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   1 /***************************************************************************
   2  *   Copyright (C) 2004, 2006 by Dominic Rath                              *
   3  *   Dominic.Rath@gmx.de                                                   *
   4  *                                                                         *
   5  *   This program is free software; you can redistribute it and/or modify  *
   6  *   it under the terms of the GNU General Public License as published by  *
   7  *   the Free Software Foundation; either version 2 of the License, or     *
   8  *   (at your option) any later version.                                   *
   9  *                                                                         *
  10  *   This program is distributed in the hope that it will be useful,       *
  11  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  12  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  13  *   GNU General Public License for more details.                          *
  14  *                                                                         *
  15  *   You should have received a copy of the GNU General Public License     *
  16  *   along with this program; if not, write to the                         *
  17  *   Free Software Foundation, Inc.,                                       *
  18  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
  19  ***************************************************************************/
  20 #ifdef HAVE_CONFIG_H
  21 #include "config.h"
  22 #endif
  23
  24 #if IS_CYGWIN == 1
  25 #include "windows.h"
  26 #endif
  27
  28 #include "replacements.h"
  29
  30 /* project specific includes */
  31 #include "log.h"
  32 #include "types.h"
  33 #include "jtag.h"
  34 #include "configuration.h"
  35 #include "time_support.h"
  36
  37 /* system includes */
  38 #include <string.h>
  39 #include <stdlib.h>
  40 #include <unistd.h>
  41
  42 /* FT2232 access library includes */
  43 #if BUILD_FT2232_FTD2XX == 1
  44 #include <ftd2xx.h>
  45 #elif BUILD_FT2232_LIBFTDI == 1
  46 #include <ftdi.h>
  47 #endif
  48
  49 #include <sys/time.h>
  50 #include <time.h>
  51
  52 /* enable this to debug io latency
  53  */
  54 #if 0
  55 #define _DEBUG_USB_IO_
  56 #endif
  57
  58 /* enable this to debug communication
  59  */
  60 #if 0
  61 #define _DEBUG_USB_COMMS_
  62 #endif
  63
  64 int ft2232_execute_queue(void);
  65
  66 int ft2232_speed(int speed);
  67 int ft2232_register_commands(struct command_context_s *cmd_ctx);
  68 int ft2232_init(void);
  69 int ft2232_quit(void);
  70
  71 int ft2232_handle_device_desc_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  72 int ft2232_handle_serial_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  73 int ft2232_handle_layout_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  74 int ft2232_handle_vid_pid_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  75 int ft2232_handle_latency_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  76
  77 char *ft2232_device_desc = NULL;
  78 char *ft2232_serial = NULL;
  79 char *ft2232_layout = NULL;
  80 unsigned char ft2232_latency = 2;
  81
  82 #define MAX_USB_IDS     8
  83 /* vid = pid = 0 marks the end of the list */
  84 static u16 ft2232_vid[MAX_USB_IDS+1] = { 0x0403, 0 };
  85 static u16 ft2232_pid[MAX_USB_IDS+1] = { 0x6010, 0 };
  86
  87 typedef struct ft2232_layout_s
  88 {
  89         char* name;
  90         int(*init)(void);
  91         void(*reset)(int trst, int srst);
  92         void(*blink)(void);
  93 } ft2232_layout_t;
  94
  95 /* init procedures for supported layouts */
  96 int usbjtag_init(void);
  97 int jtagkey_init(void);
  98 int olimex_jtag_init(void);
  99 int flyswatter_init(void);
 100 int turtle_init(void);
 101 int comstick_init(void);
 102 int stm32stick_init(void);
 103
 104 /* reset procedures for supported layouts */
 105 void usbjtag_reset(int trst, int srst);
 106 void jtagkey_reset(int trst, int srst);
 107 void olimex_jtag_reset(int trst, int srst);
 108 void flyswatter_reset(int trst, int srst);
 109 void turtle_reset(int trst, int srst);
 110 void comstick_reset(int trst, int srst);
 111 void stm32stick_reset(int trst, int srst);
 112
 113 /* blink procedures for layouts that support a blinking led */
 114 void olimex_jtag_blink(void);
 115 void turtle_jtag_blink(void);
 116
 117 ft2232_layout_t ft2232_layouts[] =
 118 {
 119         {"usbjtag", usbjtag_init, usbjtag_reset, NULL},
 120         {"jtagkey", jtagkey_init, jtagkey_reset, NULL},
 121         {"jtagkey_prototype_v1", jtagkey_init, jtagkey_reset, NULL},
 122         {"oocdlink", jtagkey_init, jtagkey_reset, NULL},
 123         {"signalyzer", usbjtag_init, usbjtag_reset, NULL},
 124         {"evb_lm3s811", usbjtag_init, usbjtag_reset, NULL},
 125         {"olimex-jtag", olimex_jtag_init, olimex_jtag_reset, olimex_jtag_blink},
 126         {"flyswatter", flyswatter_init, flyswatter_reset, NULL},
 127         {"turtelizer2", turtle_init, turtle_reset, turtle_jtag_blink},
 128         {"comstick", comstick_init, comstick_reset, NULL},
 129         {"stm32stick", stm32stick_init, stm32stick_reset, NULL},
 130         {NULL, NULL, NULL},
 131 };
 132
 133 static u8 nTRST, nTRSTnOE, nSRST, nSRSTnOE;
 134
 135 static ft2232_layout_t *layout;
 136 static u8 low_output = 0x0;
 137 static u8 low_direction = 0x0;
 138 static u8 high_output = 0x0;
 139 static u8 high_direction = 0x0;
 140
 141 #if BUILD_FT2232_FTD2XX == 1
 142 static FT_HANDLE ftdih = NULL;
 143 #elif BUILD_FT2232_LIBFTDI == 1
 144 static struct ftdi_context ftdic;
 145 #endif
 146
 147 static u8 *ft2232_buffer = NULL;
 148 static int ft2232_buffer_size = 0;
 149 static int ft2232_read_pointer = 0;
 150 static int ft2232_expect_read = 0;
 151 #define FT2232_BUFFER_SIZE      131072
 152 #define BUFFER_ADD ft2232_buffer[ft2232_buffer_size++]
 153 #define BUFFER_READ ft2232_buffer[ft2232_read_pointer++]
 154
 155 jtag_interface_t ft2232_interface =
 156 {
 157
 158         .name = "ft2232",
 159
 160         .execute_queue = ft2232_execute_queue,
 161
 162         .speed = ft2232_speed,
 163         .register_commands = ft2232_register_commands,
 164         .init = ft2232_init,
 165         .quit = ft2232_quit,
 166 };
 167
 168 int ft2232_write(u8 *buf, int size, u32* bytes_written)
 169 {
 170 #if BUILD_FT2232_FTD2XX == 1
 171         FT_STATUS status;
 172         DWORD dw_bytes_written;
 173         if ((status = FT_Write(ftdih, buf, size, &dw_bytes_written)) != FT_OK)
 174         {
 175                 *bytes_written = dw_bytes_written;
 176                 LOG_ERROR("FT_Write returned: %lu", status);
 177                 return ERROR_JTAG_DEVICE_ERROR;
 178         }
 179         else
 180         {
 181                 *bytes_written = dw_bytes_written;
 182                 return ERROR_OK;
 183         }
 184 #elif BUILD_FT2232_LIBFTDI == 1
 185         int retval;
 186         if ((retval = ftdi_write_data(&ftdic, buf, size)) < 0)
 187         {
 188                 *bytes_written = 0;
 189                 LOG_ERROR("ftdi_write_data: %s", ftdi_get_error_string(&ftdic));
 190                 return ERROR_JTAG_DEVICE_ERROR;
 191         }
 192         else
 193         {
 194                 *bytes_written = retval;
 195                 return ERROR_OK;
 196         }
 197 #endif
 198 }
 199
 200 int ft2232_read(u8* buf, int size, u32* bytes_read)
 201 {
 202 #if BUILD_FT2232_FTD2XX == 1
 203         DWORD dw_bytes_read;
 204         FT_STATUS status;
 205         int timeout = 5;
 206         *bytes_read = 0;
 207
 208         while ((*bytes_read < size) && timeout--)
 209         {
 210                 if ((status = FT_Read(ftdih, buf + *bytes_read, size -
 211                         *bytes_read, &dw_bytes_read)) != FT_OK)
 212                 {
 213                         *bytes_read = 0;
 214                         LOG_ERROR("FT_Read returned: %lu", status);
 215                         return ERROR_JTAG_DEVICE_ERROR;
 216                 }
 217                 *bytes_read += dw_bytes_read;
 218         }
 219 #elif BUILD_FT2232_LIBFTDI == 1
 220         int retval;
 221         int timeout = 100;
 222         *bytes_read = 0;
 223
 224         while ((*bytes_read < size) && timeout--)
 225         {
 226                 if ((retval = ftdi_read_data(&ftdic, buf + *bytes_read, size - *bytes_read)) < 0)
 227                 {
 228                         *bytes_read = 0;
 229                         LOG_ERROR("ftdi_read_data: %s", ftdi_get_error_string(&ftdic));
 230                         return ERROR_JTAG_DEVICE_ERROR;
 231                 }
 232                 *bytes_read += retval;
 233         }
 234 #endif
 235
 236         if (*bytes_read < size)
 237         {
 238                 LOG_ERROR("couldn't read the requested number of bytes from FT2232 device (%i < %i)", *bytes_read, size);
 239                 return ERROR_JTAG_DEVICE_ERROR;
 240         }
 241
 242         return ERROR_OK;
 243 }
 244
 245 int ft2232_speed(int speed)
 246 {
 247         u8 buf[3];
 248         int retval;
 249         u32 bytes_written;
 250
 251         buf[0] = 0x86; /* command "set divisor" */
 252         buf[1] = speed & 0xff; /* valueL (0=6MHz, 1=3MHz, 2=2.0MHz, ...*/
 253         buf[2] = (speed >> 8) & 0xff; /* valueH */
 254
 255         LOG_DEBUG("%2.2x %2.2x %2.2x", buf[0], buf[1], buf[2]);
 256         if (((retval = ft2232_write(buf, 3, &bytes_written)) != ERROR_OK) || (bytes_written != 3))
 257         {
 258                 LOG_ERROR("couldn't set FT2232 TCK speed");
 259                 return retval;
 260         }
 261
 262         jtag_speed = speed;
 263
 264         return ERROR_OK;
 265 }
 266
 267 int ft2232_register_commands(struct command_context_s *cmd_ctx)
 268 {
 269         register_command(cmd_ctx, NULL, "ft2232_device_desc", ft2232_handle_device_desc_command,
 270                 COMMAND_CONFIG, NULL);
 271         register_command(cmd_ctx, NULL, "ft2232_serial", ft2232_handle_serial_command,
 272                 COMMAND_CONFIG, NULL);
 273         register_command(cmd_ctx, NULL, "ft2232_layout", ft2232_handle_layout_command,
 274                 COMMAND_CONFIG, NULL);
 275         register_command(cmd_ctx, NULL, "ft2232_vid_pid", ft2232_handle_vid_pid_command,
 276                                          COMMAND_CONFIG, NULL);
 277         register_command(cmd_ctx, NULL, "ft2232_latency", ft2232_handle_latency_command,
 278                                          COMMAND_CONFIG, NULL);
 279         return ERROR_OK;
 280 }
 281
 282 void ft2232_end_state(enum tap_state state)
 283 {
 284         if (tap_move_map[state] != -1)
 285                 end_state = state;
 286         else
 287         {
 288                 LOG_ERROR("BUG: %i is not a valid end state", state);
 289                 exit(-1);
 290         }
 291 }
 292
 293 void ft2232_read_scan(enum scan_type type, u8* buffer, int scan_size)
 294 {
 295         int num_bytes = ((scan_size + 7) / 8);
 296         int bits_left = scan_size;
 297         int cur_byte = 0;
 298
 299         while(num_bytes-- > 1)
 300         {
 301                 buffer[cur_byte] = BUFFER_READ;
 302                 cur_byte++;
 303                 bits_left -= 8;
 304         }
 305
 306         buffer[cur_byte] = 0x0;
 307
 308         if (bits_left > 1)
 309         {
 310                 buffer[cur_byte] = BUFFER_READ >> 1;
 311         }
 312
 313         buffer[cur_byte] = (buffer[cur_byte] | ((BUFFER_READ & 0x02) << 6)) >> (8 - bits_left);
 314
 315 }
 316
 317 void ft2232_debug_dump_buffer(void)
 318 {
 319         int i;
 320         char line[256];
 321         char *line_p = line;
 322
 323         for (i = 0; i < ft2232_buffer_size; i++)
 324         {
 325                 line_p += snprintf(line_p, 256 - (line_p - line), "%2.2x ", ft2232_buffer[i]);
 326                 if (i % 16 == 15)
 327                 {
 328                         LOG_DEBUG("%s", line);
 329                         line_p = line;
 330                 }
 331         }
 332
 333         if (line_p != line)
 334                 LOG_DEBUG("%s", line);
 335 }
 336
 337 int ft2232_send_and_recv(jtag_command_t *first, jtag_command_t *last)
 338 {
 339         jtag_command_t *cmd;
 340         u8 *buffer;
 341         int scan_size;
 342         enum scan_type type;
 343         int retval;
 344         u32 bytes_written;
 345         u32 bytes_read;
 346
 347 #ifdef _DEBUG_USB_IO_
 348         struct timeval start, inter, inter2, end;
 349         struct timeval d_inter, d_inter2, d_end;
 350 #endif
 351
 352 #ifdef _DEBUG_USB_COMMS_
 353         LOG_DEBUG("write buffer (size %i):", ft2232_buffer_size);
 354         ft2232_debug_dump_buffer();
 355 #endif
 356
 357 #ifdef _DEBUG_USB_IO_
 358         gettimeofday(&start, NULL);
 359 #endif
 360
 361         if ((retval = ft2232_write(ft2232_buffer, ft2232_buffer_size, &bytes_written)) != ERROR_OK)
 362         {
 363                 LOG_ERROR("couldn't write MPSSE commands to FT2232");
 364                 exit(-1);
 365         }
 366
 367 #ifdef _DEBUG_USB_IO_
 368         gettimeofday(&inter, NULL);
 369 #endif
 370
 371         if (ft2232_expect_read)
 372         {
 373                 int timeout = 100;
 374                 ft2232_buffer_size = 0;
 375
 376 #ifdef _DEBUG_USB_IO_
 377                 gettimeofday(&inter2, NULL);
 378 #endif
 379
 380                 if ((retval = ft2232_read(ft2232_buffer, ft2232_expect_read, &bytes_read)) != ERROR_OK)
 381                 {
 382                         LOG_ERROR("couldn't read from FT2232");
 383                         exit(-1);
 384                 }
 385
 386 #ifdef _DEBUG_USB_IO_
 387                 gettimeofday(&end, NULL);
 388
 389                 timeval_subtract(&d_inter, &inter, &start);
 390                 timeval_subtract(&d_inter2, &inter2, &start);
 391                 timeval_subtract(&d_end, &end, &start);
 392
 393                 LOG_INFO("inter: %i.%i, inter2: %i.%i end: %i.%i", d_inter.tv_sec, d_inter.tv_usec, d_inter2.tv_sec, d_inter2.tv_usec, d_end.tv_sec, d_end.tv_usec);
 394 #endif
 395
 396
 397                 ft2232_buffer_size = bytes_read;
 398
 399                 if (ft2232_expect_read != ft2232_buffer_size)
 400                 {
 401                         LOG_ERROR("ft2232_expect_read (%i) != ft2232_buffer_size (%i) (%i retries)", ft2232_expect_read, ft2232_buffer_size, 100 - timeout);
 402                         ft2232_debug_dump_buffer();
 403
 404                         exit(-1);
 405                 }
 406
 407 #ifdef _DEBUG_USB_COMMS_
 408                 LOG_DEBUG("read buffer (%i retries): %i bytes", 100 - timeout, ft2232_buffer_size);
 409                 ft2232_debug_dump_buffer();
 410 #endif
 411         }
 412
 413         ft2232_expect_read = 0;
 414         ft2232_read_pointer = 0;
 415
 416         /* return ERROR_OK, unless a jtag_read_buffer returns a failed check
 417          * that wasn't handled by a caller-provided error handler
 418          */
 419         retval = ERROR_OK;
 420
 421         cmd = first;
 422         while (cmd != last)
 423         {
 424                 switch (cmd->type)
 425                 {
 426                         case JTAG_SCAN:
 427                                 type = jtag_scan_type(cmd->cmd.scan);
 428                                 if (type != SCAN_OUT)
 429                                 {
 430                                         scan_size = jtag_scan_size(cmd->cmd.scan);
 431                                         buffer = calloc(CEIL(scan_size, 8), 1);
 432                                         ft2232_read_scan(type, buffer, scan_size);
 433                                         if (jtag_read_buffer(buffer, cmd->cmd.scan) != ERROR_OK)
 434                                                 retval = ERROR_JTAG_QUEUE_FAILED;
 435                                         free(buffer);
 436                                 }
 437                                 break;
 438                         default:
 439                                 break;
 440                 }
 441                 cmd = cmd->next;
 442         }
 443
 444         ft2232_buffer_size = 0;
 445
 446         return retval;
 447 }
 448
 449 void ft2232_add_pathmove(pathmove_command_t *cmd)
 450 {
 451         int num_states = cmd->num_states;
 452         u8 tms_byte;
 453         int state_count;
 454
 455         state_count = 0;
 456         while (num_states)
 457         {
 458                 tms_byte = 0x0;
 459                 int bit_count = 0;
 460
 461                 int num_states_batch = num_states > 7 ? 7 : num_states;
 462
 463                 /* command "Clock Data to TMS/CS Pin (no Read)" */
 464                 BUFFER_ADD = 0x4b;
 465                 /* number of states remaining */
 466                 BUFFER_ADD = num_states_batch - 1;
 467
 468                 while (num_states_batch--)
 469                 {
 470                         if (tap_transitions[cur_state].low == cmd->path[state_count])
 471                                 buf_set_u32(&tms_byte, bit_count++, 1, 0x0);
 472                         else if (tap_transitions[cur_state].high == cmd->path[state_count])
 473                                 buf_set_u32(&tms_byte, bit_count++, 1, 0x1);
 474                         else
 475                         {
 476                                 LOG_ERROR("BUG: %s -> %s isn't a valid TAP transition", tap_state_strings[cur_state], tap_state_strings[cmd->path[state_count]]);
 477                                 exit(-1);
 478                         }
 479
 480                         cur_state = cmd->path[state_count];
 481                         state_count++;
 482                         num_states--;
 483                 }
 484
 485                 BUFFER_ADD = tms_byte;
 486         }
 487
 488         end_state = cur_state;
 489 }
 490
 491 void ft2232_add_scan(int ir_scan, enum scan_type type, u8 *buffer, int scan_size)
 492 {
 493         int num_bytes = (scan_size + 7) / 8;
 494         int bits_left = scan_size;
 495         int cur_byte = 0;
 496         int last_bit;
 497
 498         if (!((!ir_scan && (cur_state == TAP_SD)) || (ir_scan && (cur_state == TAP_SI))))
 499         {
 500                 /* command "Clock Data to TMS/CS Pin (no Read)" */
 501                 BUFFER_ADD = 0x4b;
 502                 /* scan 7 bit */
 503                 BUFFER_ADD = 0x6;
 504                 /* TMS data bits */
 505                 if (ir_scan)
 506                 {
 507                         BUFFER_ADD = TAP_MOVE(cur_state, TAP_SI);
 508                         cur_state = TAP_SI;
 509                 }
 510                 else
 511                 {
 512                         BUFFER_ADD = TAP_MOVE(cur_state, TAP_SD);
 513                         cur_state = TAP_SD;
 514                 }
 515                 /* LOG_DEBUG("added TMS scan (no read)"); */
 516         }
 517
 518         /* add command for complete bytes */
 519         while (num_bytes > 1)
 520         {
 521                 int thisrun_bytes;
 522                 if (type == SCAN_IO)
 523                 {
 524                         /* Clock Data Bytes In and Out LSB First */
 525                         BUFFER_ADD = 0x39;
 526                         /* LOG_DEBUG("added TDI bytes (io %i)", num_bytes); */
 527                 }
 528                 else if (type == SCAN_OUT)
 529                 {
 530                         /* Clock Data Bytes Out on -ve Clock Edge LSB First (no Read) */
 531                         BUFFER_ADD = 0x19;
 532                         /* LOG_DEBUG("added TDI bytes (o)"); */
 533                 }
 534                 else if (type == SCAN_IN)
 535                 {
 536                         /* Clock Data Bytes In on +ve Clock Edge LSB First (no Write) */
 537                         BUFFER_ADD = 0x28;
 538                         /* LOG_DEBUG("added TDI bytes (i %i)", num_bytes); */
 539                 }
 540                 thisrun_bytes = (num_bytes > 65537) ? 65536 : (num_bytes - 1);
 541                 num_bytes -= thisrun_bytes;
 542                 BUFFER_ADD = (thisrun_bytes - 1) & 0xff;
 543                 BUFFER_ADD = ((thisrun_bytes - 1) >> 8) & 0xff;
 544                 if (type != SCAN_IN)
 545                 {
 546                         /* add complete bytes */
 547                         while(thisrun_bytes-- > 0)
 548                         {
 549                                 BUFFER_ADD = buffer[cur_byte];
 550                                 cur_byte++;
 551                                 bits_left -= 8;
 552                         }
 553                 }
 554                 else /* (type == SCAN_IN) */
 555                 {
 556                         bits_left -= 8 * (thisrun_bytes);
 557                 }
 558         }
 559
 560         /* the most signifcant bit is scanned during TAP movement */
 561         if (type != SCAN_IN)
 562                 last_bit = (buffer[cur_byte] >> (bits_left - 1)) & 0x1;
 563         else
 564                 last_bit = 0;
 565
 566         /* process remaining bits but the last one */
 567         if (bits_left > 1)
 568         {
 569                 if (type == SCAN_IO)
 570                 {
 571                         /* Clock Data Bits In and Out LSB First */
 572                         BUFFER_ADD = 0x3b;
 573                         /* LOG_DEBUG("added TDI bits (io) %i", bits_left - 1); */
 574                 }
 575                 else if (type == SCAN_OUT)
 576                 {
 577                         /* Clock Data Bits Out on -ve Clock Edge LSB First (no Read) */
 578                         BUFFER_ADD = 0x1b;
 579                         /* LOG_DEBUG("added TDI bits (o)"); */
 580                 }
 581                 else if (type == SCAN_IN)
 582                 {
 583                         /* Clock Data Bits In on +ve Clock Edge LSB First (no Write) */
 584                         BUFFER_ADD = 0x2a;
 585                         /* LOG_DEBUG("added TDI bits (i %i)", bits_left - 1); */
 586                 }
 587                 BUFFER_ADD = bits_left - 2;
 588                 if (type != SCAN_IN)
 589                         BUFFER_ADD = buffer[cur_byte];
 590         }
 591
 592         if ((ir_scan && (end_state == TAP_SI)) ||
 593                 (!ir_scan && (end_state == TAP_SD)))
 594         {
 595                 if (type == SCAN_IO)
 596                 {
 597                         /* Clock Data Bits In and Out LSB First */
 598                         BUFFER_ADD = 0x3b;
 599                         /* LOG_DEBUG("added TDI bits (io) %i", bits_left - 1); */
 600                 }
 601                 else if (type == SCAN_OUT)
 602                 {
 603                         /* Clock Data Bits Out on -ve Clock Edge LSB First (no Read) */
 604                         BUFFER_ADD = 0x1b;
 605                         /* LOG_DEBUG("added TDI bits (o)"); */
 606                 }
 607                 else if (type == SCAN_IN)
 608                 {
 609                         /* Clock Data Bits In on +ve Clock Edge LSB First (no Write) */
 610                         BUFFER_ADD = 0x2a;
 611                         /* LOG_DEBUG("added TDI bits (i %i)", bits_left - 1); */
 612                 }
 613                 BUFFER_ADD = 0x0;
 614                 BUFFER_ADD = last_bit;
 615         }
 616         else
 617         {
 618                 /* move from Shift-IR/DR to end state */
 619                 if (type != SCAN_OUT)
 620                 {
 621                         /* Clock Data to TMS/CS Pin with Read */
 622                         BUFFER_ADD = 0x6b;
 623                         /* LOG_DEBUG("added TMS scan (read)"); */
 624                 }
 625                 else
 626                 {
 627                         /* Clock Data to TMS/CS Pin (no Read) */
 628                         BUFFER_ADD = 0x4b;
 629                         /* LOG_DEBUG("added TMS scan (no read)"); */
 630                 }
 631                 BUFFER_ADD = 0x6;
 632                 BUFFER_ADD = TAP_MOVE(cur_state, end_state) | (last_bit << 7);
 633                 cur_state = end_state;
 634         }
 635 }
 636
 637 int ft2232_large_scan(scan_command_t *cmd, enum scan_type type, u8 *buffer, int scan_size)
 638 {
 639         int num_bytes = (scan_size + 7) / 8;
 640         int bits_left = scan_size;
 641         int cur_byte = 0;
 642         int last_bit;
 643         u8 *receive_buffer = malloc(CEIL(scan_size, 8));
 644         u8 *receive_pointer = receive_buffer;
 645         u32 bytes_written;
 646         u32 bytes_read;
 647         int retval;
 648         int thisrun_read = 0;
 649
 650         if (cmd->ir_scan)
 651         {
 652                 LOG_ERROR("BUG: large IR scans are not supported");
 653                 exit(-1);
 654         }
 655
 656         if (cur_state != TAP_SD)
 657         {
 658                 /* command "Clock Data to TMS/CS Pin (no Read)" */
 659                 BUFFER_ADD = 0x4b;
 660                 /* scan 7 bit */
 661                 BUFFER_ADD = 0x6;
 662                 /* TMS data bits */
 663                 BUFFER_ADD = TAP_MOVE(cur_state, TAP_SD);
 664                 cur_state = TAP_SD;
 665         }
 666
 667         if ((retval = ft2232_write(ft2232_buffer, ft2232_buffer_size, &bytes_written)) != ERROR_OK)
 668         {
 669                 LOG_ERROR("couldn't write MPSSE commands to FT2232");
 670                 exit(-1);
 671         }
 672         LOG_DEBUG("ft2232_buffer_size: %i, bytes_written: %i", ft2232_buffer_size, bytes_written);
 673         ft2232_buffer_size = 0;
 674
 675         /* add command for complete bytes */
 676         while (num_bytes > 1)
 677         {
 678                 int thisrun_bytes;
 679
 680                 if (type == SCAN_IO)
 681                 {
 682                         /* Clock Data Bytes In and Out LSB First */
 683                         BUFFER_ADD = 0x39;
 684                         /* LOG_DEBUG("added TDI bytes (io %i)", num_bytes); */
 685                 }
 686                 else if (type == SCAN_OUT)
 687                 {
 688                         /* Clock Data Bytes Out on -ve Clock Edge LSB First (no Read) */
 689                         BUFFER_ADD = 0x19;
 690                         /* LOG_DEBUG("added TDI bytes (o)"); */
 691                 }
 692                 else if (type == SCAN_IN)
 693                 {
 694                         /* Clock Data Bytes In on +ve Clock Edge LSB First (no Write) */
 695                         BUFFER_ADD = 0x28;
 696                         /* LOG_DEBUG("added TDI bytes (i %i)", num_bytes); */
 697                 }
 698                 thisrun_bytes = (num_bytes > 65537) ? 65536 : (num_bytes - 1);
 699                 thisrun_read = thisrun_bytes;
 700                 num_bytes -= thisrun_bytes;
 701                 BUFFER_ADD = (thisrun_bytes - 1) & 0xff;
 702                 BUFFER_ADD = ((thisrun_bytes - 1) >> 8) & 0xff;
 703                 if (type != SCAN_IN)
 704                 {
 705                         /* add complete bytes */
 706                         while(thisrun_bytes-- > 0)
 707                         {
 708                                 BUFFER_ADD = buffer[cur_byte];
 709                                 cur_byte++;
 710                                 bits_left -= 8;
 711                         }
 712                 }
 713                 else /* (type == SCAN_IN) */
 714                 {
 715                         bits_left -= 8 * (thisrun_bytes);
 716                 }
 717
 718                 if ((retval = ft2232_write(ft2232_buffer, ft2232_buffer_size, &bytes_written)) != ERROR_OK)
 719                 {
 720                         LOG_ERROR("couldn't write MPSSE commands to FT2232");
 721                         exit(-1);
 722                 }
 723                 LOG_DEBUG("ft2232_buffer_size: %i, bytes_written: %i", ft2232_buffer_size, bytes_written);
 724                 ft2232_buffer_size = 0;
 725
 726                 if (type != SCAN_OUT)
 727                 {
 728                         if ((retval = ft2232_read(receive_pointer, thisrun_read, &bytes_read)) != ERROR_OK)
 729                         {
 730                                 LOG_ERROR("couldn't read from FT2232");
 731                                 exit(-1);
 732                         }
 733                         LOG_DEBUG("thisrun_read: %i, bytes_read: %i", thisrun_read, bytes_read);
 734                         receive_pointer += bytes_read;
 735                 }
 736         }
 737
 738         thisrun_read = 0;
 739
 740         /* the most signifcant bit is scanned during TAP movement */
 741         if (type != SCAN_IN)
 742                 last_bit = (buffer[cur_byte] >> (bits_left - 1)) & 0x1;
 743         else
 744                 last_bit = 0;
 745
 746         /* process remaining bits but the last one */
 747         if (bits_left > 1)
 748         {
 749                 if (type == SCAN_IO)
 750                 {
 751                         /* Clock Data Bits In and Out LSB First */
 752                         BUFFER_ADD = 0x3b;
 753                         /* LOG_DEBUG("added TDI bits (io) %i", bits_left - 1); */
 754                 }
 755                 else if (type == SCAN_OUT)
 756                 {
 757                         /* Clock Data Bits Out on -ve Clock Edge LSB First (no Read) */
 758                         BUFFER_ADD = 0x1b;
 759                         /* LOG_DEBUG("added TDI bits (o)"); */
 760                 }
 761                 else if (type == SCAN_IN)
 762                 {
 763                         /* Clock Data Bits In on +ve Clock Edge LSB First (no Write) */
 764                         BUFFER_ADD = 0x2a;
 765                         /* LOG_DEBUG("added TDI bits (i %i)", bits_left - 1); */
 766                 }
 767                 BUFFER_ADD = bits_left - 2;
 768                 if (type != SCAN_IN)
 769                         BUFFER_ADD = buffer[cur_byte];
 770
 771                 if (type != SCAN_OUT)
 772                         thisrun_read += 2;
 773         }
 774
 775         if (end_state == TAP_SD)
 776         {
 777                 if (type == SCAN_IO)
 778                 {
 779                         /* Clock Data Bits In and Out LSB First */
 780                         BUFFER_ADD = 0x3b;
 781                         /* LOG_DEBUG("added TDI bits (io) %i", bits_left - 1); */
 782                 }
 783                 else if (type == SCAN_OUT)
 784                 {
 785                         /* Clock Data Bits Out on -ve Clock Edge LSB First (no Read) */
 786                         BUFFER_ADD = 0x1b;
 787                         /* LOG_DEBUG("added TDI bits (o)"); */
 788                 }
 789                 else if (type == SCAN_IN)
 790                 {
 791                         /* Clock Data Bits In on +ve Clock Edge LSB First (no Write) */
 792                         BUFFER_ADD = 0x2a;
 793                         /* LOG_DEBUG("added TDI bits (i %i)", bits_left - 1); */
 794                 }
 795                 BUFFER_ADD = 0x0;
 796                 BUFFER_ADD = last_bit;
 797         }
 798         else
 799         {
 800                 /* move from Shift-IR/DR to end state */
 801                 if (type != SCAN_OUT)
 802                 {
 803                         /* Clock Data to TMS/CS Pin with Read */
 804                         BUFFER_ADD = 0x6b;
 805                         /* LOG_DEBUG("added TMS scan (read)"); */
 806                 }
 807                 else
 808                 {
 809                         /* Clock Data to TMS/CS Pin (no Read) */
 810                         BUFFER_ADD = 0x4b;
 811                         /* LOG_DEBUG("added TMS scan (no read)"); */
 812                 }
 813                 BUFFER_ADD = 0x6;
 814                 BUFFER_ADD = TAP_MOVE(cur_state, end_state) | (last_bit << 7);
 815                 cur_state = end_state;
 816         }
 817
 818         if (type != SCAN_OUT)
 819                 thisrun_read += 1;
 820
 821         if ((retval = ft2232_write(ft2232_buffer, ft2232_buffer_size, &bytes_written)) != ERROR_OK)
 822         {
 823                 LOG_ERROR("couldn't write MPSSE commands to FT2232");
 824                 exit(-1);
 825         }
 826         LOG_DEBUG("ft2232_buffer_size: %i, bytes_written: %i", ft2232_buffer_size, bytes_written);
 827         ft2232_buffer_size = 0;
 828
 829         if (type != SCAN_OUT)
 830         {
 831                 if ((retval = ft2232_read(receive_pointer, thisrun_read, &bytes_read)) != ERROR_OK)
 832                 {
 833                         LOG_ERROR("couldn't read from FT2232");
 834                         exit(-1);
 835                 }
 836                 LOG_DEBUG("thisrun_read: %i, bytes_read: %i", thisrun_read, bytes_read);
 837                 receive_pointer += bytes_read;
 838         }
 839
 840         return ERROR_OK;
 841 }
 842
 843 int ft2232_predict_scan_out(int scan_size, enum scan_type type)
 844 {
 845         int predicted_size = 3;
 846         int num_bytes = (scan_size - 1) / 8;
 847
 848         if (cur_state != TAP_SD)
 849                 predicted_size += 3;
 850
 851         if (type == SCAN_IN)    /* only from device to host */
 852         {
 853                 /* complete bytes */
 854                 predicted_size += (CEIL(num_bytes, 65536)) * 3;
 855                 /* remaining bits - 1 (up to 7) */
 856                 predicted_size += ((scan_size - 1) % 8) ? 2 : 0;
 857         }
 858         else                                    /* host to device, or bidirectional */
 859         {
 860                 /* complete bytes */
 861                 predicted_size += num_bytes + (CEIL(num_bytes, 65536)) * 3;
 862                 /* remaining bits -1 (up to 7) */
 863                 predicted_size += ((scan_size - 1) % 8) ? 3 : 0;
 864         }
 865
 866         return predicted_size;
 867 }
 868
 869 int ft2232_predict_scan_in(int scan_size, enum scan_type type)
 870 {
 871         int predicted_size = 0;
 872
 873         if (type != SCAN_OUT)
 874         {
 875                 /* complete bytes */
 876                 predicted_size += (CEIL(scan_size, 8) > 1) ? (CEIL(scan_size, 8) - 1) : 0;
 877                 /* remaining bits - 1 */
 878                 predicted_size += ((scan_size - 1) % 8) ? 1 : 0;
 879                 /* last bit (from TMS scan) */
 880                 predicted_size += 1;
 881         }
 882
 883         /* LOG_DEBUG("scan_size: %i, predicted_size: %i", scan_size, predicted_size); */
 884
 885         return predicted_size;
 886 }
 887
 888 void usbjtag_reset(int trst, int srst)
 889 {
 890         if (trst == 1)
 891         {
 892                 if (jtag_reset_config & RESET_TRST_OPEN_DRAIN)
 893                         low_direction |= nTRSTnOE;      /* switch to output pin (output is low) */
 894                 else
 895                         low_output &= ~nTRST;   /* switch output low */
 896         }
 897         else if (trst == 0)
 898         {
 899                 if (jtag_reset_config & RESET_TRST_OPEN_DRAIN)
 900                         low_direction &= ~nTRSTnOE; /* switch to input pin (high-Z + internal and external pullup) */
 901                 else
 902                         low_output |= nTRST; /* switch output high */
 903         }
 904
 905         if (srst == 1)
 906         {
 907                 if (jtag_reset_config & RESET_SRST_PUSH_PULL)
 908                         low_output &= ~nSRST;   /* switch output low */
 909                 else
 910                         low_direction |= nSRSTnOE;      /* switch to output pin (output is low) */
 911         }
 912         else if (srst == 0)
 913         {
 914                 if (jtag_reset_config & RESET_SRST_PUSH_PULL)
 915                         low_output |= nSRST;    /* switch output high */
 916                 else
 917                         low_direction &= ~nSRSTnOE;     /* switch to input pin (high-Z) */
 918         }
 919
 920         /* command "set data bits low byte" */
 921         BUFFER_ADD = 0x80;
 922         BUFFER_ADD = low_output;
 923         BUFFER_ADD = low_direction;
 924
 925 }
 926
 927 void jtagkey_reset(int trst, int srst)
 928 {
 929         if (trst == 1)
 930         {
 931                 if (jtag_reset_config & RESET_TRST_OPEN_DRAIN)
 932                         high_output &= ~nTRSTnOE;
 933                 else
 934                         high_output &= ~nTRST;
 935         }
 936         else if (trst == 0)
 937         {
 938                 if (jtag_reset_config & RESET_TRST_OPEN_DRAIN)
 939                         high_output |= nTRSTnOE;
 940                 else
 941                         high_output |= nTRST;
 942         }
 943
 944         if (srst == 1)
 945         {
 946                 if (jtag_reset_config & RESET_SRST_PUSH_PULL)
 947                         high_output &= ~nSRST;
 948                 else
 949                         high_output &= ~nSRSTnOE;
 950         }
 951         else if (srst == 0)
 952         {
 953                 if (jtag_reset_config & RESET_SRST_PUSH_PULL)
 954                         high_output |= nSRST;
 955                 else
 956                         high_output |= nSRSTnOE;
 957         }
 958
 959         /* command "set data bits high byte" */
 960         BUFFER_ADD = 0x82;
 961         BUFFER_ADD = high_output;
 962         BUFFER_ADD = high_direction;
 963         LOG_DEBUG("trst: %i, srst: %i, high_output: 0x%2.2x, high_direction: 0x%2.2x", trst, srst, high_output, high_direction);
 964 }
 965
 966 void olimex_jtag_reset(int trst, int srst)
 967 {
 968         if (trst == 1)
 969         {
 970                 if (jtag_reset_config & RESET_TRST_OPEN_DRAIN)
 971                         high_output &= ~nTRSTnOE;
 972                 else
 973                         high_output &= ~nTRST;
 974         }
 975         else if (trst == 0)
 976         {
 977                 if (jtag_reset_config & RESET_TRST_OPEN_DRAIN)
 978                         high_output |= nTRSTnOE;
 979                 else
 980                         high_output |= nTRST;
 981         }
 982
 983     if (srst == 1)
 984     {
 985         high_output |= nSRST;
 986     }
 987     else if (srst == 0)
 988     {
 989         high_output &= ~nSRST;
 990     }
 991
 992     /* command "set data bits high byte" */
 993     BUFFER_ADD = 0x82;
 994     BUFFER_ADD = high_output;
 995     BUFFER_ADD = high_direction;
 996     LOG_DEBUG("trst: %i, srst: %i, high_output: 0x%2.2x, high_direction: 0x%2.2x", trst, srst, high_output, high_direction);
 997 }
 998
 999 void flyswatter_reset(int trst, int srst)
1000 {
1001         if (trst == 1)
1002         {
1003                 low_output &= ~nTRST;
1004         }
1005         else if (trst == 0)
1006         {
1007                 low_output |= nTRST;
1008         }
1009
1010     if (srst == 1)
1011     {
1012         low_output |= nSRST;
1013     }
1014     else if (srst == 0)
1015     {
1016         low_output &= ~nSRST;
1017     }
1018
1019     /* command "set data bits low byte" */
1020     BUFFER_ADD = 0x80;
1021     BUFFER_ADD = low_output;
1022     BUFFER_ADD = low_direction;
1023     LOG_DEBUG("trst: %i, srst: %i, low_output: 0x%2.2x, low_direction: 0x%2.2x", trst, srst, low_output, low_direction);
1024 }
1025
1026 void turtle_reset(int trst, int srst)
1027 {
1028         trst = trst;
1029
1030         if (srst == 1)
1031         {
1032                 low_output |= nSRST;
1033         }
1034         else if (srst == 0)
1035         {
1036                 low_output &= ~nSRST;
1037         }
1038
1039         /* command "set data bits low byte" */
1040         BUFFER_ADD = 0x80;
1041         BUFFER_ADD = low_output;
1042         BUFFER_ADD = low_direction;
1043         LOG_DEBUG("srst: %i, low_output: 0x%2.2x, low_direction: 0x%2.2x", srst, low_output, low_direction);
1044 }
1045
1046 void comstick_reset(int trst, int srst)
1047 {
1048         if (trst == 1)
1049         {
1050                 high_output &= ~nTRST;
1051         }
1052         else if (trst == 0)
1053         {
1054                 high_output |= nTRST;
1055         }
1056
1057     if (srst == 1)
1058     {
1059         high_output &= ~nSRST;
1060     }
1061     else if (srst == 0)
1062     {
1063         high_output |= nSRST;
1064     }
1065
1066         /* command "set data bits high byte" */
1067         BUFFER_ADD = 0x82;
1068         BUFFER_ADD = high_output;
1069         BUFFER_ADD = high_direction;
1070         LOG_DEBUG("trst: %i, srst: %i, high_output: 0x%2.2x, high_direction: 0x%2.2x", trst, srst, high_output, high_direction);
1071 }
1072
1073 void stm32stick_reset(int trst, int srst)
1074 {
1075         if (trst == 1)
1076         {
1077                 high_output &= ~nTRST;
1078         }
1079         else if (trst == 0)
1080         {
1081                 high_output |= nTRST;
1082         }
1083
1084     if (srst == 1)
1085     {
1086         low_output &= ~nSRST;
1087     }
1088     else if (srst == 0)
1089     {
1090         low_output |= nSRST;
1091     }
1092
1093         /* command "set data bits low byte" */
1094         BUFFER_ADD = 0x80;
1095         BUFFER_ADD = low_output;
1096         BUFFER_ADD = low_direction;
1097
1098         /* command "set data bits high byte" */
1099         BUFFER_ADD = 0x82;
1100         BUFFER_ADD = high_output;
1101         BUFFER_ADD = high_direction;
1102         LOG_DEBUG("trst: %i, srst: %i, high_output: 0x%2.2x, high_direction: 0x%2.2x", trst, srst, high_output, high_direction);
1103 }
1104
1105 int ft2232_execute_queue()
1106 {
1107         jtag_command_t *cmd = jtag_command_queue; /* currently processed command */
1108         jtag_command_t *first_unsent = cmd;     /* next command that has to be sent */
1109         u8 *buffer;
1110         int scan_size;  /* size of IR or DR scan */
1111         enum scan_type type;
1112         int i;
1113         int predicted_size = 0;
1114         int require_send = 0;
1115         int retval;
1116
1117         /* return ERROR_OK, unless ft2232_send_and_recv reports a failed check
1118          * that wasn't handled by a caller-provided error handler
1119          */
1120         retval = ERROR_OK;
1121
1122         ft2232_buffer_size = 0;
1123         ft2232_expect_read = 0;
1124
1125         /* blink, if the current layout has that feature */
1126         if (layout->blink)
1127                 layout->blink();
1128
1129         while (cmd)
1130         {
1131                 switch(cmd->type)
1132                 {
1133                         case JTAG_END_STATE:
1134                                 if (cmd->cmd.end_state->end_state != -1)
1135                                         ft2232_end_state(cmd->cmd.end_state->end_state);
1136                                 break;
1137                         case JTAG_RESET:
1138                                 /* only send the maximum buffer size that FT2232C can handle */
1139                                 predicted_size = 3;
1140                                 if (ft2232_buffer_size + predicted_size + 1 > FT2232_BUFFER_SIZE)
1141                                 {
1142                                         if (ft2232_send_and_recv(first_unsent, cmd) != ERROR_OK)
1143                                                 retval = ERROR_JTAG_QUEUE_FAILED;
1144                                         require_send = 0;
1145                                         first_unsent = cmd;
1146                                 }
1147
1148                                 if ((cmd->cmd.reset->trst == 1) || (cmd->cmd.reset->srst && (jtag_reset_config & RESET_SRST_PULLS_TRST)))
1149                                 {
1150                                         cur_state = TAP_TLR;
1151                                 }
1152                                 layout->reset(cmd->cmd.reset->trst, cmd->cmd.reset->srst);
1153                                 require_send = 1;
1154
1155 #ifdef _DEBUG_JTAG_IO_
1156                                 LOG_DEBUG("trst: %i, srst: %i", cmd->cmd.reset->trst, cmd->cmd.reset->srst);
1157 #endif
1158                                 break;
1159                         case JTAG_RUNTEST:
1160                                 /* only send the maximum buffer size that FT2232C can handle */
1161                                 predicted_size = 0;
1162                                 if (cur_state != TAP_RTI)
1163                                         predicted_size += 3;
1164                                 predicted_size += 3 * CEIL(cmd->cmd.runtest->num_cycles, 7);
1165                                 if ((cmd->cmd.runtest->end_state != -1) && (cmd->cmd.runtest->end_state != TAP_RTI))
1166                                         predicted_size += 3;
1167                                 if ((cmd->cmd.runtest->end_state == -1) && (end_state != TAP_RTI))
1168                                         predicted_size += 3;
1169                                 if (ft2232_buffer_size + predicted_size + 1 > FT2232_BUFFER_SIZE)
1170                                 {
1171                                         if (ft2232_send_and_recv(first_unsent, cmd) != ERROR_OK)
1172                                                 retval = ERROR_JTAG_QUEUE_FAILED;
1173                                         require_send = 0;
1174                                         first_unsent = cmd;
1175                                 }
1176                                 if (cur_state != TAP_RTI)
1177                                 {
1178                                         /* command "Clock Data to TMS/CS Pin (no Read)" */
1179                                         BUFFER_ADD = 0x4b;
1180                                         /* scan 7 bit */
1181                                         BUFFER_ADD = 0x6;
1182                                         /* TMS data bits */
1183                                         BUFFER_ADD = TAP_MOVE(cur_state, TAP_RTI);
1184                                         cur_state = TAP_RTI;
1185                                         require_send = 1;
1186                                 }
1187                                 i = cmd->cmd.runtest->num_cycles;
1188                                 while (i > 0)
1189                                 {
1190                                         /* command "Clock Data to TMS/CS Pin (no Read)" */
1191                                         BUFFER_ADD = 0x4b;
1192                                         /* scan 7 bit */
1193                                         BUFFER_ADD = (i > 7) ? 6 : (i - 1);
1194                                         /* TMS data bits */
1195                                         BUFFER_ADD = 0x0;
1196                                         cur_state = TAP_RTI;
1197                                         i -= (i > 7) ? 7 : i;
1198                                         /* LOG_DEBUG("added TMS scan (no read)"); */
1199                                 }
1200                                 if (cmd->cmd.runtest->end_state != -1)
1201                                         ft2232_end_state(cmd->cmd.runtest->end_state);
1202                                 if (cur_state != end_state)
1203                                 {
1204                                         /* command "Clock Data to TMS/CS Pin (no Read)" */
1205                                         BUFFER_ADD = 0x4b;
1206                                         /* scan 7 bit */
1207                                         BUFFER_ADD = 0x6;
1208                                         /* TMS data bits */
1209                                         BUFFER_ADD = TAP_MOVE(cur_state, end_state);
1210                                         cur_state = end_state;
1211                                         /* LOG_DEBUG("added TMS scan (no read)"); */
1212                                 }
1213                                 require_send = 1;
1214 #ifdef _DEBUG_JTAG_IO_
1215                                 LOG_DEBUG("runtest: %i, end in %i", cmd->cmd.runtest->num_cycles, end_state);
1216 #endif
1217                                 break;
1218                         case JTAG_STATEMOVE:
1219                                 /* only send the maximum buffer size that FT2232C can handle */
1220                                 predicted_size = 3;
1221                                 if (ft2232_buffer_size + predicted_size + 1 > FT2232_BUFFER_SIZE)
1222                                 {
1223                                         if (ft2232_send_and_recv(first_unsent, cmd) != ERROR_OK)
1224                                                 retval = ERROR_JTAG_QUEUE_FAILED;
1225                                         require_send = 0;
1226                                         first_unsent = cmd;
1227                                 }
1228                                 if (cmd->cmd.statemove->end_state != -1)
1229                                         ft2232_end_state(cmd->cmd.statemove->end_state);
1230                                 /* command "Clock Data to TMS/CS Pin (no Read)" */
1231                                 BUFFER_ADD = 0x4b;
1232                                 /* scan 7 bit */
1233                                 BUFFER_ADD = 0x6;
1234                                 /* TMS data bits */
1235                                 BUFFER_ADD = TAP_MOVE(cur_state, end_state);
1236                                 /* LOG_DEBUG("added TMS scan (no read)"); */
1237                                 cur_state = end_state;
1238                                 require_send = 1;
1239 #ifdef _DEBUG_JTAG_IO_
1240                                 LOG_DEBUG("statemove: %i", end_state);
1241 #endif
1242                                 break;
1243                         case JTAG_PATHMOVE:
1244                                 /* only send the maximum buffer size that FT2232C can handle */
1245                                 predicted_size = 3 * CEIL(cmd->cmd.pathmove->num_states, 7);
1246                                 if (ft2232_buffer_size + predicted_size + 1 > FT2232_BUFFER_SIZE)
1247                                 {
1248                                         if (ft2232_send_and_recv(first_unsent, cmd) != ERROR_OK)
1249                                                 retval = ERROR_JTAG_QUEUE_FAILED;
1250                                         require_send = 0;
1251                                         first_unsent = cmd;
1252                                 }
1253                                 ft2232_add_pathmove(cmd->cmd.pathmove);
1254                                 require_send = 1;
1255 #ifdef _DEBUG_JTAG_IO_
1256                                 LOG_DEBUG("pathmove: %i states, end in %i", cmd->cmd.pathmove->num_states, cmd->cmd.pathmove->path[cmd->cmd.pathmove->num_states - 1]);
1257 #endif
1258                                 break;
1259                         case JTAG_SCAN:
1260                                 scan_size = jtag_build_buffer(cmd->cmd.scan, &buffer);
1261                                 type = jtag_scan_type(cmd->cmd.scan);
1262                                 predicted_size = ft2232_predict_scan_out(scan_size, type);
1263                                 if ((predicted_size + 1) > FT2232_BUFFER_SIZE)
1264                                 {
1265                                         LOG_DEBUG("oversized ft2232 scan (predicted_size > FT2232_BUFFER_SIZE)");
1266                                         /* unsent commands before this */
1267                                         if (first_unsent != cmd)
1268                                                 if (ft2232_send_and_recv(first_unsent, cmd) != ERROR_OK)
1269                                                         retval = ERROR_JTAG_QUEUE_FAILED;
1270
1271                                         /* current command */
1272                                         if (cmd->cmd.scan->end_state != -1)
1273                                                 ft2232_end_state(cmd->cmd.scan->end_state);
1274                                         ft2232_large_scan(cmd->cmd.scan, type, buffer, scan_size);
1275                                         require_send = 0;
1276                                         first_unsent = cmd->next;
1277                                         if (buffer)
1278                                                 free(buffer);
1279                                         break;
1280                                 }
1281                                 else if (ft2232_buffer_size + predicted_size + 1 > FT2232_BUFFER_SIZE)
1282                                 {
1283                                         LOG_DEBUG("ft2232 buffer size reached, sending queued commands (first_unsent: %p, cmd: %p)", first_unsent, cmd);
1284                                         if (ft2232_send_and_recv(first_unsent, cmd) != ERROR_OK)
1285                                                 retval = ERROR_JTAG_QUEUE_FAILED;
1286                                         require_send = 0;
1287                                         first_unsent = cmd;
1288                                 }
1289                                 ft2232_expect_read += ft2232_predict_scan_in(scan_size, type);
1290                                 /* LOG_DEBUG("new read size: %i", ft2232_expect_read); */
1291                                 if (cmd->cmd.scan->end_state != -1)
1292                                         ft2232_end_state(cmd->cmd.scan->end_state);
1293                                 ft2232_add_scan(cmd->cmd.scan->ir_scan, type, buffer, scan_size);
1294                                 require_send = 1;
1295                                 if (buffer)
1296                                         free(buffer);
1297 #ifdef _DEBUG_JTAG_IO_
1298                                 LOG_DEBUG("%s scan, %i bit, end in %i", (cmd->cmd.scan->ir_scan) ? "IR" : "DR", scan_size, end_state);
1299 #endif
1300                                 break;
1301                         case JTAG_SLEEP:
1302                                 if (ft2232_send_and_recv(first_unsent, cmd) != ERROR_OK)
1303                                         retval = ERROR_JTAG_QUEUE_FAILED;
1304                                 first_unsent = cmd->next;
1305                                 jtag_sleep(cmd->cmd.sleep->us);
1306 #ifdef _DEBUG_JTAG_IO_
1307                                 LOG_DEBUG("sleep %i usec", cmd->cmd.sleep->us);
1308 #endif
1309                                 break;
1310                         default:
1311                                 LOG_ERROR("BUG: unknown JTAG command type encountered");
1312                                 exit(-1);
1313                 }
1314                 cmd = cmd->next;
1315         }
1316
1317         if (require_send > 0)
1318                 if (ft2232_send_and_recv(first_unsent, cmd) != ERROR_OK)
1319                         retval = ERROR_JTAG_QUEUE_FAILED;
1320
1321         return retval;
1322 }
1323
1324 #if BUILD_FT2232_FTD2XX == 1
1325 static int ft2232_init_ftd2xx(u16 vid, u16 pid, int more, int *try_more)
1326 {
1327         FT_STATUS status;
1328         DWORD openex_flags = 0;
1329         char *openex_string = NULL;
1330         u8 latency_timer;
1331
1332         LOG_DEBUG("'ft2232' interface using FTD2XX with '%s' layout (%4.4x:%4.4x)",
1333             ft2232_layout, vid, pid);
1334
1335 #if IS_WIN32 == 0
1336         /* Add non-standard Vid/Pid to the linux driver */
1337         if ((status = FT_SetVIDPID(vid, pid)) != FT_OK)
1338         {
1339                 LOG_WARNING("couldn't add %4.4x:%4.4x",
1340                     vid, pid);
1341         }
1342 #endif
1343
1344         if (ft2232_device_desc && ft2232_serial)
1345         {
1346                 LOG_WARNING("can't open by device description and serial number, giving precedence to serial");
1347                 ft2232_device_desc = NULL;
1348         }
1349
1350         if (ft2232_device_desc)
1351         {
1352                 openex_string = ft2232_device_desc;
1353                 openex_flags = FT_OPEN_BY_DESCRIPTION;
1354         }
1355         else if (ft2232_serial)
1356         {
1357                 openex_string = ft2232_serial;
1358                 openex_flags = FT_OPEN_BY_SERIAL_NUMBER;
1359         }
1360         else
1361         {
1362                 LOG_ERROR("neither device description nor serial number specified");
1363                 LOG_ERROR("please add \"ft2232_device_desc <string>\" or \"ft2232_serial <string>\" to your .cfg file");
1364
1365                 return ERROR_JTAG_INIT_FAILED;
1366         }
1367
1368         if ((status = FT_OpenEx(openex_string, openex_flags, &ftdih)) != FT_OK)
1369         {
1370                 DWORD num_devices;
1371
1372                 if (more) {
1373                         LOG_WARNING("unable to open ftdi device (trying more): %lu",
1374                             status);
1375                         *try_more = 1;
1376                         return ERROR_JTAG_INIT_FAILED;
1377                 }
1378                 LOG_ERROR("unable to open ftdi device: %lu", status);
1379                 status = FT_ListDevices(&num_devices, NULL, FT_LIST_NUMBER_ONLY);
1380                 if (status == FT_OK)
1381                 {
1382                         char **desc_array = malloc(sizeof(char*) * (num_devices + 1));
1383                         int i;
1384
1385                         for (i = 0; i < num_devices; i++)
1386                                 desc_array[i] = malloc(64);
1387                         desc_array[num_devices] = NULL;
1388
1389                         status = FT_ListDevices(desc_array, &num_devices, FT_LIST_ALL | openex_flags);
1390
1391                         if (status == FT_OK)
1392                         {
1393                                 LOG_ERROR("ListDevices: %lu\n", num_devices);
1394                                 for (i = 0; i < num_devices; i++)
1395                                         LOG_ERROR("%i: %s", i, desc_array[i]);
1396                         }
1397
1398                         for (i = 0; i < num_devices; i++)
1399                                 free(desc_array[i]);
1400                         free(desc_array);
1401                 }
1402                 else
1403                 {
1404                         LOG_ERROR("ListDevices: NONE\n");
1405                 }
1406                 return ERROR_JTAG_INIT_FAILED;
1407         }
1408
1409         if ((status = FT_SetLatencyTimer(ftdih, ft2232_latency)) != FT_OK)
1410         {
1411                 LOG_ERROR("unable to set latency timer: %lu", status);
1412                 return ERROR_JTAG_INIT_FAILED;
1413         }
1414
1415         if ((status = FT_GetLatencyTimer(ftdih, &latency_timer)) != FT_OK)
1416         {
1417                 LOG_ERROR("unable to get latency timer: %lu", status);
1418                 return ERROR_JTAG_INIT_FAILED;
1419         }
1420         else
1421         {
1422                 LOG_DEBUG("current latency timer: %i", latency_timer);
1423         }
1424
1425         if ((status = FT_SetTimeouts(ftdih, 5000, 5000)) != FT_OK)
1426         {
1427                 LOG_ERROR("unable to set timeouts: %lu", status);
1428                 return ERROR_JTAG_INIT_FAILED;
1429         }
1430
1431         if ((status = FT_SetBitMode(ftdih, 0x0b, 2)) != FT_OK)
1432         {
1433                 LOG_ERROR("unable to enable bit i/o mode: %lu", status);
1434                 return ERROR_JTAG_INIT_FAILED;
1435         }
1436
1437         return ERROR_OK;
1438 }
1439
1440 static int ft2232_purge_ftd2xx(void)
1441 {
1442         FT_STATUS status;
1443
1444         if ((status = FT_Purge(ftdih, FT_PURGE_RX | FT_PURGE_TX)) != FT_OK)
1445         {
1446                 LOG_ERROR("error purging ftd2xx device: %lu", status);
1447                 return ERROR_JTAG_INIT_FAILED;
1448         }
1449
1450         return ERROR_OK;
1451 }
1452 #endif /* BUILD_FT2232_FTD2XX == 1 */
1453
1454 #if BUILD_FT2232_LIBFTDI == 1
1455 static int ft2232_init_libftdi(u16 vid, u16 pid, int more, int *try_more)
1456 {
1457         u8 latency_timer;
1458
1459         LOG_DEBUG("'ft2232' interface using libftdi with '%s' layout (%4.4x:%4.4x)",
1460             ft2232_layout, vid, pid);
1461
1462         if (ftdi_init(&ftdic) < 0)
1463                 return ERROR_JTAG_INIT_FAILED;
1464
1465         /* context, vendor id, product id */
1466         if (ftdi_usb_open_desc(&ftdic, vid, pid, ft2232_device_desc,
1467             ft2232_serial) < 0) {
1468                 if (more)
1469                         LOG_WARNING("unable to open ftdi device (trying more): %s",
1470                              ftdic.error_str);
1471                 else
1472                         LOG_ERROR("unable to open ftdi device: %s", ftdic.error_str);
1473                 *try_more = 1;
1474                 return ERROR_JTAG_INIT_FAILED;
1475         }
1476
1477         if (ftdi_set_interface(&ftdic, INTERFACE_A) < 0)
1478         {
1479                 LOG_ERROR("unable to select FT2232 channel A: %s", ftdic.error_str);
1480                 return ERROR_JTAG_INIT_FAILED;
1481         }
1482
1483         if (ftdi_usb_reset(&ftdic) < 0)
1484         {
1485                 LOG_ERROR("unable to reset ftdi device");
1486                 return ERROR_JTAG_INIT_FAILED;
1487         }
1488
1489         if (ftdi_set_latency_timer(&ftdic, ft2232_latency) < 0)
1490         {
1491                 LOG_ERROR("unable to set latency timer");
1492                 return ERROR_JTAG_INIT_FAILED;
1493         }
1494
1495         if (ftdi_get_latency_timer(&ftdic, &latency_timer) < 0)
1496         {
1497                 LOG_ERROR("unable to get latency timer");
1498                 return ERROR_JTAG_INIT_FAILED;
1499         }
1500         else
1501         {
1502                 LOG_DEBUG("current latency timer: %i", latency_timer);
1503         }
1504
1505         ftdi_set_bitmode(&ftdic, 0x0b, 2); /* ctx, JTAG I/O mask */
1506
1507         return ERROR_OK;
1508 }
1509
1510 static int ft2232_purge_libftdi(void)
1511 {
1512         if (ftdi_usb_purge_buffers(&ftdic) < 0)
1513         {
1514                 LOG_ERROR("ftdi_purge_buffers: %s", ftdic.error_str);
1515                 return ERROR_JTAG_INIT_FAILED;
1516         }
1517
1518         return ERROR_OK;
1519 }
1520 #endif /* BUILD_FT2232_LIBFTDI == 1 */
1521
1522 int ft2232_init(void)
1523 {
1524         u8 buf[1];
1525         int retval;
1526         u32 bytes_written;
1527         ft2232_layout_t *cur_layout = ft2232_layouts;
1528         int i;
1529
1530         if ((ft2232_layout == NULL) || (ft2232_layout[0] == 0))
1531         {
1532                 ft2232_layout = "usbjtag";
1533                 LOG_WARNING("No ft2232 layout specified, using default 'usbjtag'");
1534         }
1535
1536         while (cur_layout->name)
1537         {
1538                 if (strcmp(cur_layout->name, ft2232_layout) == 0)
1539                 {
1540                         layout = cur_layout;
1541                         break;
1542                 }
1543                 cur_layout++;
1544         }
1545
1546         if (!layout)
1547         {
1548                 LOG_ERROR("No matching layout found for %s", ft2232_layout);
1549                 return ERROR_JTAG_INIT_FAILED;
1550         }
1551
1552         for (i = 0; 1; i++) {
1553                 /*
1554                  * "more indicates that there are more IDs to try, so we should
1555                  * not print an error for an ID mismatch (but for anything
1556                  * else, we should).
1557                  *
1558                  * try_more indicates that the error code returned indicates an
1559                  * ID mismatch (and nothing else) and that we should proceeed
1560                  * with the next ID pair.
1561                  */
1562                 int more = ft2232_vid[i+1] || ft2232_pid[i+1];
1563                 int try_more = 0;
1564
1565 #if BUILD_FT2232_FTD2XX == 1
1566                 retval = ft2232_init_ftd2xx(ft2232_vid[i], ft2232_pid[i],
1567                     more, &try_more);
1568 #elif BUILD_FT2232_LIBFTDI == 1
1569                 retval = ft2232_init_libftdi(ft2232_vid[i], ft2232_pid[i],
1570                     more, &try_more);
1571 #endif
1572                 if (retval >= 0)
1573                         break;
1574                 if (!more || !try_more)
1575                         return retval;
1576         }
1577
1578         ft2232_buffer_size = 0;
1579         ft2232_buffer = malloc(FT2232_BUFFER_SIZE);
1580
1581         if (layout->init() != ERROR_OK)
1582                 return ERROR_JTAG_INIT_FAILED;
1583
1584         ft2232_speed(jtag_speed);
1585
1586         buf[0] = 0x85; /* Disconnect TDI/DO to TDO/DI for Loopback */
1587         if (((retval = ft2232_write(buf, 1, &bytes_written)) != ERROR_OK) || (bytes_written != 1))
1588         {
1589                 LOG_ERROR("couldn't write to FT2232 to disable loopback");
1590                 return ERROR_JTAG_INIT_FAILED;
1591         }
1592
1593 #if BUILD_FT2232_FTD2XX == 1
1594         return ft2232_purge_ftd2xx();
1595 #elif BUILD_FT2232_LIBFTDI == 1
1596         return ft2232_purge_libftdi();
1597 #endif
1598
1599         return ERROR_OK;
1600 }
1601
1602 int usbjtag_init(void)
1603 {
1604         u8 buf[3];
1605         u32 bytes_written;
1606
1607         low_output = 0x08;
1608         low_direction = 0x0b;
1609
1610         if (strcmp(ft2232_layout, "usbjtag") == 0)
1611         {
1612                 nTRST = 0x10;
1613                 nTRSTnOE = 0x10;
1614                 nSRST = 0x40;
1615                 nSRSTnOE = 0x40;
1616         }
1617         else if (strcmp(ft2232_layout, "signalyzer") == 0)
1618         {
1619                 nTRST = 0x10;
1620                 nTRSTnOE = 0x10;
1621                 nSRST = 0x20;
1622                 nSRSTnOE = 0x20;
1623         }
1624         else if (strcmp(ft2232_layout, "evb_lm3s811") == 0)
1625         {
1626                 nTRST = 0x0;
1627                 nTRSTnOE = 0x00;
1628                 nSRST = 0x20;
1629                 nSRSTnOE = 0x20;
1630                 low_output = 0x88;
1631                 low_direction = 0x8b;
1632         }
1633         else
1634         {
1635                 LOG_ERROR("BUG: usbjtag_init called for unknown layout '%s'", ft2232_layout);
1636                 return ERROR_JTAG_INIT_FAILED;
1637         }
1638
1639         if (jtag_reset_config & RESET_TRST_OPEN_DRAIN)
1640         {
1641                 low_direction &= ~nTRSTnOE; /* nTRST input */
1642                 low_output &= ~nTRST; /* nTRST = 0 */
1643         }
1644         else
1645         {
1646                 low_direction |= nTRSTnOE; /* nTRST output */
1647                 low_output |= nTRST; /* nTRST = 1 */
1648         }
1649
1650         if (jtag_reset_config & RESET_SRST_PUSH_PULL)
1651         {
1652                 low_direction |= nSRSTnOE; /* nSRST output */
1653                 low_output |= nSRST; /* nSRST = 1 */
1654         }
1655         else
1656         {
1657                 low_direction &= ~nSRSTnOE; /* nSRST input */
1658                 low_output &= ~nSRST; /* nSRST = 0 */
1659         }
1660
1661         /* initialize low byte for jtag */
1662         buf[0] = 0x80; /* command "set data bits low byte" */
1663         buf[1] = low_output; /* value (TMS=1,TCK=0, TDI=0, xRST high) */
1664         buf[2] = low_direction; /* dir (output=1), TCK/TDI/TMS=out, TDO=in */
1665         LOG_DEBUG("%2.2x %2.2x %2.2x", buf[0], buf[1], buf[2]);
1666
1667         if (((ft2232_write(buf, 3, &bytes_written)) != ERROR_OK) || (bytes_written != 3))
1668         {
1669                 LOG_ERROR("couldn't initialize FT2232 with 'USBJTAG' layout");
1670                 return ERROR_JTAG_INIT_FAILED;
1671         }
1672
1673         return ERROR_OK;
1674 }
1675
1676 int jtagkey_init(void)
1677 {
1678         u8 buf[3];
1679         u32 bytes_written;
1680
1681         low_output = 0x08;
1682         low_direction = 0x1b;
1683
1684         /* initialize low byte for jtag */
1685         buf[0] = 0x80; /* command "set data bits low byte" */
1686         buf[1] = low_output; /* value (TMS=1,TCK=0, TDI=0, nOE=0) */
1687         buf[2] = low_direction; /* dir (output=1), TCK/TDI/TMS=out, TDO=in, nOE=out */
1688         LOG_DEBUG("%2.2x %2.2x %2.2x", buf[0], buf[1], buf[2]);
1689
1690         if (((ft2232_write(buf, 3, &bytes_written)) != ERROR_OK) || (bytes_written != 3))
1691         {
1692                 LOG_ERROR("couldn't initialize FT2232 with 'JTAGkey' layout");
1693                 return ERROR_JTAG_INIT_FAILED;
1694         }
1695
1696         if (strcmp(layout->name, "jtagkey") == 0)
1697         {
1698                 nTRST = 0x01;
1699                 nTRSTnOE = 0x4;
1700                 nSRST = 0x02;
1701                 nSRSTnOE = 0x08;
1702         }
1703         else if ((strcmp(layout->name, "jtagkey_prototype_v1") == 0) ||
1704                 (strcmp(layout->name, "oocdlink") == 0))
1705         {
1706                 nTRST = 0x02;
1707                 nTRSTnOE = 0x1;
1708                 nSRST = 0x08;
1709                 nSRSTnOE = 0x04;
1710         }
1711         else
1712         {
1713                 LOG_ERROR("BUG: jtagkey_init called for non jtagkey layout");
1714                 exit(-1);
1715         }
1716
1717         high_output = 0x0;
1718         high_direction = 0x0f;
1719
1720         if (jtag_reset_config & RESET_TRST_OPEN_DRAIN)
1721         {
1722                 high_output |= nTRSTnOE;
1723                 high_output &= ~nTRST;
1724         }
1725         else
1726         {
1727                 high_output &= ~nTRSTnOE;
1728                 high_output |= nTRST;
1729         }
1730
1731         if (jtag_reset_config & RESET_SRST_PUSH_PULL)
1732         {
1733                 high_output &= ~nSRSTnOE;
1734                 high_output |= nSRST;
1735         }
1736         else
1737         {
1738                 high_output |= nSRSTnOE;
1739                 high_output &= ~nSRST;
1740         }
1741
1742         /* initialize high port */
1743         buf[0] = 0x82; /* command "set data bits high byte" */
1744         buf[1] = high_output; /* value */
1745         buf[2] = high_direction;   /* all outputs (xRST and xRSTnOE) */
1746         LOG_DEBUG("%2.2x %2.2x %2.2x", buf[0], buf[1], buf[2]);
1747
1748         if (((ft2232_write(buf, 3, &bytes_written)) != ERROR_OK) || (bytes_written != 3))
1749         {
1750                 LOG_ERROR("couldn't initialize FT2232 with 'JTAGkey' layout");
1751                 return ERROR_JTAG_INIT_FAILED;
1752         }
1753
1754         return ERROR_OK;
1755 }
1756
1757 int olimex_jtag_init(void)
1758 {
1759         u8 buf[3];
1760         u32 bytes_written;
1761
1762         low_output = 0x08;
1763         low_direction = 0x1b;
1764
1765         /* initialize low byte for jtag */
1766         buf[0] = 0x80; /* command "set data bits low byte" */
1767         buf[1] = low_output; /* value (TMS=1,TCK=0, TDI=0, nOE=0) */
1768         buf[2] = low_direction; /* dir (output=1), TCK/TDI/TMS=out, TDO=in, nOE=out */
1769         LOG_DEBUG("%2.2x %2.2x %2.2x", buf[0], buf[1], buf[2]);
1770
1771         if (((ft2232_write(buf, 3, &bytes_written)) != ERROR_OK) || (bytes_written != 3))
1772         {
1773                 LOG_ERROR("couldn't initialize FT2232 with 'JTAGkey' layout");
1774                 return ERROR_JTAG_INIT_FAILED;
1775         }
1776
1777         nTRST = 0x01;
1778         nTRSTnOE = 0x4;
1779         nSRST = 0x02;
1780         nSRSTnOE = 0x00; /* no output enable for nSRST */
1781
1782         high_output = 0x0;
1783         high_direction = 0x0f;
1784
1785         if (jtag_reset_config & RESET_TRST_OPEN_DRAIN)
1786         {
1787                 high_output |= nTRSTnOE;
1788                 high_output &= ~nTRST;
1789         }
1790         else
1791         {
1792                 high_output &= ~nTRSTnOE;
1793                 high_output |= nTRST;
1794         }
1795
1796         if (jtag_reset_config & RESET_SRST_PUSH_PULL)
1797         {
1798                 LOG_ERROR("can't set nSRST to push-pull on the Olimex ARM-USB-OCD");
1799         }
1800         else
1801         {
1802                 high_output &= ~nSRST;
1803         }
1804
1805         /* turn red LED on */
1806         high_output |= 0x08;
1807
1808         /* initialize high port */
1809         buf[0] = 0x82; /* command "set data bits high byte" */
1810         buf[1] = high_output; /* value */
1811         buf[2] = high_direction;   /* all outputs (xRST and xRSTnOE) */
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         return ERROR_OK;
1821 }
1822
1823 int flyswatter_init(void)
1824 {
1825         u8 buf[3];
1826         u32 bytes_written;
1827
1828         low_output = 0x18;
1829         low_direction = 0xfb;
1830
1831         /* initialize low byte for jtag */
1832         buf[0] = 0x80; /* command "set data bits low byte" */
1833         buf[1] = low_output; /* value (TMS=1,TCK=0, TDI=0, nOE=0) */
1834         buf[2] = low_direction; /* dir (output=1), TCK/TDI/TMS=out, TDO=in, nOE[12]=out, n[ST]srst=out */
1835         LOG_DEBUG("%2.2x %2.2x %2.2x", buf[0], buf[1], buf[2]);
1836
1837         if (((ft2232_write(buf, 3, &bytes_written)) != ERROR_OK) || (bytes_written != 3))
1838         {
1839                 LOG_ERROR("couldn't initialize FT2232 with 'flyswatter' layout");
1840                 return ERROR_JTAG_INIT_FAILED;
1841         }
1842
1843         nTRST = 0x10;
1844         nTRSTnOE = 0x0; /* not output enable for nTRST */
1845         nSRST = 0x20;
1846         nSRSTnOE = 0x00; /* no output enable for nSRST */
1847
1848         high_output = 0x00;
1849         high_direction = 0x0c;
1850
1851         /* turn red LED1 on, LED2 off */
1852         high_output |= 0x08;
1853
1854         /* initialize high port */
1855         buf[0] = 0x82; /* command "set data bits high byte" */
1856         buf[1] = high_output; /* value */
1857         buf[2] = high_direction;   /* all outputs (xRST and xRSTnOE) */
1858         LOG_DEBUG("%2.2x %2.2x %2.2x", buf[0], buf[1], buf[2]);
1859
1860         if (((ft2232_write(buf, 3, &bytes_written)) != ERROR_OK) || (bytes_written != 3))
1861         {
1862                 LOG_ERROR("couldn't initialize FT2232 with 'flyswatter' layout");
1863                 return ERROR_JTAG_INIT_FAILED;
1864         }
1865
1866         return ERROR_OK;
1867 }
1868
1869 int turtle_init(void)
1870 {
1871         u8 buf[3];
1872         u32 bytes_written;
1873
1874         low_output = 0x08;
1875         low_direction = 0x5b;
1876
1877         /* initialize low byte for jtag */
1878         buf[0] = 0x80; /* command "set data bits low byte" */
1879         buf[1] = low_output; /* value (TMS=1,TCK=0, TDI=0, nOE=0) */
1880         buf[2] = low_direction; /* dir (output=1), TCK/TDI/TMS=out, TDO=in, nOE=out */
1881         LOG_DEBUG("%2.2x %2.2x %2.2x", buf[0], buf[1], buf[2]);
1882
1883         if (((ft2232_write(buf, 3, &bytes_written)) != ERROR_OK) || (bytes_written != 3))
1884         {
1885                 LOG_ERROR("couldn't initialize FT2232 with 'turtelizer2' layout");
1886                 return ERROR_JTAG_INIT_FAILED;
1887         }
1888
1889         nSRST = 0x40;
1890
1891         high_output = 0x00;
1892         high_direction = 0x0C;
1893
1894         /* initialize high port */
1895         buf[0] = 0x82; /* command "set data bits high byte" */
1896         buf[1] = high_output;
1897         buf[2] = high_direction;
1898         LOG_DEBUG("%2.2x %2.2x %2.2x", buf[0], buf[1], buf[2]);
1899
1900         if (((ft2232_write(buf, 3, &bytes_written)) != ERROR_OK) || (bytes_written != 3))
1901         {
1902                 LOG_ERROR("couldn't initialize FT2232 with 'turtelizer2' layout");
1903                 return ERROR_JTAG_INIT_FAILED;
1904         }
1905
1906         return ERROR_OK;
1907 }
1908
1909 int comstick_init(void)
1910 {
1911         u8 buf[3];
1912         u32 bytes_written;
1913
1914         low_output = 0x08;
1915         low_direction = 0x0b;
1916
1917         /* initialize low byte for jtag */
1918         buf[0] = 0x80; /* command "set data bits low byte" */
1919         buf[1] = low_output; /* value (TMS=1,TCK=0, TDI=0, nOE=0) */
1920         buf[2] = low_direction; /* dir (output=1), TCK/TDI/TMS=out, TDO=in, nOE=out */
1921         LOG_DEBUG("%2.2x %2.2x %2.2x", buf[0], buf[1], buf[2]);
1922
1923         if (((ft2232_write(buf, 3, &bytes_written)) != ERROR_OK) || (bytes_written != 3))
1924         {
1925                 LOG_ERROR("couldn't initialize FT2232 with 'comstick' layout");
1926                 return ERROR_JTAG_INIT_FAILED;
1927         }
1928
1929         nTRST = 0x01;
1930         nTRSTnOE = 0x00; /* no output enable for nTRST */
1931         nSRST = 0x02;
1932         nSRSTnOE = 0x00; /* no output enable for nSRST */
1933
1934         high_output = 0x03;
1935         high_direction = 0x03;
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 'comstick' layout");
1946                 return ERROR_JTAG_INIT_FAILED;
1947         }
1948
1949         return ERROR_OK;
1950 }
1951
1952 int stm32stick_init(void)
1953 {
1954         u8 buf[3];
1955         u32 bytes_written;
1956
1957         low_output = 0x88;
1958         low_direction = 0x8b;
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 'stm32stick' layout");
1969                 return ERROR_JTAG_INIT_FAILED;
1970         }
1971
1972         nTRST = 0x01;
1973         nTRSTnOE = 0x00; /* no output enable for nTRST */
1974         nSRST = 0x80;
1975         nSRSTnOE = 0x00; /* no output enable for nSRST */
1976
1977         high_output = 0x01;
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 'stm32stick' layout");
1989                 return ERROR_JTAG_INIT_FAILED;
1990         }
1991
1992         return ERROR_OK;
1993 }
1994
1995 void olimex_jtag_blink(void)
1996 {
1997         /* Olimex ARM-USB-OCD has a LED connected to ACBUS3
1998          * ACBUS3 is bit 3 of the GPIOH port
1999          */
2000         if (high_output & 0x08)
2001         {
2002                 /* set port pin high */
2003                 high_output &= 0x07;
2004         }
2005         else
2006         {
2007                 /* set port pin low */
2008                 high_output |= 0x08;
2009         }
2010
2011         BUFFER_ADD = 0x82;
2012         BUFFER_ADD = high_output;
2013         BUFFER_ADD = high_direction;
2014 }
2015
2016 void turtle_jtag_blink(void)
2017 {
2018         /*
2019    * Turtelizer2 has two LEDs connected to ACBUS2 and ACBUS3
2020          */
2021         if (high_output & 0x08)
2022         {
2023                 high_output = 0x04;
2024         }
2025         else
2026         {
2027                 high_output = 0x08;
2028         }
2029
2030         BUFFER_ADD = 0x82;
2031         BUFFER_ADD = high_output;
2032         BUFFER_ADD = high_direction;
2033 }
2034
2035
2036 int ft2232_quit(void)
2037 {
2038 #if BUILD_FT2232_FTD2XX == 1
2039         FT_STATUS status;
2040
2041         status = FT_Close(ftdih);
2042 #elif BUILD_FT2232_LIBFTDI == 1
2043         ftdi_disable_bitbang(&ftdic);
2044
2045         ftdi_usb_close(&ftdic);
2046
2047         ftdi_deinit(&ftdic);
2048 #endif
2049
2050         free(ft2232_buffer);
2051         ft2232_buffer = NULL;
2052
2053         return ERROR_OK;
2054 }
2055
2056 int ft2232_handle_device_desc_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2057 {
2058         if (argc == 1)
2059         {
2060                 ft2232_device_desc = strdup(args[0]);
2061         }
2062         else
2063         {
2064                 LOG_ERROR("expected exactly one argument to ft2232_device_desc <description>");
2065         }
2066
2067         return ERROR_OK;
2068 }
2069
2070 int ft2232_handle_serial_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2071 {
2072         if (argc == 1)
2073         {
2074                 ft2232_serial = strdup(args[0]);
2075         }
2076         else
2077         {
2078                 LOG_ERROR("expected exactly one argument to ft2232_serial <serial-number>");
2079         }
2080
2081         return ERROR_OK;
2082 }
2083
2084 int ft2232_handle_layout_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2085 {
2086         if (argc == 0)
2087                 return ERROR_OK;
2088
2089         ft2232_layout = malloc(strlen(args[0]) + 1);
2090         strcpy(ft2232_layout, args[0]);
2091
2092         return ERROR_OK;
2093 }
2094
2095 int ft2232_handle_vid_pid_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2096 {
2097         int i;
2098
2099         if (argc > MAX_USB_IDS*2) {
2100                 LOG_WARNING("ignoring extra IDs in ft2232_vid_pid "
2101                     "(maximum is %d pairs)", MAX_USB_IDS);
2102                 argc = MAX_USB_IDS*2;
2103         }
2104         if (argc < 2 || (argc & 1))
2105         {
2106                 LOG_WARNING("incomplete ft2232_vid_pid configuration directive");
2107                 if (argc < 2)
2108                         return ERROR_OK;
2109         }
2110
2111         for (i = 0; i+1 < argc; i += 2) {
2112                 ft2232_vid[i >> 1] = strtol(args[i], NULL, 0);
2113                 ft2232_pid[i >> 1] = strtol(args[i+1], NULL, 0);
2114         }
2115         /*
2116          * Explicitly terminate, in case there are multiples instances of
2117          * ft2232_vid_pid.
2118          */
2119         ft2232_vid[i >> 1] = ft2232_pid[i >> 1] = 0;
2120
2121         return ERROR_OK;
2122 }
2123
2124 int ft2232_handle_latency_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2125 {
2126         if (argc == 1)
2127         {
2128                 ft2232_latency = atoi(args[0]);
2129         }
2130         else
2131         {
2132                 LOG_ERROR("expected exactly one argument to ft2232_latency <ms>");
2133         }
2134
2135         return ERROR_OK;
2136 }
2137
2138