10.0.0.21 Git - openocd-genbsdl/blob - src/jtag/zy1000/zy1000.c

   1 /***************************************************************************
   2  *   Copyright (C) 2007-2009 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
  20 /* This file supports the zy1000 debugger: http://www.zylin.com/zy1000.html
  21  *
  22  * The zy1000 is a standalone debugger that has a web interface and
  23  * requires no drivers on the developer host as all communication
  24  * is via TCP/IP. The zy1000 gets it performance(~400-700kBytes/s
  25  * DCC downloads @ 16MHz target) as it has an FPGA to hardware
  26  * accelerate the JTAG commands, while offering *very* low latency
  27  * between OpenOCD and the FPGA registers.
  28  *
  29  * The disadvantage of the zy1000 is that it has a feeble CPU compared to
  30  * a PC(ca. 50-500 DMIPS depending on how one counts it), whereas a PC
  31  * is on the order of 10000 DMIPS(i.e. at a factor of 20-200).
  32  *
  33  * The zy1000 revc hardware is using an Altera Nios CPU, whereas the
  34  * revb is using ARM7 + Xilinx.
  35  *
  36  * See Zylin web pages or contact Zylin for more information.
  37  *
  38  * The reason this code is in OpenOCD rather than OpenOCD linked with the
  39  * ZY1000 code is that OpenOCD is the long road towards getting
  40  * libopenocd into place. libopenocd will support both low performance,
  41  * low latency systems(embedded) and high performance high latency
  42  * systems(PCs).
  43  */
  44 #ifdef HAVE_CONFIG_H
  45 #include "config.h"
  46 #endif
  47
  48 #include <target/embeddedice.h>
  49 #include <jtag/minidriver.h>
  50 #include <jtag/interface.h>
  51 #include "zy1000_version.h"
  52
  53 #include <cyg/hal/hal_io.h>             // low level i/o
  54 #include <cyg/hal/hal_diag.h>
  55
  56 #include <time.h>
  57
  58 #define ZYLIN_VERSION GIT_ZY1000_VERSION
  59 #define ZYLIN_DATE __DATE__
  60 #define ZYLIN_TIME __TIME__
  61 #define ZYLIN_OPENOCD GIT_OPENOCD_VERSION
  62 #define ZYLIN_OPENOCD_VERSION "ZY1000 " ZYLIN_VERSION " " ZYLIN_DATE
  63
  64
  65 static int zy1000_khz(int khz, int *jtag_speed)
  66 {
  67         if (khz == 0)
  68         {
  69                 *jtag_speed = 0;
  70         }
  71         else
  72         {
  73                 *jtag_speed = 64000/khz;
  74         }
  75         return ERROR_OK;
  76 }
  77
  78 static int zy1000_speed_div(int speed, int *khz)
  79 {
  80         if (speed == 0)
  81         {
  82                 *khz = 0;
  83         }
  84         else
  85         {
  86                 *khz = 64000/speed;
  87         }
  88
  89         return ERROR_OK;
  90 }
  91
  92 static bool readPowerDropout(void)
  93 {
  94         cyg_uint32 state;
  95         // sample and clear power dropout
  96         HAL_WRITE_UINT32(ZY1000_JTAG_BASE + 0x10, 0x80);
  97         HAL_READ_UINT32(ZY1000_JTAG_BASE + 0x10, state);
  98         bool powerDropout;
  99         powerDropout = (state & 0x80) != 0;
 100         return powerDropout;
 101 }
 102
 103
 104 static bool readSRST(void)
 105 {
 106         cyg_uint32 state;
 107         // sample and clear SRST sensing
 108         HAL_WRITE_UINT32(ZY1000_JTAG_BASE + 0x10, 0x00000040);
 109         HAL_READ_UINT32(ZY1000_JTAG_BASE + 0x10, state);
 110         bool srstAsserted;
 111         srstAsserted = (state & 0x40) != 0;
 112         return srstAsserted;
 113 }
 114
 115 static int zy1000_srst_asserted(int *srst_asserted)
 116 {
 117         *srst_asserted = readSRST();
 118         return ERROR_OK;
 119 }
 120
 121 static int zy1000_power_dropout(int *dropout)
 122 {
 123         *dropout = readPowerDropout();
 124         return ERROR_OK;
 125 }
 126
 127 void zy1000_reset(int trst, int srst)
 128 {
 129         LOG_DEBUG("zy1000 trst=%d, srst=%d", trst, srst);
 130         if (!srst)
 131         {
 132                 ZY1000_POKE(ZY1000_JTAG_BASE + 0x14, 0x00000001);
 133         }
 134         else
 135         {
 136                 /* Danger!!! if clk != 0 when in
 137                  * idle in TAP_IDLE, reset halt on str912 will fail.
 138                  */
 139                 ZY1000_POKE(ZY1000_JTAG_BASE + 0x10, 0x00000001);
 140         }
 141
 142         if (!trst)
 143         {
 144                 ZY1000_POKE(ZY1000_JTAG_BASE + 0x14, 0x00000002);
 145         }
 146         else
 147         {
 148                 /* assert reset */
 149                 ZY1000_POKE(ZY1000_JTAG_BASE + 0x10, 0x00000002);
 150         }
 151
 152         if (trst||(srst && (jtag_get_reset_config() & RESET_SRST_PULLS_TRST)))
 153         {
 154                 waitIdle();
 155                 /* we're now in the RESET state until trst is deasserted */
 156                 ZY1000_POKE(ZY1000_JTAG_BASE + 0x20, TAP_RESET);
 157         } else
 158         {
 159                 /* We'll get RCLK failure when we assert TRST, so clear any false positives here */
 160                 ZY1000_POKE(ZY1000_JTAG_BASE + 0x14, 0x400);
 161         }
 162
 163         /* wait for srst to float back up */
 164         if (!srst)
 165         {
 166                 int i;
 167                 for (i = 0; i < 1000; i++)
 168                 {
 169                         // We don't want to sense our own reset, so we clear here.
 170                         // There is of course a timing hole where we could loose
 171                         // a "real" reset.
 172                         if (!readSRST())
 173                                 break;
 174
 175                         /* wait 1ms */
 176                         alive_sleep(1);
 177                 }
 178
 179                 if (i == 1000)
 180                 {
 181                         LOG_USER("SRST didn't deassert after %dms", i);
 182                 } else if (i > 1)
 183                 {
 184                         LOG_USER("SRST took %dms to deassert", i);
 185                 }
 186         }
 187 }
 188
 189 int zy1000_speed(int speed)
 190 {
 191         if (speed == 0)
 192         {
 193                 /*0 means RCLK*/
 194                 speed = 0;
 195                 ZY1000_POKE(ZY1000_JTAG_BASE + 0x10, 0x100);
 196                 LOG_DEBUG("jtag_speed using RCLK");
 197         }
 198         else
 199         {
 200                 if (speed > 8190 || speed < 2)
 201                 {
 202                         LOG_USER("valid ZY1000 jtag_speed=[8190,2]. Divisor is 64MHz / even values between 8190-2, i.e. min 7814Hz, max 32MHz");
 203                         return ERROR_INVALID_ARGUMENTS;
 204                 }
 205
 206                 LOG_USER("jtag_speed %d => JTAG clk=%f", speed, 64.0/(float)speed);
 207                 ZY1000_POKE(ZY1000_JTAG_BASE + 0x14, 0x100);
 208                 ZY1000_POKE(ZY1000_JTAG_BASE + 0x1c, speed&~1);
 209         }
 210         return ERROR_OK;
 211 }
 212
 213 static bool savePower;
 214
 215
 216 static void setPower(bool power)
 217 {
 218         savePower = power;
 219         if (power)
 220         {
 221                 HAL_WRITE_UINT32(ZY1000_JTAG_BASE + 0x14, 0x8);
 222         } else
 223         {
 224                 HAL_WRITE_UINT32(ZY1000_JTAG_BASE + 0x10, 0x8);
 225         }
 226 }
 227
 228 COMMAND_HANDLER(handle_power_command)
 229 {
 230         switch (CMD_ARGC)
 231         {
 232         case 1: {
 233                 bool enable;
 234                 COMMAND_PARSE_ON_OFF(CMD_ARGV[0], enable);
 235                 setPower(enable);
 236                 // fall through
 237         }
 238         case 0:
 239                 LOG_INFO("Target power %s", savePower ? "on" : "off");
 240                 break;
 241         default:
 242                 return ERROR_INVALID_ARGUMENTS;
 243         }
 244
 245         return ERROR_OK;
 246 }
 247
 248
 249 /* Give TELNET a way to find out what version this is */
 250 static int jim_zy1000_version(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
 251 {
 252         if ((argc < 1) || (argc > 3))
 253                 return JIM_ERR;
 254         const char *version_str = NULL;
 255
 256         if (argc == 1)
 257         {
 258                 version_str = ZYLIN_OPENOCD_VERSION;
 259         } else
 260         {
 261                 const char *str = Jim_GetString(argv[1], NULL);
 262                 const char *str2 = NULL;
 263                 if (argc > 2)
 264                         str2 = Jim_GetString(argv[2], NULL);
 265                 if (strcmp("openocd", str) == 0)
 266                 {
 267                         version_str = ZYLIN_OPENOCD;
 268                 }
 269                 else if (strcmp("zy1000", str) == 0)
 270                 {
 271                         version_str = ZYLIN_VERSION;
 272                 }
 273                 else if (strcmp("date", str) == 0)
 274                 {
 275                         version_str = ZYLIN_DATE;
 276                 }
 277                 else if (strcmp("time", str) == 0)
 278                 {
 279                         version_str = ZYLIN_TIME;
 280                 }
 281                 else if (strcmp("pcb", str) == 0)
 282                 {
 283 #ifdef CYGPKG_HAL_NIOS2
 284                         version_str="c";
 285 #else
 286                         version_str="b";
 287 #endif
 288                 }
 289 #ifdef CYGPKG_HAL_NIOS2
 290                 else if (strcmp("fpga", str) == 0)
 291                 {
 292
 293                         /* return a list of 32 bit integers to describe the expected
 294                          * and actual FPGA
 295                          */
 296                         static char *fpga_id = "0x12345678 0x12345678 0x12345678 0x12345678";
 297                         cyg_uint32 id, timestamp;
 298                         HAL_READ_UINT32(SYSID_BASE, id);
 299                         HAL_READ_UINT32(SYSID_BASE+4, timestamp);
 300                         sprintf(fpga_id, "0x%08x 0x%08x 0x%08x 0x%08x", id, timestamp, SYSID_ID, SYSID_TIMESTAMP);
 301                         version_str = fpga_id;
 302                         if ((argc>2) && (strcmp("time", str2) == 0))
 303                         {
 304                             time_t last_mod = timestamp;
 305                             char * t = ctime (&last_mod) ;
 306                             t[strlen(t)-1] = 0;
 307                             version_str = t;
 308                         }
 309                 }
 310 #endif
 311
 312                 else
 313                 {
 314                         return JIM_ERR;
 315                 }
 316         }
 317
 318         Jim_SetResult(interp, Jim_NewStringObj(interp, version_str, -1));
 319
 320         return JIM_OK;
 321 }
 322
 323
 324 #ifdef CYGPKG_HAL_NIOS2
 325 static int jim_zy1000_writefirmware(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
 326 {
 327         if (argc != 2)
 328                 return JIM_ERR;
 329
 330         int length;
 331         int stat;
 332         const char *str = Jim_GetString(argv[1], &length);
 333
 334         /* BUG!!!! skip header! */
 335         void *firmware_address=0x4000000;
 336         int firmware_length=0x100000;
 337
 338         if (length>firmware_length)
 339                 return JIM_ERR;
 340
 341         void *err_addr;
 342
 343     if ((stat = flash_erase((void *)firmware_address, firmware_length, (void **)&err_addr)) != 0)
 344     {
 345         return JIM_ERR;
 346     }
 347
 348     if ((stat = flash_program(firmware_address, str, length, (void **)&err_addr)) != 0)
 349         return JIM_ERR;
 350
 351     return JIM_OK;
 352 }
 353 #endif
 354
 355 static int
 356 zylinjtag_Jim_Command_powerstatus(Jim_Interp *interp,
 357                                                                    int argc,
 358                 Jim_Obj * const *argv)
 359 {
 360         if (argc != 1)
 361         {
 362                 Jim_WrongNumArgs(interp, 1, argv, "powerstatus");
 363                 return JIM_ERR;
 364         }
 365
 366         cyg_uint32 status;
 367         ZY1000_PEEK(ZY1000_JTAG_BASE + 0x10, status);
 368
 369         Jim_SetResult(interp, Jim_NewIntObj(interp, (status&0x80) != 0));
 370
 371         return JIM_OK;
 372 }
 373
 374
 375
 376
 377 int zy1000_init(void)
 378 {
 379         LOG_USER("%s", ZYLIN_OPENOCD_VERSION);
 380
 381         ZY1000_POKE(ZY1000_JTAG_BASE + 0x10, 0x30); // Turn on LED1 & LED2
 382
 383         setPower(true); // on by default
 384
 385
 386          /* deassert resets. Important to avoid infinite loop waiting for SRST to deassert */
 387         zy1000_reset(0, 0);
 388         zy1000_speed(jtag_get_speed());
 389
 390         return ERROR_OK;
 391 }
 392
 393 int zy1000_quit(void)
 394 {
 395
 396         return ERROR_OK;
 397 }
 398
 399
 400
 401 int interface_jtag_execute_queue(void)
 402 {
 403         cyg_uint32 empty;
 404
 405         waitIdle();
 406         ZY1000_PEEK(ZY1000_JTAG_BASE + 0x10, empty);
 407         /* clear JTAG error register */
 408         ZY1000_POKE(ZY1000_JTAG_BASE + 0x14, 0x400);
 409
 410         if ((empty&0x400) != 0)
 411         {
 412                 LOG_WARNING("RCLK timeout");
 413                 /* the error is informative only as we don't want to break the firmware if there
 414                  * is a false positive.
 415                  */
 416 //              return ERROR_FAIL;
 417         }
 418         return ERROR_OK;
 419 }
 420
 421
 422
 423
 424
 425 static cyg_uint32 getShiftValue(void)
 426 {
 427         cyg_uint32 value;
 428         waitIdle();
 429         ZY1000_PEEK(ZY1000_JTAG_BASE + 0xc, value);
 430         VERBOSE(LOG_INFO("getShiftValue %08x", value));
 431         return value;
 432 }
 433 #if 0
 434 static cyg_uint32 getShiftValueFlip(void)
 435 {
 436         cyg_uint32 value;
 437         waitIdle();
 438         ZY1000_PEEK(ZY1000_JTAG_BASE + 0x18, value);
 439         VERBOSE(LOG_INFO("getShiftValue %08x (flipped)", value));
 440         return value;
 441 }
 442 #endif
 443
 444 #if 0
 445 static void shiftValueInnerFlip(const tap_state_t state, const tap_state_t endState, int repeat, cyg_uint32 value)
 446 {
 447         VERBOSE(LOG_INFO("shiftValueInner %s %s %d %08x (flipped)", tap_state_name(state), tap_state_name(endState), repeat, value));
 448         cyg_uint32 a,b;
 449         a = state;
 450         b = endState;
 451         ZY1000_POKE(ZY1000_JTAG_BASE + 0xc, value);
 452         ZY1000_POKE(ZY1000_JTAG_BASE + 0x8, (1 << 15) | (repeat << 8) | (a << 4) | b);
 453         VERBOSE(getShiftValueFlip());
 454 }
 455 #endif
 456
 457 static void gotoEndState(tap_state_t end_state)
 458 {
 459         setCurrentState(end_state);
 460 }
 461
 462 static __inline void scanFields(int num_fields, const struct scan_field *fields, tap_state_t shiftState, int pause)
 463 {
 464         int i;
 465         int j;
 466         int k;
 467
 468         for (i = 0; i < num_fields; i++)
 469         {
 470                 cyg_uint32 value;
 471
 472                 uint8_t *inBuffer = NULL;
 473
 474
 475                 // figure out where to store the input data
 476                 int num_bits = fields[i].num_bits;
 477                 if (fields[i].in_value != NULL)
 478                 {
 479                         inBuffer = fields[i].in_value;
 480                 }
 481
 482                 // here we shuffle N bits out/in
 483                 j = 0;
 484                 while (j < num_bits)
 485                 {
 486                         tap_state_t pause_state;
 487                         int l;
 488                         k = num_bits-j;
 489                         pause_state = (shiftState == TAP_DRSHIFT)?TAP_DRSHIFT:TAP_IRSHIFT;
 490                         if (k > 32)
 491                         {
 492                                 k = 32;
 493                                 /* we have more to shift out */
 494                         } else if (pause&&(i == num_fields-1))
 495                         {
 496                                 /* this was the last to shift out this time */
 497                                 pause_state = (shiftState==TAP_DRSHIFT)?TAP_DRPAUSE:TAP_IRPAUSE;
 498                         }
 499
 500                         // we have (num_bits + 7)/8 bytes of bits to toggle out.
 501                         // bits are pushed out LSB to MSB
 502                         value = 0;
 503                         if (fields[i].out_value != NULL)
 504                         {
 505                                 for (l = 0; l < k; l += 8)
 506                                 {
 507                                         value|=fields[i].out_value[(j + l)/8]<<l;
 508                                 }
 509                         }
 510                         /* mask away unused bits for easier debugging */
 511                         if (k < 32)
 512                         {
 513                                 value&=~(((uint32_t)0xffffffff) << k);
 514                         } else
 515                         {
 516                                 /* Shifting by >= 32 is not defined by the C standard
 517                                  * and will in fact shift by &0x1f bits on nios */
 518                         }
 519
 520                         shiftValueInner(shiftState, pause_state, k, value);
 521
 522                         if (inBuffer != NULL)
 523                         {
 524                                 // data in, LSB to MSB
 525                                 value = getShiftValue();
 526                                 // we're shifting in data to MSB, shift data to be aligned for returning the value
 527                                 value >>= 32-k;
 528
 529                                 for (l = 0; l < k; l += 8)
 530                                 {
 531                                         inBuffer[(j + l)/8]=(value >> l)&0xff;
 532                                 }
 533                         }
 534                         j += k;
 535                 }
 536         }
 537 }
 538
 539 int interface_jtag_add_ir_scan(int num_fields, const struct scan_field *fields, tap_state_t state)
 540 {
 541
 542         int j;
 543         int scan_size = 0;
 544         struct jtag_tap *tap, *nextTap;
 545         for (tap = jtag_tap_next_enabled(NULL); tap!= NULL; tap = nextTap)
 546         {
 547                 nextTap = jtag_tap_next_enabled(tap);
 548                 int pause = (nextTap==NULL);
 549
 550                 int found = 0;
 551
 552                 scan_size = tap->ir_length;
 553
 554                 /* search the list */
 555                 for (j = 0; j < num_fields; j++)
 556                 {
 557                         if (tap == fields[j].tap)
 558                         {
 559                                 found = 1;
 560
 561                                 scanFields(1, fields + j, TAP_IRSHIFT, pause);
 562                                 /* update device information */
 563                                 buf_cpy(fields[j].out_value, tap->cur_instr, scan_size);
 564
 565                                 tap->bypass = 0;
 566                                 break;
 567                         }
 568                 }
 569
 570                 if (!found)
 571                 {
 572                         /* if a device isn't listed, set it to BYPASS */
 573                         uint8_t ones[]={0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff};
 574
 575                         struct scan_field tmp;
 576                         memset(&tmp, 0, sizeof(tmp));
 577                         tmp.out_value = ones;
 578                         tmp.num_bits = scan_size;
 579                         scanFields(1, &tmp, TAP_IRSHIFT, pause);
 580                         /* update device information */
 581                         buf_cpy(tmp.out_value, tap->cur_instr, scan_size);
 582                         tap->bypass = 1;
 583                 }
 584         }
 585         gotoEndState(state);
 586
 587         return ERROR_OK;
 588 }
 589
 590
 591
 592
 593
 594 int interface_jtag_add_plain_ir_scan(int num_fields, const struct scan_field *fields, tap_state_t state)
 595 {
 596         scanFields(num_fields, fields, TAP_IRSHIFT, 1);
 597         gotoEndState(state);
 598
 599         return ERROR_OK;
 600 }
 601
 602 int interface_jtag_add_dr_scan(int num_fields, const struct scan_field *fields, tap_state_t state)
 603 {
 604
 605         int j;
 606         struct jtag_tap *tap, *nextTap;
 607         for (tap = jtag_tap_next_enabled(NULL); tap!= NULL; tap = nextTap)
 608         {
 609                 nextTap = jtag_tap_next_enabled(tap);
 610                 int found = 0;
 611                 int pause = (nextTap==NULL);
 612
 613                 for (j = 0; j < num_fields; j++)
 614                 {
 615                         if (tap == fields[j].tap)
 616                         {
 617                                 found = 1;
 618
 619                                 scanFields(1, fields+j, TAP_DRSHIFT, pause);
 620                         }
 621                 }
 622                 if (!found)
 623                 {
 624                         struct scan_field tmp;
 625                         /* program the scan field to 1 bit length, and ignore it's value */
 626                         tmp.num_bits = 1;
 627                         tmp.out_value = NULL;
 628                         tmp.in_value = NULL;
 629
 630                         scanFields(1, &tmp, TAP_DRSHIFT, pause);
 631                 }
 632                 else
 633                 {
 634                 }
 635         }
 636         gotoEndState(state);
 637         return ERROR_OK;
 638 }
 639
 640 int interface_jtag_add_plain_dr_scan(int num_fields, const struct scan_field *fields, tap_state_t state)
 641 {
 642         scanFields(num_fields, fields, TAP_DRSHIFT, 1);
 643         gotoEndState(state);
 644         return ERROR_OK;
 645 }
 646
 647
 648 int interface_jtag_add_tlr()
 649 {
 650         setCurrentState(TAP_RESET);
 651         return ERROR_OK;
 652 }
 653
 654
 655
 656
 657 int interface_jtag_add_reset(int req_trst, int req_srst)
 658 {
 659         zy1000_reset(req_trst, req_srst);
 660         return ERROR_OK;
 661 }
 662
 663 static int zy1000_jtag_add_clocks(int num_cycles, tap_state_t state, tap_state_t clockstate)
 664 {
 665         /* num_cycles can be 0 */
 666         setCurrentState(clockstate);
 667
 668         /* execute num_cycles, 32 at the time. */
 669         int i;
 670         for (i = 0; i < num_cycles; i += 32)
 671         {
 672                 int num;
 673                 num = 32;
 674                 if (num_cycles-i < num)
 675                 {
 676                         num = num_cycles-i;
 677                 }
 678                 shiftValueInner(clockstate, clockstate, num, 0);
 679         }
 680
 681 #if !TEST_MANUAL()
 682         /* finish in end_state */
 683         setCurrentState(state);
 684 #else
 685         tap_state_t t = TAP_IDLE;
 686         /* test manual drive code on any target */
 687         int tms;
 688         uint8_t tms_scan = tap_get_tms_path(t, state);
 689         int tms_count = tap_get_tms_path_len(tap_get_state(), tap_get_end_state());
 690
 691         for (i = 0; i < tms_count; i++)
 692         {
 693                 tms = (tms_scan >> i) & 1;
 694                 waitIdle();
 695                 ZY1000_POKE(ZY1000_JTAG_BASE + 0x28,  tms);
 696         }
 697         waitIdle();
 698         ZY1000_POKE(ZY1000_JTAG_BASE + 0x20, state);
 699 #endif
 700
 701
 702         return ERROR_OK;
 703 }
 704
 705 int interface_jtag_add_runtest(int num_cycles, tap_state_t state)
 706 {
 707         return zy1000_jtag_add_clocks(num_cycles, state, TAP_IDLE);
 708 }
 709
 710 int interface_jtag_add_clocks(int num_cycles)
 711 {
 712         return zy1000_jtag_add_clocks(num_cycles, cmd_queue_cur_state, cmd_queue_cur_state);
 713 }
 714
 715 int interface_jtag_add_sleep(uint32_t us)
 716 {
 717         jtag_sleep(us);
 718         return ERROR_OK;
 719 }
 720
 721 int interface_jtag_add_pathmove(int num_states, const tap_state_t *path)
 722 {
 723         int state_count;
 724         int tms = 0;
 725
 726         /*wait for the fifo to be empty*/
 727         waitIdle();
 728
 729         state_count = 0;
 730
 731         tap_state_t cur_state = cmd_queue_cur_state;
 732
 733         while (num_states)
 734         {
 735                 if (tap_state_transition(cur_state, false) == path[state_count])
 736                 {
 737                         tms = 0;
 738                 }
 739                 else if (tap_state_transition(cur_state, true) == path[state_count])
 740                 {
 741                         tms = 1;
 742                 }
 743                 else
 744                 {
 745                         LOG_ERROR("BUG: %s -> %s isn't a valid TAP transition", tap_state_name(cur_state), tap_state_name(path[state_count]));
 746                         exit(-1);
 747                 }
 748
 749                 waitIdle();
 750                 ZY1000_POKE(ZY1000_JTAG_BASE + 0x28,  tms);
 751
 752                 cur_state = path[state_count];
 753                 state_count++;
 754                 num_states--;
 755         }
 756
 757         waitIdle();
 758         ZY1000_POKE(ZY1000_JTAG_BASE + 0x20,  cur_state);
 759         return ERROR_OK;
 760 }
 761
 762
 763
 764 void embeddedice_write_dcc(struct jtag_tap *tap, int reg_addr, uint8_t *buffer, int little, int count)
 765 {
 766 //      static int const reg_addr = 0x5;
 767         tap_state_t end_state = jtag_get_end_state();
 768         if (jtag_tap_next_enabled(jtag_tap_next_enabled(NULL)) == NULL)
 769         {
 770                 /* better performance via code duplication */
 771                 if (little)
 772                 {
 773                         int i;
 774                         for (i = 0; i < count; i++)
 775                         {
 776                                 shiftValueInner(TAP_DRSHIFT, TAP_DRSHIFT, 32, fast_target_buffer_get_u32(buffer, 1));
 777                                 shiftValueInner(TAP_DRSHIFT, end_state, 6, reg_addr | (1 << 5));
 778                                 buffer += 4;
 779                         }
 780                 } else
 781                 {
 782                         int i;
 783                         for (i = 0; i < count; i++)
 784                         {
 785                                 shiftValueInner(TAP_DRSHIFT, TAP_DRSHIFT, 32, fast_target_buffer_get_u32(buffer, 0));
 786                                 shiftValueInner(TAP_DRSHIFT, end_state, 6, reg_addr | (1 << 5));
 787                                 buffer += 4;
 788                         }
 789                 }
 790         }
 791         else
 792         {
 793                 int i;
 794                 for (i = 0; i < count; i++)
 795                 {
 796                         embeddedice_write_reg_inner(tap, reg_addr, fast_target_buffer_get_u32(buffer, little));
 797                         buffer += 4;
 798                 }
 799         }
 800 }
 801
 802
 803 static const struct command_registration zy1000_commands[] = {
 804         {
 805                 .name = "power",
 806                 .handler = &handle_power_command,
 807                 .mode = COMMAND_ANY,
 808                 .help = "turn power switch to target on/off. No arguments - print status.",
 809                 .usage = "power <on/off>",
 810         },
 811         {
 812                 .name = "zy1000_version",
 813                 .mode = COMMAND_ANY,
 814                 .jim_handler = &jim_zy1000_version,
 815                 .help = "print version info for zy1000",
 816         },
 817         {
 818                 .name = "powerstatus",
 819                 .mode = COMMAND_ANY,
 820                 .jim_handler = & zylinjtag_Jim_Command_powerstatus,
 821                 .help = "print power status of target",
 822         },
 823 #ifdef CYGPKG_HAL_NIOS2
 824         {
 825                 .name = "updatezy1000firmware",
 826                 .mode = COMMAND_ANY,
 827                 .jim_handler = &jim_zy1000_writefirmware,
 828                 .help = "writes firmware to flash",
 829         },
 830 #endif
 831         COMMAND_REGISTRATION_DONE
 832 };
 833
 834
 835
 836 struct jtag_interface zy1000_interface =
 837 {
 838         .name = "ZY1000",
 839         .execute_queue = NULL,
 840         .speed = zy1000_speed,
 841         .commands = zy1000_commands,
 842         .init = zy1000_init,
 843         .quit = zy1000_quit,
 844         .khz = zy1000_khz,
 845         .speed_div = zy1000_speed_div,
 846         .power_dropout = zy1000_power_dropout,
 847         .srst_asserted = zy1000_srst_asserted,
 848 };
 849