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   1 /***************************************************************************
   2  *   Copyright (C) 2005 by Dominic Rath                                    *
   3  *   Dominic.Rath@gmx.de                                                   *
   4  *                                                                         *
   5  *   Copyright (C) 2007,2008 Øyvind Harboe                                 *
   6  *   oyvind.harboe@zylin.com                                               *
   7  *                                                                         *
   8  *   Copyright (C) 2009 SoftPLC Corporation                                *
   9  *       http://softplc.com                                                *
  10  *   dick@softplc.com                                                      *
  11  *                                                                         *
  12  *   Copyright (C) 2009 Zachary T Welch                                    *
  13  *   zw@superlucidity.net                                                  *
  14  *                                                                         *
  15  *   This program is free software; you can redistribute it and/or modify  *
  16  *   it under the terms of the GNU General Public License as published by  *
  17  *   the Free Software Foundation; either version 2 of the License, or     *
  18  *   (at your option) any later version.                                   *
  19  *                                                                         *
  20  *   This program is distributed in the hope that it will be useful,       *
  21  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  22  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  23  *   GNU General Public License for more details.                          *
  24  *                                                                         *
  25  *   You should have received a copy of the GNU General Public License     *
  26  *   along with this program; if not, write to the                         *
  27  *   Free Software Foundation, Inc.,                                       *
  28  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
  29  ***************************************************************************/
  30 #ifdef HAVE_CONFIG_H
  31 #include "config.h"
  32 #endif
  33
  34 #include "jtag.h"
  35 #include "minidriver.h"
  36 #include "interface.h"
  37
  38 #ifdef HAVE_STRINGS_H
  39 #include <strings.h>
  40 #endif
  41
  42 static const Jim_Nvp nvp_jtag_tap_event[] = {
  43         { .value = JTAG_TAP_EVENT_ENABLE,       .name = "tap-enable" },
  44         { .value = JTAG_TAP_EVENT_DISABLE,      .name = "tap-disable" },
  45
  46         { .name = NULL, .value = -1 }
  47 };
  48
  49 /* jtag interfaces (parport, FTDI-USB, TI-USB, ...)
  50  */
  51
  52 #if BUILD_ECOSBOARD == 1
  53         extern jtag_interface_t zy1000_interface;
  54 #elif defined(BUILD_MINIDRIVER_DUMMY)
  55         extern jtag_interface_t minidummy_interface;
  56 #else // standard drivers
  57 #if BUILD_PARPORT == 1
  58         extern jtag_interface_t parport_interface;
  59 #endif
  60
  61 #if BUILD_DUMMY == 1
  62         extern jtag_interface_t dummy_interface;
  63 #endif
  64
  65 #if BUILD_FT2232_FTD2XX == 1
  66         extern jtag_interface_t ft2232_interface;
  67 #endif
  68
  69 #if BUILD_FT2232_LIBFTDI == 1
  70         extern jtag_interface_t ft2232_interface;
  71 #endif
  72
  73 #if BUILD_AMTJTAGACCEL == 1
  74         extern jtag_interface_t amt_jtagaccel_interface;
  75 #endif
  76
  77 #if BUILD_EP93XX == 1
  78         extern jtag_interface_t ep93xx_interface;
  79 #endif
  80
  81 #if BUILD_AT91RM9200 == 1
  82         extern jtag_interface_t at91rm9200_interface;
  83 #endif
  84
  85 #if BUILD_GW16012 == 1
  86         extern jtag_interface_t gw16012_interface;
  87 #endif
  88
  89 #if BUILD_PRESTO_LIBFTDI == 1 || BUILD_PRESTO_FTD2XX == 1
  90         extern jtag_interface_t presto_interface;
  91 #endif
  92
  93 #if BUILD_USBPROG == 1
  94         extern jtag_interface_t usbprog_interface;
  95 #endif
  96
  97 #if BUILD_JLINK == 1
  98         extern jtag_interface_t jlink_interface;
  99 #endif
 100
 101 #if BUILD_VSLLINK == 1
 102         extern jtag_interface_t vsllink_interface;
 103 #endif
 104
 105 #if BUILD_RLINK == 1
 106         extern jtag_interface_t rlink_interface;
 107 #endif
 108
 109 #if BUILD_ARMJTAGEW == 1
 110         extern jtag_interface_t armjtagew_interface;
 111 #endif
 112 #endif // standard drivers
 113
 114 /**
 115  * The list of built-in JTAG interfaces, containing entries for those
 116  * drivers that were enabled by the @c configure script.
 117  *
 118  * The list should be defined to contain either one minidriver interface
 119  * or some number of standard driver interfaces, never both.
 120  */
 121 jtag_interface_t *jtag_interfaces[] = {
 122 #if BUILD_ECOSBOARD == 1
 123         &zy1000_interface,
 124 #elif defined(BUILD_MINIDRIVER_DUMMY)
 125         &minidummy_interface,
 126 #else // standard drivers
 127 #if BUILD_PARPORT == 1
 128         &parport_interface,
 129 #endif
 130 #if BUILD_DUMMY == 1
 131         &dummy_interface,
 132 #endif
 133 #if BUILD_FT2232_FTD2XX == 1
 134         &ft2232_interface,
 135 #endif
 136 #if BUILD_FT2232_LIBFTDI == 1
 137         &ft2232_interface,
 138 #endif
 139 #if BUILD_AMTJTAGACCEL == 1
 140         &amt_jtagaccel_interface,
 141 #endif
 142 #if BUILD_EP93XX == 1
 143         &ep93xx_interface,
 144 #endif
 145 #if BUILD_AT91RM9200 == 1
 146         &at91rm9200_interface,
 147 #endif
 148 #if BUILD_GW16012 == 1
 149         &gw16012_interface,
 150 #endif
 151 #if BUILD_PRESTO_LIBFTDI == 1 || BUILD_PRESTO_FTD2XX == 1
 152         &presto_interface,
 153 #endif
 154 #if BUILD_USBPROG == 1
 155         &usbprog_interface,
 156 #endif
 157 #if BUILD_JLINK == 1
 158         &jlink_interface,
 159 #endif
 160 #if BUILD_VSLLINK == 1
 161         &vsllink_interface,
 162 #endif
 163 #if BUILD_RLINK == 1
 164         &rlink_interface,
 165 #endif
 166 #if BUILD_ARMJTAGEW == 1
 167         &armjtagew_interface,
 168 #endif
 169 #endif // standard drivers
 170         NULL,
 171 };
 172
 173 extern jtag_interface_t *jtag_interface;
 174
 175 /* jtag commands */
 176 static int handle_interface_list_command(struct command_context_s *cmd_ctx,
 177                 char *cmd, char **args, int argc);
 178 static int handle_interface_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 179 static int handle_jtag_speed_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 180 static int handle_jtag_khz_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 181 static int handle_jtag_device_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 182 static int handle_reset_config_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 183 static int handle_jtag_nsrst_delay_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 184 static int handle_jtag_ntrst_delay_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 185
 186 static int handle_scan_chain_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 187
 188 static int handle_jtag_reset_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 189 static int handle_runtest_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 190 static int handle_irscan_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 191 static int Jim_Command_drscan(Jim_Interp *interp, int argc, Jim_Obj *const *argv);
 192 static int Jim_Command_pathmove(Jim_Interp *interp, int argc, Jim_Obj *const *argv);
 193 static int Jim_Command_flush_count(Jim_Interp *interp, int argc, Jim_Obj *const *args);
 194
 195 static int handle_verify_ircapture_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 196 static int handle_verify_jtag_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 197 static int handle_tms_sequence_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 198
 199 extern int jtag_examine_chain(void);
 200 extern int jtag_validate_chain(void);
 201
 202 enum jtag_tap_cfg_param {
 203         JCFG_EVENT
 204 };
 205
 206 static Jim_Nvp nvp_config_opts[] = {
 207         { .name = "-event",      .value = JCFG_EVENT },
 208
 209         { .name = NULL,          .value = -1 }
 210 };
 211
 212 static int jtag_tap_configure_cmd( Jim_GetOptInfo *goi, jtag_tap_t * tap)
 213 {
 214         Jim_Nvp *n;
 215         Jim_Obj *o;
 216         int e;
 217
 218         /* parse config or cget options */
 219         while (goi->argc > 0) {
 220                 Jim_SetEmptyResult (goi->interp);
 221
 222                 e = Jim_GetOpt_Nvp(goi, nvp_config_opts, &n);
 223                 if (e != JIM_OK) {
 224                         Jim_GetOpt_NvpUnknown(goi, nvp_config_opts, 0);
 225                         return e;
 226                 }
 227
 228                 switch (n->value) {
 229                         case JCFG_EVENT:
 230                                 if (goi->argc == 0) {
 231                                         Jim_WrongNumArgs( goi->interp, goi->argc, goi->argv, "-event ?event-name? ..." );
 232                                         return JIM_ERR;
 233                                 }
 234
 235                                 e = Jim_GetOpt_Nvp( goi, nvp_jtag_tap_event, &n );
 236                                 if (e != JIM_OK) {
 237                                         Jim_GetOpt_NvpUnknown(goi, nvp_jtag_tap_event, 1);
 238                                         return e;
 239                                 }
 240
 241                                 if (goi->isconfigure) {
 242                                         if (goi->argc != 1) {
 243                                                 Jim_WrongNumArgs(goi->interp, goi->argc, goi->argv, "-event ?event-name? ?EVENT-BODY?");
 244                                                 return JIM_ERR;
 245                                         }
 246                                 } else {
 247                                         if (goi->argc != 0) {
 248                                                 Jim_WrongNumArgs(goi->interp, goi->argc, goi->argv, "-event ?event-name?");
 249                                                 return JIM_ERR;
 250                                         }
 251                                 }
 252
 253                                 {
 254                                         jtag_tap_event_action_t *jteap;
 255
 256                                         jteap = tap->event_action;
 257                                         /* replace existing? */
 258                                         while (jteap) {
 259                                                 if (jteap->event == (enum jtag_tap_event)n->value) {
 260                                                         break;
 261                                                 }
 262                                                 jteap = jteap->next;
 263                                         }
 264
 265                                         if (goi->isconfigure) {
 266                                                 if (jteap == NULL) {
 267                                                         /* create new */
 268                                                         jteap = calloc(1, sizeof (*jteap));
 269                                                 }
 270                                                 jteap->event = n->value;
 271                                                 Jim_GetOpt_Obj( goi, &o);
 272                                                 if (jteap->body) {
 273                                                         Jim_DecrRefCount(interp, jteap->body);
 274                                                 }
 275                                                 jteap->body = Jim_DuplicateObj(goi->interp, o);
 276                                                 Jim_IncrRefCount(jteap->body);
 277
 278                                                 /* add to head of event list */
 279                                                 jteap->next = tap->event_action;
 280                                                 tap->event_action = jteap;
 281                                                 Jim_SetEmptyResult(goi->interp);
 282                                         } else {
 283                                                 /* get */
 284                                                 if (jteap == NULL) {
 285                                                         Jim_SetEmptyResult(goi->interp);
 286                                                 } else {
 287                                                         Jim_SetResult(goi->interp, Jim_DuplicateObj(goi->interp, jteap->body));
 288                                                 }
 289                                         }
 290                                 }
 291                                 /* loop for more */
 292                                 break;
 293                 }
 294         } /* while (goi->argc) */
 295
 296         return JIM_OK;
 297 }
 298
 299 static int is_bad_irval(int ir_length, jim_wide w)
 300 {
 301         jim_wide v = 1;
 302
 303         v <<= ir_length;
 304         v -= 1;
 305         v = ~v;
 306         return (w & v) != 0;
 307 }
 308
 309 extern void jtag_tap_init(jtag_tap_t *tap);
 310 extern void jtag_tap_free(jtag_tap_t *tap);
 311
 312 static int jim_newtap_cmd( Jim_GetOptInfo *goi )
 313 {
 314         jtag_tap_t *pTap;
 315         jim_wide w;
 316         int x;
 317         int e;
 318         int reqbits;
 319         Jim_Nvp *n;
 320         char *cp;
 321         const Jim_Nvp opts[] = {
 322 #define NTAP_OPT_IRLEN     0
 323                 { .name = "-irlen"                      ,       .value = NTAP_OPT_IRLEN },
 324 #define NTAP_OPT_IRMASK    1
 325                 { .name = "-irmask"                     ,       .value = NTAP_OPT_IRMASK },
 326 #define NTAP_OPT_IRCAPTURE 2
 327                 { .name = "-ircapture"          ,       .value = NTAP_OPT_IRCAPTURE },
 328 #define NTAP_OPT_ENABLED   3
 329                 { .name = "-enable"                     ,       .value = NTAP_OPT_ENABLED },
 330 #define NTAP_OPT_DISABLED  4
 331                 { .name = "-disable"            ,       .value = NTAP_OPT_DISABLED },
 332 #define NTAP_OPT_EXPECTED_ID 5
 333                 { .name = "-expected-id"        ,       .value = NTAP_OPT_EXPECTED_ID },
 334                 { .name = NULL                          ,       .value = -1 },
 335         };
 336
 337         pTap = malloc( sizeof(jtag_tap_t) );
 338         memset( pTap, 0, sizeof(*pTap) );
 339         if( !pTap ){
 340                 Jim_SetResult_sprintf( goi->interp, "no memory");
 341                 return JIM_ERR;
 342         }
 343         /*
 344          * we expect CHIP + TAP + OPTIONS
 345          * */
 346         if( goi->argc < 3 ){
 347                 Jim_SetResult_sprintf(goi->interp, "Missing CHIP TAP OPTIONS ....");
 348                 return JIM_ERR;
 349         }
 350         Jim_GetOpt_String( goi, &cp, NULL );
 351         pTap->chip = strdup(cp);
 352
 353         Jim_GetOpt_String( goi, &cp, NULL );
 354         pTap->tapname = strdup(cp);
 355
 356         /* name + dot + name + null */
 357         x = strlen(pTap->chip) + 1 + strlen(pTap->tapname) + 1;
 358         cp = malloc( x );
 359         sprintf( cp, "%s.%s", pTap->chip, pTap->tapname );
 360         pTap->dotted_name = cp;
 361
 362         LOG_DEBUG("Creating New Tap, Chip: %s, Tap: %s, Dotted: %s, %d params",
 363                           pTap->chip, pTap->tapname, pTap->dotted_name, goi->argc);
 364
 365         /* default is enabled */
 366         pTap->enabled = 1;
 367
 368         /* deal with options */
 369 #define NTREQ_IRLEN      1
 370 #define NTREQ_IRCAPTURE  2
 371 #define NTREQ_IRMASK     4
 372
 373         /* clear them as we find them */
 374         reqbits = (NTREQ_IRLEN | NTREQ_IRCAPTURE | NTREQ_IRMASK);
 375
 376         while( goi->argc ){
 377                 e = Jim_GetOpt_Nvp( goi, opts, &n );
 378                 if( e != JIM_OK ){
 379                         Jim_GetOpt_NvpUnknown( goi, opts, 0 );
 380                         return e;
 381                 }
 382                 LOG_DEBUG("Processing option: %s", n->name );
 383                 switch( n->value ){
 384                 case NTAP_OPT_ENABLED:
 385                         pTap->enabled = 1;
 386                         break;
 387                 case NTAP_OPT_DISABLED:
 388                         pTap->enabled = 0;
 389                         break;
 390                 case NTAP_OPT_EXPECTED_ID:
 391                 {
 392                         u32 *new_expected_ids;
 393
 394                         e = Jim_GetOpt_Wide( goi, &w );
 395                         if( e != JIM_OK) {
 396                                 Jim_SetResult_sprintf(goi->interp, "option: %s bad parameter", n->name);
 397                                 return e;
 398                         }
 399
 400                         new_expected_ids = malloc(sizeof(u32) * (pTap->expected_ids_cnt + 1));
 401                         if (new_expected_ids == NULL) {
 402                                 Jim_SetResult_sprintf( goi->interp, "no memory");
 403                                 return JIM_ERR;
 404                         }
 405
 406                         memcpy(new_expected_ids, pTap->expected_ids, sizeof(u32) * pTap->expected_ids_cnt);
 407
 408                         new_expected_ids[pTap->expected_ids_cnt] = w;
 409
 410                         free(pTap->expected_ids);
 411                         pTap->expected_ids = new_expected_ids;
 412                         pTap->expected_ids_cnt++;
 413                         break;
 414                 }
 415                 case NTAP_OPT_IRLEN:
 416                 case NTAP_OPT_IRMASK:
 417                 case NTAP_OPT_IRCAPTURE:
 418                         e = Jim_GetOpt_Wide( goi, &w );
 419                         if( e != JIM_OK ){
 420                                 Jim_SetResult_sprintf( goi->interp, "option: %s bad parameter", n->name );
 421                                 return e;
 422                         }
 423                         switch(n->value){
 424                         case NTAP_OPT_IRLEN:
 425                                 if (w < (jim_wide) sizeof(pTap->ir_capture_value))
 426                                         LOG_WARNING("huge IR length %d", (int) w);
 427                                 pTap->ir_length = w;
 428                                 reqbits &= (~(NTREQ_IRLEN));
 429                                 break;
 430                         case NTAP_OPT_IRMASK:
 431                                 if (is_bad_irval(pTap->ir_length, w)) {
 432                                         LOG_ERROR("IR mask %x too big",
 433                                                         (int) w);
 434                                         return ERROR_FAIL;
 435                                 }
 436                                 pTap->ir_capture_mask = w;
 437                                 reqbits &= (~(NTREQ_IRMASK));
 438                                 break;
 439                         case NTAP_OPT_IRCAPTURE:
 440                                 if (is_bad_irval(pTap->ir_length, w)) {
 441                                         LOG_ERROR("IR capture %x too big",
 442                                                         (int) w);
 443                                         return ERROR_FAIL;
 444                                 }
 445                                 pTap->ir_capture_value = w;
 446                                 reqbits &= (~(NTREQ_IRCAPTURE));
 447                                 break;
 448                         }
 449                 } /* switch(n->value) */
 450         } /* while( goi->argc ) */
 451
 452         /* Did all the required option bits get cleared? */
 453         if (0 == reqbits)
 454         {
 455                 jtag_tap_init(pTap);
 456                 return ERROR_OK;
 457         }
 458
 459         Jim_SetResult_sprintf(goi->interp,
 460                         "newtap: %s missing required parameters",
 461                         pTap->dotted_name);
 462         jtag_tap_free(pTap);
 463         return JIM_ERR;
 464 }
 465
 466 static void jtag_tap_handle_event( jtag_tap_t * tap, enum jtag_tap_event e)
 467 {
 468         jtag_tap_event_action_t * jteap;
 469         int done;
 470
 471         jteap = tap->event_action;
 472
 473         done = 0;
 474         while (jteap) {
 475                 if (jteap->event == e) {
 476                         done = 1;
 477                         LOG_DEBUG( "JTAG tap: %s event: %d (%s) action: %s\n",
 478                                         tap->dotted_name,
 479                                         e,
 480                                         Jim_Nvp_value2name_simple(nvp_jtag_tap_event, e)->name,
 481                                         Jim_GetString(jteap->body, NULL) );
 482                         if (Jim_EvalObj(interp, jteap->body) != JIM_OK) {
 483                                 Jim_PrintErrorMessage(interp);
 484                         }
 485                 }
 486
 487                 jteap = jteap->next;
 488         }
 489
 490         if (!done) {
 491                 LOG_DEBUG( "event %d %s - no action",
 492                                 e,
 493                                 Jim_Nvp_value2name_simple( nvp_jtag_tap_event, e)->name);
 494         }
 495 }
 496
 497
 498 static int jim_jtag_command( Jim_Interp *interp, int argc, Jim_Obj *const *argv )
 499 {
 500         Jim_GetOptInfo goi;
 501         int e;
 502         Jim_Nvp *n;
 503         Jim_Obj *o;
 504         struct command_context_s *context;
 505
 506         enum {
 507                 JTAG_CMD_INTERFACE,
 508                 JTAG_CMD_INIT_RESET,
 509                 JTAG_CMD_NEWTAP,
 510                 JTAG_CMD_TAPENABLE,
 511                 JTAG_CMD_TAPDISABLE,
 512                 JTAG_CMD_TAPISENABLED,
 513                 JTAG_CMD_CONFIGURE,
 514                 JTAG_CMD_CGET
 515         };
 516
 517         const Jim_Nvp jtag_cmds[] = {
 518                 { .name = "interface"     , .value = JTAG_CMD_INTERFACE },
 519                 { .name = "arp_init-reset", .value = JTAG_CMD_INIT_RESET },
 520                 { .name = "newtap"        , .value = JTAG_CMD_NEWTAP },
 521                 { .name = "tapisenabled"     , .value = JTAG_CMD_TAPISENABLED },
 522                 { .name = "tapenable"     , .value = JTAG_CMD_TAPENABLE },
 523                 { .name = "tapdisable"    , .value = JTAG_CMD_TAPDISABLE },
 524                 { .name = "configure"     , .value = JTAG_CMD_CONFIGURE },
 525                 { .name = "cget"          , .value = JTAG_CMD_CGET },
 526
 527                 { .name = NULL, .value = -1 },
 528         };
 529
 530         context = Jim_GetAssocData(interp, "context");
 531         /* go past the command */
 532         Jim_GetOpt_Setup( &goi, interp, argc-1, argv+1 );
 533
 534         e = Jim_GetOpt_Nvp( &goi, jtag_cmds, &n );
 535         if( e != JIM_OK ){
 536                 Jim_GetOpt_NvpUnknown( &goi, jtag_cmds, 0 );
 537                 return e;
 538         }
 539                 Jim_SetEmptyResult( goi.interp );
 540         switch( n->value ){
 541         case JTAG_CMD_INTERFACE:
 542                 /* return the name of the interface */
 543                 /* TCL code might need to know the exact type... */
 544                 /* FUTURE: we allow this as a means to "set" the interface. */
 545                 if( goi.argc != 0 ){
 546                         Jim_WrongNumArgs( goi.interp, 1, goi.argv-1, "(no params)");
 547                         return JIM_ERR;
 548                 }
 549                 Jim_SetResultString( goi.interp, jtag_interface->name, -1 );
 550                 return JIM_OK;
 551         case JTAG_CMD_INIT_RESET:
 552                 if( goi.argc != 0 ){
 553                         Jim_WrongNumArgs( goi.interp, 1, goi.argv-1, "(no params)");
 554                         return JIM_ERR;
 555                 }
 556                 e = jtag_init_reset(context);
 557                 if( e != ERROR_OK ){
 558                         Jim_SetResult_sprintf( goi.interp, "error: %d", e);
 559                         return JIM_ERR;
 560                 }
 561                 return JIM_OK;
 562         case JTAG_CMD_NEWTAP:
 563                 return jim_newtap_cmd( &goi );
 564                 break;
 565         case JTAG_CMD_TAPISENABLED:
 566         case JTAG_CMD_TAPENABLE:
 567         case JTAG_CMD_TAPDISABLE:
 568                 if( goi.argc != 1 ){
 569                         Jim_SetResultString( goi.interp, "Too many parameters",-1 );
 570                         return JIM_ERR;
 571                 }
 572
 573                 {
 574                         jtag_tap_t *t;
 575                         t = jtag_tap_by_jim_obj( goi.interp, goi.argv[0] );
 576                         if( t == NULL ){
 577                                 return JIM_ERR;
 578                         }
 579                         switch( n->value ){
 580                         case JTAG_CMD_TAPISENABLED:
 581                                 e = t->enabled;
 582                                 break;
 583                         case JTAG_CMD_TAPENABLE:
 584                                 jtag_tap_handle_event( t, JTAG_TAP_EVENT_ENABLE);
 585                                 e = 1;
 586                                 t->enabled = e;
 587                                 break;
 588                         case JTAG_CMD_TAPDISABLE:
 589                                 jtag_tap_handle_event( t, JTAG_TAP_EVENT_DISABLE);
 590                                 e = 0;
 591                                 t->enabled = e;
 592                                 break;
 593                         }
 594                         Jim_SetResult( goi.interp, Jim_NewIntObj( goi.interp, e ) );
 595                         return JIM_OK;
 596                 }
 597                 break;
 598
 599         case JTAG_CMD_CGET:
 600                 if( goi.argc < 2 ){
 601                         Jim_WrongNumArgs( goi.interp, 0, NULL, "?tap-name? -option ...");
 602                         return JIM_ERR;
 603                 }
 604
 605                 {
 606                         jtag_tap_t *t;
 607
 608                         Jim_GetOpt_Obj(&goi, &o);
 609                         t = jtag_tap_by_jim_obj( goi.interp, o );
 610                         if( t == NULL ){
 611                                 return JIM_ERR;
 612                         }
 613
 614                         goi.isconfigure = 0;
 615                         return jtag_tap_configure_cmd( &goi, t);
 616                 }
 617                 break;
 618
 619         case JTAG_CMD_CONFIGURE:
 620                 if( goi.argc < 3 ){
 621                         Jim_WrongNumArgs( goi.interp, 0, NULL, "?tap-name? -option ?VALUE? ...");
 622                         return JIM_ERR;
 623                 }
 624
 625                 {
 626                         jtag_tap_t *t;
 627
 628                         Jim_GetOpt_Obj(&goi, &o);
 629                         t = jtag_tap_by_jim_obj( goi.interp, o );
 630                         if( t == NULL ){
 631                                 return JIM_ERR;
 632                         }
 633
 634                         goi.isconfigure = 1;
 635                         return jtag_tap_configure_cmd( &goi, t);
 636                 }
 637         }
 638
 639         return JIM_ERR;
 640 }
 641
 642 int jtag_register_commands(struct command_context_s *cmd_ctx)
 643 {
 644         register_jim( cmd_ctx, "jtag", jim_jtag_command, "perform jtag tap actions");
 645
 646         register_command(cmd_ctx, NULL, "interface", handle_interface_command,
 647                 COMMAND_CONFIG, "try to configure interface");
 648         register_command(cmd_ctx, NULL,
 649                 "interface_list", &handle_interface_list_command,
 650                 COMMAND_ANY, "list all built-in interfaces");
 651         register_command(cmd_ctx, NULL, "jtag_speed", handle_jtag_speed_command,
 652                 COMMAND_ANY, "(DEPRECATED) set jtag speed (if supported)");
 653         register_command(cmd_ctx, NULL, "jtag_khz", handle_jtag_khz_command,
 654                 COMMAND_ANY, "set maximum jtag speed (if supported); "
 655                 "parameter is maximum khz, or 0 for adaptive clocking (RTCK).");
 656         register_command(cmd_ctx, NULL, "jtag_device", handle_jtag_device_command,
 657                 COMMAND_CONFIG, "(DEPRECATED) jtag_device <ir_length> <ir_expected> <ir_mask>");
 658         register_command(cmd_ctx, NULL, "reset_config", handle_reset_config_command,
 659                 COMMAND_ANY,
 660                 "[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]");
 661         register_command(cmd_ctx, NULL, "jtag_nsrst_delay", handle_jtag_nsrst_delay_command,
 662                 COMMAND_ANY, "jtag_nsrst_delay <ms> - delay after deasserting srst in ms");
 663         register_command(cmd_ctx, NULL, "jtag_ntrst_delay", handle_jtag_ntrst_delay_command,
 664                 COMMAND_ANY, "jtag_ntrst_delay <ms> - delay after deasserting trst in ms");
 665
 666         register_command(cmd_ctx, NULL, "scan_chain", handle_scan_chain_command,
 667                 COMMAND_EXEC, "print current scan chain configuration");
 668
 669         register_command(cmd_ctx, NULL, "jtag_reset", handle_jtag_reset_command,
 670                 COMMAND_EXEC, "toggle reset lines <trst> <srst>");
 671         register_command(cmd_ctx, NULL, "runtest", handle_runtest_command,
 672                 COMMAND_EXEC, "move to Run-Test/Idle, and execute <num_cycles>");
 673         register_command(cmd_ctx, NULL, "irscan", handle_irscan_command,
 674                 COMMAND_EXEC, "execute IR scan <device> <instr> [dev2] [instr2] ...");
 675         register_jim(cmd_ctx, "drscan", Jim_Command_drscan, "execute DR scan <device> <num_bits> <value> <num_bits1> <value2> ...");
 676         register_jim(cmd_ctx, "flush_count", Jim_Command_flush_count, "returns number of times the JTAG queue has been flushed");
 677         register_jim(cmd_ctx, "pathmove", Jim_Command_pathmove, "move JTAG to state1 then to state2, state3, etc. <state1>,<state2>,<stat3>...");
 678
 679         register_command(cmd_ctx, NULL, "verify_ircapture", handle_verify_ircapture_command,
 680                 COMMAND_ANY, "verify value captured during Capture-IR <enable|disable>");
 681         register_command(cmd_ctx, NULL, "verify_jtag", handle_verify_jtag_command,
 682                 COMMAND_ANY, "verify value capture <enable|disable>");
 683         register_command(cmd_ctx, NULL, "tms_sequence", handle_tms_sequence_command,
 684                 COMMAND_ANY, "choose short(default) or long tms_sequence <short|long>");
 685         return ERROR_OK;
 686 }
 687
 688 static int default_khz(int khz, int *jtag_speed)
 689 {
 690         LOG_ERROR("Translation from khz to jtag_speed not implemented");
 691         return ERROR_FAIL;
 692 }
 693
 694 static int default_speed_div(int speed, int *khz)
 695 {
 696         LOG_ERROR("Translation from jtag_speed to khz not implemented");
 697         return ERROR_FAIL;
 698 }
 699
 700 static int default_power_dropout(int *dropout)
 701 {
 702         *dropout=0; /* by default we can't detect power dropout */
 703         return ERROR_OK;
 704 }
 705
 706 static int default_srst_asserted(int *srst_asserted)
 707 {
 708         *srst_asserted=0; /* by default we can't detect srst asserted */
 709         return ERROR_OK;
 710 }
 711
 712 static int handle_interface_command(struct command_context_s *cmd_ctx,
 713                 char *cmd, char **args, int argc)
 714 {
 715         /* check whether the interface is already configured */
 716         if (jtag_interface)
 717         {
 718                 LOG_WARNING("Interface already configured, ignoring");
 719                 return ERROR_OK;
 720         }
 721
 722         /* interface name is a mandatory argument */
 723         if (argc != 1 || args[0][0] == '\0')
 724                 return ERROR_COMMAND_SYNTAX_ERROR;
 725
 726         for (unsigned i = 0; NULL != jtag_interfaces[i]; i++)
 727         {
 728                 if (strcmp(args[0], jtag_interfaces[i]->name) != 0)
 729                         continue;
 730
 731                 int retval = jtag_interfaces[i]->register_commands(cmd_ctx);
 732                 if (ERROR_OK != retval)
 733                                 return retval;
 734
 735                 jtag_interface = jtag_interfaces[i];
 736
 737                 if (jtag_interface->khz == NULL)
 738                         jtag_interface->khz = default_khz;
 739                 if (jtag_interface->speed_div == NULL)
 740                         jtag_interface->speed_div = default_speed_div;
 741                 if (jtag_interface->power_dropout == NULL)
 742                         jtag_interface->power_dropout = default_power_dropout;
 743                 if (jtag_interface->srst_asserted == NULL)
 744                         jtag_interface->srst_asserted = default_srst_asserted;
 745
 746                 return ERROR_OK;
 747         }
 748
 749         /* no valid interface was found (i.e. the configuration option,
 750          * didn't match one of the compiled-in interfaces
 751          */
 752         LOG_ERROR("The specified JTAG interface was not found (%s)", args[0]);
 753         handle_interface_list_command(cmd_ctx, cmd, args, argc);
 754         return ERROR_JTAG_INVALID_INTERFACE;
 755 }
 756
 757 static int handle_interface_list_command(struct command_context_s *cmd_ctx,
 758                 char *cmd, char **args, int argc)
 759 {
 760         if (strcmp(cmd, "interface_list") == 0 && argc > 0)
 761                 return ERROR_COMMAND_SYNTAX_ERROR;
 762
 763         command_print(cmd_ctx, "The following JTAG interfaces are available:");
 764         for (unsigned i = 0; NULL != jtag_interfaces[i]; i++)
 765         {
 766                 const char *name = jtag_interfaces[i]->name;
 767                 command_print(cmd_ctx, "%u: %s", i + 1, name);
 768         }
 769
 770         return ERROR_OK;
 771 }
 772
 773 static int handle_jtag_device_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
 774 {
 775         int e;
 776         char buf[1024];
 777         Jim_Obj *newargs[ 10 ];
 778         /*
 779          * CONVERT SYNTAX
 780          * argv[-1] = command
 781          * argv[ 0] = ir length
 782          * argv[ 1] = ir capture
 783          * argv[ 2] = ir mask
 784          * argv[ 3] = not actually used by anything but in the docs
 785          */
 786
 787         if( argc < 4 ){
 788                 command_print( cmd_ctx, "OLD DEPRECATED SYNTAX: Please use the NEW syntax");
 789                 return ERROR_OK;
 790         }
 791         command_print( cmd_ctx, "OLD SYNTAX: DEPRECATED - translating to new syntax");
 792         command_print( cmd_ctx, "jtag newtap CHIP TAP -irlen %s -ircapture %s -irvalue %s",
 793                                    args[0],
 794                                    args[1],
 795                                    args[2] );
 796         command_print( cmd_ctx, "Example: STM32 has 2 taps, the cortexM3(len4) + boundaryscan(len5)");
 797         command_print( cmd_ctx, "jtag newtap stm32 cortexm3 ....., thus creating the tap: \"stm32.cortexm3\"");
 798         command_print( cmd_ctx, "jtag newtap stm32 boundary ....., and the tap: \"stm32.boundary\"");
 799         command_print( cmd_ctx, "And then refer to the taps by the dotted name.");
 800
 801         newargs[0] = Jim_NewStringObj( interp, "jtag", -1   );
 802         newargs[1] = Jim_NewStringObj( interp, "newtap", -1 );
 803         sprintf( buf, "chip%d", jtag_tap_count() );
 804         newargs[2] = Jim_NewStringObj( interp, buf, -1 );
 805         sprintf( buf, "tap%d", jtag_tap_count() );
 806         newargs[3] = Jim_NewStringObj( interp, buf, -1  );
 807         newargs[4] = Jim_NewStringObj( interp, "-irlen", -1  );
 808         newargs[5] = Jim_NewStringObj( interp, args[0], -1  );
 809         newargs[6] = Jim_NewStringObj( interp, "-ircapture", -1  );
 810         newargs[7] = Jim_NewStringObj( interp, args[1], -1  );
 811         newargs[8] = Jim_NewStringObj( interp, "-irmask", -1  );
 812         newargs[9] = Jim_NewStringObj( interp, args[2], -1  );
 813
 814         command_print( cmd_ctx, "NEW COMMAND:");
 815         sprintf( buf, "%s %s %s %s %s %s %s %s %s %s",
 816                          Jim_GetString( newargs[0], NULL ),
 817                          Jim_GetString( newargs[1], NULL ),
 818                          Jim_GetString( newargs[2], NULL ),
 819                          Jim_GetString( newargs[3], NULL ),
 820                          Jim_GetString( newargs[4], NULL ),
 821                          Jim_GetString( newargs[5], NULL ),
 822                          Jim_GetString( newargs[6], NULL ),
 823                          Jim_GetString( newargs[7], NULL ),
 824                          Jim_GetString( newargs[8], NULL ),
 825                          Jim_GetString( newargs[9], NULL ) );
 826
 827         e = jim_jtag_command( interp, 10, newargs );
 828         if( e != JIM_OK ){
 829                 command_print( cmd_ctx, "%s", Jim_GetString( Jim_GetResult(interp), NULL ) );
 830         }
 831         return e;
 832 }
 833
 834 static int handle_scan_chain_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
 835 {
 836         jtag_tap_t *tap;
 837
 838         tap = jtag_all_taps();
 839         command_print(cmd_ctx, "     TapName            | Enabled |   IdCode      Expected    IrLen IrCap  IrMask Instr     ");
 840         command_print(cmd_ctx, "---|--------------------|---------|------------|------------|------|------|------|---------");
 841
 842         while( tap ){
 843                 u32 expected, expected_mask, cur_instr, ii;
 844                 expected = buf_get_u32(tap->expected, 0, tap->ir_length);
 845                 expected_mask = buf_get_u32(tap->expected_mask, 0, tap->ir_length);
 846                 cur_instr = buf_get_u32(tap->cur_instr, 0, tap->ir_length);
 847
 848                 command_print(cmd_ctx,
 849                                           "%2d | %-18s |    %c    | 0x%08x | 0x%08x | 0x%02x | 0x%02x | 0x%02x | 0x%02x",
 850                                           tap->abs_chain_position,
 851                                           tap->dotted_name,
 852                                           tap->enabled ? 'Y' : 'n',
 853                                           tap->idcode,
 854                                           (tap->expected_ids_cnt > 0 ? tap->expected_ids[0] : 0),
 855                                           tap->ir_length,
 856                                           expected,
 857                                           expected_mask,
 858                                           cur_instr);
 859
 860                 for (ii = 1; ii < tap->expected_ids_cnt; ii++) {
 861                         command_print(cmd_ctx, "   |                    |         |            | 0x%08x |      |      |      |         ",
 862                                                   tap->expected_ids[ii]);
 863                 }
 864
 865                 tap = tap->next_tap;
 866         }
 867
 868         return ERROR_OK;
 869 }
 870
 871 static int handle_reset_config_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
 872 {
 873         int new_cfg = 0;
 874         int mask = 0;
 875
 876         if (argc < 1)
 877                 return ERROR_COMMAND_SYNTAX_ERROR;
 878
 879         /* Original versions cared about the order of these tokens:
 880          *   reset_config signals [combination [trst_type [srst_type]]]
 881          * They also clobbered the previous configuration even on error.
 882          *
 883          * Here we don't care about the order, and only change values
 884          * which have been explicitly specified.
 885          */
 886         for (; argc; argc--, args++) {
 887                 int tmp = 0;
 888                 int m;
 889
 890                 /* signals */
 891                 m = RESET_HAS_TRST | RESET_HAS_SRST;
 892                 if (strcmp(*args, "none") == 0)
 893                         tmp = RESET_NONE;
 894                 else if (strcmp(*args, "trst_only") == 0)
 895                         tmp = RESET_HAS_TRST;
 896                 else if (strcmp(*args, "srst_only") == 0)
 897                         tmp = RESET_HAS_SRST;
 898                 else if (strcmp(*args, "trst_and_srst") == 0)
 899                         tmp = RESET_HAS_TRST | RESET_HAS_SRST;
 900                 else
 901                         m = 0;
 902                 if (mask & m) {
 903                         LOG_ERROR("extra reset_config %s spec (%s)",
 904                                         "signal", *args);
 905                         return ERROR_INVALID_ARGUMENTS;
 906                 }
 907                 if (m)
 908                         goto next;
 909
 910                 /* combination (options for broken wiring) */
 911                 m = RESET_SRST_PULLS_TRST | RESET_TRST_PULLS_SRST;
 912                 if (strcmp(*args, "separate") == 0)
 913                         /* separate reset lines - default */;
 914                 else if (strcmp(*args, "srst_pulls_trst") == 0)
 915                         tmp |= RESET_SRST_PULLS_TRST;
 916                 else if (strcmp(*args, "trst_pulls_srst") == 0)
 917                         tmp |= RESET_TRST_PULLS_SRST;
 918                 else if (strcmp(*args, "combined") == 0)
 919                         tmp |= RESET_SRST_PULLS_TRST | RESET_TRST_PULLS_SRST;
 920                 else
 921                         m = 0;
 922                 if (mask & m) {
 923                         LOG_ERROR("extra reset_config %s spec (%s)",
 924                                         "combination", *args);
 925                         return ERROR_INVALID_ARGUMENTS;
 926                 }
 927                 if (m)
 928                         goto next;
 929
 930                 /* trst_type (NOP without HAS_TRST) */
 931                 m = RESET_TRST_OPEN_DRAIN;
 932                 if (strcmp(*args, "trst_open_drain") == 0)
 933                         tmp |= RESET_TRST_OPEN_DRAIN;
 934                 else if (strcmp(*args, "trst_push_pull") == 0)
 935                         /* push/pull from adapter - default */;
 936                 else
 937                         m = 0;
 938                 if (mask & m) {
 939                         LOG_ERROR("extra reset_config %s spec (%s)",
 940                                         "trst_type", *args);
 941                         return ERROR_INVALID_ARGUMENTS;
 942                 }
 943                 if (m)
 944                         goto next;
 945
 946                 /* srst_type (NOP without HAS_SRST) */
 947                 m |= RESET_SRST_PUSH_PULL;
 948                 if (strcmp(*args, "srst_push_pull") == 0)
 949                         tmp |= RESET_SRST_PUSH_PULL;
 950                 else if (strcmp(*args, "srst_open_drain") == 0)
 951                         /* open drain from adapter - default */;
 952                 else
 953                         m = 0;
 954                 if (mask & m) {
 955                         LOG_ERROR("extra reset_config %s spec (%s)",
 956                                         "srst_type", *args);
 957                         return ERROR_INVALID_ARGUMENTS;
 958                 }
 959                 if (m)
 960                         goto next;
 961
 962                 /* caller provided nonsense; fail */
 963                 LOG_ERROR("unknown reset_config flag (%s)", *args);
 964                 return ERROR_INVALID_ARGUMENTS;
 965
 966 next:
 967                 /* Remember the bits which were specified (mask)
 968                  * and their new values (new_cfg).
 969                  */
 970                 mask |= m;
 971                 new_cfg |= tmp;
 972         }
 973
 974         /* clear previous values of those bits, save new values */
 975         enum reset_types old_cfg = jtag_get_reset_config();
 976         old_cfg &= ~mask;
 977         new_cfg |= old_cfg;
 978         jtag_set_reset_config(new_cfg);
 979
 980         return ERROR_OK;
 981 }
 982
 983 static int handle_jtag_nsrst_delay_command(struct command_context_s *cmd_ctx,
 984                 char *cmd, char **args, int argc)
 985 {
 986         if (argc > 1)
 987                 return ERROR_COMMAND_SYNTAX_ERROR;
 988         if (argc == 1)
 989         {
 990                 unsigned delay;
 991                 int retval = parse_uint(args[0], &delay);
 992                 if (ERROR_OK != retval)
 993                         return retval;
 994                 jtag_set_nsrst_delay(delay);
 995         }
 996         command_print(cmd_ctx, "jtag_nsrst_delay: %u", jtag_get_nsrst_delay());
 997         return ERROR_OK;
 998 }
 999
1000 static int handle_jtag_ntrst_delay_command(struct command_context_s *cmd_ctx,
1001                 char *cmd, char **args, int argc)
1002 {
1003         if (argc > 1)
1004                 return ERROR_COMMAND_SYNTAX_ERROR;
1005         if (argc == 1)
1006         {
1007                 unsigned delay;
1008                 int retval = parse_uint(args[0], &delay);
1009                 if (ERROR_OK != retval)
1010                         return retval;
1011                 jtag_set_ntrst_delay(delay);
1012         }
1013         command_print(cmd_ctx, "jtag_ntrst_delay: %u", jtag_get_ntrst_delay());
1014         return ERROR_OK;
1015 }
1016
1017 static int handle_jtag_speed_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1018 {
1019         int retval = ERROR_OK;
1020
1021         if (argc > 1)
1022                 return ERROR_COMMAND_SYNTAX_ERROR;
1023         if (argc == 1)
1024         {
1025                 LOG_DEBUG("handle jtag speed");
1026
1027                 unsigned cur_speed = 0;
1028                 int retval = parse_uint(args[0], &cur_speed);
1029                 if (ERROR_OK != retval)
1030                         return retval;
1031                 retval = jtag_set_speed(cur_speed);
1032
1033         }
1034         command_print(cmd_ctx, "jtag_speed: %d", jtag_get_speed());
1035
1036         return retval;
1037 }
1038
1039 static int handle_jtag_khz_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1040 {
1041         if (argc > 1)
1042                 return ERROR_COMMAND_SYNTAX_ERROR;
1043
1044         int retval = ERROR_OK;
1045         if (argc == 1)
1046         {
1047                 unsigned khz = 0;
1048                 int retval = parse_uint(args[0], &khz);
1049                 if (ERROR_OK != retval)
1050                         return retval;
1051                 retval = jtag_config_khz(khz);
1052                 if (ERROR_OK != retval)
1053                         return retval;
1054         }
1055
1056         int cur_speed = jtag_get_speed_khz();
1057         retval = jtag_get_speed_readable(&cur_speed);
1058         if (ERROR_OK != retval)
1059                 return retval;
1060
1061         if (cur_speed)
1062                 command_print(cmd_ctx, "%d kHz", cur_speed);
1063         else
1064                 command_print(cmd_ctx, "RCLK - adaptive");
1065
1066         return retval;
1067 }
1068
1069 static int handle_jtag_reset_command(struct command_context_s *cmd_ctx,
1070                 char *cmd, char **args, int argc)
1071 {
1072         if (argc != 2)
1073                 return ERROR_COMMAND_SYNTAX_ERROR;
1074
1075         int trst = -1;
1076         if (args[0][0] == '1')
1077                 trst = 1;
1078         else if (args[0][0] == '0')
1079                 trst = 0;
1080         else
1081                 return ERROR_COMMAND_SYNTAX_ERROR;
1082
1083         int srst = -1;
1084         if (args[1][0] == '1')
1085                 srst = 1;
1086         else if (args[1][0] == '0')
1087                 srst = 0;
1088         else
1089                 return ERROR_COMMAND_SYNTAX_ERROR;
1090
1091         if (jtag_interface_init(cmd_ctx) != ERROR_OK)
1092                 return ERROR_JTAG_INIT_FAILED;
1093
1094         jtag_add_reset(trst, srst);
1095         jtag_execute_queue();
1096
1097         return ERROR_OK;
1098 }
1099
1100 static int handle_runtest_command(struct command_context_s *cmd_ctx,
1101                 char *cmd, char **args, int argc)
1102 {
1103         if (argc != 1)
1104                 return ERROR_COMMAND_SYNTAX_ERROR;
1105
1106         unsigned num_clocks;
1107         int retval = parse_uint(args[0], &num_clocks);
1108         if (ERROR_OK != retval)
1109                 return retval;
1110
1111         jtag_add_runtest(num_clocks, jtag_get_end_state());
1112         jtag_execute_queue();
1113
1114         return ERROR_OK;
1115 }
1116
1117 /*
1118  * For "irscan" or "drscan" commands, the "end" (really, "next") state
1119  * should be stable ... and *NOT* a shift state, otherwise free-running
1120  * jtag clocks could change the values latched by the update state.
1121  */
1122 static bool scan_is_safe(tap_state_t state)
1123 {
1124         switch (state)
1125         {
1126         case TAP_RESET:
1127         case TAP_IDLE:
1128         case TAP_DRPAUSE:
1129         case TAP_IRPAUSE:
1130                 return true;
1131         default:
1132                 return false;
1133         }
1134 }
1135
1136
1137 static int handle_irscan_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1138 {
1139         int i;
1140         scan_field_t *fields;
1141         jtag_tap_t *tap;
1142         tap_state_t endstate;
1143
1144         if ((argc < 2) || (argc % 2))
1145         {
1146                 return ERROR_COMMAND_SYNTAX_ERROR;
1147         }
1148
1149         /* optional "-endstate" "statename" at the end of the arguments,
1150          * so that e.g. IRPAUSE can let us load the data register before
1151          * entering RUN/IDLE to execute the instruction we load here.
1152          */
1153         endstate = TAP_IDLE;
1154
1155         if( argc >= 4 ){
1156                 /* have at least one pair of numbers. */
1157                 /* is last pair the magic text? */
1158                 if( 0 == strcmp( "-endstate", args[ argc - 2 ] ) ){
1159                         const char *cpA;
1160                         const char *cpS;
1161                         cpA = args[ argc-1 ];
1162                         for( endstate = 0 ; endstate < TAP_NUM_STATES ; endstate++ ){
1163                                 cpS = tap_state_name( endstate );
1164                                 if( 0 == strcmp( cpA, cpS ) ){
1165                                         break;
1166                                 }
1167                         }
1168                         if( endstate >= TAP_NUM_STATES ){
1169                                 return ERROR_COMMAND_SYNTAX_ERROR;
1170                         } else {
1171                                 if (!scan_is_safe(endstate))
1172                                         LOG_WARNING("irscan with unsafe "
1173                                                         "endstate \"%s\"", cpA);
1174                                 /* found - remove the last 2 args */
1175                                 argc -= 2;
1176                         }
1177                 }
1178         }
1179
1180         int num_fields = argc / 2;
1181         size_t fields_len = sizeof(scan_field_t) * num_fields;
1182         fields = malloc(fields_len);
1183         memset(fields, 0, fields_len);
1184
1185         int retval;
1186         for (i = 0; i < num_fields; i++)
1187         {
1188                 tap = jtag_tap_by_string( args[i*2] );
1189                 if (tap==NULL)
1190                 {
1191                         command_print( cmd_ctx, "Tap: %s unknown", args[i*2] );
1192                         return ERROR_FAIL;
1193                 }
1194                 int field_size = tap->ir_length;
1195                 fields[i].tap = tap;
1196                 fields[i].num_bits = field_size;
1197                 fields[i].out_value = malloc(CEIL(field_size, 8));
1198
1199                 u32 value;
1200                 retval = parse_u32(args[i * 2 + 1], &value);
1201                 if (ERROR_OK != retval)
1202                         goto error_return;
1203                 buf_set_u32(fields[i].out_value, 0, field_size, value);
1204                 fields[i].in_value = NULL;
1205         }
1206
1207         /* did we have an endstate? */
1208         jtag_add_ir_scan(num_fields, fields, endstate);
1209
1210         retval = jtag_execute_queue();
1211
1212 error_return:
1213         for (i = 0; i < num_fields; i++)
1214         {
1215                 if (NULL != fields[i].out_value)
1216                         free(fields[i].out_value);
1217         }
1218
1219         free (fields);
1220
1221         return retval;
1222 }
1223
1224 static int Jim_Command_drscan(Jim_Interp *interp, int argc, Jim_Obj *const *args)
1225 {
1226         int retval;
1227         scan_field_t *fields;
1228         int num_fields;
1229         int field_count = 0;
1230         int i, e;
1231         jtag_tap_t *tap;
1232         tap_state_t endstate;
1233
1234         /* args[1] = device
1235          * args[2] = num_bits
1236          * args[3] = hex string
1237          * ... repeat num bits and hex string ...
1238          *
1239          * .. optionally:
1240         *     args[N-2] = "-endstate"
1241          *     args[N-1] = statename
1242          */
1243         if ((argc < 4) || ((argc % 2)!=0))
1244         {
1245                 Jim_WrongNumArgs(interp, 1, args, "wrong arguments");
1246                 return JIM_ERR;
1247         }
1248
1249         endstate = TAP_IDLE;
1250
1251         script_debug(interp, "drscan", argc, args);
1252
1253         /* validate arguments as numbers */
1254         e = JIM_OK;
1255         for (i = 2; i < argc; i+=2)
1256         {
1257                 long bits;
1258                 const char *cp;
1259
1260                 e = Jim_GetLong(interp, args[i], &bits);
1261                 /* If valid - try next arg */
1262                 if( e == JIM_OK ){
1263                         continue;
1264                 }
1265
1266                 /* Not valid.. are we at the end? */
1267                 if ( ((i+2) != argc) ){
1268                         /* nope, then error */
1269                         return e;
1270                 }
1271
1272                 /* it could be: "-endstate FOO"
1273                  * e.g. DRPAUSE so we can issue more instructions
1274                  * before entering RUN/IDLE and executing them.
1275                  */
1276
1277                 /* get arg as a string. */
1278                 cp = Jim_GetString( args[i], NULL );
1279                 /* is it the magic? */
1280                 if( 0 == strcmp( "-endstate", cp ) ){
1281                         /* is the statename valid? */
1282                         cp = Jim_GetString( args[i+1], NULL );
1283
1284                         /* see if it is a valid state name */
1285                         endstate = tap_state_by_name(cp);
1286                         if( endstate < 0 ){
1287                                 /* update the error message */
1288                                 Jim_SetResult_sprintf(interp,"endstate: %s invalid", cp );
1289                         } else {
1290                                 if (!scan_is_safe(endstate))
1291                                         LOG_WARNING("drscan with unsafe "
1292                                                         "endstate \"%s\"", cp);
1293
1294                                 /* valid - so clear the error */
1295                                 e = JIM_OK;
1296                                 /* and remove the last 2 args */
1297                                 argc -= 2;
1298                         }
1299                 }
1300
1301                 /* Still an error? */
1302                 if( e != JIM_OK ){
1303                         return e; /* too bad */
1304                 }
1305         } /* validate args */
1306
1307         tap = jtag_tap_by_jim_obj( interp, args[1] );
1308         if( tap == NULL ){
1309                 return JIM_ERR;
1310         }
1311
1312         num_fields=(argc-2)/2;
1313         fields = malloc(sizeof(scan_field_t) * num_fields);
1314         for (i = 2; i < argc; i+=2)
1315         {
1316                 long bits;
1317                 int len;
1318                 const char *str;
1319
1320                 Jim_GetLong(interp, args[i], &bits);
1321                 str = Jim_GetString(args[i+1], &len);
1322
1323                 fields[field_count].tap = tap;
1324                 fields[field_count].num_bits = bits;
1325                 fields[field_count].out_value = malloc(CEIL(bits, 8));
1326                 str_to_buf(str, len, fields[field_count].out_value, bits, 0);
1327                 fields[field_count].in_value = fields[field_count].out_value;
1328                 field_count++;
1329         }
1330
1331         jtag_add_dr_scan(num_fields, fields, endstate);
1332
1333         retval = jtag_execute_queue();
1334         if (retval != ERROR_OK)
1335         {
1336                 Jim_SetResultString(interp, "drscan: jtag execute failed",-1);
1337                 return JIM_ERR;
1338         }
1339
1340         field_count=0;
1341         Jim_Obj *list = Jim_NewListObj(interp, NULL, 0);
1342         for (i = 2; i < argc; i+=2)
1343         {
1344                 long bits;
1345                 char *str;
1346
1347                 Jim_GetLong(interp, args[i], &bits);
1348                 str = buf_to_str(fields[field_count].in_value, bits, 16);
1349                 free(fields[field_count].out_value);
1350
1351                 Jim_ListAppendElement(interp, list, Jim_NewStringObj(interp, str, strlen(str)));
1352                 free(str);
1353                 field_count++;
1354         }
1355
1356         Jim_SetResult(interp, list);
1357
1358         free(fields);
1359
1360         return JIM_OK;
1361 }
1362
1363
1364 static int Jim_Command_pathmove(Jim_Interp *interp, int argc, Jim_Obj *const *args)
1365 {
1366         tap_state_t states[8];
1367
1368         if ((argc < 2) || ((size_t)argc > (sizeof(states)/sizeof(*states)+1)))
1369         {
1370                 Jim_WrongNumArgs(interp, 1, args, "wrong arguments");
1371                 return JIM_ERR;
1372         }
1373
1374         script_debug(interp, "pathmove", argc, args);
1375
1376         int i;
1377         for (i=0; i<argc-1; i++)
1378         {
1379                 const char *cp;
1380                 cp = Jim_GetString( args[i+1], NULL );
1381                 states[i] = tap_state_by_name(cp);
1382                 if( states[i] < 0 )
1383                 {
1384                         /* update the error message */
1385                         Jim_SetResult_sprintf(interp,"endstate: %s invalid", cp );
1386                         return JIM_ERR;
1387                 }
1388         }
1389
1390         if ((jtag_add_statemove(states[0]) != ERROR_OK) || ( jtag_execute_queue()!= ERROR_OK))
1391         {
1392                 Jim_SetResultString(interp, "pathmove: jtag execute failed",-1);
1393                 return JIM_ERR;
1394         }
1395
1396         jtag_add_pathmove(argc-2, states+1);
1397
1398         if (jtag_execute_queue()!= ERROR_OK)
1399         {
1400                 Jim_SetResultString(interp, "pathmove: failed",-1);
1401                 return JIM_ERR;
1402         }
1403
1404         return JIM_OK;
1405 }
1406
1407
1408 static int Jim_Command_flush_count(Jim_Interp *interp, int argc, Jim_Obj *const *args)
1409 {
1410         script_debug(interp, "flush_count", argc, args);
1411
1412         Jim_SetResult(interp, Jim_NewIntObj(interp, jtag_get_flush_queue_count()));
1413
1414         return JIM_OK;
1415 }
1416
1417
1418 static int handle_verify_ircapture_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1419 {
1420         if (argc > 1)
1421                 return ERROR_COMMAND_SYNTAX_ERROR;
1422
1423         if (argc == 1)
1424         {
1425                 if (strcmp(args[0], "enable") == 0)
1426                         jtag_set_verify_capture_ir(true);
1427                 else if (strcmp(args[0], "disable") == 0)
1428                         jtag_set_verify_capture_ir(false);
1429                 else
1430                         return ERROR_COMMAND_SYNTAX_ERROR;
1431         }
1432
1433         const char *status = jtag_will_verify_capture_ir() ? "enabled": "disabled";
1434         command_print(cmd_ctx, "verify Capture-IR is %s", status);
1435
1436         return ERROR_OK;
1437 }
1438
1439 static int handle_verify_jtag_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1440 {
1441         if (argc > 1)
1442                 return ERROR_COMMAND_SYNTAX_ERROR;
1443
1444         if (argc == 1)
1445         {
1446                 if (strcmp(args[0], "enable") == 0)
1447                         jtag_set_verify(true);
1448                 else if (strcmp(args[0], "disable") == 0)
1449                         jtag_set_verify(false);
1450                 else
1451                         return ERROR_COMMAND_SYNTAX_ERROR;
1452         }
1453
1454         const char *status = jtag_will_verify() ? "enabled": "disabled";
1455         command_print(cmd_ctx, "verify jtag capture is %s", status);
1456
1457         return ERROR_OK;
1458 }
1459
1460 static int handle_tms_sequence_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1461 {
1462         if (argc > 1)
1463                 return ERROR_COMMAND_SYNTAX_ERROR;
1464
1465         if (argc == 1)
1466         {
1467                 bool use_new_table;
1468                 if (strcmp(args[0], "short") == 0)
1469                         use_new_table = true;
1470                 else if (strcmp(args[0], "long") == 0)
1471                         use_new_table = false;
1472                 else
1473                         return ERROR_COMMAND_SYNTAX_ERROR;
1474
1475                 tap_use_new_tms_table(use_new_table);
1476         }
1477
1478         command_print(cmd_ctx, "tms sequence is  %s",
1479                         tap_uses_new_tms_table() ? "short": "long");
1480
1481         return ERROR_OK;
1482 }
1483