arch/arm/mach-imx/hab.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * Copyright (C) 2010-2015 Freescale Semiconductor, Inc.
   4  */
   5
   6 #include <common.h>
   7 #include <command.h>
   8 #include <config.h>
   9 #include <fuse.h>
  10 #include <mapmem.h>
  11 #include <image.h>
  12 #include <asm/io.h>
  13 #include <asm/system.h>
  14 #include <asm/arch/clock.h>
  15 #include <asm/arch/sys_proto.h>
  16 #include <asm/mach-imx/hab.h>
  17
  18 #define ALIGN_SIZE              0x1000
  19 #define MX6DQ_PU_IROM_MMU_EN_VAR        0x009024a8
  20 #define MX6DLS_PU_IROM_MMU_EN_VAR       0x00901dd0
  21 #define MX6SL_PU_IROM_MMU_EN_VAR        0x00901c60
  22 #define IS_HAB_ENABLED_BIT \
  23         (is_soc_type(MXC_SOC_MX7ULP) ? 0x80000000 :     \
  24          (is_soc_type(MXC_SOC_MX7) ? 0x2000000 : 0x2))
  25
  26 static int ivt_header_error(const char *err_str, struct ivt_header *ivt_hdr)
  27 {
  28         printf("%s magic=0x%x length=0x%02x version=0x%x\n", err_str,
  29                ivt_hdr->magic, ivt_hdr->length, ivt_hdr->version);
  30
  31         return 1;
  32 }
  33
  34 static int verify_ivt_header(struct ivt_header *ivt_hdr)
  35 {
  36         int result = 0;
  37
  38         if (ivt_hdr->magic != IVT_HEADER_MAGIC)
  39                 result = ivt_header_error("bad magic", ivt_hdr);
  40
  41         if (be16_to_cpu(ivt_hdr->length) != IVT_TOTAL_LENGTH)
  42                 result = ivt_header_error("bad length", ivt_hdr);
  43
  44         if (ivt_hdr->version != IVT_HEADER_V1 &&
  45             ivt_hdr->version != IVT_HEADER_V2)
  46                 result = ivt_header_error("bad version", ivt_hdr);
  47
  48         return result;
  49 }
  50
  51 #if !defined(CONFIG_SPL_BUILD)
  52
  53 #define MAX_RECORD_BYTES     (8*1024) /* 4 kbytes */
  54
  55 struct record {
  56         uint8_t  tag;                                           /* Tag */
  57         uint8_t  len[2];                                        /* Length */
  58         uint8_t  par;                                           /* Version */
  59         uint8_t  contents[MAX_RECORD_BYTES];/* Record Data */
  60         bool     any_rec_flag;
  61 };
  62
  63 static char *rsn_str[] = {
  64                           "RSN = HAB_RSN_ANY (0x00)\n",
  65                           "RSN = HAB_ENG_FAIL (0x30)\n",
  66                           "RSN = HAB_INV_ADDRESS (0x22)\n",
  67                           "RSN = HAB_INV_ASSERTION (0x0C)\n",
  68                           "RSN = HAB_INV_CALL (0x28)\n",
  69                           "RSN = HAB_INV_CERTIFICATE (0x21)\n",
  70                           "RSN = HAB_INV_COMMAND (0x06)\n",
  71                           "RSN = HAB_INV_CSF (0x11)\n",
  72                           "RSN = HAB_INV_DCD (0x27)\n",
  73                           "RSN = HAB_INV_INDEX (0x0F)\n",
  74                           "RSN = HAB_INV_IVT (0x05)\n",
  75                           "RSN = HAB_INV_KEY (0x1D)\n",
  76                           "RSN = HAB_INV_RETURN (0x1E)\n",
  77                           "RSN = HAB_INV_SIGNATURE (0x18)\n",
  78                           "RSN = HAB_INV_SIZE (0x17)\n",
  79                           "RSN = HAB_MEM_FAIL (0x2E)\n",
  80                           "RSN = HAB_OVR_COUNT (0x2B)\n",
  81                           "RSN = HAB_OVR_STORAGE (0x2D)\n",
  82                           "RSN = HAB_UNS_ALGORITHM (0x12)\n",
  83                           "RSN = HAB_UNS_COMMAND (0x03)\n",
  84                           "RSN = HAB_UNS_ENGINE (0x0A)\n",
  85                           "RSN = HAB_UNS_ITEM (0x24)\n",
  86                           "RSN = HAB_UNS_KEY (0x1B)\n",
  87                           "RSN = HAB_UNS_PROTOCOL (0x14)\n",
  88                           "RSN = HAB_UNS_STATE (0x09)\n",
  89                           "RSN = INVALID\n",
  90                           NULL
  91 };
  92
  93 static char *sts_str[] = {
  94                           "STS = HAB_SUCCESS (0xF0)\n",
  95                           "STS = HAB_FAILURE (0x33)\n",
  96                           "STS = HAB_WARNING (0x69)\n",
  97                           "STS = INVALID\n",
  98                           NULL
  99 };
 100
 101 static char *eng_str[] = {
 102                           "ENG = HAB_ENG_ANY (0x00)\n",
 103                           "ENG = HAB_ENG_SCC (0x03)\n",
 104                           "ENG = HAB_ENG_RTIC (0x05)\n",
 105                           "ENG = HAB_ENG_SAHARA (0x06)\n",
 106                           "ENG = HAB_ENG_CSU (0x0A)\n",
 107                           "ENG = HAB_ENG_SRTC (0x0C)\n",
 108                           "ENG = HAB_ENG_DCP (0x1B)\n",
 109                           "ENG = HAB_ENG_CAAM (0x1D)\n",
 110                           "ENG = HAB_ENG_SNVS (0x1E)\n",
 111                           "ENG = HAB_ENG_OCOTP (0x21)\n",
 112                           "ENG = HAB_ENG_DTCP (0x22)\n",
 113                           "ENG = HAB_ENG_ROM (0x36)\n",
 114                           "ENG = HAB_ENG_HDCP (0x24)\n",
 115                           "ENG = HAB_ENG_RTL (0x77)\n",
 116                           "ENG = HAB_ENG_SW (0xFF)\n",
 117                           "ENG = INVALID\n",
 118                           NULL
 119 };
 120
 121 static char *ctx_str[] = {
 122                           "CTX = HAB_CTX_ANY(0x00)\n",
 123                           "CTX = HAB_CTX_FAB (0xFF)\n",
 124                           "CTX = HAB_CTX_ENTRY (0xE1)\n",
 125                           "CTX = HAB_CTX_TARGET (0x33)\n",
 126                           "CTX = HAB_CTX_AUTHENTICATE (0x0A)\n",
 127                           "CTX = HAB_CTX_DCD (0xDD)\n",
 128                           "CTX = HAB_CTX_CSF (0xCF)\n",
 129                           "CTX = HAB_CTX_COMMAND (0xC0)\n",
 130                           "CTX = HAB_CTX_AUT_DAT (0xDB)\n",
 131                           "CTX = HAB_CTX_ASSERT (0xA0)\n",
 132                           "CTX = HAB_CTX_EXIT (0xEE)\n",
 133                           "CTX = INVALID\n",
 134                           NULL
 135 };
 136
 137 static uint8_t hab_statuses[5] = {
 138         HAB_STS_ANY,
 139         HAB_FAILURE,
 140         HAB_WARNING,
 141         HAB_SUCCESS,
 142         -1
 143 };
 144
 145 static uint8_t hab_reasons[26] = {
 146         HAB_RSN_ANY,
 147         HAB_ENG_FAIL,
 148         HAB_INV_ADDRESS,
 149         HAB_INV_ASSERTION,
 150         HAB_INV_CALL,
 151         HAB_INV_CERTIFICATE,
 152         HAB_INV_COMMAND,
 153         HAB_INV_CSF,
 154         HAB_INV_DCD,
 155         HAB_INV_INDEX,
 156         HAB_INV_IVT,
 157         HAB_INV_KEY,
 158         HAB_INV_RETURN,
 159         HAB_INV_SIGNATURE,
 160         HAB_INV_SIZE,
 161         HAB_MEM_FAIL,
 162         HAB_OVR_COUNT,
 163         HAB_OVR_STORAGE,
 164         HAB_UNS_ALGORITHM,
 165         HAB_UNS_COMMAND,
 166         HAB_UNS_ENGINE,
 167         HAB_UNS_ITEM,
 168         HAB_UNS_KEY,
 169         HAB_UNS_PROTOCOL,
 170         HAB_UNS_STATE,
 171         -1
 172 };
 173
 174 static uint8_t hab_contexts[12] = {
 175         HAB_CTX_ANY,
 176         HAB_CTX_FAB,
 177         HAB_CTX_ENTRY,
 178         HAB_CTX_TARGET,
 179         HAB_CTX_AUTHENTICATE,
 180         HAB_CTX_DCD,
 181         HAB_CTX_CSF,
 182         HAB_CTX_COMMAND,
 183         HAB_CTX_AUT_DAT,
 184         HAB_CTX_ASSERT,
 185         HAB_CTX_EXIT,
 186         -1
 187 };
 188
 189 static uint8_t hab_engines[16] = {
 190         HAB_ENG_ANY,
 191         HAB_ENG_SCC,
 192         HAB_ENG_RTIC,
 193         HAB_ENG_SAHARA,
 194         HAB_ENG_CSU,
 195         HAB_ENG_SRTC,
 196         HAB_ENG_DCP,
 197         HAB_ENG_CAAM,
 198         HAB_ENG_SNVS,
 199         HAB_ENG_OCOTP,
 200         HAB_ENG_DTCP,
 201         HAB_ENG_ROM,
 202         HAB_ENG_HDCP,
 203         HAB_ENG_RTL,
 204         HAB_ENG_SW,
 205         -1
 206 };
 207
 208 static inline uint8_t get_idx(uint8_t *list, uint8_t tgt)
 209 {
 210         uint8_t idx = 0;
 211         uint8_t element = list[idx];
 212         while (element != -1) {
 213                 if (element == tgt)
 214                         return idx;
 215                 element = list[++idx];
 216         }
 217         return -1;
 218 }
 219
 220 static void process_event_record(uint8_t *event_data, size_t bytes)
 221 {
 222         struct record *rec = (struct record *)event_data;
 223
 224         printf("\n\n%s", sts_str[get_idx(hab_statuses, rec->contents[0])]);
 225         printf("%s", rsn_str[get_idx(hab_reasons, rec->contents[1])]);
 226         printf("%s", ctx_str[get_idx(hab_contexts, rec->contents[2])]);
 227         printf("%s", eng_str[get_idx(hab_engines, rec->contents[3])]);
 228 }
 229
 230 static void display_event(uint8_t *event_data, size_t bytes)
 231 {
 232         uint32_t i;
 233
 234         if (!(event_data && bytes > 0))
 235                 return;
 236
 237         for (i = 0; i < bytes; i++) {
 238                 if (i == 0)
 239                         printf("\t0x%02x", event_data[i]);
 240                 else if ((i % 8) == 0)
 241                         printf("\n\t0x%02x", event_data[i]);
 242                 else
 243                         printf(" 0x%02x", event_data[i]);
 244         }
 245
 246         process_event_record(event_data, bytes);
 247 }
 248
 249 static int get_hab_status(void)
 250 {
 251         uint32_t index = 0; /* Loop index */
 252         uint8_t event_data[128]; /* Event data buffer */
 253         size_t bytes = sizeof(event_data); /* Event size in bytes */
 254         enum hab_config config = 0;
 255         enum hab_state state = 0;
 256         hab_rvt_report_event_t *hab_rvt_report_event;
 257         hab_rvt_report_status_t *hab_rvt_report_status;
 258
 259         hab_rvt_report_event = (hab_rvt_report_event_t *)HAB_RVT_REPORT_EVENT;
 260         hab_rvt_report_status =
 261                         (hab_rvt_report_status_t *)HAB_RVT_REPORT_STATUS;
 262
 263         if (imx_hab_is_enabled())
 264                 puts("\nSecure boot enabled\n");
 265         else
 266                 puts("\nSecure boot disabled\n");
 267
 268         /* Check HAB status */
 269         if (hab_rvt_report_status(&config, &state) != HAB_SUCCESS) {
 270                 printf("\nHAB Configuration: 0x%02x, HAB State: 0x%02x\n",
 271                        config, state);
 272
 273                 /* Display HAB Error events */
 274                 while (hab_rvt_report_event(HAB_FAILURE, index, event_data,
 275                                         &bytes) == HAB_SUCCESS) {
 276                         puts("\n");
 277                         printf("--------- HAB Event %d -----------------\n",
 278                                index + 1);
 279                         puts("event data:\n");
 280                         display_event(event_data, bytes);
 281                         puts("\n");
 282                         bytes = sizeof(event_data);
 283                         index++;
 284                 }
 285         }
 286         /* Display message if no HAB events are found */
 287         else {
 288                 printf("\nHAB Configuration: 0x%02x, HAB State: 0x%02x\n",
 289                        config, state);
 290                 puts("No HAB Events Found!\n\n");
 291         }
 292         return 0;
 293 }
 294
 295 static int do_hab_status(struct cmd_tbl *cmdtp, int flag, int argc,
 296                          char *const argv[])
 297 {
 298         if ((argc != 1)) {
 299                 cmd_usage(cmdtp);
 300                 return 1;
 301         }
 302
 303         get_hab_status();
 304
 305         return 0;
 306 }
 307
 308 static ulong get_image_ivt_offset(ulong img_addr)
 309 {
 310         const void *buf;
 311
 312         buf = map_sysmem(img_addr, 0);
 313         switch (genimg_get_format(buf)) {
 314 #if CONFIG_IS_ENABLED(LEGACY_IMAGE_FORMAT)
 315         case IMAGE_FORMAT_LEGACY:
 316                 return (image_get_image_size((image_header_t *)img_addr)
 317                         + 0x1000 - 1)  & ~(0x1000 - 1);
 318 #endif
 319 #if IMAGE_ENABLE_FIT
 320         case IMAGE_FORMAT_FIT:
 321                 return (fit_get_size(buf) + 0x1000 - 1)  & ~(0x1000 - 1);
 322 #endif
 323         default:
 324                 return 0;
 325         }
 326 }
 327
 328 static int do_authenticate_image(struct cmd_tbl *cmdtp, int flag, int argc,
 329                                  char *const argv[])
 330 {
 331         ulong   addr, length, ivt_offset;
 332         int     rcode = 0;
 333
 334         if (argc < 3)
 335                 return CMD_RET_USAGE;
 336
 337         addr = simple_strtoul(argv[1], NULL, 16);
 338         length = simple_strtoul(argv[2], NULL, 16);
 339         if (argc == 3)
 340                 ivt_offset = get_image_ivt_offset(addr);
 341         else
 342                 ivt_offset = simple_strtoul(argv[3], NULL, 16);
 343
 344         rcode = imx_hab_authenticate_image(addr, length, ivt_offset);
 345         if (rcode == 0)
 346                 rcode = CMD_RET_SUCCESS;
 347         else
 348                 rcode = CMD_RET_FAILURE;
 349
 350         return rcode;
 351 }
 352
 353 static int do_hab_failsafe(struct cmd_tbl *cmdtp, int flag, int argc,
 354                            char *const argv[])
 355 {
 356         hab_rvt_failsafe_t *hab_rvt_failsafe;
 357
 358         if (argc != 1) {
 359                 cmd_usage(cmdtp);
 360                 return 1;
 361         }
 362
 363         hab_rvt_failsafe = (hab_rvt_failsafe_t *)HAB_RVT_FAILSAFE;
 364         hab_rvt_failsafe();
 365
 366         return 0;
 367 }
 368
 369 static int do_hab_version(struct cmd_tbl *cmdtp, int flag, int argc,
 370                           char *const argv[])
 371 {
 372         struct hab_hdr *hdr = (struct hab_hdr *)HAB_RVT_BASE;
 373
 374         if (hdr->tag != HAB_TAG_RVT) {
 375                 printf("Unexpected header tag: %x\n", hdr->tag);
 376                 return CMD_RET_FAILURE;
 377         }
 378
 379         printf("HAB version: %d.%d\n", hdr->par >> 4, hdr->par & 0xf);
 380
 381         return 0;
 382 }
 383
 384 static int do_authenticate_image_or_failover(struct cmd_tbl *cmdtp, int flag,
 385                                              int argc, char *const argv[])
 386 {
 387         int ret = CMD_RET_FAILURE;
 388
 389         if (argc != 4) {
 390                 ret = CMD_RET_USAGE;
 391                 goto error;
 392         }
 393
 394         if (!imx_hab_is_enabled()) {
 395                 printf("error: secure boot disabled\n");
 396                 goto error;
 397         }
 398
 399         if (do_authenticate_image(NULL, flag, argc, argv) != CMD_RET_SUCCESS) {
 400                 fprintf(stderr, "authentication fail -> %s %s %s %s\n",
 401                         argv[0], argv[1], argv[2], argv[3]);
 402                 do_hab_failsafe(0, 0, 1, NULL);
 403         };
 404         ret = CMD_RET_SUCCESS;
 405 error:
 406         return ret;
 407 }
 408
 409 U_BOOT_CMD(
 410                 hab_status, CONFIG_SYS_MAXARGS, 1, do_hab_status,
 411                 "display HAB status",
 412                 ""
 413           );
 414
 415 U_BOOT_CMD(
 416                 hab_auth_img, 4, 0, do_authenticate_image,
 417                 "authenticate image via HAB",
 418                 "addr length ivt_offset\n"
 419                 "addr - image hex address\n"
 420                 "length - image hex length\n"
 421                 "ivt_offset - hex offset of IVT in the image"
 422           );
 423
 424 U_BOOT_CMD(
 425                 hab_failsafe, CONFIG_SYS_MAXARGS, 1, do_hab_failsafe,
 426                 "run BootROM failsafe routine",
 427                 ""
 428           );
 429
 430 U_BOOT_CMD(
 431                 hab_auth_img_or_fail, 4, 0,
 432                 do_authenticate_image_or_failover,
 433                 "authenticate image via HAB on failure drop to USB BootROM mode",
 434                 "addr length ivt_offset\n"
 435                 "addr - image hex address\n"
 436                 "length - image hex length\n"
 437                 "ivt_offset - hex offset of IVT in the image"
 438           );
 439
 440 U_BOOT_CMD(
 441                 hab_version, 1, 0, do_hab_version,
 442                 "print HAB major/minor version",
 443                 ""
 444           );
 445
 446 #endif /* !defined(CONFIG_SPL_BUILD) */
 447
 448 /* Get CSF Header length */
 449 static int get_hab_hdr_len(struct hab_hdr *hdr)
 450 {
 451         return (size_t)((hdr->len[0] << 8) + (hdr->len[1]));
 452 }
 453
 454 /* Check whether addr lies between start and
 455  * end and is within the length of the image
 456  */
 457 static int chk_bounds(u8 *addr, size_t bytes, u8 *start, u8 *end)
 458 {
 459         size_t csf_size = (size_t)((end + 1) - addr);
 460
 461         return (addr && (addr >= start) && (addr <= end) &&
 462                 (csf_size >= bytes));
 463 }
 464
 465 /* Get Length of each command in CSF */
 466 static int get_csf_cmd_hdr_len(u8 *csf_hdr)
 467 {
 468         if (*csf_hdr == HAB_CMD_HDR)
 469                 return sizeof(struct hab_hdr);
 470
 471         return get_hab_hdr_len((struct hab_hdr *)csf_hdr);
 472 }
 473
 474 /* Check if CSF is valid */
 475 static bool csf_is_valid(struct ivt *ivt, ulong start_addr, size_t bytes)
 476 {
 477         u8 *start = (u8 *)start_addr;
 478         u8 *csf_hdr;
 479         u8 *end;
 480
 481         size_t csf_hdr_len;
 482         size_t cmd_hdr_len;
 483         size_t offset = 0;
 484
 485         if (bytes != 0)
 486                 end = start + bytes - 1;
 487         else
 488                 end = start;
 489
 490         /* Verify if CSF pointer content is zero */
 491         if (!ivt->csf) {
 492                 puts("Error: CSF pointer is NULL\n");
 493                 return false;
 494         }
 495
 496         csf_hdr = (u8 *)ivt->csf;
 497
 498         /* Verify if CSF Header exist */
 499         if (*csf_hdr != HAB_CMD_HDR) {
 500                 puts("Error: CSF header command not found\n");
 501                 return false;
 502         }
 503
 504         csf_hdr_len = get_hab_hdr_len((struct hab_hdr *)csf_hdr);
 505
 506         /* Check if the CSF lies within the image bounds */
 507         if (!chk_bounds(csf_hdr, csf_hdr_len, start, end)) {
 508                 puts("Error: CSF lies outside the image bounds\n");
 509                 return false;
 510         }
 511
 512         do {
 513                 struct hab_hdr *cmd;
 514
 515                 cmd = (struct hab_hdr *)&csf_hdr[offset];
 516
 517                 switch (cmd->tag) {
 518                 case (HAB_CMD_WRT_DAT):
 519                         puts("Error: Deprecated write command found\n");
 520                         return false;
 521                 case (HAB_CMD_CHK_DAT):
 522                         puts("Error: Deprecated check command found\n");
 523                         return false;
 524                 case (HAB_CMD_SET):
 525                         if (cmd->par == HAB_PAR_MID) {
 526                                 puts("Error: Deprecated Set MID command found\n");
 527                                 return false;
 528                         }
 529                 default:
 530                         break;
 531                 }
 532
 533                 cmd_hdr_len = get_csf_cmd_hdr_len(&csf_hdr[offset]);
 534                 if (!cmd_hdr_len) {
 535                         puts("Error: Invalid command length\n");
 536                         return false;
 537                 }
 538                 offset += cmd_hdr_len;
 539
 540         } while (offset < csf_hdr_len);
 541
 542         return true;
 543 }
 544
 545 bool imx_hab_is_enabled(void)
 546 {
 547         struct imx_sec_config_fuse_t *fuse =
 548                 (struct imx_sec_config_fuse_t *)&imx_sec_config_fuse;
 549         uint32_t reg;
 550         int ret;
 551
 552         ret = fuse_read(fuse->bank, fuse->word, &reg);
 553         if (ret) {
 554                 puts("\nSecure boot fuse read error\n");
 555                 return ret;
 556         }
 557
 558         return (reg & IS_HAB_ENABLED_BIT) == IS_HAB_ENABLED_BIT;
 559 }
 560
 561 int imx_hab_authenticate_image(uint32_t ddr_start, uint32_t image_size,
 562                                uint32_t ivt_offset)
 563 {
 564         uint32_t load_addr = 0;
 565         size_t bytes;
 566         uint32_t ivt_addr = 0;
 567         int result = 1;
 568         ulong start;
 569         hab_rvt_authenticate_image_t *hab_rvt_authenticate_image;
 570         hab_rvt_entry_t *hab_rvt_entry;
 571         hab_rvt_exit_t *hab_rvt_exit;
 572         hab_rvt_check_target_t *hab_rvt_check_target;
 573         struct ivt *ivt;
 574         struct ivt_header *ivt_hdr;
 575         enum hab_status status;
 576
 577         hab_rvt_authenticate_image =
 578                 (hab_rvt_authenticate_image_t *)HAB_RVT_AUTHENTICATE_IMAGE;
 579         hab_rvt_entry = (hab_rvt_entry_t *)HAB_RVT_ENTRY;
 580         hab_rvt_exit = (hab_rvt_exit_t *)HAB_RVT_EXIT;
 581         hab_rvt_check_target = (hab_rvt_check_target_t *)HAB_RVT_CHECK_TARGET;
 582
 583         if (!imx_hab_is_enabled()) {
 584                 puts("hab fuse not enabled\n");
 585                 return 0;
 586         }
 587
 588         printf("\nAuthenticate image from DDR location 0x%x...\n",
 589                ddr_start);
 590
 591         hab_caam_clock_enable(1);
 592
 593         /* Calculate IVT address header */
 594         ivt_addr = ddr_start + ivt_offset;
 595         ivt = (struct ivt *)ivt_addr;
 596         ivt_hdr = &ivt->hdr;
 597
 598         /* Verify IVT header bugging out on error */
 599         if (verify_ivt_header(ivt_hdr))
 600                 goto hab_authentication_exit;
 601
 602         /* Verify IVT body */
 603         if (ivt->self != ivt_addr) {
 604                 printf("ivt->self 0x%08x pointer is 0x%08x\n",
 605                        ivt->self, ivt_addr);
 606                 goto hab_authentication_exit;
 607         }
 608
 609         /* Verify if IVT DCD pointer is NULL */
 610         if (ivt->dcd) {
 611                 puts("Error: DCD pointer must be NULL\n");
 612                 goto hab_authentication_exit;
 613         }
 614
 615         start = ddr_start;
 616         bytes = image_size;
 617
 618         /* Verify CSF */
 619         if (!csf_is_valid(ivt, start, bytes))
 620                 goto hab_authentication_exit;
 621
 622         if (hab_rvt_entry() != HAB_SUCCESS) {
 623                 puts("hab entry function fail\n");
 624                 goto hab_exit_failure_print_status;
 625         }
 626
 627         status = hab_rvt_check_target(HAB_TGT_MEMORY, (void *)ddr_start, bytes);
 628         if (status != HAB_SUCCESS) {
 629                 printf("HAB check target 0x%08x-0x%08x fail\n",
 630                        ddr_start, ddr_start + bytes);
 631                 goto hab_exit_failure_print_status;
 632         }
 633 #ifdef DEBUG
 634         printf("\nivt_offset = 0x%x, ivt addr = 0x%x\n", ivt_offset, ivt_addr);
 635         printf("ivt entry = 0x%08x, dcd = 0x%08x, csf = 0x%08x\n", ivt->entry,
 636                ivt->dcd, ivt->csf);
 637         puts("Dumping IVT\n");
 638         print_buffer(ivt_addr, (void *)(ivt_addr), 4, 0x8, 0);
 639
 640         puts("Dumping CSF Header\n");
 641         print_buffer(ivt->csf, (void *)(ivt->csf), 4, 0x10, 0);
 642
 643 #if  !defined(CONFIG_SPL_BUILD)
 644         get_hab_status();
 645 #endif
 646
 647         puts("\nCalling authenticate_image in ROM\n");
 648         printf("\tivt_offset = 0x%x\n", ivt_offset);
 649         printf("\tstart = 0x%08lx\n", start);
 650         printf("\tbytes = 0x%x\n", bytes);
 651 #endif
 652         /*
 653          * If the MMU is enabled, we have to notify the ROM
 654          * code, or it won't flush the caches when needed.
 655          * This is done, by setting the "pu_irom_mmu_enabled"
 656          * word to 1. You can find its address by looking in
 657          * the ROM map. This is critical for
 658          * authenticate_image(). If MMU is enabled, without
 659          * setting this bit, authentication will fail and may
 660          * crash.
 661          */
 662         /* Check MMU enabled */
 663         if (is_soc_type(MXC_SOC_MX6) && get_cr() & CR_M) {
 664                 if (is_mx6dq()) {
 665                         /*
 666                          * This won't work on Rev 1.0.0 of
 667                          * i.MX6Q/D, since their ROM doesn't
 668                          * do cache flushes. don't think any
 669                          * exist, so we ignore them.
 670                          */
 671                         if (!is_mx6dqp())
 672                                 writel(1, MX6DQ_PU_IROM_MMU_EN_VAR);
 673                 } else if (is_mx6sdl()) {
 674                         writel(1, MX6DLS_PU_IROM_MMU_EN_VAR);
 675                 } else if (is_mx6sl()) {
 676                         writel(1, MX6SL_PU_IROM_MMU_EN_VAR);
 677                 }
 678         }
 679
 680         load_addr = (uint32_t)hab_rvt_authenticate_image(
 681                         HAB_CID_UBOOT,
 682                         ivt_offset, (void **)&start,
 683                         (size_t *)&bytes, NULL);
 684         if (hab_rvt_exit() != HAB_SUCCESS) {
 685                 puts("hab exit function fail\n");
 686                 load_addr = 0;
 687         }
 688
 689 hab_exit_failure_print_status:
 690 #if !defined(CONFIG_SPL_BUILD)
 691         get_hab_status();
 692 #endif
 693
 694 hab_authentication_exit:
 695
 696         if (load_addr != 0)
 697                 result = 0;
 698
 699         return result;
 700 }