1 /* 2 * Copyright (C) 2016 The Android Open Source Project 3 * 4 * SPDX-License-Identifier: BSD-2-Clause 5 */ 6 7 #include <android_bootloader.h> 8 #include <android_bootloader_message.h> 9 #include <android_avb/avb_slot_verify.h> 10 #include <android_avb/avb_ops_user.h> 11 #include <android_avb/rk_avb_ops_user.h> 12 #include <android_image.h> 13 #include <cli.h> 14 #include <common.h> 15 #include <dt_table.h> 16 #include <image-android-dt.h> 17 #include <malloc.h> 18 #include <fdt_support.h> 19 #include <fs.h> 20 #include <boot_rkimg.h> 21 #include <attestation_key.h> 22 #include <keymaster.h> 23 #include <linux/libfdt_env.h> 24 #include <optee_include/OpteeClientInterface.h> 25 #include <sysmem.h> 26 27 #define ANDROID_PARTITION_BOOT "boot" 28 #define ANDROID_PARTITION_MISC "misc" 29 #define ANDROID_PARTITION_OEM "oem" 30 #define ANDROID_PARTITION_RECOVERY "recovery" 31 #define ANDROID_PARTITION_SYSTEM "system" 32 #define ANDROID_PARTITION_VBMETA "vbmeta" 33 34 #define ANDROID_ARG_SLOT_SUFFIX "androidboot.slot_suffix=" 35 #define ANDROID_ARG_ROOT "root=" 36 #define ANDROID_ARG_SERIALNO "androidboot.serialno=" 37 #define ANDROID_VERIFY_STATE "androidboot.verifiedbootstate=" 38 #ifdef CONFIG_ROCKCHIP_RESOURCE_IMAGE 39 #define ANDROID_ARG_FDT_FILENAME "rk-kernel.dtb" 40 #define BOOTLOADER_MESSAGE_OFFSET_IN_MISC (16 * 1024) 41 #define BOOTLOADER_MESSAGE_BLK_OFFSET (BOOTLOADER_MESSAGE_OFFSET_IN_MISC >> 9) 42 #else 43 #define ANDROID_ARG_FDT_FILENAME "kernel.dtb" 44 #endif 45 #define OEM_UNLOCK_ARG_SIZE 30 46 #define UUID_SIZE 37 47 48 #if defined(CONFIG_ANDROID_AB) && !defined(CONFIG_ANDROID_AVB) 49 static int get_partition_unique_uuid(char *partition, 50 char *guid_buf, 51 size_t guid_buf_size) 52 { 53 struct blk_desc *dev_desc; 54 disk_partition_t part_info; 55 56 dev_desc = rockchip_get_bootdev(); 57 if (!dev_desc) { 58 printf("%s: Could not find device\n", __func__); 59 return -1; 60 } 61 62 if (part_get_info_by_name(dev_desc, partition, &part_info) < 0) { 63 printf("Could not find \"%s\" partition\n", partition); 64 return -1; 65 } 66 67 if (guid_buf && guid_buf_size > 0) 68 memcpy(guid_buf, part_info.uuid, guid_buf_size); 69 70 return 0; 71 } 72 #endif 73 74 char *android_str_append(char *base_name, char *slot_suffix) 75 { 76 char *part_name; 77 size_t part_name_len; 78 79 part_name_len = strlen(base_name) + 1; 80 if (slot_suffix) 81 part_name_len += strlen(slot_suffix); 82 part_name = malloc(part_name_len); 83 if (!part_name) 84 return NULL; 85 strcpy(part_name, base_name); 86 if (slot_suffix && (slot_suffix[0] != '\0')) 87 strcat(part_name, slot_suffix); 88 89 return part_name; 90 } 91 92 int android_bootloader_message_load( 93 struct blk_desc *dev_desc, 94 const disk_partition_t *part_info, 95 struct android_bootloader_message *message) 96 { 97 ulong message_blocks = sizeof(struct android_bootloader_message) / 98 part_info->blksz; 99 if (message_blocks > part_info->size) { 100 printf("misc partition too small.\n"); 101 return -1; 102 } 103 104 #ifdef CONFIG_RKIMG_BOOTLOADER 105 if (blk_dread(dev_desc, part_info->start + BOOTLOADER_MESSAGE_BLK_OFFSET, 106 message_blocks, message) != 107 #else 108 if (blk_dread(dev_desc, part_info->start, message_blocks, message) != 109 #endif 110 message_blocks) { 111 printf("Could not read from misc partition\n"); 112 return -1; 113 } 114 debug("ANDROID: Loaded BCB, %lu blocks.\n", message_blocks); 115 return 0; 116 } 117 118 static int android_bootloader_message_write( 119 struct blk_desc *dev_desc, 120 const disk_partition_t *part_info, 121 struct android_bootloader_message *message) 122 { 123 #ifdef CONFIG_RKIMG_BOOTLOADER 124 ulong message_blocks = sizeof(struct android_bootloader_message) / 125 part_info->blksz + BOOTLOADER_MESSAGE_BLK_OFFSET; 126 #else 127 ulong message_blocks = sizeof(struct android_bootloader_message) / 128 part_info->blksz; 129 #endif 130 if (message_blocks > part_info->size) { 131 printf("misc partition too small.\n"); 132 return -1; 133 } 134 135 if (blk_dwrite(dev_desc, part_info->start, message_blocks, message) != 136 message_blocks) { 137 printf("Could not write to misc partition\n"); 138 return -1; 139 } 140 debug("ANDROID: Wrote new BCB, %lu blocks.\n", message_blocks); 141 return 0; 142 } 143 144 static enum android_boot_mode android_bootloader_load_and_clear_mode( 145 struct blk_desc *dev_desc, 146 const disk_partition_t *misc_part_info) 147 { 148 struct android_bootloader_message bcb; 149 150 #ifdef CONFIG_FASTBOOT 151 char *bootloader_str; 152 153 /* Check for message from bootloader stored in RAM from a previous boot. 154 */ 155 bootloader_str = (char *)CONFIG_FASTBOOT_BUF_ADDR; 156 if (!strcmp("reboot-bootloader", bootloader_str)) { 157 bootloader_str[0] = '\0'; 158 return ANDROID_BOOT_MODE_BOOTLOADER; 159 } 160 #endif 161 162 /* Check and update the BCB message if needed. */ 163 if (android_bootloader_message_load(dev_desc, misc_part_info, &bcb) < 164 0) { 165 printf("WARNING: Unable to load the BCB.\n"); 166 return ANDROID_BOOT_MODE_NORMAL; 167 } 168 169 if (!strcmp("bootonce-bootloader", bcb.command)) { 170 /* Erase the message in the BCB since this value should be used 171 * only once. 172 */ 173 memset(bcb.command, 0, sizeof(bcb.command)); 174 android_bootloader_message_write(dev_desc, misc_part_info, 175 &bcb); 176 return ANDROID_BOOT_MODE_BOOTLOADER; 177 } 178 179 if (!strcmp("boot-recovery", bcb.command)) 180 return ANDROID_BOOT_MODE_RECOVERY; 181 182 return ANDROID_BOOT_MODE_NORMAL; 183 } 184 185 /** 186 * Return the reboot reason string for the passed boot mode. 187 * 188 * @param mode The Android Boot mode. 189 * @return a pointer to the reboot reason string for mode. 190 */ 191 static const char *android_boot_mode_str(enum android_boot_mode mode) 192 { 193 switch (mode) { 194 case ANDROID_BOOT_MODE_NORMAL: 195 return "(none)"; 196 case ANDROID_BOOT_MODE_RECOVERY: 197 return "recovery"; 198 case ANDROID_BOOT_MODE_BOOTLOADER: 199 return "bootloader"; 200 } 201 return NULL; 202 } 203 204 static int android_part_get_info_by_name_suffix(struct blk_desc *dev_desc, 205 const char *base_name, 206 const char *slot_suffix, 207 disk_partition_t *part_info) 208 { 209 char *part_name; 210 int part_num; 211 size_t part_name_len; 212 213 part_name_len = strlen(base_name) + 1; 214 if (slot_suffix) 215 part_name_len += strlen(slot_suffix); 216 part_name = malloc(part_name_len); 217 if (!part_name) 218 return -1; 219 strcpy(part_name, base_name); 220 if (slot_suffix && (slot_suffix[0] != '\0')) 221 strcat(part_name, slot_suffix); 222 223 part_num = part_get_info_by_name(dev_desc, part_name, part_info); 224 if (part_num < 0) { 225 debug("ANDROID: Could not find partition \"%s\"\n", part_name); 226 part_num = -1; 227 } 228 229 free(part_name); 230 return part_num; 231 } 232 233 static int android_bootloader_boot_bootloader(void) 234 { 235 const char *fastboot_cmd = env_get("fastbootcmd"); 236 237 if (fastboot_cmd == NULL) { 238 printf("fastboot_cmd is null, run default fastboot_cmd!\n"); 239 fastboot_cmd = "fastboot usb 0"; 240 } 241 242 return run_command(fastboot_cmd, CMD_FLAG_ENV); 243 } 244 245 #ifdef CONFIG_SUPPORT_OEM_DTB 246 static int android_bootloader_get_fdt(const char *part_name, 247 const char *load_file_name) 248 { 249 struct blk_desc *dev_desc; 250 disk_partition_t boot_part_info; 251 char *fdt_addr = NULL; 252 char slot_suffix[5] = {0}; 253 char dev_part[3] = {0}; 254 loff_t bytes = 0; 255 loff_t pos = 0; 256 loff_t len_read; 257 unsigned long addr = 0; 258 int part_num = -1; 259 int ret; 260 261 dev_desc = rockchip_get_bootdev(); 262 if (!dev_desc) { 263 printf("%s: dev_desc is NULL!\n", __func__); 264 return -1; 265 } 266 267 memset(&boot_part_info, 0, sizeof(boot_part_info)); 268 269 #ifdef CONFIG_RK_AVB_LIBAVB_USER 270 if (rk_avb_get_current_slot(slot_suffix)) { 271 printf("ANDROID: Get Current Slot error.\n"); 272 return -1; 273 } 274 275 part_num = android_part_get_info_by_name_suffix(dev_desc, 276 part_name, 277 slot_suffix, &boot_part_info); 278 #else 279 part_num = part_get_info_by_name(dev_desc, part_name, &boot_part_info); 280 if (part_num < 0) { 281 printf("ANDROID: Could not find partition \"%s\"\n", part_name); 282 return -1; 283 } 284 #endif 285 286 snprintf(dev_part, ARRAY_SIZE(dev_part), ":%x", part_num); 287 if (fs_set_blk_dev_with_part(dev_desc, part_num)) 288 return -1; 289 290 fdt_addr = env_get("fdt_addr_r"); 291 if (!fdt_addr) { 292 printf("ANDROID: No Found FDT Load Address.\n"); 293 return -1; 294 } 295 addr = simple_strtoul(fdt_addr, NULL, 16); 296 297 ret = fs_read(load_file_name, addr, pos, bytes, &len_read); 298 if (ret < 0) 299 return -1; 300 301 return 0; 302 } 303 #endif 304 305 int android_bootloader_boot_kernel(unsigned long kernel_address) 306 { 307 ulong comp; 308 char kernel_addr_str[12]; 309 char *fdt_addr = env_get("fdt_addr"); 310 char *kernel_addr_r = env_get("kernel_addr_r"); 311 char *kernel_addr_c = env_get("kernel_addr_c"); 312 313 const char *comp_name[] = { 314 [IH_COMP_NONE] = "", 315 [IH_COMP_GZIP] = "GZIP", 316 [IH_COMP_BZIP2] = "BZIP2", 317 [IH_COMP_LZMA] = "LZMA", 318 [IH_COMP_LZO] = "LZO", 319 [IH_COMP_LZ4] = "LZ4", 320 [IH_COMP_ZIMAGE]= "ZIMAGE", 321 }; 322 char *bootm_args[] = { 323 "bootm", kernel_addr_str, kernel_addr_str, fdt_addr, NULL }; 324 325 comp = android_image_get_comp((struct andr_img_hdr *)kernel_address); 326 sprintf(kernel_addr_str, "0x%lx", kernel_address); 327 328 if (comp != IH_COMP_NONE) 329 printf("Booting %s kernel at %s(Uncompress to %s) with fdt at %s...\n\n\n", 330 comp_name[comp], kernel_addr_c, kernel_addr_r, fdt_addr); 331 else 332 printf("Booting kernel at %s with fdt at %s...\n\n\n", 333 kernel_addr_r, fdt_addr); 334 335 sysmem_dump_check(); 336 337 do_bootm(NULL, 0, 4, bootm_args); 338 339 return -1; 340 } 341 342 static char *strjoin(const char **chunks, char separator) 343 { 344 int len, joined_len = 0; 345 char *ret, *current; 346 const char **p; 347 348 for (p = chunks; *p; p++) 349 joined_len += strlen(*p) + 1; 350 351 if (!joined_len) { 352 ret = malloc(1); 353 if (ret) 354 ret[0] = '\0'; 355 return ret; 356 } 357 358 ret = malloc(joined_len); 359 current = ret; 360 if (!ret) 361 return ret; 362 363 for (p = chunks; *p; p++) { 364 len = strlen(*p); 365 memcpy(current, *p, len); 366 current += len; 367 *current = separator; 368 current++; 369 } 370 /* Replace the last separator by a \0. */ 371 current[-1] = '\0'; 372 return ret; 373 } 374 375 /** android_assemble_cmdline - Assemble the command line to pass to the kernel 376 * @return a newly allocated string 377 */ 378 char *android_assemble_cmdline(const char *slot_suffix, 379 const char *extra_args) 380 { 381 const char *cmdline_chunks[16]; 382 const char **current_chunk = cmdline_chunks; 383 char *env_cmdline, *cmdline, *rootdev_input, *serialno; 384 char *allocated_suffix = NULL; 385 char *allocated_serialno = NULL; 386 char *allocated_rootdev = NULL; 387 unsigned long rootdev_len; 388 389 env_cmdline = env_get("bootargs"); 390 if (env_cmdline) 391 *(current_chunk++) = env_cmdline; 392 393 /* The |slot_suffix| needs to be passed to the kernel to know what 394 * slot to boot from. 395 */ 396 if (slot_suffix) { 397 allocated_suffix = malloc(strlen(ANDROID_ARG_SLOT_SUFFIX) + 398 strlen(slot_suffix) + 1); 399 memset(allocated_suffix, 0, strlen(ANDROID_ARG_SLOT_SUFFIX) 400 + strlen(slot_suffix) + 1); 401 strcpy(allocated_suffix, ANDROID_ARG_SLOT_SUFFIX); 402 strcat(allocated_suffix, slot_suffix); 403 *(current_chunk++) = allocated_suffix; 404 } 405 406 serialno = env_get("serial#"); 407 if (serialno) { 408 allocated_serialno = malloc(strlen(ANDROID_ARG_SERIALNO) + 409 strlen(serialno) + 1); 410 memset(allocated_serialno, 0, strlen(ANDROID_ARG_SERIALNO) + 411 strlen(serialno) + 1); 412 strcpy(allocated_serialno, ANDROID_ARG_SERIALNO); 413 strcat(allocated_serialno, serialno); 414 *(current_chunk++) = allocated_serialno; 415 } 416 417 rootdev_input = env_get("android_rootdev"); 418 if (rootdev_input) { 419 rootdev_len = strlen(ANDROID_ARG_ROOT) + CONFIG_SYS_CBSIZE + 1; 420 allocated_rootdev = malloc(rootdev_len); 421 strcpy(allocated_rootdev, ANDROID_ARG_ROOT); 422 cli_simple_process_macros(rootdev_input, 423 allocated_rootdev + 424 strlen(ANDROID_ARG_ROOT)); 425 /* Make sure that the string is null-terminated since the 426 * previous could not copy to the end of the input string if it 427 * is too big. 428 */ 429 allocated_rootdev[rootdev_len - 1] = '\0'; 430 *(current_chunk++) = allocated_rootdev; 431 } 432 433 if (extra_args) 434 *(current_chunk++) = extra_args; 435 436 *(current_chunk++) = NULL; 437 cmdline = strjoin(cmdline_chunks, ' '); 438 free(allocated_suffix); 439 free(allocated_rootdev); 440 return cmdline; 441 } 442 443 #ifdef CONFIG_ANDROID_AVB 444 static void slot_set_unbootable(AvbABSlotData* slot) 445 { 446 slot->priority = 0; 447 slot->tries_remaining = 0; 448 slot->successful_boot = 0; 449 } 450 451 static AvbSlotVerifyResult android_slot_verify(char *boot_partname, 452 unsigned long *android_load_address, 453 char *slot_suffix) 454 { 455 const char *requested_partitions[1] = {NULL}; 456 uint8_t unlocked = true; 457 AvbOps *ops; 458 AvbSlotVerifyFlags flags; 459 AvbSlotVerifyData *slot_data[1] = {NULL}; 460 AvbSlotVerifyResult verify_result; 461 AvbABData ab_data, ab_data_orig; 462 size_t slot_index_to_boot = 0; 463 char verify_state[38] = {0}; 464 char can_boot = 1; 465 unsigned long load_address = *android_load_address; 466 struct andr_img_hdr *hdr; 467 468 requested_partitions[0] = boot_partname; 469 ops = avb_ops_user_new(); 470 if (ops == NULL) { 471 printf("avb_ops_user_new() failed!\n"); 472 return AVB_SLOT_VERIFY_RESULT_ERROR_OOM; 473 } 474 475 if (ops->read_is_device_unlocked(ops, (bool *)&unlocked) != AVB_IO_RESULT_OK) 476 printf("Error determining whether device is unlocked.\n"); 477 478 printf("read_is_device_unlocked() ops returned that device is %s\n", 479 (unlocked & LOCK_MASK)? "UNLOCKED" : "LOCKED"); 480 481 flags = AVB_SLOT_VERIFY_FLAGS_NONE; 482 if (unlocked & LOCK_MASK) 483 flags |= AVB_SLOT_VERIFY_FLAGS_ALLOW_VERIFICATION_ERROR; 484 485 if(load_metadata(ops->ab_ops, &ab_data, &ab_data_orig)) { 486 printf("Can not load metadata\n"); 487 return AVB_SLOT_VERIFY_RESULT_ERROR_IO; 488 } 489 490 if (!strncmp(slot_suffix, "_a", 2)) 491 slot_index_to_boot = 0; 492 else if (!strncmp(slot_suffix, "_b", 2)) 493 slot_index_to_boot = 1; 494 else 495 slot_index_to_boot = 0; 496 497 verify_result = 498 avb_slot_verify(ops, 499 requested_partitions, 500 slot_suffix, 501 flags, 502 AVB_HASHTREE_ERROR_MODE_RESTART_AND_INVALIDATE, 503 &slot_data[0]); 504 505 strcat(verify_state, ANDROID_VERIFY_STATE); 506 switch (verify_result) { 507 case AVB_SLOT_VERIFY_RESULT_OK: 508 if (unlocked & LOCK_MASK) 509 strcat(verify_state, "orange"); 510 else 511 strcat(verify_state, "green"); 512 break; 513 case AVB_SLOT_VERIFY_RESULT_ERROR_PUBLIC_KEY_REJECTED: 514 if (unlocked & LOCK_MASK) 515 strcat(verify_state, "orange"); 516 else 517 strcat(verify_state, "yellow"); 518 break; 519 case AVB_SLOT_VERIFY_RESULT_ERROR_OOM: 520 case AVB_SLOT_VERIFY_RESULT_ERROR_IO: 521 case AVB_SLOT_VERIFY_RESULT_ERROR_INVALID_METADATA: 522 case AVB_SLOT_VERIFY_RESULT_ERROR_UNSUPPORTED_VERSION: 523 case AVB_SLOT_VERIFY_RESULT_ERROR_VERIFICATION: 524 case AVB_SLOT_VERIFY_RESULT_ERROR_ROLLBACK_INDEX: 525 default: 526 if (unlocked & LOCK_MASK) 527 strcat(verify_state, "orange"); 528 else 529 strcat(verify_state, "red"); 530 break; 531 } 532 533 if (!slot_data[0]) { 534 can_boot = 0; 535 goto out; 536 } 537 538 if (verify_result == AVB_SLOT_VERIFY_RESULT_OK || 539 verify_result == AVB_SLOT_VERIFY_RESULT_ERROR_PUBLIC_KEY_REJECTED || 540 (unlocked & LOCK_MASK)) { 541 int len = 0; 542 char *bootargs, *newbootargs; 543 544 if (*slot_data[0]->cmdline) { 545 debug("Kernel command line: %s\n", slot_data[0]->cmdline); 546 len += strlen(slot_data[0]->cmdline); 547 } 548 549 bootargs = env_get("bootargs"); 550 if (bootargs) 551 len += strlen(bootargs); 552 553 newbootargs = malloc(len + 2); 554 555 if (!newbootargs) { 556 puts("Error: malloc in android_slot_verify failed!\n"); 557 return AVB_SLOT_VERIFY_RESULT_ERROR_OOM; 558 } 559 *newbootargs = '\0'; 560 561 if (bootargs) { 562 strcpy(newbootargs, bootargs); 563 strcat(newbootargs, " "); 564 } 565 if (*slot_data[0]->cmdline) 566 strcat(newbootargs, slot_data[0]->cmdline); 567 env_set("bootargs", newbootargs); 568 569 /* Reserve page_size */ 570 hdr = (void *)slot_data[0]->loaded_partitions->data; 571 load_address -= hdr->page_size; 572 *android_load_address = load_address; 573 574 memcpy((uint8_t *)load_address, 575 slot_data[0]->loaded_partitions->data, 576 slot_data[0]->loaded_partitions->data_size); 577 } else { 578 slot_set_unbootable(&ab_data.slots[slot_index_to_boot]); 579 } 580 581 out: 582 #ifdef CONFIG_ANDROID_AB 583 /* ... and decrement tries remaining, if applicable. */ 584 if (!ab_data.slots[slot_index_to_boot].successful_boot && 585 ab_data.slots[slot_index_to_boot].tries_remaining > 0) { 586 ab_data.slots[slot_index_to_boot].tries_remaining -= 1; 587 } 588 #endif 589 env_update("bootargs", verify_state); 590 if (save_metadata_if_changed(ops->ab_ops, &ab_data, &ab_data_orig)) { 591 printf("Can not save metadata\n"); 592 verify_result = AVB_SLOT_VERIFY_RESULT_ERROR_IO; 593 } 594 595 if (slot_data[0] != NULL) 596 avb_slot_verify_data_free(slot_data[0]); 597 598 if ((unlocked & LOCK_MASK) && can_boot) 599 return 0; 600 else 601 return verify_result; 602 } 603 #endif 604 605 #if defined(CONFIG_CMD_DTIMG) && defined(CONFIG_OF_LIBFDT_OVERLAY) 606 607 /* 608 * Default return index 0. 609 */ 610 __weak int board_select_fdt_index(ulong dt_table_hdr) 611 { 612 /* 613 * User can use "dt_for_each_entry(entry, hdr, idx)" to iterate 614 * over all dt entry of DT image and pick up which they want. 615 * 616 * Example: 617 * struct dt_table_entry *entry; 618 * int index; 619 * 620 * dt_for_each_entry(entry, dt_table_hdr, index) { 621 * 622 * .... (use entry) 623 * } 624 * 625 * return index; 626 */ 627 return 0; 628 } 629 630 static int android_get_dtbo(ulong *fdt_dtbo, 631 const struct andr_img_hdr *hdr, 632 int *index) 633 { 634 struct dt_table_header *dt_hdr = NULL; 635 struct blk_desc *dev_desc; 636 const char *part_name; 637 disk_partition_t part_info; 638 u32 blk_offset, blk_cnt; 639 void *buf; 640 ulong e_addr; 641 u32 e_size; 642 int e_idx; 643 int ret; 644 645 /* Get partition according to boot mode */ 646 if (rockchip_get_boot_mode() == BOOT_MODE_RECOVERY) 647 part_name = PART_RECOVERY; 648 else 649 part_name = PART_DTBO; 650 651 /* Get partition info */ 652 dev_desc = rockchip_get_bootdev(); 653 if (!dev_desc) { 654 printf("%s: dev_desc is NULL!\n", __func__); 655 return -ENODEV; 656 } 657 658 ret = part_get_info_by_name(dev_desc, part_name, &part_info); 659 if (ret < 0) { 660 printf("%s: failed to get %s part info, ret=%d\n", 661 __func__, part_name, ret); 662 return ret; 663 } 664 665 /* Check dt table header */ 666 if (!strcmp(part_name, PART_RECOVERY)) 667 blk_offset = part_info.start + 668 (hdr->recovery_dtbo_offset / part_info.blksz); 669 else 670 blk_offset = part_info.start; 671 672 dt_hdr = memalign(ARCH_DMA_MINALIGN, part_info.blksz); 673 if (!dt_hdr) { 674 printf("%s: out of memory for dt header!\n", __func__); 675 return -ENOMEM; 676 } 677 678 ret = blk_dread(dev_desc, blk_offset, 1, dt_hdr); 679 if (ret != 1) { 680 printf("%s: failed to read dt table header\n", 681 __func__); 682 goto out1; 683 } 684 685 if (!android_dt_check_header((ulong)dt_hdr)) { 686 printf("%s: Error: invalid dt table header: 0x%x\n", 687 __func__, dt_hdr->magic); 688 ret = -EINVAL; 689 goto out1; 690 } 691 692 #ifdef DEBUG 693 android_dt_print_contents((ulong)dt_hdr); 694 #endif 695 696 blk_cnt = DIV_ROUND_UP(fdt32_to_cpu(dt_hdr->total_size), 697 part_info.blksz); 698 /* Read all DT Image */ 699 buf = memalign(ARCH_DMA_MINALIGN, part_info.blksz * blk_cnt); 700 if (!buf) { 701 printf("%s: out of memory for %s part!\n", __func__, part_name); 702 ret = -ENOMEM; 703 goto out1; 704 } 705 706 ret = blk_dread(dev_desc, blk_offset, blk_cnt, buf); 707 if (ret != blk_cnt) { 708 printf("%s: failed to read dtbo, blk_cnt=%d, ret=%d\n", 709 __func__, blk_cnt, ret); 710 goto out2; 711 } 712 713 e_idx = board_select_fdt_index((ulong)buf); 714 if (e_idx < 0) { 715 printf("%s: failed to select board fdt index\n", __func__); 716 ret = -EINVAL; 717 goto out2; 718 } 719 720 ret = android_dt_get_fdt_by_index((ulong)buf, e_idx, &e_addr, &e_size); 721 if (!ret) { 722 printf("%s: failed to get fdt, index=%d\n", __func__, e_idx); 723 ret = -EINVAL; 724 goto out2; 725 } 726 727 if (fdt_dtbo) 728 *fdt_dtbo = e_addr; 729 if (index) 730 *index = e_idx; 731 732 free(dt_hdr); 733 debug("ANDROID: Loading dt entry to 0x%lx size 0x%x idx %d from \"%s\" part\n", 734 e_addr, e_size, e_idx, part_name); 735 736 return 0; 737 738 out2: 739 free(buf); 740 out1: 741 free(dt_hdr); 742 743 return ret; 744 } 745 746 int android_fdt_overlay_apply(void *fdt_addr) 747 { 748 struct andr_img_hdr *hdr; 749 struct blk_desc *dev_desc; 750 const char *part_name; 751 disk_partition_t part_info; 752 char buf[32] = {0}; 753 u32 blk_cnt; 754 ulong fdt_dtbo = -1; 755 int index = -1; 756 int ret; 757 758 /* Get partition according to boot mode */ 759 if (rockchip_get_boot_mode() == BOOT_MODE_RECOVERY) 760 part_name = PART_RECOVERY; 761 else 762 part_name = PART_BOOT; 763 764 /* Get partition info */ 765 dev_desc = rockchip_get_bootdev(); 766 if (!dev_desc) { 767 printf("%s: dev_desc is NULL!\n", __func__); 768 return -ENODEV; 769 } 770 771 ret = part_get_info_by_name(dev_desc, part_name, &part_info); 772 if (ret < 0) { 773 printf("%s: failed to get %s part info, ret=%d\n", 774 __func__, part_name, ret); 775 return ret; 776 } 777 778 blk_cnt = DIV_ROUND_UP(sizeof(*hdr), part_info.blksz); 779 hdr = memalign(ARCH_DMA_MINALIGN, part_info.blksz * blk_cnt); 780 if (!hdr) { 781 printf("%s: out of memory!\n", __func__); 782 return -ENOMEM; 783 } 784 785 ret = blk_dread(dev_desc, part_info.start, blk_cnt, hdr); 786 if (ret != blk_cnt) { 787 printf("%s: failed to read %s hdr!\n", __func__, part_name); 788 goto out; 789 } 790 791 #ifdef DEBUG 792 android_print_contents(hdr); 793 #endif 794 795 if (android_image_check_header(hdr)) { 796 printf("%s: Invalid Android header %s\n", __func__, hdr->magic); 797 return -EINVAL; 798 } 799 800 /* Check header version */ 801 if (!hdr->header_version) { 802 printf("Android header version 0\n"); 803 ret = -EINVAL; 804 goto out; 805 } 806 807 ret = android_get_dtbo(&fdt_dtbo, (void *)hdr, &index); 808 if (!ret) { 809 phys_size_t fdt_size; 810 /* Must incease size before overlay */ 811 fdt_size = fdt_totalsize((void *)fdt_addr) + 812 fdt_totalsize((void *)fdt_dtbo); 813 if (sysmem_free((phys_addr_t)fdt_addr)) 814 goto out; 815 816 if (!sysmem_alloc_base("fdt(dtbo)", 817 (phys_addr_t)fdt_addr, 818 fdt_size + CONFIG_SYS_FDT_PAD)) 819 goto out; 820 fdt_increase_size(fdt_addr, fdt_totalsize((void *)fdt_dtbo)); 821 ret = fdt_overlay_apply(fdt_addr, (void *)fdt_dtbo); 822 if (!ret) { 823 snprintf(buf, 32, "%s%d", "androidboot.dtbo_idx=", index); 824 env_update("bootargs", buf); 825 printf("ANDROID: fdt overlay OK\n"); 826 } else { 827 printf("ANDROID: fdt overlay failed, ret=%d\n", ret); 828 } 829 } 830 831 out: 832 free(hdr); 833 834 return 0; 835 } 836 #endif 837 838 static int load_android_image(struct blk_desc *dev_desc, 839 char *boot_partname, 840 char *slot_suffix, 841 unsigned long *load_address) 842 { 843 disk_partition_t boot_part; 844 int ret, part_num; 845 846 part_num = android_part_get_info_by_name_suffix(dev_desc, 847 boot_partname, 848 slot_suffix, 849 &boot_part); 850 if (part_num < 0) { 851 printf("%s: Can't find part: %s\n", __func__, boot_partname); 852 return -1; 853 } 854 debug("ANDROID: Loading kernel from \"%s\", partition %d.\n", 855 boot_part.name, part_num); 856 857 ret = android_image_load(dev_desc, &boot_part, *load_address, -1UL); 858 if (ret < 0) { 859 debug("%s: %s part load fail, ret=%d\n", 860 __func__, boot_part.name, ret); 861 return ret; 862 } 863 *load_address = ret; 864 865 return 0; 866 } 867 868 static bool avb_enabled; 869 void android_avb_set_enabled(bool enable) 870 { 871 avb_enabled = enable; 872 } 873 874 bool android_avb_is_enabled(void) 875 { 876 return avb_enabled; 877 } 878 879 int android_bootloader_boot_flow(struct blk_desc *dev_desc, 880 unsigned long load_address) 881 { 882 enum android_boot_mode mode = ANDROID_BOOT_MODE_NORMAL; 883 disk_partition_t misc_part_info; 884 int part_num; 885 int ret; 886 char *command_line; 887 char slot_suffix[3] = {0}; 888 const char *mode_cmdline = NULL; 889 char *boot_partname = ANDROID_PARTITION_BOOT; 890 ulong fdt_addr; 891 892 /* 893 * 1. Load MISC partition and determine the boot mode 894 * clear its value for the next boot if needed. 895 */ 896 part_num = part_get_info_by_name(dev_desc, ANDROID_PARTITION_MISC, 897 &misc_part_info); 898 if (part_num < 0) { 899 printf("Could not find misc partition\n"); 900 } else { 901 #ifdef CONFIG_ANDROID_KEYMASTER_CA 902 /* load attestation key from misc partition. */ 903 load_attestation_key(dev_desc, &misc_part_info); 904 #endif 905 906 mode = android_bootloader_load_and_clear_mode(dev_desc, 907 &misc_part_info); 908 #ifdef CONFIG_RKIMG_BOOTLOADER 909 if (mode == ANDROID_BOOT_MODE_NORMAL) { 910 if (rockchip_get_boot_mode() == BOOT_MODE_RECOVERY) 911 mode = ANDROID_BOOT_MODE_RECOVERY; 912 } 913 #endif 914 } 915 916 printf("ANDROID: reboot reason: \"%s\"\n", android_boot_mode_str(mode)); 917 918 #ifdef CONFIG_ANDROID_AB 919 /*TODO: get from pre-loader or misc partition*/ 920 if (rk_avb_get_current_slot(slot_suffix)) 921 return -1; 922 923 AvbOps *ops; 924 AvbABData ab_data; 925 AvbABData ab_data_orig; 926 size_t slot_index_to_boot = 0; 927 928 if (!strncmp(slot_suffix, "_a", 2)) 929 slot_index_to_boot = 0; 930 else if (!strncmp(slot_suffix, "_b", 2)) 931 slot_index_to_boot = 1; 932 else 933 slot_index_to_boot = 0; 934 ops = avb_ops_user_new(); 935 if (ops == NULL) { 936 printf("avb_ops_user_new() failed!\n"); 937 return -1; 938 } 939 940 if(load_metadata(ops->ab_ops, &ab_data, &ab_data_orig)) { 941 printf("Can not load metadata\n"); 942 return -1; 943 } 944 945 /* ... and decrement tries remaining, if applicable. */ 946 if (!ab_data.slots[slot_index_to_boot].successful_boot && 947 ab_data.slots[slot_index_to_boot].tries_remaining > 0) { 948 ab_data.slots[slot_index_to_boot].tries_remaining -= 1; 949 } 950 951 if (save_metadata_if_changed(ops->ab_ops, &ab_data, &ab_data_orig)) { 952 printf("Can not save metadata\n"); 953 return -1; 954 } 955 956 if (slot_suffix[0] != '_') { 957 printf("###There is no bootable slot, bring up lastboot!###\n"); 958 if (rk_get_lastboot() == 1) 959 memcpy(slot_suffix, "_b", 2); 960 else if(rk_get_lastboot() == 0) 961 memcpy(slot_suffix, "_a", 2); 962 else 963 return -1; 964 } 965 #endif 966 967 switch (mode) { 968 case ANDROID_BOOT_MODE_NORMAL: 969 /* In normal mode, we load the kernel from "boot" but append 970 * "skip_initramfs" to the cmdline to make it ignore the 971 * recovery initramfs in the boot partition. 972 */ 973 #if (defined(CONFIG_ANDROID_AB) && !defined(CONFIG_ANDROID_AVB)) 974 { 975 char root_partition[20] = {0}; 976 char guid_buf[UUID_SIZE] = {0}; 977 char root_partuuid[70] = "root=PARTUUID="; 978 979 strcat(root_partition, ANDROID_PARTITION_SYSTEM); 980 strcat(root_partition, slot_suffix); 981 get_partition_unique_uuid(root_partition, guid_buf, UUID_SIZE); 982 strcat(root_partuuid, guid_buf); 983 env_update("bootargs", root_partuuid); 984 } 985 #endif 986 987 #ifdef CONFIG_ANDROID_AB 988 mode_cmdline = "skip_initramfs"; 989 #endif 990 break; 991 case ANDROID_BOOT_MODE_RECOVERY: 992 /* In recovery mode we still boot the kernel from "boot" but 993 * don't skip the initramfs so it boots to recovery. 994 */ 995 #ifndef CONFIG_ANDROID_AB 996 boot_partname = ANDROID_PARTITION_RECOVERY; 997 #endif 998 break; 999 case ANDROID_BOOT_MODE_BOOTLOADER: 1000 /* Bootloader mode enters fastboot. If this operation fails we 1001 * simply return since we can't recover from this situation by 1002 * switching to another slot. 1003 */ 1004 return android_bootloader_boot_bootloader(); 1005 } 1006 1007 #ifdef CONFIG_ANDROID_AVB 1008 uint8_t vboot_flag = 0; 1009 char vbmeta_partition[9] = {0}; 1010 disk_partition_t vbmeta_part_info; 1011 1012 if (trusty_read_vbootkey_enable_flag(&vboot_flag)) 1013 return -1; 1014 1015 if (vboot_flag) { 1016 printf("SecureBoot enabled, AVB verify\n"); 1017 android_avb_set_enabled(true); 1018 if (android_slot_verify(boot_partname, &load_address, 1019 slot_suffix)) 1020 return -1; 1021 } else { 1022 strcat(vbmeta_partition, ANDROID_PARTITION_VBMETA); 1023 strcat(vbmeta_partition, slot_suffix); 1024 part_num = part_get_info_by_name(dev_desc, vbmeta_partition, 1025 &vbmeta_part_info); 1026 if (part_num < 0) { 1027 printf("SecureBoot disabled, AVB skip\n"); 1028 env_update("bootargs", 1029 "androidboot.verifiedbootstate=orange"); 1030 android_avb_set_enabled(false); 1031 if (load_android_image(dev_desc, boot_partname, 1032 slot_suffix, &load_address)) 1033 return -1; 1034 } else { 1035 printf("SecureBoot enabled, AVB verify\n"); 1036 android_avb_set_enabled(true); 1037 if (android_slot_verify(boot_partname, &load_address, 1038 slot_suffix)) 1039 return -1; 1040 } 1041 } 1042 #else 1043 /* 1044 * 2. Load the boot/recovery from the desired "boot" partition. 1045 * Determine if this is an AOSP image. 1046 */ 1047 if (load_android_image(dev_desc, boot_partname, 1048 slot_suffix, &load_address)) 1049 return -1; 1050 #endif 1051 1052 /* Set Android root variables. */ 1053 env_set_ulong("android_root_devnum", dev_desc->devnum); 1054 env_set("android_slotsufix", slot_suffix); 1055 1056 #ifdef CONFIG_FASTBOOT_OEM_UNLOCK 1057 /* read oem unlock status and attach to bootargs */ 1058 uint8_t unlock = 0; 1059 TEEC_Result result; 1060 char oem_unlock[OEM_UNLOCK_ARG_SIZE] = {0}; 1061 result = trusty_read_oem_unlock(&unlock); 1062 if (result) { 1063 printf("read oem unlock status with error : 0x%x\n", result); 1064 } else { 1065 snprintf(oem_unlock, OEM_UNLOCK_ARG_SIZE, "androidboot.oem_unlocked=%d", unlock); 1066 env_update("bootargs", oem_unlock); 1067 } 1068 #endif 1069 1070 /* Assemble the command line */ 1071 command_line = android_assemble_cmdline(slot_suffix, mode_cmdline); 1072 env_update("bootargs", command_line); 1073 1074 debug("ANDROID: bootargs: \"%s\"\n", command_line); 1075 1076 #ifdef CONFIG_SUPPORT_OEM_DTB 1077 if (android_bootloader_get_fdt(ANDROID_PARTITION_OEM, 1078 ANDROID_ARG_FDT_FILENAME)) { 1079 printf("Can not get the fdt data from oem!\n"); 1080 } 1081 #else 1082 ret = android_image_get_fdt((void *)load_address, &fdt_addr); 1083 if (!ret) 1084 env_set_hex("fdt_addr", fdt_addr); 1085 #endif 1086 android_bootloader_boot_kernel(load_address); 1087 1088 /* TODO: If the kernel doesn't boot mark the selected slot as bad. */ 1089 return -1; 1090 } 1091 1092 int android_avb_boot_flow(char *slot_suffix, unsigned long kernel_address) 1093 { 1094 struct blk_desc *dev_desc; 1095 disk_partition_t boot_part_info; 1096 int ret; 1097 dev_desc = rockchip_get_bootdev(); 1098 if (!dev_desc) { 1099 printf("%s: dev_desc is NULL!\n", __func__); 1100 return -1; 1101 } 1102 /* Load the kernel from the desired "boot" partition. */ 1103 android_part_get_info_by_name_suffix(dev_desc, 1104 ANDROID_PARTITION_BOOT, 1105 slot_suffix, &boot_part_info); 1106 ret = android_image_load(dev_desc, &boot_part_info, kernel_address, 1107 -1UL); 1108 if (ret < 0) 1109 return ret; 1110 android_bootloader_boot_kernel(kernel_address); 1111 1112 /* TODO: If the kernel doesn't boot mark the selected slot as bad. */ 1113 return -1; 1114 } 1115 1116 int android_boot_flow(unsigned long kernel_address) 1117 { 1118 struct blk_desc *dev_desc; 1119 disk_partition_t boot_part_info; 1120 int ret; 1121 dev_desc = rockchip_get_bootdev(); 1122 if (!dev_desc) { 1123 printf("%s: dev_desc is NULL!\n", __func__); 1124 return -1; 1125 } 1126 /* Load the kernel from the desired "boot" partition. */ 1127 part_get_info_by_name(dev_desc, ANDROID_PARTITION_BOOT, &boot_part_info); 1128 ret = android_image_load(dev_desc, &boot_part_info, kernel_address, 1129 -1UL); 1130 if (ret < 0) 1131 return ret; 1132 android_bootloader_boot_kernel(kernel_address); 1133 1134 /* TODO: If the kernel doesn't boot mark the selected slot as bad. */ 1135 return -1; 1136 } 1137