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                 if (strcmp(args[0], "on") == 0)
 240                 {
 241                         setPower(1);
 242                 }
 243                 else if (strcmp(args[0], "off") == 0)
 244                 {
 245                         setPower(0);
 246                 } else
 247                 {
 248                         command_print(cmd_ctx, "arg is \"on\" or \"off\"");
 249                         return ERROR_INVALID_ARGUMENTS;
 250                 }
 251         }
 252
 253         command_print(cmd_ctx, "Target power %s", savePower ? "on" : "off");
 254
 255         return ERROR_OK;
 256 }
 257
 258
 259 /* Give TELNET a way to find out what version this is */
 260 static int jim_zy1000_version(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
 261 {
 262         if ((argc < 1) || (argc > 3))
 263                 return JIM_ERR;
 264         const char *version_str = NULL;
 265
 266         if (argc == 1)
 267         {
 268                 version_str = ZYLIN_OPENOCD_VERSION;
 269         } else
 270         {
 271                 const char *str = Jim_GetString(argv[1], NULL);
 272                 const char *str2 = NULL;
 273                 if (argc > 2)
 274                         str2 = Jim_GetString(argv[2], NULL);
 275                 if (strcmp("openocd", str) == 0)
 276                 {
 277                         version_str = ZYLIN_OPENOCD;
 278                 }
 279                 else if (strcmp("zy1000", str) == 0)
 280                 {
 281                         version_str = ZYLIN_VERSION;
 282                 }
 283                 else if (strcmp("date", str) == 0)
 284                 {
 285                         version_str = ZYLIN_DATE;
 286                 }
 287                 else if (strcmp("time", str) == 0)
 288                 {
 289                         version_str = ZYLIN_TIME;
 290                 }
 291                 else if (strcmp("pcb", str) == 0)
 292                 {
 293 #ifdef CYGPKG_HAL_NIOS2
 294                         version_str="c";
 295 #else
 296                         version_str="b";
 297 #endif
 298                 }
 299 #ifdef CYGPKG_HAL_NIOS2
 300                 else if (strcmp("fpga", str) == 0)
 301                 {
 302
 303                         /* return a list of 32 bit integers to describe the expected
 304                          * and actual FPGA
 305                          */
 306                         static char *fpga_id = "0x12345678 0x12345678 0x12345678 0x12345678";
 307                         cyg_uint32 id, timestamp;
 308                         HAL_READ_UINT32(SYSID_BASE, id);
 309                         HAL_READ_UINT32(SYSID_BASE+4, timestamp);
 310                         sprintf(fpga_id, "0x%08x 0x%08x 0x%08x 0x%08x", id, timestamp, SYSID_ID, SYSID_TIMESTAMP);
 311                         version_str = fpga_id;
 312                         if ((argc>2) && (strcmp("time", str2) == 0))
 313                         {
 314                             time_t last_mod = timestamp;
 315                             char * t = ctime (&last_mod) ;
 316                             t[strlen(t)-1] = 0;
 317                             version_str = t;
 318                         }
 319                 }
 320 #endif
 321
 322                 else
 323                 {
 324                         return JIM_ERR;
 325                 }
 326         }
 327
 328         Jim_SetResult(interp, Jim_NewStringObj(interp, version_str, -1));
 329
 330         return JIM_OK;
 331 }
 332
 333
 334 #ifdef CYGPKG_HAL_NIOS2
 335 static int jim_zy1000_writefirmware(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
 336 {
 337         if (argc != 2)
 338                 return JIM_ERR;
 339
 340         int length;
 341         int stat;
 342         const char *str = Jim_GetString(argv[1], &length);
 343
 344         /* BUG!!!! skip header! */
 345         void *firmware_address=0x4000000;
 346         int firmware_length=0x100000;
 347
 348         if (length>firmware_length)
 349                 return JIM_ERR;
 350
 351         void *err_addr;
 352
 353     if ((stat = flash_erase((void *)firmware_address, firmware_length, (void **)&err_addr)) != 0)
 354     {
 355         return JIM_ERR;
 356     }
 357
 358     if ((stat = flash_program(firmware_address, str, length, (void **)&err_addr)) != 0)
 359         return JIM_ERR;
 360
 361     return JIM_OK;
 362 }
 363 #endif
 364
 365 static int
 366 zylinjtag_Jim_Command_powerstatus(Jim_Interp *interp,
 367                                                                    int argc,
 368                 Jim_Obj * const *argv)
 369 {
 370         if (argc != 1)
 371         {
 372                 Jim_WrongNumArgs(interp, 1, argv, "powerstatus");
 373                 return JIM_ERR;
 374         }
 375
 376         cyg_uint32 status;
 377         ZY1000_PEEK(ZY1000_JTAG_BASE + 0x10, status);
 378
 379         Jim_SetResult(interp, Jim_NewIntObj(interp, (status&0x80) != 0));
 380
 381         return JIM_OK;
 382 }
 383
 384 int zy1000_register_commands(struct command_context *cmd_ctx)
 385 {
 386         register_command(cmd_ctx, NULL, "power", handle_power_command, COMMAND_ANY,
 387                         "power <on/off> - turn power switch to target on/off. No arguments - print status.");
 388
 389         Jim_CreateCommand(interp, "zy1000_version", jim_zy1000_version, NULL, NULL);
 390
 391
 392         Jim_CreateCommand(interp, "powerstatus", zylinjtag_Jim_Command_powerstatus, NULL, NULL);
 393
 394 #ifdef CYGPKG_HAL_NIOS2
 395         Jim_CreateCommand(interp, "updatezy1000firmware", jim_zy1000_writefirmware, NULL, NULL);
 396 #endif
 397
 398
 399         return ERROR_OK;
 400 }
 401
 402
 403
 404
 405 int zy1000_init(void)
 406 {
 407         LOG_USER("%s", ZYLIN_OPENOCD_VERSION);
 408
 409         ZY1000_POKE(ZY1000_JTAG_BASE + 0x10, 0x30); // Turn on LED1 & LED2
 410
 411         setPower(true); // on by default
 412
 413
 414          /* deassert resets. Important to avoid infinite loop waiting for SRST to deassert */
 415         zy1000_reset(0, 0);
 416         zy1000_speed(jtag_get_speed());
 417
 418         return ERROR_OK;
 419 }
 420
 421 int zy1000_quit(void)
 422 {
 423
 424         return ERROR_OK;
 425 }
 426
 427
 428
 429 int interface_jtag_execute_queue(void)
 430 {
 431         cyg_uint32 empty;
 432
 433         waitIdle();
 434         ZY1000_PEEK(ZY1000_JTAG_BASE + 0x10, empty);
 435         /* clear JTAG error register */
 436         ZY1000_POKE(ZY1000_JTAG_BASE + 0x14, 0x400);
 437
 438         if ((empty&0x400) != 0)
 439         {
 440                 LOG_WARNING("RCLK timeout");
 441                 /* the error is informative only as we don't want to break the firmware if there
 442                  * is a false positive.
 443                  */
 444 //              return ERROR_FAIL;
 445         }
 446         return ERROR_OK;
 447 }
 448
 449
 450
 451
 452
 453 static cyg_uint32 getShiftValue(void)
 454 {
 455         cyg_uint32 value;
 456         waitIdle();
 457         ZY1000_PEEK(ZY1000_JTAG_BASE + 0xc, value);
 458         VERBOSE(LOG_INFO("getShiftValue %08x", value));
 459         return value;
 460 }
 461 #if 0
 462 static cyg_uint32 getShiftValueFlip(void)
 463 {
 464         cyg_uint32 value;
 465         waitIdle();
 466         ZY1000_PEEK(ZY1000_JTAG_BASE + 0x18, value);
 467         VERBOSE(LOG_INFO("getShiftValue %08x (flipped)", value));
 468         return value;
 469 }
 470 #endif
 471
 472 #if 0
 473 static void shiftValueInnerFlip(const tap_state_t state, const tap_state_t endState, int repeat, cyg_uint32 value)
 474 {
 475         VERBOSE(LOG_INFO("shiftValueInner %s %s %d %08x (flipped)", tap_state_name(state), tap_state_name(endState), repeat, value));
 476         cyg_uint32 a,b;
 477         a = state;
 478         b = endState;
 479         ZY1000_POKE(ZY1000_JTAG_BASE + 0xc, value);
 480         ZY1000_POKE(ZY1000_JTAG_BASE + 0x8, (1 << 15) | (repeat << 8) | (a << 4) | b);
 481         VERBOSE(getShiftValueFlip());
 482 }
 483 #endif
 484
 485 static void gotoEndState(tap_state_t end_state)
 486 {
 487         setCurrentState(end_state);
 488 }
 489
 490 static __inline void scanFields(int num_fields, const struct scan_field *fields, tap_state_t shiftState, int pause)
 491 {
 492         int i;
 493         int j;
 494         int k;
 495
 496         for (i = 0; i < num_fields; i++)
 497         {
 498                 cyg_uint32 value;
 499
 500                 uint8_t *inBuffer = NULL;
 501
 502
 503                 // figure out where to store the input data
 504                 int num_bits = fields[i].num_bits;
 505                 if (fields[i].in_value != NULL)
 506                 {
 507                         inBuffer = fields[i].in_value;
 508                 }
 509
 510                 // here we shuffle N bits out/in
 511                 j = 0;
 512                 while (j < num_bits)
 513                 {
 514                         tap_state_t pause_state;
 515                         int l;
 516                         k = num_bits-j;
 517                         pause_state = (shiftState == TAP_DRSHIFT)?TAP_DRSHIFT:TAP_IRSHIFT;
 518                         if (k > 32)
 519                         {
 520                                 k = 32;
 521                                 /* we have more to shift out */
 522                         } else if (pause&&(i == num_fields-1))
 523                         {
 524                                 /* this was the last to shift out this time */
 525                                 pause_state = (shiftState==TAP_DRSHIFT)?TAP_DRPAUSE:TAP_IRPAUSE;
 526                         }
 527
 528                         // we have (num_bits + 7)/8 bytes of bits to toggle out.
 529                         // bits are pushed out LSB to MSB
 530                         value = 0;
 531                         if (fields[i].out_value != NULL)
 532                         {
 533                                 for (l = 0; l < k; l += 8)
 534                                 {
 535                                         value|=fields[i].out_value[(j + l)/8]<<l;
 536                                 }
 537                         }
 538                         /* mask away unused bits for easier debugging */
 539                         if (k < 32)
 540                         {
 541                                 value&=~(((uint32_t)0xffffffff) << k);
 542                         } else
 543                         {
 544                                 /* Shifting by >= 32 is not defined by the C standard
 545                                  * and will in fact shift by &0x1f bits on nios */
 546                         }
 547
 548                         shiftValueInner(shiftState, pause_state, k, value);
 549
 550                         if (inBuffer != NULL)
 551                         {
 552                                 // data in, LSB to MSB
 553                                 value = getShiftValue();
 554                                 // we're shifting in data to MSB, shift data to be aligned for returning the value
 555                                 value >>= 32-k;
 556
 557                                 for (l = 0; l < k; l += 8)
 558                                 {
 559                                         inBuffer[(j + l)/8]=(value >> l)&0xff;
 560                                 }
 561                         }
 562                         j += k;
 563                 }
 564         }
 565 }
 566
 567 int interface_jtag_add_ir_scan(int num_fields, const struct scan_field *fields, tap_state_t state)
 568 {
 569
 570         int j;
 571         int scan_size = 0;
 572         struct jtag_tap *tap, *nextTap;
 573         for (tap = jtag_tap_next_enabled(NULL); tap!= NULL; tap = nextTap)
 574         {
 575                 nextTap = jtag_tap_next_enabled(tap);
 576                 int pause = (nextTap==NULL);
 577
 578                 int found = 0;
 579
 580                 scan_size = tap->ir_length;
 581
 582                 /* search the list */
 583                 for (j = 0; j < num_fields; j++)
 584                 {
 585                         if (tap == fields[j].tap)
 586                         {
 587                                 found = 1;
 588
 589                                 scanFields(1, fields + j, TAP_IRSHIFT, pause);
 590                                 /* update device information */
 591                                 buf_cpy(fields[j].out_value, tap->cur_instr, scan_size);
 592
 593                                 tap->bypass = 0;
 594                                 break;
 595                         }
 596                 }
 597
 598                 if (!found)
 599                 {
 600                         /* if a device isn't listed, set it to BYPASS */
 601                         uint8_t ones[]={0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff};
 602
 603                         struct scan_field tmp;
 604                         memset(&tmp, 0, sizeof(tmp));
 605                         tmp.out_value = ones;
 606                         tmp.num_bits = scan_size;
 607                         scanFields(1, &tmp, TAP_IRSHIFT, pause);
 608                         /* update device information */
 609                         buf_cpy(tmp.out_value, tap->cur_instr, scan_size);
 610                         tap->bypass = 1;
 611                 }
 612         }
 613         gotoEndState(state);
 614
 615         return ERROR_OK;
 616 }
 617
 618
 619
 620
 621
 622 int interface_jtag_add_plain_ir_scan(int num_fields, const struct scan_field *fields, tap_state_t state)
 623 {
 624         scanFields(num_fields, fields, TAP_IRSHIFT, 1);
 625         gotoEndState(state);
 626
 627         return ERROR_OK;
 628 }
 629
 630 int interface_jtag_add_dr_scan(int num_fields, const struct scan_field *fields, tap_state_t state)
 631 {
 632
 633         int j;
 634         struct jtag_tap *tap, *nextTap;
 635         for (tap = jtag_tap_next_enabled(NULL); tap!= NULL; tap = nextTap)
 636         {
 637                 nextTap = jtag_tap_next_enabled(tap);
 638                 int found = 0;
 639                 int pause = (nextTap==NULL);
 640
 641                 for (j = 0; j < num_fields; j++)
 642                 {
 643                         if (tap == fields[j].tap)
 644                         {
 645                                 found = 1;
 646
 647                                 scanFields(1, fields+j, TAP_DRSHIFT, pause);
 648                         }
 649                 }
 650                 if (!found)
 651                 {
 652                         struct scan_field tmp;
 653                         /* program the scan field to 1 bit length, and ignore it's value */
 654                         tmp.num_bits = 1;
 655                         tmp.out_value = NULL;
 656                         tmp.in_value = NULL;
 657
 658                         scanFields(1, &tmp, TAP_DRSHIFT, pause);
 659                 }
 660                 else
 661                 {
 662                 }
 663         }
 664         gotoEndState(state);
 665         return ERROR_OK;
 666 }
 667
 668 int interface_jtag_add_plain_dr_scan(int num_fields, const struct scan_field *fields, tap_state_t state)
 669 {
 670         scanFields(num_fields, fields, TAP_DRSHIFT, 1);
 671         gotoEndState(state);
 672         return ERROR_OK;
 673 }
 674
 675
 676 int interface_jtag_add_tlr()
 677 {
 678         setCurrentState(TAP_RESET);
 679         return ERROR_OK;
 680 }
 681
 682
 683
 684
 685 int interface_jtag_add_reset(int req_trst, int req_srst)
 686 {
 687         zy1000_reset(req_trst, req_srst);
 688         return ERROR_OK;
 689 }
 690
 691 static int zy1000_jtag_add_clocks(int num_cycles, tap_state_t state, tap_state_t clockstate)
 692 {
 693         /* num_cycles can be 0 */
 694         setCurrentState(clockstate);
 695
 696         /* execute num_cycles, 32 at the time. */
 697         int i;
 698         for (i = 0; i < num_cycles; i += 32)
 699         {
 700                 int num;
 701                 num = 32;
 702                 if (num_cycles-i < num)
 703                 {
 704                         num = num_cycles-i;
 705                 }
 706                 shiftValueInner(clockstate, clockstate, num, 0);
 707         }
 708
 709 #if !TEST_MANUAL()
 710         /* finish in end_state */
 711         setCurrentState(state);
 712 #else
 713         tap_state_t t = TAP_IDLE;
 714         /* test manual drive code on any target */
 715         int tms;
 716         uint8_t tms_scan = tap_get_tms_path(t, state);
 717         int tms_count = tap_get_tms_path_len(tap_get_state(), tap_get_end_state());
 718
 719         for (i = 0; i < tms_count; i++)
 720         {
 721                 tms = (tms_scan >> i) & 1;
 722                 waitIdle();
 723                 ZY1000_POKE(ZY1000_JTAG_BASE + 0x28,  tms);
 724         }
 725         waitIdle();
 726         ZY1000_POKE(ZY1000_JTAG_BASE + 0x20, state);
 727 #endif
 728
 729
 730         return ERROR_OK;
 731 }
 732
 733 int interface_jtag_add_runtest(int num_cycles, tap_state_t state)
 734 {
 735         return zy1000_jtag_add_clocks(num_cycles, state, TAP_IDLE);
 736 }
 737
 738 int interface_jtag_add_clocks(int num_cycles)
 739 {
 740         return zy1000_jtag_add_clocks(num_cycles, cmd_queue_cur_state, cmd_queue_cur_state);
 741 }
 742
 743 int interface_jtag_add_sleep(uint32_t us)
 744 {
 745         jtag_sleep(us);
 746         return ERROR_OK;
 747 }
 748
 749 int interface_jtag_add_pathmove(int num_states, const tap_state_t *path)
 750 {
 751         int state_count;
 752         int tms = 0;
 753
 754         /*wait for the fifo to be empty*/
 755         waitIdle();
 756
 757         state_count = 0;
 758
 759         tap_state_t cur_state = cmd_queue_cur_state;
 760
 761         while (num_states)
 762         {
 763                 if (tap_state_transition(cur_state, false) == path[state_count])
 764                 {
 765                         tms = 0;
 766                 }
 767                 else if (tap_state_transition(cur_state, true) == path[state_count])
 768                 {
 769                         tms = 1;
 770                 }
 771                 else
 772                 {
 773                         LOG_ERROR("BUG: %s -> %s isn't a valid TAP transition", tap_state_name(cur_state), tap_state_name(path[state_count]));
 774                         exit(-1);
 775                 }
 776
 777                 waitIdle();
 778                 ZY1000_POKE(ZY1000_JTAG_BASE + 0x28,  tms);
 779
 780                 cur_state = path[state_count];
 781                 state_count++;
 782                 num_states--;
 783         }
 784
 785         waitIdle();
 786         ZY1000_POKE(ZY1000_JTAG_BASE + 0x20,  cur_state);
 787         return ERROR_OK;
 788 }
 789
 790
 791
 792 void embeddedice_write_dcc(struct jtag_tap *tap, int reg_addr, uint8_t *buffer, int little, int count)
 793 {
 794 //      static int const reg_addr = 0x5;
 795         tap_state_t end_state = jtag_get_end_state();
 796         if (jtag_tap_next_enabled(jtag_tap_next_enabled(NULL)) == NULL)
 797         {
 798                 /* better performance via code duplication */
 799                 if (little)
 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, 1));
 805                                 shiftValueInner(TAP_DRSHIFT, end_state, 6, reg_addr | (1 << 5));
 806                                 buffer += 4;
 807                         }
 808                 } else
 809                 {
 810                         int i;
 811                         for (i = 0; i < count; i++)
 812                         {
 813                                 shiftValueInner(TAP_DRSHIFT, TAP_DRSHIFT, 32, fast_target_buffer_get_u32(buffer, 0));
 814                                 shiftValueInner(TAP_DRSHIFT, end_state, 6, reg_addr | (1 << 5));
 815                                 buffer += 4;
 816                         }
 817                 }
 818         }
 819         else
 820         {
 821                 int i;
 822                 for (i = 0; i < count; i++)
 823                 {
 824                         embeddedice_write_reg_inner(tap, reg_addr, fast_target_buffer_get_u32(buffer, little));
 825                         buffer += 4;
 826                 }
 827         }
 828 }
 829
 830