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 /* note that this is not marked as static as it must be available from outside jtag.c for those
38 that implement the jtag_xxx() minidriver layer
40 int jtag_error
=ERROR_OK
;
43 char* tap_state_strings
[16] =
46 "sds", "cd", "sd", "e1d", "pd", "e2d", "ud",
48 "sis", "ci", "si", "e1i", "pi", "e2i", "ui"
51 typedef struct cmd_queue_page_s
55 struct cmd_queue_page_s
*next
;
58 #define CMD_QUEUE_PAGE_SIZE (1024 * 1024)
59 static cmd_queue_page_t
*cmd_queue_pages
= NULL
;
61 /* tap_move[i][j]: tap movement command to go from state i to state j
69 * SD->SD and SI->SI have to be caught in interface specific code
73 /* TLR RTI SD PD SI PI */
74 {0x7f, 0x00, 0x17, 0x0a, 0x1b, 0x16}, /* TLR */
75 {0x7f, 0x00, 0x25, 0x05, 0x2b, 0x0b}, /* RTI */
76 {0x7f, 0x31, 0x00, 0x01, 0x0f, 0x2f}, /* SD */
77 {0x7f, 0x30, 0x20, 0x17, 0x1e, 0x2f}, /* PD */
78 {0x7f, 0x31, 0x07, 0x17, 0x00, 0x01}, /* SI */
79 {0x7f, 0x30, 0x1c, 0x17, 0x20, 0x2f} /* PI */
82 int tap_move_map
[16] = {
83 0, -1, -1, 2, -1, 3, -1, -1,
84 1, -1, -1, 4, -1, 5, -1, -1
87 tap_transition_t tap_transitions
[16] =
89 {TAP_TLR
, TAP_RTI
}, /* TLR */
90 {TAP_SIS
, TAP_CD
}, /* SDS */
91 {TAP_E1D
, TAP_SD
}, /* CD */
92 {TAP_E1D
, TAP_SD
}, /* SD */
93 {TAP_UD
, TAP_PD
}, /* E1D */
94 {TAP_E2D
, TAP_PD
}, /* PD */
95 {TAP_UD
, TAP_SD
}, /* E2D */
96 {TAP_SDS
, TAP_RTI
}, /* UD */
97 {TAP_SDS
, TAP_RTI
}, /* RTI */
98 {TAP_TLR
, TAP_CI
}, /* SIS */
99 {TAP_E1I
, TAP_SI
}, /* CI */
100 {TAP_E1I
, TAP_SI
}, /* SI */
101 {TAP_UI
, TAP_PI
}, /* E1I */
102 {TAP_E2I
, TAP_PI
}, /* PI */
103 {TAP_UI
, TAP_SI
}, /* E2I */
104 {TAP_SDS
, TAP_RTI
} /* UI */
107 char* jtag_event_strings
[] =
109 "JTAG controller reset(tms or TRST)"
112 /* kludge!!!! these are just global variables that the
113 * interface use internally. They really belong
114 * inside the drivers, but we don't want to break
115 * linking the drivers!!!!
117 enum tap_state end_state
= TAP_TLR
;
118 enum tap_state cur_state
= TAP_TLR
;
122 jtag_command_t
*jtag_command_queue
= NULL
;
123 jtag_command_t
**last_comand_pointer
= &jtag_command_queue
;
124 jtag_device_t
*jtag_devices
= NULL
;
125 int jtag_num_devices
= 0;
126 int jtag_ir_scan_size
= 0;
127 enum reset_types jtag_reset_config
= RESET_NONE
;
128 enum tap_state cmd_queue_end_state
= TAP_TLR
;
129 enum tap_state cmd_queue_cur_state
= TAP_TLR
;
131 int jtag_verify_capture_ir
= 1;
133 /* how long the OpenOCD should wait before attempting JTAG communication after reset lines deasserted (in ms) */
134 int jtag_nsrst_delay
= 0; /* default to no nSRST delay */
135 int jtag_ntrst_delay
= 0; /* default to no nTRST delay */
137 /* maximum number of JTAG devices expected in the chain
139 #define JTAG_MAX_CHAIN_SIZE 20
141 /* callbacks to inform high-level handlers about JTAG state changes */
142 jtag_event_callback_t
*jtag_event_callbacks
;
145 static int speed1
= 0, speed2
= 0;
146 /* flag if the kHz speed was defined */
147 static int hasKHz
= 0;
149 /* jtag interfaces (parport, FTDI-USB, TI-USB, ...)
152 #if BUILD_ECOSBOARD == 1
153 extern jtag_interface_t eCosBoard_interface
;
156 #if BUILD_PARPORT == 1
157 extern jtag_interface_t parport_interface
;
161 extern jtag_interface_t dummy_interface
;
164 #if BUILD_FT2232_FTD2XX == 1
165 extern jtag_interface_t ft2232_interface
;
168 #if BUILD_FT2232_LIBFTDI == 1
169 extern jtag_interface_t ft2232_interface
;
172 #if BUILD_AMTJTAGACCEL == 1
173 extern jtag_interface_t amt_jtagaccel_interface
;
176 #if BUILD_EP93XX == 1
177 extern jtag_interface_t ep93xx_interface
;
180 #if BUILD_AT91RM9200 == 1
181 extern jtag_interface_t at91rm9200_interface
;
184 #if BUILD_GW16012 == 1
185 extern jtag_interface_t gw16012_interface
;
188 #if BUILD_PRESTO_LIBFTDI == 1 || BUILD_PRESTO_FTD2XX == 1
189 extern jtag_interface_t presto_interface
;
192 #if BUILD_USBPROG == 1
193 extern jtag_interface_t usbprog_interface
;
196 jtag_interface_t
*jtag_interfaces
[] = {
197 #if BUILD_ECOSBOARD == 1
198 &eCosBoard_interface
,
200 #if BUILD_PARPORT == 1
206 #if BUILD_FT2232_FTD2XX == 1
209 #if BUILD_FT2232_LIBFTDI == 1
212 #if BUILD_AMTJTAGACCEL == 1
213 &amt_jtagaccel_interface
,
215 #if BUILD_EP93XX == 1
218 #if BUILD_AT91RM9200 == 1
219 &at91rm9200_interface
,
221 #if BUILD_GW16012 == 1
224 #if BUILD_PRESTO_LIBFTDI == 1 || BUILD_PRESTO_FTD2XX == 1
227 #if BUILD_USBPROG == 1
233 jtag_interface_t
*jtag
= NULL
;
236 jtag_interface_t
*jtag_interface
= NULL
;
238 int jtag_speed_post_reset
= 0;
241 /* forward declarations */
242 void jtag_add_pathmove(int num_states
, enum tap_state
*path
);
243 void jtag_add_runtest(int num_cycles
, enum tap_state endstate
);
244 void jtag_add_end_state(enum tap_state endstate
);
245 void jtag_add_sleep(u32 us
);
246 int jtag_execute_queue(void);
247 int jtag_cancel_queue(void);
250 int handle_interface_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
);
251 int handle_jtag_speed_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
);
252 int handle_jtag_khz_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
);
253 int handle_jtag_device_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
);
254 int handle_reset_config_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
);
255 int handle_jtag_nsrst_delay_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
);
256 int handle_jtag_ntrst_delay_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
);
258 int handle_scan_chain_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
);
260 int handle_endstate_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
);
261 int handle_jtag_reset_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
);
262 int handle_runtest_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
);
263 int handle_irscan_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
);
264 int handle_drscan_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
);
266 int handle_verify_ircapture_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
);
268 int jtag_register_event_callback(int (*callback
)(enum jtag_event event
, void *priv
), void *priv
)
270 jtag_event_callback_t
**callbacks_p
= &jtag_event_callbacks
;
272 if (callback
== NULL
)
274 return ERROR_INVALID_ARGUMENTS
;
279 while ((*callbacks_p
)->next
)
280 callbacks_p
= &((*callbacks_p
)->next
);
281 callbacks_p
= &((*callbacks_p
)->next
);
284 (*callbacks_p
) = malloc(sizeof(jtag_event_callback_t
));
285 (*callbacks_p
)->callback
= callback
;
286 (*callbacks_p
)->priv
= priv
;
287 (*callbacks_p
)->next
= NULL
;
292 int jtag_unregister_event_callback(int (*callback
)(enum jtag_event event
, void *priv
))
294 jtag_event_callback_t
**callbacks_p
= &jtag_event_callbacks
;
296 if (callback
== NULL
)
298 return ERROR_INVALID_ARGUMENTS
;
303 jtag_event_callback_t
**next
= &((*callbacks_p
)->next
);
304 if ((*callbacks_p
)->callback
== callback
)
307 *callbacks_p
= *next
;
315 int jtag_call_event_callbacks(enum jtag_event event
)
317 jtag_event_callback_t
*callback
= jtag_event_callbacks
;
319 LOG_DEBUG("jtag event: %s", jtag_event_strings
[event
]);
323 callback
->callback(event
, callback
->priv
);
324 callback
= callback
->next
;
330 /* returns a pointer to the pointer of the last command in queue
331 * this may be a pointer to the root pointer (jtag_command_queue)
332 * or to the next member of the last but one command
334 jtag_command_t
** jtag_get_last_command_p(void)
336 /* jtag_command_t *cmd = jtag_command_queue;
342 return &jtag_command_queue;
346 return last_comand_pointer
;
349 /* returns a pointer to the n-th device in the scan chain */
350 jtag_device_t
* jtag_get_device(int num
)
352 jtag_device_t
*device
= jtag_devices
;
359 device
= device
->next
;
363 LOG_ERROR("jtag device number %d not defined", num
);
367 void* cmd_queue_alloc(size_t size
)
369 cmd_queue_page_t
**p_page
= &cmd_queue_pages
;
375 while ((*p_page
)->next
)
376 p_page
= &((*p_page
)->next
);
377 if (CMD_QUEUE_PAGE_SIZE
- (*p_page
)->used
< size
)
378 p_page
= &((*p_page
)->next
);
383 *p_page
= malloc(sizeof(cmd_queue_page_t
));
385 (*p_page
)->address
= malloc(CMD_QUEUE_PAGE_SIZE
);
386 (*p_page
)->next
= NULL
;
389 offset
= (*p_page
)->used
;
390 (*p_page
)->used
+= size
;
392 t
=(u8
*)((*p_page
)->address
);
396 void cmd_queue_free()
398 cmd_queue_page_t
*page
= cmd_queue_pages
;
402 cmd_queue_page_t
*last
= page
;
408 cmd_queue_pages
= NULL
;
411 static void jtag_prelude1()
415 LOG_WARNING("JTAG command queued, while TRST is low (TAP in reset)");
416 jtag_error
=ERROR_JTAG_TRST_ASSERTED
;
420 if (cmd_queue_end_state
== TAP_TLR
)
421 jtag_call_event_callbacks(JTAG_TRST_ASSERTED
);
424 static void jtag_prelude(enum tap_state state
)
429 jtag_add_end_state(state
);
431 cmd_queue_cur_state
= cmd_queue_end_state
;
434 void jtag_add_ir_scan(int num_fields
, scan_field_t
*fields
, enum tap_state state
)
440 retval
=interface_jtag_add_ir_scan(num_fields
, fields
, cmd_queue_end_state
);
441 if (retval
!=ERROR_OK
)
445 int MINIDRIVER(interface_jtag_add_ir_scan
)(int num_fields
, scan_field_t
*fields
, enum tap_state state
)
447 jtag_command_t
**last_cmd
;
448 jtag_device_t
*device
;
453 last_cmd
= jtag_get_last_command_p();
455 /* allocate memory for a new list member */
456 *last_cmd
= cmd_queue_alloc(sizeof(jtag_command_t
));
457 (*last_cmd
)->next
= NULL
;
458 last_comand_pointer
= &((*last_cmd
)->next
);
459 (*last_cmd
)->type
= JTAG_SCAN
;
461 /* allocate memory for ir scan command */
462 (*last_cmd
)->cmd
.scan
= cmd_queue_alloc(sizeof(scan_command_t
));
463 (*last_cmd
)->cmd
.scan
->ir_scan
= 1;
464 (*last_cmd
)->cmd
.scan
->num_fields
= jtag_num_devices
; /* one field per device */
465 (*last_cmd
)->cmd
.scan
->fields
= cmd_queue_alloc(jtag_num_devices
* sizeof(scan_field_t
));
466 (*last_cmd
)->cmd
.scan
->end_state
= state
;
468 for (i
= 0; i
< jtag_num_devices
; i
++)
471 device
= jtag_get_device(i
);
472 scan_size
= device
->ir_length
;
473 (*last_cmd
)->cmd
.scan
->fields
[i
].device
= i
;
474 (*last_cmd
)->cmd
.scan
->fields
[i
].num_bits
= scan_size
;
475 (*last_cmd
)->cmd
.scan
->fields
[i
].in_value
= NULL
;
476 (*last_cmd
)->cmd
.scan
->fields
[i
].in_handler
= NULL
; /* disable verification by default */
478 /* search the list */
479 for (j
= 0; j
< num_fields
; j
++)
481 if (i
== fields
[j
].device
)
484 (*last_cmd
)->cmd
.scan
->fields
[i
].out_value
= buf_cpy(fields
[j
].out_value
, cmd_queue_alloc(CEIL(scan_size
, 8)), scan_size
);
485 (*last_cmd
)->cmd
.scan
->fields
[i
].out_mask
= buf_cpy(fields
[j
].out_mask
, cmd_queue_alloc(CEIL(scan_size
, 8)), scan_size
);
487 if (jtag_verify_capture_ir
)
489 if (fields
[j
].in_handler
==NULL
)
491 jtag_set_check_value((*last_cmd
)->cmd
.scan
->fields
+i
, device
->expected
, device
->expected_mask
, NULL
);
494 (*last_cmd
)->cmd
.scan
->fields
[i
].in_handler
= fields
[j
].in_handler
;
495 (*last_cmd
)->cmd
.scan
->fields
[i
].in_handler_priv
= fields
[j
].in_handler_priv
;
496 (*last_cmd
)->cmd
.scan
->fields
[i
].in_check_value
= device
->expected
;
497 (*last_cmd
)->cmd
.scan
->fields
[i
].in_check_mask
= device
->expected_mask
;
508 /* if a device isn't listed, set it to BYPASS */
509 (*last_cmd
)->cmd
.scan
->fields
[i
].out_value
= buf_set_ones(cmd_queue_alloc(CEIL(scan_size
, 8)), scan_size
);
510 (*last_cmd
)->cmd
.scan
->fields
[i
].out_mask
= NULL
;
515 /* update device information */
516 buf_cpy((*last_cmd
)->cmd
.scan
->fields
[i
].out_value
, jtag_get_device(i
)->cur_instr
, scan_size
);
522 void jtag_add_plain_ir_scan(int num_fields
, scan_field_t
*fields
, enum tap_state state
)
528 retval
=interface_jtag_add_plain_ir_scan(num_fields
, fields
, cmd_queue_end_state
);
529 if (retval
!=ERROR_OK
)
533 int MINIDRIVER(interface_jtag_add_plain_ir_scan
)(int num_fields
, scan_field_t
*fields
, enum tap_state state
)
536 jtag_command_t
**last_cmd
;
538 last_cmd
= jtag_get_last_command_p();
540 /* allocate memory for a new list member */
541 *last_cmd
= cmd_queue_alloc(sizeof(jtag_command_t
));
542 (*last_cmd
)->next
= NULL
;
543 last_comand_pointer
= &((*last_cmd
)->next
);
544 (*last_cmd
)->type
= JTAG_SCAN
;
546 /* allocate memory for ir scan command */
547 (*last_cmd
)->cmd
.scan
= cmd_queue_alloc(sizeof(scan_command_t
));
548 (*last_cmd
)->cmd
.scan
->ir_scan
= 1;
549 (*last_cmd
)->cmd
.scan
->num_fields
= num_fields
;
550 (*last_cmd
)->cmd
.scan
->fields
= cmd_queue_alloc(num_fields
* sizeof(scan_field_t
));
551 (*last_cmd
)->cmd
.scan
->end_state
= state
;
553 for (i
= 0; i
< num_fields
; i
++)
555 int num_bits
= fields
[i
].num_bits
;
556 int num_bytes
= CEIL(fields
[i
].num_bits
, 8);
557 (*last_cmd
)->cmd
.scan
->fields
[i
].device
= fields
[i
].device
;
558 (*last_cmd
)->cmd
.scan
->fields
[i
].num_bits
= num_bits
;
559 (*last_cmd
)->cmd
.scan
->fields
[i
].out_value
= buf_cpy(fields
[i
].out_value
, cmd_queue_alloc(num_bytes
), num_bits
);
560 (*last_cmd
)->cmd
.scan
->fields
[i
].out_mask
= buf_cpy(fields
[i
].out_mask
, cmd_queue_alloc(num_bytes
), num_bits
);
561 (*last_cmd
)->cmd
.scan
->fields
[i
].in_value
= fields
[i
].in_value
;
562 (*last_cmd
)->cmd
.scan
->fields
[i
].in_check_value
= fields
[i
].in_check_value
;
563 (*last_cmd
)->cmd
.scan
->fields
[i
].in_check_mask
= fields
[i
].in_check_mask
;
564 (*last_cmd
)->cmd
.scan
->fields
[i
].in_handler
= NULL
;
565 (*last_cmd
)->cmd
.scan
->fields
[i
].in_handler_priv
= NULL
;
570 void jtag_add_dr_scan(int num_fields
, scan_field_t
*fields
, enum tap_state state
)
576 retval
=interface_jtag_add_dr_scan(num_fields
, fields
, cmd_queue_end_state
);
577 if (retval
!=ERROR_OK
)
581 int MINIDRIVER(interface_jtag_add_dr_scan
)(int num_fields
, scan_field_t
*fields
, enum tap_state state
)
584 int bypass_devices
= 0;
588 jtag_command_t
**last_cmd
= jtag_get_last_command_p();
589 jtag_device_t
*device
= jtag_devices
;
591 /* count devices in bypass */
596 device
= device
->next
;
599 /* allocate memory for a new list member */
600 *last_cmd
= cmd_queue_alloc(sizeof(jtag_command_t
));
601 last_comand_pointer
= &((*last_cmd
)->next
);
602 (*last_cmd
)->next
= NULL
;
603 (*last_cmd
)->type
= JTAG_SCAN
;
605 /* allocate memory for dr scan command */
606 (*last_cmd
)->cmd
.scan
= cmd_queue_alloc(sizeof(scan_command_t
));
607 (*last_cmd
)->cmd
.scan
->ir_scan
= 0;
608 (*last_cmd
)->cmd
.scan
->num_fields
= num_fields
+ bypass_devices
;
609 (*last_cmd
)->cmd
.scan
->fields
= cmd_queue_alloc((num_fields
+ bypass_devices
) * sizeof(scan_field_t
));
610 (*last_cmd
)->cmd
.scan
->end_state
= state
;
612 for (i
= 0; i
< jtag_num_devices
; i
++)
615 (*last_cmd
)->cmd
.scan
->fields
[field_count
].device
= i
;
617 for (j
= 0; j
< num_fields
; j
++)
619 if (i
== fields
[j
].device
)
622 scan_size
= fields
[j
].num_bits
;
623 (*last_cmd
)->cmd
.scan
->fields
[field_count
].num_bits
= scan_size
;
624 (*last_cmd
)->cmd
.scan
->fields
[field_count
].out_value
= buf_cpy(fields
[j
].out_value
, cmd_queue_alloc(CEIL(scan_size
, 8)), scan_size
);
625 (*last_cmd
)->cmd
.scan
->fields
[field_count
].out_mask
= buf_cpy(fields
[j
].out_mask
, cmd_queue_alloc(CEIL(scan_size
, 8)), scan_size
);
626 (*last_cmd
)->cmd
.scan
->fields
[field_count
].in_value
= fields
[j
].in_value
;
627 (*last_cmd
)->cmd
.scan
->fields
[field_count
].in_check_value
= fields
[j
].in_check_value
;
628 (*last_cmd
)->cmd
.scan
->fields
[field_count
].in_check_mask
= fields
[j
].in_check_mask
;
629 (*last_cmd
)->cmd
.scan
->fields
[field_count
].in_handler
= fields
[j
].in_handler
;
630 (*last_cmd
)->cmd
.scan
->fields
[field_count
++].in_handler_priv
= fields
[j
].in_handler_priv
;
635 #ifdef _DEBUG_JTAG_IO_
636 /* if a device isn't listed, the BYPASS register should be selected */
637 if (!jtag_get_device(i
)->bypass
)
639 LOG_ERROR("BUG: no scan data for a device not in BYPASS");
643 /* program the scan field to 1 bit length, and ignore it's value */
644 (*last_cmd
)->cmd
.scan
->fields
[field_count
].num_bits
= 1;
645 (*last_cmd
)->cmd
.scan
->fields
[field_count
].out_value
= NULL
;
646 (*last_cmd
)->cmd
.scan
->fields
[field_count
].out_mask
= NULL
;
647 (*last_cmd
)->cmd
.scan
->fields
[field_count
].in_value
= NULL
;
648 (*last_cmd
)->cmd
.scan
->fields
[field_count
].in_check_value
= NULL
;
649 (*last_cmd
)->cmd
.scan
->fields
[field_count
].in_check_mask
= NULL
;
650 (*last_cmd
)->cmd
.scan
->fields
[field_count
].in_handler
= NULL
;
651 (*last_cmd
)->cmd
.scan
->fields
[field_count
++].in_handler_priv
= NULL
;
655 #ifdef _DEBUG_JTAG_IO_
656 /* if a device is listed, the BYPASS register must not be selected */
657 if (jtag_get_device(i
)->bypass
)
659 LOG_ERROR("BUG: scan data for a device in BYPASS");
668 void MINIDRIVER(interface_jtag_add_dr_out
)(int device_num
,
672 enum tap_state end_state
)
677 int bypass_devices
= 0;
679 jtag_command_t
**last_cmd
= jtag_get_last_command_p();
680 jtag_device_t
*device
= jtag_devices
;
681 /* count devices in bypass */
686 device
= device
->next
;
689 /* allocate memory for a new list member */
690 *last_cmd
= cmd_queue_alloc(sizeof(jtag_command_t
));
691 last_comand_pointer
= &((*last_cmd
)->next
);
692 (*last_cmd
)->next
= NULL
;
693 (*last_cmd
)->type
= JTAG_SCAN
;
695 /* allocate memory for dr scan command */
696 (*last_cmd
)->cmd
.scan
= cmd_queue_alloc(sizeof(scan_command_t
));
697 (*last_cmd
)->cmd
.scan
->ir_scan
= 0;
698 (*last_cmd
)->cmd
.scan
->num_fields
= num_fields
+ bypass_devices
;
699 (*last_cmd
)->cmd
.scan
->fields
= cmd_queue_alloc((num_fields
+ bypass_devices
) * sizeof(scan_field_t
));
700 (*last_cmd
)->cmd
.scan
->end_state
= end_state
;
702 for (i
= 0; i
< jtag_num_devices
; i
++)
704 (*last_cmd
)->cmd
.scan
->fields
[field_count
].device
= i
;
709 #ifdef _DEBUG_JTAG_IO_
710 /* if a device is listed, the BYPASS register must not be selected */
711 if (jtag_get_device(i
)->bypass
)
713 LOG_ERROR("BUG: scan data for a device in BYPASS");
717 for (j
= 0; j
< num_fields
; j
++)
720 scan_size
= num_bits
[j
];
721 buf_set_u32(out_value
, 0, scan_size
, value
[j
]);
722 (*last_cmd
)->cmd
.scan
->fields
[field_count
].num_bits
= scan_size
;
723 (*last_cmd
)->cmd
.scan
->fields
[field_count
].out_value
= buf_cpy(out_value
, cmd_queue_alloc(CEIL(scan_size
, 8)), scan_size
);
724 (*last_cmd
)->cmd
.scan
->fields
[field_count
].out_mask
= NULL
;
725 (*last_cmd
)->cmd
.scan
->fields
[field_count
].in_value
= NULL
;
726 (*last_cmd
)->cmd
.scan
->fields
[field_count
].in_check_value
= NULL
;
727 (*last_cmd
)->cmd
.scan
->fields
[field_count
].in_check_mask
= NULL
;
728 (*last_cmd
)->cmd
.scan
->fields
[field_count
].in_handler
= NULL
;
729 (*last_cmd
)->cmd
.scan
->fields
[field_count
++].in_handler_priv
= NULL
;
733 #ifdef _DEBUG_JTAG_IO_
734 /* if a device isn't listed, the BYPASS register should be selected */
735 if (!jtag_get_device(i
)->bypass
)
737 LOG_ERROR("BUG: no scan data for a device not in BYPASS");
741 /* program the scan field to 1 bit length, and ignore it's value */
742 (*last_cmd
)->cmd
.scan
->fields
[field_count
].num_bits
= 1;
743 (*last_cmd
)->cmd
.scan
->fields
[field_count
].out_value
= NULL
;
744 (*last_cmd
)->cmd
.scan
->fields
[field_count
].out_mask
= NULL
;
745 (*last_cmd
)->cmd
.scan
->fields
[field_count
].in_value
= NULL
;
746 (*last_cmd
)->cmd
.scan
->fields
[field_count
].in_check_value
= NULL
;
747 (*last_cmd
)->cmd
.scan
->fields
[field_count
].in_check_mask
= NULL
;
748 (*last_cmd
)->cmd
.scan
->fields
[field_count
].in_handler
= NULL
;
749 (*last_cmd
)->cmd
.scan
->fields
[field_count
++].in_handler_priv
= NULL
;
757 void jtag_add_plain_dr_scan(int num_fields
, scan_field_t
*fields
, enum tap_state state
)
763 retval
=interface_jtag_add_plain_dr_scan(num_fields
, fields
, cmd_queue_end_state
);
764 if (retval
!=ERROR_OK
)
768 int MINIDRIVER(interface_jtag_add_plain_dr_scan
)(int num_fields
, scan_field_t
*fields
, enum tap_state state
)
771 jtag_command_t
**last_cmd
= jtag_get_last_command_p();
773 /* allocate memory for a new list member */
774 *last_cmd
= cmd_queue_alloc(sizeof(jtag_command_t
));
775 last_comand_pointer
= &((*last_cmd
)->next
);
776 (*last_cmd
)->next
= NULL
;
777 (*last_cmd
)->type
= JTAG_SCAN
;
779 /* allocate memory for scan command */
780 (*last_cmd
)->cmd
.scan
= cmd_queue_alloc(sizeof(scan_command_t
));
781 (*last_cmd
)->cmd
.scan
->ir_scan
= 0;
782 (*last_cmd
)->cmd
.scan
->num_fields
= num_fields
;
783 (*last_cmd
)->cmd
.scan
->fields
= cmd_queue_alloc(num_fields
* sizeof(scan_field_t
));
784 (*last_cmd
)->cmd
.scan
->end_state
= state
;
786 for (i
= 0; i
< num_fields
; i
++)
788 int num_bits
= fields
[i
].num_bits
;
789 int num_bytes
= CEIL(fields
[i
].num_bits
, 8);
790 (*last_cmd
)->cmd
.scan
->fields
[i
].device
= fields
[i
].device
;
791 (*last_cmd
)->cmd
.scan
->fields
[i
].num_bits
= num_bits
;
792 (*last_cmd
)->cmd
.scan
->fields
[i
].out_value
= buf_cpy(fields
[i
].out_value
, cmd_queue_alloc(num_bytes
), num_bits
);
793 (*last_cmd
)->cmd
.scan
->fields
[i
].out_mask
= buf_cpy(fields
[i
].out_mask
, cmd_queue_alloc(num_bytes
), num_bits
);
794 (*last_cmd
)->cmd
.scan
->fields
[i
].in_value
= fields
[i
].in_value
;
795 (*last_cmd
)->cmd
.scan
->fields
[i
].in_check_value
= fields
[i
].in_check_value
;
796 (*last_cmd
)->cmd
.scan
->fields
[i
].in_check_mask
= fields
[i
].in_check_mask
;
797 (*last_cmd
)->cmd
.scan
->fields
[i
].in_handler
= fields
[i
].in_handler
;
798 (*last_cmd
)->cmd
.scan
->fields
[i
].in_handler_priv
= fields
[i
].in_handler_priv
;
806 jtag_prelude(TAP_TLR
);
809 retval
=interface_jtag_add_tlr();
810 if (retval
!=ERROR_OK
)
814 int MINIDRIVER(interface_jtag_add_tlr
)()
816 enum tap_state state
= TAP_TLR
;
817 jtag_command_t
**last_cmd
= jtag_get_last_command_p();
819 /* allocate memory for a new list member */
820 *last_cmd
= cmd_queue_alloc(sizeof(jtag_command_t
));
821 last_comand_pointer
= &((*last_cmd
)->next
);
822 (*last_cmd
)->next
= NULL
;
823 (*last_cmd
)->type
= JTAG_STATEMOVE
;
825 (*last_cmd
)->cmd
.statemove
= cmd_queue_alloc(sizeof(statemove_command_t
));
826 (*last_cmd
)->cmd
.statemove
->end_state
= state
;
832 void jtag_add_pathmove(int num_states
, enum tap_state
*path
)
834 enum tap_state cur_state
=cmd_queue_cur_state
;
838 /* the last state has to be a stable state */
839 if (tap_move_map
[path
[num_states
- 1]] == -1)
841 LOG_ERROR("BUG: TAP path doesn't finish in a stable state");
845 for (i
=0; i
<num_states
; i
++)
847 if ((tap_transitions
[cur_state
].low
!= path
[i
])&&
848 (tap_transitions
[cur_state
].high
!= path
[i
]))
850 LOG_ERROR("BUG: %s -> %s isn't a valid TAP transition", tap_state_strings
[cur_state
], tap_state_strings
[path
[i
]]);
858 cmd_queue_cur_state
= path
[num_states
- 1];
860 retval
=interface_jtag_add_pathmove(num_states
, path
);
861 if (retval
!=ERROR_OK
)
866 int MINIDRIVER(interface_jtag_add_pathmove
)(int num_states
, enum tap_state
*path
)
868 jtag_command_t
**last_cmd
= jtag_get_last_command_p();
871 /* allocate memory for a new list member */
872 *last_cmd
= cmd_queue_alloc(sizeof(jtag_command_t
));
873 last_comand_pointer
= &((*last_cmd
)->next
);
874 (*last_cmd
)->next
= NULL
;
875 (*last_cmd
)->type
= JTAG_PATHMOVE
;
877 (*last_cmd
)->cmd
.pathmove
= cmd_queue_alloc(sizeof(pathmove_command_t
));
878 (*last_cmd
)->cmd
.pathmove
->num_states
= num_states
;
879 (*last_cmd
)->cmd
.pathmove
->path
= cmd_queue_alloc(sizeof(enum tap_state
) * num_states
);
881 for (i
= 0; i
< num_states
; i
++)
882 (*last_cmd
)->cmd
.pathmove
->path
[i
] = path
[i
];
887 int MINIDRIVER(interface_jtag_add_runtest
)(int num_cycles
, enum tap_state state
)
889 jtag_command_t
**last_cmd
= jtag_get_last_command_p();
891 /* allocate memory for a new list member */
892 *last_cmd
= cmd_queue_alloc(sizeof(jtag_command_t
));
893 (*last_cmd
)->next
= NULL
;
894 last_comand_pointer
= &((*last_cmd
)->next
);
895 (*last_cmd
)->type
= JTAG_RUNTEST
;
897 (*last_cmd
)->cmd
.runtest
= cmd_queue_alloc(sizeof(runtest_command_t
));
898 (*last_cmd
)->cmd
.runtest
->num_cycles
= num_cycles
;
899 (*last_cmd
)->cmd
.runtest
->end_state
= state
;
904 void jtag_add_runtest(int num_cycles
, enum tap_state state
)
910 /* executed by sw or hw fifo */
911 retval
=interface_jtag_add_runtest(num_cycles
, cmd_queue_end_state
);
912 if (retval
!=ERROR_OK
)
916 void jtag_add_reset(int req_tlr_or_trst
, int req_srst
)
918 int trst_with_tlr
= 0;
921 /* FIX!!! there are *many* different cases here. A better
922 * approach is needed for legal combinations of transitions...
924 if ((jtag_reset_config
& RESET_HAS_SRST
)&&
925 (jtag_reset_config
& RESET_HAS_TRST
)&&
926 ((jtag_reset_config
& RESET_SRST_PULLS_TRST
)==0)&&
927 ((jtag_reset_config
& RESET_TRST_PULLS_SRST
)==0))
929 if (((req_tlr_or_trst
&&!jtag_trst
)||
930 (!req_tlr_or_trst
&&jtag_trst
))&&
931 ((req_srst
&&!jtag_srst
)||
932 (!req_srst
&&jtag_srst
)))
934 LOG_ERROR("BUG: transition of req_tlr_or_trst and req_srst in the same jtag_add_reset() call is undefined");
938 /* Make sure that jtag_reset_config allows the requested reset */
939 /* if SRST pulls TRST, we can't fulfill srst == 1 with trst == 0 */
940 if (((jtag_reset_config
& RESET_SRST_PULLS_TRST
) && (req_srst
== 1)) && (!req_tlr_or_trst
))
942 LOG_ERROR("BUG: requested reset would assert trst");
943 jtag_error
=ERROR_FAIL
;
947 /* if TRST pulls SRST, we reset with TAP T-L-R */
948 if (((jtag_reset_config
& RESET_TRST_PULLS_SRST
) && (req_tlr_or_trst
)) && (req_srst
== 0))
953 if (req_srst
&& !(jtag_reset_config
& RESET_HAS_SRST
))
955 LOG_ERROR("BUG: requested SRST assertion, but the current configuration doesn't support this");
956 jtag_error
=ERROR_FAIL
;
962 if (!trst_with_tlr
&& (jtag_reset_config
& RESET_HAS_TRST
))
974 jtag_srst
= req_srst
;
976 retval
= interface_jtag_add_reset(jtag_trst
, jtag_srst
);
977 if (retval
!=ERROR_OK
)
985 LOG_DEBUG("SRST line asserted");
989 LOG_DEBUG("SRST line released");
990 if (jtag_nsrst_delay
)
991 jtag_add_sleep(jtag_nsrst_delay
* 1000);
996 LOG_DEBUG("JTAG reset with tms instead of TRST");
997 jtag_add_end_state(TAP_TLR
);
999 jtag_call_event_callbacks(JTAG_TRST_ASSERTED
);
1005 /* we just asserted nTRST, so we're now in Test-Logic-Reset,
1006 * and inform possible listeners about this
1008 LOG_DEBUG("TRST line asserted");
1009 cmd_queue_cur_state
= TAP_TLR
;
1010 jtag_call_event_callbacks(JTAG_TRST_ASSERTED
);
1014 if (jtag_ntrst_delay
)
1015 jtag_add_sleep(jtag_ntrst_delay
* 1000);
1019 int MINIDRIVER(interface_jtag_add_reset
)(int req_trst
, int req_srst
)
1021 jtag_command_t
**last_cmd
= jtag_get_last_command_p();
1023 /* allocate memory for a new list member */
1024 *last_cmd
= cmd_queue_alloc(sizeof(jtag_command_t
));
1025 (*last_cmd
)->next
= NULL
;
1026 last_comand_pointer
= &((*last_cmd
)->next
);
1027 (*last_cmd
)->type
= JTAG_RESET
;
1029 (*last_cmd
)->cmd
.reset
= cmd_queue_alloc(sizeof(reset_command_t
));
1030 (*last_cmd
)->cmd
.reset
->trst
= req_trst
;
1031 (*last_cmd
)->cmd
.reset
->srst
= req_srst
;
1037 void jtag_add_end_state(enum tap_state state
)
1039 cmd_queue_end_state
= state
;
1040 if ((cmd_queue_end_state
== TAP_SD
)||(cmd_queue_end_state
== TAP_SD
))
1042 LOG_ERROR("BUG: TAP_SD/SI can't be end state. Calling code should use a larger scan field");
1046 int MINIDRIVER(interface_jtag_add_sleep
)(u32 us
)
1048 jtag_command_t
**last_cmd
= jtag_get_last_command_p();
1050 /* allocate memory for a new list member */
1051 *last_cmd
= cmd_queue_alloc(sizeof(jtag_command_t
));
1052 (*last_cmd
)->next
= NULL
;
1053 last_comand_pointer
= &((*last_cmd
)->next
);
1054 (*last_cmd
)->type
= JTAG_SLEEP
;
1056 (*last_cmd
)->cmd
.sleep
= cmd_queue_alloc(sizeof(sleep_command_t
));
1057 (*last_cmd
)->cmd
.sleep
->us
= us
;
1062 void jtag_add_sleep(u32 us
)
1064 int retval
=interface_jtag_add_sleep(us
);
1065 if (retval
!=ERROR_OK
)
1070 int jtag_scan_size(scan_command_t
*cmd
)
1075 /* count bits in scan command */
1076 for (i
= 0; i
< cmd
->num_fields
; i
++)
1078 bit_count
+= cmd
->fields
[i
].num_bits
;
1084 int jtag_build_buffer(scan_command_t
*cmd
, u8
**buffer
)
1089 bit_count
= jtag_scan_size(cmd
);
1090 *buffer
= malloc(CEIL(bit_count
, 8));
1094 for (i
= 0; i
< cmd
->num_fields
; i
++)
1096 if (cmd
->fields
[i
].out_value
)
1098 #ifdef _DEBUG_JTAG_IO_
1099 char* char_buf
= buf_to_str(cmd
->fields
[i
].out_value
, (cmd
->fields
[i
].num_bits
> 64) ? 64 : cmd
->fields
[i
].num_bits
, 16);
1101 buf_set_buf(cmd
->fields
[i
].out_value
, 0, *buffer
, bit_count
, cmd
->fields
[i
].num_bits
);
1102 #ifdef _DEBUG_JTAG_IO_
1103 LOG_DEBUG("fields[%i].out_value: 0x%s", i
, char_buf
);
1108 bit_count
+= cmd
->fields
[i
].num_bits
;
1115 int jtag_read_buffer(u8
*buffer
, scan_command_t
*cmd
)
1121 /* we return ERROR_OK, unless a check fails, or a handler reports a problem */
1124 for (i
= 0; i
< cmd
->num_fields
; i
++)
1126 /* if neither in_value nor in_handler
1127 * are specified we don't have to examine this field
1129 if (cmd
->fields
[i
].in_value
|| cmd
->fields
[i
].in_handler
)
1131 int num_bits
= cmd
->fields
[i
].num_bits
;
1132 u8
*captured
= buf_set_buf(buffer
, bit_count
, malloc(CEIL(num_bits
, 8)), 0, num_bits
);
1134 #ifdef _DEBUG_JTAG_IO_
1137 char_buf
= buf_to_str(captured
, (num_bits
> 64) ? 64 : num_bits
, 16);
1138 LOG_DEBUG("fields[%i].in_value: 0x%s", i
, char_buf
);
1142 if (cmd
->fields
[i
].in_value
)
1144 buf_cpy(captured
, cmd
->fields
[i
].in_value
, num_bits
);
1146 if (cmd
->fields
[i
].in_handler
)
1148 if (cmd
->fields
[i
].in_handler(cmd
->fields
[i
].in_value
, cmd
->fields
[i
].in_handler_priv
, cmd
->fields
+i
) != ERROR_OK
)
1150 LOG_WARNING("in_handler reported a failed check");
1151 retval
= ERROR_JTAG_QUEUE_FAILED
;
1156 /* no in_value specified, but a handler takes care of the scanned data */
1157 if (cmd
->fields
[i
].in_handler
&& (!cmd
->fields
[i
].in_value
))
1159 if (cmd
->fields
[i
].in_handler(captured
, cmd
->fields
[i
].in_handler_priv
, cmd
->fields
+i
) != ERROR_OK
)
1161 /* We're going to call the error:handler later, but if the in_handler
1162 * reported an error we report this failure upstream
1164 LOG_WARNING("in_handler reported a failed check");
1165 retval
= ERROR_JTAG_QUEUE_FAILED
;
1171 bit_count
+= cmd
->fields
[i
].num_bits
;
1177 int jtag_check_value(u8
*captured
, void *priv
, scan_field_t
*field
)
1179 int retval
= ERROR_OK
;
1180 int num_bits
= field
->num_bits
;
1182 int compare_failed
= 0;
1184 if (field
->in_check_mask
)
1185 compare_failed
= buf_cmp_mask(captured
, field
->in_check_value
, field
->in_check_mask
, num_bits
);
1187 compare_failed
= buf_cmp(captured
, field
->in_check_value
, num_bits
);
1191 /* An error handler could have caught the failing check
1192 * only report a problem when there wasn't a handler, or if the handler
1193 * acknowledged the error
1197 char *captured_char
= buf_to_str(captured
, (num_bits
> 64) ? 64 : num_bits
, 16);
1198 char *in_check_value_char
= buf_to_str(field
->in_check_value
, (num_bits
> 64) ? 64 : num_bits
, 16);
1200 if (field
->in_check_mask
)
1202 char *in_check_mask_char
;
1203 in_check_mask_char
= buf_to_str(field
->in_check_mask
, (num_bits
> 64) ? 64 : num_bits
, 16);
1204 LOG_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
);
1205 free(in_check_mask_char
);
1209 LOG_WARNING("value captured during scan didn't pass the requested check: captured: 0x%s check_value: 0x%s", captured_char
, in_check_value_char
);
1212 free(captured_char
);
1213 free(in_check_value_char
);
1215 retval
= ERROR_JTAG_QUEUE_FAILED
;
1223 set up checking of this field using the in_handler. The values passed in must be valid until
1224 after jtag_execute() has completed.
1226 void jtag_set_check_value(scan_field_t
*field
, u8
*value
, u8
*mask
, error_handler_t
*in_error_handler
)
1229 field
->in_handler
= jtag_check_value
;
1231 field
->in_handler
= NULL
; /* No check, e.g. embeddedice uses value==NULL to indicate no check */
1232 field
->in_handler_priv
= NULL
; /* this will be filled in at the invocation site to point to the field duplicate */
1233 field
->in_check_value
= value
;
1234 field
->in_check_mask
= mask
;
1237 enum scan_type
jtag_scan_type(scan_command_t
*cmd
)
1242 for (i
= 0; i
< cmd
->num_fields
; i
++)
1244 if (cmd
->fields
[i
].in_value
|| cmd
->fields
[i
].in_handler
)
1246 if (cmd
->fields
[i
].out_value
)
1253 int MINIDRIVER(interface_jtag_execute_queue
)(void)
1257 retval
= jtag
->execute_queue();
1261 jtag_command_queue
= NULL
;
1262 last_comand_pointer
= &jtag_command_queue
;
1267 int jtag_execute_queue(void)
1269 int retval
=interface_jtag_execute_queue();
1270 if (retval
==ERROR_OK
)
1274 jtag_error
=ERROR_OK
;
1278 int jtag_reset_callback(enum jtag_event event
, void *priv
)
1280 jtag_device_t
*device
= priv
;
1284 if (event
== JTAG_TRST_ASSERTED
)
1286 buf_set_ones(device
->cur_instr
, device
->ir_length
);
1293 void jtag_sleep(u32 us
)
1298 /* Try to examine chain layout according to IEEE 1149.1 §12
1300 int jtag_examine_chain()
1302 jtag_device_t
*device
= jtag_devices
;
1304 u8 idcode_buffer
[JTAG_MAX_CHAIN_SIZE
* 4];
1307 int device_count
= 0;
1308 u8 zero_check
= 0x0;
1309 u8 one_check
= 0xff;
1312 field
.num_bits
= sizeof(idcode_buffer
) * 8;
1313 field
.out_value
= idcode_buffer
;
1314 field
.out_mask
= NULL
;
1315 field
.in_value
= idcode_buffer
;
1316 field
.in_check_value
= NULL
;
1317 field
.in_check_mask
= NULL
;
1318 field
.in_handler
= NULL
;
1319 field
.in_handler_priv
= NULL
;
1321 for (i
= 0; i
< JTAG_MAX_CHAIN_SIZE
; i
++)
1323 buf_set_u32(idcode_buffer
, i
* 32, 32, 0x000000FF);
1326 jtag_add_plain_dr_scan(1, &field
, TAP_TLR
);
1327 jtag_execute_queue();
1329 for (i
= 0; i
< JTAG_MAX_CHAIN_SIZE
* 4; i
++)
1331 zero_check
|= idcode_buffer
[i
];
1332 one_check
&= idcode_buffer
[i
];
1335 /* if there wasn't a single non-zero bit or if all bits were one, the scan isn't valid */
1336 if ((zero_check
== 0x00) || (one_check
== 0xff))
1338 LOG_ERROR("JTAG communication failure, check connection, JTAG interface, target power etc.");
1339 return ERROR_JTAG_INIT_FAILED
;
1342 for (bit_count
= 0; bit_count
< (JTAG_MAX_CHAIN_SIZE
* 32) - 31;)
1344 u32 idcode
= buf_get_u32(idcode_buffer
, bit_count
, 32);
1345 if ((idcode
& 1) == 0)
1347 /* LSB must not be 0, this indicates a device in bypass */
1358 if (idcode
== 0x000000FF)
1360 /* End of chain (invalid manufacturer ID) */
1366 device
->idcode
= idcode
;
1367 device
= device
->next
;
1371 manufacturer
= (idcode
& 0xffe) >> 1;
1372 part
= (idcode
& 0xffff000) >> 12;
1373 version
= (idcode
& 0xf0000000) >> 28;
1375 LOG_INFO("JTAG device found: 0x%8.8x (Manufacturer: 0x%3.3x, Part: 0x%4.4x, Version: 0x%1.1x)",
1376 idcode
, manufacturer
, part
, version
);
1382 /* see if number of discovered devices matches configuration */
1383 if (device_count
!= jtag_num_devices
)
1385 LOG_ERROR("number of discovered devices in JTAG chain (%i) doesn't match configuration (%i)",
1386 device_count
, jtag_num_devices
);
1387 LOG_ERROR("check the config file and ensure proper JTAG communication (connections, speed, ...)");
1388 return ERROR_JTAG_INIT_FAILED
;
1394 int jtag_validate_chain()
1396 jtag_device_t
*device
= jtag_devices
;
1397 int total_ir_length
= 0;
1404 total_ir_length
+= device
->ir_length
;
1405 device
= device
->next
;
1408 total_ir_length
+= 2;
1409 ir_test
= malloc(CEIL(total_ir_length
, 8));
1410 buf_set_ones(ir_test
, total_ir_length
);
1413 field
.num_bits
= total_ir_length
;
1414 field
.out_value
= ir_test
;
1415 field
.out_mask
= NULL
;
1416 field
.in_value
= ir_test
;
1417 field
.in_check_value
= NULL
;
1418 field
.in_check_mask
= NULL
;
1419 field
.in_handler
= NULL
;
1420 field
.in_handler_priv
= NULL
;
1422 jtag_add_plain_ir_scan(1, &field
, TAP_TLR
);
1423 jtag_execute_queue();
1425 device
= jtag_devices
;
1428 if (buf_get_u32(ir_test
, chain_pos
, 2) != 0x1)
1430 char *cbuf
= buf_to_str(ir_test
, total_ir_length
, 16);
1431 LOG_ERROR("Error validating JTAG scan chain, IR mismatch, scan returned 0x%s", cbuf
);
1434 return ERROR_JTAG_INIT_FAILED
;
1436 chain_pos
+= device
->ir_length
;
1437 device
= device
->next
;
1440 if (buf_get_u32(ir_test
, chain_pos
, 2) != 0x3)
1442 char *cbuf
= buf_to_str(ir_test
, total_ir_length
, 16);
1443 LOG_ERROR("Error validating JTAG scan chain, IR mismatch, scan returned 0x%s", cbuf
);
1446 return ERROR_JTAG_INIT_FAILED
;
1454 int jtag_register_commands(struct command_context_s
*cmd_ctx
)
1456 register_command(cmd_ctx
, NULL
, "interface", handle_interface_command
,
1457 COMMAND_CONFIG
, NULL
);
1458 register_command(cmd_ctx
, NULL
, "jtag_speed", handle_jtag_speed_command
,
1459 COMMAND_ANY
, "set jtag speed (if supported) <reset speed> [<post reset speed, default value is reset speed>]");
1460 register_command(cmd_ctx
, NULL
, "jtag_khz", handle_jtag_khz_command
,
1461 COMMAND_ANY
, "same as jtag_speed, except it takes maximum khz as arguments. 0 KHz = RTCK.");
1462 register_command(cmd_ctx
, NULL
, "jtag_device", handle_jtag_device_command
,
1463 COMMAND_CONFIG
, "jtag_device <ir_length> <ir_expected> <ir_mask>");
1464 register_command(cmd_ctx
, NULL
, "reset_config", handle_reset_config_command
,
1465 COMMAND_CONFIG
, NULL
);
1466 register_command(cmd_ctx
, NULL
, "jtag_nsrst_delay", handle_jtag_nsrst_delay_command
,
1467 COMMAND_ANY
, "jtag_nsrst_delay <ms> - delay after deasserting srst in ms");
1468 register_command(cmd_ctx
, NULL
, "jtag_ntrst_delay", handle_jtag_ntrst_delay_command
,
1469 COMMAND_ANY
, "jtag_ntrst_delay <ms> - delay after deasserting trst in ms");
1471 register_command(cmd_ctx
, NULL
, "scan_chain", handle_scan_chain_command
,
1472 COMMAND_EXEC
, "print current scan chain configuration");
1474 register_command(cmd_ctx
, NULL
, "endstate", handle_endstate_command
,
1475 COMMAND_EXEC
, "finish JTAG operations in <tap_state>");
1476 register_command(cmd_ctx
, NULL
, "jtag_reset", handle_jtag_reset_command
,
1477 COMMAND_EXEC
, "toggle reset lines <trst> <srst>");
1478 register_command(cmd_ctx
, NULL
, "runtest", handle_runtest_command
,
1479 COMMAND_EXEC
, "move to Run-Test/Idle, and execute <num_cycles>");
1480 register_command(cmd_ctx
, NULL
, "irscan", handle_irscan_command
,
1481 COMMAND_EXEC
, "execute IR scan <device> <instr> [dev2] [instr2] ...");
1482 register_command(cmd_ctx
, NULL
, "drscan", handle_drscan_command
,
1483 COMMAND_EXEC
, "execute DR scan <device> <var> [dev2] [var2] ...");
1485 register_command(cmd_ctx
, NULL
, "verify_ircapture", handle_verify_ircapture_command
,
1486 COMMAND_ANY
, "verify value captured during Capture-IR <enable|disable>");
1490 int jtag_interface_init(struct command_context_s
*cmd_ctx
)
1495 if (!jtag_interface
)
1497 /* nothing was previously specified by "interface" command */
1498 LOG_ERROR("JTAG interface has to be specified, see \"interface\" command");
1499 return ERROR_JTAG_INVALID_INTERFACE
;
1503 /*stay on "reset speed"*/
1504 if (jtag_interface
->khz(speed1
, &speed1
) == ERROR_OK
)
1505 jtag_speed
= speed1
;
1506 if (jtag_interface
->khz(speed2
, &speed2
) == ERROR_OK
)
1507 jtag_speed_post_reset
= speed2
;
1511 if (jtag_interface
->init() != ERROR_OK
)
1512 return ERROR_JTAG_INIT_FAILED
;
1516 jtag
= jtag_interface
;
1520 static int jtag_init_inner(struct command_context_s
*cmd_ctx
)
1522 int validate_tries
= 0;
1523 jtag_device_t
*device
;
1528 device
= jtag_devices
;
1529 jtag_ir_scan_size
= 0;
1530 jtag_num_devices
= 0;
1531 while (device
!= NULL
)
1533 jtag_ir_scan_size
+= device
->ir_length
;
1535 device
= device
->next
;
1539 if ((retval
=jtag_execute_queue())==ERROR_OK
)
1542 /* examine chain first, as this could discover the real chain layout */
1543 if (jtag_examine_chain() != ERROR_OK
)
1545 LOG_ERROR("trying to validate configured JTAG chain anyway...");
1548 while (jtag_validate_chain() != ERROR_OK
)
1552 if (validate_tries
> 5)
1554 LOG_ERROR("Could not validate JTAG chain, exit");
1555 return ERROR_JTAG_INVALID_INTERFACE
;
1563 int jtag_init_reset(struct command_context_s
*cmd_ctx
)
1567 if ((retval
=jtag_interface_init(cmd_ctx
)) != ERROR_OK
)
1570 LOG_DEBUG("Trying to bring the JTAG controller to life by asserting TRST / tms");
1572 /* Reset can happen after a power cycle.
1574 * Ideally we would only assert TRST or run tms before the target reset.
1576 * However w/srst_pulls_trst, trst is asserted together with the target
1577 * reset whether we want it or not.
1579 * NB! Some targets have JTAG circuitry disabled until a
1580 * trst & srst has been asserted.
1582 * NB! here we assume nsrst/ntrst delay are sufficient!
1584 * NB! order matters!!!! srst *can* disconnect JTAG circuitry
1587 jtag_add_reset(1, 0); /* TMS or TRST */
1588 if (jtag_reset_config
& RESET_HAS_SRST
)
1590 jtag_add_reset(1, 1);
1591 if ((jtag_reset_config
& RESET_SRST_PULLS_TRST
)==0)
1592 jtag_add_reset(0, 1);
1594 jtag_add_reset(0, 0);
1595 if ((retval
= jtag_execute_queue()) != ERROR_OK
)
1598 /* Check that we can communication on the JTAG chain + eventually we want to
1599 * be able to perform enumeration only after OpenOCD has started
1600 * telnet and GDB server
1602 * That would allow users to more easily perform any magic they need to before
1605 return jtag_init_inner(cmd_ctx
);
1608 int jtag_init(struct command_context_s
*cmd_ctx
)
1611 if ((retval
=jtag_interface_init(cmd_ctx
)) != ERROR_OK
)
1613 if (jtag_init_inner(cmd_ctx
)==ERROR_OK
)
1617 return jtag_init_reset(cmd_ctx
);
1621 static int default_khz(int khz
, int *jtag_speed
)
1623 LOG_ERROR("Translation from khz to jtag_speed not implemented");
1627 int handle_interface_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
1631 /* check whether the interface is already configured */
1634 LOG_WARNING("Interface already configured, ignoring");
1638 /* interface name is a mandatory argument */
1639 if (argc
< 1 || args
[0][0] == '\0')
1641 return ERROR_COMMAND_SYNTAX_ERROR
;
1644 for (i
=0; jtag_interfaces
[i
]; i
++)
1646 if (strcmp(args
[0], jtag_interfaces
[i
]->name
) == 0)
1648 if (jtag_interfaces
[i
]->register_commands(cmd_ctx
) != ERROR_OK
)
1651 jtag_interface
= jtag_interfaces
[i
];
1653 if (jtag_interface
->khz
== NULL
)
1655 jtag_interface
->khz
= default_khz
;
1661 /* no valid interface was found (i.e. the configuration option,
1662 * didn't match one of the compiled-in interfaces
1664 LOG_ERROR("No valid jtag interface found (%s)", args
[0]);
1665 LOG_ERROR("compiled-in jtag interfaces:");
1666 for (i
= 0; jtag_interfaces
[i
]; i
++)
1668 LOG_ERROR("%i: %s", i
, jtag_interfaces
[i
]->name
);
1671 return ERROR_JTAG_INVALID_INTERFACE
;
1674 int handle_jtag_device_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
1676 jtag_device_t
**last_device_p
= &jtag_devices
;
1680 while ((*last_device_p
)->next
)
1681 last_device_p
= &((*last_device_p
)->next
);
1682 last_device_p
= &((*last_device_p
)->next
);
1688 *last_device_p
= malloc(sizeof(jtag_device_t
));
1689 (*last_device_p
)->ir_length
= strtoul(args
[0], NULL
, 0);
1691 (*last_device_p
)->expected
= malloc((*last_device_p
)->ir_length
);
1692 buf_set_u32((*last_device_p
)->expected
, 0, (*last_device_p
)->ir_length
, strtoul(args
[1], NULL
, 0));
1693 (*last_device_p
)->expected_mask
= malloc((*last_device_p
)->ir_length
);
1694 buf_set_u32((*last_device_p
)->expected_mask
, 0, (*last_device_p
)->ir_length
, strtoul(args
[2], NULL
, 0));
1696 (*last_device_p
)->cur_instr
= malloc((*last_device_p
)->ir_length
);
1697 (*last_device_p
)->bypass
= 1;
1698 buf_set_ones((*last_device_p
)->cur_instr
, (*last_device_p
)->ir_length
);
1700 (*last_device_p
)->next
= NULL
;
1702 jtag_register_event_callback(jtag_reset_callback
, (*last_device_p
));
1709 int handle_scan_chain_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
1711 jtag_device_t
*device
= jtag_devices
;
1712 int device_count
= 0;
1716 u32 expected
, expected_mask
, cur_instr
;
1717 expected
= buf_get_u32(device
->expected
, 0, device
->ir_length
);
1718 expected_mask
= buf_get_u32(device
->expected_mask
, 0, device
->ir_length
);
1719 cur_instr
= buf_get_u32(device
->cur_instr
, 0, device
->ir_length
);
1720 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
);
1721 device
= device
->next
;
1728 int handle_reset_config_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
1731 return ERROR_COMMAND_SYNTAX_ERROR
;
1735 if (strcmp(args
[0], "none") == 0)
1736 jtag_reset_config
= RESET_NONE
;
1737 else if (strcmp(args
[0], "trst_only") == 0)
1738 jtag_reset_config
= RESET_HAS_TRST
;
1739 else if (strcmp(args
[0], "srst_only") == 0)
1740 jtag_reset_config
= RESET_HAS_SRST
;
1741 else if (strcmp(args
[0], "trst_and_srst") == 0)
1742 jtag_reset_config
= RESET_TRST_AND_SRST
;
1745 LOG_ERROR("invalid reset_config argument, defaulting to none");
1746 jtag_reset_config
= RESET_NONE
;
1747 return ERROR_INVALID_ARGUMENTS
;
1753 if (strcmp(args
[1], "separate") == 0)
1755 /* seperate reset lines - default */
1758 if (strcmp(args
[1], "srst_pulls_trst") == 0)
1759 jtag_reset_config
|= RESET_SRST_PULLS_TRST
;
1760 else if (strcmp(args
[1], "trst_pulls_srst") == 0)
1761 jtag_reset_config
|= RESET_TRST_PULLS_SRST
;
1762 else if (strcmp(args
[1], "combined") == 0)
1763 jtag_reset_config
|= RESET_SRST_PULLS_TRST
| RESET_TRST_PULLS_SRST
;
1766 LOG_ERROR("invalid reset_config argument, defaulting to none");
1767 jtag_reset_config
= RESET_NONE
;
1768 return ERROR_INVALID_ARGUMENTS
;
1775 if (strcmp(args
[2], "trst_open_drain") == 0)
1776 jtag_reset_config
|= RESET_TRST_OPEN_DRAIN
;
1777 else if (strcmp(args
[2], "trst_push_pull") == 0)
1778 jtag_reset_config
&= ~RESET_TRST_OPEN_DRAIN
;
1781 LOG_ERROR("invalid reset_config argument, defaulting to none");
1782 jtag_reset_config
= RESET_NONE
;
1783 return ERROR_INVALID_ARGUMENTS
;
1789 if (strcmp(args
[3], "srst_push_pull") == 0)
1790 jtag_reset_config
|= RESET_SRST_PUSH_PULL
;
1791 else if (strcmp(args
[3], "srst_open_drain") == 0)
1792 jtag_reset_config
&= ~RESET_SRST_PUSH_PULL
;
1795 LOG_ERROR("invalid reset_config argument, defaulting to none");
1796 jtag_reset_config
= RESET_NONE
;
1797 return ERROR_INVALID_ARGUMENTS
;
1804 int handle_jtag_nsrst_delay_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
1808 LOG_ERROR("jtag_nsrst_delay <ms> command takes one required argument");
1813 jtag_nsrst_delay
= strtoul(args
[0], NULL
, 0);
1819 int handle_jtag_ntrst_delay_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
1823 LOG_ERROR("jtag_ntrst_delay <ms> command takes one required argument");
1828 jtag_ntrst_delay
= strtoul(args
[0], NULL
, 0);
1834 int handle_jtag_speed_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
1840 if ((argc
<1) || (argc
>2))
1841 return ERROR_COMMAND_SYNTAX_ERROR
;
1843 LOG_DEBUG("handle jtag speed");
1846 cur_speed
= jtag_speed
= jtag_speed_post_reset
= strtoul(args
[0], NULL
, 0);
1848 cur_speed
= jtag_speed_post_reset
= strtoul(args
[1], NULL
, 0);
1850 /* this command can be called during CONFIG,
1851 * in which case jtag isn't initialized */
1853 jtag
->speed(cur_speed
);
1855 command_print(cmd_ctx
, "jtag_speed: %d, %d", jtag_speed
, jtag_speed_post_reset
);
1860 int handle_jtag_khz_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
1862 LOG_DEBUG("handle jtag khz");
1864 if ((argc
<1) || (argc
>2))
1865 return ERROR_COMMAND_SYNTAX_ERROR
;
1868 speed1
= speed2
= strtoul(args
[0], NULL
, 0);
1870 speed2
= strtoul(args
[1], NULL
, 0);
1875 LOG_DEBUG("have interface set up");
1876 int speed_div1
, speed_div2
;
1877 if (jtag
->khz(speed1
, &speed_div1
)!=ERROR_OK
)
1879 if (jtag
->khz(speed2
, &speed_div2
)!=ERROR_OK
)
1883 cur_speed
= jtag_speed
= jtag_speed_post_reset
= speed_div1
;
1885 cur_speed
= jtag_speed_post_reset
= speed_div2
;
1887 jtag
->speed(cur_speed
);
1897 int handle_endstate_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
1899 enum tap_state state
;
1903 return ERROR_COMMAND_SYNTAX_ERROR
;
1907 for (state
= 0; state
< 16; state
++)
1909 if (strcmp(args
[0], tap_state_strings
[state
]) == 0)
1911 jtag_add_end_state(state
);
1912 jtag_execute_queue();
1916 command_print(cmd_ctx
, "current endstate: %s", tap_state_strings
[cmd_queue_end_state
]);
1921 int handle_jtag_reset_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
1928 return ERROR_COMMAND_SYNTAX_ERROR
;
1931 if (args
[0][0] == '1')
1933 else if (args
[0][0] == '0')
1937 return ERROR_COMMAND_SYNTAX_ERROR
;
1940 if (args
[1][0] == '1')
1942 else if (args
[1][0] == '0')
1946 return ERROR_COMMAND_SYNTAX_ERROR
;
1949 if (jtag_interface_init(cmd_ctx
) != ERROR_OK
)
1950 return ERROR_JTAG_INIT_FAILED
;
1952 jtag_add_reset(trst
, srst
);
1953 jtag_execute_queue();
1958 int handle_runtest_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
1962 return ERROR_COMMAND_SYNTAX_ERROR
;
1965 jtag_add_runtest(strtol(args
[0], NULL
, 0), -1);
1966 jtag_execute_queue();
1973 int handle_irscan_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
1976 scan_field_t
*fields
;
1978 if ((argc
< 2) || (argc
% 2))
1980 return ERROR_COMMAND_SYNTAX_ERROR
;
1983 fields
= malloc(sizeof(scan_field_t
) * argc
/ 2);
1985 for (i
= 0; i
< argc
/ 2; i
++)
1987 int device
= strtoul(args
[i
*2], NULL
, 0);
1988 int field_size
= jtag_get_device(device
)->ir_length
;
1989 fields
[i
].device
= device
;
1990 fields
[i
].out_value
= malloc(CEIL(field_size
, 8));
1991 buf_set_u32(fields
[i
].out_value
, 0, field_size
, strtoul(args
[i
*2+1], NULL
, 0));
1992 fields
[i
].out_mask
= NULL
;
1993 fields
[i
].in_value
= NULL
;
1994 fields
[i
].in_check_mask
= NULL
;
1995 fields
[i
].in_handler
= NULL
;
1996 fields
[i
].in_handler_priv
= NULL
;
1999 jtag_add_ir_scan(argc
/ 2, fields
, -1);
2000 jtag_execute_queue();
2002 for (i
= 0; i
< argc
/ 2; i
++)
2003 free(fields
[i
].out_value
);
2010 int handle_drscan_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
2012 scan_field_t
*fields
;
2014 int field_count
= 0;
2018 if ((argc
< 2) || (argc
% 2))
2020 return ERROR_COMMAND_SYNTAX_ERROR
;
2023 for (i
= 0; i
< argc
; i
+=2)
2025 var
= get_var_by_namenum(args
[i
+1]);
2028 num_fields
+= var
->num_fields
;
2032 command_print(cmd_ctx
, "variable %s doesn't exist", args
[i
+1]);
2037 fields
= malloc(sizeof(scan_field_t
) * num_fields
);
2039 for (i
= 0; i
< argc
; i
+=2)
2041 var
= get_var_by_namenum(args
[i
+1]);
2043 for (j
= 0; j
< var
->num_fields
; j
++)
2045 fields
[field_count
].device
= strtol(args
[i
], NULL
, 0);
2046 fields
[field_count
].num_bits
= var
->fields
[j
].num_bits
;
2047 fields
[field_count
].out_value
= malloc(CEIL(var
->fields
[j
].num_bits
, 8));
2048 buf_set_u32(fields
[field_count
].out_value
, 0, var
->fields
[j
].num_bits
, var
->fields
[j
].value
);
2049 fields
[field_count
].out_mask
= NULL
;
2050 fields
[field_count
].in_value
= fields
[field_count
].out_value
;
2051 fields
[field_count
].in_check_mask
= NULL
;
2052 fields
[field_count
].in_check_value
= NULL
;
2053 fields
[field_count
].in_handler
= field_le_to_host
;
2054 fields
[field_count
++].in_handler_priv
= &(var
->fields
[j
]);
2058 jtag_add_dr_scan(num_fields
, fields
, -1);
2059 jtag_execute_queue();
2061 for (i
= 0; i
< argc
/ 2; i
++)
2062 free(fields
[i
].out_value
);
2069 int handle_verify_ircapture_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
2073 if (strcmp(args
[0], "enable") == 0)
2075 jtag_verify_capture_ir
= 1;
2077 else if (strcmp(args
[0], "disable") == 0)
2079 jtag_verify_capture_ir
= 0;
2082 return ERROR_COMMAND_SYNTAX_ERROR
;
2084 } else if (argc
!= 0)
2086 return ERROR_COMMAND_SYNTAX_ERROR
;
2089 command_print(cmd_ctx
, "verify Capture-IR is %s", (jtag_verify_capture_ir
) ? "enabled": "disabled");
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