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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  * SD->SD and SI->SI have to be caught in interface specific code
  63  */
  64 u8 tap_move[6][6] =
  65 {
  66 /*        TLR   RTI   SD    PD    SI    PI             */
  67         {0x7f, 0x00, 0x17, 0x0a, 0x1b, 0x16},   /* TLR */
  68         {0x7f, 0x00, 0x25, 0x05, 0x2b, 0x0b},   /* RTI */
  69         {0x7f, 0x31, 0x00, 0x01, 0x0f, 0x2f},   /* SD  */
  70         {0x7f, 0x30, 0x20, 0x17, 0x1e, 0x2f},   /* PD  */
  71         {0x7f, 0x31, 0x07, 0x17, 0x00, 0x01},   /* SI  */
  72         {0x7f, 0x30, 0x1c, 0x17, 0x20, 0x2f}    /* PI  */
  73 };
  74
  75 int tap_move_map[16] = {
  76         0, -1, -1,  2, -1,  3, -1, -1,
  77         1, -1, -1,  4, -1,  5, -1, -1
  78 };
  79
  80 tap_transition_t tap_transitions[16] =
  81 {
  82         {TAP_TLR, TAP_RTI},             /* TLR */
  83         {TAP_SIS, TAP_CD},              /* SDS */
  84         {TAP_E1D, TAP_SD},              /* CD  */
  85         {TAP_E1D, TAP_SD},              /* SD  */
  86         {TAP_UD,  TAP_PD},              /* E1D */
  87         {TAP_E2D, TAP_PD},              /* PD  */
  88         {TAP_UD,  TAP_SD},              /* E2D */
  89         {TAP_SDS, TAP_RTI},             /* UD  */
  90         {TAP_SDS, TAP_RTI},             /* RTI */
  91         {TAP_TLR, TAP_CI},              /* SIS */
  92         {TAP_E1I, TAP_SI},              /* CI  */
  93         {TAP_E1I, TAP_SI},              /* SI  */
  94         {TAP_UI,  TAP_PI},              /* E1I */
  95         {TAP_E2I, TAP_PI},              /* PI  */
  96         {TAP_UI,  TAP_SI},              /* E2I */
  97         {TAP_SDS, TAP_RTI}              /* UI  */
  98 };
  99
 100 char* jtag_event_strings[] =
 101 {
 102         "SRST asserted",
 103         "TRST asserted",
 104         "SRST released",
 105         "TRST released"
 106 };
 107
 108 enum tap_state end_state = TAP_TLR;
 109 enum tap_state cur_state = TAP_TLR;
 110 int jtag_trst = 0;
 111 int jtag_srst = 0;
 112
 113 jtag_command_t *jtag_command_queue = NULL;
 114 jtag_command_t **last_comand_pointer = &jtag_command_queue;
 115 jtag_device_t *jtag_devices = NULL;
 116 int jtag_num_devices = 0;
 117 int jtag_ir_scan_size = 0;
 118 enum reset_types jtag_reset_config = RESET_NONE;
 119 enum tap_state cmd_queue_end_state = TAP_TLR;
 120 enum tap_state cmd_queue_cur_state = TAP_TLR;
 121
 122 int jtag_verify_capture_ir = 1;
 123
 124 /* how long the OpenOCD should wait before attempting JTAG communication after reset lines deasserted (in ms) */
 125 int jtag_nsrst_delay = 0; /* default to no nSRST delay */
 126 int jtag_ntrst_delay = 0; /* default to no nTRST delay */
 127
 128 /* maximum number of JTAG devices expected in the chain
 129  */
 130 #define JTAG_MAX_CHAIN_SIZE 20
 131
 132 /* callbacks to inform high-level handlers about JTAG state changes */
 133 jtag_event_callback_t *jtag_event_callbacks;
 134
 135 /* jtag interfaces (parport, FTDI-USB, TI-USB, ...)
 136  */
 137 #if BUILD_PARPORT == 1
 138         extern jtag_interface_t parport_interface;
 139 #endif
 140
 141 #if BUILD_FT2232_FTD2XX == 1
 142         extern jtag_interface_t ft2232_interface;
 143 #endif
 144
 145 #if BUILD_FT2232_LIBFTDI == 1
 146         extern jtag_interface_t ft2232_interface;
 147 #endif
 148
 149 #if BUILD_AMTJTAGACCEL == 1
 150         extern jtag_interface_t amt_jtagaccel_interface;
 151 #endif
 152
 153 #if BUILD_EP93XX == 1
 154         extern jtag_interface_t ep93xx_interface;
 155 #endif
 156
 157 #if BUILD_AT91RM9200 == 1
 158         extern jtag_interface_t at91rm9200_interface;
 159 #endif
 160
 161 #if BUILD_GW16012 == 1
 162         extern jtag_interface_t gw16012_interface;
 163 #endif
 164
 165 #if BUILD_PRESTO_LIBFTDI == 1 || BUILD_PRESTO_FTD2XX == 1
 166         extern jtag_interface_t presto_interface;
 167 #endif
 168
 169 #if BUILD_USBPROG == 1
 170         extern jtag_interface_t usbprog_interface;
 171 #endif
 172
 173 jtag_interface_t *jtag_interfaces[] = {
 174 #if BUILD_PARPORT == 1
 175         &parport_interface,
 176 #endif
 177 #if BUILD_FT2232_FTD2XX == 1
 178         &ft2232_interface,
 179 #endif
 180 #if BUILD_FT2232_LIBFTDI == 1
 181         &ft2232_interface,
 182 #endif
 183 #if BUILD_AMTJTAGACCEL == 1
 184         &amt_jtagaccel_interface,
 185 #endif
 186 #if BUILD_EP93XX == 1
 187         &ep93xx_interface,
 188 #endif
 189 #if BUILD_AT91RM9200 == 1
 190         &at91rm9200_interface,
 191 #endif
 192 #if BUILD_GW16012 == 1
 193         &gw16012_interface,
 194 #endif
 195 #if BUILD_PRESTO_LIBFTDI == 1 || BUILD_PRESTO_FTD2XX == 1
 196         &presto_interface,
 197 #endif
 198 #if BUILD_USBPROG == 1
 199         &usbprog_interface,
 200 #endif
 201         NULL,
 202 };
 203
 204 jtag_interface_t *jtag = NULL;
 205
 206 /* configuration */
 207 char* jtag_interface = NULL;
 208 int jtag_speed = -1;
 209
 210
 211 /* forward declarations */
 212 int jtag_add_statemove(enum tap_state endstate);
 213 int jtag_add_pathmove(int num_states, enum tap_state *path);
 214 int jtag_add_runtest(int num_cycles, enum tap_state endstate);
 215 int jtag_add_reset(int trst, int srst);
 216 int jtag_add_end_state(enum tap_state endstate);
 217 int jtag_add_sleep(u32 us);
 218 int jtag_execute_queue(void);
 219 int jtag_cancel_queue(void);
 220
 221 /* jtag commands */
 222 int handle_interface_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 223 int handle_jtag_speed_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 224 int handle_jtag_device_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 225 int handle_reset_config_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 226 int handle_jtag_nsrst_delay_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 227 int handle_jtag_ntrst_delay_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 228
 229 int handle_scan_chain_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 230
 231 int handle_endstate_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 232 int handle_jtag_reset_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 233 int handle_runtest_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 234 int handle_statemove_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 235 int handle_irscan_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 236 int handle_drscan_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 237
 238 int handle_verify_ircapture_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 239
 240 int jtag_register_event_callback(int (*callback)(enum jtag_event event, void *priv), void *priv)
 241 {
 242         jtag_event_callback_t **callbacks_p = &jtag_event_callbacks;
 243
 244         if (callback == NULL)
 245         {
 246                 return ERROR_INVALID_ARGUMENTS;
 247         }
 248
 249         if (*callbacks_p)
 250         {
 251                 while ((*callbacks_p)->next)
 252                         callbacks_p = &((*callbacks_p)->next);
 253                 callbacks_p = &((*callbacks_p)->next);
 254         }
 255
 256         (*callbacks_p) = malloc(sizeof(jtag_event_callback_t));
 257         (*callbacks_p)->callback = callback;
 258         (*callbacks_p)->priv = priv;
 259         (*callbacks_p)->next = NULL;
 260
 261         return ERROR_OK;
 262 }
 263
 264 int jtag_unregister_event_callback(int (*callback)(enum jtag_event event, void *priv))
 265 {
 266         jtag_event_callback_t **callbacks_p = &jtag_event_callbacks;
 267
 268         if (callback == NULL)
 269         {
 270                 return ERROR_INVALID_ARGUMENTS;
 271         }
 272
 273         while (*callbacks_p)
 274         {
 275                 jtag_event_callback_t **next = &((*callbacks_p)->next);
 276                 if ((*callbacks_p)->callback == callback)
 277                 {
 278                         free(*callbacks_p);
 279                         *callbacks_p = *next;
 280                 }
 281                 callbacks_p = next;
 282         }
 283
 284         return ERROR_OK;
 285 }
 286
 287 int jtag_call_event_callbacks(enum jtag_event event)
 288 {
 289         jtag_event_callback_t *callback = jtag_event_callbacks;
 290
 291         DEBUG("jtag event: %s", jtag_event_strings[event]);
 292
 293         while (callback)
 294         {
 295                 callback->callback(event, callback->priv);
 296                 callback = callback->next;
 297         }
 298
 299         return ERROR_OK;
 300 }
 301
 302 /* returns a pointer to the pointer of the last command in queue
 303  * this may be a pointer to the root pointer (jtag_command_queue)
 304  * or to the next member of the last but one command
 305  */
 306 jtag_command_t** jtag_get_last_command_p(void)
 307 {
 308 /*      jtag_command_t *cmd = jtag_command_queue;
 309
 310         if (cmd)
 311                 while (cmd->next)
 312                         cmd = cmd->next;
 313         else
 314                 return &jtag_command_queue;
 315
 316         return &cmd->next;*/
 317
 318         return last_comand_pointer;
 319 }
 320
 321 /* returns a pointer to the n-th device in the scan chain */
 322 jtag_device_t* jtag_get_device(int num)
 323 {
 324         jtag_device_t *device = jtag_devices;
 325         int i = 0;
 326
 327         while (device)
 328         {
 329                 if (num == i)
 330                         return device;
 331                 device = device->next;
 332                 i++;
 333         }
 334
 335         return NULL;
 336 }
 337
 338 void* cmd_queue_alloc(size_t size)
 339 {
 340         cmd_queue_page_t **p_page = &cmd_queue_pages;
 341         int offset;
 342
 343         if (*p_page)
 344         {
 345                 while ((*p_page)->next)
 346                         p_page = &((*p_page)->next);
 347                 if (CMD_QUEUE_PAGE_SIZE - (*p_page)->used < size)
 348                         p_page = &((*p_page)->next);
 349         }
 350
 351         if (!*p_page)
 352         {
 353                 *p_page = malloc(sizeof(cmd_queue_page_t));
 354                 (*p_page)->used = 0;
 355                 (*p_page)->address = malloc(CMD_QUEUE_PAGE_SIZE);
 356                 (*p_page)->next = NULL;
 357         }
 358
 359         offset = (*p_page)->used;
 360         (*p_page)->used += size;
 361
 362         return ((*p_page)->address) + offset;
 363 }
 364
 365 void cmd_queue_free()
 366 {
 367         cmd_queue_page_t *page = cmd_queue_pages;
 368
 369         while (page)
 370         {
 371                 cmd_queue_page_t *last = page;
 372                 free(page->address);
 373                 page = page->next;
 374                 free(last);
 375         }
 376
 377         cmd_queue_pages = NULL;
 378 }
 379
 380 int jtag_add_ir_scan(int num_fields, scan_field_t *fields, enum tap_state state, void *dummy_anachronism)
 381 {
 382         jtag_command_t **last_cmd;
 383         jtag_device_t *device;
 384         int i, j;
 385         int scan_size = 0;
 386
 387         if (jtag_trst == 1)
 388         {
 389                 WARNING("JTAG command queued, while TRST is low (TAP in reset)");
 390                 return ERROR_JTAG_TRST_ASSERTED;
 391         }
 392
 393         last_cmd = jtag_get_last_command_p();
 394
 395         /* allocate memory for a new list member */
 396         *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
 397         (*last_cmd)->next = NULL;
 398         last_comand_pointer = &((*last_cmd)->next);
 399         (*last_cmd)->type = JTAG_SCAN;
 400
 401         /* allocate memory for ir scan command */
 402         (*last_cmd)->cmd.scan = cmd_queue_alloc(sizeof(scan_command_t));
 403         (*last_cmd)->cmd.scan->ir_scan = 1;
 404         (*last_cmd)->cmd.scan->num_fields = jtag_num_devices;   /* one field per device */
 405         (*last_cmd)->cmd.scan->fields = cmd_queue_alloc(jtag_num_devices * sizeof(scan_field_t));
 406         (*last_cmd)->cmd.scan->end_state = state;
 407
 408         if (state != -1)
 409                 cmd_queue_end_state = state;
 410
 411         if (cmd_queue_cur_state == TAP_TLR && cmd_queue_end_state != TAP_TLR)
 412                 jtag_call_event_callbacks(JTAG_TRST_RELEASED);
 413
 414         if (cmd_queue_end_state == TAP_TLR)
 415                 jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
 416
 417         cmd_queue_cur_state = cmd_queue_end_state;
 418
 419         for (i = 0; i < jtag_num_devices; i++)
 420         {
 421                 int found = 0;
 422                 device = jtag_get_device(i);
 423                 scan_size = device->ir_length;
 424                 (*last_cmd)->cmd.scan->fields[i].device = i;
 425                 (*last_cmd)->cmd.scan->fields[i].num_bits = scan_size;
 426                 (*last_cmd)->cmd.scan->fields[i].in_value = NULL;
 427                 (*last_cmd)->cmd.scan->fields[i].in_handler = NULL;
 428                 (*last_cmd)->cmd.scan->fields[i].in_handler_priv = NULL;
 429                 if (jtag_verify_capture_ir)
 430                 {
 431                         jtag_set_check_value((*last_cmd)->cmd.scan->fields+i, device->expected, device->expected_mask, NULL);
 432                 }
 433
 434                 /* search the list */
 435                 for (j = 0; j < num_fields; j++)
 436                 {
 437                         if (i == fields[j].device)
 438                         {
 439                                 found = 1;
 440                                 (*last_cmd)->cmd.scan->fields[i].out_value = buf_cpy(fields[j].out_value, cmd_queue_alloc(CEIL(scan_size, 8)), scan_size);
 441                                 (*last_cmd)->cmd.scan->fields[i].out_mask = buf_cpy(fields[j].out_mask, cmd_queue_alloc(CEIL(scan_size, 8)), scan_size);
 442
 443                                 device->bypass = 0;
 444                                 break;
 445                         }
 446                 }
 447
 448                 if (!found)
 449                 {
 450                         /* if a device isn't listed, set it to BYPASS */
 451                         (*last_cmd)->cmd.scan->fields[i].out_value = buf_set_ones(cmd_queue_alloc(CEIL(scan_size, 8)), scan_size);
 452                         (*last_cmd)->cmd.scan->fields[i].out_mask = NULL;
 453                         device->bypass = 1;
 454
 455                 }
 456
 457                 /* update device information */
 458                 buf_cpy((*last_cmd)->cmd.scan->fields[i].out_value, jtag_get_device(i)->cur_instr, scan_size);
 459         }
 460
 461         return ERROR_OK;
 462 }
 463
 464 int jtag_add_plain_ir_scan(int num_fields, scan_field_t *fields, enum tap_state state, void *dummy_anachronism)
 465 {
 466         jtag_command_t **last_cmd;
 467         int i;
 468
 469         if (jtag_trst == 1)
 470         {
 471                 WARNING("JTAG command queued, while TRST is low (TAP in reset)");
 472                 return ERROR_JTAG_TRST_ASSERTED;
 473         }
 474
 475         last_cmd = jtag_get_last_command_p();
 476
 477         /* allocate memory for a new list member */
 478         *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
 479         (*last_cmd)->next = NULL;
 480         last_comand_pointer = &((*last_cmd)->next);
 481         (*last_cmd)->type = JTAG_SCAN;
 482
 483         /* allocate memory for ir scan command */
 484         (*last_cmd)->cmd.scan = cmd_queue_alloc(sizeof(scan_command_t));
 485         (*last_cmd)->cmd.scan->ir_scan = 1;
 486         (*last_cmd)->cmd.scan->num_fields = num_fields;
 487         (*last_cmd)->cmd.scan->fields = cmd_queue_alloc(num_fields * sizeof(scan_field_t));
 488         (*last_cmd)->cmd.scan->end_state = state;
 489
 490         if (state != -1)
 491                 cmd_queue_end_state = state;
 492
 493         if (cmd_queue_cur_state == TAP_TLR && cmd_queue_end_state != TAP_TLR)
 494                 jtag_call_event_callbacks(JTAG_TRST_RELEASED);
 495
 496         if (cmd_queue_end_state == TAP_TLR)
 497                 jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
 498
 499         cmd_queue_cur_state = cmd_queue_end_state;
 500
 501         for (i = 0; i < num_fields; i++)
 502         {
 503                 int num_bits = fields[i].num_bits;
 504                 int num_bytes = CEIL(fields[i].num_bits, 8);
 505                 (*last_cmd)->cmd.scan->fields[i].device = fields[i].device;
 506                 (*last_cmd)->cmd.scan->fields[i].num_bits = num_bits;
 507                 (*last_cmd)->cmd.scan->fields[i].out_value = buf_cpy(fields[i].out_value, cmd_queue_alloc(num_bytes), num_bits);
 508                 (*last_cmd)->cmd.scan->fields[i].out_mask = buf_cpy(fields[i].out_mask, cmd_queue_alloc(num_bytes), num_bits);
 509                 (*last_cmd)->cmd.scan->fields[i].in_value = fields[i].in_value;
 510                 (*last_cmd)->cmd.scan->fields[i].in_check_value = fields[i].in_check_value;
 511                 (*last_cmd)->cmd.scan->fields[i].in_check_mask = fields[i].in_check_mask;
 512                 (*last_cmd)->cmd.scan->fields[i].in_handler = NULL;
 513                 (*last_cmd)->cmd.scan->fields[i].in_handler_priv = NULL;
 514         }
 515         return ERROR_OK;
 516 }
 517
 518 int jtag_add_dr_scan(int num_fields, scan_field_t *fields, enum tap_state state, void *dummy_anachronism)
 519 {
 520         int i, j;
 521         int bypass_devices = 0;
 522         int field_count = 0;
 523         jtag_command_t **last_cmd = jtag_get_last_command_p();
 524         jtag_device_t *device = jtag_devices;
 525         int scan_size;
 526
 527         if (jtag_trst == 1)
 528         {
 529                 WARNING("JTAG command queued, while TRST is low (TAP in reset)");
 530                 return ERROR_JTAG_TRST_ASSERTED;
 531         }
 532
 533         /* count devices in bypass */
 534         while (device)
 535         {
 536                 if (device->bypass)
 537                         bypass_devices++;
 538                 device = device->next;
 539         }
 540
 541         /* allocate memory for a new list member */
 542         *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
 543         last_comand_pointer = &((*last_cmd)->next);
 544         (*last_cmd)->next = NULL;
 545         (*last_cmd)->type = JTAG_SCAN;
 546
 547         /* allocate memory for dr scan command */
 548         (*last_cmd)->cmd.scan = cmd_queue_alloc(sizeof(scan_command_t));
 549         (*last_cmd)->cmd.scan->ir_scan = 0;
 550         (*last_cmd)->cmd.scan->num_fields = num_fields + bypass_devices;
 551         (*last_cmd)->cmd.scan->fields = cmd_queue_alloc((num_fields + bypass_devices) * sizeof(scan_field_t));
 552         (*last_cmd)->cmd.scan->end_state = state;
 553
 554         if (state != -1)
 555                 cmd_queue_end_state = state;
 556
 557         if (cmd_queue_cur_state == TAP_TLR && cmd_queue_end_state != TAP_TLR)
 558                 jtag_call_event_callbacks(JTAG_TRST_RELEASED);
 559
 560         if (cmd_queue_end_state == TAP_TLR)
 561                 jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
 562
 563         cmd_queue_cur_state = cmd_queue_end_state;
 564
 565         for (i = 0; i < jtag_num_devices; i++)
 566         {
 567                 int found = 0;
 568                 (*last_cmd)->cmd.scan->fields[field_count].device = i;
 569
 570                 for (j = 0; j < num_fields; j++)
 571                 {
 572                         if (i == fields[j].device)
 573                         {
 574                                 found = 1;
 575                                 scan_size = fields[j].num_bits;
 576                                 (*last_cmd)->cmd.scan->fields[field_count].num_bits = scan_size;
 577                                 (*last_cmd)->cmd.scan->fields[field_count].out_value = buf_cpy(fields[j].out_value, cmd_queue_alloc(CEIL(scan_size, 8)), scan_size);
 578                                 (*last_cmd)->cmd.scan->fields[field_count].out_mask = buf_cpy(fields[j].out_mask, cmd_queue_alloc(CEIL(scan_size, 8)), scan_size);
 579                                 (*last_cmd)->cmd.scan->fields[field_count].in_value = fields[j].in_value;
 580                                 (*last_cmd)->cmd.scan->fields[field_count].in_check_value = fields[j].in_check_value;
 581                                 (*last_cmd)->cmd.scan->fields[field_count].in_check_mask = fields[j].in_check_mask;
 582                                 (*last_cmd)->cmd.scan->fields[field_count].in_handler = fields[j].in_handler;
 583                                 (*last_cmd)->cmd.scan->fields[field_count++].in_handler_priv = fields[j].in_handler_priv;
 584                         }
 585                 }
 586                 if (!found)
 587                 {
 588                         /* if a device isn't listed, the BYPASS register should be selected */
 589                         if (!jtag_get_device(i)->bypass)
 590                         {
 591                                 ERROR("BUG: no scan data for a device not in BYPASS");
 592                                 exit(-1);
 593                         }
 594
 595                         /* program the scan field to 1 bit length, and ignore it's value */
 596                         (*last_cmd)->cmd.scan->fields[field_count].num_bits = 1;
 597                         (*last_cmd)->cmd.scan->fields[field_count].out_value = NULL;
 598                         (*last_cmd)->cmd.scan->fields[field_count].out_mask = NULL;
 599                         (*last_cmd)->cmd.scan->fields[field_count].in_value = NULL;
 600                         (*last_cmd)->cmd.scan->fields[field_count].in_check_value = NULL;
 601                         (*last_cmd)->cmd.scan->fields[field_count].in_check_mask = NULL;
 602                         (*last_cmd)->cmd.scan->fields[field_count].in_handler = NULL;
 603                         (*last_cmd)->cmd.scan->fields[field_count++].in_handler_priv = NULL;
 604                 }
 605                 else
 606                 {
 607                         /* if a device is listed, the BYPASS register must not be selected */
 608                         if (jtag_get_device(i)->bypass)
 609                         {
 610                                 WARNING("scan data for a device in BYPASS");
 611                         }
 612                 }
 613         }
 614         return ERROR_OK;
 615 }
 616
 617 int jtag_add_plain_dr_scan(int num_fields, scan_field_t *fields, enum tap_state state, void *dummy_anachronism)
 618 {
 619         int i;
 620         jtag_command_t **last_cmd = jtag_get_last_command_p();
 621
 622         if (jtag_trst == 1)
 623         {
 624                 WARNING("JTAG command queued, while TRST is low (TAP in reset)");
 625                 return ERROR_JTAG_TRST_ASSERTED;
 626         }
 627
 628         /* allocate memory for a new list member */
 629         *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
 630         last_comand_pointer = &((*last_cmd)->next);
 631         (*last_cmd)->next = NULL;
 632         (*last_cmd)->type = JTAG_SCAN;
 633
 634         /* allocate memory for scan command */
 635         (*last_cmd)->cmd.scan = cmd_queue_alloc(sizeof(scan_command_t));
 636         (*last_cmd)->cmd.scan->ir_scan = 0;
 637         (*last_cmd)->cmd.scan->num_fields = num_fields;
 638         (*last_cmd)->cmd.scan->fields = cmd_queue_alloc(num_fields * sizeof(scan_field_t));
 639         (*last_cmd)->cmd.scan->end_state = state;
 640
 641         if (state != -1)
 642                 cmd_queue_end_state = state;
 643
 644         if (cmd_queue_cur_state == TAP_TLR && cmd_queue_end_state != TAP_TLR)
 645                 jtag_call_event_callbacks(JTAG_TRST_RELEASED);
 646
 647         if (cmd_queue_end_state == TAP_TLR)
 648                 jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
 649
 650         cmd_queue_cur_state = cmd_queue_end_state;
 651
 652         for (i = 0; i < num_fields; i++)
 653         {
 654                 int num_bits = fields[i].num_bits;
 655                 int num_bytes = CEIL(fields[i].num_bits, 8);
 656                 (*last_cmd)->cmd.scan->fields[i].device = fields[i].device;
 657                 (*last_cmd)->cmd.scan->fields[i].num_bits = num_bits;
 658                 (*last_cmd)->cmd.scan->fields[i].out_value = buf_cpy(fields[i].out_value, cmd_queue_alloc(num_bytes), num_bits);
 659                 (*last_cmd)->cmd.scan->fields[i].out_mask = buf_cpy(fields[i].out_mask, cmd_queue_alloc(num_bytes), num_bits);
 660                 (*last_cmd)->cmd.scan->fields[i].in_value = fields[i].in_value;
 661                 (*last_cmd)->cmd.scan->fields[i].in_check_value = fields[i].in_check_value;
 662                 (*last_cmd)->cmd.scan->fields[i].in_check_mask = fields[i].in_check_mask;
 663                 (*last_cmd)->cmd.scan->fields[i].in_handler = fields[i].in_handler;
 664                 (*last_cmd)->cmd.scan->fields[i].in_handler_priv = fields[i].in_handler_priv;
 665         }
 666
 667         return ERROR_OK;
 668 }
 669 int jtag_add_statemove(enum tap_state state)
 670 {
 671         jtag_command_t **last_cmd = jtag_get_last_command_p();
 672
 673         if (jtag_trst == 1)
 674         {
 675                 WARNING("JTAG command queued, while TRST is low (TAP in reset)");
 676                 return ERROR_JTAG_TRST_ASSERTED;
 677         }
 678
 679         /* allocate memory for a new list member */
 680         *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
 681         last_comand_pointer = &((*last_cmd)->next);
 682         (*last_cmd)->next = NULL;
 683         (*last_cmd)->type = JTAG_STATEMOVE;
 684
 685         (*last_cmd)->cmd.statemove = cmd_queue_alloc(sizeof(statemove_command_t));
 686         (*last_cmd)->cmd.statemove->end_state = state;
 687
 688         if (state != -1)
 689                 cmd_queue_end_state = state;
 690
 691         if (cmd_queue_cur_state == TAP_TLR && cmd_queue_end_state != TAP_TLR)
 692                 jtag_call_event_callbacks(JTAG_TRST_RELEASED);
 693
 694         if (cmd_queue_end_state == TAP_TLR)
 695                 jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
 696
 697         cmd_queue_cur_state = cmd_queue_end_state;
 698
 699         return ERROR_OK;
 700 }
 701
 702 int jtag_add_pathmove(int num_states, enum tap_state *path)
 703 {
 704         jtag_command_t **last_cmd = jtag_get_last_command_p();
 705         int i;
 706
 707         if (jtag_trst == 1)
 708         {
 709                 WARNING("JTAG command queued, while TRST is low (TAP in reset)");
 710                 return ERROR_JTAG_TRST_ASSERTED;
 711         }
 712
 713         /* the last state has to be a stable state */
 714         if (tap_move_map[path[num_states - 1]] == -1)
 715         {
 716                 ERROR("TAP path doesn't finish in a stable state");
 717                 return ERROR_JTAG_NOT_IMPLEMENTED;
 718         }
 719
 720         if (jtag->support_pathmove)
 721         {
 722                 /* allocate memory for a new list member */
 723                 *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
 724                 last_comand_pointer = &((*last_cmd)->next);
 725                 (*last_cmd)->next = NULL;
 726                 (*last_cmd)->type = JTAG_PATHMOVE;
 727
 728                 (*last_cmd)->cmd.pathmove = cmd_queue_alloc(sizeof(pathmove_command_t));
 729                 (*last_cmd)->cmd.pathmove->num_states = num_states;
 730                 (*last_cmd)->cmd.pathmove->path = cmd_queue_alloc(sizeof(enum tap_state) * num_states);
 731
 732                 for (i = 0; i < num_states; i++)
 733                         (*last_cmd)->cmd.pathmove->path[i] = path[i];
 734         }
 735         else
 736         {
 737                 /* validate the desired path, and see if it fits a default path */
 738                 int begin = 0;
 739                 int end = 0;
 740                 int j;
 741
 742                 for (i = 0; i < num_states; i++)
 743                 {
 744                         for (j = i; j < num_states; j++)
 745                         {
 746                                 if (tap_move_map[path[j]] != -1)
 747                                 {
 748                                         end = j;
 749                                         break;
 750                                 }
 751                         }
 752
 753                         if (begin - end <= 7)   /* a default path spans no more than 7 states */
 754                         {
 755                                 jtag_add_statemove(path[end]);
 756                         }
 757                         else
 758                         {
 759                                 ERROR("encountered a TAP path that can't be fulfilled by default paths");
 760                                 return ERROR_JTAG_NOT_IMPLEMENTED;
 761                         }
 762
 763                         i = end;
 764                 }
 765         }
 766
 767         if (cmd_queue_cur_state == TAP_TLR && cmd_queue_end_state != TAP_TLR)
 768                 jtag_call_event_callbacks(JTAG_TRST_RELEASED);
 769
 770         if (cmd_queue_end_state == TAP_TLR)
 771                 jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
 772
 773         cmd_queue_cur_state = path[num_states - 1];
 774
 775         return ERROR_OK;
 776 }
 777
 778 int jtag_add_runtest(int num_cycles, enum tap_state state)
 779 {
 780         jtag_command_t **last_cmd = jtag_get_last_command_p();
 781
 782         if (jtag_trst == 1)
 783         {
 784                 WARNING("JTAG command queued, while TRST is low (TAP in reset)");
 785                 return ERROR_JTAG_TRST_ASSERTED;
 786         }
 787
 788         /* allocate memory for a new list member */
 789         *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
 790         (*last_cmd)->next = NULL;
 791         last_comand_pointer = &((*last_cmd)->next);
 792         (*last_cmd)->type = JTAG_RUNTEST;
 793
 794         (*last_cmd)->cmd.runtest = cmd_queue_alloc(sizeof(runtest_command_t));
 795         (*last_cmd)->cmd.runtest->num_cycles = num_cycles;
 796         (*last_cmd)->cmd.runtest->end_state = state;
 797
 798         if (state != -1)
 799                 cmd_queue_end_state = state;
 800
 801         if (cmd_queue_cur_state == TAP_TLR && cmd_queue_end_state != TAP_TLR)
 802                 jtag_call_event_callbacks(JTAG_TRST_RELEASED);
 803
 804         if (cmd_queue_end_state == TAP_TLR)
 805                 jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
 806
 807         cmd_queue_cur_state = cmd_queue_end_state;
 808
 809         return ERROR_OK;
 810 }
 811
 812 int jtag_add_reset(int req_trst, int req_srst)
 813 {
 814         int trst_with_tms = 0;
 815
 816         jtag_command_t **last_cmd = jtag_get_last_command_p();
 817
 818         if (req_trst == -1)
 819                 req_trst = jtag_trst;
 820
 821         if (req_srst == -1)
 822                 req_srst = jtag_srst;
 823
 824         /* Make sure that jtag_reset_config allows the requested reset */
 825         /* if SRST pulls TRST, we can't fulfill srst == 1 with trst == 0 */
 826         if (((jtag_reset_config & RESET_SRST_PULLS_TRST) && (req_srst == 1)) && (req_trst == 0))
 827                 return ERROR_JTAG_RESET_WOULD_ASSERT_TRST;
 828
 829         /* if TRST pulls SRST, we reset with TAP T-L-R */
 830         if (((jtag_reset_config & RESET_TRST_PULLS_SRST) && (req_trst == 1)) && (req_srst == 0))
 831         {
 832                 req_trst = 0;
 833                 trst_with_tms = 1;
 834         }
 835
 836         if (req_srst && !(jtag_reset_config & RESET_HAS_SRST))
 837         {
 838                 ERROR("requested nSRST assertion, but the current configuration doesn't support this");
 839                 return ERROR_JTAG_RESET_CANT_SRST;
 840         }
 841
 842         if (req_trst && !(jtag_reset_config & RESET_HAS_TRST))
 843         {
 844                 req_trst = 0;
 845                 trst_with_tms = 1;
 846         }
 847
 848         /* allocate memory for a new list member */
 849         *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
 850         (*last_cmd)->next = NULL;
 851         last_comand_pointer = &((*last_cmd)->next);
 852         (*last_cmd)->type = JTAG_RESET;
 853
 854         (*last_cmd)->cmd.reset = cmd_queue_alloc(sizeof(reset_command_t));
 855         (*last_cmd)->cmd.reset->trst = req_trst;
 856         (*last_cmd)->cmd.reset->srst = req_srst;
 857
 858         jtag_trst = req_trst;
 859         jtag_srst = req_srst;
 860
 861         if (jtag_srst)
 862         {
 863                 jtag_call_event_callbacks(JTAG_SRST_ASSERTED);
 864         }
 865         else
 866         {
 867                 jtag_call_event_callbacks(JTAG_SRST_RELEASED);
 868                 if (jtag_nsrst_delay)
 869                         jtag_add_sleep(jtag_nsrst_delay * 1000);
 870         }
 871
 872         if (trst_with_tms)
 873         {
 874                 last_cmd = &((*last_cmd)->next);
 875
 876                 /* allocate memory for a new list member */
 877                 *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
 878                 (*last_cmd)->next = NULL;
 879                 last_comand_pointer = &((*last_cmd)->next);
 880                 (*last_cmd)->type = JTAG_STATEMOVE;
 881
 882                 (*last_cmd)->cmd.statemove = cmd_queue_alloc(sizeof(statemove_command_t));
 883                 (*last_cmd)->cmd.statemove->end_state = TAP_TLR;
 884
 885                 jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
 886                 cmd_queue_cur_state = TAP_TLR;
 887                 cmd_queue_end_state = TAP_TLR;
 888
 889                 return ERROR_OK;
 890         }
 891         else
 892         {
 893                 if (jtag_trst)
 894                 {
 895                         /* we just asserted nTRST, so we're now in Test-Logic-Reset,
 896                          * and inform possible listeners about this
 897                          */
 898                         cmd_queue_cur_state = TAP_TLR;
 899                         jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
 900                 }
 901                 else
 902                 {
 903                         /* the nTRST line got deasserted, so we're still in Test-Logic-Reset,
 904                          * but we might want to add a delay to give the TAP time to settle
 905                          */
 906                         if (jtag_ntrst_delay)
 907                                 jtag_add_sleep(jtag_ntrst_delay * 1000);
 908                 }
 909         }
 910
 911         return ERROR_OK;
 912 }
 913
 914 int jtag_add_end_state(enum tap_state state)
 915 {
 916         jtag_command_t **last_cmd = jtag_get_last_command_p();
 917
 918         /* allocate memory for a new list member */
 919         *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
 920         (*last_cmd)->next = NULL;
 921         last_comand_pointer = &((*last_cmd)->next);
 922         (*last_cmd)->type = JTAG_END_STATE;
 923
 924         (*last_cmd)->cmd.end_state = cmd_queue_alloc(sizeof(end_state_command_t));
 925         (*last_cmd)->cmd.end_state->end_state = state;
 926
 927         if (state != -1)
 928                 cmd_queue_end_state = state;
 929
 930         return ERROR_OK;
 931 }
 932
 933 int jtag_add_sleep(u32 us)
 934 {
 935         jtag_command_t **last_cmd = jtag_get_last_command_p();
 936
 937         /* allocate memory for a new list member */
 938         *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
 939         (*last_cmd)->next = NULL;
 940         last_comand_pointer = &((*last_cmd)->next);
 941         (*last_cmd)->type = JTAG_SLEEP;
 942
 943         (*last_cmd)->cmd.sleep = cmd_queue_alloc(sizeof(sleep_command_t));
 944         (*last_cmd)->cmd.sleep->us = us;
 945
 946         return ERROR_OK;
 947 }
 948
 949 int jtag_scan_size(scan_command_t *cmd)
 950 {
 951         int bit_count = 0;
 952         int i;
 953
 954         /* count bits in scan command */
 955         for (i = 0; i < cmd->num_fields; i++)
 956         {
 957                 bit_count += cmd->fields[i].num_bits;
 958         }
 959
 960         return bit_count;
 961 }
 962
 963 int jtag_build_buffer(scan_command_t *cmd, u8 **buffer)
 964 {
 965         int bit_count = 0;
 966         int i;
 967
 968         bit_count = jtag_scan_size(cmd);
 969         *buffer = malloc(CEIL(bit_count, 8));
 970
 971         bit_count = 0;
 972
 973         for (i = 0; i < cmd->num_fields; i++)
 974         {
 975                 if (cmd->fields[i].out_value)
 976                 {
 977 #ifdef _DEBUG_JTAG_IO_
 978                         char* char_buf = buf_to_str(cmd->fields[i].out_value, (cmd->fields[i].num_bits > 64) ? 64 : cmd->fields[i].num_bits, 16);
 979 #endif
 980                         buf_set_buf(cmd->fields[i].out_value, 0, *buffer, bit_count, cmd->fields[i].num_bits);
 981 #ifdef _DEBUG_JTAG_IO_
 982                         DEBUG("fields[%i].out_value: 0x%s", i, char_buf);
 983                         free(char_buf);
 984 #endif
 985                 }
 986
 987                 bit_count += cmd->fields[i].num_bits;
 988         }
 989
 990         return bit_count;
 991
 992 }
 993
 994 extern int jtag_check_value(u8 *captured, void *priv);
 995
 996 int jtag_read_buffer(u8 *buffer, scan_command_t *cmd)
 997 {
 998         int i;
 999         int bit_count = 0;
1000         int retval;
1001
1002         /* we return ERROR_OK, unless a check fails, or a handler reports a problem */
1003         retval = ERROR_OK;
1004
1005         for (i = 0; i < cmd->num_fields; i++)
1006         {
1007                 /* if neither in_value nor in_handler
1008                  * are specified we don't have to examine this field
1009                  */
1010                 if (cmd->fields[i].in_value || cmd->fields[i].in_handler)
1011                 {
1012                         int num_bits = cmd->fields[i].num_bits;
1013                         u8 *captured = buf_set_buf(buffer, bit_count, malloc(CEIL(num_bits, 8)), 0, num_bits);
1014
1015 #ifdef _DEBUG_JTAG_IO_
1016                         char *char_buf;
1017
1018                         char_buf = buf_to_str(captured, (num_bits > 64) ? 64 : num_bits, 16);
1019                         DEBUG("fields[%i].in_value: 0x%s", i, char_buf);
1020                         free(char_buf);
1021 #endif
1022
1023                         void *priv = cmd->fields[i].in_handler_priv;
1024                         if (cmd->fields[i].in_handler == &jtag_check_value)
1025                         {
1026                                 /* Yuk! we want to pass in the pointer to cmd->fields[i] which is not known
1027                                  * when jtag_check_value is invoked
1028                                  *
1029                                  * Not pretty, but this is part of synthesizing check_mask via in_handler
1030                                  * with a minimum of code impact.
1031                                  *
1032                                  * A cleaner change would be to modify the in_handler to always take field
1033                                  * as an argument. Perhaps later...
1034                                  *
1035                                  * Change in_handler to be varargs and have fields+i as the first vararg?
1036                                  *
1037                                  */
1038                                 priv = cmd->fields + i;
1039                         }
1040                         if (cmd->fields[i].in_value)
1041                         {
1042                                 buf_cpy(captured, cmd->fields[i].in_value, num_bits);
1043
1044                                 if (cmd->fields[i].in_handler)
1045                                 {
1046                                         if (cmd->fields[i].in_handler(cmd->fields[i].in_value, priv) != ERROR_OK)
1047                                         {
1048                                                 WARNING("in_handler reported a failed check");
1049                                                 retval = ERROR_JTAG_QUEUE_FAILED;
1050                                         }
1051                                 }
1052                         }
1053
1054                         /* no in_value specified, but a handler takes care of the scanned data */
1055                         if (cmd->fields[i].in_handler && (!cmd->fields[i].in_value))
1056                         {
1057                                 if (cmd->fields[i].in_handler(captured, priv) != ERROR_OK)
1058                                 {
1059                                         /* We're going to call the error:handler later, but if the in_handler
1060                                          * reported an error we report this failure upstream
1061                                          */
1062                                         WARNING("in_handler reported a failed check");
1063                                         retval = ERROR_JTAG_QUEUE_FAILED;
1064                                 }
1065                         }
1066
1067                         free(captured);
1068                 }
1069                 bit_count += cmd->fields[i].num_bits;
1070         }
1071
1072         return retval;
1073 }
1074
1075 int jtag_check_value(u8 *captured, void *priv)
1076 {
1077         int retval = ERROR_OK;
1078         scan_field_t *field=(scan_field_t *)priv;
1079         int num_bits = field->num_bits;
1080
1081         int compare_failed = 0;
1082
1083         if (field->in_check_mask)
1084                 compare_failed = buf_cmp_mask(captured, field->in_check_value, field->in_check_mask, num_bits);
1085         else
1086                 compare_failed = buf_cmp(captured, field->in_check_value, num_bits);
1087
1088         if (compare_failed)
1089         {
1090                 if (field->in_handler_error_handler.error_handler)
1091                 {
1092                         /* ask the error handler if once has been specified if this is a real problem */
1093                         if (field->in_handler_error_handler.error_handler(captured, field->in_handler_error_handler.error_handler_priv) != ERROR_OK)
1094                                 retval = ERROR_JTAG_QUEUE_FAILED;
1095                         else
1096                                 compare_failed = 0;
1097                 }
1098                 else
1099                 {
1100                         /* if there wasn't a handler specified, we report a failure */
1101                         retval = ERROR_JTAG_QUEUE_FAILED;
1102                 }
1103
1104                 /* An error handler could have caught the failing check
1105                  * only report a problem when there wasn't a handler, or if the handler
1106                  * acknowledged the error
1107                  */
1108                 if (compare_failed)
1109                 {
1110                         char *captured_char = buf_to_str(captured, (num_bits > 64) ? 64 : num_bits, 16);
1111                         char *in_check_value_char = buf_to_str(field->in_check_value, (num_bits > 64) ? 64 : num_bits, 16);
1112
1113                         if (field->in_check_mask)
1114                         {
1115                                 char *in_check_mask_char;
1116                                 in_check_mask_char = buf_to_str(field->in_check_mask, (num_bits > 64) ? 64 : num_bits, 16);
1117                                 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);
1118                                 free(in_check_mask_char);
1119                         }
1120                         else
1121                         {
1122                                 WARNING("value captured during scan didn't pass the requested check: captured: 0x%s check_value: 0x%s", captured_char, in_check_value_char);
1123                         }
1124
1125                         free(captured_char);
1126                         free(in_check_value_char);
1127                 }
1128
1129         }
1130         return retval;
1131 }
1132
1133 /*
1134   set up checking of this field using the in_handler. The values passed in must be valid until
1135   after jtag_execute() has completed.
1136  */
1137 void jtag_set_check_value(scan_field_t *field, u8 *value, u8 *mask, error_handler_t *in_error_handler)
1138 {
1139         if (value)
1140                 field->in_handler = jtag_check_value;
1141         else
1142                 field->in_handler = NULL;       /* No check, e.g. embeddedice uses value==NULL to indicate no check */
1143         field->in_handler_priv = NULL;  /* this will be filled in at the invocation site to point to the field duplicate */
1144         field->in_check_value = value;
1145         field->in_check_mask = mask;
1146         if (in_error_handler)
1147                 field->in_handler_error_handler = *in_error_handler;
1148         else
1149                 field->in_handler_error_handler.error_handler = NULL;
1150 }
1151
1152 enum scan_type jtag_scan_type(scan_command_t *cmd)
1153 {
1154         int i;
1155         int type = 0;
1156
1157         for (i = 0; i < cmd->num_fields; i++)
1158         {
1159                 if (cmd->fields[i].in_value || cmd->fields[i].in_handler)
1160                         type |= SCAN_IN;
1161                 if (cmd->fields[i].out_value)
1162                         type |= SCAN_OUT;
1163         }
1164
1165         return type;
1166 }
1167
1168 int jtag_execute_queue(void)
1169 {
1170         int retval;
1171
1172         retval = jtag->execute_queue();
1173
1174         cmd_queue_free();
1175
1176         jtag_command_queue = NULL;
1177         last_comand_pointer = &jtag_command_queue;
1178
1179         return retval;
1180 }
1181
1182 int jtag_cancel_queue(void)
1183 {
1184         cmd_queue_free();
1185         jtag_command_queue = NULL;
1186         last_comand_pointer = &jtag_command_queue;
1187
1188         return ERROR_OK;
1189 }
1190
1191 int jtag_reset_callback(enum jtag_event event, void *priv)
1192 {
1193         jtag_device_t *device = priv;
1194
1195         DEBUG("-");
1196
1197         if (event == JTAG_TRST_ASSERTED)
1198         {
1199                 buf_set_ones(device->cur_instr, device->ir_length);
1200                 device->bypass = 1;
1201         }
1202
1203         return ERROR_OK;
1204 }
1205
1206 void jtag_sleep(u32 us)
1207 {
1208         usleep(us);
1209 }
1210
1211 /* Try to examine chain layout according to IEEE 1149.1 §12
1212  */
1213 int jtag_examine_chain()
1214 {
1215         jtag_device_t *device = jtag_devices;
1216         scan_field_t field;
1217         u8 idcode_buffer[JTAG_MAX_CHAIN_SIZE * 4];
1218         int i;
1219         int bit_count;
1220         int device_count = 0;
1221         u8 zero_check = 0x0;
1222         u8 one_check = 0xff;
1223
1224         field.device = 0;
1225         field.num_bits = sizeof(idcode_buffer) * 8;
1226         field.out_value = idcode_buffer;
1227         field.out_mask = NULL;
1228         field.in_value = idcode_buffer;
1229         field.in_check_value = NULL;
1230         field.in_check_mask = NULL;
1231         field.in_handler = NULL;
1232         field.in_handler_priv = NULL;
1233
1234         for (i = 0; i < JTAG_MAX_CHAIN_SIZE; i++)
1235         {
1236                 buf_set_u32(idcode_buffer, i * 32, 32, 0x000000FF);
1237         }
1238
1239         jtag_add_plain_dr_scan(1, &field, TAP_TLR, NULL);
1240         jtag_execute_queue();
1241
1242         for (i = 0; i < JTAG_MAX_CHAIN_SIZE * 4; i++)
1243         {
1244                 zero_check |= idcode_buffer[i];
1245                 one_check &= idcode_buffer[i];
1246         }
1247
1248         /* if there wasn't a single non-zero bit or if all bits were one, the scan isn't valid */
1249         if ((zero_check == 0x00) || (one_check == 0xff))
1250         {
1251                 ERROR("JTAG communication failure, check connection, JTAG interface, target power etc.");
1252                 return ERROR_JTAG_INIT_FAILED;
1253         }
1254
1255         for (bit_count = 0; bit_count < (JTAG_MAX_CHAIN_SIZE * 32) - 31;)
1256         {
1257                 u32 idcode = buf_get_u32(idcode_buffer, bit_count, 32);
1258                 if ((idcode & 1) == 0)
1259                 {
1260                         /* LSB must not be 0, this indicates a device in bypass */
1261                         device_count++;
1262
1263                         bit_count += 1;
1264                 }
1265                 else
1266                 {
1267                         u32 manufacturer;
1268                         u32 part;
1269                         u32 version;
1270
1271                         if (idcode == 0x000000FF)
1272                         {
1273                                 /* End of chain (invalid manufacturer ID) */
1274                                 break;
1275                         }
1276
1277                         if (device)
1278                         {
1279                                 device->idcode = idcode;
1280                                 device = device->next;
1281                         }
1282                         device_count++;
1283
1284                         manufacturer = (idcode & 0xffe) >> 1;
1285                         part = (idcode & 0xffff000) >> 12;
1286                         version = (idcode & 0xf0000000) >> 28;
1287
1288                         INFO("JTAG device found: 0x%8.8x (Manufacturer: 0x%3.3x, Part: 0x%4.4x, Version: 0x%1.1x)",
1289                                 idcode, manufacturer, part, version);
1290
1291                         bit_count += 32;
1292                 }
1293         }
1294
1295         /* see if number of discovered devices matches configuration */
1296         if (device_count != jtag_num_devices)
1297         {
1298                 ERROR("number of discovered devices in JTAG chain (%i) doesn't match configuration (%i)",
1299                         device_count, jtag_num_devices);
1300                 ERROR("check the config file and ensure proper JTAG communication (connections, speed, ...)");
1301                 return ERROR_JTAG_INIT_FAILED;
1302         }
1303
1304         return ERROR_OK;
1305 }
1306
1307 int jtag_validate_chain()
1308 {
1309         jtag_device_t *device = jtag_devices;
1310         int total_ir_length = 0;
1311         u8 *ir_test = NULL;
1312         scan_field_t field;
1313         int chain_pos = 0;
1314
1315         while (device)
1316         {
1317                 total_ir_length += device->ir_length;
1318                 device = device->next;
1319         }
1320
1321         total_ir_length += 2;
1322         ir_test = malloc(CEIL(total_ir_length, 8));
1323         buf_set_ones(ir_test, total_ir_length);
1324
1325         field.device = 0;
1326         field.num_bits = total_ir_length;
1327         field.out_value = ir_test;
1328         field.out_mask = NULL;
1329         field.in_value = ir_test;
1330         field.in_check_value = NULL;
1331         field.in_check_mask = NULL;
1332         field.in_handler = NULL;
1333         field.in_handler_priv = NULL;
1334
1335         jtag_add_plain_ir_scan(1, &field, TAP_TLR, NULL);
1336         jtag_execute_queue();
1337
1338         device = jtag_devices;
1339         while (device)
1340         {
1341                 if (buf_get_u32(ir_test, chain_pos, 2) != 0x1)
1342                 {
1343                         char *cbuf = buf_to_str(ir_test, total_ir_length, 16);
1344                         ERROR("Error validating JTAG scan chain, IR mismatch, scan returned 0x%s", cbuf);
1345                         free(cbuf);
1346                         free(ir_test);
1347                         return ERROR_JTAG_INIT_FAILED;
1348                 }
1349                 chain_pos += device->ir_length;
1350                 device = device->next;
1351         }
1352
1353         if (buf_get_u32(ir_test, chain_pos, 2) != 0x3)
1354         {
1355                 char *cbuf = buf_to_str(ir_test, total_ir_length, 16);
1356                 ERROR("Error validating JTAG scan chain, IR mismatch, scan returned 0x%s", cbuf);
1357                 free(cbuf);
1358                 free(ir_test);
1359                 return ERROR_JTAG_INIT_FAILED;
1360         }
1361
1362         free(ir_test);
1363
1364         return ERROR_OK;
1365 }
1366
1367 int jtag_register_commands(struct command_context_s *cmd_ctx)
1368 {
1369         register_command(cmd_ctx, NULL, "interface", handle_interface_command,
1370                 COMMAND_CONFIG, NULL);
1371         register_command(cmd_ctx, NULL, "jtag_speed", handle_jtag_speed_command,
1372                 COMMAND_ANY, "set jtag speed (if supported) <speed>");
1373         register_command(cmd_ctx, NULL, "jtag_device", handle_jtag_device_command,
1374                 COMMAND_CONFIG, NULL);
1375         register_command(cmd_ctx, NULL, "reset_config", handle_reset_config_command,
1376                 COMMAND_CONFIG, NULL);
1377         register_command(cmd_ctx, NULL, "jtag_nsrst_delay", handle_jtag_nsrst_delay_command,
1378                 COMMAND_CONFIG, NULL);
1379         register_command(cmd_ctx, NULL, "jtag_ntrst_delay", handle_jtag_ntrst_delay_command,
1380                 COMMAND_CONFIG, NULL);
1381
1382         register_command(cmd_ctx, NULL, "scan_chain", handle_scan_chain_command,
1383                 COMMAND_EXEC, "print current scan chain configuration");
1384
1385         register_command(cmd_ctx, NULL, "endstate", handle_endstate_command,
1386                 COMMAND_EXEC, "finish JTAG operations in <tap_state>");
1387         register_command(cmd_ctx, NULL, "jtag_reset", handle_jtag_reset_command,
1388                 COMMAND_EXEC, "toggle reset lines <trst> <srst>");
1389         register_command(cmd_ctx, NULL, "runtest", handle_runtest_command,
1390                 COMMAND_EXEC, "move to Run-Test/Idle, and execute <num_cycles>");
1391         register_command(cmd_ctx, NULL, "statemove", handle_statemove_command,
1392                 COMMAND_EXEC, "move to current endstate or [tap_state]");
1393         register_command(cmd_ctx, NULL, "irscan", handle_irscan_command,
1394                 COMMAND_EXEC, "execute IR scan <device> <instr> [dev2] [instr2] ...");
1395         register_command(cmd_ctx, NULL, "drscan", handle_drscan_command,
1396                 COMMAND_EXEC, "execute DR scan <device> <var> [dev2] [var2] ...");
1397
1398         register_command(cmd_ctx, NULL, "verify_ircapture", handle_verify_ircapture_command,
1399                 COMMAND_ANY, "verify value captured during Capture-IR <enable|disable>");
1400         return ERROR_OK;
1401 }
1402
1403 int jtag_init(struct command_context_s *cmd_ctx)
1404 {
1405         int i, validate_tries = 0;
1406
1407         DEBUG("-");
1408
1409         if (jtag_speed == -1)
1410                 jtag_speed = 0;
1411
1412         if (jtag_interface && (jtag_interface[0] != 0))
1413                 /* configuration var 'jtag_interface' is set, and not empty */
1414                 for (i = 0; jtag_interfaces[i]; i++)
1415                 {
1416                         if (strcmp(jtag_interface, jtag_interfaces[i]->name) == 0)
1417                         {
1418                                 jtag_device_t *device;
1419                                 device = jtag_devices;
1420
1421                                 if (jtag_interfaces[i]->init() != ERROR_OK)
1422                                         return ERROR_JTAG_INIT_FAILED;
1423                                 jtag = jtag_interfaces[i];
1424
1425                                 jtag_ir_scan_size = 0;
1426                                 jtag_num_devices = 0;
1427                                 while (device != NULL)
1428                                 {
1429                                         jtag_ir_scan_size += device->ir_length;
1430                                         jtag_num_devices++;
1431                                         device = device->next;
1432                                 }
1433
1434                                 jtag_add_statemove(TAP_TLR);
1435                                 jtag_execute_queue();
1436
1437                                 /* examine chain first, as this could discover the real chain layout */
1438                                 if (jtag_examine_chain() != ERROR_OK)
1439                                 {
1440                                         ERROR("trying to validate configured JTAG chain anyway...");
1441                                 }
1442
1443                                 while (jtag_validate_chain() != ERROR_OK)
1444                                 {
1445                                         validate_tries++;
1446                                         if (validate_tries > 5)
1447                                         {
1448                                                 ERROR("Could not validate JTAG chain, exit");
1449                                                 jtag = NULL;
1450                                                 return ERROR_JTAG_INVALID_INTERFACE;
1451                                         }
1452                                         usleep(10000);
1453                                 }
1454
1455                                 return ERROR_OK;
1456                         }
1457                 }
1458
1459         /* no valid interface was found (i.e. the configuration option,
1460          * didn't match one of the compiled-in interfaces
1461          */
1462         ERROR("No valid jtag interface found (%s)", jtag_interface);
1463         ERROR("compiled-in jtag interfaces:");
1464         for (i = 0; jtag_interfaces[i]; i++)
1465         {
1466                 ERROR("%i: %s", i, jtag_interfaces[i]->name);
1467         }
1468
1469         jtag = NULL;
1470         return ERROR_JTAG_INVALID_INTERFACE;
1471 }
1472
1473 int handle_interface_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1474 {
1475         int i;
1476
1477         /* only if the configuration var isn't overwritten from cmdline */
1478         if (!jtag_interface)
1479         {
1480                 if (args[0] && (args[0][0] != 0))
1481                 {
1482                         for (i=0; jtag_interfaces[i]; i++)
1483                         {
1484                                 if (strcmp(args[0], jtag_interfaces[i]->name) == 0)
1485                                 {
1486                                         if (jtag_interfaces[i]->register_commands(cmd_ctx) != ERROR_OK)
1487                                                 exit(-1);
1488
1489                                         jtag_interface = jtag_interfaces[i]->name;
1490
1491                                         return ERROR_OK;
1492                                 }
1493                         }
1494                 }
1495
1496                 /* remember the requested interface name, so we can complain about it later */
1497                 jtag_interface = strdup(args[0]);
1498                 DEBUG("'interface' command didn't specify a valid interface");
1499         }
1500
1501         return ERROR_OK;
1502 }
1503
1504 int handle_jtag_device_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1505 {
1506         jtag_device_t **last_device_p = &jtag_devices;
1507
1508         if (*last_device_p)
1509         {
1510                 while ((*last_device_p)->next)
1511                         last_device_p = &((*last_device_p)->next);
1512                 last_device_p = &((*last_device_p)->next);
1513         }
1514
1515         if (argc < 3)
1516                 return ERROR_OK;
1517
1518         *last_device_p = malloc(sizeof(jtag_device_t));
1519         (*last_device_p)->ir_length = strtoul(args[0], NULL, 0);
1520
1521         (*last_device_p)->expected = malloc((*last_device_p)->ir_length);
1522         buf_set_u32((*last_device_p)->expected, 0, (*last_device_p)->ir_length, strtoul(args[1], NULL, 0));
1523         (*last_device_p)->expected_mask = malloc((*last_device_p)->ir_length);
1524         buf_set_u32((*last_device_p)->expected_mask, 0, (*last_device_p)->ir_length, strtoul(args[2], NULL, 0));
1525
1526         (*last_device_p)->cur_instr = malloc((*last_device_p)->ir_length);
1527         (*last_device_p)->bypass = 1;
1528         buf_set_ones((*last_device_p)->cur_instr, (*last_device_p)->ir_length);
1529
1530         (*last_device_p)->next = NULL;
1531
1532         jtag_register_event_callback(jtag_reset_callback, (*last_device_p));
1533
1534         jtag_num_devices++;
1535
1536         return ERROR_OK;
1537 }
1538
1539 int handle_scan_chain_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1540 {
1541         jtag_device_t *device = jtag_devices;
1542         int device_count = 0;
1543
1544         while (device)
1545         {
1546                 u32 expected, expected_mask, cur_instr;
1547                 expected = buf_get_u32(device->expected, 0, device->ir_length);
1548                 expected_mask = buf_get_u32(device->expected_mask, 0, device->ir_length);
1549                 cur_instr = buf_get_u32(device->cur_instr, 0, device->ir_length);
1550                 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);
1551                 device = device->next;
1552                 device_count++;
1553         }
1554
1555         return ERROR_OK;
1556 }
1557
1558 int handle_reset_config_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1559 {
1560         if (argc >= 1)
1561         {
1562                 if (strcmp(args[0], "none") == 0)
1563                         jtag_reset_config = RESET_NONE;
1564                 else if (strcmp(args[0], "trst_only") == 0)
1565                         jtag_reset_config = RESET_HAS_TRST;
1566                 else if (strcmp(args[0], "srst_only") == 0)
1567                         jtag_reset_config = RESET_HAS_SRST;
1568                 else if (strcmp(args[0], "trst_and_srst") == 0)
1569                         jtag_reset_config = RESET_TRST_AND_SRST;
1570                 else
1571                 {
1572                         ERROR("invalid reset_config argument, defaulting to none");
1573                         jtag_reset_config = RESET_NONE;
1574                         return ERROR_INVALID_ARGUMENTS;
1575                 }
1576         }
1577
1578         if (argc >= 2)
1579         {
1580                 if (strcmp(args[1], "srst_pulls_trst") == 0)
1581                         jtag_reset_config |= RESET_SRST_PULLS_TRST;
1582                 else if (strcmp(args[1], "trst_pulls_srst") == 0)
1583                         jtag_reset_config |= RESET_TRST_PULLS_SRST;
1584                 else if (strcmp(args[1], "combined") == 0)
1585                         jtag_reset_config |= RESET_SRST_PULLS_TRST | RESET_TRST_PULLS_SRST;
1586                 else if (strcmp(args[1], "separate") == 0)
1587                         jtag_reset_config &= ~(RESET_SRST_PULLS_TRST | RESET_TRST_PULLS_SRST);
1588                 else
1589                 {
1590                         ERROR("invalid reset_config argument, defaulting to none");
1591                         jtag_reset_config = RESET_NONE;
1592                         return ERROR_INVALID_ARGUMENTS;
1593                 }
1594         }
1595
1596         if (argc >= 3)
1597         {
1598                 if (strcmp(args[2], "trst_open_drain") == 0)
1599                         jtag_reset_config |= RESET_TRST_OPEN_DRAIN;
1600                 else if (strcmp(args[2], "trst_push_pull") == 0)
1601                         jtag_reset_config &= ~RESET_TRST_OPEN_DRAIN;
1602                 else
1603                 {
1604                         ERROR("invalid reset_config argument, defaulting to none");
1605                         jtag_reset_config = RESET_NONE;
1606                         return ERROR_INVALID_ARGUMENTS;
1607                 }
1608         }
1609
1610         if (argc >= 4)
1611         {
1612                 if (strcmp(args[3], "srst_push_pull") == 0)
1613                         jtag_reset_config |= RESET_SRST_PUSH_PULL;
1614                 else if (strcmp(args[3], "srst_open_drain") == 0)
1615                         jtag_reset_config &= ~RESET_SRST_PUSH_PULL;
1616                 else
1617                 {
1618                         ERROR("invalid reset_config argument, defaulting to none");
1619                         jtag_reset_config = RESET_NONE;
1620                         return ERROR_INVALID_ARGUMENTS;
1621                 }
1622         }
1623
1624         return ERROR_OK;
1625 }
1626
1627 int handle_jtag_nsrst_delay_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1628 {
1629         if (argc < 1)
1630         {
1631                 ERROR("jtag_nsrst_delay <ms> command takes one required argument");
1632                 exit(-1);
1633         }
1634         else
1635         {
1636                 jtag_nsrst_delay = strtoul(args[0], NULL, 0);
1637         }
1638
1639         return ERROR_OK;
1640 }
1641
1642 int handle_jtag_ntrst_delay_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1643 {
1644         if (argc < 1)
1645         {
1646                 ERROR("jtag_ntrst_delay <ms> command takes one required argument");
1647                 exit(-1);
1648         }
1649         else
1650         {
1651                 jtag_ntrst_delay = strtoul(args[0], NULL, 0);
1652         }
1653
1654         return ERROR_OK;
1655 }
1656
1657 int handle_jtag_speed_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1658 {
1659         if (argc == 0)
1660                 command_print(cmd_ctx, "jtag_speed: %i", jtag_speed);
1661
1662         if (argc > 0)
1663         {
1664                 /* this command can be called during CONFIG,
1665                  * in which case jtag isn't initialized */
1666                 if (jtag)
1667                         jtag->speed(strtoul(args[0], NULL, 0));
1668                 else
1669                         jtag_speed = strtoul(args[0], NULL, 0);
1670         }
1671
1672         return ERROR_OK;
1673 }
1674
1675 int handle_endstate_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1676 {
1677         enum tap_state state;
1678
1679         if (argc < 1)
1680         {
1681                 command_print(cmd_ctx, "usage: endstate <tap_state>");
1682         }
1683         else
1684         {
1685                 for (state = 0; state < 16; state++)
1686                 {
1687                         if (strcmp(args[0], tap_state_strings[state]) == 0)
1688                         {
1689                                 jtag_add_end_state(state);
1690                                 jtag_execute_queue();
1691                         }
1692                 }
1693         }
1694         command_print(cmd_ctx, "current endstate: %s", tap_state_strings[end_state]);
1695
1696         return ERROR_OK;
1697 }
1698
1699 int handle_jtag_reset_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1700 {
1701         int trst = -1;
1702         int srst = -1;
1703         char *usage = "usage: jtag_reset <trst> <srst>";
1704         int retval;
1705
1706         if (argc < 1)
1707         {
1708                 command_print(cmd_ctx, usage);
1709                 return ERROR_OK;
1710         }
1711
1712         if (args[0][0] == '1')
1713                 trst = 1;
1714         else if (args[0][0] == '0')
1715                 trst = 0;
1716         else
1717         {
1718                 command_print(cmd_ctx, usage);
1719                 return ERROR_OK;
1720         }
1721
1722         if (args[1][0] == '1')
1723                 srst = 1;
1724         else if (args[1][0] == '0')
1725                 srst = 0;
1726         else
1727         {
1728                 command_print(cmd_ctx, usage);
1729                 return ERROR_OK;
1730         }
1731
1732         if ((retval = jtag_add_reset(trst, srst)) != ERROR_OK)
1733         {
1734                 switch (retval)
1735                 {
1736                         case ERROR_JTAG_RESET_WOULD_ASSERT_TRST:
1737                                 command_print(cmd_ctx, "requested reset would assert trst\nif this is acceptable, use jtag_reset 1 %c", args[1][0]);
1738                                 break;
1739                         case ERROR_JTAG_RESET_CANT_SRST:
1740                                 command_print(cmd_ctx, "can't assert srst because the current reset_config doesn't support it");
1741                                 break;
1742                         default:
1743                                 command_print(cmd_ctx, "unknown error");
1744                 }
1745         }
1746         jtag_execute_queue();
1747
1748         return ERROR_OK;
1749 }
1750
1751 int handle_runtest_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1752 {
1753         if (argc < 1)
1754         {
1755                 command_print(cmd_ctx, "usage: runtest <num_cycles>");
1756                 return ERROR_OK;
1757         }
1758
1759         jtag_add_runtest(strtol(args[0], NULL, 0), -1);
1760         jtag_execute_queue();
1761
1762         return ERROR_OK;
1763
1764 }
1765
1766 int handle_statemove_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1767 {
1768         enum tap_state state;
1769
1770         state = -1;
1771         if (argc == 1)
1772         {
1773                 for (state = 0; state < 16; state++)
1774                 {
1775                         if (strcmp(args[0], tap_state_strings[state]) == 0)
1776                         {
1777                                 break;
1778                         }
1779                 }
1780         }
1781
1782         jtag_add_statemove(state);
1783         jtag_execute_queue();
1784
1785         return ERROR_OK;
1786
1787 }
1788
1789 int handle_irscan_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1790 {
1791         int i;
1792         scan_field_t *fields;
1793
1794         if ((argc < 2) || (argc % 2))
1795         {
1796                 command_print(cmd_ctx, "usage: irscan <device> <instr> [dev2] [instr2] ...");
1797                 return ERROR_OK;
1798         }
1799
1800         fields = malloc(sizeof(scan_field_t) * argc / 2);
1801
1802         for (i = 0; i < argc / 2; i++)
1803         {
1804                 int device = strtoul(args[i*2], NULL, 0);
1805                 int field_size = jtag_get_device(device)->ir_length;
1806                 fields[i].device = device;
1807                 fields[i].out_value = malloc(CEIL(field_size, 8));
1808                 buf_set_u32(fields[i].out_value, 0, field_size, strtoul(args[i*2+1], NULL, 0));
1809                 fields[i].out_mask = NULL;
1810                 fields[i].in_value = NULL;
1811                 fields[i].in_check_mask = NULL;
1812                 fields[i].in_handler = NULL;
1813                 fields[i].in_handler_priv = NULL;
1814         }
1815
1816         jtag_add_ir_scan(argc / 2, fields, -1, NULL);
1817         jtag_execute_queue();
1818
1819         for (i = 0; i < argc / 2; i++)
1820                 free(fields[i].out_value);
1821
1822         free (fields);
1823
1824         return ERROR_OK;
1825 }
1826
1827 int handle_drscan_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1828 {
1829         scan_field_t *fields;
1830         int num_fields = 0;
1831         int field_count = 0;
1832         var_t *var;
1833         int i, j;
1834
1835         if ((argc < 2) || (argc % 2))
1836         {
1837                 command_print(cmd_ctx, "usage: drscan <device> <var> [dev2] [var2]");
1838                 return ERROR_OK;
1839         }
1840
1841         for (i = 0; i < argc; i+=2)
1842         {
1843                 var = get_var_by_namenum(args[i+1]);
1844                 if (var)
1845                 {
1846                         num_fields += var->num_fields;
1847                 }
1848                 else
1849                 {
1850                         command_print(cmd_ctx, "variable %s doesn't exist", args[i+1]);
1851                         return ERROR_OK;
1852                 }
1853         }
1854
1855         fields = malloc(sizeof(scan_field_t) * num_fields);
1856
1857         for (i = 0; i < argc; i+=2)
1858         {
1859                 var = get_var_by_namenum(args[i+1]);
1860
1861                 for (j = 0; j < var->num_fields; j++)
1862                 {
1863                         fields[field_count].device = strtol(args[i], NULL, 0);
1864                         fields[field_count].num_bits = var->fields[j].num_bits;
1865                         fields[field_count].out_value = malloc(CEIL(var->fields[j].num_bits, 8));
1866                         buf_set_u32(fields[field_count].out_value, 0, var->fields[j].num_bits, var->fields[j].value);
1867                         fields[field_count].out_mask = NULL;
1868                         fields[field_count].in_value = fields[field_count].out_value;
1869                         fields[field_count].in_check_mask = NULL;
1870                         fields[field_count].in_check_value = NULL;
1871                         fields[field_count].in_handler = field_le_to_host;
1872                         fields[field_count++].in_handler_priv = &(var->fields[j]);
1873                 }
1874         }
1875
1876         jtag_add_dr_scan(num_fields, fields, -1, NULL);
1877         jtag_execute_queue();
1878
1879         for (i = 0; i < argc / 2; i++)
1880                 free(fields[i].out_value);
1881
1882         free(fields);
1883
1884         return ERROR_OK;
1885 }
1886
1887 int handle_verify_ircapture_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1888 {
1889         if (argc == 0)
1890         {
1891                 command_print(cmd_ctx, "verify Capture-IR is %s", (jtag_verify_capture_ir) ? "enabled": "disabled");
1892                 return ERROR_OK;
1893         }
1894
1895         if (strcmp(args[0], "enable") == 0)
1896         {
1897                 jtag_verify_capture_ir = 1;
1898         }
1899         else if (strcmp(args[0], "disable") == 0)
1900         {
1901                 jtag_verify_capture_ir = 0;
1902         }
1903
1904         return ERROR_OK;
1905 }