git.sur5r.net Git - u-boot/blob - arch/arm/imx-common/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/imx-common/hab.h>
  15
  16 /* -------- start of HAB API updates ------------*/
  17
  18 #define hab_rvt_report_event_p                                  \
  19 (                                                               \
  20         (is_mx6dq() && (soc_rev() >= CHIP_REV_1_5)) ?           \
  21         ((hab_rvt_report_event_t *)HAB_RVT_REPORT_EVENT_NEW) :  \
  22         (is_mx6sdl() && (soc_rev() >= CHIP_REV_1_2)) ?          \
  23         ((hab_rvt_report_event_t *)HAB_RVT_REPORT_EVENT_NEW) :  \
  24         ((hab_rvt_report_event_t *)HAB_RVT_REPORT_EVENT)        \
  25 )
  26
  27 #define hab_rvt_report_status_p                                 \
  28 (                                                               \
  29         (is_mx6dq() && (soc_rev() >= CHIP_REV_1_5)) ?           \
  30         ((hab_rvt_report_status_t *)HAB_RVT_REPORT_STATUS_NEW) :\
  31         (is_mx6sdl() && (soc_rev() >= CHIP_REV_1_2)) ?          \
  32         ((hab_rvt_report_status_t *)HAB_RVT_REPORT_STATUS_NEW) :\
  33         ((hab_rvt_report_status_t *)HAB_RVT_REPORT_STATUS)      \
  34 )
  35
  36 #define hab_rvt_authenticate_image_p                            \
  37 (                                                               \
  38         (is_mx6dq() && (soc_rev() >= CHIP_REV_1_5)) ?           \
  39         ((hab_rvt_authenticate_image_t *)HAB_RVT_AUTHENTICATE_IMAGE_NEW) : \
  40         (is_mx6sdl() && (soc_rev() >= CHIP_REV_1_2)) ?          \
  41         ((hab_rvt_authenticate_image_t *)HAB_RVT_AUTHENTICATE_IMAGE_NEW) : \
  42         ((hab_rvt_authenticate_image_t *)HAB_RVT_AUTHENTICATE_IMAGE)    \
  43 )
  44
  45 #define hab_rvt_entry_p                                         \
  46 (                                                               \
  47         (is_mx6dq() && (soc_rev() >= CHIP_REV_1_5)) ?           \
  48         ((hab_rvt_entry_t *)HAB_RVT_ENTRY_NEW) :                \
  49         (is_mx6sdl() && (soc_rev() >= CHIP_REV_1_2)) ?          \
  50         ((hab_rvt_entry_t *)HAB_RVT_ENTRY_NEW) :                \
  51         ((hab_rvt_entry_t *)HAB_RVT_ENTRY)                      \
  52 )
  53
  54 #define hab_rvt_exit_p                                          \
  55 (                                                               \
  56         (is_mx6dq() && (soc_rev() >= CHIP_REV_1_5)) ?           \
  57         ((hab_rvt_exit_t *)HAB_RVT_EXIT_NEW) :                  \
  58         (is_mx6sdl() && (soc_rev() >= CHIP_REV_1_2)) ?          \
  59         ((hab_rvt_exit_t *)HAB_RVT_EXIT_NEW) :                  \
  60         ((hab_rvt_exit_t *)HAB_RVT_EXIT)                        \
  61 )
  62
  63 #define IVT_SIZE                0x20
  64 #define ALIGN_SIZE              0x1000
  65 #define CSF_PAD_SIZE            0x2000
  66 #define MX6DQ_PU_IROM_MMU_EN_VAR        0x009024a8
  67 #define MX6DLS_PU_IROM_MMU_EN_VAR       0x00901dd0
  68 #define MX6SL_PU_IROM_MMU_EN_VAR        0x00900a18
  69 #define IS_HAB_ENABLED_BIT \
  70         (is_soc_type(MXC_SOC_MX7) ? 0x2000000 : 0x2)
  71
  72 /*
  73  * +------------+  0x0 (DDR_UIMAGE_START) -
  74  * |   Header   |                          |
  75  * +------------+  0x40                    |
  76  * |            |                          |
  77  * |            |                          |
  78  * |            |                          |
  79  * |            |                          |
  80  * | Image Data |                          |
  81  * .            |                          |
  82  * .            |                           > Stuff to be authenticated ----+
  83  * .            |                          |                                |
  84  * |            |                          |                                |
  85  * |            |                          |                                |
  86  * +------------+                          |                                |
  87  * |            |                          |                                |
  88  * | Fill Data  |                          |                                |
  89  * |            |                          |                                |
  90  * +------------+ Align to ALIGN_SIZE      |                                |
  91  * |    IVT     |                          |                                |
  92  * +------------+ + IVT_SIZE              -                                 |
  93  * |            |                                                           |
  94  * |  CSF DATA  | <---------------------------------------------------------+
  95  * |            |
  96  * +------------+
  97  * |            |
  98  * | Fill Data  |
  99  * |            |
 100  * +------------+ + CSF_PAD_SIZE
 101  */
 102
 103 #define MAX_RECORD_BYTES     (8*1024) /* 4 kbytes */
 104
 105 struct record {
 106         uint8_t  tag;                                           /* Tag */
 107         uint8_t  len[2];                                        /* Length */
 108         uint8_t  par;                                           /* Version */
 109         uint8_t  contents[MAX_RECORD_BYTES];/* Record Data */
 110         bool     any_rec_flag;
 111 };
 112
 113 char *rsn_str[] = {"RSN = HAB_RSN_ANY (0x00)\n",
 114                                    "RSN = HAB_ENG_FAIL (0x30)\n",
 115                                    "RSN = HAB_INV_ADDRESS (0x22)\n",
 116                                    "RSN = HAB_INV_ASSERTION (0x0C)\n",
 117                                    "RSN = HAB_INV_CALL (0x28)\n",
 118                                    "RSN = HAB_INV_CERTIFICATE (0x21)\n",
 119                                    "RSN = HAB_INV_COMMAND (0x06)\n",
 120                                    "RSN = HAB_INV_CSF (0x11)\n",
 121                                    "RSN = HAB_INV_DCD (0x27)\n",
 122                                    "RSN = HAB_INV_INDEX (0x0F)\n",
 123                                    "RSN = HAB_INV_IVT (0x05)\n",
 124                                    "RSN = HAB_INV_KEY (0x1D)\n",
 125                                    "RSN = HAB_INV_RETURN (0x1E)\n",
 126                                    "RSN = HAB_INV_SIGNATURE (0x18)\n",
 127                                    "RSN = HAB_INV_SIZE (0x17)\n",
 128                                    "RSN = HAB_MEM_FAIL (0x2E)\n",
 129                                    "RSN = HAB_OVR_COUNT (0x2B)\n",
 130                                    "RSN = HAB_OVR_STORAGE (0x2D)\n",
 131                                    "RSN = HAB_UNS_ALGORITHM (0x12)\n",
 132                                    "RSN = HAB_UNS_COMMAND (0x03)\n",
 133                                    "RSN = HAB_UNS_ENGINE (0x0A)\n",
 134                                    "RSN = HAB_UNS_ITEM (0x24)\n",
 135                                    "RSN = HAB_UNS_KEY (0x1B)\n",
 136                                    "RSN = HAB_UNS_PROTOCOL (0x14)\n",
 137                                    "RSN = HAB_UNS_STATE (0x09)\n",
 138                                    "RSN = INVALID\n",
 139                                    NULL};
 140
 141 char *sts_str[] = {"STS = HAB_SUCCESS (0xF0)\n",
 142                                    "STS = HAB_FAILURE (0x33)\n",
 143                                    "STS = HAB_WARNING (0x69)\n",
 144                                    "STS = INVALID\n",
 145                                    NULL};
 146
 147 char *eng_str[] = {"ENG = HAB_ENG_ANY (0x00)\n",
 148                                    "ENG = HAB_ENG_SCC (0x03)\n",
 149                                    "ENG = HAB_ENG_RTIC (0x05)\n",
 150                                    "ENG = HAB_ENG_SAHARA (0x06)\n",
 151                                    "ENG = HAB_ENG_CSU (0x0A)\n",
 152                                    "ENG = HAB_ENG_SRTC (0x0C)\n",
 153                                    "ENG = HAB_ENG_DCP (0x1B)\n",
 154                                    "ENG = HAB_ENG_CAAM (0x1D)\n",
 155                                    "ENG = HAB_ENG_SNVS (0x1E)\n",
 156                                    "ENG = HAB_ENG_OCOTP (0x21)\n",
 157                                    "ENG = HAB_ENG_DTCP (0x22)\n",
 158                                    "ENG = HAB_ENG_ROM (0x36)\n",
 159                                    "ENG = HAB_ENG_HDCP (0x24)\n",
 160                                    "ENG = HAB_ENG_RTL (0x77)\n",
 161                                    "ENG = HAB_ENG_SW (0xFF)\n",
 162                                    "ENG = INVALID\n",
 163                                    NULL};
 164
 165 char *ctx_str[] = {"CTX = HAB_CTX_ANY(0x00)\n",
 166                                    "CTX = HAB_CTX_FAB (0xFF)\n",
 167                                    "CTX = HAB_CTX_ENTRY (0xE1)\n",
 168                                    "CTX = HAB_CTX_TARGET (0x33)\n",
 169                                    "CTX = HAB_CTX_AUTHENTICATE (0x0A)\n",
 170                                    "CTX = HAB_CTX_DCD (0xDD)\n",
 171                                    "CTX = HAB_CTX_CSF (0xCF)\n",
 172                                    "CTX = HAB_CTX_COMMAND (0xC0)\n",
 173                                    "CTX = HAB_CTX_AUT_DAT (0xDB)\n",
 174                                    "CTX = HAB_CTX_ASSERT (0xA0)\n",
 175                                    "CTX = HAB_CTX_EXIT (0xEE)\n",
 176                                    "CTX = INVALID\n",
 177                                    NULL};
 178
 179 uint8_t hab_statuses[5] = {
 180         HAB_STS_ANY,
 181         HAB_FAILURE,
 182         HAB_WARNING,
 183         HAB_SUCCESS,
 184         -1
 185 };
 186
 187 uint8_t hab_reasons[26] = {
 188         HAB_RSN_ANY,
 189         HAB_ENG_FAIL,
 190         HAB_INV_ADDRESS,
 191         HAB_INV_ASSERTION,
 192         HAB_INV_CALL,
 193         HAB_INV_CERTIFICATE,
 194         HAB_INV_COMMAND,
 195         HAB_INV_CSF,
 196         HAB_INV_DCD,
 197         HAB_INV_INDEX,
 198         HAB_INV_IVT,
 199         HAB_INV_KEY,
 200         HAB_INV_RETURN,
 201         HAB_INV_SIGNATURE,
 202         HAB_INV_SIZE,
 203         HAB_MEM_FAIL,
 204         HAB_OVR_COUNT,
 205         HAB_OVR_STORAGE,
 206         HAB_UNS_ALGORITHM,
 207         HAB_UNS_COMMAND,
 208         HAB_UNS_ENGINE,
 209         HAB_UNS_ITEM,
 210         HAB_UNS_KEY,
 211         HAB_UNS_PROTOCOL,
 212         HAB_UNS_STATE,
 213         -1
 214 };
 215
 216 uint8_t hab_contexts[12] = {
 217         HAB_CTX_ANY,
 218         HAB_CTX_FAB,
 219         HAB_CTX_ENTRY,
 220         HAB_CTX_TARGET,
 221         HAB_CTX_AUTHENTICATE,
 222         HAB_CTX_DCD,
 223         HAB_CTX_CSF,
 224         HAB_CTX_COMMAND,
 225         HAB_CTX_AUT_DAT,
 226         HAB_CTX_ASSERT,
 227         HAB_CTX_EXIT,
 228         -1
 229 };
 230
 231 uint8_t hab_engines[16] = {
 232         HAB_ENG_ANY,
 233         HAB_ENG_SCC,
 234         HAB_ENG_RTIC,
 235         HAB_ENG_SAHARA,
 236         HAB_ENG_CSU,
 237         HAB_ENG_SRTC,
 238         HAB_ENG_DCP,
 239         HAB_ENG_CAAM,
 240         HAB_ENG_SNVS,
 241         HAB_ENG_OCOTP,
 242         HAB_ENG_DTCP,
 243         HAB_ENG_ROM,
 244         HAB_ENG_HDCP,
 245         HAB_ENG_RTL,
 246         HAB_ENG_SW,
 247         -1
 248 };
 249
 250 bool is_hab_enabled(void)
 251 {
 252         struct imx_sec_config_fuse_t *fuse =
 253                 (struct imx_sec_config_fuse_t *)&imx_sec_config_fuse;
 254         uint32_t reg;
 255         int ret;
 256
 257         ret = fuse_read(fuse->bank, fuse->word, &reg);
 258         if (ret) {
 259                 puts("\nSecure boot fuse read error\n");
 260                 return ret;
 261         }
 262
 263         return (reg & IS_HAB_ENABLED_BIT) == IS_HAB_ENABLED_BIT;
 264 }
 265
 266 static inline uint8_t get_idx(uint8_t *list, uint8_t tgt)
 267 {
 268         uint8_t idx = 0;
 269         uint8_t element = list[idx];
 270         while (element != -1) {
 271                 if (element == tgt)
 272                         return idx;
 273                 element = list[++idx];
 274         }
 275         return -1;
 276 }
 277
 278 void process_event_record(uint8_t *event_data, size_t bytes)
 279 {
 280         struct record *rec = (struct record *)event_data;
 281
 282         printf("\n\n%s", sts_str[get_idx(hab_statuses, rec->contents[0])]);
 283         printf("%s", rsn_str[get_idx(hab_reasons, rec->contents[1])]);
 284         printf("%s", ctx_str[get_idx(hab_contexts, rec->contents[2])]);
 285         printf("%s", eng_str[get_idx(hab_engines, rec->contents[3])]);
 286 }
 287
 288 void display_event(uint8_t *event_data, size_t bytes)
 289 {
 290         uint32_t i;
 291
 292         if (!(event_data && bytes > 0))
 293                 return;
 294
 295         for (i = 0; i < bytes; i++) {
 296                 if (i == 0)
 297                         printf("\t0x%02x", event_data[i]);
 298                 else if ((i % 8) == 0)
 299                         printf("\n\t0x%02x", event_data[i]);
 300                 else
 301                         printf(" 0x%02x", event_data[i]);
 302         }
 303
 304         process_event_record(event_data, bytes);
 305 }
 306
 307 int get_hab_status(void)
 308 {
 309         uint32_t index = 0; /* Loop index */
 310         uint8_t event_data[128]; /* Event data buffer */
 311         size_t bytes = sizeof(event_data); /* Event size in bytes */
 312         enum hab_config config = 0;
 313         enum hab_state state = 0;
 314         hab_rvt_report_event_t *hab_rvt_report_event;
 315         hab_rvt_report_status_t *hab_rvt_report_status;
 316
 317         hab_rvt_report_event = hab_rvt_report_event_p;
 318         hab_rvt_report_status = hab_rvt_report_status_p;
 319
 320         if (is_hab_enabled())
 321                 puts("\nSecure boot enabled\n");
 322         else
 323                 puts("\nSecure boot disabled\n");
 324
 325         /* Check HAB status */
 326         if (hab_rvt_report_status(&config, &state) != HAB_SUCCESS) {
 327                 printf("\nHAB Configuration: 0x%02x, HAB State: 0x%02x\n",
 328                        config, state);
 329
 330                 /* Display HAB Error events */
 331                 while (hab_rvt_report_event(HAB_FAILURE, index, event_data,
 332                                         &bytes) == HAB_SUCCESS) {
 333                         puts("\n");
 334                         printf("--------- HAB Event %d -----------------\n",
 335                                index + 1);
 336                         puts("event data:\n");
 337                         display_event(event_data, bytes);
 338                         puts("\n");
 339                         bytes = sizeof(event_data);
 340                         index++;
 341                 }
 342         }
 343         /* Display message if no HAB events are found */
 344         else {
 345                 printf("\nHAB Configuration: 0x%02x, HAB State: 0x%02x\n",
 346                        config, state);
 347                 puts("No HAB Events Found!\n\n");
 348         }
 349         return 0;
 350 }
 351
 352 uint32_t authenticate_image(uint32_t ddr_start, uint32_t image_size)
 353 {
 354         uint32_t load_addr = 0;
 355         size_t bytes;
 356         ptrdiff_t ivt_offset = 0;
 357         int result = 0;
 358         ulong start;
 359         hab_rvt_authenticate_image_t *hab_rvt_authenticate_image;
 360         hab_rvt_entry_t *hab_rvt_entry;
 361         hab_rvt_exit_t *hab_rvt_exit;
 362
 363         hab_rvt_authenticate_image = hab_rvt_authenticate_image_p;
 364         hab_rvt_entry = hab_rvt_entry_p;
 365         hab_rvt_exit = hab_rvt_exit_p;
 366
 367         if (is_hab_enabled()) {
 368                 printf("\nAuthenticate image from DDR location 0x%x...\n",
 369                        ddr_start);
 370
 371                 hab_caam_clock_enable(1);
 372
 373                 if (hab_rvt_entry() == HAB_SUCCESS) {
 374                         /* If not already aligned, Align to ALIGN_SIZE */
 375                         ivt_offset = (image_size + ALIGN_SIZE - 1) &
 376                                         ~(ALIGN_SIZE - 1);
 377
 378                         start = ddr_start;
 379                         bytes = ivt_offset + IVT_SIZE + CSF_PAD_SIZE;
 380 #ifdef DEBUG
 381                         printf("\nivt_offset = 0x%x, ivt addr = 0x%x\n",
 382                                ivt_offset, ddr_start + ivt_offset);
 383                         puts("Dumping IVT\n");
 384                         print_buffer(ddr_start + ivt_offset,
 385                                      (void *)(ddr_start + ivt_offset),
 386                                      4, 0x8, 0);
 387
 388                         puts("Dumping CSF Header\n");
 389                         print_buffer(ddr_start + ivt_offset+IVT_SIZE,
 390                                      (void *)(ddr_start + ivt_offset+IVT_SIZE),
 391                                      4, 0x10, 0);
 392
 393                         get_hab_status();
 394
 395                         puts("\nCalling authenticate_image in ROM\n");
 396                         printf("\tivt_offset = 0x%x\n", ivt_offset);
 397                         printf("\tstart = 0x%08lx\n", start);
 398                         printf("\tbytes = 0x%x\n", bytes);
 399 #endif
 400                         /*
 401                          * If the MMU is enabled, we have to notify the ROM
 402                          * code, or it won't flush the caches when needed.
 403                          * This is done, by setting the "pu_irom_mmu_enabled"
 404                          * word to 1. You can find its address by looking in
 405                          * the ROM map. This is critical for
 406                          * authenticate_image(). If MMU is enabled, without
 407                          * setting this bit, authentication will fail and may
 408                          * crash.
 409                          */
 410                         /* Check MMU enabled */
 411                         if (is_soc_type(MXC_SOC_MX6) && get_cr() & CR_M) {
 412                                 if (is_mx6dq()) {
 413                                         /*
 414                                          * This won't work on Rev 1.0.0 of
 415                                          * i.MX6Q/D, since their ROM doesn't
 416                                          * do cache flushes. don't think any
 417                                          * exist, so we ignore them.
 418                                          */
 419                                         if (!is_mx6dqp())
 420                                                 writel(1, MX6DQ_PU_IROM_MMU_EN_VAR);
 421                                 } else if (is_mx6sdl()) {
 422                                         writel(1, MX6DLS_PU_IROM_MMU_EN_VAR);
 423                                 } else if (is_mx6sl()) {
 424                                         writel(1, MX6SL_PU_IROM_MMU_EN_VAR);
 425                                 }
 426                         }
 427
 428                         load_addr = (uint32_t)hab_rvt_authenticate_image(
 429                                         HAB_CID_UBOOT,
 430                                         ivt_offset, (void **)&start,
 431                                         (size_t *)&bytes, NULL);
 432                         if (hab_rvt_exit() != HAB_SUCCESS) {
 433                                 puts("hab exit function fail\n");
 434                                 load_addr = 0;
 435                         }
 436                 } else {
 437                         puts("hab entry function fail\n");
 438                 }
 439
 440                 hab_caam_clock_enable(0);
 441
 442                 get_hab_status();
 443         } else {
 444                 puts("hab fuse not enabled\n");
 445         }
 446
 447         if ((!is_hab_enabled()) || (load_addr != 0))
 448                 result = 1;
 449
 450         return result;
 451 }
 452
 453 int do_hab_status(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 454 {
 455         if ((argc != 1)) {
 456                 cmd_usage(cmdtp);
 457                 return 1;
 458         }
 459
 460         get_hab_status();
 461
 462         return 0;
 463 }
 464
 465 static int do_authenticate_image(cmd_tbl_t *cmdtp, int flag, int argc,
 466                                 char * const argv[])
 467 {
 468         ulong   addr, ivt_offset;
 469         int     rcode = 0;
 470
 471         if (argc < 3)
 472                 return CMD_RET_USAGE;
 473
 474         addr = simple_strtoul(argv[1], NULL, 16);
 475         ivt_offset = simple_strtoul(argv[2], NULL, 16);
 476
 477         rcode = authenticate_image(addr, ivt_offset);
 478
 479         return rcode;
 480 }
 481
 482 U_BOOT_CMD(
 483                 hab_status, CONFIG_SYS_MAXARGS, 1, do_hab_status,
 484                 "display HAB status",
 485                 ""
 486           );
 487
 488 U_BOOT_CMD(
 489                 hab_auth_img, 3, 0, do_authenticate_image,
 490                 "authenticate image via HAB",
 491                 "addr ivt_offset\n"
 492                 "addr - image hex address\n"
 493                 "ivt_offset - hex offset of IVT in the image"
 494           );