1 /***************************************************************************
2 * Copyright (C) 2005 by Dominic Rath *
3 * Dominic.Rath@gmx.de *
5 * This program is free software; you can redistribute it and/or modify *
6 * it under the terms of the GNU General Public License as published by *
7 * the Free Software Foundation; either version 2 of the License, or *
8 * (at your option) any later version. *
10 * This program is distributed in the hope that it will be useful, *
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
13 * GNU General Public License for more details. *
15 * You should have received a copy of the GNU General Public License *
16 * along with this program; if not, write to the *
17 * Free Software Foundation, Inc., *
18 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
19 ***************************************************************************/
24 #include "replacements.h"
30 #include "interpreter.h"
36 char* tap_state_strings
[16] =
39 "sds", "cd", "sd", "e1d", "pd", "e2d", "ud",
41 "sis", "ci", "si", "e1i", "pi", "e2i", "ui"
44 typedef struct cmd_queue_page_s
48 struct cmd_queue_page_s
*next
;
51 #define CMD_QUEUE_PAGE_SIZE (1024 * 1024)
52 static cmd_queue_page_t
*cmd_queue_pages
= NULL
;
54 /* tap_move[i][j]: tap movement command to go from state i to state j
62 * SD->SD and SI->SI have to be caught in interface specific code
66 /* TLR RTI SD PD SI PI */
67 {0x7f, 0x00, 0x17, 0x0a, 0x1b, 0x16}, /* TLR */
68 {0x7f, 0x00, 0x25, 0x05, 0x2b, 0x0b}, /* RTI */
69 {0x7f, 0x31, 0x00, 0x01, 0x0f, 0x2f}, /* SD */
70 {0x7f, 0x30, 0x20, 0x17, 0x1e, 0x2f}, /* PD */
71 {0x7f, 0x31, 0x07, 0x17, 0x00, 0x01}, /* SI */
72 {0x7f, 0x30, 0x1c, 0x17, 0x20, 0x2f} /* PI */
75 int tap_move_map
[16] = {
76 0, -1, -1, 2, -1, 3, -1, -1,
77 1, -1, -1, 4, -1, 5, -1, -1
80 tap_transition_t tap_transitions
[16] =
82 {TAP_TLR
, TAP_RTI
}, /* TLR */
83 {TAP_SIS
, TAP_CD
}, /* SDS */
84 {TAP_E1D
, TAP_SD
}, /* CD */
85 {TAP_E1D
, TAP_SD
}, /* SD */
86 {TAP_UD
, TAP_PD
}, /* E1D */
87 {TAP_E2D
, TAP_PD
}, /* PD */
88 {TAP_UD
, TAP_SD
}, /* E2D */
89 {TAP_SDS
, TAP_RTI
}, /* UD */
90 {TAP_SDS
, TAP_RTI
}, /* RTI */
91 {TAP_TLR
, TAP_CI
}, /* SIS */
92 {TAP_E1I
, TAP_SI
}, /* CI */
93 {TAP_E1I
, TAP_SI
}, /* SI */
94 {TAP_UI
, TAP_PI
}, /* E1I */
95 {TAP_E2I
, TAP_PI
}, /* PI */
96 {TAP_UI
, TAP_SI
}, /* E2I */
97 {TAP_SDS
, TAP_RTI
} /* UI */
100 char* jtag_event_strings
[] =
108 enum tap_state end_state
= TAP_TLR
;
109 enum tap_state cur_state
= TAP_TLR
;
113 jtag_command_t
*jtag_command_queue
= NULL
;
114 jtag_command_t
**last_comand_pointer
= &jtag_command_queue
;
115 jtag_device_t
*jtag_devices
= NULL
;
116 int jtag_num_devices
= 0;
117 int jtag_ir_scan_size
= 0;
118 enum reset_types jtag_reset_config
= RESET_NONE
;
119 enum tap_state cmd_queue_end_state
= TAP_TLR
;
120 enum tap_state cmd_queue_cur_state
= TAP_TLR
;
122 int jtag_verify_capture_ir
= 1;
124 /* how long the OpenOCD should wait before attempting JTAG communication after reset lines deasserted (in ms) */
125 int jtag_nsrst_delay
= 0; /* default to no nSRST delay */
126 int jtag_ntrst_delay
= 0; /* default to no nTRST delay */
128 /* maximum number of JTAG devices expected in the chain
130 #define JTAG_MAX_CHAIN_SIZE 20
132 /* callbacks to inform high-level handlers about JTAG state changes */
133 jtag_event_callback_t
*jtag_event_callbacks
;
135 /* jtag interfaces (parport, FTDI-USB, TI-USB, ...)
137 #if BUILD_PARPORT == 1
138 extern jtag_interface_t parport_interface
;
141 #if BUILD_FT2232_FTD2XX == 1
142 extern jtag_interface_t ft2232_interface
;
145 #if BUILD_FT2232_LIBFTDI == 1
146 extern jtag_interface_t ft2232_interface
;
149 #if BUILD_AMTJTAGACCEL == 1
150 extern jtag_interface_t amt_jtagaccel_interface
;
153 #if BUILD_EP93XX == 1
154 extern jtag_interface_t ep93xx_interface
;
157 #if BUILD_AT91RM9200 == 1
158 extern jtag_interface_t at91rm9200_interface
;
161 #if BUILD_GW16012 == 1
162 extern jtag_interface_t gw16012_interface
;
165 #if BUILD_PRESTO_LIBFTDI == 1 || BUILD_PRESTO_FTD2XX == 1
166 extern jtag_interface_t presto_interface
;
169 #if BUILD_USBPROG == 1
170 extern jtag_interface_t usbprog_interface
;
173 jtag_interface_t
*jtag_interfaces
[] = {
174 #if BUILD_PARPORT == 1
177 #if BUILD_FT2232_FTD2XX == 1
180 #if BUILD_FT2232_LIBFTDI == 1
183 #if BUILD_AMTJTAGACCEL == 1
184 &amt_jtagaccel_interface
,
186 #if BUILD_EP93XX == 1
189 #if BUILD_AT91RM9200 == 1
190 &at91rm9200_interface
,
192 #if BUILD_GW16012 == 1
195 #if BUILD_PRESTO_LIBFTDI == 1 || BUILD_PRESTO_FTD2XX == 1
198 #if BUILD_USBPROG == 1
204 jtag_interface_t
*jtag
= NULL
;
207 char* jtag_interface
= NULL
;
211 /* forward declarations */
212 int jtag_add_ir_scan(int num_fields
, scan_field_t
*fields
, enum tap_state endstate
, error_handler_t
*error_handler
);
213 int jtag_add_dr_scan(int num_fields
, scan_field_t
*fields
, enum tap_state endstate
, error_handler_t
*error_handler
);
214 int jtag_add_plain_ir_scan(int num_fields
, scan_field_t
*fields
, enum tap_state endstate
, error_handler_t
*error_handler
);
215 int jtag_add_plain_dr_scan(int num_fields
, scan_field_t
*fields
, enum tap_state endstate
, error_handler_t
*error_handler
);
216 int jtag_add_statemove(enum tap_state endstate
);
217 int jtag_add_pathmove(int num_states
, enum tap_state
*path
);
218 int jtag_add_runtest(int num_cycles
, enum tap_state endstate
);
219 int jtag_add_reset(int trst
, int srst
);
220 int jtag_add_end_state(enum tap_state endstate
);
221 int jtag_add_sleep(u32 us
);
222 int jtag_execute_queue(void);
223 int jtag_cancel_queue(void);
226 int handle_interface_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
);
227 int handle_jtag_speed_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
);
228 int handle_jtag_device_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
);
229 int handle_reset_config_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
);
230 int handle_jtag_nsrst_delay_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
);
231 int handle_jtag_ntrst_delay_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
);
233 int handle_scan_chain_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
);
235 int handle_endstate_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
);
236 int handle_jtag_reset_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
);
237 int handle_runtest_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
);
238 int handle_statemove_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
);
239 int handle_irscan_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
);
240 int handle_drscan_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
);
242 int handle_verify_ircapture_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
);
244 int jtag_register_event_callback(int (*callback
)(enum jtag_event event
, void *priv
), void *priv
)
246 jtag_event_callback_t
**callbacks_p
= &jtag_event_callbacks
;
248 if (callback
== NULL
)
250 return ERROR_INVALID_ARGUMENTS
;
255 while ((*callbacks_p
)->next
)
256 callbacks_p
= &((*callbacks_p
)->next
);
257 callbacks_p
= &((*callbacks_p
)->next
);
260 (*callbacks_p
) = malloc(sizeof(jtag_event_callback_t
));
261 (*callbacks_p
)->callback
= callback
;
262 (*callbacks_p
)->priv
= priv
;
263 (*callbacks_p
)->next
= NULL
;
268 int jtag_unregister_event_callback(int (*callback
)(enum jtag_event event
, void *priv
))
270 jtag_event_callback_t
**callbacks_p
= &jtag_event_callbacks
;
272 if (callback
== NULL
)
274 return ERROR_INVALID_ARGUMENTS
;
279 jtag_event_callback_t
**next
= &((*callbacks_p
)->next
);
280 if ((*callbacks_p
)->callback
== callback
)
283 *callbacks_p
= *next
;
291 int jtag_call_event_callbacks(enum jtag_event event
)
293 jtag_event_callback_t
*callback
= jtag_event_callbacks
;
295 DEBUG("jtag event: %s", jtag_event_strings
[event
]);
299 callback
->callback(event
, callback
->priv
);
300 callback
= callback
->next
;
306 /* returns a pointer to the pointer of the last command in queue
307 * this may be a pointer to the root pointer (jtag_command_queue)
308 * or to the next member of the last but one command
310 jtag_command_t
** jtag_get_last_command_p(void)
312 /* jtag_command_t *cmd = jtag_command_queue;
318 return &jtag_command_queue;
322 return last_comand_pointer
;
325 /* returns a pointer to the n-th device in the scan chain */
326 jtag_device_t
* jtag_get_device(int num
)
328 jtag_device_t
*device
= jtag_devices
;
335 device
= device
->next
;
342 void* cmd_queue_alloc(size_t size
)
344 cmd_queue_page_t
**p_page
= &cmd_queue_pages
;
349 while ((*p_page
)->next
)
350 p_page
= &((*p_page
)->next
);
351 if (CMD_QUEUE_PAGE_SIZE
- (*p_page
)->used
< size
)
352 p_page
= &((*p_page
)->next
);
357 *p_page
= malloc(sizeof(cmd_queue_page_t
));
359 (*p_page
)->address
= malloc(CMD_QUEUE_PAGE_SIZE
);
360 (*p_page
)->next
= NULL
;
363 offset
= (*p_page
)->used
;
364 (*p_page
)->used
+= size
;
366 return ((*p_page
)->address
) + offset
;
369 void cmd_queue_free()
371 cmd_queue_page_t
*page
= cmd_queue_pages
;
375 cmd_queue_page_t
*last
= page
;
381 cmd_queue_pages
= NULL
;
384 int jtag_add_ir_scan(int num_fields
, scan_field_t
*fields
, enum tap_state state
, error_handler_t
*error_handler
)
386 jtag_command_t
**last_cmd
;
387 jtag_device_t
*device
;
393 WARNING("JTAG command queued, while TRST is low (TAP in reset)");
394 return ERROR_JTAG_TRST_ASSERTED
;
397 last_cmd
= jtag_get_last_command_p();
399 /* allocate memory for a new list member */
400 *last_cmd
= cmd_queue_alloc(sizeof(jtag_command_t
));
401 (*last_cmd
)->next
= NULL
;
402 last_comand_pointer
= &((*last_cmd
)->next
);
403 (*last_cmd
)->type
= JTAG_SCAN
;
405 /* allocate memory for ir scan command */
406 (*last_cmd
)->cmd
.scan
= cmd_queue_alloc(sizeof(scan_command_t
));
407 (*last_cmd
)->cmd
.scan
->ir_scan
= 1;
408 (*last_cmd
)->cmd
.scan
->num_fields
= jtag_num_devices
; /* one field per device */
409 (*last_cmd
)->cmd
.scan
->fields
= cmd_queue_alloc(jtag_num_devices
* sizeof(scan_field_t
));
410 (*last_cmd
)->cmd
.scan
->end_state
= state
;
413 (*last_cmd
)->cmd
.scan
->error_handler
= cmd_queue_alloc(sizeof(error_handler_t
));
414 *(*last_cmd
)->cmd
.scan
->error_handler
= *error_handler
;
418 (*last_cmd
)->cmd
.scan
->error_handler
= NULL
;
422 cmd_queue_end_state
= state
;
424 if (cmd_queue_cur_state
== TAP_TLR
&& cmd_queue_end_state
!= TAP_TLR
)
425 jtag_call_event_callbacks(JTAG_TRST_RELEASED
);
427 if (cmd_queue_end_state
== TAP_TLR
)
428 jtag_call_event_callbacks(JTAG_TRST_ASSERTED
);
430 cmd_queue_cur_state
= cmd_queue_end_state
;
432 for (i
=0; i
< jtag_num_devices
; i
++)
435 device
= jtag_get_device(i
);
436 scan_size
= device
->ir_length
;
437 (*last_cmd
)->cmd
.scan
->fields
[i
].device
= i
;
438 (*last_cmd
)->cmd
.scan
->fields
[i
].num_bits
= scan_size
;
439 (*last_cmd
)->cmd
.scan
->fields
[i
].in_value
= NULL
;
440 if (jtag_verify_capture_ir
)
442 (*last_cmd
)->cmd
.scan
->fields
[i
].in_check_value
= buf_cpy(device
->expected
, cmd_queue_alloc(CEIL(scan_size
, 8)), scan_size
);
443 (*last_cmd
)->cmd
.scan
->fields
[i
].in_check_mask
= buf_cpy(device
->expected_mask
, cmd_queue_alloc(CEIL(scan_size
, 8)), scan_size
);
447 (*last_cmd
)->cmd
.scan
->fields
[i
].in_check_value
= NULL
;
448 (*last_cmd
)->cmd
.scan
->fields
[i
].in_check_mask
= NULL
;
450 (*last_cmd
)->cmd
.scan
->fields
[i
].in_handler
= NULL
;
451 (*last_cmd
)->cmd
.scan
->fields
[i
].in_handler_priv
= NULL
;
453 /* search the list */
454 for (j
=0; j
< num_fields
; j
++)
456 if (i
== fields
[j
].device
)
459 (*last_cmd
)->cmd
.scan
->fields
[i
].out_value
= buf_cpy(fields
[j
].out_value
, cmd_queue_alloc(CEIL(scan_size
, 8)), scan_size
);
460 (*last_cmd
)->cmd
.scan
->fields
[i
].out_mask
= buf_cpy(fields
[j
].out_mask
, cmd_queue_alloc(CEIL(scan_size
, 8)), scan_size
);
469 /* if a device isn't listed, set it to BYPASS */
470 (*last_cmd
)->cmd
.scan
->fields
[i
].out_value
= buf_set_ones(cmd_queue_alloc(CEIL(scan_size
, 8)), scan_size
);
471 (*last_cmd
)->cmd
.scan
->fields
[i
].out_mask
= NULL
;
476 /* update device information */
477 buf_cpy((*last_cmd
)->cmd
.scan
->fields
[i
].out_value
, jtag_get_device(i
)->cur_instr
, scan_size
);
483 int jtag_add_plain_ir_scan(int num_fields
, scan_field_t
*fields
, enum tap_state state
, error_handler_t
*error_handler
)
485 jtag_command_t
**last_cmd
;
490 WARNING("JTAG command queued, while TRST is low (TAP in reset)");
491 return ERROR_JTAG_TRST_ASSERTED
;
494 last_cmd
= jtag_get_last_command_p();
496 /* allocate memory for a new list member */
497 *last_cmd
= cmd_queue_alloc(sizeof(jtag_command_t
));
498 (*last_cmd
)->next
= NULL
;
499 last_comand_pointer
= &((*last_cmd
)->next
);
500 (*last_cmd
)->type
= JTAG_SCAN
;
502 /* allocate memory for ir scan command */
503 (*last_cmd
)->cmd
.scan
= cmd_queue_alloc(sizeof(scan_command_t
));
504 (*last_cmd
)->cmd
.scan
->ir_scan
= 1;
505 (*last_cmd
)->cmd
.scan
->num_fields
= num_fields
;
506 (*last_cmd
)->cmd
.scan
->fields
= cmd_queue_alloc(num_fields
* sizeof(scan_field_t
));
507 (*last_cmd
)->cmd
.scan
->end_state
= state
;
510 (*last_cmd
)->cmd
.scan
->error_handler
= cmd_queue_alloc(sizeof(error_handler_t
));
511 *(*last_cmd
)->cmd
.scan
->error_handler
= *error_handler
;
515 (*last_cmd
)->cmd
.scan
->error_handler
= NULL
;
519 cmd_queue_end_state
= state
;
521 if (cmd_queue_cur_state
== TAP_TLR
&& cmd_queue_end_state
!= TAP_TLR
)
522 jtag_call_event_callbacks(JTAG_TRST_RELEASED
);
524 if (cmd_queue_end_state
== TAP_TLR
)
525 jtag_call_event_callbacks(JTAG_TRST_ASSERTED
);
527 cmd_queue_cur_state
= cmd_queue_end_state
;
529 for (i
= 0; i
< num_fields
; i
++)
531 int num_bits
= fields
[i
].num_bits
;
532 int num_bytes
= CEIL(fields
[i
].num_bits
, 8);
533 (*last_cmd
)->cmd
.scan
->fields
[i
].device
= fields
[i
].device
;
534 (*last_cmd
)->cmd
.scan
->fields
[i
].num_bits
= num_bits
;
535 (*last_cmd
)->cmd
.scan
->fields
[i
].out_value
= buf_cpy(fields
[i
].out_value
, cmd_queue_alloc(num_bytes
), num_bits
);
536 (*last_cmd
)->cmd
.scan
->fields
[i
].out_mask
= buf_cpy(fields
[i
].out_mask
, cmd_queue_alloc(num_bytes
), num_bits
);
537 (*last_cmd
)->cmd
.scan
->fields
[i
].in_value
= fields
[i
].in_value
;
538 (*last_cmd
)->cmd
.scan
->fields
[i
].in_check_value
= buf_cpy(fields
[i
].in_check_value
, cmd_queue_alloc(num_bytes
), num_bits
);
539 (*last_cmd
)->cmd
.scan
->fields
[i
].in_check_mask
= buf_cpy(fields
[i
].in_check_mask
, cmd_queue_alloc(num_bytes
), num_bits
);
540 (*last_cmd
)->cmd
.scan
->fields
[i
].in_handler
= NULL
;
541 (*last_cmd
)->cmd
.scan
->fields
[i
].in_handler_priv
= NULL
;
546 int jtag_add_dr_scan(int num_fields
, scan_field_t
*fields
, enum tap_state state
, error_handler_t
*error_handler
)
549 int bypass_devices
= 0;
551 jtag_command_t
**last_cmd
= jtag_get_last_command_p();
552 jtag_device_t
*device
= jtag_devices
;
557 WARNING("JTAG command queued, while TRST is low (TAP in reset)");
558 return ERROR_JTAG_TRST_ASSERTED
;
561 /* count devices in bypass */
566 device
= device
->next
;
569 /* allocate memory for a new list member */
570 *last_cmd
= cmd_queue_alloc(sizeof(jtag_command_t
));
571 last_comand_pointer
= &((*last_cmd
)->next
);
572 (*last_cmd
)->next
= NULL
;
573 (*last_cmd
)->type
= JTAG_SCAN
;
575 /* allocate memory for dr scan command */
576 (*last_cmd
)->cmd
.scan
= cmd_queue_alloc(sizeof(scan_command_t
));
577 (*last_cmd
)->cmd
.scan
->ir_scan
= 0;
578 (*last_cmd
)->cmd
.scan
->num_fields
= num_fields
+ bypass_devices
;
579 (*last_cmd
)->cmd
.scan
->fields
= cmd_queue_alloc((num_fields
+ bypass_devices
) * sizeof(scan_field_t
));
580 (*last_cmd
)->cmd
.scan
->end_state
= state
;
583 (*last_cmd
)->cmd
.scan
->error_handler
= cmd_queue_alloc(sizeof(error_handler_t
));
584 *(*last_cmd
)->cmd
.scan
->error_handler
= *error_handler
;
588 (*last_cmd
)->cmd
.scan
->error_handler
= NULL
;
592 cmd_queue_end_state
= state
;
594 if (cmd_queue_cur_state
== TAP_TLR
&& cmd_queue_end_state
!= TAP_TLR
)
595 jtag_call_event_callbacks(JTAG_TRST_RELEASED
);
597 if (cmd_queue_end_state
== TAP_TLR
)
598 jtag_call_event_callbacks(JTAG_TRST_ASSERTED
);
600 cmd_queue_cur_state
= cmd_queue_end_state
;
602 for (i
=0; i
< jtag_num_devices
; i
++)
605 (*last_cmd
)->cmd
.scan
->fields
[field_count
].device
= i
;
607 for (j
=0; j
< num_fields
; j
++)
609 if (i
== fields
[j
].device
)
612 scan_size
= fields
[j
].num_bits
;
613 (*last_cmd
)->cmd
.scan
->fields
[field_count
].num_bits
= scan_size
;
614 (*last_cmd
)->cmd
.scan
->fields
[field_count
].out_value
= buf_cpy(fields
[j
].out_value
, cmd_queue_alloc(CEIL(scan_size
, 8)), scan_size
);
615 (*last_cmd
)->cmd
.scan
->fields
[field_count
].out_mask
= buf_cpy(fields
[j
].out_mask
, cmd_queue_alloc(CEIL(scan_size
, 8)), scan_size
);
616 (*last_cmd
)->cmd
.scan
->fields
[field_count
].in_value
= fields
[j
].in_value
;
617 (*last_cmd
)->cmd
.scan
->fields
[field_count
].in_check_value
= buf_cpy(fields
[j
].in_check_value
, cmd_queue_alloc(CEIL(scan_size
, 8)), scan_size
);
618 (*last_cmd
)->cmd
.scan
->fields
[field_count
].in_check_mask
= buf_cpy(fields
[j
].in_check_mask
, cmd_queue_alloc(CEIL(scan_size
, 8)), scan_size
);
619 (*last_cmd
)->cmd
.scan
->fields
[field_count
].in_handler
= fields
[j
].in_handler
;
620 (*last_cmd
)->cmd
.scan
->fields
[field_count
++].in_handler_priv
= fields
[j
].in_handler_priv
;
625 /* if a device isn't listed, the BYPASS register should be selected */
626 if (!jtag_get_device(i
)->bypass
)
628 ERROR("BUG: no scan data for a device not in BYPASS");
632 /* program the scan field to 1 bit length, and ignore it's value */
633 (*last_cmd
)->cmd
.scan
->fields
[field_count
].num_bits
= 1;
634 (*last_cmd
)->cmd
.scan
->fields
[field_count
].out_value
= NULL
;
635 (*last_cmd
)->cmd
.scan
->fields
[field_count
].out_mask
= NULL
;
636 (*last_cmd
)->cmd
.scan
->fields
[field_count
].in_value
= NULL
;
637 (*last_cmd
)->cmd
.scan
->fields
[field_count
].in_check_value
= NULL
;
638 (*last_cmd
)->cmd
.scan
->fields
[field_count
].in_check_mask
= NULL
;
639 (*last_cmd
)->cmd
.scan
->fields
[field_count
].in_handler
= NULL
;
640 (*last_cmd
)->cmd
.scan
->fields
[field_count
++].in_handler_priv
= NULL
;
644 /* if a device is listed, the BYPASS register must not be selected */
645 if (jtag_get_device(i
)->bypass
)
647 WARNING("scan data for a device in BYPASS");
654 int jtag_add_plain_dr_scan(int num_fields
, scan_field_t
*fields
, enum tap_state state
, error_handler_t
*error_handler
)
657 jtag_command_t
**last_cmd
= jtag_get_last_command_p();
661 WARNING("JTAG command queued, while TRST is low (TAP in reset)");
662 return ERROR_JTAG_TRST_ASSERTED
;
665 /* allocate memory for a new list member */
666 *last_cmd
= cmd_queue_alloc(sizeof(jtag_command_t
));
667 last_comand_pointer
= &((*last_cmd
)->next
);
668 (*last_cmd
)->next
= NULL
;
669 (*last_cmd
)->type
= JTAG_SCAN
;
671 /* allocate memory for scan command */
672 (*last_cmd
)->cmd
.scan
= cmd_queue_alloc(sizeof(scan_command_t
));
673 (*last_cmd
)->cmd
.scan
->ir_scan
= 0;
674 (*last_cmd
)->cmd
.scan
->num_fields
= num_fields
;
675 (*last_cmd
)->cmd
.scan
->fields
= cmd_queue_alloc(num_fields
* sizeof(scan_field_t
));
676 (*last_cmd
)->cmd
.scan
->end_state
= state
;
679 (*last_cmd
)->cmd
.scan
->error_handler
= cmd_queue_alloc(sizeof(error_handler_t
));
680 *(*last_cmd
)->cmd
.scan
->error_handler
= *error_handler
;
684 (*last_cmd
)->cmd
.scan
->error_handler
= NULL
;
688 cmd_queue_end_state
= state
;
690 if (cmd_queue_cur_state
== TAP_TLR
&& cmd_queue_end_state
!= TAP_TLR
)
691 jtag_call_event_callbacks(JTAG_TRST_RELEASED
);
693 if (cmd_queue_end_state
== TAP_TLR
)
694 jtag_call_event_callbacks(JTAG_TRST_ASSERTED
);
696 cmd_queue_cur_state
= cmd_queue_end_state
;
698 for (i
= 0; i
< num_fields
; i
++)
700 int num_bits
= fields
[i
].num_bits
;
701 int num_bytes
= CEIL(fields
[i
].num_bits
, 8);
702 (*last_cmd
)->cmd
.scan
->fields
[i
].device
= fields
[i
].device
;
703 (*last_cmd
)->cmd
.scan
->fields
[i
].num_bits
= num_bits
;
704 (*last_cmd
)->cmd
.scan
->fields
[i
].out_value
= buf_cpy(fields
[i
].out_value
, cmd_queue_alloc(num_bytes
), num_bits
);
705 (*last_cmd
)->cmd
.scan
->fields
[i
].out_mask
= buf_cpy(fields
[i
].out_mask
, cmd_queue_alloc(num_bytes
), num_bits
);
706 (*last_cmd
)->cmd
.scan
->fields
[i
].in_value
= fields
[i
].in_value
;
707 (*last_cmd
)->cmd
.scan
->fields
[i
].in_check_value
= buf_cpy(fields
[i
].in_check_value
, cmd_queue_alloc(num_bytes
), num_bits
);
708 (*last_cmd
)->cmd
.scan
->fields
[i
].in_check_mask
= buf_cpy(fields
[i
].in_check_mask
, cmd_queue_alloc(num_bytes
), num_bits
);
709 (*last_cmd
)->cmd
.scan
->fields
[i
].in_handler
= fields
[i
].in_handler
;
710 (*last_cmd
)->cmd
.scan
->fields
[i
].in_handler_priv
= fields
[i
].in_handler_priv
;
715 int jtag_add_statemove(enum tap_state state
)
717 jtag_command_t
**last_cmd
= jtag_get_last_command_p();
721 WARNING("JTAG command queued, while TRST is low (TAP in reset)");
722 return ERROR_JTAG_TRST_ASSERTED
;
725 /* allocate memory for a new list member */
726 *last_cmd
= cmd_queue_alloc(sizeof(jtag_command_t
));
727 last_comand_pointer
= &((*last_cmd
)->next
);
728 (*last_cmd
)->next
= NULL
;
729 (*last_cmd
)->type
= JTAG_STATEMOVE
;
731 (*last_cmd
)->cmd
.statemove
= cmd_queue_alloc(sizeof(statemove_command_t
));
732 (*last_cmd
)->cmd
.statemove
->end_state
= state
;
735 cmd_queue_end_state
= state
;
737 if (cmd_queue_cur_state
== TAP_TLR
&& cmd_queue_end_state
!= TAP_TLR
)
738 jtag_call_event_callbacks(JTAG_TRST_RELEASED
);
740 if (cmd_queue_end_state
== TAP_TLR
)
741 jtag_call_event_callbacks(JTAG_TRST_ASSERTED
);
743 cmd_queue_cur_state
= cmd_queue_end_state
;
748 int jtag_add_pathmove(int num_states
, enum tap_state
*path
)
750 jtag_command_t
**last_cmd
= jtag_get_last_command_p();
755 WARNING("JTAG command queued, while TRST is low (TAP in reset)");
756 return ERROR_JTAG_TRST_ASSERTED
;
759 /* the last state has to be a stable state */
760 if (tap_move_map
[path
[num_states
- 1]] == -1)
762 ERROR("TAP path doesn't finish in a stable state");
763 return ERROR_JTAG_NOT_IMPLEMENTED
;
766 if (jtag
->support_pathmove
)
768 /* allocate memory for a new list member */
769 *last_cmd
= cmd_queue_alloc(sizeof(jtag_command_t
));
770 last_comand_pointer
= &((*last_cmd
)->next
);
771 (*last_cmd
)->next
= NULL
;
772 (*last_cmd
)->type
= JTAG_PATHMOVE
;
774 (*last_cmd
)->cmd
.pathmove
= cmd_queue_alloc(sizeof(pathmove_command_t
));
775 (*last_cmd
)->cmd
.pathmove
->num_states
= num_states
;
776 (*last_cmd
)->cmd
.pathmove
->path
= cmd_queue_alloc(sizeof(enum tap_state
) * num_states
);
778 for (i
= 0; i
< num_states
; i
++)
779 (*last_cmd
)->cmd
.pathmove
->path
[i
] = path
[i
];
783 /* validate the desired path, and see if it fits a default path */
788 for (i
= 0; i
< num_states
; i
++)
790 for (j
= i
; j
< num_states
; j
++)
792 if (tap_move_map
[path
[j
]] != -1)
799 if (begin
- end
<= 7) /* a default path spans no more than 7 states */
801 jtag_add_statemove(path
[end
]);
805 ERROR("encountered a TAP path that can't be fulfilled by default paths");
806 return ERROR_JTAG_NOT_IMPLEMENTED
;
813 if (cmd_queue_cur_state
== TAP_TLR
&& cmd_queue_end_state
!= TAP_TLR
)
814 jtag_call_event_callbacks(JTAG_TRST_RELEASED
);
816 if (cmd_queue_end_state
== TAP_TLR
)
817 jtag_call_event_callbacks(JTAG_TRST_ASSERTED
);
819 cmd_queue_cur_state
= path
[num_states
- 1];
824 int jtag_add_runtest(int num_cycles
, enum tap_state state
)
826 jtag_command_t
**last_cmd
= jtag_get_last_command_p();
830 WARNING("JTAG command queued, while TRST is low (TAP in reset)");
831 return ERROR_JTAG_TRST_ASSERTED
;
834 /* allocate memory for a new list member */
835 *last_cmd
= cmd_queue_alloc(sizeof(jtag_command_t
));
836 (*last_cmd
)->next
= NULL
;
837 last_comand_pointer
= &((*last_cmd
)->next
);
838 (*last_cmd
)->type
= JTAG_RUNTEST
;
840 (*last_cmd
)->cmd
.runtest
= cmd_queue_alloc(sizeof(runtest_command_t
));
841 (*last_cmd
)->cmd
.runtest
->num_cycles
= num_cycles
;
842 (*last_cmd
)->cmd
.runtest
->end_state
= state
;
845 cmd_queue_end_state
= state
;
847 if (cmd_queue_cur_state
== TAP_TLR
&& cmd_queue_end_state
!= TAP_TLR
)
848 jtag_call_event_callbacks(JTAG_TRST_RELEASED
);
850 if (cmd_queue_end_state
== TAP_TLR
)
851 jtag_call_event_callbacks(JTAG_TRST_ASSERTED
);
853 cmd_queue_cur_state
= cmd_queue_end_state
;
858 int jtag_add_reset(int req_trst
, int req_srst
)
860 int trst_with_tms
= 0;
862 jtag_command_t
**last_cmd
= jtag_get_last_command_p();
865 req_trst
= jtag_trst
;
868 req_srst
= jtag_srst
;
870 /* Make sure that jtag_reset_config allows the requested reset */
871 /* if SRST pulls TRST, we can't fulfill srst == 1 with trst == 0 */
872 if (((jtag_reset_config
& RESET_SRST_PULLS_TRST
) && (req_srst
== 1)) && (req_trst
== 0))
873 return ERROR_JTAG_RESET_WOULD_ASSERT_TRST
;
875 /* if TRST pulls SRST, we reset with TAP T-L-R */
876 if (((jtag_reset_config
& RESET_TRST_PULLS_SRST
) && (req_trst
== 1)) && (req_srst
== 0))
882 if (req_srst
&& !(jtag_reset_config
& RESET_HAS_SRST
))
884 ERROR("requested nSRST assertion, but the current configuration doesn't support this");
885 return ERROR_JTAG_RESET_CANT_SRST
;
888 if (req_trst
&& !(jtag_reset_config
& RESET_HAS_TRST
))
894 /* allocate memory for a new list member */
895 *last_cmd
= cmd_queue_alloc(sizeof(jtag_command_t
));
896 (*last_cmd
)->next
= NULL
;
897 last_comand_pointer
= &((*last_cmd
)->next
);
898 (*last_cmd
)->type
= JTAG_RESET
;
900 (*last_cmd
)->cmd
.reset
= cmd_queue_alloc(sizeof(reset_command_t
));
901 (*last_cmd
)->cmd
.reset
->trst
= req_trst
;
902 (*last_cmd
)->cmd
.reset
->srst
= req_srst
;
904 jtag_trst
= req_trst
;
905 jtag_srst
= req_srst
;
909 jtag_call_event_callbacks(JTAG_SRST_ASSERTED
);
913 jtag_call_event_callbacks(JTAG_SRST_RELEASED
);
914 if (jtag_nsrst_delay
)
915 jtag_add_sleep(jtag_nsrst_delay
* 1000);
920 last_cmd
= &((*last_cmd
)->next
);
922 /* allocate memory for a new list member */
923 *last_cmd
= cmd_queue_alloc(sizeof(jtag_command_t
));
924 (*last_cmd
)->next
= NULL
;
925 last_comand_pointer
= &((*last_cmd
)->next
);
926 (*last_cmd
)->type
= JTAG_STATEMOVE
;
928 (*last_cmd
)->cmd
.statemove
= cmd_queue_alloc(sizeof(statemove_command_t
));
929 (*last_cmd
)->cmd
.statemove
->end_state
= TAP_TLR
;
931 jtag_call_event_callbacks(JTAG_TRST_ASSERTED
);
932 cmd_queue_cur_state
= TAP_TLR
;
933 cmd_queue_end_state
= TAP_TLR
;
941 /* we just asserted nTRST, so we're now in Test-Logic-Reset,
942 * and inform possible listeners about this
944 cmd_queue_cur_state
= TAP_TLR
;
945 jtag_call_event_callbacks(JTAG_TRST_ASSERTED
);
949 /* the nTRST line got deasserted, so we're still in Test-Logic-Reset,
950 * but we might want to add a delay to give the TAP time to settle
952 if (jtag_ntrst_delay
)
953 jtag_add_sleep(jtag_ntrst_delay
* 1000);
960 int jtag_add_end_state(enum tap_state state
)
962 jtag_command_t
**last_cmd
= jtag_get_last_command_p();
964 /* allocate memory for a new list member */
965 *last_cmd
= cmd_queue_alloc(sizeof(jtag_command_t
));
966 (*last_cmd
)->next
= NULL
;
967 last_comand_pointer
= &((*last_cmd
)->next
);
968 (*last_cmd
)->type
= JTAG_END_STATE
;
970 (*last_cmd
)->cmd
.end_state
= cmd_queue_alloc(sizeof(end_state_command_t
));
971 (*last_cmd
)->cmd
.end_state
->end_state
= state
;
974 cmd_queue_end_state
= state
;
979 int jtag_add_sleep(u32 us
)
981 jtag_command_t
**last_cmd
= jtag_get_last_command_p();
983 /* allocate memory for a new list member */
984 *last_cmd
= cmd_queue_alloc(sizeof(jtag_command_t
));
985 (*last_cmd
)->next
= NULL
;
986 last_comand_pointer
= &((*last_cmd
)->next
);
987 (*last_cmd
)->type
= JTAG_SLEEP
;
989 (*last_cmd
)->cmd
.sleep
= cmd_queue_alloc(sizeof(sleep_command_t
));
990 (*last_cmd
)->cmd
.sleep
->us
= us
;
995 int jtag_scan_size(scan_command_t
*cmd
)
1000 /* count bits in scan command */
1001 for (i
=0; i
<cmd
->num_fields
; i
++)
1003 bit_count
+= cmd
->fields
[i
].num_bits
;
1009 int jtag_build_buffer(scan_command_t
*cmd
, u8
**buffer
)
1014 bit_count
= jtag_scan_size(cmd
);
1015 *buffer
= malloc(CEIL(bit_count
, 8));
1019 for (i
= 0; i
< cmd
->num_fields
; i
++)
1021 if (cmd
->fields
[i
].out_value
)
1023 #ifdef _DEBUG_JTAG_IO_
1024 char* char_buf
= buf_to_str(cmd
->fields
[i
].out_value
, (cmd
->fields
[i
].num_bits
> 64) ? 64 : cmd
->fields
[i
].num_bits
, 16);
1026 buf_set_buf(cmd
->fields
[i
].out_value
, 0, *buffer
, bit_count
, cmd
->fields
[i
].num_bits
);
1027 #ifdef _DEBUG_JTAG_IO_
1028 DEBUG("fields[%i].out_value: 0x%s", i
, char_buf
);
1033 bit_count
+= cmd
->fields
[i
].num_bits
;
1040 int jtag_read_buffer(u8
*buffer
, scan_command_t
*cmd
)
1046 /* we return ERROR_OK, unless a check fails, or a handler reports a problem */
1049 for (i
=0; i
< cmd
->num_fields
; i
++)
1051 /* if neither in_value, in_check_value nor in_handler
1052 * are specified we don't have to examine this field
1054 if (cmd
->fields
[i
].in_value
|| cmd
->fields
[i
].in_check_value
|| cmd
->fields
[i
].in_handler
)
1056 int num_bits
= cmd
->fields
[i
].num_bits
;
1057 u8
*captured
= buf_set_buf(buffer
, bit_count
, malloc(CEIL(num_bits
, 8)), 0, num_bits
);
1059 #ifdef _DEBUG_JTAG_IO_
1062 char_buf
= buf_to_str(captured
, (num_bits
> 64) ? 64 : num_bits
, 16);
1063 DEBUG("fields[%i].in_value: 0x%s", i
, char_buf
);
1067 if (cmd
->fields
[i
].in_value
)
1069 buf_cpy(captured
, cmd
->fields
[i
].in_value
, num_bits
);
1071 if (cmd
->fields
[i
].in_handler
)
1073 if (cmd
->fields
[i
].in_handler(cmd
->fields
[i
].in_value
, cmd
->fields
[i
].in_handler_priv
) != ERROR_OK
)
1075 WARNING("in_handler reported a failed check");
1076 retval
= ERROR_JTAG_QUEUE_FAILED
;
1081 /* no in_value specified, but a handler takes care of the scanned data */
1082 if (cmd
->fields
[i
].in_handler
&& (!cmd
->fields
[i
].in_value
))
1084 if (cmd
->fields
[i
].in_handler(captured
, cmd
->fields
[i
].in_handler_priv
) != ERROR_OK
)
1086 /* We're going to call the error:handler later, but if the in_handler
1087 * reported an error we report this failure upstream
1089 WARNING("in_handler reported a failed check");
1090 retval
= ERROR_JTAG_QUEUE_FAILED
;
1094 if (cmd
->fields
[i
].in_check_value
)
1096 int compare_failed
= 0;
1098 if (cmd
->fields
[i
].in_check_mask
)
1099 compare_failed
= buf_cmp_mask(captured
, cmd
->fields
[i
].in_check_value
, cmd
->fields
[i
].in_check_mask
, num_bits
);
1101 compare_failed
= buf_cmp(captured
, cmd
->fields
[i
].in_check_value
, num_bits
);
1105 if (cmd
->error_handler
)
1107 /* ask the error handler if once has been specified if this is a real problem */
1108 if (cmd
->error_handler
->error_handler(captured
, cmd
->error_handler
->error_handler_priv
) != ERROR_OK
)
1109 retval
= ERROR_JTAG_QUEUE_FAILED
;
1115 /* if there wasn't a handler specified, we report a failure */
1116 retval
= ERROR_JTAG_QUEUE_FAILED
;
1119 /* An error handler could have caught the failing check
1120 * only report a problem when there wasn't a handler, or if the handler
1121 * acknowledged the error
1125 char *captured_char
= buf_to_str(captured
, (num_bits
> 64) ? 64 : num_bits
, 16);
1126 char *in_check_value_char
= buf_to_str(cmd
->fields
[i
].in_check_value
, (num_bits
> 64) ? 64 : num_bits
, 16);
1128 if (cmd
->fields
[i
].in_check_mask
)
1130 char *in_check_mask_char
;
1131 in_check_mask_char
= buf_to_str(cmd
->fields
[i
].in_check_mask
, (num_bits
> 64) ? 64 : num_bits
, 16);
1132 WARNING("value captured during scan didn't pass the requested check: captured: 0x%s check_value: 0x%s check_mask: 0x%s", captured_char
, in_check_value_char
, in_check_mask_char
);
1133 free(in_check_mask_char
);
1137 WARNING("value captured during scan didn't pass the requested check: captured: 0x%s check_value: 0x%s", captured_char
, in_check_value_char
);
1140 free(captured_char
);
1141 free(in_check_value_char
);
1148 bit_count
+= cmd
->fields
[i
].num_bits
;
1154 enum scan_type
jtag_scan_type(scan_command_t
*cmd
)
1159 for (i
=0; i
< cmd
->num_fields
; i
++)
1161 if (cmd
->fields
[i
].in_check_value
|| cmd
->fields
[i
].in_value
|| cmd
->fields
[i
].in_handler
)
1163 if (cmd
->fields
[i
].out_value
)
1170 int jtag_execute_queue(void)
1174 retval
= jtag
->execute_queue();
1178 jtag_command_queue
= NULL
;
1179 last_comand_pointer
= &jtag_command_queue
;
1184 int jtag_cancel_queue(void)
1187 jtag_command_queue
= NULL
;
1188 last_comand_pointer
= &jtag_command_queue
;
1193 int jtag_reset_callback(enum jtag_event event
, void *priv
)
1195 jtag_device_t
*device
= priv
;
1199 if (event
== JTAG_TRST_ASSERTED
)
1201 buf_set_ones(device
->cur_instr
, device
->ir_length
);
1208 void jtag_sleep(u32 us
)
1213 /* Try to examine chain layout according to IEEE 1149.1 §12
1215 int jtag_examine_chain()
1217 jtag_device_t
*device
= jtag_devices
;
1219 u8 idcode_buffer
[JTAG_MAX_CHAIN_SIZE
* 4];
1222 int device_count
= 0;
1223 u8 zero_check
= 0x0;
1224 u8 one_check
= 0xff;
1227 field
.num_bits
= sizeof(idcode_buffer
) * 8;
1228 field
.out_value
= idcode_buffer
;
1229 field
.out_mask
= NULL
;
1230 field
.in_value
= idcode_buffer
;
1231 field
.in_check_value
= NULL
;
1232 field
.in_check_mask
= NULL
;
1233 field
.in_handler
= NULL
;
1234 field
.in_handler_priv
= NULL
;
1236 for (i
= 0; i
< JTAG_MAX_CHAIN_SIZE
; i
++)
1238 buf_set_u32(idcode_buffer
, i
* 32, 32, 0x000000FF);
1241 jtag_add_plain_dr_scan(1, &field
, TAP_TLR
, NULL
);
1242 jtag_execute_queue();
1244 for (i
= 0; i
< JTAG_MAX_CHAIN_SIZE
* 4; i
++)
1246 zero_check
|= idcode_buffer
[i
];
1247 one_check
&= idcode_buffer
[i
];
1250 /* if there wasn't a single non-zero bit or if all bits were one, the scan isn't valid */
1251 if ((zero_check
== 0x00) || (one_check
== 0xff))
1253 ERROR("JTAG communication failure, check connection, JTAG interface, target power etc.");
1254 return ERROR_JTAG_INIT_FAILED
;
1257 for (bit_count
= 0; bit_count
< (JTAG_MAX_CHAIN_SIZE
* 32) - 31;)
1259 u32 idcode
= buf_get_u32(idcode_buffer
, bit_count
, 32);
1260 if ((idcode
& 1) == 0)
1262 /* LSB must not be 0, this indicates a device in bypass */
1273 if (idcode
== 0x000000FF)
1275 /* End of chain (invalid manufacturer ID) */
1281 device
->idcode
= idcode
;
1282 device
= device
->next
;
1286 manufacturer
= (idcode
& 0xffe) >> 1;
1287 part
= (idcode
& 0xffff000) >> 12;
1288 version
= (idcode
& 0xf0000000) >> 28;
1290 DEBUG("JTAG device found: 0x%8.8x (Manufacturer: 0x%3.3x, Part: 0x%4.4x, Version: 0x%1.1x",
1291 idcode
, manufacturer
, part
, version
);
1297 /* see if number of discovered devices matches configuration */
1298 if (device_count
!= jtag_num_devices
)
1300 ERROR("number of discovered devices in JTAG chain (%i) doesn't match configuration (%i)",
1301 device_count
, jtag_num_devices
);
1302 ERROR("check the config file and ensure proper JTAG communication (connections, speed, ...)");
1303 return ERROR_JTAG_INIT_FAILED
;
1309 int jtag_validate_chain()
1311 jtag_device_t
*device
= jtag_devices
;
1312 int total_ir_length
= 0;
1319 total_ir_length
+= device
->ir_length
;
1320 device
= device
->next
;
1323 total_ir_length
+= 2;
1324 ir_test
= malloc(CEIL(total_ir_length
, 8));
1325 buf_set_ones(ir_test
, total_ir_length
);
1328 field
.num_bits
= total_ir_length
;
1329 field
.out_value
= ir_test
;
1330 field
.out_mask
= NULL
;
1331 field
.in_value
= ir_test
;
1332 field
.in_check_value
= NULL
;
1333 field
.in_check_mask
= NULL
;
1334 field
.in_handler
= NULL
;
1335 field
.in_handler_priv
= NULL
;
1337 jtag_add_plain_ir_scan(1, &field
, TAP_TLR
, NULL
);
1338 jtag_execute_queue();
1340 device
= jtag_devices
;
1343 if (buf_get_u32(ir_test
, chain_pos
, 2) != 0x1)
1345 char *cbuf
= buf_to_str(ir_test
, total_ir_length
, 16);
1346 ERROR("Error validating JTAG scan chain, IR mismatch, scan returned 0x%s", cbuf
);
1348 return ERROR_JTAG_INIT_FAILED
;
1350 chain_pos
+= device
->ir_length
;
1351 device
= device
->next
;
1354 if (buf_get_u32(ir_test
, chain_pos
, 2) != 0x3)
1356 char *cbuf
= buf_to_str(ir_test
, total_ir_length
, 16);
1357 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");
1458 /* no valid interface was found (i.e. the configuration option,
1459 * didn't match one of the compiled-in interfaces
1461 ERROR("No valid jtag interface found (%s)", jtag_interface
);
1462 ERROR("compiled-in jtag interfaces:");
1463 for (i
= 0; jtag_interfaces
[i
]; i
++)
1465 ERROR("%i: %s", i
, jtag_interfaces
[i
]->name
);
1469 return ERROR_JTAG_INVALID_INTERFACE
;
1472 int handle_interface_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
1476 /* only if the configuration var isn't overwritten from cmdline */
1477 if (!jtag_interface
)
1479 if (args
[0] && (args
[0][0] != 0))
1481 for (i
=0; jtag_interfaces
[i
]; i
++)
1483 if (strcmp(args
[0], jtag_interfaces
[i
]->name
) == 0)
1485 if (jtag_interfaces
[i
]->register_commands(cmd_ctx
) != ERROR_OK
)
1488 jtag_interface
= jtag_interfaces
[i
]->name
;
1495 /* remember the requested interface name, so we can complain about it later */
1496 jtag_interface
= strdup(args
[0]);
1497 DEBUG("'interface' command didn't specify a valid interface");
1503 int handle_jtag_device_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
1505 jtag_device_t
**last_device_p
= &jtag_devices
;
1509 while ((*last_device_p
)->next
)
1510 last_device_p
= &((*last_device_p
)->next
);
1511 last_device_p
= &((*last_device_p
)->next
);
1517 *last_device_p
= malloc(sizeof(jtag_device_t
));
1518 (*last_device_p
)->ir_length
= strtoul(args
[0], NULL
, 0);
1520 (*last_device_p
)->expected
= malloc((*last_device_p
)->ir_length
);
1521 buf_set_u32((*last_device_p
)->expected
, 0, (*last_device_p
)->ir_length
, strtoul(args
[1], NULL
, 0));
1522 (*last_device_p
)->expected_mask
= malloc((*last_device_p
)->ir_length
);
1523 buf_set_u32((*last_device_p
)->expected_mask
, 0, (*last_device_p
)->ir_length
, strtoul(args
[2], NULL
, 0));
1525 (*last_device_p
)->cur_instr
= malloc((*last_device_p
)->ir_length
);
1526 (*last_device_p
)->bypass
= 1;
1527 buf_set_ones((*last_device_p
)->cur_instr
, (*last_device_p
)->ir_length
);
1529 (*last_device_p
)->next
= NULL
;
1531 jtag_register_event_callback(jtag_reset_callback
, (*last_device_p
));
1538 int handle_scan_chain_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
1540 jtag_device_t
*device
= jtag_devices
;
1541 int device_count
= 0;
1545 u32 expected
, expected_mask
, cur_instr
;
1546 expected
= buf_get_u32(device
->expected
, 0, device
->ir_length
);
1547 expected_mask
= buf_get_u32(device
->expected_mask
, 0, device
->ir_length
);
1548 cur_instr
= buf_get_u32(device
->cur_instr
, 0, device
->ir_length
);
1549 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
);
1550 device
= device
->next
;
1557 int handle_reset_config_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
1561 if (strcmp(args
[0], "none") == 0)
1562 jtag_reset_config
= RESET_NONE
;
1563 else if (strcmp(args
[0], "trst_only") == 0)
1564 jtag_reset_config
= RESET_HAS_TRST
;
1565 else if (strcmp(args
[0], "srst_only") == 0)
1566 jtag_reset_config
= RESET_HAS_SRST
;
1567 else if (strcmp(args
[0], "trst_and_srst") == 0)
1568 jtag_reset_config
= RESET_TRST_AND_SRST
;
1571 ERROR("invalid reset_config argument");
1578 if (strcmp(args
[1], "srst_pulls_trst") == 0)
1579 jtag_reset_config
|= RESET_SRST_PULLS_TRST
;
1580 else if (strcmp(args
[1], "trst_pulls_srst") == 0)
1581 jtag_reset_config
|= RESET_TRST_PULLS_SRST
;
1582 else if (strcmp(args
[1], "combined") == 0)
1583 jtag_reset_config
|= RESET_SRST_PULLS_TRST
| RESET_TRST_PULLS_SRST
;
1584 else if (strcmp(args
[1], "separate") == 0)
1585 jtag_reset_config
&= ~(RESET_SRST_PULLS_TRST
| RESET_TRST_PULLS_SRST
);
1588 ERROR("invalid reset_config argument");
1595 if (strcmp(args
[2], "trst_open_drain") == 0)
1596 jtag_reset_config
|= RESET_TRST_OPEN_DRAIN
;
1597 else if (strcmp(args
[2], "trst_push_pull") == 0)
1598 jtag_reset_config
&= ~RESET_TRST_OPEN_DRAIN
;
1601 ERROR("invalid reset_config argument");
1608 if (strcmp(args
[3], "srst_push_pull") == 0)
1609 jtag_reset_config
|= RESET_SRST_PUSH_PULL
;
1610 else if (strcmp(args
[3], "srst_open_drain") == 0)
1611 jtag_reset_config
&= ~RESET_SRST_PUSH_PULL
;
1614 ERROR("invalid reset_config argument");
1622 int handle_jtag_nsrst_delay_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
1626 ERROR("jtag_nsrst_delay <ms> command takes one required argument");
1631 jtag_nsrst_delay
= strtoul(args
[0], NULL
, 0);
1637 int handle_jtag_ntrst_delay_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
1641 ERROR("jtag_ntrst_delay <ms> command takes one required argument");
1646 jtag_ntrst_delay
= strtoul(args
[0], NULL
, 0);
1652 int handle_jtag_speed_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
1655 command_print(cmd_ctx
, "jtag_speed: %i", jtag_speed
);
1659 /* this command can be called during CONFIG,
1660 * in which case jtag isn't initialized */
1662 jtag
->speed(strtoul(args
[0], NULL
, 0));
1664 jtag_speed
= strtoul(args
[0], NULL
, 0);
1670 int handle_endstate_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
1672 enum tap_state state
;
1676 command_print(cmd_ctx
, "usage: endstate <tap_state>");
1680 for (state
= 0; state
< 16; state
++)
1682 if (strcmp(args
[0], tap_state_strings
[state
]) == 0)
1684 jtag_add_end_state(state
);
1685 jtag_execute_queue();
1689 command_print(cmd_ctx
, "current endstate: %s", tap_state_strings
[end_state
]);
1694 int handle_jtag_reset_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
1698 char *usage
= "usage: jtag_reset <trst> <srst>";
1703 command_print(cmd_ctx
, usage
);
1707 if (args
[0][0] == '1')
1709 else if (args
[0][0] == '0')
1713 command_print(cmd_ctx
, usage
);
1717 if (args
[1][0] == '1')
1719 else if (args
[1][0] == '0')
1723 command_print(cmd_ctx
, usage
);
1727 if ((retval
= jtag_add_reset(trst
, srst
)) != ERROR_OK
)
1731 case ERROR_JTAG_RESET_WOULD_ASSERT_TRST
:
1732 command_print(cmd_ctx
, "requested reset would assert trst\nif this is acceptable, use jtag_reset 1 %c", args
[1][0]);
1734 case ERROR_JTAG_RESET_CANT_SRST
:
1735 command_print(cmd_ctx
, "can't assert srst because the current reset_config doesn't support it");
1738 command_print(cmd_ctx
, "unknown error");
1741 jtag_execute_queue();
1746 int handle_runtest_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
1750 command_print(cmd_ctx
, "usage: runtest <num_cycles>");
1754 jtag_add_runtest(strtol(args
[0], NULL
, 0), -1);
1755 jtag_execute_queue();
1761 int handle_statemove_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
1763 enum tap_state state
;
1768 for (state
= 0; state
< 16; state
++)
1770 if (strcmp(args
[0], tap_state_strings
[state
]) == 0)
1777 jtag_add_statemove(state
);
1778 jtag_execute_queue();
1784 int handle_irscan_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
1787 scan_field_t
*fields
;
1789 if ((argc
< 2) || (argc
% 2))
1791 command_print(cmd_ctx
, "usage: irscan <device> <instr> [dev2] [instr2] ...");
1795 fields
= malloc(sizeof(scan_field_t
) * argc
/ 2);
1797 for (i
= 0; i
< argc
/ 2; i
++)
1799 int device
= strtoul(args
[i
*2], NULL
, 0);
1800 int field_size
= jtag_get_device(device
)->ir_length
;
1801 fields
[i
].device
= device
;
1802 fields
[i
].out_value
= malloc(CEIL(field_size
, 8));
1803 buf_set_u32(fields
[i
].out_value
, 0, field_size
, strtoul(args
[i
*2+1], NULL
, 0));
1804 fields
[i
].out_mask
= NULL
;
1805 fields
[i
].in_value
= NULL
;
1806 fields
[i
].in_check_mask
= NULL
;
1807 fields
[i
].in_handler
= NULL
;
1808 fields
[i
].in_handler_priv
= NULL
;
1811 jtag_add_ir_scan(argc
/ 2, fields
, -1, NULL
);
1812 jtag_execute_queue();
1814 for (i
= 0; i
< argc
/ 2; i
++)
1815 free(fields
[i
].out_value
);
1822 int handle_drscan_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
1824 scan_field_t
*fields
;
1826 int field_count
= 0;
1830 if ((argc
< 2) || (argc
% 2))
1832 command_print(cmd_ctx
, "usage: drscan <device> <var> [dev2] [var2]");
1836 for (i
= 0; i
< argc
; i
+=2)
1838 var
= get_var_by_namenum(args
[i
+1]);
1841 num_fields
+= var
->num_fields
;
1845 command_print(cmd_ctx
, "variable %s doesn't exist", args
[i
+1]);
1850 fields
= malloc(sizeof(scan_field_t
) * num_fields
);
1852 for (i
= 0; i
< argc
; i
+=2)
1854 var
= get_var_by_namenum(args
[i
+1]);
1856 for (j
= 0; j
< var
->num_fields
; j
++)
1858 fields
[field_count
].device
= strtol(args
[i
], NULL
, 0);
1859 fields
[field_count
].num_bits
= var
->fields
[j
].num_bits
;
1860 fields
[field_count
].out_value
= malloc(CEIL(var
->fields
[j
].num_bits
, 8));
1861 buf_set_u32(fields
[field_count
].out_value
, 0, var
->fields
[j
].num_bits
, var
->fields
[j
].value
);
1862 fields
[field_count
].out_mask
= NULL
;
1863 fields
[field_count
].in_value
= fields
[field_count
].out_value
;
1864 fields
[field_count
].in_check_mask
= NULL
;
1865 fields
[field_count
].in_check_value
= NULL
;
1866 fields
[field_count
].in_handler
= field_le_to_host
;
1867 fields
[field_count
++].in_handler_priv
= &(var
->fields
[j
]);
1871 jtag_add_dr_scan(num_fields
, fields
, -1, NULL
);
1872 jtag_execute_queue();
1874 for (i
= 0; i
< argc
/ 2; i
++)
1875 free(fields
[i
].out_value
);
1882 int handle_verify_ircapture_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
1886 command_print(cmd_ctx
, "verify Capture-IR is %s", (jtag_verify_capture_ir
) ? "enabled": "disabled");
1890 if (strcmp(args
[0], "enable") == 0)
1892 jtag_verify_capture_ir
= 1;
1894 else if (strcmp(args
[0], "disable") == 0)
1896 jtag_verify_capture_ir
= 0;
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