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_ir_scan(int num_fields, scan_field_t *fields, enum tap_state endstate, error_handler_t *error_handler);
213 int jtag_add_dr_scan(int num_fields, scan_field_t *fields, enum tap_state endstate, error_handler_t *error_handler);
214 int jtag_add_plain_ir_scan(int num_fields, scan_field_t *fields, enum tap_state endstate, error_handler_t *error_handler);
215 int jtag_add_plain_dr_scan(int num_fields, scan_field_t *fields, enum tap_state endstate, error_handler_t *error_handler);
216 int jtag_add_statemove(enum tap_state endstate);
217 int jtag_add_pathmove(int num_states, enum tap_state *path);
218 int jtag_add_runtest(int num_cycles, enum tap_state endstate);
219 int jtag_add_reset(int trst, int srst);
220 int jtag_add_end_state(enum tap_state endstate);
221 int jtag_add_sleep(u32 us);
222 int jtag_execute_queue(void);
223 int jtag_cancel_queue(void);
226 int handle_interface_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
227 int handle_jtag_speed_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
228 int handle_jtag_device_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
229 int handle_reset_config_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
230 int handle_jtag_nsrst_delay_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
231 int handle_jtag_ntrst_delay_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
233 int handle_scan_chain_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
235 int handle_endstate_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
236 int handle_jtag_reset_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
237 int handle_runtest_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
238 int handle_statemove_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
239 int handle_irscan_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
240 int handle_drscan_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
242 int handle_verify_ircapture_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
244 int jtag_register_event_callback(int (*callback)(enum jtag_event event, void *priv), void *priv)
246 jtag_event_callback_t **callbacks_p = &jtag_event_callbacks;
248 if (callback == NULL)
250 return ERROR_INVALID_ARGUMENTS;
255 while ((*callbacks_p)->next)
256 callbacks_p = &((*callbacks_p)->next);
257 callbacks_p = &((*callbacks_p)->next);
260 (*callbacks_p) = malloc(sizeof(jtag_event_callback_t));
261 (*callbacks_p)->callback = callback;
262 (*callbacks_p)->priv = priv;
263 (*callbacks_p)->next = NULL;
268 int jtag_unregister_event_callback(int (*callback)(enum jtag_event event, void *priv))
270 jtag_event_callback_t **callbacks_p = &jtag_event_callbacks;
272 if (callback == NULL)
274 return ERROR_INVALID_ARGUMENTS;
279 jtag_event_callback_t **next = &((*callbacks_p)->next);
280 if ((*callbacks_p)->callback == callback)
283 *callbacks_p = *next;
291 int jtag_call_event_callbacks(enum jtag_event event)
293 jtag_event_callback_t *callback = jtag_event_callbacks;
295 DEBUG("jtag event: %s", jtag_event_strings[event]);
299 callback->callback(event, callback->priv);
300 callback = callback->next;
306 /* returns a pointer to the pointer of the last command in queue
307 * this may be a pointer to the root pointer (jtag_command_queue)
308 * or to the next member of the last but one command
310 jtag_command_t** jtag_get_last_command_p(void)
312 /* jtag_command_t *cmd = jtag_command_queue;
318 return &jtag_command_queue;
322 return last_comand_pointer;
325 /* returns a pointer to the n-th device in the scan chain */
326 jtag_device_t* jtag_get_device(int num)
328 jtag_device_t *device = jtag_devices;
335 device = device->next;
342 void* cmd_queue_alloc(size_t size)
344 cmd_queue_page_t **p_page = &cmd_queue_pages;
349 while ((*p_page)->next)
350 p_page = &((*p_page)->next);
351 if (CMD_QUEUE_PAGE_SIZE - (*p_page)->used < size)
352 p_page = &((*p_page)->next);
357 *p_page = malloc(sizeof(cmd_queue_page_t));
359 (*p_page)->address = malloc(CMD_QUEUE_PAGE_SIZE);
360 (*p_page)->next = NULL;
363 offset = (*p_page)->used;
364 (*p_page)->used += size;
366 return ((*p_page)->address) + offset;
369 void cmd_queue_free()
371 cmd_queue_page_t *page = cmd_queue_pages;
375 cmd_queue_page_t *last = page;
381 cmd_queue_pages = NULL;
384 int jtag_add_ir_scan(int num_fields, scan_field_t *fields, enum tap_state state, error_handler_t *error_handler)
386 jtag_command_t **last_cmd;
387 jtag_device_t *device;
393 WARNING("JTAG command queued, while TRST is low (TAP in reset)");
394 return ERROR_JTAG_TRST_ASSERTED;
397 last_cmd = jtag_get_last_command_p();
399 /* allocate memory for a new list member */
400 *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
401 (*last_cmd)->next = NULL;
402 last_comand_pointer = &((*last_cmd)->next);
403 (*last_cmd)->type = JTAG_SCAN;
405 /* allocate memory for ir scan command */
406 (*last_cmd)->cmd.scan = cmd_queue_alloc(sizeof(scan_command_t));
407 (*last_cmd)->cmd.scan->ir_scan = 1;
408 (*last_cmd)->cmd.scan->num_fields = jtag_num_devices; /* one field per device */
409 (*last_cmd)->cmd.scan->fields = cmd_queue_alloc(jtag_num_devices * sizeof(scan_field_t));
410 (*last_cmd)->cmd.scan->end_state = state;
413 (*last_cmd)->cmd.scan->error_handler = cmd_queue_alloc(sizeof(error_handler_t));
414 *(*last_cmd)->cmd.scan->error_handler = *error_handler;
418 (*last_cmd)->cmd.scan->error_handler = NULL;
422 cmd_queue_end_state = state;
424 if (cmd_queue_cur_state == TAP_TLR && cmd_queue_end_state != TAP_TLR)
425 jtag_call_event_callbacks(JTAG_TRST_RELEASED);
427 if (cmd_queue_end_state == TAP_TLR)
428 jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
430 cmd_queue_cur_state = cmd_queue_end_state;
432 for (i=0; i < jtag_num_devices; i++)
435 device = jtag_get_device(i);
436 scan_size = device->ir_length;
437 (*last_cmd)->cmd.scan->fields[i].device = i;
438 (*last_cmd)->cmd.scan->fields[i].num_bits = scan_size;
439 (*last_cmd)->cmd.scan->fields[i].in_value = NULL;
440 if (jtag_verify_capture_ir)
442 (*last_cmd)->cmd.scan->fields[i].in_check_value = buf_cpy(device->expected, cmd_queue_alloc(CEIL(scan_size, 8)), scan_size);
443 (*last_cmd)->cmd.scan->fields[i].in_check_mask = buf_cpy(device->expected_mask, cmd_queue_alloc(CEIL(scan_size, 8)), scan_size);
447 (*last_cmd)->cmd.scan->fields[i].in_check_value = NULL;
448 (*last_cmd)->cmd.scan->fields[i].in_check_mask = NULL;
450 (*last_cmd)->cmd.scan->fields[i].in_handler = NULL;
451 (*last_cmd)->cmd.scan->fields[i].in_handler_priv = NULL;
453 /* search the list */
454 for (j=0; j < num_fields; j++)
456 if (i == fields[j].device)
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);
469 /* if a device isn't listed, set it to BYPASS */
470 (*last_cmd)->cmd.scan->fields[i].out_value = buf_set_ones(cmd_queue_alloc(CEIL(scan_size, 8)), scan_size);
471 (*last_cmd)->cmd.scan->fields[i].out_mask = NULL;
476 /* update device information */
477 buf_cpy((*last_cmd)->cmd.scan->fields[i].out_value, jtag_get_device(i)->cur_instr, scan_size);
483 int jtag_add_plain_ir_scan(int num_fields, scan_field_t *fields, enum tap_state state, error_handler_t *error_handler)
485 jtag_command_t **last_cmd;
490 WARNING("JTAG command queued, while TRST is low (TAP in reset)");
491 return ERROR_JTAG_TRST_ASSERTED;
494 last_cmd = jtag_get_last_command_p();
496 /* allocate memory for a new list member */
497 *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
498 (*last_cmd)->next = NULL;
499 last_comand_pointer = &((*last_cmd)->next);
500 (*last_cmd)->type = JTAG_SCAN;
502 /* allocate memory for ir scan command */
503 (*last_cmd)->cmd.scan = cmd_queue_alloc(sizeof(scan_command_t));
504 (*last_cmd)->cmd.scan->ir_scan = 1;
505 (*last_cmd)->cmd.scan->num_fields = num_fields;
506 (*last_cmd)->cmd.scan->fields = cmd_queue_alloc(num_fields * sizeof(scan_field_t));
507 (*last_cmd)->cmd.scan->end_state = state;
510 (*last_cmd)->cmd.scan->error_handler = cmd_queue_alloc(sizeof(error_handler_t));
511 *(*last_cmd)->cmd.scan->error_handler = *error_handler;
515 (*last_cmd)->cmd.scan->error_handler = NULL;
519 cmd_queue_end_state = state;
521 if (cmd_queue_cur_state == TAP_TLR && cmd_queue_end_state != TAP_TLR)
522 jtag_call_event_callbacks(JTAG_TRST_RELEASED);
524 if (cmd_queue_end_state == TAP_TLR)
525 jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
527 cmd_queue_cur_state = cmd_queue_end_state;
529 for (i = 0; i < num_fields; i++)
531 int num_bits = fields[i].num_bits;
532 int num_bytes = CEIL(fields[i].num_bits, 8);
533 (*last_cmd)->cmd.scan->fields[i].device = fields[i].device;
534 (*last_cmd)->cmd.scan->fields[i].num_bits = num_bits;
535 (*last_cmd)->cmd.scan->fields[i].out_value = buf_cpy(fields[i].out_value, cmd_queue_alloc(num_bytes), num_bits);
536 (*last_cmd)->cmd.scan->fields[i].out_mask = buf_cpy(fields[i].out_mask, cmd_queue_alloc(num_bytes), num_bits);
537 (*last_cmd)->cmd.scan->fields[i].in_value = fields[i].in_value;
538 (*last_cmd)->cmd.scan->fields[i].in_check_value = buf_cpy(fields[i].in_check_value, cmd_queue_alloc(num_bytes), num_bits);
539 (*last_cmd)->cmd.scan->fields[i].in_check_mask = buf_cpy(fields[i].in_check_mask, cmd_queue_alloc(num_bytes), num_bits);
540 (*last_cmd)->cmd.scan->fields[i].in_handler = NULL;
541 (*last_cmd)->cmd.scan->fields[i].in_handler_priv = NULL;
546 int jtag_add_dr_scan(int num_fields, scan_field_t *fields, enum tap_state state, error_handler_t *error_handler)
549 int bypass_devices = 0;
551 jtag_command_t **last_cmd = jtag_get_last_command_p();
552 jtag_device_t *device = jtag_devices;
557 WARNING("JTAG command queued, while TRST is low (TAP in reset)");
558 return ERROR_JTAG_TRST_ASSERTED;
561 /* count devices in bypass */
566 device = device->next;
569 /* allocate memory for a new list member */
570 *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
571 last_comand_pointer = &((*last_cmd)->next);
572 (*last_cmd)->next = NULL;
573 (*last_cmd)->type = JTAG_SCAN;
575 /* allocate memory for dr scan command */
576 (*last_cmd)->cmd.scan = cmd_queue_alloc(sizeof(scan_command_t));
577 (*last_cmd)->cmd.scan->ir_scan = 0;
578 (*last_cmd)->cmd.scan->num_fields = num_fields + bypass_devices;
579 (*last_cmd)->cmd.scan->fields = cmd_queue_alloc((num_fields + bypass_devices) * sizeof(scan_field_t));
580 (*last_cmd)->cmd.scan->end_state = state;
583 (*last_cmd)->cmd.scan->error_handler = cmd_queue_alloc(sizeof(error_handler_t));
584 *(*last_cmd)->cmd.scan->error_handler = *error_handler;
588 (*last_cmd)->cmd.scan->error_handler = NULL;
592 cmd_queue_end_state = state;
594 if (cmd_queue_cur_state == TAP_TLR && cmd_queue_end_state != TAP_TLR)
595 jtag_call_event_callbacks(JTAG_TRST_RELEASED);
597 if (cmd_queue_end_state == TAP_TLR)
598 jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
600 cmd_queue_cur_state = cmd_queue_end_state;
602 for (i=0; i < jtag_num_devices; i++)
605 (*last_cmd)->cmd.scan->fields[field_count].device = i;
607 for (j=0; j < num_fields; j++)
609 if (i == fields[j].device)
612 scan_size = fields[j].num_bits;
613 (*last_cmd)->cmd.scan->fields[field_count].num_bits = scan_size;
614 (*last_cmd)->cmd.scan->fields[field_count].out_value = buf_cpy(fields[j].out_value, cmd_queue_alloc(CEIL(scan_size, 8)), scan_size);
615 (*last_cmd)->cmd.scan->fields[field_count].out_mask = buf_cpy(fields[j].out_mask, cmd_queue_alloc(CEIL(scan_size, 8)), scan_size);
616 (*last_cmd)->cmd.scan->fields[field_count].in_value = fields[j].in_value;
617 (*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);
618 (*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);
619 (*last_cmd)->cmd.scan->fields[field_count].in_handler = fields[j].in_handler;
620 (*last_cmd)->cmd.scan->fields[field_count++].in_handler_priv = fields[j].in_handler_priv;
625 /* if a device isn't listed, the BYPASS register should be selected */
626 if (!jtag_get_device(i)->bypass)
628 ERROR("BUG: no scan data for a device not in BYPASS");
632 /* program the scan field to 1 bit length, and ignore it's value */
633 (*last_cmd)->cmd.scan->fields[field_count].num_bits = 1;
634 (*last_cmd)->cmd.scan->fields[field_count].out_value = NULL;
635 (*last_cmd)->cmd.scan->fields[field_count].out_mask = NULL;
636 (*last_cmd)->cmd.scan->fields[field_count].in_value = NULL;
637 (*last_cmd)->cmd.scan->fields[field_count].in_check_value = NULL;
638 (*last_cmd)->cmd.scan->fields[field_count].in_check_mask = NULL;
639 (*last_cmd)->cmd.scan->fields[field_count].in_handler = NULL;
640 (*last_cmd)->cmd.scan->fields[field_count++].in_handler_priv = NULL;
644 /* if a device is listed, the BYPASS register must not be selected */
645 if (jtag_get_device(i)->bypass)
647 WARNING("scan data for a device in BYPASS");
654 int jtag_add_plain_dr_scan(int num_fields, scan_field_t *fields, enum tap_state state, error_handler_t *error_handler)
657 jtag_command_t **last_cmd = jtag_get_last_command_p();
661 WARNING("JTAG command queued, while TRST is low (TAP in reset)");
662 return ERROR_JTAG_TRST_ASSERTED;
665 /* allocate memory for a new list member */
666 *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
667 last_comand_pointer = &((*last_cmd)->next);
668 (*last_cmd)->next = NULL;
669 (*last_cmd)->type = JTAG_SCAN;
671 /* allocate memory for scan command */
672 (*last_cmd)->cmd.scan = cmd_queue_alloc(sizeof(scan_command_t));
673 (*last_cmd)->cmd.scan->ir_scan = 0;
674 (*last_cmd)->cmd.scan->num_fields = num_fields;
675 (*last_cmd)->cmd.scan->fields = cmd_queue_alloc(num_fields * sizeof(scan_field_t));
676 (*last_cmd)->cmd.scan->end_state = state;
679 (*last_cmd)->cmd.scan->error_handler = cmd_queue_alloc(sizeof(error_handler_t));
680 *(*last_cmd)->cmd.scan->error_handler = *error_handler;
684 (*last_cmd)->cmd.scan->error_handler = NULL;
688 cmd_queue_end_state = state;
690 if (cmd_queue_cur_state == TAP_TLR && cmd_queue_end_state != TAP_TLR)
691 jtag_call_event_callbacks(JTAG_TRST_RELEASED);
693 if (cmd_queue_end_state == TAP_TLR)
694 jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
696 cmd_queue_cur_state = cmd_queue_end_state;
698 for (i = 0; i < num_fields; i++)
700 int num_bits = fields[i].num_bits;
701 int num_bytes = CEIL(fields[i].num_bits, 8);
702 (*last_cmd)->cmd.scan->fields[i].device = fields[i].device;
703 (*last_cmd)->cmd.scan->fields[i].num_bits = num_bits;
704 (*last_cmd)->cmd.scan->fields[i].out_value = buf_cpy(fields[i].out_value, cmd_queue_alloc(num_bytes), num_bits);
705 (*last_cmd)->cmd.scan->fields[i].out_mask = buf_cpy(fields[i].out_mask, cmd_queue_alloc(num_bytes), num_bits);
706 (*last_cmd)->cmd.scan->fields[i].in_value = fields[i].in_value;
707 (*last_cmd)->cmd.scan->fields[i].in_check_value = buf_cpy(fields[i].in_check_value, cmd_queue_alloc(num_bytes), num_bits);
708 (*last_cmd)->cmd.scan->fields[i].in_check_mask = buf_cpy(fields[i].in_check_mask, cmd_queue_alloc(num_bytes), num_bits);
709 (*last_cmd)->cmd.scan->fields[i].in_handler = fields[i].in_handler;
710 (*last_cmd)->cmd.scan->fields[i].in_handler_priv = fields[i].in_handler_priv;
715 int jtag_add_statemove(enum tap_state state)
717 jtag_command_t **last_cmd = jtag_get_last_command_p();
721 WARNING("JTAG command queued, while TRST is low (TAP in reset)");
722 return ERROR_JTAG_TRST_ASSERTED;
725 /* allocate memory for a new list member */
726 *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
727 last_comand_pointer = &((*last_cmd)->next);
728 (*last_cmd)->next = NULL;
729 (*last_cmd)->type = JTAG_STATEMOVE;
731 (*last_cmd)->cmd.statemove = cmd_queue_alloc(sizeof(statemove_command_t));
732 (*last_cmd)->cmd.statemove->end_state = state;
735 cmd_queue_end_state = state;
737 if (cmd_queue_cur_state == TAP_TLR && cmd_queue_end_state != TAP_TLR)
738 jtag_call_event_callbacks(JTAG_TRST_RELEASED);
740 if (cmd_queue_end_state == TAP_TLR)
741 jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
743 cmd_queue_cur_state = cmd_queue_end_state;
748 int jtag_add_pathmove(int num_states, enum tap_state *path)
750 jtag_command_t **last_cmd = jtag_get_last_command_p();
755 WARNING("JTAG command queued, while TRST is low (TAP in reset)");
756 return ERROR_JTAG_TRST_ASSERTED;
759 /* the last state has to be a stable state */
760 if (tap_move_map[path[num_states - 1]] == -1)
762 ERROR("TAP path doesn't finish in a stable state");
763 return ERROR_JTAG_NOT_IMPLEMENTED;
766 if (jtag->support_pathmove)
768 /* allocate memory for a new list member */
769 *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
770 last_comand_pointer = &((*last_cmd)->next);
771 (*last_cmd)->next = NULL;
772 (*last_cmd)->type = JTAG_PATHMOVE;
774 (*last_cmd)->cmd.pathmove = cmd_queue_alloc(sizeof(pathmove_command_t));
775 (*last_cmd)->cmd.pathmove->num_states = num_states;
776 (*last_cmd)->cmd.pathmove->path = cmd_queue_alloc(sizeof(enum tap_state) * num_states);
778 for (i = 0; i < num_states; i++)
779 (*last_cmd)->cmd.pathmove->path[i] = path[i];
783 /* validate the desired path, and see if it fits a default path */
788 for (i = 0; i < num_states; i++)
790 for (j = i; j < num_states; j++)
792 if (tap_move_map[path[j]] != -1)
799 if (begin - end <= 7) /* a default path spans no more than 7 states */
801 jtag_add_statemove(path[end]);
805 ERROR("encountered a TAP path that can't be fulfilled by default paths");
806 return ERROR_JTAG_NOT_IMPLEMENTED;
813 if (cmd_queue_cur_state == TAP_TLR && cmd_queue_end_state != TAP_TLR)
814 jtag_call_event_callbacks(JTAG_TRST_RELEASED);
816 if (cmd_queue_end_state == TAP_TLR)
817 jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
819 cmd_queue_cur_state = path[num_states - 1];
824 int jtag_add_runtest(int num_cycles, enum tap_state state)
826 jtag_command_t **last_cmd = jtag_get_last_command_p();
830 WARNING("JTAG command queued, while TRST is low (TAP in reset)");
831 return ERROR_JTAG_TRST_ASSERTED;
834 /* allocate memory for a new list member */
835 *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
836 (*last_cmd)->next = NULL;
837 last_comand_pointer = &((*last_cmd)->next);
838 (*last_cmd)->type = JTAG_RUNTEST;
840 (*last_cmd)->cmd.runtest = cmd_queue_alloc(sizeof(runtest_command_t));
841 (*last_cmd)->cmd.runtest->num_cycles = num_cycles;
842 (*last_cmd)->cmd.runtest->end_state = state;
845 cmd_queue_end_state = state;
847 if (cmd_queue_cur_state == TAP_TLR && cmd_queue_end_state != TAP_TLR)
848 jtag_call_event_callbacks(JTAG_TRST_RELEASED);
850 if (cmd_queue_end_state == TAP_TLR)
851 jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
853 cmd_queue_cur_state = cmd_queue_end_state;
858 int jtag_add_reset(int req_trst, int req_srst)
860 int trst_with_tms = 0;
862 jtag_command_t **last_cmd = jtag_get_last_command_p();
865 req_trst = jtag_trst;
868 req_srst = jtag_srst;
870 /* Make sure that jtag_reset_config allows the requested reset */
871 /* if SRST pulls TRST, we can't fulfill srst == 1 with trst == 0 */
872 if (((jtag_reset_config & RESET_SRST_PULLS_TRST) && (req_srst == 1)) && (req_trst == 0))
873 return ERROR_JTAG_RESET_WOULD_ASSERT_TRST;
875 /* if TRST pulls SRST, we reset with TAP T-L-R */
876 if (((jtag_reset_config & RESET_TRST_PULLS_SRST) && (req_trst == 1)) && (req_srst == 0))
882 if (req_srst && !(jtag_reset_config & RESET_HAS_SRST))
884 ERROR("requested nSRST assertion, but the current configuration doesn't support this");
885 return ERROR_JTAG_RESET_CANT_SRST;
888 if (req_trst && !(jtag_reset_config & RESET_HAS_TRST))
894 /* allocate memory for a new list member */
895 *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
896 (*last_cmd)->next = NULL;
897 last_comand_pointer = &((*last_cmd)->next);
898 (*last_cmd)->type = JTAG_RESET;
900 (*last_cmd)->cmd.reset = cmd_queue_alloc(sizeof(reset_command_t));
901 (*last_cmd)->cmd.reset->trst = req_trst;
902 (*last_cmd)->cmd.reset->srst = req_srst;
904 jtag_trst = req_trst;
905 jtag_srst = req_srst;
909 jtag_call_event_callbacks(JTAG_SRST_ASSERTED);
913 jtag_call_event_callbacks(JTAG_SRST_RELEASED);
914 if (jtag_nsrst_delay)
915 jtag_add_sleep(jtag_nsrst_delay * 1000);
920 last_cmd = &((*last_cmd)->next);
922 /* allocate memory for a new list member */
923 *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
924 (*last_cmd)->next = NULL;
925 last_comand_pointer = &((*last_cmd)->next);
926 (*last_cmd)->type = JTAG_STATEMOVE;
928 (*last_cmd)->cmd.statemove = cmd_queue_alloc(sizeof(statemove_command_t));
929 (*last_cmd)->cmd.statemove->end_state = TAP_TLR;
931 jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
932 cmd_queue_cur_state = TAP_TLR;
933 cmd_queue_end_state = TAP_TLR;
941 /* we just asserted nTRST, so we're now in Test-Logic-Reset,
942 * and inform possible listeners about this
944 cmd_queue_cur_state = TAP_TLR;
945 jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
949 /* the nTRST line got deasserted, so we're still in Test-Logic-Reset,
950 * but we might want to add a delay to give the TAP time to settle
952 if (jtag_ntrst_delay)
953 jtag_add_sleep(jtag_ntrst_delay * 1000);
960 int jtag_add_end_state(enum tap_state state)
962 jtag_command_t **last_cmd = jtag_get_last_command_p();
964 /* allocate memory for a new list member */
965 *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
966 (*last_cmd)->next = NULL;
967 last_comand_pointer = &((*last_cmd)->next);
968 (*last_cmd)->type = JTAG_END_STATE;
970 (*last_cmd)->cmd.end_state = cmd_queue_alloc(sizeof(end_state_command_t));
971 (*last_cmd)->cmd.end_state->end_state = state;
974 cmd_queue_end_state = state;
979 int jtag_add_sleep(u32 us)
981 jtag_command_t **last_cmd = jtag_get_last_command_p();
983 /* allocate memory for a new list member */
984 *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
985 (*last_cmd)->next = NULL;
986 last_comand_pointer = &((*last_cmd)->next);
987 (*last_cmd)->type = JTAG_SLEEP;
989 (*last_cmd)->cmd.sleep = cmd_queue_alloc(sizeof(sleep_command_t));
990 (*last_cmd)->cmd.sleep->us = us;
995 int jtag_scan_size(scan_command_t *cmd)
1000 /* count bits in scan command */
1001 for (i=0; i<cmd->num_fields; i++)
1003 bit_count += cmd->fields[i].num_bits;
1009 int jtag_build_buffer(scan_command_t *cmd, u8 **buffer)
1014 bit_count = jtag_scan_size(cmd);
1015 *buffer = malloc(CEIL(bit_count, 8));
1019 for (i = 0; i < cmd->num_fields; i++)
1021 if (cmd->fields[i].out_value)
1023 #ifdef _DEBUG_JTAG_IO_
1024 char* char_buf = buf_to_str(cmd->fields[i].out_value, (cmd->fields[i].num_bits > 64) ? 64 : cmd->fields[i].num_bits, 16);
1026 buf_set_buf(cmd->fields[i].out_value, 0, *buffer, bit_count, cmd->fields[i].num_bits);
1027 #ifdef _DEBUG_JTAG_IO_
1028 DEBUG("fields[%i].out_value: 0x%s", i, char_buf);
1033 bit_count += cmd->fields[i].num_bits;
1040 int jtag_read_buffer(u8 *buffer, scan_command_t *cmd)
1046 /* we return ERROR_OK, unless a check fails, or a handler reports a problem */
1049 for (i=0; i < cmd->num_fields; i++)
1051 /* if neither in_value, in_check_value nor in_handler
1052 * are specified we don't have to examine this field
1054 if (cmd->fields[i].in_value || cmd->fields[i].in_check_value || cmd->fields[i].in_handler)
1056 int num_bits = cmd->fields[i].num_bits;
1057 u8 *captured = buf_set_buf(buffer, bit_count, malloc(CEIL(num_bits, 8)), 0, num_bits);
1059 #ifdef _DEBUG_JTAG_IO_
1062 char_buf = buf_to_str(captured, (num_bits > 64) ? 64 : num_bits, 16);
1063 DEBUG("fields[%i].in_value: 0x%s", i, char_buf);
1067 if (cmd->fields[i].in_value)
1069 buf_cpy(captured, cmd->fields[i].in_value, num_bits);
1071 if (cmd->fields[i].in_handler)
1073 if (cmd->fields[i].in_handler(cmd->fields[i].in_value, cmd->fields[i].in_handler_priv) != ERROR_OK)
1075 WARNING("in_handler reported a failed check");
1076 retval = ERROR_JTAG_QUEUE_FAILED;
1081 /* no in_value specified, but a handler takes care of the scanned data */
1082 if (cmd->fields[i].in_handler && (!cmd->fields[i].in_value))
1084 if (cmd->fields[i].in_handler(captured, cmd->fields[i].in_handler_priv) != ERROR_OK)
1086 /* We're going to call the error:handler later, but if the in_handler
1087 * reported an error we report this failure upstream
1089 WARNING("in_handler reported a failed check");
1090 retval = ERROR_JTAG_QUEUE_FAILED;
1094 if (cmd->fields[i].in_check_value)
1096 int compare_failed = 0;
1098 if (cmd->fields[i].in_check_mask)
1099 compare_failed = buf_cmp_mask(captured, cmd->fields[i].in_check_value, cmd->fields[i].in_check_mask, num_bits);
1101 compare_failed = buf_cmp(captured, cmd->fields[i].in_check_value, num_bits);
1105 if (cmd->error_handler)
1107 /* ask the error handler if once has been specified if this is a real problem */
1108 if (cmd->error_handler->error_handler(captured, cmd->error_handler->error_handler_priv) != ERROR_OK)
1109 retval = ERROR_JTAG_QUEUE_FAILED;
1115 /* if there wasn't a handler specified, we report a failure */
1116 retval = ERROR_JTAG_QUEUE_FAILED;
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
1125 char *captured_char = buf_to_str(captured, (num_bits > 64) ? 64 : num_bits, 16);
1126 char *in_check_value_char = buf_to_str(cmd->fields[i].in_check_value, (num_bits > 64) ? 64 : num_bits, 16);
1128 if (cmd->fields[i].in_check_mask)
1130 char *in_check_mask_char;
1131 in_check_mask_char = buf_to_str(cmd->fields[i].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);
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);
1140 free(captured_char);
1141 free(in_check_value_char);
1148 bit_count += cmd->fields[i].num_bits;
1154 enum scan_type jtag_scan_type(scan_command_t *cmd)
1159 for (i=0; i < cmd->num_fields; i++)
1161 if (cmd->fields[i].in_check_value || cmd->fields[i].in_value || cmd->fields[i].in_handler)
1163 if (cmd->fields[i].out_value)
1170 int jtag_execute_queue(void)
1174 retval = jtag->execute_queue();
1178 jtag_command_queue = NULL;
1179 last_comand_pointer = &jtag_command_queue;
1184 int jtag_cancel_queue(void)
1187 jtag_command_queue = NULL;
1188 last_comand_pointer = &jtag_command_queue;
1193 int jtag_reset_callback(enum jtag_event event, void *priv)
1195 jtag_device_t *device = priv;
1199 if (event == JTAG_TRST_ASSERTED)
1201 buf_set_ones(device->cur_instr, device->ir_length);
1208 void jtag_sleep(u32 us)
1213 /* Try to examine chain layout according to IEEE 1149.1 §12
1215 int jtag_examine_chain()
1217 jtag_device_t *device = jtag_devices;
1219 u8 idcode_buffer[JTAG_MAX_CHAIN_SIZE * 4];
1222 int device_count = 0;
1223 u8 zero_check = 0x0;
1224 u8 one_check = 0xff;
1227 field.num_bits = sizeof(idcode_buffer) * 8;
1228 field.out_value = idcode_buffer;
1229 field.out_mask = NULL;
1230 field.in_value = idcode_buffer;
1231 field.in_check_value = NULL;
1232 field.in_check_mask = NULL;
1233 field.in_handler = NULL;
1234 field.in_handler_priv = NULL;
1236 for (i = 0; i < JTAG_MAX_CHAIN_SIZE; i++)
1238 buf_set_u32(idcode_buffer, i * 32, 32, 0x000000FF);
1241 jtag_add_plain_dr_scan(1, &field, TAP_TLR, NULL);
1242 jtag_execute_queue();
1244 for (i = 0; i < JTAG_MAX_CHAIN_SIZE * 4; i++)
1246 zero_check |= idcode_buffer[i];
1247 one_check &= idcode_buffer[i];
1250 /* if there wasn't a single non-zero bit or if all bits were one, the scan isn't valid */
1251 if ((zero_check == 0x00) || (one_check == 0xff))
1253 ERROR("JTAG communication failure, check connection, JTAG interface, target power etc.");
1254 return ERROR_JTAG_INIT_FAILED;
1257 for (bit_count = 0; bit_count < (JTAG_MAX_CHAIN_SIZE * 32) - 31;)
1259 u32 idcode = buf_get_u32(idcode_buffer, bit_count, 32);
1260 if ((idcode & 1) == 0)
1262 /* LSB must not be 0, this indicates a device in bypass */
1273 if (idcode == 0x000000FF)
1275 /* End of chain (invalid manufacturer ID) */
1281 device->idcode = idcode;
1282 device = device->next;
1286 manufacturer = (idcode & 0xffe) >> 1;
1287 part = (idcode & 0xffff000) >> 12;
1288 version = (idcode & 0xf0000000) >> 28;
1290 INFO("JTAG device found: 0x%8.8x (Manufacturer: 0x%3.3x, Part: 0x%4.4x, Version: 0x%1.1x)",
1291 idcode, manufacturer, part, version);
1297 /* see if number of discovered devices matches configuration */
1298 if (device_count != jtag_num_devices)
1300 ERROR("number of discovered devices in JTAG chain (%i) doesn't match configuration (%i)",
1301 device_count, jtag_num_devices);
1302 ERROR("check the config file and ensure proper JTAG communication (connections, speed, ...)");
1303 return ERROR_JTAG_INIT_FAILED;
1309 int jtag_validate_chain()
1311 jtag_device_t *device = jtag_devices;
1312 int total_ir_length = 0;
1319 total_ir_length += device->ir_length;
1320 device = device->next;
1323 total_ir_length += 2;
1324 ir_test = malloc(CEIL(total_ir_length, 8));
1325 buf_set_ones(ir_test, total_ir_length);
1328 field.num_bits = total_ir_length;
1329 field.out_value = ir_test;
1330 field.out_mask = NULL;
1331 field.in_value = ir_test;
1332 field.in_check_value = NULL;
1333 field.in_check_mask = NULL;
1334 field.in_handler = NULL;
1335 field.in_handler_priv = NULL;
1337 jtag_add_plain_ir_scan(1, &field, TAP_TLR, NULL);
1338 jtag_execute_queue();
1340 device = jtag_devices;
1343 if (buf_get_u32(ir_test, chain_pos, 2) != 0x1)
1345 char *cbuf = buf_to_str(ir_test, total_ir_length, 16);
1346 ERROR("Error validating JTAG scan chain, IR mismatch, scan returned 0x%s", cbuf);
1349 return ERROR_JTAG_INIT_FAILED;
1351 chain_pos += device->ir_length;
1352 device = device->next;
1355 if (buf_get_u32(ir_test, chain_pos, 2) != 0x3)
1357 char *cbuf = buf_to_str(ir_test, total_ir_length, 16);
1358 ERROR("Error validating JTAG scan chain, IR mismatch, scan returned 0x%s", cbuf);
1361 return ERROR_JTAG_INIT_FAILED;
1369 int jtag_register_commands(struct command_context_s *cmd_ctx)
1371 register_command(cmd_ctx, NULL, "interface", handle_interface_command,
1372 COMMAND_CONFIG, NULL);
1373 register_command(cmd_ctx, NULL, "jtag_speed", handle_jtag_speed_command,
1374 COMMAND_ANY, "set jtag speed (if supported) <speed>");
1375 register_command(cmd_ctx, NULL, "jtag_device", handle_jtag_device_command,
1376 COMMAND_CONFIG, NULL);
1377 register_command(cmd_ctx, NULL, "reset_config", handle_reset_config_command,
1378 COMMAND_CONFIG, NULL);
1379 register_command(cmd_ctx, NULL, "jtag_nsrst_delay", handle_jtag_nsrst_delay_command,
1380 COMMAND_CONFIG, NULL);
1381 register_command(cmd_ctx, NULL, "jtag_ntrst_delay", handle_jtag_ntrst_delay_command,
1382 COMMAND_CONFIG, NULL);
1384 register_command(cmd_ctx, NULL, "scan_chain", handle_scan_chain_command,
1385 COMMAND_EXEC, "print current scan chain configuration");
1387 register_command(cmd_ctx, NULL, "endstate", handle_endstate_command,
1388 COMMAND_EXEC, "finish JTAG operations in <tap_state>");
1389 register_command(cmd_ctx, NULL, "jtag_reset", handle_jtag_reset_command,
1390 COMMAND_EXEC, "toggle reset lines <trst> <srst>");
1391 register_command(cmd_ctx, NULL, "runtest", handle_runtest_command,
1392 COMMAND_EXEC, "move to Run-Test/Idle, and execute <num_cycles>");
1393 register_command(cmd_ctx, NULL, "statemove", handle_statemove_command,
1394 COMMAND_EXEC, "move to current endstate or [tap_state]");
1395 register_command(cmd_ctx, NULL, "irscan", handle_irscan_command,
1396 COMMAND_EXEC, "execute IR scan <device> <instr> [dev2] [instr2] ...");
1397 register_command(cmd_ctx, NULL, "drscan", handle_drscan_command,
1398 COMMAND_EXEC, "execute DR scan <device> <var> [dev2] [var2] ...");
1400 register_command(cmd_ctx, NULL, "verify_ircapture", handle_verify_ircapture_command,
1401 COMMAND_ANY, "verify value captured during Capture-IR <enable|disable>");
1405 int jtag_init(struct command_context_s *cmd_ctx)
1407 int i, validate_tries = 0;
1411 if (jtag_speed == -1)
1414 if (jtag_interface && (jtag_interface[0] != 0))
1415 /* configuration var 'jtag_interface' is set, and not empty */
1416 for (i = 0; jtag_interfaces[i]; i++)
1418 if (strcmp(jtag_interface, jtag_interfaces[i]->name) == 0)
1420 jtag_device_t *device;
1421 device = jtag_devices;
1423 if (jtag_interfaces[i]->init() != ERROR_OK)
1424 return ERROR_JTAG_INIT_FAILED;
1425 jtag = jtag_interfaces[i];
1427 jtag_ir_scan_size = 0;
1428 jtag_num_devices = 0;
1429 while (device != NULL)
1431 jtag_ir_scan_size += device->ir_length;
1433 device = device->next;
1436 jtag_add_statemove(TAP_TLR);
1437 jtag_execute_queue();
1439 /* examine chain first, as this could discover the real chain layout */
1440 if (jtag_examine_chain() != ERROR_OK)
1442 ERROR("trying to validate configured JTAG chain anyway...");
1445 while (jtag_validate_chain() != ERROR_OK)
1448 if (validate_tries > 5)
1450 ERROR("Could not validate JTAG chain, exit");
1452 return ERROR_JTAG_INVALID_INTERFACE;
1461 /* no valid interface was found (i.e. the configuration option,
1462 * didn't match one of the compiled-in interfaces
1464 ERROR("No valid jtag interface found (%s)", jtag_interface);
1465 ERROR("compiled-in jtag interfaces:");
1466 for (i = 0; jtag_interfaces[i]; i++)
1468 ERROR("%i: %s", i, jtag_interfaces[i]->name);
1472 return ERROR_JTAG_INVALID_INTERFACE;
1475 int handle_interface_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1479 /* only if the configuration var isn't overwritten from cmdline */
1480 if (!jtag_interface)
1482 if (args[0] && (args[0][0] != 0))
1484 for (i=0; jtag_interfaces[i]; i++)
1486 if (strcmp(args[0], jtag_interfaces[i]->name) == 0)
1488 if (jtag_interfaces[i]->register_commands(cmd_ctx) != ERROR_OK)
1491 jtag_interface = jtag_interfaces[i]->name;
1498 /* remember the requested interface name, so we can complain about it later */
1499 jtag_interface = strdup(args[0]);
1500 DEBUG("'interface' command didn't specify a valid interface");
1506 int handle_jtag_device_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1508 jtag_device_t **last_device_p = &jtag_devices;
1512 while ((*last_device_p)->next)
1513 last_device_p = &((*last_device_p)->next);
1514 last_device_p = &((*last_device_p)->next);
1520 *last_device_p = malloc(sizeof(jtag_device_t));
1521 (*last_device_p)->ir_length = strtoul(args[0], NULL, 0);
1523 (*last_device_p)->expected = malloc((*last_device_p)->ir_length);
1524 buf_set_u32((*last_device_p)->expected, 0, (*last_device_p)->ir_length, strtoul(args[1], NULL, 0));
1525 (*last_device_p)->expected_mask = malloc((*last_device_p)->ir_length);
1526 buf_set_u32((*last_device_p)->expected_mask, 0, (*last_device_p)->ir_length, strtoul(args[2], NULL, 0));
1528 (*last_device_p)->cur_instr = malloc((*last_device_p)->ir_length);
1529 (*last_device_p)->bypass = 1;
1530 buf_set_ones((*last_device_p)->cur_instr, (*last_device_p)->ir_length);
1532 (*last_device_p)->next = NULL;
1534 jtag_register_event_callback(jtag_reset_callback, (*last_device_p));
1541 int handle_scan_chain_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1543 jtag_device_t *device = jtag_devices;
1544 int device_count = 0;
1548 u32 expected, expected_mask, cur_instr;
1549 expected = buf_get_u32(device->expected, 0, device->ir_length);
1550 expected_mask = buf_get_u32(device->expected_mask, 0, device->ir_length);
1551 cur_instr = buf_get_u32(device->cur_instr, 0, device->ir_length);
1552 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);
1553 device = device->next;
1560 int handle_reset_config_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1564 if (strcmp(args[0], "none") == 0)
1565 jtag_reset_config = RESET_NONE;
1566 else if (strcmp(args[0], "trst_only") == 0)
1567 jtag_reset_config = RESET_HAS_TRST;
1568 else if (strcmp(args[0], "srst_only") == 0)
1569 jtag_reset_config = RESET_HAS_SRST;
1570 else if (strcmp(args[0], "trst_and_srst") == 0)
1571 jtag_reset_config = RESET_TRST_AND_SRST;
1574 ERROR("invalid reset_config argument, defaulting to none");
1575 jtag_reset_config = RESET_NONE;
1576 return ERROR_INVALID_ARGUMENTS;
1582 if (strcmp(args[1], "srst_pulls_trst") == 0)
1583 jtag_reset_config |= RESET_SRST_PULLS_TRST;
1584 else if (strcmp(args[1], "trst_pulls_srst") == 0)
1585 jtag_reset_config |= RESET_TRST_PULLS_SRST;
1586 else if (strcmp(args[1], "combined") == 0)
1587 jtag_reset_config |= RESET_SRST_PULLS_TRST | RESET_TRST_PULLS_SRST;
1588 else if (strcmp(args[1], "separate") == 0)
1589 jtag_reset_config &= ~(RESET_SRST_PULLS_TRST | RESET_TRST_PULLS_SRST);
1592 ERROR("invalid reset_config argument, defaulting to none");
1593 jtag_reset_config = RESET_NONE;
1594 return ERROR_INVALID_ARGUMENTS;
1600 if (strcmp(args[2], "trst_open_drain") == 0)
1601 jtag_reset_config |= RESET_TRST_OPEN_DRAIN;
1602 else if (strcmp(args[2], "trst_push_pull") == 0)
1603 jtag_reset_config &= ~RESET_TRST_OPEN_DRAIN;
1606 ERROR("invalid reset_config argument, defaulting to none");
1607 jtag_reset_config = RESET_NONE;
1608 return ERROR_INVALID_ARGUMENTS;
1614 if (strcmp(args[3], "srst_push_pull") == 0)
1615 jtag_reset_config |= RESET_SRST_PUSH_PULL;
1616 else if (strcmp(args[3], "srst_open_drain") == 0)
1617 jtag_reset_config &= ~RESET_SRST_PUSH_PULL;
1620 ERROR("invalid reset_config argument, defaulting to none");
1621 jtag_reset_config = RESET_NONE;
1622 return ERROR_INVALID_ARGUMENTS;
1629 int handle_jtag_nsrst_delay_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1633 ERROR("jtag_nsrst_delay <ms> command takes one required argument");
1638 jtag_nsrst_delay = strtoul(args[0], NULL, 0);
1644 int handle_jtag_ntrst_delay_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1648 ERROR("jtag_ntrst_delay <ms> command takes one required argument");
1653 jtag_ntrst_delay = strtoul(args[0], NULL, 0);
1659 int handle_jtag_speed_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1662 command_print(cmd_ctx, "jtag_speed: %i", jtag_speed);
1666 /* this command can be called during CONFIG,
1667 * in which case jtag isn't initialized */
1669 jtag->speed(strtoul(args[0], NULL, 0));
1671 jtag_speed = strtoul(args[0], NULL, 0);
1677 int handle_endstate_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1679 enum tap_state state;
1683 command_print(cmd_ctx, "usage: endstate <tap_state>");
1687 for (state = 0; state < 16; state++)
1689 if (strcmp(args[0], tap_state_strings[state]) == 0)
1691 jtag_add_end_state(state);
1692 jtag_execute_queue();
1696 command_print(cmd_ctx, "current endstate: %s", tap_state_strings[end_state]);
1701 int handle_jtag_reset_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1705 char *usage = "usage: jtag_reset <trst> <srst>";
1710 command_print(cmd_ctx, usage);
1714 if (args[0][0] == '1')
1716 else if (args[0][0] == '0')
1720 command_print(cmd_ctx, usage);
1724 if (args[1][0] == '1')
1726 else if (args[1][0] == '0')
1730 command_print(cmd_ctx, usage);
1734 if ((retval = jtag_add_reset(trst, srst)) != ERROR_OK)
1738 case ERROR_JTAG_RESET_WOULD_ASSERT_TRST:
1739 command_print(cmd_ctx, "requested reset would assert trst\nif this is acceptable, use jtag_reset 1 %c", args[1][0]);
1741 case ERROR_JTAG_RESET_CANT_SRST:
1742 command_print(cmd_ctx, "can't assert srst because the current reset_config doesn't support it");
1745 command_print(cmd_ctx, "unknown error");
1748 jtag_execute_queue();
1753 int handle_runtest_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1757 command_print(cmd_ctx, "usage: runtest <num_cycles>");
1761 jtag_add_runtest(strtol(args[0], NULL, 0), -1);
1762 jtag_execute_queue();
1768 int handle_statemove_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1770 enum tap_state state;
1775 for (state = 0; state < 16; state++)
1777 if (strcmp(args[0], tap_state_strings[state]) == 0)
1784 jtag_add_statemove(state);
1785 jtag_execute_queue();
1791 int handle_irscan_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1794 scan_field_t *fields;
1796 if ((argc < 2) || (argc % 2))
1798 command_print(cmd_ctx, "usage: irscan <device> <instr> [dev2] [instr2] ...");
1802 fields = malloc(sizeof(scan_field_t) * argc / 2);
1804 for (i = 0; i < argc / 2; i++)
1806 int device = strtoul(args[i*2], NULL, 0);
1807 int field_size = jtag_get_device(device)->ir_length;
1808 fields[i].device = device;
1809 fields[i].out_value = malloc(CEIL(field_size, 8));
1810 buf_set_u32(fields[i].out_value, 0, field_size, strtoul(args[i*2+1], NULL, 0));
1811 fields[i].out_mask = NULL;
1812 fields[i].in_value = NULL;
1813 fields[i].in_check_mask = NULL;
1814 fields[i].in_handler = NULL;
1815 fields[i].in_handler_priv = NULL;
1818 jtag_add_ir_scan(argc / 2, fields, -1, NULL);
1819 jtag_execute_queue();
1821 for (i = 0; i < argc / 2; i++)
1822 free(fields[i].out_value);
1829 int handle_drscan_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1831 scan_field_t *fields;
1833 int field_count = 0;
1837 if ((argc < 2) || (argc % 2))
1839 command_print(cmd_ctx, "usage: drscan <device> <var> [dev2] [var2]");
1843 for (i = 0; i < argc; i+=2)
1845 var = get_var_by_namenum(args[i+1]);
1848 num_fields += var->num_fields;
1852 command_print(cmd_ctx, "variable %s doesn't exist", args[i+1]);
1857 fields = malloc(sizeof(scan_field_t) * num_fields);
1859 for (i = 0; i < argc; i+=2)
1861 var = get_var_by_namenum(args[i+1]);
1863 for (j = 0; j < var->num_fields; j++)
1865 fields[field_count].device = strtol(args[i], NULL, 0);
1866 fields[field_count].num_bits = var->fields[j].num_bits;
1867 fields[field_count].out_value = malloc(CEIL(var->fields[j].num_bits, 8));
1868 buf_set_u32(fields[field_count].out_value, 0, var->fields[j].num_bits, var->fields[j].value);
1869 fields[field_count].out_mask = NULL;
1870 fields[field_count].in_value = fields[field_count].out_value;
1871 fields[field_count].in_check_mask = NULL;
1872 fields[field_count].in_check_value = NULL;
1873 fields[field_count].in_handler = field_le_to_host;
1874 fields[field_count++].in_handler_priv = &(var->fields[j]);
1878 jtag_add_dr_scan(num_fields, fields, -1, NULL);
1879 jtag_execute_queue();
1881 for (i = 0; i < argc / 2; i++)
1882 free(fields[i].out_value);
1889 int handle_verify_ircapture_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1893 command_print(cmd_ctx, "verify Capture-IR is %s", (jtag_verify_capture_ir) ? "enabled": "disabled");
1897 if (strcmp(args[0], "enable") == 0)
1899 jtag_verify_capture_ir = 1;
1901 else if (strcmp(args[0], "disable") == 0)
1903 jtag_verify_capture_ir = 0;