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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 /* 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         if (khz==0)
 277         {
 278                 LOG_ERROR("RCLK not supported");
 279                 return ERROR_FAIL;
 280         }
 281         /* Take a look in the FT2232 manual,
 282          * AN2232C-01 Command Processor for
 283          * MPSSE and MCU Host Bus. Chapter 3.8
 284          *
 285          * We will calc here with a multiplier
 286          * of 10 for better rounding later. */
 287
 288         /* Calc speed, (6000 / khz) - 1 */
 289         /* Use 65000 for better rounding */
 290         *jtag_speed = (60000 / khz) - 10;
 291
 292         /* Add 0.9 for rounding */
 293         *jtag_speed += 9;
 294
 295         /* Calc real speed */
 296         *jtag_speed = *jtag_speed / 10;
 297
 298         /* Check if speed is greater than 0 */
 299         if (*jtag_speed < 0)
 300         {
 301                 *jtag_speed = 0;
 302         }
 303
 304         /* Check max value */
 305         if (*jtag_speed > 0xFFFF)
 306         {
 307                 *jtag_speed = 0xFFFF;
 308         }
 309
 310         return ERROR_OK;
 311 }
 312
 313 int ft2232_register_commands(struct command_context_s *cmd_ctx)
 314 {
 315         register_command(cmd_ctx, NULL, "ft2232_device_desc", ft2232_handle_device_desc_command,
 316                 COMMAND_CONFIG, NULL);
 317         register_command(cmd_ctx, NULL, "ft2232_serial", ft2232_handle_serial_command,
 318                 COMMAND_CONFIG, NULL);
 319         register_command(cmd_ctx, NULL, "ft2232_layout", ft2232_handle_layout_command,
 320                 COMMAND_CONFIG, NULL);
 321         register_command(cmd_ctx, NULL, "ft2232_vid_pid", ft2232_handle_vid_pid_command,
 322                                          COMMAND_CONFIG, NULL);
 323         register_command(cmd_ctx, NULL, "ft2232_latency", ft2232_handle_latency_command,
 324                                          COMMAND_CONFIG, NULL);
 325         return ERROR_OK;
 326 }
 327
 328 void ft2232_end_state(enum tap_state state)
 329 {
 330         if (tap_move_map[state] != -1)
 331                 end_state = state;
 332         else
 333         {
 334                 LOG_ERROR("BUG: %i is not a valid end state", state);
 335                 exit(-1);
 336         }
 337 }
 338
 339 void ft2232_read_scan(enum scan_type type, u8* buffer, int scan_size)
 340 {
 341         int num_bytes = ((scan_size + 7) / 8);
 342         int bits_left = scan_size;
 343         int cur_byte = 0;
 344
 345         while(num_bytes-- > 1)
 346         {
 347                 buffer[cur_byte] = BUFFER_READ;
 348                 cur_byte++;
 349                 bits_left -= 8;
 350         }
 351
 352         buffer[cur_byte] = 0x0;
 353
 354         if (bits_left > 1)
 355         {
 356                 buffer[cur_byte] = BUFFER_READ >> 1;
 357         }
 358
 359         buffer[cur_byte] = (buffer[cur_byte] | ((BUFFER_READ & 0x02) << 6)) >> (8 - bits_left);
 360
 361 }
 362
 363 void ft2232_debug_dump_buffer(void)
 364 {
 365         int i;
 366         char line[256];
 367         char *line_p = line;
 368
 369         for (i = 0; i < ft2232_buffer_size; i++)
 370         {
 371                 line_p += snprintf(line_p, 256 - (line_p - line), "%2.2x ", ft2232_buffer[i]);
 372                 if (i % 16 == 15)
 373                 {
 374                         LOG_DEBUG("%s", line);
 375                         line_p = line;
 376                 }
 377         }
 378
 379         if (line_p != line)
 380                 LOG_DEBUG("%s", line);
 381 }
 382
 383 int ft2232_send_and_recv(jtag_command_t *first, jtag_command_t *last)
 384 {
 385         jtag_command_t *cmd;
 386         u8 *buffer;
 387         int scan_size;
 388         enum scan_type type;
 389         int retval;
 390         u32 bytes_written;
 391         u32 bytes_read;
 392
 393 #ifdef _DEBUG_USB_IO_
 394         struct timeval start, inter, inter2, end;
 395         struct timeval d_inter, d_inter2, d_end;
 396 #endif
 397
 398 #ifdef _DEBUG_USB_COMMS_
 399         LOG_DEBUG("write buffer (size %i):", ft2232_buffer_size);
 400         ft2232_debug_dump_buffer();
 401 #endif
 402
 403 #ifdef _DEBUG_USB_IO_
 404         gettimeofday(&start, NULL);
 405 #endif
 406
 407         if ((retval = ft2232_write(ft2232_buffer, ft2232_buffer_size, &bytes_written)) != ERROR_OK)
 408         {
 409                 LOG_ERROR("couldn't write MPSSE commands to FT2232");
 410                 exit(-1);
 411         }
 412
 413 #ifdef _DEBUG_USB_IO_
 414         gettimeofday(&inter, NULL);
 415 #endif
 416
 417         if (ft2232_expect_read)
 418         {
 419                 int timeout = 100;
 420                 ft2232_buffer_size = 0;
 421
 422 #ifdef _DEBUG_USB_IO_
 423                 gettimeofday(&inter2, NULL);
 424 #endif
 425
 426                 if ((retval = ft2232_read(ft2232_buffer, ft2232_expect_read, &bytes_read)) != ERROR_OK)
 427                 {
 428                         LOG_ERROR("couldn't read from FT2232");
 429                         exit(-1);
 430                 }
 431
 432 #ifdef _DEBUG_USB_IO_
 433                 gettimeofday(&end, NULL);
 434
 435                 timeval_subtract(&d_inter, &inter, &start);
 436                 timeval_subtract(&d_inter2, &inter2, &start);
 437                 timeval_subtract(&d_end, &end, &start);
 438
 439                 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);
 440 #endif
 441
 442
 443                 ft2232_buffer_size = bytes_read;
 444
 445                 if (ft2232_expect_read != ft2232_buffer_size)
 446                 {
 447                         LOG_ERROR("ft2232_expect_read (%i) != ft2232_buffer_size (%i) (%i retries)", ft2232_expect_read, ft2232_buffer_size, 100 - timeout);
 448                         ft2232_debug_dump_buffer();
 449
 450                         exit(-1);
 451                 }
 452
 453 #ifdef _DEBUG_USB_COMMS_
 454                 LOG_DEBUG("read buffer (%i retries): %i bytes", 100 - timeout, ft2232_buffer_size);
 455                 ft2232_debug_dump_buffer();
 456 #endif
 457         }
 458
 459         ft2232_expect_read = 0;
 460         ft2232_read_pointer = 0;
 461
 462         /* return ERROR_OK, unless a jtag_read_buffer returns a failed check
 463          * that wasn't handled by a caller-provided error handler
 464          */
 465         retval = ERROR_OK;
 466
 467         cmd = first;
 468         while (cmd != last)
 469         {
 470                 switch (cmd->type)
 471                 {
 472                         case JTAG_SCAN:
 473                                 type = jtag_scan_type(cmd->cmd.scan);
 474                                 if (type != SCAN_OUT)
 475                                 {
 476                                         scan_size = jtag_scan_size(cmd->cmd.scan);
 477                                         buffer = calloc(CEIL(scan_size, 8), 1);
 478                                         ft2232_read_scan(type, buffer, scan_size);
 479                                         if (jtag_read_buffer(buffer, cmd->cmd.scan) != ERROR_OK)
 480                                                 retval = ERROR_JTAG_QUEUE_FAILED;
 481                                         free(buffer);
 482                                 }
 483                                 break;
 484                         default:
 485                                 break;
 486                 }
 487                 cmd = cmd->next;
 488         }
 489
 490         ft2232_buffer_size = 0;
 491
 492         return retval;
 493 }
 494
 495 void ft2232_add_pathmove(pathmove_command_t *cmd)
 496 {
 497         int num_states = cmd->num_states;
 498         u8 tms_byte;
 499         int state_count;
 500
 501         state_count = 0;
 502         while (num_states)
 503         {
 504                 int bit_count = 0;
 505
 506                 int num_states_batch = num_states > 7 ? 7 : num_states;
 507
 508                 tms_byte = 0x0;
 509                 /* command "Clock Data to TMS/CS Pin (no Read)" */
 510                 BUFFER_ADD = 0x4b;
 511                 /* number of states remaining */
 512                 BUFFER_ADD = num_states_batch - 1;
 513
 514                 while (num_states_batch--)
 515                 {
 516                         if (tap_transitions[cur_state].low == cmd->path[state_count])
 517                                 buf_set_u32(&tms_byte, bit_count++, 1, 0x0);
 518                         else if (tap_transitions[cur_state].high == cmd->path[state_count])
 519                                 buf_set_u32(&tms_byte, bit_count++, 1, 0x1);
 520                         else
 521                         {
 522                                 LOG_ERROR("BUG: %s -> %s isn't a valid TAP transition", tap_state_strings[cur_state], tap_state_strings[cmd->path[state_count]]);
 523                                 exit(-1);
 524                         }
 525
 526                         cur_state = cmd->path[state_count];
 527                         state_count++;
 528                         num_states--;
 529                 }
 530
 531                 BUFFER_ADD = tms_byte;
 532         }
 533
 534         end_state = cur_state;
 535 }
 536
 537 void ft2232_add_scan(int ir_scan, enum scan_type type, u8 *buffer, int scan_size)
 538 {
 539         int num_bytes = (scan_size + 7) / 8;
 540         int bits_left = scan_size;
 541         int cur_byte = 0;
 542         int last_bit;
 543
 544         if (!((!ir_scan && (cur_state == TAP_SD)) || (ir_scan && (cur_state == TAP_SI))))
 545         {
 546                 /* command "Clock Data to TMS/CS Pin (no Read)" */
 547                 BUFFER_ADD = 0x4b;
 548                 /* scan 7 bit */
 549                 BUFFER_ADD = 0x6;
 550                 /* TMS data bits */
 551                 if (ir_scan)
 552                 {
 553                         BUFFER_ADD = TAP_MOVE(cur_state, TAP_SI);
 554                         cur_state = TAP_SI;
 555                 }
 556                 else
 557                 {
 558                         BUFFER_ADD = TAP_MOVE(cur_state, TAP_SD);
 559                         cur_state = TAP_SD;
 560                 }
 561                 /* LOG_DEBUG("added TMS scan (no read)"); */
 562         }
 563
 564         /* add command for complete bytes */
 565         while (num_bytes > 1)
 566         {
 567                 int thisrun_bytes;
 568                 if (type == SCAN_IO)
 569                 {
 570                         /* Clock Data Bytes In and Out LSB First */
 571                         BUFFER_ADD = 0x39;
 572                         /* LOG_DEBUG("added TDI bytes (io %i)", num_bytes); */
 573                 }
 574                 else if (type == SCAN_OUT)
 575                 {
 576                         /* Clock Data Bytes Out on -ve Clock Edge LSB First (no Read) */
 577                         BUFFER_ADD = 0x19;
 578                         /* LOG_DEBUG("added TDI bytes (o)"); */
 579                 }
 580                 else if (type == SCAN_IN)
 581                 {
 582                         /* Clock Data Bytes In on +ve Clock Edge LSB First (no Write) */
 583                         BUFFER_ADD = 0x28;
 584                         /* LOG_DEBUG("added TDI bytes (i %i)", num_bytes); */
 585                 }
 586                 thisrun_bytes = (num_bytes > 65537) ? 65536 : (num_bytes - 1);
 587                 num_bytes -= thisrun_bytes;
 588                 BUFFER_ADD = (thisrun_bytes - 1) & 0xff;
 589                 BUFFER_ADD = ((thisrun_bytes - 1) >> 8) & 0xff;
 590                 if (type != SCAN_IN)
 591                 {
 592                         /* add complete bytes */
 593                         while(thisrun_bytes-- > 0)
 594                         {
 595                                 BUFFER_ADD = buffer[cur_byte];
 596                                 cur_byte++;
 597                                 bits_left -= 8;
 598                         }
 599                 }
 600                 else /* (type == SCAN_IN) */
 601                 {
 602                         bits_left -= 8 * (thisrun_bytes);
 603                 }
 604         }
 605
 606         /* the most signifcant bit is scanned during TAP movement */
 607         if (type != SCAN_IN)
 608                 last_bit = (buffer[cur_byte] >> (bits_left - 1)) & 0x1;
 609         else
 610                 last_bit = 0;
 611
 612         /* process remaining bits but the last one */
 613         if (bits_left > 1)
 614         {
 615                 if (type == SCAN_IO)
 616                 {
 617                         /* Clock Data Bits In and Out LSB First */
 618                         BUFFER_ADD = 0x3b;
 619                         /* LOG_DEBUG("added TDI bits (io) %i", bits_left - 1); */
 620                 }
 621                 else if (type == SCAN_OUT)
 622                 {
 623                         /* Clock Data Bits Out on -ve Clock Edge LSB First (no Read) */
 624                         BUFFER_ADD = 0x1b;
 625                         /* LOG_DEBUG("added TDI bits (o)"); */
 626                 }
 627                 else if (type == SCAN_IN)
 628                 {
 629                         /* Clock Data Bits In on +ve Clock Edge LSB First (no Write) */
 630                         BUFFER_ADD = 0x2a;
 631                         /* LOG_DEBUG("added TDI bits (i %i)", bits_left - 1); */
 632                 }
 633                 BUFFER_ADD = bits_left - 2;
 634                 if (type != SCAN_IN)
 635                         BUFFER_ADD = buffer[cur_byte];
 636         }
 637
 638         if ((ir_scan && (end_state == TAP_SI)) ||
 639                 (!ir_scan && (end_state == TAP_SD)))
 640         {
 641                 if (type == SCAN_IO)
 642                 {
 643                         /* Clock Data Bits In and Out LSB First */
 644                         BUFFER_ADD = 0x3b;
 645                         /* LOG_DEBUG("added TDI bits (io) %i", bits_left - 1); */
 646                 }
 647                 else if (type == SCAN_OUT)
 648                 {
 649                         /* Clock Data Bits Out on -ve Clock Edge LSB First (no Read) */
 650                         BUFFER_ADD = 0x1b;
 651                         /* LOG_DEBUG("added TDI bits (o)"); */
 652                 }
 653                 else if (type == SCAN_IN)
 654                 {
 655                         /* Clock Data Bits In on +ve Clock Edge LSB First (no Write) */
 656                         BUFFER_ADD = 0x2a;
 657                         /* LOG_DEBUG("added TDI bits (i %i)", bits_left - 1); */
 658                 }
 659                 BUFFER_ADD = 0x0;
 660                 BUFFER_ADD = last_bit;
 661         }
 662         else
 663         {
 664                 /* move from Shift-IR/DR to end state */
 665                 if (type != SCAN_OUT)
 666                 {
 667                         /* Clock Data to TMS/CS Pin with Read */
 668                         BUFFER_ADD = 0x6b;
 669                         /* LOG_DEBUG("added TMS scan (read)"); */
 670                 }
 671                 else
 672                 {
 673                         /* Clock Data to TMS/CS Pin (no Read) */
 674                         BUFFER_ADD = 0x4b;
 675                         /* LOG_DEBUG("added TMS scan (no read)"); */
 676                 }
 677                 BUFFER_ADD = 0x6;
 678                 BUFFER_ADD = TAP_MOVE(cur_state, end_state) | (last_bit << 7);
 679                 cur_state = end_state;
 680         }
 681 }
 682
 683 int ft2232_large_scan(scan_command_t *cmd, enum scan_type type, u8 *buffer, int scan_size)
 684 {
 685         int num_bytes = (scan_size + 7) / 8;
 686         int bits_left = scan_size;
 687         int cur_byte = 0;
 688         int last_bit;
 689         u8 *receive_buffer = malloc(CEIL(scan_size, 8));
 690         u8 *receive_pointer = receive_buffer;
 691         u32 bytes_written;
 692         u32 bytes_read;
 693         int retval;
 694         int thisrun_read = 0;
 695
 696         if (cmd->ir_scan)
 697         {
 698                 LOG_ERROR("BUG: large IR scans are not supported");
 699                 exit(-1);
 700         }
 701
 702         if (cur_state != TAP_SD)
 703         {
 704                 /* command "Clock Data to TMS/CS Pin (no Read)" */
 705                 BUFFER_ADD = 0x4b;
 706                 /* scan 7 bit */
 707                 BUFFER_ADD = 0x6;
 708                 /* TMS data bits */
 709                 BUFFER_ADD = TAP_MOVE(cur_state, TAP_SD);
 710                 cur_state = TAP_SD;
 711         }
 712
 713         if ((retval = ft2232_write(ft2232_buffer, ft2232_buffer_size, &bytes_written)) != ERROR_OK)
 714         {
 715                 LOG_ERROR("couldn't write MPSSE commands to FT2232");
 716                 exit(-1);
 717         }
 718         LOG_DEBUG("ft2232_buffer_size: %i, bytes_written: %i", ft2232_buffer_size, bytes_written);
 719         ft2232_buffer_size = 0;
 720
 721         /* add command for complete bytes */
 722         while (num_bytes > 1)
 723         {
 724                 int thisrun_bytes;
 725
 726                 if (type == SCAN_IO)
 727                 {
 728                         /* Clock Data Bytes In and Out LSB First */
 729                         BUFFER_ADD = 0x39;
 730                         /* LOG_DEBUG("added TDI bytes (io %i)", num_bytes); */
 731                 }
 732                 else if (type == SCAN_OUT)
 733                 {
 734                         /* Clock Data Bytes Out on -ve Clock Edge LSB First (no Read) */
 735                         BUFFER_ADD = 0x19;
 736                         /* LOG_DEBUG("added TDI bytes (o)"); */
 737                 }
 738                 else if (type == SCAN_IN)
 739                 {
 740                         /* Clock Data Bytes In on +ve Clock Edge LSB First (no Write) */
 741                         BUFFER_ADD = 0x28;
 742                         /* LOG_DEBUG("added TDI bytes (i %i)", num_bytes); */
 743                 }
 744                 thisrun_bytes = (num_bytes > 65537) ? 65536 : (num_bytes - 1);
 745                 thisrun_read = thisrun_bytes;
 746                 num_bytes -= thisrun_bytes;
 747                 BUFFER_ADD = (thisrun_bytes - 1) & 0xff;
 748                 BUFFER_ADD = ((thisrun_bytes - 1) >> 8) & 0xff;
 749                 if (type != SCAN_IN)
 750                 {
 751                         /* add complete bytes */
 752                         while(thisrun_bytes-- > 0)
 753                         {
 754                                 BUFFER_ADD = buffer[cur_byte];
 755                                 cur_byte++;
 756                                 bits_left -= 8;
 757                         }
 758                 }
 759                 else /* (type == SCAN_IN) */
 760                 {
 761                         bits_left -= 8 * (thisrun_bytes);
 762                 }
 763
 764                 if ((retval = ft2232_write(ft2232_buffer, ft2232_buffer_size, &bytes_written)) != ERROR_OK)
 765                 {
 766                         LOG_ERROR("couldn't write MPSSE commands to FT2232");
 767                         exit(-1);
 768                 }
 769                 LOG_DEBUG("ft2232_buffer_size: %i, bytes_written: %i", ft2232_buffer_size, bytes_written);
 770                 ft2232_buffer_size = 0;
 771
 772                 if (type != SCAN_OUT)
 773                 {
 774                         if ((retval = ft2232_read(receive_pointer, thisrun_read, &bytes_read)) != ERROR_OK)
 775                         {
 776                                 LOG_ERROR("couldn't read from FT2232");
 777                                 exit(-1);
 778                         }
 779                         LOG_DEBUG("thisrun_read: %i, bytes_read: %i", thisrun_read, bytes_read);
 780                         receive_pointer += bytes_read;
 781                 }
 782         }
 783
 784         thisrun_read = 0;
 785
 786         /* the most signifcant bit is scanned during TAP movement */
 787         if (type != SCAN_IN)
 788                 last_bit = (buffer[cur_byte] >> (bits_left - 1)) & 0x1;
 789         else
 790                 last_bit = 0;
 791
 792         /* process remaining bits but the last one */
 793         if (bits_left > 1)
 794         {
 795                 if (type == SCAN_IO)
 796                 {
 797                         /* Clock Data Bits In and Out LSB First */
 798                         BUFFER_ADD = 0x3b;
 799                         /* LOG_DEBUG("added TDI bits (io) %i", bits_left - 1); */
 800                 }
 801                 else if (type == SCAN_OUT)
 802                 {
 803                         /* Clock Data Bits Out on -ve Clock Edge LSB First (no Read) */
 804                         BUFFER_ADD = 0x1b;
 805                         /* LOG_DEBUG("added TDI bits (o)"); */
 806                 }
 807                 else if (type == SCAN_IN)
 808                 {
 809                         /* Clock Data Bits In on +ve Clock Edge LSB First (no Write) */
 810                         BUFFER_ADD = 0x2a;
 811                         /* LOG_DEBUG("added TDI bits (i %i)", bits_left - 1); */
 812                 }
 813                 BUFFER_ADD = bits_left - 2;
 814                 if (type != SCAN_IN)
 815                         BUFFER_ADD = buffer[cur_byte];
 816
 817                 if (type != SCAN_OUT)
 818                         thisrun_read += 2;
 819         }
 820
 821         if (end_state == TAP_SD)
 822         {
 823                 if (type == SCAN_IO)
 824                 {
 825                         /* Clock Data Bits In and Out LSB First */
 826                         BUFFER_ADD = 0x3b;
 827                         /* LOG_DEBUG("added TDI bits (io) %i", bits_left - 1); */
 828                 }
 829                 else if (type == SCAN_OUT)
 830                 {
 831                         /* Clock Data Bits Out on -ve Clock Edge LSB First (no Read) */
 832                         BUFFER_ADD = 0x1b;
 833                         /* LOG_DEBUG("added TDI bits (o)"); */
 834                 }
 835                 else if (type == SCAN_IN)
 836                 {
 837                         /* Clock Data Bits In on +ve Clock Edge LSB First (no Write) */
 838                         BUFFER_ADD = 0x2a;
 839                         /* LOG_DEBUG("added TDI bits (i %i)", bits_left - 1); */
 840                 }
 841                 BUFFER_ADD = 0x0;
 842                 BUFFER_ADD = last_bit;
 843         }
 844         else
 845         {
 846                 /* move from Shift-IR/DR to end state */
 847                 if (type != SCAN_OUT)
 848                 {
 849                         /* Clock Data to TMS/CS Pin with Read */
 850                         BUFFER_ADD = 0x6b;
 851                         /* LOG_DEBUG("added TMS scan (read)"); */
 852                 }
 853                 else
 854                 {
 855                         /* Clock Data to TMS/CS Pin (no Read) */
 856                         BUFFER_ADD = 0x4b;
 857                         /* LOG_DEBUG("added TMS scan (no read)"); */
 858                 }
 859                 BUFFER_ADD = 0x6;
 860                 BUFFER_ADD = TAP_MOVE(cur_state, end_state) | (last_bit << 7);
 861                 cur_state = end_state;
 862         }
 863
 864         if (type != SCAN_OUT)
 865                 thisrun_read += 1;
 866
 867         if ((retval = ft2232_write(ft2232_buffer, ft2232_buffer_size, &bytes_written)) != ERROR_OK)
 868         {
 869                 LOG_ERROR("couldn't write MPSSE commands to FT2232");
 870                 exit(-1);
 871         }
 872         LOG_DEBUG("ft2232_buffer_size: %i, bytes_written: %i", ft2232_buffer_size, bytes_written);
 873         ft2232_buffer_size = 0;
 874
 875         if (type != SCAN_OUT)
 876         {
 877                 if ((retval = ft2232_read(receive_pointer, thisrun_read, &bytes_read)) != ERROR_OK)
 878                 {
 879                         LOG_ERROR("couldn't read from FT2232");
 880                         exit(-1);
 881                 }
 882                 LOG_DEBUG("thisrun_read: %i, bytes_read: %i", thisrun_read, bytes_read);
 883                 receive_pointer += bytes_read;
 884         }
 885
 886         return ERROR_OK;
 887 }
 888
 889 int ft2232_predict_scan_out(int scan_size, enum scan_type type)
 890 {
 891         int predicted_size = 3;
 892         int num_bytes = (scan_size - 1) / 8;
 893
 894         if (cur_state != TAP_SD)
 895                 predicted_size += 3;
 896
 897         if (type == SCAN_IN)    /* only from device to host */
 898         {
 899                 /* complete bytes */
 900                 predicted_size += (CEIL(num_bytes, 65536)) * 3;
 901                 /* remaining bits - 1 (up to 7) */
 902                 predicted_size += ((scan_size - 1) % 8) ? 2 : 0;
 903         }
 904         else                                    /* host to device, or bidirectional */
 905         {
 906                 /* complete bytes */
 907                 predicted_size += num_bytes + (CEIL(num_bytes, 65536)) * 3;
 908                 /* remaining bits -1 (up to 7) */
 909                 predicted_size += ((scan_size - 1) % 8) ? 3 : 0;
 910         }
 911
 912         return predicted_size;
 913 }
 914
 915 int ft2232_predict_scan_in(int scan_size, enum scan_type type)
 916 {
 917         int predicted_size = 0;
 918
 919         if (type != SCAN_OUT)
 920         {
 921                 /* complete bytes */
 922                 predicted_size += (CEIL(scan_size, 8) > 1) ? (CEIL(scan_size, 8) - 1) : 0;
 923                 /* remaining bits - 1 */
 924                 predicted_size += ((scan_size - 1) % 8) ? 1 : 0;
 925                 /* last bit (from TMS scan) */
 926                 predicted_size += 1;
 927         }
 928
 929         /* LOG_DEBUG("scan_size: %i, predicted_size: %i", scan_size, predicted_size); */
 930
 931         return predicted_size;
 932 }
 933
 934 void usbjtag_reset(int trst, int srst)
 935 {
 936         if (trst == 1)
 937         {
 938                 if (jtag_reset_config & RESET_TRST_OPEN_DRAIN)
 939                         low_direction |= nTRSTnOE;      /* switch to output pin (output is low) */
 940                 else
 941                         low_output &= ~nTRST;   /* switch output low */
 942         }
 943         else if (trst == 0)
 944         {
 945                 if (jtag_reset_config & RESET_TRST_OPEN_DRAIN)
 946                         low_direction &= ~nTRSTnOE; /* switch to input pin (high-Z + internal and external pullup) */
 947                 else
 948                         low_output |= nTRST; /* switch output high */
 949         }
 950
 951         if (srst == 1)
 952         {
 953                 if (jtag_reset_config & RESET_SRST_PUSH_PULL)
 954                         low_output &= ~nSRST;   /* switch output low */
 955                 else
 956                         low_direction |= nSRSTnOE;      /* switch to output pin (output is low) */
 957         }
 958         else if (srst == 0)
 959         {
 960                 if (jtag_reset_config & RESET_SRST_PUSH_PULL)
 961                         low_output |= nSRST;    /* switch output high */
 962                 else
 963                         low_direction &= ~nSRSTnOE;     /* switch to input pin (high-Z) */
 964         }
 965
 966         /* command "set data bits low byte" */
 967         BUFFER_ADD = 0x80;
 968         BUFFER_ADD = low_output;
 969         BUFFER_ADD = low_direction;
 970
 971 }
 972
 973 void jtagkey_reset(int trst, int srst)
 974 {
 975         if (trst == 1)
 976         {
 977                 if (jtag_reset_config & RESET_TRST_OPEN_DRAIN)
 978                         high_output &= ~nTRSTnOE;
 979                 else
 980                         high_output &= ~nTRST;
 981         }
 982         else if (trst == 0)
 983         {
 984                 if (jtag_reset_config & RESET_TRST_OPEN_DRAIN)
 985                         high_output |= nTRSTnOE;
 986                 else
 987                         high_output |= nTRST;
 988         }
 989
 990         if (srst == 1)
 991         {
 992                 if (jtag_reset_config & RESET_SRST_PUSH_PULL)
 993                         high_output &= ~nSRST;
 994                 else
 995                         high_output &= ~nSRSTnOE;
 996         }
 997         else if (srst == 0)
 998         {
 999                 if (jtag_reset_config & RESET_SRST_PUSH_PULL)
1000                         high_output |= nSRST;
1001                 else
1002                         high_output |= nSRSTnOE;
1003         }
1004
1005         /* command "set data bits high byte" */
1006         BUFFER_ADD = 0x82;
1007         BUFFER_ADD = high_output;
1008         BUFFER_ADD = high_direction;
1009         LOG_DEBUG("trst: %i, srst: %i, high_output: 0x%2.2x, high_direction: 0x%2.2x", trst, srst, high_output, high_direction);
1010 }
1011
1012 void olimex_jtag_reset(int trst, int srst)
1013 {
1014         if (trst == 1)
1015         {
1016                 if (jtag_reset_config & RESET_TRST_OPEN_DRAIN)
1017                         high_output &= ~nTRSTnOE;
1018                 else
1019                         high_output &= ~nTRST;
1020         }
1021         else if (trst == 0)
1022         {
1023                 if (jtag_reset_config & RESET_TRST_OPEN_DRAIN)
1024                         high_output |= nTRSTnOE;
1025                 else
1026                         high_output |= nTRST;
1027         }
1028
1029         if (srst == 1)
1030         {
1031                 high_output |= nSRST;
1032         }
1033         else if (srst == 0)
1034         {
1035                 high_output &= ~nSRST;
1036         }
1037
1038         /* command "set data bits high byte" */
1039         BUFFER_ADD = 0x82;
1040         BUFFER_ADD = high_output;
1041         BUFFER_ADD = high_direction;
1042         LOG_DEBUG("trst: %i, srst: %i, high_output: 0x%2.2x, high_direction: 0x%2.2x", trst, srst, high_output, high_direction);
1043 }
1044
1045 void flyswatter_reset(int trst, int srst)
1046 {
1047         if (trst == 1)
1048         {
1049                 low_output &= ~nTRST;
1050         }
1051         else if (trst == 0)
1052         {
1053                 low_output |= nTRST;
1054         }
1055
1056         if (srst == 1)
1057         {
1058                 low_output |= nSRST;
1059         }
1060         else if (srst == 0)
1061         {
1062                 low_output &= ~nSRST;
1063         }
1064
1065         /* command "set data bits low byte" */
1066         BUFFER_ADD = 0x80;
1067         BUFFER_ADD = low_output;
1068         BUFFER_ADD = low_direction;
1069         LOG_DEBUG("trst: %i, srst: %i, low_output: 0x%2.2x, low_direction: 0x%2.2x", trst, srst, low_output, low_direction);
1070 }
1071
1072 void turtle_reset(int trst, int srst)
1073 {
1074         trst = trst;
1075
1076         if (srst == 1)
1077         {
1078                 low_output |= nSRST;
1079         }
1080         else if (srst == 0)
1081         {
1082                 low_output &= ~nSRST;
1083         }
1084
1085         /* command "set data bits low byte" */
1086         BUFFER_ADD = 0x80;
1087         BUFFER_ADD = low_output;
1088         BUFFER_ADD = low_direction;
1089         LOG_DEBUG("srst: %i, low_output: 0x%2.2x, low_direction: 0x%2.2x", srst, low_output, low_direction);
1090 }
1091
1092 void comstick_reset(int trst, int srst)
1093 {
1094         if (trst == 1)
1095         {
1096                 high_output &= ~nTRST;
1097         }
1098         else if (trst == 0)
1099         {
1100                 high_output |= nTRST;
1101         }
1102
1103         if (srst == 1)
1104         {
1105                 high_output &= ~nSRST;
1106         }
1107         else if (srst == 0)
1108         {
1109                 high_output |= nSRST;
1110         }
1111
1112         /* command "set data bits high byte" */
1113         BUFFER_ADD = 0x82;
1114         BUFFER_ADD = high_output;
1115         BUFFER_ADD = high_direction;
1116         LOG_DEBUG("trst: %i, srst: %i, high_output: 0x%2.2x, high_direction: 0x%2.2x", trst, srst, high_output, high_direction);
1117 }
1118
1119 void stm32stick_reset(int trst, int srst)
1120 {
1121         if (trst == 1)
1122         {
1123                 high_output &= ~nTRST;
1124         }
1125         else if (trst == 0)
1126         {
1127                 high_output |= nTRST;
1128         }
1129
1130         if (srst == 1)
1131         {
1132                 low_output &= ~nSRST;
1133         }
1134         else if (srst == 0)
1135         {
1136                 low_output |= nSRST;
1137         }
1138
1139         /* command "set data bits low byte" */
1140         BUFFER_ADD = 0x80;
1141         BUFFER_ADD = low_output;
1142         BUFFER_ADD = low_direction;
1143
1144         /* command "set data bits high byte" */
1145         BUFFER_ADD = 0x82;
1146         BUFFER_ADD = high_output;
1147         BUFFER_ADD = high_direction;
1148         LOG_DEBUG("trst: %i, srst: %i, high_output: 0x%2.2x, high_direction: 0x%2.2x", trst, srst, high_output, high_direction);
1149 }
1150
1151 int ft2232_execute_queue()
1152 {
1153         jtag_command_t *cmd = jtag_command_queue; /* currently processed command */
1154         jtag_command_t *first_unsent = cmd;     /* next command that has to be sent */
1155         u8 *buffer;
1156         int scan_size;  /* size of IR or DR scan */
1157         enum scan_type type;
1158         int i;
1159         int predicted_size = 0;
1160         int require_send = 0;
1161         int retval;
1162
1163         /* return ERROR_OK, unless ft2232_send_and_recv reports a failed check
1164          * that wasn't handled by a caller-provided error handler
1165          */
1166         retval = ERROR_OK;
1167
1168         ft2232_buffer_size = 0;
1169         ft2232_expect_read = 0;
1170
1171         /* blink, if the current layout has that feature */
1172         if (layout->blink)
1173                 layout->blink();
1174
1175         while (cmd)
1176         {
1177                 switch(cmd->type)
1178                 {
1179                         case JTAG_END_STATE:
1180                                 if (cmd->cmd.end_state->end_state != -1)
1181                                         ft2232_end_state(cmd->cmd.end_state->end_state);
1182                                 break;
1183                         case JTAG_RESET:
1184                                 /* only send the maximum buffer size that FT2232C can handle */
1185                                 predicted_size = 3;
1186                                 if (ft2232_buffer_size + predicted_size + 1 > FT2232_BUFFER_SIZE)
1187                                 {
1188                                         if (ft2232_send_and_recv(first_unsent, cmd) != ERROR_OK)
1189                                                 retval = ERROR_JTAG_QUEUE_FAILED;
1190                                         require_send = 0;
1191                                         first_unsent = cmd;
1192                                 }
1193
1194                                 if ((cmd->cmd.reset->trst == 1) || (cmd->cmd.reset->srst && (jtag_reset_config & RESET_SRST_PULLS_TRST)))
1195                                 {
1196                                         cur_state = TAP_TLR;
1197                                 }
1198                                 layout->reset(cmd->cmd.reset->trst, cmd->cmd.reset->srst);
1199                                 require_send = 1;
1200
1201 #ifdef _DEBUG_JTAG_IO_
1202                                 LOG_DEBUG("trst: %i, srst: %i", cmd->cmd.reset->trst, cmd->cmd.reset->srst);
1203 #endif
1204                                 break;
1205                         case JTAG_RUNTEST:
1206                                 /* only send the maximum buffer size that FT2232C can handle */
1207                                 predicted_size = 0;
1208                                 if (cur_state != TAP_RTI)
1209                                         predicted_size += 3;
1210                                 predicted_size += 3 * CEIL(cmd->cmd.runtest->num_cycles, 7);
1211                                 if ((cmd->cmd.runtest->end_state != -1) && (cmd->cmd.runtest->end_state != TAP_RTI))
1212                                         predicted_size += 3;
1213                                 if ((cmd->cmd.runtest->end_state == -1) && (end_state != TAP_RTI))
1214                                         predicted_size += 3;
1215                                 if (ft2232_buffer_size + predicted_size + 1 > FT2232_BUFFER_SIZE)
1216                                 {
1217                                         if (ft2232_send_and_recv(first_unsent, cmd) != ERROR_OK)
1218                                                 retval = ERROR_JTAG_QUEUE_FAILED;
1219                                         require_send = 0;
1220                                         first_unsent = cmd;
1221                                 }
1222                                 if (cur_state != TAP_RTI)
1223                                 {
1224                                         /* command "Clock Data to TMS/CS Pin (no Read)" */
1225                                         BUFFER_ADD = 0x4b;
1226                                         /* scan 7 bit */
1227                                         BUFFER_ADD = 0x6;
1228                                         /* TMS data bits */
1229                                         BUFFER_ADD = TAP_MOVE(cur_state, TAP_RTI);
1230                                         cur_state = TAP_RTI;
1231                                         require_send = 1;
1232                                 }
1233                                 i = cmd->cmd.runtest->num_cycles;
1234                                 while (i > 0)
1235                                 {
1236                                         /* command "Clock Data to TMS/CS Pin (no Read)" */
1237                                         BUFFER_ADD = 0x4b;
1238                                         /* scan 7 bit */
1239                                         BUFFER_ADD = (i > 7) ? 6 : (i - 1);
1240                                         /* TMS data bits */
1241                                         BUFFER_ADD = 0x0;
1242                                         cur_state = TAP_RTI;
1243                                         i -= (i > 7) ? 7 : i;
1244                                         /* LOG_DEBUG("added TMS scan (no read)"); */
1245                                 }
1246                                 if (cmd->cmd.runtest->end_state != -1)
1247                                         ft2232_end_state(cmd->cmd.runtest->end_state);
1248                                 if (cur_state != end_state)
1249                                 {
1250                                         /* command "Clock Data to TMS/CS Pin (no Read)" */
1251                                         BUFFER_ADD = 0x4b;
1252                                         /* scan 7 bit */
1253                                         BUFFER_ADD = 0x6;
1254                                         /* TMS data bits */
1255                                         BUFFER_ADD = TAP_MOVE(cur_state, end_state);
1256                                         cur_state = end_state;
1257                                         /* LOG_DEBUG("added TMS scan (no read)"); */
1258                                 }
1259                                 require_send = 1;
1260 #ifdef _DEBUG_JTAG_IO_
1261                                 LOG_DEBUG("runtest: %i, end in %i", cmd->cmd.runtest->num_cycles, end_state);
1262 #endif
1263                                 break;
1264                         case JTAG_STATEMOVE:
1265                                 /* only send the maximum buffer size that FT2232C can handle */
1266                                 predicted_size = 3;
1267                                 if (ft2232_buffer_size + predicted_size + 1 > FT2232_BUFFER_SIZE)
1268                                 {
1269                                         if (ft2232_send_and_recv(first_unsent, cmd) != ERROR_OK)
1270                                                 retval = ERROR_JTAG_QUEUE_FAILED;
1271                                         require_send = 0;
1272                                         first_unsent = cmd;
1273                                 }
1274                                 if (cmd->cmd.statemove->end_state != -1)
1275                                         ft2232_end_state(cmd->cmd.statemove->end_state);
1276                                 /* command "Clock Data to TMS/CS Pin (no Read)" */
1277                                 BUFFER_ADD = 0x4b;
1278                                 /* scan 7 bit */
1279                                 BUFFER_ADD = 0x6;
1280                                 /* TMS data bits */
1281                                 BUFFER_ADD = TAP_MOVE(cur_state, end_state);
1282                                 /* LOG_DEBUG("added TMS scan (no read)"); */
1283                                 cur_state = end_state;
1284                                 require_send = 1;
1285 #ifdef _DEBUG_JTAG_IO_
1286                                 LOG_DEBUG("statemove: %i", end_state);
1287 #endif
1288                                 break;
1289                         case JTAG_PATHMOVE:
1290                                 /* only send the maximum buffer size that FT2232C can handle */
1291                                 predicted_size = 3 * CEIL(cmd->cmd.pathmove->num_states, 7);
1292                                 if (ft2232_buffer_size + predicted_size + 1 > FT2232_BUFFER_SIZE)
1293                                 {
1294                                         if (ft2232_send_and_recv(first_unsent, cmd) != ERROR_OK)
1295                                                 retval = ERROR_JTAG_QUEUE_FAILED;
1296                                         require_send = 0;
1297                                         first_unsent = cmd;
1298                                 }
1299                                 ft2232_add_pathmove(cmd->cmd.pathmove);
1300                                 require_send = 1;
1301 #ifdef _DEBUG_JTAG_IO_
1302                                 LOG_DEBUG("pathmove: %i states, end in %i", cmd->cmd.pathmove->num_states, cmd->cmd.pathmove->path[cmd->cmd.pathmove->num_states - 1]);
1303 #endif
1304                                 break;
1305                         case JTAG_SCAN:
1306                                 scan_size = jtag_build_buffer(cmd->cmd.scan, &buffer);
1307                                 type = jtag_scan_type(cmd->cmd.scan);
1308                                 predicted_size = ft2232_predict_scan_out(scan_size, type);
1309                                 if ((predicted_size + 1) > FT2232_BUFFER_SIZE)
1310                                 {
1311                                         LOG_DEBUG("oversized ft2232 scan (predicted_size > FT2232_BUFFER_SIZE)");
1312                                         /* unsent commands before this */
1313                                         if (first_unsent != cmd)
1314                                                 if (ft2232_send_and_recv(first_unsent, cmd) != ERROR_OK)
1315                                                         retval = ERROR_JTAG_QUEUE_FAILED;
1316
1317                                         /* current command */
1318                                         if (cmd->cmd.scan->end_state != -1)
1319                                                 ft2232_end_state(cmd->cmd.scan->end_state);
1320                                         ft2232_large_scan(cmd->cmd.scan, type, buffer, scan_size);
1321                                         require_send = 0;
1322                                         first_unsent = cmd->next;
1323                                         if (buffer)
1324                                                 free(buffer);
1325                                         break;
1326                                 }
1327                                 else if (ft2232_buffer_size + predicted_size + 1 > FT2232_BUFFER_SIZE)
1328                                 {
1329                                         LOG_DEBUG("ft2232 buffer size reached, sending queued commands (first_unsent: %p, cmd: %p)", first_unsent, cmd);
1330                                         if (ft2232_send_and_recv(first_unsent, cmd) != ERROR_OK)
1331                                                 retval = ERROR_JTAG_QUEUE_FAILED;
1332                                         require_send = 0;
1333                                         first_unsent = cmd;
1334                                 }
1335                                 ft2232_expect_read += ft2232_predict_scan_in(scan_size, type);
1336                                 /* LOG_DEBUG("new read size: %i", ft2232_expect_read); */
1337                                 if (cmd->cmd.scan->end_state != -1)
1338                                         ft2232_end_state(cmd->cmd.scan->end_state);
1339                                 ft2232_add_scan(cmd->cmd.scan->ir_scan, type, buffer, scan_size);
1340                                 require_send = 1;
1341                                 if (buffer)
1342                                         free(buffer);
1343 #ifdef _DEBUG_JTAG_IO_
1344                                 LOG_DEBUG("%s scan, %i bit, end in %i", (cmd->cmd.scan->ir_scan) ? "IR" : "DR", scan_size, end_state);
1345 #endif
1346                                 break;
1347                         case JTAG_SLEEP:
1348                                 if (ft2232_send_and_recv(first_unsent, cmd) != ERROR_OK)
1349                                         retval = ERROR_JTAG_QUEUE_FAILED;
1350                                 first_unsent = cmd->next;
1351                                 jtag_sleep(cmd->cmd.sleep->us);
1352 #ifdef _DEBUG_JTAG_IO_
1353                                 LOG_DEBUG("sleep %i usec", cmd->cmd.sleep->us);
1354 #endif
1355                                 break;
1356                         default:
1357                                 LOG_ERROR("BUG: unknown JTAG command type encountered");
1358                                 exit(-1);
1359                 }
1360                 cmd = cmd->next;
1361         }
1362
1363         if (require_send > 0)
1364                 if (ft2232_send_and_recv(first_unsent, cmd) != ERROR_OK)
1365                         retval = ERROR_JTAG_QUEUE_FAILED;
1366
1367         return retval;
1368 }
1369
1370 #if BUILD_FT2232_FTD2XX == 1
1371 static int ft2232_init_ftd2xx(u16 vid, u16 pid, int more, int *try_more)
1372 {
1373         FT_STATUS status;
1374         DWORD openex_flags = 0;
1375         char *openex_string = NULL;
1376         u8 latency_timer;
1377
1378         LOG_DEBUG("'ft2232' interface using FTD2XX with '%s' layout (%4.4x:%4.4x)",
1379             ft2232_layout, vid, pid);
1380
1381 #if IS_WIN32 == 0
1382         /* Add non-standard Vid/Pid to the linux driver */
1383         if ((status = FT_SetVIDPID(vid, pid)) != FT_OK)
1384         {
1385                 LOG_WARNING("couldn't add %4.4x:%4.4x",
1386                     vid, pid);
1387         }
1388 #endif
1389
1390         if (ft2232_device_desc && ft2232_serial)
1391         {
1392                 LOG_WARNING("can't open by device description and serial number, giving precedence to serial");
1393                 ft2232_device_desc = NULL;
1394         }
1395
1396         if (ft2232_device_desc)
1397         {
1398                 openex_string = ft2232_device_desc;
1399                 openex_flags = FT_OPEN_BY_DESCRIPTION;
1400         }
1401         else if (ft2232_serial)
1402         {
1403                 openex_string = ft2232_serial;
1404                 openex_flags = FT_OPEN_BY_SERIAL_NUMBER;
1405         }
1406         else
1407         {
1408                 LOG_ERROR("neither device description nor serial number specified");
1409                 LOG_ERROR("please add \"ft2232_device_desc <string>\" or \"ft2232_serial <string>\" to your .cfg file");
1410
1411                 return ERROR_JTAG_INIT_FAILED;
1412         }
1413
1414         if ((status = FT_OpenEx(openex_string, openex_flags, &ftdih)) != FT_OK)
1415         {
1416                 DWORD num_devices;
1417
1418                 if (more) {
1419                         LOG_WARNING("unable to open ftdi device (trying more): %lu",
1420                             status);
1421                         *try_more = 1;
1422                         return ERROR_JTAG_INIT_FAILED;
1423                 }
1424                 LOG_ERROR("unable to open ftdi device: %lu", status);
1425                 status = FT_ListDevices(&num_devices, NULL, FT_LIST_NUMBER_ONLY);
1426                 if (status == FT_OK)
1427                 {
1428                         char **desc_array = malloc(sizeof(char*) * (num_devices + 1));
1429                         int i;
1430
1431                         for (i = 0; i < num_devices; i++)
1432                                 desc_array[i] = malloc(64);
1433                         desc_array[num_devices] = NULL;
1434
1435                         status = FT_ListDevices(desc_array, &num_devices, FT_LIST_ALL | openex_flags);
1436
1437                         if (status == FT_OK)
1438                         {
1439                                 LOG_ERROR("ListDevices: %lu\n", num_devices);
1440                                 for (i = 0; i < num_devices; i++)
1441                                         LOG_ERROR("%i: %s", i, desc_array[i]);
1442                         }
1443
1444                         for (i = 0; i < num_devices; i++)
1445                                 free(desc_array[i]);
1446                         free(desc_array);
1447                 }
1448                 else
1449                 {
1450                         LOG_ERROR("ListDevices: NONE\n");
1451                 }
1452                 return ERROR_JTAG_INIT_FAILED;
1453         }
1454
1455         if ((status = FT_SetLatencyTimer(ftdih, ft2232_latency)) != FT_OK)
1456         {
1457                 LOG_ERROR("unable to set latency timer: %lu", status);
1458                 return ERROR_JTAG_INIT_FAILED;
1459         }
1460
1461         if ((status = FT_GetLatencyTimer(ftdih, &latency_timer)) != FT_OK)
1462         {
1463                 LOG_ERROR("unable to get latency timer: %lu", status);
1464                 return ERROR_JTAG_INIT_FAILED;
1465         }
1466         else
1467         {
1468                 LOG_DEBUG("current latency timer: %i", latency_timer);
1469         }
1470
1471         if ((status = FT_SetTimeouts(ftdih, 5000, 5000)) != FT_OK)
1472         {
1473                 LOG_ERROR("unable to set timeouts: %lu", status);
1474                 return ERROR_JTAG_INIT_FAILED;
1475         }
1476
1477         if ((status = FT_SetBitMode(ftdih, 0x0b, 2)) != FT_OK)
1478         {
1479                 LOG_ERROR("unable to enable bit i/o mode: %lu", status);
1480                 return ERROR_JTAG_INIT_FAILED;
1481         }
1482
1483         return ERROR_OK;
1484 }
1485
1486 static int ft2232_purge_ftd2xx(void)
1487 {
1488         FT_STATUS status;
1489
1490         if ((status = FT_Purge(ftdih, FT_PURGE_RX | FT_PURGE_TX)) != FT_OK)
1491         {
1492                 LOG_ERROR("error purging ftd2xx device: %lu", status);
1493                 return ERROR_JTAG_INIT_FAILED;
1494         }
1495
1496         return ERROR_OK;
1497 }
1498 #endif /* BUILD_FT2232_FTD2XX == 1 */
1499
1500 #if BUILD_FT2232_LIBFTDI == 1
1501 static int ft2232_init_libftdi(u16 vid, u16 pid, int more, int *try_more)
1502 {
1503         u8 latency_timer;
1504
1505         LOG_DEBUG("'ft2232' interface using libftdi with '%s' layout (%4.4x:%4.4x)",
1506                 ft2232_layout, vid, pid);
1507
1508         if (ftdi_init(&ftdic) < 0)
1509                 return ERROR_JTAG_INIT_FAILED;
1510
1511         /* context, vendor id, product id */
1512         if (ftdi_usb_open_desc(&ftdic, vid, pid, ft2232_device_desc,
1513                 ft2232_serial) < 0) {
1514                 if (more)
1515                         LOG_WARNING("unable to open ftdi device (trying more): %s",
1516                                 ftdic.error_str);
1517                 else
1518                         LOG_ERROR("unable to open ftdi device: %s", ftdic.error_str);
1519                 *try_more = 1;
1520                 return ERROR_JTAG_INIT_FAILED;
1521         }
1522
1523         if (ftdi_set_interface(&ftdic, INTERFACE_A) < 0)
1524         {
1525                 LOG_ERROR("unable to select FT2232 channel A: %s", ftdic.error_str);
1526                 return ERROR_JTAG_INIT_FAILED;
1527         }
1528
1529         if (ftdi_usb_reset(&ftdic) < 0)
1530         {
1531                 LOG_ERROR("unable to reset ftdi device");
1532                 return ERROR_JTAG_INIT_FAILED;
1533         }
1534
1535         if (ftdi_set_latency_timer(&ftdic, ft2232_latency) < 0)
1536         {
1537                 LOG_ERROR("unable to set latency timer");
1538                 return ERROR_JTAG_INIT_FAILED;
1539         }
1540
1541         if (ftdi_get_latency_timer(&ftdic, &latency_timer) < 0)
1542         {
1543                 LOG_ERROR("unable to get latency timer");
1544                 return ERROR_JTAG_INIT_FAILED;
1545         }
1546         else
1547         {
1548                 LOG_DEBUG("current latency timer: %i", latency_timer);
1549         }
1550
1551         ftdi_set_bitmode(&ftdic, 0x0b, 2); /* ctx, JTAG I/O mask */
1552
1553         return ERROR_OK;
1554 }
1555
1556 static int ft2232_purge_libftdi(void)
1557 {
1558         if (ftdi_usb_purge_buffers(&ftdic) < 0)
1559         {
1560                 LOG_ERROR("ftdi_purge_buffers: %s", ftdic.error_str);
1561                 return ERROR_JTAG_INIT_FAILED;
1562         }
1563
1564         return ERROR_OK;
1565 }
1566 #endif /* BUILD_FT2232_LIBFTDI == 1 */
1567
1568 int ft2232_init(void)
1569 {
1570         u8 buf[1];
1571         int retval;
1572         u32 bytes_written;
1573         ft2232_layout_t *cur_layout = ft2232_layouts;
1574         int i;
1575
1576         if ((ft2232_layout == NULL) || (ft2232_layout[0] == 0))
1577         {
1578                 ft2232_layout = "usbjtag";
1579                 LOG_WARNING("No ft2232 layout specified, using default 'usbjtag'");
1580         }
1581
1582         while (cur_layout->name)
1583         {
1584                 if (strcmp(cur_layout->name, ft2232_layout) == 0)
1585                 {
1586                         layout = cur_layout;
1587                         break;
1588                 }
1589                 cur_layout++;
1590         }
1591
1592         if (!layout)
1593         {
1594                 LOG_ERROR("No matching layout found for %s", ft2232_layout);
1595                 return ERROR_JTAG_INIT_FAILED;
1596         }
1597
1598         for (i = 0; 1; i++) {
1599                 /*
1600                  * "more indicates that there are more IDs to try, so we should
1601                  * not print an error for an ID mismatch (but for anything
1602                  * else, we should).
1603                  *
1604                  * try_more indicates that the error code returned indicates an
1605                  * ID mismatch (and nothing else) and that we should proceeed
1606                  * with the next ID pair.
1607                  */
1608                 int more = ft2232_vid[i+1] || ft2232_pid[i+1];
1609                 int try_more = 0;
1610
1611 #if BUILD_FT2232_FTD2XX == 1
1612                 retval = ft2232_init_ftd2xx(ft2232_vid[i], ft2232_pid[i],
1613                         more, &try_more);
1614 #elif BUILD_FT2232_LIBFTDI == 1
1615                 retval = ft2232_init_libftdi(ft2232_vid[i], ft2232_pid[i],
1616                         more, &try_more);
1617 #endif
1618                 if (retval >= 0)
1619                         break;
1620                 if (!more || !try_more)
1621                         return retval;
1622         }
1623
1624         ft2232_buffer_size = 0;
1625         ft2232_buffer = malloc(FT2232_BUFFER_SIZE);
1626
1627         if (layout->init() != ERROR_OK)
1628                 return ERROR_JTAG_INIT_FAILED;
1629
1630         ft2232_speed(jtag_speed);
1631
1632         buf[0] = 0x85; /* Disconnect TDI/DO to TDO/DI for Loopback */
1633         if (((retval = ft2232_write(buf, 1, &bytes_written)) != ERROR_OK) || (bytes_written != 1))
1634         {
1635                 LOG_ERROR("couldn't write to FT2232 to disable loopback");
1636                 return ERROR_JTAG_INIT_FAILED;
1637         }
1638
1639 #if BUILD_FT2232_FTD2XX == 1
1640         return ft2232_purge_ftd2xx();
1641 #elif BUILD_FT2232_LIBFTDI == 1
1642         return ft2232_purge_libftdi();
1643 #endif
1644
1645         return ERROR_OK;
1646 }
1647
1648 int usbjtag_init(void)
1649 {
1650         u8 buf[3];
1651         u32 bytes_written;
1652
1653         low_output = 0x08;
1654         low_direction = 0x0b;
1655
1656         if (strcmp(ft2232_layout, "usbjtag") == 0)
1657         {
1658                 nTRST = 0x10;
1659                 nTRSTnOE = 0x10;
1660                 nSRST = 0x40;
1661                 nSRSTnOE = 0x40;
1662         }
1663         else if (strcmp(ft2232_layout, "signalyzer") == 0)
1664         {
1665                 nTRST = 0x10;
1666                 nTRSTnOE = 0x10;
1667                 nSRST = 0x20;
1668                 nSRSTnOE = 0x20;
1669         }
1670         else if (strcmp(ft2232_layout, "evb_lm3s811") == 0)
1671         {
1672                 nTRST = 0x0;
1673                 nTRSTnOE = 0x00;
1674                 nSRST = 0x20;
1675                 nSRSTnOE = 0x20;
1676                 low_output = 0x88;
1677                 low_direction = 0x8b;
1678         }
1679         else
1680         {
1681                 LOG_ERROR("BUG: usbjtag_init called for unknown layout '%s'", ft2232_layout);
1682                 return ERROR_JTAG_INIT_FAILED;
1683         }
1684
1685         if (jtag_reset_config & RESET_TRST_OPEN_DRAIN)
1686         {
1687                 low_direction &= ~nTRSTnOE; /* nTRST input */
1688                 low_output &= ~nTRST; /* nTRST = 0 */
1689         }
1690         else
1691         {
1692                 low_direction |= nTRSTnOE; /* nTRST output */
1693                 low_output |= nTRST; /* nTRST = 1 */
1694         }
1695
1696         if (jtag_reset_config & RESET_SRST_PUSH_PULL)
1697         {
1698                 low_direction |= nSRSTnOE; /* nSRST output */
1699                 low_output |= nSRST; /* nSRST = 1 */
1700         }
1701         else
1702         {
1703                 low_direction &= ~nSRSTnOE; /* nSRST input */
1704                 low_output &= ~nSRST; /* nSRST = 0 */
1705         }
1706
1707         /* initialize low byte for jtag */
1708         buf[0] = 0x80; /* command "set data bits low byte" */
1709         buf[1] = low_output; /* value (TMS=1,TCK=0, TDI=0, xRST high) */
1710         buf[2] = low_direction; /* dir (output=1), TCK/TDI/TMS=out, TDO=in */
1711         LOG_DEBUG("%2.2x %2.2x %2.2x", buf[0], buf[1], buf[2]);
1712
1713         if (((ft2232_write(buf, 3, &bytes_written)) != ERROR_OK) || (bytes_written != 3))
1714         {
1715                 LOG_ERROR("couldn't initialize FT2232 with 'USBJTAG' layout");
1716                 return ERROR_JTAG_INIT_FAILED;
1717         }
1718
1719         return ERROR_OK;
1720 }
1721
1722 int jtagkey_init(void)
1723 {
1724         u8 buf[3];
1725         u32 bytes_written;
1726
1727         low_output = 0x08;
1728         low_direction = 0x1b;
1729
1730         /* initialize low byte for jtag */
1731         buf[0] = 0x80; /* command "set data bits low byte" */
1732         buf[1] = low_output; /* value (TMS=1,TCK=0, TDI=0, nOE=0) */
1733         buf[2] = low_direction; /* dir (output=1), TCK/TDI/TMS=out, TDO=in, nOE=out */
1734         LOG_DEBUG("%2.2x %2.2x %2.2x", buf[0], buf[1], buf[2]);
1735
1736         if (((ft2232_write(buf, 3, &bytes_written)) != ERROR_OK) || (bytes_written != 3))
1737         {
1738                 LOG_ERROR("couldn't initialize FT2232 with 'JTAGkey' layout");
1739                 return ERROR_JTAG_INIT_FAILED;
1740         }
1741
1742         if (strcmp(layout->name, "jtagkey") == 0)
1743         {
1744                 nTRST = 0x01;
1745                 nTRSTnOE = 0x4;
1746                 nSRST = 0x02;
1747                 nSRSTnOE = 0x08;
1748         }
1749         else if ((strcmp(layout->name, "jtagkey_prototype_v1") == 0) ||
1750                 (strcmp(layout->name, "oocdlink") == 0))
1751         {
1752                 nTRST = 0x02;
1753                 nTRSTnOE = 0x1;
1754                 nSRST = 0x08;
1755                 nSRSTnOE = 0x04;
1756         }
1757         else
1758         {
1759                 LOG_ERROR("BUG: jtagkey_init called for non jtagkey layout");
1760                 exit(-1);
1761         }
1762
1763         high_output = 0x0;
1764         high_direction = 0x0f;
1765
1766         if (jtag_reset_config & RESET_TRST_OPEN_DRAIN)
1767         {
1768                 high_output |= nTRSTnOE;
1769                 high_output &= ~nTRST;
1770         }
1771         else
1772         {
1773                 high_output &= ~nTRSTnOE;
1774                 high_output |= nTRST;
1775         }
1776
1777         if (jtag_reset_config & RESET_SRST_PUSH_PULL)
1778         {
1779                 high_output &= ~nSRSTnOE;
1780                 high_output |= nSRST;
1781         }
1782         else
1783         {
1784                 high_output |= nSRSTnOE;
1785                 high_output &= ~nSRST;
1786         }
1787
1788         /* initialize high port */
1789         buf[0] = 0x82; /* command "set data bits high byte" */
1790         buf[1] = high_output; /* value */
1791         buf[2] = high_direction;   /* all outputs (xRST and xRSTnOE) */
1792         LOG_DEBUG("%2.2x %2.2x %2.2x", buf[0], buf[1], buf[2]);
1793
1794         if (((ft2232_write(buf, 3, &bytes_written)) != ERROR_OK) || (bytes_written != 3))
1795         {
1796                 LOG_ERROR("couldn't initialize FT2232 with 'JTAGkey' layout");
1797                 return ERROR_JTAG_INIT_FAILED;
1798         }
1799
1800         return ERROR_OK;
1801 }
1802
1803 int olimex_jtag_init(void)
1804 {
1805         u8 buf[3];
1806         u32 bytes_written;
1807
1808         low_output = 0x08;
1809         low_direction = 0x1b;
1810
1811         /* initialize low byte for jtag */
1812         buf[0] = 0x80; /* command "set data bits low byte" */
1813         buf[1] = low_output; /* value (TMS=1,TCK=0, TDI=0, nOE=0) */
1814         buf[2] = low_direction; /* dir (output=1), TCK/TDI/TMS=out, TDO=in, nOE=out */
1815         LOG_DEBUG("%2.2x %2.2x %2.2x", buf[0], buf[1], buf[2]);
1816
1817         if (((ft2232_write(buf, 3, &bytes_written)) != ERROR_OK) || (bytes_written != 3))
1818         {
1819                 LOG_ERROR("couldn't initialize FT2232 with 'JTAGkey' layout");
1820                 return ERROR_JTAG_INIT_FAILED;
1821         }
1822
1823         nTRST = 0x01;
1824         nTRSTnOE = 0x4;
1825         nSRST = 0x02;
1826         nSRSTnOE = 0x00; /* no output enable for nSRST */
1827
1828         high_output = 0x0;
1829         high_direction = 0x0f;
1830
1831         if (jtag_reset_config & RESET_TRST_OPEN_DRAIN)
1832         {
1833                 high_output |= nTRSTnOE;
1834                 high_output &= ~nTRST;
1835         }
1836         else
1837         {
1838                 high_output &= ~nTRSTnOE;
1839                 high_output |= nTRST;
1840         }
1841
1842         if (jtag_reset_config & RESET_SRST_PUSH_PULL)
1843         {
1844                 LOG_ERROR("can't set nSRST to push-pull on the Olimex ARM-USB-OCD");
1845         }
1846         else
1847         {
1848                 high_output &= ~nSRST;
1849         }
1850
1851         /* turn red LED on */
1852         high_output |= 0x08;
1853
1854         /* initialize high port */
1855         buf[0] = 0x82; /* command "set data bits high byte" */
1856         buf[1] = high_output; /* value */
1857         buf[2] = high_direction;   /* all outputs (xRST and xRSTnOE) */
1858         LOG_DEBUG("%2.2x %2.2x %2.2x", buf[0], buf[1], buf[2]);
1859
1860         if (((ft2232_write(buf, 3, &bytes_written)) != ERROR_OK) || (bytes_written != 3))
1861         {
1862                 LOG_ERROR("couldn't initialize FT2232 with 'JTAGkey' layout");
1863                 return ERROR_JTAG_INIT_FAILED;
1864         }
1865
1866         return ERROR_OK;
1867 }
1868
1869 int flyswatter_init(void)
1870 {
1871         u8 buf[3];
1872         u32 bytes_written;
1873
1874         low_output = 0x18;
1875         low_direction = 0xfb;
1876
1877         /* initialize low byte for jtag */
1878         buf[0] = 0x80; /* command "set data bits low byte" */
1879         buf[1] = low_output; /* value (TMS=1,TCK=0, TDI=0, nOE=0) */
1880         buf[2] = low_direction; /* dir (output=1), TCK/TDI/TMS=out, TDO=in, nOE[12]=out, n[ST]srst=out */
1881         LOG_DEBUG("%2.2x %2.2x %2.2x", buf[0], buf[1], buf[2]);
1882
1883         if (((ft2232_write(buf, 3, &bytes_written)) != ERROR_OK) || (bytes_written != 3))
1884         {
1885                 LOG_ERROR("couldn't initialize FT2232 with 'flyswatter' layout");
1886                 return ERROR_JTAG_INIT_FAILED;
1887         }
1888
1889         nTRST = 0x10;
1890         nTRSTnOE = 0x0; /* not output enable for nTRST */
1891         nSRST = 0x20;
1892         nSRSTnOE = 0x00; /* no output enable for nSRST */
1893
1894         high_output = 0x00;
1895         high_direction = 0x0c;
1896
1897         /* turn red LED1 on, LED2 off */
1898         high_output |= 0x08;
1899
1900         /* initialize high port */
1901         buf[0] = 0x82; /* command "set data bits high byte" */
1902         buf[1] = high_output; /* value */
1903         buf[2] = high_direction;   /* all outputs (xRST and xRSTnOE) */
1904         LOG_DEBUG("%2.2x %2.2x %2.2x", buf[0], buf[1], buf[2]);
1905
1906         if (((ft2232_write(buf, 3, &bytes_written)) != ERROR_OK) || (bytes_written != 3))
1907         {
1908                 LOG_ERROR("couldn't initialize FT2232 with 'flyswatter' layout");
1909                 return ERROR_JTAG_INIT_FAILED;
1910         }
1911
1912         return ERROR_OK;
1913 }
1914
1915 int turtle_init(void)
1916 {
1917         u8 buf[3];
1918         u32 bytes_written;
1919
1920         low_output = 0x08;
1921         low_direction = 0x5b;
1922
1923         /* initialize low byte for jtag */
1924         buf[0] = 0x80; /* command "set data bits low byte" */
1925         buf[1] = low_output; /* value (TMS=1,TCK=0, TDI=0, nOE=0) */
1926         buf[2] = low_direction; /* dir (output=1), TCK/TDI/TMS=out, TDO=in, nOE=out */
1927         LOG_DEBUG("%2.2x %2.2x %2.2x", buf[0], buf[1], buf[2]);
1928
1929         if (((ft2232_write(buf, 3, &bytes_written)) != ERROR_OK) || (bytes_written != 3))
1930         {
1931                 LOG_ERROR("couldn't initialize FT2232 with 'turtelizer2' layout");
1932                 return ERROR_JTAG_INIT_FAILED;
1933         }
1934
1935         nSRST = 0x40;
1936
1937         high_output = 0x00;
1938         high_direction = 0x0C;
1939
1940         /* initialize high port */
1941         buf[0] = 0x82; /* command "set data bits high byte" */
1942         buf[1] = high_output;
1943         buf[2] = high_direction;
1944         LOG_DEBUG("%2.2x %2.2x %2.2x", buf[0], buf[1], buf[2]);
1945
1946         if (((ft2232_write(buf, 3, &bytes_written)) != ERROR_OK) || (bytes_written != 3))
1947         {
1948                 LOG_ERROR("couldn't initialize FT2232 with 'turtelizer2' layout");
1949                 return ERROR_JTAG_INIT_FAILED;
1950         }
1951
1952         return ERROR_OK;
1953 }
1954
1955 int comstick_init(void)
1956 {
1957         u8 buf[3];
1958         u32 bytes_written;
1959
1960         low_output = 0x08;
1961         low_direction = 0x0b;
1962
1963         /* initialize low byte for jtag */
1964         buf[0] = 0x80; /* command "set data bits low byte" */
1965         buf[1] = low_output; /* value (TMS=1,TCK=0, TDI=0, nOE=0) */
1966         buf[2] = low_direction; /* dir (output=1), TCK/TDI/TMS=out, TDO=in, nOE=out */
1967         LOG_DEBUG("%2.2x %2.2x %2.2x", buf[0], buf[1], buf[2]);
1968
1969         if (((ft2232_write(buf, 3, &bytes_written)) != ERROR_OK) || (bytes_written != 3))
1970         {
1971                 LOG_ERROR("couldn't initialize FT2232 with 'comstick' layout");
1972                 return ERROR_JTAG_INIT_FAILED;
1973         }
1974
1975         nTRST = 0x01;
1976         nTRSTnOE = 0x00; /* no output enable for nTRST */
1977         nSRST = 0x02;
1978         nSRSTnOE = 0x00; /* no output enable for nSRST */
1979
1980         high_output = 0x03;
1981         high_direction = 0x03;
1982
1983         /* initialize high port */
1984         buf[0] = 0x82; /* command "set data bits high byte" */
1985         buf[1] = high_output;
1986         buf[2] = high_direction;
1987         LOG_DEBUG("%2.2x %2.2x %2.2x", buf[0], buf[1], buf[2]);
1988
1989         if (((ft2232_write(buf, 3, &bytes_written)) != ERROR_OK) || (bytes_written != 3))
1990         {
1991                 LOG_ERROR("couldn't initialize FT2232 with 'comstick' layout");
1992                 return ERROR_JTAG_INIT_FAILED;
1993         }
1994
1995         return ERROR_OK;
1996 }
1997
1998 int stm32stick_init(void)
1999 {
2000         u8 buf[3];
2001         u32 bytes_written;
2002
2003         low_output = 0x88;
2004         low_direction = 0x8b;
2005
2006         /* initialize low byte for jtag */
2007         buf[0] = 0x80; /* command "set data bits low byte" */
2008         buf[1] = low_output; /* value (TMS=1,TCK=0, TDI=0, nOE=0) */
2009         buf[2] = low_direction; /* dir (output=1), TCK/TDI/TMS=out, TDO=in, nOE=out */
2010         LOG_DEBUG("%2.2x %2.2x %2.2x", buf[0], buf[1], buf[2]);
2011
2012         if (((ft2232_write(buf, 3, &bytes_written)) != ERROR_OK) || (bytes_written != 3))
2013         {
2014                 LOG_ERROR("couldn't initialize FT2232 with 'stm32stick' layout");
2015                 return ERROR_JTAG_INIT_FAILED;
2016         }
2017
2018         nTRST = 0x01;
2019         nTRSTnOE = 0x00; /* no output enable for nTRST */
2020         nSRST = 0x80;
2021         nSRSTnOE = 0x00; /* no output enable for nSRST */
2022
2023         high_output = 0x01;
2024         high_direction = 0x03;
2025
2026         /* initialize high port */
2027         buf[0] = 0x82; /* command "set data bits high byte" */
2028         buf[1] = high_output;
2029         buf[2] = high_direction;
2030         LOG_DEBUG("%2.2x %2.2x %2.2x", buf[0], buf[1], buf[2]);
2031
2032         if (((ft2232_write(buf, 3, &bytes_written)) != ERROR_OK) || (bytes_written != 3))
2033         {
2034                 LOG_ERROR("couldn't initialize FT2232 with 'stm32stick' layout");
2035                 return ERROR_JTAG_INIT_FAILED;
2036         }
2037
2038         return ERROR_OK;
2039 }
2040
2041 void olimex_jtag_blink(void)
2042 {
2043         /* Olimex ARM-USB-OCD has a LED connected to ACBUS3
2044          * ACBUS3 is bit 3 of the GPIOH port
2045          */
2046         if (high_output & 0x08)
2047         {
2048                 /* set port pin high */
2049                 high_output &= 0x07;
2050         }
2051         else
2052         {
2053                 /* set port pin low */
2054                 high_output |= 0x08;
2055         }
2056
2057         BUFFER_ADD = 0x82;
2058         BUFFER_ADD = high_output;
2059         BUFFER_ADD = high_direction;
2060 }
2061
2062 void turtle_jtag_blink(void)
2063 {
2064         /*
2065    * Turtelizer2 has two LEDs connected to ACBUS2 and ACBUS3
2066          */
2067         if (high_output & 0x08)
2068         {
2069                 high_output = 0x04;
2070         }
2071         else
2072         {
2073                 high_output = 0x08;
2074         }
2075
2076         BUFFER_ADD = 0x82;
2077         BUFFER_ADD = high_output;
2078         BUFFER_ADD = high_direction;
2079 }
2080
2081 int ft2232_quit(void)
2082 {
2083 #if BUILD_FT2232_FTD2XX == 1
2084         FT_STATUS status;
2085
2086         status = FT_Close(ftdih);
2087 #elif BUILD_FT2232_LIBFTDI == 1
2088         ftdi_disable_bitbang(&ftdic);
2089
2090         ftdi_usb_close(&ftdic);
2091
2092         ftdi_deinit(&ftdic);
2093 #endif
2094
2095         free(ft2232_buffer);
2096         ft2232_buffer = NULL;
2097
2098         return ERROR_OK;
2099 }
2100
2101 int ft2232_handle_device_desc_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2102 {
2103         if (argc == 1)
2104         {
2105                 ft2232_device_desc = strdup(args[0]);
2106         }
2107         else
2108         {
2109                 LOG_ERROR("expected exactly one argument to ft2232_device_desc <description>");
2110         }
2111
2112         return ERROR_OK;
2113 }
2114
2115 int ft2232_handle_serial_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2116 {
2117         if (argc == 1)
2118         {
2119                 ft2232_serial = strdup(args[0]);
2120         }
2121         else
2122         {
2123                 LOG_ERROR("expected exactly one argument to ft2232_serial <serial-number>");
2124         }
2125
2126         return ERROR_OK;
2127 }
2128
2129 int ft2232_handle_layout_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2130 {
2131         if (argc == 0)
2132                 return ERROR_OK;
2133
2134         ft2232_layout = malloc(strlen(args[0]) + 1);
2135         strcpy(ft2232_layout, args[0]);
2136
2137         return ERROR_OK;
2138 }
2139
2140 int ft2232_handle_vid_pid_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2141 {
2142         int i;
2143
2144         if (argc > MAX_USB_IDS*2) {
2145                 LOG_WARNING("ignoring extra IDs in ft2232_vid_pid "
2146                         "(maximum is %d pairs)", MAX_USB_IDS);
2147                 argc = MAX_USB_IDS*2;
2148         }
2149         if (argc < 2 || (argc & 1))
2150         {
2151                 LOG_WARNING("incomplete ft2232_vid_pid configuration directive");
2152                 if (argc < 2)
2153                         return ERROR_OK;
2154         }
2155
2156         for (i = 0; i+1 < argc; i += 2) {
2157                 ft2232_vid[i >> 1] = strtol(args[i], NULL, 0);
2158                 ft2232_pid[i >> 1] = strtol(args[i+1], NULL, 0);
2159         }
2160         /*
2161          * Explicitly terminate, in case there are multiples instances of
2162          * ft2232_vid_pid.
2163          */
2164         ft2232_vid[i >> 1] = ft2232_pid[i >> 1] = 0;
2165
2166         return ERROR_OK;
2167 }
2168
2169 int ft2232_handle_latency_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2170 {
2171         if (argc == 1)
2172         {
2173                 ft2232_latency = atoi(args[0]);
2174         }
2175         else
2176         {
2177                 LOG_ERROR("expected exactly one argument to ft2232_latency <ms>");
2178         }
2179
2180         return ERROR_OK;
2181 }