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   1 /***************************************************************************
   2  *   Copyright (C) 2005 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 #include "replacements.h"
  25
  26 #include "jtag.h"
  27
  28 #include "command.h"
  29 #include "log.h"
  30 #include "interpreter.h"
  31
  32 #include "stdlib.h"
  33 #include "string.h"
  34 #include <unistd.h>
  35
  36
  37
  38 /* note that this is not marked as static as it must be available from outside jtag.c for those
  39    that implement the jtag_xxx() minidriver layer
  40 */
  41 int jtag_error=ERROR_OK;
  42
  43
  44 char* tap_state_strings[16] =
  45 {
  46         "tlr",
  47         "sds", "cd", "sd", "e1d", "pd", "e2d", "ud",
  48         "rti",
  49         "sis", "ci", "si", "e1i", "pi", "e2i", "ui"
  50 };
  51
  52 typedef struct cmd_queue_page_s
  53 {
  54         void *address;
  55         size_t used;
  56         struct cmd_queue_page_s *next;
  57 } cmd_queue_page_t;
  58
  59 #define CMD_QUEUE_PAGE_SIZE (1024 * 1024)
  60 static cmd_queue_page_t *cmd_queue_pages = NULL;
  61
  62 /* tap_move[i][j]: tap movement command to go from state i to state j
  63  * 0: Test-Logic-Reset
  64  * 1: Run-Test/Idle
  65  * 2: Shift-DR
  66  * 3: Pause-DR
  67  * 4: Shift-IR
  68  * 5: Pause-IR
  69  *
  70  * SD->SD and SI->SI have to be caught in interface specific code
  71  */
  72 u8 tap_move[6][6] =
  73 {
  74 /*        TLR   RTI   SD    PD    SI    PI             */
  75         {0x7f, 0x00, 0x17, 0x0a, 0x1b, 0x16},   /* TLR */
  76         {0x7f, 0x00, 0x25, 0x05, 0x2b, 0x0b},   /* RTI */
  77         {0x7f, 0x31, 0x00, 0x01, 0x0f, 0x2f},   /* SD  */
  78         {0x7f, 0x30, 0x20, 0x17, 0x1e, 0x2f},   /* PD  */
  79         {0x7f, 0x31, 0x07, 0x17, 0x00, 0x01},   /* SI  */
  80         {0x7f, 0x30, 0x1c, 0x17, 0x20, 0x2f}    /* PI  */
  81 };
  82
  83 int tap_move_map[16] = {
  84         0, -1, -1,  2, -1,  3, -1, -1,
  85         1, -1, -1,  4, -1,  5, -1, -1
  86 };
  87
  88 tap_transition_t tap_transitions[16] =
  89 {
  90         {TAP_TLR, TAP_RTI},             /* TLR */
  91         {TAP_SIS, TAP_CD},              /* SDS */
  92         {TAP_E1D, TAP_SD},              /* CD  */
  93         {TAP_E1D, TAP_SD},              /* SD  */
  94         {TAP_UD,  TAP_PD},              /* E1D */
  95         {TAP_E2D, TAP_PD},              /* PD  */
  96         {TAP_UD,  TAP_SD},              /* E2D */
  97         {TAP_SDS, TAP_RTI},             /* UD  */
  98         {TAP_SDS, TAP_RTI},             /* RTI */
  99         {TAP_TLR, TAP_CI},              /* SIS */
 100         {TAP_E1I, TAP_SI},              /* CI  */
 101         {TAP_E1I, TAP_SI},              /* SI  */
 102         {TAP_UI,  TAP_PI},              /* E1I */
 103         {TAP_E2I, TAP_PI},              /* PI  */
 104         {TAP_UI,  TAP_SI},              /* E2I */
 105         {TAP_SDS, TAP_RTI}              /* UI  */
 106 };
 107
 108 char* jtag_event_strings[] =
 109 {
 110         "SRST asserted",
 111         "TRST asserted",
 112         "SRST released",
 113         "TRST released"
 114 };
 115
 116 enum tap_state end_state = TAP_TLR;
 117 enum tap_state cur_state = TAP_TLR;
 118 int jtag_trst = 0;
 119 int jtag_srst = 0;
 120
 121 jtag_command_t *jtag_command_queue = NULL;
 122 jtag_command_t **last_comand_pointer = &jtag_command_queue;
 123 jtag_device_t *jtag_devices = NULL;
 124 int jtag_num_devices = 0;
 125 int jtag_ir_scan_size = 0;
 126 enum reset_types jtag_reset_config = RESET_NONE;
 127 enum tap_state cmd_queue_end_state = TAP_TLR;
 128 enum tap_state cmd_queue_cur_state = TAP_TLR;
 129
 130 int jtag_verify_capture_ir = 1;
 131
 132 /* how long the OpenOCD should wait before attempting JTAG communication after reset lines deasserted (in ms) */
 133 int jtag_nsrst_delay = 0; /* default to no nSRST delay */
 134 int jtag_ntrst_delay = 0; /* default to no nTRST delay */
 135
 136 /* maximum number of JTAG devices expected in the chain
 137  */
 138 #define JTAG_MAX_CHAIN_SIZE 20
 139
 140 /* callbacks to inform high-level handlers about JTAG state changes */
 141 jtag_event_callback_t *jtag_event_callbacks;
 142
 143 /* jtag interfaces (parport, FTDI-USB, TI-USB, ...)
 144  */
 145 #if BUILD_PARPORT == 1
 146         extern jtag_interface_t parport_interface;
 147 #endif
 148
 149 #if BUILD_FT2232_FTD2XX == 1
 150         extern jtag_interface_t ft2232_interface;
 151 #endif
 152
 153 #if BUILD_FT2232_LIBFTDI == 1
 154         extern jtag_interface_t ft2232_interface;
 155 #endif
 156
 157 #if BUILD_AMTJTAGACCEL == 1
 158         extern jtag_interface_t amt_jtagaccel_interface;
 159 #endif
 160
 161 #if BUILD_EP93XX == 1
 162         extern jtag_interface_t ep93xx_interface;
 163 #endif
 164
 165 #if BUILD_AT91RM9200 == 1
 166         extern jtag_interface_t at91rm9200_interface;
 167 #endif
 168
 169 #if BUILD_GW16012 == 1
 170         extern jtag_interface_t gw16012_interface;
 171 #endif
 172
 173 #if BUILD_PRESTO_LIBFTDI == 1 || BUILD_PRESTO_FTD2XX == 1
 174         extern jtag_interface_t presto_interface;
 175 #endif
 176
 177 #if BUILD_USBPROG == 1
 178         extern jtag_interface_t usbprog_interface;
 179 #endif
 180
 181 jtag_interface_t *jtag_interfaces[] = {
 182 #if BUILD_PARPORT == 1
 183         &parport_interface,
 184 #endif
 185 #if BUILD_FT2232_FTD2XX == 1
 186         &ft2232_interface,
 187 #endif
 188 #if BUILD_FT2232_LIBFTDI == 1
 189         &ft2232_interface,
 190 #endif
 191 #if BUILD_AMTJTAGACCEL == 1
 192         &amt_jtagaccel_interface,
 193 #endif
 194 #if BUILD_EP93XX == 1
 195         &ep93xx_interface,
 196 #endif
 197 #if BUILD_AT91RM9200 == 1
 198         &at91rm9200_interface,
 199 #endif
 200 #if BUILD_GW16012 == 1
 201         &gw16012_interface,
 202 #endif
 203 #if BUILD_PRESTO_LIBFTDI == 1 || BUILD_PRESTO_FTD2XX == 1
 204         &presto_interface,
 205 #endif
 206 #if BUILD_USBPROG == 1
 207         &usbprog_interface,
 208 #endif
 209         NULL,
 210 };
 211
 212 jtag_interface_t *jtag = NULL;
 213
 214 /* configuration */
 215 jtag_interface_t *jtag_interface = NULL;
 216 int jtag_speed = 0;
 217
 218
 219 /* forward declarations */
 220 int jtag_add_statemove(enum tap_state endstate);
 221 int jtag_add_pathmove(int num_states, enum tap_state *path);
 222 int jtag_add_runtest(int num_cycles, enum tap_state endstate);
 223 int jtag_add_reset(int trst, int srst);
 224 int jtag_add_end_state(enum tap_state endstate);
 225 int jtag_add_sleep(u32 us);
 226 int jtag_execute_queue(void);
 227 int jtag_cancel_queue(void);
 228
 229 /* jtag commands */
 230 int handle_interface_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 231 int handle_jtag_speed_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 232 int handle_jtag_device_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 233 int handle_reset_config_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 234 int handle_jtag_nsrst_delay_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 235 int handle_jtag_ntrst_delay_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 236
 237 int handle_scan_chain_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 238
 239 int handle_endstate_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 240 int handle_jtag_reset_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 241 int handle_runtest_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 242 int handle_statemove_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 243 int handle_irscan_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 244 int handle_drscan_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 245
 246 int handle_verify_ircapture_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 247
 248 int jtag_register_event_callback(int (*callback)(enum jtag_event event, void *priv), void *priv)
 249 {
 250         jtag_event_callback_t **callbacks_p = &jtag_event_callbacks;
 251
 252         if (callback == NULL)
 253         {
 254                 return ERROR_INVALID_ARGUMENTS;
 255         }
 256
 257         if (*callbacks_p)
 258         {
 259                 while ((*callbacks_p)->next)
 260                         callbacks_p = &((*callbacks_p)->next);
 261                 callbacks_p = &((*callbacks_p)->next);
 262         }
 263
 264         (*callbacks_p) = malloc(sizeof(jtag_event_callback_t));
 265         (*callbacks_p)->callback = callback;
 266         (*callbacks_p)->priv = priv;
 267         (*callbacks_p)->next = NULL;
 268
 269         return ERROR_OK;
 270 }
 271
 272 int jtag_unregister_event_callback(int (*callback)(enum jtag_event event, void *priv))
 273 {
 274         jtag_event_callback_t **callbacks_p = &jtag_event_callbacks;
 275
 276         if (callback == NULL)
 277         {
 278                 return ERROR_INVALID_ARGUMENTS;
 279         }
 280
 281         while (*callbacks_p)
 282         {
 283                 jtag_event_callback_t **next = &((*callbacks_p)->next);
 284                 if ((*callbacks_p)->callback == callback)
 285                 {
 286                         free(*callbacks_p);
 287                         *callbacks_p = *next;
 288                 }
 289                 callbacks_p = next;
 290         }
 291
 292         return ERROR_OK;
 293 }
 294
 295 int jtag_call_event_callbacks(enum jtag_event event)
 296 {
 297         jtag_event_callback_t *callback = jtag_event_callbacks;
 298
 299         DEBUG("jtag event: %s", jtag_event_strings[event]);
 300
 301         while (callback)
 302         {
 303                 callback->callback(event, callback->priv);
 304                 callback = callback->next;
 305         }
 306
 307         return ERROR_OK;
 308 }
 309
 310 /* returns a pointer to the pointer of the last command in queue
 311  * this may be a pointer to the root pointer (jtag_command_queue)
 312  * or to the next member of the last but one command
 313  */
 314 jtag_command_t** jtag_get_last_command_p(void)
 315 {
 316 /*      jtag_command_t *cmd = jtag_command_queue;
 317
 318         if (cmd)
 319                 while (cmd->next)
 320                         cmd = cmd->next;
 321         else
 322                 return &jtag_command_queue;
 323
 324         return &cmd->next;*/
 325
 326         return last_comand_pointer;
 327 }
 328
 329 /* returns a pointer to the n-th device in the scan chain */
 330 jtag_device_t* jtag_get_device(int num)
 331 {
 332         jtag_device_t *device = jtag_devices;
 333         int i = 0;
 334
 335         while (device)
 336         {
 337                 if (num == i)
 338                         return device;
 339                 device = device->next;
 340                 i++;
 341         }
 342
 343         ERROR("jtag device number %d not defined", num);
 344         exit(-1);
 345 }
 346
 347 void* cmd_queue_alloc(size_t size)
 348 {
 349         cmd_queue_page_t **p_page = &cmd_queue_pages;
 350         int offset;
 351
 352         if (*p_page)
 353         {
 354                 while ((*p_page)->next)
 355                         p_page = &((*p_page)->next);
 356                 if (CMD_QUEUE_PAGE_SIZE - (*p_page)->used < size)
 357                         p_page = &((*p_page)->next);
 358         }
 359
 360         if (!*p_page)
 361         {
 362                 *p_page = malloc(sizeof(cmd_queue_page_t));
 363                 (*p_page)->used = 0;
 364                 (*p_page)->address = malloc(CMD_QUEUE_PAGE_SIZE);
 365                 (*p_page)->next = NULL;
 366         }
 367
 368         offset = (*p_page)->used;
 369         (*p_page)->used += size;
 370
 371         u8 *t=(u8 *)((*p_page)->address);
 372         return t + offset;
 373 }
 374
 375 void cmd_queue_free()
 376 {
 377         cmd_queue_page_t *page = cmd_queue_pages;
 378
 379         while (page)
 380         {
 381                 cmd_queue_page_t *last = page;
 382                 free(page->address);
 383                 page = page->next;
 384                 free(last);
 385         }
 386
 387         cmd_queue_pages = NULL;
 388 }
 389
 390 int jtag_add_ir_scan(int num_fields, scan_field_t *fields, enum tap_state state)
 391 {
 392         if (jtag_trst == 1)
 393         {
 394                 WARNING("JTAG command queued, while TRST is low (TAP in reset)");
 395                 jtag_error=ERROR_JTAG_TRST_ASSERTED;
 396                 return ERROR_JTAG_TRST_ASSERTED;
 397         }
 398
 399         if (state != -1)
 400                 cmd_queue_end_state = state;
 401
 402         if (cmd_queue_cur_state == TAP_TLR && cmd_queue_end_state != TAP_TLR)
 403                 jtag_call_event_callbacks(JTAG_TRST_RELEASED);
 404
 405         if (cmd_queue_end_state == TAP_TLR)
 406                 jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
 407
 408         cmd_queue_cur_state = cmd_queue_end_state;
 409
 410         int retval=interface_jtag_add_ir_scan(num_fields, fields, cmd_queue_end_state);
 411         if (retval!=ERROR_OK)
 412                 jtag_error=retval;
 413         return retval;
 414 }
 415
 416 int MINIDRIVER(interface_jtag_add_ir_scan)(int num_fields, scan_field_t *fields, enum tap_state state)
 417 {
 418         jtag_command_t **last_cmd;
 419         jtag_device_t *device;
 420         int i, j;
 421         int scan_size = 0;
 422
 423
 424         last_cmd = jtag_get_last_command_p();
 425
 426         /* allocate memory for a new list member */
 427         *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
 428         (*last_cmd)->next = NULL;
 429         last_comand_pointer = &((*last_cmd)->next);
 430         (*last_cmd)->type = JTAG_SCAN;
 431
 432         /* allocate memory for ir scan command */
 433         (*last_cmd)->cmd.scan = cmd_queue_alloc(sizeof(scan_command_t));
 434         (*last_cmd)->cmd.scan->ir_scan = 1;
 435         (*last_cmd)->cmd.scan->num_fields = jtag_num_devices;   /* one field per device */
 436         (*last_cmd)->cmd.scan->fields = cmd_queue_alloc(jtag_num_devices * sizeof(scan_field_t));
 437         (*last_cmd)->cmd.scan->end_state = state;
 438
 439         for (i = 0; i < jtag_num_devices; i++)
 440         {
 441                 int found = 0;
 442                 device = jtag_get_device(i);
 443                 scan_size = device->ir_length;
 444                 (*last_cmd)->cmd.scan->fields[i].device = i;
 445                 (*last_cmd)->cmd.scan->fields[i].num_bits = scan_size;
 446                 (*last_cmd)->cmd.scan->fields[i].in_value = NULL;
 447                 (*last_cmd)->cmd.scan->fields[i].in_handler = NULL;     /* disable verification by default */
 448
 449                 /* search the list */
 450                 for (j = 0; j < num_fields; j++)
 451                 {
 452                         if (i == fields[j].device)
 453                         {
 454                                 found = 1;
 455                                 (*last_cmd)->cmd.scan->fields[i].out_value = buf_cpy(fields[j].out_value, cmd_queue_alloc(CEIL(scan_size, 8)), scan_size);
 456                                 (*last_cmd)->cmd.scan->fields[i].out_mask = buf_cpy(fields[j].out_mask, cmd_queue_alloc(CEIL(scan_size, 8)), scan_size);
 457
 458                                 if (jtag_verify_capture_ir)
 459                                 {
 460                                         if (fields[j].in_handler==NULL)
 461                                         {
 462                                                 jtag_set_check_value((*last_cmd)->cmd.scan->fields+i, device->expected, device->expected_mask, NULL);
 463                                         } else
 464                                         {
 465                                                 (*last_cmd)->cmd.scan->fields[i].in_handler = fields[j].in_handler;
 466                                                 (*last_cmd)->cmd.scan->fields[i].in_handler_priv = fields[j].in_handler_priv;
 467                                                 (*last_cmd)->cmd.scan->fields[i].in_check_value = device->expected;
 468                                                 (*last_cmd)->cmd.scan->fields[i].in_check_mask = device->expected_mask;
 469                                         }
 470                                 }
 471
 472                                 device->bypass = 0;
 473                                 break;
 474                         }
 475                 }
 476
 477                 if (!found)
 478                 {
 479                         /* if a device isn't listed, set it to BYPASS */
 480                         (*last_cmd)->cmd.scan->fields[i].out_value = buf_set_ones(cmd_queue_alloc(CEIL(scan_size, 8)), scan_size);
 481                         (*last_cmd)->cmd.scan->fields[i].out_mask = NULL;
 482                         device->bypass = 1;
 483
 484                 }
 485
 486                 /* update device information */
 487                 buf_cpy((*last_cmd)->cmd.scan->fields[i].out_value, jtag_get_device(i)->cur_instr, scan_size);
 488         }
 489
 490         return ERROR_OK;
 491 }
 492
 493 int jtag_add_plain_ir_scan(int num_fields, scan_field_t *fields, enum tap_state state)
 494 {
 495         if (jtag_trst == 1)
 496         {
 497                 WARNING("JTAG command queued, while TRST is low (TAP in reset)");
 498                 return jtag_error=ERROR_JTAG_TRST_ASSERTED;
 499         }
 500
 501         if (state != -1)
 502                 cmd_queue_end_state = state;
 503
 504         if (cmd_queue_cur_state == TAP_TLR && cmd_queue_end_state != TAP_TLR)
 505                 jtag_call_event_callbacks(JTAG_TRST_RELEASED);
 506
 507         if (cmd_queue_end_state == TAP_TLR)
 508                 jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
 509
 510         cmd_queue_cur_state = cmd_queue_end_state;
 511
 512         return interface_jtag_add_plain_ir_scan(num_fields, fields, cmd_queue_end_state);
 513 }
 514
 515 int MINIDRIVER(interface_jtag_add_plain_ir_scan)(int num_fields, scan_field_t *fields, enum tap_state state)
 516 {
 517         int i;
 518         jtag_command_t **last_cmd;
 519
 520         last_cmd = jtag_get_last_command_p();
 521
 522         /* allocate memory for a new list member */
 523         *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
 524         (*last_cmd)->next = NULL;
 525         last_comand_pointer = &((*last_cmd)->next);
 526         (*last_cmd)->type = JTAG_SCAN;
 527
 528         /* allocate memory for ir scan command */
 529         (*last_cmd)->cmd.scan = cmd_queue_alloc(sizeof(scan_command_t));
 530         (*last_cmd)->cmd.scan->ir_scan = 1;
 531         (*last_cmd)->cmd.scan->num_fields = num_fields;
 532         (*last_cmd)->cmd.scan->fields = cmd_queue_alloc(num_fields * sizeof(scan_field_t));
 533         (*last_cmd)->cmd.scan->end_state = state;
 534
 535         for (i = 0; i < num_fields; i++)
 536         {
 537                 int num_bits = fields[i].num_bits;
 538                 int num_bytes = CEIL(fields[i].num_bits, 8);
 539                 (*last_cmd)->cmd.scan->fields[i].device = fields[i].device;
 540                 (*last_cmd)->cmd.scan->fields[i].num_bits = num_bits;
 541                 (*last_cmd)->cmd.scan->fields[i].out_value = buf_cpy(fields[i].out_value, cmd_queue_alloc(num_bytes), num_bits);
 542                 (*last_cmd)->cmd.scan->fields[i].out_mask = buf_cpy(fields[i].out_mask, cmd_queue_alloc(num_bytes), num_bits);
 543                 (*last_cmd)->cmd.scan->fields[i].in_value = fields[i].in_value;
 544                 (*last_cmd)->cmd.scan->fields[i].in_check_value = fields[i].in_check_value;
 545                 (*last_cmd)->cmd.scan->fields[i].in_check_mask = fields[i].in_check_mask;
 546                 (*last_cmd)->cmd.scan->fields[i].in_handler = NULL;
 547                 (*last_cmd)->cmd.scan->fields[i].in_handler_priv = NULL;
 548         }
 549         return ERROR_OK;
 550 }
 551
 552 int jtag_add_dr_scan(int num_fields, scan_field_t *fields, enum tap_state state)
 553 {
 554         if (jtag_trst == 1)
 555         {
 556                 WARNING("JTAG command queued, while TRST is low (TAP in reset)");
 557                 return jtag_error=ERROR_JTAG_TRST_ASSERTED;
 558         }
 559
 560         if (state != -1)
 561                 cmd_queue_end_state = state;
 562
 563         if (cmd_queue_cur_state == TAP_TLR && cmd_queue_end_state != TAP_TLR)
 564                 jtag_call_event_callbacks(JTAG_TRST_RELEASED);
 565
 566         if (cmd_queue_end_state == TAP_TLR)
 567                 jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
 568
 569         cmd_queue_cur_state = cmd_queue_end_state;
 570
 571         return interface_jtag_add_dr_scan(num_fields, fields, cmd_queue_end_state);
 572 }
 573
 574 int MINIDRIVER(interface_jtag_add_dr_scan)(int num_fields, scan_field_t *fields, enum tap_state state)
 575 {
 576         int i, j;
 577         int bypass_devices = 0;
 578         int field_count = 0;
 579         int scan_size;
 580
 581         jtag_command_t **last_cmd = jtag_get_last_command_p();
 582         jtag_device_t *device = jtag_devices;
 583
 584         /* count devices in bypass */
 585         while (device)
 586         {
 587                 if (device->bypass)
 588                         bypass_devices++;
 589                 device = device->next;
 590         }
 591
 592         /* allocate memory for a new list member */
 593         *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
 594         last_comand_pointer = &((*last_cmd)->next);
 595         (*last_cmd)->next = NULL;
 596         (*last_cmd)->type = JTAG_SCAN;
 597
 598         /* allocate memory for dr scan command */
 599         (*last_cmd)->cmd.scan = cmd_queue_alloc(sizeof(scan_command_t));
 600         (*last_cmd)->cmd.scan->ir_scan = 0;
 601         (*last_cmd)->cmd.scan->num_fields = num_fields + bypass_devices;
 602         (*last_cmd)->cmd.scan->fields = cmd_queue_alloc((num_fields + bypass_devices) * sizeof(scan_field_t));
 603         (*last_cmd)->cmd.scan->end_state = state;
 604
 605         for (i = 0; i < jtag_num_devices; i++)
 606         {
 607                 int found = 0;
 608                 (*last_cmd)->cmd.scan->fields[field_count].device = i;
 609
 610                 for (j = 0; j < num_fields; j++)
 611                 {
 612                         if (i == fields[j].device)
 613                         {
 614                                 found = 1;
 615                                 scan_size = fields[j].num_bits;
 616                                 (*last_cmd)->cmd.scan->fields[field_count].num_bits = scan_size;
 617                                 (*last_cmd)->cmd.scan->fields[field_count].out_value = buf_cpy(fields[j].out_value, cmd_queue_alloc(CEIL(scan_size, 8)), scan_size);
 618                                 (*last_cmd)->cmd.scan->fields[field_count].out_mask = buf_cpy(fields[j].out_mask, cmd_queue_alloc(CEIL(scan_size, 8)), scan_size);
 619                                 (*last_cmd)->cmd.scan->fields[field_count].in_value = fields[j].in_value;
 620                                 (*last_cmd)->cmd.scan->fields[field_count].in_check_value = fields[j].in_check_value;
 621                                 (*last_cmd)->cmd.scan->fields[field_count].in_check_mask = fields[j].in_check_mask;
 622                                 (*last_cmd)->cmd.scan->fields[field_count].in_handler = fields[j].in_handler;
 623                                 (*last_cmd)->cmd.scan->fields[field_count++].in_handler_priv = fields[j].in_handler_priv;
 624                         }
 625                 }
 626                 if (!found)
 627                 {
 628 #ifdef _DEBUG_JTAG_IO_
 629                         /* if a device isn't listed, the BYPASS register should be selected */
 630                         if (!jtag_get_device(i)->bypass)
 631                         {
 632                                 ERROR("BUG: no scan data for a device not in BYPASS");
 633                                 exit(-1);
 634                         }
 635 #endif
 636                         /* program the scan field to 1 bit length, and ignore it's value */
 637                         (*last_cmd)->cmd.scan->fields[field_count].num_bits = 1;
 638                         (*last_cmd)->cmd.scan->fields[field_count].out_value = NULL;
 639                         (*last_cmd)->cmd.scan->fields[field_count].out_mask = NULL;
 640                         (*last_cmd)->cmd.scan->fields[field_count].in_value = NULL;
 641                         (*last_cmd)->cmd.scan->fields[field_count].in_check_value = NULL;
 642                         (*last_cmd)->cmd.scan->fields[field_count].in_check_mask = NULL;
 643                         (*last_cmd)->cmd.scan->fields[field_count].in_handler = NULL;
 644                         (*last_cmd)->cmd.scan->fields[field_count++].in_handler_priv = NULL;
 645                 }
 646                 else
 647                 {
 648 #ifdef _DEBUG_JTAG_IO_
 649                         /* if a device is listed, the BYPASS register must not be selected */
 650                         if (jtag_get_device(i)->bypass)
 651                         {
 652                                 ERROR("BUG: scan data for a device in BYPASS");
 653                                 exit(-1);
 654                         }
 655 #endif
 656                 }
 657         }
 658         return ERROR_OK;
 659 }
 660
 661 void MINIDRIVER(interface_jtag_add_dr_out)(int device_num,
 662                 int num_fields,
 663                 int *num_bits,
 664                 u32 *value,
 665                 enum tap_state end_state)
 666 {
 667         int i;
 668         int field_count = 0;
 669         int scan_size;
 670         int bypass_devices = 0;
 671
 672         jtag_command_t **last_cmd = jtag_get_last_command_p();
 673         jtag_device_t *device = jtag_devices;
 674         /* count devices in bypass */
 675         while (device)
 676         {
 677                 if (device->bypass)
 678                         bypass_devices++;
 679                 device = device->next;
 680         }
 681
 682         /* allocate memory for a new list member */
 683         *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
 684         last_comand_pointer = &((*last_cmd)->next);
 685         (*last_cmd)->next = NULL;
 686         (*last_cmd)->type = JTAG_SCAN;
 687
 688         /* allocate memory for dr scan command */
 689         (*last_cmd)->cmd.scan = cmd_queue_alloc(sizeof(scan_command_t));
 690         (*last_cmd)->cmd.scan->ir_scan = 0;
 691         (*last_cmd)->cmd.scan->num_fields = num_fields + bypass_devices;
 692         (*last_cmd)->cmd.scan->fields = cmd_queue_alloc((num_fields + bypass_devices) * sizeof(scan_field_t));
 693         (*last_cmd)->cmd.scan->end_state = end_state;
 694
 695         for (i = 0; i < jtag_num_devices; i++)
 696         {
 697                 (*last_cmd)->cmd.scan->fields[field_count].device = i;
 698
 699                 if (i == device_num)
 700                 {
 701                         int j;
 702 #ifdef _DEBUG_JTAG_IO_
 703                         /* if a device is listed, the BYPASS register must not be selected */
 704                         if (jtag_get_device(i)->bypass)
 705                         {
 706                                 ERROR("BUG: scan data for a device in BYPASS");
 707                                 exit(-1);
 708                         }
 709 #endif
 710                         for (j = 0; j < num_fields; j++)
 711                         {
 712                                 u8 out_value[4];
 713                                 scan_size = num_bits[j];
 714                                 buf_set_u32(out_value, 0, scan_size, value[j]);
 715                                 (*last_cmd)->cmd.scan->fields[field_count].num_bits = scan_size;
 716                                 (*last_cmd)->cmd.scan->fields[field_count].out_value = buf_cpy(out_value, cmd_queue_alloc(CEIL(scan_size, 8)), scan_size);
 717                                 (*last_cmd)->cmd.scan->fields[field_count].out_mask = NULL;
 718                                 (*last_cmd)->cmd.scan->fields[field_count].in_value = NULL;
 719                                 (*last_cmd)->cmd.scan->fields[field_count].in_check_value = NULL;
 720                                 (*last_cmd)->cmd.scan->fields[field_count].in_check_mask = NULL;
 721                                 (*last_cmd)->cmd.scan->fields[field_count].in_handler = NULL;
 722                                 (*last_cmd)->cmd.scan->fields[field_count++].in_handler_priv = NULL;
 723                         }
 724                 } else
 725                 {
 726 #ifdef _DEBUG_JTAG_IO_
 727                         /* if a device isn't listed, the BYPASS register should be selected */
 728                         if (!jtag_get_device(i)->bypass)
 729                         {
 730                                 ERROR("BUG: no scan data for a device not in BYPASS");
 731                                 exit(-1);
 732                         }
 733 #endif
 734                         /* program the scan field to 1 bit length, and ignore it's value */
 735                         (*last_cmd)->cmd.scan->fields[field_count].num_bits = 1;
 736                         (*last_cmd)->cmd.scan->fields[field_count].out_value = NULL;
 737                         (*last_cmd)->cmd.scan->fields[field_count].out_mask = NULL;
 738                         (*last_cmd)->cmd.scan->fields[field_count].in_value = NULL;
 739                         (*last_cmd)->cmd.scan->fields[field_count].in_check_value = NULL;
 740                         (*last_cmd)->cmd.scan->fields[field_count].in_check_mask = NULL;
 741                         (*last_cmd)->cmd.scan->fields[field_count].in_handler = NULL;
 742                         (*last_cmd)->cmd.scan->fields[field_count++].in_handler_priv = NULL;
 743                 }
 744         }
 745 }
 746
 747
 748
 749
 750 int jtag_add_plain_dr_scan(int num_fields, scan_field_t *fields, enum tap_state state)
 751 {
 752         if (jtag_trst == 1)
 753         {
 754                 WARNING("JTAG command queued, while TRST is low (TAP in reset)");
 755                 return jtag_error=ERROR_JTAG_TRST_ASSERTED;
 756         }
 757
 758         if (state != -1)
 759                 cmd_queue_end_state = state;
 760
 761         if (cmd_queue_cur_state == TAP_TLR && cmd_queue_end_state != TAP_TLR)
 762                 jtag_call_event_callbacks(JTAG_TRST_RELEASED);
 763
 764         if (cmd_queue_end_state == TAP_TLR)
 765                 jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
 766
 767         cmd_queue_cur_state = cmd_queue_end_state;
 768
 769         return interface_jtag_add_plain_dr_scan(num_fields, fields, cmd_queue_end_state);
 770 }
 771
 772 int MINIDRIVER(interface_jtag_add_plain_dr_scan)(int num_fields, scan_field_t *fields, enum tap_state state)
 773 {
 774         int i;
 775         jtag_command_t **last_cmd = jtag_get_last_command_p();
 776
 777         /* allocate memory for a new list member */
 778         *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
 779         last_comand_pointer = &((*last_cmd)->next);
 780         (*last_cmd)->next = NULL;
 781         (*last_cmd)->type = JTAG_SCAN;
 782
 783         /* allocate memory for scan command */
 784         (*last_cmd)->cmd.scan = cmd_queue_alloc(sizeof(scan_command_t));
 785         (*last_cmd)->cmd.scan->ir_scan = 0;
 786         (*last_cmd)->cmd.scan->num_fields = num_fields;
 787         (*last_cmd)->cmd.scan->fields = cmd_queue_alloc(num_fields * sizeof(scan_field_t));
 788         (*last_cmd)->cmd.scan->end_state = state;
 789
 790         for (i = 0; i < num_fields; i++)
 791         {
 792                 int num_bits = fields[i].num_bits;
 793                 int num_bytes = CEIL(fields[i].num_bits, 8);
 794                 (*last_cmd)->cmd.scan->fields[i].device = fields[i].device;
 795                 (*last_cmd)->cmd.scan->fields[i].num_bits = num_bits;
 796                 (*last_cmd)->cmd.scan->fields[i].out_value = buf_cpy(fields[i].out_value, cmd_queue_alloc(num_bytes), num_bits);
 797                 (*last_cmd)->cmd.scan->fields[i].out_mask = buf_cpy(fields[i].out_mask, cmd_queue_alloc(num_bytes), num_bits);
 798                 (*last_cmd)->cmd.scan->fields[i].in_value = fields[i].in_value;
 799                 (*last_cmd)->cmd.scan->fields[i].in_check_value = fields[i].in_check_value;
 800                 (*last_cmd)->cmd.scan->fields[i].in_check_mask = fields[i].in_check_mask;
 801                 (*last_cmd)->cmd.scan->fields[i].in_handler = fields[i].in_handler;
 802                 (*last_cmd)->cmd.scan->fields[i].in_handler_priv = fields[i].in_handler_priv;
 803         }
 804
 805         return ERROR_OK;
 806 }
 807 int jtag_add_statemove(enum tap_state state)
 808 {
 809         if (jtag_trst == 1)
 810         {
 811                 WARNING("JTAG command queued, while TRST is low (TAP in reset)");
 812                 return jtag_error=ERROR_JTAG_TRST_ASSERTED;
 813         }
 814
 815         if (state != -1)
 816                 cmd_queue_end_state = state;
 817
 818         if (cmd_queue_cur_state == TAP_TLR && cmd_queue_end_state != TAP_TLR)
 819                 jtag_call_event_callbacks(JTAG_TRST_RELEASED);
 820
 821         if (cmd_queue_end_state == TAP_TLR)
 822                 jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
 823
 824         cmd_queue_cur_state = cmd_queue_end_state;
 825
 826         return interface_jtag_add_statemove(cmd_queue_end_state);
 827 }
 828
 829 int MINIDRIVER(interface_jtag_add_statemove)(enum tap_state state)
 830 {
 831         jtag_command_t **last_cmd = jtag_get_last_command_p();
 832
 833         /* allocate memory for a new list member */
 834         *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
 835         last_comand_pointer = &((*last_cmd)->next);
 836         (*last_cmd)->next = NULL;
 837         (*last_cmd)->type = JTAG_STATEMOVE;
 838
 839         (*last_cmd)->cmd.statemove = cmd_queue_alloc(sizeof(statemove_command_t));
 840         (*last_cmd)->cmd.statemove->end_state = state;
 841
 842
 843         return ERROR_OK;
 844 }
 845
 846 int jtag_add_pathmove(int num_states, enum tap_state *path)
 847 {
 848         if (jtag_trst == 1)
 849         {
 850                 WARNING("JTAG command queued, while TRST is low (TAP in reset)");
 851                 return jtag_error=ERROR_JTAG_TRST_ASSERTED;
 852         }
 853
 854         /* the last state has to be a stable state */
 855         if (tap_move_map[path[num_states - 1]] == -1)
 856         {
 857                 ERROR("TAP path doesn't finish in a stable state");
 858                 return jtag_error=ERROR_JTAG_NOT_IMPLEMENTED;
 859         }
 860
 861         if (cmd_queue_cur_state == TAP_TLR && cmd_queue_end_state != TAP_TLR)
 862                 jtag_call_event_callbacks(JTAG_TRST_RELEASED);
 863
 864         if (cmd_queue_end_state == TAP_TLR)
 865                 jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
 866
 867
 868         enum tap_state cur_state=cmd_queue_cur_state;
 869         int i;
 870         for (i=0; i<num_states; i++)
 871         {
 872                 if ((tap_transitions[cur_state].low != path[i])&&
 873                                 (tap_transitions[cur_state].high != path[i]))
 874                 {
 875                         ERROR("BUG: %s -> %s isn't a valid TAP transition", tap_state_strings[cur_state], tap_state_strings[path[i]]);
 876                         exit(-1);
 877                 }
 878                 cur_state = path[i];
 879         }
 880
 881         cmd_queue_cur_state = path[num_states - 1];
 882
 883         return interface_jtag_add_pathmove(num_states, path);
 884 }
 885
 886
 887 int MINIDRIVER(interface_jtag_add_pathmove)(int num_states, enum tap_state *path)
 888 {
 889         jtag_command_t **last_cmd = jtag_get_last_command_p();
 890         int i;
 891
 892         /* allocate memory for a new list member */
 893         *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
 894         last_comand_pointer = &((*last_cmd)->next);
 895         (*last_cmd)->next = NULL;
 896         (*last_cmd)->type = JTAG_PATHMOVE;
 897
 898         (*last_cmd)->cmd.pathmove = cmd_queue_alloc(sizeof(pathmove_command_t));
 899         (*last_cmd)->cmd.pathmove->num_states = num_states;
 900         (*last_cmd)->cmd.pathmove->path = cmd_queue_alloc(sizeof(enum tap_state) * num_states);
 901
 902         for (i = 0; i < num_states; i++)
 903                 (*last_cmd)->cmd.pathmove->path[i] = path[i];
 904
 905         return ERROR_OK;
 906 }
 907
 908 int MINIDRIVER(interface_jtag_add_runtest)(int num_cycles, enum tap_state state)
 909 {
 910         jtag_command_t **last_cmd = jtag_get_last_command_p();
 911
 912         /* allocate memory for a new list member */
 913         *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
 914         (*last_cmd)->next = NULL;
 915         last_comand_pointer = &((*last_cmd)->next);
 916         (*last_cmd)->type = JTAG_RUNTEST;
 917
 918         (*last_cmd)->cmd.runtest = cmd_queue_alloc(sizeof(runtest_command_t));
 919         (*last_cmd)->cmd.runtest->num_cycles = num_cycles;
 920         (*last_cmd)->cmd.runtest->end_state = state;
 921
 922         return ERROR_OK;
 923 }
 924
 925 int jtag_add_runtest(int num_cycles, enum tap_state state)
 926 {
 927         if (jtag_trst == 1)
 928         {
 929                 jtag_error=ERROR_JTAG_QUEUE_FAILED;
 930                 WARNING("JTAG command queued, while TRST is low (TAP in reset)");
 931                 return ERROR_JTAG_TRST_ASSERTED;
 932         }
 933
 934         if (state != -1)
 935                 cmd_queue_end_state = state;
 936
 937         if (cmd_queue_cur_state == TAP_TLR && cmd_queue_end_state != TAP_TLR)
 938                 jtag_call_event_callbacks(JTAG_TRST_RELEASED);
 939
 940         if (cmd_queue_end_state == TAP_TLR)
 941                 jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
 942
 943         cmd_queue_cur_state = cmd_queue_end_state;
 944
 945         /* executed by sw or hw fifo */
 946         return interface_jtag_add_runtest(num_cycles, cmd_queue_end_state);
 947 }
 948
 949 int jtag_add_reset(int req_trst, int req_srst)
 950 {
 951         int trst_with_tms = 0;
 952         int retval;
 953
 954         if (req_trst == -1)
 955                 req_trst = jtag_trst;
 956
 957         if (req_srst == -1)
 958                 req_srst = jtag_srst;
 959
 960         /* Make sure that jtag_reset_config allows the requested reset */
 961         /* if SRST pulls TRST, we can't fulfill srst == 1 with trst == 0 */
 962         if (((jtag_reset_config & RESET_SRST_PULLS_TRST) && (req_srst == 1)) && (req_trst == 0))
 963         {
 964                 return jtag_error=ERROR_JTAG_RESET_WOULD_ASSERT_TRST;
 965         }
 966
 967         /* if TRST pulls SRST, we reset with TAP T-L-R */
 968         if (((jtag_reset_config & RESET_TRST_PULLS_SRST) && (req_trst == 1)) && (req_srst == 0))
 969         {
 970                 req_trst = 0;
 971                 trst_with_tms = 1;
 972         }
 973
 974         if (req_srst && !(jtag_reset_config & RESET_HAS_SRST))
 975         {
 976                 ERROR("requested nSRST assertion, but the current configuration doesn't support this");
 977                 return jtag_error=ERROR_JTAG_RESET_CANT_SRST;
 978         }
 979
 980         if (req_trst && !(jtag_reset_config & RESET_HAS_TRST))
 981         {
 982                 req_trst = 0;
 983                 trst_with_tms = 1;
 984         }
 985
 986         jtag_trst = req_trst;
 987         jtag_srst = req_srst;
 988
 989         retval = interface_jtag_add_reset(req_trst, req_srst);
 990         if (retval!=ERROR_OK)
 991         {
 992                 jtag_error=retval;
 993                 return retval;
 994         }
 995
 996         if (jtag_srst)
 997         {
 998                 jtag_call_event_callbacks(JTAG_SRST_ASSERTED);
 999         }
1000         else
1001         {
1002                 jtag_call_event_callbacks(JTAG_SRST_RELEASED);
1003                 if (jtag_nsrst_delay)
1004                         jtag_add_sleep(jtag_nsrst_delay * 1000);
1005         }
1006
1007         if (trst_with_tms)
1008         {
1009                 jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
1010                 jtag_add_end_state(TAP_TLR);
1011                 jtag_add_statemove(TAP_TLR);
1012
1013                 return ERROR_OK;
1014         }
1015
1016         if (jtag_trst)
1017         {
1018                 /* we just asserted nTRST, so we're now in Test-Logic-Reset,
1019                  * and inform possible listeners about this
1020                  */
1021                 cmd_queue_cur_state = TAP_TLR;
1022                 jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
1023         }
1024         else
1025         {
1026                 /* the nTRST line got deasserted, so we're still in Test-Logic-Reset,
1027                  * but we might want to add a delay to give the TAP time to settle
1028                  */
1029                 if (jtag_ntrst_delay)
1030                         jtag_add_sleep(jtag_ntrst_delay * 1000);
1031         }
1032
1033         return retval;
1034
1035 }
1036
1037 int MINIDRIVER(interface_jtag_add_reset)(int req_trst, int req_srst)
1038 {
1039         jtag_command_t **last_cmd = jtag_get_last_command_p();
1040
1041         /* allocate memory for a new list member */
1042         *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
1043         (*last_cmd)->next = NULL;
1044         last_comand_pointer = &((*last_cmd)->next);
1045         (*last_cmd)->type = JTAG_RESET;
1046
1047         (*last_cmd)->cmd.reset = cmd_queue_alloc(sizeof(reset_command_t));
1048         (*last_cmd)->cmd.reset->trst = req_trst;
1049         (*last_cmd)->cmd.reset->srst = req_srst;
1050
1051
1052         return ERROR_OK;
1053 }
1054
1055 int MINIDRIVER(interface_jtag_add_end_state)(enum tap_state state)
1056 {
1057         jtag_command_t **last_cmd = jtag_get_last_command_p();
1058
1059         /* allocate memory for a new list member */
1060         *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
1061         (*last_cmd)->next = NULL;
1062         last_comand_pointer = &((*last_cmd)->next);
1063         (*last_cmd)->type = JTAG_END_STATE;
1064
1065         (*last_cmd)->cmd.end_state = cmd_queue_alloc(sizeof(end_state_command_t));
1066         (*last_cmd)->cmd.end_state->end_state = state;
1067
1068         return ERROR_OK;
1069 }
1070
1071 int jtag_add_end_state(enum tap_state state)
1072 {
1073         if (state != -1)
1074                 cmd_queue_end_state = state;
1075         int retval = interface_jtag_add_end_state(cmd_queue_end_state);
1076         return retval;
1077 }
1078
1079 int MINIDRIVER(interface_jtag_add_sleep)(u32 us)
1080 {
1081         jtag_command_t **last_cmd = jtag_get_last_command_p();
1082
1083         /* allocate memory for a new list member */
1084         *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
1085         (*last_cmd)->next = NULL;
1086         last_comand_pointer = &((*last_cmd)->next);
1087         (*last_cmd)->type = JTAG_SLEEP;
1088
1089         (*last_cmd)->cmd.sleep = cmd_queue_alloc(sizeof(sleep_command_t));
1090         (*last_cmd)->cmd.sleep->us = us;
1091
1092         return ERROR_OK;
1093 }
1094
1095 int jtag_add_sleep(u32 us)
1096 {
1097         return interface_jtag_add_sleep(us);
1098 }
1099
1100 int jtag_scan_size(scan_command_t *cmd)
1101 {
1102         int bit_count = 0;
1103         int i;
1104
1105         /* count bits in scan command */
1106         for (i = 0; i < cmd->num_fields; i++)
1107         {
1108                 bit_count += cmd->fields[i].num_bits;
1109         }
1110
1111         return bit_count;
1112 }
1113
1114 int jtag_build_buffer(scan_command_t *cmd, u8 **buffer)
1115 {
1116         int bit_count = 0;
1117         int i;
1118
1119         bit_count = jtag_scan_size(cmd);
1120         *buffer = malloc(CEIL(bit_count, 8));
1121
1122         bit_count = 0;
1123
1124         for (i = 0; i < cmd->num_fields; i++)
1125         {
1126                 if (cmd->fields[i].out_value)
1127                 {
1128 #ifdef _DEBUG_JTAG_IO_
1129                         char* char_buf = buf_to_str(cmd->fields[i].out_value, (cmd->fields[i].num_bits > 64) ? 64 : cmd->fields[i].num_bits, 16);
1130 #endif
1131                         buf_set_buf(cmd->fields[i].out_value, 0, *buffer, bit_count, cmd->fields[i].num_bits);
1132 #ifdef _DEBUG_JTAG_IO_
1133                         DEBUG("fields[%i].out_value: 0x%s", i, char_buf);
1134                         free(char_buf);
1135 #endif
1136                 }
1137
1138                 bit_count += cmd->fields[i].num_bits;
1139         }
1140
1141         return bit_count;
1142
1143 }
1144
1145 int jtag_read_buffer(u8 *buffer, scan_command_t *cmd)
1146 {
1147         int i;
1148         int bit_count = 0;
1149         int retval;
1150
1151         /* we return ERROR_OK, unless a check fails, or a handler reports a problem */
1152         retval = ERROR_OK;
1153
1154         for (i = 0; i < cmd->num_fields; i++)
1155         {
1156                 /* if neither in_value nor in_handler
1157                  * are specified we don't have to examine this field
1158                  */
1159                 if (cmd->fields[i].in_value || cmd->fields[i].in_handler)
1160                 {
1161                         int num_bits = cmd->fields[i].num_bits;
1162                         u8 *captured = buf_set_buf(buffer, bit_count, malloc(CEIL(num_bits, 8)), 0, num_bits);
1163
1164 #ifdef _DEBUG_JTAG_IO_
1165                         char *char_buf;
1166
1167                         char_buf = buf_to_str(captured, (num_bits > 64) ? 64 : num_bits, 16);
1168                         DEBUG("fields[%i].in_value: 0x%s", i, char_buf);
1169                         free(char_buf);
1170 #endif
1171
1172                         if (cmd->fields[i].in_value)
1173                         {
1174                                 buf_cpy(captured, cmd->fields[i].in_value, num_bits);
1175
1176                                 if (cmd->fields[i].in_handler)
1177                                 {
1178                                         if (cmd->fields[i].in_handler(cmd->fields[i].in_value, cmd->fields[i].in_handler_priv, cmd->fields+i) != ERROR_OK)
1179                                         {
1180                                                 WARNING("in_handler reported a failed check");
1181                                                 retval = ERROR_JTAG_QUEUE_FAILED;
1182                                         }
1183                                 }
1184                         }
1185
1186                         /* no in_value specified, but a handler takes care of the scanned data */
1187                         if (cmd->fields[i].in_handler && (!cmd->fields[i].in_value))
1188                         {
1189                                 if (cmd->fields[i].in_handler(captured, cmd->fields[i].in_handler_priv, cmd->fields+i) != ERROR_OK)
1190                                 {
1191                                         /* We're going to call the error:handler later, but if the in_handler
1192                                          * reported an error we report this failure upstream
1193                                          */
1194                                         WARNING("in_handler reported a failed check");
1195                                         retval = ERROR_JTAG_QUEUE_FAILED;
1196                                 }
1197                         }
1198
1199                         free(captured);
1200                 }
1201                 bit_count += cmd->fields[i].num_bits;
1202         }
1203
1204         return retval;
1205 }
1206
1207 int jtag_check_value(u8 *captured, void *priv, scan_field_t *field)
1208 {
1209         int retval = ERROR_OK;
1210         int num_bits = field->num_bits;
1211
1212         int compare_failed = 0;
1213
1214         if (field->in_check_mask)
1215                 compare_failed = buf_cmp_mask(captured, field->in_check_value, field->in_check_mask, num_bits);
1216         else
1217                 compare_failed = buf_cmp(captured, field->in_check_value, num_bits);
1218
1219         if (compare_failed)
1220                 {
1221                 /* An error handler could have caught the failing check
1222                  * only report a problem when there wasn't a handler, or if the handler
1223                  * acknowledged the error
1224                  */
1225                 if (compare_failed)
1226                 {
1227                         char *captured_char = buf_to_str(captured, (num_bits > 64) ? 64 : num_bits, 16);
1228                         char *in_check_value_char = buf_to_str(field->in_check_value, (num_bits > 64) ? 64 : num_bits, 16);
1229
1230                         if (field->in_check_mask)
1231                         {
1232                                 char *in_check_mask_char;
1233                                 in_check_mask_char = buf_to_str(field->in_check_mask, (num_bits > 64) ? 64 : num_bits, 16);
1234                                 WARNING("value captured during scan didn't pass the requested check: captured: 0x%s check_value: 0x%s check_mask: 0x%s", captured_char, in_check_value_char, in_check_mask_char);
1235                                 free(in_check_mask_char);
1236                         }
1237                         else
1238                         {
1239                                 WARNING("value captured during scan didn't pass the requested check: captured: 0x%s check_value: 0x%s", captured_char, in_check_value_char);
1240                         }
1241
1242                         free(captured_char);
1243                         free(in_check_value_char);
1244
1245                         retval = ERROR_JTAG_QUEUE_FAILED;
1246                 }
1247
1248         }
1249         return retval;
1250 }
1251
1252 /*
1253   set up checking of this field using the in_handler. The values passed in must be valid until
1254   after jtag_execute() has completed.
1255  */
1256 void jtag_set_check_value(scan_field_t *field, u8 *value, u8 *mask, error_handler_t *in_error_handler)
1257 {
1258         if (value)
1259                 field->in_handler = jtag_check_value;
1260         else
1261                 field->in_handler = NULL;       /* No check, e.g. embeddedice uses value==NULL to indicate no check */
1262         field->in_handler_priv = NULL;  /* this will be filled in at the invocation site to point to the field duplicate */
1263         field->in_check_value = value;
1264         field->in_check_mask = mask;
1265 }
1266
1267 enum scan_type jtag_scan_type(scan_command_t *cmd)
1268 {
1269         int i;
1270         int type = 0;
1271
1272         for (i = 0; i < cmd->num_fields; i++)
1273         {
1274                 if (cmd->fields[i].in_value || cmd->fields[i].in_handler)
1275                         type |= SCAN_IN;
1276                 if (cmd->fields[i].out_value)
1277                         type |= SCAN_OUT;
1278         }
1279
1280         return type;
1281 }
1282
1283 int MINIDRIVER(interface_jtag_execute_queue)(void)
1284 {
1285         int retval;
1286
1287         retval = jtag->execute_queue();
1288
1289         cmd_queue_free();
1290
1291         jtag_command_queue = NULL;
1292         last_comand_pointer = &jtag_command_queue;
1293
1294         return retval;
1295 }
1296
1297 int jtag_execute_queue(void)
1298 {
1299         int retval=interface_jtag_execute_queue();
1300         if (retval==ERROR_OK)
1301         {
1302         retval=jtag_error;
1303         }
1304         jtag_error=ERROR_OK;
1305         return retval;
1306 }
1307
1308 int jtag_reset_callback(enum jtag_event event, void *priv)
1309 {
1310         jtag_device_t *device = priv;
1311
1312         DEBUG("-");
1313
1314         if (event == JTAG_TRST_ASSERTED)
1315         {
1316                 buf_set_ones(device->cur_instr, device->ir_length);
1317                 device->bypass = 1;
1318         }
1319
1320         return ERROR_OK;
1321 }
1322
1323 void jtag_sleep(u32 us)
1324 {
1325         usleep(us);
1326 }
1327
1328 /* Try to examine chain layout according to IEEE 1149.1 §12
1329  */
1330 int jtag_examine_chain()
1331 {
1332         jtag_device_t *device = jtag_devices;
1333         scan_field_t field;
1334         u8 idcode_buffer[JTAG_MAX_CHAIN_SIZE * 4];
1335         int i;
1336         int bit_count;
1337         int device_count = 0;
1338         u8 zero_check = 0x0;
1339         u8 one_check = 0xff;
1340
1341         field.device = 0;
1342         field.num_bits = sizeof(idcode_buffer) * 8;
1343         field.out_value = idcode_buffer;
1344         field.out_mask = NULL;
1345         field.in_value = idcode_buffer;
1346         field.in_check_value = NULL;
1347         field.in_check_mask = NULL;
1348         field.in_handler = NULL;
1349         field.in_handler_priv = NULL;
1350
1351         for (i = 0; i < JTAG_MAX_CHAIN_SIZE; i++)
1352         {
1353                 buf_set_u32(idcode_buffer, i * 32, 32, 0x000000FF);
1354         }
1355
1356         jtag_add_plain_dr_scan(1, &field, TAP_TLR);
1357         jtag_execute_queue();
1358
1359         for (i = 0; i < JTAG_MAX_CHAIN_SIZE * 4; i++)
1360         {
1361                 zero_check |= idcode_buffer[i];
1362                 one_check &= idcode_buffer[i];
1363         }
1364
1365         /* if there wasn't a single non-zero bit or if all bits were one, the scan isn't valid */
1366         if ((zero_check == 0x00) || (one_check == 0xff))
1367         {
1368                 ERROR("JTAG communication failure, check connection, JTAG interface, target power etc.");
1369                 return ERROR_JTAG_INIT_FAILED;
1370         }
1371
1372         for (bit_count = 0; bit_count < (JTAG_MAX_CHAIN_SIZE * 32) - 31;)
1373         {
1374                 u32 idcode = buf_get_u32(idcode_buffer, bit_count, 32);
1375                 if ((idcode & 1) == 0)
1376                 {
1377                         /* LSB must not be 0, this indicates a device in bypass */
1378                         device_count++;
1379
1380                         bit_count += 1;
1381                 }
1382                 else
1383                 {
1384                         u32 manufacturer;
1385                         u32 part;
1386                         u32 version;
1387
1388                         if (idcode == 0x000000FF)
1389                         {
1390                                 /* End of chain (invalid manufacturer ID) */
1391                                 break;
1392                         }
1393
1394                         if (device)
1395                         {
1396                                 device->idcode = idcode;
1397                                 device = device->next;
1398                         }
1399                         device_count++;
1400
1401                         manufacturer = (idcode & 0xffe) >> 1;
1402                         part = (idcode & 0xffff000) >> 12;
1403                         version = (idcode & 0xf0000000) >> 28;
1404
1405                         INFO("JTAG device found: 0x%8.8x (Manufacturer: 0x%3.3x, Part: 0x%4.4x, Version: 0x%1.1x)",
1406                                 idcode, manufacturer, part, version);
1407
1408                         bit_count += 32;
1409                 }
1410         }
1411
1412         /* see if number of discovered devices matches configuration */
1413         if (device_count != jtag_num_devices)
1414         {
1415                 ERROR("number of discovered devices in JTAG chain (%i) doesn't match configuration (%i)",
1416                         device_count, jtag_num_devices);
1417                 ERROR("check the config file and ensure proper JTAG communication (connections, speed, ...)");
1418                 return ERROR_JTAG_INIT_FAILED;
1419         }
1420
1421         return ERROR_OK;
1422 }
1423
1424 int jtag_validate_chain()
1425 {
1426         jtag_device_t *device = jtag_devices;
1427         int total_ir_length = 0;
1428         u8 *ir_test = NULL;
1429         scan_field_t field;
1430         int chain_pos = 0;
1431
1432         while (device)
1433         {
1434                 total_ir_length += device->ir_length;
1435                 device = device->next;
1436         }
1437
1438         total_ir_length += 2;
1439         ir_test = malloc(CEIL(total_ir_length, 8));
1440         buf_set_ones(ir_test, total_ir_length);
1441
1442         field.device = 0;
1443         field.num_bits = total_ir_length;
1444         field.out_value = ir_test;
1445         field.out_mask = NULL;
1446         field.in_value = ir_test;
1447         field.in_check_value = NULL;
1448         field.in_check_mask = NULL;
1449         field.in_handler = NULL;
1450         field.in_handler_priv = NULL;
1451
1452         jtag_add_plain_ir_scan(1, &field, TAP_TLR);
1453         jtag_execute_queue();
1454
1455         device = jtag_devices;
1456         while (device)
1457         {
1458                 if (buf_get_u32(ir_test, chain_pos, 2) != 0x1)
1459                 {
1460                         char *cbuf = buf_to_str(ir_test, total_ir_length, 16);
1461                         ERROR("Error validating JTAG scan chain, IR mismatch, scan returned 0x%s", cbuf);
1462                         free(cbuf);
1463                         free(ir_test);
1464                         return ERROR_JTAG_INIT_FAILED;
1465                 }
1466                 chain_pos += device->ir_length;
1467                 device = device->next;
1468         }
1469
1470         if (buf_get_u32(ir_test, chain_pos, 2) != 0x3)
1471         {
1472                 char *cbuf = buf_to_str(ir_test, total_ir_length, 16);
1473                 ERROR("Error validating JTAG scan chain, IR mismatch, scan returned 0x%s", cbuf);
1474                 free(cbuf);
1475                 free(ir_test);
1476                 return ERROR_JTAG_INIT_FAILED;
1477         }
1478
1479         free(ir_test);
1480
1481         return ERROR_OK;
1482 }
1483
1484 int jtag_register_commands(struct command_context_s *cmd_ctx)
1485 {
1486         register_command(cmd_ctx, NULL, "interface", handle_interface_command,
1487                 COMMAND_CONFIG, NULL);
1488         register_command(cmd_ctx, NULL, "jtag_speed", handle_jtag_speed_command,
1489                 COMMAND_ANY, "set jtag speed (if supported) <speed>");
1490         register_command(cmd_ctx, NULL, "jtag_device", handle_jtag_device_command,
1491                 COMMAND_CONFIG, "jtag_device <ir_length> <ir_expected> <ir_mask>");
1492         register_command(cmd_ctx, NULL, "reset_config", handle_reset_config_command,
1493                 COMMAND_CONFIG, NULL);
1494         register_command(cmd_ctx, NULL, "jtag_nsrst_delay", handle_jtag_nsrst_delay_command,
1495                 COMMAND_CONFIG, NULL);
1496         register_command(cmd_ctx, NULL, "jtag_ntrst_delay", handle_jtag_ntrst_delay_command,
1497                 COMMAND_CONFIG, NULL);
1498
1499         register_command(cmd_ctx, NULL, "scan_chain", handle_scan_chain_command,
1500                 COMMAND_EXEC, "print current scan chain configuration");
1501
1502         register_command(cmd_ctx, NULL, "endstate", handle_endstate_command,
1503                 COMMAND_EXEC, "finish JTAG operations in <tap_state>");
1504         register_command(cmd_ctx, NULL, "jtag_reset", handle_jtag_reset_command,
1505                 COMMAND_EXEC, "toggle reset lines <trst> <srst>");
1506         register_command(cmd_ctx, NULL, "runtest", handle_runtest_command,
1507                 COMMAND_EXEC, "move to Run-Test/Idle, and execute <num_cycles>");
1508         register_command(cmd_ctx, NULL, "statemove", handle_statemove_command,
1509                 COMMAND_EXEC, "move to current endstate or [tap_state]");
1510         register_command(cmd_ctx, NULL, "irscan", handle_irscan_command,
1511                 COMMAND_EXEC, "execute IR scan <device> <instr> [dev2] [instr2] ...");
1512         register_command(cmd_ctx, NULL, "drscan", handle_drscan_command,
1513                 COMMAND_EXEC, "execute DR scan <device> <var> [dev2] [var2] ...");
1514
1515         register_command(cmd_ctx, NULL, "verify_ircapture", handle_verify_ircapture_command,
1516                 COMMAND_ANY, "verify value captured during Capture-IR <enable|disable>");
1517         return ERROR_OK;
1518 }
1519
1520 int jtag_interface_init(struct command_context_s *cmd_ctx)
1521 {
1522         if (!jtag_interface)
1523         {
1524                 /* nothing was previously specified by "interface" command */
1525                 ERROR("JTAG interface has to be specified, see \"interface\" command");
1526                 return ERROR_JTAG_INVALID_INTERFACE;
1527         }
1528
1529         if (jtag_interface->init() != ERROR_OK)
1530                 return ERROR_JTAG_INIT_FAILED;
1531
1532         jtag = jtag_interface;
1533         return ERROR_OK;
1534 }
1535
1536 int jtag_init(struct command_context_s *cmd_ctx)
1537 {
1538         int validate_tries = 0;
1539         jtag_device_t *device;
1540
1541         DEBUG("-");
1542
1543         if (!jtag && jtag_interface_init(cmd_ctx) != ERROR_OK)
1544                 return ERROR_JTAG_INIT_FAILED;
1545
1546         device = jtag_devices;
1547         jtag_ir_scan_size = 0;
1548         jtag_num_devices = 0;
1549         while (device != NULL)
1550         {
1551                 jtag_ir_scan_size += device->ir_length;
1552                 jtag_num_devices++;
1553                 device = device->next;
1554         }
1555
1556         jtag_add_statemove(TAP_TLR);
1557         jtag_execute_queue();
1558
1559         /* examine chain first, as this could discover the real chain layout */
1560         if (jtag_examine_chain() != ERROR_OK)
1561         {
1562                 ERROR("trying to validate configured JTAG chain anyway...");
1563         }
1564
1565         while (jtag_validate_chain() != ERROR_OK)
1566         {
1567                 validate_tries++;
1568                 if (validate_tries > 5)
1569                 {
1570                         ERROR("Could not validate JTAG chain, exit");
1571                         return ERROR_JTAG_INVALID_INTERFACE;
1572                 }
1573                 usleep(10000);
1574         }
1575
1576         return ERROR_OK;
1577 }
1578
1579 int handle_interface_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1580 {
1581         int i;
1582
1583         /* check whether the interface is already configured */
1584         if (jtag_interface)
1585         {
1586                 WARNING("Interface already configured, ignoring");
1587                 return ERROR_OK;
1588         }
1589
1590         /* interface name is a mandatory argument */
1591         if (argc < 1 || args[0][0] == '\0')
1592         {
1593                 return ERROR_COMMAND_SYNTAX_ERROR;
1594         }
1595
1596         for (i=0; jtag_interfaces[i]; i++)
1597         {
1598                 if (strcmp(args[0], jtag_interfaces[i]->name) == 0)
1599                 {
1600                         if (jtag_interfaces[i]->register_commands(cmd_ctx) != ERROR_OK)
1601                                 exit(-1);
1602
1603                         jtag_interface = jtag_interfaces[i];
1604                         return ERROR_OK;
1605                 }
1606         }
1607
1608         /* no valid interface was found (i.e. the configuration option,
1609          * didn't match one of the compiled-in interfaces
1610          */
1611         ERROR("No valid jtag interface found (%s)", args[0]);
1612         ERROR("compiled-in jtag interfaces:");
1613         for (i = 0; jtag_interfaces[i]; i++)
1614         {
1615                 ERROR("%i: %s", i, jtag_interfaces[i]->name);
1616         }
1617
1618         return ERROR_JTAG_INVALID_INTERFACE;
1619 }
1620
1621 int handle_jtag_device_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1622 {
1623         jtag_device_t **last_device_p = &jtag_devices;
1624
1625         if (*last_device_p)
1626         {
1627                 while ((*last_device_p)->next)
1628                         last_device_p = &((*last_device_p)->next);
1629                 last_device_p = &((*last_device_p)->next);
1630         }
1631
1632         if (argc < 3)
1633                 return ERROR_OK;
1634
1635         *last_device_p = malloc(sizeof(jtag_device_t));
1636         (*last_device_p)->ir_length = strtoul(args[0], NULL, 0);
1637
1638         (*last_device_p)->expected = malloc((*last_device_p)->ir_length);
1639         buf_set_u32((*last_device_p)->expected, 0, (*last_device_p)->ir_length, strtoul(args[1], NULL, 0));
1640         (*last_device_p)->expected_mask = malloc((*last_device_p)->ir_length);
1641         buf_set_u32((*last_device_p)->expected_mask, 0, (*last_device_p)->ir_length, strtoul(args[2], NULL, 0));
1642
1643         (*last_device_p)->cur_instr = malloc((*last_device_p)->ir_length);
1644         (*last_device_p)->bypass = 1;
1645         buf_set_ones((*last_device_p)->cur_instr, (*last_device_p)->ir_length);
1646
1647         (*last_device_p)->next = NULL;
1648
1649         jtag_register_event_callback(jtag_reset_callback, (*last_device_p));
1650
1651         jtag_num_devices++;
1652
1653         return ERROR_OK;
1654 }
1655
1656 int handle_scan_chain_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1657 {
1658         jtag_device_t *device = jtag_devices;
1659         int device_count = 0;
1660
1661         while (device)
1662         {
1663                 u32 expected, expected_mask, cur_instr;
1664                 expected = buf_get_u32(device->expected, 0, device->ir_length);
1665                 expected_mask = buf_get_u32(device->expected_mask, 0, device->ir_length);
1666                 cur_instr = buf_get_u32(device->cur_instr, 0, device->ir_length);
1667                 command_print(cmd_ctx, "%i: idcode: 0x%8.8x ir length %i, ir capture 0x%x, ir mask 0x%x, current instruction 0x%x", device_count, device->idcode, device->ir_length, expected, expected_mask, cur_instr);
1668                 device = device->next;
1669                 device_count++;
1670         }
1671
1672         return ERROR_OK;
1673 }
1674
1675 int handle_reset_config_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1676 {
1677         if (argc >= 1)
1678         {
1679                 if (strcmp(args[0], "none") == 0)
1680                         jtag_reset_config = RESET_NONE;
1681                 else if (strcmp(args[0], "trst_only") == 0)
1682                         jtag_reset_config = RESET_HAS_TRST;
1683                 else if (strcmp(args[0], "srst_only") == 0)
1684                         jtag_reset_config = RESET_HAS_SRST;
1685                 else if (strcmp(args[0], "trst_and_srst") == 0)
1686                         jtag_reset_config = RESET_TRST_AND_SRST;
1687                 else
1688                 {
1689                         ERROR("invalid reset_config argument, defaulting to none");
1690                         jtag_reset_config = RESET_NONE;
1691                         return ERROR_INVALID_ARGUMENTS;
1692                 }
1693         }
1694
1695         if (argc >= 2)
1696         {
1697                 if (strcmp(args[1], "srst_pulls_trst") == 0)
1698                         jtag_reset_config |= RESET_SRST_PULLS_TRST;
1699                 else if (strcmp(args[1], "trst_pulls_srst") == 0)
1700                         jtag_reset_config |= RESET_TRST_PULLS_SRST;
1701                 else if (strcmp(args[1], "combined") == 0)
1702                         jtag_reset_config |= RESET_SRST_PULLS_TRST | RESET_TRST_PULLS_SRST;
1703                 else if (strcmp(args[1], "separate") == 0)
1704                         jtag_reset_config &= ~(RESET_SRST_PULLS_TRST | RESET_TRST_PULLS_SRST);
1705                 else
1706                 {
1707                         ERROR("invalid reset_config argument, defaulting to none");
1708                         jtag_reset_config = RESET_NONE;
1709                         return ERROR_INVALID_ARGUMENTS;
1710                 }
1711         }
1712
1713         if (argc >= 3)
1714         {
1715                 if (strcmp(args[2], "trst_open_drain") == 0)
1716                         jtag_reset_config |= RESET_TRST_OPEN_DRAIN;
1717                 else if (strcmp(args[2], "trst_push_pull") == 0)
1718                         jtag_reset_config &= ~RESET_TRST_OPEN_DRAIN;
1719                 else
1720                 {
1721                         ERROR("invalid reset_config argument, defaulting to none");
1722                         jtag_reset_config = RESET_NONE;
1723                         return ERROR_INVALID_ARGUMENTS;
1724                 }
1725         }
1726
1727         if (argc >= 4)
1728         {
1729                 if (strcmp(args[3], "srst_push_pull") == 0)
1730                         jtag_reset_config |= RESET_SRST_PUSH_PULL;
1731                 else if (strcmp(args[3], "srst_open_drain") == 0)
1732                         jtag_reset_config &= ~RESET_SRST_PUSH_PULL;
1733                 else
1734                 {
1735                         ERROR("invalid reset_config argument, defaulting to none");
1736                         jtag_reset_config = RESET_NONE;
1737                         return ERROR_INVALID_ARGUMENTS;
1738                 }
1739         }
1740
1741         return ERROR_OK;
1742 }
1743
1744 int handle_jtag_nsrst_delay_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1745 {
1746         if (argc < 1)
1747         {
1748                 ERROR("jtag_nsrst_delay <ms> command takes one required argument");
1749                 exit(-1);
1750         }
1751         else
1752         {
1753                 jtag_nsrst_delay = strtoul(args[0], NULL, 0);
1754         }
1755
1756         return ERROR_OK;
1757 }
1758
1759 int handle_jtag_ntrst_delay_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1760 {
1761         if (argc < 1)
1762         {
1763                 ERROR("jtag_ntrst_delay <ms> command takes one required argument");
1764                 exit(-1);
1765         }
1766         else
1767         {
1768                 jtag_ntrst_delay = strtoul(args[0], NULL, 0);
1769         }
1770
1771         return ERROR_OK;
1772 }
1773
1774 int handle_jtag_speed_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1775 {
1776         if (argc == 0)
1777                 command_print(cmd_ctx, "jtag_speed: %i", jtag_speed);
1778
1779         if (argc > 0)
1780         {
1781                 /* this command can be called during CONFIG,
1782                  * in which case jtag isn't initialized */
1783                 if (jtag)
1784                         jtag->speed(strtoul(args[0], NULL, 0));
1785                 else
1786                         jtag_speed = strtoul(args[0], NULL, 0);
1787         }
1788
1789         return ERROR_OK;
1790 }
1791
1792 int handle_endstate_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1793 {
1794         enum tap_state state;
1795
1796         if (argc < 1)
1797         {
1798                 return ERROR_COMMAND_SYNTAX_ERROR;
1799         }
1800         else
1801         {
1802                 for (state = 0; state < 16; state++)
1803                 {
1804                         if (strcmp(args[0], tap_state_strings[state]) == 0)
1805                         {
1806                                 jtag_add_end_state(state);
1807                                 jtag_execute_queue();
1808                         }
1809                 }
1810         }
1811         command_print(cmd_ctx, "current endstate: %s", tap_state_strings[end_state]);
1812
1813         return ERROR_OK;
1814 }
1815
1816 int handle_jtag_reset_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1817 {
1818         int trst = -1;
1819         int srst = -1;
1820         int retval;
1821
1822         if (argc < 2)
1823         {
1824                 return ERROR_COMMAND_SYNTAX_ERROR;
1825
1826         }
1827
1828         if (args[0][0] == '1')
1829                 trst = 1;
1830         else if (args[0][0] == '0')
1831                 trst = 0;
1832         else
1833         {
1834                 return ERROR_COMMAND_SYNTAX_ERROR;
1835         }
1836
1837         if (args[1][0] == '1')
1838                 srst = 1;
1839         else if (args[1][0] == '0')
1840                 srst = 0;
1841         else
1842         {
1843                 return ERROR_COMMAND_SYNTAX_ERROR;
1844         }
1845
1846         if (!jtag && jtag_interface_init(cmd_ctx) != ERROR_OK)
1847                 return ERROR_JTAG_INIT_FAILED;
1848
1849         if ((retval = jtag_add_reset(trst, srst)) != ERROR_OK)
1850         {
1851                 switch (retval)
1852                 {
1853                         case ERROR_JTAG_RESET_WOULD_ASSERT_TRST:
1854                                 command_print(cmd_ctx, "requested reset would assert trst\nif this is acceptable, use jtag_reset 1 %c", args[1][0]);
1855                                 break;
1856                         case ERROR_JTAG_RESET_CANT_SRST:
1857                                 command_print(cmd_ctx, "can't assert srst because the current reset_config doesn't support it");
1858                                 break;
1859                         default:
1860                                 command_print(cmd_ctx, "unknown error");
1861                 }
1862         }
1863         jtag_execute_queue();
1864
1865         return ERROR_OK;
1866 }
1867
1868 int handle_runtest_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1869 {
1870         if (argc < 1)
1871         {
1872                 return ERROR_COMMAND_SYNTAX_ERROR;
1873         }
1874
1875         jtag_add_runtest(strtol(args[0], NULL, 0), -1);
1876         jtag_execute_queue();
1877
1878         return ERROR_OK;
1879
1880 }
1881
1882 int handle_statemove_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1883 {
1884         enum tap_state state;
1885
1886         state = -1;
1887         if (argc == 1)
1888         {
1889                 for (state = 0; state < 16; state++)
1890                 {
1891                         if (strcmp(args[0], tap_state_strings[state]) == 0)
1892                         {
1893                                 break;
1894                         }
1895                 }
1896         }
1897
1898         jtag_add_statemove(state);
1899         jtag_execute_queue();
1900
1901         return ERROR_OK;
1902
1903 }
1904
1905 int handle_irscan_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1906 {
1907         int i;
1908         scan_field_t *fields;
1909
1910         if ((argc < 2) || (argc % 2))
1911         {
1912                 return ERROR_COMMAND_SYNTAX_ERROR;
1913         }
1914
1915         fields = malloc(sizeof(scan_field_t) * argc / 2);
1916
1917         for (i = 0; i < argc / 2; i++)
1918         {
1919                 int device = strtoul(args[i*2], NULL, 0);
1920                 int field_size = jtag_get_device(device)->ir_length;
1921                 fields[i].device = device;
1922                 fields[i].out_value = malloc(CEIL(field_size, 8));
1923                 buf_set_u32(fields[i].out_value, 0, field_size, strtoul(args[i*2+1], NULL, 0));
1924                 fields[i].out_mask = NULL;
1925                 fields[i].in_value = NULL;
1926                 fields[i].in_check_mask = NULL;
1927                 fields[i].in_handler = NULL;
1928                 fields[i].in_handler_priv = NULL;
1929         }
1930
1931         jtag_add_ir_scan(argc / 2, fields, -1);
1932         jtag_execute_queue();
1933
1934         for (i = 0; i < argc / 2; i++)
1935                 free(fields[i].out_value);
1936
1937         free (fields);
1938
1939         return ERROR_OK;
1940 }
1941
1942 int handle_drscan_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1943 {
1944         scan_field_t *fields;
1945         int num_fields = 0;
1946         int field_count = 0;
1947         var_t *var;
1948         int i, j;
1949
1950         if ((argc < 2) || (argc % 2))
1951         {
1952                 return ERROR_COMMAND_SYNTAX_ERROR;
1953         }
1954
1955         for (i = 0; i < argc; i+=2)
1956         {
1957                 var = get_var_by_namenum(args[i+1]);
1958                 if (var)
1959                 {
1960                         num_fields += var->num_fields;
1961                 }
1962                 else
1963                 {
1964                         command_print(cmd_ctx, "variable %s doesn't exist", args[i+1]);
1965                         return ERROR_OK;
1966                 }
1967         }
1968
1969         fields = malloc(sizeof(scan_field_t) * num_fields);
1970
1971         for (i = 0; i < argc; i+=2)
1972         {
1973                 var = get_var_by_namenum(args[i+1]);
1974
1975                 for (j = 0; j < var->num_fields; j++)
1976                 {
1977                         fields[field_count].device = strtol(args[i], NULL, 0);
1978                         fields[field_count].num_bits = var->fields[j].num_bits;
1979                         fields[field_count].out_value = malloc(CEIL(var->fields[j].num_bits, 8));
1980                         buf_set_u32(fields[field_count].out_value, 0, var->fields[j].num_bits, var->fields[j].value);
1981                         fields[field_count].out_mask = NULL;
1982                         fields[field_count].in_value = fields[field_count].out_value;
1983                         fields[field_count].in_check_mask = NULL;
1984                         fields[field_count].in_check_value = NULL;
1985                         fields[field_count].in_handler = field_le_to_host;
1986                         fields[field_count++].in_handler_priv = &(var->fields[j]);
1987                 }
1988         }
1989
1990         jtag_add_dr_scan(num_fields, fields, -1);
1991         jtag_execute_queue();
1992
1993         for (i = 0; i < argc / 2; i++)
1994                 free(fields[i].out_value);
1995
1996         free(fields);
1997
1998         return ERROR_OK;
1999 }
2000
2001 int handle_verify_ircapture_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2002 {
2003         if (argc == 1)
2004         {
2005                 if (strcmp(args[0], "enable") == 0)
2006                 {
2007                         jtag_verify_capture_ir = 1;
2008                 }
2009                 else if (strcmp(args[0], "disable") == 0)
2010                 {
2011                         jtag_verify_capture_ir = 0;
2012                 } else
2013                 {
2014                         return ERROR_COMMAND_SYNTAX_ERROR;
2015                 }
2016         } else if (argc != 0)
2017         {
2018                 return ERROR_COMMAND_SYNTAX_ERROR;
2019         }
2020
2021         command_print(cmd_ctx, "verify Capture-IR is %s", (jtag_verify_capture_ir) ? "enabled": "disabled");
2022
2023         return ERROR_OK;
2024 }