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   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 #endif
  27
  28 #include "replacements.h"
  29
  30 /* project specific includes */
  31 #include "log.h"
  32 #include "types.h"
  33 #include "jtag.h"
  34 #include "configuration.h"
  35 #include "time_support.h"
  36
  37 /* system includes */
  38 #include <string.h>
  39 #include <stdlib.h>
  40 #include <unistd.h>
  41
  42 /* FT2232 access library includes */
  43 #if BUILD_FT2232_FTD2XX == 1
  44 #include <ftd2xx.h>
  45 #elif BUILD_FT2232_LIBFTDI == 1
  46 #include <ftdi.h>
  47 #endif
  48
  49 #include <sys/time.h>
  50 #include <time.h>
  51
  52 /* enable this to debug io latency
  53  */
  54 #if 0
  55 #define _DEBUG_USB_IO_
  56 #endif
  57
  58 /* enable this to debug communication
  59  */
  60 #if 0
  61 #define _DEBUG_USB_COMMS_
  62 #endif
  63
  64 int ft2232_execute_queue(void);
  65
  66 int ft2232_speed(int speed);
  67 int ft2232_register_commands(struct command_context_s *cmd_ctx);
  68 int ft2232_init(void);
  69 int ft2232_quit(void);
  70
  71 int ft2232_handle_device_desc_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  72 int ft2232_handle_serial_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  73 int ft2232_handle_layout_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  74 int ft2232_handle_vid_pid_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  75 int ft2232_handle_latency_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 unsigned char ft2232_latency = 2;
  81
  82 #define MAX_USB_IDS     8
  83 /* vid = pid = 0 marks the end of the list */
  84 static u16 ft2232_vid[MAX_USB_IDS+1] = { 0x0403, 0 };
  85 static u16 ft2232_pid[MAX_USB_IDS+1] = { 0x6010, 0 };
  86
  87 typedef struct ft2232_layout_s
  88 {
  89         char* name;
  90         int(*init)(void);
  91         void(*reset)(int trst, int srst);
  92         void(*blink)(void);
  93 } ft2232_layout_t;
  94
  95 /* init procedures for supported layouts */
  96 int usbjtag_init(void);
  97 int jtagkey_init(void);
  98 int olimex_jtag_init(void);
  99 int flyswatter_init(void);
 100 int turtle_init(void);
 101 int comstick_init(void);
 102 int stm32stick_init(void);
 103
 104 /* reset procedures for supported layouts */
 105 void usbjtag_reset(int trst, int srst);
 106 void jtagkey_reset(int trst, int srst);
 107 void olimex_jtag_reset(int trst, int srst);
 108 void flyswatter_reset(int trst, int srst);
 109 void turtle_reset(int trst, int srst);
 110 void comstick_reset(int trst, int srst);
 111 void stm32stick_reset(int trst, int srst);
 112
 113 /* blink procedures for layouts that support a blinking led */
 114 void olimex_jtag_blink(void);
 115 void turtle_jtag_blink(void);
 116
 117 ft2232_layout_t ft2232_layouts[] =
 118 {
 119         {"usbjtag", usbjtag_init, usbjtag_reset, NULL},
 120         {"jtagkey", jtagkey_init, jtagkey_reset, NULL},
 121         {"jtagkey_prototype_v1", jtagkey_init, jtagkey_reset, NULL},
 122         {"oocdlink", jtagkey_init, jtagkey_reset, NULL},
 123         {"signalyzer", usbjtag_init, usbjtag_reset, NULL},
 124         {"evb_lm3s811", usbjtag_init, usbjtag_reset, NULL},
 125         {"olimex-jtag", olimex_jtag_init, olimex_jtag_reset, olimex_jtag_blink},
 126         {"flyswatter", flyswatter_init, flyswatter_reset, NULL},
 127         {"turtelizer2", turtle_init, turtle_reset, turtle_jtag_blink},
 128         {"comstick", comstick_init, comstick_reset, NULL},
 129         {"stm32stick", stm32stick_init, stm32stick_reset, NULL},
 130         {NULL, NULL, NULL},
 131 };
 132
 133 static u8 nTRST, nTRSTnOE, nSRST, nSRSTnOE;
 134
 135 static ft2232_layout_t *layout;
 136 static u8 low_output = 0x0;
 137 static u8 low_direction = 0x0;
 138 static u8 high_output = 0x0;
 139 static u8 high_direction = 0x0;
 140
 141 #if BUILD_FT2232_FTD2XX == 1
 142 static FT_HANDLE ftdih = NULL;
 143 #elif BUILD_FT2232_LIBFTDI == 1
 144 static struct ftdi_context ftdic;
 145 #endif
 146
 147 static u8 *ft2232_buffer = NULL;
 148 static int ft2232_buffer_size = 0;
 149 static int ft2232_read_pointer = 0;
 150 static int ft2232_expect_read = 0;
 151 #define FT2232_BUFFER_SIZE      131072
 152 #define BUFFER_ADD ft2232_buffer[ft2232_buffer_size++]
 153 #define BUFFER_READ ft2232_buffer[ft2232_read_pointer++]
 154
 155 jtag_interface_t ft2232_interface =
 156 {
 157
 158         .name = "ft2232",
 159
 160         .execute_queue = ft2232_execute_queue,
 161
 162         .speed = ft2232_speed,
 163         .register_commands = ft2232_register_commands,
 164         .init = ft2232_init,
 165         .quit = ft2232_quit,
 166 };
 167
 168 int ft2232_write(u8 *buf, int size, u32* bytes_written)
 169 {
 170 #if BUILD_FT2232_FTD2XX == 1
 171         FT_STATUS status;
 172         DWORD dw_bytes_written;
 173         if ((status = FT_Write(ftdih, buf, size, &dw_bytes_written)) != FT_OK)
 174         {
 175                 *bytes_written = dw_bytes_written;
 176                 LOG_ERROR("FT_Write returned: %lu", status);
 177                 return ERROR_JTAG_DEVICE_ERROR;
 178         }
 179         else
 180         {
 181                 *bytes_written = dw_bytes_written;
 182                 return ERROR_OK;
 183         }
 184 #elif BUILD_FT2232_LIBFTDI == 1
 185         int retval;
 186         if ((retval = ftdi_write_data(&ftdic, buf, size)) < 0)
 187         {
 188                 *bytes_written = 0;
 189                 LOG_ERROR("ftdi_write_data: %s", ftdi_get_error_string(&ftdic));
 190                 return ERROR_JTAG_DEVICE_ERROR;
 191         }
 192         else
 193         {
 194                 *bytes_written = retval;
 195                 return ERROR_OK;
 196         }
 197 #endif
 198 }
 199
 200 int ft2232_read(u8* buf, int size, u32* bytes_read)
 201 {
 202 #if BUILD_FT2232_FTD2XX == 1
 203         DWORD dw_bytes_read;
 204         FT_STATUS status;
 205         int timeout = 5;
 206         *bytes_read = 0;
 207
 208         while ((*bytes_read < size) && timeout--)
 209         {
 210                 if ((status = FT_Read(ftdih, buf + *bytes_read, size -
 211                         *bytes_read, &dw_bytes_read)) != FT_OK)
 212                 {
 213                         *bytes_read = 0;
 214                         LOG_ERROR("FT_Read returned: %lu", status);
 215                         return ERROR_JTAG_DEVICE_ERROR;
 216                 }
 217                 *bytes_read += dw_bytes_read;
 218         }
 219 #elif BUILD_FT2232_LIBFTDI == 1
 220         int retval;
 221         int timeout = 100;
 222         *bytes_read = 0;
 223
 224         while ((*bytes_read < size) && timeout--)
 225         {
 226                 if ((retval = ftdi_read_data(&ftdic, buf + *bytes_read, size - *bytes_read)) < 0)
 227                 {
 228                         *bytes_read = 0;
 229                         LOG_ERROR("ftdi_read_data: %s", ftdi_get_error_string(&ftdic));
 230                         return ERROR_JTAG_DEVICE_ERROR;
 231                 }
 232                 *bytes_read += retval;
 233         }
 234 #endif
 235
 236         if (*bytes_read < size)
 237         {
 238                 LOG_ERROR("couldn't read the requested number of bytes from FT2232 device (%i < %i)", *bytes_read, size);
 239                 return ERROR_JTAG_DEVICE_ERROR;
 240         }
 241
 242         return ERROR_OK;
 243 }
 244
 245 int ft2232_speed(int speed)
 246 {
 247         u8 buf[3];
 248         int retval;
 249         u32 bytes_written;
 250
 251         buf[0] = 0x86; /* command "set divisor" */
 252         buf[1] = speed & 0xff; /* valueL (0=6MHz, 1=3MHz, 2=2.0MHz, ...*/
 253         buf[2] = (speed >> 8) & 0xff; /* valueH */
 254
 255         LOG_DEBUG("%2.2x %2.2x %2.2x", buf[0], buf[1], buf[2]);
 256         if (((retval = ft2232_write(buf, 3, &bytes_written)) != ERROR_OK) || (bytes_written != 3))
 257         {
 258                 LOG_ERROR("couldn't set FT2232 TCK speed");
 259                 return retval;
 260         }
 261
 262         jtag_speed = speed;
 263
 264         return ERROR_OK;
 265 }
 266
 267 int ft2232_register_commands(struct command_context_s *cmd_ctx)
 268 {
 269         register_command(cmd_ctx, NULL, "ft2232_device_desc", ft2232_handle_device_desc_command,
 270                 COMMAND_CONFIG, NULL);
 271         register_command(cmd_ctx, NULL, "ft2232_serial", ft2232_handle_serial_command,
 272                 COMMAND_CONFIG, NULL);
 273         register_command(cmd_ctx, NULL, "ft2232_layout", ft2232_handle_layout_command,
 274                 COMMAND_CONFIG, NULL);
 275         register_command(cmd_ctx, NULL, "ft2232_vid_pid", ft2232_handle_vid_pid_command,
 276                                          COMMAND_CONFIG, NULL);
 277         register_command(cmd_ctx, NULL, "ft2232_latency", ft2232_handle_latency_command,
 278                                          COMMAND_CONFIG, NULL);
 279         return ERROR_OK;
 280 }
 281
 282 void ft2232_end_state(enum tap_state state)
 283 {
 284         if (tap_move_map[state] != -1)
 285                 end_state = state;
 286         else
 287         {
 288                 LOG_ERROR("BUG: %i is not a valid end state", state);
 289                 exit(-1);
 290         }
 291 }
 292
 293 void ft2232_read_scan(enum scan_type type, u8* buffer, int scan_size)
 294 {
 295         int num_bytes = ((scan_size + 7) / 8);
 296         int bits_left = scan_size;
 297         int cur_byte = 0;
 298
 299         while(num_bytes-- > 1)
 300         {
 301                 buffer[cur_byte] = BUFFER_READ;
 302                 cur_byte++;
 303                 bits_left -= 8;
 304         }
 305
 306         buffer[cur_byte] = 0x0;
 307
 308         if (bits_left > 1)
 309         {
 310                 buffer[cur_byte] = BUFFER_READ >> 1;
 311         }
 312
 313         buffer[cur_byte] = (buffer[cur_byte] | ((BUFFER_READ & 0x02) << 6)) >> (8 - bits_left);
 314
 315 }
 316
 317 void ft2232_debug_dump_buffer(void)
 318 {
 319         int i;
 320         char line[256];
 321         char *line_p = line;
 322
 323         for (i = 0; i < ft2232_buffer_size; i++)
 324         {
 325                 line_p += snprintf(line_p, 256 - (line_p - line), "%2.2x ", ft2232_buffer[i]);
 326                 if (i % 16 == 15)
 327                 {
 328                         LOG_DEBUG("%s", line);
 329                         line_p = line;
 330                 }
 331         }
 332
 333         if (line_p != line)
 334                 LOG_DEBUG("%s", line);
 335 }
 336
 337 int ft2232_send_and_recv(jtag_command_t *first, jtag_command_t *last)
 338 {
 339         jtag_command_t *cmd;
 340         u8 *buffer;
 341         int scan_size;
 342         enum scan_type type;
 343         int retval;
 344         u32 bytes_written;
 345         u32 bytes_read;
 346
 347 #ifdef _DEBUG_USB_IO_
 348         struct timeval start, inter, inter2, end;
 349         struct timeval d_inter, d_inter2, d_end;
 350 #endif
 351
 352 #ifdef _DEBUG_USB_COMMS_
 353         LOG_DEBUG("write buffer (size %i):", ft2232_buffer_size);
 354         ft2232_debug_dump_buffer();
 355 #endif
 356
 357 #ifdef _DEBUG_USB_IO_
 358         gettimeofday(&start, NULL);
 359 #endif
 360
 361         if ((retval = ft2232_write(ft2232_buffer, ft2232_buffer_size, &bytes_written)) != ERROR_OK)
 362         {
 363                 LOG_ERROR("couldn't write MPSSE commands to FT2232");
 364                 exit(-1);
 365         }
 366
 367 #ifdef _DEBUG_USB_IO_
 368         gettimeofday(&inter, NULL);
 369 #endif
 370
 371         if (ft2232_expect_read)
 372         {
 373                 int timeout = 100;
 374                 ft2232_buffer_size = 0;
 375
 376 #ifdef _DEBUG_USB_IO_
 377                 gettimeofday(&inter2, NULL);
 378 #endif
 379
 380                 if ((retval = ft2232_read(ft2232_buffer, ft2232_expect_read, &bytes_read)) != ERROR_OK)
 381                 {
 382                         LOG_ERROR("couldn't read from FT2232");
 383                         exit(-1);
 384                 }
 385
 386 #ifdef _DEBUG_USB_IO_
 387                 gettimeofday(&end, NULL);
 388
 389                 timeval_subtract(&d_inter, &inter, &start);
 390                 timeval_subtract(&d_inter2, &inter2, &start);
 391                 timeval_subtract(&d_end, &end, &start);
 392
 393                 LOG_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);
 394 #endif
 395
 396
 397                 ft2232_buffer_size = bytes_read;
 398
 399                 if (ft2232_expect_read != ft2232_buffer_size)
 400                 {
 401                         LOG_ERROR("ft2232_expect_read (%i) != ft2232_buffer_size (%i) (%i retries)", ft2232_expect_read, ft2232_buffer_size, 100 - timeout);
 402                         ft2232_debug_dump_buffer();
 403
 404                         exit(-1);
 405                 }
 406
 407 #ifdef _DEBUG_USB_COMMS_
 408                 LOG_DEBUG("read buffer (%i retries): %i bytes", 100 - timeout, ft2232_buffer_size);
 409                 ft2232_debug_dump_buffer();
 410 #endif
 411         }
 412
 413         ft2232_expect_read = 0;
 414         ft2232_read_pointer = 0;
 415
 416         /* return ERROR_OK, unless a jtag_read_buffer returns a failed check
 417          * that wasn't handled by a caller-provided error handler
 418          */
 419         retval = ERROR_OK;
 420
 421         cmd = first;
 422         while (cmd != last)
 423         {
 424                 switch (cmd->type)
 425                 {
 426                         case JTAG_SCAN:
 427                                 type = jtag_scan_type(cmd->cmd.scan);
 428                                 if (type != SCAN_OUT)
 429                                 {
 430                                         scan_size = jtag_scan_size(cmd->cmd.scan);
 431                                         buffer = calloc(CEIL(scan_size, 8), 1);
 432                                         ft2232_read_scan(type, buffer, scan_size);
 433                                         if (jtag_read_buffer(buffer, cmd->cmd.scan) != ERROR_OK)
 434                                                 retval = ERROR_JTAG_QUEUE_FAILED;
 435                                         free(buffer);
 436                                 }
 437                                 break;
 438                         default:
 439                                 break;
 440                 }
 441                 cmd = cmd->next;
 442         }
 443
 444         ft2232_buffer_size = 0;
 445
 446         return retval;
 447 }
 448
 449 void ft2232_add_pathmove(pathmove_command_t *cmd)
 450 {
 451         int num_states = cmd->num_states;
 452         u8 tms_byte;
 453         int state_count;
 454
 455         state_count = 0;
 456         while (num_states)
 457         {
 458                 tms_byte = 0x0;
 459                 int bit_count = 0;
 460
 461                 int num_states_batch = num_states > 7 ? 7 : num_states;
 462
 463                 /* command "Clock Data to TMS/CS Pin (no Read)" */
 464                 BUFFER_ADD = 0x4b;
 465                 /* number of states remaining */
 466                 BUFFER_ADD = num_states_batch - 1;
 467
 468                 while (num_states_batch--)
 469                 {
 470                         if (tap_transitions[cur_state].low == cmd->path[state_count])
 471                                 buf_set_u32(&tms_byte, bit_count++, 1, 0x0);
 472                         else if (tap_transitions[cur_state].high == cmd->path[state_count])
 473                                 buf_set_u32(&tms_byte, bit_count++, 1, 0x1);
 474                         else
 475                         {
 476                                 LOG_ERROR("BUG: %s -> %s isn't a valid TAP transition", tap_state_strings[cur_state], tap_state_strings[cmd->path[state_count]]);
 477                                 exit(-1);
 478                         }
 479
 480                         cur_state = cmd->path[state_count];
 481                         state_count++;
 482                         num_states--;
 483                 }
 484
 485                 BUFFER_ADD = tms_byte;
 486         }
 487
 488         end_state = cur_state;
 489 }
 490
 491 void ft2232_add_scan(int ir_scan, enum scan_type type, u8 *buffer, int scan_size)
 492 {
 493         int num_bytes = (scan_size + 7) / 8;
 494         int bits_left = scan_size;
 495         int cur_byte = 0;
 496         int last_bit;
 497
 498         if (!((!ir_scan && (cur_state == TAP_SD)) || (ir_scan && (cur_state == TAP_SI))))
 499         {
 500                 /* command "Clock Data to TMS/CS Pin (no Read)" */
 501                 BUFFER_ADD = 0x4b;
 502                 /* scan 7 bit */
 503                 BUFFER_ADD = 0x6;
 504                 /* TMS data bits */
 505                 if (ir_scan)
 506                 {
 507                         BUFFER_ADD = TAP_MOVE(cur_state, TAP_SI);
 508                         cur_state = TAP_SI;
 509                 }
 510                 else
 511                 {
 512                         BUFFER_ADD = TAP_MOVE(cur_state, TAP_SD);
 513                         cur_state = TAP_SD;
 514                 }
 515                 /* LOG_DEBUG("added TMS scan (no read)"); */
 516         }
 517
 518         /* add command for complete bytes */
 519         while (num_bytes > 1)
 520         {
 521                 int thisrun_bytes;
 522                 if (type == SCAN_IO)
 523                 {
 524                         /* Clock Data Bytes In and Out LSB First */
 525                         BUFFER_ADD = 0x39;
 526                         /* LOG_DEBUG("added TDI bytes (io %i)", num_bytes); */
 527                 }
 528                 else if (type == SCAN_OUT)
 529                 {
 530                         /* Clock Data Bytes Out on -ve Clock Edge LSB First (no Read) */
 531                         BUFFER_ADD = 0x19;
 532                         /* LOG_DEBUG("added TDI bytes (o)"); */
 533                 }
 534                 else if (type == SCAN_IN)
 535                 {
 536                         /* Clock Data Bytes In on +ve Clock Edge LSB First (no Write) */
 537                         BUFFER_ADD = 0x28;
 538                         /* LOG_DEBUG("added TDI bytes (i %i)", num_bytes); */
 539                 }
 540                 thisrun_bytes = (num_bytes > 65537) ? 65536 : (num_bytes - 1);
 541                 num_bytes -= thisrun_bytes;
 542                 BUFFER_ADD = (thisrun_bytes - 1) & 0xff;
 543                 BUFFER_ADD = ((thisrun_bytes - 1) >> 8) & 0xff;
 544                 if (type != SCAN_IN)
 545                 {
 546                         /* add complete bytes */
 547                         while(thisrun_bytes-- > 0)
 548                         {
 549                                 BUFFER_ADD = buffer[cur_byte];
 550                                 cur_byte++;
 551                                 bits_left -= 8;
 552                         }
 553                 }
 554                 else /* (type == SCAN_IN) */
 555                 {
 556                         bits_left -= 8 * (thisrun_bytes);
 557                 }
 558         }
 559
 560         /* the most signifcant bit is scanned during TAP movement */
 561         if (type != SCAN_IN)
 562                 last_bit = (buffer[cur_byte] >> (bits_left - 1)) & 0x1;
 563         else
 564                 last_bit = 0;
 565
 566         /* process remaining bits but the last one */
 567         if (bits_left > 1)
 568         {
 569                 if (type == SCAN_IO)
 570                 {
 571                         /* Clock Data Bits In and Out LSB First */
 572                         BUFFER_ADD = 0x3b;
 573                         /* LOG_DEBUG("added TDI bits (io) %i", bits_left - 1); */
 574                 }
 575                 else if (type == SCAN_OUT)
 576                 {
 577                         /* Clock Data Bits Out on -ve Clock Edge LSB First (no Read) */
 578                         BUFFER_ADD = 0x1b;
 579                         /* LOG_DEBUG("added TDI bits (o)"); */
 580                 }
 581                 else if (type == SCAN_IN)
 582                 {
 583                         /* Clock Data Bits In on +ve Clock Edge LSB First (no Write) */
 584                         BUFFER_ADD = 0x2a;
 585                         /* LOG_DEBUG("added TDI bits (i %i)", bits_left - 1); */
 586                 }
 587                 BUFFER_ADD = bits_left - 2;
 588                 if (type != SCAN_IN)
 589                         BUFFER_ADD = buffer[cur_byte];
 590         }
 591
 592         if ((ir_scan && (end_state == TAP_SI)) ||
 593                 (!ir_scan && (end_state == TAP_SD)))
 594         {
 595                 if (type == SCAN_IO)
 596                 {
 597                         /* Clock Data Bits In and Out LSB First */
 598                         BUFFER_ADD = 0x3b;
 599                         /* LOG_DEBUG("added TDI bits (io) %i", bits_left - 1); */
 600                 }
 601                 else if (type == SCAN_OUT)
 602                 {
 603                         /* Clock Data Bits Out on -ve Clock Edge LSB First (no Read) */
 604                         BUFFER_ADD = 0x1b;
 605                         /* LOG_DEBUG("added TDI bits (o)"); */
 606                 }
 607                 else if (type == SCAN_IN)
 608                 {
 609                         /* Clock Data Bits In on +ve Clock Edge LSB First (no Write) */
 610                         BUFFER_ADD = 0x2a;
 611                         /* LOG_DEBUG("added TDI bits (i %i)", bits_left - 1); */
 612                 }
 613                 BUFFER_ADD = 0x0;
 614                 BUFFER_ADD = last_bit;
 615         }
 616         else
 617         {
 618                 /* move from Shift-IR/DR to end state */
 619                 if (type != SCAN_OUT)
 620                 {
 621                         /* Clock Data to TMS/CS Pin with Read */
 622                         BUFFER_ADD = 0x6b;
 623                         /* LOG_DEBUG("added TMS scan (read)"); */
 624                 }
 625                 else
 626                 {
 627                         /* Clock Data to TMS/CS Pin (no Read) */
 628                         BUFFER_ADD = 0x4b;
 629                         /* LOG_DEBUG("added TMS scan (no read)"); */
 630                 }
 631                 BUFFER_ADD = 0x6;
 632                 BUFFER_ADD = TAP_MOVE(cur_state, end_state) | (last_bit << 7);
 633                 cur_state = end_state;
 634         }
 635 }
 636
 637 int ft2232_large_scan(scan_command_t *cmd, enum scan_type type, u8 *buffer, int scan_size)
 638 {
 639         int num_bytes = (scan_size + 7) / 8;
 640         int bits_left = scan_size;
 641         int cur_byte = 0;
 642         int last_bit;
 643         u8 *receive_buffer = malloc(CEIL(scan_size, 8));
 644         u8 *receive_pointer = receive_buffer;
 645         u32 bytes_written;
 646         u32 bytes_read;
 647         int retval;
 648         int thisrun_read = 0;
 649
 650         if (cmd->ir_scan)
 651         {
 652                 LOG_ERROR("BUG: large IR scans are not supported");
 653                 exit(-1);
 654         }
 655
 656         if (cur_state != TAP_SD)
 657         {
 658                 /* command "Clock Data to TMS/CS Pin (no Read)" */
 659                 BUFFER_ADD = 0x4b;
 660                 /* scan 7 bit */
 661                 BUFFER_ADD = 0x6;
 662                 /* TMS data bits */
 663                 BUFFER_ADD = TAP_MOVE(cur_state, TAP_SD);
 664                 cur_state = TAP_SD;
 665         }
 666
 667         if ((retval = ft2232_write(ft2232_buffer, ft2232_buffer_size, &bytes_written)) != ERROR_OK)
 668         {
 669                 LOG_ERROR("couldn't write MPSSE commands to FT2232");
 670                 exit(-1);
 671         }
 672         LOG_DEBUG("ft2232_buffer_size: %i, bytes_written: %i", ft2232_buffer_size, bytes_written);
 673         ft2232_buffer_size = 0;
 674
 675         /* add command for complete bytes */
 676         while (num_bytes > 1)
 677         {
 678                 int thisrun_bytes;
 679
 680                 if (type == SCAN_IO)
 681                 {
 682                         /* Clock Data Bytes In and Out LSB First */
 683                         BUFFER_ADD = 0x39;
 684                         /* LOG_DEBUG("added TDI bytes (io %i)", num_bytes); */
 685                 }
 686                 else if (type == SCAN_OUT)
 687                 {
 688                         /* Clock Data Bytes Out on -ve Clock Edge LSB First (no Read) */
 689                         BUFFER_ADD = 0x19;
 690                         /* LOG_DEBUG("added TDI bytes (o)"); */
 691                 }
 692                 else if (type == SCAN_IN)
 693                 {
 694                         /* Clock Data Bytes In on +ve Clock Edge LSB First (no Write) */
 695                         BUFFER_ADD = 0x28;
 696                         /* LOG_DEBUG("added TDI bytes (i %i)", num_bytes); */
 697                 }
 698                 thisrun_bytes = (num_bytes > 65537) ? 65536 : (num_bytes - 1);
 699                 thisrun_read = thisrun_bytes;
 700                 num_bytes -= thisrun_bytes;
 701                 BUFFER_ADD = (thisrun_bytes - 1) & 0xff;
 702                 BUFFER_ADD = ((thisrun_bytes - 1) >> 8) & 0xff;
 703                 if (type != SCAN_IN)
 704                 {
 705                         /* add complete bytes */
 706                         while(thisrun_bytes-- > 0)
 707                         {
 708                                 BUFFER_ADD = buffer[cur_byte];
 709                                 cur_byte++;
 710                                 bits_left -= 8;
 711                         }
 712                 }
 713                 else /* (type == SCAN_IN) */
 714                 {
 715                         bits_left -= 8 * (thisrun_bytes);
 716                 }
 717
 718                 if ((retval = ft2232_write(ft2232_buffer, ft2232_buffer_size, &bytes_written)) != ERROR_OK)
 719                 {
 720                         LOG_ERROR("couldn't write MPSSE commands to FT2232");
 721                         exit(-1);
 722                 }
 723                 LOG_DEBUG("ft2232_buffer_size: %i, bytes_written: %i", ft2232_buffer_size, bytes_written);
 724                 ft2232_buffer_size = 0;
 725
 726                 if (type != SCAN_OUT)
 727                 {
 728                         if ((retval = ft2232_read(receive_pointer, thisrun_read, &bytes_read)) != ERROR_OK)
 729                         {
 730                                 LOG_ERROR("couldn't read from FT2232");
 731                                 exit(-1);
 732                         }
 733                         LOG_DEBUG("thisrun_read: %i, bytes_read: %i", thisrun_read, bytes_read);
 734                         receive_pointer += bytes_read;
 735                 }
 736         }
 737
 738         thisrun_read = 0;
 739
 740         /* the most signifcant bit is scanned during TAP movement */
 741         if (type != SCAN_IN)
 742                 last_bit = (buffer[cur_byte] >> (bits_left - 1)) & 0x1;
 743         else
 744                 last_bit = 0;
 745
 746         /* process remaining bits but the last one */
 747         if (bits_left > 1)
 748         {
 749                 if (type == SCAN_IO)
 750                 {
 751                         /* Clock Data Bits In and Out LSB First */
 752                         BUFFER_ADD = 0x3b;
 753                         /* LOG_DEBUG("added TDI bits (io) %i", bits_left - 1); */
 754                 }
 755                 else if (type == SCAN_OUT)
 756                 {
 757                         /* Clock Data Bits Out on -ve Clock Edge LSB First (no Read) */
 758                         BUFFER_ADD = 0x1b;
 759                         /* LOG_DEBUG("added TDI bits (o)"); */
 760                 }
 761                 else if (type == SCAN_IN)
 762                 {
 763                         /* Clock Data Bits In on +ve Clock Edge LSB First (no Write) */
 764                         BUFFER_ADD = 0x2a;
 765                         /* LOG_DEBUG("added TDI bits (i %i)", bits_left - 1); */
 766                 }
 767                 BUFFER_ADD = bits_left - 2;
 768                 if (type != SCAN_IN)
 769                         BUFFER_ADD = buffer[cur_byte];
 770
 771                 if (type != SCAN_OUT)
 772                         thisrun_read += 2;
 773         }
 774
 775         if (end_state == TAP_SD)
 776         {
 777                 if (type == SCAN_IO)
 778                 {
 779                         /* Clock Data Bits In and Out LSB First */
 780                         BUFFER_ADD = 0x3b;
 781                         /* LOG_DEBUG("added TDI bits (io) %i", bits_left - 1); */
 782                 }
 783                 else if (type == SCAN_OUT)
 784                 {
 785                         /* Clock Data Bits Out on -ve Clock Edge LSB First (no Read) */
 786                         BUFFER_ADD = 0x1b;
 787                         /* LOG_DEBUG("added TDI bits (o)"); */
 788                 }
 789                 else if (type == SCAN_IN)
 790                 {
 791                         /* Clock Data Bits In on +ve Clock Edge LSB First (no Write) */
 792                         BUFFER_ADD = 0x2a;
 793                         /* LOG_DEBUG("added TDI bits (i %i)", bits_left - 1); */
 794                 }
 795                 BUFFER_ADD = 0x0;
 796                 BUFFER_ADD = last_bit;
 797         }
 798         else
 799         {
 800                 /* move from Shift-IR/DR to end state */
 801                 if (type != SCAN_OUT)
 802                 {
 803                         /* Clock Data to TMS/CS Pin with Read */
 804                         BUFFER_ADD = 0x6b;
 805                         /* LOG_DEBUG("added TMS scan (read)"); */
 806                 }
 807                 else
 808                 {
 809                         /* Clock Data to TMS/CS Pin (no Read) */
 810                         BUFFER_ADD = 0x4b;
 811                         /* LOG_DEBUG("added TMS scan (no read)"); */
 812                 }
 813                 BUFFER_ADD = 0x6;
 814                 BUFFER_ADD = TAP_MOVE(cur_state, end_state) | (last_bit << 7);
 815                 cur_state = end_state;
 816         }
 817
 818         if (type != SCAN_OUT)
 819                 thisrun_read += 1;
 820
 821         if ((retval = ft2232_write(ft2232_buffer, ft2232_buffer_size, &bytes_written)) != ERROR_OK)
 822         {
 823                 LOG_ERROR("couldn't write MPSSE commands to FT2232");
 824                 exit(-1);
 825         }
 826         LOG_DEBUG("ft2232_buffer_size: %i, bytes_written: %i", ft2232_buffer_size, bytes_written);
 827         ft2232_buffer_size = 0;
 828
 829         if (type != SCAN_OUT)
 830         {
 831                 if ((retval = ft2232_read(receive_pointer, thisrun_read, &bytes_read)) != ERROR_OK)
 832                 {
 833                         LOG_ERROR("couldn't read from FT2232");
 834                         exit(-1);
 835                 }
 836                 LOG_DEBUG("thisrun_read: %i, bytes_read: %i", thisrun_read, bytes_read);
 837                 receive_pointer += bytes_read;
 838         }
 839
 840         return ERROR_OK;
 841 }
 842
 843 int ft2232_predict_scan_out(int scan_size, enum scan_type type)
 844 {
 845         int predicted_size = 3;
 846         int num_bytes = (scan_size - 1) / 8;
 847
 848         if (cur_state != TAP_SD)
 849                 predicted_size += 3;
 850
 851         if (type == SCAN_IN)    /* only from device to host */
 852         {
 853                 /* complete bytes */
 854                 predicted_size += (CEIL(num_bytes, 65536)) * 3;
 855                 /* remaining bits - 1 (up to 7) */
 856                 predicted_size += ((scan_size - 1) % 8) ? 2 : 0;
 857         }
 858         else                                    /* host to device, or bidirectional */
 859         {
 860                 /* complete bytes */
 861                 predicted_size += num_bytes + (CEIL(num_bytes, 65536)) * 3;
 862                 /* remaining bits -1 (up to 7) */
 863                 predicted_size += ((scan_size - 1) % 8) ? 3 : 0;
 864         }
 865
 866         return predicted_size;
 867 }
 868
 869 int ft2232_predict_scan_in(int scan_size, enum scan_type type)
 870 {
 871         int predicted_size = 0;
 872
 873         if (type != SCAN_OUT)
 874         {
 875                 /* complete bytes */
 876                 predicted_size += (CEIL(scan_size, 8) > 1) ? (CEIL(scan_size, 8) - 1) : 0;
 877                 /* remaining bits - 1 */
 878                 predicted_size += ((scan_size - 1) % 8) ? 1 : 0;
 879                 /* last bit (from TMS scan) */
 880                 predicted_size += 1;
 881         }
 882
 883         /* LOG_DEBUG("scan_size: %i, predicted_size: %i", scan_size, predicted_size); */
 884
 885         return predicted_size;
 886 }
 887
 888 void usbjtag_reset(int trst, int srst)
 889 {
 890         if (trst == 1)
 891         {
 892                 cur_state = TAP_TLR;
 893                 if (jtag_reset_config & RESET_TRST_OPEN_DRAIN)
 894                         low_direction |= nTRSTnOE;      /* switch to output pin (output is low) */
 895                 else
 896                         low_output &= ~nTRST;   /* switch output low */
 897         }
 898         else if (trst == 0)
 899         {
 900                 if (jtag_reset_config & RESET_TRST_OPEN_DRAIN)
 901                         low_direction &= ~nTRSTnOE; /* switch to input pin (high-Z + internal and external pullup) */
 902                 else
 903                         low_output |= nTRST; /* switch output high */
 904         }
 905
 906         if (srst == 1)
 907         {
 908                 if (jtag_reset_config & RESET_SRST_PUSH_PULL)
 909                         low_output &= ~nSRST;   /* switch output low */
 910                 else
 911                         low_direction |= nSRSTnOE;      /* switch to output pin (output is low) */
 912         }
 913         else if (srst == 0)
 914         {
 915                 if (jtag_reset_config & RESET_SRST_PUSH_PULL)
 916                         low_output |= nSRST;    /* switch output high */
 917                 else
 918                         low_direction &= ~nSRSTnOE;     /* switch to input pin (high-Z) */
 919         }
 920
 921         /* command "set data bits low byte" */
 922         BUFFER_ADD = 0x80;
 923         BUFFER_ADD = low_output;
 924         BUFFER_ADD = low_direction;
 925
 926 }
 927
 928 void jtagkey_reset(int trst, int srst)
 929 {
 930         if (trst == 1)
 931         {
 932                 cur_state = TAP_TLR;
 933                 if (jtag_reset_config & RESET_TRST_OPEN_DRAIN)
 934                         high_output &= ~nTRSTnOE;
 935                 else
 936                         high_output &= ~nTRST;
 937         }
 938         else if (trst == 0)
 939         {
 940                 if (jtag_reset_config & RESET_TRST_OPEN_DRAIN)
 941                         high_output |= nTRSTnOE;
 942                 else
 943                         high_output |= nTRST;
 944         }
 945
 946         if (srst == 1)
 947         {
 948                 if (jtag_reset_config & RESET_SRST_PUSH_PULL)
 949                         high_output &= ~nSRST;
 950                 else
 951                         high_output &= ~nSRSTnOE;
 952         }
 953         else if (srst == 0)
 954         {
 955                 if (jtag_reset_config & RESET_SRST_PUSH_PULL)
 956                         high_output |= nSRST;
 957                 else
 958                         high_output |= nSRSTnOE;
 959         }
 960
 961         /* command "set data bits high byte" */
 962         BUFFER_ADD = 0x82;
 963         BUFFER_ADD = high_output;
 964         BUFFER_ADD = high_direction;
 965         LOG_DEBUG("trst: %i, srst: %i, high_output: 0x%2.2x, high_direction: 0x%2.2x", trst, srst, high_output, high_direction);
 966 }
 967
 968 void olimex_jtag_reset(int trst, int srst)
 969 {
 970         if (trst == 1)
 971         {
 972                 cur_state = TAP_TLR;
 973                 if (jtag_reset_config & RESET_TRST_OPEN_DRAIN)
 974                         high_output &= ~nTRSTnOE;
 975                 else
 976                         high_output &= ~nTRST;
 977         }
 978         else if (trst == 0)
 979         {
 980                 if (jtag_reset_config & RESET_TRST_OPEN_DRAIN)
 981                         high_output |= nTRSTnOE;
 982                 else
 983                         high_output |= nTRST;
 984         }
 985
 986     if (srst == 1)
 987     {
 988         high_output |= nSRST;
 989     }
 990     else if (srst == 0)
 991     {
 992         high_output &= ~nSRST;
 993     }
 994
 995     /* command "set data bits high byte" */
 996     BUFFER_ADD = 0x82;
 997     BUFFER_ADD = high_output;
 998     BUFFER_ADD = high_direction;
 999     LOG_DEBUG("trst: %i, srst: %i, high_output: 0x%2.2x, high_direction: 0x%2.2x", trst, srst, high_output, high_direction);
1000 }
1001
1002 void flyswatter_reset(int trst, int srst)
1003 {
1004         if (trst == 1)
1005         {
1006                 cur_state = TAP_TLR;
1007                 low_output &= ~nTRST;
1008         }
1009         else if (trst == 0)
1010         {
1011                 low_output |= nTRST;
1012         }
1013
1014     if (srst == 1)
1015     {
1016         low_output |= nSRST;
1017     }
1018     else if (srst == 0)
1019     {
1020         low_output &= ~nSRST;
1021     }
1022
1023     /* command "set data bits low byte" */
1024     BUFFER_ADD = 0x80;
1025     BUFFER_ADD = low_output;
1026     BUFFER_ADD = low_direction;
1027     LOG_DEBUG("trst: %i, srst: %i, low_output: 0x%2.2x, low_direction: 0x%2.2x", trst, srst, low_output, low_direction);
1028 }
1029
1030 void turtle_reset(int trst, int srst)
1031 {
1032         trst = trst;
1033
1034         if (srst == 1)
1035         {
1036                 low_output |= nSRST;
1037         }
1038         else if (srst == 0)
1039         {
1040                 low_output &= ~nSRST;
1041         }
1042
1043         /* command "set data bits low byte" */
1044         BUFFER_ADD = 0x80;
1045         BUFFER_ADD = low_output;
1046         BUFFER_ADD = low_direction;
1047         LOG_DEBUG("srst: %i, low_output: 0x%2.2x, low_direction: 0x%2.2x", srst, low_output, low_direction);
1048 }
1049
1050 void comstick_reset(int trst, int srst)
1051 {
1052         if (trst == 1)
1053         {
1054                 cur_state = TAP_TLR;
1055                 high_output &= ~nTRST;
1056         }
1057         else if (trst == 0)
1058         {
1059                 high_output |= nTRST;
1060         }
1061
1062     if (srst == 1)
1063     {
1064         high_output &= ~nSRST;
1065     }
1066     else if (srst == 0)
1067     {
1068         high_output |= nSRST;
1069     }
1070
1071         /* command "set data bits high byte" */
1072         BUFFER_ADD = 0x82;
1073         BUFFER_ADD = high_output;
1074         BUFFER_ADD = high_direction;
1075         LOG_DEBUG("trst: %i, srst: %i, high_output: 0x%2.2x, high_direction: 0x%2.2x", trst, srst, high_output, high_direction);
1076 }
1077
1078 void stm32stick_reset(int trst, int srst)
1079 {
1080         if (trst == 1)
1081         {
1082                 cur_state = TAP_TLR;
1083                 high_output &= ~nTRST;
1084         }
1085         else if (trst == 0)
1086         {
1087                 high_output |= nTRST;
1088         }
1089
1090     if (srst == 1)
1091     {
1092         low_output &= ~nSRST;
1093     }
1094     else if (srst == 0)
1095     {
1096         low_output |= nSRST;
1097     }
1098
1099         /* command "set data bits low byte" */
1100         BUFFER_ADD = 0x80;
1101         BUFFER_ADD = low_output;
1102         BUFFER_ADD = low_direction;
1103
1104         /* command "set data bits high byte" */
1105         BUFFER_ADD = 0x82;
1106         BUFFER_ADD = high_output;
1107         BUFFER_ADD = high_direction;
1108         LOG_DEBUG("trst: %i, srst: %i, high_output: 0x%2.2x, high_direction: 0x%2.2x", trst, srst, high_output, high_direction);
1109 }
1110
1111 int ft2232_execute_queue()
1112 {
1113         jtag_command_t *cmd = jtag_command_queue; /* currently processed command */
1114         jtag_command_t *first_unsent = cmd;     /* next command that has to be sent */
1115         u8 *buffer;
1116         int scan_size;  /* size of IR or DR scan */
1117         enum scan_type type;
1118         int i;
1119         int predicted_size = 0;
1120         int require_send = 0;
1121         int retval;
1122
1123         /* return ERROR_OK, unless ft2232_send_and_recv reports a failed check
1124          * that wasn't handled by a caller-provided error handler
1125          */
1126         retval = ERROR_OK;
1127
1128         ft2232_buffer_size = 0;
1129         ft2232_expect_read = 0;
1130
1131         /* blink, if the current layout has that feature */
1132         if (layout->blink)
1133                 layout->blink();
1134
1135         while (cmd)
1136         {
1137                 switch(cmd->type)
1138                 {
1139                         case JTAG_END_STATE:
1140                                 if (cmd->cmd.end_state->end_state != -1)
1141                                         ft2232_end_state(cmd->cmd.end_state->end_state);
1142                                 break;
1143                         case JTAG_RESET:
1144                                 /* only send the maximum buffer size that FT2232C can handle */
1145                                 predicted_size = 3;
1146                                 if (ft2232_buffer_size + predicted_size + 1 > FT2232_BUFFER_SIZE)
1147                                 {
1148                                         if (ft2232_send_and_recv(first_unsent, cmd) != ERROR_OK)
1149                                                 retval = ERROR_JTAG_QUEUE_FAILED;
1150                                         require_send = 0;
1151                                         first_unsent = cmd;
1152                                 }
1153
1154                                 layout->reset(cmd->cmd.reset->trst, cmd->cmd.reset->srst);
1155                                 require_send = 1;
1156
1157 #ifdef _DEBUG_JTAG_IO_
1158                                 LOG_DEBUG("trst: %i, srst: %i", cmd->cmd.reset->trst, cmd->cmd.reset->srst);
1159 #endif
1160                                 break;
1161                         case JTAG_RUNTEST:
1162                                 /* only send the maximum buffer size that FT2232C can handle */
1163                                 predicted_size = 0;
1164                                 if (cur_state != TAP_RTI)
1165                                         predicted_size += 3;
1166                                 predicted_size += 3 * CEIL(cmd->cmd.runtest->num_cycles, 7);
1167                                 if ((cmd->cmd.runtest->end_state != -1) && (cmd->cmd.runtest->end_state != TAP_RTI))
1168                                         predicted_size += 3;
1169                                 if ((cmd->cmd.runtest->end_state == -1) && (end_state != TAP_RTI))
1170                                         predicted_size += 3;
1171                                 if (ft2232_buffer_size + predicted_size + 1 > FT2232_BUFFER_SIZE)
1172                                 {
1173                                         if (ft2232_send_and_recv(first_unsent, cmd) != ERROR_OK)
1174                                                 retval = ERROR_JTAG_QUEUE_FAILED;
1175                                         require_send = 0;
1176                                         first_unsent = cmd;
1177                                 }
1178                                 if (cur_state != TAP_RTI)
1179                                 {
1180                                         /* command "Clock Data to TMS/CS Pin (no Read)" */
1181                                         BUFFER_ADD = 0x4b;
1182                                         /* scan 7 bit */
1183                                         BUFFER_ADD = 0x6;
1184                                         /* TMS data bits */
1185                                         BUFFER_ADD = TAP_MOVE(cur_state, TAP_RTI);
1186                                         cur_state = TAP_RTI;
1187                                         require_send = 1;
1188                                 }
1189                                 i = cmd->cmd.runtest->num_cycles;
1190                                 while (i > 0)
1191                                 {
1192                                         /* command "Clock Data to TMS/CS Pin (no Read)" */
1193                                         BUFFER_ADD = 0x4b;
1194                                         /* scan 7 bit */
1195                                         BUFFER_ADD = (i > 7) ? 6 : (i - 1);
1196                                         /* TMS data bits */
1197                                         BUFFER_ADD = 0x0;
1198                                         cur_state = TAP_RTI;
1199                                         i -= (i > 7) ? 7 : i;
1200                                         /* LOG_DEBUG("added TMS scan (no read)"); */
1201                                 }
1202                                 if (cmd->cmd.runtest->end_state != -1)
1203                                         ft2232_end_state(cmd->cmd.runtest->end_state);
1204                                 if (cur_state != end_state)
1205                                 {
1206                                         /* command "Clock Data to TMS/CS Pin (no Read)" */
1207                                         BUFFER_ADD = 0x4b;
1208                                         /* scan 7 bit */
1209                                         BUFFER_ADD = 0x6;
1210                                         /* TMS data bits */
1211                                         BUFFER_ADD = TAP_MOVE(cur_state, end_state);
1212                                         cur_state = end_state;
1213                                         /* LOG_DEBUG("added TMS scan (no read)"); */
1214                                 }
1215                                 require_send = 1;
1216 #ifdef _DEBUG_JTAG_IO_
1217                                 LOG_DEBUG("runtest: %i, end in %i", cmd->cmd.runtest->num_cycles, end_state);
1218 #endif
1219                                 break;
1220                         case JTAG_STATEMOVE:
1221                                 /* only send the maximum buffer size that FT2232C can handle */
1222                                 predicted_size = 3;
1223                                 if (ft2232_buffer_size + predicted_size + 1 > FT2232_BUFFER_SIZE)
1224                                 {
1225                                         if (ft2232_send_and_recv(first_unsent, cmd) != ERROR_OK)
1226                                                 retval = ERROR_JTAG_QUEUE_FAILED;
1227                                         require_send = 0;
1228                                         first_unsent = cmd;
1229                                 }
1230                                 if (cmd->cmd.statemove->end_state != -1)
1231                                         ft2232_end_state(cmd->cmd.statemove->end_state);
1232                                 /* command "Clock Data to TMS/CS Pin (no Read)" */
1233                                 BUFFER_ADD = 0x4b;
1234                                 /* scan 7 bit */
1235                                 BUFFER_ADD = 0x6;
1236                                 /* TMS data bits */
1237                                 BUFFER_ADD = TAP_MOVE(cur_state, end_state);
1238                                 /* LOG_DEBUG("added TMS scan (no read)"); */
1239                                 cur_state = end_state;
1240                                 require_send = 1;
1241 #ifdef _DEBUG_JTAG_IO_
1242                                 LOG_DEBUG("statemove: %i", end_state);
1243 #endif
1244                                 break;
1245                         case JTAG_PATHMOVE:
1246                                 /* only send the maximum buffer size that FT2232C can handle */
1247                                 predicted_size = 3 * CEIL(cmd->cmd.pathmove->num_states, 7);
1248                                 if (ft2232_buffer_size + predicted_size + 1 > FT2232_BUFFER_SIZE)
1249                                 {
1250                                         if (ft2232_send_and_recv(first_unsent, cmd) != ERROR_OK)
1251                                                 retval = ERROR_JTAG_QUEUE_FAILED;
1252                                         require_send = 0;
1253                                         first_unsent = cmd;
1254                                 }
1255                                 ft2232_add_pathmove(cmd->cmd.pathmove);
1256                                 require_send = 1;
1257 #ifdef _DEBUG_JTAG_IO_
1258                                 LOG_DEBUG("pathmove: %i states, end in %i", cmd->cmd.pathmove->num_states, cmd->cmd.pathmove->path[cmd->cmd.pathmove->num_states - 1]);
1259 #endif
1260                                 break;
1261                         case JTAG_SCAN:
1262                                 scan_size = jtag_build_buffer(cmd->cmd.scan, &buffer);
1263                                 type = jtag_scan_type(cmd->cmd.scan);
1264                                 predicted_size = ft2232_predict_scan_out(scan_size, type);
1265                                 if ((predicted_size + 1) > FT2232_BUFFER_SIZE)
1266                                 {
1267                                         LOG_DEBUG("oversized ft2232 scan (predicted_size > FT2232_BUFFER_SIZE)");
1268                                         /* unsent commands before this */
1269                                         if (first_unsent != cmd)
1270                                                 if (ft2232_send_and_recv(first_unsent, cmd) != ERROR_OK)
1271                                                         retval = ERROR_JTAG_QUEUE_FAILED;
1272
1273                                         /* current command */
1274                                         if (cmd->cmd.scan->end_state != -1)
1275                                                 ft2232_end_state(cmd->cmd.scan->end_state);
1276                                         ft2232_large_scan(cmd->cmd.scan, type, buffer, scan_size);
1277                                         require_send = 0;
1278                                         first_unsent = cmd->next;
1279                                         if (buffer)
1280                                                 free(buffer);
1281                                         break;
1282                                 }
1283                                 else if (ft2232_buffer_size + predicted_size + 1 > FT2232_BUFFER_SIZE)
1284                                 {
1285                                         LOG_DEBUG("ft2232 buffer size reached, sending queued commands (first_unsent: %p, cmd: %p)", first_unsent, cmd);
1286                                         if (ft2232_send_and_recv(first_unsent, cmd) != ERROR_OK)
1287                                                 retval = ERROR_JTAG_QUEUE_FAILED;
1288                                         require_send = 0;
1289                                         first_unsent = cmd;
1290                                 }
1291                                 ft2232_expect_read += ft2232_predict_scan_in(scan_size, type);
1292                                 /* LOG_DEBUG("new read size: %i", ft2232_expect_read); */
1293                                 if (cmd->cmd.scan->end_state != -1)
1294                                         ft2232_end_state(cmd->cmd.scan->end_state);
1295                                 ft2232_add_scan(cmd->cmd.scan->ir_scan, type, buffer, scan_size);
1296                                 require_send = 1;
1297                                 if (buffer)
1298                                         free(buffer);
1299 #ifdef _DEBUG_JTAG_IO_
1300                                 LOG_DEBUG("%s scan, %i bit, end in %i", (cmd->cmd.scan->ir_scan) ? "IR" : "DR", scan_size, end_state);
1301 #endif
1302                                 break;
1303                         case JTAG_SLEEP:
1304                                 if (ft2232_send_and_recv(first_unsent, cmd) != ERROR_OK)
1305                                         retval = ERROR_JTAG_QUEUE_FAILED;
1306                                 first_unsent = cmd->next;
1307                                 jtag_sleep(cmd->cmd.sleep->us);
1308 #ifdef _DEBUG_JTAG_IO_
1309                                 LOG_DEBUG("sleep %i usec", cmd->cmd.sleep->us);
1310 #endif
1311                                 break;
1312                         default:
1313                                 LOG_ERROR("BUG: unknown JTAG command type encountered");
1314                                 exit(-1);
1315                 }
1316                 cmd = cmd->next;
1317         }
1318
1319         if (require_send > 0)
1320                 if (ft2232_send_and_recv(first_unsent, cmd) != ERROR_OK)
1321                         retval = ERROR_JTAG_QUEUE_FAILED;
1322
1323         return retval;
1324 }
1325
1326 #if BUILD_FT2232_FTD2XX == 1
1327 static int ft2232_init_ftd2xx(u16 vid, u16 pid, int more, int *try_more)
1328 {
1329         FT_STATUS status;
1330         DWORD openex_flags = 0;
1331         char *openex_string = NULL;
1332         u8 latency_timer;
1333
1334         LOG_DEBUG("'ft2232' interface using FTD2XX with '%s' layout (%4.4x:%4.4x)",
1335             ft2232_layout, vid, pid);
1336
1337 #if IS_WIN32 == 0
1338         /* Add non-standard Vid/Pid to the linux driver */
1339         if ((status = FT_SetVIDPID(vid, pid)) != FT_OK)
1340         {
1341                 LOG_WARNING("couldn't add %4.4x:%4.4x",
1342                     vid, pid);
1343         }
1344 #endif
1345
1346         if (ft2232_device_desc && ft2232_serial)
1347         {
1348                 LOG_WARNING("can't open by device description and serial number, giving precedence to serial");
1349                 ft2232_device_desc = NULL;
1350         }
1351
1352         if (ft2232_device_desc)
1353         {
1354                 openex_string = ft2232_device_desc;
1355                 openex_flags = FT_OPEN_BY_DESCRIPTION;
1356         }
1357         else if (ft2232_serial)
1358         {
1359                 openex_string = ft2232_serial;
1360                 openex_flags = FT_OPEN_BY_SERIAL_NUMBER;
1361         }
1362         else
1363         {
1364                 LOG_ERROR("neither device description nor serial number specified");
1365                 LOG_ERROR("please add \"ft2232_device_desc <string>\" or \"ft2232_serial <string>\" to your .cfg file");
1366
1367                 return ERROR_JTAG_INIT_FAILED;
1368         }
1369
1370         if ((status = FT_OpenEx(openex_string, openex_flags, &ftdih)) != FT_OK)
1371         {
1372                 DWORD num_devices;
1373
1374                 if (more) {
1375                         LOG_WARNING("unable to open ftdi device (trying more): %lu",
1376                             status);
1377                         *try_more = 1;
1378                         return ERROR_JTAG_INIT_FAILED;
1379                 }
1380                 LOG_ERROR("unable to open ftdi device: %lu", status);
1381                 status = FT_ListDevices(&num_devices, NULL, FT_LIST_NUMBER_ONLY);
1382                 if (status == FT_OK)
1383                 {
1384                         char **desc_array = malloc(sizeof(char*) * (num_devices + 1));
1385                         int i;
1386
1387                         for (i = 0; i < num_devices; i++)
1388                                 desc_array[i] = malloc(64);
1389                         desc_array[num_devices] = NULL;
1390
1391                         status = FT_ListDevices(desc_array, &num_devices, FT_LIST_ALL | openex_flags);
1392
1393                         if (status == FT_OK)
1394                         {
1395                                 LOG_ERROR("ListDevices: %lu\n", num_devices);
1396                                 for (i = 0; i < num_devices; i++)
1397                                         LOG_ERROR("%i: %s", i, desc_array[i]);
1398                         }
1399
1400                         for (i = 0; i < num_devices; i++)
1401                                 free(desc_array[i]);
1402                         free(desc_array);
1403                 }
1404                 else
1405                 {
1406                         LOG_ERROR("ListDevices: NONE\n");
1407                 }
1408                 return ERROR_JTAG_INIT_FAILED;
1409         }
1410
1411         if ((status = FT_SetLatencyTimer(ftdih, ft2232_latency)) != FT_OK)
1412         {
1413                 LOG_ERROR("unable to set latency timer: %lu", status);
1414                 return ERROR_JTAG_INIT_FAILED;
1415         }
1416
1417         if ((status = FT_GetLatencyTimer(ftdih, &latency_timer)) != FT_OK)
1418         {
1419                 LOG_ERROR("unable to get latency timer: %lu", status);
1420                 return ERROR_JTAG_INIT_FAILED;
1421         }
1422         else
1423         {
1424                 LOG_DEBUG("current latency timer: %i", latency_timer);
1425         }
1426
1427         if ((status = FT_SetTimeouts(ftdih, 5000, 5000)) != FT_OK)
1428         {
1429                 LOG_ERROR("unable to set timeouts: %lu", status);
1430                 return ERROR_JTAG_INIT_FAILED;
1431         }
1432
1433         if ((status = FT_SetBitMode(ftdih, 0x0b, 2)) != FT_OK)
1434         {
1435                 LOG_ERROR("unable to enable bit i/o mode: %lu", status);
1436                 return ERROR_JTAG_INIT_FAILED;
1437         }
1438
1439         return ERROR_OK;
1440 }
1441
1442 static int ft2232_purge_ftd2xx(void)
1443 {
1444         FT_STATUS status;
1445
1446         if ((status = FT_Purge(ftdih, FT_PURGE_RX | FT_PURGE_TX)) != FT_OK)
1447         {
1448                 LOG_ERROR("error purging ftd2xx device: %lu", status);
1449                 return ERROR_JTAG_INIT_FAILED;
1450         }
1451
1452         return ERROR_OK;
1453 }
1454 #endif /* BUILD_FT2232_FTD2XX == 1 */
1455
1456 #if BUILD_FT2232_LIBFTDI == 1
1457 static int ft2232_init_libftdi(u16 vid, u16 pid, int more, int *try_more)
1458 {
1459         u8 latency_timer;
1460
1461         LOG_DEBUG("'ft2232' interface using libftdi with '%s' layout (%4.4x:%4.4x)",
1462             ft2232_layout, vid, pid);
1463
1464         if (ftdi_init(&ftdic) < 0)
1465                 return ERROR_JTAG_INIT_FAILED;
1466
1467         /* context, vendor id, product id */
1468         if (ftdi_usb_open_desc(&ftdic, vid, pid, ft2232_device_desc,
1469             ft2232_serial) < 0) {
1470                 if (more)
1471                         LOG_WARNING("unable to open ftdi device (trying more): %s",
1472                              ftdic.error_str);
1473                 else
1474                         LOG_ERROR("unable to open ftdi device: %s", ftdic.error_str);
1475                 *try_more = 1;
1476                 return ERROR_JTAG_INIT_FAILED;
1477         }
1478
1479         if (ftdi_set_interface(&ftdic, INTERFACE_A) < 0)
1480         {
1481                 LOG_ERROR("unable to select FT2232 channel A: %s", ftdic.error_str);
1482                 return ERROR_JTAG_INIT_FAILED;
1483         }
1484
1485         if (ftdi_usb_reset(&ftdic) < 0)
1486         {
1487                 LOG_ERROR("unable to reset ftdi device");
1488                 return ERROR_JTAG_INIT_FAILED;
1489         }
1490
1491         if (ftdi_set_latency_timer(&ftdic, ft2232_latency) < 0)
1492         {
1493                 LOG_ERROR("unable to set latency timer");
1494                 return ERROR_JTAG_INIT_FAILED;
1495         }
1496
1497         if (ftdi_get_latency_timer(&ftdic, &latency_timer) < 0)
1498         {
1499                 LOG_ERROR("unable to get latency timer");
1500                 return ERROR_JTAG_INIT_FAILED;
1501         }
1502         else
1503         {
1504                 LOG_DEBUG("current latency timer: %i", latency_timer);
1505         }
1506
1507         ftdi_set_bitmode(&ftdic, 0x0b, 2); /* ctx, JTAG I/O mask */
1508
1509         return ERROR_OK;
1510 }
1511
1512 static int ft2232_purge_libftdi(void)
1513 {
1514         if (ftdi_usb_purge_buffers(&ftdic) < 0)
1515         {
1516                 LOG_ERROR("ftdi_purge_buffers: %s", ftdic.error_str);
1517                 return ERROR_JTAG_INIT_FAILED;
1518         }
1519
1520         return ERROR_OK;
1521 }
1522 #endif /* BUILD_FT2232_LIBFTDI == 1 */
1523
1524 int ft2232_init(void)
1525 {
1526         u8 buf[1];
1527         int retval;
1528         u32 bytes_written;
1529         ft2232_layout_t *cur_layout = ft2232_layouts;
1530         int i;
1531
1532         if ((ft2232_layout == NULL) || (ft2232_layout[0] == 0))
1533         {
1534                 ft2232_layout = "usbjtag";
1535                 LOG_WARNING("No ft2232 layout specified, using default 'usbjtag'");
1536         }
1537
1538         while (cur_layout->name)
1539         {
1540                 if (strcmp(cur_layout->name, ft2232_layout) == 0)
1541                 {
1542                         layout = cur_layout;
1543                         break;
1544                 }
1545                 cur_layout++;
1546         }
1547
1548         if (!layout)
1549         {
1550                 LOG_ERROR("No matching layout found for %s", ft2232_layout);
1551                 return ERROR_JTAG_INIT_FAILED;
1552         }
1553
1554         for (i = 0; 1; i++) {
1555                 /*
1556                  * "more indicates that there are more IDs to try, so we should
1557                  * not print an error for an ID mismatch (but for anything
1558                  * else, we should).
1559                  *
1560                  * try_more indicates that the error code returned indicates an
1561                  * ID mismatch (and nothing else) and that we should proceeed
1562                  * with the next ID pair.
1563                  */
1564                 int more = ft2232_vid[i+1] || ft2232_pid[i+1];
1565                 int try_more = 0;
1566
1567 #if BUILD_FT2232_FTD2XX == 1
1568                 retval = ft2232_init_ftd2xx(ft2232_vid[i], ft2232_pid[i],
1569                     more, &try_more);
1570 #elif BUILD_FT2232_LIBFTDI == 1
1571                 retval = ft2232_init_libftdi(ft2232_vid[i], ft2232_pid[i],
1572                     more, &try_more);
1573 #endif
1574                 if (retval >= 0)
1575                         break;
1576                 if (!more || !try_more)
1577                         return retval;
1578         }
1579
1580         ft2232_buffer_size = 0;
1581         ft2232_buffer = malloc(FT2232_BUFFER_SIZE);
1582
1583         if (layout->init() != ERROR_OK)
1584                 return ERROR_JTAG_INIT_FAILED;
1585
1586         ft2232_speed(jtag_speed);
1587
1588         buf[0] = 0x85; /* Disconnect TDI/DO to TDO/DI for Loopback */
1589         if (((retval = ft2232_write(buf, 1, &bytes_written)) != ERROR_OK) || (bytes_written != 1))
1590         {
1591                 LOG_ERROR("couldn't write to FT2232 to disable loopback");
1592                 return ERROR_JTAG_INIT_FAILED;
1593         }
1594
1595 #if BUILD_FT2232_FTD2XX == 1
1596         return ft2232_purge_ftd2xx();
1597 #elif BUILD_FT2232_LIBFTDI == 1
1598         return ft2232_purge_libftdi();
1599 #endif
1600
1601         return ERROR_OK;
1602 }
1603
1604 int usbjtag_init(void)
1605 {
1606         u8 buf[3];
1607         u32 bytes_written;
1608
1609         low_output = 0x08;
1610         low_direction = 0x0b;
1611
1612         if (strcmp(ft2232_layout, "usbjtag") == 0)
1613         {
1614                 nTRST = 0x10;
1615                 nTRSTnOE = 0x10;
1616                 nSRST = 0x40;
1617                 nSRSTnOE = 0x40;
1618         }
1619         else if (strcmp(ft2232_layout, "signalyzer") == 0)
1620         {
1621                 nTRST = 0x10;
1622                 nTRSTnOE = 0x10;
1623                 nSRST = 0x20;
1624                 nSRSTnOE = 0x20;
1625         }
1626         else if (strcmp(ft2232_layout, "evb_lm3s811") == 0)
1627         {
1628                 nTRST = 0x0;
1629                 nTRSTnOE = 0x00;
1630                 nSRST = 0x20;
1631                 nSRSTnOE = 0x20;
1632                 low_output = 0x88;
1633                 low_direction = 0x8b;
1634         }
1635         else
1636         {
1637                 LOG_ERROR("BUG: usbjtag_init called for unknown layout '%s'", ft2232_layout);
1638                 return ERROR_JTAG_INIT_FAILED;
1639         }
1640
1641         if (jtag_reset_config & RESET_TRST_OPEN_DRAIN)
1642         {
1643                 low_direction &= ~nTRSTnOE; /* nTRST input */
1644                 low_output &= ~nTRST; /* nTRST = 0 */
1645         }
1646         else
1647         {
1648                 low_direction |= nTRSTnOE; /* nTRST output */
1649                 low_output |= nTRST; /* nTRST = 1 */
1650         }
1651
1652         if (jtag_reset_config & RESET_SRST_PUSH_PULL)
1653         {
1654                 low_direction |= nSRSTnOE; /* nSRST output */
1655                 low_output |= nSRST; /* nSRST = 1 */
1656         }
1657         else
1658         {
1659                 low_direction &= ~nSRSTnOE; /* nSRST input */
1660                 low_output &= ~nSRST; /* nSRST = 0 */
1661         }
1662
1663         /* initialize low byte for jtag */
1664         buf[0] = 0x80; /* command "set data bits low byte" */
1665         buf[1] = low_output; /* value (TMS=1,TCK=0, TDI=0, xRST high) */
1666         buf[2] = low_direction; /* dir (output=1), TCK/TDI/TMS=out, TDO=in */
1667         LOG_DEBUG("%2.2x %2.2x %2.2x", buf[0], buf[1], buf[2]);
1668
1669         if (((ft2232_write(buf, 3, &bytes_written)) != ERROR_OK) || (bytes_written != 3))
1670         {
1671                 LOG_ERROR("couldn't initialize FT2232 with 'USBJTAG' layout");
1672                 return ERROR_JTAG_INIT_FAILED;
1673         }
1674
1675         return ERROR_OK;
1676 }
1677
1678 int jtagkey_init(void)
1679 {
1680         u8 buf[3];
1681         u32 bytes_written;
1682
1683         low_output = 0x08;
1684         low_direction = 0x1b;
1685
1686         /* initialize low byte for jtag */
1687         buf[0] = 0x80; /* command "set data bits low byte" */
1688         buf[1] = low_output; /* value (TMS=1,TCK=0, TDI=0, nOE=0) */
1689         buf[2] = low_direction; /* dir (output=1), TCK/TDI/TMS=out, TDO=in, nOE=out */
1690         LOG_DEBUG("%2.2x %2.2x %2.2x", buf[0], buf[1], buf[2]);
1691
1692         if (((ft2232_write(buf, 3, &bytes_written)) != ERROR_OK) || (bytes_written != 3))
1693         {
1694                 LOG_ERROR("couldn't initialize FT2232 with 'JTAGkey' layout");
1695                 return ERROR_JTAG_INIT_FAILED;
1696         }
1697
1698         if (strcmp(layout->name, "jtagkey") == 0)
1699         {
1700                 nTRST = 0x01;
1701                 nTRSTnOE = 0x4;
1702                 nSRST = 0x02;
1703                 nSRSTnOE = 0x08;
1704         }
1705         else if ((strcmp(layout->name, "jtagkey_prototype_v1") == 0) ||
1706                 (strcmp(layout->name, "oocdlink") == 0))
1707         {
1708                 nTRST = 0x02;
1709                 nTRSTnOE = 0x1;
1710                 nSRST = 0x08;
1711                 nSRSTnOE = 0x04;
1712         }
1713         else
1714         {
1715                 LOG_ERROR("BUG: jtagkey_init called for non jtagkey layout");
1716                 exit(-1);
1717         }
1718
1719         high_output = 0x0;
1720         high_direction = 0x0f;
1721
1722         if (jtag_reset_config & RESET_TRST_OPEN_DRAIN)
1723         {
1724                 high_output |= nTRSTnOE;
1725                 high_output &= ~nTRST;
1726         }
1727         else
1728         {
1729                 high_output &= ~nTRSTnOE;
1730                 high_output |= nTRST;
1731         }
1732
1733         if (jtag_reset_config & RESET_SRST_PUSH_PULL)
1734         {
1735                 high_output &= ~nSRSTnOE;
1736                 high_output |= nSRST;
1737         }
1738         else
1739         {
1740                 high_output |= nSRSTnOE;
1741                 high_output &= ~nSRST;
1742         }
1743
1744         /* initialize high port */
1745         buf[0] = 0x82; /* command "set data bits high byte" */
1746         buf[1] = high_output; /* value */
1747         buf[2] = high_direction;   /* all outputs (xRST and xRSTnOE) */
1748         LOG_DEBUG("%2.2x %2.2x %2.2x", buf[0], buf[1], buf[2]);
1749
1750         if (((ft2232_write(buf, 3, &bytes_written)) != ERROR_OK) || (bytes_written != 3))
1751         {
1752                 LOG_ERROR("couldn't initialize FT2232 with 'JTAGkey' layout");
1753                 return ERROR_JTAG_INIT_FAILED;
1754         }
1755
1756         return ERROR_OK;
1757 }
1758
1759 int olimex_jtag_init(void)
1760 {
1761         u8 buf[3];
1762         u32 bytes_written;
1763
1764         low_output = 0x08;
1765         low_direction = 0x1b;
1766
1767         /* initialize low byte for jtag */
1768         buf[0] = 0x80; /* command "set data bits low byte" */
1769         buf[1] = low_output; /* value (TMS=1,TCK=0, TDI=0, nOE=0) */
1770         buf[2] = low_direction; /* dir (output=1), TCK/TDI/TMS=out, TDO=in, nOE=out */
1771         LOG_DEBUG("%2.2x %2.2x %2.2x", buf[0], buf[1], buf[2]);
1772
1773         if (((ft2232_write(buf, 3, &bytes_written)) != ERROR_OK) || (bytes_written != 3))
1774         {
1775                 LOG_ERROR("couldn't initialize FT2232 with 'JTAGkey' layout");
1776                 return ERROR_JTAG_INIT_FAILED;
1777         }
1778
1779         nTRST = 0x01;
1780         nTRSTnOE = 0x4;
1781         nSRST = 0x02;
1782         nSRSTnOE = 0x00; /* no output enable for nSRST */
1783
1784         high_output = 0x0;
1785         high_direction = 0x0f;
1786
1787         if (jtag_reset_config & RESET_TRST_OPEN_DRAIN)
1788         {
1789                 high_output |= nTRSTnOE;
1790                 high_output &= ~nTRST;
1791         }
1792         else
1793         {
1794                 high_output &= ~nTRSTnOE;
1795                 high_output |= nTRST;
1796         }
1797
1798         if (jtag_reset_config & RESET_SRST_PUSH_PULL)
1799         {
1800                 LOG_ERROR("can't set nSRST to push-pull on the Olimex ARM-USB-OCD");
1801         }
1802         else
1803         {
1804                 high_output &= ~nSRST;
1805         }
1806
1807         /* turn red LED on */
1808         high_output |= 0x08;
1809
1810         /* initialize high port */
1811         buf[0] = 0x82; /* command "set data bits high byte" */
1812         buf[1] = high_output; /* value */
1813         buf[2] = high_direction;   /* all outputs (xRST and xRSTnOE) */
1814         LOG_DEBUG("%2.2x %2.2x %2.2x", buf[0], buf[1], buf[2]);
1815
1816         if (((ft2232_write(buf, 3, &bytes_written)) != ERROR_OK) || (bytes_written != 3))
1817         {
1818                 LOG_ERROR("couldn't initialize FT2232 with 'JTAGkey' layout");
1819                 return ERROR_JTAG_INIT_FAILED;
1820         }
1821
1822         return ERROR_OK;
1823 }
1824
1825 int flyswatter_init(void)
1826 {
1827         u8 buf[3];
1828         u32 bytes_written;
1829
1830         low_output = 0x18;
1831         low_direction = 0xfb;
1832
1833         /* initialize low byte for jtag */
1834         buf[0] = 0x80; /* command "set data bits low byte" */
1835         buf[1] = low_output; /* value (TMS=1,TCK=0, TDI=0, nOE=0) */
1836         buf[2] = low_direction; /* dir (output=1), TCK/TDI/TMS=out, TDO=in, nOE[12]=out, n[ST]srst=out */
1837         LOG_DEBUG("%2.2x %2.2x %2.2x", buf[0], buf[1], buf[2]);
1838
1839         if (((ft2232_write(buf, 3, &bytes_written)) != ERROR_OK) || (bytes_written != 3))
1840         {
1841                 LOG_ERROR("couldn't initialize FT2232 with 'flyswatter' layout");
1842                 return ERROR_JTAG_INIT_FAILED;
1843         }
1844
1845         nTRST = 0x10;
1846         nTRSTnOE = 0x0; /* not output enable for nTRST */
1847         nSRST = 0x20;
1848         nSRSTnOE = 0x00; /* no output enable for nSRST */
1849
1850         high_output = 0x00;
1851         high_direction = 0x0c;
1852
1853         /* turn red LED1 on, LED2 off */
1854         high_output |= 0x08;
1855
1856         /* initialize high port */
1857         buf[0] = 0x82; /* command "set data bits high byte" */
1858         buf[1] = high_output; /* value */
1859         buf[2] = high_direction;   /* all outputs (xRST and xRSTnOE) */
1860         LOG_DEBUG("%2.2x %2.2x %2.2x", buf[0], buf[1], buf[2]);
1861
1862         if (((ft2232_write(buf, 3, &bytes_written)) != ERROR_OK) || (bytes_written != 3))
1863         {
1864                 LOG_ERROR("couldn't initialize FT2232 with 'flyswatter' layout");
1865                 return ERROR_JTAG_INIT_FAILED;
1866         }
1867
1868         return ERROR_OK;
1869 }
1870
1871 int turtle_init(void)
1872 {
1873         u8 buf[3];
1874         u32 bytes_written;
1875
1876         low_output = 0x08;
1877         low_direction = 0x5b;
1878
1879         /* initialize low byte for jtag */
1880         buf[0] = 0x80; /* command "set data bits low byte" */
1881         buf[1] = low_output; /* value (TMS=1,TCK=0, TDI=0, nOE=0) */
1882         buf[2] = low_direction; /* dir (output=1), TCK/TDI/TMS=out, TDO=in, nOE=out */
1883         LOG_DEBUG("%2.2x %2.2x %2.2x", buf[0], buf[1], buf[2]);
1884
1885         if (((ft2232_write(buf, 3, &bytes_written)) != ERROR_OK) || (bytes_written != 3))
1886         {
1887                 LOG_ERROR("couldn't initialize FT2232 with 'turtelizer2' layout");
1888                 return ERROR_JTAG_INIT_FAILED;
1889         }
1890
1891         nSRST = 0x40;
1892
1893         high_output = 0x00;
1894         high_direction = 0x0C;
1895
1896         /* initialize high port */
1897         buf[0] = 0x82; /* command "set data bits high byte" */
1898         buf[1] = high_output;
1899         buf[2] = high_direction;
1900         LOG_DEBUG("%2.2x %2.2x %2.2x", buf[0], buf[1], buf[2]);
1901
1902         if (((ft2232_write(buf, 3, &bytes_written)) != ERROR_OK) || (bytes_written != 3))
1903         {
1904                 LOG_ERROR("couldn't initialize FT2232 with 'turtelizer2' layout");
1905                 return ERROR_JTAG_INIT_FAILED;
1906         }
1907
1908         return ERROR_OK;
1909 }
1910
1911 int comstick_init(void)
1912 {
1913         u8 buf[3];
1914         u32 bytes_written;
1915
1916         low_output = 0x08;
1917         low_direction = 0x0b;
1918
1919         /* initialize low byte for jtag */
1920         buf[0] = 0x80; /* command "set data bits low byte" */
1921         buf[1] = low_output; /* value (TMS=1,TCK=0, TDI=0, nOE=0) */
1922         buf[2] = low_direction; /* dir (output=1), TCK/TDI/TMS=out, TDO=in, nOE=out */
1923         LOG_DEBUG("%2.2x %2.2x %2.2x", buf[0], buf[1], buf[2]);
1924
1925         if (((ft2232_write(buf, 3, &bytes_written)) != ERROR_OK) || (bytes_written != 3))
1926         {
1927                 LOG_ERROR("couldn't initialize FT2232 with 'comstick' layout");
1928                 return ERROR_JTAG_INIT_FAILED;
1929         }
1930
1931         nTRST = 0x01;
1932         nTRSTnOE = 0x00; /* no output enable for nTRST */
1933         nSRST = 0x02;
1934         nSRSTnOE = 0x00; /* no output enable for nSRST */
1935
1936         high_output = 0x03;
1937         high_direction = 0x03;
1938
1939         /* initialize high port */
1940         buf[0] = 0x82; /* command "set data bits high byte" */
1941         buf[1] = high_output;
1942         buf[2] = high_direction;
1943         LOG_DEBUG("%2.2x %2.2x %2.2x", buf[0], buf[1], buf[2]);
1944
1945         if (((ft2232_write(buf, 3, &bytes_written)) != ERROR_OK) || (bytes_written != 3))
1946         {
1947                 LOG_ERROR("couldn't initialize FT2232 with 'comstick' layout");
1948                 return ERROR_JTAG_INIT_FAILED;
1949         }
1950
1951         return ERROR_OK;
1952 }
1953
1954 int stm32stick_init(void)
1955 {
1956         u8 buf[3];
1957         u32 bytes_written;
1958
1959         low_output = 0x88;
1960         low_direction = 0x8b;
1961
1962         /* initialize low byte for jtag */
1963         buf[0] = 0x80; /* command "set data bits low byte" */
1964         buf[1] = low_output; /* value (TMS=1,TCK=0, TDI=0, nOE=0) */
1965         buf[2] = low_direction; /* dir (output=1), TCK/TDI/TMS=out, TDO=in, nOE=out */
1966         LOG_DEBUG("%2.2x %2.2x %2.2x", buf[0], buf[1], buf[2]);
1967
1968         if (((ft2232_write(buf, 3, &bytes_written)) != ERROR_OK) || (bytes_written != 3))
1969         {
1970                 LOG_ERROR("couldn't initialize FT2232 with 'stm32stick' layout");
1971                 return ERROR_JTAG_INIT_FAILED;
1972         }
1973
1974         nTRST = 0x01;
1975         nTRSTnOE = 0x00; /* no output enable for nTRST */
1976         nSRST = 0x80;
1977         nSRSTnOE = 0x00; /* no output enable for nSRST */
1978
1979         high_output = 0x01;
1980         high_direction = 0x03;
1981
1982         /* initialize high port */
1983         buf[0] = 0x82; /* command "set data bits high byte" */
1984         buf[1] = high_output;
1985         buf[2] = high_direction;
1986         LOG_DEBUG("%2.2x %2.2x %2.2x", buf[0], buf[1], buf[2]);
1987
1988         if (((ft2232_write(buf, 3, &bytes_written)) != ERROR_OK) || (bytes_written != 3))
1989         {
1990                 LOG_ERROR("couldn't initialize FT2232 with 'stm32stick' layout");
1991                 return ERROR_JTAG_INIT_FAILED;
1992         }
1993
1994         return ERROR_OK;
1995 }
1996
1997 void olimex_jtag_blink(void)
1998 {
1999         /* Olimex ARM-USB-OCD has a LED connected to ACBUS3
2000          * ACBUS3 is bit 3 of the GPIOH port
2001          */
2002         if (high_output & 0x08)
2003         {
2004                 /* set port pin high */
2005                 high_output &= 0x07;
2006         }
2007         else
2008         {
2009                 /* set port pin low */
2010                 high_output |= 0x08;
2011         }
2012
2013         BUFFER_ADD = 0x82;
2014         BUFFER_ADD = high_output;
2015         BUFFER_ADD = high_direction;
2016 }
2017
2018 void turtle_jtag_blink(void)
2019 {
2020         /*
2021    * Turtelizer2 has two LEDs connected to ACBUS2 and ACBUS3
2022          */
2023         if (high_output & 0x08)
2024         {
2025                 high_output = 0x04;
2026         }
2027         else
2028         {
2029                 high_output = 0x08;
2030         }
2031
2032         BUFFER_ADD = 0x82;
2033         BUFFER_ADD = high_output;
2034         BUFFER_ADD = high_direction;
2035 }
2036
2037
2038 int ft2232_quit(void)
2039 {
2040 #if BUILD_FT2232_FTD2XX == 1
2041         FT_STATUS status;
2042
2043         status = FT_Close(ftdih);
2044 #elif BUILD_FT2232_LIBFTDI == 1
2045         ftdi_disable_bitbang(&ftdic);
2046
2047         ftdi_usb_close(&ftdic);
2048
2049         ftdi_deinit(&ftdic);
2050 #endif
2051
2052         free(ft2232_buffer);
2053         ft2232_buffer = NULL;
2054
2055         return ERROR_OK;
2056 }
2057
2058 int ft2232_handle_device_desc_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2059 {
2060         if (argc == 1)
2061         {
2062                 ft2232_device_desc = strdup(args[0]);
2063         }
2064         else
2065         {
2066                 LOG_ERROR("expected exactly one argument to ft2232_device_desc <description>");
2067         }
2068
2069         return ERROR_OK;
2070 }
2071
2072 int ft2232_handle_serial_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2073 {
2074         if (argc == 1)
2075         {
2076                 ft2232_serial = strdup(args[0]);
2077         }
2078         else
2079         {
2080                 LOG_ERROR("expected exactly one argument to ft2232_serial <serial-number>");
2081         }
2082
2083         return ERROR_OK;
2084 }
2085
2086 int ft2232_handle_layout_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2087 {
2088         if (argc == 0)
2089                 return ERROR_OK;
2090
2091         ft2232_layout = malloc(strlen(args[0]) + 1);
2092         strcpy(ft2232_layout, args[0]);
2093
2094         return ERROR_OK;
2095 }
2096
2097 int ft2232_handle_vid_pid_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2098 {
2099         int i;
2100
2101         if (argc > MAX_USB_IDS*2) {
2102                 LOG_WARNING("ignoring extra IDs in ft2232_vid_pid "
2103                     "(maximum is %d pairs)", MAX_USB_IDS);
2104                 argc = MAX_USB_IDS*2;
2105         }
2106         if (argc < 2 || (argc & 1))
2107         {
2108                 LOG_WARNING("incomplete ft2232_vid_pid configuration directive");
2109                 if (argc < 2)
2110                         return ERROR_OK;
2111         }
2112
2113         for (i = 0; i+1 < argc; i += 2) {
2114                 ft2232_vid[i >> 1] = strtol(args[i], NULL, 0);
2115                 ft2232_pid[i >> 1] = strtol(args[i+1], NULL, 0);
2116         }
2117         /*
2118          * Explicitly terminate, in case there are multiples instances of
2119          * ft2232_vid_pid.
2120          */
2121         ft2232_vid[i >> 1] = ft2232_pid[i >> 1] = 0;
2122
2123         return ERROR_OK;
2124 }
2125
2126 int ft2232_handle_latency_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2127 {
2128         if (argc == 1)
2129         {
2130                 ft2232_latency = atoi(args[0]);
2131         }
2132         else
2133         {
2134                 LOG_ERROR("expected exactly one argument to ft2232_latency <ms>");
2135         }
2136
2137         return ERROR_OK;
2138 }
2139
2140