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"
37 /* this allows JTAG devices to implement the entire jtag_xxx() layer in hw/sw */
38 #define INTERFACE(a) a
42 /* note that this is not marked as static as it must be available from outside jtag.c for those
43 that implement the jtag_xxx() minidriver layer
45 int jtag_error
=ERROR_OK
;
48 char* tap_state_strings
[16] =
51 "sds", "cd", "sd", "e1d", "pd", "e2d", "ud",
53 "sis", "ci", "si", "e1i", "pi", "e2i", "ui"
56 typedef struct cmd_queue_page_s
60 struct cmd_queue_page_s
*next
;
63 #define CMD_QUEUE_PAGE_SIZE (1024 * 1024)
64 static cmd_queue_page_t
*cmd_queue_pages
= NULL
;
66 /* tap_move[i][j]: tap movement command to go from state i to state j
74 * SD->SD and SI->SI have to be caught in interface specific code
78 /* TLR RTI SD PD SI PI */
79 {0x7f, 0x00, 0x17, 0x0a, 0x1b, 0x16}, /* TLR */
80 {0x7f, 0x00, 0x25, 0x05, 0x2b, 0x0b}, /* RTI */
81 {0x7f, 0x31, 0x00, 0x01, 0x0f, 0x2f}, /* SD */
82 {0x7f, 0x30, 0x20, 0x17, 0x1e, 0x2f}, /* PD */
83 {0x7f, 0x31, 0x07, 0x17, 0x00, 0x01}, /* SI */
84 {0x7f, 0x30, 0x1c, 0x17, 0x20, 0x2f} /* PI */
87 int tap_move_map
[16] = {
88 0, -1, -1, 2, -1, 3, -1, -1,
89 1, -1, -1, 4, -1, 5, -1, -1
92 tap_transition_t tap_transitions
[16] =
94 {TAP_TLR
, TAP_RTI
}, /* TLR */
95 {TAP_SIS
, TAP_CD
}, /* SDS */
96 {TAP_E1D
, TAP_SD
}, /* CD */
97 {TAP_E1D
, TAP_SD
}, /* SD */
98 {TAP_UD
, TAP_PD
}, /* E1D */
99 {TAP_E2D
, TAP_PD
}, /* PD */
100 {TAP_UD
, TAP_SD
}, /* E2D */
101 {TAP_SDS
, TAP_RTI
}, /* UD */
102 {TAP_SDS
, TAP_RTI
}, /* RTI */
103 {TAP_TLR
, TAP_CI
}, /* SIS */
104 {TAP_E1I
, TAP_SI
}, /* CI */
105 {TAP_E1I
, TAP_SI
}, /* SI */
106 {TAP_UI
, TAP_PI
}, /* E1I */
107 {TAP_E2I
, TAP_PI
}, /* PI */
108 {TAP_UI
, TAP_SI
}, /* E2I */
109 {TAP_SDS
, TAP_RTI
} /* UI */
112 char* jtag_event_strings
[] =
120 enum tap_state end_state
= TAP_TLR
;
121 enum tap_state cur_state
= TAP_TLR
;
125 jtag_command_t
*jtag_command_queue
= NULL
;
126 jtag_command_t
**last_comand_pointer
= &jtag_command_queue
;
127 jtag_device_t
*jtag_devices
= NULL
;
128 int jtag_num_devices
= 0;
129 int jtag_ir_scan_size
= 0;
130 enum reset_types jtag_reset_config
= RESET_NONE
;
131 enum tap_state cmd_queue_end_state
= TAP_TLR
;
132 enum tap_state cmd_queue_cur_state
= TAP_TLR
;
134 int jtag_verify_capture_ir
= 1;
136 /* how long the OpenOCD should wait before attempting JTAG communication after reset lines deasserted (in ms) */
137 int jtag_nsrst_delay
= 0; /* default to no nSRST delay */
138 int jtag_ntrst_delay
= 0; /* default to no nTRST delay */
140 /* maximum number of JTAG devices expected in the chain
142 #define JTAG_MAX_CHAIN_SIZE 20
144 /* callbacks to inform high-level handlers about JTAG state changes */
145 jtag_event_callback_t
*jtag_event_callbacks
;
147 /* jtag interfaces (parport, FTDI-USB, TI-USB, ...)
149 #if BUILD_PARPORT == 1
150 extern jtag_interface_t parport_interface
;
153 #if BUILD_FT2232_FTD2XX == 1
154 extern jtag_interface_t ft2232_interface
;
157 #if BUILD_FT2232_LIBFTDI == 1
158 extern jtag_interface_t ft2232_interface
;
161 #if BUILD_AMTJTAGACCEL == 1
162 extern jtag_interface_t amt_jtagaccel_interface
;
165 #if BUILD_EP93XX == 1
166 extern jtag_interface_t ep93xx_interface
;
169 #if BUILD_AT91RM9200 == 1
170 extern jtag_interface_t at91rm9200_interface
;
173 #if BUILD_GW16012 == 1
174 extern jtag_interface_t gw16012_interface
;
177 #if BUILD_PRESTO_LIBFTDI == 1 || BUILD_PRESTO_FTD2XX == 1
178 extern jtag_interface_t presto_interface
;
181 #if BUILD_USBPROG == 1
182 extern jtag_interface_t usbprog_interface
;
185 jtag_interface_t
*jtag_interfaces
[] = {
186 #if BUILD_PARPORT == 1
189 #if BUILD_FT2232_FTD2XX == 1
192 #if BUILD_FT2232_LIBFTDI == 1
195 #if BUILD_AMTJTAGACCEL == 1
196 &amt_jtagaccel_interface
,
198 #if BUILD_EP93XX == 1
201 #if BUILD_AT91RM9200 == 1
202 &at91rm9200_interface
,
204 #if BUILD_GW16012 == 1
207 #if BUILD_PRESTO_LIBFTDI == 1 || BUILD_PRESTO_FTD2XX == 1
210 #if BUILD_USBPROG == 1
216 jtag_interface_t
*jtag
= NULL
;
219 jtag_interface_t
*jtag_interface
= NULL
;
223 /* forward declarations */
224 int jtag_add_statemove(enum tap_state endstate
);
225 int jtag_add_pathmove(int num_states
, enum tap_state
*path
);
226 int jtag_add_runtest(int num_cycles
, enum tap_state endstate
);
227 int jtag_add_reset(int trst
, int srst
);
228 int jtag_add_end_state(enum tap_state endstate
);
229 int jtag_add_sleep(u32 us
);
230 int jtag_execute_queue(void);
231 int jtag_cancel_queue(void);
234 int handle_interface_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
);
235 int handle_jtag_speed_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
);
236 int handle_jtag_device_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
);
237 int handle_reset_config_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
);
238 int handle_jtag_nsrst_delay_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
);
239 int handle_jtag_ntrst_delay_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
);
241 int handle_scan_chain_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
);
243 int handle_endstate_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
);
244 int handle_jtag_reset_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
);
245 int handle_runtest_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
);
246 int handle_statemove_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
);
247 int handle_irscan_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
);
248 int handle_drscan_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
);
250 int handle_verify_ircapture_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
);
252 int jtag_register_event_callback(int (*callback
)(enum jtag_event event
, void *priv
), void *priv
)
254 jtag_event_callback_t
**callbacks_p
= &jtag_event_callbacks
;
256 if (callback
== NULL
)
258 return ERROR_INVALID_ARGUMENTS
;
263 while ((*callbacks_p
)->next
)
264 callbacks_p
= &((*callbacks_p
)->next
);
265 callbacks_p
= &((*callbacks_p
)->next
);
268 (*callbacks_p
) = malloc(sizeof(jtag_event_callback_t
));
269 (*callbacks_p
)->callback
= callback
;
270 (*callbacks_p
)->priv
= priv
;
271 (*callbacks_p
)->next
= NULL
;
276 int jtag_unregister_event_callback(int (*callback
)(enum jtag_event event
, void *priv
))
278 jtag_event_callback_t
**callbacks_p
= &jtag_event_callbacks
;
280 if (callback
== NULL
)
282 return ERROR_INVALID_ARGUMENTS
;
287 jtag_event_callback_t
**next
= &((*callbacks_p
)->next
);
288 if ((*callbacks_p
)->callback
== callback
)
291 *callbacks_p
= *next
;
299 int jtag_call_event_callbacks(enum jtag_event event
)
301 jtag_event_callback_t
*callback
= jtag_event_callbacks
;
303 DEBUG("jtag event: %s", jtag_event_strings
[event
]);
307 callback
->callback(event
, callback
->priv
);
308 callback
= callback
->next
;
314 /* returns a pointer to the pointer of the last command in queue
315 * this may be a pointer to the root pointer (jtag_command_queue)
316 * or to the next member of the last but one command
318 jtag_command_t
** jtag_get_last_command_p(void)
320 /* jtag_command_t *cmd = jtag_command_queue;
326 return &jtag_command_queue;
330 return last_comand_pointer
;
333 /* returns a pointer to the n-th device in the scan chain */
334 jtag_device_t
* jtag_get_device(int num
)
336 jtag_device_t
*device
= jtag_devices
;
343 device
= device
->next
;
347 ERROR("jtag device number %d not defined", num
);
351 void* cmd_queue_alloc(size_t size
)
353 cmd_queue_page_t
**p_page
= &cmd_queue_pages
;
358 while ((*p_page
)->next
)
359 p_page
= &((*p_page
)->next
);
360 if (CMD_QUEUE_PAGE_SIZE
- (*p_page
)->used
< size
)
361 p_page
= &((*p_page
)->next
);
366 *p_page
= malloc(sizeof(cmd_queue_page_t
));
368 (*p_page
)->address
= malloc(CMD_QUEUE_PAGE_SIZE
);
369 (*p_page
)->next
= NULL
;
372 offset
= (*p_page
)->used
;
373 (*p_page
)->used
+= size
;
375 u8
*t
=(u8
*)((*p_page
)->address
);
379 void cmd_queue_free()
381 cmd_queue_page_t
*page
= cmd_queue_pages
;
385 cmd_queue_page_t
*last
= page
;
391 cmd_queue_pages
= NULL
;
394 int jtag_add_ir_scan(int num_fields
, scan_field_t
*fields
, enum tap_state state
)
398 WARNING("JTAG command queued, while TRST is low (TAP in reset)");
399 jtag_error
=ERROR_JTAG_TRST_ASSERTED
;
400 return ERROR_JTAG_TRST_ASSERTED
;
404 cmd_queue_end_state
= state
;
406 if (cmd_queue_cur_state
== TAP_TLR
&& cmd_queue_end_state
!= TAP_TLR
)
407 jtag_call_event_callbacks(JTAG_TRST_RELEASED
);
409 if (cmd_queue_end_state
== TAP_TLR
)
410 jtag_call_event_callbacks(JTAG_TRST_ASSERTED
);
412 cmd_queue_cur_state
= cmd_queue_end_state
;
414 int retval
=interface_jtag_add_ir_scan(num_fields
, fields
, state
);
415 if (retval
!=ERROR_OK
)
420 int INTERFACE(interface_jtag_add_ir_scan
)(int num_fields
, scan_field_t
*fields
, enum tap_state state
)
422 jtag_command_t
**last_cmd
;
423 jtag_device_t
*device
;
428 last_cmd
= jtag_get_last_command_p();
430 /* allocate memory for a new list member */
431 *last_cmd
= cmd_queue_alloc(sizeof(jtag_command_t
));
432 (*last_cmd
)->next
= NULL
;
433 last_comand_pointer
= &((*last_cmd
)->next
);
434 (*last_cmd
)->type
= JTAG_SCAN
;
436 /* allocate memory for ir scan command */
437 (*last_cmd
)->cmd
.scan
= cmd_queue_alloc(sizeof(scan_command_t
));
438 (*last_cmd
)->cmd
.scan
->ir_scan
= 1;
439 (*last_cmd
)->cmd
.scan
->num_fields
= jtag_num_devices
; /* one field per device */
440 (*last_cmd
)->cmd
.scan
->fields
= cmd_queue_alloc(jtag_num_devices
* sizeof(scan_field_t
));
441 (*last_cmd
)->cmd
.scan
->end_state
= state
;
443 for (i
= 0; i
< jtag_num_devices
; i
++)
446 device
= jtag_get_device(i
);
447 scan_size
= device
->ir_length
;
448 (*last_cmd
)->cmd
.scan
->fields
[i
].device
= i
;
449 (*last_cmd
)->cmd
.scan
->fields
[i
].num_bits
= scan_size
;
450 (*last_cmd
)->cmd
.scan
->fields
[i
].in_value
= NULL
;
451 (*last_cmd
)->cmd
.scan
->fields
[i
].in_handler
= NULL
; /* disable verification by default */
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
);
462 if (jtag_verify_capture_ir
)
464 if (fields
[j
].in_handler
==NULL
)
466 jtag_set_check_value((*last_cmd
)->cmd
.scan
->fields
+i
, device
->expected
, device
->expected_mask
, NULL
);
469 (*last_cmd
)->cmd
.scan
->fields
[i
].in_handler
= fields
[j
].in_handler
;
470 (*last_cmd
)->cmd
.scan
->fields
[i
].in_handler_priv
= fields
[j
].in_handler_priv
;
471 (*last_cmd
)->cmd
.scan
->fields
[i
].in_check_value
= device
->expected
;
472 (*last_cmd
)->cmd
.scan
->fields
[i
].in_check_mask
= device
->expected_mask
;
483 /* if a device isn't listed, set it to BYPASS */
484 (*last_cmd
)->cmd
.scan
->fields
[i
].out_value
= buf_set_ones(cmd_queue_alloc(CEIL(scan_size
, 8)), scan_size
);
485 (*last_cmd
)->cmd
.scan
->fields
[i
].out_mask
= NULL
;
490 /* update device information */
491 buf_cpy((*last_cmd
)->cmd
.scan
->fields
[i
].out_value
, jtag_get_device(i
)->cur_instr
, scan_size
);
497 int jtag_add_plain_ir_scan(int num_fields
, scan_field_t
*fields
, enum tap_state state
)
499 jtag_command_t
**last_cmd
;
504 WARNING("JTAG command queued, while TRST is low (TAP in reset)");
505 return ERROR_JTAG_TRST_ASSERTED
;
508 last_cmd
= jtag_get_last_command_p();
510 /* allocate memory for a new list member */
511 *last_cmd
= cmd_queue_alloc(sizeof(jtag_command_t
));
512 (*last_cmd
)->next
= NULL
;
513 last_comand_pointer
= &((*last_cmd
)->next
);
514 (*last_cmd
)->type
= JTAG_SCAN
;
516 /* allocate memory for ir scan command */
517 (*last_cmd
)->cmd
.scan
= cmd_queue_alloc(sizeof(scan_command_t
));
518 (*last_cmd
)->cmd
.scan
->ir_scan
= 1;
519 (*last_cmd
)->cmd
.scan
->num_fields
= num_fields
;
520 (*last_cmd
)->cmd
.scan
->fields
= cmd_queue_alloc(num_fields
* sizeof(scan_field_t
));
521 (*last_cmd
)->cmd
.scan
->end_state
= state
;
524 cmd_queue_end_state
= state
;
526 if (cmd_queue_cur_state
== TAP_TLR
&& cmd_queue_end_state
!= TAP_TLR
)
527 jtag_call_event_callbacks(JTAG_TRST_RELEASED
);
529 if (cmd_queue_end_state
== TAP_TLR
)
530 jtag_call_event_callbacks(JTAG_TRST_ASSERTED
);
532 cmd_queue_cur_state
= cmd_queue_end_state
;
534 for (i
= 0; i
< num_fields
; i
++)
536 int num_bits
= fields
[i
].num_bits
;
537 int num_bytes
= CEIL(fields
[i
].num_bits
, 8);
538 (*last_cmd
)->cmd
.scan
->fields
[i
].device
= fields
[i
].device
;
539 (*last_cmd
)->cmd
.scan
->fields
[i
].num_bits
= num_bits
;
540 (*last_cmd
)->cmd
.scan
->fields
[i
].out_value
= buf_cpy(fields
[i
].out_value
, cmd_queue_alloc(num_bytes
), num_bits
);
541 (*last_cmd
)->cmd
.scan
->fields
[i
].out_mask
= buf_cpy(fields
[i
].out_mask
, cmd_queue_alloc(num_bytes
), num_bits
);
542 (*last_cmd
)->cmd
.scan
->fields
[i
].in_value
= fields
[i
].in_value
;
543 (*last_cmd
)->cmd
.scan
->fields
[i
].in_check_value
= fields
[i
].in_check_value
;
544 (*last_cmd
)->cmd
.scan
->fields
[i
].in_check_mask
= fields
[i
].in_check_mask
;
545 (*last_cmd
)->cmd
.scan
->fields
[i
].in_handler
= NULL
;
546 (*last_cmd
)->cmd
.scan
->fields
[i
].in_handler_priv
= NULL
;
551 int jtag_add_dr_scan(int num_fields
, scan_field_t
*fields
, enum tap_state state
)
554 int bypass_devices
= 0;
556 jtag_command_t
**last_cmd
= jtag_get_last_command_p();
557 jtag_device_t
*device
= jtag_devices
;
562 WARNING("JTAG command queued, while TRST is low (TAP in reset)");
563 return ERROR_JTAG_TRST_ASSERTED
;
566 /* count devices in bypass */
571 device
= device
->next
;
574 /* allocate memory for a new list member */
575 *last_cmd
= cmd_queue_alloc(sizeof(jtag_command_t
));
576 last_comand_pointer
= &((*last_cmd
)->next
);
577 (*last_cmd
)->next
= NULL
;
578 (*last_cmd
)->type
= JTAG_SCAN
;
580 /* allocate memory for dr scan command */
581 (*last_cmd
)->cmd
.scan
= cmd_queue_alloc(sizeof(scan_command_t
));
582 (*last_cmd
)->cmd
.scan
->ir_scan
= 0;
583 (*last_cmd
)->cmd
.scan
->num_fields
= num_fields
+ bypass_devices
;
584 (*last_cmd
)->cmd
.scan
->fields
= cmd_queue_alloc((num_fields
+ bypass_devices
) * sizeof(scan_field_t
));
585 (*last_cmd
)->cmd
.scan
->end_state
= state
;
588 cmd_queue_end_state
= state
;
590 if (cmd_queue_cur_state
== TAP_TLR
&& cmd_queue_end_state
!= TAP_TLR
)
591 jtag_call_event_callbacks(JTAG_TRST_RELEASED
);
593 if (cmd_queue_end_state
== TAP_TLR
)
594 jtag_call_event_callbacks(JTAG_TRST_ASSERTED
);
596 cmd_queue_cur_state
= cmd_queue_end_state
;
598 for (i
= 0; i
< jtag_num_devices
; i
++)
601 (*last_cmd
)->cmd
.scan
->fields
[field_count
].device
= i
;
603 for (j
= 0; j
< num_fields
; j
++)
605 if (i
== fields
[j
].device
)
608 scan_size
= fields
[j
].num_bits
;
609 (*last_cmd
)->cmd
.scan
->fields
[field_count
].num_bits
= scan_size
;
610 (*last_cmd
)->cmd
.scan
->fields
[field_count
].out_value
= buf_cpy(fields
[j
].out_value
, cmd_queue_alloc(CEIL(scan_size
, 8)), scan_size
);
611 (*last_cmd
)->cmd
.scan
->fields
[field_count
].out_mask
= buf_cpy(fields
[j
].out_mask
, cmd_queue_alloc(CEIL(scan_size
, 8)), scan_size
);
612 (*last_cmd
)->cmd
.scan
->fields
[field_count
].in_value
= fields
[j
].in_value
;
613 (*last_cmd
)->cmd
.scan
->fields
[field_count
].in_check_value
= fields
[j
].in_check_value
;
614 (*last_cmd
)->cmd
.scan
->fields
[field_count
].in_check_mask
= fields
[j
].in_check_mask
;
615 (*last_cmd
)->cmd
.scan
->fields
[field_count
].in_handler
= fields
[j
].in_handler
;
616 (*last_cmd
)->cmd
.scan
->fields
[field_count
++].in_handler_priv
= fields
[j
].in_handler_priv
;
621 /* if a device isn't listed, the BYPASS register should be selected */
622 if (!jtag_get_device(i
)->bypass
)
624 ERROR("BUG: no scan data for a device not in BYPASS");
628 /* program the scan field to 1 bit length, and ignore it's value */
629 (*last_cmd
)->cmd
.scan
->fields
[field_count
].num_bits
= 1;
630 (*last_cmd
)->cmd
.scan
->fields
[field_count
].out_value
= NULL
;
631 (*last_cmd
)->cmd
.scan
->fields
[field_count
].out_mask
= NULL
;
632 (*last_cmd
)->cmd
.scan
->fields
[field_count
].in_value
= NULL
;
633 (*last_cmd
)->cmd
.scan
->fields
[field_count
].in_check_value
= NULL
;
634 (*last_cmd
)->cmd
.scan
->fields
[field_count
].in_check_mask
= NULL
;
635 (*last_cmd
)->cmd
.scan
->fields
[field_count
].in_handler
= NULL
;
636 (*last_cmd
)->cmd
.scan
->fields
[field_count
++].in_handler_priv
= NULL
;
640 /* if a device is listed, the BYPASS register must not be selected */
641 if (jtag_get_device(i
)->bypass
)
643 WARNING("scan data for a device in BYPASS");
651 int jtag_add_plain_dr_scan(int num_fields
, scan_field_t
*fields
, enum tap_state state
)
654 jtag_command_t
**last_cmd
= jtag_get_last_command_p();
658 WARNING("JTAG command queued, while TRST is low (TAP in reset)");
659 return ERROR_JTAG_TRST_ASSERTED
;
662 /* allocate memory for a new list member */
663 *last_cmd
= cmd_queue_alloc(sizeof(jtag_command_t
));
664 last_comand_pointer
= &((*last_cmd
)->next
);
665 (*last_cmd
)->next
= NULL
;
666 (*last_cmd
)->type
= JTAG_SCAN
;
668 /* allocate memory for scan command */
669 (*last_cmd
)->cmd
.scan
= cmd_queue_alloc(sizeof(scan_command_t
));
670 (*last_cmd
)->cmd
.scan
->ir_scan
= 0;
671 (*last_cmd
)->cmd
.scan
->num_fields
= num_fields
;
672 (*last_cmd
)->cmd
.scan
->fields
= cmd_queue_alloc(num_fields
* sizeof(scan_field_t
));
673 (*last_cmd
)->cmd
.scan
->end_state
= state
;
676 cmd_queue_end_state
= state
;
678 if (cmd_queue_cur_state
== TAP_TLR
&& cmd_queue_end_state
!= TAP_TLR
)
679 jtag_call_event_callbacks(JTAG_TRST_RELEASED
);
681 if (cmd_queue_end_state
== TAP_TLR
)
682 jtag_call_event_callbacks(JTAG_TRST_ASSERTED
);
684 cmd_queue_cur_state
= cmd_queue_end_state
;
686 for (i
= 0; i
< num_fields
; i
++)
688 int num_bits
= fields
[i
].num_bits
;
689 int num_bytes
= CEIL(fields
[i
].num_bits
, 8);
690 (*last_cmd
)->cmd
.scan
->fields
[i
].device
= fields
[i
].device
;
691 (*last_cmd
)->cmd
.scan
->fields
[i
].num_bits
= num_bits
;
692 (*last_cmd
)->cmd
.scan
->fields
[i
].out_value
= buf_cpy(fields
[i
].out_value
, cmd_queue_alloc(num_bytes
), num_bits
);
693 (*last_cmd
)->cmd
.scan
->fields
[i
].out_mask
= buf_cpy(fields
[i
].out_mask
, cmd_queue_alloc(num_bytes
), num_bits
);
694 (*last_cmd
)->cmd
.scan
->fields
[i
].in_value
= fields
[i
].in_value
;
695 (*last_cmd
)->cmd
.scan
->fields
[i
].in_check_value
= fields
[i
].in_check_value
;
696 (*last_cmd
)->cmd
.scan
->fields
[i
].in_check_mask
= fields
[i
].in_check_mask
;
697 (*last_cmd
)->cmd
.scan
->fields
[i
].in_handler
= fields
[i
].in_handler
;
698 (*last_cmd
)->cmd
.scan
->fields
[i
].in_handler_priv
= fields
[i
].in_handler_priv
;
703 int jtag_add_statemove(enum tap_state state
)
707 WARNING("JTAG command queued, while TRST is low (TAP in reset)");
708 return jtag_error
=ERROR_JTAG_TRST_ASSERTED
;
712 cmd_queue_end_state
= state
;
714 if (cmd_queue_cur_state
== TAP_TLR
&& cmd_queue_end_state
!= TAP_TLR
)
715 jtag_call_event_callbacks(JTAG_TRST_RELEASED
);
717 if (cmd_queue_end_state
== TAP_TLR
)
718 jtag_call_event_callbacks(JTAG_TRST_ASSERTED
);
720 cmd_queue_cur_state
= cmd_queue_end_state
;
722 return interface_jtag_add_statemove(state
);
725 int INTERFACE(interface_jtag_add_statemove
)(enum tap_state state
)
727 jtag_command_t
**last_cmd
= jtag_get_last_command_p();
729 /* allocate memory for a new list member */
730 *last_cmd
= cmd_queue_alloc(sizeof(jtag_command_t
));
731 last_comand_pointer
= &((*last_cmd
)->next
);
732 (*last_cmd
)->next
= NULL
;
733 (*last_cmd
)->type
= JTAG_STATEMOVE
;
735 (*last_cmd
)->cmd
.statemove
= cmd_queue_alloc(sizeof(statemove_command_t
));
736 (*last_cmd
)->cmd
.statemove
->end_state
= state
;
742 int jtag_add_pathmove(int num_states
, enum tap_state
*path
)
744 jtag_command_t
**last_cmd
= jtag_get_last_command_p();
749 WARNING("JTAG command queued, while TRST is low (TAP in reset)");
750 return ERROR_JTAG_TRST_ASSERTED
;
753 /* the last state has to be a stable state */
754 if (tap_move_map
[path
[num_states
- 1]] == -1)
756 ERROR("TAP path doesn't finish in a stable state");
757 return ERROR_JTAG_NOT_IMPLEMENTED
;
760 /* allocate memory for a new list member */
761 *last_cmd
= cmd_queue_alloc(sizeof(jtag_command_t
));
762 last_comand_pointer
= &((*last_cmd
)->next
);
763 (*last_cmd
)->next
= NULL
;
764 (*last_cmd
)->type
= JTAG_PATHMOVE
;
766 (*last_cmd
)->cmd
.pathmove
= cmd_queue_alloc(sizeof(pathmove_command_t
));
767 (*last_cmd
)->cmd
.pathmove
->num_states
= num_states
;
768 (*last_cmd
)->cmd
.pathmove
->path
= cmd_queue_alloc(sizeof(enum tap_state
) * num_states
);
770 for (i
= 0; i
< num_states
; i
++)
771 (*last_cmd
)->cmd
.pathmove
->path
[i
] = path
[i
];
773 if (cmd_queue_cur_state
== TAP_TLR
&& cmd_queue_end_state
!= TAP_TLR
)
774 jtag_call_event_callbacks(JTAG_TRST_RELEASED
);
776 if (cmd_queue_end_state
== TAP_TLR
)
777 jtag_call_event_callbacks(JTAG_TRST_ASSERTED
);
779 cmd_queue_cur_state
= path
[num_states
- 1];
784 int INTERFACE(interface_jtag_add_runtest
)(int num_cycles
, enum tap_state state
)
786 jtag_command_t
**last_cmd
= jtag_get_last_command_p();
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
;
801 int jtag_add_runtest(int num_cycles
, enum tap_state state
)
805 jtag_error
=ERROR_JTAG_QUEUE_FAILED
;
806 WARNING("JTAG command queued, while TRST is low (TAP in reset)");
807 return ERROR_JTAG_TRST_ASSERTED
;
811 cmd_queue_end_state
= state
;
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
= cmd_queue_end_state
;
821 /* executed by sw or hw fifo */
822 return interface_jtag_add_runtest(num_cycles
, state
);
825 int jtag_add_reset(int req_trst
, int req_srst
)
827 int trst_with_tms
= 0;
831 req_trst
= jtag_trst
;
834 req_srst
= jtag_srst
;
836 /* Make sure that jtag_reset_config allows the requested reset */
837 /* if SRST pulls TRST, we can't fulfill srst == 1 with trst == 0 */
838 if (((jtag_reset_config
& RESET_SRST_PULLS_TRST
) && (req_srst
== 1)) && (req_trst
== 0))
840 return jtag_error
=ERROR_JTAG_RESET_WOULD_ASSERT_TRST
;
843 /* if TRST pulls SRST, we reset with TAP T-L-R */
844 if (((jtag_reset_config
& RESET_TRST_PULLS_SRST
) && (req_trst
== 1)) && (req_srst
== 0))
850 if (req_srst
&& !(jtag_reset_config
& RESET_HAS_SRST
))
852 ERROR("requested nSRST assertion, but the current configuration doesn't support this");
853 return jtag_error
=ERROR_JTAG_RESET_CANT_SRST
;
856 if (req_trst
&& !(jtag_reset_config
& RESET_HAS_TRST
))
862 jtag_trst
= req_trst
;
863 jtag_srst
= req_srst
;
867 jtag_call_event_callbacks(JTAG_SRST_ASSERTED
);
871 jtag_call_event_callbacks(JTAG_SRST_RELEASED
);
872 if (jtag_nsrst_delay
)
873 jtag_add_sleep(jtag_nsrst_delay
* 1000);
878 jtag_call_event_callbacks(JTAG_TRST_ASSERTED
);
879 cmd_queue_cur_state
= TAP_TLR
;
880 cmd_queue_end_state
= TAP_TLR
;
888 /* we just asserted nTRST, so we're now in Test-Logic-Reset,
889 * and inform possible listeners about this
891 cmd_queue_cur_state
= TAP_TLR
;
892 jtag_call_event_callbacks(JTAG_TRST_ASSERTED
);
896 /* the nTRST line got deasserted, so we're still in Test-Logic-Reset,
897 * but we might want to add a delay to give the TAP time to settle
899 if (jtag_ntrst_delay
)
900 jtag_add_sleep(jtag_ntrst_delay
* 1000);
903 retval
= interface_jtag_add_reset(req_trst
, req_srst
);
904 if (retval
!=ERROR_OK
)
909 jtag_add_statemove(TAP_TLR
);
916 int INTERFACE(interface_jtag_add_reset
)(int req_trst
, int req_srst
)
918 jtag_command_t
**last_cmd
= jtag_get_last_command_p();
920 /* allocate memory for a new list member */
921 *last_cmd
= cmd_queue_alloc(sizeof(jtag_command_t
));
922 (*last_cmd
)->next
= NULL
;
923 last_comand_pointer
= &((*last_cmd
)->next
);
924 (*last_cmd
)->type
= JTAG_RESET
;
926 (*last_cmd
)->cmd
.reset
= cmd_queue_alloc(sizeof(reset_command_t
));
927 (*last_cmd
)->cmd
.reset
->trst
= req_trst
;
928 (*last_cmd
)->cmd
.reset
->srst
= req_srst
;
934 int jtag_add_end_state(enum tap_state state
)
936 jtag_command_t
**last_cmd
= jtag_get_last_command_p();
938 /* allocate memory for a new list member */
939 *last_cmd
= cmd_queue_alloc(sizeof(jtag_command_t
));
940 (*last_cmd
)->next
= NULL
;
941 last_comand_pointer
= &((*last_cmd
)->next
);
942 (*last_cmd
)->type
= JTAG_END_STATE
;
944 (*last_cmd
)->cmd
.end_state
= cmd_queue_alloc(sizeof(end_state_command_t
));
945 (*last_cmd
)->cmd
.end_state
->end_state
= state
;
948 cmd_queue_end_state
= state
;
953 int jtag_add_sleep(u32 us
)
955 jtag_command_t
**last_cmd
= jtag_get_last_command_p();
957 /* allocate memory for a new list member */
958 *last_cmd
= cmd_queue_alloc(sizeof(jtag_command_t
));
959 (*last_cmd
)->next
= NULL
;
960 last_comand_pointer
= &((*last_cmd
)->next
);
961 (*last_cmd
)->type
= JTAG_SLEEP
;
963 (*last_cmd
)->cmd
.sleep
= cmd_queue_alloc(sizeof(sleep_command_t
));
964 (*last_cmd
)->cmd
.sleep
->us
= us
;
969 int jtag_scan_size(scan_command_t
*cmd
)
974 /* count bits in scan command */
975 for (i
= 0; i
< cmd
->num_fields
; i
++)
977 bit_count
+= cmd
->fields
[i
].num_bits
;
983 int jtag_build_buffer(scan_command_t
*cmd
, u8
**buffer
)
988 bit_count
= jtag_scan_size(cmd
);
989 *buffer
= malloc(CEIL(bit_count
, 8));
993 for (i
= 0; i
< cmd
->num_fields
; i
++)
995 if (cmd
->fields
[i
].out_value
)
997 #ifdef _DEBUG_JTAG_IO_
998 char* char_buf
= buf_to_str(cmd
->fields
[i
].out_value
, (cmd
->fields
[i
].num_bits
> 64) ? 64 : cmd
->fields
[i
].num_bits
, 16);
1000 buf_set_buf(cmd
->fields
[i
].out_value
, 0, *buffer
, bit_count
, cmd
->fields
[i
].num_bits
);
1001 #ifdef _DEBUG_JTAG_IO_
1002 DEBUG("fields[%i].out_value: 0x%s", i
, char_buf
);
1007 bit_count
+= cmd
->fields
[i
].num_bits
;
1014 int jtag_read_buffer(u8
*buffer
, scan_command_t
*cmd
)
1020 /* we return ERROR_OK, unless a check fails, or a handler reports a problem */
1023 for (i
= 0; i
< cmd
->num_fields
; i
++)
1025 /* if neither in_value nor in_handler
1026 * are specified we don't have to examine this field
1028 if (cmd
->fields
[i
].in_value
|| cmd
->fields
[i
].in_handler
)
1030 int num_bits
= cmd
->fields
[i
].num_bits
;
1031 u8
*captured
= buf_set_buf(buffer
, bit_count
, malloc(CEIL(num_bits
, 8)), 0, num_bits
);
1033 #ifdef _DEBUG_JTAG_IO_
1036 char_buf
= buf_to_str(captured
, (num_bits
> 64) ? 64 : num_bits
, 16);
1037 DEBUG("fields[%i].in_value: 0x%s", i
, char_buf
);
1041 if (cmd
->fields
[i
].in_value
)
1043 buf_cpy(captured
, cmd
->fields
[i
].in_value
, num_bits
);
1045 if (cmd
->fields
[i
].in_handler
)
1047 if (cmd
->fields
[i
].in_handler(cmd
->fields
[i
].in_value
, cmd
->fields
[i
].in_handler_priv
, cmd
->fields
+i
) != ERROR_OK
)
1049 WARNING("in_handler reported a failed check");
1050 retval
= ERROR_JTAG_QUEUE_FAILED
;
1055 /* no in_value specified, but a handler takes care of the scanned data */
1056 if (cmd
->fields
[i
].in_handler
&& (!cmd
->fields
[i
].in_value
))
1058 if (cmd
->fields
[i
].in_handler(captured
, cmd
->fields
[i
].in_handler_priv
, cmd
->fields
+i
) != ERROR_OK
)
1060 /* We're going to call the error:handler later, but if the in_handler
1061 * reported an error we report this failure upstream
1063 WARNING("in_handler reported a failed check");
1064 retval
= ERROR_JTAG_QUEUE_FAILED
;
1070 bit_count
+= cmd
->fields
[i
].num_bits
;
1076 int jtag_check_value(u8
*captured
, void *priv
, scan_field_t
*field
)
1078 int retval
= ERROR_OK
;
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 /* An error handler could have caught the failing check
1091 * only report a problem when there wasn't a handler, or if the handler
1092 * acknowledged the error
1096 char *captured_char
= buf_to_str(captured
, (num_bits
> 64) ? 64 : num_bits
, 16);
1097 char *in_check_value_char
= buf_to_str(field
->in_check_value
, (num_bits
> 64) ? 64 : num_bits
, 16);
1099 if (field
->in_check_mask
)
1101 char *in_check_mask_char
;
1102 in_check_mask_char
= buf_to_str(field
->in_check_mask
, (num_bits
> 64) ? 64 : num_bits
, 16);
1103 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
);
1104 free(in_check_mask_char
);
1108 WARNING("value captured during scan didn't pass the requested check: captured: 0x%s check_value: 0x%s", captured_char
, in_check_value_char
);
1111 free(captured_char
);
1112 free(in_check_value_char
);
1114 retval
= ERROR_JTAG_QUEUE_FAILED
;
1122 set up checking of this field using the in_handler. The values passed in must be valid until
1123 after jtag_execute() has completed.
1125 void jtag_set_check_value(scan_field_t
*field
, u8
*value
, u8
*mask
, error_handler_t
*in_error_handler
)
1128 field
->in_handler
= jtag_check_value
;
1130 field
->in_handler
= NULL
; /* No check, e.g. embeddedice uses value==NULL to indicate no check */
1131 field
->in_handler_priv
= NULL
; /* this will be filled in at the invocation site to point to the field duplicate */
1132 field
->in_check_value
= value
;
1133 field
->in_check_mask
= mask
;
1136 enum scan_type
jtag_scan_type(scan_command_t
*cmd
)
1141 for (i
= 0; i
< cmd
->num_fields
; i
++)
1143 if (cmd
->fields
[i
].in_value
|| cmd
->fields
[i
].in_handler
)
1145 if (cmd
->fields
[i
].out_value
)
1152 int INTERFACE(interface_jtag_execute_queue
)(void)
1156 retval
= jtag
->execute_queue();
1160 jtag_command_queue
= NULL
;
1161 last_comand_pointer
= &jtag_command_queue
;
1163 jtag_error
=ERROR_OK
;
1168 int jtag_execute_queue(void)
1170 int retval
=interface_jtag_execute_queue();
1171 if (retval
!=ERROR_OK
)
1174 jtag_error
=ERROR_OK
;
1178 int jtag_reset_callback(enum jtag_event event
, void *priv
)
1180 jtag_device_t
*device
= priv
;
1184 if (event
== JTAG_TRST_ASSERTED
)
1186 buf_set_ones(device
->cur_instr
, device
->ir_length
);
1193 void jtag_sleep(u32 us
)
1198 /* Try to examine chain layout according to IEEE 1149.1 §12
1200 int jtag_examine_chain()
1202 jtag_device_t
*device
= jtag_devices
;
1204 u8 idcode_buffer
[JTAG_MAX_CHAIN_SIZE
* 4];
1207 int device_count
= 0;
1208 u8 zero_check
= 0x0;
1209 u8 one_check
= 0xff;
1212 field
.num_bits
= sizeof(idcode_buffer
) * 8;
1213 field
.out_value
= idcode_buffer
;
1214 field
.out_mask
= NULL
;
1215 field
.in_value
= idcode_buffer
;
1216 field
.in_check_value
= NULL
;
1217 field
.in_check_mask
= NULL
;
1218 field
.in_handler
= NULL
;
1219 field
.in_handler_priv
= NULL
;
1221 for (i
= 0; i
< JTAG_MAX_CHAIN_SIZE
; i
++)
1223 buf_set_u32(idcode_buffer
, i
* 32, 32, 0x000000FF);
1226 jtag_add_plain_dr_scan(1, &field
, TAP_TLR
);
1227 jtag_execute_queue();
1229 for (i
= 0; i
< JTAG_MAX_CHAIN_SIZE
* 4; i
++)
1231 zero_check
|= idcode_buffer
[i
];
1232 one_check
&= idcode_buffer
[i
];
1235 /* if there wasn't a single non-zero bit or if all bits were one, the scan isn't valid */
1236 if ((zero_check
== 0x00) || (one_check
== 0xff))
1238 ERROR("JTAG communication failure, check connection, JTAG interface, target power etc.");
1239 return ERROR_JTAG_INIT_FAILED
;
1242 for (bit_count
= 0; bit_count
< (JTAG_MAX_CHAIN_SIZE
* 32) - 31;)
1244 u32 idcode
= buf_get_u32(idcode_buffer
, bit_count
, 32);
1245 if ((idcode
& 1) == 0)
1247 /* LSB must not be 0, this indicates a device in bypass */
1258 if (idcode
== 0x000000FF)
1260 /* End of chain (invalid manufacturer ID) */
1266 device
->idcode
= idcode
;
1267 device
= device
->next
;
1271 manufacturer
= (idcode
& 0xffe) >> 1;
1272 part
= (idcode
& 0xffff000) >> 12;
1273 version
= (idcode
& 0xf0000000) >> 28;
1275 INFO("JTAG device found: 0x%8.8x (Manufacturer: 0x%3.3x, Part: 0x%4.4x, Version: 0x%1.1x)",
1276 idcode
, manufacturer
, part
, version
);
1282 /* see if number of discovered devices matches configuration */
1283 if (device_count
!= jtag_num_devices
)
1285 ERROR("number of discovered devices in JTAG chain (%i) doesn't match configuration (%i)",
1286 device_count
, jtag_num_devices
);
1287 ERROR("check the config file and ensure proper JTAG communication (connections, speed, ...)");
1288 return ERROR_JTAG_INIT_FAILED
;
1294 int jtag_validate_chain()
1296 jtag_device_t
*device
= jtag_devices
;
1297 int total_ir_length
= 0;
1304 total_ir_length
+= device
->ir_length
;
1305 device
= device
->next
;
1308 total_ir_length
+= 2;
1309 ir_test
= malloc(CEIL(total_ir_length
, 8));
1310 buf_set_ones(ir_test
, total_ir_length
);
1313 field
.num_bits
= total_ir_length
;
1314 field
.out_value
= ir_test
;
1315 field
.out_mask
= NULL
;
1316 field
.in_value
= ir_test
;
1317 field
.in_check_value
= NULL
;
1318 field
.in_check_mask
= NULL
;
1319 field
.in_handler
= NULL
;
1320 field
.in_handler_priv
= NULL
;
1322 jtag_add_plain_ir_scan(1, &field
, TAP_TLR
);
1323 jtag_execute_queue();
1325 device
= jtag_devices
;
1328 if (buf_get_u32(ir_test
, chain_pos
, 2) != 0x1)
1330 char *cbuf
= buf_to_str(ir_test
, total_ir_length
, 16);
1331 ERROR("Error validating JTAG scan chain, IR mismatch, scan returned 0x%s", cbuf
);
1334 return ERROR_JTAG_INIT_FAILED
;
1336 chain_pos
+= device
->ir_length
;
1337 device
= device
->next
;
1340 if (buf_get_u32(ir_test
, chain_pos
, 2) != 0x3)
1342 char *cbuf
= buf_to_str(ir_test
, total_ir_length
, 16);
1343 ERROR("Error validating JTAG scan chain, IR mismatch, scan returned 0x%s", cbuf
);
1346 return ERROR_JTAG_INIT_FAILED
;
1354 int jtag_register_commands(struct command_context_s
*cmd_ctx
)
1356 register_command(cmd_ctx
, NULL
, "interface", handle_interface_command
,
1357 COMMAND_CONFIG
, NULL
);
1358 register_command(cmd_ctx
, NULL
, "jtag_speed", handle_jtag_speed_command
,
1359 COMMAND_ANY
, "set jtag speed (if supported) <speed>");
1360 register_command(cmd_ctx
, NULL
, "jtag_device", handle_jtag_device_command
,
1361 COMMAND_CONFIG
, "jtag_device <ir_length> <ir_expected> <ir_mask>");
1362 register_command(cmd_ctx
, NULL
, "reset_config", handle_reset_config_command
,
1363 COMMAND_CONFIG
, NULL
);
1364 register_command(cmd_ctx
, NULL
, "jtag_nsrst_delay", handle_jtag_nsrst_delay_command
,
1365 COMMAND_CONFIG
, NULL
);
1366 register_command(cmd_ctx
, NULL
, "jtag_ntrst_delay", handle_jtag_ntrst_delay_command
,
1367 COMMAND_CONFIG
, NULL
);
1369 register_command(cmd_ctx
, NULL
, "scan_chain", handle_scan_chain_command
,
1370 COMMAND_EXEC
, "print current scan chain configuration");
1372 register_command(cmd_ctx
, NULL
, "endstate", handle_endstate_command
,
1373 COMMAND_EXEC
, "finish JTAG operations in <tap_state>");
1374 register_command(cmd_ctx
, NULL
, "jtag_reset", handle_jtag_reset_command
,
1375 COMMAND_EXEC
, "toggle reset lines <trst> <srst>");
1376 register_command(cmd_ctx
, NULL
, "runtest", handle_runtest_command
,
1377 COMMAND_EXEC
, "move to Run-Test/Idle, and execute <num_cycles>");
1378 register_command(cmd_ctx
, NULL
, "statemove", handle_statemove_command
,
1379 COMMAND_EXEC
, "move to current endstate or [tap_state]");
1380 register_command(cmd_ctx
, NULL
, "irscan", handle_irscan_command
,
1381 COMMAND_EXEC
, "execute IR scan <device> <instr> [dev2] [instr2] ...");
1382 register_command(cmd_ctx
, NULL
, "drscan", handle_drscan_command
,
1383 COMMAND_EXEC
, "execute DR scan <device> <var> [dev2] [var2] ...");
1385 register_command(cmd_ctx
, NULL
, "verify_ircapture", handle_verify_ircapture_command
,
1386 COMMAND_ANY
, "verify value captured during Capture-IR <enable|disable>");
1390 int jtag_interface_init(struct command_context_s
*cmd_ctx
)
1392 if (!jtag_interface
)
1394 /* nothing was previously specified by "interface" command */
1395 ERROR("JTAG interface has to be specified, see \"interface\" command");
1396 return ERROR_JTAG_INVALID_INTERFACE
;
1399 if (jtag_interface
->init() != ERROR_OK
)
1400 return ERROR_JTAG_INIT_FAILED
;
1402 jtag
= jtag_interface
;
1406 int jtag_init(struct command_context_s
*cmd_ctx
)
1408 int validate_tries
= 0;
1409 jtag_device_t
*device
;
1413 if (!jtag
&& jtag_interface_init(cmd_ctx
) != ERROR_OK
)
1414 return ERROR_JTAG_INIT_FAILED
;
1416 device
= jtag_devices
;
1417 jtag_ir_scan_size
= 0;
1418 jtag_num_devices
= 0;
1419 while (device
!= NULL
)
1421 jtag_ir_scan_size
+= device
->ir_length
;
1423 device
= device
->next
;
1426 jtag_add_statemove(TAP_TLR
);
1427 jtag_execute_queue();
1429 /* examine chain first, as this could discover the real chain layout */
1430 if (jtag_examine_chain() != ERROR_OK
)
1432 ERROR("trying to validate configured JTAG chain anyway...");
1435 while (jtag_validate_chain() != ERROR_OK
)
1438 if (validate_tries
> 5)
1440 ERROR("Could not validate JTAG chain, exit");
1442 return ERROR_JTAG_INVALID_INTERFACE
;
1450 int handle_interface_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
1454 /* check whether the interface is already configured */
1457 WARNING("Interface already configured, ignoring");
1461 /* interface name is a mandatory argument */
1462 if (argc
< 1 || args
[0][0] == '\0')
1464 return ERROR_COMMAND_SYNTAX_ERROR
;
1467 for (i
=0; jtag_interfaces
[i
]; i
++)
1469 if (strcmp(args
[0], jtag_interfaces
[i
]->name
) == 0)
1471 if (jtag_interfaces
[i
]->register_commands(cmd_ctx
) != ERROR_OK
)
1474 jtag_interface
= jtag_interfaces
[i
];
1479 /* no valid interface was found (i.e. the configuration option,
1480 * didn't match one of the compiled-in interfaces
1482 ERROR("No valid jtag interface found (%s)", args
[0]);
1483 ERROR("compiled-in jtag interfaces:");
1484 for (i
= 0; jtag_interfaces
[i
]; i
++)
1486 ERROR("%i: %s", i
, jtag_interfaces
[i
]->name
);
1489 return ERROR_JTAG_INVALID_INTERFACE
;
1492 int handle_jtag_device_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
1494 jtag_device_t
**last_device_p
= &jtag_devices
;
1498 while ((*last_device_p
)->next
)
1499 last_device_p
= &((*last_device_p
)->next
);
1500 last_device_p
= &((*last_device_p
)->next
);
1506 *last_device_p
= malloc(sizeof(jtag_device_t
));
1507 (*last_device_p
)->ir_length
= strtoul(args
[0], NULL
, 0);
1509 (*last_device_p
)->expected
= malloc((*last_device_p
)->ir_length
);
1510 buf_set_u32((*last_device_p
)->expected
, 0, (*last_device_p
)->ir_length
, strtoul(args
[1], NULL
, 0));
1511 (*last_device_p
)->expected_mask
= malloc((*last_device_p
)->ir_length
);
1512 buf_set_u32((*last_device_p
)->expected_mask
, 0, (*last_device_p
)->ir_length
, strtoul(args
[2], NULL
, 0));
1514 (*last_device_p
)->cur_instr
= malloc((*last_device_p
)->ir_length
);
1515 (*last_device_p
)->bypass
= 1;
1516 buf_set_ones((*last_device_p
)->cur_instr
, (*last_device_p
)->ir_length
);
1518 (*last_device_p
)->next
= NULL
;
1520 jtag_register_event_callback(jtag_reset_callback
, (*last_device_p
));
1527 int handle_scan_chain_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
1529 jtag_device_t
*device
= jtag_devices
;
1530 int device_count
= 0;
1534 u32 expected
, expected_mask
, cur_instr
;
1535 expected
= buf_get_u32(device
->expected
, 0, device
->ir_length
);
1536 expected_mask
= buf_get_u32(device
->expected_mask
, 0, device
->ir_length
);
1537 cur_instr
= buf_get_u32(device
->cur_instr
, 0, device
->ir_length
);
1538 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
);
1539 device
= device
->next
;
1546 int handle_reset_config_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
1550 if (strcmp(args
[0], "none") == 0)
1551 jtag_reset_config
= RESET_NONE
;
1552 else if (strcmp(args
[0], "trst_only") == 0)
1553 jtag_reset_config
= RESET_HAS_TRST
;
1554 else if (strcmp(args
[0], "srst_only") == 0)
1555 jtag_reset_config
= RESET_HAS_SRST
;
1556 else if (strcmp(args
[0], "trst_and_srst") == 0)
1557 jtag_reset_config
= RESET_TRST_AND_SRST
;
1560 ERROR("invalid reset_config argument, defaulting to none");
1561 jtag_reset_config
= RESET_NONE
;
1562 return ERROR_INVALID_ARGUMENTS
;
1568 if (strcmp(args
[1], "srst_pulls_trst") == 0)
1569 jtag_reset_config
|= RESET_SRST_PULLS_TRST
;
1570 else if (strcmp(args
[1], "trst_pulls_srst") == 0)
1571 jtag_reset_config
|= RESET_TRST_PULLS_SRST
;
1572 else if (strcmp(args
[1], "combined") == 0)
1573 jtag_reset_config
|= RESET_SRST_PULLS_TRST
| RESET_TRST_PULLS_SRST
;
1574 else if (strcmp(args
[1], "separate") == 0)
1575 jtag_reset_config
&= ~(RESET_SRST_PULLS_TRST
| RESET_TRST_PULLS_SRST
);
1578 ERROR("invalid reset_config argument, defaulting to none");
1579 jtag_reset_config
= RESET_NONE
;
1580 return ERROR_INVALID_ARGUMENTS
;
1586 if (strcmp(args
[2], "trst_open_drain") == 0)
1587 jtag_reset_config
|= RESET_TRST_OPEN_DRAIN
;
1588 else if (strcmp(args
[2], "trst_push_pull") == 0)
1589 jtag_reset_config
&= ~RESET_TRST_OPEN_DRAIN
;
1592 ERROR("invalid reset_config argument, defaulting to none");
1593 jtag_reset_config
= RESET_NONE
;
1594 return ERROR_INVALID_ARGUMENTS
;
1600 if (strcmp(args
[3], "srst_push_pull") == 0)
1601 jtag_reset_config
|= RESET_SRST_PUSH_PULL
;
1602 else if (strcmp(args
[3], "srst_open_drain") == 0)
1603 jtag_reset_config
&= ~RESET_SRST_PUSH_PULL
;
1606 ERROR("invalid reset_config argument, defaulting to none");
1607 jtag_reset_config
= RESET_NONE
;
1608 return ERROR_INVALID_ARGUMENTS
;
1615 int handle_jtag_nsrst_delay_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
1619 ERROR("jtag_nsrst_delay <ms> command takes one required argument");
1624 jtag_nsrst_delay
= strtoul(args
[0], NULL
, 0);
1630 int handle_jtag_ntrst_delay_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
1634 ERROR("jtag_ntrst_delay <ms> command takes one required argument");
1639 jtag_ntrst_delay
= strtoul(args
[0], NULL
, 0);
1645 int handle_jtag_speed_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
1648 command_print(cmd_ctx
, "jtag_speed: %i", jtag_speed
);
1652 /* this command can be called during CONFIG,
1653 * in which case jtag isn't initialized */
1655 jtag
->speed(strtoul(args
[0], NULL
, 0));
1657 jtag_speed
= strtoul(args
[0], NULL
, 0);
1663 int handle_endstate_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
1665 enum tap_state state
;
1669 return ERROR_COMMAND_SYNTAX_ERROR
;
1673 for (state
= 0; state
< 16; state
++)
1675 if (strcmp(args
[0], tap_state_strings
[state
]) == 0)
1677 jtag_add_end_state(state
);
1678 jtag_execute_queue();
1682 command_print(cmd_ctx
, "current endstate: %s", tap_state_strings
[end_state
]);
1687 int handle_jtag_reset_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
1695 return ERROR_COMMAND_SYNTAX_ERROR
;
1699 if (args
[0][0] == '1')
1701 else if (args
[0][0] == '0')
1705 return ERROR_COMMAND_SYNTAX_ERROR
;
1708 if (args
[1][0] == '1')
1710 else if (args
[1][0] == '0')
1714 return ERROR_COMMAND_SYNTAX_ERROR
;
1717 if (!jtag
&& jtag_interface_init(cmd_ctx
) != ERROR_OK
)
1718 return ERROR_JTAG_INIT_FAILED
;
1720 if ((retval
= jtag_add_reset(trst
, srst
)) != ERROR_OK
)
1724 case ERROR_JTAG_RESET_WOULD_ASSERT_TRST
:
1725 command_print(cmd_ctx
, "requested reset would assert trst\nif this is acceptable, use jtag_reset 1 %c", args
[1][0]);
1727 case ERROR_JTAG_RESET_CANT_SRST
:
1728 command_print(cmd_ctx
, "can't assert srst because the current reset_config doesn't support it");
1731 command_print(cmd_ctx
, "unknown error");
1734 jtag_execute_queue();
1739 int handle_runtest_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
1743 return ERROR_COMMAND_SYNTAX_ERROR
;
1746 jtag_add_runtest(strtol(args
[0], NULL
, 0), -1);
1747 jtag_execute_queue();
1753 int handle_statemove_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
1755 enum tap_state state
;
1760 for (state
= 0; state
< 16; state
++)
1762 if (strcmp(args
[0], tap_state_strings
[state
]) == 0)
1769 jtag_add_statemove(state
);
1770 jtag_execute_queue();
1776 int handle_irscan_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
1779 scan_field_t
*fields
;
1781 if ((argc
< 2) || (argc
% 2))
1783 return ERROR_COMMAND_SYNTAX_ERROR
;
1786 fields
= malloc(sizeof(scan_field_t
) * argc
/ 2);
1788 for (i
= 0; i
< argc
/ 2; i
++)
1790 int device
= strtoul(args
[i
*2], NULL
, 0);
1791 int field_size
= jtag_get_device(device
)->ir_length
;
1792 fields
[i
].device
= device
;
1793 fields
[i
].out_value
= malloc(CEIL(field_size
, 8));
1794 buf_set_u32(fields
[i
].out_value
, 0, field_size
, strtoul(args
[i
*2+1], NULL
, 0));
1795 fields
[i
].out_mask
= NULL
;
1796 fields
[i
].in_value
= NULL
;
1797 fields
[i
].in_check_mask
= NULL
;
1798 fields
[i
].in_handler
= NULL
;
1799 fields
[i
].in_handler_priv
= NULL
;
1802 jtag_add_ir_scan(argc
/ 2, fields
, -1);
1803 jtag_execute_queue();
1805 for (i
= 0; i
< argc
/ 2; i
++)
1806 free(fields
[i
].out_value
);
1813 int handle_drscan_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
1815 scan_field_t
*fields
;
1817 int field_count
= 0;
1821 if ((argc
< 2) || (argc
% 2))
1823 return ERROR_COMMAND_SYNTAX_ERROR
;
1826 for (i
= 0; i
< argc
; i
+=2)
1828 var
= get_var_by_namenum(args
[i
+1]);
1831 num_fields
+= var
->num_fields
;
1835 command_print(cmd_ctx
, "variable %s doesn't exist", args
[i
+1]);
1840 fields
= malloc(sizeof(scan_field_t
) * num_fields
);
1842 for (i
= 0; i
< argc
; i
+=2)
1844 var
= get_var_by_namenum(args
[i
+1]);
1846 for (j
= 0; j
< var
->num_fields
; j
++)
1848 fields
[field_count
].device
= strtol(args
[i
], NULL
, 0);
1849 fields
[field_count
].num_bits
= var
->fields
[j
].num_bits
;
1850 fields
[field_count
].out_value
= malloc(CEIL(var
->fields
[j
].num_bits
, 8));
1851 buf_set_u32(fields
[field_count
].out_value
, 0, var
->fields
[j
].num_bits
, var
->fields
[j
].value
);
1852 fields
[field_count
].out_mask
= NULL
;
1853 fields
[field_count
].in_value
= fields
[field_count
].out_value
;
1854 fields
[field_count
].in_check_mask
= NULL
;
1855 fields
[field_count
].in_check_value
= NULL
;
1856 fields
[field_count
].in_handler
= field_le_to_host
;
1857 fields
[field_count
++].in_handler_priv
= &(var
->fields
[j
]);
1861 jtag_add_dr_scan(num_fields
, fields
, -1);
1862 jtag_execute_queue();
1864 for (i
= 0; i
< argc
/ 2; i
++)
1865 free(fields
[i
].out_value
);
1872 int handle_verify_ircapture_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
1876 if (strcmp(args
[0], "enable") == 0)
1878 jtag_verify_capture_ir
= 1;
1880 else if (strcmp(args
[0], "disable") == 0)
1882 jtag_verify_capture_ir
= 0;
1885 return ERROR_COMMAND_SYNTAX_ERROR
;
1887 } else if (argc
!= 0)
1889 return ERROR_COMMAND_SYNTAX_ERROR
;
1892 command_print(cmd_ctx
, "verify Capture-IR is %s", (jtag_verify_capture_ir
) ? "enabled": "disabled");
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