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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
 136         /* flush the JTAG FIFO. Not flushing the queue before messing with
 137          * reset has such interesting bugs as causing hard to reproduce
 138          * RCLK bugs as RCLK will stop responding when TRST is asserted
 139          */
 140         waitIdle();
 141
 142         if (!srst)
 143         {
 144                 ZY1000_POKE(ZY1000_JTAG_BASE + 0x14, 0x00000001);
 145         }
 146         else
 147         {
 148                 /* Danger!!! if clk != 0 when in
 149                  * idle in TAP_IDLE, reset halt on str912 will fail.
 150                  */
 151                 ZY1000_POKE(ZY1000_JTAG_BASE + 0x10, 0x00000001);
 152         }
 153
 154         if (!trst)
 155         {
 156                 ZY1000_POKE(ZY1000_JTAG_BASE + 0x14, 0x00000002);
 157         }
 158         else
 159         {
 160                 /* assert reset */
 161                 ZY1000_POKE(ZY1000_JTAG_BASE + 0x10, 0x00000002);
 162         }
 163
 164         if (trst||(srst && (jtag_get_reset_config() & RESET_SRST_PULLS_TRST)))
 165         {
 166                 /* we're now in the RESET state until trst is deasserted */
 167                 ZY1000_POKE(ZY1000_JTAG_BASE + 0x20, TAP_RESET);
 168         } else
 169         {
 170                 /* We'll get RCLK failure when we assert TRST, so clear any false positives here */
 171                 ZY1000_POKE(ZY1000_JTAG_BASE + 0x14, 0x400);
 172         }
 173
 174         /* wait for srst to float back up */
 175         if (!srst)
 176         {
 177                 int i;
 178                 for (i = 0; i < 1000; i++)
 179                 {
 180                         // We don't want to sense our own reset, so we clear here.
 181                         // There is of course a timing hole where we could loose
 182                         // a "real" reset.
 183                         if (!readSRST())
 184                                 break;
 185
 186                         /* wait 1ms */
 187                         alive_sleep(1);
 188                 }
 189
 190                 if (i == 1000)
 191                 {
 192                         LOG_USER("SRST didn't deassert after %dms", i);
 193                 } else if (i > 1)
 194                 {
 195                         LOG_USER("SRST took %dms to deassert", i);
 196                 }
 197         }
 198 }
 199
 200 int zy1000_speed(int speed)
 201 {
 202         if (speed == 0)
 203         {
 204                 /*0 means RCLK*/
 205                 speed = 0;
 206                 ZY1000_POKE(ZY1000_JTAG_BASE + 0x10, 0x100);
 207                 LOG_DEBUG("jtag_speed using RCLK");
 208         }
 209         else
 210         {
 211                 if (speed > 8190 || speed < 2)
 212                 {
 213                         LOG_USER("valid ZY1000 jtag_speed=[8190,2]. Divisor is 64MHz / even values between 8190-2, i.e. min 7814Hz, max 32MHz");
 214                         return ERROR_INVALID_ARGUMENTS;
 215                 }
 216
 217                 LOG_USER("jtag_speed %d => JTAG clk=%f", speed, 64.0/(float)speed);
 218                 ZY1000_POKE(ZY1000_JTAG_BASE + 0x14, 0x100);
 219                 ZY1000_POKE(ZY1000_JTAG_BASE + 0x1c, speed&~1);
 220         }
 221         return ERROR_OK;
 222 }
 223
 224 static bool savePower;
 225
 226
 227 static void setPower(bool power)
 228 {
 229         savePower = power;
 230         if (power)
 231         {
 232                 ZY1000_POKE(ZY1000_JTAG_BASE + 0x14, 0x8);
 233         } else
 234         {
 235                 ZY1000_POKE(ZY1000_JTAG_BASE + 0x10, 0x8);
 236         }
 237 }
 238
 239 COMMAND_HANDLER(handle_power_command)
 240 {
 241         switch (CMD_ARGC)
 242         {
 243         case 1: {
 244                 bool enable;
 245                 COMMAND_PARSE_ON_OFF(CMD_ARGV[0], enable);
 246                 setPower(enable);
 247                 // fall through
 248         }
 249         case 0:
 250                 LOG_INFO("Target power %s", savePower ? "on" : "off");
 251                 break;
 252         default:
 253                 return ERROR_INVALID_ARGUMENTS;
 254         }
 255
 256         return ERROR_OK;
 257 }
 258
 259
 260 /* Give TELNET a way to find out what version this is */
 261 static int jim_zy1000_version(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
 262 {
 263         if ((argc < 1) || (argc > 3))
 264                 return JIM_ERR;
 265         const char *version_str = NULL;
 266
 267         if (argc == 1)
 268         {
 269                 version_str = ZYLIN_OPENOCD_VERSION;
 270         } else
 271         {
 272                 const char *str = Jim_GetString(argv[1], NULL);
 273                 const char *str2 = NULL;
 274                 if (argc > 2)
 275                         str2 = Jim_GetString(argv[2], NULL);
 276                 if (strcmp("openocd", str) == 0)
 277                 {
 278                         version_str = ZYLIN_OPENOCD;
 279                 }
 280                 else if (strcmp("zy1000", str) == 0)
 281                 {
 282                         version_str = ZYLIN_VERSION;
 283                 }
 284                 else if (strcmp("date", str) == 0)
 285                 {
 286                         version_str = ZYLIN_DATE;
 287                 }
 288                 else if (strcmp("time", str) == 0)
 289                 {
 290                         version_str = ZYLIN_TIME;
 291                 }
 292                 else if (strcmp("pcb", str) == 0)
 293                 {
 294 #ifdef CYGPKG_HAL_NIOS2
 295                         version_str="c";
 296 #else
 297                         version_str="b";
 298 #endif
 299                 }
 300 #ifdef CYGPKG_HAL_NIOS2
 301                 else if (strcmp("fpga", str) == 0)
 302                 {
 303
 304                         /* return a list of 32 bit integers to describe the expected
 305                          * and actual FPGA
 306                          */
 307                         static char *fpga_id = "0x12345678 0x12345678 0x12345678 0x12345678";
 308                         cyg_uint32 id, timestamp;
 309                         HAL_READ_UINT32(SYSID_BASE, id);
 310                         HAL_READ_UINT32(SYSID_BASE+4, timestamp);
 311                         sprintf(fpga_id, "0x%08x 0x%08x 0x%08x 0x%08x", id, timestamp, SYSID_ID, SYSID_TIMESTAMP);
 312                         version_str = fpga_id;
 313                         if ((argc>2) && (strcmp("time", str2) == 0))
 314                         {
 315                             time_t last_mod = timestamp;
 316                             char * t = ctime (&last_mod) ;
 317                             t[strlen(t)-1] = 0;
 318                             version_str = t;
 319                         }
 320                 }
 321 #endif
 322
 323                 else
 324                 {
 325                         return JIM_ERR;
 326                 }
 327         }
 328
 329         Jim_SetResult(interp, Jim_NewStringObj(interp, version_str, -1));
 330
 331         return JIM_OK;
 332 }
 333
 334
 335 #ifdef CYGPKG_HAL_NIOS2
 336
 337
 338 struct info_forward
 339 {
 340         void *data;
 341         struct cyg_upgrade_info *upgraded_file;
 342 };
 343
 344 static void report_info(void *data, const char * format, va_list args)
 345 {
 346         char *s = alloc_vprintf(format, args);
 347         LOG_USER_N("%s", s);
 348         free(s);
 349 }
 350
 351 struct cyg_upgrade_info firmware_info =
 352 {
 353                 (cyg_uint8 *)0x84000000,
 354                 "/ram/firmware.phi",
 355                 "Firmware",
 356                 0x0300000,
 357                 0x1f00000 -
 358                 0x0300000,
 359                 "ZylinNiosFirmware\n",
 360                 report_info,
 361 };
 362
 363 static int jim_zy1000_writefirmware(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
 364 {
 365         if (argc != 2)
 366                 return JIM_ERR;
 367
 368         int length;
 369         const char *str = Jim_GetString(argv[1], &length);
 370
 371         /* */
 372         int tmpFile;
 373         if ((tmpFile = open(firmware_info.file, O_RDWR | O_CREAT | O_TRUNC)) <= 0)
 374         {
 375                 return JIM_ERR;
 376         }
 377         bool success;
 378         success = write(tmpFile, str, length) == length;
 379         close(tmpFile);
 380         if (!success)
 381                 return JIM_ERR;
 382
 383         if (!cyg_firmware_upgrade(NULL, firmware_info))
 384                 return JIM_ERR;
 385
 386         return JIM_OK;
 387 }
 388 #endif
 389
 390 static int
 391 zylinjtag_Jim_Command_powerstatus(Jim_Interp *interp,
 392                                                                    int argc,
 393                 Jim_Obj * const *argv)
 394 {
 395         if (argc != 1)
 396         {
 397                 Jim_WrongNumArgs(interp, 1, argv, "powerstatus");
 398                 return JIM_ERR;
 399         }
 400
 401         cyg_uint32 status;
 402         ZY1000_PEEK(ZY1000_JTAG_BASE + 0x10, status);
 403
 404         Jim_SetResult(interp, Jim_NewIntObj(interp, (status&0x80) != 0));
 405
 406         return JIM_OK;
 407 }
 408
 409
 410
 411
 412 int zy1000_init(void)
 413 {
 414         LOG_USER("%s", ZYLIN_OPENOCD_VERSION);
 415
 416         ZY1000_POKE(ZY1000_JTAG_BASE + 0x10, 0x30); // Turn on LED1 & LED2
 417
 418         setPower(true); // on by default
 419
 420
 421          /* deassert resets. Important to avoid infinite loop waiting for SRST to deassert */
 422         zy1000_reset(0, 0);
 423         zy1000_speed(jtag_get_speed());
 424
 425         return ERROR_OK;
 426 }
 427
 428 int zy1000_quit(void)
 429 {
 430
 431         return ERROR_OK;
 432 }
 433
 434
 435
 436 int interface_jtag_execute_queue(void)
 437 {
 438         cyg_uint32 empty;
 439
 440         waitIdle();
 441         ZY1000_PEEK(ZY1000_JTAG_BASE + 0x10, empty);
 442         /* clear JTAG error register */
 443         ZY1000_POKE(ZY1000_JTAG_BASE + 0x14, 0x400);
 444
 445         if ((empty&0x400) != 0)
 446         {
 447                 LOG_WARNING("RCLK timeout");
 448                 /* the error is informative only as we don't want to break the firmware if there
 449                  * is a false positive.
 450                  */
 451 //              return ERROR_FAIL;
 452         }
 453         return ERROR_OK;
 454 }
 455
 456
 457
 458
 459
 460 static cyg_uint32 getShiftValue(void)
 461 {
 462         cyg_uint32 value;
 463         waitIdle();
 464         ZY1000_PEEK(ZY1000_JTAG_BASE + 0xc, value);
 465         VERBOSE(LOG_INFO("getShiftValue %08x", value));
 466         return value;
 467 }
 468 #if 0
 469 static cyg_uint32 getShiftValueFlip(void)
 470 {
 471         cyg_uint32 value;
 472         waitIdle();
 473         ZY1000_PEEK(ZY1000_JTAG_BASE + 0x18, value);
 474         VERBOSE(LOG_INFO("getShiftValue %08x (flipped)", value));
 475         return value;
 476 }
 477 #endif
 478
 479 #if 0
 480 static void shiftValueInnerFlip(const tap_state_t state, const tap_state_t endState, int repeat, cyg_uint32 value)
 481 {
 482         VERBOSE(LOG_INFO("shiftValueInner %s %s %d %08x (flipped)", tap_state_name(state), tap_state_name(endState), repeat, value));
 483         cyg_uint32 a,b;
 484         a = state;
 485         b = endState;
 486         ZY1000_POKE(ZY1000_JTAG_BASE + 0xc, value);
 487         ZY1000_POKE(ZY1000_JTAG_BASE + 0x8, (1 << 15) | (repeat << 8) | (a << 4) | b);
 488         VERBOSE(getShiftValueFlip());
 489 }
 490 #endif
 491
 492 static void gotoEndState(tap_state_t end_state)
 493 {
 494         setCurrentState(end_state);
 495 }
 496
 497 static __inline void scanFields(int num_fields, const struct scan_field *fields, tap_state_t shiftState, int pause)
 498 {
 499         int i;
 500         int j;
 501         int k;
 502
 503         for (i = 0; i < num_fields; i++)
 504         {
 505                 cyg_uint32 value;
 506
 507                 uint8_t *inBuffer = NULL;
 508
 509
 510                 // figure out where to store the input data
 511                 int num_bits = fields[i].num_bits;
 512                 if (fields[i].in_value != NULL)
 513                 {
 514                         inBuffer = fields[i].in_value;
 515                 }
 516
 517                 // here we shuffle N bits out/in
 518                 j = 0;
 519                 while (j < num_bits)
 520                 {
 521                         tap_state_t pause_state;
 522                         int l;
 523                         k = num_bits-j;
 524                         pause_state = (shiftState == TAP_DRSHIFT)?TAP_DRSHIFT:TAP_IRSHIFT;
 525                         if (k > 32)
 526                         {
 527                                 k = 32;
 528                                 /* we have more to shift out */
 529                         } else if (pause&&(i == num_fields-1))
 530                         {
 531                                 /* this was the last to shift out this time */
 532                                 pause_state = (shiftState==TAP_DRSHIFT)?TAP_DRPAUSE:TAP_IRPAUSE;
 533                         }
 534
 535                         // we have (num_bits + 7)/8 bytes of bits to toggle out.
 536                         // bits are pushed out LSB to MSB
 537                         value = 0;
 538                         if (fields[i].out_value != NULL)
 539                         {
 540                                 for (l = 0; l < k; l += 8)
 541                                 {
 542                                         value|=fields[i].out_value[(j + l)/8]<<l;
 543                                 }
 544                         }
 545                         /* mask away unused bits for easier debugging */
 546                         if (k < 32)
 547                         {
 548                                 value&=~(((uint32_t)0xffffffff) << k);
 549                         } else
 550                         {
 551                                 /* Shifting by >= 32 is not defined by the C standard
 552                                  * and will in fact shift by &0x1f bits on nios */
 553                         }
 554
 555                         shiftValueInner(shiftState, pause_state, k, value);
 556
 557                         if (inBuffer != NULL)
 558                         {
 559                                 // data in, LSB to MSB
 560                                 value = getShiftValue();
 561                                 // we're shifting in data to MSB, shift data to be aligned for returning the value
 562                                 value >>= 32-k;
 563
 564                                 for (l = 0; l < k; l += 8)
 565                                 {
 566                                         inBuffer[(j + l)/8]=(value >> l)&0xff;
 567                                 }
 568                         }
 569                         j += k;
 570                 }
 571         }
 572 }
 573
 574 int interface_jtag_add_ir_scan(int num_fields, const struct scan_field *fields, tap_state_t state)
 575 {
 576
 577         int j;
 578         int scan_size = 0;
 579         struct jtag_tap *tap, *nextTap;
 580         for (tap = jtag_tap_next_enabled(NULL); tap!= NULL; tap = nextTap)
 581         {
 582                 nextTap = jtag_tap_next_enabled(tap);
 583                 int pause = (nextTap==NULL);
 584
 585                 int found = 0;
 586
 587                 scan_size = tap->ir_length;
 588
 589                 /* search the list */
 590                 for (j = 0; j < num_fields; j++)
 591                 {
 592                         if (tap == fields[j].tap)
 593                         {
 594                                 found = 1;
 595
 596                                 scanFields(1, fields + j, TAP_IRSHIFT, pause);
 597                                 /* update device information */
 598                                 buf_cpy(fields[j].out_value, tap->cur_instr, scan_size);
 599
 600                                 tap->bypass = 0;
 601                                 break;
 602                         }
 603                 }
 604
 605                 if (!found)
 606                 {
 607                         /* if a device isn't listed, set it to BYPASS */
 608                         uint8_t ones[]={0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff};
 609
 610                         struct scan_field tmp;
 611                         memset(&tmp, 0, sizeof(tmp));
 612                         tmp.out_value = ones;
 613                         tmp.num_bits = scan_size;
 614                         scanFields(1, &tmp, TAP_IRSHIFT, pause);
 615                         /* update device information */
 616                         buf_cpy(tmp.out_value, tap->cur_instr, scan_size);
 617                         tap->bypass = 1;
 618                 }
 619         }
 620         gotoEndState(state);
 621
 622         return ERROR_OK;
 623 }
 624
 625
 626
 627
 628
 629 int interface_jtag_add_plain_ir_scan(int num_fields, const struct scan_field *fields, tap_state_t state)
 630 {
 631         scanFields(num_fields, fields, TAP_IRSHIFT, 1);
 632         gotoEndState(state);
 633
 634         return ERROR_OK;
 635 }
 636
 637 int interface_jtag_add_dr_scan(int num_fields, const struct scan_field *fields, tap_state_t state)
 638 {
 639
 640         int j;
 641         struct jtag_tap *tap, *nextTap;
 642         for (tap = jtag_tap_next_enabled(NULL); tap!= NULL; tap = nextTap)
 643         {
 644                 nextTap = jtag_tap_next_enabled(tap);
 645                 int found = 0;
 646                 int pause = (nextTap==NULL);
 647
 648                 for (j = 0; j < num_fields; j++)
 649                 {
 650                         if (tap == fields[j].tap)
 651                         {
 652                                 found = 1;
 653
 654                                 scanFields(1, fields+j, TAP_DRSHIFT, pause);
 655                         }
 656                 }
 657                 if (!found)
 658                 {
 659                         struct scan_field tmp;
 660                         /* program the scan field to 1 bit length, and ignore it's value */
 661                         tmp.num_bits = 1;
 662                         tmp.out_value = NULL;
 663                         tmp.in_value = NULL;
 664
 665                         scanFields(1, &tmp, TAP_DRSHIFT, pause);
 666                 }
 667                 else
 668                 {
 669                 }
 670         }
 671         gotoEndState(state);
 672         return ERROR_OK;
 673 }
 674
 675 int interface_jtag_add_plain_dr_scan(int num_fields, const struct scan_field *fields, tap_state_t state)
 676 {
 677         scanFields(num_fields, fields, TAP_DRSHIFT, 1);
 678         gotoEndState(state);
 679         return ERROR_OK;
 680 }
 681
 682
 683 int interface_jtag_add_tlr()
 684 {
 685         setCurrentState(TAP_RESET);
 686         return ERROR_OK;
 687 }
 688
 689
 690
 691
 692 int interface_jtag_add_reset(int req_trst, int req_srst)
 693 {
 694         zy1000_reset(req_trst, req_srst);
 695         return ERROR_OK;
 696 }
 697
 698 static int zy1000_jtag_add_clocks(int num_cycles, tap_state_t state, tap_state_t clockstate)
 699 {
 700         /* num_cycles can be 0 */
 701         setCurrentState(clockstate);
 702
 703         /* execute num_cycles, 32 at the time. */
 704         int i;
 705         for (i = 0; i < num_cycles; i += 32)
 706         {
 707                 int num;
 708                 num = 32;
 709                 if (num_cycles-i < num)
 710                 {
 711                         num = num_cycles-i;
 712                 }
 713                 shiftValueInner(clockstate, clockstate, num, 0);
 714         }
 715
 716 #if !TEST_MANUAL()
 717         /* finish in end_state */
 718         setCurrentState(state);
 719 #else
 720         tap_state_t t = TAP_IDLE;
 721         /* test manual drive code on any target */
 722         int tms;
 723         uint8_t tms_scan = tap_get_tms_path(t, state);
 724         int tms_count = tap_get_tms_path_len(tap_get_state(), tap_get_end_state());
 725
 726         for (i = 0; i < tms_count; i++)
 727         {
 728                 tms = (tms_scan >> i) & 1;
 729                 waitIdle();
 730                 ZY1000_POKE(ZY1000_JTAG_BASE + 0x28,  tms);
 731         }
 732         waitIdle();
 733         ZY1000_POKE(ZY1000_JTAG_BASE + 0x20, state);
 734 #endif
 735
 736
 737         return ERROR_OK;
 738 }
 739
 740 int interface_jtag_add_runtest(int num_cycles, tap_state_t state)
 741 {
 742         return zy1000_jtag_add_clocks(num_cycles, state, TAP_IDLE);
 743 }
 744
 745 int interface_jtag_add_clocks(int num_cycles)
 746 {
 747         return zy1000_jtag_add_clocks(num_cycles, cmd_queue_cur_state, cmd_queue_cur_state);
 748 }
 749
 750 int interface_jtag_add_sleep(uint32_t us)
 751 {
 752         jtag_sleep(us);
 753         return ERROR_OK;
 754 }
 755
 756 int interface_jtag_add_pathmove(int num_states, const tap_state_t *path)
 757 {
 758         int state_count;
 759         int tms = 0;
 760
 761         /*wait for the fifo to be empty*/
 762         waitIdle();
 763
 764         state_count = 0;
 765
 766         tap_state_t cur_state = cmd_queue_cur_state;
 767
 768         while (num_states)
 769         {
 770                 if (tap_state_transition(cur_state, false) == path[state_count])
 771                 {
 772                         tms = 0;
 773                 }
 774                 else if (tap_state_transition(cur_state, true) == path[state_count])
 775                 {
 776                         tms = 1;
 777                 }
 778                 else
 779                 {
 780                         LOG_ERROR("BUG: %s -> %s isn't a valid TAP transition", tap_state_name(cur_state), tap_state_name(path[state_count]));
 781                         exit(-1);
 782                 }
 783
 784                 waitIdle();
 785                 ZY1000_POKE(ZY1000_JTAG_BASE + 0x28,  tms);
 786
 787                 cur_state = path[state_count];
 788                 state_count++;
 789                 num_states--;
 790         }
 791
 792         waitIdle();
 793         ZY1000_POKE(ZY1000_JTAG_BASE + 0x20,  cur_state);
 794         return ERROR_OK;
 795 }
 796
 797
 798
 799 void embeddedice_write_dcc(struct jtag_tap *tap, int reg_addr, uint8_t *buffer, int little, int count)
 800 {
 801 //      static int const reg_addr = 0x5;
 802         tap_state_t end_state = jtag_get_end_state();
 803         if (jtag_tap_next_enabled(jtag_tap_next_enabled(NULL)) == NULL)
 804         {
 805                 /* better performance via code duplication */
 806                 if (little)
 807                 {
 808                         int i;
 809                         for (i = 0; i < count; i++)
 810                         {
 811                                 shiftValueInner(TAP_DRSHIFT, TAP_DRSHIFT, 32, fast_target_buffer_get_u32(buffer, 1));
 812                                 shiftValueInner(TAP_DRSHIFT, end_state, 6, reg_addr | (1 << 5));
 813                                 buffer += 4;
 814                         }
 815                 } else
 816                 {
 817                         int i;
 818                         for (i = 0; i < count; i++)
 819                         {
 820                                 shiftValueInner(TAP_DRSHIFT, TAP_DRSHIFT, 32, fast_target_buffer_get_u32(buffer, 0));
 821                                 shiftValueInner(TAP_DRSHIFT, end_state, 6, reg_addr | (1 << 5));
 822                                 buffer += 4;
 823                         }
 824                 }
 825         }
 826         else
 827         {
 828                 int i;
 829                 for (i = 0; i < count; i++)
 830                 {
 831                         embeddedice_write_reg_inner(tap, reg_addr, fast_target_buffer_get_u32(buffer, little));
 832                         buffer += 4;
 833                 }
 834         }
 835 }
 836
 837
 838 static const struct command_registration zy1000_commands[] = {
 839         {
 840                 .name = "power",
 841                 .handler = handle_power_command,
 842                 .mode = COMMAND_ANY,
 843                 .help = "Turn power switch to target on/off. "
 844                         "With no arguments, prints status.",
 845                 .usage = "('on'|'off)",
 846         },
 847         {
 848                 .name = "zy1000_version",
 849                 .mode = COMMAND_ANY,
 850                 .jim_handler = jim_zy1000_version,
 851                 .help = "Print version info for zy1000.",
 852                 .usage = "['openocd'|'zy1000'|'date'|'time'|'pcb'|'fpga']",
 853         },
 854         {
 855                 .name = "powerstatus",
 856                 .mode = COMMAND_ANY,
 857                 .jim_handler = zylinjtag_Jim_Command_powerstatus,
 858                 .help = "Returns power status of target",
 859         },
 860 #ifdef CYGPKG_HAL_NIOS2
 861         {
 862                 .name = "updatezy1000firmware",
 863                 .mode = COMMAND_ANY,
 864                 .jim_handler = jim_zy1000_writefirmware,
 865                 .help = "writes firmware to flash",
 866                 /* .usage = "some_string", */
 867         },
 868 #endif
 869         COMMAND_REGISTRATION_DONE
 870 };
 871
 872
 873
 874 struct jtag_interface zy1000_interface =
 875 {
 876         .name = "ZY1000",
 877         .execute_queue = NULL,
 878         .speed = zy1000_speed,
 879         .commands = zy1000_commands,
 880         .init = zy1000_init,
 881         .quit = zy1000_quit,
 882         .khz = zy1000_khz,
 883         .speed_div = zy1000_speed_div,
 884         .power_dropout = zy1000_power_dropout,
 885         .srst_asserted = zy1000_srst_asserted,
 886 };
 887