1 /***************************************************************************
2 * Copyright (C) 2005 by Dominic Rath *
3 * Dominic.Rath@gmx.de *
5 * This program is free software; you can redistribute it and/or modify *
6 * it under the terms of the GNU General Public License as published by *
7 * the Free Software Foundation; either version 2 of the License, or *
8 * (at your option) any later version. *
10 * This program is distributed in the hope that it will be useful, *
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
13 * GNU General Public License for more details. *
15 * You should have received a copy of the GNU General Public License *
16 * along with this program; if not, write to the *
17 * Free Software Foundation, Inc., *
18 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
19 ***************************************************************************/
24 #include "replacements.h"
30 #include "interpreter.h"
36 char* tap_state_strings
[16] =
39 "sds", "cd", "sd", "e1d", "pd", "e2d", "ud",
41 "sis", "ci", "si", "e1i", "pi", "e2i", "ui"
44 typedef struct cmd_queue_page_s
48 struct cmd_queue_page_s
*next
;
51 #define CMD_QUEUE_PAGE_SIZE (1024 * 1024)
52 static cmd_queue_page_t
*cmd_queue_pages
= NULL
;
54 /* tap_move[i][j]: tap movement command to go from state i to state j
64 /* TLR RTI SD PD SI PI */
65 {0x7f, 0x00, 0x17, 0x0a, 0x1b, 0x16}, /* TLR */
66 {0x7f, 0x00, 0x25, 0x05, 0x2b, 0x0b}, /* RTI */
67 {0x7f, 0x31, 0x00, 0x01, 0x0f, 0x2f}, /* SD */
68 {0x7f, 0x30, 0x20, 0x17, 0x1e, 0x2f}, /* PD */
69 {0x7f, 0x31, 0x07, 0x17, 0x00, 0x01}, /* SI */
70 {0x7f, 0x30, 0x1c, 0x17, 0x20, 0x2f} /* PI */
73 int tap_move_map
[16] = {
74 0, -1, -1, 2, -1, 3, -1, -1,
75 1, -1, -1, 4, -1, 5, -1, -1
78 tap_transition_t tap_transitions
[16] =
80 {TAP_TLR
, TAP_RTI
}, /* TLR */
81 {TAP_SIS
, TAP_CD
}, /* SDS */
82 {TAP_E1D
, TAP_SD
}, /* CD */
83 {TAP_E1D
, TAP_SD
}, /* SD */
84 {TAP_UD
, TAP_PD
}, /* E1D */
85 {TAP_E2D
, TAP_PD
}, /* PD */
86 {TAP_UD
, TAP_SD
}, /* E2D */
87 {TAP_SDS
, TAP_RTI
}, /* UD */
88 {TAP_SDS
, TAP_RTI
}, /* RTI */
89 {TAP_TLR
, TAP_CI
}, /* SIS */
90 {TAP_E1I
, TAP_SI
}, /* CI */
91 {TAP_E1I
, TAP_SI
}, /* SI */
92 {TAP_UI
, TAP_PI
}, /* E1I */
93 {TAP_E2I
, TAP_PI
}, /* PI */
94 {TAP_UI
, TAP_SI
}, /* E2I */
95 {TAP_SDS
, TAP_RTI
} /* UI */
98 char* jtag_event_strings
[] =
106 enum tap_state end_state
= TAP_TLR
;
107 enum tap_state cur_state
= TAP_TLR
;
111 jtag_command_t
*jtag_command_queue
= NULL
;
112 jtag_command_t
**last_comand_pointer
= &jtag_command_queue
;
113 jtag_device_t
*jtag_devices
= NULL
;
114 int jtag_num_devices
= 0;
115 int jtag_ir_scan_size
= 0;
116 enum reset_types jtag_reset_config
= RESET_NONE
;
117 enum tap_state cmd_queue_end_state
= TAP_TLR
;
118 enum tap_state cmd_queue_cur_state
= TAP_TLR
;
120 int jtag_verify_capture_ir
= 1;
122 /* how long the OpenOCD should wait before attempting JTAG communication after reset lines deasserted (in ms) */
123 int jtag_nsrst_delay
= 0; /* default to no nSRST delay */
124 int jtag_ntrst_delay
= 0; /* default to no nTRST delay */
126 /* maximum number of JTAG devices expected in the chain
128 #define JTAG_MAX_CHAIN_SIZE 20
130 /* callbacks to inform high-level handlers about JTAG state changes */
131 jtag_event_callback_t
*jtag_event_callbacks
;
133 /* jtag interfaces (parport, FTDI-USB, TI-USB, ...)
135 #if BUILD_PARPORT == 1
136 extern jtag_interface_t parport_interface
;
139 #if BUILD_FT2232_FTD2XX == 1
140 extern jtag_interface_t ft2232_interface
;
143 #if BUILD_FT2232_LIBFTDI == 1
144 extern jtag_interface_t ft2232_interface
;
147 #if BUILD_AMTJTAGACCEL == 1
148 extern jtag_interface_t amt_jtagaccel_interface
;
151 #if BUILD_EP93XX == 1
152 extern jtag_interface_t ep93xx_interface
;
155 #if BUILD_AT91RM9200 == 1
156 extern jtag_interface_t at91rm9200_interface
;
159 #if BUILD_GW16012 == 1
160 extern jtag_interface_t gw16012_interface
;
163 jtag_interface_t
*jtag_interfaces
[] = {
164 #if BUILD_PARPORT == 1
167 #if BUILD_FT2232_FTD2XX == 1
170 #if BUILD_FT2232_LIBFTDI == 1
173 #if BUILD_AMTJTAGACCEL == 1
174 &amt_jtagaccel_interface
,
176 #if BUILD_EP93XX == 1
179 #if BUILD_AT91RM9200 == 1
180 &at91rm9200_interface
,
182 #if BUILD_GW16012 == 1
188 jtag_interface_t
*jtag
= NULL
;
191 char* jtag_interface
= NULL
;
195 /* forward declarations */
196 int jtag_add_ir_scan(int num_fields
, scan_field_t
*fields
, enum tap_state endstate
, error_handler_t
*error_handler
);
197 int jtag_add_dr_scan(int num_fields
, scan_field_t
*fields
, enum tap_state endstate
, error_handler_t
*error_handler
);
198 int jtag_add_plain_ir_scan(int num_fields
, scan_field_t
*fields
, enum tap_state endstate
, error_handler_t
*error_handler
);
199 int jtag_add_plain_dr_scan(int num_fields
, scan_field_t
*fields
, enum tap_state endstate
, error_handler_t
*error_handler
);
200 int jtag_add_statemove(enum tap_state endstate
);
201 int jtag_add_pathmove(int num_states
, enum tap_state
*path
);
202 int jtag_add_runtest(int num_cycles
, enum tap_state endstate
);
203 int jtag_add_reset(int trst
, int srst
);
204 int jtag_add_end_state(enum tap_state endstate
);
205 int jtag_add_sleep(u32 us
);
206 int jtag_execute_queue(void);
207 int jtag_cancel_queue(void);
210 int handle_interface_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
);
211 int handle_jtag_speed_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
);
212 int handle_jtag_device_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
);
213 int handle_reset_config_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
);
214 int handle_jtag_nsrst_delay_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
);
215 int handle_jtag_ntrst_delay_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
);
217 int handle_scan_chain_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
);
219 int handle_endstate_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
);
220 int handle_jtag_reset_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
);
221 int handle_runtest_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
);
222 int handle_statemove_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
);
223 int handle_irscan_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
);
224 int handle_drscan_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
);
226 int handle_verify_ircapture_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
);
228 int jtag_register_event_callback(int (*callback
)(enum jtag_event event
, void *priv
), void *priv
)
230 jtag_event_callback_t
**callbacks_p
= &jtag_event_callbacks
;
232 if (callback
== NULL
)
234 return ERROR_INVALID_ARGUMENTS
;
239 while ((*callbacks_p
)->next
)
240 callbacks_p
= &((*callbacks_p
)->next
);
241 callbacks_p
= &((*callbacks_p
)->next
);
244 (*callbacks_p
) = malloc(sizeof(jtag_event_callback_t
));
245 (*callbacks_p
)->callback
= callback
;
246 (*callbacks_p
)->priv
= priv
;
247 (*callbacks_p
)->next
= NULL
;
252 int jtag_unregister_event_callback(int (*callback
)(enum jtag_event event
, void *priv
))
254 jtag_event_callback_t
**callbacks_p
= &jtag_event_callbacks
;
256 if (callback
== NULL
)
258 return ERROR_INVALID_ARGUMENTS
;
263 jtag_event_callback_t
**next
= &((*callbacks_p
)->next
);
264 if ((*callbacks_p
)->callback
== callback
)
267 *callbacks_p
= *next
;
275 int jtag_call_event_callbacks(enum jtag_event event
)
277 jtag_event_callback_t
*callback
= jtag_event_callbacks
;
279 DEBUG("jtag event: %s", jtag_event_strings
[event
]);
283 callback
->callback(event
, callback
->priv
);
284 callback
= callback
->next
;
290 /* returns a pointer to the pointer of the last command in queue
291 * this may be a pointer to the root pointer (jtag_command_queue)
292 * or to the next member of the last but one command
294 jtag_command_t
** jtag_get_last_command_p(void)
296 /* jtag_command_t *cmd = jtag_command_queue;
302 return &jtag_command_queue;
306 return last_comand_pointer
;
309 /* returns a pointer to the n-th device in the scan chain */
310 jtag_device_t
* jtag_get_device(int num
)
312 jtag_device_t
*device
= jtag_devices
;
319 device
= device
->next
;
326 void* cmd_queue_alloc(size_t size
)
328 cmd_queue_page_t
**p_page
= &cmd_queue_pages
;
333 while ((*p_page
)->next
)
334 p_page
= &((*p_page
)->next
);
335 if (CMD_QUEUE_PAGE_SIZE
- (*p_page
)->used
< size
)
336 p_page
= &((*p_page
)->next
);
341 *p_page
= malloc(sizeof(cmd_queue_page_t
));
343 (*p_page
)->address
= malloc(CMD_QUEUE_PAGE_SIZE
);
344 (*p_page
)->next
= NULL
;
347 offset
= (*p_page
)->used
;
348 (*p_page
)->used
+= size
;
350 return ((*p_page
)->address
) + offset
;
353 void cmd_queue_free()
355 cmd_queue_page_t
*page
= cmd_queue_pages
;
359 cmd_queue_page_t
*last
= page
;
365 cmd_queue_pages
= NULL
;
368 int jtag_add_ir_scan(int num_fields
, scan_field_t
*fields
, enum tap_state state
, error_handler_t
*error_handler
)
370 jtag_command_t
**last_cmd
;
371 jtag_device_t
*device
;
377 WARNING("JTAG command queued, while TRST is low (TAP in reset)");
378 return ERROR_JTAG_TRST_ASSERTED
;
381 last_cmd
= jtag_get_last_command_p();
383 /* allocate memory for a new list member */
384 *last_cmd
= cmd_queue_alloc(sizeof(jtag_command_t
));
385 (*last_cmd
)->next
= NULL
;
386 last_comand_pointer
= &((*last_cmd
)->next
);
387 (*last_cmd
)->type
= JTAG_SCAN
;
389 /* allocate memory for ir scan command */
390 (*last_cmd
)->cmd
.scan
= cmd_queue_alloc(sizeof(scan_command_t
));
391 (*last_cmd
)->cmd
.scan
->ir_scan
= 1;
392 (*last_cmd
)->cmd
.scan
->num_fields
= jtag_num_devices
; /* one field per device */
393 (*last_cmd
)->cmd
.scan
->fields
= cmd_queue_alloc(jtag_num_devices
* sizeof(scan_field_t
));
394 (*last_cmd
)->cmd
.scan
->end_state
= state
;
397 (*last_cmd
)->cmd
.scan
->error_handler
= cmd_queue_alloc(sizeof(error_handler_t
));
398 *(*last_cmd
)->cmd
.scan
->error_handler
= *error_handler
;
402 (*last_cmd
)->cmd
.scan
->error_handler
= NULL
;
406 cmd_queue_end_state
= state
;
408 if (cmd_queue_cur_state
== TAP_TLR
&& cmd_queue_end_state
!= TAP_TLR
)
409 jtag_call_event_callbacks(JTAG_TRST_RELEASED
);
411 if (cmd_queue_end_state
== TAP_TLR
)
412 jtag_call_event_callbacks(JTAG_TRST_ASSERTED
);
414 cmd_queue_cur_state
= cmd_queue_end_state
;
416 for (i
=0; i
< jtag_num_devices
; i
++)
419 device
= jtag_get_device(i
);
420 scan_size
= device
->ir_length
;
421 (*last_cmd
)->cmd
.scan
->fields
[i
].device
= i
;
422 (*last_cmd
)->cmd
.scan
->fields
[i
].num_bits
= scan_size
;
423 (*last_cmd
)->cmd
.scan
->fields
[i
].in_value
= NULL
;
424 if (jtag_verify_capture_ir
)
426 (*last_cmd
)->cmd
.scan
->fields
[i
].in_check_value
= buf_cpy(device
->expected
, cmd_queue_alloc(CEIL(scan_size
, 8)), scan_size
);
427 (*last_cmd
)->cmd
.scan
->fields
[i
].in_check_mask
= buf_cpy(device
->expected_mask
, cmd_queue_alloc(CEIL(scan_size
, 8)), scan_size
);
431 (*last_cmd
)->cmd
.scan
->fields
[i
].in_check_value
= NULL
;
432 (*last_cmd
)->cmd
.scan
->fields
[i
].in_check_mask
= NULL
;
434 (*last_cmd
)->cmd
.scan
->fields
[i
].in_handler
= NULL
;
435 (*last_cmd
)->cmd
.scan
->fields
[i
].in_handler_priv
= NULL
;
437 /* search the list */
438 for (j
=0; j
< num_fields
; j
++)
440 if (i
== fields
[j
].device
)
443 (*last_cmd
)->cmd
.scan
->fields
[i
].out_value
= buf_cpy(fields
[j
].out_value
, cmd_queue_alloc(CEIL(scan_size
, 8)), scan_size
);
444 (*last_cmd
)->cmd
.scan
->fields
[i
].out_mask
= buf_cpy(fields
[j
].out_mask
, cmd_queue_alloc(CEIL(scan_size
, 8)), scan_size
);
453 /* if a device isn't listed, set it to BYPASS */
454 (*last_cmd
)->cmd
.scan
->fields
[i
].out_value
= buf_set_ones(cmd_queue_alloc(CEIL(scan_size
, 8)), scan_size
);
455 (*last_cmd
)->cmd
.scan
->fields
[i
].out_mask
= NULL
;
460 /* update device information */
461 buf_cpy((*last_cmd
)->cmd
.scan
->fields
[i
].out_value
, jtag_get_device(i
)->cur_instr
, scan_size
);
467 int jtag_add_plain_ir_scan(int num_fields
, scan_field_t
*fields
, enum tap_state state
, error_handler_t
*error_handler
)
469 jtag_command_t
**last_cmd
;
474 WARNING("JTAG command queued, while TRST is low (TAP in reset)");
475 return ERROR_JTAG_TRST_ASSERTED
;
478 last_cmd
= jtag_get_last_command_p();
480 /* allocate memory for a new list member */
481 *last_cmd
= cmd_queue_alloc(sizeof(jtag_command_t
));
482 (*last_cmd
)->next
= NULL
;
483 last_comand_pointer
= &((*last_cmd
)->next
);
484 (*last_cmd
)->type
= JTAG_SCAN
;
486 /* allocate memory for ir scan command */
487 (*last_cmd
)->cmd
.scan
= cmd_queue_alloc(sizeof(scan_command_t
));
488 (*last_cmd
)->cmd
.scan
->ir_scan
= 1;
489 (*last_cmd
)->cmd
.scan
->num_fields
= num_fields
;
490 (*last_cmd
)->cmd
.scan
->fields
= cmd_queue_alloc(num_fields
* sizeof(scan_field_t
));
491 (*last_cmd
)->cmd
.scan
->end_state
= state
;
494 (*last_cmd
)->cmd
.scan
->error_handler
= cmd_queue_alloc(sizeof(error_handler_t
));
495 *(*last_cmd
)->cmd
.scan
->error_handler
= *error_handler
;
499 (*last_cmd
)->cmd
.scan
->error_handler
= NULL
;
503 cmd_queue_end_state
= state
;
505 if (cmd_queue_cur_state
== TAP_TLR
&& cmd_queue_end_state
!= TAP_TLR
)
506 jtag_call_event_callbacks(JTAG_TRST_RELEASED
);
508 if (cmd_queue_end_state
== TAP_TLR
)
509 jtag_call_event_callbacks(JTAG_TRST_ASSERTED
);
511 cmd_queue_cur_state
= cmd_queue_end_state
;
513 for (i
= 0; i
< num_fields
; i
++)
515 int num_bits
= fields
[i
].num_bits
;
516 int num_bytes
= CEIL(fields
[i
].num_bits
, 8);
517 (*last_cmd
)->cmd
.scan
->fields
[i
].device
= fields
[i
].device
;
518 (*last_cmd
)->cmd
.scan
->fields
[i
].num_bits
= num_bits
;
519 (*last_cmd
)->cmd
.scan
->fields
[i
].out_value
= buf_cpy(fields
[i
].out_value
, cmd_queue_alloc(num_bytes
), num_bits
);
520 (*last_cmd
)->cmd
.scan
->fields
[i
].out_mask
= buf_cpy(fields
[i
].out_mask
, cmd_queue_alloc(num_bytes
), num_bits
);
521 (*last_cmd
)->cmd
.scan
->fields
[i
].in_value
= fields
[i
].in_value
;
522 (*last_cmd
)->cmd
.scan
->fields
[i
].in_check_value
= buf_cpy(fields
[i
].in_check_value
, cmd_queue_alloc(num_bytes
), num_bits
);
523 (*last_cmd
)->cmd
.scan
->fields
[i
].in_check_mask
= buf_cpy(fields
[i
].in_check_mask
, cmd_queue_alloc(num_bytes
), num_bits
);
524 (*last_cmd
)->cmd
.scan
->fields
[i
].in_handler
= NULL
;
525 (*last_cmd
)->cmd
.scan
->fields
[i
].in_handler_priv
= NULL
;
530 int jtag_add_dr_scan(int num_fields
, scan_field_t
*fields
, enum tap_state state
, error_handler_t
*error_handler
)
533 int bypass_devices
= 0;
535 jtag_command_t
**last_cmd
= jtag_get_last_command_p();
536 jtag_device_t
*device
= jtag_devices
;
541 WARNING("JTAG command queued, while TRST is low (TAP in reset)");
542 return ERROR_JTAG_TRST_ASSERTED
;
545 /* count devices in bypass */
550 device
= device
->next
;
553 /* allocate memory for a new list member */
554 *last_cmd
= cmd_queue_alloc(sizeof(jtag_command_t
));
555 last_comand_pointer
= &((*last_cmd
)->next
);
556 (*last_cmd
)->next
= NULL
;
557 (*last_cmd
)->type
= JTAG_SCAN
;
559 /* allocate memory for dr scan command */
560 (*last_cmd
)->cmd
.scan
= cmd_queue_alloc(sizeof(scan_command_t
));
561 (*last_cmd
)->cmd
.scan
->ir_scan
= 0;
562 (*last_cmd
)->cmd
.scan
->num_fields
= num_fields
+ bypass_devices
;
563 (*last_cmd
)->cmd
.scan
->fields
= cmd_queue_alloc((num_fields
+ bypass_devices
) * sizeof(scan_field_t
));
564 (*last_cmd
)->cmd
.scan
->end_state
= state
;
567 (*last_cmd
)->cmd
.scan
->error_handler
= cmd_queue_alloc(sizeof(error_handler_t
));
568 *(*last_cmd
)->cmd
.scan
->error_handler
= *error_handler
;
572 (*last_cmd
)->cmd
.scan
->error_handler
= NULL
;
576 cmd_queue_end_state
= state
;
578 if (cmd_queue_cur_state
== TAP_TLR
&& cmd_queue_end_state
!= TAP_TLR
)
579 jtag_call_event_callbacks(JTAG_TRST_RELEASED
);
581 if (cmd_queue_end_state
== TAP_TLR
)
582 jtag_call_event_callbacks(JTAG_TRST_ASSERTED
);
584 cmd_queue_cur_state
= cmd_queue_end_state
;
586 for (i
=0; i
< jtag_num_devices
; i
++)
589 (*last_cmd
)->cmd
.scan
->fields
[field_count
].device
= i
;
591 for (j
=0; j
< num_fields
; j
++)
593 if (i
== fields
[j
].device
)
596 scan_size
= fields
[j
].num_bits
;
597 (*last_cmd
)->cmd
.scan
->fields
[field_count
].num_bits
= scan_size
;
598 (*last_cmd
)->cmd
.scan
->fields
[field_count
].out_value
= buf_cpy(fields
[j
].out_value
, cmd_queue_alloc(CEIL(scan_size
, 8)), scan_size
);
599 (*last_cmd
)->cmd
.scan
->fields
[field_count
].out_mask
= buf_cpy(fields
[j
].out_mask
, cmd_queue_alloc(CEIL(scan_size
, 8)), scan_size
);
600 (*last_cmd
)->cmd
.scan
->fields
[field_count
].in_value
= fields
[j
].in_value
;
601 (*last_cmd
)->cmd
.scan
->fields
[field_count
].in_check_value
= buf_cpy(fields
[j
].in_check_value
, cmd_queue_alloc(CEIL(scan_size
, 8)), scan_size
);
602 (*last_cmd
)->cmd
.scan
->fields
[field_count
].in_check_mask
= buf_cpy(fields
[j
].in_check_mask
, cmd_queue_alloc(CEIL(scan_size
, 8)), scan_size
);
603 (*last_cmd
)->cmd
.scan
->fields
[field_count
].in_handler
= fields
[j
].in_handler
;
604 (*last_cmd
)->cmd
.scan
->fields
[field_count
++].in_handler_priv
= fields
[j
].in_handler_priv
;
609 /* if a device isn't listed, the BYPASS register should be selected */
610 if (!jtag_get_device(i
)->bypass
)
612 ERROR("BUG: no scan data for a device not in BYPASS");
616 /* program the scan field to 1 bit length, and ignore it's value */
617 (*last_cmd
)->cmd
.scan
->fields
[field_count
].num_bits
= 1;
618 (*last_cmd
)->cmd
.scan
->fields
[field_count
].out_value
= NULL
;
619 (*last_cmd
)->cmd
.scan
->fields
[field_count
].out_mask
= NULL
;
620 (*last_cmd
)->cmd
.scan
->fields
[field_count
].in_value
= NULL
;
621 (*last_cmd
)->cmd
.scan
->fields
[field_count
].in_check_value
= NULL
;
622 (*last_cmd
)->cmd
.scan
->fields
[field_count
].in_check_mask
= NULL
;
623 (*last_cmd
)->cmd
.scan
->fields
[field_count
].in_handler
= NULL
;
624 (*last_cmd
)->cmd
.scan
->fields
[field_count
++].in_handler_priv
= NULL
;
628 /* if a device is listed, the BYPASS register must not be selected */
629 if (jtag_get_device(i
)->bypass
)
631 WARNING("scan data for a device in BYPASS");
638 int jtag_add_plain_dr_scan(int num_fields
, scan_field_t
*fields
, enum tap_state state
, error_handler_t
*error_handler
)
641 jtag_command_t
**last_cmd
= jtag_get_last_command_p();
645 WARNING("JTAG command queued, while TRST is low (TAP in reset)");
646 return ERROR_JTAG_TRST_ASSERTED
;
649 /* allocate memory for a new list member */
650 *last_cmd
= cmd_queue_alloc(sizeof(jtag_command_t
));
651 last_comand_pointer
= &((*last_cmd
)->next
);
652 (*last_cmd
)->next
= NULL
;
653 (*last_cmd
)->type
= JTAG_SCAN
;
655 /* allocate memory for scan command */
656 (*last_cmd
)->cmd
.scan
= cmd_queue_alloc(sizeof(scan_command_t
));
657 (*last_cmd
)->cmd
.scan
->ir_scan
= 0;
658 (*last_cmd
)->cmd
.scan
->num_fields
= num_fields
;
659 (*last_cmd
)->cmd
.scan
->fields
= cmd_queue_alloc(num_fields
* sizeof(scan_field_t
));
660 (*last_cmd
)->cmd
.scan
->end_state
= state
;
663 (*last_cmd
)->cmd
.scan
->error_handler
= cmd_queue_alloc(sizeof(error_handler_t
));
664 *(*last_cmd
)->cmd
.scan
->error_handler
= *error_handler
;
668 (*last_cmd
)->cmd
.scan
->error_handler
= NULL
;
672 cmd_queue_end_state
= state
;
674 if (cmd_queue_cur_state
== TAP_TLR
&& cmd_queue_end_state
!= TAP_TLR
)
675 jtag_call_event_callbacks(JTAG_TRST_RELEASED
);
677 if (cmd_queue_end_state
== TAP_TLR
)
678 jtag_call_event_callbacks(JTAG_TRST_ASSERTED
);
680 cmd_queue_cur_state
= cmd_queue_end_state
;
682 for (i
= 0; i
< num_fields
; i
++)
684 int num_bits
= fields
[i
].num_bits
;
685 int num_bytes
= CEIL(fields
[i
].num_bits
, 8);
686 (*last_cmd
)->cmd
.scan
->fields
[i
].device
= fields
[i
].device
;
687 (*last_cmd
)->cmd
.scan
->fields
[i
].num_bits
= num_bits
;
688 (*last_cmd
)->cmd
.scan
->fields
[i
].out_value
= buf_cpy(fields
[i
].out_value
, cmd_queue_alloc(num_bytes
), num_bits
);
689 (*last_cmd
)->cmd
.scan
->fields
[i
].out_mask
= buf_cpy(fields
[i
].out_mask
, cmd_queue_alloc(num_bytes
), num_bits
);
690 (*last_cmd
)->cmd
.scan
->fields
[i
].in_value
= fields
[i
].in_value
;
691 (*last_cmd
)->cmd
.scan
->fields
[i
].in_check_value
= buf_cpy(fields
[i
].in_check_value
, cmd_queue_alloc(num_bytes
), num_bits
);
692 (*last_cmd
)->cmd
.scan
->fields
[i
].in_check_mask
= buf_cpy(fields
[i
].in_check_mask
, cmd_queue_alloc(num_bytes
), num_bits
);
693 (*last_cmd
)->cmd
.scan
->fields
[i
].in_handler
= fields
[i
].in_handler
;
694 (*last_cmd
)->cmd
.scan
->fields
[i
].in_handler_priv
= fields
[i
].in_handler_priv
;
699 int jtag_add_statemove(enum tap_state state
)
701 jtag_command_t
**last_cmd
= jtag_get_last_command_p();
705 WARNING("JTAG command queued, while TRST is low (TAP in reset)");
706 return ERROR_JTAG_TRST_ASSERTED
;
709 /* allocate memory for a new list member */
710 *last_cmd
= cmd_queue_alloc(sizeof(jtag_command_t
));
711 last_comand_pointer
= &((*last_cmd
)->next
);
712 (*last_cmd
)->next
= NULL
;
713 (*last_cmd
)->type
= JTAG_STATEMOVE
;
715 (*last_cmd
)->cmd
.statemove
= cmd_queue_alloc(sizeof(statemove_command_t
));
716 (*last_cmd
)->cmd
.statemove
->end_state
= state
;
719 cmd_queue_end_state
= state
;
721 if (cmd_queue_cur_state
== TAP_TLR
&& cmd_queue_end_state
!= TAP_TLR
)
722 jtag_call_event_callbacks(JTAG_TRST_RELEASED
);
724 if (cmd_queue_end_state
== TAP_TLR
)
725 jtag_call_event_callbacks(JTAG_TRST_ASSERTED
);
727 cmd_queue_cur_state
= cmd_queue_end_state
;
732 int jtag_add_pathmove(int num_states
, enum tap_state
*path
)
734 jtag_command_t
**last_cmd
= jtag_get_last_command_p();
739 WARNING("JTAG command queued, while TRST is low (TAP in reset)");
740 return ERROR_JTAG_TRST_ASSERTED
;
743 /* the last state has to be a stable state */
744 if (tap_move_map
[path
[num_states
- 1]] == -1)
746 ERROR("TAP path doesn't finish in a stable state");
747 return ERROR_JTAG_NOT_IMPLEMENTED
;
750 if (jtag
->support_pathmove
)
752 /* allocate memory for a new list member */
753 *last_cmd
= cmd_queue_alloc(sizeof(jtag_command_t
));
754 last_comand_pointer
= &((*last_cmd
)->next
);
755 (*last_cmd
)->next
= NULL
;
756 (*last_cmd
)->type
= JTAG_PATHMOVE
;
758 (*last_cmd
)->cmd
.pathmove
= cmd_queue_alloc(sizeof(pathmove_command_t
));
759 (*last_cmd
)->cmd
.pathmove
->num_states
= num_states
;
760 (*last_cmd
)->cmd
.pathmove
->path
= cmd_queue_alloc(sizeof(enum tap_state
) * num_states
);
762 for (i
= 0; i
< num_states
; i
++)
763 (*last_cmd
)->cmd
.pathmove
->path
[i
] = path
[i
];
767 /* validate the desired path, and see if it fits a default path */
772 for (i
= 0; i
< num_states
; i
++)
774 for (j
= i
; j
< num_states
; j
++)
776 if (tap_move_map
[path
[j
]] != -1)
783 if (begin
- end
<= 7) /* a default path spans no more than 7 states */
785 jtag_add_statemove(path
[end
]);
789 ERROR("encountered a TAP path that can't be fulfilled by default paths");
790 return ERROR_JTAG_NOT_IMPLEMENTED
;
797 if (cmd_queue_cur_state
== TAP_TLR
&& cmd_queue_end_state
!= TAP_TLR
)
798 jtag_call_event_callbacks(JTAG_TRST_RELEASED
);
800 if (cmd_queue_end_state
== TAP_TLR
)
801 jtag_call_event_callbacks(JTAG_TRST_ASSERTED
);
803 cmd_queue_cur_state
= path
[num_states
- 1];
808 int jtag_add_runtest(int num_cycles
, enum tap_state state
)
810 jtag_command_t
**last_cmd
= jtag_get_last_command_p();
814 WARNING("JTAG command queued, while TRST is low (TAP in reset)");
815 return ERROR_JTAG_TRST_ASSERTED
;
818 /* allocate memory for a new list member */
819 *last_cmd
= cmd_queue_alloc(sizeof(jtag_command_t
));
820 (*last_cmd
)->next
= NULL
;
821 last_comand_pointer
= &((*last_cmd
)->next
);
822 (*last_cmd
)->type
= JTAG_RUNTEST
;
824 (*last_cmd
)->cmd
.runtest
= cmd_queue_alloc(sizeof(runtest_command_t
));
825 (*last_cmd
)->cmd
.runtest
->num_cycles
= num_cycles
;
826 (*last_cmd
)->cmd
.runtest
->end_state
= state
;
829 cmd_queue_end_state
= state
;
831 if (cmd_queue_cur_state
== TAP_TLR
&& cmd_queue_end_state
!= TAP_TLR
)
832 jtag_call_event_callbacks(JTAG_TRST_RELEASED
);
834 if (cmd_queue_end_state
== TAP_TLR
)
835 jtag_call_event_callbacks(JTAG_TRST_ASSERTED
);
837 cmd_queue_cur_state
= cmd_queue_end_state
;
842 int jtag_add_reset(int req_trst
, int req_srst
)
844 int trst_with_tms
= 0;
846 jtag_command_t
**last_cmd
= jtag_get_last_command_p();
849 req_trst
= jtag_trst
;
852 req_srst
= jtag_srst
;
854 /* Make sure that jtag_reset_config allows the requested reset */
855 /* if SRST pulls TRST, we can't fulfill srst == 1 with trst == 0 */
856 if (((jtag_reset_config
& RESET_SRST_PULLS_TRST
) && (req_srst
== 1)) && (req_trst
== 0))
857 return ERROR_JTAG_RESET_WOULD_ASSERT_TRST
;
859 /* if TRST pulls SRST, we reset with TAP T-L-R */
860 if (((jtag_reset_config
& RESET_TRST_PULLS_SRST
) && (req_trst
== 1)) && (req_srst
== 0))
866 if (req_srst
&& !(jtag_reset_config
& RESET_HAS_SRST
))
868 ERROR("requested nSRST assertion, but the current configuration doesn't support this");
869 return ERROR_JTAG_RESET_CANT_SRST
;
872 if (req_trst
&& !(jtag_reset_config
& RESET_HAS_TRST
))
878 /* allocate memory for a new list member */
879 *last_cmd
= cmd_queue_alloc(sizeof(jtag_command_t
));
880 (*last_cmd
)->next
= NULL
;
881 last_comand_pointer
= &((*last_cmd
)->next
);
882 (*last_cmd
)->type
= JTAG_RESET
;
884 (*last_cmd
)->cmd
.reset
= cmd_queue_alloc(sizeof(reset_command_t
));
885 (*last_cmd
)->cmd
.reset
->trst
= req_trst
;
886 (*last_cmd
)->cmd
.reset
->srst
= req_srst
;
888 jtag_trst
= req_trst
;
889 jtag_srst
= req_srst
;
893 jtag_call_event_callbacks(JTAG_SRST_ASSERTED
);
897 jtag_call_event_callbacks(JTAG_SRST_RELEASED
);
898 if (jtag_nsrst_delay
)
899 jtag_add_sleep(jtag_nsrst_delay
* 1000);
904 last_cmd
= &((*last_cmd
)->next
);
906 /* allocate memory for a new list member */
907 *last_cmd
= cmd_queue_alloc(sizeof(jtag_command_t
));
908 (*last_cmd
)->next
= NULL
;
909 last_comand_pointer
= &((*last_cmd
)->next
);
910 (*last_cmd
)->type
= JTAG_STATEMOVE
;
912 (*last_cmd
)->cmd
.statemove
= cmd_queue_alloc(sizeof(statemove_command_t
));
913 (*last_cmd
)->cmd
.statemove
->end_state
= TAP_TLR
;
915 jtag_call_event_callbacks(JTAG_TRST_ASSERTED
);
916 cmd_queue_cur_state
= TAP_TLR
;
917 cmd_queue_end_state
= TAP_TLR
;
925 /* we just asserted nTRST, so we're now in Test-Logic-Reset,
926 * and inform possible listeners about this
928 cmd_queue_cur_state
= TAP_TLR
;
929 jtag_call_event_callbacks(JTAG_TRST_ASSERTED
);
933 /* the nTRST line got deasserted, so we're still in Test-Logic-Reset,
934 * but we might want to add a delay to give the TAP time to settle
936 if (jtag_ntrst_delay
)
937 jtag_add_sleep(jtag_ntrst_delay
* 1000);
944 int jtag_add_end_state(enum tap_state state
)
946 jtag_command_t
**last_cmd
= jtag_get_last_command_p();
948 /* allocate memory for a new list member */
949 *last_cmd
= cmd_queue_alloc(sizeof(jtag_command_t
));
950 (*last_cmd
)->next
= NULL
;
951 last_comand_pointer
= &((*last_cmd
)->next
);
952 (*last_cmd
)->type
= JTAG_END_STATE
;
954 (*last_cmd
)->cmd
.end_state
= cmd_queue_alloc(sizeof(end_state_command_t
));
955 (*last_cmd
)->cmd
.end_state
->end_state
= state
;
958 cmd_queue_end_state
= state
;
963 int jtag_add_sleep(u32 us
)
965 jtag_command_t
**last_cmd
= jtag_get_last_command_p();
967 /* allocate memory for a new list member */
968 *last_cmd
= cmd_queue_alloc(sizeof(jtag_command_t
));
969 (*last_cmd
)->next
= NULL
;
970 last_comand_pointer
= &((*last_cmd
)->next
);
971 (*last_cmd
)->type
= JTAG_SLEEP
;
973 (*last_cmd
)->cmd
.sleep
= cmd_queue_alloc(sizeof(sleep_command_t
));
974 (*last_cmd
)->cmd
.sleep
->us
= us
;
979 int jtag_scan_size(scan_command_t
*cmd
)
984 /* count bits in scan command */
985 for (i
=0; i
<cmd
->num_fields
; i
++)
987 bit_count
+= cmd
->fields
[i
].num_bits
;
993 int jtag_build_buffer(scan_command_t
*cmd
, u8
**buffer
)
998 bit_count
= jtag_scan_size(cmd
);
999 *buffer
= malloc(CEIL(bit_count
, 8));
1003 for (i
= 0; i
< cmd
->num_fields
; i
++)
1005 if (cmd
->fields
[i
].out_value
)
1007 #ifdef _DEBUG_JTAG_IO_
1008 char* char_buf
= buf_to_str(cmd
->fields
[i
].out_value
, (cmd
->fields
[i
].num_bits
> 64) ? 64 : cmd
->fields
[i
].num_bits
, 16);
1010 buf_set_buf(cmd
->fields
[i
].out_value
, 0, *buffer
, bit_count
, cmd
->fields
[i
].num_bits
);
1011 #ifdef _DEBUG_JTAG_IO_
1012 DEBUG("fields[%i].out_value: 0x%s", i
, char_buf
);
1017 bit_count
+= cmd
->fields
[i
].num_bits
;
1024 int jtag_read_buffer(u8
*buffer
, scan_command_t
*cmd
)
1030 /* we return ERROR_OK, unless a check fails, or a handler reports a problem */
1033 for (i
=0; i
< cmd
->num_fields
; i
++)
1035 /* if neither in_value, in_check_value nor in_handler
1036 * are specified we don't have to examine this field
1038 if (cmd
->fields
[i
].in_value
|| cmd
->fields
[i
].in_check_value
|| cmd
->fields
[i
].in_handler
)
1040 int num_bits
= cmd
->fields
[i
].num_bits
;
1041 u8
*captured
= buf_set_buf(buffer
, bit_count
, malloc(CEIL(num_bits
, 8)), 0, num_bits
);
1043 #ifdef _DEBUG_JTAG_IO_
1046 char_buf
= buf_to_str(captured
, (num_bits
> 64) ? 64 : num_bits
, 16);
1047 DEBUG("fields[%i].in_value: 0x%s", i
, char_buf
);
1051 if (cmd
->fields
[i
].in_value
)
1053 buf_cpy(captured
, cmd
->fields
[i
].in_value
, num_bits
);
1055 if (cmd
->fields
[i
].in_handler
)
1057 if (cmd
->fields
[i
].in_handler(cmd
->fields
[i
].in_value
, cmd
->fields
[i
].in_handler_priv
) != ERROR_OK
)
1059 WARNING("in_handler reported a failed check");
1060 retval
= ERROR_JTAG_QUEUE_FAILED
;
1065 /* no in_value specified, but a handler takes care of the scanned data */
1066 if (cmd
->fields
[i
].in_handler
&& (!cmd
->fields
[i
].in_value
))
1068 if (cmd
->fields
[i
].in_handler(captured
, cmd
->fields
[i
].in_handler_priv
) != ERROR_OK
)
1070 /* We're going to call the error:handler later, but if the in_handler
1071 * reported an error we report this failure upstream
1073 WARNING("in_handler reported a failed check");
1074 retval
= ERROR_JTAG_QUEUE_FAILED
;
1078 if (cmd
->fields
[i
].in_check_value
)
1080 int compare_failed
= 0;
1082 if (cmd
->fields
[i
].in_check_mask
)
1083 compare_failed
= buf_cmp_mask(captured
, cmd
->fields
[i
].in_check_value
, cmd
->fields
[i
].in_check_mask
, num_bits
);
1085 compare_failed
= buf_cmp(captured
, cmd
->fields
[i
].in_check_value
, num_bits
);
1089 char *captured_char
= buf_to_str(captured
, (num_bits
> 64) ? 64 : num_bits
, 16);
1090 char *in_check_value_char
= buf_to_str(cmd
->fields
[i
].in_check_value
, (num_bits
> 64) ? 64 : num_bits
, 16);
1092 if (cmd
->error_handler
)
1094 /* ask the error handler if once has been specified if this is a real problem */
1095 if (cmd
->error_handler
->error_handler(captured
, cmd
->error_handler
->error_handler_priv
) != ERROR_OK
)
1096 retval
= ERROR_JTAG_QUEUE_FAILED
;
1102 /* if there wasn't a handler specified, we report a failure */
1103 retval
= ERROR_JTAG_QUEUE_FAILED
;
1106 /* An error handler could have caught the failing check
1107 * only report a problem when there wasn't a handler, or if the handler
1108 * acknowledged the error
1112 if (cmd
->fields
[i
].in_check_mask
)
1114 char *in_check_mask_char
;
1115 in_check_mask_char
= buf_to_str(cmd
->fields
[i
].in_check_mask
, (num_bits
> 64) ? 64 : num_bits
, 16);
1116 WARNING("value captured during scan didn't pass the requested check: captured: 0x%s check_value: 0x%s check_mask: 0x%s", captured_char
, in_check_value_char
, in_check_mask_char
);
1117 free(in_check_mask_char
);
1121 WARNING("value captured during scan didn't pass the requested check: captured: 0x%s check_value: 0x%s", captured_char
, in_check_value_char
);
1125 free(captured_char
);
1126 free(in_check_value_char
);
1131 bit_count
+= cmd
->fields
[i
].num_bits
;
1137 enum scan_type
jtag_scan_type(scan_command_t
*cmd
)
1142 for (i
=0; i
< cmd
->num_fields
; i
++)
1144 if (cmd
->fields
[i
].in_check_value
|| cmd
->fields
[i
].in_value
|| cmd
->fields
[i
].in_handler
)
1146 if (cmd
->fields
[i
].out_value
)
1153 int jtag_execute_queue(void)
1157 retval
= jtag
->execute_queue();
1161 jtag_command_queue
= NULL
;
1162 last_comand_pointer
= &jtag_command_queue
;
1167 int jtag_cancel_queue(void)
1170 jtag_command_queue
= NULL
;
1171 last_comand_pointer
= &jtag_command_queue
;
1176 int jtag_reset_callback(enum jtag_event event
, void *priv
)
1178 jtag_device_t
*device
= priv
;
1182 if (event
== JTAG_TRST_ASSERTED
)
1184 buf_set_ones(device
->cur_instr
, device
->ir_length
);
1191 void jtag_sleep(u32 us
)
1196 /* Try to examine chain layout according to IEEE 1149.1 §12
1198 int jtag_examine_chain()
1200 jtag_device_t
*device
= jtag_devices
;
1202 u8 idcode_buffer
[JTAG_MAX_CHAIN_SIZE
* 4];
1205 int device_count
= 0;
1206 u8 zero_check
= 0x0;
1207 u8 one_check
= 0xff;
1210 field
.num_bits
= sizeof(idcode_buffer
) * 8;
1211 field
.out_value
= idcode_buffer
;
1212 field
.out_mask
= NULL
;
1213 field
.in_value
= idcode_buffer
;
1214 field
.in_check_value
= NULL
;
1215 field
.in_check_mask
= NULL
;
1216 field
.in_handler
= NULL
;
1217 field
.in_handler_priv
= NULL
;
1219 for (i
= 0; i
< JTAG_MAX_CHAIN_SIZE
; i
++)
1221 buf_set_u32(idcode_buffer
, i
* 32, 32, 0x000000FF);
1224 jtag_add_plain_dr_scan(1, &field
, TAP_TLR
, NULL
);
1225 jtag_execute_queue();
1227 for (i
= 0; i
< JTAG_MAX_CHAIN_SIZE
* 4; i
++)
1229 zero_check
|= idcode_buffer
[i
];
1230 one_check
&= idcode_buffer
[i
];
1233 /* if there wasn't a single non-zero bit or if all bits were one, the scan isn't valid */
1234 if ((zero_check
== 0x00) || (one_check
== 0xff))
1236 ERROR("JTAG communication failure, check connection, JTAG interface, target power etc.");
1240 for (bit_count
= 0; bit_count
< (JTAG_MAX_CHAIN_SIZE
* 32) - 31;)
1242 u32 idcode
= buf_get_u32(idcode_buffer
, bit_count
, 32);
1243 if ((idcode
& 1) == 0)
1245 /* LSB must not be 0, this indicates a device in bypass */
1256 if (idcode
== 0x000000FF)
1258 /* End of chain (invalid manufacturer ID) */
1264 device
->idcode
= idcode
;
1265 device
= device
->next
;
1269 manufacturer
= (idcode
& 0xffe) >> 1;
1270 part
= (idcode
& 0xffff000) >> 12;
1271 version
= (idcode
& 0xf0000000) >> 28;
1273 DEBUG("JTAG device found: 0x%8.8x (Manufacturer: 0x%3.3x, Part: 0x%4.4x, Version: 0x%1.1x",
1274 idcode
, manufacturer
, part
, version
);
1280 /* see if number of discovered devices matches configuration */
1281 if (device_count
!= jtag_num_devices
)
1283 ERROR("number of discovered devices in JTAG chain (%i) doesn't match configuration (%i)",
1284 device_count
, jtag_num_devices
);
1285 ERROR("check the config file and ensure proper JTAG communication (connections, speed, ...)");
1292 int jtag_validate_chain()
1294 jtag_device_t
*device
= jtag_devices
;
1295 int total_ir_length
= 0;
1302 total_ir_length
+= device
->ir_length
;
1303 device
= device
->next
;
1306 total_ir_length
+= 2;
1307 ir_test
= malloc(CEIL(total_ir_length
, 8));
1308 buf_set_ones(ir_test
, total_ir_length
);
1311 field
.num_bits
= total_ir_length
;
1312 field
.out_value
= ir_test
;
1313 field
.out_mask
= NULL
;
1314 field
.in_value
= ir_test
;
1315 field
.in_check_value
= NULL
;
1316 field
.in_check_mask
= NULL
;
1317 field
.in_handler
= NULL
;
1318 field
.in_handler_priv
= NULL
;
1320 jtag_add_plain_ir_scan(1, &field
, TAP_TLR
, NULL
);
1321 jtag_execute_queue();
1323 device
= jtag_devices
;
1326 if (buf_get_u32(ir_test
, chain_pos
, 2) != 0x1)
1328 char *cbuf
= buf_to_str(ir_test
, total_ir_length
, 16);
1329 ERROR("Error validating JTAG scan chain, IR mismatch, scan returned 0x%s", cbuf
);
1333 chain_pos
+= device
->ir_length
;
1334 device
= device
->next
;
1337 if (buf_get_u32(ir_test
, chain_pos
, 2) != 0x3)
1339 char *cbuf
= buf_to_str(ir_test
, total_ir_length
, 16);
1340 ERROR("Error validating JTAG scan chain, IR mismatch, scan returned 0x%s", cbuf
);
1350 int jtag_register_commands(struct command_context_s
*cmd_ctx
)
1352 register_command(cmd_ctx
, NULL
, "interface", handle_interface_command
,
1353 COMMAND_CONFIG
, NULL
);
1354 register_command(cmd_ctx
, NULL
, "jtag_speed", handle_jtag_speed_command
,
1355 COMMAND_ANY
, "set jtag speed (if supported) <speed>");
1356 register_command(cmd_ctx
, NULL
, "jtag_device", handle_jtag_device_command
,
1357 COMMAND_CONFIG
, NULL
);
1358 register_command(cmd_ctx
, NULL
, "reset_config", handle_reset_config_command
,
1359 COMMAND_CONFIG
, NULL
);
1360 register_command(cmd_ctx
, NULL
, "jtag_nsrst_delay", handle_jtag_nsrst_delay_command
,
1361 COMMAND_CONFIG
, NULL
);
1362 register_command(cmd_ctx
, NULL
, "jtag_ntrst_delay", handle_jtag_ntrst_delay_command
,
1363 COMMAND_CONFIG
, NULL
);
1365 register_command(cmd_ctx
, NULL
, "scan_chain", handle_scan_chain_command
,
1366 COMMAND_EXEC
, "print current scan chain configuration");
1368 register_command(cmd_ctx
, NULL
, "endstate", handle_endstate_command
,
1369 COMMAND_EXEC
, "finish JTAG operations in <tap_state>");
1370 register_command(cmd_ctx
, NULL
, "jtag_reset", handle_jtag_reset_command
,
1371 COMMAND_EXEC
, "toggle reset lines <trst> <srst>");
1372 register_command(cmd_ctx
, NULL
, "runtest", handle_runtest_command
,
1373 COMMAND_EXEC
, "move to Run-Test/Idle, and execute <num_cycles>");
1374 register_command(cmd_ctx
, NULL
, "statemove", handle_statemove_command
,
1375 COMMAND_EXEC
, "move to current endstate or [tap_state]");
1376 register_command(cmd_ctx
, NULL
, "irscan", handle_irscan_command
,
1377 COMMAND_EXEC
, "execute IR scan <device> <instr> [dev2] [instr2] ...");
1378 register_command(cmd_ctx
, NULL
, "drscan", handle_drscan_command
,
1379 COMMAND_EXEC
, "execute DR scan <device> <var> [dev2] [var2] ...");
1381 register_command(cmd_ctx
, NULL
, "verify_ircapture", handle_verify_ircapture_command
,
1382 COMMAND_ANY
, "verify value captured during Capture-IR <enable|disable>");
1386 int jtag_init(struct command_context_s
*cmd_ctx
)
1392 if (jtag_speed
== -1)
1395 if (jtag_interface
&& (jtag_interface
[0] != 0))
1396 /* configuration var 'jtag_interface' is set, and not empty */
1397 for (i
= 0; jtag_interfaces
[i
]; i
++)
1399 if (strcmp(jtag_interface
, jtag_interfaces
[i
]->name
) == 0)
1401 jtag_device_t
*device
;
1402 device
= jtag_devices
;
1404 if (jtag_interfaces
[i
]->init() != ERROR_OK
)
1405 return ERROR_JTAG_INIT_FAILED
;
1406 jtag
= jtag_interfaces
[i
];
1408 jtag_ir_scan_size
= 0;
1409 jtag_num_devices
= 0;
1410 while (device
!= NULL
)
1412 jtag_ir_scan_size
+= device
->ir_length
;
1414 device
= device
->next
;
1417 jtag_add_statemove(TAP_TLR
);
1418 jtag_execute_queue();
1420 jtag_examine_chain();
1422 jtag_validate_chain();
1428 /* no valid interface was found (i.e. the configuration option,
1429 * didn't match one of the compiled-in interfaces
1431 ERROR("No valid jtag interface found (%s)", jtag_interface
);
1432 ERROR("compiled-in jtag interfaces:");
1433 for (i
= 0; jtag_interfaces
[i
]; i
++)
1435 ERROR("%i: %s", i
, jtag_interfaces
[i
]->name
);
1439 return ERROR_JTAG_INVALID_INTERFACE
;
1442 int handle_interface_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
1446 /* only if the configuration var isn't overwritten from cmdline */
1447 if (!jtag_interface
)
1449 if (args
[0] && (args
[0][0] != 0))
1451 for (i
=0; jtag_interfaces
[i
]; i
++)
1453 if (strcmp(args
[0], jtag_interfaces
[i
]->name
) == 0)
1455 if (jtag_interfaces
[i
]->register_commands(cmd_ctx
) != ERROR_OK
)
1458 jtag_interface
= jtag_interfaces
[i
]->name
;
1465 /* remember the requested interface name, so we can complain about it later */
1466 jtag_interface
= strdup(args
[0]);
1467 DEBUG("'interface' command didn't specify a valid interface");
1473 int handle_jtag_device_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
1475 jtag_device_t
**last_device_p
= &jtag_devices
;
1479 while ((*last_device_p
)->next
)
1480 last_device_p
= &((*last_device_p
)->next
);
1481 last_device_p
= &((*last_device_p
)->next
);
1487 *last_device_p
= malloc(sizeof(jtag_device_t
));
1488 (*last_device_p
)->ir_length
= strtoul(args
[0], NULL
, 0);
1490 (*last_device_p
)->expected
= malloc((*last_device_p
)->ir_length
);
1491 buf_set_u32((*last_device_p
)->expected
, 0, (*last_device_p
)->ir_length
, strtoul(args
[1], NULL
, 0));
1492 (*last_device_p
)->expected_mask
= malloc((*last_device_p
)->ir_length
);
1493 buf_set_u32((*last_device_p
)->expected_mask
, 0, (*last_device_p
)->ir_length
, strtoul(args
[2], NULL
, 0));
1495 (*last_device_p
)->cur_instr
= malloc((*last_device_p
)->ir_length
);
1496 (*last_device_p
)->bypass
= 1;
1497 buf_set_ones((*last_device_p
)->cur_instr
, (*last_device_p
)->ir_length
);
1499 (*last_device_p
)->next
= NULL
;
1501 jtag_register_event_callback(jtag_reset_callback
, (*last_device_p
));
1508 int handle_scan_chain_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
1510 jtag_device_t
*device
= jtag_devices
;
1511 int device_count
= 0;
1515 u32 expected
, expected_mask
, cur_instr
;
1516 expected
= buf_get_u32(device
->expected
, 0, device
->ir_length
);
1517 expected_mask
= buf_get_u32(device
->expected_mask
, 0, device
->ir_length
);
1518 cur_instr
= buf_get_u32(device
->cur_instr
, 0, device
->ir_length
);
1519 command_print(cmd_ctx
, "%i: idcode: 0x%8.8x ir length %i, ir capture 0x%x, ir mask 0x%x, current instruction 0x%x", device_count
, device
->idcode
, device
->ir_length
, expected
, expected_mask
, cur_instr
);
1520 device
= device
->next
;
1527 int handle_reset_config_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
1531 if (strcmp(args
[0], "none") == 0)
1532 jtag_reset_config
= RESET_NONE
;
1533 else if (strcmp(args
[0], "trst_only") == 0)
1534 jtag_reset_config
= RESET_HAS_TRST
;
1535 else if (strcmp(args
[0], "srst_only") == 0)
1536 jtag_reset_config
= RESET_HAS_SRST
;
1537 else if (strcmp(args
[0], "trst_and_srst") == 0)
1538 jtag_reset_config
= RESET_TRST_AND_SRST
;
1541 ERROR("invalid reset_config argument");
1548 if (strcmp(args
[1], "srst_pulls_trst") == 0)
1549 jtag_reset_config
|= RESET_SRST_PULLS_TRST
;
1550 else if (strcmp(args
[1], "trst_pulls_srst") == 0)
1551 jtag_reset_config
|= RESET_TRST_PULLS_SRST
;
1552 else if (strcmp(args
[1], "combined") == 0)
1553 jtag_reset_config
|= RESET_SRST_PULLS_TRST
| RESET_TRST_PULLS_SRST
;
1554 else if (strcmp(args
[1], "separate") == 0)
1555 jtag_reset_config
&= ~(RESET_SRST_PULLS_TRST
| RESET_TRST_PULLS_SRST
);
1558 ERROR("invalid reset_config argument");
1565 if (strcmp(args
[2], "trst_open_drain") == 0)
1566 jtag_reset_config
|= RESET_TRST_OPEN_DRAIN
;
1567 else if (strcmp(args
[2], "trst_push_pull") == 0)
1568 jtag_reset_config
&= ~RESET_TRST_OPEN_DRAIN
;
1571 ERROR("invalid reset_config argument");
1578 if (strcmp(args
[3], "srst_push_pull") == 0)
1579 jtag_reset_config
|= RESET_SRST_PUSH_PULL
;
1580 else if (strcmp(args
[3], "srst_open_drain") == 0)
1581 jtag_reset_config
&= ~RESET_SRST_PUSH_PULL
;
1584 ERROR("invalid reset_config argument");
1592 int handle_jtag_nsrst_delay_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
1596 ERROR("jtag_nsrst_delay <ms> command takes one required argument");
1601 jtag_nsrst_delay
= strtoul(args
[0], NULL
, 0);
1607 int handle_jtag_ntrst_delay_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
1611 ERROR("jtag_ntrst_delay <ms> command takes one required argument");
1616 jtag_ntrst_delay
= strtoul(args
[0], NULL
, 0);
1622 int handle_jtag_speed_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
1625 command_print(cmd_ctx
, "jtag_speed: %i", jtag_speed
);
1629 /* this command can be called during CONFIG,
1630 * in which case jtag isn't initialized */
1632 jtag
->speed(strtoul(args
[0], NULL
, 0));
1634 jtag_speed
= strtoul(args
[0], NULL
, 0);
1640 int handle_endstate_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
1642 enum tap_state state
;
1646 command_print(cmd_ctx
, "usage: endstate <tap_state>");
1650 for (state
= 0; state
< 16; state
++)
1652 if (strcmp(args
[0], tap_state_strings
[state
]) == 0)
1654 jtag_add_end_state(state
);
1655 jtag_execute_queue();
1659 command_print(cmd_ctx
, "current endstate: %s", tap_state_strings
[end_state
]);
1664 int handle_jtag_reset_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
1668 char *usage
= "usage: jtag_reset <trst> <srst>";
1673 command_print(cmd_ctx
, usage
);
1677 if (args
[0][0] == '1')
1679 else if (args
[0][0] == '0')
1683 command_print(cmd_ctx
, usage
);
1687 if (args
[1][0] == '1')
1689 else if (args
[1][0] == '0')
1693 command_print(cmd_ctx
, usage
);
1697 if ((retval
= jtag_add_reset(trst
, srst
)) != ERROR_OK
)
1701 case ERROR_JTAG_RESET_WOULD_ASSERT_TRST
:
1702 command_print(cmd_ctx
, "requested reset would assert trst\nif this is acceptable, use jtag_reset 1 %c", args
[1][0]);
1704 case ERROR_JTAG_RESET_CANT_SRST
:
1705 command_print(cmd_ctx
, "can't assert srst because the current reset_config doesn't support it");
1708 command_print(cmd_ctx
, "unknown error");
1711 jtag_execute_queue();
1716 int handle_runtest_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
1720 command_print(cmd_ctx
, "usage: runtest <num_cycles>");
1724 jtag_add_runtest(strtol(args
[0], NULL
, 0), -1);
1725 jtag_execute_queue();
1731 int handle_statemove_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
1733 enum tap_state state
;
1738 for (state
= 0; state
< 16; state
++)
1740 if (strcmp(args
[0], tap_state_strings
[state
]) == 0)
1747 jtag_add_statemove(state
);
1748 jtag_execute_queue();
1754 int handle_irscan_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
1757 scan_field_t
*fields
;
1759 if ((argc
< 2) || (argc
% 2))
1761 command_print(cmd_ctx
, "usage: irscan <device> <instr> [dev2] [instr2] ...");
1765 fields
= malloc(sizeof(scan_field_t
) * argc
/ 2);
1767 for (i
= 0; i
< argc
/ 2; i
++)
1769 int device
= strtoul(args
[i
*2], NULL
, 0);
1770 int field_size
= jtag_get_device(device
)->ir_length
;
1771 fields
[i
].device
= device
;
1772 fields
[i
].out_value
= malloc(CEIL(field_size
, 8));
1773 buf_set_u32(fields
[i
].out_value
, 0, field_size
, strtoul(args
[i
*2+1], NULL
, 0));
1774 fields
[i
].out_mask
= NULL
;
1775 fields
[i
].in_value
= NULL
;
1776 fields
[i
].in_check_mask
= NULL
;
1777 fields
[i
].in_handler
= NULL
;
1778 fields
[i
].in_handler_priv
= NULL
;
1781 jtag_add_ir_scan(argc
/ 2, fields
, -1, NULL
);
1782 jtag_execute_queue();
1784 for (i
= 0; i
< argc
/ 2; i
++)
1785 free(fields
[i
].out_value
);
1792 int handle_drscan_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
1794 scan_field_t
*fields
;
1796 int field_count
= 0;
1800 if ((argc
< 2) || (argc
% 2))
1802 command_print(cmd_ctx
, "usage: drscan <device> <var> [dev2] [var2]");
1806 for (i
= 0; i
< argc
; i
+=2)
1808 var
= get_var_by_namenum(args
[i
+1]);
1811 num_fields
+= var
->num_fields
;
1815 command_print(cmd_ctx
, "variable %s doesn't exist", args
[i
+1]);
1820 fields
= malloc(sizeof(scan_field_t
) * num_fields
);
1822 for (i
= 0; i
< argc
; i
+=2)
1824 var
= get_var_by_namenum(args
[i
+1]);
1826 for (j
= 0; j
< var
->num_fields
; j
++)
1828 fields
[field_count
].device
= strtol(args
[i
], NULL
, 0);
1829 fields
[field_count
].num_bits
= var
->fields
[j
].num_bits
;
1830 fields
[field_count
].out_value
= malloc(CEIL(var
->fields
[j
].num_bits
, 8));
1831 buf_set_u32(fields
[field_count
].out_value
, 0, var
->fields
[j
].num_bits
, var
->fields
[j
].value
);
1832 fields
[field_count
].out_mask
= NULL
;
1833 fields
[field_count
].in_value
= fields
[field_count
].out_value
;
1834 fields
[field_count
].in_check_mask
= NULL
;
1835 fields
[field_count
].in_check_value
= NULL
;
1836 fields
[field_count
].in_handler
= field_le_to_host
;
1837 fields
[field_count
++].in_handler_priv
= &(var
->fields
[j
]);
1841 jtag_add_dr_scan(num_fields
, fields
, -1, NULL
);
1842 jtag_execute_queue();
1844 for (i
= 0; i
< argc
/ 2; i
++)
1845 free(fields
[i
].out_value
);
1852 int handle_verify_ircapture_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
1856 command_print(cmd_ctx
, "verify Capture-IR is %s", (jtag_verify_capture_ir
) ? "enabled": "disabled");
1860 if (strcmp(args
[0], "enable") == 0)
1862 jtag_verify_capture_ir
= 1;
1864 else if (strcmp(args
[0], "disable") == 0)
1866 jtag_verify_capture_ir
= 0;
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