git.gag.com Git - fw/openocd/blob - src/jtag/jtag.c

   1 /***************************************************************************
   2  *   Copyright (C) 2005 by Dominic Rath                                    *
   3  *   Dominic.Rath@gmx.de                                                   *
   4  *                                                                         *
   5  *   This program is free software; you can redistribute it and/or modify  *
   6  *   it under the terms of the GNU General Public License as published by  *
   7  *   the Free Software Foundation; either version 2 of the License, or     *
   8  *   (at your option) any later version.                                   *
   9  *                                                                         *
  10  *   This program is distributed in the hope that it will be useful,       *
  11  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  12  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  13  *   GNU General Public License for more details.                          *
  14  *                                                                         *
  15  *   You should have received a copy of the GNU General Public License     *
  16  *   along with this program; if not, write to the                         *
  17  *   Free Software Foundation, Inc.,                                       *
  18  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
  19  ***************************************************************************/
  20 #ifdef HAVE_CONFIG_H
  21 #include "config.h"
  22 #endif
  23
  24 #include "replacements.h"
  25
  26 #include "jtag.h"
  27
  28 #include "command.h"
  29 #include "log.h"
  30 #include "interpreter.h"
  31
  32 #include "stdlib.h"
  33 #include "string.h"
  34 #include <unistd.h>
  35
  36
  37
  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         "SRST asserted",
 111         "TRST asserted",
 112         "SRST released",
 113         "TRST released"
 114 };
 115
 116 enum tap_state end_state = TAP_TLR;
 117 enum tap_state cur_state = TAP_TLR;
 118 int jtag_trst = 0;
 119 int jtag_srst = 0;
 120
 121 jtag_command_t *jtag_command_queue = NULL;
 122 jtag_command_t **last_comand_pointer = &jtag_command_queue;
 123 jtag_device_t *jtag_devices = NULL;
 124 int jtag_num_devices = 0;
 125 int jtag_ir_scan_size = 0;
 126 enum reset_types jtag_reset_config = RESET_NONE;
 127 enum tap_state cmd_queue_end_state = TAP_TLR;
 128 enum tap_state cmd_queue_cur_state = TAP_TLR;
 129
 130 int jtag_verify_capture_ir = 1;
 131
 132 /* how long the OpenOCD should wait before attempting JTAG communication after reset lines deasserted (in ms) */
 133 int jtag_nsrst_delay = 0; /* default to no nSRST delay */
 134 int jtag_ntrst_delay = 0; /* default to no nTRST delay */
 135
 136 /* maximum number of JTAG devices expected in the chain
 137  */
 138 #define JTAG_MAX_CHAIN_SIZE 20
 139
 140 /* callbacks to inform high-level handlers about JTAG state changes */
 141 jtag_event_callback_t *jtag_event_callbacks;
 142
 143 /* jtag interfaces (parport, FTDI-USB, TI-USB, ...)
 144  */
 145 #if BUILD_PARPORT == 1
 146         extern jtag_interface_t parport_interface;
 147 #endif
 148
 149 #if BUILD_FT2232_FTD2XX == 1
 150         extern jtag_interface_t ft2232_interface;
 151 #endif
 152
 153 #if BUILD_FT2232_LIBFTDI == 1
 154         extern jtag_interface_t ft2232_interface;
 155 #endif
 156
 157 #if BUILD_AMTJTAGACCEL == 1
 158         extern jtag_interface_t amt_jtagaccel_interface;
 159 #endif
 160
 161 #if BUILD_EP93XX == 1
 162         extern jtag_interface_t ep93xx_interface;
 163 #endif
 164
 165 #if BUILD_AT91RM9200 == 1
 166         extern jtag_interface_t at91rm9200_interface;
 167 #endif
 168
 169 #if BUILD_GW16012 == 1
 170         extern jtag_interface_t gw16012_interface;
 171 #endif
 172
 173 #if BUILD_PRESTO_LIBFTDI == 1 || BUILD_PRESTO_FTD2XX == 1
 174         extern jtag_interface_t presto_interface;
 175 #endif
 176
 177 #if BUILD_USBPROG == 1
 178         extern jtag_interface_t usbprog_interface;
 179 #endif
 180
 181 jtag_interface_t *jtag_interfaces[] = {
 182 #if BUILD_PARPORT == 1
 183         &parport_interface,
 184 #endif
 185 #if BUILD_FT2232_FTD2XX == 1
 186         &ft2232_interface,
 187 #endif
 188 #if BUILD_FT2232_LIBFTDI == 1
 189         &ft2232_interface,
 190 #endif
 191 #if BUILD_AMTJTAGACCEL == 1
 192         &amt_jtagaccel_interface,
 193 #endif
 194 #if BUILD_EP93XX == 1
 195         &ep93xx_interface,
 196 #endif
 197 #if BUILD_AT91RM9200 == 1
 198         &at91rm9200_interface,
 199 #endif
 200 #if BUILD_GW16012 == 1
 201         &gw16012_interface,
 202 #endif
 203 #if BUILD_PRESTO_LIBFTDI == 1 || BUILD_PRESTO_FTD2XX == 1
 204         &presto_interface,
 205 #endif
 206 #if BUILD_USBPROG == 1
 207         &usbprog_interface,
 208 #endif
 209         NULL,
 210 };
 211
 212 jtag_interface_t *jtag = NULL;
 213
 214 /* configuration */
 215 jtag_interface_t *jtag_interface = NULL;
 216 int jtag_speed = 0;
 217
 218
 219 /* forward declarations */
 220 int jtag_add_statemove(enum tap_state endstate);
 221 int jtag_add_pathmove(int num_states, enum tap_state *path);
 222 int jtag_add_runtest(int num_cycles, enum tap_state endstate);
 223 int jtag_add_reset(int trst, int srst);
 224 int jtag_add_end_state(enum tap_state endstate);
 225 int jtag_add_sleep(u32 us);
 226 int jtag_execute_queue(void);
 227 int jtag_cancel_queue(void);
 228
 229 /* jtag commands */
 230 int handle_interface_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 231 int handle_jtag_speed_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 232 int handle_jtag_device_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 233 int handle_reset_config_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 234 int handle_jtag_nsrst_delay_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 235 int handle_jtag_ntrst_delay_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 236
 237 int handle_scan_chain_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 238
 239 int handle_endstate_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 240 int handle_jtag_reset_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 241 int handle_runtest_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 242 int handle_statemove_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 243 int handle_irscan_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 244 int handle_drscan_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 245
 246 int handle_verify_ircapture_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 247
 248 int jtag_register_event_callback(int (*callback)(enum jtag_event event, void *priv), void *priv)
 249 {
 250         jtag_event_callback_t **callbacks_p = &jtag_event_callbacks;
 251
 252         if (callback == NULL)
 253         {
 254                 return ERROR_INVALID_ARGUMENTS;
 255         }
 256
 257         if (*callbacks_p)
 258         {
 259                 while ((*callbacks_p)->next)
 260                         callbacks_p = &((*callbacks_p)->next);
 261                 callbacks_p = &((*callbacks_p)->next);
 262         }
 263
 264         (*callbacks_p) = malloc(sizeof(jtag_event_callback_t));
 265         (*callbacks_p)->callback = callback;
 266         (*callbacks_p)->priv = priv;
 267         (*callbacks_p)->next = NULL;
 268
 269         return ERROR_OK;
 270 }
 271
 272 int jtag_unregister_event_callback(int (*callback)(enum jtag_event event, void *priv))
 273 {
 274         jtag_event_callback_t **callbacks_p = &jtag_event_callbacks;
 275
 276         if (callback == NULL)
 277         {
 278                 return ERROR_INVALID_ARGUMENTS;
 279         }
 280
 281         while (*callbacks_p)
 282         {
 283                 jtag_event_callback_t **next = &((*callbacks_p)->next);
 284                 if ((*callbacks_p)->callback == callback)
 285                 {
 286                         free(*callbacks_p);
 287                         *callbacks_p = *next;
 288                 }
 289                 callbacks_p = next;
 290         }
 291
 292         return ERROR_OK;
 293 }
 294
 295 int jtag_call_event_callbacks(enum jtag_event event)
 296 {
 297         jtag_event_callback_t *callback = jtag_event_callbacks;
 298
 299         DEBUG("jtag event: %s", jtag_event_strings[event]);
 300
 301         while (callback)
 302         {
 303                 callback->callback(event, callback->priv);
 304                 callback = callback->next;
 305         }
 306
 307         return ERROR_OK;
 308 }
 309
 310 /* returns a pointer to the pointer of the last command in queue
 311  * this may be a pointer to the root pointer (jtag_command_queue)
 312  * or to the next member of the last but one command
 313  */
 314 jtag_command_t** jtag_get_last_command_p(void)
 315 {
 316 /*      jtag_command_t *cmd = jtag_command_queue;
 317
 318         if (cmd)
 319                 while (cmd->next)
 320                         cmd = cmd->next;
 321         else
 322                 return &jtag_command_queue;
 323
 324         return &cmd->next;*/
 325
 326         return last_comand_pointer;
 327 }
 328
 329 /* returns a pointer to the n-th device in the scan chain */
 330 jtag_device_t* jtag_get_device(int num)
 331 {
 332         jtag_device_t *device = jtag_devices;
 333         int i = 0;
 334
 335         while (device)
 336         {
 337                 if (num == i)
 338                         return device;
 339                 device = device->next;
 340                 i++;
 341         }
 342
 343         ERROR("jtag device number %d not defined", num);
 344         exit(-1);
 345 }
 346
 347 void* cmd_queue_alloc(size_t size)
 348 {
 349         cmd_queue_page_t **p_page = &cmd_queue_pages;
 350         int offset;
 351
 352         if (*p_page)
 353         {
 354                 while ((*p_page)->next)
 355                         p_page = &((*p_page)->next);
 356                 if (CMD_QUEUE_PAGE_SIZE - (*p_page)->used < size)
 357                         p_page = &((*p_page)->next);
 358         }
 359
 360         if (!*p_page)
 361         {
 362                 *p_page = malloc(sizeof(cmd_queue_page_t));
 363                 (*p_page)->used = 0;
 364                 (*p_page)->address = malloc(CMD_QUEUE_PAGE_SIZE);
 365                 (*p_page)->next = NULL;
 366         }
 367
 368         offset = (*p_page)->used;
 369         (*p_page)->used += size;
 370
 371         u8 *t=(u8 *)((*p_page)->address);
 372         return t + offset;
 373 }
 374
 375 void cmd_queue_free()
 376 {
 377         cmd_queue_page_t *page = cmd_queue_pages;
 378
 379         while (page)
 380         {
 381                 cmd_queue_page_t *last = page;
 382                 free(page->address);
 383                 page = page->next;
 384                 free(last);
 385         }
 386
 387         cmd_queue_pages = NULL;
 388 }
 389
 390 int jtag_add_ir_scan(int num_fields, scan_field_t *fields, enum tap_state state)
 391 {
 392         if (jtag_trst == 1)
 393         {
 394                 WARNING("JTAG command queued, while TRST is low (TAP in reset)");
 395                 jtag_error=ERROR_JTAG_TRST_ASSERTED;
 396                 return ERROR_JTAG_TRST_ASSERTED;
 397         }
 398
 399         if (state != -1)
 400                 cmd_queue_end_state = state;
 401
 402         if (cmd_queue_cur_state == TAP_TLR && cmd_queue_end_state != TAP_TLR)
 403                 jtag_call_event_callbacks(JTAG_TRST_RELEASED);
 404
 405         if (cmd_queue_end_state == TAP_TLR)
 406                 jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
 407
 408         cmd_queue_cur_state = cmd_queue_end_state;
 409
 410         int retval=interface_jtag_add_ir_scan(num_fields, fields, cmd_queue_end_state);
 411         if (retval!=ERROR_OK)
 412                 jtag_error=retval;
 413         return retval;
 414 }
 415
 416 int MINIDRIVER(interface_jtag_add_ir_scan)(int num_fields, scan_field_t *fields, enum tap_state state)
 417 {
 418         jtag_command_t **last_cmd;
 419         jtag_device_t *device;
 420         int i, j;
 421         int scan_size = 0;
 422
 423
 424         last_cmd = jtag_get_last_command_p();
 425
 426         /* allocate memory for a new list member */
 427         *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
 428         (*last_cmd)->next = NULL;
 429         last_comand_pointer = &((*last_cmd)->next);
 430         (*last_cmd)->type = JTAG_SCAN;
 431
 432         /* allocate memory for ir scan command */
 433         (*last_cmd)->cmd.scan = cmd_queue_alloc(sizeof(scan_command_t));
 434         (*last_cmd)->cmd.scan->ir_scan = 1;
 435         (*last_cmd)->cmd.scan->num_fields = jtag_num_devices;   /* one field per device */
 436         (*last_cmd)->cmd.scan->fields = cmd_queue_alloc(jtag_num_devices * sizeof(scan_field_t));
 437         (*last_cmd)->cmd.scan->end_state = state;
 438
 439         for (i = 0; i < jtag_num_devices; i++)
 440         {
 441                 int found = 0;
 442                 device = jtag_get_device(i);
 443                 scan_size = device->ir_length;
 444                 (*last_cmd)->cmd.scan->fields[i].device = i;
 445                 (*last_cmd)->cmd.scan->fields[i].num_bits = scan_size;
 446                 (*last_cmd)->cmd.scan->fields[i].in_value = NULL;
 447                 (*last_cmd)->cmd.scan->fields[i].in_handler = NULL;     /* disable verification by default */
 448
 449                 /* search the list */
 450                 for (j = 0; j < num_fields; j++)
 451                 {
 452                         if (i == fields[j].device)
 453                         {
 454                                 found = 1;
 455                                 (*last_cmd)->cmd.scan->fields[i].out_value = buf_cpy(fields[j].out_value, cmd_queue_alloc(CEIL(scan_size, 8)), scan_size);
 456                                 (*last_cmd)->cmd.scan->fields[i].out_mask = buf_cpy(fields[j].out_mask, cmd_queue_alloc(CEIL(scan_size, 8)), scan_size);
 457
 458                                 if (jtag_verify_capture_ir)
 459                                 {
 460                                         if (fields[j].in_handler==NULL)
 461                                         {
 462                                                 jtag_set_check_value((*last_cmd)->cmd.scan->fields+i, device->expected, device->expected_mask, NULL);
 463                                         } else
 464                                         {
 465                                                 (*last_cmd)->cmd.scan->fields[i].in_handler = fields[j].in_handler;
 466                                                 (*last_cmd)->cmd.scan->fields[i].in_handler_priv = fields[j].in_handler_priv;
 467                                                 (*last_cmd)->cmd.scan->fields[i].in_check_value = device->expected;
 468                                                 (*last_cmd)->cmd.scan->fields[i].in_check_mask = device->expected_mask;
 469                                         }
 470                                 }
 471
 472                                 device->bypass = 0;
 473                                 break;
 474                         }
 475                 }
 476
 477                 if (!found)
 478                 {
 479                         /* if a device isn't listed, set it to BYPASS */
 480                         (*last_cmd)->cmd.scan->fields[i].out_value = buf_set_ones(cmd_queue_alloc(CEIL(scan_size, 8)), scan_size);
 481                         (*last_cmd)->cmd.scan->fields[i].out_mask = NULL;
 482                         device->bypass = 1;
 483
 484                 }
 485
 486                 /* update device information */
 487                 buf_cpy((*last_cmd)->cmd.scan->fields[i].out_value, jtag_get_device(i)->cur_instr, scan_size);
 488         }
 489
 490         return ERROR_OK;
 491 }
 492
 493 int jtag_add_plain_ir_scan(int num_fields, scan_field_t *fields, enum tap_state state)
 494 {
 495         if (jtag_trst == 1)
 496         {
 497                 WARNING("JTAG command queued, while TRST is low (TAP in reset)");
 498                 return jtag_error=ERROR_JTAG_TRST_ASSERTED;
 499         }
 500
 501         if (state != -1)
 502                 cmd_queue_end_state = state;
 503
 504         if (cmd_queue_cur_state == TAP_TLR && cmd_queue_end_state != TAP_TLR)
 505                 jtag_call_event_callbacks(JTAG_TRST_RELEASED);
 506
 507         if (cmd_queue_end_state == TAP_TLR)
 508                 jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
 509
 510         cmd_queue_cur_state = cmd_queue_end_state;
 511
 512         return interface_jtag_add_plain_ir_scan(num_fields, fields, cmd_queue_end_state);
 513 }
 514
 515 int MINIDRIVER(interface_jtag_add_plain_ir_scan)(int num_fields, scan_field_t *fields, enum tap_state state)
 516 {
 517         int i;
 518         jtag_command_t **last_cmd;
 519
 520         last_cmd = jtag_get_last_command_p();
 521
 522         /* allocate memory for a new list member */
 523         *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
 524         (*last_cmd)->next = NULL;
 525         last_comand_pointer = &((*last_cmd)->next);
 526         (*last_cmd)->type = JTAG_SCAN;
 527
 528         /* allocate memory for ir scan command */
 529         (*last_cmd)->cmd.scan = cmd_queue_alloc(sizeof(scan_command_t));
 530         (*last_cmd)->cmd.scan->ir_scan = 1;
 531         (*last_cmd)->cmd.scan->num_fields = num_fields;
 532         (*last_cmd)->cmd.scan->fields = cmd_queue_alloc(num_fields * sizeof(scan_field_t));
 533         (*last_cmd)->cmd.scan->end_state = state;
 534
 535         for (i = 0; i < num_fields; i++)
 536         {
 537                 int num_bits = fields[i].num_bits;
 538                 int num_bytes = CEIL(fields[i].num_bits, 8);
 539                 (*last_cmd)->cmd.scan->fields[i].device = fields[i].device;
 540                 (*last_cmd)->cmd.scan->fields[i].num_bits = num_bits;
 541                 (*last_cmd)->cmd.scan->fields[i].out_value = buf_cpy(fields[i].out_value, cmd_queue_alloc(num_bytes), num_bits);
 542                 (*last_cmd)->cmd.scan->fields[i].out_mask = buf_cpy(fields[i].out_mask, cmd_queue_alloc(num_bytes), num_bits);
 543                 (*last_cmd)->cmd.scan->fields[i].in_value = fields[i].in_value;
 544                 (*last_cmd)->cmd.scan->fields[i].in_check_value = fields[i].in_check_value;
 545                 (*last_cmd)->cmd.scan->fields[i].in_check_mask = fields[i].in_check_mask;
 546                 (*last_cmd)->cmd.scan->fields[i].in_handler = NULL;
 547                 (*last_cmd)->cmd.scan->fields[i].in_handler_priv = NULL;
 548         }
 549         return ERROR_OK;
 550 }
 551
 552 int jtag_add_dr_scan(int num_fields, scan_field_t *fields, enum tap_state state)
 553 {
 554         if (jtag_trst == 1)
 555         {
 556                 WARNING("JTAG command queued, while TRST is low (TAP in reset)");
 557                 return jtag_error=ERROR_JTAG_TRST_ASSERTED;
 558         }
 559
 560         if (state != -1)
 561                 cmd_queue_end_state = state;
 562
 563         if (cmd_queue_cur_state == TAP_TLR && cmd_queue_end_state != TAP_TLR)
 564                 jtag_call_event_callbacks(JTAG_TRST_RELEASED);
 565
 566         if (cmd_queue_end_state == TAP_TLR)
 567                 jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
 568
 569         cmd_queue_cur_state = cmd_queue_end_state;
 570
 571         return interface_jtag_add_dr_scan(num_fields, fields, cmd_queue_end_state);
 572 }
 573
 574 int MINIDRIVER(interface_jtag_add_dr_scan)(int num_fields, scan_field_t *fields, enum tap_state state)
 575 {
 576         int i, j;
 577         int bypass_devices = 0;
 578         int field_count = 0;
 579         int scan_size;
 580
 581         jtag_command_t **last_cmd = jtag_get_last_command_p();
 582         jtag_device_t *device = jtag_devices;
 583
 584         /* count devices in bypass */
 585         while (device)
 586         {
 587                 if (device->bypass)
 588                         bypass_devices++;
 589                 device = device->next;
 590         }
 591
 592         /* allocate memory for a new list member */
 593         *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
 594         last_comand_pointer = &((*last_cmd)->next);
 595         (*last_cmd)->next = NULL;
 596         (*last_cmd)->type = JTAG_SCAN;
 597
 598         /* allocate memory for dr scan command */
 599         (*last_cmd)->cmd.scan = cmd_queue_alloc(sizeof(scan_command_t));
 600         (*last_cmd)->cmd.scan->ir_scan = 0;
 601         (*last_cmd)->cmd.scan->num_fields = num_fields + bypass_devices;
 602         (*last_cmd)->cmd.scan->fields = cmd_queue_alloc((num_fields + bypass_devices) * sizeof(scan_field_t));
 603         (*last_cmd)->cmd.scan->end_state = state;
 604
 605         for (i = 0; i < jtag_num_devices; i++)
 606         {
 607                 int found = 0;
 608                 (*last_cmd)->cmd.scan->fields[field_count].device = i;
 609
 610                 for (j = 0; j < num_fields; j++)
 611                 {
 612                         if (i == fields[j].device)
 613                         {
 614                                 found = 1;
 615                                 scan_size = fields[j].num_bits;
 616                                 (*last_cmd)->cmd.scan->fields[field_count].num_bits = scan_size;
 617                                 (*last_cmd)->cmd.scan->fields[field_count].out_value = buf_cpy(fields[j].out_value, cmd_queue_alloc(CEIL(scan_size, 8)), scan_size);
 618                                 (*last_cmd)->cmd.scan->fields[field_count].out_mask = buf_cpy(fields[j].out_mask, cmd_queue_alloc(CEIL(scan_size, 8)), scan_size);
 619                                 (*last_cmd)->cmd.scan->fields[field_count].in_value = fields[j].in_value;
 620                                 (*last_cmd)->cmd.scan->fields[field_count].in_check_value = fields[j].in_check_value;
 621                                 (*last_cmd)->cmd.scan->fields[field_count].in_check_mask = fields[j].in_check_mask;
 622                                 (*last_cmd)->cmd.scan->fields[field_count].in_handler = fields[j].in_handler;
 623                                 (*last_cmd)->cmd.scan->fields[field_count++].in_handler_priv = fields[j].in_handler_priv;
 624                         }
 625                 }
 626                 if (!found)
 627                 {
 628 #ifdef _DEBUG_JTAG_IO_
 629                         /* if a device isn't listed, the BYPASS register should be selected */
 630                         if (!jtag_get_device(i)->bypass)
 631                         {
 632                                 ERROR("BUG: no scan data for a device not in BYPASS");
 633                                 exit(-1);
 634                         }
 635 #endif
 636                         /* program the scan field to 1 bit length, and ignore it's value */
 637                         (*last_cmd)->cmd.scan->fields[field_count].num_bits = 1;
 638                         (*last_cmd)->cmd.scan->fields[field_count].out_value = NULL;
 639                         (*last_cmd)->cmd.scan->fields[field_count].out_mask = NULL;
 640                         (*last_cmd)->cmd.scan->fields[field_count].in_value = NULL;
 641                         (*last_cmd)->cmd.scan->fields[field_count].in_check_value = NULL;
 642                         (*last_cmd)->cmd.scan->fields[field_count].in_check_mask = NULL;
 643                         (*last_cmd)->cmd.scan->fields[field_count].in_handler = NULL;
 644                         (*last_cmd)->cmd.scan->fields[field_count++].in_handler_priv = NULL;
 645                 }
 646                 else
 647                 {
 648 #ifdef _DEBUG_JTAG_IO_
 649                         /* if a device is listed, the BYPASS register must not be selected */
 650                         if (jtag_get_device(i)->bypass)
 651                         {
 652                                 WARNING("scan data for a device in BYPASS");
 653                         }
 654 #endif
 655                 }
 656         }
 657         return ERROR_OK;
 658 }
 659
 660 void MINIDRIVER(interface_jtag_add_dr_out)(int device_num,
 661                 int num_fields,
 662                 int *num_bits,
 663                 u32 *value,
 664                 enum tap_state end_state)
 665 {
 666         int i;
 667         int field_count = 0;
 668         int scan_size;
 669         int bypass_devices = 0;
 670
 671         jtag_command_t **last_cmd = jtag_get_last_command_p();
 672         jtag_device_t *device = jtag_devices;
 673         /* count devices in bypass */
 674         while (device)
 675         {
 676                 if (device->bypass)
 677                         bypass_devices++;
 678                 device = device->next;
 679         }
 680
 681         /* allocate memory for a new list member */
 682         *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
 683         last_comand_pointer = &((*last_cmd)->next);
 684         (*last_cmd)->next = NULL;
 685         (*last_cmd)->type = JTAG_SCAN;
 686
 687         /* allocate memory for dr scan command */
 688         (*last_cmd)->cmd.scan = cmd_queue_alloc(sizeof(scan_command_t));
 689         (*last_cmd)->cmd.scan->ir_scan = 0;
 690         (*last_cmd)->cmd.scan->num_fields = num_fields + bypass_devices;
 691         (*last_cmd)->cmd.scan->fields = cmd_queue_alloc((num_fields + bypass_devices) * sizeof(scan_field_t));
 692         (*last_cmd)->cmd.scan->end_state = end_state;
 693
 694         for (i = 0; i < jtag_num_devices; i++)
 695         {
 696                 (*last_cmd)->cmd.scan->fields[field_count].device = i;
 697
 698                 if (i == device_num)
 699                 {
 700                         int j;
 701 #ifdef _DEBUG_JTAG_IO_
 702                         /* if a device is listed, the BYPASS register must not be selected */
 703                         if (jtag_get_device(i)->bypass)
 704                         {
 705                                 ERROR("scan data for a device in BYPASS");
 706                                 exit(-1);
 707                         }
 708 #endif
 709                         for (j = 0; j < num_fields; j++)
 710                         {
 711                                 char out_value[4];
 712                                 scan_size = num_bits[j];
 713                                 buf_set_u32(out_value, 0, scan_size, value[j]);
 714                                 (*last_cmd)->cmd.scan->fields[field_count].num_bits = scan_size;
 715                                 (*last_cmd)->cmd.scan->fields[field_count].out_value = buf_cpy(out_value, cmd_queue_alloc(CEIL(scan_size, 8)), scan_size);
 716                                 (*last_cmd)->cmd.scan->fields[field_count].out_mask = NULL;
 717                                 (*last_cmd)->cmd.scan->fields[field_count].in_value = NULL;
 718                                 (*last_cmd)->cmd.scan->fields[field_count].in_check_value = NULL;
 719                                 (*last_cmd)->cmd.scan->fields[field_count].in_check_mask = NULL;
 720                                 (*last_cmd)->cmd.scan->fields[field_count].in_handler = NULL;
 721                                 (*last_cmd)->cmd.scan->fields[field_count++].in_handler_priv = NULL;
 722                         }
 723                 } else
 724                 {
 725 #ifdef _DEBUG_JTAG_IO_
 726                         /* if a device isn't listed, the BYPASS register should be selected */
 727                         if (!jtag_get_device(i)->bypass)
 728                         {
 729                                 ERROR("BUG: no scan data for a device not in BYPASS");
 730                                 exit(-1);
 731                         }
 732 #endif
 733                         /* program the scan field to 1 bit length, and ignore it's value */
 734                         (*last_cmd)->cmd.scan->fields[field_count].num_bits = 1;
 735                         (*last_cmd)->cmd.scan->fields[field_count].out_value = NULL;
 736                         (*last_cmd)->cmd.scan->fields[field_count].out_mask = NULL;
 737                         (*last_cmd)->cmd.scan->fields[field_count].in_value = NULL;
 738                         (*last_cmd)->cmd.scan->fields[field_count].in_check_value = NULL;
 739                         (*last_cmd)->cmd.scan->fields[field_count].in_check_mask = NULL;
 740                         (*last_cmd)->cmd.scan->fields[field_count].in_handler = NULL;
 741                         (*last_cmd)->cmd.scan->fields[field_count++].in_handler_priv = NULL;
 742                 }
 743         }
 744 }
 745
 746
 747
 748
 749 int jtag_add_plain_dr_scan(int num_fields, scan_field_t *fields, enum tap_state state)
 750 {
 751         if (jtag_trst == 1)
 752         {
 753                 WARNING("JTAG command queued, while TRST is low (TAP in reset)");
 754                 return jtag_error=ERROR_JTAG_TRST_ASSERTED;
 755         }
 756
 757         if (state != -1)
 758                 cmd_queue_end_state = state;
 759
 760         if (cmd_queue_cur_state == TAP_TLR && cmd_queue_end_state != TAP_TLR)
 761                 jtag_call_event_callbacks(JTAG_TRST_RELEASED);
 762
 763         if (cmd_queue_end_state == TAP_TLR)
 764                 jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
 765
 766         cmd_queue_cur_state = cmd_queue_end_state;
 767
 768         return interface_jtag_add_plain_dr_scan(num_fields, fields, cmd_queue_end_state);
 769 }
 770
 771 int MINIDRIVER(interface_jtag_add_plain_dr_scan)(int num_fields, scan_field_t *fields, enum tap_state state)
 772 {
 773         int i;
 774         jtag_command_t **last_cmd = jtag_get_last_command_p();
 775
 776         /* allocate memory for a new list member */
 777         *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
 778         last_comand_pointer = &((*last_cmd)->next);
 779         (*last_cmd)->next = NULL;
 780         (*last_cmd)->type = JTAG_SCAN;
 781
 782         /* allocate memory for scan command */
 783         (*last_cmd)->cmd.scan = cmd_queue_alloc(sizeof(scan_command_t));
 784         (*last_cmd)->cmd.scan->ir_scan = 0;
 785         (*last_cmd)->cmd.scan->num_fields = num_fields;
 786         (*last_cmd)->cmd.scan->fields = cmd_queue_alloc(num_fields * sizeof(scan_field_t));
 787         (*last_cmd)->cmd.scan->end_state = state;
 788
 789         for (i = 0; i < num_fields; i++)
 790         {
 791                 int num_bits = fields[i].num_bits;
 792                 int num_bytes = CEIL(fields[i].num_bits, 8);
 793                 (*last_cmd)->cmd.scan->fields[i].device = fields[i].device;
 794                 (*last_cmd)->cmd.scan->fields[i].num_bits = num_bits;
 795                 (*last_cmd)->cmd.scan->fields[i].out_value = buf_cpy(fields[i].out_value, cmd_queue_alloc(num_bytes), num_bits);
 796                 (*last_cmd)->cmd.scan->fields[i].out_mask = buf_cpy(fields[i].out_mask, cmd_queue_alloc(num_bytes), num_bits);
 797                 (*last_cmd)->cmd.scan->fields[i].in_value = fields[i].in_value;
 798                 (*last_cmd)->cmd.scan->fields[i].in_check_value = fields[i].in_check_value;
 799                 (*last_cmd)->cmd.scan->fields[i].in_check_mask = fields[i].in_check_mask;
 800                 (*last_cmd)->cmd.scan->fields[i].in_handler = fields[i].in_handler;
 801                 (*last_cmd)->cmd.scan->fields[i].in_handler_priv = fields[i].in_handler_priv;
 802         }
 803
 804         return ERROR_OK;
 805 }
 806 int jtag_add_statemove(enum tap_state state)
 807 {
 808         if (jtag_trst == 1)
 809         {
 810                 WARNING("JTAG command queued, while TRST is low (TAP in reset)");
 811                 return jtag_error=ERROR_JTAG_TRST_ASSERTED;
 812         }
 813
 814         if (state != -1)
 815                 cmd_queue_end_state = state;
 816
 817         if (cmd_queue_cur_state == TAP_TLR && cmd_queue_end_state != TAP_TLR)
 818                 jtag_call_event_callbacks(JTAG_TRST_RELEASED);
 819
 820         if (cmd_queue_end_state == TAP_TLR)
 821                 jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
 822
 823         cmd_queue_cur_state = cmd_queue_end_state;
 824
 825         return interface_jtag_add_statemove(cmd_queue_end_state);
 826 }
 827
 828 int MINIDRIVER(interface_jtag_add_statemove)(enum tap_state state)
 829 {
 830         jtag_command_t **last_cmd = jtag_get_last_command_p();
 831
 832         /* allocate memory for a new list member */
 833         *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
 834         last_comand_pointer = &((*last_cmd)->next);
 835         (*last_cmd)->next = NULL;
 836         (*last_cmd)->type = JTAG_STATEMOVE;
 837
 838         (*last_cmd)->cmd.statemove = cmd_queue_alloc(sizeof(statemove_command_t));
 839         (*last_cmd)->cmd.statemove->end_state = state;
 840
 841
 842         return ERROR_OK;
 843 }
 844
 845 int jtag_add_pathmove(int num_states, enum tap_state *path)
 846 {
 847         if (jtag_trst == 1)
 848         {
 849                 WARNING("JTAG command queued, while TRST is low (TAP in reset)");
 850                 return jtag_error=ERROR_JTAG_TRST_ASSERTED;
 851         }
 852
 853         /* the last state has to be a stable state */
 854         if (tap_move_map[path[num_states - 1]] == -1)
 855         {
 856                 ERROR("TAP path doesn't finish in a stable state");
 857                 return jtag_error=ERROR_JTAG_NOT_IMPLEMENTED;
 858         }
 859
 860         if (cmd_queue_cur_state == TAP_TLR && cmd_queue_end_state != TAP_TLR)
 861                 jtag_call_event_callbacks(JTAG_TRST_RELEASED);
 862
 863         if (cmd_queue_end_state == TAP_TLR)
 864                 jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
 865
 866
 867         enum tap_state cur_state=cmd_queue_cur_state;
 868         int i;
 869         for (i=0; i<num_states; i++)
 870         {
 871                 if ((tap_transitions[cur_state].low != path[i])&&
 872                                 (tap_transitions[cur_state].high != path[i]))
 873                 {
 874                         ERROR("BUG: %s -> %s isn't a valid TAP transition", tap_state_strings[cur_state], tap_state_strings[path[i]]);
 875                         exit(-1);
 876                 }
 877                 cur_state = path[i];
 878         }
 879
 880         cmd_queue_cur_state = path[num_states - 1];
 881
 882         return interface_jtag_add_pathmove(num_states, path);
 883 }
 884
 885
 886 int MINIDRIVER(interface_jtag_add_pathmove)(int num_states, enum tap_state *path)
 887 {
 888         jtag_command_t **last_cmd = jtag_get_last_command_p();
 889         int i;
 890
 891         /* allocate memory for a new list member */
 892         *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
 893         last_comand_pointer = &((*last_cmd)->next);
 894         (*last_cmd)->next = NULL;
 895         (*last_cmd)->type = JTAG_PATHMOVE;
 896
 897         (*last_cmd)->cmd.pathmove = cmd_queue_alloc(sizeof(pathmove_command_t));
 898         (*last_cmd)->cmd.pathmove->num_states = num_states;
 899         (*last_cmd)->cmd.pathmove->path = cmd_queue_alloc(sizeof(enum tap_state) * num_states);
 900
 901         for (i = 0; i < num_states; i++)
 902                 (*last_cmd)->cmd.pathmove->path[i] = path[i];
 903
 904         return ERROR_OK;
 905 }
 906
 907 int MINIDRIVER(interface_jtag_add_runtest)(int num_cycles, enum tap_state state)
 908 {
 909         jtag_command_t **last_cmd = jtag_get_last_command_p();
 910
 911         /* allocate memory for a new list member */
 912         *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
 913         (*last_cmd)->next = NULL;
 914         last_comand_pointer = &((*last_cmd)->next);
 915         (*last_cmd)->type = JTAG_RUNTEST;
 916
 917         (*last_cmd)->cmd.runtest = cmd_queue_alloc(sizeof(runtest_command_t));
 918         (*last_cmd)->cmd.runtest->num_cycles = num_cycles;
 919         (*last_cmd)->cmd.runtest->end_state = state;
 920
 921         return ERROR_OK;
 922 }
 923
 924 int jtag_add_runtest(int num_cycles, enum tap_state state)
 925 {
 926         if (jtag_trst == 1)
 927         {
 928                 jtag_error=ERROR_JTAG_QUEUE_FAILED;
 929                 WARNING("JTAG command queued, while TRST is low (TAP in reset)");
 930                 return ERROR_JTAG_TRST_ASSERTED;
 931         }
 932
 933         if (state != -1)
 934                 cmd_queue_end_state = state;
 935
 936         if (cmd_queue_cur_state == TAP_TLR && cmd_queue_end_state != TAP_TLR)
 937                 jtag_call_event_callbacks(JTAG_TRST_RELEASED);
 938
 939         if (cmd_queue_end_state == TAP_TLR)
 940                 jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
 941
 942         cmd_queue_cur_state = cmd_queue_end_state;
 943
 944         /* executed by sw or hw fifo */
 945         return interface_jtag_add_runtest(num_cycles, cmd_queue_end_state);
 946 }
 947
 948 int jtag_add_reset(int req_trst, int req_srst)
 949 {
 950         int trst_with_tms = 0;
 951         int retval;
 952
 953         if (req_trst == -1)
 954                 req_trst = jtag_trst;
 955
 956         if (req_srst == -1)
 957                 req_srst = jtag_srst;
 958
 959         /* Make sure that jtag_reset_config allows the requested reset */
 960         /* if SRST pulls TRST, we can't fulfill srst == 1 with trst == 0 */
 961         if (((jtag_reset_config & RESET_SRST_PULLS_TRST) && (req_srst == 1)) && (req_trst == 0))
 962         {
 963                 return jtag_error=ERROR_JTAG_RESET_WOULD_ASSERT_TRST;
 964         }
 965
 966         /* if TRST pulls SRST, we reset with TAP T-L-R */
 967         if (((jtag_reset_config & RESET_TRST_PULLS_SRST) && (req_trst == 1)) && (req_srst == 0))
 968         {
 969                 req_trst = 0;
 970                 trst_with_tms = 1;
 971         }
 972
 973         if (req_srst && !(jtag_reset_config & RESET_HAS_SRST))
 974         {
 975                 ERROR("requested nSRST assertion, but the current configuration doesn't support this");
 976                 return jtag_error=ERROR_JTAG_RESET_CANT_SRST;
 977         }
 978
 979         if (req_trst && !(jtag_reset_config & RESET_HAS_TRST))
 980         {
 981                 req_trst = 0;
 982                 trst_with_tms = 1;
 983         }
 984
 985         jtag_trst = req_trst;
 986         jtag_srst = req_srst;
 987
 988         retval = interface_jtag_add_reset(req_trst, req_srst);
 989         if (retval!=ERROR_OK)
 990         {
 991                 jtag_error=retval;
 992                 return retval;
 993         }
 994
 995         if (jtag_srst)
 996         {
 997                 jtag_call_event_callbacks(JTAG_SRST_ASSERTED);
 998         }
 999         else
1000         {
1001                 jtag_call_event_callbacks(JTAG_SRST_RELEASED);
1002                 if (jtag_nsrst_delay)
1003                         jtag_add_sleep(jtag_nsrst_delay * 1000);
1004         }
1005
1006         if (trst_with_tms)
1007         {
1008                 jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
1009                 jtag_add_end_state(TAP_TLR);
1010                 jtag_add_statemove(TAP_TLR);
1011
1012                 return ERROR_OK;
1013         }
1014
1015         if (jtag_trst)
1016         {
1017                 /* we just asserted nTRST, so we're now in Test-Logic-Reset,
1018                  * and inform possible listeners about this
1019                  */
1020                 cmd_queue_cur_state = TAP_TLR;
1021                 jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
1022         }
1023         else
1024         {
1025                 /* the nTRST line got deasserted, so we're still in Test-Logic-Reset,
1026                  * but we might want to add a delay to give the TAP time to settle
1027                  */
1028                 if (jtag_ntrst_delay)
1029                         jtag_add_sleep(jtag_ntrst_delay * 1000);
1030         }
1031
1032         return retval;
1033
1034 }
1035
1036 int MINIDRIVER(interface_jtag_add_reset)(int req_trst, int req_srst)
1037 {
1038         jtag_command_t **last_cmd = jtag_get_last_command_p();
1039
1040         /* allocate memory for a new list member */
1041         *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
1042         (*last_cmd)->next = NULL;
1043         last_comand_pointer = &((*last_cmd)->next);
1044         (*last_cmd)->type = JTAG_RESET;
1045
1046         (*last_cmd)->cmd.reset = cmd_queue_alloc(sizeof(reset_command_t));
1047         (*last_cmd)->cmd.reset->trst = req_trst;
1048         (*last_cmd)->cmd.reset->srst = req_srst;
1049
1050
1051         return ERROR_OK;
1052 }
1053
1054 int MINIDRIVER(interface_jtag_add_end_state)(enum tap_state state)
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_END_STATE;
1063
1064         (*last_cmd)->cmd.end_state = cmd_queue_alloc(sizeof(end_state_command_t));
1065         (*last_cmd)->cmd.end_state->end_state = state;
1066
1067         return ERROR_OK;
1068 }
1069
1070 int jtag_add_end_state(enum tap_state state)
1071 {
1072         if (state != -1)
1073                 cmd_queue_end_state = state;
1074         int retval = interface_jtag_add_end_state(cmd_queue_end_state);
1075         return retval;
1076 }
1077
1078 int MINIDRIVER(interface_jtag_add_sleep)(u32 us)
1079 {
1080         jtag_command_t **last_cmd = jtag_get_last_command_p();
1081
1082         /* allocate memory for a new list member */
1083         *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
1084         (*last_cmd)->next = NULL;
1085         last_comand_pointer = &((*last_cmd)->next);
1086         (*last_cmd)->type = JTAG_SLEEP;
1087
1088         (*last_cmd)->cmd.sleep = cmd_queue_alloc(sizeof(sleep_command_t));
1089         (*last_cmd)->cmd.sleep->us = us;
1090
1091         return ERROR_OK;
1092 }
1093
1094 int jtag_add_sleep(u32 us)
1095 {
1096         return interface_jtag_add_sleep(us);
1097 }
1098
1099 int jtag_scan_size(scan_command_t *cmd)
1100 {
1101         int bit_count = 0;
1102         int i;
1103
1104         /* count bits in scan command */
1105         for (i = 0; i < cmd->num_fields; i++)
1106         {
1107                 bit_count += cmd->fields[i].num_bits;
1108         }
1109
1110         return bit_count;
1111 }
1112
1113 int jtag_build_buffer(scan_command_t *cmd, u8 **buffer)
1114 {
1115         int bit_count = 0;
1116         int i;
1117
1118         bit_count = jtag_scan_size(cmd);
1119         *buffer = malloc(CEIL(bit_count, 8));
1120
1121         bit_count = 0;
1122
1123         for (i = 0; i < cmd->num_fields; i++)
1124         {
1125                 if (cmd->fields[i].out_value)
1126                 {
1127 #ifdef _DEBUG_JTAG_IO_
1128                         char* char_buf = buf_to_str(cmd->fields[i].out_value, (cmd->fields[i].num_bits > 64) ? 64 : cmd->fields[i].num_bits, 16);
1129 #endif
1130                         buf_set_buf(cmd->fields[i].out_value, 0, *buffer, bit_count, cmd->fields[i].num_bits);
1131 #ifdef _DEBUG_JTAG_IO_
1132                         DEBUG("fields[%i].out_value: 0x%s", i, char_buf);
1133                         free(char_buf);
1134 #endif
1135                 }
1136
1137                 bit_count += cmd->fields[i].num_bits;
1138         }
1139
1140         return bit_count;
1141
1142 }
1143
1144 int jtag_read_buffer(u8 *buffer, scan_command_t *cmd)
1145 {
1146         int i;
1147         int bit_count = 0;
1148         int retval;
1149
1150         /* we return ERROR_OK, unless a check fails, or a handler reports a problem */
1151         retval = ERROR_OK;
1152
1153         for (i = 0; i < cmd->num_fields; i++)
1154         {
1155                 /* if neither in_value nor in_handler
1156                  * are specified we don't have to examine this field
1157                  */
1158                 if (cmd->fields[i].in_value || cmd->fields[i].in_handler)
1159                 {
1160                         int num_bits = cmd->fields[i].num_bits;
1161                         u8 *captured = buf_set_buf(buffer, bit_count, malloc(CEIL(num_bits, 8)), 0, num_bits);
1162
1163 #ifdef _DEBUG_JTAG_IO_
1164                         char *char_buf;
1165
1166                         char_buf = buf_to_str(captured, (num_bits > 64) ? 64 : num_bits, 16);
1167                         DEBUG("fields[%i].in_value: 0x%s", i, char_buf);
1168                         free(char_buf);
1169 #endif
1170
1171                         if (cmd->fields[i].in_value)
1172                         {
1173                                 buf_cpy(captured, cmd->fields[i].in_value, num_bits);
1174
1175                                 if (cmd->fields[i].in_handler)
1176                                 {
1177                                         if (cmd->fields[i].in_handler(cmd->fields[i].in_value, cmd->fields[i].in_handler_priv, cmd->fields+i) != ERROR_OK)
1178                                         {
1179                                                 WARNING("in_handler reported a failed check");
1180                                                 retval = ERROR_JTAG_QUEUE_FAILED;
1181                                         }
1182                                 }
1183                         }
1184
1185                         /* no in_value specified, but a handler takes care of the scanned data */
1186                         if (cmd->fields[i].in_handler && (!cmd->fields[i].in_value))
1187                         {
1188                                 if (cmd->fields[i].in_handler(captured, cmd->fields[i].in_handler_priv, cmd->fields+i) != ERROR_OK)
1189                                 {
1190                                         /* We're going to call the error:handler later, but if the in_handler
1191                                          * reported an error we report this failure upstream
1192                                          */
1193                                         WARNING("in_handler reported a failed check");
1194                                         retval = ERROR_JTAG_QUEUE_FAILED;
1195                                 }
1196                         }
1197
1198                         free(captured);
1199                 }
1200                 bit_count += cmd->fields[i].num_bits;
1201         }
1202
1203         return retval;
1204 }
1205
1206 int jtag_check_value(u8 *captured, void *priv, scan_field_t *field)
1207 {
1208         int retval = ERROR_OK;
1209         int num_bits = field->num_bits;
1210
1211         int compare_failed = 0;
1212
1213         if (field->in_check_mask)
1214                 compare_failed = buf_cmp_mask(captured, field->in_check_value, field->in_check_mask, num_bits);
1215         else
1216                 compare_failed = buf_cmp(captured, field->in_check_value, num_bits);
1217
1218         if (compare_failed)
1219                 {
1220                 /* An error handler could have caught the failing check
1221                  * only report a problem when there wasn't a handler, or if the handler
1222                  * acknowledged the error
1223                  */
1224                 if (compare_failed)
1225                 {
1226                         char *captured_char = buf_to_str(captured, (num_bits > 64) ? 64 : num_bits, 16);
1227                         char *in_check_value_char = buf_to_str(field->in_check_value, (num_bits > 64) ? 64 : num_bits, 16);
1228
1229                         if (field->in_check_mask)
1230                         {
1231                                 char *in_check_mask_char;
1232                                 in_check_mask_char = buf_to_str(field->in_check_mask, (num_bits > 64) ? 64 : num_bits, 16);
1233                                 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);
1234                                 free(in_check_mask_char);
1235                         }
1236                         else
1237                         {
1238                                 WARNING("value captured during scan didn't pass the requested check: captured: 0x%s check_value: 0x%s", captured_char, in_check_value_char);
1239                         }
1240
1241                         free(captured_char);
1242                         free(in_check_value_char);
1243
1244                         retval = ERROR_JTAG_QUEUE_FAILED;
1245                 }
1246
1247         }
1248         return retval;
1249 }
1250
1251 /*
1252   set up checking of this field using the in_handler. The values passed in must be valid until
1253   after jtag_execute() has completed.
1254  */
1255 void jtag_set_check_value(scan_field_t *field, u8 *value, u8 *mask, error_handler_t *in_error_handler)
1256 {
1257         if (value)
1258                 field->in_handler = jtag_check_value;
1259         else
1260                 field->in_handler = NULL;       /* No check, e.g. embeddedice uses value==NULL to indicate no check */
1261         field->in_handler_priv = NULL;  /* this will be filled in at the invocation site to point to the field duplicate */
1262         field->in_check_value = value;
1263         field->in_check_mask = mask;
1264 }
1265
1266 enum scan_type jtag_scan_type(scan_command_t *cmd)
1267 {
1268         int i;
1269         int type = 0;
1270
1271         for (i = 0; i < cmd->num_fields; i++)
1272         {
1273                 if (cmd->fields[i].in_value || cmd->fields[i].in_handler)
1274                         type |= SCAN_IN;
1275                 if (cmd->fields[i].out_value)
1276                         type |= SCAN_OUT;
1277         }
1278
1279         return type;
1280 }
1281
1282 int MINIDRIVER(interface_jtag_execute_queue)(void)
1283 {
1284         int retval;
1285
1286         retval = jtag->execute_queue();
1287
1288         cmd_queue_free();
1289
1290         jtag_command_queue = NULL;
1291         last_comand_pointer = &jtag_command_queue;
1292
1293         return retval;
1294 }
1295
1296 int jtag_execute_queue(void)
1297 {
1298         int retval=interface_jtag_execute_queue();
1299         if (retval==ERROR_OK)
1300         {
1301         retval=jtag_error;
1302         }
1303         jtag_error=ERROR_OK;
1304         return retval;
1305 }
1306
1307 int jtag_reset_callback(enum jtag_event event, void *priv)
1308 {
1309         jtag_device_t *device = priv;
1310
1311         DEBUG("-");
1312
1313         if (event == JTAG_TRST_ASSERTED)
1314         {
1315                 buf_set_ones(device->cur_instr, device->ir_length);
1316                 device->bypass = 1;
1317         }
1318
1319         return ERROR_OK;
1320 }
1321
1322 void jtag_sleep(u32 us)
1323 {
1324         usleep(us);
1325 }
1326
1327 /* Try to examine chain layout according to IEEE 1149.1 §12
1328  */
1329 int jtag_examine_chain()
1330 {
1331         jtag_device_t *device = jtag_devices;
1332         scan_field_t field;
1333         u8 idcode_buffer[JTAG_MAX_CHAIN_SIZE * 4];
1334         int i;
1335         int bit_count;
1336         int device_count = 0;
1337         u8 zero_check = 0x0;
1338         u8 one_check = 0xff;
1339
1340         field.device = 0;
1341         field.num_bits = sizeof(idcode_buffer) * 8;
1342         field.out_value = idcode_buffer;
1343         field.out_mask = NULL;
1344         field.in_value = idcode_buffer;
1345         field.in_check_value = NULL;
1346         field.in_check_mask = NULL;
1347         field.in_handler = NULL;
1348         field.in_handler_priv = NULL;
1349
1350         for (i = 0; i < JTAG_MAX_CHAIN_SIZE; i++)
1351         {
1352                 buf_set_u32(idcode_buffer, i * 32, 32, 0x000000FF);
1353         }
1354
1355         jtag_add_plain_dr_scan(1, &field, TAP_TLR);
1356         jtag_execute_queue();
1357
1358         for (i = 0; i < JTAG_MAX_CHAIN_SIZE * 4; i++)
1359         {
1360                 zero_check |= idcode_buffer[i];
1361                 one_check &= idcode_buffer[i];
1362         }
1363
1364         /* if there wasn't a single non-zero bit or if all bits were one, the scan isn't valid */
1365         if ((zero_check == 0x00) || (one_check == 0xff))
1366         {
1367                 ERROR("JTAG communication failure, check connection, JTAG interface, target power etc.");
1368                 return ERROR_JTAG_INIT_FAILED;
1369         }
1370
1371         for (bit_count = 0; bit_count < (JTAG_MAX_CHAIN_SIZE * 32) - 31;)
1372         {
1373                 u32 idcode = buf_get_u32(idcode_buffer, bit_count, 32);
1374                 if ((idcode & 1) == 0)
1375                 {
1376                         /* LSB must not be 0, this indicates a device in bypass */
1377                         device_count++;
1378
1379                         bit_count += 1;
1380                 }
1381                 else
1382                 {
1383                         u32 manufacturer;
1384                         u32 part;
1385                         u32 version;
1386
1387                         if (idcode == 0x000000FF)
1388                         {
1389                                 /* End of chain (invalid manufacturer ID) */
1390                                 break;
1391                         }
1392
1393                         if (device)
1394                         {
1395                                 device->idcode = idcode;
1396                                 device = device->next;
1397                         }
1398                         device_count++;
1399
1400                         manufacturer = (idcode & 0xffe) >> 1;
1401                         part = (idcode & 0xffff000) >> 12;
1402                         version = (idcode & 0xf0000000) >> 28;
1403
1404                         INFO("JTAG device found: 0x%8.8x (Manufacturer: 0x%3.3x, Part: 0x%4.4x, Version: 0x%1.1x)",
1405                                 idcode, manufacturer, part, version);
1406
1407                         bit_count += 32;
1408                 }
1409         }
1410
1411         /* see if number of discovered devices matches configuration */
1412         if (device_count != jtag_num_devices)
1413         {
1414                 ERROR("number of discovered devices in JTAG chain (%i) doesn't match configuration (%i)",
1415                         device_count, jtag_num_devices);
1416                 ERROR("check the config file and ensure proper JTAG communication (connections, speed, ...)");
1417                 return ERROR_JTAG_INIT_FAILED;
1418         }
1419
1420         return ERROR_OK;
1421 }
1422
1423 int jtag_validate_chain()
1424 {
1425         jtag_device_t *device = jtag_devices;
1426         int total_ir_length = 0;
1427         u8 *ir_test = NULL;
1428         scan_field_t field;
1429         int chain_pos = 0;
1430
1431         while (device)
1432         {
1433                 total_ir_length += device->ir_length;
1434                 device = device->next;
1435         }
1436
1437         total_ir_length += 2;
1438         ir_test = malloc(CEIL(total_ir_length, 8));
1439         buf_set_ones(ir_test, total_ir_length);
1440
1441         field.device = 0;
1442         field.num_bits = total_ir_length;
1443         field.out_value = ir_test;
1444         field.out_mask = NULL;
1445         field.in_value = ir_test;
1446         field.in_check_value = NULL;
1447         field.in_check_mask = NULL;
1448         field.in_handler = NULL;
1449         field.in_handler_priv = NULL;
1450
1451         jtag_add_plain_ir_scan(1, &field, TAP_TLR);
1452         jtag_execute_queue();
1453
1454         device = jtag_devices;
1455         while (device)
1456         {
1457                 if (buf_get_u32(ir_test, chain_pos, 2) != 0x1)
1458                 {
1459                         char *cbuf = buf_to_str(ir_test, total_ir_length, 16);
1460                         ERROR("Error validating JTAG scan chain, IR mismatch, scan returned 0x%s", cbuf);
1461                         free(cbuf);
1462                         free(ir_test);
1463                         return ERROR_JTAG_INIT_FAILED;
1464                 }
1465                 chain_pos += device->ir_length;
1466                 device = device->next;
1467         }
1468
1469         if (buf_get_u32(ir_test, chain_pos, 2) != 0x3)
1470         {
1471                 char *cbuf = buf_to_str(ir_test, total_ir_length, 16);
1472                 ERROR("Error validating JTAG scan chain, IR mismatch, scan returned 0x%s", cbuf);
1473                 free(cbuf);
1474                 free(ir_test);
1475                 return ERROR_JTAG_INIT_FAILED;
1476         }
1477
1478         free(ir_test);
1479
1480         return ERROR_OK;
1481 }
1482
1483 int jtag_register_commands(struct command_context_s *cmd_ctx)
1484 {
1485         register_command(cmd_ctx, NULL, "interface", handle_interface_command,
1486                 COMMAND_CONFIG, NULL);
1487         register_command(cmd_ctx, NULL, "jtag_speed", handle_jtag_speed_command,
1488                 COMMAND_ANY, "set jtag speed (if supported) <speed>");
1489         register_command(cmd_ctx, NULL, "jtag_device", handle_jtag_device_command,
1490                 COMMAND_CONFIG, "jtag_device <ir_length> <ir_expected> <ir_mask>");
1491         register_command(cmd_ctx, NULL, "reset_config", handle_reset_config_command,
1492                 COMMAND_CONFIG, NULL);
1493         register_command(cmd_ctx, NULL, "jtag_nsrst_delay", handle_jtag_nsrst_delay_command,
1494                 COMMAND_CONFIG, NULL);
1495         register_command(cmd_ctx, NULL, "jtag_ntrst_delay", handle_jtag_ntrst_delay_command,
1496                 COMMAND_CONFIG, NULL);
1497
1498         register_command(cmd_ctx, NULL, "scan_chain", handle_scan_chain_command,
1499                 COMMAND_EXEC, "print current scan chain configuration");
1500
1501         register_command(cmd_ctx, NULL, "endstate", handle_endstate_command,
1502                 COMMAND_EXEC, "finish JTAG operations in <tap_state>");
1503         register_command(cmd_ctx, NULL, "jtag_reset", handle_jtag_reset_command,
1504                 COMMAND_EXEC, "toggle reset lines <trst> <srst>");
1505         register_command(cmd_ctx, NULL, "runtest", handle_runtest_command,
1506                 COMMAND_EXEC, "move to Run-Test/Idle, and execute <num_cycles>");
1507         register_command(cmd_ctx, NULL, "statemove", handle_statemove_command,
1508                 COMMAND_EXEC, "move to current endstate or [tap_state]");
1509         register_command(cmd_ctx, NULL, "irscan", handle_irscan_command,
1510                 COMMAND_EXEC, "execute IR scan <device> <instr> [dev2] [instr2] ...");
1511         register_command(cmd_ctx, NULL, "drscan", handle_drscan_command,
1512                 COMMAND_EXEC, "execute DR scan <device> <var> [dev2] [var2] ...");
1513
1514         register_command(cmd_ctx, NULL, "verify_ircapture", handle_verify_ircapture_command,
1515                 COMMAND_ANY, "verify value captured during Capture-IR <enable|disable>");
1516         return ERROR_OK;
1517 }
1518
1519 int jtag_interface_init(struct command_context_s *cmd_ctx)
1520 {
1521         if (!jtag_interface)
1522         {
1523                 /* nothing was previously specified by "interface" command */
1524                 ERROR("JTAG interface has to be specified, see \"interface\" command");
1525                 return ERROR_JTAG_INVALID_INTERFACE;
1526         }
1527
1528         if (jtag_interface->init() != ERROR_OK)
1529                 return ERROR_JTAG_INIT_FAILED;
1530
1531         jtag = jtag_interface;
1532         return ERROR_OK;
1533 }
1534
1535 int jtag_init(struct command_context_s *cmd_ctx)
1536 {
1537         int validate_tries = 0;
1538         jtag_device_t *device;
1539
1540         DEBUG("-");
1541
1542         if (!jtag && jtag_interface_init(cmd_ctx) != ERROR_OK)
1543                 return ERROR_JTAG_INIT_FAILED;
1544
1545         device = jtag_devices;
1546         jtag_ir_scan_size = 0;
1547         jtag_num_devices = 0;
1548         while (device != NULL)
1549         {
1550                 jtag_ir_scan_size += device->ir_length;
1551                 jtag_num_devices++;
1552                 device = device->next;
1553         }
1554
1555         jtag_add_statemove(TAP_TLR);
1556         jtag_execute_queue();
1557
1558         /* examine chain first, as this could discover the real chain layout */
1559         if (jtag_examine_chain() != ERROR_OK)
1560         {
1561                 ERROR("trying to validate configured JTAG chain anyway...");
1562         }
1563
1564         while (jtag_validate_chain() != ERROR_OK)
1565         {
1566                 validate_tries++;
1567                 if (validate_tries > 5)
1568                 {
1569                         ERROR("Could not validate JTAG chain, exit");
1570                         return ERROR_JTAG_INVALID_INTERFACE;
1571                 }
1572                 usleep(10000);
1573         }
1574
1575         return ERROR_OK;
1576 }
1577
1578 int handle_interface_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1579 {
1580         int i;
1581
1582         /* check whether the interface is already configured */
1583         if (jtag_interface)
1584         {
1585                 WARNING("Interface already configured, ignoring");
1586                 return ERROR_OK;
1587         }
1588
1589         /* interface name is a mandatory argument */
1590         if (argc < 1 || args[0][0] == '\0')
1591         {
1592                 return ERROR_COMMAND_SYNTAX_ERROR;
1593         }
1594
1595         for (i=0; jtag_interfaces[i]; i++)
1596         {
1597                 if (strcmp(args[0], jtag_interfaces[i]->name) == 0)
1598                 {
1599                         if (jtag_interfaces[i]->register_commands(cmd_ctx) != ERROR_OK)
1600                                 exit(-1);
1601
1602                         jtag_interface = jtag_interfaces[i];
1603                         return ERROR_OK;
1604                 }
1605         }
1606
1607         /* no valid interface was found (i.e. the configuration option,
1608          * didn't match one of the compiled-in interfaces
1609          */
1610         ERROR("No valid jtag interface found (%s)", args[0]);
1611         ERROR("compiled-in jtag interfaces:");
1612         for (i = 0; jtag_interfaces[i]; i++)
1613         {
1614                 ERROR("%i: %s", i, jtag_interfaces[i]->name);
1615         }
1616
1617         return ERROR_JTAG_INVALID_INTERFACE;
1618 }
1619
1620 int handle_jtag_device_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1621 {
1622         jtag_device_t **last_device_p = &jtag_devices;
1623
1624         if (*last_device_p)
1625         {
1626                 while ((*last_device_p)->next)
1627                         last_device_p = &((*last_device_p)->next);
1628                 last_device_p = &((*last_device_p)->next);
1629         }
1630
1631         if (argc < 3)
1632                 return ERROR_OK;
1633
1634         *last_device_p = malloc(sizeof(jtag_device_t));
1635         (*last_device_p)->ir_length = strtoul(args[0], NULL, 0);
1636
1637         (*last_device_p)->expected = malloc((*last_device_p)->ir_length);
1638         buf_set_u32((*last_device_p)->expected, 0, (*last_device_p)->ir_length, strtoul(args[1], NULL, 0));
1639         (*last_device_p)->expected_mask = malloc((*last_device_p)->ir_length);
1640         buf_set_u32((*last_device_p)->expected_mask, 0, (*last_device_p)->ir_length, strtoul(args[2], NULL, 0));
1641
1642         (*last_device_p)->cur_instr = malloc((*last_device_p)->ir_length);
1643         (*last_device_p)->bypass = 1;
1644         buf_set_ones((*last_device_p)->cur_instr, (*last_device_p)->ir_length);
1645
1646         (*last_device_p)->next = NULL;
1647
1648         jtag_register_event_callback(jtag_reset_callback, (*last_device_p));
1649
1650         jtag_num_devices++;
1651
1652         return ERROR_OK;
1653 }
1654
1655 int handle_scan_chain_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1656 {
1657         jtag_device_t *device = jtag_devices;
1658         int device_count = 0;
1659
1660         while (device)
1661         {
1662                 u32 expected, expected_mask, cur_instr;
1663                 expected = buf_get_u32(device->expected, 0, device->ir_length);
1664                 expected_mask = buf_get_u32(device->expected_mask, 0, device->ir_length);
1665                 cur_instr = buf_get_u32(device->cur_instr, 0, device->ir_length);
1666                 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);
1667                 device = device->next;
1668                 device_count++;
1669         }
1670
1671         return ERROR_OK;
1672 }
1673
1674 int handle_reset_config_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1675 {
1676         if (argc >= 1)
1677         {
1678                 if (strcmp(args[0], "none") == 0)
1679                         jtag_reset_config = RESET_NONE;
1680                 else if (strcmp(args[0], "trst_only") == 0)
1681                         jtag_reset_config = RESET_HAS_TRST;
1682                 else if (strcmp(args[0], "srst_only") == 0)
1683                         jtag_reset_config = RESET_HAS_SRST;
1684                 else if (strcmp(args[0], "trst_and_srst") == 0)
1685                         jtag_reset_config = RESET_TRST_AND_SRST;
1686                 else
1687                 {
1688                         ERROR("invalid reset_config argument, defaulting to none");
1689                         jtag_reset_config = RESET_NONE;
1690                         return ERROR_INVALID_ARGUMENTS;
1691                 }
1692         }
1693
1694         if (argc >= 2)
1695         {
1696                 if (strcmp(args[1], "srst_pulls_trst") == 0)
1697                         jtag_reset_config |= RESET_SRST_PULLS_TRST;
1698                 else if (strcmp(args[1], "trst_pulls_srst") == 0)
1699                         jtag_reset_config |= RESET_TRST_PULLS_SRST;
1700                 else if (strcmp(args[1], "combined") == 0)
1701                         jtag_reset_config |= RESET_SRST_PULLS_TRST | RESET_TRST_PULLS_SRST;
1702                 else if (strcmp(args[1], "separate") == 0)
1703                         jtag_reset_config &= ~(RESET_SRST_PULLS_TRST | RESET_TRST_PULLS_SRST);
1704                 else
1705                 {
1706                         ERROR("invalid reset_config argument, defaulting to none");
1707                         jtag_reset_config = RESET_NONE;
1708                         return ERROR_INVALID_ARGUMENTS;
1709                 }
1710         }
1711
1712         if (argc >= 3)
1713         {
1714                 if (strcmp(args[2], "trst_open_drain") == 0)
1715                         jtag_reset_config |= RESET_TRST_OPEN_DRAIN;
1716                 else if (strcmp(args[2], "trst_push_pull") == 0)
1717                         jtag_reset_config &= ~RESET_TRST_OPEN_DRAIN;
1718                 else
1719                 {
1720                         ERROR("invalid reset_config argument, defaulting to none");
1721                         jtag_reset_config = RESET_NONE;
1722                         return ERROR_INVALID_ARGUMENTS;
1723                 }
1724         }
1725
1726         if (argc >= 4)
1727         {
1728                 if (strcmp(args[3], "srst_push_pull") == 0)
1729                         jtag_reset_config |= RESET_SRST_PUSH_PULL;
1730                 else if (strcmp(args[3], "srst_open_drain") == 0)
1731                         jtag_reset_config &= ~RESET_SRST_PUSH_PULL;
1732                 else
1733                 {
1734                         ERROR("invalid reset_config argument, defaulting to none");
1735                         jtag_reset_config = RESET_NONE;
1736                         return ERROR_INVALID_ARGUMENTS;
1737                 }
1738         }
1739
1740         return ERROR_OK;
1741 }
1742
1743 int handle_jtag_nsrst_delay_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1744 {
1745         if (argc < 1)
1746         {
1747                 ERROR("jtag_nsrst_delay <ms> command takes one required argument");
1748                 exit(-1);
1749         }
1750         else
1751         {
1752                 jtag_nsrst_delay = strtoul(args[0], NULL, 0);
1753         }
1754
1755         return ERROR_OK;
1756 }
1757
1758 int handle_jtag_ntrst_delay_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1759 {
1760         if (argc < 1)
1761         {
1762                 ERROR("jtag_ntrst_delay <ms> command takes one required argument");
1763                 exit(-1);
1764         }
1765         else
1766         {
1767                 jtag_ntrst_delay = strtoul(args[0], NULL, 0);
1768         }
1769
1770         return ERROR_OK;
1771 }
1772
1773 int handle_jtag_speed_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1774 {
1775         if (argc == 0)
1776                 command_print(cmd_ctx, "jtag_speed: %i", jtag_speed);
1777
1778         if (argc > 0)
1779         {
1780                 /* this command can be called during CONFIG,
1781                  * in which case jtag isn't initialized */
1782                 if (jtag)
1783                         jtag->speed(strtoul(args[0], NULL, 0));
1784                 else
1785                         jtag_speed = strtoul(args[0], NULL, 0);
1786         }
1787
1788         return ERROR_OK;
1789 }
1790
1791 int handle_endstate_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1792 {
1793         enum tap_state state;
1794
1795         if (argc < 1)
1796         {
1797                 return ERROR_COMMAND_SYNTAX_ERROR;
1798         }
1799         else
1800         {
1801                 for (state = 0; state < 16; state++)
1802                 {
1803                         if (strcmp(args[0], tap_state_strings[state]) == 0)
1804                         {
1805                                 jtag_add_end_state(state);
1806                                 jtag_execute_queue();
1807                         }
1808                 }
1809         }
1810         command_print(cmd_ctx, "current endstate: %s", tap_state_strings[end_state]);
1811
1812         return ERROR_OK;
1813 }
1814
1815 int handle_jtag_reset_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1816 {
1817         int trst = -1;
1818         int srst = -1;
1819         int retval;
1820
1821         if (argc < 2)
1822         {
1823                 return ERROR_COMMAND_SYNTAX_ERROR;
1824
1825         }
1826
1827         if (args[0][0] == '1')
1828                 trst = 1;
1829         else if (args[0][0] == '0')
1830                 trst = 0;
1831         else
1832         {
1833                 return ERROR_COMMAND_SYNTAX_ERROR;
1834         }
1835
1836         if (args[1][0] == '1')
1837                 srst = 1;
1838         else if (args[1][0] == '0')
1839                 srst = 0;
1840         else
1841         {
1842                 return ERROR_COMMAND_SYNTAX_ERROR;
1843         }
1844
1845         if (!jtag && jtag_interface_init(cmd_ctx) != ERROR_OK)
1846                 return ERROR_JTAG_INIT_FAILED;
1847
1848         if ((retval = jtag_add_reset(trst, srst)) != ERROR_OK)
1849         {
1850                 switch (retval)
1851                 {
1852                         case ERROR_JTAG_RESET_WOULD_ASSERT_TRST:
1853                                 command_print(cmd_ctx, "requested reset would assert trst\nif this is acceptable, use jtag_reset 1 %c", args[1][0]);
1854                                 break;
1855                         case ERROR_JTAG_RESET_CANT_SRST:
1856                                 command_print(cmd_ctx, "can't assert srst because the current reset_config doesn't support it");
1857                                 break;
1858                         default:
1859                                 command_print(cmd_ctx, "unknown error");
1860                 }
1861         }
1862         jtag_execute_queue();
1863
1864         return ERROR_OK;
1865 }
1866
1867 int handle_runtest_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1868 {
1869         if (argc < 1)
1870         {
1871                 return ERROR_COMMAND_SYNTAX_ERROR;
1872         }
1873
1874         jtag_add_runtest(strtol(args[0], NULL, 0), -1);
1875         jtag_execute_queue();
1876
1877         return ERROR_OK;
1878
1879 }
1880
1881 int handle_statemove_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1882 {
1883         enum tap_state state;
1884
1885         state = -1;
1886         if (argc == 1)
1887         {
1888                 for (state = 0; state < 16; state++)
1889                 {
1890                         if (strcmp(args[0], tap_state_strings[state]) == 0)
1891                         {
1892                                 break;
1893                         }
1894                 }
1895         }
1896
1897         jtag_add_statemove(state);
1898         jtag_execute_queue();
1899
1900         return ERROR_OK;
1901
1902 }
1903
1904 int handle_irscan_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1905 {
1906         int i;
1907         scan_field_t *fields;
1908
1909         if ((argc < 2) || (argc % 2))
1910         {
1911                 return ERROR_COMMAND_SYNTAX_ERROR;
1912         }
1913
1914         fields = malloc(sizeof(scan_field_t) * argc / 2);
1915
1916         for (i = 0; i < argc / 2; i++)
1917         {
1918                 int device = strtoul(args[i*2], NULL, 0);
1919                 int field_size = jtag_get_device(device)->ir_length;
1920                 fields[i].device = device;
1921                 fields[i].out_value = malloc(CEIL(field_size, 8));
1922                 buf_set_u32(fields[i].out_value, 0, field_size, strtoul(args[i*2+1], NULL, 0));
1923                 fields[i].out_mask = NULL;
1924                 fields[i].in_value = NULL;
1925                 fields[i].in_check_mask = NULL;
1926                 fields[i].in_handler = NULL;
1927                 fields[i].in_handler_priv = NULL;
1928         }
1929
1930         jtag_add_ir_scan(argc / 2, fields, -1);
1931         jtag_execute_queue();
1932
1933         for (i = 0; i < argc / 2; i++)
1934                 free(fields[i].out_value);
1935
1936         free (fields);
1937
1938         return ERROR_OK;
1939 }
1940
1941 int handle_drscan_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1942 {
1943         scan_field_t *fields;
1944         int num_fields = 0;
1945         int field_count = 0;
1946         var_t *var;
1947         int i, j;
1948
1949         if ((argc < 2) || (argc % 2))
1950         {
1951                 return ERROR_COMMAND_SYNTAX_ERROR;
1952         }
1953
1954         for (i = 0; i < argc; i+=2)
1955         {
1956                 var = get_var_by_namenum(args[i+1]);
1957                 if (var)
1958                 {
1959                         num_fields += var->num_fields;
1960                 }
1961                 else
1962                 {
1963                         command_print(cmd_ctx, "variable %s doesn't exist", args[i+1]);
1964                         return ERROR_OK;
1965                 }
1966         }
1967
1968         fields = malloc(sizeof(scan_field_t) * num_fields);
1969
1970         for (i = 0; i < argc; i+=2)
1971         {
1972                 var = get_var_by_namenum(args[i+1]);
1973
1974                 for (j = 0; j < var->num_fields; j++)
1975                 {
1976                         fields[field_count].device = strtol(args[i], NULL, 0);
1977                         fields[field_count].num_bits = var->fields[j].num_bits;
1978                         fields[field_count].out_value = malloc(CEIL(var->fields[j].num_bits, 8));
1979                         buf_set_u32(fields[field_count].out_value, 0, var->fields[j].num_bits, var->fields[j].value);
1980                         fields[field_count].out_mask = NULL;
1981                         fields[field_count].in_value = fields[field_count].out_value;
1982                         fields[field_count].in_check_mask = NULL;
1983                         fields[field_count].in_check_value = NULL;
1984                         fields[field_count].in_handler = field_le_to_host;
1985                         fields[field_count++].in_handler_priv = &(var->fields[j]);
1986                 }
1987         }
1988
1989         jtag_add_dr_scan(num_fields, fields, -1);
1990         jtag_execute_queue();
1991
1992         for (i = 0; i < argc / 2; i++)
1993                 free(fields[i].out_value);
1994
1995         free(fields);
1996
1997         return ERROR_OK;
1998 }
1999
2000 int handle_verify_ircapture_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2001 {
2002         if (argc == 1)
2003         {
2004                 if (strcmp(args[0], "enable") == 0)
2005                 {
2006                         jtag_verify_capture_ir = 1;
2007                 }
2008                 else if (strcmp(args[0], "disable") == 0)
2009                 {
2010                         jtag_verify_capture_ir = 0;
2011                 } else
2012                 {
2013                         return ERROR_COMMAND_SYNTAX_ERROR;
2014                 }
2015         } else if (argc != 0)
2016         {
2017                 return ERROR_COMMAND_SYNTAX_ERROR;
2018         }
2019
2020         command_print(cmd_ctx, "verify Capture-IR is %s", (jtag_verify_capture_ir) ? "enabled": "disabled");
2021
2022         return ERROR_OK;
2023 }