git.sur5r.net Git - openocd/blob - src/jtag/zy1000/zy1000.c

   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 #include "zy1000_version.h"
  27
  28 #include <cyg/hal/hal_io.h>             // low level i/o
  29 #include <cyg/hal/hal_diag.h>
  30
  31 #include <time.h>
  32
  33 #define ZYLIN_VERSION GIT_ZY1000_VERSION
  34 #define ZYLIN_DATE __DATE__
  35 #define ZYLIN_TIME __TIME__
  36 #define ZYLIN_OPENOCD GIT_OPENOCD_VERSION
  37 #define ZYLIN_OPENOCD_VERSION "ZY1000 " ZYLIN_VERSION " " ZYLIN_DATE
  38
  39 /* low level command set
  40  */
  41 void zy1000_reset(int trst, int srst);
  42
  43
  44 int zy1000_speed(int speed);
  45 int zy1000_register_commands(struct command_context *cmd_ctx);
  46 int zy1000_init(void);
  47 int zy1000_quit(void);
  48
  49 /* interface commands */
  50 int zy1000_handle_zy1000_port_command(struct command_context *cmd_ctx, char *cmd, char **args, int argc);
  51
  52 static int zy1000_khz(int khz, int *jtag_speed)
  53 {
  54         if (khz == 0)
  55         {
  56                 *jtag_speed = 0;
  57         }
  58         else
  59         {
  60                 *jtag_speed = 64000/khz;
  61         }
  62         return ERROR_OK;
  63 }
  64
  65 static int zy1000_speed_div(int speed, int *khz)
  66 {
  67         if (speed == 0)
  68         {
  69                 *khz = 0;
  70         }
  71         else
  72         {
  73                 *khz = 64000/speed;
  74         }
  75
  76         return ERROR_OK;
  77 }
  78
  79 static bool readPowerDropout(void)
  80 {
  81         cyg_uint32 state;
  82         // sample and clear power dropout
  83         HAL_WRITE_UINT32(ZY1000_JTAG_BASE + 0x10, 0x80);
  84         HAL_READ_UINT32(ZY1000_JTAG_BASE + 0x10, state);
  85         bool powerDropout;
  86         powerDropout = (state & 0x80) != 0;
  87         return powerDropout;
  88 }
  89
  90
  91 static bool readSRST(void)
  92 {
  93         cyg_uint32 state;
  94         // sample and clear SRST sensing
  95         HAL_WRITE_UINT32(ZY1000_JTAG_BASE + 0x10, 0x00000040);
  96         HAL_READ_UINT32(ZY1000_JTAG_BASE + 0x10, state);
  97         bool srstAsserted;
  98         srstAsserted = (state & 0x40) != 0;
  99         return srstAsserted;
 100 }
 101
 102 static int zy1000_srst_asserted(int *srst_asserted)
 103 {
 104         *srst_asserted = readSRST();
 105         return ERROR_OK;
 106 }
 107
 108 static int zy1000_power_dropout(int *dropout)
 109 {
 110         *dropout = readPowerDropout();
 111         return ERROR_OK;
 112 }
 113
 114
 115 struct jtag_interface zy1000_interface =
 116 {
 117         .name = "ZY1000",
 118         .execute_queue = NULL,
 119         .speed = zy1000_speed,
 120         .register_commands = zy1000_register_commands,
 121         .init = zy1000_init,
 122         .quit = zy1000_quit,
 123         .khz = zy1000_khz,
 124         .speed_div = zy1000_speed_div,
 125         .power_dropout = zy1000_power_dropout,
 126         .srst_asserted = zy1000_srst_asserted,
 127 };
 128
 129 void zy1000_reset(int trst, int srst)
 130 {
 131         LOG_DEBUG("zy1000 trst=%d, srst=%d", trst, srst);
 132         if (!srst)
 133         {
 134                 ZY1000_POKE(ZY1000_JTAG_BASE + 0x14, 0x00000001);
 135         }
 136         else
 137         {
 138                 /* Danger!!! if clk != 0 when in
 139                  * idle in TAP_IDLE, reset halt on str912 will fail.
 140                  */
 141                 ZY1000_POKE(ZY1000_JTAG_BASE + 0x10, 0x00000001);
 142         }
 143
 144         if (!trst)
 145         {
 146                 ZY1000_POKE(ZY1000_JTAG_BASE + 0x14, 0x00000002);
 147         }
 148         else
 149         {
 150                 /* assert reset */
 151                 ZY1000_POKE(ZY1000_JTAG_BASE + 0x10, 0x00000002);
 152         }
 153
 154         if (trst||(srst && (jtag_get_reset_config() & RESET_SRST_PULLS_TRST)))
 155         {
 156                 waitIdle();
 157                 /* we're now in the RESET state until trst is deasserted */
 158                 ZY1000_POKE(ZY1000_JTAG_BASE + 0x20, TAP_RESET);
 159         } else
 160         {
 161                 /* We'll get RCLK failure when we assert TRST, so clear any false positives here */
 162                 ZY1000_POKE(ZY1000_JTAG_BASE + 0x14, 0x400);
 163         }
 164
 165         /* wait for srst to float back up */
 166         if (!srst)
 167         {
 168                 int i;
 169                 for (i = 0; i < 1000; i++)
 170                 {
 171                         // We don't want to sense our own reset, so we clear here.
 172                         // There is of course a timing hole where we could loose
 173                         // a "real" reset.
 174                         if (!readSRST())
 175                                 break;
 176
 177                         /* wait 1ms */
 178                         alive_sleep(1);
 179                 }
 180
 181                 if (i == 1000)
 182                 {
 183                         LOG_USER("SRST didn't deassert after %dms", i);
 184                 } else if (i > 1)
 185                 {
 186                         LOG_USER("SRST took %dms to deassert", i);
 187                 }
 188         }
 189 }
 190
 191 int zy1000_speed(int speed)
 192 {
 193         if (speed == 0)
 194         {
 195                 /*0 means RCLK*/
 196                 speed = 0;
 197                 ZY1000_POKE(ZY1000_JTAG_BASE + 0x10, 0x100);
 198                 LOG_DEBUG("jtag_speed using RCLK");
 199         }
 200         else
 201         {
 202                 if (speed > 8190 || speed < 2)
 203                 {
 204                         LOG_USER("valid ZY1000 jtag_speed=[8190,2]. Divisor is 64MHz / even values between 8190-2, i.e. min 7814Hz, max 32MHz");
 205                         return ERROR_INVALID_ARGUMENTS;
 206                 }
 207
 208                 LOG_USER("jtag_speed %d => JTAG clk=%f", speed, 64.0/(float)speed);
 209                 ZY1000_POKE(ZY1000_JTAG_BASE + 0x14, 0x100);
 210                 ZY1000_POKE(ZY1000_JTAG_BASE + 0x1c, speed&~1);
 211         }
 212         return ERROR_OK;
 213 }
 214
 215 static bool savePower;
 216
 217
 218 static void setPower(bool power)
 219 {
 220         savePower = power;
 221         if (power)
 222         {
 223                 HAL_WRITE_UINT32(ZY1000_JTAG_BASE + 0x14, 0x8);
 224         } else
 225         {
 226                 HAL_WRITE_UINT32(ZY1000_JTAG_BASE + 0x10, 0x8);
 227         }
 228 }
 229
 230 int handle_power_command(struct command_context *cmd_ctx, char *cmd, char **args, int argc)
 231 {
 232         if (argc > 1)
 233         {
 234                 return ERROR_INVALID_ARGUMENTS;
 235         }
 236
 237         if (argc == 1)
 238         {
 239                 bool enable;
 240                 COMMAND_PARSE_ON_OFF(args[0], enable);
 241                 setPower(enable);
 242         }
 243
 244         command_print(cmd_ctx, "Target power %s", savePower ? "on" : "off");
 245
 246         return ERROR_OK;
 247 }
 248
 249
 250 /* Give TELNET a way to find out what version this is */
 251 static int jim_zy1000_version(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
 252 {
 253         if ((argc < 1) || (argc > 3))
 254                 return JIM_ERR;
 255         const char *version_str = NULL;
 256
 257         if (argc == 1)
 258         {
 259                 version_str = ZYLIN_OPENOCD_VERSION;
 260         } else
 261         {
 262                 const char *str = Jim_GetString(argv[1], NULL);
 263                 const char *str2 = NULL;
 264                 if (argc > 2)
 265                         str2 = Jim_GetString(argv[2], NULL);
 266                 if (strcmp("openocd", str) == 0)
 267                 {
 268                         version_str = ZYLIN_OPENOCD;
 269                 }
 270                 else if (strcmp("zy1000", str) == 0)
 271                 {
 272                         version_str = ZYLIN_VERSION;
 273                 }
 274                 else if (strcmp("date", str) == 0)
 275                 {
 276                         version_str = ZYLIN_DATE;
 277                 }
 278                 else if (strcmp("time", str) == 0)
 279                 {
 280                         version_str = ZYLIN_TIME;
 281                 }
 282                 else if (strcmp("pcb", str) == 0)
 283                 {
 284 #ifdef CYGPKG_HAL_NIOS2
 285                         version_str="c";
 286 #else
 287                         version_str="b";
 288 #endif
 289                 }
 290 #ifdef CYGPKG_HAL_NIOS2
 291                 else if (strcmp("fpga", str) == 0)
 292                 {
 293
 294                         /* return a list of 32 bit integers to describe the expected
 295                          * and actual FPGA
 296                          */
 297                         static char *fpga_id = "0x12345678 0x12345678 0x12345678 0x12345678";
 298                         cyg_uint32 id, timestamp;
 299                         HAL_READ_UINT32(SYSID_BASE, id);
 300                         HAL_READ_UINT32(SYSID_BASE+4, timestamp);
 301                         sprintf(fpga_id, "0x%08x 0x%08x 0x%08x 0x%08x", id, timestamp, SYSID_ID, SYSID_TIMESTAMP);
 302                         version_str = fpga_id;
 303                         if ((argc>2) && (strcmp("time", str2) == 0))
 304                         {
 305                             time_t last_mod = timestamp;
 306                             char * t = ctime (&last_mod) ;
 307                             t[strlen(t)-1] = 0;
 308                             version_str = t;
 309                         }
 310                 }
 311 #endif
 312
 313                 else
 314                 {
 315                         return JIM_ERR;
 316                 }
 317         }
 318
 319         Jim_SetResult(interp, Jim_NewStringObj(interp, version_str, -1));
 320
 321         return JIM_OK;
 322 }
 323
 324
 325 #ifdef CYGPKG_HAL_NIOS2
 326 static int jim_zy1000_writefirmware(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
 327 {
 328         if (argc != 2)
 329                 return JIM_ERR;
 330
 331         int length;
 332         int stat;
 333         const char *str = Jim_GetString(argv[1], &length);
 334
 335         /* BUG!!!! skip header! */
 336         void *firmware_address=0x4000000;
 337         int firmware_length=0x100000;
 338
 339         if (length>firmware_length)
 340                 return JIM_ERR;
 341
 342         void *err_addr;
 343
 344     if ((stat = flash_erase((void *)firmware_address, firmware_length, (void **)&err_addr)) != 0)
 345     {
 346         return JIM_ERR;
 347     }
 348
 349     if ((stat = flash_program(firmware_address, str, length, (void **)&err_addr)) != 0)
 350         return JIM_ERR;
 351
 352     return JIM_OK;
 353 }
 354 #endif
 355
 356 static int
 357 zylinjtag_Jim_Command_powerstatus(Jim_Interp *interp,
 358                                                                    int argc,
 359                 Jim_Obj * const *argv)
 360 {
 361         if (argc != 1)
 362         {
 363                 Jim_WrongNumArgs(interp, 1, argv, "powerstatus");
 364                 return JIM_ERR;
 365         }
 366
 367         cyg_uint32 status;
 368         ZY1000_PEEK(ZY1000_JTAG_BASE + 0x10, status);
 369
 370         Jim_SetResult(interp, Jim_NewIntObj(interp, (status&0x80) != 0));
 371
 372         return JIM_OK;
 373 }
 374
 375 int zy1000_register_commands(struct command_context *cmd_ctx)
 376 {
 377         register_command(cmd_ctx, NULL, "power", handle_power_command, COMMAND_ANY,
 378                         "power <on/off> - turn power switch to target on/off. No arguments - print status.");
 379
 380         Jim_CreateCommand(interp, "zy1000_version", jim_zy1000_version, NULL, NULL);
 381
 382
 383         Jim_CreateCommand(interp, "powerstatus", zylinjtag_Jim_Command_powerstatus, NULL, NULL);
 384
 385 #ifdef CYGPKG_HAL_NIOS2
 386         Jim_CreateCommand(interp, "updatezy1000firmware", jim_zy1000_writefirmware, NULL, NULL);
 387 #endif
 388
 389
 390         return ERROR_OK;
 391 }
 392
 393
 394
 395
 396 int zy1000_init(void)
 397 {
 398         LOG_USER("%s", ZYLIN_OPENOCD_VERSION);
 399
 400         ZY1000_POKE(ZY1000_JTAG_BASE + 0x10, 0x30); // Turn on LED1 & LED2
 401
 402         setPower(true); // on by default
 403
 404
 405          /* deassert resets. Important to avoid infinite loop waiting for SRST to deassert */
 406         zy1000_reset(0, 0);
 407         zy1000_speed(jtag_get_speed());
 408
 409         return ERROR_OK;
 410 }
 411
 412 int zy1000_quit(void)
 413 {
 414
 415         return ERROR_OK;
 416 }
 417
 418
 419
 420 int interface_jtag_execute_queue(void)
 421 {
 422         cyg_uint32 empty;
 423
 424         waitIdle();
 425         ZY1000_PEEK(ZY1000_JTAG_BASE + 0x10, empty);
 426         /* clear JTAG error register */
 427         ZY1000_POKE(ZY1000_JTAG_BASE + 0x14, 0x400);
 428
 429         if ((empty&0x400) != 0)
 430         {
 431                 LOG_WARNING("RCLK timeout");
 432                 /* the error is informative only as we don't want to break the firmware if there
 433                  * is a false positive.
 434                  */
 435 //              return ERROR_FAIL;
 436         }
 437         return ERROR_OK;
 438 }
 439
 440
 441
 442
 443
 444 static cyg_uint32 getShiftValue(void)
 445 {
 446         cyg_uint32 value;
 447         waitIdle();
 448         ZY1000_PEEK(ZY1000_JTAG_BASE + 0xc, value);
 449         VERBOSE(LOG_INFO("getShiftValue %08x", value));
 450         return value;
 451 }
 452 #if 0
 453 static cyg_uint32 getShiftValueFlip(void)
 454 {
 455         cyg_uint32 value;
 456         waitIdle();
 457         ZY1000_PEEK(ZY1000_JTAG_BASE + 0x18, value);
 458         VERBOSE(LOG_INFO("getShiftValue %08x (flipped)", value));
 459         return value;
 460 }
 461 #endif
 462
 463 #if 0
 464 static void shiftValueInnerFlip(const tap_state_t state, const tap_state_t endState, int repeat, cyg_uint32 value)
 465 {
 466         VERBOSE(LOG_INFO("shiftValueInner %s %s %d %08x (flipped)", tap_state_name(state), tap_state_name(endState), repeat, value));
 467         cyg_uint32 a,b;
 468         a = state;
 469         b = endState;
 470         ZY1000_POKE(ZY1000_JTAG_BASE + 0xc, value);
 471         ZY1000_POKE(ZY1000_JTAG_BASE + 0x8, (1 << 15) | (repeat << 8) | (a << 4) | b);
 472         VERBOSE(getShiftValueFlip());
 473 }
 474 #endif
 475
 476 static void gotoEndState(tap_state_t end_state)
 477 {
 478         setCurrentState(end_state);
 479 }
 480
 481 static __inline void scanFields(int num_fields, const struct scan_field *fields, tap_state_t shiftState, int pause)
 482 {
 483         int i;
 484         int j;
 485         int k;
 486
 487         for (i = 0; i < num_fields; i++)
 488         {
 489                 cyg_uint32 value;
 490
 491                 uint8_t *inBuffer = NULL;
 492
 493
 494                 // figure out where to store the input data
 495                 int num_bits = fields[i].num_bits;
 496                 if (fields[i].in_value != NULL)
 497                 {
 498                         inBuffer = fields[i].in_value;
 499                 }
 500
 501                 // here we shuffle N bits out/in
 502                 j = 0;
 503                 while (j < num_bits)
 504                 {
 505                         tap_state_t pause_state;
 506                         int l;
 507                         k = num_bits-j;
 508                         pause_state = (shiftState == TAP_DRSHIFT)?TAP_DRSHIFT:TAP_IRSHIFT;
 509                         if (k > 32)
 510                         {
 511                                 k = 32;
 512                                 /* we have more to shift out */
 513                         } else if (pause&&(i == num_fields-1))
 514                         {
 515                                 /* this was the last to shift out this time */
 516                                 pause_state = (shiftState==TAP_DRSHIFT)?TAP_DRPAUSE:TAP_IRPAUSE;
 517                         }
 518
 519                         // we have (num_bits + 7)/8 bytes of bits to toggle out.
 520                         // bits are pushed out LSB to MSB
 521                         value = 0;
 522                         if (fields[i].out_value != NULL)
 523                         {
 524                                 for (l = 0; l < k; l += 8)
 525                                 {
 526                                         value|=fields[i].out_value[(j + l)/8]<<l;
 527                                 }
 528                         }
 529                         /* mask away unused bits for easier debugging */
 530                         if (k < 32)
 531                         {
 532                                 value&=~(((uint32_t)0xffffffff) << k);
 533                         } else
 534                         {
 535                                 /* Shifting by >= 32 is not defined by the C standard
 536                                  * and will in fact shift by &0x1f bits on nios */
 537                         }
 538
 539                         shiftValueInner(shiftState, pause_state, k, value);
 540
 541                         if (inBuffer != NULL)
 542                         {
 543                                 // data in, LSB to MSB
 544                                 value = getShiftValue();
 545                                 // we're shifting in data to MSB, shift data to be aligned for returning the value
 546                                 value >>= 32-k;
 547
 548                                 for (l = 0; l < k; l += 8)
 549                                 {
 550                                         inBuffer[(j + l)/8]=(value >> l)&0xff;
 551                                 }
 552                         }
 553                         j += k;
 554                 }
 555         }
 556 }
 557
 558 int interface_jtag_add_ir_scan(int num_fields, const struct scan_field *fields, tap_state_t state)
 559 {
 560
 561         int j;
 562         int scan_size = 0;
 563         struct jtag_tap *tap, *nextTap;
 564         for (tap = jtag_tap_next_enabled(NULL); tap!= NULL; tap = nextTap)
 565         {
 566                 nextTap = jtag_tap_next_enabled(tap);
 567                 int pause = (nextTap==NULL);
 568
 569                 int found = 0;
 570
 571                 scan_size = tap->ir_length;
 572
 573                 /* search the list */
 574                 for (j = 0; j < num_fields; j++)
 575                 {
 576                         if (tap == fields[j].tap)
 577                         {
 578                                 found = 1;
 579
 580                                 scanFields(1, fields + j, TAP_IRSHIFT, pause);
 581                                 /* update device information */
 582                                 buf_cpy(fields[j].out_value, tap->cur_instr, scan_size);
 583
 584                                 tap->bypass = 0;
 585                                 break;
 586                         }
 587                 }
 588
 589                 if (!found)
 590                 {
 591                         /* if a device isn't listed, set it to BYPASS */
 592                         uint8_t ones[]={0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff};
 593
 594                         struct scan_field tmp;
 595                         memset(&tmp, 0, sizeof(tmp));
 596                         tmp.out_value = ones;
 597                         tmp.num_bits = scan_size;
 598                         scanFields(1, &tmp, TAP_IRSHIFT, pause);
 599                         /* update device information */
 600                         buf_cpy(tmp.out_value, tap->cur_instr, scan_size);
 601                         tap->bypass = 1;
 602                 }
 603         }
 604         gotoEndState(state);
 605
 606         return ERROR_OK;
 607 }
 608
 609
 610
 611
 612
 613 int interface_jtag_add_plain_ir_scan(int num_fields, const struct scan_field *fields, tap_state_t state)
 614 {
 615         scanFields(num_fields, fields, TAP_IRSHIFT, 1);
 616         gotoEndState(state);
 617
 618         return ERROR_OK;
 619 }
 620
 621 int interface_jtag_add_dr_scan(int num_fields, const struct scan_field *fields, tap_state_t state)
 622 {
 623
 624         int j;
 625         struct jtag_tap *tap, *nextTap;
 626         for (tap = jtag_tap_next_enabled(NULL); tap!= NULL; tap = nextTap)
 627         {
 628                 nextTap = jtag_tap_next_enabled(tap);
 629                 int found = 0;
 630                 int pause = (nextTap==NULL);
 631
 632                 for (j = 0; j < num_fields; j++)
 633                 {
 634                         if (tap == fields[j].tap)
 635                         {
 636                                 found = 1;
 637
 638                                 scanFields(1, fields+j, TAP_DRSHIFT, pause);
 639                         }
 640                 }
 641                 if (!found)
 642                 {
 643                         struct scan_field tmp;
 644                         /* program the scan field to 1 bit length, and ignore it's value */
 645                         tmp.num_bits = 1;
 646                         tmp.out_value = NULL;
 647                         tmp.in_value = NULL;
 648
 649                         scanFields(1, &tmp, TAP_DRSHIFT, pause);
 650                 }
 651                 else
 652                 {
 653                 }
 654         }
 655         gotoEndState(state);
 656         return ERROR_OK;
 657 }
 658
 659 int interface_jtag_add_plain_dr_scan(int num_fields, const struct scan_field *fields, tap_state_t state)
 660 {
 661         scanFields(num_fields, fields, TAP_DRSHIFT, 1);
 662         gotoEndState(state);
 663         return ERROR_OK;
 664 }
 665
 666
 667 int interface_jtag_add_tlr()
 668 {
 669         setCurrentState(TAP_RESET);
 670         return ERROR_OK;
 671 }
 672
 673
 674
 675
 676 int interface_jtag_add_reset(int req_trst, int req_srst)
 677 {
 678         zy1000_reset(req_trst, req_srst);
 679         return ERROR_OK;
 680 }
 681
 682 static int zy1000_jtag_add_clocks(int num_cycles, tap_state_t state, tap_state_t clockstate)
 683 {
 684         /* num_cycles can be 0 */
 685         setCurrentState(clockstate);
 686
 687         /* execute num_cycles, 32 at the time. */
 688         int i;
 689         for (i = 0; i < num_cycles; i += 32)
 690         {
 691                 int num;
 692                 num = 32;
 693                 if (num_cycles-i < num)
 694                 {
 695                         num = num_cycles-i;
 696                 }
 697                 shiftValueInner(clockstate, clockstate, num, 0);
 698         }
 699
 700 #if !TEST_MANUAL()
 701         /* finish in end_state */
 702         setCurrentState(state);
 703 #else
 704         tap_state_t t = TAP_IDLE;
 705         /* test manual drive code on any target */
 706         int tms;
 707         uint8_t tms_scan = tap_get_tms_path(t, state);
 708         int tms_count = tap_get_tms_path_len(tap_get_state(), tap_get_end_state());
 709
 710         for (i = 0; i < tms_count; i++)
 711         {
 712                 tms = (tms_scan >> i) & 1;
 713                 waitIdle();
 714                 ZY1000_POKE(ZY1000_JTAG_BASE + 0x28,  tms);
 715         }
 716         waitIdle();
 717         ZY1000_POKE(ZY1000_JTAG_BASE + 0x20, state);
 718 #endif
 719
 720
 721         return ERROR_OK;
 722 }
 723
 724 int interface_jtag_add_runtest(int num_cycles, tap_state_t state)
 725 {
 726         return zy1000_jtag_add_clocks(num_cycles, state, TAP_IDLE);
 727 }
 728
 729 int interface_jtag_add_clocks(int num_cycles)
 730 {
 731         return zy1000_jtag_add_clocks(num_cycles, cmd_queue_cur_state, cmd_queue_cur_state);
 732 }
 733
 734 int interface_jtag_add_sleep(uint32_t us)
 735 {
 736         jtag_sleep(us);
 737         return ERROR_OK;
 738 }
 739
 740 int interface_jtag_add_pathmove(int num_states, const tap_state_t *path)
 741 {
 742         int state_count;
 743         int tms = 0;
 744
 745         /*wait for the fifo to be empty*/
 746         waitIdle();
 747
 748         state_count = 0;
 749
 750         tap_state_t cur_state = cmd_queue_cur_state;
 751
 752         while (num_states)
 753         {
 754                 if (tap_state_transition(cur_state, false) == path[state_count])
 755                 {
 756                         tms = 0;
 757                 }
 758                 else if (tap_state_transition(cur_state, true) == path[state_count])
 759                 {
 760                         tms = 1;
 761                 }
 762                 else
 763                 {
 764                         LOG_ERROR("BUG: %s -> %s isn't a valid TAP transition", tap_state_name(cur_state), tap_state_name(path[state_count]));
 765                         exit(-1);
 766                 }
 767
 768                 waitIdle();
 769                 ZY1000_POKE(ZY1000_JTAG_BASE + 0x28,  tms);
 770
 771                 cur_state = path[state_count];
 772                 state_count++;
 773                 num_states--;
 774         }
 775
 776         waitIdle();
 777         ZY1000_POKE(ZY1000_JTAG_BASE + 0x20,  cur_state);
 778         return ERROR_OK;
 779 }
 780
 781
 782
 783 void embeddedice_write_dcc(struct jtag_tap *tap, int reg_addr, uint8_t *buffer, int little, int count)
 784 {
 785 //      static int const reg_addr = 0x5;
 786         tap_state_t end_state = jtag_get_end_state();
 787         if (jtag_tap_next_enabled(jtag_tap_next_enabled(NULL)) == NULL)
 788         {
 789                 /* better performance via code duplication */
 790                 if (little)
 791                 {
 792                         int i;
 793                         for (i = 0; i < count; i++)
 794                         {
 795                                 shiftValueInner(TAP_DRSHIFT, TAP_DRSHIFT, 32, fast_target_buffer_get_u32(buffer, 1));
 796                                 shiftValueInner(TAP_DRSHIFT, end_state, 6, reg_addr | (1 << 5));
 797                                 buffer += 4;
 798                         }
 799                 } else
 800                 {
 801                         int i;
 802                         for (i = 0; i < count; i++)
 803                         {
 804                                 shiftValueInner(TAP_DRSHIFT, TAP_DRSHIFT, 32, fast_target_buffer_get_u32(buffer, 0));
 805                                 shiftValueInner(TAP_DRSHIFT, end_state, 6, reg_addr | (1 << 5));
 806                                 buffer += 4;
 807                         }
 808                 }
 809         }
 810         else
 811         {
 812                 int i;
 813                 for (i = 0; i < count; i++)
 814                 {
 815                         embeddedice_write_reg_inner(tap, reg_addr, fast_target_buffer_get_u32(buffer, little));
 816                         buffer += 4;
 817                 }
 818         }
 819 }
 820
 821