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   1 /***************************************************************************
   2  *   Copyright (C) 2005 by Dominic Rath                                    *
   3  *   Dominic.Rath@gmx.de                                                   *
   4  *                                                                         *
   5  *   This program is free software; you can redistribute it and/or modify  *
   6  *   it under the terms of the GNU General Public License as published by  *
   7  *   the Free Software Foundation; either version 2 of the License, or     *
   8  *   (at your option) any later version.                                   *
   9  *                                                                         *
  10  *   This program is distributed in the hope that it will be useful,       *
  11  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  12  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  13  *   GNU General Public License for more details.                          *
  14  *                                                                         *
  15  *   You should have received a copy of the GNU General Public License     *
  16  *   along with this program; if not, write to the                         *
  17  *   Free Software Foundation, Inc.,                                       *
  18  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
  19  ***************************************************************************/
  20 #ifdef HAVE_CONFIG_H
  21 #include "config.h"
  22 #endif
  23
  24 #include "replacements.h"
  25
  26 #include "jtag.h"
  27
  28 #include "command.h"
  29 #include "log.h"
  30 #include "interpreter.h"
  31
  32 #include "stdlib.h"
  33 #include "string.h"
  34 #include <unistd.h>
  35
  36
  37 /* note that this is not marked as static as it must be available from outside jtag.c for those
  38    that implement the jtag_xxx() minidriver layer
  39 */
  40 int jtag_error=ERROR_OK;
  41
  42
  43 char* tap_state_strings[16] =
  44 {
  45         "tlr",
  46         "sds", "cd", "sd", "e1d", "pd", "e2d", "ud",
  47         "rti",
  48         "sis", "ci", "si", "e1i", "pi", "e2i", "ui"
  49 };
  50
  51 typedef struct cmd_queue_page_s
  52 {
  53         void *address;
  54         size_t used;
  55         struct cmd_queue_page_s *next;
  56 } cmd_queue_page_t;
  57
  58 #define CMD_QUEUE_PAGE_SIZE (1024 * 1024)
  59 static cmd_queue_page_t *cmd_queue_pages = NULL;
  60
  61 /* tap_move[i][j]: tap movement command to go from state i to state j
  62  * 0: Test-Logic-Reset
  63  * 1: Run-Test/Idle
  64  * 2: Shift-DR
  65  * 3: Pause-DR
  66  * 4: Shift-IR
  67  * 5: Pause-IR
  68  *
  69  * SD->SD and SI->SI have to be caught in interface specific code
  70  */
  71 u8 tap_move[6][6] =
  72 {
  73 /*        TLR   RTI   SD    PD    SI    PI             */
  74         {0x7f, 0x00, 0x17, 0x0a, 0x1b, 0x16},   /* TLR */
  75         {0x7f, 0x00, 0x25, 0x05, 0x2b, 0x0b},   /* RTI */
  76         {0x7f, 0x31, 0x00, 0x01, 0x0f, 0x2f},   /* SD  */
  77         {0x7f, 0x30, 0x20, 0x17, 0x1e, 0x2f},   /* PD  */
  78         {0x7f, 0x31, 0x07, 0x17, 0x00, 0x01},   /* SI  */
  79         {0x7f, 0x30, 0x1c, 0x17, 0x20, 0x2f}    /* PI  */
  80 };
  81
  82 int tap_move_map[16] = {
  83         0, -1, -1,  2, -1,  3, -1, -1,
  84         1, -1, -1,  4, -1,  5, -1, -1
  85 };
  86
  87 tap_transition_t tap_transitions[16] =
  88 {
  89         {TAP_TLR, TAP_RTI},             /* TLR */
  90         {TAP_SIS, TAP_CD},              /* SDS */
  91         {TAP_E1D, TAP_SD},              /* CD  */
  92         {TAP_E1D, TAP_SD},              /* SD  */
  93         {TAP_UD,  TAP_PD},              /* E1D */
  94         {TAP_E2D, TAP_PD},              /* PD  */
  95         {TAP_UD,  TAP_SD},              /* E2D */
  96         {TAP_SDS, TAP_RTI},             /* UD  */
  97         {TAP_SDS, TAP_RTI},             /* RTI */
  98         {TAP_TLR, TAP_CI},              /* SIS */
  99         {TAP_E1I, TAP_SI},              /* CI  */
 100         {TAP_E1I, TAP_SI},              /* SI  */
 101         {TAP_UI,  TAP_PI},              /* E1I */
 102         {TAP_E2I, TAP_PI},              /* PI  */
 103         {TAP_UI,  TAP_SI},              /* E2I */
 104         {TAP_SDS, TAP_RTI}              /* UI  */
 105 };
 106
 107 char* jtag_event_strings[] =
 108 {
 109         "JTAG controller reset(tms or TRST)"
 110 };
 111
 112 enum tap_state end_state = TAP_TLR;
 113 enum tap_state cur_state = TAP_TLR;
 114 int jtag_trst = 0;
 115 int jtag_srst = 0;
 116
 117 jtag_command_t *jtag_command_queue = NULL;
 118 jtag_command_t **last_comand_pointer = &jtag_command_queue;
 119 jtag_device_t *jtag_devices = NULL;
 120 int jtag_num_devices = 0;
 121 int jtag_ir_scan_size = 0;
 122 enum reset_types jtag_reset_config = RESET_NONE;
 123 enum tap_state cmd_queue_end_state = TAP_TLR;
 124 enum tap_state cmd_queue_cur_state = TAP_TLR;
 125
 126 int jtag_verify_capture_ir = 1;
 127
 128 /* how long the OpenOCD should wait before attempting JTAG communication after reset lines deasserted (in ms) */
 129 int jtag_nsrst_delay = 0; /* default to no nSRST delay */
 130 int jtag_ntrst_delay = 0; /* default to no nTRST delay */
 131
 132 /* maximum number of JTAG devices expected in the chain
 133  */
 134 #define JTAG_MAX_CHAIN_SIZE 20
 135
 136 /* callbacks to inform high-level handlers about JTAG state changes */
 137 jtag_event_callback_t *jtag_event_callbacks;
 138
 139 /* jtag interfaces (parport, FTDI-USB, TI-USB, ...)
 140  */
 141
 142 #if BUILD_ECOSBOARD == 1
 143         extern jtag_interface_t eCosBoard_interface;
 144 #endif
 145
 146 #if BUILD_PARPORT == 1
 147         extern jtag_interface_t parport_interface;
 148 #endif
 149
 150 #if BUILD_FT2232_FTD2XX == 1
 151         extern jtag_interface_t ft2232_interface;
 152 #endif
 153
 154 #if BUILD_FT2232_LIBFTDI == 1
 155         extern jtag_interface_t ft2232_interface;
 156 #endif
 157
 158 #if BUILD_AMTJTAGACCEL == 1
 159         extern jtag_interface_t amt_jtagaccel_interface;
 160 #endif
 161
 162 #if BUILD_EP93XX == 1
 163         extern jtag_interface_t ep93xx_interface;
 164 #endif
 165
 166 #if BUILD_AT91RM9200 == 1
 167         extern jtag_interface_t at91rm9200_interface;
 168 #endif
 169
 170 #if BUILD_GW16012 == 1
 171         extern jtag_interface_t gw16012_interface;
 172 #endif
 173
 174 #if BUILD_PRESTO_LIBFTDI == 1 || BUILD_PRESTO_FTD2XX == 1
 175         extern jtag_interface_t presto_interface;
 176 #endif
 177
 178 #if BUILD_USBPROG == 1
 179         extern jtag_interface_t usbprog_interface;
 180 #endif
 181
 182 jtag_interface_t *jtag_interfaces[] = {
 183 #if BUILD_ECOSBOARD == 1
 184         &eCosBoard_interface,
 185 #endif
 186 #if BUILD_PARPORT == 1
 187         &parport_interface,
 188 #endif
 189 #if BUILD_FT2232_FTD2XX == 1
 190         &ft2232_interface,
 191 #endif
 192 #if BUILD_FT2232_LIBFTDI == 1
 193         &ft2232_interface,
 194 #endif
 195 #if BUILD_AMTJTAGACCEL == 1
 196         &amt_jtagaccel_interface,
 197 #endif
 198 #if BUILD_EP93XX == 1
 199         &ep93xx_interface,
 200 #endif
 201 #if BUILD_AT91RM9200 == 1
 202         &at91rm9200_interface,
 203 #endif
 204 #if BUILD_GW16012 == 1
 205         &gw16012_interface,
 206 #endif
 207 #if BUILD_PRESTO_LIBFTDI == 1 || BUILD_PRESTO_FTD2XX == 1
 208         &presto_interface,
 209 #endif
 210 #if BUILD_USBPROG == 1
 211         &usbprog_interface,
 212 #endif
 213         NULL,
 214 };
 215
 216 jtag_interface_t *jtag = NULL;
 217
 218 /* configuration */
 219 jtag_interface_t *jtag_interface = NULL;
 220 int jtag_speed = 0;
 221
 222
 223 /* forward declarations */
 224 void jtag_add_statemove(enum tap_state endstate);
 225 void jtag_add_pathmove(int num_states, enum tap_state *path);
 226 void jtag_add_runtest(int num_cycles, enum tap_state endstate);
 227 int jtag_add_reset(int trst, int srst);
 228 void jtag_add_end_state(enum tap_state endstate);
 229 void jtag_add_sleep(u32 us);
 230 int jtag_execute_queue(void);
 231 int jtag_cancel_queue(void);
 232
 233 /* jtag commands */
 234 int handle_interface_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 235 int handle_jtag_speed_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 236 int handle_jtag_device_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 237 int handle_reset_config_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 238 int handle_jtag_nsrst_delay_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 239 int handle_jtag_ntrst_delay_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 240
 241 int handle_scan_chain_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 242
 243 int handle_endstate_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 244 int handle_jtag_reset_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 245 int handle_runtest_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 246 int handle_statemove_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 247 int handle_irscan_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 248 int handle_drscan_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 249
 250 int handle_verify_ircapture_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 251
 252 int jtag_register_event_callback(int (*callback)(enum jtag_event event, void *priv), void *priv)
 253 {
 254         jtag_event_callback_t **callbacks_p = &jtag_event_callbacks;
 255
 256         if (callback == NULL)
 257         {
 258                 return ERROR_INVALID_ARGUMENTS;
 259         }
 260
 261         if (*callbacks_p)
 262         {
 263                 while ((*callbacks_p)->next)
 264                         callbacks_p = &((*callbacks_p)->next);
 265                 callbacks_p = &((*callbacks_p)->next);
 266         }
 267
 268         (*callbacks_p) = malloc(sizeof(jtag_event_callback_t));
 269         (*callbacks_p)->callback = callback;
 270         (*callbacks_p)->priv = priv;
 271         (*callbacks_p)->next = NULL;
 272
 273         return ERROR_OK;
 274 }
 275
 276 int jtag_unregister_event_callback(int (*callback)(enum jtag_event event, void *priv))
 277 {
 278         jtag_event_callback_t **callbacks_p = &jtag_event_callbacks;
 279
 280         if (callback == NULL)
 281         {
 282                 return ERROR_INVALID_ARGUMENTS;
 283         }
 284
 285         while (*callbacks_p)
 286         {
 287                 jtag_event_callback_t **next = &((*callbacks_p)->next);
 288                 if ((*callbacks_p)->callback == callback)
 289                 {
 290                         free(*callbacks_p);
 291                         *callbacks_p = *next;
 292                 }
 293                 callbacks_p = next;
 294         }
 295
 296         return ERROR_OK;
 297 }
 298
 299 int jtag_call_event_callbacks(enum jtag_event event)
 300 {
 301         jtag_event_callback_t *callback = jtag_event_callbacks;
 302
 303         DEBUG("jtag event: %s", jtag_event_strings[event]);
 304
 305         while (callback)
 306         {
 307                 callback->callback(event, callback->priv);
 308                 callback = callback->next;
 309         }
 310
 311         return ERROR_OK;
 312 }
 313
 314 /* returns a pointer to the pointer of the last command in queue
 315  * this may be a pointer to the root pointer (jtag_command_queue)
 316  * or to the next member of the last but one command
 317  */
 318 jtag_command_t** jtag_get_last_command_p(void)
 319 {
 320 /*      jtag_command_t *cmd = jtag_command_queue;
 321
 322         if (cmd)
 323                 while (cmd->next)
 324                         cmd = cmd->next;
 325         else
 326                 return &jtag_command_queue;
 327
 328         return &cmd->next;*/
 329
 330         return last_comand_pointer;
 331 }
 332
 333 /* returns a pointer to the n-th device in the scan chain */
 334 jtag_device_t* jtag_get_device(int num)
 335 {
 336         jtag_device_t *device = jtag_devices;
 337         int i = 0;
 338
 339         while (device)
 340         {
 341                 if (num == i)
 342                         return device;
 343                 device = device->next;
 344                 i++;
 345         }
 346
 347         ERROR("jtag device number %d not defined", num);
 348         exit(-1);
 349 }
 350
 351 void* cmd_queue_alloc(size_t size)
 352 {
 353         cmd_queue_page_t **p_page = &cmd_queue_pages;
 354         int offset;
 355
 356         if (*p_page)
 357         {
 358                 while ((*p_page)->next)
 359                         p_page = &((*p_page)->next);
 360                 if (CMD_QUEUE_PAGE_SIZE - (*p_page)->used < size)
 361                         p_page = &((*p_page)->next);
 362         }
 363
 364         if (!*p_page)
 365         {
 366                 *p_page = malloc(sizeof(cmd_queue_page_t));
 367                 (*p_page)->used = 0;
 368                 (*p_page)->address = malloc(CMD_QUEUE_PAGE_SIZE);
 369                 (*p_page)->next = NULL;
 370         }
 371
 372         offset = (*p_page)->used;
 373         (*p_page)->used += size;
 374
 375         u8 *t=(u8 *)((*p_page)->address);
 376         return t + offset;
 377 }
 378
 379 void cmd_queue_free()
 380 {
 381         cmd_queue_page_t *page = cmd_queue_pages;
 382
 383         while (page)
 384         {
 385                 cmd_queue_page_t *last = page;
 386                 free(page->address);
 387                 page = page->next;
 388                 free(last);
 389         }
 390
 391         cmd_queue_pages = NULL;
 392 }
 393
 394 void jtag_add_ir_scan(int num_fields, scan_field_t *fields, enum tap_state state)
 395 {
 396         if (jtag_trst == 1)
 397         {
 398                 WARNING("JTAG command queued, while TRST is low (TAP in reset)");
 399                 jtag_error=ERROR_JTAG_TRST_ASSERTED;
 400                 return;
 401         }
 402
 403         if (state != -1)
 404                 cmd_queue_end_state = state;
 405
 406         if (cmd_queue_end_state == TAP_TLR)
 407                 jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
 408
 409         cmd_queue_cur_state = cmd_queue_end_state;
 410
 411         int retval=interface_jtag_add_ir_scan(num_fields, fields, cmd_queue_end_state);
 412         if (retval!=ERROR_OK)
 413                 jtag_error=retval;
 414 }
 415
 416 int MINIDRIVER(interface_jtag_add_ir_scan)(int num_fields, scan_field_t *fields, enum tap_state state)
 417 {
 418         jtag_command_t **last_cmd;
 419         jtag_device_t *device;
 420         int i, j;
 421         int scan_size = 0;
 422
 423
 424         last_cmd = jtag_get_last_command_p();
 425
 426         /* allocate memory for a new list member */
 427         *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
 428         (*last_cmd)->next = NULL;
 429         last_comand_pointer = &((*last_cmd)->next);
 430         (*last_cmd)->type = JTAG_SCAN;
 431
 432         /* allocate memory for ir scan command */
 433         (*last_cmd)->cmd.scan = cmd_queue_alloc(sizeof(scan_command_t));
 434         (*last_cmd)->cmd.scan->ir_scan = 1;
 435         (*last_cmd)->cmd.scan->num_fields = jtag_num_devices;   /* one field per device */
 436         (*last_cmd)->cmd.scan->fields = cmd_queue_alloc(jtag_num_devices * sizeof(scan_field_t));
 437         (*last_cmd)->cmd.scan->end_state = state;
 438
 439         for (i = 0; i < jtag_num_devices; i++)
 440         {
 441                 int found = 0;
 442                 device = jtag_get_device(i);
 443                 scan_size = device->ir_length;
 444                 (*last_cmd)->cmd.scan->fields[i].device = i;
 445                 (*last_cmd)->cmd.scan->fields[i].num_bits = scan_size;
 446                 (*last_cmd)->cmd.scan->fields[i].in_value = NULL;
 447                 (*last_cmd)->cmd.scan->fields[i].in_handler = NULL;     /* disable verification by default */
 448
 449                 /* search the list */
 450                 for (j = 0; j < num_fields; j++)
 451                 {
 452                         if (i == fields[j].device)
 453                         {
 454                                 found = 1;
 455                                 (*last_cmd)->cmd.scan->fields[i].out_value = buf_cpy(fields[j].out_value, cmd_queue_alloc(CEIL(scan_size, 8)), scan_size);
 456                                 (*last_cmd)->cmd.scan->fields[i].out_mask = buf_cpy(fields[j].out_mask, cmd_queue_alloc(CEIL(scan_size, 8)), scan_size);
 457
 458                                 if (jtag_verify_capture_ir)
 459                                 {
 460                                         if (fields[j].in_handler==NULL)
 461                                         {
 462                                                 jtag_set_check_value((*last_cmd)->cmd.scan->fields+i, device->expected, device->expected_mask, NULL);
 463                                         } else
 464                                         {
 465                                                 (*last_cmd)->cmd.scan->fields[i].in_handler = fields[j].in_handler;
 466                                                 (*last_cmd)->cmd.scan->fields[i].in_handler_priv = fields[j].in_handler_priv;
 467                                                 (*last_cmd)->cmd.scan->fields[i].in_check_value = device->expected;
 468                                                 (*last_cmd)->cmd.scan->fields[i].in_check_mask = device->expected_mask;
 469                                         }
 470                                 }
 471
 472                                 device->bypass = 0;
 473                                 break;
 474                         }
 475                 }
 476
 477                 if (!found)
 478                 {
 479                         /* if a device isn't listed, set it to BYPASS */
 480                         (*last_cmd)->cmd.scan->fields[i].out_value = buf_set_ones(cmd_queue_alloc(CEIL(scan_size, 8)), scan_size);
 481                         (*last_cmd)->cmd.scan->fields[i].out_mask = NULL;
 482                         device->bypass = 1;
 483
 484                 }
 485
 486                 /* update device information */
 487                 buf_cpy((*last_cmd)->cmd.scan->fields[i].out_value, jtag_get_device(i)->cur_instr, scan_size);
 488         }
 489
 490         return ERROR_OK;
 491 }
 492
 493 void jtag_add_plain_ir_scan(int num_fields, scan_field_t *fields, enum tap_state state)
 494 {
 495         if (jtag_trst == 1)
 496         {
 497                 WARNING("JTAG command queued, while TRST is low (TAP in reset)");
 498                 jtag_error=ERROR_JTAG_TRST_ASSERTED;
 499                 return;
 500         }
 501
 502         if (state != -1)
 503                 cmd_queue_end_state = state;
 504
 505         if (cmd_queue_end_state == TAP_TLR)
 506                 jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
 507
 508         cmd_queue_cur_state = cmd_queue_end_state;
 509
 510         int retval=interface_jtag_add_plain_ir_scan(num_fields, fields, cmd_queue_end_state);
 511         if (retval!=ERROR_OK)
 512                 jtag_error=retval;
 513 }
 514
 515 int MINIDRIVER(interface_jtag_add_plain_ir_scan)(int num_fields, scan_field_t *fields, enum tap_state state)
 516 {
 517         int i;
 518         jtag_command_t **last_cmd;
 519
 520         last_cmd = jtag_get_last_command_p();
 521
 522         /* allocate memory for a new list member */
 523         *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
 524         (*last_cmd)->next = NULL;
 525         last_comand_pointer = &((*last_cmd)->next);
 526         (*last_cmd)->type = JTAG_SCAN;
 527
 528         /* allocate memory for ir scan command */
 529         (*last_cmd)->cmd.scan = cmd_queue_alloc(sizeof(scan_command_t));
 530         (*last_cmd)->cmd.scan->ir_scan = 1;
 531         (*last_cmd)->cmd.scan->num_fields = num_fields;
 532         (*last_cmd)->cmd.scan->fields = cmd_queue_alloc(num_fields * sizeof(scan_field_t));
 533         (*last_cmd)->cmd.scan->end_state = state;
 534
 535         for (i = 0; i < num_fields; i++)
 536         {
 537                 int num_bits = fields[i].num_bits;
 538                 int num_bytes = CEIL(fields[i].num_bits, 8);
 539                 (*last_cmd)->cmd.scan->fields[i].device = fields[i].device;
 540                 (*last_cmd)->cmd.scan->fields[i].num_bits = num_bits;
 541                 (*last_cmd)->cmd.scan->fields[i].out_value = buf_cpy(fields[i].out_value, cmd_queue_alloc(num_bytes), num_bits);
 542                 (*last_cmd)->cmd.scan->fields[i].out_mask = buf_cpy(fields[i].out_mask, cmd_queue_alloc(num_bytes), num_bits);
 543                 (*last_cmd)->cmd.scan->fields[i].in_value = fields[i].in_value;
 544                 (*last_cmd)->cmd.scan->fields[i].in_check_value = fields[i].in_check_value;
 545                 (*last_cmd)->cmd.scan->fields[i].in_check_mask = fields[i].in_check_mask;
 546                 (*last_cmd)->cmd.scan->fields[i].in_handler = NULL;
 547                 (*last_cmd)->cmd.scan->fields[i].in_handler_priv = NULL;
 548         }
 549         return ERROR_OK;
 550 }
 551
 552 void jtag_add_dr_scan(int num_fields, scan_field_t *fields, enum tap_state state)
 553 {
 554         if (jtag_trst == 1)
 555         {
 556                 WARNING("JTAG command queued, while TRST is low (TAP in reset)");
 557                 jtag_error=ERROR_JTAG_TRST_ASSERTED;
 558                 return;
 559         }
 560
 561         if (state != -1)
 562                 cmd_queue_end_state = state;
 563
 564         if (cmd_queue_end_state == TAP_TLR)
 565                 jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
 566
 567         cmd_queue_cur_state = cmd_queue_end_state;
 568
 569         int retval=interface_jtag_add_dr_scan(num_fields, fields, cmd_queue_end_state);
 570         if (retval!=ERROR_OK)
 571                 jtag_error=retval;
 572 }
 573
 574 int MINIDRIVER(interface_jtag_add_dr_scan)(int num_fields, scan_field_t *fields, enum tap_state state)
 575 {
 576         int i, j;
 577         int bypass_devices = 0;
 578         int field_count = 0;
 579         int scan_size;
 580
 581         jtag_command_t **last_cmd = jtag_get_last_command_p();
 582         jtag_device_t *device = jtag_devices;
 583
 584         /* count devices in bypass */
 585         while (device)
 586         {
 587                 if (device->bypass)
 588                         bypass_devices++;
 589                 device = device->next;
 590         }
 591
 592         /* allocate memory for a new list member */
 593         *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
 594         last_comand_pointer = &((*last_cmd)->next);
 595         (*last_cmd)->next = NULL;
 596         (*last_cmd)->type = JTAG_SCAN;
 597
 598         /* allocate memory for dr scan command */
 599         (*last_cmd)->cmd.scan = cmd_queue_alloc(sizeof(scan_command_t));
 600         (*last_cmd)->cmd.scan->ir_scan = 0;
 601         (*last_cmd)->cmd.scan->num_fields = num_fields + bypass_devices;
 602         (*last_cmd)->cmd.scan->fields = cmd_queue_alloc((num_fields + bypass_devices) * sizeof(scan_field_t));
 603         (*last_cmd)->cmd.scan->end_state = state;
 604
 605         for (i = 0; i < jtag_num_devices; i++)
 606         {
 607                 int found = 0;
 608                 (*last_cmd)->cmd.scan->fields[field_count].device = i;
 609
 610                 for (j = 0; j < num_fields; j++)
 611                 {
 612                         if (i == fields[j].device)
 613                         {
 614                                 found = 1;
 615                                 scan_size = fields[j].num_bits;
 616                                 (*last_cmd)->cmd.scan->fields[field_count].num_bits = scan_size;
 617                                 (*last_cmd)->cmd.scan->fields[field_count].out_value = buf_cpy(fields[j].out_value, cmd_queue_alloc(CEIL(scan_size, 8)), scan_size);
 618                                 (*last_cmd)->cmd.scan->fields[field_count].out_mask = buf_cpy(fields[j].out_mask, cmd_queue_alloc(CEIL(scan_size, 8)), scan_size);
 619                                 (*last_cmd)->cmd.scan->fields[field_count].in_value = fields[j].in_value;
 620                                 (*last_cmd)->cmd.scan->fields[field_count].in_check_value = fields[j].in_check_value;
 621                                 (*last_cmd)->cmd.scan->fields[field_count].in_check_mask = fields[j].in_check_mask;
 622                                 (*last_cmd)->cmd.scan->fields[field_count].in_handler = fields[j].in_handler;
 623                                 (*last_cmd)->cmd.scan->fields[field_count++].in_handler_priv = fields[j].in_handler_priv;
 624                         }
 625                 }
 626                 if (!found)
 627                 {
 628 #ifdef _DEBUG_JTAG_IO_
 629                         /* if a device isn't listed, the BYPASS register should be selected */
 630                         if (!jtag_get_device(i)->bypass)
 631                         {
 632                                 ERROR("BUG: no scan data for a device not in BYPASS");
 633                                 exit(-1);
 634                         }
 635 #endif
 636                         /* program the scan field to 1 bit length, and ignore it's value */
 637                         (*last_cmd)->cmd.scan->fields[field_count].num_bits = 1;
 638                         (*last_cmd)->cmd.scan->fields[field_count].out_value = NULL;
 639                         (*last_cmd)->cmd.scan->fields[field_count].out_mask = NULL;
 640                         (*last_cmd)->cmd.scan->fields[field_count].in_value = NULL;
 641                         (*last_cmd)->cmd.scan->fields[field_count].in_check_value = NULL;
 642                         (*last_cmd)->cmd.scan->fields[field_count].in_check_mask = NULL;
 643                         (*last_cmd)->cmd.scan->fields[field_count].in_handler = NULL;
 644                         (*last_cmd)->cmd.scan->fields[field_count++].in_handler_priv = NULL;
 645                 }
 646                 else
 647                 {
 648 #ifdef _DEBUG_JTAG_IO_
 649                         /* if a device is listed, the BYPASS register must not be selected */
 650                         if (jtag_get_device(i)->bypass)
 651                         {
 652                                 ERROR("BUG: scan data for a device in BYPASS");
 653                                 exit(-1);
 654                         }
 655 #endif
 656                 }
 657         }
 658         return ERROR_OK;
 659 }
 660
 661 void MINIDRIVER(interface_jtag_add_dr_out)(int device_num,
 662                 int num_fields,
 663                 int *num_bits,
 664                 u32 *value,
 665                 enum tap_state end_state)
 666 {
 667         int i;
 668         int field_count = 0;
 669         int scan_size;
 670         int bypass_devices = 0;
 671
 672         jtag_command_t **last_cmd = jtag_get_last_command_p();
 673         jtag_device_t *device = jtag_devices;
 674         /* count devices in bypass */
 675         while (device)
 676         {
 677                 if (device->bypass)
 678                         bypass_devices++;
 679                 device = device->next;
 680         }
 681
 682         /* allocate memory for a new list member */
 683         *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
 684         last_comand_pointer = &((*last_cmd)->next);
 685         (*last_cmd)->next = NULL;
 686         (*last_cmd)->type = JTAG_SCAN;
 687
 688         /* allocate memory for dr scan command */
 689         (*last_cmd)->cmd.scan = cmd_queue_alloc(sizeof(scan_command_t));
 690         (*last_cmd)->cmd.scan->ir_scan = 0;
 691         (*last_cmd)->cmd.scan->num_fields = num_fields + bypass_devices;
 692         (*last_cmd)->cmd.scan->fields = cmd_queue_alloc((num_fields + bypass_devices) * sizeof(scan_field_t));
 693         (*last_cmd)->cmd.scan->end_state = end_state;
 694
 695         for (i = 0; i < jtag_num_devices; i++)
 696         {
 697                 (*last_cmd)->cmd.scan->fields[field_count].device = i;
 698
 699                 if (i == device_num)
 700                 {
 701                         int j;
 702 #ifdef _DEBUG_JTAG_IO_
 703                         /* if a device is listed, the BYPASS register must not be selected */
 704                         if (jtag_get_device(i)->bypass)
 705                         {
 706                                 ERROR("BUG: scan data for a device in BYPASS");
 707                                 exit(-1);
 708                         }
 709 #endif
 710                         for (j = 0; j < num_fields; j++)
 711                         {
 712                                 u8 out_value[4];
 713                                 scan_size = num_bits[j];
 714                                 buf_set_u32(out_value, 0, scan_size, value[j]);
 715                                 (*last_cmd)->cmd.scan->fields[field_count].num_bits = scan_size;
 716                                 (*last_cmd)->cmd.scan->fields[field_count].out_value = buf_cpy(out_value, cmd_queue_alloc(CEIL(scan_size, 8)), scan_size);
 717                                 (*last_cmd)->cmd.scan->fields[field_count].out_mask = NULL;
 718                                 (*last_cmd)->cmd.scan->fields[field_count].in_value = NULL;
 719                                 (*last_cmd)->cmd.scan->fields[field_count].in_check_value = NULL;
 720                                 (*last_cmd)->cmd.scan->fields[field_count].in_check_mask = NULL;
 721                                 (*last_cmd)->cmd.scan->fields[field_count].in_handler = NULL;
 722                                 (*last_cmd)->cmd.scan->fields[field_count++].in_handler_priv = NULL;
 723                         }
 724                 } else
 725                 {
 726 #ifdef _DEBUG_JTAG_IO_
 727                         /* if a device isn't listed, the BYPASS register should be selected */
 728                         if (!jtag_get_device(i)->bypass)
 729                         {
 730                                 ERROR("BUG: no scan data for a device not in BYPASS");
 731                                 exit(-1);
 732                         }
 733 #endif
 734                         /* program the scan field to 1 bit length, and ignore it's value */
 735                         (*last_cmd)->cmd.scan->fields[field_count].num_bits = 1;
 736                         (*last_cmd)->cmd.scan->fields[field_count].out_value = NULL;
 737                         (*last_cmd)->cmd.scan->fields[field_count].out_mask = NULL;
 738                         (*last_cmd)->cmd.scan->fields[field_count].in_value = NULL;
 739                         (*last_cmd)->cmd.scan->fields[field_count].in_check_value = NULL;
 740                         (*last_cmd)->cmd.scan->fields[field_count].in_check_mask = NULL;
 741                         (*last_cmd)->cmd.scan->fields[field_count].in_handler = NULL;
 742                         (*last_cmd)->cmd.scan->fields[field_count++].in_handler_priv = NULL;
 743                 }
 744         }
 745 }
 746
 747
 748
 749
 750 void jtag_add_plain_dr_scan(int num_fields, scan_field_t *fields, enum tap_state state)
 751 {
 752         if (jtag_trst == 1)
 753         {
 754                 WARNING("JTAG command queued, while TRST is low (TAP in reset)");
 755                 jtag_error=ERROR_JTAG_TRST_ASSERTED;
 756                 return;
 757         }
 758
 759         if (state != -1)
 760                 cmd_queue_end_state = state;
 761
 762         if (cmd_queue_end_state == TAP_TLR)
 763                 jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
 764
 765         cmd_queue_cur_state = cmd_queue_end_state;
 766
 767         int retval=interface_jtag_add_plain_dr_scan(num_fields, fields, cmd_queue_end_state);
 768         if (retval!=ERROR_OK)
 769                 jtag_error=retval;
 770 }
 771
 772 int MINIDRIVER(interface_jtag_add_plain_dr_scan)(int num_fields, scan_field_t *fields, enum tap_state state)
 773 {
 774         int i;
 775         jtag_command_t **last_cmd = jtag_get_last_command_p();
 776
 777         /* allocate memory for a new list member */
 778         *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
 779         last_comand_pointer = &((*last_cmd)->next);
 780         (*last_cmd)->next = NULL;
 781         (*last_cmd)->type = JTAG_SCAN;
 782
 783         /* allocate memory for scan command */
 784         (*last_cmd)->cmd.scan = cmd_queue_alloc(sizeof(scan_command_t));
 785         (*last_cmd)->cmd.scan->ir_scan = 0;
 786         (*last_cmd)->cmd.scan->num_fields = num_fields;
 787         (*last_cmd)->cmd.scan->fields = cmd_queue_alloc(num_fields * sizeof(scan_field_t));
 788         (*last_cmd)->cmd.scan->end_state = state;
 789
 790         for (i = 0; i < num_fields; i++)
 791         {
 792                 int num_bits = fields[i].num_bits;
 793                 int num_bytes = CEIL(fields[i].num_bits, 8);
 794                 (*last_cmd)->cmd.scan->fields[i].device = fields[i].device;
 795                 (*last_cmd)->cmd.scan->fields[i].num_bits = num_bits;
 796                 (*last_cmd)->cmd.scan->fields[i].out_value = buf_cpy(fields[i].out_value, cmd_queue_alloc(num_bytes), num_bits);
 797                 (*last_cmd)->cmd.scan->fields[i].out_mask = buf_cpy(fields[i].out_mask, cmd_queue_alloc(num_bytes), num_bits);
 798                 (*last_cmd)->cmd.scan->fields[i].in_value = fields[i].in_value;
 799                 (*last_cmd)->cmd.scan->fields[i].in_check_value = fields[i].in_check_value;
 800                 (*last_cmd)->cmd.scan->fields[i].in_check_mask = fields[i].in_check_mask;
 801                 (*last_cmd)->cmd.scan->fields[i].in_handler = fields[i].in_handler;
 802                 (*last_cmd)->cmd.scan->fields[i].in_handler_priv = fields[i].in_handler_priv;
 803         }
 804
 805         return ERROR_OK;
 806 }
 807 void jtag_add_statemove(enum tap_state state)
 808 {
 809         if (jtag_trst == 1)
 810         {
 811                 WARNING("JTAG command queued, while TRST is low (TAP in reset)");
 812                 jtag_error=ERROR_JTAG_TRST_ASSERTED;
 813                 return;
 814         }
 815
 816         if (state != -1)
 817                 cmd_queue_end_state = state;
 818
 819         if (cmd_queue_end_state == TAP_TLR)
 820                 jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
 821
 822         cmd_queue_cur_state = cmd_queue_end_state;
 823
 824         int retval;
 825         retval=interface_jtag_add_statemove(cmd_queue_end_state);
 826         if (retval!=ERROR_OK)
 827                 jtag_error=retval;
 828 }
 829
 830 int MINIDRIVER(interface_jtag_add_statemove)(enum tap_state state)
 831 {
 832         jtag_command_t **last_cmd = jtag_get_last_command_p();
 833
 834         /* allocate memory for a new list member */
 835         *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
 836         last_comand_pointer = &((*last_cmd)->next);
 837         (*last_cmd)->next = NULL;
 838         (*last_cmd)->type = JTAG_STATEMOVE;
 839
 840         (*last_cmd)->cmd.statemove = cmd_queue_alloc(sizeof(statemove_command_t));
 841         (*last_cmd)->cmd.statemove->end_state = state;
 842
 843
 844         return ERROR_OK;
 845 }
 846
 847 void jtag_add_pathmove(int num_states, enum tap_state *path)
 848 {
 849         if (jtag_trst == 1)
 850         {
 851                 WARNING("JTAG command queued, while TRST is low (TAP in reset)");
 852                 jtag_error=ERROR_JTAG_TRST_ASSERTED;
 853                 return;
 854         }
 855
 856         if (cmd_queue_end_state == TAP_TLR)
 857                 jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
 858
 859         /* the last state has to be a stable state */
 860         if (tap_move_map[path[num_states - 1]] == -1)
 861         {
 862                 ERROR("TAP path doesn't finish in a stable state");
 863                 jtag_error=ERROR_JTAG_NOT_IMPLEMENTED;
 864                 return;
 865         }
 866
 867         enum tap_state cur_state=cmd_queue_cur_state;
 868         int i;
 869         for (i=0; i<num_states; i++)
 870         {
 871                 if ((tap_transitions[cur_state].low != path[i])&&
 872                                 (tap_transitions[cur_state].high != path[i]))
 873                 {
 874                         ERROR("BUG: %s -> %s isn't a valid TAP transition", tap_state_strings[cur_state], tap_state_strings[path[i]]);
 875                         exit(-1);
 876                 }
 877                 cur_state = path[i];
 878         }
 879
 880         cmd_queue_cur_state = path[num_states - 1];
 881
 882         int retval=interface_jtag_add_pathmove(num_states, path);
 883         if (retval!=ERROR_OK)
 884                 jtag_error=retval;
 885 }
 886
 887
 888 int MINIDRIVER(interface_jtag_add_pathmove)(int num_states, enum tap_state *path)
 889 {
 890         jtag_command_t **last_cmd = jtag_get_last_command_p();
 891         int i;
 892
 893         /* allocate memory for a new list member */
 894         *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
 895         last_comand_pointer = &((*last_cmd)->next);
 896         (*last_cmd)->next = NULL;
 897         (*last_cmd)->type = JTAG_PATHMOVE;
 898
 899         (*last_cmd)->cmd.pathmove = cmd_queue_alloc(sizeof(pathmove_command_t));
 900         (*last_cmd)->cmd.pathmove->num_states = num_states;
 901         (*last_cmd)->cmd.pathmove->path = cmd_queue_alloc(sizeof(enum tap_state) * num_states);
 902
 903         for (i = 0; i < num_states; i++)
 904                 (*last_cmd)->cmd.pathmove->path[i] = path[i];
 905
 906         return ERROR_OK;
 907 }
 908
 909 int MINIDRIVER(interface_jtag_add_runtest)(int num_cycles, enum tap_state state)
 910 {
 911         jtag_command_t **last_cmd = jtag_get_last_command_p();
 912
 913         /* allocate memory for a new list member */
 914         *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
 915         (*last_cmd)->next = NULL;
 916         last_comand_pointer = &((*last_cmd)->next);
 917         (*last_cmd)->type = JTAG_RUNTEST;
 918
 919         (*last_cmd)->cmd.runtest = cmd_queue_alloc(sizeof(runtest_command_t));
 920         (*last_cmd)->cmd.runtest->num_cycles = num_cycles;
 921         (*last_cmd)->cmd.runtest->end_state = state;
 922
 923         return ERROR_OK;
 924 }
 925
 926 void jtag_add_runtest(int num_cycles, enum tap_state state)
 927 {
 928         if (jtag_trst == 1)
 929         {
 930                 WARNING("JTAG command queued, while TRST is low (TAP in reset)");
 931                 jtag_error=ERROR_JTAG_TRST_ASSERTED;
 932                 return;
 933         }
 934
 935         if (state != -1)
 936                 cmd_queue_end_state = state;
 937
 938         if (cmd_queue_end_state == TAP_TLR)
 939                 jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
 940
 941         cmd_queue_cur_state = cmd_queue_end_state;
 942
 943         /* executed by sw or hw fifo */
 944         int retval=interface_jtag_add_runtest(num_cycles, cmd_queue_end_state);
 945         if (retval!=ERROR_OK)
 946                 jtag_error=retval;
 947 }
 948
 949 int jtag_add_reset(int req_trst, int req_srst)
 950 {
 951         int trst_with_tms = 0;
 952         int retval;
 953
 954         if (req_trst == -1)
 955                 req_trst = jtag_trst;
 956
 957         if (req_srst == -1)
 958                 req_srst = jtag_srst;
 959
 960         /* Make sure that jtag_reset_config allows the requested reset */
 961         /* if SRST pulls TRST, we can't fulfill srst == 1 with trst == 0 */
 962         if (((jtag_reset_config & RESET_SRST_PULLS_TRST) && (req_srst == 1)) && (req_trst == 0))
 963         {
 964                 ERROR("requested reset would assert trst");
 965                 return ERROR_JTAG_RESET_WOULD_ASSERT_TRST;
 966         }
 967
 968         /* if TRST pulls SRST, we reset with TAP T-L-R */
 969         if (((jtag_reset_config & RESET_TRST_PULLS_SRST) && (req_trst == 1)) && (req_srst == 0))
 970         {
 971                 req_trst = 0;
 972                 trst_with_tms = 1;
 973         }
 974
 975         if (req_srst && !(jtag_reset_config & RESET_HAS_SRST))
 976         {
 977                 ERROR("requested nSRST assertion, but the current configuration doesn't support this");
 978                 return ERROR_JTAG_RESET_CANT_SRST;
 979         }
 980
 981         if (req_trst && !(jtag_reset_config & RESET_HAS_TRST))
 982         {
 983                 req_trst = 0;
 984                 trst_with_tms = 1;
 985         }
 986
 987         jtag_trst = req_trst;
 988         jtag_srst = req_srst;
 989
 990         retval = interface_jtag_add_reset(req_trst, req_srst);
 991         if (retval!=ERROR_OK)
 992         {
 993                 jtag_error=retval;
 994                 return retval;
 995         }
 996
 997         if (jtag_srst)
 998         {
 999                 DEBUG("SRST line asserted");
1000         }
1001         else
1002         {
1003                 DEBUG("SRST line released");
1004                 if (jtag_nsrst_delay)
1005                         jtag_add_sleep(jtag_nsrst_delay * 1000);
1006         }
1007
1008         if (trst_with_tms)
1009         {
1010                 DEBUG("JTAG reset with tms instead of TRST");
1011                 jtag_add_end_state(TAP_TLR);
1012                 jtag_add_statemove(TAP_TLR);
1013                 jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
1014                 return ERROR_OK;
1015         }
1016
1017         if (jtag_trst)
1018         {
1019                 /* we just asserted nTRST, so we're now in Test-Logic-Reset,
1020                  * and inform possible listeners about this
1021                  */
1022                 DEBUG("TRST line asserted");
1023                 cmd_queue_cur_state = TAP_TLR;
1024                 jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
1025         }
1026         else
1027         {
1028                 /* the nTRST line got deasserted, so we're still in Test-Logic-Reset,
1029                  * but we might want to add a delay to give the TAP time to settle
1030                  */
1031                 DEBUG("Now in TAP_TLR - Test-Logic-Reset(either due to TRST line asserted or tms reset)");
1032                 if (jtag_ntrst_delay)
1033                         jtag_add_sleep(jtag_ntrst_delay * 1000);
1034         }
1035         return ERROR_OK;
1036 }
1037
1038 int MINIDRIVER(interface_jtag_add_reset)(int req_trst, int req_srst)
1039 {
1040         jtag_command_t **last_cmd = jtag_get_last_command_p();
1041
1042         /* allocate memory for a new list member */
1043         *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
1044         (*last_cmd)->next = NULL;
1045         last_comand_pointer = &((*last_cmd)->next);
1046         (*last_cmd)->type = JTAG_RESET;
1047
1048         (*last_cmd)->cmd.reset = cmd_queue_alloc(sizeof(reset_command_t));
1049         (*last_cmd)->cmd.reset->trst = req_trst;
1050         (*last_cmd)->cmd.reset->srst = req_srst;
1051
1052
1053         return ERROR_OK;
1054 }
1055
1056 void jtag_add_end_state(enum tap_state state)
1057 {
1058         cmd_queue_end_state = state;
1059 }
1060
1061 int MINIDRIVER(interface_jtag_add_sleep)(u32 us)
1062 {
1063         jtag_command_t **last_cmd = jtag_get_last_command_p();
1064
1065         /* allocate memory for a new list member */
1066         *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
1067         (*last_cmd)->next = NULL;
1068         last_comand_pointer = &((*last_cmd)->next);
1069         (*last_cmd)->type = JTAG_SLEEP;
1070
1071         (*last_cmd)->cmd.sleep = cmd_queue_alloc(sizeof(sleep_command_t));
1072         (*last_cmd)->cmd.sleep->us = us;
1073
1074         return ERROR_OK;
1075 }
1076
1077 void jtag_add_sleep(u32 us)
1078 {
1079         int retval=interface_jtag_add_sleep(us);
1080         if (retval!=ERROR_OK)
1081                 jtag_error=retval;
1082         return;
1083 }
1084
1085 int jtag_scan_size(scan_command_t *cmd)
1086 {
1087         int bit_count = 0;
1088         int i;
1089
1090         /* count bits in scan command */
1091         for (i = 0; i < cmd->num_fields; i++)
1092         {
1093                 bit_count += cmd->fields[i].num_bits;
1094         }
1095
1096         return bit_count;
1097 }
1098
1099 int jtag_build_buffer(scan_command_t *cmd, u8 **buffer)
1100 {
1101         int bit_count = 0;
1102         int i;
1103
1104         bit_count = jtag_scan_size(cmd);
1105         *buffer = malloc(CEIL(bit_count, 8));
1106
1107         bit_count = 0;
1108
1109         for (i = 0; i < cmd->num_fields; i++)
1110         {
1111                 if (cmd->fields[i].out_value)
1112                 {
1113 #ifdef _DEBUG_JTAG_IO_
1114                         char* char_buf = buf_to_str(cmd->fields[i].out_value, (cmd->fields[i].num_bits > 64) ? 64 : cmd->fields[i].num_bits, 16);
1115 #endif
1116                         buf_set_buf(cmd->fields[i].out_value, 0, *buffer, bit_count, cmd->fields[i].num_bits);
1117 #ifdef _DEBUG_JTAG_IO_
1118                         DEBUG("fields[%i].out_value: 0x%s", i, char_buf);
1119                         free(char_buf);
1120 #endif
1121                 }
1122
1123                 bit_count += cmd->fields[i].num_bits;
1124         }
1125
1126         return bit_count;
1127
1128 }
1129
1130 int jtag_read_buffer(u8 *buffer, scan_command_t *cmd)
1131 {
1132         int i;
1133         int bit_count = 0;
1134         int retval;
1135
1136         /* we return ERROR_OK, unless a check fails, or a handler reports a problem */
1137         retval = ERROR_OK;
1138
1139         for (i = 0; i < cmd->num_fields; i++)
1140         {
1141                 /* if neither in_value nor in_handler
1142                  * are specified we don't have to examine this field
1143                  */
1144                 if (cmd->fields[i].in_value || cmd->fields[i].in_handler)
1145                 {
1146                         int num_bits = cmd->fields[i].num_bits;
1147                         u8 *captured = buf_set_buf(buffer, bit_count, malloc(CEIL(num_bits, 8)), 0, num_bits);
1148
1149 #ifdef _DEBUG_JTAG_IO_
1150                         char *char_buf;
1151
1152                         char_buf = buf_to_str(captured, (num_bits > 64) ? 64 : num_bits, 16);
1153                         DEBUG("fields[%i].in_value: 0x%s", i, char_buf);
1154                         free(char_buf);
1155 #endif
1156
1157                         if (cmd->fields[i].in_value)
1158                         {
1159                                 buf_cpy(captured, cmd->fields[i].in_value, num_bits);
1160
1161                                 if (cmd->fields[i].in_handler)
1162                                 {
1163                                         if (cmd->fields[i].in_handler(cmd->fields[i].in_value, cmd->fields[i].in_handler_priv, cmd->fields+i) != ERROR_OK)
1164                                         {
1165                                                 WARNING("in_handler reported a failed check");
1166                                                 retval = ERROR_JTAG_QUEUE_FAILED;
1167                                         }
1168                                 }
1169                         }
1170
1171                         /* no in_value specified, but a handler takes care of the scanned data */
1172                         if (cmd->fields[i].in_handler && (!cmd->fields[i].in_value))
1173                         {
1174                                 if (cmd->fields[i].in_handler(captured, cmd->fields[i].in_handler_priv, cmd->fields+i) != ERROR_OK)
1175                                 {
1176                                         /* We're going to call the error:handler later, but if the in_handler
1177                                          * reported an error we report this failure upstream
1178                                          */
1179                                         WARNING("in_handler reported a failed check");
1180                                         retval = ERROR_JTAG_QUEUE_FAILED;
1181                                 }
1182                         }
1183
1184                         free(captured);
1185                 }
1186                 bit_count += cmd->fields[i].num_bits;
1187         }
1188
1189         return retval;
1190 }
1191
1192 int jtag_check_value(u8 *captured, void *priv, scan_field_t *field)
1193 {
1194         int retval = ERROR_OK;
1195         int num_bits = field->num_bits;
1196
1197         int compare_failed = 0;
1198
1199         if (field->in_check_mask)
1200                 compare_failed = buf_cmp_mask(captured, field->in_check_value, field->in_check_mask, num_bits);
1201         else
1202                 compare_failed = buf_cmp(captured, field->in_check_value, num_bits);
1203
1204         if (compare_failed)
1205                 {
1206                 /* An error handler could have caught the failing check
1207                  * only report a problem when there wasn't a handler, or if the handler
1208                  * acknowledged the error
1209                  */
1210                 if (compare_failed)
1211                 {
1212                         char *captured_char = buf_to_str(captured, (num_bits > 64) ? 64 : num_bits, 16);
1213                         char *in_check_value_char = buf_to_str(field->in_check_value, (num_bits > 64) ? 64 : num_bits, 16);
1214
1215                         if (field->in_check_mask)
1216                         {
1217                                 char *in_check_mask_char;
1218                                 in_check_mask_char = buf_to_str(field->in_check_mask, (num_bits > 64) ? 64 : num_bits, 16);
1219                                 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);
1220                                 free(in_check_mask_char);
1221                         }
1222                         else
1223                         {
1224                                 WARNING("value captured during scan didn't pass the requested check: captured: 0x%s check_value: 0x%s", captured_char, in_check_value_char);
1225                         }
1226
1227                         free(captured_char);
1228                         free(in_check_value_char);
1229
1230                         retval = ERROR_JTAG_QUEUE_FAILED;
1231                 }
1232
1233         }
1234         return retval;
1235 }
1236
1237 /*
1238   set up checking of this field using the in_handler. The values passed in must be valid until
1239   after jtag_execute() has completed.
1240  */
1241 void jtag_set_check_value(scan_field_t *field, u8 *value, u8 *mask, error_handler_t *in_error_handler)
1242 {
1243         if (value)
1244                 field->in_handler = jtag_check_value;
1245         else
1246                 field->in_handler = NULL;       /* No check, e.g. embeddedice uses value==NULL to indicate no check */
1247         field->in_handler_priv = NULL;  /* this will be filled in at the invocation site to point to the field duplicate */
1248         field->in_check_value = value;
1249         field->in_check_mask = mask;
1250 }
1251
1252 enum scan_type jtag_scan_type(scan_command_t *cmd)
1253 {
1254         int i;
1255         int type = 0;
1256
1257         for (i = 0; i < cmd->num_fields; i++)
1258         {
1259                 if (cmd->fields[i].in_value || cmd->fields[i].in_handler)
1260                         type |= SCAN_IN;
1261                 if (cmd->fields[i].out_value)
1262                         type |= SCAN_OUT;
1263         }
1264
1265         return type;
1266 }
1267
1268 int MINIDRIVER(interface_jtag_execute_queue)(void)
1269 {
1270         int retval;
1271
1272         retval = jtag->execute_queue();
1273
1274         cmd_queue_free();
1275
1276         jtag_command_queue = NULL;
1277         last_comand_pointer = &jtag_command_queue;
1278
1279         return retval;
1280 }
1281
1282 int jtag_execute_queue(void)
1283 {
1284         int retval=interface_jtag_execute_queue();
1285         if (retval==ERROR_OK)
1286         {
1287                 retval=jtag_error;
1288         }
1289         jtag_error=ERROR_OK;
1290         return retval;
1291 }
1292
1293 int jtag_reset_callback(enum jtag_event event, void *priv)
1294 {
1295         jtag_device_t *device = priv;
1296
1297         DEBUG("-");
1298
1299         if (event == JTAG_TRST_ASSERTED)
1300         {
1301                 buf_set_ones(device->cur_instr, device->ir_length);
1302                 device->bypass = 1;
1303         }
1304
1305         return ERROR_OK;
1306 }
1307
1308 void jtag_sleep(u32 us)
1309 {
1310         usleep(us);
1311 }
1312
1313 /* Try to examine chain layout according to IEEE 1149.1 §12
1314  */
1315 int jtag_examine_chain()
1316 {
1317         jtag_device_t *device = jtag_devices;
1318         scan_field_t field;
1319         u8 idcode_buffer[JTAG_MAX_CHAIN_SIZE * 4];
1320         int i;
1321         int bit_count;
1322         int device_count = 0;
1323         u8 zero_check = 0x0;
1324         u8 one_check = 0xff;
1325
1326         field.device = 0;
1327         field.num_bits = sizeof(idcode_buffer) * 8;
1328         field.out_value = idcode_buffer;
1329         field.out_mask = NULL;
1330         field.in_value = idcode_buffer;
1331         field.in_check_value = NULL;
1332         field.in_check_mask = NULL;
1333         field.in_handler = NULL;
1334         field.in_handler_priv = NULL;
1335
1336         for (i = 0; i < JTAG_MAX_CHAIN_SIZE; i++)
1337         {
1338                 buf_set_u32(idcode_buffer, i * 32, 32, 0x000000FF);
1339         }
1340
1341         jtag_add_plain_dr_scan(1, &field, TAP_TLR);
1342         jtag_execute_queue();
1343
1344         for (i = 0; i < JTAG_MAX_CHAIN_SIZE * 4; i++)
1345         {
1346                 zero_check |= idcode_buffer[i];
1347                 one_check &= idcode_buffer[i];
1348         }
1349
1350         /* if there wasn't a single non-zero bit or if all bits were one, the scan isn't valid */
1351         if ((zero_check == 0x00) || (one_check == 0xff))
1352         {
1353                 ERROR("JTAG communication failure, check connection, JTAG interface, target power etc.");
1354                 return ERROR_JTAG_INIT_FAILED;
1355         }
1356
1357         for (bit_count = 0; bit_count < (JTAG_MAX_CHAIN_SIZE * 32) - 31;)
1358         {
1359                 u32 idcode = buf_get_u32(idcode_buffer, bit_count, 32);
1360                 if ((idcode & 1) == 0)
1361                 {
1362                         /* LSB must not be 0, this indicates a device in bypass */
1363                         device_count++;
1364
1365                         bit_count += 1;
1366                 }
1367                 else
1368                 {
1369                         u32 manufacturer;
1370                         u32 part;
1371                         u32 version;
1372
1373                         if (idcode == 0x000000FF)
1374                         {
1375                                 /* End of chain (invalid manufacturer ID) */
1376                                 break;
1377                         }
1378
1379                         if (device)
1380                         {
1381                                 device->idcode = idcode;
1382                                 device = device->next;
1383                         }
1384                         device_count++;
1385
1386                         manufacturer = (idcode & 0xffe) >> 1;
1387                         part = (idcode & 0xffff000) >> 12;
1388                         version = (idcode & 0xf0000000) >> 28;
1389
1390                         INFO("JTAG device found: 0x%8.8x (Manufacturer: 0x%3.3x, Part: 0x%4.4x, Version: 0x%1.1x)",
1391                                 idcode, manufacturer, part, version);
1392
1393                         bit_count += 32;
1394                 }
1395         }
1396
1397         /* see if number of discovered devices matches configuration */
1398         if (device_count != jtag_num_devices)
1399         {
1400                 ERROR("number of discovered devices in JTAG chain (%i) doesn't match configuration (%i)",
1401                                 device_count, jtag_num_devices);
1402                 ERROR("check the config file and ensure proper JTAG communication (connections, speed, ...)");
1403                 return ERROR_JTAG_INIT_FAILED;
1404         }
1405
1406         return ERROR_OK;
1407 }
1408
1409 int jtag_validate_chain()
1410 {
1411         jtag_device_t *device = jtag_devices;
1412         int total_ir_length = 0;
1413         u8 *ir_test = NULL;
1414         scan_field_t field;
1415         int chain_pos = 0;
1416
1417         while (device)
1418         {
1419                 total_ir_length += device->ir_length;
1420                 device = device->next;
1421         }
1422
1423         total_ir_length += 2;
1424         ir_test = malloc(CEIL(total_ir_length, 8));
1425         buf_set_ones(ir_test, total_ir_length);
1426
1427         field.device = 0;
1428         field.num_bits = total_ir_length;
1429         field.out_value = ir_test;
1430         field.out_mask = NULL;
1431         field.in_value = ir_test;
1432         field.in_check_value = NULL;
1433         field.in_check_mask = NULL;
1434         field.in_handler = NULL;
1435         field.in_handler_priv = NULL;
1436
1437         jtag_add_plain_ir_scan(1, &field, TAP_TLR);
1438         jtag_execute_queue();
1439
1440         device = jtag_devices;
1441         while (device)
1442         {
1443                 if (buf_get_u32(ir_test, chain_pos, 2) != 0x1)
1444                 {
1445                         char *cbuf = buf_to_str(ir_test, total_ir_length, 16);
1446                         ERROR("Error validating JTAG scan chain, IR mismatch, scan returned 0x%s", cbuf);
1447                         free(cbuf);
1448                         free(ir_test);
1449                         return ERROR_JTAG_INIT_FAILED;
1450                 }
1451                 chain_pos += device->ir_length;
1452                 device = device->next;
1453         }
1454
1455         if (buf_get_u32(ir_test, chain_pos, 2) != 0x3)
1456         {
1457                 char *cbuf = buf_to_str(ir_test, total_ir_length, 16);
1458                 ERROR("Error validating JTAG scan chain, IR mismatch, scan returned 0x%s", cbuf);
1459                 free(cbuf);
1460                 free(ir_test);
1461                 return ERROR_JTAG_INIT_FAILED;
1462         }
1463
1464         free(ir_test);
1465
1466         return ERROR_OK;
1467 }
1468
1469 int jtag_register_commands(struct command_context_s *cmd_ctx)
1470 {
1471         register_command(cmd_ctx, NULL, "interface", handle_interface_command,
1472                 COMMAND_CONFIG, NULL);
1473         register_command(cmd_ctx, NULL, "jtag_speed", handle_jtag_speed_command,
1474                 COMMAND_ANY, "set jtag speed (if supported) <speed>");
1475         register_command(cmd_ctx, NULL, "jtag_device", handle_jtag_device_command,
1476                 COMMAND_CONFIG, "jtag_device <ir_length> <ir_expected> <ir_mask>");
1477         register_command(cmd_ctx, NULL, "reset_config", handle_reset_config_command,
1478                 COMMAND_CONFIG, NULL);
1479         register_command(cmd_ctx, NULL, "jtag_nsrst_delay", handle_jtag_nsrst_delay_command,
1480                 COMMAND_CONFIG, NULL);
1481         register_command(cmd_ctx, NULL, "jtag_ntrst_delay", handle_jtag_ntrst_delay_command,
1482                 COMMAND_CONFIG, NULL);
1483
1484         register_command(cmd_ctx, NULL, "scan_chain", handle_scan_chain_command,
1485                 COMMAND_EXEC, "print current scan chain configuration");
1486
1487         register_command(cmd_ctx, NULL, "endstate", handle_endstate_command,
1488                 COMMAND_EXEC, "finish JTAG operations in <tap_state>");
1489         register_command(cmd_ctx, NULL, "jtag_reset", handle_jtag_reset_command,
1490                 COMMAND_EXEC, "toggle reset lines <trst> <srst>");
1491         register_command(cmd_ctx, NULL, "runtest", handle_runtest_command,
1492                 COMMAND_EXEC, "move to Run-Test/Idle, and execute <num_cycles>");
1493         register_command(cmd_ctx, NULL, "statemove", handle_statemove_command,
1494                 COMMAND_EXEC, "move to current endstate or [tap_state]");
1495         register_command(cmd_ctx, NULL, "irscan", handle_irscan_command,
1496                 COMMAND_EXEC, "execute IR scan <device> <instr> [dev2] [instr2] ...");
1497         register_command(cmd_ctx, NULL, "drscan", handle_drscan_command,
1498                 COMMAND_EXEC, "execute DR scan <device> <var> [dev2] [var2] ...");
1499
1500         register_command(cmd_ctx, NULL, "verify_ircapture", handle_verify_ircapture_command,
1501                 COMMAND_ANY, "verify value captured during Capture-IR <enable|disable>");
1502         return ERROR_OK;
1503 }
1504
1505 int jtag_interface_init(struct command_context_s *cmd_ctx)
1506 {
1507         if (!jtag_interface)
1508         {
1509                 /* nothing was previously specified by "interface" command */
1510                 ERROR("JTAG interface has to be specified, see \"interface\" command");
1511                 return ERROR_JTAG_INVALID_INTERFACE;
1512         }
1513
1514         if (jtag_interface->init() != ERROR_OK)
1515                 return ERROR_JTAG_INIT_FAILED;
1516
1517         jtag = jtag_interface;
1518         return ERROR_OK;
1519 }
1520
1521 int jtag_init(struct command_context_s *cmd_ctx)
1522 {
1523         int validate_tries = 0;
1524         jtag_device_t *device;
1525
1526         DEBUG("-");
1527
1528         if (!jtag && jtag_interface_init(cmd_ctx) != ERROR_OK)
1529                 return ERROR_JTAG_INIT_FAILED;
1530
1531         device = jtag_devices;
1532         jtag_ir_scan_size = 0;
1533         jtag_num_devices = 0;
1534         while (device != NULL)
1535         {
1536                 jtag_ir_scan_size += device->ir_length;
1537                 jtag_num_devices++;
1538                 device = device->next;
1539         }
1540
1541         jtag_add_statemove(TAP_TLR);
1542         jtag_execute_queue();
1543
1544         /* examine chain first, as this could discover the real chain layout */
1545         if (jtag_examine_chain() != ERROR_OK)
1546         {
1547                 ERROR("trying to validate configured JTAG chain anyway...");
1548         }
1549
1550         while (jtag_validate_chain() != ERROR_OK)
1551         {
1552                 validate_tries++;
1553                 if (validate_tries > 5)
1554                 {
1555                         ERROR("Could not validate JTAG chain, exit");
1556                         return ERROR_JTAG_INVALID_INTERFACE;
1557                 }
1558                 usleep(10000);
1559         }
1560
1561         return ERROR_OK;
1562 }
1563
1564
1565 int handle_interface_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1566 {
1567         int i;
1568
1569         /* check whether the interface is already configured */
1570         if (jtag_interface)
1571         {
1572                 WARNING("Interface already configured, ignoring");
1573                 return ERROR_OK;
1574         }
1575
1576         /* interface name is a mandatory argument */
1577         if (argc < 1 || args[0][0] == '\0')
1578         {
1579                 return ERROR_COMMAND_SYNTAX_ERROR;
1580         }
1581
1582         for (i=0; jtag_interfaces[i]; i++)
1583         {
1584                 if (strcmp(args[0], jtag_interfaces[i]->name) == 0)
1585                 {
1586                         if (jtag_interfaces[i]->register_commands(cmd_ctx) != ERROR_OK)
1587                                 exit(-1);
1588
1589                         jtag_interface = jtag_interfaces[i];
1590                         return ERROR_OK;
1591                 }
1592         }
1593
1594         /* no valid interface was found (i.e. the configuration option,
1595          * didn't match one of the compiled-in interfaces
1596          */
1597         ERROR("No valid jtag interface found (%s)", args[0]);
1598         ERROR("compiled-in jtag interfaces:");
1599         for (i = 0; jtag_interfaces[i]; i++)
1600         {
1601                 ERROR("%i: %s", i, jtag_interfaces[i]->name);
1602         }
1603
1604         return ERROR_JTAG_INVALID_INTERFACE;
1605 }
1606
1607 int handle_jtag_device_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1608 {
1609         jtag_device_t **last_device_p = &jtag_devices;
1610
1611         if (*last_device_p)
1612         {
1613                 while ((*last_device_p)->next)
1614                         last_device_p = &((*last_device_p)->next);
1615                 last_device_p = &((*last_device_p)->next);
1616         }
1617
1618         if (argc < 3)
1619                 return ERROR_OK;
1620
1621         *last_device_p = malloc(sizeof(jtag_device_t));
1622         (*last_device_p)->ir_length = strtoul(args[0], NULL, 0);
1623
1624         (*last_device_p)->expected = malloc((*last_device_p)->ir_length);
1625         buf_set_u32((*last_device_p)->expected, 0, (*last_device_p)->ir_length, strtoul(args[1], NULL, 0));
1626         (*last_device_p)->expected_mask = malloc((*last_device_p)->ir_length);
1627         buf_set_u32((*last_device_p)->expected_mask, 0, (*last_device_p)->ir_length, strtoul(args[2], NULL, 0));
1628
1629         (*last_device_p)->cur_instr = malloc((*last_device_p)->ir_length);
1630         (*last_device_p)->bypass = 1;
1631         buf_set_ones((*last_device_p)->cur_instr, (*last_device_p)->ir_length);
1632
1633         (*last_device_p)->next = NULL;
1634
1635         jtag_register_event_callback(jtag_reset_callback, (*last_device_p));
1636
1637         jtag_num_devices++;
1638
1639         return ERROR_OK;
1640 }
1641
1642 int handle_scan_chain_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1643 {
1644         jtag_device_t *device = jtag_devices;
1645         int device_count = 0;
1646
1647         while (device)
1648         {
1649                 u32 expected, expected_mask, cur_instr;
1650                 expected = buf_get_u32(device->expected, 0, device->ir_length);
1651                 expected_mask = buf_get_u32(device->expected_mask, 0, device->ir_length);
1652                 cur_instr = buf_get_u32(device->cur_instr, 0, device->ir_length);
1653                 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);
1654                 device = device->next;
1655                 device_count++;
1656         }
1657
1658         return ERROR_OK;
1659 }
1660
1661 int handle_reset_config_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1662 {
1663         if (argc >= 1)
1664         {
1665                 if (strcmp(args[0], "none") == 0)
1666                         jtag_reset_config = RESET_NONE;
1667                 else if (strcmp(args[0], "trst_only") == 0)
1668                         jtag_reset_config = RESET_HAS_TRST;
1669                 else if (strcmp(args[0], "srst_only") == 0)
1670                         jtag_reset_config = RESET_HAS_SRST;
1671                 else if (strcmp(args[0], "trst_and_srst") == 0)
1672                         jtag_reset_config = RESET_TRST_AND_SRST;
1673                 else
1674                 {
1675                         ERROR("invalid reset_config argument, defaulting to none");
1676                         jtag_reset_config = RESET_NONE;
1677                         return ERROR_INVALID_ARGUMENTS;
1678                 }
1679         }
1680
1681         if (argc >= 2)
1682         {
1683                 if (strcmp(args[1], "srst_pulls_trst") == 0)
1684                         jtag_reset_config |= RESET_SRST_PULLS_TRST;
1685                 else if (strcmp(args[1], "trst_pulls_srst") == 0)
1686                         jtag_reset_config |= RESET_TRST_PULLS_SRST;
1687                 else if (strcmp(args[1], "combined") == 0)
1688                         jtag_reset_config |= RESET_SRST_PULLS_TRST | RESET_TRST_PULLS_SRST;
1689                 else if (strcmp(args[1], "separate") == 0)
1690                         jtag_reset_config &= ~(RESET_SRST_PULLS_TRST | RESET_TRST_PULLS_SRST);
1691                 else
1692                 {
1693                         ERROR("invalid reset_config argument, defaulting to none");
1694                         jtag_reset_config = RESET_NONE;
1695                         return ERROR_INVALID_ARGUMENTS;
1696                 }
1697         }
1698
1699         if (argc >= 3)
1700         {
1701                 if (strcmp(args[2], "trst_open_drain") == 0)
1702                         jtag_reset_config |= RESET_TRST_OPEN_DRAIN;
1703                 else if (strcmp(args[2], "trst_push_pull") == 0)
1704                         jtag_reset_config &= ~RESET_TRST_OPEN_DRAIN;
1705                 else
1706                 {
1707                         ERROR("invalid reset_config argument, defaulting to none");
1708                         jtag_reset_config = RESET_NONE;
1709                         return ERROR_INVALID_ARGUMENTS;
1710                 }
1711         }
1712
1713         if (argc >= 4)
1714         {
1715                 if (strcmp(args[3], "srst_push_pull") == 0)
1716                         jtag_reset_config |= RESET_SRST_PUSH_PULL;
1717                 else if (strcmp(args[3], "srst_open_drain") == 0)
1718                         jtag_reset_config &= ~RESET_SRST_PUSH_PULL;
1719                 else
1720                 {
1721                         ERROR("invalid reset_config argument, defaulting to none");
1722                         jtag_reset_config = RESET_NONE;
1723                         return ERROR_INVALID_ARGUMENTS;
1724                 }
1725         }
1726
1727         return ERROR_OK;
1728 }
1729
1730 int handle_jtag_nsrst_delay_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1731 {
1732         if (argc < 1)
1733         {
1734                 ERROR("jtag_nsrst_delay <ms> command takes one required argument");
1735                 exit(-1);
1736         }
1737         else
1738         {
1739                 jtag_nsrst_delay = strtoul(args[0], NULL, 0);
1740         }
1741
1742         return ERROR_OK;
1743 }
1744
1745 int handle_jtag_ntrst_delay_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1746 {
1747         if (argc < 1)
1748         {
1749                 ERROR("jtag_ntrst_delay <ms> command takes one required argument");
1750                 exit(-1);
1751         }
1752         else
1753         {
1754                 jtag_ntrst_delay = strtoul(args[0], NULL, 0);
1755         }
1756
1757         return ERROR_OK;
1758 }
1759
1760 int handle_jtag_speed_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1761 {
1762         if (argc == 0)
1763                 command_print(cmd_ctx, "jtag_speed: %i", jtag_speed);
1764
1765         if (argc > 0)
1766         {
1767                 jtag_speed = strtoul(args[0], NULL, 0);
1768                 /* this command can be called during CONFIG,
1769                  * in which case jtag isn't initialized */
1770                 if (jtag)
1771                         jtag->speed(jtag_speed);
1772         }
1773
1774         return ERROR_OK;
1775 }
1776
1777 int handle_endstate_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1778 {
1779         enum tap_state state;
1780
1781         if (argc < 1)
1782         {
1783                 return ERROR_COMMAND_SYNTAX_ERROR;
1784         }
1785         else
1786         {
1787                 for (state = 0; state < 16; state++)
1788                 {
1789                         if (strcmp(args[0], tap_state_strings[state]) == 0)
1790                         {
1791                                 jtag_add_end_state(state);
1792                                 jtag_execute_queue();
1793                         }
1794                 }
1795         }
1796         command_print(cmd_ctx, "current endstate: %s", tap_state_strings[end_state]);
1797
1798         return ERROR_OK;
1799 }
1800
1801 int handle_jtag_reset_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1802 {
1803         int trst = -1;
1804         int srst = -1;
1805
1806         if (argc < 2)
1807         {
1808                 return ERROR_COMMAND_SYNTAX_ERROR;
1809         }
1810
1811         if (args[0][0] == '1')
1812                 trst = 1;
1813         else if (args[0][0] == '0')
1814                 trst = 0;
1815         else
1816         {
1817                 return ERROR_COMMAND_SYNTAX_ERROR;
1818         }
1819
1820         if (args[1][0] == '1')
1821                 srst = 1;
1822         else if (args[1][0] == '0')
1823                 srst = 0;
1824         else
1825         {
1826                 return ERROR_COMMAND_SYNTAX_ERROR;
1827         }
1828
1829         if (!jtag && jtag_interface_init(cmd_ctx) != ERROR_OK)
1830                 return ERROR_JTAG_INIT_FAILED;
1831
1832         jtag_add_reset(trst, srst);
1833         jtag_execute_queue();
1834
1835         return ERROR_OK;
1836 }
1837
1838 int handle_runtest_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1839 {
1840         if (argc < 1)
1841         {
1842                 return ERROR_COMMAND_SYNTAX_ERROR;
1843         }
1844
1845         jtag_add_runtest(strtol(args[0], NULL, 0), -1);
1846         jtag_execute_queue();
1847
1848         return ERROR_OK;
1849
1850 }
1851
1852 int handle_statemove_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1853 {
1854         enum tap_state state;
1855
1856         state = -1;
1857         if (argc == 1)
1858         {
1859                 for (state = 0; state < 16; state++)
1860                 {
1861                         if (strcmp(args[0], tap_state_strings[state]) == 0)
1862                         {
1863                                 break;
1864                         }
1865                 }
1866         }
1867
1868         jtag_add_statemove(state);
1869         jtag_execute_queue();
1870
1871         return ERROR_OK;
1872
1873 }
1874
1875 int handle_irscan_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1876 {
1877         int i;
1878         scan_field_t *fields;
1879
1880         if ((argc < 2) || (argc % 2))
1881         {
1882                 return ERROR_COMMAND_SYNTAX_ERROR;
1883         }
1884
1885         fields = malloc(sizeof(scan_field_t) * argc / 2);
1886
1887         for (i = 0; i < argc / 2; i++)
1888         {
1889                 int device = strtoul(args[i*2], NULL, 0);
1890                 int field_size = jtag_get_device(device)->ir_length;
1891                 fields[i].device = device;
1892                 fields[i].out_value = malloc(CEIL(field_size, 8));
1893                 buf_set_u32(fields[i].out_value, 0, field_size, strtoul(args[i*2+1], NULL, 0));
1894                 fields[i].out_mask = NULL;
1895                 fields[i].in_value = NULL;
1896                 fields[i].in_check_mask = NULL;
1897                 fields[i].in_handler = NULL;
1898                 fields[i].in_handler_priv = NULL;
1899         }
1900
1901         jtag_add_ir_scan(argc / 2, fields, -1);
1902         jtag_execute_queue();
1903
1904         for (i = 0; i < argc / 2; i++)
1905                 free(fields[i].out_value);
1906
1907         free (fields);
1908
1909         return ERROR_OK;
1910 }
1911
1912 int handle_drscan_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1913 {
1914         scan_field_t *fields;
1915         int num_fields = 0;
1916         int field_count = 0;
1917         var_t *var;
1918         int i, j;
1919
1920         if ((argc < 2) || (argc % 2))
1921         {
1922                 return ERROR_COMMAND_SYNTAX_ERROR;
1923         }
1924
1925         for (i = 0; i < argc; i+=2)
1926         {
1927                 var = get_var_by_namenum(args[i+1]);
1928                 if (var)
1929                 {
1930                         num_fields += var->num_fields;
1931                 }
1932                 else
1933                 {
1934                         command_print(cmd_ctx, "variable %s doesn't exist", args[i+1]);
1935                         return ERROR_OK;
1936                 }
1937         }
1938
1939         fields = malloc(sizeof(scan_field_t) * num_fields);
1940
1941         for (i = 0; i < argc; i+=2)
1942         {
1943                 var = get_var_by_namenum(args[i+1]);
1944
1945                 for (j = 0; j < var->num_fields; j++)
1946                 {
1947                         fields[field_count].device = strtol(args[i], NULL, 0);
1948                         fields[field_count].num_bits = var->fields[j].num_bits;
1949                         fields[field_count].out_value = malloc(CEIL(var->fields[j].num_bits, 8));
1950                         buf_set_u32(fields[field_count].out_value, 0, var->fields[j].num_bits, var->fields[j].value);
1951                         fields[field_count].out_mask = NULL;
1952                         fields[field_count].in_value = fields[field_count].out_value;
1953                         fields[field_count].in_check_mask = NULL;
1954                         fields[field_count].in_check_value = NULL;
1955                         fields[field_count].in_handler = field_le_to_host;
1956                         fields[field_count++].in_handler_priv = &(var->fields[j]);
1957                 }
1958         }
1959
1960         jtag_add_dr_scan(num_fields, fields, -1);
1961         jtag_execute_queue();
1962
1963         for (i = 0; i < argc / 2; i++)
1964                 free(fields[i].out_value);
1965
1966         free(fields);
1967
1968         return ERROR_OK;
1969 }
1970
1971 int handle_verify_ircapture_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1972 {
1973         if (argc == 1)
1974         {
1975                 if (strcmp(args[0], "enable") == 0)
1976                 {
1977                         jtag_verify_capture_ir = 1;
1978                 }
1979                 else if (strcmp(args[0], "disable") == 0)
1980                 {
1981                         jtag_verify_capture_ir = 0;
1982                 } else
1983                 {
1984                         return ERROR_COMMAND_SYNTAX_ERROR;
1985                 }
1986         } else if (argc != 0)
1987         {
1988                 return ERROR_COMMAND_SYNTAX_ERROR;
1989         }
1990
1991         command_print(cmd_ctx, "verify Capture-IR is %s", (jtag_verify_capture_ir) ? "enabled": "disabled");
1992
1993         return ERROR_OK;
1994 }