1 /***************************************************************************
2 * Copyright (C) 2005 by Dominic Rath *
3 * Dominic.Rath@gmx.de *
5 * Copyright (C) 2007,2008 Øyvind Harboe *
6 * oyvind.harboe@zylin.com *
8 * Copyright (C) 2009 SoftPLC Corporation *
12 * This program is free software; you can redistribute it and/or modify *
13 * it under the terms of the GNU General Public License as published by *
14 * the Free Software Foundation; either version 2 of the License, or *
15 * (at your option) any later version. *
17 * This program is distributed in the hope that it will be useful, *
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
20 * GNU General Public License for more details. *
22 * You should have received a copy of the GNU General Public License *
23 * along with this program; if not, write to the *
24 * Free Software Foundation, Inc., *
25 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
26 ***************************************************************************/
31 #define INCLUDE_JTAG_MINIDRIVER_H
32 #define INCLUDE_JTAG_INTERFACE_H
40 int jtag_flush_queue_count; /* count # of flushes for profiling / debugging purposes */
42 static void jtag_add_scan_check(void (*jtag_add_scan)(int in_num_fields, const scan_field_t *in_fields, tap_state_t state),
43 int in_num_fields, scan_field_t *in_fields, tap_state_t state);
45 /* note that this is not marked as static as it must be available from outside jtag.c for those
46 that implement the jtag_xxx() minidriver layer
48 int jtag_error=ERROR_OK;
50 typedef struct cmd_queue_page_s
54 struct cmd_queue_page_s *next;
57 #define CMD_QUEUE_PAGE_SIZE (1024 * 1024)
58 static cmd_queue_page_t *cmd_queue_pages = NULL;
60 char* jtag_event_strings[] =
62 "JTAG controller reset (RESET or TRST)"
65 const Jim_Nvp nvp_jtag_tap_event[] = {
66 { .value = JTAG_TAP_EVENT_ENABLE, .name = "tap-enable" },
67 { .value = JTAG_TAP_EVENT_DISABLE, .name = "tap-disable" },
69 { .name = NULL, .value = -1 }
75 #ifndef HAVE_JTAG_MINIDRIVER_H
76 struct jtag_callback_entry
78 struct jtag_callback_entry *next;
80 jtag_callback_t callback;
82 jtag_callback_data_t data1;
83 jtag_callback_data_t data2;
84 jtag_callback_data_t data3;
88 static struct jtag_callback_entry *jtag_callback_queue_head = NULL;
89 static struct jtag_callback_entry *jtag_callback_queue_tail = NULL;
91 static void jtag_callback_queue_reset(void)
93 jtag_callback_queue_head = NULL;
94 jtag_callback_queue_tail = NULL;
99 jtag_command_t *jtag_command_queue = NULL;
100 static jtag_command_t **next_command_pointer = &jtag_command_queue;
101 static jtag_tap_t *jtag_all_taps = NULL;
103 enum reset_types jtag_reset_config = RESET_NONE;
104 tap_state_t cmd_queue_end_state = TAP_RESET;
105 tap_state_t cmd_queue_cur_state = TAP_RESET;
107 int jtag_verify_capture_ir = 1;
110 /* how long the OpenOCD should wait before attempting JTAG communication after reset lines deasserted (in ms) */
111 static int jtag_nsrst_delay = 0; /* default to no nSRST delay */
112 static int jtag_ntrst_delay = 0; /* default to no nTRST delay */
114 /* maximum number of JTAG devices expected in the chain
116 #define JTAG_MAX_CHAIN_SIZE 20
118 /* callbacks to inform high-level handlers about JTAG state changes */
119 jtag_event_callback_t *jtag_event_callbacks;
122 static int speed_khz = 0;
123 /* flag if the kHz speed was defined */
124 static int hasKHz = 0;
126 /* jtag interfaces (parport, FTDI-USB, TI-USB, ...)
129 #if BUILD_ECOSBOARD == 1
130 extern jtag_interface_t zy1000_interface;
133 #if BUILD_PARPORT == 1
134 extern jtag_interface_t parport_interface;
138 extern jtag_interface_t dummy_interface;
141 #if BUILD_FT2232_FTD2XX == 1
142 extern jtag_interface_t ft2232_interface;
145 #if BUILD_FT2232_LIBFTDI == 1
146 extern jtag_interface_t ft2232_interface;
149 #if BUILD_AMTJTAGACCEL == 1
150 extern jtag_interface_t amt_jtagaccel_interface;
153 #if BUILD_EP93XX == 1
154 extern jtag_interface_t ep93xx_interface;
157 #if BUILD_AT91RM9200 == 1
158 extern jtag_interface_t at91rm9200_interface;
161 #if BUILD_GW16012 == 1
162 extern jtag_interface_t gw16012_interface;
165 #if BUILD_PRESTO_LIBFTDI == 1 || BUILD_PRESTO_FTD2XX == 1
166 extern jtag_interface_t presto_interface;
169 #if BUILD_USBPROG == 1
170 extern jtag_interface_t usbprog_interface;
174 extern jtag_interface_t jlink_interface;
177 #if BUILD_VSLLINK == 1
178 extern jtag_interface_t vsllink_interface;
182 extern jtag_interface_t rlink_interface;
185 #if BUILD_ARMJTAGEW == 1
186 extern jtag_interface_t armjtagew_interface;
189 jtag_interface_t *jtag_interfaces[] = {
190 #if BUILD_ECOSBOARD == 1
193 #if BUILD_PARPORT == 1
199 #if BUILD_FT2232_FTD2XX == 1
202 #if BUILD_FT2232_LIBFTDI == 1
205 #if BUILD_AMTJTAGACCEL == 1
206 &amt_jtagaccel_interface,
208 #if BUILD_EP93XX == 1
211 #if BUILD_AT91RM9200 == 1
212 &at91rm9200_interface,
214 #if BUILD_GW16012 == 1
217 #if BUILD_PRESTO_LIBFTDI == 1 || BUILD_PRESTO_FTD2XX == 1
220 #if BUILD_USBPROG == 1
226 #if BUILD_VSLLINK == 1
232 #if BUILD_ARMJTAGEW == 1
233 &armjtagew_interface,
238 static jtag_interface_t *jtag = NULL;
241 static jtag_interface_t *jtag_interface = NULL;
244 /* forward declarations */
245 //void jtag_add_pathmove(int num_states, tap_state_t *path);
246 //void jtag_add_runtest(int num_cycles, tap_state_t endstate);
247 //void jtag_add_end_state(tap_state_t endstate);
248 //void jtag_add_sleep(u32 us);
249 //int jtag_execute_queue(void);
250 static tap_state_t tap_state_by_name(const char *name);
253 static int handle_interface_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
254 static int handle_jtag_speed_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
255 static int handle_jtag_khz_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
256 static int handle_jtag_device_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
257 static int handle_reset_config_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
258 static int handle_jtag_nsrst_delay_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
259 static int handle_jtag_ntrst_delay_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
261 static int handle_scan_chain_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
263 static int handle_endstate_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
264 static int handle_jtag_reset_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
265 static int handle_runtest_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
266 static int handle_irscan_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
267 static int Jim_Command_drscan(Jim_Interp *interp, int argc, Jim_Obj *const *argv);
268 static int Jim_Command_flush_count(Jim_Interp *interp, int argc, Jim_Obj *const *args);
270 static int handle_verify_ircapture_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
271 static int handle_verify_jtag_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
272 static int handle_tms_sequence_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
274 jtag_tap_t *jtag_AllTaps(void)
276 return jtag_all_taps;
279 int jtag_NumTotalTaps(void)
293 int jtag_NumEnabledTaps(void)
309 jtag_tap_t *jtag_TapByString( const char *s )
317 if( 0 == strcmp( t->dotted_name, s ) ){
323 /* backup plan is by number */
325 /* ok - is "s" a number? */
327 n = strtol( s, &cp, 0 );
328 if( (s != cp) && (*cp == 0) ){
330 t = jtag_TapByAbsPosition(n);
336 jtag_tap_t * jtag_TapByJimObj( Jim_Interp *interp, Jim_Obj *o )
341 cp = Jim_GetString( o, NULL );
346 t = jtag_TapByString( cp );
349 Jim_SetResult_sprintf(interp,"Tap: %s is unknown", cp );
354 /* returns a pointer to the n-th device in the scan chain */
355 jtag_tap_t * jtag_TapByAbsPosition( int n )
363 while( t && (n > 0)) {
370 int jtag_register_event_callback(int (*callback)(enum jtag_event event, void *priv), void *priv)
372 jtag_event_callback_t **callbacks_p = &jtag_event_callbacks;
374 if (callback == NULL)
376 return ERROR_INVALID_ARGUMENTS;
381 while ((*callbacks_p)->next)
382 callbacks_p = &((*callbacks_p)->next);
383 callbacks_p = &((*callbacks_p)->next);
386 (*callbacks_p) = malloc(sizeof(jtag_event_callback_t));
387 (*callbacks_p)->callback = callback;
388 (*callbacks_p)->priv = priv;
389 (*callbacks_p)->next = NULL;
394 int jtag_unregister_event_callback(int (*callback)(enum jtag_event event, void *priv))
396 jtag_event_callback_t **callbacks_p = &jtag_event_callbacks;
398 if (callback == NULL)
400 return ERROR_INVALID_ARGUMENTS;
405 jtag_event_callback_t **next = &((*callbacks_p)->next);
406 if ((*callbacks_p)->callback == callback)
409 *callbacks_p = *next;
417 int jtag_call_event_callbacks(enum jtag_event event)
419 jtag_event_callback_t *callback = jtag_event_callbacks;
421 LOG_DEBUG("jtag event: %s", jtag_event_strings[event]);
425 callback->callback(event, callback->priv);
426 callback = callback->next;
432 void jtag_queue_command(jtag_command_t * cmd)
434 // this command goes on the end, so ensure the queue terminates
437 jtag_command_t **last_cmd = next_command_pointer;
438 assert(NULL != last_cmd);
439 assert(NULL == *last_cmd);
442 // store location where the next command pointer will be stored
443 next_command_pointer = &cmd->next;
446 void* cmd_queue_alloc(size_t size)
448 cmd_queue_page_t **p_page = &cmd_queue_pages;
454 * We align/round the *SIZE* per below
455 * so that all pointers returned by
456 * this function are reasonably well
459 * If we did not, then an "odd-length" request would cause the
460 * *next* allocation to be at an *odd* address, and because
461 * this function has the same type of api as malloc() - we
462 * must also return pointers that have the same type of
465 * What I do not/have is a reasonable portable means
468 * The solution here, is based on these suggestions.
469 * http://gcc.gnu.org/ml/gcc-help/2008-12/msg00041.html
472 union worse_case_align {
478 #define ALIGN_SIZE (sizeof(union worse_case_align))
480 /* The alignment process. */
481 size = (size + ALIGN_SIZE -1) & (~(ALIGN_SIZE-1));
486 while ((*p_page)->next)
487 p_page = &((*p_page)->next);
488 if (CMD_QUEUE_PAGE_SIZE - (*p_page)->used < size)
489 p_page = &((*p_page)->next);
494 *p_page = malloc(sizeof(cmd_queue_page_t));
496 (*p_page)->address = malloc(CMD_QUEUE_PAGE_SIZE);
497 (*p_page)->next = NULL;
500 offset = (*p_page)->used;
501 (*p_page)->used += size;
503 t=(u8 *)((*p_page)->address);
507 void cmd_queue_free(void)
509 cmd_queue_page_t *page = cmd_queue_pages;
513 cmd_queue_page_t *last = page;
519 cmd_queue_pages = NULL;
522 void jtag_command_queue_reset(void)
526 jtag_command_queue = NULL;
527 next_command_pointer = &jtag_command_queue;
531 * Copy a scan_field_t for insertion into the queue.
533 * This allocates a new copy of out_value using cmd_queue_alloc.
535 static void cmd_queue_scan_field_clone(scan_field_t * dst, const scan_field_t * src)
538 dst->num_bits = src->num_bits;
539 dst->out_value = buf_cpy(src->out_value, cmd_queue_alloc(CEIL(src->num_bits, 8)), src->num_bits);
540 dst->in_value = src->in_value;
544 static void jtag_prelude1(void)
548 LOG_WARNING("JTAG command queued, while TRST is low (TAP in reset)");
549 jtag_error=ERROR_JTAG_TRST_ASSERTED;
553 if (cmd_queue_end_state == TAP_RESET)
554 jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
557 static void jtag_prelude(tap_state_t state)
561 if (state != TAP_INVALID)
562 jtag_add_end_state(state);
564 cmd_queue_cur_state = cmd_queue_end_state;
567 void jtag_add_ir_scan_noverify(int in_num_fields, const scan_field_t *in_fields, tap_state_t state)
572 retval=interface_jtag_add_ir_scan(in_num_fields, in_fields, cmd_queue_end_state);
573 if (retval!=ERROR_OK)
580 * Generate an IR SCAN with a list of scan fields with one entry for each enabled TAP.
582 * If the input field list contains an instruction value for a TAP then that is used
583 * otherwise the TAP is set to bypass.
585 * TAPs for which no fields are passed are marked as bypassed for subsequent DR SCANs.
588 void jtag_add_ir_scan(int in_num_fields, scan_field_t *in_fields, tap_state_t state)
590 if (jtag_verify&&jtag_verify_capture_ir)
592 /* 8 x 32 bit id's is enough for all invocations */
594 for (int j = 0; j < in_num_fields; j++)
596 /* if we are to run a verification of the ir scan, we need to get the input back.
597 * We may have to allocate space if the caller didn't ask for the input back.
599 in_fields[j].check_value=in_fields[j].tap->expected;
600 in_fields[j].check_mask=in_fields[j].tap->expected_mask;
602 jtag_add_scan_check(jtag_add_ir_scan_noverify, in_num_fields, in_fields, state);
605 jtag_add_ir_scan_noverify(in_num_fields, in_fields, state);
610 * see jtag_add_ir_scan()
613 int MINIDRIVER(interface_jtag_add_ir_scan)(int in_num_fields, const scan_field_t *in_fields, tap_state_t state)
615 size_t num_taps = jtag_NumEnabledTaps();
617 jtag_command_t * cmd = cmd_queue_alloc(sizeof(jtag_command_t));
618 scan_command_t * scan = cmd_queue_alloc(sizeof(scan_command_t));
619 scan_field_t * out_fields = cmd_queue_alloc(num_taps * sizeof(scan_field_t));
621 jtag_queue_command(cmd);
623 cmd->type = JTAG_SCAN;
624 cmd->cmd.scan = scan;
626 scan->ir_scan = true;
627 scan->num_fields = num_taps; /* one field per device */
628 scan->fields = out_fields;
629 scan->end_state = state;
632 scan_field_t * field = out_fields; /* keep track where we insert data */
634 /* loop over all enabled TAPs */
636 for (jtag_tap_t * tap = jtag_NextEnabledTap(NULL); tap != NULL; tap = jtag_NextEnabledTap(tap))
638 /* search the input field list for fields for the current TAP */
642 for (int j = 0; j < in_num_fields; j++)
644 if (tap != in_fields[j].tap)
647 /* if TAP is listed in input fields, copy the value */
653 assert(in_fields[j].num_bits == tap->ir_length); /* input fields must have the same length as the TAP's IR */
655 cmd_queue_scan_field_clone(field, in_fields + j);
662 /* if a TAP isn't listed in input fields, set it to BYPASS */
667 field->num_bits = tap->ir_length;
668 field->out_value = buf_set_ones(cmd_queue_alloc(CEIL(tap->ir_length, 8)), tap->ir_length);
669 field->in_value = NULL; /* do not collect input for tap's in bypass */
672 /* update device information */
673 buf_cpy(field->out_value, tap->cur_instr, tap->ir_length);
678 assert(field == out_fields + num_taps); /* paranoia: jtag_NumEnabledTaps() and jtag_NextEnabledTap() not in sync */
684 * Duplicate the scan fields passed into the function into an IR SCAN command
686 * This function assumes that the caller handles extra fields for bypassed TAPs
689 void jtag_add_plain_ir_scan(int in_num_fields, const scan_field_t *in_fields, tap_state_t state)
695 retval=interface_jtag_add_plain_ir_scan(in_num_fields, in_fields, cmd_queue_end_state);
696 if (retval!=ERROR_OK)
702 * see jtag_add_plain_ir_scan()
705 int MINIDRIVER(interface_jtag_add_plain_ir_scan)(int in_num_fields, const scan_field_t *in_fields, tap_state_t state)
708 jtag_command_t * cmd = cmd_queue_alloc(sizeof(jtag_command_t));
709 scan_command_t * scan = cmd_queue_alloc(sizeof(scan_command_t));
710 scan_field_t * out_fields = cmd_queue_alloc(in_num_fields * sizeof(scan_field_t));
712 jtag_queue_command(cmd);
714 cmd->type = JTAG_SCAN;
715 cmd->cmd.scan = scan;
717 scan->ir_scan = true;
718 scan->num_fields = in_num_fields;
719 scan->fields = out_fields;
720 scan->end_state = state;
722 for (int i = 0; i < in_num_fields; i++)
723 cmd_queue_scan_field_clone(out_fields + i, in_fields + i);
730 int jtag_check_value_inner(u8 *captured, u8 *in_check_value, u8 *in_check_mask, int num_bits);
732 static int jtag_check_value_mask_callback(u8 *in, jtag_callback_data_t data1, jtag_callback_data_t data2, jtag_callback_data_t data3)
734 return jtag_check_value_inner(in, (u8 *)data1, (u8 *)data2, (int)data3);
737 #ifdef HAVE_JTAG_MINIDRIVER_H
738 void interface_jtag_add_scan_check_alloc(scan_field_t *field)
740 /* We're executing this synchronously, so try to use local storage. */
741 if (field->num_bits > 32)
743 unsigned num_bytes = TAP_SCAN_BYTES(field->num_bits);
744 field->in_value = (u8 *)malloc(num_bytes);
745 field->allocated = 1;
748 field->in_value = field->intmp;
751 void interface_jtag_add_scan_check_alloc(scan_field_t *field)
753 unsigned num_bytes = TAP_SCAN_BYTES(field->num_bits);
754 field->in_value = (u8 *)cmd_queue_alloc(num_bytes);
758 static void jtag_add_scan_check(void (*jtag_add_scan)(int in_num_fields, const scan_field_t *in_fields, tap_state_t state),
759 int in_num_fields, scan_field_t *in_fields, tap_state_t state)
761 for (int i = 0; i < in_num_fields; i++)
763 struct scan_field_s *field = &in_fields[i];
764 field->allocated = 0;
766 if (field->check_value || field->in_value)
768 interface_jtag_add_scan_check_alloc(field);
772 jtag_add_scan(in_num_fields, in_fields, state);
774 for (int i = 0; i < in_num_fields; i++)
776 if ((in_fields[i].check_value != NULL) && (in_fields[i].in_value != NULL))
778 /* this is synchronous for a minidriver */
779 jtag_add_callback4(jtag_check_value_mask_callback, in_fields[i].in_value,
780 (jtag_callback_data_t)in_fields[i].check_value,
781 (jtag_callback_data_t)in_fields[i].check_mask,
782 (jtag_callback_data_t)in_fields[i].num_bits);
784 if (in_fields[i].allocated)
786 free(in_fields[i].in_value);
788 if (in_fields[i].modified)
790 in_fields[i].in_value = NULL;
795 void jtag_add_dr_scan_check(int in_num_fields, scan_field_t *in_fields, tap_state_t state)
799 jtag_add_scan_check(jtag_add_dr_scan, in_num_fields, in_fields, state);
802 jtag_add_dr_scan(in_num_fields, in_fields, state);
808 * Generate a DR SCAN using the fields passed to the function
810 * For not bypassed TAPs the function checks in_fields and uses fields specified there.
811 * For bypassed TAPs the function generates a dummy 1bit field.
813 * The bypass status of TAPs is set by jtag_add_ir_scan().
816 void jtag_add_dr_scan(int in_num_fields, const scan_field_t *in_fields, tap_state_t state)
822 retval=interface_jtag_add_dr_scan(in_num_fields, in_fields, cmd_queue_end_state);
823 if (retval!=ERROR_OK)
829 * see jtag_add_dr_scan()
832 int MINIDRIVER(interface_jtag_add_dr_scan)(int in_num_fields, const scan_field_t *in_fields, tap_state_t state)
834 /* count devices in bypass */
836 size_t bypass_devices = 0;
838 for (jtag_tap_t * tap = jtag_NextEnabledTap(NULL); tap != NULL; tap = jtag_NextEnabledTap(tap))
844 jtag_command_t * cmd = cmd_queue_alloc(sizeof(jtag_command_t));
845 scan_command_t * scan = cmd_queue_alloc(sizeof(scan_command_t));
846 scan_field_t * out_fields = cmd_queue_alloc((in_num_fields + bypass_devices) * sizeof(scan_field_t));
848 jtag_queue_command(cmd);
850 cmd->type = JTAG_SCAN;
851 cmd->cmd.scan = scan;
853 scan->ir_scan = false;
854 scan->num_fields = in_num_fields + bypass_devices;
855 scan->fields = out_fields;
856 scan->end_state = state;
859 scan_field_t * field = out_fields; /* keep track where we insert data */
861 /* loop over all enabled TAPs */
863 for (jtag_tap_t * tap = jtag_NextEnabledTap(NULL); tap != NULL; tap = jtag_NextEnabledTap(tap))
865 /* if TAP is not bypassed insert matching input fields */
869 scan_field_t * start_field = field; /* keep initial position for assert() */
871 for (int j = 0; j < in_num_fields; j++)
873 if (tap != in_fields[j].tap)
876 cmd_queue_scan_field_clone(field, in_fields + j);
881 assert(field > start_field); /* must have at least one input field per not bypassed TAP */
884 /* if a TAP is bypassed, generated a dummy bit*/
889 field->out_value = NULL;
890 field->in_value = NULL;
896 assert(field == out_fields + scan->num_fields); /* no superfluous input fields permitted */
904 * Generate a DR SCAN using the array of output values passed to the function
906 * This function assumes that the parameter target_tap specifies the one TAP
907 * that is not bypassed. All other TAPs must be bypassed and the function will
908 * generate a dummy 1bit field for them.
910 * For the target_tap a sequence of output-only fields will be generated where
911 * each field has the size num_bits and the field's values are taken from
914 * The bypass status of TAPs is set by jtag_add_ir_scan().
917 void MINIDRIVER(interface_jtag_add_dr_out)(jtag_tap_t *target_tap,
921 tap_state_t end_state)
923 /* count devices in bypass */
925 size_t bypass_devices = 0;
927 for (jtag_tap_t * tap = jtag_NextEnabledTap(NULL); tap != NULL; tap = jtag_NextEnabledTap(tap))
934 jtag_command_t * cmd = cmd_queue_alloc(sizeof(jtag_command_t));
935 scan_command_t * scan = cmd_queue_alloc(sizeof(scan_command_t));
936 scan_field_t * out_fields = cmd_queue_alloc((in_num_fields + bypass_devices) * sizeof(scan_field_t));
938 jtag_queue_command(cmd);
940 cmd->type = JTAG_SCAN;
941 cmd->cmd.scan = scan;
943 scan->ir_scan = false;
944 scan->num_fields = in_num_fields + bypass_devices;
945 scan->fields = out_fields;
946 scan->end_state = end_state;
949 bool target_tap_match = false;
951 scan_field_t * field = out_fields; /* keep track where we insert data */
953 /* loop over all enabled TAPs */
955 for (jtag_tap_t * tap = jtag_NextEnabledTap(NULL); tap != NULL; tap = jtag_NextEnabledTap(tap))
957 /* if TAP is not bypassed insert matching input fields */
961 assert(tap == target_tap); /* target_tap must match the one not bypassed TAP */
963 target_tap_match = true;
965 for (int j = 0; j < in_num_fields; j++)
968 size_t scan_size = num_bits[j];
969 buf_set_u32(out_value, 0, scan_size, value[j]);
972 field->num_bits = scan_size;
973 field->out_value = buf_cpy(out_value, cmd_queue_alloc(CEIL(scan_size, 8)), scan_size);
974 field->in_value = NULL;
980 /* if a TAP is bypassed, generated a dummy bit*/
986 field->out_value = NULL;
987 field->in_value = NULL;
993 assert(target_tap_match); /* target_tap should be enabled and not bypassed */
998 * Duplicate the scan fields passed into the function into a DR SCAN command
1000 * This function assumes that the caller handles extra fields for bypassed TAPs
1003 void jtag_add_plain_dr_scan(int in_num_fields, const scan_field_t *in_fields, tap_state_t state)
1007 jtag_prelude(state);
1009 retval=interface_jtag_add_plain_dr_scan(in_num_fields, in_fields, cmd_queue_end_state);
1010 if (retval!=ERROR_OK)
1016 * see jtag_add_plain_dr_scan()
1019 int MINIDRIVER(interface_jtag_add_plain_dr_scan)(int in_num_fields, const scan_field_t *in_fields, tap_state_t state)
1021 jtag_command_t * cmd = cmd_queue_alloc(sizeof(jtag_command_t));
1022 scan_command_t * scan = cmd_queue_alloc(sizeof(scan_command_t));
1023 scan_field_t * out_fields = cmd_queue_alloc(in_num_fields * sizeof(scan_field_t));
1025 jtag_queue_command(cmd);
1027 cmd->type = JTAG_SCAN;
1028 cmd->cmd.scan = scan;
1030 scan->ir_scan = false;
1031 scan->num_fields = in_num_fields;
1032 scan->fields = out_fields;
1033 scan->end_state = state;
1035 for (int i = 0; i < in_num_fields; i++)
1036 cmd_queue_scan_field_clone(out_fields + i, in_fields + i);
1042 void jtag_add_tlr(void)
1044 jtag_prelude(TAP_RESET);
1047 retval=interface_jtag_add_tlr();
1048 if (retval!=ERROR_OK)
1052 int MINIDRIVER(interface_jtag_add_tlr)(void)
1054 tap_state_t state = TAP_RESET;
1056 /* allocate memory for a new list member */
1057 jtag_command_t * cmd = cmd_queue_alloc(sizeof(jtag_command_t));
1059 jtag_queue_command(cmd);
1061 cmd->type = JTAG_STATEMOVE;
1063 cmd->cmd.statemove = cmd_queue_alloc(sizeof(statemove_command_t));
1064 cmd->cmd.statemove->end_state = state;
1069 void jtag_add_pathmove(int num_states, const tap_state_t *path)
1071 tap_state_t cur_state = cmd_queue_cur_state;
1075 /* the last state has to be a stable state */
1076 if (!tap_is_state_stable(path[num_states - 1]))
1078 LOG_ERROR("BUG: TAP path doesn't finish in a stable state");
1082 for (i=0; i<num_states; i++)
1084 if (path[i] == TAP_RESET)
1086 LOG_ERROR("BUG: TAP_RESET is not a valid state for pathmove sequences");
1090 if ( tap_state_transition(cur_state, true) != path[i]
1091 && tap_state_transition(cur_state, false) != path[i])
1093 LOG_ERROR("BUG: %s -> %s isn't a valid TAP transition", tap_state_name(cur_state), tap_state_name(path[i]));
1096 cur_state = path[i];
1101 retval = interface_jtag_add_pathmove(num_states, path);
1102 cmd_queue_cur_state = path[num_states - 1];
1103 if (retval!=ERROR_OK)
1107 int MINIDRIVER(interface_jtag_add_pathmove)(int num_states, const tap_state_t *path)
1109 /* allocate memory for a new list member */
1110 jtag_command_t * cmd = cmd_queue_alloc(sizeof(jtag_command_t));
1112 jtag_queue_command(cmd);
1114 cmd->type = JTAG_PATHMOVE;
1116 cmd->cmd.pathmove = cmd_queue_alloc(sizeof(pathmove_command_t));
1117 cmd->cmd.pathmove->num_states = num_states;
1118 cmd->cmd.pathmove->path = cmd_queue_alloc(sizeof(tap_state_t) * num_states);
1120 for (int i = 0; i < num_states; i++)
1121 cmd->cmd.pathmove->path[i] = path[i];
1126 int MINIDRIVER(interface_jtag_add_runtest)(int num_cycles, tap_state_t state)
1128 /* allocate memory for a new list member */
1129 jtag_command_t * cmd = cmd_queue_alloc(sizeof(jtag_command_t));
1131 jtag_queue_command(cmd);
1133 cmd->type = JTAG_RUNTEST;
1135 cmd->cmd.runtest = cmd_queue_alloc(sizeof(runtest_command_t));
1136 cmd->cmd.runtest->num_cycles = num_cycles;
1137 cmd->cmd.runtest->end_state = state;
1142 void jtag_add_runtest(int num_cycles, tap_state_t state)
1146 jtag_prelude(state);
1148 /* executed by sw or hw fifo */
1149 retval=interface_jtag_add_runtest(num_cycles, cmd_queue_end_state);
1150 if (retval!=ERROR_OK)
1155 int MINIDRIVER(interface_jtag_add_clocks)( int num_cycles )
1157 /* allocate memory for a new list member */
1158 jtag_command_t * cmd = cmd_queue_alloc(sizeof(jtag_command_t));
1160 jtag_queue_command(cmd);
1162 cmd->type = JTAG_STABLECLOCKS;
1164 cmd->cmd.stableclocks = cmd_queue_alloc(sizeof(stableclocks_command_t));
1165 cmd->cmd.stableclocks->num_cycles = num_cycles;
1170 void jtag_add_clocks( int num_cycles )
1174 if( !tap_is_state_stable(cmd_queue_cur_state) )
1176 LOG_ERROR( "jtag_add_clocks() was called with TAP in non-stable state \"%s\"",
1177 tap_state_name(cmd_queue_cur_state) );
1178 jtag_error = ERROR_JTAG_NOT_STABLE_STATE;
1182 if( num_cycles > 0 )
1186 retval = interface_jtag_add_clocks(num_cycles);
1187 if (retval != ERROR_OK)
1192 void jtag_add_reset(int req_tlr_or_trst, int req_srst)
1194 int trst_with_tlr = 0;
1197 /* FIX!!! there are *many* different cases here. A better
1198 * approach is needed for legal combinations of transitions...
1200 if ((jtag_reset_config & RESET_HAS_SRST)&&
1201 (jtag_reset_config & RESET_HAS_TRST)&&
1202 ((jtag_reset_config & RESET_SRST_PULLS_TRST)==0))
1204 if (((req_tlr_or_trst&&!jtag_trst)||
1205 (!req_tlr_or_trst&&jtag_trst))&&
1206 ((req_srst&&!jtag_srst)||
1207 (!req_srst&&jtag_srst)))
1209 /* FIX!!! srst_pulls_trst allows 1,1 => 0,0 transition.... */
1210 //LOG_ERROR("BUG: transition of req_tlr_or_trst and req_srst in the same jtag_add_reset() call is undefined");
1214 /* Make sure that jtag_reset_config allows the requested reset */
1215 /* if SRST pulls TRST, we can't fulfill srst == 1 with trst == 0 */
1216 if (((jtag_reset_config & RESET_SRST_PULLS_TRST) && (req_srst == 1)) && (!req_tlr_or_trst))
1218 LOG_ERROR("BUG: requested reset would assert trst");
1219 jtag_error=ERROR_FAIL;
1223 /* if TRST pulls SRST, we reset with TAP T-L-R */
1224 if (((jtag_reset_config & RESET_TRST_PULLS_SRST) && (req_tlr_or_trst)) && (req_srst == 0))
1229 if (req_srst && !(jtag_reset_config & RESET_HAS_SRST))
1231 LOG_ERROR("BUG: requested SRST assertion, but the current configuration doesn't support this");
1232 jtag_error=ERROR_FAIL;
1236 if (req_tlr_or_trst)
1238 if (!trst_with_tlr && (jtag_reset_config & RESET_HAS_TRST))
1250 jtag_srst = req_srst;
1252 retval = interface_jtag_add_reset(jtag_trst, jtag_srst);
1253 if (retval!=ERROR_OK)
1258 jtag_execute_queue();
1262 LOG_DEBUG("SRST line asserted");
1266 LOG_DEBUG("SRST line released");
1267 if (jtag_nsrst_delay)
1268 jtag_add_sleep(jtag_nsrst_delay * 1000);
1273 LOG_DEBUG("JTAG reset with RESET instead of TRST");
1274 jtag_add_end_state(TAP_RESET);
1276 jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
1282 /* we just asserted nTRST, so we're now in Test-Logic-Reset,
1283 * and inform possible listeners about this
1285 LOG_DEBUG("TRST line asserted");
1286 tap_set_state(TAP_RESET);
1287 jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
1291 if (jtag_ntrst_delay)
1292 jtag_add_sleep(jtag_ntrst_delay * 1000);
1296 int MINIDRIVER(interface_jtag_add_reset)(int req_trst, int req_srst)
1298 /* allocate memory for a new list member */
1299 jtag_command_t * cmd = cmd_queue_alloc(sizeof(jtag_command_t));
1301 jtag_queue_command(cmd);
1303 cmd->type = JTAG_RESET;
1305 cmd->cmd.reset = cmd_queue_alloc(sizeof(reset_command_t));
1306 cmd->cmd.reset->trst = req_trst;
1307 cmd->cmd.reset->srst = req_srst;
1312 void jtag_add_end_state(tap_state_t state)
1314 cmd_queue_end_state = state;
1315 if ((cmd_queue_end_state == TAP_DRSHIFT)||(cmd_queue_end_state == TAP_IRSHIFT))
1317 LOG_ERROR("BUG: TAP_DRSHIFT/IRSHIFT can't be end state. Calling code should use a larger scan field");
1321 int MINIDRIVER(interface_jtag_add_sleep)(u32 us)
1323 /* allocate memory for a new list member */
1324 jtag_command_t * cmd = cmd_queue_alloc(sizeof(jtag_command_t));
1326 jtag_queue_command(cmd);
1328 cmd->type = JTAG_SLEEP;
1330 cmd->cmd.sleep = cmd_queue_alloc(sizeof(sleep_command_t));
1331 cmd->cmd.sleep->us = us;
1336 void jtag_add_sleep(u32 us)
1338 keep_alive(); /* we might be running on a very slow JTAG clk */
1339 int retval=interface_jtag_add_sleep(us);
1340 if (retval!=ERROR_OK)
1345 int jtag_scan_size(const scan_command_t *cmd)
1350 /* count bits in scan command */
1351 for (i = 0; i < cmd->num_fields; i++)
1353 bit_count += cmd->fields[i].num_bits;
1359 int jtag_build_buffer(const scan_command_t *cmd, u8 **buffer)
1364 bit_count = jtag_scan_size(cmd);
1365 *buffer = calloc(1,CEIL(bit_count, 8));
1369 #ifdef _DEBUG_JTAG_IO_
1370 LOG_DEBUG("%s num_fields: %i", cmd->ir_scan ? "IRSCAN" : "DRSCAN", cmd->num_fields);
1373 for (i = 0; i < cmd->num_fields; i++)
1375 if (cmd->fields[i].out_value)
1377 #ifdef _DEBUG_JTAG_IO_
1378 char* char_buf = buf_to_str(cmd->fields[i].out_value, (cmd->fields[i].num_bits > DEBUG_JTAG_IOZ) ? DEBUG_JTAG_IOZ : cmd->fields[i].num_bits, 16);
1380 buf_set_buf(cmd->fields[i].out_value, 0, *buffer, bit_count, cmd->fields[i].num_bits);
1381 #ifdef _DEBUG_JTAG_IO_
1382 LOG_DEBUG("fields[%i].out_value[%i]: 0x%s", i, cmd->fields[i].num_bits, char_buf);
1388 #ifdef _DEBUG_JTAG_IO_
1389 LOG_DEBUG("fields[%i].out_value[%i]: NULL", i, cmd->fields[i].num_bits);
1393 bit_count += cmd->fields[i].num_bits;
1396 #ifdef _DEBUG_JTAG_IO_
1397 //LOG_DEBUG("bit_count totalling: %i", bit_count );
1403 int jtag_read_buffer(u8 *buffer, const scan_command_t *cmd)
1409 /* we return ERROR_OK, unless a check fails, or a handler reports a problem */
1412 for (i = 0; i < cmd->num_fields; i++)
1414 /* if neither in_value nor in_handler
1415 * are specified we don't have to examine this field
1417 if (cmd->fields[i].in_value)
1419 int num_bits = cmd->fields[i].num_bits;
1420 u8 *captured = buf_set_buf(buffer, bit_count, malloc(CEIL(num_bits, 8)), 0, num_bits);
1422 #ifdef _DEBUG_JTAG_IO_
1423 char *char_buf = buf_to_str(captured, (num_bits > DEBUG_JTAG_IOZ) ? DEBUG_JTAG_IOZ : num_bits, 16);
1424 LOG_DEBUG("fields[%i].in_value[%i]: 0x%s", i, num_bits, char_buf);
1428 if (cmd->fields[i].in_value)
1430 buf_cpy(captured, cmd->fields[i].in_value, num_bits);
1435 bit_count += cmd->fields[i].num_bits;
1441 static const char *jtag_tap_name(const jtag_tap_t *tap)
1443 return (tap == NULL) ? "(unknown)" : tap->dotted_name;
1446 int jtag_check_value_inner(u8 *captured, u8 *in_check_value, u8 *in_check_mask, int num_bits)
1448 int retval = ERROR_OK;
1450 int compare_failed = 0;
1453 compare_failed = buf_cmp_mask(captured, in_check_value, in_check_mask, num_bits);
1455 compare_failed = buf_cmp(captured, in_check_value, num_bits);
1457 if (compare_failed){
1458 /* An error handler could have caught the failing check
1459 * only report a problem when there wasn't a handler, or if the handler
1460 * acknowledged the error
1463 LOG_WARNING("TAP %s:",
1464 jtag_tap_name(field->tap));
1468 char *captured_char = buf_to_str(captured, (num_bits > DEBUG_JTAG_IOZ) ? DEBUG_JTAG_IOZ : num_bits, 16);
1469 char *in_check_value_char = buf_to_str(in_check_value, (num_bits > DEBUG_JTAG_IOZ) ? DEBUG_JTAG_IOZ : num_bits, 16);
1473 char *in_check_mask_char;
1474 in_check_mask_char = buf_to_str(in_check_mask, (num_bits > DEBUG_JTAG_IOZ) ? DEBUG_JTAG_IOZ : num_bits, 16);
1475 LOG_WARNING("value captured during scan didn't pass the requested check:");
1476 LOG_WARNING("captured: 0x%s check_value: 0x%s check_mask: 0x%s",
1477 captured_char, in_check_value_char, in_check_mask_char);
1478 free(in_check_mask_char);
1482 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);
1485 free(captured_char);
1486 free(in_check_value_char);
1488 retval = ERROR_JTAG_QUEUE_FAILED;
1495 void jtag_check_value_mask(scan_field_t *field, u8 *value, u8 *mask)
1497 assert(field->in_value != NULL);
1501 /* no checking to do */
1505 jtag_execute_queue_noclear();
1507 int retval=jtag_check_value_inner(field->in_value, value, mask, field->num_bits);
1508 jtag_set_error(retval);
1513 enum scan_type jtag_scan_type(const scan_command_t *cmd)
1518 for (i = 0; i < cmd->num_fields; i++)
1520 if (cmd->fields[i].in_value)
1522 if (cmd->fields[i].out_value)
1530 #ifndef HAVE_JTAG_MINIDRIVER_H
1531 /* add callback to end of queue */
1532 void jtag_add_callback4(jtag_callback_t callback, u8 *in, jtag_callback_data_t data1, jtag_callback_data_t data2, jtag_callback_data_t data3)
1534 struct jtag_callback_entry *entry=cmd_queue_alloc(sizeof(struct jtag_callback_entry));
1537 entry->callback=callback;
1543 if (jtag_callback_queue_head==NULL)
1545 jtag_callback_queue_head=entry;
1546 jtag_callback_queue_tail=entry;
1549 jtag_callback_queue_tail->next=entry;
1550 jtag_callback_queue_tail=entry;
1555 static int jtag_convert_to_callback4(u8 *in, jtag_callback_data_t data1, jtag_callback_data_t data2, jtag_callback_data_t data3)
1557 ((jtag_callback1_t)data1)(in);
1561 void jtag_add_callback(jtag_callback1_t callback, u8 *in)
1563 jtag_add_callback4(jtag_convert_to_callback4, in, (jtag_callback_data_t)callback, 0, 0);
1567 #ifndef HAVE_JTAG_MINIDRIVER_H
1569 int interface_jtag_execute_queue(void)
1575 LOG_ERROR("No JTAG interface configured yet. Issue 'init' command in startup scripts before communicating with targets.");
1579 retval = default_interface_jtag_execute_queue();
1581 if (retval == ERROR_OK)
1583 struct jtag_callback_entry *entry;
1584 for (entry=jtag_callback_queue_head; entry!=NULL; entry=entry->next)
1586 retval=entry->callback(entry->in, entry->data1, entry->data2, entry->data3);
1587 if (retval!=ERROR_OK)
1592 jtag_command_queue_reset();
1593 jtag_callback_queue_reset();
1599 int default_interface_jtag_execute_queue(void)
1601 return jtag->execute_queue();
1604 void jtag_execute_queue_noclear(void)
1606 /* each flush can take as much as 1-2ms on high bandwidth low latency interfaces.
1607 * E.g. a JTAG over TCP/IP or USB....
1609 jtag_flush_queue_count++;
1611 int retval=interface_jtag_execute_queue();
1612 /* we keep the first error */
1613 if ((jtag_error==ERROR_OK)&&(retval!=ERROR_OK))
1619 int jtag_execute_queue(void)
1622 jtag_execute_queue_noclear();
1624 jtag_error=ERROR_OK;
1628 int jtag_reset_callback(enum jtag_event event, void *priv)
1630 jtag_tap_t *tap = priv;
1634 if (event == JTAG_TRST_ASSERTED)
1636 buf_set_ones(tap->cur_instr, tap->ir_length);
1643 void jtag_sleep(u32 us)
1645 alive_sleep(us/1000);
1648 /* Try to examine chain layout according to IEEE 1149.1 §12
1650 int jtag_examine_chain(void)
1654 u8 idcode_buffer[JTAG_MAX_CHAIN_SIZE * 4];
1657 int device_count = 0;
1658 u8 zero_check = 0x0;
1659 u8 one_check = 0xff;
1662 field.num_bits = sizeof(idcode_buffer) * 8;
1663 field.out_value = idcode_buffer;
1665 field.in_value = idcode_buffer;
1670 for (i = 0; i < JTAG_MAX_CHAIN_SIZE; i++)
1672 buf_set_u32(idcode_buffer, i * 32, 32, 0x000000FF);
1675 jtag_add_plain_dr_scan(1, &field, TAP_RESET);
1676 jtag_execute_queue();
1678 for (i = 0; i < JTAG_MAX_CHAIN_SIZE * 4; i++)
1680 zero_check |= idcode_buffer[i];
1681 one_check &= idcode_buffer[i];
1684 /* if there wasn't a single non-zero bit or if all bits were one, the scan isn't valid */
1685 if ((zero_check == 0x00) || (one_check == 0xff))
1687 LOG_ERROR("JTAG communication failure, check connection, JTAG interface, target power etc.");
1688 return ERROR_JTAG_INIT_FAILED;
1691 /* point at the 1st tap */
1692 tap = jtag_NextEnabledTap(NULL);
1694 LOG_ERROR("JTAG: No taps enabled?");
1695 return ERROR_JTAG_INIT_FAILED;
1698 for (bit_count = 0; bit_count < (JTAG_MAX_CHAIN_SIZE * 32) - 31;)
1700 u32 idcode = buf_get_u32(idcode_buffer, bit_count, 32);
1701 if ((idcode & 1) == 0)
1703 /* LSB must not be 0, this indicates a device in bypass */
1704 LOG_WARNING("Tap/Device does not have IDCODE");
1715 /* some devices, such as AVR will output all 1's instead of TDI
1716 input value at end of chain. */
1717 if ((idcode == 0x000000FF)||(idcode == 0xFFFFFFFF))
1720 /* End of chain (invalid manufacturer ID)
1722 * The JTAG examine is the very first thing that happens
1724 * A single JTAG device requires only 64 bits to be read back correctly.
1726 * The code below adds a check that the rest of the data scanned (640 bits)
1727 * are all as expected. This helps diagnose/catch problems with the JTAG chain
1729 * earlier and gives more helpful/explicit error messages.
1731 for (bit_count += 32; bit_count < (JTAG_MAX_CHAIN_SIZE * 32) - 31;bit_count += 32)
1733 idcode = buf_get_u32(idcode_buffer, bit_count, 32);
1734 if (unexpected||((idcode != 0x000000FF)&&(idcode != 0xFFFFFFFF)))
1736 LOG_WARNING("Unexpected idcode after end of chain! %d 0x%08x", bit_count, idcode);
1744 #define EXTRACT_MFG(X) (((X) & 0xffe) >> 1)
1745 manufacturer = EXTRACT_MFG(idcode);
1746 #define EXTRACT_PART(X) (((X) & 0xffff000) >> 12)
1747 part = EXTRACT_PART(idcode);
1748 #define EXTRACT_VER(X) (((X) & 0xf0000000) >> 28)
1749 version = EXTRACT_VER(idcode);
1751 LOG_INFO("JTAG tap: %s tap/device found: 0x%8.8x (Manufacturer: 0x%3.3x, Part: 0x%4.4x, Version: 0x%1.1x)",
1752 ((tap != NULL) ? (tap->dotted_name) : "(not-named)"),
1753 idcode, manufacturer, part, version);
1759 tap->idcode = idcode;
1761 if (tap->expected_ids_cnt > 0) {
1762 /* Loop over the expected identification codes and test for a match */
1764 for (ii = 0; ii < tap->expected_ids_cnt; ii++) {
1765 if( tap->idcode == tap->expected_ids[ii] ){
1770 /* If none of the expected ids matched, log an error */
1771 if (ii == tap->expected_ids_cnt) {
1772 LOG_ERROR("JTAG tap: %s got: 0x%08x (mfg: 0x%3.3x, part: 0x%4.4x, ver: 0x%1.1x)",
1775 EXTRACT_MFG( tap->idcode ),
1776 EXTRACT_PART( tap->idcode ),
1777 EXTRACT_VER( tap->idcode ) );
1778 for (ii = 0; ii < tap->expected_ids_cnt; ii++) {
1779 LOG_ERROR("JTAG tap: %s expected %hhu of %hhu: 0x%08x (mfg: 0x%3.3x, part: 0x%4.4x, ver: 0x%1.1x)",
1782 tap->expected_ids_cnt,
1783 tap->expected_ids[ii],
1784 EXTRACT_MFG( tap->expected_ids[ii] ),
1785 EXTRACT_PART( tap->expected_ids[ii] ),
1786 EXTRACT_VER( tap->expected_ids[ii] ) );
1789 return ERROR_JTAG_INIT_FAILED;
1791 LOG_INFO("JTAG Tap/device matched");
1795 LOG_INFO("JTAG TAP ID: 0x%08x - Unknown - please report (A) chipname and (B) idcode to the openocd project",
1799 tap = jtag_NextEnabledTap(tap);
1804 /* see if number of discovered devices matches configuration */
1805 if (device_count != jtag_NumEnabledTaps())
1807 LOG_ERROR("number of discovered devices in JTAG chain (%i) doesn't match (enabled) configuration (%i), total taps: %d",
1808 device_count, jtag_NumEnabledTaps(), jtag_NumTotalTaps());
1809 LOG_ERROR("check the config file and ensure proper JTAG communication (connections, speed, ...)");
1810 return ERROR_JTAG_INIT_FAILED;
1816 int jtag_validate_chain(void)
1819 int total_ir_length = 0;
1825 total_ir_length = 0;
1827 tap = jtag_NextEnabledTap(tap);
1831 total_ir_length += tap->ir_length;
1834 total_ir_length += 2;
1835 ir_test = malloc(CEIL(total_ir_length, 8));
1836 buf_set_ones(ir_test, total_ir_length);
1839 field.num_bits = total_ir_length;
1840 field.out_value = ir_test;
1841 field.in_value = ir_test;
1844 jtag_add_plain_ir_scan(1, &field, TAP_RESET);
1845 jtag_execute_queue();
1851 tap = jtag_NextEnabledTap(tap);
1856 val = buf_get_u32(ir_test, chain_pos, 2);
1859 char *cbuf = buf_to_str(ir_test, total_ir_length, 16);
1860 LOG_ERROR("Could not validate JTAG scan chain, IR mismatch, scan returned 0x%s. tap=%s pos=%d expected 0x1 got %0x", cbuf, jtag_tap_name(tap), chain_pos, val);
1863 return ERROR_JTAG_INIT_FAILED;
1865 chain_pos += tap->ir_length;
1868 val = buf_get_u32(ir_test, chain_pos, 2);
1871 char *cbuf = buf_to_str(ir_test, total_ir_length, 16);
1872 LOG_ERROR("Could not validate end of JTAG scan chain, IR mismatch, scan returned 0x%s. pos=%d expected 0x3 got %0x", cbuf, chain_pos, val);
1875 return ERROR_JTAG_INIT_FAILED;
1883 enum jtag_tap_cfg_param {
1887 static Jim_Nvp nvp_config_opts[] = {
1888 { .name = "-event", .value = JCFG_EVENT },
1890 { .name = NULL, .value = -1 }
1893 static int jtag_tap_configure_cmd( Jim_GetOptInfo *goi, jtag_tap_t * tap)
1899 /* parse config or cget options */
1900 while (goi->argc > 0) {
1901 Jim_SetEmptyResult (goi->interp);
1903 e = Jim_GetOpt_Nvp(goi, nvp_config_opts, &n);
1905 Jim_GetOpt_NvpUnknown(goi, nvp_config_opts, 0);
1911 if (goi->argc == 0) {
1912 Jim_WrongNumArgs( goi->interp, goi->argc, goi->argv, "-event ?event-name? ..." );
1916 e = Jim_GetOpt_Nvp( goi, nvp_jtag_tap_event, &n );
1918 Jim_GetOpt_NvpUnknown(goi, nvp_jtag_tap_event, 1);
1922 if (goi->isconfigure) {
1923 if (goi->argc != 1) {
1924 Jim_WrongNumArgs(goi->interp, goi->argc, goi->argv, "-event ?event-name? ?EVENT-BODY?");
1928 if (goi->argc != 0) {
1929 Jim_WrongNumArgs(goi->interp, goi->argc, goi->argv, "-event ?event-name?");
1935 jtag_tap_event_action_t *jteap;
1937 jteap = tap->event_action;
1938 /* replace existing? */
1940 if (jteap->event == (enum jtag_tap_event)n->value) {
1943 jteap = jteap->next;
1946 if (goi->isconfigure) {
1947 if (jteap == NULL) {
1949 jteap = calloc(1, sizeof (*jteap));
1951 jteap->event = n->value;
1952 Jim_GetOpt_Obj( goi, &o);
1954 Jim_DecrRefCount(interp, jteap->body);
1956 jteap->body = Jim_DuplicateObj(goi->interp, o);
1957 Jim_IncrRefCount(jteap->body);
1959 /* add to head of event list */
1960 jteap->next = tap->event_action;
1961 tap->event_action = jteap;
1962 Jim_SetEmptyResult(goi->interp);
1965 if (jteap == NULL) {
1966 Jim_SetEmptyResult(goi->interp);
1968 Jim_SetResult(goi->interp, Jim_DuplicateObj(goi->interp, jteap->body));
1975 } /* while (goi->argc) */
1980 static int jim_newtap_cmd( Jim_GetOptInfo *goi )
1990 const Jim_Nvp opts[] = {
1991 #define NTAP_OPT_IRLEN 0
1992 { .name = "-irlen" , .value = NTAP_OPT_IRLEN },
1993 #define NTAP_OPT_IRMASK 1
1994 { .name = "-irmask" , .value = NTAP_OPT_IRMASK },
1995 #define NTAP_OPT_IRCAPTURE 2
1996 { .name = "-ircapture" , .value = NTAP_OPT_IRCAPTURE },
1997 #define NTAP_OPT_ENABLED 3
1998 { .name = "-enable" , .value = NTAP_OPT_ENABLED },
1999 #define NTAP_OPT_DISABLED 4
2000 { .name = "-disable" , .value = NTAP_OPT_DISABLED },
2001 #define NTAP_OPT_EXPECTED_ID 5
2002 { .name = "-expected-id" , .value = NTAP_OPT_EXPECTED_ID },
2003 { .name = NULL , .value = -1 },
2006 pTap = malloc( sizeof(jtag_tap_t) );
2007 memset( pTap, 0, sizeof(*pTap) );
2009 Jim_SetResult_sprintf( goi->interp, "no memory");
2013 * we expect CHIP + TAP + OPTIONS
2015 if( goi->argc < 3 ){
2016 Jim_SetResult_sprintf(goi->interp, "Missing CHIP TAP OPTIONS ....");
2019 Jim_GetOpt_String( goi, &cp, NULL );
2020 pTap->chip = strdup(cp);
2022 Jim_GetOpt_String( goi, &cp, NULL );
2023 pTap->tapname = strdup(cp);
2025 /* name + dot + name + null */
2026 x = strlen(pTap->chip) + 1 + strlen(pTap->tapname) + 1;
2028 sprintf( cp, "%s.%s", pTap->chip, pTap->tapname );
2029 pTap->dotted_name = cp;
2031 LOG_DEBUG("Creating New Tap, Chip: %s, Tap: %s, Dotted: %s, %d params",
2032 pTap->chip, pTap->tapname, pTap->dotted_name, goi->argc);
2034 /* default is enabled */
2037 /* deal with options */
2038 #define NTREQ_IRLEN 1
2039 #define NTREQ_IRCAPTURE 2
2040 #define NTREQ_IRMASK 4
2042 /* clear them as we find them */
2043 reqbits = (NTREQ_IRLEN | NTREQ_IRCAPTURE | NTREQ_IRMASK);
2046 e = Jim_GetOpt_Nvp( goi, opts, &n );
2048 Jim_GetOpt_NvpUnknown( goi, opts, 0 );
2051 LOG_DEBUG("Processing option: %s", n->name );
2053 case NTAP_OPT_ENABLED:
2056 case NTAP_OPT_DISABLED:
2059 case NTAP_OPT_EXPECTED_ID:
2061 u32 *new_expected_ids;
2063 e = Jim_GetOpt_Wide( goi, &w );
2065 Jim_SetResult_sprintf(goi->interp, "option: %s bad parameter", n->name);
2069 new_expected_ids = malloc(sizeof(u32) * (pTap->expected_ids_cnt + 1));
2070 if (new_expected_ids == NULL) {
2071 Jim_SetResult_sprintf( goi->interp, "no memory");
2075 memcpy(new_expected_ids, pTap->expected_ids, sizeof(u32) * pTap->expected_ids_cnt);
2077 new_expected_ids[pTap->expected_ids_cnt] = w;
2079 free(pTap->expected_ids);
2080 pTap->expected_ids = new_expected_ids;
2081 pTap->expected_ids_cnt++;
2084 case NTAP_OPT_IRLEN:
2085 case NTAP_OPT_IRMASK:
2086 case NTAP_OPT_IRCAPTURE:
2087 e = Jim_GetOpt_Wide( goi, &w );
2089 Jim_SetResult_sprintf( goi->interp, "option: %s bad parameter", n->name );
2092 if( (w < 0) || (w > 0xffff) ){
2094 Jim_SetResult_sprintf( goi->interp, "option: %s - wacky value: %d (0x%x)",
2095 n->name, (int)(w), (int)(w));
2099 case NTAP_OPT_IRLEN:
2100 pTap->ir_length = w;
2101 reqbits &= (~(NTREQ_IRLEN));
2103 case NTAP_OPT_IRMASK:
2104 pTap->ir_capture_mask = w;
2105 reqbits &= (~(NTREQ_IRMASK));
2107 case NTAP_OPT_IRCAPTURE:
2108 pTap->ir_capture_value = w;
2109 reqbits &= (~(NTREQ_IRCAPTURE));
2112 } /* switch(n->value) */
2113 } /* while( goi->argc ) */
2115 /* Did we get all the options? */
2118 Jim_SetResult_sprintf( goi->interp,
2119 "newtap: %s missing required parameters",
2121 /* TODO: Tell user what is missing :-( */
2122 /* no memory leaks pelase */
2123 free(((void *)(pTap->expected_ids)));
2124 free(((void *)(pTap->chip)));
2125 free(((void *)(pTap->tapname)));
2126 free(((void *)(pTap->dotted_name)));
2127 free(((void *)(pTap)));
2131 pTap->expected = malloc( pTap->ir_length );
2132 pTap->expected_mask = malloc( pTap->ir_length );
2133 pTap->cur_instr = malloc( pTap->ir_length );
2135 buf_set_u32( pTap->expected,
2138 pTap->ir_capture_value );
2139 buf_set_u32( pTap->expected_mask,
2142 pTap->ir_capture_mask );
2143 buf_set_ones( pTap->cur_instr,
2148 jtag_register_event_callback(jtag_reset_callback, pTap );
2150 ppTap = &(jtag_all_taps);
2151 while( (*ppTap) != NULL ){
2152 ppTap = &((*ppTap)->next_tap);
2156 static int n_taps = 0;
2157 pTap->abs_chain_position = n_taps++;
2159 LOG_DEBUG( "Created Tap: %s @ abs position %d, irlen %d, capture: 0x%x mask: 0x%x",
2160 (*ppTap)->dotted_name,
2161 (*ppTap)->abs_chain_position,
2162 (*ppTap)->ir_length,
2163 (*ppTap)->ir_capture_value,
2164 (*ppTap)->ir_capture_mask );
2169 static int jim_jtag_command( Jim_Interp *interp, int argc, Jim_Obj *const *argv )
2175 struct command_context_s *context;
2179 JTAG_CMD_INIT_RESET,
2182 JTAG_CMD_TAPDISABLE,
2183 JTAG_CMD_TAPISENABLED,
2188 const Jim_Nvp jtag_cmds[] = {
2189 { .name = "interface" , .value = JTAG_CMD_INTERFACE },
2190 { .name = "arp_init-reset", .value = JTAG_CMD_INIT_RESET },
2191 { .name = "newtap" , .value = JTAG_CMD_NEWTAP },
2192 { .name = "tapisenabled" , .value = JTAG_CMD_TAPISENABLED },
2193 { .name = "tapenable" , .value = JTAG_CMD_TAPENABLE },
2194 { .name = "tapdisable" , .value = JTAG_CMD_TAPDISABLE },
2195 { .name = "configure" , .value = JTAG_CMD_CONFIGURE },
2196 { .name = "cget" , .value = JTAG_CMD_CGET },
2198 { .name = NULL, .value = -1 },
2201 context = Jim_GetAssocData(interp, "context");
2202 /* go past the command */
2203 Jim_GetOpt_Setup( &goi, interp, argc-1, argv+1 );
2205 e = Jim_GetOpt_Nvp( &goi, jtag_cmds, &n );
2207 Jim_GetOpt_NvpUnknown( &goi, jtag_cmds, 0 );
2210 Jim_SetEmptyResult( goi.interp );
2212 case JTAG_CMD_INTERFACE:
2213 /* return the name of the interface */
2214 /* TCL code might need to know the exact type... */
2215 /* FUTURE: we allow this as a means to "set" the interface. */
2216 if( goi.argc != 0 ){
2217 Jim_WrongNumArgs( goi.interp, 1, goi.argv-1, "(no params)");
2220 Jim_SetResultString( goi.interp, jtag_interface->name, -1 );
2222 case JTAG_CMD_INIT_RESET:
2223 if( goi.argc != 0 ){
2224 Jim_WrongNumArgs( goi.interp, 1, goi.argv-1, "(no params)");
2227 e = jtag_init_reset(context);
2228 if( e != ERROR_OK ){
2229 Jim_SetResult_sprintf( goi.interp, "error: %d", e);
2233 case JTAG_CMD_NEWTAP:
2234 return jim_newtap_cmd( &goi );
2236 case JTAG_CMD_TAPISENABLED:
2237 case JTAG_CMD_TAPENABLE:
2238 case JTAG_CMD_TAPDISABLE:
2239 if( goi.argc != 1 ){
2240 Jim_SetResultString( goi.interp, "Too many parameters",-1 );
2246 t = jtag_TapByJimObj( goi.interp, goi.argv[0] );
2251 case JTAG_CMD_TAPISENABLED:
2254 case JTAG_CMD_TAPENABLE:
2255 jtag_tap_handle_event( t, JTAG_TAP_EVENT_ENABLE);
2259 case JTAG_CMD_TAPDISABLE:
2260 jtag_tap_handle_event( t, JTAG_TAP_EVENT_DISABLE);
2265 Jim_SetResult( goi.interp, Jim_NewIntObj( goi.interp, e ) );
2272 Jim_WrongNumArgs( goi.interp, 0, NULL, "?tap-name? -option ...");
2279 Jim_GetOpt_Obj(&goi, &o);
2280 t = jtag_TapByJimObj( goi.interp, o );
2285 goi.isconfigure = 0;
2286 return jtag_tap_configure_cmd( &goi, t);
2290 case JTAG_CMD_CONFIGURE:
2292 Jim_WrongNumArgs( goi.interp, 0, NULL, "?tap-name? -option ?VALUE? ...");
2299 Jim_GetOpt_Obj(&goi, &o);
2300 t = jtag_TapByJimObj( goi.interp, o );
2305 goi.isconfigure = 1;
2306 return jtag_tap_configure_cmd( &goi, t);
2313 int jtag_register_commands(struct command_context_s *cmd_ctx)
2315 register_jim( cmd_ctx, "jtag", jim_jtag_command, "perform jtag tap actions");
2317 register_command(cmd_ctx, NULL, "interface", handle_interface_command,
2318 COMMAND_CONFIG, "try to configure interface");
2319 register_command(cmd_ctx, NULL, "jtag_speed", handle_jtag_speed_command,
2320 COMMAND_ANY, "(DEPRECATED) set jtag speed (if supported)");
2321 register_command(cmd_ctx, NULL, "jtag_khz", handle_jtag_khz_command,
2322 COMMAND_ANY, "set maximum jtag speed (if supported); "
2323 "parameter is maximum khz, or 0 for adaptive clocking (RTCK).");
2324 register_command(cmd_ctx, NULL, "jtag_device", handle_jtag_device_command,
2325 COMMAND_CONFIG, "(DEPRECATED) jtag_device <ir_length> <ir_expected> <ir_mask>");
2326 register_command(cmd_ctx, NULL, "reset_config", handle_reset_config_command,
2328 "[none/trst_only/srst_only/trst_and_srst] [srst_pulls_trst/trst_pulls_srst] [combined/separate] [trst_push_pull/trst_open_drain] [srst_push_pull/srst_open_drain]");
2329 register_command(cmd_ctx, NULL, "jtag_nsrst_delay", handle_jtag_nsrst_delay_command,
2330 COMMAND_ANY, "jtag_nsrst_delay <ms> - delay after deasserting srst in ms");
2331 register_command(cmd_ctx, NULL, "jtag_ntrst_delay", handle_jtag_ntrst_delay_command,
2332 COMMAND_ANY, "jtag_ntrst_delay <ms> - delay after deasserting trst in ms");
2334 register_command(cmd_ctx, NULL, "scan_chain", handle_scan_chain_command,
2335 COMMAND_EXEC, "print current scan chain configuration");
2337 register_command(cmd_ctx, NULL, "endstate", handle_endstate_command,
2338 COMMAND_EXEC, "finish JTAG operations in <tap_state>");
2339 register_command(cmd_ctx, NULL, "jtag_reset", handle_jtag_reset_command,
2340 COMMAND_EXEC, "toggle reset lines <trst> <srst>");
2341 register_command(cmd_ctx, NULL, "runtest", handle_runtest_command,
2342 COMMAND_EXEC, "move to Run-Test/Idle, and execute <num_cycles>");
2343 register_command(cmd_ctx, NULL, "irscan", handle_irscan_command,
2344 COMMAND_EXEC, "execute IR scan <device> <instr> [dev2] [instr2] ...");
2345 register_jim(cmd_ctx, "drscan", Jim_Command_drscan, "execute DR scan <device> <num_bits> <value> <num_bits1> <value2> ...");
2346 register_jim(cmd_ctx, "flush_count", Jim_Command_flush_count, "returns number of times the JTAG queue has been flushed");
2348 register_command(cmd_ctx, NULL, "verify_ircapture", handle_verify_ircapture_command,
2349 COMMAND_ANY, "verify value captured during Capture-IR <enable|disable>");
2350 register_command(cmd_ctx, NULL, "verify_jtag", handle_verify_jtag_command,
2351 COMMAND_ANY, "verify value capture <enable|disable>");
2352 register_command(cmd_ctx, NULL, "tms_sequence", handle_tms_sequence_command,
2353 COMMAND_ANY, "choose short(default) or long tms_sequence <short|long>");
2357 int jtag_interface_init(struct command_context_s *cmd_ctx)
2362 if (!jtag_interface)
2364 /* nothing was previously specified by "interface" command */
2365 LOG_ERROR("JTAG interface has to be specified, see \"interface\" command");
2366 return ERROR_JTAG_INVALID_INTERFACE;
2370 jtag_interface->khz(speed_khz, &jtag_speed);
2374 if (jtag_interface->init() != ERROR_OK)
2375 return ERROR_JTAG_INIT_FAILED;
2377 jtag = jtag_interface;
2381 static int jtag_init_inner(struct command_context_s *cmd_ctx)
2386 LOG_DEBUG("Init JTAG chain");
2388 tap = jtag_NextEnabledTap(NULL);
2390 LOG_ERROR("There are no enabled taps?");
2391 return ERROR_JTAG_INIT_FAILED;
2395 if ((retval=jtag_execute_queue())!=ERROR_OK)
2398 /* examine chain first, as this could discover the real chain layout */
2399 if (jtag_examine_chain() != ERROR_OK)
2401 LOG_ERROR("trying to validate configured JTAG chain anyway...");
2404 if (jtag_validate_chain() != ERROR_OK)
2406 LOG_WARNING("Could not validate JTAG chain, continuing anyway...");
2412 int jtag_interface_quit(void)
2414 if (!jtag || !jtag->quit)
2417 // close the JTAG interface
2418 int result = jtag->quit();
2419 if (ERROR_OK != result)
2420 LOG_ERROR("failed: %d", result);
2426 int jtag_init_reset(struct command_context_s *cmd_ctx)
2430 if ((retval=jtag_interface_init(cmd_ctx)) != ERROR_OK)
2433 LOG_DEBUG("Trying to bring the JTAG controller to life by asserting TRST / RESET");
2435 /* Reset can happen after a power cycle.
2437 * Ideally we would only assert TRST or run RESET before the target reset.
2439 * However w/srst_pulls_trst, trst is asserted together with the target
2440 * reset whether we want it or not.
2442 * NB! Some targets have JTAG circuitry disabled until a
2443 * trst & srst has been asserted.
2445 * NB! here we assume nsrst/ntrst delay are sufficient!
2447 * NB! order matters!!!! srst *can* disconnect JTAG circuitry
2450 jtag_add_reset(1, 0); /* RESET or TRST */
2451 if (jtag_reset_config & RESET_HAS_SRST)
2453 jtag_add_reset(1, 1);
2454 if ((jtag_reset_config & RESET_SRST_PULLS_TRST)==0)
2455 jtag_add_reset(0, 1);
2457 jtag_add_reset(0, 0);
2458 if ((retval = jtag_execute_queue()) != ERROR_OK)
2461 /* Check that we can communication on the JTAG chain + eventually we want to
2462 * be able to perform enumeration only after OpenOCD has started
2463 * telnet and GDB server
2465 * That would allow users to more easily perform any magic they need to before
2468 return jtag_init_inner(cmd_ctx);
2471 int jtag_init(struct command_context_s *cmd_ctx)
2474 if ((retval=jtag_interface_init(cmd_ctx)) != ERROR_OK)
2476 if (jtag_init_inner(cmd_ctx)==ERROR_OK)
2480 return jtag_init_reset(cmd_ctx);
2483 static int default_khz(int khz, int *jtag_speed)
2485 LOG_ERROR("Translation from khz to jtag_speed not implemented");
2489 static int default_speed_div(int speed, int *khz)
2491 LOG_ERROR("Translation from jtag_speed to khz not implemented");
2495 static int default_power_dropout(int *dropout)
2497 *dropout=0; /* by default we can't detect power dropout */
2501 static int default_srst_asserted(int *srst_asserted)
2503 *srst_asserted=0; /* by default we can't detect srst asserted */
2507 static int handle_interface_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2512 /* check whether the interface is already configured */
2515 LOG_WARNING("Interface already configured, ignoring");
2519 /* interface name is a mandatory argument */
2520 if (argc < 1 || args[0][0] == '\0')
2522 return ERROR_COMMAND_SYNTAX_ERROR;
2525 for (i=0; jtag_interfaces[i]; i++)
2527 if (strcmp(args[0], jtag_interfaces[i]->name) == 0)
2529 if ((retval = jtag_interfaces[i]->register_commands(cmd_ctx)) != ERROR_OK)
2534 jtag_interface = jtag_interfaces[i];
2536 if (jtag_interface->khz == NULL)
2538 jtag_interface->khz = default_khz;
2540 if (jtag_interface->speed_div == NULL)
2542 jtag_interface->speed_div = default_speed_div;
2544 if (jtag_interface->power_dropout == NULL)
2546 jtag_interface->power_dropout = default_power_dropout;
2548 if (jtag_interface->srst_asserted == NULL)
2550 jtag_interface->srst_asserted = default_srst_asserted;
2557 /* no valid interface was found (i.e. the configuration option,
2558 * didn't match one of the compiled-in interfaces
2560 LOG_ERROR("No valid jtag interface found (%s)", args[0]);
2561 LOG_ERROR("compiled-in jtag interfaces:");
2562 for (i = 0; jtag_interfaces[i]; i++)
2564 LOG_ERROR("%i: %s", i, jtag_interfaces[i]->name);
2567 return ERROR_JTAG_INVALID_INTERFACE;
2570 static int handle_jtag_device_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2574 Jim_Obj *newargs[ 10 ];
2577 * argv[-1] = command
2578 * argv[ 0] = ir length
2579 * argv[ 1] = ir capture
2580 * argv[ 2] = ir mask
2581 * argv[ 3] = not actually used by anything but in the docs
2585 command_print( cmd_ctx, "OLD DEPRECATED SYNTAX: Please use the NEW syntax");
2588 command_print( cmd_ctx, "OLD SYNTAX: DEPRECATED - translating to new syntax");
2589 command_print( cmd_ctx, "jtag newtap CHIP TAP -irlen %s -ircapture %s -irvalue %s",
2593 command_print( cmd_ctx, "Example: STM32 has 2 taps, the cortexM3(len4) + boundaryscan(len5)");
2594 command_print( cmd_ctx, "jtag newtap stm32 cortexm3 ....., thus creating the tap: \"stm32.cortexm3\"");
2595 command_print( cmd_ctx, "jtag newtap stm32 boundary ....., and the tap: \"stm32.boundary\"");
2596 command_print( cmd_ctx, "And then refer to the taps by the dotted name.");
2598 newargs[0] = Jim_NewStringObj( interp, "jtag", -1 );
2599 newargs[1] = Jim_NewStringObj( interp, "newtap", -1 );
2600 sprintf( buf, "chip%d", jtag_NumTotalTaps() );
2601 newargs[2] = Jim_NewStringObj( interp, buf, -1 );
2602 sprintf( buf, "tap%d", jtag_NumTotalTaps() );
2603 newargs[3] = Jim_NewStringObj( interp, buf, -1 );
2604 newargs[4] = Jim_NewStringObj( interp, "-irlen", -1 );
2605 newargs[5] = Jim_NewStringObj( interp, args[0], -1 );
2606 newargs[6] = Jim_NewStringObj( interp, "-ircapture", -1 );
2607 newargs[7] = Jim_NewStringObj( interp, args[1], -1 );
2608 newargs[8] = Jim_NewStringObj( interp, "-irmask", -1 );
2609 newargs[9] = Jim_NewStringObj( interp, args[2], -1 );
2611 command_print( cmd_ctx, "NEW COMMAND:");
2612 sprintf( buf, "%s %s %s %s %s %s %s %s %s %s",
2613 Jim_GetString( newargs[0], NULL ),
2614 Jim_GetString( newargs[1], NULL ),
2615 Jim_GetString( newargs[2], NULL ),
2616 Jim_GetString( newargs[3], NULL ),
2617 Jim_GetString( newargs[4], NULL ),
2618 Jim_GetString( newargs[5], NULL ),
2619 Jim_GetString( newargs[6], NULL ),
2620 Jim_GetString( newargs[7], NULL ),
2621 Jim_GetString( newargs[8], NULL ),
2622 Jim_GetString( newargs[9], NULL ) );
2624 e = jim_jtag_command( interp, 10, newargs );
2626 command_print( cmd_ctx, "%s", Jim_GetString( Jim_GetResult(interp), NULL ) );
2631 static int handle_scan_chain_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2635 tap = jtag_all_taps;
2636 command_print(cmd_ctx, " TapName | Enabled | IdCode Expected IrLen IrCap IrMask Instr ");
2637 command_print(cmd_ctx, "---|--------------------|---------|------------|------------|------|------|------|---------");
2640 u32 expected, expected_mask, cur_instr, ii;
2641 expected = buf_get_u32(tap->expected, 0, tap->ir_length);
2642 expected_mask = buf_get_u32(tap->expected_mask, 0, tap->ir_length);
2643 cur_instr = buf_get_u32(tap->cur_instr, 0, tap->ir_length);
2645 command_print(cmd_ctx,
2646 "%2d | %-18s | %c | 0x%08x | 0x%08x | 0x%02x | 0x%02x | 0x%02x | 0x%02x",
2647 tap->abs_chain_position,
2649 tap->enabled ? 'Y' : 'n',
2651 (tap->expected_ids_cnt > 0 ? tap->expected_ids[0] : 0),
2657 for (ii = 1; ii < tap->expected_ids_cnt; ii++) {
2658 command_print(cmd_ctx, " | | | | 0x%08x | | | | ",
2659 tap->expected_ids[ii]);
2662 tap = tap->next_tap;
2668 static int handle_reset_config_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2674 return ERROR_COMMAND_SYNTAX_ERROR;
2676 /* Original versions cared about the order of these tokens:
2677 * reset_config signals [combination [trst_type [srst_type]]]
2678 * They also clobbered the previous configuration even on error.
2680 * Here we don't care about the order, and only change values
2681 * which have been explicitly specified.
2683 for (; argc; argc--, args++) {
2688 m = RESET_HAS_TRST | RESET_HAS_SRST;
2689 if (strcmp(*args, "none") == 0)
2691 else if (strcmp(*args, "trst_only") == 0)
2692 tmp = RESET_HAS_TRST;
2693 else if (strcmp(*args, "srst_only") == 0)
2694 tmp = RESET_HAS_SRST;
2695 else if (strcmp(*args, "trst_and_srst") == 0)
2696 tmp = RESET_HAS_TRST | RESET_HAS_SRST;
2700 LOG_ERROR("extra reset_config %s spec (%s)",
2702 return ERROR_INVALID_ARGUMENTS;
2707 /* combination (options for broken wiring) */
2708 m = RESET_SRST_PULLS_TRST | RESET_TRST_PULLS_SRST;
2709 if (strcmp(*args, "separate") == 0)
2710 /* separate reset lines - default */;
2711 else if (strcmp(*args, "srst_pulls_trst") == 0)
2712 tmp |= RESET_SRST_PULLS_TRST;
2713 else if (strcmp(*args, "trst_pulls_srst") == 0)
2714 tmp |= RESET_TRST_PULLS_SRST;
2715 else if (strcmp(*args, "combined") == 0)
2716 tmp |= RESET_SRST_PULLS_TRST | RESET_TRST_PULLS_SRST;
2720 LOG_ERROR("extra reset_config %s spec (%s)",
2721 "combination", *args);
2722 return ERROR_INVALID_ARGUMENTS;
2727 /* trst_type (NOP without HAS_TRST) */
2728 m = RESET_TRST_OPEN_DRAIN;
2729 if (strcmp(*args, "trst_open_drain") == 0)
2730 tmp |= RESET_TRST_OPEN_DRAIN;
2731 else if (strcmp(*args, "trst_push_pull") == 0)
2732 /* push/pull from adapter - default */;
2736 LOG_ERROR("extra reset_config %s spec (%s)",
2737 "trst_type", *args);
2738 return ERROR_INVALID_ARGUMENTS;
2743 /* srst_type (NOP without HAS_SRST) */
2744 m |= RESET_SRST_PUSH_PULL;
2745 if (strcmp(*args, "srst_push_pull") == 0)
2746 tmp |= RESET_SRST_PUSH_PULL;
2747 else if (strcmp(*args, "srst_open_drain") == 0)
2748 /* open drain from adapter - default */;
2752 LOG_ERROR("extra reset_config %s spec (%s)",
2753 "srst_type", *args);
2754 return ERROR_INVALID_ARGUMENTS;
2759 /* caller provided nonsense; fail */
2760 LOG_ERROR("unknown reset_config flag (%s)", *args);
2761 return ERROR_INVALID_ARGUMENTS;
2764 /* Remember the bits which were specified (mask)
2765 * and their new values (new_cfg).
2771 /* clear previous values of those bits, save new values */
2772 jtag_reset_config &= ~mask;
2773 jtag_reset_config |= new_cfg;
2778 static int handle_jtag_nsrst_delay_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2782 LOG_ERROR("jtag_nsrst_delay <ms> command takes one required argument");
2787 jtag_nsrst_delay = strtoul(args[0], NULL, 0);
2793 static int handle_jtag_ntrst_delay_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2797 LOG_ERROR("jtag_ntrst_delay <ms> command takes one required argument");
2802 jtag_ntrst_delay = strtoul(args[0], NULL, 0);
2808 static int handle_jtag_speed_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2810 int retval=ERROR_OK;
2814 LOG_DEBUG("handle jtag speed");
2817 cur_speed = jtag_speed = strtoul(args[0], NULL, 0);
2819 /* this command can be called during CONFIG,
2820 * in which case jtag isn't initialized */
2823 retval=jtag->speed(cur_speed);
2825 } else if (argc == 0)
2829 return ERROR_COMMAND_SYNTAX_ERROR;
2831 command_print(cmd_ctx, "jtag_speed: %d", jtag_speed);
2836 static int handle_jtag_khz_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2838 int retval=ERROR_OK;
2839 LOG_DEBUG("handle jtag khz");
2843 speed_khz = strtoul(args[0], NULL, 0);
2847 LOG_DEBUG("have interface set up");
2849 if ((retval=jtag->khz(speed_khz, &speed_div1))!=ERROR_OK)
2855 cur_speed = jtag_speed = speed_div1;
2857 retval=jtag->speed(cur_speed);
2866 return ERROR_COMMAND_SYNTAX_ERROR;
2871 if ((retval=jtag->speed_div(jtag_speed, &speed_khz))!=ERROR_OK)
2877 command_print(cmd_ctx, "RCLK - adaptive");
2880 command_print(cmd_ctx, "%d kHz", speed_khz);
2886 static int handle_endstate_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2892 return ERROR_COMMAND_SYNTAX_ERROR;
2896 state = tap_state_by_name( args[0] );
2898 command_print( cmd_ctx, "Invalid state name: %s\n", args[0] );
2899 return ERROR_COMMAND_SYNTAX_ERROR;
2901 jtag_add_end_state(state);
2902 jtag_execute_queue();
2904 command_print(cmd_ctx, "current endstate: %s", tap_state_name(cmd_queue_end_state));
2909 static int handle_jtag_reset_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2916 return ERROR_COMMAND_SYNTAX_ERROR;
2919 if (args[0][0] == '1')
2921 else if (args[0][0] == '0')
2925 return ERROR_COMMAND_SYNTAX_ERROR;
2928 if (args[1][0] == '1')
2930 else if (args[1][0] == '0')
2934 return ERROR_COMMAND_SYNTAX_ERROR;
2937 if (jtag_interface_init(cmd_ctx) != ERROR_OK)
2938 return ERROR_JTAG_INIT_FAILED;
2940 jtag_add_reset(trst, srst);
2941 jtag_execute_queue();
2946 static int handle_runtest_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2950 return ERROR_COMMAND_SYNTAX_ERROR;
2953 jtag_add_runtest(strtol(args[0], NULL, 0), TAP_INVALID);
2954 jtag_execute_queue();
2961 * For "irscan" or "drscan" commands, the "end" (really, "next") state
2962 * should be stable ... and *NOT* a shift state, otherwise free-running
2963 * jtag clocks could change the values latched by the update state.
2965 static bool scan_is_safe(tap_state_t state)
2980 static int handle_irscan_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2983 scan_field_t *fields;
2985 tap_state_t endstate;
2987 if ((argc < 2) || (argc % 2))
2989 return ERROR_COMMAND_SYNTAX_ERROR;
2992 /* optional "-endstate" "statename" at the end of the arguments,
2993 * so that e.g. IRPAUSE can let us load the data register before
2994 * entering RUN/IDLE to execute the instruction we load here.
2996 endstate = TAP_IDLE;
2999 /* have at least one pair of numbers. */
3000 /* is last pair the magic text? */
3001 if( 0 == strcmp( "-endstate", args[ argc - 2 ] ) ){
3004 cpA = args[ argc-1 ];
3005 for( endstate = 0 ; endstate < TAP_NUM_STATES ; endstate++ ){
3006 cpS = tap_state_name( endstate );
3007 if( 0 == strcmp( cpA, cpS ) ){
3011 if( endstate >= TAP_NUM_STATES ){
3012 return ERROR_COMMAND_SYNTAX_ERROR;
3014 if (!scan_is_safe(endstate))
3015 LOG_WARNING("irscan with unsafe "
3016 "endstate \"%s\"", cpA);
3017 /* found - remove the last 2 args */
3023 int num_fields = argc / 2;
3025 fields = malloc(sizeof(scan_field_t) * num_fields);
3027 for (i = 0; i < num_fields; i++)
3029 tap = jtag_TapByString( args[i*2] );
3032 command_print( cmd_ctx, "Tap: %s unknown", args[i*2] );
3035 int field_size = tap->ir_length;
3036 fields[i].tap = tap;
3037 fields[i].num_bits = field_size;
3038 fields[i].out_value = malloc(CEIL(field_size, 8));
3039 buf_set_u32(fields[i].out_value, 0, field_size, strtoul(args[i*2+1], NULL, 0));
3040 fields[i].in_value = NULL;
3043 /* did we have an endstate? */
3044 jtag_add_ir_scan(num_fields, fields, endstate);
3046 int retval=jtag_execute_queue();
3048 for (i = 0; i < num_fields; i++)
3049 free(fields[i].out_value);
3056 static int Jim_Command_drscan(Jim_Interp *interp, int argc, Jim_Obj *const *args)
3059 scan_field_t *fields;
3061 int field_count = 0;
3064 tap_state_t endstate;
3067 * args[2] = num_bits
3068 * args[3] = hex string
3069 * ... repeat num bits and hex string ...
3072 * args[N-2] = "-endstate"
3073 * args[N-1] = statename
3075 if ((argc < 4) || ((argc % 2)!=0))
3077 Jim_WrongNumArgs(interp, 1, args, "wrong arguments");
3081 endstate = TAP_IDLE;
3083 /* validate arguments as numbers */
3085 for (i = 2; i < argc; i+=2)
3090 e = Jim_GetLong(interp, args[i], &bits);
3091 /* If valid - try next arg */
3096 /* Not valid.. are we at the end? */
3097 if ( ((i+2) != argc) ){
3098 /* nope, then error */
3102 /* it could be: "-endstate FOO"
3103 * e.g. DRPAUSE so we can issue more instructions
3104 * before entering RUN/IDLE and executing them.
3107 /* get arg as a string. */
3108 cp = Jim_GetString( args[i], NULL );
3109 /* is it the magic? */
3110 if( 0 == strcmp( "-endstate", cp ) ){
3111 /* is the statename valid? */
3112 cp = Jim_GetString( args[i+1], NULL );
3114 /* see if it is a valid state name */
3115 endstate = tap_state_by_name(cp);
3117 /* update the error message */
3118 Jim_SetResult_sprintf(interp,"endstate: %s invalid", cp );
3120 if (!scan_is_safe(endstate))
3121 LOG_WARNING("drscan with unsafe "
3122 "endstate \"%s\"", cp);
3124 /* valid - so clear the error */
3126 /* and remove the last 2 args */
3131 /* Still an error? */
3133 return e; /* too bad */
3135 } /* validate args */
3137 tap = jtag_TapByJimObj( interp, args[1] );
3142 num_fields=(argc-2)/2;
3143 fields = malloc(sizeof(scan_field_t) * num_fields);
3144 for (i = 2; i < argc; i+=2)
3150 Jim_GetLong(interp, args[i], &bits);
3151 str = Jim_GetString(args[i+1], &len);
3153 fields[field_count].tap = tap;
3154 fields[field_count].num_bits = bits;
3155 fields[field_count].out_value = malloc(CEIL(bits, 8));
3156 str_to_buf(str, len, fields[field_count].out_value, bits, 0);
3157 fields[field_count].in_value = fields[field_count].out_value;
3161 jtag_add_dr_scan(num_fields, fields, endstate);
3163 retval = jtag_execute_queue();
3164 if (retval != ERROR_OK)
3166 Jim_SetResultString(interp, "drscan: jtag execute failed",-1);
3171 Jim_Obj *list = Jim_NewListObj(interp, NULL, 0);
3172 for (i = 2; i < argc; i+=2)
3177 Jim_GetLong(interp, args[i], &bits);
3178 str = buf_to_str(fields[field_count].in_value, bits, 16);
3179 free(fields[field_count].out_value);
3181 Jim_ListAppendElement(interp, list, Jim_NewStringObj(interp, str, strlen(str)));
3186 Jim_SetResult(interp, list);
3194 static int Jim_Command_flush_count(Jim_Interp *interp, int argc, Jim_Obj *const *args)
3196 Jim_SetResult(interp, Jim_NewIntObj(interp, jtag_flush_queue_count));
3202 static int handle_verify_ircapture_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
3206 if (strcmp(args[0], "enable") == 0)
3208 jtag_verify_capture_ir = 1;
3210 else if (strcmp(args[0], "disable") == 0)
3212 jtag_verify_capture_ir = 0;
3215 return ERROR_COMMAND_SYNTAX_ERROR;
3217 } else if (argc != 0)
3219 return ERROR_COMMAND_SYNTAX_ERROR;
3222 command_print(cmd_ctx, "verify Capture-IR is %s", (jtag_verify_capture_ir) ? "enabled": "disabled");
3227 static int handle_verify_jtag_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
3231 if (strcmp(args[0], "enable") == 0)
3235 else if (strcmp(args[0], "disable") == 0)
3240 return ERROR_COMMAND_SYNTAX_ERROR;
3242 } else if (argc != 0)
3244 return ERROR_COMMAND_SYNTAX_ERROR;
3247 command_print(cmd_ctx, "verify jtag capture is %s", (jtag_verify) ? "enabled": "disabled");
3253 int jtag_power_dropout(int *dropout)
3255 return jtag->power_dropout(dropout);
3258 int jtag_srst_asserted(int *srst_asserted)
3260 return jtag->srst_asserted(srst_asserted);
3263 void jtag_tap_handle_event( jtag_tap_t * tap, enum jtag_tap_event e)
3265 jtag_tap_event_action_t * jteap;
3268 jteap = tap->event_action;
3272 if (jteap->event == e) {
3274 LOG_DEBUG( "JTAG tap: %s event: %d (%s) action: %s\n",
3277 Jim_Nvp_value2name_simple(nvp_jtag_tap_event, e)->name,
3278 Jim_GetString(jteap->body, NULL) );
3279 if (Jim_EvalObj(interp, jteap->body) != JIM_OK) {
3280 Jim_PrintErrorMessage(interp);
3284 jteap = jteap->next;
3288 LOG_DEBUG( "event %d %s - no action",
3290 Jim_Nvp_value2name_simple( nvp_jtag_tap_event, e)->name);
3294 /*-----<Cable Helper API>---------------------------------------*/
3296 /* these Cable Helper API functions are all documented in the jtag.h header file,
3297 using a Doxygen format. And since Doxygen's configuration file "Doxyfile",
3298 is setup to prefer its docs in the header file, no documentation is here, for
3299 if it were, it would have to be doubly maintained.
3303 * @see tap_set_state() and tap_get_state() accessors.
3304 * Actual name is not important since accessors hide it.
3306 static tap_state_t state_follower = TAP_RESET;
3308 void tap_set_state_impl( tap_state_t new_state )
3310 /* this is the state we think the TAPs are in now, was cur_state */
3311 state_follower = new_state;
3314 tap_state_t tap_get_state()
3316 return state_follower;
3320 * @see tap_set_end_state() and tap_get_end_state() accessors.
3321 * Actual name is not important because accessors hide it.
3323 static tap_state_t end_state_follower = TAP_RESET;
3325 void tap_set_end_state( tap_state_t new_end_state )
3327 /* this is the state we think the TAPs will be in at completion of the
3328 current TAP operation, was end_state
3330 end_state_follower = new_end_state;
3333 tap_state_t tap_get_end_state()
3335 return end_state_follower;
3339 int tap_move_ndx( tap_state_t astate )
3341 /* given a stable state, return the index into the tms_seqs[] array within tap_get_tms_path() */
3347 case TAP_RESET: ndx = 0; break;
3348 case TAP_DRSHIFT: ndx = 2; break;
3349 case TAP_DRPAUSE: ndx = 3; break;
3350 case TAP_IDLE: ndx = 1; break;
3351 case TAP_IRSHIFT: ndx = 4; break;
3352 case TAP_IRPAUSE: ndx = 5; break;
3354 LOG_ERROR( "fatal: unstable state \"%s\" used in tap_move_ndx()", tap_state_name(astate) );
3362 /* tap_move[i][j]: tap movement command to go from state i to state j
3363 * 0: Test-Logic-Reset
3370 * DRSHIFT->DRSHIFT and IRSHIFT->IRSHIFT have to be caught in interface specific code
3372 struct tms_sequences
3380 * These macros allow us to specify TMS state transitions by bits rather than hex bytes.
3381 * Read the bits from LSBit first to MSBit last (right-to-left).
3383 #define HEX__(n) 0x##n##LU
3386 (((x) & 0x0000000FLU)?(1<<0):0) \
3387 +(((x) & 0x000000F0LU)?(1<<1):0) \
3388 +(((x) & 0x00000F00LU)?(1<<2):0) \
3389 +(((x) & 0x0000F000LU)?(1<<3):0) \
3390 +(((x) & 0x000F0000LU)?(1<<4):0) \
3391 +(((x) & 0x00F00000LU)?(1<<5):0) \
3392 +(((x) & 0x0F000000LU)?(1<<6):0) \
3393 +(((x) & 0xF0000000LU)?(1<<7):0)
3395 #define B8(bits,count) { ((u8)B8__(HEX__(bits))), (count) }
3397 static const struct tms_sequences old_tms_seqs[6][6] = /* [from_state_ndx][to_state_ndx] */
3399 /* value clocked to TMS to move from one of six stable states to another.
3400 * N.B. OOCD clocks TMS from LSB first, so read these right-to-left.
3401 * N.B. These values are tightly bound to the table in tap_get_tms_path_len().
3402 * N.B. Reset only needs to be 0b11111, but in JLink an even byte of 1's is more stable.
3403 * These extra ones cause no TAP state problem, because we go into reset and stay in reset.
3409 /* RESET IDLE DRSHIFT DRPAUSE IRSHIFT IRPAUSE */ /* from state: */
3410 { B8(1111111,7), B8(0000000,7), B8(0010111,7), B8(0001010,7), B8(0011011,7), B8(0010110,7) }, /* RESET */
3411 { B8(1111111,7), B8(0000000,7), B8(0100101,7), B8(0000101,7), B8(0101011,7), B8(0001011,7) }, /* IDLE */
3412 { B8(1111111,7), B8(0110001,7), B8(0000000,7), B8(0000001,7), B8(0001111,7), B8(0101111,7) }, /* DRSHIFT */
3413 { B8(1111111,7), B8(0110000,7), B8(0100000,7), B8(0010111,7), B8(0011110,7), B8(0101111,7) }, /* DRPAUSE */
3414 { B8(1111111,7), B8(0110001,7), B8(0000111,7), B8(0010111,7), B8(0000000,7), B8(0000001,7) }, /* IRSHIFT */
3415 { B8(1111111,7), B8(0110000,7), B8(0011100,7), B8(0010111,7), B8(0011110,7), B8(0101111,7) }, /* IRPAUSE */
3420 static const struct tms_sequences short_tms_seqs[6][6] = /* [from_state_ndx][to_state_ndx] */
3422 /* this is the table submitted by Jeff Williams on 3/30/2009 with this comment:
3424 OK, I added Peter's version of the state table, and it works OK for
3425 me on MC1322x. I've recreated the jlink portion of patch with this
3426 new state table. His changes to my state table are pretty minor in
3427 terms of total transitions, but Peter feels that his version fixes
3428 some long-standing problems.
3431 I added the bit count into the table, reduced RESET column to 7 bits from 8.
3434 state specific comments:
3435 ------------------------
3436 *->RESET tried the 5 bit reset and it gave me problems, 7 bits seems to
3437 work better on ARM9 with ft2232 driver. (Dick)
3439 RESET->DRSHIFT add 1 extra clock cycles in the RESET state before advancing.
3440 needed on ARM9 with ft2232 driver. (Dick)
3442 RESET->IRSHIFT add 1 extra clock cycles in the RESET state before advancing.
3443 needed on ARM9 with ft2232 driver. (Dick)
3447 /* RESET IDLE DRSHIFT DRPAUSE IRSHIFT IRPAUSE */ /* from state: */
3448 { B8(1111111,7), B8(0000000,7), B8(0010111,7), B8(0001010,7), B8(0011011,7), B8(0010110,7) }, /* RESET */
3449 { B8(1111111,7), B8(0000000,7), B8(001,3), B8(0101,4), B8(0011,4), B8(01011,5) }, /* IDLE */
3450 { B8(1111111,7), B8(011,3), B8(00111,5), B8(01,2), B8(001111,6), B8(0101111,7) }, /* DRSHIFT */
3451 { B8(1111111,7), B8(011,3), B8(01,2), B8(0,1), B8(001111,6), B8(0101111,7) }, /* DRPAUSE */
3452 { B8(1111111,7), B8(011,3), B8(00111,5), B8(010111,6), B8(001111,6), B8(01,2) }, /* IRSHIFT */
3453 { B8(1111111,7), B8(011,3), B8(00111,5), B8(010111,6), B8(01,2), B8(0,1) } /* IRPAUSE */
3457 typedef const struct tms_sequences tms_table[6][6];
3459 static tms_table *tms_seqs=&short_tms_seqs;
3461 int tap_get_tms_path( tap_state_t from, tap_state_t to )
3463 return (*tms_seqs)[tap_move_ndx(from)][tap_move_ndx(to)].bits;
3467 int tap_get_tms_path_len( tap_state_t from, tap_state_t to )
3469 return (*tms_seqs)[tap_move_ndx(from)][tap_move_ndx(to)].bit_count;
3473 bool tap_is_state_stable(tap_state_t astate)
3477 /* A switch() is used because it is symbol dependent
3478 (not value dependent like an array), and can also check bounds.
3497 tap_state_t tap_state_transition(tap_state_t cur_state, bool tms)
3499 tap_state_t new_state;
3501 /* A switch is used because it is symbol dependent and not value dependent
3502 like an array. Also it can check for out of range conditions.
3510 new_state = cur_state;
3515 new_state = TAP_DRSELECT;
3518 new_state = TAP_IRSELECT;
3522 new_state = TAP_DREXIT1;
3526 new_state = TAP_DRUPDATE;
3529 new_state = TAP_DREXIT2;
3532 new_state = TAP_RESET;
3536 new_state = TAP_IREXIT1;
3540 new_state = TAP_IRUPDATE;
3543 new_state = TAP_IREXIT2;
3546 LOG_ERROR( "fatal: invalid argument cur_state=%d", cur_state );
3559 new_state = TAP_IDLE;
3562 new_state = TAP_DRCAPTURE;
3567 new_state = TAP_DRSHIFT;
3571 new_state = TAP_DRPAUSE;
3574 new_state = TAP_IRCAPTURE;
3579 new_state = TAP_IRSHIFT;
3583 new_state = TAP_IRPAUSE;
3586 LOG_ERROR( "fatal: invalid argument cur_state=%d", cur_state );
3595 const char* tap_state_name(tap_state_t state)
3601 case TAP_RESET: ret = "RESET"; break;
3602 case TAP_IDLE: ret = "RUN/IDLE"; break;
3603 case TAP_DRSELECT: ret = "DRSELECT"; break;
3604 case TAP_DRCAPTURE: ret = "DRCAPTURE"; break;
3605 case TAP_DRSHIFT: ret = "DRSHIFT"; break;
3606 case TAP_DREXIT1: ret = "DREXIT1"; break;
3607 case TAP_DRPAUSE: ret = "DRPAUSE"; break;
3608 case TAP_DREXIT2: ret = "DREXIT2"; break;
3609 case TAP_DRUPDATE: ret = "DRUPDATE"; break;
3610 case TAP_IRSELECT: ret = "IRSELECT"; break;
3611 case TAP_IRCAPTURE: ret = "IRCAPTURE"; break;
3612 case TAP_IRSHIFT: ret = "IRSHIFT"; break;
3613 case TAP_IREXIT1: ret = "IREXIT1"; break;
3614 case TAP_IRPAUSE: ret = "IRPAUSE"; break;
3615 case TAP_IREXIT2: ret = "IREXIT2"; break;
3616 case TAP_IRUPDATE: ret = "IRUPDATE"; break;
3617 default: ret = "???";
3623 static tap_state_t tap_state_by_name( const char *name )
3627 for( x = 0 ; x < TAP_NUM_STATES ; x++ ){
3628 /* be nice to the human */
3629 if( 0 == strcasecmp( name, tap_state_name(x) ) ){
3637 #ifdef _DEBUG_JTAG_IO_
3639 #define JTAG_DEBUG_STATE_APPEND(buf, len, bit) \
3640 do { buf[len] = bit ? '1' : '0'; } while(0)
3641 #define JTAG_DEBUG_STATE_PRINT(a, b, astr, bstr) \
3642 DEBUG_JTAG_IO("TAP/SM: %9s -> %5s\tTMS: %s\tTDI: %s", \
3643 tap_state_name(a), tap_state_name(b), astr, bstr)
3645 tap_state_t jtag_debug_state_machine(const void *tms_buf, const void *tdi_buf,
3646 unsigned tap_bits, tap_state_t next_state)
3648 const u8 *tms_buffer;
3649 const u8 *tdi_buffer;
3654 unsigned tap_out_bits;
3658 tap_state_t last_state;
3660 // set startstate (and possibly last, if tap_bits == 0)
3661 last_state = next_state;
3662 DEBUG_JTAG_IO("TAP/SM: START state: %s", tap_state_name(next_state));
3664 tms_buffer = (const u8 *)tms_buf;
3665 tdi_buffer = (const u8 *)tdi_buf;
3667 tap_bytes = TAP_SCAN_BYTES(tap_bits);
3668 DEBUG_JTAG_IO("TAP/SM: TMS bits: %u (bytes: %u)", tap_bits, tap_bytes);
3671 for(cur_byte = 0; cur_byte < tap_bytes; cur_byte++)
3673 for(cur_bit = 0; cur_bit < 8; cur_bit++)
3675 // make sure we do not run off the end of the buffers
3676 unsigned tap_bit = cur_byte * 8 + cur_bit;
3677 if (tap_bit == tap_bits)
3680 // check and save TMS bit
3681 tap_bit = !!(tms_buffer[cur_byte] & (1 << cur_bit));
3682 JTAG_DEBUG_STATE_APPEND(tms_str, tap_out_bits, tap_bit);
3684 // use TMS bit to find the next TAP state
3685 next_state = tap_state_transition(last_state, tap_bit);
3687 // check and store TDI bit
3688 tap_bit = !!(tdi_buffer[cur_byte] & (1 << cur_bit));
3689 JTAG_DEBUG_STATE_APPEND(tdi_str, tap_out_bits, tap_bit);
3691 // increment TAP bits
3694 // Only show TDO bits on state transitions, or
3695 // after some number of bits in the same state.
3696 if ((next_state == last_state) && (tap_out_bits < 32))
3699 // terminate strings and display state transition
3700 tms_str[tap_out_bits] = tdi_str[tap_out_bits] = 0;
3701 JTAG_DEBUG_STATE_PRINT(last_state, next_state, tms_str, tdi_str);
3704 last_state = next_state;
3711 // terminate strings and display state transition
3712 tms_str[tap_out_bits] = tdi_str[tap_out_bits] = 0;
3713 JTAG_DEBUG_STATE_PRINT(last_state, next_state, tms_str, tdi_str);
3716 DEBUG_JTAG_IO("TAP/SM: FINAL state: %s", tap_state_name(next_state));
3720 #endif // _DEBUG_JTAG_IO_
3722 #ifndef HAVE_JTAG_MINIDRIVER_H
3723 void jtag_alloc_in_value32(scan_field_t *field)
3725 field->in_value=(u8 *)cmd_queue_alloc(4);
3729 static int handle_tms_sequence_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
3733 if (strcmp(args[0], "short") == 0)
3735 tms_seqs=&short_tms_seqs;
3737 else if (strcmp(args[0], "long") == 0)
3739 tms_seqs=&old_tms_seqs;
3742 return ERROR_COMMAND_SYNTAX_ERROR;
3744 } else if (argc != 0)
3746 return ERROR_COMMAND_SYNTAX_ERROR;
3749 command_print(cmd_ctx, "tms sequence is %s", (tms_seqs==&short_tms_seqs) ? "short": "long");
3754 /*-----</Cable Helper API>--------------------------------------*/
3758 * Function jtag_add_statemove
3759 * moves from the current state to the goal \a state. This needs
3760 * to be handled according to the xsvf spec, see the XSTATE command
3763 int jtag_add_statemove(tap_state_t goal_state)
3765 int retval = ERROR_OK;
3767 tap_state_t moves[8];
3768 tap_state_t cur_state = cmd_queue_cur_state;
3773 LOG_DEBUG( "cur_state=%s goal_state=%s",
3774 tap_state_name(cur_state),
3775 tap_state_name(goal_state) );
3778 /* From the XSVF spec, pertaining to XSTATE:
3780 For special states known as stable states (Test-Logic-Reset,
3781 Run-Test/Idle, Pause-DR, Pause- IR), an XSVF interpreter follows
3782 predefined TAP state paths when the starting state is a stable state and
3783 when the XSTATE specifies a new stable state (see the STATE command in
3784 the [Ref 5] for the TAP state paths between stable states). For
3785 non-stable states, XSTATE should specify a state that is only one TAP
3786 state transition distance from the current TAP state to avoid undefined
3787 TAP state paths. A sequence of multiple XSTATE commands can be issued to
3788 transition the TAP through a specific state path.
3791 if (goal_state==cur_state )
3792 ; /* nothing to do */
3794 else if( goal_state==TAP_RESET )
3799 else if( tap_is_state_stable(cur_state) && tap_is_state_stable(goal_state) )
3801 /* note: unless tms_bits holds a path that agrees with [Ref 5] in above
3802 spec, then this code is not fully conformant to the xsvf spec. This
3803 puts a burden on tap_get_tms_path() function from the xsvf spec.
3804 If in doubt, you should confirm that that burden is being met.
3807 tms_bits = tap_get_tms_path(cur_state, goal_state);
3808 tms_count = tap_get_tms_path_len(cur_state, goal_state);
3810 assert( (unsigned) tms_count < DIM(moves) );
3812 for (i=0; i<tms_count; i++, tms_bits>>=1)
3814 bool bit = tms_bits & 1;
3816 cur_state = tap_state_transition(cur_state, bit);
3817 moves[i] = cur_state;
3820 jtag_add_pathmove(tms_count, moves);
3823 /* else state must be immediately reachable in one clock cycle, and does not
3824 need to be a stable state.
3826 else if( tap_state_transition(cur_state, true) == goal_state
3827 || tap_state_transition(cur_state, false) == goal_state )
3829 /* move a single state */
3830 moves[0] = goal_state;
3831 jtag_add_pathmove( 1, moves );
3836 retval = ERROR_FAIL;