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 <bootm.h> 14 #include <asm/arch/hotkey.h> 15 #include <cli.h> 16 #include <common.h> 17 #include <dt_table.h> 18 #include <image-android-dt.h> 19 #include <malloc.h> 20 #include <fdt_support.h> 21 #include <fs.h> 22 #include <boot_rkimg.h> 23 #include <attestation_key.h> 24 #include <keymaster.h> 25 #include <linux/libfdt_env.h> 26 #include <optee_include/OpteeClientInterface.h> 27 #include <bidram.h> 28 #include <console.h> 29 #include <sysmem.h> 30 31 DECLARE_GLOBAL_DATA_PTR; 32 33 #ifdef CONFIG_ANDROID_AB 34 static int is_support_dynamic_partition(struct blk_desc *dev_desc) 35 { 36 disk_partition_t super_part_info; 37 disk_partition_t boot_part_info; 38 int part_num; 39 int is_dp = 0; 40 char *super_dp = NULL; 41 char *super_info = "androidboot.super_partition="; 42 43 memset(&super_part_info, 0x0, sizeof(super_part_info)); 44 part_num = part_get_info_by_name(dev_desc, ANDROID_PARTITION_SUPER, 45 &super_part_info); 46 if (part_num < 0) { 47 memset(&boot_part_info, 0x0, sizeof(boot_part_info)); 48 part_num = part_get_info_by_name(dev_desc, ANDROID_PARTITION_BOOT, 49 &boot_part_info); 50 if (part_num < 0) { 51 is_dp = 0; 52 } else { 53 andr_img_hdr hdr; 54 ulong hdr_blocks = sizeof(struct andr_img_hdr) / 55 boot_part_info.blksz; 56 57 memset(&hdr, 0x0, sizeof(hdr)); 58 if (blk_dread(dev_desc, boot_part_info.start, hdr_blocks, &hdr) != 59 hdr_blocks) { 60 is_dp = 0; 61 } else { 62 debug("hdr cmdline=%s\n", hdr.cmdline); 63 super_dp = strstr(hdr.cmdline, super_info); 64 if (super_dp != NULL) { 65 is_dp = 1; 66 } else { 67 is_dp = 0; 68 } 69 } 70 } 71 } else { 72 debug("Find super partition, the firmware support dynamic partition\n"); 73 is_dp = 1; 74 } 75 76 debug("%s is_dp=%d\n", __func__, is_dp); 77 return is_dp; 78 } 79 80 static int get_partition_unique_uuid(char *partition, 81 char *guid_buf, 82 size_t guid_buf_size) 83 { 84 struct blk_desc *dev_desc; 85 disk_partition_t part_info; 86 87 dev_desc = rockchip_get_bootdev(); 88 if (!dev_desc) { 89 printf("%s: Could not find device\n", __func__); 90 return -1; 91 } 92 93 if (part_get_info_by_name(dev_desc, partition, &part_info) < 0) { 94 printf("Could not find \"%s\" partition\n", partition); 95 return -1; 96 } 97 98 if (guid_buf && guid_buf_size > 0) 99 memcpy(guid_buf, part_info.uuid, guid_buf_size); 100 101 return 0; 102 } 103 104 static void update_root_uuid_if_android_ab(void) 105 { 106 /* 107 * In android a/b & avb process, the system.img is mandory and the 108 * "root=" will be added in vbmeta.img. 109 * 110 * In linux a/b & avb process, the system is NOT mandory and the 111 * "root=" will not be added in vbmeta.img but in kernel dts bootargs. 112 * (Parsed and droped late, i.e. "root=" is not available now/always). 113 * 114 * To compatible with the above two processes, test the existence of 115 * "root=" and create it for linux ab & avb. 116 */ 117 char root_partuuid[70] = "root=PARTUUID="; 118 char *boot_args = env_get("bootargs"); 119 char guid_buf[UUID_SIZE] = {0}; 120 struct blk_desc *dev_desc; 121 122 dev_desc = rockchip_get_bootdev(); 123 if (!dev_desc) { 124 printf("%s: Could not find device\n", __func__); 125 return; 126 } 127 128 if (is_support_dynamic_partition(dev_desc)) { 129 return; 130 } 131 132 if (!strstr(boot_args, "root=")) { 133 get_partition_unique_uuid(ANDROID_PARTITION_SYSTEM, 134 guid_buf, UUID_SIZE); 135 strcat(root_partuuid, guid_buf); 136 env_update("bootargs", root_partuuid); 137 } 138 } 139 140 static int get_slot_suffix_if_android_ab(char *slot_suffix) 141 { 142 /* TODO: get from pre-loader or misc partition */ 143 if (rk_avb_get_current_slot(slot_suffix)) { 144 printf("rk_avb_get_current_slot() failed\n"); 145 return -1; 146 } 147 148 if (slot_suffix[0] != '_') { 149 #ifndef CONFIG_ANDROID_AVB 150 printf("###There is no bootable slot, bring up lastboot!###\n"); 151 if (rk_get_lastboot() == 1) 152 memcpy(slot_suffix, "_b", 2); 153 else if (rk_get_lastboot() == 0) 154 memcpy(slot_suffix, "_a", 2); 155 else 156 #endif 157 return -1; 158 } 159 160 return 0; 161 } 162 163 static int decrease_tries_if_android_ab(void) 164 { 165 AvbABData ab_data_orig; 166 AvbABData ab_data; 167 char slot_suffix[3] = {0}; 168 AvbOps *ops; 169 size_t slot_index = 0; 170 171 if (get_slot_suffix_if_android_ab(slot_suffix)) 172 return -1; 173 174 if (!strncmp(slot_suffix, "_a", 2)) 175 slot_index = 0; 176 else if (!strncmp(slot_suffix, "_b", 2)) 177 slot_index = 1; 178 else 179 slot_index = 0; 180 181 ops = avb_ops_user_new(); 182 if (!ops) { 183 printf("avb_ops_user_new() failed!\n"); 184 return -1; 185 } 186 187 if (load_metadata(ops->ab_ops, &ab_data, &ab_data_orig)) { 188 printf("Can not load metadata\n"); 189 return -1; 190 } 191 192 /* ... and decrement tries remaining, if applicable. */ 193 if (!ab_data.slots[slot_index].successful_boot && 194 ab_data.slots[slot_index].tries_remaining > 0) 195 ab_data.slots[slot_index].tries_remaining -= 1; 196 197 if (save_metadata_if_changed(ops->ab_ops, &ab_data, &ab_data_orig)) { 198 printf("Can not save metadata\n"); 199 return -1; 200 } 201 202 return 0; 203 } 204 #else 205 static inline void update_root_uuid_if_android_ab(void) {} 206 static int get_slot_suffix_if_android_ab(char *slot_suffix) { return 0; } 207 static inline int decrease_tries_if_android_ab(void) { return 0; } 208 #endif 209 210 #if defined(CONFIG_ANDROID_AB) && defined(CONFIG_ANDROID_AVB) 211 static void reset_cpu_if_android_ab(void) 212 { 213 printf("Reset in AB system.\n"); 214 flushc(); 215 /* 216 * Since we use the retry-count in ab system, then can 217 * try reboot if verify fail until the retry-count is 218 * equal to zero. 219 */ 220 reset_cpu(0); 221 } 222 #else 223 static inline void reset_cpu_if_android_ab(void) {} 224 #endif 225 226 int android_bootloader_message_load( 227 struct blk_desc *dev_desc, 228 const disk_partition_t *part_info, 229 struct android_bootloader_message *message) 230 { 231 ulong message_blocks = sizeof(struct android_bootloader_message) / 232 part_info->blksz; 233 if (message_blocks > part_info->size) { 234 printf("misc partition too small.\n"); 235 return -1; 236 } 237 238 if (blk_dread(dev_desc, part_info->start + android_bcb_msg_sector_offset(), 239 message_blocks, message) != 240 message_blocks) { 241 printf("Could not read from misc partition\n"); 242 return -1; 243 } 244 debug("ANDROID: Loaded BCB, %lu blocks.\n", message_blocks); 245 return 0; 246 } 247 248 static int android_bootloader_message_write( 249 struct blk_desc *dev_desc, 250 const disk_partition_t *part_info, 251 struct android_bootloader_message *message) 252 { 253 ulong message_blocks = sizeof(struct android_bootloader_message) / 254 part_info->blksz + android_bcb_msg_sector_offset(); 255 256 if (message_blocks > part_info->size) { 257 printf("misc partition too small.\n"); 258 return -1; 259 } 260 261 if (blk_dwrite(dev_desc, part_info->start, message_blocks, message) != 262 message_blocks) { 263 printf("Could not write to misc partition\n"); 264 return -1; 265 } 266 debug("ANDROID: Wrote new BCB, %lu blocks.\n", message_blocks); 267 return 0; 268 } 269 270 static enum android_boot_mode android_bootloader_load_and_clear_mode( 271 struct blk_desc *dev_desc, 272 const disk_partition_t *misc_part_info) 273 { 274 struct android_bootloader_message bcb; 275 276 #ifdef CONFIG_FASTBOOT 277 char *bootloader_str; 278 279 /* Check for message from bootloader stored in RAM from a previous boot. 280 */ 281 bootloader_str = (char *)CONFIG_FASTBOOT_BUF_ADDR; 282 if (!strcmp("reboot-bootloader", bootloader_str)) { 283 bootloader_str[0] = '\0'; 284 return ANDROID_BOOT_MODE_BOOTLOADER; 285 } 286 #endif 287 288 /* Check and update the BCB message if needed. */ 289 if (android_bootloader_message_load(dev_desc, misc_part_info, &bcb) < 290 0) { 291 printf("WARNING: Unable to load the BCB.\n"); 292 return ANDROID_BOOT_MODE_NORMAL; 293 } 294 295 if (!strcmp("bootonce-bootloader", bcb.command)) { 296 /* Erase the message in the BCB since this value should be used 297 * only once. 298 */ 299 memset(bcb.command, 0, sizeof(bcb.command)); 300 android_bootloader_message_write(dev_desc, misc_part_info, 301 &bcb); 302 return ANDROID_BOOT_MODE_BOOTLOADER; 303 } 304 305 if (!strcmp("boot-recovery", bcb.command)) 306 return ANDROID_BOOT_MODE_RECOVERY; 307 308 if (!strcmp("boot-fastboot", bcb.command)) 309 return ANDROID_BOOT_MODE_RECOVERY; 310 311 return ANDROID_BOOT_MODE_NORMAL; 312 } 313 314 int android_bcb_write(char *cmd) 315 { 316 struct android_bootloader_message message = {0}; 317 disk_partition_t part_info; 318 struct blk_desc *dev_desc; 319 int ret; 320 321 if (!cmd) 322 return -ENOMEM; 323 324 if (strlen(cmd) >= 32) 325 return -ENOMEM; 326 327 dev_desc = rockchip_get_bootdev(); 328 if (!dev_desc) { 329 printf("%s: dev_desc is NULL!\n", __func__); 330 return -ENODEV; 331 } 332 333 ret = part_get_info_by_name(dev_desc, ANDROID_PARTITION_MISC, &part_info); 334 if (ret < 0) { 335 printf("%s: Could not found misc partition, just run recovery\n", 336 __func__); 337 return -ENODEV; 338 } 339 340 strcpy(message.command, cmd); 341 return android_bootloader_message_write(dev_desc, &part_info, &message); 342 } 343 344 /** 345 * Return the reboot reason string for the passed boot mode. 346 * 347 * @param mode The Android Boot mode. 348 * @return a pointer to the reboot reason string for mode. 349 */ 350 static const char *android_boot_mode_str(enum android_boot_mode mode) 351 { 352 switch (mode) { 353 case ANDROID_BOOT_MODE_NORMAL: 354 return "(none)"; 355 case ANDROID_BOOT_MODE_RECOVERY: 356 return "recovery"; 357 case ANDROID_BOOT_MODE_BOOTLOADER: 358 return "bootloader"; 359 } 360 return NULL; 361 } 362 363 static int android_bootloader_boot_bootloader(void) 364 { 365 const char *fastboot_cmd = env_get("fastbootcmd"); 366 367 if (fastboot_cmd == NULL) { 368 printf("fastboot_cmd is null, run default fastboot_cmd!\n"); 369 fastboot_cmd = "fastboot usb 0"; 370 } 371 372 return run_command(fastboot_cmd, CMD_FLAG_ENV); 373 } 374 375 #ifdef CONFIG_SUPPORT_OEM_DTB 376 static int android_bootloader_get_fdt(const char *part_name, 377 const char *load_file_name) 378 { 379 struct blk_desc *dev_desc; 380 disk_partition_t part_info; 381 char *fdt_addr = NULL; 382 char dev_part[3] = {0}; 383 loff_t bytes = 0; 384 loff_t pos = 0; 385 loff_t len_read; 386 unsigned long addr = 0; 387 int part_num = -1; 388 int ret; 389 390 dev_desc = rockchip_get_bootdev(); 391 if (!dev_desc) { 392 printf("%s: dev_desc is NULL!\n", __func__); 393 return -1; 394 } 395 396 part_num = part_get_info_by_name(dev_desc, part_name, &part_info); 397 if (part_num < 0) { 398 printf("ANDROID: Could not find partition \"%s\"\n", part_name); 399 return -1; 400 } 401 402 snprintf(dev_part, ARRAY_SIZE(dev_part), ":%x", part_num); 403 if (fs_set_blk_dev_with_part(dev_desc, part_num)) 404 return -1; 405 406 fdt_addr = env_get("fdt_addr_r"); 407 if (!fdt_addr) { 408 printf("ANDROID: No Found FDT Load Address.\n"); 409 return -1; 410 } 411 addr = simple_strtoul(fdt_addr, NULL, 16); 412 413 ret = fs_read(load_file_name, addr, pos, bytes, &len_read); 414 if (ret < 0) 415 return -1; 416 417 return 0; 418 } 419 #endif 420 421 /* 422 * Test on RK3308 AARCH64 mode (Cortex A35 816 MHZ) boot with eMMC: 423 * 424 * |-------------------------------------------------------------------| 425 * | Format | Size(Byte) | Ratio | Decomp time(ms) | Boot time(ms) | 426 * |-------------------------------------------------------------------| 427 * | Image | 7720968 | | | 488 | 428 * |-------------------------------------------------------------------| 429 * | Image.lz4 | 4119448 | 53% | 59 | 455 | 430 * |-------------------------------------------------------------------| 431 * | Image.lzo | 3858322 | 49% | 141 | 536 | 432 * |-------------------------------------------------------------------| 433 * | Image.gz | 3529108 | 45% | 222 | 609 | 434 * |-------------------------------------------------------------------| 435 * | Image.bz2 | 3295914 | 42% | 2940 | | 436 * |-------------------------------------------------------------------| 437 * | Image.lzma| 2683750 | 34% | | | 438 * |-------------------------------------------------------------------| 439 */ 440 static int sysmem_alloc_uncomp_kernel(ulong andr_hdr, 441 ulong uncomp_kaddr, u32 comp) 442 { 443 struct andr_img_hdr *hdr = (struct andr_img_hdr *)andr_hdr; 444 ulong ksize, kaddr; 445 446 if (comp != IH_COMP_NONE) { 447 /* Release compressed sysmem */ 448 kaddr = env_get_hex("kernel_addr_c", 0); 449 if (!kaddr) 450 kaddr = env_get_hex("kernel_addr_r", 0); 451 kaddr -= hdr->page_size; 452 if (sysmem_free((phys_addr_t)kaddr)) 453 return -EINVAL; 454 455 /* 456 * Use smaller Ratio to get larger estimated uncompress 457 * kernel size. 458 */ 459 if (comp == IH_COMP_ZIMAGE) 460 ksize = hdr->kernel_size * 100 / 45; 461 else if (comp == IH_COMP_LZ4) 462 ksize = hdr->kernel_size * 100 / 50; 463 else if (comp == IH_COMP_LZO) 464 ksize = hdr->kernel_size * 100 / 45; 465 else if (comp == IH_COMP_GZIP) 466 ksize = hdr->kernel_size * 100 / 40; 467 else if (comp == IH_COMP_BZIP2) 468 ksize = hdr->kernel_size * 100 / 40; 469 else if (comp == IH_COMP_LZMA) 470 ksize = hdr->kernel_size * 100 / 30; 471 else 472 ksize = hdr->kernel_size; 473 474 kaddr = uncomp_kaddr; 475 ksize = ALIGN(ksize, 512); 476 if (!sysmem_alloc_base(MEM_UNCOMP_KERNEL, 477 (phys_addr_t)kaddr, ksize)) 478 return -ENOMEM; 479 } 480 481 return 0; 482 } 483 484 int android_bootloader_boot_kernel(unsigned long kernel_address) 485 { 486 char *kernel_addr_r = env_get("kernel_addr_r"); 487 char *kernel_addr_c = env_get("kernel_addr_c"); 488 char *fdt_addr = env_get("fdt_addr_r"); 489 char kernel_addr_str[12]; 490 char comp_str[32] = {0}; 491 ulong comp_type; 492 const char *comp_name[] = { 493 [IH_COMP_NONE] = "IMAGE", 494 [IH_COMP_GZIP] = "GZIP", 495 [IH_COMP_BZIP2] = "BZIP2", 496 [IH_COMP_LZMA] = "LZMA", 497 [IH_COMP_LZO] = "LZO", 498 [IH_COMP_LZ4] = "LZ4", 499 [IH_COMP_ZIMAGE]= "ZIMAGE", 500 }; 501 char *bootm_args[] = { 502 kernel_addr_str, kernel_addr_str, fdt_addr, NULL }; 503 504 comp_type = env_get_ulong("os_comp", 10, 0); 505 sprintf(kernel_addr_str, "0x%08lx", kernel_address); 506 507 if (comp_type != IH_COMP_NONE) { 508 if (comp_type == IH_COMP_ZIMAGE && 509 kernel_addr_r && !kernel_addr_c) { 510 kernel_addr_c = kernel_addr_r; 511 kernel_addr_r = __stringify(CONFIG_SYS_SDRAM_BASE); 512 } 513 snprintf(comp_str, 32, "%s%s%s", 514 "(Uncompress to ", kernel_addr_r, ")"); 515 } 516 517 printf("Booting %s kernel at %s%s with fdt at %s...\n\n\n", 518 comp_name[comp_type], 519 comp_type != IH_COMP_NONE ? kernel_addr_c : kernel_addr_r, 520 comp_str, fdt_addr); 521 522 hotkey_run(HK_SYSMEM); 523 524 /* 525 * Check whether there is enough space for uncompress kernel, 526 * Actually, here only gives a sysmem warning message when failed 527 * but never return -1. 528 */ 529 if (sysmem_alloc_uncomp_kernel(kernel_address, 530 simple_strtoul(kernel_addr_r, NULL, 16), 531 comp_type)) 532 return -1; 533 534 return do_bootm_states(NULL, 0, ARRAY_SIZE(bootm_args), bootm_args, 535 BOOTM_STATE_START | 536 BOOTM_STATE_FINDOS | BOOTM_STATE_FINDOTHER | 537 BOOTM_STATE_LOADOS | 538 #ifdef CONFIG_SYS_BOOT_RAMDISK_HIGH 539 BOOTM_STATE_RAMDISK | 540 #endif 541 BOOTM_STATE_OS_PREP | BOOTM_STATE_OS_FAKE_GO | 542 BOOTM_STATE_OS_GO, &images, 1); 543 } 544 545 static char *strjoin(const char **chunks, char separator) 546 { 547 int len, joined_len = 0; 548 char *ret, *current; 549 const char **p; 550 551 for (p = chunks; *p; p++) 552 joined_len += strlen(*p) + 1; 553 554 if (!joined_len) { 555 ret = malloc(1); 556 if (ret) 557 ret[0] = '\0'; 558 return ret; 559 } 560 561 ret = malloc(joined_len); 562 current = ret; 563 if (!ret) 564 return ret; 565 566 for (p = chunks; *p; p++) { 567 len = strlen(*p); 568 memcpy(current, *p, len); 569 current += len; 570 *current = separator; 571 current++; 572 } 573 /* Replace the last separator by a \0. */ 574 current[-1] = '\0'; 575 return ret; 576 } 577 578 /** android_assemble_cmdline - Assemble the command line to pass to the kernel 579 * @return a newly allocated string 580 */ 581 char *android_assemble_cmdline(const char *slot_suffix, 582 const char *extra_args) 583 { 584 const char *cmdline_chunks[16]; 585 const char **current_chunk = cmdline_chunks; 586 char *env_cmdline, *cmdline, *rootdev_input, *serialno; 587 char *allocated_suffix = NULL; 588 char *allocated_serialno = NULL; 589 char *allocated_rootdev = NULL; 590 unsigned long rootdev_len; 591 592 env_cmdline = env_get("bootargs"); 593 if (env_cmdline) 594 *(current_chunk++) = env_cmdline; 595 596 /* The |slot_suffix| needs to be passed to the kernel to know what 597 * slot to boot from. 598 */ 599 if (slot_suffix) { 600 allocated_suffix = malloc(strlen(ANDROID_ARG_SLOT_SUFFIX) + 601 strlen(slot_suffix) + 1); 602 memset(allocated_suffix, 0, strlen(ANDROID_ARG_SLOT_SUFFIX) 603 + strlen(slot_suffix) + 1); 604 strcpy(allocated_suffix, ANDROID_ARG_SLOT_SUFFIX); 605 strcat(allocated_suffix, slot_suffix); 606 *(current_chunk++) = allocated_suffix; 607 } 608 609 serialno = env_get("serial#"); 610 if (serialno) { 611 allocated_serialno = malloc(strlen(ANDROID_ARG_SERIALNO) + 612 strlen(serialno) + 1); 613 memset(allocated_serialno, 0, strlen(ANDROID_ARG_SERIALNO) + 614 strlen(serialno) + 1); 615 strcpy(allocated_serialno, ANDROID_ARG_SERIALNO); 616 strcat(allocated_serialno, serialno); 617 *(current_chunk++) = allocated_serialno; 618 } 619 620 rootdev_input = env_get("android_rootdev"); 621 if (rootdev_input) { 622 rootdev_len = strlen(ANDROID_ARG_ROOT) + CONFIG_SYS_CBSIZE + 1; 623 allocated_rootdev = malloc(rootdev_len); 624 strcpy(allocated_rootdev, ANDROID_ARG_ROOT); 625 cli_simple_process_macros(rootdev_input, 626 allocated_rootdev + 627 strlen(ANDROID_ARG_ROOT)); 628 /* Make sure that the string is null-terminated since the 629 * previous could not copy to the end of the input string if it 630 * is too big. 631 */ 632 allocated_rootdev[rootdev_len - 1] = '\0'; 633 *(current_chunk++) = allocated_rootdev; 634 } 635 636 if (extra_args) 637 *(current_chunk++) = extra_args; 638 639 *(current_chunk++) = NULL; 640 cmdline = strjoin(cmdline_chunks, ' '); 641 free(allocated_suffix); 642 free(allocated_rootdev); 643 return cmdline; 644 } 645 646 #ifdef CONFIG_ANDROID_AVB 647 static void slot_set_unbootable(AvbABSlotData* slot) 648 { 649 slot->priority = 0; 650 slot->tries_remaining = 0; 651 slot->successful_boot = 0; 652 } 653 654 static AvbSlotVerifyResult android_slot_verify(char *boot_partname, 655 unsigned long *android_load_address, 656 char *slot_suffix) 657 { 658 const char *requested_partitions[1] = {NULL}; 659 uint8_t unlocked = true; 660 AvbOps *ops; 661 AvbSlotVerifyFlags flags; 662 AvbSlotVerifyData *slot_data[1] = {NULL}; 663 AvbSlotVerifyResult verify_result; 664 AvbABData ab_data, ab_data_orig; 665 size_t slot_index_to_boot = 0; 666 char verify_state[38] = {0}; 667 char can_boot = 1; 668 unsigned long load_address = *android_load_address; 669 struct andr_img_hdr *hdr; 670 671 requested_partitions[0] = boot_partname; 672 ops = avb_ops_user_new(); 673 if (ops == NULL) { 674 printf("avb_ops_user_new() failed!\n"); 675 return AVB_SLOT_VERIFY_RESULT_ERROR_OOM; 676 } 677 678 if (ops->read_is_device_unlocked(ops, (bool *)&unlocked) != AVB_IO_RESULT_OK) 679 printf("Error determining whether device is unlocked.\n"); 680 681 printf("read_is_device_unlocked() ops returned that device is %s\n", 682 (unlocked & LOCK_MASK)? "UNLOCKED" : "LOCKED"); 683 684 flags = AVB_SLOT_VERIFY_FLAGS_NONE; 685 if (unlocked & LOCK_MASK) 686 flags |= AVB_SLOT_VERIFY_FLAGS_ALLOW_VERIFICATION_ERROR; 687 688 if(load_metadata(ops->ab_ops, &ab_data, &ab_data_orig)) { 689 printf("Can not load metadata\n"); 690 return AVB_SLOT_VERIFY_RESULT_ERROR_IO; 691 } 692 693 if (!strncmp(slot_suffix, "_a", 2)) 694 slot_index_to_boot = 0; 695 else if (!strncmp(slot_suffix, "_b", 2)) 696 slot_index_to_boot = 1; 697 else 698 slot_index_to_boot = 0; 699 700 verify_result = 701 avb_slot_verify(ops, 702 requested_partitions, 703 slot_suffix, 704 flags, 705 AVB_HASHTREE_ERROR_MODE_RESTART, 706 &slot_data[0]); 707 708 strcat(verify_state, ANDROID_VERIFY_STATE); 709 switch (verify_result) { 710 case AVB_SLOT_VERIFY_RESULT_OK: 711 if (unlocked & LOCK_MASK) 712 strcat(verify_state, "orange"); 713 else 714 strcat(verify_state, "green"); 715 break; 716 case AVB_SLOT_VERIFY_RESULT_ERROR_PUBLIC_KEY_REJECTED: 717 if (unlocked & LOCK_MASK) 718 strcat(verify_state, "orange"); 719 else 720 strcat(verify_state, "yellow"); 721 break; 722 case AVB_SLOT_VERIFY_RESULT_ERROR_OOM: 723 case AVB_SLOT_VERIFY_RESULT_ERROR_IO: 724 case AVB_SLOT_VERIFY_RESULT_ERROR_INVALID_METADATA: 725 case AVB_SLOT_VERIFY_RESULT_ERROR_UNSUPPORTED_VERSION: 726 case AVB_SLOT_VERIFY_RESULT_ERROR_VERIFICATION: 727 case AVB_SLOT_VERIFY_RESULT_ERROR_ROLLBACK_INDEX: 728 default: 729 if (unlocked & LOCK_MASK) 730 strcat(verify_state, "orange"); 731 else 732 strcat(verify_state, "red"); 733 break; 734 } 735 736 if (!slot_data[0]) { 737 can_boot = 0; 738 goto out; 739 } 740 741 if (verify_result == AVB_SLOT_VERIFY_RESULT_OK || 742 verify_result == AVB_SLOT_VERIFY_RESULT_ERROR_PUBLIC_KEY_REJECTED || 743 (unlocked & LOCK_MASK)) { 744 int len = 0; 745 char *bootargs, *newbootargs; 746 747 if (*slot_data[0]->cmdline) { 748 debug("Kernel command line: %s\n", slot_data[0]->cmdline); 749 len += strlen(slot_data[0]->cmdline); 750 } 751 752 bootargs = env_get("bootargs"); 753 if (bootargs) 754 len += strlen(bootargs); 755 756 newbootargs = malloc(len + 2); 757 758 if (!newbootargs) { 759 puts("Error: malloc in android_slot_verify failed!\n"); 760 return AVB_SLOT_VERIFY_RESULT_ERROR_OOM; 761 } 762 *newbootargs = '\0'; 763 764 if (bootargs) { 765 strcpy(newbootargs, bootargs); 766 strcat(newbootargs, " "); 767 } 768 if (*slot_data[0]->cmdline) 769 strcat(newbootargs, slot_data[0]->cmdline); 770 env_set("bootargs", newbootargs); 771 772 hdr = (void *)slot_data[0]->loaded_partitions->data; 773 774 /* 775 * populate boot_img_hdr_v3 776 * 777 * If allow verification error: the image is loaded by 778 * ops->get_preloaded_partition() which auto populates 779 * boot_img_hdr_v3. 780 * 781 * If not allow verification error: the image is full loaded 782 * by ops->read_from_partition() which doesn't populate 783 * boot_img_hdr_v3, we need to fix it here. 784 */ 785 if (hdr->header_version >= 3 && 786 !(flags & AVB_SLOT_VERIFY_FLAGS_ALLOW_VERIFICATION_ERROR)) { 787 struct andr_img_hdr *v3hdr; 788 struct blk_desc *dev_desc; 789 disk_partition_t part; 790 791 dev_desc = rockchip_get_bootdev(); 792 if (!dev_desc) 793 return -1; 794 795 if (part_get_info_by_name(dev_desc, 796 boot_partname, &part) < 0) 797 return -1; 798 799 v3hdr = populate_andr_img_hdr(dev_desc, &part); 800 if (v3hdr) { 801 memcpy(hdr, v3hdr, sizeof(*v3hdr)); 802 free(v3hdr); 803 } 804 } 805 806 /* Reserve page_size */ 807 load_address -= hdr->page_size; 808 if (android_image_memcpy_separate(hdr, &load_address)) { 809 printf("Failed to separate copy android image\n"); 810 return AVB_SLOT_VERIFY_RESULT_ERROR_IO; 811 } 812 *android_load_address = load_address; 813 } else { 814 slot_set_unbootable(&ab_data.slots[slot_index_to_boot]); 815 } 816 817 out: 818 env_update("bootargs", verify_state); 819 if (save_metadata_if_changed(ops->ab_ops, &ab_data, &ab_data_orig)) { 820 printf("Can not save metadata\n"); 821 verify_result = AVB_SLOT_VERIFY_RESULT_ERROR_IO; 822 } 823 824 if (slot_data[0] != NULL) 825 avb_slot_verify_data_free(slot_data[0]); 826 827 if ((unlocked & LOCK_MASK) && can_boot) 828 return 0; 829 else 830 return verify_result; 831 } 832 #endif 833 834 #if defined(CONFIG_CMD_DTIMG) && defined(CONFIG_OF_LIBFDT_OVERLAY) 835 836 /* 837 * Default return index 0. 838 */ 839 __weak int board_select_fdt_index(ulong dt_table_hdr) 840 { 841 /* 842 * User can use "dt_for_each_entry(entry, hdr, idx)" to iterate 843 * over all dt entry of DT image and pick up which they want. 844 * 845 * Example: 846 * struct dt_table_entry *entry; 847 * int index; 848 * 849 * dt_for_each_entry(entry, dt_table_hdr, index) { 850 * 851 * .... (use entry) 852 * } 853 * 854 * return index; 855 */ 856 return 0; 857 } 858 859 static int android_get_dtbo(ulong *fdt_dtbo, 860 const struct andr_img_hdr *hdr, 861 int *index, const char *part_dtbo) 862 { 863 struct dt_table_header *dt_hdr = NULL; 864 struct blk_desc *dev_desc; 865 disk_partition_t part_info; 866 u32 blk_offset, blk_cnt; 867 void *buf; 868 ulong e_addr; 869 u32 e_size; 870 int e_idx; 871 int ret; 872 873 /* Get partition info */ 874 dev_desc = rockchip_get_bootdev(); 875 if (!dev_desc) 876 return -ENODEV; 877 878 ret = part_get_info_by_name(dev_desc, part_dtbo, &part_info); 879 if (ret < 0) { 880 printf("No %s partition, ret=%d\n", part_dtbo, ret); 881 return ret; 882 } 883 884 /* Check dt table header */ 885 if (!strcmp(part_dtbo, PART_RECOVERY)) 886 blk_offset = part_info.start + 887 (hdr->recovery_dtbo_offset / part_info.blksz); 888 else 889 blk_offset = part_info.start; 890 891 dt_hdr = memalign(ARCH_DMA_MINALIGN, part_info.blksz); 892 if (!dt_hdr) 893 return -ENOMEM; 894 895 ret = blk_dread(dev_desc, blk_offset, 1, dt_hdr); 896 if (ret != 1) 897 goto out1; 898 899 if (!android_dt_check_header((ulong)dt_hdr)) { 900 printf("DTBO: invalid dt table header: 0x%x\n", dt_hdr->magic); 901 ret = -EINVAL; 902 goto out1; 903 } 904 905 #ifdef DEBUG 906 android_dt_print_contents((ulong)dt_hdr); 907 #endif 908 909 blk_cnt = DIV_ROUND_UP(fdt32_to_cpu(dt_hdr->total_size), 910 part_info.blksz); 911 /* Read all DT Image */ 912 buf = memalign(ARCH_DMA_MINALIGN, part_info.blksz * blk_cnt); 913 if (!buf) { 914 ret = -ENOMEM; 915 goto out1; 916 } 917 918 ret = blk_dread(dev_desc, blk_offset, blk_cnt, buf); 919 if (ret != blk_cnt) 920 goto out2; 921 922 e_idx = board_select_fdt_index((ulong)buf); 923 if (e_idx < 0) { 924 printf("%s: failed to select board fdt index\n", __func__); 925 ret = -EINVAL; 926 goto out2; 927 } 928 929 ret = android_dt_get_fdt_by_index((ulong)buf, e_idx, &e_addr, &e_size); 930 if (!ret) { 931 printf("%s: failed to get fdt, index=%d\n", __func__, e_idx); 932 ret = -EINVAL; 933 goto out2; 934 } 935 936 if (fdt_dtbo) 937 *fdt_dtbo = e_addr; 938 if (index) 939 *index = e_idx; 940 941 free(dt_hdr); 942 debug("ANDROID: Loading dt entry to 0x%lx size 0x%x idx %d from \"%s\" part\n", 943 e_addr, e_size, e_idx, part_dtbo); 944 945 return 0; 946 947 out2: 948 free(buf); 949 out1: 950 free(dt_hdr); 951 952 return ret; 953 } 954 955 int android_fdt_overlay_apply(void *fdt_addr) 956 { 957 struct andr_img_hdr *hdr; 958 struct blk_desc *dev_desc; 959 const char *part_boot; 960 disk_partition_t part_info; 961 char *part_dtbo; 962 char buf[32] = {0}; 963 ulong fdt_dtbo = -1; 964 int index = -1; 965 int ret; 966 967 if (IS_ENABLED(CONFIG_ANDROID_AB) || 968 (rockchip_get_boot_mode() != BOOT_MODE_RECOVERY)) { 969 part_boot = PART_BOOT; 970 part_dtbo = PART_DTBO; 971 } else { 972 part_boot = PART_RECOVERY; 973 part_dtbo = PART_RECOVERY; 974 } 975 976 dev_desc = rockchip_get_bootdev(); 977 if (!dev_desc) 978 return -ENODEV; 979 980 ret = part_get_info_by_name(dev_desc, part_boot, &part_info); 981 if (ret < 0) 982 return ret; 983 984 hdr = populate_andr_img_hdr(dev_desc, &part_info); 985 if (!hdr) 986 return -EINVAL; 987 #ifdef DEBUG 988 android_print_contents(hdr); 989 #endif 990 991 /* 992 * recovery_dtbo fields 993 * 994 * boot_img_hdr_v0: unsupported 995 * boot_img_hdr_v1,2: supported 996 * boot_img_hdr_v3 + boot.img: supported 997 * boot_img_hdr_v3 + recovery.img: unsupported 998 */ 999 if ((hdr->header_version == 0) || 1000 (hdr->header_version == 3 && !strcmp(part_boot, PART_RECOVERY)) || 1001 (hdr->header_version > 3)) 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 /* Must incease size before overlay */ 1008 fdt_size = fdt_totalsize((void *)fdt_addr) + 1009 fdt_totalsize((void *)fdt_dtbo); 1010 if (sysmem_free((phys_addr_t)fdt_addr)) 1011 goto out; 1012 1013 if (!sysmem_alloc_base(MEM_FDT_DTBO, 1014 (phys_addr_t)fdt_addr, 1015 fdt_size + CONFIG_SYS_FDT_PAD)) 1016 goto out; 1017 fdt_increase_size(fdt_addr, fdt_totalsize((void *)fdt_dtbo)); 1018 ret = fdt_overlay_apply(fdt_addr, (void *)fdt_dtbo); 1019 if (!ret) { 1020 snprintf(buf, 32, "%s%d", "androidboot.dtbo_idx=", index); 1021 env_update("bootargs", buf); 1022 printf("ANDROID: fdt overlay OK\n"); 1023 } else { 1024 printf("ANDROID: fdt overlay failed, ret=%d\n", ret); 1025 } 1026 } 1027 1028 out: 1029 free(hdr); 1030 1031 return 0; 1032 } 1033 #endif 1034 1035 int android_image_load_by_partname(struct blk_desc *dev_desc, 1036 const char *boot_partname, 1037 unsigned long *load_address) 1038 { 1039 disk_partition_t boot_part; 1040 int ret, part_num; 1041 1042 part_num = part_get_info_by_name(dev_desc, boot_partname, &boot_part); 1043 if (part_num < 0) { 1044 printf("%s: Can't find part: %s\n", __func__, boot_partname); 1045 return -1; 1046 } 1047 debug("ANDROID: Loading kernel from \"%s\", partition %d.\n", 1048 boot_part.name, part_num); 1049 1050 ret = android_image_load(dev_desc, &boot_part, *load_address, -1UL); 1051 if (ret < 0) { 1052 debug("%s: %s part load fail, ret=%d\n", 1053 __func__, boot_part.name, ret); 1054 return ret; 1055 } 1056 *load_address = ret; 1057 1058 return 0; 1059 } 1060 1061 int android_bootloader_boot_flow(struct blk_desc *dev_desc, 1062 unsigned long load_address) 1063 { 1064 enum android_boot_mode mode = ANDROID_BOOT_MODE_NORMAL; 1065 disk_partition_t misc_part_info; 1066 int part_num; 1067 char *command_line; 1068 char slot_suffix[3] = {0}; 1069 const char *mode_cmdline = NULL; 1070 char *boot_partname = ANDROID_PARTITION_BOOT; 1071 1072 /* 1073 * 1. Load MISC partition and determine the boot mode 1074 * clear its value for the next boot if needed. 1075 */ 1076 part_num = part_get_info_by_name(dev_desc, ANDROID_PARTITION_MISC, 1077 &misc_part_info); 1078 if (part_num < 0) { 1079 printf("Could not find misc partition\n"); 1080 } else { 1081 #ifdef CONFIG_ANDROID_KEYMASTER_CA 1082 /* load attestation key from misc partition. */ 1083 load_attestation_key(dev_desc, &misc_part_info); 1084 #endif 1085 1086 mode = android_bootloader_load_and_clear_mode(dev_desc, 1087 &misc_part_info); 1088 #ifdef CONFIG_RKIMG_BOOTLOADER 1089 if (mode == ANDROID_BOOT_MODE_NORMAL) { 1090 if (rockchip_get_boot_mode() == BOOT_MODE_RECOVERY) 1091 mode = ANDROID_BOOT_MODE_RECOVERY; 1092 } 1093 #endif 1094 } 1095 1096 printf("ANDROID: reboot reason: \"%s\"\n", android_boot_mode_str(mode)); 1097 1098 /* Get current slot_suffix */ 1099 if (get_slot_suffix_if_android_ab(slot_suffix)) 1100 return -1; 1101 1102 switch (mode) { 1103 case ANDROID_BOOT_MODE_NORMAL: 1104 /* In normal mode, we load the kernel from "boot" but append 1105 * "skip_initramfs" to the cmdline to make it ignore the 1106 * recovery initramfs in the boot partition. 1107 */ 1108 #ifdef CONFIG_ANDROID_AB 1109 /* In A/B, the recovery image is built as boot.img, containing the 1110 * recovery's ramdisk. Previously, bootloader used the skip_initramfs 1111 * kernel command line parameter to decide which mode to boot into. 1112 * For Android >=10 and with dynamic partition support, the bootloader 1113 * MUST NOT pass skip_initramfs to the kernel command-line. 1114 * Instead, bootloader should pass androidboot.force_normal_boot=1 1115 * and then Android's first-stage init in ramdisk 1116 * will skip recovery and boot normal Android. 1117 */ 1118 if (is_support_dynamic_partition(dev_desc)) { 1119 mode_cmdline = "androidboot.force_normal_boot=1"; 1120 } else { 1121 mode_cmdline = "skip_initramfs"; 1122 } 1123 #endif 1124 break; 1125 case ANDROID_BOOT_MODE_RECOVERY: 1126 /* In recovery mode we still boot the kernel from "boot" but 1127 * don't skip the initramfs so it boots to recovery. 1128 */ 1129 #ifndef CONFIG_ANDROID_AB 1130 boot_partname = ANDROID_PARTITION_RECOVERY; 1131 #endif 1132 break; 1133 case ANDROID_BOOT_MODE_BOOTLOADER: 1134 /* Bootloader mode enters fastboot. If this operation fails we 1135 * simply return since we can't recover from this situation by 1136 * switching to another slot. 1137 */ 1138 return android_bootloader_boot_bootloader(); 1139 } 1140 1141 #ifdef CONFIG_ANDROID_AVB 1142 uint8_t vboot_flag = 0; 1143 disk_partition_t vbmeta_part_info; 1144 1145 if (trusty_read_vbootkey_enable_flag(&vboot_flag)) { 1146 printf("Can't read vboot flag\n"); 1147 return -1; 1148 } 1149 1150 if (vboot_flag) { 1151 printf("Vboot=1, SecureBoot enabled, AVB verify\n"); 1152 if (android_slot_verify(boot_partname, &load_address, 1153 slot_suffix)) { 1154 printf("AVB verify failed\n"); 1155 reset_cpu_if_android_ab(); 1156 1157 return -1; 1158 } 1159 } else { 1160 part_num = part_get_info_by_name(dev_desc, 1161 ANDROID_PARTITION_VBMETA, 1162 &vbmeta_part_info); 1163 if (part_num < 0) { 1164 printf("Not AVB images, AVB skip\n"); 1165 env_update("bootargs", 1166 "androidboot.verifiedbootstate=orange"); 1167 if (android_image_load_by_partname(dev_desc, 1168 boot_partname, 1169 &load_address)) { 1170 printf("Android image load failed\n"); 1171 return -1; 1172 } 1173 } else { 1174 printf("Vboot=0, AVB images, AVB verify\n"); 1175 if (android_slot_verify(boot_partname, &load_address, 1176 slot_suffix)) { 1177 printf("AVB verify failed\n"); 1178 reset_cpu_if_android_ab(); 1179 1180 return -1; 1181 } 1182 } 1183 } 1184 #else 1185 /* 1186 * 2. Load the boot/recovery from the desired "boot" partition. 1187 * Determine if this is an AOSP image. 1188 */ 1189 if (android_image_load_by_partname(dev_desc, 1190 boot_partname, 1191 &load_address)) { 1192 printf("Android image load failed\n"); 1193 return -1; 1194 } 1195 #endif 1196 update_root_uuid_if_android_ab(); 1197 1198 /* Set Android root variables. */ 1199 env_set_ulong("android_root_devnum", dev_desc->devnum); 1200 env_set("android_slotsufix", slot_suffix); 1201 1202 #ifdef CONFIG_FASTBOOT_OEM_UNLOCK 1203 /* read oem unlock status and attach to bootargs */ 1204 uint8_t unlock = 0; 1205 TEEC_Result result; 1206 char oem_unlock[OEM_UNLOCK_ARG_SIZE] = {0}; 1207 result = trusty_read_oem_unlock(&unlock); 1208 if (result) { 1209 printf("read oem unlock status with error : 0x%x\n", result); 1210 } else { 1211 snprintf(oem_unlock, OEM_UNLOCK_ARG_SIZE, "androidboot.oem_unlocked=%d", unlock); 1212 env_update("bootargs", oem_unlock); 1213 } 1214 #endif 1215 1216 /* Assemble the command line */ 1217 command_line = android_assemble_cmdline(slot_suffix, mode_cmdline); 1218 env_update("bootargs", command_line); 1219 1220 debug("ANDROID: bootargs: \"%s\"\n", command_line); 1221 1222 #ifdef CONFIG_SUPPORT_OEM_DTB 1223 if (android_bootloader_get_fdt(ANDROID_PARTITION_OEM, 1224 ANDROID_ARG_FDT_FILENAME)) { 1225 printf("Can not get the fdt data from oem!\n"); 1226 } 1227 #endif 1228 #ifdef CONFIG_OPTEE_CLIENT 1229 if (trusty_notify_optee_uboot_end()) 1230 printf("Close optee client failed!\n"); 1231 #endif 1232 1233 if (decrease_tries_if_android_ab()) 1234 printf("Decrease ab tries count fail!\n"); 1235 1236 android_bootloader_boot_kernel(load_address); 1237 1238 /* TODO: If the kernel doesn't boot mark the selected slot as bad. */ 1239 return -1; 1240 } 1241 1242 int android_avb_boot_flow(unsigned long kernel_address) 1243 { 1244 struct blk_desc *dev_desc; 1245 disk_partition_t boot_part_info; 1246 int ret; 1247 1248 dev_desc = rockchip_get_bootdev(); 1249 if (!dev_desc) { 1250 printf("%s: dev_desc is NULL!\n", __func__); 1251 return -1; 1252 } 1253 1254 /* Load the kernel from the desired "boot" partition. */ 1255 ret = part_get_info_by_name(dev_desc, ANDROID_PARTITION_BOOT, 1256 &boot_part_info); 1257 if (ret < 0) { 1258 printf("%s: failed to get boot part\n", __func__); 1259 return ret; 1260 } 1261 1262 ret = android_image_load(dev_desc, &boot_part_info, 1263 kernel_address, -1UL); 1264 if (ret < 0) { 1265 printf("Android avb boot failed, error %d.\n", ret); 1266 return ret; 1267 } 1268 1269 android_bootloader_boot_kernel(kernel_address); 1270 1271 /* TODO: If the kernel doesn't boot mark the selected slot as bad. */ 1272 return -1; 1273 } 1274 1275 int android_boot_flow(unsigned long kernel_address) 1276 { 1277 struct blk_desc *dev_desc; 1278 disk_partition_t boot_part_info; 1279 int ret; 1280 1281 dev_desc = rockchip_get_bootdev(); 1282 if (!dev_desc) { 1283 printf("%s: dev_desc is NULL!\n", __func__); 1284 return -1; 1285 } 1286 /* Load the kernel from the desired "boot" partition. */ 1287 ret = part_get_info_by_name(dev_desc, ANDROID_PARTITION_BOOT, 1288 &boot_part_info); 1289 if (ret < 0) { 1290 printf("%s: failed to get boot part\n", __func__); 1291 return ret; 1292 } 1293 1294 ret = android_image_load(dev_desc, &boot_part_info, kernel_address, 1295 -1UL); 1296 if (ret < 0) 1297 return ret; 1298 1299 android_bootloader_boot_kernel(kernel_address); 1300 1301 /* TODO: If the kernel doesn't boot mark the selected slot as bad. */ 1302 return -1; 1303 } 1304