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 0
  56 #define _DEBUG_USB_IO_
  57 #endif
  58
  59 /* enable this to debug communication
  60  */
  61 #if 0
  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         if (num_bytes > 1)
 495         {
 496                 if (type == SCAN_IO)
 497                 {
 498                         /* Clock Data Bytes In and Out LSB First */
 499                         BUFFER_ADD = 0x39;
 500                         //DEBUG("added TDI bytes (io %i)", num_bytes);
 501                 }
 502                 else if (type == SCAN_OUT)
 503                 {
 504                         /* Clock Data Bytes Out on -ve Clock Edge LSB First (no Read) */
 505                         BUFFER_ADD = 0x19;
 506                         //DEBUG("added TDI bytes (o)");
 507                 }
 508                 else if (type == SCAN_IN)
 509                 {
 510                         /* Clock Data Bytes In on +ve Clock Edge LSB First (no Write) */
 511                         BUFFER_ADD = 0x28;
 512                         //DEBUG("added TDI bytes (i %i)", num_bytes);
 513                 }
 514                 BUFFER_ADD = (num_bytes-2) & 0xff;
 515                 BUFFER_ADD = ((num_bytes-2) >> 8) & 0xff;
 516         }
 517         if (type != SCAN_IN)
 518         {
 519                 /* add complete bytes */
 520                 while(num_bytes-- > 1)
 521                 {
 522                         BUFFER_ADD = buffer[cur_byte];
 523                         cur_byte++;
 524                         bits_left -= 8;
 525                 }
 526         }
 527         if (type == SCAN_IN)
 528         {
 529                 bits_left -= 8 * (num_bytes - 1);
 530         }
 531
 532         /* the most signifcant bit is scanned during TAP movement */
 533         if (type != SCAN_IN)
 534                 last_bit = (buffer[cur_byte] >> (bits_left - 1)) & 0x1;
 535         else
 536                 last_bit = 0;
 537
 538         /* process remaining bits but the last one */
 539         if (bits_left > 1)
 540         {
 541                 if (type == SCAN_IO)
 542                 {
 543                         /* Clock Data Bits In and Out LSB First */
 544                         BUFFER_ADD = 0x3b;
 545                         //DEBUG("added TDI bits (io) %i", bits_left - 1);
 546                 }
 547                 else if (type == SCAN_OUT)
 548                 {
 549                         /* Clock Data Bits Out on -ve Clock Edge LSB First (no Read) */
 550                         BUFFER_ADD = 0x1b;
 551                         //DEBUG("added TDI bits (o)");
 552                 }
 553                 else if (type == SCAN_IN)
 554                 {
 555                         /* Clock Data Bits In on +ve Clock Edge LSB First (no Write) */
 556                         BUFFER_ADD = 0x2a;
 557                         //DEBUG("added TDI bits (i %i)", bits_left - 1);
 558                 }
 559                 BUFFER_ADD = bits_left - 2;
 560                 if (type != SCAN_IN)
 561                         BUFFER_ADD = buffer[cur_byte];
 562         }
 563
 564         /* move from Shift-IR/DR to end state */
 565         if (type != SCAN_OUT)
 566         {
 567                 /* Clock Data to TMS/CS Pin with Read */
 568                 BUFFER_ADD = 0x6b;
 569                 //DEBUG("added TMS scan (read)");
 570         }
 571         else
 572         {
 573                 /* Clock Data to TMS/CS Pin (no Read) */
 574                 BUFFER_ADD = 0x4b;
 575                 //DEBUG("added TMS scan (no read)");
 576         }
 577         BUFFER_ADD = 0x6;
 578         BUFFER_ADD = TAP_MOVE(cur_state, end_state) | (last_bit << 7);
 579         cur_state = end_state;
 580
 581 }
 582
 583 int ft2232_predict_scan_out(int scan_size, enum scan_type type)
 584 {
 585         int predicted_size = 3;
 586
 587         if (cur_state != TAP_SD)
 588                 predicted_size += 3;
 589
 590         if (type == SCAN_IN)    /* only from device to host */
 591         {
 592                 /* complete bytes */
 593                 predicted_size += (CEIL(scan_size, 8) > 1) ? 3 : 0;
 594                 /* remaining bits - 1 (up to 7) */
 595                 predicted_size += ((scan_size - 1) % 8) ? 2 : 0;
 596         }
 597         else                                    /* host to device, or bidirectional */
 598         {
 599                 /* complete bytes */
 600                 predicted_size += (CEIL(scan_size, 8) > 1) ? (CEIL(scan_size, 8) + 3 - 1) : 0;
 601                 /* remaining bits -1 (up to 7) */
 602                 predicted_size += ((scan_size - 1) % 8) ? 3 : 0;
 603         }
 604
 605         return predicted_size;
 606 }
 607
 608 int ft2232_predict_scan_in(int scan_size, enum scan_type type)
 609 {
 610         int predicted_size = 0;
 611
 612         if (type != SCAN_OUT)
 613         {
 614                 /* complete bytes */
 615                 predicted_size += (CEIL(scan_size, 8) > 1) ? (CEIL(scan_size, 8) - 1) : 0;
 616                 /* remaining bits - 1 */
 617                 predicted_size += ((scan_size - 1) % 8) ? 1 : 0;
 618                 /* last bit (from TMS scan) */
 619                 predicted_size += 1;
 620         }
 621
 622         //DEBUG("scan_size: %i, predicted_size: %i", scan_size, predicted_size);
 623
 624         return predicted_size;
 625 }
 626
 627 void usbjtag_reset(int trst, int srst)
 628 {
 629         if (trst == 1)
 630         {
 631                 cur_state = TAP_TLR;
 632                 if (jtag_reset_config & RESET_TRST_OPEN_DRAIN)
 633                         low_direction |= nTRSTnOE;      /* switch to output pin (output is low) */
 634                 else
 635                         low_output &= ~nTRST;   /* switch output low */
 636         }
 637         else if (trst == 0)
 638         {
 639                 if (jtag_reset_config & RESET_TRST_OPEN_DRAIN)
 640                         low_direction &= ~nTRSTnOE; /* switch to input pin (high-Z + internal and external pullup) */
 641                 else
 642                         low_output |= nTRST; /* switch output high */
 643         }
 644
 645         if (srst == 1)
 646         {
 647                 if (jtag_reset_config & RESET_SRST_PUSH_PULL)
 648                         low_output &= ~nSRST;   /* switch output low */
 649                 else
 650                         low_direction |= nSRSTnOE;      /* switch to output pin (output is low) */
 651         }
 652         else if (srst == 0)
 653         {
 654                 if (jtag_reset_config & RESET_SRST_PUSH_PULL)
 655                         low_output |= nSRST;    /* switch output high */
 656                 else
 657                         low_direction &= ~nSRSTnOE;     /* switch to input pin (high-Z) */
 658         }
 659
 660         /* command "set data bits low byte" */
 661         BUFFER_ADD = 0x80;
 662         BUFFER_ADD = low_output;
 663         BUFFER_ADD = low_direction;
 664
 665 }
 666
 667 void jtagkey_reset(int trst, int srst)
 668 {
 669         if (trst == 1)
 670         {
 671                 cur_state = TAP_TLR;
 672                 if (jtag_reset_config & RESET_TRST_OPEN_DRAIN)
 673                         high_output &= ~nTRSTnOE;
 674                 else
 675                         high_output &= ~nTRST;
 676         }
 677         else if (trst == 0)
 678         {
 679                 if (jtag_reset_config & RESET_TRST_OPEN_DRAIN)
 680                         high_output |= nTRSTnOE;
 681                 else
 682                         high_output |= nTRST;
 683         }
 684
 685         if (srst == 1)
 686         {
 687                 if (jtag_reset_config & RESET_SRST_PUSH_PULL)
 688                         high_output &= ~nSRST;
 689                 else
 690                         high_output &= ~nSRSTnOE;
 691         }
 692         else if (srst == 0)
 693         {
 694                 if (jtag_reset_config & RESET_SRST_PUSH_PULL)
 695                         high_output |= nSRST;
 696                 else
 697                         high_output |= nSRSTnOE;
 698         }
 699
 700         /* command "set data bits high byte" */
 701         BUFFER_ADD = 0x82;
 702         BUFFER_ADD = high_output;
 703         BUFFER_ADD = high_direction;
 704         DEBUG("trst: %i, srst: %i, high_output: 0x%2.2x, high_direction: 0x%2.2x", trst, srst, high_output, high_direction);
 705 }
 706
 707 void olimex_jtag_reset(int trst, int srst)
 708 {
 709         if (trst == 1)
 710         {
 711                 cur_state = TAP_TLR;
 712                 if (jtag_reset_config & RESET_TRST_OPEN_DRAIN)
 713                         high_output &= ~nTRSTnOE;
 714                 else
 715                         high_output &= ~nTRST;
 716         }
 717         else if (trst == 0)
 718         {
 719                 if (jtag_reset_config & RESET_TRST_OPEN_DRAIN)
 720                         high_output |= nTRSTnOE;
 721                 else
 722                         high_output |= nTRST;
 723         }
 724
 725     if (srst == 1)
 726     {
 727         high_output |= nSRST;
 728     }
 729     else if (srst == 0)
 730     {
 731         high_output &= ~nSRST;
 732     }
 733
 734     /* command "set data bits high byte" */
 735     BUFFER_ADD = 0x82;
 736     BUFFER_ADD = high_output;
 737     BUFFER_ADD = high_direction;
 738     DEBUG("trst: %i, srst: %i, high_output: 0x%2.2x, high_direction: 0x%2.2x", trst, srst, high_output, high_direction);
 739 }
 740
 741 void m5960_reset(int trst, int srst)
 742 {
 743         if (trst == 1)
 744         {
 745                 cur_state = TAP_TLR;
 746                 low_output &= ~nTRST;
 747         }
 748         else if (trst == 0)
 749         {
 750                 low_output |= nTRST;
 751         }
 752
 753     if (srst == 1)
 754     {
 755         low_output |= nSRST;
 756     }
 757     else if (srst == 0)
 758     {
 759         low_output &= ~nSRST;
 760     }
 761
 762     /* command "set data bits low byte" */
 763     BUFFER_ADD = 0x80;
 764     BUFFER_ADD = low_output;
 765     BUFFER_ADD = low_direction;
 766     DEBUG("trst: %i, srst: %i, high_output: 0x%2.2x, high_direction: 0x%2.2x", trst, srst, high_output, high_direction);
 767 }
 768
 769 int ft2232_execute_queue()
 770 {
 771         jtag_command_t *cmd = jtag_command_queue; /* currently processed command */
 772         jtag_command_t *first_unsent = cmd;     /* next command that has to be sent */
 773         u8 *buffer;
 774         int scan_size;  /* size of IR or DR scan */
 775         enum scan_type type;
 776         int i;
 777         int predicted_size = 0;
 778         int require_send = 0;
 779
 780         ft2232_buffer_size = 0;
 781         ft2232_expect_read = 0;
 782
 783         /* blink, if the current layout has that feature */
 784         if (layout->blink)
 785                 layout->blink();
 786
 787         while (cmd)
 788         {
 789                 switch(cmd->type)
 790                 {
 791                         case JTAG_END_STATE:
 792                                 if (cmd->cmd.end_state->end_state != -1)
 793                                         ft2232_end_state(cmd->cmd.end_state->end_state);
 794                                 break;
 795                         case JTAG_RESET:
 796                                 /* only send the maximum buffer size that FT2232C can handle */
 797                                 predicted_size = 3;
 798                                 if (ft2232_buffer_size + predicted_size + 1 > FT2232_BUFFER_SIZE)
 799                                 {
 800                                         ft2232_send_and_recv(first_unsent, cmd);
 801                                         require_send = 0;
 802                                         first_unsent = cmd;
 803                                 }
 804
 805                                 layout->reset(cmd->cmd.reset->trst, cmd->cmd.reset->srst);
 806                                 require_send = 1;
 807
 808 #ifdef _DEBUG_JTAG_IO_
 809                                 DEBUG("trst: %i, srst: %i", cmd->cmd.reset->trst, cmd->cmd.reset->srst);
 810 #endif
 811                                 break;
 812                         case JTAG_RUNTEST:
 813                                 /* only send the maximum buffer size that FT2232C can handle */
 814                                 predicted_size = 0;
 815                                 if (cur_state != TAP_RTI)
 816                                         predicted_size += 3;
 817                                 predicted_size += 3 * CEIL(cmd->cmd.runtest->num_cycles, 7);
 818                                 if ((cmd->cmd.runtest->end_state != -1) && (cmd->cmd.runtest->end_state != TAP_RTI))
 819                                         predicted_size += 3;
 820                                 if ((cmd->cmd.runtest->end_state == -1) && (end_state != TAP_RTI))
 821                                         predicted_size += 3;
 822                                 if (ft2232_buffer_size + predicted_size + 1 > FT2232_BUFFER_SIZE)
 823                                 {
 824                                         ft2232_send_and_recv(first_unsent, cmd);
 825                                         require_send = 0;
 826                                         first_unsent = cmd;
 827                                 }
 828                                 if (cur_state != TAP_RTI)
 829                                 {
 830                                         /* command "Clock Data to TMS/CS Pin (no Read)" */
 831                                         BUFFER_ADD = 0x4b;
 832                                         /* scan 7 bit */
 833                                         BUFFER_ADD = 0x6;
 834                                         /* TMS data bits */
 835                                         BUFFER_ADD = TAP_MOVE(cur_state, TAP_RTI);
 836                                         cur_state = TAP_RTI;
 837                                         require_send = 1;
 838                                 }
 839                                 i = cmd->cmd.runtest->num_cycles;
 840                                 while (i > 0)
 841                                 {
 842                                         /* command "Clock Data to TMS/CS Pin (no Read)" */
 843                                         BUFFER_ADD = 0x4b;
 844                                         /* scan 7 bit */
 845                                         BUFFER_ADD = (i > 7) ? 6 : (i - 1);
 846                                         /* TMS data bits */
 847                                         BUFFER_ADD = 0x0;
 848                                         cur_state = TAP_RTI;
 849                                         i -= (i > 7) ? 7 : i;
 850                                         //DEBUG("added TMS scan (no read)");
 851                                 }
 852                                 if (cmd->cmd.runtest->end_state != -1)
 853                                         ft2232_end_state(cmd->cmd.runtest->end_state);
 854                                 if (cur_state != end_state)
 855                                 {
 856                                         /* command "Clock Data to TMS/CS Pin (no Read)" */
 857                                         BUFFER_ADD = 0x4b;
 858                                         /* scan 7 bit */
 859                                         BUFFER_ADD = 0x6;
 860                                         /* TMS data bits */
 861                                         BUFFER_ADD = TAP_MOVE(cur_state, end_state);
 862                                         cur_state = end_state;
 863                                         //DEBUG("added TMS scan (no read)");
 864                                 }
 865                                 require_send = 1;
 866 #ifdef _DEBUG_JTAG_IO_
 867                                 DEBUG("runtest: %i, end in %i", cmd->cmd.runtest->num_cycles, end_state);
 868 #endif
 869                                 break;
 870                         case JTAG_STATEMOVE:
 871                                 /* only send the maximum buffer size that FT2232C can handle */
 872                                 predicted_size = 3;
 873                                 if (ft2232_buffer_size + predicted_size + 1 > FT2232_BUFFER_SIZE)
 874                                 {
 875                                         ft2232_send_and_recv(first_unsent, cmd);
 876                                         require_send = 0;
 877                                         first_unsent = cmd;
 878                                 }
 879                                 if (cmd->cmd.statemove->end_state != -1)
 880                                         ft2232_end_state(cmd->cmd.statemove->end_state);
 881                                 /* command "Clock Data to TMS/CS Pin (no Read)" */
 882                                 BUFFER_ADD = 0x4b;
 883                                 /* scan 7 bit */
 884                                 BUFFER_ADD = 0x6;
 885                                 /* TMS data bits */
 886                                 BUFFER_ADD = TAP_MOVE(cur_state, end_state);
 887                                 //DEBUG("added TMS scan (no read)");
 888                                 cur_state = end_state;
 889                                 require_send = 1;
 890 #ifdef _DEBUG_JTAG_IO_
 891                                 DEBUG("statemove: %i", end_state);
 892 #endif
 893                                 break;
 894                         case JTAG_PATHMOVE:
 895                                 /* only send the maximum buffer size that FT2232C can handle */
 896                                 predicted_size = 3 * CEIL(cmd->cmd.pathmove->num_states, 7);
 897                                 if (ft2232_buffer_size + predicted_size + 1 > FT2232_BUFFER_SIZE)
 898                                 {
 899                                         ft2232_send_and_recv(first_unsent, cmd);
 900                                         require_send = 0;
 901                                         first_unsent = cmd;
 902                                 }
 903                                 ft2232_add_pathmove(cmd->cmd.pathmove);
 904                                 require_send = 1;
 905 #ifdef _DEBUG_JTAG_IO_
 906                                 DEBUG("pathmove: %i states, end in %i", cmd->cmd.pathmove->num_states, cmd->cmd.pathmove->path[cmd->cmd.pathmove->num_states - 1]);
 907 #endif
 908                                 break;
 909                         case JTAG_SCAN:
 910                                 scan_size = jtag_build_buffer(cmd->cmd.scan, &buffer);
 911                                 type = jtag_scan_type(cmd->cmd.scan);
 912                                 predicted_size = ft2232_predict_scan_out(scan_size, type);
 913                                 if (ft2232_buffer_size + predicted_size + 1 > FT2232_BUFFER_SIZE)
 914                                 {
 915                                         DEBUG("ftd2xx buffer size reached, sending queued commands (first_unsent: %x, cmd: %x)", first_unsent, cmd);
 916                                         ft2232_send_and_recv(first_unsent, cmd);
 917                                         require_send = 0;
 918                                         first_unsent = cmd;
 919                                 }
 920                                 ft2232_expect_read += ft2232_predict_scan_in(scan_size, type);
 921                                 //DEBUG("new read size: %i", ft2232_expect_read);
 922                                 if (cmd->cmd.scan->end_state != -1)
 923                                         ft2232_end_state(cmd->cmd.scan->end_state);
 924                                 ft2232_add_scan(cmd->cmd.scan->ir_scan, type, buffer, scan_size);
 925                                 require_send = 1;
 926                                 if (buffer)
 927                                         free(buffer);
 928 #ifdef _DEBUG_JTAG_IO_
 929                                 DEBUG("%s scan, %i bit, end in %i", (cmd->cmd.scan->ir_scan) ? "IR" : "DR", scan_size, end_state);
 930 #endif
 931                                 break;
 932                         case JTAG_SLEEP:
 933                                 ft2232_send_and_recv(first_unsent, cmd);
 934                                 first_unsent = cmd->next;
 935                                 jtag_sleep(cmd->cmd.sleep->us);
 936 #ifdef _DEBUG_JTAG_IO_
 937                                 DEBUG("sleep %i usec", cmd->cmd.sleep->us);
 938 #endif
 939                                 break;
 940                         default:
 941                                 ERROR("BUG: unknown JTAG command type encountered");
 942                                 exit(-1);
 943                 }
 944                 cmd = cmd->next;
 945         }
 946
 947         if (require_send > 0)
 948                 ft2232_send_and_recv(first_unsent, cmd);
 949
 950         return ERROR_OK;
 951 }
 952
 953 int ft2232_init(void)
 954 {
 955         u8 latency_timer;
 956         u8 buf[1];
 957         int retval;
 958         u32 bytes_written;
 959
 960 #if BUILD_FT2232_FTD2XX == 1
 961         FT_STATUS status;
 962         DWORD openex_flags = 0;
 963         char *openex_string = NULL;
 964 #endif
 965
 966         ft2232_layout_t *cur_layout = ft2232_layouts;
 967
 968         if ((ft2232_layout == NULL) || (ft2232_layout[0] == 0))
 969         {
 970                 ft2232_layout = "usbjtag";
 971                 WARNING("No ft2232 layout specified, using default 'usbjtag'");
 972         }
 973
 974         while (cur_layout->name)
 975         {
 976                 if (strcmp(cur_layout->name, ft2232_layout) == 0)
 977                 {
 978                         layout = cur_layout;
 979                         break;
 980                 }
 981                 cur_layout++;
 982         }
 983
 984         if (!layout)
 985         {
 986                 ERROR("No matching layout found for %s", ft2232_layout);
 987                 return ERROR_JTAG_INIT_FAILED;
 988         }
 989
 990 #if BUILD_FT2232_FTD2XX == 1
 991         DEBUG("'ft2232' interface using FTD2XX with '%s' layout", ft2232_layout);
 992 #elif BUILD_FT2232_LIBFTDI == 1
 993         DEBUG("'ft2232' interface using libftdi with '%s' layout", ft2232_layout);
 994 #endif
 995
 996 #if BUILD_FT2232_FTD2XX == 1
 997 #if IS_WIN32 == 0
 998         /* Add non-standard Vid/Pid to the linux driver */
 999         if ((status = FT_SetVIDPID(ft2232_vid, ft2232_pid)) != FT_OK)
1000         {
1001                 WARNING("couldn't add %4.4x:%4.4x", ft2232_vid, ft2232_pid);
1002         }
1003 #endif
1004
1005         if (ft2232_device_desc && ft2232_serial)
1006         {
1007                 WARNING("can't open by device description and serial number, giving precedence to serial");
1008                 ft2232_device_desc = NULL;
1009         }
1010
1011         if (ft2232_device_desc)
1012         {
1013                 openex_string = ft2232_device_desc;
1014                 openex_flags = FT_OPEN_BY_DESCRIPTION;
1015         }
1016         else if (ft2232_serial)
1017         {
1018                 openex_string = ft2232_serial;
1019                 openex_flags = FT_OPEN_BY_SERIAL_NUMBER;
1020         }
1021         else
1022         {
1023                 ERROR("neither device description nor serial number specified");
1024                 ERROR("please add \"ft2232_device_desc <string>\" or \"ft2232_serial <string>\" to your .cfg file");
1025
1026                 return ERROR_JTAG_INIT_FAILED;
1027         }
1028
1029         if ((status = FT_OpenEx(openex_string, openex_flags, &ftdih)) != FT_OK)
1030         {
1031                 DWORD num_devices;
1032
1033                 ERROR("unable to open ftdi device: %i", status);
1034                 status = FT_ListDevices(&num_devices, NULL, FT_LIST_NUMBER_ONLY);
1035                 if (status == FT_OK)
1036                 {
1037                         char **desc_array = malloc(sizeof(char*) * (num_devices + 1));
1038                         int i;
1039
1040                         for (i = 0; i < num_devices; i++)
1041                                 desc_array[i] = malloc(64);
1042                         desc_array[num_devices] = NULL;
1043
1044                         status = FT_ListDevices(desc_array, &num_devices, FT_LIST_ALL | openex_flags);
1045
1046                         if (status == FT_OK)
1047                         {
1048                                 ERROR("ListDevices: %d\n", num_devices);
1049                                 for (i = 0; i < num_devices; i++)
1050                                         ERROR("%i: %s", i, desc_array[i]);
1051                         }
1052
1053                         for (i = 0; i < num_devices; i++)
1054                                 free(desc_array[i]);
1055                         free(desc_array);
1056                 }
1057                 else
1058                 {
1059                         printf("ListDevices: NONE\n");
1060                 }
1061                 return ERROR_JTAG_INIT_FAILED;
1062         }
1063
1064         if ((status = FT_SetLatencyTimer(ftdih, 2)) != FT_OK)
1065         {
1066                 ERROR("unable to set latency timer: %i", status);
1067                 return ERROR_JTAG_INIT_FAILED;
1068         }
1069
1070         if ((status = FT_GetLatencyTimer(ftdih, &latency_timer)) != FT_OK)
1071         {
1072                 ERROR("unable to get latency timer: %i", status);
1073                 return ERROR_JTAG_INIT_FAILED;
1074         }
1075         else
1076         {
1077                 DEBUG("current latency timer: %i", latency_timer);
1078         }
1079
1080         if ((status = FT_SetTimeouts(ftdih, 5000, 5000)) != FT_OK)
1081         {
1082                 ERROR("unable to set timeouts: %i", status);
1083                 return ERROR_JTAG_INIT_FAILED;
1084         }
1085
1086         if ((status = FT_SetBitMode(ftdih, 0x0b, 2)) != FT_OK)
1087         {
1088                 ERROR("unable to enable bit i/o mode: %i", status);
1089                 return ERROR_JTAG_INIT_FAILED;
1090         }
1091 #elif BUILD_FT2232_LIBFTDI == 1
1092         if (ftdi_init(&ftdic) < 0)
1093                 return ERROR_JTAG_INIT_FAILED;
1094
1095         /* context, vendor id, product id */
1096         if (ftdi_usb_open(&ftdic, ft2232_vid, ft2232_pid) < 0)
1097         {
1098                 ERROR("unable to open ftdi device: %s", ftdic.error_str);
1099                 return ERROR_JTAG_INIT_FAILED;
1100         }
1101
1102         if (ftdi_usb_reset(&ftdic) < 0)
1103         {
1104                 ERROR("unable to reset ftdi device");
1105                 return ERROR_JTAG_INIT_FAILED;
1106         }
1107
1108         if (ftdi_set_latency_timer(&ftdic, 2) < 0)
1109         {
1110                 ERROR("unable to set latency timer");
1111                 return ERROR_JTAG_INIT_FAILED;
1112         }
1113
1114         if (ftdi_get_latency_timer(&ftdic, &latency_timer) < 0)
1115         {
1116                 ERROR("unable to get latency timer");
1117                 return ERROR_JTAG_INIT_FAILED;
1118         }
1119         else
1120         {
1121                 DEBUG("current latency timer: %i", latency_timer);
1122         }
1123
1124         ftdic.bitbang_mode = 0; /* Reset controller */
1125         ftdi_enable_bitbang(&ftdic, 0x0b); /* ctx, JTAG I/O mask */
1126
1127         ftdic.bitbang_mode = 2; /* MPSSE mode */
1128         ftdi_enable_bitbang(&ftdic, 0x0b); /* ctx, JTAG I/O mask */
1129 #endif
1130
1131         ft2232_buffer_size = 0;
1132         ft2232_buffer = malloc(FT2232_BUFFER_SIZE);
1133
1134         if (layout->init() != ERROR_OK)
1135                 return ERROR_JTAG_INIT_FAILED;
1136
1137         ft2232_speed(jtag_speed);
1138
1139         buf[0] = 0x85; /* Disconnect TDI/DO to TDO/DI for Loopback */
1140         if (((retval = ft2232_write(buf, 1, &bytes_written)) != ERROR_OK) || (bytes_written != 1))
1141         {
1142                 ERROR("couldn't write to FT2232 to disable loopback");
1143                 return ERROR_JTAG_INIT_FAILED;
1144         }
1145
1146 #if BUILD_FT2232_FTD2XX == 1
1147         if ((status = FT_Purge(ftdih, FT_PURGE_RX | FT_PURGE_TX)) != FT_OK)
1148         {
1149                 ERROR("error purging ftd2xx device: %i", status);
1150                 return ERROR_JTAG_INIT_FAILED;
1151         }
1152 #elif BUILD_FT2232_LIBFTDI == 1
1153         if (ftdi_usb_purge_buffers(&ftdic) < 0)
1154         {
1155                 ERROR("ftdi_purge_buffers: %s", ftdic.error_str);
1156                 return ERROR_JTAG_INIT_FAILED;
1157         }
1158 #endif
1159
1160         return ERROR_OK;
1161 }
1162
1163 int usbjtag_init(void)
1164 {
1165         u8 buf[3];
1166         u32 bytes_written;
1167
1168         low_output = 0x08;
1169         low_direction = 0x0b;
1170
1171         if (strcmp(ft2232_layout, "usbjtag") == 0)
1172         {
1173                 nTRST = 0x10;
1174                 nTRSTnOE = 0x10;
1175                 nSRST = 0x40;
1176                 nSRSTnOE = 0x40;
1177         }
1178         else if (strcmp(ft2232_layout, "signalyzer") == 0)
1179         {
1180                 nTRST = 0x10;
1181                 nTRSTnOE = 0x10;
1182                 nSRST = 0x20;
1183                 nSRSTnOE = 0x20;
1184         }
1185         else if (strcmp(ft2232_layout, "evb_lm3s811") == 0)
1186         {
1187                 nTRST = 0x0;
1188                 nTRSTnOE = 0x00;
1189                 nSRST = 0x20;
1190                 nSRSTnOE = 0x20;
1191                 low_output = 0x88;
1192                 low_direction = 0x8b;
1193         }
1194         else
1195         {
1196                 ERROR("BUG: usbjtag_init called for unknown layout '%s'", ft2232_layout);
1197                 return ERROR_JTAG_INIT_FAILED;
1198         }
1199
1200         if (jtag_reset_config & RESET_TRST_OPEN_DRAIN)
1201         {
1202                 low_direction &= ~nTRSTnOE; /* nTRST input */
1203                 low_output &= ~nTRST; /* nTRST = 0 */
1204         }
1205         else
1206         {
1207                 low_direction |= nTRSTnOE; /* nTRST output */
1208                 low_output |= nTRST; /* nTRST = 1 */
1209         }
1210
1211         if (jtag_reset_config & RESET_SRST_PUSH_PULL)
1212         {
1213                 low_direction |= nSRSTnOE; /* nSRST output */
1214                 low_output |= nSRST; /* nSRST = 1 */
1215         }
1216         else
1217         {
1218                 low_direction &= ~nSRSTnOE; /* nSRST input */
1219                 low_output &= ~nSRST; /* nSRST = 0 */
1220         }
1221
1222         /* initialize low byte for jtag */
1223         buf[0] = 0x80; /* command "set data bits low byte" */
1224         buf[1] = low_output; /* value (TMS=1,TCK=0, TDI=0, xRST high) */
1225         buf[2] = low_direction; /* dir (output=1), TCK/TDI/TMS=out, TDO=in */
1226         DEBUG("%2.2x %2.2x %2.2x", buf[0], buf[1], buf[2]);
1227
1228         if (((ft2232_write(buf, 3, &bytes_written)) != ERROR_OK) || (bytes_written != 3))
1229         {
1230                 ERROR("couldn't initialize FT2232 with 'USBJTAG' layout");
1231                 return ERROR_JTAG_INIT_FAILED;
1232         }
1233
1234         return ERROR_OK;
1235 }
1236
1237 int jtagkey_init(void)
1238 {
1239         u8 buf[3];
1240         u32 bytes_written;
1241
1242         low_output = 0x08;
1243         low_direction = 0x1b;
1244
1245         /* initialize low byte for jtag */
1246         buf[0] = 0x80; /* command "set data bits low byte" */
1247         buf[1] = low_output; /* value (TMS=1,TCK=0, TDI=0, nOE=0) */
1248         buf[2] = low_direction; /* dir (output=1), TCK/TDI/TMS=out, TDO=in, nOE=out */
1249         DEBUG("%2.2x %2.2x %2.2x", buf[0], buf[1], buf[2]);
1250
1251         if (((ft2232_write(buf, 3, &bytes_written)) != ERROR_OK) || (bytes_written != 3))
1252         {
1253                 ERROR("couldn't initialize FT2232 with 'JTAGkey' layout");
1254                 return ERROR_JTAG_INIT_FAILED;
1255         }
1256
1257         if (strcmp(layout->name, "jtagkey") == 0)
1258         {
1259                 nTRST = 0x01;
1260                 nTRSTnOE = 0x4;
1261                 nSRST = 0x02;
1262                 nSRSTnOE = 0x08;
1263         }
1264         else if ((strcmp(layout->name, "jtagkey_prototype_v1") == 0) ||
1265                 (strcmp(layout->name, "oocdlink") == 0))
1266         {
1267                 nTRST = 0x02;
1268                 nTRSTnOE = 0x1;
1269                 nSRST = 0x08;
1270                 nSRSTnOE = 0x04;
1271         }
1272         else
1273         {
1274                 ERROR("BUG: jtagkey_init called for non jtagkey layout");
1275                 exit(-1);
1276         }
1277
1278         high_output = 0x0;
1279         high_direction = 0x0f;
1280
1281         if (jtag_reset_config & RESET_TRST_OPEN_DRAIN)
1282         {
1283                 high_output |= nTRSTnOE;
1284                 high_output &= ~nTRST;
1285         }
1286         else
1287         {
1288                 high_output &= ~nTRSTnOE;
1289                 high_output |= nTRST;
1290         }
1291
1292         if (jtag_reset_config & RESET_SRST_PUSH_PULL)
1293         {
1294                 high_output &= ~nSRSTnOE;
1295                 high_output |= nSRST;
1296         }
1297         else
1298         {
1299                 high_output |= nSRSTnOE;
1300                 high_output &= ~nSRST;
1301         }
1302
1303         /* initialize high port */
1304         buf[0] = 0x82; /* command "set data bits high byte" */
1305         buf[1] = high_output; /* value */
1306         buf[2] = high_direction;   /* all outputs (xRST and xRSTnOE) */
1307         DEBUG("%2.2x %2.2x %2.2x", buf[0], buf[1], buf[2]);
1308
1309         if (((ft2232_write(buf, 3, &bytes_written)) != ERROR_OK) || (bytes_written != 3))
1310         {
1311                 ERROR("couldn't initialize FT2232 with 'JTAGkey' layout");
1312                 return ERROR_JTAG_INIT_FAILED;
1313         }
1314
1315         return ERROR_OK;
1316 }
1317
1318 int olimex_jtag_init(void)
1319 {
1320         u8 buf[3];
1321         u32 bytes_written;
1322
1323         low_output = 0x08;
1324         low_direction = 0x1b;
1325
1326         /* initialize low byte for jtag */
1327         buf[0] = 0x80; /* command "set data bits low byte" */
1328         buf[1] = low_output; /* value (TMS=1,TCK=0, TDI=0, nOE=0) */
1329         buf[2] = low_direction; /* dir (output=1), TCK/TDI/TMS=out, TDO=in, nOE=out */
1330         DEBUG("%2.2x %2.2x %2.2x", buf[0], buf[1], buf[2]);
1331
1332         if (((ft2232_write(buf, 3, &bytes_written)) != ERROR_OK) || (bytes_written != 3))
1333         {
1334                 ERROR("couldn't initialize FT2232 with 'JTAGkey' layout");
1335                 return ERROR_JTAG_INIT_FAILED;
1336         }
1337
1338         nTRST = 0x01;
1339         nTRSTnOE = 0x4;
1340         nSRST = 0x02;
1341         nSRSTnOE = 0x00; /* no output enable for nSRST */
1342
1343         high_output = 0x0;
1344         high_direction = 0x0f;
1345
1346         if (jtag_reset_config & RESET_TRST_OPEN_DRAIN)
1347         {
1348                 high_output |= nTRSTnOE;
1349                 high_output &= ~nTRST;
1350         }
1351         else
1352         {
1353                 high_output &= ~nTRSTnOE;
1354                 high_output |= nTRST;
1355         }
1356
1357         if (jtag_reset_config & RESET_SRST_PUSH_PULL)
1358         {
1359                 ERROR("can't set nSRST to push-pull on the Olimex ARM-USB-OCD");
1360         }
1361         else
1362         {
1363                 high_output &= ~nSRST;
1364         }
1365
1366         /* turn red LED on */
1367         high_output |= 0x08;
1368
1369         /* initialize high port */
1370         buf[0] = 0x82; /* command "set data bits high byte" */
1371         buf[1] = high_output; /* value */
1372         buf[2] = high_direction;   /* all outputs (xRST and xRSTnOE) */
1373         DEBUG("%2.2x %2.2x %2.2x", buf[0], buf[1], buf[2]);
1374
1375         if (((ft2232_write(buf, 3, &bytes_written)) != ERROR_OK) || (bytes_written != 3))
1376         {
1377                 ERROR("couldn't initialize FT2232 with 'JTAGkey' layout");
1378                 return ERROR_JTAG_INIT_FAILED;
1379         }
1380
1381         return ERROR_OK;
1382 }
1383
1384 int m5960_init(void)
1385 {
1386         u8 buf[3];
1387         u32 bytes_written;
1388
1389         low_output = 0x18;
1390         low_direction = 0xfb;
1391
1392         /* initialize low byte for jtag */
1393         buf[0] = 0x80; /* command "set data bits low byte" */
1394         buf[1] = low_output; /* value (TMS=1,TCK=0, TDI=0, nOE=0) */
1395         buf[2] = low_direction; /* dir (output=1), TCK/TDI/TMS=out, TDO=in, nOE[12]=out, n[ST]srst=out */
1396         DEBUG("%2.2x %2.2x %2.2x", buf[0], buf[1], buf[2]);
1397
1398         if (((ft2232_write(buf, 3, &bytes_written)) != ERROR_OK) || (bytes_written != 3))
1399         {
1400                 ERROR("couldn't initialize FT2232 with 'm5960' layout");
1401                 return ERROR_JTAG_INIT_FAILED;
1402         }
1403
1404         nTRST = 0x10;
1405         nTRSTnOE = 0x0; /* not output enable for nTRST */
1406         nSRST = 0x20;
1407         nSRSTnOE = 0x00; /* no output enable for nSRST */
1408
1409         high_output = 0x00;
1410         high_direction = 0x0c;
1411
1412         /* turn red LED1 on, LED2 off */
1413         high_output |= 0x08;
1414
1415         /* initialize high port */
1416         buf[0] = 0x82; /* command "set data bits high byte" */
1417         buf[1] = high_output; /* value */
1418         buf[2] = high_direction;   /* all outputs (xRST and xRSTnOE) */
1419         DEBUG("%2.2x %2.2x %2.2x", buf[0], buf[1], buf[2]);
1420
1421         if (((ft2232_write(buf, 3, &bytes_written)) != ERROR_OK) || (bytes_written != 3))
1422         {
1423                 ERROR("couldn't initialize FT2232 with 'm5960' layout");
1424                 return ERROR_JTAG_INIT_FAILED;
1425         }
1426
1427         return ERROR_OK;
1428 }
1429
1430 void olimex_jtag_blink(void)
1431 {
1432         /* Olimex ARM-USB-OCD has a LED connected to ACBUS3
1433          * ACBUS3 is bit 3 of the GPIOH port
1434          */
1435         if (high_output & 0x08)
1436         {
1437                 /* set port pin high */
1438                 high_output &= 0x07;
1439         }
1440         else
1441         {
1442                 /* set port pin low */
1443                 high_output |= 0x08;
1444         }
1445
1446         BUFFER_ADD = 0x82;
1447         BUFFER_ADD = high_output;
1448         BUFFER_ADD = high_direction;
1449 }
1450
1451 int ft2232_quit(void)
1452 {
1453 #if BUILD_FT2232_FTD2XX == 1
1454         FT_STATUS status;
1455
1456         status = FT_Close(ftdih);
1457 #elif BUILD_FT2232_LIBFTDI == 1
1458         ftdi_disable_bitbang(&ftdic);
1459
1460         ftdi_usb_close(&ftdic);
1461
1462         ftdi_deinit(&ftdic);
1463 #endif
1464
1465         free(ft2232_buffer);
1466
1467         return ERROR_OK;
1468 }
1469
1470 int ft2232_handle_device_desc_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1471 {
1472         if (argc == 1)
1473         {
1474                 ft2232_device_desc = strdup(args[0]);
1475         }
1476         else
1477         {
1478                 ERROR("expected exactly one argument to ft2232_device_desc <description>");
1479         }
1480
1481         return ERROR_OK;
1482 }
1483
1484 int ft2232_handle_serial_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1485 {
1486         if (argc == 1)
1487         {
1488                 ft2232_serial = strdup(args[0]);
1489         }
1490         else
1491         {
1492                 ERROR("expected exactly one argument to ft2232_serial <serial-number>");
1493         }
1494
1495         return ERROR_OK;
1496 }
1497
1498 int ft2232_handle_layout_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1499 {
1500         if (argc == 0)
1501                 return ERROR_OK;
1502
1503         ft2232_layout = malloc(strlen(args[0]) + 1);
1504         strcpy(ft2232_layout, args[0]);
1505
1506         return ERROR_OK;
1507 }
1508
1509 int ft2232_handle_vid_pid_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1510 {
1511         if (argc >= 2)
1512         {
1513                 ft2232_vid = strtol(args[0], NULL, 0);
1514                 ft2232_pid = strtol(args[1], NULL, 0);
1515         }
1516         else
1517         {
1518                 WARNING("incomplete ft2232_vid_pid configuration directive");
1519         }
1520
1521         return ERROR_OK;
1522 }