2034 LOG_ERROR("extra reset_config %s spec (%s)",
2035 "combination", *args);
2036 return ERROR_INVALID_ARGUMENTS;
2037 }
2038 if (m)
2039 goto next;
2040
2041 /* trst_type (NOP without HAS_TRST) */
2042 m = RESET_TRST_OPEN_DRAIN;
2043 if (strcmp(*args, "trst_open_drain") == 0)
2044 tmp |= RESET_TRST_OPEN_DRAIN;
2045 else if (strcmp(*args, "trst_push_pull") == 0)
2046 /* push/pull from adapter - default */;
2047 else
2048 m = 0;
2049 if (mask & m) {
2050 LOG_ERROR("extra reset_config %s spec (%s)",
2051 "trst_type", *args);
2052 return ERROR_INVALID_ARGUMENTS;
2053 }
2054 if (m)
2055 goto next;
2056
2057 /* srst_type (NOP without HAS_SRST) */
2058 m |= RESET_SRST_PUSH_PULL;
2059 if (strcmp(*args, "srst_push_pull") == 0)
2060 tmp |= RESET_SRST_PUSH_PULL;
2061 else if (strcmp(*args, "srst_open_drain") == 0)
2062 /* open drain from adapter - default */;
2063 else
2064 m = 0;
2065 if (mask & m) {
2066 LOG_ERROR("extra reset_config %s spec (%s)",
2067 "srst_type", *args);
2068 return ERROR_INVALID_ARGUMENTS;
2069 }
2070 if (m)
2071 goto next;
2072
2073 /* caller provided nonsense; fail */
2074 LOG_ERROR("unknown reset_config flag (%s)", *args);
2075 return ERROR_INVALID_ARGUMENTS;
2076
2077 next:
2078 /* Remember the bits which were specified (mask)
2079 * and their new values (new_cfg).
2080 */
2081 mask |= m;
2082 new_cfg |= tmp;
2083 }
2084
2085 /* clear previous values of those bits, save new values */
2086 jtag_reset_config &= ~mask;
2087 jtag_reset_config |= new_cfg;
2088
2089 return ERROR_OK;
2090 }
2091
2092 static int handle_jtag_nsrst_delay_command(struct command_context_s *cmd_ctx,
2093 char *cmd, char **args, int argc)
2094 {
2095 if (argc > 1)
2096 return ERROR_COMMAND_SYNTAX_ERROR;
2097 if (argc == 1)
2098 jtag_set_nsrst_delay(strtoul(args[0], NULL, 0));
2099 command_print(cmd_ctx, "jtag_nsrst_delay: %u", jtag_get_nsrst_delay());
2100 return ERROR_OK;
2101 }
2102
2103 static int handle_jtag_ntrst_delay_command(struct command_context_s *cmd_ctx,
2104 char *cmd, char **args, int argc)
2105 {
2106 if (argc > 1)
2107 return ERROR_COMMAND_SYNTAX_ERROR;
2108 if (argc == 1)
2109 jtag_set_ntrst_delay(strtoul(args[0], NULL, 0));
2110 command_print(cmd_ctx, "jtag_ntrst_delay: %u", jtag_get_ntrst_delay());
2111 return ERROR_OK;
2112 }
2113
2114 static int handle_jtag_speed_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2115 {
2116 int retval = ERROR_OK;
2117
2118 if (argc > 1)
2119 return ERROR_COMMAND_SYNTAX_ERROR;
2120 if (argc == 1)
2121 {
2122 LOG_DEBUG("handle jtag speed");
2123
2124 int cur_speed = 0;
2125 cur_speed = jtag_speed = strtoul(args[0], NULL, 0);
2126
2127 /* this command can be called during CONFIG,
2128 * in which case jtag isn't initialized */
2129 if (jtag)
2130 retval = jtag->speed(cur_speed);
2131 }
2132 command_print(cmd_ctx, "jtag_speed: %d", jtag_speed);
2133
2134 return retval;
2135 }
2136
2137 static int handle_jtag_khz_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2138 {
2139 if (argc > 1)
2140 return ERROR_COMMAND_SYNTAX_ERROR;
2141
2142 int retval = ERROR_OK;
2143 int cur_speed = 0;
2144 if (argc == 1)
2145 {
2146 LOG_DEBUG("handle jtag khz");
2147
2148 jtag_set_speed_khz(strtoul(args[0], NULL, 0));
2149 if (jtag != NULL)
2150 {
2151 LOG_DEBUG("have interface set up");
2152 int speed_div1;
2153 retval = jtag->khz(jtag_get_speed_khz(), &speed_div1);
2154 if (ERROR_OK != retval)
2155 {
2156 jtag_set_speed_khz(0);
2157 return retval;
2158 }
2159 cur_speed = jtag_speed = speed_div1;
2160
2161 retval = jtag->speed(cur_speed);
2162 }
2163 else
2164 hasKHz = true;
2165 }
2166
2167 cur_speed = jtag_get_speed_khz();
2168 if (jtag != NULL)
2169 {
2170 retval = jtag->speed_div(jtag_speed, &cur_speed);
2171 if (ERROR_OK != retval)
2172 return retval;
2173 }
2174
2175 if (cur_speed)
2176 command_print(cmd_ctx, "%d kHz", cur_speed);
2177 else
2178 command_print(cmd_ctx, "RCLK - adaptive");
2179 return retval;
2180
2181 }
2182
2183 static int handle_jtag_reset_command(struct command_context_s *cmd_ctx,
2184 char *cmd, char **args, int argc)
2185 {
2186 if (argc != 2)
2187 return ERROR_COMMAND_SYNTAX_ERROR;
2188
2189 int trst = -1;
2190 if (args[0][0] == '1')
2191 trst = 1;
2192 else if (args[0][0] == '0')
2193 trst = 0;
2194 else
2195 return ERROR_COMMAND_SYNTAX_ERROR;
2196
2197 int srst = -1;
2198 if (args[1][0] == '1')
2199 srst = 1;
2200 else if (args[1][0] == '0')
2201 srst = 0;
2202 else
2203 return ERROR_COMMAND_SYNTAX_ERROR;
2204
2205 if (jtag_interface_init(cmd_ctx) != ERROR_OK)
2206 return ERROR_JTAG_INIT_FAILED;
2207
2208 jtag_add_reset(trst, srst);
2209 jtag_execute_queue();
2210
2211 return ERROR_OK;
2212 }
2213
2214 static int handle_runtest_command(struct command_context_s *cmd_ctx,
2215 char *cmd, char **args, int argc)
2216 {
2217 if (argc != 1)
2218 return ERROR_COMMAND_SYNTAX_ERROR;
2219
2220 jtag_add_runtest(strtol(args[0], NULL, 0), jtag_get_end_state());
2221 jtag_execute_queue();
2222
2223 return ERROR_OK;
2224 }
2225
2226 /*
2227 * For "irscan" or "drscan" commands, the "end" (really, "next") state
2228 * should be stable ... and *NOT* a shift state, otherwise free-running
2229 * jtag clocks could change the values latched by the update state.
2230 */
2231 static bool scan_is_safe(tap_state_t state)
2232 {
2233 switch (state)
2234 {
2235 case TAP_RESET:
2236 case TAP_IDLE:
2237 case TAP_DRPAUSE:
2238 case TAP_IRPAUSE:
2239 return true;
2240 default:
2241 return false;
2242 }
2243 }
2244
2245
2246 static int handle_irscan_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2247 {
2248 int i;
2249 scan_field_t *fields;
2250 jtag_tap_t *tap;
2251 tap_state_t endstate;
2252
2253 if ((argc < 2) || (argc % 2))
2254 {
2255 return ERROR_COMMAND_SYNTAX_ERROR;
2256 }
2257
2258 /* optional "-endstate" "statename" at the end of the arguments,
2259 * so that e.g. IRPAUSE can let us load the data register before
2260 * entering RUN/IDLE to execute the instruction we load here.
2261 */
2262 endstate = TAP_IDLE;
2263
2264 if( argc >= 4 ){
2265 /* have at least one pair of numbers. */
2266 /* is last pair the magic text? */
2267 if( 0 == strcmp( "-endstate", args[ argc - 2 ] ) ){
2268 const char *cpA;
2269 const char *cpS;
2270 cpA = args[ argc-1 ];
2271 for( endstate = 0 ; endstate < TAP_NUM_STATES ; endstate++ ){
2272 cpS = tap_state_name( endstate );
2273 if( 0 == strcmp( cpA, cpS ) ){
2274 break;
2275 }
2276 }
2277 if( endstate >= TAP_NUM_STATES ){
2278 return ERROR_COMMAND_SYNTAX_ERROR;
2279 } else {
2280 if (!scan_is_safe(endstate))
2281 LOG_WARNING("irscan with unsafe "
2282 "endstate \"%s\"", cpA);
2283 /* found - remove the last 2 args */
2284 argc -= 2;
2285 }
2286 }
2287 }
2288
2289 int num_fields = argc / 2;
2290
2291 fields = malloc(sizeof(scan_field_t) * num_fields);
2292
2293 for (i = 0; i < num_fields; i++)
2294 {
2295 tap = jtag_tap_by_string( args[i*2] );
2296 if (tap==NULL)
2297 {
2298 command_print( cmd_ctx, "Tap: %s unknown", args[i*2] );
2299 return ERROR_FAIL;
2300 }
2301 int field_size = tap->ir_length;
2302 fields[i].tap = tap;
2303 fields[i].num_bits = field_size;
2304 fields[i].out_value = malloc(CEIL(field_size, 8));
2305 buf_set_u32(fields[i].out_value, 0, field_size, strtoul(args[i*2+1], NULL, 0));
2306 fields[i].in_value = NULL;
2307 }
2308
2309 /* did we have an endstate? */
2310 jtag_add_ir_scan(num_fields, fields, endstate);
2311
2312 int retval=jtag_execute_queue();
2313
2314 for (i = 0; i < num_fields; i++)
2315 free(fields[i].out_value);
2316
2317 free (fields);
2318
2319 return retval;
2320 }
2321
2322 static int Jim_Command_drscan(Jim_Interp *interp, int argc, Jim_Obj *const *args)
2323 {
2324 int retval;
2325 scan_field_t *fields;
2326 int num_fields;
2327 int field_count = 0;
2328 int i, e;
2329 jtag_tap_t *tap;
2330 tap_state_t endstate;
2331
2332 /* args[1] = device
2333 * args[2] = num_bits
2334 * args[3] = hex string
2335 * ... repeat num bits and hex string ...
2336 *
2337 * .. optionally:
2338 * args[N-2] = "-endstate"
2339 * args[N-1] = statename
2340 */
2341 if ((argc < 4) || ((argc % 2)!=0))
2342 {
2343 Jim_WrongNumArgs(interp, 1, args, "wrong arguments");
2344 return JIM_ERR;
2345 }
2346
2347 endstate = TAP_IDLE;
2348
2349 /* validate arguments as numbers */
2350 e = JIM_OK;
2351 for (i = 2; i < argc; i+=2)
2352 {
2353 long bits;
2354 const char *cp;
2355
2356 e = Jim_GetLong(interp, args[i], &bits);
2357 /* If valid - try next arg */
2358 if( e == JIM_OK ){
2359 continue;
2360 }
2361
2362 /* Not valid.. are we at the end? */
2363 if ( ((i+2) != argc) ){
2364 /* nope, then error */
2365 return e;
2366 }
2367
2368 /* it could be: "-endstate FOO"
2369 * e.g. DRPAUSE so we can issue more instructions
2370 * before entering RUN/IDLE and executing them.
2371 */
2372
2373 /* get arg as a string. */
2374 cp = Jim_GetString( args[i], NULL );
2375 /* is it the magic? */
2376 if( 0 == strcmp( "-endstate", cp ) ){
2377 /* is the statename valid? */
2378 cp = Jim_GetString( args[i+1], NULL );
2379
2380 /* see if it is a valid state name */
2381 endstate = tap_state_by_name(cp);
2382 if( endstate < 0 ){
2383 /* update the error message */
2384 Jim_SetResult_sprintf(interp,"endstate: %s invalid", cp );
2385 } else {
2386 if (!scan_is_safe(endstate))
2387 LOG_WARNING("drscan with unsafe "
2388 "endstate \"%s\"", cp);
2389
2390 /* valid - so clear the error */
2391 e = JIM_OK;
2392 /* and remove the last 2 args */
2393 argc -= 2;
2394 }
2395 }
2396
2397 /* Still an error? */
2398 if( e != JIM_OK ){
2399 return e; /* too bad */
2400 }
2401 } /* validate args */
2402
2403 tap = jtag_tap_by_jim_obj( interp, args[1] );
2404 if( tap == NULL ){
2405 return JIM_ERR;
2406 }
2407
2408 num_fields=(argc-2)/2;
2409 fields = malloc(sizeof(scan_field_t) * num_fields);
2410 for (i = 2; i < argc; i+=2)
2411 {
2412 long bits;
2413 int len;
2414 const char *str;
2415
2416 Jim_GetLong(interp, args[i], &bits);
2417 str = Jim_GetString(args[i+1], &len);
2418
2419 fields[field_count].tap = tap;
2420 fields[field_count].num_bits = bits;
2421 fields[field_count].out_value = malloc(CEIL(bits, 8));
2422 str_to_buf(str, len, fields[field_count].out_value, bits, 0);
2423 fields[field_count].in_value = fields[field_count].out_value;
2424 field_count++;
2425 }
2426
2427 jtag_add_dr_scan(num_fields, fields, endstate);
2428
2429 retval = jtag_execute_queue();
2430 if (retval != ERROR_OK)
2431 {
2432 Jim_SetResultString(interp, "drscan: jtag execute failed",-1);
2433 return JIM_ERR;
2434 }
2435
2436 field_count=0;
2437 Jim_Obj *list = Jim_NewListObj(interp, NULL, 0);
2438 for (i = 2; i < argc; i+=2)
2439 {
2440 long bits;
2441 char *str;
2442
2443 Jim_GetLong(interp, args[i], &bits);
2444 str = buf_to_str(fields[field_count].in_value, bits, 16);
2445 free(fields[field_count].out_value);
2446
2447 Jim_ListAppendElement(interp, list, Jim_NewStringObj(interp, str, strlen(str)));
2448 free(str);
2449 field_count++;
2450 }
2451
2452 Jim_SetResult(interp, list);
2453
2454 free(fields);
2455
2456 return JIM_OK;
2457 }
2458
2459
2460 static int Jim_Command_flush_count(Jim_Interp *interp, int argc, Jim_Obj *const *args)
2461 {
2462 Jim_SetResult(interp, Jim_NewIntObj(interp, jtag_get_flush_queue_count()));
2463
2464 return JIM_OK;
2465 }
2466
2467
2468 static int handle_verify_ircapture_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2469 {
2470 if (argc == 1)
2471 {
2472 if (strcmp(args[0], "enable") == 0)
2473 {
2474 jtag_verify_capture_ir = 1;
2475 }
2476 else if (strcmp(args[0], "disable") == 0)
2477 {
2478 jtag_verify_capture_ir = 0;
2479 } else
2480 {
2481 return ERROR_COMMAND_SYNTAX_ERROR;
2482 }
2483 } else if (argc != 0)
2484 {
2485 return ERROR_COMMAND_SYNTAX_ERROR;
2486 }
2487
2488 command_print(cmd_ctx, "verify Capture-IR is %s", (jtag_verify_capture_ir) ? "enabled": "disabled");
2489
2490 return ERROR_OK;
2491 }
2492
2493 void jtag_set_verify(bool enable)
2494 {
2495 jtag_verify = enable;
2496 }
2497
2498 bool jtag_will_verify()
2499 {
2500 return jtag_verify;
2501 }
2502
2503 static int handle_verify_jtag_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2504 {
2505 if (argc > 1)
2506 return ERROR_COMMAND_SYNTAX_ERROR;
2507
2508 if (argc == 1)
2509 {
2510 if (strcmp(args[0], "enable") == 0)
2511 jtag_set_verify(true);
2512 else if (strcmp(args[0], "disable") == 0)
2513 jtag_set_verify(false);
2514 else
2515 return ERROR_COMMAND_SYNTAX_ERROR;
2516 }
2517
2518 const char *status = jtag_will_verify() ? "enabled": "disabled";
2519 command_print(cmd_ctx, "verify jtag capture is %s", status);
2520
2521 return ERROR_OK;
2522 }
2523
2524
2525 int jtag_power_dropout(int *dropout)
2526 {
2527 return jtag->power_dropout(dropout);
2528 }
2529
2530 int jtag_srst_asserted(int *srst_asserted)
2531 {
2532 return jtag->srst_asserted(srst_asserted);
2533 }
2534
2535 void jtag_tap_handle_event( jtag_tap_t * tap, enum jtag_tap_event e)
2536 {
2537 jtag_tap_event_action_t * jteap;
2538 int done;
2539
2540 jteap = tap->event_action;
2541
2542 done = 0;
2543 while (jteap) {
2544 if (jteap->event == e) {
2545 done = 1;
2546 LOG_DEBUG( "JTAG tap: %s event: %d (%s) action: %s\n",
2547 tap->dotted_name,
2548 e,
2549 Jim_Nvp_value2name_simple(nvp_jtag_tap_event, e)->name,
2550 Jim_GetString(jteap->body, NULL) );
2551 if (Jim_EvalObj(interp, jteap->body) != JIM_OK) {
2552 Jim_PrintErrorMessage(interp);
2553 }
2554 }
2555
2556 jteap = jteap->next;
2557 }
2558
2559 if (!done) {
2560 LOG_DEBUG( "event %d %s - no action",
2561 e,
2562 Jim_Nvp_value2name_simple( nvp_jtag_tap_event, e)->name);
2563 }
2564 }
2565
2566 static int handle_tms_sequence_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2567 {
2568 if (argc > 1)
2569 return ERROR_COMMAND_SYNTAX_ERROR;
2570
2571 if (argc == 1)
2572 {
2573 bool use_new_table;
2574 if (strcmp(args[0], "short") == 0)
2575 use_new_table = true;
2576 else if (strcmp(args[0], "long") == 0)
2577 use_new_table = false;
2578 else
2579 return ERROR_COMMAND_SYNTAX_ERROR;
2580
2581 tap_use_new_tms_table(use_new_table);
2582 }
2583
2584 command_print(cmd_ctx, "tms sequence is %s",
2585 tap_uses_new_tms_table() ? "short": "long");
2586
2587 return ERROR_OK;
2588 }
2589
2590 /**
2591 * Function jtag_add_statemove
2592 * moves from the current state to the goal \a state. This needs
2593 * to be handled according to the xsvf spec, see the XSTATE command
2594 * description.
2595 */
2596 int jtag_add_statemove(tap_state_t goal_state)
2597 {
2598 int retval = ERROR_OK;
2599
2600 tap_state_t moves[8];
2601 tap_state_t cur_state = cmd_queue_cur_state;
2602 int i;
2603 int tms_bits;
2604 int tms_count;
2605
2606 LOG_DEBUG( "cur_state=%s goal_state=%s",
2607 tap_state_name(cur_state),
2608 tap_state_name(goal_state) );
2609
2610
2611 /* From the XSVF spec, pertaining to XSTATE:
2612
2613 For special states known as stable states (Test-Logic-Reset,
2614 Run-Test/Idle, Pause-DR, Pause- IR), an XSVF interpreter follows
2615 predefined TAP state paths when the starting state is a stable state and
2616 when the XSTATE specifies a new stable state (see the STATE command in
2617 the [Ref 5] for the TAP state paths between stable states). For
2618 non-stable states, XSTATE should specify a state that is only one TAP
2619 state transition distance from the current TAP state to avoid undefined
2620 TAP state paths. A sequence of multiple XSTATE commands can be issued to
2621 transition the TAP through a specific state path.
2622 */
2623
2624 if (goal_state==cur_state )
2625 ; /* nothing to do */
2626
2627 else if( goal_state==TAP_RESET )
2628 {
2629 jtag_add_tlr();
2630 }
2631
2632 else if( tap_is_state_stable(cur_state) && tap_is_state_stable(goal_state) )
2633 {
2634 /* note: unless tms_bits holds a path that agrees with [Ref 5] in above
2635 spec, then this code is not fully conformant to the xsvf spec. This
2636 puts a burden on tap_get_tms_path() function from the xsvf spec.
2637 If in doubt, you should confirm that that burden is being met.
2638 */
2639
2640 tms_bits = tap_get_tms_path(cur_state, goal_state);
2641 tms_count = tap_get_tms_path_len(cur_state, goal_state);
2642
2643 assert( (unsigned) tms_count < DIM(moves) );
2644
2645 for (i=0; i<tms_count; i++, tms_bits>>=1)
2646 {
2647 bool bit = tms_bits & 1;
2648
2649 cur_state = tap_state_transition(cur_state, bit);
2650 moves[i] = cur_state;
2651 }
2652
2653 jtag_add_pathmove(tms_count, moves);
2654 }
2655
2656 /* else state must be immediately reachable in one clock cycle, and does not
2657 need to be a stable state.
2658 */
2659 else if( tap_state_transition(cur_state, true) == goal_state
2660 || tap_state_transition(cur_state, false) == goal_state )
2661 {
2662 /* move a single state */
2663 moves[0] = goal_state;
2664 jtag_add_pathmove( 1, moves );
2665 }
2666
2667 else
2668 {
2669 retval = ERROR_FAIL;
2670 }
2671
2672 return retval;
2673 }
2674
2675 void jtag_set_nsrst_delay(unsigned delay)
2676 {
2677 jtag_nsrst_delay = delay;
2678 }
2679 unsigned jtag_get_nsrst_delay(void)
2680 {
2681 return jtag_nsrst_delay;
2682 }
2683 void jtag_set_ntrst_delay(unsigned delay)
2684 {
2685 jtag_ntrst_delay = delay;
2686 }
2687 unsigned jtag_get_ntrst_delay(void)
2688 {
2689 return jtag_ntrst_delay;
2690 }
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