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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
  31 #include "stdlib.h"
  32 #include "string.h"
  33 #include <unistd.h>
  34
  35 /* note that this is not marked as static as it must be available from outside jtag.c for those
  36    that implement the jtag_xxx() minidriver layer
  37 */
  38 int jtag_error=ERROR_OK;
  39
  40
  41 char* tap_state_strings[16] =
  42 {
  43         "tlr",
  44         "sds", "cd", "sd", "e1d", "pd", "e2d", "ud",
  45         "rti",
  46         "sis", "ci", "si", "e1i", "pi", "e2i", "ui"
  47 };
  48
  49 typedef struct cmd_queue_page_s
  50 {
  51         void *address;
  52         size_t used;
  53         struct cmd_queue_page_s *next;
  54 } cmd_queue_page_t;
  55
  56 #define CMD_QUEUE_PAGE_SIZE (1024 * 1024)
  57 static cmd_queue_page_t *cmd_queue_pages = NULL;
  58
  59 /* tap_move[i][j]: tap movement command to go from state i to state j
  60  * 0: Test-Logic-Reset
  61  * 1: Run-Test/Idle
  62  * 2: Shift-DR
  63  * 3: Pause-DR
  64  * 4: Shift-IR
  65  * 5: Pause-IR
  66  *
  67  * SD->SD and SI->SI have to be caught in interface specific code
  68  */
  69 u8 tap_move[6][6] =
  70 {
  71 /*        TLR   RTI   SD    PD    SI    PI             */
  72         {0x7f, 0x00, 0x17, 0x0a, 0x1b, 0x16},   /* TLR */
  73         {0x7f, 0x00, 0x25, 0x05, 0x2b, 0x0b},   /* RTI */
  74         {0x7f, 0x31, 0x00, 0x01, 0x0f, 0x2f},   /* SD  */
  75         {0x7f, 0x30, 0x20, 0x17, 0x1e, 0x2f},   /* PD  */
  76         {0x7f, 0x31, 0x07, 0x17, 0x00, 0x01},   /* SI  */
  77         {0x7f, 0x30, 0x1c, 0x17, 0x20, 0x2f}    /* PI  */
  78 };
  79
  80 int tap_move_map[16] = {
  81         0, -1, -1,  2, -1,  3, -1, -1,
  82         1, -1, -1,  4, -1,  5, -1, -1
  83 };
  84
  85 tap_transition_t tap_transitions[16] =
  86 {
  87         {TAP_TLR, TAP_RTI},             /* TLR */
  88         {TAP_SIS, TAP_CD},              /* SDS */
  89         {TAP_E1D, TAP_SD},              /* CD  */
  90         {TAP_E1D, TAP_SD},              /* SD  */
  91         {TAP_UD,  TAP_PD},              /* E1D */
  92         {TAP_E2D, TAP_PD},              /* PD  */
  93         {TAP_UD,  TAP_SD},              /* E2D */
  94         {TAP_SDS, TAP_RTI},             /* UD  */
  95         {TAP_SDS, TAP_RTI},             /* RTI */
  96         {TAP_TLR, TAP_CI},              /* SIS */
  97         {TAP_E1I, TAP_SI},              /* CI  */
  98         {TAP_E1I, TAP_SI},              /* SI  */
  99         {TAP_UI,  TAP_PI},              /* E1I */
 100         {TAP_E2I, TAP_PI},              /* PI  */
 101         {TAP_UI,  TAP_SI},              /* E2I */
 102         {TAP_SDS, TAP_RTI}              /* UI  */
 103 };
 104
 105 char* jtag_event_strings[] =
 106 {
 107         "JTAG controller reset (TLR or TRST)"
 108 };
 109
 110 /* kludge!!!! these are just global variables that the
 111  * interface use internally. They really belong
 112  * inside the drivers, but we don't want to break
 113  * linking the drivers!!!!
 114  */
 115 enum tap_state end_state = TAP_TLR;
 116 enum tap_state cur_state = TAP_TLR;
 117 int jtag_trst = 0;
 118 int jtag_srst = 0;
 119
 120 jtag_command_t *jtag_command_queue = NULL;
 121 jtag_command_t **last_comand_pointer = &jtag_command_queue;
 122 jtag_device_t *jtag_devices = NULL;
 123 int jtag_num_devices = 0;
 124 int jtag_ir_scan_size = 0;
 125 enum reset_types jtag_reset_config = RESET_NONE;
 126 enum tap_state cmd_queue_end_state = TAP_TLR;
 127 enum tap_state cmd_queue_cur_state = TAP_TLR;
 128
 129 int jtag_verify_capture_ir = 1;
 130
 131 /* how long the OpenOCD should wait before attempting JTAG communication after reset lines deasserted (in ms) */
 132 int jtag_nsrst_delay = 0; /* default to no nSRST delay */
 133 int jtag_ntrst_delay = 0; /* default to no nTRST delay */
 134
 135 /* maximum number of JTAG devices expected in the chain
 136  */
 137 #define JTAG_MAX_CHAIN_SIZE 20
 138
 139 /* callbacks to inform high-level handlers about JTAG state changes */
 140 jtag_event_callback_t *jtag_event_callbacks;
 141
 142 /* speed in kHz*/
 143 static int speed1 = 0, speed2 = 0;
 144 /* flag if the kHz speed was defined */
 145 static int hasKHz = 0;
 146
 147 /* jtag interfaces (parport, FTDI-USB, TI-USB, ...)
 148  */
 149
 150 #if BUILD_ECOSBOARD == 1
 151         extern jtag_interface_t eCosBoard_interface;
 152 #endif
 153
 154 #if BUILD_PARPORT == 1
 155         extern jtag_interface_t parport_interface;
 156 #endif
 157
 158 #if BUILD_DUMMY == 1
 159         extern jtag_interface_t dummy_interface;
 160 #endif
 161
 162 #if BUILD_FT2232_FTD2XX == 1
 163         extern jtag_interface_t ft2232_interface;
 164 #endif
 165
 166 #if BUILD_FT2232_LIBFTDI == 1
 167         extern jtag_interface_t ft2232_interface;
 168 #endif
 169
 170 #if BUILD_AMTJTAGACCEL == 1
 171         extern jtag_interface_t amt_jtagaccel_interface;
 172 #endif
 173
 174 #if BUILD_EP93XX == 1
 175         extern jtag_interface_t ep93xx_interface;
 176 #endif
 177
 178 #if BUILD_AT91RM9200 == 1
 179         extern jtag_interface_t at91rm9200_interface;
 180 #endif
 181
 182 #if BUILD_GW16012 == 1
 183         extern jtag_interface_t gw16012_interface;
 184 #endif
 185
 186 #if BUILD_PRESTO_LIBFTDI == 1 || BUILD_PRESTO_FTD2XX == 1
 187         extern jtag_interface_t presto_interface;
 188 #endif
 189
 190 #if BUILD_USBPROG == 1
 191         extern jtag_interface_t usbprog_interface;
 192 #endif
 193
 194 #if BUILD_JLINK == 1
 195         extern jtag_interface_t jlink_interface;
 196 #endif
 197
 198 jtag_interface_t *jtag_interfaces[] = {
 199 #if BUILD_ECOSBOARD == 1
 200         &eCosBoard_interface,
 201 #endif
 202 #if BUILD_PARPORT == 1
 203         &parport_interface,
 204 #endif
 205 #if BUILD_DUMMY == 1
 206         &dummy_interface,
 207 #endif
 208 #if BUILD_FT2232_FTD2XX == 1
 209         &ft2232_interface,
 210 #endif
 211 #if BUILD_FT2232_LIBFTDI == 1
 212         &ft2232_interface,
 213 #endif
 214 #if BUILD_AMTJTAGACCEL == 1
 215         &amt_jtagaccel_interface,
 216 #endif
 217 #if BUILD_EP93XX == 1
 218         &ep93xx_interface,
 219 #endif
 220 #if BUILD_AT91RM9200 == 1
 221         &at91rm9200_interface,
 222 #endif
 223 #if BUILD_GW16012 == 1
 224         &gw16012_interface,
 225 #endif
 226 #if BUILD_PRESTO_LIBFTDI == 1 || BUILD_PRESTO_FTD2XX == 1
 227         &presto_interface,
 228 #endif
 229 #if BUILD_USBPROG == 1
 230         &usbprog_interface,
 231 #endif
 232 #if BUILD_JLINK == 1
 233         &jlink_interface,
 234 #endif
 235         NULL,
 236 };
 237
 238 jtag_interface_t *jtag = NULL;
 239
 240 /* configuration */
 241 jtag_interface_t *jtag_interface = NULL;
 242 int jtag_speed = 0;
 243 int jtag_speed_post_reset = 0;
 244
 245
 246 /* forward declarations */
 247 void jtag_add_pathmove(int num_states, enum tap_state *path);
 248 void jtag_add_runtest(int num_cycles, enum tap_state endstate);
 249 void jtag_add_end_state(enum tap_state endstate);
 250 void jtag_add_sleep(u32 us);
 251 int jtag_execute_queue(void);
 252 int jtag_cancel_queue(void);
 253
 254 /* jtag commands */
 255 int handle_interface_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 256 int handle_jtag_speed_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 257 int handle_jtag_khz_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 258 int handle_jtag_device_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 259 int handle_reset_config_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 260 int handle_jtag_nsrst_delay_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 261 int handle_jtag_ntrst_delay_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 262
 263 int handle_scan_chain_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 264
 265 int handle_endstate_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 266 int handle_jtag_reset_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 267 int handle_runtest_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 268 int handle_irscan_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 269 int Jim_Command_drscan(Jim_Interp *interp, int argc, Jim_Obj *const *argv);
 270
 271 int handle_verify_ircapture_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 272
 273 int jtag_register_event_callback(int (*callback)(enum jtag_event event, void *priv), void *priv)
 274 {
 275         jtag_event_callback_t **callbacks_p = &jtag_event_callbacks;
 276
 277         if (callback == NULL)
 278         {
 279                 return ERROR_INVALID_ARGUMENTS;
 280         }
 281
 282         if (*callbacks_p)
 283         {
 284                 while ((*callbacks_p)->next)
 285                         callbacks_p = &((*callbacks_p)->next);
 286                 callbacks_p = &((*callbacks_p)->next);
 287         }
 288
 289         (*callbacks_p) = malloc(sizeof(jtag_event_callback_t));
 290         (*callbacks_p)->callback = callback;
 291         (*callbacks_p)->priv = priv;
 292         (*callbacks_p)->next = NULL;
 293
 294         return ERROR_OK;
 295 }
 296
 297 int jtag_unregister_event_callback(int (*callback)(enum jtag_event event, void *priv))
 298 {
 299         jtag_event_callback_t **callbacks_p = &jtag_event_callbacks;
 300
 301         if (callback == NULL)
 302         {
 303                 return ERROR_INVALID_ARGUMENTS;
 304         }
 305
 306         while (*callbacks_p)
 307         {
 308                 jtag_event_callback_t **next = &((*callbacks_p)->next);
 309                 if ((*callbacks_p)->callback == callback)
 310                 {
 311                         free(*callbacks_p);
 312                         *callbacks_p = *next;
 313                 }
 314                 callbacks_p = next;
 315         }
 316
 317         return ERROR_OK;
 318 }
 319
 320 int jtag_call_event_callbacks(enum jtag_event event)
 321 {
 322         jtag_event_callback_t *callback = jtag_event_callbacks;
 323
 324         LOG_DEBUG("jtag event: %s", jtag_event_strings[event]);
 325
 326         while (callback)
 327         {
 328                 callback->callback(event, callback->priv);
 329                 callback = callback->next;
 330         }
 331
 332         return ERROR_OK;
 333 }
 334
 335 /* returns a pointer to the pointer of the last command in queue
 336  * this may be a pointer to the root pointer (jtag_command_queue)
 337  * or to the next member of the last but one command
 338  */
 339 jtag_command_t** jtag_get_last_command_p(void)
 340 {
 341 /*      jtag_command_t *cmd = jtag_command_queue;
 342
 343         if (cmd)
 344                 while (cmd->next)
 345                         cmd = cmd->next;
 346         else
 347                 return &jtag_command_queue;
 348
 349         return &cmd->next;*/
 350
 351         return last_comand_pointer;
 352 }
 353
 354 /* returns a pointer to the n-th device in the scan chain */
 355 jtag_device_t* jtag_get_device(int num)
 356 {
 357         jtag_device_t *device = jtag_devices;
 358         int i = 0;
 359
 360         while (device)
 361         {
 362                 if (num == i)
 363                         return device;
 364                 device = device->next;
 365                 i++;
 366         }
 367
 368         LOG_ERROR("jtag device number %d not defined", num);
 369         exit(-1);
 370 }
 371
 372 void* cmd_queue_alloc(size_t size)
 373 {
 374         cmd_queue_page_t **p_page = &cmd_queue_pages;
 375         int offset;
 376         u8 *t;
 377
 378         if (*p_page)
 379         {
 380                 while ((*p_page)->next)
 381                         p_page = &((*p_page)->next);
 382                 if (CMD_QUEUE_PAGE_SIZE - (*p_page)->used < size)
 383                         p_page = &((*p_page)->next);
 384         }
 385
 386         if (!*p_page)
 387         {
 388                 *p_page = malloc(sizeof(cmd_queue_page_t));
 389                 (*p_page)->used = 0;
 390                 (*p_page)->address = malloc(CMD_QUEUE_PAGE_SIZE);
 391                 (*p_page)->next = NULL;
 392         }
 393
 394         offset = (*p_page)->used;
 395         (*p_page)->used += size;
 396
 397         t=(u8 *)((*p_page)->address);
 398         return t + offset;
 399 }
 400
 401 void cmd_queue_free()
 402 {
 403         cmd_queue_page_t *page = cmd_queue_pages;
 404
 405         while (page)
 406         {
 407                 cmd_queue_page_t *last = page;
 408                 free(page->address);
 409                 page = page->next;
 410                 free(last);
 411         }
 412
 413         cmd_queue_pages = NULL;
 414 }
 415
 416 static void jtag_prelude1()
 417 {
 418         if (jtag_trst == 1)
 419         {
 420                 LOG_WARNING("JTAG command queued, while TRST is low (TAP in reset)");
 421                 jtag_error=ERROR_JTAG_TRST_ASSERTED;
 422                 return;
 423         }
 424
 425         if (cmd_queue_end_state == TAP_TLR)
 426                 jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
 427 }
 428
 429 static void jtag_prelude(enum tap_state state)
 430 {
 431         jtag_prelude1();
 432
 433         if (state != -1)
 434                 jtag_add_end_state(state);
 435
 436         cmd_queue_cur_state = cmd_queue_end_state;
 437 }
 438
 439 void jtag_add_ir_scan(int num_fields, scan_field_t *fields, enum tap_state state)
 440 {
 441         int retval;
 442
 443         jtag_prelude(state);
 444
 445         retval=interface_jtag_add_ir_scan(num_fields, fields, cmd_queue_end_state);
 446         if (retval!=ERROR_OK)
 447                 jtag_error=retval;
 448 }
 449
 450 int MINIDRIVER(interface_jtag_add_ir_scan)(int num_fields, scan_field_t *fields, enum tap_state state)
 451 {
 452         jtag_command_t **last_cmd;
 453         jtag_device_t *device;
 454         int i, j;
 455         int scan_size = 0;
 456
 457
 458         last_cmd = jtag_get_last_command_p();
 459
 460         /* allocate memory for a new list member */
 461         *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
 462         (*last_cmd)->next = NULL;
 463         last_comand_pointer = &((*last_cmd)->next);
 464         (*last_cmd)->type = JTAG_SCAN;
 465
 466         /* allocate memory for ir scan command */
 467         (*last_cmd)->cmd.scan = cmd_queue_alloc(sizeof(scan_command_t));
 468         (*last_cmd)->cmd.scan->ir_scan = 1;
 469         (*last_cmd)->cmd.scan->num_fields = jtag_num_devices;   /* one field per device */
 470         (*last_cmd)->cmd.scan->fields = cmd_queue_alloc(jtag_num_devices * sizeof(scan_field_t));
 471         (*last_cmd)->cmd.scan->end_state = state;
 472
 473         for (i = 0; i < jtag_num_devices; i++)
 474         {
 475                 int found = 0;
 476                 device = jtag_get_device(i);
 477                 scan_size = device->ir_length;
 478                 (*last_cmd)->cmd.scan->fields[i].device = i;
 479                 (*last_cmd)->cmd.scan->fields[i].num_bits = scan_size;
 480                 (*last_cmd)->cmd.scan->fields[i].in_value = NULL;
 481                 (*last_cmd)->cmd.scan->fields[i].in_handler = NULL;     /* disable verification by default */
 482
 483                 /* search the list */
 484                 for (j = 0; j < num_fields; j++)
 485                 {
 486                         if (i == fields[j].device)
 487                         {
 488                                 found = 1;
 489                                 (*last_cmd)->cmd.scan->fields[i].out_value = buf_cpy(fields[j].out_value, cmd_queue_alloc(CEIL(scan_size, 8)), scan_size);
 490                                 (*last_cmd)->cmd.scan->fields[i].out_mask = buf_cpy(fields[j].out_mask, cmd_queue_alloc(CEIL(scan_size, 8)), scan_size);
 491
 492                                 if (jtag_verify_capture_ir)
 493                                 {
 494                                         if (fields[j].in_handler==NULL)
 495                                         {
 496                                                 jtag_set_check_value((*last_cmd)->cmd.scan->fields+i, device->expected, device->expected_mask, NULL);
 497                                         } else
 498                                         {
 499                                                 (*last_cmd)->cmd.scan->fields[i].in_handler = fields[j].in_handler;
 500                                                 (*last_cmd)->cmd.scan->fields[i].in_handler_priv = fields[j].in_handler_priv;
 501                                                 (*last_cmd)->cmd.scan->fields[i].in_check_value = device->expected;
 502                                                 (*last_cmd)->cmd.scan->fields[i].in_check_mask = device->expected_mask;
 503                                         }
 504                                 }
 505
 506                                 device->bypass = 0;
 507                                 break;
 508                         }
 509                 }
 510
 511                 if (!found)
 512                 {
 513                         /* if a device isn't listed, set it to BYPASS */
 514                         (*last_cmd)->cmd.scan->fields[i].out_value = buf_set_ones(cmd_queue_alloc(CEIL(scan_size, 8)), scan_size);
 515                         (*last_cmd)->cmd.scan->fields[i].out_mask = NULL;
 516                         device->bypass = 1;
 517
 518                 }
 519
 520                 /* update device information */
 521                 buf_cpy((*last_cmd)->cmd.scan->fields[i].out_value, jtag_get_device(i)->cur_instr, scan_size);
 522         }
 523
 524         return ERROR_OK;
 525 }
 526
 527 void jtag_add_plain_ir_scan(int num_fields, scan_field_t *fields, enum tap_state state)
 528 {
 529         int retval;
 530
 531         jtag_prelude(state);
 532
 533         retval=interface_jtag_add_plain_ir_scan(num_fields, fields, cmd_queue_end_state);
 534         if (retval!=ERROR_OK)
 535                 jtag_error=retval;
 536 }
 537
 538 int MINIDRIVER(interface_jtag_add_plain_ir_scan)(int num_fields, scan_field_t *fields, enum tap_state state)
 539 {
 540         int i;
 541         jtag_command_t **last_cmd;
 542
 543         last_cmd = jtag_get_last_command_p();
 544
 545         /* allocate memory for a new list member */
 546         *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
 547         (*last_cmd)->next = NULL;
 548         last_comand_pointer = &((*last_cmd)->next);
 549         (*last_cmd)->type = JTAG_SCAN;
 550
 551         /* allocate memory for ir scan command */
 552         (*last_cmd)->cmd.scan = cmd_queue_alloc(sizeof(scan_command_t));
 553         (*last_cmd)->cmd.scan->ir_scan = 1;
 554         (*last_cmd)->cmd.scan->num_fields = num_fields;
 555         (*last_cmd)->cmd.scan->fields = cmd_queue_alloc(num_fields * sizeof(scan_field_t));
 556         (*last_cmd)->cmd.scan->end_state = state;
 557
 558         for (i = 0; i < num_fields; i++)
 559         {
 560                 int num_bits = fields[i].num_bits;
 561                 int num_bytes = CEIL(fields[i].num_bits, 8);
 562                 (*last_cmd)->cmd.scan->fields[i].device = fields[i].device;
 563                 (*last_cmd)->cmd.scan->fields[i].num_bits = num_bits;
 564                 (*last_cmd)->cmd.scan->fields[i].out_value = buf_cpy(fields[i].out_value, cmd_queue_alloc(num_bytes), num_bits);
 565                 (*last_cmd)->cmd.scan->fields[i].out_mask = buf_cpy(fields[i].out_mask, cmd_queue_alloc(num_bytes), num_bits);
 566                 (*last_cmd)->cmd.scan->fields[i].in_value = fields[i].in_value;
 567                 (*last_cmd)->cmd.scan->fields[i].in_check_value = fields[i].in_check_value;
 568                 (*last_cmd)->cmd.scan->fields[i].in_check_mask = fields[i].in_check_mask;
 569                 (*last_cmd)->cmd.scan->fields[i].in_handler = NULL;
 570                 (*last_cmd)->cmd.scan->fields[i].in_handler_priv = NULL;
 571         }
 572         return ERROR_OK;
 573 }
 574
 575 void jtag_add_dr_scan(int num_fields, scan_field_t *fields, enum tap_state state)
 576 {
 577         int retval;
 578
 579         jtag_prelude(state);
 580
 581         retval=interface_jtag_add_dr_scan(num_fields, fields, cmd_queue_end_state);
 582         if (retval!=ERROR_OK)
 583                 jtag_error=retval;
 584 }
 585
 586 int MINIDRIVER(interface_jtag_add_dr_scan)(int num_fields, scan_field_t *fields, enum tap_state state)
 587 {
 588         int i, j;
 589         int bypass_devices = 0;
 590         int field_count = 0;
 591         int scan_size;
 592
 593         jtag_command_t **last_cmd = jtag_get_last_command_p();
 594         jtag_device_t *device = jtag_devices;
 595
 596         /* count devices in bypass */
 597         while (device)
 598         {
 599                 if (device->bypass)
 600                         bypass_devices++;
 601                 device = device->next;
 602         }
 603         if (bypass_devices >= jtag_num_devices)
 604         {
 605                 LOG_ERROR("all devices in bypass");
 606                 return ERROR_JTAG_DEVICE_ERROR;
 607         }
 608
 609         /* allocate memory for a new list member */
 610         *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
 611         last_comand_pointer = &((*last_cmd)->next);
 612         (*last_cmd)->next = NULL;
 613         (*last_cmd)->type = JTAG_SCAN;
 614
 615         /* allocate memory for dr scan command */
 616         (*last_cmd)->cmd.scan = cmd_queue_alloc(sizeof(scan_command_t));
 617         (*last_cmd)->cmd.scan->ir_scan = 0;
 618         (*last_cmd)->cmd.scan->num_fields = num_fields + bypass_devices;
 619         (*last_cmd)->cmd.scan->fields = cmd_queue_alloc((num_fields + bypass_devices) * sizeof(scan_field_t));
 620         (*last_cmd)->cmd.scan->end_state = state;
 621
 622         for (i = 0; i < jtag_num_devices; i++)
 623         {
 624                 int found = 0;
 625                 (*last_cmd)->cmd.scan->fields[field_count].device = i;
 626
 627                 for (j = 0; j < num_fields; j++)
 628                 {
 629                         if (i == fields[j].device)
 630                         {
 631                                 found = 1;
 632                                 scan_size = fields[j].num_bits;
 633                                 (*last_cmd)->cmd.scan->fields[field_count].num_bits = scan_size;
 634                                 (*last_cmd)->cmd.scan->fields[field_count].out_value = buf_cpy(fields[j].out_value, cmd_queue_alloc(CEIL(scan_size, 8)), scan_size);
 635                                 (*last_cmd)->cmd.scan->fields[field_count].out_mask = buf_cpy(fields[j].out_mask, cmd_queue_alloc(CEIL(scan_size, 8)), scan_size);
 636                                 (*last_cmd)->cmd.scan->fields[field_count].in_value = fields[j].in_value;
 637                                 (*last_cmd)->cmd.scan->fields[field_count].in_check_value = fields[j].in_check_value;
 638                                 (*last_cmd)->cmd.scan->fields[field_count].in_check_mask = fields[j].in_check_mask;
 639                                 (*last_cmd)->cmd.scan->fields[field_count].in_handler = fields[j].in_handler;
 640                                 (*last_cmd)->cmd.scan->fields[field_count++].in_handler_priv = fields[j].in_handler_priv;
 641                         }
 642                 }
 643                 if (!found)
 644                 {
 645 #ifdef _DEBUG_JTAG_IO_
 646                         /* if a device isn't listed, the BYPASS register should be selected */
 647                         if (!jtag_get_device(i)->bypass)
 648                         {
 649                                 LOG_ERROR("BUG: no scan data for a device not in BYPASS");
 650                                 exit(-1);
 651                         }
 652 #endif
 653                         /* program the scan field to 1 bit length, and ignore it's value */
 654                         (*last_cmd)->cmd.scan->fields[field_count].num_bits = 1;
 655                         (*last_cmd)->cmd.scan->fields[field_count].out_value = NULL;
 656                         (*last_cmd)->cmd.scan->fields[field_count].out_mask = NULL;
 657                         (*last_cmd)->cmd.scan->fields[field_count].in_value = NULL;
 658                         (*last_cmd)->cmd.scan->fields[field_count].in_check_value = NULL;
 659                         (*last_cmd)->cmd.scan->fields[field_count].in_check_mask = NULL;
 660                         (*last_cmd)->cmd.scan->fields[field_count].in_handler = NULL;
 661                         (*last_cmd)->cmd.scan->fields[field_count++].in_handler_priv = NULL;
 662                 }
 663                 else
 664                 {
 665 #ifdef _DEBUG_JTAG_IO_
 666                         /* if a device is listed, the BYPASS register must not be selected */
 667                         if (jtag_get_device(i)->bypass)
 668                         {
 669                                 LOG_ERROR("BUG: scan data for a device in BYPASS");
 670                                 exit(-1);
 671                         }
 672 #endif
 673                 }
 674         }
 675         return ERROR_OK;
 676 }
 677
 678 void MINIDRIVER(interface_jtag_add_dr_out)(int device_num,
 679                 int num_fields,
 680                 const int *num_bits,
 681                 const u32 *value,
 682                 enum tap_state end_state)
 683 {
 684         int i;
 685         int field_count = 0;
 686         int scan_size;
 687         int bypass_devices = 0;
 688
 689         jtag_command_t **last_cmd = jtag_get_last_command_p();
 690         jtag_device_t *device = jtag_devices;
 691         /* count devices in bypass */
 692         while (device)
 693         {
 694                 if (device->bypass)
 695                         bypass_devices++;
 696                 device = device->next;
 697         }
 698
 699         /* allocate memory for a new list member */
 700         *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
 701         last_comand_pointer = &((*last_cmd)->next);
 702         (*last_cmd)->next = NULL;
 703         (*last_cmd)->type = JTAG_SCAN;
 704
 705         /* allocate memory for dr scan command */
 706         (*last_cmd)->cmd.scan = cmd_queue_alloc(sizeof(scan_command_t));
 707         (*last_cmd)->cmd.scan->ir_scan = 0;
 708         (*last_cmd)->cmd.scan->num_fields = num_fields + bypass_devices;
 709         (*last_cmd)->cmd.scan->fields = cmd_queue_alloc((num_fields + bypass_devices) * sizeof(scan_field_t));
 710         (*last_cmd)->cmd.scan->end_state = end_state;
 711
 712         for (i = 0; i < jtag_num_devices; i++)
 713         {
 714                 (*last_cmd)->cmd.scan->fields[field_count].device = i;
 715
 716                 if (i == device_num)
 717                 {
 718                         int j;
 719 #ifdef _DEBUG_JTAG_IO_
 720                         /* if a device is listed, the BYPASS register must not be selected */
 721                         if (jtag_get_device(i)->bypass)
 722                         {
 723                                 LOG_ERROR("BUG: scan data for a device in BYPASS");
 724                                 exit(-1);
 725                         }
 726 #endif
 727                         for (j = 0; j < num_fields; j++)
 728                         {
 729                                 u8 out_value[4];
 730                                 scan_size = num_bits[j];
 731                                 buf_set_u32(out_value, 0, scan_size, value[j]);
 732                                 (*last_cmd)->cmd.scan->fields[field_count].num_bits = scan_size;
 733                                 (*last_cmd)->cmd.scan->fields[field_count].out_value = buf_cpy(out_value, cmd_queue_alloc(CEIL(scan_size, 8)), scan_size);
 734                                 (*last_cmd)->cmd.scan->fields[field_count].out_mask = NULL;
 735                                 (*last_cmd)->cmd.scan->fields[field_count].in_value = NULL;
 736                                 (*last_cmd)->cmd.scan->fields[field_count].in_check_value = NULL;
 737                                 (*last_cmd)->cmd.scan->fields[field_count].in_check_mask = NULL;
 738                                 (*last_cmd)->cmd.scan->fields[field_count].in_handler = NULL;
 739                                 (*last_cmd)->cmd.scan->fields[field_count++].in_handler_priv = NULL;
 740                         }
 741                 } else
 742                 {
 743 #ifdef _DEBUG_JTAG_IO_
 744                         /* if a device isn't listed, the BYPASS register should be selected */
 745                         if (!jtag_get_device(i)->bypass)
 746                         {
 747                                 LOG_ERROR("BUG: no scan data for a device not in BYPASS");
 748                                 exit(-1);
 749                         }
 750 #endif
 751                         /* program the scan field to 1 bit length, and ignore it's value */
 752                         (*last_cmd)->cmd.scan->fields[field_count].num_bits = 1;
 753                         (*last_cmd)->cmd.scan->fields[field_count].out_value = NULL;
 754                         (*last_cmd)->cmd.scan->fields[field_count].out_mask = NULL;
 755                         (*last_cmd)->cmd.scan->fields[field_count].in_value = NULL;
 756                         (*last_cmd)->cmd.scan->fields[field_count].in_check_value = NULL;
 757                         (*last_cmd)->cmd.scan->fields[field_count].in_check_mask = NULL;
 758                         (*last_cmd)->cmd.scan->fields[field_count].in_handler = NULL;
 759                         (*last_cmd)->cmd.scan->fields[field_count++].in_handler_priv = NULL;
 760                 }
 761         }
 762 }
 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         cmd_queue_cur_state = path[num_states - 1];
 869
 870         retval=interface_jtag_add_pathmove(num_states, path);
 871         if (retval!=ERROR_OK)
 872                 jtag_error=retval;
 873 }
 874
 875
 876 int MINIDRIVER(interface_jtag_add_pathmove)(int num_states, enum tap_state *path)
 877 {
 878         jtag_command_t **last_cmd = jtag_get_last_command_p();
 879         int i;
 880
 881         /* allocate memory for a new list member */
 882         *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
 883         last_comand_pointer = &((*last_cmd)->next);
 884         (*last_cmd)->next = NULL;
 885         (*last_cmd)->type = JTAG_PATHMOVE;
 886
 887         (*last_cmd)->cmd.pathmove = cmd_queue_alloc(sizeof(pathmove_command_t));
 888         (*last_cmd)->cmd.pathmove->num_states = num_states;
 889         (*last_cmd)->cmd.pathmove->path = cmd_queue_alloc(sizeof(enum tap_state) * num_states);
 890
 891         for (i = 0; i < num_states; i++)
 892                 (*last_cmd)->cmd.pathmove->path[i] = path[i];
 893
 894         return ERROR_OK;
 895 }
 896
 897 int MINIDRIVER(interface_jtag_add_runtest)(int num_cycles, enum tap_state state)
 898 {
 899         jtag_command_t **last_cmd = jtag_get_last_command_p();
 900
 901         /* allocate memory for a new list member */
 902         *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
 903         (*last_cmd)->next = NULL;
 904         last_comand_pointer = &((*last_cmd)->next);
 905         (*last_cmd)->type = JTAG_RUNTEST;
 906
 907         (*last_cmd)->cmd.runtest = cmd_queue_alloc(sizeof(runtest_command_t));
 908         (*last_cmd)->cmd.runtest->num_cycles = num_cycles;
 909         (*last_cmd)->cmd.runtest->end_state = state;
 910
 911         return ERROR_OK;
 912 }
 913
 914 void jtag_add_runtest(int num_cycles, enum tap_state state)
 915 {
 916         int retval;
 917
 918         jtag_prelude(state);
 919
 920         /* executed by sw or hw fifo */
 921         retval=interface_jtag_add_runtest(num_cycles, cmd_queue_end_state);
 922         if (retval!=ERROR_OK)
 923                 jtag_error=retval;
 924 }
 925
 926 void jtag_add_reset(int req_tlr_or_trst, int req_srst)
 927 {
 928         int trst_with_tlr = 0;
 929         int retval;
 930
 931         /* FIX!!! there are *many* different cases here. A better
 932          * approach is needed for legal combinations of transitions...
 933          */
 934         if ((jtag_reset_config & RESET_HAS_SRST)&&
 935                         (jtag_reset_config & RESET_HAS_TRST)&&
 936                         ((jtag_reset_config & RESET_SRST_PULLS_TRST)==0))
 937         {
 938                 if (((req_tlr_or_trst&&!jtag_trst)||
 939                                 (!req_tlr_or_trst&&jtag_trst))&&
 940                                 ((req_srst&&!jtag_srst)||
 941                                                 (!req_srst&&jtag_srst)))
 942                 {
 943                         /* FIX!!! srst_pulls_trst allows 1,1 => 0,0 transition.... */
 944                         //LOG_ERROR("BUG: transition of req_tlr_or_trst and req_srst in the same jtag_add_reset() call is undefined");
 945                 }
 946         }
 947
 948         /* Make sure that jtag_reset_config allows the requested reset */
 949         /* if SRST pulls TRST, we can't fulfill srst == 1 with trst == 0 */
 950         if (((jtag_reset_config & RESET_SRST_PULLS_TRST) && (req_srst == 1)) && (!req_tlr_or_trst))
 951         {
 952                 LOG_ERROR("BUG: requested reset would assert trst");
 953                 jtag_error=ERROR_FAIL;
 954                 return;
 955         }
 956
 957         /* if TRST pulls SRST, we reset with TAP T-L-R */
 958         if (((jtag_reset_config & RESET_TRST_PULLS_SRST) && (req_tlr_or_trst)) && (req_srst == 0))
 959         {
 960                 trst_with_tlr = 1;
 961         }
 962
 963         if (req_srst && !(jtag_reset_config & RESET_HAS_SRST))
 964         {
 965                 LOG_ERROR("BUG: requested SRST assertion, but the current configuration doesn't support this");
 966                 jtag_error=ERROR_FAIL;
 967                 return;
 968         }
 969
 970         if (req_tlr_or_trst)
 971         {
 972                 if (!trst_with_tlr && (jtag_reset_config & RESET_HAS_TRST))
 973                 {
 974                         jtag_trst = 1;
 975                 } else
 976                 {
 977                         trst_with_tlr = 1;
 978                 }
 979         } else
 980         {
 981                 jtag_trst = 0;
 982         }
 983
 984         jtag_srst = req_srst;
 985
 986         retval = interface_jtag_add_reset(jtag_trst, jtag_srst);
 987         if (retval!=ERROR_OK)
 988         {
 989                 jtag_error=retval;
 990                 return;
 991         }
 992
 993         if (jtag_srst)
 994         {
 995                 LOG_DEBUG("SRST line asserted");
 996         }
 997         else
 998         {
 999                 LOG_DEBUG("SRST line released");
1000                 if (jtag_nsrst_delay)
1001                         jtag_add_sleep(jtag_nsrst_delay * 1000);
1002         }
1003
1004         if (trst_with_tlr)
1005         {
1006                 LOG_DEBUG("JTAG reset with TLR instead of TRST");
1007                 jtag_add_end_state(TAP_TLR);
1008                 jtag_add_tlr();
1009                 jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
1010                 return;
1011         }
1012
1013         if (jtag_trst)
1014         {
1015                 /* we just asserted nTRST, so we're now in Test-Logic-Reset,
1016                  * and inform possible listeners about this
1017                  */
1018                 LOG_DEBUG("TRST line asserted");
1019                 cmd_queue_cur_state = TAP_TLR;
1020                 jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
1021         }
1022         else
1023         {
1024                 if (jtag_ntrst_delay)
1025                         jtag_add_sleep(jtag_ntrst_delay * 1000);
1026         }
1027 }
1028
1029 int MINIDRIVER(interface_jtag_add_reset)(int req_trst, int req_srst)
1030 {
1031         jtag_command_t **last_cmd = jtag_get_last_command_p();
1032
1033         /* allocate memory for a new list member */
1034         *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
1035         (*last_cmd)->next = NULL;
1036         last_comand_pointer = &((*last_cmd)->next);
1037         (*last_cmd)->type = JTAG_RESET;
1038
1039         (*last_cmd)->cmd.reset = cmd_queue_alloc(sizeof(reset_command_t));
1040         (*last_cmd)->cmd.reset->trst = req_trst;
1041         (*last_cmd)->cmd.reset->srst = req_srst;
1042
1043
1044         return ERROR_OK;
1045 }
1046
1047 void jtag_add_end_state(enum tap_state state)
1048 {
1049         cmd_queue_end_state = state;
1050         if ((cmd_queue_end_state == TAP_SD)||(cmd_queue_end_state == TAP_SD))
1051         {
1052                 LOG_ERROR("BUG: TAP_SD/SI can't be end state. Calling code should use a larger scan field");
1053         }
1054 }
1055
1056 int MINIDRIVER(interface_jtag_add_sleep)(u32 us)
1057 {
1058         jtag_command_t **last_cmd = jtag_get_last_command_p();
1059
1060         /* allocate memory for a new list member */
1061         *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
1062         (*last_cmd)->next = NULL;
1063         last_comand_pointer = &((*last_cmd)->next);
1064         (*last_cmd)->type = JTAG_SLEEP;
1065
1066         (*last_cmd)->cmd.sleep = cmd_queue_alloc(sizeof(sleep_command_t));
1067         (*last_cmd)->cmd.sleep->us = us;
1068
1069         return ERROR_OK;
1070 }
1071
1072 void jtag_add_sleep(u32 us)
1073 {
1074         int retval=interface_jtag_add_sleep(us);
1075         if (retval!=ERROR_OK)
1076                 jtag_error=retval;
1077         return;
1078 }
1079
1080 int jtag_scan_size(scan_command_t *cmd)
1081 {
1082         int bit_count = 0;
1083         int i;
1084
1085         /* count bits in scan command */
1086         for (i = 0; i < cmd->num_fields; i++)
1087         {
1088                 bit_count += cmd->fields[i].num_bits;
1089         }
1090
1091         return bit_count;
1092 }
1093
1094 int jtag_build_buffer(scan_command_t *cmd, u8 **buffer)
1095 {
1096         int bit_count = 0;
1097         int i;
1098
1099         bit_count = jtag_scan_size(cmd);
1100         *buffer = malloc(CEIL(bit_count, 8));
1101
1102         bit_count = 0;
1103
1104         for (i = 0; i < cmd->num_fields; i++)
1105         {
1106                 if (cmd->fields[i].out_value)
1107                 {
1108 #ifdef _DEBUG_JTAG_IO_
1109                         char* char_buf = buf_to_str(cmd->fields[i].out_value, (cmd->fields[i].num_bits > 64) ? 64 : cmd->fields[i].num_bits, 16);
1110 #endif
1111                         buf_set_buf(cmd->fields[i].out_value, 0, *buffer, bit_count, cmd->fields[i].num_bits);
1112 #ifdef _DEBUG_JTAG_IO_
1113                         LOG_DEBUG("fields[%i].out_value: 0x%s", i, char_buf);
1114                         free(char_buf);
1115 #endif
1116                 }
1117
1118                 bit_count += cmd->fields[i].num_bits;
1119         }
1120
1121         return bit_count;
1122
1123 }
1124
1125 int jtag_read_buffer(u8 *buffer, scan_command_t *cmd)
1126 {
1127         int i;
1128         int bit_count = 0;
1129         int retval;
1130
1131         /* we return ERROR_OK, unless a check fails, or a handler reports a problem */
1132         retval = ERROR_OK;
1133
1134         for (i = 0; i < cmd->num_fields; i++)
1135         {
1136                 /* if neither in_value nor in_handler
1137                  * are specified we don't have to examine this field
1138                  */
1139                 if (cmd->fields[i].in_value || cmd->fields[i].in_handler)
1140                 {
1141                         int num_bits = cmd->fields[i].num_bits;
1142                         u8 *captured = buf_set_buf(buffer, bit_count, malloc(CEIL(num_bits, 8)), 0, num_bits);
1143
1144 #ifdef _DEBUG_JTAG_IO_
1145                         char *char_buf;
1146
1147                         char_buf = buf_to_str(captured, (num_bits > 64) ? 64 : num_bits, 16);
1148                         LOG_DEBUG("fields[%i].in_value: 0x%s", i, char_buf);
1149                         free(char_buf);
1150 #endif
1151
1152                         if (cmd->fields[i].in_value)
1153                         {
1154                                 buf_cpy(captured, cmd->fields[i].in_value, num_bits);
1155
1156                                 if (cmd->fields[i].in_handler)
1157                                 {
1158                                         if (cmd->fields[i].in_handler(cmd->fields[i].in_value, cmd->fields[i].in_handler_priv, cmd->fields+i) != ERROR_OK)
1159                                         {
1160                                                 LOG_WARNING("in_handler reported a failed check");
1161                                                 retval = ERROR_JTAG_QUEUE_FAILED;
1162                                         }
1163                                 }
1164                         }
1165
1166                         /* no in_value specified, but a handler takes care of the scanned data */
1167                         if (cmd->fields[i].in_handler && (!cmd->fields[i].in_value))
1168                         {
1169                                 if (cmd->fields[i].in_handler(captured, cmd->fields[i].in_handler_priv, cmd->fields+i) != ERROR_OK)
1170                                 {
1171                                         /* We're going to call the error:handler later, but if the in_handler
1172                                          * reported an error we report this failure upstream
1173                                          */
1174                                         LOG_WARNING("in_handler reported a failed check");
1175                                         retval = ERROR_JTAG_QUEUE_FAILED;
1176                                 }
1177                         }
1178
1179                         free(captured);
1180                 }
1181                 bit_count += cmd->fields[i].num_bits;
1182         }
1183
1184         return retval;
1185 }
1186
1187 int jtag_check_value(u8 *captured, void *priv, scan_field_t *field)
1188 {
1189         int retval = ERROR_OK;
1190         int num_bits = field->num_bits;
1191
1192         int compare_failed = 0;
1193
1194         if (field->in_check_mask)
1195                 compare_failed = buf_cmp_mask(captured, field->in_check_value, field->in_check_mask, num_bits);
1196         else
1197                 compare_failed = buf_cmp(captured, field->in_check_value, num_bits);
1198
1199         if (compare_failed)
1200                 {
1201                 /* An error handler could have caught the failing check
1202                  * only report a problem when there wasn't a handler, or if the handler
1203                  * acknowledged the error
1204                  */
1205                 if (compare_failed)
1206                 {
1207                         char *captured_char = buf_to_str(captured, (num_bits > 64) ? 64 : num_bits, 16);
1208                         char *in_check_value_char = buf_to_str(field->in_check_value, (num_bits > 64) ? 64 : num_bits, 16);
1209
1210                         if (field->in_check_mask)
1211                         {
1212                                 char *in_check_mask_char;
1213                                 in_check_mask_char = buf_to_str(field->in_check_mask, (num_bits > 64) ? 64 : num_bits, 16);
1214                                 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);
1215                                 free(in_check_mask_char);
1216                         }
1217                         else
1218                         {
1219                                 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);
1220                         }
1221
1222                         free(captured_char);
1223                         free(in_check_value_char);
1224
1225                         retval = ERROR_JTAG_QUEUE_FAILED;
1226                 }
1227
1228         }
1229         return retval;
1230 }
1231
1232 /*
1233   set up checking of this field using the in_handler. The values passed in must be valid until
1234   after jtag_execute() has completed.
1235  */
1236 void jtag_set_check_value(scan_field_t *field, u8 *value, u8 *mask, error_handler_t *in_error_handler)
1237 {
1238         if (value)
1239                 field->in_handler = jtag_check_value;
1240         else
1241                 field->in_handler = NULL;       /* No check, e.g. embeddedice uses value==NULL to indicate no check */
1242         field->in_handler_priv = NULL;
1243         field->in_check_value = value;
1244         field->in_check_mask = mask;
1245 }
1246
1247 enum scan_type jtag_scan_type(scan_command_t *cmd)
1248 {
1249         int i;
1250         int type = 0;
1251
1252         for (i = 0; i < cmd->num_fields; i++)
1253         {
1254                 if (cmd->fields[i].in_value || cmd->fields[i].in_handler)
1255                         type |= SCAN_IN;
1256                 if (cmd->fields[i].out_value)
1257                         type |= SCAN_OUT;
1258         }
1259
1260         return type;
1261 }
1262
1263 int MINIDRIVER(interface_jtag_execute_queue)(void)
1264 {
1265         int retval;
1266
1267         if (jtag==NULL)
1268         {
1269                 LOG_ERROR("No JTAG interface configured yet. Issue 'init' command in startup scripts before communicating with targets.");
1270                 return ERROR_FAIL;
1271         }
1272
1273         retval = jtag->execute_queue();
1274
1275         cmd_queue_free();
1276
1277         jtag_command_queue = NULL;
1278         last_comand_pointer = &jtag_command_queue;
1279
1280         return retval;
1281 }
1282
1283 int jtag_execute_queue(void)
1284 {
1285         int retval=interface_jtag_execute_queue();
1286         if (retval==ERROR_OK)
1287         {
1288                 retval=jtag_error;
1289         }
1290         jtag_error=ERROR_OK;
1291         return retval;
1292 }
1293
1294 int jtag_reset_callback(enum jtag_event event, void *priv)
1295 {
1296         jtag_device_t *device = priv;
1297
1298         LOG_DEBUG("-");
1299
1300         if (event == JTAG_TRST_ASSERTED)
1301         {
1302                 buf_set_ones(device->cur_instr, device->ir_length);
1303                 device->bypass = 1;
1304         }
1305
1306         return ERROR_OK;
1307 }
1308
1309 void jtag_sleep(u32 us)
1310 {
1311         usleep(us);
1312 }
1313
1314 /* Try to examine chain layout according to IEEE 1149.1 §12
1315  */
1316 int jtag_examine_chain()
1317 {
1318         jtag_device_t *device = jtag_devices;
1319         scan_field_t field;
1320         u8 idcode_buffer[JTAG_MAX_CHAIN_SIZE * 4];
1321         int i;
1322         int bit_count;
1323         int device_count = 0;
1324         u8 zero_check = 0x0;
1325         u8 one_check = 0xff;
1326
1327         field.device = 0;
1328         field.num_bits = sizeof(idcode_buffer) * 8;
1329         field.out_value = idcode_buffer;
1330         field.out_mask = NULL;
1331         field.in_value = idcode_buffer;
1332         field.in_check_value = NULL;
1333         field.in_check_mask = NULL;
1334         field.in_handler = NULL;
1335         field.in_handler_priv = NULL;
1336
1337         for (i = 0; i < JTAG_MAX_CHAIN_SIZE; i++)
1338         {
1339                 buf_set_u32(idcode_buffer, i * 32, 32, 0x000000FF);
1340         }
1341
1342         jtag_add_plain_dr_scan(1, &field, TAP_TLR);
1343         jtag_execute_queue();
1344
1345         for (i = 0; i < JTAG_MAX_CHAIN_SIZE * 4; i++)
1346         {
1347                 zero_check |= idcode_buffer[i];
1348                 one_check &= idcode_buffer[i];
1349         }
1350
1351         /* if there wasn't a single non-zero bit or if all bits were one, the scan isn't valid */
1352         if ((zero_check == 0x00) || (one_check == 0xff))
1353         {
1354                 LOG_ERROR("JTAG communication failure, check connection, JTAG interface, target power etc.");
1355                 return ERROR_JTAG_INIT_FAILED;
1356         }
1357
1358         for (bit_count = 0; bit_count < (JTAG_MAX_CHAIN_SIZE * 32) - 31;)
1359         {
1360                 u32 idcode = buf_get_u32(idcode_buffer, bit_count, 32);
1361                 if ((idcode & 1) == 0)
1362                 {
1363                         /* LSB must not be 0, this indicates a device in bypass */
1364                         device_count++;
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                                 /* End of chain (invalid manufacturer ID) */
1377                                 break;
1378                         }
1379
1380                         if (device)
1381                         {
1382                                 device->idcode = idcode;
1383                                 device = device->next;
1384                         }
1385                         device_count++;
1386
1387                         manufacturer = (idcode & 0xffe) >> 1;
1388                         part = (idcode & 0xffff000) >> 12;
1389                         version = (idcode & 0xf0000000) >> 28;
1390
1391                         LOG_INFO("JTAG device found: 0x%8.8x (Manufacturer: 0x%3.3x, Part: 0x%4.4x, Version: 0x%1.1x)",
1392                                 idcode, manufacturer, part, version);
1393
1394                         bit_count += 32;
1395                 }
1396         }
1397
1398         /* see if number of discovered devices matches configuration */
1399         if (device_count != jtag_num_devices)
1400         {
1401                 LOG_ERROR("number of discovered devices in JTAG chain (%i) doesn't match configuration (%i)",
1402                                 device_count, jtag_num_devices);
1403                 LOG_ERROR("check the config file and ensure proper JTAG communication (connections, speed, ...)");
1404                 return ERROR_JTAG_INIT_FAILED;
1405         }
1406
1407         return ERROR_OK;
1408 }
1409
1410 int jtag_validate_chain()
1411 {
1412         jtag_device_t *device = jtag_devices;
1413         int total_ir_length = 0;
1414         u8 *ir_test = NULL;
1415         scan_field_t field;
1416         int chain_pos = 0;
1417
1418         while (device)
1419         {
1420                 total_ir_length += device->ir_length;
1421                 device = device->next;
1422         }
1423
1424         total_ir_length += 2;
1425         ir_test = malloc(CEIL(total_ir_length, 8));
1426         buf_set_ones(ir_test, total_ir_length);
1427
1428         field.device = 0;
1429         field.num_bits = total_ir_length;
1430         field.out_value = ir_test;
1431         field.out_mask = NULL;
1432         field.in_value = ir_test;
1433         field.in_check_value = NULL;
1434         field.in_check_mask = NULL;
1435         field.in_handler = NULL;
1436         field.in_handler_priv = NULL;
1437
1438         jtag_add_plain_ir_scan(1, &field, TAP_TLR);
1439         jtag_execute_queue();
1440
1441         device = jtag_devices;
1442         while (device)
1443         {
1444                 if (buf_get_u32(ir_test, chain_pos, 2) != 0x1)
1445                 {
1446                         char *cbuf = buf_to_str(ir_test, total_ir_length, 16);
1447                         LOG_ERROR("Error validating JTAG scan chain, IR mismatch, scan returned 0x%s", cbuf);
1448                         free(cbuf);
1449                         free(ir_test);
1450                         return ERROR_JTAG_INIT_FAILED;
1451                 }
1452                 chain_pos += device->ir_length;
1453                 device = device->next;
1454         }
1455
1456         if (buf_get_u32(ir_test, chain_pos, 2) != 0x3)
1457         {
1458                 char *cbuf = buf_to_str(ir_test, total_ir_length, 16);
1459                 LOG_ERROR("Error validating JTAG scan chain, IR mismatch, scan returned 0x%s", cbuf);
1460                 free(cbuf);
1461                 free(ir_test);
1462                 return ERROR_JTAG_INIT_FAILED;
1463         }
1464
1465         free(ir_test);
1466
1467         return ERROR_OK;
1468 }
1469
1470 int jtag_register_commands(struct command_context_s *cmd_ctx)
1471 {
1472         register_command(cmd_ctx, NULL, "interface", handle_interface_command,
1473                 COMMAND_CONFIG, NULL);
1474         register_command(cmd_ctx, NULL, "jtag_speed", handle_jtag_speed_command,
1475                 COMMAND_ANY, "set jtag speed (if supported) <reset speed> [<post reset speed, default value is reset speed>]");
1476         register_command(cmd_ctx, NULL, "jtag_khz", handle_jtag_khz_command,
1477                 COMMAND_ANY, "same as jtag_speed, except it takes maximum khz as arguments. 0 KHz = RTCK.");
1478         register_command(cmd_ctx, NULL, "jtag_device", handle_jtag_device_command,
1479                 COMMAND_CONFIG, "jtag_device <ir_length> <ir_expected> <ir_mask>");
1480         register_command(cmd_ctx, NULL, "reset_config", handle_reset_config_command,
1481                 COMMAND_CONFIG, NULL);
1482         register_command(cmd_ctx, NULL, "jtag_nsrst_delay", handle_jtag_nsrst_delay_command,
1483                 COMMAND_ANY, "jtag_nsrst_delay <ms> - delay after deasserting srst in ms");
1484         register_command(cmd_ctx, NULL, "jtag_ntrst_delay", handle_jtag_ntrst_delay_command,
1485                 COMMAND_ANY, "jtag_ntrst_delay <ms> - delay after deasserting trst in ms");
1486
1487         register_command(cmd_ctx, NULL, "scan_chain", handle_scan_chain_command,
1488                 COMMAND_EXEC, "print current scan chain configuration");
1489
1490         register_command(cmd_ctx, NULL, "endstate", handle_endstate_command,
1491                 COMMAND_EXEC, "finish JTAG operations in <tap_state>");
1492         register_command(cmd_ctx, NULL, "jtag_reset", handle_jtag_reset_command,
1493                 COMMAND_EXEC, "toggle reset lines <trst> <srst>");
1494         register_command(cmd_ctx, NULL, "runtest", handle_runtest_command,
1495                 COMMAND_EXEC, "move to Run-Test/Idle, and execute <num_cycles>");
1496         register_command(cmd_ctx, NULL, "irscan", handle_irscan_command,
1497                 COMMAND_EXEC, "execute IR scan <device> <instr> [dev2] [instr2] ...");
1498         register_jim(cmd_ctx, "drscan", Jim_Command_drscan, "execute DR scan <device> <num_bits> <value> <num_bits1> <value2> ...");
1499
1500         register_command(cmd_ctx, NULL, "verify_ircapture", handle_verify_ircapture_command,
1501                 COMMAND_ANY, "verify value captured during Capture-IR <enable|disable>");
1502         return ERROR_OK;
1503 }
1504
1505 int jtag_interface_init(struct command_context_s *cmd_ctx)
1506 {
1507         if (jtag)
1508                 return ERROR_OK;
1509
1510         if (!jtag_interface)
1511         {
1512                 /* nothing was previously specified by "interface" command */
1513                 LOG_ERROR("JTAG interface has to be specified, see \"interface\" command");
1514                 return ERROR_JTAG_INVALID_INTERFACE;
1515         }
1516         if(hasKHz)
1517         {
1518                 /*stay on "reset speed"*/
1519                 jtag_interface->khz(speed1, &jtag_speed);
1520                 jtag_interface->khz(speed2, &jtag_speed_post_reset);
1521                 hasKHz = 0;
1522         }
1523
1524         if (jtag_interface->init() != ERROR_OK)
1525                 return ERROR_JTAG_INIT_FAILED;
1526
1527
1528
1529         jtag = jtag_interface;
1530         return ERROR_OK;
1531 }
1532
1533 static int jtag_init_inner(struct command_context_s *cmd_ctx)
1534 {
1535         int validate_tries = 0;
1536         jtag_device_t *device;
1537         int retval;
1538
1539         LOG_DEBUG("Init JTAG chain");
1540
1541         device = jtag_devices;
1542         jtag_ir_scan_size = 0;
1543         jtag_num_devices = 0;
1544         while (device != NULL)
1545         {
1546                 jtag_ir_scan_size += device->ir_length;
1547                 jtag_num_devices++;
1548                 device = device->next;
1549         }
1550
1551         jtag_add_tlr();
1552         if ((retval=jtag_execute_queue())!=ERROR_OK)
1553                 return retval;
1554
1555         /* examine chain first, as this could discover the real chain layout */
1556         if (jtag_examine_chain() != ERROR_OK)
1557         {
1558                 LOG_ERROR("trying to validate configured JTAG chain anyway...");
1559         }
1560
1561         while (jtag_validate_chain() != ERROR_OK)
1562         {
1563                 validate_tries++;
1564
1565                 if (validate_tries > 5)
1566                 {
1567                         LOG_ERROR("Could not validate JTAG chain, exit");
1568                         return ERROR_JTAG_INVALID_INTERFACE;
1569                 }
1570                 usleep(10000);
1571         }
1572
1573         return ERROR_OK;
1574 }
1575
1576 int jtag_init_reset(struct command_context_s *cmd_ctx)
1577 {
1578         int retval;
1579
1580         if ((retval=jtag_interface_init(cmd_ctx)) != ERROR_OK)
1581                 return retval;
1582
1583         LOG_DEBUG("Trying to bring the JTAG controller to life by asserting TRST / TLR");
1584
1585         /* Reset can happen after a power cycle.
1586          *
1587          * Ideally we would only assert TRST or run TLR before the target reset.
1588          *
1589          * However w/srst_pulls_trst, trst is asserted together with the target
1590          * reset whether we want it or not.
1591          *
1592          * NB! Some targets have JTAG circuitry disabled until a
1593          * trst & srst has been asserted.
1594          *
1595          * NB! here we assume nsrst/ntrst delay are sufficient!
1596          *
1597          * NB! order matters!!!! srst *can* disconnect JTAG circuitry
1598          *
1599          */
1600         jtag_add_reset(1, 0); /* TLR or TRST */
1601         if (jtag_reset_config & RESET_HAS_SRST)
1602         {
1603                 jtag_add_reset(1, 1);
1604                 if ((jtag_reset_config & RESET_SRST_PULLS_TRST)==0)
1605                         jtag_add_reset(0, 1);
1606         }
1607         jtag_add_reset(0, 0);
1608         if ((retval = jtag_execute_queue()) != ERROR_OK)
1609                 return retval;
1610
1611         /* Check that we can communication on the JTAG chain + eventually we want to
1612          * be able to perform enumeration only after OpenOCD has started
1613          * telnet and GDB server
1614          *
1615          * That would allow users to more easily perform any magic they need to before
1616          * reset happens.
1617          */
1618         return jtag_init_inner(cmd_ctx);
1619 }
1620
1621 int jtag_init(struct command_context_s *cmd_ctx)
1622 {
1623         int retval;
1624         if ((retval=jtag_interface_init(cmd_ctx)) != ERROR_OK)
1625                 return retval;
1626         if (jtag_init_inner(cmd_ctx)==ERROR_OK)
1627         {
1628                 return ERROR_OK;
1629         }
1630         return jtag_init_reset(cmd_ctx);
1631 }
1632
1633
1634 static int default_khz(int khz, int *jtag_speed)
1635 {
1636         LOG_ERROR("Translation from khz to jtag_speed not implemented");
1637         return ERROR_FAIL;
1638 }
1639
1640 static int default_speed_div(int speed, int *khz)
1641 {
1642         return ERROR_FAIL;
1643 }
1644
1645 int handle_interface_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1646 {
1647         int i;
1648
1649         /* check whether the interface is already configured */
1650         if (jtag_interface)
1651         {
1652                 LOG_WARNING("Interface already configured, ignoring");
1653                 return ERROR_OK;
1654         }
1655
1656         /* interface name is a mandatory argument */
1657         if (argc < 1 || args[0][0] == '\0')
1658         {
1659                 return ERROR_COMMAND_SYNTAX_ERROR;
1660         }
1661
1662         for (i=0; jtag_interfaces[i]; i++)
1663         {
1664                 if (strcmp(args[0], jtag_interfaces[i]->name) == 0)
1665                 {
1666                         if (jtag_interfaces[i]->register_commands(cmd_ctx) != ERROR_OK)
1667                                 exit(-1);
1668
1669                         jtag_interface = jtag_interfaces[i];
1670
1671                         if (jtag_interface->khz == NULL)
1672                         {
1673                                 jtag_interface->khz = default_khz;
1674                         }
1675                         if (jtag_interface->speed_div == NULL)
1676                         {
1677                                 jtag_interface->speed_div = default_speed_div;
1678                         }
1679                         return ERROR_OK;
1680                 }
1681         }
1682
1683         /* no valid interface was found (i.e. the configuration option,
1684          * didn't match one of the compiled-in interfaces
1685          */
1686         LOG_ERROR("No valid jtag interface found (%s)", args[0]);
1687         LOG_ERROR("compiled-in jtag interfaces:");
1688         for (i = 0; jtag_interfaces[i]; i++)
1689         {
1690                 LOG_ERROR("%i: %s", i, jtag_interfaces[i]->name);
1691         }
1692
1693         return ERROR_JTAG_INVALID_INTERFACE;
1694 }
1695
1696 int handle_jtag_device_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1697 {
1698         jtag_device_t **last_device_p = &jtag_devices;
1699
1700         if (*last_device_p)
1701         {
1702                 while ((*last_device_p)->next)
1703                         last_device_p = &((*last_device_p)->next);
1704                 last_device_p = &((*last_device_p)->next);
1705         }
1706
1707         if (argc < 3)
1708                 return ERROR_OK;
1709
1710         *last_device_p = malloc(sizeof(jtag_device_t));
1711         (*last_device_p)->ir_length = strtoul(args[0], NULL, 0);
1712
1713         (*last_device_p)->expected = malloc((*last_device_p)->ir_length);
1714         buf_set_u32((*last_device_p)->expected, 0, (*last_device_p)->ir_length, strtoul(args[1], NULL, 0));
1715         (*last_device_p)->expected_mask = malloc((*last_device_p)->ir_length);
1716         buf_set_u32((*last_device_p)->expected_mask, 0, (*last_device_p)->ir_length, strtoul(args[2], NULL, 0));
1717
1718         (*last_device_p)->cur_instr = malloc((*last_device_p)->ir_length);
1719         (*last_device_p)->bypass = 1;
1720         buf_set_ones((*last_device_p)->cur_instr, (*last_device_p)->ir_length);
1721
1722         (*last_device_p)->next = NULL;
1723
1724         jtag_register_event_callback(jtag_reset_callback, (*last_device_p));
1725
1726         jtag_num_devices++;
1727
1728         return ERROR_OK;
1729 }
1730
1731 int handle_scan_chain_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1732 {
1733         jtag_device_t *device = jtag_devices;
1734         int device_count = 0;
1735
1736         while (device)
1737         {
1738                 u32 expected, expected_mask, cur_instr;
1739                 expected = buf_get_u32(device->expected, 0, device->ir_length);
1740                 expected_mask = buf_get_u32(device->expected_mask, 0, device->ir_length);
1741                 cur_instr = buf_get_u32(device->cur_instr, 0, device->ir_length);
1742                 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);
1743                 device = device->next;
1744                 device_count++;
1745         }
1746
1747         return ERROR_OK;
1748 }
1749
1750 int handle_reset_config_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1751 {
1752         if (argc < 1)
1753                 return ERROR_COMMAND_SYNTAX_ERROR;
1754
1755         if (argc >= 1)
1756         {
1757                 if (strcmp(args[0], "none") == 0)
1758                         jtag_reset_config = RESET_NONE;
1759                 else if (strcmp(args[0], "trst_only") == 0)
1760                         jtag_reset_config = RESET_HAS_TRST;
1761                 else if (strcmp(args[0], "srst_only") == 0)
1762                         jtag_reset_config = RESET_HAS_SRST;
1763                 else if (strcmp(args[0], "trst_and_srst") == 0)
1764                         jtag_reset_config = RESET_TRST_AND_SRST;
1765                 else
1766                 {
1767                         LOG_ERROR("invalid reset_config argument, defaulting to none");
1768                         jtag_reset_config = RESET_NONE;
1769                         return ERROR_INVALID_ARGUMENTS;
1770                 }
1771         }
1772
1773         if (argc >= 2)
1774         {
1775                 if (strcmp(args[1], "separate") == 0)
1776                 {
1777                         /* seperate reset lines - default */
1778                 } else
1779                 {
1780                         if (strcmp(args[1], "srst_pulls_trst") == 0)
1781                                 jtag_reset_config |= RESET_SRST_PULLS_TRST;
1782                         else if (strcmp(args[1], "trst_pulls_srst") == 0)
1783                                 jtag_reset_config |= RESET_TRST_PULLS_SRST;
1784                         else if (strcmp(args[1], "combined") == 0)
1785                                 jtag_reset_config |= RESET_SRST_PULLS_TRST | RESET_TRST_PULLS_SRST;
1786                         else
1787                         {
1788                                 LOG_ERROR("invalid reset_config argument, defaulting to none");
1789                                 jtag_reset_config = RESET_NONE;
1790                                 return ERROR_INVALID_ARGUMENTS;
1791                         }
1792                 }
1793         }
1794
1795         if (argc >= 3)
1796         {
1797                 if (strcmp(args[2], "trst_open_drain") == 0)
1798                         jtag_reset_config |= RESET_TRST_OPEN_DRAIN;
1799                 else if (strcmp(args[2], "trst_push_pull") == 0)
1800                         jtag_reset_config &= ~RESET_TRST_OPEN_DRAIN;
1801                 else
1802                 {
1803                         LOG_ERROR("invalid reset_config argument, defaulting to none");
1804                         jtag_reset_config = RESET_NONE;
1805                         return ERROR_INVALID_ARGUMENTS;
1806                 }
1807         }
1808
1809         if (argc >= 4)
1810         {
1811                 if (strcmp(args[3], "srst_push_pull") == 0)
1812                         jtag_reset_config |= RESET_SRST_PUSH_PULL;
1813                 else if (strcmp(args[3], "srst_open_drain") == 0)
1814                         jtag_reset_config &= ~RESET_SRST_PUSH_PULL;
1815                 else
1816                 {
1817                         LOG_ERROR("invalid reset_config argument, defaulting to none");
1818                         jtag_reset_config = RESET_NONE;
1819                         return ERROR_INVALID_ARGUMENTS;
1820                 }
1821         }
1822
1823         return ERROR_OK;
1824 }
1825
1826 int handle_jtag_nsrst_delay_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1827 {
1828         if (argc < 1)
1829         {
1830                 LOG_ERROR("jtag_nsrst_delay <ms> command takes one required argument");
1831                 exit(-1);
1832         }
1833         else
1834         {
1835                 jtag_nsrst_delay = strtoul(args[0], NULL, 0);
1836         }
1837
1838         return ERROR_OK;
1839 }
1840
1841 int handle_jtag_ntrst_delay_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1842 {
1843         if (argc < 1)
1844         {
1845                 LOG_ERROR("jtag_ntrst_delay <ms> command takes one required argument");
1846                 exit(-1);
1847         }
1848         else
1849         {
1850                 jtag_ntrst_delay = strtoul(args[0], NULL, 0);
1851         }
1852
1853         return ERROR_OK;
1854 }
1855
1856 int handle_jtag_speed_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1857 {
1858         int cur_speed = 0;
1859
1860         if (argc != 0)
1861         {
1862                 if ((argc<1) || (argc>2))
1863                         return ERROR_COMMAND_SYNTAX_ERROR;
1864
1865                 LOG_DEBUG("handle jtag speed");
1866
1867                 if (argc >= 1)
1868                         cur_speed = jtag_speed = jtag_speed_post_reset = strtoul(args[0], NULL, 0);
1869                 if (argc == 2)
1870                         cur_speed = jtag_speed_post_reset = strtoul(args[1], NULL, 0);
1871
1872                 /* this command can be called during CONFIG,
1873                  * in which case jtag isn't initialized */
1874                 if (jtag)
1875                 {
1876                         jtag->speed_div(jtag_speed, &speed1);
1877                         jtag->speed_div(jtag_speed_post_reset, &speed2);
1878                         jtag->speed(cur_speed);
1879                 }
1880         }
1881         command_print(cmd_ctx, "jtag_speed: %d, %d", jtag_speed, jtag_speed_post_reset);
1882
1883         return ERROR_OK;
1884 }
1885
1886 int handle_jtag_khz_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1887 {
1888         LOG_DEBUG("handle jtag khz");
1889
1890         if (argc>2)
1891                 return ERROR_COMMAND_SYNTAX_ERROR;
1892
1893         if(argc != 0)
1894         {
1895
1896                 if (argc >= 1)
1897                         speed1 = speed2 = strtoul(args[0], NULL, 0);
1898                 if (argc == 2)
1899                         speed2 = strtoul(args[1], NULL, 0);
1900
1901                 if (jtag != NULL)
1902                 {
1903                         int cur_speed = 0;
1904                         LOG_DEBUG("have interface set up");
1905                         int speed_div1, speed_div2;
1906                         if (jtag->khz(speed1, &speed_div1)!=ERROR_OK)
1907                         {
1908                                 speed1 = speed2 = 0;
1909                                 return ERROR_OK;
1910                         }
1911                         if (jtag->khz(speed2, &speed_div2)!=ERROR_OK)
1912                         {
1913                                 speed1 = speed2 = 0;
1914                                 return ERROR_OK;
1915                         }
1916
1917                         if (argc >= 1)
1918                                 cur_speed = jtag_speed = jtag_speed_post_reset = speed_div1;
1919                         if (argc == 2)
1920                                 cur_speed = jtag_speed_post_reset = speed_div2;
1921
1922                         jtag->speed(cur_speed);
1923                 } else
1924                 {
1925                         hasKHz = 1;
1926                 }
1927         }
1928         command_print(cmd_ctx, "jtag_khz: %d, %d", speed1, speed2);
1929
1930         return ERROR_OK;
1931 }
1932
1933
1934 int handle_endstate_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1935 {
1936         enum tap_state state;
1937
1938         if (argc < 1)
1939         {
1940                 return ERROR_COMMAND_SYNTAX_ERROR;
1941         }
1942         else
1943         {
1944                 for (state = 0; state < 16; state++)
1945                 {
1946                         if (strcmp(args[0], tap_state_strings[state]) == 0)
1947                         {
1948                                 jtag_add_end_state(state);
1949                                 jtag_execute_queue();
1950                         }
1951                 }
1952         }
1953         command_print(cmd_ctx, "current endstate: %s", tap_state_strings[cmd_queue_end_state]);
1954
1955         return ERROR_OK;
1956 }
1957
1958 int handle_jtag_reset_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1959 {
1960         int trst = -1;
1961         int srst = -1;
1962
1963         if (argc < 2)
1964         {
1965                 return ERROR_COMMAND_SYNTAX_ERROR;
1966         }
1967
1968         if (args[0][0] == '1')
1969                 trst = 1;
1970         else if (args[0][0] == '0')
1971                 trst = 0;
1972         else
1973         {
1974                 return ERROR_COMMAND_SYNTAX_ERROR;
1975         }
1976
1977         if (args[1][0] == '1')
1978                 srst = 1;
1979         else if (args[1][0] == '0')
1980                 srst = 0;
1981         else
1982         {
1983                 return ERROR_COMMAND_SYNTAX_ERROR;
1984         }
1985
1986         if (jtag_interface_init(cmd_ctx) != ERROR_OK)
1987                 return ERROR_JTAG_INIT_FAILED;
1988
1989         jtag_add_reset(trst, srst);
1990         jtag_execute_queue();
1991
1992         return ERROR_OK;
1993 }
1994
1995 int handle_runtest_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1996 {
1997         if (argc < 1)
1998         {
1999                 return ERROR_COMMAND_SYNTAX_ERROR;
2000         }
2001
2002         jtag_add_runtest(strtol(args[0], NULL, 0), -1);
2003         jtag_execute_queue();
2004
2005         return ERROR_OK;
2006
2007 }
2008
2009
2010 int handle_irscan_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2011 {
2012         int i;
2013         scan_field_t *fields;
2014
2015         if ((argc < 2) || (argc % 2))
2016         {
2017                 return ERROR_COMMAND_SYNTAX_ERROR;
2018         }
2019
2020         fields = malloc(sizeof(scan_field_t) * argc / 2);
2021
2022         for (i = 0; i < argc / 2; i++)
2023         {
2024                 int device = strtoul(args[i*2], NULL, 0);
2025                 int field_size = jtag_get_device(device)->ir_length;
2026                 fields[i].device = device;
2027                 fields[i].out_value = malloc(CEIL(field_size, 8));
2028                 buf_set_u32(fields[i].out_value, 0, field_size, strtoul(args[i*2+1], NULL, 0));
2029                 fields[i].out_mask = NULL;
2030                 fields[i].in_value = NULL;
2031                 fields[i].in_check_mask = NULL;
2032                 fields[i].in_handler = NULL;
2033                 fields[i].in_handler_priv = NULL;
2034         }
2035
2036         jtag_add_ir_scan(argc / 2, fields, -1);
2037         jtag_execute_queue();
2038
2039         for (i = 0; i < argc / 2; i++)
2040                 free(fields[i].out_value);
2041
2042         free (fields);
2043
2044         return ERROR_OK;
2045 }
2046
2047 int Jim_Command_drscan(Jim_Interp *interp, int argc, Jim_Obj *const *args)
2048 {
2049         int retval;
2050         scan_field_t *fields;
2051         int num_fields;
2052         int field_count = 0;
2053         int i, j, e;
2054         long device;
2055
2056         /* args[1] = device
2057          * args[2] = num_bits
2058          * args[3] = hex string
2059          * ... repeat num bits and hex string ...
2060          */
2061         if ((argc < 4) || ((argc % 2)!=0))
2062         {
2063                 Jim_WrongNumArgs(interp, 1, args, "wrong arguments");
2064                 return JIM_ERR;
2065         }
2066
2067         for (i = 2; i < argc; i+=2)
2068         {
2069                 long bits;
2070
2071                 e = Jim_GetLong(interp, args[i], &bits);
2072                 if (e != JIM_OK)
2073                         return e;
2074         }
2075
2076         e = Jim_GetLong(interp, args[1], &device);
2077         if (e != JIM_OK)
2078                 return e;
2079
2080         num_fields=(argc-2)/2;
2081         fields = malloc(sizeof(scan_field_t) * num_fields);
2082         for (i = 2; i < argc; i+=2)
2083         {
2084                 long bits;
2085                 int len;
2086                 const char *str;
2087
2088                 Jim_GetLong(interp, args[i], &bits);
2089                 str = Jim_GetString(args[i+1], &len);
2090
2091                 fields[field_count].device = device;
2092                 fields[field_count].num_bits = bits;
2093                 fields[field_count].out_value = malloc(CEIL(bits, 8));
2094                 str_to_buf(str, len, fields[field_count].out_value, bits, 0);
2095                 fields[field_count].out_mask = NULL;
2096                 fields[field_count].in_value = fields[field_count].out_value;
2097                 fields[field_count].in_check_mask = NULL;
2098                 fields[field_count].in_check_value = NULL;
2099                 fields[field_count].in_handler = NULL;
2100                 fields[field_count++].in_handler_priv = NULL;
2101         }
2102
2103         jtag_add_dr_scan(num_fields, fields, -1);
2104         retval = jtag_execute_queue();
2105         if (retval != ERROR_OK)
2106         {
2107                 Jim_SetResult(interp, Jim_NewEmptyStringObj(interp));
2108                 Jim_AppendStrings(interp, Jim_GetResult(interp), "drscan: jtag execute failed", NULL);
2109                 return JIM_ERR;
2110         }
2111
2112         field_count=0;
2113         Jim_Obj *list = Jim_NewListObj(interp, NULL, 0);
2114         for (i = 2; i < argc; i+=2)
2115         {
2116                 long bits;
2117                 char *str;
2118
2119                 Jim_GetLong(interp, args[i], &bits);
2120                 str = buf_to_str(fields[field_count].in_value, bits, 16);
2121                 free(fields[field_count].out_value);
2122
2123                 Jim_ListAppendElement(interp, list, Jim_NewStringObj(interp, str, strlen(str)));
2124                 free(str);
2125                 field_count++;
2126         }
2127
2128         Jim_SetResult(interp, list);
2129
2130         free(fields);
2131
2132         return JIM_OK;
2133 }
2134
2135 int handle_verify_ircapture_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2136 {
2137         if (argc == 1)
2138         {
2139                 if (strcmp(args[0], "enable") == 0)
2140                 {
2141                         jtag_verify_capture_ir = 1;
2142                 }
2143                 else if (strcmp(args[0], "disable") == 0)
2144                 {
2145                         jtag_verify_capture_ir = 0;
2146                 } else
2147                 {
2148                         return ERROR_COMMAND_SYNTAX_ERROR;
2149                 }
2150         } else if (argc != 0)
2151         {
2152                 return ERROR_COMMAND_SYNTAX_ERROR;
2153         }
2154
2155         command_print(cmd_ctx, "verify Capture-IR is %s", (jtag_verify_capture_ir) ? "enabled": "disabled");
2156
2157         return ERROR_OK;
2158 }