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Finish removing '#ifdef HAVE_JTAG_MINIDRIVER_H' from jtag.h:
[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_INTERFACE_H
32 #include "jtag.h"
33 #include "minidriver.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_alloc_in_value32(scan_field_t *field)
530 {
531 interface_jtag_alloc_in_value32(field);
532 }
533
534 void jtag_add_ir_scan_noverify(int in_num_fields, const scan_field_t *in_fields, tap_state_t state)
535 {
536 int retval;
537 jtag_prelude(state);
538
539 retval=interface_jtag_add_ir_scan(in_num_fields, in_fields, cmd_queue_end_state);
540 if (retval!=ERROR_OK)
541 jtag_error=retval;
542
543 }
544
545
546 /**
547 * Generate an IR SCAN with a list of scan fields with one entry for each enabled TAP.
548 *
549 * If the input field list contains an instruction value for a TAP then that is used
550 * otherwise the TAP is set to bypass.
551 *
552 * TAPs for which no fields are passed are marked as bypassed for subsequent DR SCANs.
553 *
554 */
555 void jtag_add_ir_scan(int in_num_fields, scan_field_t *in_fields, tap_state_t state)
556 {
557 if (jtag_verify&&jtag_verify_capture_ir)
558 {
559 /* 8 x 32 bit id's is enough for all invocations */
560
561 for (int j = 0; j < in_num_fields; j++)
562 {
563 /* if we are to run a verification of the ir scan, we need to get the input back.
564 * We may have to allocate space if the caller didn't ask for the input back.
565 */
566 in_fields[j].check_value=in_fields[j].tap->expected;
567 in_fields[j].check_mask=in_fields[j].tap->expected_mask;
568 }
569 jtag_add_scan_check(jtag_add_ir_scan_noverify, in_num_fields, in_fields, state);
570 } else
571 {
572 jtag_add_ir_scan_noverify(in_num_fields, in_fields, state);
573 }
574 }
575
576 /**
577 * Duplicate the scan fields passed into the function into an IR SCAN command
578 *
579 * This function assumes that the caller handles extra fields for bypassed TAPs
580 *
581 */
582 void jtag_add_plain_ir_scan(int in_num_fields, const scan_field_t *in_fields, tap_state_t state)
583 {
584 int retval;
585
586 jtag_prelude(state);
587
588 retval=interface_jtag_add_plain_ir_scan(in_num_fields, in_fields, cmd_queue_end_state);
589 if (retval!=ERROR_OK)
590 jtag_error=retval;
591 }
592
593 void jtag_add_callback(jtag_callback1_t f, u8 *in)
594 {
595 interface_jtag_add_callback(f, in);
596 }
597
598 void jtag_add_callback4(jtag_callback_t f, u8 *in,
599 jtag_callback_data_t data1, jtag_callback_data_t data2,
600 jtag_callback_data_t data3)
601 {
602 interface_jtag_add_callback4(f, in, data1, data2, data3);
603 }
604
605 int jtag_check_value_inner(u8 *captured, u8 *in_check_value, u8 *in_check_mask, int num_bits);
606
607 static int jtag_check_value_mask_callback(u8 *in, jtag_callback_data_t data1, jtag_callback_data_t data2, jtag_callback_data_t data3)
608 {
609 return jtag_check_value_inner(in, (u8 *)data1, (u8 *)data2, (int)data3);
610 }
611
612 static void jtag_add_scan_check(void (*jtag_add_scan)(int in_num_fields, const scan_field_t *in_fields, tap_state_t state),
613 int in_num_fields, scan_field_t *in_fields, tap_state_t state)
614 {
615 for (int i = 0; i < in_num_fields; i++)
616 {
617 struct scan_field_s *field = &in_fields[i];
618 field->allocated = 0;
619 field->modified = 0;
620 if (field->check_value || field->in_value)
621 continue;
622 interface_jtag_add_scan_check_alloc(field);
623 field->modified = 1;
624 }
625
626 jtag_add_scan(in_num_fields, in_fields, state);
627
628 for (int i = 0; i < in_num_fields; i++)
629 {
630 if ((in_fields[i].check_value != NULL) && (in_fields[i].in_value != NULL))
631 {
632 /* this is synchronous for a minidriver */
633 jtag_add_callback4(jtag_check_value_mask_callback, in_fields[i].in_value,
634 (jtag_callback_data_t)in_fields[i].check_value,
635 (jtag_callback_data_t)in_fields[i].check_mask,
636 (jtag_callback_data_t)in_fields[i].num_bits);
637 }
638 if (in_fields[i].allocated)
639 {
640 free(in_fields[i].in_value);
641 }
642 if (in_fields[i].modified)
643 {
644 in_fields[i].in_value = NULL;
645 }
646 }
647 }
648
649 void jtag_add_dr_scan_check(int in_num_fields, scan_field_t *in_fields, tap_state_t state)
650 {
651 if (jtag_verify)
652 {
653 jtag_add_scan_check(jtag_add_dr_scan, in_num_fields, in_fields, state);
654 } else
655 {
656 jtag_add_dr_scan(in_num_fields, in_fields, state);
657 }
658 }
659
660
661 /**
662 * Generate a DR SCAN using the fields passed to the function
663 *
664 * For not bypassed TAPs the function checks in_fields and uses fields specified there.
665 * For bypassed TAPs the function generates a dummy 1bit field.
666 *
667 * The bypass status of TAPs is set by jtag_add_ir_scan().
668 *
669 */
670 void jtag_add_dr_scan(int in_num_fields, const scan_field_t *in_fields, tap_state_t state)
671 {
672 int retval;
673
674 jtag_prelude(state);
675
676 retval=interface_jtag_add_dr_scan(in_num_fields, in_fields, cmd_queue_end_state);
677 if (retval!=ERROR_OK)
678 jtag_error=retval;
679 }
680
681
682
683 /**
684 * Duplicate the scan fields passed into the function into a DR SCAN command
685 *
686 * This function assumes that the caller handles extra fields for bypassed TAPs
687 *
688 */
689 void jtag_add_plain_dr_scan(int in_num_fields, const scan_field_t *in_fields, tap_state_t state)
690 {
691 int retval;
692
693 jtag_prelude(state);
694
695 retval=interface_jtag_add_plain_dr_scan(in_num_fields, in_fields, cmd_queue_end_state);
696 if (retval!=ERROR_OK)
697 jtag_error=retval;
698 }
699
700 void jtag_add_dr_out(jtag_tap_t* tap,
701 int num_fields, const int* num_bits, const u32* value,
702 tap_state_t end_state)
703 {
704 if (end_state != TAP_INVALID)
705 cmd_queue_end_state = end_state;
706
707 cmd_queue_cur_state = cmd_queue_end_state;
708
709 interface_jtag_add_dr_out(tap,
710 num_fields, num_bits, value,
711 cmd_queue_end_state);
712 }
713
714 void jtag_add_tlr(void)
715 {
716 jtag_prelude(TAP_RESET);
717
718 int retval;
719 retval=interface_jtag_add_tlr();
720 if (retval!=ERROR_OK)
721 jtag_error=retval;
722 }
723
724 void jtag_add_pathmove(int num_states, const tap_state_t *path)
725 {
726 tap_state_t cur_state = cmd_queue_cur_state;
727 int i;
728 int retval;
729
730 /* the last state has to be a stable state */
731 if (!tap_is_state_stable(path[num_states - 1]))
732 {
733 LOG_ERROR("BUG: TAP path doesn't finish in a stable state");
734 exit(-1);
735 }
736
737 for (i=0; i<num_states; i++)
738 {
739 if (path[i] == TAP_RESET)
740 {
741 LOG_ERROR("BUG: TAP_RESET is not a valid state for pathmove sequences");
742 exit(-1);
743 }
744
745 if ( tap_state_transition(cur_state, true) != path[i]
746 && tap_state_transition(cur_state, false) != path[i])
747 {
748 LOG_ERROR("BUG: %s -> %s isn't a valid TAP transition", tap_state_name(cur_state), tap_state_name(path[i]));
749 exit(-1);
750 }
751 cur_state = path[i];
752 }
753
754 jtag_prelude1();
755
756 retval = interface_jtag_add_pathmove(num_states, path);
757 cmd_queue_cur_state = path[num_states - 1];
758 if (retval!=ERROR_OK)
759 jtag_error=retval;
760 }
761
762 void jtag_add_runtest(int num_cycles, tap_state_t state)
763 {
764 int retval;
765
766 jtag_prelude(state);
767
768 /* executed by sw or hw fifo */
769 retval=interface_jtag_add_runtest(num_cycles, cmd_queue_end_state);
770 if (retval!=ERROR_OK)
771 jtag_error=retval;
772 }
773
774
775 void jtag_add_clocks( int num_cycles )
776 {
777 int retval;
778
779 if( !tap_is_state_stable(cmd_queue_cur_state) )
780 {
781 LOG_ERROR( "jtag_add_clocks() was called with TAP in non-stable state \"%s\"",
782 tap_state_name(cmd_queue_cur_state) );
783 jtag_error = ERROR_JTAG_NOT_STABLE_STATE;
784 return;
785 }
786
787 if( num_cycles > 0 )
788 {
789 jtag_prelude1();
790
791 retval = interface_jtag_add_clocks(num_cycles);
792 if (retval != ERROR_OK)
793 jtag_error=retval;
794 }
795 }
796
797 void jtag_add_reset(int req_tlr_or_trst, int req_srst)
798 {
799 int trst_with_tlr = 0;
800 int retval;
801
802 /* FIX!!! there are *many* different cases here. A better
803 * approach is needed for legal combinations of transitions...
804 */
805 if ((jtag_reset_config & RESET_HAS_SRST)&&
806 (jtag_reset_config & RESET_HAS_TRST)&&
807 ((jtag_reset_config & RESET_SRST_PULLS_TRST)==0))
808 {
809 if (((req_tlr_or_trst&&!jtag_trst)||
810 (!req_tlr_or_trst&&jtag_trst))&&
811 ((req_srst&&!jtag_srst)||
812 (!req_srst&&jtag_srst)))
813 {
814 /* FIX!!! srst_pulls_trst allows 1,1 => 0,0 transition.... */
815 //LOG_ERROR("BUG: transition of req_tlr_or_trst and req_srst in the same jtag_add_reset() call is undefined");
816 }
817 }
818
819 /* Make sure that jtag_reset_config allows the requested reset */
820 /* if SRST pulls TRST, we can't fulfill srst == 1 with trst == 0 */
821 if (((jtag_reset_config & RESET_SRST_PULLS_TRST) && (req_srst == 1)) && (!req_tlr_or_trst))
822 {
823 LOG_ERROR("BUG: requested reset would assert trst");
824 jtag_error=ERROR_FAIL;
825 return;
826 }
827
828 /* if TRST pulls SRST, we reset with TAP T-L-R */
829 if (((jtag_reset_config & RESET_TRST_PULLS_SRST) && (req_tlr_or_trst)) && (req_srst == 0))
830 {
831 trst_with_tlr = 1;
832 }
833
834 if (req_srst && !(jtag_reset_config & RESET_HAS_SRST))
835 {
836 LOG_ERROR("BUG: requested SRST assertion, but the current configuration doesn't support this");
837 jtag_error=ERROR_FAIL;
838 return;
839 }
840
841 if (req_tlr_or_trst)
842 {
843 if (!trst_with_tlr && (jtag_reset_config & RESET_HAS_TRST))
844 {
845 jtag_trst = 1;
846 } else
847 {
848 trst_with_tlr = 1;
849 }
850 } else
851 {
852 jtag_trst = 0;
853 }
854
855 jtag_srst = req_srst;
856
857 retval = interface_jtag_add_reset(jtag_trst, jtag_srst);
858 if (retval!=ERROR_OK)
859 {
860 jtag_error=retval;
861 return;
862 }
863 jtag_execute_queue();
864
865 if (jtag_srst)
866 {
867 LOG_DEBUG("SRST line asserted");
868 }
869 else
870 {
871 LOG_DEBUG("SRST line released");
872 if (jtag_nsrst_delay)
873 jtag_add_sleep(jtag_nsrst_delay * 1000);
874 }
875
876 if (trst_with_tlr)
877 {
878 LOG_DEBUG("JTAG reset with RESET instead of TRST");
879 jtag_add_end_state(TAP_RESET);
880 jtag_add_tlr();
881 jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
882 return;
883 }
884
885 if (jtag_trst)
886 {
887 /* we just asserted nTRST, so we're now in Test-Logic-Reset,
888 * and inform possible listeners about this
889 */
890 LOG_DEBUG("TRST line asserted");
891 tap_set_state(TAP_RESET);
892 jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
893 }
894 else
895 {
896 if (jtag_ntrst_delay)
897 jtag_add_sleep(jtag_ntrst_delay * 1000);
898 }
899 }
900
901 void jtag_add_end_state(tap_state_t state)
902 {
903 cmd_queue_end_state = state;
904 if ((cmd_queue_end_state == TAP_DRSHIFT)||(cmd_queue_end_state == TAP_IRSHIFT))
905 {
906 LOG_ERROR("BUG: TAP_DRSHIFT/IRSHIFT can't be end state. Calling code should use a larger scan field");
907 }
908 }
909
910 void jtag_add_sleep(u32 us)
911 {
912 keep_alive(); /* we might be running on a very slow JTAG clk */
913 int retval=interface_jtag_add_sleep(us);
914 if (retval!=ERROR_OK)
915 jtag_error=retval;
916 return;
917 }
918
919 int jtag_scan_size(const scan_command_t *cmd)
920 {
921 int bit_count = 0;
922 int i;
923
924 /* count bits in scan command */
925 for (i = 0; i < cmd->num_fields; i++)
926 {
927 bit_count += cmd->fields[i].num_bits;
928 }
929
930 return bit_count;
931 }
932
933 int jtag_build_buffer(const scan_command_t *cmd, u8 **buffer)
934 {
935 int bit_count = 0;
936 int i;
937
938 bit_count = jtag_scan_size(cmd);
939 *buffer = calloc(1,CEIL(bit_count, 8));
940
941 bit_count = 0;
942
943 #ifdef _DEBUG_JTAG_IO_
944 LOG_DEBUG("%s num_fields: %i", cmd->ir_scan ? "IRSCAN" : "DRSCAN", cmd->num_fields);
945 #endif
946
947 for (i = 0; i < cmd->num_fields; i++)
948 {
949 if (cmd->fields[i].out_value)
950 {
951 #ifdef _DEBUG_JTAG_IO_
952 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);
953 #endif
954 buf_set_buf(cmd->fields[i].out_value, 0, *buffer, bit_count, cmd->fields[i].num_bits);
955 #ifdef _DEBUG_JTAG_IO_
956 LOG_DEBUG("fields[%i].out_value[%i]: 0x%s", i, cmd->fields[i].num_bits, char_buf);
957 free(char_buf);
958 #endif
959 }
960 else
961 {
962 #ifdef _DEBUG_JTAG_IO_
963 LOG_DEBUG("fields[%i].out_value[%i]: NULL", i, cmd->fields[i].num_bits);
964 #endif
965 }
966
967 bit_count += cmd->fields[i].num_bits;
968 }
969
970 #ifdef _DEBUG_JTAG_IO_
971 //LOG_DEBUG("bit_count totalling: %i", bit_count );
972 #endif
973
974 return bit_count;
975 }
976
977 int jtag_read_buffer(u8 *buffer, const scan_command_t *cmd)
978 {
979 int i;
980 int bit_count = 0;
981 int retval;
982
983 /* we return ERROR_OK, unless a check fails, or a handler reports a problem */
984 retval = ERROR_OK;
985
986 for (i = 0; i < cmd->num_fields; i++)
987 {
988 /* if neither in_value nor in_handler
989 * are specified we don't have to examine this field
990 */
991 if (cmd->fields[i].in_value)
992 {
993 int num_bits = cmd->fields[i].num_bits;
994 u8 *captured = buf_set_buf(buffer, bit_count, malloc(CEIL(num_bits, 8)), 0, num_bits);
995
996 #ifdef _DEBUG_JTAG_IO_
997 char *char_buf = buf_to_str(captured, (num_bits > DEBUG_JTAG_IOZ) ? DEBUG_JTAG_IOZ : num_bits, 16);
998 LOG_DEBUG("fields[%i].in_value[%i]: 0x%s", i, num_bits, char_buf);
999 free(char_buf);
1000 #endif
1001
1002 if (cmd->fields[i].in_value)
1003 {
1004 buf_cpy(captured, cmd->fields[i].in_value, num_bits);
1005 }
1006
1007 free(captured);
1008 }
1009 bit_count += cmd->fields[i].num_bits;
1010 }
1011
1012 return retval;
1013 }
1014
1015 static const char *jtag_tap_name(const jtag_tap_t *tap)
1016 {
1017 return (tap == NULL) ? "(unknown)" : tap->dotted_name;
1018 }
1019
1020 int jtag_check_value_inner(u8 *captured, u8 *in_check_value, u8 *in_check_mask, int num_bits)
1021 {
1022 int retval = ERROR_OK;
1023
1024 int compare_failed = 0;
1025
1026 if (in_check_mask)
1027 compare_failed = buf_cmp_mask(captured, in_check_value, in_check_mask, num_bits);
1028 else
1029 compare_failed = buf_cmp(captured, in_check_value, num_bits);
1030
1031 if (compare_failed){
1032 /* An error handler could have caught the failing check
1033 * only report a problem when there wasn't a handler, or if the handler
1034 * acknowledged the error
1035 */
1036 /*
1037 LOG_WARNING("TAP %s:",
1038 jtag_tap_name(field->tap));
1039 */
1040 if (compare_failed)
1041 {
1042 char *captured_char = buf_to_str(captured, (num_bits > DEBUG_JTAG_IOZ) ? DEBUG_JTAG_IOZ : num_bits, 16);
1043 char *in_check_value_char = buf_to_str(in_check_value, (num_bits > DEBUG_JTAG_IOZ) ? DEBUG_JTAG_IOZ : num_bits, 16);
1044
1045 if (in_check_mask)
1046 {
1047 char *in_check_mask_char;
1048 in_check_mask_char = buf_to_str(in_check_mask, (num_bits > DEBUG_JTAG_IOZ) ? DEBUG_JTAG_IOZ : num_bits, 16);
1049 LOG_WARNING("value captured during scan didn't pass the requested check:");
1050 LOG_WARNING("captured: 0x%s check_value: 0x%s check_mask: 0x%s",
1051 captured_char, in_check_value_char, in_check_mask_char);
1052 free(in_check_mask_char);
1053 }
1054 else
1055 {
1056 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);
1057 }
1058
1059 free(captured_char);
1060 free(in_check_value_char);
1061
1062 retval = ERROR_JTAG_QUEUE_FAILED;
1063 }
1064
1065 }
1066 return retval;
1067 }
1068
1069 void jtag_check_value_mask(scan_field_t *field, u8 *value, u8 *mask)
1070 {
1071 assert(field->in_value != NULL);
1072
1073 if (value==NULL)
1074 {
1075 /* no checking to do */
1076 return;
1077 }
1078
1079 jtag_execute_queue_noclear();
1080
1081 int retval=jtag_check_value_inner(field->in_value, value, mask, field->num_bits);
1082 jtag_set_error(retval);
1083 }
1084
1085
1086
1087 enum scan_type jtag_scan_type(const scan_command_t *cmd)
1088 {
1089 int i;
1090 int type = 0;
1091
1092 for (i = 0; i < cmd->num_fields; i++)
1093 {
1094 if (cmd->fields[i].in_value)
1095 type |= SCAN_IN;
1096 if (cmd->fields[i].out_value)
1097 type |= SCAN_OUT;
1098 }
1099
1100 return type;
1101 }
1102
1103 int default_interface_jtag_execute_queue(void)
1104 {
1105 if (NULL == jtag)
1106 {
1107 LOG_ERROR("No JTAG interface configured yet. "
1108 "Issue 'init' command in startup scripts "
1109 "before communicating with targets.");
1110 return ERROR_FAIL;
1111 }
1112
1113 return jtag->execute_queue();
1114 }
1115
1116 void jtag_execute_queue_noclear(void)
1117 {
1118 /* each flush can take as much as 1-2ms on high bandwidth low latency interfaces.
1119 * E.g. a JTAG over TCP/IP or USB....
1120 */
1121 jtag_flush_queue_count++;
1122
1123 int retval=interface_jtag_execute_queue();
1124 /* we keep the first error */
1125 if ((jtag_error==ERROR_OK)&&(retval!=ERROR_OK))
1126 {
1127 jtag_error=retval;
1128 }
1129 }
1130
1131 int jtag_execute_queue(void)
1132 {
1133 int retval;
1134 jtag_execute_queue_noclear();
1135 retval=jtag_error;
1136 jtag_error=ERROR_OK;
1137 return retval;
1138 }
1139
1140 int jtag_reset_callback(enum jtag_event event, void *priv)
1141 {
1142 jtag_tap_t *tap = priv;
1143
1144 LOG_DEBUG("-");
1145
1146 if (event == JTAG_TRST_ASSERTED)
1147 {
1148 buf_set_ones(tap->cur_instr, tap->ir_length);
1149 tap->bypass = 1;
1150 }
1151
1152 return ERROR_OK;
1153 }
1154
1155 void jtag_sleep(u32 us)
1156 {
1157 alive_sleep(us/1000);
1158 }
1159
1160 /* Try to examine chain layout according to IEEE 1149.1 §12
1161 */
1162 int jtag_examine_chain(void)
1163 {
1164 jtag_tap_t *tap;
1165 scan_field_t field;
1166 u8 idcode_buffer[JTAG_MAX_CHAIN_SIZE * 4];
1167 int i;
1168 int bit_count;
1169 int device_count = 0;
1170 u8 zero_check = 0x0;
1171 u8 one_check = 0xff;
1172
1173 field.tap = NULL;
1174 field.num_bits = sizeof(idcode_buffer) * 8;
1175 field.out_value = idcode_buffer;
1176
1177 field.in_value = idcode_buffer;
1178
1179
1180
1181
1182 for (i = 0; i < JTAG_MAX_CHAIN_SIZE; i++)
1183 {
1184 buf_set_u32(idcode_buffer, i * 32, 32, 0x000000FF);
1185 }
1186
1187 jtag_add_plain_dr_scan(1, &field, TAP_RESET);
1188 jtag_execute_queue();
1189
1190 for (i = 0; i < JTAG_MAX_CHAIN_SIZE * 4; i++)
1191 {
1192 zero_check |= idcode_buffer[i];
1193 one_check &= idcode_buffer[i];
1194 }
1195
1196 /* if there wasn't a single non-zero bit or if all bits were one, the scan isn't valid */
1197 if ((zero_check == 0x00) || (one_check == 0xff))
1198 {
1199 LOG_ERROR("JTAG communication failure, check connection, JTAG interface, target power etc.");
1200 return ERROR_JTAG_INIT_FAILED;
1201 }
1202
1203 /* point at the 1st tap */
1204 tap = jtag_NextEnabledTap(NULL);
1205 if( tap == NULL ){
1206 LOG_ERROR("JTAG: No taps enabled?");
1207 return ERROR_JTAG_INIT_FAILED;
1208 }
1209
1210 for (bit_count = 0; bit_count < (JTAG_MAX_CHAIN_SIZE * 32) - 31;)
1211 {
1212 u32 idcode = buf_get_u32(idcode_buffer, bit_count, 32);
1213 if ((idcode & 1) == 0)
1214 {
1215 /* LSB must not be 0, this indicates a device in bypass */
1216 LOG_WARNING("Tap/Device does not have IDCODE");
1217 idcode=0;
1218
1219 bit_count += 1;
1220 }
1221 else
1222 {
1223 u32 manufacturer;
1224 u32 part;
1225 u32 version;
1226
1227 /* some devices, such as AVR will output all 1's instead of TDI
1228 input value at end of chain. */
1229 if ((idcode == 0x000000FF)||(idcode == 0xFFFFFFFF))
1230 {
1231 int unexpected=0;
1232 /* End of chain (invalid manufacturer ID)
1233 *
1234 * The JTAG examine is the very first thing that happens
1235 *
1236 * A single JTAG device requires only 64 bits to be read back correctly.
1237 *
1238 * The code below adds a check that the rest of the data scanned (640 bits)
1239 * are all as expected. This helps diagnose/catch problems with the JTAG chain
1240 *
1241 * earlier and gives more helpful/explicit error messages.
1242 */
1243 for (bit_count += 32; bit_count < (JTAG_MAX_CHAIN_SIZE * 32) - 31;bit_count += 32)
1244 {
1245 idcode = buf_get_u32(idcode_buffer, bit_count, 32);
1246 if (unexpected||((idcode != 0x000000FF)&&(idcode != 0xFFFFFFFF)))
1247 {
1248 LOG_WARNING("Unexpected idcode after end of chain! %d 0x%08x", bit_count, idcode);
1249 unexpected = 1;
1250 }
1251 }
1252
1253 break;
1254 }
1255
1256 #define EXTRACT_MFG(X) (((X) & 0xffe) >> 1)
1257 manufacturer = EXTRACT_MFG(idcode);
1258 #define EXTRACT_PART(X) (((X) & 0xffff000) >> 12)
1259 part = EXTRACT_PART(idcode);
1260 #define EXTRACT_VER(X) (((X) & 0xf0000000) >> 28)
1261 version = EXTRACT_VER(idcode);
1262
1263 LOG_INFO("JTAG tap: %s tap/device found: 0x%8.8x (Manufacturer: 0x%3.3x, Part: 0x%4.4x, Version: 0x%1.1x)",
1264 ((tap != NULL) ? (tap->dotted_name) : "(not-named)"),
1265 idcode, manufacturer, part, version);
1266
1267 bit_count += 32;
1268 }
1269 if (tap)
1270 {
1271 tap->idcode = idcode;
1272
1273 if (tap->expected_ids_cnt > 0) {
1274 /* Loop over the expected identification codes and test for a match */
1275 u8 ii;
1276 for (ii = 0; ii < tap->expected_ids_cnt; ii++) {
1277 if( tap->idcode == tap->expected_ids[ii] ){
1278 break;
1279 }
1280 }
1281
1282 /* If none of the expected ids matched, log an error */
1283 if (ii == tap->expected_ids_cnt) {
1284 LOG_ERROR("JTAG tap: %s got: 0x%08x (mfg: 0x%3.3x, part: 0x%4.4x, ver: 0x%1.1x)",
1285 tap->dotted_name,
1286 idcode,
1287 EXTRACT_MFG( tap->idcode ),
1288 EXTRACT_PART( tap->idcode ),
1289 EXTRACT_VER( tap->idcode ) );
1290 for (ii = 0; ii < tap->expected_ids_cnt; ii++) {
1291 LOG_ERROR("JTAG tap: %s expected %hhu of %hhu: 0x%08x (mfg: 0x%3.3x, part: 0x%4.4x, ver: 0x%1.1x)",
1292 tap->dotted_name,
1293 ii + 1,
1294 tap->expected_ids_cnt,
1295 tap->expected_ids[ii],
1296 EXTRACT_MFG( tap->expected_ids[ii] ),
1297 EXTRACT_PART( tap->expected_ids[ii] ),
1298 EXTRACT_VER( tap->expected_ids[ii] ) );
1299 }
1300
1301 return ERROR_JTAG_INIT_FAILED;
1302 } else {
1303 LOG_INFO("JTAG Tap/device matched");
1304 }
1305 } else {
1306 #if 0
1307 LOG_INFO("JTAG TAP ID: 0x%08x - Unknown - please report (A) chipname and (B) idcode to the openocd project",
1308 tap->idcode);
1309 #endif
1310 }
1311 tap = jtag_NextEnabledTap(tap);
1312 }
1313 device_count++;
1314 }
1315
1316 /* see if number of discovered devices matches configuration */
1317 if (device_count != jtag_NumEnabledTaps())
1318 {
1319 LOG_ERROR("number of discovered devices in JTAG chain (%i) doesn't match (enabled) configuration (%i), total taps: %d",
1320 device_count, jtag_NumEnabledTaps(), jtag_NumTotalTaps());
1321 LOG_ERROR("check the config file and ensure proper JTAG communication (connections, speed, ...)");
1322 return ERROR_JTAG_INIT_FAILED;
1323 }
1324
1325 return ERROR_OK;
1326 }
1327
1328 int jtag_validate_chain(void)
1329 {
1330 jtag_tap_t *tap;
1331 int total_ir_length = 0;
1332 u8 *ir_test = NULL;
1333 scan_field_t field;
1334 int chain_pos = 0;
1335
1336 tap = NULL;
1337 total_ir_length = 0;
1338 for(;;){
1339 tap = jtag_NextEnabledTap(tap);
1340 if( tap == NULL ){
1341 break;
1342 }
1343 total_ir_length += tap->ir_length;
1344 }
1345
1346 total_ir_length += 2;
1347 ir_test = malloc(CEIL(total_ir_length, 8));
1348 buf_set_ones(ir_test, total_ir_length);
1349
1350 field.tap = NULL;
1351 field.num_bits = total_ir_length;
1352 field.out_value = ir_test;
1353 field.in_value = ir_test;
1354
1355
1356 jtag_add_plain_ir_scan(1, &field, TAP_RESET);
1357 jtag_execute_queue();
1358
1359 tap = NULL;
1360 chain_pos = 0;
1361 int val;
1362 for(;;){
1363 tap = jtag_NextEnabledTap(tap);
1364 if( tap == NULL ){
1365 break;
1366 }
1367
1368 val = buf_get_u32(ir_test, chain_pos, 2);
1369 if (val != 0x1)
1370 {
1371 char *cbuf = buf_to_str(ir_test, total_ir_length, 16);
1372 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);
1373 free(cbuf);
1374 free(ir_test);
1375 return ERROR_JTAG_INIT_FAILED;
1376 }
1377 chain_pos += tap->ir_length;
1378 }
1379
1380 val = buf_get_u32(ir_test, chain_pos, 2);
1381 if (val != 0x3)
1382 {
1383 char *cbuf = buf_to_str(ir_test, total_ir_length, 16);
1384 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);
1385 free(cbuf);
1386 free(ir_test);
1387 return ERROR_JTAG_INIT_FAILED;
1388 }
1389
1390 free(ir_test);
1391
1392 return ERROR_OK;
1393 }
1394
1395 enum jtag_tap_cfg_param {
1396 JCFG_EVENT
1397 };
1398
1399 static Jim_Nvp nvp_config_opts[] = {
1400 { .name = "-event", .value = JCFG_EVENT },
1401
1402 { .name = NULL, .value = -1 }
1403 };
1404
1405 static int jtag_tap_configure_cmd( Jim_GetOptInfo *goi, jtag_tap_t * tap)
1406 {
1407 Jim_Nvp *n;
1408 Jim_Obj *o;
1409 int e;
1410
1411 /* parse config or cget options */
1412 while (goi->argc > 0) {
1413 Jim_SetEmptyResult (goi->interp);
1414
1415 e = Jim_GetOpt_Nvp(goi, nvp_config_opts, &n);
1416 if (e != JIM_OK) {
1417 Jim_GetOpt_NvpUnknown(goi, nvp_config_opts, 0);
1418 return e;
1419 }
1420
1421 switch (n->value) {
1422 case JCFG_EVENT:
1423 if (goi->argc == 0) {
1424 Jim_WrongNumArgs( goi->interp, goi->argc, goi->argv, "-event ?event-name? ..." );
1425 return JIM_ERR;
1426 }
1427
1428 e = Jim_GetOpt_Nvp( goi, nvp_jtag_tap_event, &n );
1429 if (e != JIM_OK) {
1430 Jim_GetOpt_NvpUnknown(goi, nvp_jtag_tap_event, 1);
1431 return e;
1432 }
1433
1434 if (goi->isconfigure) {
1435 if (goi->argc != 1) {
1436 Jim_WrongNumArgs(goi->interp, goi->argc, goi->argv, "-event ?event-name? ?EVENT-BODY?");
1437 return JIM_ERR;
1438 }
1439 } else {
1440 if (goi->argc != 0) {
1441 Jim_WrongNumArgs(goi->interp, goi->argc, goi->argv, "-event ?event-name?");
1442 return JIM_ERR;
1443 }
1444 }
1445
1446 {
1447 jtag_tap_event_action_t *jteap;
1448
1449 jteap = tap->event_action;
1450 /* replace existing? */
1451 while (jteap) {
1452 if (jteap->event == (enum jtag_tap_event)n->value) {
1453 break;
1454 }
1455 jteap = jteap->next;
1456 }
1457
1458 if (goi->isconfigure) {
1459 if (jteap == NULL) {
1460 /* create new */
1461 jteap = calloc(1, sizeof (*jteap));
1462 }
1463 jteap->event = n->value;
1464 Jim_GetOpt_Obj( goi, &o);
1465 if (jteap->body) {
1466 Jim_DecrRefCount(interp, jteap->body);
1467 }
1468 jteap->body = Jim_DuplicateObj(goi->interp, o);
1469 Jim_IncrRefCount(jteap->body);
1470
1471 /* add to head of event list */
1472 jteap->next = tap->event_action;
1473 tap->event_action = jteap;
1474 Jim_SetEmptyResult(goi->interp);
1475 } else {
1476 /* get */
1477 if (jteap == NULL) {
1478 Jim_SetEmptyResult(goi->interp);
1479 } else {
1480 Jim_SetResult(goi->interp, Jim_DuplicateObj(goi->interp, jteap->body));
1481 }
1482 }
1483 }
1484 /* loop for more */
1485 break;
1486 }
1487 } /* while (goi->argc) */
1488
1489 return JIM_OK;
1490 }
1491
1492 static int jim_newtap_cmd( Jim_GetOptInfo *goi )
1493 {
1494 jtag_tap_t *pTap;
1495 jtag_tap_t **ppTap;
1496 jim_wide w;
1497 int x;
1498 int e;
1499 int reqbits;
1500 Jim_Nvp *n;
1501 char *cp;
1502 const Jim_Nvp opts[] = {
1503 #define NTAP_OPT_IRLEN 0
1504 { .name = "-irlen" , .value = NTAP_OPT_IRLEN },
1505 #define NTAP_OPT_IRMASK 1
1506 { .name = "-irmask" , .value = NTAP_OPT_IRMASK },
1507 #define NTAP_OPT_IRCAPTURE 2
1508 { .name = "-ircapture" , .value = NTAP_OPT_IRCAPTURE },
1509 #define NTAP_OPT_ENABLED 3
1510 { .name = "-enable" , .value = NTAP_OPT_ENABLED },
1511 #define NTAP_OPT_DISABLED 4
1512 { .name = "-disable" , .value = NTAP_OPT_DISABLED },
1513 #define NTAP_OPT_EXPECTED_ID 5
1514 { .name = "-expected-id" , .value = NTAP_OPT_EXPECTED_ID },
1515 { .name = NULL , .value = -1 },
1516 };
1517
1518 pTap = malloc( sizeof(jtag_tap_t) );
1519 memset( pTap, 0, sizeof(*pTap) );
1520 if( !pTap ){
1521 Jim_SetResult_sprintf( goi->interp, "no memory");
1522 return JIM_ERR;
1523 }
1524 /*
1525 * we expect CHIP + TAP + OPTIONS
1526 * */
1527 if( goi->argc < 3 ){
1528 Jim_SetResult_sprintf(goi->interp, "Missing CHIP TAP OPTIONS ....");
1529 return JIM_ERR;
1530 }
1531 Jim_GetOpt_String( goi, &cp, NULL );
1532 pTap->chip = strdup(cp);
1533
1534 Jim_GetOpt_String( goi, &cp, NULL );
1535 pTap->tapname = strdup(cp);
1536
1537 /* name + dot + name + null */
1538 x = strlen(pTap->chip) + 1 + strlen(pTap->tapname) + 1;
1539 cp = malloc( x );
1540 sprintf( cp, "%s.%s", pTap->chip, pTap->tapname );
1541 pTap->dotted_name = cp;
1542
1543 LOG_DEBUG("Creating New Tap, Chip: %s, Tap: %s, Dotted: %s, %d params",
1544 pTap->chip, pTap->tapname, pTap->dotted_name, goi->argc);
1545
1546 /* default is enabled */
1547 pTap->enabled = 1;
1548
1549 /* deal with options */
1550 #define NTREQ_IRLEN 1
1551 #define NTREQ_IRCAPTURE 2
1552 #define NTREQ_IRMASK 4
1553
1554 /* clear them as we find them */
1555 reqbits = (NTREQ_IRLEN | NTREQ_IRCAPTURE | NTREQ_IRMASK);
1556
1557 while( goi->argc ){
1558 e = Jim_GetOpt_Nvp( goi, opts, &n );
1559 if( e != JIM_OK ){
1560 Jim_GetOpt_NvpUnknown( goi, opts, 0 );
1561 return e;
1562 }
1563 LOG_DEBUG("Processing option: %s", n->name );
1564 switch( n->value ){
1565 case NTAP_OPT_ENABLED:
1566 pTap->enabled = 1;
1567 break;
1568 case NTAP_OPT_DISABLED:
1569 pTap->enabled = 0;
1570 break;
1571 case NTAP_OPT_EXPECTED_ID:
1572 {
1573 u32 *new_expected_ids;
1574
1575 e = Jim_GetOpt_Wide( goi, &w );
1576 if( e != JIM_OK) {
1577 Jim_SetResult_sprintf(goi->interp, "option: %s bad parameter", n->name);
1578 return e;
1579 }
1580
1581 new_expected_ids = malloc(sizeof(u32) * (pTap->expected_ids_cnt + 1));
1582 if (new_expected_ids == NULL) {
1583 Jim_SetResult_sprintf( goi->interp, "no memory");
1584 return JIM_ERR;
1585 }
1586
1587 memcpy(new_expected_ids, pTap->expected_ids, sizeof(u32) * pTap->expected_ids_cnt);
1588
1589 new_expected_ids[pTap->expected_ids_cnt] = w;
1590
1591 free(pTap->expected_ids);
1592 pTap->expected_ids = new_expected_ids;
1593 pTap->expected_ids_cnt++;
1594 break;
1595 }
1596 case NTAP_OPT_IRLEN:
1597 case NTAP_OPT_IRMASK:
1598 case NTAP_OPT_IRCAPTURE:
1599 e = Jim_GetOpt_Wide( goi, &w );
1600 if( e != JIM_OK ){
1601 Jim_SetResult_sprintf( goi->interp, "option: %s bad parameter", n->name );
1602 return e;
1603 }
1604 if( (w < 0) || (w > 0xffff) ){
1605 /* wacky value */
1606 Jim_SetResult_sprintf( goi->interp, "option: %s - wacky value: %d (0x%x)",
1607 n->name, (int)(w), (int)(w));
1608 return JIM_ERR;
1609 }
1610 switch(n->value){
1611 case NTAP_OPT_IRLEN:
1612 pTap->ir_length = w;
1613 reqbits &= (~(NTREQ_IRLEN));
1614 break;
1615 case NTAP_OPT_IRMASK:
1616 pTap->ir_capture_mask = w;
1617 reqbits &= (~(NTREQ_IRMASK));
1618 break;
1619 case NTAP_OPT_IRCAPTURE:
1620 pTap->ir_capture_value = w;
1621 reqbits &= (~(NTREQ_IRCAPTURE));
1622 break;
1623 }
1624 } /* switch(n->value) */
1625 } /* while( goi->argc ) */
1626
1627 /* Did we get all the options? */
1628 if( reqbits ){
1629 // no
1630 Jim_SetResult_sprintf( goi->interp,
1631 "newtap: %s missing required parameters",
1632 pTap->dotted_name);
1633 /* TODO: Tell user what is missing :-( */
1634 /* no memory leaks pelase */
1635 free(((void *)(pTap->expected_ids)));
1636 free(((void *)(pTap->chip)));
1637 free(((void *)(pTap->tapname)));
1638 free(((void *)(pTap->dotted_name)));
1639 free(((void *)(pTap)));
1640 return JIM_ERR;
1641 }
1642
1643 pTap->expected = malloc( pTap->ir_length );
1644 pTap->expected_mask = malloc( pTap->ir_length );
1645 pTap->cur_instr = malloc( pTap->ir_length );
1646
1647 buf_set_u32( pTap->expected,
1648 0,
1649 pTap->ir_length,
1650 pTap->ir_capture_value );
1651 buf_set_u32( pTap->expected_mask,
1652 0,
1653 pTap->ir_length,
1654 pTap->ir_capture_mask );
1655 buf_set_ones( pTap->cur_instr,
1656 pTap->ir_length );
1657
1658 pTap->bypass = 1;
1659
1660 jtag_register_event_callback(jtag_reset_callback, pTap );
1661
1662 ppTap = &(jtag_all_taps);
1663 while( (*ppTap) != NULL ){
1664 ppTap = &((*ppTap)->next_tap);
1665 }
1666 *ppTap = pTap;
1667 {
1668 static int n_taps = 0;
1669 pTap->abs_chain_position = n_taps++;
1670 }
1671 LOG_DEBUG( "Created Tap: %s @ abs position %d, irlen %d, capture: 0x%x mask: 0x%x",
1672 (*ppTap)->dotted_name,
1673 (*ppTap)->abs_chain_position,
1674 (*ppTap)->ir_length,
1675 (*ppTap)->ir_capture_value,
1676 (*ppTap)->ir_capture_mask );
1677
1678 return ERROR_OK;
1679 }
1680
1681 static int jim_jtag_command( Jim_Interp *interp, int argc, Jim_Obj *const *argv )
1682 {
1683 Jim_GetOptInfo goi;
1684 int e;
1685 Jim_Nvp *n;
1686 Jim_Obj *o;
1687 struct command_context_s *context;
1688
1689 enum {
1690 JTAG_CMD_INTERFACE,
1691 JTAG_CMD_INIT_RESET,
1692 JTAG_CMD_NEWTAP,
1693 JTAG_CMD_TAPENABLE,
1694 JTAG_CMD_TAPDISABLE,
1695 JTAG_CMD_TAPISENABLED,
1696 JTAG_CMD_CONFIGURE,
1697 JTAG_CMD_CGET
1698 };
1699
1700 const Jim_Nvp jtag_cmds[] = {
1701 { .name = "interface" , .value = JTAG_CMD_INTERFACE },
1702 { .name = "arp_init-reset", .value = JTAG_CMD_INIT_RESET },
1703 { .name = "newtap" , .value = JTAG_CMD_NEWTAP },
1704 { .name = "tapisenabled" , .value = JTAG_CMD_TAPISENABLED },
1705 { .name = "tapenable" , .value = JTAG_CMD_TAPENABLE },
1706 { .name = "tapdisable" , .value = JTAG_CMD_TAPDISABLE },
1707 { .name = "configure" , .value = JTAG_CMD_CONFIGURE },
1708 { .name = "cget" , .value = JTAG_CMD_CGET },
1709
1710 { .name = NULL, .value = -1 },
1711 };
1712
1713 context = Jim_GetAssocData(interp, "context");
1714 /* go past the command */
1715 Jim_GetOpt_Setup( &goi, interp, argc-1, argv+1 );
1716
1717 e = Jim_GetOpt_Nvp( &goi, jtag_cmds, &n );
1718 if( e != JIM_OK ){
1719 Jim_GetOpt_NvpUnknown( &goi, jtag_cmds, 0 );
1720 return e;
1721 }
1722 Jim_SetEmptyResult( goi.interp );
1723 switch( n->value ){
1724 case JTAG_CMD_INTERFACE:
1725 /* return the name of the interface */
1726 /* TCL code might need to know the exact type... */
1727 /* FUTURE: we allow this as a means to "set" the interface. */
1728 if( goi.argc != 0 ){
1729 Jim_WrongNumArgs( goi.interp, 1, goi.argv-1, "(no params)");
1730 return JIM_ERR;
1731 }
1732 Jim_SetResultString( goi.interp, jtag_interface->name, -1 );
1733 return JIM_OK;
1734 case JTAG_CMD_INIT_RESET:
1735 if( goi.argc != 0 ){
1736 Jim_WrongNumArgs( goi.interp, 1, goi.argv-1, "(no params)");
1737 return JIM_ERR;
1738 }
1739 e = jtag_init_reset(context);
1740 if( e != ERROR_OK ){
1741 Jim_SetResult_sprintf( goi.interp, "error: %d", e);
1742 return JIM_ERR;
1743 }
1744 return JIM_OK;
1745 case JTAG_CMD_NEWTAP:
1746 return jim_newtap_cmd( &goi );
1747 break;
1748 case JTAG_CMD_TAPISENABLED:
1749 case JTAG_CMD_TAPENABLE:
1750 case JTAG_CMD_TAPDISABLE:
1751 if( goi.argc != 1 ){
1752 Jim_SetResultString( goi.interp, "Too many parameters",-1 );
1753 return JIM_ERR;
1754 }
1755
1756 {
1757 jtag_tap_t *t;
1758 t = jtag_TapByJimObj( goi.interp, goi.argv[0] );
1759 if( t == NULL ){
1760 return JIM_ERR;
1761 }
1762 switch( n->value ){
1763 case JTAG_CMD_TAPISENABLED:
1764 e = t->enabled;
1765 break;
1766 case JTAG_CMD_TAPENABLE:
1767 jtag_tap_handle_event( t, JTAG_TAP_EVENT_ENABLE);
1768 e = 1;
1769 t->enabled = e;
1770 break;
1771 case JTAG_CMD_TAPDISABLE:
1772 jtag_tap_handle_event( t, JTAG_TAP_EVENT_DISABLE);
1773 e = 0;
1774 t->enabled = e;
1775 break;
1776 }
1777 Jim_SetResult( goi.interp, Jim_NewIntObj( goi.interp, e ) );
1778 return JIM_OK;
1779 }
1780 break;
1781
1782 case JTAG_CMD_CGET:
1783 if( goi.argc < 2 ){
1784 Jim_WrongNumArgs( goi.interp, 0, NULL, "?tap-name? -option ...");
1785 return JIM_ERR;
1786 }
1787
1788 {
1789 jtag_tap_t *t;
1790
1791 Jim_GetOpt_Obj(&goi, &o);
1792 t = jtag_TapByJimObj( goi.interp, o );
1793 if( t == NULL ){
1794 return JIM_ERR;
1795 }
1796
1797 goi.isconfigure = 0;
1798 return jtag_tap_configure_cmd( &goi, t);
1799 }
1800 break;
1801
1802 case JTAG_CMD_CONFIGURE:
1803 if( goi.argc < 3 ){
1804 Jim_WrongNumArgs( goi.interp, 0, NULL, "?tap-name? -option ?VALUE? ...");
1805 return JIM_ERR;
1806 }
1807
1808 {
1809 jtag_tap_t *t;
1810
1811 Jim_GetOpt_Obj(&goi, &o);
1812 t = jtag_TapByJimObj( goi.interp, o );
1813 if( t == NULL ){
1814 return JIM_ERR;
1815 }
1816
1817 goi.isconfigure = 1;
1818 return jtag_tap_configure_cmd( &goi, t);
1819 }
1820 }
1821
1822 return JIM_ERR;
1823 }
1824
1825 int jtag_register_commands(struct command_context_s *cmd_ctx)
1826 {
1827 register_jim( cmd_ctx, "jtag", jim_jtag_command, "perform jtag tap actions");
1828
1829 register_command(cmd_ctx, NULL, "interface", handle_interface_command,
1830 COMMAND_CONFIG, "try to configure interface");
1831 register_command(cmd_ctx, NULL, "jtag_speed", handle_jtag_speed_command,
1832 COMMAND_ANY, "(DEPRECATED) set jtag speed (if supported)");
1833 register_command(cmd_ctx, NULL, "jtag_khz", handle_jtag_khz_command,
1834 COMMAND_ANY, "set maximum jtag speed (if supported); "
1835 "parameter is maximum khz, or 0 for adaptive clocking (RTCK).");
1836 register_command(cmd_ctx, NULL, "jtag_device", handle_jtag_device_command,
1837 COMMAND_CONFIG, "(DEPRECATED) jtag_device <ir_length> <ir_expected> <ir_mask>");
1838 register_command(cmd_ctx, NULL, "reset_config", handle_reset_config_command,
1839 COMMAND_ANY,
1840 "[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]");
1841 register_command(cmd_ctx, NULL, "jtag_nsrst_delay", handle_jtag_nsrst_delay_command,
1842 COMMAND_ANY, "jtag_nsrst_delay <ms> - delay after deasserting srst in ms");
1843 register_command(cmd_ctx, NULL, "jtag_ntrst_delay", handle_jtag_ntrst_delay_command,
1844 COMMAND_ANY, "jtag_ntrst_delay <ms> - delay after deasserting trst in ms");
1845
1846 register_command(cmd_ctx, NULL, "scan_chain", handle_scan_chain_command,
1847 COMMAND_EXEC, "print current scan chain configuration");
1848
1849 register_command(cmd_ctx, NULL, "endstate", handle_endstate_command,
1850 COMMAND_EXEC, "finish JTAG operations in <tap_state>");
1851 register_command(cmd_ctx, NULL, "jtag_reset", handle_jtag_reset_command,
1852 COMMAND_EXEC, "toggle reset lines <trst> <srst>");
1853 register_command(cmd_ctx, NULL, "runtest", handle_runtest_command,
1854 COMMAND_EXEC, "move to Run-Test/Idle, and execute <num_cycles>");
1855 register_command(cmd_ctx, NULL, "irscan", handle_irscan_command,
1856 COMMAND_EXEC, "execute IR scan <device> <instr> [dev2] [instr2] ...");
1857 register_jim(cmd_ctx, "drscan", Jim_Command_drscan, "execute DR scan <device> <num_bits> <value> <num_bits1> <value2> ...");
1858 register_jim(cmd_ctx, "flush_count", Jim_Command_flush_count, "returns number of times the JTAG queue has been flushed");
1859
1860 register_command(cmd_ctx, NULL, "verify_ircapture", handle_verify_ircapture_command,
1861 COMMAND_ANY, "verify value captured during Capture-IR <enable|disable>");
1862 register_command(cmd_ctx, NULL, "verify_jtag", handle_verify_jtag_command,
1863 COMMAND_ANY, "verify value capture <enable|disable>");
1864 register_command(cmd_ctx, NULL, "tms_sequence", handle_tms_sequence_command,
1865 COMMAND_ANY, "choose short(default) or long tms_sequence <short|long>");
1866 return ERROR_OK;
1867 }
1868
1869 int jtag_interface_init(struct command_context_s *cmd_ctx)
1870 {
1871 if (jtag)
1872 return ERROR_OK;
1873
1874 if (!jtag_interface)
1875 {
1876 /* nothing was previously specified by "interface" command */
1877 LOG_ERROR("JTAG interface has to be specified, see \"interface\" command");
1878 return ERROR_JTAG_INVALID_INTERFACE;
1879 }
1880 if(hasKHz)
1881 {
1882 jtag_interface->khz(speed_khz, &jtag_speed);
1883 hasKHz = 0;
1884 }
1885
1886 if (jtag_interface->init() != ERROR_OK)
1887 return ERROR_JTAG_INIT_FAILED;
1888
1889 jtag = jtag_interface;
1890 return ERROR_OK;
1891 }
1892
1893 static int jtag_init_inner(struct command_context_s *cmd_ctx)
1894 {
1895 jtag_tap_t *tap;
1896 int retval;
1897
1898 LOG_DEBUG("Init JTAG chain");
1899
1900 tap = jtag_NextEnabledTap(NULL);
1901 if( tap == NULL ){
1902 LOG_ERROR("There are no enabled taps?");
1903 return ERROR_JTAG_INIT_FAILED;
1904 }
1905
1906 jtag_add_tlr();
1907 if ((retval=jtag_execute_queue())!=ERROR_OK)
1908 return retval;
1909
1910 /* examine chain first, as this could discover the real chain layout */
1911 if (jtag_examine_chain() != ERROR_OK)
1912 {
1913 LOG_ERROR("trying to validate configured JTAG chain anyway...");
1914 }
1915
1916 if (jtag_validate_chain() != ERROR_OK)
1917 {
1918 LOG_WARNING("Could not validate JTAG chain, continuing anyway...");
1919 }
1920
1921 return ERROR_OK;
1922 }
1923
1924 int jtag_interface_quit(void)
1925 {
1926 if (!jtag || !jtag->quit)
1927 return ERROR_OK;
1928
1929 // close the JTAG interface
1930 int result = jtag->quit();
1931 if (ERROR_OK != result)
1932 LOG_ERROR("failed: %d", result);
1933
1934 return ERROR_OK;
1935 }
1936
1937
1938 int jtag_init_reset(struct command_context_s *cmd_ctx)
1939 {
1940 int retval;
1941
1942 if ((retval=jtag_interface_init(cmd_ctx)) != ERROR_OK)
1943 return retval;
1944
1945 LOG_DEBUG("Trying to bring the JTAG controller to life by asserting TRST / RESET");
1946
1947 /* Reset can happen after a power cycle.
1948 *
1949 * Ideally we would only assert TRST or run RESET before the target reset.
1950 *
1951 * However w/srst_pulls_trst, trst is asserted together with the target
1952 * reset whether we want it or not.
1953 *
1954 * NB! Some targets have JTAG circuitry disabled until a
1955 * trst & srst has been asserted.
1956 *
1957 * NB! here we assume nsrst/ntrst delay are sufficient!
1958 *
1959 * NB! order matters!!!! srst *can* disconnect JTAG circuitry
1960 *
1961 */
1962 jtag_add_reset(1, 0); /* RESET or TRST */
1963 if (jtag_reset_config & RESET_HAS_SRST)
1964 {
1965 jtag_add_reset(1, 1);
1966 if ((jtag_reset_config & RESET_SRST_PULLS_TRST)==0)
1967 jtag_add_reset(0, 1);
1968 }
1969 jtag_add_reset(0, 0);
1970 if ((retval = jtag_execute_queue()) != ERROR_OK)
1971 return retval;
1972
1973 /* Check that we can communication on the JTAG chain + eventually we want to
1974 * be able to perform enumeration only after OpenOCD has started
1975 * telnet and GDB server
1976 *
1977 * That would allow users to more easily perform any magic they need to before
1978 * reset happens.
1979 */
1980 return jtag_init_inner(cmd_ctx);
1981 }
1982
1983 int jtag_init(struct command_context_s *cmd_ctx)
1984 {
1985 int retval;
1986 if ((retval=jtag_interface_init(cmd_ctx)) != ERROR_OK)
1987 return retval;
1988 if (jtag_init_inner(cmd_ctx)==ERROR_OK)
1989 {
1990 return ERROR_OK;
1991 }
1992 return jtag_init_reset(cmd_ctx);
1993 }
1994
1995 static int default_khz(int khz, int *jtag_speed)
1996 {
1997 LOG_ERROR("Translation from khz to jtag_speed not implemented");
1998 return ERROR_FAIL;
1999 }
2000
2001 static int default_speed_div(int speed, int *khz)
2002 {
2003 LOG_ERROR("Translation from jtag_speed to khz not implemented");
2004 return ERROR_FAIL;
2005 }
2006
2007 static int default_power_dropout(int *dropout)
2008 {
2009 *dropout=0; /* by default we can't detect power dropout */
2010 return ERROR_OK;
2011 }
2012
2013 static int default_srst_asserted(int *srst_asserted)
2014 {
2015 *srst_asserted=0; /* by default we can't detect srst asserted */
2016 return ERROR_OK;
2017 }
2018
2019 static int handle_interface_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2020 {
2021 int i;
2022 int retval;
2023
2024 /* check whether the interface is already configured */
2025 if (jtag_interface)
2026 {
2027 LOG_WARNING("Interface already configured, ignoring");
2028 return ERROR_OK;
2029 }
2030
2031 /* interface name is a mandatory argument */
2032 if (argc < 1 || args[0][0] == '\0')
2033 {
2034 return ERROR_COMMAND_SYNTAX_ERROR;
2035 }
2036
2037 for (i=0; jtag_interfaces[i]; i++)
2038 {
2039 if (strcmp(args[0], jtag_interfaces[i]->name) == 0)
2040 {
2041 if ((retval = jtag_interfaces[i]->register_commands(cmd_ctx)) != ERROR_OK)
2042 {
2043 return retval;
2044 }
2045
2046 jtag_interface = jtag_interfaces[i];
2047
2048 if (jtag_interface->khz == NULL)
2049 {
2050 jtag_interface->khz = default_khz;
2051 }
2052 if (jtag_interface->speed_div == NULL)
2053 {
2054 jtag_interface->speed_div = default_speed_div;
2055 }
2056 if (jtag_interface->power_dropout == NULL)
2057 {
2058 jtag_interface->power_dropout = default_power_dropout;
2059 }
2060 if (jtag_interface->srst_asserted == NULL)
2061 {
2062 jtag_interface->srst_asserted = default_srst_asserted;
2063 }
2064
2065 return ERROR_OK;
2066 }
2067 }
2068
2069 /* no valid interface was found (i.e. the configuration option,
2070 * didn't match one of the compiled-in interfaces
2071 */
2072 LOG_ERROR("No valid jtag interface found (%s)", args[0]);
2073 LOG_ERROR("compiled-in jtag interfaces:");
2074 for (i = 0; jtag_interfaces[i]; i++)
2075 {
2076 LOG_ERROR("%i: %s", i, jtag_interfaces[i]->name);
2077 }
2078
2079 return ERROR_JTAG_INVALID_INTERFACE;
2080 }
2081
2082 static int handle_jtag_device_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2083 {
2084 int e;
2085 char buf[1024];
2086 Jim_Obj *newargs[ 10 ];
2087 /*
2088 * CONVERT SYNTAX
2089 * argv[-1] = command
2090 * argv[ 0] = ir length
2091 * argv[ 1] = ir capture
2092 * argv[ 2] = ir mask
2093 * argv[ 3] = not actually used by anything but in the docs
2094 */
2095
2096 if( argc < 4 ){
2097 command_print( cmd_ctx, "OLD DEPRECATED SYNTAX: Please use the NEW syntax");
2098 return ERROR_OK;
2099 }
2100 command_print( cmd_ctx, "OLD SYNTAX: DEPRECATED - translating to new syntax");
2101 command_print( cmd_ctx, "jtag newtap CHIP TAP -irlen %s -ircapture %s -irvalue %s",
2102 args[0],
2103 args[1],
2104 args[2] );
2105 command_print( cmd_ctx, "Example: STM32 has 2 taps, the cortexM3(len4) + boundaryscan(len5)");
2106 command_print( cmd_ctx, "jtag newtap stm32 cortexm3 ....., thus creating the tap: \"stm32.cortexm3\"");
2107 command_print( cmd_ctx, "jtag newtap stm32 boundary ....., and the tap: \"stm32.boundary\"");
2108 command_print( cmd_ctx, "And then refer to the taps by the dotted name.");
2109
2110 newargs[0] = Jim_NewStringObj( interp, "jtag", -1 );
2111 newargs[1] = Jim_NewStringObj( interp, "newtap", -1 );
2112 sprintf( buf, "chip%d", jtag_NumTotalTaps() );
2113 newargs[2] = Jim_NewStringObj( interp, buf, -1 );
2114 sprintf( buf, "tap%d", jtag_NumTotalTaps() );
2115 newargs[3] = Jim_NewStringObj( interp, buf, -1 );
2116 newargs[4] = Jim_NewStringObj( interp, "-irlen", -1 );
2117 newargs[5] = Jim_NewStringObj( interp, args[0], -1 );
2118 newargs[6] = Jim_NewStringObj( interp, "-ircapture", -1 );
2119 newargs[7] = Jim_NewStringObj( interp, args[1], -1 );
2120 newargs[8] = Jim_NewStringObj( interp, "-irmask", -1 );
2121 newargs[9] = Jim_NewStringObj( interp, args[2], -1 );
2122
2123 command_print( cmd_ctx, "NEW COMMAND:");
2124 sprintf( buf, "%s %s %s %s %s %s %s %s %s %s",
2125 Jim_GetString( newargs[0], NULL ),
2126 Jim_GetString( newargs[1], NULL ),
2127 Jim_GetString( newargs[2], NULL ),
2128 Jim_GetString( newargs[3], NULL ),
2129 Jim_GetString( newargs[4], NULL ),
2130 Jim_GetString( newargs[5], NULL ),
2131 Jim_GetString( newargs[6], NULL ),
2132 Jim_GetString( newargs[7], NULL ),
2133 Jim_GetString( newargs[8], NULL ),
2134 Jim_GetString( newargs[9], NULL ) );
2135
2136 e = jim_jtag_command( interp, 10, newargs );
2137 if( e != JIM_OK ){
2138 command_print( cmd_ctx, "%s", Jim_GetString( Jim_GetResult(interp), NULL ) );
2139 }
2140 return e;
2141 }
2142
2143 static int handle_scan_chain_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2144 {
2145 jtag_tap_t *tap;
2146
2147 tap = jtag_all_taps;
2148 command_print(cmd_ctx, " TapName | Enabled | IdCode Expected IrLen IrCap IrMask Instr ");
2149 command_print(cmd_ctx, "---|--------------------|---------|------------|------------|------|------|------|---------");
2150
2151 while( tap ){
2152 u32 expected, expected_mask, cur_instr, ii;
2153 expected = buf_get_u32(tap->expected, 0, tap->ir_length);
2154 expected_mask = buf_get_u32(tap->expected_mask, 0, tap->ir_length);
2155 cur_instr = buf_get_u32(tap->cur_instr, 0, tap->ir_length);
2156
2157 command_print(cmd_ctx,
2158 "%2d | %-18s | %c | 0x%08x | 0x%08x | 0x%02x | 0x%02x | 0x%02x | 0x%02x",
2159 tap->abs_chain_position,
2160 tap->dotted_name,
2161 tap->enabled ? 'Y' : 'n',
2162 tap->idcode,
2163 (tap->expected_ids_cnt > 0 ? tap->expected_ids[0] : 0),
2164 tap->ir_length,
2165 expected,
2166 expected_mask,
2167 cur_instr);
2168
2169 for (ii = 1; ii < tap->expected_ids_cnt; ii++) {
2170 command_print(cmd_ctx, " | | | | 0x%08x | | | | ",
2171 tap->expected_ids[ii]);
2172 }
2173
2174 tap = tap->next_tap;
2175 }
2176
2177 return ERROR_OK;
2178 }
2179
2180 static int handle_reset_config_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2181 {
2182 int new_cfg = 0;
2183 int mask = 0;
2184
2185 if (argc < 1)
2186 return ERROR_COMMAND_SYNTAX_ERROR;
2187
2188 /* Original versions cared about the order of these tokens:
2189 * reset_config signals [combination [trst_type [srst_type]]]
2190 * They also clobbered the previous configuration even on error.
2191 *
2192 * Here we don't care about the order, and only change values
2193 * which have been explicitly specified.
2194 */
2195 for (; argc; argc--, args++) {
2196 int tmp = 0;
2197 int m;
2198
2199 /* signals */
2200 m = RESET_HAS_TRST | RESET_HAS_SRST;
2201 if (strcmp(*args, "none") == 0)
2202 tmp = RESET_NONE;
2203 else if (strcmp(*args, "trst_only") == 0)
2204 tmp = RESET_HAS_TRST;
2205 else if (strcmp(*args, "srst_only") == 0)
2206 tmp = RESET_HAS_SRST;
2207 else if (strcmp(*args, "trst_and_srst") == 0)
2208 tmp = RESET_HAS_TRST | RESET_HAS_SRST;
2209 else
2210 m = 0;
2211 if (mask & m) {
2212 LOG_ERROR("extra reset_config %s spec (%s)",
2213 "signal", *args);
2214 return ERROR_INVALID_ARGUMENTS;
2215 }
2216 if (m)
2217 goto next;
2218
2219 /* combination (options for broken wiring) */
2220 m = RESET_SRST_PULLS_TRST | RESET_TRST_PULLS_SRST;
2221 if (strcmp(*args, "separate") == 0)
2222 /* separate reset lines - default */;
2223 else if (strcmp(*args, "srst_pulls_trst") == 0)
2224 tmp |= RESET_SRST_PULLS_TRST;
2225 else if (strcmp(*args, "trst_pulls_srst") == 0)
2226 tmp |= RESET_TRST_PULLS_SRST;
2227 else if (strcmp(*args, "combined") == 0)
2228 tmp |= RESET_SRST_PULLS_TRST | RESET_TRST_PULLS_SRST;
2229 else
2230 m = 0;
2231 if (mask & m) {
2232 LOG_ERROR("extra reset_config %s spec (%s)",
2233 "combination", *args);
2234 return ERROR_INVALID_ARGUMENTS;
2235 }
2236 if (m)
2237 goto next;
2238
2239 /* trst_type (NOP without HAS_TRST) */
2240 m = RESET_TRST_OPEN_DRAIN;
2241 if (strcmp(*args, "trst_open_drain") == 0)
2242 tmp |= RESET_TRST_OPEN_DRAIN;
2243 else if (strcmp(*args, "trst_push_pull") == 0)
2244 /* push/pull from adapter - default */;
2245 else
2246 m = 0;
2247 if (mask & m) {
2248 LOG_ERROR("extra reset_config %s spec (%s)",
2249 "trst_type", *args);
2250 return ERROR_INVALID_ARGUMENTS;
2251 }
2252 if (m)
2253 goto next;
2254
2255 /* srst_type (NOP without HAS_SRST) */
2256 m |= RESET_SRST_PUSH_PULL;
2257 if (strcmp(*args, "srst_push_pull") == 0)
2258 tmp |= RESET_SRST_PUSH_PULL;
2259 else if (strcmp(*args, "srst_open_drain") == 0)
2260 /* open drain from adapter - default */;
2261 else
2262 m = 0;
2263 if (mask & m) {
2264 LOG_ERROR("extra reset_config %s spec (%s)",
2265 "srst_type", *args);
2266 return ERROR_INVALID_ARGUMENTS;
2267 }
2268 if (m)
2269 goto next;
2270
2271 /* caller provided nonsense; fail */
2272 LOG_ERROR("unknown reset_config flag (%s)", *args);
2273 return ERROR_INVALID_ARGUMENTS;
2274
2275 next:
2276 /* Remember the bits which were specified (mask)
2277 * and their new values (new_cfg).
2278 */
2279 mask |= m;
2280 new_cfg |= tmp;
2281 }
2282
2283 /* clear previous values of those bits, save new values */
2284 jtag_reset_config &= ~mask;
2285 jtag_reset_config |= new_cfg;
2286
2287 return ERROR_OK;
2288 }
2289
2290 static int handle_jtag_nsrst_delay_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2291 {
2292 if (argc < 1)
2293 {
2294 LOG_ERROR("jtag_nsrst_delay <ms> command takes one required argument");
2295 exit(-1);
2296 }
2297 else
2298 {
2299 jtag_nsrst_delay = strtoul(args[0], NULL, 0);
2300 }
2301
2302 return ERROR_OK;
2303 }
2304
2305 static int handle_jtag_ntrst_delay_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2306 {
2307 if (argc < 1)
2308 {
2309 LOG_ERROR("jtag_ntrst_delay <ms> command takes one required argument");
2310 exit(-1);
2311 }
2312 else
2313 {
2314 jtag_ntrst_delay = strtoul(args[0], NULL, 0);
2315 }
2316
2317 return ERROR_OK;
2318 }
2319
2320 static int handle_jtag_speed_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2321 {
2322 int retval=ERROR_OK;
2323
2324 if (argc == 1)
2325 {
2326 LOG_DEBUG("handle jtag speed");
2327
2328 int cur_speed = 0;
2329 cur_speed = jtag_speed = strtoul(args[0], NULL, 0);
2330
2331 /* this command can be called during CONFIG,
2332 * in which case jtag isn't initialized */
2333 if (jtag)
2334 {
2335 retval=jtag->speed(cur_speed);
2336 }
2337 } else if (argc == 0)
2338 {
2339 } else
2340 {
2341 return ERROR_COMMAND_SYNTAX_ERROR;
2342 }
2343 command_print(cmd_ctx, "jtag_speed: %d", jtag_speed);
2344
2345 return retval;
2346 }
2347
2348 static int handle_jtag_khz_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2349 {
2350 int retval=ERROR_OK;
2351 LOG_DEBUG("handle jtag khz");
2352
2353 if(argc == 1)
2354 {
2355 speed_khz = strtoul(args[0], NULL, 0);
2356 if (jtag != NULL)
2357 {
2358 int cur_speed = 0;
2359 LOG_DEBUG("have interface set up");
2360 int speed_div1;
2361 if ((retval=jtag->khz(speed_khz, &speed_div1))!=ERROR_OK)
2362 {
2363 speed_khz = 0;
2364 return retval;
2365 }
2366
2367 cur_speed = jtag_speed = speed_div1;
2368
2369 retval=jtag->speed(cur_speed);
2370 } else
2371 {
2372 hasKHz = 1;
2373 }
2374 } else if (argc==0)
2375 {
2376 } else
2377 {
2378 return ERROR_COMMAND_SYNTAX_ERROR;
2379 }
2380
2381 if (jtag!=NULL)
2382 {
2383 if ((retval=jtag->speed_div(jtag_speed, &speed_khz))!=ERROR_OK)
2384 return retval;
2385 }
2386
2387 if (speed_khz==0)
2388 {
2389 command_print(cmd_ctx, "RCLK - adaptive");
2390 } else
2391 {
2392 command_print(cmd_ctx, "%d kHz", speed_khz);
2393 }
2394 return retval;
2395
2396 }
2397
2398 static int handle_endstate_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2399 {
2400 tap_state_t state;
2401
2402 if (argc < 1)
2403 {
2404 return ERROR_COMMAND_SYNTAX_ERROR;
2405 }
2406 else
2407 {
2408 state = tap_state_by_name( args[0] );
2409 if( state < 0 ){
2410 command_print( cmd_ctx, "Invalid state name: %s\n", args[0] );
2411 return ERROR_COMMAND_SYNTAX_ERROR;
2412 }
2413 jtag_add_end_state(state);
2414 jtag_execute_queue();
2415 }
2416 command_print(cmd_ctx, "current endstate: %s", tap_state_name(cmd_queue_end_state));
2417
2418 return ERROR_OK;
2419 }
2420
2421 static int handle_jtag_reset_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2422 {
2423 int trst = -1;
2424 int srst = -1;
2425
2426 if (argc < 2)
2427 {
2428 return ERROR_COMMAND_SYNTAX_ERROR;
2429 }
2430
2431 if (args[0][0] == '1')
2432 trst = 1;
2433 else if (args[0][0] == '0')
2434 trst = 0;
2435 else
2436 {
2437 return ERROR_COMMAND_SYNTAX_ERROR;
2438 }
2439
2440 if (args[1][0] == '1')
2441 srst = 1;
2442 else if (args[1][0] == '0')
2443 srst = 0;
2444 else
2445 {
2446 return ERROR_COMMAND_SYNTAX_ERROR;
2447 }
2448
2449 if (jtag_interface_init(cmd_ctx) != ERROR_OK)
2450 return ERROR_JTAG_INIT_FAILED;
2451
2452 jtag_add_reset(trst, srst);
2453 jtag_execute_queue();
2454
2455 return ERROR_OK;
2456 }
2457
2458 static int handle_runtest_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2459 {
2460 if (argc < 1)
2461 {
2462 return ERROR_COMMAND_SYNTAX_ERROR;
2463 }
2464
2465 jtag_add_runtest(strtol(args[0], NULL, 0), TAP_INVALID);
2466 jtag_execute_queue();
2467
2468 return ERROR_OK;
2469
2470 }
2471
2472 /*
2473 * For "irscan" or "drscan" commands, the "end" (really, "next") state
2474 * should be stable ... and *NOT* a shift state, otherwise free-running
2475 * jtag clocks could change the values latched by the update state.
2476 */
2477 static bool scan_is_safe(tap_state_t state)
2478 {
2479 switch (state)
2480 {
2481 case TAP_RESET:
2482 case TAP_IDLE:
2483 case TAP_DRPAUSE:
2484 case TAP_IRPAUSE:
2485 return true;
2486 default:
2487 return false;
2488 }
2489 }
2490
2491
2492 static int handle_irscan_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2493 {
2494 int i;
2495 scan_field_t *fields;
2496 jtag_tap_t *tap;
2497 tap_state_t endstate;
2498
2499 if ((argc < 2) || (argc % 2))
2500 {
2501 return ERROR_COMMAND_SYNTAX_ERROR;
2502 }
2503
2504 /* optional "-endstate" "statename" at the end of the arguments,
2505 * so that e.g. IRPAUSE can let us load the data register before
2506 * entering RUN/IDLE to execute the instruction we load here.
2507 */
2508 endstate = TAP_IDLE;
2509
2510 if( argc >= 4 ){
2511 /* have at least one pair of numbers. */
2512 /* is last pair the magic text? */
2513 if( 0 == strcmp( "-endstate", args[ argc - 2 ] ) ){
2514 const char *cpA;
2515 const char *cpS;
2516 cpA = args[ argc-1 ];
2517 for( endstate = 0 ; endstate < TAP_NUM_STATES ; endstate++ ){
2518 cpS = tap_state_name( endstate );
2519 if( 0 == strcmp( cpA, cpS ) ){
2520 break;
2521 }
2522 }
2523 if( endstate >= TAP_NUM_STATES ){
2524 return ERROR_COMMAND_SYNTAX_ERROR;
2525 } else {
2526 if (!scan_is_safe(endstate))
2527 LOG_WARNING("irscan with unsafe "
2528 "endstate \"%s\"", cpA);
2529 /* found - remove the last 2 args */
2530 argc -= 2;
2531 }
2532 }
2533 }
2534
2535 int num_fields = argc / 2;
2536
2537 fields = malloc(sizeof(scan_field_t) * num_fields);
2538
2539 for (i = 0; i < num_fields; i++)
2540 {
2541 tap = jtag_TapByString( args[i*2] );
2542 if (tap==NULL)
2543 {
2544 command_print( cmd_ctx, "Tap: %s unknown", args[i*2] );
2545 return ERROR_FAIL;
2546 }
2547 int field_size = tap->ir_length;
2548 fields[i].tap = tap;
2549 fields[i].num_bits = field_size;
2550 fields[i].out_value = malloc(CEIL(field_size, 8));
2551 buf_set_u32(fields[i].out_value, 0, field_size, strtoul(args[i*2+1], NULL, 0));
2552 fields[i].in_value = NULL;
2553 }
2554
2555 /* did we have an endstate? */
2556 jtag_add_ir_scan(num_fields, fields, endstate);
2557
2558 int retval=jtag_execute_queue();
2559
2560 for (i = 0; i < num_fields; i++)
2561 free(fields[i].out_value);
2562
2563 free (fields);
2564
2565 return retval;
2566 }
2567
2568 static int Jim_Command_drscan(Jim_Interp *interp, int argc, Jim_Obj *const *args)
2569 {
2570 int retval;
2571 scan_field_t *fields;
2572 int num_fields;
2573 int field_count = 0;
2574 int i, e;
2575 jtag_tap_t *tap;
2576 tap_state_t endstate;
2577
2578 /* args[1] = device
2579 * args[2] = num_bits
2580 * args[3] = hex string
2581 * ... repeat num bits and hex string ...
2582 *
2583 * .. optionally:
2584 * args[N-2] = "-endstate"
2585 * args[N-1] = statename
2586 */
2587 if ((argc < 4) || ((argc % 2)!=0))
2588 {
2589 Jim_WrongNumArgs(interp, 1, args, "wrong arguments");
2590 return JIM_ERR;
2591 }
2592
2593 endstate = TAP_IDLE;
2594
2595 /* validate arguments as numbers */
2596 e = JIM_OK;
2597 for (i = 2; i < argc; i+=2)
2598 {
2599 long bits;
2600 const char *cp;
2601
2602 e = Jim_GetLong(interp, args[i], &bits);
2603 /* If valid - try next arg */
2604 if( e == JIM_OK ){
2605 continue;
2606 }
2607
2608 /* Not valid.. are we at the end? */
2609 if ( ((i+2) != argc) ){
2610 /* nope, then error */
2611 return e;
2612 }
2613
2614 /* it could be: "-endstate FOO"
2615 * e.g. DRPAUSE so we can issue more instructions
2616 * before entering RUN/IDLE and executing them.
2617 */
2618
2619 /* get arg as a string. */
2620 cp = Jim_GetString( args[i], NULL );
2621 /* is it the magic? */
2622 if( 0 == strcmp( "-endstate", cp ) ){
2623 /* is the statename valid? */
2624 cp = Jim_GetString( args[i+1], NULL );
2625
2626 /* see if it is a valid state name */
2627 endstate = tap_state_by_name(cp);
2628 if( endstate < 0 ){
2629 /* update the error message */
2630 Jim_SetResult_sprintf(interp,"endstate: %s invalid", cp );
2631 } else {
2632 if (!scan_is_safe(endstate))
2633 LOG_WARNING("drscan with unsafe "
2634 "endstate \"%s\"", cp);
2635
2636 /* valid - so clear the error */
2637 e = JIM_OK;
2638 /* and remove the last 2 args */
2639 argc -= 2;
2640 }
2641 }
2642
2643 /* Still an error? */
2644 if( e != JIM_OK ){
2645 return e; /* too bad */
2646 }
2647 } /* validate args */
2648
2649 tap = jtag_TapByJimObj( interp, args[1] );
2650 if( tap == NULL ){
2651 return JIM_ERR;
2652 }
2653
2654 num_fields=(argc-2)/2;
2655 fields = malloc(sizeof(scan_field_t) * num_fields);
2656 for (i = 2; i < argc; i+=2)
2657 {
2658 long bits;
2659 int len;
2660 const char *str;
2661
2662 Jim_GetLong(interp, args[i], &bits);
2663 str = Jim_GetString(args[i+1], &len);
2664
2665 fields[field_count].tap = tap;
2666 fields[field_count].num_bits = bits;
2667 fields[field_count].out_value = malloc(CEIL(bits, 8));
2668 str_to_buf(str, len, fields[field_count].out_value, bits, 0);
2669 fields[field_count].in_value = fields[field_count].out_value;
2670 field_count++;
2671 }
2672
2673 jtag_add_dr_scan(num_fields, fields, endstate);
2674
2675 retval = jtag_execute_queue();
2676 if (retval != ERROR_OK)
2677 {
2678 Jim_SetResultString(interp, "drscan: jtag execute failed",-1);
2679 return JIM_ERR;
2680 }
2681
2682 field_count=0;
2683 Jim_Obj *list = Jim_NewListObj(interp, NULL, 0);
2684 for (i = 2; i < argc; i+=2)
2685 {
2686 long bits;
2687 char *str;
2688
2689 Jim_GetLong(interp, args[i], &bits);
2690 str = buf_to_str(fields[field_count].in_value, bits, 16);
2691 free(fields[field_count].out_value);
2692
2693 Jim_ListAppendElement(interp, list, Jim_NewStringObj(interp, str, strlen(str)));
2694 free(str);
2695 field_count++;
2696 }
2697
2698 Jim_SetResult(interp, list);
2699
2700 free(fields);
2701
2702 return JIM_OK;
2703 }
2704
2705
2706 static int Jim_Command_flush_count(Jim_Interp *interp, int argc, Jim_Obj *const *args)
2707 {
2708 Jim_SetResult(interp, Jim_NewIntObj(interp, jtag_flush_queue_count));
2709
2710 return JIM_OK;
2711 }
2712
2713
2714 static int handle_verify_ircapture_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2715 {
2716 if (argc == 1)
2717 {
2718 if (strcmp(args[0], "enable") == 0)
2719 {
2720 jtag_verify_capture_ir = 1;
2721 }
2722 else if (strcmp(args[0], "disable") == 0)
2723 {
2724 jtag_verify_capture_ir = 0;
2725 } else
2726 {
2727 return ERROR_COMMAND_SYNTAX_ERROR;
2728 }
2729 } else if (argc != 0)
2730 {
2731 return ERROR_COMMAND_SYNTAX_ERROR;
2732 }
2733
2734 command_print(cmd_ctx, "verify Capture-IR is %s", (jtag_verify_capture_ir) ? "enabled": "disabled");
2735
2736 return ERROR_OK;
2737 }
2738
2739 static int handle_verify_jtag_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2740 {
2741 if (argc == 1)
2742 {
2743 if (strcmp(args[0], "enable") == 0)
2744 {
2745 jtag_verify = 1;
2746 }
2747 else if (strcmp(args[0], "disable") == 0)
2748 {
2749 jtag_verify = 0;
2750 } else
2751 {
2752 return ERROR_COMMAND_SYNTAX_ERROR;
2753 }
2754 } else if (argc != 0)
2755 {
2756 return ERROR_COMMAND_SYNTAX_ERROR;
2757 }
2758
2759 command_print(cmd_ctx, "verify jtag capture is %s", (jtag_verify) ? "enabled": "disabled");
2760
2761 return ERROR_OK;
2762 }
2763
2764
2765 int jtag_power_dropout(int *dropout)
2766 {
2767 return jtag->power_dropout(dropout);
2768 }
2769
2770 int jtag_srst_asserted(int *srst_asserted)
2771 {
2772 return jtag->srst_asserted(srst_asserted);
2773 }
2774
2775 void jtag_tap_handle_event( jtag_tap_t * tap, enum jtag_tap_event e)
2776 {
2777 jtag_tap_event_action_t * jteap;
2778 int done;
2779
2780 jteap = tap->event_action;
2781
2782 done = 0;
2783 while (jteap) {
2784 if (jteap->event == e) {
2785 done = 1;
2786 LOG_DEBUG( "JTAG tap: %s event: %d (%s) action: %s\n",
2787 tap->dotted_name,
2788 e,
2789 Jim_Nvp_value2name_simple(nvp_jtag_tap_event, e)->name,
2790 Jim_GetString(jteap->body, NULL) );
2791 if (Jim_EvalObj(interp, jteap->body) != JIM_OK) {
2792 Jim_PrintErrorMessage(interp);
2793 }
2794 }
2795
2796 jteap = jteap->next;
2797 }
2798
2799 if (!done) {
2800 LOG_DEBUG( "event %d %s - no action",
2801 e,
2802 Jim_Nvp_value2name_simple( nvp_jtag_tap_event, e)->name);
2803 }
2804 }
2805
2806 /*-----<Cable Helper API>---------------------------------------*/
2807
2808 /* these Cable Helper API functions are all documented in the jtag.h header file,
2809 using a Doxygen format. And since Doxygen's configuration file "Doxyfile",
2810 is setup to prefer its docs in the header file, no documentation is here, for
2811 if it were, it would have to be doubly maintained.
2812 */
2813
2814 /**
2815 * @see tap_set_state() and tap_get_state() accessors.
2816 * Actual name is not important since accessors hide it.
2817 */
2818 static tap_state_t state_follower = TAP_RESET;
2819
2820 void tap_set_state_impl( tap_state_t new_state )
2821 {
2822 /* this is the state we think the TAPs are in now, was cur_state */
2823 state_follower = new_state;
2824 }
2825
2826 tap_state_t tap_get_state()
2827 {
2828 return state_follower;
2829 }
2830
2831 /**
2832 * @see tap_set_end_state() and tap_get_end_state() accessors.
2833 * Actual name is not important because accessors hide it.
2834 */
2835 static tap_state_t end_state_follower = TAP_RESET;
2836
2837 void tap_set_end_state( tap_state_t new_end_state )
2838 {
2839 /* this is the state we think the TAPs will be in at completion of the
2840 current TAP operation, was end_state
2841 */
2842 end_state_follower = new_end_state;
2843 }
2844
2845 tap_state_t tap_get_end_state()
2846 {
2847 return end_state_follower;
2848 }
2849
2850
2851 int tap_move_ndx( tap_state_t astate )
2852 {
2853 /* given a stable state, return the index into the tms_seqs[] array within tap_get_tms_path() */
2854
2855 int ndx;
2856
2857 switch( astate )
2858 {
2859 case TAP_RESET: ndx = 0; break;
2860 case TAP_DRSHIFT: ndx = 2; break;
2861 case TAP_DRPAUSE: ndx = 3; break;
2862 case TAP_IDLE: ndx = 1; break;
2863 case TAP_IRSHIFT: ndx = 4; break;
2864 case TAP_IRPAUSE: ndx = 5; break;
2865 default:
2866 LOG_ERROR( "fatal: unstable state \"%s\" used in tap_move_ndx()", tap_state_name(astate) );
2867 exit(1);
2868 }
2869
2870 return ndx;
2871 }
2872
2873
2874 /* tap_move[i][j]: tap movement command to go from state i to state j
2875 * 0: Test-Logic-Reset
2876 * 1: Run-Test/Idle
2877 * 2: Shift-DR
2878 * 3: Pause-DR
2879 * 4: Shift-IR
2880 * 5: Pause-IR
2881 *
2882 * DRSHIFT->DRSHIFT and IRSHIFT->IRSHIFT have to be caught in interface specific code
2883 */
2884 struct tms_sequences
2885 {
2886 u8 bits;
2887 u8 bit_count;
2888
2889 };
2890
2891 /*
2892 * These macros allow us to specify TMS state transitions by bits rather than hex bytes.
2893 * Read the bits from LSBit first to MSBit last (right-to-left).
2894 */
2895 #define HEX__(n) 0x##n##LU
2896
2897 #define B8__(x) \
2898 (((x) & 0x0000000FLU)?(1<<0):0) \
2899 +(((x) & 0x000000F0LU)?(1<<1):0) \
2900 +(((x) & 0x00000F00LU)?(1<<2):0) \
2901 +(((x) & 0x0000F000LU)?(1<<3):0) \
2902 +(((x) & 0x000F0000LU)?(1<<4):0) \
2903 +(((x) & 0x00F00000LU)?(1<<5):0) \
2904 +(((x) & 0x0F000000LU)?(1<<6):0) \
2905 +(((x) & 0xF0000000LU)?(1<<7):0)
2906
2907 #define B8(bits,count) { ((u8)B8__(HEX__(bits))), (count) }
2908
2909 static const struct tms_sequences old_tms_seqs[6][6] = /* [from_state_ndx][to_state_ndx] */
2910 {
2911 /* value clocked to TMS to move from one of six stable states to another.
2912 * N.B. OOCD clocks TMS from LSB first, so read these right-to-left.
2913 * N.B. These values are tightly bound to the table in tap_get_tms_path_len().
2914 * N.B. Reset only needs to be 0b11111, but in JLink an even byte of 1's is more stable.
2915 * These extra ones cause no TAP state problem, because we go into reset and stay in reset.
2916 */
2917
2918
2919
2920 /* to state: */
2921 /* RESET IDLE DRSHIFT DRPAUSE IRSHIFT IRPAUSE */ /* from state: */
2922 { B8(1111111,7), B8(0000000,7), B8(0010111,7), B8(0001010,7), B8(0011011,7), B8(0010110,7) }, /* RESET */
2923 { B8(1111111,7), B8(0000000,7), B8(0100101,7), B8(0000101,7), B8(0101011,7), B8(0001011,7) }, /* IDLE */
2924 { B8(1111111,7), B8(0110001,7), B8(0000000,7), B8(0000001,7), B8(0001111,7), B8(0101111,7) }, /* DRSHIFT */
2925 { B8(1111111,7), B8(0110000,7), B8(0100000,7), B8(0010111,7), B8(0011110,7), B8(0101111,7) }, /* DRPAUSE */
2926 { B8(1111111,7), B8(0110001,7), B8(0000111,7), B8(0010111,7), B8(0000000,7), B8(0000001,7) }, /* IRSHIFT */
2927 { B8(1111111,7), B8(0110000,7), B8(0011100,7), B8(0010111,7), B8(0011110,7), B8(0101111,7) }, /* IRPAUSE */
2928 };
2929
2930
2931
2932 static const struct tms_sequences short_tms_seqs[6][6] = /* [from_state_ndx][to_state_ndx] */
2933 {
2934 /* this is the table submitted by Jeff Williams on 3/30/2009 with this comment:
2935
2936 OK, I added Peter's version of the state table, and it works OK for
2937 me on MC1322x. I've recreated the jlink portion of patch with this
2938 new state table. His changes to my state table are pretty minor in
2939 terms of total transitions, but Peter feels that his version fixes
2940 some long-standing problems.
2941 Jeff
2942
2943 I added the bit count into the table, reduced RESET column to 7 bits from 8.
2944 Dick
2945
2946 state specific comments:
2947 ------------------------
2948 *->RESET tried the 5 bit reset and it gave me problems, 7 bits seems to
2949 work better on ARM9 with ft2232 driver. (Dick)
2950
2951 RESET->DRSHIFT add 1 extra clock cycles in the RESET state before advancing.
2952 needed on ARM9 with ft2232 driver. (Dick)
2953
2954 RESET->IRSHIFT add 1 extra clock cycles in the RESET state before advancing.
2955 needed on ARM9 with ft2232 driver. (Dick)
2956 */
2957
2958 /* to state: */
2959 /* RESET IDLE DRSHIFT DRPAUSE IRSHIFT IRPAUSE */ /* from state: */
2960 { B8(1111111,7), B8(0000000,7), B8(0010111,7), B8(0001010,7), B8(0011011,7), B8(0010110,7) }, /* RESET */
2961 { B8(1111111,7), B8(0000000,7), B8(001,3), B8(0101,4), B8(0011,4), B8(01011,5) }, /* IDLE */
2962 { B8(1111111,7), B8(011,3), B8(00111,5), B8(01,2), B8(001111,6), B8(0101111,7) }, /* DRSHIFT */
2963 { B8(1111111,7), B8(011,3), B8(01,2), B8(0,1), B8(001111,6), B8(0101111,7) }, /* DRPAUSE */
2964 { B8(1111111,7), B8(011,3), B8(00111,5), B8(010111,6), B8(001111,6), B8(01,2) }, /* IRSHIFT */
2965 { B8(1111111,7), B8(011,3), B8(00111,5), B8(010111,6), B8(01,2), B8(0,1) } /* IRPAUSE */
2966
2967 };
2968
2969 typedef const struct tms_sequences tms_table[6][6];
2970
2971 static tms_table *tms_seqs=&short_tms_seqs;
2972
2973 int tap_get_tms_path( tap_state_t from, tap_state_t to )
2974 {
2975 return (*tms_seqs)[tap_move_ndx(from)][tap_move_ndx(to)].bits;
2976 }
2977
2978
2979 int tap_get_tms_path_len( tap_state_t from, tap_state_t to )
2980 {
2981 return (*tms_seqs)[tap_move_ndx(from)][tap_move_ndx(to)].bit_count;
2982 }
2983
2984
2985 bool tap_is_state_stable(tap_state_t astate)
2986 {
2987 bool is_stable;
2988
2989 /* A switch() is used because it is symbol dependent
2990 (not value dependent like an array), and can also check bounds.
2991 */
2992 switch( astate )
2993 {
2994 case TAP_RESET:
2995 case TAP_IDLE:
2996 case TAP_DRSHIFT:
2997 case TAP_DRPAUSE:
2998 case TAP_IRSHIFT:
2999 case TAP_IRPAUSE:
3000 is_stable = true;
3001 break;
3002 default:
3003 is_stable = false;
3004 }
3005
3006 return is_stable;
3007 }
3008
3009 tap_state_t tap_state_transition(tap_state_t cur_state, bool tms)
3010 {
3011 tap_state_t new_state;
3012
3013 /* A switch is used because it is symbol dependent and not value dependent
3014 like an array. Also it can check for out of range conditions.
3015 */
3016
3017 if (tms)
3018 {
3019 switch (cur_state)
3020 {
3021 case TAP_RESET:
3022 new_state = cur_state;
3023 break;
3024 case TAP_IDLE:
3025 case TAP_DRUPDATE:
3026 case TAP_IRUPDATE:
3027 new_state = TAP_DRSELECT;
3028 break;
3029 case TAP_DRSELECT:
3030 new_state = TAP_IRSELECT;
3031 break;
3032 case TAP_DRCAPTURE:
3033 case TAP_DRSHIFT:
3034 new_state = TAP_DREXIT1;
3035 break;
3036 case TAP_DREXIT1:
3037 case TAP_DREXIT2:
3038 new_state = TAP_DRUPDATE;
3039 break;
3040 case TAP_DRPAUSE:
3041 new_state = TAP_DREXIT2;
3042 break;
3043 case TAP_IRSELECT:
3044 new_state = TAP_RESET;
3045 break;
3046 case TAP_IRCAPTURE:
3047 case TAP_IRSHIFT:
3048 new_state = TAP_IREXIT1;
3049 break;
3050 case TAP_IREXIT1:
3051 case TAP_IREXIT2:
3052 new_state = TAP_IRUPDATE;
3053 break;
3054 case TAP_IRPAUSE:
3055 new_state = TAP_IREXIT2;
3056 break;
3057 default:
3058 LOG_ERROR( "fatal: invalid argument cur_state=%d", cur_state );
3059 exit(1);
3060 break;
3061 }
3062 }
3063 else
3064 {
3065 switch (cur_state)
3066 {
3067 case TAP_RESET:
3068 case TAP_IDLE:
3069 case TAP_DRUPDATE:
3070 case TAP_IRUPDATE:
3071 new_state = TAP_IDLE;
3072 break;
3073 case TAP_DRSELECT:
3074 new_state = TAP_DRCAPTURE;
3075 break;
3076 case TAP_DRCAPTURE:
3077 case TAP_DRSHIFT:
3078 case TAP_DREXIT2:
3079 new_state = TAP_DRSHIFT;
3080 break;
3081 case TAP_DREXIT1:
3082 case TAP_DRPAUSE:
3083 new_state = TAP_DRPAUSE;
3084 break;
3085 case TAP_IRSELECT:
3086 new_state = TAP_IRCAPTURE;
3087 break;
3088 case TAP_IRCAPTURE:
3089 case TAP_IRSHIFT:
3090 case TAP_IREXIT2:
3091 new_state = TAP_IRSHIFT;
3092 break;
3093 case TAP_IREXIT1:
3094 case TAP_IRPAUSE:
3095 new_state = TAP_IRPAUSE;
3096 break;
3097 default:
3098 LOG_ERROR( "fatal: invalid argument cur_state=%d", cur_state );
3099 exit(1);
3100 break;
3101 }
3102 }
3103
3104 return new_state;
3105 }
3106
3107 const char* tap_state_name(tap_state_t state)
3108 {
3109 const char* ret;
3110
3111 switch( state )
3112 {
3113 case TAP_RESET: ret = "RESET"; break;
3114 case TAP_IDLE: ret = "RUN/IDLE"; break;
3115 case TAP_DRSELECT: ret = "DRSELECT"; break;
3116 case TAP_DRCAPTURE: ret = "DRCAPTURE"; break;
3117 case TAP_DRSHIFT: ret = "DRSHIFT"; break;
3118 case TAP_DREXIT1: ret = "DREXIT1"; break;
3119 case TAP_DRPAUSE: ret = "DRPAUSE"; break;
3120 case TAP_DREXIT2: ret = "DREXIT2"; break;
3121 case TAP_DRUPDATE: ret = "DRUPDATE"; break;
3122 case TAP_IRSELECT: ret = "IRSELECT"; break;
3123 case TAP_IRCAPTURE: ret = "IRCAPTURE"; break;
3124 case TAP_IRSHIFT: ret = "IRSHIFT"; break;
3125 case TAP_IREXIT1: ret = "IREXIT1"; break;
3126 case TAP_IRPAUSE: ret = "IRPAUSE"; break;
3127 case TAP_IREXIT2: ret = "IREXIT2"; break;
3128 case TAP_IRUPDATE: ret = "IRUPDATE"; break;
3129 default: ret = "???";
3130 }
3131
3132 return ret;
3133 }
3134
3135 static tap_state_t tap_state_by_name( const char *name )
3136 {
3137 tap_state_t x;
3138
3139 for( x = 0 ; x < TAP_NUM_STATES ; x++ ){
3140 /* be nice to the human */
3141 if( 0 == strcasecmp( name, tap_state_name(x) ) ){
3142 return x;
3143 }
3144 }
3145 /* not found */
3146 return TAP_INVALID;
3147 }
3148
3149 #ifdef _DEBUG_JTAG_IO_
3150
3151 #define JTAG_DEBUG_STATE_APPEND(buf, len, bit) \
3152 do { buf[len] = bit ? '1' : '0'; } while(0)
3153 #define JTAG_DEBUG_STATE_PRINT(a, b, astr, bstr) \
3154 DEBUG_JTAG_IO("TAP/SM: %9s -> %5s\tTMS: %s\tTDI: %s", \
3155 tap_state_name(a), tap_state_name(b), astr, bstr)
3156
3157 tap_state_t jtag_debug_state_machine(const void *tms_buf, const void *tdi_buf,
3158 unsigned tap_bits, tap_state_t next_state)
3159 {
3160 const u8 *tms_buffer;
3161 const u8 *tdi_buffer;
3162 unsigned tap_bytes;
3163 unsigned cur_byte;
3164 unsigned cur_bit;
3165
3166 unsigned tap_out_bits;
3167 char tms_str[33];
3168 char tdi_str[33];
3169
3170 tap_state_t last_state;
3171
3172 // set startstate (and possibly last, if tap_bits == 0)
3173 last_state = next_state;
3174 DEBUG_JTAG_IO("TAP/SM: START state: %s", tap_state_name(next_state));
3175
3176 tms_buffer = (const u8 *)tms_buf;
3177 tdi_buffer = (const u8 *)tdi_buf;
3178
3179 tap_bytes = TAP_SCAN_BYTES(tap_bits);
3180 DEBUG_JTAG_IO("TAP/SM: TMS bits: %u (bytes: %u)", tap_bits, tap_bytes);
3181
3182 tap_out_bits = 0;
3183 for(cur_byte = 0; cur_byte < tap_bytes; cur_byte++)
3184 {
3185 for(cur_bit = 0; cur_bit < 8; cur_bit++)
3186 {
3187 // make sure we do not run off the end of the buffers
3188 unsigned tap_bit = cur_byte * 8 + cur_bit;
3189 if (tap_bit == tap_bits)
3190 break;
3191
3192 // check and save TMS bit
3193 tap_bit = !!(tms_buffer[cur_byte] & (1 << cur_bit));
3194 JTAG_DEBUG_STATE_APPEND(tms_str, tap_out_bits, tap_bit);
3195
3196 // use TMS bit to find the next TAP state
3197 next_state = tap_state_transition(last_state, tap_bit);
3198
3199 // check and store TDI bit
3200 tap_bit = !!(tdi_buffer[cur_byte] & (1 << cur_bit));
3201 JTAG_DEBUG_STATE_APPEND(tdi_str, tap_out_bits, tap_bit);
3202
3203 // increment TAP bits
3204 tap_out_bits++;
3205
3206 // Only show TDO bits on state transitions, or
3207 // after some number of bits in the same state.
3208 if ((next_state == last_state) && (tap_out_bits < 32))
3209 continue;
3210
3211 // terminate strings and display state transition
3212 tms_str[tap_out_bits] = tdi_str[tap_out_bits] = 0;
3213 JTAG_DEBUG_STATE_PRINT(last_state, next_state, tms_str, tdi_str);
3214
3215 // reset state
3216 last_state = next_state;
3217 tap_out_bits = 0;
3218 }
3219 }
3220
3221 if (tap_out_bits)
3222 {
3223 // terminate strings and display state transition
3224 tms_str[tap_out_bits] = tdi_str[tap_out_bits] = 0;
3225 JTAG_DEBUG_STATE_PRINT(last_state, next_state, tms_str, tdi_str);
3226 }
3227
3228 DEBUG_JTAG_IO("TAP/SM: FINAL state: %s", tap_state_name(next_state));
3229
3230 return next_state;
3231 }
3232 #endif // _DEBUG_JTAG_IO_
3233
3234 static int handle_tms_sequence_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
3235 {
3236 if (argc == 1)
3237 {
3238 if (strcmp(args[0], "short") == 0)
3239 {
3240 tms_seqs=&short_tms_seqs;
3241 }
3242 else if (strcmp(args[0], "long") == 0)
3243 {
3244 tms_seqs=&old_tms_seqs;
3245 } else
3246 {
3247 return ERROR_COMMAND_SYNTAX_ERROR;
3248 }
3249 } else if (argc != 0)
3250 {
3251 return ERROR_COMMAND_SYNTAX_ERROR;
3252 }
3253
3254 command_print(cmd_ctx, "tms sequence is %s", (tms_seqs==&short_tms_seqs) ? "short": "long");
3255
3256 return ERROR_OK;
3257 }
3258
3259 /*-----</Cable Helper API>--------------------------------------*/
3260
3261
3262 /**
3263 * Function jtag_add_statemove
3264 * moves from the current state to the goal \a state. This needs
3265 * to be handled according to the xsvf spec, see the XSTATE command
3266 * description.
3267 */
3268 int jtag_add_statemove(tap_state_t goal_state)
3269 {
3270 int retval = ERROR_OK;
3271
3272 tap_state_t moves[8];
3273 tap_state_t cur_state = cmd_queue_cur_state;
3274 int i;
3275 int tms_bits;
3276 int tms_count;
3277
3278 LOG_DEBUG( "cur_state=%s goal_state=%s",
3279 tap_state_name(cur_state),
3280 tap_state_name(goal_state) );
3281
3282
3283 /* From the XSVF spec, pertaining to XSTATE:
3284
3285 For special states known as stable states (Test-Logic-Reset,
3286 Run-Test/Idle, Pause-DR, Pause- IR), an XSVF interpreter follows
3287 predefined TAP state paths when the starting state is a stable state and
3288 when the XSTATE specifies a new stable state (see the STATE command in
3289 the [Ref 5] for the TAP state paths between stable states). For
3290 non-stable states, XSTATE should specify a state that is only one TAP
3291 state transition distance from the current TAP state to avoid undefined
3292 TAP state paths. A sequence of multiple XSTATE commands can be issued to
3293 transition the TAP through a specific state path.
3294 */
3295
3296 if (goal_state==cur_state )
3297 ; /* nothing to do */
3298
3299 else if( goal_state==TAP_RESET )
3300 {
3301 jtag_add_tlr();
3302 }
3303
3304 else if( tap_is_state_stable(cur_state) && tap_is_state_stable(goal_state) )
3305 {
3306 /* note: unless tms_bits holds a path that agrees with [Ref 5] in above
3307 spec, then this code is not fully conformant to the xsvf spec. This
3308 puts a burden on tap_get_tms_path() function from the xsvf spec.
3309 If in doubt, you should confirm that that burden is being met.
3310 */
3311
3312 tms_bits = tap_get_tms_path(cur_state, goal_state);
3313 tms_count = tap_get_tms_path_len(cur_state, goal_state);
3314
3315 assert( (unsigned) tms_count < DIM(moves) );
3316
3317 for (i=0; i<tms_count; i++, tms_bits>>=1)
3318 {
3319 bool bit = tms_bits & 1;
3320
3321 cur_state = tap_state_transition(cur_state, bit);
3322 moves[i] = cur_state;
3323 }
3324
3325 jtag_add_pathmove(tms_count, moves);
3326 }
3327
3328 /* else state must be immediately reachable in one clock cycle, and does not
3329 need to be a stable state.
3330 */
3331 else if( tap_state_transition(cur_state, true) == goal_state
3332 || tap_state_transition(cur_state, false) == goal_state )
3333 {
3334 /* move a single state */
3335 moves[0] = goal_state;
3336 jtag_add_pathmove( 1, moves );
3337 }
3338
3339 else
3340 {
3341 retval = ERROR_FAIL;
3342 }
3343
3344 return retval;
3345 }
3346
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