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   1 /***************************************************************************
   2  *   Copyright (C) 2005 by Dominic Rath                                    *
   3  *   Dominic.Rath@gmx.de                                                   *
   4  *                                                                         *
   5  *   Copyright (C) 2007,2008 Øyvind Harboe                                      *
   6  *   oyvind.harboe@zylin.com                                               *
   7  *                                                                         *
   8  *   This program is free software; you can redistribute it and/or modify  *
   9  *   it under the terms of the GNU General Public License as published by  *
  10  *   the Free Software Foundation; either version 2 of the License, or     *
  11  *   (at your option) any later version.                                   *
  12  *                                                                         *
  13  *   This program is distributed in the hope that it will be useful,       *
  14  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  15  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  16  *   GNU General Public License for more details.                          *
  17  *                                                                         *
  18  *   You should have received a copy of the GNU General Public License     *
  19  *   along with this program; if not, write to the                         *
  20  *   Free Software Foundation, Inc.,                                       *
  21  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
  22  ***************************************************************************/
  23 #ifdef HAVE_CONFIG_H
  24 #include "config.h"
  25 #endif
  26
  27 #include "replacements.h"
  28
  29 #include "jtag.h"
  30
  31 #include "command.h"
  32 #include "log.h"
  33
  34 #include "stdlib.h"
  35 #include "string.h"
  36 #include <unistd.h>
  37
  38 /* note that this is not marked as static as it must be available from outside jtag.c for those
  39    that implement the jtag_xxx() minidriver layer
  40 */
  41 int jtag_error=ERROR_OK;
  42
  43
  44 char* tap_state_strings[16] =
  45 {
  46         "tlr",
  47         "sds", "cd", "sd", "e1d", "pd", "e2d", "ud",
  48         "rti",
  49         "sis", "ci", "si", "e1i", "pi", "e2i", "ui"
  50 };
  51
  52 typedef struct cmd_queue_page_s
  53 {
  54         void *address;
  55         size_t used;
  56         struct cmd_queue_page_s *next;
  57 } cmd_queue_page_t;
  58
  59 #define CMD_QUEUE_PAGE_SIZE (1024 * 1024)
  60 static cmd_queue_page_t *cmd_queue_pages = NULL;
  61
  62 /* tap_move[i][j]: tap movement command to go from state i to state j
  63  * 0: Test-Logic-Reset
  64  * 1: Run-Test/Idle
  65  * 2: Shift-DR
  66  * 3: Pause-DR
  67  * 4: Shift-IR
  68  * 5: Pause-IR
  69  *
  70  * SD->SD and SI->SI have to be caught in interface specific code
  71  */
  72 u8 tap_move[6][6] =
  73 {
  74 /*        TLR   RTI   SD    PD    SI    PI             */
  75         {0x7f, 0x00, 0x17, 0x0a, 0x1b, 0x16},   /* TLR */
  76         {0x7f, 0x00, 0x25, 0x05, 0x2b, 0x0b},   /* RTI */
  77         {0x7f, 0x31, 0x00, 0x01, 0x0f, 0x2f},   /* SD  */
  78         {0x7f, 0x30, 0x20, 0x17, 0x1e, 0x2f},   /* PD  */
  79         {0x7f, 0x31, 0x07, 0x17, 0x00, 0x01},   /* SI  */
  80         {0x7f, 0x30, 0x1c, 0x17, 0x20, 0x2f}    /* PI  */
  81 };
  82
  83 int tap_move_map[16] = {
  84         0, -1, -1,  2, -1,  3, -1, -1,
  85         1, -1, -1,  4, -1,  5, -1, -1
  86 };
  87
  88 tap_transition_t tap_transitions[16] =
  89 {
  90         {TAP_TLR, TAP_RTI},             /* TLR */
  91         {TAP_SIS, TAP_CD},              /* SDS */
  92         {TAP_E1D, TAP_SD},              /* CD  */
  93         {TAP_E1D, TAP_SD},              /* SD  */
  94         {TAP_UD,  TAP_PD},              /* E1D */
  95         {TAP_E2D, TAP_PD},              /* PD  */
  96         {TAP_UD,  TAP_SD},              /* E2D */
  97         {TAP_SDS, TAP_RTI},             /* UD  */
  98         {TAP_SDS, TAP_RTI},             /* RTI */
  99         {TAP_TLR, TAP_CI},              /* SIS */
 100         {TAP_E1I, TAP_SI},              /* CI  */
 101         {TAP_E1I, TAP_SI},              /* SI  */
 102         {TAP_UI,  TAP_PI},              /* E1I */
 103         {TAP_E2I, TAP_PI},              /* PI  */
 104         {TAP_UI,  TAP_SI},              /* E2I */
 105         {TAP_SDS, TAP_RTI}              /* UI  */
 106 };
 107
 108 char* jtag_event_strings[] =
 109 {
 110         "JTAG controller reset (TLR or TRST)"
 111 };
 112
 113 /* kludge!!!! these are just global variables that the
 114  * interface use internally. They really belong
 115  * inside the drivers, but we don't want to break
 116  * linking the drivers!!!!
 117  */
 118 enum tap_state end_state = TAP_TLR;
 119 enum tap_state cur_state = TAP_TLR;
 120 int jtag_trst = 0;
 121 int jtag_srst = 0;
 122
 123 jtag_command_t *jtag_command_queue = NULL;
 124 jtag_command_t **last_comand_pointer = &jtag_command_queue;
 125 jtag_device_t *jtag_devices = NULL;
 126 int jtag_num_devices = 0;
 127 int jtag_ir_scan_size = 0;
 128 enum reset_types jtag_reset_config = RESET_NONE;
 129 enum tap_state cmd_queue_end_state = TAP_TLR;
 130 enum tap_state cmd_queue_cur_state = TAP_TLR;
 131
 132 int jtag_verify_capture_ir = 1;
 133
 134 /* how long the OpenOCD should wait before attempting JTAG communication after reset lines deasserted (in ms) */
 135 int jtag_nsrst_delay = 0; /* default to no nSRST delay */
 136 int jtag_ntrst_delay = 0; /* default to no nTRST delay */
 137
 138 /* maximum number of JTAG devices expected in the chain
 139  */
 140 #define JTAG_MAX_CHAIN_SIZE 20
 141
 142 /* callbacks to inform high-level handlers about JTAG state changes */
 143 jtag_event_callback_t *jtag_event_callbacks;
 144
 145 /* speed in kHz*/
 146 static int speed_khz = 0;
 147 /* flag if the kHz speed was defined */
 148 static int hasKHz = 0;
 149
 150 /* jtag interfaces (parport, FTDI-USB, TI-USB, ...)
 151  */
 152
 153 #if BUILD_ECOSBOARD == 1
 154         extern jtag_interface_t eCosBoard_interface;
 155 #endif
 156
 157 #if BUILD_PARPORT == 1
 158         extern jtag_interface_t parport_interface;
 159 #endif
 160
 161 #if BUILD_DUMMY == 1
 162         extern jtag_interface_t dummy_interface;
 163 #endif
 164
 165 #if BUILD_FT2232_FTD2XX == 1
 166         extern jtag_interface_t ft2232_interface;
 167 #endif
 168
 169 #if BUILD_FT2232_LIBFTDI == 1
 170         extern jtag_interface_t ft2232_interface;
 171 #endif
 172
 173 #if BUILD_AMTJTAGACCEL == 1
 174         extern jtag_interface_t amt_jtagaccel_interface;
 175 #endif
 176
 177 #if BUILD_EP93XX == 1
 178         extern jtag_interface_t ep93xx_interface;
 179 #endif
 180
 181 #if BUILD_AT91RM9200 == 1
 182         extern jtag_interface_t at91rm9200_interface;
 183 #endif
 184
 185 #if BUILD_GW16012 == 1
 186         extern jtag_interface_t gw16012_interface;
 187 #endif
 188
 189 #if BUILD_PRESTO_LIBFTDI == 1 || BUILD_PRESTO_FTD2XX == 1
 190         extern jtag_interface_t presto_interface;
 191 #endif
 192
 193 #if BUILD_USBPROG == 1
 194         extern jtag_interface_t usbprog_interface;
 195 #endif
 196
 197 #if BUILD_JLINK == 1
 198         extern jtag_interface_t jlink_interface;
 199 #endif
 200
 201 jtag_interface_t *jtag_interfaces[] = {
 202 #if BUILD_ECOSBOARD == 1
 203         &eCosBoard_interface,
 204 #endif
 205 #if BUILD_PARPORT == 1
 206         &parport_interface,
 207 #endif
 208 #if BUILD_DUMMY == 1
 209         &dummy_interface,
 210 #endif
 211 #if BUILD_FT2232_FTD2XX == 1
 212         &ft2232_interface,
 213 #endif
 214 #if BUILD_FT2232_LIBFTDI == 1
 215         &ft2232_interface,
 216 #endif
 217 #if BUILD_AMTJTAGACCEL == 1
 218         &amt_jtagaccel_interface,
 219 #endif
 220 #if BUILD_EP93XX == 1
 221         &ep93xx_interface,
 222 #endif
 223 #if BUILD_AT91RM9200 == 1
 224         &at91rm9200_interface,
 225 #endif
 226 #if BUILD_GW16012 == 1
 227         &gw16012_interface,
 228 #endif
 229 #if BUILD_PRESTO_LIBFTDI == 1 || BUILD_PRESTO_FTD2XX == 1
 230         &presto_interface,
 231 #endif
 232 #if BUILD_USBPROG == 1
 233         &usbprog_interface,
 234 #endif
 235 #if BUILD_JLINK == 1
 236         &jlink_interface,
 237 #endif
 238         NULL,
 239 };
 240
 241 jtag_interface_t *jtag = NULL;
 242
 243 /* configuration */
 244 jtag_interface_t *jtag_interface = NULL;
 245 int jtag_speed = 0;
 246
 247
 248
 249 /* forward declarations */
 250 void jtag_add_pathmove(int num_states, enum tap_state *path);
 251 void jtag_add_runtest(int num_cycles, enum tap_state endstate);
 252 void jtag_add_end_state(enum tap_state endstate);
 253 void jtag_add_sleep(u32 us);
 254 int jtag_execute_queue(void);
 255 int jtag_cancel_queue(void);
 256
 257 /* jtag commands */
 258 int handle_interface_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 259 int handle_jtag_speed_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 260 int handle_jtag_khz_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 261 int handle_jtag_device_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 262 int handle_reset_config_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 263 int handle_jtag_nsrst_delay_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 264 int handle_jtag_ntrst_delay_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 265
 266 int handle_scan_chain_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 267
 268 int handle_endstate_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 269 int handle_jtag_reset_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 270 int handle_runtest_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 271 int handle_irscan_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 272 int Jim_Command_drscan(Jim_Interp *interp, int argc, Jim_Obj *const *argv);
 273
 274 int handle_verify_ircapture_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 275
 276 int jtag_register_event_callback(int (*callback)(enum jtag_event event, void *priv), 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         if (*callbacks_p)
 286         {
 287                 while ((*callbacks_p)->next)
 288                         callbacks_p = &((*callbacks_p)->next);
 289                 callbacks_p = &((*callbacks_p)->next);
 290         }
 291
 292         (*callbacks_p) = malloc(sizeof(jtag_event_callback_t));
 293         (*callbacks_p)->callback = callback;
 294         (*callbacks_p)->priv = priv;
 295         (*callbacks_p)->next = NULL;
 296
 297         return ERROR_OK;
 298 }
 299
 300 int jtag_unregister_event_callback(int (*callback)(enum jtag_event event, void *priv))
 301 {
 302         jtag_event_callback_t **callbacks_p = &jtag_event_callbacks;
 303
 304         if (callback == NULL)
 305         {
 306                 return ERROR_INVALID_ARGUMENTS;
 307         }
 308
 309         while (*callbacks_p)
 310         {
 311                 jtag_event_callback_t **next = &((*callbacks_p)->next);
 312                 if ((*callbacks_p)->callback == callback)
 313                 {
 314                         free(*callbacks_p);
 315                         *callbacks_p = *next;
 316                 }
 317                 callbacks_p = next;
 318         }
 319
 320         return ERROR_OK;
 321 }
 322
 323 int jtag_call_event_callbacks(enum jtag_event event)
 324 {
 325         jtag_event_callback_t *callback = jtag_event_callbacks;
 326
 327         LOG_DEBUG("jtag event: %s", jtag_event_strings[event]);
 328
 329         while (callback)
 330         {
 331                 callback->callback(event, callback->priv);
 332                 callback = callback->next;
 333         }
 334
 335         return ERROR_OK;
 336 }
 337
 338 /* returns a pointer to the pointer of the last command in queue
 339  * this may be a pointer to the root pointer (jtag_command_queue)
 340  * or to the next member of the last but one command
 341  */
 342 jtag_command_t** jtag_get_last_command_p(void)
 343 {
 344 /*      jtag_command_t *cmd = jtag_command_queue;
 345
 346         if (cmd)
 347                 while (cmd->next)
 348                         cmd = cmd->next;
 349         else
 350                 return &jtag_command_queue;
 351
 352         return &cmd->next;*/
 353
 354         return last_comand_pointer;
 355 }
 356
 357 /* returns a pointer to the n-th device in the scan chain */
 358 jtag_device_t* jtag_get_device(int num)
 359 {
 360         jtag_device_t *device = jtag_devices;
 361         int i = 0;
 362
 363         while (device)
 364         {
 365                 if (num == i)
 366                         return device;
 367                 device = device->next;
 368                 i++;
 369         }
 370
 371         LOG_ERROR("jtag device number %d not defined", num);
 372         exit(-1);
 373 }
 374
 375 void* cmd_queue_alloc(size_t size)
 376 {
 377         cmd_queue_page_t **p_page = &cmd_queue_pages;
 378         int offset;
 379         u8 *t;
 380
 381         if (*p_page)
 382         {
 383                 while ((*p_page)->next)
 384                         p_page = &((*p_page)->next);
 385                 if (CMD_QUEUE_PAGE_SIZE - (*p_page)->used < size)
 386                         p_page = &((*p_page)->next);
 387         }
 388
 389         if (!*p_page)
 390         {
 391                 *p_page = malloc(sizeof(cmd_queue_page_t));
 392                 (*p_page)->used = 0;
 393                 (*p_page)->address = malloc(CMD_QUEUE_PAGE_SIZE);
 394                 (*p_page)->next = NULL;
 395         }
 396
 397         offset = (*p_page)->used;
 398         (*p_page)->used += size;
 399
 400         t=(u8 *)((*p_page)->address);
 401         return t + offset;
 402 }
 403
 404 void cmd_queue_free()
 405 {
 406         cmd_queue_page_t *page = cmd_queue_pages;
 407
 408         while (page)
 409         {
 410                 cmd_queue_page_t *last = page;
 411                 free(page->address);
 412                 page = page->next;
 413                 free(last);
 414         }
 415
 416         cmd_queue_pages = NULL;
 417 }
 418
 419 static void jtag_prelude1()
 420 {
 421         if (jtag_trst == 1)
 422         {
 423                 LOG_WARNING("JTAG command queued, while TRST is low (TAP in reset)");
 424                 jtag_error=ERROR_JTAG_TRST_ASSERTED;
 425                 return;
 426         }
 427
 428         if (cmd_queue_end_state == TAP_TLR)
 429                 jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
 430 }
 431
 432 static void jtag_prelude(enum tap_state state)
 433 {
 434         jtag_prelude1();
 435
 436         if (state != -1)
 437                 jtag_add_end_state(state);
 438
 439         cmd_queue_cur_state = cmd_queue_end_state;
 440 }
 441
 442 void jtag_add_ir_scan(int num_fields, scan_field_t *fields, enum tap_state state)
 443 {
 444         int retval;
 445
 446         jtag_prelude(state);
 447
 448         retval=interface_jtag_add_ir_scan(num_fields, fields, cmd_queue_end_state);
 449         if (retval!=ERROR_OK)
 450                 jtag_error=retval;
 451 }
 452
 453 int MINIDRIVER(interface_jtag_add_ir_scan)(int num_fields, scan_field_t *fields, enum tap_state state)
 454 {
 455         jtag_command_t **last_cmd;
 456         jtag_device_t *device;
 457         int i, j;
 458         int scan_size = 0;
 459
 460
 461         last_cmd = jtag_get_last_command_p();
 462
 463         /* allocate memory for a new list member */
 464         *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
 465         (*last_cmd)->next = NULL;
 466         last_comand_pointer = &((*last_cmd)->next);
 467         (*last_cmd)->type = JTAG_SCAN;
 468
 469         /* allocate memory for ir scan command */
 470         (*last_cmd)->cmd.scan = cmd_queue_alloc(sizeof(scan_command_t));
 471         (*last_cmd)->cmd.scan->ir_scan = 1;
 472         (*last_cmd)->cmd.scan->num_fields = jtag_num_devices;   /* one field per device */
 473         (*last_cmd)->cmd.scan->fields = cmd_queue_alloc(jtag_num_devices * sizeof(scan_field_t));
 474         (*last_cmd)->cmd.scan->end_state = state;
 475
 476         for (i = 0; i < jtag_num_devices; i++)
 477         {
 478                 int found = 0;
 479                 device = jtag_get_device(i);
 480                 scan_size = device->ir_length;
 481                 (*last_cmd)->cmd.scan->fields[i].device = i;
 482                 (*last_cmd)->cmd.scan->fields[i].num_bits = scan_size;
 483                 (*last_cmd)->cmd.scan->fields[i].in_value = NULL;
 484                 (*last_cmd)->cmd.scan->fields[i].in_handler = NULL;     /* disable verification by default */
 485
 486                 /* search the list */
 487                 for (j = 0; j < num_fields; j++)
 488                 {
 489                         if (i == fields[j].device)
 490                         {
 491                                 found = 1;
 492                                 (*last_cmd)->cmd.scan->fields[i].out_value = buf_cpy(fields[j].out_value, cmd_queue_alloc(CEIL(scan_size, 8)), scan_size);
 493                                 (*last_cmd)->cmd.scan->fields[i].out_mask = buf_cpy(fields[j].out_mask, cmd_queue_alloc(CEIL(scan_size, 8)), scan_size);
 494
 495                                 if (jtag_verify_capture_ir)
 496                                 {
 497                                         if (fields[j].in_handler==NULL)
 498                                         {
 499                                                 jtag_set_check_value((*last_cmd)->cmd.scan->fields+i, device->expected, device->expected_mask, NULL);
 500                                         } else
 501                                         {
 502                                                 (*last_cmd)->cmd.scan->fields[i].in_handler = fields[j].in_handler;
 503                                                 (*last_cmd)->cmd.scan->fields[i].in_handler_priv = fields[j].in_handler_priv;
 504                                                 (*last_cmd)->cmd.scan->fields[i].in_check_value = device->expected;
 505                                                 (*last_cmd)->cmd.scan->fields[i].in_check_mask = device->expected_mask;
 506                                         }
 507                                 }
 508
 509                                 device->bypass = 0;
 510                                 break;
 511                         }
 512                 }
 513
 514                 if (!found)
 515                 {
 516                         /* if a device isn't listed, set it to BYPASS */
 517                         (*last_cmd)->cmd.scan->fields[i].out_value = buf_set_ones(cmd_queue_alloc(CEIL(scan_size, 8)), scan_size);
 518                         (*last_cmd)->cmd.scan->fields[i].out_mask = NULL;
 519                         device->bypass = 1;
 520
 521                 }
 522
 523                 /* update device information */
 524                 buf_cpy((*last_cmd)->cmd.scan->fields[i].out_value, jtag_get_device(i)->cur_instr, scan_size);
 525         }
 526
 527         return ERROR_OK;
 528 }
 529
 530 void jtag_add_plain_ir_scan(int num_fields, scan_field_t *fields, enum tap_state state)
 531 {
 532         int retval;
 533
 534         jtag_prelude(state);
 535
 536         retval=interface_jtag_add_plain_ir_scan(num_fields, fields, cmd_queue_end_state);
 537         if (retval!=ERROR_OK)
 538                 jtag_error=retval;
 539 }
 540
 541 int MINIDRIVER(interface_jtag_add_plain_ir_scan)(int num_fields, scan_field_t *fields, enum tap_state state)
 542 {
 543         int i;
 544         jtag_command_t **last_cmd;
 545
 546         last_cmd = jtag_get_last_command_p();
 547
 548         /* allocate memory for a new list member */
 549         *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
 550         (*last_cmd)->next = NULL;
 551         last_comand_pointer = &((*last_cmd)->next);
 552         (*last_cmd)->type = JTAG_SCAN;
 553
 554         /* allocate memory for ir scan command */
 555         (*last_cmd)->cmd.scan = cmd_queue_alloc(sizeof(scan_command_t));
 556         (*last_cmd)->cmd.scan->ir_scan = 1;
 557         (*last_cmd)->cmd.scan->num_fields = num_fields;
 558         (*last_cmd)->cmd.scan->fields = cmd_queue_alloc(num_fields * sizeof(scan_field_t));
 559         (*last_cmd)->cmd.scan->end_state = state;
 560
 561         for (i = 0; i < num_fields; i++)
 562         {
 563                 int num_bits = fields[i].num_bits;
 564                 int num_bytes = CEIL(fields[i].num_bits, 8);
 565                 (*last_cmd)->cmd.scan->fields[i].device = fields[i].device;
 566                 (*last_cmd)->cmd.scan->fields[i].num_bits = num_bits;
 567                 (*last_cmd)->cmd.scan->fields[i].out_value = buf_cpy(fields[i].out_value, cmd_queue_alloc(num_bytes), num_bits);
 568                 (*last_cmd)->cmd.scan->fields[i].out_mask = buf_cpy(fields[i].out_mask, cmd_queue_alloc(num_bytes), num_bits);
 569                 (*last_cmd)->cmd.scan->fields[i].in_value = fields[i].in_value;
 570                 (*last_cmd)->cmd.scan->fields[i].in_check_value = fields[i].in_check_value;
 571                 (*last_cmd)->cmd.scan->fields[i].in_check_mask = fields[i].in_check_mask;
 572                 (*last_cmd)->cmd.scan->fields[i].in_handler = NULL;
 573                 (*last_cmd)->cmd.scan->fields[i].in_handler_priv = NULL;
 574         }
 575         return ERROR_OK;
 576 }
 577
 578 void jtag_add_dr_scan(int num_fields, scan_field_t *fields, enum tap_state state)
 579 {
 580         int retval;
 581
 582         jtag_prelude(state);
 583
 584         retval=interface_jtag_add_dr_scan(num_fields, fields, cmd_queue_end_state);
 585         if (retval!=ERROR_OK)
 586                 jtag_error=retval;
 587 }
 588
 589 int MINIDRIVER(interface_jtag_add_dr_scan)(int num_fields, scan_field_t *fields, enum tap_state state)
 590 {
 591         int i, j;
 592         int bypass_devices = 0;
 593         int field_count = 0;
 594         int scan_size;
 595
 596         jtag_command_t **last_cmd = jtag_get_last_command_p();
 597         jtag_device_t *device = jtag_devices;
 598
 599         /* count devices in bypass */
 600         while (device)
 601         {
 602                 if (device->bypass)
 603                         bypass_devices++;
 604                 device = device->next;
 605         }
 606         if (bypass_devices >= jtag_num_devices)
 607         {
 608                 LOG_ERROR("all devices in bypass");
 609                 return ERROR_JTAG_DEVICE_ERROR;
 610         }
 611
 612         /* allocate memory for a new list member */
 613         *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
 614         last_comand_pointer = &((*last_cmd)->next);
 615         (*last_cmd)->next = NULL;
 616         (*last_cmd)->type = JTAG_SCAN;
 617
 618         /* allocate memory for dr scan command */
 619         (*last_cmd)->cmd.scan = cmd_queue_alloc(sizeof(scan_command_t));
 620         (*last_cmd)->cmd.scan->ir_scan = 0;
 621         (*last_cmd)->cmd.scan->num_fields = num_fields + bypass_devices;
 622         (*last_cmd)->cmd.scan->fields = cmd_queue_alloc((num_fields + bypass_devices) * sizeof(scan_field_t));
 623         (*last_cmd)->cmd.scan->end_state = state;
 624
 625         for (i = 0; i < jtag_num_devices; i++)
 626         {
 627                 int found = 0;
 628                 (*last_cmd)->cmd.scan->fields[field_count].device = i;
 629
 630                 for (j = 0; j < num_fields; j++)
 631                 {
 632                         if (i == fields[j].device)
 633                         {
 634                                 found = 1;
 635                                 scan_size = fields[j].num_bits;
 636                                 (*last_cmd)->cmd.scan->fields[field_count].num_bits = scan_size;
 637                                 (*last_cmd)->cmd.scan->fields[field_count].out_value = buf_cpy(fields[j].out_value, cmd_queue_alloc(CEIL(scan_size, 8)), scan_size);
 638                                 (*last_cmd)->cmd.scan->fields[field_count].out_mask = buf_cpy(fields[j].out_mask, cmd_queue_alloc(CEIL(scan_size, 8)), scan_size);
 639                                 (*last_cmd)->cmd.scan->fields[field_count].in_value = fields[j].in_value;
 640                                 (*last_cmd)->cmd.scan->fields[field_count].in_check_value = fields[j].in_check_value;
 641                                 (*last_cmd)->cmd.scan->fields[field_count].in_check_mask = fields[j].in_check_mask;
 642                                 (*last_cmd)->cmd.scan->fields[field_count].in_handler = fields[j].in_handler;
 643                                 (*last_cmd)->cmd.scan->fields[field_count++].in_handler_priv = fields[j].in_handler_priv;
 644                         }
 645                 }
 646                 if (!found)
 647                 {
 648 #ifdef _DEBUG_JTAG_IO_
 649                         /* if a device isn't listed, the BYPASS register should be selected */
 650                         if (!jtag_get_device(i)->bypass)
 651                         {
 652                                 LOG_ERROR("BUG: no scan data for a device not in BYPASS");
 653                                 exit(-1);
 654                         }
 655 #endif
 656                         /* program the scan field to 1 bit length, and ignore it's value */
 657                         (*last_cmd)->cmd.scan->fields[field_count].num_bits = 1;
 658                         (*last_cmd)->cmd.scan->fields[field_count].out_value = NULL;
 659                         (*last_cmd)->cmd.scan->fields[field_count].out_mask = NULL;
 660                         (*last_cmd)->cmd.scan->fields[field_count].in_value = NULL;
 661                         (*last_cmd)->cmd.scan->fields[field_count].in_check_value = NULL;
 662                         (*last_cmd)->cmd.scan->fields[field_count].in_check_mask = NULL;
 663                         (*last_cmd)->cmd.scan->fields[field_count].in_handler = NULL;
 664                         (*last_cmd)->cmd.scan->fields[field_count++].in_handler_priv = NULL;
 665                 }
 666                 else
 667                 {
 668 #ifdef _DEBUG_JTAG_IO_
 669                         /* if a device is listed, the BYPASS register must not be selected */
 670                         if (jtag_get_device(i)->bypass)
 671                         {
 672                                 LOG_ERROR("BUG: scan data for a device in BYPASS");
 673                                 exit(-1);
 674                         }
 675 #endif
 676                 }
 677         }
 678         return ERROR_OK;
 679 }
 680
 681 void MINIDRIVER(interface_jtag_add_dr_out)(int device_num,
 682                 int num_fields,
 683                 const int *num_bits,
 684                 const u32 *value,
 685                 enum tap_state end_state)
 686 {
 687         int i;
 688         int field_count = 0;
 689         int scan_size;
 690         int bypass_devices = 0;
 691
 692         jtag_command_t **last_cmd = jtag_get_last_command_p();
 693         jtag_device_t *device = jtag_devices;
 694         /* count devices in bypass */
 695         while (device)
 696         {
 697                 if (device->bypass)
 698                         bypass_devices++;
 699                 device = device->next;
 700         }
 701
 702         /* allocate memory for a new list member */
 703         *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
 704         last_comand_pointer = &((*last_cmd)->next);
 705         (*last_cmd)->next = NULL;
 706         (*last_cmd)->type = JTAG_SCAN;
 707
 708         /* allocate memory for dr scan command */
 709         (*last_cmd)->cmd.scan = cmd_queue_alloc(sizeof(scan_command_t));
 710         (*last_cmd)->cmd.scan->ir_scan = 0;
 711         (*last_cmd)->cmd.scan->num_fields = num_fields + bypass_devices;
 712         (*last_cmd)->cmd.scan->fields = cmd_queue_alloc((num_fields + bypass_devices) * sizeof(scan_field_t));
 713         (*last_cmd)->cmd.scan->end_state = end_state;
 714
 715         for (i = 0; i < jtag_num_devices; i++)
 716         {
 717                 (*last_cmd)->cmd.scan->fields[field_count].device = i;
 718
 719                 if (i == device_num)
 720                 {
 721                         int j;
 722 #ifdef _DEBUG_JTAG_IO_
 723                         /* if a device is listed, the BYPASS register must not be selected */
 724                         if (jtag_get_device(i)->bypass)
 725                         {
 726                                 LOG_ERROR("BUG: scan data for a device in BYPASS");
 727                                 exit(-1);
 728                         }
 729 #endif
 730                         for (j = 0; j < num_fields; j++)
 731                         {
 732                                 u8 out_value[4];
 733                                 scan_size = num_bits[j];
 734                                 buf_set_u32(out_value, 0, scan_size, value[j]);
 735                                 (*last_cmd)->cmd.scan->fields[field_count].num_bits = scan_size;
 736                                 (*last_cmd)->cmd.scan->fields[field_count].out_value = buf_cpy(out_value, cmd_queue_alloc(CEIL(scan_size, 8)), scan_size);
 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                 } else
 745                 {
 746 #ifdef _DEBUG_JTAG_IO_
 747                         /* if a device isn't listed, the BYPASS register should be selected */
 748                         if (!jtag_get_device(i)->bypass)
 749                         {
 750                                 LOG_ERROR("BUG: no scan data for a device not in BYPASS");
 751                                 exit(-1);
 752                         }
 753 #endif
 754                         /* program the scan field to 1 bit length, and ignore it's value */
 755                         (*last_cmd)->cmd.scan->fields[field_count].num_bits = 1;
 756                         (*last_cmd)->cmd.scan->fields[field_count].out_value = NULL;
 757                         (*last_cmd)->cmd.scan->fields[field_count].out_mask = NULL;
 758                         (*last_cmd)->cmd.scan->fields[field_count].in_value = NULL;
 759                         (*last_cmd)->cmd.scan->fields[field_count].in_check_value = NULL;
 760                         (*last_cmd)->cmd.scan->fields[field_count].in_check_mask = NULL;
 761                         (*last_cmd)->cmd.scan->fields[field_count].in_handler = NULL;
 762                         (*last_cmd)->cmd.scan->fields[field_count++].in_handler_priv = NULL;
 763                 }
 764         }
 765 }
 766
 767 void jtag_add_plain_dr_scan(int num_fields, scan_field_t *fields, enum tap_state state)
 768 {
 769         int retval;
 770
 771         jtag_prelude(state);
 772
 773         retval=interface_jtag_add_plain_dr_scan(num_fields, fields, cmd_queue_end_state);
 774         if (retval!=ERROR_OK)
 775                 jtag_error=retval;
 776 }
 777
 778 int MINIDRIVER(interface_jtag_add_plain_dr_scan)(int num_fields, scan_field_t *fields, enum tap_state state)
 779 {
 780         int i;
 781         jtag_command_t **last_cmd = jtag_get_last_command_p();
 782
 783         /* allocate memory for a new list member */
 784         *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
 785         last_comand_pointer = &((*last_cmd)->next);
 786         (*last_cmd)->next = NULL;
 787         (*last_cmd)->type = JTAG_SCAN;
 788
 789         /* allocate memory for scan command */
 790         (*last_cmd)->cmd.scan = cmd_queue_alloc(sizeof(scan_command_t));
 791         (*last_cmd)->cmd.scan->ir_scan = 0;
 792         (*last_cmd)->cmd.scan->num_fields = num_fields;
 793         (*last_cmd)->cmd.scan->fields = cmd_queue_alloc(num_fields * sizeof(scan_field_t));
 794         (*last_cmd)->cmd.scan->end_state = state;
 795
 796         for (i = 0; i < num_fields; i++)
 797         {
 798                 int num_bits = fields[i].num_bits;
 799                 int num_bytes = CEIL(fields[i].num_bits, 8);
 800                 (*last_cmd)->cmd.scan->fields[i].device = fields[i].device;
 801                 (*last_cmd)->cmd.scan->fields[i].num_bits = num_bits;
 802                 (*last_cmd)->cmd.scan->fields[i].out_value = buf_cpy(fields[i].out_value, cmd_queue_alloc(num_bytes), num_bits);
 803                 (*last_cmd)->cmd.scan->fields[i].out_mask = buf_cpy(fields[i].out_mask, cmd_queue_alloc(num_bytes), num_bits);
 804                 (*last_cmd)->cmd.scan->fields[i].in_value = fields[i].in_value;
 805                 (*last_cmd)->cmd.scan->fields[i].in_check_value = fields[i].in_check_value;
 806                 (*last_cmd)->cmd.scan->fields[i].in_check_mask = fields[i].in_check_mask;
 807                 (*last_cmd)->cmd.scan->fields[i].in_handler = fields[i].in_handler;
 808                 (*last_cmd)->cmd.scan->fields[i].in_handler_priv = fields[i].in_handler_priv;
 809         }
 810
 811         return ERROR_OK;
 812 }
 813
 814 void jtag_add_tlr()
 815 {
 816         jtag_prelude(TAP_TLR);
 817
 818         int retval;
 819         retval=interface_jtag_add_tlr();
 820         if (retval!=ERROR_OK)
 821                 jtag_error=retval;
 822 }
 823
 824 int MINIDRIVER(interface_jtag_add_tlr)()
 825 {
 826         enum tap_state state = TAP_TLR;
 827         jtag_command_t **last_cmd = jtag_get_last_command_p();
 828
 829         /* allocate memory for a new list member */
 830         *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
 831         last_comand_pointer = &((*last_cmd)->next);
 832         (*last_cmd)->next = NULL;
 833         (*last_cmd)->type = JTAG_STATEMOVE;
 834
 835         (*last_cmd)->cmd.statemove = cmd_queue_alloc(sizeof(statemove_command_t));
 836         (*last_cmd)->cmd.statemove->end_state = state;
 837
 838
 839         return ERROR_OK;
 840 }
 841
 842 void jtag_add_pathmove(int num_states, enum tap_state *path)
 843 {
 844         enum tap_state cur_state=cmd_queue_cur_state;
 845         int i;
 846         int retval;
 847
 848         /* the last state has to be a stable state */
 849         if (tap_move_map[path[num_states - 1]] == -1)
 850         {
 851                 LOG_ERROR("BUG: TAP path doesn't finish in a stable state");
 852                 exit(-1);
 853         }
 854
 855         for (i=0; i<num_states; i++)
 856         {
 857                 if ((tap_transitions[cur_state].low != path[i])&&
 858                                 (tap_transitions[cur_state].high != path[i]))
 859                 {
 860                         LOG_ERROR("BUG: %s -> %s isn't a valid TAP transition", tap_state_strings[cur_state], tap_state_strings[path[i]]);
 861                         exit(-1);
 862                 }
 863                 cur_state = path[i];
 864         }
 865
 866         jtag_prelude1();
 867
 868
 869         retval=interface_jtag_add_pathmove(num_states, path);
 870         cmd_queue_cur_state = path[num_states - 1];
 871         if (retval!=ERROR_OK)
 872                 jtag_error=retval;
 873 }
 874
 875 int MINIDRIVER(interface_jtag_add_pathmove)(int num_states, enum tap_state *path)
 876 {
 877         jtag_command_t **last_cmd = jtag_get_last_command_p();
 878         int i;
 879
 880         /* allocate memory for a new list member */
 881         *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
 882         last_comand_pointer = &((*last_cmd)->next);
 883         (*last_cmd)->next = NULL;
 884         (*last_cmd)->type = JTAG_PATHMOVE;
 885
 886         (*last_cmd)->cmd.pathmove = cmd_queue_alloc(sizeof(pathmove_command_t));
 887         (*last_cmd)->cmd.pathmove->num_states = num_states;
 888         (*last_cmd)->cmd.pathmove->path = cmd_queue_alloc(sizeof(enum tap_state) * num_states);
 889
 890         for (i = 0; i < num_states; i++)
 891                 (*last_cmd)->cmd.pathmove->path[i] = path[i];
 892
 893         return ERROR_OK;
 894 }
 895
 896 int MINIDRIVER(interface_jtag_add_runtest)(int num_cycles, enum tap_state state)
 897 {
 898         jtag_command_t **last_cmd = jtag_get_last_command_p();
 899
 900         /* allocate memory for a new list member */
 901         *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
 902         (*last_cmd)->next = NULL;
 903         last_comand_pointer = &((*last_cmd)->next);
 904         (*last_cmd)->type = JTAG_RUNTEST;
 905
 906         (*last_cmd)->cmd.runtest = cmd_queue_alloc(sizeof(runtest_command_t));
 907         (*last_cmd)->cmd.runtest->num_cycles = num_cycles;
 908         (*last_cmd)->cmd.runtest->end_state = state;
 909
 910         return ERROR_OK;
 911 }
 912
 913 void jtag_add_runtest(int num_cycles, enum tap_state state)
 914 {
 915         int retval;
 916
 917         jtag_prelude(state);
 918
 919         /* executed by sw or hw fifo */
 920         retval=interface_jtag_add_runtest(num_cycles, cmd_queue_end_state);
 921         if (retval!=ERROR_OK)
 922                 jtag_error=retval;
 923 }
 924
 925 void jtag_add_reset(int req_tlr_or_trst, int req_srst)
 926 {
 927         int trst_with_tlr = 0;
 928         int retval;
 929
 930         /* FIX!!! there are *many* different cases here. A better
 931          * approach is needed for legal combinations of transitions...
 932          */
 933         if ((jtag_reset_config & RESET_HAS_SRST)&&
 934                         (jtag_reset_config & RESET_HAS_TRST)&&
 935                         ((jtag_reset_config & RESET_SRST_PULLS_TRST)==0))
 936         {
 937                 if (((req_tlr_or_trst&&!jtag_trst)||
 938                                 (!req_tlr_or_trst&&jtag_trst))&&
 939                                 ((req_srst&&!jtag_srst)||
 940                                                 (!req_srst&&jtag_srst)))
 941                 {
 942                         /* FIX!!! srst_pulls_trst allows 1,1 => 0,0 transition.... */
 943                         //LOG_ERROR("BUG: transition of req_tlr_or_trst and req_srst in the same jtag_add_reset() call is undefined");
 944                 }
 945         }
 946
 947         /* Make sure that jtag_reset_config allows the requested reset */
 948         /* if SRST pulls TRST, we can't fulfill srst == 1 with trst == 0 */
 949         if (((jtag_reset_config & RESET_SRST_PULLS_TRST) && (req_srst == 1)) && (!req_tlr_or_trst))
 950         {
 951                 LOG_ERROR("BUG: requested reset would assert trst");
 952                 jtag_error=ERROR_FAIL;
 953                 return;
 954         }
 955
 956         /* if TRST pulls SRST, we reset with TAP T-L-R */
 957         if (((jtag_reset_config & RESET_TRST_PULLS_SRST) && (req_tlr_or_trst)) && (req_srst == 0))
 958         {
 959                 trst_with_tlr = 1;
 960         }
 961
 962         if (req_srst && !(jtag_reset_config & RESET_HAS_SRST))
 963         {
 964                 LOG_ERROR("BUG: requested SRST assertion, but the current configuration doesn't support this");
 965                 jtag_error=ERROR_FAIL;
 966                 return;
 967         }
 968
 969         if (req_tlr_or_trst)
 970         {
 971                 if (!trst_with_tlr && (jtag_reset_config & RESET_HAS_TRST))
 972                 {
 973                         jtag_trst = 1;
 974                 } else
 975                 {
 976                         trst_with_tlr = 1;
 977                 }
 978         } else
 979         {
 980                 jtag_trst = 0;
 981         }
 982
 983         jtag_srst = req_srst;
 984
 985         retval = interface_jtag_add_reset(jtag_trst, jtag_srst);
 986         if (retval!=ERROR_OK)
 987         {
 988                 jtag_error=retval;
 989                 return;
 990         }
 991
 992         if (jtag_srst)
 993         {
 994                 LOG_DEBUG("SRST line asserted");
 995         }
 996         else
 997         {
 998                 LOG_DEBUG("SRST line released");
 999                 if (jtag_nsrst_delay)
1000                         jtag_add_sleep(jtag_nsrst_delay * 1000);
1001         }
1002
1003         if (trst_with_tlr)
1004         {
1005                 LOG_DEBUG("JTAG reset with TLR instead of TRST");
1006                 jtag_add_end_state(TAP_TLR);
1007                 jtag_add_tlr();
1008                 jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
1009                 return;
1010         }
1011
1012         if (jtag_trst)
1013         {
1014                 /* we just asserted nTRST, so we're now in Test-Logic-Reset,
1015                  * and inform possible listeners about this
1016                  */
1017                 LOG_DEBUG("TRST line asserted");
1018                 cmd_queue_cur_state = TAP_TLR;
1019                 jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
1020         }
1021         else
1022         {
1023                 if (jtag_ntrst_delay)
1024                         jtag_add_sleep(jtag_ntrst_delay * 1000);
1025         }
1026 }
1027
1028 int MINIDRIVER(interface_jtag_add_reset)(int req_trst, int req_srst)
1029 {
1030         jtag_command_t **last_cmd = jtag_get_last_command_p();
1031
1032         /* allocate memory for a new list member */
1033         *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
1034         (*last_cmd)->next = NULL;
1035         last_comand_pointer = &((*last_cmd)->next);
1036         (*last_cmd)->type = JTAG_RESET;
1037
1038         (*last_cmd)->cmd.reset = cmd_queue_alloc(sizeof(reset_command_t));
1039         (*last_cmd)->cmd.reset->trst = req_trst;
1040         (*last_cmd)->cmd.reset->srst = req_srst;
1041
1042         return ERROR_OK;
1043 }
1044
1045 void jtag_add_end_state(enum tap_state state)
1046 {
1047         cmd_queue_end_state = state;
1048         if ((cmd_queue_end_state == TAP_SD)||(cmd_queue_end_state == TAP_SI))
1049         {
1050                 LOG_ERROR("BUG: TAP_SD/SI can't be end state. Calling code should use a larger scan field");
1051         }
1052 }
1053
1054 int MINIDRIVER(interface_jtag_add_sleep)(u32 us)
1055 {
1056         jtag_command_t **last_cmd = jtag_get_last_command_p();
1057
1058         /* allocate memory for a new list member */
1059         *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
1060         (*last_cmd)->next = NULL;
1061         last_comand_pointer = &((*last_cmd)->next);
1062         (*last_cmd)->type = JTAG_SLEEP;
1063
1064         (*last_cmd)->cmd.sleep = cmd_queue_alloc(sizeof(sleep_command_t));
1065         (*last_cmd)->cmd.sleep->us = us;
1066
1067         return ERROR_OK;
1068 }
1069
1070 void jtag_add_sleep(u32 us)
1071 {
1072         keep_alive(); /* we might be running on a very slow JTAG clk */
1073         int retval=interface_jtag_add_sleep(us);
1074         if (retval!=ERROR_OK)
1075                 jtag_error=retval;
1076         return;
1077 }
1078
1079 int jtag_scan_size(scan_command_t *cmd)
1080 {
1081         int bit_count = 0;
1082         int i;
1083
1084         /* count bits in scan command */
1085         for (i = 0; i < cmd->num_fields; i++)
1086         {
1087                 bit_count += cmd->fields[i].num_bits;
1088         }
1089
1090         return bit_count;
1091 }
1092
1093 int jtag_build_buffer(scan_command_t *cmd, u8 **buffer)
1094 {
1095         int bit_count = 0;
1096         int i;
1097
1098         bit_count = jtag_scan_size(cmd);
1099         *buffer = malloc(CEIL(bit_count, 8));
1100
1101         bit_count = 0;
1102
1103         for (i = 0; i < cmd->num_fields; i++)
1104         {
1105                 if (cmd->fields[i].out_value)
1106                 {
1107 #ifdef _DEBUG_JTAG_IO_
1108                         char* char_buf = buf_to_str(cmd->fields[i].out_value, (cmd->fields[i].num_bits > 64) ? 64 : cmd->fields[i].num_bits, 16);
1109 #endif
1110                         buf_set_buf(cmd->fields[i].out_value, 0, *buffer, bit_count, cmd->fields[i].num_bits);
1111 #ifdef _DEBUG_JTAG_IO_
1112                         LOG_DEBUG("fields[%i].out_value: 0x%s", i, char_buf);
1113                         free(char_buf);
1114 #endif
1115                 }
1116
1117                 bit_count += cmd->fields[i].num_bits;
1118         }
1119
1120         return bit_count;
1121 }
1122
1123 int jtag_read_buffer(u8 *buffer, scan_command_t *cmd)
1124 {
1125         int i;
1126         int bit_count = 0;
1127         int retval;
1128
1129         /* we return ERROR_OK, unless a check fails, or a handler reports a problem */
1130         retval = ERROR_OK;
1131
1132         for (i = 0; i < cmd->num_fields; i++)
1133         {
1134                 /* if neither in_value nor in_handler
1135                  * are specified we don't have to examine this field
1136                  */
1137                 if (cmd->fields[i].in_value || cmd->fields[i].in_handler)
1138                 {
1139                         int num_bits = cmd->fields[i].num_bits;
1140                         u8 *captured = buf_set_buf(buffer, bit_count, malloc(CEIL(num_bits, 8)), 0, num_bits);
1141
1142 #ifdef _DEBUG_JTAG_IO_
1143                         char *char_buf;
1144
1145                         char_buf = buf_to_str(captured, (num_bits > 64) ? 64 : num_bits, 16);
1146                         LOG_DEBUG("fields[%i].in_value: 0x%s", i, char_buf);
1147                         free(char_buf);
1148 #endif
1149
1150                         if (cmd->fields[i].in_value)
1151                         {
1152                                 buf_cpy(captured, cmd->fields[i].in_value, num_bits);
1153
1154                                 if (cmd->fields[i].in_handler)
1155                                 {
1156                                         if (cmd->fields[i].in_handler(cmd->fields[i].in_value, cmd->fields[i].in_handler_priv, cmd->fields+i) != ERROR_OK)
1157                                         {
1158                                                 LOG_WARNING("in_handler reported a failed check");
1159                                                 retval = ERROR_JTAG_QUEUE_FAILED;
1160                                         }
1161                                 }
1162                         }
1163
1164                         /* no in_value specified, but a handler takes care of the scanned data */
1165                         if (cmd->fields[i].in_handler && (!cmd->fields[i].in_value))
1166                         {
1167                                 if (cmd->fields[i].in_handler(captured, cmd->fields[i].in_handler_priv, cmd->fields+i) != ERROR_OK)
1168                                 {
1169                                         /* We're going to call the error:handler later, but if the in_handler
1170                                          * reported an error we report this failure upstream
1171                                          */
1172                                         LOG_WARNING("in_handler reported a failed check");
1173                                         retval = ERROR_JTAG_QUEUE_FAILED;
1174                                 }
1175                         }
1176
1177                         free(captured);
1178                 }
1179                 bit_count += cmd->fields[i].num_bits;
1180         }
1181
1182         return retval;
1183 }
1184
1185 int jtag_check_value(u8 *captured, void *priv, scan_field_t *field)
1186 {
1187         int retval = ERROR_OK;
1188         int num_bits = field->num_bits;
1189
1190         int compare_failed = 0;
1191
1192         if (field->in_check_mask)
1193                 compare_failed = buf_cmp_mask(captured, field->in_check_value, field->in_check_mask, num_bits);
1194         else
1195                 compare_failed = buf_cmp(captured, field->in_check_value, num_bits);
1196
1197         if (compare_failed)
1198                 {
1199                 /* An error handler could have caught the failing check
1200                  * only report a problem when there wasn't a handler, or if the handler
1201                  * acknowledged the error
1202                  */
1203                 if (compare_failed)
1204                 {
1205                         char *captured_char = buf_to_str(captured, (num_bits > 64) ? 64 : num_bits, 16);
1206                         char *in_check_value_char = buf_to_str(field->in_check_value, (num_bits > 64) ? 64 : num_bits, 16);
1207
1208                         if (field->in_check_mask)
1209                         {
1210                                 char *in_check_mask_char;
1211                                 in_check_mask_char = buf_to_str(field->in_check_mask, (num_bits > 64) ? 64 : num_bits, 16);
1212                                 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);
1213                                 free(in_check_mask_char);
1214                         }
1215                         else
1216                         {
1217                                 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);
1218                         }
1219
1220                         free(captured_char);
1221                         free(in_check_value_char);
1222
1223                         retval = ERROR_JTAG_QUEUE_FAILED;
1224                 }
1225
1226         }
1227         return retval;
1228 }
1229
1230 /*
1231   set up checking of this field using the in_handler. The values passed in must be valid until
1232   after jtag_execute() has completed.
1233  */
1234 void jtag_set_check_value(scan_field_t *field, u8 *value, u8 *mask, error_handler_t *in_error_handler)
1235 {
1236         if (value)
1237                 field->in_handler = jtag_check_value;
1238         else
1239                 field->in_handler = NULL;       /* No check, e.g. embeddedice uses value==NULL to indicate no check */
1240         field->in_handler_priv = NULL;
1241         field->in_check_value = value;
1242         field->in_check_mask = mask;
1243 }
1244
1245 enum scan_type jtag_scan_type(scan_command_t *cmd)
1246 {
1247         int i;
1248         int type = 0;
1249
1250         for (i = 0; i < cmd->num_fields; i++)
1251         {
1252                 if (cmd->fields[i].in_value || cmd->fields[i].in_handler)
1253                         type |= SCAN_IN;
1254                 if (cmd->fields[i].out_value)
1255                         type |= SCAN_OUT;
1256         }
1257
1258         return type;
1259 }
1260
1261 int MINIDRIVER(interface_jtag_execute_queue)(void)
1262 {
1263         int retval;
1264
1265         if (jtag==NULL)
1266         {
1267                 LOG_ERROR("No JTAG interface configured yet. Issue 'init' command in startup scripts before communicating with targets.");
1268                 return ERROR_FAIL;
1269         }
1270
1271         retval = jtag->execute_queue();
1272
1273         cmd_queue_free();
1274
1275         jtag_command_queue = NULL;
1276         last_comand_pointer = &jtag_command_queue;
1277
1278         return retval;
1279 }
1280
1281 int jtag_execute_queue(void)
1282 {
1283         int retval=interface_jtag_execute_queue();
1284         if (retval==ERROR_OK)
1285         {
1286                 retval=jtag_error;
1287         }
1288         jtag_error=ERROR_OK;
1289         return retval;
1290 }
1291
1292 int jtag_reset_callback(enum jtag_event event, void *priv)
1293 {
1294         jtag_device_t *device = priv;
1295
1296         LOG_DEBUG("-");
1297
1298         if (event == JTAG_TRST_ASSERTED)
1299         {
1300                 buf_set_ones(device->cur_instr, device->ir_length);
1301                 device->bypass = 1;
1302         }
1303
1304         return ERROR_OK;
1305 }
1306
1307 void jtag_sleep(u32 us)
1308 {
1309         usleep(us);
1310 }
1311
1312 /* Try to examine chain layout according to IEEE 1149.1 §12
1313  */
1314 int jtag_examine_chain()
1315 {
1316         jtag_device_t *device = jtag_devices;
1317         scan_field_t field;
1318         u8 idcode_buffer[JTAG_MAX_CHAIN_SIZE * 4];
1319         int i;
1320         int bit_count;
1321         int device_count = 0;
1322         u8 zero_check = 0x0;
1323         u8 one_check = 0xff;
1324
1325         field.device = 0;
1326         field.num_bits = sizeof(idcode_buffer) * 8;
1327         field.out_value = idcode_buffer;
1328         field.out_mask = NULL;
1329         field.in_value = idcode_buffer;
1330         field.in_check_value = NULL;
1331         field.in_check_mask = NULL;
1332         field.in_handler = NULL;
1333         field.in_handler_priv = NULL;
1334
1335         for (i = 0; i < JTAG_MAX_CHAIN_SIZE; i++)
1336         {
1337                 buf_set_u32(idcode_buffer, i * 32, 32, 0x000000FF);
1338         }
1339
1340         jtag_add_plain_dr_scan(1, &field, TAP_TLR);
1341         jtag_execute_queue();
1342
1343         for (i = 0; i < JTAG_MAX_CHAIN_SIZE * 4; i++)
1344         {
1345                 zero_check |= idcode_buffer[i];
1346                 one_check &= idcode_buffer[i];
1347         }
1348
1349         /* if there wasn't a single non-zero bit or if all bits were one, the scan isn't valid */
1350         if ((zero_check == 0x00) || (one_check == 0xff))
1351         {
1352                 LOG_ERROR("JTAG communication failure, check connection, JTAG interface, target power etc.");
1353                 return ERROR_JTAG_INIT_FAILED;
1354         }
1355
1356         for (bit_count = 0; bit_count < (JTAG_MAX_CHAIN_SIZE * 32) - 31;)
1357         {
1358                 u32 idcode = buf_get_u32(idcode_buffer, bit_count, 32);
1359                 if ((idcode & 1) == 0)
1360                 {
1361                         /* LSB must not be 0, this indicates a device in bypass */
1362                         device_count++;
1363
1364                         LOG_WARNING("Device was in bypass after TRST/TMS reset");
1365
1366                         bit_count += 1;
1367                 }
1368                 else
1369                 {
1370                         u32 manufacturer;
1371                         u32 part;
1372                         u32 version;
1373
1374                         if (idcode == 0x000000FF)
1375                         {
1376                                 int unexpected=0;
1377                                 /* End of chain (invalid manufacturer ID)
1378                                  *
1379                                  * The JTAG examine is the very first thing that happens
1380                                  *
1381                                  * A single JTAG device requires only 64 bits to be read back correctly.
1382                                  *
1383                                  * The code below adds a check that the rest of the data scanned (640 bits)
1384                                  * are all as expected. This helps diagnose/catch problems with the JTAG chain
1385                                  *
1386                                  * earlier and gives more helpful/explicit error messages.
1387                                  */
1388                                 for (bit_count += 32; bit_count < (JTAG_MAX_CHAIN_SIZE * 32) - 31;bit_count += 32)
1389                                 {
1390                                         idcode = buf_get_u32(idcode_buffer, bit_count, 32);
1391                                         if (unexpected||(idcode != 0x000000FF))
1392                                         {
1393                                                 LOG_WARNING("Unexpected idcode after end of chain! %d 0x%08x", bit_count, idcode);
1394                                                 unexpected = 1;
1395                                         }
1396                                 }
1397
1398                                 break;
1399                         }
1400
1401                         if (device)
1402                         {
1403                                 device->idcode = idcode;
1404                                 device = device->next;
1405                         }
1406                         device_count++;
1407
1408                         manufacturer = (idcode & 0xffe) >> 1;
1409                         part = (idcode & 0xffff000) >> 12;
1410                         version = (idcode & 0xf0000000) >> 28;
1411
1412                         LOG_INFO("JTAG device found: 0x%8.8x (Manufacturer: 0x%3.3x, Part: 0x%4.4x, Version: 0x%1.1x)",
1413                                 idcode, manufacturer, part, version);
1414
1415                         bit_count += 32;
1416                 }
1417         }
1418
1419         /* see if number of discovered devices matches configuration */
1420         if (device_count != jtag_num_devices)
1421         {
1422                 LOG_ERROR("number of discovered devices in JTAG chain (%i) doesn't match configuration (%i)",
1423                                 device_count, jtag_num_devices);
1424                 LOG_ERROR("check the config file and ensure proper JTAG communication (connections, speed, ...)");
1425                 return ERROR_JTAG_INIT_FAILED;
1426         }
1427
1428         return ERROR_OK;
1429 }
1430
1431 int jtag_validate_chain()
1432 {
1433         jtag_device_t *device = jtag_devices;
1434         int total_ir_length = 0;
1435         u8 *ir_test = NULL;
1436         scan_field_t field;
1437         int chain_pos = 0;
1438
1439         while (device)
1440         {
1441                 total_ir_length += device->ir_length;
1442                 device = device->next;
1443         }
1444
1445         total_ir_length += 2;
1446         ir_test = malloc(CEIL(total_ir_length, 8));
1447         buf_set_ones(ir_test, total_ir_length);
1448
1449         field.device = 0;
1450         field.num_bits = total_ir_length;
1451         field.out_value = ir_test;
1452         field.out_mask = NULL;
1453         field.in_value = ir_test;
1454         field.in_check_value = NULL;
1455         field.in_check_mask = NULL;
1456         field.in_handler = NULL;
1457         field.in_handler_priv = NULL;
1458
1459         jtag_add_plain_ir_scan(1, &field, TAP_TLR);
1460         jtag_execute_queue();
1461
1462         device = jtag_devices;
1463         while (device)
1464         {
1465                 if (buf_get_u32(ir_test, chain_pos, 2) != 0x1)
1466                 {
1467                         char *cbuf = buf_to_str(ir_test, total_ir_length, 16);
1468                         LOG_ERROR("Error validating JTAG scan chain, IR mismatch, scan returned 0x%s", cbuf);
1469                         free(cbuf);
1470                         free(ir_test);
1471                         return ERROR_JTAG_INIT_FAILED;
1472                 }
1473                 chain_pos += device->ir_length;
1474                 device = device->next;
1475         }
1476
1477         if (buf_get_u32(ir_test, chain_pos, 2) != 0x3)
1478         {
1479                 char *cbuf = buf_to_str(ir_test, total_ir_length, 16);
1480                 LOG_ERROR("Error validating JTAG scan chain, IR mismatch, scan returned 0x%s", cbuf);
1481                 free(cbuf);
1482                 free(ir_test);
1483                 return ERROR_JTAG_INIT_FAILED;
1484         }
1485
1486         free(ir_test);
1487
1488         return ERROR_OK;
1489 }
1490
1491 int jtag_register_commands(struct command_context_s *cmd_ctx)
1492 {
1493         register_command(cmd_ctx, NULL, "interface", handle_interface_command,
1494                 COMMAND_CONFIG, NULL);
1495         register_command(cmd_ctx, NULL, "jtag_speed", handle_jtag_speed_command,
1496                 COMMAND_ANY, "set jtag speed (if supported)");
1497         register_command(cmd_ctx, NULL, "jtag_khz", handle_jtag_khz_command,
1498                 COMMAND_ANY, "same as jtag_speed, except it takes maximum khz as arguments. 0 KHz = RTCK.");
1499         register_command(cmd_ctx, NULL, "jtag_device", handle_jtag_device_command,
1500                 COMMAND_CONFIG, "jtag_device <ir_length> <ir_expected> <ir_mask>");
1501         register_command(cmd_ctx, NULL, "reset_config", handle_reset_config_command,
1502                 COMMAND_CONFIG, NULL);
1503         register_command(cmd_ctx, NULL, "jtag_nsrst_delay", handle_jtag_nsrst_delay_command,
1504                 COMMAND_ANY, "jtag_nsrst_delay <ms> - delay after deasserting srst in ms");
1505         register_command(cmd_ctx, NULL, "jtag_ntrst_delay", handle_jtag_ntrst_delay_command,
1506                 COMMAND_ANY, "jtag_ntrst_delay <ms> - delay after deasserting trst in ms");
1507
1508         register_command(cmd_ctx, NULL, "scan_chain", handle_scan_chain_command,
1509                 COMMAND_EXEC, "print current scan chain configuration");
1510
1511         register_command(cmd_ctx, NULL, "endstate", handle_endstate_command,
1512                 COMMAND_EXEC, "finish JTAG operations in <tap_state>");
1513         register_command(cmd_ctx, NULL, "jtag_reset", handle_jtag_reset_command,
1514                 COMMAND_EXEC, "toggle reset lines <trst> <srst>");
1515         register_command(cmd_ctx, NULL, "runtest", handle_runtest_command,
1516                 COMMAND_EXEC, "move to Run-Test/Idle, and execute <num_cycles>");
1517         register_command(cmd_ctx, NULL, "irscan", handle_irscan_command,
1518                 COMMAND_EXEC, "execute IR scan <device> <instr> [dev2] [instr2] ...");
1519         register_jim(cmd_ctx, "drscan", Jim_Command_drscan, "execute DR scan <device> <num_bits> <value> <num_bits1> <value2> ...");
1520
1521         register_command(cmd_ctx, NULL, "verify_ircapture", handle_verify_ircapture_command,
1522                 COMMAND_ANY, "verify value captured during Capture-IR <enable|disable>");
1523         return ERROR_OK;
1524 }
1525
1526 int jtag_interface_init(struct command_context_s *cmd_ctx)
1527 {
1528         if (jtag)
1529                 return ERROR_OK;
1530
1531         if (!jtag_interface)
1532         {
1533                 /* nothing was previously specified by "interface" command */
1534                 LOG_ERROR("JTAG interface has to be specified, see \"interface\" command");
1535                 return ERROR_JTAG_INVALID_INTERFACE;
1536         }
1537         if(hasKHz)
1538         {
1539                 jtag_interface->khz(speed_khz, &jtag_speed);
1540                 hasKHz = 0;
1541         }
1542
1543         if (jtag_interface->init() != ERROR_OK)
1544                 return ERROR_JTAG_INIT_FAILED;
1545
1546
1547
1548         jtag = jtag_interface;
1549         return ERROR_OK;
1550 }
1551
1552 static int jtag_init_inner(struct command_context_s *cmd_ctx)
1553 {
1554         int validate_tries = 0;
1555         jtag_device_t *device;
1556         int retval;
1557
1558         LOG_DEBUG("Init JTAG chain");
1559
1560         device = jtag_devices;
1561         jtag_ir_scan_size = 0;
1562         jtag_num_devices = 0;
1563         while (device != NULL)
1564         {
1565                 jtag_ir_scan_size += device->ir_length;
1566                 jtag_num_devices++;
1567                 device = device->next;
1568         }
1569
1570         jtag_add_tlr();
1571         if ((retval=jtag_execute_queue())!=ERROR_OK)
1572                 return retval;
1573
1574         /* examine chain first, as this could discover the real chain layout */
1575         if (jtag_examine_chain() != ERROR_OK)
1576         {
1577                 LOG_ERROR("trying to validate configured JTAG chain anyway...");
1578         }
1579
1580         while (jtag_validate_chain() != ERROR_OK)
1581         {
1582                 validate_tries++;
1583
1584                 if (validate_tries > 5)
1585                 {
1586                         LOG_ERROR("Could not validate JTAG chain, exit");
1587                         return ERROR_JTAG_INVALID_INTERFACE;
1588                 }
1589                 usleep(10000);
1590         }
1591
1592         return ERROR_OK;
1593 }
1594
1595 int jtag_init_reset(struct command_context_s *cmd_ctx)
1596 {
1597         int retval;
1598
1599         if ((retval=jtag_interface_init(cmd_ctx)) != ERROR_OK)
1600                 return retval;
1601
1602         LOG_DEBUG("Trying to bring the JTAG controller to life by asserting TRST / TLR");
1603
1604         /* Reset can happen after a power cycle.
1605          *
1606          * Ideally we would only assert TRST or run TLR before the target reset.
1607          *
1608          * However w/srst_pulls_trst, trst is asserted together with the target
1609          * reset whether we want it or not.
1610          *
1611          * NB! Some targets have JTAG circuitry disabled until a
1612          * trst & srst has been asserted.
1613          *
1614          * NB! here we assume nsrst/ntrst delay are sufficient!
1615          *
1616          * NB! order matters!!!! srst *can* disconnect JTAG circuitry
1617          *
1618          */
1619         jtag_add_reset(1, 0); /* TLR or TRST */
1620         if (jtag_reset_config & RESET_HAS_SRST)
1621         {
1622                 jtag_add_reset(1, 1);
1623                 if ((jtag_reset_config & RESET_SRST_PULLS_TRST)==0)
1624                         jtag_add_reset(0, 1);
1625         }
1626         jtag_add_reset(0, 0);
1627         if ((retval = jtag_execute_queue()) != ERROR_OK)
1628                 return retval;
1629
1630         /* Check that we can communication on the JTAG chain + eventually we want to
1631          * be able to perform enumeration only after OpenOCD has started
1632          * telnet and GDB server
1633          *
1634          * That would allow users to more easily perform any magic they need to before
1635          * reset happens.
1636          */
1637         return jtag_init_inner(cmd_ctx);
1638 }
1639
1640 int jtag_init(struct command_context_s *cmd_ctx)
1641 {
1642         int retval;
1643         if ((retval=jtag_interface_init(cmd_ctx)) != ERROR_OK)
1644                 return retval;
1645         if (jtag_init_inner(cmd_ctx)==ERROR_OK)
1646         {
1647                 return ERROR_OK;
1648         }
1649         return jtag_init_reset(cmd_ctx);
1650 }
1651
1652 static int default_khz(int khz, int *jtag_speed)
1653 {
1654         LOG_ERROR("Translation from khz to jtag_speed not implemented");
1655         return ERROR_FAIL;
1656 }
1657
1658 static int default_speed_div(int speed, int *khz)
1659 {
1660         return ERROR_FAIL;
1661 }
1662
1663 int handle_interface_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1664 {
1665         int i;
1666
1667         /* check whether the interface is already configured */
1668         if (jtag_interface)
1669         {
1670                 LOG_WARNING("Interface already configured, ignoring");
1671                 return ERROR_OK;
1672         }
1673
1674         /* interface name is a mandatory argument */
1675         if (argc < 1 || args[0][0] == '\0')
1676         {
1677                 return ERROR_COMMAND_SYNTAX_ERROR;
1678         }
1679
1680         for (i=0; jtag_interfaces[i]; i++)
1681         {
1682                 if (strcmp(args[0], jtag_interfaces[i]->name) == 0)
1683                 {
1684                         if (jtag_interfaces[i]->register_commands(cmd_ctx) != ERROR_OK)
1685                                 exit(-1);
1686
1687                         jtag_interface = jtag_interfaces[i];
1688
1689                         if (jtag_interface->khz == NULL)
1690                         {
1691                                 jtag_interface->khz = default_khz;
1692                         }
1693                         if (jtag_interface->speed_div == NULL)
1694                         {
1695                                 jtag_interface->speed_div = default_speed_div;
1696                         }
1697                         return ERROR_OK;
1698                 }
1699         }
1700
1701         /* no valid interface was found (i.e. the configuration option,
1702          * didn't match one of the compiled-in interfaces
1703          */
1704         LOG_ERROR("No valid jtag interface found (%s)", args[0]);
1705         LOG_ERROR("compiled-in jtag interfaces:");
1706         for (i = 0; jtag_interfaces[i]; i++)
1707         {
1708                 LOG_ERROR("%i: %s", i, jtag_interfaces[i]->name);
1709         }
1710
1711         return ERROR_JTAG_INVALID_INTERFACE;
1712 }
1713
1714 int handle_jtag_device_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1715 {
1716         jtag_device_t **last_device_p = &jtag_devices;
1717
1718         if (*last_device_p)
1719         {
1720                 while ((*last_device_p)->next)
1721                         last_device_p = &((*last_device_p)->next);
1722                 last_device_p = &((*last_device_p)->next);
1723         }
1724
1725         if (argc < 3)
1726                 return ERROR_OK;
1727
1728         *last_device_p = malloc(sizeof(jtag_device_t));
1729         (*last_device_p)->ir_length = strtoul(args[0], NULL, 0);
1730
1731         (*last_device_p)->expected = malloc((*last_device_p)->ir_length);
1732         buf_set_u32((*last_device_p)->expected, 0, (*last_device_p)->ir_length, strtoul(args[1], NULL, 0));
1733         (*last_device_p)->expected_mask = malloc((*last_device_p)->ir_length);
1734         buf_set_u32((*last_device_p)->expected_mask, 0, (*last_device_p)->ir_length, strtoul(args[2], NULL, 0));
1735
1736         (*last_device_p)->cur_instr = malloc((*last_device_p)->ir_length);
1737         (*last_device_p)->bypass = 1;
1738         buf_set_ones((*last_device_p)->cur_instr, (*last_device_p)->ir_length);
1739
1740         (*last_device_p)->next = NULL;
1741
1742         jtag_register_event_callback(jtag_reset_callback, (*last_device_p));
1743
1744         jtag_num_devices++;
1745
1746         return ERROR_OK;
1747 }
1748
1749 int handle_scan_chain_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1750 {
1751         jtag_device_t *device = jtag_devices;
1752         int device_count = 0;
1753
1754         while (device)
1755         {
1756                 u32 expected, expected_mask, cur_instr;
1757                 expected = buf_get_u32(device->expected, 0, device->ir_length);
1758                 expected_mask = buf_get_u32(device->expected_mask, 0, device->ir_length);
1759                 cur_instr = buf_get_u32(device->cur_instr, 0, device->ir_length);
1760                 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);
1761                 device = device->next;
1762                 device_count++;
1763         }
1764
1765         return ERROR_OK;
1766 }
1767
1768 int handle_reset_config_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1769 {
1770         if (argc < 1)
1771                 return ERROR_COMMAND_SYNTAX_ERROR;
1772
1773         if (argc >= 1)
1774         {
1775                 if (strcmp(args[0], "none") == 0)
1776                         jtag_reset_config = RESET_NONE;
1777                 else if (strcmp(args[0], "trst_only") == 0)
1778                         jtag_reset_config = RESET_HAS_TRST;
1779                 else if (strcmp(args[0], "srst_only") == 0)
1780                         jtag_reset_config = RESET_HAS_SRST;
1781                 else if (strcmp(args[0], "trst_and_srst") == 0)
1782                         jtag_reset_config = RESET_TRST_AND_SRST;
1783                 else
1784                 {
1785                         LOG_ERROR("invalid reset_config argument, defaulting to none");
1786                         jtag_reset_config = RESET_NONE;
1787                         return ERROR_INVALID_ARGUMENTS;
1788                 }
1789         }
1790
1791         if (argc >= 2)
1792         {
1793                 if (strcmp(args[1], "separate") == 0)
1794                 {
1795                         /* seperate reset lines - default */
1796                 } else
1797                 {
1798                         if (strcmp(args[1], "srst_pulls_trst") == 0)
1799                                 jtag_reset_config |= RESET_SRST_PULLS_TRST;
1800                         else if (strcmp(args[1], "trst_pulls_srst") == 0)
1801                                 jtag_reset_config |= RESET_TRST_PULLS_SRST;
1802                         else if (strcmp(args[1], "combined") == 0)
1803                                 jtag_reset_config |= RESET_SRST_PULLS_TRST | RESET_TRST_PULLS_SRST;
1804                         else
1805                         {
1806                                 LOG_ERROR("invalid reset_config argument, defaulting to none");
1807                                 jtag_reset_config = RESET_NONE;
1808                                 return ERROR_INVALID_ARGUMENTS;
1809                         }
1810                 }
1811         }
1812
1813         if (argc >= 3)
1814         {
1815                 if (strcmp(args[2], "trst_open_drain") == 0)
1816                         jtag_reset_config |= RESET_TRST_OPEN_DRAIN;
1817                 else if (strcmp(args[2], "trst_push_pull") == 0)
1818                         jtag_reset_config &= ~RESET_TRST_OPEN_DRAIN;
1819                 else
1820                 {
1821                         LOG_ERROR("invalid reset_config argument, defaulting to none");
1822                         jtag_reset_config = RESET_NONE;
1823                         return ERROR_INVALID_ARGUMENTS;
1824                 }
1825         }
1826
1827         if (argc >= 4)
1828         {
1829                 if (strcmp(args[3], "srst_push_pull") == 0)
1830                         jtag_reset_config |= RESET_SRST_PUSH_PULL;
1831                 else if (strcmp(args[3], "srst_open_drain") == 0)
1832                         jtag_reset_config &= ~RESET_SRST_PUSH_PULL;
1833                 else
1834                 {
1835                         LOG_ERROR("invalid reset_config argument, defaulting to none");
1836                         jtag_reset_config = RESET_NONE;
1837                         return ERROR_INVALID_ARGUMENTS;
1838                 }
1839         }
1840
1841         return ERROR_OK;
1842 }
1843
1844 int handle_jtag_nsrst_delay_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1845 {
1846         if (argc < 1)
1847         {
1848                 LOG_ERROR("jtag_nsrst_delay <ms> command takes one required argument");
1849                 exit(-1);
1850         }
1851         else
1852         {
1853                 jtag_nsrst_delay = strtoul(args[0], NULL, 0);
1854         }
1855
1856         return ERROR_OK;
1857 }
1858
1859 int handle_jtag_ntrst_delay_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1860 {
1861         if (argc < 1)
1862         {
1863                 LOG_ERROR("jtag_ntrst_delay <ms> command takes one required argument");
1864                 exit(-1);
1865         }
1866         else
1867         {
1868                 jtag_ntrst_delay = strtoul(args[0], NULL, 0);
1869         }
1870
1871         return ERROR_OK;
1872 }
1873
1874 int handle_jtag_speed_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1875 {
1876         int retval=ERROR_OK;
1877
1878         if (argc == 1)
1879         {
1880                 LOG_DEBUG("handle jtag speed");
1881
1882                 int cur_speed = 0;
1883                 cur_speed = jtag_speed = strtoul(args[0], NULL, 0);
1884
1885                 /* this command can be called during CONFIG,
1886                  * in which case jtag isn't initialized */
1887                 if (jtag)
1888                 {
1889                         retval=jtag->speed(cur_speed);
1890                 }
1891         } else if (argc == 0)
1892         {
1893         } else
1894         {
1895                 retval=ERROR_COMMAND_SYNTAX_ERROR;
1896         }
1897         command_print(cmd_ctx, "jtag_speed: %d", jtag_speed);
1898
1899         return retval;
1900 }
1901
1902 int handle_jtag_khz_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1903 {
1904         int retval=ERROR_OK;
1905         LOG_DEBUG("handle jtag khz");
1906
1907         if(argc == 1)
1908         {
1909                 speed_khz = strtoul(args[0], NULL, 0);
1910                 if (jtag != NULL)
1911                 {
1912                         int cur_speed = 0;
1913                         LOG_DEBUG("have interface set up");
1914                         int speed_div1;
1915                         if ((retval=jtag->khz(speed_khz, &speed_div1))!=ERROR_OK)
1916                         {
1917                                 speed_khz = 0;
1918                                 return retval;
1919                         }
1920
1921                         cur_speed = jtag_speed = speed_div1;
1922
1923                         retval=jtag->speed(cur_speed);
1924                 } else
1925                 {
1926                         hasKHz = 1;
1927                 }
1928         } else if (argc==0)
1929         {
1930         } else
1931         {
1932                 retval=ERROR_COMMAND_SYNTAX_ERROR;
1933         }
1934         command_print(cmd_ctx, "jtag_khz: %d", speed_khz);
1935         return retval;
1936
1937 }
1938
1939 int handle_endstate_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1940 {
1941         enum tap_state state;
1942
1943         if (argc < 1)
1944         {
1945                 return ERROR_COMMAND_SYNTAX_ERROR;
1946         }
1947         else
1948         {
1949                 for (state = 0; state < 16; state++)
1950                 {
1951                         if (strcmp(args[0], tap_state_strings[state]) == 0)
1952                         {
1953                                 jtag_add_end_state(state);
1954                                 jtag_execute_queue();
1955                         }
1956                 }
1957         }
1958         command_print(cmd_ctx, "current endstate: %s", tap_state_strings[cmd_queue_end_state]);
1959
1960         return ERROR_OK;
1961 }
1962
1963 int handle_jtag_reset_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1964 {
1965         int trst = -1;
1966         int srst = -1;
1967
1968         if (argc < 2)
1969         {
1970                 return ERROR_COMMAND_SYNTAX_ERROR;
1971         }
1972
1973         if (args[0][0] == '1')
1974                 trst = 1;
1975         else if (args[0][0] == '0')
1976                 trst = 0;
1977         else
1978         {
1979                 return ERROR_COMMAND_SYNTAX_ERROR;
1980         }
1981
1982         if (args[1][0] == '1')
1983                 srst = 1;
1984         else if (args[1][0] == '0')
1985                 srst = 0;
1986         else
1987         {
1988                 return ERROR_COMMAND_SYNTAX_ERROR;
1989         }
1990
1991         if (jtag_interface_init(cmd_ctx) != ERROR_OK)
1992                 return ERROR_JTAG_INIT_FAILED;
1993
1994         jtag_add_reset(trst, srst);
1995         jtag_execute_queue();
1996
1997         return ERROR_OK;
1998 }
1999
2000 int handle_runtest_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2001 {
2002         if (argc < 1)
2003         {
2004                 return ERROR_COMMAND_SYNTAX_ERROR;
2005         }
2006
2007         jtag_add_runtest(strtol(args[0], NULL, 0), -1);
2008         jtag_execute_queue();
2009
2010         return ERROR_OK;
2011
2012 }
2013
2014 int handle_irscan_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2015 {
2016         int i;
2017         scan_field_t *fields;
2018
2019         if ((argc < 2) || (argc % 2))
2020         {
2021                 return ERROR_COMMAND_SYNTAX_ERROR;
2022         }
2023
2024         fields = malloc(sizeof(scan_field_t) * argc / 2);
2025
2026         for (i = 0; i < argc / 2; i++)
2027         {
2028                 int device = strtoul(args[i*2], NULL, 0);
2029                 int field_size = jtag_get_device(device)->ir_length;
2030                 fields[i].device = device;
2031                 fields[i].out_value = malloc(CEIL(field_size, 8));
2032                 buf_set_u32(fields[i].out_value, 0, field_size, strtoul(args[i*2+1], NULL, 0));
2033                 fields[i].out_mask = NULL;
2034                 fields[i].in_value = NULL;
2035                 fields[i].in_check_mask = NULL;
2036                 fields[i].in_handler = NULL;
2037                 fields[i].in_handler_priv = NULL;
2038         }
2039
2040         jtag_add_ir_scan(argc / 2, fields, -1);
2041         jtag_execute_queue();
2042
2043         for (i = 0; i < argc / 2; i++)
2044                 free(fields[i].out_value);
2045
2046         free (fields);
2047
2048         return ERROR_OK;
2049 }
2050
2051 int Jim_Command_drscan(Jim_Interp *interp, int argc, Jim_Obj *const *args)
2052 {
2053         int retval;
2054         scan_field_t *fields;
2055         int num_fields;
2056         int field_count = 0;
2057         int i, e;
2058         long device;
2059
2060         /* args[1] = device
2061          * args[2] = num_bits
2062          * args[3] = hex string
2063          * ... repeat num bits and hex string ...
2064          */
2065         if ((argc < 4) || ((argc % 2)!=0))
2066         {
2067                 Jim_WrongNumArgs(interp, 1, args, "wrong arguments");
2068                 return JIM_ERR;
2069         }
2070
2071         for (i = 2; i < argc; i+=2)
2072         {
2073                 long bits;
2074
2075                 e = Jim_GetLong(interp, args[i], &bits);
2076                 if (e != JIM_OK)
2077                         return e;
2078         }
2079
2080         e = Jim_GetLong(interp, args[1], &device);
2081         if (e != JIM_OK)
2082                 return e;
2083
2084         num_fields=(argc-2)/2;
2085         fields = malloc(sizeof(scan_field_t) * num_fields);
2086         for (i = 2; i < argc; i+=2)
2087         {
2088                 long bits;
2089                 int len;
2090                 const char *str;
2091
2092                 Jim_GetLong(interp, args[i], &bits);
2093                 str = Jim_GetString(args[i+1], &len);
2094
2095                 fields[field_count].device = device;
2096                 fields[field_count].num_bits = bits;
2097                 fields[field_count].out_value = malloc(CEIL(bits, 8));
2098                 str_to_buf(str, len, fields[field_count].out_value, bits, 0);
2099                 fields[field_count].out_mask = NULL;
2100                 fields[field_count].in_value = fields[field_count].out_value;
2101                 fields[field_count].in_check_mask = NULL;
2102                 fields[field_count].in_check_value = NULL;
2103                 fields[field_count].in_handler = NULL;
2104                 fields[field_count++].in_handler_priv = NULL;
2105         }
2106
2107         jtag_add_dr_scan(num_fields, fields, -1);
2108         retval = jtag_execute_queue();
2109         if (retval != ERROR_OK)
2110         {
2111                 Jim_SetResult(interp, Jim_NewEmptyStringObj(interp));
2112                 Jim_AppendStrings(interp, Jim_GetResult(interp), "drscan: jtag execute failed", NULL);
2113                 return JIM_ERR;
2114         }
2115
2116         field_count=0;
2117         Jim_Obj *list = Jim_NewListObj(interp, NULL, 0);
2118         for (i = 2; i < argc; i+=2)
2119         {
2120                 long bits;
2121                 char *str;
2122
2123                 Jim_GetLong(interp, args[i], &bits);
2124                 str = buf_to_str(fields[field_count].in_value, bits, 16);
2125                 free(fields[field_count].out_value);
2126
2127                 Jim_ListAppendElement(interp, list, Jim_NewStringObj(interp, str, strlen(str)));
2128                 free(str);
2129                 field_count++;
2130         }
2131
2132         Jim_SetResult(interp, list);
2133
2134         free(fields);
2135
2136         return JIM_OK;
2137 }
2138
2139 int handle_verify_ircapture_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2140 {
2141         if (argc == 1)
2142         {
2143                 if (strcmp(args[0], "enable") == 0)
2144                 {
2145                         jtag_verify_capture_ir = 1;
2146                 }
2147                 else if (strcmp(args[0], "disable") == 0)
2148                 {
2149                         jtag_verify_capture_ir = 0;
2150                 } else
2151                 {
2152                         return ERROR_COMMAND_SYNTAX_ERROR;
2153                 }
2154         } else if (argc != 0)
2155         {
2156                 return ERROR_COMMAND_SYNTAX_ERROR;
2157         }
2158
2159         command_print(cmd_ctx, "verify Capture-IR is %s", (jtag_verify_capture_ir) ? "enabled": "disabled");
2160
2161         return ERROR_OK;
2162 }