jtag_add_shift() fn - minidriver work in progress.
[openocd.git] / src / jtag / jtag.c
1 /***************************************************************************
2 * Copyright (C) 2005 by Dominic Rath *
3 * Dominic.Rath@gmx.de *
4 * *
5 * This program is free software; you can redistribute it and/or modify *
6 * it under the terms of the GNU General Public License as published by *
7 * the Free Software Foundation; either version 2 of the License, or *
8 * (at your option) any later version. *
9 * *
10 * This program is distributed in the hope that it will be useful, *
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
13 * GNU General Public License for more details. *
14 * *
15 * You should have received a copy of the GNU General Public License *
16 * along with this program; if not, write to the *
17 * Free Software Foundation, Inc., *
18 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
19 ***************************************************************************/
20 #ifdef HAVE_CONFIG_H
21 #include "config.h"
22 #endif
23
24 #include "replacements.h"
25
26 #include "jtag.h"
27
28 #include "command.h"
29 #include "log.h"
30 #include "interpreter.h"
31
32 #include "stdlib.h"
33 #include "string.h"
34 #include <unistd.h>
35
36 #ifndef MINIDRIVER
37 /* this allows JTAG devices to implement the entire jtag_xxx() layer in hw/sw */
38 #define MINIDRIVER(a) a
39 #endif
40
41
42 /* note that this is not marked as static as it must be available from outside jtag.c for those
43 that implement the jtag_xxx() minidriver layer
44 */
45 int jtag_error=ERROR_OK;
46
47
48 char* tap_state_strings[16] =
49 {
50 "tlr",
51 "sds", "cd", "sd", "e1d", "pd", "e2d", "ud",
52 "rti",
53 "sis", "ci", "si", "e1i", "pi", "e2i", "ui"
54 };
55
56 typedef struct cmd_queue_page_s
57 {
58 void *address;
59 size_t used;
60 struct cmd_queue_page_s *next;
61 } cmd_queue_page_t;
62
63 #define CMD_QUEUE_PAGE_SIZE (1024 * 1024)
64 static cmd_queue_page_t *cmd_queue_pages = NULL;
65
66 /* tap_move[i][j]: tap movement command to go from state i to state j
67 * 0: Test-Logic-Reset
68 * 1: Run-Test/Idle
69 * 2: Shift-DR
70 * 3: Pause-DR
71 * 4: Shift-IR
72 * 5: Pause-IR
73 *
74 * SD->SD and SI->SI have to be caught in interface specific code
75 */
76 u8 tap_move[6][6] =
77 {
78 /* TLR RTI SD PD SI PI */
79 {0x7f, 0x00, 0x17, 0x0a, 0x1b, 0x16}, /* TLR */
80 {0x7f, 0x00, 0x25, 0x05, 0x2b, 0x0b}, /* RTI */
81 {0x7f, 0x31, 0x00, 0x01, 0x0f, 0x2f}, /* SD */
82 {0x7f, 0x30, 0x20, 0x17, 0x1e, 0x2f}, /* PD */
83 {0x7f, 0x31, 0x07, 0x17, 0x00, 0x01}, /* SI */
84 {0x7f, 0x30, 0x1c, 0x17, 0x20, 0x2f} /* PI */
85 };
86
87 int tap_move_map[16] = {
88 0, -1, -1, 2, -1, 3, -1, -1,
89 1, -1, -1, 4, -1, 5, -1, -1
90 };
91
92 tap_transition_t tap_transitions[16] =
93 {
94 {TAP_TLR, TAP_RTI}, /* TLR */
95 {TAP_SIS, TAP_CD}, /* SDS */
96 {TAP_E1D, TAP_SD}, /* CD */
97 {TAP_E1D, TAP_SD}, /* SD */
98 {TAP_UD, TAP_PD}, /* E1D */
99 {TAP_E2D, TAP_PD}, /* PD */
100 {TAP_UD, TAP_SD}, /* E2D */
101 {TAP_SDS, TAP_RTI}, /* UD */
102 {TAP_SDS, TAP_RTI}, /* RTI */
103 {TAP_TLR, TAP_CI}, /* SIS */
104 {TAP_E1I, TAP_SI}, /* CI */
105 {TAP_E1I, TAP_SI}, /* SI */
106 {TAP_UI, TAP_PI}, /* E1I */
107 {TAP_E2I, TAP_PI}, /* PI */
108 {TAP_UI, TAP_SI}, /* E2I */
109 {TAP_SDS, TAP_RTI} /* UI */
110 };
111
112 char* jtag_event_strings[] =
113 {
114 "SRST asserted",
115 "TRST asserted",
116 "SRST released",
117 "TRST released"
118 };
119
120 enum tap_state end_state = TAP_TLR;
121 enum tap_state cur_state = TAP_TLR;
122 int jtag_trst = 0;
123 int jtag_srst = 0;
124
125 jtag_command_t *jtag_command_queue = NULL;
126 jtag_command_t **last_comand_pointer = &jtag_command_queue;
127 jtag_device_t *jtag_devices = NULL;
128 int jtag_num_devices = 0;
129 int jtag_ir_scan_size = 0;
130 enum reset_types jtag_reset_config = RESET_NONE;
131 enum tap_state cmd_queue_end_state = TAP_TLR;
132 enum tap_state cmd_queue_cur_state = TAP_TLR;
133
134 int jtag_verify_capture_ir = 1;
135
136 /* how long the OpenOCD should wait before attempting JTAG communication after reset lines deasserted (in ms) */
137 int jtag_nsrst_delay = 0; /* default to no nSRST delay */
138 int jtag_ntrst_delay = 0; /* default to no nTRST delay */
139
140 /* maximum number of JTAG devices expected in the chain
141 */
142 #define JTAG_MAX_CHAIN_SIZE 20
143
144 /* callbacks to inform high-level handlers about JTAG state changes */
145 jtag_event_callback_t *jtag_event_callbacks;
146
147 /* jtag interfaces (parport, FTDI-USB, TI-USB, ...)
148 */
149 #if BUILD_PARPORT == 1
150 extern jtag_interface_t parport_interface;
151 #endif
152
153 #if BUILD_FT2232_FTD2XX == 1
154 extern jtag_interface_t ft2232_interface;
155 #endif
156
157 #if BUILD_FT2232_LIBFTDI == 1
158 extern jtag_interface_t ft2232_interface;
159 #endif
160
161 #if BUILD_AMTJTAGACCEL == 1
162 extern jtag_interface_t amt_jtagaccel_interface;
163 #endif
164
165 #if BUILD_EP93XX == 1
166 extern jtag_interface_t ep93xx_interface;
167 #endif
168
169 #if BUILD_AT91RM9200 == 1
170 extern jtag_interface_t at91rm9200_interface;
171 #endif
172
173 #if BUILD_GW16012 == 1
174 extern jtag_interface_t gw16012_interface;
175 #endif
176
177 #if BUILD_PRESTO_LIBFTDI == 1 || BUILD_PRESTO_FTD2XX == 1
178 extern jtag_interface_t presto_interface;
179 #endif
180
181 #if BUILD_USBPROG == 1
182 extern jtag_interface_t usbprog_interface;
183 #endif
184
185 jtag_interface_t *jtag_interfaces[] = {
186 #if BUILD_PARPORT == 1
187 &parport_interface,
188 #endif
189 #if BUILD_FT2232_FTD2XX == 1
190 &ft2232_interface,
191 #endif
192 #if BUILD_FT2232_LIBFTDI == 1
193 &ft2232_interface,
194 #endif
195 #if BUILD_AMTJTAGACCEL == 1
196 &amt_jtagaccel_interface,
197 #endif
198 #if BUILD_EP93XX == 1
199 &ep93xx_interface,
200 #endif
201 #if BUILD_AT91RM9200 == 1
202 &at91rm9200_interface,
203 #endif
204 #if BUILD_GW16012 == 1
205 &gw16012_interface,
206 #endif
207 #if BUILD_PRESTO_LIBFTDI == 1 || BUILD_PRESTO_FTD2XX == 1
208 &presto_interface,
209 #endif
210 #if BUILD_USBPROG == 1
211 &usbprog_interface,
212 #endif
213 NULL,
214 };
215
216 jtag_interface_t *jtag = NULL;
217
218 /* configuration */
219 jtag_interface_t *jtag_interface = NULL;
220 int jtag_speed = 0;
221
222
223 /* forward declarations */
224 int jtag_add_statemove(enum tap_state endstate);
225 int jtag_add_pathmove(int num_states, enum tap_state *path);
226 int jtag_add_runtest(int num_cycles, enum tap_state endstate);
227 int jtag_add_reset(int trst, int srst);
228 int jtag_add_end_state(enum tap_state endstate);
229 int jtag_add_sleep(u32 us);
230 int jtag_execute_queue(void);
231 int jtag_cancel_queue(void);
232
233 /* jtag commands */
234 int handle_interface_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
235 int handle_jtag_speed_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
236 int handle_jtag_device_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
237 int handle_reset_config_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
238 int handle_jtag_nsrst_delay_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
239 int handle_jtag_ntrst_delay_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
240
241 int handle_scan_chain_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
242
243 int handle_endstate_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
244 int handle_jtag_reset_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
245 int handle_runtest_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
246 int handle_statemove_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
247 int handle_irscan_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
248 int handle_drscan_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
249
250 int handle_verify_ircapture_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
251
252 int jtag_register_event_callback(int (*callback)(enum jtag_event event, void *priv), void *priv)
253 {
254 jtag_event_callback_t **callbacks_p = &jtag_event_callbacks;
255
256 if (callback == NULL)
257 {
258 return ERROR_INVALID_ARGUMENTS;
259 }
260
261 if (*callbacks_p)
262 {
263 while ((*callbacks_p)->next)
264 callbacks_p = &((*callbacks_p)->next);
265 callbacks_p = &((*callbacks_p)->next);
266 }
267
268 (*callbacks_p) = malloc(sizeof(jtag_event_callback_t));
269 (*callbacks_p)->callback = callback;
270 (*callbacks_p)->priv = priv;
271 (*callbacks_p)->next = NULL;
272
273 return ERROR_OK;
274 }
275
276 int jtag_unregister_event_callback(int (*callback)(enum jtag_event event, void *priv))
277 {
278 jtag_event_callback_t **callbacks_p = &jtag_event_callbacks;
279
280 if (callback == NULL)
281 {
282 return ERROR_INVALID_ARGUMENTS;
283 }
284
285 while (*callbacks_p)
286 {
287 jtag_event_callback_t **next = &((*callbacks_p)->next);
288 if ((*callbacks_p)->callback == callback)
289 {
290 free(*callbacks_p);
291 *callbacks_p = *next;
292 }
293 callbacks_p = next;
294 }
295
296 return ERROR_OK;
297 }
298
299 int jtag_call_event_callbacks(enum jtag_event event)
300 {
301 jtag_event_callback_t *callback = jtag_event_callbacks;
302
303 DEBUG("jtag event: %s", jtag_event_strings[event]);
304
305 while (callback)
306 {
307 callback->callback(event, callback->priv);
308 callback = callback->next;
309 }
310
311 return ERROR_OK;
312 }
313
314 /* returns a pointer to the pointer of the last command in queue
315 * this may be a pointer to the root pointer (jtag_command_queue)
316 * or to the next member of the last but one command
317 */
318 jtag_command_t** jtag_get_last_command_p(void)
319 {
320 /* jtag_command_t *cmd = jtag_command_queue;
321
322 if (cmd)
323 while (cmd->next)
324 cmd = cmd->next;
325 else
326 return &jtag_command_queue;
327
328 return &cmd->next;*/
329
330 return last_comand_pointer;
331 }
332
333 /* returns a pointer to the n-th device in the scan chain */
334 jtag_device_t* jtag_get_device(int num)
335 {
336 jtag_device_t *device = jtag_devices;
337 int i = 0;
338
339 while (device)
340 {
341 if (num == i)
342 return device;
343 device = device->next;
344 i++;
345 }
346
347 ERROR("jtag device number %d not defined", num);
348 exit(-1);
349 }
350
351 void* cmd_queue_alloc(size_t size)
352 {
353 cmd_queue_page_t **p_page = &cmd_queue_pages;
354 int offset;
355
356 if (*p_page)
357 {
358 while ((*p_page)->next)
359 p_page = &((*p_page)->next);
360 if (CMD_QUEUE_PAGE_SIZE - (*p_page)->used < size)
361 p_page = &((*p_page)->next);
362 }
363
364 if (!*p_page)
365 {
366 *p_page = malloc(sizeof(cmd_queue_page_t));
367 (*p_page)->used = 0;
368 (*p_page)->address = malloc(CMD_QUEUE_PAGE_SIZE);
369 (*p_page)->next = NULL;
370 }
371
372 offset = (*p_page)->used;
373 (*p_page)->used += size;
374
375 u8 *t=(u8 *)((*p_page)->address);
376 return t + offset;
377 }
378
379 void cmd_queue_free()
380 {
381 cmd_queue_page_t *page = cmd_queue_pages;
382
383 while (page)
384 {
385 cmd_queue_page_t *last = page;
386 free(page->address);
387 page = page->next;
388 free(last);
389 }
390
391 cmd_queue_pages = NULL;
392 }
393
394 int jtag_add_ir_scan(int num_fields, scan_field_t *fields, enum tap_state state)
395 {
396 if (jtag_trst == 1)
397 {
398 WARNING("JTAG command queued, while TRST is low (TAP in reset)");
399 jtag_error=ERROR_JTAG_TRST_ASSERTED;
400 return ERROR_JTAG_TRST_ASSERTED;
401 }
402
403 if (state != -1)
404 cmd_queue_end_state = state;
405
406 if (cmd_queue_cur_state == TAP_TLR && cmd_queue_end_state != TAP_TLR)
407 jtag_call_event_callbacks(JTAG_TRST_RELEASED);
408
409 if (cmd_queue_end_state == TAP_TLR)
410 jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
411
412 cmd_queue_cur_state = cmd_queue_end_state;
413
414 int retval=interface_jtag_add_ir_scan(num_fields, fields, state);
415 if (retval!=ERROR_OK)
416 jtag_error=retval;
417 return retval;
418 }
419
420 int MINIDRIVER(interface_jtag_add_ir_scan)(int num_fields, scan_field_t *fields, enum tap_state state)
421 {
422 jtag_command_t **last_cmd;
423 jtag_device_t *device;
424 int i, j;
425 int scan_size = 0;
426
427
428 last_cmd = jtag_get_last_command_p();
429
430 /* allocate memory for a new list member */
431 *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
432 (*last_cmd)->next = NULL;
433 last_comand_pointer = &((*last_cmd)->next);
434 (*last_cmd)->type = JTAG_SCAN;
435
436 /* allocate memory for ir scan command */
437 (*last_cmd)->cmd.scan = cmd_queue_alloc(sizeof(scan_command_t));
438 (*last_cmd)->cmd.scan->ir_scan = 1;
439 (*last_cmd)->cmd.scan->num_fields = jtag_num_devices; /* one field per device */
440 (*last_cmd)->cmd.scan->fields = cmd_queue_alloc(jtag_num_devices * sizeof(scan_field_t));
441 (*last_cmd)->cmd.scan->end_state = state;
442
443 for (i = 0; i < jtag_num_devices; i++)
444 {
445 int found = 0;
446 device = jtag_get_device(i);
447 scan_size = device->ir_length;
448 (*last_cmd)->cmd.scan->fields[i].device = i;
449 (*last_cmd)->cmd.scan->fields[i].num_bits = scan_size;
450 (*last_cmd)->cmd.scan->fields[i].in_value = NULL;
451 (*last_cmd)->cmd.scan->fields[i].in_handler = NULL; /* disable verification by default */
452
453 /* search the list */
454 for (j = 0; j < num_fields; j++)
455 {
456 if (i == fields[j].device)
457 {
458 found = 1;
459 (*last_cmd)->cmd.scan->fields[i].out_value = buf_cpy(fields[j].out_value, cmd_queue_alloc(CEIL(scan_size, 8)), scan_size);
460 (*last_cmd)->cmd.scan->fields[i].out_mask = buf_cpy(fields[j].out_mask, cmd_queue_alloc(CEIL(scan_size, 8)), scan_size);
461
462 if (jtag_verify_capture_ir)
463 {
464 if (fields[j].in_handler==NULL)
465 {
466 jtag_set_check_value((*last_cmd)->cmd.scan->fields+i, device->expected, device->expected_mask, NULL);
467 } else
468 {
469 (*last_cmd)->cmd.scan->fields[i].in_handler = fields[j].in_handler;
470 (*last_cmd)->cmd.scan->fields[i].in_handler_priv = fields[j].in_handler_priv;
471 (*last_cmd)->cmd.scan->fields[i].in_check_value = device->expected;
472 (*last_cmd)->cmd.scan->fields[i].in_check_mask = device->expected_mask;
473 }
474 }
475
476 device->bypass = 0;
477 break;
478 }
479 }
480
481 if (!found)
482 {
483 /* if a device isn't listed, set it to BYPASS */
484 (*last_cmd)->cmd.scan->fields[i].out_value = buf_set_ones(cmd_queue_alloc(CEIL(scan_size, 8)), scan_size);
485 (*last_cmd)->cmd.scan->fields[i].out_mask = NULL;
486 device->bypass = 1;
487
488 }
489
490 /* update device information */
491 buf_cpy((*last_cmd)->cmd.scan->fields[i].out_value, jtag_get_device(i)->cur_instr, scan_size);
492 }
493
494 return ERROR_OK;
495 }
496
497 int jtag_add_plain_ir_scan(int num_fields, scan_field_t *fields, enum tap_state state)
498 {
499 if (jtag_trst == 1)
500 {
501 WARNING("JTAG command queued, while TRST is low (TAP in reset)");
502 return jtag_error=ERROR_JTAG_TRST_ASSERTED;
503 }
504
505 if (state != -1)
506 cmd_queue_end_state = state;
507
508 if (cmd_queue_cur_state == TAP_TLR && cmd_queue_end_state != TAP_TLR)
509 jtag_call_event_callbacks(JTAG_TRST_RELEASED);
510
511 if (cmd_queue_end_state == TAP_TLR)
512 jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
513
514 cmd_queue_cur_state = cmd_queue_end_state;
515
516 return interface_jtag_add_plain_ir_scan(num_fields, fields, state);
517 }
518
519 int MINIDRIVER(interface_jtag_add_plain_ir_scan)(int num_fields, scan_field_t *fields, enum tap_state state)
520 {
521 int i;
522 jtag_command_t **last_cmd;
523
524 last_cmd = jtag_get_last_command_p();
525
526 /* allocate memory for a new list member */
527 *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
528 (*last_cmd)->next = NULL;
529 last_comand_pointer = &((*last_cmd)->next);
530 (*last_cmd)->type = JTAG_SCAN;
531
532 /* allocate memory for ir scan command */
533 (*last_cmd)->cmd.scan = cmd_queue_alloc(sizeof(scan_command_t));
534 (*last_cmd)->cmd.scan->ir_scan = 1;
535 (*last_cmd)->cmd.scan->num_fields = num_fields;
536 (*last_cmd)->cmd.scan->fields = cmd_queue_alloc(num_fields * sizeof(scan_field_t));
537 (*last_cmd)->cmd.scan->end_state = state;
538
539 for (i = 0; i < num_fields; i++)
540 {
541 int num_bits = fields[i].num_bits;
542 int num_bytes = CEIL(fields[i].num_bits, 8);
543 (*last_cmd)->cmd.scan->fields[i].device = fields[i].device;
544 (*last_cmd)->cmd.scan->fields[i].num_bits = num_bits;
545 (*last_cmd)->cmd.scan->fields[i].out_value = buf_cpy(fields[i].out_value, cmd_queue_alloc(num_bytes), num_bits);
546 (*last_cmd)->cmd.scan->fields[i].out_mask = buf_cpy(fields[i].out_mask, cmd_queue_alloc(num_bytes), num_bits);
547 (*last_cmd)->cmd.scan->fields[i].in_value = fields[i].in_value;
548 (*last_cmd)->cmd.scan->fields[i].in_check_value = fields[i].in_check_value;
549 (*last_cmd)->cmd.scan->fields[i].in_check_mask = fields[i].in_check_mask;
550 (*last_cmd)->cmd.scan->fields[i].in_handler = NULL;
551 (*last_cmd)->cmd.scan->fields[i].in_handler_priv = NULL;
552 }
553 return ERROR_OK;
554 }
555
556 int jtag_add_dr_scan(int num_fields, scan_field_t *fields, enum tap_state state)
557 {
558 if (jtag_trst == 1)
559 {
560 WARNING("JTAG command queued, while TRST is low (TAP in reset)");
561 return jtag_error=ERROR_JTAG_TRST_ASSERTED;
562 }
563
564 if (state != -1)
565 cmd_queue_end_state = state;
566
567 if (cmd_queue_cur_state == TAP_TLR && cmd_queue_end_state != TAP_TLR)
568 jtag_call_event_callbacks(JTAG_TRST_RELEASED);
569
570 if (cmd_queue_end_state == TAP_TLR)
571 jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
572
573 cmd_queue_cur_state = cmd_queue_end_state;
574
575 return interface_jtag_add_dr_scan(num_fields, fields, state);
576 }
577
578 int MINIDRIVER(interface_jtag_add_dr_scan)(int num_fields, scan_field_t *fields, enum tap_state state)
579 {
580 int i, j;
581 int bypass_devices = 0;
582 int field_count = 0;
583 int scan_size;
584
585 jtag_command_t **last_cmd = jtag_get_last_command_p();
586 jtag_device_t *device = jtag_devices;
587
588 /* count devices in bypass */
589 while (device)
590 {
591 if (device->bypass)
592 bypass_devices++;
593 device = device->next;
594 }
595
596 /* allocate memory for a new list member */
597 *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
598 last_comand_pointer = &((*last_cmd)->next);
599 (*last_cmd)->next = NULL;
600 (*last_cmd)->type = JTAG_SCAN;
601
602 /* allocate memory for dr scan command */
603 (*last_cmd)->cmd.scan = cmd_queue_alloc(sizeof(scan_command_t));
604 (*last_cmd)->cmd.scan->ir_scan = 0;
605 (*last_cmd)->cmd.scan->num_fields = num_fields + bypass_devices;
606 (*last_cmd)->cmd.scan->fields = cmd_queue_alloc((num_fields + bypass_devices) * sizeof(scan_field_t));
607 (*last_cmd)->cmd.scan->end_state = state;
608
609 for (i = 0; i < jtag_num_devices; i++)
610 {
611 int found = 0;
612 (*last_cmd)->cmd.scan->fields[field_count].device = i;
613
614 for (j = 0; j < num_fields; j++)
615 {
616 if (i == fields[j].device)
617 {
618 found = 1;
619 scan_size = fields[j].num_bits;
620 (*last_cmd)->cmd.scan->fields[field_count].num_bits = scan_size;
621 (*last_cmd)->cmd.scan->fields[field_count].out_value = buf_cpy(fields[j].out_value, cmd_queue_alloc(CEIL(scan_size, 8)), scan_size);
622 (*last_cmd)->cmd.scan->fields[field_count].out_mask = buf_cpy(fields[j].out_mask, cmd_queue_alloc(CEIL(scan_size, 8)), scan_size);
623 (*last_cmd)->cmd.scan->fields[field_count].in_value = fields[j].in_value;
624 (*last_cmd)->cmd.scan->fields[field_count].in_check_value = fields[j].in_check_value;
625 (*last_cmd)->cmd.scan->fields[field_count].in_check_mask = fields[j].in_check_mask;
626 (*last_cmd)->cmd.scan->fields[field_count].in_handler = fields[j].in_handler;
627 (*last_cmd)->cmd.scan->fields[field_count++].in_handler_priv = fields[j].in_handler_priv;
628 }
629 }
630 if (!found)
631 {
632 /* if a device isn't listed, the BYPASS register should be selected */
633 if (!jtag_get_device(i)->bypass)
634 {
635 ERROR("BUG: no scan data for a device not in BYPASS");
636 exit(-1);
637 }
638
639 /* program the scan field to 1 bit length, and ignore it's value */
640 (*last_cmd)->cmd.scan->fields[field_count].num_bits = 1;
641 (*last_cmd)->cmd.scan->fields[field_count].out_value = NULL;
642 (*last_cmd)->cmd.scan->fields[field_count].out_mask = NULL;
643 (*last_cmd)->cmd.scan->fields[field_count].in_value = NULL;
644 (*last_cmd)->cmd.scan->fields[field_count].in_check_value = NULL;
645 (*last_cmd)->cmd.scan->fields[field_count].in_check_mask = NULL;
646 (*last_cmd)->cmd.scan->fields[field_count].in_handler = NULL;
647 (*last_cmd)->cmd.scan->fields[field_count++].in_handler_priv = NULL;
648 }
649 else
650 {
651 /* if a device is listed, the BYPASS register must not be selected */
652 if (jtag_get_device(i)->bypass)
653 {
654 WARNING("scan data for a device in BYPASS");
655 }
656 }
657 }
658 return ERROR_OK;
659 }
660
661
662 int jtag_add_plain_dr_scan(int num_fields, scan_field_t *fields, enum tap_state state)
663 {
664 if (jtag_trst == 1)
665 {
666 WARNING("JTAG command queued, while TRST is low (TAP in reset)");
667 return jtag_error=ERROR_JTAG_TRST_ASSERTED;
668 }
669
670 if (state != -1)
671 cmd_queue_end_state = state;
672
673 if (cmd_queue_cur_state == TAP_TLR && cmd_queue_end_state != TAP_TLR)
674 jtag_call_event_callbacks(JTAG_TRST_RELEASED);
675
676 if (cmd_queue_end_state == TAP_TLR)
677 jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
678
679 cmd_queue_cur_state = cmd_queue_end_state;
680
681 return interface_jtag_add_plain_dr_scan(num_fields, fields, state);
682 }
683
684 int MINIDRIVER(interface_jtag_add_plain_dr_scan)(int num_fields, scan_field_t *fields, enum tap_state state)
685 {
686 int i;
687 jtag_command_t **last_cmd = jtag_get_last_command_p();
688
689 /* allocate memory for a new list member */
690 *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
691 last_comand_pointer = &((*last_cmd)->next);
692 (*last_cmd)->next = NULL;
693 (*last_cmd)->type = JTAG_SCAN;
694
695 /* allocate memory for scan command */
696 (*last_cmd)->cmd.scan = cmd_queue_alloc(sizeof(scan_command_t));
697 (*last_cmd)->cmd.scan->ir_scan = 0;
698 (*last_cmd)->cmd.scan->num_fields = num_fields;
699 (*last_cmd)->cmd.scan->fields = cmd_queue_alloc(num_fields * sizeof(scan_field_t));
700 (*last_cmd)->cmd.scan->end_state = state;
701
702 for (i = 0; i < num_fields; i++)
703 {
704 int num_bits = fields[i].num_bits;
705 int num_bytes = CEIL(fields[i].num_bits, 8);
706 (*last_cmd)->cmd.scan->fields[i].device = fields[i].device;
707 (*last_cmd)->cmd.scan->fields[i].num_bits = num_bits;
708 (*last_cmd)->cmd.scan->fields[i].out_value = buf_cpy(fields[i].out_value, cmd_queue_alloc(num_bytes), num_bits);
709 (*last_cmd)->cmd.scan->fields[i].out_mask = buf_cpy(fields[i].out_mask, cmd_queue_alloc(num_bytes), num_bits);
710 (*last_cmd)->cmd.scan->fields[i].in_value = fields[i].in_value;
711 (*last_cmd)->cmd.scan->fields[i].in_check_value = fields[i].in_check_value;
712 (*last_cmd)->cmd.scan->fields[i].in_check_mask = fields[i].in_check_mask;
713 (*last_cmd)->cmd.scan->fields[i].in_handler = fields[i].in_handler;
714 (*last_cmd)->cmd.scan->fields[i].in_handler_priv = fields[i].in_handler_priv;
715 }
716
717 return ERROR_OK;
718 }
719 int jtag_add_statemove(enum tap_state state)
720 {
721 if (jtag_trst == 1)
722 {
723 WARNING("JTAG command queued, while TRST is low (TAP in reset)");
724 return jtag_error=ERROR_JTAG_TRST_ASSERTED;
725 }
726
727 if (state != -1)
728 cmd_queue_end_state = state;
729
730 if (cmd_queue_cur_state == TAP_TLR && cmd_queue_end_state != TAP_TLR)
731 jtag_call_event_callbacks(JTAG_TRST_RELEASED);
732
733 if (cmd_queue_end_state == TAP_TLR)
734 jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
735
736 cmd_queue_cur_state = cmd_queue_end_state;
737
738 return interface_jtag_add_statemove(state);
739 }
740
741 int MINIDRIVER(interface_jtag_add_statemove)(enum tap_state state)
742 {
743 jtag_command_t **last_cmd = jtag_get_last_command_p();
744
745 /* allocate memory for a new list member */
746 *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
747 last_comand_pointer = &((*last_cmd)->next);
748 (*last_cmd)->next = NULL;
749 (*last_cmd)->type = JTAG_STATEMOVE;
750
751 (*last_cmd)->cmd.statemove = cmd_queue_alloc(sizeof(statemove_command_t));
752 (*last_cmd)->cmd.statemove->end_state = state;
753
754
755 return ERROR_OK;
756 }
757
758 int jtag_add_pathmove(int num_states, enum tap_state *path)
759 {
760 if (jtag_trst == 1)
761 {
762 WARNING("JTAG command queued, while TRST is low (TAP in reset)");
763 return jtag_error=ERROR_JTAG_TRST_ASSERTED;
764 }
765
766 /* the last state has to be a stable state */
767 if (tap_move_map[path[num_states - 1]] == -1)
768 {
769 ERROR("TAP path doesn't finish in a stable state");
770 return jtag_error=ERROR_JTAG_NOT_IMPLEMENTED;
771 }
772
773 if (cmd_queue_cur_state == TAP_TLR && cmd_queue_end_state != TAP_TLR)
774 jtag_call_event_callbacks(JTAG_TRST_RELEASED);
775
776 if (cmd_queue_end_state == TAP_TLR)
777 jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
778
779 cmd_queue_cur_state = path[num_states - 1];
780
781 return interface_jtag_add_pathmove(num_states, path);
782 }
783
784
785 int MINIDRIVER(interface_jtag_add_pathmove)(int num_states, enum tap_state *path)
786 {
787 jtag_command_t **last_cmd = jtag_get_last_command_p();
788 int i;
789
790 /* allocate memory for a new list member */
791 *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
792 last_comand_pointer = &((*last_cmd)->next);
793 (*last_cmd)->next = NULL;
794 (*last_cmd)->type = JTAG_PATHMOVE;
795
796 (*last_cmd)->cmd.pathmove = cmd_queue_alloc(sizeof(pathmove_command_t));
797 (*last_cmd)->cmd.pathmove->num_states = num_states;
798 (*last_cmd)->cmd.pathmove->path = cmd_queue_alloc(sizeof(enum tap_state) * num_states);
799
800 for (i = 0; i < num_states; i++)
801 (*last_cmd)->cmd.pathmove->path[i] = path[i];
802
803 return ERROR_OK;
804 }
805
806 int MINIDRIVER(interface_jtag_add_runtest)(int num_cycles, enum tap_state state)
807 {
808 jtag_command_t **last_cmd = jtag_get_last_command_p();
809
810 /* allocate memory for a new list member */
811 *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
812 (*last_cmd)->next = NULL;
813 last_comand_pointer = &((*last_cmd)->next);
814 (*last_cmd)->type = JTAG_RUNTEST;
815
816 (*last_cmd)->cmd.runtest = cmd_queue_alloc(sizeof(runtest_command_t));
817 (*last_cmd)->cmd.runtest->num_cycles = num_cycles;
818 (*last_cmd)->cmd.runtest->end_state = state;
819
820 return ERROR_OK;
821 }
822
823 int jtag_add_runtest(int num_cycles, enum tap_state state)
824 {
825 if (jtag_trst == 1)
826 {
827 jtag_error=ERROR_JTAG_QUEUE_FAILED;
828 WARNING("JTAG command queued, while TRST is low (TAP in reset)");
829 return ERROR_JTAG_TRST_ASSERTED;
830 }
831
832 if (state != -1)
833 cmd_queue_end_state = state;
834
835 if (cmd_queue_cur_state == TAP_TLR && cmd_queue_end_state != TAP_TLR)
836 jtag_call_event_callbacks(JTAG_TRST_RELEASED);
837
838 if (cmd_queue_end_state == TAP_TLR)
839 jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
840
841 cmd_queue_cur_state = cmd_queue_end_state;
842
843 /* executed by sw or hw fifo */
844 return interface_jtag_add_runtest(num_cycles, state);
845 }
846
847 int jtag_add_reset(int req_trst, int req_srst)
848 {
849 int trst_with_tms = 0;
850 int retval;
851
852 if (req_trst == -1)
853 req_trst = jtag_trst;
854
855 if (req_srst == -1)
856 req_srst = jtag_srst;
857
858 /* Make sure that jtag_reset_config allows the requested reset */
859 /* if SRST pulls TRST, we can't fulfill srst == 1 with trst == 0 */
860 if (((jtag_reset_config & RESET_SRST_PULLS_TRST) && (req_srst == 1)) && (req_trst == 0))
861 {
862 return jtag_error=ERROR_JTAG_RESET_WOULD_ASSERT_TRST;
863 }
864
865 /* if TRST pulls SRST, we reset with TAP T-L-R */
866 if (((jtag_reset_config & RESET_TRST_PULLS_SRST) && (req_trst == 1)) && (req_srst == 0))
867 {
868 req_trst = 0;
869 trst_with_tms = 1;
870 }
871
872 if (req_srst && !(jtag_reset_config & RESET_HAS_SRST))
873 {
874 ERROR("requested nSRST assertion, but the current configuration doesn't support this");
875 return jtag_error=ERROR_JTAG_RESET_CANT_SRST;
876 }
877
878 if (req_trst && !(jtag_reset_config & RESET_HAS_TRST))
879 {
880 req_trst = 0;
881 trst_with_tms = 1;
882 }
883
884 jtag_trst = req_trst;
885 jtag_srst = req_srst;
886
887 retval = interface_jtag_add_reset(req_trst, req_srst);
888 if (retval!=ERROR_OK)
889 {
890 jtag_error=retval;
891 return retval;
892 }
893
894 if (jtag_srst)
895 {
896 jtag_call_event_callbacks(JTAG_SRST_ASSERTED);
897 }
898 else
899 {
900 jtag_call_event_callbacks(JTAG_SRST_RELEASED);
901 if (jtag_nsrst_delay)
902 jtag_add_sleep(jtag_nsrst_delay * 1000);
903 }
904
905 if (trst_with_tms)
906 {
907 jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
908 jtag_add_end_state(TAP_TLR);
909 jtag_add_statemove(TAP_TLR);
910
911 return ERROR_OK;
912 }
913
914 if (jtag_trst)
915 {
916 /* we just asserted nTRST, so we're now in Test-Logic-Reset,
917 * and inform possible listeners about this
918 */
919 cmd_queue_cur_state = TAP_TLR;
920 jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
921 }
922 else
923 {
924 /* the nTRST line got deasserted, so we're still in Test-Logic-Reset,
925 * but we might want to add a delay to give the TAP time to settle
926 */
927 if (jtag_ntrst_delay)
928 jtag_add_sleep(jtag_ntrst_delay * 1000);
929 }
930
931 return retval;
932
933 }
934
935 int MINIDRIVER(interface_jtag_add_reset)(int req_trst, int req_srst)
936 {
937 jtag_command_t **last_cmd = jtag_get_last_command_p();
938
939 /* allocate memory for a new list member */
940 *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
941 (*last_cmd)->next = NULL;
942 last_comand_pointer = &((*last_cmd)->next);
943 (*last_cmd)->type = JTAG_RESET;
944
945 (*last_cmd)->cmd.reset = cmd_queue_alloc(sizeof(reset_command_t));
946 (*last_cmd)->cmd.reset->trst = req_trst;
947 (*last_cmd)->cmd.reset->srst = req_srst;
948
949
950 return ERROR_OK;
951 }
952
953 int MINIDRIVER(interface_jtag_add_end_state)(enum tap_state state)
954 {
955 jtag_command_t **last_cmd = jtag_get_last_command_p();
956
957 /* allocate memory for a new list member */
958 *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
959 (*last_cmd)->next = NULL;
960 last_comand_pointer = &((*last_cmd)->next);
961 (*last_cmd)->type = JTAG_END_STATE;
962
963 (*last_cmd)->cmd.end_state = cmd_queue_alloc(sizeof(end_state_command_t));
964 (*last_cmd)->cmd.end_state->end_state = state;
965
966 return ERROR_OK;
967 }
968
969 int jtag_add_end_state(enum tap_state state)
970 {
971 int retval = interface_jtag_add_end_state(state);
972 if (state != -1)
973 cmd_queue_end_state = state;
974 return retval;
975 }
976
977 int MINIDRIVER(interface_jtag_add_sleep)(u32 us)
978 {
979 jtag_command_t **last_cmd = jtag_get_last_command_p();
980
981 /* allocate memory for a new list member */
982 *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
983 (*last_cmd)->next = NULL;
984 last_comand_pointer = &((*last_cmd)->next);
985 (*last_cmd)->type = JTAG_SLEEP;
986
987 (*last_cmd)->cmd.sleep = cmd_queue_alloc(sizeof(sleep_command_t));
988 (*last_cmd)->cmd.sleep->us = us;
989
990 return ERROR_OK;
991 }
992
993 int jtag_add_sleep(u32 us)
994 {
995 return interface_jtag_add_sleep(us);
996 }
997
998 int jtag_scan_size(scan_command_t *cmd)
999 {
1000 int bit_count = 0;
1001 int i;
1002
1003 /* count bits in scan command */
1004 for (i = 0; i < cmd->num_fields; i++)
1005 {
1006 bit_count += cmd->fields[i].num_bits;
1007 }
1008
1009 return bit_count;
1010 }
1011
1012 int jtag_build_buffer(scan_command_t *cmd, u8 **buffer)
1013 {
1014 int bit_count = 0;
1015 int i;
1016
1017 bit_count = jtag_scan_size(cmd);
1018 *buffer = malloc(CEIL(bit_count, 8));
1019
1020 bit_count = 0;
1021
1022 for (i = 0; i < cmd->num_fields; i++)
1023 {
1024 if (cmd->fields[i].out_value)
1025 {
1026 #ifdef _DEBUG_JTAG_IO_
1027 char* char_buf = buf_to_str(cmd->fields[i].out_value, (cmd->fields[i].num_bits > 64) ? 64 : cmd->fields[i].num_bits, 16);
1028 #endif
1029 buf_set_buf(cmd->fields[i].out_value, 0, *buffer, bit_count, cmd->fields[i].num_bits);
1030 #ifdef _DEBUG_JTAG_IO_
1031 DEBUG("fields[%i].out_value: 0x%s", i, char_buf);
1032 free(char_buf);
1033 #endif
1034 }
1035
1036 bit_count += cmd->fields[i].num_bits;
1037 }
1038
1039 return bit_count;
1040
1041 }
1042
1043 int jtag_read_buffer(u8 *buffer, scan_command_t *cmd)
1044 {
1045 int i;
1046 int bit_count = 0;
1047 int retval;
1048
1049 /* we return ERROR_OK, unless a check fails, or a handler reports a problem */
1050 retval = ERROR_OK;
1051
1052 for (i = 0; i < cmd->num_fields; i++)
1053 {
1054 /* if neither in_value nor in_handler
1055 * are specified we don't have to examine this field
1056 */
1057 if (cmd->fields[i].in_value || cmd->fields[i].in_handler)
1058 {
1059 int num_bits = cmd->fields[i].num_bits;
1060 u8 *captured = buf_set_buf(buffer, bit_count, malloc(CEIL(num_bits, 8)), 0, num_bits);
1061
1062 #ifdef _DEBUG_JTAG_IO_
1063 char *char_buf;
1064
1065 char_buf = buf_to_str(captured, (num_bits > 64) ? 64 : num_bits, 16);
1066 DEBUG("fields[%i].in_value: 0x%s", i, char_buf);
1067 free(char_buf);
1068 #endif
1069
1070 if (cmd->fields[i].in_value)
1071 {
1072 buf_cpy(captured, cmd->fields[i].in_value, num_bits);
1073
1074 if (cmd->fields[i].in_handler)
1075 {
1076 if (cmd->fields[i].in_handler(cmd->fields[i].in_value, cmd->fields[i].in_handler_priv, cmd->fields+i) != ERROR_OK)
1077 {
1078 WARNING("in_handler reported a failed check");
1079 retval = ERROR_JTAG_QUEUE_FAILED;
1080 }
1081 }
1082 }
1083
1084 /* no in_value specified, but a handler takes care of the scanned data */
1085 if (cmd->fields[i].in_handler && (!cmd->fields[i].in_value))
1086 {
1087 if (cmd->fields[i].in_handler(captured, cmd->fields[i].in_handler_priv, cmd->fields+i) != ERROR_OK)
1088 {
1089 /* We're going to call the error:handler later, but if the in_handler
1090 * reported an error we report this failure upstream
1091 */
1092 WARNING("in_handler reported a failed check");
1093 retval = ERROR_JTAG_QUEUE_FAILED;
1094 }
1095 }
1096
1097 free(captured);
1098 }
1099 bit_count += cmd->fields[i].num_bits;
1100 }
1101
1102 return retval;
1103 }
1104
1105 int jtag_check_value(u8 *captured, void *priv, scan_field_t *field)
1106 {
1107 int retval = ERROR_OK;
1108 int num_bits = field->num_bits;
1109
1110 int compare_failed = 0;
1111
1112 if (field->in_check_mask)
1113 compare_failed = buf_cmp_mask(captured, field->in_check_value, field->in_check_mask, num_bits);
1114 else
1115 compare_failed = buf_cmp(captured, field->in_check_value, num_bits);
1116
1117 if (compare_failed)
1118 {
1119 /* An error handler could have caught the failing check
1120 * only report a problem when there wasn't a handler, or if the handler
1121 * acknowledged the error
1122 */
1123 if (compare_failed)
1124 {
1125 char *captured_char = buf_to_str(captured, (num_bits > 64) ? 64 : num_bits, 16);
1126 char *in_check_value_char = buf_to_str(field->in_check_value, (num_bits > 64) ? 64 : num_bits, 16);
1127
1128 if (field->in_check_mask)
1129 {
1130 char *in_check_mask_char;
1131 in_check_mask_char = buf_to_str(field->in_check_mask, (num_bits > 64) ? 64 : num_bits, 16);
1132 WARNING("value captured during scan didn't pass the requested check: captured: 0x%s check_value: 0x%s check_mask: 0x%s", captured_char, in_check_value_char, in_check_mask_char);
1133 free(in_check_mask_char);
1134 }
1135 else
1136 {
1137 WARNING("value captured during scan didn't pass the requested check: captured: 0x%s check_value: 0x%s", captured_char, in_check_value_char);
1138 }
1139
1140 free(captured_char);
1141 free(in_check_value_char);
1142
1143 retval = ERROR_JTAG_QUEUE_FAILED;
1144 }
1145
1146 }
1147 return retval;
1148 }
1149
1150 /*
1151 set up checking of this field using the in_handler. The values passed in must be valid until
1152 after jtag_execute() has completed.
1153 */
1154 void jtag_set_check_value(scan_field_t *field, u8 *value, u8 *mask, error_handler_t *in_error_handler)
1155 {
1156 if (value)
1157 field->in_handler = jtag_check_value;
1158 else
1159 field->in_handler = NULL; /* No check, e.g. embeddedice uses value==NULL to indicate no check */
1160 field->in_handler_priv = NULL; /* this will be filled in at the invocation site to point to the field duplicate */
1161 field->in_check_value = value;
1162 field->in_check_mask = mask;
1163 }
1164
1165 enum scan_type jtag_scan_type(scan_command_t *cmd)
1166 {
1167 int i;
1168 int type = 0;
1169
1170 for (i = 0; i < cmd->num_fields; i++)
1171 {
1172 if (cmd->fields[i].in_value || cmd->fields[i].in_handler)
1173 type |= SCAN_IN;
1174 if (cmd->fields[i].out_value)
1175 type |= SCAN_OUT;
1176 }
1177
1178 return type;
1179 }
1180
1181 int MINIDRIVER(interface_jtag_execute_queue)(void)
1182 {
1183 int retval;
1184
1185 retval = jtag->execute_queue();
1186
1187 cmd_queue_free();
1188
1189 jtag_command_queue = NULL;
1190 last_comand_pointer = &jtag_command_queue;
1191
1192 jtag_error=ERROR_OK;
1193
1194 return retval;
1195 }
1196
1197 int jtag_execute_queue(void)
1198 {
1199 int retval=interface_jtag_execute_queue();
1200 if (retval!=ERROR_OK)
1201 return retval;
1202 retval=jtag_error;
1203 jtag_error=ERROR_OK;
1204 return retval;
1205 }
1206
1207 int jtag_reset_callback(enum jtag_event event, void *priv)
1208 {
1209 jtag_device_t *device = priv;
1210
1211 DEBUG("-");
1212
1213 if (event == JTAG_TRST_ASSERTED)
1214 {
1215 buf_set_ones(device->cur_instr, device->ir_length);
1216 device->bypass = 1;
1217 }
1218
1219 return ERROR_OK;
1220 }
1221
1222 void jtag_sleep(u32 us)
1223 {
1224 usleep(us);
1225 }
1226
1227 /* Try to examine chain layout according to IEEE 1149.1 ยง12
1228 */
1229 int jtag_examine_chain()
1230 {
1231 jtag_device_t *device = jtag_devices;
1232 scan_field_t field;
1233 u8 idcode_buffer[JTAG_MAX_CHAIN_SIZE * 4];
1234 int i;
1235 int bit_count;
1236 int device_count = 0;
1237 u8 zero_check = 0x0;
1238 u8 one_check = 0xff;
1239
1240 field.device = 0;
1241 field.num_bits = sizeof(idcode_buffer) * 8;
1242 field.out_value = idcode_buffer;
1243 field.out_mask = NULL;
1244 field.in_value = idcode_buffer;
1245 field.in_check_value = NULL;
1246 field.in_check_mask = NULL;
1247 field.in_handler = NULL;
1248 field.in_handler_priv = NULL;
1249
1250 for (i = 0; i < JTAG_MAX_CHAIN_SIZE; i++)
1251 {
1252 buf_set_u32(idcode_buffer, i * 32, 32, 0x000000FF);
1253 }
1254
1255 jtag_add_plain_dr_scan(1, &field, TAP_TLR);
1256 jtag_execute_queue();
1257
1258 for (i = 0; i < JTAG_MAX_CHAIN_SIZE * 4; i++)
1259 {
1260 zero_check |= idcode_buffer[i];
1261 one_check &= idcode_buffer[i];
1262 }
1263
1264 /* if there wasn't a single non-zero bit or if all bits were one, the scan isn't valid */
1265 if ((zero_check == 0x00) || (one_check == 0xff))
1266 {
1267 ERROR("JTAG communication failure, check connection, JTAG interface, target power etc.");
1268 return ERROR_JTAG_INIT_FAILED;
1269 }
1270
1271 for (bit_count = 0; bit_count < (JTAG_MAX_CHAIN_SIZE * 32) - 31;)
1272 {
1273 u32 idcode = buf_get_u32(idcode_buffer, bit_count, 32);
1274 if ((idcode & 1) == 0)
1275 {
1276 /* LSB must not be 0, this indicates a device in bypass */
1277 device_count++;
1278
1279 bit_count += 1;
1280 }
1281 else
1282 {
1283 u32 manufacturer;
1284 u32 part;
1285 u32 version;
1286
1287 if (idcode == 0x000000FF)
1288 {
1289 /* End of chain (invalid manufacturer ID) */
1290 break;
1291 }
1292
1293 if (device)
1294 {
1295 device->idcode = idcode;
1296 device = device->next;
1297 }
1298 device_count++;
1299
1300 manufacturer = (idcode & 0xffe) >> 1;
1301 part = (idcode & 0xffff000) >> 12;
1302 version = (idcode & 0xf0000000) >> 28;
1303
1304 INFO("JTAG device found: 0x%8.8x (Manufacturer: 0x%3.3x, Part: 0x%4.4x, Version: 0x%1.1x)",
1305 idcode, manufacturer, part, version);
1306
1307 bit_count += 32;
1308 }
1309 }
1310
1311 /* see if number of discovered devices matches configuration */
1312 if (device_count != jtag_num_devices)
1313 {
1314 ERROR("number of discovered devices in JTAG chain (%i) doesn't match configuration (%i)",
1315 device_count, jtag_num_devices);
1316 ERROR("check the config file and ensure proper JTAG communication (connections, speed, ...)");
1317 return ERROR_JTAG_INIT_FAILED;
1318 }
1319
1320 return ERROR_OK;
1321 }
1322
1323 int jtag_validate_chain()
1324 {
1325 jtag_device_t *device = jtag_devices;
1326 int total_ir_length = 0;
1327 u8 *ir_test = NULL;
1328 scan_field_t field;
1329 int chain_pos = 0;
1330
1331 while (device)
1332 {
1333 total_ir_length += device->ir_length;
1334 device = device->next;
1335 }
1336
1337 total_ir_length += 2;
1338 ir_test = malloc(CEIL(total_ir_length, 8));
1339 buf_set_ones(ir_test, total_ir_length);
1340
1341 field.device = 0;
1342 field.num_bits = total_ir_length;
1343 field.out_value = ir_test;
1344 field.out_mask = NULL;
1345 field.in_value = ir_test;
1346 field.in_check_value = NULL;
1347 field.in_check_mask = NULL;
1348 field.in_handler = NULL;
1349 field.in_handler_priv = NULL;
1350
1351 jtag_add_plain_ir_scan(1, &field, TAP_TLR);
1352 jtag_execute_queue();
1353
1354 device = jtag_devices;
1355 while (device)
1356 {
1357 if (buf_get_u32(ir_test, chain_pos, 2) != 0x1)
1358 {
1359 char *cbuf = buf_to_str(ir_test, total_ir_length, 16);
1360 ERROR("Error validating JTAG scan chain, IR mismatch, scan returned 0x%s", cbuf);
1361 free(cbuf);
1362 free(ir_test);
1363 return ERROR_JTAG_INIT_FAILED;
1364 }
1365 chain_pos += device->ir_length;
1366 device = device->next;
1367 }
1368
1369 if (buf_get_u32(ir_test, chain_pos, 2) != 0x3)
1370 {
1371 char *cbuf = buf_to_str(ir_test, total_ir_length, 16);
1372 ERROR("Error validating JTAG scan chain, IR mismatch, scan returned 0x%s", cbuf);
1373 free(cbuf);
1374 free(ir_test);
1375 return ERROR_JTAG_INIT_FAILED;
1376 }
1377
1378 free(ir_test);
1379
1380 return ERROR_OK;
1381 }
1382
1383 int jtag_register_commands(struct command_context_s *cmd_ctx)
1384 {
1385 register_command(cmd_ctx, NULL, "interface", handle_interface_command,
1386 COMMAND_CONFIG, NULL);
1387 register_command(cmd_ctx, NULL, "jtag_speed", handle_jtag_speed_command,
1388 COMMAND_ANY, "set jtag speed (if supported) <speed>");
1389 register_command(cmd_ctx, NULL, "jtag_device", handle_jtag_device_command,
1390 COMMAND_CONFIG, "jtag_device <ir_length> <ir_expected> <ir_mask>");
1391 register_command(cmd_ctx, NULL, "reset_config", handle_reset_config_command,
1392 COMMAND_CONFIG, NULL);
1393 register_command(cmd_ctx, NULL, "jtag_nsrst_delay", handle_jtag_nsrst_delay_command,
1394 COMMAND_CONFIG, NULL);
1395 register_command(cmd_ctx, NULL, "jtag_ntrst_delay", handle_jtag_ntrst_delay_command,
1396 COMMAND_CONFIG, NULL);
1397
1398 register_command(cmd_ctx, NULL, "scan_chain", handle_scan_chain_command,
1399 COMMAND_EXEC, "print current scan chain configuration");
1400
1401 register_command(cmd_ctx, NULL, "endstate", handle_endstate_command,
1402 COMMAND_EXEC, "finish JTAG operations in <tap_state>");
1403 register_command(cmd_ctx, NULL, "jtag_reset", handle_jtag_reset_command,
1404 COMMAND_EXEC, "toggle reset lines <trst> <srst>");
1405 register_command(cmd_ctx, NULL, "runtest", handle_runtest_command,
1406 COMMAND_EXEC, "move to Run-Test/Idle, and execute <num_cycles>");
1407 register_command(cmd_ctx, NULL, "statemove", handle_statemove_command,
1408 COMMAND_EXEC, "move to current endstate or [tap_state]");
1409 register_command(cmd_ctx, NULL, "irscan", handle_irscan_command,
1410 COMMAND_EXEC, "execute IR scan <device> <instr> [dev2] [instr2] ...");
1411 register_command(cmd_ctx, NULL, "drscan", handle_drscan_command,
1412 COMMAND_EXEC, "execute DR scan <device> <var> [dev2] [var2] ...");
1413
1414 register_command(cmd_ctx, NULL, "verify_ircapture", handle_verify_ircapture_command,
1415 COMMAND_ANY, "verify value captured during Capture-IR <enable|disable>");
1416 return ERROR_OK;
1417 }
1418
1419 int jtag_interface_init(struct command_context_s *cmd_ctx)
1420 {
1421 if (!jtag_interface)
1422 {
1423 /* nothing was previously specified by "interface" command */
1424 ERROR("JTAG interface has to be specified, see \"interface\" command");
1425 return ERROR_JTAG_INVALID_INTERFACE;
1426 }
1427
1428 if (jtag_interface->init() != ERROR_OK)
1429 return ERROR_JTAG_INIT_FAILED;
1430
1431 jtag = jtag_interface;
1432 return ERROR_OK;
1433 }
1434
1435 int jtag_init(struct command_context_s *cmd_ctx)
1436 {
1437 int validate_tries = 0;
1438 jtag_device_t *device;
1439
1440 DEBUG("-");
1441
1442 if (!jtag && jtag_interface_init(cmd_ctx) != ERROR_OK)
1443 return ERROR_JTAG_INIT_FAILED;
1444
1445 device = jtag_devices;
1446 jtag_ir_scan_size = 0;
1447 jtag_num_devices = 0;
1448 while (device != NULL)
1449 {
1450 jtag_ir_scan_size += device->ir_length;
1451 jtag_num_devices++;
1452 device = device->next;
1453 }
1454
1455 jtag_add_statemove(TAP_TLR);
1456 jtag_execute_queue();
1457
1458 /* examine chain first, as this could discover the real chain layout */
1459 if (jtag_examine_chain() != ERROR_OK)
1460 {
1461 ERROR("trying to validate configured JTAG chain anyway...");
1462 }
1463
1464 while (jtag_validate_chain() != ERROR_OK)
1465 {
1466 validate_tries++;
1467 if (validate_tries > 5)
1468 {
1469 ERROR("Could not validate JTAG chain, exit");
1470 jtag = NULL;
1471 return ERROR_JTAG_INVALID_INTERFACE;
1472 }
1473 usleep(10000);
1474 }
1475
1476 return ERROR_OK;
1477 }
1478
1479 int handle_interface_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1480 {
1481 int i;
1482
1483 /* check whether the interface is already configured */
1484 if (jtag_interface)
1485 {
1486 WARNING("Interface already configured, ignoring");
1487 return ERROR_OK;
1488 }
1489
1490 /* interface name is a mandatory argument */
1491 if (argc < 1 || args[0][0] == '\0')
1492 {
1493 return ERROR_COMMAND_SYNTAX_ERROR;
1494 }
1495
1496 for (i=0; jtag_interfaces[i]; i++)
1497 {
1498 if (strcmp(args[0], jtag_interfaces[i]->name) == 0)
1499 {
1500 if (jtag_interfaces[i]->register_commands(cmd_ctx) != ERROR_OK)
1501 exit(-1);
1502
1503 jtag_interface = jtag_interfaces[i];
1504 return ERROR_OK;
1505 }
1506 }
1507
1508 /* no valid interface was found (i.e. the configuration option,
1509 * didn't match one of the compiled-in interfaces
1510 */
1511 ERROR("No valid jtag interface found (%s)", args[0]);
1512 ERROR("compiled-in jtag interfaces:");
1513 for (i = 0; jtag_interfaces[i]; i++)
1514 {
1515 ERROR("%i: %s", i, jtag_interfaces[i]->name);
1516 }
1517
1518 return ERROR_JTAG_INVALID_INTERFACE;
1519 }
1520
1521 int handle_jtag_device_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1522 {
1523 jtag_device_t **last_device_p = &jtag_devices;
1524
1525 if (*last_device_p)
1526 {
1527 while ((*last_device_p)->next)
1528 last_device_p = &((*last_device_p)->next);
1529 last_device_p = &((*last_device_p)->next);
1530 }
1531
1532 if (argc < 3)
1533 return ERROR_OK;
1534
1535 *last_device_p = malloc(sizeof(jtag_device_t));
1536 (*last_device_p)->ir_length = strtoul(args[0], NULL, 0);
1537
1538 (*last_device_p)->expected = malloc((*last_device_p)->ir_length);
1539 buf_set_u32((*last_device_p)->expected, 0, (*last_device_p)->ir_length, strtoul(args[1], NULL, 0));
1540 (*last_device_p)->expected_mask = malloc((*last_device_p)->ir_length);
1541 buf_set_u32((*last_device_p)->expected_mask, 0, (*last_device_p)->ir_length, strtoul(args[2], NULL, 0));
1542
1543 (*last_device_p)->cur_instr = malloc((*last_device_p)->ir_length);
1544 (*last_device_p)->bypass = 1;
1545 buf_set_ones((*last_device_p)->cur_instr, (*last_device_p)->ir_length);
1546
1547 (*last_device_p)->next = NULL;
1548
1549 jtag_register_event_callback(jtag_reset_callback, (*last_device_p));
1550
1551 jtag_num_devices++;
1552
1553 return ERROR_OK;
1554 }
1555
1556 int handle_scan_chain_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1557 {
1558 jtag_device_t *device = jtag_devices;
1559 int device_count = 0;
1560
1561 while (device)
1562 {
1563 u32 expected, expected_mask, cur_instr;
1564 expected = buf_get_u32(device->expected, 0, device->ir_length);
1565 expected_mask = buf_get_u32(device->expected_mask, 0, device->ir_length);
1566 cur_instr = buf_get_u32(device->cur_instr, 0, device->ir_length);
1567 command_print(cmd_ctx, "%i: idcode: 0x%8.8x ir length %i, ir capture 0x%x, ir mask 0x%x, current instruction 0x%x", device_count, device->idcode, device->ir_length, expected, expected_mask, cur_instr);
1568 device = device->next;
1569 device_count++;
1570 }
1571
1572 return ERROR_OK;
1573 }
1574
1575 int handle_reset_config_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1576 {
1577 if (argc >= 1)
1578 {
1579 if (strcmp(args[0], "none") == 0)
1580 jtag_reset_config = RESET_NONE;
1581 else if (strcmp(args[0], "trst_only") == 0)
1582 jtag_reset_config = RESET_HAS_TRST;
1583 else if (strcmp(args[0], "srst_only") == 0)
1584 jtag_reset_config = RESET_HAS_SRST;
1585 else if (strcmp(args[0], "trst_and_srst") == 0)
1586 jtag_reset_config = RESET_TRST_AND_SRST;
1587 else
1588 {
1589 ERROR("invalid reset_config argument, defaulting to none");
1590 jtag_reset_config = RESET_NONE;
1591 return ERROR_INVALID_ARGUMENTS;
1592 }
1593 }
1594
1595 if (argc >= 2)
1596 {
1597 if (strcmp(args[1], "srst_pulls_trst") == 0)
1598 jtag_reset_config |= RESET_SRST_PULLS_TRST;
1599 else if (strcmp(args[1], "trst_pulls_srst") == 0)
1600 jtag_reset_config |= RESET_TRST_PULLS_SRST;
1601 else if (strcmp(args[1], "combined") == 0)
1602 jtag_reset_config |= RESET_SRST_PULLS_TRST | RESET_TRST_PULLS_SRST;
1603 else if (strcmp(args[1], "separate") == 0)
1604 jtag_reset_config &= ~(RESET_SRST_PULLS_TRST | RESET_TRST_PULLS_SRST);
1605 else
1606 {
1607 ERROR("invalid reset_config argument, defaulting to none");
1608 jtag_reset_config = RESET_NONE;
1609 return ERROR_INVALID_ARGUMENTS;
1610 }
1611 }
1612
1613 if (argc >= 3)
1614 {
1615 if (strcmp(args[2], "trst_open_drain") == 0)
1616 jtag_reset_config |= RESET_TRST_OPEN_DRAIN;
1617 else if (strcmp(args[2], "trst_push_pull") == 0)
1618 jtag_reset_config &= ~RESET_TRST_OPEN_DRAIN;
1619 else
1620 {
1621 ERROR("invalid reset_config argument, defaulting to none");
1622 jtag_reset_config = RESET_NONE;
1623 return ERROR_INVALID_ARGUMENTS;
1624 }
1625 }
1626
1627 if (argc >= 4)
1628 {
1629 if (strcmp(args[3], "srst_push_pull") == 0)
1630 jtag_reset_config |= RESET_SRST_PUSH_PULL;
1631 else if (strcmp(args[3], "srst_open_drain") == 0)
1632 jtag_reset_config &= ~RESET_SRST_PUSH_PULL;
1633 else
1634 {
1635 ERROR("invalid reset_config argument, defaulting to none");
1636 jtag_reset_config = RESET_NONE;
1637 return ERROR_INVALID_ARGUMENTS;
1638 }
1639 }
1640
1641 return ERROR_OK;
1642 }
1643
1644 int handle_jtag_nsrst_delay_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1645 {
1646 if (argc < 1)
1647 {
1648 ERROR("jtag_nsrst_delay <ms> command takes one required argument");
1649 exit(-1);
1650 }
1651 else
1652 {
1653 jtag_nsrst_delay = strtoul(args[0], NULL, 0);
1654 }
1655
1656 return ERROR_OK;
1657 }
1658
1659 int handle_jtag_ntrst_delay_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1660 {
1661 if (argc < 1)
1662 {
1663 ERROR("jtag_ntrst_delay <ms> command takes one required argument");
1664 exit(-1);
1665 }
1666 else
1667 {
1668 jtag_ntrst_delay = strtoul(args[0], NULL, 0);
1669 }
1670
1671 return ERROR_OK;
1672 }
1673
1674 int handle_jtag_speed_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1675 {
1676 if (argc == 0)
1677 command_print(cmd_ctx, "jtag_speed: %i", jtag_speed);
1678
1679 if (argc > 0)
1680 {
1681 /* this command can be called during CONFIG,
1682 * in which case jtag isn't initialized */
1683 if (jtag)
1684 jtag->speed(strtoul(args[0], NULL, 0));
1685 else
1686 jtag_speed = strtoul(args[0], NULL, 0);
1687 }
1688
1689 return ERROR_OK;
1690 }
1691
1692 int handle_endstate_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1693 {
1694 enum tap_state state;
1695
1696 if (argc < 1)
1697 {
1698 return ERROR_COMMAND_SYNTAX_ERROR;
1699 }
1700 else
1701 {
1702 for (state = 0; state < 16; state++)
1703 {
1704 if (strcmp(args[0], tap_state_strings[state]) == 0)
1705 {
1706 jtag_add_end_state(state);
1707 jtag_execute_queue();
1708 }
1709 }
1710 }
1711 command_print(cmd_ctx, "current endstate: %s", tap_state_strings[end_state]);
1712
1713 return ERROR_OK;
1714 }
1715
1716 int handle_jtag_reset_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1717 {
1718 int trst = -1;
1719 int srst = -1;
1720 int retval;
1721
1722 if (argc < 2)
1723 {
1724 return ERROR_COMMAND_SYNTAX_ERROR;
1725
1726 }
1727
1728 if (args[0][0] == '1')
1729 trst = 1;
1730 else if (args[0][0] == '0')
1731 trst = 0;
1732 else
1733 {
1734 return ERROR_COMMAND_SYNTAX_ERROR;
1735 }
1736
1737 if (args[1][0] == '1')
1738 srst = 1;
1739 else if (args[1][0] == '0')
1740 srst = 0;
1741 else
1742 {
1743 return ERROR_COMMAND_SYNTAX_ERROR;
1744 }
1745
1746 if (!jtag && jtag_interface_init(cmd_ctx) != ERROR_OK)
1747 return ERROR_JTAG_INIT_FAILED;
1748
1749 if ((retval = jtag_add_reset(trst, srst)) != ERROR_OK)
1750 {
1751 switch (retval)
1752 {
1753 case ERROR_JTAG_RESET_WOULD_ASSERT_TRST:
1754 command_print(cmd_ctx, "requested reset would assert trst\nif this is acceptable, use jtag_reset 1 %c", args[1][0]);
1755 break;
1756 case ERROR_JTAG_RESET_CANT_SRST:
1757 command_print(cmd_ctx, "can't assert srst because the current reset_config doesn't support it");
1758 break;
1759 default:
1760 command_print(cmd_ctx, "unknown error");
1761 }
1762 }
1763 jtag_execute_queue();
1764
1765 return ERROR_OK;
1766 }
1767
1768 int handle_runtest_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1769 {
1770 if (argc < 1)
1771 {
1772 return ERROR_COMMAND_SYNTAX_ERROR;
1773 }
1774
1775 jtag_add_runtest(strtol(args[0], NULL, 0), -1);
1776 jtag_execute_queue();
1777
1778 return ERROR_OK;
1779
1780 }
1781
1782 int handle_statemove_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1783 {
1784 enum tap_state state;
1785
1786 state = -1;
1787 if (argc == 1)
1788 {
1789 for (state = 0; state < 16; state++)
1790 {
1791 if (strcmp(args[0], tap_state_strings[state]) == 0)
1792 {
1793 break;
1794 }
1795 }
1796 }
1797
1798 jtag_add_statemove(state);
1799 jtag_execute_queue();
1800
1801 return ERROR_OK;
1802
1803 }
1804
1805 int handle_irscan_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1806 {
1807 int i;
1808 scan_field_t *fields;
1809
1810 if ((argc < 2) || (argc % 2))
1811 {
1812 return ERROR_COMMAND_SYNTAX_ERROR;
1813 }
1814
1815 fields = malloc(sizeof(scan_field_t) * argc / 2);
1816
1817 for (i = 0; i < argc / 2; i++)
1818 {
1819 int device = strtoul(args[i*2], NULL, 0);
1820 int field_size = jtag_get_device(device)->ir_length;
1821 fields[i].device = device;
1822 fields[i].out_value = malloc(CEIL(field_size, 8));
1823 buf_set_u32(fields[i].out_value, 0, field_size, strtoul(args[i*2+1], NULL, 0));
1824 fields[i].out_mask = NULL;
1825 fields[i].in_value = NULL;
1826 fields[i].in_check_mask = NULL;
1827 fields[i].in_handler = NULL;
1828 fields[i].in_handler_priv = NULL;
1829 }
1830
1831 jtag_add_ir_scan(argc / 2, fields, -1);
1832 jtag_execute_queue();
1833
1834 for (i = 0; i < argc / 2; i++)
1835 free(fields[i].out_value);
1836
1837 free (fields);
1838
1839 return ERROR_OK;
1840 }
1841
1842 int handle_drscan_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1843 {
1844 scan_field_t *fields;
1845 int num_fields = 0;
1846 int field_count = 0;
1847 var_t *var;
1848 int i, j;
1849
1850 if ((argc < 2) || (argc % 2))
1851 {
1852 return ERROR_COMMAND_SYNTAX_ERROR;
1853 }
1854
1855 for (i = 0; i < argc; i+=2)
1856 {
1857 var = get_var_by_namenum(args[i+1]);
1858 if (var)
1859 {
1860 num_fields += var->num_fields;
1861 }
1862 else
1863 {
1864 command_print(cmd_ctx, "variable %s doesn't exist", args[i+1]);
1865 return ERROR_OK;
1866 }
1867 }
1868
1869 fields = malloc(sizeof(scan_field_t) * num_fields);
1870
1871 for (i = 0; i < argc; i+=2)
1872 {
1873 var = get_var_by_namenum(args[i+1]);
1874
1875 for (j = 0; j < var->num_fields; j++)
1876 {
1877 fields[field_count].device = strtol(args[i], NULL, 0);
1878 fields[field_count].num_bits = var->fields[j].num_bits;
1879 fields[field_count].out_value = malloc(CEIL(var->fields[j].num_bits, 8));
1880 buf_set_u32(fields[field_count].out_value, 0, var->fields[j].num_bits, var->fields[j].value);
1881 fields[field_count].out_mask = NULL;
1882 fields[field_count].in_value = fields[field_count].out_value;
1883 fields[field_count].in_check_mask = NULL;
1884 fields[field_count].in_check_value = NULL;
1885 fields[field_count].in_handler = field_le_to_host;
1886 fields[field_count++].in_handler_priv = &(var->fields[j]);
1887 }
1888 }
1889
1890 jtag_add_dr_scan(num_fields, fields, -1);
1891 jtag_execute_queue();
1892
1893 for (i = 0; i < argc / 2; i++)
1894 free(fields[i].out_value);
1895
1896 free(fields);
1897
1898 return ERROR_OK;
1899 }
1900
1901
1902
1903 int MINIDRIVER(interface_jtag_add_shift)(const enum tap_state shift_state, const enum tap_state end_state, int num_bits, u32 value)
1904 {
1905 u8 out_buf[4];
1906 buf_set_u32(out_buf, 0, 32, flip_u32(value, 32));
1907
1908 /* allocate memory for a new list member */
1909 jtag_command_t **last_cmd;
1910 last_cmd = jtag_get_last_command_p();
1911 *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
1912 last_comand_pointer = &((*last_cmd)->next);
1913 (*last_cmd)->next = NULL;
1914 (*last_cmd)->type = JTAG_SCAN;
1915
1916 /* allocate memory for scan command */
1917 (*last_cmd)->cmd.scan = cmd_queue_alloc(sizeof(scan_command_t));
1918 (*last_cmd)->cmd.scan->ir_scan = (shift_state==TAP_SI);
1919 (*last_cmd)->cmd.scan->num_fields = 1;
1920 (*last_cmd)->cmd.scan->fields = cmd_queue_alloc(1 * sizeof(scan_field_t));
1921 (*last_cmd)->cmd.scan->end_state = end_state;
1922
1923 int num_bytes = CEIL(num_bits, 8);
1924 int i=0;
1925 (*last_cmd)->cmd.scan->fields[i].device = 0; /* not used by any drivers */
1926 (*last_cmd)->cmd.scan->fields[i].num_bits = num_bits;
1927 (*last_cmd)->cmd.scan->fields[i].out_value = buf_cpy(out_buf, cmd_queue_alloc(num_bytes), num_bits);
1928 (*last_cmd)->cmd.scan->fields[i].out_mask = NULL;
1929 (*last_cmd)->cmd.scan->fields[i].in_value = NULL;
1930 (*last_cmd)->cmd.scan->fields[i].in_check_value = NULL;
1931 (*last_cmd)->cmd.scan->fields[i].in_check_mask = NULL;
1932 (*last_cmd)->cmd.scan->fields[i].in_handler = NULL;
1933 (*last_cmd)->cmd.scan->fields[i].in_handler_priv = NULL;
1934
1935 return ERROR_OK;
1936 }
1937
1938 int handle_verify_ircapture_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1939 {
1940 if (argc == 1)
1941 {
1942 if (strcmp(args[0], "enable") == 0)
1943 {
1944 jtag_verify_capture_ir = 1;
1945 }
1946 else if (strcmp(args[0], "disable") == 0)
1947 {
1948 jtag_verify_capture_ir = 0;
1949 } else
1950 {
1951 return ERROR_COMMAND_SYNTAX_ERROR;
1952 }
1953 } else if (argc != 0)
1954 {
1955 return ERROR_COMMAND_SYNTAX_ERROR;
1956 }
1957
1958 command_print(cmd_ctx, "verify Capture-IR is %s", (jtag_verify_capture_ir) ? "enabled": "disabled");
1959
1960 return ERROR_OK;
1961 }

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