arch/arm/mach-imx/hab.c

   1 /*
   2  * Copyright (C) 2010-2015 Freescale Semiconductor, Inc.
   3  *
   4  * SPDX-License-Identifier:    GPL-2.0+
   5  */
   6
   7 #include <common.h>
   8 #include <config.h>
   9 #include <fuse.h>
  10 #include <asm/io.h>
  11 #include <asm/system.h>
  12 #include <asm/arch/clock.h>
  13 #include <asm/arch/sys_proto.h>
  14 #include <asm/mach-imx/hab.h>
  15
  16 /* -------- start of HAB API updates ------------*/
  17
  18 #define hab_rvt_report_event_p                                  \
  19 (                                                               \
  20         (is_mx6dqp()) ?                                         \
  21         ((hab_rvt_report_event_t *)HAB_RVT_REPORT_EVENT_NEW) :  \
  22         (is_mx6dq() && (soc_rev() >= CHIP_REV_1_5)) ?           \
  23         ((hab_rvt_report_event_t *)HAB_RVT_REPORT_EVENT_NEW) :  \
  24         (is_mx6sdl() && (soc_rev() >= CHIP_REV_1_2)) ?          \
  25         ((hab_rvt_report_event_t *)HAB_RVT_REPORT_EVENT_NEW) :  \
  26         ((hab_rvt_report_event_t *)HAB_RVT_REPORT_EVENT)        \
  27 )
  28
  29 #define hab_rvt_report_status_p                                 \
  30 (                                                               \
  31         (is_mx6dqp()) ?                                         \
  32         ((hab_rvt_report_status_t *)HAB_RVT_REPORT_STATUS_NEW) :\
  33         (is_mx6dq() && (soc_rev() >= CHIP_REV_1_5)) ?           \
  34         ((hab_rvt_report_status_t *)HAB_RVT_REPORT_STATUS_NEW) :\
  35         (is_mx6sdl() && (soc_rev() >= CHIP_REV_1_2)) ?          \
  36         ((hab_rvt_report_status_t *)HAB_RVT_REPORT_STATUS_NEW) :\
  37         ((hab_rvt_report_status_t *)HAB_RVT_REPORT_STATUS)      \
  38 )
  39
  40 #define hab_rvt_authenticate_image_p                            \
  41 (                                                               \
  42         (is_mx6dqp()) ?                                         \
  43         ((hab_rvt_authenticate_image_t *)HAB_RVT_AUTHENTICATE_IMAGE_NEW) : \
  44         (is_mx6dq() && (soc_rev() >= CHIP_REV_1_5)) ?           \
  45         ((hab_rvt_authenticate_image_t *)HAB_RVT_AUTHENTICATE_IMAGE_NEW) : \
  46         (is_mx6sdl() && (soc_rev() >= CHIP_REV_1_2)) ?          \
  47         ((hab_rvt_authenticate_image_t *)HAB_RVT_AUTHENTICATE_IMAGE_NEW) : \
  48         ((hab_rvt_authenticate_image_t *)HAB_RVT_AUTHENTICATE_IMAGE)    \
  49 )
  50
  51 #define hab_rvt_entry_p                                         \
  52 (                                                               \
  53         (is_mx6dqp()) ?                                         \
  54         ((hab_rvt_entry_t *)HAB_RVT_ENTRY_NEW) :                \
  55         (is_mx6dq() && (soc_rev() >= CHIP_REV_1_5)) ?           \
  56         ((hab_rvt_entry_t *)HAB_RVT_ENTRY_NEW) :                \
  57         (is_mx6sdl() && (soc_rev() >= CHIP_REV_1_2)) ?          \
  58         ((hab_rvt_entry_t *)HAB_RVT_ENTRY_NEW) :                \
  59         ((hab_rvt_entry_t *)HAB_RVT_ENTRY)                      \
  60 )
  61
  62 #define hab_rvt_exit_p                                          \
  63 (                                                               \
  64         (is_mx6dqp()) ?                                         \
  65         ((hab_rvt_exit_t *)HAB_RVT_EXIT_NEW) :                  \
  66         (is_mx6dq() && (soc_rev() >= CHIP_REV_1_5)) ?           \
  67         ((hab_rvt_exit_t *)HAB_RVT_EXIT_NEW) :                  \
  68         (is_mx6sdl() && (soc_rev() >= CHIP_REV_1_2)) ?          \
  69         ((hab_rvt_exit_t *)HAB_RVT_EXIT_NEW) :                  \
  70         ((hab_rvt_exit_t *)HAB_RVT_EXIT)                        \
  71 )
  72
  73 static inline enum hab_status hab_rvt_check_target_new(enum hab_target target,
  74                                                        const void *start,
  75                                                        size_t bytes)
  76 {
  77         return HAB_SUCCESS;
  78 }
  79
  80 #define hab_rvt_check_target_p                                  \
  81 (                                                               \
  82         (is_mx6dqp()) ?                                         \
  83         ((hab_rvt_check_target_t *)hab_rvt_check_target_new) :  \
  84         (is_mx6dq() && (soc_rev() >= CHIP_REV_1_5)) ?           \
  85         ((hab_rvt_check_target_t *)hab_rvt_check_target_new) :  \
  86         (is_mx6sdl() && (soc_rev() >= CHIP_REV_1_2)) ?          \
  87         ((hab_rvt_check_target_t *)hab_rvt_check_target_new) :  \
  88         ((hab_rvt_check_target_t *)HAB_RVT_CHECK_TARGET)        \
  89 )
  90
  91 #define ALIGN_SIZE              0x1000
  92 #define MX6DQ_PU_IROM_MMU_EN_VAR        0x009024a8
  93 #define MX6DLS_PU_IROM_MMU_EN_VAR       0x00901dd0
  94 #define MX6SL_PU_IROM_MMU_EN_VAR        0x00900a18
  95 #define IS_HAB_ENABLED_BIT \
  96         (is_soc_type(MXC_SOC_MX7ULP) ? 0x80000000 :     \
  97          (is_soc_type(MXC_SOC_MX7) ? 0x2000000 : 0x2))
  98
  99 static bool is_hab_enabled(void);
 100
 101 static int ivt_header_error(const char *err_str, struct ivt_header *ivt_hdr)
 102 {
 103         printf("%s magic=0x%x length=0x%02x version=0x%x\n", err_str,
 104                ivt_hdr->magic, ivt_hdr->length, ivt_hdr->version);
 105
 106         return 1;
 107 }
 108
 109 static int verify_ivt_header(struct ivt_header *ivt_hdr)
 110 {
 111         int result = 0;
 112
 113         if (ivt_hdr->magic != IVT_HEADER_MAGIC)
 114                 result = ivt_header_error("bad magic", ivt_hdr);
 115
 116         if (be16_to_cpu(ivt_hdr->length) != IVT_TOTAL_LENGTH)
 117                 result = ivt_header_error("bad length", ivt_hdr);
 118
 119         if (ivt_hdr->version != IVT_HEADER_V1 &&
 120             ivt_hdr->version != IVT_HEADER_V2)
 121                 result = ivt_header_error("bad version", ivt_hdr);
 122
 123         return result;
 124 }
 125
 126 #if !defined(CONFIG_SPL_BUILD)
 127
 128 #define MAX_RECORD_BYTES     (8*1024) /* 4 kbytes */
 129
 130 struct record {
 131         uint8_t  tag;                                           /* Tag */
 132         uint8_t  len[2];                                        /* Length */
 133         uint8_t  par;                                           /* Version */
 134         uint8_t  contents[MAX_RECORD_BYTES];/* Record Data */
 135         bool     any_rec_flag;
 136 };
 137
 138 char *rsn_str[] = {"RSN = HAB_RSN_ANY (0x00)\n",
 139                                    "RSN = HAB_ENG_FAIL (0x30)\n",
 140                                    "RSN = HAB_INV_ADDRESS (0x22)\n",
 141                                    "RSN = HAB_INV_ASSERTION (0x0C)\n",
 142                                    "RSN = HAB_INV_CALL (0x28)\n",
 143                                    "RSN = HAB_INV_CERTIFICATE (0x21)\n",
 144                                    "RSN = HAB_INV_COMMAND (0x06)\n",
 145                                    "RSN = HAB_INV_CSF (0x11)\n",
 146                                    "RSN = HAB_INV_DCD (0x27)\n",
 147                                    "RSN = HAB_INV_INDEX (0x0F)\n",
 148                                    "RSN = HAB_INV_IVT (0x05)\n",
 149                                    "RSN = HAB_INV_KEY (0x1D)\n",
 150                                    "RSN = HAB_INV_RETURN (0x1E)\n",
 151                                    "RSN = HAB_INV_SIGNATURE (0x18)\n",
 152                                    "RSN = HAB_INV_SIZE (0x17)\n",
 153                                    "RSN = HAB_MEM_FAIL (0x2E)\n",
 154                                    "RSN = HAB_OVR_COUNT (0x2B)\n",
 155                                    "RSN = HAB_OVR_STORAGE (0x2D)\n",
 156                                    "RSN = HAB_UNS_ALGORITHM (0x12)\n",
 157                                    "RSN = HAB_UNS_COMMAND (0x03)\n",
 158                                    "RSN = HAB_UNS_ENGINE (0x0A)\n",
 159                                    "RSN = HAB_UNS_ITEM (0x24)\n",
 160                                    "RSN = HAB_UNS_KEY (0x1B)\n",
 161                                    "RSN = HAB_UNS_PROTOCOL (0x14)\n",
 162                                    "RSN = HAB_UNS_STATE (0x09)\n",
 163                                    "RSN = INVALID\n",
 164                                    NULL};
 165
 166 char *sts_str[] = {"STS = HAB_SUCCESS (0xF0)\n",
 167                                    "STS = HAB_FAILURE (0x33)\n",
 168                                    "STS = HAB_WARNING (0x69)\n",
 169                                    "STS = INVALID\n",
 170                                    NULL};
 171
 172 char *eng_str[] = {"ENG = HAB_ENG_ANY (0x00)\n",
 173                                    "ENG = HAB_ENG_SCC (0x03)\n",
 174                                    "ENG = HAB_ENG_RTIC (0x05)\n",
 175                                    "ENG = HAB_ENG_SAHARA (0x06)\n",
 176                                    "ENG = HAB_ENG_CSU (0x0A)\n",
 177                                    "ENG = HAB_ENG_SRTC (0x0C)\n",
 178                                    "ENG = HAB_ENG_DCP (0x1B)\n",
 179                                    "ENG = HAB_ENG_CAAM (0x1D)\n",
 180                                    "ENG = HAB_ENG_SNVS (0x1E)\n",
 181                                    "ENG = HAB_ENG_OCOTP (0x21)\n",
 182                                    "ENG = HAB_ENG_DTCP (0x22)\n",
 183                                    "ENG = HAB_ENG_ROM (0x36)\n",
 184                                    "ENG = HAB_ENG_HDCP (0x24)\n",
 185                                    "ENG = HAB_ENG_RTL (0x77)\n",
 186                                    "ENG = HAB_ENG_SW (0xFF)\n",
 187                                    "ENG = INVALID\n",
 188                                    NULL};
 189
 190 char *ctx_str[] = {"CTX = HAB_CTX_ANY(0x00)\n",
 191                                    "CTX = HAB_CTX_FAB (0xFF)\n",
 192                                    "CTX = HAB_CTX_ENTRY (0xE1)\n",
 193                                    "CTX = HAB_CTX_TARGET (0x33)\n",
 194                                    "CTX = HAB_CTX_AUTHENTICATE (0x0A)\n",
 195                                    "CTX = HAB_CTX_DCD (0xDD)\n",
 196                                    "CTX = HAB_CTX_CSF (0xCF)\n",
 197                                    "CTX = HAB_CTX_COMMAND (0xC0)\n",
 198                                    "CTX = HAB_CTX_AUT_DAT (0xDB)\n",
 199                                    "CTX = HAB_CTX_ASSERT (0xA0)\n",
 200                                    "CTX = HAB_CTX_EXIT (0xEE)\n",
 201                                    "CTX = INVALID\n",
 202                                    NULL};
 203
 204 uint8_t hab_statuses[5] = {
 205         HAB_STS_ANY,
 206         HAB_FAILURE,
 207         HAB_WARNING,
 208         HAB_SUCCESS,
 209         -1
 210 };
 211
 212 uint8_t hab_reasons[26] = {
 213         HAB_RSN_ANY,
 214         HAB_ENG_FAIL,
 215         HAB_INV_ADDRESS,
 216         HAB_INV_ASSERTION,
 217         HAB_INV_CALL,
 218         HAB_INV_CERTIFICATE,
 219         HAB_INV_COMMAND,
 220         HAB_INV_CSF,
 221         HAB_INV_DCD,
 222         HAB_INV_INDEX,
 223         HAB_INV_IVT,
 224         HAB_INV_KEY,
 225         HAB_INV_RETURN,
 226         HAB_INV_SIGNATURE,
 227         HAB_INV_SIZE,
 228         HAB_MEM_FAIL,
 229         HAB_OVR_COUNT,
 230         HAB_OVR_STORAGE,
 231         HAB_UNS_ALGORITHM,
 232         HAB_UNS_COMMAND,
 233         HAB_UNS_ENGINE,
 234         HAB_UNS_ITEM,
 235         HAB_UNS_KEY,
 236         HAB_UNS_PROTOCOL,
 237         HAB_UNS_STATE,
 238         -1
 239 };
 240
 241 uint8_t hab_contexts[12] = {
 242         HAB_CTX_ANY,
 243         HAB_CTX_FAB,
 244         HAB_CTX_ENTRY,
 245         HAB_CTX_TARGET,
 246         HAB_CTX_AUTHENTICATE,
 247         HAB_CTX_DCD,
 248         HAB_CTX_CSF,
 249         HAB_CTX_COMMAND,
 250         HAB_CTX_AUT_DAT,
 251         HAB_CTX_ASSERT,
 252         HAB_CTX_EXIT,
 253         -1
 254 };
 255
 256 uint8_t hab_engines[16] = {
 257         HAB_ENG_ANY,
 258         HAB_ENG_SCC,
 259         HAB_ENG_RTIC,
 260         HAB_ENG_SAHARA,
 261         HAB_ENG_CSU,
 262         HAB_ENG_SRTC,
 263         HAB_ENG_DCP,
 264         HAB_ENG_CAAM,
 265         HAB_ENG_SNVS,
 266         HAB_ENG_OCOTP,
 267         HAB_ENG_DTCP,
 268         HAB_ENG_ROM,
 269         HAB_ENG_HDCP,
 270         HAB_ENG_RTL,
 271         HAB_ENG_SW,
 272         -1
 273 };
 274
 275 static inline uint8_t get_idx(uint8_t *list, uint8_t tgt)
 276 {
 277         uint8_t idx = 0;
 278         uint8_t element = list[idx];
 279         while (element != -1) {
 280                 if (element == tgt)
 281                         return idx;
 282                 element = list[++idx];
 283         }
 284         return -1;
 285 }
 286
 287 void process_event_record(uint8_t *event_data, size_t bytes)
 288 {
 289         struct record *rec = (struct record *)event_data;
 290
 291         printf("\n\n%s", sts_str[get_idx(hab_statuses, rec->contents[0])]);
 292         printf("%s", rsn_str[get_idx(hab_reasons, rec->contents[1])]);
 293         printf("%s", ctx_str[get_idx(hab_contexts, rec->contents[2])]);
 294         printf("%s", eng_str[get_idx(hab_engines, rec->contents[3])]);
 295 }
 296
 297 void display_event(uint8_t *event_data, size_t bytes)
 298 {
 299         uint32_t i;
 300
 301         if (!(event_data && bytes > 0))
 302                 return;
 303
 304         for (i = 0; i < bytes; i++) {
 305                 if (i == 0)
 306                         printf("\t0x%02x", event_data[i]);
 307                 else if ((i % 8) == 0)
 308                         printf("\n\t0x%02x", event_data[i]);
 309                 else
 310                         printf(" 0x%02x", event_data[i]);
 311         }
 312
 313         process_event_record(event_data, bytes);
 314 }
 315
 316 int get_hab_status(void)
 317 {
 318         uint32_t index = 0; /* Loop index */
 319         uint8_t event_data[128]; /* Event data buffer */
 320         size_t bytes = sizeof(event_data); /* Event size in bytes */
 321         enum hab_config config = 0;
 322         enum hab_state state = 0;
 323         hab_rvt_report_event_t *hab_rvt_report_event;
 324         hab_rvt_report_status_t *hab_rvt_report_status;
 325
 326         hab_rvt_report_event = hab_rvt_report_event_p;
 327         hab_rvt_report_status = hab_rvt_report_status_p;
 328
 329         if (is_hab_enabled())
 330                 puts("\nSecure boot enabled\n");
 331         else
 332                 puts("\nSecure boot disabled\n");
 333
 334         /* Check HAB status */
 335         if (hab_rvt_report_status(&config, &state) != HAB_SUCCESS) {
 336                 printf("\nHAB Configuration: 0x%02x, HAB State: 0x%02x\n",
 337                        config, state);
 338
 339                 /* Display HAB Error events */
 340                 while (hab_rvt_report_event(HAB_FAILURE, index, event_data,
 341                                         &bytes) == HAB_SUCCESS) {
 342                         puts("\n");
 343                         printf("--------- HAB Event %d -----------------\n",
 344                                index + 1);
 345                         puts("event data:\n");
 346                         display_event(event_data, bytes);
 347                         puts("\n");
 348                         bytes = sizeof(event_data);
 349                         index++;
 350                 }
 351         }
 352         /* Display message if no HAB events are found */
 353         else {
 354                 printf("\nHAB Configuration: 0x%02x, HAB State: 0x%02x\n",
 355                        config, state);
 356                 puts("No HAB Events Found!\n\n");
 357         }
 358         return 0;
 359 }
 360
 361 int do_hab_status(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 362 {
 363         if ((argc != 1)) {
 364                 cmd_usage(cmdtp);
 365                 return 1;
 366         }
 367
 368         get_hab_status();
 369
 370         return 0;
 371 }
 372
 373 static int do_authenticate_image(cmd_tbl_t *cmdtp, int flag, int argc,
 374                                 char * const argv[])
 375 {
 376         ulong   addr, length, ivt_offset;
 377         int     rcode = 0;
 378
 379         if (argc < 4)
 380                 return CMD_RET_USAGE;
 381
 382         addr = simple_strtoul(argv[1], NULL, 16);
 383         length = simple_strtoul(argv[2], NULL, 16);
 384         ivt_offset = simple_strtoul(argv[3], NULL, 16);
 385
 386         rcode = authenticate_image(addr, length, ivt_offset);
 387         if (rcode == 0)
 388                 rcode = CMD_RET_SUCCESS;
 389         else
 390                 rcode = CMD_RET_FAILURE;
 391
 392         return rcode;
 393 }
 394
 395 U_BOOT_CMD(
 396                 hab_status, CONFIG_SYS_MAXARGS, 1, do_hab_status,
 397                 "display HAB status",
 398                 ""
 399           );
 400
 401 U_BOOT_CMD(
 402                 hab_auth_img, 4, 0, do_authenticate_image,
 403                 "authenticate image via HAB",
 404                 "addr length ivt_offset\n"
 405                 "addr - image hex address\n"
 406                 "length - image hex length\n"
 407                 "ivt_offset - hex offset of IVT in the image"
 408           );
 409
 410
 411 #endif /* !defined(CONFIG_SPL_BUILD) */
 412
 413 static bool is_hab_enabled(void)
 414 {
 415         struct imx_sec_config_fuse_t *fuse =
 416                 (struct imx_sec_config_fuse_t *)&imx_sec_config_fuse;
 417         uint32_t reg;
 418         int ret;
 419
 420         ret = fuse_read(fuse->bank, fuse->word, &reg);
 421         if (ret) {
 422                 puts("\nSecure boot fuse read error\n");
 423                 return ret;
 424         }
 425
 426         return (reg & IS_HAB_ENABLED_BIT) == IS_HAB_ENABLED_BIT;
 427 }
 428
 429 int authenticate_image(uint32_t ddr_start, uint32_t image_size,
 430                        uint32_t ivt_offset)
 431 {
 432         uint32_t load_addr = 0;
 433         size_t bytes;
 434         uint32_t ivt_addr = 0;
 435         int result = 1;
 436         ulong start;
 437         hab_rvt_authenticate_image_t *hab_rvt_authenticate_image;
 438         hab_rvt_entry_t *hab_rvt_entry;
 439         hab_rvt_exit_t *hab_rvt_exit;
 440         hab_rvt_check_target_t *hab_rvt_check_target;
 441         struct ivt *ivt;
 442         struct ivt_header *ivt_hdr;
 443         enum hab_status status;
 444
 445         hab_rvt_authenticate_image = hab_rvt_authenticate_image_p;
 446         hab_rvt_entry = hab_rvt_entry_p;
 447         hab_rvt_exit = hab_rvt_exit_p;
 448         hab_rvt_check_target = hab_rvt_check_target_p;
 449
 450         if (!is_hab_enabled()) {
 451                 puts("hab fuse not enabled\n");
 452                 return result;
 453         }
 454
 455         printf("\nAuthenticate image from DDR location 0x%x...\n",
 456                ddr_start);
 457
 458         hab_caam_clock_enable(1);
 459
 460         /* Calculate IVT address header */
 461         ivt_addr = ddr_start + ivt_offset;
 462         ivt = (struct ivt *)ivt_addr;
 463         ivt_hdr = &ivt->hdr;
 464
 465         /* Verify IVT header bugging out on error */
 466         if (verify_ivt_header(ivt_hdr))
 467                 goto hab_caam_clock_disable;
 468
 469         /* Verify IVT body */
 470         if (ivt->self != ivt_addr) {
 471                 printf("ivt->self 0x%08x pointer is 0x%08x\n",
 472                        ivt->self, ivt_addr);
 473                 goto hab_caam_clock_disable;
 474         }
 475
 476         start = ddr_start;
 477         bytes = image_size;
 478
 479         if (hab_rvt_entry() != HAB_SUCCESS) {
 480                 puts("hab entry function fail\n");
 481                 goto hab_caam_clock_disable;
 482         }
 483
 484         status = hab_rvt_check_target(HAB_TGT_MEMORY, (void *)ddr_start, bytes);
 485         if (status != HAB_SUCCESS) {
 486                 printf("HAB check target 0x%08x-0x%08x fail\n",
 487                        ddr_start, ddr_start + bytes);
 488                 goto hab_caam_clock_disable;
 489         }
 490 #ifdef DEBUG
 491         printf("\nivt_offset = 0x%x, ivt addr = 0x%x\n", ivt_offset, ivt_addr);
 492         printf("ivt entry = 0x%08x, dcd = 0x%08x, csf = 0x%08x\n", ivt->entry,
 493                ivt->dcd, ivt->csf);
 494         puts("Dumping IVT\n");
 495         print_buffer(ivt_addr, (void *)(ivt_addr), 4, 0x8, 0);
 496
 497         puts("Dumping CSF Header\n");
 498         print_buffer(ivt->csf, (void *)(ivt->csf), 4, 0x10, 0);
 499
 500 #if  !defined(CONFIG_SPL_BUILD)
 501         get_hab_status();
 502 #endif
 503
 504         puts("\nCalling authenticate_image in ROM\n");
 505         printf("\tivt_offset = 0x%x\n", ivt_offset);
 506         printf("\tstart = 0x%08lx\n", start);
 507         printf("\tbytes = 0x%x\n", bytes);
 508 #endif
 509         /*
 510          * If the MMU is enabled, we have to notify the ROM
 511          * code, or it won't flush the caches when needed.
 512          * This is done, by setting the "pu_irom_mmu_enabled"
 513          * word to 1. You can find its address by looking in
 514          * the ROM map. This is critical for
 515          * authenticate_image(). If MMU is enabled, without
 516          * setting this bit, authentication will fail and may
 517          * crash.
 518          */
 519         /* Check MMU enabled */
 520         if (is_soc_type(MXC_SOC_MX6) && get_cr() & CR_M) {
 521                 if (is_mx6dq()) {
 522                         /*
 523                          * This won't work on Rev 1.0.0 of
 524                          * i.MX6Q/D, since their ROM doesn't
 525                          * do cache flushes. don't think any
 526                          * exist, so we ignore them.
 527                          */
 528                         if (!is_mx6dqp())
 529                                 writel(1, MX6DQ_PU_IROM_MMU_EN_VAR);
 530                 } else if (is_mx6sdl()) {
 531                         writel(1, MX6DLS_PU_IROM_MMU_EN_VAR);
 532                 } else if (is_mx6sl()) {
 533                         writel(1, MX6SL_PU_IROM_MMU_EN_VAR);
 534                 }
 535         }
 536
 537         load_addr = (uint32_t)hab_rvt_authenticate_image(
 538                         HAB_CID_UBOOT,
 539                         ivt_offset, (void **)&start,
 540                         (size_t *)&bytes, NULL);
 541         if (hab_rvt_exit() != HAB_SUCCESS) {
 542                 puts("hab exit function fail\n");
 543                 load_addr = 0;
 544         }
 545
 546 hab_caam_clock_disable:
 547         hab_caam_clock_enable(0);
 548
 549 #if !defined(CONFIG_SPL_BUILD)
 550         get_hab_status();
 551 #endif
 552         if (load_addr != 0)
 553                 result = 0;
 554
 555         return result;
 556 }