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   1 /***************************************************************************
   2  *   Copyright (C) 2007-2008 by Øyvind Harboe                              *
   3  *                                                                         *
   4  *   This program is free software; you can redistribute it and/or modify  *
   5  *   it under the terms of the GNU General Public License as published by  *
   6  *   the Free Software Foundation; either version 2 of the License, or     *
   7  *   (at your option) any later version.                                   *
   8  *                                                                         *
   9  *   This program is distributed in the hope that it will be useful,       *
  10  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  11  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  12  *   GNU General Public License for more details.                          *
  13  *                                                                         *
  14  *   You should have received a copy of the GNU General Public License     *
  15  *   along with this program; if not, write to the                         *
  16  *   Free Software Foundation, Inc.,                                       *
  17  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
  18  ***************************************************************************/
  19 #ifdef HAVE_CONFIG_H
  20 #include "config.h"
  21 #endif
  22
  23 #include "embeddedice.h"
  24 #include "minidriver.h"
  25 #include "interface.h"
  26
  27 #include <cyg/hal/hal_io.h>             // low level i/o
  28 #include <cyg/hal/hal_diag.h>
  29
  30
  31 #define ZYLIN_VERSION "1.52"
  32 #define ZYLIN_DATE __DATE__
  33 #define ZYLIN_TIME __TIME__
  34 #define ZYLIN_OPENOCD "$Revision$"
  35 #define ZYLIN_OPENOCD_VERSION "Zylin JTAG ZY1000 " ZYLIN_VERSION " " ZYLIN_DATE " " ZYLIN_TIME
  36 const char *zylin_config_dir="/config/settings";
  37
  38 /* low level command set
  39  */
  40 int zy1000_read(void);
  41 static void zy1000_write(int tck, int tms, int tdi);
  42 void zy1000_reset(int trst, int srst);
  43
  44
  45 int zy1000_speed(int speed);
  46 int zy1000_register_commands(struct command_context_s *cmd_ctx);
  47 int zy1000_init(void);
  48 int zy1000_quit(void);
  49
  50 /* interface commands */
  51 int zy1000_handle_zy1000_port_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  52
  53 static int zy1000_khz(int khz, int *jtag_speed)
  54 {
  55         if (khz==0)
  56         {
  57                 *jtag_speed=0;
  58         }
  59         else
  60         {
  61                 *jtag_speed=64000/khz;
  62         }
  63         return ERROR_OK;
  64 }
  65
  66 static int zy1000_speed_div(int speed, int *khz)
  67 {
  68         if (speed==0)
  69         {
  70                 *khz = 0;
  71         }
  72         else
  73         {
  74                 *khz=64000/speed;
  75         }
  76
  77         return ERROR_OK;
  78 }
  79
  80 static bool readPowerDropout(void)
  81 {
  82         cyg_uint32 state;
  83         // sample and clear power dropout
  84         HAL_WRITE_UINT32(ZY1000_JTAG_BASE+0x10, 0x80);
  85         HAL_READ_UINT32(ZY1000_JTAG_BASE+0x10, state);
  86         bool powerDropout;
  87         powerDropout = (state & 0x80) != 0;
  88         return powerDropout;
  89 }
  90
  91
  92 static bool readSRST(void)
  93 {
  94         cyg_uint32 state;
  95         // sample and clear SRST sensing
  96         HAL_WRITE_UINT32(ZY1000_JTAG_BASE+0x10, 0x00000040);
  97         HAL_READ_UINT32(ZY1000_JTAG_BASE+0x10, state);
  98         bool srstAsserted;
  99         srstAsserted = (state & 0x40) != 0;
 100         return srstAsserted;
 101 }
 102
 103 static int zy1000_srst_asserted(int *srst_asserted)
 104 {
 105         *srst_asserted=readSRST();
 106         return ERROR_OK;
 107 }
 108
 109 static int zy1000_power_dropout(int *dropout)
 110 {
 111         *dropout=readPowerDropout();
 112         return ERROR_OK;
 113 }
 114
 115
 116 jtag_interface_t zy1000_interface =
 117 {
 118         .name = "ZY1000",
 119         .execute_queue = NULL,
 120         .speed = zy1000_speed,
 121         .register_commands = zy1000_register_commands,
 122         .init = zy1000_init,
 123         .quit = zy1000_quit,
 124         .khz = zy1000_khz,
 125         .speed_div = zy1000_speed_div,
 126         .power_dropout = zy1000_power_dropout,
 127         .srst_asserted = zy1000_srst_asserted,
 128 };
 129
 130 static void zy1000_write(int tck, int tms, int tdi)
 131 {
 132
 133 }
 134
 135 int zy1000_read(void)
 136 {
 137         return -1;
 138 }
 139
 140 extern bool readSRST(void);
 141
 142 void zy1000_reset(int trst, int srst)
 143 {
 144         LOG_DEBUG("zy1000 trst=%d, srst=%d", trst, srst);
 145         if(!srst)
 146         {
 147                 ZY1000_POKE(ZY1000_JTAG_BASE+0x14, 0x00000001);
 148         }
 149         else
 150         {
 151                 /* Danger!!! if clk!=0 when in
 152                  * idle in TAP_IDLE, reset halt on str912 will fail.
 153                  */
 154                 ZY1000_POKE(ZY1000_JTAG_BASE+0x10, 0x00000001);
 155         }
 156
 157         if(!trst)
 158         {
 159                 ZY1000_POKE(ZY1000_JTAG_BASE+0x14, 0x00000002);
 160         }
 161         else
 162         {
 163                 /* assert reset */
 164                 ZY1000_POKE(ZY1000_JTAG_BASE+0x10, 0x00000002);
 165         }
 166
 167         if (trst||(srst&&(jtag_reset_config & RESET_SRST_PULLS_TRST)))
 168         {
 169                 waitIdle();
 170                 /* we're now in the RESET state until trst is deasserted */
 171                 ZY1000_POKE(ZY1000_JTAG_BASE+0x20, TAP_RESET);
 172         } else
 173         {
 174                 /* We'll get RCLK failure when we assert TRST, so clear any false positives here */
 175                 ZY1000_POKE(ZY1000_JTAG_BASE+0x14, 0x400);
 176         }
 177
 178         /* wait for srst to float back up */
 179         if (!srst)
 180         {
 181                 int i;
 182                 for (i=0; i<1000; i++)
 183                 {
 184                         // We don't want to sense our own reset, so we clear here.
 185                         // There is of course a timing hole where we could loose
 186                         // a "real" reset.
 187                         if (!readSRST())
 188                                 break;
 189
 190                         /* wait 1ms */
 191                         alive_sleep(1);
 192                 }
 193
 194                 if (i==1000)
 195                 {
 196                         LOG_USER("SRST didn't deassert after %dms", i);
 197                 } else if (i>1)
 198                 {
 199                         LOG_USER("SRST took %dms to deassert", i);
 200                 }
 201         }
 202 }
 203
 204 int zy1000_speed(int speed)
 205 {
 206         if(speed == 0)
 207         {
 208                 /*0 means RCLK*/
 209                 speed = 0;
 210                 ZY1000_POKE(ZY1000_JTAG_BASE+0x10, 0x100);
 211                 LOG_DEBUG("jtag_speed using RCLK");
 212         }
 213         else
 214         {
 215                 if(speed > 8190 || speed < 2)
 216                 {
 217                         LOG_USER("valid ZY1000 jtag_speed=[8190,2]. Divisor is 64MHz / even values between 8190-2, i.e. min 7814Hz, max 32MHz");
 218                         return ERROR_INVALID_ARGUMENTS;
 219                 }
 220
 221                 LOG_USER("jtag_speed %d => JTAG clk=%f", speed, 64.0/(float)speed);
 222                 ZY1000_POKE(ZY1000_JTAG_BASE+0x14, 0x100);
 223                 ZY1000_POKE(ZY1000_JTAG_BASE+0x1c, speed&~1);
 224         }
 225         return ERROR_OK;
 226 }
 227
 228 static bool savePower;
 229
 230
 231 static void setPower(bool power)
 232 {
 233         savePower = power;
 234         if (power)
 235         {
 236                 HAL_WRITE_UINT32(ZY1000_JTAG_BASE+0x14, 0x8);
 237         } else
 238         {
 239                 HAL_WRITE_UINT32(ZY1000_JTAG_BASE+0x10, 0x8);
 240         }
 241 }
 242
 243 int handle_power_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
 244 {
 245         if (argc > 1)
 246         {
 247                 return ERROR_INVALID_ARGUMENTS;
 248         }
 249
 250         if (argc == 1)
 251         {
 252                 if (strcmp(args[0], "on") == 0)
 253                 {
 254                         setPower(1);
 255                 }
 256                 else if (strcmp(args[0], "off") == 0)
 257                 {
 258                         setPower(0);
 259                 } else
 260                 {
 261                         command_print(cmd_ctx, "arg is \"on\" or \"off\"");
 262                         return ERROR_INVALID_ARGUMENTS;
 263                 }
 264         }
 265
 266         command_print(cmd_ctx, "Target power %s", savePower ? "on" : "off");
 267
 268         return ERROR_OK;
 269 }
 270
 271
 272 /* Give TELNET a way to find out what version this is */
 273 static int jim_zy1000_version(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
 274 {
 275         if ((argc < 1) || (argc > 2))
 276                 return JIM_ERR;
 277         char buff[128];
 278         const char *version_str=NULL;
 279
 280         if (argc == 1)
 281         {
 282                 version_str=ZYLIN_OPENOCD_VERSION;
 283         } else
 284         {
 285                 const char *str = Jim_GetString(argv[1], NULL);
 286                 if (strcmp("openocd", str) == 0)
 287                 {
 288                         int revision;
 289                         revision = atol(ZYLIN_OPENOCD+strlen("XRevision: "));
 290                         sprintf(buff, "%d", revision);
 291                         version_str=buff;
 292                 }
 293                 else if (strcmp("zy1000", str) == 0)
 294                 {
 295                         version_str=ZYLIN_VERSION;
 296                 }
 297                 else if (strcmp("date", str) == 0)
 298                 {
 299                         version_str=ZYLIN_DATE;
 300                 }
 301                 else
 302                 {
 303                         return JIM_ERR;
 304                 }
 305         }
 306
 307         Jim_SetResult(interp, Jim_NewStringObj(interp, version_str, -1));
 308
 309         return JIM_OK;
 310 }
 311
 312
 313 static int
 314 zylinjtag_Jim_Command_powerstatus(Jim_Interp *interp,
 315                                                                    int argc,
 316                 Jim_Obj * const *argv)
 317 {
 318         if (argc != 1)
 319         {
 320                 Jim_WrongNumArgs(interp, 1, argv, "powerstatus");
 321                 return JIM_ERR;
 322         }
 323
 324         cyg_uint32 status;
 325         ZY1000_PEEK(ZY1000_JTAG_BASE+0x10, status);
 326
 327         Jim_SetResult(interp, Jim_NewIntObj(interp, (status&0x80)!=0));
 328
 329         return JIM_OK;
 330 }
 331
 332 int zy1000_register_commands(struct command_context_s *cmd_ctx)
 333 {
 334         register_command(cmd_ctx, NULL, "power", handle_power_command, COMMAND_ANY,
 335                         "power <on/off> - turn power switch to target on/off. No arguments - print status.");
 336
 337         Jim_CreateCommand(interp, "zy1000_version", jim_zy1000_version, NULL, NULL);
 338
 339
 340         Jim_CreateCommand(interp, "powerstatus", zylinjtag_Jim_Command_powerstatus, NULL, NULL);
 341
 342         return ERROR_OK;
 343 }
 344
 345
 346
 347
 348 int zy1000_init(void)
 349 {
 350         LOG_USER("%s", ZYLIN_OPENOCD_VERSION);
 351
 352         ZY1000_POKE(ZY1000_JTAG_BASE+0x10, 0x30); // Turn on LED1 & LED2
 353
 354         setPower(true); // on by default
 355
 356
 357          /* deassert resets. Important to avoid infinite loop waiting for SRST to deassert */
 358         zy1000_reset(0, 0);
 359         zy1000_speed(jtag_speed);
 360
 361         return ERROR_OK;
 362 }
 363
 364 int zy1000_quit(void)
 365 {
 366
 367         return ERROR_OK;
 368 }
 369
 370
 371
 372 int interface_jtag_execute_queue(void)
 373 {
 374         cyg_uint32 empty;
 375
 376         waitIdle();
 377         ZY1000_PEEK(ZY1000_JTAG_BASE+0x10, empty);
 378         /* clear JTAG error register */
 379         ZY1000_POKE(ZY1000_JTAG_BASE+0x14, 0x400);
 380
 381         if ((empty&0x400)!=0)
 382         {
 383                 LOG_WARNING("RCLK timeout");
 384                 /* the error is informative only as we don't want to break the firmware if there
 385                  * is a false positive.
 386                  */
 387 //              return ERROR_FAIL;
 388         }
 389         return ERROR_OK;
 390 }
 391
 392
 393
 394
 395
 396 static cyg_uint32 getShiftValue(void)
 397 {
 398         cyg_uint32 value;
 399         waitIdle();
 400         ZY1000_PEEK(ZY1000_JTAG_BASE+0xc, value);
 401         VERBOSE(LOG_INFO("getShiftValue %08x", value));
 402         return value;
 403 }
 404 #if 0
 405 static cyg_uint32 getShiftValueFlip(void)
 406 {
 407         cyg_uint32 value;
 408         waitIdle();
 409         ZY1000_PEEK(ZY1000_JTAG_BASE+0x18, value);
 410         VERBOSE(LOG_INFO("getShiftValue %08x (flipped)", value));
 411         return value;
 412 }
 413 #endif
 414
 415 #if 0
 416 static void shiftValueInnerFlip(const tap_state_t state, const tap_state_t endState, int repeat, cyg_uint32 value)
 417 {
 418         VERBOSE(LOG_INFO("shiftValueInner %s %s %d %08x (flipped)", tap_state_name(state), tap_state_name(endState), repeat, value));
 419         cyg_uint32 a,b;
 420         a=state;
 421         b=endState;
 422         ZY1000_POKE(ZY1000_JTAG_BASE+0xc, value);
 423         ZY1000_POKE(ZY1000_JTAG_BASE+0x8, (1<<15)|(repeat<<8)|(a<<4)|b);
 424         VERBOSE(getShiftValueFlip());
 425 }
 426 #endif
 427
 428 extern int jtag_check_value(u8 *captured, void *priv);
 429
 430 static void gotoEndState(void)
 431 {
 432         setCurrentState(cmd_queue_end_state);
 433 }
 434
 435 static __inline void scanFields(int num_fields, scan_field_t *fields, tap_state_t shiftState, tap_state_t end_state)
 436 {
 437         int i;
 438         int j;
 439         int k;
 440
 441         for (i = 0; i < num_fields; i++)
 442         {
 443                 cyg_uint32 value;
 444
 445                 static u8 *in_buff=NULL; /* pointer to buffer for scanned data */
 446                 static int in_buff_size=0;
 447                 u8 *inBuffer=NULL;
 448
 449
 450                 // figure out where to store the input data
 451                 int num_bits=fields[i].num_bits;
 452                 if (fields[i].in_value!=NULL)
 453                 {
 454                         inBuffer=fields[i].in_value;
 455                 }
 456
 457                 // here we shuffle N bits out/in
 458                 j=0;
 459                 while (j<num_bits)
 460                 {
 461                         tap_state_t pause_state;
 462                         int l;
 463                         k=num_bits-j;
 464                         pause_state=(shiftState==TAP_DRSHIFT)?TAP_DRSHIFT:TAP_IRSHIFT;
 465                         if (k>32)
 466                         {
 467                                 k=32;
 468                                 /* we have more to shift out */
 469                         } else if (i == num_fields-1)
 470                         {
 471                                 /* this was the last to shift out this time */
 472                                 pause_state=end_state;
 473                         }
 474
 475                         // we have (num_bits+7)/8 bytes of bits to toggle out.
 476                         // bits are pushed out LSB to MSB
 477                         value=0;
 478                         if (fields[i].out_value!=NULL)
 479                         {
 480                                 for (l=0; l<k; l+=8)
 481                                 {
 482                                         value|=fields[i].out_value[(j+l)/8]<<l;
 483                                 }
 484                         }
 485                         /* mask away unused bits for easier debugging */
 486                         value&=~(((u32)0xffffffff)<<k);
 487
 488                         shiftValueInner(shiftState, pause_state, k, value);
 489
 490                         if (inBuffer!=NULL)
 491                         {
 492                                 // data in, LSB to MSB
 493                                 value=getShiftValue();
 494                                 // we're shifting in data to MSB, shift data to be aligned for returning the value
 495                                 value >>= 32-k;
 496
 497                                 for (l=0; l<k; l+=8)
 498                                 {
 499                                         inBuffer[(j+l)/8]=(value>>l)&0xff;
 500                                 }
 501                         }
 502                         j+=k;
 503                 }
 504         }
 505 }
 506
 507 int interface_jtag_add_end_state(tap_state_t state)
 508 {
 509         return ERROR_OK;
 510 }
 511
 512
 513 int interface_jtag_add_ir_scan(int num_fields, const scan_field_t *fields, tap_state_t state)
 514 {
 515
 516         int j;
 517         int scan_size = 0;
 518         jtag_tap_t *tap, *nextTap;
 519         for(tap = jtag_NextEnabledTap(NULL); tap!= NULL; tap=nextTap)
 520         {
 521                 nextTap=jtag_NextEnabledTap(tap);
 522                 tap_state_t end_state;
 523                 if (nextTap==NULL)
 524                 {
 525                         end_state = cmd_queue_end_state;
 526                 } else
 527                 {
 528                         end_state = TAP_IRSHIFT;
 529                 }
 530
 531                 int found = 0;
 532
 533                 scan_size = tap->ir_length;
 534
 535                 /* search the list */
 536                 for (j=0; j < num_fields; j++)
 537                 {
 538                         if (tap == fields[j].tap)
 539                         {
 540                                 found = 1;
 541
 542                                 scanFields(1, fields+j, TAP_IRSHIFT, end_state);
 543                                 /* update device information */
 544                                 buf_cpy(fields[j].out_value, tap->cur_instr, scan_size);
 545
 546                                 tap->bypass = 0;
 547                                 break;
 548                         }
 549                 }
 550
 551                 if (!found)
 552                 {
 553                         /* if a device isn't listed, set it to BYPASS */
 554                         u8 ones[]={0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff};
 555
 556                         scan_field_t tmp;
 557                         memset(&tmp, 0, sizeof(tmp));
 558                         tmp.out_value = ones;
 559                         tmp.num_bits = scan_size;
 560                         scanFields(1, &tmp, TAP_IRSHIFT, end_state);
 561                         /* update device information */
 562                         buf_cpy(tmp.out_value, tap->cur_instr, scan_size);
 563                         tap->bypass = 1;
 564                 }
 565         }
 566
 567         return ERROR_OK;
 568 }
 569
 570
 571
 572
 573
 574 int interface_jtag_add_plain_ir_scan(int num_fields, const scan_field_t *fields, tap_state_t state)
 575 {
 576         scanFields(num_fields, fields, TAP_IRSHIFT, cmd_queue_end_state);
 577
 578         return ERROR_OK;
 579 }
 580
 581 /*extern jtag_command_t **jtag_get_last_command_p(void);*/
 582
 583 int interface_jtag_add_dr_scan(int num_fields, const scan_field_t *fields, tap_state_t state)
 584 {
 585
 586         int j;
 587         jtag_tap_t *tap, *nextTap;
 588         for(tap = jtag_NextEnabledTap(NULL); tap!= NULL; tap=nextTap)
 589         {
 590                 nextTap=jtag_NextEnabledTap(tap);
 591                 int found=0;
 592                 tap_state_t end_state;
 593                 if (nextTap==NULL)
 594                 {
 595                         end_state = cmd_queue_end_state;
 596                 } else
 597                 {
 598                         end_state = TAP_DRSHIFT;
 599                 }
 600
 601                 for (j=0; j < num_fields; j++)
 602                 {
 603                         if (tap == fields[j].tap)
 604                         {
 605                                 found = 1;
 606
 607                                 scanFields(1, fields+j, TAP_DRSHIFT, end_state);
 608                         }
 609                 }
 610                 if (!found)
 611                 {
 612                         scan_field_t tmp;
 613                         /* program the scan field to 1 bit length, and ignore it's value */
 614                         tmp.num_bits = 1;
 615                         tmp.out_value = NULL;
 616                         tmp.in_value = NULL;
 617
 618                         scanFields(1, &tmp, TAP_DRSHIFT, end_state);
 619                 }
 620                 else
 621                 {
 622                 }
 623         }
 624         return ERROR_OK;
 625 }
 626
 627 int interface_jtag_add_plain_dr_scan(int num_fields, const scan_field_t *fields, tap_state_t state)
 628 {
 629         scanFields(num_fields, fields, TAP_DRSHIFT, cmd_queue_end_state);
 630         return ERROR_OK;
 631 }
 632
 633
 634 int interface_jtag_add_tlr()
 635 {
 636         setCurrentState(TAP_RESET);
 637         return ERROR_OK;
 638 }
 639
 640
 641
 642
 643 extern int jtag_nsrst_delay;
 644 extern int jtag_ntrst_delay;
 645
 646 int interface_jtag_add_reset(int req_trst, int req_srst)
 647 {
 648         zy1000_reset(req_trst, req_srst);
 649         return ERROR_OK;
 650 }
 651
 652 static int zy1000_jtag_add_clocks(int num_cycles, tap_state_t state, tap_state_t clockstate)
 653 {
 654         /* num_cycles can be 0 */
 655         setCurrentState(clockstate);
 656
 657         /* execute num_cycles, 32 at the time. */
 658         int i;
 659         for (i=0; i<num_cycles; i+=32)
 660         {
 661                 int num;
 662                 num=32;
 663                 if (num_cycles-i<num)
 664                 {
 665                         num=num_cycles-i;
 666                 }
 667                 shiftValueInner(clockstate, clockstate, num, 0);
 668         }
 669
 670 #if !TEST_MANUAL()
 671         /* finish in end_state */
 672         setCurrentState(state);
 673 #else
 674         tap_state_t t=TAP_IDLE;
 675         /* test manual drive code on any target */
 676         int tms;
 677         u8 tms_scan = tap_get_tms_path(t, state);
 678         int tms_count = tap_get_tms_path_len(tap_get_state(), tap_get_end_state());
 679
 680         for (i = 0; i < tms_count; i++)
 681         {
 682                 tms = (tms_scan >> i) & 1;
 683                 waitIdle();
 684                 ZY1000_POKE(ZY1000_JTAG_BASE+0x28,  tms);
 685         }
 686         waitIdle();
 687         ZY1000_POKE(ZY1000_JTAG_BASE+0x20, state);
 688 #endif
 689
 690
 691         return ERROR_OK;
 692 }
 693
 694 int interface_jtag_add_runtest(int num_cycles, tap_state_t state)
 695 {
 696         return zy1000_jtag_add_clocks(num_cycles, state, TAP_IDLE);
 697 }
 698
 699 int interface_jtag_add_clocks(int num_cycles)
 700 {
 701         return zy1000_jtag_add_clocks(num_cycles, cmd_queue_cur_state, cmd_queue_end_state);
 702 }
 703
 704 int interface_jtag_add_sleep(u32 us)
 705 {
 706         jtag_sleep(us);
 707         return ERROR_OK;
 708 }
 709
 710 int interface_jtag_add_pathmove(int num_states, const tap_state_t *path)
 711 {
 712         int state_count;
 713         int tms = 0;
 714
 715         /*wait for the fifo to be empty*/
 716         waitIdle();
 717
 718         state_count = 0;
 719
 720         tap_state_t cur_state=cmd_queue_cur_state;
 721
 722         while (num_states)
 723         {
 724                 if (tap_state_transition(cur_state, false) == path[state_count])
 725                 {
 726                         tms = 0;
 727                 }
 728                 else if (tap_state_transition(cur_state, true) == path[state_count])
 729                 {
 730                         tms = 1;
 731                 }
 732                 else
 733                 {
 734                         LOG_ERROR("BUG: %s -> %s isn't a valid TAP transition", tap_state_name(cur_state), tap_state_name(path[state_count]));
 735                         exit(-1);
 736                 }
 737
 738                 waitIdle();
 739                 ZY1000_POKE(ZY1000_JTAG_BASE+0x28,  tms);
 740
 741                 cur_state = path[state_count];
 742                 state_count++;
 743                 num_states--;
 744         }
 745
 746         waitIdle();
 747         ZY1000_POKE(ZY1000_JTAG_BASE+0x20,  cur_state);
 748         return ERROR_OK;
 749 }
 750
 751
 752
 753 void embeddedice_write_dcc(jtag_tap_t *tap, int reg_addr, u8 *buffer, int little, int count)
 754 {
 755 //      static int const reg_addr=0x5;
 756         tap_state_t end_state=cmd_queue_end_state;
 757         if (jtag_NextEnabledTap(jtag_NextEnabledTap(NULL))==NULL)
 758         {
 759                 /* better performance via code duplication */
 760                 if (little)
 761                 {
 762                         int i;
 763                         for (i = 0; i < count; i++)
 764                         {
 765                                 shiftValueInner(TAP_DRSHIFT, TAP_DRSHIFT, 32, fast_target_buffer_get_u32(buffer, 1));
 766                                 shiftValueInner(TAP_DRSHIFT, end_state, 6, reg_addr|(1<<5));
 767                                 buffer+=4;
 768                         }
 769                 } else
 770                 {
 771                         int i;
 772                         for (i = 0; i < count; i++)
 773                         {
 774                                 shiftValueInner(TAP_DRSHIFT, TAP_DRSHIFT, 32, fast_target_buffer_get_u32(buffer, 0));
 775                                 shiftValueInner(TAP_DRSHIFT, end_state, 6, reg_addr|(1<<5));
 776                                 buffer+=4;
 777                         }
 778                 }
 779         }
 780         else
 781         {
 782                 int i;
 783                 for (i = 0; i < count; i++)
 784                 {
 785                         embeddedice_write_reg_inner(tap, reg_addr, fast_target_buffer_get_u32(buffer, little));
 786                         buffer += 4;
 787                 }
 788         }
 789 }
 790
 791 int loadFile(const char *fileName, void **data, int *len);
 792
 793 /* boolean parameter stored on config */
 794 int boolParam(char *var)
 795 {
 796         bool result = false;
 797         char *name = alloc_printf("%s/%s", zylin_config_dir, var);
 798         if (name == NULL)
 799                 return result;
 800
 801         void *data;
 802         int len;
 803         if (loadFile(name, &data, &len) == ERROR_OK)
 804         {
 805                 if (len > 1)
 806                         len = 1;
 807                 result = strncmp((char *) data, "1", len) == 0;
 808                 free(data);
 809         }
 810         free(name);
 811         return result;
 812 }
 813
 814