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 <android_ab.h> 14 #include <bootm.h> 15 #include <asm/arch/hotkey.h> 16 #include <cli.h> 17 #include <common.h> 18 #include <dt_table.h> 19 #include <image-android-dt.h> 20 #include <malloc.h> 21 #include <fdt_support.h> 22 #include <fs.h> 23 #include <boot_rkimg.h> 24 #include <attestation_key.h> 25 #include <keymaster.h> 26 #include <linux/libfdt_env.h> 27 #include <optee_include/OpteeClientInterface.h> 28 #include <bidram.h> 29 #include <console.h> 30 #include <sysmem.h> 31 32 DECLARE_GLOBAL_DATA_PTR; 33 34 int android_bootloader_message_load( 35 struct blk_desc *dev_desc, 36 const disk_partition_t *part_info, 37 struct android_bootloader_message *message) 38 { 39 ulong message_blocks = sizeof(struct android_bootloader_message) / 40 part_info->blksz; 41 if (message_blocks > part_info->size) { 42 printf("misc partition too small.\n"); 43 return -1; 44 } 45 46 if (blk_dread(dev_desc, part_info->start + android_bcb_msg_sector_offset(), 47 message_blocks, message) != 48 message_blocks) { 49 printf("Could not read from misc partition\n"); 50 return -1; 51 } 52 debug("ANDROID: Loaded BCB, %lu blocks.\n", message_blocks); 53 return 0; 54 } 55 56 static int android_bootloader_message_write( 57 struct blk_desc *dev_desc, 58 const disk_partition_t *part_info, 59 struct android_bootloader_message *message) 60 { 61 ulong message_blocks = sizeof(struct android_bootloader_message) / 62 part_info->blksz + android_bcb_msg_sector_offset(); 63 64 if (message_blocks > part_info->size) { 65 printf("misc partition too small.\n"); 66 return -1; 67 } 68 69 if (blk_dwrite(dev_desc, part_info->start, message_blocks, message) != 70 message_blocks) { 71 printf("Could not write to misc partition\n"); 72 return -1; 73 } 74 debug("ANDROID: Wrote new BCB, %lu blocks.\n", message_blocks); 75 return 0; 76 } 77 78 static enum android_boot_mode android_bootloader_load_and_clear_mode( 79 struct blk_desc *dev_desc, 80 const disk_partition_t *misc_part_info) 81 { 82 struct android_bootloader_message bcb; 83 84 #ifdef CONFIG_FASTBOOT 85 char *bootloader_str; 86 87 /* Check for message from bootloader stored in RAM from a previous boot. 88 */ 89 bootloader_str = (char *)CONFIG_FASTBOOT_BUF_ADDR; 90 if (!strcmp("reboot-bootloader", bootloader_str)) { 91 bootloader_str[0] = '\0'; 92 return ANDROID_BOOT_MODE_BOOTLOADER; 93 } 94 #endif 95 96 /* Check and update the BCB message if needed. */ 97 if (android_bootloader_message_load(dev_desc, misc_part_info, &bcb) < 98 0) { 99 printf("WARNING: Unable to load the BCB.\n"); 100 return ANDROID_BOOT_MODE_NORMAL; 101 } 102 103 if (!strcmp("bootonce-bootloader", bcb.command)) { 104 /* Erase the message in the BCB since this value should be used 105 * only once. 106 */ 107 memset(bcb.command, 0, sizeof(bcb.command)); 108 android_bootloader_message_write(dev_desc, misc_part_info, 109 &bcb); 110 return ANDROID_BOOT_MODE_BOOTLOADER; 111 } 112 113 if (!strcmp("boot-recovery", bcb.command)) 114 return ANDROID_BOOT_MODE_RECOVERY; 115 116 if (!strcmp("boot-fastboot", bcb.command)) 117 return ANDROID_BOOT_MODE_RECOVERY; 118 119 return ANDROID_BOOT_MODE_NORMAL; 120 } 121 122 int android_bcb_write(char *cmd) 123 { 124 struct android_bootloader_message message = {0}; 125 disk_partition_t part_info; 126 struct blk_desc *dev_desc; 127 int ret; 128 129 if (!cmd) 130 return -ENOMEM; 131 132 if (strlen(cmd) >= 32) 133 return -ENOMEM; 134 135 dev_desc = rockchip_get_bootdev(); 136 if (!dev_desc) { 137 printf("%s: dev_desc is NULL!\n", __func__); 138 return -ENODEV; 139 } 140 141 ret = part_get_info_by_name(dev_desc, ANDROID_PARTITION_MISC, &part_info); 142 if (ret < 0) { 143 printf("%s: Could not found misc partition, just run recovery\n", 144 __func__); 145 return -ENODEV; 146 } 147 148 strcpy(message.command, cmd); 149 return android_bootloader_message_write(dev_desc, &part_info, &message); 150 } 151 152 /** 153 * Return the reboot reason string for the passed boot mode. 154 * 155 * @param mode The Android Boot mode. 156 * @return a pointer to the reboot reason string for mode. 157 */ 158 static const char *android_boot_mode_str(enum android_boot_mode mode) 159 { 160 switch (mode) { 161 case ANDROID_BOOT_MODE_NORMAL: 162 return "(none)"; 163 case ANDROID_BOOT_MODE_RECOVERY: 164 return "recovery"; 165 case ANDROID_BOOT_MODE_BOOTLOADER: 166 return "bootloader"; 167 } 168 return NULL; 169 } 170 171 static int android_bootloader_boot_bootloader(void) 172 { 173 const char *fastboot_cmd = env_get("fastbootcmd"); 174 175 if (fastboot_cmd == NULL) { 176 printf("fastboot_cmd is null, run default fastboot_cmd!\n"); 177 fastboot_cmd = "fastboot usb 0"; 178 } 179 180 return run_command(fastboot_cmd, CMD_FLAG_ENV); 181 } 182 183 #ifdef CONFIG_SUPPORT_OEM_DTB 184 static int android_bootloader_get_fdt(const char *part_name, 185 const char *load_file_name) 186 { 187 struct blk_desc *dev_desc; 188 disk_partition_t part_info; 189 char *fdt_addr = NULL; 190 char dev_part[3] = {0}; 191 loff_t bytes = 0; 192 loff_t pos = 0; 193 loff_t len_read; 194 unsigned long addr = 0; 195 int part_num = -1; 196 int ret; 197 198 dev_desc = rockchip_get_bootdev(); 199 if (!dev_desc) { 200 printf("%s: dev_desc is NULL!\n", __func__); 201 return -1; 202 } 203 204 part_num = part_get_info_by_name(dev_desc, part_name, &part_info); 205 if (part_num < 0) { 206 printf("ANDROID: Could not find partition \"%s\"\n", part_name); 207 return -1; 208 } 209 210 snprintf(dev_part, ARRAY_SIZE(dev_part), ":%x", part_num); 211 if (fs_set_blk_dev_with_part(dev_desc, part_num)) 212 return -1; 213 214 fdt_addr = env_get("fdt_addr_r"); 215 if (!fdt_addr) { 216 printf("ANDROID: No Found FDT Load Address.\n"); 217 return -1; 218 } 219 addr = simple_strtoul(fdt_addr, NULL, 16); 220 221 ret = fs_read(load_file_name, addr, pos, bytes, &len_read); 222 if (ret < 0) 223 return -1; 224 225 return 0; 226 } 227 #endif 228 229 /* 230 * Test on RK3308 AARCH64 mode (Cortex A35 816 MHZ) boot with eMMC: 231 * 232 * |-------------------------------------------------------------------| 233 * | Format | Size(Byte) | Ratio | Decomp time(ms) | Boot time(ms) | 234 * |-------------------------------------------------------------------| 235 * | Image | 7720968 | | | 488 | 236 * |-------------------------------------------------------------------| 237 * | Image.lz4 | 4119448 | 53% | 59 | 455 | 238 * |-------------------------------------------------------------------| 239 * | Image.lzo | 3858322 | 49% | 141 | 536 | 240 * |-------------------------------------------------------------------| 241 * | Image.gz | 3529108 | 45% | 222 | 609 | 242 * |-------------------------------------------------------------------| 243 * | Image.bz2 | 3295914 | 42% | 2940 | | 244 * |-------------------------------------------------------------------| 245 * | Image.lzma| 2683750 | 34% | | | 246 * |-------------------------------------------------------------------| 247 */ 248 static int sysmem_alloc_uncomp_kernel(ulong andr_hdr, 249 ulong uncomp_kaddr, u32 comp) 250 { 251 struct andr_img_hdr *hdr = (struct andr_img_hdr *)andr_hdr; 252 ulong ksize, kaddr; 253 254 if (comp != IH_COMP_NONE) { 255 /* Release compressed sysmem */ 256 kaddr = env_get_hex("kernel_addr_c", 0); 257 if (!kaddr) 258 kaddr = env_get_hex("kernel_addr_r", 0); 259 kaddr -= hdr->page_size; 260 if (sysmem_free((phys_addr_t)kaddr)) 261 return -EINVAL; 262 #ifdef CONFIG_SKIP_RELOCATE_UBOOT 263 sysmem_free(CONFIG_SYS_TEXT_BASE); 264 #endif 265 /* 266 * Use smaller Ratio to get larger estimated uncompress 267 * kernel size. 268 */ 269 if (comp == IH_COMP_ZIMAGE) 270 ksize = hdr->kernel_size * 100 / 45; 271 else if (comp == IH_COMP_LZ4) 272 ksize = hdr->kernel_size * 100 / 50; 273 else if (comp == IH_COMP_LZO) 274 ksize = hdr->kernel_size * 100 / 45; 275 else if (comp == IH_COMP_GZIP) 276 ksize = hdr->kernel_size * 100 / 40; 277 else if (comp == IH_COMP_BZIP2) 278 ksize = hdr->kernel_size * 100 / 40; 279 else if (comp == IH_COMP_LZMA) 280 ksize = hdr->kernel_size * 100 / 30; 281 else 282 ksize = hdr->kernel_size; 283 284 kaddr = uncomp_kaddr; 285 ksize = ALIGN(ksize, 512); 286 if (!sysmem_alloc_base(MEM_UNCOMP_KERNEL, 287 (phys_addr_t)kaddr, ksize)) 288 return -ENOMEM; 289 } 290 291 return 0; 292 } 293 294 int android_bootloader_boot_kernel(unsigned long kernel_address) 295 { 296 char *kernel_addr_r = env_get("kernel_addr_r"); 297 char *kernel_addr_c = env_get("kernel_addr_c"); 298 char *fdt_addr = env_get("fdt_addr_r"); 299 char kernel_addr_str[12]; 300 char comp_str[32] = {0}; 301 ulong comp_type; 302 const char *comp_name[] = { 303 [IH_COMP_NONE] = "IMAGE", 304 [IH_COMP_GZIP] = "GZIP", 305 [IH_COMP_BZIP2] = "BZIP2", 306 [IH_COMP_LZMA] = "LZMA", 307 [IH_COMP_LZO] = "LZO", 308 [IH_COMP_LZ4] = "LZ4", 309 [IH_COMP_ZIMAGE]= "ZIMAGE", 310 }; 311 char *bootm_args[] = { 312 kernel_addr_str, kernel_addr_str, fdt_addr, NULL }; 313 314 comp_type = env_get_ulong("os_comp", 10, 0); 315 sprintf(kernel_addr_str, "0x%08lx", kernel_address); 316 317 if (comp_type != IH_COMP_NONE) { 318 if (comp_type == IH_COMP_ZIMAGE && 319 kernel_addr_r && !kernel_addr_c) { 320 kernel_addr_c = kernel_addr_r; 321 kernel_addr_r = __stringify(CONFIG_SYS_SDRAM_BASE); 322 } 323 snprintf(comp_str, 32, "%s%s%s", 324 "(Uncompress to ", kernel_addr_r, ")"); 325 } 326 327 printf("Booting %s kernel at %s%s with fdt at %s...\n\n\n", 328 comp_name[comp_type], 329 comp_type != IH_COMP_NONE ? kernel_addr_c : kernel_addr_r, 330 comp_str, fdt_addr); 331 332 hotkey_run(HK_SYSMEM); 333 334 /* 335 * Check whether there is enough space for uncompress kernel, 336 * Actually, here only gives a sysmem warning message when failed 337 * but never return -1. 338 */ 339 if (sysmem_alloc_uncomp_kernel(kernel_address, 340 simple_strtoul(kernel_addr_r, NULL, 16), 341 comp_type)) 342 return -1; 343 344 return do_bootm_states(NULL, 0, ARRAY_SIZE(bootm_args), bootm_args, 345 BOOTM_STATE_START | 346 BOOTM_STATE_FINDOS | BOOTM_STATE_FINDOTHER | 347 BOOTM_STATE_LOADOS | 348 #ifdef CONFIG_SYS_BOOT_RAMDISK_HIGH 349 BOOTM_STATE_RAMDISK | 350 #endif 351 BOOTM_STATE_OS_PREP | BOOTM_STATE_OS_FAKE_GO | 352 BOOTM_STATE_OS_GO, &images, 1); 353 } 354 355 static char *strjoin(const char **chunks, char separator) 356 { 357 int len, joined_len = 0; 358 char *ret, *current; 359 const char **p; 360 361 for (p = chunks; *p; p++) 362 joined_len += strlen(*p) + 1; 363 364 if (!joined_len) { 365 ret = malloc(1); 366 if (ret) 367 ret[0] = '\0'; 368 return ret; 369 } 370 371 ret = malloc(joined_len); 372 current = ret; 373 if (!ret) 374 return ret; 375 376 for (p = chunks; *p; p++) { 377 len = strlen(*p); 378 memcpy(current, *p, len); 379 current += len; 380 *current = separator; 381 current++; 382 } 383 /* Replace the last separator by a \0. */ 384 current[-1] = '\0'; 385 return ret; 386 } 387 388 /** android_assemble_cmdline - Assemble the command line to pass to the kernel 389 * @return a newly allocated string 390 */ 391 char *android_assemble_cmdline(const char *slot_suffix, 392 const char *extra_args) 393 { 394 const char *cmdline_chunks[16]; 395 const char **current_chunk = cmdline_chunks; 396 char *env_cmdline, *cmdline, *rootdev_input, *serialno; 397 char *allocated_suffix = NULL; 398 char *allocated_serialno = NULL; 399 char *allocated_rootdev = NULL; 400 unsigned long rootdev_len; 401 402 env_cmdline = env_get("bootargs"); 403 if (env_cmdline) 404 *(current_chunk++) = env_cmdline; 405 406 /* The |slot_suffix| needs to be passed to the kernel to know what 407 * slot to boot from. 408 */ 409 #ifdef CONFIG_ANDROID_AB 410 if (slot_suffix) { 411 allocated_suffix = malloc(strlen(ANDROID_ARG_SLOT_SUFFIX) + 412 strlen(slot_suffix) + 1); 413 memset(allocated_suffix, 0, strlen(ANDROID_ARG_SLOT_SUFFIX) 414 + strlen(slot_suffix) + 1); 415 strcpy(allocated_suffix, ANDROID_ARG_SLOT_SUFFIX); 416 strcat(allocated_suffix, slot_suffix); 417 *(current_chunk++) = allocated_suffix; 418 } 419 #endif 420 serialno = env_get("serial#"); 421 if (serialno) { 422 allocated_serialno = malloc(strlen(ANDROID_ARG_SERIALNO) + 423 strlen(serialno) + 1); 424 memset(allocated_serialno, 0, strlen(ANDROID_ARG_SERIALNO) + 425 strlen(serialno) + 1); 426 strcpy(allocated_serialno, ANDROID_ARG_SERIALNO); 427 strcat(allocated_serialno, serialno); 428 *(current_chunk++) = allocated_serialno; 429 } 430 431 rootdev_input = env_get("android_rootdev"); 432 if (rootdev_input) { 433 rootdev_len = strlen(ANDROID_ARG_ROOT) + CONFIG_SYS_CBSIZE + 1; 434 allocated_rootdev = malloc(rootdev_len); 435 strcpy(allocated_rootdev, ANDROID_ARG_ROOT); 436 cli_simple_process_macros(rootdev_input, 437 allocated_rootdev + 438 strlen(ANDROID_ARG_ROOT)); 439 /* Make sure that the string is null-terminated since the 440 * previous could not copy to the end of the input string if it 441 * is too big. 442 */ 443 allocated_rootdev[rootdev_len - 1] = '\0'; 444 *(current_chunk++) = allocated_rootdev; 445 } 446 447 if (extra_args) 448 *(current_chunk++) = extra_args; 449 450 *(current_chunk++) = NULL; 451 cmdline = strjoin(cmdline_chunks, ' '); 452 free(allocated_suffix); 453 free(allocated_rootdev); 454 return cmdline; 455 } 456 457 #ifdef CONFIG_ANDROID_AVB 458 static void slot_set_unbootable(AvbABSlotData* slot) 459 { 460 slot->priority = 0; 461 slot->tries_remaining = 0; 462 slot->successful_boot = 0; 463 } 464 465 static AvbSlotVerifyResult android_slot_verify(char *boot_partname, 466 unsigned long *android_load_address, 467 char *slot_suffix) 468 { 469 const char *requested_partitions[1] = {NULL}; 470 uint8_t unlocked = true; 471 AvbOps *ops; 472 AvbSlotVerifyFlags flags; 473 AvbSlotVerifyData *slot_data[1] = {NULL}; 474 AvbSlotVerifyResult verify_result; 475 AvbABData ab_data, ab_data_orig; 476 size_t slot_index_to_boot = 0; 477 char verify_state[38] = {0}; 478 char can_boot = 1; 479 char retry_no_vbmeta_partition = 1; 480 unsigned long load_address = *android_load_address; 481 struct andr_img_hdr *hdr; 482 483 requested_partitions[0] = boot_partname; 484 ops = avb_ops_user_new(); 485 if (ops == NULL) { 486 printf("avb_ops_user_new() failed!\n"); 487 return AVB_SLOT_VERIFY_RESULT_ERROR_OOM; 488 } 489 490 if (ops->read_is_device_unlocked(ops, (bool *)&unlocked) != AVB_IO_RESULT_OK) 491 printf("Error determining whether device is unlocked.\n"); 492 493 printf("read_is_device_unlocked() ops returned that device is %s\n", 494 (unlocked & LOCK_MASK)? "UNLOCKED" : "LOCKED"); 495 496 flags = AVB_SLOT_VERIFY_FLAGS_NONE; 497 if (unlocked & LOCK_MASK) 498 flags |= AVB_SLOT_VERIFY_FLAGS_ALLOW_VERIFICATION_ERROR; 499 500 if(load_metadata(ops->ab_ops, &ab_data, &ab_data_orig)) { 501 printf("Can not load metadata\n"); 502 return AVB_SLOT_VERIFY_RESULT_ERROR_IO; 503 } 504 505 if (!strncmp(slot_suffix, "_a", 2)) 506 slot_index_to_boot = 0; 507 else if (!strncmp(slot_suffix, "_b", 2)) 508 slot_index_to_boot = 1; 509 else 510 slot_index_to_boot = 0; 511 512 if (strcmp(boot_partname, "recovery") == 0) 513 flags |= AVB_SLOT_VERIFY_FLAGS_NO_VBMETA_PARTITION; 514 515 retry_verify: 516 verify_result = 517 avb_slot_verify(ops, 518 requested_partitions, 519 slot_suffix, 520 flags, 521 AVB_HASHTREE_ERROR_MODE_RESTART, 522 &slot_data[0]); 523 if (verify_result != AVB_SLOT_VERIFY_RESULT_OK && 524 verify_result != AVB_SLOT_VERIFY_RESULT_ERROR_PUBLIC_KEY_REJECTED) { 525 if (retry_no_vbmeta_partition && strcmp(boot_partname, "recovery") == 0) { 526 printf("Verify recovery with vbmeta.\n"); 527 flags &= ~AVB_SLOT_VERIFY_FLAGS_NO_VBMETA_PARTITION; 528 retry_no_vbmeta_partition = 0; 529 goto retry_verify; 530 } 531 } 532 533 strcat(verify_state, ANDROID_VERIFY_STATE); 534 switch (verify_result) { 535 case AVB_SLOT_VERIFY_RESULT_OK: 536 if (unlocked & LOCK_MASK) 537 strcat(verify_state, "orange"); 538 else 539 strcat(verify_state, "green"); 540 break; 541 case AVB_SLOT_VERIFY_RESULT_ERROR_PUBLIC_KEY_REJECTED: 542 if (unlocked & LOCK_MASK) 543 strcat(verify_state, "orange"); 544 else 545 strcat(verify_state, "yellow"); 546 break; 547 case AVB_SLOT_VERIFY_RESULT_ERROR_OOM: 548 case AVB_SLOT_VERIFY_RESULT_ERROR_IO: 549 case AVB_SLOT_VERIFY_RESULT_ERROR_INVALID_METADATA: 550 case AVB_SLOT_VERIFY_RESULT_ERROR_UNSUPPORTED_VERSION: 551 case AVB_SLOT_VERIFY_RESULT_ERROR_VERIFICATION: 552 case AVB_SLOT_VERIFY_RESULT_ERROR_ROLLBACK_INDEX: 553 default: 554 if (unlocked & LOCK_MASK) 555 strcat(verify_state, "orange"); 556 else 557 strcat(verify_state, "red"); 558 break; 559 } 560 561 if (!slot_data[0]) { 562 can_boot = 0; 563 goto out; 564 } 565 566 if (verify_result == AVB_SLOT_VERIFY_RESULT_OK || 567 verify_result == AVB_SLOT_VERIFY_RESULT_ERROR_PUBLIC_KEY_REJECTED || 568 (unlocked & LOCK_MASK)) { 569 int len = 0; 570 char *bootargs, *newbootargs; 571 572 if (*slot_data[0]->cmdline) { 573 debug("Kernel command line: %s\n", slot_data[0]->cmdline); 574 len += strlen(slot_data[0]->cmdline); 575 } 576 577 bootargs = env_get("bootargs"); 578 if (bootargs) 579 len += strlen(bootargs); 580 581 newbootargs = malloc(len + 2); 582 583 if (!newbootargs) { 584 puts("Error: malloc in android_slot_verify failed!\n"); 585 return AVB_SLOT_VERIFY_RESULT_ERROR_OOM; 586 } 587 *newbootargs = '\0'; 588 589 if (bootargs) { 590 strcpy(newbootargs, bootargs); 591 strcat(newbootargs, " "); 592 } 593 if (*slot_data[0]->cmdline) 594 strcat(newbootargs, slot_data[0]->cmdline); 595 env_set("bootargs", newbootargs); 596 597 hdr = (void *)slot_data[0]->loaded_partitions->data; 598 599 /* 600 * populate boot_img_hdr_v34 601 * 602 * If allow verification error: the image is loaded by 603 * ops->get_preloaded_partition() which auto populates 604 * boot_img_hdr_v34. 605 * 606 * If not allow verification error: the image is full loaded 607 * by ops->read_from_partition() which doesn't populate 608 * boot_img_hdr_v34, we need to fix it here. 609 */ 610 if (hdr->header_version >= 3 && 611 !(flags & AVB_SLOT_VERIFY_FLAGS_ALLOW_VERIFICATION_ERROR)) { 612 struct andr_img_hdr *v3hdr; 613 struct blk_desc *dev_desc; 614 disk_partition_t part; 615 616 dev_desc = rockchip_get_bootdev(); 617 if (!dev_desc) 618 return -1; 619 620 if (part_get_info_by_name(dev_desc, 621 boot_partname, &part) < 0) 622 return -1; 623 624 v3hdr = populate_andr_img_hdr(dev_desc, &part); 625 if (v3hdr) { 626 memcpy(hdr, v3hdr, sizeof(*v3hdr)); 627 free(v3hdr); 628 } 629 } 630 631 /* Reserve page_size */ 632 load_address -= hdr->page_size; 633 if (android_image_memcpy_separate(hdr, &load_address)) { 634 printf("Failed to separate copy android image\n"); 635 return AVB_SLOT_VERIFY_RESULT_ERROR_IO; 636 } 637 *android_load_address = load_address; 638 } else { 639 slot_set_unbootable(&ab_data.slots[slot_index_to_boot]); 640 } 641 642 out: 643 env_update("bootargs", verify_state); 644 if (save_metadata_if_changed(ops->ab_ops, &ab_data, &ab_data_orig)) { 645 printf("Can not save metadata\n"); 646 verify_result = AVB_SLOT_VERIFY_RESULT_ERROR_IO; 647 } 648 649 if (slot_data[0] != NULL) 650 avb_slot_verify_data_free(slot_data[0]); 651 652 if ((unlocked & LOCK_MASK) && can_boot) 653 return 0; 654 else 655 return verify_result; 656 } 657 #endif 658 659 #if defined(CONFIG_CMD_DTIMG) && defined(CONFIG_OF_LIBFDT_OVERLAY) 660 661 /* 662 * Default return index 0. 663 */ 664 __weak int board_select_fdt_index(ulong dt_table_hdr) 665 { 666 /* 667 * User can use "dt_for_each_entry(entry, hdr, idx)" to iterate 668 * over all dt entry of DT image and pick up which they want. 669 * 670 * Example: 671 * struct dt_table_entry *entry; 672 * int index; 673 * 674 * dt_for_each_entry(entry, dt_table_hdr, index) { 675 * 676 * .... (use entry) 677 * } 678 * 679 * return index; 680 */ 681 return 0; 682 } 683 684 static int android_get_dtbo(ulong *fdt_dtbo, 685 const struct andr_img_hdr *hdr, 686 int *index, const char *part_dtbo) 687 { 688 struct dt_table_header *dt_hdr = NULL; 689 struct blk_desc *dev_desc; 690 disk_partition_t part_info; 691 u32 blk_offset, blk_cnt; 692 void *buf; 693 ulong e_addr; 694 u32 e_size; 695 int e_idx; 696 int ret; 697 698 /* Get partition info */ 699 dev_desc = rockchip_get_bootdev(); 700 if (!dev_desc) 701 return -ENODEV; 702 703 ret = part_get_info_by_name(dev_desc, part_dtbo, &part_info); 704 if (ret < 0) { 705 printf("No %s partition, ret=%d\n", part_dtbo, ret); 706 return ret; 707 } 708 709 /* Check dt table header */ 710 if (!strcmp(part_dtbo, PART_RECOVERY)) 711 blk_offset = part_info.start + 712 (hdr->recovery_dtbo_offset / part_info.blksz); 713 else 714 blk_offset = part_info.start; 715 716 dt_hdr = memalign(ARCH_DMA_MINALIGN, part_info.blksz); 717 if (!dt_hdr) 718 return -ENOMEM; 719 720 ret = blk_dread(dev_desc, blk_offset, 1, dt_hdr); 721 if (ret != 1) 722 goto out1; 723 724 if (!android_dt_check_header((ulong)dt_hdr)) { 725 printf("DTBO: invalid dt table header: 0x%x\n", dt_hdr->magic); 726 ret = -EINVAL; 727 goto out1; 728 } 729 730 #ifdef DEBUG 731 android_dt_print_contents((ulong)dt_hdr); 732 #endif 733 734 blk_cnt = DIV_ROUND_UP(fdt32_to_cpu(dt_hdr->total_size), 735 part_info.blksz); 736 /* Read all DT Image */ 737 buf = memalign(ARCH_DMA_MINALIGN, part_info.blksz * blk_cnt); 738 if (!buf) { 739 ret = -ENOMEM; 740 goto out1; 741 } 742 743 ret = blk_dread(dev_desc, blk_offset, blk_cnt, buf); 744 if (ret != blk_cnt) 745 goto out2; 746 747 e_idx = board_select_fdt_index((ulong)buf); 748 if (e_idx < 0) { 749 printf("%s: failed to select board fdt index\n", __func__); 750 ret = -EINVAL; 751 goto out2; 752 } 753 754 ret = android_dt_get_fdt_by_index((ulong)buf, e_idx, &e_addr, &e_size); 755 if (!ret) { 756 printf("%s: failed to get fdt, index=%d\n", __func__, e_idx); 757 ret = -EINVAL; 758 goto out2; 759 } 760 761 if (fdt_dtbo) 762 *fdt_dtbo = e_addr; 763 if (index) 764 *index = e_idx; 765 766 free(dt_hdr); 767 debug("ANDROID: Loading dt entry to 0x%lx size 0x%x idx %d from \"%s\" part\n", 768 e_addr, e_size, e_idx, part_dtbo); 769 770 return 0; 771 772 out2: 773 free(buf); 774 out1: 775 free(dt_hdr); 776 777 return ret; 778 } 779 780 int android_fdt_overlay_apply(void *fdt_addr) 781 { 782 struct andr_img_hdr *hdr; 783 struct blk_desc *dev_desc; 784 const char *part_boot = PART_BOOT; 785 disk_partition_t part_info; 786 char *fdt_backup; 787 char *part_dtbo = PART_DTBO; 788 char buf[32] = {0}; 789 ulong fdt_dtbo = -1; 790 u32 totalsize; 791 int index = -1; 792 int ret; 793 794 if (rockchip_get_boot_mode() == BOOT_MODE_RECOVERY) { 795 #ifdef CONFIG_ANDROID_AB 796 bool can_find_recovery; 797 798 can_find_recovery = ab_can_find_recovery_part(); 799 part_boot = can_find_recovery ? PART_RECOVERY : PART_BOOT; 800 part_dtbo = can_find_recovery ? PART_RECOVERY : PART_DTBO; 801 #else 802 part_boot = PART_RECOVERY; 803 part_dtbo = PART_RECOVERY; 804 #endif 805 } 806 807 dev_desc = rockchip_get_bootdev(); 808 if (!dev_desc) 809 return -ENODEV; 810 811 ret = part_get_info_by_name(dev_desc, part_boot, &part_info); 812 if (ret < 0) 813 return ret; 814 815 hdr = populate_andr_img_hdr(dev_desc, &part_info); 816 if (!hdr) 817 return -EINVAL; 818 #ifdef DEBUG 819 android_print_contents(hdr); 820 #endif 821 822 /* 823 * Google requires a/b system mandory from Android Header v3 for 824 * google authentication, that means there is not recovery. 825 * 826 * But for the products that don't care about google authentication, 827 * it's not mandory to use a/b system. So that we use the solution: 828 * boot.img(v3+) with recovery(v2). 829 * 830 * [recovery_dtbo fields] 831 * recovery.img with boot_img_hdr_v1,2: supported 832 * recovery.img with boot_img_hdr_v0,3+: illegal 833 */ 834 if ((hdr->header_version == 0) || 835 (hdr->header_version >= 3 && !strcmp(part_boot, PART_RECOVERY))) 836 goto out; 837 838 ret = android_get_dtbo(&fdt_dtbo, (void *)hdr, &index, part_dtbo); 839 if (!ret) { 840 phys_size_t fdt_size; 841 842 /* Must incease size before overlay */ 843 fdt_size = fdt_totalsize((void *)fdt_addr) + 844 fdt_totalsize((void *)fdt_dtbo); 845 if (sysmem_free((phys_addr_t)fdt_addr)) 846 goto out; 847 848 if (!sysmem_alloc_base(MEM_FDT_DTBO, 849 (phys_addr_t)fdt_addr, 850 fdt_size + CONFIG_SYS_FDT_PAD)) 851 goto out; 852 /* 853 * Backup main fdt in case of being destroyed by 854 * fdt_overlay_apply() when it overlys failed. 855 */ 856 totalsize = fdt_totalsize(fdt_addr); 857 fdt_backup = malloc(totalsize); 858 if (!fdt_backup) 859 goto out; 860 861 memcpy(fdt_backup, fdt_addr, totalsize); 862 fdt_increase_size(fdt_addr, fdt_totalsize((void *)fdt_dtbo)); 863 ret = fdt_overlay_apply(fdt_addr, (void *)fdt_dtbo); 864 if (!ret) { 865 snprintf(buf, 32, "%s%d", "androidboot.dtbo_idx=", index); 866 env_update("bootargs", buf); 867 printf("ANDROID: fdt overlay OK\n"); 868 } else { 869 memcpy(fdt_addr, fdt_backup, totalsize); 870 printf("ANDROID: fdt overlay failed, ret=%d\n", ret); 871 } 872 873 free(fdt_backup); 874 } 875 876 out: 877 free(hdr); 878 879 return 0; 880 } 881 #endif 882 883 int android_image_load_by_partname(struct blk_desc *dev_desc, 884 const char *boot_partname, 885 unsigned long *load_address) 886 { 887 disk_partition_t boot_part; 888 int ret, part_num; 889 890 part_num = part_get_info_by_name(dev_desc, boot_partname, &boot_part); 891 if (part_num < 0) { 892 printf("%s: Can't find part: %s\n", __func__, boot_partname); 893 return -1; 894 } 895 debug("ANDROID: Loading kernel from \"%s\", partition %d.\n", 896 boot_part.name, part_num); 897 898 ret = android_image_load(dev_desc, &boot_part, *load_address, -1UL); 899 if (ret < 0) { 900 debug("%s: %s part load fail, ret=%d\n", 901 __func__, boot_part.name, ret); 902 return ret; 903 } 904 *load_address = ret; 905 906 return 0; 907 } 908 909 int android_bootloader_boot_flow(struct blk_desc *dev_desc, 910 unsigned long load_address) 911 { 912 enum android_boot_mode mode = ANDROID_BOOT_MODE_NORMAL; 913 disk_partition_t misc_part_info; 914 int part_num; 915 char *command_line; 916 char slot_suffix[3] = {0}; 917 const char *mode_cmdline = NULL; 918 char *boot_partname = ANDROID_PARTITION_BOOT; 919 920 /* 921 * 1. Load MISC partition and determine the boot mode 922 * clear its value for the next boot if needed. 923 */ 924 part_num = part_get_info_by_name(dev_desc, ANDROID_PARTITION_MISC, 925 &misc_part_info); 926 if (part_num < 0) { 927 printf("Could not find misc partition\n"); 928 } else { 929 #ifdef CONFIG_ANDROID_KEYMASTER_CA 930 /* load attestation key from misc partition. */ 931 load_attestation_key(dev_desc, &misc_part_info); 932 #endif 933 934 mode = android_bootloader_load_and_clear_mode(dev_desc, 935 &misc_part_info); 936 #ifdef CONFIG_RKIMG_BOOTLOADER 937 if (mode == ANDROID_BOOT_MODE_NORMAL) { 938 if (rockchip_get_boot_mode() == BOOT_MODE_RECOVERY) 939 mode = ANDROID_BOOT_MODE_RECOVERY; 940 } 941 #endif 942 } 943 944 printf("ANDROID: reboot reason: \"%s\"\n", android_boot_mode_str(mode)); 945 #ifdef CONFIG_ANDROID_AB 946 /* Get current slot_suffix */ 947 if (ab_get_slot_suffix(slot_suffix)) 948 return -1; 949 #endif 950 switch (mode) { 951 case ANDROID_BOOT_MODE_NORMAL: 952 /* In normal mode, we load the kernel from "boot" but append 953 * "skip_initramfs" to the cmdline to make it ignore the 954 * recovery initramfs in the boot partition. 955 */ 956 #ifdef CONFIG_ANDROID_AB 957 /* In A/B, the recovery image is built as boot.img, containing the 958 * recovery's ramdisk. Previously, bootloader used the skip_initramfs 959 * kernel command line parameter to decide which mode to boot into. 960 * For Android >=10 and with dynamic partition support, the bootloader 961 * MUST NOT pass skip_initramfs to the kernel command-line. 962 * Instead, bootloader should pass androidboot.force_normal_boot=1 963 * and then Android's first-stage init in ramdisk 964 * will skip recovery and boot normal Android. 965 */ 966 if (ab_is_support_dynamic_partition(dev_desc)) { 967 mode_cmdline = "androidboot.force_normal_boot=1"; 968 } else { 969 mode_cmdline = "skip_initramfs"; 970 } 971 #endif 972 break; 973 case ANDROID_BOOT_MODE_RECOVERY: 974 /* 975 * In recovery mode, if have recovery partition, we still boot the 976 * kernel from "recovery". If not, don't skip the initramfs so it 977 * boots to recovery from image in partition "boot". 978 */ 979 #ifdef CONFIG_ANDROID_AB 980 boot_partname = ab_can_find_recovery_part() ? 981 ANDROID_PARTITION_RECOVERY : ANDROID_PARTITION_BOOT; 982 #else 983 boot_partname = ANDROID_PARTITION_RECOVERY; 984 #endif 985 break; 986 case ANDROID_BOOT_MODE_BOOTLOADER: 987 /* Bootloader mode enters fastboot. If this operation fails we 988 * simply return since we can't recover from this situation by 989 * switching to another slot. 990 */ 991 return android_bootloader_boot_bootloader(); 992 } 993 994 #ifdef CONFIG_ANDROID_AVB 995 uint8_t vboot_flag = 0; 996 disk_partition_t vbmeta_part_info; 997 998 #ifdef CONFIG_OPTEE_CLIENT 999 if (trusty_read_vbootkey_enable_flag(&vboot_flag)) { 1000 printf("Can't read vboot flag\n"); 1001 return -1; 1002 } 1003 #endif 1004 if (vboot_flag) { 1005 printf("Vboot=1, SecureBoot enabled, AVB verify\n"); 1006 if (android_slot_verify(boot_partname, &load_address, 1007 slot_suffix)) { 1008 printf("AVB verify failed\n"); 1009 1010 return -1; 1011 } 1012 } else { 1013 part_num = part_get_info_by_name(dev_desc, 1014 ANDROID_PARTITION_VBMETA, 1015 &vbmeta_part_info); 1016 if (part_num < 0) { 1017 printf("Not AVB images, AVB skip\n"); 1018 env_update("bootargs", 1019 "androidboot.verifiedbootstate=orange"); 1020 if (android_image_load_by_partname(dev_desc, 1021 boot_partname, 1022 &load_address)) { 1023 printf("Android image load failed\n"); 1024 return -1; 1025 } 1026 } else { 1027 printf("Vboot=0, AVB images, AVB verify\n"); 1028 if (android_slot_verify(boot_partname, &load_address, 1029 slot_suffix)) { 1030 printf("AVB verify failed\n"); 1031 1032 return -1; 1033 } 1034 } 1035 } 1036 #else 1037 /* 1038 * 2. Load the boot/recovery from the desired "boot" partition. 1039 * Determine if this is an AOSP image. 1040 */ 1041 if (android_image_load_by_partname(dev_desc, 1042 boot_partname, 1043 &load_address)) { 1044 printf("Android image load failed\n"); 1045 return -1; 1046 } 1047 #endif 1048 1049 #ifdef CONFIG_ANDROID_AB 1050 ab_update_root_uuid(); 1051 #endif 1052 1053 /* Set Android root variables. */ 1054 env_set_ulong("android_root_devnum", dev_desc->devnum); 1055 env_set("android_slotsufix", slot_suffix); 1056 1057 #ifdef CONFIG_FASTBOOT_OEM_UNLOCK 1058 /* read oem unlock status and attach to bootargs */ 1059 uint8_t unlock = 0; 1060 TEEC_Result result; 1061 char oem_unlock[OEM_UNLOCK_ARG_SIZE] = {0}; 1062 result = trusty_read_oem_unlock(&unlock); 1063 if (result) { 1064 printf("read oem unlock status with error : 0x%x\n", result); 1065 } else { 1066 snprintf(oem_unlock, OEM_UNLOCK_ARG_SIZE, "androidboot.oem_unlocked=%d", unlock); 1067 env_update("bootargs", oem_unlock); 1068 } 1069 #endif 1070 1071 /* Assemble the command line */ 1072 command_line = android_assemble_cmdline(slot_suffix, mode_cmdline); 1073 env_update("bootargs", command_line); 1074 1075 debug("ANDROID: bootargs: \"%s\"\n", command_line); 1076 1077 #ifdef CONFIG_SUPPORT_OEM_DTB 1078 if (android_bootloader_get_fdt(ANDROID_PARTITION_OEM, 1079 ANDROID_ARG_FDT_FILENAME)) { 1080 printf("Can not get the fdt data from oem!\n"); 1081 } 1082 #endif 1083 #ifdef CONFIG_OPTEE_CLIENT 1084 if (trusty_notify_optee_uboot_end()) 1085 printf("Close optee client failed!\n"); 1086 #endif 1087 1088 #ifdef CONFIG_AMP 1089 return android_bootloader_boot_kernel(load_address); 1090 #else 1091 android_bootloader_boot_kernel(load_address); 1092 1093 /* TODO: If the kernel doesn't boot mark the selected slot as bad. */ 1094 return -1; 1095 #endif 1096 } 1097 1098 int android_avb_boot_flow(unsigned long kernel_address) 1099 { 1100 struct blk_desc *dev_desc; 1101 disk_partition_t boot_part_info; 1102 int ret; 1103 1104 dev_desc = rockchip_get_bootdev(); 1105 if (!dev_desc) { 1106 printf("%s: dev_desc is NULL!\n", __func__); 1107 return -1; 1108 } 1109 1110 /* Load the kernel from the desired "boot" partition. */ 1111 ret = part_get_info_by_name(dev_desc, ANDROID_PARTITION_BOOT, 1112 &boot_part_info); 1113 if (ret < 0) { 1114 printf("%s: failed to get boot part\n", __func__); 1115 return ret; 1116 } 1117 1118 ret = android_image_load(dev_desc, &boot_part_info, 1119 kernel_address, -1UL); 1120 if (ret < 0) { 1121 printf("Android avb boot failed, error %d.\n", ret); 1122 return ret; 1123 } 1124 1125 android_bootloader_boot_kernel(kernel_address); 1126 1127 /* TODO: If the kernel doesn't boot mark the selected slot as bad. */ 1128 return -1; 1129 } 1130 1131 int android_boot_flow(unsigned long kernel_address) 1132 { 1133 struct blk_desc *dev_desc; 1134 disk_partition_t boot_part_info; 1135 int ret; 1136 1137 dev_desc = rockchip_get_bootdev(); 1138 if (!dev_desc) { 1139 printf("%s: dev_desc is NULL!\n", __func__); 1140 return -1; 1141 } 1142 /* Load the kernel from the desired "boot" partition. */ 1143 ret = part_get_info_by_name(dev_desc, ANDROID_PARTITION_BOOT, 1144 &boot_part_info); 1145 if (ret < 0) { 1146 printf("%s: failed to get boot part\n", __func__); 1147 return ret; 1148 } 1149 1150 ret = android_image_load(dev_desc, &boot_part_info, kernel_address, 1151 -1UL); 1152 if (ret < 0) 1153 return ret; 1154 1155 android_bootloader_boot_kernel(kernel_address); 1156 1157 /* TODO: If the kernel doesn't boot mark the selected slot as bad. */ 1158 return -1; 1159 } 1160