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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
  37 /* note that this is not marked as static as it must be available from outside jtag.c for those
  38    that implement the jtag_xxx() minidriver layer
  39 */
  40 int jtag_error=ERROR_OK;
  41
  42
  43 char* tap_state_strings[16] =
  44 {
  45         "tlr",
  46         "sds", "cd", "sd", "e1d", "pd", "e2d", "ud",
  47         "rti",
  48         "sis", "ci", "si", "e1i", "pi", "e2i", "ui"
  49 };
  50
  51 typedef struct cmd_queue_page_s
  52 {
  53         void *address;
  54         size_t used;
  55         struct cmd_queue_page_s *next;
  56 } cmd_queue_page_t;
  57
  58 #define CMD_QUEUE_PAGE_SIZE (1024 * 1024)
  59 static cmd_queue_page_t *cmd_queue_pages = NULL;
  60
  61 /* tap_move[i][j]: tap movement command to go from state i to state j
  62  * 0: Test-Logic-Reset
  63  * 1: Run-Test/Idle
  64  * 2: Shift-DR
  65  * 3: Pause-DR
  66  * 4: Shift-IR
  67  * 5: Pause-IR
  68  *
  69  * SD->SD and SI->SI have to be caught in interface specific code
  70  */
  71 u8 tap_move[6][6] =
  72 {
  73 /*        TLR   RTI   SD    PD    SI    PI             */
  74         {0x7f, 0x00, 0x17, 0x0a, 0x1b, 0x16},   /* TLR */
  75         {0x7f, 0x00, 0x25, 0x05, 0x2b, 0x0b},   /* RTI */
  76         {0x7f, 0x31, 0x00, 0x01, 0x0f, 0x2f},   /* SD  */
  77         {0x7f, 0x30, 0x20, 0x17, 0x1e, 0x2f},   /* PD  */
  78         {0x7f, 0x31, 0x07, 0x17, 0x00, 0x01},   /* SI  */
  79         {0x7f, 0x30, 0x1c, 0x17, 0x20, 0x2f}    /* PI  */
  80 };
  81
  82 int tap_move_map[16] = {
  83         0, -1, -1,  2, -1,  3, -1, -1,
  84         1, -1, -1,  4, -1,  5, -1, -1
  85 };
  86
  87 tap_transition_t tap_transitions[16] =
  88 {
  89         {TAP_TLR, TAP_RTI},             /* TLR */
  90         {TAP_SIS, TAP_CD},              /* SDS */
  91         {TAP_E1D, TAP_SD},              /* CD  */
  92         {TAP_E1D, TAP_SD},              /* SD  */
  93         {TAP_UD,  TAP_PD},              /* E1D */
  94         {TAP_E2D, TAP_PD},              /* PD  */
  95         {TAP_UD,  TAP_SD},              /* E2D */
  96         {TAP_SDS, TAP_RTI},             /* UD  */
  97         {TAP_SDS, TAP_RTI},             /* RTI */
  98         {TAP_TLR, TAP_CI},              /* SIS */
  99         {TAP_E1I, TAP_SI},              /* CI  */
 100         {TAP_E1I, TAP_SI},              /* SI  */
 101         {TAP_UI,  TAP_PI},              /* E1I */
 102         {TAP_E2I, TAP_PI},              /* PI  */
 103         {TAP_UI,  TAP_SI},              /* E2I */
 104         {TAP_SDS, TAP_RTI}              /* UI  */
 105 };
 106
 107 char* jtag_event_strings[] =
 108 {
 109         "JTAG controller reset(tms or TRST)"
 110 };
 111
 112 enum tap_state end_state = TAP_TLR;
 113 enum tap_state cur_state = TAP_TLR;
 114 int jtag_trst = 0;
 115 int jtag_srst = 0;
 116
 117 jtag_command_t *jtag_command_queue = NULL;
 118 jtag_command_t **last_comand_pointer = &jtag_command_queue;
 119 jtag_device_t *jtag_devices = NULL;
 120 int jtag_num_devices = 0;
 121 int jtag_ir_scan_size = 0;
 122 enum reset_types jtag_reset_config = RESET_NONE;
 123 enum tap_state cmd_queue_end_state = TAP_TLR;
 124 enum tap_state cmd_queue_cur_state = TAP_TLR;
 125
 126 int jtag_verify_capture_ir = 1;
 127
 128 /* how long the OpenOCD should wait before attempting JTAG communication after reset lines deasserted (in ms) */
 129 int jtag_nsrst_delay = 0; /* default to no nSRST delay */
 130 int jtag_ntrst_delay = 0; /* default to no nTRST delay */
 131
 132 /* maximum number of JTAG devices expected in the chain
 133  */
 134 #define JTAG_MAX_CHAIN_SIZE 20
 135
 136 /* callbacks to inform high-level handlers about JTAG state changes */
 137 jtag_event_callback_t *jtag_event_callbacks;
 138
 139 /* jtag interfaces (parport, FTDI-USB, TI-USB, ...)
 140  */
 141
 142 #if BUILD_ECOSBOARD == 1
 143         extern jtag_interface_t eCosBoard_interface;
 144 #endif
 145
 146 #if BUILD_PARPORT == 1
 147         extern jtag_interface_t parport_interface;
 148 #endif
 149
 150 #if BUILD_FT2232_FTD2XX == 1
 151         extern jtag_interface_t ft2232_interface;
 152 #endif
 153
 154 #if BUILD_FT2232_LIBFTDI == 1
 155         extern jtag_interface_t ft2232_interface;
 156 #endif
 157
 158 #if BUILD_AMTJTAGACCEL == 1
 159         extern jtag_interface_t amt_jtagaccel_interface;
 160 #endif
 161
 162 #if BUILD_EP93XX == 1
 163         extern jtag_interface_t ep93xx_interface;
 164 #endif
 165
 166 #if BUILD_AT91RM9200 == 1
 167         extern jtag_interface_t at91rm9200_interface;
 168 #endif
 169
 170 #if BUILD_GW16012 == 1
 171         extern jtag_interface_t gw16012_interface;
 172 #endif
 173
 174 #if BUILD_PRESTO_LIBFTDI == 1 || BUILD_PRESTO_FTD2XX == 1
 175         extern jtag_interface_t presto_interface;
 176 #endif
 177
 178 #if BUILD_USBPROG == 1
 179         extern jtag_interface_t usbprog_interface;
 180 #endif
 181
 182 jtag_interface_t *jtag_interfaces[] = {
 183 #if BUILD_ECOSBOARD == 1
 184         &eCosBoard_interface,
 185 #endif
 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 int jtag_speed_post_reset = 0;
 222
 223
 224 /* forward declarations */
 225 void jtag_add_statemove(enum tap_state endstate);
 226 void jtag_add_pathmove(int num_states, enum tap_state *path);
 227 void jtag_add_runtest(int num_cycles, enum tap_state endstate);
 228 int jtag_add_reset(int trst, int srst);
 229 void jtag_add_end_state(enum tap_state endstate);
 230 void jtag_add_sleep(u32 us);
 231 int jtag_execute_queue(void);
 232 int jtag_cancel_queue(void);
 233
 234 /* jtag commands */
 235 int handle_interface_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 236 int handle_jtag_speed_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 237 int handle_jtag_device_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 238 int handle_reset_config_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 239 int handle_jtag_nsrst_delay_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 240 int handle_jtag_ntrst_delay_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 241
 242 int handle_scan_chain_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 243
 244 int handle_endstate_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 245 int handle_jtag_reset_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 246 int handle_runtest_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 247 int handle_statemove_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 248 int handle_irscan_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 249 int handle_drscan_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 250
 251 int handle_verify_ircapture_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 252
 253 int jtag_register_event_callback(int (*callback)(enum jtag_event event, void *priv), void *priv)
 254 {
 255         jtag_event_callback_t **callbacks_p = &jtag_event_callbacks;
 256
 257         if (callback == NULL)
 258         {
 259                 return ERROR_INVALID_ARGUMENTS;
 260         }
 261
 262         if (*callbacks_p)
 263         {
 264                 while ((*callbacks_p)->next)
 265                         callbacks_p = &((*callbacks_p)->next);
 266                 callbacks_p = &((*callbacks_p)->next);
 267         }
 268
 269         (*callbacks_p) = malloc(sizeof(jtag_event_callback_t));
 270         (*callbacks_p)->callback = callback;
 271         (*callbacks_p)->priv = priv;
 272         (*callbacks_p)->next = NULL;
 273
 274         return ERROR_OK;
 275 }
 276
 277 int jtag_unregister_event_callback(int (*callback)(enum jtag_event event, void *priv))
 278 {
 279         jtag_event_callback_t **callbacks_p = &jtag_event_callbacks;
 280
 281         if (callback == NULL)
 282         {
 283                 return ERROR_INVALID_ARGUMENTS;
 284         }
 285
 286         while (*callbacks_p)
 287         {
 288                 jtag_event_callback_t **next = &((*callbacks_p)->next);
 289                 if ((*callbacks_p)->callback == callback)
 290                 {
 291                         free(*callbacks_p);
 292                         *callbacks_p = *next;
 293                 }
 294                 callbacks_p = next;
 295         }
 296
 297         return ERROR_OK;
 298 }
 299
 300 int jtag_call_event_callbacks(enum jtag_event event)
 301 {
 302         jtag_event_callback_t *callback = jtag_event_callbacks;
 303
 304         DEBUG("jtag event: %s", jtag_event_strings[event]);
 305
 306         while (callback)
 307         {
 308                 callback->callback(event, callback->priv);
 309                 callback = callback->next;
 310         }
 311
 312         return ERROR_OK;
 313 }
 314
 315 /* returns a pointer to the pointer of the last command in queue
 316  * this may be a pointer to the root pointer (jtag_command_queue)
 317  * or to the next member of the last but one command
 318  */
 319 jtag_command_t** jtag_get_last_command_p(void)
 320 {
 321 /*      jtag_command_t *cmd = jtag_command_queue;
 322
 323         if (cmd)
 324                 while (cmd->next)
 325                         cmd = cmd->next;
 326         else
 327                 return &jtag_command_queue;
 328
 329         return &cmd->next;*/
 330
 331         return last_comand_pointer;
 332 }
 333
 334 /* returns a pointer to the n-th device in the scan chain */
 335 jtag_device_t* jtag_get_device(int num)
 336 {
 337         jtag_device_t *device = jtag_devices;
 338         int i = 0;
 339
 340         while (device)
 341         {
 342                 if (num == i)
 343                         return device;
 344                 device = device->next;
 345                 i++;
 346         }
 347
 348         ERROR("jtag device number %d not defined", num);
 349         exit(-1);
 350 }
 351
 352 void* cmd_queue_alloc(size_t size)
 353 {
 354         cmd_queue_page_t **p_page = &cmd_queue_pages;
 355         int offset;
 356
 357         if (*p_page)
 358         {
 359                 while ((*p_page)->next)
 360                         p_page = &((*p_page)->next);
 361                 if (CMD_QUEUE_PAGE_SIZE - (*p_page)->used < size)
 362                         p_page = &((*p_page)->next);
 363         }
 364
 365         if (!*p_page)
 366         {
 367                 *p_page = malloc(sizeof(cmd_queue_page_t));
 368                 (*p_page)->used = 0;
 369                 (*p_page)->address = malloc(CMD_QUEUE_PAGE_SIZE);
 370                 (*p_page)->next = NULL;
 371         }
 372
 373         offset = (*p_page)->used;
 374         (*p_page)->used += size;
 375
 376         u8 *t=(u8 *)((*p_page)->address);
 377         return t + offset;
 378 }
 379
 380 void cmd_queue_free()
 381 {
 382         cmd_queue_page_t *page = cmd_queue_pages;
 383
 384         while (page)
 385         {
 386                 cmd_queue_page_t *last = page;
 387                 free(page->address);
 388                 page = page->next;
 389                 free(last);
 390         }
 391
 392         cmd_queue_pages = NULL;
 393 }
 394
 395 static void jtag_prelude1()
 396 {
 397         if (jtag_trst == 1)
 398         {
 399                 WARNING("JTAG command queued, while TRST is low (TAP in reset)");
 400                 jtag_error=ERROR_JTAG_TRST_ASSERTED;
 401                 return;
 402         }
 403
 404         if (cmd_queue_end_state == TAP_TLR)
 405                 jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
 406 }
 407
 408 static void jtag_prelude(enum tap_state state)
 409 {
 410         jtag_prelude1();
 411
 412         if (state != -1)
 413                 cmd_queue_end_state = state;
 414
 415         cmd_queue_cur_state = cmd_queue_end_state;
 416 }
 417
 418 void jtag_add_ir_scan(int num_fields, scan_field_t *fields, enum tap_state state)
 419 {
 420         jtag_prelude(state);
 421
 422         int retval=interface_jtag_add_ir_scan(num_fields, fields, cmd_queue_end_state);
 423         if (retval!=ERROR_OK)
 424                 jtag_error=retval;
 425 }
 426
 427 int MINIDRIVER(interface_jtag_add_ir_scan)(int num_fields, scan_field_t *fields, enum tap_state state)
 428 {
 429         jtag_command_t **last_cmd;
 430         jtag_device_t *device;
 431         int i, j;
 432         int scan_size = 0;
 433
 434
 435         last_cmd = jtag_get_last_command_p();
 436
 437         /* allocate memory for a new list member */
 438         *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
 439         (*last_cmd)->next = NULL;
 440         last_comand_pointer = &((*last_cmd)->next);
 441         (*last_cmd)->type = JTAG_SCAN;
 442
 443         /* allocate memory for ir scan command */
 444         (*last_cmd)->cmd.scan = cmd_queue_alloc(sizeof(scan_command_t));
 445         (*last_cmd)->cmd.scan->ir_scan = 1;
 446         (*last_cmd)->cmd.scan->num_fields = jtag_num_devices;   /* one field per device */
 447         (*last_cmd)->cmd.scan->fields = cmd_queue_alloc(jtag_num_devices * sizeof(scan_field_t));
 448         (*last_cmd)->cmd.scan->end_state = state;
 449
 450         for (i = 0; i < jtag_num_devices; i++)
 451         {
 452                 int found = 0;
 453                 device = jtag_get_device(i);
 454                 scan_size = device->ir_length;
 455                 (*last_cmd)->cmd.scan->fields[i].device = i;
 456                 (*last_cmd)->cmd.scan->fields[i].num_bits = scan_size;
 457                 (*last_cmd)->cmd.scan->fields[i].in_value = NULL;
 458                 (*last_cmd)->cmd.scan->fields[i].in_handler = NULL;     /* disable verification by default */
 459
 460                 /* search the list */
 461                 for (j = 0; j < num_fields; j++)
 462                 {
 463                         if (i == fields[j].device)
 464                         {
 465                                 found = 1;
 466                                 (*last_cmd)->cmd.scan->fields[i].out_value = buf_cpy(fields[j].out_value, cmd_queue_alloc(CEIL(scan_size, 8)), scan_size);
 467                                 (*last_cmd)->cmd.scan->fields[i].out_mask = buf_cpy(fields[j].out_mask, cmd_queue_alloc(CEIL(scan_size, 8)), scan_size);
 468
 469                                 if (jtag_verify_capture_ir)
 470                                 {
 471                                         if (fields[j].in_handler==NULL)
 472                                         {
 473                                                 jtag_set_check_value((*last_cmd)->cmd.scan->fields+i, device->expected, device->expected_mask, NULL);
 474                                         } else
 475                                         {
 476                                                 (*last_cmd)->cmd.scan->fields[i].in_handler = fields[j].in_handler;
 477                                                 (*last_cmd)->cmd.scan->fields[i].in_handler_priv = fields[j].in_handler_priv;
 478                                                 (*last_cmd)->cmd.scan->fields[i].in_check_value = device->expected;
 479                                                 (*last_cmd)->cmd.scan->fields[i].in_check_mask = device->expected_mask;
 480                                         }
 481                                 }
 482
 483                                 device->bypass = 0;
 484                                 break;
 485                         }
 486                 }
 487
 488                 if (!found)
 489                 {
 490                         /* if a device isn't listed, set it to BYPASS */
 491                         (*last_cmd)->cmd.scan->fields[i].out_value = buf_set_ones(cmd_queue_alloc(CEIL(scan_size, 8)), scan_size);
 492                         (*last_cmd)->cmd.scan->fields[i].out_mask = NULL;
 493                         device->bypass = 1;
 494
 495                 }
 496
 497                 /* update device information */
 498                 buf_cpy((*last_cmd)->cmd.scan->fields[i].out_value, jtag_get_device(i)->cur_instr, scan_size);
 499         }
 500
 501         return ERROR_OK;
 502 }
 503
 504 void jtag_add_plain_ir_scan(int num_fields, scan_field_t *fields, enum tap_state state)
 505 {
 506         jtag_prelude(state);
 507
 508         int retval=interface_jtag_add_plain_ir_scan(num_fields, fields, cmd_queue_end_state);
 509         if (retval!=ERROR_OK)
 510                 jtag_error=retval;
 511 }
 512
 513 int MINIDRIVER(interface_jtag_add_plain_ir_scan)(int num_fields, scan_field_t *fields, enum tap_state state)
 514 {
 515         int i;
 516         jtag_command_t **last_cmd;
 517
 518         last_cmd = jtag_get_last_command_p();
 519
 520         /* allocate memory for a new list member */
 521         *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
 522         (*last_cmd)->next = NULL;
 523         last_comand_pointer = &((*last_cmd)->next);
 524         (*last_cmd)->type = JTAG_SCAN;
 525
 526         /* allocate memory for ir scan command */
 527         (*last_cmd)->cmd.scan = cmd_queue_alloc(sizeof(scan_command_t));
 528         (*last_cmd)->cmd.scan->ir_scan = 1;
 529         (*last_cmd)->cmd.scan->num_fields = num_fields;
 530         (*last_cmd)->cmd.scan->fields = cmd_queue_alloc(num_fields * sizeof(scan_field_t));
 531         (*last_cmd)->cmd.scan->end_state = state;
 532
 533         for (i = 0; i < num_fields; i++)
 534         {
 535                 int num_bits = fields[i].num_bits;
 536                 int num_bytes = CEIL(fields[i].num_bits, 8);
 537                 (*last_cmd)->cmd.scan->fields[i].device = fields[i].device;
 538                 (*last_cmd)->cmd.scan->fields[i].num_bits = num_bits;
 539                 (*last_cmd)->cmd.scan->fields[i].out_value = buf_cpy(fields[i].out_value, cmd_queue_alloc(num_bytes), num_bits);
 540                 (*last_cmd)->cmd.scan->fields[i].out_mask = buf_cpy(fields[i].out_mask, cmd_queue_alloc(num_bytes), num_bits);
 541                 (*last_cmd)->cmd.scan->fields[i].in_value = fields[i].in_value;
 542                 (*last_cmd)->cmd.scan->fields[i].in_check_value = fields[i].in_check_value;
 543                 (*last_cmd)->cmd.scan->fields[i].in_check_mask = fields[i].in_check_mask;
 544                 (*last_cmd)->cmd.scan->fields[i].in_handler = NULL;
 545                 (*last_cmd)->cmd.scan->fields[i].in_handler_priv = NULL;
 546         }
 547         return ERROR_OK;
 548 }
 549
 550 void jtag_add_dr_scan(int num_fields, scan_field_t *fields, enum tap_state state)
 551 {
 552         jtag_prelude(state);
 553
 554         int retval=interface_jtag_add_dr_scan(num_fields, fields, cmd_queue_end_state);
 555         if (retval!=ERROR_OK)
 556                 jtag_error=retval;
 557 }
 558
 559 int MINIDRIVER(interface_jtag_add_dr_scan)(int num_fields, scan_field_t *fields, enum tap_state state)
 560 {
 561         int i, j;
 562         int bypass_devices = 0;
 563         int field_count = 0;
 564         int scan_size;
 565
 566         jtag_command_t **last_cmd = jtag_get_last_command_p();
 567         jtag_device_t *device = jtag_devices;
 568
 569         /* count devices in bypass */
 570         while (device)
 571         {
 572                 if (device->bypass)
 573                         bypass_devices++;
 574                 device = device->next;
 575         }
 576
 577         /* allocate memory for a new list member */
 578         *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
 579         last_comand_pointer = &((*last_cmd)->next);
 580         (*last_cmd)->next = NULL;
 581         (*last_cmd)->type = JTAG_SCAN;
 582
 583         /* allocate memory for dr scan command */
 584         (*last_cmd)->cmd.scan = cmd_queue_alloc(sizeof(scan_command_t));
 585         (*last_cmd)->cmd.scan->ir_scan = 0;
 586         (*last_cmd)->cmd.scan->num_fields = num_fields + bypass_devices;
 587         (*last_cmd)->cmd.scan->fields = cmd_queue_alloc((num_fields + bypass_devices) * sizeof(scan_field_t));
 588         (*last_cmd)->cmd.scan->end_state = state;
 589
 590         for (i = 0; i < jtag_num_devices; i++)
 591         {
 592                 int found = 0;
 593                 (*last_cmd)->cmd.scan->fields[field_count].device = i;
 594
 595                 for (j = 0; j < num_fields; j++)
 596                 {
 597                         if (i == fields[j].device)
 598                         {
 599                                 found = 1;
 600                                 scan_size = fields[j].num_bits;
 601                                 (*last_cmd)->cmd.scan->fields[field_count].num_bits = scan_size;
 602                                 (*last_cmd)->cmd.scan->fields[field_count].out_value = buf_cpy(fields[j].out_value, cmd_queue_alloc(CEIL(scan_size, 8)), scan_size);
 603                                 (*last_cmd)->cmd.scan->fields[field_count].out_mask = buf_cpy(fields[j].out_mask, cmd_queue_alloc(CEIL(scan_size, 8)), scan_size);
 604                                 (*last_cmd)->cmd.scan->fields[field_count].in_value = fields[j].in_value;
 605                                 (*last_cmd)->cmd.scan->fields[field_count].in_check_value = fields[j].in_check_value;
 606                                 (*last_cmd)->cmd.scan->fields[field_count].in_check_mask = fields[j].in_check_mask;
 607                                 (*last_cmd)->cmd.scan->fields[field_count].in_handler = fields[j].in_handler;
 608                                 (*last_cmd)->cmd.scan->fields[field_count++].in_handler_priv = fields[j].in_handler_priv;
 609                         }
 610                 }
 611                 if (!found)
 612                 {
 613 #ifdef _DEBUG_JTAG_IO_
 614                         /* if a device isn't listed, the BYPASS register should be selected */
 615                         if (!jtag_get_device(i)->bypass)
 616                         {
 617                                 ERROR("BUG: no scan data for a device not in BYPASS");
 618                                 exit(-1);
 619                         }
 620 #endif
 621                         /* program the scan field to 1 bit length, and ignore it's value */
 622                         (*last_cmd)->cmd.scan->fields[field_count].num_bits = 1;
 623                         (*last_cmd)->cmd.scan->fields[field_count].out_value = NULL;
 624                         (*last_cmd)->cmd.scan->fields[field_count].out_mask = NULL;
 625                         (*last_cmd)->cmd.scan->fields[field_count].in_value = NULL;
 626                         (*last_cmd)->cmd.scan->fields[field_count].in_check_value = NULL;
 627                         (*last_cmd)->cmd.scan->fields[field_count].in_check_mask = NULL;
 628                         (*last_cmd)->cmd.scan->fields[field_count].in_handler = NULL;
 629                         (*last_cmd)->cmd.scan->fields[field_count++].in_handler_priv = NULL;
 630                 }
 631                 else
 632                 {
 633 #ifdef _DEBUG_JTAG_IO_
 634                         /* if a device is listed, the BYPASS register must not be selected */
 635                         if (jtag_get_device(i)->bypass)
 636                         {
 637                                 ERROR("BUG: scan data for a device in BYPASS");
 638                                 exit(-1);
 639                         }
 640 #endif
 641                 }
 642         }
 643         return ERROR_OK;
 644 }
 645
 646 void MINIDRIVER(interface_jtag_add_dr_out)(int device_num,
 647                 int num_fields,
 648                 int *num_bits,
 649                 u32 *value,
 650                 enum tap_state end_state)
 651 {
 652         int i;
 653         int field_count = 0;
 654         int scan_size;
 655         int bypass_devices = 0;
 656
 657         jtag_command_t **last_cmd = jtag_get_last_command_p();
 658         jtag_device_t *device = jtag_devices;
 659         /* count devices in bypass */
 660         while (device)
 661         {
 662                 if (device->bypass)
 663                         bypass_devices++;
 664                 device = device->next;
 665         }
 666
 667         /* allocate memory for a new list member */
 668         *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
 669         last_comand_pointer = &((*last_cmd)->next);
 670         (*last_cmd)->next = NULL;
 671         (*last_cmd)->type = JTAG_SCAN;
 672
 673         /* allocate memory for dr scan command */
 674         (*last_cmd)->cmd.scan = cmd_queue_alloc(sizeof(scan_command_t));
 675         (*last_cmd)->cmd.scan->ir_scan = 0;
 676         (*last_cmd)->cmd.scan->num_fields = num_fields + bypass_devices;
 677         (*last_cmd)->cmd.scan->fields = cmd_queue_alloc((num_fields + bypass_devices) * sizeof(scan_field_t));
 678         (*last_cmd)->cmd.scan->end_state = end_state;
 679
 680         for (i = 0; i < jtag_num_devices; i++)
 681         {
 682                 (*last_cmd)->cmd.scan->fields[field_count].device = i;
 683
 684                 if (i == device_num)
 685                 {
 686                         int j;
 687 #ifdef _DEBUG_JTAG_IO_
 688                         /* if a device is listed, the BYPASS register must not be selected */
 689                         if (jtag_get_device(i)->bypass)
 690                         {
 691                                 ERROR("BUG: scan data for a device in BYPASS");
 692                                 exit(-1);
 693                         }
 694 #endif
 695                         for (j = 0; j < num_fields; j++)
 696                         {
 697                                 u8 out_value[4];
 698                                 scan_size = num_bits[j];
 699                                 buf_set_u32(out_value, 0, scan_size, value[j]);
 700                                 (*last_cmd)->cmd.scan->fields[field_count].num_bits = scan_size;
 701                                 (*last_cmd)->cmd.scan->fields[field_count].out_value = buf_cpy(out_value, cmd_queue_alloc(CEIL(scan_size, 8)), scan_size);
 702                                 (*last_cmd)->cmd.scan->fields[field_count].out_mask = NULL;
 703                                 (*last_cmd)->cmd.scan->fields[field_count].in_value = NULL;
 704                                 (*last_cmd)->cmd.scan->fields[field_count].in_check_value = NULL;
 705                                 (*last_cmd)->cmd.scan->fields[field_count].in_check_mask = NULL;
 706                                 (*last_cmd)->cmd.scan->fields[field_count].in_handler = NULL;
 707                                 (*last_cmd)->cmd.scan->fields[field_count++].in_handler_priv = NULL;
 708                         }
 709                 } else
 710                 {
 711 #ifdef _DEBUG_JTAG_IO_
 712                         /* if a device isn't listed, the BYPASS register should be selected */
 713                         if (!jtag_get_device(i)->bypass)
 714                         {
 715                                 ERROR("BUG: no scan data for a device not in BYPASS");
 716                                 exit(-1);
 717                         }
 718 #endif
 719                         /* program the scan field to 1 bit length, and ignore it's value */
 720                         (*last_cmd)->cmd.scan->fields[field_count].num_bits = 1;
 721                         (*last_cmd)->cmd.scan->fields[field_count].out_value = NULL;
 722                         (*last_cmd)->cmd.scan->fields[field_count].out_mask = NULL;
 723                         (*last_cmd)->cmd.scan->fields[field_count].in_value = NULL;
 724                         (*last_cmd)->cmd.scan->fields[field_count].in_check_value = NULL;
 725                         (*last_cmd)->cmd.scan->fields[field_count].in_check_mask = NULL;
 726                         (*last_cmd)->cmd.scan->fields[field_count].in_handler = NULL;
 727                         (*last_cmd)->cmd.scan->fields[field_count++].in_handler_priv = NULL;
 728                 }
 729         }
 730 }
 731
 732
 733
 734
 735 void jtag_add_plain_dr_scan(int num_fields, scan_field_t *fields, enum tap_state state)
 736 {
 737         jtag_prelude(state);
 738
 739         int retval=interface_jtag_add_plain_dr_scan(num_fields, fields, cmd_queue_end_state);
 740         if (retval!=ERROR_OK)
 741                 jtag_error=retval;
 742 }
 743
 744 int MINIDRIVER(interface_jtag_add_plain_dr_scan)(int num_fields, scan_field_t *fields, enum tap_state state)
 745 {
 746         int i;
 747         jtag_command_t **last_cmd = jtag_get_last_command_p();
 748
 749         /* allocate memory for a new list member */
 750         *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
 751         last_comand_pointer = &((*last_cmd)->next);
 752         (*last_cmd)->next = NULL;
 753         (*last_cmd)->type = JTAG_SCAN;
 754
 755         /* allocate memory for scan command */
 756         (*last_cmd)->cmd.scan = cmd_queue_alloc(sizeof(scan_command_t));
 757         (*last_cmd)->cmd.scan->ir_scan = 0;
 758         (*last_cmd)->cmd.scan->num_fields = num_fields;
 759         (*last_cmd)->cmd.scan->fields = cmd_queue_alloc(num_fields * sizeof(scan_field_t));
 760         (*last_cmd)->cmd.scan->end_state = state;
 761
 762         for (i = 0; i < num_fields; i++)
 763         {
 764                 int num_bits = fields[i].num_bits;
 765                 int num_bytes = CEIL(fields[i].num_bits, 8);
 766                 (*last_cmd)->cmd.scan->fields[i].device = fields[i].device;
 767                 (*last_cmd)->cmd.scan->fields[i].num_bits = num_bits;
 768                 (*last_cmd)->cmd.scan->fields[i].out_value = buf_cpy(fields[i].out_value, cmd_queue_alloc(num_bytes), num_bits);
 769                 (*last_cmd)->cmd.scan->fields[i].out_mask = buf_cpy(fields[i].out_mask, cmd_queue_alloc(num_bytes), num_bits);
 770                 (*last_cmd)->cmd.scan->fields[i].in_value = fields[i].in_value;
 771                 (*last_cmd)->cmd.scan->fields[i].in_check_value = fields[i].in_check_value;
 772                 (*last_cmd)->cmd.scan->fields[i].in_check_mask = fields[i].in_check_mask;
 773                 (*last_cmd)->cmd.scan->fields[i].in_handler = fields[i].in_handler;
 774                 (*last_cmd)->cmd.scan->fields[i].in_handler_priv = fields[i].in_handler_priv;
 775         }
 776
 777         return ERROR_OK;
 778 }
 779 void jtag_add_statemove(enum tap_state state)
 780 {
 781         jtag_prelude(state);
 782
 783         int retval;
 784         retval=interface_jtag_add_statemove(cmd_queue_end_state);
 785         if (retval!=ERROR_OK)
 786                 jtag_error=retval;
 787 }
 788
 789 int MINIDRIVER(interface_jtag_add_statemove)(enum tap_state state)
 790 {
 791         jtag_command_t **last_cmd = jtag_get_last_command_p();
 792
 793         /* allocate memory for a new list member */
 794         *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
 795         last_comand_pointer = &((*last_cmd)->next);
 796         (*last_cmd)->next = NULL;
 797         (*last_cmd)->type = JTAG_STATEMOVE;
 798
 799         (*last_cmd)->cmd.statemove = cmd_queue_alloc(sizeof(statemove_command_t));
 800         (*last_cmd)->cmd.statemove->end_state = state;
 801
 802
 803         return ERROR_OK;
 804 }
 805
 806 void jtag_add_pathmove(int num_states, enum tap_state *path)
 807 {
 808         /* the last state has to be a stable state */
 809         if (tap_move_map[path[num_states - 1]] == -1)
 810         {
 811                 ERROR("BUG: TAP path doesn't finish in a stable state");
 812                 exit(-1);
 813         }
 814
 815         enum tap_state cur_state=cmd_queue_cur_state;
 816         int i;
 817         for (i=0; i<num_states; i++)
 818         {
 819                 if ((tap_transitions[cur_state].low != path[i])&&
 820                                 (tap_transitions[cur_state].high != path[i]))
 821                 {
 822                         ERROR("BUG: %s -> %s isn't a valid TAP transition", tap_state_strings[cur_state], tap_state_strings[path[i]]);
 823                         exit(-1);
 824                 }
 825                 cur_state = path[i];
 826         }
 827
 828         jtag_prelude1();
 829
 830         cmd_queue_cur_state = path[num_states - 1];
 831
 832         int retval=interface_jtag_add_pathmove(num_states, path);
 833         if (retval!=ERROR_OK)
 834                 jtag_error=retval;
 835 }
 836
 837
 838 int MINIDRIVER(interface_jtag_add_pathmove)(int num_states, enum tap_state *path)
 839 {
 840         jtag_command_t **last_cmd = jtag_get_last_command_p();
 841         int i;
 842
 843         /* allocate memory for a new list member */
 844         *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
 845         last_comand_pointer = &((*last_cmd)->next);
 846         (*last_cmd)->next = NULL;
 847         (*last_cmd)->type = JTAG_PATHMOVE;
 848
 849         (*last_cmd)->cmd.pathmove = cmd_queue_alloc(sizeof(pathmove_command_t));
 850         (*last_cmd)->cmd.pathmove->num_states = num_states;
 851         (*last_cmd)->cmd.pathmove->path = cmd_queue_alloc(sizeof(enum tap_state) * num_states);
 852
 853         for (i = 0; i < num_states; i++)
 854                 (*last_cmd)->cmd.pathmove->path[i] = path[i];
 855
 856         return ERROR_OK;
 857 }
 858
 859 int MINIDRIVER(interface_jtag_add_runtest)(int num_cycles, enum tap_state state)
 860 {
 861         jtag_command_t **last_cmd = jtag_get_last_command_p();
 862
 863         /* allocate memory for a new list member */
 864         *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
 865         (*last_cmd)->next = NULL;
 866         last_comand_pointer = &((*last_cmd)->next);
 867         (*last_cmd)->type = JTAG_RUNTEST;
 868
 869         (*last_cmd)->cmd.runtest = cmd_queue_alloc(sizeof(runtest_command_t));
 870         (*last_cmd)->cmd.runtest->num_cycles = num_cycles;
 871         (*last_cmd)->cmd.runtest->end_state = state;
 872
 873         return ERROR_OK;
 874 }
 875
 876 void jtag_add_runtest(int num_cycles, enum tap_state state)
 877 {
 878         jtag_prelude(state);
 879
 880         /* executed by sw or hw fifo */
 881         int retval=interface_jtag_add_runtest(num_cycles, cmd_queue_end_state);
 882         if (retval!=ERROR_OK)
 883                 jtag_error=retval;
 884 }
 885
 886 int jtag_add_reset(int req_trst, int req_srst)
 887 {
 888         int trst_with_tms = 0;
 889         int retval;
 890
 891         if (req_trst == -1)
 892                 req_trst = jtag_trst;
 893
 894         if (req_srst == -1)
 895                 req_srst = jtag_srst;
 896
 897         /* Make sure that jtag_reset_config allows the requested reset */
 898         /* if SRST pulls TRST, we can't fulfill srst == 1 with trst == 0 */
 899         if (((jtag_reset_config & RESET_SRST_PULLS_TRST) && (req_srst == 1)) && (req_trst == 0))
 900         {
 901                 ERROR("requested reset would assert trst");
 902                 return ERROR_JTAG_RESET_WOULD_ASSERT_TRST;
 903         }
 904
 905         /* if TRST pulls SRST, we reset with TAP T-L-R */
 906         if (((jtag_reset_config & RESET_TRST_PULLS_SRST) && (req_trst == 1)) && (req_srst == 0))
 907         {
 908                 req_trst = 0;
 909                 trst_with_tms = 1;
 910         }
 911
 912         if (req_srst && !(jtag_reset_config & RESET_HAS_SRST))
 913         {
 914                 ERROR("requested nSRST assertion, but the current configuration doesn't support this");
 915                 return ERROR_JTAG_RESET_CANT_SRST;
 916         }
 917
 918         if (req_trst && !(jtag_reset_config & RESET_HAS_TRST))
 919         {
 920                 req_trst = 0;
 921                 trst_with_tms = 1;
 922         }
 923
 924         jtag_trst = req_trst;
 925         jtag_srst = req_srst;
 926
 927         retval = interface_jtag_add_reset(req_trst, req_srst);
 928         if (retval!=ERROR_OK)
 929         {
 930                 jtag_error=retval;
 931                 return retval;
 932         }
 933
 934         if (jtag_srst)
 935         {
 936                 DEBUG("SRST line asserted");
 937         }
 938         else
 939         {
 940                 DEBUG("SRST line released");
 941                 if (jtag_nsrst_delay)
 942                         jtag_add_sleep(jtag_nsrst_delay * 1000);
 943         }
 944
 945         if (trst_with_tms)
 946         {
 947                 DEBUG("JTAG reset with tms instead of TRST");
 948                 jtag_add_end_state(TAP_TLR);
 949                 jtag_add_statemove(TAP_TLR);
 950                 jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
 951                 return ERROR_OK;
 952         }
 953
 954         if (jtag_trst)
 955         {
 956                 /* we just asserted nTRST, so we're now in Test-Logic-Reset,
 957                  * and inform possible listeners about this
 958                  */
 959                 DEBUG("TRST line asserted");
 960                 cmd_queue_cur_state = TAP_TLR;
 961                 jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
 962         }
 963         else
 964         {
 965                 /* the nTRST line got deasserted, so we're still in Test-Logic-Reset,
 966                  * but we might want to add a delay to give the TAP time to settle
 967                  */
 968                 DEBUG("Now in TAP_TLR - Test-Logic-Reset(either due to TRST line asserted or tms reset)");
 969                 if (jtag_ntrst_delay)
 970                         jtag_add_sleep(jtag_ntrst_delay * 1000);
 971         }
 972         return ERROR_OK;
 973 }
 974
 975 int MINIDRIVER(interface_jtag_add_reset)(int req_trst, int req_srst)
 976 {
 977         jtag_command_t **last_cmd = jtag_get_last_command_p();
 978
 979         /* allocate memory for a new list member */
 980         *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
 981         (*last_cmd)->next = NULL;
 982         last_comand_pointer = &((*last_cmd)->next);
 983         (*last_cmd)->type = JTAG_RESET;
 984
 985         (*last_cmd)->cmd.reset = cmd_queue_alloc(sizeof(reset_command_t));
 986         (*last_cmd)->cmd.reset->trst = req_trst;
 987         (*last_cmd)->cmd.reset->srst = req_srst;
 988
 989
 990         return ERROR_OK;
 991 }
 992
 993 void jtag_add_end_state(enum tap_state state)
 994 {
 995         cmd_queue_end_state = state;
 996 }
 997
 998 int MINIDRIVER(interface_jtag_add_sleep)(u32 us)
 999 {
1000         jtag_command_t **last_cmd = jtag_get_last_command_p();
1001
1002         /* allocate memory for a new list member */
1003         *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
1004         (*last_cmd)->next = NULL;
1005         last_comand_pointer = &((*last_cmd)->next);
1006         (*last_cmd)->type = JTAG_SLEEP;
1007
1008         (*last_cmd)->cmd.sleep = cmd_queue_alloc(sizeof(sleep_command_t));
1009         (*last_cmd)->cmd.sleep->us = us;
1010
1011         return ERROR_OK;
1012 }
1013
1014 void jtag_add_sleep(u32 us)
1015 {
1016         int retval=interface_jtag_add_sleep(us);
1017         if (retval!=ERROR_OK)
1018                 jtag_error=retval;
1019         return;
1020 }
1021
1022 int jtag_scan_size(scan_command_t *cmd)
1023 {
1024         int bit_count = 0;
1025         int i;
1026
1027         /* count bits in scan command */
1028         for (i = 0; i < cmd->num_fields; i++)
1029         {
1030                 bit_count += cmd->fields[i].num_bits;
1031         }
1032
1033         return bit_count;
1034 }
1035
1036 int jtag_build_buffer(scan_command_t *cmd, u8 **buffer)
1037 {
1038         int bit_count = 0;
1039         int i;
1040
1041         bit_count = jtag_scan_size(cmd);
1042         *buffer = malloc(CEIL(bit_count, 8));
1043
1044         bit_count = 0;
1045
1046         for (i = 0; i < cmd->num_fields; i++)
1047         {
1048                 if (cmd->fields[i].out_value)
1049                 {
1050 #ifdef _DEBUG_JTAG_IO_
1051                         char* char_buf = buf_to_str(cmd->fields[i].out_value, (cmd->fields[i].num_bits > 64) ? 64 : cmd->fields[i].num_bits, 16);
1052 #endif
1053                         buf_set_buf(cmd->fields[i].out_value, 0, *buffer, bit_count, cmd->fields[i].num_bits);
1054 #ifdef _DEBUG_JTAG_IO_
1055                         DEBUG("fields[%i].out_value: 0x%s", i, char_buf);
1056                         free(char_buf);
1057 #endif
1058                 }
1059
1060                 bit_count += cmd->fields[i].num_bits;
1061         }
1062
1063         return bit_count;
1064
1065 }
1066
1067 int jtag_read_buffer(u8 *buffer, scan_command_t *cmd)
1068 {
1069         int i;
1070         int bit_count = 0;
1071         int retval;
1072
1073         /* we return ERROR_OK, unless a check fails, or a handler reports a problem */
1074         retval = ERROR_OK;
1075
1076         for (i = 0; i < cmd->num_fields; i++)
1077         {
1078                 /* if neither in_value nor in_handler
1079                  * are specified we don't have to examine this field
1080                  */
1081                 if (cmd->fields[i].in_value || cmd->fields[i].in_handler)
1082                 {
1083                         int num_bits = cmd->fields[i].num_bits;
1084                         u8 *captured = buf_set_buf(buffer, bit_count, malloc(CEIL(num_bits, 8)), 0, num_bits);
1085
1086 #ifdef _DEBUG_JTAG_IO_
1087                         char *char_buf;
1088
1089                         char_buf = buf_to_str(captured, (num_bits > 64) ? 64 : num_bits, 16);
1090                         DEBUG("fields[%i].in_value: 0x%s", i, char_buf);
1091                         free(char_buf);
1092 #endif
1093
1094                         if (cmd->fields[i].in_value)
1095                         {
1096                                 buf_cpy(captured, cmd->fields[i].in_value, num_bits);
1097
1098                                 if (cmd->fields[i].in_handler)
1099                                 {
1100                                         if (cmd->fields[i].in_handler(cmd->fields[i].in_value, cmd->fields[i].in_handler_priv, cmd->fields+i) != ERROR_OK)
1101                                         {
1102                                                 WARNING("in_handler reported a failed check");
1103                                                 retval = ERROR_JTAG_QUEUE_FAILED;
1104                                         }
1105                                 }
1106                         }
1107
1108                         /* no in_value specified, but a handler takes care of the scanned data */
1109                         if (cmd->fields[i].in_handler && (!cmd->fields[i].in_value))
1110                         {
1111                                 if (cmd->fields[i].in_handler(captured, cmd->fields[i].in_handler_priv, cmd->fields+i) != ERROR_OK)
1112                                 {
1113                                         /* We're going to call the error:handler later, but if the in_handler
1114                                          * reported an error we report this failure upstream
1115                                          */
1116                                         WARNING("in_handler reported a failed check");
1117                                         retval = ERROR_JTAG_QUEUE_FAILED;
1118                                 }
1119                         }
1120
1121                         free(captured);
1122                 }
1123                 bit_count += cmd->fields[i].num_bits;
1124         }
1125
1126         return retval;
1127 }
1128
1129 int jtag_check_value(u8 *captured, void *priv, scan_field_t *field)
1130 {
1131         int retval = ERROR_OK;
1132         int num_bits = field->num_bits;
1133
1134         int compare_failed = 0;
1135
1136         if (field->in_check_mask)
1137                 compare_failed = buf_cmp_mask(captured, field->in_check_value, field->in_check_mask, num_bits);
1138         else
1139                 compare_failed = buf_cmp(captured, field->in_check_value, num_bits);
1140
1141         if (compare_failed)
1142                 {
1143                 /* An error handler could have caught the failing check
1144                  * only report a problem when there wasn't a handler, or if the handler
1145                  * acknowledged the error
1146                  */
1147                 if (compare_failed)
1148                 {
1149                         char *captured_char = buf_to_str(captured, (num_bits > 64) ? 64 : num_bits, 16);
1150                         char *in_check_value_char = buf_to_str(field->in_check_value, (num_bits > 64) ? 64 : num_bits, 16);
1151
1152                         if (field->in_check_mask)
1153                         {
1154                                 char *in_check_mask_char;
1155                                 in_check_mask_char = buf_to_str(field->in_check_mask, (num_bits > 64) ? 64 : num_bits, 16);
1156                                 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);
1157                                 free(in_check_mask_char);
1158                         }
1159                         else
1160                         {
1161                                 WARNING("value captured during scan didn't pass the requested check: captured: 0x%s check_value: 0x%s", captured_char, in_check_value_char);
1162                         }
1163
1164                         free(captured_char);
1165                         free(in_check_value_char);
1166
1167                         retval = ERROR_JTAG_QUEUE_FAILED;
1168                 }
1169
1170         }
1171         return retval;
1172 }
1173
1174 /*
1175   set up checking of this field using the in_handler. The values passed in must be valid until
1176   after jtag_execute() has completed.
1177  */
1178 void jtag_set_check_value(scan_field_t *field, u8 *value, u8 *mask, error_handler_t *in_error_handler)
1179 {
1180         if (value)
1181                 field->in_handler = jtag_check_value;
1182         else
1183                 field->in_handler = NULL;       /* No check, e.g. embeddedice uses value==NULL to indicate no check */
1184         field->in_handler_priv = NULL;  /* this will be filled in at the invocation site to point to the field duplicate */
1185         field->in_check_value = value;
1186         field->in_check_mask = mask;
1187 }
1188
1189 enum scan_type jtag_scan_type(scan_command_t *cmd)
1190 {
1191         int i;
1192         int type = 0;
1193
1194         for (i = 0; i < cmd->num_fields; i++)
1195         {
1196                 if (cmd->fields[i].in_value || cmd->fields[i].in_handler)
1197                         type |= SCAN_IN;
1198                 if (cmd->fields[i].out_value)
1199                         type |= SCAN_OUT;
1200         }
1201
1202         return type;
1203 }
1204
1205 int MINIDRIVER(interface_jtag_execute_queue)(void)
1206 {
1207         int retval;
1208
1209         retval = jtag->execute_queue();
1210
1211         cmd_queue_free();
1212
1213         jtag_command_queue = NULL;
1214         last_comand_pointer = &jtag_command_queue;
1215
1216         return retval;
1217 }
1218
1219 int jtag_execute_queue(void)
1220 {
1221         int retval=interface_jtag_execute_queue();
1222         if (retval==ERROR_OK)
1223         {
1224                 retval=jtag_error;
1225         }
1226         jtag_error=ERROR_OK;
1227         return retval;
1228 }
1229
1230 int jtag_reset_callback(enum jtag_event event, void *priv)
1231 {
1232         jtag_device_t *device = priv;
1233
1234         DEBUG("-");
1235
1236         if (event == JTAG_TRST_ASSERTED)
1237         {
1238                 buf_set_ones(device->cur_instr, device->ir_length);
1239                 device->bypass = 1;
1240         }
1241
1242         return ERROR_OK;
1243 }
1244
1245 void jtag_sleep(u32 us)
1246 {
1247         usleep(us);
1248 }
1249
1250 /* Try to examine chain layout according to IEEE 1149.1 §12
1251  */
1252 int jtag_examine_chain()
1253 {
1254         jtag_device_t *device = jtag_devices;
1255         scan_field_t field;
1256         u8 idcode_buffer[JTAG_MAX_CHAIN_SIZE * 4];
1257         int i;
1258         int bit_count;
1259         int device_count = 0;
1260         u8 zero_check = 0x0;
1261         u8 one_check = 0xff;
1262
1263         field.device = 0;
1264         field.num_bits = sizeof(idcode_buffer) * 8;
1265         field.out_value = idcode_buffer;
1266         field.out_mask = NULL;
1267         field.in_value = idcode_buffer;
1268         field.in_check_value = NULL;
1269         field.in_check_mask = NULL;
1270         field.in_handler = NULL;
1271         field.in_handler_priv = NULL;
1272
1273         for (i = 0; i < JTAG_MAX_CHAIN_SIZE; i++)
1274         {
1275                 buf_set_u32(idcode_buffer, i * 32, 32, 0x000000FF);
1276         }
1277
1278         jtag_add_plain_dr_scan(1, &field, TAP_TLR);
1279         jtag_execute_queue();
1280
1281         for (i = 0; i < JTAG_MAX_CHAIN_SIZE * 4; i++)
1282         {
1283                 zero_check |= idcode_buffer[i];
1284                 one_check &= idcode_buffer[i];
1285         }
1286
1287         /* if there wasn't a single non-zero bit or if all bits were one, the scan isn't valid */
1288         if ((zero_check == 0x00) || (one_check == 0xff))
1289         {
1290                 ERROR("JTAG communication failure, check connection, JTAG interface, target power etc.");
1291                 return ERROR_JTAG_INIT_FAILED;
1292         }
1293
1294         for (bit_count = 0; bit_count < (JTAG_MAX_CHAIN_SIZE * 32) - 31;)
1295         {
1296                 u32 idcode = buf_get_u32(idcode_buffer, bit_count, 32);
1297                 if ((idcode & 1) == 0)
1298                 {
1299                         /* LSB must not be 0, this indicates a device in bypass */
1300                         device_count++;
1301
1302                         bit_count += 1;
1303                 }
1304                 else
1305                 {
1306                         u32 manufacturer;
1307                         u32 part;
1308                         u32 version;
1309
1310                         if (idcode == 0x000000FF)
1311                         {
1312                                 /* End of chain (invalid manufacturer ID) */
1313                                 break;
1314                         }
1315
1316                         if (device)
1317                         {
1318                                 device->idcode = idcode;
1319                                 device = device->next;
1320                         }
1321                         device_count++;
1322
1323                         manufacturer = (idcode & 0xffe) >> 1;
1324                         part = (idcode & 0xffff000) >> 12;
1325                         version = (idcode & 0xf0000000) >> 28;
1326
1327                         INFO("JTAG device found: 0x%8.8x (Manufacturer: 0x%3.3x, Part: 0x%4.4x, Version: 0x%1.1x)",
1328                                 idcode, manufacturer, part, version);
1329
1330                         bit_count += 32;
1331                 }
1332         }
1333
1334         /* see if number of discovered devices matches configuration */
1335         if (device_count != jtag_num_devices)
1336         {
1337                 ERROR("number of discovered devices in JTAG chain (%i) doesn't match configuration (%i)",
1338                                 device_count, jtag_num_devices);
1339                 ERROR("check the config file and ensure proper JTAG communication (connections, speed, ...)");
1340                 return ERROR_JTAG_INIT_FAILED;
1341         }
1342
1343         return ERROR_OK;
1344 }
1345
1346 int jtag_validate_chain()
1347 {
1348         jtag_device_t *device = jtag_devices;
1349         int total_ir_length = 0;
1350         u8 *ir_test = NULL;
1351         scan_field_t field;
1352         int chain_pos = 0;
1353
1354         while (device)
1355         {
1356                 total_ir_length += device->ir_length;
1357                 device = device->next;
1358         }
1359
1360         total_ir_length += 2;
1361         ir_test = malloc(CEIL(total_ir_length, 8));
1362         buf_set_ones(ir_test, total_ir_length);
1363
1364         field.device = 0;
1365         field.num_bits = total_ir_length;
1366         field.out_value = ir_test;
1367         field.out_mask = NULL;
1368         field.in_value = ir_test;
1369         field.in_check_value = NULL;
1370         field.in_check_mask = NULL;
1371         field.in_handler = NULL;
1372         field.in_handler_priv = NULL;
1373
1374         jtag_add_plain_ir_scan(1, &field, TAP_TLR);
1375         jtag_execute_queue();
1376
1377         device = jtag_devices;
1378         while (device)
1379         {
1380                 if (buf_get_u32(ir_test, chain_pos, 2) != 0x1)
1381                 {
1382                         char *cbuf = buf_to_str(ir_test, total_ir_length, 16);
1383                         ERROR("Error validating JTAG scan chain, IR mismatch, scan returned 0x%s", cbuf);
1384                         free(cbuf);
1385                         free(ir_test);
1386                         return ERROR_JTAG_INIT_FAILED;
1387                 }
1388                 chain_pos += device->ir_length;
1389                 device = device->next;
1390         }
1391
1392         if (buf_get_u32(ir_test, chain_pos, 2) != 0x3)
1393         {
1394                 char *cbuf = buf_to_str(ir_test, total_ir_length, 16);
1395                 ERROR("Error validating JTAG scan chain, IR mismatch, scan returned 0x%s", cbuf);
1396                 free(cbuf);
1397                 free(ir_test);
1398                 return ERROR_JTAG_INIT_FAILED;
1399         }
1400
1401         free(ir_test);
1402
1403         return ERROR_OK;
1404 }
1405
1406 int jtag_register_commands(struct command_context_s *cmd_ctx)
1407 {
1408         register_command(cmd_ctx, NULL, "interface", handle_interface_command,
1409                 COMMAND_CONFIG, NULL);
1410         register_command(cmd_ctx, NULL, "jtag_speed", handle_jtag_speed_command,
1411                 COMMAND_ANY, "set jtag speed (if supported) <reset speed> [<post reset speed, default value is reset speed>]");
1412         register_command(cmd_ctx, NULL, "jtag_device", handle_jtag_device_command,
1413                 COMMAND_CONFIG, "jtag_device <ir_length> <ir_expected> <ir_mask>");
1414         register_command(cmd_ctx, NULL, "reset_config", handle_reset_config_command,
1415                 COMMAND_CONFIG, NULL);
1416         register_command(cmd_ctx, NULL, "jtag_nsrst_delay", handle_jtag_nsrst_delay_command,
1417                 COMMAND_CONFIG, NULL);
1418         register_command(cmd_ctx, NULL, "jtag_ntrst_delay", handle_jtag_ntrst_delay_command,
1419                 COMMAND_CONFIG, NULL);
1420
1421         register_command(cmd_ctx, NULL, "scan_chain", handle_scan_chain_command,
1422                 COMMAND_EXEC, "print current scan chain configuration");
1423
1424         register_command(cmd_ctx, NULL, "endstate", handle_endstate_command,
1425                 COMMAND_EXEC, "finish JTAG operations in <tap_state>");
1426         register_command(cmd_ctx, NULL, "jtag_reset", handle_jtag_reset_command,
1427                 COMMAND_EXEC, "toggle reset lines <trst> <srst>");
1428         register_command(cmd_ctx, NULL, "runtest", handle_runtest_command,
1429                 COMMAND_EXEC, "move to Run-Test/Idle, and execute <num_cycles>");
1430         register_command(cmd_ctx, NULL, "statemove", handle_statemove_command,
1431                 COMMAND_EXEC, "move to current endstate or [tap_state]");
1432         register_command(cmd_ctx, NULL, "irscan", handle_irscan_command,
1433                 COMMAND_EXEC, "execute IR scan <device> <instr> [dev2] [instr2] ...");
1434         register_command(cmd_ctx, NULL, "drscan", handle_drscan_command,
1435                 COMMAND_EXEC, "execute DR scan <device> <var> [dev2] [var2] ...");
1436
1437         register_command(cmd_ctx, NULL, "verify_ircapture", handle_verify_ircapture_command,
1438                 COMMAND_ANY, "verify value captured during Capture-IR <enable|disable>");
1439         return ERROR_OK;
1440 }
1441
1442 int jtag_interface_init(struct command_context_s *cmd_ctx)
1443 {
1444         if (!jtag_interface)
1445         {
1446                 /* nothing was previously specified by "interface" command */
1447                 ERROR("JTAG interface has to be specified, see \"interface\" command");
1448                 return ERROR_JTAG_INVALID_INTERFACE;
1449         }
1450
1451         if (jtag_interface->init() != ERROR_OK)
1452                 return ERROR_JTAG_INIT_FAILED;
1453
1454         jtag = jtag_interface;
1455         return ERROR_OK;
1456 }
1457
1458 int jtag_init(struct command_context_s *cmd_ctx)
1459 {
1460         int validate_tries = 0;
1461         jtag_device_t *device;
1462
1463         DEBUG("-");
1464
1465         if (!jtag && jtag_interface_init(cmd_ctx) != ERROR_OK)
1466                 return ERROR_JTAG_INIT_FAILED;
1467
1468         device = jtag_devices;
1469         jtag_ir_scan_size = 0;
1470         jtag_num_devices = 0;
1471         while (device != NULL)
1472         {
1473                 jtag_ir_scan_size += device->ir_length;
1474                 jtag_num_devices++;
1475                 device = device->next;
1476         }
1477
1478         jtag_add_statemove(TAP_TLR);
1479         jtag_execute_queue();
1480
1481         /* examine chain first, as this could discover the real chain layout */
1482         if (jtag_examine_chain() != ERROR_OK)
1483         {
1484                 ERROR("trying to validate configured JTAG chain anyway...");
1485         }
1486
1487         while (jtag_validate_chain() != ERROR_OK)
1488         {
1489                 validate_tries++;
1490                 if (validate_tries > 5)
1491                 {
1492                         ERROR("Could not validate JTAG chain, exit");
1493                         return ERROR_JTAG_INVALID_INTERFACE;
1494                 }
1495                 usleep(10000);
1496         }
1497
1498         return ERROR_OK;
1499 }
1500
1501
1502 int handle_interface_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1503 {
1504         int i;
1505
1506         /* check whether the interface is already configured */
1507         if (jtag_interface)
1508         {
1509                 WARNING("Interface already configured, ignoring");
1510                 return ERROR_OK;
1511         }
1512
1513         /* interface name is a mandatory argument */
1514         if (argc < 1 || args[0][0] == '\0')
1515         {
1516                 return ERROR_COMMAND_SYNTAX_ERROR;
1517         }
1518
1519         for (i=0; jtag_interfaces[i]; i++)
1520         {
1521                 if (strcmp(args[0], jtag_interfaces[i]->name) == 0)
1522                 {
1523                         if (jtag_interfaces[i]->register_commands(cmd_ctx) != ERROR_OK)
1524                                 exit(-1);
1525
1526                         jtag_interface = jtag_interfaces[i];
1527                         return ERROR_OK;
1528                 }
1529         }
1530
1531         /* no valid interface was found (i.e. the configuration option,
1532          * didn't match one of the compiled-in interfaces
1533          */
1534         ERROR("No valid jtag interface found (%s)", args[0]);
1535         ERROR("compiled-in jtag interfaces:");
1536         for (i = 0; jtag_interfaces[i]; i++)
1537         {
1538                 ERROR("%i: %s", i, jtag_interfaces[i]->name);
1539         }
1540
1541         return ERROR_JTAG_INVALID_INTERFACE;
1542 }
1543
1544 int handle_jtag_device_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1545 {
1546         jtag_device_t **last_device_p = &jtag_devices;
1547
1548         if (*last_device_p)
1549         {
1550                 while ((*last_device_p)->next)
1551                         last_device_p = &((*last_device_p)->next);
1552                 last_device_p = &((*last_device_p)->next);
1553         }
1554
1555         if (argc < 3)
1556                 return ERROR_OK;
1557
1558         *last_device_p = malloc(sizeof(jtag_device_t));
1559         (*last_device_p)->ir_length = strtoul(args[0], NULL, 0);
1560
1561         (*last_device_p)->expected = malloc((*last_device_p)->ir_length);
1562         buf_set_u32((*last_device_p)->expected, 0, (*last_device_p)->ir_length, strtoul(args[1], NULL, 0));
1563         (*last_device_p)->expected_mask = malloc((*last_device_p)->ir_length);
1564         buf_set_u32((*last_device_p)->expected_mask, 0, (*last_device_p)->ir_length, strtoul(args[2], NULL, 0));
1565
1566         (*last_device_p)->cur_instr = malloc((*last_device_p)->ir_length);
1567         (*last_device_p)->bypass = 1;
1568         buf_set_ones((*last_device_p)->cur_instr, (*last_device_p)->ir_length);
1569
1570         (*last_device_p)->next = NULL;
1571
1572         jtag_register_event_callback(jtag_reset_callback, (*last_device_p));
1573
1574         jtag_num_devices++;
1575
1576         return ERROR_OK;
1577 }
1578
1579 int handle_scan_chain_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1580 {
1581         jtag_device_t *device = jtag_devices;
1582         int device_count = 0;
1583
1584         while (device)
1585         {
1586                 u32 expected, expected_mask, cur_instr;
1587                 expected = buf_get_u32(device->expected, 0, device->ir_length);
1588                 expected_mask = buf_get_u32(device->expected_mask, 0, device->ir_length);
1589                 cur_instr = buf_get_u32(device->cur_instr, 0, device->ir_length);
1590                 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);
1591                 device = device->next;
1592                 device_count++;
1593         }
1594
1595         return ERROR_OK;
1596 }
1597
1598 int handle_reset_config_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1599 {
1600         if (argc >= 1)
1601         {
1602                 if (strcmp(args[0], "none") == 0)
1603                         jtag_reset_config = RESET_NONE;
1604                 else if (strcmp(args[0], "trst_only") == 0)
1605                         jtag_reset_config = RESET_HAS_TRST;
1606                 else if (strcmp(args[0], "srst_only") == 0)
1607                         jtag_reset_config = RESET_HAS_SRST;
1608                 else if (strcmp(args[0], "trst_and_srst") == 0)
1609                         jtag_reset_config = RESET_TRST_AND_SRST;
1610                 else
1611                 {
1612                         ERROR("invalid reset_config argument, defaulting to none");
1613                         jtag_reset_config = RESET_NONE;
1614                         return ERROR_INVALID_ARGUMENTS;
1615                 }
1616         }
1617
1618         if (argc >= 2)
1619         {
1620                 if (strcmp(args[1], "srst_pulls_trst") == 0)
1621                         jtag_reset_config |= RESET_SRST_PULLS_TRST;
1622                 else if (strcmp(args[1], "trst_pulls_srst") == 0)
1623                         jtag_reset_config |= RESET_TRST_PULLS_SRST;
1624                 else if (strcmp(args[1], "combined") == 0)
1625                         jtag_reset_config |= RESET_SRST_PULLS_TRST | RESET_TRST_PULLS_SRST;
1626                 else if (strcmp(args[1], "separate") == 0)
1627                         jtag_reset_config &= ~(RESET_SRST_PULLS_TRST | RESET_TRST_PULLS_SRST);
1628                 else
1629                 {
1630                         ERROR("invalid reset_config argument, defaulting to none");
1631                         jtag_reset_config = RESET_NONE;
1632                         return ERROR_INVALID_ARGUMENTS;
1633                 }
1634         }
1635
1636         if (argc >= 3)
1637         {
1638                 if (strcmp(args[2], "trst_open_drain") == 0)
1639                         jtag_reset_config |= RESET_TRST_OPEN_DRAIN;
1640                 else if (strcmp(args[2], "trst_push_pull") == 0)
1641                         jtag_reset_config &= ~RESET_TRST_OPEN_DRAIN;
1642                 else
1643                 {
1644                         ERROR("invalid reset_config argument, defaulting to none");
1645                         jtag_reset_config = RESET_NONE;
1646                         return ERROR_INVALID_ARGUMENTS;
1647                 }
1648         }
1649
1650         if (argc >= 4)
1651         {
1652                 if (strcmp(args[3], "srst_push_pull") == 0)
1653                         jtag_reset_config |= RESET_SRST_PUSH_PULL;
1654                 else if (strcmp(args[3], "srst_open_drain") == 0)
1655                         jtag_reset_config &= ~RESET_SRST_PUSH_PULL;
1656                 else
1657                 {
1658                         ERROR("invalid reset_config argument, defaulting to none");
1659                         jtag_reset_config = RESET_NONE;
1660                         return ERROR_INVALID_ARGUMENTS;
1661                 }
1662         }
1663
1664         return ERROR_OK;
1665 }
1666
1667 int handle_jtag_nsrst_delay_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1668 {
1669         if (argc < 1)
1670         {
1671                 ERROR("jtag_nsrst_delay <ms> command takes one required argument");
1672                 exit(-1);
1673         }
1674         else
1675         {
1676                 jtag_nsrst_delay = strtoul(args[0], NULL, 0);
1677         }
1678
1679         return ERROR_OK;
1680 }
1681
1682 int handle_jtag_ntrst_delay_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1683 {
1684         if (argc < 1)
1685         {
1686                 ERROR("jtag_ntrst_delay <ms> command takes one required argument");
1687                 exit(-1);
1688         }
1689         else
1690         {
1691                 jtag_ntrst_delay = strtoul(args[0], NULL, 0);
1692         }
1693
1694         return ERROR_OK;
1695 }
1696
1697 int handle_jtag_speed_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1698 {
1699         int cur_speed = 0;
1700         if ((argc<1) || (argc>2))
1701                 return ERROR_COMMAND_SYNTAX_ERROR;
1702
1703         if (argc >= 1)
1704                 cur_speed = jtag_speed = jtag_speed_post_reset = strtoul(args[0], NULL, 0);
1705         if (argc == 2)
1706                 cur_speed = jtag_speed_post_reset = strtoul(args[1], NULL, 0);
1707
1708         /* this command can be called during CONFIG,
1709          * in which case jtag isn't initialized */
1710         if (jtag)
1711                 jtag->speed(cur_speed);
1712
1713         return ERROR_OK;
1714 }
1715
1716 int handle_endstate_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1717 {
1718         enum tap_state state;
1719
1720         if (argc < 1)
1721         {
1722                 return ERROR_COMMAND_SYNTAX_ERROR;
1723         }
1724         else
1725         {
1726                 for (state = 0; state < 16; state++)
1727                 {
1728                         if (strcmp(args[0], tap_state_strings[state]) == 0)
1729                         {
1730                                 jtag_add_end_state(state);
1731                                 jtag_execute_queue();
1732                         }
1733                 }
1734         }
1735         command_print(cmd_ctx, "current endstate: %s", tap_state_strings[end_state]);
1736
1737         return ERROR_OK;
1738 }
1739
1740 int handle_jtag_reset_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1741 {
1742         int trst = -1;
1743         int srst = -1;
1744
1745         if (argc < 2)
1746         {
1747                 return ERROR_COMMAND_SYNTAX_ERROR;
1748         }
1749
1750         if (args[0][0] == '1')
1751                 trst = 1;
1752         else if (args[0][0] == '0')
1753                 trst = 0;
1754         else
1755         {
1756                 return ERROR_COMMAND_SYNTAX_ERROR;
1757         }
1758
1759         if (args[1][0] == '1')
1760                 srst = 1;
1761         else if (args[1][0] == '0')
1762                 srst = 0;
1763         else
1764         {
1765                 return ERROR_COMMAND_SYNTAX_ERROR;
1766         }
1767
1768         if (!jtag && jtag_interface_init(cmd_ctx) != ERROR_OK)
1769                 return ERROR_JTAG_INIT_FAILED;
1770
1771         jtag_add_reset(trst, srst);
1772         jtag_execute_queue();
1773
1774         return ERROR_OK;
1775 }
1776
1777 int handle_runtest_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1778 {
1779         if (argc < 1)
1780         {
1781                 return ERROR_COMMAND_SYNTAX_ERROR;
1782         }
1783
1784         jtag_add_runtest(strtol(args[0], NULL, 0), -1);
1785         jtag_execute_queue();
1786
1787         return ERROR_OK;
1788
1789 }
1790
1791 int handle_statemove_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1792 {
1793         enum tap_state state;
1794
1795         state = -1;
1796         if (argc == 1)
1797         {
1798                 for (state = 0; state < 16; state++)
1799                 {
1800                         if (strcmp(args[0], tap_state_strings[state]) == 0)
1801                         {
1802                                 break;
1803                         }
1804                 }
1805         }
1806
1807         jtag_add_statemove(state);
1808         jtag_execute_queue();
1809
1810         return ERROR_OK;
1811
1812 }
1813
1814 int handle_irscan_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1815 {
1816         int i;
1817         scan_field_t *fields;
1818
1819         if ((argc < 2) || (argc % 2))
1820         {
1821                 return ERROR_COMMAND_SYNTAX_ERROR;
1822         }
1823
1824         fields = malloc(sizeof(scan_field_t) * argc / 2);
1825
1826         for (i = 0; i < argc / 2; i++)
1827         {
1828                 int device = strtoul(args[i*2], NULL, 0);
1829                 int field_size = jtag_get_device(device)->ir_length;
1830                 fields[i].device = device;
1831                 fields[i].out_value = malloc(CEIL(field_size, 8));
1832                 buf_set_u32(fields[i].out_value, 0, field_size, strtoul(args[i*2+1], NULL, 0));
1833                 fields[i].out_mask = NULL;
1834                 fields[i].in_value = NULL;
1835                 fields[i].in_check_mask = NULL;
1836                 fields[i].in_handler = NULL;
1837                 fields[i].in_handler_priv = NULL;
1838         }
1839
1840         jtag_add_ir_scan(argc / 2, fields, -1);
1841         jtag_execute_queue();
1842
1843         for (i = 0; i < argc / 2; i++)
1844                 free(fields[i].out_value);
1845
1846         free (fields);
1847
1848         return ERROR_OK;
1849 }
1850
1851 int handle_drscan_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1852 {
1853         scan_field_t *fields;
1854         int num_fields = 0;
1855         int field_count = 0;
1856         var_t *var;
1857         int i, j;
1858
1859         if ((argc < 2) || (argc % 2))
1860         {
1861                 return ERROR_COMMAND_SYNTAX_ERROR;
1862         }
1863
1864         for (i = 0; i < argc; i+=2)
1865         {
1866                 var = get_var_by_namenum(args[i+1]);
1867                 if (var)
1868                 {
1869                         num_fields += var->num_fields;
1870                 }
1871                 else
1872                 {
1873                         command_print(cmd_ctx, "variable %s doesn't exist", args[i+1]);
1874                         return ERROR_OK;
1875                 }
1876         }
1877
1878         fields = malloc(sizeof(scan_field_t) * num_fields);
1879
1880         for (i = 0; i < argc; i+=2)
1881         {
1882                 var = get_var_by_namenum(args[i+1]);
1883
1884                 for (j = 0; j < var->num_fields; j++)
1885                 {
1886                         fields[field_count].device = strtol(args[i], NULL, 0);
1887                         fields[field_count].num_bits = var->fields[j].num_bits;
1888                         fields[field_count].out_value = malloc(CEIL(var->fields[j].num_bits, 8));
1889                         buf_set_u32(fields[field_count].out_value, 0, var->fields[j].num_bits, var->fields[j].value);
1890                         fields[field_count].out_mask = NULL;
1891                         fields[field_count].in_value = fields[field_count].out_value;
1892                         fields[field_count].in_check_mask = NULL;
1893                         fields[field_count].in_check_value = NULL;
1894                         fields[field_count].in_handler = field_le_to_host;
1895                         fields[field_count++].in_handler_priv = &(var->fields[j]);
1896                 }
1897         }
1898
1899         jtag_add_dr_scan(num_fields, fields, -1);
1900         jtag_execute_queue();
1901
1902         for (i = 0; i < argc / 2; i++)
1903                 free(fields[i].out_value);
1904
1905         free(fields);
1906
1907         return ERROR_OK;
1908 }
1909
1910 int handle_verify_ircapture_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1911 {
1912         if (argc == 1)
1913         {
1914                 if (strcmp(args[0], "enable") == 0)
1915                 {
1916                         jtag_verify_capture_ir = 1;
1917                 }
1918                 else if (strcmp(args[0], "disable") == 0)
1919                 {
1920                         jtag_verify_capture_ir = 0;
1921                 } else
1922                 {
1923                         return ERROR_COMMAND_SYNTAX_ERROR;
1924                 }
1925         } else if (argc != 0)
1926         {
1927                 return ERROR_COMMAND_SYNTAX_ERROR;
1928         }
1929
1930         command_print(cmd_ctx, "verify Capture-IR is %s", (jtag_verify_capture_ir) ? "enabled": "disabled");
1931
1932         return ERROR_OK;
1933 }