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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
  24 #include "log.h"
  25 #include "jtag.h"
  26 #include "bitbang.h"
  27 #include "../target/embeddedice.h"
  28
  29
  30 #include <cyg/hal/hal_io.h>             // low level i/o
  31 #include <cyg/hal/hal_diag.h>
  32
  33 #include <stdlib.h>
  34
  35 #define ZYLIN_VERSION "1.51"
  36 #define ZYLIN_DATE __DATE__
  37 #define ZYLIN_TIME __TIME__
  38 #define ZYLIN_OPENOCD "$Revision$"
  39 #define ZYLIN_OPENOCD_VERSION "Zylin JTAG ZY1000 " ZYLIN_VERSION " " ZYLIN_DATE " " ZYLIN_TIME
  40 const char *zylin_config_dir="/config/settings";
  41
  42 extern int jtag_error;
  43
  44 /* low level command set
  45  */
  46 int zy1000_read(void);
  47 static void zy1000_write(int tck, int tms, int tdi);
  48 void zy1000_reset(int trst, int srst);
  49
  50
  51 int zy1000_speed(int speed);
  52 int zy1000_register_commands(struct command_context_s *cmd_ctx);
  53 int zy1000_init(void);
  54 int zy1000_quit(void);
  55
  56 /* interface commands */
  57 int zy1000_handle_zy1000_port_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  58
  59 static int zy1000_khz(int khz, int *jtag_speed)
  60 {
  61         if (khz==0)
  62         {
  63                 *jtag_speed=0;
  64         }
  65         else
  66         {
  67                 *jtag_speed=64000/khz;
  68         }
  69         return ERROR_OK;
  70 }
  71
  72 static int zy1000_speed_div(int speed, int *khz)
  73 {
  74         if (speed==0)
  75         {
  76                 *khz = 0;
  77         }
  78         else
  79         {
  80                 *khz=64000/speed;
  81         }
  82
  83         return ERROR_OK;
  84 }
  85
  86 static bool readPowerDropout(void)
  87 {
  88         cyg_uint32 state;
  89         // sample and clear power dropout
  90         HAL_WRITE_UINT32(ZY1000_JTAG_BASE+0x10, 0x80);
  91         HAL_READ_UINT32(ZY1000_JTAG_BASE+0x10, state);
  92         bool powerDropout;
  93         powerDropout = (state & 0x80) != 0;
  94         return powerDropout;
  95 }
  96
  97
  98 static bool readSRST(void)
  99 {
 100         cyg_uint32 state;
 101         // sample and clear SRST sensing
 102         HAL_WRITE_UINT32(ZY1000_JTAG_BASE+0x10, 0x00000040);
 103         HAL_READ_UINT32(ZY1000_JTAG_BASE+0x10, state);
 104         bool srstAsserted;
 105         srstAsserted = (state & 0x40) != 0;
 106         return srstAsserted;
 107 }
 108
 109 static int zy1000_srst_asserted(int *srst_asserted)
 110 {
 111         *srst_asserted=readSRST();
 112         return ERROR_OK;
 113 }
 114
 115 static int zy1000_power_dropout(int *dropout)
 116 {
 117         *dropout=readPowerDropout();
 118         return ERROR_OK;
 119 }
 120
 121
 122 jtag_interface_t zy1000_interface =
 123 {
 124         .name = "ZY1000",
 125         .execute_queue = bitbang_execute_queue,
 126         .speed = zy1000_speed,
 127         .register_commands = zy1000_register_commands,
 128         .init = zy1000_init,
 129         .quit = zy1000_quit,
 130         .khz = zy1000_khz,
 131         .speed_div = zy1000_speed_div,
 132         .power_dropout = zy1000_power_dropout,
 133         .srst_asserted = zy1000_srst_asserted,
 134 };
 135
 136 bitbang_interface_t zy1000_bitbang =
 137 {
 138         .read = zy1000_read,
 139         .write = zy1000_write,
 140         .reset = zy1000_reset
 141 };
 142
 143
 144
 145 static void zy1000_write(int tck, int tms, int tdi)
 146 {
 147
 148 }
 149
 150 int zy1000_read(void)
 151 {
 152         return -1;
 153 }
 154
 155 extern bool readSRST(void);
 156
 157 void zy1000_reset(int trst, int srst)
 158 {
 159         LOG_DEBUG("zy1000 trst=%d, srst=%d", trst, srst);
 160         if(!srst)
 161         {
 162                 ZY1000_POKE(ZY1000_JTAG_BASE+0x14, 0x00000001);
 163         }
 164         else
 165         {
 166                 /* Danger!!! if clk!=0 when in
 167                  * idle in TAP_IDLE, reset halt on str912 will fail.
 168                  */
 169                 ZY1000_POKE(ZY1000_JTAG_BASE+0x10, 0x00000001);
 170         }
 171
 172         if(!trst)
 173         {
 174                 ZY1000_POKE(ZY1000_JTAG_BASE+0x14, 0x00000002);
 175         }
 176         else
 177         {
 178                 /* assert reset */
 179                 ZY1000_POKE(ZY1000_JTAG_BASE+0x10, 0x00000002);
 180         }
 181
 182         if (trst||(srst&&(jtag_reset_config & RESET_SRST_PULLS_TRST)))
 183         {
 184                 waitIdle();
 185                 /* we're now in the RESET state until trst is deasserted */
 186                 ZY1000_POKE(ZY1000_JTAG_BASE+0x20, TAP_RESET);
 187         } else
 188         {
 189                 /* We'll get RCLK failure when we assert TRST, so clear any false positives here */
 190                 ZY1000_POKE(ZY1000_JTAG_BASE+0x14, 0x400);
 191         }
 192
 193         /* wait for srst to float back up */
 194         if (!srst)
 195         {
 196                 int i;
 197                 for (i=0; i<1000; i++)
 198                 {
 199                         // We don't want to sense our own reset, so we clear here.
 200                         // There is of course a timing hole where we could loose
 201                         // a "real" reset.
 202                         if (!readSRST())
 203                                 break;
 204
 205                         /* wait 1ms */
 206                         alive_sleep(1);
 207                 }
 208
 209                 if (i==1000)
 210                 {
 211                         LOG_USER("SRST didn't deassert after %dms", i);
 212                 } else if (i>1)
 213                 {
 214                         LOG_USER("SRST took %dms to deassert", i);
 215                 }
 216         }
 217 }
 218
 219 int zy1000_speed(int speed)
 220 {
 221         if(speed == 0)
 222         {
 223                 /*0 means RCLK*/
 224                 speed = 0;
 225                 ZY1000_POKE(ZY1000_JTAG_BASE+0x10, 0x100);
 226                 LOG_DEBUG("jtag_speed using RCLK");
 227         }
 228         else
 229         {
 230                 if(speed > 8190 || speed < 2)
 231                 {
 232                         LOG_USER("valid ZY1000 jtag_speed=[8190,2]. Divisor is 64MHz / even values between 8190-2, i.e. min 7814Hz, max 32MHz");
 233                         return ERROR_INVALID_ARGUMENTS;
 234                 }
 235
 236                 LOG_USER("jtag_speed %d => JTAG clk=%f", speed, 64.0/(float)speed);
 237                 ZY1000_POKE(ZY1000_JTAG_BASE+0x14, 0x100);
 238                 ZY1000_POKE(ZY1000_JTAG_BASE+0x1c, speed&~1);
 239         }
 240         return ERROR_OK;
 241 }
 242
 243 static bool savePower;
 244
 245
 246 static void setPower(bool power)
 247 {
 248         savePower = power;
 249         if (power)
 250         {
 251                 HAL_WRITE_UINT32(ZY1000_JTAG_BASE+0x14, 0x8);
 252         } else
 253         {
 254                 HAL_WRITE_UINT32(ZY1000_JTAG_BASE+0x10, 0x8);
 255         }
 256 }
 257
 258 int handle_power_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
 259 {
 260         if (argc > 1)
 261         {
 262                 return ERROR_INVALID_ARGUMENTS;
 263         }
 264
 265         if (argc == 1)
 266         {
 267                 if (strcmp(args[0], "on") == 0)
 268                 {
 269                         setPower(1);
 270                 }
 271                 else if (strcmp(args[0], "off") == 0)
 272                 {
 273                         setPower(0);
 274                 } else
 275                 {
 276                         command_print(cmd_ctx, "arg is \"on\" or \"off\"");
 277                         return ERROR_INVALID_ARGUMENTS;
 278                 }
 279         }
 280
 281         command_print(cmd_ctx, "Target power %s", savePower ? "on" : "off");
 282
 283         return ERROR_OK;
 284 }
 285
 286
 287 /* Give TELNET a way to find out what version this is */
 288 static int jim_zy1000_version(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
 289 {
 290         if ((argc < 1) || (argc > 2))
 291                 return JIM_ERR;
 292         char buff[128];
 293         const char *version_str=NULL;
 294
 295         if (argc == 1)
 296         {
 297                 version_str=ZYLIN_OPENOCD_VERSION;
 298         } else
 299         {
 300                 const char *str = Jim_GetString(argv[1], NULL);
 301                 if (strcmp("openocd", str) == 0)
 302                 {
 303                         int revision;
 304                         revision = atol(ZYLIN_OPENOCD+strlen("XRevision: "));
 305                         sprintf(buff, "%d", revision);
 306                         version_str=buff;
 307                 }
 308                 else if (strcmp("zy1000", str) == 0)
 309                 {
 310                         version_str=ZYLIN_VERSION;
 311                 }
 312                 else if (strcmp("date", str) == 0)
 313                 {
 314                         version_str=ZYLIN_DATE;
 315                 }
 316                 else
 317                 {
 318                         return JIM_ERR;
 319                 }
 320         }
 321
 322         Jim_SetResult(interp, Jim_NewStringObj(interp, version_str, -1));
 323
 324         return JIM_OK;
 325 }
 326
 327
 328 static int
 329 zylinjtag_Jim_Command_powerstatus(Jim_Interp *interp,
 330                                                                    int argc,
 331                 Jim_Obj * const *argv)
 332 {
 333         if (argc != 1)
 334         {
 335                 Jim_WrongNumArgs(interp, 1, argv, "powerstatus");
 336                 return JIM_ERR;
 337         }
 338
 339         cyg_uint32 status;
 340         ZY1000_PEEK(ZY1000_JTAG_BASE+0x10, status);
 341
 342         Jim_SetResult(interp, Jim_NewIntObj(interp, (status&0x80)!=0));
 343
 344         return JIM_OK;
 345 }
 346
 347 int zy1000_register_commands(struct command_context_s *cmd_ctx)
 348 {
 349         register_command(cmd_ctx, NULL, "power", handle_power_command, COMMAND_ANY,
 350                         "power <on/off> - turn power switch to target on/off. No arguments - print status.");
 351
 352         Jim_CreateCommand(interp, "zy1000_version", jim_zy1000_version, NULL, NULL);
 353
 354
 355         Jim_CreateCommand(interp, "powerstatus", zylinjtag_Jim_Command_powerstatus, NULL, NULL);
 356
 357         return ERROR_OK;
 358 }
 359
 360
 361
 362
 363 int zy1000_init(void)
 364 {
 365         LOG_USER("%s", ZYLIN_OPENOCD_VERSION);
 366
 367         ZY1000_POKE(ZY1000_JTAG_BASE+0x10, 0x30); // Turn on LED1 & LED2
 368
 369         setPower(true); // on by default
 370
 371
 372          /* deassert resets. Important to avoid infinite loop waiting for SRST to deassert */
 373         zy1000_reset(0, 0);
 374         zy1000_speed(jtag_speed);
 375
 376         bitbang_interface = &zy1000_bitbang;
 377
 378         return ERROR_OK;
 379 }
 380
 381 int zy1000_quit(void)
 382 {
 383
 384         return ERROR_OK;
 385 }
 386
 387
 388
 389
 390 int interface_jtag_execute_queue(void)
 391 {
 392         cyg_uint32 empty;
 393
 394         waitIdle();
 395         ZY1000_PEEK(ZY1000_JTAG_BASE+0x10, empty);
 396         /* clear JTAG error register */
 397         ZY1000_POKE(ZY1000_JTAG_BASE+0x14, 0x400);
 398
 399         if ((empty&0x400)!=0)
 400         {
 401                 LOG_WARNING("RCLK timeout");
 402                 /* the error is informative only as we don't want to break the firmware if there
 403                  * is a false positive.
 404                  */
 405 //              return ERROR_FAIL;
 406         }
 407         return ERROR_OK;
 408 }
 409
 410
 411
 412
 413
 414 static cyg_uint32 getShiftValue(void)
 415 {
 416         cyg_uint32 value;
 417         waitIdle();
 418         ZY1000_PEEK(ZY1000_JTAG_BASE+0xc, value);
 419         VERBOSE(LOG_INFO("getShiftValue %08x", value));
 420         return value;
 421 }
 422 #if 0
 423 static cyg_uint32 getShiftValueFlip(void)
 424 {
 425         cyg_uint32 value;
 426         waitIdle();
 427         ZY1000_PEEK(ZY1000_JTAG_BASE+0x18, value);
 428         VERBOSE(LOG_INFO("getShiftValue %08x (flipped)", value));
 429         return value;
 430 }
 431 #endif
 432
 433 #if 0
 434 static void shiftValueInnerFlip(const tap_state_t state, const tap_state_t endState, int repeat, cyg_uint32 value)
 435 {
 436         VERBOSE(LOG_INFO("shiftValueInner %s %s %d %08x (flipped)", tap_state_name(state), tap_state_name(endState), repeat, value));
 437         cyg_uint32 a,b;
 438         a=state;
 439         b=endState;
 440         ZY1000_POKE(ZY1000_JTAG_BASE+0xc, value);
 441         ZY1000_POKE(ZY1000_JTAG_BASE+0x8, (1<<15)|(repeat<<8)|(a<<4)|b);
 442         VERBOSE(getShiftValueFlip());
 443 }
 444 #endif
 445
 446 extern int jtag_check_value(u8 *captured, void *priv);
 447
 448 static void gotoEndState(void)
 449 {
 450         setCurrentState(cmd_queue_end_state);
 451 }
 452
 453 static __inline void scanFields(int num_fields, scan_field_t *fields, tap_state_t shiftState, int pause)
 454 {
 455         int i;
 456         int j;
 457         int k;
 458
 459         for (i = 0; i < num_fields; i++)
 460         {
 461                 cyg_uint32 value;
 462
 463                 static u8 *in_buff=NULL; /* pointer to buffer for scanned data */
 464                 static int in_buff_size=0;
 465                 u8 *inBuffer=NULL;
 466
 467
 468                 // figure out where to store the input data
 469                 int num_bits=fields[i].num_bits;
 470                 if (fields[i].in_value!=NULL)
 471                 {
 472                         inBuffer=fields[i].in_value;
 473                 } else if (fields[i].in_handler!=NULL)
 474                 {
 475                         if (in_buff_size*8<num_bits)
 476                         {
 477                                 // we need more space
 478                                 if (in_buff!=NULL)
 479                                         free(in_buff);
 480                                 in_buff=NULL;
 481                                 in_buff_size=(num_bits+7)/8;
 482                                 in_buff=malloc(in_buff_size);
 483                                 if (in_buff==NULL)
 484                                 {
 485                                         LOG_ERROR("Out of memory");
 486                                         jtag_error=ERROR_JTAG_QUEUE_FAILED;
 487                                         return;
 488                                 }
 489                         }
 490                         inBuffer=in_buff;
 491                 }
 492
 493                 // here we shuffle N bits out/in
 494                 j=0;
 495                 while (j<num_bits)
 496                 {
 497                         tap_state_t pause_state;
 498                         int l;
 499                         k=num_bits-j;
 500                         pause_state=(shiftState==TAP_DRSHIFT)?TAP_DRSHIFT:TAP_IRSHIFT;
 501                         if (k>32)
 502                         {
 503                                 k=32;
 504                                 /* we have more to shift out */
 505                         } else if (pause&&(i == num_fields-1))
 506                         {
 507                                 /* this was the last to shift out this time */
 508                                 pause_state=(shiftState==TAP_DRSHIFT)?TAP_DRPAUSE:TAP_IRPAUSE;
 509                         }
 510
 511                         // we have (num_bits+7)/8 bytes of bits to toggle out.
 512                         // bits are pushed out LSB to MSB
 513                         value=0;
 514                         if (fields[i].out_value!=NULL)
 515                         {
 516                                 for (l=0; l<k; l+=8)
 517                                 {
 518                                         value|=fields[i].out_value[(j+l)/8]<<l;
 519                                 }
 520                         }
 521                         /* mask away unused bits for easier debugging */
 522                         value&=~(((u32)0xffffffff)<<k);
 523
 524                         shiftValueInner(shiftState, pause_state, k, value);
 525
 526                         if (inBuffer!=NULL)
 527                         {
 528                                 // data in, LSB to MSB
 529                                 value=getShiftValue();
 530                                 // we're shifting in data to MSB, shift data to be aligned for returning the value
 531                                 value >>= 32-k;
 532
 533                                 for (l=0; l<k; l+=8)
 534                                 {
 535                                         inBuffer[(j+l)/8]=(value>>l)&0xff;
 536                                 }
 537                         }
 538                         j+=k;
 539                 }
 540
 541                 if (fields[i].in_handler!=NULL)
 542                 {
 543                         // invoke callback
 544                         int r=fields[i].in_handler(inBuffer, fields[i].in_handler_priv, fields+i);
 545                         if (r!=ERROR_OK)
 546                         {
 547                                 /* this will cause jtag_execute_queue() to return an error */
 548                                 jtag_error=r;
 549                         }
 550                 }
 551         }
 552 }
 553
 554 int interface_jtag_add_end_state(tap_state_t state)
 555 {
 556         return ERROR_OK;
 557 }
 558
 559
 560 int interface_jtag_add_ir_scan(int num_fields, scan_field_t *fields, tap_state_t state)
 561 {
 562
 563         int j;
 564         int scan_size = 0;
 565         jtag_tap_t *tap, *nextTap;
 566         for(tap = jtag_NextEnabledTap(NULL); tap!= NULL; tap=nextTap)
 567         {
 568                 nextTap=jtag_NextEnabledTap(tap);
 569                 int pause=(nextTap==NULL);
 570
 571                 int found = 0;
 572
 573                 scan_size = tap->ir_length;
 574
 575                 /* search the list */
 576                 for (j=0; j < num_fields; j++)
 577                 {
 578                         if (tap == fields[j].tap)
 579                         {
 580                                 found = 1;
 581
 582                                 if ((jtag_verify_capture_ir)&&(fields[j].in_handler==NULL))
 583                                 {
 584                                         jtag_set_check_value(fields+j, tap->expected, tap->expected_mask, NULL);
 585                                 } else if (jtag_verify_capture_ir)
 586                                 {
 587                                         fields[j].in_check_value = tap->expected;
 588                                         fields[j].in_check_mask = tap->expected_mask;
 589                                 }
 590
 591                                 scanFields(1, fields+j, TAP_IRSHIFT, pause);
 592                                 /* update device information */
 593                                 buf_cpy(fields[j].out_value, tap->cur_instr, scan_size);
 594
 595                                 tap->bypass = 0;
 596                                 break;
 597                         }
 598                 }
 599
 600                 if (!found)
 601                 {
 602                         /* if a device isn't listed, set it to BYPASS */
 603                         u8 ones[]={0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff};
 604
 605                         scan_field_t tmp;
 606                         memset(&tmp, 0, sizeof(tmp));
 607                         tmp.out_value = ones;
 608                         tmp.num_bits = scan_size;
 609                         scanFields(1, &tmp, TAP_IRSHIFT, pause);
 610                         /* update device information */
 611                         buf_cpy(tmp.out_value, tap->cur_instr, scan_size);
 612                         tap->bypass = 1;
 613                 }
 614         }
 615         gotoEndState();
 616
 617         return ERROR_OK;
 618 }
 619
 620
 621
 622
 623
 624 int interface_jtag_add_plain_ir_scan(int num_fields, scan_field_t *fields, tap_state_t state)
 625 {
 626         scanFields(num_fields, fields, TAP_IRSHIFT, 1);
 627         gotoEndState();
 628
 629         return ERROR_OK;
 630 }
 631
 632 /*extern jtag_command_t **jtag_get_last_command_p(void);*/
 633
 634 int interface_jtag_add_dr_scan(int num_fields, scan_field_t *fields, tap_state_t state)
 635 {
 636
 637         int j;
 638         jtag_tap_t *tap, *nextTap;
 639         for(tap = jtag_NextEnabledTap(NULL); tap!= NULL; tap=nextTap)
 640         {
 641                 nextTap=jtag_NextEnabledTap(tap);
 642                 int found=0;
 643                 int pause=(nextTap==NULL);
 644
 645                 for (j=0; j < num_fields; j++)
 646                 {
 647                         if (tap == fields[j].tap)
 648                         {
 649                                 found = 1;
 650
 651                                 scanFields(1, fields+j, TAP_DRSHIFT, pause);
 652                         }
 653                 }
 654                 if (!found)
 655                 {
 656                         scan_field_t tmp;
 657                         /* program the scan field to 1 bit length, and ignore it's value */
 658                         tmp.num_bits = 1;
 659                         tmp.out_value = NULL;
 660                         tmp.in_value = NULL;
 661                         tmp.in_check_value = NULL;
 662                         tmp.in_check_mask = NULL;
 663                         tmp.in_handler = NULL;
 664                         tmp.in_handler_priv = NULL;
 665
 666                         scanFields(1, &tmp, TAP_DRSHIFT, pause);
 667                 }
 668                 else
 669                 {
 670                 }
 671         }
 672         gotoEndState();
 673         return ERROR_OK;
 674 }
 675
 676 int interface_jtag_add_plain_dr_scan(int num_fields, scan_field_t *fields, tap_state_t state)
 677 {
 678         scanFields(num_fields, fields, TAP_DRSHIFT, 1);
 679         gotoEndState();
 680         return ERROR_OK;
 681 }
 682
 683
 684 int interface_jtag_add_tlr()
 685 {
 686         setCurrentState(TAP_RESET);
 687         return ERROR_OK;
 688 }
 689
 690
 691
 692
 693 extern int jtag_nsrst_delay;
 694 extern int jtag_ntrst_delay;
 695
 696 int interface_jtag_add_reset(int req_trst, int req_srst)
 697 {
 698         zy1000_reset(req_trst, req_srst);
 699         return ERROR_OK;
 700 }
 701
 702 static int zy1000_jtag_add_clocks(int num_cycles, tap_state_t state, tap_state_t clockstate)
 703 {
 704         /* num_cycles can be 0 */
 705         setCurrentState(clockstate);
 706
 707         /* execute num_cycles, 32 at the time. */
 708         int i;
 709         for (i=0; i<num_cycles; i+=32)
 710         {
 711                 int num;
 712                 num=32;
 713                 if (num_cycles-i<num)
 714                 {
 715                         num=num_cycles-i;
 716                 }
 717                 shiftValueInner(clockstate, clockstate, num, 0);
 718         }
 719
 720 #if !TEST_MANUAL()
 721         /* finish in end_state */
 722         setCurrentState(state);
 723 #else
 724         tap_state_t t=TAP_IDLE;
 725         /* test manual drive code on any target */
 726         int tms;
 727         u8 tms_scan = tap_get_tms_path(t, state);
 728
 729         for (i = 0; i < 7; i++)
 730         {
 731                 tms = (tms_scan >> i) & 1;
 732                 waitIdle();
 733                 ZY1000_POKE(ZY1000_JTAG_BASE+0x28,  tms);
 734         }
 735         waitIdle();
 736         ZY1000_POKE(ZY1000_JTAG_BASE+0x20, state);
 737 #endif
 738
 739
 740         return ERROR_OK;
 741 }
 742
 743 int interface_jtag_add_runtest(int num_cycles, tap_state_t state)
 744 {
 745         return zy1000_jtag_add_clocks(num_cycles, state, TAP_IDLE);
 746 }
 747
 748 int interface_jtag_add_clocks(int num_cycles)
 749 {
 750         return zy1000_jtag_add_clocks(num_cycles, cmd_queue_cur_state, cmd_queue_end_state);
 751 }
 752
 753 int interface_jtag_add_sleep(u32 us)
 754 {
 755         jtag_sleep(us);
 756         return ERROR_OK;
 757 }
 758
 759 int interface_jtag_add_pathmove(int num_states, tap_state_t *path)
 760 {
 761         int state_count;
 762         int tms = 0;
 763
 764         /*wait for the fifo to be empty*/
 765         waitIdle();
 766
 767         state_count = 0;
 768
 769         tap_state_t cur_state=cmd_queue_cur_state;
 770
 771         while (num_states)
 772         {
 773                 if (tap_state_transition(cur_state, false) == path[state_count])
 774                 {
 775                         tms = 0;
 776                 }
 777                 else if (tap_state_transition(cur_state, true) == path[state_count])
 778                 {
 779                         tms = 1;
 780                 }
 781                 else
 782                 {
 783                         LOG_ERROR("BUG: %s -> %s isn't a valid TAP transition", tap_state_name(cur_state), tap_state_name(path[state_count]));
 784                         exit(-1);
 785                 }
 786
 787                 waitIdle();
 788                 ZY1000_POKE(ZY1000_JTAG_BASE+0x28,  tms);
 789
 790                 cur_state = path[state_count];
 791                 state_count++;
 792                 num_states--;
 793         }
 794
 795         waitIdle();
 796         ZY1000_POKE(ZY1000_JTAG_BASE+0x20,  cur_state);
 797         return ERROR_OK;
 798 }
 799
 800
 801
 802 void embeddedice_write_dcc(jtag_tap_t *tap, int reg_addr, u8 *buffer, int little, int count)
 803 {
 804 //      static int const reg_addr=0x5;
 805         tap_state_t end_state=cmd_queue_end_state;
 806         if (jtag_NextEnabledTap(jtag_NextEnabledTap(NULL))==NULL)
 807         {
 808                 /* better performance via code duplication */
 809                 if (little)
 810                 {
 811                         int i;
 812                         for (i = 0; i < count; i++)
 813                         {
 814                                 shiftValueInner(TAP_DRSHIFT, TAP_DRSHIFT, 32, fast_target_buffer_get_u32(buffer, 1));
 815                                 shiftValueInner(TAP_DRSHIFT, end_state, 6, reg_addr|(1<<5));
 816                                 buffer+=4;
 817                         }
 818                 } else
 819                 {
 820                         int i;
 821                         for (i = 0; i < count; i++)
 822                         {
 823                                 shiftValueInner(TAP_DRSHIFT, TAP_DRSHIFT, 32, fast_target_buffer_get_u32(buffer, 0));
 824                                 shiftValueInner(TAP_DRSHIFT, end_state, 6, reg_addr|(1<<5));
 825                                 buffer+=4;
 826                         }
 827                 }
 828         }
 829         else
 830         {
 831                 int i;
 832                 for (i = 0; i < count; i++)
 833                 {
 834                         embeddedice_write_reg_inner(tap, reg_addr, fast_target_buffer_get_u32(buffer, little));
 835                         buffer += 4;
 836                 }
 837         }
 838 }
 839
 840 int loadFile(const char *fileName, void **data, int *len);
 841
 842 /* boolean parameter stored on config */
 843 int boolParam(char *var)
 844 {
 845         bool result = false;
 846         char *name = alloc_printf("%s/%s", zylin_config_dir, var);
 847         if (name == NULL)
 848                 return result;
 849
 850         void *data;
 851         int len;
 852         if (loadFile(name, &data, &len) == ERROR_OK)
 853         {
 854                 if (len > 1)
 855                         len = 1;
 856                 result = strncmp((char *) data, "1", len) == 0;
 857                 free(data);
 858         }
 859         free(name);
 860         return result;
 861 }
 862
 863