src/jtag/adapter.c

   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 "minidriver.h"
  35 #include "interface.h"
  36 #include "interfaces.h"
  37 #include <transport/transport.h>
  38 #include <jtag/drivers/jtag_usb_common.h>
  39
  40 #ifdef HAVE_STRINGS_H
  41 #include <strings.h>
  42 #endif
  43
  44 /**
  45  * @file
  46  * Holds support for configuring debug adapters from TCl scripts.
  47  */
  48
  49 struct adapter_driver *adapter_driver;
  50 const char * const jtag_only[] = { "jtag", NULL };
  51
  52 static int jim_adapter_name(Jim_Interp *interp, int argc, Jim_Obj * const *argv)
  53 {
  54         struct jim_getopt_info goi;
  55         jim_getopt_setup(&goi, interp, argc-1, argv + 1);
  56
  57         /* return the name of the interface */
  58         /* TCL code might need to know the exact type... */
  59         /* FUTURE: we allow this as a means to "set" the interface. */
  60         if (goi.argc != 0) {
  61                 Jim_WrongNumArgs(goi.interp, 1, goi.argv-1, "(no params)");
  62                 return JIM_ERR;
  63         }
  64         const char *name = adapter_driver ? adapter_driver->name : NULL;
  65         Jim_SetResultString(goi.interp, name ? name : "undefined", -1);
  66         return JIM_OK;
  67 }
  68
  69 COMMAND_HANDLER(adapter_transports_command)
  70 {
  71         char **transports;
  72         int retval;
  73
  74         retval = CALL_COMMAND_HANDLER(transport_list_parse, &transports);
  75         if (retval != ERROR_OK)
  76                 return retval;
  77
  78         retval = allow_transports(CMD_CTX, (const char **)transports);
  79
  80         if (retval != ERROR_OK) {
  81                 for (unsigned i = 0; transports[i]; i++)
  82                         free(transports[i]);
  83                 free(transports);
  84         }
  85         return retval;
  86 }
  87
  88 COMMAND_HANDLER(handle_adapter_list_command)
  89 {
  90         if (strcmp(CMD_NAME, "list") == 0 && CMD_ARGC > 0)
  91                 return ERROR_COMMAND_SYNTAX_ERROR;
  92
  93         command_print(CMD, "The following debug adapters are available:");
  94         for (unsigned i = 0; adapter_drivers[i]; i++) {
  95                 const char *name = adapter_drivers[i]->name;
  96                 command_print(CMD, "%u: %s", i + 1, name);
  97         }
  98
  99         return ERROR_OK;
 100 }
 101
 102 COMMAND_HANDLER(handle_adapter_driver_command)
 103 {
 104         int retval;
 105
 106         /* check whether the interface is already configured */
 107         if (adapter_driver) {
 108                 LOG_WARNING("Interface already configured, ignoring");
 109                 return ERROR_OK;
 110         }
 111
 112         /* interface name is a mandatory argument */
 113         if (CMD_ARGC != 1 || CMD_ARGV[0][0] == '\0')
 114                 return ERROR_COMMAND_SYNTAX_ERROR;
 115
 116         for (unsigned i = 0; adapter_drivers[i]; i++) {
 117                 if (strcmp(CMD_ARGV[0], adapter_drivers[i]->name) != 0)
 118                         continue;
 119
 120                 if (adapter_drivers[i]->commands) {
 121                         retval = register_commands(CMD_CTX, NULL,
 122                                         adapter_drivers[i]->commands);
 123                         if (retval != ERROR_OK)
 124                                 return retval;
 125                 }
 126
 127                 adapter_driver = adapter_drivers[i];
 128
 129                 return allow_transports(CMD_CTX, adapter_driver->transports);
 130         }
 131
 132         /* no valid interface was found (i.e. the configuration option,
 133          * didn't match one of the compiled-in interfaces
 134          */
 135         LOG_ERROR("The specified debug interface was not found (%s)",
 136                                 CMD_ARGV[0]);
 137         CALL_COMMAND_HANDLER(handle_adapter_list_command);
 138         return ERROR_JTAG_INVALID_INTERFACE;
 139 }
 140
 141 COMMAND_HANDLER(handle_reset_config_command)
 142 {
 143         int new_cfg = 0;
 144         int mask = 0;
 145
 146         /* Original versions cared about the order of these tokens:
 147          *   reset_config signals [combination [trst_type [srst_type]]]
 148          * They also clobbered the previous configuration even on error.
 149          *
 150          * Here we don't care about the order, and only change values
 151          * which have been explicitly specified.
 152          */
 153         for (; CMD_ARGC; CMD_ARGC--, CMD_ARGV++) {
 154                 int tmp = 0;
 155                 int m;
 156
 157                 /* gating */
 158                 m = RESET_SRST_NO_GATING;
 159                 if (strcmp(*CMD_ARGV, "srst_gates_jtag") == 0)
 160                         /* default: don't use JTAG while SRST asserted */;
 161                 else if (strcmp(*CMD_ARGV, "srst_nogate") == 0)
 162                         tmp = RESET_SRST_NO_GATING;
 163                 else
 164                         m = 0;
 165                 if (mask & m) {
 166                         LOG_ERROR("extra reset_config %s spec (%s)",
 167                                         "gating", *CMD_ARGV);
 168                         return ERROR_COMMAND_SYNTAX_ERROR;
 169                 }
 170                 if (m)
 171                         goto next;
 172
 173                 /* signals */
 174                 m = RESET_HAS_TRST | RESET_HAS_SRST;
 175                 if (strcmp(*CMD_ARGV, "none") == 0)
 176                         tmp = RESET_NONE;
 177                 else if (strcmp(*CMD_ARGV, "trst_only") == 0)
 178                         tmp = RESET_HAS_TRST;
 179                 else if (strcmp(*CMD_ARGV, "srst_only") == 0)
 180                         tmp = RESET_HAS_SRST;
 181                 else if (strcmp(*CMD_ARGV, "trst_and_srst") == 0)
 182                         tmp = RESET_HAS_TRST | RESET_HAS_SRST;
 183                 else
 184                         m = 0;
 185                 if (mask & m) {
 186                         LOG_ERROR("extra reset_config %s spec (%s)",
 187                                         "signal", *CMD_ARGV);
 188                         return ERROR_COMMAND_SYNTAX_ERROR;
 189                 }
 190                 if (m)
 191                         goto next;
 192
 193                 /* combination (options for broken wiring) */
 194                 m = RESET_SRST_PULLS_TRST | RESET_TRST_PULLS_SRST;
 195                 if (strcmp(*CMD_ARGV, "separate") == 0)
 196                         /* separate reset lines - default */;
 197                 else if (strcmp(*CMD_ARGV, "srst_pulls_trst") == 0)
 198                         tmp |= RESET_SRST_PULLS_TRST;
 199                 else if (strcmp(*CMD_ARGV, "trst_pulls_srst") == 0)
 200                         tmp |= RESET_TRST_PULLS_SRST;
 201                 else if (strcmp(*CMD_ARGV, "combined") == 0)
 202                         tmp |= RESET_SRST_PULLS_TRST | RESET_TRST_PULLS_SRST;
 203                 else
 204                         m = 0;
 205                 if (mask & m) {
 206                         LOG_ERROR("extra reset_config %s spec (%s)",
 207                                         "combination", *CMD_ARGV);
 208                         return ERROR_COMMAND_SYNTAX_ERROR;
 209                 }
 210                 if (m)
 211                         goto next;
 212
 213                 /* trst_type (NOP without HAS_TRST) */
 214                 m = RESET_TRST_OPEN_DRAIN;
 215                 if (strcmp(*CMD_ARGV, "trst_open_drain") == 0)
 216                         tmp |= RESET_TRST_OPEN_DRAIN;
 217                 else if (strcmp(*CMD_ARGV, "trst_push_pull") == 0)
 218                         /* push/pull from adapter - default */;
 219                 else
 220                         m = 0;
 221                 if (mask & m) {
 222                         LOG_ERROR("extra reset_config %s spec (%s)",
 223                                         "trst_type", *CMD_ARGV);
 224                         return ERROR_COMMAND_SYNTAX_ERROR;
 225                 }
 226                 if (m)
 227                         goto next;
 228
 229                 /* srst_type (NOP without HAS_SRST) */
 230                 m = RESET_SRST_PUSH_PULL;
 231                 if (strcmp(*CMD_ARGV, "srst_push_pull") == 0)
 232                         tmp |= RESET_SRST_PUSH_PULL;
 233                 else if (strcmp(*CMD_ARGV, "srst_open_drain") == 0)
 234                         /* open drain from adapter - default */;
 235                 else
 236                         m = 0;
 237                 if (mask & m) {
 238                         LOG_ERROR("extra reset_config %s spec (%s)",
 239                                         "srst_type", *CMD_ARGV);
 240                         return ERROR_COMMAND_SYNTAX_ERROR;
 241                 }
 242                 if (m)
 243                         goto next;
 244
 245                 /* connect_type - only valid when srst_nogate */
 246                 m = RESET_CNCT_UNDER_SRST;
 247                 if (strcmp(*CMD_ARGV, "connect_assert_srst") == 0)
 248                         tmp |= RESET_CNCT_UNDER_SRST;
 249                 else if (strcmp(*CMD_ARGV, "connect_deassert_srst") == 0)
 250                         /* connect normally - default */;
 251                 else
 252                         m = 0;
 253                 if (mask & m) {
 254                         LOG_ERROR("extra reset_config %s spec (%s)",
 255                                         "connect_type", *CMD_ARGV);
 256                         return ERROR_COMMAND_SYNTAX_ERROR;
 257                 }
 258                 if (m)
 259                         goto next;
 260
 261                 /* caller provided nonsense; fail */
 262                 LOG_ERROR("unknown reset_config flag (%s)", *CMD_ARGV);
 263                 return ERROR_COMMAND_SYNTAX_ERROR;
 264
 265 next:
 266                 /* Remember the bits which were specified (mask)
 267                  * and their new values (new_cfg).
 268                  */
 269                 mask |= m;
 270                 new_cfg |= tmp;
 271         }
 272
 273         /* clear previous values of those bits, save new values */
 274         if (mask) {
 275                 int old_cfg = jtag_get_reset_config();
 276
 277                 old_cfg &= ~mask;
 278                 new_cfg |= old_cfg;
 279                 jtag_set_reset_config(new_cfg);
 280         } else
 281                 new_cfg = jtag_get_reset_config();
 282
 283         /*
 284          * Display the (now-)current reset mode
 285          */
 286         char *modes[6];
 287
 288         /* minimal JTAG has neither SRST nor TRST (so that's the default) */
 289         switch (new_cfg & (RESET_HAS_TRST | RESET_HAS_SRST)) {
 290                 case RESET_HAS_SRST:
 291                         modes[0] = "srst_only";
 292                         break;
 293                 case RESET_HAS_TRST:
 294                         modes[0] = "trst_only";
 295                         break;
 296                 case RESET_TRST_AND_SRST:
 297                         modes[0] = "trst_and_srst";
 298                         break;
 299                 default:
 300                         modes[0] = "none";
 301                         break;
 302         }
 303
 304         /* normally SRST and TRST are decoupled; but bugs happen ... */
 305         switch (new_cfg & (RESET_SRST_PULLS_TRST | RESET_TRST_PULLS_SRST)) {
 306                 case RESET_SRST_PULLS_TRST:
 307                         modes[1] = "srst_pulls_trst";
 308                         break;
 309                 case RESET_TRST_PULLS_SRST:
 310                         modes[1] = "trst_pulls_srst";
 311                         break;
 312                 case RESET_SRST_PULLS_TRST | RESET_TRST_PULLS_SRST:
 313                         modes[1] = "combined";
 314                         break;
 315                 default:
 316                         modes[1] = "separate";
 317                         break;
 318         }
 319
 320         /* TRST-less connectors include Altera, Xilinx, and minimal JTAG */
 321         if (new_cfg & RESET_HAS_TRST) {
 322                 if (new_cfg & RESET_TRST_OPEN_DRAIN)
 323                         modes[3] = " trst_open_drain";
 324                 else
 325                         modes[3] = " trst_push_pull";
 326         } else
 327                 modes[3] = "";
 328
 329         /* SRST-less connectors include TI-14, Xilinx, and minimal JTAG */
 330         if (new_cfg & RESET_HAS_SRST) {
 331                 if (new_cfg & RESET_SRST_NO_GATING)
 332                         modes[2] = " srst_nogate";
 333                 else
 334                         modes[2] = " srst_gates_jtag";
 335
 336                 if (new_cfg & RESET_SRST_PUSH_PULL)
 337                         modes[4] = " srst_push_pull";
 338                 else
 339                         modes[4] = " srst_open_drain";
 340
 341                 if (new_cfg & RESET_CNCT_UNDER_SRST)
 342                         modes[5] = " connect_assert_srst";
 343                 else
 344                         modes[5] = " connect_deassert_srst";
 345         } else {
 346                 modes[2] = "";
 347                 modes[4] = "";
 348                 modes[5] = "";
 349         }
 350
 351         command_print(CMD, "%s %s%s%s%s%s",
 352                         modes[0], modes[1],
 353                         modes[2], modes[3], modes[4], modes[5]);
 354
 355         return ERROR_OK;
 356 }
 357
 358 COMMAND_HANDLER(handle_adapter_srst_delay_command)
 359 {
 360         if (CMD_ARGC > 1)
 361                 return ERROR_COMMAND_SYNTAX_ERROR;
 362         if (CMD_ARGC == 1) {
 363                 unsigned delay;
 364                 COMMAND_PARSE_NUMBER(uint, CMD_ARGV[0], delay);
 365
 366                 jtag_set_nsrst_delay(delay);
 367         }
 368         command_print(CMD, "adapter srst delay: %u", jtag_get_nsrst_delay());
 369         return ERROR_OK;
 370 }
 371
 372 COMMAND_HANDLER(handle_adapter_srst_pulse_width_command)
 373 {
 374         if (CMD_ARGC > 1)
 375                 return ERROR_COMMAND_SYNTAX_ERROR;
 376         if (CMD_ARGC == 1) {
 377                 unsigned width;
 378                 COMMAND_PARSE_NUMBER(uint, CMD_ARGV[0], width);
 379
 380                 jtag_set_nsrst_assert_width(width);
 381         }
 382         command_print(CMD, "adapter srst pulse_width: %u", jtag_get_nsrst_assert_width());
 383         return ERROR_OK;
 384 }
 385
 386 COMMAND_HANDLER(handle_adapter_speed_command)
 387 {
 388         if (CMD_ARGC > 1)
 389                 return ERROR_COMMAND_SYNTAX_ERROR;
 390
 391         int retval = ERROR_OK;
 392         if (CMD_ARGC == 1) {
 393                 unsigned khz = 0;
 394                 COMMAND_PARSE_NUMBER(uint, CMD_ARGV[0], khz);
 395
 396                 retval = jtag_config_khz(khz);
 397                 if (retval != ERROR_OK)
 398                         return retval;
 399         }
 400
 401         int cur_speed = jtag_get_speed_khz();
 402         retval = jtag_get_speed_readable(&cur_speed);
 403         if (retval != ERROR_OK)
 404                 return retval;
 405
 406         if (cur_speed)
 407                 command_print(CMD, "adapter speed: %d kHz", cur_speed);
 408         else
 409                 command_print(CMD, "adapter speed: RCLK - adaptive");
 410
 411         return retval;
 412 }
 413
 414 COMMAND_HANDLER(handle_adapter_reset_de_assert)
 415 {
 416         enum values {
 417                 VALUE_UNDEFINED = -1,
 418                 VALUE_DEASSERT  = 0,
 419                 VALUE_ASSERT    = 1,
 420         };
 421         enum values value;
 422         enum values srst = VALUE_UNDEFINED;
 423         enum values trst = VALUE_UNDEFINED;
 424         enum reset_types jtag_reset_config = jtag_get_reset_config();
 425         char *signal;
 426
 427         if (CMD_ARGC == 0) {
 428                 if (transport_is_jtag()) {
 429                         if (jtag_reset_config & RESET_HAS_TRST)
 430                                 signal = jtag_get_trst() ? "asserted" : "deasserted";
 431                         else
 432                                 signal = "not present";
 433                         command_print(CMD, "trst %s", signal);
 434                 }
 435
 436                 if (jtag_reset_config & RESET_HAS_SRST)
 437                         signal = jtag_get_srst() ? "asserted" : "deasserted";
 438                 else
 439                         signal = "not present";
 440                 command_print(CMD, "srst %s", signal);
 441
 442                 return ERROR_OK;
 443         }
 444
 445         if (CMD_ARGC != 1 && CMD_ARGC != 3)
 446                 return ERROR_COMMAND_SYNTAX_ERROR;
 447
 448         value = (strcmp(CMD_NAME, "assert") == 0) ? VALUE_ASSERT : VALUE_DEASSERT;
 449         if (strcmp(CMD_ARGV[0], "srst") == 0)
 450                 srst = value;
 451         else if (strcmp(CMD_ARGV[0], "trst") == 0)
 452                 trst = value;
 453         else
 454                 return ERROR_COMMAND_SYNTAX_ERROR;
 455
 456         if (CMD_ARGC == 3) {
 457                 if (strcmp(CMD_ARGV[1], "assert") == 0)
 458                         value = VALUE_ASSERT;
 459                 else if (strcmp(CMD_ARGV[1], "deassert") == 0)
 460                         value = VALUE_DEASSERT;
 461                 else
 462                         return ERROR_COMMAND_SYNTAX_ERROR;
 463
 464                 if (strcmp(CMD_ARGV[2], "srst") == 0 && srst == VALUE_UNDEFINED)
 465                         srst = value;
 466                 else if (strcmp(CMD_ARGV[2], "trst") == 0 && trst == VALUE_UNDEFINED)
 467                         trst = value;
 468                 else
 469                         return ERROR_COMMAND_SYNTAX_ERROR;
 470         }
 471
 472         if (trst == VALUE_UNDEFINED) {
 473                 if (transport_is_jtag())
 474                         trst = jtag_get_trst() ? VALUE_ASSERT : VALUE_DEASSERT;
 475                 else
 476                         trst = VALUE_DEASSERT; /* unused, safe value */
 477         }
 478
 479         if (srst == VALUE_UNDEFINED) {
 480                 if (jtag_reset_config & RESET_HAS_SRST)
 481                         srst = jtag_get_srst() ? VALUE_ASSERT : VALUE_DEASSERT;
 482                 else
 483                         srst = VALUE_DEASSERT; /* unused, safe value */
 484         }
 485
 486         if (trst == VALUE_ASSERT && !transport_is_jtag()) {
 487                 LOG_ERROR("transport has no trst signal");
 488                 return ERROR_FAIL;
 489         }
 490
 491         if (srst == VALUE_ASSERT && !(jtag_reset_config & RESET_HAS_SRST)) {
 492                 LOG_ERROR("adapter has no srst signal");
 493                 return ERROR_FAIL;
 494         }
 495
 496         return adapter_resets((trst == VALUE_DEASSERT) ? TRST_DEASSERT : TRST_ASSERT,
 497                                                   (srst == VALUE_DEASSERT) ? SRST_DEASSERT : SRST_ASSERT);
 498 }
 499
 500 #ifdef HAVE_LIBUSB_GET_PORT_NUMBERS
 501 COMMAND_HANDLER(handle_usb_location_command)
 502 {
 503         if (CMD_ARGC == 1)
 504                 jtag_usb_set_location(CMD_ARGV[0]);
 505
 506         command_print(CMD, "adapter usb location: %s", jtag_usb_get_location());
 507
 508         return ERROR_OK;
 509 }
 510 #endif /* HAVE_LIBUSB_GET_PORT_NUMBERS */
 511
 512 static const struct command_registration adapter_usb_command_handlers[] = {
 513 #ifdef HAVE_LIBUSB_GET_PORT_NUMBERS
 514         {
 515                 .name = "location",
 516                 .handler = &handle_usb_location_command,
 517                 .mode = COMMAND_CONFIG,
 518                 .help = "display or set the USB bus location of the USB device",
 519                 .usage = "[<bus>-port[.port]...]",
 520         },
 521 #endif /* HAVE_LIBUSB_GET_PORT_NUMBERS */
 522         COMMAND_REGISTRATION_DONE
 523 };
 524
 525 static const struct command_registration adapter_srst_command_handlers[] = {
 526         {
 527                 .name = "delay",
 528                 .handler = handle_adapter_srst_delay_command,
 529                 .mode = COMMAND_ANY,
 530                 .help = "delay after deasserting SRST in ms",
 531                 .usage = "[milliseconds]",
 532         },
 533         {
 534                 .name = "pulse_width",
 535                 .handler = handle_adapter_srst_pulse_width_command,
 536                 .mode = COMMAND_ANY,
 537                 .help = "SRST assertion pulse width in ms",
 538                 .usage = "[milliseconds]",
 539         },
 540         COMMAND_REGISTRATION_DONE
 541 };
 542
 543 static const struct command_registration adapter_command_handlers[] = {
 544         {
 545                 .name = "driver",
 546                 .handler = handle_adapter_driver_command,
 547                 .mode = COMMAND_CONFIG,
 548                 .help = "Select a debug adapter driver",
 549                 .usage = "driver_name",
 550         },
 551         {
 552                 .name = "speed",
 553                 .handler = handle_adapter_speed_command,
 554                 .mode = COMMAND_ANY,
 555                 .help = "With an argument, change to the specified maximum "
 556                         "jtag speed.  For JTAG, 0 KHz signifies adaptive "
 557                         "clocking. "
 558                         "With or without argument, display current setting.",
 559                 .usage = "[khz]",
 560         },
 561         {
 562                 .name = "list",
 563                 .handler = handle_adapter_list_command,
 564                 .mode = COMMAND_ANY,
 565                 .help = "List all built-in debug adapter drivers",
 566                 .usage = "",
 567         },
 568         {
 569                 .name = "name",
 570                 .mode = COMMAND_ANY,
 571                 .jim_handler = jim_adapter_name,
 572                 .help = "Returns the name of the currently "
 573                         "selected adapter (driver)",
 574         },
 575         {
 576                 .name = "srst",
 577                 .mode = COMMAND_ANY,
 578                 .help = "srst adapter command group",
 579                 .usage = "",
 580                 .chain = adapter_srst_command_handlers,
 581         },
 582         {
 583                 .name = "transports",
 584                 .handler = adapter_transports_command,
 585                 .mode = COMMAND_CONFIG,
 586                 .help = "Declare transports the adapter supports.",
 587                 .usage = "transport ...",
 588         },
 589         {
 590                 .name = "usb",
 591                 .mode = COMMAND_ANY,
 592                 .help = "usb adapter command group",
 593                 .usage = "",
 594                 .chain = adapter_usb_command_handlers,
 595         },
 596         {
 597                 .name = "assert",
 598                 .handler = handle_adapter_reset_de_assert,
 599                 .mode = COMMAND_EXEC,
 600                 .help = "Controls SRST and TRST lines.",
 601                 .usage = "|deassert [srst|trst [assert|deassert srst|trst]]",
 602         },
 603         {
 604                 .name = "deassert",
 605                 .handler = handle_adapter_reset_de_assert,
 606                 .mode = COMMAND_EXEC,
 607                 .help = "Controls SRST and TRST lines.",
 608                 .usage = "|assert [srst|trst [deassert|assert srst|trst]]",
 609         },
 610         COMMAND_REGISTRATION_DONE
 611 };
 612
 613 static const struct command_registration interface_command_handlers[] = {
 614         {
 615                 .name = "adapter",
 616                 .mode = COMMAND_ANY,
 617                 .help = "adapter command group",
 618                 .usage = "",
 619                 .chain = adapter_command_handlers,
 620         },
 621         {
 622                 .name = "reset_config",
 623                 .handler = handle_reset_config_command,
 624                 .mode = COMMAND_ANY,
 625                 .help = "configure adapter reset behavior",
 626                 .usage = "[none|trst_only|srst_only|trst_and_srst] "
 627                         "[srst_pulls_trst|trst_pulls_srst|combined|separate] "
 628                         "[srst_gates_jtag|srst_nogate] "
 629                         "[trst_push_pull|trst_open_drain] "
 630                         "[srst_push_pull|srst_open_drain] "
 631                         "[connect_deassert_srst|connect_assert_srst]",
 632         },
 633         COMMAND_REGISTRATION_DONE
 634 };
 635
 636 /**
 637  * Register the commands which deal with arbitrary debug adapter drivers.
 638  *
 639  * @todo Remove internal assumptions that all debug adapters use JTAG for
 640  * transport.  Various types and data structures are not named generically.
 641  */
 642 int interface_register_commands(struct command_context *ctx)
 643 {
 644         return register_commands(ctx, NULL, interface_command_handlers);
 645 }