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

   1 'n/***************************************************************************
   2  *   Copyright (C) 2007-2010 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 <time.h>
  52 #include <helper/time_support.h>
  53
  54 #include <netinet/tcp.h>
  55
  56 #if BUILD_ECOSBOARD
  57 #include "zy1000_version.h"
  58
  59 #include <cyg/hal/hal_io.h>             // low level i/o
  60 #include <cyg/hal/hal_diag.h>
  61
  62 #ifdef CYGPKG_HAL_NIOS2
  63 #include <cyg/hal/io.h>
  64 #include <cyg/firmwareutil/firmwareutil.h>
  65 #endif
  66
  67 #define ZYLIN_VERSION GIT_ZY1000_VERSION
  68 #define ZYLIN_DATE __DATE__
  69 #define ZYLIN_TIME __TIME__
  70 #define ZYLIN_OPENOCD GIT_OPENOCD_VERSION
  71 #define ZYLIN_OPENOCD_VERSION "ZY1000 " ZYLIN_VERSION " " ZYLIN_DATE
  72
  73 #endif
  74
  75
  76 /* The software needs to check if it's in RCLK mode or not */
  77 static bool zy1000_rclk = false;
  78
  79 static int zy1000_khz(int khz, int *jtag_speed)
  80 {
  81         if (khz == 0)
  82         {
  83                 *jtag_speed = 0;
  84         }
  85         else
  86         {
  87                 int speed;
  88                 /* Round speed up to nearest divisor.
  89                  *
  90                  * E.g. 16000kHz
  91                  * (64000 + 15999) / 16000 = 4
  92                  * (4 + 1) / 2 = 2
  93                  * 2 * 2 = 4
  94                  *
  95                  * 64000 / 4 = 16000
  96                  *
  97                  * E.g. 15999
  98                  * (64000 + 15998) / 15999 = 5
  99                  * (5 + 1) / 2 = 3
 100                  * 3 * 2 = 6
 101                  *
 102                  * 64000 / 6 = 10666
 103                  *
 104                  */
 105                 speed = (64000 + (khz -1)) / khz;
 106                 speed = (speed + 1 ) / 2;
 107                 speed *= 2;
 108                 if (speed > 8190)
 109                 {
 110                         /* maximum dividend */
 111                         speed = 8190;
 112                 }
 113                 *jtag_speed = speed;
 114         }
 115         return ERROR_OK;
 116 }
 117
 118 static int zy1000_speed_div(int speed, int *khz)
 119 {
 120         if (speed == 0)
 121         {
 122                 *khz = 0;
 123         }
 124         else
 125         {
 126                 *khz = 64000/speed;
 127         }
 128
 129         return ERROR_OK;
 130 }
 131
 132 static bool readPowerDropout(void)
 133 {
 134         uint32_t state;
 135         // sample and clear power dropout
 136         ZY1000_POKE(ZY1000_JTAG_BASE + 0x10, 0x80);
 137         ZY1000_PEEK(ZY1000_JTAG_BASE + 0x10, state);
 138         bool powerDropout;
 139         powerDropout = (state & 0x80) != 0;
 140         return powerDropout;
 141 }
 142
 143
 144 static bool readSRST(void)
 145 {
 146         uint32_t state;
 147         // sample and clear SRST sensing
 148         ZY1000_POKE(ZY1000_JTAG_BASE + 0x10, 0x00000040);
 149         ZY1000_PEEK(ZY1000_JTAG_BASE + 0x10, state);
 150         bool srstAsserted;
 151         srstAsserted = (state & 0x40) != 0;
 152         return srstAsserted;
 153 }
 154
 155 static int zy1000_srst_asserted(int *srst_asserted)
 156 {
 157         *srst_asserted = readSRST();
 158         return ERROR_OK;
 159 }
 160
 161 static int zy1000_power_dropout(int *dropout)
 162 {
 163         *dropout = readPowerDropout();
 164         return ERROR_OK;
 165 }
 166
 167 void zy1000_reset(int trst, int srst)
 168 {
 169         LOG_DEBUG("zy1000 trst=%d, srst=%d", trst, srst);
 170
 171         /* flush the JTAG FIFO. Not flushing the queue before messing with
 172          * reset has such interesting bugs as causing hard to reproduce
 173          * RCLK bugs as RCLK will stop responding when TRST is asserted
 174          */
 175         waitIdle();
 176
 177         if (!srst)
 178         {
 179                 ZY1000_POKE(ZY1000_JTAG_BASE + 0x14, 0x00000001);
 180         }
 181         else
 182         {
 183                 /* Danger!!! if clk != 0 when in
 184                  * idle in TAP_IDLE, reset halt on str912 will fail.
 185                  */
 186                 ZY1000_POKE(ZY1000_JTAG_BASE + 0x10, 0x00000001);
 187         }
 188
 189         if (!trst)
 190         {
 191                 ZY1000_POKE(ZY1000_JTAG_BASE + 0x14, 0x00000002);
 192         }
 193         else
 194         {
 195                 /* assert reset */
 196                 ZY1000_POKE(ZY1000_JTAG_BASE + 0x10, 0x00000002);
 197         }
 198
 199         if (trst||(srst && (jtag_get_reset_config() & RESET_SRST_PULLS_TRST)))
 200         {
 201                 /* we're now in the RESET state until trst is deasserted */
 202                 ZY1000_POKE(ZY1000_JTAG_BASE + 0x20, TAP_RESET);
 203         } else
 204         {
 205                 /* We'll get RCLK failure when we assert TRST, so clear any false positives here */
 206                 ZY1000_POKE(ZY1000_JTAG_BASE + 0x14, 0x400);
 207         }
 208
 209         /* wait for srst to float back up */
 210         if ((!srst && ((jtag_get_reset_config() & RESET_TRST_PULLS_SRST) == 0))||
 211                 (!srst && !trst && (jtag_get_reset_config() & RESET_TRST_PULLS_SRST)))
 212         {
 213                 bool first = true;
 214                 long long start = 0;
 215                 long total = 0;
 216                 for (;;)
 217                 {
 218                         // We don't want to sense our own reset, so we clear here.
 219                         // There is of course a timing hole where we could loose
 220                         // a "real" reset.
 221                         if (!readSRST())
 222                         {
 223                                 if (total > 1)
 224                                 {
 225                                   LOG_USER("SRST took %dms to deassert", (int)total);
 226                                 }
 227                                 break;
 228                         }
 229
 230                         if (first)
 231                         {
 232                             first = false;
 233                             start = timeval_ms();
 234                         }
 235
 236                         total = timeval_ms() - start;
 237
 238                         keep_alive();
 239
 240                         if (total > 5000)
 241                         {
 242                                 LOG_ERROR("SRST took too long to deassert: %dms", (int)total);
 243                             break;
 244                         }
 245                 }
 246
 247         }
 248 }
 249
 250 int zy1000_speed(int speed)
 251 {
 252         /* flush JTAG master FIFO before setting speed */
 253         waitIdle();
 254
 255         zy1000_rclk = false;
 256
 257         if (speed == 0)
 258         {
 259                 /*0 means RCLK*/
 260                 ZY1000_POKE(ZY1000_JTAG_BASE + 0x10, 0x100);
 261                 zy1000_rclk = true;
 262                 LOG_DEBUG("jtag_speed using RCLK");
 263         }
 264         else
 265         {
 266                 if (speed > 8190 || speed < 2)
 267                 {
 268                         LOG_USER("valid ZY1000 jtag_speed=[8190,2]. Divisor is 64MHz / even values between 8190-2, i.e. min 7814Hz, max 32MHz");
 269                         return ERROR_INVALID_ARGUMENTS;
 270                 }
 271
 272                 int khz;
 273                 speed &= ~1;
 274                 zy1000_speed_div(speed, &khz);
 275                 LOG_USER("jtag_speed %d => JTAG clk=%d kHz", speed, khz);
 276                 ZY1000_POKE(ZY1000_JTAG_BASE + 0x14, 0x100);
 277                 ZY1000_POKE(ZY1000_JTAG_BASE + 0x1c, speed);
 278         }
 279         return ERROR_OK;
 280 }
 281
 282 static bool savePower;
 283
 284
 285 static void setPower(bool power)
 286 {
 287         savePower = power;
 288         if (power)
 289         {
 290                 ZY1000_POKE(ZY1000_JTAG_BASE + 0x14, 0x8);
 291         } else
 292         {
 293                 ZY1000_POKE(ZY1000_JTAG_BASE + 0x10, 0x8);
 294         }
 295 }
 296
 297 COMMAND_HANDLER(handle_power_command)
 298 {
 299         switch (CMD_ARGC)
 300         {
 301         case 1: {
 302                 bool enable;
 303                 COMMAND_PARSE_ON_OFF(CMD_ARGV[0], enable);
 304                 setPower(enable);
 305                 // fall through
 306         }
 307         case 0:
 308                 LOG_INFO("Target power %s", savePower ? "on" : "off");
 309                 break;
 310         default:
 311                 return ERROR_INVALID_ARGUMENTS;
 312         }
 313
 314         return ERROR_OK;
 315 }
 316
 317 #if !BUILD_ECOSBOARD
 318 static char *tcp_server = "notspecified";
 319 static int jim_zy1000_server(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
 320 {
 321         if (argc != 2)
 322                 return JIM_ERR;
 323
 324         tcp_server = strdup(Jim_GetString(argv[1], NULL));
 325
 326         return JIM_OK;
 327 }
 328 #endif
 329
 330 #if BUILD_ECOSBOARD
 331 /* Give TELNET a way to find out what version this is */
 332 static int jim_zy1000_version(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
 333 {
 334         if ((argc < 1) || (argc > 3))
 335                 return JIM_ERR;
 336         const char *version_str = NULL;
 337
 338         if (argc == 1)
 339         {
 340                 version_str = ZYLIN_OPENOCD_VERSION;
 341         } else
 342         {
 343                 const char *str = Jim_GetString(argv[1], NULL);
 344                 const char *str2 = NULL;
 345                 if (argc > 2)
 346                         str2 = Jim_GetString(argv[2], NULL);
 347                 if (strcmp("openocd", str) == 0)
 348                 {
 349                         version_str = ZYLIN_OPENOCD;
 350                 }
 351                 else if (strcmp("zy1000", str) == 0)
 352                 {
 353                         version_str = ZYLIN_VERSION;
 354                 }
 355                 else if (strcmp("date", str) == 0)
 356                 {
 357                         version_str = ZYLIN_DATE;
 358                 }
 359                 else if (strcmp("time", str) == 0)
 360                 {
 361                         version_str = ZYLIN_TIME;
 362                 }
 363                 else if (strcmp("pcb", str) == 0)
 364                 {
 365 #ifdef CYGPKG_HAL_NIOS2
 366                         version_str="c";
 367 #else
 368                         version_str="b";
 369 #endif
 370                 }
 371 #ifdef CYGPKG_HAL_NIOS2
 372                 else if (strcmp("fpga", str) == 0)
 373                 {
 374
 375                         /* return a list of 32 bit integers to describe the expected
 376                          * and actual FPGA
 377                          */
 378                         static char *fpga_id = "0x12345678 0x12345678 0x12345678 0x12345678";
 379                         uint32_t id, timestamp;
 380                         HAL_READ_UINT32(SYSID_BASE, id);
 381                         HAL_READ_UINT32(SYSID_BASE+4, timestamp);
 382                         sprintf(fpga_id, "0x%08x 0x%08x 0x%08x 0x%08x", id, timestamp, SYSID_ID, SYSID_TIMESTAMP);
 383                         version_str = fpga_id;
 384                         if ((argc>2) && (strcmp("time", str2) == 0))
 385                         {
 386                             time_t last_mod = timestamp;
 387                             char * t = ctime (&last_mod) ;
 388                             t[strlen(t)-1] = 0;
 389                             version_str = t;
 390                         }
 391                 }
 392 #endif
 393
 394                 else
 395                 {
 396                         return JIM_ERR;
 397                 }
 398         }
 399
 400         Jim_SetResult(interp, Jim_NewStringObj(interp, version_str, -1));
 401
 402         return JIM_OK;
 403 }
 404 #endif
 405
 406 #ifdef CYGPKG_HAL_NIOS2
 407
 408
 409 struct info_forward
 410 {
 411         void *data;
 412         struct cyg_upgrade_info *upgraded_file;
 413 };
 414
 415 static void report_info(void *data, const char * format, va_list args)
 416 {
 417         char *s = alloc_vprintf(format, args);
 418         LOG_USER_N("%s", s);
 419         free(s);
 420 }
 421
 422 struct cyg_upgrade_info firmware_info =
 423 {
 424                 (uint8_t *)0x84000000,
 425                 "/ram/firmware.phi",
 426                 "Firmware",
 427                 0x0300000,
 428                 0x1f00000 -
 429                 0x0300000,
 430                 "ZylinNiosFirmware\n",
 431                 report_info,
 432 };
 433
 434 static int jim_zy1000_writefirmware(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
 435 {
 436         if (argc != 2)
 437                 return JIM_ERR;
 438
 439         int length;
 440         const char *str = Jim_GetString(argv[1], &length);
 441
 442         /* */
 443         int tmpFile;
 444         if ((tmpFile = open(firmware_info.file, O_RDWR | O_CREAT | O_TRUNC)) <= 0)
 445         {
 446                 return JIM_ERR;
 447         }
 448         bool success;
 449         success = write(tmpFile, str, length) == length;
 450         close(tmpFile);
 451         if (!success)
 452                 return JIM_ERR;
 453
 454         if (!cyg_firmware_upgrade(NULL, firmware_info))
 455                 return JIM_ERR;
 456
 457         return JIM_OK;
 458 }
 459 #endif
 460
 461 static int
 462 zylinjtag_Jim_Command_powerstatus(Jim_Interp *interp,
 463                                                                    int argc,
 464                 Jim_Obj * const *argv)
 465 {
 466         if (argc != 1)
 467         {
 468                 Jim_WrongNumArgs(interp, 1, argv, "powerstatus");
 469                 return JIM_ERR;
 470         }
 471
 472         bool dropout = readPowerDropout();
 473
 474         Jim_SetResult(interp, Jim_NewIntObj(interp, dropout));
 475
 476         return JIM_OK;
 477 }
 478
 479
 480
 481 int zy1000_quit(void)
 482 {
 483
 484         return ERROR_OK;
 485 }
 486
 487
 488
 489 int interface_jtag_execute_queue(void)
 490 {
 491         uint32_t empty;
 492
 493         waitIdle();
 494
 495         /* We must make sure to write data read back to memory location before we return
 496          * from this fn
 497          */
 498         zy1000_flush_readqueue();
 499
 500         /* and handle any callbacks... */
 501         zy1000_flush_callbackqueue();
 502
 503         if (zy1000_rclk)
 504         {
 505                 /* Only check for errors when using RCLK to speed up
 506                  * jtag over TCP/IP
 507                  */
 508                 ZY1000_PEEK(ZY1000_JTAG_BASE + 0x10, empty);
 509                 /* clear JTAG error register */
 510                 ZY1000_POKE(ZY1000_JTAG_BASE + 0x14, 0x400);
 511
 512                 if ((empty&0x400) != 0)
 513                 {
 514                         LOG_WARNING("RCLK timeout");
 515                         /* the error is informative only as we don't want to break the firmware if there
 516                          * is a false positive.
 517                          */
 518         //              return ERROR_FAIL;
 519                 }
 520         }
 521         return ERROR_OK;
 522 }
 523
 524
 525
 526
 527 static void writeShiftValue(uint8_t *data, int bits);
 528
 529 // here we shuffle N bits out/in
 530 static __inline void scanBits(const uint8_t *out_value, uint8_t *in_value, int num_bits, bool pause_now, tap_state_t shiftState, tap_state_t end_state)
 531 {
 532         tap_state_t pause_state = shiftState;
 533         for (int j = 0; j < num_bits; j += 32)
 534         {
 535                 int k = num_bits - j;
 536                 if (k > 32)
 537                 {
 538                         k = 32;
 539                         /* we have more to shift out */
 540                 } else if (pause_now)
 541                 {
 542                         /* this was the last to shift out this time */
 543                         pause_state = end_state;
 544                 }
 545
 546                 // we have (num_bits + 7)/8 bytes of bits to toggle out.
 547                 // bits are pushed out LSB to MSB
 548                 uint32_t value;
 549                 value = 0;
 550                 if (out_value != NULL)
 551                 {
 552                         for (int l = 0; l < k; l += 8)
 553                         {
 554                                 value|=out_value[(j + l)/8]<<l;
 555                         }
 556                 }
 557                 /* mask away unused bits for easier debugging */
 558                 if (k < 32)
 559                 {
 560                         value&=~(((uint32_t)0xffffffff) << k);
 561                 } else
 562                 {
 563                         /* Shifting by >= 32 is not defined by the C standard
 564                          * and will in fact shift by &0x1f bits on nios */
 565                 }
 566
 567                 shiftValueInner(shiftState, pause_state, k, value);
 568
 569                 if (in_value != NULL)
 570                 {
 571                         writeShiftValue(in_value + (j/8), k);
 572                 }
 573         }
 574 }
 575
 576 static __inline void scanFields(int num_fields, const struct scan_field *fields, tap_state_t shiftState, tap_state_t end_state)
 577 {
 578         for (int i = 0; i < num_fields; i++)
 579         {
 580                 scanBits(fields[i].out_value,
 581                                 fields[i].in_value,
 582                                 fields[i].num_bits,
 583                                 (i == num_fields-1),
 584                                 shiftState,
 585                                 end_state);
 586         }
 587 }
 588
 589 int interface_jtag_add_ir_scan(struct jtag_tap *active, const struct scan_field *fields, tap_state_t state)
 590 {
 591         int scan_size = 0;
 592         struct jtag_tap *tap, *nextTap;
 593         tap_state_t pause_state = TAP_IRSHIFT;
 594
 595         for (tap = jtag_tap_next_enabled(NULL); tap!= NULL; tap = nextTap)
 596         {
 597                 nextTap = jtag_tap_next_enabled(tap);
 598                 if (nextTap==NULL)
 599                 {
 600                         pause_state = state;
 601                 }
 602                 scan_size = tap->ir_length;
 603
 604                 /* search the list */
 605                 if (tap == active)
 606                 {
 607                         scanFields(1, fields, TAP_IRSHIFT, pause_state);
 608                         /* update device information */
 609                         buf_cpy(fields[0].out_value, tap->cur_instr, scan_size);
 610
 611                         tap->bypass = 0;
 612                 } else
 613                 {
 614                         /* if a device isn't listed, set it to BYPASS */
 615                         assert(scan_size <= 32);
 616                         shiftValueInner(TAP_IRSHIFT, pause_state, scan_size, 0xffffffff);
 617
 618                         tap->bypass = 1;
 619                 }
 620         }
 621
 622         return ERROR_OK;
 623 }
 624
 625
 626
 627
 628
 629 int interface_jtag_add_plain_ir_scan(int num_bits, const uint8_t *out_bits, uint8_t *in_bits, tap_state_t state)
 630 {
 631         scanBits(out_bits, in_bits, num_bits, true, TAP_IRSHIFT, state);
 632         return ERROR_OK;
 633 }
 634
 635 int interface_jtag_add_dr_scan(struct jtag_tap *active, int num_fields, const struct scan_field *fields, tap_state_t state)
 636 {
 637         struct jtag_tap *tap, *nextTap;
 638         tap_state_t pause_state = TAP_DRSHIFT;
 639         for (tap = jtag_tap_next_enabled(NULL); tap!= NULL; tap = nextTap)
 640         {
 641                 nextTap = jtag_tap_next_enabled(tap);
 642                 if (nextTap==NULL)
 643                 {
 644                         pause_state = state;
 645                 }
 646
 647                 /* Find a range of fields to write to this tap */
 648                 if (tap == active)
 649                 {
 650                         assert(!tap->bypass);
 651
 652                         scanFields(num_fields, fields, TAP_DRSHIFT, pause_state);
 653                 } else
 654                 {
 655                         /* Shift out a 0 for disabled tap's */
 656                         assert(tap->bypass);
 657                         shiftValueInner(TAP_DRSHIFT, pause_state, 1, 0);
 658                 }
 659         }
 660         return ERROR_OK;
 661 }
 662
 663 int interface_jtag_add_plain_dr_scan(int num_bits, const uint8_t *out_bits, uint8_t *in_bits, tap_state_t state)
 664 {
 665         scanBits(out_bits, in_bits, num_bits, true, TAP_DRSHIFT, state);
 666         return ERROR_OK;
 667 }
 668
 669 int interface_jtag_add_tlr()
 670 {
 671         setCurrentState(TAP_RESET);
 672         return ERROR_OK;
 673 }
 674
 675
 676 int interface_jtag_add_reset(int req_trst, int req_srst)
 677 {
 678         zy1000_reset(req_trst, req_srst);
 679         return ERROR_OK;
 680 }
 681
 682 static int zy1000_jtag_add_clocks(int num_cycles, tap_state_t state, tap_state_t clockstate)
 683 {
 684         /* num_cycles can be 0 */
 685         setCurrentState(clockstate);
 686
 687         /* execute num_cycles, 32 at the time. */
 688         int i;
 689         for (i = 0; i < num_cycles; i += 32)
 690         {
 691                 int num;
 692                 num = 32;
 693                 if (num_cycles-i < num)
 694                 {
 695                         num = num_cycles-i;
 696                 }
 697                 shiftValueInner(clockstate, clockstate, num, 0);
 698         }
 699
 700 #if !TEST_MANUAL()
 701         /* finish in end_state */
 702         setCurrentState(state);
 703 #else
 704         tap_state_t t = TAP_IDLE;
 705         /* test manual drive code on any target */
 706         int tms;
 707         uint8_t tms_scan = tap_get_tms_path(t, state);
 708         int tms_count = tap_get_tms_path_len(tap_get_state(), tap_get_end_state());
 709
 710         for (i = 0; i < tms_count; i++)
 711         {
 712                 tms = (tms_scan >> i) & 1;
 713                 waitIdle();
 714                 ZY1000_POKE(ZY1000_JTAG_BASE + 0x28,  tms);
 715         }
 716         waitIdle();
 717         ZY1000_POKE(ZY1000_JTAG_BASE + 0x20, state);
 718 #endif
 719
 720         return ERROR_OK;
 721 }
 722
 723 int interface_jtag_add_runtest(int num_cycles, tap_state_t state)
 724 {
 725         return zy1000_jtag_add_clocks(num_cycles, state, TAP_IDLE);
 726 }
 727
 728 int interface_jtag_add_clocks(int num_cycles)
 729 {
 730         return zy1000_jtag_add_clocks(num_cycles, cmd_queue_cur_state, cmd_queue_cur_state);
 731 }
 732
 733 int interface_add_tms_seq(unsigned num_bits, const uint8_t *seq, enum tap_state state)
 734 {
 735         /*wait for the fifo to be empty*/
 736         waitIdle();
 737
 738         for (unsigned i = 0; i < num_bits; i++)
 739         {
 740                 int tms;
 741
 742                 if (((seq[i/8] >> (i % 8)) & 1) == 0)
 743                 {
 744                         tms = 0;
 745                 }
 746                 else
 747                 {
 748                         tms = 1;
 749                 }
 750
 751                 waitIdle();
 752                 ZY1000_POKE(ZY1000_JTAG_BASE + 0x28, tms);
 753         }
 754
 755         waitIdle();
 756         if (state != TAP_INVALID)
 757         {
 758                 ZY1000_POKE(ZY1000_JTAG_BASE + 0x20, state);
 759         } else
 760         {
 761                 /* this would be normal if we are switching to SWD mode */
 762         }
 763         return ERROR_OK;
 764 }
 765
 766 int interface_jtag_add_pathmove(int num_states, const tap_state_t *path)
 767 {
 768         int state_count;
 769         int tms = 0;
 770
 771         state_count = 0;
 772
 773         tap_state_t cur_state = cmd_queue_cur_state;
 774
 775         uint8_t seq[16];
 776         memset(seq, 0, sizeof(seq));
 777         assert(num_states < (int)((sizeof(seq) * 8)));
 778
 779         while (num_states)
 780         {
 781                 if (tap_state_transition(cur_state, false) == path[state_count])
 782                 {
 783                         tms = 0;
 784                 }
 785                 else if (tap_state_transition(cur_state, true) == path[state_count])
 786                 {
 787                         tms = 1;
 788                 }
 789                 else
 790                 {
 791                         LOG_ERROR("BUG: %s -> %s isn't a valid TAP transition", tap_state_name(cur_state), tap_state_name(path[state_count]));
 792                         exit(-1);
 793                 }
 794
 795                 seq[state_count/8] = seq[state_count/8] | (tms << (state_count % 8));
 796
 797                 cur_state = path[state_count];
 798                 state_count++;
 799                 num_states--;
 800         }
 801
 802         return interface_add_tms_seq(state_count, seq, cur_state);
 803 }
 804
 805 static void jtag_pre_post_bits(struct jtag_tap *tap, int *pre, int *post)
 806 {
 807         /* bypass bits before and after */
 808         int pre_bits = 0;
 809         int post_bits = 0;
 810
 811         bool found = false;
 812         struct jtag_tap *cur_tap, *nextTap;
 813         for (cur_tap = jtag_tap_next_enabled(NULL); cur_tap!= NULL; cur_tap = nextTap)
 814         {
 815                 nextTap = jtag_tap_next_enabled(cur_tap);
 816                 if (cur_tap == tap)
 817                 {
 818                         found = true;
 819                 } else
 820                 {
 821                         if (found)
 822                         {
 823                                 post_bits++;
 824                         } else
 825                         {
 826                                 pre_bits++;
 827                         }
 828                 }
 829         }
 830         *pre = pre_bits;
 831         *post = post_bits;
 832 }
 833
 834 /*
 835         static const int embeddedice_num_bits[] = {32, 6};
 836         uint32_t values[2];
 837
 838         values[0] = value;
 839         values[1] = (1 << 5) | reg_addr;
 840
 841         jtag_add_dr_out(tap,
 842                         2,
 843                         embeddedice_num_bits,
 844                         values,
 845                         TAP_IDLE);
 846 */
 847
 848 void embeddedice_write_dcc(struct jtag_tap *tap, int reg_addr, uint8_t *buffer, int little, int count)
 849 {
 850 #if 0
 851         int i;
 852         for (i = 0; i < count; i++)
 853         {
 854                 embeddedice_write_reg_inner(tap, reg_addr, fast_target_buffer_get_u32(buffer, little));
 855                 buffer += 4;
 856         }
 857 #else
 858         int pre_bits;
 859         int post_bits;
 860         jtag_pre_post_bits(tap, &pre_bits, &post_bits);
 861
 862         if ((pre_bits > 32) || (post_bits + 6 > 32))
 863         {
 864                 int i;
 865                 for (i = 0; i < count; i++)
 866                 {
 867                         embeddedice_write_reg_inner(tap, reg_addr, fast_target_buffer_get_u32(buffer, little));
 868                         buffer += 4;
 869                 }
 870         } else
 871         {
 872                 int i;
 873                 for (i = 0; i < count; i++)
 874                 {
 875                         /* Fewer pokes means we get to use the FIFO more efficiently */
 876                         shiftValueInner(TAP_DRSHIFT, TAP_DRSHIFT, pre_bits, 0);
 877                         shiftValueInner(TAP_DRSHIFT, TAP_DRSHIFT, 32, fast_target_buffer_get_u32(buffer, little));
 878                         /* Danger! here we need to exit into the TAP_IDLE state to make
 879                          * DCC pick up this value.
 880                          */
 881                         shiftValueInner(TAP_DRSHIFT, TAP_IDLE, 6 + post_bits, (reg_addr | (1 << 5)));
 882                         buffer += 4;
 883                 }
 884         }
 885 #endif
 886 }
 887
 888
 889
 890 int arm11_run_instr_data_to_core_noack_inner(struct jtag_tap * tap, uint32_t opcode, uint32_t * data, size_t count)
 891 {
 892         /* bypass bits before and after */
 893         int pre_bits;
 894         int post_bits;
 895         jtag_pre_post_bits(tap, &pre_bits, &post_bits);
 896         post_bits+=2;
 897
 898         if ((pre_bits > 32) || (post_bits > 32))
 899         {
 900                 int arm11_run_instr_data_to_core_noack_inner_default(struct jtag_tap *, uint32_t, uint32_t *, size_t);
 901                 return arm11_run_instr_data_to_core_noack_inner_default(tap, opcode, data, count);
 902         } else
 903         {
 904                 static const int bits[] = {32, 2};
 905                 uint32_t values[] = {0, 0};
 906
 907                 /* FIX!!!!!! the target_write_memory() API started this nasty problem
 908                  * with unaligned uint32_t * pointers... */
 909                 const uint8_t *t = (const uint8_t *)data;
 910
 911                 while (--count > 0)
 912                 {
 913 #if 1
 914                         /* Danger! This code doesn't update cmd_queue_cur_state, so
 915                          * invoking jtag_add_pathmove() before jtag_add_dr_out() after
 916                          * this loop would fail!
 917                          */
 918                         shiftValueInner(TAP_DRSHIFT, TAP_DRSHIFT, pre_bits, 0);
 919
 920                         uint32_t value;
 921                         value = *t++;
 922                         value |= (*t++<<8);
 923                         value |= (*t++<<16);
 924                         value |= (*t++<<24);
 925
 926                         shiftValueInner(TAP_DRSHIFT, TAP_DRSHIFT, 32, value);
 927                         /* minimum 2 bits */
 928                         shiftValueInner(TAP_DRSHIFT, TAP_DRPAUSE, post_bits, 0);
 929
 930                         /* copy & paste from arm11_dbgtap.c */
 931                         //TAP_DREXIT2, TAP_DRUPDATE, TAP_IDLE, TAP_IDLE, TAP_IDLE, TAP_DRSELECT, TAP_DRCAPTURE, TAP_DRSHIFT
 932                         /* KLUDGE! we have to flush the fifo or the Nios CPU locks up.
 933                          * This is probably a bug in the Avalon bus(cross clocking bridge?)
 934                          * or in the jtag registers module.
 935                          */
 936                         waitIdle();
 937                         ZY1000_POKE(ZY1000_JTAG_BASE + 0x28, 1);
 938                         ZY1000_POKE(ZY1000_JTAG_BASE + 0x28, 1);
 939                         ZY1000_POKE(ZY1000_JTAG_BASE + 0x28, 0);
 940                         ZY1000_POKE(ZY1000_JTAG_BASE + 0x28, 0);
 941                         ZY1000_POKE(ZY1000_JTAG_BASE + 0x28, 0);
 942                         ZY1000_POKE(ZY1000_JTAG_BASE + 0x28, 1);
 943                         ZY1000_POKE(ZY1000_JTAG_BASE + 0x28, 0);
 944                         ZY1000_POKE(ZY1000_JTAG_BASE + 0x28, 0);
 945                         /* we don't have to wait for the queue to empty here */
 946                         ZY1000_POKE(ZY1000_JTAG_BASE + 0x20, TAP_DRSHIFT);
 947                         waitIdle();
 948 #else
 949                         static const tap_state_t arm11_MOVE_DRPAUSE_IDLE_DRPAUSE_with_delay[] =
 950                         {
 951                                 TAP_DREXIT2, TAP_DRUPDATE, TAP_IDLE, TAP_IDLE, TAP_IDLE, TAP_DRSELECT, TAP_DRCAPTURE, TAP_DRSHIFT
 952                         };
 953
 954                         values[0] = *t++;
 955                         values[0] |= (*t++<<8);
 956                         values[0] |= (*t++<<16);
 957                         values[0] |= (*t++<<24);
 958
 959                         jtag_add_dr_out(tap,
 960                                 2,
 961                                 bits,
 962                                 values,
 963                                 TAP_IDLE);
 964
 965                         jtag_add_pathmove(ARRAY_SIZE(arm11_MOVE_DRPAUSE_IDLE_DRPAUSE_with_delay),
 966                                 arm11_MOVE_DRPAUSE_IDLE_DRPAUSE_with_delay);
 967 #endif
 968                 }
 969
 970                 values[0] = *t++;
 971                 values[0] |= (*t++<<8);
 972                 values[0] |= (*t++<<16);
 973                 values[0] |= (*t++<<24);
 974
 975                 /* This will happen on the last iteration updating cmd_queue_cur_state
 976                  * so we don't have to track it during the common code path
 977                  */
 978                 jtag_add_dr_out(tap,
 979                         2,
 980                         bits,
 981                         values,
 982                         TAP_IDLE);
 983
 984                 return jtag_execute_queue();
 985         }
 986 }
 987
 988
 989 static const struct command_registration zy1000_commands[] = {
 990         {
 991                 .name = "power",
 992                 .handler = handle_power_command,
 993                 .mode = COMMAND_ANY,
 994                 .help = "Turn power switch to target on/off. "
 995                         "With no arguments, prints status.",
 996                 .usage = "('on'|'off)",
 997         },
 998 #if BUILD_ECOSBOARD
 999         {
1000                 .name = "zy1000_version",
1001                 .mode = COMMAND_ANY,
1002                 .jim_handler = jim_zy1000_version,
1003                 .help = "Print version info for zy1000.",
1004                 .usage = "['openocd'|'zy1000'|'date'|'time'|'pcb'|'fpga']",
1005         },
1006 #else
1007         {
1008                 .name = "zy1000_server",
1009                 .mode = COMMAND_ANY,
1010                 .jim_handler = jim_zy1000_server,
1011                 .help = "Tcpip address for ZY1000 server.",
1012                 .usage = "address",
1013         },
1014 #endif
1015         {
1016                 .name = "powerstatus",
1017                 .mode = COMMAND_ANY,
1018                 .jim_handler = zylinjtag_Jim_Command_powerstatus,
1019                 .help = "Returns power status of target",
1020         },
1021 #ifdef CYGPKG_HAL_NIOS2
1022         {
1023                 .name = "updatezy1000firmware",
1024                 .mode = COMMAND_ANY,
1025                 .jim_handler = jim_zy1000_writefirmware,
1026                 .help = "writes firmware to flash",
1027                 /* .usage = "some_string", */
1028         },
1029 #endif
1030         COMMAND_REGISTRATION_DONE
1031 };
1032
1033
1034 static int tcp_ip = -1;
1035
1036 /* Write large packets if we can */
1037 static size_t out_pos;
1038 static uint8_t out_buffer[16384];
1039 static size_t in_pos;
1040 static size_t in_write;
1041 static uint8_t in_buffer[16384];
1042
1043 static bool flush_writes(void)
1044 {
1045         bool ok = (write(tcp_ip, out_buffer, out_pos) == (int)out_pos);
1046         out_pos = 0;
1047         return ok;
1048 }
1049
1050 static bool writeLong(uint32_t l)
1051 {
1052         int i;
1053         for (i = 0; i < 4; i++)
1054         {
1055                 uint8_t c = (l >> (i*8))&0xff;
1056                 out_buffer[out_pos++] = c;
1057                 if (out_pos >= sizeof(out_buffer))
1058                 {
1059                         if (!flush_writes())
1060                         {
1061                                 return false;
1062                         }
1063                 }
1064         }
1065         return true;
1066 }
1067
1068 static bool readLong(uint32_t *out_data)
1069 {
1070         if (out_pos > 0)
1071         {
1072                 if (!flush_writes())
1073                 {
1074                         return false;
1075                 }
1076         }
1077
1078         uint32_t data = 0;
1079         int i;
1080         for (i = 0; i < 4; i++)
1081         {
1082                 uint8_t c;
1083                 if (in_pos == in_write)
1084                 {
1085                         /* read more */
1086                         int t;
1087                         t = read(tcp_ip, in_buffer, sizeof(in_buffer));
1088                         if (t < 1)
1089                         {
1090                                 return false;
1091                         }
1092                         in_write = (size_t) t;
1093                         in_pos = 0;
1094                 }
1095                 c = in_buffer[in_pos++];
1096
1097                 data |= (c << (i*8));
1098         }
1099         *out_data = data;
1100         return true;
1101 }
1102
1103 enum ZY1000_CMD
1104 {
1105         ZY1000_CMD_POKE = 0x0,
1106         ZY1000_CMD_PEEK = 0x8,
1107         ZY1000_CMD_SLEEP = 0x1,
1108         ZY1000_CMD_WAITIDLE = 2
1109 };
1110
1111
1112 #if !BUILD_ECOSBOARD
1113
1114 #include <sys/socket.h> /* for socket(), connect(), send(), and recv() */
1115 #include <arpa/inet.h>  /* for sockaddr_in and inet_addr() */
1116
1117 /* We initialize this late since we need to know the server address
1118  * first.
1119  */
1120 static void tcpip_open(void)
1121 {
1122         if (tcp_ip >= 0)
1123                 return;
1124
1125         struct sockaddr_in echoServAddr; /* Echo server address */
1126
1127         /* Create a reliable, stream socket using TCP */
1128         if ((tcp_ip = socket(PF_INET, SOCK_STREAM, IPPROTO_TCP)) < 0)
1129         {
1130                 fprintf(stderr, "Failed to connect to zy1000 server\n");
1131                 exit(-1);
1132         }
1133
1134         /* Construct the server address structure */
1135         memset(&echoServAddr, 0, sizeof(echoServAddr)); /* Zero out structure */
1136         echoServAddr.sin_family = AF_INET; /* Internet address family */
1137         echoServAddr.sin_addr.s_addr = inet_addr(tcp_server); /* Server IP address */
1138         echoServAddr.sin_port = htons(7777); /* Server port */
1139
1140         /* Establish the connection to the echo server */
1141         if (connect(tcp_ip, (struct sockaddr *) &echoServAddr, sizeof(echoServAddr)) < 0)
1142         {
1143                 fprintf(stderr, "Failed to connect to zy1000 server\n");
1144                 exit(-1);
1145         }
1146
1147         int flag = 1;
1148         setsockopt(tcp_ip,      /* socket affected */
1149                         IPPROTO_TCP,            /* set option at TCP level */
1150                         TCP_NODELAY,            /* name of option */
1151                         (char *)&flag,          /* the cast is historical cruft */
1152                         sizeof(int));           /* length of option value */
1153
1154 }
1155
1156
1157 /* send a poke */
1158 void zy1000_tcpout(uint32_t address, uint32_t data)
1159 {
1160         tcpip_open();
1161         if (!writeLong((ZY1000_CMD_POKE << 24) | address)||
1162                         !writeLong(data))
1163         {
1164                 fprintf(stderr, "Could not write to zy1000 server\n");
1165                 exit(-1);
1166         }
1167 }
1168
1169 /* By sending the wait to the server, we avoid a readback
1170  * of status. Radically improves performance for this operation
1171  * with long ping times.
1172  */
1173 void waitIdle(void)
1174 {
1175         tcpip_open();
1176         if (!writeLong((ZY1000_CMD_WAITIDLE << 24)))
1177         {
1178                 fprintf(stderr, "Could not write to zy1000 server\n");
1179                 exit(-1);
1180         }
1181 }
1182
1183 uint32_t zy1000_tcpin(uint32_t address)
1184 {
1185         tcpip_open();
1186
1187         zy1000_flush_readqueue();
1188
1189         uint32_t data;
1190         if (!writeLong((ZY1000_CMD_PEEK << 24) | address)||
1191                         !readLong(&data))
1192         {
1193                 fprintf(stderr, "Could not read from zy1000 server\n");
1194                 exit(-1);
1195         }
1196         return data;
1197 }
1198
1199 int interface_jtag_add_sleep(uint32_t us)
1200 {
1201         tcpip_open();
1202         if (!writeLong((ZY1000_CMD_SLEEP << 24))||
1203                         !writeLong(us))
1204         {
1205                 fprintf(stderr, "Could not read from zy1000 server\n");
1206                 exit(-1);
1207         }
1208         return ERROR_OK;
1209 }
1210
1211 /* queue a readback */
1212 #define readqueue_size 16384
1213 static struct
1214 {
1215         uint8_t *dest;
1216         int bits;
1217 } readqueue[readqueue_size];
1218
1219 static int readqueue_pos = 0;
1220
1221 /* flush the readqueue, this means reading any data that
1222  * we're expecting and store them into the final position
1223  */
1224 void zy1000_flush_readqueue(void)
1225 {
1226         if (readqueue_pos == 0)
1227         {
1228                 /* simply debugging by allowing easy breakpoints when there
1229                  * is something to do. */
1230                 return;
1231         }
1232         int i;
1233         tcpip_open();
1234         for (i = 0; i < readqueue_pos; i++)
1235         {
1236                 uint32_t value;
1237                 if (!readLong(&value))
1238                 {
1239                         fprintf(stderr, "Could not read from zy1000 server\n");
1240                         exit(-1);
1241                 }
1242
1243                 uint8_t *in_value = readqueue[i].dest;
1244                 int k = readqueue[i].bits;
1245
1246                 // we're shifting in data to MSB, shift data to be aligned for returning the value
1247                 value >>= 32-k;
1248
1249                 for (int l = 0; l < k; l += 8)
1250                 {
1251                         in_value[l/8]=(value >> l)&0xff;
1252                 }
1253         }
1254         readqueue_pos = 0;
1255 }
1256
1257 /* By queuing the callback's we avoid flushing the
1258 read queue until jtag_execute_queue(). This can
1259 reduce latency dramatically for cases where
1260 callbacks are used extensively.
1261 */
1262 #define callbackqueue_size 128
1263 static struct callbackentry
1264 {
1265         jtag_callback_t callback;
1266         jtag_callback_data_t data0;
1267         jtag_callback_data_t data1;
1268         jtag_callback_data_t data2;
1269         jtag_callback_data_t data3;
1270 } callbackqueue[callbackqueue_size];
1271
1272 static int callbackqueue_pos = 0;
1273
1274 void zy1000_jtag_add_callback4(jtag_callback_t callback, jtag_callback_data_t data0, jtag_callback_data_t data1, jtag_callback_data_t data2, jtag_callback_data_t data3)
1275 {
1276         if (callbackqueue_pos >= callbackqueue_size)
1277         {
1278                 zy1000_flush_callbackqueue();
1279         }
1280
1281         callbackqueue[callbackqueue_pos].callback = callback;
1282         callbackqueue[callbackqueue_pos].data0 = data0;
1283         callbackqueue[callbackqueue_pos].data1 = data1;
1284         callbackqueue[callbackqueue_pos].data2 = data2;
1285         callbackqueue[callbackqueue_pos].data3 = data3;
1286         callbackqueue_pos++;
1287 }
1288
1289 static int zy1000_jtag_convert_to_callback4(jtag_callback_data_t data0, jtag_callback_data_t data1, jtag_callback_data_t data2, jtag_callback_data_t data3)
1290 {
1291         ((jtag_callback1_t)data1)(data0);
1292         return ERROR_OK;
1293 }
1294
1295 void zy1000_jtag_add_callback(jtag_callback1_t callback, jtag_callback_data_t data0)
1296 {
1297         zy1000_jtag_add_callback4(zy1000_jtag_convert_to_callback4, data0, (jtag_callback_data_t)callback, 0, 0);
1298 }
1299
1300 void zy1000_flush_callbackqueue(void)
1301 {
1302         /* we have to flush the read queue so we have access to
1303          the data the callbacks will use
1304         */
1305         zy1000_flush_readqueue();
1306         int i;
1307         for (i = 0; i < callbackqueue_pos; i++)
1308         {
1309                 struct callbackentry *entry = &callbackqueue[i];
1310                 jtag_set_error(entry->callback(entry->data0, entry->data1, entry->data2, entry->data3));
1311         }
1312         callbackqueue_pos = 0;
1313 }
1314
1315 static void writeShiftValue(uint8_t *data, int bits)
1316 {
1317         waitIdle();
1318
1319         if (!writeLong((ZY1000_CMD_PEEK << 24) | (ZY1000_JTAG_BASE + 0xc)))
1320         {
1321                 fprintf(stderr, "Could not read from zy1000 server\n");
1322                 exit(-1);
1323         }
1324
1325         if (readqueue_pos >= readqueue_size)
1326         {
1327                 zy1000_flush_readqueue();
1328         }
1329
1330         readqueue[readqueue_pos].dest = data;
1331         readqueue[readqueue_pos].bits = bits;
1332         readqueue_pos++;
1333 }
1334
1335 #else
1336
1337 static void writeShiftValue(uint8_t *data, int bits)
1338 {
1339         uint32_t value;
1340         waitIdle();
1341         ZY1000_PEEK(ZY1000_JTAG_BASE + 0xc, value);
1342         VERBOSE(LOG_INFO("getShiftValue %08x", value));
1343
1344         // data in, LSB to MSB
1345         // we're shifting in data to MSB, shift data to be aligned for returning the value
1346         value >>= 32 - bits;
1347
1348         for (int l = 0; l < bits; l += 8)
1349         {
1350                 data[l/8]=(value >> l)&0xff;
1351         }
1352 }
1353
1354 #endif
1355
1356 #if BUILD_ECOSBOARD
1357 static char tcpip_stack[2048];
1358 static cyg_thread tcpip_thread_object;
1359 static cyg_handle_t tcpip_thread_handle;
1360
1361 static char watchdog_stack[2048];
1362 static cyg_thread watchdog_thread_object;
1363 static cyg_handle_t watchdog_thread_handle;
1364
1365 /* Infinite loop peeking & poking */
1366 static void tcpipserver(void)
1367 {
1368         for (;;)
1369         {
1370                 uint32_t address;
1371                 if (!readLong(&address))
1372                         return;
1373                 enum ZY1000_CMD c = (address >> 24) & 0xff;
1374                 address &= 0xffffff;
1375                 switch (c)
1376                 {
1377                         case ZY1000_CMD_POKE:
1378                         {
1379                                 uint32_t data;
1380                                 if (!readLong(&data))
1381                                         return;
1382                                 address &= ~0x80000000;
1383                                 ZY1000_POKE(address + ZY1000_JTAG_BASE, data);
1384                                 break;
1385                         }
1386                         case ZY1000_CMD_PEEK:
1387                         {
1388                                 uint32_t data;
1389                                 ZY1000_PEEK(address + ZY1000_JTAG_BASE, data);
1390                                 if (!writeLong(data))
1391                                         return;
1392                                 break;
1393                         }
1394                         case ZY1000_CMD_SLEEP:
1395                         {
1396                                 uint32_t data;
1397                                 if (!readLong(&data))
1398                                         return;
1399                                 jtag_sleep(data);
1400                                 break;
1401                         }
1402                         case ZY1000_CMD_WAITIDLE:
1403                         {
1404                                 waitIdle();
1405                                 break;
1406                         }
1407                         default:
1408                                 return;
1409                 }
1410         }
1411 }
1412
1413
1414 static void tcpip_server(cyg_addrword_t data)
1415 {
1416         int so_reuseaddr_option = 1;
1417
1418         int fd;
1419         if ((fd = socket(AF_INET, SOCK_STREAM, 0)) == -1)
1420         {
1421                 LOG_ERROR("error creating socket: %s", strerror(errno));
1422                 exit(-1);
1423         }
1424
1425         setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, (void*) &so_reuseaddr_option,
1426                         sizeof(int));
1427
1428         struct sockaddr_in sin;
1429         unsigned int address_size;
1430         address_size = sizeof(sin);
1431         memset(&sin, 0, sizeof(sin));
1432         sin.sin_family = AF_INET;
1433         sin.sin_addr.s_addr = INADDR_ANY;
1434         sin.sin_port = htons(7777);
1435
1436         if (bind(fd, (struct sockaddr *) &sin, sizeof(sin)) == -1)
1437         {
1438                 LOG_ERROR("couldn't bind to socket: %s", strerror(errno));
1439                 exit(-1);
1440         }
1441
1442         if (listen(fd, 1) == -1)
1443         {
1444                 LOG_ERROR("couldn't listen on socket: %s", strerror(errno));
1445                 exit(-1);
1446         }
1447
1448
1449         for (;;)
1450         {
1451                 tcp_ip = accept(fd, (struct sockaddr *) &sin, &address_size);
1452                 if (tcp_ip < 0)
1453                 {
1454                         continue;
1455                 }
1456
1457                 int flag = 1;
1458                 setsockopt(tcp_ip,      /* socket affected */
1459                                 IPPROTO_TCP,            /* set option at TCP level */
1460                                 TCP_NODELAY,            /* name of option */
1461                                 (char *)&flag,          /* the cast is historical cruft */
1462                                 sizeof(int));           /* length of option value */
1463
1464                 bool save_poll = jtag_poll_get_enabled();
1465
1466                 /* polling will screw up the "connection" */
1467                 jtag_poll_set_enabled(false);
1468
1469                 tcpipserver();
1470
1471                 jtag_poll_set_enabled(save_poll);
1472
1473                 close(tcp_ip);
1474
1475         }
1476         close(fd);
1477
1478 }
1479
1480 #ifdef WATCHDOG_BASE
1481 /* If we connect to port 8888 we must send a char every 10s or the board resets itself */
1482 static void watchdog_server(cyg_addrword_t data)
1483 {
1484         int so_reuseaddr_option = 1;
1485
1486         int fd;
1487         if ((fd = socket(AF_INET, SOCK_STREAM, 0)) == -1)
1488         {
1489                 LOG_ERROR("error creating socket: %s", strerror(errno));
1490                 exit(-1);
1491         }
1492
1493         setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, (void*) &so_reuseaddr_option,
1494                         sizeof(int));
1495
1496         struct sockaddr_in sin;
1497         unsigned int address_size;
1498         address_size = sizeof(sin);
1499         memset(&sin, 0, sizeof(sin));
1500         sin.sin_family = AF_INET;
1501         sin.sin_addr.s_addr = INADDR_ANY;
1502         sin.sin_port = htons(8888);
1503
1504         if (bind(fd, (struct sockaddr *) &sin, sizeof(sin)) == -1)
1505         {
1506                 LOG_ERROR("couldn't bind to socket: %s", strerror(errno));
1507                 exit(-1);
1508         }
1509
1510         if (listen(fd, 1) == -1)
1511         {
1512                 LOG_ERROR("couldn't listen on socket: %s", strerror(errno));
1513                 exit(-1);
1514         }
1515
1516
1517         for (;;)
1518         {
1519                 int watchdog_ip = accept(fd, (struct sockaddr *) &sin, &address_size);
1520
1521                 /* Start watchdog, must be reset every 10 seconds. */
1522                 HAL_WRITE_UINT32(WATCHDOG_BASE + 4, 4);
1523
1524                 if (watchdog_ip < 0)
1525                 {
1526                         LOG_ERROR("couldn't open watchdog socket: %s", strerror(errno));
1527                         exit(-1);
1528                 }
1529
1530                 int flag = 1;
1531                 setsockopt(watchdog_ip, /* socket affected */
1532                                 IPPROTO_TCP,            /* set option at TCP level */
1533                                 TCP_NODELAY,            /* name of option */
1534                                 (char *)&flag,          /* the cast is historical cruft */
1535                                 sizeof(int));           /* length of option value */
1536
1537
1538                 char buf;
1539                 for (;;)
1540                 {
1541                         if (read(watchdog_ip, &buf, 1) == 1)
1542                         {
1543                                 /* Reset timer */
1544                                 HAL_WRITE_UINT32(WATCHDOG_BASE + 8, 0x1234);
1545                                 /* Echo so we can telnet in and see that resetting works */
1546                                 write(watchdog_ip, &buf, 1);
1547                         } else
1548                         {
1549                                 /* Stop tickling the watchdog, the CPU will reset in < 10 seconds
1550                                  * now.
1551                                  */
1552                                 return;
1553                         }
1554
1555                 }
1556
1557                 /* Never reached */
1558         }
1559 }
1560 #endif
1561
1562 int interface_jtag_add_sleep(uint32_t us)
1563 {
1564         jtag_sleep(us);
1565         return ERROR_OK;
1566 }
1567
1568 #endif
1569
1570
1571 int zy1000_init(void)
1572 {
1573 #if BUILD_ECOSBOARD
1574         LOG_USER("%s", ZYLIN_OPENOCD_VERSION);
1575 #endif
1576
1577         ZY1000_POKE(ZY1000_JTAG_BASE + 0x10, 0x30); // Turn on LED1 & LED2
1578
1579         setPower(true); // on by default
1580
1581
1582          /* deassert resets. Important to avoid infinite loop waiting for SRST to deassert */
1583         zy1000_reset(0, 0);
1584         zy1000_speed(jtag_get_speed());
1585
1586
1587 #if BUILD_ECOSBOARD
1588         cyg_thread_create(1, tcpip_server, (cyg_addrword_t) 0, "tcip/ip server",
1589                         (void *) tcpip_stack, sizeof(tcpip_stack),
1590                         &tcpip_thread_handle, &tcpip_thread_object);
1591         cyg_thread_resume(tcpip_thread_handle);
1592 #ifdef WATCHDOG_BASE
1593         cyg_thread_create(1, watchdog_server, (cyg_addrword_t) 0, "watchdog tcip/ip server",
1594                         (void *) watchdog_stack, sizeof(watchdog_stack),
1595                         &watchdog_thread_handle, &watchdog_thread_object);
1596         cyg_thread_resume(watchdog_thread_handle);
1597 #endif
1598 #endif
1599
1600         return ERROR_OK;
1601 }
1602
1603
1604
1605 struct jtag_interface zy1000_interface =
1606 {
1607         .name = "ZY1000",
1608         .supported = DEBUG_CAP_TMS_SEQ,
1609         .execute_queue = NULL,
1610         .speed = zy1000_speed,
1611         .commands = zy1000_commands,
1612         .init = zy1000_init,
1613         .quit = zy1000_quit,
1614         .khz = zy1000_khz,
1615         .speed_div = zy1000_speed_div,
1616         .power_dropout = zy1000_power_dropout,
1617         .srst_asserted = zy1000_srst_asserted,
1618 };