1 /***************************************************************************
2 * Copyright (C) 2005 by Dominic Rath *
3 * Dominic.Rath@gmx.de *
5 * This program is free software; you can redistribute it and/or modify *
6 * it under the terms of the GNU General Public License as published by *
7 * the Free Software Foundation; either version 2 of the License, or *
8 * (at your option) any later version. *
10 * This program is distributed in the hope that it will be useful, *
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
13 * GNU General Public License for more details. *
15 * You should have received a copy of the GNU General Public License *
16 * along with this program; if not, write to the *
17 * Free Software Foundation, Inc., *
18 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
19 ***************************************************************************/
24 #include "replacements.h"
30 #include "interpreter.h"
36 char* tap_state_strings
[16] =
39 "sds", "cd", "sd", "e1d", "pd", "e2d", "ud",
41 "sis", "ci", "si", "e1i", "pi", "e2i", "ui"
44 typedef struct cmd_queue_page_s
48 struct cmd_queue_page_s
*next
;
51 #define CMD_QUEUE_PAGE_SIZE (1024 * 1024)
52 static cmd_queue_page_t
*cmd_queue_pages
= NULL
;
54 /* tap_move[i][j]: tap movement command to go from state i to state j
62 * SD->SD and SI->SI have to be caught in interface specific code
66 /* TLR RTI SD PD SI PI */
67 {0x7f, 0x00, 0x17, 0x0a, 0x1b, 0x16}, /* TLR */
68 {0x7f, 0x00, 0x25, 0x05, 0x2b, 0x0b}, /* RTI */
69 {0x7f, 0x31, 0x00, 0x01, 0x0f, 0x2f}, /* SD */
70 {0x7f, 0x30, 0x20, 0x17, 0x1e, 0x2f}, /* PD */
71 {0x7f, 0x31, 0x07, 0x17, 0x00, 0x01}, /* SI */
72 {0x7f, 0x30, 0x1c, 0x17, 0x20, 0x2f} /* PI */
75 int tap_move_map
[16] = {
76 0, -1, -1, 2, -1, 3, -1, -1,
77 1, -1, -1, 4, -1, 5, -1, -1
80 tap_transition_t tap_transitions
[16] =
82 {TAP_TLR
, TAP_RTI
}, /* TLR */
83 {TAP_SIS
, TAP_CD
}, /* SDS */
84 {TAP_E1D
, TAP_SD
}, /* CD */
85 {TAP_E1D
, TAP_SD
}, /* SD */
86 {TAP_UD
, TAP_PD
}, /* E1D */
87 {TAP_E2D
, TAP_PD
}, /* PD */
88 {TAP_UD
, TAP_SD
}, /* E2D */
89 {TAP_SDS
, TAP_RTI
}, /* UD */
90 {TAP_SDS
, TAP_RTI
}, /* RTI */
91 {TAP_TLR
, TAP_CI
}, /* SIS */
92 {TAP_E1I
, TAP_SI
}, /* CI */
93 {TAP_E1I
, TAP_SI
}, /* SI */
94 {TAP_UI
, TAP_PI
}, /* E1I */
95 {TAP_E2I
, TAP_PI
}, /* PI */
96 {TAP_UI
, TAP_SI
}, /* E2I */
97 {TAP_SDS
, TAP_RTI
} /* UI */
100 char* jtag_event_strings
[] =
108 enum tap_state end_state
= TAP_TLR
;
109 enum tap_state cur_state
= TAP_TLR
;
113 jtag_command_t
*jtag_command_queue
= NULL
;
114 jtag_command_t
**last_comand_pointer
= &jtag_command_queue
;
115 jtag_device_t
*jtag_devices
= NULL
;
116 int jtag_num_devices
= 0;
117 int jtag_ir_scan_size
= 0;
118 enum reset_types jtag_reset_config
= RESET_NONE
;
119 enum tap_state cmd_queue_end_state
= TAP_TLR
;
120 enum tap_state cmd_queue_cur_state
= TAP_TLR
;
122 int jtag_verify_capture_ir
= 1;
124 /* how long the OpenOCD should wait before attempting JTAG communication after reset lines deasserted (in ms) */
125 int jtag_nsrst_delay
= 0; /* default to no nSRST delay */
126 int jtag_ntrst_delay
= 0; /* default to no nTRST delay */
128 /* maximum number of JTAG devices expected in the chain
130 #define JTAG_MAX_CHAIN_SIZE 20
132 /* callbacks to inform high-level handlers about JTAG state changes */
133 jtag_event_callback_t
*jtag_event_callbacks
;
135 /* jtag interfaces (parport, FTDI-USB, TI-USB, ...)
137 #if BUILD_PARPORT == 1
138 extern jtag_interface_t parport_interface
;
141 #if BUILD_FT2232_FTD2XX == 1
142 extern jtag_interface_t ft2232_interface
;
145 #if BUILD_FT2232_LIBFTDI == 1
146 extern jtag_interface_t ft2232_interface
;
149 #if BUILD_AMTJTAGACCEL == 1
150 extern jtag_interface_t amt_jtagaccel_interface
;
153 #if BUILD_EP93XX == 1
154 extern jtag_interface_t ep93xx_interface
;
157 #if BUILD_AT91RM9200 == 1
158 extern jtag_interface_t at91rm9200_interface
;
161 #if BUILD_GW16012 == 1
162 extern jtag_interface_t gw16012_interface
;
165 #if BUILD_PRESTO_LIBFTDI == 1 || BUILD_PRESTO_FTD2XX == 1
166 extern jtag_interface_t presto_interface
;
169 #if BUILD_USBPROG == 1
170 extern jtag_interface_t usbprog_interface
;
173 jtag_interface_t
*jtag_interfaces
[] = {
174 #if BUILD_PARPORT == 1
177 #if BUILD_FT2232_FTD2XX == 1
180 #if BUILD_FT2232_LIBFTDI == 1
183 #if BUILD_AMTJTAGACCEL == 1
184 &amt_jtagaccel_interface
,
186 #if BUILD_EP93XX == 1
189 #if BUILD_AT91RM9200 == 1
190 &at91rm9200_interface
,
192 #if BUILD_GW16012 == 1
195 #if BUILD_PRESTO_LIBFTDI == 1 || BUILD_PRESTO_FTD2XX == 1
198 #if BUILD_USBPROG == 1
204 jtag_interface_t
*jtag
= NULL
;
207 char* jtag_interface
= NULL
;
211 /* forward declarations */
212 int jtag_add_statemove(enum tap_state endstate
);
213 int jtag_add_pathmove(int num_states
, enum tap_state
*path
);
214 int jtag_add_runtest(int num_cycles
, enum tap_state endstate
);
215 int jtag_add_reset(int trst
, int srst
);
216 int jtag_add_end_state(enum tap_state endstate
);
217 int jtag_add_sleep(u32 us
);
218 int jtag_execute_queue(void);
219 int jtag_cancel_queue(void);
222 int handle_interface_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
);
223 int handle_jtag_speed_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
);
224 int handle_jtag_device_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
);
225 int handle_reset_config_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
);
226 int handle_jtag_nsrst_delay_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
);
227 int handle_jtag_ntrst_delay_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
);
229 int handle_scan_chain_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
);
231 int handle_endstate_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
);
232 int handle_jtag_reset_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
);
233 int handle_runtest_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
);
234 int handle_statemove_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
);
235 int handle_irscan_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
);
236 int handle_drscan_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
);
238 int handle_verify_ircapture_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
);
240 int jtag_register_event_callback(int (*callback
)(enum jtag_event event
, void *priv
), void *priv
)
242 jtag_event_callback_t
**callbacks_p
= &jtag_event_callbacks
;
244 if (callback
== NULL
)
246 return ERROR_INVALID_ARGUMENTS
;
251 while ((*callbacks_p
)->next
)
252 callbacks_p
= &((*callbacks_p
)->next
);
253 callbacks_p
= &((*callbacks_p
)->next
);
256 (*callbacks_p
) = malloc(sizeof(jtag_event_callback_t
));
257 (*callbacks_p
)->callback
= callback
;
258 (*callbacks_p
)->priv
= priv
;
259 (*callbacks_p
)->next
= NULL
;
264 int jtag_unregister_event_callback(int (*callback
)(enum jtag_event event
, void *priv
))
266 jtag_event_callback_t
**callbacks_p
= &jtag_event_callbacks
;
268 if (callback
== NULL
)
270 return ERROR_INVALID_ARGUMENTS
;
275 jtag_event_callback_t
**next
= &((*callbacks_p
)->next
);
276 if ((*callbacks_p
)->callback
== callback
)
279 *callbacks_p
= *next
;
287 int jtag_call_event_callbacks(enum jtag_event event
)
289 jtag_event_callback_t
*callback
= jtag_event_callbacks
;
291 DEBUG("jtag event: %s", jtag_event_strings
[event
]);
295 callback
->callback(event
, callback
->priv
);
296 callback
= callback
->next
;
302 /* returns a pointer to the pointer of the last command in queue
303 * this may be a pointer to the root pointer (jtag_command_queue)
304 * or to the next member of the last but one command
306 jtag_command_t
** jtag_get_last_command_p(void)
308 /* jtag_command_t *cmd = jtag_command_queue;
314 return &jtag_command_queue;
318 return last_comand_pointer
;
321 /* returns a pointer to the n-th device in the scan chain */
322 jtag_device_t
* jtag_get_device(int num
)
324 jtag_device_t
*device
= jtag_devices
;
331 device
= device
->next
;
338 void* cmd_queue_alloc(size_t size
)
340 cmd_queue_page_t
**p_page
= &cmd_queue_pages
;
345 while ((*p_page
)->next
)
346 p_page
= &((*p_page
)->next
);
347 if (CMD_QUEUE_PAGE_SIZE
- (*p_page
)->used
< size
)
348 p_page
= &((*p_page
)->next
);
353 *p_page
= malloc(sizeof(cmd_queue_page_t
));
355 (*p_page
)->address
= malloc(CMD_QUEUE_PAGE_SIZE
);
356 (*p_page
)->next
= NULL
;
359 offset
= (*p_page
)->used
;
360 (*p_page
)->used
+= size
;
362 return ((*p_page
)->address
) + offset
;
365 void cmd_queue_free()
367 cmd_queue_page_t
*page
= cmd_queue_pages
;
371 cmd_queue_page_t
*last
= page
;
377 cmd_queue_pages
= NULL
;
380 int jtag_add_ir_scan(int num_fields
, scan_field_t
*fields
, enum tap_state state
, void *dummy_anachronism
)
382 jtag_command_t
**last_cmd
;
383 jtag_device_t
*device
;
389 WARNING("JTAG command queued, while TRST is low (TAP in reset)");
390 return ERROR_JTAG_TRST_ASSERTED
;
393 last_cmd
= jtag_get_last_command_p();
395 /* allocate memory for a new list member */
396 *last_cmd
= cmd_queue_alloc(sizeof(jtag_command_t
));
397 (*last_cmd
)->next
= NULL
;
398 last_comand_pointer
= &((*last_cmd
)->next
);
399 (*last_cmd
)->type
= JTAG_SCAN
;
401 /* allocate memory for ir scan command */
402 (*last_cmd
)->cmd
.scan
= cmd_queue_alloc(sizeof(scan_command_t
));
403 (*last_cmd
)->cmd
.scan
->ir_scan
= 1;
404 (*last_cmd
)->cmd
.scan
->num_fields
= jtag_num_devices
; /* one field per device */
405 (*last_cmd
)->cmd
.scan
->fields
= cmd_queue_alloc(jtag_num_devices
* sizeof(scan_field_t
));
406 (*last_cmd
)->cmd
.scan
->end_state
= state
;
409 cmd_queue_end_state
= state
;
411 if (cmd_queue_cur_state
== TAP_TLR
&& cmd_queue_end_state
!= TAP_TLR
)
412 jtag_call_event_callbacks(JTAG_TRST_RELEASED
);
414 if (cmd_queue_end_state
== TAP_TLR
)
415 jtag_call_event_callbacks(JTAG_TRST_ASSERTED
);
417 cmd_queue_cur_state
= cmd_queue_end_state
;
419 for (i
= 0; i
< jtag_num_devices
; i
++)
422 device
= jtag_get_device(i
);
423 scan_size
= device
->ir_length
;
424 (*last_cmd
)->cmd
.scan
->fields
[i
].device
= i
;
425 (*last_cmd
)->cmd
.scan
->fields
[i
].num_bits
= scan_size
;
426 (*last_cmd
)->cmd
.scan
->fields
[i
].in_value
= NULL
;
427 (*last_cmd
)->cmd
.scan
->fields
[i
].in_handler
= NULL
;
428 (*last_cmd
)->cmd
.scan
->fields
[i
].in_handler_priv
= NULL
;
429 if (jtag_verify_capture_ir
)
431 jtag_set_check_value((*last_cmd
)->cmd
.scan
->fields
+i
, device
->expected
, device
->expected_mask
, NULL
);
434 /* search the list */
435 for (j
= 0; j
< num_fields
; j
++)
437 if (i
== fields
[j
].device
)
440 (*last_cmd
)->cmd
.scan
->fields
[i
].out_value
= buf_cpy(fields
[j
].out_value
, cmd_queue_alloc(CEIL(scan_size
, 8)), scan_size
);
441 (*last_cmd
)->cmd
.scan
->fields
[i
].out_mask
= buf_cpy(fields
[j
].out_mask
, cmd_queue_alloc(CEIL(scan_size
, 8)), scan_size
);
450 /* if a device isn't listed, set it to BYPASS */
451 (*last_cmd
)->cmd
.scan
->fields
[i
].out_value
= buf_set_ones(cmd_queue_alloc(CEIL(scan_size
, 8)), scan_size
);
452 (*last_cmd
)->cmd
.scan
->fields
[i
].out_mask
= NULL
;
457 /* update device information */
458 buf_cpy((*last_cmd
)->cmd
.scan
->fields
[i
].out_value
, jtag_get_device(i
)->cur_instr
, scan_size
);
464 int jtag_add_plain_ir_scan(int num_fields
, scan_field_t
*fields
, enum tap_state state
, void *dummy_anachronism
)
466 jtag_command_t
**last_cmd
;
471 WARNING("JTAG command queued, while TRST is low (TAP in reset)");
472 return ERROR_JTAG_TRST_ASSERTED
;
475 last_cmd
= jtag_get_last_command_p();
477 /* allocate memory for a new list member */
478 *last_cmd
= cmd_queue_alloc(sizeof(jtag_command_t
));
479 (*last_cmd
)->next
= NULL
;
480 last_comand_pointer
= &((*last_cmd
)->next
);
481 (*last_cmd
)->type
= JTAG_SCAN
;
483 /* allocate memory for ir scan command */
484 (*last_cmd
)->cmd
.scan
= cmd_queue_alloc(sizeof(scan_command_t
));
485 (*last_cmd
)->cmd
.scan
->ir_scan
= 1;
486 (*last_cmd
)->cmd
.scan
->num_fields
= num_fields
;
487 (*last_cmd
)->cmd
.scan
->fields
= cmd_queue_alloc(num_fields
* sizeof(scan_field_t
));
488 (*last_cmd
)->cmd
.scan
->end_state
= state
;
491 cmd_queue_end_state
= state
;
493 if (cmd_queue_cur_state
== TAP_TLR
&& cmd_queue_end_state
!= TAP_TLR
)
494 jtag_call_event_callbacks(JTAG_TRST_RELEASED
);
496 if (cmd_queue_end_state
== TAP_TLR
)
497 jtag_call_event_callbacks(JTAG_TRST_ASSERTED
);
499 cmd_queue_cur_state
= cmd_queue_end_state
;
501 for (i
= 0; i
< num_fields
; i
++)
503 int num_bits
= fields
[i
].num_bits
;
504 int num_bytes
= CEIL(fields
[i
].num_bits
, 8);
505 (*last_cmd
)->cmd
.scan
->fields
[i
].device
= fields
[i
].device
;
506 (*last_cmd
)->cmd
.scan
->fields
[i
].num_bits
= num_bits
;
507 (*last_cmd
)->cmd
.scan
->fields
[i
].out_value
= buf_cpy(fields
[i
].out_value
, cmd_queue_alloc(num_bytes
), num_bits
);
508 (*last_cmd
)->cmd
.scan
->fields
[i
].out_mask
= buf_cpy(fields
[i
].out_mask
, cmd_queue_alloc(num_bytes
), num_bits
);
509 (*last_cmd
)->cmd
.scan
->fields
[i
].in_value
= fields
[i
].in_value
;
510 (*last_cmd
)->cmd
.scan
->fields
[i
].in_check_value
= fields
[i
].in_check_value
;
511 (*last_cmd
)->cmd
.scan
->fields
[i
].in_check_mask
= fields
[i
].in_check_mask
;
512 (*last_cmd
)->cmd
.scan
->fields
[i
].in_handler
= NULL
;
513 (*last_cmd
)->cmd
.scan
->fields
[i
].in_handler_priv
= NULL
;
518 int jtag_add_dr_scan(int num_fields
, scan_field_t
*fields
, enum tap_state state
, void *dummy_anachronism
)
521 int bypass_devices
= 0;
523 jtag_command_t
**last_cmd
= jtag_get_last_command_p();
524 jtag_device_t
*device
= jtag_devices
;
529 WARNING("JTAG command queued, while TRST is low (TAP in reset)");
530 return ERROR_JTAG_TRST_ASSERTED
;
533 /* count devices in bypass */
538 device
= device
->next
;
541 /* allocate memory for a new list member */
542 *last_cmd
= cmd_queue_alloc(sizeof(jtag_command_t
));
543 last_comand_pointer
= &((*last_cmd
)->next
);
544 (*last_cmd
)->next
= NULL
;
545 (*last_cmd
)->type
= JTAG_SCAN
;
547 /* allocate memory for dr scan command */
548 (*last_cmd
)->cmd
.scan
= cmd_queue_alloc(sizeof(scan_command_t
));
549 (*last_cmd
)->cmd
.scan
->ir_scan
= 0;
550 (*last_cmd
)->cmd
.scan
->num_fields
= num_fields
+ bypass_devices
;
551 (*last_cmd
)->cmd
.scan
->fields
= cmd_queue_alloc((num_fields
+ bypass_devices
) * sizeof(scan_field_t
));
552 (*last_cmd
)->cmd
.scan
->end_state
= state
;
555 cmd_queue_end_state
= state
;
557 if (cmd_queue_cur_state
== TAP_TLR
&& cmd_queue_end_state
!= TAP_TLR
)
558 jtag_call_event_callbacks(JTAG_TRST_RELEASED
);
560 if (cmd_queue_end_state
== TAP_TLR
)
561 jtag_call_event_callbacks(JTAG_TRST_ASSERTED
);
563 cmd_queue_cur_state
= cmd_queue_end_state
;
565 for (i
= 0; i
< jtag_num_devices
; i
++)
568 (*last_cmd
)->cmd
.scan
->fields
[field_count
].device
= i
;
570 for (j
= 0; j
< num_fields
; j
++)
572 if (i
== fields
[j
].device
)
575 scan_size
= fields
[j
].num_bits
;
576 (*last_cmd
)->cmd
.scan
->fields
[field_count
].num_bits
= scan_size
;
577 (*last_cmd
)->cmd
.scan
->fields
[field_count
].out_value
= buf_cpy(fields
[j
].out_value
, cmd_queue_alloc(CEIL(scan_size
, 8)), scan_size
);
578 (*last_cmd
)->cmd
.scan
->fields
[field_count
].out_mask
= buf_cpy(fields
[j
].out_mask
, cmd_queue_alloc(CEIL(scan_size
, 8)), scan_size
);
579 (*last_cmd
)->cmd
.scan
->fields
[field_count
].in_value
= fields
[j
].in_value
;
580 (*last_cmd
)->cmd
.scan
->fields
[field_count
].in_check_value
= fields
[j
].in_check_value
;
581 (*last_cmd
)->cmd
.scan
->fields
[field_count
].in_check_mask
= fields
[j
].in_check_mask
;
582 (*last_cmd
)->cmd
.scan
->fields
[field_count
].in_handler
= fields
[j
].in_handler
;
583 (*last_cmd
)->cmd
.scan
->fields
[field_count
++].in_handler_priv
= fields
[j
].in_handler_priv
;
588 /* if a device isn't listed, the BYPASS register should be selected */
589 if (!jtag_get_device(i
)->bypass
)
591 ERROR("BUG: no scan data for a device not in BYPASS");
595 /* program the scan field to 1 bit length, and ignore it's value */
596 (*last_cmd
)->cmd
.scan
->fields
[field_count
].num_bits
= 1;
597 (*last_cmd
)->cmd
.scan
->fields
[field_count
].out_value
= NULL
;
598 (*last_cmd
)->cmd
.scan
->fields
[field_count
].out_mask
= NULL
;
599 (*last_cmd
)->cmd
.scan
->fields
[field_count
].in_value
= NULL
;
600 (*last_cmd
)->cmd
.scan
->fields
[field_count
].in_check_value
= NULL
;
601 (*last_cmd
)->cmd
.scan
->fields
[field_count
].in_check_mask
= NULL
;
602 (*last_cmd
)->cmd
.scan
->fields
[field_count
].in_handler
= NULL
;
603 (*last_cmd
)->cmd
.scan
->fields
[field_count
++].in_handler_priv
= NULL
;
607 /* if a device is listed, the BYPASS register must not be selected */
608 if (jtag_get_device(i
)->bypass
)
610 WARNING("scan data for a device in BYPASS");
617 int jtag_add_plain_dr_scan(int num_fields
, scan_field_t
*fields
, enum tap_state state
, void *dummy_anachronism
)
620 jtag_command_t
**last_cmd
= jtag_get_last_command_p();
624 WARNING("JTAG command queued, while TRST is low (TAP in reset)");
625 return ERROR_JTAG_TRST_ASSERTED
;
628 /* allocate memory for a new list member */
629 *last_cmd
= cmd_queue_alloc(sizeof(jtag_command_t
));
630 last_comand_pointer
= &((*last_cmd
)->next
);
631 (*last_cmd
)->next
= NULL
;
632 (*last_cmd
)->type
= JTAG_SCAN
;
634 /* allocate memory for scan command */
635 (*last_cmd
)->cmd
.scan
= cmd_queue_alloc(sizeof(scan_command_t
));
636 (*last_cmd
)->cmd
.scan
->ir_scan
= 0;
637 (*last_cmd
)->cmd
.scan
->num_fields
= num_fields
;
638 (*last_cmd
)->cmd
.scan
->fields
= cmd_queue_alloc(num_fields
* sizeof(scan_field_t
));
639 (*last_cmd
)->cmd
.scan
->end_state
= state
;
642 cmd_queue_end_state
= state
;
644 if (cmd_queue_cur_state
== TAP_TLR
&& cmd_queue_end_state
!= TAP_TLR
)
645 jtag_call_event_callbacks(JTAG_TRST_RELEASED
);
647 if (cmd_queue_end_state
== TAP_TLR
)
648 jtag_call_event_callbacks(JTAG_TRST_ASSERTED
);
650 cmd_queue_cur_state
= cmd_queue_end_state
;
652 for (i
= 0; i
< num_fields
; i
++)
654 int num_bits
= fields
[i
].num_bits
;
655 int num_bytes
= CEIL(fields
[i
].num_bits
, 8);
656 (*last_cmd
)->cmd
.scan
->fields
[i
].device
= fields
[i
].device
;
657 (*last_cmd
)->cmd
.scan
->fields
[i
].num_bits
= num_bits
;
658 (*last_cmd
)->cmd
.scan
->fields
[i
].out_value
= buf_cpy(fields
[i
].out_value
, cmd_queue_alloc(num_bytes
), num_bits
);
659 (*last_cmd
)->cmd
.scan
->fields
[i
].out_mask
= buf_cpy(fields
[i
].out_mask
, cmd_queue_alloc(num_bytes
), num_bits
);
660 (*last_cmd
)->cmd
.scan
->fields
[i
].in_value
= fields
[i
].in_value
;
661 (*last_cmd
)->cmd
.scan
->fields
[i
].in_check_value
= fields
[i
].in_check_value
;
662 (*last_cmd
)->cmd
.scan
->fields
[i
].in_check_mask
= fields
[i
].in_check_mask
;
663 (*last_cmd
)->cmd
.scan
->fields
[i
].in_handler
= fields
[i
].in_handler
;
664 (*last_cmd
)->cmd
.scan
->fields
[i
].in_handler_priv
= fields
[i
].in_handler_priv
;
669 int jtag_add_statemove(enum tap_state state
)
671 jtag_command_t
**last_cmd
= jtag_get_last_command_p();
675 WARNING("JTAG command queued, while TRST is low (TAP in reset)");
676 return ERROR_JTAG_TRST_ASSERTED
;
679 /* allocate memory for a new list member */
680 *last_cmd
= cmd_queue_alloc(sizeof(jtag_command_t
));
681 last_comand_pointer
= &((*last_cmd
)->next
);
682 (*last_cmd
)->next
= NULL
;
683 (*last_cmd
)->type
= JTAG_STATEMOVE
;
685 (*last_cmd
)->cmd
.statemove
= cmd_queue_alloc(sizeof(statemove_command_t
));
686 (*last_cmd
)->cmd
.statemove
->end_state
= state
;
689 cmd_queue_end_state
= state
;
691 if (cmd_queue_cur_state
== TAP_TLR
&& cmd_queue_end_state
!= TAP_TLR
)
692 jtag_call_event_callbacks(JTAG_TRST_RELEASED
);
694 if (cmd_queue_end_state
== TAP_TLR
)
695 jtag_call_event_callbacks(JTAG_TRST_ASSERTED
);
697 cmd_queue_cur_state
= cmd_queue_end_state
;
702 int jtag_add_pathmove(int num_states
, enum tap_state
*path
)
704 jtag_command_t
**last_cmd
= jtag_get_last_command_p();
709 WARNING("JTAG command queued, while TRST is low (TAP in reset)");
710 return ERROR_JTAG_TRST_ASSERTED
;
713 /* the last state has to be a stable state */
714 if (tap_move_map
[path
[num_states
- 1]] == -1)
716 ERROR("TAP path doesn't finish in a stable state");
717 return ERROR_JTAG_NOT_IMPLEMENTED
;
720 if (jtag
->support_pathmove
)
722 /* allocate memory for a new list member */
723 *last_cmd
= cmd_queue_alloc(sizeof(jtag_command_t
));
724 last_comand_pointer
= &((*last_cmd
)->next
);
725 (*last_cmd
)->next
= NULL
;
726 (*last_cmd
)->type
= JTAG_PATHMOVE
;
728 (*last_cmd
)->cmd
.pathmove
= cmd_queue_alloc(sizeof(pathmove_command_t
));
729 (*last_cmd
)->cmd
.pathmove
->num_states
= num_states
;
730 (*last_cmd
)->cmd
.pathmove
->path
= cmd_queue_alloc(sizeof(enum tap_state
) * num_states
);
732 for (i
= 0; i
< num_states
; i
++)
733 (*last_cmd
)->cmd
.pathmove
->path
[i
] = path
[i
];
737 /* validate the desired path, and see if it fits a default path */
742 for (i
= 0; i
< num_states
; i
++)
744 for (j
= i
; j
< num_states
; j
++)
746 if (tap_move_map
[path
[j
]] != -1)
753 if (begin
- end
<= 7) /* a default path spans no more than 7 states */
755 jtag_add_statemove(path
[end
]);
759 ERROR("encountered a TAP path that can't be fulfilled by default paths");
760 return ERROR_JTAG_NOT_IMPLEMENTED
;
767 if (cmd_queue_cur_state
== TAP_TLR
&& cmd_queue_end_state
!= TAP_TLR
)
768 jtag_call_event_callbacks(JTAG_TRST_RELEASED
);
770 if (cmd_queue_end_state
== TAP_TLR
)
771 jtag_call_event_callbacks(JTAG_TRST_ASSERTED
);
773 cmd_queue_cur_state
= path
[num_states
- 1];
778 int jtag_add_runtest(int num_cycles
, enum tap_state state
)
780 jtag_command_t
**last_cmd
= jtag_get_last_command_p();
784 WARNING("JTAG command queued, while TRST is low (TAP in reset)");
785 return ERROR_JTAG_TRST_ASSERTED
;
788 /* allocate memory for a new list member */
789 *last_cmd
= cmd_queue_alloc(sizeof(jtag_command_t
));
790 (*last_cmd
)->next
= NULL
;
791 last_comand_pointer
= &((*last_cmd
)->next
);
792 (*last_cmd
)->type
= JTAG_RUNTEST
;
794 (*last_cmd
)->cmd
.runtest
= cmd_queue_alloc(sizeof(runtest_command_t
));
795 (*last_cmd
)->cmd
.runtest
->num_cycles
= num_cycles
;
796 (*last_cmd
)->cmd
.runtest
->end_state
= state
;
799 cmd_queue_end_state
= state
;
801 if (cmd_queue_cur_state
== TAP_TLR
&& cmd_queue_end_state
!= TAP_TLR
)
802 jtag_call_event_callbacks(JTAG_TRST_RELEASED
);
804 if (cmd_queue_end_state
== TAP_TLR
)
805 jtag_call_event_callbacks(JTAG_TRST_ASSERTED
);
807 cmd_queue_cur_state
= cmd_queue_end_state
;
812 int jtag_add_reset(int req_trst
, int req_srst
)
814 int trst_with_tms
= 0;
816 jtag_command_t
**last_cmd
= jtag_get_last_command_p();
819 req_trst
= jtag_trst
;
822 req_srst
= jtag_srst
;
824 /* Make sure that jtag_reset_config allows the requested reset */
825 /* if SRST pulls TRST, we can't fulfill srst == 1 with trst == 0 */
826 if (((jtag_reset_config
& RESET_SRST_PULLS_TRST
) && (req_srst
== 1)) && (req_trst
== 0))
827 return ERROR_JTAG_RESET_WOULD_ASSERT_TRST
;
829 /* if TRST pulls SRST, we reset with TAP T-L-R */
830 if (((jtag_reset_config
& RESET_TRST_PULLS_SRST
) && (req_trst
== 1)) && (req_srst
== 0))
836 if (req_srst
&& !(jtag_reset_config
& RESET_HAS_SRST
))
838 ERROR("requested nSRST assertion, but the current configuration doesn't support this");
839 return ERROR_JTAG_RESET_CANT_SRST
;
842 if (req_trst
&& !(jtag_reset_config
& RESET_HAS_TRST
))
848 /* allocate memory for a new list member */
849 *last_cmd
= cmd_queue_alloc(sizeof(jtag_command_t
));
850 (*last_cmd
)->next
= NULL
;
851 last_comand_pointer
= &((*last_cmd
)->next
);
852 (*last_cmd
)->type
= JTAG_RESET
;
854 (*last_cmd
)->cmd
.reset
= cmd_queue_alloc(sizeof(reset_command_t
));
855 (*last_cmd
)->cmd
.reset
->trst
= req_trst
;
856 (*last_cmd
)->cmd
.reset
->srst
= req_srst
;
858 jtag_trst
= req_trst
;
859 jtag_srst
= req_srst
;
863 jtag_call_event_callbacks(JTAG_SRST_ASSERTED
);
867 jtag_call_event_callbacks(JTAG_SRST_RELEASED
);
868 if (jtag_nsrst_delay
)
869 jtag_add_sleep(jtag_nsrst_delay
* 1000);
874 last_cmd
= &((*last_cmd
)->next
);
876 /* allocate memory for a new list member */
877 *last_cmd
= cmd_queue_alloc(sizeof(jtag_command_t
));
878 (*last_cmd
)->next
= NULL
;
879 last_comand_pointer
= &((*last_cmd
)->next
);
880 (*last_cmd
)->type
= JTAG_STATEMOVE
;
882 (*last_cmd
)->cmd
.statemove
= cmd_queue_alloc(sizeof(statemove_command_t
));
883 (*last_cmd
)->cmd
.statemove
->end_state
= TAP_TLR
;
885 jtag_call_event_callbacks(JTAG_TRST_ASSERTED
);
886 cmd_queue_cur_state
= TAP_TLR
;
887 cmd_queue_end_state
= TAP_TLR
;
895 /* we just asserted nTRST, so we're now in Test-Logic-Reset,
896 * and inform possible listeners about this
898 cmd_queue_cur_state
= TAP_TLR
;
899 jtag_call_event_callbacks(JTAG_TRST_ASSERTED
);
903 /* the nTRST line got deasserted, so we're still in Test-Logic-Reset,
904 * but we might want to add a delay to give the TAP time to settle
906 if (jtag_ntrst_delay
)
907 jtag_add_sleep(jtag_ntrst_delay
* 1000);
914 int jtag_add_end_state(enum tap_state state
)
916 jtag_command_t
**last_cmd
= jtag_get_last_command_p();
918 /* allocate memory for a new list member */
919 *last_cmd
= cmd_queue_alloc(sizeof(jtag_command_t
));
920 (*last_cmd
)->next
= NULL
;
921 last_comand_pointer
= &((*last_cmd
)->next
);
922 (*last_cmd
)->type
= JTAG_END_STATE
;
924 (*last_cmd
)->cmd
.end_state
= cmd_queue_alloc(sizeof(end_state_command_t
));
925 (*last_cmd
)->cmd
.end_state
->end_state
= state
;
928 cmd_queue_end_state
= state
;
933 int jtag_add_sleep(u32 us
)
935 jtag_command_t
**last_cmd
= jtag_get_last_command_p();
937 /* allocate memory for a new list member */
938 *last_cmd
= cmd_queue_alloc(sizeof(jtag_command_t
));
939 (*last_cmd
)->next
= NULL
;
940 last_comand_pointer
= &((*last_cmd
)->next
);
941 (*last_cmd
)->type
= JTAG_SLEEP
;
943 (*last_cmd
)->cmd
.sleep
= cmd_queue_alloc(sizeof(sleep_command_t
));
944 (*last_cmd
)->cmd
.sleep
->us
= us
;
949 int jtag_scan_size(scan_command_t
*cmd
)
954 /* count bits in scan command */
955 for (i
= 0; i
< cmd
->num_fields
; i
++)
957 bit_count
+= cmd
->fields
[i
].num_bits
;
963 int jtag_build_buffer(scan_command_t
*cmd
, u8
**buffer
)
968 bit_count
= jtag_scan_size(cmd
);
969 *buffer
= malloc(CEIL(bit_count
, 8));
973 for (i
= 0; i
< cmd
->num_fields
; i
++)
975 if (cmd
->fields
[i
].out_value
)
977 #ifdef _DEBUG_JTAG_IO_
978 char* char_buf
= buf_to_str(cmd
->fields
[i
].out_value
, (cmd
->fields
[i
].num_bits
> 64) ? 64 : cmd
->fields
[i
].num_bits
, 16);
980 buf_set_buf(cmd
->fields
[i
].out_value
, 0, *buffer
, bit_count
, cmd
->fields
[i
].num_bits
);
981 #ifdef _DEBUG_JTAG_IO_
982 DEBUG("fields[%i].out_value: 0x%s", i
, char_buf
);
987 bit_count
+= cmd
->fields
[i
].num_bits
;
994 extern int jtag_check_value(u8
*captured
, void *priv
);
996 int jtag_read_buffer(u8
*buffer
, scan_command_t
*cmd
)
1002 /* we return ERROR_OK, unless a check fails, or a handler reports a problem */
1005 for (i
= 0; i
< cmd
->num_fields
; i
++)
1007 /* if neither in_value nor in_handler
1008 * are specified we don't have to examine this field
1010 if (cmd
->fields
[i
].in_value
|| cmd
->fields
[i
].in_handler
)
1012 int num_bits
= cmd
->fields
[i
].num_bits
;
1013 u8
*captured
= buf_set_buf(buffer
, bit_count
, malloc(CEIL(num_bits
, 8)), 0, num_bits
);
1015 #ifdef _DEBUG_JTAG_IO_
1018 char_buf
= buf_to_str(captured
, (num_bits
> 64) ? 64 : num_bits
, 16);
1019 DEBUG("fields[%i].in_value: 0x%s", i
, char_buf
);
1023 void *priv
= cmd
->fields
[i
].in_handler_priv
;
1024 if (cmd
->fields
[i
].in_handler
== &jtag_check_value
)
1026 /* Yuk! we want to pass in the pointer to cmd->fields[i] which is not known
1027 * when jtag_check_value is invoked
1029 * Not pretty, but this is part of synthesizing check_mask via in_handler
1030 * with a minimum of code impact.
1032 * A cleaner change would be to modify the in_handler to always take field
1033 * as an argument. Perhaps later...
1035 * Change in_handler to be varargs and have fields+i as the first vararg?
1038 priv
= cmd
->fields
+ i
;
1040 if (cmd
->fields
[i
].in_value
)
1042 buf_cpy(captured
, cmd
->fields
[i
].in_value
, num_bits
);
1044 if (cmd
->fields
[i
].in_handler
)
1046 if (cmd
->fields
[i
].in_handler(cmd
->fields
[i
].in_value
, priv
) != ERROR_OK
)
1048 WARNING("in_handler reported a failed check");
1049 retval
= ERROR_JTAG_QUEUE_FAILED
;
1054 /* no in_value specified, but a handler takes care of the scanned data */
1055 if (cmd
->fields
[i
].in_handler
&& (!cmd
->fields
[i
].in_value
))
1057 if (cmd
->fields
[i
].in_handler(captured
, priv
) != ERROR_OK
)
1059 /* We're going to call the error:handler later, but if the in_handler
1060 * reported an error we report this failure upstream
1062 WARNING("in_handler reported a failed check");
1063 retval
= ERROR_JTAG_QUEUE_FAILED
;
1069 bit_count
+= cmd
->fields
[i
].num_bits
;
1075 int jtag_check_value(u8
*captured
, void *priv
)
1077 int retval
= ERROR_OK
;
1078 scan_field_t
*field
=(scan_field_t
*)priv
;
1079 int num_bits
= field
->num_bits
;
1081 int compare_failed
= 0;
1083 if (field
->in_check_mask
)
1084 compare_failed
= buf_cmp_mask(captured
, field
->in_check_value
, field
->in_check_mask
, num_bits
);
1086 compare_failed
= buf_cmp(captured
, field
->in_check_value
, num_bits
);
1090 if (field
->in_handler_error_handler
.error_handler
)
1092 /* ask the error handler if once has been specified if this is a real problem */
1093 if (field
->in_handler_error_handler
.error_handler(captured
, field
->in_handler_error_handler
.error_handler_priv
) != ERROR_OK
)
1094 retval
= ERROR_JTAG_QUEUE_FAILED
;
1100 /* if there wasn't a handler specified, we report a failure */
1101 retval
= ERROR_JTAG_QUEUE_FAILED
;
1104 /* An error handler could have caught the failing check
1105 * only report a problem when there wasn't a handler, or if the handler
1106 * acknowledged the error
1110 char *captured_char
= buf_to_str(captured
, (num_bits
> 64) ? 64 : num_bits
, 16);
1111 char *in_check_value_char
= buf_to_str(field
->in_check_value
, (num_bits
> 64) ? 64 : num_bits
, 16);
1113 if (field
->in_check_mask
)
1115 char *in_check_mask_char
;
1116 in_check_mask_char
= buf_to_str(field
->in_check_mask
, (num_bits
> 64) ? 64 : num_bits
, 16);
1117 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
);
1118 free(in_check_mask_char
);
1122 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
);
1134 set up checking of this field using the in_handler. The values passed in must be valid until
1135 after jtag_execute() has completed.
1137 void jtag_set_check_value(scan_field_t
*field
, u8
*value
, u8
*mask
, error_handler_t
*in_error_handler
)
1140 field
->in_handler
= jtag_check_value
;
1142 field
->in_handler
= NULL
; /* No check, e.g. embeddedice uses value==NULL to indicate no check */
1143 field
->in_handler_priv
= NULL
; /* this will be filled in at the invocation site to point to the field duplicate */
1144 field
->in_check_value
= value
;
1145 field
->in_check_mask
= mask
;
1146 if (in_error_handler
)
1147 field
->in_handler_error_handler
= *in_error_handler
;
1149 field
->in_handler_error_handler
.error_handler
= NULL
;
1152 enum scan_type
jtag_scan_type(scan_command_t
*cmd
)
1157 for (i
= 0; i
< cmd
->num_fields
; i
++)
1159 if (cmd
->fields
[i
].in_value
|| cmd
->fields
[i
].in_handler
)
1161 if (cmd
->fields
[i
].out_value
)
1168 int jtag_execute_queue(void)
1172 retval
= jtag
->execute_queue();
1176 jtag_command_queue
= NULL
;
1177 last_comand_pointer
= &jtag_command_queue
;
1182 int jtag_cancel_queue(void)
1185 jtag_command_queue
= NULL
;
1186 last_comand_pointer
= &jtag_command_queue
;
1191 int jtag_reset_callback(enum jtag_event event
, void *priv
)
1193 jtag_device_t
*device
= priv
;
1197 if (event
== JTAG_TRST_ASSERTED
)
1199 buf_set_ones(device
->cur_instr
, device
->ir_length
);
1206 void jtag_sleep(u32 us
)
1211 /* Try to examine chain layout according to IEEE 1149.1 §12
1213 int jtag_examine_chain()
1215 jtag_device_t
*device
= jtag_devices
;
1217 u8 idcode_buffer
[JTAG_MAX_CHAIN_SIZE
* 4];
1220 int device_count
= 0;
1221 u8 zero_check
= 0x0;
1222 u8 one_check
= 0xff;
1225 field
.num_bits
= sizeof(idcode_buffer
) * 8;
1226 field
.out_value
= idcode_buffer
;
1227 field
.out_mask
= NULL
;
1228 field
.in_value
= idcode_buffer
;
1229 field
.in_check_value
= NULL
;
1230 field
.in_check_mask
= NULL
;
1231 field
.in_handler
= NULL
;
1232 field
.in_handler_priv
= NULL
;
1234 for (i
= 0; i
< JTAG_MAX_CHAIN_SIZE
; i
++)
1236 buf_set_u32(idcode_buffer
, i
* 32, 32, 0x000000FF);
1239 jtag_add_plain_dr_scan(1, &field
, TAP_TLR
, NULL
);
1240 jtag_execute_queue();
1242 for (i
= 0; i
< JTAG_MAX_CHAIN_SIZE
* 4; i
++)
1244 zero_check
|= idcode_buffer
[i
];
1245 one_check
&= idcode_buffer
[i
];
1248 /* if there wasn't a single non-zero bit or if all bits were one, the scan isn't valid */
1249 if ((zero_check
== 0x00) || (one_check
== 0xff))
1251 ERROR("JTAG communication failure, check connection, JTAG interface, target power etc.");
1252 return ERROR_JTAG_INIT_FAILED
;
1255 for (bit_count
= 0; bit_count
< (JTAG_MAX_CHAIN_SIZE
* 32) - 31;)
1257 u32 idcode
= buf_get_u32(idcode_buffer
, bit_count
, 32);
1258 if ((idcode
& 1) == 0)
1260 /* LSB must not be 0, this indicates a device in bypass */
1271 if (idcode
== 0x000000FF)
1273 /* End of chain (invalid manufacturer ID) */
1279 device
->idcode
= idcode
;
1280 device
= device
->next
;
1284 manufacturer
= (idcode
& 0xffe) >> 1;
1285 part
= (idcode
& 0xffff000) >> 12;
1286 version
= (idcode
& 0xf0000000) >> 28;
1288 INFO("JTAG device found: 0x%8.8x (Manufacturer: 0x%3.3x, Part: 0x%4.4x, Version: 0x%1.1x)",
1289 idcode
, manufacturer
, part
, version
);
1295 /* see if number of discovered devices matches configuration */
1296 if (device_count
!= jtag_num_devices
)
1298 ERROR("number of discovered devices in JTAG chain (%i) doesn't match configuration (%i)",
1299 device_count
, jtag_num_devices
);
1300 ERROR("check the config file and ensure proper JTAG communication (connections, speed, ...)");
1301 return ERROR_JTAG_INIT_FAILED
;
1307 int jtag_validate_chain()
1309 jtag_device_t
*device
= jtag_devices
;
1310 int total_ir_length
= 0;
1317 total_ir_length
+= device
->ir_length
;
1318 device
= device
->next
;
1321 total_ir_length
+= 2;
1322 ir_test
= malloc(CEIL(total_ir_length
, 8));
1323 buf_set_ones(ir_test
, total_ir_length
);
1326 field
.num_bits
= total_ir_length
;
1327 field
.out_value
= ir_test
;
1328 field
.out_mask
= NULL
;
1329 field
.in_value
= ir_test
;
1330 field
.in_check_value
= NULL
;
1331 field
.in_check_mask
= NULL
;
1332 field
.in_handler
= NULL
;
1333 field
.in_handler_priv
= NULL
;
1335 jtag_add_plain_ir_scan(1, &field
, TAP_TLR
, NULL
);
1336 jtag_execute_queue();
1338 device
= jtag_devices
;
1341 if (buf_get_u32(ir_test
, chain_pos
, 2) != 0x1)
1343 char *cbuf
= buf_to_str(ir_test
, total_ir_length
, 16);
1344 ERROR("Error validating JTAG scan chain, IR mismatch, scan returned 0x%s", cbuf
);
1347 return ERROR_JTAG_INIT_FAILED
;
1349 chain_pos
+= device
->ir_length
;
1350 device
= device
->next
;
1353 if (buf_get_u32(ir_test
, chain_pos
, 2) != 0x3)
1355 char *cbuf
= buf_to_str(ir_test
, total_ir_length
, 16);
1356 ERROR("Error validating JTAG scan chain, IR mismatch, scan returned 0x%s", cbuf
);
1359 return ERROR_JTAG_INIT_FAILED
;
1367 int jtag_register_commands(struct command_context_s
*cmd_ctx
)
1369 register_command(cmd_ctx
, NULL
, "interface", handle_interface_command
,
1370 COMMAND_CONFIG
, NULL
);
1371 register_command(cmd_ctx
, NULL
, "jtag_speed", handle_jtag_speed_command
,
1372 COMMAND_ANY
, "set jtag speed (if supported) <speed>");
1373 register_command(cmd_ctx
, NULL
, "jtag_device", handle_jtag_device_command
,
1374 COMMAND_CONFIG
, NULL
);
1375 register_command(cmd_ctx
, NULL
, "reset_config", handle_reset_config_command
,
1376 COMMAND_CONFIG
, NULL
);
1377 register_command(cmd_ctx
, NULL
, "jtag_nsrst_delay", handle_jtag_nsrst_delay_command
,
1378 COMMAND_CONFIG
, NULL
);
1379 register_command(cmd_ctx
, NULL
, "jtag_ntrst_delay", handle_jtag_ntrst_delay_command
,
1380 COMMAND_CONFIG
, NULL
);
1382 register_command(cmd_ctx
, NULL
, "scan_chain", handle_scan_chain_command
,
1383 COMMAND_EXEC
, "print current scan chain configuration");
1385 register_command(cmd_ctx
, NULL
, "endstate", handle_endstate_command
,
1386 COMMAND_EXEC
, "finish JTAG operations in <tap_state>");
1387 register_command(cmd_ctx
, NULL
, "jtag_reset", handle_jtag_reset_command
,
1388 COMMAND_EXEC
, "toggle reset lines <trst> <srst>");
1389 register_command(cmd_ctx
, NULL
, "runtest", handle_runtest_command
,
1390 COMMAND_EXEC
, "move to Run-Test/Idle, and execute <num_cycles>");
1391 register_command(cmd_ctx
, NULL
, "statemove", handle_statemove_command
,
1392 COMMAND_EXEC
, "move to current endstate or [tap_state]");
1393 register_command(cmd_ctx
, NULL
, "irscan", handle_irscan_command
,
1394 COMMAND_EXEC
, "execute IR scan <device> <instr> [dev2] [instr2] ...");
1395 register_command(cmd_ctx
, NULL
, "drscan", handle_drscan_command
,
1396 COMMAND_EXEC
, "execute DR scan <device> <var> [dev2] [var2] ...");
1398 register_command(cmd_ctx
, NULL
, "verify_ircapture", handle_verify_ircapture_command
,
1399 COMMAND_ANY
, "verify value captured during Capture-IR <enable|disable>");
1403 int jtag_init(struct command_context_s
*cmd_ctx
)
1405 int i
, validate_tries
= 0;
1409 if (jtag_speed
== -1)
1412 if (jtag_interface
&& (jtag_interface
[0] != 0))
1413 /* configuration var 'jtag_interface' is set, and not empty */
1414 for (i
= 0; jtag_interfaces
[i
]; i
++)
1416 if (strcmp(jtag_interface
, jtag_interfaces
[i
]->name
) == 0)
1418 jtag_device_t
*device
;
1419 device
= jtag_devices
;
1421 if (jtag_interfaces
[i
]->init() != ERROR_OK
)
1422 return ERROR_JTAG_INIT_FAILED
;
1423 jtag
= jtag_interfaces
[i
];
1425 jtag_ir_scan_size
= 0;
1426 jtag_num_devices
= 0;
1427 while (device
!= NULL
)
1429 jtag_ir_scan_size
+= device
->ir_length
;
1431 device
= device
->next
;
1434 jtag_add_statemove(TAP_TLR
);
1435 jtag_execute_queue();
1437 /* examine chain first, as this could discover the real chain layout */
1438 if (jtag_examine_chain() != ERROR_OK
)
1440 ERROR("trying to validate configured JTAG chain anyway...");
1443 while (jtag_validate_chain() != ERROR_OK
)
1446 if (validate_tries
> 5)
1448 ERROR("Could not validate JTAG chain, exit");
1450 return ERROR_JTAG_INVALID_INTERFACE
;
1459 /* no valid interface was found (i.e. the configuration option,
1460 * didn't match one of the compiled-in interfaces
1462 ERROR("No valid jtag interface found (%s)", jtag_interface
);
1463 ERROR("compiled-in jtag interfaces:");
1464 for (i
= 0; jtag_interfaces
[i
]; i
++)
1466 ERROR("%i: %s", i
, jtag_interfaces
[i
]->name
);
1470 return ERROR_JTAG_INVALID_INTERFACE
;
1473 int handle_interface_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
1477 /* only if the configuration var isn't overwritten from cmdline */
1478 if (!jtag_interface
)
1480 if (args
[0] && (args
[0][0] != 0))
1482 for (i
=0; jtag_interfaces
[i
]; i
++)
1484 if (strcmp(args
[0], jtag_interfaces
[i
]->name
) == 0)
1486 if (jtag_interfaces
[i
]->register_commands(cmd_ctx
) != ERROR_OK
)
1489 jtag_interface
= jtag_interfaces
[i
]->name
;
1496 /* remember the requested interface name, so we can complain about it later */
1497 jtag_interface
= strdup(args
[0]);
1498 DEBUG("'interface' command didn't specify a valid interface");
1504 int handle_jtag_device_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
1506 jtag_device_t
**last_device_p
= &jtag_devices
;
1510 while ((*last_device_p
)->next
)
1511 last_device_p
= &((*last_device_p
)->next
);
1512 last_device_p
= &((*last_device_p
)->next
);
1518 *last_device_p
= malloc(sizeof(jtag_device_t
));
1519 (*last_device_p
)->ir_length
= strtoul(args
[0], NULL
, 0);
1521 (*last_device_p
)->expected
= malloc((*last_device_p
)->ir_length
);
1522 buf_set_u32((*last_device_p
)->expected
, 0, (*last_device_p
)->ir_length
, strtoul(args
[1], NULL
, 0));
1523 (*last_device_p
)->expected_mask
= malloc((*last_device_p
)->ir_length
);
1524 buf_set_u32((*last_device_p
)->expected_mask
, 0, (*last_device_p
)->ir_length
, strtoul(args
[2], NULL
, 0));
1526 (*last_device_p
)->cur_instr
= malloc((*last_device_p
)->ir_length
);
1527 (*last_device_p
)->bypass
= 1;
1528 buf_set_ones((*last_device_p
)->cur_instr
, (*last_device_p
)->ir_length
);
1530 (*last_device_p
)->next
= NULL
;
1532 jtag_register_event_callback(jtag_reset_callback
, (*last_device_p
));
1539 int handle_scan_chain_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
1541 jtag_device_t
*device
= jtag_devices
;
1542 int device_count
= 0;
1546 u32 expected
, expected_mask
, cur_instr
;
1547 expected
= buf_get_u32(device
->expected
, 0, device
->ir_length
);
1548 expected_mask
= buf_get_u32(device
->expected_mask
, 0, device
->ir_length
);
1549 cur_instr
= buf_get_u32(device
->cur_instr
, 0, device
->ir_length
);
1550 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
);
1551 device
= device
->next
;
1558 int handle_reset_config_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
1562 if (strcmp(args
[0], "none") == 0)
1563 jtag_reset_config
= RESET_NONE
;
1564 else if (strcmp(args
[0], "trst_only") == 0)
1565 jtag_reset_config
= RESET_HAS_TRST
;
1566 else if (strcmp(args
[0], "srst_only") == 0)
1567 jtag_reset_config
= RESET_HAS_SRST
;
1568 else if (strcmp(args
[0], "trst_and_srst") == 0)
1569 jtag_reset_config
= RESET_TRST_AND_SRST
;
1572 ERROR("invalid reset_config argument, defaulting to none");
1573 jtag_reset_config
= RESET_NONE
;
1574 return ERROR_INVALID_ARGUMENTS
;
1580 if (strcmp(args
[1], "srst_pulls_trst") == 0)
1581 jtag_reset_config
|= RESET_SRST_PULLS_TRST
;
1582 else if (strcmp(args
[1], "trst_pulls_srst") == 0)
1583 jtag_reset_config
|= RESET_TRST_PULLS_SRST
;
1584 else if (strcmp(args
[1], "combined") == 0)
1585 jtag_reset_config
|= RESET_SRST_PULLS_TRST
| RESET_TRST_PULLS_SRST
;
1586 else if (strcmp(args
[1], "separate") == 0)
1587 jtag_reset_config
&= ~(RESET_SRST_PULLS_TRST
| RESET_TRST_PULLS_SRST
);
1590 ERROR("invalid reset_config argument, defaulting to none");
1591 jtag_reset_config
= RESET_NONE
;
1592 return ERROR_INVALID_ARGUMENTS
;
1598 if (strcmp(args
[2], "trst_open_drain") == 0)
1599 jtag_reset_config
|= RESET_TRST_OPEN_DRAIN
;
1600 else if (strcmp(args
[2], "trst_push_pull") == 0)
1601 jtag_reset_config
&= ~RESET_TRST_OPEN_DRAIN
;
1604 ERROR("invalid reset_config argument, defaulting to none");
1605 jtag_reset_config
= RESET_NONE
;
1606 return ERROR_INVALID_ARGUMENTS
;
1612 if (strcmp(args
[3], "srst_push_pull") == 0)
1613 jtag_reset_config
|= RESET_SRST_PUSH_PULL
;
1614 else if (strcmp(args
[3], "srst_open_drain") == 0)
1615 jtag_reset_config
&= ~RESET_SRST_PUSH_PULL
;
1618 ERROR("invalid reset_config argument, defaulting to none");
1619 jtag_reset_config
= RESET_NONE
;
1620 return ERROR_INVALID_ARGUMENTS
;
1627 int handle_jtag_nsrst_delay_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
1631 ERROR("jtag_nsrst_delay <ms> command takes one required argument");
1636 jtag_nsrst_delay
= strtoul(args
[0], NULL
, 0);
1642 int handle_jtag_ntrst_delay_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
1646 ERROR("jtag_ntrst_delay <ms> command takes one required argument");
1651 jtag_ntrst_delay
= strtoul(args
[0], NULL
, 0);
1657 int handle_jtag_speed_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
1660 command_print(cmd_ctx
, "jtag_speed: %i", jtag_speed
);
1664 /* this command can be called during CONFIG,
1665 * in which case jtag isn't initialized */
1667 jtag
->speed(strtoul(args
[0], NULL
, 0));
1669 jtag_speed
= strtoul(args
[0], NULL
, 0);
1675 int handle_endstate_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
1677 enum tap_state state
;
1681 command_print(cmd_ctx
, "usage: endstate <tap_state>");
1685 for (state
= 0; state
< 16; state
++)
1687 if (strcmp(args
[0], tap_state_strings
[state
]) == 0)
1689 jtag_add_end_state(state
);
1690 jtag_execute_queue();
1694 command_print(cmd_ctx
, "current endstate: %s", tap_state_strings
[end_state
]);
1699 int handle_jtag_reset_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
1703 char *usage
= "usage: jtag_reset <trst> <srst>";
1708 command_print(cmd_ctx
, usage
);
1712 if (args
[0][0] == '1')
1714 else if (args
[0][0] == '0')
1718 command_print(cmd_ctx
, usage
);
1722 if (args
[1][0] == '1')
1724 else if (args
[1][0] == '0')
1728 command_print(cmd_ctx
, usage
);
1732 if ((retval
= jtag_add_reset(trst
, srst
)) != ERROR_OK
)
1736 case ERROR_JTAG_RESET_WOULD_ASSERT_TRST
:
1737 command_print(cmd_ctx
, "requested reset would assert trst\nif this is acceptable, use jtag_reset 1 %c", args
[1][0]);
1739 case ERROR_JTAG_RESET_CANT_SRST
:
1740 command_print(cmd_ctx
, "can't assert srst because the current reset_config doesn't support it");
1743 command_print(cmd_ctx
, "unknown error");
1746 jtag_execute_queue();
1751 int handle_runtest_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
1755 command_print(cmd_ctx
, "usage: runtest <num_cycles>");
1759 jtag_add_runtest(strtol(args
[0], NULL
, 0), -1);
1760 jtag_execute_queue();
1766 int handle_statemove_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
1768 enum tap_state state
;
1773 for (state
= 0; state
< 16; state
++)
1775 if (strcmp(args
[0], tap_state_strings
[state
]) == 0)
1782 jtag_add_statemove(state
);
1783 jtag_execute_queue();
1789 int handle_irscan_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
1792 scan_field_t
*fields
;
1794 if ((argc
< 2) || (argc
% 2))
1796 command_print(cmd_ctx
, "usage: irscan <device> <instr> [dev2] [instr2] ...");
1800 fields
= malloc(sizeof(scan_field_t
) * argc
/ 2);
1802 for (i
= 0; i
< argc
/ 2; i
++)
1804 int device
= strtoul(args
[i
*2], NULL
, 0);
1805 int field_size
= jtag_get_device(device
)->ir_length
;
1806 fields
[i
].device
= device
;
1807 fields
[i
].out_value
= malloc(CEIL(field_size
, 8));
1808 buf_set_u32(fields
[i
].out_value
, 0, field_size
, strtoul(args
[i
*2+1], NULL
, 0));
1809 fields
[i
].out_mask
= NULL
;
1810 fields
[i
].in_value
= NULL
;
1811 fields
[i
].in_check_mask
= NULL
;
1812 fields
[i
].in_handler
= NULL
;
1813 fields
[i
].in_handler_priv
= NULL
;
1816 jtag_add_ir_scan(argc
/ 2, fields
, -1, NULL
);
1817 jtag_execute_queue();
1819 for (i
= 0; i
< argc
/ 2; i
++)
1820 free(fields
[i
].out_value
);
1827 int handle_drscan_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
1829 scan_field_t
*fields
;
1831 int field_count
= 0;
1835 if ((argc
< 2) || (argc
% 2))
1837 command_print(cmd_ctx
, "usage: drscan <device> <var> [dev2] [var2]");
1841 for (i
= 0; i
< argc
; i
+=2)
1843 var
= get_var_by_namenum(args
[i
+1]);
1846 num_fields
+= var
->num_fields
;
1850 command_print(cmd_ctx
, "variable %s doesn't exist", args
[i
+1]);
1855 fields
= malloc(sizeof(scan_field_t
) * num_fields
);
1857 for (i
= 0; i
< argc
; i
+=2)
1859 var
= get_var_by_namenum(args
[i
+1]);
1861 for (j
= 0; j
< var
->num_fields
; j
++)
1863 fields
[field_count
].device
= strtol(args
[i
], NULL
, 0);
1864 fields
[field_count
].num_bits
= var
->fields
[j
].num_bits
;
1865 fields
[field_count
].out_value
= malloc(CEIL(var
->fields
[j
].num_bits
, 8));
1866 buf_set_u32(fields
[field_count
].out_value
, 0, var
->fields
[j
].num_bits
, var
->fields
[j
].value
);
1867 fields
[field_count
].out_mask
= NULL
;
1868 fields
[field_count
].in_value
= fields
[field_count
].out_value
;
1869 fields
[field_count
].in_check_mask
= NULL
;
1870 fields
[field_count
].in_check_value
= NULL
;
1871 fields
[field_count
].in_handler
= field_le_to_host
;
1872 fields
[field_count
++].in_handler_priv
= &(var
->fields
[j
]);
1876 jtag_add_dr_scan(num_fields
, fields
, -1, NULL
);
1877 jtag_execute_queue();
1879 for (i
= 0; i
< argc
/ 2; i
++)
1880 free(fields
[i
].out_value
);
1887 int handle_verify_ircapture_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
1891 command_print(cmd_ctx
, "verify Capture-IR is %s", (jtag_verify_capture_ir
) ? "enabled": "disabled");
1895 if (strcmp(args
[0], "enable") == 0)
1897 jtag_verify_capture_ir
= 1;
1899 else if (strcmp(args
[0], "disable") == 0)
1901 jtag_verify_capture_ir
= 0;
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