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   1 /***************************************************************************
   2  *   Copyright (C) 2005 by Dominic Rath                                    *
   3  *   Dominic.Rath@gmx.de                                                   *
   4  *                                                                         *
   5  *   This program is free software; you can redistribute it and/or modify  *
   6  *   it under the terms of the GNU General Public License as published by  *
   7  *   the Free Software Foundation; either version 2 of the License, or     *
   8  *   (at your option) any later version.                                   *
   9  *                                                                         *
  10  *   This program is distributed in the hope that it will be useful,       *
  11  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  12  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  13  *   GNU General Public License for more details.                          *
  14  *                                                                         *
  15  *   You should have received a copy of the GNU General Public License     *
  16  *   along with this program; if not, write to the                         *
  17  *   Free Software Foundation, Inc.,                                       *
  18  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
  19  ***************************************************************************/
  20 #ifdef HAVE_CONFIG_H
  21 #include "config.h"
  22 #endif
  23
  24 #include "replacements.h"
  25
  26 #include "jtag.h"
  27
  28 #include "command.h"
  29 #include "log.h"
  30 #include "interpreter.h"
  31
  32 #include "stdlib.h"
  33 #include "string.h"
  34 #include <unistd.h>
  35
  36
  37
  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                         /* if a device isn't listed, the BYPASS register should be selected */
 629                         if (!jtag_get_device(i)->bypass)
 630                         {
 631                                 ERROR("BUG: no scan data for a device not in BYPASS");
 632                                 exit(-1);
 633                         }
 634
 635                         /* program the scan field to 1 bit length, and ignore it's value */
 636                         (*last_cmd)->cmd.scan->fields[field_count].num_bits = 1;
 637                         (*last_cmd)->cmd.scan->fields[field_count].out_value = NULL;
 638                         (*last_cmd)->cmd.scan->fields[field_count].out_mask = NULL;
 639                         (*last_cmd)->cmd.scan->fields[field_count].in_value = NULL;
 640                         (*last_cmd)->cmd.scan->fields[field_count].in_check_value = NULL;
 641                         (*last_cmd)->cmd.scan->fields[field_count].in_check_mask = NULL;
 642                         (*last_cmd)->cmd.scan->fields[field_count].in_handler = NULL;
 643                         (*last_cmd)->cmd.scan->fields[field_count++].in_handler_priv = NULL;
 644                 }
 645                 else
 646                 {
 647                         /* if a device is listed, the BYPASS register must not be selected */
 648                         if (jtag_get_device(i)->bypass)
 649                         {
 650                                 WARNING("scan data for a device in BYPASS");
 651                         }
 652                 }
 653         }
 654         return ERROR_OK;
 655 }
 656
 657 void MINIDRIVER(interface_jtag_add_dr_out)(int device_num,
 658                 int num_fields,
 659                 int *num_bits,
 660                 u32 *value,
 661                 enum tap_state end_state)
 662 {
 663         int i;
 664         int field_count = 0;
 665         int scan_size;
 666         int bypass_devices = 0;
 667
 668         jtag_command_t **last_cmd = jtag_get_last_command_p();
 669         jtag_device_t *device = jtag_devices;
 670         /* count devices in bypass */
 671         while (device)
 672         {
 673                 if (device->bypass)
 674                         bypass_devices++;
 675                 device = device->next;
 676         }
 677
 678         /* allocate memory for a new list member */
 679         *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
 680         last_comand_pointer = &((*last_cmd)->next);
 681         (*last_cmd)->next = NULL;
 682         (*last_cmd)->type = JTAG_SCAN;
 683
 684         /* allocate memory for dr scan command */
 685         (*last_cmd)->cmd.scan = cmd_queue_alloc(sizeof(scan_command_t));
 686         (*last_cmd)->cmd.scan->ir_scan = 0;
 687         (*last_cmd)->cmd.scan->num_fields = num_fields + bypass_devices;
 688         (*last_cmd)->cmd.scan->fields = cmd_queue_alloc((num_fields + bypass_devices) * sizeof(scan_field_t));
 689         (*last_cmd)->cmd.scan->end_state = end_state;
 690
 691         for (i = 0; i < jtag_num_devices; i++)
 692         {
 693                 (*last_cmd)->cmd.scan->fields[field_count].device = i;
 694
 695                 if (i == device_num)
 696                 {
 697                         int j;
 698 #ifdef _DEBUG_JTAG_IO_
 699                         /* if a device is listed, the BYPASS register must not be selected */
 700                         if (jtag_get_device(i)->bypass)
 701                         {
 702                                 ERROR("scan data for a device in BYPASS");
 703                                 exit(-1);
 704                         }
 705 #endif
 706                         for (j = 0; j < num_fields; j++)
 707                         {
 708                                 char out_value[4];
 709                                 scan_size = num_bits[j];
 710                                 buf_set_u32(out_value, 0, scan_size, value[j]);
 711                                 (*last_cmd)->cmd.scan->fields[field_count].num_bits = scan_size;
 712                                 (*last_cmd)->cmd.scan->fields[field_count].out_value = buf_cpy(out_value, cmd_queue_alloc(CEIL(scan_size, 8)), scan_size);
 713                                 (*last_cmd)->cmd.scan->fields[field_count].out_mask = NULL;
 714                                 (*last_cmd)->cmd.scan->fields[field_count].in_value = NULL;
 715                                 (*last_cmd)->cmd.scan->fields[field_count].in_check_value = NULL;
 716                                 (*last_cmd)->cmd.scan->fields[field_count].in_check_mask = NULL;
 717                                 (*last_cmd)->cmd.scan->fields[field_count].in_handler = NULL;
 718                                 (*last_cmd)->cmd.scan->fields[field_count++].in_handler_priv = NULL;
 719                         }
 720                 } else
 721                 {
 722 #ifdef _DEBUG_JTAG_IO_
 723                         /* if a device isn't listed, the BYPASS register should be selected */
 724                         if (!jtag_get_device(i)->bypass)
 725                         {
 726                                 ERROR("BUG: no scan data for a device not in BYPASS");
 727                                 exit(-1);
 728                         }
 729 #endif
 730                         /* program the scan field to 1 bit length, and ignore it's value */
 731                         (*last_cmd)->cmd.scan->fields[field_count].num_bits = 1;
 732                         (*last_cmd)->cmd.scan->fields[field_count].out_value = NULL;
 733                         (*last_cmd)->cmd.scan->fields[field_count].out_mask = NULL;
 734                         (*last_cmd)->cmd.scan->fields[field_count].in_value = NULL;
 735                         (*last_cmd)->cmd.scan->fields[field_count].in_check_value = NULL;
 736                         (*last_cmd)->cmd.scan->fields[field_count].in_check_mask = NULL;
 737                         (*last_cmd)->cmd.scan->fields[field_count].in_handler = NULL;
 738                         (*last_cmd)->cmd.scan->fields[field_count++].in_handler_priv = NULL;
 739                 }
 740         }
 741 }
 742
 743
 744
 745
 746 int jtag_add_plain_dr_scan(int num_fields, scan_field_t *fields, enum tap_state state)
 747 {
 748         if (jtag_trst == 1)
 749         {
 750                 WARNING("JTAG command queued, while TRST is low (TAP in reset)");
 751                 return jtag_error=ERROR_JTAG_TRST_ASSERTED;
 752         }
 753
 754         if (state != -1)
 755                 cmd_queue_end_state = state;
 756
 757         if (cmd_queue_cur_state == TAP_TLR && cmd_queue_end_state != TAP_TLR)
 758                 jtag_call_event_callbacks(JTAG_TRST_RELEASED);
 759
 760         if (cmd_queue_end_state == TAP_TLR)
 761                 jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
 762
 763         cmd_queue_cur_state = cmd_queue_end_state;
 764
 765         return interface_jtag_add_plain_dr_scan(num_fields, fields, cmd_queue_end_state);
 766 }
 767
 768 int MINIDRIVER(interface_jtag_add_plain_dr_scan)(int num_fields, scan_field_t *fields, enum tap_state state)
 769 {
 770         int i;
 771         jtag_command_t **last_cmd = jtag_get_last_command_p();
 772
 773         /* allocate memory for a new list member */
 774         *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
 775         last_comand_pointer = &((*last_cmd)->next);
 776         (*last_cmd)->next = NULL;
 777         (*last_cmd)->type = JTAG_SCAN;
 778
 779         /* allocate memory for scan command */
 780         (*last_cmd)->cmd.scan = cmd_queue_alloc(sizeof(scan_command_t));
 781         (*last_cmd)->cmd.scan->ir_scan = 0;
 782         (*last_cmd)->cmd.scan->num_fields = num_fields;
 783         (*last_cmd)->cmd.scan->fields = cmd_queue_alloc(num_fields * sizeof(scan_field_t));
 784         (*last_cmd)->cmd.scan->end_state = state;
 785
 786         for (i = 0; i < num_fields; i++)
 787         {
 788                 int num_bits = fields[i].num_bits;
 789                 int num_bytes = CEIL(fields[i].num_bits, 8);
 790                 (*last_cmd)->cmd.scan->fields[i].device = fields[i].device;
 791                 (*last_cmd)->cmd.scan->fields[i].num_bits = num_bits;
 792                 (*last_cmd)->cmd.scan->fields[i].out_value = buf_cpy(fields[i].out_value, cmd_queue_alloc(num_bytes), num_bits);
 793                 (*last_cmd)->cmd.scan->fields[i].out_mask = buf_cpy(fields[i].out_mask, cmd_queue_alloc(num_bytes), num_bits);
 794                 (*last_cmd)->cmd.scan->fields[i].in_value = fields[i].in_value;
 795                 (*last_cmd)->cmd.scan->fields[i].in_check_value = fields[i].in_check_value;
 796                 (*last_cmd)->cmd.scan->fields[i].in_check_mask = fields[i].in_check_mask;
 797                 (*last_cmd)->cmd.scan->fields[i].in_handler = fields[i].in_handler;
 798                 (*last_cmd)->cmd.scan->fields[i].in_handler_priv = fields[i].in_handler_priv;
 799         }
 800
 801         return ERROR_OK;
 802 }
 803 int jtag_add_statemove(enum tap_state state)
 804 {
 805         if (jtag_trst == 1)
 806         {
 807                 WARNING("JTAG command queued, while TRST is low (TAP in reset)");
 808                 return jtag_error=ERROR_JTAG_TRST_ASSERTED;
 809         }
 810
 811         if (state != -1)
 812                 cmd_queue_end_state = state;
 813
 814         if (cmd_queue_cur_state == TAP_TLR && cmd_queue_end_state != TAP_TLR)
 815                 jtag_call_event_callbacks(JTAG_TRST_RELEASED);
 816
 817         if (cmd_queue_end_state == TAP_TLR)
 818                 jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
 819
 820         cmd_queue_cur_state = cmd_queue_end_state;
 821
 822         return interface_jtag_add_statemove(cmd_queue_end_state);
 823 }
 824
 825 int MINIDRIVER(interface_jtag_add_statemove)(enum tap_state state)
 826 {
 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 int jtag_add_pathmove(int num_states, enum tap_state *path)
 843 {
 844         if (jtag_trst == 1)
 845         {
 846                 WARNING("JTAG command queued, while TRST is low (TAP in reset)");
 847                 return jtag_error=ERROR_JTAG_TRST_ASSERTED;
 848         }
 849
 850         /* the last state has to be a stable state */
 851         if (tap_move_map[path[num_states - 1]] == -1)
 852         {
 853                 ERROR("TAP path doesn't finish in a stable state");
 854                 return jtag_error=ERROR_JTAG_NOT_IMPLEMENTED;
 855         }
 856
 857         if (cmd_queue_cur_state == TAP_TLR && cmd_queue_end_state != TAP_TLR)
 858                 jtag_call_event_callbacks(JTAG_TRST_RELEASED);
 859
 860         if (cmd_queue_end_state == TAP_TLR)
 861                 jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
 862
 863         cmd_queue_cur_state = path[num_states - 1];
 864
 865         return interface_jtag_add_pathmove(num_states, path);
 866 }
 867
 868
 869 int MINIDRIVER(interface_jtag_add_pathmove)(int num_states, enum tap_state *path)
 870 {
 871         jtag_command_t **last_cmd = jtag_get_last_command_p();
 872         int i;
 873
 874         /* allocate memory for a new list member */
 875         *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
 876         last_comand_pointer = &((*last_cmd)->next);
 877         (*last_cmd)->next = NULL;
 878         (*last_cmd)->type = JTAG_PATHMOVE;
 879
 880         (*last_cmd)->cmd.pathmove = cmd_queue_alloc(sizeof(pathmove_command_t));
 881         (*last_cmd)->cmd.pathmove->num_states = num_states;
 882         (*last_cmd)->cmd.pathmove->path = cmd_queue_alloc(sizeof(enum tap_state) * num_states);
 883
 884         for (i = 0; i < num_states; i++)
 885                 (*last_cmd)->cmd.pathmove->path[i] = path[i];
 886
 887         return ERROR_OK;
 888 }
 889
 890 int MINIDRIVER(interface_jtag_add_runtest)(int num_cycles, enum tap_state state)
 891 {
 892         jtag_command_t **last_cmd = jtag_get_last_command_p();
 893
 894         /* allocate memory for a new list member */
 895         *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
 896         (*last_cmd)->next = NULL;
 897         last_comand_pointer = &((*last_cmd)->next);
 898         (*last_cmd)->type = JTAG_RUNTEST;
 899
 900         (*last_cmd)->cmd.runtest = cmd_queue_alloc(sizeof(runtest_command_t));
 901         (*last_cmd)->cmd.runtest->num_cycles = num_cycles;
 902         (*last_cmd)->cmd.runtest->end_state = state;
 903
 904         return ERROR_OK;
 905 }
 906
 907 int jtag_add_runtest(int num_cycles, enum tap_state state)
 908 {
 909         if (jtag_trst == 1)
 910         {
 911                 jtag_error=ERROR_JTAG_QUEUE_FAILED;
 912                 WARNING("JTAG command queued, while TRST is low (TAP in reset)");
 913                 return ERROR_JTAG_TRST_ASSERTED;
 914         }
 915
 916         if (state != -1)
 917                 cmd_queue_end_state = state;
 918
 919         if (cmd_queue_cur_state == TAP_TLR && cmd_queue_end_state != TAP_TLR)
 920                 jtag_call_event_callbacks(JTAG_TRST_RELEASED);
 921
 922         if (cmd_queue_end_state == TAP_TLR)
 923                 jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
 924
 925         cmd_queue_cur_state = cmd_queue_end_state;
 926
 927         /* executed by sw or hw fifo */
 928         return interface_jtag_add_runtest(num_cycles, cmd_queue_end_state);
 929 }
 930
 931 int jtag_add_reset(int req_trst, int req_srst)
 932 {
 933         int trst_with_tms = 0;
 934         int retval;
 935
 936         if (req_trst == -1)
 937                 req_trst = jtag_trst;
 938
 939         if (req_srst == -1)
 940                 req_srst = jtag_srst;
 941
 942         /* Make sure that jtag_reset_config allows the requested reset */
 943         /* if SRST pulls TRST, we can't fulfill srst == 1 with trst == 0 */
 944         if (((jtag_reset_config & RESET_SRST_PULLS_TRST) && (req_srst == 1)) && (req_trst == 0))
 945         {
 946                 return jtag_error=ERROR_JTAG_RESET_WOULD_ASSERT_TRST;
 947         }
 948
 949         /* if TRST pulls SRST, we reset with TAP T-L-R */
 950         if (((jtag_reset_config & RESET_TRST_PULLS_SRST) && (req_trst == 1)) && (req_srst == 0))
 951         {
 952                 req_trst = 0;
 953                 trst_with_tms = 1;
 954         }
 955
 956         if (req_srst && !(jtag_reset_config & RESET_HAS_SRST))
 957         {
 958                 ERROR("requested nSRST assertion, but the current configuration doesn't support this");
 959                 return jtag_error=ERROR_JTAG_RESET_CANT_SRST;
 960         }
 961
 962         if (req_trst && !(jtag_reset_config & RESET_HAS_TRST))
 963         {
 964                 req_trst = 0;
 965                 trst_with_tms = 1;
 966         }
 967
 968         jtag_trst = req_trst;
 969         jtag_srst = req_srst;
 970
 971         retval = interface_jtag_add_reset(req_trst, req_srst);
 972         if (retval!=ERROR_OK)
 973         {
 974                 jtag_error=retval;
 975                 return retval;
 976         }
 977
 978         if (jtag_srst)
 979         {
 980                 jtag_call_event_callbacks(JTAG_SRST_ASSERTED);
 981         }
 982         else
 983         {
 984                 jtag_call_event_callbacks(JTAG_SRST_RELEASED);
 985                 if (jtag_nsrst_delay)
 986                         jtag_add_sleep(jtag_nsrst_delay * 1000);
 987         }
 988
 989         if (trst_with_tms)
 990         {
 991                 jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
 992                 jtag_add_end_state(TAP_TLR);
 993                 jtag_add_statemove(TAP_TLR);
 994
 995                 return ERROR_OK;
 996         }
 997
 998         if (jtag_trst)
 999         {
1000                 /* we just asserted nTRST, so we're now in Test-Logic-Reset,
1001                  * and inform possible listeners about this
1002                  */
1003                 cmd_queue_cur_state = TAP_TLR;
1004                 jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
1005         }
1006         else
1007         {
1008                 /* the nTRST line got deasserted, so we're still in Test-Logic-Reset,
1009                  * but we might want to add a delay to give the TAP time to settle
1010                  */
1011                 if (jtag_ntrst_delay)
1012                         jtag_add_sleep(jtag_ntrst_delay * 1000);
1013         }
1014
1015         return retval;
1016
1017 }
1018
1019 int MINIDRIVER(interface_jtag_add_reset)(int req_trst, int req_srst)
1020 {
1021         jtag_command_t **last_cmd = jtag_get_last_command_p();
1022
1023         /* allocate memory for a new list member */
1024         *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
1025         (*last_cmd)->next = NULL;
1026         last_comand_pointer = &((*last_cmd)->next);
1027         (*last_cmd)->type = JTAG_RESET;
1028
1029         (*last_cmd)->cmd.reset = cmd_queue_alloc(sizeof(reset_command_t));
1030         (*last_cmd)->cmd.reset->trst = req_trst;
1031         (*last_cmd)->cmd.reset->srst = req_srst;
1032
1033
1034         return ERROR_OK;
1035 }
1036
1037 int MINIDRIVER(interface_jtag_add_end_state)(enum tap_state state)
1038 {
1039         jtag_command_t **last_cmd = jtag_get_last_command_p();
1040
1041         /* allocate memory for a new list member */
1042         *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
1043         (*last_cmd)->next = NULL;
1044         last_comand_pointer = &((*last_cmd)->next);
1045         (*last_cmd)->type = JTAG_END_STATE;
1046
1047         (*last_cmd)->cmd.end_state = cmd_queue_alloc(sizeof(end_state_command_t));
1048         (*last_cmd)->cmd.end_state->end_state = state;
1049
1050         return ERROR_OK;
1051 }
1052
1053 int jtag_add_end_state(enum tap_state state)
1054 {
1055         if (state != -1)
1056                 cmd_queue_end_state = state;
1057         int retval = interface_jtag_add_end_state(cmd_queue_end_state);
1058         return retval;
1059 }
1060
1061 int MINIDRIVER(interface_jtag_add_sleep)(u32 us)
1062 {
1063         jtag_command_t **last_cmd = jtag_get_last_command_p();
1064
1065         /* allocate memory for a new list member */
1066         *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
1067         (*last_cmd)->next = NULL;
1068         last_comand_pointer = &((*last_cmd)->next);
1069         (*last_cmd)->type = JTAG_SLEEP;
1070
1071         (*last_cmd)->cmd.sleep = cmd_queue_alloc(sizeof(sleep_command_t));
1072         (*last_cmd)->cmd.sleep->us = us;
1073
1074         return ERROR_OK;
1075 }
1076
1077 int jtag_add_sleep(u32 us)
1078 {
1079         return interface_jtag_add_sleep(us);
1080 }
1081
1082 int jtag_scan_size(scan_command_t *cmd)
1083 {
1084         int bit_count = 0;
1085         int i;
1086
1087         /* count bits in scan command */
1088         for (i = 0; i < cmd->num_fields; i++)
1089         {
1090                 bit_count += cmd->fields[i].num_bits;
1091         }
1092
1093         return bit_count;
1094 }
1095
1096 int jtag_build_buffer(scan_command_t *cmd, u8 **buffer)
1097 {
1098         int bit_count = 0;
1099         int i;
1100
1101         bit_count = jtag_scan_size(cmd);
1102         *buffer = malloc(CEIL(bit_count, 8));
1103
1104         bit_count = 0;
1105
1106         for (i = 0; i < cmd->num_fields; i++)
1107         {
1108                 if (cmd->fields[i].out_value)
1109                 {
1110 #ifdef _DEBUG_JTAG_IO_
1111                         char* char_buf = buf_to_str(cmd->fields[i].out_value, (cmd->fields[i].num_bits > 64) ? 64 : cmd->fields[i].num_bits, 16);
1112 #endif
1113                         buf_set_buf(cmd->fields[i].out_value, 0, *buffer, bit_count, cmd->fields[i].num_bits);
1114 #ifdef _DEBUG_JTAG_IO_
1115                         DEBUG("fields[%i].out_value: 0x%s", i, char_buf);
1116                         free(char_buf);
1117 #endif
1118                 }
1119
1120                 bit_count += cmd->fields[i].num_bits;
1121         }
1122
1123         return bit_count;
1124
1125 }
1126
1127 int jtag_read_buffer(u8 *buffer, scan_command_t *cmd)
1128 {
1129         int i;
1130         int bit_count = 0;
1131         int retval;
1132
1133         /* we return ERROR_OK, unless a check fails, or a handler reports a problem */
1134         retval = ERROR_OK;
1135
1136         for (i = 0; i < cmd->num_fields; i++)
1137         {
1138                 /* if neither in_value nor in_handler
1139                  * are specified we don't have to examine this field
1140                  */
1141                 if (cmd->fields[i].in_value || cmd->fields[i].in_handler)
1142                 {
1143                         int num_bits = cmd->fields[i].num_bits;
1144                         u8 *captured = buf_set_buf(buffer, bit_count, malloc(CEIL(num_bits, 8)), 0, num_bits);
1145
1146 #ifdef _DEBUG_JTAG_IO_
1147                         char *char_buf;
1148
1149                         char_buf = buf_to_str(captured, (num_bits > 64) ? 64 : num_bits, 16);
1150                         DEBUG("fields[%i].in_value: 0x%s", i, char_buf);
1151                         free(char_buf);
1152 #endif
1153
1154                         if (cmd->fields[i].in_value)
1155                         {
1156                                 buf_cpy(captured, cmd->fields[i].in_value, num_bits);
1157
1158                                 if (cmd->fields[i].in_handler)
1159                                 {
1160                                         if (cmd->fields[i].in_handler(cmd->fields[i].in_value, cmd->fields[i].in_handler_priv, cmd->fields+i) != ERROR_OK)
1161                                         {
1162                                                 WARNING("in_handler reported a failed check");
1163                                                 retval = ERROR_JTAG_QUEUE_FAILED;
1164                                         }
1165                                 }
1166                         }
1167
1168                         /* no in_value specified, but a handler takes care of the scanned data */
1169                         if (cmd->fields[i].in_handler && (!cmd->fields[i].in_value))
1170                         {
1171                                 if (cmd->fields[i].in_handler(captured, cmd->fields[i].in_handler_priv, cmd->fields+i) != ERROR_OK)
1172                                 {
1173                                         /* We're going to call the error:handler later, but if the in_handler
1174                                          * reported an error we report this failure upstream
1175                                          */
1176                                         WARNING("in_handler reported a failed check");
1177                                         retval = ERROR_JTAG_QUEUE_FAILED;
1178                                 }
1179                         }
1180
1181                         free(captured);
1182                 }
1183                 bit_count += cmd->fields[i].num_bits;
1184         }
1185
1186         return retval;
1187 }
1188
1189 int jtag_check_value(u8 *captured, void *priv, scan_field_t *field)
1190 {
1191         int retval = ERROR_OK;
1192         int num_bits = field->num_bits;
1193
1194         int compare_failed = 0;
1195
1196         if (field->in_check_mask)
1197                 compare_failed = buf_cmp_mask(captured, field->in_check_value, field->in_check_mask, num_bits);
1198         else
1199                 compare_failed = buf_cmp(captured, field->in_check_value, num_bits);
1200
1201         if (compare_failed)
1202                 {
1203                 /* An error handler could have caught the failing check
1204                  * only report a problem when there wasn't a handler, or if the handler
1205                  * acknowledged the error
1206                  */
1207                 if (compare_failed)
1208                 {
1209                         char *captured_char = buf_to_str(captured, (num_bits > 64) ? 64 : num_bits, 16);
1210                         char *in_check_value_char = buf_to_str(field->in_check_value, (num_bits > 64) ? 64 : num_bits, 16);
1211
1212                         if (field->in_check_mask)
1213                         {
1214                                 char *in_check_mask_char;
1215                                 in_check_mask_char = buf_to_str(field->in_check_mask, (num_bits > 64) ? 64 : num_bits, 16);
1216                                 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);
1217                                 free(in_check_mask_char);
1218                         }
1219                         else
1220                         {
1221                                 WARNING("value captured during scan didn't pass the requested check: captured: 0x%s check_value: 0x%s", captured_char, in_check_value_char);
1222                         }
1223
1224                         free(captured_char);
1225                         free(in_check_value_char);
1226
1227                         retval = ERROR_JTAG_QUEUE_FAILED;
1228                 }
1229
1230         }
1231         return retval;
1232 }
1233
1234 /*
1235   set up checking of this field using the in_handler. The values passed in must be valid until
1236   after jtag_execute() has completed.
1237  */
1238 void jtag_set_check_value(scan_field_t *field, u8 *value, u8 *mask, error_handler_t *in_error_handler)
1239 {
1240         if (value)
1241                 field->in_handler = jtag_check_value;
1242         else
1243                 field->in_handler = NULL;       /* No check, e.g. embeddedice uses value==NULL to indicate no check */
1244         field->in_handler_priv = NULL;  /* this will be filled in at the invocation site to point to the field duplicate */
1245         field->in_check_value = value;
1246         field->in_check_mask = mask;
1247 }
1248
1249 enum scan_type jtag_scan_type(scan_command_t *cmd)
1250 {
1251         int i;
1252         int type = 0;
1253
1254         for (i = 0; i < cmd->num_fields; i++)
1255         {
1256                 if (cmd->fields[i].in_value || cmd->fields[i].in_handler)
1257                         type |= SCAN_IN;
1258                 if (cmd->fields[i].out_value)
1259                         type |= SCAN_OUT;
1260         }
1261
1262         return type;
1263 }
1264
1265 int MINIDRIVER(interface_jtag_execute_queue)(void)
1266 {
1267         int retval;
1268
1269         retval = jtag->execute_queue();
1270
1271         cmd_queue_free();
1272
1273         jtag_command_queue = NULL;
1274         last_comand_pointer = &jtag_command_queue;
1275
1276         return retval;
1277 }
1278
1279 int jtag_execute_queue(void)
1280 {
1281         int retval=interface_jtag_execute_queue();
1282         if (retval==ERROR_OK)
1283         {
1284         retval=jtag_error;
1285         }
1286         jtag_error=ERROR_OK;
1287         return retval;
1288 }
1289
1290 int jtag_reset_callback(enum jtag_event event, void *priv)
1291 {
1292         jtag_device_t *device = priv;
1293
1294         DEBUG("-");
1295
1296         if (event == JTAG_TRST_ASSERTED)
1297         {
1298                 buf_set_ones(device->cur_instr, device->ir_length);
1299                 device->bypass = 1;
1300         }
1301
1302         return ERROR_OK;
1303 }
1304
1305 void jtag_sleep(u32 us)
1306 {
1307         usleep(us);
1308 }
1309
1310 /* Try to examine chain layout according to IEEE 1149.1 §12
1311  */
1312 int jtag_examine_chain()
1313 {
1314         jtag_device_t *device = jtag_devices;
1315         scan_field_t field;
1316         u8 idcode_buffer[JTAG_MAX_CHAIN_SIZE * 4];
1317         int i;
1318         int bit_count;
1319         int device_count = 0;
1320         u8 zero_check = 0x0;
1321         u8 one_check = 0xff;
1322
1323         field.device = 0;
1324         field.num_bits = sizeof(idcode_buffer) * 8;
1325         field.out_value = idcode_buffer;
1326         field.out_mask = NULL;
1327         field.in_value = idcode_buffer;
1328         field.in_check_value = NULL;
1329         field.in_check_mask = NULL;
1330         field.in_handler = NULL;
1331         field.in_handler_priv = NULL;
1332
1333         for (i = 0; i < JTAG_MAX_CHAIN_SIZE; i++)
1334         {
1335                 buf_set_u32(idcode_buffer, i * 32, 32, 0x000000FF);
1336         }
1337
1338         jtag_add_plain_dr_scan(1, &field, TAP_TLR);
1339         jtag_execute_queue();
1340
1341         for (i = 0; i < JTAG_MAX_CHAIN_SIZE * 4; i++)
1342         {
1343                 zero_check |= idcode_buffer[i];
1344                 one_check &= idcode_buffer[i];
1345         }
1346
1347         /* if there wasn't a single non-zero bit or if all bits were one, the scan isn't valid */
1348         if ((zero_check == 0x00) || (one_check == 0xff))
1349         {
1350                 ERROR("JTAG communication failure, check connection, JTAG interface, target power etc.");
1351                 return ERROR_JTAG_INIT_FAILED;
1352         }
1353
1354         for (bit_count = 0; bit_count < (JTAG_MAX_CHAIN_SIZE * 32) - 31;)
1355         {
1356                 u32 idcode = buf_get_u32(idcode_buffer, bit_count, 32);
1357                 if ((idcode & 1) == 0)
1358                 {
1359                         /* LSB must not be 0, this indicates a device in bypass */
1360                         device_count++;
1361
1362                         bit_count += 1;
1363                 }
1364                 else
1365                 {
1366                         u32 manufacturer;
1367                         u32 part;
1368                         u32 version;
1369
1370                         if (idcode == 0x000000FF)
1371                         {
1372                                 /* End of chain (invalid manufacturer ID) */
1373                                 break;
1374                         }
1375
1376                         if (device)
1377                         {
1378                                 device->idcode = idcode;
1379                                 device = device->next;
1380                         }
1381                         device_count++;
1382
1383                         manufacturer = (idcode & 0xffe) >> 1;
1384                         part = (idcode & 0xffff000) >> 12;
1385                         version = (idcode & 0xf0000000) >> 28;
1386
1387                         INFO("JTAG device found: 0x%8.8x (Manufacturer: 0x%3.3x, Part: 0x%4.4x, Version: 0x%1.1x)",
1388                                 idcode, manufacturer, part, version);
1389
1390                         bit_count += 32;
1391                 }
1392         }
1393
1394         /* see if number of discovered devices matches configuration */
1395         if (device_count != jtag_num_devices)
1396         {
1397                 ERROR("number of discovered devices in JTAG chain (%i) doesn't match configuration (%i)",
1398                         device_count, jtag_num_devices);
1399                 ERROR("check the config file and ensure proper JTAG communication (connections, speed, ...)");
1400                 return ERROR_JTAG_INIT_FAILED;
1401         }
1402
1403         return ERROR_OK;
1404 }
1405
1406 int jtag_validate_chain()
1407 {
1408         jtag_device_t *device = jtag_devices;
1409         int total_ir_length = 0;
1410         u8 *ir_test = NULL;
1411         scan_field_t field;
1412         int chain_pos = 0;
1413
1414         while (device)
1415         {
1416                 total_ir_length += device->ir_length;
1417                 device = device->next;
1418         }
1419
1420         total_ir_length += 2;
1421         ir_test = malloc(CEIL(total_ir_length, 8));
1422         buf_set_ones(ir_test, total_ir_length);
1423
1424         field.device = 0;
1425         field.num_bits = total_ir_length;
1426         field.out_value = ir_test;
1427         field.out_mask = NULL;
1428         field.in_value = ir_test;
1429         field.in_check_value = NULL;
1430         field.in_check_mask = NULL;
1431         field.in_handler = NULL;
1432         field.in_handler_priv = NULL;
1433
1434         jtag_add_plain_ir_scan(1, &field, TAP_TLR);
1435         jtag_execute_queue();
1436
1437         device = jtag_devices;
1438         while (device)
1439         {
1440                 if (buf_get_u32(ir_test, chain_pos, 2) != 0x1)
1441                 {
1442                         char *cbuf = buf_to_str(ir_test, total_ir_length, 16);
1443                         ERROR("Error validating JTAG scan chain, IR mismatch, scan returned 0x%s", cbuf);
1444                         free(cbuf);
1445                         free(ir_test);
1446                         return ERROR_JTAG_INIT_FAILED;
1447                 }
1448                 chain_pos += device->ir_length;
1449                 device = device->next;
1450         }
1451
1452         if (buf_get_u32(ir_test, chain_pos, 2) != 0x3)
1453         {
1454                 char *cbuf = buf_to_str(ir_test, total_ir_length, 16);
1455                 ERROR("Error validating JTAG scan chain, IR mismatch, scan returned 0x%s", cbuf);
1456                 free(cbuf);
1457                 free(ir_test);
1458                 return ERROR_JTAG_INIT_FAILED;
1459         }
1460
1461         free(ir_test);
1462
1463         return ERROR_OK;
1464 }
1465
1466 int jtag_register_commands(struct command_context_s *cmd_ctx)
1467 {
1468         register_command(cmd_ctx, NULL, "interface", handle_interface_command,
1469                 COMMAND_CONFIG, NULL);
1470         register_command(cmd_ctx, NULL, "jtag_speed", handle_jtag_speed_command,
1471                 COMMAND_ANY, "set jtag speed (if supported) <speed>");
1472         register_command(cmd_ctx, NULL, "jtag_device", handle_jtag_device_command,
1473                 COMMAND_CONFIG, "jtag_device <ir_length> <ir_expected> <ir_mask>");
1474         register_command(cmd_ctx, NULL, "reset_config", handle_reset_config_command,
1475                 COMMAND_CONFIG, NULL);
1476         register_command(cmd_ctx, NULL, "jtag_nsrst_delay", handle_jtag_nsrst_delay_command,
1477                 COMMAND_CONFIG, NULL);
1478         register_command(cmd_ctx, NULL, "jtag_ntrst_delay", handle_jtag_ntrst_delay_command,
1479                 COMMAND_CONFIG, NULL);
1480
1481         register_command(cmd_ctx, NULL, "scan_chain", handle_scan_chain_command,
1482                 COMMAND_EXEC, "print current scan chain configuration");
1483
1484         register_command(cmd_ctx, NULL, "endstate", handle_endstate_command,
1485                 COMMAND_EXEC, "finish JTAG operations in <tap_state>");
1486         register_command(cmd_ctx, NULL, "jtag_reset", handle_jtag_reset_command,
1487                 COMMAND_EXEC, "toggle reset lines <trst> <srst>");
1488         register_command(cmd_ctx, NULL, "runtest", handle_runtest_command,
1489                 COMMAND_EXEC, "move to Run-Test/Idle, and execute <num_cycles>");
1490         register_command(cmd_ctx, NULL, "statemove", handle_statemove_command,
1491                 COMMAND_EXEC, "move to current endstate or [tap_state]");
1492         register_command(cmd_ctx, NULL, "irscan", handle_irscan_command,
1493                 COMMAND_EXEC, "execute IR scan <device> <instr> [dev2] [instr2] ...");
1494         register_command(cmd_ctx, NULL, "drscan", handle_drscan_command,
1495                 COMMAND_EXEC, "execute DR scan <device> <var> [dev2] [var2] ...");
1496
1497         register_command(cmd_ctx, NULL, "verify_ircapture", handle_verify_ircapture_command,
1498                 COMMAND_ANY, "verify value captured during Capture-IR <enable|disable>");
1499         return ERROR_OK;
1500 }
1501
1502 int jtag_interface_init(struct command_context_s *cmd_ctx)
1503 {
1504         if (!jtag_interface)
1505         {
1506                 /* nothing was previously specified by "interface" command */
1507                 ERROR("JTAG interface has to be specified, see \"interface\" command");
1508                 return ERROR_JTAG_INVALID_INTERFACE;
1509         }
1510
1511         if (jtag_interface->init() != ERROR_OK)
1512                 return ERROR_JTAG_INIT_FAILED;
1513
1514         jtag = jtag_interface;
1515         return ERROR_OK;
1516 }
1517
1518 int jtag_init(struct command_context_s *cmd_ctx)
1519 {
1520         int validate_tries = 0;
1521         jtag_device_t *device;
1522
1523         DEBUG("-");
1524
1525         if (!jtag && jtag_interface_init(cmd_ctx) != ERROR_OK)
1526                 return ERROR_JTAG_INIT_FAILED;
1527
1528         device = jtag_devices;
1529         jtag_ir_scan_size = 0;
1530         jtag_num_devices = 0;
1531         while (device != NULL)
1532         {
1533                 jtag_ir_scan_size += device->ir_length;
1534                 jtag_num_devices++;
1535                 device = device->next;
1536         }
1537
1538         jtag_add_statemove(TAP_TLR);
1539         jtag_execute_queue();
1540
1541         /* examine chain first, as this could discover the real chain layout */
1542         if (jtag_examine_chain() != ERROR_OK)
1543         {
1544                 ERROR("trying to validate configured JTAG chain anyway...");
1545         }
1546
1547         while (jtag_validate_chain() != ERROR_OK)
1548         {
1549                 validate_tries++;
1550                 if (validate_tries > 5)
1551                 {
1552                         ERROR("Could not validate JTAG chain, exit");
1553                         return ERROR_JTAG_INVALID_INTERFACE;
1554                 }
1555                 usleep(10000);
1556         }
1557
1558         return ERROR_OK;
1559 }
1560
1561 int handle_interface_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1562 {
1563         int i;
1564
1565         /* check whether the interface is already configured */
1566         if (jtag_interface)
1567         {
1568                 WARNING("Interface already configured, ignoring");
1569                 return ERROR_OK;
1570         }
1571
1572         /* interface name is a mandatory argument */
1573         if (argc < 1 || args[0][0] == '\0')
1574         {
1575                 return ERROR_COMMAND_SYNTAX_ERROR;
1576         }
1577
1578         for (i=0; jtag_interfaces[i]; i++)
1579         {
1580                 if (strcmp(args[0], jtag_interfaces[i]->name) == 0)
1581                 {
1582                         if (jtag_interfaces[i]->register_commands(cmd_ctx) != ERROR_OK)
1583                                 exit(-1);
1584
1585                         jtag_interface = jtag_interfaces[i];
1586                         return ERROR_OK;
1587                 }
1588         }
1589
1590         /* no valid interface was found (i.e. the configuration option,
1591          * didn't match one of the compiled-in interfaces
1592          */
1593         ERROR("No valid jtag interface found (%s)", args[0]);
1594         ERROR("compiled-in jtag interfaces:");
1595         for (i = 0; jtag_interfaces[i]; i++)
1596         {
1597                 ERROR("%i: %s", i, jtag_interfaces[i]->name);
1598         }
1599
1600         return ERROR_JTAG_INVALID_INTERFACE;
1601 }
1602
1603 int handle_jtag_device_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1604 {
1605         jtag_device_t **last_device_p = &jtag_devices;
1606
1607         if (*last_device_p)
1608         {
1609                 while ((*last_device_p)->next)
1610                         last_device_p = &((*last_device_p)->next);
1611                 last_device_p = &((*last_device_p)->next);
1612         }
1613
1614         if (argc < 3)
1615                 return ERROR_OK;
1616
1617         *last_device_p = malloc(sizeof(jtag_device_t));
1618         (*last_device_p)->ir_length = strtoul(args[0], NULL, 0);
1619
1620         (*last_device_p)->expected = malloc((*last_device_p)->ir_length);
1621         buf_set_u32((*last_device_p)->expected, 0, (*last_device_p)->ir_length, strtoul(args[1], NULL, 0));
1622         (*last_device_p)->expected_mask = malloc((*last_device_p)->ir_length);
1623         buf_set_u32((*last_device_p)->expected_mask, 0, (*last_device_p)->ir_length, strtoul(args[2], NULL, 0));
1624
1625         (*last_device_p)->cur_instr = malloc((*last_device_p)->ir_length);
1626         (*last_device_p)->bypass = 1;
1627         buf_set_ones((*last_device_p)->cur_instr, (*last_device_p)->ir_length);
1628
1629         (*last_device_p)->next = NULL;
1630
1631         jtag_register_event_callback(jtag_reset_callback, (*last_device_p));
1632
1633         jtag_num_devices++;
1634
1635         return ERROR_OK;
1636 }
1637
1638 int handle_scan_chain_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1639 {
1640         jtag_device_t *device = jtag_devices;
1641         int device_count = 0;
1642
1643         while (device)
1644         {
1645                 u32 expected, expected_mask, cur_instr;
1646                 expected = buf_get_u32(device->expected, 0, device->ir_length);
1647                 expected_mask = buf_get_u32(device->expected_mask, 0, device->ir_length);
1648                 cur_instr = buf_get_u32(device->cur_instr, 0, device->ir_length);
1649                 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);
1650                 device = device->next;
1651                 device_count++;
1652         }
1653
1654         return ERROR_OK;
1655 }
1656
1657 int handle_reset_config_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1658 {
1659         if (argc >= 1)
1660         {
1661                 if (strcmp(args[0], "none") == 0)
1662                         jtag_reset_config = RESET_NONE;
1663                 else if (strcmp(args[0], "trst_only") == 0)
1664                         jtag_reset_config = RESET_HAS_TRST;
1665                 else if (strcmp(args[0], "srst_only") == 0)
1666                         jtag_reset_config = RESET_HAS_SRST;
1667                 else if (strcmp(args[0], "trst_and_srst") == 0)
1668                         jtag_reset_config = RESET_TRST_AND_SRST;
1669                 else
1670                 {
1671                         ERROR("invalid reset_config argument, defaulting to none");
1672                         jtag_reset_config = RESET_NONE;
1673                         return ERROR_INVALID_ARGUMENTS;
1674                 }
1675         }
1676
1677         if (argc >= 2)
1678         {
1679                 if (strcmp(args[1], "srst_pulls_trst") == 0)
1680                         jtag_reset_config |= RESET_SRST_PULLS_TRST;
1681                 else if (strcmp(args[1], "trst_pulls_srst") == 0)
1682                         jtag_reset_config |= RESET_TRST_PULLS_SRST;
1683                 else if (strcmp(args[1], "combined") == 0)
1684                         jtag_reset_config |= RESET_SRST_PULLS_TRST | RESET_TRST_PULLS_SRST;
1685                 else if (strcmp(args[1], "separate") == 0)
1686                         jtag_reset_config &= ~(RESET_SRST_PULLS_TRST | RESET_TRST_PULLS_SRST);
1687                 else
1688                 {
1689                         ERROR("invalid reset_config argument, defaulting to none");
1690                         jtag_reset_config = RESET_NONE;
1691                         return ERROR_INVALID_ARGUMENTS;
1692                 }
1693         }
1694
1695         if (argc >= 3)
1696         {
1697                 if (strcmp(args[2], "trst_open_drain") == 0)
1698                         jtag_reset_config |= RESET_TRST_OPEN_DRAIN;
1699                 else if (strcmp(args[2], "trst_push_pull") == 0)
1700                         jtag_reset_config &= ~RESET_TRST_OPEN_DRAIN;
1701                 else
1702                 {
1703                         ERROR("invalid reset_config argument, defaulting to none");
1704                         jtag_reset_config = RESET_NONE;
1705                         return ERROR_INVALID_ARGUMENTS;
1706                 }
1707         }
1708
1709         if (argc >= 4)
1710         {
1711                 if (strcmp(args[3], "srst_push_pull") == 0)
1712                         jtag_reset_config |= RESET_SRST_PUSH_PULL;
1713                 else if (strcmp(args[3], "srst_open_drain") == 0)
1714                         jtag_reset_config &= ~RESET_SRST_PUSH_PULL;
1715                 else
1716                 {
1717                         ERROR("invalid reset_config argument, defaulting to none");
1718                         jtag_reset_config = RESET_NONE;
1719                         return ERROR_INVALID_ARGUMENTS;
1720                 }
1721         }
1722
1723         return ERROR_OK;
1724 }
1725
1726 int handle_jtag_nsrst_delay_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1727 {
1728         if (argc < 1)
1729         {
1730                 ERROR("jtag_nsrst_delay <ms> command takes one required argument");
1731                 exit(-1);
1732         }
1733         else
1734         {
1735                 jtag_nsrst_delay = strtoul(args[0], NULL, 0);
1736         }
1737
1738         return ERROR_OK;
1739 }
1740
1741 int handle_jtag_ntrst_delay_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1742 {
1743         if (argc < 1)
1744         {
1745                 ERROR("jtag_ntrst_delay <ms> command takes one required argument");
1746                 exit(-1);
1747         }
1748         else
1749         {
1750                 jtag_ntrst_delay = strtoul(args[0], NULL, 0);
1751         }
1752
1753         return ERROR_OK;
1754 }
1755
1756 int handle_jtag_speed_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1757 {
1758         if (argc == 0)
1759                 command_print(cmd_ctx, "jtag_speed: %i", jtag_speed);
1760
1761         if (argc > 0)
1762         {
1763                 /* this command can be called during CONFIG,
1764                  * in which case jtag isn't initialized */
1765                 if (jtag)
1766                         jtag->speed(strtoul(args[0], NULL, 0));
1767                 else
1768                         jtag_speed = strtoul(args[0], NULL, 0);
1769         }
1770
1771         return ERROR_OK;
1772 }
1773
1774 int handle_endstate_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1775 {
1776         enum tap_state state;
1777
1778         if (argc < 1)
1779         {
1780                 return ERROR_COMMAND_SYNTAX_ERROR;
1781         }
1782         else
1783         {
1784                 for (state = 0; state < 16; state++)
1785                 {
1786                         if (strcmp(args[0], tap_state_strings[state]) == 0)
1787                         {
1788                                 jtag_add_end_state(state);
1789                                 jtag_execute_queue();
1790                         }
1791                 }
1792         }
1793         command_print(cmd_ctx, "current endstate: %s", tap_state_strings[end_state]);
1794
1795         return ERROR_OK;
1796 }
1797
1798 int handle_jtag_reset_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1799 {
1800         int trst = -1;
1801         int srst = -1;
1802         int retval;
1803
1804         if (argc < 2)
1805         {
1806                 return ERROR_COMMAND_SYNTAX_ERROR;
1807
1808         }
1809
1810         if (args[0][0] == '1')
1811                 trst = 1;
1812         else if (args[0][0] == '0')
1813                 trst = 0;
1814         else
1815         {
1816                 return ERROR_COMMAND_SYNTAX_ERROR;
1817         }
1818
1819         if (args[1][0] == '1')
1820                 srst = 1;
1821         else if (args[1][0] == '0')
1822                 srst = 0;
1823         else
1824         {
1825                 return ERROR_COMMAND_SYNTAX_ERROR;
1826         }
1827
1828         if (!jtag && jtag_interface_init(cmd_ctx) != ERROR_OK)
1829                 return ERROR_JTAG_INIT_FAILED;
1830
1831         if ((retval = jtag_add_reset(trst, srst)) != ERROR_OK)
1832         {
1833                 switch (retval)
1834                 {
1835                         case ERROR_JTAG_RESET_WOULD_ASSERT_TRST:
1836                                 command_print(cmd_ctx, "requested reset would assert trst\nif this is acceptable, use jtag_reset 1 %c", args[1][0]);
1837                                 break;
1838                         case ERROR_JTAG_RESET_CANT_SRST:
1839                                 command_print(cmd_ctx, "can't assert srst because the current reset_config doesn't support it");
1840                                 break;
1841                         default:
1842                                 command_print(cmd_ctx, "unknown error");
1843                 }
1844         }
1845         jtag_execute_queue();
1846
1847         return ERROR_OK;
1848 }
1849
1850 int handle_runtest_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1851 {
1852         if (argc < 1)
1853         {
1854                 return ERROR_COMMAND_SYNTAX_ERROR;
1855         }
1856
1857         jtag_add_runtest(strtol(args[0], NULL, 0), -1);
1858         jtag_execute_queue();
1859
1860         return ERROR_OK;
1861
1862 }
1863
1864 int handle_statemove_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1865 {
1866         enum tap_state state;
1867
1868         state = -1;
1869         if (argc == 1)
1870         {
1871                 for (state = 0; state < 16; state++)
1872                 {
1873                         if (strcmp(args[0], tap_state_strings[state]) == 0)
1874                         {
1875                                 break;
1876                         }
1877                 }
1878         }
1879
1880         jtag_add_statemove(state);
1881         jtag_execute_queue();
1882
1883         return ERROR_OK;
1884
1885 }
1886
1887 int handle_irscan_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1888 {
1889         int i;
1890         scan_field_t *fields;
1891
1892         if ((argc < 2) || (argc % 2))
1893         {
1894                 return ERROR_COMMAND_SYNTAX_ERROR;
1895         }
1896
1897         fields = malloc(sizeof(scan_field_t) * argc / 2);
1898
1899         for (i = 0; i < argc / 2; i++)
1900         {
1901                 int device = strtoul(args[i*2], NULL, 0);
1902                 int field_size = jtag_get_device(device)->ir_length;
1903                 fields[i].device = device;
1904                 fields[i].out_value = malloc(CEIL(field_size, 8));
1905                 buf_set_u32(fields[i].out_value, 0, field_size, strtoul(args[i*2+1], NULL, 0));
1906                 fields[i].out_mask = NULL;
1907                 fields[i].in_value = NULL;
1908                 fields[i].in_check_mask = NULL;
1909                 fields[i].in_handler = NULL;
1910                 fields[i].in_handler_priv = NULL;
1911         }
1912
1913         jtag_add_ir_scan(argc / 2, fields, -1);
1914         jtag_execute_queue();
1915
1916         for (i = 0; i < argc / 2; i++)
1917                 free(fields[i].out_value);
1918
1919         free (fields);
1920
1921         return ERROR_OK;
1922 }
1923
1924 int handle_drscan_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1925 {
1926         scan_field_t *fields;
1927         int num_fields = 0;
1928         int field_count = 0;
1929         var_t *var;
1930         int i, j;
1931
1932         if ((argc < 2) || (argc % 2))
1933         {
1934                 return ERROR_COMMAND_SYNTAX_ERROR;
1935         }
1936
1937         for (i = 0; i < argc; i+=2)
1938         {
1939                 var = get_var_by_namenum(args[i+1]);
1940                 if (var)
1941                 {
1942                         num_fields += var->num_fields;
1943                 }
1944                 else
1945                 {
1946                         command_print(cmd_ctx, "variable %s doesn't exist", args[i+1]);
1947                         return ERROR_OK;
1948                 }
1949         }
1950
1951         fields = malloc(sizeof(scan_field_t) * num_fields);
1952
1953         for (i = 0; i < argc; i+=2)
1954         {
1955                 var = get_var_by_namenum(args[i+1]);
1956
1957                 for (j = 0; j < var->num_fields; j++)
1958                 {
1959                         fields[field_count].device = strtol(args[i], NULL, 0);
1960                         fields[field_count].num_bits = var->fields[j].num_bits;
1961                         fields[field_count].out_value = malloc(CEIL(var->fields[j].num_bits, 8));
1962                         buf_set_u32(fields[field_count].out_value, 0, var->fields[j].num_bits, var->fields[j].value);
1963                         fields[field_count].out_mask = NULL;
1964                         fields[field_count].in_value = fields[field_count].out_value;
1965                         fields[field_count].in_check_mask = NULL;
1966                         fields[field_count].in_check_value = NULL;
1967                         fields[field_count].in_handler = field_le_to_host;
1968                         fields[field_count++].in_handler_priv = &(var->fields[j]);
1969                 }
1970         }
1971
1972         jtag_add_dr_scan(num_fields, fields, -1);
1973         jtag_execute_queue();
1974
1975         for (i = 0; i < argc / 2; i++)
1976                 free(fields[i].out_value);
1977
1978         free(fields);
1979
1980         return ERROR_OK;
1981 }
1982
1983 int handle_verify_ircapture_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1984 {
1985         if (argc == 1)
1986         {
1987                 if (strcmp(args[0], "enable") == 0)
1988                 {
1989                         jtag_verify_capture_ir = 1;
1990                 }
1991                 else if (strcmp(args[0], "disable") == 0)
1992                 {
1993                         jtag_verify_capture_ir = 0;
1994                 } else
1995                 {
1996                         return ERROR_COMMAND_SYNTAX_ERROR;
1997                 }
1998         } else if (argc != 0)
1999         {
2000                 return ERROR_COMMAND_SYNTAX_ERROR;
2001         }
2002
2003         command_print(cmd_ctx, "verify Capture-IR is %s", (jtag_verify_capture_ir) ? "enabled": "disabled");
2004
2005         return ERROR_OK;
2006 }