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
62 * SD->SD and SI->SI have to be caught in interface specific code
66 /* TLR RTI SD PD SI PI */
67 {0x7f, 0x00, 0x17, 0x0a, 0x1b, 0x16}, /* TLR */
68 {0x7f, 0x00, 0x25, 0x05, 0x2b, 0x0b}, /* RTI */
69 {0x7f, 0x31, 0x00, 0x01, 0x0f, 0x2f}, /* SD */
70 {0x7f, 0x30, 0x20, 0x17, 0x1e, 0x2f}, /* PD */
71 {0x7f, 0x31, 0x07, 0x17, 0x00, 0x01}, /* SI */
72 {0x7f, 0x30, 0x1c, 0x17, 0x20, 0x2f} /* PI */
75 int tap_move_map[16] = {
76 0, -1, -1, 2, -1, 3, -1, -1,
77 1, -1, -1, 4, -1, 5, -1, -1
80 tap_transition_t tap_transitions[16] =
82 {TAP_TLR, TAP_RTI}, /* TLR */
83 {TAP_SIS, TAP_CD}, /* SDS */
84 {TAP_E1D, TAP_SD}, /* CD */
85 {TAP_E1D, TAP_SD}, /* SD */
86 {TAP_UD, TAP_PD}, /* E1D */
87 {TAP_E2D, TAP_PD}, /* PD */
88 {TAP_UD, TAP_SD}, /* E2D */
89 {TAP_SDS, TAP_RTI}, /* UD */
90 {TAP_SDS, TAP_RTI}, /* RTI */
91 {TAP_TLR, TAP_CI}, /* SIS */
92 {TAP_E1I, TAP_SI}, /* CI */
93 {TAP_E1I, TAP_SI}, /* SI */
94 {TAP_UI, TAP_PI}, /* E1I */
95 {TAP_E2I, TAP_PI}, /* PI */
96 {TAP_UI, TAP_SI}, /* E2I */
97 {TAP_SDS, TAP_RTI} /* UI */
100 char* jtag_event_strings[] =
108 enum tap_state end_state = TAP_TLR;
109 enum tap_state cur_state = TAP_TLR;
113 jtag_command_t *jtag_command_queue = NULL;
114 jtag_command_t **last_comand_pointer = &jtag_command_queue;
115 jtag_device_t *jtag_devices = NULL;
116 int jtag_num_devices = 0;
117 int jtag_ir_scan_size = 0;
118 enum reset_types jtag_reset_config = RESET_NONE;
119 enum tap_state cmd_queue_end_state = TAP_TLR;
120 enum tap_state cmd_queue_cur_state = TAP_TLR;
122 int jtag_verify_capture_ir = 1;
124 /* how long the OpenOCD should wait before attempting JTAG communication after reset lines deasserted (in ms) */
125 int jtag_nsrst_delay = 0; /* default to no nSRST delay */
126 int jtag_ntrst_delay = 0; /* default to no nTRST delay */
128 /* maximum number of JTAG devices expected in the chain
130 #define JTAG_MAX_CHAIN_SIZE 20
132 /* callbacks to inform high-level handlers about JTAG state changes */
133 jtag_event_callback_t *jtag_event_callbacks;
135 /* jtag interfaces (parport, FTDI-USB, TI-USB, ...)
137 #if BUILD_PARPORT == 1
138 extern jtag_interface_t parport_interface;
141 #if BUILD_FT2232_FTD2XX == 1
142 extern jtag_interface_t ft2232_interface;
145 #if BUILD_FT2232_LIBFTDI == 1
146 extern jtag_interface_t ft2232_interface;
149 #if BUILD_AMTJTAGACCEL == 1
150 extern jtag_interface_t amt_jtagaccel_interface;
153 #if BUILD_EP93XX == 1
154 extern jtag_interface_t ep93xx_interface;
157 #if BUILD_AT91RM9200 == 1
158 extern jtag_interface_t at91rm9200_interface;
161 #if BUILD_GW16012 == 1
162 extern jtag_interface_t gw16012_interface;
165 #if BUILD_PRESTO_LIBFTDI == 1 || BUILD_PRESTO_FTD2XX == 1
166 extern jtag_interface_t presto_interface;
169 #if BUILD_USBPROG == 1
170 extern jtag_interface_t usbprog_interface;
173 jtag_interface_t *jtag_interfaces[] = {
174 #if BUILD_PARPORT == 1
177 #if BUILD_FT2232_FTD2XX == 1
180 #if BUILD_FT2232_LIBFTDI == 1
183 #if BUILD_AMTJTAGACCEL == 1
184 &amt_jtagaccel_interface,
186 #if BUILD_EP93XX == 1
189 #if BUILD_AT91RM9200 == 1
190 &at91rm9200_interface,
192 #if BUILD_GW16012 == 1
195 #if BUILD_PRESTO_LIBFTDI == 1 || BUILD_PRESTO_FTD2XX == 1
198 #if BUILD_USBPROG == 1
204 jtag_interface_t *jtag = NULL;
207 char* jtag_interface = NULL;
211 /* forward declarations */
212 int jtag_add_statemove(enum tap_state endstate);
213 int jtag_add_pathmove(int num_states, enum tap_state *path);
214 int jtag_add_runtest(int num_cycles, enum tap_state endstate);
215 int jtag_add_reset(int trst, int srst);
216 int jtag_add_end_state(enum tap_state endstate);
217 int jtag_add_sleep(u32 us);
218 int jtag_execute_queue(void);
219 int jtag_cancel_queue(void);
222 int handle_interface_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
223 int handle_jtag_speed_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
224 int handle_jtag_device_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
225 int handle_reset_config_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
226 int handle_jtag_nsrst_delay_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
227 int handle_jtag_ntrst_delay_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
229 int handle_scan_chain_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
231 int handle_endstate_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
232 int handle_jtag_reset_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
233 int handle_runtest_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
234 int handle_statemove_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
235 int handle_irscan_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
236 int handle_drscan_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
238 int handle_verify_ircapture_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
240 int jtag_register_event_callback(int (*callback)(enum jtag_event event, void *priv), void *priv)
242 jtag_event_callback_t **callbacks_p = &jtag_event_callbacks;
244 if (callback == NULL)
246 return ERROR_INVALID_ARGUMENTS;
251 while ((*callbacks_p)->next)
252 callbacks_p = &((*callbacks_p)->next);
253 callbacks_p = &((*callbacks_p)->next);
256 (*callbacks_p) = malloc(sizeof(jtag_event_callback_t));
257 (*callbacks_p)->callback = callback;
258 (*callbacks_p)->priv = priv;
259 (*callbacks_p)->next = NULL;
264 int jtag_unregister_event_callback(int (*callback)(enum jtag_event event, void *priv))
266 jtag_event_callback_t **callbacks_p = &jtag_event_callbacks;
268 if (callback == NULL)
270 return ERROR_INVALID_ARGUMENTS;
275 jtag_event_callback_t **next = &((*callbacks_p)->next);
276 if ((*callbacks_p)->callback == callback)
279 *callbacks_p = *next;
287 int jtag_call_event_callbacks(enum jtag_event event)
289 jtag_event_callback_t *callback = jtag_event_callbacks;
291 DEBUG("jtag event: %s", jtag_event_strings[event]);
295 callback->callback(event, callback->priv);
296 callback = callback->next;
302 /* returns a pointer to the pointer of the last command in queue
303 * this may be a pointer to the root pointer (jtag_command_queue)
304 * or to the next member of the last but one command
306 jtag_command_t** jtag_get_last_command_p(void)
308 /* jtag_command_t *cmd = jtag_command_queue;
314 return &jtag_command_queue;
318 return last_comand_pointer;
321 /* returns a pointer to the n-th device in the scan chain */
322 jtag_device_t* jtag_get_device(int num)
324 jtag_device_t *device = jtag_devices;
331 device = device->next;
338 void* cmd_queue_alloc(size_t size)
340 cmd_queue_page_t **p_page = &cmd_queue_pages;
345 while ((*p_page)->next)
346 p_page = &((*p_page)->next);
347 if (CMD_QUEUE_PAGE_SIZE - (*p_page)->used < size)
348 p_page = &((*p_page)->next);
353 *p_page = malloc(sizeof(cmd_queue_page_t));
355 (*p_page)->address = malloc(CMD_QUEUE_PAGE_SIZE);
356 (*p_page)->next = NULL;
359 offset = (*p_page)->used;
360 (*p_page)->used += size;
362 u8 *t=(u8 *)((*p_page)->address);
366 void cmd_queue_free()
368 cmd_queue_page_t *page = cmd_queue_pages;
372 cmd_queue_page_t *last = page;
378 cmd_queue_pages = NULL;
381 int jtag_add_ir_scan(int num_fields, scan_field_t *fields, enum tap_state state, void *dummy_anachronism)
383 jtag_command_t **last_cmd;
384 jtag_device_t *device;
390 WARNING("JTAG command queued, while TRST is low (TAP in reset)");
391 return ERROR_JTAG_TRST_ASSERTED;
394 last_cmd = jtag_get_last_command_p();
396 /* allocate memory for a new list member */
397 *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
398 (*last_cmd)->next = NULL;
399 last_comand_pointer = &((*last_cmd)->next);
400 (*last_cmd)->type = JTAG_SCAN;
402 /* allocate memory for ir scan command */
403 (*last_cmd)->cmd.scan = cmd_queue_alloc(sizeof(scan_command_t));
404 (*last_cmd)->cmd.scan->ir_scan = 1;
405 (*last_cmd)->cmd.scan->num_fields = jtag_num_devices; /* one field per device */
406 (*last_cmd)->cmd.scan->fields = cmd_queue_alloc(jtag_num_devices * sizeof(scan_field_t));
407 (*last_cmd)->cmd.scan->end_state = state;
410 cmd_queue_end_state = state;
412 if (cmd_queue_cur_state == TAP_TLR && cmd_queue_end_state != TAP_TLR)
413 jtag_call_event_callbacks(JTAG_TRST_RELEASED);
415 if (cmd_queue_end_state == TAP_TLR)
416 jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
418 cmd_queue_cur_state = cmd_queue_end_state;
420 for (i = 0; i < jtag_num_devices; i++)
423 device = jtag_get_device(i);
424 scan_size = device->ir_length;
425 (*last_cmd)->cmd.scan->fields[i].device = i;
426 (*last_cmd)->cmd.scan->fields[i].num_bits = scan_size;
427 (*last_cmd)->cmd.scan->fields[i].in_value = NULL;
428 if ((jtag_verify_capture_ir)&&(fields[i].in_handler==NULL))
430 jtag_set_check_value((*last_cmd)->cmd.scan->fields+i, device->expected, device->expected_mask, NULL);
431 } else if (jtag_verify_capture_ir)
433 (*last_cmd)->cmd.scan->fields[i].in_handler = fields[i].in_handler;
434 (*last_cmd)->cmd.scan->fields[i].in_handler_priv = fields[i].in_handler_priv;
435 (*last_cmd)->cmd.scan->fields[i].in_check_value = device->expected;
436 (*last_cmd)->cmd.scan->fields[i].in_check_mask = device->expected_mask;
439 /* search the list */
440 for (j = 0; j < num_fields; j++)
442 if (i == fields[j].device)
445 (*last_cmd)->cmd.scan->fields[i].out_value = buf_cpy(fields[j].out_value, cmd_queue_alloc(CEIL(scan_size, 8)), scan_size);
446 (*last_cmd)->cmd.scan->fields[i].out_mask = buf_cpy(fields[j].out_mask, cmd_queue_alloc(CEIL(scan_size, 8)), scan_size);
455 /* if a device isn't listed, set it to BYPASS */
456 (*last_cmd)->cmd.scan->fields[i].out_value = buf_set_ones(cmd_queue_alloc(CEIL(scan_size, 8)), scan_size);
457 (*last_cmd)->cmd.scan->fields[i].out_mask = NULL;
462 /* update device information */
463 buf_cpy((*last_cmd)->cmd.scan->fields[i].out_value, jtag_get_device(i)->cur_instr, scan_size);
469 int jtag_add_plain_ir_scan(int num_fields, scan_field_t *fields, enum tap_state state, void *dummy_anachronism)
471 jtag_command_t **last_cmd;
476 WARNING("JTAG command queued, while TRST is low (TAP in reset)");
477 return ERROR_JTAG_TRST_ASSERTED;
480 last_cmd = jtag_get_last_command_p();
482 /* allocate memory for a new list member */
483 *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
484 (*last_cmd)->next = NULL;
485 last_comand_pointer = &((*last_cmd)->next);
486 (*last_cmd)->type = JTAG_SCAN;
488 /* allocate memory for ir scan command */
489 (*last_cmd)->cmd.scan = cmd_queue_alloc(sizeof(scan_command_t));
490 (*last_cmd)->cmd.scan->ir_scan = 1;
491 (*last_cmd)->cmd.scan->num_fields = num_fields;
492 (*last_cmd)->cmd.scan->fields = cmd_queue_alloc(num_fields * sizeof(scan_field_t));
493 (*last_cmd)->cmd.scan->end_state = state;
496 cmd_queue_end_state = state;
498 if (cmd_queue_cur_state == TAP_TLR && cmd_queue_end_state != TAP_TLR)
499 jtag_call_event_callbacks(JTAG_TRST_RELEASED);
501 if (cmd_queue_end_state == TAP_TLR)
502 jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
504 cmd_queue_cur_state = cmd_queue_end_state;
506 for (i = 0; i < num_fields; i++)
508 int num_bits = fields[i].num_bits;
509 int num_bytes = CEIL(fields[i].num_bits, 8);
510 (*last_cmd)->cmd.scan->fields[i].device = fields[i].device;
511 (*last_cmd)->cmd.scan->fields[i].num_bits = num_bits;
512 (*last_cmd)->cmd.scan->fields[i].out_value = buf_cpy(fields[i].out_value, cmd_queue_alloc(num_bytes), num_bits);
513 (*last_cmd)->cmd.scan->fields[i].out_mask = buf_cpy(fields[i].out_mask, cmd_queue_alloc(num_bytes), num_bits);
514 (*last_cmd)->cmd.scan->fields[i].in_value = fields[i].in_value;
515 (*last_cmd)->cmd.scan->fields[i].in_check_value = fields[i].in_check_value;
516 (*last_cmd)->cmd.scan->fields[i].in_check_mask = fields[i].in_check_mask;
517 (*last_cmd)->cmd.scan->fields[i].in_handler = NULL;
518 (*last_cmd)->cmd.scan->fields[i].in_handler_priv = NULL;
523 int jtag_add_dr_scan(int num_fields, scan_field_t *fields, enum tap_state state, void *dummy_anachronism)
526 int bypass_devices = 0;
528 jtag_command_t **last_cmd = jtag_get_last_command_p();
529 jtag_device_t *device = jtag_devices;
534 WARNING("JTAG command queued, while TRST is low (TAP in reset)");
535 return ERROR_JTAG_TRST_ASSERTED;
538 /* count devices in bypass */
543 device = device->next;
546 /* allocate memory for a new list member */
547 *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
548 last_comand_pointer = &((*last_cmd)->next);
549 (*last_cmd)->next = NULL;
550 (*last_cmd)->type = JTAG_SCAN;
552 /* allocate memory for dr scan command */
553 (*last_cmd)->cmd.scan = cmd_queue_alloc(sizeof(scan_command_t));
554 (*last_cmd)->cmd.scan->ir_scan = 0;
555 (*last_cmd)->cmd.scan->num_fields = num_fields + bypass_devices;
556 (*last_cmd)->cmd.scan->fields = cmd_queue_alloc((num_fields + bypass_devices) * sizeof(scan_field_t));
557 (*last_cmd)->cmd.scan->end_state = state;
560 cmd_queue_end_state = state;
562 if (cmd_queue_cur_state == TAP_TLR && cmd_queue_end_state != TAP_TLR)
563 jtag_call_event_callbacks(JTAG_TRST_RELEASED);
565 if (cmd_queue_end_state == TAP_TLR)
566 jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
568 cmd_queue_cur_state = cmd_queue_end_state;
570 for (i = 0; i < jtag_num_devices; i++)
573 (*last_cmd)->cmd.scan->fields[field_count].device = i;
575 for (j = 0; j < num_fields; j++)
577 if (i == fields[j].device)
580 scan_size = fields[j].num_bits;
581 (*last_cmd)->cmd.scan->fields[field_count].num_bits = scan_size;
582 (*last_cmd)->cmd.scan->fields[field_count].out_value = buf_cpy(fields[j].out_value, cmd_queue_alloc(CEIL(scan_size, 8)), scan_size);
583 (*last_cmd)->cmd.scan->fields[field_count].out_mask = buf_cpy(fields[j].out_mask, cmd_queue_alloc(CEIL(scan_size, 8)), scan_size);
584 (*last_cmd)->cmd.scan->fields[field_count].in_value = fields[j].in_value;
585 (*last_cmd)->cmd.scan->fields[field_count].in_check_value = fields[j].in_check_value;
586 (*last_cmd)->cmd.scan->fields[field_count].in_check_mask = fields[j].in_check_mask;
587 (*last_cmd)->cmd.scan->fields[field_count].in_handler = fields[j].in_handler;
588 (*last_cmd)->cmd.scan->fields[field_count++].in_handler_priv = fields[j].in_handler_priv;
593 /* if a device isn't listed, the BYPASS register should be selected */
594 if (!jtag_get_device(i)->bypass)
596 ERROR("BUG: no scan data for a device not in BYPASS");
600 /* program the scan field to 1 bit length, and ignore it's value */
601 (*last_cmd)->cmd.scan->fields[field_count].num_bits = 1;
602 (*last_cmd)->cmd.scan->fields[field_count].out_value = NULL;
603 (*last_cmd)->cmd.scan->fields[field_count].out_mask = NULL;
604 (*last_cmd)->cmd.scan->fields[field_count].in_value = NULL;
605 (*last_cmd)->cmd.scan->fields[field_count].in_check_value = NULL;
606 (*last_cmd)->cmd.scan->fields[field_count].in_check_mask = NULL;
607 (*last_cmd)->cmd.scan->fields[field_count].in_handler = NULL;
608 (*last_cmd)->cmd.scan->fields[field_count++].in_handler_priv = NULL;
612 /* if a device is listed, the BYPASS register must not be selected */
613 if (jtag_get_device(i)->bypass)
615 WARNING("scan data for a device in BYPASS");
622 int jtag_add_plain_dr_scan(int num_fields, scan_field_t *fields, enum tap_state state, void *dummy_anachronism)
625 jtag_command_t **last_cmd = jtag_get_last_command_p();
629 WARNING("JTAG command queued, while TRST is low (TAP in reset)");
630 return ERROR_JTAG_TRST_ASSERTED;
633 /* allocate memory for a new list member */
634 *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
635 last_comand_pointer = &((*last_cmd)->next);
636 (*last_cmd)->next = NULL;
637 (*last_cmd)->type = JTAG_SCAN;
639 /* allocate memory for scan command */
640 (*last_cmd)->cmd.scan = cmd_queue_alloc(sizeof(scan_command_t));
641 (*last_cmd)->cmd.scan->ir_scan = 0;
642 (*last_cmd)->cmd.scan->num_fields = num_fields;
643 (*last_cmd)->cmd.scan->fields = cmd_queue_alloc(num_fields * sizeof(scan_field_t));
644 (*last_cmd)->cmd.scan->end_state = state;
647 cmd_queue_end_state = state;
649 if (cmd_queue_cur_state == TAP_TLR && cmd_queue_end_state != TAP_TLR)
650 jtag_call_event_callbacks(JTAG_TRST_RELEASED);
652 if (cmd_queue_end_state == TAP_TLR)
653 jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
655 cmd_queue_cur_state = cmd_queue_end_state;
657 for (i = 0; i < num_fields; i++)
659 int num_bits = fields[i].num_bits;
660 int num_bytes = CEIL(fields[i].num_bits, 8);
661 (*last_cmd)->cmd.scan->fields[i].device = fields[i].device;
662 (*last_cmd)->cmd.scan->fields[i].num_bits = num_bits;
663 (*last_cmd)->cmd.scan->fields[i].out_value = buf_cpy(fields[i].out_value, cmd_queue_alloc(num_bytes), num_bits);
664 (*last_cmd)->cmd.scan->fields[i].out_mask = buf_cpy(fields[i].out_mask, cmd_queue_alloc(num_bytes), num_bits);
665 (*last_cmd)->cmd.scan->fields[i].in_value = fields[i].in_value;
666 (*last_cmd)->cmd.scan->fields[i].in_check_value = fields[i].in_check_value;
667 (*last_cmd)->cmd.scan->fields[i].in_check_mask = fields[i].in_check_mask;
668 (*last_cmd)->cmd.scan->fields[i].in_handler = fields[i].in_handler;
669 (*last_cmd)->cmd.scan->fields[i].in_handler_priv = fields[i].in_handler_priv;
674 int jtag_add_statemove(enum tap_state state)
676 jtag_command_t **last_cmd = jtag_get_last_command_p();
680 WARNING("JTAG command queued, while TRST is low (TAP in reset)");
681 return ERROR_JTAG_TRST_ASSERTED;
684 /* allocate memory for a new list member */
685 *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
686 last_comand_pointer = &((*last_cmd)->next);
687 (*last_cmd)->next = NULL;
688 (*last_cmd)->type = JTAG_STATEMOVE;
690 (*last_cmd)->cmd.statemove = cmd_queue_alloc(sizeof(statemove_command_t));
691 (*last_cmd)->cmd.statemove->end_state = state;
694 cmd_queue_end_state = state;
696 if (cmd_queue_cur_state == TAP_TLR && cmd_queue_end_state != TAP_TLR)
697 jtag_call_event_callbacks(JTAG_TRST_RELEASED);
699 if (cmd_queue_end_state == TAP_TLR)
700 jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
702 cmd_queue_cur_state = cmd_queue_end_state;
707 int jtag_add_pathmove(int num_states, enum tap_state *path)
709 jtag_command_t **last_cmd = jtag_get_last_command_p();
714 WARNING("JTAG command queued, while TRST is low (TAP in reset)");
715 return ERROR_JTAG_TRST_ASSERTED;
718 /* the last state has to be a stable state */
719 if (tap_move_map[path[num_states - 1]] == -1)
721 ERROR("TAP path doesn't finish in a stable state");
722 return ERROR_JTAG_NOT_IMPLEMENTED;
725 if (jtag->support_pathmove)
727 /* allocate memory for a new list member */
728 *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
729 last_comand_pointer = &((*last_cmd)->next);
730 (*last_cmd)->next = NULL;
731 (*last_cmd)->type = JTAG_PATHMOVE;
733 (*last_cmd)->cmd.pathmove = cmd_queue_alloc(sizeof(pathmove_command_t));
734 (*last_cmd)->cmd.pathmove->num_states = num_states;
735 (*last_cmd)->cmd.pathmove->path = cmd_queue_alloc(sizeof(enum tap_state) * num_states);
737 for (i = 0; i < num_states; i++)
738 (*last_cmd)->cmd.pathmove->path[i] = path[i];
742 /* validate the desired path, and see if it fits a default path */
747 for (i = 0; i < num_states; i++)
749 for (j = i; j < num_states; j++)
751 if (tap_move_map[path[j]] != -1)
758 if (begin - end <= 7) /* a default path spans no more than 7 states */
760 jtag_add_statemove(path[end]);
764 ERROR("encountered a TAP path that can't be fulfilled by default paths");
765 return ERROR_JTAG_NOT_IMPLEMENTED;
772 if (cmd_queue_cur_state == TAP_TLR && cmd_queue_end_state != TAP_TLR)
773 jtag_call_event_callbacks(JTAG_TRST_RELEASED);
775 if (cmd_queue_end_state == TAP_TLR)
776 jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
778 cmd_queue_cur_state = path[num_states - 1];
783 int jtag_add_runtest(int num_cycles, enum tap_state state)
785 jtag_command_t **last_cmd = jtag_get_last_command_p();
789 WARNING("JTAG command queued, while TRST is low (TAP in reset)");
790 return ERROR_JTAG_TRST_ASSERTED;
793 /* allocate memory for a new list member */
794 *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
795 (*last_cmd)->next = NULL;
796 last_comand_pointer = &((*last_cmd)->next);
797 (*last_cmd)->type = JTAG_RUNTEST;
799 (*last_cmd)->cmd.runtest = cmd_queue_alloc(sizeof(runtest_command_t));
800 (*last_cmd)->cmd.runtest->num_cycles = num_cycles;
801 (*last_cmd)->cmd.runtest->end_state = state;
804 cmd_queue_end_state = state;
806 if (cmd_queue_cur_state == TAP_TLR && cmd_queue_end_state != TAP_TLR)
807 jtag_call_event_callbacks(JTAG_TRST_RELEASED);
809 if (cmd_queue_end_state == TAP_TLR)
810 jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
812 cmd_queue_cur_state = cmd_queue_end_state;
817 int jtag_add_reset(int req_trst, int req_srst)
819 int trst_with_tms = 0;
821 jtag_command_t **last_cmd = jtag_get_last_command_p();
824 req_trst = jtag_trst;
827 req_srst = jtag_srst;
829 /* Make sure that jtag_reset_config allows the requested reset */
830 /* if SRST pulls TRST, we can't fulfill srst == 1 with trst == 0 */
831 if (((jtag_reset_config & RESET_SRST_PULLS_TRST) && (req_srst == 1)) && (req_trst == 0))
832 return ERROR_JTAG_RESET_WOULD_ASSERT_TRST;
834 /* if TRST pulls SRST, we reset with TAP T-L-R */
835 if (((jtag_reset_config & RESET_TRST_PULLS_SRST) && (req_trst == 1)) && (req_srst == 0))
841 if (req_srst && !(jtag_reset_config & RESET_HAS_SRST))
843 ERROR("requested nSRST assertion, but the current configuration doesn't support this");
844 return ERROR_JTAG_RESET_CANT_SRST;
847 if (req_trst && !(jtag_reset_config & RESET_HAS_TRST))
853 /* allocate memory for a new list member */
854 *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
855 (*last_cmd)->next = NULL;
856 last_comand_pointer = &((*last_cmd)->next);
857 (*last_cmd)->type = JTAG_RESET;
859 (*last_cmd)->cmd.reset = cmd_queue_alloc(sizeof(reset_command_t));
860 (*last_cmd)->cmd.reset->trst = req_trst;
861 (*last_cmd)->cmd.reset->srst = req_srst;
863 jtag_trst = req_trst;
864 jtag_srst = req_srst;
868 jtag_call_event_callbacks(JTAG_SRST_ASSERTED);
872 jtag_call_event_callbacks(JTAG_SRST_RELEASED);
873 if (jtag_nsrst_delay)
874 jtag_add_sleep(jtag_nsrst_delay * 1000);
879 last_cmd = &((*last_cmd)->next);
881 /* allocate memory for a new list member */
882 *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
883 (*last_cmd)->next = NULL;
884 last_comand_pointer = &((*last_cmd)->next);
885 (*last_cmd)->type = JTAG_STATEMOVE;
887 (*last_cmd)->cmd.statemove = cmd_queue_alloc(sizeof(statemove_command_t));
888 (*last_cmd)->cmd.statemove->end_state = TAP_TLR;
890 jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
891 cmd_queue_cur_state = TAP_TLR;
892 cmd_queue_end_state = TAP_TLR;
900 /* we just asserted nTRST, so we're now in Test-Logic-Reset,
901 * and inform possible listeners about this
903 cmd_queue_cur_state = TAP_TLR;
904 jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
908 /* the nTRST line got deasserted, so we're still in Test-Logic-Reset,
909 * but we might want to add a delay to give the TAP time to settle
911 if (jtag_ntrst_delay)
912 jtag_add_sleep(jtag_ntrst_delay * 1000);
919 int jtag_add_end_state(enum tap_state state)
921 jtag_command_t **last_cmd = jtag_get_last_command_p();
923 /* allocate memory for a new list member */
924 *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
925 (*last_cmd)->next = NULL;
926 last_comand_pointer = &((*last_cmd)->next);
927 (*last_cmd)->type = JTAG_END_STATE;
929 (*last_cmd)->cmd.end_state = cmd_queue_alloc(sizeof(end_state_command_t));
930 (*last_cmd)->cmd.end_state->end_state = state;
933 cmd_queue_end_state = state;
938 int jtag_add_sleep(u32 us)
940 jtag_command_t **last_cmd = jtag_get_last_command_p();
942 /* allocate memory for a new list member */
943 *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
944 (*last_cmd)->next = NULL;
945 last_comand_pointer = &((*last_cmd)->next);
946 (*last_cmd)->type = JTAG_SLEEP;
948 (*last_cmd)->cmd.sleep = cmd_queue_alloc(sizeof(sleep_command_t));
949 (*last_cmd)->cmd.sleep->us = us;
954 int jtag_scan_size(scan_command_t *cmd)
959 /* count bits in scan command */
960 for (i = 0; i < cmd->num_fields; i++)
962 bit_count += cmd->fields[i].num_bits;
968 int jtag_build_buffer(scan_command_t *cmd, u8 **buffer)
973 bit_count = jtag_scan_size(cmd);
974 *buffer = malloc(CEIL(bit_count, 8));
978 for (i = 0; i < cmd->num_fields; i++)
980 if (cmd->fields[i].out_value)
982 #ifdef _DEBUG_JTAG_IO_
983 char* char_buf = buf_to_str(cmd->fields[i].out_value, (cmd->fields[i].num_bits > 64) ? 64 : cmd->fields[i].num_bits, 16);
985 buf_set_buf(cmd->fields[i].out_value, 0, *buffer, bit_count, cmd->fields[i].num_bits);
986 #ifdef _DEBUG_JTAG_IO_
987 DEBUG("fields[%i].out_value: 0x%s", i, char_buf);
992 bit_count += cmd->fields[i].num_bits;
999 int jtag_read_buffer(u8 *buffer, scan_command_t *cmd)
1005 /* we return ERROR_OK, unless a check fails, or a handler reports a problem */
1008 for (i = 0; i < cmd->num_fields; i++)
1010 /* if neither in_value nor in_handler
1011 * are specified we don't have to examine this field
1013 if (cmd->fields[i].in_value || cmd->fields[i].in_handler)
1015 int num_bits = cmd->fields[i].num_bits;
1016 u8 *captured = buf_set_buf(buffer, bit_count, malloc(CEIL(num_bits, 8)), 0, num_bits);
1018 #ifdef _DEBUG_JTAG_IO_
1021 char_buf = buf_to_str(captured, (num_bits > 64) ? 64 : num_bits, 16);
1022 DEBUG("fields[%i].in_value: 0x%s", i, char_buf);
1026 if (cmd->fields[i].in_value)
1028 buf_cpy(captured, cmd->fields[i].in_value, num_bits);
1030 if (cmd->fields[i].in_handler)
1032 if (cmd->fields[i].in_handler(cmd->fields[i].in_value, cmd->fields[i].in_handler_priv, cmd->fields+i) != ERROR_OK)
1034 WARNING("in_handler reported a failed check");
1035 retval = ERROR_JTAG_QUEUE_FAILED;
1040 /* no in_value specified, but a handler takes care of the scanned data */
1041 if (cmd->fields[i].in_handler && (!cmd->fields[i].in_value))
1043 if (cmd->fields[i].in_handler(captured, cmd->fields[i].in_handler_priv, cmd->fields+i) != ERROR_OK)
1045 /* We're going to call the error:handler later, but if the in_handler
1046 * reported an error we report this failure upstream
1048 WARNING("in_handler reported a failed check");
1049 retval = ERROR_JTAG_QUEUE_FAILED;
1055 bit_count += cmd->fields[i].num_bits;
1061 int jtag_check_value(u8 *captured, void *priv, scan_field_t *field)
1063 int retval = ERROR_OK;
1064 int num_bits = field->num_bits;
1066 int compare_failed = 0;
1068 if (field->in_check_mask)
1069 compare_failed = buf_cmp_mask(captured, field->in_check_value, field->in_check_mask, num_bits);
1071 compare_failed = buf_cmp(captured, field->in_check_value, num_bits);
1075 /* An error handler could have caught the failing check
1076 * only report a problem when there wasn't a handler, or if the handler
1077 * acknowledged the error
1081 char *captured_char = buf_to_str(captured, (num_bits > 64) ? 64 : num_bits, 16);
1082 char *in_check_value_char = buf_to_str(field->in_check_value, (num_bits > 64) ? 64 : num_bits, 16);
1084 if (field->in_check_mask)
1086 char *in_check_mask_char;
1087 in_check_mask_char = buf_to_str(field->in_check_mask, (num_bits > 64) ? 64 : num_bits, 16);
1088 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);
1089 free(in_check_mask_char);
1093 WARNING("value captured during scan didn't pass the requested check: captured: 0x%s check_value: 0x%s", captured_char, in_check_value_char);
1096 free(captured_char);
1097 free(in_check_value_char);
1105 set up checking of this field using the in_handler. The values passed in must be valid until
1106 after jtag_execute() has completed.
1108 void jtag_set_check_value(scan_field_t *field, u8 *value, u8 *mask, error_handler_t *in_error_handler)
1111 field->in_handler = jtag_check_value;
1113 field->in_handler = NULL; /* No check, e.g. embeddedice uses value==NULL to indicate no check */
1114 field->in_handler_priv = NULL; /* this will be filled in at the invocation site to point to the field duplicate */
1115 field->in_check_value = value;
1116 field->in_check_mask = mask;
1119 enum scan_type jtag_scan_type(scan_command_t *cmd)
1124 for (i = 0; i < cmd->num_fields; i++)
1126 if (cmd->fields[i].in_value || cmd->fields[i].in_handler)
1128 if (cmd->fields[i].out_value)
1135 int jtag_execute_queue(void)
1139 retval = jtag->execute_queue();
1143 jtag_command_queue = NULL;
1144 last_comand_pointer = &jtag_command_queue;
1149 int jtag_cancel_queue(void)
1152 jtag_command_queue = NULL;
1153 last_comand_pointer = &jtag_command_queue;
1158 int jtag_reset_callback(enum jtag_event event, void *priv)
1160 jtag_device_t *device = priv;
1164 if (event == JTAG_TRST_ASSERTED)
1166 buf_set_ones(device->cur_instr, device->ir_length);
1173 void jtag_sleep(u32 us)
1178 /* Try to examine chain layout according to IEEE 1149.1 §12
1180 int jtag_examine_chain()
1182 jtag_device_t *device = jtag_devices;
1184 u8 idcode_buffer[JTAG_MAX_CHAIN_SIZE * 4];
1187 int device_count = 0;
1188 u8 zero_check = 0x0;
1189 u8 one_check = 0xff;
1192 field.num_bits = sizeof(idcode_buffer) * 8;
1193 field.out_value = idcode_buffer;
1194 field.out_mask = NULL;
1195 field.in_value = idcode_buffer;
1196 field.in_check_value = NULL;
1197 field.in_check_mask = NULL;
1198 field.in_handler = NULL;
1199 field.in_handler_priv = NULL;
1201 for (i = 0; i < JTAG_MAX_CHAIN_SIZE; i++)
1203 buf_set_u32(idcode_buffer, i * 32, 32, 0x000000FF);
1206 jtag_add_plain_dr_scan(1, &field, TAP_TLR, NULL);
1207 jtag_execute_queue();
1209 for (i = 0; i < JTAG_MAX_CHAIN_SIZE * 4; i++)
1211 zero_check |= idcode_buffer[i];
1212 one_check &= idcode_buffer[i];
1215 /* if there wasn't a single non-zero bit or if all bits were one, the scan isn't valid */
1216 if ((zero_check == 0x00) || (one_check == 0xff))
1218 ERROR("JTAG communication failure, check connection, JTAG interface, target power etc.");
1219 return ERROR_JTAG_INIT_FAILED;
1222 for (bit_count = 0; bit_count < (JTAG_MAX_CHAIN_SIZE * 32) - 31;)
1224 u32 idcode = buf_get_u32(idcode_buffer, bit_count, 32);
1225 if ((idcode & 1) == 0)
1227 /* LSB must not be 0, this indicates a device in bypass */
1238 if (idcode == 0x000000FF)
1240 /* End of chain (invalid manufacturer ID) */
1246 device->idcode = idcode;
1247 device = device->next;
1251 manufacturer = (idcode & 0xffe) >> 1;
1252 part = (idcode & 0xffff000) >> 12;
1253 version = (idcode & 0xf0000000) >> 28;
1255 INFO("JTAG device found: 0x%8.8x (Manufacturer: 0x%3.3x, Part: 0x%4.4x, Version: 0x%1.1x)",
1256 idcode, manufacturer, part, version);
1262 /* see if number of discovered devices matches configuration */
1263 if (device_count != jtag_num_devices)
1265 ERROR("number of discovered devices in JTAG chain (%i) doesn't match configuration (%i)",
1266 device_count, jtag_num_devices);
1267 ERROR("check the config file and ensure proper JTAG communication (connections, speed, ...)");
1268 return ERROR_JTAG_INIT_FAILED;
1274 int jtag_validate_chain()
1276 jtag_device_t *device = jtag_devices;
1277 int total_ir_length = 0;
1284 total_ir_length += device->ir_length;
1285 device = device->next;
1288 total_ir_length += 2;
1289 ir_test = malloc(CEIL(total_ir_length, 8));
1290 buf_set_ones(ir_test, total_ir_length);
1293 field.num_bits = total_ir_length;
1294 field.out_value = ir_test;
1295 field.out_mask = NULL;
1296 field.in_value = ir_test;
1297 field.in_check_value = NULL;
1298 field.in_check_mask = NULL;
1299 field.in_handler = NULL;
1300 field.in_handler_priv = NULL;
1302 jtag_add_plain_ir_scan(1, &field, TAP_TLR, NULL);
1303 jtag_execute_queue();
1305 device = jtag_devices;
1308 if (buf_get_u32(ir_test, chain_pos, 2) != 0x1)
1310 char *cbuf = buf_to_str(ir_test, total_ir_length, 16);
1311 ERROR("Error validating JTAG scan chain, IR mismatch, scan returned 0x%s", cbuf);
1314 return ERROR_JTAG_INIT_FAILED;
1316 chain_pos += device->ir_length;
1317 device = device->next;
1320 if (buf_get_u32(ir_test, chain_pos, 2) != 0x3)
1322 char *cbuf = buf_to_str(ir_test, total_ir_length, 16);
1323 ERROR("Error validating JTAG scan chain, IR mismatch, scan returned 0x%s", cbuf);
1326 return ERROR_JTAG_INIT_FAILED;
1334 int jtag_register_commands(struct command_context_s *cmd_ctx)
1336 register_command(cmd_ctx, NULL, "interface", handle_interface_command,
1337 COMMAND_CONFIG, NULL);
1338 register_command(cmd_ctx, NULL, "jtag_speed", handle_jtag_speed_command,
1339 COMMAND_ANY, "set jtag speed (if supported) <speed>");
1340 register_command(cmd_ctx, NULL, "jtag_device", handle_jtag_device_command,
1341 COMMAND_CONFIG, NULL);
1342 register_command(cmd_ctx, NULL, "reset_config", handle_reset_config_command,
1343 COMMAND_CONFIG, NULL);
1344 register_command(cmd_ctx, NULL, "jtag_nsrst_delay", handle_jtag_nsrst_delay_command,
1345 COMMAND_CONFIG, NULL);
1346 register_command(cmd_ctx, NULL, "jtag_ntrst_delay", handle_jtag_ntrst_delay_command,
1347 COMMAND_CONFIG, NULL);
1349 register_command(cmd_ctx, NULL, "scan_chain", handle_scan_chain_command,
1350 COMMAND_EXEC, "print current scan chain configuration");
1352 register_command(cmd_ctx, NULL, "endstate", handle_endstate_command,
1353 COMMAND_EXEC, "finish JTAG operations in <tap_state>");
1354 register_command(cmd_ctx, NULL, "jtag_reset", handle_jtag_reset_command,
1355 COMMAND_EXEC, "toggle reset lines <trst> <srst>");
1356 register_command(cmd_ctx, NULL, "runtest", handle_runtest_command,
1357 COMMAND_EXEC, "move to Run-Test/Idle, and execute <num_cycles>");
1358 register_command(cmd_ctx, NULL, "statemove", handle_statemove_command,
1359 COMMAND_EXEC, "move to current endstate or [tap_state]");
1360 register_command(cmd_ctx, NULL, "irscan", handle_irscan_command,
1361 COMMAND_EXEC, "execute IR scan <device> <instr> [dev2] [instr2] ...");
1362 register_command(cmd_ctx, NULL, "drscan", handle_drscan_command,
1363 COMMAND_EXEC, "execute DR scan <device> <var> [dev2] [var2] ...");
1365 register_command(cmd_ctx, NULL, "verify_ircapture", handle_verify_ircapture_command,
1366 COMMAND_ANY, "verify value captured during Capture-IR <enable|disable>");
1370 int jtag_init(struct command_context_s *cmd_ctx)
1372 int i, validate_tries = 0;
1376 if (jtag_speed == -1)
1379 if (jtag_interface && (jtag_interface[0] != 0))
1380 /* configuration var 'jtag_interface' is set, and not empty */
1381 for (i = 0; jtag_interfaces[i]; i++)
1383 if (strcmp(jtag_interface, jtag_interfaces[i]->name) == 0)
1385 jtag_device_t *device;
1386 device = jtag_devices;
1388 if (jtag_interfaces[i]->init() != ERROR_OK)
1389 return ERROR_JTAG_INIT_FAILED;
1390 jtag = jtag_interfaces[i];
1392 jtag_ir_scan_size = 0;
1393 jtag_num_devices = 0;
1394 while (device != NULL)
1396 jtag_ir_scan_size += device->ir_length;
1398 device = device->next;
1401 jtag_add_statemove(TAP_TLR);
1402 jtag_execute_queue();
1404 /* examine chain first, as this could discover the real chain layout */
1405 if (jtag_examine_chain() != ERROR_OK)
1407 ERROR("trying to validate configured JTAG chain anyway...");
1410 while (jtag_validate_chain() != ERROR_OK)
1413 if (validate_tries > 5)
1415 ERROR("Could not validate JTAG chain, exit");
1417 return ERROR_JTAG_INVALID_INTERFACE;
1426 /* no valid interface was found (i.e. the configuration option,
1427 * didn't match one of the compiled-in interfaces
1429 ERROR("No valid jtag interface found (%s)", jtag_interface);
1430 ERROR("compiled-in jtag interfaces:");
1431 for (i = 0; jtag_interfaces[i]; i++)
1433 ERROR("%i: %s", i, jtag_interfaces[i]->name);
1437 return ERROR_JTAG_INVALID_INTERFACE;
1440 int handle_interface_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1444 /* only if the configuration var isn't overwritten from cmdline */
1445 if (!jtag_interface)
1447 if (args[0] && (args[0][0] != 0))
1449 for (i=0; jtag_interfaces[i]; i++)
1451 if (strcmp(args[0], jtag_interfaces[i]->name) == 0)
1453 if (jtag_interfaces[i]->register_commands(cmd_ctx) != ERROR_OK)
1456 jtag_interface = jtag_interfaces[i]->name;
1463 /* remember the requested interface name, so we can complain about it later */
1464 jtag_interface = strdup(args[0]);
1465 DEBUG("'interface' command didn't specify a valid interface");
1471 int handle_jtag_device_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1473 jtag_device_t **last_device_p = &jtag_devices;
1477 while ((*last_device_p)->next)
1478 last_device_p = &((*last_device_p)->next);
1479 last_device_p = &((*last_device_p)->next);
1485 *last_device_p = malloc(sizeof(jtag_device_t));
1486 (*last_device_p)->ir_length = strtoul(args[0], NULL, 0);
1488 (*last_device_p)->expected = malloc((*last_device_p)->ir_length);
1489 buf_set_u32((*last_device_p)->expected, 0, (*last_device_p)->ir_length, strtoul(args[1], NULL, 0));
1490 (*last_device_p)->expected_mask = malloc((*last_device_p)->ir_length);
1491 buf_set_u32((*last_device_p)->expected_mask, 0, (*last_device_p)->ir_length, strtoul(args[2], NULL, 0));
1493 (*last_device_p)->cur_instr = malloc((*last_device_p)->ir_length);
1494 (*last_device_p)->bypass = 1;
1495 buf_set_ones((*last_device_p)->cur_instr, (*last_device_p)->ir_length);
1497 (*last_device_p)->next = NULL;
1499 jtag_register_event_callback(jtag_reset_callback, (*last_device_p));
1506 int handle_scan_chain_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1508 jtag_device_t *device = jtag_devices;
1509 int device_count = 0;
1513 u32 expected, expected_mask, cur_instr;
1514 expected = buf_get_u32(device->expected, 0, device->ir_length);
1515 expected_mask = buf_get_u32(device->expected_mask, 0, device->ir_length);
1516 cur_instr = buf_get_u32(device->cur_instr, 0, device->ir_length);
1517 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);
1518 device = device->next;
1525 int handle_reset_config_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1529 if (strcmp(args[0], "none") == 0)
1530 jtag_reset_config = RESET_NONE;
1531 else if (strcmp(args[0], "trst_only") == 0)
1532 jtag_reset_config = RESET_HAS_TRST;
1533 else if (strcmp(args[0], "srst_only") == 0)
1534 jtag_reset_config = RESET_HAS_SRST;
1535 else if (strcmp(args[0], "trst_and_srst") == 0)
1536 jtag_reset_config = RESET_TRST_AND_SRST;
1539 ERROR("invalid reset_config argument, defaulting to none");
1540 jtag_reset_config = RESET_NONE;
1541 return ERROR_INVALID_ARGUMENTS;
1547 if (strcmp(args[1], "srst_pulls_trst") == 0)
1548 jtag_reset_config |= RESET_SRST_PULLS_TRST;
1549 else if (strcmp(args[1], "trst_pulls_srst") == 0)
1550 jtag_reset_config |= RESET_TRST_PULLS_SRST;
1551 else if (strcmp(args[1], "combined") == 0)
1552 jtag_reset_config |= RESET_SRST_PULLS_TRST | RESET_TRST_PULLS_SRST;
1553 else if (strcmp(args[1], "separate") == 0)
1554 jtag_reset_config &= ~(RESET_SRST_PULLS_TRST | RESET_TRST_PULLS_SRST);
1557 ERROR("invalid reset_config argument, defaulting to none");
1558 jtag_reset_config = RESET_NONE;
1559 return ERROR_INVALID_ARGUMENTS;
1565 if (strcmp(args[2], "trst_open_drain") == 0)
1566 jtag_reset_config |= RESET_TRST_OPEN_DRAIN;
1567 else if (strcmp(args[2], "trst_push_pull") == 0)
1568 jtag_reset_config &= ~RESET_TRST_OPEN_DRAIN;
1571 ERROR("invalid reset_config argument, defaulting to none");
1572 jtag_reset_config = RESET_NONE;
1573 return ERROR_INVALID_ARGUMENTS;
1579 if (strcmp(args[3], "srst_push_pull") == 0)
1580 jtag_reset_config |= RESET_SRST_PUSH_PULL;
1581 else if (strcmp(args[3], "srst_open_drain") == 0)
1582 jtag_reset_config &= ~RESET_SRST_PUSH_PULL;
1585 ERROR("invalid reset_config argument, defaulting to none");
1586 jtag_reset_config = RESET_NONE;
1587 return ERROR_INVALID_ARGUMENTS;
1594 int handle_jtag_nsrst_delay_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1598 ERROR("jtag_nsrst_delay <ms> command takes one required argument");
1603 jtag_nsrst_delay = strtoul(args[0], NULL, 0);
1609 int handle_jtag_ntrst_delay_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1613 ERROR("jtag_ntrst_delay <ms> command takes one required argument");
1618 jtag_ntrst_delay = strtoul(args[0], NULL, 0);
1624 int handle_jtag_speed_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1627 command_print(cmd_ctx, "jtag_speed: %i", jtag_speed);
1631 /* this command can be called during CONFIG,
1632 * in which case jtag isn't initialized */
1634 jtag->speed(strtoul(args[0], NULL, 0));
1636 jtag_speed = strtoul(args[0], NULL, 0);
1642 int handle_endstate_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1644 enum tap_state state;
1648 command_print(cmd_ctx, "usage: endstate <tap_state>");
1652 for (state = 0; state < 16; state++)
1654 if (strcmp(args[0], tap_state_strings[state]) == 0)
1656 jtag_add_end_state(state);
1657 jtag_execute_queue();
1661 command_print(cmd_ctx, "current endstate: %s", tap_state_strings[end_state]);
1666 int handle_jtag_reset_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1670 char *usage = "usage: jtag_reset <trst> <srst>";
1675 command_print(cmd_ctx, usage);
1679 if (args[0][0] == '1')
1681 else if (args[0][0] == '0')
1685 command_print(cmd_ctx, usage);
1689 if (args[1][0] == '1')
1691 else if (args[1][0] == '0')
1695 command_print(cmd_ctx, usage);
1699 if ((retval = jtag_add_reset(trst, srst)) != ERROR_OK)
1703 case ERROR_JTAG_RESET_WOULD_ASSERT_TRST:
1704 command_print(cmd_ctx, "requested reset would assert trst\nif this is acceptable, use jtag_reset 1 %c", args[1][0]);
1706 case ERROR_JTAG_RESET_CANT_SRST:
1707 command_print(cmd_ctx, "can't assert srst because the current reset_config doesn't support it");
1710 command_print(cmd_ctx, "unknown error");
1713 jtag_execute_queue();
1718 int handle_runtest_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1722 command_print(cmd_ctx, "usage: runtest <num_cycles>");
1726 jtag_add_runtest(strtol(args[0], NULL, 0), -1);
1727 jtag_execute_queue();
1733 int handle_statemove_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1735 enum tap_state state;
1740 for (state = 0; state < 16; state++)
1742 if (strcmp(args[0], tap_state_strings[state]) == 0)
1749 jtag_add_statemove(state);
1750 jtag_execute_queue();
1756 int handle_irscan_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1759 scan_field_t *fields;
1761 if ((argc < 2) || (argc % 2))
1763 command_print(cmd_ctx, "usage: irscan <device> <instr> [dev2] [instr2] ...");
1767 fields = malloc(sizeof(scan_field_t) * argc / 2);
1769 for (i = 0; i < argc / 2; i++)
1771 int device = strtoul(args[i*2], NULL, 0);
1772 int field_size = jtag_get_device(device)->ir_length;
1773 fields[i].device = device;
1774 fields[i].out_value = malloc(CEIL(field_size, 8));
1775 buf_set_u32(fields[i].out_value, 0, field_size, strtoul(args[i*2+1], NULL, 0));
1776 fields[i].out_mask = NULL;
1777 fields[i].in_value = NULL;
1778 fields[i].in_check_mask = NULL;
1779 fields[i].in_handler = NULL;
1780 fields[i].in_handler_priv = NULL;
1783 jtag_add_ir_scan(argc / 2, fields, -1, NULL);
1784 jtag_execute_queue();
1786 for (i = 0; i < argc / 2; i++)
1787 free(fields[i].out_value);
1794 int handle_drscan_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1796 scan_field_t *fields;
1798 int field_count = 0;
1802 if ((argc < 2) || (argc % 2))
1804 command_print(cmd_ctx, "usage: drscan <device> <var> [dev2] [var2]");
1808 for (i = 0; i < argc; i+=2)
1810 var = get_var_by_namenum(args[i+1]);
1813 num_fields += var->num_fields;
1817 command_print(cmd_ctx, "variable %s doesn't exist", args[i+1]);
1822 fields = malloc(sizeof(scan_field_t) * num_fields);
1824 for (i = 0; i < argc; i+=2)
1826 var = get_var_by_namenum(args[i+1]);
1828 for (j = 0; j < var->num_fields; j++)
1830 fields[field_count].device = strtol(args[i], NULL, 0);
1831 fields[field_count].num_bits = var->fields[j].num_bits;
1832 fields[field_count].out_value = malloc(CEIL(var->fields[j].num_bits, 8));
1833 buf_set_u32(fields[field_count].out_value, 0, var->fields[j].num_bits, var->fields[j].value);
1834 fields[field_count].out_mask = NULL;
1835 fields[field_count].in_value = fields[field_count].out_value;
1836 fields[field_count].in_check_mask = NULL;
1837 fields[field_count].in_check_value = NULL;
1838 fields[field_count].in_handler = field_le_to_host;
1839 fields[field_count++].in_handler_priv = &(var->fields[j]);
1843 jtag_add_dr_scan(num_fields, fields, -1, NULL);
1844 jtag_execute_queue();
1846 for (i = 0; i < argc / 2; i++)
1847 free(fields[i].out_value);
1854 int handle_verify_ircapture_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1858 command_print(cmd_ctx, "verify Capture-IR is %s", (jtag_verify_capture_ir) ? "enabled": "disabled");
1862 if (strcmp(args[0], "enable") == 0)
1864 jtag_verify_capture_ir = 1;
1866 else if (strcmp(args[0], "disable") == 0)
1868 jtag_verify_capture_ir = 0;