src/target/esirisc_trace.c

   1 /***************************************************************************
   2  *   Copyright (C) 2018 by Square, Inc.                                    *
   3  *   Steven Stallion <stallion@squareup.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     *
  16  *   along with this program.  If not, see <http://www.gnu.org/licenses/>. *
  17  ***************************************************************************/
  18
  19 #ifdef HAVE_CONFIG_H
  20 #include "config.h"
  21 #endif
  22
  23 #include <helper/binarybuffer.h>
  24 #include <helper/command.h>
  25 #include <helper/fileio.h>
  26 #include <helper/log.h>
  27 #include <helper/types.h>
  28 #include <target/target.h>
  29
  30 #include "esirisc.h"
  31
  32 #define BIT_MASK(x)                     ((1 << (x)) - 1)
  33
  34 /* Control Fields */
  35 #define CONTROL_ST                      (1<<0)                                  /* Start */
  36 #define CONTROL_SP                      (1<<1)                                  /* Stop */
  37 #define CONTROL_W                       (1<<2)                                  /* Wrap */
  38 #define CONTROL_FC                      (1<<3)                                  /* Flow Control */
  39 #define CONTROL_FMT(x)          (((x) <<  4) & 0x30)    /* Format */
  40 #define CONTROL_PCB(x)          (((x) << 10) & 0x7c00)  /* PC Bits */
  41
  42 /* Status Fields */
  43 #define STATUS_T                        (1<<0)  /* Trace Started */
  44 #define STATUS_TD                       (1<<1)  /* Trace Disabled */
  45 #define STATUS_W                        (1<<2)  /* Wrapped */
  46 #define STATUS_O                        (1<<3)  /* Overflow */
  47
  48 /* Trigger Fields */
  49 #define TRIGGER_TST(x)          (((x) << 0) & 0xf)              /* Trigger Start */
  50 #define TRIGGER_DST                     (1<<7)                                  /* Delay Start */
  51 #define TRIGGER_TSP(x)          (((x) << 8) & 0xf00)    /* Trigger Stop */
  52 #define TRIGGER_DSP                     (1<<15)                                 /* Delay Start */
  53
  54 static const char * const esirisc_trace_delay_strings[] = {
  55         "none", "start", "stop", "both",
  56 };
  57
  58 static const char * const esirisc_trace_format_strings[] = {
  59         "full", "branch", "icache",
  60 };
  61
  62 static const char * const esirisc_trace_id_strings[] = {
  63         "sequential instruction",
  64         "pipeline stall",
  65         "direct branch",
  66         "extended ID",
  67 };
  68
  69 static const char * const esirisc_trace_ext_id_strings[] = {
  70         "",     /* unused */
  71         "exception",
  72         "eret",
  73         "stop instruction",
  74         "wait instruction",
  75         "multicycle instruction",
  76         "count",
  77         "initial",
  78         "indirect branch",
  79         "end of trace",
  80         "final",
  81 };
  82
  83 static const char * const esirisc_trace_trigger_strings[] = {
  84         "none", "pc", "load", "store", "exception", "eret", "wait", "stop",
  85         "high", "low",  /* start only */
  86 };
  87
  88 static int esirisc_trace_clear_status(struct target *target)
  89 {
  90         struct esirisc_common *esirisc = target_to_esirisc(target);
  91         struct esirisc_jtag *jtag_info = &esirisc->jtag_info;
  92         int retval;
  93
  94         if (target->state != TARGET_HALTED)
  95                 return ERROR_TARGET_NOT_HALTED;
  96
  97         retval = esirisc_jtag_write_csr(jtag_info, CSR_TRACE, CSR_TRACE_STATUS, ~0);
  98         if (retval != ERROR_OK) {
  99                 LOG_ERROR("%s: failed to write Trace CSR: Status", target_name(target));
 100                 return retval;
 101         }
 102
 103         return ERROR_OK;
 104 }
 105
 106 static int esirisc_trace_get_status(struct target *target, uint32_t *status)
 107 {
 108         struct esirisc_common *esirisc = target_to_esirisc(target);
 109         struct esirisc_jtag *jtag_info = &esirisc->jtag_info;
 110
 111         if (target->state != TARGET_HALTED)
 112                 return ERROR_TARGET_NOT_HALTED;
 113
 114         int retval = esirisc_jtag_read_csr(jtag_info, CSR_TRACE, CSR_TRACE_STATUS, status);
 115         if (retval != ERROR_OK) {
 116                 LOG_ERROR("%s: failed to read Trace CSR: Status", target_name(target));
 117                 return retval;
 118         }
 119
 120         return ERROR_OK;
 121 }
 122
 123 static int esirisc_trace_start(struct target *target)
 124 {
 125         struct esirisc_common *esirisc = target_to_esirisc(target);
 126         struct esirisc_jtag *jtag_info = &esirisc->jtag_info;
 127         uint32_t control;
 128         int retval;
 129
 130         if (target->state != TARGET_HALTED)
 131                 return ERROR_TARGET_NOT_HALTED;
 132
 133         retval = esirisc_jtag_read_csr(jtag_info, CSR_TRACE, CSR_TRACE_CONTROL, &control);
 134         if (retval != ERROR_OK) {
 135                 LOG_ERROR("%s: failed to read Trace CSR: Control", target_name(target));
 136                 return retval;
 137         }
 138
 139         control |= CONTROL_ST;
 140
 141         retval = esirisc_jtag_write_csr(jtag_info, CSR_TRACE, CSR_TRACE_CONTROL, control);
 142         if (retval != ERROR_OK) {
 143                 LOG_ERROR("%s: failed to write Trace CSR: Control", target_name(target));
 144                 return retval;
 145         }
 146
 147         return ERROR_OK;
 148 }
 149
 150 static int esirisc_trace_stop(struct target *target)
 151 {
 152         struct esirisc_common *esirisc = target_to_esirisc(target);
 153         struct esirisc_jtag *jtag_info = &esirisc->jtag_info;
 154         uint32_t control;
 155         int retval;
 156
 157         if (target->state != TARGET_HALTED)
 158                 return ERROR_TARGET_NOT_HALTED;
 159
 160         retval = esirisc_jtag_read_csr(jtag_info, CSR_TRACE, CSR_TRACE_CONTROL, &control);
 161         if (retval != ERROR_OK) {
 162                 LOG_ERROR("%s: failed to read Trace CSR: Control", target_name(target));
 163                 return retval;
 164         }
 165
 166         control |= CONTROL_SP;
 167
 168         retval = esirisc_jtag_write_csr(jtag_info, CSR_TRACE, CSR_TRACE_CONTROL, control);
 169         if (retval != ERROR_OK) {
 170                 LOG_ERROR("%s: failed to write Trace CSR: Control", target_name(target));
 171                 return retval;
 172         }
 173
 174         return ERROR_OK;
 175 }
 176
 177 static int esirisc_trace_init(struct target *target)
 178 {
 179         struct esirisc_common *esirisc = target_to_esirisc(target);
 180         struct esirisc_jtag *jtag_info = &esirisc->jtag_info;
 181         struct esirisc_trace *trace_info = &esirisc->trace_info;
 182         uint32_t control, trigger;
 183         int retval;
 184
 185         if (target->state != TARGET_HALTED)
 186                 return ERROR_TARGET_NOT_HALTED;
 187
 188         /* stop if running and clear status */
 189         retval = esirisc_trace_stop(target);
 190         if (retval != ERROR_OK)
 191                 return retval;
 192
 193         retval = esirisc_trace_clear_status(target);
 194         if (retval != ERROR_OK)
 195                 return retval;
 196
 197         /* initialize Control CSR */
 198         control = CONTROL_FMT(trace_info->format)
 199                         | CONTROL_PCB(trace_info->pc_bits);
 200
 201         if (trace_info->buffer_wrap)
 202                 control |= CONTROL_W;
 203
 204         if (trace_info->flow_control)
 205                 control |= CONTROL_FC;
 206
 207         retval = esirisc_jtag_write_csr(jtag_info, CSR_TRACE, CSR_TRACE_CONTROL, control);
 208         if (retval != ERROR_OK) {
 209                 LOG_ERROR("%s: failed to write Trace CSR: Control", target_name(target));
 210                 return retval;
 211         }
 212
 213         /* initialize buffer CSRs */
 214         retval = esirisc_jtag_write_csr(jtag_info, CSR_TRACE, CSR_TRACE_BUFFER_START,
 215                         trace_info->buffer_start);
 216         if (retval != ERROR_OK) {
 217                 LOG_ERROR("%s: failed to write Trace CSR: BufferStart", target_name(target));
 218                 return retval;
 219         }
 220
 221         retval = esirisc_jtag_write_csr(jtag_info, CSR_TRACE, CSR_TRACE_BUFFER_END,
 222                         trace_info->buffer_end);
 223         if (retval != ERROR_OK) {
 224                 LOG_ERROR("%s: failed to write Trace CSR: BufferEnd", target_name(target));
 225                 return retval;
 226         }
 227
 228         /*
 229          * The BufferCurrent CSR must be initialized to the same value as
 230          * BufferStart before tracing can be enabled:
 231          */
 232         retval = esirisc_jtag_write_csr(jtag_info, CSR_TRACE, CSR_TRACE_BUFFER_CUR,
 233                         trace_info->buffer_start);
 234         if (retval != ERROR_OK) {
 235                 LOG_ERROR("%s: failed to write Trace CSR: BufferCurrent", target_name(target));
 236                 return retval;
 237         }
 238
 239         /* initialize Trigger CSR */
 240         trigger = TRIGGER_TST(trace_info->start_trigger)
 241                         | TRIGGER_TSP(trace_info->stop_trigger);
 242
 243         if (trace_info->delay == ESIRISC_TRACE_DELAY_START
 244                 || trace_info->delay == ESIRISC_TRACE_DELAY_BOTH) {
 245                 trigger |= TRIGGER_DST;
 246         }
 247
 248         if (trace_info->delay == ESIRISC_TRACE_DELAY_STOP
 249                 || trace_info->delay == ESIRISC_TRACE_DELAY_BOTH) {
 250                 trigger |= TRIGGER_DSP;
 251         }
 252
 253         retval = esirisc_jtag_write_csr(jtag_info, CSR_TRACE, CSR_TRACE_TRIGGER, trigger);
 254         if (retval != ERROR_OK) {
 255                 LOG_ERROR("%s: failed to write Trace CSR: Trigger", target_name(target));
 256                 return retval;
 257         }
 258
 259         /* initialize StartData/StartMask CSRs */
 260         retval = esirisc_jtag_write_csr(jtag_info, CSR_TRACE, CSR_TRACE_START_DATA,
 261                         trace_info->start_data);
 262         if (retval != ERROR_OK) {
 263                 LOG_ERROR("%s: failed to write Trace CSR: StartData", target_name(target));
 264                 return retval;
 265         }
 266
 267         retval = esirisc_jtag_write_csr(jtag_info, CSR_TRACE, CSR_TRACE_START_MASK,
 268                         trace_info->start_mask);
 269         if (retval != ERROR_OK) {
 270                 LOG_ERROR("%s: failed to write Trace CSR: StartMask", target_name(target));
 271                 return retval;
 272         }
 273
 274         /* initialize StopData/StopMask CSRs */
 275         retval = esirisc_jtag_write_csr(jtag_info, CSR_TRACE, CSR_TRACE_STOP_DATA,
 276                         trace_info->stop_data);
 277         if (retval != ERROR_OK) {
 278                 LOG_ERROR("%s: failed to write Trace CSR: StopData", target_name(target));
 279                 return retval;
 280         }
 281
 282         retval = esirisc_jtag_write_csr(jtag_info, CSR_TRACE, CSR_TRACE_STOP_MASK,
 283                         trace_info->stop_mask);
 284         if (retval != ERROR_OK) {
 285                 LOG_ERROR("%s: failed to write Trace CSR: StopMask", target_name(target));
 286                 return retval;
 287         }
 288
 289         /* initialize Delay CSR */
 290         retval = esirisc_jtag_write_csr(jtag_info, CSR_TRACE, CSR_TRACE_DELAY,
 291                         trace_info->delay_cycles);
 292         if (retval != ERROR_OK) {
 293                 LOG_ERROR("%s: failed to write Trace CSR: Delay", target_name(target));
 294                 return retval;
 295         }
 296
 297         return ERROR_OK;
 298 }
 299
 300 static int esirisc_trace_buf_get_u32(uint8_t *buffer, uint32_t size,
 301                 unsigned *pos, unsigned count, uint32_t *value)
 302 {
 303         const unsigned num_bits = size * 8;
 304
 305         if (*pos+count > num_bits)
 306                 return ERROR_FAIL;
 307
 308         *value = buf_get_u32(buffer, *pos, count);
 309         *pos += count;
 310
 311         return ERROR_OK;
 312 }
 313
 314 static int esirisc_trace_buf_get_pc(struct target *target, uint8_t *buffer, uint32_t size,
 315                 unsigned *pos, uint32_t *value)
 316 {
 317         struct esirisc_common *esirisc = target_to_esirisc(target);
 318         struct esirisc_trace *trace_info = &esirisc->trace_info;
 319         int retval;
 320
 321         retval = esirisc_trace_buf_get_u32(buffer, size, pos, trace_info->pc_bits, value);
 322         if (retval != ERROR_OK)
 323                 return retval;
 324
 325         *value <<= esirisc->num_bits - trace_info->pc_bits;
 326
 327         return ERROR_OK;
 328 }
 329
 330 static int esirisc_trace_read_memory(struct target *target, target_addr_t address, uint32_t size,
 331                 uint8_t *buffer)
 332 {
 333         int retval;
 334
 335         if (target->state != TARGET_HALTED)
 336                 return ERROR_TARGET_NOT_HALTED;
 337
 338         retval = target_read_memory(target, address, 1, size, buffer);
 339         if (retval != ERROR_OK) {
 340                 LOG_ERROR("%s: failed to read trace data", target_name(target));
 341                 return retval;
 342         }
 343
 344         return ERROR_OK;
 345 }
 346
 347 static int esirisc_trace_read_buffer(struct target *target, uint8_t *buffer)
 348 {
 349         struct esirisc_common *esirisc = target_to_esirisc(target);
 350         struct esirisc_jtag *jtag_info = &esirisc->jtag_info;
 351         struct esirisc_trace *trace_info = &esirisc->trace_info;
 352         uint32_t buffer_cur, status;
 353         int retval;
 354
 355         if (target->state != TARGET_HALTED)
 356                 return ERROR_TARGET_NOT_HALTED;
 357
 358         retval = esirisc_jtag_read_csr(jtag_info, CSR_TRACE, CSR_TRACE_BUFFER_CUR, &buffer_cur);
 359         if (retval != ERROR_OK) {
 360                 LOG_ERROR("%s: failed to read Trace CSR: BufferCurrent", target_name(target));
 361                 return retval;
 362         }
 363
 364         /*
 365          * If the buffer has wrapped, the BufferCurrent CSR indicates the
 366          * next address to be written (ie. the start address). These bytes
 367          * must be dumped first to maintain coherency when analyzing
 368          * captured data.
 369          */
 370         retval = esirisc_trace_get_status(target, &status);
 371         if (retval != ERROR_OK)
 372                 return retval;
 373
 374         if (status & STATUS_W) {
 375                 uint32_t size = trace_info->buffer_end - buffer_cur;
 376
 377                 retval = esirisc_trace_read_memory(target, buffer_cur, size, buffer);
 378                 if (retval != ERROR_OK)
 379                         return retval;
 380
 381                 buffer += size;
 382         }
 383
 384         return esirisc_trace_read_memory(target, trace_info->buffer_start,
 385                         buffer_cur - trace_info->buffer_start, buffer);
 386 }
 387
 388 static int esirisc_trace_analyze_full(struct command_context *cmd_ctx, uint8_t *buffer, uint32_t size)
 389 {
 390         struct target *target = get_current_target(cmd_ctx);
 391         const uint32_t num_bits = size * 8;
 392         int retval;
 393
 394         unsigned pos = 0;
 395         while (pos < num_bits) {
 396                 uint32_t id;
 397
 398                 retval = esirisc_trace_buf_get_u32(buffer, size, &pos, 2, &id);
 399                 if (retval != ERROR_OK)
 400                         goto fail;
 401
 402                 switch (id) {
 403                         case ESIRISC_TRACE_ID_EXECUTE:
 404                         case ESIRISC_TRACE_ID_STALL:
 405                         case ESIRISC_TRACE_ID_BRANCH:
 406                                 command_print(cmd_ctx, "%s", esirisc_trace_id_strings[id]);
 407                                 break;
 408
 409                         case ESIRISC_TRACE_ID_EXTENDED: {
 410                                 uint32_t ext_id;
 411
 412                                 retval = esirisc_trace_buf_get_u32(buffer, size, &pos, 4, &ext_id);
 413                                 if (retval != ERROR_OK)
 414                                         goto fail;
 415
 416                                 switch (ext_id) {
 417                                         case ESIRISC_TRACE_EXT_ID_STOP:
 418                                         case ESIRISC_TRACE_EXT_ID_WAIT:
 419                                         case ESIRISC_TRACE_EXT_ID_MULTICYCLE:
 420                                                 command_print(cmd_ctx, "%s", esirisc_trace_ext_id_strings[ext_id]);
 421                                                 break;
 422
 423                                         case ESIRISC_TRACE_EXT_ID_ERET:
 424                                         case ESIRISC_TRACE_EXT_ID_PC:
 425                                         case ESIRISC_TRACE_EXT_ID_INDIRECT:
 426                                         case ESIRISC_TRACE_EXT_ID_END_PC: {
 427                                                 uint32_t pc;
 428
 429                                                 retval = esirisc_trace_buf_get_pc(target, buffer, size, &pos, &pc);
 430                                                 if (retval != ERROR_OK)
 431                                                         goto fail;
 432
 433                                                 command_print(cmd_ctx, "%s PC: 0x%" PRIx32,
 434                                                                 esirisc_trace_ext_id_strings[ext_id], pc);
 435
 436                                                 if (ext_id == ESIRISC_TRACE_EXT_ID_END_PC) {
 437                                                         command_print(cmd_ctx, "--- end of trace ---");
 438                                                         return ERROR_OK;
 439                                                 }
 440                                                 break;
 441                                         }
 442                                         case ESIRISC_TRACE_EXT_ID_EXCEPTION: {
 443                                                 uint32_t eid, epc;
 444
 445                                                 retval = esirisc_trace_buf_get_u32(buffer, size, &pos, 6, &eid);
 446                                                 if (retval != ERROR_OK)
 447                                                         goto fail;
 448
 449                                                 retval = esirisc_trace_buf_get_pc(target, buffer, size, &pos, &epc);
 450                                                 if (retval != ERROR_OK)
 451                                                         goto fail;
 452
 453                                                 command_print(cmd_ctx, "%s EID: 0x%" PRIx32 ", EPC: 0x%" PRIx32,
 454                                                                 esirisc_trace_ext_id_strings[ext_id], eid, epc);
 455                                                 break;
 456                                         }
 457                                         case ESIRISC_TRACE_EXT_ID_COUNT: {
 458                                                 uint32_t count;
 459
 460                                                 retval = esirisc_trace_buf_get_u32(buffer, size, &pos, 6, &count);
 461                                                 if (retval != ERROR_OK)
 462                                                         goto fail;
 463
 464                                                 command_print(cmd_ctx, "repeats %" PRId32 " %s", count,
 465                                                                 (count == 1) ? "time" : "times");
 466                                                 break;
 467                                         }
 468                                         case ESIRISC_TRACE_EXT_ID_END:
 469                                                 command_print(cmd_ctx, "--- end of trace ---");
 470                                                 return ERROR_OK;
 471
 472                                         default:
 473                                                 command_print(cmd_ctx, "invalid extended trace ID: %" PRId32, ext_id);
 474                                                 return ERROR_FAIL;
 475                                 }
 476                                 break;
 477                         }
 478                         default:
 479                                 command_print(cmd_ctx, "invalid trace ID: %" PRId32, id);
 480                                 return ERROR_FAIL;
 481                 }
 482         }
 483
 484 fail:
 485         command_print(cmd_ctx, "trace buffer too small");
 486         return ERROR_BUF_TOO_SMALL;
 487 }
 488
 489 static int esirisc_trace_analyze_simple(struct command_context *cmd_ctx, uint8_t *buffer, uint32_t size)
 490 {
 491         struct target *target = get_current_target(cmd_ctx);
 492         struct esirisc_common *esirisc = target_to_esirisc(target);
 493         struct esirisc_trace *trace_info = &esirisc->trace_info;
 494         const uint32_t end_of_trace = BIT_MASK(trace_info->pc_bits) << 1;
 495         const uint32_t num_bits = size * 8;
 496         int retval;
 497
 498         unsigned pos = 0;
 499         while (pos < num_bits) {
 500                 uint32_t pc;
 501
 502                 retval = esirisc_trace_buf_get_pc(target, buffer, size, &pos, &pc);
 503                 if (retval != ERROR_OK)
 504                         break;
 505
 506                 if (pc == end_of_trace) {
 507                         command_print(cmd_ctx, "--- end of trace ---");
 508                         return ERROR_OK;
 509                 }
 510
 511                 command_print(cmd_ctx, "PC: 0x%" PRIx32, pc);
 512         }
 513
 514         command_print(cmd_ctx, "trace buffer too small");
 515         return ERROR_BUF_TOO_SMALL;
 516 }
 517
 518 static int esirisc_trace_analyze(struct command_context *cmd_ctx, uint8_t *buffer, uint32_t size)
 519 {
 520         struct target *target = get_current_target(cmd_ctx);
 521         struct esirisc_common *esirisc = target_to_esirisc(target);
 522         struct esirisc_trace *trace_info = &esirisc->trace_info;
 523
 524         switch (trace_info->format) {
 525                 case ESIRISC_TRACE_FORMAT_FULL:
 526                         command_print(cmd_ctx, "--- full pipeline ---");
 527                         return esirisc_trace_analyze_full(cmd_ctx, buffer, size);
 528
 529                 case ESIRISC_TRACE_FORMAT_BRANCH:
 530                         command_print(cmd_ctx, "--- branches taken ---");
 531                         return esirisc_trace_analyze_full(cmd_ctx, buffer, size);
 532
 533                 case ESIRISC_TRACE_FORMAT_ICACHE:
 534                         command_print(cmd_ctx, "--- icache misses ---");
 535                         return esirisc_trace_analyze_simple(cmd_ctx, buffer, size);
 536
 537                 default:
 538                         command_print(cmd_ctx, "invalid trace format: %i", trace_info->format);
 539                         return ERROR_FAIL;
 540         }
 541 }
 542
 543 static int esirisc_trace_analyze_buffer(struct command_context *cmd_ctx)
 544 {
 545         struct target *target = get_current_target(cmd_ctx);
 546         struct esirisc_common *esirisc = target_to_esirisc(target);
 547         struct esirisc_trace *trace_info = &esirisc->trace_info;
 548         uint8_t *buffer;
 549         uint32_t size;
 550         int retval;
 551
 552         size = esirisc_trace_buffer_size(trace_info);
 553         buffer = calloc(1, size);
 554         if (buffer == NULL) {
 555                 command_print(cmd_ctx, "out of memory");
 556                 return ERROR_FAIL;
 557         }
 558
 559         retval = esirisc_trace_read_buffer(target, buffer);
 560         if (retval != ERROR_OK)
 561                 goto done;
 562
 563         retval = esirisc_trace_analyze(cmd_ctx, buffer, size);
 564
 565 done:
 566         free(buffer);
 567
 568         return retval;
 569 }
 570
 571 static int esirisc_trace_analyze_memory(struct command_context *cmd_ctx,
 572                 target_addr_t address, uint32_t size)
 573 {
 574         struct target *target = get_current_target(cmd_ctx);
 575         uint8_t *buffer;
 576         int retval;
 577
 578         buffer = calloc(1, size);
 579         if (buffer == NULL) {
 580                 command_print(cmd_ctx, "out of memory");
 581                 return ERROR_FAIL;
 582         }
 583
 584         retval = esirisc_trace_read_memory(target, address, size, buffer);
 585         if (retval != ERROR_OK)
 586                 goto done;
 587
 588         retval = esirisc_trace_analyze(cmd_ctx, buffer, size);
 589
 590 done:
 591         free(buffer);
 592
 593         return retval;
 594 }
 595
 596 static int esirisc_trace_dump(struct command_context *cmd_ctx, const char *filename,
 597                 uint8_t *buffer, uint32_t size)
 598 {
 599         struct fileio *fileio;
 600         size_t size_written;
 601         int retval;
 602
 603         retval = fileio_open(&fileio, filename, FILEIO_WRITE, FILEIO_BINARY);
 604         if (retval != ERROR_OK) {
 605                 command_print(cmd_ctx, "could not open dump file: %s", filename);
 606                 return retval;
 607         }
 608
 609         retval = fileio_write(fileio, size, buffer, &size_written);
 610         if (retval == ERROR_OK)
 611                 command_print(cmd_ctx, "trace data dumped to: %s", filename);
 612         else
 613                 command_print(cmd_ctx, "could not write dump file: %s", filename);
 614
 615         fileio_close(fileio);
 616
 617         return retval;
 618 }
 619
 620 static int esirisc_trace_dump_buffer(struct command_context *cmd_ctx, const char *filename)
 621 {
 622         struct target *target = get_current_target(cmd_ctx);
 623         struct esirisc_common *esirisc = target_to_esirisc(target);
 624         struct esirisc_trace *trace_info = &esirisc->trace_info;
 625         uint8_t *buffer;
 626         uint32_t size;
 627         int retval;
 628
 629         size = esirisc_trace_buffer_size(trace_info);
 630         buffer = calloc(1, size);
 631         if (buffer == NULL) {
 632                 command_print(cmd_ctx, "out of memory");
 633                 return ERROR_FAIL;
 634         }
 635
 636         retval = esirisc_trace_read_buffer(target, buffer);
 637         if (retval != ERROR_OK)
 638                 goto done;
 639
 640         retval = esirisc_trace_dump(cmd_ctx, filename, buffer, size);
 641
 642 done:
 643         free(buffer);
 644
 645         return retval;
 646 }
 647
 648 static int esirisc_trace_dump_memory(struct command_context *cmd_ctx, const char *filename,
 649                 target_addr_t address, uint32_t size)
 650 {
 651         struct target *target = get_current_target(cmd_ctx);
 652         uint8_t *buffer;
 653         int retval;
 654
 655         buffer = calloc(1, size);
 656         if (buffer == NULL) {
 657                 command_print(cmd_ctx, "out of memory");
 658                 return ERROR_FAIL;
 659         }
 660
 661         retval = esirisc_trace_read_memory(target, address, size, buffer);
 662         if (retval != ERROR_OK)
 663                 goto done;
 664
 665         retval = esirisc_trace_dump(cmd_ctx, filename, buffer, size);
 666
 667 done:
 668         free(buffer);
 669
 670         return retval;
 671 }
 672
 673 COMMAND_HANDLER(handle_esirisc_trace_init_command)
 674 {
 675         struct target *target = get_current_target(CMD_CTX);
 676         struct esirisc_common *esirisc = target_to_esirisc(target);
 677
 678         if (!esirisc->has_trace) {
 679                 command_print(CMD_CTX, "target does not support trace");
 680                 return ERROR_FAIL;
 681         }
 682
 683         int retval = esirisc_trace_init(target);
 684         if (retval == ERROR_OK)
 685                 command_print(CMD_CTX, "trace initialized");
 686
 687         return retval;
 688 }
 689
 690 COMMAND_HANDLER(handle_esirisc_trace_info_command)
 691 {
 692         struct target *target = get_current_target(CMD_CTX);
 693         struct esirisc_common *esirisc = target_to_esirisc(target);
 694         struct esirisc_trace *trace_info = &esirisc->trace_info;
 695
 696         if (!esirisc->has_trace) {
 697                 command_print(CMD_CTX, "target does not support trace");
 698                 return ERROR_FAIL;
 699         }
 700
 701         if (esirisc_trace_is_fifo(trace_info))
 702                 command_print(CMD_CTX, "trace FIFO address: 0x%" TARGET_PRIxADDR,
 703                                 trace_info->buffer_start);
 704         else {
 705                 command_print(CMD_CTX, "trace buffer start: 0x%" TARGET_PRIxADDR,
 706                                 trace_info->buffer_start);
 707                 command_print(CMD_CTX, "trace buffer end: 0x%" TARGET_PRIxADDR,
 708                                 trace_info->buffer_end);
 709                 command_print(CMD_CTX, "trace buffer will %swrap",
 710                                 trace_info->buffer_wrap ? "" : "not ");
 711         }
 712
 713         command_print(CMD_CTX, "flow control: %s",
 714                         trace_info->flow_control ? "enabled" : "disabled");
 715
 716         command_print(CMD_CTX, "trace format: %s",
 717                         esirisc_trace_format_strings[trace_info->format]);
 718         command_print(CMD_CTX, "number of PC bits: %i", trace_info->pc_bits);
 719
 720         command_print(CMD_CTX, "start trigger: %s",
 721                         esirisc_trace_trigger_strings[trace_info->start_trigger]);
 722         command_print(CMD_CTX, "start data: 0x%" PRIx32, trace_info->start_data);
 723         command_print(CMD_CTX, "start mask: 0x%" PRIx32, trace_info->start_mask);
 724
 725         command_print(CMD_CTX, "stop trigger: %s",
 726                         esirisc_trace_trigger_strings[trace_info->stop_trigger]);
 727         command_print(CMD_CTX, "stop data: 0x%" PRIx32, trace_info->stop_data);
 728         command_print(CMD_CTX, "stop mask: 0x%" PRIx32, trace_info->stop_mask);
 729
 730         command_print(CMD_CTX, "trigger delay: %s",
 731                         esirisc_trace_delay_strings[trace_info->delay]);
 732         command_print(CMD_CTX, "trigger delay cycles: %i", trace_info->delay_cycles);
 733
 734         return ERROR_OK;
 735 }
 736
 737 COMMAND_HANDLER(handle_esirisc_trace_status_command)
 738 {
 739         struct target *target = get_current_target(CMD_CTX);
 740         struct esirisc_common *esirisc = target_to_esirisc(target);
 741         uint32_t status;
 742
 743         if (!esirisc->has_trace) {
 744                 command_print(CMD_CTX, "target does not support trace");
 745                 return ERROR_FAIL;
 746         }
 747
 748         int retval = esirisc_trace_get_status(target, &status);
 749         if (retval != ERROR_OK)
 750                 return retval;
 751
 752         command_print(CMD_CTX, "trace is %s%s%s%s",
 753                         (status & STATUS_T)  ? "started" : "stopped",
 754                         (status & STATUS_TD) ? ", disabled"   : "",
 755                         (status & STATUS_W)  ? ", wrapped"    : "",
 756                         (status & STATUS_O)  ? ", overflowed" : "");
 757
 758         return ERROR_OK;
 759 }
 760
 761 COMMAND_HANDLER(handle_esirisc_trace_start_command)
 762 {
 763         struct target *target = get_current_target(CMD_CTX);
 764         struct esirisc_common *esirisc = target_to_esirisc(target);
 765
 766         if (!esirisc->has_trace) {
 767                 command_print(CMD_CTX, "target does not support trace");
 768                 return ERROR_FAIL;
 769         }
 770
 771         int retval = esirisc_trace_start(target);
 772         if (retval == ERROR_OK)
 773                 command_print(CMD_CTX, "trace started");
 774
 775         return retval;
 776 }
 777
 778 COMMAND_HANDLER(handle_esirisc_trace_stop_command)
 779 {
 780         struct target *target = get_current_target(CMD_CTX);
 781         struct esirisc_common *esirisc = target_to_esirisc(target);
 782
 783         if (!esirisc->has_trace) {
 784                 command_print(CMD_CTX, "target does not support trace");
 785                 return ERROR_FAIL;
 786         }
 787
 788         int retval = esirisc_trace_stop(target);
 789         if (retval == ERROR_OK)
 790                 command_print(CMD_CTX, "trace stopped");
 791
 792         return retval;
 793 }
 794
 795 COMMAND_HANDLER(handle_esirisc_trace_analyze_command)
 796 {
 797         struct target *target = get_current_target(CMD_CTX);
 798         struct esirisc_common *esirisc = target_to_esirisc(target);
 799         struct esirisc_trace *trace_info = &esirisc->trace_info;
 800         target_addr_t address;
 801         uint32_t size;
 802
 803         if (!esirisc->has_trace) {
 804                 command_print(CMD_CTX, "target does not support trace");
 805                 return ERROR_FAIL;
 806         }
 807
 808         if (CMD_ARGC != 0 && CMD_ARGC != 2)
 809                 return ERROR_COMMAND_SYNTAX_ERROR;
 810
 811         if (CMD_ARGC == 0) {
 812                 /*
 813                  * Use of the Trace FIFO typically involves DMA to a peripheral
 814                  * (eg. SPI) or a separately managed buffer in memory, neither
 815                  * of which may be under our control. If the destination address
 816                  * and size are known in the latter case, they may be specified
 817                  * as arguments as a workaround.
 818                  */
 819                 if (esirisc_trace_is_fifo(trace_info)) {
 820                         command_print(CMD_CTX, "analyze from FIFO not supported");
 821                         return ERROR_FAIL;
 822                 }
 823
 824                 return esirisc_trace_analyze_buffer(CMD_CTX);
 825         } else {
 826                 COMMAND_PARSE_ADDRESS(CMD_ARGV[0], address);
 827                 COMMAND_PARSE_NUMBER(u32, CMD_ARGV[1], size);
 828
 829                 return esirisc_trace_analyze_memory(CMD_CTX, address, size);
 830         }
 831 }
 832
 833 COMMAND_HANDLER(handle_esirisc_trace_dump_command)
 834 {
 835         struct target *target = get_current_target(CMD_CTX);
 836         struct esirisc_common *esirisc = target_to_esirisc(target);
 837         struct esirisc_trace *trace_info = &esirisc->trace_info;
 838         target_addr_t address;
 839         uint32_t size;
 840
 841         if (!esirisc->has_trace) {
 842                 command_print(CMD_CTX, "target does not support trace");
 843                 return ERROR_FAIL;
 844         }
 845
 846         if (CMD_ARGC != 1 && CMD_ARGC != 3)
 847                 return ERROR_COMMAND_SYNTAX_ERROR;
 848
 849         if (CMD_ARGC == 1) {
 850                 /* also see: handle_esirisc_trace_analyze_command() */
 851                 if (esirisc_trace_is_fifo(trace_info)) {
 852                         command_print(CMD_CTX, "dump from FIFO not supported");
 853                         return ERROR_FAIL;
 854                 }
 855
 856                 return esirisc_trace_dump_buffer(CMD_CTX, CMD_ARGV[0]);
 857         } else {
 858                 COMMAND_PARSE_ADDRESS(CMD_ARGV[0], address);
 859                 COMMAND_PARSE_NUMBER(u32, CMD_ARGV[1], size);
 860
 861                 return esirisc_trace_dump_memory(CMD_CTX, CMD_ARGV[2], address, size);
 862         }
 863 }
 864
 865 COMMAND_HANDLER(handle_esirisc_trace_buffer_command)
 866 {
 867         struct target *target = get_current_target(CMD_CTX);
 868         struct esirisc_common *esirisc = target_to_esirisc(target);
 869         struct esirisc_trace *trace_info = &esirisc->trace_info;
 870         uint32_t size;
 871
 872         if (CMD_ARGC < 2 || CMD_ARGC > 3)
 873                 return ERROR_COMMAND_SYNTAX_ERROR;
 874
 875         COMMAND_PARSE_ADDRESS(CMD_ARGV[0], trace_info->buffer_start);
 876         COMMAND_PARSE_NUMBER(u32, CMD_ARGV[1], size);
 877
 878         trace_info->buffer_end = trace_info->buffer_start + size;
 879
 880         if (CMD_ARGC == 3) {
 881                 if (strcmp("wrap", CMD_ARGV[2]) == 0)
 882                         trace_info->buffer_wrap = true;
 883                 else
 884                         return ERROR_COMMAND_SYNTAX_ERROR;
 885         }
 886
 887         return ERROR_OK;
 888 }
 889
 890 COMMAND_HANDLER(handle_esirisc_trace_fifo_command)
 891 {
 892         struct target *target = get_current_target(CMD_CTX);
 893         struct esirisc_common *esirisc = target_to_esirisc(target);
 894         struct esirisc_trace *trace_info = &esirisc->trace_info;
 895
 896         if (CMD_ARGC != 1)
 897                 return ERROR_COMMAND_SYNTAX_ERROR;
 898
 899         COMMAND_PARSE_ADDRESS(CMD_ARGV[0], trace_info->buffer_start);
 900
 901         /* FIFOs have the same start and end address */
 902         trace_info->buffer_end = trace_info->buffer_start;
 903         trace_info->buffer_wrap = true;
 904
 905         return ERROR_OK;
 906 }
 907
 908 COMMAND_HANDLER(handle_esirisc_trace_flow_control_command)
 909 {
 910         struct target *target = get_current_target(CMD_CTX);
 911         struct esirisc_common *esirisc = target_to_esirisc(target);
 912         struct esirisc_trace *trace_info = &esirisc->trace_info;
 913
 914         if (CMD_ARGC != 1)
 915                 return ERROR_COMMAND_SYNTAX_ERROR;
 916
 917         if (strcmp(CMD_ARGV[0], "enable") == 0)
 918                 trace_info->flow_control = true;
 919         else if (strcmp(CMD_ARGV[0], "disable") == 0)
 920                 trace_info->flow_control = false;
 921         else
 922                 return ERROR_COMMAND_SYNTAX_ERROR;
 923
 924         return ERROR_OK;
 925 }
 926
 927 COMMAND_HANDLER(handle_esirisc_trace_format_command)
 928 {
 929         struct target *target = get_current_target(CMD_CTX);
 930         struct esirisc_common *esirisc = target_to_esirisc(target);
 931         struct esirisc_trace *trace_info = &esirisc->trace_info;
 932         int pc_bits;
 933
 934         if (CMD_ARGC != 2)
 935                 return ERROR_COMMAND_SYNTAX_ERROR;
 936
 937         if (strcmp(CMD_ARGV[0], "full") == 0)
 938                 trace_info->format = ESIRISC_TRACE_FORMAT_FULL;
 939         else if (strcmp(CMD_ARGV[0], "branch") == 0)
 940                 trace_info->format = ESIRISC_TRACE_FORMAT_BRANCH;
 941         else if (strcmp(CMD_ARGV[0], "icache") == 0)
 942                 trace_info->format = ESIRISC_TRACE_FORMAT_ICACHE;
 943         else
 944                 return ERROR_COMMAND_SYNTAX_ERROR;
 945
 946         COMMAND_PARSE_NUMBER(int, CMD_ARGV[1], pc_bits);
 947
 948         if (pc_bits < 1 || pc_bits > 31) {
 949                 command_print(CMD_CTX, "invalid pc_bits: %i; must be 1..31", pc_bits);
 950                 return ERROR_COMMAND_SYNTAX_ERROR;
 951         }
 952
 953         trace_info->pc_bits = pc_bits;
 954
 955         return ERROR_OK;
 956 }
 957
 958 COMMAND_HANDLER(handle_esirisc_trace_trigger_start_command)
 959 {
 960         struct target *target = get_current_target(CMD_CTX);
 961         struct esirisc_common *esirisc = target_to_esirisc(target);
 962         struct esirisc_trace *trace_info = &esirisc->trace_info;
 963
 964         if (CMD_ARGC != 1 && CMD_ARGC != 3)
 965                 return ERROR_COMMAND_SYNTAX_ERROR;
 966
 967         if (strcmp(CMD_ARGV[0], "none") == 0)
 968                 trace_info->start_trigger = ESIRISC_TRACE_TRIGGER_NONE;
 969         else if (strcmp(CMD_ARGV[0], "pc") == 0)
 970                 trace_info->start_trigger = ESIRISC_TRACE_TRIGGER_PC;
 971         else if (strcmp(CMD_ARGV[0], "load") == 0)
 972                 trace_info->start_trigger = ESIRISC_TRACE_TRIGGER_LOAD;
 973         else if (strcmp(CMD_ARGV[0], "store") == 0)
 974                 trace_info->start_trigger = ESIRISC_TRACE_TRIGGER_STORE;
 975         else if (strcmp(CMD_ARGV[0], "exception") == 0)
 976                 trace_info->start_trigger = ESIRISC_TRACE_TRIGGER_EXCEPTION;
 977         else if (strcmp(CMD_ARGV[0], "eret") == 0)
 978                 trace_info->start_trigger = ESIRISC_TRACE_TRIGGER_ERET;
 979         else if (strcmp(CMD_ARGV[0], "wait") == 0)
 980                 trace_info->start_trigger = ESIRISC_TRACE_TRIGGER_WAIT;
 981         else if (strcmp(CMD_ARGV[0], "stop") == 0)
 982                 trace_info->start_trigger = ESIRISC_TRACE_TRIGGER_STOP;
 983         else if (strcmp(CMD_ARGV[0], "high") == 0)
 984                 trace_info->start_trigger = ESIRISC_TRACE_TRIGGER_HIGH;
 985         else if (strcmp(CMD_ARGV[0], "low") == 0)
 986                 trace_info->start_trigger = ESIRISC_TRACE_TRIGGER_LOW;
 987         else
 988                 return ERROR_COMMAND_SYNTAX_ERROR;
 989
 990         if (CMD_ARGC == 3) {
 991                 COMMAND_PARSE_NUMBER(u32, CMD_ARGV[1], trace_info->start_data);
 992                 COMMAND_PARSE_NUMBER(u32, CMD_ARGV[2], trace_info->start_mask);
 993         } else {
 994                 trace_info->start_data = 0;
 995                 trace_info->start_mask = 0;
 996         }
 997
 998         return ERROR_OK;
 999 }
1000
1001 COMMAND_HANDLER(handle_esirisc_trace_trigger_stop_command)
1002 {
1003         struct target *target = get_current_target(CMD_CTX);
1004         struct esirisc_common *esirisc = target_to_esirisc(target);
1005         struct esirisc_trace *trace_info = &esirisc->trace_info;
1006
1007         if (CMD_ARGC != 1 && CMD_ARGC != 3)
1008                 return ERROR_COMMAND_SYNTAX_ERROR;
1009
1010         if (strcmp(CMD_ARGV[0], "none") == 0)
1011                 trace_info->stop_trigger = ESIRISC_TRACE_TRIGGER_NONE;
1012         else if (strcmp(CMD_ARGV[0], "pc") == 0)
1013                 trace_info->stop_trigger = ESIRISC_TRACE_TRIGGER_PC;
1014         else if (strcmp(CMD_ARGV[0], "load") == 0)
1015                 trace_info->stop_trigger = ESIRISC_TRACE_TRIGGER_LOAD;
1016         else if (strcmp(CMD_ARGV[0], "store") == 0)
1017                 trace_info->stop_trigger = ESIRISC_TRACE_TRIGGER_STORE;
1018         else if (strcmp(CMD_ARGV[0], "exception") == 0)
1019                 trace_info->stop_trigger = ESIRISC_TRACE_TRIGGER_EXCEPTION;
1020         else if (strcmp(CMD_ARGV[0], "eret") == 0)
1021                 trace_info->stop_trigger = ESIRISC_TRACE_TRIGGER_ERET;
1022         else if (strcmp(CMD_ARGV[0], "wait") == 0)
1023                 trace_info->stop_trigger = ESIRISC_TRACE_TRIGGER_WAIT;
1024         else if (strcmp(CMD_ARGV[0], "stop") == 0)
1025                 trace_info->stop_trigger = ESIRISC_TRACE_TRIGGER_STOP;
1026         else
1027                 return ERROR_COMMAND_SYNTAX_ERROR;
1028
1029         if (CMD_ARGC == 3) {
1030                 COMMAND_PARSE_NUMBER(u32, CMD_ARGV[1], trace_info->stop_data);
1031                 COMMAND_PARSE_NUMBER(u32, CMD_ARGV[2], trace_info->stop_mask);
1032         } else {
1033                 trace_info->stop_data = 0;
1034                 trace_info->stop_mask = 0;
1035         }
1036
1037         return ERROR_OK;
1038 }
1039
1040 COMMAND_HANDLER(handle_esirisc_trace_trigger_delay_command)
1041 {
1042         struct target *target = get_current_target(CMD_CTX);
1043         struct esirisc_common *esirisc = target_to_esirisc(target);
1044         struct esirisc_trace *trace_info = &esirisc->trace_info;
1045
1046         if (CMD_ARGC < 1 || CMD_ARGC > 2)
1047                 return ERROR_COMMAND_SYNTAX_ERROR;
1048
1049         if (strcmp(CMD_ARGV[0], "none") == 0)
1050                 trace_info->delay = ESIRISC_TRACE_DELAY_NONE;
1051         else if (strcmp(CMD_ARGV[0], "start") == 0)
1052                 trace_info->delay = ESIRISC_TRACE_DELAY_START;
1053         else if (strcmp(CMD_ARGV[0], "stop") == 0)
1054                 trace_info->delay = ESIRISC_TRACE_DELAY_STOP;
1055         else if (strcmp(CMD_ARGV[0], "both") == 0)
1056                 trace_info->delay = ESIRISC_TRACE_DELAY_BOTH;
1057         else
1058                 return ERROR_COMMAND_SYNTAX_ERROR;
1059
1060         if (trace_info->delay == ESIRISC_TRACE_DELAY_NONE)
1061                 trace_info->delay_cycles = 0;
1062         else {
1063                 if (CMD_ARGC != 2)
1064                         return ERROR_COMMAND_SYNTAX_ERROR;
1065
1066                 COMMAND_PARSE_NUMBER(u32, CMD_ARGV[1], trace_info->delay_cycles);
1067         }
1068
1069         return ERROR_OK;
1070 }
1071
1072 static const struct command_registration esirisc_trace_exec_command_handlers[] = {
1073         {
1074                 .name = "init",
1075                 .handler = handle_esirisc_trace_init_command,
1076                 .mode = COMMAND_EXEC,
1077                 .help = "initialize trace collection",
1078                 .usage = "",
1079         },
1080         {
1081                 .name = "info",
1082                 .handler = handle_esirisc_trace_info_command,
1083                 .mode = COMMAND_EXEC,
1084                 .help = "display trace configuration",
1085                 .usage = "",
1086         },
1087         {
1088                 .name = "status",
1089                 .handler = handle_esirisc_trace_status_command,
1090                 .mode = COMMAND_EXEC,
1091                 .help = "display trace collection status",
1092                 .usage = "",
1093         },
1094         {
1095                 .name = "start",
1096                 .handler = handle_esirisc_trace_start_command,
1097                 .mode = COMMAND_EXEC,
1098                 .help = "start trace collection",
1099                 .usage = "",
1100         },
1101         {
1102                 .name = "stop",
1103                 .handler = handle_esirisc_trace_stop_command,
1104                 .mode = COMMAND_EXEC,
1105                 .help = "stop trace collection",
1106                 .usage = "",
1107         },
1108         {
1109                 .name = "analyze",
1110                 .handler = handle_esirisc_trace_analyze_command,
1111                 .mode = COMMAND_EXEC,
1112                 .usage = "[address size]",
1113                 .help = "analyze collected trace data",
1114         },
1115         {
1116                 .name = "dump",
1117                 .handler = handle_esirisc_trace_dump_command,
1118                 .mode = COMMAND_EXEC,
1119                 .help = "dump collected trace data to file",
1120                 .usage = "[address size] filename",
1121         },
1122         COMMAND_REGISTRATION_DONE
1123 };
1124
1125 static const struct command_registration esirisc_trace_trigger_any_command_handlers[] = {
1126         {
1127                 .name = "start",
1128                 .handler = handle_esirisc_trace_trigger_start_command,
1129                 .mode = COMMAND_ANY,
1130                 .help = "configure trigger start condition",
1131                 .usage = "('none'|'pc'|'load'|'store'|'exception'|'eret'|'wait'|'stop'|'high'|'low')"
1132                                  " [start_data start_mask]",
1133         },
1134         {
1135                 .name = "stop",
1136                 .handler = handle_esirisc_trace_trigger_stop_command,
1137                 .mode = COMMAND_ANY,
1138                 .help = "configure trigger stop condition",
1139                 .usage = "('none'|'pc'|'load'|'store'|'exception'|'eret'|'wait'|'stop')"
1140                                  " [stop_data stop_mask]",
1141         },
1142         {
1143                 .name = "delay",
1144                 .handler = handle_esirisc_trace_trigger_delay_command,
1145                 .mode = COMMAND_ANY,
1146                 .help = "configure trigger start/stop delay in clock cycles",
1147                 .usage = "('none'|'start'|'stop'|'both') [cycles]",
1148         },
1149         COMMAND_REGISTRATION_DONE
1150 };
1151
1152 static const struct command_registration esirisc_trace_any_command_handlers[] = {
1153         {
1154                 .name = "buffer",
1155                 .handler = handle_esirisc_trace_buffer_command,
1156                 .mode = COMMAND_ANY,
1157                 .help = "configure trace buffer",
1158                 .usage = "address size ['wrap']",
1159         },
1160         {
1161                 .name = "fifo",
1162                 .handler = handle_esirisc_trace_fifo_command,
1163                 .mode = COMMAND_ANY,
1164                 .help = "configure trace FIFO",
1165                 .usage = "address",
1166         },
1167         {
1168                 .name = "flow_control",
1169                 .handler = handle_esirisc_trace_flow_control_command,
1170                 .mode = COMMAND_ANY,
1171                 .help = "enable or disable stalling CPU to collect trace data",
1172                 .usage = "('enable'|'disable')",
1173         },
1174         {
1175                 .name = "format",
1176                 .handler = handle_esirisc_trace_format_command,
1177                 .mode = COMMAND_ANY,
1178                 .help = "configure trace format",
1179                 .usage = "('full'|'branch'|'icache') pc_bits",
1180         },
1181         {
1182                 .name = "trigger",
1183                 .mode = COMMAND_ANY,
1184                 .help = "eSi-Trace trigger command group",
1185                 .usage = "",
1186                 .chain = esirisc_trace_trigger_any_command_handlers,
1187         },
1188         {
1189                 .chain = esirisc_trace_exec_command_handlers
1190         },
1191         COMMAND_REGISTRATION_DONE
1192 };
1193
1194 const struct command_registration esirisc_trace_command_handlers[] = {
1195         {
1196                 .name = "trace",
1197                 .mode = COMMAND_ANY,
1198                 .help = "eSi-Trace command group",
1199                 .usage = "",
1200                 .chain = esirisc_trace_any_command_handlers,
1201         },
1202         COMMAND_REGISTRATION_DONE
1203 };