1 /***************************************************************************
2 * Copyright (C) 2005 by Dominic Rath *
3 * Dominic.Rath@gmx.de *
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. *
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. *
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 ***************************************************************************/
24 #include "replacements.h"
30 #include "interpreter.h"
36 char* tap_state_strings[16] =
39 "sds", "cd", "sd", "e1d", "pd", "e2d", "ud",
41 "sis", "ci", "si", "e1i", "pi", "e2i", "ui"
44 typedef struct cmd_queue_page_s
48 struct cmd_queue_page_s *next;
51 #define CMD_QUEUE_PAGE_SIZE (1024 * 1024)
52 static cmd_queue_page_t *cmd_queue_pages = NULL;
54 /* tap_move[i][j]: tap movement command to go from state i to state j
64 /* TLR RTI SD PD SI PI */
65 {0x7f, 0x00, 0x17, 0x0a, 0x1b, 0x16}, /* TLR */
66 {0x7f, 0x00, 0x25, 0x05, 0x2b, 0x0b}, /* RTI */
67 {0x7f, 0x31, 0x00, 0x01, 0x0f, 0x2f}, /* SD */
68 {0x7f, 0x30, 0x20, 0x17, 0x1e, 0x2f}, /* PD */
69 {0x7f, 0x31, 0x07, 0x17, 0x00, 0x01}, /* SI */
70 {0x7f, 0x30, 0x1c, 0x17, 0x20, 0x2f} /* PI */
73 int tap_move_map[16] = {
74 0, -1, -1, 2, -1, 3, -1, -1,
75 1, -1, -1, 4, -1, 5, -1, -1
78 tap_transition_t tap_transitions[16] =
80 {TAP_TLR, TAP_RTI}, /* TLR */
81 {TAP_SIS, TAP_CD}, /* SDS */
82 {TAP_E1D, TAP_SD}, /* CD */
83 {TAP_E1D, TAP_SD}, /* SD */
84 {TAP_UD, TAP_PD}, /* E1D */
85 {TAP_E2D, TAP_PD}, /* PD */
86 {TAP_UD, TAP_SD}, /* E2D */
87 {TAP_SDS, TAP_RTI}, /* UD */
88 {TAP_SDS, TAP_RTI}, /* RTI */
89 {TAP_TLR, TAP_CI}, /* SIS */
90 {TAP_E1I, TAP_SI}, /* CI */
91 {TAP_E1I, TAP_SI}, /* SI */
92 {TAP_UI, TAP_PI}, /* E1I */
93 {TAP_E2I, TAP_PI}, /* PI */
94 {TAP_UI, TAP_SI}, /* E2I */
95 {TAP_SDS, TAP_RTI} /* UI */
98 char* jtag_event_strings[] =
106 enum tap_state end_state = TAP_TLR;
107 enum tap_state cur_state = TAP_TLR;
111 jtag_command_t *jtag_command_queue = NULL;
112 jtag_command_t **last_comand_pointer = &jtag_command_queue;
113 jtag_device_t *jtag_devices = NULL;
114 int jtag_num_devices = 0;
115 int jtag_ir_scan_size = 0;
116 enum reset_types jtag_reset_config = RESET_NONE;
117 enum tap_state cmd_queue_end_state = TAP_TLR;
118 enum tap_state cmd_queue_cur_state = TAP_TLR;
120 int jtag_verify_capture_ir = 1;
122 /* how long the OpenOCD should wait before attempting JTAG communication after reset lines deasserted (in ms) */
123 int jtag_nsrst_delay = 0; /* default to no nSRST delay */
124 int jtag_ntrst_delay = 0; /* default to no nTRST delay */
126 /* maximum number of JTAG devices expected in the chain
128 #define JTAG_MAX_CHAIN_SIZE 20
130 /* callbacks to inform high-level handlers about JTAG state changes */
131 jtag_event_callback_t *jtag_event_callbacks;
133 /* jtag interfaces (parport, FTDI-USB, TI-USB, ...)
135 #if BUILD_PARPORT == 1
136 extern jtag_interface_t parport_interface;
139 #if BUILD_FT2232_FTD2XX == 1
140 extern jtag_interface_t ft2232_interface;
143 #if BUILD_FT2232_LIBFTDI == 1
144 extern jtag_interface_t ft2232_interface;
147 #if BUILD_AMTJTAGACCEL == 1
148 extern jtag_interface_t amt_jtagaccel_interface;
151 #if BUILD_EP93XX == 1
152 extern jtag_interface_t ep93xx_interface;
155 #if BUILD_AT91RM9200 == 1
156 extern jtag_interface_t at91rm9200_interface;
159 #if BUILD_GW16012 == 1
160 extern jtag_interface_t gw16012_interface;
163 jtag_interface_t *jtag_interfaces[] = {
164 #if BUILD_PARPORT == 1
167 #if BUILD_FT2232_FTD2XX == 1
170 #if BUILD_FT2232_LIBFTDI == 1
173 #if BUILD_AMTJTAGACCEL == 1
174 &amt_jtagaccel_interface,
176 #if BUILD_EP93XX == 1
179 #if BUILD_AT91RM9200 == 1
180 &at91rm9200_interface,
182 #if BUILD_GW16012 == 1
188 jtag_interface_t *jtag = NULL;
191 char* jtag_interface = NULL;
194 /* forward declarations */
195 int jtag_add_ir_scan(int num_fields, scan_field_t *fields, enum tap_state endstate);
196 int jtag_add_dr_scan(int num_fields, scan_field_t *fields, enum tap_state endstate);
197 int jtag_add_plain_ir_scan(int num_fields, scan_field_t *fields, enum tap_state endstate);
198 int jtag_add_plain_dr_scan(int num_fields, scan_field_t *fields, enum tap_state endstate);
199 int jtag_add_statemove(enum tap_state endstate);
200 int jtag_add_pathmove(int num_states, enum tap_state *path);
201 int jtag_add_runtest(int num_cycles, enum tap_state endstate);
202 int jtag_add_reset(int trst, int srst);
203 int jtag_add_end_state(enum tap_state endstate);
204 int jtag_add_sleep(u32 us);
205 int jtag_execute_queue(void);
206 int jtag_cancel_queue(void);
209 int handle_interface_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
210 int handle_jtag_speed_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
211 int handle_jtag_device_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
212 int handle_reset_config_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
213 int handle_jtag_nsrst_delay_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
214 int handle_jtag_ntrst_delay_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
216 int handle_scan_chain_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
218 int handle_endstate_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
219 int handle_jtag_reset_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
220 int handle_runtest_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
221 int handle_statemove_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
222 int handle_irscan_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
223 int handle_drscan_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
225 int handle_verify_ircapture_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
227 int jtag_register_event_callback(int (*callback)(enum jtag_event event, void *priv), void *priv)
229 jtag_event_callback_t **callbacks_p = &jtag_event_callbacks;
231 if (callback == NULL)
233 return ERROR_INVALID_ARGUMENTS;
238 while ((*callbacks_p)->next)
239 callbacks_p = &((*callbacks_p)->next);
240 callbacks_p = &((*callbacks_p)->next);
243 (*callbacks_p) = malloc(sizeof(jtag_event_callback_t));
244 (*callbacks_p)->callback = callback;
245 (*callbacks_p)->priv = priv;
246 (*callbacks_p)->next = NULL;
251 int jtag_unregister_event_callback(int (*callback)(enum jtag_event event, void *priv))
253 jtag_event_callback_t **callbacks_p = &jtag_event_callbacks;
255 if (callback == NULL)
257 return ERROR_INVALID_ARGUMENTS;
262 jtag_event_callback_t **next = &((*callbacks_p)->next);
263 if ((*callbacks_p)->callback == callback)
266 *callbacks_p = *next;
274 int jtag_call_event_callbacks(enum jtag_event event)
276 jtag_event_callback_t *callback = jtag_event_callbacks;
278 DEBUG("jtag event: %s", jtag_event_strings[event]);
282 callback->callback(event, callback->priv);
283 callback = callback->next;
289 /* returns a pointer to the pointer of the last command in queue
290 * this may be a pointer to the root pointer (jtag_command_queue)
291 * or to the next member of the last but one command
293 jtag_command_t** jtag_get_last_command_p(void)
295 /* jtag_command_t *cmd = jtag_command_queue;
301 return &jtag_command_queue;
305 return last_comand_pointer;
308 /* returns a pointer to the n-th device in the scan chain */
309 jtag_device_t* jtag_get_device(int num)
311 jtag_device_t *device = jtag_devices;
318 device = device->next;
325 void* cmd_queue_alloc(size_t size)
327 cmd_queue_page_t **p_page = &cmd_queue_pages;
332 while ((*p_page)->next)
333 p_page = &((*p_page)->next);
334 if (CMD_QUEUE_PAGE_SIZE - (*p_page)->used < size)
335 p_page = &((*p_page)->next);
340 *p_page = malloc(sizeof(cmd_queue_page_t));
342 (*p_page)->address = malloc(CMD_QUEUE_PAGE_SIZE);
343 (*p_page)->next = NULL;
346 offset = (*p_page)->used;
347 (*p_page)->used += size;
349 return ((*p_page)->address) + offset;
352 void cmd_queue_free()
354 cmd_queue_page_t *page = cmd_queue_pages;
358 cmd_queue_page_t *last = page;
364 cmd_queue_pages = NULL;
367 int jtag_add_ir_scan(int num_fields, scan_field_t *fields, enum tap_state state)
369 jtag_command_t **last_cmd;
370 jtag_device_t *device;
373 /* int changed = 0; */
377 WARNING("JTAG command queued, while TRST is low (TAP in reset)");
378 return ERROR_JTAG_TRST_ASSERTED;
382 for (i=0; i<num_fields; i++)
384 device = jtag_get_device(fields[i].device);
387 if (buf_cmp(device->cur_instr, fields[i].out_value, device->ir_length))
392 ERROR("inexistant device specified for ir scan");
393 return ERROR_INVALID_ARGUMENTS;
401 last_cmd = jtag_get_last_command_p();
403 /* allocate memory for a new list member */
404 *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
405 (*last_cmd)->next = NULL;
406 last_comand_pointer = &((*last_cmd)->next);
407 (*last_cmd)->type = JTAG_SCAN;
409 /* allocate memory for ir scan command */
410 (*last_cmd)->cmd.scan = cmd_queue_alloc(sizeof(scan_command_t));
411 (*last_cmd)->cmd.scan->ir_scan = 1;
412 (*last_cmd)->cmd.scan->num_fields = jtag_num_devices; /* one field per device */
413 (*last_cmd)->cmd.scan->fields = cmd_queue_alloc(jtag_num_devices * sizeof(scan_field_t));
414 (*last_cmd)->cmd.scan->end_state = state;
417 cmd_queue_end_state = state;
419 if (cmd_queue_cur_state == TAP_TLR && cmd_queue_end_state != TAP_TLR)
420 jtag_call_event_callbacks(JTAG_TRST_RELEASED);
422 if (cmd_queue_end_state == TAP_TLR)
423 jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
425 cmd_queue_cur_state = cmd_queue_end_state;
427 for (i=0; i < jtag_num_devices; i++)
430 device = jtag_get_device(i);
431 scan_size = device->ir_length;
432 (*last_cmd)->cmd.scan->fields[i].device = i;
433 (*last_cmd)->cmd.scan->fields[i].num_bits = scan_size;
434 (*last_cmd)->cmd.scan->fields[i].in_value = NULL;
435 if (jtag_verify_capture_ir)
437 (*last_cmd)->cmd.scan->fields[i].in_check_value = buf_cpy(device->expected, cmd_queue_alloc(CEIL(scan_size, 8)), scan_size);
438 (*last_cmd)->cmd.scan->fields[i].in_check_mask = buf_cpy(device->expected_mask, cmd_queue_alloc(CEIL(scan_size, 8)), scan_size);
442 (*last_cmd)->cmd.scan->fields[i].in_check_value = NULL;
443 (*last_cmd)->cmd.scan->fields[i].in_check_mask = NULL;
445 (*last_cmd)->cmd.scan->fields[i].in_handler = NULL;
446 (*last_cmd)->cmd.scan->fields[i].in_handler_priv = NULL;
448 /* search the list */
449 for (j=0; j < num_fields; j++)
451 if (i == fields[j].device)
454 (*last_cmd)->cmd.scan->fields[i].out_value = buf_cpy(fields[j].out_value, cmd_queue_alloc(CEIL(scan_size, 8)), scan_size);
455 (*last_cmd)->cmd.scan->fields[i].out_mask = buf_cpy(fields[j].out_mask, cmd_queue_alloc(CEIL(scan_size, 8)), scan_size);
464 /* if a device isn't listed, set it to BYPASS */
465 (*last_cmd)->cmd.scan->fields[i].out_value = buf_set_ones(cmd_queue_alloc(CEIL(scan_size, 8)), scan_size);
466 (*last_cmd)->cmd.scan->fields[i].out_mask = NULL;
471 /* update device information */
472 buf_cpy((*last_cmd)->cmd.scan->fields[i].out_value, jtag_get_device(i)->cur_instr, scan_size);
478 int jtag_add_plain_ir_scan(int num_fields, scan_field_t *fields, enum tap_state state)
480 jtag_command_t **last_cmd;
485 WARNING("JTAG command queued, while TRST is low (TAP in reset)");
486 return ERROR_JTAG_TRST_ASSERTED;
489 last_cmd = jtag_get_last_command_p();
491 /* allocate memory for a new list member */
492 *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
493 (*last_cmd)->next = NULL;
494 last_comand_pointer = &((*last_cmd)->next);
495 (*last_cmd)->type = JTAG_SCAN;
497 /* allocate memory for ir scan command */
498 (*last_cmd)->cmd.scan = cmd_queue_alloc(sizeof(scan_command_t));
499 (*last_cmd)->cmd.scan->ir_scan = 1;
500 (*last_cmd)->cmd.scan->num_fields = num_fields;
501 (*last_cmd)->cmd.scan->fields = cmd_queue_alloc(num_fields * sizeof(scan_field_t));
502 (*last_cmd)->cmd.scan->end_state = state;
505 cmd_queue_end_state = state;
507 if (cmd_queue_cur_state == TAP_TLR && cmd_queue_end_state != TAP_TLR)
508 jtag_call_event_callbacks(JTAG_TRST_RELEASED);
510 if (cmd_queue_end_state == TAP_TLR)
511 jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
513 cmd_queue_cur_state = cmd_queue_end_state;
515 for (i = 0; i < num_fields; i++)
517 int num_bits = fields[i].num_bits;
518 int num_bytes = CEIL(fields[i].num_bits, 8);
519 (*last_cmd)->cmd.scan->fields[i].device = fields[i].device;
520 (*last_cmd)->cmd.scan->fields[i].num_bits = num_bits;
521 (*last_cmd)->cmd.scan->fields[i].out_value = buf_cpy(fields[i].out_value, cmd_queue_alloc(num_bytes), num_bits);
522 (*last_cmd)->cmd.scan->fields[i].out_mask = buf_cpy(fields[i].out_mask, cmd_queue_alloc(num_bytes), num_bits);
523 (*last_cmd)->cmd.scan->fields[i].in_value = fields[i].in_value;
524 (*last_cmd)->cmd.scan->fields[i].in_check_value = buf_cpy(fields[i].in_check_value, cmd_queue_alloc(num_bytes), num_bits);
525 (*last_cmd)->cmd.scan->fields[i].in_check_mask = buf_cpy(fields[i].in_check_mask, cmd_queue_alloc(num_bytes), num_bits);
526 (*last_cmd)->cmd.scan->fields[i].in_handler = NULL;
527 (*last_cmd)->cmd.scan->fields[i].in_handler_priv = NULL;
532 int jtag_add_dr_scan(int num_fields, scan_field_t *fields, enum tap_state state)
535 int bypass_devices = 0;
537 jtag_command_t **last_cmd = jtag_get_last_command_p();
538 jtag_device_t *device = jtag_devices;
543 WARNING("JTAG command queued, while TRST is low (TAP in reset)");
544 return ERROR_JTAG_TRST_ASSERTED;
547 /* count devices in bypass */
552 device = device->next;
555 /* allocate memory for a new list member */
556 *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
557 last_comand_pointer = &((*last_cmd)->next);
558 (*last_cmd)->next = NULL;
559 (*last_cmd)->type = JTAG_SCAN;
561 /* allocate memory for dr scan command */
562 (*last_cmd)->cmd.scan = cmd_queue_alloc(sizeof(scan_command_t));
563 (*last_cmd)->cmd.scan->ir_scan = 0;
564 (*last_cmd)->cmd.scan->num_fields = num_fields + bypass_devices;
565 (*last_cmd)->cmd.scan->fields = cmd_queue_alloc((num_fields + bypass_devices) * sizeof(scan_field_t));
566 (*last_cmd)->cmd.scan->end_state = state;
569 cmd_queue_end_state = state;
571 if (cmd_queue_cur_state == TAP_TLR && cmd_queue_end_state != TAP_TLR)
572 jtag_call_event_callbacks(JTAG_TRST_RELEASED);
574 if (cmd_queue_end_state == TAP_TLR)
575 jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
577 cmd_queue_cur_state = cmd_queue_end_state;
579 for (i=0; i < jtag_num_devices; i++)
582 (*last_cmd)->cmd.scan->fields[field_count].device = i;
584 for (j=0; j < num_fields; j++)
586 if (i == fields[j].device)
589 scan_size = fields[j].num_bits;
590 (*last_cmd)->cmd.scan->fields[field_count].num_bits = scan_size;
591 (*last_cmd)->cmd.scan->fields[field_count].out_value = buf_cpy(fields[j].out_value, cmd_queue_alloc(CEIL(scan_size, 8)), scan_size);
592 (*last_cmd)->cmd.scan->fields[field_count].out_mask = buf_cpy(fields[j].out_mask, cmd_queue_alloc(CEIL(scan_size, 8)), scan_size);
593 (*last_cmd)->cmd.scan->fields[field_count].in_value = fields[j].in_value;
594 (*last_cmd)->cmd.scan->fields[field_count].in_check_value = buf_cpy(fields[j].in_check_value, cmd_queue_alloc(CEIL(scan_size, 8)), scan_size);
595 (*last_cmd)->cmd.scan->fields[field_count].in_check_mask = buf_cpy(fields[j].in_check_mask, cmd_queue_alloc(CEIL(scan_size, 8)), scan_size);
596 (*last_cmd)->cmd.scan->fields[field_count].in_handler = fields[j].in_handler;
597 (*last_cmd)->cmd.scan->fields[field_count++].in_handler_priv = fields[j].in_handler_priv;
602 /* if a device isn't listed, the BYPASS register should be selected */
603 if (!jtag_get_device(i)->bypass)
605 ERROR("BUG: no scan data for a device not in BYPASS");
609 /* program the scan field to 1 bit length, and ignore it's value */
610 (*last_cmd)->cmd.scan->fields[field_count].num_bits = 1;
611 (*last_cmd)->cmd.scan->fields[field_count].out_value = NULL;
612 (*last_cmd)->cmd.scan->fields[field_count].out_mask = NULL;
613 (*last_cmd)->cmd.scan->fields[field_count].in_value = NULL;
614 (*last_cmd)->cmd.scan->fields[field_count].in_check_value = NULL;
615 (*last_cmd)->cmd.scan->fields[field_count].in_check_mask = NULL;
616 (*last_cmd)->cmd.scan->fields[field_count].in_handler = NULL;
617 (*last_cmd)->cmd.scan->fields[field_count++].in_handler_priv = NULL;
621 /* if a device is listed, the BYPASS register must not be selected */
622 if (jtag_get_device(i)->bypass)
624 WARNING("scan data for a device in BYPASS");
631 int jtag_add_plain_dr_scan(int num_fields, scan_field_t *fields, enum tap_state state)
634 jtag_command_t **last_cmd = jtag_get_last_command_p();
638 WARNING("JTAG command queued, while TRST is low (TAP in reset)");
639 return ERROR_JTAG_TRST_ASSERTED;
642 /* allocate memory for a new list member */
643 *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
644 last_comand_pointer = &((*last_cmd)->next);
645 (*last_cmd)->next = NULL;
646 (*last_cmd)->type = JTAG_SCAN;
648 /* allocate memory for scan command */
649 (*last_cmd)->cmd.scan = cmd_queue_alloc(sizeof(scan_command_t));
650 (*last_cmd)->cmd.scan->ir_scan = 0;
651 (*last_cmd)->cmd.scan->num_fields = num_fields;
652 (*last_cmd)->cmd.scan->fields = cmd_queue_alloc(num_fields * sizeof(scan_field_t));
653 (*last_cmd)->cmd.scan->end_state = state;
656 cmd_queue_end_state = state;
658 if (cmd_queue_cur_state == TAP_TLR && cmd_queue_end_state != TAP_TLR)
659 jtag_call_event_callbacks(JTAG_TRST_RELEASED);
661 if (cmd_queue_end_state == TAP_TLR)
662 jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
664 cmd_queue_cur_state = cmd_queue_end_state;
666 for (i = 0; i < num_fields; i++)
668 int num_bits = fields[i].num_bits;
669 int num_bytes = CEIL(fields[i].num_bits, 8);
670 (*last_cmd)->cmd.scan->fields[i].device = fields[i].device;
671 (*last_cmd)->cmd.scan->fields[i].num_bits = num_bits;
672 (*last_cmd)->cmd.scan->fields[i].out_value = buf_cpy(fields[i].out_value, cmd_queue_alloc(num_bytes), num_bits);
673 (*last_cmd)->cmd.scan->fields[i].out_mask = buf_cpy(fields[i].out_mask, cmd_queue_alloc(num_bytes), num_bits);
674 (*last_cmd)->cmd.scan->fields[i].in_value = fields[i].in_value;
675 (*last_cmd)->cmd.scan->fields[i].in_check_value = buf_cpy(fields[i].in_check_value, cmd_queue_alloc(num_bytes), num_bits);
676 (*last_cmd)->cmd.scan->fields[i].in_check_mask = buf_cpy(fields[i].in_check_mask, cmd_queue_alloc(num_bytes), num_bits);
677 (*last_cmd)->cmd.scan->fields[i].in_handler = fields[i].in_handler;
678 (*last_cmd)->cmd.scan->fields[i].in_handler_priv = fields[i].in_handler_priv;
683 int jtag_add_statemove(enum tap_state state)
685 jtag_command_t **last_cmd = jtag_get_last_command_p();
689 WARNING("JTAG command queued, while TRST is low (TAP in reset)");
690 return ERROR_JTAG_TRST_ASSERTED;
693 /* allocate memory for a new list member */
694 *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
695 last_comand_pointer = &((*last_cmd)->next);
696 (*last_cmd)->next = NULL;
697 (*last_cmd)->type = JTAG_STATEMOVE;
699 (*last_cmd)->cmd.statemove = cmd_queue_alloc(sizeof(statemove_command_t));
700 (*last_cmd)->cmd.statemove->end_state = state;
703 cmd_queue_end_state = state;
705 if (cmd_queue_cur_state == TAP_TLR && cmd_queue_end_state != TAP_TLR)
706 jtag_call_event_callbacks(JTAG_TRST_RELEASED);
708 if (cmd_queue_end_state == TAP_TLR)
709 jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
711 cmd_queue_cur_state = cmd_queue_end_state;
716 int jtag_add_pathmove(int num_states, enum tap_state *path)
718 jtag_command_t **last_cmd = jtag_get_last_command_p();
723 WARNING("JTAG command queued, while TRST is low (TAP in reset)");
724 return ERROR_JTAG_TRST_ASSERTED;
727 /* the last state has to be a stable state */
728 if (tap_move_map[path[num_states - 1]] == -1)
730 ERROR("TAP path doesn't finish in a stable state");
731 return ERROR_JTAG_NOT_IMPLEMENTED;
734 if (jtag->support_pathmove)
736 /* allocate memory for a new list member */
737 *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
738 last_comand_pointer = &((*last_cmd)->next);
739 (*last_cmd)->next = NULL;
740 (*last_cmd)->type = JTAG_PATHMOVE;
742 (*last_cmd)->cmd.pathmove = cmd_queue_alloc(sizeof(pathmove_command_t));
743 (*last_cmd)->cmd.pathmove->num_states = num_states;
744 (*last_cmd)->cmd.pathmove->path = cmd_queue_alloc(sizeof(enum tap_state) * num_states);
746 for (i = 0; i < num_states; i++)
747 (*last_cmd)->cmd.pathmove->path[i] = path[i];
751 /* validate the desired path, and see if it fits a default path */
756 for (i = 0; i < num_states; i++)
758 for (j = i; j < num_states; j++)
760 if (tap_move_map[path[j]] != -1)
767 if (begin - end <= 7) /* a default path spans no more than 7 states */
769 jtag_add_statemove(path[end]);
773 ERROR("encountered a TAP path that can't be fulfilled by default paths");
774 return ERROR_JTAG_NOT_IMPLEMENTED;
781 if (cmd_queue_cur_state == TAP_TLR && cmd_queue_end_state != TAP_TLR)
782 jtag_call_event_callbacks(JTAG_TRST_RELEASED);
784 if (cmd_queue_end_state == TAP_TLR)
785 jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
787 cmd_queue_cur_state = path[num_states - 1];
792 int jtag_add_runtest(int num_cycles, enum tap_state state)
794 jtag_command_t **last_cmd = jtag_get_last_command_p();
798 WARNING("JTAG command queued, while TRST is low (TAP in reset)");
799 return ERROR_JTAG_TRST_ASSERTED;
802 /* allocate memory for a new list member */
803 *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
804 (*last_cmd)->next = NULL;
805 last_comand_pointer = &((*last_cmd)->next);
806 (*last_cmd)->type = JTAG_RUNTEST;
808 (*last_cmd)->cmd.runtest = cmd_queue_alloc(sizeof(runtest_command_t));
809 (*last_cmd)->cmd.runtest->num_cycles = num_cycles;
810 (*last_cmd)->cmd.runtest->end_state = state;
813 cmd_queue_end_state = state;
815 if (cmd_queue_cur_state == TAP_TLR && cmd_queue_end_state != TAP_TLR)
816 jtag_call_event_callbacks(JTAG_TRST_RELEASED);
818 if (cmd_queue_end_state == TAP_TLR)
819 jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
821 cmd_queue_cur_state = cmd_queue_end_state;
826 int jtag_add_reset(int req_trst, int req_srst)
828 int trst_with_tms = 0;
830 jtag_command_t **last_cmd = jtag_get_last_command_p();
833 req_trst = jtag_trst;
836 req_srst = jtag_srst;
838 /* Make sure that jtag_reset_config allows the requested reset */
839 /* if SRST pulls TRST, we can't fulfill srst == 1 with trst == 0 */
840 if (((jtag_reset_config & RESET_SRST_PULLS_TRST) && (req_srst == 1)) && (req_trst == 0))
841 return ERROR_JTAG_RESET_WOULD_ASSERT_TRST;
843 /* if TRST pulls SRST, we reset with TAP T-L-R */
844 if (((jtag_reset_config & RESET_TRST_PULLS_SRST) && (req_trst == 1)) && (req_srst == 0))
850 if (req_srst && !(jtag_reset_config & RESET_HAS_SRST))
852 ERROR("requested nSRST assertion, but the current configuration doesn't support this");
853 return ERROR_JTAG_RESET_CANT_SRST;
856 if (req_trst && !(jtag_reset_config & RESET_HAS_TRST))
862 /* allocate memory for a new list member */
863 *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
864 (*last_cmd)->next = NULL;
865 last_comand_pointer = &((*last_cmd)->next);
866 (*last_cmd)->type = JTAG_RESET;
868 (*last_cmd)->cmd.reset = cmd_queue_alloc(sizeof(reset_command_t));
869 (*last_cmd)->cmd.reset->trst = req_trst;
870 (*last_cmd)->cmd.reset->srst = req_srst;
872 jtag_trst = req_trst;
873 jtag_srst = req_srst;
877 jtag_call_event_callbacks(JTAG_SRST_ASSERTED);
881 jtag_call_event_callbacks(JTAG_SRST_RELEASED);
882 if (jtag_nsrst_delay)
883 jtag_add_sleep(jtag_nsrst_delay * 1000);
888 last_cmd = &((*last_cmd)->next);
890 /* allocate memory for a new list member */
891 *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
892 (*last_cmd)->next = NULL;
893 last_comand_pointer = &((*last_cmd)->next);
894 (*last_cmd)->type = JTAG_STATEMOVE;
896 (*last_cmd)->cmd.statemove = cmd_queue_alloc(sizeof(statemove_command_t));
897 (*last_cmd)->cmd.statemove->end_state = TAP_TLR;
899 jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
900 cmd_queue_cur_state = TAP_TLR;
901 cmd_queue_end_state = TAP_TLR;
909 /* we just asserted nTRST, so we're now in Test-Logic-Reset,
910 * and inform possible listeners about this
912 cmd_queue_cur_state = TAP_TLR;
913 jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
917 /* the nTRST line got deasserted, so we're still in Test-Logic-Reset,
918 * but we might want to add a delay to give the TAP time to settle
920 if (jtag_ntrst_delay)
921 jtag_add_sleep(jtag_ntrst_delay * 1000);
928 int jtag_add_end_state(enum tap_state state)
930 jtag_command_t **last_cmd = jtag_get_last_command_p();
932 /* allocate memory for a new list member */
933 *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
934 (*last_cmd)->next = NULL;
935 last_comand_pointer = &((*last_cmd)->next);
936 (*last_cmd)->type = JTAG_END_STATE;
938 (*last_cmd)->cmd.end_state = cmd_queue_alloc(sizeof(end_state_command_t));
939 (*last_cmd)->cmd.end_state->end_state = state;
942 cmd_queue_end_state = state;
947 int jtag_add_sleep(u32 us)
949 jtag_command_t **last_cmd = jtag_get_last_command_p();
951 /* allocate memory for a new list member */
952 *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
953 (*last_cmd)->next = NULL;
954 last_comand_pointer = &((*last_cmd)->next);
955 (*last_cmd)->type = JTAG_SLEEP;
957 (*last_cmd)->cmd.sleep = cmd_queue_alloc(sizeof(sleep_command_t));
958 (*last_cmd)->cmd.sleep->us = us;
963 int jtag_scan_size(scan_command_t *cmd)
968 /* count bits in scan command */
969 for (i=0; i<cmd->num_fields; i++)
971 bit_count += cmd->fields[i].num_bits;
977 int jtag_build_buffer(scan_command_t *cmd, u8 **buffer)
982 bit_count = jtag_scan_size(cmd);
983 *buffer = malloc(CEIL(bit_count, 8));
987 for (i = 0; i < cmd->num_fields; i++)
989 if (cmd->fields[i].out_value)
991 #ifdef _DEBUG_JTAG_IO_
992 char* char_buf = buf_to_str(cmd->fields[i].out_value, (cmd->fields[i].num_bits > 64) ? 64 : cmd->fields[i].num_bits, 16);
994 buf_set_buf(cmd->fields[i].out_value, 0, *buffer, bit_count, cmd->fields[i].num_bits);
995 #ifdef _DEBUG_JTAG_IO_
996 DEBUG("fields[%i].out_value: 0x%s", i, char_buf);
1001 bit_count += cmd->fields[i].num_bits;
1008 int jtag_read_buffer(u8 *buffer, scan_command_t *cmd)
1012 int retval = ERROR_OK;
1014 for (i=0; i < cmd->num_fields; i++)
1016 /* if neither in_value, in_check_value nor in_handler
1017 * are specified we don't have to examine this field
1019 if (cmd->fields[i].in_value || cmd->fields[i].in_check_value || cmd->fields[i].in_handler)
1021 int num_bits = cmd->fields[i].num_bits;
1022 u8 *captured = buf_set_buf(buffer, bit_count, malloc(CEIL(num_bits, 8)), 0, num_bits);
1023 #ifdef _DEBUG_JTAG_IO_
1026 char_buf = buf_to_str(captured, (num_bits > 64) ? 64 : num_bits, 16);
1027 DEBUG("fields[%i].in_value: 0x%s", i, char_buf);
1032 if (cmd->fields[i].in_value)
1034 buf_cpy(captured, cmd->fields[i].in_value, num_bits);
1036 if (cmd->fields[i].in_handler)
1038 if (cmd->fields[i].in_handler(cmd->fields[i].in_value, cmd->fields[i].in_handler_priv) != ERROR_OK)
1040 /* TODO: error reporting */
1041 WARNING("in_handler reported a failed check");
1042 retval = ERROR_JTAG_QUEUE_FAILED;
1047 /* no in_value specified, but a handler takes care of the scanned data */
1048 if (cmd->fields[i].in_handler && (!cmd->fields[i].in_value))
1050 if (cmd->fields[i].in_handler(captured, cmd->fields[i].in_handler_priv) != ERROR_OK)
1052 /* TODO: error reporting */
1053 WARNING("in_handler reported a failed check");
1054 retval = ERROR_JTAG_QUEUE_FAILED;
1059 if (cmd->fields[i].in_check_value)
1061 if ((cmd->fields[i].in_check_mask && buf_cmp_mask(captured, cmd->fields[i].in_check_value, cmd->fields[i].in_check_mask, num_bits))
1062 || (!cmd->fields[i].in_check_mask && buf_cmp(captured, cmd->fields[i].in_check_mask, num_bits)))
1064 char *captured_char = buf_to_str(captured, (num_bits > 64) ? 64 : num_bits, 16);
1065 char *in_check_value_char = buf_to_str(cmd->fields[i].in_check_value, (num_bits > 64) ? 64 : num_bits, 16);
1066 char *in_check_mask_char = buf_to_str(cmd->fields[i].in_check_mask, (num_bits > 64) ? 64 : num_bits, 16);
1067 /* TODO: error reporting */
1068 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);
1069 retval = ERROR_JTAG_QUEUE_FAILED;
1070 free(captured_char);
1071 free(in_check_value_char);
1072 free(in_check_mask_char);
1077 bit_count += cmd->fields[i].num_bits;
1083 enum scan_type jtag_scan_type(scan_command_t *cmd)
1088 for (i=0; i < cmd->num_fields; i++)
1090 if (cmd->fields[i].in_check_value || cmd->fields[i].in_value || cmd->fields[i].in_handler)
1092 if (cmd->fields[i].out_value)
1099 int jtag_execute_queue(void)
1103 retval = jtag->execute_queue();
1107 jtag_command_queue = NULL;
1108 last_comand_pointer = &jtag_command_queue;
1113 int jtag_cancel_queue(void)
1116 jtag_command_queue = NULL;
1117 last_comand_pointer = &jtag_command_queue;
1122 int jtag_reset_callback(enum jtag_event event, void *priv)
1124 jtag_device_t *device = priv;
1128 if (event == JTAG_TRST_ASSERTED)
1130 buf_set_ones(device->cur_instr, device->ir_length);
1137 void jtag_sleep(u32 us)
1142 /* Try to examine chain layout according to IEEE 1149.1 §12
1144 int jtag_examine_chain()
1147 u8 idcode_buffer[JTAG_MAX_CHAIN_SIZE * 4];
1150 int device_count = 0;
1151 u8 zero_check = 0x0;
1152 u8 one_check = 0xff;
1155 field.num_bits = sizeof(idcode_buffer) * 8;
1156 field.out_value = idcode_buffer;
1157 field.out_mask = NULL;
1158 field.in_value = idcode_buffer;
1159 field.in_check_value = NULL;
1160 field.in_check_mask = NULL;
1161 field.in_handler = NULL;
1162 field.in_handler_priv = NULL;
1164 for (i = 0; i < JTAG_MAX_CHAIN_SIZE; i++)
1166 buf_set_u32(idcode_buffer, 0, 32, 0x000000FF);
1169 jtag_add_plain_dr_scan(1, &field, TAP_TLR);
1170 jtag_execute_queue();
1172 for (i = 0; i < JTAG_MAX_CHAIN_SIZE * 4; i++)
1174 zero_check |= idcode_buffer[i];
1175 one_check &= idcode_buffer[i];
1178 /* if there wasn't a single non-zero bit or if all bits were one, the scan isn't valid */
1179 if ((zero_check == 0x00) || (one_check == 0xff))
1181 ERROR("JTAG communication failure, check connection, JTAG interface, target power etc.");
1185 for (bit_count = 0; bit_count < (JTAG_MAX_CHAIN_SIZE * 32) - 31;)
1187 u32 idcode = buf_get_u32(idcode_buffer, bit_count, 32);
1188 if ((idcode & 1) == 0)
1190 /* LSB must not be 0, this indicates a device in bypass */
1201 if (idcode == 0x000000FF)
1203 /* End of chain (invalid manufacturer ID) */
1209 manufacturer = (idcode & 0xffe) >> 1;
1210 part = (idcode & 0xffff000) >> 12;
1211 version = (idcode & 0xf0000000) >> 28;
1213 DEBUG("JTAG device found: 0x%8.8x (Manufacturer: 0x%3.3x, Part: 0x%4.4x, Version: 0x%1.1x",
1214 idcode, manufacturer, part, version);
1220 /* see if number of discovered devices matches configuration */
1221 if (device_count != jtag_num_devices)
1223 ERROR("number of discovered devices in JTAG chain (%i) doesn't match configuration (%i)",
1224 device_count, jtag_num_devices);
1231 int jtag_validate_chain()
1233 jtag_device_t *device = jtag_devices;
1234 int total_ir_length = 0;
1241 total_ir_length += device->ir_length;
1242 device = device->next;
1245 total_ir_length += 2;
1246 ir_test = malloc(CEIL(total_ir_length, 8));
1247 buf_set_ones(ir_test, total_ir_length);
1250 field.num_bits = total_ir_length;
1251 field.out_value = ir_test;
1252 field.out_mask = NULL;
1253 field.in_value = ir_test;
1254 field.in_check_value = NULL;
1255 field.in_check_mask = NULL;
1256 field.in_handler = NULL;
1257 field.in_handler_priv = NULL;
1259 jtag_add_plain_ir_scan(1, &field, TAP_TLR);
1260 jtag_execute_queue();
1262 device = jtag_devices;
1265 if (buf_get_u32(ir_test, chain_pos, 2) != 0x1)
1267 char *cbuf = buf_to_str(ir_test, total_ir_length, 16);
1268 ERROR("Error validating JTAG scan chain, IR mismatch, scan returned 0x%s", cbuf);
1272 chain_pos += device->ir_length;
1273 device = device->next;
1276 if (buf_get_u32(ir_test, chain_pos, 2) != 0x3)
1278 char *cbuf = buf_to_str(ir_test, total_ir_length, 16);
1279 ERROR("Error validating JTAG scan chain, IR mismatch, scan returned 0x%s", cbuf);
1289 int jtag_register_commands(struct command_context_s *cmd_ctx)
1291 register_command(cmd_ctx, NULL, "interface", handle_interface_command,
1292 COMMAND_CONFIG, NULL);
1293 register_command(cmd_ctx, NULL, "jtag_speed", handle_jtag_speed_command,
1294 COMMAND_ANY, "set jtag speed (if supported) <speed>");
1295 register_command(cmd_ctx, NULL, "jtag_device", handle_jtag_device_command,
1296 COMMAND_CONFIG, NULL);
1297 register_command(cmd_ctx, NULL, "reset_config", handle_reset_config_command,
1298 COMMAND_CONFIG, NULL);
1299 register_command(cmd_ctx, NULL, "jtag_nsrst_delay", handle_jtag_nsrst_delay_command,
1300 COMMAND_CONFIG, NULL);
1301 register_command(cmd_ctx, NULL, "jtag_ntrst_delay", handle_jtag_ntrst_delay_command,
1302 COMMAND_CONFIG, NULL);
1304 register_command(cmd_ctx, NULL, "scan_chain", handle_scan_chain_command,
1305 COMMAND_EXEC, "print current scan chain configuration");
1307 register_command(cmd_ctx, NULL, "endstate", handle_endstate_command,
1308 COMMAND_EXEC, "finish JTAG operations in <tap_state>");
1309 register_command(cmd_ctx, NULL, "jtag_reset", handle_jtag_reset_command,
1310 COMMAND_EXEC, "toggle reset lines <trst> <srst>");
1311 register_command(cmd_ctx, NULL, "runtest", handle_runtest_command,
1312 COMMAND_EXEC, "move to Run-Test/Idle, and execute <num_cycles>");
1313 register_command(cmd_ctx, NULL, "statemove", handle_statemove_command,
1314 COMMAND_EXEC, "move to current endstate or [tap_state]");
1315 register_command(cmd_ctx, NULL, "irscan", handle_irscan_command,
1316 COMMAND_EXEC, "execute IR scan <device> <instr> [dev2] [instr2] ...");
1317 register_command(cmd_ctx, NULL, "drscan", handle_drscan_command,
1318 COMMAND_EXEC, "execute DR scan <device> <var> [dev2] [var2] ...");
1320 register_command(cmd_ctx, NULL, "verify_ircapture", handle_verify_ircapture_command,
1321 COMMAND_ANY, "verify value captured during Capture-IR <enable|disable>");
1325 int jtag_init(struct command_context_s *cmd_ctx)
1331 if (jtag_speed == -1)
1334 if (jtag_interface && (jtag_interface[0] != 0))
1335 /* configuration var 'jtag_interface' is set, and not empty */
1336 for (i = 0; jtag_interfaces[i]; i++)
1338 if (strcmp(jtag_interface, jtag_interfaces[i]->name) == 0)
1340 jtag_device_t *device;
1341 device = jtag_devices;
1343 if (jtag_interfaces[i]->init() != ERROR_OK)
1344 return ERROR_JTAG_INIT_FAILED;
1345 jtag = jtag_interfaces[i];
1347 jtag_ir_scan_size = 0;
1348 jtag_num_devices = 0;
1349 while (device != NULL)
1351 jtag_ir_scan_size += device->ir_length;
1353 device = device->next;
1356 jtag_add_statemove(TAP_TLR);
1357 jtag_execute_queue();
1359 jtag_examine_chain();
1361 jtag_validate_chain();
1367 /* no valid interface was found (i.e. the configuration option,
1368 * didn't match one of the compiled-in interfaces
1370 ERROR("No valid jtag interface found (%s)", jtag_interface);
1371 ERROR("compiled-in jtag interfaces:");
1372 for (i = 0; jtag_interfaces[i]; i++)
1374 ERROR("%i: %s", i, jtag_interfaces[i]->name);
1378 return ERROR_JTAG_INVALID_INTERFACE;
1381 int handle_interface_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1385 /* only if the configuration var isn't overwritten from cmdline */
1386 if (!jtag_interface)
1388 if (args[0] && (args[0][0] != 0))
1390 for (i=0; jtag_interfaces[i]; i++)
1392 if (strcmp(args[0], jtag_interfaces[i]->name) == 0)
1394 if (jtag_interfaces[i]->register_commands(cmd_ctx) != ERROR_OK)
1397 jtag_interface = jtag_interfaces[i]->name;
1404 /* remember the requested interface name, so we can complain about it later */
1405 jtag_interface = strdup(args[0]);
1406 DEBUG("'interface' command didn't specify a valid interface");
1412 int handle_jtag_device_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1414 jtag_device_t **last_device_p = &jtag_devices;
1418 while ((*last_device_p)->next)
1419 last_device_p = &((*last_device_p)->next);
1420 last_device_p = &((*last_device_p)->next);
1426 *last_device_p = malloc(sizeof(jtag_device_t));
1427 (*last_device_p)->ir_length = strtoul(args[0], NULL, 0);
1429 (*last_device_p)->expected = malloc((*last_device_p)->ir_length);
1430 buf_set_u32((*last_device_p)->expected, 0, (*last_device_p)->ir_length, strtoul(args[1], NULL, 0));
1431 (*last_device_p)->expected_mask = malloc((*last_device_p)->ir_length);
1432 buf_set_u32((*last_device_p)->expected_mask, 0, (*last_device_p)->ir_length, strtoul(args[2], NULL, 0));
1434 (*last_device_p)->cur_instr = malloc((*last_device_p)->ir_length);
1435 (*last_device_p)->bypass = 1;
1436 buf_set_ones((*last_device_p)->cur_instr, (*last_device_p)->ir_length);
1438 (*last_device_p)->next = NULL;
1440 jtag_register_event_callback(jtag_reset_callback, (*last_device_p));
1447 int handle_scan_chain_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1449 jtag_device_t *device = jtag_devices;
1450 int device_count = 0;
1454 u32 expected, expected_mask, cur_instr;
1455 expected = buf_get_u32(device->expected, 0, device->ir_length);
1456 expected_mask = buf_get_u32(device->expected_mask, 0, device->ir_length);
1457 cur_instr = buf_get_u32(device->cur_instr, 0, device->ir_length);
1458 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);
1459 device = device->next;
1466 int handle_reset_config_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1470 if (strcmp(args[0], "none") == 0)
1471 jtag_reset_config = RESET_NONE;
1472 else if (strcmp(args[0], "trst_only") == 0)
1473 jtag_reset_config = RESET_HAS_TRST;
1474 else if (strcmp(args[0], "srst_only") == 0)
1475 jtag_reset_config = RESET_HAS_SRST;
1476 else if (strcmp(args[0], "trst_and_srst") == 0)
1477 jtag_reset_config = RESET_TRST_AND_SRST;
1480 ERROR("invalid reset_config argument");
1487 if (strcmp(args[1], "srst_pulls_trst") == 0)
1488 jtag_reset_config |= RESET_SRST_PULLS_TRST;
1489 else if (strcmp(args[1], "trst_pulls_srst") == 0)
1490 jtag_reset_config |= RESET_TRST_PULLS_SRST;
1491 else if (strcmp(args[1], "combined") == 0)
1492 jtag_reset_config |= RESET_SRST_PULLS_TRST | RESET_TRST_PULLS_SRST;
1493 else if (strcmp(args[1], "separate") == 0)
1494 jtag_reset_config &= ~(RESET_SRST_PULLS_TRST | RESET_TRST_PULLS_SRST);
1497 ERROR("invalid reset_config argument");
1504 if (strcmp(args[2], "trst_open_drain") == 0)
1505 jtag_reset_config |= RESET_TRST_OPEN_DRAIN;
1506 else if (strcmp(args[2], "trst_push_pull") == 0)
1507 jtag_reset_config &= ~RESET_TRST_OPEN_DRAIN;
1510 ERROR("invalid reset_config argument");
1517 if (strcmp(args[3], "srst_push_pull") == 0)
1518 jtag_reset_config |= RESET_SRST_PUSH_PULL;
1519 else if (strcmp(args[3], "srst_open_drain") == 0)
1520 jtag_reset_config &= ~RESET_SRST_PUSH_PULL;
1523 ERROR("invalid reset_config argument");
1531 int handle_jtag_nsrst_delay_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1535 ERROR("jtag_nsrst_delay <ms> command takes one required argument");
1540 jtag_nsrst_delay = strtoul(args[0], NULL, 0);
1546 int handle_jtag_ntrst_delay_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1550 ERROR("jtag_ntrst_delay <ms> command takes one required argument");
1555 jtag_ntrst_delay = strtoul(args[0], NULL, 0);
1561 int handle_jtag_speed_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1564 command_print(cmd_ctx, "jtag_speed: %i", jtag_speed);
1568 /* this command can be called during CONFIG,
1569 * in which case jtag isn't initialized */
1571 jtag->speed(strtoul(args[0], NULL, 0));
1573 jtag_speed = strtoul(args[0], NULL, 0);
1579 int handle_endstate_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1581 enum tap_state state;
1585 command_print(cmd_ctx, "usage: endstate <tap_state>");
1589 for (state = 0; state < 16; state++)
1591 if (strcmp(args[0], tap_state_strings[state]) == 0)
1593 jtag_add_end_state(state);
1594 jtag_execute_queue();
1601 int handle_jtag_reset_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1605 char *usage = "usage: jtag_reset <trst> <srst>";
1610 command_print(cmd_ctx, usage);
1614 if (args[0][0] == '1')
1616 else if (args[0][0] == '0')
1620 command_print(cmd_ctx, usage);
1624 if (args[1][0] == '1')
1626 else if (args[1][0] == '0')
1630 command_print(cmd_ctx, usage);
1634 if ((retval = jtag_add_reset(trst, srst)) != ERROR_OK)
1638 case ERROR_JTAG_RESET_WOULD_ASSERT_TRST:
1639 command_print(cmd_ctx, "requested reset would assert trst\nif this is acceptable, use jtag_reset 1 %c", args[1][0]);
1641 case ERROR_JTAG_RESET_CANT_SRST:
1642 command_print(cmd_ctx, "can't assert srst because the current reset_config doesn't support it");
1645 command_print(cmd_ctx, "unknown error");
1648 jtag_execute_queue();
1653 int handle_runtest_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1657 command_print(cmd_ctx, "usage: runtest <num_cycles>");
1661 jtag_add_runtest(strtol(args[0], NULL, 0), -1);
1662 jtag_execute_queue();
1668 int handle_statemove_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1670 enum tap_state state;
1675 for (state = 0; state < 16; state++)
1677 if (strcmp(args[0], tap_state_strings[state]) == 0)
1684 jtag_add_statemove(state);
1685 jtag_execute_queue();
1691 int handle_irscan_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1694 scan_field_t *fields;
1696 if ((argc < 2) || (argc % 2))
1698 command_print(cmd_ctx, "usage: irscan <device> <instr> [dev2] [instr2] ...");
1702 fields = malloc(sizeof(scan_field_t) * argc / 2);
1704 for (i = 0; i < argc / 2; i++)
1706 int device = strtoul(args[i*2], NULL, 0);
1707 int field_size = jtag_get_device(device)->ir_length;
1708 fields[i].device = device;
1709 fields[i].out_value = malloc(CEIL(field_size, 8));
1710 buf_set_u32(fields[i].out_value, 0, field_size, strtoul(args[i*2+1], NULL, 0));
1711 fields[i].out_mask = NULL;
1712 fields[i].in_value = NULL;
1713 fields[i].in_check_mask = NULL;
1714 fields[i].in_handler = NULL;
1715 fields[i].in_handler_priv = NULL;
1718 jtag_add_ir_scan(argc / 2, fields, -1);
1719 jtag_execute_queue();
1721 for (i = 0; i < argc / 2; i++)
1722 free(fields[i].out_value);
1729 int handle_drscan_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1731 scan_field_t *fields;
1733 int field_count = 0;
1737 if ((argc < 2) || (argc % 2))
1739 command_print(cmd_ctx, "usage: drscan <device> <var> [dev2] [var2]");
1743 for (i = 0; i < argc; i+=2)
1745 var = get_var_by_namenum(args[i+1]);
1748 num_fields += var->num_fields;
1752 command_print(cmd_ctx, "variable %s doesn't exist", args[i+1]);
1757 fields = malloc(sizeof(scan_field_t) * num_fields);
1759 for (i = 0; i < argc; i+=2)
1761 var = get_var_by_namenum(args[i+1]);
1763 for (j = 0; j < var->num_fields; j++)
1765 fields[field_count].device = strtol(args[i], NULL, 0);
1766 fields[field_count].num_bits = var->fields[j].num_bits;
1767 fields[field_count].out_value = malloc(CEIL(var->fields[j].num_bits, 8));
1768 buf_set_u32(fields[field_count].out_value, 0, var->fields[j].num_bits, var->fields[j].value);
1769 fields[field_count].out_mask = NULL;
1770 fields[field_count].in_value = fields[field_count].out_value;
1771 fields[field_count].in_check_mask = NULL;
1772 fields[field_count].in_check_value = NULL;
1773 fields[field_count].in_handler = field_le_to_host;
1774 fields[field_count++].in_handler_priv = &(var->fields[j]);
1778 jtag_add_dr_scan(num_fields, fields, -1);
1779 jtag_execute_queue();
1781 for (i = 0; i < argc / 2; i++)
1782 free(fields[i].out_value);
1789 int handle_verify_ircapture_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1793 command_print(cmd_ctx, "verify Capture-IR is %s", (jtag_verify_capture_ir) ? "enabled": "disabled");
1797 if (strcmp(args[0], "enable") == 0)
1799 jtag_verify_capture_ir = 1;
1801 else if (strcmp(args[0], "disable") == 0)
1803 jtag_verify_capture_ir = 0;