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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
 157         .name = "ft2232",
 158
 159         .execute_queue = ft2232_execute_queue,
 160
 161         .speed = ft2232_speed,
 162   .speed_div = ft2232_speed_div,
 163   .khz = ft2232_khz,
 164
 165         .register_commands = ft2232_register_commands,
 166         .init = ft2232_init,
 167         .quit = ft2232_quit,
 168 };
 169
 170 int ft2232_write(u8 *buf, int size, u32* bytes_written)
 171 {
 172 #if BUILD_FT2232_FTD2XX == 1
 173         FT_STATUS status;
 174         DWORD dw_bytes_written;
 175         if ((status = FT_Write(ftdih, buf, size, &dw_bytes_written)) != FT_OK)
 176         {
 177                 *bytes_written = dw_bytes_written;
 178                 LOG_ERROR("FT_Write returned: %lu", status);
 179                 return ERROR_JTAG_DEVICE_ERROR;
 180         }
 181         else
 182         {
 183                 *bytes_written = dw_bytes_written;
 184                 return ERROR_OK;
 185         }
 186 #elif BUILD_FT2232_LIBFTDI == 1
 187         int retval;
 188         if ((retval = ftdi_write_data(&ftdic, buf, size)) < 0)
 189         {
 190                 *bytes_written = 0;
 191                 LOG_ERROR("ftdi_write_data: %s", ftdi_get_error_string(&ftdic));
 192                 return ERROR_JTAG_DEVICE_ERROR;
 193         }
 194         else
 195         {
 196                 *bytes_written = retval;
 197                 return ERROR_OK;
 198         }
 199 #endif
 200 }
 201
 202 int ft2232_read(u8* buf, int size, u32* bytes_read)
 203 {
 204 #if BUILD_FT2232_FTD2XX == 1
 205         DWORD dw_bytes_read;
 206         FT_STATUS status;
 207         int timeout = 5;
 208         *bytes_read = 0;
 209
 210         while ((*bytes_read < size) && timeout--)
 211         {
 212                 if ((status = FT_Read(ftdih, buf + *bytes_read, size -
 213                         *bytes_read, &dw_bytes_read)) != FT_OK)
 214                 {
 215                         *bytes_read = 0;
 216                         LOG_ERROR("FT_Read returned: %lu", status);
 217                         return ERROR_JTAG_DEVICE_ERROR;
 218                 }
 219                 *bytes_read += dw_bytes_read;
 220         }
 221 #elif BUILD_FT2232_LIBFTDI == 1
 222         int retval;
 223         int timeout = 100;
 224         *bytes_read = 0;
 225
 226         while ((*bytes_read < size) && timeout--)
 227         {
 228                 if ((retval = ftdi_read_data(&ftdic, buf + *bytes_read, size - *bytes_read)) < 0)
 229                 {
 230                         *bytes_read = 0;
 231                         LOG_ERROR("ftdi_read_data: %s", ftdi_get_error_string(&ftdic));
 232                         return ERROR_JTAG_DEVICE_ERROR;
 233                 }
 234                 *bytes_read += retval;
 235         }
 236 #endif
 237
 238         if (*bytes_read < size)
 239         {
 240                 LOG_ERROR("couldn't read the requested number of bytes from FT2232 device (%i < %i)", *bytes_read, size);
 241                 return ERROR_JTAG_DEVICE_ERROR;
 242         }
 243
 244         return ERROR_OK;
 245 }
 246
 247 int ft2232_speed(int speed)
 248 {
 249         u8 buf[3];
 250         int retval;
 251         u32 bytes_written;
 252
 253         buf[0] = 0x86; /* command "set divisor" */
 254         buf[1] = speed & 0xff; /* valueL (0=6MHz, 1=3MHz, 2=2.0MHz, ...*/
 255         buf[2] = (speed >> 8) & 0xff; /* valueH */
 256
 257         LOG_DEBUG("%2.2x %2.2x %2.2x", buf[0], buf[1], buf[2]);
 258         if (((retval = ft2232_write(buf, 3, &bytes_written)) != ERROR_OK) || (bytes_written != 3))
 259         {
 260                 LOG_ERROR("couldn't set FT2232 TCK speed");
 261                 return retval;
 262         }
 263
 264         return ERROR_OK;
 265 }
 266
 267 int ft2232_speed_div(int speed, int *khz)
 268 {
 269   /*
 270    * Take a look in the FT2232 manual,
 271    * AN2232C-01 Command Processor for
 272    * MPSSE and MCU Host Bus. Chapter 3.8
 273    */
 274   *khz = 6000 / (1+speed);
 275
 276         return ERROR_OK;
 277 }
 278
 279 int ft2232_khz(int khz, int *jtag_speed)
 280 {
 281   /*
 282    * Take a look in the FT2232 manual,
 283    * AN2232C-01 Command Processor for
 284    * MPSSE and MCU Host Bus. Chapter 3.8
 285    *
 286    * We will calc here with a multiplier
 287    * of 10 for better rounding later.
 288    */
 289
 290   /* Calc speed, (6000 / khz) - 1 */
 291   *jtag_speed = (60000 / khz) - 10;
 292
 293   /* Add 0.5 for rounding */
 294   *jtag_speed += 5;
 295
 296   /* Calc real speed */
 297   *jtag_speed = *jtag_speed / 10;
 298
 299   /* Check if speed is greater than 0 */
 300   if (*jtag_speed < 0)
 301   {
 302     *jtag_speed = 0;
 303   }
 304
 305         return ERROR_OK;
 306 }
 307
 308
 309
 310 int ft2232_register_commands(struct command_context_s *cmd_ctx)
 311 {
 312         register_command(cmd_ctx, NULL, "ft2232_device_desc", ft2232_handle_device_desc_command,
 313                 COMMAND_CONFIG, NULL);
 314         register_command(cmd_ctx, NULL, "ft2232_serial", ft2232_handle_serial_command,
 315                 COMMAND_CONFIG, NULL);
 316         register_command(cmd_ctx, NULL, "ft2232_layout", ft2232_handle_layout_command,
 317                 COMMAND_CONFIG, NULL);
 318         register_command(cmd_ctx, NULL, "ft2232_vid_pid", ft2232_handle_vid_pid_command,
 319                                          COMMAND_CONFIG, NULL);
 320         register_command(cmd_ctx, NULL, "ft2232_latency", ft2232_handle_latency_command,
 321                                          COMMAND_CONFIG, NULL);
 322         return ERROR_OK;
 323 }
 324
 325 void ft2232_end_state(enum tap_state state)
 326 {
 327         if (tap_move_map[state] != -1)
 328                 end_state = state;
 329         else
 330         {
 331                 LOG_ERROR("BUG: %i is not a valid end state", state);
 332                 exit(-1);
 333         }
 334 }
 335
 336 void ft2232_read_scan(enum scan_type type, u8* buffer, int scan_size)
 337 {
 338         int num_bytes = ((scan_size + 7) / 8);
 339         int bits_left = scan_size;
 340         int cur_byte = 0;
 341
 342         while(num_bytes-- > 1)
 343         {
 344                 buffer[cur_byte] = BUFFER_READ;
 345                 cur_byte++;
 346                 bits_left -= 8;
 347         }
 348
 349         buffer[cur_byte] = 0x0;
 350
 351         if (bits_left > 1)
 352         {
 353                 buffer[cur_byte] = BUFFER_READ >> 1;
 354         }
 355
 356         buffer[cur_byte] = (buffer[cur_byte] | ((BUFFER_READ & 0x02) << 6)) >> (8 - bits_left);
 357
 358 }
 359
 360 void ft2232_debug_dump_buffer(void)
 361 {
 362         int i;
 363         char line[256];
 364         char *line_p = line;
 365
 366         for (i = 0; i < ft2232_buffer_size; i++)
 367         {
 368                 line_p += snprintf(line_p, 256 - (line_p - line), "%2.2x ", ft2232_buffer[i]);
 369                 if (i % 16 == 15)
 370                 {
 371                         LOG_DEBUG("%s", line);
 372                         line_p = line;
 373                 }
 374         }
 375
 376         if (line_p != line)
 377                 LOG_DEBUG("%s", line);
 378 }
 379
 380 int ft2232_send_and_recv(jtag_command_t *first, jtag_command_t *last)
 381 {
 382         jtag_command_t *cmd;
 383         u8 *buffer;
 384         int scan_size;
 385         enum scan_type type;
 386         int retval;
 387         u32 bytes_written;
 388         u32 bytes_read;
 389
 390 #ifdef _DEBUG_USB_IO_
 391         struct timeval start, inter, inter2, end;
 392         struct timeval d_inter, d_inter2, d_end;
 393 #endif
 394
 395 #ifdef _DEBUG_USB_COMMS_
 396         LOG_DEBUG("write buffer (size %i):", ft2232_buffer_size);
 397         ft2232_debug_dump_buffer();
 398 #endif
 399
 400 #ifdef _DEBUG_USB_IO_
 401         gettimeofday(&start, NULL);
 402 #endif
 403
 404         if ((retval = ft2232_write(ft2232_buffer, ft2232_buffer_size, &bytes_written)) != ERROR_OK)
 405         {
 406                 LOG_ERROR("couldn't write MPSSE commands to FT2232");
 407                 exit(-1);
 408         }
 409
 410 #ifdef _DEBUG_USB_IO_
 411         gettimeofday(&inter, NULL);
 412 #endif
 413
 414         if (ft2232_expect_read)
 415         {
 416                 int timeout = 100;
 417                 ft2232_buffer_size = 0;
 418
 419 #ifdef _DEBUG_USB_IO_
 420                 gettimeofday(&inter2, NULL);
 421 #endif
 422
 423                 if ((retval = ft2232_read(ft2232_buffer, ft2232_expect_read, &bytes_read)) != ERROR_OK)
 424                 {
 425                         LOG_ERROR("couldn't read from FT2232");
 426                         exit(-1);
 427                 }
 428
 429 #ifdef _DEBUG_USB_IO_
 430                 gettimeofday(&end, NULL);
 431
 432                 timeval_subtract(&d_inter, &inter, &start);
 433                 timeval_subtract(&d_inter2, &inter2, &start);
 434                 timeval_subtract(&d_end, &end, &start);
 435
 436                 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);
 437 #endif
 438
 439
 440                 ft2232_buffer_size = bytes_read;
 441
 442                 if (ft2232_expect_read != ft2232_buffer_size)
 443                 {
 444                         LOG_ERROR("ft2232_expect_read (%i) != ft2232_buffer_size (%i) (%i retries)", ft2232_expect_read, ft2232_buffer_size, 100 - timeout);
 445                         ft2232_debug_dump_buffer();
 446
 447                         exit(-1);
 448                 }
 449
 450 #ifdef _DEBUG_USB_COMMS_
 451                 LOG_DEBUG("read buffer (%i retries): %i bytes", 100 - timeout, ft2232_buffer_size);
 452                 ft2232_debug_dump_buffer();
 453 #endif
 454         }
 455
 456         ft2232_expect_read = 0;
 457         ft2232_read_pointer = 0;
 458
 459         /* return ERROR_OK, unless a jtag_read_buffer returns a failed check
 460          * that wasn't handled by a caller-provided error handler
 461          */
 462         retval = ERROR_OK;
 463
 464         cmd = first;
 465         while (cmd != last)
 466         {
 467                 switch (cmd->type)
 468                 {
 469                         case JTAG_SCAN:
 470                                 type = jtag_scan_type(cmd->cmd.scan);
 471                                 if (type != SCAN_OUT)
 472                                 {
 473                                         scan_size = jtag_scan_size(cmd->cmd.scan);
 474                                         buffer = calloc(CEIL(scan_size, 8), 1);
 475                                         ft2232_read_scan(type, buffer, scan_size);
 476                                         if (jtag_read_buffer(buffer, cmd->cmd.scan) != ERROR_OK)
 477                                                 retval = ERROR_JTAG_QUEUE_FAILED;
 478                                         free(buffer);
 479                                 }
 480                                 break;
 481                         default:
 482                                 break;
 483                 }
 484                 cmd = cmd->next;
 485         }
 486
 487         ft2232_buffer_size = 0;
 488
 489         return retval;
 490 }
 491
 492 void ft2232_add_pathmove(pathmove_command_t *cmd)
 493 {
 494         int num_states = cmd->num_states;
 495         u8 tms_byte;
 496         int state_count;
 497
 498         state_count = 0;
 499         while (num_states)
 500         {
 501                 int bit_count = 0;
 502
 503                 int num_states_batch = num_states > 7 ? 7 : num_states;
 504
 505                 tms_byte = 0x0;
 506                 /* command "Clock Data to TMS/CS Pin (no Read)" */
 507                 BUFFER_ADD = 0x4b;
 508                 /* number of states remaining */
 509                 BUFFER_ADD = num_states_batch - 1;
 510
 511                 while (num_states_batch--)
 512                 {
 513                         if (tap_transitions[cur_state].low == cmd->path[state_count])
 514                                 buf_set_u32(&tms_byte, bit_count++, 1, 0x0);
 515                         else if (tap_transitions[cur_state].high == cmd->path[state_count])
 516                                 buf_set_u32(&tms_byte, bit_count++, 1, 0x1);
 517                         else
 518                         {
 519                                 LOG_ERROR("BUG: %s -> %s isn't a valid TAP transition", tap_state_strings[cur_state], tap_state_strings[cmd->path[state_count]]);
 520                                 exit(-1);
 521                         }
 522
 523                         cur_state = cmd->path[state_count];
 524                         state_count++;
 525                         num_states--;
 526                 }
 527
 528                 BUFFER_ADD = tms_byte;
 529         }
 530
 531         end_state = cur_state;
 532 }
 533
 534 void ft2232_add_scan(int ir_scan, enum scan_type type, u8 *buffer, int scan_size)
 535 {
 536         int num_bytes = (scan_size + 7) / 8;
 537         int bits_left = scan_size;
 538         int cur_byte = 0;
 539         int last_bit;
 540
 541         if (!((!ir_scan && (cur_state == TAP_SD)) || (ir_scan && (cur_state == TAP_SI))))
 542         {
 543                 /* command "Clock Data to TMS/CS Pin (no Read)" */
 544                 BUFFER_ADD = 0x4b;
 545                 /* scan 7 bit */
 546                 BUFFER_ADD = 0x6;
 547                 /* TMS data bits */
 548                 if (ir_scan)
 549                 {
 550                         BUFFER_ADD = TAP_MOVE(cur_state, TAP_SI);
 551                         cur_state = TAP_SI;
 552                 }
 553                 else
 554                 {
 555                         BUFFER_ADD = TAP_MOVE(cur_state, TAP_SD);
 556                         cur_state = TAP_SD;
 557                 }
 558                 /* LOG_DEBUG("added TMS scan (no read)"); */
 559         }
 560
 561         /* add command for complete bytes */
 562         while (num_bytes > 1)
 563         {
 564                 int thisrun_bytes;
 565                 if (type == SCAN_IO)
 566                 {
 567                         /* Clock Data Bytes In and Out LSB First */
 568                         BUFFER_ADD = 0x39;
 569                         /* LOG_DEBUG("added TDI bytes (io %i)", num_bytes); */
 570                 }
 571                 else if (type == SCAN_OUT)
 572                 {
 573                         /* Clock Data Bytes Out on -ve Clock Edge LSB First (no Read) */
 574                         BUFFER_ADD = 0x19;
 575                         /* LOG_DEBUG("added TDI bytes (o)"); */
 576                 }
 577                 else if (type == SCAN_IN)
 578                 {
 579                         /* Clock Data Bytes In on +ve Clock Edge LSB First (no Write) */
 580                         BUFFER_ADD = 0x28;
 581                         /* LOG_DEBUG("added TDI bytes (i %i)", num_bytes); */
 582                 }
 583                 thisrun_bytes = (num_bytes > 65537) ? 65536 : (num_bytes - 1);
 584                 num_bytes -= thisrun_bytes;
 585                 BUFFER_ADD = (thisrun_bytes - 1) & 0xff;
 586                 BUFFER_ADD = ((thisrun_bytes - 1) >> 8) & 0xff;
 587                 if (type != SCAN_IN)
 588                 {
 589                         /* add complete bytes */
 590                         while(thisrun_bytes-- > 0)
 591                         {
 592                                 BUFFER_ADD = buffer[cur_byte];
 593                                 cur_byte++;
 594                                 bits_left -= 8;
 595                         }
 596                 }
 597                 else /* (type == SCAN_IN) */
 598                 {
 599                         bits_left -= 8 * (thisrun_bytes);
 600                 }
 601         }
 602
 603         /* the most signifcant bit is scanned during TAP movement */
 604         if (type != SCAN_IN)
 605                 last_bit = (buffer[cur_byte] >> (bits_left - 1)) & 0x1;
 606         else
 607                 last_bit = 0;
 608
 609         /* process remaining bits but the last one */
 610         if (bits_left > 1)
 611         {
 612                 if (type == SCAN_IO)
 613                 {
 614                         /* Clock Data Bits In and Out LSB First */
 615                         BUFFER_ADD = 0x3b;
 616                         /* LOG_DEBUG("added TDI bits (io) %i", bits_left - 1); */
 617                 }
 618                 else if (type == SCAN_OUT)
 619                 {
 620                         /* Clock Data Bits Out on -ve Clock Edge LSB First (no Read) */
 621                         BUFFER_ADD = 0x1b;
 622                         /* LOG_DEBUG("added TDI bits (o)"); */
 623                 }
 624                 else if (type == SCAN_IN)
 625                 {
 626                         /* Clock Data Bits In on +ve Clock Edge LSB First (no Write) */
 627                         BUFFER_ADD = 0x2a;
 628                         /* LOG_DEBUG("added TDI bits (i %i)", bits_left - 1); */
 629                 }
 630                 BUFFER_ADD = bits_left - 2;
 631                 if (type != SCAN_IN)
 632                         BUFFER_ADD = buffer[cur_byte];
 633         }
 634
 635         if ((ir_scan && (end_state == TAP_SI)) ||
 636                 (!ir_scan && (end_state == TAP_SD)))
 637         {
 638                 if (type == SCAN_IO)
 639                 {
 640                         /* Clock Data Bits In and Out LSB First */
 641                         BUFFER_ADD = 0x3b;
 642                         /* LOG_DEBUG("added TDI bits (io) %i", bits_left - 1); */
 643                 }
 644                 else if (type == SCAN_OUT)
 645                 {
 646                         /* Clock Data Bits Out on -ve Clock Edge LSB First (no Read) */
 647                         BUFFER_ADD = 0x1b;
 648                         /* LOG_DEBUG("added TDI bits (o)"); */
 649                 }
 650                 else if (type == SCAN_IN)
 651                 {
 652                         /* Clock Data Bits In on +ve Clock Edge LSB First (no Write) */
 653                         BUFFER_ADD = 0x2a;
 654                         /* LOG_DEBUG("added TDI bits (i %i)", bits_left - 1); */
 655                 }
 656                 BUFFER_ADD = 0x0;
 657                 BUFFER_ADD = last_bit;
 658         }
 659         else
 660         {
 661                 /* move from Shift-IR/DR to end state */
 662                 if (type != SCAN_OUT)
 663                 {
 664                         /* Clock Data to TMS/CS Pin with Read */
 665                         BUFFER_ADD = 0x6b;
 666                         /* LOG_DEBUG("added TMS scan (read)"); */
 667                 }
 668                 else
 669                 {
 670                         /* Clock Data to TMS/CS Pin (no Read) */
 671                         BUFFER_ADD = 0x4b;
 672                         /* LOG_DEBUG("added TMS scan (no read)"); */
 673                 }
 674                 BUFFER_ADD = 0x6;
 675                 BUFFER_ADD = TAP_MOVE(cur_state, end_state) | (last_bit << 7);
 676                 cur_state = end_state;
 677         }
 678 }
 679
 680 int ft2232_large_scan(scan_command_t *cmd, enum scan_type type, u8 *buffer, int scan_size)
 681 {
 682         int num_bytes = (scan_size + 7) / 8;
 683         int bits_left = scan_size;
 684         int cur_byte = 0;
 685         int last_bit;
 686         u8 *receive_buffer = malloc(CEIL(scan_size, 8));
 687         u8 *receive_pointer = receive_buffer;
 688         u32 bytes_written;
 689         u32 bytes_read;
 690         int retval;
 691         int thisrun_read = 0;
 692
 693         if (cmd->ir_scan)
 694         {
 695                 LOG_ERROR("BUG: large IR scans are not supported");
 696                 exit(-1);
 697         }
 698
 699         if (cur_state != TAP_SD)
 700         {
 701                 /* command "Clock Data to TMS/CS Pin (no Read)" */
 702                 BUFFER_ADD = 0x4b;
 703                 /* scan 7 bit */
 704                 BUFFER_ADD = 0x6;
 705                 /* TMS data bits */
 706                 BUFFER_ADD = TAP_MOVE(cur_state, TAP_SD);
 707                 cur_state = TAP_SD;
 708         }
 709
 710         if ((retval = ft2232_write(ft2232_buffer, ft2232_buffer_size, &bytes_written)) != ERROR_OK)
 711         {
 712                 LOG_ERROR("couldn't write MPSSE commands to FT2232");
 713                 exit(-1);
 714         }
 715         LOG_DEBUG("ft2232_buffer_size: %i, bytes_written: %i", ft2232_buffer_size, bytes_written);
 716         ft2232_buffer_size = 0;
 717
 718         /* add command for complete bytes */
 719         while (num_bytes > 1)
 720         {
 721                 int thisrun_bytes;
 722
 723                 if (type == SCAN_IO)
 724                 {
 725                         /* Clock Data Bytes In and Out LSB First */
 726                         BUFFER_ADD = 0x39;
 727                         /* LOG_DEBUG("added TDI bytes (io %i)", num_bytes); */
 728                 }
 729                 else if (type == SCAN_OUT)
 730                 {
 731                         /* Clock Data Bytes Out on -ve Clock Edge LSB First (no Read) */
 732                         BUFFER_ADD = 0x19;
 733                         /* LOG_DEBUG("added TDI bytes (o)"); */
 734                 }
 735                 else if (type == SCAN_IN)
 736                 {
 737                         /* Clock Data Bytes In on +ve Clock Edge LSB First (no Write) */
 738                         BUFFER_ADD = 0x28;
 739                         /* LOG_DEBUG("added TDI bytes (i %i)", num_bytes); */
 740                 }
 741                 thisrun_bytes = (num_bytes > 65537) ? 65536 : (num_bytes - 1);
 742                 thisrun_read = thisrun_bytes;
 743                 num_bytes -= thisrun_bytes;
 744                 BUFFER_ADD = (thisrun_bytes - 1) & 0xff;
 745                 BUFFER_ADD = ((thisrun_bytes - 1) >> 8) & 0xff;
 746                 if (type != SCAN_IN)
 747                 {
 748                         /* add complete bytes */
 749                         while(thisrun_bytes-- > 0)
 750                         {
 751                                 BUFFER_ADD = buffer[cur_byte];
 752                                 cur_byte++;
 753                                 bits_left -= 8;
 754                         }
 755                 }
 756                 else /* (type == SCAN_IN) */
 757                 {
 758                         bits_left -= 8 * (thisrun_bytes);
 759                 }
 760
 761                 if ((retval = ft2232_write(ft2232_buffer, ft2232_buffer_size, &bytes_written)) != ERROR_OK)
 762                 {
 763                         LOG_ERROR("couldn't write MPSSE commands to FT2232");
 764                         exit(-1);
 765                 }
 766                 LOG_DEBUG("ft2232_buffer_size: %i, bytes_written: %i", ft2232_buffer_size, bytes_written);
 767                 ft2232_buffer_size = 0;
 768
 769                 if (type != SCAN_OUT)
 770                 {
 771                         if ((retval = ft2232_read(receive_pointer, thisrun_read, &bytes_read)) != ERROR_OK)
 772                         {
 773                                 LOG_ERROR("couldn't read from FT2232");
 774                                 exit(-1);
 775                         }
 776                         LOG_DEBUG("thisrun_read: %i, bytes_read: %i", thisrun_read, bytes_read);
 777                         receive_pointer += bytes_read;
 778                 }
 779         }
 780
 781         thisrun_read = 0;
 782
 783         /* the most signifcant bit is scanned during TAP movement */
 784         if (type != SCAN_IN)
 785                 last_bit = (buffer[cur_byte] >> (bits_left - 1)) & 0x1;
 786         else
 787                 last_bit = 0;
 788
 789         /* process remaining bits but the last one */
 790         if (bits_left > 1)
 791         {
 792                 if (type == SCAN_IO)
 793                 {
 794                         /* Clock Data Bits In and Out LSB First */
 795                         BUFFER_ADD = 0x3b;
 796                         /* LOG_DEBUG("added TDI bits (io) %i", bits_left - 1); */
 797                 }
 798                 else if (type == SCAN_OUT)
 799                 {
 800                         /* Clock Data Bits Out on -ve Clock Edge LSB First (no Read) */
 801                         BUFFER_ADD = 0x1b;
 802                         /* LOG_DEBUG("added TDI bits (o)"); */
 803                 }
 804                 else if (type == SCAN_IN)
 805                 {
 806                         /* Clock Data Bits In on +ve Clock Edge LSB First (no Write) */
 807                         BUFFER_ADD = 0x2a;
 808                         /* LOG_DEBUG("added TDI bits (i %i)", bits_left - 1); */
 809                 }
 810                 BUFFER_ADD = bits_left - 2;
 811                 if (type != SCAN_IN)
 812                         BUFFER_ADD = buffer[cur_byte];
 813
 814                 if (type != SCAN_OUT)
 815                         thisrun_read += 2;
 816         }
 817
 818         if (end_state == TAP_SD)
 819         {
 820                 if (type == SCAN_IO)
 821                 {
 822                         /* Clock Data Bits In and Out LSB First */
 823                         BUFFER_ADD = 0x3b;
 824                         /* LOG_DEBUG("added TDI bits (io) %i", bits_left - 1); */
 825                 }
 826                 else if (type == SCAN_OUT)
 827                 {
 828                         /* Clock Data Bits Out on -ve Clock Edge LSB First (no Read) */
 829                         BUFFER_ADD = 0x1b;
 830                         /* LOG_DEBUG("added TDI bits (o)"); */
 831                 }
 832                 else if (type == SCAN_IN)
 833                 {
 834                         /* Clock Data Bits In on +ve Clock Edge LSB First (no Write) */
 835                         BUFFER_ADD = 0x2a;
 836                         /* LOG_DEBUG("added TDI bits (i %i)", bits_left - 1); */
 837                 }
 838                 BUFFER_ADD = 0x0;
 839                 BUFFER_ADD = last_bit;
 840         }
 841         else
 842         {
 843                 /* move from Shift-IR/DR to end state */
 844                 if (type != SCAN_OUT)
 845                 {
 846                         /* Clock Data to TMS/CS Pin with Read */
 847                         BUFFER_ADD = 0x6b;
 848                         /* LOG_DEBUG("added TMS scan (read)"); */
 849                 }
 850                 else
 851                 {
 852                         /* Clock Data to TMS/CS Pin (no Read) */
 853                         BUFFER_ADD = 0x4b;
 854                         /* LOG_DEBUG("added TMS scan (no read)"); */
 855                 }
 856                 BUFFER_ADD = 0x6;
 857                 BUFFER_ADD = TAP_MOVE(cur_state, end_state) | (last_bit << 7);
 858                 cur_state = end_state;
 859         }
 860
 861         if (type != SCAN_OUT)
 862                 thisrun_read += 1;
 863
 864         if ((retval = ft2232_write(ft2232_buffer, ft2232_buffer_size, &bytes_written)) != ERROR_OK)
 865         {
 866                 LOG_ERROR("couldn't write MPSSE commands to FT2232");
 867                 exit(-1);
 868         }
 869         LOG_DEBUG("ft2232_buffer_size: %i, bytes_written: %i", ft2232_buffer_size, bytes_written);
 870         ft2232_buffer_size = 0;
 871
 872         if (type != SCAN_OUT)
 873         {
 874                 if ((retval = ft2232_read(receive_pointer, thisrun_read, &bytes_read)) != ERROR_OK)
 875                 {
 876                         LOG_ERROR("couldn't read from FT2232");
 877                         exit(-1);
 878                 }
 879                 LOG_DEBUG("thisrun_read: %i, bytes_read: %i", thisrun_read, bytes_read);
 880                 receive_pointer += bytes_read;
 881         }
 882
 883         return ERROR_OK;
 884 }
 885
 886 int ft2232_predict_scan_out(int scan_size, enum scan_type type)
 887 {
 888         int predicted_size = 3;
 889         int num_bytes = (scan_size - 1) / 8;
 890
 891         if (cur_state != TAP_SD)
 892                 predicted_size += 3;
 893
 894         if (type == SCAN_IN)    /* only from device to host */
 895         {
 896                 /* complete bytes */
 897                 predicted_size += (CEIL(num_bytes, 65536)) * 3;
 898                 /* remaining bits - 1 (up to 7) */
 899                 predicted_size += ((scan_size - 1) % 8) ? 2 : 0;
 900         }
 901         else                                    /* host to device, or bidirectional */
 902         {
 903                 /* complete bytes */
 904                 predicted_size += num_bytes + (CEIL(num_bytes, 65536)) * 3;
 905                 /* remaining bits -1 (up to 7) */
 906                 predicted_size += ((scan_size - 1) % 8) ? 3 : 0;
 907         }
 908
 909         return predicted_size;
 910 }
 911
 912 int ft2232_predict_scan_in(int scan_size, enum scan_type type)
 913 {
 914         int predicted_size = 0;
 915
 916         if (type != SCAN_OUT)
 917         {
 918                 /* complete bytes */
 919                 predicted_size += (CEIL(scan_size, 8) > 1) ? (CEIL(scan_size, 8) - 1) : 0;
 920                 /* remaining bits - 1 */
 921                 predicted_size += ((scan_size - 1) % 8) ? 1 : 0;
 922                 /* last bit (from TMS scan) */
 923                 predicted_size += 1;
 924         }
 925
 926         /* LOG_DEBUG("scan_size: %i, predicted_size: %i", scan_size, predicted_size); */
 927
 928         return predicted_size;
 929 }
 930
 931 void usbjtag_reset(int trst, int srst)
 932 {
 933         if (trst == 1)
 934         {
 935                 if (jtag_reset_config & RESET_TRST_OPEN_DRAIN)
 936                         low_direction |= nTRSTnOE;      /* switch to output pin (output is low) */
 937                 else
 938                         low_output &= ~nTRST;   /* switch output low */
 939         }
 940         else if (trst == 0)
 941         {
 942                 if (jtag_reset_config & RESET_TRST_OPEN_DRAIN)
 943                         low_direction &= ~nTRSTnOE; /* switch to input pin (high-Z + internal and external pullup) */
 944                 else
 945                         low_output |= nTRST; /* switch output high */
 946         }
 947
 948         if (srst == 1)
 949         {
 950                 if (jtag_reset_config & RESET_SRST_PUSH_PULL)
 951                         low_output &= ~nSRST;   /* switch output low */
 952                 else
 953                         low_direction |= nSRSTnOE;      /* switch to output pin (output is low) */
 954         }
 955         else if (srst == 0)
 956         {
 957                 if (jtag_reset_config & RESET_SRST_PUSH_PULL)
 958                         low_output |= nSRST;    /* switch output high */
 959                 else
 960                         low_direction &= ~nSRSTnOE;     /* switch to input pin (high-Z) */
 961         }
 962
 963         /* command "set data bits low byte" */
 964         BUFFER_ADD = 0x80;
 965         BUFFER_ADD = low_output;
 966         BUFFER_ADD = low_direction;
 967
 968 }
 969
 970 void jtagkey_reset(int trst, int srst)
 971 {
 972         if (trst == 1)
 973         {
 974                 if (jtag_reset_config & RESET_TRST_OPEN_DRAIN)
 975                         high_output &= ~nTRSTnOE;
 976                 else
 977                         high_output &= ~nTRST;
 978         }
 979         else if (trst == 0)
 980         {
 981                 if (jtag_reset_config & RESET_TRST_OPEN_DRAIN)
 982                         high_output |= nTRSTnOE;
 983                 else
 984                         high_output |= nTRST;
 985         }
 986
 987         if (srst == 1)
 988         {
 989                 if (jtag_reset_config & RESET_SRST_PUSH_PULL)
 990                         high_output &= ~nSRST;
 991                 else
 992                         high_output &= ~nSRSTnOE;
 993         }
 994         else if (srst == 0)
 995         {
 996                 if (jtag_reset_config & RESET_SRST_PUSH_PULL)
 997                         high_output |= nSRST;
 998                 else
 999                         high_output |= nSRSTnOE;
1000         }
1001
1002         /* command "set data bits high byte" */
1003         BUFFER_ADD = 0x82;
1004         BUFFER_ADD = high_output;
1005         BUFFER_ADD = high_direction;
1006         LOG_DEBUG("trst: %i, srst: %i, high_output: 0x%2.2x, high_direction: 0x%2.2x", trst, srst, high_output, high_direction);
1007 }
1008
1009 void olimex_jtag_reset(int trst, int srst)
1010 {
1011         if (trst == 1)
1012         {
1013                 if (jtag_reset_config & RESET_TRST_OPEN_DRAIN)
1014                         high_output &= ~nTRSTnOE;
1015                 else
1016                         high_output &= ~nTRST;
1017         }
1018         else if (trst == 0)
1019         {
1020                 if (jtag_reset_config & RESET_TRST_OPEN_DRAIN)
1021                         high_output |= nTRSTnOE;
1022                 else
1023                         high_output |= nTRST;
1024         }
1025
1026     if (srst == 1)
1027     {
1028         high_output |= nSRST;
1029     }
1030     else if (srst == 0)
1031     {
1032         high_output &= ~nSRST;
1033     }
1034
1035     /* command "set data bits high byte" */
1036     BUFFER_ADD = 0x82;
1037     BUFFER_ADD = high_output;
1038     BUFFER_ADD = high_direction;
1039     LOG_DEBUG("trst: %i, srst: %i, high_output: 0x%2.2x, high_direction: 0x%2.2x", trst, srst, high_output, high_direction);
1040 }
1041
1042 void flyswatter_reset(int trst, int srst)
1043 {
1044         if (trst == 1)
1045         {
1046                 low_output &= ~nTRST;
1047         }
1048         else if (trst == 0)
1049         {
1050                 low_output |= nTRST;
1051         }
1052
1053     if (srst == 1)
1054     {
1055         low_output |= nSRST;
1056     }
1057     else if (srst == 0)
1058     {
1059         low_output &= ~nSRST;
1060     }
1061
1062     /* command "set data bits low byte" */
1063     BUFFER_ADD = 0x80;
1064     BUFFER_ADD = low_output;
1065     BUFFER_ADD = low_direction;
1066     LOG_DEBUG("trst: %i, srst: %i, low_output: 0x%2.2x, low_direction: 0x%2.2x", trst, srst, low_output, low_direction);
1067 }
1068
1069 void turtle_reset(int trst, int srst)
1070 {
1071         trst = trst;
1072
1073         if (srst == 1)
1074         {
1075                 low_output |= nSRST;
1076         }
1077         else if (srst == 0)
1078         {
1079                 low_output &= ~nSRST;
1080         }
1081
1082         /* command "set data bits low byte" */
1083         BUFFER_ADD = 0x80;
1084         BUFFER_ADD = low_output;
1085         BUFFER_ADD = low_direction;
1086         LOG_DEBUG("srst: %i, low_output: 0x%2.2x, low_direction: 0x%2.2x", srst, low_output, low_direction);
1087 }
1088
1089 void comstick_reset(int trst, int srst)
1090 {
1091         if (trst == 1)
1092         {
1093                 high_output &= ~nTRST;
1094         }
1095         else if (trst == 0)
1096         {
1097                 high_output |= nTRST;
1098         }
1099
1100     if (srst == 1)
1101     {
1102         high_output &= ~nSRST;
1103     }
1104     else if (srst == 0)
1105     {
1106         high_output |= nSRST;
1107     }
1108
1109         /* command "set data bits high byte" */
1110         BUFFER_ADD = 0x82;
1111         BUFFER_ADD = high_output;
1112         BUFFER_ADD = high_direction;
1113         LOG_DEBUG("trst: %i, srst: %i, high_output: 0x%2.2x, high_direction: 0x%2.2x", trst, srst, high_output, high_direction);
1114 }
1115
1116 void stm32stick_reset(int trst, int srst)
1117 {
1118         if (trst == 1)
1119         {
1120                 high_output &= ~nTRST;
1121         }
1122         else if (trst == 0)
1123         {
1124                 high_output |= nTRST;
1125         }
1126
1127     if (srst == 1)
1128     {
1129         low_output &= ~nSRST;
1130     }
1131     else if (srst == 0)
1132     {
1133         low_output |= nSRST;
1134     }
1135
1136         /* command "set data bits low byte" */
1137         BUFFER_ADD = 0x80;
1138         BUFFER_ADD = low_output;
1139         BUFFER_ADD = low_direction;
1140
1141         /* command "set data bits high byte" */
1142         BUFFER_ADD = 0x82;
1143         BUFFER_ADD = high_output;
1144         BUFFER_ADD = high_direction;
1145         LOG_DEBUG("trst: %i, srst: %i, high_output: 0x%2.2x, high_direction: 0x%2.2x", trst, srst, high_output, high_direction);
1146 }
1147
1148 int ft2232_execute_queue()
1149 {
1150         jtag_command_t *cmd = jtag_command_queue; /* currently processed command */
1151         jtag_command_t *first_unsent = cmd;     /* next command that has to be sent */
1152         u8 *buffer;
1153         int scan_size;  /* size of IR or DR scan */
1154         enum scan_type type;
1155         int i;
1156         int predicted_size = 0;
1157         int require_send = 0;
1158         int retval;
1159
1160         /* return ERROR_OK, unless ft2232_send_and_recv reports a failed check
1161          * that wasn't handled by a caller-provided error handler
1162          */
1163         retval = ERROR_OK;
1164
1165         ft2232_buffer_size = 0;
1166         ft2232_expect_read = 0;
1167
1168         /* blink, if the current layout has that feature */
1169         if (layout->blink)
1170                 layout->blink();
1171
1172         while (cmd)
1173         {
1174                 switch(cmd->type)
1175                 {
1176                         case JTAG_END_STATE:
1177                                 if (cmd->cmd.end_state->end_state != -1)
1178                                         ft2232_end_state(cmd->cmd.end_state->end_state);
1179                                 break;
1180                         case JTAG_RESET:
1181                                 /* only send the maximum buffer size that FT2232C can handle */
1182                                 predicted_size = 3;
1183                                 if (ft2232_buffer_size + predicted_size + 1 > FT2232_BUFFER_SIZE)
1184                                 {
1185                                         if (ft2232_send_and_recv(first_unsent, cmd) != ERROR_OK)
1186                                                 retval = ERROR_JTAG_QUEUE_FAILED;
1187                                         require_send = 0;
1188                                         first_unsent = cmd;
1189                                 }
1190
1191                                 if ((cmd->cmd.reset->trst == 1) || (cmd->cmd.reset->srst && (jtag_reset_config & RESET_SRST_PULLS_TRST)))
1192                                 {
1193                                         cur_state = TAP_TLR;
1194                                 }
1195                                 layout->reset(cmd->cmd.reset->trst, cmd->cmd.reset->srst);
1196                                 require_send = 1;
1197
1198 #ifdef _DEBUG_JTAG_IO_
1199                                 LOG_DEBUG("trst: %i, srst: %i", cmd->cmd.reset->trst, cmd->cmd.reset->srst);
1200 #endif
1201                                 break;
1202                         case JTAG_RUNTEST:
1203                                 /* only send the maximum buffer size that FT2232C can handle */
1204                                 predicted_size = 0;
1205                                 if (cur_state != TAP_RTI)
1206                                         predicted_size += 3;
1207                                 predicted_size += 3 * CEIL(cmd->cmd.runtest->num_cycles, 7);
1208                                 if ((cmd->cmd.runtest->end_state != -1) && (cmd->cmd.runtest->end_state != TAP_RTI))
1209                                         predicted_size += 3;
1210                                 if ((cmd->cmd.runtest->end_state == -1) && (end_state != TAP_RTI))
1211                                         predicted_size += 3;
1212                                 if (ft2232_buffer_size + predicted_size + 1 > FT2232_BUFFER_SIZE)
1213                                 {
1214                                         if (ft2232_send_and_recv(first_unsent, cmd) != ERROR_OK)
1215                                                 retval = ERROR_JTAG_QUEUE_FAILED;
1216                                         require_send = 0;
1217                                         first_unsent = cmd;
1218                                 }
1219                                 if (cur_state != TAP_RTI)
1220                                 {
1221                                         /* command "Clock Data to TMS/CS Pin (no Read)" */
1222                                         BUFFER_ADD = 0x4b;
1223                                         /* scan 7 bit */
1224                                         BUFFER_ADD = 0x6;
1225                                         /* TMS data bits */
1226                                         BUFFER_ADD = TAP_MOVE(cur_state, TAP_RTI);
1227                                         cur_state = TAP_RTI;
1228                                         require_send = 1;
1229                                 }
1230                                 i = cmd->cmd.runtest->num_cycles;
1231                                 while (i > 0)
1232                                 {
1233                                         /* command "Clock Data to TMS/CS Pin (no Read)" */
1234                                         BUFFER_ADD = 0x4b;
1235                                         /* scan 7 bit */
1236                                         BUFFER_ADD = (i > 7) ? 6 : (i - 1);
1237                                         /* TMS data bits */
1238                                         BUFFER_ADD = 0x0;
1239                                         cur_state = TAP_RTI;
1240                                         i -= (i > 7) ? 7 : i;
1241                                         /* LOG_DEBUG("added TMS scan (no read)"); */
1242                                 }
1243                                 if (cmd->cmd.runtest->end_state != -1)
1244                                         ft2232_end_state(cmd->cmd.runtest->end_state);
1245                                 if (cur_state != end_state)
1246                                 {
1247                                         /* command "Clock Data to TMS/CS Pin (no Read)" */
1248                                         BUFFER_ADD = 0x4b;
1249                                         /* scan 7 bit */
1250                                         BUFFER_ADD = 0x6;
1251                                         /* TMS data bits */
1252                                         BUFFER_ADD = TAP_MOVE(cur_state, end_state);
1253                                         cur_state = end_state;
1254                                         /* LOG_DEBUG("added TMS scan (no read)"); */
1255                                 }
1256                                 require_send = 1;
1257 #ifdef _DEBUG_JTAG_IO_
1258                                 LOG_DEBUG("runtest: %i, end in %i", cmd->cmd.runtest->num_cycles, end_state);
1259 #endif
1260                                 break;
1261                         case JTAG_STATEMOVE:
1262                                 /* only send the maximum buffer size that FT2232C can handle */
1263                                 predicted_size = 3;
1264                                 if (ft2232_buffer_size + predicted_size + 1 > FT2232_BUFFER_SIZE)
1265                                 {
1266                                         if (ft2232_send_and_recv(first_unsent, cmd) != ERROR_OK)
1267                                                 retval = ERROR_JTAG_QUEUE_FAILED;
1268                                         require_send = 0;
1269                                         first_unsent = cmd;
1270                                 }
1271                                 if (cmd->cmd.statemove->end_state != -1)
1272                                         ft2232_end_state(cmd->cmd.statemove->end_state);
1273                                 /* command "Clock Data to TMS/CS Pin (no Read)" */
1274                                 BUFFER_ADD = 0x4b;
1275                                 /* scan 7 bit */
1276                                 BUFFER_ADD = 0x6;
1277                                 /* TMS data bits */
1278                                 BUFFER_ADD = TAP_MOVE(cur_state, end_state);
1279                                 /* LOG_DEBUG("added TMS scan (no read)"); */
1280                                 cur_state = end_state;
1281                                 require_send = 1;
1282 #ifdef _DEBUG_JTAG_IO_
1283                                 LOG_DEBUG("statemove: %i", end_state);
1284 #endif
1285                                 break;
1286                         case JTAG_PATHMOVE:
1287                                 /* only send the maximum buffer size that FT2232C can handle */
1288                                 predicted_size = 3 * CEIL(cmd->cmd.pathmove->num_states, 7);
1289                                 if (ft2232_buffer_size + predicted_size + 1 > FT2232_BUFFER_SIZE)
1290                                 {
1291                                         if (ft2232_send_and_recv(first_unsent, cmd) != ERROR_OK)
1292                                                 retval = ERROR_JTAG_QUEUE_FAILED;
1293                                         require_send = 0;
1294                                         first_unsent = cmd;
1295                                 }
1296                                 ft2232_add_pathmove(cmd->cmd.pathmove);
1297                                 require_send = 1;
1298 #ifdef _DEBUG_JTAG_IO_
1299                                 LOG_DEBUG("pathmove: %i states, end in %i", cmd->cmd.pathmove->num_states, cmd->cmd.pathmove->path[cmd->cmd.pathmove->num_states - 1]);
1300 #endif
1301                                 break;
1302                         case JTAG_SCAN:
1303                                 scan_size = jtag_build_buffer(cmd->cmd.scan, &buffer);
1304                                 type = jtag_scan_type(cmd->cmd.scan);
1305                                 predicted_size = ft2232_predict_scan_out(scan_size, type);
1306                                 if ((predicted_size + 1) > FT2232_BUFFER_SIZE)
1307                                 {
1308                                         LOG_DEBUG("oversized ft2232 scan (predicted_size > FT2232_BUFFER_SIZE)");
1309                                         /* unsent commands before this */
1310                                         if (first_unsent != cmd)
1311                                                 if (ft2232_send_and_recv(first_unsent, cmd) != ERROR_OK)
1312                                                         retval = ERROR_JTAG_QUEUE_FAILED;
1313
1314                                         /* current command */
1315                                         if (cmd->cmd.scan->end_state != -1)
1316                                                 ft2232_end_state(cmd->cmd.scan->end_state);
1317                                         ft2232_large_scan(cmd->cmd.scan, type, buffer, scan_size);
1318                                         require_send = 0;
1319                                         first_unsent = cmd->next;
1320                                         if (buffer)
1321                                                 free(buffer);
1322                                         break;
1323                                 }
1324                                 else if (ft2232_buffer_size + predicted_size + 1 > FT2232_BUFFER_SIZE)
1325                                 {
1326                                         LOG_DEBUG("ft2232 buffer size reached, sending queued commands (first_unsent: %p, cmd: %p)", first_unsent, cmd);
1327                                         if (ft2232_send_and_recv(first_unsent, cmd) != ERROR_OK)
1328                                                 retval = ERROR_JTAG_QUEUE_FAILED;
1329                                         require_send = 0;
1330                                         first_unsent = cmd;
1331                                 }
1332                                 ft2232_expect_read += ft2232_predict_scan_in(scan_size, type);
1333                                 /* LOG_DEBUG("new read size: %i", ft2232_expect_read); */
1334                                 if (cmd->cmd.scan->end_state != -1)
1335                                         ft2232_end_state(cmd->cmd.scan->end_state);
1336                                 ft2232_add_scan(cmd->cmd.scan->ir_scan, type, buffer, scan_size);
1337                                 require_send = 1;
1338                                 if (buffer)
1339                                         free(buffer);
1340 #ifdef _DEBUG_JTAG_IO_
1341                                 LOG_DEBUG("%s scan, %i bit, end in %i", (cmd->cmd.scan->ir_scan) ? "IR" : "DR", scan_size, end_state);
1342 #endif
1343                                 break;
1344                         case JTAG_SLEEP:
1345                                 if (ft2232_send_and_recv(first_unsent, cmd) != ERROR_OK)
1346                                         retval = ERROR_JTAG_QUEUE_FAILED;
1347                                 first_unsent = cmd->next;
1348                                 jtag_sleep(cmd->cmd.sleep->us);
1349 #ifdef _DEBUG_JTAG_IO_
1350                                 LOG_DEBUG("sleep %i usec", cmd->cmd.sleep->us);
1351 #endif
1352                                 break;
1353                         default:
1354                                 LOG_ERROR("BUG: unknown JTAG command type encountered");
1355                                 exit(-1);
1356                 }
1357                 cmd = cmd->next;
1358         }
1359
1360         if (require_send > 0)
1361                 if (ft2232_send_and_recv(first_unsent, cmd) != ERROR_OK)
1362                         retval = ERROR_JTAG_QUEUE_FAILED;
1363
1364         return retval;
1365 }
1366
1367 #if BUILD_FT2232_FTD2XX == 1
1368 static int ft2232_init_ftd2xx(u16 vid, u16 pid, int more, int *try_more)
1369 {
1370         FT_STATUS status;
1371         DWORD openex_flags = 0;
1372         char *openex_string = NULL;
1373         u8 latency_timer;
1374
1375         LOG_DEBUG("'ft2232' interface using FTD2XX with '%s' layout (%4.4x:%4.4x)",
1376             ft2232_layout, vid, pid);
1377
1378 #if IS_WIN32 == 0
1379         /* Add non-standard Vid/Pid to the linux driver */
1380         if ((status = FT_SetVIDPID(vid, pid)) != FT_OK)
1381         {
1382                 LOG_WARNING("couldn't add %4.4x:%4.4x",
1383                     vid, pid);
1384         }
1385 #endif
1386
1387         if (ft2232_device_desc && ft2232_serial)
1388         {
1389                 LOG_WARNING("can't open by device description and serial number, giving precedence to serial");
1390                 ft2232_device_desc = NULL;
1391         }
1392
1393         if (ft2232_device_desc)
1394         {
1395                 openex_string = ft2232_device_desc;
1396                 openex_flags = FT_OPEN_BY_DESCRIPTION;
1397         }
1398         else if (ft2232_serial)
1399         {
1400                 openex_string = ft2232_serial;
1401                 openex_flags = FT_OPEN_BY_SERIAL_NUMBER;
1402         }
1403         else
1404         {
1405                 LOG_ERROR("neither device description nor serial number specified");
1406                 LOG_ERROR("please add \"ft2232_device_desc <string>\" or \"ft2232_serial <string>\" to your .cfg file");
1407
1408                 return ERROR_JTAG_INIT_FAILED;
1409         }
1410
1411         if ((status = FT_OpenEx(openex_string, openex_flags, &ftdih)) != FT_OK)
1412         {
1413                 DWORD num_devices;
1414
1415                 if (more) {
1416                         LOG_WARNING("unable to open ftdi device (trying more): %lu",
1417                             status);
1418                         *try_more = 1;
1419                         return ERROR_JTAG_INIT_FAILED;
1420                 }
1421                 LOG_ERROR("unable to open ftdi device: %lu", status);
1422                 status = FT_ListDevices(&num_devices, NULL, FT_LIST_NUMBER_ONLY);
1423                 if (status == FT_OK)
1424                 {
1425                         char **desc_array = malloc(sizeof(char*) * (num_devices + 1));
1426                         int i;
1427
1428                         for (i = 0; i < num_devices; i++)
1429                                 desc_array[i] = malloc(64);
1430                         desc_array[num_devices] = NULL;
1431
1432                         status = FT_ListDevices(desc_array, &num_devices, FT_LIST_ALL | openex_flags);
1433
1434                         if (status == FT_OK)
1435                         {
1436                                 LOG_ERROR("ListDevices: %lu\n", num_devices);
1437                                 for (i = 0; i < num_devices; i++)
1438                                         LOG_ERROR("%i: %s", i, desc_array[i]);
1439                         }
1440
1441                         for (i = 0; i < num_devices; i++)
1442                                 free(desc_array[i]);
1443                         free(desc_array);
1444                 }
1445                 else
1446                 {
1447                         LOG_ERROR("ListDevices: NONE\n");
1448                 }
1449                 return ERROR_JTAG_INIT_FAILED;
1450         }
1451
1452         if ((status = FT_SetLatencyTimer(ftdih, ft2232_latency)) != FT_OK)
1453         {
1454                 LOG_ERROR("unable to set latency timer: %lu", status);
1455                 return ERROR_JTAG_INIT_FAILED;
1456         }
1457
1458         if ((status = FT_GetLatencyTimer(ftdih, &latency_timer)) != FT_OK)
1459         {
1460                 LOG_ERROR("unable to get latency timer: %lu", status);
1461                 return ERROR_JTAG_INIT_FAILED;
1462         }
1463         else
1464         {
1465                 LOG_DEBUG("current latency timer: %i", latency_timer);
1466         }
1467
1468         if ((status = FT_SetTimeouts(ftdih, 5000, 5000)) != FT_OK)
1469         {
1470                 LOG_ERROR("unable to set timeouts: %lu", status);
1471                 return ERROR_JTAG_INIT_FAILED;
1472         }
1473
1474         if ((status = FT_SetBitMode(ftdih, 0x0b, 2)) != FT_OK)
1475         {
1476                 LOG_ERROR("unable to enable bit i/o mode: %lu", status);
1477                 return ERROR_JTAG_INIT_FAILED;
1478         }
1479
1480         return ERROR_OK;
1481 }
1482
1483 static int ft2232_purge_ftd2xx(void)
1484 {
1485         FT_STATUS status;
1486
1487         if ((status = FT_Purge(ftdih, FT_PURGE_RX | FT_PURGE_TX)) != FT_OK)
1488         {
1489                 LOG_ERROR("error purging ftd2xx device: %lu", status);
1490                 return ERROR_JTAG_INIT_FAILED;
1491         }
1492
1493         return ERROR_OK;
1494 }
1495 #endif /* BUILD_FT2232_FTD2XX == 1 */
1496
1497 #if BUILD_FT2232_LIBFTDI == 1
1498 static int ft2232_init_libftdi(u16 vid, u16 pid, int more, int *try_more)
1499 {
1500         u8 latency_timer;
1501
1502         LOG_DEBUG("'ft2232' interface using libftdi with '%s' layout (%4.4x:%4.4x)",
1503             ft2232_layout, vid, pid);
1504
1505         if (ftdi_init(&ftdic) < 0)
1506                 return ERROR_JTAG_INIT_FAILED;
1507
1508         /* context, vendor id, product id */
1509         if (ftdi_usb_open_desc(&ftdic, vid, pid, ft2232_device_desc,
1510             ft2232_serial) < 0) {
1511                 if (more)
1512                         LOG_WARNING("unable to open ftdi device (trying more): %s",
1513                              ftdic.error_str);
1514                 else
1515                         LOG_ERROR("unable to open ftdi device: %s", ftdic.error_str);
1516                 *try_more = 1;
1517                 return ERROR_JTAG_INIT_FAILED;
1518         }
1519
1520         if (ftdi_set_interface(&ftdic, INTERFACE_A) < 0)
1521         {
1522                 LOG_ERROR("unable to select FT2232 channel A: %s", ftdic.error_str);
1523                 return ERROR_JTAG_INIT_FAILED;
1524         }
1525
1526         if (ftdi_usb_reset(&ftdic) < 0)
1527         {
1528                 LOG_ERROR("unable to reset ftdi device");
1529                 return ERROR_JTAG_INIT_FAILED;
1530         }
1531
1532         if (ftdi_set_latency_timer(&ftdic, ft2232_latency) < 0)
1533         {
1534                 LOG_ERROR("unable to set latency timer");
1535                 return ERROR_JTAG_INIT_FAILED;
1536         }
1537
1538         if (ftdi_get_latency_timer(&ftdic, &latency_timer) < 0)
1539         {
1540                 LOG_ERROR("unable to get latency timer");
1541                 return ERROR_JTAG_INIT_FAILED;
1542         }
1543         else
1544         {
1545                 LOG_DEBUG("current latency timer: %i", latency_timer);
1546         }
1547
1548         ftdi_set_bitmode(&ftdic, 0x0b, 2); /* ctx, JTAG I/O mask */
1549
1550         return ERROR_OK;
1551 }
1552
1553 static int ft2232_purge_libftdi(void)
1554 {
1555         if (ftdi_usb_purge_buffers(&ftdic) < 0)
1556         {
1557                 LOG_ERROR("ftdi_purge_buffers: %s", ftdic.error_str);
1558                 return ERROR_JTAG_INIT_FAILED;
1559         }
1560
1561         return ERROR_OK;
1562 }
1563 #endif /* BUILD_FT2232_LIBFTDI == 1 */
1564
1565 int ft2232_init(void)
1566 {
1567         u8 buf[1];
1568         int retval;
1569         u32 bytes_written;
1570         ft2232_layout_t *cur_layout = ft2232_layouts;
1571         int i;
1572
1573         if ((ft2232_layout == NULL) || (ft2232_layout[0] == 0))
1574         {
1575                 ft2232_layout = "usbjtag";
1576                 LOG_WARNING("No ft2232 layout specified, using default 'usbjtag'");
1577         }
1578
1579         while (cur_layout->name)
1580         {
1581                 if (strcmp(cur_layout->name, ft2232_layout) == 0)
1582                 {
1583                         layout = cur_layout;
1584                         break;
1585                 }
1586                 cur_layout++;
1587         }
1588
1589         if (!layout)
1590         {
1591                 LOG_ERROR("No matching layout found for %s", ft2232_layout);
1592                 return ERROR_JTAG_INIT_FAILED;
1593         }
1594
1595         for (i = 0; 1; i++) {
1596                 /*
1597                  * "more indicates that there are more IDs to try, so we should
1598                  * not print an error for an ID mismatch (but for anything
1599                  * else, we should).
1600                  *
1601                  * try_more indicates that the error code returned indicates an
1602                  * ID mismatch (and nothing else) and that we should proceeed
1603                  * with the next ID pair.
1604                  */
1605                 int more = ft2232_vid[i+1] || ft2232_pid[i+1];
1606                 int try_more = 0;
1607
1608 #if BUILD_FT2232_FTD2XX == 1
1609                 retval = ft2232_init_ftd2xx(ft2232_vid[i], ft2232_pid[i],
1610                     more, &try_more);
1611 #elif BUILD_FT2232_LIBFTDI == 1
1612                 retval = ft2232_init_libftdi(ft2232_vid[i], ft2232_pid[i],
1613                     more, &try_more);
1614 #endif
1615                 if (retval >= 0)
1616                         break;
1617                 if (!more || !try_more)
1618                         return retval;
1619         }
1620
1621         ft2232_buffer_size = 0;
1622         ft2232_buffer = malloc(FT2232_BUFFER_SIZE);
1623
1624         if (layout->init() != ERROR_OK)
1625                 return ERROR_JTAG_INIT_FAILED;
1626
1627         ft2232_speed(jtag_speed);
1628
1629         buf[0] = 0x85; /* Disconnect TDI/DO to TDO/DI for Loopback */
1630         if (((retval = ft2232_write(buf, 1, &bytes_written)) != ERROR_OK) || (bytes_written != 1))
1631         {
1632                 LOG_ERROR("couldn't write to FT2232 to disable loopback");
1633                 return ERROR_JTAG_INIT_FAILED;
1634         }
1635
1636 #if BUILD_FT2232_FTD2XX == 1
1637         return ft2232_purge_ftd2xx();
1638 #elif BUILD_FT2232_LIBFTDI == 1
1639         return ft2232_purge_libftdi();
1640 #endif
1641
1642         return ERROR_OK;
1643 }
1644
1645 int usbjtag_init(void)
1646 {
1647         u8 buf[3];
1648         u32 bytes_written;
1649
1650         low_output = 0x08;
1651         low_direction = 0x0b;
1652
1653         if (strcmp(ft2232_layout, "usbjtag") == 0)
1654         {
1655                 nTRST = 0x10;
1656                 nTRSTnOE = 0x10;
1657                 nSRST = 0x40;
1658                 nSRSTnOE = 0x40;
1659         }
1660         else if (strcmp(ft2232_layout, "signalyzer") == 0)
1661         {
1662                 nTRST = 0x10;
1663                 nTRSTnOE = 0x10;
1664                 nSRST = 0x20;
1665                 nSRSTnOE = 0x20;
1666         }
1667         else if (strcmp(ft2232_layout, "evb_lm3s811") == 0)
1668         {
1669                 nTRST = 0x0;
1670                 nTRSTnOE = 0x00;
1671                 nSRST = 0x20;
1672                 nSRSTnOE = 0x20;
1673                 low_output = 0x88;
1674                 low_direction = 0x8b;
1675         }
1676         else
1677         {
1678                 LOG_ERROR("BUG: usbjtag_init called for unknown layout '%s'", ft2232_layout);
1679                 return ERROR_JTAG_INIT_FAILED;
1680         }
1681
1682         if (jtag_reset_config & RESET_TRST_OPEN_DRAIN)
1683         {
1684                 low_direction &= ~nTRSTnOE; /* nTRST input */
1685                 low_output &= ~nTRST; /* nTRST = 0 */
1686         }
1687         else
1688         {
1689                 low_direction |= nTRSTnOE; /* nTRST output */
1690                 low_output |= nTRST; /* nTRST = 1 */
1691         }
1692
1693         if (jtag_reset_config & RESET_SRST_PUSH_PULL)
1694         {
1695                 low_direction |= nSRSTnOE; /* nSRST output */
1696                 low_output |= nSRST; /* nSRST = 1 */
1697         }
1698         else
1699         {
1700                 low_direction &= ~nSRSTnOE; /* nSRST input */
1701                 low_output &= ~nSRST; /* nSRST = 0 */
1702         }
1703
1704         /* initialize low byte for jtag */
1705         buf[0] = 0x80; /* command "set data bits low byte" */
1706         buf[1] = low_output; /* value (TMS=1,TCK=0, TDI=0, xRST high) */
1707         buf[2] = low_direction; /* dir (output=1), TCK/TDI/TMS=out, TDO=in */
1708         LOG_DEBUG("%2.2x %2.2x %2.2x", buf[0], buf[1], buf[2]);
1709
1710         if (((ft2232_write(buf, 3, &bytes_written)) != ERROR_OK) || (bytes_written != 3))
1711         {
1712                 LOG_ERROR("couldn't initialize FT2232 with 'USBJTAG' layout");
1713                 return ERROR_JTAG_INIT_FAILED;
1714         }
1715
1716         return ERROR_OK;
1717 }
1718
1719 int jtagkey_init(void)
1720 {
1721         u8 buf[3];
1722         u32 bytes_written;
1723
1724         low_output = 0x08;
1725         low_direction = 0x1b;
1726
1727         /* initialize low byte for jtag */
1728         buf[0] = 0x80; /* command "set data bits low byte" */
1729         buf[1] = low_output; /* value (TMS=1,TCK=0, TDI=0, nOE=0) */
1730         buf[2] = low_direction; /* dir (output=1), TCK/TDI/TMS=out, TDO=in, nOE=out */
1731         LOG_DEBUG("%2.2x %2.2x %2.2x", buf[0], buf[1], buf[2]);
1732
1733         if (((ft2232_write(buf, 3, &bytes_written)) != ERROR_OK) || (bytes_written != 3))
1734         {
1735                 LOG_ERROR("couldn't initialize FT2232 with 'JTAGkey' layout");
1736                 return ERROR_JTAG_INIT_FAILED;
1737         }
1738
1739         if (strcmp(layout->name, "jtagkey") == 0)
1740         {
1741                 nTRST = 0x01;
1742                 nTRSTnOE = 0x4;
1743                 nSRST = 0x02;
1744                 nSRSTnOE = 0x08;
1745         }
1746         else if ((strcmp(layout->name, "jtagkey_prototype_v1") == 0) ||
1747                 (strcmp(layout->name, "oocdlink") == 0))
1748         {
1749                 nTRST = 0x02;
1750                 nTRSTnOE = 0x1;
1751                 nSRST = 0x08;
1752                 nSRSTnOE = 0x04;
1753         }
1754         else
1755         {
1756                 LOG_ERROR("BUG: jtagkey_init called for non jtagkey layout");
1757                 exit(-1);
1758         }
1759
1760         high_output = 0x0;
1761         high_direction = 0x0f;
1762
1763         if (jtag_reset_config & RESET_TRST_OPEN_DRAIN)
1764         {
1765                 high_output |= nTRSTnOE;
1766                 high_output &= ~nTRST;
1767         }
1768         else
1769         {
1770                 high_output &= ~nTRSTnOE;
1771                 high_output |= nTRST;
1772         }
1773
1774         if (jtag_reset_config & RESET_SRST_PUSH_PULL)
1775         {
1776                 high_output &= ~nSRSTnOE;
1777                 high_output |= nSRST;
1778         }
1779         else
1780         {
1781                 high_output |= nSRSTnOE;
1782                 high_output &= ~nSRST;
1783         }
1784
1785         /* initialize high port */
1786         buf[0] = 0x82; /* command "set data bits high byte" */
1787         buf[1] = high_output; /* value */
1788         buf[2] = high_direction;   /* all outputs (xRST and xRSTnOE) */
1789         LOG_DEBUG("%2.2x %2.2x %2.2x", buf[0], buf[1], buf[2]);
1790
1791         if (((ft2232_write(buf, 3, &bytes_written)) != ERROR_OK) || (bytes_written != 3))
1792         {
1793                 LOG_ERROR("couldn't initialize FT2232 with 'JTAGkey' layout");
1794                 return ERROR_JTAG_INIT_FAILED;
1795         }
1796
1797         return ERROR_OK;
1798 }
1799
1800 int olimex_jtag_init(void)
1801 {
1802         u8 buf[3];
1803         u32 bytes_written;
1804
1805         low_output = 0x08;
1806         low_direction = 0x1b;
1807
1808         /* initialize low byte for jtag */
1809         buf[0] = 0x80; /* command "set data bits low byte" */
1810         buf[1] = low_output; /* value (TMS=1,TCK=0, TDI=0, nOE=0) */
1811         buf[2] = low_direction; /* dir (output=1), TCK/TDI/TMS=out, TDO=in, nOE=out */
1812         LOG_DEBUG("%2.2x %2.2x %2.2x", buf[0], buf[1], buf[2]);
1813
1814         if (((ft2232_write(buf, 3, &bytes_written)) != ERROR_OK) || (bytes_written != 3))
1815         {
1816                 LOG_ERROR("couldn't initialize FT2232 with 'JTAGkey' layout");
1817                 return ERROR_JTAG_INIT_FAILED;
1818         }
1819
1820         nTRST = 0x01;
1821         nTRSTnOE = 0x4;
1822         nSRST = 0x02;
1823         nSRSTnOE = 0x00; /* no output enable for nSRST */
1824
1825         high_output = 0x0;
1826         high_direction = 0x0f;
1827
1828         if (jtag_reset_config & RESET_TRST_OPEN_DRAIN)
1829         {
1830                 high_output |= nTRSTnOE;
1831                 high_output &= ~nTRST;
1832         }
1833         else
1834         {
1835                 high_output &= ~nTRSTnOE;
1836                 high_output |= nTRST;
1837         }
1838
1839         if (jtag_reset_config & RESET_SRST_PUSH_PULL)
1840         {
1841                 LOG_ERROR("can't set nSRST to push-pull on the Olimex ARM-USB-OCD");
1842         }
1843         else
1844         {
1845                 high_output &= ~nSRST;
1846         }
1847
1848         /* turn red LED on */
1849         high_output |= 0x08;
1850
1851         /* initialize high port */
1852         buf[0] = 0x82; /* command "set data bits high byte" */
1853         buf[1] = high_output; /* value */
1854         buf[2] = high_direction;   /* all outputs (xRST and xRSTnOE) */
1855         LOG_DEBUG("%2.2x %2.2x %2.2x", buf[0], buf[1], buf[2]);
1856
1857         if (((ft2232_write(buf, 3, &bytes_written)) != ERROR_OK) || (bytes_written != 3))
1858         {
1859                 LOG_ERROR("couldn't initialize FT2232 with 'JTAGkey' layout");
1860                 return ERROR_JTAG_INIT_FAILED;
1861         }
1862
1863         return ERROR_OK;
1864 }
1865
1866 int flyswatter_init(void)
1867 {
1868         u8 buf[3];
1869         u32 bytes_written;
1870
1871         low_output = 0x18;
1872         low_direction = 0xfb;
1873
1874         /* initialize low byte for jtag */
1875         buf[0] = 0x80; /* command "set data bits low byte" */
1876         buf[1] = low_output; /* value (TMS=1,TCK=0, TDI=0, nOE=0) */
1877         buf[2] = low_direction; /* dir (output=1), TCK/TDI/TMS=out, TDO=in, nOE[12]=out, n[ST]srst=out */
1878         LOG_DEBUG("%2.2x %2.2x %2.2x", buf[0], buf[1], buf[2]);
1879
1880         if (((ft2232_write(buf, 3, &bytes_written)) != ERROR_OK) || (bytes_written != 3))
1881         {
1882                 LOG_ERROR("couldn't initialize FT2232 with 'flyswatter' layout");
1883                 return ERROR_JTAG_INIT_FAILED;
1884         }
1885
1886         nTRST = 0x10;
1887         nTRSTnOE = 0x0; /* not output enable for nTRST */
1888         nSRST = 0x20;
1889         nSRSTnOE = 0x00; /* no output enable for nSRST */
1890
1891         high_output = 0x00;
1892         high_direction = 0x0c;
1893
1894         /* turn red LED1 on, LED2 off */
1895         high_output |= 0x08;
1896
1897         /* initialize high port */
1898         buf[0] = 0x82; /* command "set data bits high byte" */
1899         buf[1] = high_output; /* value */
1900         buf[2] = high_direction;   /* all outputs (xRST and xRSTnOE) */
1901         LOG_DEBUG("%2.2x %2.2x %2.2x", buf[0], buf[1], buf[2]);
1902
1903         if (((ft2232_write(buf, 3, &bytes_written)) != ERROR_OK) || (bytes_written != 3))
1904         {
1905                 LOG_ERROR("couldn't initialize FT2232 with 'flyswatter' layout");
1906                 return ERROR_JTAG_INIT_FAILED;
1907         }
1908
1909         return ERROR_OK;
1910 }
1911
1912 int turtle_init(void)
1913 {
1914         u8 buf[3];
1915         u32 bytes_written;
1916
1917         low_output = 0x08;
1918         low_direction = 0x5b;
1919
1920         /* initialize low byte for jtag */
1921         buf[0] = 0x80; /* command "set data bits low byte" */
1922         buf[1] = low_output; /* value (TMS=1,TCK=0, TDI=0, nOE=0) */
1923         buf[2] = low_direction; /* dir (output=1), TCK/TDI/TMS=out, TDO=in, nOE=out */
1924         LOG_DEBUG("%2.2x %2.2x %2.2x", buf[0], buf[1], buf[2]);
1925
1926         if (((ft2232_write(buf, 3, &bytes_written)) != ERROR_OK) || (bytes_written != 3))
1927         {
1928                 LOG_ERROR("couldn't initialize FT2232 with 'turtelizer2' layout");
1929                 return ERROR_JTAG_INIT_FAILED;
1930         }
1931
1932         nSRST = 0x40;
1933
1934         high_output = 0x00;
1935         high_direction = 0x0C;
1936
1937         /* initialize high port */
1938         buf[0] = 0x82; /* command "set data bits high byte" */
1939         buf[1] = high_output;
1940         buf[2] = high_direction;
1941         LOG_DEBUG("%2.2x %2.2x %2.2x", buf[0], buf[1], buf[2]);
1942
1943         if (((ft2232_write(buf, 3, &bytes_written)) != ERROR_OK) || (bytes_written != 3))
1944         {
1945                 LOG_ERROR("couldn't initialize FT2232 with 'turtelizer2' layout");
1946                 return ERROR_JTAG_INIT_FAILED;
1947         }
1948
1949         return ERROR_OK;
1950 }
1951
1952 int comstick_init(void)
1953 {
1954         u8 buf[3];
1955         u32 bytes_written;
1956
1957         low_output = 0x08;
1958         low_direction = 0x0b;
1959
1960         /* initialize low byte for jtag */
1961         buf[0] = 0x80; /* command "set data bits low byte" */
1962         buf[1] = low_output; /* value (TMS=1,TCK=0, TDI=0, nOE=0) */
1963         buf[2] = low_direction; /* dir (output=1), TCK/TDI/TMS=out, TDO=in, nOE=out */
1964         LOG_DEBUG("%2.2x %2.2x %2.2x", buf[0], buf[1], buf[2]);
1965
1966         if (((ft2232_write(buf, 3, &bytes_written)) != ERROR_OK) || (bytes_written != 3))
1967         {
1968                 LOG_ERROR("couldn't initialize FT2232 with 'comstick' layout");
1969                 return ERROR_JTAG_INIT_FAILED;
1970         }
1971
1972         nTRST = 0x01;
1973         nTRSTnOE = 0x00; /* no output enable for nTRST */
1974         nSRST = 0x02;
1975         nSRSTnOE = 0x00; /* no output enable for nSRST */
1976
1977         high_output = 0x03;
1978         high_direction = 0x03;
1979
1980         /* initialize high port */
1981         buf[0] = 0x82; /* command "set data bits high byte" */
1982         buf[1] = high_output;
1983         buf[2] = high_direction;
1984         LOG_DEBUG("%2.2x %2.2x %2.2x", buf[0], buf[1], buf[2]);
1985
1986         if (((ft2232_write(buf, 3, &bytes_written)) != ERROR_OK) || (bytes_written != 3))
1987         {
1988                 LOG_ERROR("couldn't initialize FT2232 with 'comstick' layout");
1989                 return ERROR_JTAG_INIT_FAILED;
1990         }
1991
1992         return ERROR_OK;
1993 }
1994
1995 int stm32stick_init(void)
1996 {
1997         u8 buf[3];
1998         u32 bytes_written;
1999
2000         low_output = 0x88;
2001         low_direction = 0x8b;
2002
2003         /* initialize low byte for jtag */
2004         buf[0] = 0x80; /* command "set data bits low byte" */
2005         buf[1] = low_output; /* value (TMS=1,TCK=0, TDI=0, nOE=0) */
2006         buf[2] = low_direction; /* dir (output=1), TCK/TDI/TMS=out, TDO=in, nOE=out */
2007         LOG_DEBUG("%2.2x %2.2x %2.2x", buf[0], buf[1], buf[2]);
2008
2009         if (((ft2232_write(buf, 3, &bytes_written)) != ERROR_OK) || (bytes_written != 3))
2010         {
2011                 LOG_ERROR("couldn't initialize FT2232 with 'stm32stick' layout");
2012                 return ERROR_JTAG_INIT_FAILED;
2013         }
2014
2015         nTRST = 0x01;
2016         nTRSTnOE = 0x00; /* no output enable for nTRST */
2017         nSRST = 0x80;
2018         nSRSTnOE = 0x00; /* no output enable for nSRST */
2019
2020         high_output = 0x01;
2021         high_direction = 0x03;
2022
2023         /* initialize high port */
2024         buf[0] = 0x82; /* command "set data bits high byte" */
2025         buf[1] = high_output;
2026         buf[2] = high_direction;
2027         LOG_DEBUG("%2.2x %2.2x %2.2x", buf[0], buf[1], buf[2]);
2028
2029         if (((ft2232_write(buf, 3, &bytes_written)) != ERROR_OK) || (bytes_written != 3))
2030         {
2031                 LOG_ERROR("couldn't initialize FT2232 with 'stm32stick' layout");
2032                 return ERROR_JTAG_INIT_FAILED;
2033         }
2034
2035         return ERROR_OK;
2036 }
2037
2038 void olimex_jtag_blink(void)
2039 {
2040         /* Olimex ARM-USB-OCD has a LED connected to ACBUS3
2041          * ACBUS3 is bit 3 of the GPIOH port
2042          */
2043         if (high_output & 0x08)
2044         {
2045                 /* set port pin high */
2046                 high_output &= 0x07;
2047         }
2048         else
2049         {
2050                 /* set port pin low */
2051                 high_output |= 0x08;
2052         }
2053
2054         BUFFER_ADD = 0x82;
2055         BUFFER_ADD = high_output;
2056         BUFFER_ADD = high_direction;
2057 }
2058
2059 void turtle_jtag_blink(void)
2060 {
2061         /*
2062    * Turtelizer2 has two LEDs connected to ACBUS2 and ACBUS3
2063          */
2064         if (high_output & 0x08)
2065         {
2066                 high_output = 0x04;
2067         }
2068         else
2069         {
2070                 high_output = 0x08;
2071         }
2072
2073         BUFFER_ADD = 0x82;
2074         BUFFER_ADD = high_output;
2075         BUFFER_ADD = high_direction;
2076 }
2077
2078
2079 int ft2232_quit(void)
2080 {
2081 #if BUILD_FT2232_FTD2XX == 1
2082         FT_STATUS status;
2083
2084         status = FT_Close(ftdih);
2085 #elif BUILD_FT2232_LIBFTDI == 1
2086         ftdi_disable_bitbang(&ftdic);
2087
2088         ftdi_usb_close(&ftdic);
2089
2090         ftdi_deinit(&ftdic);
2091 #endif
2092
2093         free(ft2232_buffer);
2094         ft2232_buffer = NULL;
2095
2096         return ERROR_OK;
2097 }
2098
2099 int ft2232_handle_device_desc_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2100 {
2101         if (argc == 1)
2102         {
2103                 ft2232_device_desc = strdup(args[0]);
2104         }
2105         else
2106         {
2107                 LOG_ERROR("expected exactly one argument to ft2232_device_desc <description>");
2108         }
2109
2110         return ERROR_OK;
2111 }
2112
2113 int ft2232_handle_serial_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2114 {
2115         if (argc == 1)
2116         {
2117                 ft2232_serial = strdup(args[0]);
2118         }
2119         else
2120         {
2121                 LOG_ERROR("expected exactly one argument to ft2232_serial <serial-number>");
2122         }
2123
2124         return ERROR_OK;
2125 }
2126
2127 int ft2232_handle_layout_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2128 {
2129         if (argc == 0)
2130                 return ERROR_OK;
2131
2132         ft2232_layout = malloc(strlen(args[0]) + 1);
2133         strcpy(ft2232_layout, args[0]);
2134
2135         return ERROR_OK;
2136 }
2137
2138 int ft2232_handle_vid_pid_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2139 {
2140         int i;
2141
2142         if (argc > MAX_USB_IDS*2) {
2143                 LOG_WARNING("ignoring extra IDs in ft2232_vid_pid "
2144                     "(maximum is %d pairs)", MAX_USB_IDS);
2145                 argc = MAX_USB_IDS*2;
2146         }
2147         if (argc < 2 || (argc & 1))
2148         {
2149                 LOG_WARNING("incomplete ft2232_vid_pid configuration directive");
2150                 if (argc < 2)
2151                         return ERROR_OK;
2152         }
2153
2154         for (i = 0; i+1 < argc; i += 2) {
2155                 ft2232_vid[i >> 1] = strtol(args[i], NULL, 0);
2156                 ft2232_pid[i >> 1] = strtol(args[i+1], NULL, 0);
2157         }
2158         /*
2159          * Explicitly terminate, in case there are multiples instances of
2160          * ft2232_vid_pid.
2161          */
2162         ft2232_vid[i >> 1] = ft2232_pid[i >> 1] = 0;
2163
2164         return ERROR_OK;
2165 }
2166
2167 int ft2232_handle_latency_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2168 {
2169         if (argc == 1)
2170         {
2171                 ft2232_latency = atoi(args[0]);
2172         }
2173         else
2174         {
2175                 LOG_ERROR("expected exactly one argument to ft2232_latency <ms>");
2176         }
2177
2178         return ERROR_OK;
2179 }
2180
2181