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