1 /***************************************************************************
2 * Copyright (C) 2005 by Dominic Rath *
3 * Dominic.Rath@gmx.de *
5 * Copyright (C) 2007,2008 Øyvind Harboe *
6 * oyvind.harboe@zylin.com *
8 * Copyright (C) 2009 SoftPLC Corporation *
12 * Copyright (C) 2009 Zachary T Welch *
13 * zw@superlucidity.net *
15 * This program is free software; you can redistribute it and/or modify *
16 * it under the terms of the GNU General Public License as published by *
17 * the Free Software Foundation; either version 2 of the License, or *
18 * (at your option) any later version. *
20 * This program is distributed in the hope that it will be useful, *
21 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
22 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
23 * GNU General Public License for more details. *
25 * You should have received a copy of the GNU General Public License *
26 * along with this program; if not, write to the *
27 * Free Software Foundation, Inc., *
28 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
29 ***************************************************************************/
35 #include "minidriver.h"
36 #include "interface.h"
37 #include "interfaces.h"
43 static const Jim_Nvp nvp_jtag_tap_event
[] = {
44 { .value
= JTAG_TRST_ASSERTED
, .name
= "post-reset" },
45 { .value
= JTAG_TAP_EVENT_SETUP
, .name
= "setup" },
46 { .value
= JTAG_TAP_EVENT_ENABLE
, .name
= "tap-enable" },
47 { .value
= JTAG_TAP_EVENT_DISABLE
, .name
= "tap-disable" },
49 { .name
= NULL
, .value
= -1 }
52 extern struct jtag_interface
*jtag_interface
;
54 struct jtag_tap
*jtag_tap_by_jim_obj(Jim_Interp
*interp
, Jim_Obj
*o
)
56 const char *cp
= Jim_GetString(o
, NULL
);
57 struct jtag_tap
*t
= cp
? jtag_tap_by_string(cp
) : NULL
;
61 Jim_SetResult_sprintf(interp
, "Tap '%s' could not be found", cp
);
65 static bool scan_is_safe(tap_state_t state
)
79 static int Jim_Command_drscan(Jim_Interp
*interp
, int argc
, Jim_Obj
*const *args
)
82 struct scan_field
*fields
;
91 * args[3] = hex string
92 * ... repeat num bits and hex string ...
95 * args[N-2] = "-endstate"
96 * args[N-1] = statename
98 if ((argc
< 4) || ((argc
% 2) != 0))
100 Jim_WrongNumArgs(interp
, 1, args
, "wrong arguments");
106 script_debug(interp
, "drscan", argc
, args
);
108 /* validate arguments as numbers */
110 for (i
= 2; i
< argc
; i
+= 2)
115 e
= Jim_GetLong(interp
, args
[i
], &bits
);
116 /* If valid - try next arg */
121 /* Not valid.. are we at the end? */
122 if (((i
+ 2) != argc
)) {
123 /* nope, then error */
127 /* it could be: "-endstate FOO"
128 * e.g. DRPAUSE so we can issue more instructions
129 * before entering RUN/IDLE and executing them.
132 /* get arg as a string. */
133 cp
= Jim_GetString(args
[i
], NULL
);
134 /* is it the magic? */
135 if (0 == strcmp("-endstate", cp
)) {
136 /* is the statename valid? */
137 cp
= Jim_GetString(args
[i
+ 1], NULL
);
139 /* see if it is a valid state name */
140 endstate
= tap_state_by_name(cp
);
142 /* update the error message */
143 Jim_SetResult_sprintf(interp
,"endstate: %s invalid", cp
);
145 if (!scan_is_safe(endstate
))
146 LOG_WARNING("drscan with unsafe "
147 "endstate \"%s\"", cp
);
149 /* valid - so clear the error */
151 /* and remove the last 2 args */
156 /* Still an error? */
158 return e
; /* too bad */
160 } /* validate args */
162 tap
= jtag_tap_by_jim_obj(interp
, args
[1]);
167 num_fields
= (argc
-2)/2;
168 fields
= malloc(sizeof(struct scan_field
) * num_fields
);
169 for (i
= 2; i
< argc
; i
+= 2)
175 Jim_GetLong(interp
, args
[i
], &bits
);
176 str
= Jim_GetString(args
[i
+ 1], &len
);
178 fields
[field_count
].tap
= tap
;
179 fields
[field_count
].num_bits
= bits
;
180 fields
[field_count
].out_value
= malloc(DIV_ROUND_UP(bits
, 8));
181 str_to_buf(str
, len
, fields
[field_count
].out_value
, bits
, 0);
182 fields
[field_count
].in_value
= fields
[field_count
].out_value
;
186 jtag_add_dr_scan(num_fields
, fields
, endstate
);
188 retval
= jtag_execute_queue();
189 if (retval
!= ERROR_OK
)
191 Jim_SetResultString(interp
, "drscan: jtag execute failed",-1);
196 Jim_Obj
*list
= Jim_NewListObj(interp
, NULL
, 0);
197 for (i
= 2; i
< argc
; i
+= 2)
202 Jim_GetLong(interp
, args
[i
], &bits
);
203 str
= buf_to_str(fields
[field_count
].in_value
, bits
, 16);
204 free(fields
[field_count
].out_value
);
206 Jim_ListAppendElement(interp
, list
, Jim_NewStringObj(interp
, str
, strlen(str
)));
211 Jim_SetResult(interp
, list
);
219 static int Jim_Command_pathmove(Jim_Interp
*interp
, int argc
, Jim_Obj
*const *args
)
221 tap_state_t states
[8];
223 if ((argc
< 2) || ((size_t)argc
> (ARRAY_SIZE(states
) + 1)))
225 Jim_WrongNumArgs(interp
, 1, args
, "wrong arguments");
229 script_debug(interp
, "pathmove", argc
, args
);
232 for (i
= 0; i
< argc
-1; i
++)
235 cp
= Jim_GetString(args
[i
+ 1], NULL
);
236 states
[i
] = tap_state_by_name(cp
);
239 /* update the error message */
240 Jim_SetResult_sprintf(interp
,"endstate: %s invalid", cp
);
245 if ((jtag_add_statemove(states
[0]) != ERROR_OK
) || (jtag_execute_queue()!= ERROR_OK
))
247 Jim_SetResultString(interp
, "pathmove: jtag execute failed",-1);
251 jtag_add_pathmove(argc
-2, states
+ 1);
253 if (jtag_execute_queue()!= ERROR_OK
)
255 Jim_SetResultString(interp
, "pathmove: failed",-1);
263 static int Jim_Command_flush_count(Jim_Interp
*interp
, int argc
, Jim_Obj
*const *args
)
265 script_debug(interp
, "flush_count", argc
, args
);
267 Jim_SetResult(interp
, Jim_NewIntObj(interp
, jtag_get_flush_queue_count()));
272 static const struct command_registration jtag_command_handlers_to_move
[] = {
275 .mode
= COMMAND_EXEC
,
276 .jim_handler
= &Jim_Command_drscan
,
277 .help
= "execute DR scan <device> "
278 "<num_bits> <value> <num_bits1> <value2> ...",
281 .name
= "flush_count",
282 .mode
= COMMAND_EXEC
,
283 .jim_handler
= &Jim_Command_flush_count
,
284 .help
= "returns number of times the JTAG queue has been flushed",
288 .mode
= COMMAND_EXEC
,
289 .jim_handler
= &Jim_Command_pathmove
,
290 .usage
= "<state1>,<state2>,<state3>... ",
291 .help
= "move JTAG to state1 then to state2, state3, etc.",
293 COMMAND_REGISTRATION_DONE
297 enum jtag_tap_cfg_param
{
301 static Jim_Nvp nvp_config_opts
[] = {
302 { .name
= "-event", .value
= JCFG_EVENT
},
304 { .name
= NULL
, .value
= -1 }
307 static int jtag_tap_configure_event(Jim_GetOptInfo
*goi
, struct jtag_tap
* tap
)
311 Jim_WrongNumArgs(goi
->interp
, goi
->argc
, goi
->argv
, "-event <event-name> ...");
316 int e
= Jim_GetOpt_Nvp(goi
, nvp_jtag_tap_event
, &n
);
319 Jim_GetOpt_NvpUnknown(goi
, nvp_jtag_tap_event
, 1);
323 if (goi
->isconfigure
) {
324 if (goi
->argc
!= 1) {
325 Jim_WrongNumArgs(goi
->interp
, goi
->argc
, goi
->argv
, "-event <event-name> <event-body>");
329 if (goi
->argc
!= 0) {
330 Jim_WrongNumArgs(goi
->interp
, goi
->argc
, goi
->argv
, "-event <event-name>");
335 struct jtag_tap_event_action
*jteap
= tap
->event_action
;
336 /* replace existing event body */
340 if (jteap
->event
== (enum jtag_event
)n
->value
)
348 Jim_SetEmptyResult(goi
->interp
);
350 if (goi
->isconfigure
)
353 jteap
= calloc(1, sizeof(*jteap
));
354 else if (NULL
!= jteap
->body
)
355 Jim_DecrRefCount(goi
->interp
, jteap
->body
);
357 jteap
->interp
= goi
->interp
;
358 jteap
->event
= n
->value
;
361 Jim_GetOpt_Obj(goi
, &o
);
362 jteap
->body
= Jim_DuplicateObj(goi
->interp
, o
);
363 Jim_IncrRefCount(jteap
->body
);
367 /* add to head of event list */
368 jteap
->next
= tap
->event_action
;
369 tap
->event_action
= jteap
;
374 jteap
->interp
= goi
->interp
;
375 Jim_SetResult(goi
->interp
,
376 Jim_DuplicateObj(goi
->interp
, jteap
->body
));
381 static int jtag_tap_configure_cmd(Jim_GetOptInfo
*goi
, struct jtag_tap
* tap
)
383 /* parse config or cget options */
384 while (goi
->argc
> 0)
386 Jim_SetEmptyResult (goi
->interp
);
389 int e
= Jim_GetOpt_Nvp(goi
, nvp_config_opts
, &n
);
392 Jim_GetOpt_NvpUnknown(goi
, nvp_config_opts
, 0);
399 e
= jtag_tap_configure_event(goi
, tap
);
404 Jim_SetResult_sprintf(goi
->interp
, "unknown event: %s", n
->name
);
412 static int is_bad_irval(int ir_length
, jim_wide w
)
422 static int jim_newtap_expected_id(Jim_Nvp
*n
, Jim_GetOptInfo
*goi
,
423 struct jtag_tap
*pTap
)
426 int e
= Jim_GetOpt_Wide(goi
, &w
);
428 Jim_SetResult_sprintf(goi
->interp
, "option: %s bad parameter", n
->name
);
432 unsigned expected_len
= sizeof(uint32_t) * pTap
->expected_ids_cnt
;
433 uint32_t *new_expected_ids
= malloc(expected_len
+ sizeof(uint32_t));
434 if (new_expected_ids
== NULL
)
436 Jim_SetResult_sprintf(goi
->interp
, "no memory");
440 memcpy(new_expected_ids
, pTap
->expected_ids
, expected_len
);
442 new_expected_ids
[pTap
->expected_ids_cnt
] = w
;
444 free(pTap
->expected_ids
);
445 pTap
->expected_ids
= new_expected_ids
;
446 pTap
->expected_ids_cnt
++;
451 #define NTAP_OPT_IRLEN 0
452 #define NTAP_OPT_IRMASK 1
453 #define NTAP_OPT_IRCAPTURE 2
454 #define NTAP_OPT_ENABLED 3
455 #define NTAP_OPT_DISABLED 4
456 #define NTAP_OPT_EXPECTED_ID 5
458 static int jim_newtap_ir_param(Jim_Nvp
*n
, Jim_GetOptInfo
*goi
,
459 struct jtag_tap
*pTap
)
462 int e
= Jim_GetOpt_Wide(goi
, &w
);
465 Jim_SetResult_sprintf(goi
->interp
,
466 "option: %s bad parameter", n
->name
);
467 free((void *)pTap
->dotted_name
);
472 if (w
> (jim_wide
) (8 * sizeof(pTap
->ir_capture_value
)))
474 LOG_WARNING("%s: huge IR length %d",
475 pTap
->dotted_name
, (int) w
);
479 case NTAP_OPT_IRMASK
:
480 if (is_bad_irval(pTap
->ir_length
, w
))
482 LOG_ERROR("%s: IR mask %x too big",
488 LOG_WARNING("%s: nonstandard IR mask", pTap
->dotted_name
);
489 pTap
->ir_capture_mask
= w
;
491 case NTAP_OPT_IRCAPTURE
:
492 if (is_bad_irval(pTap
->ir_length
, w
))
494 LOG_ERROR("%s: IR capture %x too big",
495 pTap
->dotted_name
, (int) w
);
499 LOG_WARNING("%s: nonstandard IR value",
501 pTap
->ir_capture_value
= w
;
509 static int jim_newtap_cmd(Jim_GetOptInfo
*goi
)
511 struct jtag_tap
*pTap
;
516 const Jim_Nvp opts
[] = {
517 { .name
= "-irlen" , .value
= NTAP_OPT_IRLEN
},
518 { .name
= "-irmask" , .value
= NTAP_OPT_IRMASK
},
519 { .name
= "-ircapture" , .value
= NTAP_OPT_IRCAPTURE
},
520 { .name
= "-enable" , .value
= NTAP_OPT_ENABLED
},
521 { .name
= "-disable" , .value
= NTAP_OPT_DISABLED
},
522 { .name
= "-expected-id" , .value
= NTAP_OPT_EXPECTED_ID
},
523 { .name
= NULL
, .value
= -1 },
526 pTap
= calloc(1, sizeof(struct jtag_tap
));
528 Jim_SetResult_sprintf(goi
->interp
, "no memory");
533 * we expect CHIP + TAP + OPTIONS
536 Jim_SetResult_sprintf(goi
->interp
, "Missing CHIP TAP OPTIONS ....");
540 Jim_GetOpt_String(goi
, &cp
, NULL
);
541 pTap
->chip
= strdup(cp
);
543 Jim_GetOpt_String(goi
, &cp
, NULL
);
544 pTap
->tapname
= strdup(cp
);
546 /* name + dot + name + null */
547 x
= strlen(pTap
->chip
) + 1 + strlen(pTap
->tapname
) + 1;
549 sprintf(cp
, "%s.%s", pTap
->chip
, pTap
->tapname
);
550 pTap
->dotted_name
= cp
;
552 LOG_DEBUG("Creating New Tap, Chip: %s, Tap: %s, Dotted: %s, %d params",
553 pTap
->chip
, pTap
->tapname
, pTap
->dotted_name
, goi
->argc
);
555 /* IEEE specifies that the two LSBs of an IR scan are 01, so make
556 * that the default. The "-irlen" and "-irmask" options are only
557 * needed to cope with nonstandard TAPs, or to specify more bits.
559 pTap
->ir_capture_mask
= 0x03;
560 pTap
->ir_capture_value
= 0x01;
563 e
= Jim_GetOpt_Nvp(goi
, opts
, &n
);
565 Jim_GetOpt_NvpUnknown(goi
, opts
, 0);
566 free((void *)pTap
->dotted_name
);
570 LOG_DEBUG("Processing option: %s", n
->name
);
572 case NTAP_OPT_ENABLED
:
573 pTap
->disabled_after_reset
= false;
575 case NTAP_OPT_DISABLED
:
576 pTap
->disabled_after_reset
= true;
578 case NTAP_OPT_EXPECTED_ID
:
579 e
= jim_newtap_expected_id(n
, goi
, pTap
);
582 free((void *)pTap
->dotted_name
);
588 case NTAP_OPT_IRMASK
:
589 case NTAP_OPT_IRCAPTURE
:
590 e
= jim_newtap_ir_param(n
, goi
, pTap
);
593 free((void *)pTap
->dotted_name
);
598 } /* switch (n->value) */
599 } /* while (goi->argc) */
601 /* default is enabled-after-reset */
602 pTap
->enabled
= !pTap
->disabled_after_reset
;
604 /* Did all the required option bits get cleared? */
605 if (pTap
->ir_length
!= 0)
611 Jim_SetResult_sprintf(goi
->interp
,
612 "newtap: %s missing IR length",
618 static void jtag_tap_handle_event(struct jtag_tap
*tap
, enum jtag_event e
)
620 struct jtag_tap_event_action
* jteap
;
622 for (jteap
= tap
->event_action
; jteap
!= NULL
; jteap
= jteap
->next
)
624 if (jteap
->event
!= e
)
627 Jim_Nvp
*nvp
= Jim_Nvp_value2name_simple(nvp_jtag_tap_event
, e
);
628 LOG_DEBUG("JTAG tap: %s event: %d (%s)\n\taction: %s",
629 tap
->dotted_name
, e
, nvp
->name
,
630 Jim_GetString(jteap
->body
, NULL
));
632 if (Jim_EvalObj(jteap
->interp
, jteap
->body
) != JIM_OK
)
634 Jim_PrintErrorMessage(jteap
->interp
);
640 case JTAG_TAP_EVENT_ENABLE
:
641 case JTAG_TAP_EVENT_DISABLE
:
642 /* NOTE: we currently assume the handlers
643 * can't fail. Right here is where we should
644 * really be verifying the scan chains ...
646 tap
->enabled
= (e
== JTAG_TAP_EVENT_ENABLE
);
647 LOG_INFO("JTAG tap: %s %s", tap
->dotted_name
,
648 tap
->enabled
? "enabled" : "disabled");
656 static int jim_jtag_interface(Jim_Interp
*interp
, int argc
, Jim_Obj
*const *argv
)
659 Jim_GetOpt_Setup(&goi
, interp
, argc
-1, argv
+ 1);
661 /* return the name of the interface */
662 /* TCL code might need to know the exact type... */
663 /* FUTURE: we allow this as a means to "set" the interface. */
665 Jim_WrongNumArgs(goi
.interp
, 1, goi
.argv
-1, "(no params)");
668 const char *name
= jtag_interface
? jtag_interface
->name
: NULL
;
669 Jim_SetResultString(goi
.interp
, name
? : "undefined", -1);
673 static int jim_jtag_arp_init(Jim_Interp
*interp
, int argc
, Jim_Obj
*const *argv
)
676 Jim_GetOpt_Setup(&goi
, interp
, argc
-1, argv
+ 1);
678 Jim_WrongNumArgs(goi
.interp
, 1, goi
.argv
-1, "(no params)");
681 struct command_context
*context
= Jim_GetAssocData(interp
, "context");
682 int e
= jtag_init_inner(context
);
684 Jim_SetResult_sprintf(goi
.interp
, "error: %d", e
);
690 static int jim_jtag_arp_init_reset(Jim_Interp
*interp
, int argc
, Jim_Obj
*const *argv
)
693 Jim_GetOpt_Setup(&goi
, interp
, argc
-1, argv
+ 1);
695 Jim_WrongNumArgs(goi
.interp
, 1, goi
.argv
-1, "(no params)");
698 struct command_context
*context
= Jim_GetAssocData(interp
, "context");
699 int e
= jtag_init_reset(context
);
701 Jim_SetResult_sprintf(goi
.interp
, "error: %d", e
);
707 static int jim_jtag_newtap(Jim_Interp
*interp
, int argc
, Jim_Obj
*const *argv
)
710 Jim_GetOpt_Setup(&goi
, interp
, argc
-1, argv
+ 1);
711 return jim_newtap_cmd(&goi
);
714 static bool jtag_tap_enable(struct jtag_tap
*t
)
718 jtag_tap_handle_event(t
, JTAG_TAP_EVENT_ENABLE
);
722 /* FIXME add JTAG sanity checks, w/o TLR
723 * - scan chain length grew by one (this)
724 * - IDs and IR lengths are as expected
726 jtag_call_event_callbacks(JTAG_TAP_EVENT_ENABLE
);
729 static bool jtag_tap_disable(struct jtag_tap
*t
)
733 jtag_tap_handle_event(t
, JTAG_TAP_EVENT_DISABLE
);
737 /* FIXME add JTAG sanity checks, w/o TLR
738 * - scan chain length shrank by one (this)
739 * - IDs and IR lengths are as expected
741 jtag_call_event_callbacks(JTAG_TAP_EVENT_DISABLE
);
745 static int jim_jtag_tap_enabler(Jim_Interp
*interp
, int argc
, Jim_Obj
*const *argv
)
747 const char *cmd_name
= Jim_GetString(argv
[0], NULL
);
749 Jim_GetOpt_Setup(&goi
, interp
, argc
-1, argv
+ 1);
751 Jim_SetResult_sprintf(goi
.interp
, "usage: %s <name>", cmd_name
);
757 t
= jtag_tap_by_jim_obj(goi
.interp
, goi
.argv
[0]);
761 if (strcasecmp(cmd_name
, "tapisenabled") == 0) {
762 // do nothing, just return the value
763 } else if (strcasecmp(cmd_name
, "tapenable") == 0) {
764 if (!jtag_tap_enable(t
))
765 LOG_WARNING("failed to disable tap");
766 } else if (strcasecmp(cmd_name
, "tapdisable") == 0) {
767 if (!jtag_tap_disable(t
))
768 LOG_WARNING("failed to disable tap");
770 LOG_ERROR("command '%s' unknown", cmd_name
);
774 Jim_SetResult(goi
.interp
, Jim_NewIntObj(goi
.interp
, e
));
778 static int jim_jtag_configure(Jim_Interp
*interp
, int argc
, Jim_Obj
*const *argv
)
780 const char *cmd_name
= Jim_GetString(argv
[0], NULL
);
782 Jim_GetOpt_Setup(&goi
, interp
, argc
-1, argv
+ 1);
783 goi
.isconfigure
= !strcmp(cmd_name
, "configure");
784 if (goi
.argc
< 2 + goi
.isconfigure
) {
785 Jim_WrongNumArgs(goi
.interp
, 0, NULL
,
786 "<tap_name> <attribute> ...");
793 Jim_GetOpt_Obj(&goi
, &o
);
794 t
= jtag_tap_by_jim_obj(goi
.interp
, o
);
799 return jtag_tap_configure_cmd(&goi
, t
);
802 static int jim_jtag_names(Jim_Interp
*interp
, int argc
, Jim_Obj
*const *argv
)
805 Jim_GetOpt_Setup(&goi
, interp
, argc
-1, argv
+ 1);
807 Jim_WrongNumArgs(goi
.interp
, 1, goi
.argv
, "Too many parameters");
810 Jim_SetResult(goi
.interp
, Jim_NewListObj(goi
.interp
, NULL
, 0));
811 struct jtag_tap
*tap
;
813 for (tap
= jtag_all_taps(); tap
; tap
= tap
->next_tap
) {
814 Jim_ListAppendElement(goi
.interp
,
815 Jim_GetResult(goi
.interp
),
816 Jim_NewStringObj(goi
.interp
,
817 tap
->dotted_name
, -1));
822 COMMAND_HANDLER(handle_jtag_init_command
)
825 return ERROR_COMMAND_SYNTAX_ERROR
;
827 static bool jtag_initialized
= false;
828 if (jtag_initialized
)
830 LOG_INFO("'jtag init' has already been called");
833 jtag_initialized
= true;
835 LOG_DEBUG("Initializing jtag devices...");
836 return jtag_init(CMD_CTX
);
839 static const struct command_registration jtag_subcommand_handlers
[] = {
843 .handler
= &handle_jtag_init_command
,
844 .help
= "initialize jtag scan chain",
849 .jim_handler
= &jim_jtag_interface
,
850 .help
= "Returns the selected interface",
855 .jim_handler
= &jim_jtag_arp_init
,
858 .name
= "arp_init-reset",
860 .jim_handler
= &jim_jtag_arp_init_reset
,
864 .mode
= COMMAND_CONFIG
,
865 .jim_handler
= &jim_jtag_newtap
,
866 .help
= "Create a new TAP instance",
867 .usage
= "<name> <type> -irlen <count> [-ircapture <count>] "
868 "[-irmask <count>] [-enable|-disable]",
871 .name
= "tapisenabled",
872 .mode
= COMMAND_EXEC
,
873 .jim_handler
= &jim_jtag_tap_enabler
,
874 .help
= "Returns a integer indicating TAP state (0/1)",
879 .mode
= COMMAND_EXEC
,
880 .jim_handler
= &jim_jtag_tap_enabler
,
881 .help
= "Enable the specified TAP",
885 .name
= "tapdisable",
886 .mode
= COMMAND_EXEC
,
887 .jim_handler
= &jim_jtag_tap_enabler
,
888 .help
= "Enable the specified TAP",
893 .mode
= COMMAND_EXEC
,
894 .jim_handler
= &jim_jtag_configure
,
895 .help
= "Enable the specified TAP",
896 .usage
= "<name> [<key> <value> ...]",
900 .mode
= COMMAND_EXEC
,
901 .jim_handler
= &jim_jtag_configure
,
902 .help
= "Enable the specified TAP",
903 .usage
= "<name> [<key> <value> ...]",
908 .jim_handler
= &jim_jtag_names
,
909 .help
= "Returns list of all JTAG tap names",
912 .chain
= jtag_command_handlers_to_move
,
914 COMMAND_REGISTRATION_DONE
917 void jtag_notify_event(enum jtag_event event
)
919 struct jtag_tap
*tap
;
921 for (tap
= jtag_all_taps(); tap
; tap
= tap
->next_tap
)
922 jtag_tap_handle_event(tap
, event
);
926 static int default_khz(int khz
, int *jtag_speed
)
928 LOG_ERROR("Translation from khz to jtag_speed not implemented");
932 static int default_speed_div(int speed
, int *khz
)
934 LOG_ERROR("Translation from jtag_speed to khz not implemented");
938 static int default_power_dropout(int *dropout
)
940 *dropout
= 0; /* by default we can't detect power dropout */
944 static int default_srst_asserted(int *srst_asserted
)
946 *srst_asserted
= 0; /* by default we can't detect srst asserted */
950 COMMAND_HANDLER(handle_interface_list_command
)
952 if (strcmp(CMD_NAME
, "interface_list") == 0 && CMD_ARGC
> 0)
953 return ERROR_COMMAND_SYNTAX_ERROR
;
955 command_print(CMD_CTX
, "The following JTAG interfaces are available:");
956 for (unsigned i
= 0; NULL
!= jtag_interfaces
[i
]; i
++)
958 const char *name
= jtag_interfaces
[i
]->name
;
959 command_print(CMD_CTX
, "%u: %s", i
+ 1, name
);
965 COMMAND_HANDLER(handle_interface_command
)
967 /* check whether the interface is already configured */
970 LOG_WARNING("Interface already configured, ignoring");
974 /* interface name is a mandatory argument */
975 if (CMD_ARGC
!= 1 || CMD_ARGV
[0][0] == '\0')
976 return ERROR_COMMAND_SYNTAX_ERROR
;
978 for (unsigned i
= 0; NULL
!= jtag_interfaces
[i
]; i
++)
980 if (strcmp(CMD_ARGV
[0], jtag_interfaces
[i
]->name
) != 0)
983 if (NULL
!= jtag_interfaces
[i
]->commands
)
985 int retval
= register_commands(CMD_CTX
, NULL
,
986 jtag_interfaces
[i
]->commands
);
987 if (ERROR_OK
!= retval
)
991 jtag_interface
= jtag_interfaces
[i
];
993 if (jtag_interface
->khz
== NULL
)
994 jtag_interface
->khz
= default_khz
;
995 if (jtag_interface
->speed_div
== NULL
)
996 jtag_interface
->speed_div
= default_speed_div
;
997 if (jtag_interface
->power_dropout
== NULL
)
998 jtag_interface
->power_dropout
= default_power_dropout
;
999 if (jtag_interface
->srst_asserted
== NULL
)
1000 jtag_interface
->srst_asserted
= default_srst_asserted
;
1005 /* no valid interface was found (i.e. the configuration option,
1006 * didn't match one of the compiled-in interfaces
1008 LOG_ERROR("The specified JTAG interface was not found (%s)", CMD_ARGV
[0]);
1009 CALL_COMMAND_HANDLER(handle_interface_list_command
);
1010 return ERROR_JTAG_INVALID_INTERFACE
;
1013 COMMAND_HANDLER(handle_scan_chain_command
)
1015 struct jtag_tap
*tap
;
1017 tap
= jtag_all_taps();
1018 command_print(CMD_CTX
, " TapName | Enabled | IdCode Expected IrLen IrCap IrMask Instr ");
1019 command_print(CMD_CTX
, "---|--------------------|---------|------------|------------|------|------|------|---------");
1022 uint32_t expected
, expected_mask
, cur_instr
, ii
;
1023 expected
= buf_get_u32(tap
->expected
, 0, tap
->ir_length
);
1024 expected_mask
= buf_get_u32(tap
->expected_mask
, 0, tap
->ir_length
);
1025 cur_instr
= buf_get_u32(tap
->cur_instr
, 0, tap
->ir_length
);
1027 command_print(CMD_CTX
,
1028 "%2d | %-18s | %c | 0x%08x | 0x%08x | 0x%02x | 0x%02x | 0x%02x | 0x%02x",
1029 tap
->abs_chain_position
,
1031 tap
->enabled
? 'Y' : 'n',
1032 (unsigned int)(tap
->idcode
),
1033 (unsigned int)(tap
->expected_ids_cnt
> 0 ? tap
->expected_ids
[0] : 0),
1034 (unsigned int)(tap
->ir_length
),
1035 (unsigned int)(expected
),
1036 (unsigned int)(expected_mask
),
1037 (unsigned int)(cur_instr
));
1039 for (ii
= 1; ii
< tap
->expected_ids_cnt
; ii
++) {
1040 command_print(CMD_CTX
, " | | | | 0x%08x | | | | ",
1041 (unsigned int)(tap
->expected_ids
[ii
]));
1044 tap
= tap
->next_tap
;
1050 COMMAND_HANDLER(handle_reset_config_command
)
1055 /* Original versions cared about the order of these tokens:
1056 * reset_config signals [combination [trst_type [srst_type]]]
1057 * They also clobbered the previous configuration even on error.
1059 * Here we don't care about the order, and only change values
1060 * which have been explicitly specified.
1062 for (; CMD_ARGC
; CMD_ARGC
--, CMD_ARGV
++) {
1067 m
= RESET_SRST_NO_GATING
;
1068 if (strcmp(*CMD_ARGV
, "srst_gates_jtag") == 0)
1069 /* default: don't use JTAG while SRST asserted */;
1070 else if (strcmp(*CMD_ARGV
, "srst_nogate") == 0)
1071 tmp
= RESET_SRST_NO_GATING
;
1075 LOG_ERROR("extra reset_config %s spec (%s)",
1076 "gating", *CMD_ARGV
);
1077 return ERROR_INVALID_ARGUMENTS
;
1083 m
= RESET_HAS_TRST
| RESET_HAS_SRST
;
1084 if (strcmp(*CMD_ARGV
, "none") == 0)
1086 else if (strcmp(*CMD_ARGV
, "trst_only") == 0)
1087 tmp
= RESET_HAS_TRST
;
1088 else if (strcmp(*CMD_ARGV
, "srst_only") == 0)
1089 tmp
= RESET_HAS_SRST
;
1090 else if (strcmp(*CMD_ARGV
, "trst_and_srst") == 0)
1091 tmp
= RESET_HAS_TRST
| RESET_HAS_SRST
;
1095 LOG_ERROR("extra reset_config %s spec (%s)",
1096 "signal", *CMD_ARGV
);
1097 return ERROR_INVALID_ARGUMENTS
;
1102 /* combination (options for broken wiring) */
1103 m
= RESET_SRST_PULLS_TRST
| RESET_TRST_PULLS_SRST
;
1104 if (strcmp(*CMD_ARGV
, "separate") == 0)
1105 /* separate reset lines - default */;
1106 else if (strcmp(*CMD_ARGV
, "srst_pulls_trst") == 0)
1107 tmp
|= RESET_SRST_PULLS_TRST
;
1108 else if (strcmp(*CMD_ARGV
, "trst_pulls_srst") == 0)
1109 tmp
|= RESET_TRST_PULLS_SRST
;
1110 else if (strcmp(*CMD_ARGV
, "combined") == 0)
1111 tmp
|= RESET_SRST_PULLS_TRST
| RESET_TRST_PULLS_SRST
;
1115 LOG_ERROR("extra reset_config %s spec (%s)",
1116 "combination", *CMD_ARGV
);
1117 return ERROR_INVALID_ARGUMENTS
;
1122 /* trst_type (NOP without HAS_TRST) */
1123 m
= RESET_TRST_OPEN_DRAIN
;
1124 if (strcmp(*CMD_ARGV
, "trst_open_drain") == 0)
1125 tmp
|= RESET_TRST_OPEN_DRAIN
;
1126 else if (strcmp(*CMD_ARGV
, "trst_push_pull") == 0)
1127 /* push/pull from adapter - default */;
1131 LOG_ERROR("extra reset_config %s spec (%s)",
1132 "trst_type", *CMD_ARGV
);
1133 return ERROR_INVALID_ARGUMENTS
;
1138 /* srst_type (NOP without HAS_SRST) */
1139 m
|= RESET_SRST_PUSH_PULL
;
1140 if (strcmp(*CMD_ARGV
, "srst_push_pull") == 0)
1141 tmp
|= RESET_SRST_PUSH_PULL
;
1142 else if (strcmp(*CMD_ARGV
, "srst_open_drain") == 0)
1143 /* open drain from adapter - default */;
1147 LOG_ERROR("extra reset_config %s spec (%s)",
1148 "srst_type", *CMD_ARGV
);
1149 return ERROR_INVALID_ARGUMENTS
;
1154 /* caller provided nonsense; fail */
1155 LOG_ERROR("unknown reset_config flag (%s)", *CMD_ARGV
);
1156 return ERROR_INVALID_ARGUMENTS
;
1159 /* Remember the bits which were specified (mask)
1160 * and their new values (new_cfg).
1166 /* clear previous values of those bits, save new values */
1168 int old_cfg
= jtag_get_reset_config();
1172 jtag_set_reset_config(new_cfg
);
1174 new_cfg
= jtag_get_reset_config();
1178 * Display the (now-)current reset mode
1182 /* minimal JTAG has neither SRST nor TRST (so that's the default) */
1183 switch (new_cfg
& (RESET_HAS_TRST
| RESET_HAS_SRST
)) {
1184 case RESET_HAS_SRST
:
1185 modes
[0] = "srst_only";
1187 case RESET_HAS_TRST
:
1188 modes
[0] = "trst_only";
1190 case RESET_TRST_AND_SRST
:
1191 modes
[0] = "trst_and_srst";
1198 /* normally SRST and TRST are decoupled; but bugs happen ... */
1199 switch (new_cfg
& (RESET_SRST_PULLS_TRST
| RESET_TRST_PULLS_SRST
)) {
1200 case RESET_SRST_PULLS_TRST
:
1201 modes
[1] = "srst_pulls_trst";
1203 case RESET_TRST_PULLS_SRST
:
1204 modes
[1] = "trst_pulls_srst";
1206 case RESET_SRST_PULLS_TRST
| RESET_TRST_PULLS_SRST
:
1207 modes
[1] = "combined";
1210 modes
[1] = "separate";
1214 /* TRST-less connectors include Altera, Xilinx, and minimal JTAG */
1215 if (new_cfg
& RESET_HAS_TRST
) {
1216 if (new_cfg
& RESET_TRST_OPEN_DRAIN
)
1217 modes
[3] = " trst_open_drain";
1219 modes
[3] = " trst_push_pull";
1223 /* SRST-less connectors include TI-14, Xilinx, and minimal JTAG */
1224 if (new_cfg
& RESET_HAS_SRST
) {
1225 if (new_cfg
& RESET_SRST_NO_GATING
)
1226 modes
[2] = " srst_nogate";
1228 modes
[2] = " srst_gates_jtag";
1230 if (new_cfg
& RESET_SRST_PUSH_PULL
)
1231 modes
[4] = " srst_push_pull";
1233 modes
[4] = " srst_open_drain";
1239 command_print(CMD_CTX
, "%s %s%s%s%s",
1241 modes
[2], modes
[3], modes
[4]);
1246 COMMAND_HANDLER(handle_jtag_nsrst_delay_command
)
1249 return ERROR_COMMAND_SYNTAX_ERROR
;
1253 COMMAND_PARSE_NUMBER(uint
, CMD_ARGV
[0], delay
);
1255 jtag_set_nsrst_delay(delay
);
1257 command_print(CMD_CTX
, "jtag_nsrst_delay: %u", jtag_get_nsrst_delay());
1261 COMMAND_HANDLER(handle_jtag_ntrst_delay_command
)
1264 return ERROR_COMMAND_SYNTAX_ERROR
;
1268 COMMAND_PARSE_NUMBER(uint
, CMD_ARGV
[0], delay
);
1270 jtag_set_ntrst_delay(delay
);
1272 command_print(CMD_CTX
, "jtag_ntrst_delay: %u", jtag_get_ntrst_delay());
1276 COMMAND_HANDLER(handle_jtag_nsrst_assert_width_command
)
1279 return ERROR_COMMAND_SYNTAX_ERROR
;
1283 COMMAND_PARSE_NUMBER(uint
, CMD_ARGV
[0], delay
);
1285 jtag_set_nsrst_assert_width(delay
);
1287 command_print(CMD_CTX
, "jtag_nsrst_assert_width: %u", jtag_get_nsrst_assert_width());
1291 COMMAND_HANDLER(handle_jtag_ntrst_assert_width_command
)
1294 return ERROR_COMMAND_SYNTAX_ERROR
;
1298 COMMAND_PARSE_NUMBER(uint
, CMD_ARGV
[0], delay
);
1300 jtag_set_ntrst_assert_width(delay
);
1302 command_print(CMD_CTX
, "jtag_ntrst_assert_width: %u", jtag_get_ntrst_assert_width());
1306 COMMAND_HANDLER(handle_jtag_khz_command
)
1309 return ERROR_COMMAND_SYNTAX_ERROR
;
1311 int retval
= ERROR_OK
;
1315 COMMAND_PARSE_NUMBER(uint
, CMD_ARGV
[0], khz
);
1317 retval
= jtag_config_khz(khz
);
1318 if (ERROR_OK
!= retval
)
1322 int cur_speed
= jtag_get_speed_khz();
1323 retval
= jtag_get_speed_readable(&cur_speed
);
1324 if (ERROR_OK
!= retval
)
1328 command_print(CMD_CTX
, "%d kHz", cur_speed
);
1330 command_print(CMD_CTX
, "RCLK - adaptive");
1335 COMMAND_HANDLER(handle_jtag_rclk_command
)
1338 return ERROR_COMMAND_SYNTAX_ERROR
;
1340 int retval
= ERROR_OK
;
1344 COMMAND_PARSE_NUMBER(uint
, CMD_ARGV
[0], khz
);
1346 retval
= jtag_config_rclk(khz
);
1347 if (ERROR_OK
!= retval
)
1351 int cur_khz
= jtag_get_speed_khz();
1352 retval
= jtag_get_speed_readable(&cur_khz
);
1353 if (ERROR_OK
!= retval
)
1357 command_print(CMD_CTX
, "RCLK not supported - fallback to %d kHz", cur_khz
);
1359 command_print(CMD_CTX
, "RCLK - adaptive");
1364 COMMAND_HANDLER(handle_jtag_reset_command
)
1367 return ERROR_COMMAND_SYNTAX_ERROR
;
1370 if (CMD_ARGV
[0][0] == '1')
1372 else if (CMD_ARGV
[0][0] == '0')
1375 return ERROR_COMMAND_SYNTAX_ERROR
;
1378 if (CMD_ARGV
[1][0] == '1')
1380 else if (CMD_ARGV
[1][0] == '0')
1383 return ERROR_COMMAND_SYNTAX_ERROR
;
1385 if (jtag_interface_init(CMD_CTX
) != ERROR_OK
)
1386 return ERROR_JTAG_INIT_FAILED
;
1388 jtag_add_reset(trst
, srst
);
1389 return jtag_execute_queue();
1392 COMMAND_HANDLER(handle_runtest_command
)
1395 return ERROR_COMMAND_SYNTAX_ERROR
;
1397 unsigned num_clocks
;
1398 COMMAND_PARSE_NUMBER(uint
, CMD_ARGV
[0], num_clocks
);
1400 jtag_add_runtest(num_clocks
, TAP_IDLE
);
1401 return jtag_execute_queue();
1405 * For "irscan" or "drscan" commands, the "end" (really, "next") state
1406 * should be stable ... and *NOT* a shift state, otherwise free-running
1407 * jtag clocks could change the values latched by the update state.
1408 * Not surprisingly, this is the same constraint as SVF; the "irscan"
1409 * and "drscan" commands are a write-only subset of what SVF provides.
1412 COMMAND_HANDLER(handle_irscan_command
)
1415 struct scan_field
*fields
;
1416 struct jtag_tap
*tap
;
1417 tap_state_t endstate
;
1419 if ((CMD_ARGC
< 2) || (CMD_ARGC
% 2))
1421 return ERROR_COMMAND_SYNTAX_ERROR
;
1424 /* optional "-endstate" "statename" at the end of the arguments,
1425 * so that e.g. IRPAUSE can let us load the data register before
1426 * entering RUN/IDLE to execute the instruction we load here.
1428 endstate
= TAP_IDLE
;
1430 if (CMD_ARGC
>= 4) {
1431 /* have at least one pair of numbers. */
1432 /* is last pair the magic text? */
1433 if (strcmp("-endstate", CMD_ARGV
[CMD_ARGC
- 2]) == 0) {
1434 endstate
= tap_state_by_name(CMD_ARGV
[CMD_ARGC
- 1]);
1435 if (endstate
== TAP_INVALID
)
1436 return ERROR_COMMAND_SYNTAX_ERROR
;
1437 if (!scan_is_safe(endstate
))
1438 LOG_WARNING("unstable irscan endstate \"%s\"",
1439 CMD_ARGV
[CMD_ARGC
- 1]);
1444 int num_fields
= CMD_ARGC
/ 2;
1445 size_t fields_len
= sizeof(struct scan_field
) * num_fields
;
1446 fields
= malloc(fields_len
);
1447 memset(fields
, 0, fields_len
);
1450 for (i
= 0; i
< num_fields
; i
++)
1452 tap
= jtag_tap_by_string(CMD_ARGV
[i
*2]);
1456 for (j
= 0; j
< i
; j
++)
1457 free(fields
[j
].out_value
);
1459 command_print(CMD_CTX
, "Tap: %s unknown", CMD_ARGV
[i
*2]);
1463 int field_size
= tap
->ir_length
;
1464 fields
[i
].tap
= tap
;
1465 fields
[i
].num_bits
= field_size
;
1466 fields
[i
].out_value
= malloc(DIV_ROUND_UP(field_size
, 8));
1469 retval
= parse_u32(CMD_ARGV
[i
* 2 + 1], &value
);
1470 if (ERROR_OK
!= retval
)
1472 buf_set_u32(fields
[i
].out_value
, 0, field_size
, value
);
1473 fields
[i
].in_value
= NULL
;
1476 /* did we have an endstate? */
1477 jtag_add_ir_scan(num_fields
, fields
, endstate
);
1479 retval
= jtag_execute_queue();
1482 for (i
= 0; i
< num_fields
; i
++)
1484 if (NULL
!= fields
[i
].out_value
)
1485 free(fields
[i
].out_value
);
1494 COMMAND_HANDLER(handle_verify_ircapture_command
)
1497 return ERROR_COMMAND_SYNTAX_ERROR
;
1502 COMMAND_PARSE_ENABLE(CMD_ARGV
[0], enable
);
1503 jtag_set_verify_capture_ir(enable
);
1506 const char *status
= jtag_will_verify_capture_ir() ? "enabled": "disabled";
1507 command_print(CMD_CTX
, "verify Capture-IR is %s", status
);
1512 COMMAND_HANDLER(handle_verify_jtag_command
)
1515 return ERROR_COMMAND_SYNTAX_ERROR
;
1520 COMMAND_PARSE_ENABLE(CMD_ARGV
[0], enable
);
1521 jtag_set_verify(enable
);
1524 const char *status
= jtag_will_verify() ? "enabled": "disabled";
1525 command_print(CMD_CTX
, "verify jtag capture is %s", status
);
1530 COMMAND_HANDLER(handle_tms_sequence_command
)
1533 return ERROR_COMMAND_SYNTAX_ERROR
;
1538 if (strcmp(CMD_ARGV
[0], "short") == 0)
1539 use_new_table
= true;
1540 else if (strcmp(CMD_ARGV
[0], "long") == 0)
1541 use_new_table
= false;
1543 return ERROR_COMMAND_SYNTAX_ERROR
;
1545 tap_use_new_tms_table(use_new_table
);
1548 command_print(CMD_CTX
, "tms sequence is %s",
1549 tap_uses_new_tms_table() ? "short": "long");
1554 static const struct command_registration jtag_command_handlers
[] = {
1556 .name
= "interface",
1557 .handler
= &handle_interface_command
,
1558 .mode
= COMMAND_CONFIG
,
1559 .help
= "select a JTAG interface",
1560 .usage
= "<driver_name>",
1563 .name
= "interface_list",
1564 .handler
= &handle_interface_list_command
,
1565 .mode
= COMMAND_ANY
,
1566 .help
= "list all built-in interfaces",
1570 .handler
= &handle_jtag_khz_command
,
1571 .mode
= COMMAND_ANY
,
1572 .help
= "set maximum jtag speed (if supported)",
1573 .usage
= "<khz:0=rtck>",
1576 .name
= "jtag_rclk",
1577 .handler
= &handle_jtag_rclk_command
,
1578 .mode
= COMMAND_ANY
,
1579 .help
= "set JTAG speed to RCLK or use fallback speed",
1580 .usage
= "<fallback_speed_khz>",
1583 .name
= "reset_config",
1584 .handler
= &handle_reset_config_command
,
1585 .mode
= COMMAND_ANY
,
1586 .help
= "configure JTAG reset behavior",
1587 .usage
= "[none|trst_only|srst_only|trst_and_srst] "
1588 "[srst_pulls_trst|trst_pulls_srst|combined|separate] "
1589 "[srst_gates_jtag|srst_nogate] "
1590 "[trst_push_pull|trst_open_drain] "
1591 "[srst_push_pull|srst_open_drain]",
1594 .name
= "jtag_nsrst_delay",
1595 .handler
= &handle_jtag_nsrst_delay_command
,
1596 .mode
= COMMAND_ANY
,
1597 .help
= "delay after deasserting srst in ms",
1601 .name
= "jtag_ntrst_delay",
1602 .handler
= &handle_jtag_ntrst_delay_command
,
1603 .mode
= COMMAND_ANY
,
1604 .help
= "delay after deasserting trst in ms",
1608 .name
= "jtag_nsrst_assert_width",
1609 .handler
= &handle_jtag_nsrst_assert_width_command
,
1610 .mode
= COMMAND_ANY
,
1611 .help
= "delay after asserting srst in ms",
1615 .name
= "jtag_ntrst_assert_width",
1616 .handler
= &handle_jtag_ntrst_assert_width_command
,
1617 .mode
= COMMAND_ANY
,
1618 .help
= "delay after asserting trst in ms",
1622 .name
= "scan_chain",
1623 .handler
= &handle_scan_chain_command
,
1624 .mode
= COMMAND_EXEC
,
1625 .help
= "print current scan chain configuration",
1628 .name
= "jtag_reset",
1629 .handler
= &handle_jtag_reset_command
,
1630 .mode
= COMMAND_EXEC
,
1631 .help
= "toggle reset lines",
1632 .usage
= "<trst> <srst>",
1636 .handler
= &handle_runtest_command
,
1637 .mode
= COMMAND_EXEC
,
1638 .help
= "move to Run-Test/Idle, and execute <num_cycles>",
1639 .usage
= "<num_cycles>"
1643 .handler
= &handle_irscan_command
,
1644 .mode
= COMMAND_EXEC
,
1645 .help
= "execute IR scan",
1646 .usage
= "<device> <instr> [dev2] [instr2] ...",
1649 .name
= "verify_ircapture",
1650 .handler
= &handle_verify_ircapture_command
,
1651 .mode
= COMMAND_ANY
,
1652 .help
= "verify value captured during Capture-IR",
1653 .usage
= "<enable | disable>",
1656 .name
= "verify_jtag",
1657 .handler
= &handle_verify_jtag_command
,
1658 .mode
= COMMAND_ANY
,
1659 .help
= "verify value capture",
1660 .usage
= "<enable | disable>",
1663 .name
= "tms_sequence",
1664 .handler
= &handle_tms_sequence_command
,
1665 .mode
= COMMAND_ANY
,
1666 .help
= "choose short(default) or long tms_sequence",
1667 .usage
= "<short | long>",
1671 .mode
= COMMAND_ANY
,
1672 .help
= "perform jtag tap actions",
1674 .chain
= jtag_subcommand_handlers
,
1677 .chain
= jtag_command_handlers_to_move
,
1679 COMMAND_REGISTRATION_DONE
1681 int jtag_register_commands(struct command_context
*cmd_ctx
)
1683 return register_commands(cmd_ctx
, NULL
, jtag_command_handlers
);