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