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 #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 /* enable this to debug io latency
  50  */
  51 #if 0
  52 #define _DEBUG_USB_IO_
  53 #endif
  54
  55 /* enable this to debug communication
  56  */
  57 #if 0
  58 #define _DEBUG_USB_COMMS_
  59 #endif
  60
  61 int ft2232_execute_queue(void);
  62
  63 int ft2232_speed(int speed);
  64 int ft2232_speed_div(int speed, int *khz);
  65 int ft2232_khz(int khz, int *jtag_speed);
  66 int ft2232_register_commands(struct command_context_s *cmd_ctx);
  67 int ft2232_init(void);
  68 int ft2232_quit(void);
  69
  70 int ft2232_handle_device_desc_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  71 int ft2232_handle_serial_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  72 int ft2232_handle_layout_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  73 int ft2232_handle_vid_pid_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  74 int ft2232_handle_latency_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  75
  76 char *ft2232_device_desc = NULL;
  77 char *ft2232_serial = NULL;
  78 char *ft2232_layout = NULL;
  79 unsigned char ft2232_latency = 2;
  80
  81 #define MAX_USB_IDS     8
  82 /* vid = pid = 0 marks the end of the list */
  83 static u16 ft2232_vid[MAX_USB_IDS+1] = { 0x0403, 0 };
  84 static u16 ft2232_pid[MAX_USB_IDS+1] = { 0x6010, 0 };
  85
  86 typedef struct ft2232_layout_s
  87 {
  88         char* name;
  89         int(*init)(void);
  90         void(*reset)(int trst, int srst);
  91         void(*blink)(void);
  92 } ft2232_layout_t;
  93
  94 /* init procedures for supported layouts */
  95 int usbjtag_init(void);
  96 int jtagkey_init(void);
  97 int olimex_jtag_init(void);
  98 int flyswatter_init(void);
  99 int turtle_init(void);
 100 int comstick_init(void);
 101 int stm32stick_init(void);
 102
 103 /* reset procedures for supported layouts */
 104 void usbjtag_reset(int trst, int srst);
 105 void jtagkey_reset(int trst, int srst);
 106 void olimex_jtag_reset(int trst, int srst);
 107 void flyswatter_reset(int trst, int srst);
 108 void turtle_reset(int trst, int srst);
 109 void comstick_reset(int trst, int srst);
 110 void stm32stick_reset(int trst, int srst);
 111
 112 /* blink procedures for layouts that support a blinking led */
 113 void olimex_jtag_blink(void);
 114 void turtle_jtag_blink(void);
 115
 116 ft2232_layout_t ft2232_layouts[] =
 117 {
 118         {"usbjtag", usbjtag_init, usbjtag_reset, NULL},
 119         {"jtagkey", jtagkey_init, jtagkey_reset, NULL},
 120         {"jtagkey_prototype_v1", jtagkey_init, jtagkey_reset, NULL},
 121         {"oocdlink", jtagkey_init, jtagkey_reset, NULL},
 122         {"signalyzer", usbjtag_init, usbjtag_reset, NULL},
 123         {"evb_lm3s811", usbjtag_init, usbjtag_reset, NULL},
 124         {"olimex-jtag", olimex_jtag_init, olimex_jtag_reset, olimex_jtag_blink},
 125         {"flyswatter", flyswatter_init, flyswatter_reset, NULL},
 126         {"turtelizer2", turtle_init, turtle_reset, turtle_jtag_blink},
 127         {"comstick", comstick_init, comstick_reset, NULL},
 128         {"stm32stick", stm32stick_init, stm32stick_reset, NULL},
 129         {NULL, NULL, NULL},
 130 };
 131
 132 static u8 nTRST, nTRSTnOE, nSRST, nSRSTnOE;
 133
 134 static ft2232_layout_t *layout;
 135 static u8 low_output = 0x0;
 136 static u8 low_direction = 0x0;
 137 static u8 high_output = 0x0;
 138 static u8 high_direction = 0x0;
 139
 140 #if BUILD_FT2232_FTD2XX == 1
 141 static FT_HANDLE ftdih = NULL;
 142 #elif BUILD_FT2232_LIBFTDI == 1
 143 static struct ftdi_context ftdic;
 144 #endif
 145
 146 static u8 *ft2232_buffer = NULL;
 147 static int ft2232_buffer_size = 0;
 148 static int ft2232_read_pointer = 0;
 149 static int ft2232_expect_read = 0;
 150 #define FT2232_BUFFER_SIZE      131072
 151 #define BUFFER_ADD ft2232_buffer[ft2232_buffer_size++]
 152 #define BUFFER_READ ft2232_buffer[ft2232_read_pointer++]
 153
 154 jtag_interface_t ft2232_interface =
 155 {
 156         .name = "ft2232",
 157         .execute_queue = ft2232_execute_queue,
 158         .speed = ft2232_speed,
 159         .speed_div = ft2232_speed_div,
 160         .khz = ft2232_khz,
 161         .register_commands = ft2232_register_commands,
 162         .init = ft2232_init,
 163         .quit = ft2232_quit,
 164 };
 165
 166 int ft2232_write(u8 *buf, int size, u32* bytes_written)
 167 {
 168 #if BUILD_FT2232_FTD2XX == 1
 169         FT_STATUS status;
 170         DWORD dw_bytes_written;
 171         if ((status = FT_Write(ftdih, buf, size, &dw_bytes_written)) != FT_OK)
 172         {
 173                 *bytes_written = dw_bytes_written;
 174                 LOG_ERROR("FT_Write returned: %lu", status);
 175                 return ERROR_JTAG_DEVICE_ERROR;
 176         }
 177         else
 178         {
 179                 *bytes_written = dw_bytes_written;
 180                 return ERROR_OK;
 181         }
 182 #elif BUILD_FT2232_LIBFTDI == 1
 183         int retval;
 184         if ((retval = ftdi_write_data(&ftdic, buf, size)) < 0)
 185         {
 186                 *bytes_written = 0;
 187                 LOG_ERROR("ftdi_write_data: %s", ftdi_get_error_string(&ftdic));
 188                 return ERROR_JTAG_DEVICE_ERROR;
 189         }
 190         else
 191         {
 192                 *bytes_written = retval;
 193                 return ERROR_OK;
 194         }
 195 #endif
 196 }
 197
 198 int ft2232_read(u8* buf, int size, u32* bytes_read)
 199 {
 200 #if BUILD_FT2232_FTD2XX == 1
 201         DWORD dw_bytes_read;
 202         FT_STATUS status;
 203         int timeout = 5;
 204         *bytes_read = 0;
 205
 206         while ((*bytes_read < size) && timeout--)
 207         {
 208                 if ((status = FT_Read(ftdih, buf + *bytes_read, size -
 209                         *bytes_read, &dw_bytes_read)) != FT_OK)
 210                 {
 211                         *bytes_read = 0;
 212                         LOG_ERROR("FT_Read returned: %lu", status);
 213                         return ERROR_JTAG_DEVICE_ERROR;
 214                 }
 215                 *bytes_read += dw_bytes_read;
 216         }
 217 #elif BUILD_FT2232_LIBFTDI == 1
 218         int retval;
 219         int timeout = 100;
 220         *bytes_read = 0;
 221
 222         while ((*bytes_read < size) && timeout--)
 223         {
 224                 if ((retval = ftdi_read_data(&ftdic, buf + *bytes_read, size - *bytes_read)) < 0)
 225                 {
 226                         *bytes_read = 0;
 227                         LOG_ERROR("ftdi_read_data: %s", ftdi_get_error_string(&ftdic));
 228                         return ERROR_JTAG_DEVICE_ERROR;
 229                 }
 230                 *bytes_read += retval;
 231         }
 232 #endif
 233
 234         if (*bytes_read < size)
 235         {
 236                 LOG_ERROR("couldn't read the requested number of bytes from FT2232 device (%i < %i)", *bytes_read, size);
 237                 return ERROR_JTAG_DEVICE_ERROR;
 238         }
 239
 240         return ERROR_OK;
 241 }
 242
 243 int ft2232_speed(int speed)
 244 {
 245         u8 buf[3];
 246         int retval;
 247         u32 bytes_written;
 248
 249         buf[0] = 0x86; /* command "set divisor" */
 250         buf[1] = speed & 0xff; /* valueL (0=6MHz, 1=3MHz, 2=2.0MHz, ...*/
 251         buf[2] = (speed >> 8) & 0xff; /* valueH */
 252
 253         LOG_DEBUG("%2.2x %2.2x %2.2x", buf[0], buf[1], buf[2]);
 254         if (((retval = ft2232_write(buf, 3, &bytes_written)) != ERROR_OK) || (bytes_written != 3))
 255         {
 256                 LOG_ERROR("couldn't set FT2232 TCK speed");
 257                 return retval;
 258         }
 259
 260         return ERROR_OK;
 261 }
 262
 263 int ft2232_speed_div(int speed, int *khz)
 264 {
 265         /* Take a look in the FT2232 manual,
 266          * AN2232C-01 Command Processor for
 267          * MPSSE and MCU Host Bus. Chapter 3.8 */
 268
 269         *khz = 6000 / (1+speed);
 270
 271         return ERROR_OK;
 272 }
 273
 274 int ft2232_khz(int khz, int *jtag_speed)
 275 {
 276         /* Take a look in the FT2232 manual,
 277          * AN2232C-01 Command Processor for
 278          * MPSSE and MCU Host Bus. Chapter 3.8
 279          *
 280          * We will calc here with a multiplier
 281          * of 10 for better rounding later. */
 282
 283         /* Calc speed, (6000 / khz) - 1 */
 284         /* Use 65000 for better rounding */
 285         *jtag_speed = (60000 / khz) - 10;
 286
 287         /* Add 0.9 for rounding */
 288         *jtag_speed += 9;
 289
 290         /* Calc real speed */
 291         *jtag_speed = *jtag_speed / 10;
 292
 293         /* Check if speed is greater than 0 */
 294         if (*jtag_speed < 0)
 295         {
 296                 *jtag_speed = 0;
 297         }
 298
 299         return ERROR_OK;
 300 }
 301
 302 int ft2232_register_commands(struct command_context_s *cmd_ctx)
 303 {
 304         register_command(cmd_ctx, NULL, "ft2232_device_desc", ft2232_handle_device_desc_command,
 305                 COMMAND_CONFIG, NULL);
 306         register_command(cmd_ctx, NULL, "ft2232_serial", ft2232_handle_serial_command,
 307                 COMMAND_CONFIG, NULL);
 308         register_command(cmd_ctx, NULL, "ft2232_layout", ft2232_handle_layout_command,
 309                 COMMAND_CONFIG, NULL);
 310         register_command(cmd_ctx, NULL, "ft2232_vid_pid", ft2232_handle_vid_pid_command,
 311                                          COMMAND_CONFIG, NULL);
 312         register_command(cmd_ctx, NULL, "ft2232_latency", ft2232_handle_latency_command,
 313                                          COMMAND_CONFIG, NULL);
 314         return ERROR_OK;
 315 }
 316
 317 void ft2232_end_state(enum tap_state state)
 318 {
 319         if (tap_move_map[state] != -1)
 320                 end_state = state;
 321         else
 322         {
 323                 LOG_ERROR("BUG: %i is not a valid end state", state);
 324                 exit(-1);
 325         }
 326 }
 327
 328 void ft2232_read_scan(enum scan_type type, u8* buffer, int scan_size)
 329 {
 330         int num_bytes = ((scan_size + 7) / 8);
 331         int bits_left = scan_size;
 332         int cur_byte = 0;
 333
 334         while(num_bytes-- > 1)
 335         {
 336                 buffer[cur_byte] = BUFFER_READ;
 337                 cur_byte++;
 338                 bits_left -= 8;
 339         }
 340
 341         buffer[cur_byte] = 0x0;
 342
 343         if (bits_left > 1)
 344         {
 345                 buffer[cur_byte] = BUFFER_READ >> 1;
 346         }
 347
 348         buffer[cur_byte] = (buffer[cur_byte] | ((BUFFER_READ & 0x02) << 6)) >> (8 - bits_left);
 349
 350 }
 351
 352 void ft2232_debug_dump_buffer(void)
 353 {
 354         int i;
 355         char line[256];
 356         char *line_p = line;
 357
 358         for (i = 0; i < ft2232_buffer_size; i++)
 359         {
 360                 line_p += snprintf(line_p, 256 - (line_p - line), "%2.2x ", ft2232_buffer[i]);
 361                 if (i % 16 == 15)
 362                 {
 363                         LOG_DEBUG("%s", line);
 364                         line_p = line;
 365                 }
 366         }
 367
 368         if (line_p != line)
 369                 LOG_DEBUG("%s", line);
 370 }
 371
 372 int ft2232_send_and_recv(jtag_command_t *first, jtag_command_t *last)
 373 {
 374         jtag_command_t *cmd;
 375         u8 *buffer;
 376         int scan_size;
 377         enum scan_type type;
 378         int retval;
 379         u32 bytes_written;
 380         u32 bytes_read;
 381
 382 #ifdef _DEBUG_USB_IO_
 383         struct timeval start, inter, inter2, end;
 384         struct timeval d_inter, d_inter2, d_end;
 385 #endif
 386
 387 #ifdef _DEBUG_USB_COMMS_
 388         LOG_DEBUG("write buffer (size %i):", ft2232_buffer_size);
 389         ft2232_debug_dump_buffer();
 390 #endif
 391
 392 #ifdef _DEBUG_USB_IO_
 393         gettimeofday(&start, NULL);
 394 #endif
 395
 396         if ((retval = ft2232_write(ft2232_buffer, ft2232_buffer_size, &bytes_written)) != ERROR_OK)
 397         {
 398                 LOG_ERROR("couldn't write MPSSE commands to FT2232");
 399                 exit(-1);
 400         }
 401
 402 #ifdef _DEBUG_USB_IO_
 403         gettimeofday(&inter, NULL);
 404 #endif
 405
 406         if (ft2232_expect_read)
 407         {
 408                 int timeout = 100;
 409                 ft2232_buffer_size = 0;
 410
 411 #ifdef _DEBUG_USB_IO_
 412                 gettimeofday(&inter2, NULL);
 413 #endif
 414
 415                 if ((retval = ft2232_read(ft2232_buffer, ft2232_expect_read, &bytes_read)) != ERROR_OK)
 416                 {
 417                         LOG_ERROR("couldn't read from FT2232");
 418                         exit(-1);
 419                 }
 420
 421 #ifdef _DEBUG_USB_IO_
 422                 gettimeofday(&end, NULL);
 423
 424                 timeval_subtract(&d_inter, &inter, &start);
 425                 timeval_subtract(&d_inter2, &inter2, &start);
 426                 timeval_subtract(&d_end, &end, &start);
 427
 428                 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);
 429 #endif
 430
 431
 432                 ft2232_buffer_size = bytes_read;
 433
 434                 if (ft2232_expect_read != ft2232_buffer_size)
 435                 {
 436                         LOG_ERROR("ft2232_expect_read (%i) != ft2232_buffer_size (%i) (%i retries)", ft2232_expect_read, ft2232_buffer_size, 100 - timeout);
 437                         ft2232_debug_dump_buffer();
 438
 439                         exit(-1);
 440                 }
 441
 442 #ifdef _DEBUG_USB_COMMS_
 443                 LOG_DEBUG("read buffer (%i retries): %i bytes", 100 - timeout, ft2232_buffer_size);
 444                 ft2232_debug_dump_buffer();
 445 #endif
 446         }
 447
 448         ft2232_expect_read = 0;
 449         ft2232_read_pointer = 0;
 450
 451         /* return ERROR_OK, unless a jtag_read_buffer returns a failed check
 452          * that wasn't handled by a caller-provided error handler
 453          */
 454         retval = ERROR_OK;
 455
 456         cmd = first;
 457         while (cmd != last)
 458         {
 459                 switch (cmd->type)
 460                 {
 461                         case JTAG_SCAN:
 462                                 type = jtag_scan_type(cmd->cmd.scan);
 463                                 if (type != SCAN_OUT)
 464                                 {
 465                                         scan_size = jtag_scan_size(cmd->cmd.scan);
 466                                         buffer = calloc(CEIL(scan_size, 8), 1);
 467                                         ft2232_read_scan(type, buffer, scan_size);
 468                                         if (jtag_read_buffer(buffer, cmd->cmd.scan) != ERROR_OK)
 469                                                 retval = ERROR_JTAG_QUEUE_FAILED;
 470                                         free(buffer);
 471                                 }
 472                                 break;
 473                         default:
 474                                 break;
 475                 }
 476                 cmd = cmd->next;
 477         }
 478
 479         ft2232_buffer_size = 0;
 480
 481         return retval;
 482 }
 483
 484 void ft2232_add_pathmove(pathmove_command_t *cmd)
 485 {
 486         int num_states = cmd->num_states;
 487         u8 tms_byte;
 488         int state_count;
 489
 490         state_count = 0;
 491         while (num_states)
 492         {
 493                 int bit_count = 0;
 494
 495                 int num_states_batch = num_states > 7 ? 7 : num_states;
 496
 497                 tms_byte = 0x0;
 498                 /* command "Clock Data to TMS/CS Pin (no Read)" */
 499                 BUFFER_ADD = 0x4b;
 500                 /* number of states remaining */
 501                 BUFFER_ADD = num_states_batch - 1;
 502
 503                 while (num_states_batch--)
 504                 {
 505                         if (tap_transitions[cur_state].low == cmd->path[state_count])
 506                                 buf_set_u32(&tms_byte, bit_count++, 1, 0x0);
 507                         else if (tap_transitions[cur_state].high == cmd->path[state_count])
 508                                 buf_set_u32(&tms_byte, bit_count++, 1, 0x1);
 509                         else
 510                         {
 511                                 LOG_ERROR("BUG: %s -> %s isn't a valid TAP transition", tap_state_strings[cur_state], tap_state_strings[cmd->path[state_count]]);
 512                                 exit(-1);
 513                         }
 514
 515                         cur_state = cmd->path[state_count];
 516                         state_count++;
 517                         num_states--;
 518                 }
 519
 520                 BUFFER_ADD = tms_byte;
 521         }
 522
 523         end_state = cur_state;
 524 }
 525
 526 void ft2232_add_scan(int ir_scan, enum scan_type type, u8 *buffer, int scan_size)
 527 {
 528         int num_bytes = (scan_size + 7) / 8;
 529         int bits_left = scan_size;
 530         int cur_byte = 0;
 531         int last_bit;
 532
 533         if (!((!ir_scan && (cur_state == TAP_SD)) || (ir_scan && (cur_state == TAP_SI))))
 534         {
 535                 /* command "Clock Data to TMS/CS Pin (no Read)" */
 536                 BUFFER_ADD = 0x4b;
 537                 /* scan 7 bit */
 538                 BUFFER_ADD = 0x6;
 539                 /* TMS data bits */
 540                 if (ir_scan)
 541                 {
 542                         BUFFER_ADD = TAP_MOVE(cur_state, TAP_SI);
 543                         cur_state = TAP_SI;
 544                 }
 545                 else
 546                 {
 547                         BUFFER_ADD = TAP_MOVE(cur_state, TAP_SD);
 548                         cur_state = TAP_SD;
 549                 }
 550                 /* LOG_DEBUG("added TMS scan (no read)"); */
 551         }
 552
 553         /* add command for complete bytes */
 554         while (num_bytes > 1)
 555         {
 556                 int thisrun_bytes;
 557                 if (type == SCAN_IO)
 558                 {
 559                         /* Clock Data Bytes In and Out LSB First */
 560                         BUFFER_ADD = 0x39;
 561                         /* LOG_DEBUG("added TDI bytes (io %i)", num_bytes); */
 562                 }
 563                 else if (type == SCAN_OUT)
 564                 {
 565                         /* Clock Data Bytes Out on -ve Clock Edge LSB First (no Read) */
 566                         BUFFER_ADD = 0x19;
 567                         /* LOG_DEBUG("added TDI bytes (o)"); */
 568                 }
 569                 else if (type == SCAN_IN)
 570                 {
 571                         /* Clock Data Bytes In on +ve Clock Edge LSB First (no Write) */
 572                         BUFFER_ADD = 0x28;
 573                         /* LOG_DEBUG("added TDI bytes (i %i)", num_bytes); */
 574                 }
 575                 thisrun_bytes = (num_bytes > 65537) ? 65536 : (num_bytes - 1);
 576                 num_bytes -= thisrun_bytes;
 577                 BUFFER_ADD = (thisrun_bytes - 1) & 0xff;
 578                 BUFFER_ADD = ((thisrun_bytes - 1) >> 8) & 0xff;
 579                 if (type != SCAN_IN)
 580                 {
 581                         /* add complete bytes */
 582                         while(thisrun_bytes-- > 0)
 583                         {
 584                                 BUFFER_ADD = buffer[cur_byte];
 585                                 cur_byte++;
 586                                 bits_left -= 8;
 587                         }
 588                 }
 589                 else /* (type == SCAN_IN) */
 590                 {
 591                         bits_left -= 8 * (thisrun_bytes);
 592                 }
 593         }
 594
 595         /* the most signifcant bit is scanned during TAP movement */
 596         if (type != SCAN_IN)
 597                 last_bit = (buffer[cur_byte] >> (bits_left - 1)) & 0x1;
 598         else
 599                 last_bit = 0;
 600
 601         /* process remaining bits but the last one */
 602         if (bits_left > 1)
 603         {
 604                 if (type == SCAN_IO)
 605                 {
 606                         /* Clock Data Bits In and Out LSB First */
 607                         BUFFER_ADD = 0x3b;
 608                         /* LOG_DEBUG("added TDI bits (io) %i", bits_left - 1); */
 609                 }
 610                 else if (type == SCAN_OUT)
 611                 {
 612                         /* Clock Data Bits Out on -ve Clock Edge LSB First (no Read) */
 613                         BUFFER_ADD = 0x1b;
 614                         /* LOG_DEBUG("added TDI bits (o)"); */
 615                 }
 616                 else if (type == SCAN_IN)
 617                 {
 618                         /* Clock Data Bits In on +ve Clock Edge LSB First (no Write) */
 619                         BUFFER_ADD = 0x2a;
 620                         /* LOG_DEBUG("added TDI bits (i %i)", bits_left - 1); */
 621                 }
 622                 BUFFER_ADD = bits_left - 2;
 623                 if (type != SCAN_IN)
 624                         BUFFER_ADD = buffer[cur_byte];
 625         }
 626
 627         if ((ir_scan && (end_state == TAP_SI)) ||
 628                 (!ir_scan && (end_state == TAP_SD)))
 629         {
 630                 if (type == SCAN_IO)
 631                 {
 632                         /* Clock Data Bits In and Out LSB First */
 633                         BUFFER_ADD = 0x3b;
 634                         /* LOG_DEBUG("added TDI bits (io) %i", bits_left - 1); */
 635                 }
 636                 else if (type == SCAN_OUT)
 637                 {
 638                         /* Clock Data Bits Out on -ve Clock Edge LSB First (no Read) */
 639                         BUFFER_ADD = 0x1b;
 640                         /* LOG_DEBUG("added TDI bits (o)"); */
 641                 }
 642                 else if (type == SCAN_IN)
 643                 {
 644                         /* Clock Data Bits In on +ve Clock Edge LSB First (no Write) */
 645                         BUFFER_ADD = 0x2a;
 646                         /* LOG_DEBUG("added TDI bits (i %i)", bits_left - 1); */
 647                 }
 648                 BUFFER_ADD = 0x0;
 649                 BUFFER_ADD = last_bit;
 650         }
 651         else
 652         {
 653                 /* move from Shift-IR/DR to end state */
 654                 if (type != SCAN_OUT)
 655                 {
 656                         /* Clock Data to TMS/CS Pin with Read */
 657                         BUFFER_ADD = 0x6b;
 658                         /* LOG_DEBUG("added TMS scan (read)"); */
 659                 }
 660                 else
 661                 {
 662                         /* Clock Data to TMS/CS Pin (no Read) */
 663                         BUFFER_ADD = 0x4b;
 664                         /* LOG_DEBUG("added TMS scan (no read)"); */
 665                 }
 666                 BUFFER_ADD = 0x6;
 667                 BUFFER_ADD = TAP_MOVE(cur_state, end_state) | (last_bit << 7);
 668                 cur_state = end_state;
 669         }
 670 }
 671
 672 int ft2232_large_scan(scan_command_t *cmd, enum scan_type type, u8 *buffer, int scan_size)
 673 {
 674         int num_bytes = (scan_size + 7) / 8;
 675         int bits_left = scan_size;
 676         int cur_byte = 0;
 677         int last_bit;
 678         u8 *receive_buffer = malloc(CEIL(scan_size, 8));
 679         u8 *receive_pointer = receive_buffer;
 680         u32 bytes_written;
 681         u32 bytes_read;
 682         int retval;
 683         int thisrun_read = 0;
 684
 685         if (cmd->ir_scan)
 686         {
 687                 LOG_ERROR("BUG: large IR scans are not supported");
 688                 exit(-1);
 689         }
 690
 691         if (cur_state != TAP_SD)
 692         {
 693                 /* command "Clock Data to TMS/CS Pin (no Read)" */
 694                 BUFFER_ADD = 0x4b;
 695                 /* scan 7 bit */
 696                 BUFFER_ADD = 0x6;
 697                 /* TMS data bits */
 698                 BUFFER_ADD = TAP_MOVE(cur_state, TAP_SD);
 699                 cur_state = TAP_SD;
 700         }
 701
 702         if ((retval = ft2232_write(ft2232_buffer, ft2232_buffer_size, &bytes_written)) != ERROR_OK)
 703         {
 704                 LOG_ERROR("couldn't write MPSSE commands to FT2232");
 705                 exit(-1);
 706         }
 707         LOG_DEBUG("ft2232_buffer_size: %i, bytes_written: %i", ft2232_buffer_size, bytes_written);
 708         ft2232_buffer_size = 0;
 709
 710         /* add command for complete bytes */
 711         while (num_bytes > 1)
 712         {
 713                 int thisrun_bytes;
 714
 715                 if (type == SCAN_IO)
 716                 {
 717                         /* Clock Data Bytes In and Out LSB First */
 718                         BUFFER_ADD = 0x39;
 719                         /* LOG_DEBUG("added TDI bytes (io %i)", num_bytes); */
 720                 }
 721                 else if (type == SCAN_OUT)
 722                 {
 723                         /* Clock Data Bytes Out on -ve Clock Edge LSB First (no Read) */
 724                         BUFFER_ADD = 0x19;
 725                         /* LOG_DEBUG("added TDI bytes (o)"); */
 726                 }
 727                 else if (type == SCAN_IN)
 728                 {
 729                         /* Clock Data Bytes In on +ve Clock Edge LSB First (no Write) */
 730                         BUFFER_ADD = 0x28;
 731                         /* LOG_DEBUG("added TDI bytes (i %i)", num_bytes); */
 732                 }
 733                 thisrun_bytes = (num_bytes > 65537) ? 65536 : (num_bytes - 1);
 734                 thisrun_read = thisrun_bytes;
 735                 num_bytes -= thisrun_bytes;
 736                 BUFFER_ADD = (thisrun_bytes - 1) & 0xff;
 737                 BUFFER_ADD = ((thisrun_bytes - 1) >> 8) & 0xff;
 738                 if (type != SCAN_IN)
 739                 {
 740                         /* add complete bytes */
 741                         while(thisrun_bytes-- > 0)
 742                         {
 743                                 BUFFER_ADD = buffer[cur_byte];
 744                                 cur_byte++;
 745                                 bits_left -= 8;
 746                         }
 747                 }
 748                 else /* (type == SCAN_IN) */
 749                 {
 750                         bits_left -= 8 * (thisrun_bytes);
 751                 }
 752
 753                 if ((retval = ft2232_write(ft2232_buffer, ft2232_buffer_size, &bytes_written)) != ERROR_OK)
 754                 {
 755                         LOG_ERROR("couldn't write MPSSE commands to FT2232");
 756                         exit(-1);
 757                 }
 758                 LOG_DEBUG("ft2232_buffer_size: %i, bytes_written: %i", ft2232_buffer_size, bytes_written);
 759                 ft2232_buffer_size = 0;
 760
 761                 if (type != SCAN_OUT)
 762                 {
 763                         if ((retval = ft2232_read(receive_pointer, thisrun_read, &bytes_read)) != ERROR_OK)
 764                         {
 765                                 LOG_ERROR("couldn't read from FT2232");
 766                                 exit(-1);
 767                         }
 768                         LOG_DEBUG("thisrun_read: %i, bytes_read: %i", thisrun_read, bytes_read);
 769                         receive_pointer += bytes_read;
 770                 }
 771         }
 772
 773         thisrun_read = 0;
 774
 775         /* the most signifcant bit is scanned during TAP movement */
 776         if (type != SCAN_IN)
 777                 last_bit = (buffer[cur_byte] >> (bits_left - 1)) & 0x1;
 778         else
 779                 last_bit = 0;
 780
 781         /* process remaining bits but the last one */
 782         if (bits_left > 1)
 783         {
 784                 if (type == SCAN_IO)
 785                 {
 786                         /* Clock Data Bits In and Out LSB First */
 787                         BUFFER_ADD = 0x3b;
 788                         /* LOG_DEBUG("added TDI bits (io) %i", bits_left - 1); */
 789                 }
 790                 else if (type == SCAN_OUT)
 791                 {
 792                         /* Clock Data Bits Out on -ve Clock Edge LSB First (no Read) */
 793                         BUFFER_ADD = 0x1b;
 794                         /* LOG_DEBUG("added TDI bits (o)"); */
 795                 }
 796                 else if (type == SCAN_IN)
 797                 {
 798                         /* Clock Data Bits In on +ve Clock Edge LSB First (no Write) */
 799                         BUFFER_ADD = 0x2a;
 800                         /* LOG_DEBUG("added TDI bits (i %i)", bits_left - 1); */
 801                 }
 802                 BUFFER_ADD = bits_left - 2;
 803                 if (type != SCAN_IN)
 804                         BUFFER_ADD = buffer[cur_byte];
 805
 806                 if (type != SCAN_OUT)
 807                         thisrun_read += 2;
 808         }
 809
 810         if (end_state == TAP_SD)
 811         {
 812                 if (type == SCAN_IO)
 813                 {
 814                         /* Clock Data Bits In and Out LSB First */
 815                         BUFFER_ADD = 0x3b;
 816                         /* LOG_DEBUG("added TDI bits (io) %i", bits_left - 1); */
 817                 }
 818                 else if (type == SCAN_OUT)
 819                 {
 820                         /* Clock Data Bits Out on -ve Clock Edge LSB First (no Read) */
 821                         BUFFER_ADD = 0x1b;
 822                         /* LOG_DEBUG("added TDI bits (o)"); */
 823                 }
 824                 else if (type == SCAN_IN)
 825                 {
 826                         /* Clock Data Bits In on +ve Clock Edge LSB First (no Write) */
 827                         BUFFER_ADD = 0x2a;
 828                         /* LOG_DEBUG("added TDI bits (i %i)", bits_left - 1); */
 829                 }
 830                 BUFFER_ADD = 0x0;
 831                 BUFFER_ADD = last_bit;
 832         }
 833         else
 834         {
 835                 /* move from Shift-IR/DR to end state */
 836                 if (type != SCAN_OUT)
 837                 {
 838                         /* Clock Data to TMS/CS Pin with Read */
 839                         BUFFER_ADD = 0x6b;
 840                         /* LOG_DEBUG("added TMS scan (read)"); */
 841                 }
 842                 else
 843                 {
 844                         /* Clock Data to TMS/CS Pin (no Read) */
 845                         BUFFER_ADD = 0x4b;
 846                         /* LOG_DEBUG("added TMS scan (no read)"); */
 847                 }
 848                 BUFFER_ADD = 0x6;
 849                 BUFFER_ADD = TAP_MOVE(cur_state, end_state) | (last_bit << 7);
 850                 cur_state = end_state;
 851         }
 852
 853         if (type != SCAN_OUT)
 854                 thisrun_read += 1;
 855
 856         if ((retval = ft2232_write(ft2232_buffer, ft2232_buffer_size, &bytes_written)) != ERROR_OK)
 857         {
 858                 LOG_ERROR("couldn't write MPSSE commands to FT2232");
 859                 exit(-1);
 860         }
 861         LOG_DEBUG("ft2232_buffer_size: %i, bytes_written: %i", ft2232_buffer_size, bytes_written);
 862         ft2232_buffer_size = 0;
 863
 864         if (type != SCAN_OUT)
 865         {
 866                 if ((retval = ft2232_read(receive_pointer, thisrun_read, &bytes_read)) != ERROR_OK)
 867                 {
 868                         LOG_ERROR("couldn't read from FT2232");
 869                         exit(-1);
 870                 }
 871                 LOG_DEBUG("thisrun_read: %i, bytes_read: %i", thisrun_read, bytes_read);
 872                 receive_pointer += bytes_read;
 873         }
 874
 875         return ERROR_OK;
 876 }
 877
 878 int ft2232_predict_scan_out(int scan_size, enum scan_type type)
 879 {
 880         int predicted_size = 3;
 881         int num_bytes = (scan_size - 1) / 8;
 882
 883         if (cur_state != TAP_SD)
 884                 predicted_size += 3;
 885
 886         if (type == SCAN_IN)    /* only from device to host */
 887         {
 888                 /* complete bytes */
 889                 predicted_size += (CEIL(num_bytes, 65536)) * 3;
 890                 /* remaining bits - 1 (up to 7) */
 891                 predicted_size += ((scan_size - 1) % 8) ? 2 : 0;
 892         }
 893         else                                    /* host to device, or bidirectional */
 894         {
 895                 /* complete bytes */
 896                 predicted_size += num_bytes + (CEIL(num_bytes, 65536)) * 3;
 897                 /* remaining bits -1 (up to 7) */
 898                 predicted_size += ((scan_size - 1) % 8) ? 3 : 0;
 899         }
 900
 901         return predicted_size;
 902 }
 903
 904 int ft2232_predict_scan_in(int scan_size, enum scan_type type)
 905 {
 906         int predicted_size = 0;
 907
 908         if (type != SCAN_OUT)
 909         {
 910                 /* complete bytes */
 911                 predicted_size += (CEIL(scan_size, 8) > 1) ? (CEIL(scan_size, 8) - 1) : 0;
 912                 /* remaining bits - 1 */
 913                 predicted_size += ((scan_size - 1) % 8) ? 1 : 0;
 914                 /* last bit (from TMS scan) */
 915                 predicted_size += 1;
 916         }
 917
 918         /* LOG_DEBUG("scan_size: %i, predicted_size: %i", scan_size, predicted_size); */
 919
 920         return predicted_size;
 921 }
 922
 923 void usbjtag_reset(int trst, int srst)
 924 {
 925         if (trst == 1)
 926         {
 927                 if (jtag_reset_config & RESET_TRST_OPEN_DRAIN)
 928                         low_direction |= nTRSTnOE;      /* switch to output pin (output is low) */
 929                 else
 930                         low_output &= ~nTRST;   /* switch output low */
 931         }
 932         else if (trst == 0)
 933         {
 934                 if (jtag_reset_config & RESET_TRST_OPEN_DRAIN)
 935                         low_direction &= ~nTRSTnOE; /* switch to input pin (high-Z + internal and external pullup) */
 936                 else
 937                         low_output |= nTRST; /* switch output high */
 938         }
 939
 940         if (srst == 1)
 941         {
 942                 if (jtag_reset_config & RESET_SRST_PUSH_PULL)
 943                         low_output &= ~nSRST;   /* switch output low */
 944                 else
 945                         low_direction |= nSRSTnOE;      /* switch to output pin (output is low) */
 946         }
 947         else if (srst == 0)
 948         {
 949                 if (jtag_reset_config & RESET_SRST_PUSH_PULL)
 950                         low_output |= nSRST;    /* switch output high */
 951                 else
 952                         low_direction &= ~nSRSTnOE;     /* switch to input pin (high-Z) */
 953         }
 954
 955         /* command "set data bits low byte" */
 956         BUFFER_ADD = 0x80;
 957         BUFFER_ADD = low_output;
 958         BUFFER_ADD = low_direction;
 959
 960 }
 961
 962 void jtagkey_reset(int trst, int srst)
 963 {
 964         if (trst == 1)
 965         {
 966                 if (jtag_reset_config & RESET_TRST_OPEN_DRAIN)
 967                         high_output &= ~nTRSTnOE;
 968                 else
 969                         high_output &= ~nTRST;
 970         }
 971         else if (trst == 0)
 972         {
 973                 if (jtag_reset_config & RESET_TRST_OPEN_DRAIN)
 974                         high_output |= nTRSTnOE;
 975                 else
 976                         high_output |= nTRST;
 977         }
 978
 979         if (srst == 1)
 980         {
 981                 if (jtag_reset_config & RESET_SRST_PUSH_PULL)
 982                         high_output &= ~nSRST;
 983                 else
 984                         high_output &= ~nSRSTnOE;
 985         }
 986         else if (srst == 0)
 987         {
 988                 if (jtag_reset_config & RESET_SRST_PUSH_PULL)
 989                         high_output |= nSRST;
 990                 else
 991                         high_output |= nSRSTnOE;
 992         }
 993
 994         /* command "set data bits high byte" */
 995         BUFFER_ADD = 0x82;
 996         BUFFER_ADD = high_output;
 997         BUFFER_ADD = high_direction;
 998         LOG_DEBUG("trst: %i, srst: %i, high_output: 0x%2.2x, high_direction: 0x%2.2x", trst, srst, high_output, high_direction);
 999 }
1000
1001 void olimex_jtag_reset(int trst, int srst)
1002 {
1003         if (trst == 1)
1004         {
1005                 if (jtag_reset_config & RESET_TRST_OPEN_DRAIN)
1006                         high_output &= ~nTRSTnOE;
1007                 else
1008                         high_output &= ~nTRST;
1009         }
1010         else if (trst == 0)
1011         {
1012                 if (jtag_reset_config & RESET_TRST_OPEN_DRAIN)
1013                         high_output |= nTRSTnOE;
1014                 else
1015                         high_output |= nTRST;
1016         }
1017
1018         if (srst == 1)
1019         {
1020                 high_output |= nSRST;
1021         }
1022         else if (srst == 0)
1023         {
1024                 high_output &= ~nSRST;
1025         }
1026
1027         /* command "set data bits high byte" */
1028         BUFFER_ADD = 0x82;
1029         BUFFER_ADD = high_output;
1030         BUFFER_ADD = high_direction;
1031         LOG_DEBUG("trst: %i, srst: %i, high_output: 0x%2.2x, high_direction: 0x%2.2x", trst, srst, high_output, high_direction);
1032 }
1033
1034 void flyswatter_reset(int trst, int srst)
1035 {
1036         if (trst == 1)
1037         {
1038                 low_output &= ~nTRST;
1039         }
1040         else if (trst == 0)
1041         {
1042                 low_output |= nTRST;
1043         }
1044
1045         if (srst == 1)
1046         {
1047                 low_output |= nSRST;
1048         }
1049         else if (srst == 0)
1050         {
1051                 low_output &= ~nSRST;
1052         }
1053
1054         /* command "set data bits low byte" */
1055         BUFFER_ADD = 0x80;
1056         BUFFER_ADD = low_output;
1057         BUFFER_ADD = low_direction;
1058         LOG_DEBUG("trst: %i, srst: %i, low_output: 0x%2.2x, low_direction: 0x%2.2x", trst, srst, low_output, low_direction);
1059 }
1060
1061 void turtle_reset(int trst, int srst)
1062 {
1063         trst = trst;
1064
1065         if (srst == 1)
1066         {
1067                 low_output |= nSRST;
1068         }
1069         else if (srst == 0)
1070         {
1071                 low_output &= ~nSRST;
1072         }
1073
1074         /* command "set data bits low byte" */
1075         BUFFER_ADD = 0x80;
1076         BUFFER_ADD = low_output;
1077         BUFFER_ADD = low_direction;
1078         LOG_DEBUG("srst: %i, low_output: 0x%2.2x, low_direction: 0x%2.2x", srst, low_output, low_direction);
1079 }
1080
1081 void comstick_reset(int trst, int srst)
1082 {
1083         if (trst == 1)
1084         {
1085                 high_output &= ~nTRST;
1086         }
1087         else if (trst == 0)
1088         {
1089                 high_output |= nTRST;
1090         }
1091
1092         if (srst == 1)
1093         {
1094                 high_output &= ~nSRST;
1095         }
1096         else if (srst == 0)
1097         {
1098                 high_output |= nSRST;
1099         }
1100
1101         /* command "set data bits high byte" */
1102         BUFFER_ADD = 0x82;
1103         BUFFER_ADD = high_output;
1104         BUFFER_ADD = high_direction;
1105         LOG_DEBUG("trst: %i, srst: %i, high_output: 0x%2.2x, high_direction: 0x%2.2x", trst, srst, high_output, high_direction);
1106 }
1107
1108 void stm32stick_reset(int trst, int srst)
1109 {
1110         if (trst == 1)
1111         {
1112                 high_output &= ~nTRST;
1113         }
1114         else if (trst == 0)
1115         {
1116                 high_output |= nTRST;
1117         }
1118
1119         if (srst == 1)
1120         {
1121                 low_output &= ~nSRST;
1122         }
1123         else if (srst == 0)
1124         {
1125                 low_output |= nSRST;
1126         }
1127
1128         /* command "set data bits low byte" */
1129         BUFFER_ADD = 0x80;
1130         BUFFER_ADD = low_output;
1131         BUFFER_ADD = low_direction;
1132
1133         /* command "set data bits high byte" */
1134         BUFFER_ADD = 0x82;
1135         BUFFER_ADD = high_output;
1136         BUFFER_ADD = high_direction;
1137         LOG_DEBUG("trst: %i, srst: %i, high_output: 0x%2.2x, high_direction: 0x%2.2x", trst, srst, high_output, high_direction);
1138 }
1139
1140 int ft2232_execute_queue()
1141 {
1142         jtag_command_t *cmd = jtag_command_queue; /* currently processed command */
1143         jtag_command_t *first_unsent = cmd;     /* next command that has to be sent */
1144         u8 *buffer;
1145         int scan_size;  /* size of IR or DR scan */
1146         enum scan_type type;
1147         int i;
1148         int predicted_size = 0;
1149         int require_send = 0;
1150         int retval;
1151
1152         /* return ERROR_OK, unless ft2232_send_and_recv reports a failed check
1153          * that wasn't handled by a caller-provided error handler
1154          */
1155         retval = ERROR_OK;
1156
1157         ft2232_buffer_size = 0;
1158         ft2232_expect_read = 0;
1159
1160         /* blink, if the current layout has that feature */
1161         if (layout->blink)
1162                 layout->blink();
1163
1164         while (cmd)
1165         {
1166                 switch(cmd->type)
1167                 {
1168                         case JTAG_END_STATE:
1169                                 if (cmd->cmd.end_state->end_state != -1)
1170                                         ft2232_end_state(cmd->cmd.end_state->end_state);
1171                                 break;
1172                         case JTAG_RESET:
1173                                 /* only send the maximum buffer size that FT2232C can handle */
1174                                 predicted_size = 3;
1175                                 if (ft2232_buffer_size + predicted_size + 1 > FT2232_BUFFER_SIZE)
1176                                 {
1177                                         if (ft2232_send_and_recv(first_unsent, cmd) != ERROR_OK)
1178                                                 retval = ERROR_JTAG_QUEUE_FAILED;
1179                                         require_send = 0;
1180                                         first_unsent = cmd;
1181                                 }
1182
1183                                 if ((cmd->cmd.reset->trst == 1) || (cmd->cmd.reset->srst && (jtag_reset_config & RESET_SRST_PULLS_TRST)))
1184                                 {
1185                                         cur_state = TAP_TLR;
1186                                 }
1187                                 layout->reset(cmd->cmd.reset->trst, cmd->cmd.reset->srst);
1188                                 require_send = 1;
1189
1190 #ifdef _DEBUG_JTAG_IO_
1191                                 LOG_DEBUG("trst: %i, srst: %i", cmd->cmd.reset->trst, cmd->cmd.reset->srst);
1192 #endif
1193                                 break;
1194                         case JTAG_RUNTEST:
1195                                 /* only send the maximum buffer size that FT2232C can handle */
1196                                 predicted_size = 0;
1197                                 if (cur_state != TAP_RTI)
1198                                         predicted_size += 3;
1199                                 predicted_size += 3 * CEIL(cmd->cmd.runtest->num_cycles, 7);
1200                                 if ((cmd->cmd.runtest->end_state != -1) && (cmd->cmd.runtest->end_state != TAP_RTI))
1201                                         predicted_size += 3;
1202                                 if ((cmd->cmd.runtest->end_state == -1) && (end_state != TAP_RTI))
1203                                         predicted_size += 3;
1204                                 if (ft2232_buffer_size + predicted_size + 1 > FT2232_BUFFER_SIZE)
1205                                 {
1206                                         if (ft2232_send_and_recv(first_unsent, cmd) != ERROR_OK)
1207                                                 retval = ERROR_JTAG_QUEUE_FAILED;
1208                                         require_send = 0;
1209                                         first_unsent = cmd;
1210                                 }
1211                                 if (cur_state != TAP_RTI)
1212                                 {
1213                                         /* command "Clock Data to TMS/CS Pin (no Read)" */
1214                                         BUFFER_ADD = 0x4b;
1215                                         /* scan 7 bit */
1216                                         BUFFER_ADD = 0x6;
1217                                         /* TMS data bits */
1218                                         BUFFER_ADD = TAP_MOVE(cur_state, TAP_RTI);
1219                                         cur_state = TAP_RTI;
1220                                         require_send = 1;
1221                                 }
1222                                 i = cmd->cmd.runtest->num_cycles;
1223                                 while (i > 0)
1224                                 {
1225                                         /* command "Clock Data to TMS/CS Pin (no Read)" */
1226                                         BUFFER_ADD = 0x4b;
1227                                         /* scan 7 bit */
1228                                         BUFFER_ADD = (i > 7) ? 6 : (i - 1);
1229                                         /* TMS data bits */
1230                                         BUFFER_ADD = 0x0;
1231                                         cur_state = TAP_RTI;
1232                                         i -= (i > 7) ? 7 : i;
1233                                         /* LOG_DEBUG("added TMS scan (no read)"); */
1234                                 }
1235                                 if (cmd->cmd.runtest->end_state != -1)
1236                                         ft2232_end_state(cmd->cmd.runtest->end_state);
1237                                 if (cur_state != end_state)
1238                                 {
1239                                         /* command "Clock Data to TMS/CS Pin (no Read)" */
1240                                         BUFFER_ADD = 0x4b;
1241                                         /* scan 7 bit */
1242                                         BUFFER_ADD = 0x6;
1243                                         /* TMS data bits */
1244                                         BUFFER_ADD = TAP_MOVE(cur_state, end_state);
1245                                         cur_state = end_state;
1246                                         /* LOG_DEBUG("added TMS scan (no read)"); */
1247                                 }
1248                                 require_send = 1;
1249 #ifdef _DEBUG_JTAG_IO_
1250                                 LOG_DEBUG("runtest: %i, end in %i", cmd->cmd.runtest->num_cycles, end_state);
1251 #endif
1252                                 break;
1253                         case JTAG_STATEMOVE:
1254                                 /* only send the maximum buffer size that FT2232C can handle */
1255                                 predicted_size = 3;
1256                                 if (ft2232_buffer_size + predicted_size + 1 > FT2232_BUFFER_SIZE)
1257                                 {
1258                                         if (ft2232_send_and_recv(first_unsent, cmd) != ERROR_OK)
1259                                                 retval = ERROR_JTAG_QUEUE_FAILED;
1260                                         require_send = 0;
1261                                         first_unsent = cmd;
1262                                 }
1263                                 if (cmd->cmd.statemove->end_state != -1)
1264                                         ft2232_end_state(cmd->cmd.statemove->end_state);
1265                                 /* command "Clock Data to TMS/CS Pin (no Read)" */
1266                                 BUFFER_ADD = 0x4b;
1267                                 /* scan 7 bit */
1268                                 BUFFER_ADD = 0x6;
1269                                 /* TMS data bits */
1270                                 BUFFER_ADD = TAP_MOVE(cur_state, end_state);
1271                                 /* LOG_DEBUG("added TMS scan (no read)"); */
1272                                 cur_state = end_state;
1273                                 require_send = 1;
1274 #ifdef _DEBUG_JTAG_IO_
1275                                 LOG_DEBUG("statemove: %i", end_state);
1276 #endif
1277                                 break;
1278                         case JTAG_PATHMOVE:
1279                                 /* only send the maximum buffer size that FT2232C can handle */
1280                                 predicted_size = 3 * CEIL(cmd->cmd.pathmove->num_states, 7);
1281                                 if (ft2232_buffer_size + predicted_size + 1 > FT2232_BUFFER_SIZE)
1282                                 {
1283                                         if (ft2232_send_and_recv(first_unsent, cmd) != ERROR_OK)
1284                                                 retval = ERROR_JTAG_QUEUE_FAILED;
1285                                         require_send = 0;
1286                                         first_unsent = cmd;
1287                                 }
1288                                 ft2232_add_pathmove(cmd->cmd.pathmove);
1289                                 require_send = 1;
1290 #ifdef _DEBUG_JTAG_IO_
1291                                 LOG_DEBUG("pathmove: %i states, end in %i", cmd->cmd.pathmove->num_states, cmd->cmd.pathmove->path[cmd->cmd.pathmove->num_states - 1]);
1292 #endif
1293                                 break;
1294                         case JTAG_SCAN:
1295                                 scan_size = jtag_build_buffer(cmd->cmd.scan, &buffer);
1296                                 type = jtag_scan_type(cmd->cmd.scan);
1297                                 predicted_size = ft2232_predict_scan_out(scan_size, type);
1298                                 if ((predicted_size + 1) > FT2232_BUFFER_SIZE)
1299                                 {
1300                                         LOG_DEBUG("oversized ft2232 scan (predicted_size > FT2232_BUFFER_SIZE)");
1301                                         /* unsent commands before this */
1302                                         if (first_unsent != cmd)
1303                                                 if (ft2232_send_and_recv(first_unsent, cmd) != ERROR_OK)
1304                                                         retval = ERROR_JTAG_QUEUE_FAILED;
1305
1306                                         /* current command */
1307                                         if (cmd->cmd.scan->end_state != -1)
1308                                                 ft2232_end_state(cmd->cmd.scan->end_state);
1309                                         ft2232_large_scan(cmd->cmd.scan, type, buffer, scan_size);
1310                                         require_send = 0;
1311                                         first_unsent = cmd->next;
1312                                         if (buffer)
1313                                                 free(buffer);
1314                                         break;
1315                                 }
1316                                 else if (ft2232_buffer_size + predicted_size + 1 > FT2232_BUFFER_SIZE)
1317                                 {
1318                                         LOG_DEBUG("ft2232 buffer size reached, sending queued commands (first_unsent: %p, cmd: %p)", first_unsent, cmd);
1319                                         if (ft2232_send_and_recv(first_unsent, cmd) != ERROR_OK)
1320                                                 retval = ERROR_JTAG_QUEUE_FAILED;
1321                                         require_send = 0;
1322                                         first_unsent = cmd;
1323                                 }
1324                                 ft2232_expect_read += ft2232_predict_scan_in(scan_size, type);
1325                                 /* LOG_DEBUG("new read size: %i", ft2232_expect_read); */
1326                                 if (cmd->cmd.scan->end_state != -1)
1327                                         ft2232_end_state(cmd->cmd.scan->end_state);
1328                                 ft2232_add_scan(cmd->cmd.scan->ir_scan, type, buffer, scan_size);
1329                                 require_send = 1;
1330                                 if (buffer)
1331                                         free(buffer);
1332 #ifdef _DEBUG_JTAG_IO_
1333                                 LOG_DEBUG("%s scan, %i bit, end in %i", (cmd->cmd.scan->ir_scan) ? "IR" : "DR", scan_size, end_state);
1334 #endif
1335                                 break;
1336                         case JTAG_SLEEP:
1337                                 if (ft2232_send_and_recv(first_unsent, cmd) != ERROR_OK)
1338                                         retval = ERROR_JTAG_QUEUE_FAILED;
1339                                 first_unsent = cmd->next;
1340                                 jtag_sleep(cmd->cmd.sleep->us);
1341 #ifdef _DEBUG_JTAG_IO_
1342                                 LOG_DEBUG("sleep %i usec", cmd->cmd.sleep->us);
1343 #endif
1344                                 break;
1345                         default:
1346                                 LOG_ERROR("BUG: unknown JTAG command type encountered");
1347                                 exit(-1);
1348                 }
1349                 cmd = cmd->next;
1350         }
1351
1352         if (require_send > 0)
1353                 if (ft2232_send_and_recv(first_unsent, cmd) != ERROR_OK)
1354                         retval = ERROR_JTAG_QUEUE_FAILED;
1355
1356         return retval;
1357 }
1358
1359 #if BUILD_FT2232_FTD2XX == 1
1360 static int ft2232_init_ftd2xx(u16 vid, u16 pid, int more, int *try_more)
1361 {
1362         FT_STATUS status;
1363         DWORD openex_flags = 0;
1364         char *openex_string = NULL;
1365         u8 latency_timer;
1366
1367         LOG_DEBUG("'ft2232' interface using FTD2XX with '%s' layout (%4.4x:%4.4x)",
1368             ft2232_layout, vid, pid);
1369
1370 #if IS_WIN32 == 0
1371         /* Add non-standard Vid/Pid to the linux driver */
1372         if ((status = FT_SetVIDPID(vid, pid)) != FT_OK)
1373         {
1374                 LOG_WARNING("couldn't add %4.4x:%4.4x",
1375                     vid, pid);
1376         }
1377 #endif
1378
1379         if (ft2232_device_desc && ft2232_serial)
1380         {
1381                 LOG_WARNING("can't open by device description and serial number, giving precedence to serial");
1382                 ft2232_device_desc = NULL;
1383         }
1384
1385         if (ft2232_device_desc)
1386         {
1387                 openex_string = ft2232_device_desc;
1388                 openex_flags = FT_OPEN_BY_DESCRIPTION;
1389         }
1390         else if (ft2232_serial)
1391         {
1392                 openex_string = ft2232_serial;
1393                 openex_flags = FT_OPEN_BY_SERIAL_NUMBER;
1394         }
1395         else
1396         {
1397                 LOG_ERROR("neither device description nor serial number specified");
1398                 LOG_ERROR("please add \"ft2232_device_desc <string>\" or \"ft2232_serial <string>\" to your .cfg file");
1399
1400                 return ERROR_JTAG_INIT_FAILED;
1401         }
1402
1403         if ((status = FT_OpenEx(openex_string, openex_flags, &ftdih)) != FT_OK)
1404         {
1405                 DWORD num_devices;
1406
1407                 if (more) {
1408                         LOG_WARNING("unable to open ftdi device (trying more): %lu",
1409                             status);
1410                         *try_more = 1;
1411                         return ERROR_JTAG_INIT_FAILED;
1412                 }
1413                 LOG_ERROR("unable to open ftdi device: %lu", status);
1414                 status = FT_ListDevices(&num_devices, NULL, FT_LIST_NUMBER_ONLY);
1415                 if (status == FT_OK)
1416                 {
1417                         char **desc_array = malloc(sizeof(char*) * (num_devices + 1));
1418                         int i;
1419
1420                         for (i = 0; i < num_devices; i++)
1421                                 desc_array[i] = malloc(64);
1422                         desc_array[num_devices] = NULL;
1423
1424                         status = FT_ListDevices(desc_array, &num_devices, FT_LIST_ALL | openex_flags);
1425
1426                         if (status == FT_OK)
1427                         {
1428                                 LOG_ERROR("ListDevices: %lu\n", num_devices);
1429                                 for (i = 0; i < num_devices; i++)
1430                                         LOG_ERROR("%i: %s", i, desc_array[i]);
1431                         }
1432
1433                         for (i = 0; i < num_devices; i++)
1434                                 free(desc_array[i]);
1435                         free(desc_array);
1436                 }
1437                 else
1438                 {
1439                         LOG_ERROR("ListDevices: NONE\n");
1440                 }
1441                 return ERROR_JTAG_INIT_FAILED;
1442         }
1443
1444         if ((status = FT_SetLatencyTimer(ftdih, ft2232_latency)) != FT_OK)
1445         {
1446                 LOG_ERROR("unable to set latency timer: %lu", status);
1447                 return ERROR_JTAG_INIT_FAILED;
1448         }
1449
1450         if ((status = FT_GetLatencyTimer(ftdih, &latency_timer)) != FT_OK)
1451         {
1452                 LOG_ERROR("unable to get latency timer: %lu", status);
1453                 return ERROR_JTAG_INIT_FAILED;
1454         }
1455         else
1456         {
1457                 LOG_DEBUG("current latency timer: %i", latency_timer);
1458         }
1459
1460         if ((status = FT_SetTimeouts(ftdih, 5000, 5000)) != FT_OK)
1461         {
1462                 LOG_ERROR("unable to set timeouts: %lu", status);
1463                 return ERROR_JTAG_INIT_FAILED;
1464         }
1465
1466         if ((status = FT_SetBitMode(ftdih, 0x0b, 2)) != FT_OK)
1467         {
1468                 LOG_ERROR("unable to enable bit i/o mode: %lu", status);
1469                 return ERROR_JTAG_INIT_FAILED;
1470         }
1471
1472         return ERROR_OK;
1473 }
1474
1475 static int ft2232_purge_ftd2xx(void)
1476 {
1477         FT_STATUS status;
1478
1479         if ((status = FT_Purge(ftdih, FT_PURGE_RX | FT_PURGE_TX)) != FT_OK)
1480         {
1481                 LOG_ERROR("error purging ftd2xx device: %lu", status);
1482                 return ERROR_JTAG_INIT_FAILED;
1483         }
1484
1485         return ERROR_OK;
1486 }
1487 #endif /* BUILD_FT2232_FTD2XX == 1 */
1488
1489 #if BUILD_FT2232_LIBFTDI == 1
1490 static int ft2232_init_libftdi(u16 vid, u16 pid, int more, int *try_more)
1491 {
1492         u8 latency_timer;
1493
1494         LOG_DEBUG("'ft2232' interface using libftdi with '%s' layout (%4.4x:%4.4x)",
1495                 ft2232_layout, vid, pid);
1496
1497         if (ftdi_init(&ftdic) < 0)
1498                 return ERROR_JTAG_INIT_FAILED;
1499
1500         /* context, vendor id, product id */
1501         if (ftdi_usb_open_desc(&ftdic, vid, pid, ft2232_device_desc,
1502                 ft2232_serial) < 0) {
1503                 if (more)
1504                         LOG_WARNING("unable to open ftdi device (trying more): %s",
1505                                 ftdic.error_str);
1506                 else
1507                         LOG_ERROR("unable to open ftdi device: %s", ftdic.error_str);
1508                 *try_more = 1;
1509                 return ERROR_JTAG_INIT_FAILED;
1510         }
1511
1512         if (ftdi_set_interface(&ftdic, INTERFACE_A) < 0)
1513         {
1514                 LOG_ERROR("unable to select FT2232 channel A: %s", ftdic.error_str);
1515                 return ERROR_JTAG_INIT_FAILED;
1516         }
1517
1518         if (ftdi_usb_reset(&ftdic) < 0)
1519         {
1520                 LOG_ERROR("unable to reset ftdi device");
1521                 return ERROR_JTAG_INIT_FAILED;
1522         }
1523
1524         if (ftdi_set_latency_timer(&ftdic, ft2232_latency) < 0)
1525         {
1526                 LOG_ERROR("unable to set latency timer");
1527                 return ERROR_JTAG_INIT_FAILED;
1528         }
1529
1530         if (ftdi_get_latency_timer(&ftdic, &latency_timer) < 0)
1531         {
1532                 LOG_ERROR("unable to get latency timer");
1533                 return ERROR_JTAG_INIT_FAILED;
1534         }
1535         else
1536         {
1537                 LOG_DEBUG("current latency timer: %i", latency_timer);
1538         }
1539
1540         ftdi_set_bitmode(&ftdic, 0x0b, 2); /* ctx, JTAG I/O mask */
1541
1542         return ERROR_OK;
1543 }
1544
1545 static int ft2232_purge_libftdi(void)
1546 {
1547         if (ftdi_usb_purge_buffers(&ftdic) < 0)
1548         {
1549                 LOG_ERROR("ftdi_purge_buffers: %s", ftdic.error_str);
1550                 return ERROR_JTAG_INIT_FAILED;
1551         }
1552
1553         return ERROR_OK;
1554 }
1555 #endif /* BUILD_FT2232_LIBFTDI == 1 */
1556
1557 int ft2232_init(void)
1558 {
1559         u8 buf[1];
1560         int retval;
1561         u32 bytes_written;
1562         ft2232_layout_t *cur_layout = ft2232_layouts;
1563         int i;
1564
1565         if ((ft2232_layout == NULL) || (ft2232_layout[0] == 0))
1566         {
1567                 ft2232_layout = "usbjtag";
1568                 LOG_WARNING("No ft2232 layout specified, using default 'usbjtag'");
1569         }
1570
1571         while (cur_layout->name)
1572         {
1573                 if (strcmp(cur_layout->name, ft2232_layout) == 0)
1574                 {
1575                         layout = cur_layout;
1576                         break;
1577                 }
1578                 cur_layout++;
1579         }
1580
1581         if (!layout)
1582         {
1583                 LOG_ERROR("No matching layout found for %s", ft2232_layout);
1584                 return ERROR_JTAG_INIT_FAILED;
1585         }
1586
1587         for (i = 0; 1; i++) {
1588                 /*
1589                  * "more indicates that there are more IDs to try, so we should
1590                  * not print an error for an ID mismatch (but for anything
1591                  * else, we should).
1592                  *
1593                  * try_more indicates that the error code returned indicates an
1594                  * ID mismatch (and nothing else) and that we should proceeed
1595                  * with the next ID pair.
1596                  */
1597                 int more = ft2232_vid[i+1] || ft2232_pid[i+1];
1598                 int try_more = 0;
1599
1600 #if BUILD_FT2232_FTD2XX == 1
1601                 retval = ft2232_init_ftd2xx(ft2232_vid[i], ft2232_pid[i],
1602                         more, &try_more);
1603 #elif BUILD_FT2232_LIBFTDI == 1
1604                 retval = ft2232_init_libftdi(ft2232_vid[i], ft2232_pid[i],
1605                         more, &try_more);
1606 #endif
1607                 if (retval >= 0)
1608                         break;
1609                 if (!more || !try_more)
1610                         return retval;
1611         }
1612
1613         ft2232_buffer_size = 0;
1614         ft2232_buffer = malloc(FT2232_BUFFER_SIZE);
1615
1616         if (layout->init() != ERROR_OK)
1617                 return ERROR_JTAG_INIT_FAILED;
1618
1619         ft2232_speed(jtag_speed);
1620
1621         buf[0] = 0x85; /* Disconnect TDI/DO to TDO/DI for Loopback */
1622         if (((retval = ft2232_write(buf, 1, &bytes_written)) != ERROR_OK) || (bytes_written != 1))
1623         {
1624                 LOG_ERROR("couldn't write to FT2232 to disable loopback");
1625                 return ERROR_JTAG_INIT_FAILED;
1626         }
1627
1628 #if BUILD_FT2232_FTD2XX == 1
1629         return ft2232_purge_ftd2xx();
1630 #elif BUILD_FT2232_LIBFTDI == 1
1631         return ft2232_purge_libftdi();
1632 #endif
1633
1634         return ERROR_OK;
1635 }
1636
1637 int usbjtag_init(void)
1638 {
1639         u8 buf[3];
1640         u32 bytes_written;
1641
1642         low_output = 0x08;
1643         low_direction = 0x0b;
1644
1645         if (strcmp(ft2232_layout, "usbjtag") == 0)
1646         {
1647                 nTRST = 0x10;
1648                 nTRSTnOE = 0x10;
1649                 nSRST = 0x40;
1650                 nSRSTnOE = 0x40;
1651         }
1652         else if (strcmp(ft2232_layout, "signalyzer") == 0)
1653         {
1654                 nTRST = 0x10;
1655                 nTRSTnOE = 0x10;
1656                 nSRST = 0x20;
1657                 nSRSTnOE = 0x20;
1658         }
1659         else if (strcmp(ft2232_layout, "evb_lm3s811") == 0)
1660         {
1661                 nTRST = 0x0;
1662                 nTRSTnOE = 0x00;
1663                 nSRST = 0x20;
1664                 nSRSTnOE = 0x20;
1665                 low_output = 0x88;
1666                 low_direction = 0x8b;
1667         }
1668         else
1669         {
1670                 LOG_ERROR("BUG: usbjtag_init called for unknown layout '%s'", ft2232_layout);
1671                 return ERROR_JTAG_INIT_FAILED;
1672         }
1673
1674         if (jtag_reset_config & RESET_TRST_OPEN_DRAIN)
1675         {
1676                 low_direction &= ~nTRSTnOE; /* nTRST input */
1677                 low_output &= ~nTRST; /* nTRST = 0 */
1678         }
1679         else
1680         {
1681                 low_direction |= nTRSTnOE; /* nTRST output */
1682                 low_output |= nTRST; /* nTRST = 1 */
1683         }
1684
1685         if (jtag_reset_config & RESET_SRST_PUSH_PULL)
1686         {
1687                 low_direction |= nSRSTnOE; /* nSRST output */
1688                 low_output |= nSRST; /* nSRST = 1 */
1689         }
1690         else
1691         {
1692                 low_direction &= ~nSRSTnOE; /* nSRST input */
1693                 low_output &= ~nSRST; /* nSRST = 0 */
1694         }
1695
1696         /* initialize low byte for jtag */
1697         buf[0] = 0x80; /* command "set data bits low byte" */
1698         buf[1] = low_output; /* value (TMS=1,TCK=0, TDI=0, xRST high) */
1699         buf[2] = low_direction; /* dir (output=1), TCK/TDI/TMS=out, TDO=in */
1700         LOG_DEBUG("%2.2x %2.2x %2.2x", buf[0], buf[1], buf[2]);
1701
1702         if (((ft2232_write(buf, 3, &bytes_written)) != ERROR_OK) || (bytes_written != 3))
1703         {
1704                 LOG_ERROR("couldn't initialize FT2232 with 'USBJTAG' layout");
1705                 return ERROR_JTAG_INIT_FAILED;
1706         }
1707
1708         return ERROR_OK;
1709 }
1710
1711 int jtagkey_init(void)
1712 {
1713         u8 buf[3];
1714         u32 bytes_written;
1715
1716         low_output = 0x08;
1717         low_direction = 0x1b;
1718
1719         /* initialize low byte for jtag */
1720         buf[0] = 0x80; /* command "set data bits low byte" */
1721         buf[1] = low_output; /* value (TMS=1,TCK=0, TDI=0, nOE=0) */
1722         buf[2] = low_direction; /* dir (output=1), TCK/TDI/TMS=out, TDO=in, nOE=out */
1723         LOG_DEBUG("%2.2x %2.2x %2.2x", buf[0], buf[1], buf[2]);
1724
1725         if (((ft2232_write(buf, 3, &bytes_written)) != ERROR_OK) || (bytes_written != 3))
1726         {
1727                 LOG_ERROR("couldn't initialize FT2232 with 'JTAGkey' layout");
1728                 return ERROR_JTAG_INIT_FAILED;
1729         }
1730
1731         if (strcmp(layout->name, "jtagkey") == 0)
1732         {
1733                 nTRST = 0x01;
1734                 nTRSTnOE = 0x4;
1735                 nSRST = 0x02;
1736                 nSRSTnOE = 0x08;
1737         }
1738         else if ((strcmp(layout->name, "jtagkey_prototype_v1") == 0) ||
1739                 (strcmp(layout->name, "oocdlink") == 0))
1740         {
1741                 nTRST = 0x02;
1742                 nTRSTnOE = 0x1;
1743                 nSRST = 0x08;
1744                 nSRSTnOE = 0x04;
1745         }
1746         else
1747         {
1748                 LOG_ERROR("BUG: jtagkey_init called for non jtagkey layout");
1749                 exit(-1);
1750         }
1751
1752         high_output = 0x0;
1753         high_direction = 0x0f;
1754
1755         if (jtag_reset_config & RESET_TRST_OPEN_DRAIN)
1756         {
1757                 high_output |= nTRSTnOE;
1758                 high_output &= ~nTRST;
1759         }
1760         else
1761         {
1762                 high_output &= ~nTRSTnOE;
1763                 high_output |= nTRST;
1764         }
1765
1766         if (jtag_reset_config & RESET_SRST_PUSH_PULL)
1767         {
1768                 high_output &= ~nSRSTnOE;
1769                 high_output |= nSRST;
1770         }
1771         else
1772         {
1773                 high_output |= nSRSTnOE;
1774                 high_output &= ~nSRST;
1775         }
1776
1777         /* initialize high port */
1778         buf[0] = 0x82; /* command "set data bits high byte" */
1779         buf[1] = high_output; /* value */
1780         buf[2] = high_direction;   /* all outputs (xRST and xRSTnOE) */
1781         LOG_DEBUG("%2.2x %2.2x %2.2x", buf[0], buf[1], buf[2]);
1782
1783         if (((ft2232_write(buf, 3, &bytes_written)) != ERROR_OK) || (bytes_written != 3))
1784         {
1785                 LOG_ERROR("couldn't initialize FT2232 with 'JTAGkey' layout");
1786                 return ERROR_JTAG_INIT_FAILED;
1787         }
1788
1789         return ERROR_OK;
1790 }
1791
1792 int olimex_jtag_init(void)
1793 {
1794         u8 buf[3];
1795         u32 bytes_written;
1796
1797         low_output = 0x08;
1798         low_direction = 0x1b;
1799
1800         /* initialize low byte for jtag */
1801         buf[0] = 0x80; /* command "set data bits low byte" */
1802         buf[1] = low_output; /* value (TMS=1,TCK=0, TDI=0, nOE=0) */
1803         buf[2] = low_direction; /* dir (output=1), TCK/TDI/TMS=out, TDO=in, nOE=out */
1804         LOG_DEBUG("%2.2x %2.2x %2.2x", buf[0], buf[1], buf[2]);
1805
1806         if (((ft2232_write(buf, 3, &bytes_written)) != ERROR_OK) || (bytes_written != 3))
1807         {
1808                 LOG_ERROR("couldn't initialize FT2232 with 'JTAGkey' layout");
1809                 return ERROR_JTAG_INIT_FAILED;
1810         }
1811
1812         nTRST = 0x01;
1813         nTRSTnOE = 0x4;
1814         nSRST = 0x02;
1815         nSRSTnOE = 0x00; /* no output enable for nSRST */
1816
1817         high_output = 0x0;
1818         high_direction = 0x0f;
1819
1820         if (jtag_reset_config & RESET_TRST_OPEN_DRAIN)
1821         {
1822                 high_output |= nTRSTnOE;
1823                 high_output &= ~nTRST;
1824         }
1825         else
1826         {
1827                 high_output &= ~nTRSTnOE;
1828                 high_output |= nTRST;
1829         }
1830
1831         if (jtag_reset_config & RESET_SRST_PUSH_PULL)
1832         {
1833                 LOG_ERROR("can't set nSRST to push-pull on the Olimex ARM-USB-OCD");
1834         }
1835         else
1836         {
1837                 high_output &= ~nSRST;
1838         }
1839
1840         /* turn red LED on */
1841         high_output |= 0x08;
1842
1843         /* initialize high port */
1844         buf[0] = 0x82; /* command "set data bits high byte" */
1845         buf[1] = high_output; /* value */
1846         buf[2] = high_direction;   /* all outputs (xRST and xRSTnOE) */
1847         LOG_DEBUG("%2.2x %2.2x %2.2x", buf[0], buf[1], buf[2]);
1848
1849         if (((ft2232_write(buf, 3, &bytes_written)) != ERROR_OK) || (bytes_written != 3))
1850         {
1851                 LOG_ERROR("couldn't initialize FT2232 with 'JTAGkey' layout");
1852                 return ERROR_JTAG_INIT_FAILED;
1853         }
1854
1855         return ERROR_OK;
1856 }
1857
1858 int flyswatter_init(void)
1859 {
1860         u8 buf[3];
1861         u32 bytes_written;
1862
1863         low_output = 0x18;
1864         low_direction = 0xfb;
1865
1866         /* initialize low byte for jtag */
1867         buf[0] = 0x80; /* command "set data bits low byte" */
1868         buf[1] = low_output; /* value (TMS=1,TCK=0, TDI=0, nOE=0) */
1869         buf[2] = low_direction; /* dir (output=1), TCK/TDI/TMS=out, TDO=in, nOE[12]=out, n[ST]srst=out */
1870         LOG_DEBUG("%2.2x %2.2x %2.2x", buf[0], buf[1], buf[2]);
1871
1872         if (((ft2232_write(buf, 3, &bytes_written)) != ERROR_OK) || (bytes_written != 3))
1873         {
1874                 LOG_ERROR("couldn't initialize FT2232 with 'flyswatter' layout");
1875                 return ERROR_JTAG_INIT_FAILED;
1876         }
1877
1878         nTRST = 0x10;
1879         nTRSTnOE = 0x0; /* not output enable for nTRST */
1880         nSRST = 0x20;
1881         nSRSTnOE = 0x00; /* no output enable for nSRST */
1882
1883         high_output = 0x00;
1884         high_direction = 0x0c;
1885
1886         /* turn red LED1 on, LED2 off */
1887         high_output |= 0x08;
1888
1889         /* initialize high port */
1890         buf[0] = 0x82; /* command "set data bits high byte" */
1891         buf[1] = high_output; /* value */
1892         buf[2] = high_direction;   /* all outputs (xRST and xRSTnOE) */
1893         LOG_DEBUG("%2.2x %2.2x %2.2x", buf[0], buf[1], buf[2]);
1894
1895         if (((ft2232_write(buf, 3, &bytes_written)) != ERROR_OK) || (bytes_written != 3))
1896         {
1897                 LOG_ERROR("couldn't initialize FT2232 with 'flyswatter' layout");
1898                 return ERROR_JTAG_INIT_FAILED;
1899         }
1900
1901         return ERROR_OK;
1902 }
1903
1904 int turtle_init(void)
1905 {
1906         u8 buf[3];
1907         u32 bytes_written;
1908
1909         low_output = 0x08;
1910         low_direction = 0x5b;
1911
1912         /* initialize low byte for jtag */
1913         buf[0] = 0x80; /* command "set data bits low byte" */
1914         buf[1] = low_output; /* value (TMS=1,TCK=0, TDI=0, nOE=0) */
1915         buf[2] = low_direction; /* dir (output=1), TCK/TDI/TMS=out, TDO=in, nOE=out */
1916         LOG_DEBUG("%2.2x %2.2x %2.2x", buf[0], buf[1], buf[2]);
1917
1918         if (((ft2232_write(buf, 3, &bytes_written)) != ERROR_OK) || (bytes_written != 3))
1919         {
1920                 LOG_ERROR("couldn't initialize FT2232 with 'turtelizer2' layout");
1921                 return ERROR_JTAG_INIT_FAILED;
1922         }
1923
1924         nSRST = 0x40;
1925
1926         high_output = 0x00;
1927         high_direction = 0x0C;
1928
1929         /* initialize high port */
1930         buf[0] = 0x82; /* command "set data bits high byte" */
1931         buf[1] = high_output;
1932         buf[2] = high_direction;
1933         LOG_DEBUG("%2.2x %2.2x %2.2x", buf[0], buf[1], buf[2]);
1934
1935         if (((ft2232_write(buf, 3, &bytes_written)) != ERROR_OK) || (bytes_written != 3))
1936         {
1937                 LOG_ERROR("couldn't initialize FT2232 with 'turtelizer2' layout");
1938                 return ERROR_JTAG_INIT_FAILED;
1939         }
1940
1941         return ERROR_OK;
1942 }
1943
1944 int comstick_init(void)
1945 {
1946         u8 buf[3];
1947         u32 bytes_written;
1948
1949         low_output = 0x08;
1950         low_direction = 0x0b;
1951
1952         /* initialize low byte for jtag */
1953         buf[0] = 0x80; /* command "set data bits low byte" */
1954         buf[1] = low_output; /* value (TMS=1,TCK=0, TDI=0, nOE=0) */
1955         buf[2] = low_direction; /* dir (output=1), TCK/TDI/TMS=out, TDO=in, nOE=out */
1956         LOG_DEBUG("%2.2x %2.2x %2.2x", buf[0], buf[1], buf[2]);
1957
1958         if (((ft2232_write(buf, 3, &bytes_written)) != ERROR_OK) || (bytes_written != 3))
1959         {
1960                 LOG_ERROR("couldn't initialize FT2232 with 'comstick' layout");
1961                 return ERROR_JTAG_INIT_FAILED;
1962         }
1963
1964         nTRST = 0x01;
1965         nTRSTnOE = 0x00; /* no output enable for nTRST */
1966         nSRST = 0x02;
1967         nSRSTnOE = 0x00; /* no output enable for nSRST */
1968
1969         high_output = 0x03;
1970         high_direction = 0x03;
1971
1972         /* initialize high port */
1973         buf[0] = 0x82; /* command "set data bits high byte" */
1974         buf[1] = high_output;
1975         buf[2] = high_direction;
1976         LOG_DEBUG("%2.2x %2.2x %2.2x", buf[0], buf[1], buf[2]);
1977
1978         if (((ft2232_write(buf, 3, &bytes_written)) != ERROR_OK) || (bytes_written != 3))
1979         {
1980                 LOG_ERROR("couldn't initialize FT2232 with 'comstick' layout");
1981                 return ERROR_JTAG_INIT_FAILED;
1982         }
1983
1984         return ERROR_OK;
1985 }
1986
1987 int stm32stick_init(void)
1988 {
1989         u8 buf[3];
1990         u32 bytes_written;
1991
1992         low_output = 0x88;
1993         low_direction = 0x8b;
1994
1995         /* initialize low byte for jtag */
1996         buf[0] = 0x80; /* command "set data bits low byte" */
1997         buf[1] = low_output; /* value (TMS=1,TCK=0, TDI=0, nOE=0) */
1998         buf[2] = low_direction; /* dir (output=1), TCK/TDI/TMS=out, TDO=in, nOE=out */
1999         LOG_DEBUG("%2.2x %2.2x %2.2x", buf[0], buf[1], buf[2]);
2000
2001         if (((ft2232_write(buf, 3, &bytes_written)) != ERROR_OK) || (bytes_written != 3))
2002         {
2003                 LOG_ERROR("couldn't initialize FT2232 with 'stm32stick' layout");
2004                 return ERROR_JTAG_INIT_FAILED;
2005         }
2006
2007         nTRST = 0x01;
2008         nTRSTnOE = 0x00; /* no output enable for nTRST */
2009         nSRST = 0x80;
2010         nSRSTnOE = 0x00; /* no output enable for nSRST */
2011
2012         high_output = 0x01;
2013         high_direction = 0x03;
2014
2015         /* initialize high port */
2016         buf[0] = 0x82; /* command "set data bits high byte" */
2017         buf[1] = high_output;
2018         buf[2] = high_direction;
2019         LOG_DEBUG("%2.2x %2.2x %2.2x", buf[0], buf[1], buf[2]);
2020
2021         if (((ft2232_write(buf, 3, &bytes_written)) != ERROR_OK) || (bytes_written != 3))
2022         {
2023                 LOG_ERROR("couldn't initialize FT2232 with 'stm32stick' layout");
2024                 return ERROR_JTAG_INIT_FAILED;
2025         }
2026
2027         return ERROR_OK;
2028 }
2029
2030 void olimex_jtag_blink(void)
2031 {
2032         /* Olimex ARM-USB-OCD has a LED connected to ACBUS3
2033          * ACBUS3 is bit 3 of the GPIOH port
2034          */
2035         if (high_output & 0x08)
2036         {
2037                 /* set port pin high */
2038                 high_output &= 0x07;
2039         }
2040         else
2041         {
2042                 /* set port pin low */
2043                 high_output |= 0x08;
2044         }
2045
2046         BUFFER_ADD = 0x82;
2047         BUFFER_ADD = high_output;
2048         BUFFER_ADD = high_direction;
2049 }
2050
2051 void turtle_jtag_blink(void)
2052 {
2053         /*
2054    * Turtelizer2 has two LEDs connected to ACBUS2 and ACBUS3
2055          */
2056         if (high_output & 0x08)
2057         {
2058                 high_output = 0x04;
2059         }
2060         else
2061         {
2062                 high_output = 0x08;
2063         }
2064
2065         BUFFER_ADD = 0x82;
2066         BUFFER_ADD = high_output;
2067         BUFFER_ADD = high_direction;
2068 }
2069
2070 int ft2232_quit(void)
2071 {
2072 #if BUILD_FT2232_FTD2XX == 1
2073         FT_STATUS status;
2074
2075         status = FT_Close(ftdih);
2076 #elif BUILD_FT2232_LIBFTDI == 1
2077         ftdi_disable_bitbang(&ftdic);
2078
2079         ftdi_usb_close(&ftdic);
2080
2081         ftdi_deinit(&ftdic);
2082 #endif
2083
2084         free(ft2232_buffer);
2085         ft2232_buffer = NULL;
2086
2087         return ERROR_OK;
2088 }
2089
2090 int ft2232_handle_device_desc_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2091 {
2092         if (argc == 1)
2093         {
2094                 ft2232_device_desc = strdup(args[0]);
2095         }
2096         else
2097         {
2098                 LOG_ERROR("expected exactly one argument to ft2232_device_desc <description>");
2099         }
2100
2101         return ERROR_OK;
2102 }
2103
2104 int ft2232_handle_serial_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2105 {
2106         if (argc == 1)
2107         {
2108                 ft2232_serial = strdup(args[0]);
2109         }
2110         else
2111         {
2112                 LOG_ERROR("expected exactly one argument to ft2232_serial <serial-number>");
2113         }
2114
2115         return ERROR_OK;
2116 }
2117
2118 int ft2232_handle_layout_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2119 {
2120         if (argc == 0)
2121                 return ERROR_OK;
2122
2123         ft2232_layout = malloc(strlen(args[0]) + 1);
2124         strcpy(ft2232_layout, args[0]);
2125
2126         return ERROR_OK;
2127 }
2128
2129 int ft2232_handle_vid_pid_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2130 {
2131         int i;
2132
2133         if (argc > MAX_USB_IDS*2) {
2134                 LOG_WARNING("ignoring extra IDs in ft2232_vid_pid "
2135                         "(maximum is %d pairs)", MAX_USB_IDS);
2136                 argc = MAX_USB_IDS*2;
2137         }
2138         if (argc < 2 || (argc & 1))
2139         {
2140                 LOG_WARNING("incomplete ft2232_vid_pid configuration directive");
2141                 if (argc < 2)
2142                         return ERROR_OK;
2143         }
2144
2145         for (i = 0; i+1 < argc; i += 2) {
2146                 ft2232_vid[i >> 1] = strtol(args[i], NULL, 0);
2147                 ft2232_pid[i >> 1] = strtol(args[i+1], NULL, 0);
2148         }
2149         /*
2150          * Explicitly terminate, in case there are multiples instances of
2151          * ft2232_vid_pid.
2152          */
2153         ft2232_vid[i >> 1] = ft2232_pid[i >> 1] = 0;
2154
2155         return ERROR_OK;
2156 }
2157
2158 int ft2232_handle_latency_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2159 {
2160         if (argc == 1)
2161         {
2162                 ft2232_latency = atoi(args[0]);
2163         }
2164         else
2165         {
2166                 LOG_ERROR("expected exactly one argument to ft2232_latency <ms>");
2167         }
2168
2169         return ERROR_OK;
2170 }