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   1 /***************************************************************************
   2  *   Copyright (C) 2005 by Dominic Rath                                    *
   3  *   Dominic.Rath@gmx.de                                                   *
   4  *                                                                         *
   5  *   Copyright (C) 2007-2010 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, see <http://www.gnu.org/licenses/>. *
  27  ***************************************************************************/
  28
  29 #ifdef HAVE_CONFIG_H
  30 #include "config.h"
  31 #endif
  32
  33 #include "jtag.h"
  34 #include "swd.h"
  35 #include "minidriver.h"
  36 #include "interface.h"
  37 #include "interfaces.h"
  38 #include "tcl.h"
  39
  40 #ifdef HAVE_STRINGS_H
  41 #include <strings.h>
  42 #endif
  43
  44 #include <helper/time_support.h>
  45
  46 /**
  47  * @file
  48  * Holds support for accessing JTAG-specific mechanisms from TCl scripts.
  49  */
  50
  51 static const Jim_Nvp nvp_jtag_tap_event[] = {
  52         { .value = JTAG_TRST_ASSERTED,          .name = "post-reset" },
  53         { .value = JTAG_TAP_EVENT_SETUP,        .name = "setup" },
  54         { .value = JTAG_TAP_EVENT_ENABLE,       .name = "tap-enable" },
  55         { .value = JTAG_TAP_EVENT_DISABLE,      .name = "tap-disable" },
  56
  57         { .name = NULL, .value = -1 }
  58 };
  59
  60 struct jtag_tap *jtag_tap_by_jim_obj(Jim_Interp *interp, Jim_Obj *o)
  61 {
  62         const char *cp = Jim_GetString(o, NULL);
  63         struct jtag_tap *t = cp ? jtag_tap_by_string(cp) : NULL;
  64         if (NULL == cp)
  65                 cp = "(unknown)";
  66         if (NULL == t)
  67                 Jim_SetResultFormatted(interp, "Tap '%s' could not be found", cp);
  68         return t;
  69 }
  70
  71 static bool scan_is_safe(tap_state_t state)
  72 {
  73         switch (state) {
  74             case TAP_RESET:
  75             case TAP_IDLE:
  76             case TAP_DRPAUSE:
  77             case TAP_IRPAUSE:
  78                     return true;
  79             default:
  80                     return false;
  81         }
  82 }
  83
  84 static int Jim_Command_drscan(Jim_Interp *interp, int argc, Jim_Obj *const *args)
  85 {
  86         int retval;
  87         struct scan_field *fields;
  88         int num_fields;
  89         int field_count = 0;
  90         int i, e;
  91         struct jtag_tap *tap;
  92         tap_state_t endstate;
  93
  94         /* args[1] = device
  95          * args[2] = num_bits
  96          * args[3] = hex string
  97          * ... repeat num bits and hex string ...
  98          *
  99          * .. optionally:
 100         *     args[N-2] = "-endstate"
 101          *     args[N-1] = statename
 102          */
 103         if ((argc < 4) || ((argc % 2) != 0)) {
 104                 Jim_WrongNumArgs(interp, 1, args, "wrong arguments");
 105                 return JIM_ERR;
 106         }
 107
 108         endstate = TAP_IDLE;
 109
 110         script_debug(interp, "drscan", argc, args);
 111
 112         /* validate arguments as numbers */
 113         e = JIM_OK;
 114         for (i = 2; i < argc; i += 2) {
 115                 long bits;
 116                 const char *cp;
 117
 118                 e = Jim_GetLong(interp, args[i], &bits);
 119                 /* If valid - try next arg */
 120                 if (e == JIM_OK)
 121                         continue;
 122
 123                 /* Not valid.. are we at the end? */
 124                 if (((i + 2) != argc)) {
 125                         /* nope, then error */
 126                         return e;
 127                 }
 128
 129                 /* it could be: "-endstate FOO"
 130                  * e.g. DRPAUSE so we can issue more instructions
 131                  * before entering RUN/IDLE and executing them.
 132                  */
 133
 134                 /* get arg as a string. */
 135                 cp = Jim_GetString(args[i], NULL);
 136                 /* is it the magic? */
 137                 if (0 == strcmp("-endstate", cp)) {
 138                         /* is the statename valid? */
 139                         cp = Jim_GetString(args[i + 1], NULL);
 140
 141                         /* see if it is a valid state name */
 142                         endstate = tap_state_by_name(cp);
 143                         if (endstate < 0) {
 144                                 /* update the error message */
 145                                 Jim_SetResultFormatted(interp, "endstate: %s invalid", cp);
 146                         } else {
 147                                 if (!scan_is_safe(endstate))
 148                                         LOG_WARNING("drscan with unsafe "
 149                                                 "endstate \"%s\"", cp);
 150
 151                                 /* valid - so clear the error */
 152                                 e = JIM_OK;
 153                                 /* and remove the last 2 args */
 154                                 argc -= 2;
 155                         }
 156                 }
 157
 158                 /* Still an error? */
 159                 if (e != JIM_OK)
 160                         return e;       /* too bad */
 161         }       /* validate args */
 162
 163         assert(e == JIM_OK);
 164
 165         tap = jtag_tap_by_jim_obj(interp, args[1]);
 166         if (tap == NULL)
 167                 return JIM_ERR;
 168
 169         num_fields = (argc-2)/2;
 170         if (num_fields <= 0) {
 171                 Jim_SetResultString(interp, "drscan: no scan fields supplied", -1);
 172                 return JIM_ERR;
 173         }
 174         fields = malloc(sizeof(struct scan_field) * num_fields);
 175         for (i = 2; i < argc; i += 2) {
 176                 long bits;
 177                 int len;
 178                 const char *str;
 179
 180                 Jim_GetLong(interp, args[i], &bits);
 181                 str = Jim_GetString(args[i + 1], &len);
 182
 183                 fields[field_count].num_bits = bits;
 184                 void *t = malloc(DIV_ROUND_UP(bits, 8));
 185                 fields[field_count].out_value = t;
 186                 str_to_buf(str, len, t, bits, 0);
 187                 fields[field_count].in_value = t;
 188                 field_count++;
 189         }
 190
 191         jtag_add_dr_scan(tap, num_fields, fields, endstate);
 192
 193         retval = jtag_execute_queue();
 194         if (retval != ERROR_OK) {
 195                 Jim_SetResultString(interp, "drscan: jtag execute failed", -1);
 196                 return JIM_ERR;
 197         }
 198
 199         field_count = 0;
 200         Jim_Obj *list = Jim_NewListObj(interp, NULL, 0);
 201         for (i = 2; i < argc; i += 2) {
 202                 long bits;
 203                 char *str;
 204
 205                 Jim_GetLong(interp, args[i], &bits);
 206                 str = buf_to_str(fields[field_count].in_value, bits, 16);
 207                 free(fields[field_count].in_value);
 208
 209                 Jim_ListAppendElement(interp, list, Jim_NewStringObj(interp, str, strlen(str)));
 210                 free(str);
 211                 field_count++;
 212         }
 213
 214         Jim_SetResult(interp, list);
 215
 216         free(fields);
 217
 218         return JIM_OK;
 219 }
 220
 221
 222 static int Jim_Command_pathmove(Jim_Interp *interp, int argc, Jim_Obj *const *args)
 223 {
 224         tap_state_t states[8];
 225
 226         if ((argc < 2) || ((size_t)argc > (ARRAY_SIZE(states) + 1))) {
 227                 Jim_WrongNumArgs(interp, 1, args, "wrong arguments");
 228                 return JIM_ERR;
 229         }
 230
 231         script_debug(interp, "pathmove", argc, args);
 232
 233         int i;
 234         for (i = 0; i < argc-1; i++) {
 235                 const char *cp;
 236                 cp = Jim_GetString(args[i + 1], NULL);
 237                 states[i] = tap_state_by_name(cp);
 238                 if (states[i] < 0) {
 239                         /* update the error message */
 240                         Jim_SetResultFormatted(interp, "endstate: %s invalid", cp);
 241                         return JIM_ERR;
 242                 }
 243         }
 244
 245         if ((jtag_add_statemove(states[0]) != ERROR_OK) || (jtag_execute_queue() != ERROR_OK)) {
 246                 Jim_SetResultString(interp, "pathmove: jtag execute failed", -1);
 247                 return JIM_ERR;
 248         }
 249
 250         jtag_add_pathmove(argc - 2, states + 1);
 251
 252         if (jtag_execute_queue() != ERROR_OK) {
 253                 Jim_SetResultString(interp, "pathmove: failed", -1);
 254                 return JIM_ERR;
 255         }
 256
 257         return JIM_OK;
 258 }
 259
 260
 261 static int Jim_Command_flush_count(Jim_Interp *interp, int argc, Jim_Obj *const *args)
 262 {
 263         script_debug(interp, "flush_count", argc, args);
 264
 265         Jim_SetResult(interp, Jim_NewIntObj(interp, jtag_get_flush_queue_count()));
 266
 267         return JIM_OK;
 268 }
 269
 270 /* REVISIT Just what about these should "move" ... ?
 271  * These registrations, into the main JTAG table?
 272  *
 273  * There's a minor compatibility issue, these all show up twice;
 274  * that's not desirable:
 275  *  - jtag drscan ... NOT DOCUMENTED!
 276  *  - drscan ...
 277  *
 278  * The "irscan" command (for example) doesn't show twice.
 279  */
 280 static const struct command_registration jtag_command_handlers_to_move[] = {
 281         {
 282                 .name = "drscan",
 283                 .mode = COMMAND_EXEC,
 284                 .jim_handler = Jim_Command_drscan,
 285                 .help = "Execute Data Register (DR) scan for one TAP.  "
 286                         "Other TAPs must be in BYPASS mode.",
 287                 .usage = "tap_name [num_bits value]* ['-endstate' state_name]",
 288         },
 289         {
 290                 .name = "flush_count",
 291                 .mode = COMMAND_EXEC,
 292                 .jim_handler = Jim_Command_flush_count,
 293                 .help = "Returns the number of times the JTAG queue "
 294                         "has been flushed.",
 295         },
 296         {
 297                 .name = "pathmove",
 298                 .mode = COMMAND_EXEC,
 299                 .jim_handler = Jim_Command_pathmove,
 300                 .usage = "start_state state1 [state2 [state3 ...]]",
 301                 .help = "Move JTAG state machine from current state "
 302                         "(start_state) to state1, then state2, state3, etc.",
 303         },
 304         COMMAND_REGISTRATION_DONE
 305 };
 306
 307
 308 enum jtag_tap_cfg_param {
 309         JCFG_EVENT
 310 };
 311
 312 static Jim_Nvp nvp_config_opts[] = {
 313         { .name = "-event",      .value = JCFG_EVENT },
 314
 315         { .name = NULL,          .value = -1 }
 316 };
 317
 318 static int jtag_tap_configure_event(Jim_GetOptInfo *goi, struct jtag_tap *tap)
 319 {
 320         if (goi->argc == 0) {
 321                 Jim_WrongNumArgs(goi->interp, goi->argc, goi->argv, "-event <event-name> ...");
 322                 return JIM_ERR;
 323         }
 324
 325         Jim_Nvp *n;
 326         int e = Jim_GetOpt_Nvp(goi, nvp_jtag_tap_event, &n);
 327         if (e != JIM_OK) {
 328                 Jim_GetOpt_NvpUnknown(goi, nvp_jtag_tap_event, 1);
 329                 return e;
 330         }
 331
 332         if (goi->isconfigure) {
 333                 if (goi->argc != 1) {
 334                         Jim_WrongNumArgs(goi->interp,
 335                                 goi->argc,
 336                                 goi->argv,
 337                                 "-event <event-name> <event-body>");
 338                         return JIM_ERR;
 339                 }
 340         } else {
 341                 if (goi->argc != 0) {
 342                         Jim_WrongNumArgs(goi->interp, goi->argc, goi->argv, "-event <event-name>");
 343                         return JIM_ERR;
 344                 }
 345         }
 346
 347         struct jtag_tap_event_action *jteap  = tap->event_action;
 348         /* replace existing event body */
 349         bool found = false;
 350         while (jteap) {
 351                 if (jteap->event == (enum jtag_event)n->value) {
 352                         found = true;
 353                         break;
 354                 }
 355                 jteap = jteap->next;
 356         }
 357
 358         Jim_SetEmptyResult(goi->interp);
 359
 360         if (goi->isconfigure) {
 361                 if (!found)
 362                         jteap = calloc(1, sizeof(*jteap));
 363                 else if (NULL != jteap->body)
 364                         Jim_DecrRefCount(goi->interp, jteap->body);
 365
 366                 jteap->interp = goi->interp;
 367                 jteap->event = n->value;
 368
 369                 Jim_Obj *o;
 370                 Jim_GetOpt_Obj(goi, &o);
 371                 jteap->body = Jim_DuplicateObj(goi->interp, o);
 372                 Jim_IncrRefCount(jteap->body);
 373
 374                 if (!found) {
 375                         /* add to head of event list */
 376                         jteap->next = tap->event_action;
 377                         tap->event_action = jteap;
 378                 }
 379         } else if (found) {
 380                 jteap->interp = goi->interp;
 381                 Jim_SetResult(goi->interp,
 382                         Jim_DuplicateObj(goi->interp, jteap->body));
 383         }
 384         return JIM_OK;
 385 }
 386
 387 static int jtag_tap_configure_cmd(Jim_GetOptInfo *goi, struct jtag_tap *tap)
 388 {
 389         /* parse config or cget options */
 390         while (goi->argc > 0) {
 391                 Jim_SetEmptyResult(goi->interp);
 392
 393                 Jim_Nvp *n;
 394                 int e = Jim_GetOpt_Nvp(goi, nvp_config_opts, &n);
 395                 if (e != JIM_OK) {
 396                         Jim_GetOpt_NvpUnknown(goi, nvp_config_opts, 0);
 397                         return e;
 398                 }
 399
 400                 switch (n->value) {
 401                         case JCFG_EVENT:
 402                                 e = jtag_tap_configure_event(goi, tap);
 403                                 if (e != JIM_OK)
 404                                         return e;
 405                                 break;
 406                         default:
 407                                 Jim_SetResultFormatted(goi->interp, "unknown event: %s", n->name);
 408                                 return JIM_ERR;
 409                 }
 410         }
 411
 412         return JIM_OK;
 413 }
 414
 415 static int is_bad_irval(int ir_length, jim_wide w)
 416 {
 417         jim_wide v = 1;
 418
 419         v <<= ir_length;
 420         v -= 1;
 421         v = ~v;
 422         return (w & v) != 0;
 423 }
 424
 425 static int jim_newtap_expected_id(Jim_Nvp *n, Jim_GetOptInfo *goi,
 426         struct jtag_tap *pTap)
 427 {
 428         jim_wide w;
 429         int e = Jim_GetOpt_Wide(goi, &w);
 430         if (e != JIM_OK) {
 431                 Jim_SetResultFormatted(goi->interp, "option: %s bad parameter", n->name);
 432                 return e;
 433         }
 434
 435         uint32_t *p = realloc(pTap->expected_ids,
 436                               (pTap->expected_ids_cnt + 1) * sizeof(uint32_t));
 437         if (!p) {
 438                 Jim_SetResultFormatted(goi->interp, "no memory");
 439                 return JIM_ERR;
 440         }
 441
 442         pTap->expected_ids = p;
 443         pTap->expected_ids[pTap->expected_ids_cnt++] = w;
 444
 445         return JIM_OK;
 446 }
 447
 448 #define NTAP_OPT_IRLEN     0
 449 #define NTAP_OPT_IRMASK    1
 450 #define NTAP_OPT_IRCAPTURE 2
 451 #define NTAP_OPT_ENABLED   3
 452 #define NTAP_OPT_DISABLED  4
 453 #define NTAP_OPT_EXPECTED_ID 5
 454 #define NTAP_OPT_VERSION   6
 455
 456 static int jim_newtap_ir_param(Jim_Nvp *n, Jim_GetOptInfo *goi,
 457         struct jtag_tap *pTap)
 458 {
 459         jim_wide w;
 460         int e = Jim_GetOpt_Wide(goi, &w);
 461         if (e != JIM_OK) {
 462                 Jim_SetResultFormatted(goi->interp,
 463                         "option: %s bad parameter", n->name);
 464                 return e;
 465         }
 466         switch (n->value) {
 467             case NTAP_OPT_IRLEN:
 468                     if (w > (jim_wide) (8 * sizeof(pTap->ir_capture_value))) {
 469                             LOG_WARNING("%s: huge IR length %d",
 470                                     pTap->dotted_name, (int) w);
 471                     }
 472                     pTap->ir_length = w;
 473                     break;
 474             case NTAP_OPT_IRMASK:
 475                     if (is_bad_irval(pTap->ir_length, w)) {
 476                             LOG_ERROR("%s: IR mask %x too big",
 477                                     pTap->dotted_name,
 478                                     (int) w);
 479                             return JIM_ERR;
 480                     }
 481                     if ((w & 3) != 3)
 482                             LOG_WARNING("%s: nonstandard IR mask", pTap->dotted_name);
 483                     pTap->ir_capture_mask = w;
 484                     break;
 485             case NTAP_OPT_IRCAPTURE:
 486                     if (is_bad_irval(pTap->ir_length, w)) {
 487                             LOG_ERROR("%s: IR capture %x too big",
 488                                     pTap->dotted_name, (int) w);
 489                             return JIM_ERR;
 490                     }
 491                     if ((w & 3) != 1)
 492                             LOG_WARNING("%s: nonstandard IR value",
 493                                     pTap->dotted_name);
 494                     pTap->ir_capture_value = w;
 495                     break;
 496             default:
 497                     return JIM_ERR;
 498         }
 499         return JIM_OK;
 500 }
 501
 502 static int jim_newtap_cmd(Jim_GetOptInfo *goi)
 503 {
 504         struct jtag_tap *pTap;
 505         int x;
 506         int e;
 507         Jim_Nvp *n;
 508         char *cp;
 509         const Jim_Nvp opts[] = {
 510                 { .name = "-irlen",       .value = NTAP_OPT_IRLEN },
 511                 { .name = "-irmask",       .value = NTAP_OPT_IRMASK },
 512                 { .name = "-ircapture",       .value = NTAP_OPT_IRCAPTURE },
 513                 { .name = "-enable",       .value = NTAP_OPT_ENABLED },
 514                 { .name = "-disable",       .value = NTAP_OPT_DISABLED },
 515                 { .name = "-expected-id",       .value = NTAP_OPT_EXPECTED_ID },
 516                 { .name = "-ignore-version",       .value = NTAP_OPT_VERSION },
 517                 { .name = NULL,       .value = -1 },
 518         };
 519
 520         pTap = calloc(1, sizeof(struct jtag_tap));
 521         if (!pTap) {
 522                 Jim_SetResultFormatted(goi->interp, "no memory");
 523                 return JIM_ERR;
 524         }
 525
 526         /*
 527          * we expect CHIP + TAP + OPTIONS
 528          * */
 529         if (goi->argc < 3) {
 530                 Jim_SetResultFormatted(goi->interp, "Missing CHIP TAP OPTIONS ....");
 531                 free(pTap);
 532                 return JIM_ERR;
 533         }
 534
 535         const char *tmp;
 536         Jim_GetOpt_String(goi, &tmp, NULL);
 537         pTap->chip = strdup(tmp);
 538
 539         Jim_GetOpt_String(goi, &tmp, NULL);
 540         pTap->tapname = strdup(tmp);
 541
 542         /* name + dot + name + null */
 543         x = strlen(pTap->chip) + 1 + strlen(pTap->tapname) + 1;
 544         cp = malloc(x);
 545         sprintf(cp, "%s.%s", pTap->chip, pTap->tapname);
 546         pTap->dotted_name = cp;
 547
 548         LOG_DEBUG("Creating New Tap, Chip: %s, Tap: %s, Dotted: %s, %d params",
 549                 pTap->chip, pTap->tapname, pTap->dotted_name, goi->argc);
 550
 551         if (!transport_is_jtag()) {
 552                 /* SWD doesn't require any JTAG tap parameters */
 553                 pTap->enabled = true;
 554                 jtag_tap_init(pTap);
 555                 return JIM_OK;
 556         }
 557
 558         /* IEEE specifies that the two LSBs of an IR scan are 01, so make
 559          * that the default.  The "-ircapture" and "-irmask" options are only
 560          * needed to cope with nonstandard TAPs, or to specify more bits.
 561          */
 562         pTap->ir_capture_mask = 0x03;
 563         pTap->ir_capture_value = 0x01;
 564
 565         while (goi->argc) {
 566                 e = Jim_GetOpt_Nvp(goi, opts, &n);
 567                 if (e != JIM_OK) {
 568                         Jim_GetOpt_NvpUnknown(goi, opts, 0);
 569                         free(cp);
 570                         free(pTap);
 571                         return e;
 572                 }
 573                 LOG_DEBUG("Processing option: %s", n->name);
 574                 switch (n->value) {
 575                     case NTAP_OPT_ENABLED:
 576                             pTap->disabled_after_reset = false;
 577                             break;
 578                     case NTAP_OPT_DISABLED:
 579                             pTap->disabled_after_reset = true;
 580                             break;
 581                     case NTAP_OPT_EXPECTED_ID:
 582                             e = jim_newtap_expected_id(n, goi, pTap);
 583                             if (JIM_OK != e) {
 584                                     free(cp);
 585                                     free(pTap);
 586                                     return e;
 587                             }
 588                             break;
 589                     case NTAP_OPT_IRLEN:
 590                     case NTAP_OPT_IRMASK:
 591                     case NTAP_OPT_IRCAPTURE:
 592                             e = jim_newtap_ir_param(n, goi, pTap);
 593                             if (JIM_OK != e) {
 594                                     free(cp);
 595                                     free(pTap);
 596                                     return e;
 597                             }
 598                             break;
 599                     case NTAP_OPT_VERSION:
 600                             pTap->ignore_version = true;
 601                             break;
 602                 }       /* switch (n->value) */
 603         }       /* while (goi->argc) */
 604
 605         /* default is enabled-after-reset */
 606         pTap->enabled = !pTap->disabled_after_reset;
 607
 608         /* Did all the required option bits get cleared? */
 609         if (pTap->ir_length != 0) {
 610                 jtag_tap_init(pTap);
 611                 return JIM_OK;
 612         }
 613
 614         Jim_SetResultFormatted(goi->interp,
 615                 "newtap: %s missing IR length",
 616                 pTap->dotted_name);
 617         jtag_tap_free(pTap);
 618         return JIM_ERR;
 619 }
 620
 621 static void jtag_tap_handle_event(struct jtag_tap *tap, enum jtag_event e)
 622 {
 623         struct jtag_tap_event_action *jteap;
 624
 625         for (jteap = tap->event_action; jteap != NULL; jteap = jteap->next) {
 626                 if (jteap->event != e)
 627                         continue;
 628
 629                 Jim_Nvp *nvp = Jim_Nvp_value2name_simple(nvp_jtag_tap_event, e);
 630                 LOG_DEBUG("JTAG tap: %s event: %d (%s)\n\taction: %s",
 631                         tap->dotted_name, e, nvp->name,
 632                         Jim_GetString(jteap->body, NULL));
 633
 634                 if (Jim_EvalObj(jteap->interp, jteap->body) != JIM_OK) {
 635                         Jim_MakeErrorMessage(jteap->interp);
 636                         LOG_USER("%s", Jim_GetString(Jim_GetResult(jteap->interp), NULL));
 637                         continue;
 638                 }
 639
 640                 switch (e) {
 641                     case JTAG_TAP_EVENT_ENABLE:
 642                     case JTAG_TAP_EVENT_DISABLE:
 643                                 /* NOTE:  we currently assume the handlers
 644                                  * can't fail.  Right here is where we should
 645                                  * really be verifying the scan chains ...
 646                                  */
 647                             tap->enabled = (e == JTAG_TAP_EVENT_ENABLE);
 648                             LOG_INFO("JTAG tap: %s %s", tap->dotted_name,
 649                                 tap->enabled ? "enabled" : "disabled");
 650                             break;
 651                     default:
 652                             break;
 653                 }
 654         }
 655 }
 656
 657 static int jim_jtag_arp_init(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
 658 {
 659         Jim_GetOptInfo goi;
 660         Jim_GetOpt_Setup(&goi, interp, argc-1, argv + 1);
 661         if (goi.argc != 0) {
 662                 Jim_WrongNumArgs(goi.interp, 1, goi.argv-1, "(no params)");
 663                 return JIM_ERR;
 664         }
 665         struct command_context *context = current_command_context(interp);
 666         int e = jtag_init_inner(context);
 667         if (e != ERROR_OK) {
 668                 Jim_Obj *eObj = Jim_NewIntObj(goi.interp, e);
 669                 Jim_SetResultFormatted(goi.interp, "error: %#s", eObj);
 670                 Jim_FreeNewObj(goi.interp, eObj);
 671                 return JIM_ERR;
 672         }
 673         return JIM_OK;
 674 }
 675
 676 static int jim_jtag_arp_init_reset(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
 677 {
 678         int e = ERROR_OK;
 679         Jim_GetOptInfo goi;
 680         Jim_GetOpt_Setup(&goi, interp, argc-1, argv + 1);
 681         if (goi.argc != 0) {
 682                 Jim_WrongNumArgs(goi.interp, 1, goi.argv-1, "(no params)");
 683                 return JIM_ERR;
 684         }
 685         struct command_context *context = current_command_context(interp);
 686         if (transport_is_jtag())
 687                 e = jtag_init_reset(context);
 688         else if (transport_is_swd())
 689                 e = swd_init_reset(context);
 690
 691         if (e != ERROR_OK) {
 692                 Jim_Obj *eObj = Jim_NewIntObj(goi.interp, e);
 693                 Jim_SetResultFormatted(goi.interp, "error: %#s", eObj);
 694                 Jim_FreeNewObj(goi.interp, eObj);
 695                 return JIM_ERR;
 696         }
 697         return JIM_OK;
 698 }
 699
 700 int jim_jtag_newtap(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
 701 {
 702         Jim_GetOptInfo goi;
 703         Jim_GetOpt_Setup(&goi, interp, argc-1, argv + 1);
 704         return jim_newtap_cmd(&goi);
 705 }
 706
 707 static bool jtag_tap_enable(struct jtag_tap *t)
 708 {
 709         if (t->enabled)
 710                 return false;
 711         jtag_tap_handle_event(t, JTAG_TAP_EVENT_ENABLE);
 712         if (!t->enabled)
 713                 return false;
 714
 715         /* FIXME add JTAG sanity checks, w/o TLR
 716          *  - scan chain length grew by one (this)
 717          *  - IDs and IR lengths are as expected
 718          */
 719         jtag_call_event_callbacks(JTAG_TAP_EVENT_ENABLE);
 720         return true;
 721 }
 722 static bool jtag_tap_disable(struct jtag_tap *t)
 723 {
 724         if (!t->enabled)
 725                 return false;
 726         jtag_tap_handle_event(t, JTAG_TAP_EVENT_DISABLE);
 727         if (t->enabled)
 728                 return false;
 729
 730         /* FIXME add JTAG sanity checks, w/o TLR
 731          *  - scan chain length shrank by one (this)
 732          *  - IDs and IR lengths are as expected
 733          */
 734         jtag_call_event_callbacks(JTAG_TAP_EVENT_DISABLE);
 735         return true;
 736 }
 737
 738 int jim_jtag_tap_enabler(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
 739 {
 740         const char *cmd_name = Jim_GetString(argv[0], NULL);
 741         Jim_GetOptInfo goi;
 742         Jim_GetOpt_Setup(&goi, interp, argc-1, argv + 1);
 743         if (goi.argc != 1) {
 744                 Jim_SetResultFormatted(goi.interp, "usage: %s <name>", cmd_name);
 745                 return JIM_ERR;
 746         }
 747
 748         struct jtag_tap *t;
 749
 750         t = jtag_tap_by_jim_obj(goi.interp, goi.argv[0]);
 751         if (t == NULL)
 752                 return JIM_ERR;
 753
 754         if (strcasecmp(cmd_name, "tapisenabled") == 0) {
 755                 /* do nothing, just return the value */
 756         } else if (strcasecmp(cmd_name, "tapenable") == 0) {
 757                 if (!jtag_tap_enable(t)) {
 758                         LOG_WARNING("failed to enable tap %s", t->dotted_name);
 759                         return JIM_ERR;
 760                 }
 761         } else if (strcasecmp(cmd_name, "tapdisable") == 0) {
 762                 if (!jtag_tap_disable(t)) {
 763                         LOG_WARNING("failed to disable tap %s", t->dotted_name);
 764                         return JIM_ERR;
 765                 }
 766         } else {
 767                 LOG_ERROR("command '%s' unknown", cmd_name);
 768                 return JIM_ERR;
 769         }
 770         bool e = t->enabled;
 771         Jim_SetResult(goi.interp, Jim_NewIntObj(goi.interp, e));
 772         return JIM_OK;
 773 }
 774
 775 int jim_jtag_configure(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
 776 {
 777         const char *cmd_name = Jim_GetString(argv[0], NULL);
 778         Jim_GetOptInfo goi;
 779         Jim_GetOpt_Setup(&goi, interp, argc-1, argv + 1);
 780         goi.isconfigure = !strcmp(cmd_name, "configure");
 781         if (goi.argc < 2 + goi.isconfigure) {
 782                 Jim_WrongNumArgs(goi.interp, 0, NULL,
 783                         "<tap_name> <attribute> ...");
 784                 return JIM_ERR;
 785         }
 786
 787         struct jtag_tap *t;
 788
 789         Jim_Obj *o;
 790         Jim_GetOpt_Obj(&goi, &o);
 791         t = jtag_tap_by_jim_obj(goi.interp, o);
 792         if (t == NULL)
 793                 return JIM_ERR;
 794
 795         return jtag_tap_configure_cmd(&goi, t);
 796 }
 797
 798 static int jim_jtag_names(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
 799 {
 800         Jim_GetOptInfo goi;
 801         Jim_GetOpt_Setup(&goi, interp, argc-1, argv + 1);
 802         if (goi.argc != 0) {
 803                 Jim_WrongNumArgs(goi.interp, 1, goi.argv, "Too many parameters");
 804                 return JIM_ERR;
 805         }
 806         Jim_SetResult(goi.interp, Jim_NewListObj(goi.interp, NULL, 0));
 807         struct jtag_tap *tap;
 808
 809         for (tap = jtag_all_taps(); tap; tap = tap->next_tap) {
 810                 Jim_ListAppendElement(goi.interp,
 811                         Jim_GetResult(goi.interp),
 812                         Jim_NewStringObj(goi.interp,
 813                                 tap->dotted_name, -1));
 814         }
 815         return JIM_OK;
 816 }
 817
 818 COMMAND_HANDLER(handle_jtag_init_command)
 819 {
 820         if (CMD_ARGC != 0)
 821                 return ERROR_COMMAND_SYNTAX_ERROR;
 822
 823         static bool jtag_initialized;
 824         if (jtag_initialized) {
 825                 LOG_INFO("'jtag init' has already been called");
 826                 return ERROR_OK;
 827         }
 828         jtag_initialized = true;
 829
 830         LOG_DEBUG("Initializing jtag devices...");
 831         return jtag_init(CMD_CTX);
 832 }
 833
 834 static const struct command_registration jtag_subcommand_handlers[] = {
 835         {
 836                 .name = "init",
 837                 .mode = COMMAND_ANY,
 838                 .handler = handle_jtag_init_command,
 839                 .help = "initialize jtag scan chain",
 840                 .usage = ""
 841         },
 842         {
 843                 .name = "arp_init",
 844                 .mode = COMMAND_ANY,
 845                 .jim_handler = jim_jtag_arp_init,
 846                 .help = "Validates JTAG scan chain against the list of "
 847                         "declared TAPs using just the four standard JTAG "
 848                         "signals.",
 849         },
 850         {
 851                 .name = "arp_init-reset",
 852                 .mode = COMMAND_ANY,
 853                 .jim_handler = jim_jtag_arp_init_reset,
 854                 .help = "Uses TRST and SRST to try resetting everything on "
 855                         "the JTAG scan chain, then performs 'jtag arp_init'."
 856         },
 857         {
 858                 .name = "newtap",
 859                 .mode = COMMAND_CONFIG,
 860                 .jim_handler = jim_jtag_newtap,
 861                 .help = "Create a new TAP instance named basename.tap_type, "
 862                         "and appends it to the scan chain.",
 863                 .usage = "basename tap_type '-irlen' count "
 864                         "['-enable'|'-disable'] "
 865                         "['-expected_id' number] "
 866                         "['-ignore-version'] "
 867                         "['-ircapture' number] "
 868                         "['-mask' number] ",
 869         },
 870         {
 871                 .name = "tapisenabled",
 872                 .mode = COMMAND_EXEC,
 873                 .jim_handler = jim_jtag_tap_enabler,
 874                 .help = "Returns a Tcl boolean (0/1) indicating whether "
 875                         "the TAP is enabled (1) or not (0).",
 876                 .usage = "tap_name",
 877         },
 878         {
 879                 .name = "tapenable",
 880                 .mode = COMMAND_EXEC,
 881                 .jim_handler = jim_jtag_tap_enabler,
 882                 .help = "Try to enable the specified TAP using the "
 883                         "'tap-enable' TAP event.",
 884                 .usage = "tap_name",
 885         },
 886         {
 887                 .name = "tapdisable",
 888                 .mode = COMMAND_EXEC,
 889                 .jim_handler = jim_jtag_tap_enabler,
 890                 .help = "Try to disable the specified TAP using the "
 891                         "'tap-disable' TAP event.",
 892                 .usage = "tap_name",
 893         },
 894         {
 895                 .name = "configure",
 896                 .mode = COMMAND_EXEC,
 897                 .jim_handler = jim_jtag_configure,
 898                 .help = "Provide a Tcl handler for the specified "
 899                         "TAP event.",
 900                 .usage = "tap_name '-event' event_name handler",
 901         },
 902         {
 903                 .name = "cget",
 904                 .mode = COMMAND_EXEC,
 905                 .jim_handler = jim_jtag_configure,
 906                 .help = "Return any Tcl handler for the specified "
 907                         "TAP event.",
 908                 .usage = "tap_name '-event' event_name",
 909         },
 910         {
 911                 .name = "names",
 912                 .mode = COMMAND_ANY,
 913                 .jim_handler = jim_jtag_names,
 914                 .help = "Returns list of all JTAG tap names.",
 915         },
 916         {
 917                 .chain = jtag_command_handlers_to_move,
 918         },
 919         COMMAND_REGISTRATION_DONE
 920 };
 921
 922 void jtag_notify_event(enum jtag_event event)
 923 {
 924         struct jtag_tap *tap;
 925
 926         for (tap = jtag_all_taps(); tap; tap = tap->next_tap)
 927                 jtag_tap_handle_event(tap, event);
 928 }
 929
 930
 931 COMMAND_HANDLER(handle_scan_chain_command)
 932 {
 933         struct jtag_tap *tap;
 934         char expected_id[12];
 935
 936         tap = jtag_all_taps();
 937         command_print(CMD_CTX,
 938                 "   TapName             Enabled  IdCode     Expected   IrLen IrCap IrMask");
 939         command_print(CMD_CTX,
 940                 "-- ------------------- -------- ---------- ---------- ----- ----- ------");
 941
 942         while (tap) {
 943                 uint32_t expected, expected_mask, ii;
 944
 945                 snprintf(expected_id, sizeof expected_id, "0x%08x",
 946                         (unsigned)((tap->expected_ids_cnt > 0)
 947                                    ? tap->expected_ids[0]
 948                                    : 0));
 949                 if (tap->ignore_version)
 950                         expected_id[2] = '*';
 951
 952                 expected = buf_get_u32(tap->expected, 0, tap->ir_length);
 953                 expected_mask = buf_get_u32(tap->expected_mask, 0, tap->ir_length);
 954
 955                 command_print(CMD_CTX,
 956                         "%2d %-18s     %c     0x%08x %s %5d 0x%02x  0x%02x",
 957                         tap->abs_chain_position,
 958                         tap->dotted_name,
 959                         tap->enabled ? 'Y' : 'n',
 960                         (unsigned int)(tap->idcode),
 961                         expected_id,
 962                         (unsigned int)(tap->ir_length),
 963                         (unsigned int)(expected),
 964                         (unsigned int)(expected_mask));
 965
 966                 for (ii = 1; ii < tap->expected_ids_cnt; ii++) {
 967                         snprintf(expected_id, sizeof expected_id, "0x%08x",
 968                                 (unsigned) tap->expected_ids[ii]);
 969                         if (tap->ignore_version)
 970                                 expected_id[2] = '*';
 971
 972                         command_print(CMD_CTX,
 973                                 "                                           %s",
 974                                 expected_id);
 975                 }
 976
 977                 tap = tap->next_tap;
 978         }
 979
 980         return ERROR_OK;
 981 }
 982
 983 COMMAND_HANDLER(handle_jtag_ntrst_delay_command)
 984 {
 985         if (CMD_ARGC > 1)
 986                 return ERROR_COMMAND_SYNTAX_ERROR;
 987         if (CMD_ARGC == 1) {
 988                 unsigned delay;
 989                 COMMAND_PARSE_NUMBER(uint, CMD_ARGV[0], delay);
 990
 991                 jtag_set_ntrst_delay(delay);
 992         }
 993         command_print(CMD_CTX, "jtag_ntrst_delay: %u", jtag_get_ntrst_delay());
 994         return ERROR_OK;
 995 }
 996
 997 COMMAND_HANDLER(handle_jtag_ntrst_assert_width_command)
 998 {
 999         if (CMD_ARGC > 1)
1000                 return ERROR_COMMAND_SYNTAX_ERROR;
1001         if (CMD_ARGC == 1) {
1002                 unsigned delay;
1003                 COMMAND_PARSE_NUMBER(uint, CMD_ARGV[0], delay);
1004
1005                 jtag_set_ntrst_assert_width(delay);
1006         }
1007         command_print(CMD_CTX, "jtag_ntrst_assert_width: %u", jtag_get_ntrst_assert_width());
1008         return ERROR_OK;
1009 }
1010
1011 COMMAND_HANDLER(handle_jtag_rclk_command)
1012 {
1013         if (CMD_ARGC > 1)
1014                 return ERROR_COMMAND_SYNTAX_ERROR;
1015
1016         int retval = ERROR_OK;
1017         if (CMD_ARGC == 1) {
1018                 unsigned khz = 0;
1019                 COMMAND_PARSE_NUMBER(uint, CMD_ARGV[0], khz);
1020
1021                 retval = jtag_config_rclk(khz);
1022                 if (ERROR_OK != retval)
1023                         return retval;
1024         }
1025
1026         int cur_khz = jtag_get_speed_khz();
1027         retval = jtag_get_speed_readable(&cur_khz);
1028         if (ERROR_OK != retval)
1029                 return retval;
1030
1031         if (cur_khz)
1032                 command_print(CMD_CTX, "RCLK not supported - fallback to %d kHz", cur_khz);
1033         else
1034                 command_print(CMD_CTX, "RCLK - adaptive");
1035
1036         return retval;
1037 }
1038
1039 COMMAND_HANDLER(handle_jtag_reset_command)
1040 {
1041         if (CMD_ARGC != 2)
1042                 return ERROR_COMMAND_SYNTAX_ERROR;
1043
1044         int trst = -1;
1045         if (CMD_ARGV[0][0] == '1')
1046                 trst = 1;
1047         else if (CMD_ARGV[0][0] == '0')
1048                 trst = 0;
1049         else
1050                 return ERROR_COMMAND_SYNTAX_ERROR;
1051
1052         int srst = -1;
1053         if (CMD_ARGV[1][0] == '1')
1054                 srst = 1;
1055         else if (CMD_ARGV[1][0] == '0')
1056                 srst = 0;
1057         else
1058                 return ERROR_COMMAND_SYNTAX_ERROR;
1059
1060         if (adapter_init(CMD_CTX) != ERROR_OK)
1061                 return ERROR_JTAG_INIT_FAILED;
1062
1063         jtag_add_reset(trst, srst);
1064         return jtag_execute_queue();
1065 }
1066
1067 COMMAND_HANDLER(handle_runtest_command)
1068 {
1069         if (CMD_ARGC != 1)
1070                 return ERROR_COMMAND_SYNTAX_ERROR;
1071
1072         unsigned num_clocks;
1073         COMMAND_PARSE_NUMBER(uint, CMD_ARGV[0], num_clocks);
1074
1075         jtag_add_runtest(num_clocks, TAP_IDLE);
1076         return jtag_execute_queue();
1077 }
1078
1079 /*
1080  * For "irscan" or "drscan" commands, the "end" (really, "next") state
1081  * should be stable ... and *NOT* a shift state, otherwise free-running
1082  * jtag clocks could change the values latched by the update state.
1083  * Not surprisingly, this is the same constraint as SVF; the "irscan"
1084  * and "drscan" commands are a write-only subset of what SVF provides.
1085  */
1086
1087 COMMAND_HANDLER(handle_irscan_command)
1088 {
1089         int i;
1090         struct scan_field *fields;
1091         struct jtag_tap *tap = NULL;
1092         tap_state_t endstate;
1093
1094         if ((CMD_ARGC < 2) || (CMD_ARGC % 2))
1095                 return ERROR_COMMAND_SYNTAX_ERROR;
1096
1097         /* optional "-endstate" "statename" at the end of the arguments,
1098          * so that e.g. IRPAUSE can let us load the data register before
1099          * entering RUN/IDLE to execute the instruction we load here.
1100          */
1101         endstate = TAP_IDLE;
1102
1103         if (CMD_ARGC >= 4) {
1104                 /* have at least one pair of numbers.
1105                  * is last pair the magic text? */
1106                 if (strcmp("-endstate", CMD_ARGV[CMD_ARGC - 2]) == 0) {
1107                         endstate = tap_state_by_name(CMD_ARGV[CMD_ARGC - 1]);
1108                         if (endstate == TAP_INVALID)
1109                                 return ERROR_COMMAND_SYNTAX_ERROR;
1110                         if (!scan_is_safe(endstate))
1111                                 LOG_WARNING("unstable irscan endstate \"%s\"",
1112                                         CMD_ARGV[CMD_ARGC - 1]);
1113                         CMD_ARGC -= 2;
1114                 }
1115         }
1116
1117         int num_fields = CMD_ARGC / 2;
1118         if (num_fields > 1) {
1119                 /* we really should be looking at plain_ir_scan if we want
1120                  * anything more fancy.
1121                  */
1122                 LOG_ERROR("Specify a single value for tap");
1123                 return ERROR_COMMAND_SYNTAX_ERROR;
1124         }
1125
1126         fields = calloc(num_fields, sizeof(*fields));
1127
1128         int retval;
1129         for (i = 0; i < num_fields; i++) {
1130                 tap = jtag_tap_by_string(CMD_ARGV[i*2]);
1131                 if (tap == NULL) {
1132                         free(fields);
1133                         command_print(CMD_CTX, "Tap: %s unknown", CMD_ARGV[i*2]);
1134
1135                         return ERROR_FAIL;
1136                 }
1137                 int field_size = tap->ir_length;
1138                 fields[i].num_bits = field_size;
1139                 uint8_t *v = malloc(DIV_ROUND_UP(field_size, 8));
1140
1141                 uint64_t value;
1142                 retval = parse_u64(CMD_ARGV[i * 2 + 1], &value);
1143                 if (ERROR_OK != retval)
1144                         goto error_return;
1145                 buf_set_u64(v, 0, field_size, value);
1146                 fields[i].out_value = v;
1147                 fields[i].in_value = NULL;
1148         }
1149
1150         /* did we have an endstate? */
1151         jtag_add_ir_scan(tap, fields, endstate);
1152
1153         retval = jtag_execute_queue();
1154
1155 error_return:
1156         for (i = 0; i < num_fields; i++) {
1157                 if (NULL != fields[i].out_value)
1158                         free((void *)fields[i].out_value);
1159         }
1160
1161         free(fields);
1162
1163         return retval;
1164 }
1165
1166 COMMAND_HANDLER(handle_verify_ircapture_command)
1167 {
1168         if (CMD_ARGC > 1)
1169                 return ERROR_COMMAND_SYNTAX_ERROR;
1170
1171         if (CMD_ARGC == 1) {
1172                 bool enable;
1173                 COMMAND_PARSE_ENABLE(CMD_ARGV[0], enable);
1174                 jtag_set_verify_capture_ir(enable);
1175         }
1176
1177         const char *status = jtag_will_verify_capture_ir() ? "enabled" : "disabled";
1178         command_print(CMD_CTX, "verify Capture-IR is %s", status);
1179
1180         return ERROR_OK;
1181 }
1182
1183 COMMAND_HANDLER(handle_verify_jtag_command)
1184 {
1185         if (CMD_ARGC > 1)
1186                 return ERROR_COMMAND_SYNTAX_ERROR;
1187
1188         if (CMD_ARGC == 1) {
1189                 bool enable;
1190                 COMMAND_PARSE_ENABLE(CMD_ARGV[0], enable);
1191                 jtag_set_verify(enable);
1192         }
1193
1194         const char *status = jtag_will_verify() ? "enabled" : "disabled";
1195         command_print(CMD_CTX, "verify jtag capture is %s", status);
1196
1197         return ERROR_OK;
1198 }
1199
1200 COMMAND_HANDLER(handle_tms_sequence_command)
1201 {
1202         if (CMD_ARGC > 1)
1203                 return ERROR_COMMAND_SYNTAX_ERROR;
1204
1205         if (CMD_ARGC == 1) {
1206                 bool use_new_table;
1207                 if (strcmp(CMD_ARGV[0], "short") == 0)
1208                         use_new_table = true;
1209                 else if (strcmp(CMD_ARGV[0], "long") == 0)
1210                         use_new_table = false;
1211                 else
1212                         return ERROR_COMMAND_SYNTAX_ERROR;
1213
1214                 tap_use_new_tms_table(use_new_table);
1215         }
1216
1217         command_print(CMD_CTX, "tms sequence is  %s",
1218                 tap_uses_new_tms_table() ? "short" : "long");
1219
1220         return ERROR_OK;
1221 }
1222
1223 COMMAND_HANDLER(handle_jtag_flush_queue_sleep)
1224 {
1225         if (CMD_ARGC != 1)
1226                 return ERROR_COMMAND_SYNTAX_ERROR;
1227
1228         int sleep_ms;
1229         COMMAND_PARSE_NUMBER(int, CMD_ARGV[0], sleep_ms);
1230
1231         jtag_set_flush_queue_sleep(sleep_ms);
1232
1233         return ERROR_OK;
1234 }
1235
1236 COMMAND_HANDLER(handle_wait_srst_deassert)
1237 {
1238         if (CMD_ARGC != 1)
1239                 return ERROR_COMMAND_SYNTAX_ERROR;
1240
1241         int timeout_ms;
1242         COMMAND_PARSE_NUMBER(int, CMD_ARGV[0], timeout_ms);
1243         if ((timeout_ms <= 0) || (timeout_ms > 100000)) {
1244                 LOG_ERROR("Timeout must be an integer between 0 and 100000");
1245                 return ERROR_FAIL;
1246         }
1247
1248         LOG_USER("Waiting for srst assert + deassert for at most %dms", timeout_ms);
1249         int asserted_yet;
1250         long long then = timeval_ms();
1251         while (jtag_srst_asserted(&asserted_yet) == ERROR_OK) {
1252                 if ((timeval_ms() - then) > timeout_ms) {
1253                         LOG_ERROR("Timed out");
1254                         return ERROR_FAIL;
1255                 }
1256                 if (asserted_yet)
1257                         break;
1258         }
1259         while (jtag_srst_asserted(&asserted_yet) == ERROR_OK) {
1260                 if ((timeval_ms() - then) > timeout_ms) {
1261                         LOG_ERROR("Timed out");
1262                         return ERROR_FAIL;
1263                 }
1264                 if (!asserted_yet)
1265                         break;
1266         }
1267
1268         return ERROR_OK;
1269 }
1270
1271 static const struct command_registration jtag_command_handlers[] = {
1272
1273         {
1274                 .name = "jtag_flush_queue_sleep",
1275                 .handler = handle_jtag_flush_queue_sleep,
1276                 .mode = COMMAND_ANY,
1277                 .help = "For debug purposes(simulate long delays of interface) "
1278                         "to test performance or change in behavior. Default 0ms.",
1279                 .usage = "[sleep in ms]",
1280         },
1281         {
1282                 .name = "jtag_rclk",
1283                 .handler = handle_jtag_rclk_command,
1284                 .mode = COMMAND_ANY,
1285                 .help = "With an argument, change to to use adaptive clocking "
1286                         "if possible; else to use the fallback speed.  "
1287                         "With or without argument, display current setting.",
1288                 .usage = "[fallback_speed_khz]",
1289         },
1290         {
1291                 .name = "jtag_ntrst_delay",
1292                 .handler = handle_jtag_ntrst_delay_command,
1293                 .mode = COMMAND_ANY,
1294                 .help = "delay after deasserting trst in ms",
1295                 .usage = "[milliseconds]",
1296         },
1297         {
1298                 .name = "jtag_ntrst_assert_width",
1299                 .handler = handle_jtag_ntrst_assert_width_command,
1300                 .mode = COMMAND_ANY,
1301                 .help = "delay after asserting trst in ms",
1302                 .usage = "[milliseconds]",
1303         },
1304         {
1305                 .name = "scan_chain",
1306                 .handler = handle_scan_chain_command,
1307                 .mode = COMMAND_ANY,
1308                 .help = "print current scan chain configuration",
1309                 .usage = ""
1310         },
1311         {
1312                 .name = "jtag_reset",
1313                 .handler = handle_jtag_reset_command,
1314                 .mode = COMMAND_EXEC,
1315                 .help = "Set reset line values.  Value '1' is active, "
1316                         "value '0' is inactive.",
1317                 .usage = "trst_active srst_active",
1318         },
1319         {
1320                 .name = "runtest",
1321                 .handler = handle_runtest_command,
1322                 .mode = COMMAND_EXEC,
1323                 .help = "Move to Run-Test/Idle, and issue TCK for num_cycles.",
1324                 .usage = "num_cycles"
1325         },
1326         {
1327                 .name = "irscan",
1328                 .handler = handle_irscan_command,
1329                 .mode = COMMAND_EXEC,
1330                 .help = "Execute Instruction Register (DR) scan.  The "
1331                         "specified opcodes are put into each TAP's IR, "
1332                         "and other TAPs are put in BYPASS.",
1333                 .usage = "[tap_name instruction]* ['-endstate' state_name]",
1334         },
1335         {
1336                 .name = "verify_ircapture",
1337                 .handler = handle_verify_ircapture_command,
1338                 .mode = COMMAND_ANY,
1339                 .help = "Display or assign flag controlling whether to "
1340                         "verify values captured during Capture-IR.",
1341                 .usage = "['enable'|'disable']",
1342         },
1343         {
1344                 .name = "verify_jtag",
1345                 .handler = handle_verify_jtag_command,
1346                 .mode = COMMAND_ANY,
1347                 .help = "Display or assign flag controlling whether to "
1348                         "verify values captured during IR and DR scans.",
1349                 .usage = "['enable'|'disable']",
1350         },
1351         {
1352                 .name = "tms_sequence",
1353                 .handler = handle_tms_sequence_command,
1354                 .mode = COMMAND_ANY,
1355                 .help = "Display or change what style TMS sequences to use "
1356                         "for JTAG state transitions:  short (default) or "
1357                         "long.  Only for working around JTAG bugs.",
1358                 /* Specifically for working around DRIVER bugs... */
1359                 .usage = "['short'|'long']",
1360         },
1361         {
1362                 .name = "wait_srst_deassert",
1363                 .handler = handle_wait_srst_deassert,
1364                 .mode = COMMAND_ANY,
1365                 .help = "Wait for an SRST deassert. "
1366                         "Useful for cases where you need something to happen within ms "
1367                         "of an srst deassert. Timeout in ms ",
1368                 .usage = "ms",
1369         },
1370         {
1371                 .name = "jtag",
1372                 .mode = COMMAND_ANY,
1373                 .help = "perform jtag tap actions",
1374                 .usage = "",
1375
1376                 .chain = jtag_subcommand_handlers,
1377         },
1378         {
1379                 .chain = jtag_command_handlers_to_move,
1380         },
1381         COMMAND_REGISTRATION_DONE
1382 };
1383
1384 int jtag_register_commands(struct command_context *cmd_ctx)
1385 {
1386         return register_commands(cmd_ctx, NULL, jtag_command_handlers);
1387 }