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 char *join_str(const char *a, const char *b) 466 { 467 size_t len = strlen(a) + strlen(b) + 1 /* null term */; 468 char *ret = (char *)malloc(len); 469 470 if (!ret) { 471 debug("failed to alloc %zu\n", len); 472 return NULL; 473 } 474 strcpy(ret, a); 475 strcat(ret, b); 476 477 return ret; 478 } 479 480 static size_t get_partition_size(AvbOps *ops, char *name, 481 const char *slot_suffix) 482 { 483 char *partition_name = join_str(name, slot_suffix); 484 uint64_t size = 0; 485 AvbIOResult res; 486 487 if (partition_name == NULL) 488 goto bail; 489 490 res = ops->get_size_of_partition(ops, partition_name, &size); 491 if (res != AVB_IO_RESULT_OK && res != AVB_IO_RESULT_ERROR_NO_SUCH_PARTITION) 492 size = 0; 493 bail: 494 if (partition_name) 495 free(partition_name); 496 497 return size; 498 } 499 500 static int avb_image_distribute_prepare(AvbSlotVerifyData *slot_data, 501 AvbOps *ops, char *slot_suffix) 502 { 503 struct AvbOpsData *data = (struct AvbOpsData *)(ops->user_data); 504 size_t vendor_boot_size; 505 size_t init_boot_size; 506 size_t boot_size; 507 void *image_buf; 508 509 boot_size = max(get_partition_size(ops, ANDROID_PARTITION_BOOT, slot_suffix), 510 get_partition_size(ops, ANDROID_PARTITION_RECOVERY, slot_suffix)); 511 init_boot_size = get_partition_size(ops, 512 ANDROID_PARTITION_INIT_BOOT, slot_suffix); 513 vendor_boot_size = get_partition_size(ops, 514 ANDROID_PARTITION_VENDOR_BOOT, slot_suffix); 515 image_buf = sysmem_alloc(MEM_AVB_ANDROID, 516 boot_size + init_boot_size + vendor_boot_size); 517 if (!image_buf) { 518 printf("avb: sysmem alloc failed\n"); 519 return -1; 520 } 521 522 data = (struct AvbOpsData *)(ops->user_data); 523 data->slot_suffix = slot_suffix; 524 data->boot.addr = image_buf; 525 data->boot.size = 0; 526 data->vendor_boot.addr = data->boot.addr + boot_size; 527 data->vendor_boot.size = 0; 528 data->init_boot.addr = data->vendor_boot.addr + vendor_boot_size; 529 data->init_boot.size = 0; 530 531 return 0; 532 } 533 534 static int avb_image_distribute_finish(AvbSlotVerifyData *slot_data, 535 AvbSlotVerifyFlags flags, 536 ulong *load_address) 537 { 538 struct andr_img_hdr *hdr; 539 ulong load_addr = *load_address; 540 void *vendor_boot_hdr = NULL; 541 void *init_boot_hdr = NULL; 542 void *boot_hdr = NULL; 543 char *part_name; 544 int i, ret; 545 546 for (i = 0; i < slot_data->num_loaded_partitions; i++) { 547 part_name = slot_data->loaded_partitions[i].partition_name; 548 if (!strncmp(ANDROID_PARTITION_BOOT, part_name, 4) || 549 !strncmp(ANDROID_PARTITION_RECOVERY, part_name, 8)) { 550 boot_hdr = slot_data->loaded_partitions[i].data; 551 } else if (!strncmp(ANDROID_PARTITION_INIT_BOOT, part_name, 9)) { 552 init_boot_hdr = slot_data->loaded_partitions[i].data; 553 } else if (!strncmp(ANDROID_PARTITION_VENDOR_BOOT, part_name, 11)) { 554 vendor_boot_hdr = slot_data->loaded_partitions[i].data; 555 } 556 } 557 558 /* 559 * populate boot_img_hdr_v34 560 * 561 * If allow verification error: the images are loaded by 562 * ops->get_preloaded_partition() which auto populates 563 * boot_img_hdr_v34. 564 * 565 * If not allow verification error: the images are full loaded 566 * by ops->read_from_partition() which doesn't populate 567 * boot_img_hdr_v34, we need to fix it here for bootm and 568 */ 569 570 hdr = boot_hdr; 571 if (hdr->header_version >= 3 && 572 !(flags & AVB_SLOT_VERIFY_FLAGS_ALLOW_VERIFICATION_ERROR)) { 573 hdr = malloc(sizeof(struct andr_img_hdr)); 574 if (!hdr) 575 return -1; 576 577 ret = populate_boot_info(boot_hdr, vendor_boot_hdr, 578 init_boot_hdr, hdr, true); 579 if (ret < 0) { 580 printf("avb: populate boot info failed, ret=%d\n", ret); 581 return -1; 582 } 583 memcpy(boot_hdr, hdr, sizeof(*hdr)); 584 } 585 586 /* distribute ! */ 587 load_addr -= hdr->page_size; 588 if (android_image_memcpy_separate(boot_hdr, &load_addr)) { 589 printf("Failed to separate copy android image\n"); 590 return AVB_SLOT_VERIFY_RESULT_ERROR_IO; 591 } 592 593 *load_address = load_addr; 594 595 return 0; 596 } 597 598 /* 599 * AVB Policy. 600 * 601 * == avb with unlock: 602 * Don't process hash verify. 603 * Go pre-loaded path: Loading vendor_boot and init_boot 604 * directly to where they should be, while loading the 605 * boot/recovery. The boot message tells like: 606 * ··· 607 * preloaded: distribute image from 'boot_a' 608 * preloaded: distribute image from 'init_boot_a' 609 * preloaded: distribute image from 'vendor_boot_a' 610 * ··· 611 * 612 * == avb with lock: 613 * Process hash verify. 614 * Go pre-loaded path: Loading full vendor_boot, init_boot and 615 * boot/recovery one by one to verify, and distributing them to 616 * where they should be by memcpy at last. 617 * 618 * The three images share a large memory buffer that allocated 619 * by sysmem_alloc(), it locate at high memory address that 620 * just lower than SP bottom. The boot message tells like: 621 * ··· 622 * preloaded: full image from 'boot_a' at 0xe47f90c0 - 0xe7a4b0c0 623 * preloaded: full image from 'init_boot_a' at 0xeaff90c0 - 0xeb2950c0 624 * preloaded: full image from 'vendor_boot_a' at 0xe87f90c0 - 0xe9f6e0c0 625 * ··· 626 */ 627 static AvbSlotVerifyResult android_slot_verify(char *boot_partname, 628 unsigned long *android_load_address, 629 char *slot_suffix) 630 { 631 const char *requested_partitions[] = { 632 boot_partname, 633 NULL, 634 NULL, 635 NULL, 636 }; 637 struct blk_desc *dev_desc; 638 struct andr_img_hdr *hdr; 639 disk_partition_t part_info; 640 uint8_t unlocked = true; 641 AvbOps *ops; 642 AvbSlotVerifyFlags flags; 643 AvbSlotVerifyData *slot_data = {NULL}; 644 AvbSlotVerifyResult verify_result; 645 AvbABData ab_data, ab_data_orig; 646 size_t slot_index_to_boot = 0; 647 char verify_state[38] = {0}; 648 char can_boot = 1; 649 char retry_no_vbmeta_partition = 1; 650 unsigned long load_address = *android_load_address; 651 int ret; 652 653 dev_desc = rockchip_get_bootdev(); 654 if (!dev_desc) 655 return AVB_IO_RESULT_ERROR_IO; 656 657 if (part_get_info_by_name(dev_desc, boot_partname, &part_info) < 0) { 658 printf("Could not find \"%s\" partition\n", boot_partname); 659 return AVB_IO_RESULT_ERROR_NO_SUCH_PARTITION; 660 } 661 662 hdr = populate_andr_img_hdr(dev_desc, &part_info); 663 if (!hdr) { 664 printf("No valid android hdr\n"); 665 return -1; 666 } 667 668 if (hdr->header_version >= 4) { 669 requested_partitions[1] = ANDROID_PARTITION_VENDOR_BOOT; 670 if (((hdr->os_version >> 25) & 0x7f) >= 13) 671 requested_partitions[2] = ANDROID_PARTITION_INIT_BOOT; 672 } 673 674 ops = avb_ops_user_new(); 675 if (ops == NULL) { 676 printf("avb_ops_user_new() failed!\n"); 677 return AVB_SLOT_VERIFY_RESULT_ERROR_OOM; 678 } 679 680 if (ops->read_is_device_unlocked(ops, (bool *)&unlocked) != AVB_IO_RESULT_OK) 681 printf("Error determining whether device is unlocked.\n"); 682 683 printf("read_is_device_unlocked() ops returned that device is %s\n", 684 (unlocked & LOCK_MASK)? "UNLOCKED" : "LOCKED"); 685 686 flags = AVB_SLOT_VERIFY_FLAGS_NONE; 687 if (unlocked & LOCK_MASK) 688 flags |= AVB_SLOT_VERIFY_FLAGS_ALLOW_VERIFICATION_ERROR; 689 690 if (load_metadata(ops->ab_ops, &ab_data, &ab_data_orig)) { 691 printf("Can not load metadata\n"); 692 return AVB_SLOT_VERIFY_RESULT_ERROR_IO; 693 } 694 695 if (!strncmp(slot_suffix, "_a", 2)) 696 slot_index_to_boot = 0; 697 else if (!strncmp(slot_suffix, "_b", 2)) 698 slot_index_to_boot = 1; 699 else 700 slot_index_to_boot = 0; 701 702 if (strcmp(boot_partname, ANDROID_PARTITION_RECOVERY) == 0) 703 flags |= AVB_SLOT_VERIFY_FLAGS_NO_VBMETA_PARTITION; 704 705 /* prepare image buffer */ 706 ret = avb_image_distribute_prepare(slot_data, ops, slot_suffix); 707 if (ret < 0) { 708 printf("avb image distribute prepare failed %d\n", ret); 709 return -1; 710 } 711 712 retry_verify: 713 verify_result = 714 avb_slot_verify(ops, 715 requested_partitions, 716 slot_suffix, 717 flags, 718 AVB_HASHTREE_ERROR_MODE_RESTART, 719 &slot_data); 720 if (verify_result != AVB_SLOT_VERIFY_RESULT_OK && 721 verify_result != AVB_SLOT_VERIFY_RESULT_ERROR_PUBLIC_KEY_REJECTED) { 722 if (retry_no_vbmeta_partition && strcmp(boot_partname, ANDROID_PARTITION_RECOVERY) == 0) { 723 printf("Verify recovery with vbmeta.\n"); 724 flags &= ~AVB_SLOT_VERIFY_FLAGS_NO_VBMETA_PARTITION; 725 retry_no_vbmeta_partition = 0; 726 goto retry_verify; 727 } 728 } 729 730 strcat(verify_state, ANDROID_VERIFY_STATE); 731 switch (verify_result) { 732 case AVB_SLOT_VERIFY_RESULT_OK: 733 if (unlocked & LOCK_MASK) 734 strcat(verify_state, "orange"); 735 else 736 strcat(verify_state, "green"); 737 break; 738 case AVB_SLOT_VERIFY_RESULT_ERROR_PUBLIC_KEY_REJECTED: 739 if (unlocked & LOCK_MASK) 740 strcat(verify_state, "orange"); 741 else 742 strcat(verify_state, "yellow"); 743 break; 744 case AVB_SLOT_VERIFY_RESULT_ERROR_OOM: 745 case AVB_SLOT_VERIFY_RESULT_ERROR_IO: 746 case AVB_SLOT_VERIFY_RESULT_ERROR_INVALID_METADATA: 747 case AVB_SLOT_VERIFY_RESULT_ERROR_UNSUPPORTED_VERSION: 748 case AVB_SLOT_VERIFY_RESULT_ERROR_VERIFICATION: 749 case AVB_SLOT_VERIFY_RESULT_ERROR_ROLLBACK_INDEX: 750 default: 751 if (unlocked & LOCK_MASK) 752 strcat(verify_state, "orange"); 753 else 754 strcat(verify_state, "red"); 755 break; 756 } 757 758 if (!slot_data) { 759 can_boot = 0; 760 goto out; 761 } 762 763 if (verify_result == AVB_SLOT_VERIFY_RESULT_OK || 764 verify_result == AVB_SLOT_VERIFY_RESULT_ERROR_PUBLIC_KEY_REJECTED || 765 (unlocked & LOCK_MASK)) { 766 int len = 0; 767 char *bootargs, *newbootargs; 768 #ifdef CONFIG_ANDROID_AVB_ROLLBACK_INDEX 769 if (rk_avb_update_stored_rollback_indexes_for_slot(ops, slot_data)) 770 printf("Fail to update the rollback indexes.\n"); 771 #endif 772 if (slot_data->cmdline) { 773 debug("Kernel command line: %s\n", slot_data->cmdline); 774 len += strlen(slot_data->cmdline); 775 } 776 777 bootargs = env_get("bootargs"); 778 if (bootargs) 779 len += strlen(bootargs); 780 781 newbootargs = malloc(len + 2); 782 783 if (!newbootargs) { 784 puts("Error: malloc in android_slot_verify failed!\n"); 785 return AVB_SLOT_VERIFY_RESULT_ERROR_OOM; 786 } 787 *newbootargs = '\0'; 788 789 if (bootargs) { 790 strcpy(newbootargs, bootargs); 791 strcat(newbootargs, " "); 792 } 793 if (slot_data->cmdline) 794 strcat(newbootargs, slot_data->cmdline); 795 env_set("bootargs", newbootargs); 796 797 /* if need, distribute full image to where they should be */ 798 ret = avb_image_distribute_finish(slot_data, flags, &load_address); 799 if (ret < 0) { 800 printf("avb image distribute finish failed %d\n", ret); 801 return -1; 802 } 803 *android_load_address = load_address; 804 } else { 805 slot_set_unbootable(&ab_data.slots[slot_index_to_boot]); 806 } 807 808 out: 809 env_update("bootargs", verify_state); 810 if (save_metadata_if_changed(ops->ab_ops, &ab_data, &ab_data_orig)) { 811 printf("Can not save metadata\n"); 812 verify_result = AVB_SLOT_VERIFY_RESULT_ERROR_IO; 813 } 814 815 if (slot_data != NULL) 816 avb_slot_verify_data_free(slot_data); 817 818 if ((unlocked & LOCK_MASK) && can_boot) 819 return 0; 820 else 821 return verify_result; 822 } 823 #endif 824 825 #if defined(CONFIG_CMD_DTIMG) && defined(CONFIG_OF_LIBFDT_OVERLAY) 826 827 /* 828 * Default return index 0. 829 */ 830 __weak int board_select_fdt_index(ulong dt_table_hdr) 831 { 832 /* 833 * User can use "dt_for_each_entry(entry, hdr, idx)" to iterate 834 * over all dt entry of DT image and pick up which they want. 835 * 836 * Example: 837 * struct dt_table_entry *entry; 838 * int index; 839 * 840 * dt_for_each_entry(entry, dt_table_hdr, index) { 841 * 842 * .... (use entry) 843 * } 844 * 845 * return index; 846 */ 847 return 0; 848 } 849 850 static int android_get_dtbo(ulong *fdt_dtbo, 851 const struct andr_img_hdr *hdr, 852 int *index, const char *part_dtbo) 853 { 854 struct dt_table_header *dt_hdr = NULL; 855 struct blk_desc *dev_desc; 856 disk_partition_t part_info; 857 u32 blk_offset, blk_cnt; 858 void *buf; 859 ulong e_addr; 860 u32 e_size; 861 int e_idx; 862 int ret; 863 864 /* Get partition info */ 865 dev_desc = rockchip_get_bootdev(); 866 if (!dev_desc) 867 return -ENODEV; 868 869 ret = part_get_info_by_name(dev_desc, part_dtbo, &part_info); 870 if (ret < 0) { 871 printf("No %s partition, ret=%d\n", part_dtbo, ret); 872 return ret; 873 } 874 875 /* Check dt table header */ 876 if (!strcmp(part_dtbo, PART_RECOVERY)) 877 blk_offset = part_info.start + 878 (hdr->recovery_dtbo_offset / part_info.blksz); 879 else 880 blk_offset = part_info.start; 881 882 dt_hdr = memalign(ARCH_DMA_MINALIGN, part_info.blksz); 883 if (!dt_hdr) 884 return -ENOMEM; 885 886 ret = blk_dread(dev_desc, blk_offset, 1, dt_hdr); 887 if (ret != 1) 888 goto out1; 889 890 if (!android_dt_check_header((ulong)dt_hdr)) { 891 printf("DTBO: invalid dt table header: 0x%x\n", dt_hdr->magic); 892 ret = -EINVAL; 893 goto out1; 894 } 895 896 #ifdef DEBUG 897 android_dt_print_contents((ulong)dt_hdr); 898 #endif 899 900 blk_cnt = DIV_ROUND_UP(fdt32_to_cpu(dt_hdr->total_size), 901 part_info.blksz); 902 /* Read all DT Image */ 903 buf = memalign(ARCH_DMA_MINALIGN, part_info.blksz * blk_cnt); 904 if (!buf) { 905 ret = -ENOMEM; 906 goto out1; 907 } 908 909 ret = blk_dread(dev_desc, blk_offset, blk_cnt, buf); 910 if (ret != blk_cnt) 911 goto out2; 912 913 e_idx = board_select_fdt_index((ulong)buf); 914 if (e_idx < 0) { 915 printf("%s: failed to select board fdt index\n", __func__); 916 ret = -EINVAL; 917 goto out2; 918 } 919 920 ret = android_dt_get_fdt_by_index((ulong)buf, e_idx, &e_addr, &e_size); 921 if (!ret) { 922 printf("%s: failed to get fdt, index=%d\n", __func__, e_idx); 923 ret = -EINVAL; 924 goto out2; 925 } 926 927 if (fdt_dtbo) 928 *fdt_dtbo = e_addr; 929 if (index) 930 *index = e_idx; 931 932 free(dt_hdr); 933 debug("ANDROID: Loading dt entry to 0x%lx size 0x%x idx %d from \"%s\" part\n", 934 e_addr, e_size, e_idx, part_dtbo); 935 936 return 0; 937 938 out2: 939 free(buf); 940 out1: 941 free(dt_hdr); 942 943 return ret; 944 } 945 946 int android_fdt_overlay_apply(void *fdt_addr) 947 { 948 struct andr_img_hdr *hdr; 949 struct blk_desc *dev_desc; 950 const char *part_boot = PART_BOOT; 951 disk_partition_t part_info; 952 char *fdt_backup; 953 char *part_dtbo = PART_DTBO; 954 char buf[32] = {0}; 955 ulong fdt_dtbo = -1; 956 u32 totalsize; 957 int index = -1; 958 int ret; 959 960 if (rockchip_get_boot_mode() == BOOT_MODE_RECOVERY) { 961 #ifdef CONFIG_ANDROID_AB 962 bool can_find_recovery; 963 964 can_find_recovery = ab_can_find_recovery_part(); 965 part_boot = can_find_recovery ? PART_RECOVERY : PART_BOOT; 966 part_dtbo = can_find_recovery ? PART_RECOVERY : PART_DTBO; 967 #else 968 part_boot = PART_RECOVERY; 969 part_dtbo = PART_RECOVERY; 970 #endif 971 } 972 973 dev_desc = rockchip_get_bootdev(); 974 if (!dev_desc) 975 return -ENODEV; 976 977 ret = part_get_info_by_name(dev_desc, part_boot, &part_info); 978 if (ret < 0) 979 return ret; 980 981 hdr = populate_andr_img_hdr(dev_desc, &part_info); 982 if (!hdr) 983 return -EINVAL; 984 #ifdef DEBUG 985 android_print_contents(hdr); 986 #endif 987 988 /* 989 * Google requires a/b system mandory from Android Header v3 for 990 * google authentication, that means there is not recovery. 991 * 992 * But for the products that don't care about google authentication, 993 * it's not mandory to use a/b system. So that we use the solution: 994 * boot.img(v3+) with recovery(v2). 995 * 996 * [recovery_dtbo fields] 997 * recovery.img with boot_img_hdr_v1,2: supported 998 * recovery.img with boot_img_hdr_v0,3+: illegal 999 */ 1000 if ((hdr->header_version == 0) || 1001 (hdr->header_version >= 3 && !strcmp(part_boot, PART_RECOVERY))) 1002 goto out; 1003 1004 ret = android_get_dtbo(&fdt_dtbo, (void *)hdr, &index, part_dtbo); 1005 if (!ret) { 1006 phys_size_t fdt_size; 1007 1008 /* Must incease size before overlay */ 1009 fdt_size = fdt_totalsize((void *)fdt_addr) + 1010 fdt_totalsize((void *)fdt_dtbo); 1011 if (sysmem_free((phys_addr_t)fdt_addr)) 1012 goto out; 1013 1014 if (!sysmem_alloc_base(MEM_FDT_DTBO, 1015 (phys_addr_t)fdt_addr, 1016 fdt_size + CONFIG_SYS_FDT_PAD)) 1017 goto out; 1018 /* 1019 * Backup main fdt in case of being destroyed by 1020 * fdt_overlay_apply() when it overlys failed. 1021 */ 1022 totalsize = fdt_totalsize(fdt_addr); 1023 fdt_backup = malloc(totalsize); 1024 if (!fdt_backup) 1025 goto out; 1026 1027 memcpy(fdt_backup, fdt_addr, totalsize); 1028 fdt_increase_size(fdt_addr, fdt_totalsize((void *)fdt_dtbo)); 1029 ret = fdt_overlay_apply(fdt_addr, (void *)fdt_dtbo); 1030 if (!ret) { 1031 snprintf(buf, 32, "%s%d", "androidboot.dtbo_idx=", index); 1032 env_update("bootargs", buf); 1033 printf("ANDROID: fdt overlay OK\n"); 1034 } else { 1035 memcpy(fdt_addr, fdt_backup, totalsize); 1036 printf("ANDROID: fdt overlay failed, ret=%d\n", ret); 1037 } 1038 1039 free(fdt_backup); 1040 } 1041 1042 out: 1043 free(hdr); 1044 1045 return 0; 1046 } 1047 #endif 1048 1049 int android_image_load_by_partname(struct blk_desc *dev_desc, 1050 const char *boot_partname, 1051 unsigned long *load_address) 1052 { 1053 disk_partition_t boot_part; 1054 int ret, part_num; 1055 1056 part_num = part_get_info_by_name(dev_desc, boot_partname, &boot_part); 1057 if (part_num < 0) { 1058 printf("%s: Can't find part: %s\n", __func__, boot_partname); 1059 return -1; 1060 } 1061 debug("ANDROID: Loading kernel from \"%s\", partition %d.\n", 1062 boot_part.name, part_num); 1063 1064 ret = android_image_load(dev_desc, &boot_part, *load_address, -1UL); 1065 if (ret < 0) { 1066 debug("%s: %s part load fail, ret=%d\n", 1067 __func__, boot_part.name, ret); 1068 return ret; 1069 } 1070 *load_address = ret; 1071 1072 return 0; 1073 } 1074 1075 int android_bootloader_boot_flow(struct blk_desc *dev_desc, 1076 unsigned long load_address) 1077 { 1078 enum android_boot_mode mode = ANDROID_BOOT_MODE_NORMAL; 1079 disk_partition_t misc_part_info; 1080 int part_num; 1081 char *command_line; 1082 char slot_suffix[3] = {0}; 1083 const char *mode_cmdline = NULL; 1084 char *boot_partname = ANDROID_PARTITION_BOOT; 1085 1086 /* 1087 * 1. Load MISC partition and determine the boot mode 1088 * clear its value for the next boot if needed. 1089 */ 1090 part_num = part_get_info_by_name(dev_desc, ANDROID_PARTITION_MISC, 1091 &misc_part_info); 1092 if (part_num < 0) { 1093 printf("Could not find misc partition\n"); 1094 } else { 1095 #ifdef CONFIG_ANDROID_KEYMASTER_CA 1096 /* load attestation key from misc partition. */ 1097 load_attestation_key(dev_desc, &misc_part_info); 1098 #endif 1099 1100 mode = android_bootloader_load_and_clear_mode(dev_desc, 1101 &misc_part_info); 1102 #ifdef CONFIG_RKIMG_BOOTLOADER 1103 if (mode == ANDROID_BOOT_MODE_NORMAL) { 1104 if (rockchip_get_boot_mode() == BOOT_MODE_RECOVERY) 1105 mode = ANDROID_BOOT_MODE_RECOVERY; 1106 } 1107 #endif 1108 } 1109 1110 printf("ANDROID: reboot reason: \"%s\"\n", android_boot_mode_str(mode)); 1111 #ifdef CONFIG_ANDROID_AB 1112 /* Get current slot_suffix */ 1113 if (ab_get_slot_suffix(slot_suffix)) 1114 return -1; 1115 #endif 1116 switch (mode) { 1117 case ANDROID_BOOT_MODE_NORMAL: 1118 /* In normal mode, we load the kernel from "boot" but append 1119 * "skip_initramfs" to the cmdline to make it ignore the 1120 * recovery initramfs in the boot partition. 1121 */ 1122 #ifdef CONFIG_ANDROID_AB 1123 /* In A/B, the recovery image is built as boot.img, containing the 1124 * recovery's ramdisk. Previously, bootloader used the skip_initramfs 1125 * kernel command line parameter to decide which mode to boot into. 1126 * For Android >=10 and with dynamic partition support, the bootloader 1127 * MUST NOT pass skip_initramfs to the kernel command-line. 1128 * Instead, bootloader should pass androidboot.force_normal_boot=1 1129 * and then Android's first-stage init in ramdisk 1130 * will skip recovery and boot normal Android. 1131 */ 1132 if (ab_is_support_dynamic_partition(dev_desc)) { 1133 mode_cmdline = "androidboot.force_normal_boot=1"; 1134 } else { 1135 mode_cmdline = "skip_initramfs"; 1136 } 1137 #endif 1138 break; 1139 case ANDROID_BOOT_MODE_RECOVERY: 1140 /* 1141 * In recovery mode, if have recovery partition, we still boot the 1142 * kernel from "recovery". If not, don't skip the initramfs so it 1143 * boots to recovery from image in partition "boot". 1144 */ 1145 #ifdef CONFIG_ANDROID_AB 1146 boot_partname = ab_can_find_recovery_part() ? 1147 ANDROID_PARTITION_RECOVERY : ANDROID_PARTITION_BOOT; 1148 #else 1149 boot_partname = ANDROID_PARTITION_RECOVERY; 1150 #endif 1151 break; 1152 case ANDROID_BOOT_MODE_BOOTLOADER: 1153 /* Bootloader mode enters fastboot. If this operation fails we 1154 * simply return since we can't recover from this situation by 1155 * switching to another slot. 1156 */ 1157 return android_bootloader_boot_bootloader(); 1158 } 1159 1160 #ifdef CONFIG_ANDROID_AVB 1161 uint8_t vboot_flag = 0; 1162 disk_partition_t vbmeta_part_info; 1163 1164 #ifdef CONFIG_OPTEE_CLIENT 1165 if (trusty_read_vbootkey_enable_flag(&vboot_flag)) { 1166 printf("Can't read vboot flag\n"); 1167 return -1; 1168 } 1169 #endif 1170 if (vboot_flag) { 1171 printf("Vboot=1, SecureBoot enabled, AVB verify\n"); 1172 if (android_slot_verify(boot_partname, &load_address, 1173 slot_suffix)) { 1174 printf("AVB verify failed\n"); 1175 1176 return -1; 1177 } 1178 } else { 1179 part_num = part_get_info_by_name(dev_desc, 1180 ANDROID_PARTITION_VBMETA, 1181 &vbmeta_part_info); 1182 if (part_num < 0) { 1183 printf("Not AVB images, AVB skip\n"); 1184 env_update("bootargs", 1185 "androidboot.verifiedbootstate=orange"); 1186 if (android_image_load_by_partname(dev_desc, 1187 boot_partname, 1188 &load_address)) { 1189 printf("Android image load failed\n"); 1190 return -1; 1191 } 1192 } else { 1193 printf("Vboot=0, AVB images, AVB verify\n"); 1194 if (android_slot_verify(boot_partname, &load_address, 1195 slot_suffix)) { 1196 printf("AVB verify failed\n"); 1197 1198 return -1; 1199 } 1200 } 1201 } 1202 #else 1203 /* 1204 * 2. Load the boot/recovery from the desired "boot" partition. 1205 * Determine if this is an AOSP image. 1206 */ 1207 if (android_image_load_by_partname(dev_desc, 1208 boot_partname, 1209 &load_address)) { 1210 printf("Android image load failed\n"); 1211 return -1; 1212 } 1213 #endif 1214 1215 /* Set Android root variables. */ 1216 env_set_ulong("android_root_devnum", dev_desc->devnum); 1217 env_set("android_slotsufix", slot_suffix); 1218 1219 #ifdef CONFIG_FASTBOOT_OEM_UNLOCK 1220 /* read oem unlock status and attach to bootargs */ 1221 uint8_t unlock = 0; 1222 TEEC_Result result; 1223 char oem_unlock[OEM_UNLOCK_ARG_SIZE] = {0}; 1224 result = trusty_read_oem_unlock(&unlock); 1225 if (result) { 1226 printf("read oem unlock status with error : 0x%x\n", result); 1227 } else { 1228 snprintf(oem_unlock, OEM_UNLOCK_ARG_SIZE, "androidboot.oem_unlocked=%d", unlock); 1229 env_update("bootargs", oem_unlock); 1230 } 1231 #endif 1232 1233 /* Assemble the command line */ 1234 command_line = android_assemble_cmdline(slot_suffix, mode_cmdline); 1235 env_update("bootargs", command_line); 1236 1237 debug("ANDROID: bootargs: \"%s\"\n", command_line); 1238 1239 #ifdef CONFIG_SUPPORT_OEM_DTB 1240 if (android_bootloader_get_fdt(ANDROID_PARTITION_OEM, 1241 ANDROID_ARG_FDT_FILENAME)) { 1242 printf("Can not get the fdt data from oem!\n"); 1243 } 1244 #endif 1245 #ifdef CONFIG_OPTEE_CLIENT 1246 if (trusty_notify_optee_uboot_end()) 1247 printf("Close optee client failed!\n"); 1248 #endif 1249 1250 #ifdef CONFIG_AMP 1251 return android_bootloader_boot_kernel(load_address); 1252 #else 1253 android_bootloader_boot_kernel(load_address); 1254 1255 /* TODO: If the kernel doesn't boot mark the selected slot as bad. */ 1256 return -1; 1257 #endif 1258 } 1259 1260 int android_avb_boot_flow(unsigned long kernel_address) 1261 { 1262 struct blk_desc *dev_desc; 1263 disk_partition_t boot_part_info; 1264 int ret; 1265 1266 dev_desc = rockchip_get_bootdev(); 1267 if (!dev_desc) { 1268 printf("%s: dev_desc is NULL!\n", __func__); 1269 return -1; 1270 } 1271 1272 /* Load the kernel from the desired "boot" partition. */ 1273 ret = part_get_info_by_name(dev_desc, ANDROID_PARTITION_BOOT, 1274 &boot_part_info); 1275 if (ret < 0) { 1276 printf("%s: failed to get boot part\n", __func__); 1277 return ret; 1278 } 1279 1280 ret = android_image_load(dev_desc, &boot_part_info, 1281 kernel_address, -1UL); 1282 if (ret < 0) { 1283 printf("Android avb boot failed, error %d.\n", ret); 1284 return ret; 1285 } 1286 1287 android_bootloader_boot_kernel(kernel_address); 1288 1289 /* TODO: If the kernel doesn't boot mark the selected slot as bad. */ 1290 return -1; 1291 } 1292 1293 int android_boot_flow(unsigned long kernel_address) 1294 { 1295 struct blk_desc *dev_desc; 1296 disk_partition_t boot_part_info; 1297 int ret; 1298 1299 dev_desc = rockchip_get_bootdev(); 1300 if (!dev_desc) { 1301 printf("%s: dev_desc is NULL!\n", __func__); 1302 return -1; 1303 } 1304 /* Load the kernel from the desired "boot" partition. */ 1305 ret = part_get_info_by_name(dev_desc, ANDROID_PARTITION_BOOT, 1306 &boot_part_info); 1307 if (ret < 0) { 1308 printf("%s: failed to get boot part\n", __func__); 1309 return ret; 1310 } 1311 1312 ret = android_image_load(dev_desc, &boot_part_info, kernel_address, 1313 -1UL); 1314 if (ret < 0) 1315 return ret; 1316 1317 android_bootloader_boot_kernel(kernel_address); 1318 1319 /* TODO: If the kernel doesn't boot mark the selected slot as bad. */ 1320 return -1; 1321 } 1322