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 * This program is free software; you can redistribute it and/or modify *
13 * it under the terms of the GNU General Public License as published by *
14 * the Free Software Foundation; either version 2 of the License, or *
15 * (at your option) any later version. *
17 * This program is distributed in the hope that it will be useful, *
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
20 * GNU General Public License for more details. *
22 * You should have received a copy of the GNU General Public License *
23 * along with this program; if not, write to the *
24 * Free Software Foundation, Inc., *
25 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
26 ***************************************************************************/
32 #include "minidriver.h"
33 #include "interface.h"
40 int jtag_flush_queue_count
; /* count # of flushes for profiling / debugging purposes */
42 static void jtag_add_scan_check(void (*jtag_add_scan
)(int in_num_fields
, const scan_field_t
*in_fields
, tap_state_t state
),
43 int in_num_fields
, scan_field_t
*in_fields
, tap_state_t state
);
45 /* note that this is not marked as static as it must be available from outside jtag.c for those
46 that implement the jtag_xxx() minidriver layer
48 int jtag_error
=ERROR_OK
;
50 char* jtag_event_strings
[] =
52 "JTAG controller reset (RESET or TRST)"
55 const Jim_Nvp nvp_jtag_tap_event
[] = {
56 { .value
= JTAG_TAP_EVENT_ENABLE
, .name
= "tap-enable" },
57 { .value
= JTAG_TAP_EVENT_DISABLE
, .name
= "tap-disable" },
59 { .name
= NULL
, .value
= -1 }
65 static jtag_tap_t
*jtag_all_taps
= NULL
;
67 enum reset_types jtag_reset_config
= RESET_NONE
;
68 tap_state_t cmd_queue_end_state
= TAP_RESET
;
69 tap_state_t cmd_queue_cur_state
= TAP_RESET
;
71 int jtag_verify_capture_ir
= 1;
74 /* how long the OpenOCD should wait before attempting JTAG communication after reset lines deasserted (in ms) */
75 static int jtag_nsrst_delay
= 0; /* default to no nSRST delay */
76 static int jtag_ntrst_delay
= 0; /* default to no nTRST delay */
78 /* maximum number of JTAG devices expected in the chain
80 #define JTAG_MAX_CHAIN_SIZE 20
82 /* callbacks to inform high-level handlers about JTAG state changes */
83 jtag_event_callback_t
*jtag_event_callbacks
;
86 static int speed_khz
= 0;
87 /* flag if the kHz speed was defined */
88 static int hasKHz
= 0;
90 /* jtag interfaces (parport, FTDI-USB, TI-USB, ...)
93 #if BUILD_ECOSBOARD == 1
94 extern jtag_interface_t zy1000_interface
;
97 #if BUILD_PARPORT == 1
98 extern jtag_interface_t parport_interface
;
102 extern jtag_interface_t dummy_interface
;
105 #if BUILD_FT2232_FTD2XX == 1
106 extern jtag_interface_t ft2232_interface
;
109 #if BUILD_FT2232_LIBFTDI == 1
110 extern jtag_interface_t ft2232_interface
;
113 #if BUILD_AMTJTAGACCEL == 1
114 extern jtag_interface_t amt_jtagaccel_interface
;
117 #if BUILD_EP93XX == 1
118 extern jtag_interface_t ep93xx_interface
;
121 #if BUILD_AT91RM9200 == 1
122 extern jtag_interface_t at91rm9200_interface
;
125 #if BUILD_GW16012 == 1
126 extern jtag_interface_t gw16012_interface
;
129 #if BUILD_PRESTO_LIBFTDI == 1 || BUILD_PRESTO_FTD2XX == 1
130 extern jtag_interface_t presto_interface
;
133 #if BUILD_USBPROG == 1
134 extern jtag_interface_t usbprog_interface
;
138 extern jtag_interface_t jlink_interface
;
141 #if BUILD_VSLLINK == 1
142 extern jtag_interface_t vsllink_interface
;
146 extern jtag_interface_t rlink_interface
;
149 #if BUILD_ARMJTAGEW == 1
150 extern jtag_interface_t armjtagew_interface
;
153 jtag_interface_t
*jtag_interfaces
[] = {
154 #if BUILD_ECOSBOARD == 1
157 #if BUILD_PARPORT == 1
163 #if BUILD_FT2232_FTD2XX == 1
166 #if BUILD_FT2232_LIBFTDI == 1
169 #if BUILD_AMTJTAGACCEL == 1
170 &amt_jtagaccel_interface
,
172 #if BUILD_EP93XX == 1
175 #if BUILD_AT91RM9200 == 1
176 &at91rm9200_interface
,
178 #if BUILD_GW16012 == 1
181 #if BUILD_PRESTO_LIBFTDI == 1 || BUILD_PRESTO_FTD2XX == 1
184 #if BUILD_USBPROG == 1
190 #if BUILD_VSLLINK == 1
196 #if BUILD_ARMJTAGEW == 1
197 &armjtagew_interface
,
202 struct jtag_interface_s
*jtag
= NULL
;
205 static jtag_interface_t
*jtag_interface
= NULL
;
209 static int handle_interface_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
);
210 static int handle_jtag_speed_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
);
211 static int handle_jtag_khz_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
);
212 static int handle_jtag_device_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
);
213 static int handle_reset_config_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
);
214 static int handle_jtag_nsrst_delay_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
);
215 static int handle_jtag_ntrst_delay_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
);
217 static int handle_scan_chain_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
);
219 static int handle_endstate_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
);
220 static int handle_jtag_reset_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
);
221 static int handle_runtest_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
);
222 static int handle_irscan_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
);
223 static int Jim_Command_drscan(Jim_Interp
*interp
, int argc
, Jim_Obj
*const *argv
);
224 static int Jim_Command_flush_count(Jim_Interp
*interp
, int argc
, Jim_Obj
*const *args
);
226 static int handle_verify_ircapture_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
);
227 static int handle_verify_jtag_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
);
228 static int handle_tms_sequence_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
);
230 jtag_tap_t
*jtag_AllTaps(void)
232 return jtag_all_taps
;
235 int jtag_NumTotalTaps(void)
249 int jtag_NumEnabledTaps(void)
265 jtag_tap_t
*jtag_TapByString( const char *s
)
273 if( 0 == strcmp( t
->dotted_name
, s
) ){
279 /* backup plan is by number */
281 /* ok - is "s" a number? */
283 n
= strtol( s
, &cp
, 0 );
284 if( (s
!= cp
) && (*cp
== 0) ){
286 t
= jtag_TapByAbsPosition(n
);
292 jtag_tap_t
* jtag_TapByJimObj( Jim_Interp
*interp
, Jim_Obj
*o
)
297 cp
= Jim_GetString( o
, NULL
);
302 t
= jtag_TapByString( cp
);
305 Jim_SetResult_sprintf(interp
,"Tap: %s is unknown", cp
);
310 /* returns a pointer to the n-th device in the scan chain */
311 jtag_tap_t
* jtag_TapByAbsPosition( int n
)
319 while( t
&& (n
> 0)) {
326 int jtag_register_event_callback(int (*callback
)(enum jtag_event event
, void *priv
), void *priv
)
328 jtag_event_callback_t
**callbacks_p
= &jtag_event_callbacks
;
330 if (callback
== NULL
)
332 return ERROR_INVALID_ARGUMENTS
;
337 while ((*callbacks_p
)->next
)
338 callbacks_p
= &((*callbacks_p
)->next
);
339 callbacks_p
= &((*callbacks_p
)->next
);
342 (*callbacks_p
) = malloc(sizeof(jtag_event_callback_t
));
343 (*callbacks_p
)->callback
= callback
;
344 (*callbacks_p
)->priv
= priv
;
345 (*callbacks_p
)->next
= NULL
;
350 int jtag_unregister_event_callback(int (*callback
)(enum jtag_event event
, void *priv
))
352 jtag_event_callback_t
**callbacks_p
= &jtag_event_callbacks
;
354 if (callback
== NULL
)
356 return ERROR_INVALID_ARGUMENTS
;
361 jtag_event_callback_t
**next
= &((*callbacks_p
)->next
);
362 if ((*callbacks_p
)->callback
== callback
)
365 *callbacks_p
= *next
;
373 int jtag_call_event_callbacks(enum jtag_event event
)
375 jtag_event_callback_t
*callback
= jtag_event_callbacks
;
377 LOG_DEBUG("jtag event: %s", jtag_event_strings
[event
]);
381 callback
->callback(event
, callback
->priv
);
382 callback
= callback
->next
;
388 static void jtag_checks(void)
390 assert(jtag_trst
== 0);
393 static void jtag_prelude(tap_state_t state
)
397 assert(state
!=TAP_INVALID
);
399 cmd_queue_cur_state
= state
;
402 void jtag_alloc_in_value32(scan_field_t
*field
)
404 interface_jtag_alloc_in_value32(field
);
407 void jtag_add_ir_scan_noverify(int in_num_fields
, const scan_field_t
*in_fields
, tap_state_t state
)
412 retval
=interface_jtag_add_ir_scan(in_num_fields
, in_fields
, state
);
413 if (retval
!=ERROR_OK
)
420 * Generate an IR SCAN with a list of scan fields with one entry for each enabled TAP.
422 * If the input field list contains an instruction value for a TAP then that is used
423 * otherwise the TAP is set to bypass.
425 * TAPs for which no fields are passed are marked as bypassed for subsequent DR SCANs.
428 void jtag_add_ir_scan(int in_num_fields
, scan_field_t
*in_fields
, tap_state_t state
)
430 if (jtag_verify
&&jtag_verify_capture_ir
)
432 /* 8 x 32 bit id's is enough for all invocations */
434 for (int j
= 0; j
< in_num_fields
; j
++)
436 /* if we are to run a verification of the ir scan, we need to get the input back.
437 * We may have to allocate space if the caller didn't ask for the input back.
439 in_fields
[j
].check_value
=in_fields
[j
].tap
->expected
;
440 in_fields
[j
].check_mask
=in_fields
[j
].tap
->expected_mask
;
442 jtag_add_scan_check(jtag_add_ir_scan_noverify
, in_num_fields
, in_fields
, state
);
445 jtag_add_ir_scan_noverify(in_num_fields
, in_fields
, state
);
450 * Duplicate the scan fields passed into the function into an IR SCAN command
452 * This function assumes that the caller handles extra fields for bypassed TAPs
455 void jtag_add_plain_ir_scan(int in_num_fields
, const scan_field_t
*in_fields
, tap_state_t state
)
461 retval
=interface_jtag_add_plain_ir_scan(in_num_fields
, in_fields
, state
);
462 if (retval
!=ERROR_OK
)
466 void jtag_add_callback(jtag_callback1_t f
, u8
*in
)
468 interface_jtag_add_callback(f
, in
);
471 void jtag_add_callback4(jtag_callback_t f
, u8
*in
,
472 jtag_callback_data_t data1
, jtag_callback_data_t data2
,
473 jtag_callback_data_t data3
)
475 interface_jtag_add_callback4(f
, in
, data1
, data2
, data3
);
478 int jtag_check_value_inner(u8
*captured
, u8
*in_check_value
, u8
*in_check_mask
, int num_bits
);
480 static int jtag_check_value_mask_callback(u8
*in
, jtag_callback_data_t data1
, jtag_callback_data_t data2
, jtag_callback_data_t data3
)
482 return jtag_check_value_inner(in
, (u8
*)data1
, (u8
*)data2
, (int)data3
);
485 static void jtag_add_scan_check(void (*jtag_add_scan
)(int in_num_fields
, const scan_field_t
*in_fields
, tap_state_t state
),
486 int in_num_fields
, scan_field_t
*in_fields
, tap_state_t state
)
488 for (int i
= 0; i
< in_num_fields
; i
++)
490 struct scan_field_s
*field
= &in_fields
[i
];
491 field
->allocated
= 0;
493 if (field
->check_value
|| field
->in_value
)
495 interface_jtag_add_scan_check_alloc(field
);
499 jtag_add_scan(in_num_fields
, in_fields
, state
);
501 for (int i
= 0; i
< in_num_fields
; i
++)
503 if ((in_fields
[i
].check_value
!= NULL
) && (in_fields
[i
].in_value
!= NULL
))
505 /* this is synchronous for a minidriver */
506 jtag_add_callback4(jtag_check_value_mask_callback
, in_fields
[i
].in_value
,
507 (jtag_callback_data_t
)in_fields
[i
].check_value
,
508 (jtag_callback_data_t
)in_fields
[i
].check_mask
,
509 (jtag_callback_data_t
)in_fields
[i
].num_bits
);
511 if (in_fields
[i
].allocated
)
513 free(in_fields
[i
].in_value
);
515 if (in_fields
[i
].modified
)
517 in_fields
[i
].in_value
= NULL
;
522 void jtag_add_dr_scan_check(int in_num_fields
, scan_field_t
*in_fields
, tap_state_t state
)
526 jtag_add_scan_check(jtag_add_dr_scan
, in_num_fields
, in_fields
, state
);
529 jtag_add_dr_scan(in_num_fields
, in_fields
, state
);
535 * Generate a DR SCAN using the fields passed to the function
537 * For not bypassed TAPs the function checks in_fields and uses fields specified there.
538 * For bypassed TAPs the function generates a dummy 1bit field.
540 * The bypass status of TAPs is set by jtag_add_ir_scan().
543 void jtag_add_dr_scan(int in_num_fields
, const scan_field_t
*in_fields
, tap_state_t state
)
549 retval
=interface_jtag_add_dr_scan(in_num_fields
, in_fields
, state
);
550 if (retval
!=ERROR_OK
)
557 * Duplicate the scan fields passed into the function into a DR SCAN command
559 * This function assumes that the caller handles extra fields for bypassed TAPs
562 void jtag_add_plain_dr_scan(int in_num_fields
, const scan_field_t
*in_fields
, tap_state_t state
)
568 retval
=interface_jtag_add_plain_dr_scan(in_num_fields
, in_fields
, state
);
569 if (retval
!=ERROR_OK
)
573 void jtag_add_dr_out(jtag_tap_t
* tap
,
574 int num_fields
, const int* num_bits
, const u32
* value
,
575 tap_state_t end_state
)
577 assert(end_state
!= TAP_INVALID
);
579 cmd_queue_cur_state
= end_state
;
581 interface_jtag_add_dr_out(tap
,
582 num_fields
, num_bits
, value
,
586 void jtag_add_tlr(void)
588 jtag_prelude(TAP_RESET
);
591 retval
=interface_jtag_add_tlr();
592 if (retval
!=ERROR_OK
)
595 jtag_call_event_callbacks(JTAG_TRST_ASSERTED
);
598 void jtag_add_pathmove(int num_states
, const tap_state_t
*path
)
600 tap_state_t cur_state
= cmd_queue_cur_state
;
604 /* the last state has to be a stable state */
605 if (!tap_is_state_stable(path
[num_states
- 1]))
607 LOG_ERROR("BUG: TAP path doesn't finish in a stable state");
611 for (i
=0; i
<num_states
; i
++)
613 if (path
[i
] == TAP_RESET
)
615 LOG_ERROR("BUG: TAP_RESET is not a valid state for pathmove sequences");
619 if ( tap_state_transition(cur_state
, true) != path
[i
]
620 && tap_state_transition(cur_state
, false) != path
[i
])
622 LOG_ERROR("BUG: %s -> %s isn't a valid TAP transition", tap_state_name(cur_state
), tap_state_name(path
[i
]));
630 retval
= interface_jtag_add_pathmove(num_states
, path
);
631 cmd_queue_cur_state
= path
[num_states
- 1];
632 if (retval
!=ERROR_OK
)
636 void jtag_add_runtest(int num_cycles
, tap_state_t state
)
642 /* executed by sw or hw fifo */
643 retval
=interface_jtag_add_runtest(num_cycles
, state
);
644 if (retval
!=ERROR_OK
)
649 void jtag_add_clocks( int num_cycles
)
653 if( !tap_is_state_stable(cmd_queue_cur_state
) )
655 LOG_ERROR( "jtag_add_clocks() was called with TAP in non-stable state \"%s\"",
656 tap_state_name(cmd_queue_cur_state
) );
657 jtag_error
= ERROR_JTAG_NOT_STABLE_STATE
;
665 retval
= interface_jtag_add_clocks(num_cycles
);
666 if (retval
!= ERROR_OK
)
671 void jtag_add_reset(int req_tlr_or_trst
, int req_srst
)
673 int trst_with_tlr
= 0;
676 /* FIX!!! there are *many* different cases here. A better
677 * approach is needed for legal combinations of transitions...
679 if ((jtag_reset_config
& RESET_HAS_SRST
)&&
680 (jtag_reset_config
& RESET_HAS_TRST
)&&
681 ((jtag_reset_config
& RESET_SRST_PULLS_TRST
)==0))
683 if (((req_tlr_or_trst
&&!jtag_trst
)||
684 (!req_tlr_or_trst
&&jtag_trst
))&&
685 ((req_srst
&&!jtag_srst
)||
686 (!req_srst
&&jtag_srst
)))
688 /* FIX!!! srst_pulls_trst allows 1,1 => 0,0 transition.... */
689 //LOG_ERROR("BUG: transition of req_tlr_or_trst and req_srst in the same jtag_add_reset() call is undefined");
693 /* Make sure that jtag_reset_config allows the requested reset */
694 /* if SRST pulls TRST, we can't fulfill srst == 1 with trst == 0 */
695 if (((jtag_reset_config
& RESET_SRST_PULLS_TRST
) && (req_srst
== 1)) && (!req_tlr_or_trst
))
697 LOG_ERROR("BUG: requested reset would assert trst");
698 jtag_error
=ERROR_FAIL
;
702 /* if TRST pulls SRST, we reset with TAP T-L-R */
703 if (((jtag_reset_config
& RESET_TRST_PULLS_SRST
) && (req_tlr_or_trst
)) && (req_srst
== 0))
708 if (req_srst
&& !(jtag_reset_config
& RESET_HAS_SRST
))
710 LOG_ERROR("BUG: requested SRST assertion, but the current configuration doesn't support this");
711 jtag_error
=ERROR_FAIL
;
717 if (!trst_with_tlr
&& (jtag_reset_config
& RESET_HAS_TRST
))
729 jtag_srst
= req_srst
;
731 retval
= interface_jtag_add_reset(jtag_trst
, jtag_srst
);
732 if (retval
!=ERROR_OK
)
737 jtag_execute_queue();
741 LOG_DEBUG("SRST line asserted");
745 LOG_DEBUG("SRST line released");
746 if (jtag_nsrst_delay
)
747 jtag_add_sleep(jtag_nsrst_delay
* 1000);
752 LOG_DEBUG("JTAG reset with RESET instead of TRST");
753 jtag_add_end_state(TAP_RESET
);
760 /* we just asserted nTRST, so we're now in Test-Logic-Reset,
761 * and inform possible listeners about this
763 LOG_DEBUG("TRST line asserted");
764 tap_set_state(TAP_RESET
);
765 jtag_call_event_callbacks(JTAG_TRST_ASSERTED
);
769 if (jtag_ntrst_delay
)
770 jtag_add_sleep(jtag_ntrst_delay
* 1000);
774 tap_state_t
jtag_add_end_state(tap_state_t state
)
776 if ((state
== TAP_DRSHIFT
)||(state
== TAP_IRSHIFT
))
778 LOG_ERROR("BUG: TAP_DRSHIFT/IRSHIFT can't be end state. Calling code should use a larger scan field");
781 if (state
!=TAP_INVALID
)
782 cmd_queue_end_state
= state
;
783 return cmd_queue_end_state
;
786 void jtag_add_sleep(u32 us
)
788 keep_alive(); /* we might be running on a very slow JTAG clk */
789 int retval
=interface_jtag_add_sleep(us
);
790 if (retval
!=ERROR_OK
)
795 static const char *jtag_tap_name(const jtag_tap_t
*tap
)
797 return (tap
== NULL
) ? "(unknown)" : tap
->dotted_name
;
800 int jtag_check_value_inner(u8
*captured
, u8
*in_check_value
, u8
*in_check_mask
, int num_bits
)
802 int retval
= ERROR_OK
;
804 int compare_failed
= 0;
807 compare_failed
= buf_cmp_mask(captured
, in_check_value
, in_check_mask
, num_bits
);
809 compare_failed
= buf_cmp(captured
, in_check_value
, num_bits
);
812 /* An error handler could have caught the failing check
813 * only report a problem when there wasn't a handler, or if the handler
814 * acknowledged the error
817 LOG_WARNING("TAP %s:",
818 jtag_tap_name(field->tap));
822 char *captured_char
= buf_to_str(captured
, (num_bits
> DEBUG_JTAG_IOZ
) ? DEBUG_JTAG_IOZ
: num_bits
, 16);
823 char *in_check_value_char
= buf_to_str(in_check_value
, (num_bits
> DEBUG_JTAG_IOZ
) ? DEBUG_JTAG_IOZ
: num_bits
, 16);
827 char *in_check_mask_char
;
828 in_check_mask_char
= buf_to_str(in_check_mask
, (num_bits
> DEBUG_JTAG_IOZ
) ? DEBUG_JTAG_IOZ
: num_bits
, 16);
829 LOG_WARNING("value captured during scan didn't pass the requested check:");
830 LOG_WARNING("captured: 0x%s check_value: 0x%s check_mask: 0x%s",
831 captured_char
, in_check_value_char
, in_check_mask_char
);
832 free(in_check_mask_char
);
836 LOG_WARNING("value captured during scan didn't pass the requested check: captured: 0x%s check_value: 0x%s", captured_char
, in_check_value_char
);
840 free(in_check_value_char
);
842 retval
= ERROR_JTAG_QUEUE_FAILED
;
849 void jtag_check_value_mask(scan_field_t
*field
, u8
*value
, u8
*mask
)
851 assert(field
->in_value
!= NULL
);
855 /* no checking to do */
859 jtag_execute_queue_noclear();
861 int retval
=jtag_check_value_inner(field
->in_value
, value
, mask
, field
->num_bits
);
862 jtag_set_error(retval
);
867 int default_interface_jtag_execute_queue(void)
871 LOG_ERROR("No JTAG interface configured yet. "
872 "Issue 'init' command in startup scripts "
873 "before communicating with targets.");
877 return jtag
->execute_queue();
880 void jtag_execute_queue_noclear(void)
882 /* each flush can take as much as 1-2ms on high bandwidth low latency interfaces.
883 * E.g. a JTAG over TCP/IP or USB....
885 jtag_flush_queue_count
++;
887 int retval
=interface_jtag_execute_queue();
888 /* we keep the first error */
889 if ((jtag_error
==ERROR_OK
)&&(retval
!=ERROR_OK
))
895 int jtag_execute_queue(void)
898 jtag_execute_queue_noclear();
904 int jtag_reset_callback(enum jtag_event event
, void *priv
)
906 jtag_tap_t
*tap
= priv
;
910 if (event
== JTAG_TRST_ASSERTED
)
912 buf_set_ones(tap
->cur_instr
, tap
->ir_length
);
919 void jtag_sleep(u32 us
)
921 alive_sleep(us
/1000);
924 /* Try to examine chain layout according to IEEE 1149.1 §12
926 int jtag_examine_chain(void)
930 u8 idcode_buffer
[JTAG_MAX_CHAIN_SIZE
* 4];
933 int device_count
= 0;
938 field
.num_bits
= sizeof(idcode_buffer
) * 8;
939 field
.out_value
= idcode_buffer
;
941 field
.in_value
= idcode_buffer
;
946 for (i
= 0; i
< JTAG_MAX_CHAIN_SIZE
; i
++)
948 buf_set_u32(idcode_buffer
, i
* 32, 32, 0x000000FF);
951 jtag_add_plain_dr_scan(1, &field
, TAP_RESET
);
952 jtag_execute_queue();
954 for (i
= 0; i
< JTAG_MAX_CHAIN_SIZE
* 4; i
++)
956 zero_check
|= idcode_buffer
[i
];
957 one_check
&= idcode_buffer
[i
];
960 /* if there wasn't a single non-zero bit or if all bits were one, the scan isn't valid */
961 if ((zero_check
== 0x00) || (one_check
== 0xff))
963 LOG_ERROR("JTAG communication failure, check connection, JTAG interface, target power etc.");
964 return ERROR_JTAG_INIT_FAILED
;
967 /* point at the 1st tap */
968 tap
= jtag_NextEnabledTap(NULL
);
970 LOG_ERROR("JTAG: No taps enabled?");
971 return ERROR_JTAG_INIT_FAILED
;
974 for (bit_count
= 0; bit_count
< (JTAG_MAX_CHAIN_SIZE
* 32) - 31;)
976 u32 idcode
= buf_get_u32(idcode_buffer
, bit_count
, 32);
977 if ((idcode
& 1) == 0)
979 /* LSB must not be 0, this indicates a device in bypass */
980 LOG_WARNING("Tap/Device does not have IDCODE");
991 /* some devices, such as AVR will output all 1's instead of TDI
992 input value at end of chain. */
993 if ((idcode
== 0x000000FF)||(idcode
== 0xFFFFFFFF))
996 /* End of chain (invalid manufacturer ID)
998 * The JTAG examine is the very first thing that happens
1000 * A single JTAG device requires only 64 bits to be read back correctly.
1002 * The code below adds a check that the rest of the data scanned (640 bits)
1003 * are all as expected. This helps diagnose/catch problems with the JTAG chain
1005 * earlier and gives more helpful/explicit error messages.
1007 for (bit_count
+= 32; bit_count
< (JTAG_MAX_CHAIN_SIZE
* 32) - 31;bit_count
+= 32)
1009 idcode
= buf_get_u32(idcode_buffer
, bit_count
, 32);
1010 if (unexpected
||((idcode
!= 0x000000FF)&&(idcode
!= 0xFFFFFFFF)))
1012 LOG_WARNING("Unexpected idcode after end of chain! %d 0x%08x", bit_count
, idcode
);
1020 #define EXTRACT_MFG(X) (((X) & 0xffe) >> 1)
1021 manufacturer
= EXTRACT_MFG(idcode
);
1022 #define EXTRACT_PART(X) (((X) & 0xffff000) >> 12)
1023 part
= EXTRACT_PART(idcode
);
1024 #define EXTRACT_VER(X) (((X) & 0xf0000000) >> 28)
1025 version
= EXTRACT_VER(idcode
);
1027 LOG_INFO("JTAG tap: %s tap/device found: 0x%8.8x (Manufacturer: 0x%3.3x, Part: 0x%4.4x, Version: 0x%1.1x)",
1028 ((tap
!= NULL
) ? (tap
->dotted_name
) : "(not-named)"),
1029 idcode
, manufacturer
, part
, version
);
1035 tap
->idcode
= idcode
;
1037 if (tap
->expected_ids_cnt
> 0) {
1038 /* Loop over the expected identification codes and test for a match */
1040 for (ii
= 0; ii
< tap
->expected_ids_cnt
; ii
++) {
1041 if( tap
->idcode
== tap
->expected_ids
[ii
] ){
1046 /* If none of the expected ids matched, log an error */
1047 if (ii
== tap
->expected_ids_cnt
) {
1048 LOG_ERROR("JTAG tap: %s got: 0x%08x (mfg: 0x%3.3x, part: 0x%4.4x, ver: 0x%1.1x)",
1051 EXTRACT_MFG( tap
->idcode
),
1052 EXTRACT_PART( tap
->idcode
),
1053 EXTRACT_VER( tap
->idcode
) );
1054 for (ii
= 0; ii
< tap
->expected_ids_cnt
; ii
++) {
1055 LOG_ERROR("JTAG tap: %s expected %hhu of %hhu: 0x%08x (mfg: 0x%3.3x, part: 0x%4.4x, ver: 0x%1.1x)",
1058 tap
->expected_ids_cnt
,
1059 tap
->expected_ids
[ii
],
1060 EXTRACT_MFG( tap
->expected_ids
[ii
] ),
1061 EXTRACT_PART( tap
->expected_ids
[ii
] ),
1062 EXTRACT_VER( tap
->expected_ids
[ii
] ) );
1065 return ERROR_JTAG_INIT_FAILED
;
1067 LOG_INFO("JTAG Tap/device matched");
1071 LOG_INFO("JTAG TAP ID: 0x%08x - Unknown - please report (A) chipname and (B) idcode to the openocd project",
1075 tap
= jtag_NextEnabledTap(tap
);
1080 /* see if number of discovered devices matches configuration */
1081 if (device_count
!= jtag_NumEnabledTaps())
1083 LOG_ERROR("number of discovered devices in JTAG chain (%i) doesn't match (enabled) configuration (%i), total taps: %d",
1084 device_count
, jtag_NumEnabledTaps(), jtag_NumTotalTaps());
1085 LOG_ERROR("check the config file and ensure proper JTAG communication (connections, speed, ...)");
1086 return ERROR_JTAG_INIT_FAILED
;
1092 int jtag_validate_chain(void)
1095 int total_ir_length
= 0;
1101 total_ir_length
= 0;
1103 tap
= jtag_NextEnabledTap(tap
);
1107 total_ir_length
+= tap
->ir_length
;
1110 total_ir_length
+= 2;
1111 ir_test
= malloc(CEIL(total_ir_length
, 8));
1112 buf_set_ones(ir_test
, total_ir_length
);
1115 field
.num_bits
= total_ir_length
;
1116 field
.out_value
= ir_test
;
1117 field
.in_value
= ir_test
;
1120 jtag_add_plain_ir_scan(1, &field
, TAP_RESET
);
1121 jtag_execute_queue();
1127 tap
= jtag_NextEnabledTap(tap
);
1132 val
= buf_get_u32(ir_test
, chain_pos
, 2);
1135 char *cbuf
= buf_to_str(ir_test
, total_ir_length
, 16);
1136 LOG_ERROR("Could not validate JTAG scan chain, IR mismatch, scan returned 0x%s. tap=%s pos=%d expected 0x1 got %0x", cbuf
, jtag_tap_name(tap
), chain_pos
, val
);
1139 return ERROR_JTAG_INIT_FAILED
;
1141 chain_pos
+= tap
->ir_length
;
1144 val
= buf_get_u32(ir_test
, chain_pos
, 2);
1147 char *cbuf
= buf_to_str(ir_test
, total_ir_length
, 16);
1148 LOG_ERROR("Could not validate end of JTAG scan chain, IR mismatch, scan returned 0x%s. pos=%d expected 0x3 got %0x", cbuf
, chain_pos
, val
);
1151 return ERROR_JTAG_INIT_FAILED
;
1159 enum jtag_tap_cfg_param
{
1163 static Jim_Nvp nvp_config_opts
[] = {
1164 { .name
= "-event", .value
= JCFG_EVENT
},
1166 { .name
= NULL
, .value
= -1 }
1169 static int jtag_tap_configure_cmd( Jim_GetOptInfo
*goi
, jtag_tap_t
* tap
)
1175 /* parse config or cget options */
1176 while (goi
->argc
> 0) {
1177 Jim_SetEmptyResult (goi
->interp
);
1179 e
= Jim_GetOpt_Nvp(goi
, nvp_config_opts
, &n
);
1181 Jim_GetOpt_NvpUnknown(goi
, nvp_config_opts
, 0);
1187 if (goi
->argc
== 0) {
1188 Jim_WrongNumArgs( goi
->interp
, goi
->argc
, goi
->argv
, "-event ?event-name? ..." );
1192 e
= Jim_GetOpt_Nvp( goi
, nvp_jtag_tap_event
, &n
);
1194 Jim_GetOpt_NvpUnknown(goi
, nvp_jtag_tap_event
, 1);
1198 if (goi
->isconfigure
) {
1199 if (goi
->argc
!= 1) {
1200 Jim_WrongNumArgs(goi
->interp
, goi
->argc
, goi
->argv
, "-event ?event-name? ?EVENT-BODY?");
1204 if (goi
->argc
!= 0) {
1205 Jim_WrongNumArgs(goi
->interp
, goi
->argc
, goi
->argv
, "-event ?event-name?");
1211 jtag_tap_event_action_t
*jteap
;
1213 jteap
= tap
->event_action
;
1214 /* replace existing? */
1216 if (jteap
->event
== (enum jtag_tap_event
)n
->value
) {
1219 jteap
= jteap
->next
;
1222 if (goi
->isconfigure
) {
1223 if (jteap
== NULL
) {
1225 jteap
= calloc(1, sizeof (*jteap
));
1227 jteap
->event
= n
->value
;
1228 Jim_GetOpt_Obj( goi
, &o
);
1230 Jim_DecrRefCount(interp
, jteap
->body
);
1232 jteap
->body
= Jim_DuplicateObj(goi
->interp
, o
);
1233 Jim_IncrRefCount(jteap
->body
);
1235 /* add to head of event list */
1236 jteap
->next
= tap
->event_action
;
1237 tap
->event_action
= jteap
;
1238 Jim_SetEmptyResult(goi
->interp
);
1241 if (jteap
== NULL
) {
1242 Jim_SetEmptyResult(goi
->interp
);
1244 Jim_SetResult(goi
->interp
, Jim_DuplicateObj(goi
->interp
, jteap
->body
));
1251 } /* while (goi->argc) */
1256 static int jim_newtap_cmd( Jim_GetOptInfo
*goi
)
1266 const Jim_Nvp opts
[] = {
1267 #define NTAP_OPT_IRLEN 0
1268 { .name
= "-irlen" , .value
= NTAP_OPT_IRLEN
},
1269 #define NTAP_OPT_IRMASK 1
1270 { .name
= "-irmask" , .value
= NTAP_OPT_IRMASK
},
1271 #define NTAP_OPT_IRCAPTURE 2
1272 { .name
= "-ircapture" , .value
= NTAP_OPT_IRCAPTURE
},
1273 #define NTAP_OPT_ENABLED 3
1274 { .name
= "-enable" , .value
= NTAP_OPT_ENABLED
},
1275 #define NTAP_OPT_DISABLED 4
1276 { .name
= "-disable" , .value
= NTAP_OPT_DISABLED
},
1277 #define NTAP_OPT_EXPECTED_ID 5
1278 { .name
= "-expected-id" , .value
= NTAP_OPT_EXPECTED_ID
},
1279 { .name
= NULL
, .value
= -1 },
1282 pTap
= malloc( sizeof(jtag_tap_t
) );
1283 memset( pTap
, 0, sizeof(*pTap
) );
1285 Jim_SetResult_sprintf( goi
->interp
, "no memory");
1289 * we expect CHIP + TAP + OPTIONS
1291 if( goi
->argc
< 3 ){
1292 Jim_SetResult_sprintf(goi
->interp
, "Missing CHIP TAP OPTIONS ....");
1295 Jim_GetOpt_String( goi
, &cp
, NULL
);
1296 pTap
->chip
= strdup(cp
);
1298 Jim_GetOpt_String( goi
, &cp
, NULL
);
1299 pTap
->tapname
= strdup(cp
);
1301 /* name + dot + name + null */
1302 x
= strlen(pTap
->chip
) + 1 + strlen(pTap
->tapname
) + 1;
1304 sprintf( cp
, "%s.%s", pTap
->chip
, pTap
->tapname
);
1305 pTap
->dotted_name
= cp
;
1307 LOG_DEBUG("Creating New Tap, Chip: %s, Tap: %s, Dotted: %s, %d params",
1308 pTap
->chip
, pTap
->tapname
, pTap
->dotted_name
, goi
->argc
);
1310 /* default is enabled */
1313 /* deal with options */
1314 #define NTREQ_IRLEN 1
1315 #define NTREQ_IRCAPTURE 2
1316 #define NTREQ_IRMASK 4
1318 /* clear them as we find them */
1319 reqbits
= (NTREQ_IRLEN
| NTREQ_IRCAPTURE
| NTREQ_IRMASK
);
1322 e
= Jim_GetOpt_Nvp( goi
, opts
, &n
);
1324 Jim_GetOpt_NvpUnknown( goi
, opts
, 0 );
1327 LOG_DEBUG("Processing option: %s", n
->name
);
1329 case NTAP_OPT_ENABLED
:
1332 case NTAP_OPT_DISABLED
:
1335 case NTAP_OPT_EXPECTED_ID
:
1337 u32
*new_expected_ids
;
1339 e
= Jim_GetOpt_Wide( goi
, &w
);
1341 Jim_SetResult_sprintf(goi
->interp
, "option: %s bad parameter", n
->name
);
1345 new_expected_ids
= malloc(sizeof(u32
) * (pTap
->expected_ids_cnt
+ 1));
1346 if (new_expected_ids
== NULL
) {
1347 Jim_SetResult_sprintf( goi
->interp
, "no memory");
1351 memcpy(new_expected_ids
, pTap
->expected_ids
, sizeof(u32
) * pTap
->expected_ids_cnt
);
1353 new_expected_ids
[pTap
->expected_ids_cnt
] = w
;
1355 free(pTap
->expected_ids
);
1356 pTap
->expected_ids
= new_expected_ids
;
1357 pTap
->expected_ids_cnt
++;
1360 case NTAP_OPT_IRLEN
:
1361 case NTAP_OPT_IRMASK
:
1362 case NTAP_OPT_IRCAPTURE
:
1363 e
= Jim_GetOpt_Wide( goi
, &w
);
1365 Jim_SetResult_sprintf( goi
->interp
, "option: %s bad parameter", n
->name
);
1368 if( (w
< 0) || (w
> 0xffff) ){
1370 Jim_SetResult_sprintf( goi
->interp
, "option: %s - wacky value: %d (0x%x)",
1371 n
->name
, (int)(w
), (int)(w
));
1375 case NTAP_OPT_IRLEN
:
1376 pTap
->ir_length
= w
;
1377 reqbits
&= (~(NTREQ_IRLEN
));
1379 case NTAP_OPT_IRMASK
:
1380 pTap
->ir_capture_mask
= w
;
1381 reqbits
&= (~(NTREQ_IRMASK
));
1383 case NTAP_OPT_IRCAPTURE
:
1384 pTap
->ir_capture_value
= w
;
1385 reqbits
&= (~(NTREQ_IRCAPTURE
));
1388 } /* switch(n->value) */
1389 } /* while( goi->argc ) */
1391 /* Did we get all the options? */
1394 Jim_SetResult_sprintf( goi
->interp
,
1395 "newtap: %s missing required parameters",
1397 /* TODO: Tell user what is missing :-( */
1398 /* no memory leaks pelase */
1399 free(((void *)(pTap
->expected_ids
)));
1400 free(((void *)(pTap
->chip
)));
1401 free(((void *)(pTap
->tapname
)));
1402 free(((void *)(pTap
->dotted_name
)));
1403 free(((void *)(pTap
)));
1407 pTap
->expected
= malloc( pTap
->ir_length
);
1408 pTap
->expected_mask
= malloc( pTap
->ir_length
);
1409 pTap
->cur_instr
= malloc( pTap
->ir_length
);
1411 buf_set_u32( pTap
->expected
,
1414 pTap
->ir_capture_value
);
1415 buf_set_u32( pTap
->expected_mask
,
1418 pTap
->ir_capture_mask
);
1419 buf_set_ones( pTap
->cur_instr
,
1424 jtag_register_event_callback(jtag_reset_callback
, pTap
);
1426 ppTap
= &(jtag_all_taps
);
1427 while( (*ppTap
) != NULL
){
1428 ppTap
= &((*ppTap
)->next_tap
);
1432 static int n_taps
= 0;
1433 pTap
->abs_chain_position
= n_taps
++;
1435 LOG_DEBUG( "Created Tap: %s @ abs position %d, irlen %d, capture: 0x%x mask: 0x%x",
1436 (*ppTap
)->dotted_name
,
1437 (*ppTap
)->abs_chain_position
,
1438 (*ppTap
)->ir_length
,
1439 (*ppTap
)->ir_capture_value
,
1440 (*ppTap
)->ir_capture_mask
);
1445 static int jim_jtag_command( Jim_Interp
*interp
, int argc
, Jim_Obj
*const *argv
)
1451 struct command_context_s
*context
;
1455 JTAG_CMD_INIT_RESET
,
1458 JTAG_CMD_TAPDISABLE
,
1459 JTAG_CMD_TAPISENABLED
,
1464 const Jim_Nvp jtag_cmds
[] = {
1465 { .name
= "interface" , .value
= JTAG_CMD_INTERFACE
},
1466 { .name
= "arp_init-reset", .value
= JTAG_CMD_INIT_RESET
},
1467 { .name
= "newtap" , .value
= JTAG_CMD_NEWTAP
},
1468 { .name
= "tapisenabled" , .value
= JTAG_CMD_TAPISENABLED
},
1469 { .name
= "tapenable" , .value
= JTAG_CMD_TAPENABLE
},
1470 { .name
= "tapdisable" , .value
= JTAG_CMD_TAPDISABLE
},
1471 { .name
= "configure" , .value
= JTAG_CMD_CONFIGURE
},
1472 { .name
= "cget" , .value
= JTAG_CMD_CGET
},
1474 { .name
= NULL
, .value
= -1 },
1477 context
= Jim_GetAssocData(interp
, "context");
1478 /* go past the command */
1479 Jim_GetOpt_Setup( &goi
, interp
, argc
-1, argv
+1 );
1481 e
= Jim_GetOpt_Nvp( &goi
, jtag_cmds
, &n
);
1483 Jim_GetOpt_NvpUnknown( &goi
, jtag_cmds
, 0 );
1486 Jim_SetEmptyResult( goi
.interp
);
1488 case JTAG_CMD_INTERFACE
:
1489 /* return the name of the interface */
1490 /* TCL code might need to know the exact type... */
1491 /* FUTURE: we allow this as a means to "set" the interface. */
1492 if( goi
.argc
!= 0 ){
1493 Jim_WrongNumArgs( goi
.interp
, 1, goi
.argv
-1, "(no params)");
1496 Jim_SetResultString( goi
.interp
, jtag_interface
->name
, -1 );
1498 case JTAG_CMD_INIT_RESET
:
1499 if( goi
.argc
!= 0 ){
1500 Jim_WrongNumArgs( goi
.interp
, 1, goi
.argv
-1, "(no params)");
1503 e
= jtag_init_reset(context
);
1504 if( e
!= ERROR_OK
){
1505 Jim_SetResult_sprintf( goi
.interp
, "error: %d", e
);
1509 case JTAG_CMD_NEWTAP
:
1510 return jim_newtap_cmd( &goi
);
1512 case JTAG_CMD_TAPISENABLED
:
1513 case JTAG_CMD_TAPENABLE
:
1514 case JTAG_CMD_TAPDISABLE
:
1515 if( goi
.argc
!= 1 ){
1516 Jim_SetResultString( goi
.interp
, "Too many parameters",-1 );
1522 t
= jtag_TapByJimObj( goi
.interp
, goi
.argv
[0] );
1527 case JTAG_CMD_TAPISENABLED
:
1530 case JTAG_CMD_TAPENABLE
:
1531 jtag_tap_handle_event( t
, JTAG_TAP_EVENT_ENABLE
);
1535 case JTAG_CMD_TAPDISABLE
:
1536 jtag_tap_handle_event( t
, JTAG_TAP_EVENT_DISABLE
);
1541 Jim_SetResult( goi
.interp
, Jim_NewIntObj( goi
.interp
, e
) );
1548 Jim_WrongNumArgs( goi
.interp
, 0, NULL
, "?tap-name? -option ...");
1555 Jim_GetOpt_Obj(&goi
, &o
);
1556 t
= jtag_TapByJimObj( goi
.interp
, o
);
1561 goi
.isconfigure
= 0;
1562 return jtag_tap_configure_cmd( &goi
, t
);
1566 case JTAG_CMD_CONFIGURE
:
1568 Jim_WrongNumArgs( goi
.interp
, 0, NULL
, "?tap-name? -option ?VALUE? ...");
1575 Jim_GetOpt_Obj(&goi
, &o
);
1576 t
= jtag_TapByJimObj( goi
.interp
, o
);
1581 goi
.isconfigure
= 1;
1582 return jtag_tap_configure_cmd( &goi
, t
);
1589 int jtag_register_commands(struct command_context_s
*cmd_ctx
)
1591 register_jim( cmd_ctx
, "jtag", jim_jtag_command
, "perform jtag tap actions");
1593 register_command(cmd_ctx
, NULL
, "interface", handle_interface_command
,
1594 COMMAND_CONFIG
, "try to configure interface");
1595 register_command(cmd_ctx
, NULL
, "jtag_speed", handle_jtag_speed_command
,
1596 COMMAND_ANY
, "(DEPRECATED) set jtag speed (if supported)");
1597 register_command(cmd_ctx
, NULL
, "jtag_khz", handle_jtag_khz_command
,
1598 COMMAND_ANY
, "set maximum jtag speed (if supported); "
1599 "parameter is maximum khz, or 0 for adaptive clocking (RTCK).");
1600 register_command(cmd_ctx
, NULL
, "jtag_device", handle_jtag_device_command
,
1601 COMMAND_CONFIG
, "(DEPRECATED) jtag_device <ir_length> <ir_expected> <ir_mask>");
1602 register_command(cmd_ctx
, NULL
, "reset_config", handle_reset_config_command
,
1604 "[none/trst_only/srst_only/trst_and_srst] [srst_pulls_trst/trst_pulls_srst] [combined/separate] [trst_push_pull/trst_open_drain] [srst_push_pull/srst_open_drain]");
1605 register_command(cmd_ctx
, NULL
, "jtag_nsrst_delay", handle_jtag_nsrst_delay_command
,
1606 COMMAND_ANY
, "jtag_nsrst_delay <ms> - delay after deasserting srst in ms");
1607 register_command(cmd_ctx
, NULL
, "jtag_ntrst_delay", handle_jtag_ntrst_delay_command
,
1608 COMMAND_ANY
, "jtag_ntrst_delay <ms> - delay after deasserting trst in ms");
1610 register_command(cmd_ctx
, NULL
, "scan_chain", handle_scan_chain_command
,
1611 COMMAND_EXEC
, "print current scan chain configuration");
1613 register_command(cmd_ctx
, NULL
, "endstate", handle_endstate_command
,
1614 COMMAND_EXEC
, "finish JTAG operations in <tap_state>");
1615 register_command(cmd_ctx
, NULL
, "jtag_reset", handle_jtag_reset_command
,
1616 COMMAND_EXEC
, "toggle reset lines <trst> <srst>");
1617 register_command(cmd_ctx
, NULL
, "runtest", handle_runtest_command
,
1618 COMMAND_EXEC
, "move to Run-Test/Idle, and execute <num_cycles>");
1619 register_command(cmd_ctx
, NULL
, "irscan", handle_irscan_command
,
1620 COMMAND_EXEC
, "execute IR scan <device> <instr> [dev2] [instr2] ...");
1621 register_jim(cmd_ctx
, "drscan", Jim_Command_drscan
, "execute DR scan <device> <num_bits> <value> <num_bits1> <value2> ...");
1622 register_jim(cmd_ctx
, "flush_count", Jim_Command_flush_count
, "returns number of times the JTAG queue has been flushed");
1624 register_command(cmd_ctx
, NULL
, "verify_ircapture", handle_verify_ircapture_command
,
1625 COMMAND_ANY
, "verify value captured during Capture-IR <enable|disable>");
1626 register_command(cmd_ctx
, NULL
, "verify_jtag", handle_verify_jtag_command
,
1627 COMMAND_ANY
, "verify value capture <enable|disable>");
1628 register_command(cmd_ctx
, NULL
, "tms_sequence", handle_tms_sequence_command
,
1629 COMMAND_ANY
, "choose short(default) or long tms_sequence <short|long>");
1633 int jtag_interface_init(struct command_context_s
*cmd_ctx
)
1638 if (!jtag_interface
)
1640 /* nothing was previously specified by "interface" command */
1641 LOG_ERROR("JTAG interface has to be specified, see \"interface\" command");
1642 return ERROR_JTAG_INVALID_INTERFACE
;
1646 jtag_interface
->khz(speed_khz
, &jtag_speed
);
1650 if (jtag_interface
->init() != ERROR_OK
)
1651 return ERROR_JTAG_INIT_FAILED
;
1653 jtag
= jtag_interface
;
1657 static int jtag_init_inner(struct command_context_s
*cmd_ctx
)
1662 LOG_DEBUG("Init JTAG chain");
1664 tap
= jtag_NextEnabledTap(NULL
);
1666 LOG_ERROR("There are no enabled taps?");
1667 return ERROR_JTAG_INIT_FAILED
;
1671 if ((retval
=jtag_execute_queue())!=ERROR_OK
)
1674 /* examine chain first, as this could discover the real chain layout */
1675 if (jtag_examine_chain() != ERROR_OK
)
1677 LOG_ERROR("trying to validate configured JTAG chain anyway...");
1680 if (jtag_validate_chain() != ERROR_OK
)
1682 LOG_WARNING("Could not validate JTAG chain, continuing anyway...");
1688 int jtag_interface_quit(void)
1690 if (!jtag
|| !jtag
->quit
)
1693 // close the JTAG interface
1694 int result
= jtag
->quit();
1695 if (ERROR_OK
!= result
)
1696 LOG_ERROR("failed: %d", result
);
1702 int jtag_init_reset(struct command_context_s
*cmd_ctx
)
1706 if ((retval
=jtag_interface_init(cmd_ctx
)) != ERROR_OK
)
1709 LOG_DEBUG("Trying to bring the JTAG controller to life by asserting TRST / RESET");
1711 /* Reset can happen after a power cycle.
1713 * Ideally we would only assert TRST or run RESET before the target reset.
1715 * However w/srst_pulls_trst, trst is asserted together with the target
1716 * reset whether we want it or not.
1718 * NB! Some targets have JTAG circuitry disabled until a
1719 * trst & srst has been asserted.
1721 * NB! here we assume nsrst/ntrst delay are sufficient!
1723 * NB! order matters!!!! srst *can* disconnect JTAG circuitry
1726 jtag_add_reset(1, 0); /* RESET or TRST */
1727 if (jtag_reset_config
& RESET_HAS_SRST
)
1729 jtag_add_reset(1, 1);
1730 if ((jtag_reset_config
& RESET_SRST_PULLS_TRST
)==0)
1731 jtag_add_reset(0, 1);
1733 jtag_add_reset(0, 0);
1734 if ((retval
= jtag_execute_queue()) != ERROR_OK
)
1737 /* Check that we can communication on the JTAG chain + eventually we want to
1738 * be able to perform enumeration only after OpenOCD has started
1739 * telnet and GDB server
1741 * That would allow users to more easily perform any magic they need to before
1744 return jtag_init_inner(cmd_ctx
);
1747 int jtag_init(struct command_context_s
*cmd_ctx
)
1750 if ((retval
=jtag_interface_init(cmd_ctx
)) != ERROR_OK
)
1752 if (jtag_init_inner(cmd_ctx
)==ERROR_OK
)
1756 return jtag_init_reset(cmd_ctx
);
1759 static int default_khz(int khz
, int *jtag_speed
)
1761 LOG_ERROR("Translation from khz to jtag_speed not implemented");
1765 static int default_speed_div(int speed
, int *khz
)
1767 LOG_ERROR("Translation from jtag_speed to khz not implemented");
1771 static int default_power_dropout(int *dropout
)
1773 *dropout
=0; /* by default we can't detect power dropout */
1777 static int default_srst_asserted(int *srst_asserted
)
1779 *srst_asserted
=0; /* by default we can't detect srst asserted */
1783 static int handle_interface_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
1788 /* check whether the interface is already configured */
1791 LOG_WARNING("Interface already configured, ignoring");
1795 /* interface name is a mandatory argument */
1796 if (argc
< 1 || args
[0][0] == '\0')
1798 return ERROR_COMMAND_SYNTAX_ERROR
;
1801 for (i
=0; jtag_interfaces
[i
]; i
++)
1803 if (strcmp(args
[0], jtag_interfaces
[i
]->name
) == 0)
1805 if ((retval
= jtag_interfaces
[i
]->register_commands(cmd_ctx
)) != ERROR_OK
)
1810 jtag_interface
= jtag_interfaces
[i
];
1812 if (jtag_interface
->khz
== NULL
)
1814 jtag_interface
->khz
= default_khz
;
1816 if (jtag_interface
->speed_div
== NULL
)
1818 jtag_interface
->speed_div
= default_speed_div
;
1820 if (jtag_interface
->power_dropout
== NULL
)
1822 jtag_interface
->power_dropout
= default_power_dropout
;
1824 if (jtag_interface
->srst_asserted
== NULL
)
1826 jtag_interface
->srst_asserted
= default_srst_asserted
;
1833 /* no valid interface was found (i.e. the configuration option,
1834 * didn't match one of the compiled-in interfaces
1836 LOG_ERROR("No valid jtag interface found (%s)", args
[0]);
1837 LOG_ERROR("compiled-in jtag interfaces:");
1838 for (i
= 0; jtag_interfaces
[i
]; i
++)
1840 LOG_ERROR("%i: %s", i
, jtag_interfaces
[i
]->name
);
1843 return ERROR_JTAG_INVALID_INTERFACE
;
1846 static int handle_jtag_device_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
1850 Jim_Obj
*newargs
[ 10 ];
1853 * argv[-1] = command
1854 * argv[ 0] = ir length
1855 * argv[ 1] = ir capture
1856 * argv[ 2] = ir mask
1857 * argv[ 3] = not actually used by anything but in the docs
1861 command_print( cmd_ctx
, "OLD DEPRECATED SYNTAX: Please use the NEW syntax");
1864 command_print( cmd_ctx
, "OLD SYNTAX: DEPRECATED - translating to new syntax");
1865 command_print( cmd_ctx
, "jtag newtap CHIP TAP -irlen %s -ircapture %s -irvalue %s",
1869 command_print( cmd_ctx
, "Example: STM32 has 2 taps, the cortexM3(len4) + boundaryscan(len5)");
1870 command_print( cmd_ctx
, "jtag newtap stm32 cortexm3 ....., thus creating the tap: \"stm32.cortexm3\"");
1871 command_print( cmd_ctx
, "jtag newtap stm32 boundary ....., and the tap: \"stm32.boundary\"");
1872 command_print( cmd_ctx
, "And then refer to the taps by the dotted name.");
1874 newargs
[0] = Jim_NewStringObj( interp
, "jtag", -1 );
1875 newargs
[1] = Jim_NewStringObj( interp
, "newtap", -1 );
1876 sprintf( buf
, "chip%d", jtag_NumTotalTaps() );
1877 newargs
[2] = Jim_NewStringObj( interp
, buf
, -1 );
1878 sprintf( buf
, "tap%d", jtag_NumTotalTaps() );
1879 newargs
[3] = Jim_NewStringObj( interp
, buf
, -1 );
1880 newargs
[4] = Jim_NewStringObj( interp
, "-irlen", -1 );
1881 newargs
[5] = Jim_NewStringObj( interp
, args
[0], -1 );
1882 newargs
[6] = Jim_NewStringObj( interp
, "-ircapture", -1 );
1883 newargs
[7] = Jim_NewStringObj( interp
, args
[1], -1 );
1884 newargs
[8] = Jim_NewStringObj( interp
, "-irmask", -1 );
1885 newargs
[9] = Jim_NewStringObj( interp
, args
[2], -1 );
1887 command_print( cmd_ctx
, "NEW COMMAND:");
1888 sprintf( buf
, "%s %s %s %s %s %s %s %s %s %s",
1889 Jim_GetString( newargs
[0], NULL
),
1890 Jim_GetString( newargs
[1], NULL
),
1891 Jim_GetString( newargs
[2], NULL
),
1892 Jim_GetString( newargs
[3], NULL
),
1893 Jim_GetString( newargs
[4], NULL
),
1894 Jim_GetString( newargs
[5], NULL
),
1895 Jim_GetString( newargs
[6], NULL
),
1896 Jim_GetString( newargs
[7], NULL
),
1897 Jim_GetString( newargs
[8], NULL
),
1898 Jim_GetString( newargs
[9], NULL
) );
1900 e
= jim_jtag_command( interp
, 10, newargs
);
1902 command_print( cmd_ctx
, "%s", Jim_GetString( Jim_GetResult(interp
), NULL
) );
1907 static int handle_scan_chain_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
1911 tap
= jtag_all_taps
;
1912 command_print(cmd_ctx
, " TapName | Enabled | IdCode Expected IrLen IrCap IrMask Instr ");
1913 command_print(cmd_ctx
, "---|--------------------|---------|------------|------------|------|------|------|---------");
1916 u32 expected
, expected_mask
, cur_instr
, ii
;
1917 expected
= buf_get_u32(tap
->expected
, 0, tap
->ir_length
);
1918 expected_mask
= buf_get_u32(tap
->expected_mask
, 0, tap
->ir_length
);
1919 cur_instr
= buf_get_u32(tap
->cur_instr
, 0, tap
->ir_length
);
1921 command_print(cmd_ctx
,
1922 "%2d | %-18s | %c | 0x%08x | 0x%08x | 0x%02x | 0x%02x | 0x%02x | 0x%02x",
1923 tap
->abs_chain_position
,
1925 tap
->enabled
? 'Y' : 'n',
1927 (tap
->expected_ids_cnt
> 0 ? tap
->expected_ids
[0] : 0),
1933 for (ii
= 1; ii
< tap
->expected_ids_cnt
; ii
++) {
1934 command_print(cmd_ctx
, " | | | | 0x%08x | | | | ",
1935 tap
->expected_ids
[ii
]);
1938 tap
= tap
->next_tap
;
1944 static int handle_reset_config_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
1950 return ERROR_COMMAND_SYNTAX_ERROR
;
1952 /* Original versions cared about the order of these tokens:
1953 * reset_config signals [combination [trst_type [srst_type]]]
1954 * They also clobbered the previous configuration even on error.
1956 * Here we don't care about the order, and only change values
1957 * which have been explicitly specified.
1959 for (; argc
; argc
--, args
++) {
1964 m
= RESET_HAS_TRST
| RESET_HAS_SRST
;
1965 if (strcmp(*args
, "none") == 0)
1967 else if (strcmp(*args
, "trst_only") == 0)
1968 tmp
= RESET_HAS_TRST
;
1969 else if (strcmp(*args
, "srst_only") == 0)
1970 tmp
= RESET_HAS_SRST
;
1971 else if (strcmp(*args
, "trst_and_srst") == 0)
1972 tmp
= RESET_HAS_TRST
| RESET_HAS_SRST
;
1976 LOG_ERROR("extra reset_config %s spec (%s)",
1978 return ERROR_INVALID_ARGUMENTS
;
1983 /* combination (options for broken wiring) */
1984 m
= RESET_SRST_PULLS_TRST
| RESET_TRST_PULLS_SRST
;
1985 if (strcmp(*args
, "separate") == 0)
1986 /* separate reset lines - default */;
1987 else if (strcmp(*args
, "srst_pulls_trst") == 0)
1988 tmp
|= RESET_SRST_PULLS_TRST
;
1989 else if (strcmp(*args
, "trst_pulls_srst") == 0)
1990 tmp
|= RESET_TRST_PULLS_SRST
;
1991 else if (strcmp(*args
, "combined") == 0)
1992 tmp
|= RESET_SRST_PULLS_TRST
| RESET_TRST_PULLS_SRST
;
1996 LOG_ERROR("extra reset_config %s spec (%s)",
1997 "combination", *args
);
1998 return ERROR_INVALID_ARGUMENTS
;
2003 /* trst_type (NOP without HAS_TRST) */
2004 m
= RESET_TRST_OPEN_DRAIN
;
2005 if (strcmp(*args
, "trst_open_drain") == 0)
2006 tmp
|= RESET_TRST_OPEN_DRAIN
;
2007 else if (strcmp(*args
, "trst_push_pull") == 0)
2008 /* push/pull from adapter - default */;
2012 LOG_ERROR("extra reset_config %s spec (%s)",
2013 "trst_type", *args
);
2014 return ERROR_INVALID_ARGUMENTS
;
2019 /* srst_type (NOP without HAS_SRST) */
2020 m
|= RESET_SRST_PUSH_PULL
;
2021 if (strcmp(*args
, "srst_push_pull") == 0)
2022 tmp
|= RESET_SRST_PUSH_PULL
;
2023 else if (strcmp(*args
, "srst_open_drain") == 0)
2024 /* open drain from adapter - default */;
2028 LOG_ERROR("extra reset_config %s spec (%s)",
2029 "srst_type", *args
);
2030 return ERROR_INVALID_ARGUMENTS
;
2035 /* caller provided nonsense; fail */
2036 LOG_ERROR("unknown reset_config flag (%s)", *args
);
2037 return ERROR_INVALID_ARGUMENTS
;
2040 /* Remember the bits which were specified (mask)
2041 * and their new values (new_cfg).
2047 /* clear previous values of those bits, save new values */
2048 jtag_reset_config
&= ~mask
;
2049 jtag_reset_config
|= new_cfg
;
2054 static int handle_jtag_nsrst_delay_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
2058 LOG_ERROR("jtag_nsrst_delay <ms> command takes one required argument");
2063 jtag_nsrst_delay
= strtoul(args
[0], NULL
, 0);
2069 static int handle_jtag_ntrst_delay_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
2073 LOG_ERROR("jtag_ntrst_delay <ms> command takes one required argument");
2078 jtag_ntrst_delay
= strtoul(args
[0], NULL
, 0);
2084 static int handle_jtag_speed_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
2086 int retval
=ERROR_OK
;
2090 LOG_DEBUG("handle jtag speed");
2093 cur_speed
= jtag_speed
= strtoul(args
[0], NULL
, 0);
2095 /* this command can be called during CONFIG,
2096 * in which case jtag isn't initialized */
2099 retval
=jtag
->speed(cur_speed
);
2101 } else if (argc
== 0)
2105 return ERROR_COMMAND_SYNTAX_ERROR
;
2107 command_print(cmd_ctx
, "jtag_speed: %d", jtag_speed
);
2112 static int handle_jtag_khz_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
2114 int retval
=ERROR_OK
;
2115 LOG_DEBUG("handle jtag khz");
2119 speed_khz
= strtoul(args
[0], NULL
, 0);
2123 LOG_DEBUG("have interface set up");
2125 if ((retval
=jtag
->khz(speed_khz
, &speed_div1
))!=ERROR_OK
)
2131 cur_speed
= jtag_speed
= speed_div1
;
2133 retval
=jtag
->speed(cur_speed
);
2142 return ERROR_COMMAND_SYNTAX_ERROR
;
2147 if ((retval
=jtag
->speed_div(jtag_speed
, &speed_khz
))!=ERROR_OK
)
2153 command_print(cmd_ctx
, "RCLK - adaptive");
2156 command_print(cmd_ctx
, "%d kHz", speed_khz
);
2162 static int handle_endstate_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
2168 return ERROR_COMMAND_SYNTAX_ERROR
;
2172 state
= tap_state_by_name( args
[0] );
2174 command_print( cmd_ctx
, "Invalid state name: %s\n", args
[0] );
2175 return ERROR_COMMAND_SYNTAX_ERROR
;
2177 jtag_add_end_state(state
);
2178 jtag_execute_queue();
2180 command_print(cmd_ctx
, "current endstate: %s", tap_state_name(cmd_queue_end_state
));
2185 static int handle_jtag_reset_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
2192 return ERROR_COMMAND_SYNTAX_ERROR
;
2195 if (args
[0][0] == '1')
2197 else if (args
[0][0] == '0')
2201 return ERROR_COMMAND_SYNTAX_ERROR
;
2204 if (args
[1][0] == '1')
2206 else if (args
[1][0] == '0')
2210 return ERROR_COMMAND_SYNTAX_ERROR
;
2213 if (jtag_interface_init(cmd_ctx
) != ERROR_OK
)
2214 return ERROR_JTAG_INIT_FAILED
;
2216 jtag_add_reset(trst
, srst
);
2217 jtag_execute_queue();
2222 static int handle_runtest_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
2226 return ERROR_COMMAND_SYNTAX_ERROR
;
2229 jtag_add_runtest(strtol(args
[0], NULL
, 0), jtag_add_end_state(TAP_INVALID
));
2230 jtag_execute_queue();
2237 * For "irscan" or "drscan" commands, the "end" (really, "next") state
2238 * should be stable ... and *NOT* a shift state, otherwise free-running
2239 * jtag clocks could change the values latched by the update state.
2241 static bool scan_is_safe(tap_state_t state
)
2256 static int handle_irscan_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
2259 scan_field_t
*fields
;
2261 tap_state_t endstate
;
2263 if ((argc
< 2) || (argc
% 2))
2265 return ERROR_COMMAND_SYNTAX_ERROR
;
2268 /* optional "-endstate" "statename" at the end of the arguments,
2269 * so that e.g. IRPAUSE can let us load the data register before
2270 * entering RUN/IDLE to execute the instruction we load here.
2272 endstate
= TAP_IDLE
;
2275 /* have at least one pair of numbers. */
2276 /* is last pair the magic text? */
2277 if( 0 == strcmp( "-endstate", args
[ argc
- 2 ] ) ){
2280 cpA
= args
[ argc
-1 ];
2281 for( endstate
= 0 ; endstate
< TAP_NUM_STATES
; endstate
++ ){
2282 cpS
= tap_state_name( endstate
);
2283 if( 0 == strcmp( cpA
, cpS
) ){
2287 if( endstate
>= TAP_NUM_STATES
){
2288 return ERROR_COMMAND_SYNTAX_ERROR
;
2290 if (!scan_is_safe(endstate
))
2291 LOG_WARNING("irscan with unsafe "
2292 "endstate \"%s\"", cpA
);
2293 /* found - remove the last 2 args */
2299 int num_fields
= argc
/ 2;
2301 fields
= malloc(sizeof(scan_field_t
) * num_fields
);
2303 for (i
= 0; i
< num_fields
; i
++)
2305 tap
= jtag_TapByString( args
[i
*2] );
2308 command_print( cmd_ctx
, "Tap: %s unknown", args
[i
*2] );
2311 int field_size
= tap
->ir_length
;
2312 fields
[i
].tap
= tap
;
2313 fields
[i
].num_bits
= field_size
;
2314 fields
[i
].out_value
= malloc(CEIL(field_size
, 8));
2315 buf_set_u32(fields
[i
].out_value
, 0, field_size
, strtoul(args
[i
*2+1], NULL
, 0));
2316 fields
[i
].in_value
= NULL
;
2319 /* did we have an endstate? */
2320 jtag_add_ir_scan(num_fields
, fields
, endstate
);
2322 int retval
=jtag_execute_queue();
2324 for (i
= 0; i
< num_fields
; i
++)
2325 free(fields
[i
].out_value
);
2332 static int Jim_Command_drscan(Jim_Interp
*interp
, int argc
, Jim_Obj
*const *args
)
2335 scan_field_t
*fields
;
2337 int field_count
= 0;
2340 tap_state_t endstate
;
2343 * args[2] = num_bits
2344 * args[3] = hex string
2345 * ... repeat num bits and hex string ...
2348 * args[N-2] = "-endstate"
2349 * args[N-1] = statename
2351 if ((argc
< 4) || ((argc
% 2)!=0))
2353 Jim_WrongNumArgs(interp
, 1, args
, "wrong arguments");
2357 endstate
= TAP_IDLE
;
2359 /* validate arguments as numbers */
2361 for (i
= 2; i
< argc
; i
+=2)
2366 e
= Jim_GetLong(interp
, args
[i
], &bits
);
2367 /* If valid - try next arg */
2372 /* Not valid.. are we at the end? */
2373 if ( ((i
+2) != argc
) ){
2374 /* nope, then error */
2378 /* it could be: "-endstate FOO"
2379 * e.g. DRPAUSE so we can issue more instructions
2380 * before entering RUN/IDLE and executing them.
2383 /* get arg as a string. */
2384 cp
= Jim_GetString( args
[i
], NULL
);
2385 /* is it the magic? */
2386 if( 0 == strcmp( "-endstate", cp
) ){
2387 /* is the statename valid? */
2388 cp
= Jim_GetString( args
[i
+1], NULL
);
2390 /* see if it is a valid state name */
2391 endstate
= tap_state_by_name(cp
);
2393 /* update the error message */
2394 Jim_SetResult_sprintf(interp
,"endstate: %s invalid", cp
);
2396 if (!scan_is_safe(endstate
))
2397 LOG_WARNING("drscan with unsafe "
2398 "endstate \"%s\"", cp
);
2400 /* valid - so clear the error */
2402 /* and remove the last 2 args */
2407 /* Still an error? */
2409 return e
; /* too bad */
2411 } /* validate args */
2413 tap
= jtag_TapByJimObj( interp
, args
[1] );
2418 num_fields
=(argc
-2)/2;
2419 fields
= malloc(sizeof(scan_field_t
) * num_fields
);
2420 for (i
= 2; i
< argc
; i
+=2)
2426 Jim_GetLong(interp
, args
[i
], &bits
);
2427 str
= Jim_GetString(args
[i
+1], &len
);
2429 fields
[field_count
].tap
= tap
;
2430 fields
[field_count
].num_bits
= bits
;
2431 fields
[field_count
].out_value
= malloc(CEIL(bits
, 8));
2432 str_to_buf(str
, len
, fields
[field_count
].out_value
, bits
, 0);
2433 fields
[field_count
].in_value
= fields
[field_count
].out_value
;
2437 jtag_add_dr_scan(num_fields
, fields
, endstate
);
2439 retval
= jtag_execute_queue();
2440 if (retval
!= ERROR_OK
)
2442 Jim_SetResultString(interp
, "drscan: jtag execute failed",-1);
2447 Jim_Obj
*list
= Jim_NewListObj(interp
, NULL
, 0);
2448 for (i
= 2; i
< argc
; i
+=2)
2453 Jim_GetLong(interp
, args
[i
], &bits
);
2454 str
= buf_to_str(fields
[field_count
].in_value
, bits
, 16);
2455 free(fields
[field_count
].out_value
);
2457 Jim_ListAppendElement(interp
, list
, Jim_NewStringObj(interp
, str
, strlen(str
)));
2462 Jim_SetResult(interp
, list
);
2470 static int Jim_Command_flush_count(Jim_Interp
*interp
, int argc
, Jim_Obj
*const *args
)
2472 Jim_SetResult(interp
, Jim_NewIntObj(interp
, jtag_flush_queue_count
));
2478 static int handle_verify_ircapture_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
2482 if (strcmp(args
[0], "enable") == 0)
2484 jtag_verify_capture_ir
= 1;
2486 else if (strcmp(args
[0], "disable") == 0)
2488 jtag_verify_capture_ir
= 0;
2491 return ERROR_COMMAND_SYNTAX_ERROR
;
2493 } else if (argc
!= 0)
2495 return ERROR_COMMAND_SYNTAX_ERROR
;
2498 command_print(cmd_ctx
, "verify Capture-IR is %s", (jtag_verify_capture_ir
) ? "enabled": "disabled");
2503 static int handle_verify_jtag_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
2507 if (strcmp(args
[0], "enable") == 0)
2511 else if (strcmp(args
[0], "disable") == 0)
2516 return ERROR_COMMAND_SYNTAX_ERROR
;
2518 } else if (argc
!= 0)
2520 return ERROR_COMMAND_SYNTAX_ERROR
;
2523 command_print(cmd_ctx
, "verify jtag capture is %s", (jtag_verify
) ? "enabled": "disabled");
2529 int jtag_power_dropout(int *dropout
)
2531 return jtag
->power_dropout(dropout
);
2534 int jtag_srst_asserted(int *srst_asserted
)
2536 return jtag
->srst_asserted(srst_asserted
);
2539 void jtag_tap_handle_event( jtag_tap_t
* tap
, enum jtag_tap_event e
)
2541 jtag_tap_event_action_t
* jteap
;
2544 jteap
= tap
->event_action
;
2548 if (jteap
->event
== e
) {
2550 LOG_DEBUG( "JTAG tap: %s event: %d (%s) action: %s\n",
2553 Jim_Nvp_value2name_simple(nvp_jtag_tap_event
, e
)->name
,
2554 Jim_GetString(jteap
->body
, NULL
) );
2555 if (Jim_EvalObj(interp
, jteap
->body
) != JIM_OK
) {
2556 Jim_PrintErrorMessage(interp
);
2560 jteap
= jteap
->next
;
2564 LOG_DEBUG( "event %d %s - no action",
2566 Jim_Nvp_value2name_simple( nvp_jtag_tap_event
, e
)->name
);
2570 static int handle_tms_sequence_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
2573 return ERROR_COMMAND_SYNTAX_ERROR
;
2578 if (strcmp(args
[0], "short") == 0)
2579 use_new_table
= true;
2580 else if (strcmp(args
[0], "long") == 0)
2581 use_new_table
= false;
2583 return ERROR_COMMAND_SYNTAX_ERROR
;
2585 tap_use_new_tms_table(use_new_table
);
2588 command_print(cmd_ctx
, "tms sequence is %s",
2589 tap_uses_new_tms_table() ? "short": "long");
2595 * Function jtag_add_statemove
2596 * moves from the current state to the goal \a state. This needs
2597 * to be handled according to the xsvf spec, see the XSTATE command
2600 int jtag_add_statemove(tap_state_t goal_state
)
2602 int retval
= ERROR_OK
;
2604 tap_state_t moves
[8];
2605 tap_state_t cur_state
= cmd_queue_cur_state
;
2610 LOG_DEBUG( "cur_state=%s goal_state=%s",
2611 tap_state_name(cur_state
),
2612 tap_state_name(goal_state
) );
2615 /* From the XSVF spec, pertaining to XSTATE:
2617 For special states known as stable states (Test-Logic-Reset,
2618 Run-Test/Idle, Pause-DR, Pause- IR), an XSVF interpreter follows
2619 predefined TAP state paths when the starting state is a stable state and
2620 when the XSTATE specifies a new stable state (see the STATE command in
2621 the [Ref 5] for the TAP state paths between stable states). For
2622 non-stable states, XSTATE should specify a state that is only one TAP
2623 state transition distance from the current TAP state to avoid undefined
2624 TAP state paths. A sequence of multiple XSTATE commands can be issued to
2625 transition the TAP through a specific state path.
2628 if (goal_state
==cur_state
)
2629 ; /* nothing to do */
2631 else if( goal_state
==TAP_RESET
)
2636 else if( tap_is_state_stable(cur_state
) && tap_is_state_stable(goal_state
) )
2638 /* note: unless tms_bits holds a path that agrees with [Ref 5] in above
2639 spec, then this code is not fully conformant to the xsvf spec. This
2640 puts a burden on tap_get_tms_path() function from the xsvf spec.
2641 If in doubt, you should confirm that that burden is being met.
2644 tms_bits
= tap_get_tms_path(cur_state
, goal_state
);
2645 tms_count
= tap_get_tms_path_len(cur_state
, goal_state
);
2647 assert( (unsigned) tms_count
< DIM(moves
) );
2649 for (i
=0; i
<tms_count
; i
++, tms_bits
>>=1)
2651 bool bit
= tms_bits
& 1;
2653 cur_state
= tap_state_transition(cur_state
, bit
);
2654 moves
[i
] = cur_state
;
2657 jtag_add_pathmove(tms_count
, moves
);
2660 /* else state must be immediately reachable in one clock cycle, and does not
2661 need to be a stable state.
2663 else if( tap_state_transition(cur_state
, true) == goal_state
2664 || tap_state_transition(cur_state
, false) == goal_state
)
2666 /* move a single state */
2667 moves
[0] = goal_state
;
2668 jtag_add_pathmove( 1, moves
);
2673 retval
= ERROR_FAIL
;
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