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