git.sur5r.net Git - openocd/blob - src/jtag/ft2232.c

   1 /***************************************************************************
   2  *   Copyright (C) 2004, 2006 by Dominic Rath                              *
   3  *   Dominic.Rath@gmx.de                                                   *
   4  *                                                                         *
   5  *   This program is free software; you can redistribute it and/or modify  *
   6  *   it under the terms of the GNU General Public License as published by  *
   7  *   the Free Software Foundation; either version 2 of the License, or     *
   8  *   (at your option) any later version.                                   *
   9  *                                                                         *
  10  *   This program is distributed in the hope that it will be useful,       *
  11  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  12  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  13  *   GNU General Public License for more details.                          *
  14  *                                                                         *
  15  *   You should have received a copy of the GNU General Public License     *
  16  *   along with this program; if not, write to the                         *
  17  *   Free Software Foundation, Inc.,                                       *
  18  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
  19  ***************************************************************************/
  20 #ifdef HAVE_CONFIG_H
  21 #include "config.h"
  22 #endif
  23
  24 #if IS_CYGWIN == 1
  25 #include "windows.h"
  26 #undef ERROR
  27 #endif
  28
  29 #include "replacements.h"
  30
  31 /* project specific includes */
  32 #include "log.h"
  33 #include "types.h"
  34 #include "jtag.h"
  35 #include "configuration.h"
  36 #include "time_support.h"
  37
  38 /* system includes */
  39 #include <string.h>
  40 #include <stdlib.h>
  41 #include <unistd.h>
  42
  43 /* FT2232 access library includes */
  44 #if BUILD_FT2232_FTD2XX == 1
  45 #include <ftd2xx.h>
  46 #elif BUILD_FT2232_LIBFTDI == 1
  47 #include <ftdi.h>
  48 #endif
  49
  50 #include <sys/time.h>
  51 #include <time.h>
  52
  53 /* enable this to debug io latency
  54  */
  55 #if 1
  56 #define _DEBUG_USB_IO_
  57 #endif
  58
  59 /* enable this to debug communication
  60  */
  61 #if 1
  62 #define _DEBUG_USB_COMMS_
  63 #endif
  64
  65 int ft2232_execute_queue(void);
  66
  67 int ft2232_speed(int speed);
  68 int ft2232_register_commands(struct command_context_s *cmd_ctx);
  69 int ft2232_init(void);
  70 int ft2232_quit(void);
  71
  72 int ft2232_handle_device_desc_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  73 int ft2232_handle_serial_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  74 int ft2232_handle_layout_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  75 int ft2232_handle_vid_pid_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  76
  77 char *ft2232_device_desc = NULL;
  78 char *ft2232_serial = NULL;
  79 char *ft2232_layout = NULL;
  80 u16 ft2232_vid = 0x0403;
  81 u16 ft2232_pid = 0x6010;
  82
  83 typedef struct ft2232_layout_s
  84 {
  85         char* name;
  86         int(*init)(void);
  87         void(*reset)(int trst, int srst);
  88         void(*blink)(void);
  89 } ft2232_layout_t;
  90
  91 /* init procedures for supported layouts */
  92 int usbjtag_init(void);
  93 int jtagkey_init(void);
  94 int olimex_jtag_init(void);
  95 int m5960_init(void);
  96
  97 /* reset procedures for supported layouts */
  98 void usbjtag_reset(int trst, int srst);
  99 void jtagkey_reset(int trst, int srst);
 100 void olimex_jtag_reset(int trst, int srst);
 101 void m5960_reset(int trst, int srst);
 102
 103 /* blink procedures for layouts that support a blinking led */
 104 void olimex_jtag_blink(void);
 105
 106 ft2232_layout_t ft2232_layouts[] =
 107 {
 108         {"usbjtag", usbjtag_init, usbjtag_reset, NULL},
 109         {"jtagkey", jtagkey_init, jtagkey_reset, NULL},
 110         {"jtagkey_prototype_v1", jtagkey_init, jtagkey_reset, NULL},
 111         {"oocdlink", jtagkey_init, jtagkey_reset, NULL},
 112         {"signalyzer", usbjtag_init, usbjtag_reset, NULL},
 113         {"evb_lm3s811", usbjtag_init, usbjtag_reset, NULL},
 114         {"olimex-jtag", olimex_jtag_init, olimex_jtag_reset, olimex_jtag_blink},
 115         {"m5960", m5960_init, m5960_reset, NULL},
 116         {NULL, NULL, NULL},
 117 };
 118
 119 static u8 nTRST, nTRSTnOE, nSRST, nSRSTnOE;
 120
 121 static ft2232_layout_t *layout;
 122 static u8 low_output = 0x0;
 123 static u8 low_direction = 0x0;
 124 static u8 high_output = 0x0;
 125 static u8 high_direction = 0x0;
 126
 127 #if BUILD_FT2232_FTD2XX == 1
 128 static FT_HANDLE ftdih = NULL;
 129 #elif BUILD_FT2232_LIBFTDI == 1
 130 static struct ftdi_context ftdic;
 131 #endif
 132
 133 static u8 *ft2232_buffer = NULL;
 134 static int ft2232_buffer_size = 0;
 135 static int ft2232_read_pointer = 0;
 136 static int ft2232_expect_read = 0;
 137 #define FT2232_BUFFER_SIZE      131072
 138 #define BUFFER_ADD ft2232_buffer[ft2232_buffer_size++]
 139 #define BUFFER_READ ft2232_buffer[ft2232_read_pointer++]
 140
 141 jtag_interface_t ft2232_interface =
 142 {
 143
 144         .name = "ft2232",
 145
 146         .execute_queue = ft2232_execute_queue,
 147
 148         .support_pathmove = 1,
 149
 150         .speed = ft2232_speed,
 151         .register_commands = ft2232_register_commands,
 152         .init = ft2232_init,
 153         .quit = ft2232_quit,
 154 };
 155
 156 int ft2232_write(u8 *buf, int size, u32* bytes_written)
 157 {
 158 #if BUILD_FT2232_FTD2XX == 1
 159         FT_STATUS status;
 160         DWORD dw_bytes_written;
 161         if ((status = FT_Write(ftdih, buf, size, &dw_bytes_written)) != FT_OK)
 162         {
 163                 *bytes_written = dw_bytes_written;
 164                 ERROR("FT_Write returned: %i", status);
 165                 return ERROR_JTAG_DEVICE_ERROR;
 166         }
 167         else
 168         {
 169                 *bytes_written = dw_bytes_written;
 170                 return ERROR_OK;
 171         }
 172 #elif BUILD_FT2232_LIBFTDI == 1
 173         int retval;
 174         if ((retval = ftdi_write_data(&ftdic, buf, size)) < 0)
 175         {
 176                 *bytes_written = 0;
 177                 ERROR("ftdi_write_data: %s", ftdi_get_error_string(&ftdic));
 178                 return ERROR_JTAG_DEVICE_ERROR;
 179         }
 180         else
 181         {
 182                 *bytes_written = retval;
 183                 return ERROR_OK;
 184         }
 185 #endif
 186 }
 187
 188 int ft2232_read(u8* buf, int size, u32* bytes_read)
 189 {
 190 #if BUILD_FT2232_FTD2XX == 1
 191         DWORD dw_bytes_read;
 192         FT_STATUS status;
 193         int timeout = 5;
 194         *bytes_read = 0;
 195
 196         while ((*bytes_read < size) && timeout--)
 197         {
 198                 if ((status = FT_Read(ftdih, buf, size, &dw_bytes_read)) != FT_OK)
 199                 {
 200                         *bytes_read = 0;
 201                         ERROR("FT_Read returned: %i", status);
 202                         return ERROR_JTAG_DEVICE_ERROR;
 203                 }
 204                 *bytes_read += dw_bytes_read;
 205         }
 206 #elif BUILD_FT2232_LIBFTDI == 1
 207         int retval;
 208         int timeout = 100;
 209         *bytes_read = 0;
 210
 211         while ((*bytes_read < size) && timeout--)
 212         {
 213                 if ((retval = ftdi_read_data(&ftdic, buf + *bytes_read, size - *bytes_read)) < 0)
 214                 {
 215                         *bytes_read = 0;
 216                         ERROR("ftdi_read_data: %s", ftdi_get_error_string(&ftdic));
 217                         return ERROR_JTAG_DEVICE_ERROR;
 218                 }
 219                 *bytes_read += retval;
 220         }
 221 #endif
 222
 223         if (*bytes_read < size)
 224         {
 225                 ERROR("couldn't read the requested number of bytes from FT2232 device (%i < %i)", *bytes_read, size);
 226                 return ERROR_JTAG_DEVICE_ERROR;
 227         }
 228
 229         return ERROR_OK;
 230 }
 231
 232 int ft2232_speed(int speed)
 233 {
 234         u8 buf[3];
 235         int retval;
 236         u32 bytes_written;
 237
 238         buf[0] = 0x86; /* command "set divisor" */
 239         buf[1] = speed & 0xff; /* valueL (0=6MHz, 1=3MHz, 2=1.5MHz, ...*/
 240         buf[2] = (speed >> 8) & 0xff; /* valueH */
 241
 242         DEBUG("%2.2x %2.2x %2.2x", buf[0], buf[1], buf[2]);
 243         if (((retval = ft2232_write(buf, 3, &bytes_written)) != ERROR_OK) || (bytes_written != 3))
 244         {
 245                 ERROR("couldn't set FT2232 TCK speed");
 246                 return retval;
 247         }
 248
 249         return ERROR_OK;
 250 }
 251
 252 int ft2232_register_commands(struct command_context_s *cmd_ctx)
 253 {
 254         register_command(cmd_ctx, NULL, "ft2232_device_desc", ft2232_handle_device_desc_command,
 255                 COMMAND_CONFIG, NULL);
 256         register_command(cmd_ctx, NULL, "ft2232_serial", ft2232_handle_serial_command,
 257                 COMMAND_CONFIG, NULL);
 258         register_command(cmd_ctx, NULL, "ft2232_layout", ft2232_handle_layout_command,
 259                 COMMAND_CONFIG, NULL);
 260         register_command(cmd_ctx, NULL, "ft2232_vid_pid", ft2232_handle_vid_pid_command,
 261                                          COMMAND_CONFIG, NULL);
 262         return ERROR_OK;
 263 }
 264
 265 void ft2232_end_state(state)
 266 {
 267         if (tap_move_map[state] != -1)
 268                 end_state = state;
 269         else
 270         {
 271                 ERROR("BUG: %i is not a valid end state", state);
 272                 exit(-1);
 273         }
 274 }
 275
 276 void ft2232_read_scan(enum scan_type type, u8* buffer, int scan_size)
 277 {
 278         int num_bytes = ((scan_size + 7) / 8);
 279         int bits_left = scan_size;
 280         int cur_byte = 0;
 281
 282         while(num_bytes-- > 1)
 283         {
 284                 buffer[cur_byte] = BUFFER_READ;
 285                 cur_byte++;
 286                 bits_left -= 8;
 287         }
 288
 289         buffer[cur_byte] = 0x0;
 290
 291         if (bits_left > 1)
 292         {
 293                 buffer[cur_byte] = BUFFER_READ >> 1;
 294         }
 295
 296         buffer[cur_byte] = (buffer[cur_byte] | ((BUFFER_READ & 0x02) << 6)) >> (8 - bits_left);
 297
 298 }
 299
 300 void ft2232_debug_dump_buffer(void)
 301 {
 302         int i;
 303         char line[256];
 304         char *line_p = line;
 305
 306         for (i = 0; i < ft2232_buffer_size; i++)
 307         {
 308                 line_p += snprintf(line_p, 256 - (line_p - line), "%2.2x ", ft2232_buffer[i]);
 309                 if (i % 16 == 15)
 310                 {
 311                         DEBUG("%s", line);
 312                         line_p = line;
 313                 }
 314         }
 315
 316         if (line_p != line)
 317                 DEBUG("%s", line);
 318 }
 319
 320 int ft2232_send_and_recv(jtag_command_t *first, jtag_command_t *last)
 321 {
 322         jtag_command_t *cmd;
 323         u8 *buffer;
 324         int scan_size;
 325         enum scan_type type;
 326         int retval;
 327         u32 bytes_written;
 328         u32 bytes_read;
 329
 330 #ifdef _DEBUG_USB_IO_
 331         struct timeval start, inter, inter2, end;
 332         struct timeval d_inter, d_inter2, d_end;
 333 #endif
 334
 335 #ifdef _DEBUG_USB_COMMS_
 336         DEBUG("write buffer (size %i):", ft2232_buffer_size);
 337         ft2232_debug_dump_buffer();
 338 #endif
 339
 340 #ifdef _DEBUG_USB_IO_
 341         gettimeofday(&start, NULL);
 342 #endif
 343
 344         if ((retval = ft2232_write(ft2232_buffer, ft2232_buffer_size, &bytes_written)) != ERROR_OK)
 345         {
 346                 ERROR("couldn't write MPSSE commands to FT2232");
 347                 exit(-1);
 348         }
 349
 350 #ifdef _DEBUG_USB_IO_
 351         gettimeofday(&inter, NULL);
 352 #endif
 353
 354         if (ft2232_expect_read)
 355         {
 356                 int timeout = 100;
 357                 ft2232_buffer_size = 0;
 358
 359 #ifdef _DEBUG_USB_IO_
 360                 gettimeofday(&inter2, NULL);
 361 #endif
 362
 363                 if ((retval = ft2232_read(ft2232_buffer, ft2232_expect_read, &bytes_read)) != ERROR_OK)
 364                 {
 365                         ERROR("couldn't read from FT2232");
 366                         exit(-1);
 367                 }
 368
 369 #ifdef _DEBUG_USB_IO_
 370                 gettimeofday(&end, NULL);
 371
 372                 timeval_subtract(&d_inter, &inter, &start);
 373                 timeval_subtract(&d_inter2, &inter2, &start);
 374                 timeval_subtract(&d_end, &end, &start);
 375
 376                 INFO("inter: %i.%i, inter2: %i.%i end: %i.%i", d_inter.tv_sec, d_inter.tv_usec, d_inter2.tv_sec, d_inter2.tv_usec, d_end.tv_sec, d_end.tv_usec);
 377 #endif
 378
 379
 380                 ft2232_buffer_size = bytes_read;
 381
 382                 if (ft2232_expect_read != ft2232_buffer_size)
 383                 {
 384                         ERROR("ft2232_expect_read (%i) != ft2232_buffer_size (%i) (%i retries)", ft2232_expect_read, ft2232_buffer_size, 100 - timeout);
 385                         ft2232_debug_dump_buffer();
 386
 387                         exit(-1);
 388                 }
 389
 390 #ifdef _DEBUG_USB_COMMS_
 391                 DEBUG("read buffer (%i retries): %i bytes", 100 - timeout, ft2232_buffer_size);
 392                 ft2232_debug_dump_buffer();
 393 #endif
 394         }
 395
 396         ft2232_expect_read = 0;
 397         ft2232_read_pointer = 0;
 398
 399         cmd = first;
 400         while (cmd != last)
 401         {
 402                 switch (cmd->type)
 403                 {
 404                         case JTAG_SCAN:
 405                                 type = jtag_scan_type(cmd->cmd.scan);
 406                                 if (type != SCAN_OUT)
 407                                 {
 408                                         scan_size = jtag_scan_size(cmd->cmd.scan);
 409                                         buffer = calloc(CEIL(scan_size, 8), 1);
 410                                         ft2232_read_scan(type, buffer, scan_size);
 411                                         jtag_read_buffer(buffer, cmd->cmd.scan);
 412                                         free(buffer);
 413                                 }
 414                                 break;
 415                         default:
 416                                 break;
 417                 }
 418                 cmd = cmd->next;
 419         }
 420
 421         ft2232_buffer_size = 0;
 422
 423         return ERROR_OK;
 424 }
 425
 426 void ft2232_add_pathmove(pathmove_command_t *cmd)
 427 {
 428         int num_states = cmd->num_states;
 429         u8 tms_byte;
 430         int state_count;
 431
 432         state_count = 0;
 433         while (num_states)
 434         {
 435                 tms_byte = 0x0;
 436                 int bit_count = 0;
 437
 438                 /* command "Clock Data to TMS/CS Pin (no Read)" */
 439                 BUFFER_ADD = 0x4b;
 440                 /* number of states remaining */
 441                 BUFFER_ADD = (num_states % 7) - 1;
 442
 443                 while (num_states % 7)
 444                 {
 445                         if (tap_transitions[cur_state].low == cmd->path[state_count])
 446                                 buf_set_u32(&tms_byte, bit_count++, 1, 0x0);
 447                         else if (tap_transitions[cur_state].high == cmd->path[state_count])
 448                                 buf_set_u32(&tms_byte, bit_count++, 1, 0x1);
 449                         else
 450                         {
 451                                 ERROR("BUG: %s -> %s isn't a valid TAP transition", tap_state_strings[cur_state], tap_state_strings[cmd->path[state_count]]);
 452                                 exit(-1);
 453                         }
 454
 455                         cur_state = cmd->path[state_count];
 456                         state_count++;
 457                         num_states--;
 458                 }
 459
 460                 BUFFER_ADD = tms_byte;
 461         }
 462
 463         end_state = cur_state;
 464 }
 465
 466 void ft2232_add_scan(int ir_scan, enum scan_type type, u8 *buffer, int scan_size)
 467 {
 468         int num_bytes = (scan_size + 7) / 8;
 469         int bits_left = scan_size;
 470         int cur_byte = 0;
 471         int last_bit;
 472
 473         if (!((!ir_scan && (cur_state == TAP_SD)) || (ir_scan && (cur_state == TAP_SI))))
 474         {
 475                 /* command "Clock Data to TMS/CS Pin (no Read)" */
 476                 BUFFER_ADD = 0x4b;
 477                 /* scan 7 bit */
 478                 BUFFER_ADD = 0x6;
 479                 /* TMS data bits */
 480                 if (ir_scan)
 481                 {
 482                         BUFFER_ADD = TAP_MOVE(cur_state, TAP_SI);
 483                         cur_state = TAP_SI;
 484                 }
 485                 else
 486                 {
 487                         BUFFER_ADD = TAP_MOVE(cur_state, TAP_SD);
 488                         cur_state = TAP_SD;
 489                 }
 490                 //DEBUG("added TMS scan (no read)");
 491         }
 492
 493         /* add command for complete bytes */
 494         while (num_bytes > 1)
 495         {
 496                 int thisrun_bytes;
 497                 if (type == SCAN_IO)
 498                 {
 499                         /* Clock Data Bytes In and Out LSB First */
 500                         BUFFER_ADD = 0x39;
 501                         //DEBUG("added TDI bytes (io %i)", num_bytes);
 502                 }
 503                 else if (type == SCAN_OUT)
 504                 {
 505                         /* Clock Data Bytes Out on -ve Clock Edge LSB First (no Read) */
 506                         BUFFER_ADD = 0x19;
 507                         //DEBUG("added TDI bytes (o)");
 508                 }
 509                 else if (type == SCAN_IN)
 510                 {
 511                         /* Clock Data Bytes In on +ve Clock Edge LSB First (no Write) */
 512                         BUFFER_ADD = 0x28;
 513                         //DEBUG("added TDI bytes (i %i)", num_bytes);
 514                 }
 515                 thisrun_bytes = (num_bytes > 65537) ? 65536 : (num_bytes - 1);
 516                 num_bytes -= thisrun_bytes;
 517                 BUFFER_ADD = (thisrun_bytes - 1) & 0xff;
 518                 BUFFER_ADD = ((thisrun_bytes - 1) >> 8) & 0xff;
 519                 if (type != SCAN_IN)
 520                 {
 521                         /* add complete bytes */
 522                         while(thisrun_bytes-- > 0)
 523                         {
 524                                 BUFFER_ADD = buffer[cur_byte];
 525                                 cur_byte++;
 526                                 bits_left -= 8;
 527                         }
 528                 }
 529                 else /* (type == SCAN_IN) */
 530                 {
 531                         bits_left -= 8 * (thisrun_bytes);
 532                 }
 533         }
 534
 535         /* the most signifcant bit is scanned during TAP movement */
 536         if (type != SCAN_IN)
 537                 last_bit = (buffer[cur_byte] >> (bits_left - 1)) & 0x1;
 538         else
 539                 last_bit = 0;
 540
 541         /* process remaining bits but the last one */
 542         if (bits_left > 1)
 543         {
 544                 if (type == SCAN_IO)
 545                 {
 546                         /* Clock Data Bits In and Out LSB First */
 547                         BUFFER_ADD = 0x3b;
 548                         //DEBUG("added TDI bits (io) %i", bits_left - 1);
 549                 }
 550                 else if (type == SCAN_OUT)
 551                 {
 552                         /* Clock Data Bits Out on -ve Clock Edge LSB First (no Read) */
 553                         BUFFER_ADD = 0x1b;
 554                         //DEBUG("added TDI bits (o)");
 555                 }
 556                 else if (type == SCAN_IN)
 557                 {
 558                         /* Clock Data Bits In on +ve Clock Edge LSB First (no Write) */
 559                         BUFFER_ADD = 0x2a;
 560                         //DEBUG("added TDI bits (i %i)", bits_left - 1);
 561                 }
 562                 BUFFER_ADD = bits_left - 2;
 563                 if (type != SCAN_IN)
 564                         BUFFER_ADD = buffer[cur_byte];
 565         }
 566
 567         if ((ir_scan && (end_state == TAP_SI)) ||
 568                 (!ir_scan && (end_state == TAP_SD)))
 569         {
 570                 if (type == SCAN_IO)
 571                 {
 572                         /* Clock Data Bits In and Out LSB First */
 573                         BUFFER_ADD = 0x3b;
 574                         //DEBUG("added TDI bits (io) %i", bits_left - 1);
 575                 }
 576                 else if (type == SCAN_OUT)
 577                 {
 578                         /* Clock Data Bits Out on -ve Clock Edge LSB First (no Read) */
 579                         BUFFER_ADD = 0x1b;
 580                         //DEBUG("added TDI bits (o)");
 581                 }
 582                 else if (type == SCAN_IN)
 583                 {
 584                         /* Clock Data Bits In on +ve Clock Edge LSB First (no Write) */
 585                         BUFFER_ADD = 0x2a;
 586                         //DEBUG("added TDI bits (i %i)", bits_left - 1);
 587                 }
 588                 BUFFER_ADD = 0x0;
 589                 BUFFER_ADD = last_bit;
 590         }
 591         else
 592         {
 593                 /* move from Shift-IR/DR to end state */
 594                 if (type != SCAN_OUT)
 595                 {
 596                         /* Clock Data to TMS/CS Pin with Read */
 597                         BUFFER_ADD = 0x6b;
 598                         //DEBUG("added TMS scan (read)");
 599                 }
 600                 else
 601                 {
 602                         /* Clock Data to TMS/CS Pin (no Read) */
 603                         BUFFER_ADD = 0x4b;
 604                         //DEBUG("added TMS scan (no read)");
 605                 }
 606                 BUFFER_ADD = 0x6;
 607                 BUFFER_ADD = TAP_MOVE(cur_state, end_state) | (last_bit << 7);
 608                 cur_state = end_state;
 609         }
 610 }
 611
 612 int ft2232_large_scan(scan_command_t *cmd, enum scan_type type, u8 *buffer, int scan_size)
 613 {
 614         int num_bytes = (scan_size + 7) / 8;
 615         int bits_left = scan_size;
 616         int cur_byte = 0;
 617         int last_bit;
 618         u8 *receive_buffer = malloc(CEIL(scan_size, 8));
 619         u8 *receive_pointer = receive_buffer;
 620         u32 bytes_written;
 621         u32 bytes_read;
 622         int retval;
 623         int thisrun_read = 0;
 624
 625         if (cmd->ir_scan)
 626         {
 627                 ERROR("BUG: large IR scans are not supported");
 628                 exit(-1);
 629         }
 630
 631         if (cur_state != TAP_SD)
 632         {
 633                 /* command "Clock Data to TMS/CS Pin (no Read)" */
 634                 BUFFER_ADD = 0x4b;
 635                 /* scan 7 bit */
 636                 BUFFER_ADD = 0x6;
 637                 /* TMS data bits */
 638                 BUFFER_ADD = TAP_MOVE(cur_state, TAP_SD);
 639                 cur_state = TAP_SD;
 640         }
 641
 642         if ((retval = ft2232_write(ft2232_buffer, ft2232_buffer_size, &bytes_written)) != ERROR_OK)
 643         {
 644                 ERROR("couldn't write MPSSE commands to FT2232");
 645                 exit(-1);
 646         }
 647         DEBUG("ft2232_buffer_size: %i, bytes_written: %i", ft2232_buffer_size, bytes_written);
 648         ft2232_buffer_size = 0;
 649
 650         /* add command for complete bytes */
 651         while (num_bytes > 1)
 652         {
 653                 int thisrun_bytes;
 654
 655                 if (type == SCAN_IO)
 656                 {
 657                         /* Clock Data Bytes In and Out LSB First */
 658                         BUFFER_ADD = 0x39;
 659                         //DEBUG("added TDI bytes (io %i)", num_bytes);
 660                 }
 661                 else if (type == SCAN_OUT)
 662                 {
 663                         /* Clock Data Bytes Out on -ve Clock Edge LSB First (no Read) */
 664                         BUFFER_ADD = 0x19;
 665                         //DEBUG("added TDI bytes (o)");
 666                 }
 667                 else if (type == SCAN_IN)
 668                 {
 669                         /* Clock Data Bytes In on +ve Clock Edge LSB First (no Write) */
 670                         BUFFER_ADD = 0x28;
 671                         //DEBUG("added TDI bytes (i %i)", num_bytes);
 672                 }
 673                 thisrun_bytes = (num_bytes > 65537) ? 65536 : (num_bytes - 1);
 674                 thisrun_read = thisrun_bytes;
 675                 num_bytes -= thisrun_bytes;
 676                 BUFFER_ADD = (thisrun_bytes - 1) & 0xff;
 677                 BUFFER_ADD = ((thisrun_bytes - 1) >> 8) & 0xff;
 678                 if (type != SCAN_IN)
 679                 {
 680                         /* add complete bytes */
 681                         while(thisrun_bytes-- > 0)
 682                         {
 683                                 BUFFER_ADD = buffer[cur_byte];
 684                                 cur_byte++;
 685                                 bits_left -= 8;
 686                         }
 687                 }
 688                 else /* (type == SCAN_IN) */
 689                 {
 690                         bits_left -= 8 * (thisrun_bytes);
 691                 }
 692
 693                 if ((retval = ft2232_write(ft2232_buffer, ft2232_buffer_size, &bytes_written)) != ERROR_OK)
 694                 {
 695                         ERROR("couldn't write MPSSE commands to FT2232");
 696                         exit(-1);
 697                 }
 698                 DEBUG("ft2232_buffer_size: %i, bytes_written: %i", ft2232_buffer_size, bytes_written);
 699                 ft2232_buffer_size = 0;
 700
 701                 if (type != SCAN_OUT)
 702                 {
 703                         if ((retval = ft2232_read(receive_pointer, thisrun_read, &bytes_read)) != ERROR_OK)
 704                         {
 705                                 ERROR("couldn't read from FT2232");
 706                                 exit(-1);
 707                         }
 708                         DEBUG("thisrun_read: %i, bytes_read: %i", thisrun_read, bytes_read);
 709                         receive_pointer += bytes_read;
 710                 }
 711         }
 712
 713         thisrun_read = 0;
 714
 715         /* the most signifcant bit is scanned during TAP movement */
 716         if (type != SCAN_IN)
 717                 last_bit = (buffer[cur_byte] >> (bits_left - 1)) & 0x1;
 718         else
 719                 last_bit = 0;
 720
 721         /* process remaining bits but the last one */
 722         if (bits_left > 1)
 723         {
 724                 if (type == SCAN_IO)
 725                 {
 726                         /* Clock Data Bits In and Out LSB First */
 727                         BUFFER_ADD = 0x3b;
 728                         //DEBUG("added TDI bits (io) %i", bits_left - 1);
 729                 }
 730                 else if (type == SCAN_OUT)
 731                 {
 732                         /* Clock Data Bits Out on -ve Clock Edge LSB First (no Read) */
 733                         BUFFER_ADD = 0x1b;
 734                         //DEBUG("added TDI bits (o)");
 735                 }
 736                 else if (type == SCAN_IN)
 737                 {
 738                         /* Clock Data Bits In on +ve Clock Edge LSB First (no Write) */
 739                         BUFFER_ADD = 0x2a;
 740                         //DEBUG("added TDI bits (i %i)", bits_left - 1);
 741                 }
 742                 BUFFER_ADD = bits_left - 2;
 743                 if (type != SCAN_IN)
 744                         BUFFER_ADD = buffer[cur_byte];
 745
 746                 if (type != SCAN_OUT)
 747                         thisrun_read += 2;
 748         }
 749
 750         if (end_state == TAP_SD)
 751         {
 752                 if (type == SCAN_IO)
 753                 {
 754                         /* Clock Data Bits In and Out LSB First */
 755                         BUFFER_ADD = 0x3b;
 756                         //DEBUG("added TDI bits (io) %i", bits_left - 1);
 757                 }
 758                 else if (type == SCAN_OUT)
 759                 {
 760                         /* Clock Data Bits Out on -ve Clock Edge LSB First (no Read) */
 761                         BUFFER_ADD = 0x1b;
 762                         //DEBUG("added TDI bits (o)");
 763                 }
 764                 else if (type == SCAN_IN)
 765                 {
 766                         /* Clock Data Bits In on +ve Clock Edge LSB First (no Write) */
 767                         BUFFER_ADD = 0x2a;
 768                         //DEBUG("added TDI bits (i %i)", bits_left - 1);
 769                 }
 770                 BUFFER_ADD = 0x0;
 771                 BUFFER_ADD = last_bit;
 772         }
 773         else
 774         {
 775                 /* move from Shift-IR/DR to end state */
 776                 if (type != SCAN_OUT)
 777                 {
 778                         /* Clock Data to TMS/CS Pin with Read */
 779                         BUFFER_ADD = 0x6b;
 780                         //DEBUG("added TMS scan (read)");
 781                 }
 782                 else
 783                 {
 784                         /* Clock Data to TMS/CS Pin (no Read) */
 785                         BUFFER_ADD = 0x4b;
 786                         //DEBUG("added TMS scan (no read)");
 787                 }
 788                 BUFFER_ADD = 0x6;
 789                 BUFFER_ADD = TAP_MOVE(cur_state, end_state) | (last_bit << 7);
 790                 cur_state = end_state;
 791         }
 792
 793         if (type != SCAN_OUT)
 794                 thisrun_read += 1;
 795
 796         if ((retval = ft2232_write(ft2232_buffer, ft2232_buffer_size, &bytes_written)) != ERROR_OK)
 797         {
 798                 ERROR("couldn't write MPSSE commands to FT2232");
 799                 exit(-1);
 800         }
 801         DEBUG("ft2232_buffer_size: %i, bytes_written: %i", ft2232_buffer_size, bytes_written);
 802         ft2232_buffer_size = 0;
 803
 804         if (type != SCAN_OUT)
 805         {
 806                 if ((retval = ft2232_read(receive_pointer, thisrun_read, &bytes_read)) != ERROR_OK)
 807                 {
 808                         ERROR("couldn't read from FT2232");
 809                         exit(-1);
 810                 }
 811                 DEBUG("thisrun_read: %i, bytes_read: %i", thisrun_read, bytes_read);
 812                 receive_pointer += bytes_read;
 813         }
 814
 815         return ERROR_OK;
 816 }
 817
 818 int ft2232_predict_scan_out(int scan_size, enum scan_type type)
 819 {
 820         int predicted_size = 3;
 821         int num_bytes = (scan_size - 1) / 8;
 822
 823         if (cur_state != TAP_SD)
 824                 predicted_size += 3;
 825
 826         if (type == SCAN_IN)    /* only from device to host */
 827         {
 828                 /* complete bytes */
 829                 predicted_size += (CEIL(num_bytes, 65536)) * 3;
 830                 /* remaining bits - 1 (up to 7) */
 831                 predicted_size += ((scan_size - 1) % 8) ? 2 : 0;
 832         }
 833         else                                    /* host to device, or bidirectional */
 834         {
 835                 /* complete bytes */
 836                 predicted_size += num_bytes + (CEIL(num_bytes, 65536)) * 3;
 837                 /* remaining bits -1 (up to 7) */
 838                 predicted_size += ((scan_size - 1) % 8) ? 3 : 0;
 839         }
 840
 841         return predicted_size;
 842 }
 843
 844 int ft2232_predict_scan_in(int scan_size, enum scan_type type)
 845 {
 846         int predicted_size = 0;
 847
 848         if (type != SCAN_OUT)
 849         {
 850                 /* complete bytes */
 851                 predicted_size += (CEIL(scan_size, 8) > 1) ? (CEIL(scan_size, 8) - 1) : 0;
 852                 /* remaining bits - 1 */
 853                 predicted_size += ((scan_size - 1) % 8) ? 1 : 0;
 854                 /* last bit (from TMS scan) */
 855                 predicted_size += 1;
 856         }
 857
 858         //DEBUG("scan_size: %i, predicted_size: %i", scan_size, predicted_size);
 859
 860         return predicted_size;
 861 }
 862
 863 void usbjtag_reset(int trst, int srst)
 864 {
 865         if (trst == 1)
 866         {
 867                 cur_state = TAP_TLR;
 868                 if (jtag_reset_config & RESET_TRST_OPEN_DRAIN)
 869                         low_direction |= nTRSTnOE;      /* switch to output pin (output is low) */
 870                 else
 871                         low_output &= ~nTRST;   /* switch output low */
 872         }
 873         else if (trst == 0)
 874         {
 875                 if (jtag_reset_config & RESET_TRST_OPEN_DRAIN)
 876                         low_direction &= ~nTRSTnOE; /* switch to input pin (high-Z + internal and external pullup) */
 877                 else
 878                         low_output |= nTRST; /* switch output high */
 879         }
 880
 881         if (srst == 1)
 882         {
 883                 if (jtag_reset_config & RESET_SRST_PUSH_PULL)
 884                         low_output &= ~nSRST;   /* switch output low */
 885                 else
 886                         low_direction |= nSRSTnOE;      /* switch to output pin (output is low) */
 887         }
 888         else if (srst == 0)
 889         {
 890                 if (jtag_reset_config & RESET_SRST_PUSH_PULL)
 891                         low_output |= nSRST;    /* switch output high */
 892                 else
 893                         low_direction &= ~nSRSTnOE;     /* switch to input pin (high-Z) */
 894         }
 895
 896         /* command "set data bits low byte" */
 897         BUFFER_ADD = 0x80;
 898         BUFFER_ADD = low_output;
 899         BUFFER_ADD = low_direction;
 900
 901 }
 902
 903 void jtagkey_reset(int trst, int srst)
 904 {
 905         if (trst == 1)
 906         {
 907                 cur_state = TAP_TLR;
 908                 if (jtag_reset_config & RESET_TRST_OPEN_DRAIN)
 909                         high_output &= ~nTRSTnOE;
 910                 else
 911                         high_output &= ~nTRST;
 912         }
 913         else if (trst == 0)
 914         {
 915                 if (jtag_reset_config & RESET_TRST_OPEN_DRAIN)
 916                         high_output |= nTRSTnOE;
 917                 else
 918                         high_output |= nTRST;
 919         }
 920
 921         if (srst == 1)
 922         {
 923                 if (jtag_reset_config & RESET_SRST_PUSH_PULL)
 924                         high_output &= ~nSRST;
 925                 else
 926                         high_output &= ~nSRSTnOE;
 927         }
 928         else if (srst == 0)
 929         {
 930                 if (jtag_reset_config & RESET_SRST_PUSH_PULL)
 931                         high_output |= nSRST;
 932                 else
 933                         high_output |= nSRSTnOE;
 934         }
 935
 936         /* command "set data bits high byte" */
 937         BUFFER_ADD = 0x82;
 938         BUFFER_ADD = high_output;
 939         BUFFER_ADD = high_direction;
 940         DEBUG("trst: %i, srst: %i, high_output: 0x%2.2x, high_direction: 0x%2.2x", trst, srst, high_output, high_direction);
 941 }
 942
 943 void olimex_jtag_reset(int trst, int srst)
 944 {
 945         if (trst == 1)
 946         {
 947                 cur_state = TAP_TLR;
 948                 if (jtag_reset_config & RESET_TRST_OPEN_DRAIN)
 949                         high_output &= ~nTRSTnOE;
 950                 else
 951                         high_output &= ~nTRST;
 952         }
 953         else if (trst == 0)
 954         {
 955                 if (jtag_reset_config & RESET_TRST_OPEN_DRAIN)
 956                         high_output |= nTRSTnOE;
 957                 else
 958                         high_output |= nTRST;
 959         }
 960
 961     if (srst == 1)
 962     {
 963         high_output |= nSRST;
 964     }
 965     else if (srst == 0)
 966     {
 967         high_output &= ~nSRST;
 968     }
 969
 970     /* command "set data bits high byte" */
 971     BUFFER_ADD = 0x82;
 972     BUFFER_ADD = high_output;
 973     BUFFER_ADD = high_direction;
 974     DEBUG("trst: %i, srst: %i, high_output: 0x%2.2x, high_direction: 0x%2.2x", trst, srst, high_output, high_direction);
 975 }
 976
 977 void m5960_reset(int trst, int srst)
 978 {
 979         if (trst == 1)
 980         {
 981                 cur_state = TAP_TLR;
 982                 low_output &= ~nTRST;
 983         }
 984         else if (trst == 0)
 985         {
 986                 low_output |= nTRST;
 987         }
 988
 989     if (srst == 1)
 990     {
 991         low_output |= nSRST;
 992     }
 993     else if (srst == 0)
 994     {
 995         low_output &= ~nSRST;
 996     }
 997
 998     /* command "set data bits low byte" */
 999     BUFFER_ADD = 0x80;
1000     BUFFER_ADD = low_output;
1001     BUFFER_ADD = low_direction;
1002     DEBUG("trst: %i, srst: %i, high_output: 0x%2.2x, high_direction: 0x%2.2x", trst, srst, high_output, high_direction);
1003 }
1004
1005 int ft2232_execute_queue()
1006 {
1007         jtag_command_t *cmd = jtag_command_queue; /* currently processed command */
1008         jtag_command_t *first_unsent = cmd;     /* next command that has to be sent */
1009         u8 *buffer;
1010         int scan_size;  /* size of IR or DR scan */
1011         enum scan_type type;
1012         int i;
1013         int predicted_size = 0;
1014         int require_send = 0;
1015
1016         ft2232_buffer_size = 0;
1017         ft2232_expect_read = 0;
1018
1019         /* blink, if the current layout has that feature */
1020         if (layout->blink)
1021                 layout->blink();
1022
1023         while (cmd)
1024         {
1025                 switch(cmd->type)
1026                 {
1027                         case JTAG_END_STATE:
1028                                 if (cmd->cmd.end_state->end_state != -1)
1029                                         ft2232_end_state(cmd->cmd.end_state->end_state);
1030                                 break;
1031                         case JTAG_RESET:
1032                                 /* only send the maximum buffer size that FT2232C can handle */
1033                                 predicted_size = 3;
1034                                 if (ft2232_buffer_size + predicted_size + 1 > FT2232_BUFFER_SIZE)
1035                                 {
1036                                         ft2232_send_and_recv(first_unsent, cmd);
1037                                         require_send = 0;
1038                                         first_unsent = cmd;
1039                                 }
1040
1041                                 layout->reset(cmd->cmd.reset->trst, cmd->cmd.reset->srst);
1042                                 require_send = 1;
1043
1044 #ifdef _DEBUG_JTAG_IO_
1045                                 DEBUG("trst: %i, srst: %i", cmd->cmd.reset->trst, cmd->cmd.reset->srst);
1046 #endif
1047                                 break;
1048                         case JTAG_RUNTEST:
1049                                 /* only send the maximum buffer size that FT2232C can handle */
1050                                 predicted_size = 0;
1051                                 if (cur_state != TAP_RTI)
1052                                         predicted_size += 3;
1053                                 predicted_size += 3 * CEIL(cmd->cmd.runtest->num_cycles, 7);
1054                                 if ((cmd->cmd.runtest->end_state != -1) && (cmd->cmd.runtest->end_state != TAP_RTI))
1055                                         predicted_size += 3;
1056                                 if ((cmd->cmd.runtest->end_state == -1) && (end_state != TAP_RTI))
1057                                         predicted_size += 3;
1058                                 if (ft2232_buffer_size + predicted_size + 1 > FT2232_BUFFER_SIZE)
1059                                 {
1060                                         ft2232_send_and_recv(first_unsent, cmd);
1061                                         require_send = 0;
1062                                         first_unsent = cmd;
1063                                 }
1064                                 if (cur_state != TAP_RTI)
1065                                 {
1066                                         /* command "Clock Data to TMS/CS Pin (no Read)" */
1067                                         BUFFER_ADD = 0x4b;
1068                                         /* scan 7 bit */
1069                                         BUFFER_ADD = 0x6;
1070                                         /* TMS data bits */
1071                                         BUFFER_ADD = TAP_MOVE(cur_state, TAP_RTI);
1072                                         cur_state = TAP_RTI;
1073                                         require_send = 1;
1074                                 }
1075                                 i = cmd->cmd.runtest->num_cycles;
1076                                 while (i > 0)
1077                                 {
1078                                         /* command "Clock Data to TMS/CS Pin (no Read)" */
1079                                         BUFFER_ADD = 0x4b;
1080                                         /* scan 7 bit */
1081                                         BUFFER_ADD = (i > 7) ? 6 : (i - 1);
1082                                         /* TMS data bits */
1083                                         BUFFER_ADD = 0x0;
1084                                         cur_state = TAP_RTI;
1085                                         i -= (i > 7) ? 7 : i;
1086                                         //DEBUG("added TMS scan (no read)");
1087                                 }
1088                                 if (cmd->cmd.runtest->end_state != -1)
1089                                         ft2232_end_state(cmd->cmd.runtest->end_state);
1090                                 if (cur_state != end_state)
1091                                 {
1092                                         /* command "Clock Data to TMS/CS Pin (no Read)" */
1093                                         BUFFER_ADD = 0x4b;
1094                                         /* scan 7 bit */
1095                                         BUFFER_ADD = 0x6;
1096                                         /* TMS data bits */
1097                                         BUFFER_ADD = TAP_MOVE(cur_state, end_state);
1098                                         cur_state = end_state;
1099                                         //DEBUG("added TMS scan (no read)");
1100                                 }
1101                                 require_send = 1;
1102 #ifdef _DEBUG_JTAG_IO_
1103                                 DEBUG("runtest: %i, end in %i", cmd->cmd.runtest->num_cycles, end_state);
1104 #endif
1105                                 break;
1106                         case JTAG_STATEMOVE:
1107                                 /* only send the maximum buffer size that FT2232C can handle */
1108                                 predicted_size = 3;
1109                                 if (ft2232_buffer_size + predicted_size + 1 > FT2232_BUFFER_SIZE)
1110                                 {
1111                                         ft2232_send_and_recv(first_unsent, cmd);
1112                                         require_send = 0;
1113                                         first_unsent = cmd;
1114                                 }
1115                                 if (cmd->cmd.statemove->end_state != -1)
1116                                         ft2232_end_state(cmd->cmd.statemove->end_state);
1117                                 /* command "Clock Data to TMS/CS Pin (no Read)" */
1118                                 BUFFER_ADD = 0x4b;
1119                                 /* scan 7 bit */
1120                                 BUFFER_ADD = 0x6;
1121                                 /* TMS data bits */
1122                                 BUFFER_ADD = TAP_MOVE(cur_state, end_state);
1123                                 //DEBUG("added TMS scan (no read)");
1124                                 cur_state = end_state;
1125                                 require_send = 1;
1126 #ifdef _DEBUG_JTAG_IO_
1127                                 DEBUG("statemove: %i", end_state);
1128 #endif
1129                                 break;
1130                         case JTAG_PATHMOVE:
1131                                 /* only send the maximum buffer size that FT2232C can handle */
1132                                 predicted_size = 3 * CEIL(cmd->cmd.pathmove->num_states, 7);
1133                                 if (ft2232_buffer_size + predicted_size + 1 > FT2232_BUFFER_SIZE)
1134                                 {
1135                                         ft2232_send_and_recv(first_unsent, cmd);
1136                                         require_send = 0;
1137                                         first_unsent = cmd;
1138                                 }
1139                                 ft2232_add_pathmove(cmd->cmd.pathmove);
1140                                 require_send = 1;
1141 #ifdef _DEBUG_JTAG_IO_
1142                                 DEBUG("pathmove: %i states, end in %i", cmd->cmd.pathmove->num_states, cmd->cmd.pathmove->path[cmd->cmd.pathmove->num_states - 1]);
1143 #endif
1144                                 break;
1145                         case JTAG_SCAN:
1146                                 scan_size = jtag_build_buffer(cmd->cmd.scan, &buffer);
1147                                 type = jtag_scan_type(cmd->cmd.scan);
1148                                 predicted_size = ft2232_predict_scan_out(scan_size, type);
1149                                 if ((predicted_size + 1) > FT2232_BUFFER_SIZE)
1150                                 {
1151                                         DEBUG("oversized ft2232 scan (predicted_size > FT2232_BUFFER_SIZE)");
1152                                         /* unsent commands before this */
1153                                         if (first_unsent != cmd)
1154                                                 ft2232_send_and_recv(first_unsent, cmd);
1155
1156                                         /* current command */
1157                                         if (cmd->cmd.scan->end_state != -1)
1158                                                 ft2232_end_state(cmd->cmd.scan->end_state);
1159                                         ft2232_large_scan(cmd->cmd.scan, type, buffer, scan_size);
1160                                         require_send = 0;
1161                                         first_unsent = cmd->next;
1162                                         if (buffer)
1163                                                 free(buffer);
1164                                         break;
1165                                 }
1166                                 else if (ft2232_buffer_size + predicted_size + 1 > FT2232_BUFFER_SIZE)
1167                                 {
1168                                         DEBUG("ft2232 buffer size reached, sending queued commands (first_unsent: %x, cmd: %x)", first_unsent, cmd);
1169                                         ft2232_send_and_recv(first_unsent, cmd);
1170                                         require_send = 0;
1171                                         first_unsent = cmd;
1172                                 }
1173                                 ft2232_expect_read += ft2232_predict_scan_in(scan_size, type);
1174                                 //DEBUG("new read size: %i", ft2232_expect_read);
1175                                 if (cmd->cmd.scan->end_state != -1)
1176                                         ft2232_end_state(cmd->cmd.scan->end_state);
1177                                 ft2232_add_scan(cmd->cmd.scan->ir_scan, type, buffer, scan_size);
1178                                 require_send = 1;
1179                                 if (buffer)
1180                                         free(buffer);
1181 #ifdef _DEBUG_JTAG_IO_
1182                                 DEBUG("%s scan, %i bit, end in %i", (cmd->cmd.scan->ir_scan) ? "IR" : "DR", scan_size, end_state);
1183 #endif
1184                                 break;
1185                         case JTAG_SLEEP:
1186                                 ft2232_send_and_recv(first_unsent, cmd);
1187                                 first_unsent = cmd->next;
1188                                 jtag_sleep(cmd->cmd.sleep->us);
1189 #ifdef _DEBUG_JTAG_IO_
1190                                 DEBUG("sleep %i usec", cmd->cmd.sleep->us);
1191 #endif
1192                                 break;
1193                         default:
1194                                 ERROR("BUG: unknown JTAG command type encountered");
1195                                 exit(-1);
1196                 }
1197                 cmd = cmd->next;
1198         }
1199
1200         if (require_send > 0)
1201                 ft2232_send_and_recv(first_unsent, cmd);
1202
1203         return ERROR_OK;
1204 }
1205
1206 int ft2232_init(void)
1207 {
1208         u8 latency_timer;
1209         u8 buf[1];
1210         int retval;
1211         u32 bytes_written;
1212
1213 #if BUILD_FT2232_FTD2XX == 1
1214         FT_STATUS status;
1215         DWORD openex_flags = 0;
1216         char *openex_string = NULL;
1217 #endif
1218
1219         ft2232_layout_t *cur_layout = ft2232_layouts;
1220
1221         if ((ft2232_layout == NULL) || (ft2232_layout[0] == 0))
1222         {
1223                 ft2232_layout = "usbjtag";
1224                 WARNING("No ft2232 layout specified, using default 'usbjtag'");
1225         }
1226
1227         while (cur_layout->name)
1228         {
1229                 if (strcmp(cur_layout->name, ft2232_layout) == 0)
1230                 {
1231                         layout = cur_layout;
1232                         break;
1233                 }
1234                 cur_layout++;
1235         }
1236
1237         if (!layout)
1238         {
1239                 ERROR("No matching layout found for %s", ft2232_layout);
1240                 return ERROR_JTAG_INIT_FAILED;
1241         }
1242
1243 #if BUILD_FT2232_FTD2XX == 1
1244         DEBUG("'ft2232' interface using FTD2XX with '%s' layout", ft2232_layout);
1245 #elif BUILD_FT2232_LIBFTDI == 1
1246         DEBUG("'ft2232' interface using libftdi with '%s' layout", ft2232_layout);
1247 #endif
1248
1249 #if BUILD_FT2232_FTD2XX == 1
1250 #if IS_WIN32 == 0
1251         /* Add non-standard Vid/Pid to the linux driver */
1252         if ((status = FT_SetVIDPID(ft2232_vid, ft2232_pid)) != FT_OK)
1253         {
1254                 WARNING("couldn't add %4.4x:%4.4x", ft2232_vid, ft2232_pid);
1255         }
1256 #endif
1257
1258         if (ft2232_device_desc && ft2232_serial)
1259         {
1260                 WARNING("can't open by device description and serial number, giving precedence to serial");
1261                 ft2232_device_desc = NULL;
1262         }
1263
1264         if (ft2232_device_desc)
1265         {
1266                 openex_string = ft2232_device_desc;
1267                 openex_flags = FT_OPEN_BY_DESCRIPTION;
1268         }
1269         else if (ft2232_serial)
1270         {
1271                 openex_string = ft2232_serial;
1272                 openex_flags = FT_OPEN_BY_SERIAL_NUMBER;
1273         }
1274         else
1275         {
1276                 ERROR("neither device description nor serial number specified");
1277                 ERROR("please add \"ft2232_device_desc <string>\" or \"ft2232_serial <string>\" to your .cfg file");
1278
1279                 return ERROR_JTAG_INIT_FAILED;
1280         }
1281
1282         if ((status = FT_OpenEx(openex_string, openex_flags, &ftdih)) != FT_OK)
1283         {
1284                 DWORD num_devices;
1285
1286                 ERROR("unable to open ftdi device: %i", status);
1287                 status = FT_ListDevices(&num_devices, NULL, FT_LIST_NUMBER_ONLY);
1288                 if (status == FT_OK)
1289                 {
1290                         char **desc_array = malloc(sizeof(char*) * (num_devices + 1));
1291                         int i;
1292
1293                         for (i = 0; i < num_devices; i++)
1294                                 desc_array[i] = malloc(64);
1295                         desc_array[num_devices] = NULL;
1296
1297                         status = FT_ListDevices(desc_array, &num_devices, FT_LIST_ALL | openex_flags);
1298
1299                         if (status == FT_OK)
1300                         {
1301                                 ERROR("ListDevices: %d\n", num_devices);
1302                                 for (i = 0; i < num_devices; i++)
1303                                         ERROR("%i: %s", i, desc_array[i]);
1304                         }
1305
1306                         for (i = 0; i < num_devices; i++)
1307                                 free(desc_array[i]);
1308                         free(desc_array);
1309                 }
1310                 else
1311                 {
1312                         printf("ListDevices: NONE\n");
1313                 }
1314                 return ERROR_JTAG_INIT_FAILED;
1315         }
1316
1317         if ((status = FT_SetLatencyTimer(ftdih, 2)) != FT_OK)
1318         {
1319                 ERROR("unable to set latency timer: %i", status);
1320                 return ERROR_JTAG_INIT_FAILED;
1321         }
1322
1323         if ((status = FT_GetLatencyTimer(ftdih, &latency_timer)) != FT_OK)
1324         {
1325                 ERROR("unable to get latency timer: %i", status);
1326                 return ERROR_JTAG_INIT_FAILED;
1327         }
1328         else
1329         {
1330                 DEBUG("current latency timer: %i", latency_timer);
1331         }
1332
1333         if ((status = FT_SetTimeouts(ftdih, 5000, 5000)) != FT_OK)
1334         {
1335                 ERROR("unable to set timeouts: %i", status);
1336                 return ERROR_JTAG_INIT_FAILED;
1337         }
1338
1339         if ((status = FT_SetBitMode(ftdih, 0x0b, 2)) != FT_OK)
1340         {
1341                 ERROR("unable to enable bit i/o mode: %i", status);
1342                 return ERROR_JTAG_INIT_FAILED;
1343         }
1344 #elif BUILD_FT2232_LIBFTDI == 1
1345         if (ftdi_init(&ftdic) < 0)
1346                 return ERROR_JTAG_INIT_FAILED;
1347
1348         /* context, vendor id, product id */
1349         if (ftdi_usb_open(&ftdic, ft2232_vid, ft2232_pid) < 0)
1350         {
1351                 ERROR("unable to open ftdi device: %s", ftdic.error_str);
1352                 return ERROR_JTAG_INIT_FAILED;
1353         }
1354
1355         if (ftdi_usb_reset(&ftdic) < 0)
1356         {
1357                 ERROR("unable to reset ftdi device");
1358                 return ERROR_JTAG_INIT_FAILED;
1359         }
1360
1361         if (ftdi_set_latency_timer(&ftdic, 2) < 0)
1362         {
1363                 ERROR("unable to set latency timer");
1364                 return ERROR_JTAG_INIT_FAILED;
1365         }
1366
1367         if (ftdi_get_latency_timer(&ftdic, &latency_timer) < 0)
1368         {
1369                 ERROR("unable to get latency timer");
1370                 return ERROR_JTAG_INIT_FAILED;
1371         }
1372         else
1373         {
1374                 DEBUG("current latency timer: %i", latency_timer);
1375         }
1376
1377         ftdic.bitbang_mode = 0; /* Reset controller */
1378         ftdi_enable_bitbang(&ftdic, 0x0b); /* ctx, JTAG I/O mask */
1379
1380         ftdic.bitbang_mode = 2; /* MPSSE mode */
1381         ftdi_enable_bitbang(&ftdic, 0x0b); /* ctx, JTAG I/O mask */
1382 #endif
1383
1384         ft2232_buffer_size = 0;
1385         ft2232_buffer = malloc(FT2232_BUFFER_SIZE);
1386
1387         if (layout->init() != ERROR_OK)
1388                 return ERROR_JTAG_INIT_FAILED;
1389
1390         ft2232_speed(jtag_speed);
1391
1392         buf[0] = 0x85; /* Disconnect TDI/DO to TDO/DI for Loopback */
1393         if (((retval = ft2232_write(buf, 1, &bytes_written)) != ERROR_OK) || (bytes_written != 1))
1394         {
1395                 ERROR("couldn't write to FT2232 to disable loopback");
1396                 return ERROR_JTAG_INIT_FAILED;
1397         }
1398
1399 #if BUILD_FT2232_FTD2XX == 1
1400         if ((status = FT_Purge(ftdih, FT_PURGE_RX | FT_PURGE_TX)) != FT_OK)
1401         {
1402                 ERROR("error purging ftd2xx device: %i", status);
1403                 return ERROR_JTAG_INIT_FAILED;
1404         }
1405 #elif BUILD_FT2232_LIBFTDI == 1
1406         if (ftdi_usb_purge_buffers(&ftdic) < 0)
1407         {
1408                 ERROR("ftdi_purge_buffers: %s", ftdic.error_str);
1409                 return ERROR_JTAG_INIT_FAILED;
1410         }
1411 #endif
1412
1413         return ERROR_OK;
1414 }
1415
1416 int usbjtag_init(void)
1417 {
1418         u8 buf[3];
1419         u32 bytes_written;
1420
1421         low_output = 0x08;
1422         low_direction = 0x0b;
1423
1424         if (strcmp(ft2232_layout, "usbjtag") == 0)
1425         {
1426                 nTRST = 0x10;
1427                 nTRSTnOE = 0x10;
1428                 nSRST = 0x40;
1429                 nSRSTnOE = 0x40;
1430         }
1431         else if (strcmp(ft2232_layout, "signalyzer") == 0)
1432         {
1433                 nTRST = 0x10;
1434                 nTRSTnOE = 0x10;
1435                 nSRST = 0x20;
1436                 nSRSTnOE = 0x20;
1437         }
1438         else if (strcmp(ft2232_layout, "evb_lm3s811") == 0)
1439         {
1440                 nTRST = 0x0;
1441                 nTRSTnOE = 0x00;
1442                 nSRST = 0x20;
1443                 nSRSTnOE = 0x20;
1444                 low_output = 0x88;
1445                 low_direction = 0x8b;
1446         }
1447         else
1448         {
1449                 ERROR("BUG: usbjtag_init called for unknown layout '%s'", ft2232_layout);
1450                 return ERROR_JTAG_INIT_FAILED;
1451         }
1452
1453         if (jtag_reset_config & RESET_TRST_OPEN_DRAIN)
1454         {
1455                 low_direction &= ~nTRSTnOE; /* nTRST input */
1456                 low_output &= ~nTRST; /* nTRST = 0 */
1457         }
1458         else
1459         {
1460                 low_direction |= nTRSTnOE; /* nTRST output */
1461                 low_output |= nTRST; /* nTRST = 1 */
1462         }
1463
1464         if (jtag_reset_config & RESET_SRST_PUSH_PULL)
1465         {
1466                 low_direction |= nSRSTnOE; /* nSRST output */
1467                 low_output |= nSRST; /* nSRST = 1 */
1468         }
1469         else
1470         {
1471                 low_direction &= ~nSRSTnOE; /* nSRST input */
1472                 low_output &= ~nSRST; /* nSRST = 0 */
1473         }
1474
1475         /* initialize low byte for jtag */
1476         buf[0] = 0x80; /* command "set data bits low byte" */
1477         buf[1] = low_output; /* value (TMS=1,TCK=0, TDI=0, xRST high) */
1478         buf[2] = low_direction; /* dir (output=1), TCK/TDI/TMS=out, TDO=in */
1479         DEBUG("%2.2x %2.2x %2.2x", buf[0], buf[1], buf[2]);
1480
1481         if (((ft2232_write(buf, 3, &bytes_written)) != ERROR_OK) || (bytes_written != 3))
1482         {
1483                 ERROR("couldn't initialize FT2232 with 'USBJTAG' layout");
1484                 return ERROR_JTAG_INIT_FAILED;
1485         }
1486
1487         return ERROR_OK;
1488 }
1489
1490 int jtagkey_init(void)
1491 {
1492         u8 buf[3];
1493         u32 bytes_written;
1494
1495         low_output = 0x08;
1496         low_direction = 0x1b;
1497
1498         /* initialize low byte for jtag */
1499         buf[0] = 0x80; /* command "set data bits low byte" */
1500         buf[1] = low_output; /* value (TMS=1,TCK=0, TDI=0, nOE=0) */
1501         buf[2] = low_direction; /* dir (output=1), TCK/TDI/TMS=out, TDO=in, nOE=out */
1502         DEBUG("%2.2x %2.2x %2.2x", buf[0], buf[1], buf[2]);
1503
1504         if (((ft2232_write(buf, 3, &bytes_written)) != ERROR_OK) || (bytes_written != 3))
1505         {
1506                 ERROR("couldn't initialize FT2232 with 'JTAGkey' layout");
1507                 return ERROR_JTAG_INIT_FAILED;
1508         }
1509
1510         if (strcmp(layout->name, "jtagkey") == 0)
1511         {
1512                 nTRST = 0x01;
1513                 nTRSTnOE = 0x4;
1514                 nSRST = 0x02;
1515                 nSRSTnOE = 0x08;
1516         }
1517         else if ((strcmp(layout->name, "jtagkey_prototype_v1") == 0) ||
1518                 (strcmp(layout->name, "oocdlink") == 0))
1519         {
1520                 nTRST = 0x02;
1521                 nTRSTnOE = 0x1;
1522                 nSRST = 0x08;
1523                 nSRSTnOE = 0x04;
1524         }
1525         else
1526         {
1527                 ERROR("BUG: jtagkey_init called for non jtagkey layout");
1528                 exit(-1);
1529         }
1530
1531         high_output = 0x0;
1532         high_direction = 0x0f;
1533
1534         if (jtag_reset_config & RESET_TRST_OPEN_DRAIN)
1535         {
1536                 high_output |= nTRSTnOE;
1537                 high_output &= ~nTRST;
1538         }
1539         else
1540         {
1541                 high_output &= ~nTRSTnOE;
1542                 high_output |= nTRST;
1543         }
1544
1545         if (jtag_reset_config & RESET_SRST_PUSH_PULL)
1546         {
1547                 high_output &= ~nSRSTnOE;
1548                 high_output |= nSRST;
1549         }
1550         else
1551         {
1552                 high_output |= nSRSTnOE;
1553                 high_output &= ~nSRST;
1554         }
1555
1556         /* initialize high port */
1557         buf[0] = 0x82; /* command "set data bits high byte" */
1558         buf[1] = high_output; /* value */
1559         buf[2] = high_direction;   /* all outputs (xRST and xRSTnOE) */
1560         DEBUG("%2.2x %2.2x %2.2x", buf[0], buf[1], buf[2]);
1561
1562         if (((ft2232_write(buf, 3, &bytes_written)) != ERROR_OK) || (bytes_written != 3))
1563         {
1564                 ERROR("couldn't initialize FT2232 with 'JTAGkey' layout");
1565                 return ERROR_JTAG_INIT_FAILED;
1566         }
1567
1568         return ERROR_OK;
1569 }
1570
1571 int olimex_jtag_init(void)
1572 {
1573         u8 buf[3];
1574         u32 bytes_written;
1575
1576         low_output = 0x08;
1577         low_direction = 0x1b;
1578
1579         /* initialize low byte for jtag */
1580         buf[0] = 0x80; /* command "set data bits low byte" */
1581         buf[1] = low_output; /* value (TMS=1,TCK=0, TDI=0, nOE=0) */
1582         buf[2] = low_direction; /* dir (output=1), TCK/TDI/TMS=out, TDO=in, nOE=out */
1583         DEBUG("%2.2x %2.2x %2.2x", buf[0], buf[1], buf[2]);
1584
1585         if (((ft2232_write(buf, 3, &bytes_written)) != ERROR_OK) || (bytes_written != 3))
1586         {
1587                 ERROR("couldn't initialize FT2232 with 'JTAGkey' layout");
1588                 return ERROR_JTAG_INIT_FAILED;
1589         }
1590
1591         nTRST = 0x01;
1592         nTRSTnOE = 0x4;
1593         nSRST = 0x02;
1594         nSRSTnOE = 0x00; /* no output enable for nSRST */
1595
1596         high_output = 0x0;
1597         high_direction = 0x0f;
1598
1599         if (jtag_reset_config & RESET_TRST_OPEN_DRAIN)
1600         {
1601                 high_output |= nTRSTnOE;
1602                 high_output &= ~nTRST;
1603         }
1604         else
1605         {
1606                 high_output &= ~nTRSTnOE;
1607                 high_output |= nTRST;
1608         }
1609
1610         if (jtag_reset_config & RESET_SRST_PUSH_PULL)
1611         {
1612                 ERROR("can't set nSRST to push-pull on the Olimex ARM-USB-OCD");
1613         }
1614         else
1615         {
1616                 high_output &= ~nSRST;
1617         }
1618
1619         /* turn red LED on */
1620         high_output |= 0x08;
1621
1622         /* initialize high port */
1623         buf[0] = 0x82; /* command "set data bits high byte" */
1624         buf[1] = high_output; /* value */
1625         buf[2] = high_direction;   /* all outputs (xRST and xRSTnOE) */
1626         DEBUG("%2.2x %2.2x %2.2x", buf[0], buf[1], buf[2]);
1627
1628         if (((ft2232_write(buf, 3, &bytes_written)) != ERROR_OK) || (bytes_written != 3))
1629         {
1630                 ERROR("couldn't initialize FT2232 with 'JTAGkey' layout");
1631                 return ERROR_JTAG_INIT_FAILED;
1632         }
1633
1634         return ERROR_OK;
1635 }
1636
1637 int m5960_init(void)
1638 {
1639         u8 buf[3];
1640         u32 bytes_written;
1641
1642         low_output = 0x18;
1643         low_direction = 0xfb;
1644
1645         /* initialize low byte for jtag */
1646         buf[0] = 0x80; /* command "set data bits low byte" */
1647         buf[1] = low_output; /* value (TMS=1,TCK=0, TDI=0, nOE=0) */
1648         buf[2] = low_direction; /* dir (output=1), TCK/TDI/TMS=out, TDO=in, nOE[12]=out, n[ST]srst=out */
1649         DEBUG("%2.2x %2.2x %2.2x", buf[0], buf[1], buf[2]);
1650
1651         if (((ft2232_write(buf, 3, &bytes_written)) != ERROR_OK) || (bytes_written != 3))
1652         {
1653                 ERROR("couldn't initialize FT2232 with 'm5960' layout");
1654                 return ERROR_JTAG_INIT_FAILED;
1655         }
1656
1657         nTRST = 0x10;
1658         nTRSTnOE = 0x0; /* not output enable for nTRST */
1659         nSRST = 0x20;
1660         nSRSTnOE = 0x00; /* no output enable for nSRST */
1661
1662         high_output = 0x00;
1663         high_direction = 0x0c;
1664
1665         /* turn red LED1 on, LED2 off */
1666         high_output |= 0x08;
1667
1668         /* initialize high port */
1669         buf[0] = 0x82; /* command "set data bits high byte" */
1670         buf[1] = high_output; /* value */
1671         buf[2] = high_direction;   /* all outputs (xRST and xRSTnOE) */
1672         DEBUG("%2.2x %2.2x %2.2x", buf[0], buf[1], buf[2]);
1673
1674         if (((ft2232_write(buf, 3, &bytes_written)) != ERROR_OK) || (bytes_written != 3))
1675         {
1676                 ERROR("couldn't initialize FT2232 with 'm5960' layout");
1677                 return ERROR_JTAG_INIT_FAILED;
1678         }
1679
1680         return ERROR_OK;
1681 }
1682
1683 void olimex_jtag_blink(void)
1684 {
1685         /* Olimex ARM-USB-OCD has a LED connected to ACBUS3
1686          * ACBUS3 is bit 3 of the GPIOH port
1687          */
1688         if (high_output & 0x08)
1689         {
1690                 /* set port pin high */
1691                 high_output &= 0x07;
1692         }
1693         else
1694         {
1695                 /* set port pin low */
1696                 high_output |= 0x08;
1697         }
1698
1699         BUFFER_ADD = 0x82;
1700         BUFFER_ADD = high_output;
1701         BUFFER_ADD = high_direction;
1702 }
1703
1704 int ft2232_quit(void)
1705 {
1706 #if BUILD_FT2232_FTD2XX == 1
1707         FT_STATUS status;
1708
1709         status = FT_Close(ftdih);
1710 #elif BUILD_FT2232_LIBFTDI == 1
1711         ftdi_disable_bitbang(&ftdic);
1712
1713         ftdi_usb_close(&ftdic);
1714
1715         ftdi_deinit(&ftdic);
1716 #endif
1717
1718         free(ft2232_buffer);
1719
1720         return ERROR_OK;
1721 }
1722
1723 int ft2232_handle_device_desc_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1724 {
1725         if (argc == 1)
1726         {
1727                 ft2232_device_desc = strdup(args[0]);
1728         }
1729         else
1730         {
1731                 ERROR("expected exactly one argument to ft2232_device_desc <description>");
1732         }
1733
1734         return ERROR_OK;
1735 }
1736
1737 int ft2232_handle_serial_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1738 {
1739         if (argc == 1)
1740         {
1741                 ft2232_serial = strdup(args[0]);
1742         }
1743         else
1744         {
1745                 ERROR("expected exactly one argument to ft2232_serial <serial-number>");
1746         }
1747
1748         return ERROR_OK;
1749 }
1750
1751 int ft2232_handle_layout_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1752 {
1753         if (argc == 0)
1754                 return ERROR_OK;
1755
1756         ft2232_layout = malloc(strlen(args[0]) + 1);
1757         strcpy(ft2232_layout, args[0]);
1758
1759         return ERROR_OK;
1760 }
1761
1762 int ft2232_handle_vid_pid_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1763 {
1764         if (argc >= 2)
1765         {
1766                 ft2232_vid = strtol(args[0], NULL, 0);
1767                 ft2232_pid = strtol(args[1], NULL, 0);
1768         }
1769         else
1770         {
1771                 WARNING("incomplete ft2232_vid_pid configuration directive");
1772         }
1773
1774         return ERROR_OK;
1775 }