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   1 /*
   2  * Copyright (C) 2009 by Simon Qian
   3  * SimonQian@SimonQian.com
   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 along
  16  * with this program; if not, write to the Free Software Foundation, Inc.,
  17  * 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  18  */
  19
  20
  21 /* The specification for SVF is available here:
  22  * http://www.asset-intertech.com/support/svf.pdf
  23  * Below, this document is refered to as the "SVF spec".
  24  *
  25  * The specification for XSVF is available here:
  26  * http://www.xilinx.com/support/documentation/application_notes/xapp503.pdf
  27  * Below, this document is refered to as the "XSVF spec".
  28  */
  29
  30 #ifdef HAVE_CONFIG_H
  31 #include "config.h"
  32 #endif
  33
  34 #include <jtag/jtag.h>
  35 #include "svf.h"
  36 #include <helper/time_support.h>
  37
  38
  39 // SVF command
  40 typedef enum
  41 {
  42         ENDDR,
  43         ENDIR,
  44         FREQUENCY,
  45         HDR,
  46         HIR,
  47         PIO,
  48         PIOMAP,
  49         RUNTEST,
  50         SDR,
  51         SIR,
  52         STATE,
  53         TDR,
  54         TIR,
  55         TRST,
  56 }svf_command_t;
  57
  58 static const char *svf_command_name[14] =
  59 {
  60         "ENDDR",
  61         "ENDIR",
  62         "FREQUENCY",
  63         "HDR",
  64         "HIR",
  65         "PIO",
  66         "PIOMAP",
  67         "RUNTEST",
  68         "SDR",
  69         "SIR",
  70         "STATE",
  71         "TDR",
  72         "TIR",
  73         "TRST"
  74 };
  75
  76 typedef enum
  77 {
  78         TRST_ON,
  79         TRST_OFF,
  80         TRST_Z,
  81         TRST_ABSENT
  82 }trst_mode_t;
  83
  84 static const char *svf_trst_mode_name[4] =
  85 {
  86         "ON",
  87         "OFF",
  88         "Z",
  89         "ABSENT"
  90 };
  91
  92 struct svf_statemove
  93 {
  94         tap_state_t from;
  95         tap_state_t to;
  96         uint32_t num_of_moves;
  97         tap_state_t paths[8];
  98 };
  99
 100 /*
 101  * These paths are from the SVF specification for the STATE command, to be
 102  * used when the STATE command only includes the final state.  The first
 103  * element of the path is the "from" (current) state, and the last one is
 104  * the "to" (target) state.
 105  *
 106  * All specified paths are the shortest ones in the JTAG spec, and are thus
 107  * not (!!) exact matches for the paths used elsewhere in OpenOCD.  Note
 108  * that PAUSE-to-PAUSE transitions all go through UPDATE and then CAPTURE,
 109  * which has specific effects on the various registers; they are not NOPs.
 110  *
 111  * Paths to RESET are disabled here.  As elsewhere in OpenOCD, and in XSVF
 112  * and many SVF implementations, we don't want to risk missing that state.
 113  * To get to RESET, always we ignore the current state.
 114  */
 115 static const struct svf_statemove svf_statemoves[] =
 116 {
 117         // from                 to                              num_of_moves,   paths[8]
 118 //      {TAP_RESET,             TAP_RESET,              1,                              {TAP_RESET}},
 119         {TAP_RESET,             TAP_IDLE,               2,                              {TAP_RESET, TAP_IDLE}},
 120         {TAP_RESET,             TAP_DRPAUSE,    6,                              {TAP_RESET, TAP_IDLE, TAP_DRSELECT, TAP_DRCAPTURE, TAP_DREXIT1, TAP_DRPAUSE}},
 121         {TAP_RESET,             TAP_IRPAUSE,    7,                              {TAP_RESET, TAP_IDLE, TAP_DRSELECT, TAP_IRSELECT, TAP_IRCAPTURE, TAP_IREXIT1, TAP_IRPAUSE}},
 122
 123 //      {TAP_IDLE,              TAP_RESET,              4,                              {TAP_IDLE, TAP_DRSELECT, TAP_IRSELECT, TAP_RESET}},
 124         {TAP_IDLE,              TAP_IDLE,               1,                              {TAP_IDLE}},
 125         {TAP_IDLE,              TAP_DRPAUSE,    5,                              {TAP_IDLE, TAP_DRSELECT, TAP_DRCAPTURE, TAP_DREXIT1, TAP_DRPAUSE}},
 126         {TAP_IDLE,              TAP_IRPAUSE,    6,                              {TAP_IDLE, TAP_DRSELECT, TAP_IRSELECT, TAP_IRCAPTURE, TAP_IREXIT1, TAP_IRPAUSE}},
 127
 128 //      {TAP_DRPAUSE,   TAP_RESET,              6,                              {TAP_DRPAUSE, TAP_DREXIT2, TAP_DRUPDATE, TAP_DRSELECT, TAP_IRSELECT, TAP_RESET}},
 129         {TAP_DRPAUSE,   TAP_IDLE,               4,                              {TAP_DRPAUSE, TAP_DREXIT2, TAP_DRUPDATE, TAP_IDLE}},
 130         {TAP_DRPAUSE,   TAP_DRPAUSE,    7,                              {TAP_DRPAUSE, TAP_DREXIT2, TAP_DRUPDATE, TAP_DRSELECT, TAP_DRCAPTURE, TAP_DREXIT1, TAP_DRPAUSE}},
 131         {TAP_DRPAUSE,   TAP_IRPAUSE,    8,                              {TAP_DRPAUSE, TAP_DREXIT2, TAP_DRUPDATE, TAP_DRSELECT, TAP_IRSELECT, TAP_IRCAPTURE, TAP_IREXIT1, TAP_IRPAUSE}},
 132
 133 //      {TAP_IRPAUSE,   TAP_RESET,              6,                              {TAP_IRPAUSE, TAP_IREXIT2, TAP_IRUPDATE, TAP_DRSELECT, TAP_IRSELECT, TAP_RESET}},
 134         {TAP_IRPAUSE,   TAP_IDLE,               4,                              {TAP_IRPAUSE, TAP_IREXIT2, TAP_IRUPDATE, TAP_IDLE}},
 135         {TAP_IRPAUSE,   TAP_DRPAUSE,    7,                              {TAP_IRPAUSE, TAP_IREXIT2, TAP_IRUPDATE, TAP_DRSELECT, TAP_DRCAPTURE, TAP_DREXIT1, TAP_DRPAUSE}},
 136         {TAP_IRPAUSE,   TAP_IRPAUSE,    8,                              {TAP_IRPAUSE, TAP_IREXIT2, TAP_IRUPDATE, TAP_DRSELECT, TAP_IRSELECT, TAP_IRCAPTURE, TAP_IREXIT1, TAP_IRPAUSE}}
 137 };
 138
 139
 140 #define XXR_TDI                                         (1 << 0)
 141 #define XXR_TDO                                         (1 << 1)
 142 #define XXR_MASK                                        (1 << 2)
 143 #define XXR_SMASK                                       (1 << 3)
 144 struct svf_xxr_para
 145 {
 146         int len;
 147         int data_mask;
 148         uint8_t *tdi;
 149         uint8_t *tdo;
 150         uint8_t *mask;
 151         uint8_t *smask;
 152 };
 153
 154 struct svf_para
 155 {
 156         float frequency;
 157         tap_state_t ir_end_state;
 158         tap_state_t dr_end_state;
 159         tap_state_t runtest_run_state;
 160         tap_state_t runtest_end_state;
 161         trst_mode_t trst_mode;
 162
 163         struct svf_xxr_para hir_para;
 164         struct svf_xxr_para hdr_para;
 165         struct svf_xxr_para tir_para;
 166         struct svf_xxr_para tdr_para;
 167         struct svf_xxr_para sir_para;
 168         struct svf_xxr_para sdr_para;
 169 };
 170
 171 static struct svf_para svf_para;
 172 static const struct svf_para svf_para_init =
 173 {
 174 //      frequency,      ir_end_state,   dr_end_state,   runtest_run_state,      runtest_end_state,      trst_mode
 175         0,                      TAP_IDLE,               TAP_IDLE,               TAP_IDLE,                       TAP_IDLE,                       TRST_Z,
 176 //      hir_para
 177 //      {len,   data_mask,      tdi,    tdo,    mask,   smask},
 178         {0,             0,                      NULL,   NULL,   NULL,   NULL},
 179 //      hdr_para
 180 //      {len,   data_mask,      tdi,    tdo,    mask,   smask},
 181         {0,             0,                      NULL,   NULL,   NULL,   NULL},
 182 //      tir_para
 183 //      {len,   data_mask,      tdi,    tdo,    mask,   smask},
 184         {0,             0,                      NULL,   NULL,   NULL,   NULL},
 185 //      tdr_para
 186 //      {len,   data_mask,      tdi,    tdo,    mask,   smask},
 187         {0,             0,                      NULL,   NULL,   NULL,   NULL},
 188 //      sir_para
 189 //      {len,   data_mask,      tdi,    tdo,    mask,   smask},
 190         {0,             0,                      NULL,   NULL,   NULL,   NULL},
 191 //      sdr_para
 192 //      {len,   data_mask,      tdi,    tdo,    mask,   smask},
 193         {0,             0,                      NULL,   NULL,   NULL,   NULL},
 194 };
 195
 196 struct svf_check_tdo_para
 197 {
 198         int line_num;           // used to record line number of the check operation
 199                                                 // so more information could be printed
 200         int enabled;            // check is enabled or not
 201         int buffer_offset;      // buffer_offset to buffers
 202         int bit_len;            // bit length to check
 203 };
 204
 205 #define SVF_CHECK_TDO_PARA_SIZE 1024
 206 static struct svf_check_tdo_para *svf_check_tdo_para = NULL;
 207 static int svf_check_tdo_para_index = 0;
 208
 209 static int svf_read_command_from_file(int fd);
 210 static int svf_check_tdo(void);
 211 static int svf_add_check_para(uint8_t enabled, int buffer_offset, int bit_len);
 212 static int svf_run_command(struct command_context *cmd_ctx, char *cmd_str);
 213
 214 static int svf_fd = 0;
 215 static char *svf_command_buffer = NULL;
 216 static int svf_command_buffer_size = 0;
 217 static int svf_line_number = 1;
 218
 219 static struct jtag_tap *tap = NULL;
 220
 221 #define SVF_MAX_BUFFER_SIZE_TO_COMMIT   (4 * 1024)
 222 static uint8_t *svf_tdi_buffer = NULL, *svf_tdo_buffer = NULL, *svf_mask_buffer = NULL;
 223 static int svf_buffer_index = 0, svf_buffer_size = 0;
 224 static int svf_quiet = 0;
 225
 226
 227 static void svf_free_xxd_para(struct svf_xxr_para *para)
 228 {
 229         if (NULL != para)
 230         {
 231                 if (para->tdi != NULL)
 232                 {
 233                         free(para->tdi);
 234                         para->tdi = NULL;
 235                 }
 236                 if (para->tdo != NULL)
 237                 {
 238                         free(para->tdo);
 239                         para->tdo = NULL;
 240                 }
 241                 if (para->mask != NULL)
 242                 {
 243                         free(para->mask);
 244                         para->mask = NULL;
 245                 }
 246                 if (para->smask != NULL)
 247                 {
 248                         free(para->smask);
 249                         para->smask = NULL;
 250                 }
 251         }
 252 }
 253
 254 static unsigned svf_get_mask_u32(int bitlen)
 255 {
 256         uint32_t bitmask;
 257
 258         if (bitlen < 0)
 259         {
 260                 bitmask = 0;
 261         }
 262         else if (bitlen >= 32)
 263         {
 264                 bitmask = 0xFFFFFFFF;
 265         }
 266         else
 267         {
 268                 bitmask = (1 << bitlen) - 1;
 269         }
 270
 271         return bitmask;
 272 }
 273
 274 int svf_add_statemove(tap_state_t state_to)
 275 {
 276         tap_state_t state_from = cmd_queue_cur_state;
 277         uint8_t index;
 278
 279         /* when resetting, be paranoid and ignore current state */
 280         if (state_to == TAP_RESET) {
 281                 jtag_add_tlr();
 282                 return ERROR_OK;
 283         }
 284
 285         for (index = 0; index < ARRAY_SIZE(svf_statemoves); index++)
 286         {
 287                 if ((svf_statemoves[index].from == state_from)
 288                         && (svf_statemoves[index].to == state_to))
 289                 {
 290                         /* recorded path includes current state ... avoid extra TCKs! */
 291                         if (svf_statemoves[index].num_of_moves > 1)
 292                                 jtag_add_pathmove(svf_statemoves[index].num_of_moves - 1,
 293                                                 svf_statemoves[index].paths + 1);
 294                         else
 295                                 jtag_add_pathmove(svf_statemoves[index].num_of_moves,
 296                                                 svf_statemoves[index].paths);
 297                         return ERROR_OK;
 298                 }
 299         }
 300         LOG_ERROR("SVF: can not move to %s", tap_state_name(state_to));
 301         return ERROR_FAIL;
 302 }
 303
 304 COMMAND_HANDLER(handle_svf_command)
 305 {
 306 #define SVF_NUM_OF_OPTIONS                      1
 307         int command_num = 0;
 308         int ret = ERROR_OK;
 309         long long time_ago;
 310
 311         if ((CMD_ARGC < 1) || (CMD_ARGC > (1 + SVF_NUM_OF_OPTIONS)))
 312         {
 313                 command_print(CMD_CTX, "usage: svf <file> [quiet]");
 314                 return ERROR_FAIL;
 315         }
 316
 317         // parse variant
 318         svf_quiet = 0;
 319         for (unsigned i = 1; i < CMD_ARGC; i++)
 320         {
 321                 if (!strcmp(CMD_ARGV[i], "quiet"))
 322                 {
 323                         svf_quiet = 1;
 324                 }
 325                 else
 326                 {
 327                         LOG_ERROR("unknown variant for svf: %s", CMD_ARGV[i]);
 328
 329                         // no need to free anything now
 330                         return ERROR_FAIL;
 331                 }
 332         }
 333
 334         if ((svf_fd = open(CMD_ARGV[0], O_RDONLY)) < 0)
 335         {
 336                 command_print(CMD_CTX, "file \"%s\" not found", CMD_ARGV[0]);
 337
 338                 // no need to free anything now
 339                 return ERROR_FAIL;
 340         }
 341
 342         LOG_USER("svf processing file: \"%s\"", CMD_ARGV[0]);
 343
 344         // get time
 345         time_ago = timeval_ms();
 346
 347         // init
 348         svf_line_number = 1;
 349         svf_command_buffer_size = 0;
 350
 351         svf_check_tdo_para_index = 0;
 352         svf_check_tdo_para = malloc(sizeof(struct svf_check_tdo_para) * SVF_CHECK_TDO_PARA_SIZE);
 353         if (NULL == svf_check_tdo_para)
 354         {
 355                 LOG_ERROR("not enough memory");
 356                 ret = ERROR_FAIL;
 357                 goto free_all;
 358         }
 359
 360         svf_buffer_index = 0;
 361         // double the buffer size
 362         // in case current command cannot be commited, and next command is a bit scan command
 363         // here is 32K bits for this big scan command, it should be enough
 364         // buffer will be reallocated if buffer size is not enough
 365         svf_tdi_buffer = (uint8_t *)malloc(2 * SVF_MAX_BUFFER_SIZE_TO_COMMIT);
 366         if (NULL == svf_tdi_buffer)
 367         {
 368                 LOG_ERROR("not enough memory");
 369                 ret = ERROR_FAIL;
 370                 goto free_all;
 371         }
 372         svf_tdo_buffer = (uint8_t *)malloc(2 * SVF_MAX_BUFFER_SIZE_TO_COMMIT);
 373         if (NULL == svf_tdo_buffer)
 374         {
 375                 LOG_ERROR("not enough memory");
 376                 ret = ERROR_FAIL;
 377                 goto free_all;
 378         }
 379         svf_mask_buffer = (uint8_t *)malloc(2 * SVF_MAX_BUFFER_SIZE_TO_COMMIT);
 380         if (NULL == svf_mask_buffer)
 381         {
 382                 LOG_ERROR("not enough memory");
 383                 ret = ERROR_FAIL;
 384                 goto free_all;
 385         }
 386         svf_buffer_size = 2 * SVF_MAX_BUFFER_SIZE_TO_COMMIT;
 387
 388         memcpy(&svf_para, &svf_para_init, sizeof(svf_para));
 389
 390         // TAP_RESET
 391         jtag_add_tlr();
 392
 393         while (ERROR_OK == svf_read_command_from_file(svf_fd))
 394         {
 395                 if (ERROR_OK != svf_run_command(CMD_CTX, svf_command_buffer))
 396                 {
 397                         LOG_ERROR("fail to run command at line %d", svf_line_number);
 398                         ret = ERROR_FAIL;
 399                         break;
 400                 }
 401                 command_num++;
 402         }
 403         if (ERROR_OK != jtag_execute_queue())
 404         {
 405                 ret = ERROR_FAIL;
 406         }
 407         else if (ERROR_OK != svf_check_tdo())
 408         {
 409                 ret = ERROR_FAIL;
 410         }
 411
 412         // print time
 413         command_print(CMD_CTX, "%lld ms used", timeval_ms() - time_ago);
 414
 415 free_all:
 416
 417         close(svf_fd);
 418         svf_fd = 0;
 419
 420         // free buffers
 421         if (svf_command_buffer)
 422         {
 423                 free(svf_command_buffer);
 424                 svf_command_buffer = NULL;
 425                 svf_command_buffer_size = 0;
 426         }
 427         if (svf_check_tdo_para)
 428         {
 429                 free(svf_check_tdo_para);
 430                 svf_check_tdo_para = NULL;
 431                 svf_check_tdo_para_index = 0;
 432         }
 433         if (svf_tdi_buffer)
 434         {
 435                 free(svf_tdi_buffer);
 436                 svf_tdi_buffer = NULL;
 437         }
 438         if (svf_tdo_buffer)
 439         {
 440                 free(svf_tdo_buffer);
 441                 svf_tdo_buffer = NULL;
 442         }
 443         if (svf_mask_buffer)
 444         {
 445                 free(svf_mask_buffer);
 446                 svf_mask_buffer = NULL;
 447         }
 448         svf_buffer_index = 0;
 449         svf_buffer_size = 0;
 450
 451         svf_free_xxd_para(&svf_para.hdr_para);
 452         svf_free_xxd_para(&svf_para.hir_para);
 453         svf_free_xxd_para(&svf_para.tdr_para);
 454         svf_free_xxd_para(&svf_para.tir_para);
 455         svf_free_xxd_para(&svf_para.sdr_para);
 456         svf_free_xxd_para(&svf_para.sir_para);
 457
 458         if (ERROR_OK == ret)
 459         {
 460                 command_print(CMD_CTX, "svf file programmed successfully for %d commands", command_num);
 461         }
 462         else
 463         {
 464                 command_print(CMD_CTX, "svf file programmed failed");
 465         }
 466
 467         return ret;
 468 }
 469
 470 #define SVFP_CMD_INC_CNT                        1024
 471 static int svf_read_command_from_file(int fd)
 472 {
 473         char ch, *tmp_buffer = NULL;
 474         int cmd_pos = 0, cmd_ok = 0, slash = 0, comment = 0;
 475
 476         while (!cmd_ok && (read(fd, &ch, 1) > 0))
 477         {
 478                 switch (ch)
 479                 {
 480                 case '!':
 481                         slash = 0;
 482                         comment = 1;
 483                         break;
 484                 case '/':
 485                         if (++slash == 2)
 486                         {
 487                                 comment = 1;
 488                         }
 489                         break;
 490                 case ';':
 491                         slash = 0;
 492                         if (!comment)
 493                         {
 494                                 cmd_ok = 1;
 495                         }
 496                         break;
 497                 case '\n':
 498                         svf_line_number++;
 499                 case '\r':
 500                         slash = 0;
 501                         comment = 0;
 502                         break;
 503                 default:
 504                         if (!comment)
 505                         {
 506                                 if (cmd_pos >= svf_command_buffer_size - 1)
 507                                 {
 508                                         tmp_buffer = (char*)malloc(svf_command_buffer_size + SVFP_CMD_INC_CNT);         // 1 more byte for '\0'
 509                                         if (NULL == tmp_buffer)
 510                                         {
 511                                                 LOG_ERROR("not enough memory");
 512                                                 return ERROR_FAIL;
 513                                         }
 514                                         if (svf_command_buffer_size > 0)
 515                                         {
 516                                                 memcpy(tmp_buffer, svf_command_buffer, svf_command_buffer_size);
 517                                         }
 518                                         if (svf_command_buffer != NULL)
 519                                         {
 520                                                 free(svf_command_buffer);
 521                                         }
 522                                         svf_command_buffer = tmp_buffer;
 523                                         svf_command_buffer_size += SVFP_CMD_INC_CNT;
 524                                         tmp_buffer = NULL;
 525                                 }
 526                                 svf_command_buffer[cmd_pos++] = (char)toupper(ch);
 527                         }
 528                         break;
 529                 }
 530         }
 531
 532         if (cmd_ok)
 533         {
 534                 svf_command_buffer[cmd_pos] = '\0';
 535                 return ERROR_OK;
 536         }
 537         else
 538         {
 539                 return ERROR_FAIL;
 540         }
 541 }
 542
 543 static int svf_parse_cmd_string(char *str, int len, char **argus, int *num_of_argu)
 544 {
 545         int pos = 0, num = 0, space_found = 1;
 546
 547         while (pos < len)
 548         {
 549                 switch (str[pos])
 550                 {
 551                 case '\n':
 552                 case '\r':
 553                 case '!':
 554                 case '/':
 555                         LOG_ERROR("fail to parse svf command");
 556                         return ERROR_FAIL;
 557                         break;
 558                 case ' ':
 559                         space_found = 1;
 560                         str[pos] = '\0';
 561                         break;
 562                 default:
 563                         if (space_found)
 564                         {
 565                                 argus[num++] = &str[pos];
 566                                 space_found = 0;
 567                         }
 568                         break;
 569                 }
 570                 pos++;
 571         }
 572
 573         *num_of_argu = num;
 574
 575         return ERROR_OK;
 576 }
 577
 578 bool svf_tap_state_is_stable(tap_state_t state)
 579 {
 580         return (TAP_RESET == state) || (TAP_IDLE == state)
 581                         || (TAP_DRPAUSE == state) || (TAP_IRPAUSE == state);
 582 }
 583
 584 static int svf_find_string_in_array(char *str, char **strs, int num_of_element)
 585 {
 586         int i;
 587
 588         for (i = 0; i < num_of_element; i++)
 589         {
 590                 if (!strcmp(str, strs[i]))
 591                 {
 592                         return i;
 593                 }
 594         }
 595         return 0xFF;
 596 }
 597
 598 static int svf_adjust_array_length(uint8_t **arr, int orig_bit_len, int new_bit_len)
 599 {
 600         int new_byte_len = (new_bit_len + 7) >> 3;
 601
 602         if ((NULL == *arr) || (((orig_bit_len + 7) >> 3) < ((new_bit_len + 7) >> 3)))
 603         {
 604                 if (*arr != NULL)
 605                 {
 606                         free(*arr);
 607                         *arr = NULL;
 608                 }
 609                 *arr = (uint8_t*)malloc(new_byte_len);
 610                 if (NULL == *arr)
 611                 {
 612                         LOG_ERROR("not enough memory");
 613                         return ERROR_FAIL;
 614                 }
 615                 memset(*arr, 0, new_byte_len);
 616         }
 617         return ERROR_OK;
 618 }
 619
 620 static int svf_copy_hexstring_to_binary(char *str, uint8_t **bin, int orig_bit_len, int bit_len)
 621 {
 622         int i, str_len = strlen(str), str_hbyte_len = (bit_len + 3) >> 2;
 623         uint8_t ch = 0;
 624
 625         if (ERROR_OK != svf_adjust_array_length(bin, orig_bit_len, bit_len))
 626         {
 627                 LOG_ERROR("fail to adjust length of array");
 628                 return ERROR_FAIL;
 629         }
 630
 631         for (i = 0; i < str_hbyte_len; i++)
 632         {
 633                 ch = 0;
 634                 while (str_len > 0)
 635                 {
 636                         ch = str[--str_len];
 637
 638                         if (!isblank(ch))
 639                         {
 640                                 if ((ch >= '0') && (ch <= '9'))
 641                                 {
 642                                         ch = ch - '0';
 643                                         break;
 644                                 }
 645                                 else if ((ch >= 'A') && (ch <= 'F'))
 646                                 {
 647                                         ch = ch - 'A' + 10;
 648                                         break;
 649                                 }
 650                                 else
 651                                 {
 652                                         LOG_ERROR("invalid hex string");
 653                                         return ERROR_FAIL;
 654                                 }
 655                         }
 656
 657                         ch = 0;
 658                 }
 659
 660                 // write bin
 661                 if (i % 2)
 662                 {
 663                         // MSB
 664                         (*bin)[i / 2] |= ch << 4;
 665                 }
 666                 else
 667                 {
 668                         // LSB
 669                         (*bin)[i / 2] = 0;
 670                         (*bin)[i / 2] |= ch;
 671                 }
 672         }
 673
 674         // consume optional leading '0' characters
 675         while (str_len > 0 && str[str_len - 1] == '0')
 676                 str_len--;
 677
 678         // check valid
 679         if (str_len > 0 || (ch & ~((2 << ((bit_len - 1) % 4)) - 1)) != 0)
 680         {
 681                 LOG_ERROR("value execeeds length");
 682                 return ERROR_FAIL;
 683         }
 684
 685         return ERROR_OK;
 686 }
 687
 688 static int svf_check_tdo(void)
 689 {
 690         int i, len, index;
 691
 692         for (i = 0; i < svf_check_tdo_para_index; i++)
 693         {
 694                 index = svf_check_tdo_para[i].buffer_offset;
 695                 len = svf_check_tdo_para[i].bit_len;
 696                 if ((svf_check_tdo_para[i].enabled)
 697                         && buf_cmp_mask(&svf_tdi_buffer[index], &svf_tdo_buffer[index], &svf_mask_buffer[index], len))
 698                 {
 699                         unsigned bitmask;
 700                         unsigned received, expected, tapmask;
 701                         bitmask = svf_get_mask_u32(svf_check_tdo_para[i].bit_len);
 702
 703                         memcpy(&received, svf_tdi_buffer + index, sizeof(unsigned));
 704                         memcpy(&expected, svf_tdo_buffer + index, sizeof(unsigned));
 705                         memcpy(&tapmask, svf_mask_buffer + index, sizeof(unsigned));
 706                         LOG_ERROR("tdo check error at line %d",
 707                                           svf_check_tdo_para[i].line_num);
 708                         LOG_ERROR("read = 0x%X, want = 0x%X, mask = 0x%X",
 709                                           received & bitmask,
 710                                           expected & bitmask,
 711                                           tapmask & bitmask);
 712                         return ERROR_FAIL;
 713                 }
 714         }
 715         svf_check_tdo_para_index = 0;
 716
 717         return ERROR_OK;
 718 }
 719
 720 static int svf_add_check_para(uint8_t enabled, int buffer_offset, int bit_len)
 721 {
 722         if (svf_check_tdo_para_index >= SVF_CHECK_TDO_PARA_SIZE)
 723         {
 724                 LOG_ERROR("toooooo many operation undone");
 725                 return ERROR_FAIL;
 726         }
 727
 728         svf_check_tdo_para[svf_check_tdo_para_index].line_num = svf_line_number;
 729         svf_check_tdo_para[svf_check_tdo_para_index].bit_len = bit_len;
 730         svf_check_tdo_para[svf_check_tdo_para_index].enabled = enabled;
 731         svf_check_tdo_para[svf_check_tdo_para_index].buffer_offset = buffer_offset;
 732         svf_check_tdo_para_index++;
 733
 734         return ERROR_OK;
 735 }
 736
 737 static int svf_execute_tap(void)
 738 {
 739         if (ERROR_OK != jtag_execute_queue())
 740         {
 741                 return ERROR_FAIL;
 742         }
 743         else if (ERROR_OK != svf_check_tdo())
 744         {
 745                 return ERROR_FAIL;
 746         }
 747
 748         svf_buffer_index = 0;
 749
 750         return ERROR_OK;
 751 }
 752
 753 static int svf_run_command(struct command_context *cmd_ctx, char *cmd_str)
 754 {
 755         char *argus[256], command;
 756         int num_of_argu = 0, i;
 757
 758         // tmp variable
 759         int i_tmp;
 760
 761         // for RUNTEST
 762         int run_count;
 763         float min_time, max_time;
 764         // for XXR
 765         struct svf_xxr_para *xxr_para_tmp;
 766         uint8_t **pbuffer_tmp;
 767         struct scan_field field;
 768         // for STATE
 769         tap_state_t *path = NULL, state;
 770
 771         if (!svf_quiet)
 772         {
 773                 LOG_USER("%s", svf_command_buffer);
 774         }
 775
 776         if (ERROR_OK != svf_parse_cmd_string(cmd_str, strlen(cmd_str), argus, &num_of_argu))
 777         {
 778                 return ERROR_FAIL;
 779         }
 780
 781         /* NOTE: we're a bit loose here, because we ignore case in
 782          * TAP state names (instead of insisting on uppercase).
 783          */
 784
 785         command = svf_find_string_in_array(argus[0],
 786                         (char **)svf_command_name, ARRAY_SIZE(svf_command_name));
 787         switch (command)
 788         {
 789         case ENDDR:
 790         case ENDIR:
 791                 if (num_of_argu != 2)
 792                 {
 793                         LOG_ERROR("invalid parameter of %s", argus[0]);
 794                         return ERROR_FAIL;
 795                 }
 796
 797                 i_tmp = tap_state_by_name(argus[1]);
 798
 799                 if (svf_tap_state_is_stable(i_tmp))
 800                 {
 801                         if (command == ENDIR)
 802                         {
 803                                 svf_para.ir_end_state = i_tmp;
 804                                 LOG_DEBUG("\tIR end_state = %s",
 805                                                 tap_state_name(i_tmp));
 806                         }
 807                         else
 808                         {
 809                                 svf_para.dr_end_state = i_tmp;
 810                                 LOG_DEBUG("\tDR end_state = %s",
 811                                                 tap_state_name(i_tmp));
 812                         }
 813                 }
 814                 else
 815                 {
 816                         LOG_ERROR("%s: %s is not a stable state",
 817                                         argus[0], argus[1]);
 818                         return ERROR_FAIL;
 819                 }
 820                 break;
 821         case FREQUENCY:
 822                 if ((num_of_argu != 1) && (num_of_argu != 3))
 823                 {
 824                         LOG_ERROR("invalid parameter of %s", argus[0]);
 825                         return ERROR_FAIL;
 826                 }
 827                 if (1 == num_of_argu)
 828                 {
 829                         // TODO: set jtag speed to full speed
 830                         svf_para.frequency = 0;
 831                 }
 832                 else
 833                 {
 834                         if (strcmp(argus[2], "HZ"))
 835                         {
 836                                 LOG_ERROR("HZ not found in FREQUENCY command");
 837                                 return ERROR_FAIL;
 838                         }
 839                         if (ERROR_OK != svf_execute_tap())
 840                         {
 841                                 return ERROR_FAIL;
 842                         }
 843                         svf_para.frequency = atof(argus[1]);
 844                         // TODO: set jtag speed to
 845                         if (svf_para.frequency > 0)
 846                         {
 847                                 command_run_linef(cmd_ctx, "jtag_khz %d", (int)svf_para.frequency / 1000);
 848                                 LOG_DEBUG("\tfrequency = %f", svf_para.frequency);
 849                         }
 850                 }
 851                 break;
 852         case HDR:
 853                 xxr_para_tmp = &svf_para.hdr_para;
 854                 goto XXR_common;
 855         case HIR:
 856                 xxr_para_tmp = &svf_para.hir_para;
 857                 goto XXR_common;
 858         case TDR:
 859                 xxr_para_tmp = &svf_para.tdr_para;
 860                 goto XXR_common;
 861         case TIR:
 862                 xxr_para_tmp = &svf_para.tir_para;
 863                 goto XXR_common;
 864         case SDR:
 865                 xxr_para_tmp = &svf_para.sdr_para;
 866                 goto XXR_common;
 867         case SIR:
 868                 xxr_para_tmp = &svf_para.sir_para;
 869                 goto XXR_common;
 870                 XXR_common:
 871                 // XXR length [TDI (tdi)] [TDO (tdo)][MASK (mask)] [SMASK (smask)]
 872                 if ((num_of_argu > 10) || (num_of_argu % 2))
 873                 {
 874                         LOG_ERROR("invalid parameter of %s", argus[0]);
 875                         return ERROR_FAIL;
 876                 }
 877                 i_tmp = xxr_para_tmp->len;
 878                 xxr_para_tmp->len = atoi(argus[1]);
 879                 LOG_DEBUG("\tlength = %d", xxr_para_tmp->len);
 880                 xxr_para_tmp->data_mask = 0;
 881                 for (i = 2; i < num_of_argu; i += 2)
 882                 {
 883                         if ((strlen(argus[i + 1]) < 3) || (argus[i + 1][0] != '(') || (argus[i + 1][strlen(argus[i + 1]) - 1] != ')'))
 884                         {
 885                                 LOG_ERROR("data section error");
 886                                 return ERROR_FAIL;
 887                         }
 888                         argus[i + 1][strlen(argus[i + 1]) - 1] = '\0';
 889                         // TDI, TDO, MASK, SMASK
 890                         if (!strcmp(argus[i], "TDI"))
 891                         {
 892                                 // TDI
 893                                 pbuffer_tmp = &xxr_para_tmp->tdi;
 894                                 xxr_para_tmp->data_mask |= XXR_TDI;
 895                         }
 896                         else if (!strcmp(argus[i], "TDO"))
 897                         {
 898                                 // TDO
 899                                 pbuffer_tmp = &xxr_para_tmp->tdo;
 900                                 xxr_para_tmp->data_mask |= XXR_TDO;
 901                         }
 902                         else if (!strcmp(argus[i], "MASK"))
 903                         {
 904                                 // MASK
 905                                 pbuffer_tmp = &xxr_para_tmp->mask;
 906                                 xxr_para_tmp->data_mask |= XXR_MASK;
 907                         }
 908                         else if (!strcmp(argus[i], "SMASK"))
 909                         {
 910                                 // SMASK
 911                                 pbuffer_tmp = &xxr_para_tmp->smask;
 912                                 xxr_para_tmp->data_mask |= XXR_SMASK;
 913                         }
 914                         else
 915                         {
 916                                 LOG_ERROR("unknow parameter: %s", argus[i]);
 917                                 return ERROR_FAIL;
 918                         }
 919                         if (ERROR_OK != svf_copy_hexstring_to_binary(&argus[i + 1][1], pbuffer_tmp, i_tmp, xxr_para_tmp->len))
 920                         {
 921                                 LOG_ERROR("fail to parse hex value");
 922                                 return ERROR_FAIL;
 923                         }
 924                         LOG_DEBUG("\t%s = 0x%X", argus[i], (**(int**)pbuffer_tmp) & svf_get_mask_u32(xxr_para_tmp->len));
 925                 }
 926                 // If a command changes the length of the last scan of the same type and the MASK parameter is absent,
 927                 // the mask pattern used is all cares
 928                 if (!(xxr_para_tmp->data_mask & XXR_MASK) && (i_tmp != xxr_para_tmp->len))
 929                 {
 930                         // MASK not defined and length changed
 931                         if (ERROR_OK != svf_adjust_array_length(&xxr_para_tmp->mask, i_tmp, xxr_para_tmp->len))
 932                         {
 933                                 LOG_ERROR("fail to adjust length of array");
 934                                 return ERROR_FAIL;
 935                         }
 936                         buf_set_ones(xxr_para_tmp->mask, xxr_para_tmp->len);
 937                 }
 938                 // If TDO is absent, no comparison is needed, set the mask to 0
 939                 if (!(xxr_para_tmp->data_mask & XXR_TDO))
 940                 {
 941                         if (NULL == xxr_para_tmp->tdo)
 942                         {
 943                                 if (ERROR_OK != svf_adjust_array_length(&xxr_para_tmp->tdo, i_tmp, xxr_para_tmp->len))
 944                                 {
 945                                         LOG_ERROR("fail to adjust length of array");
 946                                         return ERROR_FAIL;
 947                                 }
 948                         }
 949                         if (NULL == xxr_para_tmp->mask)
 950                         {
 951                                 if (ERROR_OK != svf_adjust_array_length(&xxr_para_tmp->mask, i_tmp, xxr_para_tmp->len))
 952                                 {
 953                                         LOG_ERROR("fail to adjust length of array");
 954                                         return ERROR_FAIL;
 955                                 }
 956                         }
 957                         memset(xxr_para_tmp->mask, 0, (xxr_para_tmp->len + 7) >> 3);
 958                 }
 959                 // do scan if necessary
 960                 if (SDR == command)
 961                 {
 962                         // check buffer size first, reallocate if necessary
 963                         i = svf_para.hdr_para.len + svf_para.sdr_para.len + svf_para.tdr_para.len;
 964                         if ((svf_buffer_size - svf_buffer_index) < ((i + 7) >> 3))
 965                         {
 966 #if 1
 967                                 // simply print error message
 968                                 LOG_ERROR("buffer is not enough, report to author");
 969                                 return ERROR_FAIL;
 970 #else
 971                                 uint8_t *buffer_tmp;
 972
 973                                 // reallocate buffer
 974                                 buffer_tmp = (uint8_t *)malloc(svf_buffer_index + ((i + 7) >> 3));
 975                                 if (NULL == buffer_tmp)
 976                                 {
 977                                         LOG_ERROR("not enough memory");
 978                                         return ERROR_FAIL;
 979                                 }
 980                                 memcpy(buffer_tmp, svf_tdi_buffer, svf_buffer_index);
 981                                 // svf_tdi_buffer isn't NULL here
 982                                 free(svf_tdi_buffer);
 983                                 svf_tdi_buffer = buffer_tmp;
 984
 985                                 buffer_tmp = (uint8_t *)malloc(svf_buffer_index + ((i + 7) >> 3));
 986                                 if (NULL == buffer_tmp)
 987                                 {
 988                                         LOG_ERROR("not enough memory");
 989                                         return ERROR_FAIL;
 990                                 }
 991                                 memcpy(buffer_tmp, svf_tdo_buffer, svf_buffer_index);
 992                                 // svf_tdo_buffer isn't NULL here
 993                                 free(svf_tdo_buffer);
 994                                 svf_tdo_buffer = buffer_tmp;
 995
 996                                 buffer_tmp = (uint8_t *)malloc(svf_buffer_index + ((i + 7) >> 3));
 997                                 if (NULL == buffer_tmp)
 998                                 {
 999                                         LOG_ERROR("not enough memory");
1000                                         return ERROR_FAIL;
1001                                 }
1002                                 memcpy(buffer_tmp, svf_mask_buffer, svf_buffer_index);
1003                                 // svf_mask_buffer isn't NULL here
1004                                 free(svf_mask_buffer);
1005                                 svf_mask_buffer = buffer_tmp;
1006
1007                                 buffer_tmp = NULL;
1008                                 svf_buffer_size = svf_buffer_index + ((i + 7) >> 3);
1009 #endif
1010                         }
1011
1012                         // assemble dr data
1013                         i = 0;
1014                         buf_set_buf(svf_para.hdr_para.tdi, 0, &svf_tdi_buffer[svf_buffer_index], i, svf_para.hdr_para.len);
1015                         i += svf_para.hdr_para.len;
1016                         buf_set_buf(svf_para.sdr_para.tdi, 0, &svf_tdi_buffer[svf_buffer_index], i, svf_para.sdr_para.len);
1017                         i += svf_para.sdr_para.len;
1018                         buf_set_buf(svf_para.tdr_para.tdi, 0, &svf_tdi_buffer[svf_buffer_index], i, svf_para.tdr_para.len);
1019                         i += svf_para.tdr_para.len;
1020
1021                         // add check data
1022                         if (svf_para.sdr_para.data_mask & XXR_TDO)
1023                         {
1024                                 // assemble dr mask data
1025                                 i = 0;
1026                                 buf_set_buf(svf_para.hdr_para.mask, 0, &svf_mask_buffer[svf_buffer_index], i, svf_para.hdr_para.len);
1027                                 i += svf_para.hdr_para.len;
1028                                 buf_set_buf(svf_para.sdr_para.mask, 0, &svf_mask_buffer[svf_buffer_index], i, svf_para.sdr_para.len);
1029                                 i += svf_para.sdr_para.len;
1030                                 buf_set_buf(svf_para.tdr_para.mask, 0, &svf_mask_buffer[svf_buffer_index], i, svf_para.tdr_para.len);
1031                                 i += svf_para.tdr_para.len;
1032                                 // assemble dr check data
1033                                 i = 0;
1034                                 buf_set_buf(svf_para.hdr_para.tdo, 0, &svf_tdo_buffer[svf_buffer_index], i, svf_para.hdr_para.len);
1035                                 i += svf_para.hdr_para.len;
1036                                 buf_set_buf(svf_para.sdr_para.tdo, 0, &svf_tdo_buffer[svf_buffer_index], i, svf_para.sdr_para.len);
1037                                 i += svf_para.sdr_para.len;
1038                                 buf_set_buf(svf_para.tdr_para.tdo, 0, &svf_tdo_buffer[svf_buffer_index], i, svf_para.tdr_para.len);
1039                                 i += svf_para.tdr_para.len;
1040
1041                                 svf_add_check_para(1, svf_buffer_index, i);
1042                         }
1043                         else
1044                         {
1045                                 svf_add_check_para(0, svf_buffer_index, i);
1046                         }
1047                         field.tap = tap;
1048                         field.num_bits = i;
1049                         field.out_value = &svf_tdi_buffer[svf_buffer_index];
1050                         field.in_value = &svf_tdi_buffer[svf_buffer_index];
1051                         /* NOTE:  doesn't use SVF-specified state paths */
1052                         jtag_add_plain_dr_scan(1, &field, svf_para.dr_end_state);
1053
1054                         svf_buffer_index += (i + 7) >> 3;
1055                 }
1056                 else if (SIR == command)
1057                 {
1058                         // check buffer size first, reallocate if necessary
1059                         i = svf_para.hir_para.len + svf_para.sir_para.len + svf_para.tir_para.len;
1060                         if ((svf_buffer_size - svf_buffer_index) < ((i + 7) >> 3))
1061                         {
1062 #if 1
1063                                 // simply print error message
1064                                 LOG_ERROR("buffer is not enough, report to author");
1065                                 return ERROR_FAIL;
1066 #else
1067                                 uint8_t *buffer_tmp;
1068
1069                                 // reallocate buffer
1070                                 buffer_tmp = (uint8_t *)malloc(svf_buffer_index + ((i + 7) >> 3));
1071                                 if (NULL == buffer_tmp)
1072                                 {
1073                                         LOG_ERROR("not enough memory");
1074                                         return ERROR_FAIL;
1075                                 }
1076                                 memcpy(buffer_tmp, svf_tdi_buffer, svf_buffer_index);
1077                                 // svf_tdi_buffer isn't NULL here
1078                                 free(svf_tdi_buffer);
1079                                 svf_tdi_buffer = buffer_tmp;
1080
1081                                 buffer_tmp = (uint8_t *)malloc(svf_buffer_index + ((i + 7) >> 3));
1082                                 if (NULL == buffer_tmp)
1083                                 {
1084                                         LOG_ERROR("not enough memory");
1085                                         return ERROR_FAIL;
1086                                 }
1087                                 memcpy(buffer_tmp, svf_tdo_buffer, svf_buffer_index);
1088                                 // svf_tdo_buffer isn't NULL here
1089                                 free(svf_tdo_buffer);
1090                                 svf_tdo_buffer = buffer_tmp;
1091
1092                                 buffer_tmp = (uint8_t *)malloc(svf_buffer_index + ((i + 7) >> 3));
1093                                 if (NULL == buffer_tmp)
1094                                 {
1095                                         LOG_ERROR("not enough memory");
1096                                         return ERROR_FAIL;
1097                                 }
1098                                 memcpy(buffer_tmp, svf_mask_buffer, svf_buffer_index);
1099                                 // svf_mask_buffer isn't NULL here
1100                                 free(svf_mask_buffer);
1101                                 svf_mask_buffer = buffer_tmp;
1102
1103                                 buffer_tmp = NULL;
1104                                 svf_buffer_size = svf_buffer_index + ((i + 7) >> 3);
1105 #endif
1106                         }
1107
1108                         // assemble ir data
1109                         i = 0;
1110                         buf_set_buf(svf_para.hir_para.tdi, 0, &svf_tdi_buffer[svf_buffer_index], i, svf_para.hir_para.len);
1111                         i += svf_para.hir_para.len;
1112                         buf_set_buf(svf_para.sir_para.tdi, 0, &svf_tdi_buffer[svf_buffer_index], i, svf_para.sir_para.len);
1113                         i += svf_para.sir_para.len;
1114                         buf_set_buf(svf_para.tir_para.tdi, 0, &svf_tdi_buffer[svf_buffer_index], i, svf_para.tir_para.len);
1115                         i += svf_para.tir_para.len;
1116
1117                         // add check data
1118                         if (svf_para.sir_para.data_mask & XXR_TDO)
1119                         {
1120                                 // assemble dr mask data
1121                                 i = 0;
1122                                 buf_set_buf(svf_para.hir_para.mask, 0, &svf_mask_buffer[svf_buffer_index], i, svf_para.hir_para.len);
1123                                 i += svf_para.hir_para.len;
1124                                 buf_set_buf(svf_para.sir_para.mask, 0, &svf_mask_buffer[svf_buffer_index], i, svf_para.sir_para.len);
1125                                 i += svf_para.sir_para.len;
1126                                 buf_set_buf(svf_para.tir_para.mask, 0, &svf_mask_buffer[svf_buffer_index], i, svf_para.tir_para.len);
1127                                 i += svf_para.tir_para.len;
1128                                 // assemble dr check data
1129                                 i = 0;
1130                                 buf_set_buf(svf_para.hir_para.tdo, 0, &svf_tdo_buffer[svf_buffer_index], i, svf_para.hir_para.len);
1131                                 i += svf_para.hir_para.len;
1132                                 buf_set_buf(svf_para.sir_para.tdo, 0, &svf_tdo_buffer[svf_buffer_index], i, svf_para.sir_para.len);
1133                                 i += svf_para.sir_para.len;
1134                                 buf_set_buf(svf_para.tir_para.tdo, 0, &svf_tdo_buffer[svf_buffer_index], i, svf_para.tir_para.len);
1135                                 i += svf_para.tir_para.len;
1136
1137                                 svf_add_check_para(1, svf_buffer_index, i);
1138                         }
1139                         else
1140                         {
1141                                 svf_add_check_para(0, svf_buffer_index, i);
1142                         }
1143                         field.tap = tap;
1144                         field.num_bits = i;
1145                         field.out_value = &svf_tdi_buffer[svf_buffer_index];
1146                         field.in_value = &svf_tdi_buffer[svf_buffer_index];
1147                         /* NOTE:  doesn't use SVF-specified state paths */
1148                         jtag_add_plain_ir_scan(1, &field, svf_para.ir_end_state);
1149
1150                         svf_buffer_index += (i + 7) >> 3;
1151                 }
1152                 break;
1153         case PIO:
1154         case PIOMAP:
1155                 LOG_ERROR("PIO and PIOMAP are not supported");
1156                 return ERROR_FAIL;
1157                 break;
1158         case RUNTEST:
1159                 // RUNTEST [run_state] run_count run_clk [min_time SEC [MAXIMUM max_time SEC]] [ENDSTATE end_state]
1160                 // RUNTEST [run_state] min_time SEC [MAXIMUM max_time SEC] [ENDSTATE end_state]
1161                 if ((num_of_argu < 3) && (num_of_argu > 11))
1162                 {
1163                         LOG_ERROR("invalid parameter of %s", argus[0]);
1164                         return ERROR_FAIL;
1165                 }
1166                 // init
1167                 run_count = 0;
1168                 min_time = 0;
1169                 max_time = 0;
1170                 i = 1;
1171
1172                 // run_state
1173                 i_tmp = tap_state_by_name(argus[i]);
1174                 if (i_tmp != TAP_INVALID)
1175                 {
1176                         if (svf_tap_state_is_stable(i_tmp))
1177                         {
1178                                 svf_para.runtest_run_state = i_tmp;
1179
1180                                 /* When a run_state is specified, the new
1181                                  * run_state becomes the default end_state.
1182                                  */
1183                                 svf_para.runtest_end_state = i_tmp;
1184                                 LOG_DEBUG("\trun_state = %s",
1185                                                 tap_state_name(i_tmp));
1186                                 i++;
1187                         }
1188                         else
1189                         {
1190                                 LOG_ERROR("%s: %s is not a stable state",
1191                                         argus[0], tap_state_name(i_tmp));
1192                                 return ERROR_FAIL;
1193                         }
1194                 }
1195
1196                 // run_count run_clk
1197                 if (((i + 2) <= num_of_argu) && strcmp(argus[i + 1], "SEC"))
1198                 {
1199                         if (!strcmp(argus[i + 1], "TCK"))
1200                         {
1201                                 // clock source is TCK
1202                                 run_count = atoi(argus[i]);
1203                                 LOG_DEBUG("\trun_count@TCK = %d", run_count);
1204                         }
1205                         else
1206                         {
1207                                 LOG_ERROR("%s not supported for clock", argus[i + 1]);
1208                                 return ERROR_FAIL;
1209                         }
1210                         i += 2;
1211                 }
1212                 // min_time SEC
1213                 if (((i + 2) <= num_of_argu) && !strcmp(argus[i + 1], "SEC"))
1214                 {
1215                         min_time = atof(argus[i]);
1216                         LOG_DEBUG("\tmin_time = %fs", min_time);
1217                         i += 2;
1218                 }
1219                 // MAXIMUM max_time SEC
1220                 if (((i + 3) <= num_of_argu) && !strcmp(argus[i], "MAXIMUM") && !strcmp(argus[i + 2], "SEC"))
1221                 {
1222                         max_time = atof(argus[i + 1]);
1223                         LOG_DEBUG("\tmax_time = %fs", max_time);
1224                         i += 3;
1225                 }
1226                 // ENDSTATE end_state
1227                 if (((i + 2) <= num_of_argu) && !strcmp(argus[i], "ENDSTATE"))
1228                 {
1229                         i_tmp = tap_state_by_name(argus[i + 1]);
1230
1231                         if (svf_tap_state_is_stable(i_tmp))
1232                         {
1233                                 svf_para.runtest_end_state = i_tmp;
1234                                 LOG_DEBUG("\tend_state = %s",
1235                                         tap_state_name(i_tmp));
1236                         }
1237                         else
1238                         {
1239                                 LOG_ERROR("%s: %s is not a stable state",
1240                                         argus[0], tap_state_name(i_tmp));
1241                                 return ERROR_FAIL;
1242                         }
1243                         i += 2;
1244                 }
1245                 // calculate run_count
1246                 if ((0 == run_count) && (min_time > 0))
1247                 {
1248                         run_count = min_time * svf_para.frequency;
1249                 }
1250                 // all parameter should be parsed
1251                 if (i == num_of_argu)
1252                 {
1253                         if (run_count > 0)
1254                         {
1255                                 // run_state and end_state is checked to be stable state
1256                                 // TODO: do runtest
1257 #if 1
1258                                 /* FIXME handle statemove failures */
1259                                 int retval;
1260
1261                                 // enter into run_state if necessary
1262                                 if (cmd_queue_cur_state != svf_para.runtest_run_state)
1263                                 {
1264                                         retval = svf_add_statemove(svf_para.runtest_run_state);
1265                                 }
1266
1267                                 // call jtag_add_clocks
1268                                 jtag_add_clocks(run_count);
1269
1270                                 // move to end_state if necessary
1271                                 if (svf_para.runtest_end_state != svf_para.runtest_run_state)
1272                                 {
1273                                         retval = svf_add_statemove(svf_para.runtest_end_state);
1274                                 }
1275 #else
1276                                 if (svf_para.runtest_run_state != TAP_IDLE)
1277                                 {
1278                                         LOG_ERROR("cannot runtest in %s state",
1279                                                 tap_state_name(svf_para.runtest_run_state));
1280                                         return ERROR_FAIL;
1281                                 }
1282
1283                                 jtag_add_runtest(run_count, svf_para.runtest_end_state);
1284 #endif
1285                         }
1286                 }
1287                 else
1288                 {
1289                         LOG_ERROR("fail to parse parameter of RUNTEST, %d out of %d is parsed", i, num_of_argu);
1290                         return ERROR_FAIL;
1291                 }
1292                 break;
1293         case STATE:
1294                 // STATE [pathstate1 [pathstate2 ...[pathstaten]]] stable_state
1295                 if (num_of_argu < 2)
1296                 {
1297                         LOG_ERROR("invalid parameter of %s", argus[0]);
1298                         return ERROR_FAIL;
1299                 }
1300                 if (num_of_argu > 2)
1301                 {
1302                         // STATE pathstate1 ... stable_state
1303                         path = (tap_state_t *)malloc((num_of_argu - 1) * sizeof(tap_state_t));
1304                         if (NULL == path)
1305                         {
1306                                 LOG_ERROR("not enough memory");
1307                                 return ERROR_FAIL;
1308                         }
1309                         num_of_argu--;          // num of path
1310                         i_tmp = 1;              /* path is from parameter 1 */
1311                         for (i = 0; i < num_of_argu; i++, i_tmp++)
1312                         {
1313                                 path[i] = tap_state_by_name(argus[i_tmp]);
1314                                 if (path[i] == TAP_INVALID)
1315                                 {
1316                                         LOG_ERROR("%s: %s is not a valid state",
1317                                                 argus[0], argus[i_tmp]);
1318                                         free(path);
1319                                         return ERROR_FAIL;
1320                                 }
1321                                 /* OpenOCD refuses paths containing TAP_RESET */
1322                                 if (TAP_RESET == path[i])
1323                                 {
1324                                         /* FIXME last state MUST be stable! */
1325                                         if (i > 0)
1326                                         {
1327                                                 jtag_add_pathmove(i, path);
1328                                         }
1329                                         jtag_add_tlr();
1330                                         num_of_argu -= i + 1;
1331                                         i = -1;
1332                                 }
1333                         }
1334                         if (num_of_argu > 0)
1335                         {
1336                                 // execute last path if necessary
1337                                 if (svf_tap_state_is_stable(path[num_of_argu - 1]))
1338                                 {
1339                                         // last state MUST be stable state
1340                                         jtag_add_pathmove(num_of_argu, path);
1341                                         LOG_DEBUG("\tmove to %s by path_move",
1342                                                 tap_state_name(path[num_of_argu - 1]));
1343                                 }
1344                                 else
1345                                 {
1346                                         LOG_ERROR("%s: %s is not a stable state",
1347                                                 argus[0],
1348                                                 tap_state_name(path[num_of_argu - 1]));
1349                                         free(path);
1350                                         return ERROR_FAIL;
1351                                 }
1352                         }
1353
1354                         free(path);
1355                         path = NULL;
1356                 }
1357                 else
1358                 {
1359                         // STATE stable_state
1360                         state = tap_state_by_name(argus[1]);
1361                         if (svf_tap_state_is_stable(state))
1362                         {
1363                                 LOG_DEBUG("\tmove to %s by svf_add_statemove",
1364                                                 tap_state_name(state));
1365                                 /* FIXME handle statemove failures */
1366                                 svf_add_statemove(state);
1367                         }
1368                         else
1369                         {
1370                                 LOG_ERROR("%s: %s is not a stable state",
1371                                         argus[0], tap_state_name(state));
1372                                 return ERROR_FAIL;
1373                         }
1374                 }
1375                 break;
1376         case TRST:
1377                 // TRST trst_mode
1378                 if (num_of_argu != 2)
1379                 {
1380                         LOG_ERROR("invalid parameter of %s", argus[0]);
1381                         return ERROR_FAIL;
1382                 }
1383                 if (svf_para.trst_mode != TRST_ABSENT)
1384                 {
1385                         if (ERROR_OK != svf_execute_tap())
1386                         {
1387                                 return ERROR_FAIL;
1388                         }
1389                         i_tmp = svf_find_string_in_array(argus[1],
1390                                         (char **)svf_trst_mode_name,
1391                                         ARRAY_SIZE(svf_trst_mode_name));
1392                         switch (i_tmp)
1393                         {
1394                         case TRST_ON:
1395                                 jtag_add_reset(1, 0);
1396                                 break;
1397                         case TRST_Z:
1398                         case TRST_OFF:
1399                                 jtag_add_reset(0, 0);
1400                                 break;
1401                         case TRST_ABSENT:
1402                                 break;
1403                         default:
1404                                 LOG_ERROR("unknown TRST mode: %s", argus[1]);
1405                                 return ERROR_FAIL;
1406                         }
1407                         svf_para.trst_mode = i_tmp;
1408                         LOG_DEBUG("\ttrst_mode = %s", svf_trst_mode_name[svf_para.trst_mode]);
1409                 }
1410                 else
1411                 {
1412                         LOG_ERROR("can not accpet TRST command if trst_mode is ABSENT");
1413                         return ERROR_FAIL;
1414                 }
1415                 break;
1416         default:
1417                 LOG_ERROR("invalid svf command: %s", argus[0]);
1418                 return ERROR_FAIL;
1419                 break;
1420         }
1421
1422         if (debug_level >= LOG_LVL_DEBUG)
1423         {
1424                 // for convenient debugging, execute tap if possible
1425                 if ((svf_buffer_index > 0) && \
1426                         (((command != STATE) && (command != RUNTEST)) || \
1427                         ((command == STATE) && (num_of_argu == 2))))
1428                 {
1429                         if (ERROR_OK != svf_execute_tap())
1430                         {
1431                                 return ERROR_FAIL;
1432                         }
1433
1434                         // output debug info
1435                         if ((SIR == command) || (SDR == command))
1436                         {
1437                                 int read_value;
1438                                 memcpy(&read_value, svf_tdi_buffer, sizeof(int));
1439                                 // in debug mode, data is from index 0
1440                                 int read_mask = svf_get_mask_u32(svf_check_tdo_para[0].bit_len);
1441                                 LOG_DEBUG("\tTDO read = 0x%X", read_value & read_mask);
1442                         }
1443                 }
1444         }
1445         else
1446         {
1447                 // for fast executing, execute tap if necessary
1448                 // half of the buffer is for the next command
1449                 if (((svf_buffer_index >= SVF_MAX_BUFFER_SIZE_TO_COMMIT) || (svf_check_tdo_para_index >= SVF_CHECK_TDO_PARA_SIZE / 2)) && \
1450                         (((command != STATE) && (command != RUNTEST)) || \
1451                         ((command == STATE) && (num_of_argu == 2))))
1452                 {
1453                         return svf_execute_tap();
1454                 }
1455         }
1456
1457         return ERROR_OK;
1458 }
1459
1460 static const struct command_registration svf_command_handlers[] = {
1461         {
1462                 .name = "svf",
1463                 .handler = &handle_svf_command,
1464                 .mode = COMMAND_EXEC,
1465                 .help = "Runs a SVF file.",
1466                 .usage = "<file>",
1467         },
1468         COMMAND_REGISTRATION_DONE
1469 };
1470
1471 int svf_register_commands(struct command_context *cmd_ctx)
1472 {
1473         return register_commands(cmd_ctx, NULL, svf_command_handlers);
1474 }