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   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 #ifdef CYGPKG_HAL_NIOS2
  59 #include <cyg/hal/io.h>
  60 #include <cyg/firmwareutil/firmwareutil.h>
  61 #endif
  62
  63 #define ZYLIN_VERSION GIT_ZY1000_VERSION
  64 #define ZYLIN_DATE __DATE__
  65 #define ZYLIN_TIME __TIME__
  66 #define ZYLIN_OPENOCD GIT_OPENOCD_VERSION
  67 #define ZYLIN_OPENOCD_VERSION "ZY1000 " ZYLIN_VERSION " " ZYLIN_DATE
  68
  69
  70 static int zy1000_khz(int khz, int *jtag_speed)
  71 {
  72         if (khz == 0)
  73         {
  74                 *jtag_speed = 0;
  75         }
  76         else
  77         {
  78                 *jtag_speed = 64000/khz;
  79         }
  80         return ERROR_OK;
  81 }
  82
  83 static int zy1000_speed_div(int speed, int *khz)
  84 {
  85         if (speed == 0)
  86         {
  87                 *khz = 0;
  88         }
  89         else
  90         {
  91                 *khz = 64000/speed;
  92         }
  93
  94         return ERROR_OK;
  95 }
  96
  97 static bool readPowerDropout(void)
  98 {
  99         cyg_uint32 state;
 100         // sample and clear power dropout
 101         ZY1000_POKE(ZY1000_JTAG_BASE + 0x10, 0x80);
 102         ZY1000_PEEK(ZY1000_JTAG_BASE + 0x10, state);
 103         bool powerDropout;
 104         powerDropout = (state & 0x80) != 0;
 105         return powerDropout;
 106 }
 107
 108
 109 static bool readSRST(void)
 110 {
 111         cyg_uint32 state;
 112         // sample and clear SRST sensing
 113         ZY1000_POKE(ZY1000_JTAG_BASE + 0x10, 0x00000040);
 114         ZY1000_PEEK(ZY1000_JTAG_BASE + 0x10, state);
 115         bool srstAsserted;
 116         srstAsserted = (state & 0x40) != 0;
 117         return srstAsserted;
 118 }
 119
 120 static int zy1000_srst_asserted(int *srst_asserted)
 121 {
 122         *srst_asserted = readSRST();
 123         return ERROR_OK;
 124 }
 125
 126 static int zy1000_power_dropout(int *dropout)
 127 {
 128         *dropout = readPowerDropout();
 129         return ERROR_OK;
 130 }
 131
 132 void zy1000_reset(int trst, int srst)
 133 {
 134         LOG_DEBUG("zy1000 trst=%d, srst=%d", trst, srst);
 135         if (!srst)
 136         {
 137                 ZY1000_POKE(ZY1000_JTAG_BASE + 0x14, 0x00000001);
 138         }
 139         else
 140         {
 141                 /* Danger!!! if clk != 0 when in
 142                  * idle in TAP_IDLE, reset halt on str912 will fail.
 143                  */
 144                 ZY1000_POKE(ZY1000_JTAG_BASE + 0x10, 0x00000001);
 145         }
 146
 147         if (!trst)
 148         {
 149                 ZY1000_POKE(ZY1000_JTAG_BASE + 0x14, 0x00000002);
 150         }
 151         else
 152         {
 153                 /* assert reset */
 154                 ZY1000_POKE(ZY1000_JTAG_BASE + 0x10, 0x00000002);
 155         }
 156
 157         if (trst||(srst && (jtag_get_reset_config() & RESET_SRST_PULLS_TRST)))
 158         {
 159                 waitIdle();
 160                 /* we're now in the RESET state until trst is deasserted */
 161                 ZY1000_POKE(ZY1000_JTAG_BASE + 0x20, TAP_RESET);
 162         } else
 163         {
 164                 /* We'll get RCLK failure when we assert TRST, so clear any false positives here */
 165                 ZY1000_POKE(ZY1000_JTAG_BASE + 0x14, 0x400);
 166         }
 167
 168         /* wait for srst to float back up */
 169         if (!srst)
 170         {
 171                 int i;
 172                 for (i = 0; i < 1000; i++)
 173                 {
 174                         // We don't want to sense our own reset, so we clear here.
 175                         // There is of course a timing hole where we could loose
 176                         // a "real" reset.
 177                         if (!readSRST())
 178                                 break;
 179
 180                         /* wait 1ms */
 181                         alive_sleep(1);
 182                 }
 183
 184                 if (i == 1000)
 185                 {
 186                         LOG_USER("SRST didn't deassert after %dms", i);
 187                 } else if (i > 1)
 188                 {
 189                         LOG_USER("SRST took %dms to deassert", i);
 190                 }
 191         }
 192 }
 193
 194 int zy1000_speed(int speed)
 195 {
 196         if (speed == 0)
 197         {
 198                 /*0 means RCLK*/
 199                 speed = 0;
 200                 ZY1000_POKE(ZY1000_JTAG_BASE + 0x10, 0x100);
 201                 LOG_DEBUG("jtag_speed using RCLK");
 202         }
 203         else
 204         {
 205                 if (speed > 8190 || speed < 2)
 206                 {
 207                         LOG_USER("valid ZY1000 jtag_speed=[8190,2]. Divisor is 64MHz / even values between 8190-2, i.e. min 7814Hz, max 32MHz");
 208                         return ERROR_INVALID_ARGUMENTS;
 209                 }
 210
 211                 LOG_USER("jtag_speed %d => JTAG clk=%f", speed, 64.0/(float)speed);
 212                 ZY1000_POKE(ZY1000_JTAG_BASE + 0x14, 0x100);
 213                 ZY1000_POKE(ZY1000_JTAG_BASE + 0x1c, speed&~1);
 214         }
 215         return ERROR_OK;
 216 }
 217
 218 static bool savePower;
 219
 220
 221 static void setPower(bool power)
 222 {
 223         savePower = power;
 224         if (power)
 225         {
 226                 ZY1000_POKE(ZY1000_JTAG_BASE + 0x14, 0x8);
 227         } else
 228         {
 229                 ZY1000_POKE(ZY1000_JTAG_BASE + 0x10, 0x8);
 230         }
 231 }
 232
 233 COMMAND_HANDLER(handle_power_command)
 234 {
 235         switch (CMD_ARGC)
 236         {
 237         case 1: {
 238                 bool enable;
 239                 COMMAND_PARSE_ON_OFF(CMD_ARGV[0], enable);
 240                 setPower(enable);
 241                 // fall through
 242         }
 243         case 0:
 244                 LOG_INFO("Target power %s", savePower ? "on" : "off");
 245                 break;
 246         default:
 247                 return ERROR_INVALID_ARGUMENTS;
 248         }
 249
 250         return ERROR_OK;
 251 }
 252
 253
 254 /* Give TELNET a way to find out what version this is */
 255 static int jim_zy1000_version(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
 256 {
 257         if ((argc < 1) || (argc > 3))
 258                 return JIM_ERR;
 259         const char *version_str = NULL;
 260
 261         if (argc == 1)
 262         {
 263                 version_str = ZYLIN_OPENOCD_VERSION;
 264         } else
 265         {
 266                 const char *str = Jim_GetString(argv[1], NULL);
 267                 const char *str2 = NULL;
 268                 if (argc > 2)
 269                         str2 = Jim_GetString(argv[2], NULL);
 270                 if (strcmp("openocd", str) == 0)
 271                 {
 272                         version_str = ZYLIN_OPENOCD;
 273                 }
 274                 else if (strcmp("zy1000", str) == 0)
 275                 {
 276                         version_str = ZYLIN_VERSION;
 277                 }
 278                 else if (strcmp("date", str) == 0)
 279                 {
 280                         version_str = ZYLIN_DATE;
 281                 }
 282                 else if (strcmp("time", str) == 0)
 283                 {
 284                         version_str = ZYLIN_TIME;
 285                 }
 286                 else if (strcmp("pcb", str) == 0)
 287                 {
 288 #ifdef CYGPKG_HAL_NIOS2
 289                         version_str="c";
 290 #else
 291                         version_str="b";
 292 #endif
 293                 }
 294 #ifdef CYGPKG_HAL_NIOS2
 295                 else if (strcmp("fpga", str) == 0)
 296                 {
 297
 298                         /* return a list of 32 bit integers to describe the expected
 299                          * and actual FPGA
 300                          */
 301                         static char *fpga_id = "0x12345678 0x12345678 0x12345678 0x12345678";
 302                         cyg_uint32 id, timestamp;
 303                         HAL_READ_UINT32(SYSID_BASE, id);
 304                         HAL_READ_UINT32(SYSID_BASE+4, timestamp);
 305                         sprintf(fpga_id, "0x%08x 0x%08x 0x%08x 0x%08x", id, timestamp, SYSID_ID, SYSID_TIMESTAMP);
 306                         version_str = fpga_id;
 307                         if ((argc>2) && (strcmp("time", str2) == 0))
 308                         {
 309                             time_t last_mod = timestamp;
 310                             char * t = ctime (&last_mod) ;
 311                             t[strlen(t)-1] = 0;
 312                             version_str = t;
 313                         }
 314                 }
 315 #endif
 316
 317                 else
 318                 {
 319                         return JIM_ERR;
 320                 }
 321         }
 322
 323         Jim_SetResult(interp, Jim_NewStringObj(interp, version_str, -1));
 324
 325         return JIM_OK;
 326 }
 327
 328
 329 #ifdef CYGPKG_HAL_NIOS2
 330
 331
 332 struct info_forward
 333 {
 334         void *data;
 335         struct cyg_upgrade_info *upgraded_file;
 336 };
 337
 338 static void report_info(void *data, const char * format, va_list args)
 339 {
 340         char *s = alloc_vprintf(format, args);
 341         LOG_USER_N("%s", s);
 342         free(s);
 343 }
 344
 345 struct cyg_upgrade_info firmware_info =
 346 {
 347                 (cyg_uint8 *)0x84000000,
 348                 "/ram/firmware.phi",
 349                 "Firmware",
 350                 0x0300000,
 351                 0x1f00000 -
 352                 0x0300000,
 353                 "ZylinNiosFirmware\n",
 354                 report_info,
 355 };
 356
 357 static int jim_zy1000_writefirmware(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
 358 {
 359         if (argc != 2)
 360                 return JIM_ERR;
 361
 362         int length;
 363         const char *str = Jim_GetString(argv[1], &length);
 364
 365         /* */
 366         int tmpFile;
 367         if ((tmpFile = open(firmware_info.file, O_RDWR | O_CREAT | O_TRUNC)) <= 0)
 368         {
 369                 return JIM_ERR;
 370         }
 371         bool success;
 372         success = write(tmpFile, str, length) == length;
 373         close(tmpFile);
 374         if (!success)
 375                 return JIM_ERR;
 376
 377         if (!cyg_firmware_upgrade(NULL, firmware_info))
 378                 return JIM_ERR;
 379
 380         return JIM_OK;
 381 }
 382 #endif
 383
 384 static int
 385 zylinjtag_Jim_Command_powerstatus(Jim_Interp *interp,
 386                                                                    int argc,
 387                 Jim_Obj * const *argv)
 388 {
 389         if (argc != 1)
 390         {
 391                 Jim_WrongNumArgs(interp, 1, argv, "powerstatus");
 392                 return JIM_ERR;
 393         }
 394
 395         cyg_uint32 status;
 396         ZY1000_PEEK(ZY1000_JTAG_BASE + 0x10, status);
 397
 398         Jim_SetResult(interp, Jim_NewIntObj(interp, (status&0x80) != 0));
 399
 400         return JIM_OK;
 401 }
 402
 403
 404
 405
 406 int zy1000_init(void)
 407 {
 408         LOG_USER("%s", ZYLIN_OPENOCD_VERSION);
 409
 410         ZY1000_POKE(ZY1000_JTAG_BASE + 0x10, 0x30); // Turn on LED1 & LED2
 411
 412         setPower(true); // on by default
 413
 414
 415          /* deassert resets. Important to avoid infinite loop waiting for SRST to deassert */
 416         zy1000_reset(0, 0);
 417         zy1000_speed(jtag_get_speed());
 418
 419         return ERROR_OK;
 420 }
 421
 422 int zy1000_quit(void)
 423 {
 424
 425         return ERROR_OK;
 426 }
 427
 428
 429
 430 int interface_jtag_execute_queue(void)
 431 {
 432         cyg_uint32 empty;
 433
 434         waitIdle();
 435         ZY1000_PEEK(ZY1000_JTAG_BASE + 0x10, empty);
 436         /* clear JTAG error register */
 437         ZY1000_POKE(ZY1000_JTAG_BASE + 0x14, 0x400);
 438
 439         if ((empty&0x400) != 0)
 440         {
 441                 LOG_WARNING("RCLK timeout");
 442                 /* the error is informative only as we don't want to break the firmware if there
 443                  * is a false positive.
 444                  */
 445 //              return ERROR_FAIL;
 446         }
 447         return ERROR_OK;
 448 }
 449
 450
 451
 452
 453
 454 static cyg_uint32 getShiftValue(void)
 455 {
 456         cyg_uint32 value;
 457         waitIdle();
 458         ZY1000_PEEK(ZY1000_JTAG_BASE + 0xc, value);
 459         VERBOSE(LOG_INFO("getShiftValue %08x", value));
 460         return value;
 461 }
 462 #if 0
 463 static cyg_uint32 getShiftValueFlip(void)
 464 {
 465         cyg_uint32 value;
 466         waitIdle();
 467         ZY1000_PEEK(ZY1000_JTAG_BASE + 0x18, value);
 468         VERBOSE(LOG_INFO("getShiftValue %08x (flipped)", value));
 469         return value;
 470 }
 471 #endif
 472
 473 #if 0
 474 static void shiftValueInnerFlip(const tap_state_t state, const tap_state_t endState, int repeat, cyg_uint32 value)
 475 {
 476         VERBOSE(LOG_INFO("shiftValueInner %s %s %d %08x (flipped)", tap_state_name(state), tap_state_name(endState), repeat, value));
 477         cyg_uint32 a,b;
 478         a = state;
 479         b = endState;
 480         ZY1000_POKE(ZY1000_JTAG_BASE + 0xc, value);
 481         ZY1000_POKE(ZY1000_JTAG_BASE + 0x8, (1 << 15) | (repeat << 8) | (a << 4) | b);
 482         VERBOSE(getShiftValueFlip());
 483 }
 484 #endif
 485
 486 static void gotoEndState(tap_state_t end_state)
 487 {
 488         setCurrentState(end_state);
 489 }
 490
 491 static __inline void scanFields(int num_fields, const struct scan_field *fields, tap_state_t shiftState, int pause)
 492 {
 493         int i;
 494         int j;
 495         int k;
 496
 497         for (i = 0; i < num_fields; i++)
 498         {
 499                 cyg_uint32 value;
 500
 501                 uint8_t *inBuffer = NULL;
 502
 503
 504                 // figure out where to store the input data
 505                 int num_bits = fields[i].num_bits;
 506                 if (fields[i].in_value != NULL)
 507                 {
 508                         inBuffer = fields[i].in_value;
 509                 }
 510
 511                 // here we shuffle N bits out/in
 512                 j = 0;
 513                 while (j < num_bits)
 514                 {
 515                         tap_state_t pause_state;
 516                         int l;
 517                         k = num_bits-j;
 518                         pause_state = (shiftState == TAP_DRSHIFT)?TAP_DRSHIFT:TAP_IRSHIFT;
 519                         if (k > 32)
 520                         {
 521                                 k = 32;
 522                                 /* we have more to shift out */
 523                         } else if (pause&&(i == num_fields-1))
 524                         {
 525                                 /* this was the last to shift out this time */
 526                                 pause_state = (shiftState==TAP_DRSHIFT)?TAP_DRPAUSE:TAP_IRPAUSE;
 527                         }
 528
 529                         // we have (num_bits + 7)/8 bytes of bits to toggle out.
 530                         // bits are pushed out LSB to MSB
 531                         value = 0;
 532                         if (fields[i].out_value != NULL)
 533                         {
 534                                 for (l = 0; l < k; l += 8)
 535                                 {
 536                                         value|=fields[i].out_value[(j + l)/8]<<l;
 537                                 }
 538                         }
 539                         /* mask away unused bits for easier debugging */
 540                         if (k < 32)
 541                         {
 542                                 value&=~(((uint32_t)0xffffffff) << k);
 543                         } else
 544                         {
 545                                 /* Shifting by >= 32 is not defined by the C standard
 546                                  * and will in fact shift by &0x1f bits on nios */
 547                         }
 548
 549                         shiftValueInner(shiftState, pause_state, k, value);
 550
 551                         if (inBuffer != NULL)
 552                         {
 553                                 // data in, LSB to MSB
 554                                 value = getShiftValue();
 555                                 // we're shifting in data to MSB, shift data to be aligned for returning the value
 556                                 value >>= 32-k;
 557
 558                                 for (l = 0; l < k; l += 8)
 559                                 {
 560                                         inBuffer[(j + l)/8]=(value >> l)&0xff;
 561                                 }
 562                         }
 563                         j += k;
 564                 }
 565         }
 566 }
 567
 568 int interface_jtag_add_ir_scan(int num_fields, const struct scan_field *fields, tap_state_t state)
 569 {
 570
 571         int j;
 572         int scan_size = 0;
 573         struct jtag_tap *tap, *nextTap;
 574         for (tap = jtag_tap_next_enabled(NULL); tap!= NULL; tap = nextTap)
 575         {
 576                 nextTap = jtag_tap_next_enabled(tap);
 577                 int pause = (nextTap==NULL);
 578
 579                 int found = 0;
 580
 581                 scan_size = tap->ir_length;
 582
 583                 /* search the list */
 584                 for (j = 0; j < num_fields; j++)
 585                 {
 586                         if (tap == fields[j].tap)
 587                         {
 588                                 found = 1;
 589
 590                                 scanFields(1, fields + j, TAP_IRSHIFT, pause);
 591                                 /* update device information */
 592                                 buf_cpy(fields[j].out_value, tap->cur_instr, scan_size);
 593
 594                                 tap->bypass = 0;
 595                                 break;
 596                         }
 597                 }
 598
 599                 if (!found)
 600                 {
 601                         /* if a device isn't listed, set it to BYPASS */
 602                         uint8_t ones[]={0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff};
 603
 604                         struct scan_field tmp;
 605                         memset(&tmp, 0, sizeof(tmp));
 606                         tmp.out_value = ones;
 607                         tmp.num_bits = scan_size;
 608                         scanFields(1, &tmp, TAP_IRSHIFT, pause);
 609                         /* update device information */
 610                         buf_cpy(tmp.out_value, tap->cur_instr, scan_size);
 611                         tap->bypass = 1;
 612                 }
 613         }
 614         gotoEndState(state);
 615
 616         return ERROR_OK;
 617 }
 618
 619
 620
 621
 622
 623 int interface_jtag_add_plain_ir_scan(int num_fields, const struct scan_field *fields, tap_state_t state)
 624 {
 625         scanFields(num_fields, fields, TAP_IRSHIFT, 1);
 626         gotoEndState(state);
 627
 628         return ERROR_OK;
 629 }
 630
 631 int interface_jtag_add_dr_scan(int num_fields, const struct scan_field *fields, tap_state_t state)
 632 {
 633
 634         int j;
 635         struct jtag_tap *tap, *nextTap;
 636         for (tap = jtag_tap_next_enabled(NULL); tap!= NULL; tap = nextTap)
 637         {
 638                 nextTap = jtag_tap_next_enabled(tap);
 639                 int found = 0;
 640                 int pause = (nextTap==NULL);
 641
 642                 for (j = 0; j < num_fields; j++)
 643                 {
 644                         if (tap == fields[j].tap)
 645                         {
 646                                 found = 1;
 647
 648                                 scanFields(1, fields+j, TAP_DRSHIFT, pause);
 649                         }
 650                 }
 651                 if (!found)
 652                 {
 653                         struct scan_field tmp;
 654                         /* program the scan field to 1 bit length, and ignore it's value */
 655                         tmp.num_bits = 1;
 656                         tmp.out_value = NULL;
 657                         tmp.in_value = NULL;
 658
 659                         scanFields(1, &tmp, TAP_DRSHIFT, pause);
 660                 }
 661                 else
 662                 {
 663                 }
 664         }
 665         gotoEndState(state);
 666         return ERROR_OK;
 667 }
 668
 669 int interface_jtag_add_plain_dr_scan(int num_fields, const struct scan_field *fields, tap_state_t state)
 670 {
 671         scanFields(num_fields, fields, TAP_DRSHIFT, 1);
 672         gotoEndState(state);
 673         return ERROR_OK;
 674 }
 675
 676
 677 int interface_jtag_add_tlr()
 678 {
 679         setCurrentState(TAP_RESET);
 680         return ERROR_OK;
 681 }
 682
 683
 684
 685
 686 int interface_jtag_add_reset(int req_trst, int req_srst)
 687 {
 688         zy1000_reset(req_trst, req_srst);
 689         return ERROR_OK;
 690 }
 691
 692 static int zy1000_jtag_add_clocks(int num_cycles, tap_state_t state, tap_state_t clockstate)
 693 {
 694         /* num_cycles can be 0 */
 695         setCurrentState(clockstate);
 696
 697         /* execute num_cycles, 32 at the time. */
 698         int i;
 699         for (i = 0; i < num_cycles; i += 32)
 700         {
 701                 int num;
 702                 num = 32;
 703                 if (num_cycles-i < num)
 704                 {
 705                         num = num_cycles-i;
 706                 }
 707                 shiftValueInner(clockstate, clockstate, num, 0);
 708         }
 709
 710 #if !TEST_MANUAL()
 711         /* finish in end_state */
 712         setCurrentState(state);
 713 #else
 714         tap_state_t t = TAP_IDLE;
 715         /* test manual drive code on any target */
 716         int tms;
 717         uint8_t tms_scan = tap_get_tms_path(t, state);
 718         int tms_count = tap_get_tms_path_len(tap_get_state(), tap_get_end_state());
 719
 720         for (i = 0; i < tms_count; i++)
 721         {
 722                 tms = (tms_scan >> i) & 1;
 723                 waitIdle();
 724                 ZY1000_POKE(ZY1000_JTAG_BASE + 0x28,  tms);
 725         }
 726         waitIdle();
 727         ZY1000_POKE(ZY1000_JTAG_BASE + 0x20, state);
 728 #endif
 729
 730
 731         return ERROR_OK;
 732 }
 733
 734 int interface_jtag_add_runtest(int num_cycles, tap_state_t state)
 735 {
 736         return zy1000_jtag_add_clocks(num_cycles, state, TAP_IDLE);
 737 }
 738
 739 int interface_jtag_add_clocks(int num_cycles)
 740 {
 741         return zy1000_jtag_add_clocks(num_cycles, cmd_queue_cur_state, cmd_queue_cur_state);
 742 }
 743
 744 int interface_jtag_add_sleep(uint32_t us)
 745 {
 746         jtag_sleep(us);
 747         return ERROR_OK;
 748 }
 749
 750 int interface_jtag_add_pathmove(int num_states, const tap_state_t *path)
 751 {
 752         int state_count;
 753         int tms = 0;
 754
 755         /*wait for the fifo to be empty*/
 756         waitIdle();
 757
 758         state_count = 0;
 759
 760         tap_state_t cur_state = cmd_queue_cur_state;
 761
 762         while (num_states)
 763         {
 764                 if (tap_state_transition(cur_state, false) == path[state_count])
 765                 {
 766                         tms = 0;
 767                 }
 768                 else if (tap_state_transition(cur_state, true) == path[state_count])
 769                 {
 770                         tms = 1;
 771                 }
 772                 else
 773                 {
 774                         LOG_ERROR("BUG: %s -> %s isn't a valid TAP transition", tap_state_name(cur_state), tap_state_name(path[state_count]));
 775                         exit(-1);
 776                 }
 777
 778                 waitIdle();
 779                 ZY1000_POKE(ZY1000_JTAG_BASE + 0x28,  tms);
 780
 781                 cur_state = path[state_count];
 782                 state_count++;
 783                 num_states--;
 784         }
 785
 786         waitIdle();
 787         ZY1000_POKE(ZY1000_JTAG_BASE + 0x20,  cur_state);
 788         return ERROR_OK;
 789 }
 790
 791
 792
 793 void embeddedice_write_dcc(struct jtag_tap *tap, int reg_addr, uint8_t *buffer, int little, int count)
 794 {
 795 //      static int const reg_addr = 0x5;
 796         tap_state_t end_state = jtag_get_end_state();
 797         if (jtag_tap_next_enabled(jtag_tap_next_enabled(NULL)) == NULL)
 798         {
 799                 /* better performance via code duplication */
 800                 if (little)
 801                 {
 802                         int i;
 803                         for (i = 0; i < count; i++)
 804                         {
 805                                 shiftValueInner(TAP_DRSHIFT, TAP_DRSHIFT, 32, fast_target_buffer_get_u32(buffer, 1));
 806                                 shiftValueInner(TAP_DRSHIFT, end_state, 6, reg_addr | (1 << 5));
 807                                 buffer += 4;
 808                         }
 809                 } else
 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, 0));
 815                                 shiftValueInner(TAP_DRSHIFT, end_state, 6, reg_addr | (1 << 5));
 816                                 buffer += 4;
 817                         }
 818                 }
 819         }
 820         else
 821         {
 822                 int i;
 823                 for (i = 0; i < count; i++)
 824                 {
 825                         embeddedice_write_reg_inner(tap, reg_addr, fast_target_buffer_get_u32(buffer, little));
 826                         buffer += 4;
 827                 }
 828         }
 829 }
 830
 831
 832 static const struct command_registration zy1000_commands[] = {
 833         {
 834                 .name = "power",
 835                 .handler = &handle_power_command,
 836                 .mode = COMMAND_ANY,
 837                 .help = "turn power switch to target on/off. No arguments - print status.",
 838                 .usage = "power <on/off>",
 839         },
 840         {
 841                 .name = "zy1000_version",
 842                 .mode = COMMAND_ANY,
 843                 .jim_handler = &jim_zy1000_version,
 844                 .help = "print version info for zy1000",
 845         },
 846         {
 847                 .name = "powerstatus",
 848                 .mode = COMMAND_ANY,
 849                 .jim_handler = & zylinjtag_Jim_Command_powerstatus,
 850                 .help = "print power status of target",
 851         },
 852 #ifdef CYGPKG_HAL_NIOS2
 853         {
 854                 .name = "updatezy1000firmware",
 855                 .mode = COMMAND_ANY,
 856                 .jim_handler = &jim_zy1000_writefirmware,
 857                 .help = "writes firmware to flash",
 858         },
 859 #endif
 860         COMMAND_REGISTRATION_DONE
 861 };
 862
 863
 864
 865 struct jtag_interface zy1000_interface =
 866 {
 867         .name = "ZY1000",
 868         .execute_queue = NULL,
 869         .speed = zy1000_speed,
 870         .commands = zy1000_commands,
 871         .init = zy1000_init,
 872         .quit = zy1000_quit,
 873         .khz = zy1000_khz,
 874         .speed_div = zy1000_speed_div,
 875         .power_dropout = zy1000_power_dropout,
 876         .srst_asserted = zy1000_srst_asserted,
 877 };
 878