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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 (TLR or TRST)"
 110 };
 111
 112 /* kludge!!!! these are just global variables that the
 113  * interface use internally. They really belong
 114  * inside the drivers, but we don't want to break
 115  * linking the drivers!!!!
 116  */
 117 enum tap_state end_state = TAP_TLR;
 118 enum tap_state cur_state = TAP_TLR;
 119 int jtag_trst = 0;
 120 int jtag_srst = 0;
 121
 122 jtag_command_t *jtag_command_queue = NULL;
 123 jtag_command_t **last_comand_pointer = &jtag_command_queue;
 124 jtag_device_t *jtag_devices = NULL;
 125 int jtag_num_devices = 0;
 126 int jtag_ir_scan_size = 0;
 127 enum reset_types jtag_reset_config = RESET_NONE;
 128 enum tap_state cmd_queue_end_state = TAP_TLR;
 129 enum tap_state cmd_queue_cur_state = TAP_TLR;
 130
 131 int jtag_verify_capture_ir = 1;
 132
 133 /* how long the OpenOCD should wait before attempting JTAG communication after reset lines deasserted (in ms) */
 134 int jtag_nsrst_delay = 0; /* default to no nSRST delay */
 135 int jtag_ntrst_delay = 0; /* default to no nTRST delay */
 136
 137 /* maximum number of JTAG devices expected in the chain
 138  */
 139 #define JTAG_MAX_CHAIN_SIZE 20
 140
 141 /* callbacks to inform high-level handlers about JTAG state changes */
 142 jtag_event_callback_t *jtag_event_callbacks;
 143
 144 /* speed in kHz*/
 145 static int speed1 = 0, speed2 = 0;
 146 /* flag if the kHz speed was defined */
 147 static int hasKHz = 0;
 148
 149 /* jtag interfaces (parport, FTDI-USB, TI-USB, ...)
 150  */
 151
 152 #if BUILD_ECOSBOARD == 1
 153         extern jtag_interface_t eCosBoard_interface;
 154 #endif
 155
 156 #if BUILD_PARPORT == 1
 157         extern jtag_interface_t parport_interface;
 158 #endif
 159
 160 #if BUILD_DUMMY == 1
 161         extern jtag_interface_t dummy_interface;
 162 #endif
 163
 164 #if BUILD_FT2232_FTD2XX == 1
 165         extern jtag_interface_t ft2232_interface;
 166 #endif
 167
 168 #if BUILD_FT2232_LIBFTDI == 1
 169         extern jtag_interface_t ft2232_interface;
 170 #endif
 171
 172 #if BUILD_AMTJTAGACCEL == 1
 173         extern jtag_interface_t amt_jtagaccel_interface;
 174 #endif
 175
 176 #if BUILD_EP93XX == 1
 177         extern jtag_interface_t ep93xx_interface;
 178 #endif
 179
 180 #if BUILD_AT91RM9200 == 1
 181         extern jtag_interface_t at91rm9200_interface;
 182 #endif
 183
 184 #if BUILD_GW16012 == 1
 185         extern jtag_interface_t gw16012_interface;
 186 #endif
 187
 188 #if BUILD_PRESTO_LIBFTDI == 1 || BUILD_PRESTO_FTD2XX == 1
 189         extern jtag_interface_t presto_interface;
 190 #endif
 191
 192 #if BUILD_USBPROG == 1
 193         extern jtag_interface_t usbprog_interface;
 194 #endif
 195
 196 #if BUILD_JLINK == 1
 197         extern jtag_interface_t jlink_interface;
 198 #endif
 199
 200 jtag_interface_t *jtag_interfaces[] = {
 201 #if BUILD_ECOSBOARD == 1
 202         &eCosBoard_interface,
 203 #endif
 204 #if BUILD_PARPORT == 1
 205         &parport_interface,
 206 #endif
 207 #if BUILD_DUMMY == 1
 208         &dummy_interface,
 209 #endif
 210 #if BUILD_FT2232_FTD2XX == 1
 211         &ft2232_interface,
 212 #endif
 213 #if BUILD_FT2232_LIBFTDI == 1
 214         &ft2232_interface,
 215 #endif
 216 #if BUILD_AMTJTAGACCEL == 1
 217         &amt_jtagaccel_interface,
 218 #endif
 219 #if BUILD_EP93XX == 1
 220         &ep93xx_interface,
 221 #endif
 222 #if BUILD_AT91RM9200 == 1
 223         &at91rm9200_interface,
 224 #endif
 225 #if BUILD_GW16012 == 1
 226         &gw16012_interface,
 227 #endif
 228 #if BUILD_PRESTO_LIBFTDI == 1 || BUILD_PRESTO_FTD2XX == 1
 229         &presto_interface,
 230 #endif
 231 #if BUILD_USBPROG == 1
 232         &usbprog_interface,
 233 #endif
 234 #if BUILD_JLINK == 1
 235         &jlink_interface,
 236 #endif
 237         NULL,
 238 };
 239
 240 jtag_interface_t *jtag = NULL;
 241
 242 /* configuration */
 243 jtag_interface_t *jtag_interface = NULL;
 244 int jtag_speed = 0;
 245 int jtag_speed_post_reset = 0;
 246
 247
 248 /* forward declarations */
 249 void jtag_add_pathmove(int num_states, enum tap_state *path);
 250 void jtag_add_runtest(int num_cycles, enum tap_state endstate);
 251 void jtag_add_end_state(enum tap_state endstate);
 252 void jtag_add_sleep(u32 us);
 253 int jtag_execute_queue(void);
 254 int jtag_cancel_queue(void);
 255
 256 /* jtag commands */
 257 int handle_interface_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 258 int handle_jtag_speed_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 259 int handle_jtag_khz_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 260 int handle_jtag_device_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 261 int handle_reset_config_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 262 int handle_jtag_nsrst_delay_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 263 int handle_jtag_ntrst_delay_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 264
 265 int handle_scan_chain_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 266
 267 int handle_endstate_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 268 int handle_jtag_reset_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 269 int handle_runtest_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 270 int handle_irscan_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 271 int handle_drscan_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 272
 273 int handle_verify_ircapture_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 274
 275 int jtag_register_event_callback(int (*callback)(enum jtag_event event, void *priv), void *priv)
 276 {
 277         jtag_event_callback_t **callbacks_p = &jtag_event_callbacks;
 278
 279         if (callback == NULL)
 280         {
 281                 return ERROR_INVALID_ARGUMENTS;
 282         }
 283
 284         if (*callbacks_p)
 285         {
 286                 while ((*callbacks_p)->next)
 287                         callbacks_p = &((*callbacks_p)->next);
 288                 callbacks_p = &((*callbacks_p)->next);
 289         }
 290
 291         (*callbacks_p) = malloc(sizeof(jtag_event_callback_t));
 292         (*callbacks_p)->callback = callback;
 293         (*callbacks_p)->priv = priv;
 294         (*callbacks_p)->next = NULL;
 295
 296         return ERROR_OK;
 297 }
 298
 299 int jtag_unregister_event_callback(int (*callback)(enum jtag_event event, void *priv))
 300 {
 301         jtag_event_callback_t **callbacks_p = &jtag_event_callbacks;
 302
 303         if (callback == NULL)
 304         {
 305                 return ERROR_INVALID_ARGUMENTS;
 306         }
 307
 308         while (*callbacks_p)
 309         {
 310                 jtag_event_callback_t **next = &((*callbacks_p)->next);
 311                 if ((*callbacks_p)->callback == callback)
 312                 {
 313                         free(*callbacks_p);
 314                         *callbacks_p = *next;
 315                 }
 316                 callbacks_p = next;
 317         }
 318
 319         return ERROR_OK;
 320 }
 321
 322 int jtag_call_event_callbacks(enum jtag_event event)
 323 {
 324         jtag_event_callback_t *callback = jtag_event_callbacks;
 325
 326         LOG_DEBUG("jtag event: %s", jtag_event_strings[event]);
 327
 328         while (callback)
 329         {
 330                 callback->callback(event, callback->priv);
 331                 callback = callback->next;
 332         }
 333
 334         return ERROR_OK;
 335 }
 336
 337 /* returns a pointer to the pointer of the last command in queue
 338  * this may be a pointer to the root pointer (jtag_command_queue)
 339  * or to the next member of the last but one command
 340  */
 341 jtag_command_t** jtag_get_last_command_p(void)
 342 {
 343 /*      jtag_command_t *cmd = jtag_command_queue;
 344
 345         if (cmd)
 346                 while (cmd->next)
 347                         cmd = cmd->next;
 348         else
 349                 return &jtag_command_queue;
 350
 351         return &cmd->next;*/
 352
 353         return last_comand_pointer;
 354 }
 355
 356 /* returns a pointer to the n-th device in the scan chain */
 357 jtag_device_t* jtag_get_device(int num)
 358 {
 359         jtag_device_t *device = jtag_devices;
 360         int i = 0;
 361
 362         while (device)
 363         {
 364                 if (num == i)
 365                         return device;
 366                 device = device->next;
 367                 i++;
 368         }
 369
 370         LOG_ERROR("jtag device number %d not defined", num);
 371         exit(-1);
 372 }
 373
 374 void* cmd_queue_alloc(size_t size)
 375 {
 376         cmd_queue_page_t **p_page = &cmd_queue_pages;
 377         int offset;
 378         u8 *t;
 379
 380         if (*p_page)
 381         {
 382                 while ((*p_page)->next)
 383                         p_page = &((*p_page)->next);
 384                 if (CMD_QUEUE_PAGE_SIZE - (*p_page)->used < size)
 385                         p_page = &((*p_page)->next);
 386         }
 387
 388         if (!*p_page)
 389         {
 390                 *p_page = malloc(sizeof(cmd_queue_page_t));
 391                 (*p_page)->used = 0;
 392                 (*p_page)->address = malloc(CMD_QUEUE_PAGE_SIZE);
 393                 (*p_page)->next = NULL;
 394         }
 395
 396         offset = (*p_page)->used;
 397         (*p_page)->used += size;
 398
 399         t=(u8 *)((*p_page)->address);
 400         return t + offset;
 401 }
 402
 403 void cmd_queue_free()
 404 {
 405         cmd_queue_page_t *page = cmd_queue_pages;
 406
 407         while (page)
 408         {
 409                 cmd_queue_page_t *last = page;
 410                 free(page->address);
 411                 page = page->next;
 412                 free(last);
 413         }
 414
 415         cmd_queue_pages = NULL;
 416 }
 417
 418 static void jtag_prelude1()
 419 {
 420         if (jtag_trst == 1)
 421         {
 422                 LOG_WARNING("JTAG command queued, while TRST is low (TAP in reset)");
 423                 jtag_error=ERROR_JTAG_TRST_ASSERTED;
 424                 return;
 425         }
 426
 427         if (cmd_queue_end_state == TAP_TLR)
 428                 jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
 429 }
 430
 431 static void jtag_prelude(enum tap_state state)
 432 {
 433         jtag_prelude1();
 434
 435         if (state != -1)
 436                 jtag_add_end_state(state);
 437
 438         cmd_queue_cur_state = cmd_queue_end_state;
 439 }
 440
 441 void jtag_add_ir_scan(int num_fields, scan_field_t *fields, enum tap_state state)
 442 {
 443         int retval;
 444
 445         jtag_prelude(state);
 446
 447         retval=interface_jtag_add_ir_scan(num_fields, fields, cmd_queue_end_state);
 448         if (retval!=ERROR_OK)
 449                 jtag_error=retval;
 450 }
 451
 452 int MINIDRIVER(interface_jtag_add_ir_scan)(int num_fields, scan_field_t *fields, enum tap_state state)
 453 {
 454         jtag_command_t **last_cmd;
 455         jtag_device_t *device;
 456         int i, j;
 457         int scan_size = 0;
 458
 459
 460         last_cmd = jtag_get_last_command_p();
 461
 462         /* allocate memory for a new list member */
 463         *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
 464         (*last_cmd)->next = NULL;
 465         last_comand_pointer = &((*last_cmd)->next);
 466         (*last_cmd)->type = JTAG_SCAN;
 467
 468         /* allocate memory for ir scan command */
 469         (*last_cmd)->cmd.scan = cmd_queue_alloc(sizeof(scan_command_t));
 470         (*last_cmd)->cmd.scan->ir_scan = 1;
 471         (*last_cmd)->cmd.scan->num_fields = jtag_num_devices;   /* one field per device */
 472         (*last_cmd)->cmd.scan->fields = cmd_queue_alloc(jtag_num_devices * sizeof(scan_field_t));
 473         (*last_cmd)->cmd.scan->end_state = state;
 474
 475         for (i = 0; i < jtag_num_devices; i++)
 476         {
 477                 int found = 0;
 478                 device = jtag_get_device(i);
 479                 scan_size = device->ir_length;
 480                 (*last_cmd)->cmd.scan->fields[i].device = i;
 481                 (*last_cmd)->cmd.scan->fields[i].num_bits = scan_size;
 482                 (*last_cmd)->cmd.scan->fields[i].in_value = NULL;
 483                 (*last_cmd)->cmd.scan->fields[i].in_handler = NULL;     /* disable verification by default */
 484
 485                 /* search the list */
 486                 for (j = 0; j < num_fields; j++)
 487                 {
 488                         if (i == fields[j].device)
 489                         {
 490                                 found = 1;
 491                                 (*last_cmd)->cmd.scan->fields[i].out_value = buf_cpy(fields[j].out_value, cmd_queue_alloc(CEIL(scan_size, 8)), scan_size);
 492                                 (*last_cmd)->cmd.scan->fields[i].out_mask = buf_cpy(fields[j].out_mask, cmd_queue_alloc(CEIL(scan_size, 8)), scan_size);
 493
 494                                 if (jtag_verify_capture_ir)
 495                                 {
 496                                         if (fields[j].in_handler==NULL)
 497                                         {
 498                                                 jtag_set_check_value((*last_cmd)->cmd.scan->fields+i, device->expected, device->expected_mask, NULL);
 499                                         } else
 500                                         {
 501                                                 (*last_cmd)->cmd.scan->fields[i].in_handler = fields[j].in_handler;
 502                                                 (*last_cmd)->cmd.scan->fields[i].in_handler_priv = fields[j].in_handler_priv;
 503                                                 (*last_cmd)->cmd.scan->fields[i].in_check_value = device->expected;
 504                                                 (*last_cmd)->cmd.scan->fields[i].in_check_mask = device->expected_mask;
 505                                         }
 506                                 }
 507
 508                                 device->bypass = 0;
 509                                 break;
 510                         }
 511                 }
 512
 513                 if (!found)
 514                 {
 515                         /* if a device isn't listed, set it to BYPASS */
 516                         (*last_cmd)->cmd.scan->fields[i].out_value = buf_set_ones(cmd_queue_alloc(CEIL(scan_size, 8)), scan_size);
 517                         (*last_cmd)->cmd.scan->fields[i].out_mask = NULL;
 518                         device->bypass = 1;
 519
 520                 }
 521
 522                 /* update device information */
 523                 buf_cpy((*last_cmd)->cmd.scan->fields[i].out_value, jtag_get_device(i)->cur_instr, scan_size);
 524         }
 525
 526         return ERROR_OK;
 527 }
 528
 529 void jtag_add_plain_ir_scan(int num_fields, scan_field_t *fields, enum tap_state state)
 530 {
 531         int retval;
 532
 533         jtag_prelude(state);
 534
 535         retval=interface_jtag_add_plain_ir_scan(num_fields, fields, cmd_queue_end_state);
 536         if (retval!=ERROR_OK)
 537                 jtag_error=retval;
 538 }
 539
 540 int MINIDRIVER(interface_jtag_add_plain_ir_scan)(int num_fields, scan_field_t *fields, enum tap_state state)
 541 {
 542         int i;
 543         jtag_command_t **last_cmd;
 544
 545         last_cmd = jtag_get_last_command_p();
 546
 547         /* allocate memory for a new list member */
 548         *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
 549         (*last_cmd)->next = NULL;
 550         last_comand_pointer = &((*last_cmd)->next);
 551         (*last_cmd)->type = JTAG_SCAN;
 552
 553         /* allocate memory for ir scan command */
 554         (*last_cmd)->cmd.scan = cmd_queue_alloc(sizeof(scan_command_t));
 555         (*last_cmd)->cmd.scan->ir_scan = 1;
 556         (*last_cmd)->cmd.scan->num_fields = num_fields;
 557         (*last_cmd)->cmd.scan->fields = cmd_queue_alloc(num_fields * sizeof(scan_field_t));
 558         (*last_cmd)->cmd.scan->end_state = state;
 559
 560         for (i = 0; i < num_fields; i++)
 561         {
 562                 int num_bits = fields[i].num_bits;
 563                 int num_bytes = CEIL(fields[i].num_bits, 8);
 564                 (*last_cmd)->cmd.scan->fields[i].device = fields[i].device;
 565                 (*last_cmd)->cmd.scan->fields[i].num_bits = num_bits;
 566                 (*last_cmd)->cmd.scan->fields[i].out_value = buf_cpy(fields[i].out_value, cmd_queue_alloc(num_bytes), num_bits);
 567                 (*last_cmd)->cmd.scan->fields[i].out_mask = buf_cpy(fields[i].out_mask, cmd_queue_alloc(num_bytes), num_bits);
 568                 (*last_cmd)->cmd.scan->fields[i].in_value = fields[i].in_value;
 569                 (*last_cmd)->cmd.scan->fields[i].in_check_value = fields[i].in_check_value;
 570                 (*last_cmd)->cmd.scan->fields[i].in_check_mask = fields[i].in_check_mask;
 571                 (*last_cmd)->cmd.scan->fields[i].in_handler = NULL;
 572                 (*last_cmd)->cmd.scan->fields[i].in_handler_priv = NULL;
 573         }
 574         return ERROR_OK;
 575 }
 576
 577 void jtag_add_dr_scan(int num_fields, scan_field_t *fields, enum tap_state state)
 578 {
 579         int retval;
 580
 581         jtag_prelude(state);
 582
 583         retval=interface_jtag_add_dr_scan(num_fields, fields, cmd_queue_end_state);
 584         if (retval!=ERROR_OK)
 585                 jtag_error=retval;
 586 }
 587
 588 int MINIDRIVER(interface_jtag_add_dr_scan)(int num_fields, scan_field_t *fields, enum tap_state state)
 589 {
 590         int i, j;
 591         int bypass_devices = 0;
 592         int field_count = 0;
 593         int scan_size;
 594
 595         jtag_command_t **last_cmd = jtag_get_last_command_p();
 596         jtag_device_t *device = jtag_devices;
 597
 598         /* count devices in bypass */
 599         while (device)
 600         {
 601                 if (device->bypass)
 602                         bypass_devices++;
 603                 device = device->next;
 604         }
 605
 606         /* allocate memory for a new list member */
 607         *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
 608         last_comand_pointer = &((*last_cmd)->next);
 609         (*last_cmd)->next = NULL;
 610         (*last_cmd)->type = JTAG_SCAN;
 611
 612         /* allocate memory for dr scan command */
 613         (*last_cmd)->cmd.scan = cmd_queue_alloc(sizeof(scan_command_t));
 614         (*last_cmd)->cmd.scan->ir_scan = 0;
 615         (*last_cmd)->cmd.scan->num_fields = num_fields + bypass_devices;
 616         (*last_cmd)->cmd.scan->fields = cmd_queue_alloc((num_fields + bypass_devices) * sizeof(scan_field_t));
 617         (*last_cmd)->cmd.scan->end_state = state;
 618
 619         for (i = 0; i < jtag_num_devices; i++)
 620         {
 621                 int found = 0;
 622                 (*last_cmd)->cmd.scan->fields[field_count].device = i;
 623
 624                 for (j = 0; j < num_fields; j++)
 625                 {
 626                         if (i == fields[j].device)
 627                         {
 628                                 found = 1;
 629                                 scan_size = fields[j].num_bits;
 630                                 (*last_cmd)->cmd.scan->fields[field_count].num_bits = scan_size;
 631                                 (*last_cmd)->cmd.scan->fields[field_count].out_value = buf_cpy(fields[j].out_value, cmd_queue_alloc(CEIL(scan_size, 8)), scan_size);
 632                                 (*last_cmd)->cmd.scan->fields[field_count].out_mask = buf_cpy(fields[j].out_mask, cmd_queue_alloc(CEIL(scan_size, 8)), scan_size);
 633                                 (*last_cmd)->cmd.scan->fields[field_count].in_value = fields[j].in_value;
 634                                 (*last_cmd)->cmd.scan->fields[field_count].in_check_value = fields[j].in_check_value;
 635                                 (*last_cmd)->cmd.scan->fields[field_count].in_check_mask = fields[j].in_check_mask;
 636                                 (*last_cmd)->cmd.scan->fields[field_count].in_handler = fields[j].in_handler;
 637                                 (*last_cmd)->cmd.scan->fields[field_count++].in_handler_priv = fields[j].in_handler_priv;
 638                         }
 639                 }
 640                 if (!found)
 641                 {
 642 #ifdef _DEBUG_JTAG_IO_
 643                         /* if a device isn't listed, the BYPASS register should be selected */
 644                         if (!jtag_get_device(i)->bypass)
 645                         {
 646                                 LOG_ERROR("BUG: no scan data for a device not in BYPASS");
 647                                 exit(-1);
 648                         }
 649 #endif
 650                         /* program the scan field to 1 bit length, and ignore it's value */
 651                         (*last_cmd)->cmd.scan->fields[field_count].num_bits = 1;
 652                         (*last_cmd)->cmd.scan->fields[field_count].out_value = NULL;
 653                         (*last_cmd)->cmd.scan->fields[field_count].out_mask = NULL;
 654                         (*last_cmd)->cmd.scan->fields[field_count].in_value = NULL;
 655                         (*last_cmd)->cmd.scan->fields[field_count].in_check_value = NULL;
 656                         (*last_cmd)->cmd.scan->fields[field_count].in_check_mask = NULL;
 657                         (*last_cmd)->cmd.scan->fields[field_count].in_handler = NULL;
 658                         (*last_cmd)->cmd.scan->fields[field_count++].in_handler_priv = NULL;
 659                 }
 660                 else
 661                 {
 662 #ifdef _DEBUG_JTAG_IO_
 663                         /* if a device is listed, the BYPASS register must not be selected */
 664                         if (jtag_get_device(i)->bypass)
 665                         {
 666                                 LOG_ERROR("BUG: scan data for a device in BYPASS");
 667                                 exit(-1);
 668                         }
 669 #endif
 670                 }
 671         }
 672         return ERROR_OK;
 673 }
 674
 675 void MINIDRIVER(interface_jtag_add_dr_out)(int device_num,
 676                 int num_fields,
 677                 const int *num_bits,
 678                 const u32 *value,
 679                 enum tap_state end_state)
 680 {
 681         int i;
 682         int field_count = 0;
 683         int scan_size;
 684         int bypass_devices = 0;
 685
 686         jtag_command_t **last_cmd = jtag_get_last_command_p();
 687         jtag_device_t *device = jtag_devices;
 688         /* count devices in bypass */
 689         while (device)
 690         {
 691                 if (device->bypass)
 692                         bypass_devices++;
 693                 device = device->next;
 694         }
 695
 696         /* allocate memory for a new list member */
 697         *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
 698         last_comand_pointer = &((*last_cmd)->next);
 699         (*last_cmd)->next = NULL;
 700         (*last_cmd)->type = JTAG_SCAN;
 701
 702         /* allocate memory for dr scan command */
 703         (*last_cmd)->cmd.scan = cmd_queue_alloc(sizeof(scan_command_t));
 704         (*last_cmd)->cmd.scan->ir_scan = 0;
 705         (*last_cmd)->cmd.scan->num_fields = num_fields + bypass_devices;
 706         (*last_cmd)->cmd.scan->fields = cmd_queue_alloc((num_fields + bypass_devices) * sizeof(scan_field_t));
 707         (*last_cmd)->cmd.scan->end_state = end_state;
 708
 709         for (i = 0; i < jtag_num_devices; i++)
 710         {
 711                 (*last_cmd)->cmd.scan->fields[field_count].device = i;
 712
 713                 if (i == device_num)
 714                 {
 715                         int j;
 716 #ifdef _DEBUG_JTAG_IO_
 717                         /* if a device is listed, the BYPASS register must not be selected */
 718                         if (jtag_get_device(i)->bypass)
 719                         {
 720                                 LOG_ERROR("BUG: scan data for a device in BYPASS");
 721                                 exit(-1);
 722                         }
 723 #endif
 724                         for (j = 0; j < num_fields; j++)
 725                         {
 726                                 u8 out_value[4];
 727                                 scan_size = num_bits[j];
 728                                 buf_set_u32(out_value, 0, scan_size, value[j]);
 729                                 (*last_cmd)->cmd.scan->fields[field_count].num_bits = scan_size;
 730                                 (*last_cmd)->cmd.scan->fields[field_count].out_value = buf_cpy(out_value, cmd_queue_alloc(CEIL(scan_size, 8)), scan_size);
 731                                 (*last_cmd)->cmd.scan->fields[field_count].out_mask = NULL;
 732                                 (*last_cmd)->cmd.scan->fields[field_count].in_value = NULL;
 733                                 (*last_cmd)->cmd.scan->fields[field_count].in_check_value = NULL;
 734                                 (*last_cmd)->cmd.scan->fields[field_count].in_check_mask = NULL;
 735                                 (*last_cmd)->cmd.scan->fields[field_count].in_handler = NULL;
 736                                 (*last_cmd)->cmd.scan->fields[field_count++].in_handler_priv = NULL;
 737                         }
 738                 } else
 739                 {
 740 #ifdef _DEBUG_JTAG_IO_
 741                         /* if a device isn't listed, the BYPASS register should be selected */
 742                         if (!jtag_get_device(i)->bypass)
 743                         {
 744                                 LOG_ERROR("BUG: no scan data for a device not in BYPASS");
 745                                 exit(-1);
 746                         }
 747 #endif
 748                         /* program the scan field to 1 bit length, and ignore it's value */
 749                         (*last_cmd)->cmd.scan->fields[field_count].num_bits = 1;
 750                         (*last_cmd)->cmd.scan->fields[field_count].out_value = NULL;
 751                         (*last_cmd)->cmd.scan->fields[field_count].out_mask = NULL;
 752                         (*last_cmd)->cmd.scan->fields[field_count].in_value = NULL;
 753                         (*last_cmd)->cmd.scan->fields[field_count].in_check_value = NULL;
 754                         (*last_cmd)->cmd.scan->fields[field_count].in_check_mask = NULL;
 755                         (*last_cmd)->cmd.scan->fields[field_count].in_handler = NULL;
 756                         (*last_cmd)->cmd.scan->fields[field_count++].in_handler_priv = NULL;
 757                 }
 758         }
 759 }
 760
 761
 762
 763
 764 void jtag_add_plain_dr_scan(int num_fields, scan_field_t *fields, enum tap_state state)
 765 {
 766         int retval;
 767
 768         jtag_prelude(state);
 769
 770         retval=interface_jtag_add_plain_dr_scan(num_fields, fields, cmd_queue_end_state);
 771         if (retval!=ERROR_OK)
 772                 jtag_error=retval;
 773 }
 774
 775 int MINIDRIVER(interface_jtag_add_plain_dr_scan)(int num_fields, scan_field_t *fields, enum tap_state state)
 776 {
 777         int i;
 778         jtag_command_t **last_cmd = jtag_get_last_command_p();
 779
 780         /* allocate memory for a new list member */
 781         *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
 782         last_comand_pointer = &((*last_cmd)->next);
 783         (*last_cmd)->next = NULL;
 784         (*last_cmd)->type = JTAG_SCAN;
 785
 786         /* allocate memory for scan command */
 787         (*last_cmd)->cmd.scan = cmd_queue_alloc(sizeof(scan_command_t));
 788         (*last_cmd)->cmd.scan->ir_scan = 0;
 789         (*last_cmd)->cmd.scan->num_fields = num_fields;
 790         (*last_cmd)->cmd.scan->fields = cmd_queue_alloc(num_fields * sizeof(scan_field_t));
 791         (*last_cmd)->cmd.scan->end_state = state;
 792
 793         for (i = 0; i < num_fields; i++)
 794         {
 795                 int num_bits = fields[i].num_bits;
 796                 int num_bytes = CEIL(fields[i].num_bits, 8);
 797                 (*last_cmd)->cmd.scan->fields[i].device = fields[i].device;
 798                 (*last_cmd)->cmd.scan->fields[i].num_bits = num_bits;
 799                 (*last_cmd)->cmd.scan->fields[i].out_value = buf_cpy(fields[i].out_value, cmd_queue_alloc(num_bytes), num_bits);
 800                 (*last_cmd)->cmd.scan->fields[i].out_mask = buf_cpy(fields[i].out_mask, cmd_queue_alloc(num_bytes), num_bits);
 801                 (*last_cmd)->cmd.scan->fields[i].in_value = fields[i].in_value;
 802                 (*last_cmd)->cmd.scan->fields[i].in_check_value = fields[i].in_check_value;
 803                 (*last_cmd)->cmd.scan->fields[i].in_check_mask = fields[i].in_check_mask;
 804                 (*last_cmd)->cmd.scan->fields[i].in_handler = fields[i].in_handler;
 805                 (*last_cmd)->cmd.scan->fields[i].in_handler_priv = fields[i].in_handler_priv;
 806         }
 807
 808         return ERROR_OK;
 809 }
 810
 811 void jtag_add_tlr()
 812 {
 813         jtag_prelude(TAP_TLR);
 814
 815         int retval;
 816         retval=interface_jtag_add_tlr();
 817         if (retval!=ERROR_OK)
 818                 jtag_error=retval;
 819 }
 820
 821 int MINIDRIVER(interface_jtag_add_tlr)()
 822 {
 823         enum tap_state state = TAP_TLR;
 824         jtag_command_t **last_cmd = jtag_get_last_command_p();
 825
 826         /* allocate memory for a new list member */
 827         *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
 828         last_comand_pointer = &((*last_cmd)->next);
 829         (*last_cmd)->next = NULL;
 830         (*last_cmd)->type = JTAG_STATEMOVE;
 831
 832         (*last_cmd)->cmd.statemove = cmd_queue_alloc(sizeof(statemove_command_t));
 833         (*last_cmd)->cmd.statemove->end_state = state;
 834
 835
 836         return ERROR_OK;
 837 }
 838
 839 void jtag_add_pathmove(int num_states, enum tap_state *path)
 840 {
 841         enum tap_state cur_state=cmd_queue_cur_state;
 842         int i;
 843         int retval;
 844
 845         /* the last state has to be a stable state */
 846         if (tap_move_map[path[num_states - 1]] == -1)
 847         {
 848                 LOG_ERROR("BUG: TAP path doesn't finish in a stable state");
 849                 exit(-1);
 850         }
 851
 852         for (i=0; i<num_states; i++)
 853         {
 854                 if ((tap_transitions[cur_state].low != path[i])&&
 855                                 (tap_transitions[cur_state].high != path[i]))
 856                 {
 857                         LOG_ERROR("BUG: %s -> %s isn't a valid TAP transition", tap_state_strings[cur_state], tap_state_strings[path[i]]);
 858                         exit(-1);
 859                 }
 860                 cur_state = path[i];
 861         }
 862
 863         jtag_prelude1();
 864
 865         cmd_queue_cur_state = path[num_states - 1];
 866
 867         retval=interface_jtag_add_pathmove(num_states, path);
 868         if (retval!=ERROR_OK)
 869                 jtag_error=retval;
 870 }
 871
 872
 873 int MINIDRIVER(interface_jtag_add_pathmove)(int num_states, enum tap_state *path)
 874 {
 875         jtag_command_t **last_cmd = jtag_get_last_command_p();
 876         int i;
 877
 878         /* allocate memory for a new list member */
 879         *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
 880         last_comand_pointer = &((*last_cmd)->next);
 881         (*last_cmd)->next = NULL;
 882         (*last_cmd)->type = JTAG_PATHMOVE;
 883
 884         (*last_cmd)->cmd.pathmove = cmd_queue_alloc(sizeof(pathmove_command_t));
 885         (*last_cmd)->cmd.pathmove->num_states = num_states;
 886         (*last_cmd)->cmd.pathmove->path = cmd_queue_alloc(sizeof(enum tap_state) * num_states);
 887
 888         for (i = 0; i < num_states; i++)
 889                 (*last_cmd)->cmd.pathmove->path[i] = path[i];
 890
 891         return ERROR_OK;
 892 }
 893
 894 int MINIDRIVER(interface_jtag_add_runtest)(int num_cycles, enum tap_state state)
 895 {
 896         jtag_command_t **last_cmd = jtag_get_last_command_p();
 897
 898         /* allocate memory for a new list member */
 899         *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
 900         (*last_cmd)->next = NULL;
 901         last_comand_pointer = &((*last_cmd)->next);
 902         (*last_cmd)->type = JTAG_RUNTEST;
 903
 904         (*last_cmd)->cmd.runtest = cmd_queue_alloc(sizeof(runtest_command_t));
 905         (*last_cmd)->cmd.runtest->num_cycles = num_cycles;
 906         (*last_cmd)->cmd.runtest->end_state = state;
 907
 908         return ERROR_OK;
 909 }
 910
 911 void jtag_add_runtest(int num_cycles, enum tap_state state)
 912 {
 913         int retval;
 914
 915         jtag_prelude(state);
 916
 917         /* executed by sw or hw fifo */
 918         retval=interface_jtag_add_runtest(num_cycles, cmd_queue_end_state);
 919         if (retval!=ERROR_OK)
 920                 jtag_error=retval;
 921 }
 922
 923 void jtag_add_reset(int req_tlr_or_trst, int req_srst)
 924 {
 925         int trst_with_tlr = 0;
 926         int retval;
 927
 928         /* FIX!!! there are *many* different cases here. A better
 929          * approach is needed for legal combinations of transitions...
 930          */
 931         if ((jtag_reset_config & RESET_HAS_SRST)&&
 932                         (jtag_reset_config & RESET_HAS_TRST)&&
 933                         ((jtag_reset_config & RESET_SRST_PULLS_TRST)==0))
 934         {
 935                 if (((req_tlr_or_trst&&!jtag_trst)||
 936                                 (!req_tlr_or_trst&&jtag_trst))&&
 937                                 ((req_srst&&!jtag_srst)||
 938                                                 (!req_srst&&jtag_srst)))
 939                 {
 940                         /* FIX!!! srst_pulls_trst allows 1,1 => 0,0 transition.... */
 941                         //LOG_ERROR("BUG: transition of req_tlr_or_trst and req_srst in the same jtag_add_reset() call is undefined");
 942                 }
 943         }
 944
 945         /* Make sure that jtag_reset_config allows the requested reset */
 946         /* if SRST pulls TRST, we can't fulfill srst == 1 with trst == 0 */
 947         if (((jtag_reset_config & RESET_SRST_PULLS_TRST) && (req_srst == 1)) && (!req_tlr_or_trst))
 948         {
 949                 LOG_ERROR("BUG: requested reset would assert trst");
 950                 jtag_error=ERROR_FAIL;
 951                 return;
 952         }
 953
 954         /* if TRST pulls SRST, we reset with TAP T-L-R */
 955         if (((jtag_reset_config & RESET_TRST_PULLS_SRST) && (req_tlr_or_trst)) && (req_srst == 0))
 956         {
 957                 trst_with_tlr = 1;
 958         }
 959
 960         if (req_srst && !(jtag_reset_config & RESET_HAS_SRST))
 961         {
 962                 LOG_ERROR("BUG: requested SRST assertion, but the current configuration doesn't support this");
 963                 jtag_error=ERROR_FAIL;
 964                 return;
 965         }
 966
 967         if (req_tlr_or_trst)
 968         {
 969                 if (!trst_with_tlr && (jtag_reset_config & RESET_HAS_TRST))
 970                 {
 971                         jtag_trst = 1;
 972                 } else
 973                 {
 974                         trst_with_tlr = 1;
 975                 }
 976         } else
 977         {
 978                 jtag_trst = 0;
 979         }
 980
 981         jtag_srst = req_srst;
 982
 983         retval = interface_jtag_add_reset(jtag_trst, jtag_srst);
 984         if (retval!=ERROR_OK)
 985         {
 986                 jtag_error=retval;
 987                 return;
 988         }
 989
 990         if (jtag_srst)
 991         {
 992                 LOG_DEBUG("SRST line asserted");
 993         }
 994         else
 995         {
 996                 LOG_DEBUG("SRST line released");
 997                 if (jtag_nsrst_delay)
 998                         jtag_add_sleep(jtag_nsrst_delay * 1000);
 999         }
1000
1001         if (trst_with_tlr)
1002         {
1003                 LOG_DEBUG("JTAG reset with TLR instead of TRST");
1004                 jtag_add_end_state(TAP_TLR);
1005                 jtag_add_tlr();
1006                 jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
1007                 return;
1008         }
1009
1010         if (jtag_trst)
1011         {
1012                 /* we just asserted nTRST, so we're now in Test-Logic-Reset,
1013                  * and inform possible listeners about this
1014                  */
1015                 LOG_DEBUG("TRST line asserted");
1016                 cmd_queue_cur_state = TAP_TLR;
1017                 jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
1018         }
1019         else
1020         {
1021                 if (jtag_ntrst_delay)
1022                         jtag_add_sleep(jtag_ntrst_delay * 1000);
1023         }
1024 }
1025
1026 int MINIDRIVER(interface_jtag_add_reset)(int req_trst, int req_srst)
1027 {
1028         jtag_command_t **last_cmd = jtag_get_last_command_p();
1029
1030         /* allocate memory for a new list member */
1031         *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
1032         (*last_cmd)->next = NULL;
1033         last_comand_pointer = &((*last_cmd)->next);
1034         (*last_cmd)->type = JTAG_RESET;
1035
1036         (*last_cmd)->cmd.reset = cmd_queue_alloc(sizeof(reset_command_t));
1037         (*last_cmd)->cmd.reset->trst = req_trst;
1038         (*last_cmd)->cmd.reset->srst = req_srst;
1039
1040
1041         return ERROR_OK;
1042 }
1043
1044 void jtag_add_end_state(enum tap_state state)
1045 {
1046         cmd_queue_end_state = state;
1047         if ((cmd_queue_end_state == TAP_SD)||(cmd_queue_end_state == TAP_SD))
1048         {
1049                 LOG_ERROR("BUG: TAP_SD/SI can't be end state. Calling code should use a larger scan field");
1050         }
1051 }
1052
1053 int MINIDRIVER(interface_jtag_add_sleep)(u32 us)
1054 {
1055         jtag_command_t **last_cmd = jtag_get_last_command_p();
1056
1057         /* allocate memory for a new list member */
1058         *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
1059         (*last_cmd)->next = NULL;
1060         last_comand_pointer = &((*last_cmd)->next);
1061         (*last_cmd)->type = JTAG_SLEEP;
1062
1063         (*last_cmd)->cmd.sleep = cmd_queue_alloc(sizeof(sleep_command_t));
1064         (*last_cmd)->cmd.sleep->us = us;
1065
1066         return ERROR_OK;
1067 }
1068
1069 void jtag_add_sleep(u32 us)
1070 {
1071         int retval=interface_jtag_add_sleep(us);
1072         if (retval!=ERROR_OK)
1073                 jtag_error=retval;
1074         return;
1075 }
1076
1077 int jtag_scan_size(scan_command_t *cmd)
1078 {
1079         int bit_count = 0;
1080         int i;
1081
1082         /* count bits in scan command */
1083         for (i = 0; i < cmd->num_fields; i++)
1084         {
1085                 bit_count += cmd->fields[i].num_bits;
1086         }
1087
1088         return bit_count;
1089 }
1090
1091 int jtag_build_buffer(scan_command_t *cmd, u8 **buffer)
1092 {
1093         int bit_count = 0;
1094         int i;
1095
1096         bit_count = jtag_scan_size(cmd);
1097         *buffer = malloc(CEIL(bit_count, 8));
1098
1099         bit_count = 0;
1100
1101         for (i = 0; i < cmd->num_fields; i++)
1102         {
1103                 if (cmd->fields[i].out_value)
1104                 {
1105 #ifdef _DEBUG_JTAG_IO_
1106                         char* char_buf = buf_to_str(cmd->fields[i].out_value, (cmd->fields[i].num_bits > 64) ? 64 : cmd->fields[i].num_bits, 16);
1107 #endif
1108                         buf_set_buf(cmd->fields[i].out_value, 0, *buffer, bit_count, cmd->fields[i].num_bits);
1109 #ifdef _DEBUG_JTAG_IO_
1110                         LOG_DEBUG("fields[%i].out_value: 0x%s", i, char_buf);
1111                         free(char_buf);
1112 #endif
1113                 }
1114
1115                 bit_count += cmd->fields[i].num_bits;
1116         }
1117
1118         return bit_count;
1119
1120 }
1121
1122 int jtag_read_buffer(u8 *buffer, scan_command_t *cmd)
1123 {
1124         int i;
1125         int bit_count = 0;
1126         int retval;
1127
1128         /* we return ERROR_OK, unless a check fails, or a handler reports a problem */
1129         retval = ERROR_OK;
1130
1131         for (i = 0; i < cmd->num_fields; i++)
1132         {
1133                 /* if neither in_value nor in_handler
1134                  * are specified we don't have to examine this field
1135                  */
1136                 if (cmd->fields[i].in_value || cmd->fields[i].in_handler)
1137                 {
1138                         int num_bits = cmd->fields[i].num_bits;
1139                         u8 *captured = buf_set_buf(buffer, bit_count, malloc(CEIL(num_bits, 8)), 0, num_bits);
1140
1141 #ifdef _DEBUG_JTAG_IO_
1142                         char *char_buf;
1143
1144                         char_buf = buf_to_str(captured, (num_bits > 64) ? 64 : num_bits, 16);
1145                         LOG_DEBUG("fields[%i].in_value: 0x%s", i, char_buf);
1146                         free(char_buf);
1147 #endif
1148
1149                         if (cmd->fields[i].in_value)
1150                         {
1151                                 buf_cpy(captured, cmd->fields[i].in_value, num_bits);
1152
1153                                 if (cmd->fields[i].in_handler)
1154                                 {
1155                                         if (cmd->fields[i].in_handler(cmd->fields[i].in_value, cmd->fields[i].in_handler_priv, cmd->fields+i) != ERROR_OK)
1156                                         {
1157                                                 LOG_WARNING("in_handler reported a failed check");
1158                                                 retval = ERROR_JTAG_QUEUE_FAILED;
1159                                         }
1160                                 }
1161                         }
1162
1163                         /* no in_value specified, but a handler takes care of the scanned data */
1164                         if (cmd->fields[i].in_handler && (!cmd->fields[i].in_value))
1165                         {
1166                                 if (cmd->fields[i].in_handler(captured, cmd->fields[i].in_handler_priv, cmd->fields+i) != ERROR_OK)
1167                                 {
1168                                         /* We're going to call the error:handler later, but if the in_handler
1169                                          * reported an error we report this failure upstream
1170                                          */
1171                                         LOG_WARNING("in_handler reported a failed check");
1172                                         retval = ERROR_JTAG_QUEUE_FAILED;
1173                                 }
1174                         }
1175
1176                         free(captured);
1177                 }
1178                 bit_count += cmd->fields[i].num_bits;
1179         }
1180
1181         return retval;
1182 }
1183
1184 int jtag_check_value(u8 *captured, void *priv, scan_field_t *field)
1185 {
1186         int retval = ERROR_OK;
1187         int num_bits = field->num_bits;
1188
1189         int compare_failed = 0;
1190
1191         if (field->in_check_mask)
1192                 compare_failed = buf_cmp_mask(captured, field->in_check_value, field->in_check_mask, num_bits);
1193         else
1194                 compare_failed = buf_cmp(captured, field->in_check_value, num_bits);
1195
1196         if (compare_failed)
1197                 {
1198                 /* An error handler could have caught the failing check
1199                  * only report a problem when there wasn't a handler, or if the handler
1200                  * acknowledged the error
1201                  */
1202                 if (compare_failed)
1203                 {
1204                         char *captured_char = buf_to_str(captured, (num_bits > 64) ? 64 : num_bits, 16);
1205                         char *in_check_value_char = buf_to_str(field->in_check_value, (num_bits > 64) ? 64 : num_bits, 16);
1206
1207                         if (field->in_check_mask)
1208                         {
1209                                 char *in_check_mask_char;
1210                                 in_check_mask_char = buf_to_str(field->in_check_mask, (num_bits > 64) ? 64 : num_bits, 16);
1211                                 LOG_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);
1212                                 free(in_check_mask_char);
1213                         }
1214                         else
1215                         {
1216                                 LOG_WARNING("value captured during scan didn't pass the requested check: captured: 0x%s check_value: 0x%s", captured_char, in_check_value_char);
1217                         }
1218
1219                         free(captured_char);
1220                         free(in_check_value_char);
1221
1222                         retval = ERROR_JTAG_QUEUE_FAILED;
1223                 }
1224
1225         }
1226         return retval;
1227 }
1228
1229 /*
1230   set up checking of this field using the in_handler. The values passed in must be valid until
1231   after jtag_execute() has completed.
1232  */
1233 void jtag_set_check_value(scan_field_t *field, u8 *value, u8 *mask, error_handler_t *in_error_handler)
1234 {
1235         if (value)
1236                 field->in_handler = jtag_check_value;
1237         else
1238                 field->in_handler = NULL;       /* No check, e.g. embeddedice uses value==NULL to indicate no check */
1239         field->in_handler_priv = NULL;
1240         field->in_check_value = value;
1241         field->in_check_mask = mask;
1242 }
1243
1244 enum scan_type jtag_scan_type(scan_command_t *cmd)
1245 {
1246         int i;
1247         int type = 0;
1248
1249         for (i = 0; i < cmd->num_fields; i++)
1250         {
1251                 if (cmd->fields[i].in_value || cmd->fields[i].in_handler)
1252                         type |= SCAN_IN;
1253                 if (cmd->fields[i].out_value)
1254                         type |= SCAN_OUT;
1255         }
1256
1257         return type;
1258 }
1259
1260 int MINIDRIVER(interface_jtag_execute_queue)(void)
1261 {
1262         int retval;
1263
1264         if (jtag==NULL)
1265         {
1266                 LOG_ERROR("No JTAG interface configured yet. Issue 'init' command in startup scripts before communicating with targets.");
1267                 return ERROR_FAIL;
1268         }
1269
1270         retval = jtag->execute_queue();
1271
1272         cmd_queue_free();
1273
1274         jtag_command_queue = NULL;
1275         last_comand_pointer = &jtag_command_queue;
1276
1277         return retval;
1278 }
1279
1280 int jtag_execute_queue(void)
1281 {
1282         int retval=interface_jtag_execute_queue();
1283         if (retval==ERROR_OK)
1284         {
1285                 retval=jtag_error;
1286         }
1287         jtag_error=ERROR_OK;
1288         return retval;
1289 }
1290
1291 int jtag_reset_callback(enum jtag_event event, void *priv)
1292 {
1293         jtag_device_t *device = priv;
1294
1295         LOG_DEBUG("-");
1296
1297         if (event == JTAG_TRST_ASSERTED)
1298         {
1299                 buf_set_ones(device->cur_instr, device->ir_length);
1300                 device->bypass = 1;
1301         }
1302
1303         return ERROR_OK;
1304 }
1305
1306 void jtag_sleep(u32 us)
1307 {
1308         usleep(us);
1309 }
1310
1311 /* Try to examine chain layout according to IEEE 1149.1 §12
1312  */
1313 int jtag_examine_chain()
1314 {
1315         jtag_device_t *device = jtag_devices;
1316         scan_field_t field;
1317         u8 idcode_buffer[JTAG_MAX_CHAIN_SIZE * 4];
1318         int i;
1319         int bit_count;
1320         int device_count = 0;
1321         u8 zero_check = 0x0;
1322         u8 one_check = 0xff;
1323
1324         field.device = 0;
1325         field.num_bits = sizeof(idcode_buffer) * 8;
1326         field.out_value = idcode_buffer;
1327         field.out_mask = NULL;
1328         field.in_value = idcode_buffer;
1329         field.in_check_value = NULL;
1330         field.in_check_mask = NULL;
1331         field.in_handler = NULL;
1332         field.in_handler_priv = NULL;
1333
1334         for (i = 0; i < JTAG_MAX_CHAIN_SIZE; i++)
1335         {
1336                 buf_set_u32(idcode_buffer, i * 32, 32, 0x000000FF);
1337         }
1338
1339         jtag_add_plain_dr_scan(1, &field, TAP_TLR);
1340         jtag_execute_queue();
1341
1342         for (i = 0; i < JTAG_MAX_CHAIN_SIZE * 4; i++)
1343         {
1344                 zero_check |= idcode_buffer[i];
1345                 one_check &= idcode_buffer[i];
1346         }
1347
1348         /* if there wasn't a single non-zero bit or if all bits were one, the scan isn't valid */
1349         if ((zero_check == 0x00) || (one_check == 0xff))
1350         {
1351                 LOG_ERROR("JTAG communication failure, check connection, JTAG interface, target power etc.");
1352                 return ERROR_JTAG_INIT_FAILED;
1353         }
1354
1355         for (bit_count = 0; bit_count < (JTAG_MAX_CHAIN_SIZE * 32) - 31;)
1356         {
1357                 u32 idcode = buf_get_u32(idcode_buffer, bit_count, 32);
1358                 if ((idcode & 1) == 0)
1359                 {
1360                         /* LSB must not be 0, this indicates a device in bypass */
1361                         device_count++;
1362
1363                         bit_count += 1;
1364                 }
1365                 else
1366                 {
1367                         u32 manufacturer;
1368                         u32 part;
1369                         u32 version;
1370
1371                         if (idcode == 0x000000FF)
1372                         {
1373                                 /* End of chain (invalid manufacturer ID) */
1374                                 break;
1375                         }
1376
1377                         if (device)
1378                         {
1379                                 device->idcode = idcode;
1380                                 device = device->next;
1381                         }
1382                         device_count++;
1383
1384                         manufacturer = (idcode & 0xffe) >> 1;
1385                         part = (idcode & 0xffff000) >> 12;
1386                         version = (idcode & 0xf0000000) >> 28;
1387
1388                         LOG_INFO("JTAG device found: 0x%8.8x (Manufacturer: 0x%3.3x, Part: 0x%4.4x, Version: 0x%1.1x)",
1389                                 idcode, manufacturer, part, version);
1390
1391                         bit_count += 32;
1392                 }
1393         }
1394
1395         /* see if number of discovered devices matches configuration */
1396         if (device_count != jtag_num_devices)
1397         {
1398                 LOG_ERROR("number of discovered devices in JTAG chain (%i) doesn't match configuration (%i)",
1399                                 device_count, jtag_num_devices);
1400                 LOG_ERROR("check the config file and ensure proper JTAG communication (connections, speed, ...)");
1401                 return ERROR_JTAG_INIT_FAILED;
1402         }
1403
1404         return ERROR_OK;
1405 }
1406
1407 int jtag_validate_chain()
1408 {
1409         jtag_device_t *device = jtag_devices;
1410         int total_ir_length = 0;
1411         u8 *ir_test = NULL;
1412         scan_field_t field;
1413         int chain_pos = 0;
1414
1415         while (device)
1416         {
1417                 total_ir_length += device->ir_length;
1418                 device = device->next;
1419         }
1420
1421         total_ir_length += 2;
1422         ir_test = malloc(CEIL(total_ir_length, 8));
1423         buf_set_ones(ir_test, total_ir_length);
1424
1425         field.device = 0;
1426         field.num_bits = total_ir_length;
1427         field.out_value = ir_test;
1428         field.out_mask = NULL;
1429         field.in_value = ir_test;
1430         field.in_check_value = NULL;
1431         field.in_check_mask = NULL;
1432         field.in_handler = NULL;
1433         field.in_handler_priv = NULL;
1434
1435         jtag_add_plain_ir_scan(1, &field, TAP_TLR);
1436         jtag_execute_queue();
1437
1438         device = jtag_devices;
1439         while (device)
1440         {
1441                 if (buf_get_u32(ir_test, chain_pos, 2) != 0x1)
1442                 {
1443                         char *cbuf = buf_to_str(ir_test, total_ir_length, 16);
1444                         LOG_ERROR("Error validating JTAG scan chain, IR mismatch, scan returned 0x%s", cbuf);
1445                         free(cbuf);
1446                         free(ir_test);
1447                         return ERROR_JTAG_INIT_FAILED;
1448                 }
1449                 chain_pos += device->ir_length;
1450                 device = device->next;
1451         }
1452
1453         if (buf_get_u32(ir_test, chain_pos, 2) != 0x3)
1454         {
1455                 char *cbuf = buf_to_str(ir_test, total_ir_length, 16);
1456                 LOG_ERROR("Error validating JTAG scan chain, IR mismatch, scan returned 0x%s", cbuf);
1457                 free(cbuf);
1458                 free(ir_test);
1459                 return ERROR_JTAG_INIT_FAILED;
1460         }
1461
1462         free(ir_test);
1463
1464         return ERROR_OK;
1465 }
1466
1467 int jtag_register_commands(struct command_context_s *cmd_ctx)
1468 {
1469         register_command(cmd_ctx, NULL, "interface", handle_interface_command,
1470                 COMMAND_CONFIG, NULL);
1471         register_command(cmd_ctx, NULL, "jtag_speed", handle_jtag_speed_command,
1472                 COMMAND_ANY, "set jtag speed (if supported) <reset speed> [<post reset speed, default value is reset speed>]");
1473         register_command(cmd_ctx, NULL, "jtag_khz", handle_jtag_khz_command,
1474                 COMMAND_ANY, "same as jtag_speed, except it takes maximum khz as arguments. 0 KHz = RTCK.");
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_ANY, "jtag_nsrst_delay <ms> - delay after deasserting srst in ms");
1481         register_command(cmd_ctx, NULL, "jtag_ntrst_delay", handle_jtag_ntrst_delay_command,
1482                 COMMAND_ANY, "jtag_ntrst_delay <ms> - delay after deasserting trst in ms");
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, "irscan", handle_irscan_command,
1494                 COMMAND_EXEC, "execute IR scan <device> <instr> [dev2] [instr2] ...");
1495         register_command(cmd_ctx, NULL, "drscan", handle_drscan_command,
1496                 COMMAND_EXEC, "execute DR scan <device> <var> [dev2] [var2] ...");
1497
1498         register_command(cmd_ctx, NULL, "verify_ircapture", handle_verify_ircapture_command,
1499                 COMMAND_ANY, "verify value captured during Capture-IR <enable|disable>");
1500         return ERROR_OK;
1501 }
1502
1503 int jtag_interface_init(struct command_context_s *cmd_ctx)
1504 {
1505         if (jtag)
1506                 return ERROR_OK;
1507
1508         if (!jtag_interface)
1509         {
1510                 /* nothing was previously specified by "interface" command */
1511                 LOG_ERROR("JTAG interface has to be specified, see \"interface\" command");
1512                 return ERROR_JTAG_INVALID_INTERFACE;
1513         }
1514         if(hasKHz)
1515         {
1516                 /*stay on "reset speed"*/
1517                 jtag_interface->khz(speed1, &jtag_speed);
1518                 jtag_interface->khz(speed2, &jtag_speed_post_reset);
1519                 hasKHz = 0;
1520         }
1521
1522         if (jtag_interface->init() != ERROR_OK)
1523                 return ERROR_JTAG_INIT_FAILED;
1524
1525
1526
1527         jtag = jtag_interface;
1528         return ERROR_OK;
1529 }
1530
1531 static int jtag_init_inner(struct command_context_s *cmd_ctx)
1532 {
1533         int validate_tries = 0;
1534         jtag_device_t *device;
1535         int retval;
1536
1537         LOG_DEBUG("Init JTAG chain");
1538
1539         device = jtag_devices;
1540         jtag_ir_scan_size = 0;
1541         jtag_num_devices = 0;
1542         while (device != NULL)
1543         {
1544                 jtag_ir_scan_size += device->ir_length;
1545                 jtag_num_devices++;
1546                 device = device->next;
1547         }
1548
1549         jtag_add_tlr();
1550         if ((retval=jtag_execute_queue())!=ERROR_OK)
1551                 return retval;
1552
1553         /* examine chain first, as this could discover the real chain layout */
1554         if (jtag_examine_chain() != ERROR_OK)
1555         {
1556                 LOG_ERROR("trying to validate configured JTAG chain anyway...");
1557         }
1558
1559         while (jtag_validate_chain() != ERROR_OK)
1560         {
1561                 validate_tries++;
1562
1563                 if (validate_tries > 5)
1564                 {
1565                         LOG_ERROR("Could not validate JTAG chain, exit");
1566                         return ERROR_JTAG_INVALID_INTERFACE;
1567                 }
1568                 usleep(10000);
1569         }
1570
1571         return ERROR_OK;
1572 }
1573
1574 int jtag_init_reset(struct command_context_s *cmd_ctx)
1575 {
1576         int retval;
1577
1578         if ((retval=jtag_interface_init(cmd_ctx)) != ERROR_OK)
1579                 return retval;
1580
1581         LOG_DEBUG("Trying to bring the JTAG controller to life by asserting TRST / TLR");
1582
1583         /* Reset can happen after a power cycle.
1584          *
1585          * Ideally we would only assert TRST or run TLR before the target reset.
1586          *
1587          * However w/srst_pulls_trst, trst is asserted together with the target
1588          * reset whether we want it or not.
1589          *
1590          * NB! Some targets have JTAG circuitry disabled until a
1591          * trst & srst has been asserted.
1592          *
1593          * NB! here we assume nsrst/ntrst delay are sufficient!
1594          *
1595          * NB! order matters!!!! srst *can* disconnect JTAG circuitry
1596          *
1597          */
1598         jtag_add_reset(1, 0); /* TLR or TRST */
1599         if (jtag_reset_config & RESET_HAS_SRST)
1600         {
1601                 jtag_add_reset(1, 1);
1602                 if ((jtag_reset_config & RESET_SRST_PULLS_TRST)==0)
1603                         jtag_add_reset(0, 1);
1604         }
1605         jtag_add_reset(0, 0);
1606         if ((retval = jtag_execute_queue()) != ERROR_OK)
1607                 return retval;
1608
1609         /* Check that we can communication on the JTAG chain + eventually we want to
1610          * be able to perform enumeration only after OpenOCD has started
1611          * telnet and GDB server
1612          *
1613          * That would allow users to more easily perform any magic they need to before
1614          * reset happens.
1615          */
1616         return jtag_init_inner(cmd_ctx);
1617 }
1618
1619 int jtag_init(struct command_context_s *cmd_ctx)
1620 {
1621         int retval;
1622         if ((retval=jtag_interface_init(cmd_ctx)) != ERROR_OK)
1623                 return retval;
1624         if (jtag_init_inner(cmd_ctx)==ERROR_OK)
1625         {
1626                 return ERROR_OK;
1627         }
1628         return jtag_init_reset(cmd_ctx);
1629 }
1630
1631
1632 static int default_khz(int khz, int *jtag_speed)
1633 {
1634         LOG_ERROR("Translation from khz to jtag_speed not implemented");
1635         return ERROR_FAIL;
1636 }
1637
1638 static int default_speed_div(int speed, int *khz)
1639 {
1640         return ERROR_FAIL;
1641 }
1642
1643 int handle_interface_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1644 {
1645         int i;
1646
1647         /* check whether the interface is already configured */
1648         if (jtag_interface)
1649         {
1650                 LOG_WARNING("Interface already configured, ignoring");
1651                 return ERROR_OK;
1652         }
1653
1654         /* interface name is a mandatory argument */
1655         if (argc < 1 || args[0][0] == '\0')
1656         {
1657                 return ERROR_COMMAND_SYNTAX_ERROR;
1658         }
1659
1660         for (i=0; jtag_interfaces[i]; i++)
1661         {
1662                 if (strcmp(args[0], jtag_interfaces[i]->name) == 0)
1663                 {
1664                         if (jtag_interfaces[i]->register_commands(cmd_ctx) != ERROR_OK)
1665                                 exit(-1);
1666
1667                         jtag_interface = jtag_interfaces[i];
1668
1669                         if (jtag_interface->khz == NULL)
1670                         {
1671                                 jtag_interface->khz = default_khz;
1672                         }
1673                         if (jtag_interface->speed_div == NULL)
1674                         {
1675                                 jtag_interface->speed_div = default_speed_div;
1676                         }
1677                         return ERROR_OK;
1678                 }
1679         }
1680
1681         /* no valid interface was found (i.e. the configuration option,
1682          * didn't match one of the compiled-in interfaces
1683          */
1684         LOG_ERROR("No valid jtag interface found (%s)", args[0]);
1685         LOG_ERROR("compiled-in jtag interfaces:");
1686         for (i = 0; jtag_interfaces[i]; i++)
1687         {
1688                 LOG_ERROR("%i: %s", i, jtag_interfaces[i]->name);
1689         }
1690
1691         return ERROR_JTAG_INVALID_INTERFACE;
1692 }
1693
1694 int handle_jtag_device_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1695 {
1696         jtag_device_t **last_device_p = &jtag_devices;
1697
1698         if (*last_device_p)
1699         {
1700                 while ((*last_device_p)->next)
1701                         last_device_p = &((*last_device_p)->next);
1702                 last_device_p = &((*last_device_p)->next);
1703         }
1704
1705         if (argc < 3)
1706                 return ERROR_OK;
1707
1708         *last_device_p = malloc(sizeof(jtag_device_t));
1709         (*last_device_p)->ir_length = strtoul(args[0], NULL, 0);
1710
1711         (*last_device_p)->expected = malloc((*last_device_p)->ir_length);
1712         buf_set_u32((*last_device_p)->expected, 0, (*last_device_p)->ir_length, strtoul(args[1], NULL, 0));
1713         (*last_device_p)->expected_mask = malloc((*last_device_p)->ir_length);
1714         buf_set_u32((*last_device_p)->expected_mask, 0, (*last_device_p)->ir_length, strtoul(args[2], NULL, 0));
1715
1716         (*last_device_p)->cur_instr = malloc((*last_device_p)->ir_length);
1717         (*last_device_p)->bypass = 1;
1718         buf_set_ones((*last_device_p)->cur_instr, (*last_device_p)->ir_length);
1719
1720         (*last_device_p)->next = NULL;
1721
1722         jtag_register_event_callback(jtag_reset_callback, (*last_device_p));
1723
1724         jtag_num_devices++;
1725
1726         return ERROR_OK;
1727 }
1728
1729 int handle_scan_chain_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1730 {
1731         jtag_device_t *device = jtag_devices;
1732         int device_count = 0;
1733
1734         while (device)
1735         {
1736                 u32 expected, expected_mask, cur_instr;
1737                 expected = buf_get_u32(device->expected, 0, device->ir_length);
1738                 expected_mask = buf_get_u32(device->expected_mask, 0, device->ir_length);
1739                 cur_instr = buf_get_u32(device->cur_instr, 0, device->ir_length);
1740                 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);
1741                 device = device->next;
1742                 device_count++;
1743         }
1744
1745         return ERROR_OK;
1746 }
1747
1748 int handle_reset_config_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1749 {
1750         if (argc < 1)
1751                 return ERROR_COMMAND_SYNTAX_ERROR;
1752
1753         if (argc >= 1)
1754         {
1755                 if (strcmp(args[0], "none") == 0)
1756                         jtag_reset_config = RESET_NONE;
1757                 else if (strcmp(args[0], "trst_only") == 0)
1758                         jtag_reset_config = RESET_HAS_TRST;
1759                 else if (strcmp(args[0], "srst_only") == 0)
1760                         jtag_reset_config = RESET_HAS_SRST;
1761                 else if (strcmp(args[0], "trst_and_srst") == 0)
1762                         jtag_reset_config = RESET_TRST_AND_SRST;
1763                 else
1764                 {
1765                         LOG_ERROR("invalid reset_config argument, defaulting to none");
1766                         jtag_reset_config = RESET_NONE;
1767                         return ERROR_INVALID_ARGUMENTS;
1768                 }
1769         }
1770
1771         if (argc >= 2)
1772         {
1773                 if (strcmp(args[1], "separate") == 0)
1774                 {
1775                         /* seperate reset lines - default */
1776                 } else
1777                 {
1778                         if (strcmp(args[1], "srst_pulls_trst") == 0)
1779                                 jtag_reset_config |= RESET_SRST_PULLS_TRST;
1780                         else if (strcmp(args[1], "trst_pulls_srst") == 0)
1781                                 jtag_reset_config |= RESET_TRST_PULLS_SRST;
1782                         else if (strcmp(args[1], "combined") == 0)
1783                                 jtag_reset_config |= RESET_SRST_PULLS_TRST | RESET_TRST_PULLS_SRST;
1784                         else
1785                         {
1786                                 LOG_ERROR("invalid reset_config argument, defaulting to none");
1787                                 jtag_reset_config = RESET_NONE;
1788                                 return ERROR_INVALID_ARGUMENTS;
1789                         }
1790                 }
1791         }
1792
1793         if (argc >= 3)
1794         {
1795                 if (strcmp(args[2], "trst_open_drain") == 0)
1796                         jtag_reset_config |= RESET_TRST_OPEN_DRAIN;
1797                 else if (strcmp(args[2], "trst_push_pull") == 0)
1798                         jtag_reset_config &= ~RESET_TRST_OPEN_DRAIN;
1799                 else
1800                 {
1801                         LOG_ERROR("invalid reset_config argument, defaulting to none");
1802                         jtag_reset_config = RESET_NONE;
1803                         return ERROR_INVALID_ARGUMENTS;
1804                 }
1805         }
1806
1807         if (argc >= 4)
1808         {
1809                 if (strcmp(args[3], "srst_push_pull") == 0)
1810                         jtag_reset_config |= RESET_SRST_PUSH_PULL;
1811                 else if (strcmp(args[3], "srst_open_drain") == 0)
1812                         jtag_reset_config &= ~RESET_SRST_PUSH_PULL;
1813                 else
1814                 {
1815                         LOG_ERROR("invalid reset_config argument, defaulting to none");
1816                         jtag_reset_config = RESET_NONE;
1817                         return ERROR_INVALID_ARGUMENTS;
1818                 }
1819         }
1820
1821         return ERROR_OK;
1822 }
1823
1824 int handle_jtag_nsrst_delay_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1825 {
1826         if (argc < 1)
1827         {
1828                 LOG_ERROR("jtag_nsrst_delay <ms> command takes one required argument");
1829                 exit(-1);
1830         }
1831         else
1832         {
1833                 jtag_nsrst_delay = strtoul(args[0], NULL, 0);
1834         }
1835
1836         return ERROR_OK;
1837 }
1838
1839 int handle_jtag_ntrst_delay_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1840 {
1841         if (argc < 1)
1842         {
1843                 LOG_ERROR("jtag_ntrst_delay <ms> command takes one required argument");
1844                 exit(-1);
1845         }
1846         else
1847         {
1848                 jtag_ntrst_delay = strtoul(args[0], NULL, 0);
1849         }
1850
1851         return ERROR_OK;
1852 }
1853
1854 int handle_jtag_speed_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1855 {
1856         int cur_speed = 0;
1857
1858         if (argc != 0)
1859         {
1860                 if ((argc<1) || (argc>2))
1861                         return ERROR_COMMAND_SYNTAX_ERROR;
1862
1863                 LOG_DEBUG("handle jtag speed");
1864
1865                 if (argc >= 1)
1866                         cur_speed = jtag_speed = jtag_speed_post_reset = strtoul(args[0], NULL, 0);
1867                 if (argc == 2)
1868                         cur_speed = jtag_speed_post_reset = strtoul(args[1], NULL, 0);
1869
1870                 /* this command can be called during CONFIG,
1871                  * in which case jtag isn't initialized */
1872                 if (jtag)
1873                 {
1874                         jtag->speed_div(jtag_speed, &speed1);
1875                         jtag->speed_div(jtag_speed_post_reset, &speed2);
1876                         jtag->speed(cur_speed);
1877                 }
1878         }
1879         command_print(cmd_ctx, "jtag_speed: %d, %d", jtag_speed, jtag_speed_post_reset);
1880
1881         return ERROR_OK;
1882 }
1883
1884 int handle_jtag_khz_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1885 {
1886         LOG_DEBUG("handle jtag khz");
1887
1888         if (argc>2)
1889                 return ERROR_COMMAND_SYNTAX_ERROR;
1890
1891         if(argc != 0)
1892         {
1893
1894                 if (argc >= 1)
1895                         speed1 = speed2 = strtoul(args[0], NULL, 0);
1896                 if (argc == 2)
1897                         speed2 = strtoul(args[1], NULL, 0);
1898
1899                 if (jtag != NULL)
1900                 {
1901                         int cur_speed = 0;
1902                         LOG_DEBUG("have interface set up");
1903                         int speed_div1, speed_div2;
1904                         if (jtag->khz(speed1, &speed_div1)!=ERROR_OK)
1905                         {
1906                                 speed1 = speed2 = 0;
1907                                 return ERROR_OK;
1908                         }
1909                         if (jtag->khz(speed2, &speed_div2)!=ERROR_OK)
1910                         {
1911                                 speed1 = speed2 = 0;
1912                                 return ERROR_OK;
1913                         }
1914
1915                         if (argc >= 1)
1916                                 cur_speed = jtag_speed = jtag_speed_post_reset = speed_div1;
1917                         if (argc == 2)
1918                                 cur_speed = jtag_speed_post_reset = speed_div2;
1919
1920                         jtag->speed(cur_speed);
1921                 } else
1922                 {
1923                         hasKHz = 1;
1924                 }
1925         }
1926         command_print(cmd_ctx, "jtag_khz: %d, %d", speed1, speed2);
1927
1928         return ERROR_OK;
1929 }
1930
1931
1932 int handle_endstate_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1933 {
1934         enum tap_state state;
1935
1936         if (argc < 1)
1937         {
1938                 return ERROR_COMMAND_SYNTAX_ERROR;
1939         }
1940         else
1941         {
1942                 for (state = 0; state < 16; state++)
1943                 {
1944                         if (strcmp(args[0], tap_state_strings[state]) == 0)
1945                         {
1946                                 jtag_add_end_state(state);
1947                                 jtag_execute_queue();
1948                         }
1949                 }
1950         }
1951         command_print(cmd_ctx, "current endstate: %s", tap_state_strings[cmd_queue_end_state]);
1952
1953         return ERROR_OK;
1954 }
1955
1956 int handle_jtag_reset_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1957 {
1958         int trst = -1;
1959         int srst = -1;
1960
1961         if (argc < 2)
1962         {
1963                 return ERROR_COMMAND_SYNTAX_ERROR;
1964         }
1965
1966         if (args[0][0] == '1')
1967                 trst = 1;
1968         else if (args[0][0] == '0')
1969                 trst = 0;
1970         else
1971         {
1972                 return ERROR_COMMAND_SYNTAX_ERROR;
1973         }
1974
1975         if (args[1][0] == '1')
1976                 srst = 1;
1977         else if (args[1][0] == '0')
1978                 srst = 0;
1979         else
1980         {
1981                 return ERROR_COMMAND_SYNTAX_ERROR;
1982         }
1983
1984         if (jtag_interface_init(cmd_ctx) != ERROR_OK)
1985                 return ERROR_JTAG_INIT_FAILED;
1986
1987         jtag_add_reset(trst, srst);
1988         jtag_execute_queue();
1989
1990         return ERROR_OK;
1991 }
1992
1993 int handle_runtest_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1994 {
1995         if (argc < 1)
1996         {
1997                 return ERROR_COMMAND_SYNTAX_ERROR;
1998         }
1999
2000         jtag_add_runtest(strtol(args[0], NULL, 0), -1);
2001         jtag_execute_queue();
2002
2003         return ERROR_OK;
2004
2005 }
2006
2007
2008 int handle_irscan_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2009 {
2010         int i;
2011         scan_field_t *fields;
2012
2013         if ((argc < 2) || (argc % 2))
2014         {
2015                 return ERROR_COMMAND_SYNTAX_ERROR;
2016         }
2017
2018         fields = malloc(sizeof(scan_field_t) * argc / 2);
2019
2020         for (i = 0; i < argc / 2; i++)
2021         {
2022                 int device = strtoul(args[i*2], NULL, 0);
2023                 int field_size = jtag_get_device(device)->ir_length;
2024                 fields[i].device = device;
2025                 fields[i].out_value = malloc(CEIL(field_size, 8));
2026                 buf_set_u32(fields[i].out_value, 0, field_size, strtoul(args[i*2+1], NULL, 0));
2027                 fields[i].out_mask = NULL;
2028                 fields[i].in_value = NULL;
2029                 fields[i].in_check_mask = NULL;
2030                 fields[i].in_handler = NULL;
2031                 fields[i].in_handler_priv = NULL;
2032         }
2033
2034         jtag_add_ir_scan(argc / 2, fields, -1);
2035         jtag_execute_queue();
2036
2037         for (i = 0; i < argc / 2; i++)
2038                 free(fields[i].out_value);
2039
2040         free (fields);
2041
2042         return ERROR_OK;
2043 }
2044
2045 int handle_drscan_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2046 {
2047         scan_field_t *fields;
2048         int num_fields = 0;
2049         int field_count = 0;
2050         var_t *var;
2051         int i, j;
2052
2053         if ((argc < 2) || (argc % 2))
2054         {
2055                 return ERROR_COMMAND_SYNTAX_ERROR;
2056         }
2057
2058         for (i = 0; i < argc; i+=2)
2059         {
2060                 var = get_var_by_namenum(args[i+1]);
2061                 if (var)
2062                 {
2063                         num_fields += var->num_fields;
2064                 }
2065                 else
2066                 {
2067                         command_print(cmd_ctx, "variable %s doesn't exist", args[i+1]);
2068                         return ERROR_OK;
2069                 }
2070         }
2071
2072         fields = malloc(sizeof(scan_field_t) * num_fields);
2073
2074         for (i = 0; i < argc; i+=2)
2075         {
2076                 var = get_var_by_namenum(args[i+1]);
2077
2078                 for (j = 0; j < var->num_fields; j++)
2079                 {
2080                         fields[field_count].device = strtol(args[i], NULL, 0);
2081                         fields[field_count].num_bits = var->fields[j].num_bits;
2082                         fields[field_count].out_value = malloc(CEIL(var->fields[j].num_bits, 8));
2083                         buf_set_u32(fields[field_count].out_value, 0, var->fields[j].num_bits, var->fields[j].value);
2084                         fields[field_count].out_mask = NULL;
2085                         fields[field_count].in_value = fields[field_count].out_value;
2086                         fields[field_count].in_check_mask = NULL;
2087                         fields[field_count].in_check_value = NULL;
2088                         fields[field_count].in_handler = field_le_to_host;
2089                         fields[field_count++].in_handler_priv = &(var->fields[j]);
2090                 }
2091         }
2092
2093         jtag_add_dr_scan(num_fields, fields, -1);
2094         jtag_execute_queue();
2095
2096         for (i = 0; i < argc / 2; i++)
2097                 free(fields[i].out_value);
2098
2099         free(fields);
2100
2101         return ERROR_OK;
2102 }
2103
2104 int handle_verify_ircapture_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2105 {
2106         if (argc == 1)
2107         {
2108                 if (strcmp(args[0], "enable") == 0)
2109                 {
2110                         jtag_verify_capture_ir = 1;
2111                 }
2112                 else if (strcmp(args[0], "disable") == 0)
2113                 {
2114                         jtag_verify_capture_ir = 0;
2115                 } else
2116                 {
2117                         return ERROR_COMMAND_SYNTAX_ERROR;
2118                 }
2119         } else if (argc != 0)
2120         {
2121                 return ERROR_COMMAND_SYNTAX_ERROR;
2122         }
2123
2124         command_print(cmd_ctx, "verify Capture-IR is %s", (jtag_verify_capture_ir) ? "enabled": "disabled");
2125
2126         return ERROR_OK;
2127 }