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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   /* Use 65000 for better rounding */
 292   *jtag_speed = (60000 / khz) - 10;
 293
 294   /* Add 0.9 for rounding */
 295   *jtag_speed += 9;
 296
 297   /* Calc real speed */
 298   *jtag_speed = *jtag_speed / 10;
 299
 300   /* Check if speed is greater than 0 */
 301   if (*jtag_speed < 0)
 302   {
 303     *jtag_speed = 0;
 304   }
 305
 306         return ERROR_OK;
 307 }
 308
 309
 310
 311 int ft2232_register_commands(struct command_context_s *cmd_ctx)
 312 {
 313         register_command(cmd_ctx, NULL, "ft2232_device_desc", ft2232_handle_device_desc_command,
 314                 COMMAND_CONFIG, NULL);
 315         register_command(cmd_ctx, NULL, "ft2232_serial", ft2232_handle_serial_command,
 316                 COMMAND_CONFIG, NULL);
 317         register_command(cmd_ctx, NULL, "ft2232_layout", ft2232_handle_layout_command,
 318                 COMMAND_CONFIG, NULL);
 319         register_command(cmd_ctx, NULL, "ft2232_vid_pid", ft2232_handle_vid_pid_command,
 320                                          COMMAND_CONFIG, NULL);
 321         register_command(cmd_ctx, NULL, "ft2232_latency", ft2232_handle_latency_command,
 322                                          COMMAND_CONFIG, NULL);
 323         return ERROR_OK;
 324 }
 325
 326 void ft2232_end_state(enum tap_state state)
 327 {
 328         if (tap_move_map[state] != -1)
 329                 end_state = state;
 330         else
 331         {
 332                 LOG_ERROR("BUG: %i is not a valid end state", state);
 333                 exit(-1);
 334         }
 335 }
 336
 337 void ft2232_read_scan(enum scan_type type, u8* buffer, int scan_size)
 338 {
 339         int num_bytes = ((scan_size + 7) / 8);
 340         int bits_left = scan_size;
 341         int cur_byte = 0;
 342
 343         while(num_bytes-- > 1)
 344         {
 345                 buffer[cur_byte] = BUFFER_READ;
 346                 cur_byte++;
 347                 bits_left -= 8;
 348         }
 349
 350         buffer[cur_byte] = 0x0;
 351
 352         if (bits_left > 1)
 353         {
 354                 buffer[cur_byte] = BUFFER_READ >> 1;
 355         }
 356
 357         buffer[cur_byte] = (buffer[cur_byte] | ((BUFFER_READ & 0x02) << 6)) >> (8 - bits_left);
 358
 359 }
 360
 361 void ft2232_debug_dump_buffer(void)
 362 {
 363         int i;
 364         char line[256];
 365         char *line_p = line;
 366
 367         for (i = 0; i < ft2232_buffer_size; i++)
 368         {
 369                 line_p += snprintf(line_p, 256 - (line_p - line), "%2.2x ", ft2232_buffer[i]);
 370                 if (i % 16 == 15)
 371                 {
 372                         LOG_DEBUG("%s", line);
 373                         line_p = line;
 374                 }
 375         }
 376
 377         if (line_p != line)
 378                 LOG_DEBUG("%s", line);
 379 }
 380
 381 int ft2232_send_and_recv(jtag_command_t *first, jtag_command_t *last)
 382 {
 383         jtag_command_t *cmd;
 384         u8 *buffer;
 385         int scan_size;
 386         enum scan_type type;
 387         int retval;
 388         u32 bytes_written;
 389         u32 bytes_read;
 390
 391 #ifdef _DEBUG_USB_IO_
 392         struct timeval start, inter, inter2, end;
 393         struct timeval d_inter, d_inter2, d_end;
 394 #endif
 395
 396 #ifdef _DEBUG_USB_COMMS_
 397         LOG_DEBUG("write buffer (size %i):", ft2232_buffer_size);
 398         ft2232_debug_dump_buffer();
 399 #endif
 400
 401 #ifdef _DEBUG_USB_IO_
 402         gettimeofday(&start, NULL);
 403 #endif
 404
 405         if ((retval = ft2232_write(ft2232_buffer, ft2232_buffer_size, &bytes_written)) != ERROR_OK)
 406         {
 407                 LOG_ERROR("couldn't write MPSSE commands to FT2232");
 408                 exit(-1);
 409         }
 410
 411 #ifdef _DEBUG_USB_IO_
 412         gettimeofday(&inter, NULL);
 413 #endif
 414
 415         if (ft2232_expect_read)
 416         {
 417                 int timeout = 100;
 418                 ft2232_buffer_size = 0;
 419
 420 #ifdef _DEBUG_USB_IO_
 421                 gettimeofday(&inter2, NULL);
 422 #endif
 423
 424                 if ((retval = ft2232_read(ft2232_buffer, ft2232_expect_read, &bytes_read)) != ERROR_OK)
 425                 {
 426                         LOG_ERROR("couldn't read from FT2232");
 427                         exit(-1);
 428                 }
 429
 430 #ifdef _DEBUG_USB_IO_
 431                 gettimeofday(&end, NULL);
 432
 433                 timeval_subtract(&d_inter, &inter, &start);
 434                 timeval_subtract(&d_inter2, &inter2, &start);
 435                 timeval_subtract(&d_end, &end, &start);
 436
 437                 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);
 438 #endif
 439
 440
 441                 ft2232_buffer_size = bytes_read;
 442
 443                 if (ft2232_expect_read != ft2232_buffer_size)
 444                 {
 445                         LOG_ERROR("ft2232_expect_read (%i) != ft2232_buffer_size (%i) (%i retries)", ft2232_expect_read, ft2232_buffer_size, 100 - timeout);
 446                         ft2232_debug_dump_buffer();
 447
 448                         exit(-1);
 449                 }
 450
 451 #ifdef _DEBUG_USB_COMMS_
 452                 LOG_DEBUG("read buffer (%i retries): %i bytes", 100 - timeout, ft2232_buffer_size);
 453                 ft2232_debug_dump_buffer();
 454 #endif
 455         }
 456
 457         ft2232_expect_read = 0;
 458         ft2232_read_pointer = 0;
 459
 460         /* return ERROR_OK, unless a jtag_read_buffer returns a failed check
 461          * that wasn't handled by a caller-provided error handler
 462          */
 463         retval = ERROR_OK;
 464
 465         cmd = first;
 466         while (cmd != last)
 467         {
 468                 switch (cmd->type)
 469                 {
 470                         case JTAG_SCAN:
 471                                 type = jtag_scan_type(cmd->cmd.scan);
 472                                 if (type != SCAN_OUT)
 473                                 {
 474                                         scan_size = jtag_scan_size(cmd->cmd.scan);
 475                                         buffer = calloc(CEIL(scan_size, 8), 1);
 476                                         ft2232_read_scan(type, buffer, scan_size);
 477                                         if (jtag_read_buffer(buffer, cmd->cmd.scan) != ERROR_OK)
 478                                                 retval = ERROR_JTAG_QUEUE_FAILED;
 479                                         free(buffer);
 480                                 }
 481                                 break;
 482                         default:
 483                                 break;
 484                 }
 485                 cmd = cmd->next;
 486         }
 487
 488         ft2232_buffer_size = 0;
 489
 490         return retval;
 491 }
 492
 493 void ft2232_add_pathmove(pathmove_command_t *cmd)
 494 {
 495         int num_states = cmd->num_states;
 496         u8 tms_byte;
 497         int state_count;
 498
 499         state_count = 0;
 500         while (num_states)
 501         {
 502                 int bit_count = 0;
 503
 504                 int num_states_batch = num_states > 7 ? 7 : num_states;
 505
 506                 tms_byte = 0x0;
 507                 /* command "Clock Data to TMS/CS Pin (no Read)" */
 508                 BUFFER_ADD = 0x4b;
 509                 /* number of states remaining */
 510                 BUFFER_ADD = num_states_batch - 1;
 511
 512                 while (num_states_batch--)
 513                 {
 514                         if (tap_transitions[cur_state].low == cmd->path[state_count])
 515                                 buf_set_u32(&tms_byte, bit_count++, 1, 0x0);
 516                         else if (tap_transitions[cur_state].high == cmd->path[state_count])
 517                                 buf_set_u32(&tms_byte, bit_count++, 1, 0x1);
 518                         else
 519                         {
 520                                 LOG_ERROR("BUG: %s -> %s isn't a valid TAP transition", tap_state_strings[cur_state], tap_state_strings[cmd->path[state_count]]);
 521                                 exit(-1);
 522                         }
 523
 524                         cur_state = cmd->path[state_count];
 525                         state_count++;
 526                         num_states--;
 527                 }
 528
 529                 BUFFER_ADD = tms_byte;
 530         }
 531
 532         end_state = cur_state;
 533 }
 534
 535 void ft2232_add_scan(int ir_scan, enum scan_type type, u8 *buffer, int scan_size)
 536 {
 537         int num_bytes = (scan_size + 7) / 8;
 538         int bits_left = scan_size;
 539         int cur_byte = 0;
 540         int last_bit;
 541
 542         if (!((!ir_scan && (cur_state == TAP_SD)) || (ir_scan && (cur_state == TAP_SI))))
 543         {
 544                 /* command "Clock Data to TMS/CS Pin (no Read)" */
 545                 BUFFER_ADD = 0x4b;
 546                 /* scan 7 bit */
 547                 BUFFER_ADD = 0x6;
 548                 /* TMS data bits */
 549                 if (ir_scan)
 550                 {
 551                         BUFFER_ADD = TAP_MOVE(cur_state, TAP_SI);
 552                         cur_state = TAP_SI;
 553                 }
 554                 else
 555                 {
 556                         BUFFER_ADD = TAP_MOVE(cur_state, TAP_SD);
 557                         cur_state = TAP_SD;
 558                 }
 559                 /* LOG_DEBUG("added TMS scan (no read)"); */
 560         }
 561
 562         /* add command for complete bytes */
 563         while (num_bytes > 1)
 564         {
 565                 int thisrun_bytes;
 566                 if (type == SCAN_IO)
 567                 {
 568                         /* Clock Data Bytes In and Out LSB First */
 569                         BUFFER_ADD = 0x39;
 570                         /* LOG_DEBUG("added TDI bytes (io %i)", num_bytes); */
 571                 }
 572                 else if (type == SCAN_OUT)
 573                 {
 574                         /* Clock Data Bytes Out on -ve Clock Edge LSB First (no Read) */
 575                         BUFFER_ADD = 0x19;
 576                         /* LOG_DEBUG("added TDI bytes (o)"); */
 577                 }
 578                 else if (type == SCAN_IN)
 579                 {
 580                         /* Clock Data Bytes In on +ve Clock Edge LSB First (no Write) */
 581                         BUFFER_ADD = 0x28;
 582                         /* LOG_DEBUG("added TDI bytes (i %i)", num_bytes); */
 583                 }
 584                 thisrun_bytes = (num_bytes > 65537) ? 65536 : (num_bytes - 1);
 585                 num_bytes -= thisrun_bytes;
 586                 BUFFER_ADD = (thisrun_bytes - 1) & 0xff;
 587                 BUFFER_ADD = ((thisrun_bytes - 1) >> 8) & 0xff;
 588                 if (type != SCAN_IN)
 589                 {
 590                         /* add complete bytes */
 591                         while(thisrun_bytes-- > 0)
 592                         {
 593                                 BUFFER_ADD = buffer[cur_byte];
 594                                 cur_byte++;
 595                                 bits_left -= 8;
 596                         }
 597                 }
 598                 else /* (type == SCAN_IN) */
 599                 {
 600                         bits_left -= 8 * (thisrun_bytes);
 601                 }
 602         }
 603
 604         /* the most signifcant bit is scanned during TAP movement */
 605         if (type != SCAN_IN)
 606                 last_bit = (buffer[cur_byte] >> (bits_left - 1)) & 0x1;
 607         else
 608                 last_bit = 0;
 609
 610         /* process remaining bits but the last one */
 611         if (bits_left > 1)
 612         {
 613                 if (type == SCAN_IO)
 614                 {
 615                         /* Clock Data Bits In and Out LSB First */
 616                         BUFFER_ADD = 0x3b;
 617                         /* LOG_DEBUG("added TDI bits (io) %i", bits_left - 1); */
 618                 }
 619                 else if (type == SCAN_OUT)
 620                 {
 621                         /* Clock Data Bits Out on -ve Clock Edge LSB First (no Read) */
 622                         BUFFER_ADD = 0x1b;
 623                         /* LOG_DEBUG("added TDI bits (o)"); */
 624                 }
 625                 else if (type == SCAN_IN)
 626                 {
 627                         /* Clock Data Bits In on +ve Clock Edge LSB First (no Write) */
 628                         BUFFER_ADD = 0x2a;
 629                         /* LOG_DEBUG("added TDI bits (i %i)", bits_left - 1); */
 630                 }
 631                 BUFFER_ADD = bits_left - 2;
 632                 if (type != SCAN_IN)
 633                         BUFFER_ADD = buffer[cur_byte];
 634         }
 635
 636         if ((ir_scan && (end_state == TAP_SI)) ||
 637                 (!ir_scan && (end_state == TAP_SD)))
 638         {
 639                 if (type == SCAN_IO)
 640                 {
 641                         /* Clock Data Bits In and Out LSB First */
 642                         BUFFER_ADD = 0x3b;
 643                         /* LOG_DEBUG("added TDI bits (io) %i", bits_left - 1); */
 644                 }
 645                 else if (type == SCAN_OUT)
 646                 {
 647                         /* Clock Data Bits Out on -ve Clock Edge LSB First (no Read) */
 648                         BUFFER_ADD = 0x1b;
 649                         /* LOG_DEBUG("added TDI bits (o)"); */
 650                 }
 651                 else if (type == SCAN_IN)
 652                 {
 653                         /* Clock Data Bits In on +ve Clock Edge LSB First (no Write) */
 654                         BUFFER_ADD = 0x2a;
 655                         /* LOG_DEBUG("added TDI bits (i %i)", bits_left - 1); */
 656                 }
 657                 BUFFER_ADD = 0x0;
 658                 BUFFER_ADD = last_bit;
 659         }
 660         else
 661         {
 662                 /* move from Shift-IR/DR to end state */
 663                 if (type != SCAN_OUT)
 664                 {
 665                         /* Clock Data to TMS/CS Pin with Read */
 666                         BUFFER_ADD = 0x6b;
 667                         /* LOG_DEBUG("added TMS scan (read)"); */
 668                 }
 669                 else
 670                 {
 671                         /* Clock Data to TMS/CS Pin (no Read) */
 672                         BUFFER_ADD = 0x4b;
 673                         /* LOG_DEBUG("added TMS scan (no read)"); */
 674                 }
 675                 BUFFER_ADD = 0x6;
 676                 BUFFER_ADD = TAP_MOVE(cur_state, end_state) | (last_bit << 7);
 677                 cur_state = end_state;
 678         }
 679 }
 680
 681 int ft2232_large_scan(scan_command_t *cmd, enum scan_type type, u8 *buffer, int scan_size)
 682 {
 683         int num_bytes = (scan_size + 7) / 8;
 684         int bits_left = scan_size;
 685         int cur_byte = 0;
 686         int last_bit;
 687         u8 *receive_buffer = malloc(CEIL(scan_size, 8));
 688         u8 *receive_pointer = receive_buffer;
 689         u32 bytes_written;
 690         u32 bytes_read;
 691         int retval;
 692         int thisrun_read = 0;
 693
 694         if (cmd->ir_scan)
 695         {
 696                 LOG_ERROR("BUG: large IR scans are not supported");
 697                 exit(-1);
 698         }
 699
 700         if (cur_state != TAP_SD)
 701         {
 702                 /* command "Clock Data to TMS/CS Pin (no Read)" */
 703                 BUFFER_ADD = 0x4b;
 704                 /* scan 7 bit */
 705                 BUFFER_ADD = 0x6;
 706                 /* TMS data bits */
 707                 BUFFER_ADD = TAP_MOVE(cur_state, TAP_SD);
 708                 cur_state = TAP_SD;
 709         }
 710
 711         if ((retval = ft2232_write(ft2232_buffer, ft2232_buffer_size, &bytes_written)) != ERROR_OK)
 712         {
 713                 LOG_ERROR("couldn't write MPSSE commands to FT2232");
 714                 exit(-1);
 715         }
 716         LOG_DEBUG("ft2232_buffer_size: %i, bytes_written: %i", ft2232_buffer_size, bytes_written);
 717         ft2232_buffer_size = 0;
 718
 719         /* add command for complete bytes */
 720         while (num_bytes > 1)
 721         {
 722                 int thisrun_bytes;
 723
 724                 if (type == SCAN_IO)
 725                 {
 726                         /* Clock Data Bytes In and Out LSB First */
 727                         BUFFER_ADD = 0x39;
 728                         /* LOG_DEBUG("added TDI bytes (io %i)", num_bytes); */
 729                 }
 730                 else if (type == SCAN_OUT)
 731                 {
 732                         /* Clock Data Bytes Out on -ve Clock Edge LSB First (no Read) */
 733                         BUFFER_ADD = 0x19;
 734                         /* LOG_DEBUG("added TDI bytes (o)"); */
 735                 }
 736                 else if (type == SCAN_IN)
 737                 {
 738                         /* Clock Data Bytes In on +ve Clock Edge LSB First (no Write) */
 739                         BUFFER_ADD = 0x28;
 740                         /* LOG_DEBUG("added TDI bytes (i %i)", num_bytes); */
 741                 }
 742                 thisrun_bytes = (num_bytes > 65537) ? 65536 : (num_bytes - 1);
 743                 thisrun_read = thisrun_bytes;
 744                 num_bytes -= thisrun_bytes;
 745                 BUFFER_ADD = (thisrun_bytes - 1) & 0xff;
 746                 BUFFER_ADD = ((thisrun_bytes - 1) >> 8) & 0xff;
 747                 if (type != SCAN_IN)
 748                 {
 749                         /* add complete bytes */
 750                         while(thisrun_bytes-- > 0)
 751                         {
 752                                 BUFFER_ADD = buffer[cur_byte];
 753                                 cur_byte++;
 754                                 bits_left -= 8;
 755                         }
 756                 }
 757                 else /* (type == SCAN_IN) */
 758                 {
 759                         bits_left -= 8 * (thisrun_bytes);
 760                 }
 761
 762                 if ((retval = ft2232_write(ft2232_buffer, ft2232_buffer_size, &bytes_written)) != ERROR_OK)
 763                 {
 764                         LOG_ERROR("couldn't write MPSSE commands to FT2232");
 765                         exit(-1);
 766                 }
 767                 LOG_DEBUG("ft2232_buffer_size: %i, bytes_written: %i", ft2232_buffer_size, bytes_written);
 768                 ft2232_buffer_size = 0;
 769
 770                 if (type != SCAN_OUT)
 771                 {
 772                         if ((retval = ft2232_read(receive_pointer, thisrun_read, &bytes_read)) != ERROR_OK)
 773                         {
 774                                 LOG_ERROR("couldn't read from FT2232");
 775                                 exit(-1);
 776                         }
 777                         LOG_DEBUG("thisrun_read: %i, bytes_read: %i", thisrun_read, bytes_read);
 778                         receive_pointer += bytes_read;
 779                 }
 780         }
 781
 782         thisrun_read = 0;
 783
 784         /* the most signifcant bit is scanned during TAP movement */
 785         if (type != SCAN_IN)
 786                 last_bit = (buffer[cur_byte] >> (bits_left - 1)) & 0x1;
 787         else
 788                 last_bit = 0;
 789
 790         /* process remaining bits but the last one */
 791         if (bits_left > 1)
 792         {
 793                 if (type == SCAN_IO)
 794                 {
 795                         /* Clock Data Bits In and Out LSB First */
 796                         BUFFER_ADD = 0x3b;
 797                         /* LOG_DEBUG("added TDI bits (io) %i", bits_left - 1); */
 798                 }
 799                 else if (type == SCAN_OUT)
 800                 {
 801                         /* Clock Data Bits Out on -ve Clock Edge LSB First (no Read) */
 802                         BUFFER_ADD = 0x1b;
 803                         /* LOG_DEBUG("added TDI bits (o)"); */
 804                 }
 805                 else if (type == SCAN_IN)
 806                 {
 807                         /* Clock Data Bits In on +ve Clock Edge LSB First (no Write) */
 808                         BUFFER_ADD = 0x2a;
 809                         /* LOG_DEBUG("added TDI bits (i %i)", bits_left - 1); */
 810                 }
 811                 BUFFER_ADD = bits_left - 2;
 812                 if (type != SCAN_IN)
 813                         BUFFER_ADD = buffer[cur_byte];
 814
 815                 if (type != SCAN_OUT)
 816                         thisrun_read += 2;
 817         }
 818
 819         if (end_state == TAP_SD)
 820         {
 821                 if (type == SCAN_IO)
 822                 {
 823                         /* Clock Data Bits In and Out LSB First */
 824                         BUFFER_ADD = 0x3b;
 825                         /* LOG_DEBUG("added TDI bits (io) %i", bits_left - 1); */
 826                 }
 827                 else if (type == SCAN_OUT)
 828                 {
 829                         /* Clock Data Bits Out on -ve Clock Edge LSB First (no Read) */
 830                         BUFFER_ADD = 0x1b;
 831                         /* LOG_DEBUG("added TDI bits (o)"); */
 832                 }
 833                 else if (type == SCAN_IN)
 834                 {
 835                         /* Clock Data Bits In on +ve Clock Edge LSB First (no Write) */
 836                         BUFFER_ADD = 0x2a;
 837                         /* LOG_DEBUG("added TDI bits (i %i)", bits_left - 1); */
 838                 }
 839                 BUFFER_ADD = 0x0;
 840                 BUFFER_ADD = last_bit;
 841         }
 842         else
 843         {
 844                 /* move from Shift-IR/DR to end state */
 845                 if (type != SCAN_OUT)
 846                 {
 847                         /* Clock Data to TMS/CS Pin with Read */
 848                         BUFFER_ADD = 0x6b;
 849                         /* LOG_DEBUG("added TMS scan (read)"); */
 850                 }
 851                 else
 852                 {
 853                         /* Clock Data to TMS/CS Pin (no Read) */
 854                         BUFFER_ADD = 0x4b;
 855                         /* LOG_DEBUG("added TMS scan (no read)"); */
 856                 }
 857                 BUFFER_ADD = 0x6;
 858                 BUFFER_ADD = TAP_MOVE(cur_state, end_state) | (last_bit << 7);
 859                 cur_state = end_state;
 860         }
 861
 862         if (type != SCAN_OUT)
 863                 thisrun_read += 1;
 864
 865         if ((retval = ft2232_write(ft2232_buffer, ft2232_buffer_size, &bytes_written)) != ERROR_OK)
 866         {
 867                 LOG_ERROR("couldn't write MPSSE commands to FT2232");
 868                 exit(-1);
 869         }
 870         LOG_DEBUG("ft2232_buffer_size: %i, bytes_written: %i", ft2232_buffer_size, bytes_written);
 871         ft2232_buffer_size = 0;
 872
 873         if (type != SCAN_OUT)
 874         {
 875                 if ((retval = ft2232_read(receive_pointer, thisrun_read, &bytes_read)) != ERROR_OK)
 876                 {
 877                         LOG_ERROR("couldn't read from FT2232");
 878                         exit(-1);
 879                 }
 880                 LOG_DEBUG("thisrun_read: %i, bytes_read: %i", thisrun_read, bytes_read);
 881                 receive_pointer += bytes_read;
 882         }
 883
 884         return ERROR_OK;
 885 }
 886
 887 int ft2232_predict_scan_out(int scan_size, enum scan_type type)
 888 {
 889         int predicted_size = 3;
 890         int num_bytes = (scan_size - 1) / 8;
 891
 892         if (cur_state != TAP_SD)
 893                 predicted_size += 3;
 894
 895         if (type == SCAN_IN)    /* only from device to host */
 896         {
 897                 /* complete bytes */
 898                 predicted_size += (CEIL(num_bytes, 65536)) * 3;
 899                 /* remaining bits - 1 (up to 7) */
 900                 predicted_size += ((scan_size - 1) % 8) ? 2 : 0;
 901         }
 902         else                                    /* host to device, or bidirectional */
 903         {
 904                 /* complete bytes */
 905                 predicted_size += num_bytes + (CEIL(num_bytes, 65536)) * 3;
 906                 /* remaining bits -1 (up to 7) */
 907                 predicted_size += ((scan_size - 1) % 8) ? 3 : 0;
 908         }
 909
 910         return predicted_size;
 911 }
 912
 913 int ft2232_predict_scan_in(int scan_size, enum scan_type type)
 914 {
 915         int predicted_size = 0;
 916
 917         if (type != SCAN_OUT)
 918         {
 919                 /* complete bytes */
 920                 predicted_size += (CEIL(scan_size, 8) > 1) ? (CEIL(scan_size, 8) - 1) : 0;
 921                 /* remaining bits - 1 */
 922                 predicted_size += ((scan_size - 1) % 8) ? 1 : 0;
 923                 /* last bit (from TMS scan) */
 924                 predicted_size += 1;
 925         }
 926
 927         /* LOG_DEBUG("scan_size: %i, predicted_size: %i", scan_size, predicted_size); */
 928
 929         return predicted_size;
 930 }
 931
 932 void usbjtag_reset(int trst, int srst)
 933 {
 934         if (trst == 1)
 935         {
 936                 if (jtag_reset_config & RESET_TRST_OPEN_DRAIN)
 937                         low_direction |= nTRSTnOE;      /* switch to output pin (output is low) */
 938                 else
 939                         low_output &= ~nTRST;   /* switch output low */
 940         }
 941         else if (trst == 0)
 942         {
 943                 if (jtag_reset_config & RESET_TRST_OPEN_DRAIN)
 944                         low_direction &= ~nTRSTnOE; /* switch to input pin (high-Z + internal and external pullup) */
 945                 else
 946                         low_output |= nTRST; /* switch output high */
 947         }
 948
 949         if (srst == 1)
 950         {
 951                 if (jtag_reset_config & RESET_SRST_PUSH_PULL)
 952                         low_output &= ~nSRST;   /* switch output low */
 953                 else
 954                         low_direction |= nSRSTnOE;      /* switch to output pin (output is low) */
 955         }
 956         else if (srst == 0)
 957         {
 958                 if (jtag_reset_config & RESET_SRST_PUSH_PULL)
 959                         low_output |= nSRST;    /* switch output high */
 960                 else
 961                         low_direction &= ~nSRSTnOE;     /* switch to input pin (high-Z) */
 962         }
 963
 964         /* command "set data bits low byte" */
 965         BUFFER_ADD = 0x80;
 966         BUFFER_ADD = low_output;
 967         BUFFER_ADD = low_direction;
 968
 969 }
 970
 971 void jtagkey_reset(int trst, int srst)
 972 {
 973         if (trst == 1)
 974         {
 975                 if (jtag_reset_config & RESET_TRST_OPEN_DRAIN)
 976                         high_output &= ~nTRSTnOE;
 977                 else
 978                         high_output &= ~nTRST;
 979         }
 980         else if (trst == 0)
 981         {
 982                 if (jtag_reset_config & RESET_TRST_OPEN_DRAIN)
 983                         high_output |= nTRSTnOE;
 984                 else
 985                         high_output |= nTRST;
 986         }
 987
 988         if (srst == 1)
 989         {
 990                 if (jtag_reset_config & RESET_SRST_PUSH_PULL)
 991                         high_output &= ~nSRST;
 992                 else
 993                         high_output &= ~nSRSTnOE;
 994         }
 995         else if (srst == 0)
 996         {
 997                 if (jtag_reset_config & RESET_SRST_PUSH_PULL)
 998                         high_output |= nSRST;
 999                 else
1000                         high_output |= nSRSTnOE;
1001         }
1002
1003         /* command "set data bits high byte" */
1004         BUFFER_ADD = 0x82;
1005         BUFFER_ADD = high_output;
1006         BUFFER_ADD = high_direction;
1007         LOG_DEBUG("trst: %i, srst: %i, high_output: 0x%2.2x, high_direction: 0x%2.2x", trst, srst, high_output, high_direction);
1008 }
1009
1010 void olimex_jtag_reset(int trst, int srst)
1011 {
1012         if (trst == 1)
1013         {
1014                 if (jtag_reset_config & RESET_TRST_OPEN_DRAIN)
1015                         high_output &= ~nTRSTnOE;
1016                 else
1017                         high_output &= ~nTRST;
1018         }
1019         else if (trst == 0)
1020         {
1021                 if (jtag_reset_config & RESET_TRST_OPEN_DRAIN)
1022                         high_output |= nTRSTnOE;
1023                 else
1024                         high_output |= nTRST;
1025         }
1026
1027     if (srst == 1)
1028     {
1029         high_output |= nSRST;
1030     }
1031     else if (srst == 0)
1032     {
1033         high_output &= ~nSRST;
1034     }
1035
1036     /* command "set data bits high byte" */
1037     BUFFER_ADD = 0x82;
1038     BUFFER_ADD = high_output;
1039     BUFFER_ADD = high_direction;
1040     LOG_DEBUG("trst: %i, srst: %i, high_output: 0x%2.2x, high_direction: 0x%2.2x", trst, srst, high_output, high_direction);
1041 }
1042
1043 void flyswatter_reset(int trst, int srst)
1044 {
1045         if (trst == 1)
1046         {
1047                 low_output &= ~nTRST;
1048         }
1049         else if (trst == 0)
1050         {
1051                 low_output |= nTRST;
1052         }
1053
1054     if (srst == 1)
1055     {
1056         low_output |= nSRST;
1057     }
1058     else if (srst == 0)
1059     {
1060         low_output &= ~nSRST;
1061     }
1062
1063     /* command "set data bits low byte" */
1064     BUFFER_ADD = 0x80;
1065     BUFFER_ADD = low_output;
1066     BUFFER_ADD = low_direction;
1067     LOG_DEBUG("trst: %i, srst: %i, low_output: 0x%2.2x, low_direction: 0x%2.2x", trst, srst, low_output, low_direction);
1068 }
1069
1070 void turtle_reset(int trst, int srst)
1071 {
1072         trst = trst;
1073
1074         if (srst == 1)
1075         {
1076                 low_output |= nSRST;
1077         }
1078         else if (srst == 0)
1079         {
1080                 low_output &= ~nSRST;
1081         }
1082
1083         /* command "set data bits low byte" */
1084         BUFFER_ADD = 0x80;
1085         BUFFER_ADD = low_output;
1086         BUFFER_ADD = low_direction;
1087         LOG_DEBUG("srst: %i, low_output: 0x%2.2x, low_direction: 0x%2.2x", srst, low_output, low_direction);
1088 }
1089
1090 void comstick_reset(int trst, int srst)
1091 {
1092         if (trst == 1)
1093         {
1094                 high_output &= ~nTRST;
1095         }
1096         else if (trst == 0)
1097         {
1098                 high_output |= nTRST;
1099         }
1100
1101     if (srst == 1)
1102     {
1103         high_output &= ~nSRST;
1104     }
1105     else if (srst == 0)
1106     {
1107         high_output |= nSRST;
1108     }
1109
1110         /* command "set data bits high byte" */
1111         BUFFER_ADD = 0x82;
1112         BUFFER_ADD = high_output;
1113         BUFFER_ADD = high_direction;
1114         LOG_DEBUG("trst: %i, srst: %i, high_output: 0x%2.2x, high_direction: 0x%2.2x", trst, srst, high_output, high_direction);
1115 }
1116
1117 void stm32stick_reset(int trst, int srst)
1118 {
1119         if (trst == 1)
1120         {
1121                 high_output &= ~nTRST;
1122         }
1123         else if (trst == 0)
1124         {
1125                 high_output |= nTRST;
1126         }
1127
1128     if (srst == 1)
1129     {
1130         low_output &= ~nSRST;
1131     }
1132     else if (srst == 0)
1133     {
1134         low_output |= nSRST;
1135     }
1136
1137         /* command "set data bits low byte" */
1138         BUFFER_ADD = 0x80;
1139         BUFFER_ADD = low_output;
1140         BUFFER_ADD = low_direction;
1141
1142         /* command "set data bits high byte" */
1143         BUFFER_ADD = 0x82;
1144         BUFFER_ADD = high_output;
1145         BUFFER_ADD = high_direction;
1146         LOG_DEBUG("trst: %i, srst: %i, high_output: 0x%2.2x, high_direction: 0x%2.2x", trst, srst, high_output, high_direction);
1147 }
1148
1149 int ft2232_execute_queue()
1150 {
1151         jtag_command_t *cmd = jtag_command_queue; /* currently processed command */
1152         jtag_command_t *first_unsent = cmd;     /* next command that has to be sent */
1153         u8 *buffer;
1154         int scan_size;  /* size of IR or DR scan */
1155         enum scan_type type;
1156         int i;
1157         int predicted_size = 0;
1158         int require_send = 0;
1159         int retval;
1160
1161         /* return ERROR_OK, unless ft2232_send_and_recv reports a failed check
1162          * that wasn't handled by a caller-provided error handler
1163          */
1164         retval = ERROR_OK;
1165
1166         ft2232_buffer_size = 0;
1167         ft2232_expect_read = 0;
1168
1169         /* blink, if the current layout has that feature */
1170         if (layout->blink)
1171                 layout->blink();
1172
1173         while (cmd)
1174         {
1175                 switch(cmd->type)
1176                 {
1177                         case JTAG_END_STATE:
1178                                 if (cmd->cmd.end_state->end_state != -1)
1179                                         ft2232_end_state(cmd->cmd.end_state->end_state);
1180                                 break;
1181                         case JTAG_RESET:
1182                                 /* only send the maximum buffer size that FT2232C can handle */
1183                                 predicted_size = 3;
1184                                 if (ft2232_buffer_size + predicted_size + 1 > FT2232_BUFFER_SIZE)
1185                                 {
1186                                         if (ft2232_send_and_recv(first_unsent, cmd) != ERROR_OK)
1187                                                 retval = ERROR_JTAG_QUEUE_FAILED;
1188                                         require_send = 0;
1189                                         first_unsent = cmd;
1190                                 }
1191
1192                                 if ((cmd->cmd.reset->trst == 1) || (cmd->cmd.reset->srst && (jtag_reset_config & RESET_SRST_PULLS_TRST)))
1193                                 {
1194                                         cur_state = TAP_TLR;
1195                                 }
1196                                 layout->reset(cmd->cmd.reset->trst, cmd->cmd.reset->srst);
1197                                 require_send = 1;
1198
1199 #ifdef _DEBUG_JTAG_IO_
1200                                 LOG_DEBUG("trst: %i, srst: %i", cmd->cmd.reset->trst, cmd->cmd.reset->srst);
1201 #endif
1202                                 break;
1203                         case JTAG_RUNTEST:
1204                                 /* only send the maximum buffer size that FT2232C can handle */
1205                                 predicted_size = 0;
1206                                 if (cur_state != TAP_RTI)
1207                                         predicted_size += 3;
1208                                 predicted_size += 3 * CEIL(cmd->cmd.runtest->num_cycles, 7);
1209                                 if ((cmd->cmd.runtest->end_state != -1) && (cmd->cmd.runtest->end_state != TAP_RTI))
1210                                         predicted_size += 3;
1211                                 if ((cmd->cmd.runtest->end_state == -1) && (end_state != TAP_RTI))
1212                                         predicted_size += 3;
1213                                 if (ft2232_buffer_size + predicted_size + 1 > FT2232_BUFFER_SIZE)
1214                                 {
1215                                         if (ft2232_send_and_recv(first_unsent, cmd) != ERROR_OK)
1216                                                 retval = ERROR_JTAG_QUEUE_FAILED;
1217                                         require_send = 0;
1218                                         first_unsent = cmd;
1219                                 }
1220                                 if (cur_state != TAP_RTI)
1221                                 {
1222                                         /* command "Clock Data to TMS/CS Pin (no Read)" */
1223                                         BUFFER_ADD = 0x4b;
1224                                         /* scan 7 bit */
1225                                         BUFFER_ADD = 0x6;
1226                                         /* TMS data bits */
1227                                         BUFFER_ADD = TAP_MOVE(cur_state, TAP_RTI);
1228                                         cur_state = TAP_RTI;
1229                                         require_send = 1;
1230                                 }
1231                                 i = cmd->cmd.runtest->num_cycles;
1232                                 while (i > 0)
1233                                 {
1234                                         /* command "Clock Data to TMS/CS Pin (no Read)" */
1235                                         BUFFER_ADD = 0x4b;
1236                                         /* scan 7 bit */
1237                                         BUFFER_ADD = (i > 7) ? 6 : (i - 1);
1238                                         /* TMS data bits */
1239                                         BUFFER_ADD = 0x0;
1240                                         cur_state = TAP_RTI;
1241                                         i -= (i > 7) ? 7 : i;
1242                                         /* LOG_DEBUG("added TMS scan (no read)"); */
1243                                 }
1244                                 if (cmd->cmd.runtest->end_state != -1)
1245                                         ft2232_end_state(cmd->cmd.runtest->end_state);
1246                                 if (cur_state != end_state)
1247                                 {
1248                                         /* command "Clock Data to TMS/CS Pin (no Read)" */
1249                                         BUFFER_ADD = 0x4b;
1250                                         /* scan 7 bit */
1251                                         BUFFER_ADD = 0x6;
1252                                         /* TMS data bits */
1253                                         BUFFER_ADD = TAP_MOVE(cur_state, end_state);
1254                                         cur_state = end_state;
1255                                         /* LOG_DEBUG("added TMS scan (no read)"); */
1256                                 }
1257                                 require_send = 1;
1258 #ifdef _DEBUG_JTAG_IO_
1259                                 LOG_DEBUG("runtest: %i, end in %i", cmd->cmd.runtest->num_cycles, end_state);
1260 #endif
1261                                 break;
1262                         case JTAG_STATEMOVE:
1263                                 /* only send the maximum buffer size that FT2232C can handle */
1264                                 predicted_size = 3;
1265                                 if (ft2232_buffer_size + predicted_size + 1 > FT2232_BUFFER_SIZE)
1266                                 {
1267                                         if (ft2232_send_and_recv(first_unsent, cmd) != ERROR_OK)
1268                                                 retval = ERROR_JTAG_QUEUE_FAILED;
1269                                         require_send = 0;
1270                                         first_unsent = cmd;
1271                                 }
1272                                 if (cmd->cmd.statemove->end_state != -1)
1273                                         ft2232_end_state(cmd->cmd.statemove->end_state);
1274                                 /* command "Clock Data to TMS/CS Pin (no Read)" */
1275                                 BUFFER_ADD = 0x4b;
1276                                 /* scan 7 bit */
1277                                 BUFFER_ADD = 0x6;
1278                                 /* TMS data bits */
1279                                 BUFFER_ADD = TAP_MOVE(cur_state, end_state);
1280                                 /* LOG_DEBUG("added TMS scan (no read)"); */
1281                                 cur_state = end_state;
1282                                 require_send = 1;
1283 #ifdef _DEBUG_JTAG_IO_
1284                                 LOG_DEBUG("statemove: %i", end_state);
1285 #endif
1286                                 break;
1287                         case JTAG_PATHMOVE:
1288                                 /* only send the maximum buffer size that FT2232C can handle */
1289                                 predicted_size = 3 * CEIL(cmd->cmd.pathmove->num_states, 7);
1290                                 if (ft2232_buffer_size + predicted_size + 1 > FT2232_BUFFER_SIZE)
1291                                 {
1292                                         if (ft2232_send_and_recv(first_unsent, cmd) != ERROR_OK)
1293                                                 retval = ERROR_JTAG_QUEUE_FAILED;
1294                                         require_send = 0;
1295                                         first_unsent = cmd;
1296                                 }
1297                                 ft2232_add_pathmove(cmd->cmd.pathmove);
1298                                 require_send = 1;
1299 #ifdef _DEBUG_JTAG_IO_
1300                                 LOG_DEBUG("pathmove: %i states, end in %i", cmd->cmd.pathmove->num_states, cmd->cmd.pathmove->path[cmd->cmd.pathmove->num_states - 1]);
1301 #endif
1302                                 break;
1303                         case JTAG_SCAN:
1304                                 scan_size = jtag_build_buffer(cmd->cmd.scan, &buffer);
1305                                 type = jtag_scan_type(cmd->cmd.scan);
1306                                 predicted_size = ft2232_predict_scan_out(scan_size, type);
1307                                 if ((predicted_size + 1) > FT2232_BUFFER_SIZE)
1308                                 {
1309                                         LOG_DEBUG("oversized ft2232 scan (predicted_size > FT2232_BUFFER_SIZE)");
1310                                         /* unsent commands before this */
1311                                         if (first_unsent != cmd)
1312                                                 if (ft2232_send_and_recv(first_unsent, cmd) != ERROR_OK)
1313                                                         retval = ERROR_JTAG_QUEUE_FAILED;
1314
1315                                         /* current command */
1316                                         if (cmd->cmd.scan->end_state != -1)
1317                                                 ft2232_end_state(cmd->cmd.scan->end_state);
1318                                         ft2232_large_scan(cmd->cmd.scan, type, buffer, scan_size);
1319                                         require_send = 0;
1320                                         first_unsent = cmd->next;
1321                                         if (buffer)
1322                                                 free(buffer);
1323                                         break;
1324                                 }
1325                                 else if (ft2232_buffer_size + predicted_size + 1 > FT2232_BUFFER_SIZE)
1326                                 {
1327                                         LOG_DEBUG("ft2232 buffer size reached, sending queued commands (first_unsent: %p, cmd: %p)", first_unsent, cmd);
1328                                         if (ft2232_send_and_recv(first_unsent, cmd) != ERROR_OK)
1329                                                 retval = ERROR_JTAG_QUEUE_FAILED;
1330                                         require_send = 0;
1331                                         first_unsent = cmd;
1332                                 }
1333                                 ft2232_expect_read += ft2232_predict_scan_in(scan_size, type);
1334                                 /* LOG_DEBUG("new read size: %i", ft2232_expect_read); */
1335                                 if (cmd->cmd.scan->end_state != -1)
1336                                         ft2232_end_state(cmd->cmd.scan->end_state);
1337                                 ft2232_add_scan(cmd->cmd.scan->ir_scan, type, buffer, scan_size);
1338                                 require_send = 1;
1339                                 if (buffer)
1340                                         free(buffer);
1341 #ifdef _DEBUG_JTAG_IO_
1342                                 LOG_DEBUG("%s scan, %i bit, end in %i", (cmd->cmd.scan->ir_scan) ? "IR" : "DR", scan_size, end_state);
1343 #endif
1344                                 break;
1345                         case JTAG_SLEEP:
1346                                 if (ft2232_send_and_recv(first_unsent, cmd) != ERROR_OK)
1347                                         retval = ERROR_JTAG_QUEUE_FAILED;
1348                                 first_unsent = cmd->next;
1349                                 jtag_sleep(cmd->cmd.sleep->us);
1350 #ifdef _DEBUG_JTAG_IO_
1351                                 LOG_DEBUG("sleep %i usec", cmd->cmd.sleep->us);
1352 #endif
1353                                 break;
1354                         default:
1355                                 LOG_ERROR("BUG: unknown JTAG command type encountered");
1356                                 exit(-1);
1357                 }
1358                 cmd = cmd->next;
1359         }
1360
1361         if (require_send > 0)
1362                 if (ft2232_send_and_recv(first_unsent, cmd) != ERROR_OK)
1363                         retval = ERROR_JTAG_QUEUE_FAILED;
1364
1365         return retval;
1366 }
1367
1368 #if BUILD_FT2232_FTD2XX == 1
1369 static int ft2232_init_ftd2xx(u16 vid, u16 pid, int more, int *try_more)
1370 {
1371         FT_STATUS status;
1372         DWORD openex_flags = 0;
1373         char *openex_string = NULL;
1374         u8 latency_timer;
1375
1376         LOG_DEBUG("'ft2232' interface using FTD2XX with '%s' layout (%4.4x:%4.4x)",
1377             ft2232_layout, vid, pid);
1378
1379 #if IS_WIN32 == 0
1380         /* Add non-standard Vid/Pid to the linux driver */
1381         if ((status = FT_SetVIDPID(vid, pid)) != FT_OK)
1382         {
1383                 LOG_WARNING("couldn't add %4.4x:%4.4x",
1384                     vid, pid);
1385         }
1386 #endif
1387
1388         if (ft2232_device_desc && ft2232_serial)
1389         {
1390                 LOG_WARNING("can't open by device description and serial number, giving precedence to serial");
1391                 ft2232_device_desc = NULL;
1392         }
1393
1394         if (ft2232_device_desc)
1395         {
1396                 openex_string = ft2232_device_desc;
1397                 openex_flags = FT_OPEN_BY_DESCRIPTION;
1398         }
1399         else if (ft2232_serial)
1400         {
1401                 openex_string = ft2232_serial;
1402                 openex_flags = FT_OPEN_BY_SERIAL_NUMBER;
1403         }
1404         else
1405         {
1406                 LOG_ERROR("neither device description nor serial number specified");
1407                 LOG_ERROR("please add \"ft2232_device_desc <string>\" or \"ft2232_serial <string>\" to your .cfg file");
1408
1409                 return ERROR_JTAG_INIT_FAILED;
1410         }
1411
1412         if ((status = FT_OpenEx(openex_string, openex_flags, &ftdih)) != FT_OK)
1413         {
1414                 DWORD num_devices;
1415
1416                 if (more) {
1417                         LOG_WARNING("unable to open ftdi device (trying more): %lu",
1418                             status);
1419                         *try_more = 1;
1420                         return ERROR_JTAG_INIT_FAILED;
1421                 }
1422                 LOG_ERROR("unable to open ftdi device: %lu", status);
1423                 status = FT_ListDevices(&num_devices, NULL, FT_LIST_NUMBER_ONLY);
1424                 if (status == FT_OK)
1425                 {
1426                         char **desc_array = malloc(sizeof(char*) * (num_devices + 1));
1427                         int i;
1428
1429                         for (i = 0; i < num_devices; i++)
1430                                 desc_array[i] = malloc(64);
1431                         desc_array[num_devices] = NULL;
1432
1433                         status = FT_ListDevices(desc_array, &num_devices, FT_LIST_ALL | openex_flags);
1434
1435                         if (status == FT_OK)
1436                         {
1437                                 LOG_ERROR("ListDevices: %lu\n", num_devices);
1438                                 for (i = 0; i < num_devices; i++)
1439                                         LOG_ERROR("%i: %s", i, desc_array[i]);
1440                         }
1441
1442                         for (i = 0; i < num_devices; i++)
1443                                 free(desc_array[i]);
1444                         free(desc_array);
1445                 }
1446                 else
1447                 {
1448                         LOG_ERROR("ListDevices: NONE\n");
1449                 }
1450                 return ERROR_JTAG_INIT_FAILED;
1451         }
1452
1453         if ((status = FT_SetLatencyTimer(ftdih, ft2232_latency)) != FT_OK)
1454         {
1455                 LOG_ERROR("unable to set latency timer: %lu", status);
1456                 return ERROR_JTAG_INIT_FAILED;
1457         }
1458
1459         if ((status = FT_GetLatencyTimer(ftdih, &latency_timer)) != FT_OK)
1460         {
1461                 LOG_ERROR("unable to get latency timer: %lu", status);
1462                 return ERROR_JTAG_INIT_FAILED;
1463         }
1464         else
1465         {
1466                 LOG_DEBUG("current latency timer: %i", latency_timer);
1467         }
1468
1469         if ((status = FT_SetTimeouts(ftdih, 5000, 5000)) != FT_OK)
1470         {
1471                 LOG_ERROR("unable to set timeouts: %lu", status);
1472                 return ERROR_JTAG_INIT_FAILED;
1473         }
1474
1475         if ((status = FT_SetBitMode(ftdih, 0x0b, 2)) != FT_OK)
1476         {
1477                 LOG_ERROR("unable to enable bit i/o mode: %lu", status);
1478                 return ERROR_JTAG_INIT_FAILED;
1479         }
1480
1481         return ERROR_OK;
1482 }
1483
1484 static int ft2232_purge_ftd2xx(void)
1485 {
1486         FT_STATUS status;
1487
1488         if ((status = FT_Purge(ftdih, FT_PURGE_RX | FT_PURGE_TX)) != FT_OK)
1489         {
1490                 LOG_ERROR("error purging ftd2xx device: %lu", status);
1491                 return ERROR_JTAG_INIT_FAILED;
1492         }
1493
1494         return ERROR_OK;
1495 }
1496 #endif /* BUILD_FT2232_FTD2XX == 1 */
1497
1498 #if BUILD_FT2232_LIBFTDI == 1
1499 static int ft2232_init_libftdi(u16 vid, u16 pid, int more, int *try_more)
1500 {
1501         u8 latency_timer;
1502
1503         LOG_DEBUG("'ft2232' interface using libftdi with '%s' layout (%4.4x:%4.4x)",
1504             ft2232_layout, vid, pid);
1505
1506         if (ftdi_init(&ftdic) < 0)
1507                 return ERROR_JTAG_INIT_FAILED;
1508
1509         /* context, vendor id, product id */
1510         if (ftdi_usb_open_desc(&ftdic, vid, pid, ft2232_device_desc,
1511             ft2232_serial) < 0) {
1512                 if (more)
1513                         LOG_WARNING("unable to open ftdi device (trying more): %s",
1514                              ftdic.error_str);
1515                 else
1516                         LOG_ERROR("unable to open ftdi device: %s", ftdic.error_str);
1517                 *try_more = 1;
1518                 return ERROR_JTAG_INIT_FAILED;
1519         }
1520
1521         if (ftdi_set_interface(&ftdic, INTERFACE_A) < 0)
1522         {
1523                 LOG_ERROR("unable to select FT2232 channel A: %s", ftdic.error_str);
1524                 return ERROR_JTAG_INIT_FAILED;
1525         }
1526
1527         if (ftdi_usb_reset(&ftdic) < 0)
1528         {
1529                 LOG_ERROR("unable to reset ftdi device");
1530                 return ERROR_JTAG_INIT_FAILED;
1531         }
1532
1533         if (ftdi_set_latency_timer(&ftdic, ft2232_latency) < 0)
1534         {
1535                 LOG_ERROR("unable to set latency timer");
1536                 return ERROR_JTAG_INIT_FAILED;
1537         }
1538
1539         if (ftdi_get_latency_timer(&ftdic, &latency_timer) < 0)
1540         {
1541                 LOG_ERROR("unable to get latency timer");
1542                 return ERROR_JTAG_INIT_FAILED;
1543         }
1544         else
1545         {
1546                 LOG_DEBUG("current latency timer: %i", latency_timer);
1547         }
1548
1549         ftdi_set_bitmode(&ftdic, 0x0b, 2); /* ctx, JTAG I/O mask */
1550
1551         return ERROR_OK;
1552 }
1553
1554 static int ft2232_purge_libftdi(void)
1555 {
1556         if (ftdi_usb_purge_buffers(&ftdic) < 0)
1557         {
1558                 LOG_ERROR("ftdi_purge_buffers: %s", ftdic.error_str);
1559                 return ERROR_JTAG_INIT_FAILED;
1560         }
1561
1562         return ERROR_OK;
1563 }
1564 #endif /* BUILD_FT2232_LIBFTDI == 1 */
1565
1566 int ft2232_init(void)
1567 {
1568         u8 buf[1];
1569         int retval;
1570         u32 bytes_written;
1571         ft2232_layout_t *cur_layout = ft2232_layouts;
1572         int i;
1573
1574         if ((ft2232_layout == NULL) || (ft2232_layout[0] == 0))
1575         {
1576                 ft2232_layout = "usbjtag";
1577                 LOG_WARNING("No ft2232 layout specified, using default 'usbjtag'");
1578         }
1579
1580         while (cur_layout->name)
1581         {
1582                 if (strcmp(cur_layout->name, ft2232_layout) == 0)
1583                 {
1584                         layout = cur_layout;
1585                         break;
1586                 }
1587                 cur_layout++;
1588         }
1589
1590         if (!layout)
1591         {
1592                 LOG_ERROR("No matching layout found for %s", ft2232_layout);
1593                 return ERROR_JTAG_INIT_FAILED;
1594         }
1595
1596         for (i = 0; 1; i++) {
1597                 /*
1598                  * "more indicates that there are more IDs to try, so we should
1599                  * not print an error for an ID mismatch (but for anything
1600                  * else, we should).
1601                  *
1602                  * try_more indicates that the error code returned indicates an
1603                  * ID mismatch (and nothing else) and that we should proceeed
1604                  * with the next ID pair.
1605                  */
1606                 int more = ft2232_vid[i+1] || ft2232_pid[i+1];
1607                 int try_more = 0;
1608
1609 #if BUILD_FT2232_FTD2XX == 1
1610                 retval = ft2232_init_ftd2xx(ft2232_vid[i], ft2232_pid[i],
1611                     more, &try_more);
1612 #elif BUILD_FT2232_LIBFTDI == 1
1613                 retval = ft2232_init_libftdi(ft2232_vid[i], ft2232_pid[i],
1614                     more, &try_more);
1615 #endif
1616                 if (retval >= 0)
1617                         break;
1618                 if (!more || !try_more)
1619                         return retval;
1620         }
1621
1622         ft2232_buffer_size = 0;
1623         ft2232_buffer = malloc(FT2232_BUFFER_SIZE);
1624
1625         if (layout->init() != ERROR_OK)
1626                 return ERROR_JTAG_INIT_FAILED;
1627
1628         ft2232_speed(jtag_speed);
1629
1630         buf[0] = 0x85; /* Disconnect TDI/DO to TDO/DI for Loopback */
1631         if (((retval = ft2232_write(buf, 1, &bytes_written)) != ERROR_OK) || (bytes_written != 1))
1632         {
1633                 LOG_ERROR("couldn't write to FT2232 to disable loopback");
1634                 return ERROR_JTAG_INIT_FAILED;
1635         }
1636
1637 #if BUILD_FT2232_FTD2XX == 1
1638         return ft2232_purge_ftd2xx();
1639 #elif BUILD_FT2232_LIBFTDI == 1
1640         return ft2232_purge_libftdi();
1641 #endif
1642
1643         return ERROR_OK;
1644 }
1645
1646 int usbjtag_init(void)
1647 {
1648         u8 buf[3];
1649         u32 bytes_written;
1650
1651         low_output = 0x08;
1652         low_direction = 0x0b;
1653
1654         if (strcmp(ft2232_layout, "usbjtag") == 0)
1655         {
1656                 nTRST = 0x10;
1657                 nTRSTnOE = 0x10;
1658                 nSRST = 0x40;
1659                 nSRSTnOE = 0x40;
1660         }
1661         else if (strcmp(ft2232_layout, "signalyzer") == 0)
1662         {
1663                 nTRST = 0x10;
1664                 nTRSTnOE = 0x10;
1665                 nSRST = 0x20;
1666                 nSRSTnOE = 0x20;
1667         }
1668         else if (strcmp(ft2232_layout, "evb_lm3s811") == 0)
1669         {
1670                 nTRST = 0x0;
1671                 nTRSTnOE = 0x00;
1672                 nSRST = 0x20;
1673                 nSRSTnOE = 0x20;
1674                 low_output = 0x88;
1675                 low_direction = 0x8b;
1676         }
1677         else
1678         {
1679                 LOG_ERROR("BUG: usbjtag_init called for unknown layout '%s'", ft2232_layout);
1680                 return ERROR_JTAG_INIT_FAILED;
1681         }
1682
1683         if (jtag_reset_config & RESET_TRST_OPEN_DRAIN)
1684         {
1685                 low_direction &= ~nTRSTnOE; /* nTRST input */
1686                 low_output &= ~nTRST; /* nTRST = 0 */
1687         }
1688         else
1689         {
1690                 low_direction |= nTRSTnOE; /* nTRST output */
1691                 low_output |= nTRST; /* nTRST = 1 */
1692         }
1693
1694         if (jtag_reset_config & RESET_SRST_PUSH_PULL)
1695         {
1696                 low_direction |= nSRSTnOE; /* nSRST output */
1697                 low_output |= nSRST; /* nSRST = 1 */
1698         }
1699         else
1700         {
1701                 low_direction &= ~nSRSTnOE; /* nSRST input */
1702                 low_output &= ~nSRST; /* nSRST = 0 */
1703         }
1704
1705         /* initialize low byte for jtag */
1706         buf[0] = 0x80; /* command "set data bits low byte" */
1707         buf[1] = low_output; /* value (TMS=1,TCK=0, TDI=0, xRST high) */
1708         buf[2] = low_direction; /* dir (output=1), TCK/TDI/TMS=out, TDO=in */
1709         LOG_DEBUG("%2.2x %2.2x %2.2x", buf[0], buf[1], buf[2]);
1710
1711         if (((ft2232_write(buf, 3, &bytes_written)) != ERROR_OK) || (bytes_written != 3))
1712         {
1713                 LOG_ERROR("couldn't initialize FT2232 with 'USBJTAG' layout");
1714                 return ERROR_JTAG_INIT_FAILED;
1715         }
1716
1717         return ERROR_OK;
1718 }
1719
1720 int jtagkey_init(void)
1721 {
1722         u8 buf[3];
1723         u32 bytes_written;
1724
1725         low_output = 0x08;
1726         low_direction = 0x1b;
1727
1728         /* initialize low byte for jtag */
1729         buf[0] = 0x80; /* command "set data bits low byte" */
1730         buf[1] = low_output; /* value (TMS=1,TCK=0, TDI=0, nOE=0) */
1731         buf[2] = low_direction; /* dir (output=1), TCK/TDI/TMS=out, TDO=in, nOE=out */
1732         LOG_DEBUG("%2.2x %2.2x %2.2x", buf[0], buf[1], buf[2]);
1733
1734         if (((ft2232_write(buf, 3, &bytes_written)) != ERROR_OK) || (bytes_written != 3))
1735         {
1736                 LOG_ERROR("couldn't initialize FT2232 with 'JTAGkey' layout");
1737                 return ERROR_JTAG_INIT_FAILED;
1738         }
1739
1740         if (strcmp(layout->name, "jtagkey") == 0)
1741         {
1742                 nTRST = 0x01;
1743                 nTRSTnOE = 0x4;
1744                 nSRST = 0x02;
1745                 nSRSTnOE = 0x08;
1746         }
1747         else if ((strcmp(layout->name, "jtagkey_prototype_v1") == 0) ||
1748                 (strcmp(layout->name, "oocdlink") == 0))
1749         {
1750                 nTRST = 0x02;
1751                 nTRSTnOE = 0x1;
1752                 nSRST = 0x08;
1753                 nSRSTnOE = 0x04;
1754         }
1755         else
1756         {
1757                 LOG_ERROR("BUG: jtagkey_init called for non jtagkey layout");
1758                 exit(-1);
1759         }
1760
1761         high_output = 0x0;
1762         high_direction = 0x0f;
1763
1764         if (jtag_reset_config & RESET_TRST_OPEN_DRAIN)
1765         {
1766                 high_output |= nTRSTnOE;
1767                 high_output &= ~nTRST;
1768         }
1769         else
1770         {
1771                 high_output &= ~nTRSTnOE;
1772                 high_output |= nTRST;
1773         }
1774
1775         if (jtag_reset_config & RESET_SRST_PUSH_PULL)
1776         {
1777                 high_output &= ~nSRSTnOE;
1778                 high_output |= nSRST;
1779         }
1780         else
1781         {
1782                 high_output |= nSRSTnOE;
1783                 high_output &= ~nSRST;
1784         }
1785
1786         /* initialize high port */
1787         buf[0] = 0x82; /* command "set data bits high byte" */
1788         buf[1] = high_output; /* value */
1789         buf[2] = high_direction;   /* all outputs (xRST and xRSTnOE) */
1790         LOG_DEBUG("%2.2x %2.2x %2.2x", buf[0], buf[1], buf[2]);
1791
1792         if (((ft2232_write(buf, 3, &bytes_written)) != ERROR_OK) || (bytes_written != 3))
1793         {
1794                 LOG_ERROR("couldn't initialize FT2232 with 'JTAGkey' layout");
1795                 return ERROR_JTAG_INIT_FAILED;
1796         }
1797
1798         return ERROR_OK;
1799 }
1800
1801 int olimex_jtag_init(void)
1802 {
1803         u8 buf[3];
1804         u32 bytes_written;
1805
1806         low_output = 0x08;
1807         low_direction = 0x1b;
1808
1809         /* initialize low byte for jtag */
1810         buf[0] = 0x80; /* command "set data bits low byte" */
1811         buf[1] = low_output; /* value (TMS=1,TCK=0, TDI=0, nOE=0) */
1812         buf[2] = low_direction; /* dir (output=1), TCK/TDI/TMS=out, TDO=in, nOE=out */
1813         LOG_DEBUG("%2.2x %2.2x %2.2x", buf[0], buf[1], buf[2]);
1814
1815         if (((ft2232_write(buf, 3, &bytes_written)) != ERROR_OK) || (bytes_written != 3))
1816         {
1817                 LOG_ERROR("couldn't initialize FT2232 with 'JTAGkey' layout");
1818                 return ERROR_JTAG_INIT_FAILED;
1819         }
1820
1821         nTRST = 0x01;
1822         nTRSTnOE = 0x4;
1823         nSRST = 0x02;
1824         nSRSTnOE = 0x00; /* no output enable for nSRST */
1825
1826         high_output = 0x0;
1827         high_direction = 0x0f;
1828
1829         if (jtag_reset_config & RESET_TRST_OPEN_DRAIN)
1830         {
1831                 high_output |= nTRSTnOE;
1832                 high_output &= ~nTRST;
1833         }
1834         else
1835         {
1836                 high_output &= ~nTRSTnOE;
1837                 high_output |= nTRST;
1838         }
1839
1840         if (jtag_reset_config & RESET_SRST_PUSH_PULL)
1841         {
1842                 LOG_ERROR("can't set nSRST to push-pull on the Olimex ARM-USB-OCD");
1843         }
1844         else
1845         {
1846                 high_output &= ~nSRST;
1847         }
1848
1849         /* turn red LED on */
1850         high_output |= 0x08;
1851
1852         /* initialize high port */
1853         buf[0] = 0x82; /* command "set data bits high byte" */
1854         buf[1] = high_output; /* value */
1855         buf[2] = high_direction;   /* all outputs (xRST and xRSTnOE) */
1856         LOG_DEBUG("%2.2x %2.2x %2.2x", buf[0], buf[1], buf[2]);
1857
1858         if (((ft2232_write(buf, 3, &bytes_written)) != ERROR_OK) || (bytes_written != 3))
1859         {
1860                 LOG_ERROR("couldn't initialize FT2232 with 'JTAGkey' layout");
1861                 return ERROR_JTAG_INIT_FAILED;
1862         }
1863
1864         return ERROR_OK;
1865 }
1866
1867 int flyswatter_init(void)
1868 {
1869         u8 buf[3];
1870         u32 bytes_written;
1871
1872         low_output = 0x18;
1873         low_direction = 0xfb;
1874
1875         /* initialize low byte for jtag */
1876         buf[0] = 0x80; /* command "set data bits low byte" */
1877         buf[1] = low_output; /* value (TMS=1,TCK=0, TDI=0, nOE=0) */
1878         buf[2] = low_direction; /* dir (output=1), TCK/TDI/TMS=out, TDO=in, nOE[12]=out, n[ST]srst=out */
1879         LOG_DEBUG("%2.2x %2.2x %2.2x", buf[0], buf[1], buf[2]);
1880
1881         if (((ft2232_write(buf, 3, &bytes_written)) != ERROR_OK) || (bytes_written != 3))
1882         {
1883                 LOG_ERROR("couldn't initialize FT2232 with 'flyswatter' layout");
1884                 return ERROR_JTAG_INIT_FAILED;
1885         }
1886
1887         nTRST = 0x10;
1888         nTRSTnOE = 0x0; /* not output enable for nTRST */
1889         nSRST = 0x20;
1890         nSRSTnOE = 0x00; /* no output enable for nSRST */
1891
1892         high_output = 0x00;
1893         high_direction = 0x0c;
1894
1895         /* turn red LED1 on, LED2 off */
1896         high_output |= 0x08;
1897
1898         /* initialize high port */
1899         buf[0] = 0x82; /* command "set data bits high byte" */
1900         buf[1] = high_output; /* value */
1901         buf[2] = high_direction;   /* all outputs (xRST and xRSTnOE) */
1902         LOG_DEBUG("%2.2x %2.2x %2.2x", buf[0], buf[1], buf[2]);
1903
1904         if (((ft2232_write(buf, 3, &bytes_written)) != ERROR_OK) || (bytes_written != 3))
1905         {
1906                 LOG_ERROR("couldn't initialize FT2232 with 'flyswatter' layout");
1907                 return ERROR_JTAG_INIT_FAILED;
1908         }
1909
1910         return ERROR_OK;
1911 }
1912
1913 int turtle_init(void)
1914 {
1915         u8 buf[3];
1916         u32 bytes_written;
1917
1918         low_output = 0x08;
1919         low_direction = 0x5b;
1920
1921         /* initialize low byte for jtag */
1922         buf[0] = 0x80; /* command "set data bits low byte" */
1923         buf[1] = low_output; /* value (TMS=1,TCK=0, TDI=0, nOE=0) */
1924         buf[2] = low_direction; /* dir (output=1), TCK/TDI/TMS=out, TDO=in, nOE=out */
1925         LOG_DEBUG("%2.2x %2.2x %2.2x", buf[0], buf[1], buf[2]);
1926
1927         if (((ft2232_write(buf, 3, &bytes_written)) != ERROR_OK) || (bytes_written != 3))
1928         {
1929                 LOG_ERROR("couldn't initialize FT2232 with 'turtelizer2' layout");
1930                 return ERROR_JTAG_INIT_FAILED;
1931         }
1932
1933         nSRST = 0x40;
1934
1935         high_output = 0x00;
1936         high_direction = 0x0C;
1937
1938         /* initialize high port */
1939         buf[0] = 0x82; /* command "set data bits high byte" */
1940         buf[1] = high_output;
1941         buf[2] = high_direction;
1942         LOG_DEBUG("%2.2x %2.2x %2.2x", buf[0], buf[1], buf[2]);
1943
1944         if (((ft2232_write(buf, 3, &bytes_written)) != ERROR_OK) || (bytes_written != 3))
1945         {
1946                 LOG_ERROR("couldn't initialize FT2232 with 'turtelizer2' layout");
1947                 return ERROR_JTAG_INIT_FAILED;
1948         }
1949
1950         return ERROR_OK;
1951 }
1952
1953 int comstick_init(void)
1954 {
1955         u8 buf[3];
1956         u32 bytes_written;
1957
1958         low_output = 0x08;
1959         low_direction = 0x0b;
1960
1961         /* initialize low byte for jtag */
1962         buf[0] = 0x80; /* command "set data bits low byte" */
1963         buf[1] = low_output; /* value (TMS=1,TCK=0, TDI=0, nOE=0) */
1964         buf[2] = low_direction; /* dir (output=1), TCK/TDI/TMS=out, TDO=in, nOE=out */
1965         LOG_DEBUG("%2.2x %2.2x %2.2x", buf[0], buf[1], buf[2]);
1966
1967         if (((ft2232_write(buf, 3, &bytes_written)) != ERROR_OK) || (bytes_written != 3))
1968         {
1969                 LOG_ERROR("couldn't initialize FT2232 with 'comstick' layout");
1970                 return ERROR_JTAG_INIT_FAILED;
1971         }
1972
1973         nTRST = 0x01;
1974         nTRSTnOE = 0x00; /* no output enable for nTRST */
1975         nSRST = 0x02;
1976         nSRSTnOE = 0x00; /* no output enable for nSRST */
1977
1978         high_output = 0x03;
1979         high_direction = 0x03;
1980
1981         /* initialize high port */
1982         buf[0] = 0x82; /* command "set data bits high byte" */
1983         buf[1] = high_output;
1984         buf[2] = high_direction;
1985         LOG_DEBUG("%2.2x %2.2x %2.2x", buf[0], buf[1], buf[2]);
1986
1987         if (((ft2232_write(buf, 3, &bytes_written)) != ERROR_OK) || (bytes_written != 3))
1988         {
1989                 LOG_ERROR("couldn't initialize FT2232 with 'comstick' layout");
1990                 return ERROR_JTAG_INIT_FAILED;
1991         }
1992
1993         return ERROR_OK;
1994 }
1995
1996 int stm32stick_init(void)
1997 {
1998         u8 buf[3];
1999         u32 bytes_written;
2000
2001         low_output = 0x88;
2002         low_direction = 0x8b;
2003
2004         /* initialize low byte for jtag */
2005         buf[0] = 0x80; /* command "set data bits low byte" */
2006         buf[1] = low_output; /* value (TMS=1,TCK=0, TDI=0, nOE=0) */
2007         buf[2] = low_direction; /* dir (output=1), TCK/TDI/TMS=out, TDO=in, nOE=out */
2008         LOG_DEBUG("%2.2x %2.2x %2.2x", buf[0], buf[1], buf[2]);
2009
2010         if (((ft2232_write(buf, 3, &bytes_written)) != ERROR_OK) || (bytes_written != 3))
2011         {
2012                 LOG_ERROR("couldn't initialize FT2232 with 'stm32stick' layout");
2013                 return ERROR_JTAG_INIT_FAILED;
2014         }
2015
2016         nTRST = 0x01;
2017         nTRSTnOE = 0x00; /* no output enable for nTRST */
2018         nSRST = 0x80;
2019         nSRSTnOE = 0x00; /* no output enable for nSRST */
2020
2021         high_output = 0x01;
2022         high_direction = 0x03;
2023
2024         /* initialize high port */
2025         buf[0] = 0x82; /* command "set data bits high byte" */
2026         buf[1] = high_output;
2027         buf[2] = high_direction;
2028         LOG_DEBUG("%2.2x %2.2x %2.2x", buf[0], buf[1], buf[2]);
2029
2030         if (((ft2232_write(buf, 3, &bytes_written)) != ERROR_OK) || (bytes_written != 3))
2031         {
2032                 LOG_ERROR("couldn't initialize FT2232 with 'stm32stick' layout");
2033                 return ERROR_JTAG_INIT_FAILED;
2034         }
2035
2036         return ERROR_OK;
2037 }
2038
2039 void olimex_jtag_blink(void)
2040 {
2041         /* Olimex ARM-USB-OCD has a LED connected to ACBUS3
2042          * ACBUS3 is bit 3 of the GPIOH port
2043          */
2044         if (high_output & 0x08)
2045         {
2046                 /* set port pin high */
2047                 high_output &= 0x07;
2048         }
2049         else
2050         {
2051                 /* set port pin low */
2052                 high_output |= 0x08;
2053         }
2054
2055         BUFFER_ADD = 0x82;
2056         BUFFER_ADD = high_output;
2057         BUFFER_ADD = high_direction;
2058 }
2059
2060 void turtle_jtag_blink(void)
2061 {
2062         /*
2063    * Turtelizer2 has two LEDs connected to ACBUS2 and ACBUS3
2064          */
2065         if (high_output & 0x08)
2066         {
2067                 high_output = 0x04;
2068         }
2069         else
2070         {
2071                 high_output = 0x08;
2072         }
2073
2074         BUFFER_ADD = 0x82;
2075         BUFFER_ADD = high_output;
2076         BUFFER_ADD = high_direction;
2077 }
2078
2079
2080 int ft2232_quit(void)
2081 {
2082 #if BUILD_FT2232_FTD2XX == 1
2083         FT_STATUS status;
2084
2085         status = FT_Close(ftdih);
2086 #elif BUILD_FT2232_LIBFTDI == 1
2087         ftdi_disable_bitbang(&ftdic);
2088
2089         ftdi_usb_close(&ftdic);
2090
2091         ftdi_deinit(&ftdic);
2092 #endif
2093
2094         free(ft2232_buffer);
2095         ft2232_buffer = NULL;
2096
2097         return ERROR_OK;
2098 }
2099
2100 int ft2232_handle_device_desc_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2101 {
2102         if (argc == 1)
2103         {
2104                 ft2232_device_desc = strdup(args[0]);
2105         }
2106         else
2107         {
2108                 LOG_ERROR("expected exactly one argument to ft2232_device_desc <description>");
2109         }
2110
2111         return ERROR_OK;
2112 }
2113
2114 int ft2232_handle_serial_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2115 {
2116         if (argc == 1)
2117         {
2118                 ft2232_serial = strdup(args[0]);
2119         }
2120         else
2121         {
2122                 LOG_ERROR("expected exactly one argument to ft2232_serial <serial-number>");
2123         }
2124
2125         return ERROR_OK;
2126 }
2127
2128 int ft2232_handle_layout_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2129 {
2130         if (argc == 0)
2131                 return ERROR_OK;
2132
2133         ft2232_layout = malloc(strlen(args[0]) + 1);
2134         strcpy(ft2232_layout, args[0]);
2135
2136         return ERROR_OK;
2137 }
2138
2139 int ft2232_handle_vid_pid_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2140 {
2141         int i;
2142
2143         if (argc > MAX_USB_IDS*2) {
2144                 LOG_WARNING("ignoring extra IDs in ft2232_vid_pid "
2145                     "(maximum is %d pairs)", MAX_USB_IDS);
2146                 argc = MAX_USB_IDS*2;
2147         }
2148         if (argc < 2 || (argc & 1))
2149         {
2150                 LOG_WARNING("incomplete ft2232_vid_pid configuration directive");
2151                 if (argc < 2)
2152                         return ERROR_OK;
2153         }
2154
2155         for (i = 0; i+1 < argc; i += 2) {
2156                 ft2232_vid[i >> 1] = strtol(args[i], NULL, 0);
2157                 ft2232_pid[i >> 1] = strtol(args[i+1], NULL, 0);
2158         }
2159         /*
2160          * Explicitly terminate, in case there are multiples instances of
2161          * ft2232_vid_pid.
2162          */
2163         ft2232_vid[i >> 1] = ft2232_pid[i >> 1] = 0;
2164
2165         return ERROR_OK;
2166 }
2167
2168 int ft2232_handle_latency_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2169 {
2170         if (argc == 1)
2171         {
2172                 ft2232_latency = atoi(args[0]);
2173         }
2174         else
2175         {
2176                 LOG_ERROR("expected exactly one argument to ft2232_latency <ms>");
2177         }
2178
2179         return ERROR_OK;
2180 }
2181
2182