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   1 /***************************************************************************
   2  *   Copyright (C) 2005 by Dominic Rath                                    *
   3  *   Dominic.Rath@gmx.de                                                   *
   4  *                                                                         *
   5  *   This program is free software; you can redistribute it and/or modify  *
   6  *   it under the terms of the GNU General Public License as published by  *
   7  *   the Free Software Foundation; either version 2 of the License, or     *
   8  *   (at your option) any later version.                                   *
   9  *                                                                         *
  10  *   This program is distributed in the hope that it will be useful,       *
  11  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  12  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  13  *   GNU General Public License for more details.                          *
  14  *                                                                         *
  15  *   You should have received a copy of the GNU General Public License     *
  16  *   along with this program; if not, write to the                         *
  17  *   Free Software Foundation, Inc.,                                       *
  18  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
  19  ***************************************************************************/
  20 #ifdef HAVE_CONFIG_H
  21 #include "config.h"
  22 #endif
  23
  24 #include "replacements.h"
  25
  26 #include "jtag.h"
  27
  28 #include "command.h"
  29 #include "log.h"
  30 #include "interpreter.h"
  31
  32 #include "stdlib.h"
  33 #include "string.h"
  34 #include <unistd.h>
  35
  36 #ifndef INTERFACE
  37 /* this allows JTAG devices to implement the entire jtag_xxx() layer in hw/sw */
  38 #define INTERFACE(a) a
  39 #endif
  40
  41
  42 /* note that this is not marked as static as it must be available from outside jtag.c for those
  43    that implement the jtag_xxx() minidriver layer
  44 */
  45 int jtag_error=ERROR_OK;
  46
  47
  48 char* tap_state_strings[16] =
  49 {
  50         "tlr",
  51         "sds", "cd", "sd", "e1d", "pd", "e2d", "ud",
  52         "rti",
  53         "sis", "ci", "si", "e1i", "pi", "e2i", "ui"
  54 };
  55
  56 typedef struct cmd_queue_page_s
  57 {
  58         void *address;
  59         size_t used;
  60         struct cmd_queue_page_s *next;
  61 } cmd_queue_page_t;
  62
  63 #define CMD_QUEUE_PAGE_SIZE (1024 * 1024)
  64 static cmd_queue_page_t *cmd_queue_pages = NULL;
  65
  66 /* tap_move[i][j]: tap movement command to go from state i to state j
  67  * 0: Test-Logic-Reset
  68  * 1: Run-Test/Idle
  69  * 2: Shift-DR
  70  * 3: Pause-DR
  71  * 4: Shift-IR
  72  * 5: Pause-IR
  73  *
  74  * SD->SD and SI->SI have to be caught in interface specific code
  75  */
  76 u8 tap_move[6][6] =
  77 {
  78 /*        TLR   RTI   SD    PD    SI    PI             */
  79         {0x7f, 0x00, 0x17, 0x0a, 0x1b, 0x16},   /* TLR */
  80         {0x7f, 0x00, 0x25, 0x05, 0x2b, 0x0b},   /* RTI */
  81         {0x7f, 0x31, 0x00, 0x01, 0x0f, 0x2f},   /* SD  */
  82         {0x7f, 0x30, 0x20, 0x17, 0x1e, 0x2f},   /* PD  */
  83         {0x7f, 0x31, 0x07, 0x17, 0x00, 0x01},   /* SI  */
  84         {0x7f, 0x30, 0x1c, 0x17, 0x20, 0x2f}    /* PI  */
  85 };
  86
  87 int tap_move_map[16] = {
  88         0, -1, -1,  2, -1,  3, -1, -1,
  89         1, -1, -1,  4, -1,  5, -1, -1
  90 };
  91
  92 tap_transition_t tap_transitions[16] =
  93 {
  94         {TAP_TLR, TAP_RTI},             /* TLR */
  95         {TAP_SIS, TAP_CD},              /* SDS */
  96         {TAP_E1D, TAP_SD},              /* CD  */
  97         {TAP_E1D, TAP_SD},              /* SD  */
  98         {TAP_UD,  TAP_PD},              /* E1D */
  99         {TAP_E2D, TAP_PD},              /* PD  */
 100         {TAP_UD,  TAP_SD},              /* E2D */
 101         {TAP_SDS, TAP_RTI},             /* UD  */
 102         {TAP_SDS, TAP_RTI},             /* RTI */
 103         {TAP_TLR, TAP_CI},              /* SIS */
 104         {TAP_E1I, TAP_SI},              /* CI  */
 105         {TAP_E1I, TAP_SI},              /* SI  */
 106         {TAP_UI,  TAP_PI},              /* E1I */
 107         {TAP_E2I, TAP_PI},              /* PI  */
 108         {TAP_UI,  TAP_SI},              /* E2I */
 109         {TAP_SDS, TAP_RTI}              /* UI  */
 110 };
 111
 112 char* jtag_event_strings[] =
 113 {
 114         "SRST asserted",
 115         "TRST asserted",
 116         "SRST released",
 117         "TRST released"
 118 };
 119
 120 enum tap_state end_state = TAP_TLR;
 121 enum tap_state cur_state = TAP_TLR;
 122 int jtag_trst = 0;
 123 int jtag_srst = 0;
 124
 125 jtag_command_t *jtag_command_queue = NULL;
 126 jtag_command_t **last_comand_pointer = &jtag_command_queue;
 127 jtag_device_t *jtag_devices = NULL;
 128 int jtag_num_devices = 0;
 129 int jtag_ir_scan_size = 0;
 130 enum reset_types jtag_reset_config = RESET_NONE;
 131 enum tap_state cmd_queue_end_state = TAP_TLR;
 132 enum tap_state cmd_queue_cur_state = TAP_TLR;
 133
 134 int jtag_verify_capture_ir = 1;
 135
 136 /* how long the OpenOCD should wait before attempting JTAG communication after reset lines deasserted (in ms) */
 137 int jtag_nsrst_delay = 0; /* default to no nSRST delay */
 138 int jtag_ntrst_delay = 0; /* default to no nTRST delay */
 139
 140 /* maximum number of JTAG devices expected in the chain
 141  */
 142 #define JTAG_MAX_CHAIN_SIZE 20
 143
 144 /* callbacks to inform high-level handlers about JTAG state changes */
 145 jtag_event_callback_t *jtag_event_callbacks;
 146
 147 /* jtag interfaces (parport, FTDI-USB, TI-USB, ...)
 148  */
 149 #if BUILD_PARPORT == 1
 150         extern jtag_interface_t parport_interface;
 151 #endif
 152
 153 #if BUILD_FT2232_FTD2XX == 1
 154         extern jtag_interface_t ft2232_interface;
 155 #endif
 156
 157 #if BUILD_FT2232_LIBFTDI == 1
 158         extern jtag_interface_t ft2232_interface;
 159 #endif
 160
 161 #if BUILD_AMTJTAGACCEL == 1
 162         extern jtag_interface_t amt_jtagaccel_interface;
 163 #endif
 164
 165 #if BUILD_EP93XX == 1
 166         extern jtag_interface_t ep93xx_interface;
 167 #endif
 168
 169 #if BUILD_AT91RM9200 == 1
 170         extern jtag_interface_t at91rm9200_interface;
 171 #endif
 172
 173 #if BUILD_GW16012 == 1
 174         extern jtag_interface_t gw16012_interface;
 175 #endif
 176
 177 #if BUILD_PRESTO_LIBFTDI == 1 || BUILD_PRESTO_FTD2XX == 1
 178         extern jtag_interface_t presto_interface;
 179 #endif
 180
 181 #if BUILD_USBPROG == 1
 182         extern jtag_interface_t usbprog_interface;
 183 #endif
 184
 185 jtag_interface_t *jtag_interfaces[] = {
 186 #if BUILD_PARPORT == 1
 187         &parport_interface,
 188 #endif
 189 #if BUILD_FT2232_FTD2XX == 1
 190         &ft2232_interface,
 191 #endif
 192 #if BUILD_FT2232_LIBFTDI == 1
 193         &ft2232_interface,
 194 #endif
 195 #if BUILD_AMTJTAGACCEL == 1
 196         &amt_jtagaccel_interface,
 197 #endif
 198 #if BUILD_EP93XX == 1
 199         &ep93xx_interface,
 200 #endif
 201 #if BUILD_AT91RM9200 == 1
 202         &at91rm9200_interface,
 203 #endif
 204 #if BUILD_GW16012 == 1
 205         &gw16012_interface,
 206 #endif
 207 #if BUILD_PRESTO_LIBFTDI == 1 || BUILD_PRESTO_FTD2XX == 1
 208         &presto_interface,
 209 #endif
 210 #if BUILD_USBPROG == 1
 211         &usbprog_interface,
 212 #endif
 213         NULL,
 214 };
 215
 216 jtag_interface_t *jtag = NULL;
 217
 218 /* configuration */
 219 jtag_interface_t *jtag_interface = NULL;
 220 int jtag_speed = 0;
 221
 222
 223 /* forward declarations */
 224 int jtag_add_statemove(enum tap_state endstate);
 225 int jtag_add_pathmove(int num_states, enum tap_state *path);
 226 int jtag_add_runtest(int num_cycles, enum tap_state endstate);
 227 int jtag_add_reset(int trst, int srst);
 228 int jtag_add_end_state(enum tap_state endstate);
 229 int jtag_add_sleep(u32 us);
 230 int jtag_execute_queue(void);
 231 int jtag_cancel_queue(void);
 232
 233 /* jtag commands */
 234 int handle_interface_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 235 int handle_jtag_speed_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 236 int handle_jtag_device_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 237 int handle_reset_config_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 238 int handle_jtag_nsrst_delay_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 239 int handle_jtag_ntrst_delay_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 240
 241 int handle_scan_chain_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 242
 243 int handle_endstate_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 244 int handle_jtag_reset_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 245 int handle_runtest_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 246 int handle_statemove_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 247 int handle_irscan_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 248 int handle_drscan_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 249
 250 int handle_verify_ircapture_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 251
 252 int jtag_register_event_callback(int (*callback)(enum jtag_event event, void *priv), void *priv)
 253 {
 254         jtag_event_callback_t **callbacks_p = &jtag_event_callbacks;
 255
 256         if (callback == NULL)
 257         {
 258                 return ERROR_INVALID_ARGUMENTS;
 259         }
 260
 261         if (*callbacks_p)
 262         {
 263                 while ((*callbacks_p)->next)
 264                         callbacks_p = &((*callbacks_p)->next);
 265                 callbacks_p = &((*callbacks_p)->next);
 266         }
 267
 268         (*callbacks_p) = malloc(sizeof(jtag_event_callback_t));
 269         (*callbacks_p)->callback = callback;
 270         (*callbacks_p)->priv = priv;
 271         (*callbacks_p)->next = NULL;
 272
 273         return ERROR_OK;
 274 }
 275
 276 int jtag_unregister_event_callback(int (*callback)(enum jtag_event event, void *priv))
 277 {
 278         jtag_event_callback_t **callbacks_p = &jtag_event_callbacks;
 279
 280         if (callback == NULL)
 281         {
 282                 return ERROR_INVALID_ARGUMENTS;
 283         }
 284
 285         while (*callbacks_p)
 286         {
 287                 jtag_event_callback_t **next = &((*callbacks_p)->next);
 288                 if ((*callbacks_p)->callback == callback)
 289                 {
 290                         free(*callbacks_p);
 291                         *callbacks_p = *next;
 292                 }
 293                 callbacks_p = next;
 294         }
 295
 296         return ERROR_OK;
 297 }
 298
 299 int jtag_call_event_callbacks(enum jtag_event event)
 300 {
 301         jtag_event_callback_t *callback = jtag_event_callbacks;
 302
 303         DEBUG("jtag event: %s", jtag_event_strings[event]);
 304
 305         while (callback)
 306         {
 307                 callback->callback(event, callback->priv);
 308                 callback = callback->next;
 309         }
 310
 311         return ERROR_OK;
 312 }
 313
 314 /* returns a pointer to the pointer of the last command in queue
 315  * this may be a pointer to the root pointer (jtag_command_queue)
 316  * or to the next member of the last but one command
 317  */
 318 jtag_command_t** jtag_get_last_command_p(void)
 319 {
 320 /*      jtag_command_t *cmd = jtag_command_queue;
 321
 322         if (cmd)
 323                 while (cmd->next)
 324                         cmd = cmd->next;
 325         else
 326                 return &jtag_command_queue;
 327
 328         return &cmd->next;*/
 329
 330         return last_comand_pointer;
 331 }
 332
 333 /* returns a pointer to the n-th device in the scan chain */
 334 jtag_device_t* jtag_get_device(int num)
 335 {
 336         jtag_device_t *device = jtag_devices;
 337         int i = 0;
 338
 339         while (device)
 340         {
 341                 if (num == i)
 342                         return device;
 343                 device = device->next;
 344                 i++;
 345         }
 346
 347         ERROR("jtag device number %d not defined", num);
 348         exit(-1);
 349 }
 350
 351 void* cmd_queue_alloc(size_t size)
 352 {
 353         cmd_queue_page_t **p_page = &cmd_queue_pages;
 354         int offset;
 355
 356         if (*p_page)
 357         {
 358                 while ((*p_page)->next)
 359                         p_page = &((*p_page)->next);
 360                 if (CMD_QUEUE_PAGE_SIZE - (*p_page)->used < size)
 361                         p_page = &((*p_page)->next);
 362         }
 363
 364         if (!*p_page)
 365         {
 366                 *p_page = malloc(sizeof(cmd_queue_page_t));
 367                 (*p_page)->used = 0;
 368                 (*p_page)->address = malloc(CMD_QUEUE_PAGE_SIZE);
 369                 (*p_page)->next = NULL;
 370         }
 371
 372         offset = (*p_page)->used;
 373         (*p_page)->used += size;
 374
 375         u8 *t=(u8 *)((*p_page)->address);
 376         return t + offset;
 377 }
 378
 379 void cmd_queue_free()
 380 {
 381         cmd_queue_page_t *page = cmd_queue_pages;
 382
 383         while (page)
 384         {
 385                 cmd_queue_page_t *last = page;
 386                 free(page->address);
 387                 page = page->next;
 388                 free(last);
 389         }
 390
 391         cmd_queue_pages = NULL;
 392 }
 393
 394 int jtag_add_ir_scan(int num_fields, scan_field_t *fields, enum tap_state state)
 395 {
 396         if (jtag_trst == 1)
 397         {
 398                 WARNING("JTAG command queued, while TRST is low (TAP in reset)");
 399                 jtag_error=ERROR_JTAG_TRST_ASSERTED;
 400                 return ERROR_JTAG_TRST_ASSERTED;
 401         }
 402
 403         if (state != -1)
 404                 cmd_queue_end_state = state;
 405
 406         if (cmd_queue_cur_state == TAP_TLR && cmd_queue_end_state != TAP_TLR)
 407                 jtag_call_event_callbacks(JTAG_TRST_RELEASED);
 408
 409         if (cmd_queue_end_state == TAP_TLR)
 410                 jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
 411
 412         cmd_queue_cur_state = cmd_queue_end_state;
 413
 414         int retval=interface_jtag_add_ir_scan(num_fields, fields, state);
 415         if (retval!=ERROR_OK)
 416                 jtag_error=retval;
 417         return retval;
 418 }
 419
 420 int INTERFACE(interface_jtag_add_ir_scan)(int num_fields, scan_field_t *fields, enum tap_state state)
 421 {
 422         jtag_command_t **last_cmd;
 423         jtag_device_t *device;
 424         int i, j;
 425         int scan_size = 0;
 426
 427
 428         last_cmd = jtag_get_last_command_p();
 429
 430         /* allocate memory for a new list member */
 431         *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
 432         (*last_cmd)->next = NULL;
 433         last_comand_pointer = &((*last_cmd)->next);
 434         (*last_cmd)->type = JTAG_SCAN;
 435
 436         /* allocate memory for ir scan command */
 437         (*last_cmd)->cmd.scan = cmd_queue_alloc(sizeof(scan_command_t));
 438         (*last_cmd)->cmd.scan->ir_scan = 1;
 439         (*last_cmd)->cmd.scan->num_fields = jtag_num_devices;   /* one field per device */
 440         (*last_cmd)->cmd.scan->fields = cmd_queue_alloc(jtag_num_devices * sizeof(scan_field_t));
 441         (*last_cmd)->cmd.scan->end_state = state;
 442
 443         for (i = 0; i < jtag_num_devices; i++)
 444         {
 445                 int found = 0;
 446                 device = jtag_get_device(i);
 447                 scan_size = device->ir_length;
 448                 (*last_cmd)->cmd.scan->fields[i].device = i;
 449                 (*last_cmd)->cmd.scan->fields[i].num_bits = scan_size;
 450                 (*last_cmd)->cmd.scan->fields[i].in_value = NULL;
 451                 (*last_cmd)->cmd.scan->fields[i].in_handler = NULL;     /* disable verification by default */
 452
 453                 /* search the list */
 454                 for (j = 0; j < num_fields; j++)
 455                 {
 456                         if (i == fields[j].device)
 457                         {
 458                                 found = 1;
 459                                 (*last_cmd)->cmd.scan->fields[i].out_value = buf_cpy(fields[j].out_value, cmd_queue_alloc(CEIL(scan_size, 8)), scan_size);
 460                                 (*last_cmd)->cmd.scan->fields[i].out_mask = buf_cpy(fields[j].out_mask, cmd_queue_alloc(CEIL(scan_size, 8)), scan_size);
 461
 462                                 if (jtag_verify_capture_ir)
 463                                 {
 464                                         if (fields[j].in_handler==NULL)
 465                                         {
 466                                                 jtag_set_check_value((*last_cmd)->cmd.scan->fields+i, device->expected, device->expected_mask, NULL);
 467                                         } else
 468                                         {
 469                                                 (*last_cmd)->cmd.scan->fields[i].in_handler = fields[j].in_handler;
 470                                                 (*last_cmd)->cmd.scan->fields[i].in_handler_priv = fields[j].in_handler_priv;
 471                                                 (*last_cmd)->cmd.scan->fields[i].in_check_value = device->expected;
 472                                                 (*last_cmd)->cmd.scan->fields[i].in_check_mask = device->expected_mask;
 473                                         }
 474                                 }
 475
 476                                 device->bypass = 0;
 477                                 break;
 478                         }
 479                 }
 480
 481                 if (!found)
 482                 {
 483                         /* if a device isn't listed, set it to BYPASS */
 484                         (*last_cmd)->cmd.scan->fields[i].out_value = buf_set_ones(cmd_queue_alloc(CEIL(scan_size, 8)), scan_size);
 485                         (*last_cmd)->cmd.scan->fields[i].out_mask = NULL;
 486                         device->bypass = 1;
 487
 488                 }
 489
 490                 /* update device information */
 491                 buf_cpy((*last_cmd)->cmd.scan->fields[i].out_value, jtag_get_device(i)->cur_instr, scan_size);
 492         }
 493
 494         return ERROR_OK;
 495 }
 496
 497 int jtag_add_plain_ir_scan(int num_fields, scan_field_t *fields, enum tap_state state)
 498 {
 499         jtag_command_t **last_cmd;
 500         int i;
 501
 502         if (jtag_trst == 1)
 503         {
 504                 WARNING("JTAG command queued, while TRST is low (TAP in reset)");
 505                 return ERROR_JTAG_TRST_ASSERTED;
 506         }
 507
 508         last_cmd = jtag_get_last_command_p();
 509
 510         /* allocate memory for a new list member */
 511         *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
 512         (*last_cmd)->next = NULL;
 513         last_comand_pointer = &((*last_cmd)->next);
 514         (*last_cmd)->type = JTAG_SCAN;
 515
 516         /* allocate memory for ir scan command */
 517         (*last_cmd)->cmd.scan = cmd_queue_alloc(sizeof(scan_command_t));
 518         (*last_cmd)->cmd.scan->ir_scan = 1;
 519         (*last_cmd)->cmd.scan->num_fields = num_fields;
 520         (*last_cmd)->cmd.scan->fields = cmd_queue_alloc(num_fields * sizeof(scan_field_t));
 521         (*last_cmd)->cmd.scan->end_state = state;
 522
 523         if (state != -1)
 524                 cmd_queue_end_state = state;
 525
 526         if (cmd_queue_cur_state == TAP_TLR && cmd_queue_end_state != TAP_TLR)
 527                 jtag_call_event_callbacks(JTAG_TRST_RELEASED);
 528
 529         if (cmd_queue_end_state == TAP_TLR)
 530                 jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
 531
 532         cmd_queue_cur_state = cmd_queue_end_state;
 533
 534         for (i = 0; i < num_fields; i++)
 535         {
 536                 int num_bits = fields[i].num_bits;
 537                 int num_bytes = CEIL(fields[i].num_bits, 8);
 538                 (*last_cmd)->cmd.scan->fields[i].device = fields[i].device;
 539                 (*last_cmd)->cmd.scan->fields[i].num_bits = num_bits;
 540                 (*last_cmd)->cmd.scan->fields[i].out_value = buf_cpy(fields[i].out_value, cmd_queue_alloc(num_bytes), num_bits);
 541                 (*last_cmd)->cmd.scan->fields[i].out_mask = buf_cpy(fields[i].out_mask, cmd_queue_alloc(num_bytes), num_bits);
 542                 (*last_cmd)->cmd.scan->fields[i].in_value = fields[i].in_value;
 543                 (*last_cmd)->cmd.scan->fields[i].in_check_value = fields[i].in_check_value;
 544                 (*last_cmd)->cmd.scan->fields[i].in_check_mask = fields[i].in_check_mask;
 545                 (*last_cmd)->cmd.scan->fields[i].in_handler = NULL;
 546                 (*last_cmd)->cmd.scan->fields[i].in_handler_priv = NULL;
 547         }
 548         return ERROR_OK;
 549 }
 550
 551 int jtag_add_dr_scan(int num_fields, scan_field_t *fields, enum tap_state state)
 552 {
 553         int i, j;
 554         int bypass_devices = 0;
 555         int field_count = 0;
 556         jtag_command_t **last_cmd = jtag_get_last_command_p();
 557         jtag_device_t *device = jtag_devices;
 558         int scan_size;
 559
 560         if (jtag_trst == 1)
 561         {
 562                 WARNING("JTAG command queued, while TRST is low (TAP in reset)");
 563                 return ERROR_JTAG_TRST_ASSERTED;
 564         }
 565
 566         /* count devices in bypass */
 567         while (device)
 568         {
 569                 if (device->bypass)
 570                         bypass_devices++;
 571                 device = device->next;
 572         }
 573
 574         /* allocate memory for a new list member */
 575         *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
 576         last_comand_pointer = &((*last_cmd)->next);
 577         (*last_cmd)->next = NULL;
 578         (*last_cmd)->type = JTAG_SCAN;
 579
 580         /* allocate memory for dr scan command */
 581         (*last_cmd)->cmd.scan = cmd_queue_alloc(sizeof(scan_command_t));
 582         (*last_cmd)->cmd.scan->ir_scan = 0;
 583         (*last_cmd)->cmd.scan->num_fields = num_fields + bypass_devices;
 584         (*last_cmd)->cmd.scan->fields = cmd_queue_alloc((num_fields + bypass_devices) * sizeof(scan_field_t));
 585         (*last_cmd)->cmd.scan->end_state = state;
 586
 587         if (state != -1)
 588                 cmd_queue_end_state = state;
 589
 590         if (cmd_queue_cur_state == TAP_TLR && cmd_queue_end_state != TAP_TLR)
 591                 jtag_call_event_callbacks(JTAG_TRST_RELEASED);
 592
 593         if (cmd_queue_end_state == TAP_TLR)
 594                 jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
 595
 596         cmd_queue_cur_state = cmd_queue_end_state;
 597
 598         for (i = 0; i < jtag_num_devices; i++)
 599         {
 600                 int found = 0;
 601                 (*last_cmd)->cmd.scan->fields[field_count].device = i;
 602
 603                 for (j = 0; j < num_fields; j++)
 604                 {
 605                         if (i == fields[j].device)
 606                         {
 607                                 found = 1;
 608                                 scan_size = fields[j].num_bits;
 609                                 (*last_cmd)->cmd.scan->fields[field_count].num_bits = scan_size;
 610                                 (*last_cmd)->cmd.scan->fields[field_count].out_value = buf_cpy(fields[j].out_value, cmd_queue_alloc(CEIL(scan_size, 8)), scan_size);
 611                                 (*last_cmd)->cmd.scan->fields[field_count].out_mask = buf_cpy(fields[j].out_mask, cmd_queue_alloc(CEIL(scan_size, 8)), scan_size);
 612                                 (*last_cmd)->cmd.scan->fields[field_count].in_value = fields[j].in_value;
 613                                 (*last_cmd)->cmd.scan->fields[field_count].in_check_value = fields[j].in_check_value;
 614                                 (*last_cmd)->cmd.scan->fields[field_count].in_check_mask = fields[j].in_check_mask;
 615                                 (*last_cmd)->cmd.scan->fields[field_count].in_handler = fields[j].in_handler;
 616                                 (*last_cmd)->cmd.scan->fields[field_count++].in_handler_priv = fields[j].in_handler_priv;
 617                         }
 618                 }
 619                 if (!found)
 620                 {
 621                         /* if a device isn't listed, the BYPASS register should be selected */
 622                         if (!jtag_get_device(i)->bypass)
 623                         {
 624                                 ERROR("BUG: no scan data for a device not in BYPASS");
 625                                 exit(-1);
 626                         }
 627
 628                         /* program the scan field to 1 bit length, and ignore it's value */
 629                         (*last_cmd)->cmd.scan->fields[field_count].num_bits = 1;
 630                         (*last_cmd)->cmd.scan->fields[field_count].out_value = NULL;
 631                         (*last_cmd)->cmd.scan->fields[field_count].out_mask = NULL;
 632                         (*last_cmd)->cmd.scan->fields[field_count].in_value = NULL;
 633                         (*last_cmd)->cmd.scan->fields[field_count].in_check_value = NULL;
 634                         (*last_cmd)->cmd.scan->fields[field_count].in_check_mask = NULL;
 635                         (*last_cmd)->cmd.scan->fields[field_count].in_handler = NULL;
 636                         (*last_cmd)->cmd.scan->fields[field_count++].in_handler_priv = NULL;
 637                 }
 638                 else
 639                 {
 640                         /* if a device is listed, the BYPASS register must not be selected */
 641                         if (jtag_get_device(i)->bypass)
 642                         {
 643                                 WARNING("scan data for a device in BYPASS");
 644                         }
 645                 }
 646         }
 647         return ERROR_OK;
 648 }
 649
 650
 651 int jtag_add_plain_dr_scan(int num_fields, scan_field_t *fields, enum tap_state state)
 652 {
 653         int i;
 654         jtag_command_t **last_cmd = jtag_get_last_command_p();
 655
 656         if (jtag_trst == 1)
 657         {
 658                 WARNING("JTAG command queued, while TRST is low (TAP in reset)");
 659                 return ERROR_JTAG_TRST_ASSERTED;
 660         }
 661
 662         /* allocate memory for a new list member */
 663         *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
 664         last_comand_pointer = &((*last_cmd)->next);
 665         (*last_cmd)->next = NULL;
 666         (*last_cmd)->type = JTAG_SCAN;
 667
 668         /* allocate memory for scan command */
 669         (*last_cmd)->cmd.scan = cmd_queue_alloc(sizeof(scan_command_t));
 670         (*last_cmd)->cmd.scan->ir_scan = 0;
 671         (*last_cmd)->cmd.scan->num_fields = num_fields;
 672         (*last_cmd)->cmd.scan->fields = cmd_queue_alloc(num_fields * sizeof(scan_field_t));
 673         (*last_cmd)->cmd.scan->end_state = state;
 674
 675         if (state != -1)
 676                 cmd_queue_end_state = state;
 677
 678         if (cmd_queue_cur_state == TAP_TLR && cmd_queue_end_state != TAP_TLR)
 679                 jtag_call_event_callbacks(JTAG_TRST_RELEASED);
 680
 681         if (cmd_queue_end_state == TAP_TLR)
 682                 jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
 683
 684         cmd_queue_cur_state = cmd_queue_end_state;
 685
 686         for (i = 0; i < num_fields; i++)
 687         {
 688                 int num_bits = fields[i].num_bits;
 689                 int num_bytes = CEIL(fields[i].num_bits, 8);
 690                 (*last_cmd)->cmd.scan->fields[i].device = fields[i].device;
 691                 (*last_cmd)->cmd.scan->fields[i].num_bits = num_bits;
 692                 (*last_cmd)->cmd.scan->fields[i].out_value = buf_cpy(fields[i].out_value, cmd_queue_alloc(num_bytes), num_bits);
 693                 (*last_cmd)->cmd.scan->fields[i].out_mask = buf_cpy(fields[i].out_mask, cmd_queue_alloc(num_bytes), num_bits);
 694                 (*last_cmd)->cmd.scan->fields[i].in_value = fields[i].in_value;
 695                 (*last_cmd)->cmd.scan->fields[i].in_check_value = fields[i].in_check_value;
 696                 (*last_cmd)->cmd.scan->fields[i].in_check_mask = fields[i].in_check_mask;
 697                 (*last_cmd)->cmd.scan->fields[i].in_handler = fields[i].in_handler;
 698                 (*last_cmd)->cmd.scan->fields[i].in_handler_priv = fields[i].in_handler_priv;
 699         }
 700
 701         return ERROR_OK;
 702 }
 703 int jtag_add_statemove(enum tap_state state)
 704 {
 705         if (jtag_trst == 1)
 706         {
 707                 WARNING("JTAG command queued, while TRST is low (TAP in reset)");
 708                 return jtag_error=ERROR_JTAG_TRST_ASSERTED;
 709         }
 710
 711         if (state != -1)
 712                 cmd_queue_end_state = state;
 713
 714         if (cmd_queue_cur_state == TAP_TLR && cmd_queue_end_state != TAP_TLR)
 715                 jtag_call_event_callbacks(JTAG_TRST_RELEASED);
 716
 717         if (cmd_queue_end_state == TAP_TLR)
 718                 jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
 719
 720         cmd_queue_cur_state = cmd_queue_end_state;
 721
 722         return interface_jtag_add_statemove(state);
 723 }
 724
 725 int INTERFACE(interface_jtag_add_statemove)(enum tap_state state)
 726 {
 727         jtag_command_t **last_cmd = jtag_get_last_command_p();
 728
 729         /* allocate memory for a new list member */
 730         *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
 731         last_comand_pointer = &((*last_cmd)->next);
 732         (*last_cmd)->next = NULL;
 733         (*last_cmd)->type = JTAG_STATEMOVE;
 734
 735         (*last_cmd)->cmd.statemove = cmd_queue_alloc(sizeof(statemove_command_t));
 736         (*last_cmd)->cmd.statemove->end_state = state;
 737
 738
 739         return ERROR_OK;
 740 }
 741
 742 int jtag_add_pathmove(int num_states, enum tap_state *path)
 743 {
 744         jtag_command_t **last_cmd = jtag_get_last_command_p();
 745         int i;
 746
 747         if (jtag_trst == 1)
 748         {
 749                 WARNING("JTAG command queued, while TRST is low (TAP in reset)");
 750                 return ERROR_JTAG_TRST_ASSERTED;
 751         }
 752
 753         /* the last state has to be a stable state */
 754         if (tap_move_map[path[num_states - 1]] == -1)
 755         {
 756                 ERROR("TAP path doesn't finish in a stable state");
 757                 return ERROR_JTAG_NOT_IMPLEMENTED;
 758         }
 759
 760         /* allocate memory for a new list member */
 761         *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
 762         last_comand_pointer = &((*last_cmd)->next);
 763         (*last_cmd)->next = NULL;
 764         (*last_cmd)->type = JTAG_PATHMOVE;
 765
 766         (*last_cmd)->cmd.pathmove = cmd_queue_alloc(sizeof(pathmove_command_t));
 767         (*last_cmd)->cmd.pathmove->num_states = num_states;
 768         (*last_cmd)->cmd.pathmove->path = cmd_queue_alloc(sizeof(enum tap_state) * num_states);
 769
 770         for (i = 0; i < num_states; i++)
 771                 (*last_cmd)->cmd.pathmove->path[i] = path[i];
 772
 773         if (cmd_queue_cur_state == TAP_TLR && cmd_queue_end_state != TAP_TLR)
 774                 jtag_call_event_callbacks(JTAG_TRST_RELEASED);
 775
 776         if (cmd_queue_end_state == TAP_TLR)
 777                 jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
 778
 779         cmd_queue_cur_state = path[num_states - 1];
 780
 781         return ERROR_OK;
 782 }
 783
 784 int INTERFACE(interface_jtag_add_runtest)(int num_cycles, enum tap_state state)
 785 {
 786         jtag_command_t **last_cmd = jtag_get_last_command_p();
 787
 788         /* allocate memory for a new list member */
 789         *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
 790         (*last_cmd)->next = NULL;
 791         last_comand_pointer = &((*last_cmd)->next);
 792         (*last_cmd)->type = JTAG_RUNTEST;
 793
 794         (*last_cmd)->cmd.runtest = cmd_queue_alloc(sizeof(runtest_command_t));
 795         (*last_cmd)->cmd.runtest->num_cycles = num_cycles;
 796         (*last_cmd)->cmd.runtest->end_state = state;
 797
 798         return ERROR_OK;
 799 }
 800
 801 int jtag_add_runtest(int num_cycles, enum tap_state state)
 802 {
 803         if (jtag_trst == 1)
 804         {
 805                 jtag_error=ERROR_JTAG_QUEUE_FAILED;
 806                 WARNING("JTAG command queued, while TRST is low (TAP in reset)");
 807                 return ERROR_JTAG_TRST_ASSERTED;
 808         }
 809
 810         if (state != -1)
 811                 cmd_queue_end_state = state;
 812
 813         if (cmd_queue_cur_state == TAP_TLR && cmd_queue_end_state != TAP_TLR)
 814                 jtag_call_event_callbacks(JTAG_TRST_RELEASED);
 815
 816         if (cmd_queue_end_state == TAP_TLR)
 817                 jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
 818
 819         cmd_queue_cur_state = cmd_queue_end_state;
 820
 821         /* executed by sw or hw fifo */
 822         return interface_jtag_add_runtest(num_cycles, state);
 823 }
 824
 825 int jtag_add_reset(int req_trst, int req_srst)
 826 {
 827         int trst_with_tms = 0;
 828         int retval;
 829
 830         if (req_trst == -1)
 831                 req_trst = jtag_trst;
 832
 833         if (req_srst == -1)
 834                 req_srst = jtag_srst;
 835
 836         /* Make sure that jtag_reset_config allows the requested reset */
 837         /* if SRST pulls TRST, we can't fulfill srst == 1 with trst == 0 */
 838         if (((jtag_reset_config & RESET_SRST_PULLS_TRST) && (req_srst == 1)) && (req_trst == 0))
 839         {
 840                 return jtag_error=ERROR_JTAG_RESET_WOULD_ASSERT_TRST;
 841         }
 842
 843         /* if TRST pulls SRST, we reset with TAP T-L-R */
 844         if (((jtag_reset_config & RESET_TRST_PULLS_SRST) && (req_trst == 1)) && (req_srst == 0))
 845         {
 846                 req_trst = 0;
 847                 trst_with_tms = 1;
 848         }
 849
 850         if (req_srst && !(jtag_reset_config & RESET_HAS_SRST))
 851         {
 852                 ERROR("requested nSRST assertion, but the current configuration doesn't support this");
 853                 return jtag_error=ERROR_JTAG_RESET_CANT_SRST;
 854         }
 855
 856         if (req_trst && !(jtag_reset_config & RESET_HAS_TRST))
 857         {
 858                 req_trst = 0;
 859                 trst_with_tms = 1;
 860         }
 861
 862         jtag_trst = req_trst;
 863         jtag_srst = req_srst;
 864
 865         if (jtag_srst)
 866         {
 867                 jtag_call_event_callbacks(JTAG_SRST_ASSERTED);
 868         }
 869         else
 870         {
 871                 jtag_call_event_callbacks(JTAG_SRST_RELEASED);
 872                 if (jtag_nsrst_delay)
 873                         jtag_add_sleep(jtag_nsrst_delay * 1000);
 874         }
 875
 876         if (trst_with_tms)
 877         {
 878                 jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
 879                 cmd_queue_cur_state = TAP_TLR;
 880                 cmd_queue_end_state = TAP_TLR;
 881
 882                 return ERROR_OK;
 883         }
 884         else
 885         {
 886                 if (jtag_trst)
 887                 {
 888                         /* we just asserted nTRST, so we're now in Test-Logic-Reset,
 889                          * and inform possible listeners about this
 890                          */
 891                         cmd_queue_cur_state = TAP_TLR;
 892                         jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
 893                 }
 894                 else
 895                 {
 896                         /* the nTRST line got deasserted, so we're still in Test-Logic-Reset,
 897                          * but we might want to add a delay to give the TAP time to settle
 898                          */
 899                         if (jtag_ntrst_delay)
 900                                 jtag_add_sleep(jtag_ntrst_delay * 1000);
 901                 }
 902         }
 903         retval = interface_jtag_add_reset(req_trst, req_srst);
 904         if (retval!=ERROR_OK)
 905                 jtag_error=retval;
 906
 907         if (trst_with_tms)
 908         {
 909                 jtag_add_statemove(TAP_TLR);
 910         }
 911
 912         return retval;
 913
 914 }
 915
 916 int INTERFACE(interface_jtag_add_reset)(int req_trst, int req_srst)
 917 {
 918         jtag_command_t **last_cmd = jtag_get_last_command_p();
 919
 920         /* allocate memory for a new list member */
 921         *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
 922         (*last_cmd)->next = NULL;
 923         last_comand_pointer = &((*last_cmd)->next);
 924         (*last_cmd)->type = JTAG_RESET;
 925
 926         (*last_cmd)->cmd.reset = cmd_queue_alloc(sizeof(reset_command_t));
 927         (*last_cmd)->cmd.reset->trst = req_trst;
 928         (*last_cmd)->cmd.reset->srst = req_srst;
 929
 930
 931         return ERROR_OK;
 932 }
 933
 934 int jtag_add_end_state(enum tap_state state)
 935 {
 936         jtag_command_t **last_cmd = jtag_get_last_command_p();
 937
 938         /* allocate memory for a new list member */
 939         *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
 940         (*last_cmd)->next = NULL;
 941         last_comand_pointer = &((*last_cmd)->next);
 942         (*last_cmd)->type = JTAG_END_STATE;
 943
 944         (*last_cmd)->cmd.end_state = cmd_queue_alloc(sizeof(end_state_command_t));
 945         (*last_cmd)->cmd.end_state->end_state = state;
 946
 947         if (state != -1)
 948                 cmd_queue_end_state = state;
 949
 950         return ERROR_OK;
 951 }
 952
 953 int jtag_add_sleep(u32 us)
 954 {
 955         jtag_command_t **last_cmd = jtag_get_last_command_p();
 956
 957         /* allocate memory for a new list member */
 958         *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
 959         (*last_cmd)->next = NULL;
 960         last_comand_pointer = &((*last_cmd)->next);
 961         (*last_cmd)->type = JTAG_SLEEP;
 962
 963         (*last_cmd)->cmd.sleep = cmd_queue_alloc(sizeof(sleep_command_t));
 964         (*last_cmd)->cmd.sleep->us = us;
 965
 966         return ERROR_OK;
 967 }
 968
 969 int jtag_scan_size(scan_command_t *cmd)
 970 {
 971         int bit_count = 0;
 972         int i;
 973
 974         /* count bits in scan command */
 975         for (i = 0; i < cmd->num_fields; i++)
 976         {
 977                 bit_count += cmd->fields[i].num_bits;
 978         }
 979
 980         return bit_count;
 981 }
 982
 983 int jtag_build_buffer(scan_command_t *cmd, u8 **buffer)
 984 {
 985         int bit_count = 0;
 986         int i;
 987
 988         bit_count = jtag_scan_size(cmd);
 989         *buffer = malloc(CEIL(bit_count, 8));
 990
 991         bit_count = 0;
 992
 993         for (i = 0; i < cmd->num_fields; i++)
 994         {
 995                 if (cmd->fields[i].out_value)
 996                 {
 997 #ifdef _DEBUG_JTAG_IO_
 998                         char* char_buf = buf_to_str(cmd->fields[i].out_value, (cmd->fields[i].num_bits > 64) ? 64 : cmd->fields[i].num_bits, 16);
 999 #endif
1000                         buf_set_buf(cmd->fields[i].out_value, 0, *buffer, bit_count, cmd->fields[i].num_bits);
1001 #ifdef _DEBUG_JTAG_IO_
1002                         DEBUG("fields[%i].out_value: 0x%s", i, char_buf);
1003                         free(char_buf);
1004 #endif
1005                 }
1006
1007                 bit_count += cmd->fields[i].num_bits;
1008         }
1009
1010         return bit_count;
1011
1012 }
1013
1014 int jtag_read_buffer(u8 *buffer, scan_command_t *cmd)
1015 {
1016         int i;
1017         int bit_count = 0;
1018         int retval;
1019
1020         /* we return ERROR_OK, unless a check fails, or a handler reports a problem */
1021         retval = ERROR_OK;
1022
1023         for (i = 0; i < cmd->num_fields; i++)
1024         {
1025                 /* if neither in_value nor in_handler
1026                  * are specified we don't have to examine this field
1027                  */
1028                 if (cmd->fields[i].in_value || cmd->fields[i].in_handler)
1029                 {
1030                         int num_bits = cmd->fields[i].num_bits;
1031                         u8 *captured = buf_set_buf(buffer, bit_count, malloc(CEIL(num_bits, 8)), 0, num_bits);
1032
1033 #ifdef _DEBUG_JTAG_IO_
1034                         char *char_buf;
1035
1036                         char_buf = buf_to_str(captured, (num_bits > 64) ? 64 : num_bits, 16);
1037                         DEBUG("fields[%i].in_value: 0x%s", i, char_buf);
1038                         free(char_buf);
1039 #endif
1040
1041                         if (cmd->fields[i].in_value)
1042                         {
1043                                 buf_cpy(captured, cmd->fields[i].in_value, num_bits);
1044
1045                                 if (cmd->fields[i].in_handler)
1046                                 {
1047                                         if (cmd->fields[i].in_handler(cmd->fields[i].in_value, cmd->fields[i].in_handler_priv, cmd->fields+i) != ERROR_OK)
1048                                         {
1049                                                 WARNING("in_handler reported a failed check");
1050                                                 retval = ERROR_JTAG_QUEUE_FAILED;
1051                                         }
1052                                 }
1053                         }
1054
1055                         /* no in_value specified, but a handler takes care of the scanned data */
1056                         if (cmd->fields[i].in_handler && (!cmd->fields[i].in_value))
1057                         {
1058                                 if (cmd->fields[i].in_handler(captured, cmd->fields[i].in_handler_priv, cmd->fields+i) != ERROR_OK)
1059                                 {
1060                                         /* We're going to call the error:handler later, but if the in_handler
1061                                          * reported an error we report this failure upstream
1062                                          */
1063                                         WARNING("in_handler reported a failed check");
1064                                         retval = ERROR_JTAG_QUEUE_FAILED;
1065                                 }
1066                         }
1067
1068                         free(captured);
1069                 }
1070                 bit_count += cmd->fields[i].num_bits;
1071         }
1072
1073         return retval;
1074 }
1075
1076 int jtag_check_value(u8 *captured, void *priv, scan_field_t *field)
1077 {
1078         int retval = ERROR_OK;
1079         int num_bits = field->num_bits;
1080
1081         int compare_failed = 0;
1082
1083         if (field->in_check_mask)
1084                 compare_failed = buf_cmp_mask(captured, field->in_check_value, field->in_check_mask, num_bits);
1085         else
1086                 compare_failed = buf_cmp(captured, field->in_check_value, num_bits);
1087
1088         if (compare_failed)
1089                 {
1090                 /* An error handler could have caught the failing check
1091                  * only report a problem when there wasn't a handler, or if the handler
1092                  * acknowledged the error
1093                  */
1094                 if (compare_failed)
1095                 {
1096                         char *captured_char = buf_to_str(captured, (num_bits > 64) ? 64 : num_bits, 16);
1097                         char *in_check_value_char = buf_to_str(field->in_check_value, (num_bits > 64) ? 64 : num_bits, 16);
1098
1099                         if (field->in_check_mask)
1100                         {
1101                                 char *in_check_mask_char;
1102                                 in_check_mask_char = buf_to_str(field->in_check_mask, (num_bits > 64) ? 64 : num_bits, 16);
1103                                 WARNING("value captured during scan didn't pass the requested check: captured: 0x%s check_value: 0x%s check_mask: 0x%s", captured_char, in_check_value_char, in_check_mask_char);
1104                                 free(in_check_mask_char);
1105                         }
1106                         else
1107                         {
1108                                 WARNING("value captured during scan didn't pass the requested check: captured: 0x%s check_value: 0x%s", captured_char, in_check_value_char);
1109                         }
1110
1111                         free(captured_char);
1112                         free(in_check_value_char);
1113
1114                         retval = ERROR_JTAG_QUEUE_FAILED;
1115                 }
1116
1117         }
1118         return retval;
1119 }
1120
1121 /*
1122   set up checking of this field using the in_handler. The values passed in must be valid until
1123   after jtag_execute() has completed.
1124  */
1125 void jtag_set_check_value(scan_field_t *field, u8 *value, u8 *mask, error_handler_t *in_error_handler)
1126 {
1127         if (value)
1128                 field->in_handler = jtag_check_value;
1129         else
1130                 field->in_handler = NULL;       /* No check, e.g. embeddedice uses value==NULL to indicate no check */
1131         field->in_handler_priv = NULL;  /* this will be filled in at the invocation site to point to the field duplicate */
1132         field->in_check_value = value;
1133         field->in_check_mask = mask;
1134 }
1135
1136 enum scan_type jtag_scan_type(scan_command_t *cmd)
1137 {
1138         int i;
1139         int type = 0;
1140
1141         for (i = 0; i < cmd->num_fields; i++)
1142         {
1143                 if (cmd->fields[i].in_value || cmd->fields[i].in_handler)
1144                         type |= SCAN_IN;
1145                 if (cmd->fields[i].out_value)
1146                         type |= SCAN_OUT;
1147         }
1148
1149         return type;
1150 }
1151
1152 int INTERFACE(interface_jtag_execute_queue)(void)
1153 {
1154         int retval;
1155
1156         retval = jtag->execute_queue();
1157
1158         cmd_queue_free();
1159
1160         jtag_command_queue = NULL;
1161         last_comand_pointer = &jtag_command_queue;
1162
1163         jtag_error=ERROR_OK;
1164
1165         return retval;
1166 }
1167
1168 int jtag_execute_queue(void)
1169 {
1170         int retval=interface_jtag_execute_queue();
1171         if (retval!=ERROR_OK)
1172                 return retval;
1173         retval=jtag_error;
1174         jtag_error=ERROR_OK;
1175         return retval;
1176 }
1177
1178 int jtag_reset_callback(enum jtag_event event, void *priv)
1179 {
1180         jtag_device_t *device = priv;
1181
1182         DEBUG("-");
1183
1184         if (event == JTAG_TRST_ASSERTED)
1185         {
1186                 buf_set_ones(device->cur_instr, device->ir_length);
1187                 device->bypass = 1;
1188         }
1189
1190         return ERROR_OK;
1191 }
1192
1193 void jtag_sleep(u32 us)
1194 {
1195         usleep(us);
1196 }
1197
1198 /* Try to examine chain layout according to IEEE 1149.1 §12
1199  */
1200 int jtag_examine_chain()
1201 {
1202         jtag_device_t *device = jtag_devices;
1203         scan_field_t field;
1204         u8 idcode_buffer[JTAG_MAX_CHAIN_SIZE * 4];
1205         int i;
1206         int bit_count;
1207         int device_count = 0;
1208         u8 zero_check = 0x0;
1209         u8 one_check = 0xff;
1210
1211         field.device = 0;
1212         field.num_bits = sizeof(idcode_buffer) * 8;
1213         field.out_value = idcode_buffer;
1214         field.out_mask = NULL;
1215         field.in_value = idcode_buffer;
1216         field.in_check_value = NULL;
1217         field.in_check_mask = NULL;
1218         field.in_handler = NULL;
1219         field.in_handler_priv = NULL;
1220
1221         for (i = 0; i < JTAG_MAX_CHAIN_SIZE; i++)
1222         {
1223                 buf_set_u32(idcode_buffer, i * 32, 32, 0x000000FF);
1224         }
1225
1226         jtag_add_plain_dr_scan(1, &field, TAP_TLR);
1227         jtag_execute_queue();
1228
1229         for (i = 0; i < JTAG_MAX_CHAIN_SIZE * 4; i++)
1230         {
1231                 zero_check |= idcode_buffer[i];
1232                 one_check &= idcode_buffer[i];
1233         }
1234
1235         /* if there wasn't a single non-zero bit or if all bits were one, the scan isn't valid */
1236         if ((zero_check == 0x00) || (one_check == 0xff))
1237         {
1238                 ERROR("JTAG communication failure, check connection, JTAG interface, target power etc.");
1239                 return ERROR_JTAG_INIT_FAILED;
1240         }
1241
1242         for (bit_count = 0; bit_count < (JTAG_MAX_CHAIN_SIZE * 32) - 31;)
1243         {
1244                 u32 idcode = buf_get_u32(idcode_buffer, bit_count, 32);
1245                 if ((idcode & 1) == 0)
1246                 {
1247                         /* LSB must not be 0, this indicates a device in bypass */
1248                         device_count++;
1249
1250                         bit_count += 1;
1251                 }
1252                 else
1253                 {
1254                         u32 manufacturer;
1255                         u32 part;
1256                         u32 version;
1257
1258                         if (idcode == 0x000000FF)
1259                         {
1260                                 /* End of chain (invalid manufacturer ID) */
1261                                 break;
1262                         }
1263
1264                         if (device)
1265                         {
1266                                 device->idcode = idcode;
1267                                 device = device->next;
1268                         }
1269                         device_count++;
1270
1271                         manufacturer = (idcode & 0xffe) >> 1;
1272                         part = (idcode & 0xffff000) >> 12;
1273                         version = (idcode & 0xf0000000) >> 28;
1274
1275                         INFO("JTAG device found: 0x%8.8x (Manufacturer: 0x%3.3x, Part: 0x%4.4x, Version: 0x%1.1x)",
1276                                 idcode, manufacturer, part, version);
1277
1278                         bit_count += 32;
1279                 }
1280         }
1281
1282         /* see if number of discovered devices matches configuration */
1283         if (device_count != jtag_num_devices)
1284         {
1285                 ERROR("number of discovered devices in JTAG chain (%i) doesn't match configuration (%i)",
1286                         device_count, jtag_num_devices);
1287                 ERROR("check the config file and ensure proper JTAG communication (connections, speed, ...)");
1288                 return ERROR_JTAG_INIT_FAILED;
1289         }
1290
1291         return ERROR_OK;
1292 }
1293
1294 int jtag_validate_chain()
1295 {
1296         jtag_device_t *device = jtag_devices;
1297         int total_ir_length = 0;
1298         u8 *ir_test = NULL;
1299         scan_field_t field;
1300         int chain_pos = 0;
1301
1302         while (device)
1303         {
1304                 total_ir_length += device->ir_length;
1305                 device = device->next;
1306         }
1307
1308         total_ir_length += 2;
1309         ir_test = malloc(CEIL(total_ir_length, 8));
1310         buf_set_ones(ir_test, total_ir_length);
1311
1312         field.device = 0;
1313         field.num_bits = total_ir_length;
1314         field.out_value = ir_test;
1315         field.out_mask = NULL;
1316         field.in_value = ir_test;
1317         field.in_check_value = NULL;
1318         field.in_check_mask = NULL;
1319         field.in_handler = NULL;
1320         field.in_handler_priv = NULL;
1321
1322         jtag_add_plain_ir_scan(1, &field, TAP_TLR);
1323         jtag_execute_queue();
1324
1325         device = jtag_devices;
1326         while (device)
1327         {
1328                 if (buf_get_u32(ir_test, chain_pos, 2) != 0x1)
1329                 {
1330                         char *cbuf = buf_to_str(ir_test, total_ir_length, 16);
1331                         ERROR("Error validating JTAG scan chain, IR mismatch, scan returned 0x%s", cbuf);
1332                         free(cbuf);
1333                         free(ir_test);
1334                         return ERROR_JTAG_INIT_FAILED;
1335                 }
1336                 chain_pos += device->ir_length;
1337                 device = device->next;
1338         }
1339
1340         if (buf_get_u32(ir_test, chain_pos, 2) != 0x3)
1341         {
1342                 char *cbuf = buf_to_str(ir_test, total_ir_length, 16);
1343                 ERROR("Error validating JTAG scan chain, IR mismatch, scan returned 0x%s", cbuf);
1344                 free(cbuf);
1345                 free(ir_test);
1346                 return ERROR_JTAG_INIT_FAILED;
1347         }
1348
1349         free(ir_test);
1350
1351         return ERROR_OK;
1352 }
1353
1354 int jtag_register_commands(struct command_context_s *cmd_ctx)
1355 {
1356         register_command(cmd_ctx, NULL, "interface", handle_interface_command,
1357                 COMMAND_CONFIG, NULL);
1358         register_command(cmd_ctx, NULL, "jtag_speed", handle_jtag_speed_command,
1359                 COMMAND_ANY, "set jtag speed (if supported) <speed>");
1360         register_command(cmd_ctx, NULL, "jtag_device", handle_jtag_device_command,
1361                 COMMAND_CONFIG, "jtag_device <ir_length> <ir_expected> <ir_mask>");
1362         register_command(cmd_ctx, NULL, "reset_config", handle_reset_config_command,
1363                 COMMAND_CONFIG, NULL);
1364         register_command(cmd_ctx, NULL, "jtag_nsrst_delay", handle_jtag_nsrst_delay_command,
1365                 COMMAND_CONFIG, NULL);
1366         register_command(cmd_ctx, NULL, "jtag_ntrst_delay", handle_jtag_ntrst_delay_command,
1367                 COMMAND_CONFIG, NULL);
1368
1369         register_command(cmd_ctx, NULL, "scan_chain", handle_scan_chain_command,
1370                 COMMAND_EXEC, "print current scan chain configuration");
1371
1372         register_command(cmd_ctx, NULL, "endstate", handle_endstate_command,
1373                 COMMAND_EXEC, "finish JTAG operations in <tap_state>");
1374         register_command(cmd_ctx, NULL, "jtag_reset", handle_jtag_reset_command,
1375                 COMMAND_EXEC, "toggle reset lines <trst> <srst>");
1376         register_command(cmd_ctx, NULL, "runtest", handle_runtest_command,
1377                 COMMAND_EXEC, "move to Run-Test/Idle, and execute <num_cycles>");
1378         register_command(cmd_ctx, NULL, "statemove", handle_statemove_command,
1379                 COMMAND_EXEC, "move to current endstate or [tap_state]");
1380         register_command(cmd_ctx, NULL, "irscan", handle_irscan_command,
1381                 COMMAND_EXEC, "execute IR scan <device> <instr> [dev2] [instr2] ...");
1382         register_command(cmd_ctx, NULL, "drscan", handle_drscan_command,
1383                 COMMAND_EXEC, "execute DR scan <device> <var> [dev2] [var2] ...");
1384
1385         register_command(cmd_ctx, NULL, "verify_ircapture", handle_verify_ircapture_command,
1386                 COMMAND_ANY, "verify value captured during Capture-IR <enable|disable>");
1387         return ERROR_OK;
1388 }
1389
1390 int jtag_interface_init(struct command_context_s *cmd_ctx)
1391 {
1392         if (!jtag_interface)
1393         {
1394                 /* nothing was previously specified by "interface" command */
1395                 ERROR("JTAG interface has to be specified, see \"interface\" command");
1396                 return ERROR_JTAG_INVALID_INTERFACE;
1397         }
1398
1399         if (jtag_interface->init() != ERROR_OK)
1400                 return ERROR_JTAG_INIT_FAILED;
1401
1402         jtag = jtag_interface;
1403         return ERROR_OK;
1404 }
1405
1406 int jtag_init(struct command_context_s *cmd_ctx)
1407 {
1408         int validate_tries = 0;
1409         jtag_device_t *device;
1410
1411         DEBUG("-");
1412
1413         if (!jtag && jtag_interface_init(cmd_ctx) != ERROR_OK)
1414                 return ERROR_JTAG_INIT_FAILED;
1415
1416         device = jtag_devices;
1417         jtag_ir_scan_size = 0;
1418         jtag_num_devices = 0;
1419         while (device != NULL)
1420         {
1421                 jtag_ir_scan_size += device->ir_length;
1422                 jtag_num_devices++;
1423                 device = device->next;
1424         }
1425
1426         jtag_add_statemove(TAP_TLR);
1427         jtag_execute_queue();
1428
1429         /* examine chain first, as this could discover the real chain layout */
1430         if (jtag_examine_chain() != ERROR_OK)
1431         {
1432                 ERROR("trying to validate configured JTAG chain anyway...");
1433         }
1434
1435         while (jtag_validate_chain() != ERROR_OK)
1436         {
1437                 validate_tries++;
1438                 if (validate_tries > 5)
1439                 {
1440                         ERROR("Could not validate JTAG chain, exit");
1441                         jtag = NULL;
1442                         return ERROR_JTAG_INVALID_INTERFACE;
1443                 }
1444                 usleep(10000);
1445         }
1446
1447         return ERROR_OK;
1448 }
1449
1450 int handle_interface_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1451 {
1452         int i;
1453
1454         /* check whether the interface is already configured */
1455         if (jtag_interface)
1456         {
1457                 WARNING("Interface already configured, ignoring");
1458                 return ERROR_OK;
1459         }
1460
1461         /* interface name is a mandatory argument */
1462         if (argc < 1 || args[0][0] == '\0')
1463         {
1464                 return ERROR_COMMAND_SYNTAX_ERROR;
1465         }
1466
1467         for (i=0; jtag_interfaces[i]; i++)
1468         {
1469                 if (strcmp(args[0], jtag_interfaces[i]->name) == 0)
1470                 {
1471                         if (jtag_interfaces[i]->register_commands(cmd_ctx) != ERROR_OK)
1472                                 exit(-1);
1473
1474                         jtag_interface = jtag_interfaces[i];
1475                         return ERROR_OK;
1476                 }
1477         }
1478
1479         /* no valid interface was found (i.e. the configuration option,
1480          * didn't match one of the compiled-in interfaces
1481          */
1482         ERROR("No valid jtag interface found (%s)", args[0]);
1483         ERROR("compiled-in jtag interfaces:");
1484         for (i = 0; jtag_interfaces[i]; i++)
1485         {
1486                 ERROR("%i: %s", i, jtag_interfaces[i]->name);
1487         }
1488
1489         return ERROR_JTAG_INVALID_INTERFACE;
1490 }
1491
1492 int handle_jtag_device_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1493 {
1494         jtag_device_t **last_device_p = &jtag_devices;
1495
1496         if (*last_device_p)
1497         {
1498                 while ((*last_device_p)->next)
1499                         last_device_p = &((*last_device_p)->next);
1500                 last_device_p = &((*last_device_p)->next);
1501         }
1502
1503         if (argc < 3)
1504                 return ERROR_OK;
1505
1506         *last_device_p = malloc(sizeof(jtag_device_t));
1507         (*last_device_p)->ir_length = strtoul(args[0], NULL, 0);
1508
1509         (*last_device_p)->expected = malloc((*last_device_p)->ir_length);
1510         buf_set_u32((*last_device_p)->expected, 0, (*last_device_p)->ir_length, strtoul(args[1], NULL, 0));
1511         (*last_device_p)->expected_mask = malloc((*last_device_p)->ir_length);
1512         buf_set_u32((*last_device_p)->expected_mask, 0, (*last_device_p)->ir_length, strtoul(args[2], NULL, 0));
1513
1514         (*last_device_p)->cur_instr = malloc((*last_device_p)->ir_length);
1515         (*last_device_p)->bypass = 1;
1516         buf_set_ones((*last_device_p)->cur_instr, (*last_device_p)->ir_length);
1517
1518         (*last_device_p)->next = NULL;
1519
1520         jtag_register_event_callback(jtag_reset_callback, (*last_device_p));
1521
1522         jtag_num_devices++;
1523
1524         return ERROR_OK;
1525 }
1526
1527 int handle_scan_chain_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1528 {
1529         jtag_device_t *device = jtag_devices;
1530         int device_count = 0;
1531
1532         while (device)
1533         {
1534                 u32 expected, expected_mask, cur_instr;
1535                 expected = buf_get_u32(device->expected, 0, device->ir_length);
1536                 expected_mask = buf_get_u32(device->expected_mask, 0, device->ir_length);
1537                 cur_instr = buf_get_u32(device->cur_instr, 0, device->ir_length);
1538                 command_print(cmd_ctx, "%i: idcode: 0x%8.8x ir length %i, ir capture 0x%x, ir mask 0x%x, current instruction 0x%x", device_count, device->idcode, device->ir_length, expected, expected_mask, cur_instr);
1539                 device = device->next;
1540                 device_count++;
1541         }
1542
1543         return ERROR_OK;
1544 }
1545
1546 int handle_reset_config_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1547 {
1548         if (argc >= 1)
1549         {
1550                 if (strcmp(args[0], "none") == 0)
1551                         jtag_reset_config = RESET_NONE;
1552                 else if (strcmp(args[0], "trst_only") == 0)
1553                         jtag_reset_config = RESET_HAS_TRST;
1554                 else if (strcmp(args[0], "srst_only") == 0)
1555                         jtag_reset_config = RESET_HAS_SRST;
1556                 else if (strcmp(args[0], "trst_and_srst") == 0)
1557                         jtag_reset_config = RESET_TRST_AND_SRST;
1558                 else
1559                 {
1560                         ERROR("invalid reset_config argument, defaulting to none");
1561                         jtag_reset_config = RESET_NONE;
1562                         return ERROR_INVALID_ARGUMENTS;
1563                 }
1564         }
1565
1566         if (argc >= 2)
1567         {
1568                 if (strcmp(args[1], "srst_pulls_trst") == 0)
1569                         jtag_reset_config |= RESET_SRST_PULLS_TRST;
1570                 else if (strcmp(args[1], "trst_pulls_srst") == 0)
1571                         jtag_reset_config |= RESET_TRST_PULLS_SRST;
1572                 else if (strcmp(args[1], "combined") == 0)
1573                         jtag_reset_config |= RESET_SRST_PULLS_TRST | RESET_TRST_PULLS_SRST;
1574                 else if (strcmp(args[1], "separate") == 0)
1575                         jtag_reset_config &= ~(RESET_SRST_PULLS_TRST | RESET_TRST_PULLS_SRST);
1576                 else
1577                 {
1578                         ERROR("invalid reset_config argument, defaulting to none");
1579                         jtag_reset_config = RESET_NONE;
1580                         return ERROR_INVALID_ARGUMENTS;
1581                 }
1582         }
1583
1584         if (argc >= 3)
1585         {
1586                 if (strcmp(args[2], "trst_open_drain") == 0)
1587                         jtag_reset_config |= RESET_TRST_OPEN_DRAIN;
1588                 else if (strcmp(args[2], "trst_push_pull") == 0)
1589                         jtag_reset_config &= ~RESET_TRST_OPEN_DRAIN;
1590                 else
1591                 {
1592                         ERROR("invalid reset_config argument, defaulting to none");
1593                         jtag_reset_config = RESET_NONE;
1594                         return ERROR_INVALID_ARGUMENTS;
1595                 }
1596         }
1597
1598         if (argc >= 4)
1599         {
1600                 if (strcmp(args[3], "srst_push_pull") == 0)
1601                         jtag_reset_config |= RESET_SRST_PUSH_PULL;
1602                 else if (strcmp(args[3], "srst_open_drain") == 0)
1603                         jtag_reset_config &= ~RESET_SRST_PUSH_PULL;
1604                 else
1605                 {
1606                         ERROR("invalid reset_config argument, defaulting to none");
1607                         jtag_reset_config = RESET_NONE;
1608                         return ERROR_INVALID_ARGUMENTS;
1609                 }
1610         }
1611
1612         return ERROR_OK;
1613 }
1614
1615 int handle_jtag_nsrst_delay_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1616 {
1617         if (argc < 1)
1618         {
1619                 ERROR("jtag_nsrst_delay <ms> command takes one required argument");
1620                 exit(-1);
1621         }
1622         else
1623         {
1624                 jtag_nsrst_delay = strtoul(args[0], NULL, 0);
1625         }
1626
1627         return ERROR_OK;
1628 }
1629
1630 int handle_jtag_ntrst_delay_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1631 {
1632         if (argc < 1)
1633         {
1634                 ERROR("jtag_ntrst_delay <ms> command takes one required argument");
1635                 exit(-1);
1636         }
1637         else
1638         {
1639                 jtag_ntrst_delay = strtoul(args[0], NULL, 0);
1640         }
1641
1642         return ERROR_OK;
1643 }
1644
1645 int handle_jtag_speed_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1646 {
1647         if (argc == 0)
1648                 command_print(cmd_ctx, "jtag_speed: %i", jtag_speed);
1649
1650         if (argc > 0)
1651         {
1652                 /* this command can be called during CONFIG,
1653                  * in which case jtag isn't initialized */
1654                 if (jtag)
1655                         jtag->speed(strtoul(args[0], NULL, 0));
1656                 else
1657                         jtag_speed = strtoul(args[0], NULL, 0);
1658         }
1659
1660         return ERROR_OK;
1661 }
1662
1663 int handle_endstate_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1664 {
1665         enum tap_state state;
1666
1667         if (argc < 1)
1668         {
1669                 return ERROR_COMMAND_SYNTAX_ERROR;
1670         }
1671         else
1672         {
1673                 for (state = 0; state < 16; state++)
1674                 {
1675                         if (strcmp(args[0], tap_state_strings[state]) == 0)
1676                         {
1677                                 jtag_add_end_state(state);
1678                                 jtag_execute_queue();
1679                         }
1680                 }
1681         }
1682         command_print(cmd_ctx, "current endstate: %s", tap_state_strings[end_state]);
1683
1684         return ERROR_OK;
1685 }
1686
1687 int handle_jtag_reset_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1688 {
1689         int trst = -1;
1690         int srst = -1;
1691         int retval;
1692
1693         if (argc < 2)
1694         {
1695                 return ERROR_COMMAND_SYNTAX_ERROR;
1696
1697         }
1698
1699         if (args[0][0] == '1')
1700                 trst = 1;
1701         else if (args[0][0] == '0')
1702                 trst = 0;
1703         else
1704         {
1705                 return ERROR_COMMAND_SYNTAX_ERROR;
1706         }
1707
1708         if (args[1][0] == '1')
1709                 srst = 1;
1710         else if (args[1][0] == '0')
1711                 srst = 0;
1712         else
1713         {
1714                 return ERROR_COMMAND_SYNTAX_ERROR;
1715         }
1716
1717         if (!jtag && jtag_interface_init(cmd_ctx) != ERROR_OK)
1718                 return ERROR_JTAG_INIT_FAILED;
1719
1720         if ((retval = jtag_add_reset(trst, srst)) != ERROR_OK)
1721         {
1722                 switch (retval)
1723                 {
1724                         case ERROR_JTAG_RESET_WOULD_ASSERT_TRST:
1725                                 command_print(cmd_ctx, "requested reset would assert trst\nif this is acceptable, use jtag_reset 1 %c", args[1][0]);
1726                                 break;
1727                         case ERROR_JTAG_RESET_CANT_SRST:
1728                                 command_print(cmd_ctx, "can't assert srst because the current reset_config doesn't support it");
1729                                 break;
1730                         default:
1731                                 command_print(cmd_ctx, "unknown error");
1732                 }
1733         }
1734         jtag_execute_queue();
1735
1736         return ERROR_OK;
1737 }
1738
1739 int handle_runtest_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1740 {
1741         if (argc < 1)
1742         {
1743                 return ERROR_COMMAND_SYNTAX_ERROR;
1744         }
1745
1746         jtag_add_runtest(strtol(args[0], NULL, 0), -1);
1747         jtag_execute_queue();
1748
1749         return ERROR_OK;
1750
1751 }
1752
1753 int handle_statemove_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1754 {
1755         enum tap_state state;
1756
1757         state = -1;
1758         if (argc == 1)
1759         {
1760                 for (state = 0; state < 16; state++)
1761                 {
1762                         if (strcmp(args[0], tap_state_strings[state]) == 0)
1763                         {
1764                                 break;
1765                         }
1766                 }
1767         }
1768
1769         jtag_add_statemove(state);
1770         jtag_execute_queue();
1771
1772         return ERROR_OK;
1773
1774 }
1775
1776 int handle_irscan_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1777 {
1778         int i;
1779         scan_field_t *fields;
1780
1781         if ((argc < 2) || (argc % 2))
1782         {
1783                 return ERROR_COMMAND_SYNTAX_ERROR;
1784         }
1785
1786         fields = malloc(sizeof(scan_field_t) * argc / 2);
1787
1788         for (i = 0; i < argc / 2; i++)
1789         {
1790                 int device = strtoul(args[i*2], NULL, 0);
1791                 int field_size = jtag_get_device(device)->ir_length;
1792                 fields[i].device = device;
1793                 fields[i].out_value = malloc(CEIL(field_size, 8));
1794                 buf_set_u32(fields[i].out_value, 0, field_size, strtoul(args[i*2+1], NULL, 0));
1795                 fields[i].out_mask = NULL;
1796                 fields[i].in_value = NULL;
1797                 fields[i].in_check_mask = NULL;
1798                 fields[i].in_handler = NULL;
1799                 fields[i].in_handler_priv = NULL;
1800         }
1801
1802         jtag_add_ir_scan(argc / 2, fields, -1);
1803         jtag_execute_queue();
1804
1805         for (i = 0; i < argc / 2; i++)
1806                 free(fields[i].out_value);
1807
1808         free (fields);
1809
1810         return ERROR_OK;
1811 }
1812
1813 int handle_drscan_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1814 {
1815         scan_field_t *fields;
1816         int num_fields = 0;
1817         int field_count = 0;
1818         var_t *var;
1819         int i, j;
1820
1821         if ((argc < 2) || (argc % 2))
1822         {
1823                 return ERROR_COMMAND_SYNTAX_ERROR;
1824         }
1825
1826         for (i = 0; i < argc; i+=2)
1827         {
1828                 var = get_var_by_namenum(args[i+1]);
1829                 if (var)
1830                 {
1831                         num_fields += var->num_fields;
1832                 }
1833                 else
1834                 {
1835                         command_print(cmd_ctx, "variable %s doesn't exist", args[i+1]);
1836                         return ERROR_OK;
1837                 }
1838         }
1839
1840         fields = malloc(sizeof(scan_field_t) * num_fields);
1841
1842         for (i = 0; i < argc; i+=2)
1843         {
1844                 var = get_var_by_namenum(args[i+1]);
1845
1846                 for (j = 0; j < var->num_fields; j++)
1847                 {
1848                         fields[field_count].device = strtol(args[i], NULL, 0);
1849                         fields[field_count].num_bits = var->fields[j].num_bits;
1850                         fields[field_count].out_value = malloc(CEIL(var->fields[j].num_bits, 8));
1851                         buf_set_u32(fields[field_count].out_value, 0, var->fields[j].num_bits, var->fields[j].value);
1852                         fields[field_count].out_mask = NULL;
1853                         fields[field_count].in_value = fields[field_count].out_value;
1854                         fields[field_count].in_check_mask = NULL;
1855                         fields[field_count].in_check_value = NULL;
1856                         fields[field_count].in_handler = field_le_to_host;
1857                         fields[field_count++].in_handler_priv = &(var->fields[j]);
1858                 }
1859         }
1860
1861         jtag_add_dr_scan(num_fields, fields, -1);
1862         jtag_execute_queue();
1863
1864         for (i = 0; i < argc / 2; i++)
1865                 free(fields[i].out_value);
1866
1867         free(fields);
1868
1869         return ERROR_OK;
1870 }
1871
1872 int handle_verify_ircapture_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1873 {
1874         if (argc == 1)
1875         {
1876                 if (strcmp(args[0], "enable") == 0)
1877                 {
1878                         jtag_verify_capture_ir = 1;
1879                 }
1880                 else if (strcmp(args[0], "disable") == 0)
1881                 {
1882                         jtag_verify_capture_ir = 0;
1883                 } else
1884                 {
1885                         return ERROR_COMMAND_SYNTAX_ERROR;
1886                 }
1887         } else if (argc != 0)
1888         {
1889                 return ERROR_COMMAND_SYNTAX_ERROR;
1890         }
1891
1892         command_print(cmd_ctx, "verify Capture-IR is %s", (jtag_verify_capture_ir) ? "enabled": "disabled");
1893
1894         return ERROR_OK;
1895 }