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Continue clean-up of JTAG driver interface:
[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 #define INCLUDE_JTAG_MINIDRIVER_H
32 #define INCLUDE_JTAG_INTERFACE_H
33 #include "jtag.h"
34
35 #ifdef HAVE_STRINGS_H
36 #include <strings.h>
37 #endif
38
39
40 int jtag_flush_queue_count; /* count # of flushes for profiling / debugging purposes */
41
42 static void jtag_add_scan_check(void (*jtag_add_scan)(int in_num_fields, const scan_field_t *in_fields, tap_state_t state),
43 int in_num_fields, scan_field_t *in_fields, tap_state_t state);
44
45 /* note that this is not marked as static as it must be available from outside jtag.c for those
46 that implement the jtag_xxx() minidriver layer
47 */
48 int jtag_error=ERROR_OK;
49
50 typedef struct cmd_queue_page_s
51 {
52 void *address;
53 size_t used;
54 struct cmd_queue_page_s *next;
55 } cmd_queue_page_t;
56
57 #define CMD_QUEUE_PAGE_SIZE (1024 * 1024)
58 static cmd_queue_page_t *cmd_queue_pages = NULL;
59
60 char* jtag_event_strings[] =
61 {
62 "JTAG controller reset (RESET or TRST)"
63 };
64
65 const Jim_Nvp nvp_jtag_tap_event[] = {
66 { .value = JTAG_TAP_EVENT_ENABLE, .name = "tap-enable" },
67 { .value = JTAG_TAP_EVENT_DISABLE, .name = "tap-disable" },
68
69 { .name = NULL, .value = -1 }
70 };
71
72 int jtag_trst = 0;
73 int jtag_srst = 0;
74
75 jtag_command_t *jtag_command_queue = NULL;
76 static jtag_command_t **next_command_pointer = &jtag_command_queue;
77 static jtag_tap_t *jtag_all_taps = NULL;
78
79 enum reset_types jtag_reset_config = RESET_NONE;
80 tap_state_t cmd_queue_end_state = TAP_RESET;
81 tap_state_t cmd_queue_cur_state = TAP_RESET;
82
83 int jtag_verify_capture_ir = 1;
84 int jtag_verify = 1;
85
86 /* how long the OpenOCD should wait before attempting JTAG communication after reset lines deasserted (in ms) */
87 static int jtag_nsrst_delay = 0; /* default to no nSRST delay */
88 static int jtag_ntrst_delay = 0; /* default to no nTRST delay */
89
90 /* maximum number of JTAG devices expected in the chain
91 */
92 #define JTAG_MAX_CHAIN_SIZE 20
93
94 /* callbacks to inform high-level handlers about JTAG state changes */
95 jtag_event_callback_t *jtag_event_callbacks;
96
97 /* speed in kHz*/
98 static int speed_khz = 0;
99 /* flag if the kHz speed was defined */
100 static int hasKHz = 0;
101
102 /* jtag interfaces (parport, FTDI-USB, TI-USB, ...)
103 */
104
105 #if BUILD_ECOSBOARD == 1
106 extern jtag_interface_t zy1000_interface;
107 #endif
108
109 #if BUILD_PARPORT == 1
110 extern jtag_interface_t parport_interface;
111 #endif
112
113 #if BUILD_DUMMY == 1
114 extern jtag_interface_t dummy_interface;
115 #endif
116
117 #if BUILD_FT2232_FTD2XX == 1
118 extern jtag_interface_t ft2232_interface;
119 #endif
120
121 #if BUILD_FT2232_LIBFTDI == 1
122 extern jtag_interface_t ft2232_interface;
123 #endif
124
125 #if BUILD_AMTJTAGACCEL == 1
126 extern jtag_interface_t amt_jtagaccel_interface;
127 #endif
128
129 #if BUILD_EP93XX == 1
130 extern jtag_interface_t ep93xx_interface;
131 #endif
132
133 #if BUILD_AT91RM9200 == 1
134 extern jtag_interface_t at91rm9200_interface;
135 #endif
136
137 #if BUILD_GW16012 == 1
138 extern jtag_interface_t gw16012_interface;
139 #endif
140
141 #if BUILD_PRESTO_LIBFTDI == 1 || BUILD_PRESTO_FTD2XX == 1
142 extern jtag_interface_t presto_interface;
143 #endif
144
145 #if BUILD_USBPROG == 1
146 extern jtag_interface_t usbprog_interface;
147 #endif
148
149 #if BUILD_JLINK == 1
150 extern jtag_interface_t jlink_interface;
151 #endif
152
153 #if BUILD_VSLLINK == 1
154 extern jtag_interface_t vsllink_interface;
155 #endif
156
157 #if BUILD_RLINK == 1
158 extern jtag_interface_t rlink_interface;
159 #endif
160
161 #if BUILD_ARMJTAGEW == 1
162 extern jtag_interface_t armjtagew_interface;
163 #endif
164
165 jtag_interface_t *jtag_interfaces[] = {
166 #if BUILD_ECOSBOARD == 1
167 &zy1000_interface,
168 #endif
169 #if BUILD_PARPORT == 1
170 &parport_interface,
171 #endif
172 #if BUILD_DUMMY == 1
173 &dummy_interface,
174 #endif
175 #if BUILD_FT2232_FTD2XX == 1
176 &ft2232_interface,
177 #endif
178 #if BUILD_FT2232_LIBFTDI == 1
179 &ft2232_interface,
180 #endif
181 #if BUILD_AMTJTAGACCEL == 1
182 &amt_jtagaccel_interface,
183 #endif
184 #if BUILD_EP93XX == 1
185 &ep93xx_interface,
186 #endif
187 #if BUILD_AT91RM9200 == 1
188 &at91rm9200_interface,
189 #endif
190 #if BUILD_GW16012 == 1
191 &gw16012_interface,
192 #endif
193 #if BUILD_PRESTO_LIBFTDI == 1 || BUILD_PRESTO_FTD2XX == 1
194 &presto_interface,
195 #endif
196 #if BUILD_USBPROG == 1
197 &usbprog_interface,
198 #endif
199 #if BUILD_JLINK == 1
200 &jlink_interface,
201 #endif
202 #if BUILD_VSLLINK == 1
203 &vsllink_interface,
204 #endif
205 #if BUILD_RLINK == 1
206 &rlink_interface,
207 #endif
208 #if BUILD_ARMJTAGEW == 1
209 &armjtagew_interface,
210 #endif
211 NULL,
212 };
213
214 struct jtag_interface_s *jtag = NULL;
215
216 /* configuration */
217 static jtag_interface_t *jtag_interface = NULL;
218 int jtag_speed = 0;
219
220 /* forward declarations */
221 //void jtag_add_pathmove(int num_states, tap_state_t *path);
222 //void jtag_add_runtest(int num_cycles, tap_state_t endstate);
223 //void jtag_add_end_state(tap_state_t endstate);
224 //void jtag_add_sleep(u32 us);
225 //int jtag_execute_queue(void);
226 static tap_state_t tap_state_by_name(const char *name);
227
228 /* jtag commands */
229 static int handle_interface_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
230 static int handle_jtag_speed_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
231 static int handle_jtag_khz_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
232 static int handle_jtag_device_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
233 static int handle_reset_config_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
234 static int handle_jtag_nsrst_delay_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
235 static int handle_jtag_ntrst_delay_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
236
237 static int handle_scan_chain_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
238
239 static int handle_endstate_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
240 static int handle_jtag_reset_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
241 static int handle_runtest_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
242 static int handle_irscan_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
243 static int Jim_Command_drscan(Jim_Interp *interp, int argc, Jim_Obj *const *argv);
244 static int Jim_Command_flush_count(Jim_Interp *interp, int argc, Jim_Obj *const *args);
245
246 static int handle_verify_ircapture_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
247 static int handle_verify_jtag_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
248 static int handle_tms_sequence_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
249
250 jtag_tap_t *jtag_AllTaps(void)
251 {
252 return jtag_all_taps;
253 };
254
255 int jtag_NumTotalTaps(void)
256 {
257 jtag_tap_t *t;
258 int n;
259
260 n = 0;
261 t = jtag_AllTaps();
262 while(t){
263 n++;
264 t = t->next_tap;
265 }
266 return n;
267 }
268
269 int jtag_NumEnabledTaps(void)
270 {
271 jtag_tap_t *t;
272 int n;
273
274 n = 0;
275 t = jtag_AllTaps();
276 while(t){
277 if( t->enabled ){
278 n++;
279 }
280 t = t->next_tap;
281 }
282 return n;
283 }
284
285 jtag_tap_t *jtag_TapByString( const char *s )
286 {
287 jtag_tap_t *t;
288 char *cp;
289
290 t = jtag_AllTaps();
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_TapByAbsPosition(n);
307 }
308 }
309 return t;
310 }
311
312 jtag_tap_t * jtag_TapByJimObj( 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_TapByString( 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_TapByAbsPosition( int n )
332 {
333 int orig_n;
334 jtag_tap_t *t;
335
336 orig_n = n;
337 t = jtag_AllTaps();
338
339 while( t && (n > 0)) {
340 n--;
341 t = t->next_tap;
342 }
343 return t;
344 }
345
346 int jtag_register_event_callback(int (*callback)(enum jtag_event event, void *priv), void *priv)
347 {
348 jtag_event_callback_t **callbacks_p = &jtag_event_callbacks;
349
350 if (callback == NULL)
351 {
352 return ERROR_INVALID_ARGUMENTS;
353 }
354
355 if (*callbacks_p)
356 {
357 while ((*callbacks_p)->next)
358 callbacks_p = &((*callbacks_p)->next);
359 callbacks_p = &((*callbacks_p)->next);
360 }
361
362 (*callbacks_p) = malloc(sizeof(jtag_event_callback_t));
363 (*callbacks_p)->callback = callback;
364 (*callbacks_p)->priv = priv;
365 (*callbacks_p)->next = NULL;
366
367 return ERROR_OK;
368 }
369
370 int jtag_unregister_event_callback(int (*callback)(enum jtag_event event, void *priv))
371 {
372 jtag_event_callback_t **callbacks_p = &jtag_event_callbacks;
373
374 if (callback == NULL)
375 {
376 return ERROR_INVALID_ARGUMENTS;
377 }
378
379 while (*callbacks_p)
380 {
381 jtag_event_callback_t **next = &((*callbacks_p)->next);
382 if ((*callbacks_p)->callback == callback)
383 {
384 free(*callbacks_p);
385 *callbacks_p = *next;
386 }
387 callbacks_p = next;
388 }
389
390 return ERROR_OK;
391 }
392
393 int jtag_call_event_callbacks(enum jtag_event event)
394 {
395 jtag_event_callback_t *callback = jtag_event_callbacks;
396
397 LOG_DEBUG("jtag event: %s", jtag_event_strings[event]);
398
399 while (callback)
400 {
401 callback->callback(event, callback->priv);
402 callback = callback->next;
403 }
404
405 return ERROR_OK;
406 }
407
408 void jtag_queue_command(jtag_command_t * cmd)
409 {
410 // this command goes on the end, so ensure the queue terminates
411 cmd->next = NULL;
412
413 jtag_command_t **last_cmd = next_command_pointer;
414 assert(NULL != last_cmd);
415 assert(NULL == *last_cmd);
416 *last_cmd = cmd;
417
418 // store location where the next command pointer will be stored
419 next_command_pointer = &cmd->next;
420 }
421
422 void* cmd_queue_alloc(size_t size)
423 {
424 cmd_queue_page_t **p_page = &cmd_queue_pages;
425 int offset;
426 u8 *t;
427
428 /*
429 * WARNING:
430 * We align/round the *SIZE* per below
431 * so that all pointers returned by
432 * this function are reasonably well
433 * aligned.
434 *
435 * If we did not, then an "odd-length" request would cause the
436 * *next* allocation to be at an *odd* address, and because
437 * this function has the same type of api as malloc() - we
438 * must also return pointers that have the same type of
439 * alignment.
440 *
441 * What I do not/have is a reasonable portable means
442 * to align by...
443 *
444 * The solution here, is based on these suggestions.
445 * http://gcc.gnu.org/ml/gcc-help/2008-12/msg00041.html
446 *
447 */
448 union worse_case_align {
449 int i;
450 long l;
451 float f;
452 void *v;
453 };
454 #define ALIGN_SIZE (sizeof(union worse_case_align))
455
456 /* The alignment process. */
457 size = (size + ALIGN_SIZE -1) & (~(ALIGN_SIZE-1));
458 /* Done... */
459
460 if (*p_page)
461 {
462 while ((*p_page)->next)
463 p_page = &((*p_page)->next);
464 if (CMD_QUEUE_PAGE_SIZE - (*p_page)->used < size)
465 p_page = &((*p_page)->next);
466 }
467
468 if (!*p_page)
469 {
470 *p_page = malloc(sizeof(cmd_queue_page_t));
471 (*p_page)->used = 0;
472 (*p_page)->address = malloc(CMD_QUEUE_PAGE_SIZE);
473 (*p_page)->next = NULL;
474 }
475
476 offset = (*p_page)->used;
477 (*p_page)->used += size;
478
479 t=(u8 *)((*p_page)->address);
480 return t + offset;
481 }
482
483 void cmd_queue_free(void)
484 {
485 cmd_queue_page_t *page = cmd_queue_pages;
486
487 while (page)
488 {
489 cmd_queue_page_t *last = page;
490 free(page->address);
491 page = page->next;
492 free(last);
493 }
494
495 cmd_queue_pages = NULL;
496 }
497
498 void jtag_command_queue_reset(void)
499 {
500 cmd_queue_free();
501
502 jtag_command_queue = NULL;
503 next_command_pointer = &jtag_command_queue;
504 }
505
506 static void jtag_prelude1(void)
507 {
508 if (jtag_trst == 1)
509 {
510 LOG_WARNING("JTAG command queued, while TRST is low (TAP in reset)");
511 jtag_error=ERROR_JTAG_TRST_ASSERTED;
512 return;
513 }
514
515 if (cmd_queue_end_state == TAP_RESET)
516 jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
517 }
518
519 static void jtag_prelude(tap_state_t state)
520 {
521 jtag_prelude1();
522
523 if (state != TAP_INVALID)
524 jtag_add_end_state(state);
525
526 cmd_queue_cur_state = cmd_queue_end_state;
527 }
528
529 void jtag_add_ir_scan_noverify(int in_num_fields, const scan_field_t *in_fields, tap_state_t state)
530 {
531 int retval;
532 jtag_prelude(state);
533
534 retval=interface_jtag_add_ir_scan(in_num_fields, in_fields, cmd_queue_end_state);
535 if (retval!=ERROR_OK)
536 jtag_error=retval;
537
538 }
539
540
541 /**
542 * Generate an IR SCAN with a list of scan fields with one entry for each enabled TAP.
543 *
544 * If the input field list contains an instruction value for a TAP then that is used
545 * otherwise the TAP is set to bypass.
546 *
547 * TAPs for which no fields are passed are marked as bypassed for subsequent DR SCANs.
548 *
549 */
550 void jtag_add_ir_scan(int in_num_fields, scan_field_t *in_fields, tap_state_t state)
551 {
552 if (jtag_verify&&jtag_verify_capture_ir)
553 {
554 /* 8 x 32 bit id's is enough for all invocations */
555
556 for (int j = 0; j < in_num_fields; j++)
557 {
558 /* if we are to run a verification of the ir scan, we need to get the input back.
559 * We may have to allocate space if the caller didn't ask for the input back.
560 */
561 in_fields[j].check_value=in_fields[j].tap->expected;
562 in_fields[j].check_mask=in_fields[j].tap->expected_mask;
563 }
564 jtag_add_scan_check(jtag_add_ir_scan_noverify, in_num_fields, in_fields, state);
565 } else
566 {
567 jtag_add_ir_scan_noverify(in_num_fields, in_fields, state);
568 }
569 }
570
571 /**
572 * Duplicate the scan fields passed into the function into an IR SCAN command
573 *
574 * This function assumes that the caller handles extra fields for bypassed TAPs
575 *
576 */
577 void jtag_add_plain_ir_scan(int in_num_fields, const scan_field_t *in_fields, tap_state_t state)
578 {
579 int retval;
580
581 jtag_prelude(state);
582
583 retval=interface_jtag_add_plain_ir_scan(in_num_fields, in_fields, cmd_queue_end_state);
584 if (retval!=ERROR_OK)
585 jtag_error=retval;
586 }
587
588
589
590 int jtag_check_value_inner(u8 *captured, u8 *in_check_value, u8 *in_check_mask, int num_bits);
591
592 static int jtag_check_value_mask_callback(u8 *in, jtag_callback_data_t data1, jtag_callback_data_t data2, jtag_callback_data_t data3)
593 {
594 return jtag_check_value_inner(in, (u8 *)data1, (u8 *)data2, (int)data3);
595 }
596
597 #ifdef HAVE_JTAG_MINIDRIVER_H
598 void interface_jtag_add_scan_check_alloc(scan_field_t *field)
599 {
600 /* We're executing this synchronously, so try to use local storage. */
601 if (field->num_bits > 32)
602 {
603 unsigned num_bytes = TAP_SCAN_BYTES(field->num_bits);
604 field->in_value = (u8 *)malloc(num_bytes);
605 field->allocated = 1;
606 }
607 else
608 field->in_value = field->intmp;
609 }
610 #else
611 void interface_jtag_add_scan_check_alloc(scan_field_t *field)
612 {
613 unsigned num_bytes = TAP_SCAN_BYTES(field->num_bits);
614 field->in_value = (u8 *)cmd_queue_alloc(num_bytes);
615 }
616 #endif
617
618 static void jtag_add_scan_check(void (*jtag_add_scan)(int in_num_fields, const scan_field_t *in_fields, tap_state_t state),
619 int in_num_fields, scan_field_t *in_fields, tap_state_t state)
620 {
621 for (int i = 0; i < in_num_fields; i++)
622 {
623 struct scan_field_s *field = &in_fields[i];
624 field->allocated = 0;
625 field->modified = 0;
626 if (field->check_value || field->in_value)
627 continue;
628 interface_jtag_add_scan_check_alloc(field);
629 field->modified = 1;
630 }
631
632 jtag_add_scan(in_num_fields, in_fields, state);
633
634 for (int i = 0; i < in_num_fields; i++)
635 {
636 if ((in_fields[i].check_value != NULL) && (in_fields[i].in_value != NULL))
637 {
638 /* this is synchronous for a minidriver */
639 jtag_add_callback4(jtag_check_value_mask_callback, in_fields[i].in_value,
640 (jtag_callback_data_t)in_fields[i].check_value,
641 (jtag_callback_data_t)in_fields[i].check_mask,
642 (jtag_callback_data_t)in_fields[i].num_bits);
643 }
644 if (in_fields[i].allocated)
645 {
646 free(in_fields[i].in_value);
647 }
648 if (in_fields[i].modified)
649 {
650 in_fields[i].in_value = NULL;
651 }
652 }
653 }
654
655 void jtag_add_dr_scan_check(int in_num_fields, scan_field_t *in_fields, tap_state_t state)
656 {
657 if (jtag_verify)
658 {
659 jtag_add_scan_check(jtag_add_dr_scan, in_num_fields, in_fields, state);
660 } else
661 {
662 jtag_add_dr_scan(in_num_fields, in_fields, state);
663 }
664 }
665
666
667 /**
668 * Generate a DR SCAN using the fields passed to the function
669 *
670 * For not bypassed TAPs the function checks in_fields and uses fields specified there.
671 * For bypassed TAPs the function generates a dummy 1bit field.
672 *
673 * The bypass status of TAPs is set by jtag_add_ir_scan().
674 *
675 */
676 void jtag_add_dr_scan(int in_num_fields, const scan_field_t *in_fields, tap_state_t state)
677 {
678 int retval;
679
680 jtag_prelude(state);
681
682 retval=interface_jtag_add_dr_scan(in_num_fields, in_fields, cmd_queue_end_state);
683 if (retval!=ERROR_OK)
684 jtag_error=retval;
685 }
686
687
688
689 /**
690 * Duplicate the scan fields passed into the function into a DR SCAN command
691 *
692 * This function assumes that the caller handles extra fields for bypassed TAPs
693 *
694 */
695 void jtag_add_plain_dr_scan(int in_num_fields, const scan_field_t *in_fields, tap_state_t state)
696 {
697 int retval;
698
699 jtag_prelude(state);
700
701 retval=interface_jtag_add_plain_dr_scan(in_num_fields, in_fields, cmd_queue_end_state);
702 if (retval!=ERROR_OK)
703 jtag_error=retval;
704 }
705
706
707
708 void jtag_add_tlr(void)
709 {
710 jtag_prelude(TAP_RESET);
711
712 int retval;
713 retval=interface_jtag_add_tlr();
714 if (retval!=ERROR_OK)
715 jtag_error=retval;
716 }
717
718 void jtag_add_pathmove(int num_states, const tap_state_t *path)
719 {
720 tap_state_t cur_state = cmd_queue_cur_state;
721 int i;
722 int retval;
723
724 /* the last state has to be a stable state */
725 if (!tap_is_state_stable(path[num_states - 1]))
726 {
727 LOG_ERROR("BUG: TAP path doesn't finish in a stable state");
728 exit(-1);
729 }
730
731 for (i=0; i<num_states; i++)
732 {
733 if (path[i] == TAP_RESET)
734 {
735 LOG_ERROR("BUG: TAP_RESET is not a valid state for pathmove sequences");
736 exit(-1);
737 }
738
739 if ( tap_state_transition(cur_state, true) != path[i]
740 && tap_state_transition(cur_state, false) != path[i])
741 {
742 LOG_ERROR("BUG: %s -> %s isn't a valid TAP transition", tap_state_name(cur_state), tap_state_name(path[i]));
743 exit(-1);
744 }
745 cur_state = path[i];
746 }
747
748 jtag_prelude1();
749
750 retval = interface_jtag_add_pathmove(num_states, path);
751 cmd_queue_cur_state = path[num_states - 1];
752 if (retval!=ERROR_OK)
753 jtag_error=retval;
754 }
755
756 void jtag_add_runtest(int num_cycles, tap_state_t state)
757 {
758 int retval;
759
760 jtag_prelude(state);
761
762 /* executed by sw or hw fifo */
763 retval=interface_jtag_add_runtest(num_cycles, cmd_queue_end_state);
764 if (retval!=ERROR_OK)
765 jtag_error=retval;
766 }
767
768
769 void jtag_add_clocks( int num_cycles )
770 {
771 int retval;
772
773 if( !tap_is_state_stable(cmd_queue_cur_state) )
774 {
775 LOG_ERROR( "jtag_add_clocks() was called with TAP in non-stable state \"%s\"",
776 tap_state_name(cmd_queue_cur_state) );
777 jtag_error = ERROR_JTAG_NOT_STABLE_STATE;
778 return;
779 }
780
781 if( num_cycles > 0 )
782 {
783 jtag_prelude1();
784
785 retval = interface_jtag_add_clocks(num_cycles);
786 if (retval != ERROR_OK)
787 jtag_error=retval;
788 }
789 }
790
791 void jtag_add_reset(int req_tlr_or_trst, int req_srst)
792 {
793 int trst_with_tlr = 0;
794 int retval;
795
796 /* FIX!!! there are *many* different cases here. A better
797 * approach is needed for legal combinations of transitions...
798 */
799 if ((jtag_reset_config & RESET_HAS_SRST)&&
800 (jtag_reset_config & RESET_HAS_TRST)&&
801 ((jtag_reset_config & RESET_SRST_PULLS_TRST)==0))
802 {
803 if (((req_tlr_or_trst&&!jtag_trst)||
804 (!req_tlr_or_trst&&jtag_trst))&&
805 ((req_srst&&!jtag_srst)||
806 (!req_srst&&jtag_srst)))
807 {
808 /* FIX!!! srst_pulls_trst allows 1,1 => 0,0 transition.... */
809 //LOG_ERROR("BUG: transition of req_tlr_or_trst and req_srst in the same jtag_add_reset() call is undefined");
810 }
811 }
812
813 /* Make sure that jtag_reset_config allows the requested reset */
814 /* if SRST pulls TRST, we can't fulfill srst == 1 with trst == 0 */
815 if (((jtag_reset_config & RESET_SRST_PULLS_TRST) && (req_srst == 1)) && (!req_tlr_or_trst))
816 {
817 LOG_ERROR("BUG: requested reset would assert trst");
818 jtag_error=ERROR_FAIL;
819 return;
820 }
821
822 /* if TRST pulls SRST, we reset with TAP T-L-R */
823 if (((jtag_reset_config & RESET_TRST_PULLS_SRST) && (req_tlr_or_trst)) && (req_srst == 0))
824 {
825 trst_with_tlr = 1;
826 }
827
828 if (req_srst && !(jtag_reset_config & RESET_HAS_SRST))
829 {
830 LOG_ERROR("BUG: requested SRST assertion, but the current configuration doesn't support this");
831 jtag_error=ERROR_FAIL;
832 return;
833 }
834
835 if (req_tlr_or_trst)
836 {
837 if (!trst_with_tlr && (jtag_reset_config & RESET_HAS_TRST))
838 {
839 jtag_trst = 1;
840 } else
841 {
842 trst_with_tlr = 1;
843 }
844 } else
845 {
846 jtag_trst = 0;
847 }
848
849 jtag_srst = req_srst;
850
851 retval = interface_jtag_add_reset(jtag_trst, jtag_srst);
852 if (retval!=ERROR_OK)
853 {
854 jtag_error=retval;
855 return;
856 }
857 jtag_execute_queue();
858
859 if (jtag_srst)
860 {
861 LOG_DEBUG("SRST line asserted");
862 }
863 else
864 {
865 LOG_DEBUG("SRST line released");
866 if (jtag_nsrst_delay)
867 jtag_add_sleep(jtag_nsrst_delay * 1000);
868 }
869
870 if (trst_with_tlr)
871 {
872 LOG_DEBUG("JTAG reset with RESET instead of TRST");
873 jtag_add_end_state(TAP_RESET);
874 jtag_add_tlr();
875 jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
876 return;
877 }
878
879 if (jtag_trst)
880 {
881 /* we just asserted nTRST, so we're now in Test-Logic-Reset,
882 * and inform possible listeners about this
883 */
884 LOG_DEBUG("TRST line asserted");
885 tap_set_state(TAP_RESET);
886 jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
887 }
888 else
889 {
890 if (jtag_ntrst_delay)
891 jtag_add_sleep(jtag_ntrst_delay * 1000);
892 }
893 }
894
895 void jtag_add_end_state(tap_state_t state)
896 {
897 cmd_queue_end_state = state;
898 if ((cmd_queue_end_state == TAP_DRSHIFT)||(cmd_queue_end_state == TAP_IRSHIFT))
899 {
900 LOG_ERROR("BUG: TAP_DRSHIFT/IRSHIFT can't be end state. Calling code should use a larger scan field");
901 }
902 }
903
904 void jtag_add_sleep(u32 us)
905 {
906 keep_alive(); /* we might be running on a very slow JTAG clk */
907 int retval=interface_jtag_add_sleep(us);
908 if (retval!=ERROR_OK)
909 jtag_error=retval;
910 return;
911 }
912
913 int jtag_scan_size(const scan_command_t *cmd)
914 {
915 int bit_count = 0;
916 int i;
917
918 /* count bits in scan command */
919 for (i = 0; i < cmd->num_fields; i++)
920 {
921 bit_count += cmd->fields[i].num_bits;
922 }
923
924 return bit_count;
925 }
926
927 int jtag_build_buffer(const scan_command_t *cmd, u8 **buffer)
928 {
929 int bit_count = 0;
930 int i;
931
932 bit_count = jtag_scan_size(cmd);
933 *buffer = calloc(1,CEIL(bit_count, 8));
934
935 bit_count = 0;
936
937 #ifdef _DEBUG_JTAG_IO_
938 LOG_DEBUG("%s num_fields: %i", cmd->ir_scan ? "IRSCAN" : "DRSCAN", cmd->num_fields);
939 #endif
940
941 for (i = 0; i < cmd->num_fields; i++)
942 {
943 if (cmd->fields[i].out_value)
944 {
945 #ifdef _DEBUG_JTAG_IO_
946 char* char_buf = buf_to_str(cmd->fields[i].out_value, (cmd->fields[i].num_bits > DEBUG_JTAG_IOZ) ? DEBUG_JTAG_IOZ : cmd->fields[i].num_bits, 16);
947 #endif
948 buf_set_buf(cmd->fields[i].out_value, 0, *buffer, bit_count, cmd->fields[i].num_bits);
949 #ifdef _DEBUG_JTAG_IO_
950 LOG_DEBUG("fields[%i].out_value[%i]: 0x%s", i, cmd->fields[i].num_bits, char_buf);
951 free(char_buf);
952 #endif
953 }
954 else
955 {
956 #ifdef _DEBUG_JTAG_IO_
957 LOG_DEBUG("fields[%i].out_value[%i]: NULL", i, cmd->fields[i].num_bits);
958 #endif
959 }
960
961 bit_count += cmd->fields[i].num_bits;
962 }
963
964 #ifdef _DEBUG_JTAG_IO_
965 //LOG_DEBUG("bit_count totalling: %i", bit_count );
966 #endif
967
968 return bit_count;
969 }
970
971 int jtag_read_buffer(u8 *buffer, const scan_command_t *cmd)
972 {
973 int i;
974 int bit_count = 0;
975 int retval;
976
977 /* we return ERROR_OK, unless a check fails, or a handler reports a problem */
978 retval = ERROR_OK;
979
980 for (i = 0; i < cmd->num_fields; i++)
981 {
982 /* if neither in_value nor in_handler
983 * are specified we don't have to examine this field
984 */
985 if (cmd->fields[i].in_value)
986 {
987 int num_bits = cmd->fields[i].num_bits;
988 u8 *captured = buf_set_buf(buffer, bit_count, malloc(CEIL(num_bits, 8)), 0, num_bits);
989
990 #ifdef _DEBUG_JTAG_IO_
991 char *char_buf = buf_to_str(captured, (num_bits > DEBUG_JTAG_IOZ) ? DEBUG_JTAG_IOZ : num_bits, 16);
992 LOG_DEBUG("fields[%i].in_value[%i]: 0x%s", i, num_bits, char_buf);
993 free(char_buf);
994 #endif
995
996 if (cmd->fields[i].in_value)
997 {
998 buf_cpy(captured, cmd->fields[i].in_value, num_bits);
999 }
1000
1001 free(captured);
1002 }
1003 bit_count += cmd->fields[i].num_bits;
1004 }
1005
1006 return retval;
1007 }
1008
1009 static const char *jtag_tap_name(const jtag_tap_t *tap)
1010 {
1011 return (tap == NULL) ? "(unknown)" : tap->dotted_name;
1012 }
1013
1014 int jtag_check_value_inner(u8 *captured, u8 *in_check_value, u8 *in_check_mask, int num_bits)
1015 {
1016 int retval = ERROR_OK;
1017
1018 int compare_failed = 0;
1019
1020 if (in_check_mask)
1021 compare_failed = buf_cmp_mask(captured, in_check_value, in_check_mask, num_bits);
1022 else
1023 compare_failed = buf_cmp(captured, in_check_value, num_bits);
1024
1025 if (compare_failed){
1026 /* An error handler could have caught the failing check
1027 * only report a problem when there wasn't a handler, or if the handler
1028 * acknowledged the error
1029 */
1030 /*
1031 LOG_WARNING("TAP %s:",
1032 jtag_tap_name(field->tap));
1033 */
1034 if (compare_failed)
1035 {
1036 char *captured_char = buf_to_str(captured, (num_bits > DEBUG_JTAG_IOZ) ? DEBUG_JTAG_IOZ : num_bits, 16);
1037 char *in_check_value_char = buf_to_str(in_check_value, (num_bits > DEBUG_JTAG_IOZ) ? DEBUG_JTAG_IOZ : num_bits, 16);
1038
1039 if (in_check_mask)
1040 {
1041 char *in_check_mask_char;
1042 in_check_mask_char = buf_to_str(in_check_mask, (num_bits > DEBUG_JTAG_IOZ) ? DEBUG_JTAG_IOZ : num_bits, 16);
1043 LOG_WARNING("value captured during scan didn't pass the requested check:");
1044 LOG_WARNING("captured: 0x%s check_value: 0x%s check_mask: 0x%s",
1045 captured_char, in_check_value_char, in_check_mask_char);
1046 free(in_check_mask_char);
1047 }
1048 else
1049 {
1050 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);
1051 }
1052
1053 free(captured_char);
1054 free(in_check_value_char);
1055
1056 retval = ERROR_JTAG_QUEUE_FAILED;
1057 }
1058
1059 }
1060 return retval;
1061 }
1062
1063 void jtag_check_value_mask(scan_field_t *field, u8 *value, u8 *mask)
1064 {
1065 assert(field->in_value != NULL);
1066
1067 if (value==NULL)
1068 {
1069 /* no checking to do */
1070 return;
1071 }
1072
1073 jtag_execute_queue_noclear();
1074
1075 int retval=jtag_check_value_inner(field->in_value, value, mask, field->num_bits);
1076 jtag_set_error(retval);
1077 }
1078
1079
1080
1081 enum scan_type jtag_scan_type(const scan_command_t *cmd)
1082 {
1083 int i;
1084 int type = 0;
1085
1086 for (i = 0; i < cmd->num_fields; i++)
1087 {
1088 if (cmd->fields[i].in_value)
1089 type |= SCAN_IN;
1090 if (cmd->fields[i].out_value)
1091 type |= SCAN_OUT;
1092 }
1093
1094 return type;
1095 }
1096
1097 int default_interface_jtag_execute_queue(void)
1098 {
1099 if (NULL == jtag)
1100 {
1101 LOG_ERROR("No JTAG interface configured yet. "
1102 "Issue 'init' command in startup scripts "
1103 "before communicating with targets.");
1104 return ERROR_FAIL;
1105 }
1106
1107 return jtag->execute_queue();
1108 }
1109
1110 void jtag_execute_queue_noclear(void)
1111 {
1112 /* each flush can take as much as 1-2ms on high bandwidth low latency interfaces.
1113 * E.g. a JTAG over TCP/IP or USB....
1114 */
1115 jtag_flush_queue_count++;
1116
1117 int retval=interface_jtag_execute_queue();
1118 /* we keep the first error */
1119 if ((jtag_error==ERROR_OK)&&(retval!=ERROR_OK))
1120 {
1121 jtag_error=retval;
1122 }
1123 }
1124
1125 int jtag_execute_queue(void)
1126 {
1127 int retval;
1128 jtag_execute_queue_noclear();
1129 retval=jtag_error;
1130 jtag_error=ERROR_OK;
1131 return retval;
1132 }
1133
1134 int jtag_reset_callback(enum jtag_event event, void *priv)
1135 {
1136 jtag_tap_t *tap = priv;
1137
1138 LOG_DEBUG("-");
1139
1140 if (event == JTAG_TRST_ASSERTED)
1141 {
1142 buf_set_ones(tap->cur_instr, tap->ir_length);
1143 tap->bypass = 1;
1144 }
1145
1146 return ERROR_OK;
1147 }
1148
1149 void jtag_sleep(u32 us)
1150 {
1151 alive_sleep(us/1000);
1152 }
1153
1154 /* Try to examine chain layout according to IEEE 1149.1 §12
1155 */
1156 int jtag_examine_chain(void)
1157 {
1158 jtag_tap_t *tap;
1159 scan_field_t field;
1160 u8 idcode_buffer[JTAG_MAX_CHAIN_SIZE * 4];
1161 int i;
1162 int bit_count;
1163 int device_count = 0;
1164 u8 zero_check = 0x0;
1165 u8 one_check = 0xff;
1166
1167 field.tap = NULL;
1168 field.num_bits = sizeof(idcode_buffer) * 8;
1169 field.out_value = idcode_buffer;
1170
1171 field.in_value = idcode_buffer;
1172
1173
1174
1175
1176 for (i = 0; i < JTAG_MAX_CHAIN_SIZE; i++)
1177 {
1178 buf_set_u32(idcode_buffer, i * 32, 32, 0x000000FF);
1179 }
1180
1181 jtag_add_plain_dr_scan(1, &field, TAP_RESET);
1182 jtag_execute_queue();
1183
1184 for (i = 0; i < JTAG_MAX_CHAIN_SIZE * 4; i++)
1185 {
1186 zero_check |= idcode_buffer[i];
1187 one_check &= idcode_buffer[i];
1188 }
1189
1190 /* if there wasn't a single non-zero bit or if all bits were one, the scan isn't valid */
1191 if ((zero_check == 0x00) || (one_check == 0xff))
1192 {
1193 LOG_ERROR("JTAG communication failure, check connection, JTAG interface, target power etc.");
1194 return ERROR_JTAG_INIT_FAILED;
1195 }
1196
1197 /* point at the 1st tap */
1198 tap = jtag_NextEnabledTap(NULL);
1199 if( tap == NULL ){
1200 LOG_ERROR("JTAG: No taps enabled?");
1201 return ERROR_JTAG_INIT_FAILED;
1202 }
1203
1204 for (bit_count = 0; bit_count < (JTAG_MAX_CHAIN_SIZE * 32) - 31;)
1205 {
1206 u32 idcode = buf_get_u32(idcode_buffer, bit_count, 32);
1207 if ((idcode & 1) == 0)
1208 {
1209 /* LSB must not be 0, this indicates a device in bypass */
1210 LOG_WARNING("Tap/Device does not have IDCODE");
1211 idcode=0;
1212
1213 bit_count += 1;
1214 }
1215 else
1216 {
1217 u32 manufacturer;
1218 u32 part;
1219 u32 version;
1220
1221 /* some devices, such as AVR will output all 1's instead of TDI
1222 input value at end of chain. */
1223 if ((idcode == 0x000000FF)||(idcode == 0xFFFFFFFF))
1224 {
1225 int unexpected=0;
1226 /* End of chain (invalid manufacturer ID)
1227 *
1228 * The JTAG examine is the very first thing that happens
1229 *
1230 * A single JTAG device requires only 64 bits to be read back correctly.
1231 *
1232 * The code below adds a check that the rest of the data scanned (640 bits)
1233 * are all as expected. This helps diagnose/catch problems with the JTAG chain
1234 *
1235 * earlier and gives more helpful/explicit error messages.
1236 */
1237 for (bit_count += 32; bit_count < (JTAG_MAX_CHAIN_SIZE * 32) - 31;bit_count += 32)
1238 {
1239 idcode = buf_get_u32(idcode_buffer, bit_count, 32);
1240 if (unexpected||((idcode != 0x000000FF)&&(idcode != 0xFFFFFFFF)))
1241 {
1242 LOG_WARNING("Unexpected idcode after end of chain! %d 0x%08x", bit_count, idcode);
1243 unexpected = 1;
1244 }
1245 }
1246
1247 break;
1248 }
1249
1250 #define EXTRACT_MFG(X) (((X) & 0xffe) >> 1)
1251 manufacturer = EXTRACT_MFG(idcode);
1252 #define EXTRACT_PART(X) (((X) & 0xffff000) >> 12)
1253 part = EXTRACT_PART(idcode);
1254 #define EXTRACT_VER(X) (((X) & 0xf0000000) >> 28)
1255 version = EXTRACT_VER(idcode);
1256
1257 LOG_INFO("JTAG tap: %s tap/device found: 0x%8.8x (Manufacturer: 0x%3.3x, Part: 0x%4.4x, Version: 0x%1.1x)",
1258 ((tap != NULL) ? (tap->dotted_name) : "(not-named)"),
1259 idcode, manufacturer, part, version);
1260
1261 bit_count += 32;
1262 }
1263 if (tap)
1264 {
1265 tap->idcode = idcode;
1266
1267 if (tap->expected_ids_cnt > 0) {
1268 /* Loop over the expected identification codes and test for a match */
1269 u8 ii;
1270 for (ii = 0; ii < tap->expected_ids_cnt; ii++) {
1271 if( tap->idcode == tap->expected_ids[ii] ){
1272 break;
1273 }
1274 }
1275
1276 /* If none of the expected ids matched, log an error */
1277 if (ii == tap->expected_ids_cnt) {
1278 LOG_ERROR("JTAG tap: %s got: 0x%08x (mfg: 0x%3.3x, part: 0x%4.4x, ver: 0x%1.1x)",
1279 tap->dotted_name,
1280 idcode,
1281 EXTRACT_MFG( tap->idcode ),
1282 EXTRACT_PART( tap->idcode ),
1283 EXTRACT_VER( tap->idcode ) );
1284 for (ii = 0; ii < tap->expected_ids_cnt; ii++) {
1285 LOG_ERROR("JTAG tap: %s expected %hhu of %hhu: 0x%08x (mfg: 0x%3.3x, part: 0x%4.4x, ver: 0x%1.1x)",
1286 tap->dotted_name,
1287 ii + 1,
1288 tap->expected_ids_cnt,
1289 tap->expected_ids[ii],
1290 EXTRACT_MFG( tap->expected_ids[ii] ),
1291 EXTRACT_PART( tap->expected_ids[ii] ),
1292 EXTRACT_VER( tap->expected_ids[ii] ) );
1293 }
1294
1295 return ERROR_JTAG_INIT_FAILED;
1296 } else {
1297 LOG_INFO("JTAG Tap/device matched");
1298 }
1299 } else {
1300 #if 0
1301 LOG_INFO("JTAG TAP ID: 0x%08x - Unknown - please report (A) chipname and (B) idcode to the openocd project",
1302 tap->idcode);
1303 #endif
1304 }
1305 tap = jtag_NextEnabledTap(tap);
1306 }
1307 device_count++;
1308 }
1309
1310 /* see if number of discovered devices matches configuration */
1311 if (device_count != jtag_NumEnabledTaps())
1312 {
1313 LOG_ERROR("number of discovered devices in JTAG chain (%i) doesn't match (enabled) configuration (%i), total taps: %d",
1314 device_count, jtag_NumEnabledTaps(), jtag_NumTotalTaps());
1315 LOG_ERROR("check the config file and ensure proper JTAG communication (connections, speed, ...)");
1316 return ERROR_JTAG_INIT_FAILED;
1317 }
1318
1319 return ERROR_OK;
1320 }
1321
1322 int jtag_validate_chain(void)
1323 {
1324 jtag_tap_t *tap;
1325 int total_ir_length = 0;
1326 u8 *ir_test = NULL;
1327 scan_field_t field;
1328 int chain_pos = 0;
1329
1330 tap = NULL;
1331 total_ir_length = 0;
1332 for(;;){
1333 tap = jtag_NextEnabledTap(tap);
1334 if( tap == NULL ){
1335 break;
1336 }
1337 total_ir_length += tap->ir_length;
1338 }
1339
1340 total_ir_length += 2;
1341 ir_test = malloc(CEIL(total_ir_length, 8));
1342 buf_set_ones(ir_test, total_ir_length);
1343
1344 field.tap = NULL;
1345 field.num_bits = total_ir_length;
1346 field.out_value = ir_test;
1347 field.in_value = ir_test;
1348
1349
1350 jtag_add_plain_ir_scan(1, &field, TAP_RESET);
1351 jtag_execute_queue();
1352
1353 tap = NULL;
1354 chain_pos = 0;
1355 int val;
1356 for(;;){
1357 tap = jtag_NextEnabledTap(tap);
1358 if( tap == NULL ){
1359 break;
1360 }
1361
1362 val = buf_get_u32(ir_test, chain_pos, 2);
1363 if (val != 0x1)
1364 {
1365 char *cbuf = buf_to_str(ir_test, total_ir_length, 16);
1366 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);
1367 free(cbuf);
1368 free(ir_test);
1369 return ERROR_JTAG_INIT_FAILED;
1370 }
1371 chain_pos += tap->ir_length;
1372 }
1373
1374 val = buf_get_u32(ir_test, chain_pos, 2);
1375 if (val != 0x3)
1376 {
1377 char *cbuf = buf_to_str(ir_test, total_ir_length, 16);
1378 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);
1379 free(cbuf);
1380 free(ir_test);
1381 return ERROR_JTAG_INIT_FAILED;
1382 }
1383
1384 free(ir_test);
1385
1386 return ERROR_OK;
1387 }
1388
1389 enum jtag_tap_cfg_param {
1390 JCFG_EVENT
1391 };
1392
1393 static Jim_Nvp nvp_config_opts[] = {
1394 { .name = "-event", .value = JCFG_EVENT },
1395
1396 { .name = NULL, .value = -1 }
1397 };
1398
1399 static int jtag_tap_configure_cmd( Jim_GetOptInfo *goi, jtag_tap_t * tap)
1400 {
1401 Jim_Nvp *n;
1402 Jim_Obj *o;
1403 int e;
1404
1405 /* parse config or cget options */
1406 while (goi->argc > 0) {
1407 Jim_SetEmptyResult (goi->interp);
1408
1409 e = Jim_GetOpt_Nvp(goi, nvp_config_opts, &n);
1410 if (e != JIM_OK) {
1411 Jim_GetOpt_NvpUnknown(goi, nvp_config_opts, 0);
1412 return e;
1413 }
1414
1415 switch (n->value) {
1416 case JCFG_EVENT:
1417 if (goi->argc == 0) {
1418 Jim_WrongNumArgs( goi->interp, goi->argc, goi->argv, "-event ?event-name? ..." );
1419 return JIM_ERR;
1420 }
1421
1422 e = Jim_GetOpt_Nvp( goi, nvp_jtag_tap_event, &n );
1423 if (e != JIM_OK) {
1424 Jim_GetOpt_NvpUnknown(goi, nvp_jtag_tap_event, 1);
1425 return e;
1426 }
1427
1428 if (goi->isconfigure) {
1429 if (goi->argc != 1) {
1430 Jim_WrongNumArgs(goi->interp, goi->argc, goi->argv, "-event ?event-name? ?EVENT-BODY?");
1431 return JIM_ERR;
1432 }
1433 } else {
1434 if (goi->argc != 0) {
1435 Jim_WrongNumArgs(goi->interp, goi->argc, goi->argv, "-event ?event-name?");
1436 return JIM_ERR;
1437 }
1438 }
1439
1440 {
1441 jtag_tap_event_action_t *jteap;
1442
1443 jteap = tap->event_action;
1444 /* replace existing? */
1445 while (jteap) {
1446 if (jteap->event == (enum jtag_tap_event)n->value) {
1447 break;
1448 }
1449 jteap = jteap->next;
1450 }
1451
1452 if (goi->isconfigure) {
1453 if (jteap == NULL) {
1454 /* create new */
1455 jteap = calloc(1, sizeof (*jteap));
1456 }
1457 jteap->event = n->value;
1458 Jim_GetOpt_Obj( goi, &o);
1459 if (jteap->body) {
1460 Jim_DecrRefCount(interp, jteap->body);
1461 }
1462 jteap->body = Jim_DuplicateObj(goi->interp, o);
1463 Jim_IncrRefCount(jteap->body);
1464
1465 /* add to head of event list */
1466 jteap->next = tap->event_action;
1467 tap->event_action = jteap;
1468 Jim_SetEmptyResult(goi->interp);
1469 } else {
1470 /* get */
1471 if (jteap == NULL) {
1472 Jim_SetEmptyResult(goi->interp);
1473 } else {
1474 Jim_SetResult(goi->interp, Jim_DuplicateObj(goi->interp, jteap->body));
1475 }
1476 }
1477 }
1478 /* loop for more */
1479 break;
1480 }
1481 } /* while (goi->argc) */
1482
1483 return JIM_OK;
1484 }
1485
1486 static int jim_newtap_cmd( Jim_GetOptInfo *goi )
1487 {
1488 jtag_tap_t *pTap;
1489 jtag_tap_t **ppTap;
1490 jim_wide w;
1491 int x;
1492 int e;
1493 int reqbits;
1494 Jim_Nvp *n;
1495 char *cp;
1496 const Jim_Nvp opts[] = {
1497 #define NTAP_OPT_IRLEN 0
1498 { .name = "-irlen" , .value = NTAP_OPT_IRLEN },
1499 #define NTAP_OPT_IRMASK 1
1500 { .name = "-irmask" , .value = NTAP_OPT_IRMASK },
1501 #define NTAP_OPT_IRCAPTURE 2
1502 { .name = "-ircapture" , .value = NTAP_OPT_IRCAPTURE },
1503 #define NTAP_OPT_ENABLED 3
1504 { .name = "-enable" , .value = NTAP_OPT_ENABLED },
1505 #define NTAP_OPT_DISABLED 4
1506 { .name = "-disable" , .value = NTAP_OPT_DISABLED },
1507 #define NTAP_OPT_EXPECTED_ID 5
1508 { .name = "-expected-id" , .value = NTAP_OPT_EXPECTED_ID },
1509 { .name = NULL , .value = -1 },
1510 };
1511
1512 pTap = malloc( sizeof(jtag_tap_t) );
1513 memset( pTap, 0, sizeof(*pTap) );
1514 if( !pTap ){
1515 Jim_SetResult_sprintf( goi->interp, "no memory");
1516 return JIM_ERR;
1517 }
1518 /*
1519 * we expect CHIP + TAP + OPTIONS
1520 * */
1521 if( goi->argc < 3 ){
1522 Jim_SetResult_sprintf(goi->interp, "Missing CHIP TAP OPTIONS ....");
1523 return JIM_ERR;
1524 }
1525 Jim_GetOpt_String( goi, &cp, NULL );
1526 pTap->chip = strdup(cp);
1527
1528 Jim_GetOpt_String( goi, &cp, NULL );
1529 pTap->tapname = strdup(cp);
1530
1531 /* name + dot + name + null */
1532 x = strlen(pTap->chip) + 1 + strlen(pTap->tapname) + 1;
1533 cp = malloc( x );
1534 sprintf( cp, "%s.%s", pTap->chip, pTap->tapname );
1535 pTap->dotted_name = cp;
1536
1537 LOG_DEBUG("Creating New Tap, Chip: %s, Tap: %s, Dotted: %s, %d params",
1538 pTap->chip, pTap->tapname, pTap->dotted_name, goi->argc);
1539
1540 /* default is enabled */
1541 pTap->enabled = 1;
1542
1543 /* deal with options */
1544 #define NTREQ_IRLEN 1
1545 #define NTREQ_IRCAPTURE 2
1546 #define NTREQ_IRMASK 4
1547
1548 /* clear them as we find them */
1549 reqbits = (NTREQ_IRLEN | NTREQ_IRCAPTURE | NTREQ_IRMASK);
1550
1551 while( goi->argc ){
1552 e = Jim_GetOpt_Nvp( goi, opts, &n );
1553 if( e != JIM_OK ){
1554 Jim_GetOpt_NvpUnknown( goi, opts, 0 );
1555 return e;
1556 }
1557 LOG_DEBUG("Processing option: %s", n->name );
1558 switch( n->value ){
1559 case NTAP_OPT_ENABLED:
1560 pTap->enabled = 1;
1561 break;
1562 case NTAP_OPT_DISABLED:
1563 pTap->enabled = 0;
1564 break;
1565 case NTAP_OPT_EXPECTED_ID:
1566 {
1567 u32 *new_expected_ids;
1568
1569 e = Jim_GetOpt_Wide( goi, &w );
1570 if( e != JIM_OK) {
1571 Jim_SetResult_sprintf(goi->interp, "option: %s bad parameter", n->name);
1572 return e;
1573 }
1574
1575 new_expected_ids = malloc(sizeof(u32) * (pTap->expected_ids_cnt + 1));
1576 if (new_expected_ids == NULL) {
1577 Jim_SetResult_sprintf( goi->interp, "no memory");
1578 return JIM_ERR;
1579 }
1580
1581 memcpy(new_expected_ids, pTap->expected_ids, sizeof(u32) * pTap->expected_ids_cnt);
1582
1583 new_expected_ids[pTap->expected_ids_cnt] = w;
1584
1585 free(pTap->expected_ids);
1586 pTap->expected_ids = new_expected_ids;
1587 pTap->expected_ids_cnt++;
1588 break;
1589 }
1590 case NTAP_OPT_IRLEN:
1591 case NTAP_OPT_IRMASK:
1592 case NTAP_OPT_IRCAPTURE:
1593 e = Jim_GetOpt_Wide( goi, &w );
1594 if( e != JIM_OK ){
1595 Jim_SetResult_sprintf( goi->interp, "option: %s bad parameter", n->name );
1596 return e;
1597 }
1598 if( (w < 0) || (w > 0xffff) ){
1599 /* wacky value */
1600 Jim_SetResult_sprintf( goi->interp, "option: %s - wacky value: %d (0x%x)",
1601 n->name, (int)(w), (int)(w));
1602 return JIM_ERR;
1603 }
1604 switch(n->value){
1605 case NTAP_OPT_IRLEN:
1606 pTap->ir_length = w;
1607 reqbits &= (~(NTREQ_IRLEN));
1608 break;
1609 case NTAP_OPT_IRMASK:
1610 pTap->ir_capture_mask = w;
1611 reqbits &= (~(NTREQ_IRMASK));
1612 break;
1613 case NTAP_OPT_IRCAPTURE:
1614 pTap->ir_capture_value = w;
1615 reqbits &= (~(NTREQ_IRCAPTURE));
1616 break;
1617 }
1618 } /* switch(n->value) */
1619 } /* while( goi->argc ) */
1620
1621 /* Did we get all the options? */
1622 if( reqbits ){
1623 // no
1624 Jim_SetResult_sprintf( goi->interp,
1625 "newtap: %s missing required parameters",
1626 pTap->dotted_name);
1627 /* TODO: Tell user what is missing :-( */
1628 /* no memory leaks pelase */
1629 free(((void *)(pTap->expected_ids)));
1630 free(((void *)(pTap->chip)));
1631 free(((void *)(pTap->tapname)));
1632 free(((void *)(pTap->dotted_name)));
1633 free(((void *)(pTap)));
1634 return JIM_ERR;
1635 }
1636
1637 pTap->expected = malloc( pTap->ir_length );
1638 pTap->expected_mask = malloc( pTap->ir_length );
1639 pTap->cur_instr = malloc( pTap->ir_length );
1640
1641 buf_set_u32( pTap->expected,
1642 0,
1643 pTap->ir_length,
1644 pTap->ir_capture_value );
1645 buf_set_u32( pTap->expected_mask,
1646 0,
1647 pTap->ir_length,
1648 pTap->ir_capture_mask );
1649 buf_set_ones( pTap->cur_instr,
1650 pTap->ir_length );
1651
1652 pTap->bypass = 1;
1653
1654 jtag_register_event_callback(jtag_reset_callback, pTap );
1655
1656 ppTap = &(jtag_all_taps);
1657 while( (*ppTap) != NULL ){
1658 ppTap = &((*ppTap)->next_tap);
1659 }
1660 *ppTap = pTap;
1661 {
1662 static int n_taps = 0;
1663 pTap->abs_chain_position = n_taps++;
1664 }
1665 LOG_DEBUG( "Created Tap: %s @ abs position %d, irlen %d, capture: 0x%x mask: 0x%x",
1666 (*ppTap)->dotted_name,
1667 (*ppTap)->abs_chain_position,
1668 (*ppTap)->ir_length,
1669 (*ppTap)->ir_capture_value,
1670 (*ppTap)->ir_capture_mask );
1671
1672 return ERROR_OK;
1673 }
1674
1675 static int jim_jtag_command( Jim_Interp *interp, int argc, Jim_Obj *const *argv )
1676 {
1677 Jim_GetOptInfo goi;
1678 int e;
1679 Jim_Nvp *n;
1680 Jim_Obj *o;
1681 struct command_context_s *context;
1682
1683 enum {
1684 JTAG_CMD_INTERFACE,
1685 JTAG_CMD_INIT_RESET,
1686 JTAG_CMD_NEWTAP,
1687 JTAG_CMD_TAPENABLE,
1688 JTAG_CMD_TAPDISABLE,
1689 JTAG_CMD_TAPISENABLED,
1690 JTAG_CMD_CONFIGURE,
1691 JTAG_CMD_CGET
1692 };
1693
1694 const Jim_Nvp jtag_cmds[] = {
1695 { .name = "interface" , .value = JTAG_CMD_INTERFACE },
1696 { .name = "arp_init-reset", .value = JTAG_CMD_INIT_RESET },
1697 { .name = "newtap" , .value = JTAG_CMD_NEWTAP },
1698 { .name = "tapisenabled" , .value = JTAG_CMD_TAPISENABLED },
1699 { .name = "tapenable" , .value = JTAG_CMD_TAPENABLE },
1700 { .name = "tapdisable" , .value = JTAG_CMD_TAPDISABLE },
1701 { .name = "configure" , .value = JTAG_CMD_CONFIGURE },
1702 { .name = "cget" , .value = JTAG_CMD_CGET },
1703
1704 { .name = NULL, .value = -1 },
1705 };
1706
1707 context = Jim_GetAssocData(interp, "context");
1708 /* go past the command */
1709 Jim_GetOpt_Setup( &goi, interp, argc-1, argv+1 );
1710
1711 e = Jim_GetOpt_Nvp( &goi, jtag_cmds, &n );
1712 if( e != JIM_OK ){
1713 Jim_GetOpt_NvpUnknown( &goi, jtag_cmds, 0 );
1714 return e;
1715 }
1716 Jim_SetEmptyResult( goi.interp );
1717 switch( n->value ){
1718 case JTAG_CMD_INTERFACE:
1719 /* return the name of the interface */
1720 /* TCL code might need to know the exact type... */
1721 /* FUTURE: we allow this as a means to "set" the interface. */
1722 if( goi.argc != 0 ){
1723 Jim_WrongNumArgs( goi.interp, 1, goi.argv-1, "(no params)");
1724 return JIM_ERR;
1725 }
1726 Jim_SetResultString( goi.interp, jtag_interface->name, -1 );
1727 return JIM_OK;
1728 case JTAG_CMD_INIT_RESET:
1729 if( goi.argc != 0 ){
1730 Jim_WrongNumArgs( goi.interp, 1, goi.argv-1, "(no params)");
1731 return JIM_ERR;
1732 }
1733 e = jtag_init_reset(context);
1734 if( e != ERROR_OK ){
1735 Jim_SetResult_sprintf( goi.interp, "error: %d", e);
1736 return JIM_ERR;
1737 }
1738 return JIM_OK;
1739 case JTAG_CMD_NEWTAP:
1740 return jim_newtap_cmd( &goi );
1741 break;
1742 case JTAG_CMD_TAPISENABLED:
1743 case JTAG_CMD_TAPENABLE:
1744 case JTAG_CMD_TAPDISABLE:
1745 if( goi.argc != 1 ){
1746 Jim_SetResultString( goi.interp, "Too many parameters",-1 );
1747 return JIM_ERR;
1748 }
1749
1750 {
1751 jtag_tap_t *t;
1752 t = jtag_TapByJimObj( goi.interp, goi.argv[0] );
1753 if( t == NULL ){
1754 return JIM_ERR;
1755 }
1756 switch( n->value ){
1757 case JTAG_CMD_TAPISENABLED:
1758 e = t->enabled;
1759 break;
1760 case JTAG_CMD_TAPENABLE:
1761 jtag_tap_handle_event( t, JTAG_TAP_EVENT_ENABLE);
1762 e = 1;
1763 t->enabled = e;
1764 break;
1765 case JTAG_CMD_TAPDISABLE:
1766 jtag_tap_handle_event( t, JTAG_TAP_EVENT_DISABLE);
1767 e = 0;
1768 t->enabled = e;
1769 break;
1770 }
1771 Jim_SetResult( goi.interp, Jim_NewIntObj( goi.interp, e ) );
1772 return JIM_OK;
1773 }
1774 break;
1775
1776 case JTAG_CMD_CGET:
1777 if( goi.argc < 2 ){
1778 Jim_WrongNumArgs( goi.interp, 0, NULL, "?tap-name? -option ...");
1779 return JIM_ERR;
1780 }
1781
1782 {
1783 jtag_tap_t *t;
1784
1785 Jim_GetOpt_Obj(&goi, &o);
1786 t = jtag_TapByJimObj( goi.interp, o );
1787 if( t == NULL ){
1788 return JIM_ERR;
1789 }
1790
1791 goi.isconfigure = 0;
1792 return jtag_tap_configure_cmd( &goi, t);
1793 }
1794 break;
1795
1796 case JTAG_CMD_CONFIGURE:
1797 if( goi.argc < 3 ){
1798 Jim_WrongNumArgs( goi.interp, 0, NULL, "?tap-name? -option ?VALUE? ...");
1799 return JIM_ERR;
1800 }
1801
1802 {
1803 jtag_tap_t *t;
1804
1805 Jim_GetOpt_Obj(&goi, &o);
1806 t = jtag_TapByJimObj( goi.interp, o );
1807 if( t == NULL ){
1808 return JIM_ERR;
1809 }
1810
1811 goi.isconfigure = 1;
1812 return jtag_tap_configure_cmd( &goi, t);
1813 }
1814 }
1815
1816 return JIM_ERR;
1817 }
1818
1819 int jtag_register_commands(struct command_context_s *cmd_ctx)
1820 {
1821 register_jim( cmd_ctx, "jtag", jim_jtag_command, "perform jtag tap actions");
1822
1823 register_command(cmd_ctx, NULL, "interface", handle_interface_command,
1824 COMMAND_CONFIG, "try to configure interface");
1825 register_command(cmd_ctx, NULL, "jtag_speed", handle_jtag_speed_command,
1826 COMMAND_ANY, "(DEPRECATED) set jtag speed (if supported)");
1827 register_command(cmd_ctx, NULL, "jtag_khz", handle_jtag_khz_command,
1828 COMMAND_ANY, "set maximum jtag speed (if supported); "
1829 "parameter is maximum khz, or 0 for adaptive clocking (RTCK).");
1830 register_command(cmd_ctx, NULL, "jtag_device", handle_jtag_device_command,
1831 COMMAND_CONFIG, "(DEPRECATED) jtag_device <ir_length> <ir_expected> <ir_mask>");
1832 register_command(cmd_ctx, NULL, "reset_config", handle_reset_config_command,
1833 COMMAND_ANY,
1834 "[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]");
1835 register_command(cmd_ctx, NULL, "jtag_nsrst_delay", handle_jtag_nsrst_delay_command,
1836 COMMAND_ANY, "jtag_nsrst_delay <ms> - delay after deasserting srst in ms");
1837 register_command(cmd_ctx, NULL, "jtag_ntrst_delay", handle_jtag_ntrst_delay_command,
1838 COMMAND_ANY, "jtag_ntrst_delay <ms> - delay after deasserting trst in ms");
1839
1840 register_command(cmd_ctx, NULL, "scan_chain", handle_scan_chain_command,
1841 COMMAND_EXEC, "print current scan chain configuration");
1842
1843 register_command(cmd_ctx, NULL, "endstate", handle_endstate_command,
1844 COMMAND_EXEC, "finish JTAG operations in <tap_state>");
1845 register_command(cmd_ctx, NULL, "jtag_reset", handle_jtag_reset_command,
1846 COMMAND_EXEC, "toggle reset lines <trst> <srst>");
1847 register_command(cmd_ctx, NULL, "runtest", handle_runtest_command,
1848 COMMAND_EXEC, "move to Run-Test/Idle, and execute <num_cycles>");
1849 register_command(cmd_ctx, NULL, "irscan", handle_irscan_command,
1850 COMMAND_EXEC, "execute IR scan <device> <instr> [dev2] [instr2] ...");
1851 register_jim(cmd_ctx, "drscan", Jim_Command_drscan, "execute DR scan <device> <num_bits> <value> <num_bits1> <value2> ...");
1852 register_jim(cmd_ctx, "flush_count", Jim_Command_flush_count, "returns number of times the JTAG queue has been flushed");
1853
1854 register_command(cmd_ctx, NULL, "verify_ircapture", handle_verify_ircapture_command,
1855 COMMAND_ANY, "verify value captured during Capture-IR <enable|disable>");
1856 register_command(cmd_ctx, NULL, "verify_jtag", handle_verify_jtag_command,
1857 COMMAND_ANY, "verify value capture <enable|disable>");
1858 register_command(cmd_ctx, NULL, "tms_sequence", handle_tms_sequence_command,
1859 COMMAND_ANY, "choose short(default) or long tms_sequence <short|long>");
1860 return ERROR_OK;
1861 }
1862
1863 int jtag_interface_init(struct command_context_s *cmd_ctx)
1864 {
1865 if (jtag)
1866 return ERROR_OK;
1867
1868 if (!jtag_interface)
1869 {
1870 /* nothing was previously specified by "interface" command */
1871 LOG_ERROR("JTAG interface has to be specified, see \"interface\" command");
1872 return ERROR_JTAG_INVALID_INTERFACE;
1873 }
1874 if(hasKHz)
1875 {
1876 jtag_interface->khz(speed_khz, &jtag_speed);
1877 hasKHz = 0;
1878 }
1879
1880 if (jtag_interface->init() != ERROR_OK)
1881 return ERROR_JTAG_INIT_FAILED;
1882
1883 jtag = jtag_interface;
1884 return ERROR_OK;
1885 }
1886
1887 static int jtag_init_inner(struct command_context_s *cmd_ctx)
1888 {
1889 jtag_tap_t *tap;
1890 int retval;
1891
1892 LOG_DEBUG("Init JTAG chain");
1893
1894 tap = jtag_NextEnabledTap(NULL);
1895 if( tap == NULL ){
1896 LOG_ERROR("There are no enabled taps?");
1897 return ERROR_JTAG_INIT_FAILED;
1898 }
1899
1900 jtag_add_tlr();
1901 if ((retval=jtag_execute_queue())!=ERROR_OK)
1902 return retval;
1903
1904 /* examine chain first, as this could discover the real chain layout */
1905 if (jtag_examine_chain() != ERROR_OK)
1906 {
1907 LOG_ERROR("trying to validate configured JTAG chain anyway...");
1908 }
1909
1910 if (jtag_validate_chain() != ERROR_OK)
1911 {
1912 LOG_WARNING("Could not validate JTAG chain, continuing anyway...");
1913 }
1914
1915 return ERROR_OK;
1916 }
1917
1918 int jtag_interface_quit(void)
1919 {
1920 if (!jtag || !jtag->quit)
1921 return ERROR_OK;
1922
1923 // close the JTAG interface
1924 int result = jtag->quit();
1925 if (ERROR_OK != result)
1926 LOG_ERROR("failed: %d", result);
1927
1928 return ERROR_OK;
1929 }
1930
1931
1932 int jtag_init_reset(struct command_context_s *cmd_ctx)
1933 {
1934 int retval;
1935
1936 if ((retval=jtag_interface_init(cmd_ctx)) != ERROR_OK)
1937 return retval;
1938
1939 LOG_DEBUG("Trying to bring the JTAG controller to life by asserting TRST / RESET");
1940
1941 /* Reset can happen after a power cycle.
1942 *
1943 * Ideally we would only assert TRST or run RESET before the target reset.
1944 *
1945 * However w/srst_pulls_trst, trst is asserted together with the target
1946 * reset whether we want it or not.
1947 *
1948 * NB! Some targets have JTAG circuitry disabled until a
1949 * trst & srst has been asserted.
1950 *
1951 * NB! here we assume nsrst/ntrst delay are sufficient!
1952 *
1953 * NB! order matters!!!! srst *can* disconnect JTAG circuitry
1954 *
1955 */
1956 jtag_add_reset(1, 0); /* RESET or TRST */
1957 if (jtag_reset_config & RESET_HAS_SRST)
1958 {
1959 jtag_add_reset(1, 1);
1960 if ((jtag_reset_config & RESET_SRST_PULLS_TRST)==0)
1961 jtag_add_reset(0, 1);
1962 }
1963 jtag_add_reset(0, 0);
1964 if ((retval = jtag_execute_queue()) != ERROR_OK)
1965 return retval;
1966
1967 /* Check that we can communication on the JTAG chain + eventually we want to
1968 * be able to perform enumeration only after OpenOCD has started
1969 * telnet and GDB server
1970 *
1971 * That would allow users to more easily perform any magic they need to before
1972 * reset happens.
1973 */
1974 return jtag_init_inner(cmd_ctx);
1975 }
1976
1977 int jtag_init(struct command_context_s *cmd_ctx)
1978 {
1979 int retval;
1980 if ((retval=jtag_interface_init(cmd_ctx)) != ERROR_OK)
1981 return retval;
1982 if (jtag_init_inner(cmd_ctx)==ERROR_OK)
1983 {
1984 return ERROR_OK;
1985 }
1986 return jtag_init_reset(cmd_ctx);
1987 }
1988
1989 static int default_khz(int khz, int *jtag_speed)
1990 {
1991 LOG_ERROR("Translation from khz to jtag_speed not implemented");
1992 return ERROR_FAIL;
1993 }
1994
1995 static int default_speed_div(int speed, int *khz)
1996 {
1997 LOG_ERROR("Translation from jtag_speed to khz not implemented");
1998 return ERROR_FAIL;
1999 }
2000
2001 static int default_power_dropout(int *dropout)
2002 {
2003 *dropout=0; /* by default we can't detect power dropout */
2004 return ERROR_OK;
2005 }
2006
2007 static int default_srst_asserted(int *srst_asserted)
2008 {
2009 *srst_asserted=0; /* by default we can't detect srst asserted */
2010 return ERROR_OK;
2011 }
2012
2013 static int handle_interface_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2014 {
2015 int i;
2016 int retval;
2017
2018 /* check whether the interface is already configured */
2019 if (jtag_interface)
2020 {
2021 LOG_WARNING("Interface already configured, ignoring");
2022 return ERROR_OK;
2023 }
2024
2025 /* interface name is a mandatory argument */
2026 if (argc < 1 || args[0][0] == '\0')
2027 {
2028 return ERROR_COMMAND_SYNTAX_ERROR;
2029 }
2030
2031 for (i=0; jtag_interfaces[i]; i++)
2032 {
2033 if (strcmp(args[0], jtag_interfaces[i]->name) == 0)
2034 {
2035 if ((retval = jtag_interfaces[i]->register_commands(cmd_ctx)) != ERROR_OK)
2036 {
2037 return retval;
2038 }
2039
2040 jtag_interface = jtag_interfaces[i];
2041
2042 if (jtag_interface->khz == NULL)
2043 {
2044 jtag_interface->khz = default_khz;
2045 }
2046 if (jtag_interface->speed_div == NULL)
2047 {
2048 jtag_interface->speed_div = default_speed_div;
2049 }
2050 if (jtag_interface->power_dropout == NULL)
2051 {
2052 jtag_interface->power_dropout = default_power_dropout;
2053 }
2054 if (jtag_interface->srst_asserted == NULL)
2055 {
2056 jtag_interface->srst_asserted = default_srst_asserted;
2057 }
2058
2059 return ERROR_OK;
2060 }
2061 }
2062
2063 /* no valid interface was found (i.e. the configuration option,
2064 * didn't match one of the compiled-in interfaces
2065 */
2066 LOG_ERROR("No valid jtag interface found (%s)", args[0]);
2067 LOG_ERROR("compiled-in jtag interfaces:");
2068 for (i = 0; jtag_interfaces[i]; i++)
2069 {
2070 LOG_ERROR("%i: %s", i, jtag_interfaces[i]->name);
2071 }
2072
2073 return ERROR_JTAG_INVALID_INTERFACE;
2074 }
2075
2076 static int handle_jtag_device_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2077 {
2078 int e;
2079 char buf[1024];
2080 Jim_Obj *newargs[ 10 ];
2081 /*
2082 * CONVERT SYNTAX
2083 * argv[-1] = command
2084 * argv[ 0] = ir length
2085 * argv[ 1] = ir capture
2086 * argv[ 2] = ir mask
2087 * argv[ 3] = not actually used by anything but in the docs
2088 */
2089
2090 if( argc < 4 ){
2091 command_print( cmd_ctx, "OLD DEPRECATED SYNTAX: Please use the NEW syntax");
2092 return ERROR_OK;
2093 }
2094 command_print( cmd_ctx, "OLD SYNTAX: DEPRECATED - translating to new syntax");
2095 command_print( cmd_ctx, "jtag newtap CHIP TAP -irlen %s -ircapture %s -irvalue %s",
2096 args[0],
2097 args[1],
2098 args[2] );
2099 command_print( cmd_ctx, "Example: STM32 has 2 taps, the cortexM3(len4) + boundaryscan(len5)");
2100 command_print( cmd_ctx, "jtag newtap stm32 cortexm3 ....., thus creating the tap: \"stm32.cortexm3\"");
2101 command_print( cmd_ctx, "jtag newtap stm32 boundary ....., and the tap: \"stm32.boundary\"");
2102 command_print( cmd_ctx, "And then refer to the taps by the dotted name.");
2103
2104 newargs[0] = Jim_NewStringObj( interp, "jtag", -1 );
2105 newargs[1] = Jim_NewStringObj( interp, "newtap", -1 );
2106 sprintf( buf, "chip%d", jtag_NumTotalTaps() );
2107 newargs[2] = Jim_NewStringObj( interp, buf, -1 );
2108 sprintf( buf, "tap%d", jtag_NumTotalTaps() );
2109 newargs[3] = Jim_NewStringObj( interp, buf, -1 );
2110 newargs[4] = Jim_NewStringObj( interp, "-irlen", -1 );
2111 newargs[5] = Jim_NewStringObj( interp, args[0], -1 );
2112 newargs[6] = Jim_NewStringObj( interp, "-ircapture", -1 );
2113 newargs[7] = Jim_NewStringObj( interp, args[1], -1 );
2114 newargs[8] = Jim_NewStringObj( interp, "-irmask", -1 );
2115 newargs[9] = Jim_NewStringObj( interp, args[2], -1 );
2116
2117 command_print( cmd_ctx, "NEW COMMAND:");
2118 sprintf( buf, "%s %s %s %s %s %s %s %s %s %s",
2119 Jim_GetString( newargs[0], NULL ),
2120 Jim_GetString( newargs[1], NULL ),
2121 Jim_GetString( newargs[2], NULL ),
2122 Jim_GetString( newargs[3], NULL ),
2123 Jim_GetString( newargs[4], NULL ),
2124 Jim_GetString( newargs[5], NULL ),
2125 Jim_GetString( newargs[6], NULL ),
2126 Jim_GetString( newargs[7], NULL ),
2127 Jim_GetString( newargs[8], NULL ),
2128 Jim_GetString( newargs[9], NULL ) );
2129
2130 e = jim_jtag_command( interp, 10, newargs );
2131 if( e != JIM_OK ){
2132 command_print( cmd_ctx, "%s", Jim_GetString( Jim_GetResult(interp), NULL ) );
2133 }
2134 return e;
2135 }
2136
2137 static int handle_scan_chain_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2138 {
2139 jtag_tap_t *tap;
2140
2141 tap = jtag_all_taps;
2142 command_print(cmd_ctx, " TapName | Enabled | IdCode Expected IrLen IrCap IrMask Instr ");
2143 command_print(cmd_ctx, "---|--------------------|---------|------------|------------|------|------|------|---------");
2144
2145 while( tap ){
2146 u32 expected, expected_mask, cur_instr, ii;
2147 expected = buf_get_u32(tap->expected, 0, tap->ir_length);
2148 expected_mask = buf_get_u32(tap->expected_mask, 0, tap->ir_length);
2149 cur_instr = buf_get_u32(tap->cur_instr, 0, tap->ir_length);
2150
2151 command_print(cmd_ctx,
2152 "%2d | %-18s | %c | 0x%08x | 0x%08x | 0x%02x | 0x%02x | 0x%02x | 0x%02x",
2153 tap->abs_chain_position,
2154 tap->dotted_name,
2155 tap->enabled ? 'Y' : 'n',
2156 tap->idcode,
2157 (tap->expected_ids_cnt > 0 ? tap->expected_ids[0] : 0),
2158 tap->ir_length,
2159 expected,
2160 expected_mask,
2161 cur_instr);
2162
2163 for (ii = 1; ii < tap->expected_ids_cnt; ii++) {
2164 command_print(cmd_ctx, " | | | | 0x%08x | | | | ",
2165 tap->expected_ids[ii]);
2166 }
2167
2168 tap = tap->next_tap;
2169 }
2170
2171 return ERROR_OK;
2172 }
2173
2174 static int handle_reset_config_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2175 {
2176 int new_cfg = 0;
2177 int mask = 0;
2178
2179 if (argc < 1)
2180 return ERROR_COMMAND_SYNTAX_ERROR;
2181
2182 /* Original versions cared about the order of these tokens:
2183 * reset_config signals [combination [trst_type [srst_type]]]
2184 * They also clobbered the previous configuration even on error.
2185 *
2186 * Here we don't care about the order, and only change values
2187 * which have been explicitly specified.
2188 */
2189 for (; argc; argc--, args++) {
2190 int tmp = 0;
2191 int m;
2192
2193 /* signals */
2194 m = RESET_HAS_TRST | RESET_HAS_SRST;
2195 if (strcmp(*args, "none") == 0)
2196 tmp = RESET_NONE;
2197 else if (strcmp(*args, "trst_only") == 0)
2198 tmp = RESET_HAS_TRST;
2199 else if (strcmp(*args, "srst_only") == 0)
2200 tmp = RESET_HAS_SRST;
2201 else if (strcmp(*args, "trst_and_srst") == 0)
2202 tmp = RESET_HAS_TRST | RESET_HAS_SRST;
2203 else
2204 m = 0;
2205 if (mask & m) {
2206 LOG_ERROR("extra reset_config %s spec (%s)",
2207 "signal", *args);
2208 return ERROR_INVALID_ARGUMENTS;
2209 }
2210 if (m)
2211 goto next;
2212
2213 /* combination (options for broken wiring) */
2214 m = RESET_SRST_PULLS_TRST | RESET_TRST_PULLS_SRST;
2215 if (strcmp(*args, "separate") == 0)
2216 /* separate reset lines - default */;
2217 else if (strcmp(*args, "srst_pulls_trst") == 0)
2218 tmp |= RESET_SRST_PULLS_TRST;
2219 else if (strcmp(*args, "trst_pulls_srst") == 0)
2220 tmp |= RESET_TRST_PULLS_SRST;
2221 else if (strcmp(*args, "combined") == 0)
2222 tmp |= RESET_SRST_PULLS_TRST | RESET_TRST_PULLS_SRST;
2223 else
2224 m = 0;
2225 if (mask & m) {
2226 LOG_ERROR("extra reset_config %s spec (%s)",
2227 "combination", *args);
2228 return ERROR_INVALID_ARGUMENTS;
2229 }
2230 if (m)
2231 goto next;
2232
2233 /* trst_type (NOP without HAS_TRST) */
2234 m = RESET_TRST_OPEN_DRAIN;
2235 if (strcmp(*args, "trst_open_drain") == 0)
2236 tmp |= RESET_TRST_OPEN_DRAIN;
2237 else if (strcmp(*args, "trst_push_pull") == 0)
2238 /* push/pull from adapter - default */;
2239 else
2240 m = 0;
2241 if (mask & m) {
2242 LOG_ERROR("extra reset_config %s spec (%s)",
2243 "trst_type", *args);
2244 return ERROR_INVALID_ARGUMENTS;
2245 }
2246 if (m)
2247 goto next;
2248
2249 /* srst_type (NOP without HAS_SRST) */
2250 m |= RESET_SRST_PUSH_PULL;
2251 if (strcmp(*args, "srst_push_pull") == 0)
2252 tmp |= RESET_SRST_PUSH_PULL;
2253 else if (strcmp(*args, "srst_open_drain") == 0)
2254 /* open drain from adapter - default */;
2255 else
2256 m = 0;
2257 if (mask & m) {
2258 LOG_ERROR("extra reset_config %s spec (%s)",
2259 "srst_type", *args);
2260 return ERROR_INVALID_ARGUMENTS;
2261 }
2262 if (m)
2263 goto next;
2264
2265 /* caller provided nonsense; fail */
2266 LOG_ERROR("unknown reset_config flag (%s)", *args);
2267 return ERROR_INVALID_ARGUMENTS;
2268
2269 next:
2270 /* Remember the bits which were specified (mask)
2271 * and their new values (new_cfg).
2272 */
2273 mask |= m;
2274 new_cfg |= tmp;
2275 }
2276
2277 /* clear previous values of those bits, save new values */
2278 jtag_reset_config &= ~mask;
2279 jtag_reset_config |= new_cfg;
2280
2281 return ERROR_OK;
2282 }
2283
2284 static int handle_jtag_nsrst_delay_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2285 {
2286 if (argc < 1)
2287 {
2288 LOG_ERROR("jtag_nsrst_delay <ms> command takes one required argument");
2289 exit(-1);
2290 }
2291 else
2292 {
2293 jtag_nsrst_delay = strtoul(args[0], NULL, 0);
2294 }
2295
2296 return ERROR_OK;
2297 }
2298
2299 static int handle_jtag_ntrst_delay_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2300 {
2301 if (argc < 1)
2302 {
2303 LOG_ERROR("jtag_ntrst_delay <ms> command takes one required argument");
2304 exit(-1);
2305 }
2306 else
2307 {
2308 jtag_ntrst_delay = strtoul(args[0], NULL, 0);
2309 }
2310
2311 return ERROR_OK;
2312 }
2313
2314 static int handle_jtag_speed_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2315 {
2316 int retval=ERROR_OK;
2317
2318 if (argc == 1)
2319 {
2320 LOG_DEBUG("handle jtag speed");
2321
2322 int cur_speed = 0;
2323 cur_speed = jtag_speed = strtoul(args[0], NULL, 0);
2324
2325 /* this command can be called during CONFIG,
2326 * in which case jtag isn't initialized */
2327 if (jtag)
2328 {
2329 retval=jtag->speed(cur_speed);
2330 }
2331 } else if (argc == 0)
2332 {
2333 } else
2334 {
2335 return ERROR_COMMAND_SYNTAX_ERROR;
2336 }
2337 command_print(cmd_ctx, "jtag_speed: %d", jtag_speed);
2338
2339 return retval;
2340 }
2341
2342 static int handle_jtag_khz_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2343 {
2344 int retval=ERROR_OK;
2345 LOG_DEBUG("handle jtag khz");
2346
2347 if(argc == 1)
2348 {
2349 speed_khz = strtoul(args[0], NULL, 0);
2350 if (jtag != NULL)
2351 {
2352 int cur_speed = 0;
2353 LOG_DEBUG("have interface set up");
2354 int speed_div1;
2355 if ((retval=jtag->khz(speed_khz, &speed_div1))!=ERROR_OK)
2356 {
2357 speed_khz = 0;
2358 return retval;
2359 }
2360
2361 cur_speed = jtag_speed = speed_div1;
2362
2363 retval=jtag->speed(cur_speed);
2364 } else
2365 {
2366 hasKHz = 1;
2367 }
2368 } else if (argc==0)
2369 {
2370 } else
2371 {
2372 return ERROR_COMMAND_SYNTAX_ERROR;
2373 }
2374
2375 if (jtag!=NULL)
2376 {
2377 if ((retval=jtag->speed_div(jtag_speed, &speed_khz))!=ERROR_OK)
2378 return retval;
2379 }
2380
2381 if (speed_khz==0)
2382 {
2383 command_print(cmd_ctx, "RCLK - adaptive");
2384 } else
2385 {
2386 command_print(cmd_ctx, "%d kHz", speed_khz);
2387 }
2388 return retval;
2389
2390 }
2391
2392 static int handle_endstate_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2393 {
2394 tap_state_t state;
2395
2396 if (argc < 1)
2397 {
2398 return ERROR_COMMAND_SYNTAX_ERROR;
2399 }
2400 else
2401 {
2402 state = tap_state_by_name( args[0] );
2403 if( state < 0 ){
2404 command_print( cmd_ctx, "Invalid state name: %s\n", args[0] );
2405 return ERROR_COMMAND_SYNTAX_ERROR;
2406 }
2407 jtag_add_end_state(state);
2408 jtag_execute_queue();
2409 }
2410 command_print(cmd_ctx, "current endstate: %s", tap_state_name(cmd_queue_end_state));
2411
2412 return ERROR_OK;
2413 }
2414
2415 static int handle_jtag_reset_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2416 {
2417 int trst = -1;
2418 int srst = -1;
2419
2420 if (argc < 2)
2421 {
2422 return ERROR_COMMAND_SYNTAX_ERROR;
2423 }
2424
2425 if (args[0][0] == '1')
2426 trst = 1;
2427 else if (args[0][0] == '0')
2428 trst = 0;
2429 else
2430 {
2431 return ERROR_COMMAND_SYNTAX_ERROR;
2432 }
2433
2434 if (args[1][0] == '1')
2435 srst = 1;
2436 else if (args[1][0] == '0')
2437 srst = 0;
2438 else
2439 {
2440 return ERROR_COMMAND_SYNTAX_ERROR;
2441 }
2442
2443 if (jtag_interface_init(cmd_ctx) != ERROR_OK)
2444 return ERROR_JTAG_INIT_FAILED;
2445
2446 jtag_add_reset(trst, srst);
2447 jtag_execute_queue();
2448
2449 return ERROR_OK;
2450 }
2451
2452 static int handle_runtest_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2453 {
2454 if (argc < 1)
2455 {
2456 return ERROR_COMMAND_SYNTAX_ERROR;
2457 }
2458
2459 jtag_add_runtest(strtol(args[0], NULL, 0), TAP_INVALID);
2460 jtag_execute_queue();
2461
2462 return ERROR_OK;
2463
2464 }
2465
2466 /*
2467 * For "irscan" or "drscan" commands, the "end" (really, "next") state
2468 * should be stable ... and *NOT* a shift state, otherwise free-running
2469 * jtag clocks could change the values latched by the update state.
2470 */
2471 static bool scan_is_safe(tap_state_t state)
2472 {
2473 switch (state)
2474 {
2475 case TAP_RESET:
2476 case TAP_IDLE:
2477 case TAP_DRPAUSE:
2478 case TAP_IRPAUSE:
2479 return true;
2480 default:
2481 return false;
2482 }
2483 }
2484
2485
2486 static int handle_irscan_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2487 {
2488 int i;
2489 scan_field_t *fields;
2490 jtag_tap_t *tap;
2491 tap_state_t endstate;
2492
2493 if ((argc < 2) || (argc % 2))
2494 {
2495 return ERROR_COMMAND_SYNTAX_ERROR;
2496 }
2497
2498 /* optional "-endstate" "statename" at the end of the arguments,
2499 * so that e.g. IRPAUSE can let us load the data register before
2500 * entering RUN/IDLE to execute the instruction we load here.
2501 */
2502 endstate = TAP_IDLE;
2503
2504 if( argc >= 4 ){
2505 /* have at least one pair of numbers. */
2506 /* is last pair the magic text? */
2507 if( 0 == strcmp( "-endstate", args[ argc - 2 ] ) ){
2508 const char *cpA;
2509 const char *cpS;
2510 cpA = args[ argc-1 ];
2511 for( endstate = 0 ; endstate < TAP_NUM_STATES ; endstate++ ){
2512 cpS = tap_state_name( endstate );
2513 if( 0 == strcmp( cpA, cpS ) ){
2514 break;
2515 }
2516 }
2517 if( endstate >= TAP_NUM_STATES ){
2518 return ERROR_COMMAND_SYNTAX_ERROR;
2519 } else {
2520 if (!scan_is_safe(endstate))
2521 LOG_WARNING("irscan with unsafe "
2522 "endstate \"%s\"", cpA);
2523 /* found - remove the last 2 args */
2524 argc -= 2;
2525 }
2526 }
2527 }
2528
2529 int num_fields = argc / 2;
2530
2531 fields = malloc(sizeof(scan_field_t) * num_fields);
2532
2533 for (i = 0; i < num_fields; i++)
2534 {
2535 tap = jtag_TapByString( args[i*2] );
2536 if (tap==NULL)
2537 {
2538 command_print( cmd_ctx, "Tap: %s unknown", args[i*2] );
2539 return ERROR_FAIL;
2540 }
2541 int field_size = tap->ir_length;
2542 fields[i].tap = tap;
2543 fields[i].num_bits = field_size;
2544 fields[i].out_value = malloc(CEIL(field_size, 8));
2545 buf_set_u32(fields[i].out_value, 0, field_size, strtoul(args[i*2+1], NULL, 0));
2546 fields[i].in_value = NULL;
2547 }
2548
2549 /* did we have an endstate? */
2550 jtag_add_ir_scan(num_fields, fields, endstate);
2551
2552 int retval=jtag_execute_queue();
2553
2554 for (i = 0; i < num_fields; i++)
2555 free(fields[i].out_value);
2556
2557 free (fields);
2558
2559 return retval;
2560 }
2561
2562 static int Jim_Command_drscan(Jim_Interp *interp, int argc, Jim_Obj *const *args)
2563 {
2564 int retval;
2565 scan_field_t *fields;
2566 int num_fields;
2567 int field_count = 0;
2568 int i, e;
2569 jtag_tap_t *tap;
2570 tap_state_t endstate;
2571
2572 /* args[1] = device
2573 * args[2] = num_bits
2574 * args[3] = hex string
2575 * ... repeat num bits and hex string ...
2576 *
2577 * .. optionally:
2578 * args[N-2] = "-endstate"
2579 * args[N-1] = statename
2580 */
2581 if ((argc < 4) || ((argc % 2)!=0))
2582 {
2583 Jim_WrongNumArgs(interp, 1, args, "wrong arguments");
2584 return JIM_ERR;
2585 }
2586
2587 endstate = TAP_IDLE;
2588
2589 /* validate arguments as numbers */
2590 e = JIM_OK;
2591 for (i = 2; i < argc; i+=2)
2592 {
2593 long bits;
2594 const char *cp;
2595
2596 e = Jim_GetLong(interp, args[i], &bits);
2597 /* If valid - try next arg */
2598 if( e == JIM_OK ){
2599 continue;
2600 }
2601
2602 /* Not valid.. are we at the end? */
2603 if ( ((i+2) != argc) ){
2604 /* nope, then error */
2605 return e;
2606 }
2607
2608 /* it could be: "-endstate FOO"
2609 * e.g. DRPAUSE so we can issue more instructions
2610 * before entering RUN/IDLE and executing them.
2611 */
2612
2613 /* get arg as a string. */
2614 cp = Jim_GetString( args[i], NULL );
2615 /* is it the magic? */
2616 if( 0 == strcmp( "-endstate", cp ) ){
2617 /* is the statename valid? */
2618 cp = Jim_GetString( args[i+1], NULL );
2619
2620 /* see if it is a valid state name */
2621 endstate = tap_state_by_name(cp);
2622 if( endstate < 0 ){
2623 /* update the error message */
2624 Jim_SetResult_sprintf(interp,"endstate: %s invalid", cp );
2625 } else {
2626 if (!scan_is_safe(endstate))
2627 LOG_WARNING("drscan with unsafe "
2628 "endstate \"%s\"", cp);
2629
2630 /* valid - so clear the error */
2631 e = JIM_OK;
2632 /* and remove the last 2 args */
2633 argc -= 2;
2634 }
2635 }
2636
2637 /* Still an error? */
2638 if( e != JIM_OK ){
2639 return e; /* too bad */
2640 }
2641 } /* validate args */
2642
2643 tap = jtag_TapByJimObj( interp, args[1] );
2644 if( tap == NULL ){
2645 return JIM_ERR;
2646 }
2647
2648 num_fields=(argc-2)/2;
2649 fields = malloc(sizeof(scan_field_t) * num_fields);
2650 for (i = 2; i < argc; i+=2)
2651 {
2652 long bits;
2653 int len;
2654 const char *str;
2655
2656 Jim_GetLong(interp, args[i], &bits);
2657 str = Jim_GetString(args[i+1], &len);
2658
2659 fields[field_count].tap = tap;
2660 fields[field_count].num_bits = bits;
2661 fields[field_count].out_value = malloc(CEIL(bits, 8));
2662 str_to_buf(str, len, fields[field_count].out_value, bits, 0);
2663 fields[field_count].in_value = fields[field_count].out_value;
2664 field_count++;
2665 }
2666
2667 jtag_add_dr_scan(num_fields, fields, endstate);
2668
2669 retval = jtag_execute_queue();
2670 if (retval != ERROR_OK)
2671 {
2672 Jim_SetResultString(interp, "drscan: jtag execute failed",-1);
2673 return JIM_ERR;
2674 }
2675
2676 field_count=0;
2677 Jim_Obj *list = Jim_NewListObj(interp, NULL, 0);
2678 for (i = 2; i < argc; i+=2)
2679 {
2680 long bits;
2681 char *str;
2682
2683 Jim_GetLong(interp, args[i], &bits);
2684 str = buf_to_str(fields[field_count].in_value, bits, 16);
2685 free(fields[field_count].out_value);
2686
2687 Jim_ListAppendElement(interp, list, Jim_NewStringObj(interp, str, strlen(str)));
2688 free(str);
2689 field_count++;
2690 }
2691
2692 Jim_SetResult(interp, list);
2693
2694 free(fields);
2695
2696 return JIM_OK;
2697 }
2698
2699
2700 static int Jim_Command_flush_count(Jim_Interp *interp, int argc, Jim_Obj *const *args)
2701 {
2702 Jim_SetResult(interp, Jim_NewIntObj(interp, jtag_flush_queue_count));
2703
2704 return JIM_OK;
2705 }
2706
2707
2708 static int handle_verify_ircapture_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2709 {
2710 if (argc == 1)
2711 {
2712 if (strcmp(args[0], "enable") == 0)
2713 {
2714 jtag_verify_capture_ir = 1;
2715 }
2716 else if (strcmp(args[0], "disable") == 0)
2717 {
2718 jtag_verify_capture_ir = 0;
2719 } else
2720 {
2721 return ERROR_COMMAND_SYNTAX_ERROR;
2722 }
2723 } else if (argc != 0)
2724 {
2725 return ERROR_COMMAND_SYNTAX_ERROR;
2726 }
2727
2728 command_print(cmd_ctx, "verify Capture-IR is %s", (jtag_verify_capture_ir) ? "enabled": "disabled");
2729
2730 return ERROR_OK;
2731 }
2732
2733 static int handle_verify_jtag_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2734 {
2735 if (argc == 1)
2736 {
2737 if (strcmp(args[0], "enable") == 0)
2738 {
2739 jtag_verify = 1;
2740 }
2741 else if (strcmp(args[0], "disable") == 0)
2742 {
2743 jtag_verify = 0;
2744 } else
2745 {
2746 return ERROR_COMMAND_SYNTAX_ERROR;
2747 }
2748 } else if (argc != 0)
2749 {
2750 return ERROR_COMMAND_SYNTAX_ERROR;
2751 }
2752
2753 command_print(cmd_ctx, "verify jtag capture is %s", (jtag_verify) ? "enabled": "disabled");
2754
2755 return ERROR_OK;
2756 }
2757
2758
2759 int jtag_power_dropout(int *dropout)
2760 {
2761 return jtag->power_dropout(dropout);
2762 }
2763
2764 int jtag_srst_asserted(int *srst_asserted)
2765 {
2766 return jtag->srst_asserted(srst_asserted);
2767 }
2768
2769 void jtag_tap_handle_event( jtag_tap_t * tap, enum jtag_tap_event e)
2770 {
2771 jtag_tap_event_action_t * jteap;
2772 int done;
2773
2774 jteap = tap->event_action;
2775
2776 done = 0;
2777 while (jteap) {
2778 if (jteap->event == e) {
2779 done = 1;
2780 LOG_DEBUG( "JTAG tap: %s event: %d (%s) action: %s\n",
2781 tap->dotted_name,
2782 e,
2783 Jim_Nvp_value2name_simple(nvp_jtag_tap_event, e)->name,
2784 Jim_GetString(jteap->body, NULL) );
2785 if (Jim_EvalObj(interp, jteap->body) != JIM_OK) {
2786 Jim_PrintErrorMessage(interp);
2787 }
2788 }
2789
2790 jteap = jteap->next;
2791 }
2792
2793 if (!done) {
2794 LOG_DEBUG( "event %d %s - no action",
2795 e,
2796 Jim_Nvp_value2name_simple( nvp_jtag_tap_event, e)->name);
2797 }
2798 }
2799
2800 /*-----<Cable Helper API>---------------------------------------*/
2801
2802 /* these Cable Helper API functions are all documented in the jtag.h header file,
2803 using a Doxygen format. And since Doxygen's configuration file "Doxyfile",
2804 is setup to prefer its docs in the header file, no documentation is here, for
2805 if it were, it would have to be doubly maintained.
2806 */
2807
2808 /**
2809 * @see tap_set_state() and tap_get_state() accessors.
2810 * Actual name is not important since accessors hide it.
2811 */
2812 static tap_state_t state_follower = TAP_RESET;
2813
2814 void tap_set_state_impl( tap_state_t new_state )
2815 {
2816 /* this is the state we think the TAPs are in now, was cur_state */
2817 state_follower = new_state;
2818 }
2819
2820 tap_state_t tap_get_state()
2821 {
2822 return state_follower;
2823 }
2824
2825 /**
2826 * @see tap_set_end_state() and tap_get_end_state() accessors.
2827 * Actual name is not important because accessors hide it.
2828 */
2829 static tap_state_t end_state_follower = TAP_RESET;
2830
2831 void tap_set_end_state( tap_state_t new_end_state )
2832 {
2833 /* this is the state we think the TAPs will be in at completion of the
2834 current TAP operation, was end_state
2835 */
2836 end_state_follower = new_end_state;
2837 }
2838
2839 tap_state_t tap_get_end_state()
2840 {
2841 return end_state_follower;
2842 }
2843
2844
2845 int tap_move_ndx( tap_state_t astate )
2846 {
2847 /* given a stable state, return the index into the tms_seqs[] array within tap_get_tms_path() */
2848
2849 int ndx;
2850
2851 switch( astate )
2852 {
2853 case TAP_RESET: ndx = 0; break;
2854 case TAP_DRSHIFT: ndx = 2; break;
2855 case TAP_DRPAUSE: ndx = 3; break;
2856 case TAP_IDLE: ndx = 1; break;
2857 case TAP_IRSHIFT: ndx = 4; break;
2858 case TAP_IRPAUSE: ndx = 5; break;
2859 default:
2860 LOG_ERROR( "fatal: unstable state \"%s\" used in tap_move_ndx()", tap_state_name(astate) );
2861 exit(1);
2862 }
2863
2864 return ndx;
2865 }
2866
2867
2868 /* tap_move[i][j]: tap movement command to go from state i to state j
2869 * 0: Test-Logic-Reset
2870 * 1: Run-Test/Idle
2871 * 2: Shift-DR
2872 * 3: Pause-DR
2873 * 4: Shift-IR
2874 * 5: Pause-IR
2875 *
2876 * DRSHIFT->DRSHIFT and IRSHIFT->IRSHIFT have to be caught in interface specific code
2877 */
2878 struct tms_sequences
2879 {
2880 u8 bits;
2881 u8 bit_count;
2882
2883 };
2884
2885 /*
2886 * These macros allow us to specify TMS state transitions by bits rather than hex bytes.
2887 * Read the bits from LSBit first to MSBit last (right-to-left).
2888 */
2889 #define HEX__(n) 0x##n##LU
2890
2891 #define B8__(x) \
2892 (((x) & 0x0000000FLU)?(1<<0):0) \
2893 +(((x) & 0x000000F0LU)?(1<<1):0) \
2894 +(((x) & 0x00000F00LU)?(1<<2):0) \
2895 +(((x) & 0x0000F000LU)?(1<<3):0) \
2896 +(((x) & 0x000F0000LU)?(1<<4):0) \
2897 +(((x) & 0x00F00000LU)?(1<<5):0) \
2898 +(((x) & 0x0F000000LU)?(1<<6):0) \
2899 +(((x) & 0xF0000000LU)?(1<<7):0)
2900
2901 #define B8(bits,count) { ((u8)B8__(HEX__(bits))), (count) }
2902
2903 static const struct tms_sequences old_tms_seqs[6][6] = /* [from_state_ndx][to_state_ndx] */
2904 {
2905 /* value clocked to TMS to move from one of six stable states to another.
2906 * N.B. OOCD clocks TMS from LSB first, so read these right-to-left.
2907 * N.B. These values are tightly bound to the table in tap_get_tms_path_len().
2908 * N.B. Reset only needs to be 0b11111, but in JLink an even byte of 1's is more stable.
2909 * These extra ones cause no TAP state problem, because we go into reset and stay in reset.
2910 */
2911
2912
2913
2914 /* to state: */
2915 /* RESET IDLE DRSHIFT DRPAUSE IRSHIFT IRPAUSE */ /* from state: */
2916 { B8(1111111,7), B8(0000000,7), B8(0010111,7), B8(0001010,7), B8(0011011,7), B8(0010110,7) }, /* RESET */
2917 { B8(1111111,7), B8(0000000,7), B8(0100101,7), B8(0000101,7), B8(0101011,7), B8(0001011,7) }, /* IDLE */
2918 { B8(1111111,7), B8(0110001,7), B8(0000000,7), B8(0000001,7), B8(0001111,7), B8(0101111,7) }, /* DRSHIFT */
2919 { B8(1111111,7), B8(0110000,7), B8(0100000,7), B8(0010111,7), B8(0011110,7), B8(0101111,7) }, /* DRPAUSE */
2920 { B8(1111111,7), B8(0110001,7), B8(0000111,7), B8(0010111,7), B8(0000000,7), B8(0000001,7) }, /* IRSHIFT */
2921 { B8(1111111,7), B8(0110000,7), B8(0011100,7), B8(0010111,7), B8(0011110,7), B8(0101111,7) }, /* IRPAUSE */
2922 };
2923
2924
2925
2926 static const struct tms_sequences short_tms_seqs[6][6] = /* [from_state_ndx][to_state_ndx] */
2927 {
2928 /* this is the table submitted by Jeff Williams on 3/30/2009 with this comment:
2929
2930 OK, I added Peter's version of the state table, and it works OK for
2931 me on MC1322x. I've recreated the jlink portion of patch with this
2932 new state table. His changes to my state table are pretty minor in
2933 terms of total transitions, but Peter feels that his version fixes
2934 some long-standing problems.
2935 Jeff
2936
2937 I added the bit count into the table, reduced RESET column to 7 bits from 8.
2938 Dick
2939
2940 state specific comments:
2941 ------------------------
2942 *->RESET tried the 5 bit reset and it gave me problems, 7 bits seems to
2943 work better on ARM9 with ft2232 driver. (Dick)
2944
2945 RESET->DRSHIFT add 1 extra clock cycles in the RESET state before advancing.
2946 needed on ARM9 with ft2232 driver. (Dick)
2947
2948 RESET->IRSHIFT add 1 extra clock cycles in the RESET state before advancing.
2949 needed on ARM9 with ft2232 driver. (Dick)
2950 */
2951
2952 /* to state: */
2953 /* RESET IDLE DRSHIFT DRPAUSE IRSHIFT IRPAUSE */ /* from state: */
2954 { B8(1111111,7), B8(0000000,7), B8(0010111,7), B8(0001010,7), B8(0011011,7), B8(0010110,7) }, /* RESET */
2955 { B8(1111111,7), B8(0000000,7), B8(001,3), B8(0101,4), B8(0011,4), B8(01011,5) }, /* IDLE */
2956 { B8(1111111,7), B8(011,3), B8(00111,5), B8(01,2), B8(001111,6), B8(0101111,7) }, /* DRSHIFT */
2957 { B8(1111111,7), B8(011,3), B8(01,2), B8(0,1), B8(001111,6), B8(0101111,7) }, /* DRPAUSE */
2958 { B8(1111111,7), B8(011,3), B8(00111,5), B8(010111,6), B8(001111,6), B8(01,2) }, /* IRSHIFT */
2959 { B8(1111111,7), B8(011,3), B8(00111,5), B8(010111,6), B8(01,2), B8(0,1) } /* IRPAUSE */
2960
2961 };
2962
2963 typedef const struct tms_sequences tms_table[6][6];
2964
2965 static tms_table *tms_seqs=&short_tms_seqs;
2966
2967 int tap_get_tms_path( tap_state_t from, tap_state_t to )
2968 {
2969 return (*tms_seqs)[tap_move_ndx(from)][tap_move_ndx(to)].bits;
2970 }
2971
2972
2973 int tap_get_tms_path_len( tap_state_t from, tap_state_t to )
2974 {
2975 return (*tms_seqs)[tap_move_ndx(from)][tap_move_ndx(to)].bit_count;
2976 }
2977
2978
2979 bool tap_is_state_stable(tap_state_t astate)
2980 {
2981 bool is_stable;
2982
2983 /* A switch() is used because it is symbol dependent
2984 (not value dependent like an array), and can also check bounds.
2985 */
2986 switch( astate )
2987 {
2988 case TAP_RESET:
2989 case TAP_IDLE:
2990 case TAP_DRSHIFT:
2991 case TAP_DRPAUSE:
2992 case TAP_IRSHIFT:
2993 case TAP_IRPAUSE:
2994 is_stable = true;
2995 break;
2996 default:
2997 is_stable = false;
2998 }
2999
3000 return is_stable;
3001 }
3002
3003 tap_state_t tap_state_transition(tap_state_t cur_state, bool tms)
3004 {
3005 tap_state_t new_state;
3006
3007 /* A switch is used because it is symbol dependent and not value dependent
3008 like an array. Also it can check for out of range conditions.
3009 */
3010
3011 if (tms)
3012 {
3013 switch (cur_state)
3014 {
3015 case TAP_RESET:
3016 new_state = cur_state;
3017 break;
3018 case TAP_IDLE:
3019 case TAP_DRUPDATE:
3020 case TAP_IRUPDATE:
3021 new_state = TAP_DRSELECT;
3022 break;
3023 case TAP_DRSELECT:
3024 new_state = TAP_IRSELECT;
3025 break;
3026 case TAP_DRCAPTURE:
3027 case TAP_DRSHIFT:
3028 new_state = TAP_DREXIT1;
3029 break;
3030 case TAP_DREXIT1:
3031 case TAP_DREXIT2:
3032 new_state = TAP_DRUPDATE;
3033 break;
3034 case TAP_DRPAUSE:
3035 new_state = TAP_DREXIT2;
3036 break;
3037 case TAP_IRSELECT:
3038 new_state = TAP_RESET;
3039 break;
3040 case TAP_IRCAPTURE:
3041 case TAP_IRSHIFT:
3042 new_state = TAP_IREXIT1;
3043 break;
3044 case TAP_IREXIT1:
3045 case TAP_IREXIT2:
3046 new_state = TAP_IRUPDATE;
3047 break;
3048 case TAP_IRPAUSE:
3049 new_state = TAP_IREXIT2;
3050 break;
3051 default:
3052 LOG_ERROR( "fatal: invalid argument cur_state=%d", cur_state );
3053 exit(1);
3054 break;
3055 }
3056 }
3057 else
3058 {
3059 switch (cur_state)
3060 {
3061 case TAP_RESET:
3062 case TAP_IDLE:
3063 case TAP_DRUPDATE:
3064 case TAP_IRUPDATE:
3065 new_state = TAP_IDLE;
3066 break;
3067 case TAP_DRSELECT:
3068 new_state = TAP_DRCAPTURE;
3069 break;
3070 case TAP_DRCAPTURE:
3071 case TAP_DRSHIFT:
3072 case TAP_DREXIT2:
3073 new_state = TAP_DRSHIFT;
3074 break;
3075 case TAP_DREXIT1:
3076 case TAP_DRPAUSE:
3077 new_state = TAP_DRPAUSE;
3078 break;
3079 case TAP_IRSELECT:
3080 new_state = TAP_IRCAPTURE;
3081 break;
3082 case TAP_IRCAPTURE:
3083 case TAP_IRSHIFT:
3084 case TAP_IREXIT2:
3085 new_state = TAP_IRSHIFT;
3086 break;
3087 case TAP_IREXIT1:
3088 case TAP_IRPAUSE:
3089 new_state = TAP_IRPAUSE;
3090 break;
3091 default:
3092 LOG_ERROR( "fatal: invalid argument cur_state=%d", cur_state );
3093 exit(1);
3094 break;
3095 }
3096 }
3097
3098 return new_state;
3099 }
3100
3101 const char* tap_state_name(tap_state_t state)
3102 {
3103 const char* ret;
3104
3105 switch( state )
3106 {
3107 case TAP_RESET: ret = "RESET"; break;
3108 case TAP_IDLE: ret = "RUN/IDLE"; break;
3109 case TAP_DRSELECT: ret = "DRSELECT"; break;
3110 case TAP_DRCAPTURE: ret = "DRCAPTURE"; break;
3111 case TAP_DRSHIFT: ret = "DRSHIFT"; break;
3112 case TAP_DREXIT1: ret = "DREXIT1"; break;
3113 case TAP_DRPAUSE: ret = "DRPAUSE"; break;
3114 case TAP_DREXIT2: ret = "DREXIT2"; break;
3115 case TAP_DRUPDATE: ret = "DRUPDATE"; break;
3116 case TAP_IRSELECT: ret = "IRSELECT"; break;
3117 case TAP_IRCAPTURE: ret = "IRCAPTURE"; break;
3118 case TAP_IRSHIFT: ret = "IRSHIFT"; break;
3119 case TAP_IREXIT1: ret = "IREXIT1"; break;
3120 case TAP_IRPAUSE: ret = "IRPAUSE"; break;
3121 case TAP_IREXIT2: ret = "IREXIT2"; break;
3122 case TAP_IRUPDATE: ret = "IRUPDATE"; break;
3123 default: ret = "???";
3124 }
3125
3126 return ret;
3127 }
3128
3129 static tap_state_t tap_state_by_name( const char *name )
3130 {
3131 tap_state_t x;
3132
3133 for( x = 0 ; x < TAP_NUM_STATES ; x++ ){
3134 /* be nice to the human */
3135 if( 0 == strcasecmp( name, tap_state_name(x) ) ){
3136 return x;
3137 }
3138 }
3139 /* not found */
3140 return TAP_INVALID;
3141 }
3142
3143 #ifdef _DEBUG_JTAG_IO_
3144
3145 #define JTAG_DEBUG_STATE_APPEND(buf, len, bit) \
3146 do { buf[len] = bit ? '1' : '0'; } while(0)
3147 #define JTAG_DEBUG_STATE_PRINT(a, b, astr, bstr) \
3148 DEBUG_JTAG_IO("TAP/SM: %9s -> %5s\tTMS: %s\tTDI: %s", \
3149 tap_state_name(a), tap_state_name(b), astr, bstr)
3150
3151 tap_state_t jtag_debug_state_machine(const void *tms_buf, const void *tdi_buf,
3152 unsigned tap_bits, tap_state_t next_state)
3153 {
3154 const u8 *tms_buffer;
3155 const u8 *tdi_buffer;
3156 unsigned tap_bytes;
3157 unsigned cur_byte;
3158 unsigned cur_bit;
3159
3160 unsigned tap_out_bits;
3161 char tms_str[33];
3162 char tdi_str[33];
3163
3164 tap_state_t last_state;
3165
3166 // set startstate (and possibly last, if tap_bits == 0)
3167 last_state = next_state;
3168 DEBUG_JTAG_IO("TAP/SM: START state: %s", tap_state_name(next_state));
3169
3170 tms_buffer = (const u8 *)tms_buf;
3171 tdi_buffer = (const u8 *)tdi_buf;
3172
3173 tap_bytes = TAP_SCAN_BYTES(tap_bits);
3174 DEBUG_JTAG_IO("TAP/SM: TMS bits: %u (bytes: %u)", tap_bits, tap_bytes);
3175
3176 tap_out_bits = 0;
3177 for(cur_byte = 0; cur_byte < tap_bytes; cur_byte++)
3178 {
3179 for(cur_bit = 0; cur_bit < 8; cur_bit++)
3180 {
3181 // make sure we do not run off the end of the buffers
3182 unsigned tap_bit = cur_byte * 8 + cur_bit;
3183 if (tap_bit == tap_bits)
3184 break;
3185
3186 // check and save TMS bit
3187 tap_bit = !!(tms_buffer[cur_byte] & (1 << cur_bit));
3188 JTAG_DEBUG_STATE_APPEND(tms_str, tap_out_bits, tap_bit);
3189
3190 // use TMS bit to find the next TAP state
3191 next_state = tap_state_transition(last_state, tap_bit);
3192
3193 // check and store TDI bit
3194 tap_bit = !!(tdi_buffer[cur_byte] & (1 << cur_bit));
3195 JTAG_DEBUG_STATE_APPEND(tdi_str, tap_out_bits, tap_bit);
3196
3197 // increment TAP bits
3198 tap_out_bits++;
3199
3200 // Only show TDO bits on state transitions, or
3201 // after some number of bits in the same state.
3202 if ((next_state == last_state) && (tap_out_bits < 32))
3203 continue;
3204
3205 // terminate strings and display state transition
3206 tms_str[tap_out_bits] = tdi_str[tap_out_bits] = 0;
3207 JTAG_DEBUG_STATE_PRINT(last_state, next_state, tms_str, tdi_str);
3208
3209 // reset state
3210 last_state = next_state;
3211 tap_out_bits = 0;
3212 }
3213 }
3214
3215 if (tap_out_bits)
3216 {
3217 // terminate strings and display state transition
3218 tms_str[tap_out_bits] = tdi_str[tap_out_bits] = 0;
3219 JTAG_DEBUG_STATE_PRINT(last_state, next_state, tms_str, tdi_str);
3220 }
3221
3222 DEBUG_JTAG_IO("TAP/SM: FINAL state: %s", tap_state_name(next_state));
3223
3224 return next_state;
3225 }
3226 #endif // _DEBUG_JTAG_IO_
3227
3228 static int handle_tms_sequence_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
3229 {
3230 if (argc == 1)
3231 {
3232 if (strcmp(args[0], "short") == 0)
3233 {
3234 tms_seqs=&short_tms_seqs;
3235 }
3236 else if (strcmp(args[0], "long") == 0)
3237 {
3238 tms_seqs=&old_tms_seqs;
3239 } else
3240 {
3241 return ERROR_COMMAND_SYNTAX_ERROR;
3242 }
3243 } else if (argc != 0)
3244 {
3245 return ERROR_COMMAND_SYNTAX_ERROR;
3246 }
3247
3248 command_print(cmd_ctx, "tms sequence is %s", (tms_seqs==&short_tms_seqs) ? "short": "long");
3249
3250 return ERROR_OK;
3251 }
3252
3253 /*-----</Cable Helper API>--------------------------------------*/
3254
3255
3256 /**
3257 * Function jtag_add_statemove
3258 * moves from the current state to the goal \a state. This needs
3259 * to be handled according to the xsvf spec, see the XSTATE command
3260 * description.
3261 */
3262 int jtag_add_statemove(tap_state_t goal_state)
3263 {
3264 int retval = ERROR_OK;
3265
3266 tap_state_t moves[8];
3267 tap_state_t cur_state = cmd_queue_cur_state;
3268 int i;
3269 int tms_bits;
3270 int tms_count;
3271
3272 LOG_DEBUG( "cur_state=%s goal_state=%s",
3273 tap_state_name(cur_state),
3274 tap_state_name(goal_state) );
3275
3276
3277 /* From the XSVF spec, pertaining to XSTATE:
3278
3279 For special states known as stable states (Test-Logic-Reset,
3280 Run-Test/Idle, Pause-DR, Pause- IR), an XSVF interpreter follows
3281 predefined TAP state paths when the starting state is a stable state and
3282 when the XSTATE specifies a new stable state (see the STATE command in
3283 the [Ref 5] for the TAP state paths between stable states). For
3284 non-stable states, XSTATE should specify a state that is only one TAP
3285 state transition distance from the current TAP state to avoid undefined
3286 TAP state paths. A sequence of multiple XSTATE commands can be issued to
3287 transition the TAP through a specific state path.
3288 */
3289
3290 if (goal_state==cur_state )
3291 ; /* nothing to do */
3292
3293 else if( goal_state==TAP_RESET )
3294 {
3295 jtag_add_tlr();
3296 }
3297
3298 else if( tap_is_state_stable(cur_state) && tap_is_state_stable(goal_state) )
3299 {
3300 /* note: unless tms_bits holds a path that agrees with [Ref 5] in above
3301 spec, then this code is not fully conformant to the xsvf spec. This
3302 puts a burden on tap_get_tms_path() function from the xsvf spec.
3303 If in doubt, you should confirm that that burden is being met.
3304 */
3305
3306 tms_bits = tap_get_tms_path(cur_state, goal_state);
3307 tms_count = tap_get_tms_path_len(cur_state, goal_state);
3308
3309 assert( (unsigned) tms_count < DIM(moves) );
3310
3311 for (i=0; i<tms_count; i++, tms_bits>>=1)
3312 {
3313 bool bit = tms_bits & 1;
3314
3315 cur_state = tap_state_transition(cur_state, bit);
3316 moves[i] = cur_state;
3317 }
3318
3319 jtag_add_pathmove(tms_count, moves);
3320 }
3321
3322 /* else state must be immediately reachable in one clock cycle, and does not
3323 need to be a stable state.
3324 */
3325 else if( tap_state_transition(cur_state, true) == goal_state
3326 || tap_state_transition(cur_state, false) == goal_state )
3327 {
3328 /* move a single state */
3329 moves[0] = goal_state;
3330 jtag_add_pathmove( 1, moves );
3331 }
3332
3333 else
3334 {
3335 retval = ERROR_FAIL;
3336 }
3337
3338 return retval;
3339 }
3340
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